Title of Invention

A BLOCK AND PANEL FOR CONSTRUCTION AND A METHOD OF FORMING A PANEL FOR STRUCTURE

Abstract A block (10) for construction capable of constructing a flat structure by arranging the plurality of blocks in a flat state with four outer peripheral surfaces thereof, that are, an upper surface (10a), a lower surface (10b), a left side surface (10c), and a right side surface (10d) brought into contact with each other. In the block (10) for construction, a plurality of thr tugh holes (11) for inserting bar-like stretching members therein are formed parallel with the front surface (10f) and the rear surface (10e) thereof, and recessed parts (12) are formed in the upper surface (10a) and lower surface (10b) forming outer peripheral surfaces crossing the axial direction of the through holes (11) to dispose the other stretching members in a direction three-dimensionally crossing the stretching members inserted into the through holes (11). By using the block (10) for construction, the flat structures such as the wall parts and floor parts of a building can be easily constracted in a rather short period, and the durabilities of these flat structures can also be increased.
Full Text DESCRIPTION
BLOCK FOR CONSTRUCTION, PANEL FOR CONSTRUCTION USING THE
BLOCK, AND METHOD OF FORMING PANEL FOR CONSTRUCTION
TECHNICAL FIELD
I )001]
The present invention relates to a technique for constructing a flat structure such as
h wall, a floor ;Emd a ceiling of a reinforced concrete building.
1; ACKGROUND ART
I 3002]
When constructing a structure such as a wall, a floor and a ceiling of a reinforced
( oncrete mold is assembled at a construction site, and reinforcing bars are arranged in the
1 aold, followed by casting of concrete.
0003]
In the above on-site casting method, however, it takes considerable labor and time
o assemble a concrete mold, to cast concrete, and to harden and cure the concrete, which
linders effort to shorten work periods. Furthermore, these steps require highly-skilled
;xpert engineers in each field.
0004]
In addition, a broad work space is needed for carrying in a mold and reinforcing
Dars to a site as well as for assembling members and casting concrete. Therefore, if a road
leading to a construction site is narrow or a site is small, workability is extremely lowered.
[000 5]
In view of the above problems, some other techniques for constructing a structure
sue 1 as a wall, a fence and a basic foundation have been developed. Specifically, various
kin is of concrete blocks that have been fabricated in a plant beforehand are carried in to a
CO istruction site, these concrete blocks are arranged in vertical and horizontal directions to
fo m a flat body, and the blocks are fixed to each other with a given connecting means,
th ireby constructing a wall or a fence (see the patent documents 1 and 2, for example).
[(006]
In the stacking-type concrete block described in the patent document 1, connecting
p Ji members jure inserted into a plurality of pipe members implanted in top and bottom
s jrfaces of the blocks to connect the blocks to each other, thereby constructing a wall, a
1 lasic foundation, or the like.
0007]
In the method of constmcting a block wall described in the patent document 2, a
number of concrete blocks are laid out in vertical and horizontal directions, joint surfaces of
each of the concrete blocks are bonded with an adhesive agent while inserting steel bars for
loading tensile force into predetermined positions to fasten the blocks. A block panel thus
formed is built up as a wall.
[0008]
Patent Document 1: Unexamined Japanese Utihty Model Registration Publication
No. Sho 64-7618 (pages 5 to 9)
Patent Document 2: Unexamined Japanese Patent PubUcation No. Sho 55-39569
(pages 3 to 8)
DISCLOSURE OF THE INVENTION
PROBLEMS TO BE SOLVED BY THE INVENTION
0009]
In the stacked-type concrete block described in the patent document 1, the use of
he connecting pin members enables the blocks to be accurately and securely stacked,
iowever, as the connecting pin members have to be provided on every boundary portion
)etween the blocks abutting in a vertical direction, the work requires a large amount of time
ind labor.
0010]
Moreover, since the connecting pin members do not pull the blocks to fix them to
;ach other, if puUing force is loaded in axial directions of the connecting pin members at the
>oundary portions between the stacked and constructed blocks, the blocks may separate.
^s a result, whereas this block is preferable to the structures on which only compressive
orce in the axial directions of the connecting pin members is loaded, such as a wall, a fence
i nd a basic foiundation, it is not suitable for the structure such as a floor of a building where
I xtemal force can be loaded in a direction of deflection.
0011]
On the other hand, the method of constructing a block wjill described in the patent
I ocument 2, joint surfaces of a number of blocks laid out in vertical and horizontal
(irections are bonded with an adhesive agent while inserting steel bars for loading tensile
iOTce to fasten the blocks, thereby forming a block panel. In this case, the force of
«onnecting blocks to each other is small because the places into which the steel bars for
] jading tensile force are inserted are joint portions of adjacent blocks.
13012]
Furthermore, as the joint surfaces of these blocks are bonded with an adhesive
• gent, the blocks has poor durability because the jointed portions of the blocks sometimes
break up or cause a gap therebetween due to deterioration or shrinkage of the adhesive agent
with passage of time after construction.
[0013]
A problem to be solved by the present invention is to provide a technique for
constructing a flat structure such as a wall or a floor of a building in a relatively short time
md an easy manner while improving durability of the flat structure.
vlEANS FOR SOLVING THE PROBLEMS
0014]
A block for construction according to the present invention is a block for
( onstmction capable of constructing a flat structure by arranging the plurality of blocks in a
) at state with outer peripheral surfaces thereof brought into contact with each other, the
1 lock for construction comprising a plurality of through holes formed for inserting linear or
t ar-like stretching members, and recessed parts formed on outer peripheral surfaces crossing
a 1 axial direction of the through holes to dispose, in a direction three-dimensionally
c ossing an axial direction of the stretching members, other stretching members.
[U015]
In the above structure, the plurality of the blocks for construction are arranged in a
fl it state so as to have contact with each other on their outer peripheral surfaces in such a
n aimer that the plurality of the through holes communicate with each other while inserting
tie stretching members into the plurality of the through holes and disposing the stretching
msmbers on the recessed parts. By generating tensile force on these stretching members,
tb i blocks for construction are bonded by pressure to form a flat structure.
[0016]
Accordingly, by building up the above flat structure as a wall, a floor or a ceiling
vhen constructing a building, the flat structure such as the wall or the floor can easily be
I onstructed in a relatively short time, hi addition, the adjacent blocks for construction are
>onded with pressure by the stretching members only, which causes no deterioration of an
-dhesive agent, leading to excellent durabiUty.
0017]
Here, the plurality of through holes may preferably be provided in parallel with
;ach other with intervals therebetween in a through-thickness direction of a body of the
)lock or in a direction perpendicular thereto. With this arrangement, the body of the block
;an be firmly held with the stretching members inserted into these through holes, and thus
he strength after construction of the flat stmcture is further increased.
0018]
As another arrangement, if a plurality of cavities opening at more than one place on
;he outer peripheral surfaces is provided, the weight of the body of the block itself can be
decreased, and heat insulation is also improved. Moreover, after arranging the bodies of
the plurality of blocks for construction to form the flat structure, the cavities can
conmiunicate with each other in a direction along the surfaces, thereby decreasing the
weight of the flat structure and improving the heat insulation thereof.
[0019]
Next, a panel for constmction according to the present invention is a panel for
constmction formed by arranging the plurality of the above-described blocks for
construction in a flat state with outer peripheral surfaces thereof brought into contact with
each other with the plurality of through holes being communicated, inserting the stretching
members into the plurality of through holes while disposing the stretching members on the
recessed parts, and bonding the blocks for constmction by pressure by generating tensile
force on these stretching members.
[ )020]
By the above structure, a flat structure such as a wall or a floor of a building can be
t asily constructed in a relatively short time. No adhesive agent is used at all, and thus the
durability of the flat structure is also improved.
10021]
Preferably, reaction force members for generating tensile force on the above-
I lescribed stretching member may be attached to outer peripheral surfaces of the blocks for
I onstmction, which are located on peripheral portions of the panel for construction. The
eaction force members thus attached can appropriately generate tensile force on the
tretching members, which further enhances the strength and durability. In this case, if the
eaction force members are attached so as to cover whole peripheral portions like a frame,
he rigidity is increased while the reaction force of the tensile force generated on the
itretching members can be dispersed over the whole peripheral portions. Consequently,
feneration of cracks caused by stress concentration can be prevented.
0022]
In this case, preferably, a gap fiUing agent may intervene between the adjacent
jlocks for construction for dispersing reaction force. By this structure, in the panel for
^onstmction, small gaps occurring from poor precision manufacturing of the blocks existing
oetween the adjacent blocks for constmction are filled with the gap filling agent. Thus,
compressive stress generated between the blocks for construction due to the pressure
jxerted on the blocks for construction by the tensile force of the stretching members is
anifonnly dispersed by the gap filling agent existing between the adjacent blocks for
constmction and transmitted all over the adjacent blocks for constmction. Therefore,
generation of cracks or ruptures on the blocks for constmction due to concentration of the
compressive stress can be prevented.
I )023]
In this case, the above-described gap fiUing agent to be employed may be a curable
I aste or a material deformable by the pressure of the bonded blocks for construction. Here,
iQe curable paste refers to a substance which is a paste at the start of use and, after
( vaporation of water or a solvent, or through chemical reaction such as hardening reaction,
! las a property of hardening to the extent not to mpture by the pressure of the bonded blocks
or constmction. The material deformable by the pressure of the bonded blocks means that
it least a part of the material is deformable so as to fill the gap between the blocks along the
;hape of the gap when the material is clamped between the blocks for constmction.
0024]
The gap filling agents having the above-described properties seep or cause
lefomiation between the adjacent blocks for constmction by the pressure exerted on the
>locks for constmction by the tensile force of the stretching members, and fill the gap
jxisting between the blocks for constmction. Thus, most of the small gaps between the
olocks for constmction can be eliminated. Accordingly, the compressive stress generated
oetween the blocks for constmction is unifonnly dispersed and transmitted through the gap
filling agent, thereby preventing generation of cracks or raptures due to stress concentration,
rhe above filling agents intervene between the adjacent blocks for constmction when
arranging the plurality of blocks in a flat state. M the case of curable paste, preferably,
when the paste is hardened to the state in which the paste itself can transmit the compressive
stress, the blocks for constmction are pressurized and bonded to fill the gaps between the
blocks for constmction. As the material deformable by the pressure of the bonded blocks,
a paper material (cardboard, for example), a metallic material (a steel sheet, for example) or
the like can be employed.
[0025]
If a cement paste or liquid glass is used as the curable paste, small gaps existing
I )etween the adjacent blocks for construction can be filled in without any unevenness and
eaks, which leads to an excellent stress dispersing function. Similar to the above, it is
^referable that the blocks for construction are bonded with pressure at the point that the
:ement paste or the liquid glass is hardened to the state in which it can transmit the
;ompressive stress.
0026]
Meanwhile, as the reaction force member described above, preferably, a block body
laving a solid structure may be used in a region close to the peripheral portion of the panel
:br construction. Here, the solid structure refers to a structure having neither a through
lole nor a cavity except an opening for inserting a bolt. By this structure, it is possible to
prevent the reaction force member from rupture or damage due to pulling force loaded on
he reaction force member (the block body) for generating tensile force on the stretching
nembers.
[0027]
Next, a method of forming a panel for stracture according to the present invention
is a method comprising steps of arranging the plurahty of above-described blocks for
;onstmction to be adjacent to each other in a flat state with a gap filling agent for dispersing
stress intervening between outer peripheral surfaces of the blocks for construction and with
the plurahty of above-described through holes communicating with each other, inserting
stretching members into the plurahty of through holes while disposing stretching members
on the above-described recessed parts, and loading tensile force on the stretching members
to bond the blocks for construction with pressure.
[0028]
By the above structure, a panel for constmction suitable for a flat structure such as
1 wall or floor of a building can be easily fonned in a relatively short time. Furthermore,
1 ae intervention of the gap filling agent eliminates generation of cracks or rupture due to
tress concentration, thereby further improving the strength and the durability.
ADVANTAGE OF THE INVENTION
0029]
(1) In a block for construction capable of constructing a flat structure by arranging
I plurality of the blocks with their outer peripheral surfaces brought into contact with each
jther, provided are a plurality of through holes formed for inserting linear or bar-like
stretching members and recessed parts formed on outer peripheral surfaces crossing the
ixial direction of the through holes to dispose, in a direction three-dimensionally crossing
;he stretching members, other stretching members. Therefore, by simply arranging these
blocks for structure in a flat state and connecting them, a flat stracture such as a wall or a
floor of a building can be constmcted in a relatively short time and an easy manner while
enhancing the durability of the flat stmcture.
[0030]
(2) A plurality of through holes is provided in parallel with each other with
intervals therebetween in a through-thickness direction of a body of the block or a direction
vertical thereto. As this enables the block body to be firmly held with the stretching
members inserted into these through holes, the strength after constmction of the flat
stmcture is further increased.
[0031]
(3) Cavities opening at more than one place provided on the above-described outer
peripheral surfaces can decrease the weight of the block body itself and render heat
insulation. In addition, when arranging the plurality of blocks for structure to form a flat

tructure, these cavities can communicate with each other in a direction along the surfaces
o that the weight of the flat structure can be decreased while improving the heat insulation
hereof.
0032]
(4) A panel for construction is formed by arranging the blocks for construction as
lescribed in the above (1) to (3) in a flat state with outer peripheral surfaces thereof brought
into contact with each other and with the plurality of through holes being communicated,
inserting the stretching members into the plurality of through holes while disposing the
stretching members on the recessed parts, and bonding the blocks for construction by
pressure by generating tensile force on these stretching members. By this stmcture, a flat
structure such as a wall or a floor of a building can be easily constructed in a relatively short
time. No adhesive agent is used at all, and thus the durability of the flat structure is also
improved.
[0033]
(5) By attaching reaction force members for generating tensile force on the above
stretching members to outer peripheral surfaces of the blocks for constmction, which are
located on peripheral portions, the strength and the durability can be further improved.
[0034]
(6) With a gap filling agent intervening between the adjacent blocks of construction
for dispersing reacting force, gaps between the adjacent blocks for construction are filled
with the gap filling agent, and the compressive stress generated between the blocks for
constmction is uniformly dispersed and transmitted over the adjacent blocks for
constmction. Therefore, generation of cracks or ruptures on the blocks for constmction
due to concentration of the compressive stress can be prevented.
[0035]

(7) As the above gap filling agent, if a curable paste, or a metallic or paper material
vhich is deformable by the pressure of the bonded blocks for construction is employed,
nost of the smaU gaps between the blocks for constmction can be eliminated, thereby
preventing generation of cracks or ruptures due to stress concentration.
0036]
(8) By using a cement paste or liquid glass as the curable paste, small gaps existing
between the blocks for construction can be filled in a relatively easy operation without
causing any unevenness. Accordingly, generation of cracks or ruptures due to stress
concentration can be eliminated.
[0037]
(9) As the reaction force member described above, if a block body having a solid
structure is used in a region close to the peripheral portion of the panel for constmction, it is
possible to prevent the reaction force member from mpture or damage due to pulling force
loaded on the reaction force member for generating tensile force on the stretching members.
[0038]
(10) The method of the present invention includes steps of arranging the plurality
of blocks for construction described above (1) to (3) in a flat state to be adjacent to each
other with a gap filling agent for dispersing stress intervening between outer peripheral
surfaces of Ihe blocks for construction and with the plurality of above-described through
holes communicating with each other, insertiing stretching members into the plurality of the
through holes while disposing stretching members on the above-described recessed parts,
and loading tensile force on the stretching members to bond the blocks for constmction by
pressure. By this method, it is possible to form a panel for construction with high strength
and durability suitable for a flat structure such as a wall or a floor of a building easily in a
relatively short time.
BRIEF DESCRIPTION OF THE DRAWINGS
[0039]
[Fig. 1] Fig. 1 is a perspective view illustrating a block for construction of a first
embodiment of the present invention.
[Fig. 2] Fig. 2 (a) is a plan view of the block for construction in Fig. 1; (b) is a front
view of the same block; and (c) is a side view of the same block.
[Fig. 3] Fig. 3 is a perspective view illustrating a block for construction of a second
embodiment of the present invention.
I [Fig. 4] Fig. 4 (a) is a plan view of the block for construction in Fig. 3; (b) is a front
view of the same block; and (c) is a side view of the same block.
[Fig. 5] Fig. 5(a) is a perspective view of a panel for construction formed with the
block for constmction in Fig. 1; and (b) is a perspective view illustrating an arrangement of
stretching members in the panel for construction.
5 [Fig. 6] Fig. 6 is an exploded perspective view illustrating a comer portion of the
panel for construction in Fig. 5 (a).
[Fig. 7] Fig. 7 is a schematic view illustrating a state where tensile force is loaded
on the stretching members of the panel for construction in Fig. 5.
[Fig. 8] Fig. 8 (a) is a perspective view illustrating a panel for constmction formed
3 with the block for construction in Figs. 1 and 2; and (b) is a perspective view illustrating an
arrangement of stretching members in this penal for constmction.
[Fig. 9] Fig. 9 is a partially omitted perspective view illustrating a state where a
wall and a floor of a building are constructed by the panel for construction in Fig. 5 (a) and
Fig. 8 (a).
5 [Fig. 10] Fig. 10 is a perspective view illustrating a fence constructed by combining

janels for construction fonned with the block for construction in Fig. 1.
[Fig. 11] Fig. 11 is a plan view illustrating a block for construction of a third
imbodiment of the present invention.
[Fig. 12] Fig. 12 is a side view of the block for construction in Fig. 11.
[Fig. 13] Fig. 13 is a plan view illustrating a block for construction of a fourth
embodiment of the present invention.
[Fig. 14] Fig. 14 is a side view of the block for construction in Fig. 13.
[Fig. 15] Fig. 15 is a plan view of aji auxiliary block which is used in combination
with the block for construction in Figs. 11 and 13.
[Fig. 16] Fig. 16 is a side view of the auxihary block in Fig. 15.
[Fig. 17] Fig. 17 is a perspective view illustrating a panel for construction formed
with the block for construction in Figs. 11 and 13.
[Fig, 18] Fig. 18 is a partially cutaway perspective view of the panel for
construction in Fig. 17.
[Fig. 19] Fig. 19 (a) is a partially enlarged perspective view of the panel for
construction in Fig. 17; and (b) is a partially enlarged view of (a).
[Fig. 20] Fig. 20 (a) is a sectional view taken along the line A-A of Fig. 17; and (b)
is a sectional view taken along the line B-B of Fig. 17.
EXPLANAI ION OF REFERENCE NUMEl^LS
[0040]
10, 20, 70, 80: block for construction
10a, 20a, 70a, 80a: upper surface
10b, 20b, 70b, 80b: lower surface
10c, 20c, 70c, 80c: left side surface

lOd, 20d, 70d, 80d: right side surface
lOe, 20e, 70e, 80e: rear surface
lot 20t 70f, 80f: front surface
lOw, 20w, 70w, 80w, 90w: dimension in length direction
lOt, 20t: through-thickness direction
11.21, 33,71, 81, 91: through hole
12.22, 72, 82,92: recessed part
13, 23, 73, 83: cavity
14, 24, 74, 84: groove
30, 30X, 30Y, 31: stretching member
32: reaction force member
30a, 31a: external thread part
34a, 34b, 34c, 34d, 34e: holding plate
35, 37: nut
36: spring washer
40, 41,42, 50,100: panel for constmction
43: fence
60, 61: beam
90,90h: auxiUaiy block
93: recessed part
C: ceiling
F: floor
SP: cement paste
W:waU

BEST MODE FOR CARRYING OUT THE INVENTION
[0041]
In reference to Figs. 1 to 10, explained below are a block for construction and a
panel for construction according to first and second embodiments of the present invention.
[0042]
As shown in Figs. 1 and 2, a block for construction 10 of the first embodiment of
the present invention is, as further described below, a block capable of constructing a flat
structure by arranging the plurahty of blocks in a flat state with four outer peripheral
surfaces thereof, that are, an upper surface 10a, a lower surface 10b, a left side surface 10c
and a right side surface lOd brought into contact with each other. In the block for
constmction 10, a plurality of through holes 11 for inserting bar-Uke stretching members
therein, as fiirther described below, are formed in parallel with a fi-ont surface 1 Of and a rear
surface lie, and recessed parts 12 are formed on the upper surface lOa and the lower
surface 10b forming outer peripheral surfaces crossing an axial direction of the through
holes 11 to dispose, in a direction three-dimensionally crossing the stretching members
inserted into the through holes 11, other stretching members.
[0043]
The block for construction 10 is fiirther formed with five cavities 13 opening on the
upper surface 10a and the lower surface 10b in a maimer of penetrating the block for
constmction 10. On each of the left side surface 10c and the right side surface lOd, a
groove 14 is formed in the same direction of the arranging direction of the cavities 13.
[0044]
A block for construction 20 illustrated in Figs. 3 and 4 is, similar to the block for
constmction 10, a block capable of constracting a flat structure by arranging the plurality of
blocks in a flat state with four outer peripheral surfaces thereof, that are, an upper surface

2{)a, a lower surface 20b, a left side surface 20c and a right side surface 20d brought into
contact with each other. In the block for construction 20, a plurality of through holes 21
for inserting stretching members therein are formed in parallel with a front surface 20f and a
rear surface 20e, and recessed parts 22 are formed on the upper surface 20a and the lower
surface 20b forming outer peripheral surfaces crossing an axial direction of the through
holes 21 to dispose, in a direction three-dimensionaily crossing the stretching members
inserted into the through holes 21, other stretching members.
[0045]
The block for construction 20 is also formed with two cavities 23 opening on the
upper surface 20a and the lower surface 20b in a marmer of penetrating the block for
construction 20. On each of the left side surface 20c and the right side surface 20d, a
groove 24 is formed in the same direction of the arranging direction of the cavities 23.
[0046]
As described above, the only difference between the block for construction 10 and
the block for construction 20 is the dimension in a length direction. The dimensions and
structures of the remaining parts are the same. In other words, only a dimension in a
length direction lOw of the block for constraction 10 is a double of a dimension in a length
direction 20 w of the block for construction 20, and other features are the same.
[0047]
As shown in Fig. 5 (a), the plurality of blocks for construction 10 are arranged in a
flat state so that the outer peripheral surfaces thereof are brought into contact with each
other and that the plurality of through holes 11 linearly communicates with each other in the
axial direction. As shown in Fig. 5 (b), stretching members 30 are inserted into the
plurality of through holes 11 conomunicating with each other, and stretching members 31 are
disposed on the recessed parts 12. Then, reaction force members 32 are attached along the

outer peripheral surfaces of the blocks for construction 10 located on an utmost outer
periphery. As shown in Fig. 6, holding plates 34a, 34b and 34c are mounted on external
thread parts 30a and 31a of the stretching members 30 and 31 that are protruding from
through holes 33 of the reaction force members 32, spring washers 36 are attached, and nuts
35 are screwed thereon.
[0048]
Then, by fastening the nuts 35 to generate tensile force on the stretching members
30 and 31, ttie blocks for construction 10 are firmly bonded together and, as shown in Fig. 5,
a panel for construction 40 which is a flat structure is formed. In this case, at the portions
where the reaction force members 32 abut on each other, it is preferable to use the holding
plates 34a eind 34c that are long enough to stride over the adjacent portions so that the
adjacent reaction force members can be firmly connected to each other.
[0049]
As the stretching members 30 and 31, if deformed reinforcing bars provided with
external threads on outer peripheries thereof are employed, the nuts 35 can be screwed on
without forming the external threads parts 30a and 31a. In addition, if the stretching
members 30 and 31 are coated with a corrosion-resistant material such as a resin pipe, the
corrosion nisistance is enhanced to prevent rust development due to moisture infiltrating
from boundaries between the blocks for construction 10. Furthermore, the spring washers
36 intervening between the holding plates 34a, 34b and 34c and the nuts 35 can prevent
deterioration of the tensile force caused by contraction of the block for constmction 10 or
extension of the stretching members 30 and 31.
[0050]
In a panel for construction 40, the stretching members 30 and the stretching
members 31 are disposed in a manner peripendicularly crossing each other lengthwise and

crosswise. ^.Vhile the stretching members 31 are disposed one by one in each of the spaces
formed by the adjacent recessed parts 12, the stretching members 30 are disposed two by
two to be arrmged in a through-thickness direction of the panel. Thus, the numbers of the
stretching members disposed are different lengthwise and crosswise. Accordingly, when
fastening the nuts 35 to load tensile force on the stretching members 30 and 31, the tensile
force is differentiated so as to equalize the strength in a direction of deflection of the panel
for construction 40.
[0051]
Specifically, as shown in Fig. 7 (a), when 10 tons of tensile force is loaded on the
stretching members 31 in the direction of arrows, it is preferable that, in two stretching
members 3GX and 30Y shown in Fig. 7 (b), 10 tons of tensile force is loaded in the direction
of arrows on the stretching member 30X located on an upper side, while 5 tons of tensile
force is loaded in the direction of arrows on the stretching member 30Y located on a lower
side. By loading tensile force in this manner, the difference between the strength of the
panel for constmction 40 in the direction of the stretching members 31 and tlie strength in
the direction of the stretching members 30X and 30Y can be considerably decreased,
thereby equalizing the strength of the panel for construction 40 in the direction of deflection.
[0052]
In the panel for construction 40, the blocks for constmction 10 are arranged in a
grid pattern. However, as shown in Fig. 8, it is possible to arrange the plurality of blocks
for construction 10 in a zigzag pattem to form a panel for constmction 50. In this case, the
blocks for constmction 20 shown in Fig. 3 are arranged in peripheral portions so as to fomi
an utmost periphery straight. The sttetcidng members 30 and 31 and the reaction force
members 32 are mounted in a similar manner to the panel for construction 40.
[0053]
When constructing a building, as shown in Fig. 9, the panels for construction 40
anc 50 formed as above are built up as a wall W, a floor F and a ceiling C, thereby easily
con jtmcting these flat structures in a relatively short time. In this case, by providing
beaiQs 60 and 61 on a connecting portion between the wall W and the floor F and on a
conjiecting portion between the wall W and the ceiling C to receive the peripheral portions
of tie panels for construction 40, these connecting portions can be easily constmcted while
enha acing the strength.
[005 \r]
In the panels for construction 40 and 50, the blocks for construction 10 and 20 are
bond;d only by the stretching members 30 and 31 without using any adhesive agent.
Then fore, no deterioration of an adhesive agent is caused after constmction, leading to
excel ent durability.
[005*1
As shown in Figs. 1 to 4, the plurality of through holes 11 and 21 in the blocks for
constmction 10 and 20 are provided in parallel with each other with intervals therebetween
in thoiigh-thickness directions lOt and 20t of the blocks 10 and 20 or on the dimensions in a
length direction lOw and 20w which are perpendicular to the through-thickness directions
lOt arid 20t. Accordingly, the stretching members 30 inserted into these through holes 11
and 2 can securely hold the blocks 10 and 20 to construct the panels for construction 40
and 5( with high strength.
[0056
On the other hand, as the blocks for construction 10 and 20 have the cavities 13 and
23 opt ning on the upper and lower surfaces, respectively, when arranging the blocks for
constmction 10 and 20 to form the panels for constmction 40 and 50, these cavities 13 and
23 con municate with each other in a surface direction. Thus, the weight of the panels for

cor stmction 40 and 50 can be decreased while providing good heat insulation.
[0057]
In the panels for constraction 40 and 50, the reacting force members 32 are
attached to the outer peripheral surface of the blocks for constmction 10 and 20 located on
the peripheral portions of the panels to generate tensile force on the stretching members 30
and 31. Therefore, it is possible to generate appropriate tensile force on the stretching
mi mbers 30 and 31 to provide excellent strength and durability. Moreover, as the reaction
foi ce members 32 are attached so as to cover whole peripheral portions like a frame, the
rij idity is increased while the reaction force of the tensile force generated on the stretching
members 30 and 31 can be dispersed over the whole peripheral portions. Consequently,
gt neration of cracks caused by stress concentration can be prevented.
[C058]
The length/width ratios and the dimensions of the panels for constraction 40 and 50
Can be optionally set by changing the number of the blocks for constructions 10 and 20 to be
a ranged lengthwise and crosswise or the total number of the blocks, enabling a wide use as
v irious kinds of flat stmctures constracting a building. Additionally, as shown in Fig. 10,
f anels for construction 41 and 42 having different shapes (lengthwise/crosswise ratios) or
ciimensions formed by the plurality of blocks for constraction 10 can be combined to form a
] lat stractuie such as a fence 43.
10059]
Next, in reference to Figs. 11 to 20, a block for constraction and a panel for
;onstraction using the block according to titiird and fourth embodiments of the present
nvention are explained.
[0060]
As shown in Figs. 11 and 12, a block for constraction 70 of the first embodiment is

a bl )ck capable of constructing a flat structure (a panel for construction) described below by
arranging the plurality of blocks in a flat state with four outer peripheral surfaces thereof,
tha) are, an upper surface 70a, a lower surface 70b, a left side surface 70c and a right side
sun ace 70d brought into contact with each other. In the block for construction 70, a
pluiality of through holes 71 for inserting bar-like stretching members therein, as further
described below, are formed in parallel with a front surface 70f and a rear surface 70e, and
rec ;ssed parts 72 are formed on the upper surface 70a forming an outer peripheral surface
creasing an axial direction of the through holes 71 to dispose, in a direction three-
dii lensionally crossing the stretching members inserted into the through holes 71, other
str itching members.
I0«)61]
The block for constmction 70 is further formed with five cavities 73 opening on the
uj per surface 70a and the lower surface 70b in a manner of penetrating the block for
c( nstmction 70. On each of the left side surface 70c and the right side surface 70d, a
gi Dove 74 is formed in the same direction of the arranging direction of the cavities 73.
((•062]
A block for constmction 80 illustrated in Figs. 13 and 14 is used in combination
V ith the block for constmction 70 and is a block capable of constmcting a flat stmcture by
a Tanging the plurality of blocks 80 in a flat state with three outer peripheral surfaces thereof,
tiiat are, an upper surface 80a, a lower surface 80b and a left side surface 80c brought into
( ontact with the block for constmction 70. Iq the block for construction 80, a plurahty of
t arough holes 81 for inserting stretching members therein are formed in parallel with a front
urface 80f and a rear surface 80e, and recessed parts 82 are formed on the upper surface
^Oa forming an outer peripheral surface crossing an axial direction of the through holes 81
o dispose, in a direction three-dimensionally crossing the stretching members inserted into

the through holes 81, other stretching members.
[0063]
The block for construction 80 is further formed with a plurality of cavities 83
op bk ck for construction 80. On the left side surface 80c that is one side surface of the block
foi construction 80, a groove 84 is formed in the same direction of the arranging direction of
thi cavities 83.
[0)64]
In the block for constmction 70 and the block for construction 80, dimensions 70w
ai d 80w in length directions are the same, and the numbers and positions of the through
hi les 73 and 83 are the same. However, the numbers of the cavities 73 and 83 and the
g ooves 74 and 84 are different. Specifically, in the block for construction 70, the five
c ivities 73 are symmetrically disposed and the groove 74 is formed on both of the left side
surface 70c and the right side surface 70d whereas, in the block for construction 80, the
tiree cavities 83 are disposed between a center and the left side surface 80c and the groove
J 4 is formed only on the left side surface 80c.
I 3065]
An auxiliary block 90 illustrated in Figs. 15 and 16 is to be combined with the
!)locks for construction 70 and 80 to form a panel for construction explained later. The
luxiliary block 90 has the same outer dimension as those of the blocks for construction 70
and 80 shown in Fig. 11, and is a block body having a rectangular parallelepiped shape with
flat outer peripheral surfaces, provided with a plurality of through holes 91 having the same
sizes on the positions corresponding to the positions where the plurality of through holes 71
and 81 are provided on the blocks for constmction 70 and 80.
i [0066]

As shown in Fig. 17, the plurality of block for construction 70 are arranged in a flat
St; ite with the outer peripheral surfaces thereof brought into contact with each other and with
tie plurality of through holes 71 linearly communicating with each other in an axial
d rection. Then, as shown in Fig. 20 (a), the stretching members 30 are inserted into the
{lurahty of through holes 11 communicating with each other and, as shown in Fig. 20 (b),
lae stretching members 31 are disposed in a recessed part 82. In this case, on both distal
;nds of the stretching members 30, the auxiUary block 90 shown in Fig. 15 is disposed and,
3n the positions near the both distal ends of the stretching members 31, an auxiliary block
90h (see Fig. 18) is disposed. The auxiUary block 90h has a dimension in a length
direction 90w which is a half those of the block for construction 80 and the auxiliary block
90 shown in Fig. 13 and has a recessed pait 93. As shown in Fig. 20 (b), the block for
constmction 80 is arranged with the groove 84 facing toward a center of the stretching
member 30 in an axial direction, exposing the right side surface 80d where the groove 84 is
not formed.
[0067]
When arranging the blocks for constmction 70 and 80 and the auxihary block 90,
as shown in Fig. 19 (a), a cement paste SP which is a gap filling agent for dispersing stress
is provided to intervene between the adjacent blocks. The cement paste SP is a curable
paste material. The one used in the present embodiment is formed by mixing early-
strength Portland cement and water in the ratio of around 2.6:1,0. In Fig. 19 (a), the
cement paste SP is emphatically illustrated like a conventional "joint"; however, the actual
thickness of the cement paste SP is not more than 1mm and, preferably, about 0.1 to 0.2ntun.
[0068]
Then, as shovm in Fig. 20 (a), holding plates 34d are moimted on the external
thread parts 30a of the stretching members 30, which are protrading from the through holes

91 of the blocks for structure 90 located on the outer periphery, foUowed by mounting
spring washers (not shown) and screwing the nuts 37. In addition, as shown in Fig. 20 (b),
h >lding plates :34e are mounted on the external thread parts 31a of the stretching members
3 [, which are protmding from the recessed parts 82 of the blocks for stracture 80 located on
t le outer periphery, followed by mounting spring washers (not shown) and screwing the
1 uts 37.
0069J
At the time when the cement paste SP is cured to be hard enough to transmit
compressive stress, each of the nuts 37 is tightened to generate tensile force on the
stretching members 30 and 31. Thus, as shown in Fig. 19 (b), gaps between the blocks are
filled with the cement paste SP, and the block for structure 70 and 80 and the auxiliary block
90 are firmly bonded to each other with pressure, thereby forming a panel for constmction
100 as a flat stmcture as shown in Fig. 17. In this case, on outer peripheral portions of the
panel for construction 100, disposed are the blocks for structure 80 and the auxiliary blocks
90 and 90h which have no uneven surfaces, cavities and through holes except for bolt-holes
on their exposed portions. Therefore, the blocks can be firmly bonded to each other with
pressure and are free from damages caused by the stress loaded by the stretching members
30 and 31 via the holding plates 34d and 34e.
[0070]
As the stretching members 30 and 31, if deformed reinforcing bars provided with
external threads on outer peripheries thereof are employed, the nuts'-^can be screwed on
without forming the external thread portions 30a and 31a. Li addition, if the stretching
members 30 and 31 are coated with a coirrosion-resistant material such as a resin pipe, the
corrosion resistance is enhanced to prevent rust development due to moisture infiltrating
firom boundaries between the blocks. Furthermore, the spring washers (not shown)

iitervening between the holding plates 34d and 34e and the nuts 37 can prevent
t leterioration of the tensile force caused by contraction of the block or extension of the
itretching members 30 and 31.
;0071]
hi the panel for construction 100, the blocks 90, 90h and -80, as the reaction
members for generating tensile force on the stretching members 30 and 31, are disposed on
peripheral portions of the panel for construction 100. Accordingly, the tensile force can be
appropriately generated on the stretching members 30 and 31, which leads to excellent
strength and durability. Furthermore, smce die blocks 90,90h and 80 as the reaction force
members are disposed so as to cover whole peripheral portions, the reaction force of the
tensile force generated on the stretching members 30 and 31 can be dispersed over the
whole peripheral portions. Consequently, geneiution of cracks due to stress concentration
can be prevented.
[0072]
5 As shown in Fig. 19 (b), in the panel for construction 100, the cement paste SP
which is a gap filling agent for dispersing reacting force intervenes between the adjacent
blocks for construction 70 and 80 and the auxiUary blocks 90 and 90h so that gaps between
the adjacent blocks are filled with the cement paste SP. By this stmcture, compressive
stress generated between the blocks is uniformly dispersed and transmitted through the
1 adjacent blocks. Therefore, generation of cracks or mptures on the blocks for constmction
70 and 80 and the auxiliary blocks 90 and 90h due to the concentration of compressive
stress can be prevented.
[0073]
In the above structure, the cement paste SP is employed as a gap filling agent. As
5 a result, in the panel for construction lOO, most of the small gaps between the adjacent

blocl s for construction 70 and 80 and the auxiliaiy blocks 90 and 90h can be eliminated,
and lie compressive stress is vmiformly dispersed and transmitted, thereby preventing
generation of cracks or ruptures due to stress concentration. Other gap filling agents for
dispersing stress than the cement paste SP may be a paper material, liquid glass, or a
metiillic material which is deformable by the pressure of the bonded blocks exerted by
ten; ile force generated on the stretching members 30 and 31 (a ferrous material such as a
stet I sheet, for example).
[00 74]
Meanwhile, the block for constmction 80 and the auxiliary blocks 90 and 90h
wl ich are block bodies having a solid structure are used in regions close to the peripheral
po lions of the panel for construction 100. Therefore, the force loaded on these blocks 80,
9( and 90h as the reaction force members to generate tensile force on the stretching
m ambers 30 and 31 does not break or damage the blocks 80, 90 and 90h. Moreover, with
tl e presence of the stretching members 30 and 31, the panel for constmction 100 can be
e astically deformed in a deflective direction.
I )075]
The length/width ratio and the dimension of the panel for construction 100 can be
I iptionally set by changing the number of the blocks for constmction 70 and 80 and the
luxiliary blocks 90 and 90h to be arranged lengthwise and crosswise or the total number of
che blocks. Accordingly, the panel for constmction 100 can be widely used as a various
kinds of flat structures constructing a building.
INDUSTRIAL APPLICABILITY
[0076]
The block for constmction and the panel for constmction according to the present

inv ;ntion can be widely used as materials for fonning a flat structure such as a wall, a floor,
a ct iling or a fence of a building.
AMENDMENT OF THE CLAIMS
1. A block for construction capable of constracting a flat stracture by
arrjsnging the plurality of blocks in a flat state with outer peripheral surfaces thereof brought
int 1 contact with each other, the block for construction comprising:
a plurality of through holes formed for inserting linear or bar-like stretching
me mbers, and
recessed parts formed on said outer peripheral surfaces crossing an axial direction
of said through holes to dispose, in a direction three-dimensionaUy crossing an axial
di nection of said stretching members, other stretching members.
2. The block for constmction as claimed in claim 1, wherein said plurality of
tb rough holes are provided in parallel with each other with intervals therebetween in a
tl xough-thickness direction of a body of said block for construction or in a direction
perpendicular thereto.
3. The block for constmction as claimed in claim 1 or 2, wherein a plurality
tf cavities opening at more than one place on said outer peripheral surfaces are provided.
I 4. A panel for constmction formed by arranging said plurality of blocks for
constmction claimed in any one of claims 1 to 3 in a flat state with outer peripheral surfaces
thereof brought into contact with each other with said plurality of through holes being
communicated, inserting said stretching members into the plurality of through holes while
disposing the stretching members on said recessed parts, and bonding said blocks for
5 constmction with pressure by generating tensile force on said stretching members.
5. (Amended) The panel for construction as claimed in claim 4, wherein a
gao filling agent for dispersing reaction force intervenes between said blocks for
coastmction which are adjacent to each other.
6. (Amended) The panel for construction as claimed in claim 4 or 5, wherein
reaction force members for generating tensile force on said stretching member are attached
to outer peripheral surfaces of said blocks for constmction, the outer peripheral surfaces
b( ing located on peripheral portions of said panel for construction.
7. (Amended) The panel for constmction as claimed in claim 6, wherein a
b ack body having a solid structure is used as said reaction force member in a region close
tc a peripheral portion of said panel for constmction.
8. (Amended) The panel for construction as claimed in claim 5, wherein said
g ip filling agent is a curable paste or a material deformable by bonding pressure of said
b ocks for constmction.
9. (Amended) The panel for constmction as claimed in claim 8, wherein said
10. A method of forming a panel for structure comprising steps of:
arranging said plurality of blocks for constmction claimed in any one of clauns 1 to
to be adjacent to each other in a flat state with a gap filling agent for dispersing stress
5 ntervening between outer peripheral surfaces of said blocks for constmction and with said

plarality of through holes communicating with each other,
inserting stretching members into said plurality of the through holes while
disposing said stretching members on said recessed parts, and
loading tensile force on said stretching members to bond said blocks for
construction with pressure.

A block (10) for construction capable of constructing a flat structure by arranging
the plurality of blocks in a flat state with four outer peripheral surfaces thereof, that are, an
upper surface (10a), a lower surface (10b), a left side surface (10c), and a right side surface
(10d) brought into contact with each other. In the block (10) for construction, a plurality of
thr tugh holes (11) for inserting bar-like stretching members therein are formed parallel with
the front surface (10f) and the rear surface (10e) thereof, and recessed parts (12) are formed
in the upper surface (10a) and lower surface (10b) forming outer peripheral surfaces
crossing the axial direction of the through holes (11) to dispose the other stretching
members in a direction three-dimensionally crossing the stretching members inserted into
the through holes (11). By using the block (10) for construction, the flat structures such as
the wall parts and floor parts of a building can be easily constracted in a rather short period,
and the durabilities of these flat structures can also be increased.

Documents:

02741-kolnp-2005-abstract.pdf

02741-kolnp-2005-claims.pdf

02741-kolnp-2005-description complete.pdf

02741-kolnp-2005-drawings.pdf

02741-kolnp-2005-form 1.pdf

02741-kolnp-2005-form 13.pdf

02741-kolnp-2005-form 3.pdf

02741-kolnp-2005-form 5.pdf

02741-kolnp-2005-international publication.pdf

02741-kolnp-2005-others.pdf

02741-kolnp-2005-priority document.pdf

2741-KOLNP-2005-ABSTRACT 1.1.pdf

2741-KOLNP-2005-ABSTRACT.1.2.pdf

2741-kolnp-2005-abstract.pdf

2741-KOLNP-2005-AMANDED CLAIMS.1.1.pdf

2741-KOLNP-2005-AMENDED CLAIMS.pdf

2741-KOLNP-2005-AMENDED PAGES OF SPECIFICATION.pdf

2741-kolnp-2005-ANNEXURE FORM 3.pdf

2741-kolnp-2005-assignment.pdf

2741-KOLNP-2005-CANCELLED PAGES.pdf

2741-kolnp-2005-claims.pdf

2741-kolnp-2005-CORRESPONDENCE 1.1.pdf

2741-KOLNP-2005-CORRESPONDENCE 1.2.pdf

2741-kolnp-2005-correspondence.pdf

2741-KOLNP-2005-DESCRIPTION (COMPLETE).1.1.pdf

2741-kolnp-2005-description (complete).pdf

2741-KOLNP-2005-DRAWINGS 1.1.pdf

2741-KOLNP-2005-DRAWINGS.1.1.pdf

2741-kolnp-2005-drawings.pdf

2741-KOLNP-2005-FORM 1.1.1.pdf

2741-KOLNP-2005-FORM 1.1.2.pdf

2741-kolnp-2005-form 1.pdf

2741-KOLNP-2005-FORM 13.1.1.pdf

2741-kolnp-2005-form 13.pdf

2741-kolnp-2005-form 18.pdf

2741-KOLNP-2005-FORM 2.1.1.pdf

2741-KOLNP-2005-FORM 2.pdf

2741-KOLNP-2005-FORM 3.1.1.pdf

2741-kolnp-2005-form 3.pdf

2741-kolnp-2005-form 5.pdf

2741-KOLNP-2005-FORM-27.pdf

2741-kolnp-2005-gpa.pdf

2741-KOLNP-2005-PA.pdf

2741-KOLNP-2005-PETITION UNDER RULE 137.pdf

2741-KOLNP-2005-REPLY TO EXAMINATION REPORT.1.1.pdf

2741-KOLNP-2005-REPLY TO EXAMINATION REPORT.pdf

2741-kolnp-2005-specification.pdf

2741-KOLNP-2005-TRANSLATED COPY OF PRIORITY DOCUMENT.pdf

abstract-02741-kolnp-2005.jpg


Patent Number 247537
Indian Patent Application Number 2741/KOLNP/2005
PG Journal Number 16/2011
Publication Date 22-Apr-2011
Grant Date 18-Apr-2011
Date of Filing 28-Dec-2005
Name of Patentee TAMA HOME CO., LTD.
Applicant Address 22-9, TAKANAWA 3-CHOME, MINATO-KU TOKYO
Inventors:
# Inventor's Name Inventor's Address
1 NAKAMURA, MITUO 3-3, MIZUKI 6-CHOME, DAZAIFU-SHI, FUKUOKA 818-0131
PCT International Classification Number E04C 1/00, 2/38
PCT International Application Number PCT/JP2004/010409
PCT International Filing date 2004-07-22
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 2003-279399 2003-07-24 Japan