Title of Invention

A STATOR WINDING METHOD

Abstract In a stator winding method and a stator winding structure, the ends (4a) of windings (4) are caused to become entangled with terminals (6) through a longitudinal rod member (10) and form slack portions (4aA) when the longitudinal rod member is removed, whereby the vibration resistance and impact resistance of the windings can be improved as well as the break thereof can be prevented.
Full Text



STATOR WINDING METHOD AND STATOR WINDING STRUCTURE
BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a stator winding method and a stator winding structure, and more specifically, to a novel improvement in the vibration resistance and impact resistance of windings and the prevention of the break thereof caused by a temperature change, the improvement being achieved by forming slack portions to the windings when they are wound around the teeth of a stator and connected to terminals.
2. Description of the Related Art
In general, the structure shown in FIG. 1 is conventionally employed as this type of the stator winding method and the stator winding structure. That is, what is denoted by numeral 1 in FIG. 1 is a stator which is formed to a ring-shape as a whole and has a plurality of teeth 2 projecting inward and stator insulation covers 3 formed to a ring-shape are disposed to the stator 1 so as to cover the respective teeth 2. Windings 4 are wound around the respective teeth 2 through the outer peripheries of the stator insulation covers 3 by a specific winding method

using a not shown winding machine and the ends 4a of the windings 4 are caused to automatically become entangled with and directly connected to the respective terminals 6 of the terminal plate 5 of the stator insulation covers 3.
Since the prior art stator winding method and stator winding structure are arranged as described above, they have the following problems.
Since the ends of the windings which are wound around the respective teeth are directly wound around the terminals, these ends are stretched between the teeth and the terminals under a tension without any slack. Thus, the ends have low reliability of impact resistance and vibration resistance and prevention of break thereof in use. Thus, the improvement of the reliability has been desired.
An object of the present invention made to solve the above problems is to provide a stator winding method and a stator winding structure capable of improving the vibration resistance and impact resistance of windings and preventing the break thereof caused by a temperature change by forming slack portions to the windings when the windings wound around the teeth of a stator are connected to terminals.
Accordingly, the present invention provides a stator winding method of winding a plurality of windings around a corresponding plurality of teeth of a stator, respectively, and connecting ends of the plurality of windings to a corresponding plurality of terminals, respectively, the plurality of terminals attached to a terminal plate of the stator, comprising the steps of: positioning a longitudinal rod member between the plurality of teeth and the plurality of terminals; connecting the plurality of windings to the plurality terminals, respectively, so that the plurality of windings stride over the longitudinal rod member; and removing the longitudinal rod member from the plurality of windings to thereby form slack portions in the winding, the slack portions located between the plurality of teeth and the plurality of terminals. SUMMARY OF THE INVENTION

According to the present invention, a stator winding method of winding windings around the respective teeth of a stator and connecting the ends of the windings to terminals attached to the terminal plate of the stator insulation covers provided with the stator, the method comprising the steps of positioning a longitudinal rod member between the teeth and the terminals; connecting the windings to the terminals in the state that the windings stride over the longitudinal rod member; and removing the longitudinal rod member to thereby form slack portions to the windings which are located between the teeth and the terminals. Further, according to the present invention, a stator winding structure for winding windings around the respective teeth of a stator and connecting the ends of the windings to terminals attached to the terminal plate of the stator insulation covers provided with the stator comprises slack portions formed by being caused to stride over a longitudinal rod member which is disposed between the teeth and the terminals when the windings are connected.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a view showing the arrangement of prior art stator windings;
FIG. 2 is a view showing a stator winding method and

a stator winding structure according to the present invention; and
FIG. 3 is a view showing the state that winding is being performed in FIG. 1;
DESCRIPTION OF THE PREFERRED EMBODIMENT
A preferred embodiment of a stator winding method and a stator winding structure according to the present invention will be described with reference to the drawings. Parts similar to those of the prior art are described using the same numerals.
As shown in FIG. 3, a stator 1 which is formed to a ring-shape and has a plurality of teeth 2 projecting inward and ring-shaped stator insulation covers 3 are disposed to the respective teeth 2 of the stator 1 to insulate the teeth 2 from windings 4. The windings 4 are wound around the respective teeth 2 through the outer peripheries of the stator insulation covers 3 by a known specific winding method using a not shown winding machine. Since a longitudinal rod member 10 provided with the winding machine is inserted and positioned between the teeth 2 and the terminals 6 above the teeth 2 before the ends 4a of the windings 4 are connected to the terminals 6 of a terminal plate 5 disposed to the stator 1 integrally with the stator insulation covers 3, the ends 4a are

connected to the respective terminals 5 by being caused to become entangled therewith while coming into contact with the upper surface of the longitudinal rod member 10. On the completion of the connection of the ends 4a to the terminal pins 6, slack portions 4aA are formed to the ends 4a as shown in FIG. 2 when the longitudinal rod member 10 is removed in the direction of an arrow A. The longitudinal rod member 10 may be assembled to the winding machine or arranged as an independent system. In addition, the stator 1 may be applicable to various types of known rotating machines such as a resolver, motor, synchro and the like.
Since the stator winding method and the stator winding structure according to the present invention are arranged as described above, the slack portions can be formed to the ends of the windings wound around the teeth, whereby vibration resistance and impact resistance can be improved as well as the break of the windings caused by a temperature change can be prevented. Thus, the reliability of various rotating machines can be greatly improved.














WE CLAIM;
1. A stator winding method of winding a plurality of windings around a corresponding plurality of teeth of a stator, respectively, and connecting ends of the plurality of windings to a corresponding plurality of terminals, respectively, the plurality of terminals attached to a terminal plate of the stator, comprising the steps of: positioning a longitudinal rod member between the plurality of teeth and the plurality of terminals; connecting the plurality of windings to the plurality terminals, respectively, so that the plurality of windings stride over the longitudinal rod member; and removing the longitudinal rod member from the plurality of windings to thereby form slack portions in the winding, the slack portions located between the plurality of teeth and the plurality of terminals.
2. The stator winding method as claimed in claim 1, wherein the stator winding method uses a winding machine, and wherein the longitudinal rod member is mounted to the winding machine.


Documents:

1801-mas-98 abstract.pdf

1801-mas-98 claims.pdf

1801-mas-98 correspondence-others.pdf

1801-mas-98 correspondence-po.pdf

1801-mas-98 description(complete).pdf

1801-mas-98 drawings.pdf

1801-mas-98 form-19.pdf

1801-mas-98 form-2.pdf

1801-mas-98 form-26.pdf

1801-mas-98 form-4.pdf

1801-mas-98 form-6.pdf

1801-mas-98 others.pdf

1801-mas-98 petition.pdf


Patent Number 199081
Indian Patent Application Number 1801/MAS/1998
PG Journal Number 23/2006
Publication Date 09-Jun-2006
Grant Date 01-Mar-2006
Date of Filing 10-Aug-1998
Name of Patentee TAMAGAWA SEIKI KABUSHIKI KAISHA
Applicant Address 1879, OOYASUMI, IIDA-SHI, NAGANO-KEN
Inventors:
# Inventor's Name Inventor's Address
1 TAMAGAWA SEIKI KABUSHIKI KAISHA 1879, OOYASUMI, IIDA-SHI, NAGANO-KEN
PCT International Classification Number H02K3/50
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 9-313586 1997-11-14 Japan