|Title of Invention||
A SWING ARM AND AXLE CASING ASSEMBLY FOR TWO WHEELERS
|Abstract||Disclosed herein a swing arm and axle casing assembly for two wheelers especially motor cycles which consists of a swing arm having a curved beam which is connected to the axle casing assembly placed in the rear wheel of the two wheeler.|
This is invention to a swing arm and axle casing assembly
for two wheelers- especially motor cycles which provides the easy removal of the wheel by removal of just one single nut.
One of the unexpected repairs that can happen to a vehicle is a puncture and especially the puncture of the rear tire requires knowledge and skill to remove and reassemble the wheel and other related components namely the brake arrangement, maintaining the chain tension and wheel alignment.
In the present invention only one shock absorber is used. Since there are two dampers in the existing vehicle, it was important to know the load borne by the prevailing dampers so as to determine the spring requirements for the mono shock absorber used in the present invention.
In order to determine the shaft diameter as the shaft is
subjected to shear load and also bending loads (which are
negligible), shear tests on shaft materials have been carried out
to reveal the maximum shear stress the shaft would have to
a, Prevailing axle material shaft diameter — 15 mm For single shear, fracture load = B=7 tons-For double shear, fracture 1oad = 19=1 tons.
b. C45 steel shaft of diameter = 12 mm For single shear, fracture load = 6.8 tons. For double shear, fracture load = 14,2 tone C45 steel shaft surface hardened to 1 mm depth and diameter 12 mm.
For single shear, fracture load — 9=5 tons. For double shear, fracture 1 oad = 21.4 tonB» Ultimate Tensile Strength = 666,3 HPa.
It is known that the maximum tension of the chain is the maximum load on the swing arm parallel to the axis of the wheel , considering the chain as the element stranger than the arm, the arm designed should be able to withstand this load without undergoing deformation or failure- The failure of the chain in tension would be the compressive load that will act on the arm. This will be used to determine the cross—section of the arm.
Snap of the chain i n tension: Trial 1 - 1=7 tons= Trial 2 = 1=8 tons. Trial 3 = 1 = 6 t on s,
Average value of the three tri als = 1 = 6 tons.
= 1.6 * l=25(fcs) = 2 tons.
The pedal movement is connected into proportional brake can movement which operates the brake shoes, Further, the exhaust pipe connection could also be placed in the left side= In conventional assembly, the shaft in the hub is stationery and the wheel movement is through the chain and the sprocket which directly drived the hub.
In the present invention, the sprocket and chain movement is transmitted to the rotating shaft through the sprocket drive plate and from the shaft the drive is transmitted to the hub through the hub drive plate.
1. A swing arm and axle casing assembly for two wheelers especially motor cycles which consists of a swing arm having a beam which is connected to the axle casing assembly placed in the rear wheel of the two wheeler, the axle casing comprising of a sprocket drive plate which is placed to the left
side of the shaft and hub, the other end of the shaft being provided with a hub drive plate followed by a nut arrangement to keep the assembly secure.
2= A swing arm and axle casing assembly as claimed in claim 1,
wherein the brake assembly is placed on the left side and the
brake pedal movement is transmitted to the brake lever rod
through suitable 1everages.
3, A swing arm and axle casing assembly as claimed in claims 1 or
2, wherein only one shock absorber is provided.
4, A swing arm and axle casing assembly as claimed in any one of
claims 1 to 3, wherein the exhaust pipe is placed on the left
side of the vehicle.
5, A swing arm and axle casing assembly for two wheelers
especially motor cycles substantial1y as hereinbefore described
and illustrated in the accompanying drawings =
|Indian Patent Application Number||2307/MAS/1997|
|PG Journal Number||26/2007|
|Date of Filing||16-Oct-1997|
|Name of Patentee||SYED MUBASHEER ALI|
|Applicant Address||NO. 710/3, ANKANNA REDDY LAYOUT, BANASWADI, BANGALORE|
|PCT International Classification Number||B62K25/00|
|PCT International Application Number||N/A|
|PCT International Filing date|