Rear suspension structure for motorcycle
First Claim
1. A rear suspension structure for motorcycle comprising:
- a swing arm having a first end swingably fitted to a pivot shaft provided on a vehicle body side;
a wheel fitted to a second end of said swing arm;
a shock absorber unit having an upper end fitted to said swing arm with a lower end of said shock absorber unit connected to the vehicle body side;
arm portions extending in the front-rear direction are provided on a left side and a right side, respectively, of said swing arm;
a window portion for passing said shock absorber unit therethrough is provided between said arm portions; and
a cross beam is provided between said arm portions, said upper end of said shock absorber unit is fitted to said cross beam, and a whole section of said window portion adjacent to the upper end of said shock absorber is closed with said cross beam.
1 Assignment
0 Petitions
Accused Products
Abstract
A left arm portion and a right arm portion which extend in the front-rear direction are provided on the left and right sides of a swing arm with a window portion for passing a rear shock absorber unit therethrough provided between the left arm portion and the right arm portion. A shock absorber-fitting beam is provided like a bridge between the left arm portion and the right arm portion with a swing arm side fitting portion of the rear shock absorber unit fitted to the shock absorber-fitting beam. A whole part or a part of the window portion is closed with the shock absorber-fitting beam. The swing arm can be reinforced with the shock absorber-fitting beam with the flexural rigidity and torsional rigidity of the swing arm being enhanced. Moreover, since the upper end of the shock absorber unit is fitted to the swing arm side, it is unnecessary to provide, for example, a fitting portion for the upper end of the shock absorber unit on the vehicle body frame side, so that an increase in weight can be restrained.
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Citations
20 Claims
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1. A rear suspension structure for motorcycle comprising:
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a swing arm having a first end swingably fitted to a pivot shaft provided on a vehicle body side;
a wheel fitted to a second end of said swing arm;
a shock absorber unit having an upper end fitted to said swing arm with a lower end of said shock absorber unit connected to the vehicle body side;
arm portions extending in the front-rear direction are provided on a left side and a right side, respectively, of said swing arm;
a window portion for passing said shock absorber unit therethrough is provided between said arm portions; and
a cross beam is provided between said arm portions, said upper end of said shock absorber unit is fitted to said cross beam, and a whole section of said window portion adjacent to the upper end of said shock absorber is closed with said cross beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A rear suspension structure for motorcycle comprising:
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a swing arm having a first end swingably fitted to a pivot shaft provided on a vehicle body side;
a wheel fitted to a second end of said swing arm;
a shock absorber unit having an upper end fitted to said swing arm with a lower end of said shock absorber unit connected to the vehicle body side;
arm portions extending in the front-rear direction are provided on a left side, and a right side, respectively, of said swing arm;
a window portion for passing said shock absorber unit therethrough is provided between said arm portions; and
a cross beam is provided between said arm portions, said upper end of said shock absorber unit is fitted to said cross beam, and a part of said window portion adjacent to the upper end of said shock absorber is closed with said cross beam. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification