Structure of a rear swingarm for a vehicle with saddle seat
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsHideo Yanai, Shinichi Yamada
Life of this patent
Estimating the term…
Abstract
A rear swingarm is made by casting an aluminum alloy having a front cross member with pivots at a front end thereof, a rear cross member having axle holders at the rear end thereof, and a pair of hollow arms connecting the front and rear cross members along the length of a buggy. The rear swingarm has an opening for cut-away excess metal, which is in the shape of an egg when viewed from above. A front wall, an inner wall and a rear wall, constituting the opening, are rounded with curvatures R1, R2 and R3, respectively. The inner wall is uniformly rounded with the curvature R2. A width of the arms is gradually increased from the front end thereof toward the rear end of the buggy.
Claims16
A vehicle rear swingarm, comprising:
- a right arm member having a front end and a rear end;
- a left arm member having a front end and a rear end;
- a front cross member having a first end and a second end, said first end abutting said right arm member at said front end thereof and said second end abutting said left arm member at said front end thereof;
- a rear cross member having a first end and a second end, said first end abutting said right arm member at said rear end thereof and said second end abutting said left arm member at said rear end thereof;
- an opening being formed between said front and rear members and said right and left arm members, said opening having a width where said front member abuts said right and left arm members greater than a width where said rear member and said right and left arm members abut,
- wherein right and left sides of said opening are constituted by inner walls of said right and left arm members, said inner walls being uniformly rounded along at least a length portion thereof.
Dependencies are inferred from the claim text.