Small-sized saddle riding vehicle, and rigidity adjustment device of body frame of vehicle

Patent metadata

Field	Value
Publication number	US-2018346057-A1
Application number	US-201815980867-A
Country	US
Kind code	A1
Filing date	May 16, 2018
Priority date	May 31, 2017
Publication date	Dec 6, 2018
Grant date	—

Abstract

In a rocking vehicle, a front wheel suspension device suspends a front wheel in an upwardly displaceable manner due to a reaction force from a road surface. The rocking vehicle includes a cushion support arm, on a body frame side, including a cushion support portion of the front wheel suspension device, and a rigidity adjustment device which is extended between plural portions of the cushion support arm. The rigidity adjustment device applies a pre-tension to the cushion support arm, and the pre-tension generates a pre-force component in the cushion support portion in the same direction as the upward moving direction of the front wheel due to a reaction force of the front wheel from the road surface.

First claim

1 . A small-sized saddle riding vehicle comprising a body frame and a suspension device which connects the body frame and a wheel to each other, in which the suspension device suspends the wheel in a displaceable manner in an upward direction due to a reaction force from a road surface,
wherein the small-sized saddle riding vehicle further comprises a rigid member, on the body frame side, having a support portion of the suspension device, and a rigidity adjustment device which is extended between a plural portions of the rigid member, the rigidity adjustment device applies a pre-tension to the rigid member, and the pre-tension is set to generate a pre-force component to the support portion in the same direction as an upward moving direction of the wheel due to a reaction force of the wheel from the road surface.

2 . The small-sized saddle riding vehicle according to claim 1 ,
wherein the rigid member includes at least two lug portions which are connected in different extending directions, the rigidity adjustment device forms a triangular shape together with the rigid member by being extended between the two lug portions, and applies a pre-tension between the two lug portions, and the pre-tension is set to generate a pre-force component at the support portion in the same direction as the upward moving direction of the wheel due to a reaction force of the wheel from the road surface.

3 . The small-sized saddle riding vehicle according to claim 1 ,
wherein the rigidity adjustment device possesses both a tension generation function and a vibration attenuation function.

4 . The small-sized saddle riding vehicle according to claim 3 ,
wherein the rigidity adjustment device provides generation of a tension and attenuation of vibration by a rubber member.

5 . The small-sized saddle riding vehicle according to claim 2 ,
wherein the suspension device includes a cushion unit, and a mounting portion of the cushion unit on the body frame side is formed on one of the two lug portions.

6 . The small-sized saddle riding vehicle according to claim 5 ,
wherein the small-sized saddle riding vehicle is a rocking vehicle, the rigid member is connected to the body frame by way of a rocking shaft, the rigid member includes a support portion for the cushion unit on the body frame side, a mounting portion of the cushion unit and one mounting portion of the rigidity adjustment device are provided to one lug portion of the rigid member, and the other mounting portion of the rigidity adjustment device is provided to the other lug portion of the rigid member.

7 . The small-sized saddle riding vehicle according to claim 2 ,
wherein the two lug portions form a part of the body frame, the suspension device is supported by a connecting portion of the two lug portions, and by applying a pre-tension to the two lug portions, a pre-force is generated on the suspension device in the same direction as the upward moving direction of the wheel due to a reaction force of the wheel from the road surface.

8 . The small-sized saddle riding vehicle according to claim 1 ,
wherein the saddle riding vehicle comprises a plurality of the rigidity adjustment devices, and the rigidity adjustment devices include the first rigidity adjustment device which generates a pre-force component of the support portion in the same direction as an upward moving direction of the wheel due to a reaction force of the wheel from a road surface and the second rigidity adjustment device which generates a pre-force component of the support portion in the same direction as a downward moving direction of the wheel due to a reaction force of the wheel from the road surface.

9 . The small-sized saddle riding vehicle according to claim 8 , wherein a pre-tension of the first rigidity adjustment device and a pre-tension of the second rigidity adjustment device are made different from each other.

10 . A rigidity adjustment device of a body frame of a small-sized vehicle,
wherein the small-sized vehicle includes a suspension device which connects the body frame and a wheel to each other, and a pre-tension is applied to a mounting portion of the suspension device of the small-sized vehicle, the rigidity adjustment device includes: a cylinder; a rod which penetrates one end portion of the cylinder and extends from an inside of the cylinder to an outside of the cylinder; and a plate-like member which is provided to one-end portion of the rod in the inside of the cylinder and is movable in the inside of the cylinder integrally with the rod, and an elastic member is disposed between the plate-like member and one end portion of the cylinder, a mounting portion to the body frame side is provided to the other end portion of the rod and the other end portion of the cylinder, and a tension adjustment mechanism is provided to the rod and the cylinder, or on either one of the rod or the cylinder.

11 . The rigidity adjustment device of the body frame of the vehicle according to claim 10 ,
wherein the elastic member is a rubber member.

Assignees

• Honda Motor Co Ltd

Inventors

• Mukai Katsumasa
• Kubo Satoru
• Yoshino Hiroki
• Takahashi Hirohisa
• Yamagishi Kazuki
• Sasaki Ryuji
• Sakai Kiyotaka

Classifications

• F16F1/44

  loaded mainly in compression · CPC title

• B60G2204/4108

  Resilient element being enclosed and or pres-tressed in a solid container · CPC title

• B60G2300/122

  Trikes · CPC title

• B62K19/04

  the material being wholly or mainly metallic, e.g. of high elasticity · CPC title

• B62K2005/001

  Suspension details for cycles with three or more main road wheels · CPC title