FRONT SUSPENSION SYSTEM FOR ELECTRIC WHEELCHAIR

Japanese Patent JP2016043919

A

PROBLEM TO BE SOLVED: To provide a front suspension system for an electric wheelchair.SOLUTION: One end of a front wheel frame 50 is pivotally coupled to a front pivot shaft 40 of a frame, the other end thereof is coupled to a front wheel 21. Arranging a front shock absorber 70 on a horizontal first section 52 of the front wheel frame 50 can improve upward pivoting capability of the front wheel frame 50, which consequently improves the climbing capability of the front wheels by a raised bearing surface G. One end of an elasticity resistance member 60 bored in the front pivot shaft 40 is coupled to interlock with the front wheel frame 50, and the other end thereof is abutted on an abutting member 25 of the frame. When the front wheels 21 encounter the bearing surface G and makes the front wheel frame 50 pivot simultaneously, the elasticity resistance member 60 is compressed to produce a reaction force toward the front wheel frame 50. Thereby, the resistance force is generated in the opposite direction when the front wheels 21 are swung on a road surface to prevent the entire frame from excessively tipping and tipping forward.SELECTED DRAWING: Figure 8

WO/2023/130240	IN-WHEEL ELECTRIC MOTOR DRIVING SYSTEM, AND MOTOR VEHICLE
WO/1990/009900	TRAILER SUSPENSION APPARATUS
WO/2019/084649	STRUCTURAL ARRANGEMENT FOR A PNEUMATIC SUSPENSION ARM BUSHING

WU PIHSIANG

JP2015152559A

April 04, 2016

July 31, 2015

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ENERGY CONTROL LTD

B60G3/12; A61G5/04

JPS4849132A	1973-07-11
JPH0419207A	1992-01-23
JPS6018068U	1985-02-07
JP2007061342A	2007-03-15
JP2010536512A	2010-12-02

US20110253464A1	2011-10-20
US6129165A	2000-10-10
US20020024192A1	2002-02-28

Sakuo Yamaguchi

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