Four-wheel independent suspension system for an electric wheelchair
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B60G-011/18
B60G-011/20
B60G-003/12
A61G-005/04
B60G-011/24
A61G-005/10
출원번호
US-0249797
(2014-04-10)
등록번호
US-9039018
(2015-05-26)
발명자
/ 주소
Lin, Chung-Chuan
출원인 / 주소
Lin, Chung-Chuan
대리인 / 주소
Patent Office of Bang Shia
인용정보
피인용 횟수 :
2인용 특허 :
10
초록▼
A four-wheel independent suspension system for an electric wheelchair includes a chassis, two front wheels each fixed to a front rod respectively, and two rear wheels each fixed to a rear rod respectively. The chassis includes a rail extending in a width direction of the chassis, each of the front a
A four-wheel independent suspension system for an electric wheelchair includes a chassis, two front wheels each fixed to a front rod respectively, and two rear wheels each fixed to a rear rod respectively. The chassis includes a rail extending in a width direction of the chassis, each of the front and rear rods has one end connected to a square first connecting sleeve, in the first connecting sleeve is disposed a first shock absorber which includes a rectangular outer pipe, and a rectangular inner pipe disposed in and rotated degrees with respect to the outer pipe, the edges of the inner pipe are abutted against the inner surface of the outer pipe, between each of the edges of the inner pipe and the inner space of the outer pipe is disposed an elastic rubber, the inner pipe of each of the first shock absorbers is sleeved on the rail.
대표청구항▼
1. A four-wheel independent suspension system for an electric wheelchair comprising: a chassis, two front wheels each fixed to a front rod respectively, and two rear wheels each fixed to a rear rod respectively; the four-wheel independent suspension system being characterized in that: the chassis is
1. A four-wheel independent suspension system for an electric wheelchair comprising: a chassis, two front wheels each fixed to a front rod respectively, and two rear wheels each fixed to a rear rod respectively; the four-wheel independent suspension system being characterized in that: the chassis is provided with a rail extending in a width direction of the chassis, each of the front rods and rear rods has one end connected to a first connecting sleeve which is square-shaped in cross section, in each of the first connecting sleeves is disposed a first shock absorber which includes a rectangular outer pipe, and a rectangular inner pipe disposed in and rotated degrees with respect to the outer pipe, so that edges of the inner pipe are abutted against the inner surface of the outer pipe, between each of the edges of the inner pipe and the inner space of the outer pipe is disposed an elastic rubber, the inner pipe of each of the first shock absorbers is sleeved on the rail, so that the front and rear wheels are independently suspended from the chassis via the connecting sleeves and the first shock absorbers. 2. The four-wheel independent suspension system for the electric wheelchair as claimed in claim 1, wherein each of the first connecting sleeves includes a U-shaped frame and bolts, the U-shaped frame is sleeved on a corresponding one of the first shock absorbers and then fixed by the bolts and nuts. 3. The four-wheel independent suspension system for the electric wheelchair as claimed in claim 2, wherein the front rods are connected to the first shock absorbers that are disposed in the first connecting sleeves that are connected to the front rods and extend outward and forward in an inclined manner, and the rear rods are connected to the first shock absorbers that are disposed in the first connecting sleeves that are connected to the rear rods and extend downward and backward in an inclined manner. 4. The four-wheel independent suspension system for the electric wheelchair as claimed in claim 3 further comprising a safety rod, at a rear end of the chassis is disposed a hollow pipe which extends downward and backward, the hollow pipe has a top close end, inside the hollow pipe is disposed an elastic member, the safety rod is partially inserted in the hollow pipe and abutted against the elastic member. 5. The four-wheel independent suspension system for the electric wheelchair as claimed in claim 4, wherein the hollow pipe is provided with two aligned slots in two opposite sides thereof, the safety rod is provided with an engaging protrusion on each of two opposite sides, and the engaging protrusions are engaged in the slots. 6. The four-wheel independent suspension system for the electric wheelchair as claimed in claim 4, wherein the elastic members are springs. 7. The four-wheel independent suspension system for the electric wheelchair as claimed in claim 4, wherein the safety rod is provided at a lower end thereof with two first wheels which are located at two sides of the safety rod. 8. The four-wheel independent suspension system for the electric wheelchair as claimed in claim 3, wherein a second connecting sleeve is disposed at the rear end of the chassis, and in the second connecting sleeve is disposed a second shock absorber which is structurally the same as the first shock absorber, at two ends of an inner pipe of the second shock absorber are sleeved two suspension arms, and at lower ends of the suspension arms is fixed a second wheel. 9. The four-wheel independent suspension system for the electric wheelchair as claimed in claim 1, wherein the front rods are connected to the first shock absorbers that are disposed in the first connecting sleeves that are connected to the front rods and extend outward and forward in an inclined manner, and the rear rods are connected to the first shock absorbers that are disposed in the first connecting sleeves that are connected to the rear rods and extend downward and backward in an inclined manner. 10. The four-wheel independent suspension system for the electric wheelchair as claimed in claim 9 further comprising a safety rod, at a rear end of the chassis is disposed a hollow pipe which extends downward and backward, the hollow pipe has a top close end, inside the hollow pipe is disposed an elastic member, the safety rod is partially inserted in the hollow pipe and abutted against the elastic member. 11. The four-wheel independent suspension system for the electric wheelchair as claimed in claim 10, wherein the hollow pipe is provided with two aligned slots in two opposite sides thereof, the safety rod is provided with an engaging protrusion on each of two opposite sides, and the engaging protrusions are engaged in the slots. 12. The four-wheel independent suspension system for the electric wheelchair as claimed in claim 10, wherein the elastic members are springs. 13. The four-wheel independent suspension system for the electric wheelchair as claimed in claim 10, wherein the safety rod is provided at a lower end thereof with two first wheels which are located at two sides of the safety rod. 14. The four-wheel independent suspension system for the electric wheelchair as claimed in claim 9, wherein a second connecting sleeve is disposed at the rear end of the chassis, and in the second connecting sleeve is disposed a second shock absorber which is structurally the same as the first shock absorber, at two ends of an inner pipe of the second shock absorber are sleeved two suspension arms, and at lower ends of the suspension arms is fixed a second wheel.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (10)
Nance, John D., Compression and torsion damping wheel suspension system.
Vereen, III, Royal Leo; Nearburg, Mark Kleber; Cobb, Price Daniels; Mitchum, Thomas Allan, Wheelchair with four wheel independent suspension and modular seating.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.