IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0477529
(2002-05-17)
|
우선권정보 |
JP-0151449 (2001-05-21) |
국제출원번호 |
PCT/JP02/04802
(2002-05-17)
|
국제공개번호 |
WO02/09464
(2002-11-28)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Avantec Corporation, K Design Co., Ltd.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
51 인용 특허 :
6 |
초록
▼
In a tricycle in which left and right front forks ( 30 L, 30 R) for rotatably supporting left and right front wheels (WFL, WFR) respectively are disposed on laterally opposite sides of a handle post ( 21 ) to extend upwards and downwards and are turnably carried on left and right side posts ( 29 L,
In a tricycle in which left and right front forks ( 30 L, 30 R) for rotatably supporting left and right front wheels (WFL, WFR) respectively are disposed on laterally opposite sides of a handle post ( 21 ) to extend upwards and downwards and are turnably carried on left and right side posts ( 29 L, 29 R) supported on the handle post ( 21 ), and an upper link ( 35 U) connected at its opposite ends to the left and right side posts ( 29 L, 29 R) and a lower link ( 35 D) connected at its opposite ends to the left and right side posts ( 29 L, 29 R) are turnably connected at their central portions to the handle post ( 21 ), the left and right side posts ( 29 L, 29 R) are disposed in an inclined state, so that the distance between both of the side posts ( 29 L, 29 R) is decreased toward their upper portions. Thus, the tricycle can be braced sufficiently by inner one of the front wheels during bank-traveling thereof.
대표청구항
▼
1. A tricycle in which a steering shaft ( 27 ) leading to a steering handlebar ( 28 ) is turnably carried on a handle post ( 21 ) provided at a front end of a vehicle body frame assembly (F); left and right front forks ( 30 L, 30 R) for rotatably supporting left and right front wheels (WFL, WFR) res
1. A tricycle in which a steering shaft ( 27 ) leading to a steering handlebar ( 28 ) is turnably carried on a handle post ( 21 ) provided at a front end of a vehicle body frame assembly (F); left and right front forks ( 30 L, 30 R) for rotatably supporting left and right front wheels (WFL, WFR) respectively are disposed on laterally opposite sides of said handle post ( 21 ) to extend upwards and downwards and are turnably carried on left and right side posts ( 29 L, 29 R) supported on said handle post ( 21 ); said steering shaft ( 27 ) is connected to said front forks ( 30 L, 30 R) to enable the steering of said front wheels (WFL, WFR) in response to the turning operation of said steering shaft ( 27 ); an upper link ( 35 U) connected at opposite ends thereof to the left and right side posts ( 29 L, 29 R) and a lower link ( 35 D) disposed below the upper link ( 35 U) and connected at opposite ends thereof to the left and right side posts ( 29 L, 29 R) are turnably connected at central portions thereof to said handle post ( 21 ); and a driven wheel (WR) is supported at a rear portion of the vehicle body frame assembly (F), characterized in that said left and right side posts ( 29 L, 29 R) are disposed in an inclined state so that the distance between both of said side posts ( 29 L, 29 R) is decreased toward upper portions thereof, and the lengths of said upper and lower links ( 35 U, 35 D) are set to be equal to each other, and an amount of protrusion, from the left and right side posts ( 29 L, 29 R), of lower brackets ( 40 L, 40 R) secured to the left and right side posts ( 29 L, 29 R) in order to connect the opposite ends of the lower link ( 35 D) is set to be larger than an amount of protrusion, from the left and right side posts ( 29 L, 29 R), of upper brackets ( 39 L, 39 R) secured to the left and right side posts ( 29 L, 29 R) in order to connect the opposite ends of the upper link ( 35 U). 2. A tricycle according to claim 1, wherein an upright attitude-maintaining means ( 48 A, 48 B) for exhibiting a spring force for biasing said handle post ( 21 ) to the upright attitude thereof by the either leftward or rightward tilting of said handle post ( 21 ) is provided between one of said upper and lower links ( 35 U, 35 D) and said handle post ( 21 ) on either one of the left or right of said handle post ( 21 ).
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