WO2014146580A1 - Three-wheel scooter - Google Patents

Three-wheel scooter Download PDF

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Publication number
WO2014146580A1
WO2014146580A1 PCT/CN2014/073720 CN2014073720W WO2014146580A1 WO 2014146580 A1 WO2014146580 A1 WO 2014146580A1 CN 2014073720 W CN2014073720 W CN 2014073720W WO 2014146580 A1 WO2014146580 A1 WO 2014146580A1
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WO
WIPO (PCT)
Prior art keywords
front wheel
wheel bracket
threaded shaft
double
torsion spring
Prior art date
Application number
PCT/CN2014/073720
Other languages
French (fr)
Chinese (zh)
Inventor
龚丹
Original Assignee
Gong Dan
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Filing date
Publication date
Application filed by Gong Dan filed Critical Gong Dan
Publication of WO2014146580A1 publication Critical patent/WO2014146580A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K3/00—Bicycles
    • B62K3/002—Bicycles without a seat, i.e. the rider operating the vehicle in a standing position, e.g. non-motorized scooters; non-motorized scooters with skis or runners

Definitions

  • the utility model relates to a sports equipment, in particular to a three-wheeled scooter. Background technique
  • a common three-wheeled scooter includes two front wheels, and a front wheel bracket set between the two front wheels; the front wheel bracket set includes a front wheel bracket connecting the two front wheels, and the center hole of the front wheel bracket A bearing is arranged below, and a double-threaded shaft is arranged in the bearing.
  • the double-threaded shaft locks a limit sleeve and a front portion of the pedal on the front wheel bracket through a nut, and the top of the double-threaded shaft passes through the pedal
  • the handle is connected with a hand, and the top of the handle tube is provided with a handle; the front wheel bracket is provided with a limit block, and the limit sleeve is provided with a limit groove; the rear part of the foot pedal is provided with a rear wheel and a brake plate.
  • the handles are tilted left and right by the handlebars in turn, and due to the inclination angle of the double crepe shaft, the front wheel bracket and the foot pedal, the gravity shift generates a centripetal force, so that the front wheel bracket Swinging left and right, the control of the direction of travel of the vehicle is realized under the action of the moment; the brake pedal can be braked on the scooter; the limit block and the limit slot jointly limit the swing amplitude of the front wheel within the set range.
  • the three-wheeled scooter does not automatically return to its front wheel bracket in its natural state. Even if it is manually aligned, it cannot be maintained, and its storage stability and convenience are poor.
  • Utility model content
  • the utility model aims to provide a three-wheeled scooter with automatic returning.
  • a three-wheeled scooter includes two front wheels and one foot pedal, and a front wheel bracket is disposed between the two front wheels.
  • a bearing is disposed on the upper and lower sides of the center hole of the front wheel bracket, and a double threaded shaft is disposed in the bearing, and the double threaded shaft locks a limit sleeve and a front portion of the foot pedal to the front wheel bracket through two nuts
  • the top of the double-threaded shaft is connected to a handle tube through a foot pedal, the top of the handle tube is provided with a handle; the rear portion of the foot pedal is provided with a rear wheel; the front wheel bracket and the limit position
  • a torsion spring is disposed between the sleeves, and the torsion spring is sleeved on the double-threaded shaft, and the two ends are respectively connected to the front wheel bracket and the limiting sleeve.
  • the torsion spring fixes an initial angle of the axis of the front wheel bracket to be parallel to the axis of the rear wheel.
  • the torsion spring may be a stack of two identical springs.
  • the center hole of the front wheel bracket is provided with a rotation limiting boss, and the limiting sleeve is provided with a corresponding rotation limiting slot, and the rotation limiting boss is inserted. Connected to the rotation limit slot.
  • the limiting sleeve is fixed to the pedal by the bayonet, the front wheel bracket is rotated about the double threaded shaft, and the rotation limiting boss is in the rotation limiting slot. Rotation, the range of rotation is ⁇ 25 °, a total of 50 °.
  • the utility model has the beneficial effects that: since a torsion spring is arranged between the front wheel bracket and the limit sleeve, the torsion spring sets the initial angle of the shaft line of the front wheel bracket to be the axial line of the rear wheel. Parallel, under the force of the torsion spring, regardless of the angle of the front wheel bracket of the scooter to any angle within the limited range, once the person leaves the pedal and the scooter is in a natural state, the front wheel bracket will automatically Correction: Returning to its initial angle, this improves the stability of the scooter in its natural state and makes it easier to store. DRAWINGS
  • 1 is a schematic view of the overall structure of an embodiment of the present invention
  • 2 is a partial structural schematic view of an embodiment of the present invention
  • Figure 3 is a partial exploded view of the embodiment of the present invention
  • Figure 4 is a partial longitudinal cross-sectional view of an embodiment of the present invention
  • Figure 5 is a bottom view of the limit sleeve of the embodiment of the present invention.
  • the figures are marked as: 1, left front wheel, 2, right front wheel, 3, foot pedal, 4, front wheel bracket, 4a, front wheel bracket center hole, 4b, first spring insertion hole, 4c, rotation limit Position boss, 5, upper bearing, 6, lower bearing, 7, double threaded shaft, 8, upper nut, 9, lower nut, 10, limit sleeve, 10a, second spring insertion hole, 10b, rotation limit Slot, 11, handlebar, 12, handlebar, 13, rear wheel, 14, torsion spring.
  • a three-wheeled scooter includes a left and right front wheel 1, 2 and a foot pedal 3, a front wheel bracket 4 between the left and right front wheels 1, 2, and a center hole 4a of the front wheel bracket 4
  • the upper and lower bearings 5, 6 are provided below, and the upper and lower bearings 5, 6 are provided with a double threaded shaft 7, which has a limit sleeve 10 and a foot pedal through the upper and lower nuts 8, 9.
  • the front portion of the 3 is locked to the front wheel bracket 4;
  • the top of the double threaded shaft 7 is connected to the foot pedal 3,
  • the foot pedal 3 is connected to a hand tube 11, and the handle tube 11 is provided with a handle 12 at the top;
  • a rear wheel 13 is provided at the rear of the pedal 3.
  • a torsion spring 14 is disposed between the front wheel bracket 4 and the limit sleeve 10, and the torsion spring 14 is sleeved on the double threaded shaft 7, and the ends of the torsion spring 14 are respectively located directly in front of and behind the double threaded shaft 7.
  • a first spring insertion hole 4b is disposed around the center hole 4a of the front wheel bracket, and a second spring insertion hole 10a is disposed at a corresponding position in the limiting sleeve 10, and the first and second insertion holes 4b, 10a are also respectively located in the double Directly forward and rearward of the threaded shaft 7.
  • the periphery of the front wheel bracket central hole 4a is provided with a rotation limiting boss 4c.
  • the limiting sleeve 10 is correspondingly provided with a rotation limiting slot 10b, and the rotation limiting boss 4c is inserted into the rotation limiting slot 10b.
  • the limit sleeve is fixed to the foot pedal 3 through the bayonet, and the front wheel bracket 4 is rotatable about the double threaded shaft 7.
  • the rotation limit boss 4c can be rotated in the rotation limit slot 10b, and the rotation range is ⁇ 25 °, total 50°.
  • the working principle of the utility model is as follows: when driving the scooter, the pedals 3 are tilted by the left and right swinging handles 12, and the front wheel brackets are driven by the inclination of the installation under the action of gravity eccentricity, and the front wheel bracket 4 is rotated. 4 driving the left and right front wheels 1, 2 steering; at this time, the torsion force of the torsion spring 14 is less than the force applied by the person on the pedal 3 and the handlebar 12, and the left and right front wheels 1, 2 can smoothly rotate in the limit Steering is achieved within the range defined by the position boss 4c and the rotation limit slot 10b.
  • the torsion of the torsion spring 14 drives the front wheel bracket 4 back to its initial angle by the double threaded shaft 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Abstract

A three-wheel scooter, provided with a front wheel support member (4) between the two front wheels; bearings (5, 6) are disposed respectively above and below the central hole of the front wheel support member (4); the bearings (5, 6) are provided with a double-threaded shaft (7) therein; the double-threaded shaft (7) uses two nuts (8, 9) to lock a stop collar (10) and the front portion of a pedal (3) to the front wheel support member (4); the top of the double-threaded shaft (7) is connected to a handle tube (11) via the pedal (3), and the top of the handle tube (11) is provided with a handlebar (12); behind the pedal (3) is provided a rear wheel (13); a torsion spring (14) is provided between the front wheel support member (4) and the stop collar (10), and is sleeved on the double-threaded shaft (7), with the two ends of the torsion spring (14) being respectively connected to the front wheel support member (4) and the stop collar (10); the torsion spring (14) sets the initial angle of the axle line of the front wheel support member (4) to be parallel to the axle line of the rear wheel (13); a rotary stopping boss (4c) is provided around the central hole of the front wheel support member (4); a corresponding rotary stop recess (10b) is provided in the stop collar (10); and the rotary stop boss (4c) is inserted into the rotary stop recess (10b). The three-wheel scooter provides automatic steering return, and has good storage stability and convenience.

Description

三轮滑板车 技术领域  Three-wheeled scooter
本实用新型涉及一种运动器材， 尤其涉及一种三轮滑板车。 背景技术  The utility model relates to a sports equipment, in particular to a three-wheeled scooter. Background technique
目前， 一种常见的三轮滑板车， 包括两前轮， 两前轮之间设有一前轮支架 组； 前轮支架组包括连接两前轮的一前轮支架， 前轮支架的中心孔上、 下方各 设有一轴承， 轴承内设有双螺纹轴， 双螺纹轴通过螺母将一限位套和一脚踏板 的前部锁紧在前轮支架上， 双螺纹轴的顶部通过脚踏板与一手把管连接， 手把 管的顶部设有一手把； 前轮支架上设有限位块， 限位套内设有限位槽； 脚踏板 的后部设有一后轮和一刹车板。  At present, a common three-wheeled scooter includes two front wheels, and a front wheel bracket set between the two front wheels; the front wheel bracket set includes a front wheel bracket connecting the two front wheels, and the center hole of the front wheel bracket A bearing is arranged below, and a double-threaded shaft is arranged in the bearing. The double-threaded shaft locks a limit sleeve and a front portion of the pedal on the front wheel bracket through a nut, and the top of the double-threaded shaft passes through the pedal The handle is connected with a hand, and the top of the handle tube is provided with a handle; the front wheel bracket is provided with a limit block, and the limit sleeve is provided with a limit groove; the rear part of the foot pedal is provided with a rear wheel and a brake plate.
左右摆动滑板车手把， 手把依次通过手把管使脚踏板左右恻倾、 由于双螓 纹轴、 前轮支架与脚踏板存在一定的倾角， 重力偏移产生一向心力， 使前轮支 架左右摆动， 在力矩作用下实现对车行进方向的控制； 踩踏刹车板可以对滑板 车制动； 限位块和限位槽共同将前轮的摆动幅度限制在设定的范围内。  Swinging the scooter handles left and right, the handles are tilted left and right by the handlebars in turn, and due to the inclination angle of the double crepe shaft, the front wheel bracket and the foot pedal, the gravity shift generates a centripetal force, so that the front wheel bracket Swinging left and right, the control of the direction of travel of the vehicle is realized under the action of the moment; the brake pedal can be braked on the scooter; the limit block and the limit slot jointly limit the swing amplitude of the front wheel within the set range.
但该类三轮滑板车在自然状态下其前轮支架无法自动回正， 即使通过手动 将其摆正， 也无法保持， 其存放的稳定性和便利性较差。 实用新型内容  However, the three-wheeled scooter does not automatically return to its front wheel bracket in its natural state. Even if it is manually aligned, it cannot be maintained, and its storage stability and convenience are poor. Utility model content
本实用新型旨在提供一种自动回正的三轮滑板车。  The utility model aims to provide a three-wheeled scooter with automatic returning.
本实用新型所采取的技术方案如下：  The technical solutions adopted by the utility model are as follows:
一种三轮滑板车， 包括两前轮和一脚踏板， 两前轮之间设有一前轮支架， 该前轮支架的中心孔上、 下方各设有一轴承， 轴承内设有一双螺纹轴， 该双螺 纹轴通过两螺母将一限位套及所述脚踏板的前部锁紧在前轮支架上； 所述双螺 纹轴的顶部通过脚踏板与一手把管连接， 手把管的顶部设有一手把； 所述脚踏 板的后部设有一后轮； 所述前轮支架和限位套之间设有一扭力弹簧， 该扭力弹 簧套接于所述双螺纹轴， 其两头分别与所述前轮支架和限位套连接。 A three-wheeled scooter includes two front wheels and one foot pedal, and a front wheel bracket is disposed between the two front wheels. A bearing is disposed on the upper and lower sides of the center hole of the front wheel bracket, and a double threaded shaft is disposed in the bearing, and the double threaded shaft locks a limit sleeve and a front portion of the foot pedal to the front wheel bracket through two nuts The top of the double-threaded shaft is connected to a handle tube through a foot pedal, the top of the handle tube is provided with a handle; the rear portion of the foot pedal is provided with a rear wheel; the front wheel bracket and the limit position A torsion spring is disposed between the sleeves, and the torsion spring is sleeved on the double-threaded shaft, and the two ends are respectively connected to the front wheel bracket and the limiting sleeve.
更进一步， 所述扭力弹簧将所述前轮支架的轴心线的初始角度固定为与所 述后轮的轴心线相平行。  Further, the torsion spring fixes an initial angle of the axis of the front wheel bracket to be parallel to the axis of the rear wheel.
更进一步， 所述扭力弹簧可以是两条相同的弹簧相叠。  Furthermore, the torsion spring may be a stack of two identical springs.
为了防止扭力弹簧过度扭曲产生永久变形， 所述前轮支架的中心孔周边设 有转动限位凸台， 所述限位套内设有对应的转动限位槽， 所述转动限位凸台插 接在所述转动限位槽内。  In order to prevent the torsion spring from being excessively twisted and permanently deformed, the center hole of the front wheel bracket is provided with a rotation limiting boss, and the limiting sleeve is provided with a corresponding rotation limiting slot, and the rotation limiting boss is inserted. Connected to the rotation limit slot.
更进一步， 所述限位套通过卡口固定于所述脚踏板不能转动， 所述前轮支 架绕所述双螺纹轴转动， 所述转动限位凸台在所述转动限位槽内的转动， 转动 幅度为 ±25 ° 、 总共 50° 。  Further, the limiting sleeve is fixed to the pedal by the bayonet, the front wheel bracket is rotated about the double threaded shaft, and the rotation limiting boss is in the rotation limiting slot. Rotation, the range of rotation is ±25 °, a total of 50 °.
本实用新型的有益效果是： 由于在前轮支架和限位套之间设置了一扭力弹 簧， 该扭力弹簧将前轮支架的轴心线的初始角度设定为与后轮的轴心线相平行， 在该扭力弹簧的回力作用下， 无论通过滑板车的手把将前轮支架转到限定范围 内的任何角度， 一旦人离开脚踏板， 让滑板车处于自然状态， 前轮支架都会自 动回正： 既回到其初始角度， 这样就提高了滑板车在自然状态下的稳定性， 更 便于存放。 附图说明  The utility model has the beneficial effects that: since a torsion spring is arranged between the front wheel bracket and the limit sleeve, the torsion spring sets the initial angle of the shaft line of the front wheel bracket to be the axial line of the rear wheel. Parallel, under the force of the torsion spring, regardless of the angle of the front wheel bracket of the scooter to any angle within the limited range, once the person leaves the pedal and the scooter is in a natural state, the front wheel bracket will automatically Correction: Returning to its initial angle, this improves the stability of the scooter in its natural state and makes it easier to store. DRAWINGS
图 1为本实用新型实施例的整体结构示意图 图 2为本实用新型实施例的局部结构示意图 1 is a schematic view of the overall structure of an embodiment of the present invention 2 is a partial structural schematic view of an embodiment of the present invention
图 3为本实用新型实施例的局部***示意图  Figure 3 is a partial exploded view of the embodiment of the present invention
图 4为本实用新型实施例的局部纵向剖视图  Figure 4 is a partial longitudinal cross-sectional view of an embodiment of the present invention
图 5为本实用新型实施例的限位套仰视图  Figure 5 is a bottom view of the limit sleeve of the embodiment of the present invention
图中标记为： 1、 左前轮， 2、 右前轮， 3、 脚踏板， 4、 前轮支架， 4a、 前 轮支架中心孔， 4b、 第一弹簧插接孔， 4c、 转动限位凸台， 5、 上轴承， 6、 下 轴承， 7、 双螺纹轴， 8、 上螺母， 9、 下螺母， 10、 限位套， 10a、 第二弹簧插 接孔， 10b、 转动限位槽， 11、 手把管， 12、 手把， 13、 后轮， 14、 扭力弹簧。 具体实施方式  The figures are marked as: 1, left front wheel, 2, right front wheel, 3, foot pedal, 4, front wheel bracket, 4a, front wheel bracket center hole, 4b, first spring insertion hole, 4c, rotation limit Position boss, 5, upper bearing, 6, lower bearing, 7, double threaded shaft, 8, upper nut, 9, lower nut, 10, limit sleeve, 10a, second spring insertion hole, 10b, rotation limit Slot, 11, handlebar, 12, handlebar, 13, rear wheel, 14, torsion spring. detailed description
下面结合附图和具体实施例对本实用新型作进一步说明。  The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
参照图 1一图 5 :  Refer to Figure 1 Figure 5:
一种三轮滑板车， 包括左、 右前轮 1、 2和一脚踏板 3， 左、 右前轮 1、 2之 间一前轮支架 4， 该前轮支架 4的中心孔 4a上、 下方各设有上、 下轴承 5、 6， 上、 下轴承 5、 6内设有一双螺纹轴 7， 该双螺纹轴 7通过上、 下螺母 8、 9将一 限位套 10及脚踏板 3的前部锁紧在前轮支架 4上； 双螺纹轴 7的顶部与脚踏板 3连接， 脚踏板 3与一手把管 11连接， 手把管 11的顶部设有一手把 12; 脚踏 板 3的后部设有一后轮 13。  A three-wheeled scooter includes a left and right front wheel 1, 2 and a foot pedal 3, a front wheel bracket 4 between the left and right front wheels 1, 2, and a center hole 4a of the front wheel bracket 4 The upper and lower bearings 5, 6 are provided below, and the upper and lower bearings 5, 6 are provided with a double threaded shaft 7, which has a limit sleeve 10 and a foot pedal through the upper and lower nuts 8, 9. The front portion of the 3 is locked to the front wheel bracket 4; the top of the double threaded shaft 7 is connected to the foot pedal 3, the foot pedal 3 is connected to a hand tube 11, and the handle tube 11 is provided with a handle 12 at the top; A rear wheel 13 is provided at the rear of the pedal 3.
前轮支架 4和限位套 10之间设有一扭力弹簧 14， 该扭力弹簧 14套接于双 螺纹轴 7， 扭力弹簧 14的两端头分别位于双螺纹轴 7的正前方和正后方。  A torsion spring 14 is disposed between the front wheel bracket 4 and the limit sleeve 10, and the torsion spring 14 is sleeved on the double threaded shaft 7, and the ends of the torsion spring 14 are respectively located directly in front of and behind the double threaded shaft 7.
前轮支架中心孔 4a周边设有第一弹簧插接孔 4b， 限位套 10内的相应位置 设有第二弹簧插接孔 10a, 第一、 第二插接孔 4b、 10a也分别位于双螺纹轴 7的 正前方和正后方。 前轮支架中心孔 4a的周边设有转动限位凸台 4c， 限位套 10内对应地设有 转动限位槽 10b， 转动限位凸台 4c插接于转动限位槽 10b内。 A first spring insertion hole 4b is disposed around the center hole 4a of the front wheel bracket, and a second spring insertion hole 10a is disposed at a corresponding position in the limiting sleeve 10, and the first and second insertion holes 4b, 10a are also respectively located in the double Directly forward and rearward of the threaded shaft 7. The periphery of the front wheel bracket central hole 4a is provided with a rotation limiting boss 4c. The limiting sleeve 10 is correspondingly provided with a rotation limiting slot 10b, and the rotation limiting boss 4c is inserted into the rotation limiting slot 10b.
10限位套通过卡口固定于所述脚踏板 3不能转动， 前轮支架 4可绕双螺纹 轴 7转动，转动限位凸台 4c可在转动限位槽 10b内的转动，转动幅度为 ±25 ° 、 总共 50° 。  The limit sleeve is fixed to the foot pedal 3 through the bayonet, and the front wheel bracket 4 is rotatable about the double threaded shaft 7. The rotation limit boss 4c can be rotated in the rotation limit slot 10b, and the rotation range is ±25 °, total 50°.
本实用新型的工作原理是： 驱动滑板车时， 通过左右摆动手把 12带动脚踏 板 3倾斜,由于安装倾角在重力偏心作用下、 带动双螺纹轴 7、 前轮支架 4转动， 前轮支架 4驱动左、 右前轮 1、 2转向； 此时， 扭力弹簧 14的扭力小于人加在 脚踏板 3和手把 12上的作用力， 左、 右前轮 1、 2可以顺利在转动限位凸台 4c 和转动限位槽 10b所限定的幅度内实现转向。 当人离开脚踏板 3和手把 12时， 扭力弹簧 14的扭力通过双螺纹轴 7驱动前轮支架 4回到其初始角度。  The working principle of the utility model is as follows: when driving the scooter, the pedals 3 are tilted by the left and right swinging handles 12, and the front wheel brackets are driven by the inclination of the installation under the action of gravity eccentricity, and the front wheel bracket 4 is rotated. 4 driving the left and right front wheels 1, 2 steering; at this time, the torsion force of the torsion spring 14 is less than the force applied by the person on the pedal 3 and the handlebar 12, and the left and right front wheels 1, 2 can smoothly rotate in the limit Steering is achieved within the range defined by the position boss 4c and the rotation limit slot 10b. When the person leaves the pedal 3 and the handlebar 12, the torsion of the torsion spring 14 drives the front wheel bracket 4 back to its initial angle by the double threaded shaft 7.

Claims

权 利 要 求 书 claims
1、一种三轮滑板车， 包括两前轮和一脚踏板， 两前轮之间设有一前轮支架， 该前轮支架的中心孔上、 下方各设有一轴承， 轴承内设有一双螺纹轴， 该双螺 纹轴通过两螺母将一限位套及所述脚踏板的前部锁紧在前轮支架上； 所述双螺 纹轴的顶部通过脚踏板与一手把管连接， 手把管的顶部设有一手把； 所述脚踏 板的后部设有一后轮； 其特征在于， 所述前轮支架和限位套之间设有一扭力弹 簧， 该扭力弹簧套接于所述双螺纹轴， 其两头分别与所述前轮支架和限位套连 接。 1. A three-wheeled scooter, including two front wheels and a pedal. A front wheel bracket is provided between the two front wheels. The front wheel bracket is provided with a bearing above and below the center hole. There is a pair of bearings inside. Threaded shaft, the double-threaded shaft locks a limit sleeve and the front part of the foot pedal on the front wheel bracket through two nuts; the top of the double-threaded shaft is connected to a handle tube through the foot pedal, and the hand A handle is provided at the top of the handlebar; a rear wheel is provided at the rear of the foot pedal; It is characterized in that a torsion spring is provided between the front wheel bracket and the limit sleeve, and the torsion spring is sleeved on the The two ends of the double-threaded shaft are connected to the front wheel bracket and the limit sleeve respectively.
2、 根据权利要求 1所述的一种三轮滑板车， 其特征在于， 所述扭力弹簧将 所述前轮支架的轴心线的初始角度固定为与所述后轮的轴心线相平行。 2. A three-wheeled scooter according to claim 1, characterized in that the torsion spring fixes the initial angle of the axis of the front wheel bracket to be parallel to the axis of the rear wheel. .
3、 根据权利要求 1或 2所述的一种三轮滑板车， 其特征在于， 所述扭力弹 簧可以是两条相同的弹簧相叠。 3. A three-wheeled scooter according to claim 1 or 2, characterized in that the torsion spring can be two identical springs stacked on top of each other.
4、 根据权利要求 1所述的一种三轮滑板车， 其特征在于， 所述前轮支架的 中心孔周边设有转动限位凸台， 所述限位套内设有对应的转动限位槽， 所述转 动限位凸台插接在所述转动限位槽内。 4. A three-wheeled scooter according to claim 1, characterized in that a rotation limit boss is provided around the central hole of the front wheel bracket, and a corresponding rotation limit is provided in the limit sleeve. groove, and the rotation limiting boss is inserted into the rotation limiting groove.
5、 根据权利要求 1或 4所述的一种三轮滑板车， 其特征在于， 所述限位套 固定于所述脚踏板不能转动， 所述前轮支架绕所述双螺纹轴左右转动， 所述转 动限位凸台在所述转动限位槽内的转动， 转动幅度均为 ±25 ° 、 总共 50° 。 5. A three-wheeled scooter according to claim 1 or 4, characterized in that the limit sleeve is fixed to the foot pedal and cannot rotate, and the front wheel bracket rotates left and right around the double-threaded shaft. , the rotation range of the rotation limit boss in the rotation limit groove is ±25°, and the total rotation range is 50°.
PCT/CN2014/073720 2013-03-22 2014-03-19 Three-wheel scooter WO2014146580A1 (en)

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