阅读说明：本技术 一种电动三轮车转向机构 (Steering mechanism of electric tricycle ) 是由 茌庚申 于 2020-12-02 设计创作，主要内容包括：本发明涉及电动三轮车技术领域,具体涉及一种电动三轮车转向机构,包括车底架,其前端设置有旋转支承一并固定有转轴,所述旋转支承一上方设置链轮一,下方设置前叉,所述车底架的拐角处设置有旋转支承二并安装链轮二,所述链轮一和链轮二连接,所述链轮二上方设置有齿轮一,所述车底架的拐角处还设置有旋转支承三并在上方设置有转向柄,所述转向柄上方设置有齿轮二,所述车底架的后端设置有旋转支承四并在下方固定后桥总成,所述后桥总成上设置有拉环并与转向柄通过传动索连接,本发明通过链传动和齿轮传动,实现了在操作电动三轮车前轮转向的同时,带动后轮向前轮转向的反方向小幅转向,减小了车身的转弯半径,提高了电动三轮车的操控性。(The invention relates to the technical field of electric tricycles, in particular to a steering mechanism of an electric tricycle, which comprises a vehicle chassis, wherein the front end of the vehicle chassis is provided with a rotary support, a rotating shaft is fixed together with the rotary support, a chain wheel I is arranged above the rotary support I, a front fork is arranged below the rotary support I, a rotary support II is arranged at the corner of the vehicle chassis, a chain wheel II is installed on the chain wheel II, the chain wheel I is connected with the chain wheel II, a gear I is arranged above the chain wheel II, a rotary support III is also arranged at the corner of the vehicle chassis, a steering handle is arranged above the rotary support III, a gear II is arranged above the steering handle, a rotary support IV is arranged at the rear end of the vehicle chassis, a rear axle assembly is fixed below the rotary support IV, a pull ring is arranged on the rear axle assembly and is connected with the steering handle through a transmission cable, the steering mechanism realizes small-amplitude steering of a rear, the turning radius of the vehicle body is reduced, and the controllability of the electric tricycle is improved.)

1. The utility model provides an electric tricycle steering mechanism which characterized in that: including vehicle bottom frame (1), be the corner in the middle of vehicle bottom frame (1), the front end is provided with rotatory supporting (8), rotatory supporting (8) center vertical fixation has pivot (9), rotatory supporting (8) is provided with sprocket (2) with pivot (9) department top that meets, rotatory supporting (8) is provided with front fork (10) with pivot (9) department of meeting below, the corner the place ahead of vehicle bottom frame (1) is provided with rotatory supporting two (11), rotatory supporting two (11) top is provided with sprocket two (3), sprocket one (2) and sprocket two (3) are parallel and connect through driving chain (4), sprocket two (3) top is provided with gear one (5), the corner rear of vehicle bottom frame (1) is provided with rotatory supporting three (12), rotatory supporting three (12) top is provided with steering handle (7), the automobile steering frame is characterized in that a second gear (6) is arranged above the steering handle (7), the first gear (5) is meshed with the second gear (6), a fourth rotary support (13) is arranged at the rear end of the automobile chassis (1), an integrated rear axle assembly (14) is fixed below the fourth rotary support (13), pull rings (15) are horizontally fixed in front of two sides of the integrated rear axle assembly (14), and the integrated rear axle assembly (14) is connected with the steering handle (7) through a transmission cable (17).

2. The electric tricycle steering mechanism of claim 1, wherein: two ends of the steering handle (7) are respectively provided with a hole (7a), and the distance between the holes (7a) is equal to the distance between the pull rings (15).

3. The electric tricycle steering mechanism of claim 1, wherein: the first gear (5) and the second gear (6) are both bevel gears, and the transmission ratio is 3: 1-6: 1.

4. The electric tricycle steering mechanism of claim 1, wherein: the included angle of the middle corner of the vehicle chassis (1) is 135 degrees.

5. The electric tricycle steering mechanism of claim 1, wherein: the transmission cable (17) is a stainless steel wire.

6. The electric tricycle steering mechanism of claim 1, wherein: and a handlebar (16) is arranged at the top end of the rotating shaft (9).

Technical Field

The invention relates to the technical field of electric tricycles, in particular to a steering mechanism of an electric tricycle.

Background

The electric tricycle is used as a common vehicle in life, is low-carbon and environment-friendly, can flexibly run on roads with various limited widths, has high practicability and large market scale.

The general electric tricycles in the market at present basically adopt a structure that a front wheel is used for steering and a rear wheel is used for driving, and the electric tricycles with the structure often have the defects of inflexible turning, overlarge turning radius and poor turning stability, so that the controllability and flexibility of the electric tricycle are greatly reduced, and therefore, the design of a flexible steering mechanism suitable for the electric tricycles is necessary.

Disclosure of Invention

Aiming at the defects of the existing products, the invention provides a steering mechanism of an electric tricycle, which greatly reduces the turning radius of the electric tricycle by cooperatively steering a front wheel and a rear wheel.

The invention is realized by the following technical scheme:

a steering mechanism of an electric tricycle comprises a vehicle underframe, wherein the middle of the vehicle underframe is provided with a corner, the front end of the vehicle underframe is provided with a first rotary support, the center of the first rotary support is vertically fixed with a rotating shaft, a first chain wheel is arranged above the joint of the first rotary support and the rotating shaft, a front fork is arranged below the joint of the first rotary support and the rotating shaft, a second rotary support is arranged in front of the corner of the vehicle underframe, a second chain wheel is arranged above the second rotary support, the first chain wheel and the second chain wheel are parallel and are connected through a transmission chain, a first gear is arranged above the second chain wheel, a third rotary support is arranged behind the corner of the vehicle underframe, a steering handle is arranged above the third rotary support, a second gear is arranged above the steering handle, the first gear and the second gear are meshed, a fourth rotary support is arranged at the rear end of the vehicle underframe, and an integrated rear axle assembly is, and the integrated rear axle assembly is connected with the steering handle through a transmission cable.

Furthermore, two ends of the steering handle are respectively provided with a hole, the distance between the holes is equal to the distance between the pull rings, the holes are connected with the pull rings on the same side through a transmission cable, and the holes and the pull rings form a parallelogram structure together with the integrated rear axle assembly.

Furthermore, the first gear and the second gear are both bevel gears, the transmission ratio is 3: 1-6: 1, and the rotation amplitude of the second gear is smaller than that of the first gear.

Furthermore, the included angle of the middle corner of the vehicle underframe is 135 degrees.

Further, the transmission cable is a stainless steel wire.

Furthermore, the top end of the rotating shaft is provided with a handlebar for controlling the steering of the front wheels.

Compared with the prior art, the invention has the beneficial effects that:

the invention has reasonable structure, low failure rate and convenient maintenance, adopts mature and reliable chain transmission and gear transmission technology, has high transmission efficiency, realizes the small-amplitude steering in the opposite direction of driving the rear wheel to steer the front wheel while steering the front wheel of the electric tricycle, effectively reduces the turning radius of the tricycle body and improves the controllability and flexibility of the electric tricycle; the structure is a pure mechanical structure, the structure of the front wheel and the rear wheel of the existing mainstream electric tricycle does not need to be changed, and an additional electric structure does not need to be added, so that the manufacturing cost is saved, and the endurance of the electric tricycle is not influenced by additional power consumption.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a right side view of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 1.

Fig. 4 is a schematic view of an embodiment of the present invention.

In the figure: 1. a vehicle underframe; 2. a chain wheel I; 3. a second chain wheel; 4. a drive chain; 5. a first gear; 6. a second gear; 7. a steering handle; 7a, a hole; 8. a first rotary support; 9. a rotating shaft; 10. a front fork; 11. a second rotary support; 12. a third rotary support; 13. rotating and supporting four; 14. an integrated rear axle assembly; 15. a pull ring; 16. a handlebar; 17. a transmission cable; 18. a front wheel; 19. a rear wheel.

Detailed Description

The technical solution in the embodiments of the present invention is clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1 to 4, an electric tricycle steering mechanism comprises a vehicle underframe 1, wherein the middle of the vehicle underframe 1 is provided with a corner, the front end of the vehicle underframe is provided with a first rotary support 8, the center of the first rotary support 8 is vertically fixed with a rotating shaft 9, a first chain wheel 2 is arranged above the joint of the first rotary support 8 and the rotating shaft 9, a front fork 10 is arranged below the joint of the first rotary support 8 and the rotating shaft 9, the rotating shaft 9 can freely rotate in the first rotary support 8, a second rotary support 11 is arranged in front of the corner of the vehicle underframe 1, a second chain wheel 3 is arranged above the second rotary support 11, the first chain wheel 2 and the second chain wheel 3 are parallel and connected through a transmission chain 4, the transmission distance is far in a chain transmission mode without elastic sliding, the accurate transmission ratio can be kept, the first gear 5 is arranged above the second chain wheel 3, the first gear 5 and the second chain wheel 3 synchronously rotate, a, a steering handle 7 is arranged above the third rotary support 12, a second gear 6 is arranged above the steering handle 7, the steering handle 7 and the second gear 6 synchronously rotate, the first gear 5 is meshed with the second gear 6, the rear end of the chassis 1 is provided with a fourth rotary support 13, an integrated rear axle assembly 14 is fixed below the fourth rotary support 13, the integrated rear axle assembly 14 integrates an electric motor, a differential mechanism, a driving shaft and a brake, the structure is compact, the installation is convenient, the maintenance is convenient, the fourth rotary support 13 is used for bearing the integrated rear axle assembly 14 and enabling the integrated rear axle assembly 14 to rotate relative to the chassis 1, pull rings 15 are horizontally fixed in front of two sides of the integrated rear axle assembly 14 respectively, and the integrated rear axle assembly 14 is connected with the steering handle 7 through a transmission cable 17. This structural design is reasonable, and the reliability is high.

Two ends of the steering handle 7 are respectively provided with a hole 7a, the distance between the holes 7a is equal to the distance between the pull rings 15, the holes 7a are connected with the pull rings 15 on the same side through a transmission cable 17, the holes and the pull rings 15 form a parallelogram structure with the integrated rear axle assembly 14, and when the steering handle 7 turns, the integrated rear axle assembly 14 is driven to synchronously turn in the same direction.

The first gear 5 and the second gear 6 are both bevel gears, the transmission ratio is 3: 1-6: 1, the rotation amplitude of the second gear 6 is smaller than that of the first gear 5, the gear transmission mode is compact in structure, high in transmission efficiency and large in speed ratio range, and the gear transmission mode can be used for space transmission of staggered shafts.

The included angle of the middle corner of the vehicle chassis 1 is 135 degrees, and the spatial transmission of the staggered shaft is realized by matching the first gear 5 and the second gear 6.

The transmission cable 17 is a stainless steel wire, has good wear resistance and corrosion resistance, high tensile strength and fatigue resistance, and long service life.

The top end of the rotating shaft 9 is provided with a handlebar 16 for steering operation.

The working principle of the steering mechanism of the tricycle is as follows: in the embodiment, when the handle bar 16 is operated to turn left, the rotating shaft 9, the front fork 10 and the chain wheel I2 are driven to synchronously turn left, the front fork 10 drives the front wheel 18 to turn left, meanwhile, the chain wheel I2 drives the chain wheel II 3 to turn left through the transmission chain 4, the gear I5 connected with the chain wheel II 3 also turns left, the gear II 6 meshed with the gear I5 turns right in the opposite direction, due to the transmission ratio of the gear I5 and the gear II 6, the rotation amplitude of the gear II 6 is smaller than that of the gear I5, the steering handle 7 connected with the gear II 6 synchronously turns right, the steering handle 7 pulls the integrated rear axle assembly 14 and the rear wheel 19 thereon to rotate right through the transmission rope 17, on the contrary, when the handle bar 16 is operated to rotate right, the same way, when the front wheel 18 turns, the rear wheel 19 synchronously turns to a small amplitude in the opposite direction, so that the turning radius of the electric tricycle body is reduced, effectively improving the controllability and flexibility.

While the invention has been described with reference to specific preferred embodiments, it will be understood by those skilled in the art that various changes, modifications and additions may be made without departing from the spirit and scope of the invention.