Steering device of electric power-assisted tricycle

Abstract

The utility model discloses a steering device of an electric power-assisted tricycle, which comprises a main body frame and a frame main body, a frame head tube is arranged at the front end of a lower tube, a bottom plate is arranged at the position, close to the middle, of the main body frame, a screw vertical tube is arranged in the frame head tube in a penetrating manner and is in running fit with the frame head tube, and the upper end of the screw vertical tube penetrates through the bottom plate. A locking nut screwed with the screw vertical pipe is arranged at the top of the bottom plate, an upper blocking seat is arranged at the upper end of the frame head pipe and rotationally connected with the frame head pipe through an upper bearing, a plurality of petal blocks are formed at the top of the upper blocking seat, a radial groove is formed between every two adjacent petal blocks, and a steering connecting plate is fixed to the bottom of the bottom plate. A plurality of bayonets are formed in the steering connecting plate, a radial rib is formed between every two adjacent bayonets, the petal blocks correspond to the bayonets in a one-to-one mode, the petal blocks are arranged in the bayonets in a clamped mode, and the radial ribs are arranged in the radial grooves in a clamped mode. The steering mechanism has the advantages of being balanced in stress distribution, stable in steering, reliable in linkage relation, better in waterproof performance and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to an electric power-assisted tricycle, especially to an electric power-assisted tricycle steering device. BACKGROUND

[0002] The electric power-assisted tricycle is usually used for carrying goods. The frame structure of the existing tricycle is designed at the rear part of the tricycle. The front steering device uses a single wheel as a steering wheel. The steering is implemented by driving the front fork and the front wheel fixed on the front fork by the handle. The carrying rack is placed at the rear half of the frame. The battery is installed at the middle of the frame or above the lower tube. The motor hanger is placed at the five-way position of the frame. When riding, the pedals are stepped to drive the motor to work. The motor power-assisted circular transmission drives the chain. The chain transmits power to the gear on the rear wheel crossbar to drive the rear double wheels to move together for riding. The whole vehicle body is pushed forward. Because the rear part of the frame is used for carrying goods, the turning is unstable when encountering road bumps. The steering may be light and fluffy, and it is not easy to control the balance of the vehicle, which has certain safety hazards. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide an electric power-assisted tricycle steering device with balanced stress distribution, stable steering, reliable linkage relationship, and better waterproof performance in view of the deficiencies of the prior art.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme.

[0005] An electric power-assisted tricycle steering device comprises a main body frame and a frame body. The frame body comprises a lower tube extending to the bottom of the main body frame. The end of the main body frame close to the frame body is provided with a steering support pipe. The front end of the lower tube is provided with a frame head pipe. The position close to the middle of the main body frame is provided with a bottom plate. The frame head pipe is arranged below the bottom plate. A screw rod vertical pipe is arranged in the frame head pipe and rotates with the frame head pipe. The upper end of the screw rod vertical pipe penetrates the bottom plate. The top of the bottom plate is provided with a locking nut which is screwed with the screw rod vertical pipe. The upper end of the frame head pipe is provided with an upper seat. The upper seat is connected with the frame head pipe through an upper peeling. The top of the upper seat is formed with a plurality of petal blocks. Radial grooves are formed between adjacent two petal blocks. The bottom of the bottom plate is fixed with a steering connecting plate. A plurality of clamping holes are arranged on the steering connecting plate. Radial ribs are arranged between adjacent two clamping holes. The petal blocks and the clamping holes are one-to-one corresponding. The petal blocks are clamped in the clamping holes. The radial ribs are clamped in the radial grooves.

[0006] Preferably, the number of the petal blocks and the clamping holes is four.

[0007] Preferably, a first through hole is arranged on the steering connecting plate for the screw rod vertical pipe to penetrate.

[0008] Preferably, a second through hole is formed in the upper seat for the screw rod vertical pipe to pass through.

[0009] Preferably, the screw rod vertical pipe and the head pipe are connected through a lower bushing.

[0010] Preferably, the bottom of the main frame is provided with a front wheel connecting plate on each side for mounting a wheel.

[0011] Preferably, the main frame is provided with two downwardly extending steering seat pipes on one side close to the main body, and the lower pipe is located between the two steering seat pipes.

[0012] The utility model discloses an electric power-assisted tricycle steering device, the main frame is used for installing the warehouse, the handle and the steering support pipe are connected together with the rear end part of the main frame, and the wheel is turned through the operation handle, and the utility model discloses the main frame as the cargo-carrying main part, which is not only more balanced in stress distribution, but also more stable and not easy to roll over during steering. Meanwhile, the upper seat is arranged on the upper end of the head pipe, and the clamping cooperation of the petal block and the socket makes the main frame and the screw rod vertical pipe rotate synchronously, and the linkage relationship is more reliable. In addition, based on the locking relationship between the locking nut and the screw rod vertical pipe, the waterproof performance between the screw rod vertical pipe and the head pipe can be effectively improved, and the application requirements are better met. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a perspective view of the electric power-assisted tricycle steering device.

[0014] Figure 2 It is an exploded view of the electric power-assisted tricycle steering device.

[0015] Figure 3 It is a bottom structure view of the main frame.

[0016] Figure 4 It is a perspective view of the upper seat. DETAILED DESCRIPTION

[0017] The utility model will be described in more detail below in combination with the drawings and examples.

[0018] The utility model discloses an electric power-assisted tricycle steering device, combining Figures 1 to 4As shown, it includes a main frame 1 and a frame body 2, the frame body 2 includes a lower tube 20 extending to the bottom of the main frame 1, the main frame 1 is provided with a steering support tube 10 near one end of the frame body 2, the front end of the lower tube 20 is provided with a frame head tube 21, the main frame 1 is provided with a bottom plate 11 near the middle position, the frame head tube 21 is arranged below the bottom plate 11, a screw vertical tube 22 is arranged in the frame head tube 21 and is rotationally connected with the frame head tube 21, the upper end of the screw vertical tube 22 penetrates through the bottom plate 11, the top of the bottom plate 11 is provided with a locking nut 13 which is screwed with the screw vertical tube 22, the upper end of the frame head tube 21 is provided with an upper seat 14, the upper seat 14 is rotationally connected with the frame head tube 21 through an upper bushing 15, the top of the upper seat 14 is formed with a plurality of petal blocks 140, radial grooves 141 are formed between adjacent two petal blocks 140, the bottom of the bottom plate 11 is fixedly provided with a steering connecting plate 16, a plurality of clamping holes 160 are formed in the steering connecting plate 16, radial rib 161 are formed between adjacent two clamping holes 160, the petal blocks 140 correspond to the clamping holes 160 one by one, the petal blocks 140 are clamped in the clamping holes 160, and the radial rib 161 is clamped in the radial groove 141.

[0019] In the above structure, the main frame 1 is used for mounting a warehouse, the handle 19 and the steering support tube 10 are connected together at the rear end of the main frame 1, and the rotation of the handle 19 drives the steering of the wheels, the main frame 1 is used as a cargo carrying main part, the stress distribution is more balanced, and the steering process is more stable and less likely to overturn. Meanwhile, the upper seat 14 is arranged at the upper end of the frame head tube 21 and can rotate, the petal blocks 140 are clamped and matched with the clamping holes 160, the main frame 1 and the screw vertical tube 22 are synchronously rotated, the linkage relationship is more reliable, and the waterproof performance between the screw vertical tube 22 and the frame head tube 21 is effectively improved based on the locking relationship between the locking nut 13 and the screw vertical tube 22, thereby better meeting the application requirements.

[0020] Please refer to Figure 3 and Figure 4 In the embodiment, the number of the petal blocks 140 and the clamping holes 160 is four. Based on the above structure, the top of the upper seat 14 is formed with a cross-shaped groove, meanwhile, the steering connecting plate 16 is formed with a cross-shaped rib, the petal blocks 140 are clamped and matched with the clamping holes 160, and the radial rib 161 is clamped and matched with the radial groove 141, so that the main frame 1 and the screw vertical tube 22 are synchronously rotated, thereby realizing reliable linkage.

[0021] In order to facilitate the screw vertical tube 22 to penetrate out, combined with Figure 3 andFigure 4 As shown in the embodiment, the steering connecting plate 16 is provided with a first through hole 162 for the screw rod vertical pipe 22 to pass through.

[0022] In the embodiment, the screw rod vertical pipe 22 and the frame head pipe 21 need to be smoothly connected, and for this purpose, please refer to Figure 2 The screw rod vertical pipe 22 and the frame head pipe 21 are connected through the lower bushing 23.

[0023] The embodiment is provided with two front wheels at the bottom of the main frame 1, and in combination with Figure 2 and Figure 3 As shown in the embodiment, the bottom of the main frame 1 is provided with a front wheel connecting plate 17 for mounting the front wheel 3.

[0024] As a preferred mode, the main frame 1 is provided with two downward extending steering guide pipes 18 near one side of the frame main body 2, and the lower pipe 20 is located between the two steering guide pipes 18. Among them, the two steering guide pipes 18 mainly limit the swing angle of the lower pipe 20, and by setting the two steering guide pipes 18, the maximum angle of steering can be controlled, which meets the safety angle requirement of steering and is easy for the rider to control the vehicle.

[0025] The electric power-assisted tricycle steering device disclosed in the utility model is provided with a steering hole in the center position of the goods frame bottom plate, and a cross-shaped clamping groove clamps the upper seat, the goods frame main body rotates synchronously with the bushing, and the steering handlebar drives the goods frame main body to rotate at the same time, the goods frame main body drives the double-wheel steering at the same time, the goods are loaded on the goods frame main body, the front part is not easy to tilt and slip when steering, the steering handlebar is not easy to be raised, and the safety of vehicle driving is improved. Meanwhile, the handle and the handle supporting pipe are connected together with the rear end part of the main frame, the handle drives the wheel to steer when rotating, the two-wheel frame supporting structure is used as the goods carrying main part, the steering is more stable and not easy to roll over, the steering guide pipe is arranged at the rear of the goods frame, and the maximum angle of steering can be controlled.

[0026] Compared with the prior art, the utility model discloses the front goods shelf frame main body is set to the part of steering structure, and the structure that handlebar is combined together with goods frame main body and front and left and right wheel can improve steering efficiency, and balance the weight distribution of vehicle front and rear wheels, and steering is more stable and safer, and the setting of steering baffle pipe can play the angle of steering angle and comply with the angle of safe riding. Meanwhile, the inner milling groove (cross slot) of goods frame main body bottom plate is set to mutually fit with the upper bracket (with outer cross slot), and the fixing effect is particularly precise. Furthermore, the vertical pipe structure has the tooth, and the pipe has the inner locking tooth, can install waterproof locking screw, plays the waterproof effect. In addition, handlebar vertical pipe is locked and is connected with steering support pipe respectively, and the support pipe connection is triangle type more stable, and the middle support pipe plays more stable locking effect.

[0027] The above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, and the modification, equivalent replacement or improvement etc. that are made in the technical range of the utility model should be contained in the range of protection of the utility model.

Claims

1. An electrically assisted tricycle steering device, characterized by comprising: The utility model provides a bicycle frame, including main body frame and frame main body, the frame main body includes the lower pipe of extension to the bottom of main body frame, the main body frame is equipped with steering support pipe near one end of frame main body, the lower pipe is equipped with frame head pipe in the front end, the main body frame is equipped with bottom plate near the position of middle, the frame head pipe is located the below of bottom plate, the screw rod vertical pipe is equipped with in the frame head pipe and two rotation cooperation, the upper end of screw rod vertical pipe passes through bottom plate, the top of bottom plate is equipped with with screw rod vertical pipe screwing locking nut, the upper end of frame head pipe is equipped with upper rest, and the upper rest is connected through upper pei ling rotation between frame head pipe, the top of upper rest forms a plurality of petal piece, forms the radial groove between two petal pieces of adjacent, the bottom of bottom plate is fixed with steering connecting plate, a plurality of bayonet is opened in steering connecting plate, and radial rib is formed between two bayonet of adjacent, the petal piece with the bayonet one to one corresponds, the petal piece is clamped in the bayonet, and radial rib is clamped in radial groove.

2. The electrically assisted tricycle steering device of claim 1, wherein The number of the petal piece and the bayonet is four.

3. The electrically assisted tricycle steering device of claim 1, wherein The steering connecting plate is opened with the first through -hole that can pass through the screw rod vertical pipe.

4. The electrically assisted tricycle steering apparatus of claim 1 wherein, The upper rest is opened with the second through -hole that can pass through the screw rod vertical pipe.

5. The electrically assisted tricycle steering apparatus of claim 1 wherein, The screw rod vertical pipe is connected through lower pei ling rotation between frame head pipe.

6. The electrically assisted tricycle steering apparatus of claim 1 wherein, The bottom of the main body frame is provided with a front wheel connecting piece on both sides for mounting a wheel.

7. The electrically assisted tricycle steering apparatus of claim 1 wherein, The main body frame is provided with two downward extending steering stop pipes on one side near the frame main body, and the lower pipe is located between the two steering stop pipes.

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