Cushioning frame of electric bicycle

Abstract

A cushioning frame of an electric bicycle comprises a front frame body, a rear frame body and a motor mounting shell, the motor mounting shell is arranged between the front frame body and the rear frame body, and the front frame body comprises a head tube, an upper tube, a middle tube and a frame tube; the lower end of the middle pipe is connected with the motor mounting shell through a reinforcing box; the rear frame comprises an upper fork and a lower fork, a connecting seat, a connecting rod piece and a shock absorber are sequentially arranged at the front end of the upper fork, and the front end of the lower fork is hinged to a bottom bracket welded to a reinforcing box through a connecting plate. The utility model has the advantages of stable structure and good comfort, and can bring better experience feeling to users.

Description

Technical Field

[0001] The utility model relates to the technical field of electric bicycles, in particular to a shock-absorbing frame of an electric bicycle. Background Art

[0002] China has a large population, and transportation is a major issue. Bicycles and electric bicycles are becoming increasingly popular because they are convenient for travel, occupy little space, and can effectively reduce air pollution caused by fuel. Since electric bicycles have a higher average speed than ordinary bicycles, they will face greater road bumps and impacts during riding, so a more stable frame structure and certain shock-absorbing functions are required. How to increase the overall strength of the frame while having good shock-absorbing effects has become an urgent problem to be solved in the design of electric bicycles. Summary of the Invention

[0003] The problem to be solved by the utility model is to provide a shock-absorbing frame of an electric bicycle, which has a stable frame structure strength, good shock-absorbing effect, and high user comfort.

[0004] To solve the above technical problems, the technical solution adopted by the present utility model is as follows: An electric bicycle shock-absorbing frame includes a front frame, a rear frame, and a motor mounting shell. The motor mounting shell is arranged between the front frame and the rear frame. The front frame includes a head tube, an upper tube, a middle tube, and a frame tube. One end of the upper tube is fixedly connected to the head tube, and the other end of the upper tube is fixedly connected to the middle tube. One end of the frame tube is fixedly connected to the head tube, and the other end of the frame tube is fixedly connected to the motor mounting shell. The lower end of the middle tube is connected to the motor mounting shell through a reinforcing box. The reinforcing box includes two side plates and a back plate fixedly connected to the two side plates. The reinforcing box is U-shaped. The lower end of the middle tube is fixed to the back of the back plate, and the reinforcing box is fixedly connected to the motor mounting shell. The rear frame includes an upper fork and a lower fork. The tail end of the upper fork is fixedly connected to the tail end of the lower fork. A connecting rod piece is provided at the front end of the upper fork. The upper fork is connected to the connecting rod piece through a connecting seat. One end of the connecting seat is fixedly connected to the front end of the upper fork, and the other end of the connecting seat is hinged to one end of the connecting rod piece. A shock absorber is provided at the other end of the connecting rod piece. The connecting rod piece is hinged to the shock absorber. One end of the shock absorber extends between the two side plates of the reinforcing box and is hinged to the reinforcing box. The front end of the lower fork is connected to a bottom bracket through a connecting plate. One end of the connecting plate is fixedly connected to the lower fork, and the other end of the connecting plate is hinged to the bottom bracket. The bottom bracket is welded to the reinforcing box. A reinforcing block is provided between the top of the upper tube and the middle tube. The reinforcing block is welded to the middle tube and the upper tube respectively. An articulated seat welded to the middle tube is provided in the middle area of the middle tube. The articulated seat is hinged to the connecting rod piece. Symmetrically distributed mounting grooves are provided on both sides of the connecting seat. The two mounting grooves correspond to the two connecting rod pieces. The connecting rod piece extends into the mounting groove and is hinged to the connecting seat. A through hole is provided on the connecting rod piece. The tail ends of the upper fork and the lower fork are connected through a hook claw. The structure of the present utility model is stable, with good shock-absorbing effect and good comfort, which can improve the user's experience.

[0005] The beneficial effects of the present utility model are as follows: The frame of the present utility model has strong stability and good shock-absorbing effect, which can provide high comfort for users and good user experience. Description of the Drawings

[0006] Figure 1 It is a side view of the present utility model.

[0007] Figure 2 It is a top view of the upper fork and the connecting seat.

[0008] Explanation of the reference numerals in the drawings: 1. Head tube; 2. Upper tube; 21. Reinforcing block; 3. Frame tube; 4. Middle tube; 41. Reinforcing box; 42. Articulated seat; 5. Motor mounting shell; 6. Upper fork; 61. Connecting seat; 611. Mounting groove; 62. Connecting rod piece; 63. Shock absorber; 64. Hook claw; 7. Lower fork; 71. Connecting plate. Embodiment

[0009] The present utility model will be further described in detail below in conjunction with the accompanying drawings of the specification;

[0010] As Figure 1 shown, a shock-absorbing frame of an electric bicycle includes a front frame, a rear frame, and a motor mounting shell 5 provided between the front frame and the rear frame; the front frame includes a head tube 1, an upper tube 2, a middle tube 4, and a frame tube 3; the front end of the upper tube 2 is welded to the head tube 1, the rear end of the upper tube 2 is welded to the middle tube 4, a reinforcing box 41 is provided on the motor mounting shell 5 and is fixedly welded thereto, the reinforcing box 41 is U-shaped, the reinforcing box 41 includes two side plates and a back plate welded to the two side plates, the bottom of the middle tube 4 is welded to the back of the back plate, the frame tube 3 is provided below the upper tube 2, the frame tube 3 is fixedly welded to the head tube 1, and the rear end of the frame tube 3 is welded to the motor mounting shell 5; a reinforcing block 21 is provided between the top of the upper tube 2 and the middle tube 4, and the reinforcing block 21 is fixedly welded to the middle tube 2 and the upper tube 4 respectively.

[0011] As Figure 1 and Figure 2 shown, the rear frame includes an upper fork 6 and a lower fork 7, the rear ends of the upper fork 6 and the lower fork 7 are connected by a hook claw 64, a connecting seat 61 is provided at the front end of the upper fork 6 and is fixedly welded thereto, symmetrically distributed mounting grooves 611 are provided on the connecting seat 61, a connecting rod piece 62 is provided at the front end of the connecting seat 61, the two mounting grooves 611 correspond to the two connecting rod pieces 62, and the tail of the connecting rod piece 62 extends into the mounting groove 611 to be hinged to the connecting seat 61; a shock absorber 63 is provided at the front end of the connecting rod piece 62, and one end of the shock absorber 63 is connected to the connecting rod piece 62 by hinge; the other end of the shock absorber 63 extends between the two side plates of the reinforcing box 41 to be hinged to the reinforcing box 41, and the reinforcing box 41 strengthens the connection firmness at the motor mounting shell 5 and also enhances the stability of the vehicle body; a hinge seat 42 is provided on the middle tube 4 and is fixedly welded thereto, and the hinge seat 42 is hinged to the connecting rod piece 62; the stability of the connecting rod piece 62 is enhanced, and further the structural stability of the entire frame is improved. The front end of the lower fork 7 is connected to the bottom bracket through a connecting plate 71, one end of the connecting plate 71 is fixedly welded to the lower fork 7, the other end of the connecting plate 71 is hinged to the bottom bracket through a rotating shaft, and the bottom bracket is fixedly welded to the reinforcing box 41.

[0012] The frame of the present utility model has strong stability and good shock-absorbing effect, can give users high comfort, and has good user experience.

Claims

1. An electric bicycle shock-absorbing frame, comprising a front frame, a rear frame and a motor mounting shell, the motor mounting shell being arranged between the front frame and the rear frame, and characterized in that: The front frame includes a head tube, an upper tube, a middle tube, and a frame tube; one end of the upper tube is fixedly connected to the head tube, and the other end of the upper tube is fixedly connected to the middle tube; one end of the frame tube is fixedly connected to the head tube, and the other end of the frame tube is fixedly connected to the motor mounting case; the lower end of the middle tube is connected to the motor mounting case through a reinforcement box, the reinforcement box includes two side plates and a back plate fixedly connected to the two side plates, the reinforcement box is U-shaped, the lower end of the middle tube is fixed to the back of the back plate, and the reinforcement box is fixedly connected to the motor mounting case; the rear frame includes an upper fork and a lower fork, the tail end of the upper fork is fixedly connected to the tail end of the lower fork, a connecting rod piece is provided at the front end of the upper fork, the upper fork is connected to the connecting rod piece through a connecting seat, one end of the connecting seat is fixedly connected to the front end of the upper fork, the other end of the connecting seat is hinged to one end of the connecting rod piece, a shock absorber is provided at the other end of the connecting rod piece, the connecting rod piece is hinged to the shock absorber, and one end of the shock absorber extends between the two side plates of the reinforcement box and is hinged to the reinforcement box; the front end of the lower fork is connected to a bottom bracket through a connecting plate, one end of the connecting plate is fixedly connected to the lower fork, the other end of the connecting plate is hinged to the bottom bracket, and the bottom bracket is welded to the reinforcement box; a reinforcing block is provided between the top of the upper tube and the middle tube, and the reinforcing block is welded to the middle tube and the upper tube respectively; a hinge seat welded to it is provided in the middle area of the middle tube, and the hinge seat is hinged to the connecting rod piece; mounting grooves symmetrically distributed are provided on both sides of the connecting seat, the two mounting grooves correspond to two connecting rod pieces, the connecting rod pieces extend into the mounting grooves and are hinged to the connecting seat, and through holes are provided on the connecting rod pieces; the tail ends of the upper fork and the lower fork are connected by a hook claw.

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