Rear swing structure of electro-tricycle

Abstract

The utility model relates to a rear swing structure of an electro-tricycle, which comprises a rear wheel frame and a main frame, a driving motor is arranged on the rear wheel frame, the driving motor drives wheels on the left side and the right side through a driving shaft, the rear wheel frame is connected with the main frame through a pivot, a rear frame is arranged above the rear wheel frame, and the main frame is connected with the rear wheel frame. The rear frame and the rear wheel frame are connected through two sets of shock absorbers, the upper end of each set of shock absorbers is hinged to the rear frame, the lower end of each set of shock absorbers is hinged to the rear wheel frame, and the two sets of shock absorbers are distributed in a bilateral symmetry mode. The front single wheel and the rear double wheels are combined, the swing structure is arranged between the rear double-wheel structure and the rear frame, the rear swing structure can enable the main frame and the rear frame to incline towards one side during turning, the running stability is improved, and the electric tricycle has the advantages of being reasonable in structure and improving the stability.

Description

Technical Field

[0001] The utility model relates to vehicle technology, in particular to a rear swing structure of an electric tricycle. Background Art

[0002] As disclosed in the utility model with the announcement number CN218085856U, a steering mechanism of a reverse tricycle is disclosed, including a vehicle frame, characterized in that: a fixed bracket is fixedly connected to the front side of the vehicle frame, and left and right two groups of swing arms are symmetrically arranged on both sides of the fixed bracket. Each group of swing arms includes an upper swing arm and a lower swing arm. The inner ends of the upper swing arm and the lower swing arm are respectively hinged to the upper part and the lower part of the fixed bracket, and the outer ends of the upper swing arm and the lower swing arm are respectively hinged with an upper pivot part and a lower pivot part. A steering shaft is pivotally connected to the upper pivot part and the lower pivot part at the upper and lower ends respectively. A wheel shaft and a steering arm are fixed on the steering shaft. A driving arm is pivotally connected to the fixed bracket. The input end of the driving arm is connected to the front fork shaft of the reverse tricycle handle. The driving arm has two left and right output ends, and the left and right output ends of the driving arm are respectively hinged to the steering arms on the left and right steering shafts through connecting rods.

[0003] The utility model adopts the movable connection between the fixed bracket and the upper and lower swing arms, which increases the support and strength of the steering mechanism. The upper swing arms on both sides are connected by a shock absorber to realize the synchronous left and right inclination of the steering shaft, and the shock absorber also plays a role in shock absorption. The utility model has the characteristics of reasonable structure, high support and strength, and stable steering.

[0004] The above reverse tricycle adopts the combination of two front wheels and one rear wheel. The turning flexibility of the two front wheels is not as good as that of a tricycle with a single front wheel. And the existing tricycle with a single front wheel and two rear wheels has a problem of poor stability when turning due to the influence of centrifugal force. Content of the Utility Model

[0005] The purpose of the utility model is to provide a rear swing structure of an electric tricycle, which adopts the combination of a single front wheel and two rear wheels. A swing structure is arranged between the rear double-wheel structure and the vehicle frame. When turning, the rear swing structure can tilt the rear vehicle frame to one side, increasing the driving stability, and has the characteristics of reasonable structure and improved stability.

[0006] To achieve the above purpose, the following technical solutions are adopted:

[0007] A rear swing structure of an electric tricycle includes a rear wheel vehicle frame and a main vehicle frame. A driving motor is arranged on the rear wheel vehicle frame, and the driving motor drives the wheels on both left and right sides through a driving shaft. It is characterized in that: the rear wheel vehicle frame is connected to the main vehicle frame through a pivot shaft. A rear vehicle frame is arranged above the rear wheel vehicle frame. The rear vehicle frame and the rear wheel vehicle frame are connected through two groups of shock absorbers. The upper end of each group of shock absorbers is hinged to the rear vehicle frame, and the lower end of each group of shock absorbers is hinged to the rear wheel vehicle frame. The two groups of shock absorbers are symmetrically distributed left and right; the rear vehicle frame is fixedly connected to the main vehicle frame.

[0008] Each set of shock absorbers includes a shock spring and a hydraulic shock absorber cylinder. The shock springs and hydraulic shock absorber cylinders of the two sets of shock absorbers are arranged in a line; the hydraulic shock absorber cylinders are located outside the shock springs.

[0009] The rear frame described above includes a seat bracket and a swing arm. The swing arm is located below the seat bracket. A longitudinal arm is provided at the bottom of the seat bracket. The upper end of the longitudinal arm is fixedly connected or integrated with the seat bracket. The lower end of the longitudinal arm is hinged to the middle of the swing arm. The seat bracket and the swing arm are also connected by adjusting linkages. There are two adjusting linkages, and the two adjusting linkages are symmetrically distributed on both sides of the longitudinal arm; both ends of the adjusting linkages are movably connected to the seat bracket and the swing arm respectively. The seat bracket is fixedly connected to the main frame.

[0010] The upper ends of the shock springs and the hydraulic shock absorber cylinders are hinged to the swing arm.

[0011] The utility model pivotally connects the main frame with the rear wheel frame at the rear, and the rear wheel frame and the rear frame above are connected by shock absorbers. When the front wheel turns, the main frame and the seat bracket tilt towards the steering side with the pivot as the center; the adjusting linkages on both sides of the longitudinal arm are used to overcome the angular deviation during product processing, and can adjust the horizontal angle of the seat bracket. The swing arm and the two sets of shock absorbers play a shock-absorbing role and provide a restoring force for the main frame and the seat bracket to return to the original position; the utility model improves the stability of the electric tricycle during turning by the left and right swinging of the mutually fixedly connected main frame and seat bracket. At the same time, the shock absorbers provide shock-absorbing and restoring forces for the seat bracket, and has the characteristics of reasonable structure, stable and comfortable driving. Description of the Drawings

[0012] Figure 1 It is a three-dimensional structure schematic diagram (one) of the rear wheel frame and the rear frame of the utility model;

[0013] Figure 2 It is a three-dimensional structure schematic diagram (two) of the rear wheel frame and the rear frame of the utility model;

[0014] Figure 3 It is a side structure schematic diagram of the rear wheel frame and the rear frame of the utility model;

[0015] Figure 4 It is a front side structure schematic diagram of the rear wheel frame and the rear frame of the utility model;

[0016] Figure 5 It is a rear side structure schematic diagram of the rear wheel frame and the rear frame of the utility model. Detailed Description of the Invention

[0017] Such as Figures 1-5As shown in the figure, an electric tricycle rear swing structure includes a rear wheel frame 1 and a main frame 2. A drive motor 11 is provided on the rear wheel frame 1. The drive motor 11 drives the wheels 13 on both left and right sides through a drive shaft 12. The rear wheel frame 1 and the main frame 2 are connected by a pivot 3. A rear frame 6 is provided above the rear wheel frame 1. The rear frame 6 and the rear wheel frame 1 are connected by two groups of shock absorbers. The upper end of each group of shock absorbers is hinged to the rear frame, and the lower end of each group of shock absorbers is hinged to the rear wheel frame. The two groups of shock absorbers are symmetrically distributed left and right.

[0018] The rear frame 6 described above includes a seat bracket 61 and a swing arm 62. The swing arm 62 is located below the seat bracket 61. A longitudinal arm 63 is provided at the bottom of the seat bracket 61. The upper end of the longitudinal arm 63 is integrally connected with the seat bracket 61. The lower end of the longitudinal arm 63 is hinged to the middle of the swing arm 62. The seat bracket 61 and the swing arm 62 are also connected by an adjustment link 64. There are two adjustment links 64, and the two adjustment links 64 are symmetrically distributed on both sides of the longitudinal arm 63; both ends of the adjustment link 64 are movably connected to the seat bracket 61 and the swing arm 62 respectively. The seat bracket 61 is fixedly connected to the main frame 2.

[0019] Each group of shock absorbers includes a shock spring 71 and a hydraulic shock absorber cylinder 72. The upper ends of the shock spring 71 and the hydraulic shock absorber cylinder 72 are hinged to the swing arm 62, and the lower ends of the shock spring 71 and the hydraulic shock absorber cylinder 72 are hinged to the rear wheel frame. The shock springs 71 and the hydraulic shock absorber cylinders 72 of the two groups of shock absorbers are arranged in a line; the hydraulic shock absorber cylinder 72 is located outside the shock spring 71.

[0020] In the present utility model, the main frame 2 and the rear wheel frame 1 at the rear are connected by a pivot 3. Since two wheels are provided on the left and right of the rear wheel frame 1, the rear wheel frame 1 cannot swing left and right. And the front wheels of the front part of the main frame 2 adopt a single-wheel structure. Therefore, the left and right swing of the main frame 2 can be used to ensure the stability of turning.

[0021] At the same time, in order to achieve the controllability, stability and comfort of the left and right swing in the present utility model, the rear wheel frame 1 and the rear frame 6 above are connected by a shock absorption mechanism and an adjustment mechanism. The rear frame 6 is fixedly connected to the main frame 1; when the front wheels turn, the seat bracket 61 of the main frame 2 and the rear frame tilts to one side with the pivot 3 as the center. When the main frame 5 and the rear frame 6 tilt, they are subjected to the reverse acting force supported by the shock absorption mechanism. The greater the tilt angle, the greater the reverse acting force received, so as to ensure the controllability and stability; the adjustment mechanism is matched by the adjustment links 64 on both sides of the longitudinal arm 63 and the swing arm 62, and can be used to adjust the horizontal angle of the seat bracket 61; at the same time, the swing arm 62 and the two groups of shock absorbers cooperate to play a shock absorption role on the rear frame 6, improving the comfort of the frame.

[0022] The utility model improves the turning stability of an electric tricycle by swinging left and right the main frame and the seat bracket which are fixedly connected to each other. At the same time, a shock absorber provides a shock-absorbing and resetting force for the seat bracket, having the characteristics of reasonable structure, stable and comfortable driving.

Claims

1. An electric tricycle rear swing structure, including a rear wheel frame and a main frame, a drive motor is arranged on the rear wheel frame, and the drive motor drives the wheels on both left and right sides through a drive shaft, and is characterized in that: The rear wheel frame is connected to the main frame through a pivot. A rear frame is arranged above the rear wheel frame. The rear frame and the rear wheel frame are connected through two groups of shock absorbers. The upper end of each group of shock absorbers is hinged to the rear frame, and the lower end of each group of shock absorbers is hinged to the rear wheel frame. The two groups of shock absorbers are symmetrically distributed left and right; the rear frame is fixedly connected to the main frame.

2. The rear swing structure of an electric tricycle according to claim 1, characterized in that: The rear frame includes a seat support and a swing arm. The swing arm is located below the seat support. A longitudinal arm is provided at the bottom of the seat support. The upper end of the longitudinal arm is fixedly connected to or integrated with the seat support. The lower end of the longitudinal arm is hinged to the middle of the swing arm. The seat support and the swing arm are also connected through an adjusting link. There are two adjusting links, and the two adjusting links are symmetrically distributed on both sides of the longitudinal arm; the two ends of the adjusting link are movably connected to the seat support and the swing arm respectively. The seat support is fixedly connected to the main frame.

3. The rear swing structure of an electric tricycle according to claim 2, characterized in that: Each group of shock absorbers includes a shock spring and a hydraulic shock absorber cylinder. The shock springs and hydraulic shock absorber cylinders of the two groups of shock absorbers are arranged in a line; the hydraulic shock absorber cylinder is located outside the shock spring; the upper ends of the shock spring and the hydraulic shock absorber cylinder are hinged to the swing arm.

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