Rear suspension system of electro-tricycle

Abstract

The utility model discloses an electric tricycle rear suspension system which comprises a frame (1) and a rear axle (7) connected to the right side of the frame (1), horseshoe hubs (8) are symmetrically connected to the two ends of the rear axle (7), the upper portions of the horseshoe hubs (8) are connected with the frame (1) through spiral springs (3), the rear sides of the horseshoe hubs (8) are connected with the frame (1) through composite shock absorbers (6), and supporting arms (12) are connected to the bottoms of the horseshoe hubs (8). And the front end of the supporting arm (12) is connected with the frame (1). The shock absorber is light in overall weight, is more beneficial to shock absorption control, and can effectively improve the maneuvering performance of a vehicle.

Description

Technical Field

[0001] The utility model belongs to the technical field of rear suspension systems, and in particular relates to a rear suspension system for an electric tricycle. Background Art

[0002] The rear suspension system of existing electric tricycles mostly adopts a leaf spring rear suspension system. Although the leaf spring suspension system has a simple structure, it is too bulky. Moreover, during the driving of the vehicle, each steel plate will move up and down, thereby generating friction, and this friction will interact with each other. In addition, the deformation degree of different steel plates is different, so it is difficult to adjust the movement trajectory of the leaf spring, resulting in poor comfort in the use of the vehicle. Utility Model Content

[0003] The utility model aims to provide a rear suspension system for an electric tricycle, which has a lighter overall weight, is more conducive to shock absorption control, and can effectively improve the handling performance of the vehicle.

[0004] To achieve the above-mentioned purpose, the rear suspension system of an electric tricycle of the utility model includes a frame and a rear axle connected to the right side of the frame, the two ends of the rear axle are symmetrically connected with horseshoe hinges, the upper side of the horseshoe hinge is connected to the frame through a coil spring, the rear side of the horseshoe hinge is connected to the frame through a composite shock absorber, the bottom of the horseshoe hinge is connected to a support arm, and the front end of the support arm is connected to the frame.

[0005] As a further solution of the utility model: the coil spring is arranged vertically, the top end is connected to the frame through a spring seat, and the bottom end is connected to the horseshoe pivot through a spring cover plate, and a spring rubber sleeve is provided on the spring cover plate inside the coil spring.

[0006] As a further solution of the utility model: the top end of the composite shock-absorbing is hinged to the frame through a shock-absorbing lifting lug, and the bottom end is hinged to the rear side of the horseshoe pivot through a horseshoe lifting lug.

[0007] As a further solution of the utility model: an articulated seat is provided at the bottom of the frame, and the front end of the supporting arm is connected to the articulated seat.

[0008] As a further solution of the utility model: a reinforcing cross plate is connected to the inner side of the horseshoe pivot on the rear axle, and the reinforcing cross plate is connected to the frame through an adjusting pull rod.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] The coil spring, composite shock absorber and support arm are combined through a horseshoe hinge and cooperate with the adjusting rod to form the rear suspension system. Its shock absorption effect is good both on roads and in the mountains, which is significantly better than the traditional leaf spring rear suspension system. On mountain roads, it can provide a larger axle height difference, so that the loaded wheels can have a larger up and down travel.

[0011] In addition, there will be no internal friction loss between the components, which can provide better shock absorption.

[0012] In addition, the overall weight is also relatively light, which can improve the vehicle's handling on roads and in the mountains; and it can be designed with different diameters and lengths to suit the needs of different models. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic diagram of the structure of the rear suspension system of the electric tricycle.

[0014] Figure 2 It is a partial bottom perspective structural diagram of the rear suspension system of the electric tricycle of the utility model.

[0015] In the figure: 1, frame, 2, spring seat, 3, coil spring, 4, spring cover, 5, spring rubber sleeve, 6, composite shock absorber, 7, rear axle, 8, horseshoe pivot, 9, horseshoe lifting eye, 10, shock absorbing lifting eye, 11, reinforced cross plate, 12, supporting arm, 13, articulated seat, 14, adjusting rod. DETAILED DESCRIPTION

[0016] The utility model will be further described below in conjunction with the accompanying drawings.

[0017] like Figure 1 and Figure 2 As shown, the rear suspension system of the electric tricycle includes a frame 1 and a rear axle 7 connected to the right side of the frame 1, and horseshoe hinges 8 are symmetrically connected to both ends of the rear axle 7. The upper side of the horseshoe hinge 8 is connected to the frame 1 through a coil spring 3, and the rear side of the horseshoe hinge 8 is connected to the frame 1 through a composite shock absorber 6. A support arm 12 is connected to the bottom of the horseshoe hinge 8, and the front end of the support arm 12 is connected to the frame 1.

[0018] The coil spring 3 can reduce road bumps. The coil spring 3 is a buffer element. When the impact force of the road on the wheel is transmitted to the coil spring 3, the coil spring 3 is deformed, absorbing the kinetic energy of the wheel and converting it into the potential energy of the coil spring 3, thereby mitigating the impact of the ground on the vehicle body; the composite shock absorber 6 is to accelerate the attenuation of the vibration of the frame 1 and the vehicle body to improve the driving smoothness (comfort) of the tricycle; the support arm 12 can attenuate the vibration caused by the elastic system, and transmit the reaction force and torque from all directions (longitudinal, vertical or lateral), so that the wheel moves relative to the vehicle body along a certain trajectory, playing a certain guiding role; the horseshoe hub 8 integrates the coil spring 3, the composite shock absorber 6 and the support arm 12 into one, which assists and cooperates with each other to improve the driving comfort of the vehicle.

[0019] In order to maximize the effect of the coil spring 3, the coil spring 3 is further arranged vertically, the top end is connected to the frame 1 through the spring seat 2, and the bottom end is connected to the horseshoe pivot 8 through the spring cover 4. A spring rubber sleeve 5 is provided on the spring cover 4 inside the coil spring 3. The spring seat 2 plays a positioning and fixing role, limiting the horizontal direction of the coil spring 3; the spring cover 4 can fix the spring in the vertical direction; the spring rubber sleeve 5 plays a buffering and shock-absorbing role, and protects the coil spring 3; it can effectively improve the service life and effect of the coil spring 3.

[0020] Further, the top of the composite shock absorber 6 is hinged to the frame 1 through the shock absorbing lug 10, and the bottom is hinged to the rear side of the horseshoe pivot 8 through the horseshoe lug 9. The composite shock absorber 6 can cooperate with the coil spring 3 to provide a good shock absorbing effect and accelerate vibration attenuation.

[0021] In order to attenuate the vibration caused by the coil spring 3 and the composite shock absorber 6, a hinge seat 13 is further provided at the bottom of the frame 1, and the front end of the bracket 12 is connected to the hinge seat 13. The reaction force and torque from all directions can be transmitted, so that the wheel moves relative to the vehicle body along a certain trajectory, which can improve the control performance of the vehicle.

[0022] Furthermore, a reinforcing cross plate 11 is connected to the inner side of the horseshoe pivot 8 on the rear axle 7. The reinforcing cross plate 11 is connected to the frame 1 through an adjusting pull rod 14, which can assist the support arm 12 in attenuating vibration and improve the form comfort of the vehicle.

Claims

1. An electric tricycle rear suspension system, comprising a frame (1) and a rear axle (7) connected to the right side of the frame (1), characterized in that: The rear axle (7) is symmetrically connected with horseshoe hinges (8) at both ends, the upper side of the horseshoe hinge (8) is connected to the vehicle frame (1) via a coil spring (3), the rear side of the horseshoe hinge (8) is connected to the vehicle frame (1) via a composite shock absorber (6), the bottom of the horseshoe hinge (8) is connected with a supporting arm (12), and the front end of the supporting arm (12) is connected to the vehicle frame (1).

2. The rear suspension system of an electric tricycle according to claim 1, characterized in that: The coil spring (3) is arranged vertically, with the top end connected to the vehicle frame (1) via a spring seat (2), and the bottom end connected to the horseshoe pivot (8) via a spring cover plate (4), wherein a spring rubber sleeve (5) is provided on the spring cover plate (4) and located inside the coil spring (3).

3. The rear suspension system of an electric tricycle according to claim 1 or 2, characterized in that: The top end of the composite shock absorber (6) is hinged to the vehicle frame (1) via a shock absorber hanging ear (10), and the bottom end is hinged to the rear side of the horseshoe pivot (8) via a horseshoe hanging ear (9).

4. The rear suspension system of an electric tricycle according to claim 1 or 2, characterized in that: A hinge seat (13) is provided at the bottom of the vehicle frame (1), and the front end of the supporting arm (12) is connected to the hinge seat (13).

5. The rear suspension system of an electric tricycle according to claim 1 or 2, characterized in that: A reinforcing cross plate (11) is connected to the inner side of the horseshoe pivot (8) on the rear axle (7), and the reinforcing cross plate (11) is connected to the vehicle frame (1) via an adjusting pull rod (14).

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