Damping suspension structure for vehicle

Abstract

The utility model relates to a damping suspension structure for a vehicle. Comprising a frame upper cross beam installed above the rear portion of a frame body, an upper cross beam base installed on the frame upper cross beam, a frame lower cross beam installed below the rear portion of the frame body, a lower cross beam base installed on the frame lower cross beam, a bottom fork connecting cross beam installed on the front portion of a rear bottom fork and a bottom fork base. A first rocker arm and a second rocker arm are further included, the upper end of the first rocker arm is hinged to the bottom fork base, the lower end of the first rocker arm is hinged to the rear end of the second rocker arm, and the front end of the second rocker arm is hinged to the lower cross beam base; the upper end of the shock absorber is hinged to the upper beam base, and the lower end of the shock absorber is hinged to the middle of the first rocker arm. The damping suspension structure for the vehicle has the advantages of being compact in structure and simple and stable in action, is easy to install and maintain on a vehicle body, and improves the riding effect of the vehicle.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric motorcycles, and in particular relates to a shock-absorbing suspension structure for a vehicle. Background Art

[0002] With the development of technology, the structural design of electric bicycles has also made great progress. Thanks to the technological development of electric motors and batteries, traditional motorcycles based on fuel engines, such as off-road motorcycles, can be transformed into electric motorcycles by replacing the powertrain. Electric motorcycles can also be essentially classified as electric bicycles, and their operating principles and methods are consistent with those of electric bicycles. Electric motorcycles are increasingly popular with people for the fun of off-road riding. Compared with ordinary electric bicycles, electric motorcycles, especially electric off-road motorcycles, have significant structural characteristics due to the need to ride on bumpy outdoor roads. The typical structural characteristic is that the rear wheel is usually installed on the body with a shock-absorbing suspension structure. Such a shock-absorbing suspension structure is conducive to improving the passability of electric motorcycles when riding in the wild and reducing the degree of bumps during riding. It can be said that the shock-absorbing suspension structure is one of the important configurations of electric motorcycles.

[0003] The shock-absorbing suspension structure not only needs to meet the basic shock-absorbing suspension functions, but also usually needs to have the characteristics of compact structure, simple and stable operation, easy installation and maintenance on the vehicle body. The vehicle shock-absorbing suspension structure in the existing technology is difficult to meet the above requirements, and its structure needs to be developed and designed. Utility Model Content

[0004] The utility model aims to provide a shock-absorbing suspension structure for a vehicle, which has the characteristics of compact structure, simple and stable action, is easy to install and maintain on the vehicle body, and improves the riding effect of the vehicle.

[0005] The technical solution adopted by the utility model is: a shock-absorbing suspension structure for a vehicle, comprising an upper crossbeam of a frame installed above the rear part of a frame body and an upper crossbeam base installed on the upper crossbeam of the frame, a lower crossbeam of a frame installed below the rear part of the frame body and a lower crossbeam base installed on the lower crossbeam of the frame, a fork connecting crossbeam installed at the front part of a rear fork and a fork base; also comprising a first rocker arm and a second rocker arm, the upper end of the first rocker arm is hingedly connected to the fork base, the lower end of the first rocker arm is hingedly connected to the rear end of the second rocker arm, and the front end of the second rocker arm is hingedly connected to the lower crossbeam base; also comprising a shock absorber, the upper end of which is hingedly connected to the upper crossbeam base, and the lower end is hingedly connected to the middle part of the first rocker arm.

[0006] Preferably, a grooved support beam with a groove in the middle is installed below the front part of the rear flat fork and the front part of the flat fork connecting cross beam, and the middle part of the second rocker arm is located in the groove of the grooved support beam.

[0007] Preferably, the fork connecting crossbeam and the fork base are an integrally formed structure, and the end of the fork connecting crossbeam is fixed to the rear fork by welding or bolting; the grooved support beam is integrally formed, and its end is fixed to the rear fork by welding or bolting.

[0008] Preferably, the upper crossbeam of the frame and the upper crossbeam base are an integrally formed structure, and the end of the upper crossbeam of the frame is fixed to the frame body by welding or bolting; the lower crossbeam of the frame and the lower crossbeam base are an integrally formed structure, and the end of the lower crossbeam of the frame is fixed to the frame body by welding or bolting.

[0009] Preferably, the shock absorber is a hydraulic spring shock absorber.

[0010] The advantages and positive effects of the utility model are:

[0011] The utility model provides a shock-absorbing suspension structure for a vehicle with a reasonable structural design, which is applied to an electric motorcycle to play the effect of shock-absorbing suspension. The upper crossbeam and the upper crossbeam base of the shock-absorbing suspension structure are integrated with the frame body, and the horizontal fork connecting crossbeam is integrated with the rear horizontal fork. The overall structure is compact and stable, easy to install on the vehicle body, and easy to maintain. When the shock absorber is subjected to bumps during riding, the shock absorber is forced to shrink and expand, and the postures of the first rocker arm and the second rocker arm change accordingly, so that the operation is stable and the action is simple. Furthermore, the shock absorber of the shock-absorbing suspension structure is located in the space above the frame body, above the first rocker arm and the second rocker arm, and in front of the rear wheel, so that the shock absorber is well protected. During outdoor riding, the shock absorber can be less affected by bumps and collisions. The shock-absorbing suspension structure for a vehicle has the shock-absorbing effect of an ideal shock absorber, improves the driving comfort of the vehicle, and can prevent the bottoming problem caused by large impacts, thereby improving the safety and stability of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the external structure of the utility model when it is installed on the frame body, from an upper perspective;

[0013] Figure 2 It is a schematic diagram of the internal structure of the utility model when it is installed on the frame body;

[0014] Figure 3 It is a schematic diagram of the external structure of the utility model when it is installed on the frame body, from a bottom viewing angle.

[0015] In the figure:

[0016] 1. Frame body; 2. Battery protection frame; 3. Rear fork; 4. Fork connecting beam; 5. Fork base; 6. First rocker arm; 7. Shock absorber; 8. Upper beam of frame; 9. Upper beam base; 10. Support beam with groove; 11. Second rocker arm; 12. Lower beam of frame; 13. Lower beam base. DETAILED DESCRIPTION

[0017] In order to further understand the content, features and effects of the present invention, the following embodiments are given to explain in detail.

[0018] See also Figure 1 The vehicle shock-absorbing suspension structure of the utility model is installed between the frame body 1 and the rear fork 3. Figure 1 As shown in FIG. 1 , a battery protection frame 2 is provided at the lower part of the frame body 1, and the battery assembly is installed inside the battery protection frame 2 to play a protective role during riding. The rear fork 3 is hingedly connected to the frame body 1. Specifically, as shown in FIG. Figure 1 As shown in the figure, the front end of the rear fork 3 is hingedly connected to the rear lower part of the frame body 1, and the rear wheel is installed on the rear fork 3. Therefore, during riding, the rear fork 3 and its rear wheel can swing up and down with the hinge axis with the frame body 1 as the center.

[0019] See also Figure 2 and Figure 3

[0020] The vehicle shock-absorbing suspension structure includes an upper frame beam 8 installed above the rear of the frame body 1 and an upper frame beam base 9 installed in the middle of the upper frame beam 8, a lower frame beam 12 installed below the rear of the frame body 1 and a lower frame beam base 13 installed in the middle of the lower frame beam 12, a fork connecting beam 4 installed in front of the rear fork 3 and a fork base 5 installed in the middle of the fork connecting beam 4.

[0021] In the present embodiment, the fork connecting cross beam 4 and the fork base 5 are an integrally formed structure, and the end of the fork connecting cross beam 4 is fixed to the rear fork 3 by welding or bolting. Specifically, the fork connecting cross beam 4 and the fork base 5 can be an integral casting, or can be formed by milling in a machining center.

[0022] In this embodiment, the upper cross beam 8 and the upper cross beam base 9 of the frame are an integrally formed structure, and the end of the upper cross beam 8 of the frame is fixed to the frame body 1 by welding or bolting; the lower cross beam 12 of the frame and the lower cross beam base 13 are an integrally formed structure, and the end of the lower cross beam 12 of the frame is fixed to the frame body 1 by welding or bolting. Specifically, the upper cross beam 8 and the upper cross beam base 9 of the frame can be an integral casting, or can be formed by milling in a machining center, and the lower cross beam 12 and the lower cross beam base 13 of the frame can be an integral casting, or can be formed by milling in a machining center.

[0023] It also includes a first rocker arm 6 and a second rocker arm 11. The upper end of the first rocker arm 6 is hingedly connected to the flat fork base 5, the lower end of the first rocker arm 6 is hingedly connected to the rear end of the second rocker arm 11, and the front end of the second rocker arm 11 is hingedly connected to the lower cross beam base 13.

[0024] As shown in the figure, the upper end of the first rocker arm 6 extends rearward to form a connecting portion, which is located in the slot on the flat fork base 5 and is connected by a pin. The lower end of the first rocker arm 6 is located in the slot at the rear end of the second rocker arm 11 and is connected by a pin. The rear end of the lower cross beam base 13 is located in the slot at the front end of the second rocker arm 11 and is connected by a pin.

[0025] It also includes a shock absorber 7, the upper end of which is hingedly connected to the upper crossbeam base 9, and the lower end of which is hingedly connected to the middle part of the first rocker arm 6. Figure 2 As shown in , the upper end of the shock absorber 7 is located in the notch in the middle of the upper crossbeam base 9 and connected by a pin shaft, and the lower end of the shock absorber 7 is located in the notch in the middle of the first rocker arm 6 and connected by a pin shaft. In this embodiment, the shock absorber 7 is a hydraulic spring shock absorber, which structurally includes a hydraulic component and a spring. The hydraulic spring shock absorber is an existing component, which is obtained through purchase, and its structure and function are not described in detail. Of course, it is conceivable that other structural forms of shock absorbing components can also be used.

[0026] A grooved support beam 10 with a groove in the middle is also installed at the front of the rear fork 3 and below the front of the fork connecting cross beam 4, and the middle of the second rocker arm 11 is located in the groove of the grooved support beam 10. In this embodiment, the grooved support beam 10 is integrally formed, and its end is fixed to the rear fork 3 by welding or bolt connection. Specifically, the grooved support beam 10 can be an integral casting, or formed by milling in a machining center.

[0027] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A shock-absorbing suspension structure for a vehicle, characterized by: The invention comprises an upper crossbeam (8) mounted on the upper rear part of a vehicle frame body (1) and an upper crossbeam base (9) mounted on the upper crossbeam (8), a lower crossbeam (12) mounted on the lower rear part of the vehicle frame body (1) and a lower crossbeam base (13) mounted on the lower crossbeam (12), a fork connecting crossbeam (4) mounted on the front part of a rear fork (3) and a fork base (5); a first rocker arm (6) and a second rocker arm (11), the upper end of the first rocker arm (6) being hingedly connected to the fork base (5), the lower end of the first rocker arm (6) being hingedly connected to the rear end of the second rocker arm (11), and the front end of the second rocker arm (11) being hingedly connected to the lower crossbeam base (13); and a shock absorber (7), the upper end of which is hingedly connected to the upper crossbeam base (9) and the lower end of which is hingedly connected to the middle part of the first rocker arm (6).

2. The shock-absorbing suspension structure for a vehicle as claimed in claim 1, characterized in that: A grooved support beam (10) with a groove in the middle is also installed below the front part of the rear flat fork (3) and the front part of the flat fork connecting cross beam (4), and the middle part of the second rocker arm (11) is located in the groove of the grooved support beam (10).

3. The shock-absorbing suspension structure for a vehicle as claimed in claim 2, characterized in that: The fork connecting cross beam (4) and the fork base (5) are an integrally formed structure, and the end of the fork connecting cross beam (4) is fixed to the rear fork (3) by welding or bolt connection; the grooved support beam (10) is integrally formed, and the end of the grooved support beam (10) is fixed to the rear fork (3) by welding or bolt connection.

4. The shock-absorbing suspension structure for a vehicle as claimed in claim 3, characterized in that: The upper crossbeam (8) and the upper crossbeam base (9) of the frame are an integrally formed structure, and the end of the upper crossbeam (8) of the frame is fixed to the frame body (1) by welding or bolt connection; the lower crossbeam (12) of the frame and the lower crossbeam base (13) are an integrally formed structure, and the end of the lower crossbeam (12) of the frame is fixed to the frame body (1) by welding or bolt connection.

5. The vehicle shock absorbing suspension structure according to claim 4, characterized in that: The shock absorber (7) is a hydraulic spring type shock absorber.

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