A front fork shock absorber for a bicycle

Abstract

The utility model discloses a trolley front fork shock absorber, including the front fork support, the upper surface fixed connection of front fork support has the locating cylinder, the bottom fixed connection of front fork support has two buffer cylinders, the bottom fixed connection of front fork support has the limit stop, the bottom of limit stop is equipped with two limit holes. The device passes through shock absorber main part and fixed plate and transmits vibration to the front fork support, then utilizes the cooperation of support bent pole and sliding disc, transmits vibration to the buffer spring in buffer cylinder, makes the buffer spring to the impact force and buffers, simultaneously, the two shock absorber main part of fixed plate bottom surface further absorbs and converts impact energy, reduces vibration transmission, because the cooperation of support bent pole and limit hole, the sliding range of sliding disc is limited, prevents the phenomenon of structure damage, and sealing washer ensures the sealing property in buffer cylinder, prevents dust and impurity from entering, and then improved the driving stability and ride comfort of vehicle.

Description

Technical Field

[0001] This utility model relates to the field of tram technology, and in particular to a tram front fork shock absorber. Background Technology

[0002] Electric vehicles, also known as trolleybuses, are pure electric motor vehicles powered by batteries and driven by DC, AC, series-wound, or separately excited electric motors. In recent years, they have become very popular in my country. Domestically, electric vehicles are mainly used for sightseeing, passenger transport, security patrols, and cargo transportation. Electric sightseeing vehicles are mainly used for passenger transport in parks, scenic spots, resorts, universities, hospitals, golf courses, real estate companies, and other places. Electric patrol vehicles are mainly used for security patrols in station squares and densely populated areas. Electric transport vehicles are mainly used in factories, ports, and logistics warehouses. Electric sanitation vehicles are mainly used for cleaning sites, washing roads, and transporting garbage.

[0003] During the operation of an electric bicycle, uneven road surfaces cause the wheels to experience various impacts and vibrations. The suspension system's role is to buffer and absorb these impacts and vibrations, ensuring the vehicle's stability. As a key component of the electric bicycle's front wheel suspension system, the front fork shock absorber not only supports the front wheel but also bears the heavy responsibility of steering and shock absorption. However, when facing complex road conditions, existing front fork shock absorber systems often have significant shortcomings, such as the inability to effectively absorb high-frequency impacts, resulting in poor vehicle stability and severely affecting rider comfort. Therefore, we propose an electric bicycle front fork shock absorber to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a shock absorber for electric vehicle front forks to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A shock absorber for a front fork of an electric vehicle includes a front fork bracket. A positioning cylinder is fixedly connected to the upper surface of the front fork bracket. Two buffer cylinders are fixedly connected to the bottom surface of the front fork bracket. A limit block is fixedly connected to the bottom surface of the front fork bracket. Two limit holes are formed on the bottom surface of the limit block. A support rod is slidably connected inside each of the two limit holes. A fixing plate is fixedly connected to the outer surface of each support rod. Two shock absorber bodies are fixedly connected to the bottom surface of the fixing plate. A buffer spring is provided inside each buffer cylinder. The top end of each buffer spring is fixedly connected to the bottom surface of the front fork bracket. A sliding plate is fixedly connected to the bottom end of each buffer spring, and the sliding plate is slidably connected to the buffer cylinder. The ends of the two support rods away from the limit block are fixedly connected to the bottom surface of the sliding plate. A connecting block is fixedly connected to the bottom end of each shock absorber body.

[0007] In a further embodiment, a reinforcing ring is fixedly connected to the upper surface of the fork bracket, and the inner ring of the reinforcing ring is fixedly connected to the outer surface of the positioning cylinder.

[0008] In a further embodiment, a reinforcing plate is fixedly connected to both the front and back of the limiting block, and the top of each reinforcing plate is fixedly connected to the bottom surface of the fork bracket.

[0009] In a further embodiment, two reinforcing wedges are fixedly connected to the upper surface of the fixing plate, and the sides of the two reinforcing wedges that are close to each other are fixedly connected to the outer surface of the supporting bent rod.

[0010] In a further embodiment, the outer surfaces of the two shock absorber bodies are jointly fixedly connected to a stabilizing plate, and the upper surface of the stabilizing plate is fixedly connected to the bottom surface of the fixing plate.

[0011] In a further embodiment, each of the buffer cylinders is provided with a sealing gasket inside, the outer surface of each sealing gasket is fixedly connected to the inner sidewall of the buffer cylinder, and the inner ring of each sealing gasket is in contact with the outer surface of the supporting bent rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This device transmits vibration to the front fork bracket through the shock absorber body and the fixed plate. Then, the vibration is transmitted to the buffer spring in the buffer cylinder through the cooperation of the support rod and the sliding plate. The buffer spring buffers the impact force. At the same time, the two shock absorber bodies on the bottom of the fixed plate further absorb and convert the impact energy, reducing vibration transmission. Due to the cooperation of the support rod and the limiting hole, the sliding range of the sliding plate is limited to prevent structural damage. The sealing gasket ensures the airtightness of the buffer cylinder, preventing dust and impurities from entering, thereby improving the vehicle's driving stability and ride comfort. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a shock absorber for a tram front fork.

[0015] Figure 2 This is a schematic diagram of the shock absorber cylinder in a tram front fork shock absorber, viewed from below.

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the buffer cylinder in a shock absorber for a tram front fork.

[0017] Figure 4 This is a bottom view schematic diagram of the mounting plate in a shock absorber for a tram front fork.

[0018] In the diagram: 1. Front fork bracket; 2. Positioning cylinder; 3. Reinforcing ring; 4. Buffer cylinder; 5. Limiting block; 6. Reinforcing plate; 7. Supporting bend rod; 8. Fixing plate; 9. Reinforcing wedge block; 10. Shock absorber body; 11. Stabilizing plate; 12. Limiting hole; 13. Sealing gasket; 14. Buffer spring; 15. Sliding disc; 16. Connecting block. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 In this utility model, a shock absorber for a front fork of an electric vehicle includes a front fork bracket 1. A positioning cylinder 2 is fixedly connected to the upper surface of the front fork bracket 1. Two buffer cylinders 4 are fixedly connected to the bottom surface of the front fork bracket 1. A limiting block 5 is fixedly connected to the bottom surface of the front fork bracket 1. Two limiting holes 12 are opened on the bottom surface of the limiting block 5. A support rod 7 is slidably connected inside the two limiting holes 12. A fixing plate 8 is fixedly connected to the outer surface of each support rod 7. Two shock absorber bodies 10 are fixedly connected to the bottom surface of the fixing plate 8. A buffer spring 14 is provided inside each buffer cylinder 4. The top end of each buffer spring 14 is fixedly connected to the bottom surface of the front fork bracket 1. A sliding plate 15 is fixedly connected to the bottom end of each buffer spring 14, and the sliding plate 15 is slidably connected to the buffer cylinder 4. The ends of the two support rods 7 away from the limiting block 5 are fixedly connected to the bottom surface of the sliding plate 15. A connecting block 16 is fixedly connected to the bottom end of each shock absorber body 10.

[0021] A reinforcing ring 3 is fixedly connected to the upper surface of the fork bracket 1. The inner ring of the reinforcing ring 3 is fixedly connected to the outer surface of the positioning cylinder 2. The reinforcing ring 3 can reinforce the positioning cylinder 2. A reinforcing plate 6 is fixedly connected to both the front and back of the limiting block 5. The top of each reinforcing plate 6 is fixedly connected to the bottom surface of the fork bracket 1. The reinforcing plate 6 can reinforce the limiting block 5. Two reinforcing inclined blocks 9 are fixedly connected to the upper surface of the fixing plate 8. The side of the two reinforcing inclined blocks 9 that are close to each other is fixedly connected to the outer surface of the support rod 7. The reinforcing inclined blocks 9 can fix the support rod 7, further enhancing the stability of the support rod 7.

[0022] The outer surfaces of the two shock absorber bodies 10 are fixedly connected to a stabilizing plate 11. The upper surface of the stabilizing plate 11 is fixedly connected to the bottom surface of the fixing plate 8. The stabilizing plate 11 can fix the shock absorber body 10. Each buffer cylinder 4 is provided with a sealing gasket 13 inside. The outer surface of each sealing gasket 13 is fixedly connected to the inner wall of the buffer cylinder 4. The inner ring of each sealing gasket 13 is in contact with the outer surface of the support rod 7. The sealing gasket 13 can prevent dust and impurities from entering the interior of the device, thereby improving the comfort of the vehicle during driving.

[0023] The working principle of this utility model is as follows:

[0024] When the tram travels on uneven roads, the impact force on the wheels is transmitted to the front fork bracket 1 through the shock absorber body 10 and the fixing plate 8. With the cooperation of the support rod 7 and the sliding plate 15, the vibration can be transmitted to the buffer spring 14 in the buffer cylinder 4, and the buffer spring 14 can buffer the impact force. At the same time, the two shock absorber bodies 10 set on the bottom surface of the fixing plate 8 further absorb and convert the impact energy, reducing the transmission of vibration. With the cooperation of the support rod 7 and the limiting hole 12, the sliding range of the sliding plate 15 is further limited to prevent structural damage. The sealing gasket 13 ensures the sealing of the buffer cylinder 4, preventing dust and impurities from entering, thereby improving the driving stability and riding comfort of the vehicle.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A front fork shock absorber for a bicycle, characterized by: The device includes a front fork bracket (1), with a positioning cylinder (2) fixedly connected to the upper surface of the front fork bracket (1), two buffer cylinders (4) fixedly connected to the bottom surface of the front fork bracket (1), a limit block (5) fixedly connected to the bottom surface of the front fork bracket (1), two limit holes (12) opened on the bottom surface of the limit block (5), and a support rod (7) slidably connected inside each of the two limit holes (12). A fixing plate (8) is fixedly connected to the outer surface of each support rod (7), and two damping cylinders are fixedly connected to the bottom surface of the fixing plate (8). The shock absorber body (10) has a buffer spring (14) inside each of the buffer cylinders (4). The top of each buffer spring (14) is fixedly connected to the bottom surface of the fork bracket (1). The bottom of each buffer spring (14) is fixedly connected to a sliding plate (15), and the sliding plate (15) is slidably connected to the buffer cylinder (4). The ends of the two support rods (7) away from the limiting block (5) are fixedly connected to the bottom surface of the sliding plate (15). The bottom of each shock absorber body (10) is fixedly connected to a connecting block (16).

2. The electric vehicle front fork shock absorber of claim 1, wherein: A reinforcing ring (3) is fixedly connected to the upper surface of the fork bracket (1), and the inner ring of the reinforcing ring (3) is fixedly connected to the outer surface of the positioning cylinder (2).

3. The electric vehicle front fork shock absorber of claim 1, wherein: The front and back of the limiting block (5) are both fixedly connected with reinforcing plates (6), and the top of each reinforcing plate (6) is fixedly connected to the bottom surface of the fork bracket (1).

4. The electric vehicle front fork shock absorber of claim 1, wherein: Two reinforcing inclined blocks (9) are fixedly connected to the upper surface of the fixed plate (8), and the two reinforcing inclined blocks (9) are fixedly connected to the outer surface of the supporting bent rod (7) on their side that is close to each other.

5. The electric vehicle front fork shock absorber of claim 1, wherein: The outer surfaces of the two shock absorber bodies (10) are fixedly connected to a stabilizing plate (11), and the upper surface of the stabilizing plate (11) is fixedly connected to the bottom surface of the fixing plate (8).

6. A shock absorber for a tram front fork according to claim 1, characterized in that: Each of the buffer cylinders (4) is provided with a sealing gasket (13) inside. The outer surface of each sealing gasket (13) is fixedly connected to the inner wall of the buffer cylinder (4), and the inner ring of each sealing gasket (13) is in contact with the outer surface of the support rod (7).

Images