Shock-proof device for front fork bowl group

Abstract

The utility model relates to the technical field of bicycle accessories, and discloses a front fork bowl group shock-absorbing device, which is used for providing shock absorption for a front fork of a bicycle or an electric bicycle, and comprises an oil cylinder barrel sleeved outside the front fork, and a piston slidably mounted in the oil cylinder barrel; the piston comprises a piston part and a supporting part; the bowl sleeve piece is arranged outside the oil cylinder barrel in a sleeving mode, and a bearing is arranged between the bowl sleeve piece and the oil cylinder barrel; the dustproof rubber sleeve is arranged between the lower end face of the bowl sleeve piece and the supporting part of the piston; the device has the advantages of being simple in structure, convenient to install and good in damping effect.

Description

Technical Field

[0001] This utility model relates to the field of bicycle accessories technology, and in particular to a front fork headset shock absorption device for providing shock absorption function for bicycles or electric bicycles. Background Technology

[0002] Bicycles and e-bikes are widely used modes of transportation, and their front forks are key components connecting the handlebars, front wheel, and frame, providing steering and support. However, during riding, impacts and vibrations from the road surface are directly transmitted to the rider through the front fork, resulting in a strong sense of bumpiness, decreased handling stability, increased fatigue, and even physical discomfort or injury, seriously affecting comfort and safety. This problem is particularly pronounced when riding on poor road conditions or at high speeds, and the need for shock absorption is even more urgent for e-bikes due to their greater weight, higher speed potential, and potentially increased unsprung mass (such as in-wheel motors).

[0003] In existing technology, basic front forks (rigid front forks) have no shock absorption function at all, resulting in extremely poor comfort. On the other hand, various shock-absorbing front forks developed to improve comfort (such as spring forks, oil spring forks, and air forks) generally have significant drawbacks, such as complex structures involving a large number of precision components (such as dampers, springs, seals, and adjustment mechanisms), leading to difficulties in production and assembly, high costs, cumbersome maintenance (such as requiring professional maintenance), and increased weight and size.

[0004] Therefore, existing bicycle and electric bicycle front forks have significant shortcomings in shock absorption, and there is an urgent need for a new front fork shock absorption technology that can effectively solve the above-mentioned comprehensive problems. Utility Model Content

[0005] Based on the above, the purpose of this utility model is to provide a front fork headset shock absorption device, which has the characteristics of simple structure, convenient installation and good shock absorption effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A headset shock absorber for providing shock absorption for the front fork of a bicycle or electric bicycle, comprising:

[0008] A hydraulic cylinder is fitted onto the outside of the fork, and a piston is slidably mounted inside the hydraulic cylinder; the piston includes a plug portion and a support portion; a cup sleeve is fitted onto the outside of the hydraulic cylinder, and a bearing is provided between the cup sleeve and the hydraulic cylinder; a dustproof rubber sleeve is provided between the lower end face of the cup sleeve and the support portion of the piston.

[0009] Preferably, a first groove is provided at the bottom of the inner wall of the cylinder, and a first oil seal is provided between the first groove and the piston.

[0010] Preferably, a second groove is provided on the piston plug portion, and a second oil seal is provided between the second groove and the inner wall of the cylinder.

[0011] Preferably, the piston has an oil injection hole in the plug portion.

[0012] Preferably, the top of the cylinder barrel is provided with an exhaust port.

[0013] Preferably, the bottom surface of the piston support portion contacts the fork.

[0014] Preferably, the bottom of the cylinder barrel is also provided with a flange to support the bearing.

[0015] Preferably, the outer periphery of the dustproof rubber sleeve is serrated.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] (1) The structure of this technical solution is simple. This device is set between the front fork and the frame. Shock absorption is achieved by the cooperation of components such as cylinder, piston, and bearing. When the vehicle encounters bumps, the front fork can effectively buffer and absorb shock, improving the comfort and stability of riding or driving. This device can also effectively ensure the sealing of the cylinder by setting the first oil seal and the second oil seal, preventing oil leakage.

[0018] (2) This technical solution can prevent external dust and other impurities from entering the device by setting a dustproof rubber sleeve, so as to protect the internal components; and the bearing assists the front fork to rotate flexibly relative to the frame; the top of the cylinder is provided with an exhaust port to balance the air pressure inside the cylinder and ensure that the shock absorption process is stable and smooth. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0020] Figure 1 This is an overall structural diagram of the front fork headset shock absorber of this utility model;

[0021] Figure 2 This is a structural cross-sectional view of the front fork headset shock absorber of this utility model;

[0022] Figure 3 This is a piston structure diagram of the front fork headset shock absorber of this utility model;

[0023] Figure 4 This is an exploded view of the front fork headset shock absorber of this utility model;

[0024] Figure 5 This is a schematic diagram of the front fork headset shock absorber in use according to the present invention;

[0025] Figure 6 This is one of the exploded views of the front fork headset shock absorber of this utility model in its operating state;

[0026] Figure 7 This is the second exploded view of the front fork headset shock absorber of this utility model in its operating state.

[0027] The attached diagram is labeled as follows:

[0028] 100. Front fork headset shock absorption device

[0029] 1. Cylinder barrel; 11. First groove; 12. Flange; 13. Exhaust port;

[0030] 2. Piston; 21. Plug; 211. Second groove; 22. Support; 23. Oil injection hole;

[0031] 3. Bowl set;

[0032] 4. Bearings;

[0033] 5. Dustproof rubber sleeve;

[0034] 6. First oil seal;

[0035] 7. Second oil seal;

[0036] 8. Front fork;

[0037] 9. Frame; 91. Tube sleeve. Detailed Implementation

[0038] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0042] A preferred embodiment of this application provides a front fork headset shock absorber 100, which is applied in the field of bicycles or electric bicycles, such as... Figure 5-7 As shown, the headset shock absorber 100 is mounted on the front fork 8 and located within the sleeve 91 of the frame 9. Its function is to provide shock absorption for the front fork 8 of a bicycle or electric bicycle. Its structure is described in detail below:

[0043] like Figures 1-4As shown, a front fork headset shock absorption device 100 is used to provide shock absorption for the front fork 8 of a bicycle or electric bicycle. It includes a cylinder 1, a headset assembly 3, and a dustproof rubber sleeve 5. The cylinder 1 is sleeved on the outside of the front fork 8, and a piston 2 is slidably installed inside the cylinder 1. The piston 2 includes a plug portion 21 and a support portion 22. The headset assembly 3 is sleeved on the outside of the cylinder 1, and a bearing 4 is provided between the headset assembly 3 and the cylinder 1. In actual application, the headset assembly 3 contacts the tube sleeve 91 of the frame 9. With this arrangement, the bearing 4 can assist the front fork 8 to rotate flexibly relative to the frame 9. The dustproof rubber sleeve 5 is provided between the lower end face of the headset assembly 3 and the support portion 22 of the piston 2. By providing the dustproof rubber sleeve 5, external dust and other impurities can be prevented from entering the device to protect the internal components. This application incorporates this device between the front fork 8 and the frame 9, achieving shock absorption solely through the cooperation of components such as the cylinder 1, piston 2, and bearing 4. This allows the front fork 8 to effectively cushion and absorb shocks when encountering bumps during riding, improving comfort and stability. Specifically, as... Figure 2 As shown, a first groove is provided at the bottom of the inner wall of the cylinder, and a first oil seal is provided between the first groove and the piston.

[0044] Specifically, such as Figure 2 As shown, a first groove 11 is provided at the bottom of the inner wall of the cylinder 1, and a first oil seal 6 is provided between the first groove 11 and the piston 2.

[0045] Specifically, such as Figure 2 As shown, a second groove 211 is provided on the plug portion 21 of the piston 2, and a second oil seal 7 is provided between the second groove 211 and the inner wall of the cylinder 1. This device also effectively ensures the sealing performance of the cylinder and prevents oil leakage by providing a first oil seal 6 and a second oil seal 7.

[0046] Specifically, the piston 2 has an oil injection hole 23 on its plug part 21. When working, the oil injection hole 23 is opened first, and oil is injected into the cylinder 1 through the oil injection port. When encountering bumps during driving or riding, the oil generates pressure to push the piston 2 open and transmits the buffer force to the front fork 8.

[0047] Specifically, the top of the cylinder 1 is provided with an exhaust port 13; its function is to remove excess air or air bubbles inside the cylinder 1, balance the air pressure inside the cylinder, and ensure a stable and smooth shock absorption process.

[0048] Specifically, such as Figure 4 As shown, the bottom surface of the support portion 22 of the piston 2 is in contact with the fork 8.

[0049] Specifically, the bottom of the cylinder barrel 1 is also provided with a flange 12 to support the bearing 4.

[0050] Specifically, the outer periphery of the dustproof rubber sleeve 5 is serrated to prevent external dust and other impurities from entering the device and to protect the internal components.

[0051] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A front fork headset shock absorption device for providing shock absorption for the front fork of a bicycle or electric bicycle, characterized in that, include: A hydraulic cylinder is fitted onto the outside of the front fork, and a piston is slidably mounted inside the hydraulic cylinder. The piston includes a plug portion and a support portion; A cup assembly is fitted onto the outside of the cylinder barrel, and a bearing is provided between the cup assembly and the cylinder barrel; A dustproof rubber sleeve is provided between the lower end face of the bowl assembly and the support portion of the piston.

2. The front fork headset shock absorption device according to claim 1, characterized in that, A first groove is provided at the bottom of the inner wall of the cylinder, and a first oil seal is provided between the first groove and the piston.

3. The front fork headset shock absorption device according to claim 1 or 2, characterized in that, The piston has a second groove on its plug portion, and a second oil seal is provided between the second groove and the inner wall of the cylinder.

4. The front fork headset shock absorption device according to claim 1, characterized in that, The piston has an oil injection hole in its plug portion.

5. The front fork headset shock absorption device according to claim 1, characterized in that, The top of the cylinder barrel is provided with an exhaust port.

6. The front fork headset shock absorber according to any one of claims 1-2 and 4-5, characterized in that, The bottom surface of the piston's support portion contacts the fork.

7. The front fork headset shock absorber according to any one of claims 1-2 and 4-5, characterized in that, The bottom of the cylinder barrel is also provided with a flange to support the bearing.

8. The front fork headset shock absorber according to any one of claims 1-2 and 4-5, characterized in that, The outer periphery of the dustproof rubber sleeve is serrated.

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