A multi-stage adjustable suspension fork device

Abstract

The utility model discloses a kind of multi-section adjustable shock-absorbing front fork devices, belong to bicycle front fork technical field.A kind of multi-section adjustable shock-absorbing front fork device, comprising: the buffer cylinder with buffer cavity being internally provided, the buffer cylinder bottom is fixedly connected with support sleeve;Buffer rod, slidingly connected on support sleeve, and the buffer rod is fixedly connected with damping buffer block, and the damping buffer block is placed in the buffer cavity;First permanent magnet, fixedly connected on damping buffer block;Second permanent magnet, adjustable connection in buffer cavity;The utility model is through the magnetic repulsion of first permanent magnet and second permanent magnet, cooperate the structure of adjusting nut, adjusting screw rod, can flexibly change second permanent magnet position, and further adjust the buffer stroke of magnetic repulsion, realize multi-section accurate adjustment to shock-absorbing buffer force.No matter it is the gentle buffer of flat road, or the powerful shock-absorbing of bumpy mountain, can be adapted, improve the riding comfort under different road conditions.

Description

Technical Field

[0001] This utility model relates to the field of bicycle front fork technology, and in particular to a multi-stage adjustable shock-absorbing front fork device. Background Technology

[0002] In the use of bicycles, electric bicycles and other means of transportation, the shock-absorbing front fork is crucial for improving riding comfort and ensuring the stability of vehicle components.

[0003] Existing suspension forks mostly rely on single or combined cushioning structures such as springs and damping oil. However, they still have certain shortcomings in actual riding: On the one hand, relying solely on springs and damping oil for cushioning has a limited range of adjustment for cushioning force on complex and bumpy roads, making it difficult to accurately adapt to different road conditions, resulting in a poor riding experience and potentially damaging vehicle components due to insufficient cushioning; on the other hand, after long-term use, cushioning components are susceptible to the intrusion of dust and impurities, leading to a decrease in cushioning performance, a shortened lifespan, and an impact on subsequent shock absorption. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to propose a multi-segment adjustable shock-absorbing fork device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-stage adjustable shock-absorbing fork device, comprising:

[0007] A buffer cylinder with an internal buffer cavity, and a support sleeve is fixedly connected to the bottom of the buffer cylinder;

[0008] A buffer rod is slidably connected to a support sleeve, and a damping buffer block is fixedly connected to the buffer rod. The damping buffer block is placed in the buffer cavity, and the side wall of the damping buffer block is in contact with the inner side wall of the buffer cavity.

[0009] The first permanent magnet is fixedly connected to the damping buffer block;

[0010] The second permanent magnet is adjustablely connected in the buffer cavity, and the second permanent magnet is located directly above the first permanent magnet.

[0011] Preferably, the first permanent magnet and the second permanent magnet have the same magnetic poles. When the damping buffer block pushes the first permanent magnet closer to the second permanent magnet, the second permanent magnet pushes the first permanent magnet down under the magnetic repulsion.

[0012] Preferably, an adjusting nut is rotatably connected to the top of the buffer cylinder, an adjusting screw is connected to the buffer cylinder, the adjusting screw is fixedly connected to the second permanent magnet, and the adjusting nut is threadedly connected to the adjusting screw.

[0013] Preferably, a spring is fixedly connected to the damping buffer block, and the end of the spring away from the damping buffer block is fixedly connected to the inner top wall of the buffer cavity.

[0014] Furthermore, a tension spring is fixedly connected to the bottom of the damping buffer block, and the end of the tension spring away from the damping buffer block is fixedly connected to the support sleeve.

[0015] Preferably, a dustproof rubber sleeve is fixedly connected to the bottom of the support sleeve, and the dustproof rubber sleeve is in contact with the side wall of the buffer rod.

[0016] Preferably, the thickness ratio of the first permanent magnet to the second permanent magnet is 1:2.

[0017] Furthermore, a limiting plate is fixedly connected to the top of the adjusting screw.

[0018] Compared with the prior art, this utility model provides a multi-stage adjustable shock-absorbing fork device, which has the following beneficial effects:

[0019] 1. This utility model utilizes the magnetic repulsion between the first and second permanent magnets, along with the structure of the adjusting nut and adjusting screw, to flexibly change the position of the second permanent magnet, thereby adjusting the buffer stroke due to magnetic repulsion and achieving multi-stage precise adjustment of the shock absorption force. It can adapt to both gentle cushioning on flat roads and powerful shock absorption on bumpy mountain terrain, improving riding comfort under different road conditions.

[0020] 2. The dustproof rubber sleeve set at the bottom of the support sleeve of this utility model fits tightly against the side wall of the buffer rod, which can effectively prevent dust and impurities from entering the buffer cavity, protect the internal buffer structure, maintain stable buffer performance, extend the service life of the device, and reduce the frequency and cost of maintenance caused by dust intrusion. Attached Figure Description

[0021] Figure 1 This utility model presents a structural schematic diagram of a multi-segment adjustable shock-absorbing fork device. Figure 1 ;

[0022] Figure 2 This utility model presents a structural schematic diagram of a multi-segment adjustable shock-absorbing fork device. Figure 2 ;

[0023] Figure 3 This is a cross-sectional view of a multi-segment adjustable shock-absorbing fork device proposed in this utility model.

[0024] Figure 4 This utility model proposes a multi-segment adjustable shock-absorbing front fork device. Figure 3 Enlarged view of section A in the middle;

[0025] Figure 5 This utility model proposes a multi-segment adjustable shock-absorbing front fork device. Figure 3 Enlarged view of section B.

[0026] In the diagram: 1. Buffer cylinder; 101. Buffer chamber; 1011. Spring; 2. Buffer rod; 3. Adjusting screw; 301. Limiting plate; 302. Second permanent magnet; 4. Support sleeve; 401. Dustproof rubber sleeve; 5. Adjusting nut; 6. Damping buffer block; 601. First permanent magnet; 602. Tension spring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example 1:

[0029] Reference Figures 1-5 A multi-stage adjustable shock-absorbing fork device, comprising:

[0030] A buffer cylinder 1 with an internal buffer cavity 101 is provided, and a support sleeve 4 is fixedly connected to the bottom of the buffer cylinder 1.

[0031] The buffer rod 2 is slidably connected to the support sleeve 4, and a damping buffer block 6 is fixedly connected to the buffer rod 2. The damping buffer block 6 is placed in the buffer cavity 101, and the side wall of the damping buffer block 6 is in contact with the inner side wall of the buffer cavity 101.

[0032] The first permanent magnet 601 is fixedly connected to the damping buffer block 6;

[0033] The second permanent magnet 302 is adjustablely connected in the buffer cavity 101, and the second permanent magnet 302 is located directly above the first permanent magnet 601.

[0034] The first permanent magnet 601 and the second permanent magnet 302 have the same magnetic poles. When the damping buffer block 6 pushes the first permanent magnet 601 close to the second permanent magnet 302, the second permanent magnet 302 pushes the first permanent magnet 601 down under the magnetic repulsion.

[0035] An adjusting nut 5 is rotatably connected to the top of the buffer cylinder 1, and an adjusting screw 3 is connected to the buffer cylinder 1. The adjusting screw 3 is fixedly connected to the second permanent magnet 302, and the adjusting nut 5 is threadedly connected to the adjusting screw 3.

[0036] A spring 1011 is fixedly connected to the damping buffer block 6, and the end of the spring 1011 away from the damping buffer block 6 is fixedly connected to the inner top wall of the buffer cavity 101.

[0037] Reference Figures 1-5 When encountering bumpy road sections, the buffer rod 2 pushes the damping buffer block 6 to slide upward, thereby pushing the buffer medium in the buffer cavity 101, which can effectively achieve a buffering effect. At the same time, the sliding of the damping buffer block 6 will also push the first permanent magnet 601 to slide upward. When the first permanent magnet 601 slides upward a certain distance, the first permanent magnet 601 will be subjected to the magnetic repulsive force of the second permanent magnet 302. At this time, under the downward push of the opposite force, the buffering force on the damping buffer block 6 will increase.

[0038] A tension spring 602 is fixedly connected to the bottom of the damping buffer block 6, and the end of the tension spring 602 away from the damping buffer block 6 is fixedly connected to the support sleeve 4.

[0039] Reference Figures 3-5 When the bumps disappear, under the force of spring 1011 and tension spring 602, the damping buffer block 6 will quickly slide down to reset, which in turn will push the buffer rod 2 to slide down to reset again.

[0040] Reference Figure 5 By means of the tension spring 602 set on the damping buffer block 6, it is possible to quickly pull the damping buffer block 6 to reset when it is reset.

[0041] Reference Figures 3-5 When it is necessary to adjust the damping buffer force, the operator can use a wrench to turn the adjusting nut 5 on the top of the buffer cylinder 1. At this time, the adjusting nut 5 will drive the adjusting screw 3 connected to it to move down, thereby pushing the second permanent magnet 302, which is fixedly connected to the adjusting screw 3, to move down. After the second permanent magnet 302 moves down a certain distance, it will shorten the repulsive buffer stroke on the first permanent magnet 601, thereby improving the shock absorption buffer force.

[0042] A dustproof rubber sleeve 401 is fixedly connected to the bottom of the support sleeve 4, and the dustproof rubber sleeve 401 is attached to the side wall of the buffer rod 2.

[0043] Reference Figure 3 , Figure 5 The dustproof rubber sleeve 401 provided on the support sleeve 4 is in close contact with the side wall of the buffer rod 2, thereby preventing dust from entering the buffer cavity 101 through the connection between the buffer rod 2 and the support sleeve 4, thus ensuring the buffering effect of the buffer cavity 101.

[0044] The thickness ratio of the first permanent magnet 601 to the second permanent magnet 302 is 1:2.

[0045] The top of the adjusting screw 3 is fixedly connected to the limiting plate 301.

[0046] Reference Figure 2 By adjusting the limiting plate 301 set at the top of the adjusting screw 3, it is possible to effectively prevent the adjusting screw 3 from being over-adjusted and sliding into the buffer cylinder 1.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-stage adjustable shock-absorbing fork device, characterized in that, include: A buffer cylinder (1) with a buffer cavity (101) inside is provided, and a support sleeve (4) is fixedly connected to the bottom of the buffer cylinder (1); A buffer rod (2) is slidably connected to a support sleeve (4), and a damping buffer block (6) is fixedly connected to the buffer rod (2). The damping buffer block (6) is placed in the buffer cavity (101), and the side wall of the damping buffer block (6) is in contact with the inner side wall of the buffer cavity (101). The first permanent magnet (601) is fixedly connected to the damping buffer block (6); The second permanent magnet (302) is adjustablely connected in the buffer cavity (101), and the second permanent magnet (302) is located directly above the first permanent magnet (601).

2. The multi-segment adjustable shock-absorbing fork device according to claim 1, characterized in that, The first permanent magnet (601) and the second permanent magnet (302) have the same magnetic poles. When the damping buffer block (6) pushes the first permanent magnet (601) closer to the second permanent magnet (302), the second permanent magnet (302) pushes the first permanent magnet (601) down under the magnetic repulsion.

3. The multi-segment adjustable shock-absorbing fork device according to claim 1, characterized in that, The top of the buffer cylinder (1) is rotatably connected to an adjusting nut (5), and an adjusting screw (3) is connected to the buffer cylinder (1). The adjusting screw (3) is fixedly connected to the second permanent magnet (302), and the adjusting nut (5) is threadedly connected to the adjusting screw (3).

4. The multi-segment adjustable shock-absorbing fork device according to claim 1, characterized in that, A spring (1011) is fixedly connected to the damping buffer block (6), and one end of the spring (1011) away from the damping buffer block (6) is fixedly connected to the inner top wall of the buffer cavity (101).

5. A multi-segment adjustable shock-absorbing fork device according to claim 4, characterized in that, A tension spring (602) is fixedly connected to the bottom of the damping buffer block (6), and the end of the tension spring (602) away from the damping buffer block (6) is fixedly connected to the support sleeve (4).

6. The multi-segment adjustable shock-absorbing fork device according to claim 1, characterized in that, The bottom of the support sleeve (4) is fixedly connected to a dustproof rubber sleeve (401), which is in contact with the side wall of the buffer rod (2).

7. A multi-segment adjustable shock-absorbing fork device according to claim 1, characterized in that, The thickness ratio of the first permanent magnet (601) and the second permanent magnet (302) is 1:

2.

8. A multi-segment adjustable shock-absorbing fork device according to claim 3, characterized in that, The top of the adjusting screw (3) is fixedly connected to a limiting plate (301).

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