A multi-stage shock absorbing suspension fork

Abstract

The utility model relates to front fork damping technology field discloses a multistage damping buffer fork, including first damping assembly, first damping assembly includes first fork shoulder seat, two first stroke pipes, two first fork buckets and the first spring in first fork bucket, first fork shoulder seat and two first stroke pipes integral molding, first stroke pipe and corresponding first fork bucket sliding fit, first stroke pipe, corresponding first fork bucket and first spring cooperation damping, still include second damping assembly, second damping assembly includes two second stroke pipes, two second fork buckets and the second spring in second fork bucket, second stroke pipe is connected with first fork shoulder seat, second stroke pipe and corresponding second fork bucket sliding fit, second fork bucket and first fork bucket detachable connection, second stroke pipe, corresponding second fork bucket and second spring cooperation damping. The utility model can improve the damping sensitivity, improve the comfort of riding.

Description

Technical Field

[0001] This utility model relates to the field of front fork shock absorption technology, specifically to a multi-stage shock absorption and buffer front fork. Background Technology

[0002] The electric vehicle front fork includes a steering shaft, a fork shoulder seat, and two front fork legs. The front fork legs include a travel tube, a fork cassette, a spring, and a fork foot. The steering shaft is connected to the fork shoulder seat, and the two travel tubes are respectively connected to the ends of the fork shoulder seat. The travel tubes and the fork cassette are in sliding fit. The spring is located inside the fork cassette. The fork cassette is connected to the fork foot, and the fork foot is connected to the front wheel.

[0003] When an electric vehicle encounters bumps while riding, the travel tube, fork thimble, and spring work together to absorb the shock. However, when encountering small bumps, because the spring's elastic coefficient is fixed, the spring's deformation is small for small bumps, resulting in limited shock absorption. As a result, the rider can still clearly feel the vibration, affecting riding comfort. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a multi-stage shock absorption and buffer fork to improve shock absorption sensitivity and riding comfort.

[0005] The technical solution adopted by this utility model is as follows: A multi-stage shock-absorbing and buffering fork includes a first shock-absorbing component, which includes a first fork shoulder seat, two first stroke tubes, two first fork barrels, and a first spring located inside the first fork barrel. The first fork shoulder seat and the two first stroke tubes are integrally formed. The first stroke tubes and the corresponding first fork barrels are slidably engaged. The first stroke tubes, the corresponding first fork barrels, and the first spring cooperate to absorb shock. The fork also includes a second shock-absorbing component, which includes two second stroke tubes, two second fork barrels, and a second spring located inside the second fork barrels. The second stroke tubes are connected to the first fork shoulder seat and are slidably engaged with the corresponding second fork barrels. The second fork barrels and the first fork barrels are detachably connected. The second stroke tubes, the corresponding second fork barrels, and the second spring cooperate to absorb shock.

[0006] Explanation: The first fork shoulder is connected to the steering shaft, and both first fork barrels are equipped with fork feet, which are connected to the front wheel.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: The first and second shock absorber components are combined in parallel for shock absorption. The second stroke tube, second fork, and second spring on the same side, as well as the first stroke tube, first fork, and first spring, are combined in series for shock absorption, providing progressive buffering. When the electric vehicle is in motion, when the front wheel encounters fine lines, small bumps, or small jerks on the road, the second stroke tube, second fork, and second spring work together for primary shock absorption. When the front wheel encounters speed bumps or potholes, the second stroke tube, second fork, and second spring work together, while the first stroke tube, first fork, and first spring work together for secondary shock absorption. In primary damping mode, the second spring quickly responds to minor changes in road surface, initially absorbing vibration energy and converting it into the spring's elastic potential energy. This reduces the direct transmission of vibration to the vehicle, allowing riders to experience a smooth and comfortable ride on flat or slightly undulating roads. When encountering larger obstacles such as speed bumps or potholes, secondary damping comes into play. The first and second springs work together to further absorb and disperse vibration energy, preventing significant impact on the electric vehicle and rider from sudden, intense vibrations. This reduces the bumpy feeling and discomfort during riding, improving safety and comfort.

[0008] In a preferred embodiment of the present invention, the second shock absorber assembly further includes a second shoulder seat, which is connected to the first shoulder seat, and two second stroke tubes are respectively connected to the second shoulder seat.

[0009] Beneficial effects: The second fork shoulder seat connects with the first fork shoulder seat, increasing the structural strength of the first fork shoulder seat and making it more stable when bearing the forces from the first and second damping components. Simultaneously, the second fork shoulder seat provides a stable connection base for the two second-stroke tubes, ensuring that they slide synchronously and stably during operation, guaranteeing the consistency and stability of the damping effect of the second damping components. During electric vehicle operation, regardless of the type of bumps encountered, the second fork shoulder seat effectively and evenly transmits the vibration force to the two second-stroke tubes, avoiding problems such as excessive local wear or poor damping effect caused by uneven force distribution.

[0010] In a preferred embodiment of this utility model, the upper end of the first fork bucket is provided with a mounting base, and the second fork bucket is bolted to the mounting base.

[0011] Beneficial effects: By setting the mounting base, the second stroke tube and the second fork bucket are located between the sliding contact point of the first stroke tube and the first fork bucket, and between the first fork shoulder seat, when they slide together, ensuring progressive shock absorption.

[0012] In a preferred embodiment of this utility model, a first connecting frame is provided between the two mounting bases.

[0013] Beneficial effects: The first connecting frame increases the connection strength between the two first fork barrels, allowing them to work together when subjected to impacts from the road surface, thus improving overall stability. When the electric vehicle travels on uneven roads, the first connecting frame can effectively disperse and transmit vibration forces, preventing the two first fork barrels from twisting or deforming due to uneven stress.

[0014] In a preferred embodiment of this utility model, a second connecting frame is provided between the two second fork buckets.

[0015] Beneficial effects: The second connecting frame increases the connection strength between the two second fork barrels, ensuring better synchronization during operation. During primary damping, the second connecting frame allows for more coordinated operation of the two second stroke tubes, the second fork barrels, and the second spring, ensuring the second damping assembly can evenly absorb and disperse vibration energy. When encountering minor changes in road surface, the second connecting frame allows both second fork barrels to respond simultaneously, improving damping sensitivity and effectiveness. Simultaneously, it enhances the connection stability between the second fork shoulder and the second fork barrel, making the entire second damping assembly more stable under vibration and extending its service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the multi-stage shock absorption and buffer fork of this utility model; Figure 2 This is a structural schematic diagram of the multi-stage shock absorption and buffer fork of this utility model from another angle; Figure 3 This is a structural schematic diagram of the multi-stage shock absorption and buffer fork of this utility model from another angle. Detailed Implementation

[0017] Typical embodiments embodying the features and advantages of this utility model will be specifically described in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0018] In the description of this application, the terms "first," "second," "side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure 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 application.

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] The reference numerals in the attached drawings include: first fork shoulder seat 101, first stroke tube 102, first fork bucket 103, mounting seat 104, second stroke tube 201, second fork bucket 202, second spring 203, second fork shoulder seat 204, first connecting frame 3, second connecting frame 4, steering shaft 5, and fork foot 6.

[0021] Multi-stage shock absorption fork, including a first shock absorption component and a second shock absorption component, such as... Figure 1 , 2 As shown, the first shock absorption assembly includes a first fork shoulder seat 101, two first stroke tubes 102, two first fork barrels 103, and a first spring located inside the first fork barrel 103. The first fork shoulder seat 101 and the two first stroke tubes 102 are integrally formed. The first stroke tubes 102 and the corresponding first fork barrels 103 are slidably engaged. The upper end of the first fork barrel 103 is provided with a mounting seat 104. A first connecting frame 3 is provided between the two mounting seats 104. The first stroke tubes 102, the corresponding first fork barrels 103, and the first spring work together to absorb shock.

[0022] In this embodiment, the first connecting frame 3 is an arc-shaped connecting frame.

[0023] like Figure 2 , 3 As shown, the second shock absorption assembly includes a second fork shoulder seat 204, two second stroke tubes 201, two second fork barrels 202, and a second spring 203 located inside the second fork barrel 202. In this embodiment, the second fork shoulder seat 204 is connected to the first fork shoulder seat 101, the two second stroke tubes 201 are respectively connected to the second fork shoulder seat 204, the second stroke tubes 201 are connected to the first fork shoulder seat 101, the second stroke tubes 201 are slidably engaged with the corresponding second fork barrels 202, the second fork barrels 202 and the first fork barrels 103 are detachably connected. In this embodiment, the second fork barrels 202 are bolted to the mounting base 104, and a second connecting bracket 4 is provided between the two second fork barrels 202. The second stroke tubes 201, the corresponding second fork barrels 202, and the second spring 203 cooperate to absorb shock.

[0024] In this embodiment, the first and second shock absorber components are combined in parallel for shock absorption. The second stroke tube 201, the second fork barrel 202, and the second spring 203 on the same side, as well as the first stroke tube 102, the first fork barrel 103, and the first spring, are combined in series for shock absorption, providing progressive buffering. When the electric vehicle is in motion, when the front wheel encounters fine lines, small bumps, or small jolts on the road surface, the second stroke tube 201, the second fork barrel 202, and the second spring 203 work together for primary shock absorption. When the front wheel encounters speed bumps or potholes, the second stroke tube 201, the second fork barrel 202, and the second spring 203 work together, while the first stroke tube 102, the first fork barrel 103, and the first spring work together for secondary shock absorption.

[0025] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A multi-stage shock-absorbing fork, comprising a first shock-absorbing assembly, the first shock-absorbing assembly including a first fork shoulder seat, two first stroke tubes, two first fork holders, and a first spring located within the first fork holders, the first fork shoulder seat and the two first stroke tubes being integrally formed, the first stroke tubes and corresponding first fork holders being slidably fitted, the first stroke tubes, the corresponding first fork holders, and the first springs cooperating to absorb shock, characterized in that: It also includes a second shock absorber assembly, which includes two second stroke tubes, two second fork barrels and a second spring located inside the second fork barrel. The second stroke tubes are connected to the first fork shoulder seat and are slidably engaged with the corresponding second fork barrel. The second fork barrel and the first fork barrel are detachably connected. The second stroke tubes, the corresponding second fork barrels and the second spring work together to absorb shock.

2. The multi-stage shock-absorbing fork according to claim 1, characterized in that: The second shock absorber assembly also includes a second shoulder seat, which is connected to the first shoulder seat, and two second stroke tubes are respectively connected to the second shoulder seat.

3. The multi-stage shock absorption fork according to claim 1, characterized in that: The first fork bucket is equipped with a mounting base at its upper end, and the second fork bucket is bolted to the mounting base.

4. The multi-stage shock absorption fork according to claim 3, characterized in that: A first connecting bracket is provided between the two mounting bases.

5. The multi-stage shock-absorbing fork according to claim 1, characterized in that: A second connecting frame is provided between the two second forklift buckets.

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