Shock absorber bottom valve structure for frequency self-adaptive damping adjusting valve

Abstract

The utility model discloses a shock absorber bottom valve structure for a frequency self-adaptive damping regulating valve, which relates to the field of suspension shock absorbers and comprises a bolt, a retainer ring, a bottom valve seat, a valve plate and the frequency self-adaptive damping regulating valve. The frequency self-adaptive damping regulating valve is arranged in an inner cavity of the bottom valve seat, so that the supporting legs arranged at the bottom of the bottom valve seat cross the frequency self-adaptive damping regulating valve; in the assembling process, the bottom valve seat is in contact fit with the surface of the shock absorber bottom cover through the supporting feet, a gap is formed between the frequency self-adaption damping adjusting valve and the shock absorber bottom cover, and interference does not occur; the bolt sequentially penetrates through the check ring and the bottom valve seat and then extends into the frequency self-adaption damping adjusting valve, and the valve plate is fixed to the bottom valve seat through the frequency self-adaption damping adjusting valve. According to the utility model, the valve wall of the bottom valve seat is heightened, so that the frequency self-adaptive damping regulating valve can be accommodated, the installation centering requirement is ensured, oil flows through the frequency self-adaptive damping regulating valve, and the effect of regulating the damping force is achieved.

Description

Technical Field

[0001] The utility model relates to the field of suspension shock absorbers, and particularly relates to a shock absorber bottom valve structure for a frequency adaptive damping regulating valve. Background Art

[0002] As Figure 1 、 2 shown, in the prior art, a nut (1'), a valve stem (2'), and a retaining ring (3') are used to fix a valve plate (5') on a bottom valve seat (4'). When the shock absorber piston is in the compression stroke, the oil fluid flows through the fine flow channels of the bottom valve, as shown by the arrow direction in Figure 2 , and a compression damping force is formed.

[0003] Due to the very compact structure of the current bottom valve, it is impossible to accommodate a relatively large-sized frequency adaptive damping regulating valve. The frequency adaptive damping regulating valve interferes with the bottom cover of the shock absorber, resulting in unstable installation of the bottom valve and poor centering with the piston. Except for the oil fluid flow channels in the bottom valve seat, no oil fluid flow channels are reserved for the frequency adaptive damping regulating valve, making it impossible for the frequency adaptive damping regulating valve to play a role in regulating the damping. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies existing in the prior art, and to provide a shock absorber bottom valve structure for a frequency adaptive damping regulating valve, which can accommodate the frequency adaptive damping regulating valve, can ensure the requirements of installation centering, and can enable the oil fluid to flow through the frequency adaptive damping regulating valve to play a role in regulating the damping force.

[0005] The purpose of the utility model is completed by the following technical solutions: This shock absorber bottom valve structure for a frequency adaptive damping regulating valve includes a bolt, a retaining ring, a bottom valve seat, a valve plate, and a frequency adaptive damping regulating valve; the frequency adaptive damping regulating valve is placed into the inner cavity of the bottom valve seat, so that the feet arranged at the bottom of the bottom valve seat cross over the frequency adaptive damping regulating valve; during assembly, the bottom valve seat is in surface contact and cooperation with the surface of the shock absorber bottom cover through the feet, and a gap is formed between the frequency adaptive damping regulating valve and the shock absorber bottom cover without interference; the bolt sequentially penetrates through the retaining ring and the bottom valve seat and then extends into the frequency adaptive damping regulating valve, and the valve plate is fixed on the bottom valve seat through the frequency adaptive damping regulating valve.

[0006] As a further technical solution, a plurality of bottom valve flow channels are axially opened in the bottom valve seat. When the shock absorber piston is in the compression stroke, the oil fluid flows through the bottom valve flow channels to form a compression damping force.

[0007] As a further technical solution, a regulating valve flow channel is axially formed inside the bolt. When the up-and-down movement frequency of the shock absorber piston is high, the frequency adaptive damping regulating valve opens. When the shock absorber piston is in the compression stroke, the hydraulic oil flows out of the frequency adaptive damping regulating valve through the regulating valve flow channel, realizing the decrease of the damping force.

[0008] The beneficial effects of the present utility model are as follows:

[0009] 1. The valve wall of the bottom valve seat is heightened, which can accommodate the frequency adaptive damping regulating valve;

[0010] 2. The feet of the bottom valve seat are in complete contact with the shock absorber bottom cover, and a gap is formed between the frequency adaptive damping regulating valve and the bottom cover, and the two do not interfere with each other, which can ensure the installation centering requirement;

[0011] 3. A new flow channel is newly designed, which can enable the hydraulic oil to flow through the frequency adaptive damping regulating valve, playing a role in regulating the damping force. Description of the Drawings

[0012] Figure 1 It is a structural schematic diagram of the prior art.

[0013] Figure 2 is Figure 1 the A-A sectional view of

[0014] Figure 3 It is a structural schematic diagram of the present utility model.

[0015] Figure 4 is Figure 3 the B-B sectional view of

[0016] Figure 5 It is a structural schematic diagram of the present utility model after being assembled with the shock absorber bottom cover.

[0017] Description of the reference numerals: nut 1', valve rod 2', retaining ring 3', bottom valve seat 4', valve plate 5';

[0018] bolt 1, retaining ring 2, bottom valve seat 3, valve plate 4, frequency adaptive damping regulating valve 5, feet 6, shock absorber bottom cover 7, gap 8, bottom valve flow channel 9, regulating valve flow channel 10. Detailed Description of the Embodiment

[0019] The present utility model will be introduced in detail below in conjunction with the drawings:

[0020] Embodiment: As shown in the Figures 3 to 5 drawing, this shock absorber bottom valve structure for a frequency adaptive damping regulating valve includes a bolt 1, a retaining ring 2, a bottom valve seat 3, a valve plate 4, a frequency adaptive damping regulating valve 5, feet 6, a shock absorber bottom cover 7, a gap 8, a bottom valve flow channel 9, and a regulating valve flow channel 10.

[0021] Reference appendix Figure 3 and 4 , place the frequency adaptive damping regulating valve 5 into the inner cavity of the bottom valve seat 3. The valve wall of the bottom valve seat 3 is fully heightened, so that the support feet 6 provided at the bottom of the bottom valve seat 3 can cross over the frequency adaptive damping regulating valve 5, that is, the frequency adaptive damping regulating valve 5 is completely placed into the inner cavity of the bottom valve seat 3 without protruding from below. As Figure 5 shown, during assembly, the bottom valve seat 3 is in surface contact fit (curved contact) with the surface of the shock absorber bottom cover 7 through the support feet 6. Since the frequency adaptive damping regulating valve 5 does not protrude from the bottom valve seat 3, a gap 8 is formed between the frequency adaptive damping regulating valve 5 and the shock absorber bottom cover 7, and there is no interference between the two, ensuring the centering of the bottom valve installation.

[0022] As Figure 4 shown, the bolt 1 sequentially passes through the retaining ring 2 and the bottom valve seat 3 and then extends into the frequency adaptive damping regulating valve 5, and the valve plate 4 is fixed on the bottom valve seat 3 through the frequency adaptive damping regulating valve 5.

[0023] Furthermore, a plurality of bottom valve flow channels 9 are axially provided in the bottom valve seat 3. When the shock absorber piston is in the compression stroke, the oil fluid flows through the bottom valve flow channels 9 to form a compression damping force. A regulating valve flow channel 10 is axially provided in the bolt 1. When the frequency of the up and down movement of the shock absorber piston is high, the frequency adaptive damping regulating valve 5 opens the valve, so that when the shock absorber piston is in the compression stroke, the oil fluid flows out of the frequency adaptive damping regulating valve 5 through the regulating valve flow channel 10, realizing the reduction of the damping force.

[0024] Working process of the present utility model: The present utility model uses the bolt 1, the retaining ring 2 and the frequency adaptive damping regulating valve 5 to fix the valve plate 4 on the bottom valve seat 3. At the same time, the valve wall of the bottom valve seat 3 is heightened, the frequency adaptive damping regulating valve 5 can be placed in it, and the support feet 6 of the bottom valve seat 3 are in curved contact with the shock absorber bottom cover 7, ensuring the centering of the bottom valve installation.

[0025] When the shock absorber piston is in the compression stroke, the oil fluid flows through the small flow channels (bottom valve flow channels 9) of the bottom valve, as Figure 4 shown by the arrow directions on both sides, and a compression damping force is formed. When the frequency of the up and down movement of the shock absorber piston is high, the frequency adaptive damping regulating valve 5 will open the valve. When the shock absorber piston is in the compression stroke, the oil fluid can also flow through the hole (regulating valve flow channel 10) in the middle of the bolt 1 and then flow out of the frequency adaptive damping regulating valve 5, achieving the function of reducing the damping force.

[0026] Term explanation:

[0027] Shock absorber: It can suppress the oscillation after the spring absorbs shock and rebounds and the impact from the road surface, and is widely used in automobiles. It is used to accelerate the attenuation of the vibration of the vehicle frame and the body to improve the ride comfort of the vehicle.

[0028] Base valve: When the shock absorber piston makes a compression stroke, the oil flows through the small flow channel of the base valve to form a compression damping force.

[0029] Frequency adaptive damping regulating valve: When the frequency of the up and down movement of the shock absorber piston is high, the frequency adaptive damping regulating valve will open the valve, causing the damping force to decrease.

[0030] It can be understood that for those skilled in the art, any equivalent replacement or change to the technical solution and inventive concept of the present utility model should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A shock absorber bottom valve structure for a frequency adaptive damping regulating valve, characterized in that: It includes a bolt (1), a retaining ring (2), a bottom valve seat (3), a valve disc (4), and a frequency adaptive damping regulating valve (5); the frequency adaptive damping regulating valve (5) is placed into the inner cavity of the bottom valve seat (3), such that the support feet (6) provided at the bottom of the bottom valve seat (3) cross over the frequency adaptive damping regulating valve (5); during assembly, the bottom valve seat (3) is in surface contact and cooperation with the shock absorber bottom cover (7) through the support feet (6), and a gap (8) is formed between the frequency adaptive damping regulating valve (5) and the shock absorber bottom cover (7) without interference; the bolt (1) sequentially passes through the retaining ring (2) and the bottom valve seat (3) and then extends into the frequency adaptive damping regulating valve (5), and the valve disc (4) is fixed on the bottom valve seat (3) through the frequency adaptive damping regulating valve (5).

2. The shock absorber bottom valve structure for a frequency adaptive damping regulating valve according to claim 1, characterized in that: A number of bottom valve flow channels (9) are axially formed in the bottom valve seat (3). When the shock absorber piston is in the compression stroke, the hydraulic oil flows through the bottom valve flow channels (9) to form a compression damping force.

3. The shock absorber bottom valve structure for a frequency adaptive damping regulating valve according to claim 2, characterized in that: A regulating valve flow channel (10) is axially formed in the bolt (1). When the frequency of the up-and-down movement of the shock absorber piston is high, the frequency adaptive damping regulating valve (5) opens the valve, such that when the shock absorber piston is in the compression stroke, the hydraulic oil flows out of the frequency adaptive damping regulating valve (5) through the regulating valve flow channel (10) to achieve a decrease in the damping force.

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