Large-damping-force compression damper

Abstract

The utility model discloses a large damping force compression shock absorber which comprises a working cylinder and a liquid storage cylinder, a piston rod is arranged in the working cylinder in a sliding mode, a recovery valve assembly is arranged on the piston rod, and the large damping force compression shock absorber is characterized in that an adapter is arranged at an opening of one end of the working cylinder, a first annular step is arranged at one end of the adapter, and a second annular step is arranged at the other end of the adapter. A first annular step is arranged at one end of the working cylinder and abuts against one end of the working cylinder, a through hole is formed in the middle of the adapter, a second annular step is arranged at one end of the compression valve assembly and abuts against a positioning step of the adapter, and one end of the liquid storage cylinder is connected with a base. And the base is tightly pressed at one end, far away from the adapter, of the compression valve assembly. The hydraulic cylinder is simple in structure and reasonable in design, the working cylinder with the large inner diameter and the compression valve system with the small gear can be arranged in a matched mode, and therefore the compression damping force of the hydraulic cylinder is effectively improved.

Description

Technical Field

[0001] This utility model relates to vibration dampers, specifically to a high-damping-force compression vibration damper. Background Technology

[0002] Shock absorbers are mainly used in vehicles to reduce vibrations during driving, ensuring vehicle stability and improving the driving experience. Their structure mainly includes a working cylinder and an oil reservoir. A piston rod slides within the working cylinder, and a return valve is connected to the piston rod. A compression valve is located at the opening at one end of the working cylinder. Chinese patent document (Publication No.: CN 120274009 A; Publication Date: July 8, 2025) discloses a lateral shock absorber compression valve assembly, including a compression valve assembly laterally installed between the working cylinder and the oil reservoir base. Similarly, Chinese patent document (Publication No.: CN112901702A; Publication Date: March 4, 2021) discloses a hydraulic buffer mechanism and a hydraulic shock absorber. Referring to the accompanying drawings, its compression valve assembly is also pressed tightly against the opening at one end of the working cylinder by a bottom cover.

[0003] The drawback of the above structure is that, since the compression valve is pressed tightly against the opening at one end of the working cylinder, in order to ensure sealing, the size of the compression valve must be compatible with the size of the working cylinder. If the inner diameter of the working cylinder is large, only a large-size compression valve can be configured. However, the damping force of a large-size compression valve is generally small, which makes it difficult to meet the requirements of large compression damping. Utility Model Content

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by this utility model is to provide a large damping force compression damper for solving the above-mentioned problems.

[0005] Therefore, this utility model is implemented using the following solution:

[0006] A high-damping-force compression damper includes a working cylinder and a reservoir cylinder. A piston rod is slidably disposed inside the working cylinder, and a recovery valve assembly is disposed on the piston rod. The working cylinder is characterized by having an adapter seat at one end of its opening, a first annular step at one end of the adapter seat pressing against one end of the working cylinder, a through hole in the middle of the adapter seat, a second annular step at one end of the compression valve assembly pressing against a positioning step on the adapter seat, and a base connected to one end of the reservoir cylinder, the base pressing tightly against the end of the compression valve assembly furthest from the adapter seat.

[0007] The adapter seat has an internal thread on the inner wall of the corresponding through hole, and also includes an adjustment seat. The outer wall of the adjustment seat has an external thread that mates with the internal thread, and the positioning step is provided on the adjustment seat.

[0008] The bottom of the adjustment seat has symmetrically arranged slots, and the two ends of the U-shaped adjustment handle can be inserted into the corresponding slots respectively.

[0009] The base is welded to the liquid storage cylinder.

[0010] The high-damping force compression shock absorber described above, by additionally setting an adapter seat, can be tightly pressed against the open end of the working cylinder, and a small-sized compression valve assembly is configured inside the adapter seat, so that the small-sized compression valve assembly can be adapted to the large-sized working cylinder, thereby improving the damping force of the large-sized shock absorber. At the same time, its structure is very simple and does not require modification of the original shock absorber structure, so it can be promoted and used in most traditional shock absorbers. Attached Figure Description

[0011] The present invention includes the following figures:

[0012] Figure 1 This is a cross-sectional view of the present invention;

[0013] Figure 2 for Figure 1 A magnified view of the area pointed to by A in the middle;

[0014] Figure 3 This is a structural diagram of the U-shaped adjusting handle of this utility model. Detailed Implementation

[0015] As shown in the figure, the large damping force compression damper disclosed in this utility model includes a working cylinder 3 and a liquid storage cylinder 2. A piston rod 1 is slidably arranged inside the working cylinder 3, and a recovery valve assembly 4 is arranged on the piston rod 1. An adapter seat 5 is arranged at the opening at one end of the working cylinder 3. A first annular step is arranged at one end of the adapter seat 5, and the first annular step abuts against one end of the working cylinder 3. A through hole 8 is opened in the middle of the adapter seat 5. A second annular step is arranged at one end of the compression valve assembly 9, and the second annular step abuts against the positioning step of the adapter seat 5. A base 10 is connected to one end of the liquid storage cylinder 2, and the base 10 is pressed tightly against the end of the compression valve assembly 9 away from the adapter seat 5.

[0016] Furthermore, the adapter 5 has an internal thread on the inner wall corresponding to the through hole 8, and also includes an adjusting seat 6. The outer wall of the adjusting seat 6 has an external thread that mates with the internal thread, and a positioning step is provided on the adjusting seat 6. By controlling the rotation of the adjusting seat 6, the position of the adjusting seat 6 can be adjusted, thereby adjusting the distance between the positioning step and the base 10, thus adapting to compression valve assemblies of different heights and further improving its flexibility of use.

[0017] Furthermore, the bottom of the adjusting seat 6 has symmetrically arranged slots 7, and the two ends of the U-shaped adjusting handle 11 can be inserted into the corresponding slots 7 respectively. With the above structure, by inserting the U-shaped adjusting handle 11 into the slot 7 and then holding and rotating the U-shaped adjusting handle 11, the adjusting seat 6 can be rotated to adjust its position.

[0018] The base 10 is welded to the liquid storage tank 2. This effectively ensures the firmness of the connection between the base 10 and the liquid storage tank 2.

[0019] In this type of vibration damper, when the piston rod 1 moves inward, it drives the recovery valve assembly 4 closer to the compression valve assembly 9, allowing damping oil to be forced from the working cylinder 3 into the reservoir 2 via the recovery valve assembly 4, thus achieving damping vibration reduction. This is the same working principle as similar products on the market, so it will not be described in detail here.

[0020] This invention features a structure that, through the addition of an adapter seat, can be tightly pressed against the open end of the working cylinder. A small-sized compression valve assembly is configured inside the adapter seat, allowing the small-sized compression valve assembly to be adapted to the large-sized working cylinder, thereby improving the damping force of the large-sized shock absorber. At the same time, its structure is very simple and does not require modification of the original shock absorber structure, making it suitable for widespread use in most traditional shock absorbers.

Claims

1. A high-damping-force compression damper, comprising a working cylinder (3) and a reservoir cylinder (2), wherein a piston rod (1) is slidably disposed within the working cylinder (3), and a recovery valve assembly (4) is disposed on the piston rod (1), characterized in that: An adapter seat (5) is provided at one end of the working cylinder (3). A first annular step is provided at one end of the adapter seat (5). The first annular step presses against one end of the working cylinder (3). A through hole (8) is provided in the middle of the adapter seat (5). A second annular step is provided at one end of the compression valve assembly (9). The second annular step presses against the positioning step of the adapter seat (5). A base (10) is connected to one end of the liquid storage cylinder (2). The base (10) is pressed tightly against the end of the compression valve assembly (9) away from the adapter seat (5).

2. The high-damping force compression damper according to claim 1, characterized in that: The adapter (5) has an internal thread on the inner wall corresponding to the through hole (8), and also includes an adjustment seat (6). The outer wall of the adjustment seat (6) has an external thread that mates with the internal thread, and the positioning step is provided on the adjustment seat (6).

3. The high-damping force compression damper according to claim 2, characterized in that: The bottom of the adjustment seat (6) has symmetrically arranged slots (7), and the two ends of the U-shaped adjustment handle (11) can be inserted into the corresponding slots (7) respectively.

4. The high-damping-force compression damper according to claim 1, characterized in that: The base (10) is welded to the liquid storage cylinder (2).

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