Mechanical adjusting mechanism for damping force of shock absorber
By designing a damping adjustment needle and knob structure in the shock absorber to adjust the open/closed state of the oil passage, the problem of inaccurate damping force adjustment in existing shock absorbers is solved, achieving precise control of damping force and improving vehicle comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI CHANGCHI VIBRATION REDUCTION TECHNOLOGY CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-12
AI Technical Summary
Existing shock absorbers cannot achieve precise control when adjusting damping force, which affects vehicle comfort.
The flow rate of the oil passage is adjusted by adjusting the damping adjustment needle inside the needle holder. The oil flow rate is gradually reduced by using the conical head to adjust the damping force. The design of the knob and elastic element ensures the accuracy and stability of the damping adjustment.
It enables effective adjustment of the damping force of the shock absorber, improves driving pleasure and vehicle comfort, prevents accidental displacement, and provides clear gear feedback and feel.
Smart Images
Figure CN224229160U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vibration damper technology, specifically to a mechanical adjustment mechanism for the damping force of a vibration damper. Background Technology
[0002] The required damping force of a vehicle's shock absorbers changes with variations in driving conditions such as load and road conditions. If the damping force of the shock absorber cannot be adjusted accordingly when driving conditions change, the damping effect will be unsatisfactory, severely impacting vehicle comfort. Currently, with the continuous advancement of technology by shock absorber manufacturers and the needs of users, various adjustable damping shock absorbers are available on the market.
[0003] In the existing shock absorber, the damping force is adjusted by regulating the flow rate of the oil in the working chamber through a regulating valve, thereby controlling the damping force of the shock absorber. However, in actual use, it is not possible to guarantee precise control of the oil flow rate, which is not conducive to the effective adjustment of the damping force of the shock absorber and affects the vehicle's comfort. Utility Model Content
[0004] In view of this, the present invention provides a mechanical adjustment mechanism for damping force of a shock absorber, which adjusts the flow rate of oil by adjusting the opening and closing of the oil passage, which is beneficial to achieving effective adjustment of the damping force of the shock absorber and improving driving pleasure.
[0005] To solve the above-mentioned technical problems, this utility model provides a mechanical adjustment mechanism for the damping force of a shock absorber, including a shock absorber body. A compression valve assembly is disposed inside the shock absorber body, and an adjustment needle seat corresponding to the compression valve assembly is disposed inside the shock absorber body. A damping adjustment needle is disposed within the adjustment needle seat. The compression valve assembly and the damping adjustment needle are axially aligned. The damping adjustment needle can move back and forth toward the compression valve assembly to adjust the flow of oil through holes within the compression valve assembly. The damping adjustment needle includes a conical head for blocking the oil through holes. The conical head is axially aligned with the oil through holes. As the conical head moves continuously toward the oil through holes, the flow rate of oil at the oil through holes is gradually reduced until the conical head enters the oil through holes and seals them. The damping force is adjusted according to the change in oil flow rate.
[0006] The adjusting needle holder has a threaded hole inside, and the outer circumference of the damping adjusting needle is provided with a thread that matches the threaded hole. The movement is achieved through the threaded connection of the damping adjusting needle in the adjusting needle holder.
[0007] The damping adjustment needle is equipped with a knob that engages with it. The surface of the knob has several semi-circular grooves to facilitate the operator's gripping of the knob. The knob has a slot inside, and the damping adjustment needle is located in the slot. By turning the knob, the damping adjustment needle is rotated. Under the action of the threads between the damping adjustment needle and the adjustment needle seat, it can move while the damping adjustment needle is engaged with the knob.
[0008] The damping adjustment needle has a connecting groove, and a screw is threaded onto the knob. The screw is located in the connecting groove, and by rotating the screw, the knob is fixed to the damper body.
[0009] The adjustment needle seat has several slots, and the outer circumference of the damping adjustment needle has a groove. An elastic element is installed in the groove and is locked in the slot. When the elastic element moves out of the slot, it will be forced to contract into the groove. When the damping adjustment needle rotates to the point where the groove corresponds to the next slot, the elastic element will extend and reset into the slot, thus realizing the adjustment of the damping adjustment needle's movement level.
[0010] The elastic element includes a spring set in a groove, with a ball connected to the spring. The spring will cause the ball to be pulled into the groove and extended to return to its original position under force. The ball facilitates the removal of the stop groove when the damping adjustment needle rotates.
[0011] The damping adjustment needle has an annular groove, and a sealing ring is installed in the annular groove to contact the adjustment needle seat, which can prevent oil from leaking out through the gap between the damping adjustment needle and the adjustment needle seat.
[0012] The compression valve assembly has several small holes around the oil passage hole to facilitate oil passage during compression. The oil can flow out from the small holes, and the oil flow rate can be guaranteed when the oil passage hole is blocked.
[0013] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:
[0014] 1. When using this utility model, the flow rate of the oil is adjusted by regulating the opening and closing of the oil passage, which helps to effectively adjust the damping force of the shock absorber and improve driving pleasure.
[0015] 2. When using this utility model, the knob is engaged with the damping adjustment needle and locked in place by the built-in screw to prevent accidental displacement.
[0016] 3. When this utility model is used, the damping adjustment needle can be adjusted to different positions by moving the elastic element into different slots as the damping adjustment needle moves spirally. This can improve the clear position feedback and feel, and prevent overshoot.
[0017] 4. When this utility model is used, as the conical head moves toward the oil passage, the flow rate of the oil in the oil passage can be gradually reduced until the conical head enters the oil passage to achieve blockage. The damping force can be adjusted according to the change in oil flow rate. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2This is a detailed structural diagram of the internal structure of the shock absorber body of this utility model;
[0020] Figure 3 This is a cross-sectional structural schematic diagram of the vibration damper body of this utility model;
[0021] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A;
[0022] Figure 5 This is a side view of the adjusting needle holder of this utility model.
[0023] Explanation of reference numerals in the attached drawings: 100, shock absorber body; 200, compression valve assembly; 301, adjusting needle seat; 302, damping adjusting needle; 303, knob; 401, groove; 402, spring; 403, ball; 404, stop groove; 500, screw; 600, sealing ring. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-5 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.
[0025] According to one embodiment of the present invention, such as Figure 1 , Figure 2 and Figure 3 As shown: This embodiment provides a mechanical adjustment mechanism for damping force of a shock absorber, including a shock absorber body 100. A compression valve assembly 200 is disposed inside the shock absorber body 100. An adjustment needle seat 301 corresponding to the compression valve assembly 200 is disposed inside the shock absorber body 100. The adjustment needle seat 301 is fixed inside the shock absorber body 100. A damping adjustment needle 302 is disposed inside the adjustment needle seat 301. The compression valve assembly 200 and the damping adjustment needle 302 are axially aligned. The damping adjustment needle 302 can move back and forth toward the compression valve assembly 200 to adjust the flow of oil through holes within the compression valve assembly 200, thereby controlling the oil flow rate. The damping adjustment needle 302 includes a conical head for blocking the oil through holes. The conical head is axially aligned with the oil through holes. As the conical head moves continuously toward the oil through holes, the oil flow rate at the oil through holes is gradually reduced until the conical head enters the oil through holes and achieves blockage. The damping force is adjusted according to the change in oil flow rate.
[0026] Furthermore, the adjusting needle seat 301 has a threaded hole inside, and the outer circumferential surface of the damping adjusting needle 302 is provided with a thread that matches the threaded hole. The screw movement is achieved through the threaded connection of the damping adjusting needle 302 in the adjusting needle seat 301.
[0027] Furthermore, such as Figure 2 and Figure 3 As shown, the damping adjustment needle 302 is equipped with a knob 303 that engages with it. The surface of the knob 303 has several semi-circular grooves to facilitate the operator's gripping of the knob 303. The knob 303 has a retaining groove, which is a square groove. One end of the damping adjustment needle 302 located in the retaining groove is square in shape to fit the square groove. By turning the knob 303, the damping adjustment needle 302 is rotated. Under the action of the threads between the damping adjustment needle 302 and the adjustment needle seat 301, the damping adjustment needle 302 can move while being rotated by the knob 303 and engaged in the retaining groove.
[0028] Furthermore, a connecting groove is provided inside the damping adjustment needle 302, and a screw 500 is threadedly connected to the knob 303. The screw 500 is located in the connecting groove. By rotating the screw 500, the knob 303 is fixed to the damper body 100. When the screw 500 is rotated, the damping adjustment needle 302 will not be moved due to the rotation of the screw 500.
[0029] According to another embodiment of the present invention, such as Figure 3 , Figure 4 and Figure 5 As shown, the adjusting needle seat 301 has several stop grooves 404, and the outer peripheral surface of the damping adjusting needle 302 has a groove 401. An elastic element is provided in the groove 401 and is stuck in the stop groove 404. When the elastic element moves out of the stop groove 404, the elastic element will be forced to contract into the groove 401. When the damping adjusting needle 302 rotates to the point where the groove 401 corresponds to the next stop groove 404, the elastic element will extend and reset into the stop groove 404, thereby realizing the adjustment of the damping adjusting needle 302's movement level.
[0030] Furthermore, the elastic element includes a spring 402 disposed in the groove 401, and a ball 403 is connected to the spring 402. When the damping adjustment needle 302 is rotated, the ball 403 will be driven by the spring 402 to be pulled into the groove 401. When it moves to the next stop groove 404, the ball 403 will be driven by the spring 402 to extend and be engaged. The ball 403 facilitates the removal of the stop groove 404 when the damping adjustment needle 302 is rotated.
[0031] Furthermore, the damping adjustment needle 302 is provided with an annular groove, and a sealing ring 600 is provided in the annular groove that can contact the adjustment needle seat 301, which can prevent oil from leaking out through the gap between the damping adjustment needle 302 and the adjustment needle seat 301.
[0032] It is worth mentioning that several small holes are opened around the oil passage hole inside the compression valve assembly 200 to facilitate oil passage during compression. The oil can flow out from the small holes, and the oil flow rate can be guaranteed when the oil passage hole is blocked.
[0033] In another embodiment, such as Figure 3 , Figure 4 and Figure 5 As shown, unlike the previous embodiment, the adjusting needle seat 301 can have a single stop groove 404, and the outer peripheral surface of the damping adjusting needle 302 can have several grooves 401. Each groove 401 is provided with an elastic element. Through multiple elastic elements and a single stop groove 404, the damping adjusting needle 302 can also be adjusted in terms of its movement level.
[0034] It should be clarified here that the compression valve assembly 200 is a common structure used in the existing technology for the damper body 100. Since it is not a major technical feature of this utility model, the model will not be limited here, nor will its structure be described in detail. Only the structures such as the adjusting needle seat 301 and the damping adjusting needle 302 that realize the adjustment of the damping force of the damper will be described in detail.
[0035] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A mechanical adjustment mechanism for damping force of a shock absorber, comprising a shock absorber body (100), wherein a compression valve assembly (200) is disposed inside the shock absorber body (100), characterized in that: The damper body (100) is provided with an adjusting needle seat (301) corresponding to the compression valve assembly (200). The adjusting needle seat (301) is provided with a damping adjusting needle (302). The compression valve assembly (200) and the damping adjusting needle (302) are axially aligned. The damping adjusting needle (302) can move back and forth toward the compression valve assembly (200) to adjust the flow of oil through holes in the compression valve assembly (200). The damping adjusting needle (302) includes a tapered head for unblocking oil through holes.
2. The damping force mechanical adjustment mechanism for a shock absorber as described in claim 1, characterized in that: The adjusting needle seat (301) has a threaded hole inside, and the outer circumferential surface of the damping adjusting needle (302) is provided with a thread that matches the threaded hole.
3. The damping force mechanical adjustment mechanism for a shock absorber as described in claim 2, characterized in that: The damping adjustment needle (302) is provided with a knob (303) that engages with it, which is used to drive the damping adjustment needle (302) to achieve spiral movement.
4. The damping force mechanical adjustment mechanism for a shock absorber as described in claim 3, characterized in that: The damping adjustment needle (302) is provided with a screw (500) that is threadedly connected to the knob (303) for fixing the knob (303) to the damper body (100).
5. The damping force mechanical adjustment mechanism for a shock absorber as described in claim 1, characterized in that: The adjusting needle seat (301) has several grooves (404) inside, and the damping adjusting needle (302) has a groove (401) on its outer peripheral surface. An elastic element is provided in the groove (401), and the elastic element is stuck in the groove (404). The elastic element can be moved out of the groove (404) to realize the adjustment of the damping adjusting needle (302) in terms of the position.
6. The damping force mechanical adjustment mechanism for a shock absorber as described in claim 5, characterized in that: The elastic element includes a spring (402) disposed in a groove (401), and a ball (403) is connected to the spring (402).
7. The damping force mechanical adjustment mechanism for a shock absorber as described in claim 1, characterized in that: The damping adjustment needle (302) is provided with a sealing ring (600) that contacts the adjustment needle seat (301).
8. The damping force mechanical adjustment mechanism for a shock absorber as described in claim 1, characterized in that: The compression valve assembly (200) has several small holes around the oil passage hole to facilitate oil passage during compression.