Adjusting structure of adjustable damping shock absorber
By introducing wedge blocks and rotation adjustment components into the shock absorber, the problem of restricted adjustment space after the shock absorber is solved, and the flexibility and accuracy of damping adjustment are achieved, meeting the damping adjustment needs in a small space.
Patent Information
- Application Number
- CN202422142033.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-02
AI Technical Summary
After the shock absorber is installed, the adjustment space is limited, which makes it difficult to adjust the thimble slidingly, affecting the damping adjustment effect.
An adjusting structure of an adjustable damping shock absorber is designed. By setting a wedge block and a rotation adjustment assembly in the hollow pull rod, the wedge surface and the thimble are used to cooperate to achieve an increase or decrease adjustment of damping. The wedge block slides in the adjustment cavity and is driven by the rotation adjustment assembly to achieve damping adjustment.
The directional conversion of damping adjustment is realized in a smaller volume space, which enhances the flexibility and accuracy of damping adjustment and solves the problem of limited adjustment space after installation.
Smart Images
Figure CN223190905U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shock absorbers, in particular to an adjusting structure of an adjustable damping shock absorber. Background Art
[0002] Shock absorbers, a core component of a vehicle, are used to dampen the shock of rebound after springs absorb shock, as well as impact from the road. While the shock-absorbing springs filter out road vibrations when driving over uneven surfaces, the springs themselves still experience reciprocating motion, and the shock absorbers are designed to dampen this spring bouncing. If the shock absorbers are too soft, the vehicle body will bounce up and down, while if they are too hard, they will create excessive resistance, hindering the proper functioning of the springs. Thus, shock absorbers effectively mitigate vibrations during vehicle operation.
[0003] The damping adjustment of the shock absorber is mainly achieved by adjusting the circulation volume of the internal hydraulic oil. Generally, a thimble is provided in the middle of the pull rod. The thimble moves back and forth relative to the pull rod to adjust the flow aperture of the plug and the flow volume of the circulating hydraulic oil. Due to the angle limit of the shock absorber after installation, the operating space for damping adjustment is limited. Utility Model Content
[0004] (1) Technical issues
[0005] The utility model aims to provide an adjustment structure of an adjustable damping shock absorber, which solves the problem of achieving sliding adjustment of an ejector pin when the adjustment space is limited after the shock absorber is installed.
[0006] (2) Technical solution
[0007] To achieve the above objectives, the present invention provides the following technical solutions:
[0008] A regulating structure of an adjustable damping shock absorber comprises a hollow pull rod and a thimble slidably arranged in the hollow pull rod, a plug is provided in front of one end of the hollow pull rod, a first through hole connected to the hollow pull rod is provided on the plug, and a second through hole connected to the interior of the hollow pull rod is provided on the hollow pull rod; the other end of the hollow pull rod is connected to a joint, the joint is provided with an regulating cavity, a wedge block is slidably installed in the regulating cavity, the wedge block is provided with a wedge-shaped surface abutting the end of the thimble, the wedge surface is inclined downward from one side of the thimble to one side of the regulating cavity; a rotation regulating component is also provided in the regulating cavity, the rotation regulating component is located below the wedge block and is threadedly connected to the wedge block.
[0009] Preferably, a sliding hole is provided in the adjusting cavity, and a sliding portion extending into the sliding hole is provided on the wedge block.
[0010] Preferably, the rotation adjustment assembly includes an adjustment seat fixed on the adjustment cavity, a rotation block is rotatably mounted on the adjustment seat, an adjustment rod is provided on the rotation block, and the adjustment rod is threadedly engaged with the wedge block.
[0011] Preferably, a limiting notch is provided on the rotating block, a spring is provided in the limiting notch, one end of the spring is connected to the side wall of the limiting notch, and the other end is connected to a steel ball; an annular gear groove is provided on the adjustment seat, and the spring pushes the steel ball to abut against the gear groove.
[0012] Preferably, the ejector pin is provided with a conical head at one end close to the plug.
[0013] Preferably, a first sealing ring is provided between the ejector pin and the hollow pull rod, a second sealing ring is provided between the adjustment seat and the adjustment cavity, and a third sealing ring is provided between the rotating block and the adjustment seat.
[0014] Preferably, the joint is provided with a fastening screw for locking the adjustment seat, and a set screw for limiting the rotation of the adjustment seat, and the axis of the set screw is eccentrically arranged relative to the center of the adjustment seat.
[0015] Preferably, a groove is formed on the end surface of the rotating block located on the opening side of the regulating cavity.
[0016] (3) Beneficial effects
[0017] By sliding a wedge block within the adjustment chamber and abutting the end of the ejector pin through the wedge surface, when the adjustment assembly is rotated to drive the wedge block toward the outside of the adjustment chamber, the wedge surface pushes the ejector pin toward the plug, reducing the amount of hydraulic oil flowing through the plug and achieving damping increase adjustment. When the wedge block is driven into the adjustment chamber, the wedge surface releases its squeezing effect on the ejector pin, and the internal hydraulic oil pushes the ejector pin backward until it abuts against the wedge surface, thereby increasing the amount of hydraulic oil flowing through the plug and achieving damping reduction adjustment. By adjusting the wedge block in a direction perpendicular to the direction of movement of the ejector pin, adjustment can be achieved in a small space and the adjustment direction can be switched. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;
[0019] Figure 2 for Figure 1 A schematic diagram of the partially enlarged structure at center A;
[0020] Figure 3 This is a front view structural diagram of a joint in an embodiment of the present utility model;
[0021] Figure 4 This is a schematic diagram of the top view of the joint in the embodiment of the present utility model;
[0022] exist Figures 1 to 4 In the figure, the corresponding relationship between the component names or lines and the figure numbers is as follows:
[0023] Hollow pull rod 1, second through hole 101, ejector pin 2, plug 3, first through hole 30, joint 4, adjustment chamber 40, sliding hole 41, wedge block 5, wedge surface 50, sliding part 51, rotation adjustment assembly 6, adjustment seat 61, rotating block 62, adjustment rod 63, limiting notch 64, spring 65, steel ball 66, gear slot 67, groove 68, first sealing ring 7, second sealing ring 8, third sealing ring 9, fastening screw 10, set screw 11. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0025] See also Figure 1-Figure 4 As shown, in the embodiment of the present invention, an adjustment structure of an adjustable damping shock absorber is proposed, which is applied to the shock absorber to adjust the sliding of the ejector pin 2, thereby realizing the adjustment of the internal hydraulic oil flow rate and the damping adjustment. The other structural structures of the shock absorber are all existing technologies, and the adjustment structure proposed in this embodiment can be integrated into the shock absorber. Specifically, it includes a hollow pull rod 1 and an ejector pin 2 slidingly arranged in the hollow pull rod 1, a plug 3 is provided in front of one end of the hollow pull rod 1, a first through hole 30 connected to the hollow pull rod 1 is opened on the plug 3, and a second through hole 101 connected to the inside of the hollow pull rod 1 is provided on the hollow pull rod 1. The plug 3 of the hydraulic oil flow channel inside and outside the hollow pull rod 1 is realized through the first through hole 30 and the second through hole 101, and the distance between the ejector pin 2 and the plug 3 is adjusted to realize the hydraulic oil flow rate adjustment.
[0026] Specifically, a joint 4 is connected to the other end of the hollow pull rod 1, and the joint 4 is provided with an adjusting chamber 40. A wedge block 5 is slidably installed in the adjusting chamber 40. The wedge block 5 is provided with a wedge surface 50 that abuts the end of the ejector pin 2. The wedge surface 50 is inclined downward from the side of the ejector pin 2 to the side of the adjusting chamber 40. At the same time, a rotation adjustment component 6 is also provided in the adjusting chamber 40. The rotation adjustment component 6 is located below the wedge block 5. The rotation adjustment component 6 is threadedly connected to the wedge block 5. The movement of the wedge block 5 in the adjusting chamber 40 is driven by the rotation adjustment component 6. When the wedge block 5 is driven to move toward the outside of the adjusting chamber 40, the wedge surface 50 pushes the ejector pin 2 to slide toward the plug 3, thereby realizing damping increase adjustment. When the wedge block 5 is pushed to move toward the inside of the adjusting chamber 40, the ejector pin 2 is pushed by the internal hydraulic oil until it abuts on the wedge surface 50, thereby realizing damping reduction adjustment.
[0027] In order to further guide and limit the sliding process of the wedge block 5, a sliding hole 41 is provided in the adjustment cavity 40, and a sliding portion 51 is provided on the wedge block 5 to extend into the sliding hole 41. When the wedge block 5 moves relative to the adjustment cavity 40, the sliding portion 51 slides in the sliding hole 41 to achieve limiting guidance.
[0028] Specifically, in order to facilitate the cooperation between the ejector pin 2 and the plug 3 to achieve sealing, a conical head is provided at one end of the ejector pin 2 close to the plug 3 so that the conical head can be inserted into the plug 3.
[0029] Specifically, the rotation adjustment assembly 6 includes an adjustment seat 61 fixed on the adjustment cavity 40, and a rotating block 62 is rotatably mounted on the adjustment seat 61. The rotating block 62 is provided with an adjustment rod 63, and the adjustment rod 63 is threadedly engaged with the wedge block 5. The rotating block 62 rotates with the adjustment rod 63, and the adjustment rod 63 is threadedly engaged with the wedge block 5. The wedge block 5 is limited to slide relative to the adjustment cavity 40, thereby realizing the reciprocating movement drive action of the wedge block 5.
[0030] In order to facilitate the rotation adjustment of the rotating block 62 , a groove 68 is provided on the end surface of the rotating block 62 located on the opening side of the adjustment cavity 40 . The groove 68 may be a straight groove or a cross groove.
[0031] At the same time, a fastening screw 10 for locking the adjustment seat 61 and a set screw 11 for limiting the rotation of the adjustment seat 61 are provided on the joint 4. The axis of the set screw 11 is eccentrically arranged relative to the center of the adjustment seat 61. The adjustment seat 61 is fixed in the joint 4 by the fastening screw 10, and the adjustment seat 61 is further stopped by the eccentrically arranged set screw 11, thereby ensuring that the adjustment seat 61 can be stably installed in the joint 4 and remains fixed without rotation, thereby facilitating the rotation support of the rotating block 62.
[0032] At the same time, a limiting notch 64 is provided on the rotating block 62, and a spring 65 is provided in the limiting notch 64. One end of the spring 65 is connected to the side wall of the limiting notch 64, and the other end is connected to the steel ball 66; an annular gear groove 67 is provided on the adjusting seat 61, and the spring 65 pushes the steel ball 66 to abut against the gear groove 67. The steel ball 66 is kept in abutment against the gear groove 67 by the action of the spring 65, thereby realizing the limitation of the rotating block 62 after rotation. Due to the use of threaded fitting and combined with the stop, a sliding lock can be formed for the wedge block 5 to ensure that there will be no change after the damping adjustment is completed.
[0033] In order to avoid possible leakage of internal hydraulic oil, a first sealing ring 7 is provided between the ejector pin 2 and the hollow pull rod 1, a second sealing ring 8 is provided between the adjustment seat 61 and the adjustment chamber 40, and a third sealing ring 9 is provided between the rotating block 62 and the adjustment seat 61. Effective sealing is achieved by arranging sealing rings at multiple positions.
[0034] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., etc., are used solely for distinction and description, and should not be construed as indicating or implying relative importance.
[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.
Claims
1. An adjustment structure of an adjustable damping shock absorber, characterized in that: It comprises a hollow pull rod (1) and a thimble (2) slidably arranged in the hollow pull rod (1); a plug (3) is provided in front of one end of the hollow pull rod (1); a first through hole (30) communicating with the hollow pull rod (1) is provided on the plug (3); and a second through hole (101) communicating with the interior of the hollow pull rod (1) is provided on the hollow pull rod (1); The other end of the hollow pull rod (1) is connected to a joint (4), the joint (4) is provided with an adjustment cavity (40), a wedge block (5) is slidably installed in the adjustment cavity (40), the wedge block (5) is provided with a wedge surface (50) that abuts against the end of the ejector pin (2), and the wedge surface (50) is inclined downward from the side of the ejector pin (2) to the side of the adjustment cavity (40); A rotation adjustment component (6) is further provided in the adjustment cavity (40). The rotation adjustment component (6) is located below the wedge block (5) and is threadedly connected to the wedge block (5).
2. The adjustment structure of an adjustable damping shock absorber according to claim 1, characterized in that: A sliding hole (41) is provided in the regulating cavity (40), and a sliding portion (51) extending into the sliding hole (41) is provided on the wedge block (5).
3. The adjustment structure of an adjustable damping shock absorber according to claim 2, characterized in that: The rotation adjustment assembly (6) comprises an adjustment seat (61) fixed on the adjustment cavity (40), a rotation block (62) is rotatably mounted on the adjustment seat (61), an adjustment rod (63) is provided on the rotation block (62), and the adjustment rod (63) is threadedly engaged with the wedge block (5).
4. The adjustment structure of an adjustable damping shock absorber according to claim 3, characterized in that: A limiting notch (64) is provided on the rotating block (62), a spring (65) is provided in the limiting notch (64), one end of the spring (65) is connected to the side wall of the limiting notch (64), and the other end is connected to a steel ball (66); An annular gear slot (67) is provided on the adjustment seat (61), and the spring (65) pushes the steel ball (66) to abut against the gear slot (67).
5. The adjustment structure of an adjustable damping shock absorber according to claim 4, characterized in that: One end of the ejector pin (2) close to the plug (3) is provided with a conical head.
6. The adjustment structure of an adjustable damping shock absorber according to claim 5, characterized in that: A first sealing ring (7) is provided between the ejector pin (2) and the hollow pull rod (1), a second sealing ring (8) is provided between the adjustment seat (61) and the adjustment cavity (40), and a third sealing ring (9) is provided between the rotating block (62) and the adjustment seat (61).
7. The adjustment structure of an adjustable damping shock absorber according to claim 6, characterized in that: The joint (4) is provided with a fastening screw (10) for locking the adjustment seat (61), and a set screw (11) for limiting the rotation of the adjustment seat (61), and the axis of the set screw (11) is eccentrically arranged relative to the center of the adjustment seat (61).
8. The adjustment structure of an adjustable damping shock absorber according to any one of claims 3 to 7, characterized in that: A groove (68) is formed on the end surface of the rotating block (62) located on the opening side of the regulating cavity (40).