Damping adjusting structure of shock absorber

Abstract

The utility model relates to the technical field of shock absorbers, in particular to a damping adjusting structure of a shock absorber, which is characterized in that the upper end of a core column is fixedly provided with a rotating seat, the bottom of the rotating seat is provided with a groove, the top of an adjusting seat is provided with a protruding part, the side wall of the groove is provided with a mounting groove extending along the radial direction of the core column, and a positioning pin is movably arranged in the mounting groove; a clamping groove is formed in the protruding part, a positioning spring is arranged in the groove, a movable column is fixedly installed at the end, away from the clamping groove, of the positioning pin, a through hole allowing the movable column to penetrate out is formed in the outer wall of the rotating base, a rotating shell is further vertically installed on the outer side of the rotating base in a sliding mode, and an avoiding groove allowing one end of the movable column to penetrate out of the through hole is formed in the rotating shell. A reset spring enabling the receding groove to deviate from one end of the through hole is connected between the rotating base and the rotating shell. When no external force exists, the reset spring gives upward thrust to the rotary shell, the receding groove is made to move to the position above the through hole, and therefore rotation of the rotary shell and the rotary base relative to the adjusting base is limited.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, and particularly relates to a damping adjustment structure of a shock absorber. Background Art

[0002] With the rapid development of the automotive industry, as one of the important components of an automobile, the shock absorber largely determines the riding comfort of the automobile.

[0003] In the prior art, the invention patent with the application number CN201811492630.X discloses a shock absorber with manually adjustable damping, which includes a piston assembly, an outer cylinder, an intermediate cylinder, an inner cylinder, a bottom valve assembly and a regulating valve. The regulating valve includes an inner valve core, an intermediate valve core, a valve seat and a knob. The intermediate valve core is sleeved outside the inner valve core, the valve seat is sleeved outside the intermediate valve core, the valve seat is fixedly connected to the outer wall of the outer cylinder, the tail of the inner valve core is threadedly connected to the intermediate valve core, and the knob is configured to drive the inner valve core to rotate relative to the intermediate valve core while the inner valve core spirally advances or retreats inside the intermediate valve core.

[0004] When the operator rotates the knob of the above shock absorber, it drives the inner valve core to spirally advance or retreat inside the intermediate valve core to precisely adjust the oil passing gap to increase or decrease, and further precisely adjust the oil passing amount, and can achieve stepless and continuous adjustment of the oil passing amount. However, after the damping of the above shock absorber is adjusted, the knob cannot be effectively locked, so it is easy to cause misoperation and change the damping of the shock absorber. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a damping adjustment structure of a shock absorber, which can avoid the misoperation from causing the rotation of the core column, so as to solve the defects mentioned in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A damping adjustment structure for a shock absorber, comprising an adjustment seat. The adjustment seat is provided with a first oil passage hole and a second oil passage hole. The adjustment seat is also threadedly connected with a vertically extending core column. Rotating the core column adjusts the oil flow amount between the first oil passage hole and the second oil passage hole. The upper end of the core column extends to the outside of the oil passage cavity and is fixedly installed with a rotating seat. The bottom of the rotating seat is provided with a groove. The top of the adjustment seat is provided with a protruding portion extending upward into the groove. The side wall of the groove is provided with a mounting groove extending radially along the core column. A positioning pin is movably installed in the mounting groove. The protruding portion is provided with a card slot matching the positioning pin. A positioning spring for pushing the positioning pin into the card slot is arranged in the groove. One end of the positioning pin away from the card slot is fixedly installed with a movable column extending radially along the core column. A through hole for the movable column to pass through is arranged on the outer wall of the rotating seat. A rotating shell is also vertically slidably installed on the outside of the rotating seat. The rotating shell is provided with an avoidance groove for one end of the movable column to pass through the through hole. A return spring for deviating the avoidance groove from one end of the through hole is connected between the rotating seat and the rotating shell. When the avoidance groove deviates from one end of the through hole, the inner wall of the rotating shell blocks one end of the through hole and restricts the positioning pin from disengaging from the card slot.

[0008] As a preferred technical solution, the end of the positioning pin inserted into the card slot is arc-shaped.

[0009] As a preferred technical solution, a plurality of the card slots are evenly spaced circumferentially around the core column.

[0010] As a preferred technical solution, the rotating seat is cylindrical and coaxially arranged with the core column. The rotating shell includes an annular holding portion sleeved on the outer peripheral surface of the rotating seat and a top cover fixedly installed at the upper end of the holding portion. The avoidance groove is located on the inner wall of the holding portion. The return spring is supported between the top of the rotating seat and the top cover. The lower end of the holding portion is provided with a limiting portion for preventing the rotating seat from coming out. When the limiting portion contacts the rotating seat, the avoidance groove moves above the through hole.

[0011] As a preferred technical solution, a protruding positioning block is arranged on the outside of the rotating seat. A vertically extending sliding groove is arranged on the inner wall of the holding portion. The positioning block is slidably installed in the sliding groove.

[0012] As a preferred technical solution, an oil passage chamber is provided on the adjustment seat, and the oil passage chamber is in a cylindrical shape with an opening at the top. An oil passage channel extending downward is provided at the bottom of the oil passage chamber, and one end of the first oil passage hole and one end of the second oil passage hole are respectively connected to the oil passage chamber and the oil passage channel, and the core column is threadedly connected in the oil passage chamber and closes the oil passage chamber located above the first oil passage hole, and an inverted cone head is provided at the lower end of the core column, and an oil passage gap is provided between the inverted cone head and the upper end of the oil passage channel.

[0013] As a preferred technical solution, a protruding heat sink is provided on the outer side of the adjustment seat.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. One end of the positioning pin inserted into the slot is in an arc shape. When the core column needs to be rotated and adjusted, a certain force needs to be applied to rotate the rotating seat to make the arc end of the positioning pin disengage from the slot, thereby increasing the damping feeling of the core column rotation. In the process of the core column and the rotating seat rotating, the sound emitted by the positioning pin inserted into the slot serves as a reminder of the rotation angle;

[0016] 2. When there is no external force, the return spring gives the rotating shell an upward thrust, so that the avoidance groove moves to the top of the through hole. When the end of the movable column away from the positioning pin hits the inner wall of the holding part, it is not enough to make the positioning pin completely disengage from the slot, thereby limiting the rotation of the rotating shell and the rotating seat relative to the adjustment seat, avoiding accidental contact with the rotating shell and the rotating seat to cause the core column to rotate; when it is necessary to adjust the damping of the shock absorber, overcome the thrust of the return spring and press the rotating shell downward, so that the avoidance groove moves to align with the through hole, and then hold the rotating shell and apply force to drive the rotating seat and the core column to rotate, and adjust the amount of oil passing between the first oil hole and the second oil hole;

[0017] 3. Both the front and rear sides of the adjustment seat are provided with protruding heat sinks, which are in the shape of long strips extending laterally. Multiple heat sinks are evenly spaced up and down, which improves the heat dissipation performance of the adjustment seat, increases the service life of the shock absorber and the stability of the shock absorber damping adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0020] Figure 2 is Figure 1 a sectional view schematic diagram;

[0021] Figure 3 is Figure 2 a partial enlarged view of part Ⅰ in;

[0022] Figure 4 is a top view schematic diagram of the adjusting seat of the embodiment of the present utility model.

[0023] In the figure: 1 - adjusting seat; 2 - oil passage cavity; 3 - oil passage; 4 - first oil hole; 5 - second oil hole; 6 - core column; 7 - O-ring; 8 - inverted conical head; 9 - oil passage clearance; 10 - rotating seat; 11 - groove; 12 - protruding part; 13 - mounting groove; 14 - positioning pin; 15 - clamping groove; 17 - positioning spring; 18 - movable column; 19 - through hole; 20 - rotating housing; 21 - holding part; 22 - top cover; 23 - limiting part; 24 - positioning block; 25 - sliding groove; 26 - avoiding groove; 27 - reset spring; 28 - heat sink. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Such as Figures 1 to 4As shown in the figure, a damping adjustment structure of a shock absorber includes an adjustment seat 1, which is fixedly installed on the side of the shock absorber. An oil passage cavity 2 is provided on the adjustment seat 1. The oil passage cavity 2 is cylindrical with an open top. A downward-extending oil passage 3 is provided at the bottom of the oil passage cavity 2. The diameter of the oil passage 3 is smaller than that of the oil passage cavity 2. A first oil hole 4 is provided on the adjustment seat 1. The right end of the first oil hole 4 communicates with one side of the bottom of the oil passage cavity 2, and the left end extends leftward and communicates with the middle cylinder of the shock absorber. A second oil hole 5 is also provided on the adjustment seat 1. The right end of the second oil hole 5 communicates with the lower end of the oil passage 3, and the left end communicates with the outer cylinder of the shock absorber. A vertically extending core column 6 is threadedly connected in the oil passage 3. The upper end of the core column 6 is provided with an external thread, and an internal thread matching the external thread of the core column 6 is provided inside the upper end of the oil passage cavity 2. Rotating the core column 6 can make it move up and down in the oil passage cavity 2. An O-ring 7 is embedded on the outer side of the middle part of the core column 6. The O-ring 7 is in contact with the inner wall of the oil passage cavity 2 and closes the oil passage cavity 2 above the first oil hole 4 to prevent oil leakage. A conical head 8 is integrally formed at the lower end of the core column 6. The conical head 8 extends into the upper end of the oil passage 3. An oil passage gap 9 is provided between the conical head 8 and the upper end of the oil passage 3. Rotating the core column 6 to make it move up and down in the oil passage cavity 2 changes the size of the conical head 8 extending into the oil passage 3, thereby adjusting the size of the oil passage gap 9, and further adjusting the oil flow between the first oil hole 4 and the second oil hole 5.

[0026] As Figure 2 and Figure 4As shown, the upper end of the core column 6 extends to the outside of the oil passage chamber 2 and is fixedly installed with a rotating seat 10. The rotating seat 10 is cylindrical and coaxially arranged with the core column 6. The upper end of the core column 6 is integrally formed with a connector, which can be a multi-prism shape. The rotating seat 10 is provided with a slot matching the connector. The connector at the upper end of the core column 6 is inserted into the slot of the rotating seat 10 to prevent relative rotation between the two. The rotating seat 10 is specifically fixedly connected to the core column 6 by bolts; the bottom of the rotating seat 10 is provided with a circular groove 11 coaxially arranged with the core column 6, located in the oil passage chamber 2. The top of the adjusting seat 1 around the periphery is provided with a protrusion 12 extending upward into the groove 11. The protrusion 12 is cylindrical and is coaxially arranged with the groove 11. The side wall of the groove 11 is provided with a mounting groove 13 extending along the radial direction of the stem 6. A positioning pin 14 is movably installed in the mounting groove 13. A clamping groove 15 matching the positioning pin 14 is provided on the outer circumferential surface of the protrusion 12. The clamping groove 15 extends vertically, and a plurality of the clamping grooves 15 are evenly spaced around the circumference of the stem 6. A positioning spring 17 for pushing the positioning pin 14 to clamp into the clamping groove 15 is provided in the groove 11. One end of the positioning pin 14 clamped into the clamping groove 15 is in an arc shape. When the stem 6 needs to be rotated and adjusted, a certain force needs to be applied to rotate the rotating seat 10 to make the arc-shaped end of the positioning pin 14 disengage from the clamping groove 15, thereby increasing the damping feeling of the rotation of the stem 6. In the process of the rotation of the stem 6 and the rotating seat 10, the sound emitted by the positioning pin 14 clamping into the clamping groove 15 serves as a prompt for the rotation angle.

[0027] like Figure 2 and Figure 3 As shown, the end of the positioning pin 14 away from the slot 15 is integrally formed with a movable column 18 extending radially along the core column 6, and a through hole 19 is provided on the outer wall of the rotating seat 10 for the movable column 18 to pass through. A rotating shell 20 is also vertically slidably installed on the outer side of the rotating seat 10. Specifically, the rotating shell 20 includes an annular holding portion 21 sleeved on the outer circumferential surface of the rotating seat 10 and a top cover 22 fixedly installed on the upper end of the holding portion 21 by bolts. A limiting portion 23 is provided at the lower end of the holding portion 21 to prevent the rotating seat 10 from falling out. The limiting portion 23 extends inwardly and hooks the outer edge of the lower end of the rotating seat 10 to prevent the rotating shell 20 from separating from the rotating seat 10; a protruding positioning block 24 is integrally formed on the outer side of the rotating seat 10, and a vertically extending slide groove 25 is provided on the inner wall of the holding portion 21. The positioning block 24 is slidably installed in the slide groove 25, so that the rotating seat 10 can rotate synchronously with the rotating shell 20.

[0028] An avoidance groove 26 is provided on the inner wall of the holding part 21 for the end of the movable column 18 far from the positioning pin 14 to pass through the through hole 19. A return spring 27 is connected between the top of the rotating seat 10 and the top cover 22. When there is no external force, the return spring 27 gives an upward thrust to the rotating shell 20, so that the limiting part 23 contacts the lower end of the rotating seat 10. At this time, the avoidance groove 26 moves above the through hole 19, and the inner wall of the holding part 21 blocks the end of the through hole 19 far from the installation groove 13. When the end of the movable column 18 far from the positioning pin 14 abuts against the inner wall of the holding part 21, it is not enough to completely disengage the positioning pin 14 from the clamping groove 15, thereby restricting the rotation of the rotating shell 20 and the rotating seat 10 relative to the adjusting seat 1 and avoiding accidentally touching the rotating shell 20 and the rotating seat 10 to cause the core column 6 to rotate. When it is necessary to adjust the damping of the shock absorber, overcome the thrust of the return spring 27 and press the rotating shell 20 downward, so that the avoidance groove 26 moves to align with the through hole 19, and then the rotating shell 20 can be held and force can be applied to drive the rotating seat 10 and the core column 6 to rotate to adjust the oil flow between the first oil passing hole 4 and the second oil passing hole 5.

[0029] Convex heat dissipation fins 28 are provided on both the front and rear sides of the adjusting seat 1. The heat dissipation fins 28 are in the shape of long strips extending horizontally, and a plurality of heat dissipation fins 28 are evenly spaced up and down, which improves the heat dissipation performance of the adjusting seat 1, increases the service life of the shock absorber and the stability of the damping adjustment of the shock absorber.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A damping adjustment structure of a shock absorber, characterized in that:

4. The diaphragm of claim 1, wherein the diaphragm is an annular structure formed on the top of the oil passage, and the diaphragm is a vertically extending core column connected to the diaphragm by threading. The core column is rotated to adjust the amount of oil flowing between the first oil passage hole and the second oil passage hole. An oil passage cavity is provided on the adjusting seat, and the oil passage cavity is in the shape of a cylinder with an opening at the top. An oil passage channel extending downward is provided at the bottom of the oil passage cavity, and one end of the first oil passage hole and one end of the second oil passage hole are connected to the oil passage cavity and the oil passage channel respectively. The core column is threadedly connected in the oil passage cavity and closes the oil passage cavity located above the first oil passage hole. An inverted cone head is provided at the lower end of the core column, and an oil passage gap is provided between the inverted cone head and the upper end of the oil passage channel. The upper end of the core column extends to the outside of the oil passage cavity and is fixedly mounted with a rotating seat. A groove is provided at the bottom of the rotating seat, and a groove is provided at the top of the adjusting seat. The cam is provided with a groove which extends along the radial direction of the core column, and a positioning pin is movably installed in the mounting groove, and the cam is provided with a card slot matching the positioning pin, and a positioning spring is provided in the groove for pushing the positioning pin to engage in the card slot; a movable column extending along the radial direction of the core column is fixedly installed at one end of the positioning pin away from the card slot, and a through hole is provided on the outer wall of the rotating seat for the movable column to pass through. A rotating shell is also vertically slidably installed on the outer side of the rotating seat, and an avoidance groove is provided on the rotating shell for one end of the movable column to pass through the through hole. A return spring is connected between the rotating seat and the rotating shell to make the avoidance groove deviate from one end of the through hole; when the avoidance groove deviates from one end of the through hole, the inner wall of the rotating shell blocks one end of the through hole and restricts the positioning pin from disengaging from the card slot.

2. The damping adjustment structure of a shock absorber according to claim 1, characterized in that: One end of the positioning pin that is inserted into the slot is in an arc shape.

3. The damping adjustment structure of a shock absorber according to claim 1, characterized in that: A plurality of the clamping grooves are evenly spaced around the circumference of the core column.

4. The damping adjustment structure of a shock absorber according to claim 1, characterized in that: The rotating seat is cylindrical and coaxially arranged with the core column; the rotating shell includes an annular holding portion sleeved on the outer circumferential surface of the rotating seat and a top cover fixedly installed on the upper end of the holding portion, the avoidance groove is located on the inner wall of the holding portion, the reset spring is supported between the top of the rotating seat and the top cover, and the lower end of the holding portion is provided with a limiting portion for preventing the rotating seat from escaping, and when the limiting portion contacts the rotating seat, the avoidance groove moves to above the through hole.

5. The damping adjustment structure of a shock absorber according to claim 4, characterized in that: A protruding positioning block is provided on the outer side of the rotating seat, a vertically extending sliding groove is provided on the inner wall of the holding portion, and the positioning block is slidably installed in the sliding groove.

6. The damping adjustment structure of a shock absorber according to claim 1, characterized in that: The outer side of the adjustment seat is provided with a protruding heat sink.

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