Noise reduction structure of shock absorber

Abstract

The utility model discloses a shock absorber noise reduction structure, which relates to the technical field of shock absorbers, and comprises a spring sleeve, a movable rod and a spring, an end cover and a noise reduction assembly are further included. The end cover is rotationally connected to the top of the spring sleeve; the noise reduction assembly comprises an elastic cushion, an annular cavity, a movable plate, a fixed cylinder, a placement plate, a connecting rod and a supporting spring; the elastic cushion is fixed on the placing plate; the elastic cushion is a sponge block, and lubricating grease is stored in the elastic cushion; a small hole communicated with the annular cavity is formed in the fixing cylinder, and the annular cavity is formed in the spring sleeve; the spring sleeve is communicated with the annular cavity through a plurality of small circular holes; the movable plate is slidably connected in the spring sleeve; one end of the spring is fixed at the bottom of the movable plate; the placing plate and the movable plate are fixedly connected through a connecting rod; the supporting spring is fixed between the movable plate and the spring sleeve; friction generated by contact between the spring and the spring sleeve can be reduced in the automobile running process, noise generated by friction is further eliminated, and meanwhile abrasion of the spring is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, in particular to a noise reduction structure for a shock absorber. Background Art

[0002] Shock absorbers are installed inside the suspension systems of most automobiles. The shock absorption system of an automobile is jointly composed of a spring and a shock absorber. The shock absorber is not used to support the weight of the vehicle body, but to suppress the oscillation when the spring rebounds after absorbing shock and to absorb the energy of road impact. The spring plays a role in buffering the impact, changing the "large-energy single impact" into "small-energy multiple impacts", and the shock absorber gradually reduces the "small-energy multiple impacts".

[0003] During the driving process of an automobile, the spring of the shock absorber will continuously move inside the spring sleeve, resulting in contact and friction between the spring inside the shock absorber and the side wall of the spring sleeve. The friction between the spring and the spring sleeve will generate noise, which not only affects the comfort of riding in the automobile, but also affects the service life of the shock absorber due to wear. Content of the Utility Model

[0004] By providing a noise reduction structure for a shock absorber in an embodiment of the present application, the problem in the prior art that during the driving process of an automobile, the spring of the shock absorber will continuously move inside the spring sleeve, resulting in contact and friction between the spring inside the shock absorber and the side wall of the spring sleeve, thereby generating noise, and the generated noise not only affects the comfort of riding in the automobile, but also affects the service life of the shock absorber due to wear, is solved. It is realized that during the driving process of an automobile, the friction generated by the contact between the spring and the spring sleeve is reduced, thereby eliminating the noise generated by the friction, and at the same time reducing the wear of the spring.

[0005] An embodiment of the present application provides a noise reduction structure for a shock absorber, including a spring sleeve, a movable rod and a spring. The spring is located inside the spring sleeve, and the movable rod is slidably connected inside the spring sleeve;

[0006] It further includes an end cap and a noise reduction component;

[0007] The end cap is rotatably connected to the top of the spring sleeve;

[0008] The noise reduction component includes an elastic pad, an annular cavity, a movable plate, a fixed cylinder, a placement plate, a connecting rod and a support spring;

[0009] The elastic pad is fixed on the placement plate. The placement plate is located inside the fixed cylinder, and a round hole is opened at the bottom of the fixed cylinder;

[0010] The elastic pad is a sponge block, and lubricating grease is stored inside the elastic pad;

[0011] A plurality of small holes communicating with the annular cavity are opened on the side wall of the fixed cylinder, and an annular cavity is opened inside the spring sleeve;

[0012] The spring sleeve and the annular cavity are communicated through a plurality of circular small holes;

[0013] The movable plate is slidably connected inside the spring sleeve, and one end of the spring is fixed to the bottom of the movable plate;

[0014] The placement plate and the movable plate are fixedly connected by a connecting rod;

[0015] The support spring is fixed between the movable plate and the spring sleeve.

[0016] Furthermore, a circular opening is provided at the top of the spring sleeve, and the end cover is fixedly connected inside the circular opening at the top of the spring sleeve by threaded connection;

[0017] The fixed cylinder is a hollow cylindrical cylinder with an open top, and the diameter of the elastic pad is the same as the diameter of the inner chamber of the fixed cylinder.

[0018] Furthermore, a connection buckle is fixed to the end of the movable rod;

[0019] The connection buckle fixes the movable rod to the vehicle by bolts;

[0020] The same connection buckle is fixed to the top of the end cover, and the connection buckle is used to fixedly connect the spring sleeve to the vehicle.

[0021] Furthermore, a cylindrical block is fixed to the bottom of the end cover, and the cylindrical block contacts the upper side of the elastic pad;

[0022] The bottom of the cylindrical block extends into the fixed cylinder, and the cylindrical block can squeeze the elastic pad when the movable rod moves upward.

[0023] Furthermore, the length of the connecting rod is less than the depth of the inner chamber of the fixed cylinder;

[0024] There are a plurality of support springs, and the support springs are fixedly arranged around the connecting rod in a surrounding manner;

[0025] Both ends of the support spring are respectively fixed to the top of the movable plate and the bottom of the spring sleeve.

[0026] Furthermore, a cylindrical chamber is provided inside the spring sleeve;

[0027] A push plate is fixed to the end of the movable rod, and the push plate is located in the cylindrical chamber of the spring sleeve;

[0028] The push plate contacts the inner side wall of the spring sleeve, and the diameter of the movable rod is smaller than the diameter of the push plate.

[0029] Furthermore, the diameter of the placement plate is smaller than the diameter of the elastic pad, and the bottom of the placement plate fits against the bottom surface of the fixed cylinder;

[0030] The placement plate is a circular thin plate, and the placement plate moves upward when the spring is compressed to squeeze the elastic pad;

[0031] The side wall of the movable plate fits against the inner side wall of the spring sleeve.

[0032] Furthermore, a groove is provided at the bottom of the elastic pad, and corresponding convex blocks are fixed on the placement plate. The convex blocks can be clamped in the groove at the bottom of the elastic pad to fix the elastic pad on the placement plate.

[0033] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0034] The movable rod moves in the spring sleeve to compress the spring. After the spring is subjected to pressure, it moves upward to push the movable plate to slide upward. The movable plate pushes the placement plate through the connecting rod to squeeze the elastic pad, and the lubricating grease stored in the elastic pad is squeezed out. The lubricating grease flows through the annular cavity to the inside of the spring sleeve to lubricate the spring, effectively solving the problem that in the prior art, during the driving of an automobile, noise is generated due to the friction between the spring in the shock absorber and the side wall of the spring sleeve, which not only affects the comfort of riding in the automobile but also causes wear of the spring. Furthermore, it realizes reducing the friction generated by the contact between the spring and the spring sleeve, eliminating the noise generated by the friction, and at the same time reducing the wear of the spring. Description of the Drawings

[0035] Figure 1 It is a schematic diagram of the overall structure of a shock absorber noise reduction structure of the present utility model;

[0036] Figure 2 It is a Figure 1 cross-sectional structure schematic diagram of a shock absorber noise reduction structure of the present utility model;

[0037] Figure 3 It is a schematic diagram of the connection relationship structure between the elastic pad and the fixed cylinder of a shock absorber noise reduction structure of the present utility model;

[0038] Figure 4 It is a Figure 1 top view cross-sectional structure schematic diagram of a shock absorber noise reduction structure of the present utility model;

[0039] Figure 5 It is a schematic diagram of the connection relationship structure between the end cover and the cylindrical block of a shock absorber noise reduction structure of the present utility model;

[0040] Figure 6 It is a schematic diagram of the specific structure of the fixed cylinder of a shock absorber noise reduction structure of the present utility model;

[0041] Figure 7 It is a schematic diagram of the connection relationship structure between the movable plate and the spring sleeve of a shock absorber noise reduction structure of the present utility model;

[0042] Figure 8 This is a schematic diagram of the specific structure of the placement plate of a shock absorber noise reduction structure of the present utility model.

[0043] In the figure: 101, connecting buckle; 102, spring sleeve; 103, end cap; 104, movable rod; 105, spring; 106, push plate;

[0044] 200, noise reduction component; 201, elastic pad; 202, annular cavity; 203, movable plate; 204, fixed cylinder; 205, placement plate; 206, connecting rod; 207, cylindrical block; 208, support spring. Detailed implementation manners

[0045] To facilitate the understanding of the present utility model, the present application will be described more comprehensively with reference to the relevant drawings; the preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0046] It should be noted that the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs; the terms used in the description of the present utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model; the term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0048] As Figures 1 to 6 shown, the present application provides a shock absorber noise reduction structure, including a spring sleeve 102, a movable rod 104 and a spring 105. The spring 105 is located inside the spring sleeve 102, and the movable rod 104 is slidably connected inside the spring sleeve 102; it also includes an end cap 103 and a noise reduction component

[0049] 200; the end cap 103 is rotatably connected to the top of the spring sleeve 102; the noise reduction component

[0050] 200 includes an elastic pad 201, an annular cavity 202, a movable plate 203, a fixed cylinder 204, a placement plate 205, a connecting rod 206, and a support spring 208; the elastic pad 201 is fixed on the placement plate 205, the placement plate 205 is located inside the fixed cylinder 204, and a circular hole is provided at the bottom of the fixed cylinder 204; the elastic pad 201 is a sponge block, and lubricating grease is stored in the elastic pad 201; a plurality of small holes communicating with the annular cavity 202 are provided on the side wall of the fixed cylinder 204, and the annular cavity 202 is provided inside the spring sleeve 102; the spring sleeve 102 and the annular cavity 202 are communicated through a plurality of circular small holes; the movable plate 203 is slidably connected inside the spring sleeve 102, and one end of the spring 105 is fixed to the bottom of the movable plate 203; the placement plate 205 and the movable plate 203 are fixedly connected through the connecting rod 206; the support spring 208 is fixed between the movable plate 203 and the spring sleeve 102.

[0051] Preferably, a circular opening is provided at the top of the spring sleeve 102, and the elastic pad 201 is placed into the fixed cylinder 204 through the circular opening at the top of the spring sleeve 102. The end cap 103 is fixedly connected to the circular opening at the top of the spring sleeve 102 by means of a threaded connection. When it is necessary to replenish the lubricating grease in the elastic pad 201, the spring sleeve 102 is removed by rotating the spring sleeve 102, thereby facilitating the replenishment of the lubricating grease in the elastic pad 201; the fixed cylinder 204 is a hollow cylindrical cylinder with an open top, the diameter of the elastic pad 201 is the same as the diameter of the inner cavity of the fixed cylinder 204, and the elastic pad 201 is in contact with the inner wall of the fixed cylinder 204. When the elastic pad 201 is squeezed, the lubricating grease stored in the elastic pad 201 can seep out and enter the annular cavity 202 from the side wall of the fixed cylinder 204.

[0052] Preferably, a connecting buckle 101 is fixed to the end of the movable rod 104; the connecting buckle 101 fixes the movable rod 104 to the vehicle by means of bolts; the same connecting buckle 101 is fixed to the top of the end cap 103, and the connecting buckle 101 is used to fixedly connect the spring sleeve 102 to the vehicle.

[0053] Preferably, a cylindrical block 207 is fixed to the bottom of the end cap 103, and the cylindrical block 207 is in contact with the upper side of the elastic pad 201; the bottom of the cylindrical block 207 extends into the fixed cylinder 204, and the cylindrical block 207 can squeeze the elastic pad 201 when the movable rod 104 moves upward, and squeeze out the lubricating grease stored in the elastic pad 201.

[0054] Preferably, the length of the connecting rod 206 is less than the depth of the inner chamber of the fixed cylinder 204. When the movable plate 203 drives the placing plate 205 to move upward, since the length of the connecting rod 206 is less than the depth of the fixed cylinder 204, there is a certain distance between the placing plate 205 and the cylindrical block 207 when the movable plate 203 contacts the bottom of the spring sleeve 102, so as to avoid squeezing out all the lubricating grease stored in the elastic pad 201 at one time. There are multiple support springs 208, and the support springs 208 are circumferentially fixed around the connecting rod 206. The two ends of the support spring 208 are respectively fixed to the top of the movable plate 203 and the bottom of the spring sleeve 102. The support spring 208 plays a supporting role for the movable plate 203. The support spring 208 can offset a part of the elastic force of the spring 105. When the vehicle is in a stationary state, a certain gap can be left between the movable plate 203 and the bottom of the elastic sleeve, so as to avoid the continuous extrusion of the elastic pad 201 and cause all the stored lubricating grease to flow out.

[0055] Preferably, a cylindrical chamber is provided inside the spring sleeve 102. A push plate 106 is fixed to the end of the movable rod 104, and the push plate 106 is located in the cylindrical chamber of the spring sleeve 102. The push plate 106 contacts the inner side wall of the spring sleeve 102, and the push plate 106 can slide inside the spring sleeve 102. Lubricating grease can flow into the cylindrical chamber inside the spring sleeve 102 from the round hole on the side wall of the spring sleeve 102. The lubricating grease can lubricate the push plate 106 during the driving process of the vehicle, thereby reducing the friction between the push plate 106 and the elastic sleeve. The diameter of the movable rod 104 is smaller than the diameter of the push plate 106, so that the push plate 106 can be clamped inside the spring sleeve 102, thereby keeping the movable rod 104 and the spring sleeve 102 connected.

[0056] Preferably, the diameter of the placing plate 205 is smaller than the diameter of the elastic pad 201. When the placing plate 205 squeezes the elastic pad 201, the contact area between the elastic pad 201 and the placing plate 205 is small, so that the pressure received by the elastic pad 201 is relatively concentrated, which is convenient for squeezing out the lubricating grease stored in the elastic pad 201. The bottom of the placing plate 205 is attached to the bottom surface of the fixed cylinder 204. The placing plate 205 is a circular thin plate. The placing plate 205 moves upward when the spring 105 is compressed to squeeze the elastic pad 201. The side wall of the movable plate 203 is attached to the inner side wall of the spring sleeve 102. When the movable plate 203 slides inside the spring sleeve 102, the lubricating grease entering the spring sleeve 102 can lubricate the movable plate 203, thereby reducing the friction between the inner wall of the spring sleeve 102 and the movable plate 203.

[0057] Preferably, a groove is formed at the bottom of the elastic pad 201, and corresponding bumps are fixed on the placing plate 205. The bumps can make the connection between the elastic pad 201 and the placing plate 205 firmer. The elastic pad 201 is fixed on the placing plate 205 by clamping the bumps in the groove at the bottom of the elastic pad 201. When the elastic pad 201 is squeezed, the elastic pad 201 can be fixed to prevent the elastic pad 201 from falling off the placing plate 205.

[0058] When the shock absorber noise reduction structure of the embodiment of the present application is actually used:

[0059] During the driving of the vehicle, the movable rod 104 will continuously reciprocate in the spring sleeve 102. When the movable rod 104 moves upward, it will push the spring 105 upward through the push plate 106 to make the spring 105 compressed and deformed. At the same time, after being pressured, the spring 105 will drive the movable plate 203 to slide in the spring sleeve 102, and then drive the placing plate 205 to move upward. Under the combined action of the placing plate 205 and the cylindrical block 207, the elastic pad 201 is squeezed, and the lubricating grease stored in the elastic pad 201 is extruded. The extruded lubricating grease seeps into the annular cavity 202 from the holes on the side wall of the fixed cylinder 204. The lubricating grease flows in the annular cavity 202 and flows out from the holes on the inner side of the spring sleeve 102. When the spring 105 moves in the spring sleeve 102, it will contact the lubricating grease, thereby reducing the friction between the spring 105 and the side wall of the spring sleeve 102 to achieve the effect of reducing noise, and at the same time reducing the wear of the spring 105, thereby improving the service life of the shock absorber.

[0060] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A shock absorber noise reduction structure, comprising a spring sleeve (102), a movable rod (104) and a spring (105), wherein the spring (105) is located inside the spring sleeve (102), and the movable rod (104) is slidably connected inside the spring sleeve (102); It is characterized in that It further comprises an end cap (103) and a noise reduction component (200); The end cap (103) is rotatably connected to the top of the spring sleeve (102); The noise reduction component (200) comprises an elastic pad (201), an annular cavity (202), a movable plate (203), a fixed cylinder (204), a placement plate (205), a connecting rod (206) and a support spring (208); The elastic pad (201) is fixed on the placement plate (205), the placement plate (205) is located inside the fixed cylinder (204), and a circular hole is provided at the bottom of the fixed cylinder (204); The elastic pad (201) is a sponge block, and lubricating grease is stored inside the elastic pad (201); A plurality of small holes communicating with the annular cavity (202) are provided on the side wall of the fixed cylinder (204), and an annular cavity (202) is provided inside the spring sleeve (102); The spring sleeve (102) and the annular cavity (202) are communicated through a plurality of circular small holes; The movable plate (203) is slidably connected inside the spring sleeve (102), and one end of the spring (105) is fixed to the bottom of the movable plate (203); The placement plate (205) and the movable plate (203) are fixedly connected by a connecting rod (206); the support spring (208) is fixed between the movable plate (203) and the spring sleeve (102).

2. The noise reduction structure of a shock absorber according to claim 1, characterized in that, A circular opening is provided at the top of the spring sleeve (102), and the end cap (103) is fixedly connected inside the circular opening at the top of the spring sleeve (102) by threaded connection; The fixed cylinder (204) is a hollow cylindrical cylinder with an open top, and the diameter of the elastic pad (201) is the same as the diameter of the inner chamber of the fixed cylinder (204).

3. The noise reduction structure of a shock absorber according to claim 1, characterized in that, A connection buckle (101) is fixed to the end of the movable rod (104); The connection buckle (101) fixes the movable rod (104) to the vehicle by bolts; The same connection buckle (101) is fixed to the top of the end cap (103), and the connection buckle (101) is used to fixedly connect the spring sleeve (102) to the vehicle.

4. The noise reduction structure of a shock absorber according to claim 2, characterized in that, A cylindrical block (207) is fixed to the bottom of the end cap (103), and the cylindrical block (207) contacts the upper side of the elastic pad (201); The bottom of the cylindrical block (207) extends into the fixed cylinder (204), and the cylindrical block (207) can squeeze the elastic pad (201) when the movable rod (104) moves upward.

5. The noise reduction structure of a shock absorber according to claim 1, characterized in that, The length of the connecting rod (206) is less than the depth of the inner chamber of the fixed cylinder (204); There are a plurality of support springs (208), and the support springs (208) are fixed around the connecting rod (206) in a surrounding manner; Both ends of the support spring (208) are respectively fixed to the top of the movable plate (203) and the bottom of the spring sleeve (102).

6. The noise reduction structure of a shock absorber according to claim 1, characterized in that, A cylindrical chamber is provided inside the spring sleeve (102); A push plate (106) is fixed to the end of the movable rod (104), and the push plate (106) is located in the cylindrical chamber of the spring sleeve (102); The push plate (106) contacts the inner side wall of the spring sleeve (102), and the diameter of the movable rod (104) is smaller than the diameter of the push plate (106).

7. The noise reduction structure of a shock absorber according to claim 1, wherein The diameter of the placement plate (205) is smaller than the diameter of the elastic pad (201), and the bottom of the placement plate (205) is in contact with the bottom surface of the fixed cylinder (204); The placement plate (205) is a circular thin plate, and the placement plate (205) moves upward when the spring (105) is compressed to squeeze the elastic pad (201). The side wall of the movable plate (203) is in contact with the inner side wall of the spring sleeve (102).

8. The noise reduction structure of a shock absorber according to claim 7, characterized in that, A groove is formed at the bottom of the elastic pad (201), and corresponding convex blocks are fixed on the placement plate (205). The convex blocks can be clamped in the groove at the bottom of the elastic pad (201) to fix the elastic pad (201) on the placement plate (205).

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