Length-adjustable shock absorber

Abstract

The utility model discloses a length-adjustable shock absorber, which relates to the technical field of shock absorbers and comprises a shock absorber body. And the adjusting assembly is used for adjusting the length of the shock absorber body, and the adjusting assembly comprises a plurality of inner threaded cylinders fixedly arranged on the upper surface of the sliding disc in a circumferential array and threaded columns rotationally arranged on the lower surface of the first mounting disc and corresponding to the inner threaded cylinders. According to the length-adjustable shock absorber, the corrugated telescopic pipe and the threaded jackscrews are arranged, the corrugated telescopic pipe can effectively protect the threaded columns, the threaded columns are prevented from making contact with the external environment, the situation that the threaded columns are rusted is avoided, the service life is prolonged, and the service life of the shock absorber is prolonged. Due to the arrangement of the threaded jackscrew, after the sliding disc is adjusted to a proper position, the threaded jackscrew can be tightened, so that the threaded jackscrew abuts against the oil cylinder, the sliding disc is effectively locked, and the stability of the adjusted sliding disc is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to shock absorber technical field especially relates to a length adjustable shock absorber. BACKGROUND

[0002] Shock absorber is used to restrain the shock and impact from the road when the spring rebounds after absorbing the shock.

[0003] The patent with the publication number CN215257567U in the prior art discloses a length-adjustable dustproof shock absorber, which comprises a handle rod and a rod cylinder, a rod cavity is arranged in the rod cylinder, an adjusting piece is arranged outside the rod cylinder, a plain bearing is arranged at one end of the handle rod, a spring is arranged between the adjusting piece and the plain bearing, a dustproof piece is arranged at one end of the rod cylinder corresponding to the plain bearing, a ring brush is arranged at one end of the dustproof piece, one end of the handle rod penetrates the ring brush and is inserted into the rod cavity, and the ring brush surrounds the handle rod.

[0004] The above-mentioned patent technology can adjust the length of the shock absorber through the adjusting piece, but in the actual adjustment process, the personnel need to manually rotate the adjusting piece, and because the adjusting piece and the cylinder are in threaded connection, the threads on the cylinder are directly exposed to the external environment, which can cause rust on the surface of the threads during long-term use, thereby affecting the rotation of the adjusting piece in the later period and affecting the service life. UTILITY MODEL CONTENTS

[0005] The utility model discloses a length-adjustable shock absorber, which aims to solve the technical problem of affecting the service life of the shock absorber as proposed in the background art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A length-adjustable shock absorber comprises:

[0008] The shock absorber body comprises an oil cylinder and a piston slidingly arranged on the inner wall of the oil cylinder, the bottom end of the piston is fixedly provided with a piston rod extending to the bottom end of the oil cylinder, the top end of the oil cylinder and the bottom end of the piston rod are respectively fixedly provided with a first mounting disc and a second mounting disc, the outer surface of the oil cylinder is slidingly provided with a sliding disc, the lower surface of the sliding disc is fixedly provided with a connecting ring, the surface of the piston rod is sleeved with a shock absorbing spring, and the two ends of the shock absorbing spring are respectively fixedly connected with the surface of the second mounting disc and the connecting ring.

[0009] The adjusting assembly is used for adjusting the length of the shock absorber body, and comprises a plurality of inner threaded cylinders fixedly arranged on the upper surface of the sliding disc in a circumferential array, and a threaded column rotatably arranged on the lower surface of the first mounting disc and corresponding to the inner threaded cylinders, the outer surface of the threaded column is in threaded connection with the inner wall of the inner threaded cylinder, and the adjusting assembly further comprises a rotating ring rotatably arranged on the outer surface of the first mounting disc and used for driving the plurality of threaded columns to rotate simultaneously.

[0010] In a preferred scheme, the first mounting disc is internally provided with an annular cavity, and the top ends of the plurality of threaded columns all extend to the inner wall of the annular cavity and are in rotational connection with the inner top wall of the annular cavity.

[0011] By arranging the annular cavity, the top ends of the threaded columns can extend to the inner wall of the annular cavity.

[0012] In a preferred scheme, the top end and the bottom end of the rotating ring are both provided with a first bearing, and the top end and the bottom end of the rotating ring are rotatably connected with the upper surface and the lower surface of the first mounting disc through the first bearings.

[0013] By arranging the first bearing, the rotating ring can smoothly rotate on the surface of the first mounting disc.

[0014] In a preferred scheme, the inner wall of the rotating ring is fixedly provided with an inner tooth ring, and the surfaces of the plurality of threaded columns are all fixedly provided with toothed discs, and the plurality of toothed discs are all in meshing connection with the inner tooth ring.

[0015] By arranging the inner tooth ring and the toothed discs, the inner tooth ring can be driven to rotate in the process of rotating the rotating ring, so as to drive the plurality of toothed discs to rotate simultaneously, and further drive the plurality of threaded columns to rotate simultaneously.

[0016] In a preferred scheme, the upper surface of the sliding disc is fixedly provided with a corrugated expansion pipe, and the corrugated expansion pipe is sleeved on the outer surfaces of the plurality of inner threaded cylinders.

[0017] By arranging the corrugated expansion pipe, the threaded columns can be effectively protected.

[0018] In a preferred embodiment, a second bearing is provided at the top end of the corrugated expansion tube, and the top end of the corrugated expansion tube is rotatably connected to the bottom end of the rotating ring through the second bearing.

[0019] By setting a second bearing, the top end of the corrugated expansion tube can rotate smoothly with the bottom end of the rotating ring.

[0020] In a preferred embodiment, the outer surface of the connecting ring has two threaded holes symmetrically formed, and the inner walls of both threaded holes are threaded with set screws.

[0021] By setting a threaded set screw, the sliding disc can be effectively locked to the surface of the oil cylinder.

[0022] In a preferred embodiment, an anti-slip sleeve is fixed to the outer ring surface of the rotating ring, and the anti-slip sleeve is made of elastic rubber.

[0023] By installing anti-slip sleeves, it is easier for personnel to rotate the rotating ring.

[0024] As can be seen from the above, the length-adjustable shock absorber provided by this utility model has the following technical effects.

[0025] Firstly, this utility model, by setting an adjustment component, allows the shock absorber to adjust its length during actual use. This is achieved by rotating the rotating ring, which in turn drives the internal gear ring to rotate. The rotation of the internal gear ring drives several gear discs to rotate simultaneously, which in turn drives several threaded cylinders to rotate simultaneously. The rotation of the threaded cylinders causes the internal threaded cylinder to move downwards, which in turn drives the sliding disc to move downwards. This allows for adjustment of the piston rod extension length, thus enabling quick and convenient adjustment of the shock absorber's body length, providing convenience for operators.

[0026] Secondly, this utility model incorporates a corrugated telescopic tube and a threaded set screw. The corrugated telescopic tube effectively protects several threaded posts, preventing them from contacting the external environment and thus avoiding corrosion, thereby extending their service life. Furthermore, the threaded set screw allows for tightening after the sliding disc is adjusted to the appropriate position, ensuring that the threaded set screw is pressed against the oil cylinder and effectively locking the sliding disc, thus guaranteeing its stability after adjustment. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of a length-adjustable shock absorber proposed in this utility model.

[0028] Figure 2 This is a side view of the adjustable-length shock absorber proposed in this utility model.

[0029] Figure 3This is a schematic cross-sectional view of the first mounting plate of an adjustable-length shock absorber proposed in this utility model.

[0030] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0031] Figure 5 This utility model Figure 3 Enlarged structural diagram at point B.

[0032] In the attached image:

[0033] 100. Shock absorber body; 101. Oil cylinder; 102. Piston rod; 103. First mounting plate; 104. Second mounting plate; 105. Sliding plate; 106. Connecting ring; 107. Shock absorber spring;

[0034] 200. Adjustment component; 201. Internal threaded cylinder; 202. Threaded column; 203. Rotating ring; 204. First bearing; 205. Internal gear ring; 206. Gear disc; 207. Corrugated telescopic tube; 208. Second bearing; 209. Threaded set screw; 2010. Anti-slip sleeve. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0036] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Reference Figures 1 to 5 An adjustable-length shock absorber includes:

[0038] The shock absorber body 100 includes an oil cylinder 101 and a piston slidably disposed on the inner wall of the oil cylinder 101. A piston rod 102 extending to the bottom end of the oil cylinder 101 is fixedly disposed at the bottom end of the piston. A first mounting plate 103 and a second mounting plate 104 are fixedly disposed at the top end of the oil cylinder 101 and the bottom end of the piston rod 102, respectively. A sliding plate 105 is slidably disposed on the outer surface of the oil cylinder 101. A connecting ring 106 is fixedly disposed on the lower surface of the sliding plate 105. A shock-absorbing spring 107 is sleeved on the surface of the piston rod 102. The two ends of the shock-absorbing spring 107 are fixedly connected to the surfaces of the second mounting plate 104 and the connecting ring 106, respectively.

[0039] The adjustment assembly 200 is used to adjust the length of the shock absorber body 100. The adjustment assembly 200 includes a plurality of internally threaded cylinders 201 fixed in a circumferential array on the upper surface of the sliding disk 105, and a threaded post 202 rotatably disposed on the lower surface of the first mounting disk 103 and corresponding to the internally threaded cylinders 201. The outer surface of the threaded post 202 is threadedly connected to the inner wall of the internally threaded cylinder 201. The adjustment assembly 200 also includes a rotating ring 203 rotatably disposed on the outer surface of the first mounting disk 103 for driving the plurality of threaded posts 202 to rotate simultaneously.

[0040] Reference Figure 3 and Figure 4 In a preferred embodiment, the first mounting plate 103 has an annular cavity inside, and the top ends of a plurality of threaded posts 202 extend to the inner wall of the annular cavity and are rotatably connected to the inner top wall of the annular cavity.

[0041] Specifically, by setting an annular cavity, the top end of the threaded post 202 can extend into the interior of the annular cavity.

[0042] Reference Figure 3 and Figure 4 In a preferred embodiment, the top and bottom ends of the rotating ring 203 are each provided with a first bearing 204, and the top and bottom ends of the rotating ring 203 are rotatably connected to the upper and lower surfaces of the first mounting plate 103 through the first bearing 204, respectively.

[0043] Specifically, by setting the first bearing 204, the rotating ring 203 can rotate smoothly on the surface of the first mounting plate 103.

[0044] Reference Figure 3 and Figure 4 In a preferred embodiment, an internal toothed ring 205 is fixedly provided on the inner wall of the rotating ring 203, and a toothed disc 206 is fixedly provided on the surface of a plurality of threaded columns 202, and the plurality of toothed discs 206 mesh with the internal toothed ring 205.

[0045] Specifically, by setting the internal gear ring 205 and the gear disk 206, the internal gear ring 205 can be driven to rotate during the rotation of the rotating ring 203, thereby driving several gear disks 206 to rotate simultaneously, and in turn driving several threaded columns 202 to rotate simultaneously.

[0046] Reference Figure 3 and Figure 4 In a preferred embodiment, a corrugated telescopic tube 207 is fixed on the upper surface of the sliding disk 105, and the corrugated telescopic tube 207 is sleeved on the outer surface of a plurality of internally threaded cylinders 201.

[0047] Specifically, by setting the corrugated expansion tube 207, the threaded post 202 can be effectively protected.

[0048] Reference Figure 1 and Figure 3 In a preferred embodiment, a second bearing 208 is provided at the top end of the corrugated expansion tube 207, and the top end of the corrugated expansion tube 207 is rotatably connected to the bottom end of the rotating ring 203 through the second bearing 208.

[0049] Specifically, by setting the second bearing 208, the top end of the corrugated telescopic tube 207 can rotate with the bottom end of the rotating ring 203, thereby enabling the rotating ring 203 to rotate smoothly.

[0050] In this invention, by setting an adjustment component 200, when the length of the shock absorber needs to be adjusted during actual use, the rotating ring 203 drives the internal gear ring 205 to rotate. The rotation of the internal gear ring 205 drives several gear discs 206 to rotate simultaneously, thereby driving several threaded columns 202 to rotate simultaneously. The rotation of the threaded columns 202 drives the internal threaded cylinder 201 to move downward, thereby driving the sliding disc 105 to move downward, thus realizing the adjustment of the extension length of the piston rod 102, and thus realizing the quick and convenient adjustment of the length of the shock absorber body 100, providing convenience for the operator.

[0051] Reference Figure 3 and Figure 5 In a preferred embodiment, the outer surface of the connecting ring 106 has two threaded holes symmetrically formed, and the inner walls of the two threaded holes are threaded with threaded set screws 209.

[0052] Specifically, by setting the threaded set screw 209, the sliding disc 105 can be effectively locked to the surface of the oil cylinder 101.

[0053] Reference Figure 3 and Figure 4 In a preferred embodiment, an anti-slip sleeve 2010 is fixedly provided on the outer ring surface of the rotating ring 203, and the anti-slip sleeve 2010 is made of elastic rubber.

[0054] Specifically, by setting up the anti-slip sleeve 2010, it is easier for personnel to rotate the rotating ring 203.

[0055] In this invention, the corrugated telescopic tube 207 and the threaded set screw 209 are provided. The corrugated telescopic tube 207 can effectively protect several threaded posts 202, preventing the threaded posts 202 from contacting the external environment, thereby preventing the threaded posts 202 from rusting and improving service life. Moreover, the threaded set screw 209 can be tightened after the sliding plate 105 is adjusted to a suitable position, so that the threaded set screw 209 abuts against the oil cylinder 101, effectively locking the sliding plate 105 and ensuring the stability of the sliding plate 105 after adjustment.

[0056] Working principle: In actual use, when the length of this shock absorber needs to be adjusted, rotating the rotating ring 203 drives the internal gear ring 205 to rotate. The rotation of the internal gear ring 205 drives several gear discs 206 to rotate simultaneously, which in turn drives several threaded cylinders 202 to rotate simultaneously. The rotation of the threaded cylinders 202 drives the internal threaded cylinder 201 to move downward, which in turn drives the sliding disc 105 to move downward, thereby adjusting the extension length of the piston rod 102 and thus achieving quick and convenient adjustment of the length of the shock absorber body 100. The section provides convenience for operators, and the corrugated expansion tube 207 can effectively protect several threaded posts 202, preventing the threaded posts 202 from contacting the external environment, thereby preventing the threaded posts 202 from rusting and improving service life. Moreover, the setting of the threaded set screw 209 can be tightened after the sliding plate 105 is adjusted to a suitable position, so that the threaded set screw 209 abuts against the oil cylinder 101, realizing effective locking of the sliding plate 105 and ensuring the stability of the sliding plate 105 after adjustment.

[0057] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A length-adjustable shock absorber, characterized in that, include: The shock absorber body (100) includes an oil cylinder (101) and a piston slidably disposed on the inner wall of the oil cylinder (101). A piston rod (102) extending to the bottom end of the oil cylinder (101) is fixedly disposed at the bottom end of the piston. A first mounting plate (103) and a second mounting plate (104) are fixedly disposed at the top end of the oil cylinder (101) and the bottom end of the piston rod (102), respectively. A sliding plate (105) is slidably disposed on the outer surface of the oil cylinder (101). A connecting ring (106) is fixedly disposed on the lower surface of the sliding plate (105). A shock-absorbing spring (107) is sleeved on the surface of the piston rod (102). The two ends of the shock-absorbing spring (107) are fixedly connected to the surfaces of the second mounting plate (104) and the connecting ring (106), respectively. An adjustment assembly (200) is used to adjust the length of the shock absorber body (100). The adjustment assembly (200) includes a plurality of internally threaded cylinders (201) fixed in a circumferential array on the upper surface of the sliding disk (105), and threaded posts (202) rotatably disposed on the lower surface of the first mounting disk (103) and corresponding to the internally threaded cylinders (201). The outer surface of the threaded post (202) is threadedly connected to the inner wall of the internally threaded cylinder (201). The adjustment assembly (200) also includes a rotating ring (203) rotatably disposed on the outer surface of the first mounting disk (103) for driving the plurality of threaded posts (202) to rotate simultaneously.

2. The length-adjustable shock absorber according to claim 1, characterized in that, The first mounting plate (103) has an annular cavity inside, and the top ends of several threaded posts (202) extend to the inner wall of the annular cavity and are rotatably connected to the inner top wall of the annular cavity.

3. The length-adjustable shock absorber according to claim 2, characterized in that, The top and bottom ends of the rotating ring (203) are each provided with a first bearing (204), and the top and bottom ends of the rotating ring (203) are rotatably connected to the upper and lower surfaces of the first mounting plate (103) through the first bearing (204).

4. The length-adjustable shock absorber according to claim 3, characterized in that, The inner wall of the rotating ring (203) is fixed with an internal toothed ring (205), and the surfaces of several threaded columns (202) are fixed with toothed discs (206), and the several toothed discs (206) mesh with the internal toothed ring (205).

5. The length-adjustable shock absorber according to claim 1, characterized in that, The upper surface of the sliding disc (105) is fixed with a corrugated telescopic tube (207), and the corrugated telescopic tube (207) is sleeved on the outer surface of a plurality of internally threaded cylinders (201).

6. The length-adjustable shock absorber according to claim 5, characterized in that, The top end of the corrugated telescopic tube (207) is provided with a second bearing (208), and the top end of the corrugated telescopic tube (207) is rotatably connected to the bottom end of the rotating ring (203) through the second bearing (208).

7. The length-adjustable shock absorber according to claim 1, characterized in that, The outer surface of the connecting ring (106) has two threaded holes symmetrically opened, and the inner walls of the two threaded holes are threaded with threaded set screws (209).

8. The length-adjustable shock absorber according to claim 1, characterized in that, The outer ring surface of the rotating ring (203) is fixed with an anti-slip sleeve (2010), and the anti-slip sleeve (2010) is made of elastic rubber.

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