A shock absorber

Abstract

The present invention proposes a shock absorber, wherein a damping friction cylinder is coaxially inserted into a lower support cylinder, a second flange is provided on the outer wall of the bottom end of the damping friction cylinder, the damping friction cylinder is installed through the upper cover, the second flange is located below the first flange and blocks each other; the damping friction cylinder is open at the bottom end and sealed at the top end, and a compressor spring is provided in the damping friction cylinder, one end of the compressor spring is connected to the bottom plate, and the other end is connected to the inner top end surface of the damping friction cylinder; a damping pressure ring and a damping washer are provided in the cavity enclosed by the outer wall of the damping friction cylinder, the inner wall of the lower support cylinder, the top end surface of the first flange and the bottom end surface of the upper support cylinder, and the damping pressure ring and the damping washer are coaxially sleeved on the outer wall of the damping friction cylinder. The shock absorber enhances the shock absorption effect by designing the existing damping washer in the lower support cylinder and installing it through a specific structure, and the damage problem caused by hard contact of components in the prior art will not occur when the shock absorber is tilted.

Description

Technical Field

[0001] The invention relates to a shock absorber. Background Art

[0002] In common shock absorbers, a damping sleeve is arranged between the damping friction cylinder and the sleeve. Once the shock absorber tilts, the damping sleeve between the two is easily squeezed during shock absorption, resulting in irregular deformation and reduced service life. At the same time, the damping friction cylinder is easily damaged due to mechanical contact and collision with the sleeve for a long time. Moreover, the shock absorption effect is not good if the damping sleeve is used alone to achieve shock absorption. Summary of the invention

[0003] The present invention provides a shock absorber, which enhances the shock absorption effect by designing an existing damping cushion sleeve in a lower support tube and installing it through a specific structure. When the shock absorber tilts, the damage problem caused by hard contact of components in the prior art will not occur.

[0004] The technical solution of the present invention is achieved in this way:

[0005] A shock absorber comprises a base plate 1, a sleeve 14, a lower support cylinder 3, a damping friction cylinder 7, an upper support cylinder 11, a compressor spring 15, a damping pressure ring 5 and a damping washer sleeve 13.

[0006] A sleeve 14 is installed on the bottom plate 1, and an upper cover 12 is installed on the top of the sleeve 14; a lower support tube 3 is coaxially installed in the sleeve 14, and a circle of first flange 16 is provided on the inner wall of the lower support tube 3, and a damping friction tube 7 is coaxially inserted into the lower support tube 3, and a circle of second flange 17 is provided on the outer wall of the bottom end of the damping friction tube 7, and the damping friction tube 7 is installed through the upper cover 12, and the second flange 17 is located below the first flange 16 and blocks each other; the upper support tube 11 is sleeved on the outer wall of the damping friction tube 7 and a circle of outer flange 18 is provided on the top of the upper support tube 11; the outer flange 18 is located below the upper cover 12 and blocks each other with the top surface of the lower support tube 3;

[0007] The damping friction cylinder 7 is open at the bottom and sealed at the top, and a compressor spring 15 is arranged in the damping friction cylinder 7, one end of the compressor spring 15 is connected to the bottom plate 1, and the other end is connected to the inner top surface of the damping friction cylinder 7; a damping pressure ring 5 and a damping gasket 13 are arranged above and below in the cavity enclosed by the outer wall of the damping friction cylinder 7, the inner wall of the lower support cylinder 3, the top surface of the first flange 16 and the bottom surface of the upper support cylinder 11, and the damping pressure ring 5 and the damping gasket 13 are coaxially sleeved on the outer wall of the damping friction cylinder 7.

[0008] Preferably, the inner wall of the damping pressure ring 5 is an inner inclined surface inclined inwardly, and the outer wall of the damping cushion sleeve 13 is an outer inclined surface inclined outwardly, and the damping pressure ring 5 and the damping cushion sleeve 13 are installed in a form of the inner inclined surface and the outer inclined surface fitting together.

[0009] Preferably, a damping spring 6 is provided between the top surface of the damping pressure ring 5 and the bottom end surface of the upper support cylinder 11. The damping spring 6 has a ring-shaped cross-section and is coaxially sleeved on the outer wall of the damping friction cylinder 7. The damping spring 6 is horizontal near the center part and is inclined upward near the outer part.

[0010] Preferably, the outer wall diameter of the damping friction cylinder 7 is gradually changed from large to small and then to large from top to bottom, that is, an arc-shaped portion with an inwardly concave cross-section is formed, and the damping pressure ring 5 and the damping washer 13 are located in the arc-shaped portion.

[0011] Preferably, the surface of the damping cushion sleeve 13 in contact with the damping friction cylinder 7 is in the shape of an arc-shaped convexity.

[0012] Preferably, an upper buffer pad 4 is provided between the first flange 16 and the second flange 17 and sleeved on the outer side wall of the damping friction cylinder 7 .

[0013] Preferably, a lower buffer pad 2 is provided at the top of the bottom plate 1 , and the lower buffer pad 2 is matched with the bottom end surface of the damping friction cylinder 7 .

[0014] Preferably, an inner ring nut 9 is provided at the top of the damping friction cylinder 7, and an adjusting bolt 8 is provided through the top of the inner ring nut 9, and the adjusting bolt 8 is inserted into the center hole of the damping friction cylinder 7; the outer wall of the adjusting bolt 8 is provided with a third flange 19 in the damping friction cylinder 7, and an adjusting nut 10 is installed on the adjusting bolt 8 below the third flange 19, and the top of the compressor spring 15 is installed on the adjusting nut 10.

[0015] Preferably, there is a gap between the upper support cylinder 11 and the damping friction cylinder 7 .

[0016] The beneficial effects produced by the present invention are:

[0017] (1) The damping pressure ring and the damping sleeve are arranged to fit together in an inclined surface. When the damping friction channel moves up and down, the friction stress between the damping sleeve and the damping sleeve is increased, thereby achieving the purpose of shock absorption. At the same time, the damping pressure ring can be squeezed up and down to deform the damping spring, thereby reducing the force and further reducing shock.

[0018] (2) By setting the outer wall of the damping friction cylinder to be in a concave arc shape and placing the damping pad sleeve on the arc-shaped portion, while the damping friction cylinder produces a shock-absorbing displacement, the contact extrusion force between the two can be increased, the friction can be increased, and the purpose of shock absorption can be achieved. Preferably, the side of the damping pad sleeve that contacts the damping friction cylinder can be designed to be in an arc-shaped convex shape to avoid the problem of poor contact effect between the two due to long-term wear and tear, so that longer use can be achieved and the shock absorption effect can be maintained.

[0019] (3) The damping pressure ring and the damping pad sleeve are designed to be inside the lower support tube. There is a very small gap between the upper support tube and the damping friction tube. The upper cover is also designed to have a gap with the damping friction tube. During the shock absorption process, even if the shock absorber is displaced to the left or right, the upper support tube can be adaptively tilted to mitigate the damage caused by the hard contact collision between the mechanical parts when tilting. Moreover, the overall shock absorption effect of the damping pressure ring and the damping pad sleeve will not change. On the contrary, the tilt will generate a greater extrusion force, which will generate a greater buffering stress through the damping spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figure 1The shock absorber shown includes a base plate 1, a sleeve 14, a lower support tube 3, a damping friction tube 7, an upper support tube 11, a compressor spring 15, a damping pressure ring 5 and a damping washer 13. The sleeve 14 is installed on the base plate 1, and the upper cover 12 is installed on the top of the sleeve 14; the lower support tube 3 is coaxially installed in the sleeve 14, and the inner wall of the lower support tube 3 is provided with a circle of first flange 16, the damping friction tube 7 is coaxially inserted into the lower support tube 3, and the outer wall of the bottom end of the damping friction tube 7 is provided with a circle of second flange 17, the damping friction tube 7 is installed through the upper cover 12, and the second flange 17 is located below the first flange 16 and blocks each other; the upper support tube 11 is sleeved on the outer wall of the damping friction tube 7 and the top of the upper support tube 11 is provided with a circle of outer flange 18; the outer flange 18 is located below the upper cover 12 and blocks each other with the top surface of the lower support tube 3.

[0024] The damping friction cylinder 7 is open at the bottom and sealed at the top, and a compressor spring 15 is arranged in the damping friction cylinder 7, one end of the compressor spring 15 is connected to the bottom plate 1, and the other end is connected to the inner top surface of the damping friction cylinder 7; a damping pressure ring 5 and a damping gasket 13 are arranged above and below in the cavity enclosed by the outer wall of the damping friction cylinder 7, the inner wall of the lower support cylinder 3, the top surface of the first flange 16 and the bottom surface of the upper support cylinder 11, and the damping pressure ring 5 and the damping gasket 13 are coaxially sleeved on the outer wall of the damping friction cylinder 7.

[0025] Among them, the inner wall of the damping pressure ring 5 of this embodiment is an inner inclined surface inclined inwardly, and the outer wall of the damping sleeve 13 is an outer inclined surface inclined outwardly, and the damping pressure ring 5 and the damping sleeve 13 are installed in the form of the inner inclined surface and the outer inclined surface fitting each other. A damping spring 6 is also arranged between the top surface of the damping pressure ring 5 and the bottom end surface of the upper support cylinder 11. The damping spring 6 has a ring-shaped cross section and is coaxially sleeved on the outer wall of the damping friction cylinder 7. The damping spring 6 is horizontal near the center part and is inclined upward near the outer part; the diameter of the outer wall of the damping friction cylinder 7 is gradually changing from large to small and then to large from top to bottom, that is, forming an arc-shaped portion with an inward concave cross section, and the damping pressure ring 5 and the damping sleeve 13 are in this arc-shaped portion; the side of the damping sleeve 13 that contacts the damping friction cylinder 7 is convex with an arc.

[0026] In this embodiment, an inner ring nut 9 is provided at the top of the damping friction cylinder 7, and an adjusting bolt 8 is provided at the top of the inner ring nut 9, and the adjusting bolt 8 is inserted into the central hole of the damping friction cylinder 7; the outer wall of the adjusting bolt 8 is provided with a third flange 19 in the damping friction cylinder 7, and an adjusting nut 10 is installed on the adjusting bolt 8 below the third flange 19, and the top of the compressor spring 15 is installed on the adjusting nut 10. The elastic force of the compressor spring 15 can be adjusted by adjusting the length of the bolt 8 extending into the damping friction cylinder 7 to meet the needs of different scenarios. Screw in the adjusting bolt 8 and extend it into the damping friction cylinder 7 to compress the compressor spring 15; otherwise, it is loosened and can be easily adjusted. Of course, the present invention is not limited to this type of compression mechanism, and any compression mechanism with adjustable tightness or non-adjustable tightness, and any mechanism that can play a role in spring expansion and contraction should be within the protection scope of the present invention.

[0027] The working principle of the present invention is as follows: adjust the insertion depth of the bolt and assemble the appropriate pressure of the compressor spring 15 required by the scene. In the initial state, the damping pressure ring 5 fits with the inner wall of the lower support tube 3, and the damping sleeve 13 fits with the outer side of the damping friction tube. When the overall mechanism is under pressure, the damping friction tube 7 moves downward, first compressing the compressor spring 15, and then the compressor spring 15 produces a certain buffering force to achieve the effect of shock absorption; secondly, since the outer wall interface of the damping friction tube 7 is an arc-shaped portion that is concave inward, and the damping sleeve 13 is in this position and fits with the outer wall of the damping friction tube 7, in the process of the damping friction tube 7 moving downward, the damping sleeve 13 is pushed outward due to the extrusion of the outer wall of the damping friction tube 7, increasing the damping friction force and achieving the purpose of buffering; at the same time, in the process of the damping sleeve 13 moving outward, the damping pressure ring 5 is pushed to produce an upward displacement, thereby giving the damping spring 6 an upward thrust to squeeze the upper support tube 11. Since the damping pad sleeve 13 is supported by the upper cover, the damping spring 6 has a ring-shaped cross-section and is coaxially sleeved on the outer wall of the damping friction cylinder 7. The damping spring 6 is horizontal near the center part and is inclined upward near the outer part. Therefore, a part of the inclined angle will produce stress deformation, which plays a role in reducing the buffering force. Therefore, the downward stress on the damping friction cylinder 7 is converted and reduced through multiple components, which achieves the purpose of shock absorption. Once the stress is eliminated, the restoring force of the compressor spring 15 makes the whole return to its initial state.

[0028] Since there is a small gap between the upper support tube 11 and the damping friction tube 7, the upper cover is also designed to have a gap with the damping friction tube 7. During the shock absorption process, even when the shock absorber is displaced to the left and right sides, the upper support tube 11 can be adaptively tilted to reduce the damage caused by the hard contact collision between the mechanical parts during the tilting, and the shock absorption effect of the overall damping pressure ring 5 and the damping pad sleeve 13 will not change. On the contrary, due to the tilting, a greater extrusion force is generated, and a greater buffering stress is generated through the damping spring 6. At the same time, an upper buffer pad 4 is provided between the first flange 16 and the second flange 17 and is sleeved on the outer wall of the damping friction tube 7; a lower buffer pad 2 is provided at the top of the bottom plate 1, and the lower buffer pad 2 cooperates with the bottom end surface of the damping friction tube 7 to reduce the hard contact of the parts and reduce the damage caused by the collision in the form of a buffer pad.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A shock absorber, characterized in that: The invention comprises a base plate (1), a sleeve (14), a lower support cylinder (3), a damping friction cylinder (7), an upper support cylinder (11), a compressor spring (15), a damping pressure ring (5) and a damping cushion sleeve (13). A sleeve (14) is installed on the bottom plate (1), and an upper cover (12) is installed on the top of the sleeve (14); a lower support tube (3) is coaxially installed in the sleeve (14), and a circle of first flanges (16) are provided on the inner wall of the lower support tube (3); a damping friction tube (7) is coaxially inserted into the lower support tube (3), and a circle of second flanges (17) are provided on the outer wall of the bottom end of the damping friction tube (7); the damping friction tube (7) is installed through the upper cover (12), and the second flange (17) is located below the first flange (16) and blocks each other; the upper support tube (11) is sleeved on the outer wall of the damping friction tube (7), and a circle of outer flanges (18) are provided on the top of the upper support tube (11); the outer flange (18) is located below the upper cover (12) and blocks each other with the top surface of the lower support tube (3); The damping friction cylinder (7) is open at the bottom and sealed at the top, and a compressor spring (15) is arranged inside the damping friction cylinder (7), one end of the compressor spring (15) is connected to the bottom plate (1), and the other end is connected to the inner top surface of the damping friction cylinder (7); a damping pressure ring (5) and a damping washer (13) are arranged in a cavity enclosed by the outer wall of the damping friction cylinder (7), the inner wall of the lower support cylinder (3), the top surface of the first flange (16) and the bottom surface of the upper support cylinder (11), and the damping pressure ring (5) and the damping washer (13) are coaxially sleeved on the outer wall of the damping friction cylinder (7); The inner side wall of the damping pressure ring (5) is an inner inclined surface inclined inwardly, and the outer side wall of the damping cushion sleeve (13) is an outer inclined surface inclined outwardly, and the damping pressure ring (5) and the damping cushion sleeve (13) are installed in a form of the inner inclined surface and the outer inclined surface being fitted together; A damping spring (6) is also provided between the top surface of the damping pressure ring (5) and the bottom end surface of the upper support cylinder (11); the damping spring (6) has a ring-shaped cross section and is coaxially sleeved on the outer wall of the damping friction cylinder (7); the damping spring (6) is horizontal near the center portion and is inclined upward near the outer portion.

2. A shock absorber according to claim 1, characterized in that: The diameter of the outer wall of the damping friction cylinder (7) changes gradually from large to small and then to large from top to bottom, i.e., an arc-shaped portion with an inwardly concave cross section is formed, and the damping pressure ring (5) and the damping washer (13) are located in the arc-shaped portion.

3. A shock absorber according to claim 1, characterized in that: The surface of the damping cushion sleeve (13) that contacts the damping friction cylinder (7) is in the shape of an arc-shaped convexity.

4. A shock absorber according to claim 1, characterized in that: An upper buffer pad (4) is provided between the first flange (16) and the second flange (17) and sleeved on the outer side wall of the damping friction cylinder (7).

5. A shock absorber according to claim 1, characterized in that: A lower buffer pad (2) is provided at the top end of the bottom plate (1), and the lower buffer pad (2) is matched with the bottom end surface of the damping friction cylinder (7).

6. A shock absorber according to claim 1, characterized in that: An inner ring nut (9) is provided at the top end of the damping friction cylinder (7), and an adjusting bolt (8) is provided through the top end of the inner ring nut (9), and the adjusting bolt (8) is inserted into the central hole of the damping friction cylinder (7); a third flange (19) is provided on the outer wall of the adjusting bolt (8) in the damping friction cylinder (7), and an adjusting nut (10) is installed on the adjusting bolt (8) below the third flange (19), and the top end of the compressor spring (15) is installed on the adjusting nut (10).

7. A shock absorber according to claim 1, characterized in that: There is a gap between the upper support cylinder (11) and the damping friction cylinder (7).

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