Shock absorber with high sealing performance

Abstract

The utility model relates to the technical field of shock absorption devices, in particular to a shock absorber with high sealing performance, which is characterized in that an extension edge is integrally formed at the lower part of a shell, a plurality of fixing blocks are distributed on the outer ring wall of the extension edge at equal round corners, guide rods are movably arranged on the fixing blocks in a penetrating manner, the lower ends of the guide rods are fixedly connected with a connecting plate, and springs are respectively and movably sleeved on the guide rods; the two ends of the spring are fixedly connected with the fixing block and the connecting plate correspondingly, the damping rubber cushion block is fixedly arranged in the shell, an extrusion plate is fixedly arranged at the upper end of the movable rod, the upper portion of the extrusion plate abuts against the damping rubber cushion block, and a sealing mechanism connected with the movable rod is arranged in the shell. A vacuum cavity is formed in the shell and located between the extrusion plate and the sealing mechanism, so that the interior of the shell has high sealing performance, dust and the like can be prevented from affecting the running smoothness of components in the shell in the using process, and external air can be prevented from entering the interior of the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbing devices, in particular to a shock absorber with high sealing performance. Background Art

[0002] Shock absorbers can be used to suppress the vibration caused by the rebound of the spring after absorbing shock and the impact from the road. Although they can play a shock-absorbing role in both compression and extension strokes, this process not only easily causes external dust and impurities to enter the shell and affect the smooth operation of internal components, but also easily allows external air to enter and affect the internal pressure state of the shell. Therefore, a highly sealed shock absorber is urgently needed. Utility Model Content

[0003] The purpose of the present invention is to provide a shock absorber with a reasonable design and high sealing performance to solve the above problems in view of the defects and shortcomings of the existing technology.

[0004] In order to achieve the above object, the utility model adopts the following technical solution: it comprises a shell, a connecting plate and a movable rod, a connecting plate is suspended below the shell, a movable rod is fixedly arranged on the connecting plate, and the movable rod is movably arranged in the shell;

[0005] It also contains:

[0006] An extended edge is integrally formed at the lower portion of the housing, and a plurality of fixed blocks are distributed on the outer ring wall of the extended edge at equal rounded corners. A guide rod is movably provided on the fixed block, and the lower end of the guide rod is fixedly connected to the connecting plate;

[0007] Springs, wherein there are multiple springs, each movably sleeved on multiple guide rods, and both ends of the spring are fixedly connected to the fixed block and the connecting plate respectively;

[0008] A damping rubber pad is fixedly arranged in the shell, an extrusion plate is fixedly arranged on the upper end of the movable rod, the upper part of the extrusion plate is arranged to conflict with the damping rubber pad, a sealing mechanism connected to the movable rod is provided in the shell, and a vacuum chamber is located between the extrusion plate and the sealing mechanism in the shell.

[0009] Preferably, the sealing mechanism comprises:

[0010] A sealing rubber block, wherein the sealing rubber block is fixedly sleeved on the movable rod and is movably contacted with the inner wall of the shell, and deformation grooves are provided on both the upper and lower sides of the sealing rubber block;

[0011] The mounting frame is clamped in the extension edge and fixed in the sealing rubber block. A deformation reserved cavity is provided between the sealing rubber block and the extension edge.

[0012] Preferably, the lower portion of the sealing rubber block passes through the housing and is exposed at the extended edge.

[0013] Preferably, a limit plate is fixedly provided on the upper end of the guide rod.

[0014] Preferably, a rubber ring is fixedly provided at the lower portion of the limiting plate, and the rubber ring is fixedly sleeved on the guide rod, and the lower portion of the rubber ring is arranged to abut against the fixed block.

[0015] Compared with the prior art, the beneficial effect of the present invention is that the highly sealed shock absorber described in the present invention can make the interior of its shell have a higher sealing performance, which can not only prevent dust and the like from affecting the smoothness of the operation of the internal components of the shell during use, but also prevent outside air from entering the interior. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 It is an exploded view of the parts of the housing, damping rubber pad, sealing rubber block and mounting frame in the utility model.

[0018] Figure 3 yes Figure 2 Enlarged view of part A in .

[0019] Figure 4 It is an exploded view of the parts of the fixed block, guide rod, spring, limit plate and rubber ring in the utility model.

[0020] Description of reference numerals:

[0021] Shell 1, connecting plate 2, movable rod 3, extension edge 4, fixed block 5, guide rod 6, spring 7, damping rubber pad 8, extrusion plate 9, sealing mechanism 10, sealing rubber block 10-1, deformation groove 10-2, mounting frame 10-3, deformation reserved cavity 10-4, limit plate 11, rubber ring 12. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. The preferred embodiments in the description are only used as examples. All other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.

[0023] like Figure 1-Figure 4 As shown, this specific embodiment adopts the following technical solution: it includes a shell 1, a connecting plate 2 and a movable rod 3, the connecting plate 2 is suspended below the shell 1, the movable rod 3 is fixedly provided on the connecting plate 2, and the movable rod 3 is movably provided in the shell 1;

[0024] It also contains:

[0025] The extended edge 4 is integrally formed at the lower part of the housing 1. Several fixed blocks 5 are distributed on the outer ring wall of the extended edge 4 with equal rounded corners. A guide rod 6 is movably provided on the fixed block 5. The lower end of the guide rod 6 is fixedly connected to the connecting plate 2. A limit plate 11 is fixedly provided on the upper end of the guide rod 6. The limit plate 11 can realize the limit between the guide rod 6 and the fixed block 5;

[0026] Spring 7, there are several springs 7, which are movably sleeved on several guide rods 6, and the two ends of the spring 7 are fixedly connected to the fixed block 5 and the connecting plate 2 respectively. A rubber ring 12 is fixedly provided at the lower part of the limit plate 11, and the rubber ring 12 is fixedly sleeved on the guide rod 6. The lower part of the rubber ring 12 is set in conflict with the fixed block 5. The rubber ring 12 can achieve force buffering between the limit plate 11 and the fixed block 5, avoiding the spring 7 causing direct collision between the limit plate 11 and the fixed block 5 during the extension and contraction process, thereby causing damage;

[0027] A damping rubber pad 8 is fixedly provided in the housing 1. An extrusion plate 9 is fixedly provided on the upper end of the movable rod 3. The upper portion of the extrusion plate 9 is arranged to abut against the damping rubber pad 8. A sealing mechanism 10 connected to the movable rod 3 is provided in the housing 1. A vacuum chamber is provided in the housing 1 between the extrusion plate 9 and the sealing mechanism 10.

[0028] The sealing mechanism 10 comprises:

[0029] A sealing rubber block 10-1 is fixedly sleeved on the movable rod 3 and is movably contacted with the inner wall of the housing 1. Deformation grooves 10-2 are formed on both the upper and lower sides of the sealing rubber block 10-1;

[0030] The mounting frame 10-3 is clamped in the extension edge 4, and the mounting frame 10-3 is fixedly set in the sealing rubber block 10-1. A deformation reserved cavity 10-4 is provided between the sealing rubber block 10-1 and the extension edge 4. The lower part of the sealing rubber block 10-1 passes through the shell 1 and is exposed to the extension edge 4. When the spring 7 is compressed to a large extent during the shock absorption process, the lower part of the sealing rubber block 10-1 will conflict with the connecting plate 2, and the buffering effect of the sealing rubber block 10-1 is used to improve the shock absorption effect of the shock absorber.

[0031] When using the present invention, the connecting plate 2 will drive the guide rod 6 to move up and down and rely on the expansion and contraction of the spring 7 to offset the vibration force. At the same time, the connecting plate 2 will also drive the extrusion plate 9 to reciprocate and extrude the damping rubber pad 8 through the movable rod 3, so that the spring 7 can generate a damping force on it during the expansion and contraction process, thereby achieving a better shock absorption effect. In this process, the deformation groove 10-2 opened on the sealing rubber block 10-1 can make the sealing rubber block 10-1 affected by the movable rod 3, so that its center position can produce a larger deformation than the edge position. Without affecting the shock absorption effect, the movable amount between the sealing rubber block 10-1 and the inner wall of the shell 1 is reduced, and the sealing between the sealing rubber block 10-1 and the shell 1 is improved. In addition, the setting of the mounting frame 10-3 can also prevent dust and air from entering the interior of the shell 1.

[0032] After adopting the above structure, the beneficial effects of this specific embodiment are as follows:

[0033] 1. The cooperation of the extended edge 4, the damping rubber pad 8 and the sealing mechanism 10 can ensure a high degree of sealing inside the housing 1, which can not only prevent dust and other substances from affecting the smooth operation of the internal components of the housing 1 during use, but also prevent outside air from entering the interior;

[0034] 2. The rubber ring 12 can achieve force buffering between the limit plate 11 and the fixed block 5, thereby preventing the limit plate 11 and the fixed block 5 from directly colliding and causing damage during the extension and contraction of the spring 7.

[0035] For those skilled in the art, they can modify the technical solutions described in the aforementioned embodiments and make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. A shock absorber with high sealing performance, comprising a housing (1), a connecting plate (2) and a movable rod (3), wherein the connecting plate (2) is suspended below the housing (1), the movable rod (3) is fixedly arranged on the connecting plate (2), and the movable rod (3) is movably arranged in the housing (1); Features: It also contains: An extended edge (4), wherein the extended edge (4) is integrally formed at the lower portion of the shell (1), and a plurality of fixed blocks (5) are distributed on the outer ring wall of the extended edge (4) at equal fillets, and a guide rod (6) is movably provided on the fixed block (5), and the lower end of the guide rod (6) is fixedly connected to the connecting plate (2); Springs (7), wherein there are a plurality of springs (7), which are movably sleeved on a plurality of guide rods (6), and two ends of the springs (7) are respectively fixedly connected to the fixing block (5) and the connecting plate (2); A damping rubber pad (8) is fixedly arranged in the housing (1); an extrusion plate (9) is fixedly arranged at the upper end of the movable rod (3); the upper part of the extrusion plate (9) is arranged to abut against the damping rubber pad (8); a sealing mechanism (10) connected to the movable rod (3) is arranged in the housing (1); and a vacuum chamber is located in the housing (1) between the extrusion plate (9) and the sealing mechanism (10).

2. A high-sealing shock absorber according to claim 1, characterized in that: The sealing mechanism (10) comprises: A sealing rubber block (10-1), the sealing rubber block (10-1) being fixedly sleeved on the movable rod (3), and the sealing rubber block (10-1) being movably arranged in contact with the inner wall of the housing (1), and deformation grooves (10-2) being provided on both upper and lower sides of the sealing rubber block (10-1); A mounting frame (10-3) is clamped in the extension edge (4), and the mounting frame (10-3) is fixedly arranged in the sealing rubber block (10-1), and a deformation reserved cavity (10-4) is provided between the sealing rubber block (10-1) and the extension edge (4).

3. A high-sealing shock absorber according to claim 2, characterized in that: The lower portion of the sealing rubber block (10-1) passes through the housing (1) and is exposed to expose the extended edge (4).

4. A high-sealing shock absorber according to claim 1, characterized in that: A limit plate (11) is fixedly disposed on the upper end of the guide rod (6).

5. A high-sealing shock absorber according to claim 4, characterized in that: A rubber ring (12) is fixedly arranged at the lower part of the limit plate (11), and the rubber ring (12) is fixedly sleeved on the guide rod (6), and the lower part of the rubber ring (12) is arranged to abut against the fixed block (5).

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