Air bag shock absorber capable of reducing abnormal sound

Abstract

The utility model discloses an air bag shock absorber capable of reducing abnormal sound, which belongs to the technical field of shock absorbers, and comprises a shock absorber main body, a connecting rod and an air bag assembly, the connecting rod is arranged on the shock absorber main body, a magnetic suction gasket and an oil seal are arranged at the connecting position of the upper end part of the shock absorber main body and the connecting rod, and the air bag assembly is arranged on the connecting rod. The magnetic suction gasket comprises a magnetic block arranged on the lower portion and fixed to the shock absorber body and a nylon buffer block arranged on the upper portion. The connecting structure of the magnet gasket and the shock absorber body is rigid, so that the magnet gasket cannot move along with stretching and compression of a connecting rod, the nylon buffer block on the upper portion also ensures that the gasket has certain buffer energy absorption capacity, the normal use effect of the gasket cannot be affected, the shock absorber of the scheme greatly reduces movement of an original nylon gasket, and the service life of the shock absorber is prolonged. Therefore, abnormal sound caused by the problem of the gasket in the shock absorber is greatly reduced, and the shock absorber is low in use noise and better in experience feeling.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of shock absorber, specifically relates to a gas bag shock absorber of reducing abnormal sound. BACKGROUND

[0002] The gas bag shock absorber is a kind of shock-absorbing device using compressed gas (usually air or nitrogen) as elastic medium, and the absorption and isolation of vibration and impact are realized by adjusting gas pressure;The gas bag shock absorber has the advantages of strong load adaptability, adjustable stiffness, corrosion resistance, etc., and is widely used in the fields of automobile, rail transit, industrial equipment and precision instrument;The conventional gas bag shock absorber is provided with a gasket between connecting rod and shock absorber main body, and the existing gas bag shock absorber gasket selects nylon material for the design of corrosion resistance, although the lower end of the gasket is fixed, but the gasket will move back and forth with the up-down stretching of connecting rod (even a certain degree of torsion occurs), which makes the gas bag shock absorber produce a certain degree of abnormal sound due to the movement of gasket inside during use, and affects the use experience of gas bag shock absorber.

[0003] Therefore, we design a gas bag shock absorber of reducing abnormal sound to provide another technical solution for the above technical problems. CONTENT OF UTILITY MODEL

[0004] The utility model aims at providing a gas bag shock absorber of reducing abnormal sound to solve the problems of existing coupling during use in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: including shock absorber main body, connecting rod and gas bag assembly, the connecting rod is arranged on the shock absorber main body, and the upper end of the shock absorber main body is provided with magnetic gasket and oil seal at the connecting position of connecting rod, the magnetic gasket includes the magnetic block arranged in lower part and fixed with the shock absorber main body and the nylon buffer block arranged in upper part.

[0006] Preferably, the connecting rod is arranged on the shock absorber main body and the lower part of the connecting rod is inserted into the internal cavity of the shock absorber main body, and the gas bag assembly is connected on the outside of the shock absorber main body and the connecting rod, wherein the upper part of the gas bag assembly is connected on the upper part of the connecting rod, and the lower part of the gas bag assembly is connected on the outside of the shock absorber main body.

[0007] Preferably, the lower end section of the magnetic block is trapezoidal, the lower end section of the magnetic block is trapezoidal, the lower end inside of the magnetic block is formed with the taper shape accommodating space, and the oil seal is arranged directly below the accommodating space.

[0008] Preferably, the upper end of the magnetic block is provided with a plurality of protrusions, and the nylon buffer block is connected with the protrusions.

[0009] Preferably, the upper part of the connecting rod is threadedly connected with an upper lifting lug, and the bottom of the damper body is welded with a lower lifting lug.

[0010] Preferably, the upper shell of the air bag assembly is provided with a rubber shock absorbing block on the lower side, which is sleeved on the outer side of the connecting rod.

[0011] Compared with the prior art, the air bag damper has the advantages that:

[0012] The connecting structure of the magnet pad and the damper body is rigid, and thus will not move along with the stretching and compression of the connecting rod, and the upper nylon buffer block also ensures that the pad has a certain buffering and energy absorbing capacity, and will not affect the normal use effect of the pad. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a schematic diagram of the main structure of the utility model;

[0014] Fig. 2 It is a top view structural schematic diagram of the magnetic attraction pad block of the utility model;

[0015] Fig. 3 It is a sectional view structural schematic diagram of the magnetic attraction pad block of the utility model.

[0016] In the drawing: 1, upper lifting lug; 2, air bag assembly; 3, rubber shock absorbing block; 4, connecting rod; 5, magnetic attraction pad; 6, oil seal; 7, damper body; 8, lower lifting lug; 9, nylon buffer block; 10, nylon buffer block. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] Referring to Figs. 1-3 An air bag damper reducing abnormal sound, comprising a damper body 7, a connecting rod 4 and an air bag assembly 2, the connecting rod 4 is arranged on the damper body 7, the upper end of the damper body 7 is provided with a magnetic attraction pad 5 and an oil seal 6 at the connecting position with the connecting rod 4, the magnetic attraction pad 5 comprises a magnetic block 10 arranged at the lower part and fixed with the damper body 7 and a nylon buffer block 9 arranged at the upper part.

[0019] The existing air bag shock absorber in the use process, the nylon gasket will stretch and compress with the connecting rod 4 and produce abnormal sound, the scheme sets a kind of magnetic pad block combined by nylon buffer block 9 and magnetic block 10, the strong magnetic adsorption of magnetic block 10 is fixed on the upper part of the shock absorber body, the nylon buffer block 9 is engaged with each other on the magnetic block 10, the connection structure of the magnet gasket and the shock absorber body 7 is rigid, so it will not move with the stretching and compression of the connecting rod 4, the upper nylon buffer block 9 also ensures that the gasket has a certain buffering and energy absorbing capacity, which will not affect the normal use effect of the gasket; It needs to be considered that the magnetic field of the magnetic block 10 will form resistance to the stretching and compression of the moving connecting rod 4, but the overall thickness of the magnet of the scheme is small, the resistance formed by the magnetic field is very small, and it will not affect the stretching and compression of the connecting rod 4, and in order to further reduce the resistance, the connecting rod 4 can be made of a material with poor magnetic permeability.

[0020] Further, the connecting rod 4 is arranged on the shock absorber body 7, and the lower part of the connecting rod 4 extends into the internal cavity of the shock absorber body 7, and the air bag assembly 2 is sleeved on the outer side of the shock absorber body 7 and the connecting rod 4, wherein the upper part of the air bag assembly 2 is sleeved on the upper part of the connecting rod 4, and the lower part of the air bag assembly 2 is sleeved on the outer side of the shock absorber body 7.

[0021] Further, the lower end of the magnetic block 10 is in the shape of a trapezoid, and a conical frustum-shaped accommodating space is formed on the inner side of the lower end of the magnetic block 10, and the oil seal 6 is arranged directly below the accommodating space.

[0022] Through the technical scheme, the lower end structure of the magnetic block 10 forms a conical frustum-shaped accommodating space, so that the mutual contact between the magnetic block 10 and the oil seal 6 can be avoided, and the stability of the use of the oil seal 6 is ensured.

[0023] Further, a plurality of protrusions are arranged on the upper end of the magnetic block 10, and the nylon buffer block 9 is clamped with the protrusions.

[0024] A plurality of annular array arranged protrusions are arranged on the upper end of the magnetic block 10, and a plurality of notches corresponding to the protrusions are arranged on the nylon buffer block 9, the protrusions of the magnetic block 10 can be matched to clamp and fix the nylon buffer block 9, so that the nylon buffer block 9 is stable, and the protrusions also limit the nylon buffer block 9 to a certain extent, which can reduce the movement of the nylon buffer block 9, and further reduce the abnormal sound generated by the gasket

[0025] Further, the upper part of the connecting rod 4 is connected with the upper lifting lug 1 through threads, and the bottom of the shock absorber body 7 is welded with the lower lifting lug 8.

[0026] Further, the upper side of the air bag assembly 2 is provided with a rubber shock absorbing block 3, and the rubber shock absorbing block 3 is sleeved on the outer side of the connecting rod 4.

[0027] Through the technical scheme, the rubber shock-absorbing block 3 is used for buffering and energy absorption of the air bag shock absorber, and also plays a protection role, avoiding compression of the air bag shock absorber exceeding a maximum threshold.

[0028] Working principle: the upper end of the shock absorber body 7 is provided with a magnetic pad 5 and an oil seal 6 at the connecting position of the connecting rod 4, the magnetic pad includes a nylon buffer block 9 and a magnetic block 10, the magnetic block 10 is fixed on the upper part of the shock absorber body by virtue of the strong magnetic adsorption of the magnetic block 10, the nylon buffer block 9 is clamped and intermeshed on the magnetic block 10, the connection structure of the magnetic pad and the shock absorber body 7 is rigid, so the magnetic pad will not move with the stretching and compression of the connecting rod 4, and the upper nylon buffer block 9 also ensures that the pad has a certain buffering and energy absorption capacity, and will not affect the normal use effect of the pad; the shock absorber of the scheme greatly reduces the movement of the original nylon pad, thereby greatly reducing the abnormal sound caused by the pad problem in the shock absorber, and the shock absorber of the scheme has low noise and better experience.

[0029] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0030] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, different embodiments or examples described in the present application and the features of different embodiments or examples can be combined by those skilled in the art without contradiction.

[0031] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An airbag vibration damper for reducing abnormal noise, characterized in that: The device includes a shock absorber body (7), a connecting rod (4), and an airbag assembly (2). The connecting rod (4) is mounted on the shock absorber body (7). A magnetic pad (5) and an oil seal (6) are provided at the connection point between the upper end of the shock absorber body (7) and the connecting rod (4). The magnetic pad (5) includes a magnetic block (10) fixed to the shock absorber body (7) at the lower part and a nylon buffer block (9) at the upper part.

2. The airbag vibration damper for reducing abnormal noise according to claim 1, characterized in that: The connecting rod (4) is mounted on the shock absorber body (7) and the lower part of the connecting rod (4) extends into the internal cavity of the shock absorber body (7). The airbag assembly (2) is sleeved on the outside of the shock absorber body (7) and the connecting rod (4), wherein the upper part of the airbag assembly (2) is sleeved on the upper part of the connecting rod (4) and the lower part of the airbag assembly (2) is sleeved on the outside of the shock absorber body (7).

3. The airbag vibration damper for reducing abnormal noise according to claim 1, characterized in that: The lower end of the magnetic block (10) has a trapezoidal cross section, and a frustum-shaped accommodating space is formed on the inner side of the lower end of the magnetic block (10). The oil seal (6) is located directly below the accommodating space.

4. The airbag vibration damper for reducing abnormal noise according to claim 1, characterized in that: The upper end of the magnetic block (10) is provided with multiple sets of protrusions, and the nylon buffer block (9) is engaged with the protrusions.

5. The airbag vibration damper for reducing abnormal noise according to claim 1, characterized in that: The upper part of the connecting rod (4) is connected to the upper lifting lug (1) by a thread, and the bottom of the damper body (7) is welded and fixed with the lower lifting lug (8).

6. The airbag vibration damper for reducing abnormal noise according to claim 1, characterized in that: A rubber shock absorber (3) is provided on the lower side of the upper shell of the airbag assembly (2), and the rubber shock absorber (3) is sleeved on the outside of the connecting rod (4).

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