KR20100102323A - Bracket for mounting shock absorber - Google Patents

Abstract

PURPOSE: A bracket for mounting a shock absorber is provided to enable easy manufacturing and handling through the improvement of conventional metal material, to reduce the material cost and the processing cost and reduce the noise. CONSTITUTION: A bracket(10) for mounting a shock absorber comprise a body(12), an inner wall(16), a wing(14), and a uneven part(18). The body holds bush assembly for fixing a piston rod. The body holds a bumper rubber for reducing the shock with other parts. The inner wall divides the internal space of the body into the upper part and the lower part. The inner wall comprises a hole(16a) passing through the piston rod on its central part to support the bush assembly on its upper part and a bumper rubber on its lower part. The wing is extended outwards from the body and is fixed to a vehicle body. The uneven part is formed on the contact surface of the bracket with the bush assembly or the bumper rubber. The uneven part gradually increases the contact area and reduces the contact noise.

Description

Shock absorber mounting bracket {BRACKET FOR MOUNTING SHOCK ABSORBER}

The present invention relates to a shock absorber mounting bracket used to mount a shock absorber in a vehicle, and more particularly, to connect the piston rod of the shock absorber without vibration to the body side to insulate the vibration between the shock absorber and the vehicle body. And a shock absorber mounting bracket in which a bumper rubber is accommodated to reduce impact.

In general, the vehicle suspension device is provided between the vehicle body and the axle to absorb vibrations and shocks transmitted from the road surface while driving the vehicle, thereby preventing damage to the vehicle body, and improving ride comfort of the vehicle.

Such a vehicle suspension device uses a suspension spring and a shock absorber to adjust the up and down movement of the vehicle body and the wheel to secure a comfortable ride and to maintain the adjustment stability by appropriate stiffness in directions other than up and down.

More specifically, the suspension gas spring absorbs the shock caused by the vibration when the vehicle body vibrates up and down by the curvature of the road surface, and the shock absorber provides a function of stopping the absorption of the shock and the vibration of the suspension spring.

The shock absorber includes a cylinder and a piston rod having one side inserted into the cylinder, and an end of the piston rod is provided with a piston valve for generating damping force by controlling fluid flow in the cylinder.

The upper part of the cylinder is provided with a dust cover surrounding the piston rod and the upper part of the cylinder to prevent foreign matter from penetrating into the cylinder. A bumper stopper fitted to the piston rod is installed inside the dust cover to absorb shock loads transmitted from the wheel to the vehicle body when the shock absorber is completely compressed.

The shock absorber is usually connected between the vehicle body and the wheel by fixing the upper end of the piston rod to the vehicle body side and the lower end of the cylinder to the wheel side. To this end, an upper mounting structure for fixing with the vehicle body is provided at the upper end of the piston rod, and a knuckle bracket is provided at the lower end of the cylinder so as to be connected to the axle.

The upper mounting structure of the shock absorber, as shown in Figure 1, the bracket 110 is made of iron or aluminum material by pressing or aluminum casting, and the bracket 110 in a state in which the upper end of the piston rod is coupled The bush assembly 120 is pressed into the interior of the.

In the center of the body portion 112 of the bracket 110, as described above, a cylindrical recess is formed so that the bush assembly 120 can be press-fitted, and wing portions extending from both sides of the body portion 112 of the bracket 110 ( The bolt fastening holes 114a are formed at 114 so that bolts can be inserted for coupling with the vehicle body.

In addition, a through hole is formed in the center of the cylindrical recess so that the piston rod can pass therethrough, and a mounting part for mounting the dust cover and the bumper stopper is formed at the lower part of the body portion 112 of the bracket 110.

The bush assembly 120 includes a rubber 121 for preventing vibration of the wheel side transmitted through the piston rod from being transmitted to the vehicle body side, a plate embedded in the rubber, and an upper end of the piston rod on the plate. Washer and nut for coupling, and a pipe member attached to the outer peripheral surface of the rubber (121).

The pipe member has a cylindrical shape of a size such that the bush assembly 120 can be forcibly fit into the recess of the bracket 110, thereby preventing the bush assembly 120 from being separated from the recess of the bracket 110. do.

However, the bracket 110 used in the upper mounting structure of the conventional shock absorber made as described above was manufactured by pressing a steel material or die-casting an aluminum alloy material. There were many limitations in the shape and size of the bracket, and the weight of the bracket was too heavy, and the method of die-casting an aluminum alloy material had a problem in that the material cost and the processing cost were high.

On the other hand, recently, with the development of the material industry, a plastic material having high strength has been developed. Accordingly, an attempt to replace the material of the bracket with a high strength plastic material has been made. In addition, when the bracket is molded of plastic material, the noise may increase more when friction with other parts than the metal material, and thus, the development of a technology for suppressing the noise that is increased according to the change of the material is required. have.

In addition, in the past, attempts have been made to reduce the contact area by forming an uneven portion on the surface of the bush assembly or bumper rubber, but there is a factor that increases the production cost of the bush assembly or bumper rubber, and has low durability and reliability. As the size and shape of the product varies, the variety of bush assemblies or bumper rubbers coupled thereto is also difficult to produce and manage the product.

The present invention is to solve the problems of the prior art described above, to improve the material of the bracket that was formed of a metal material can be easily manufactured and handled and at the same time reduce the material cost and processing cost, and the noise of contact with other parts It is to provide a shock absorber mounting bracket to suppress the occurrence.

The shock absorber mounting bracket according to the present invention for achieving the above object is a shock absorber mounting bracket used in the upper mounting structure for coupling the piston rod end of the shock absorber to the vehicle body side, and a bush for fixing the piston rod. A body having an inner space for accommodating a bumper rubber to shock the assembly and other parts, and the inner space of the body is divided into upper and lower portions, and a hole penetrating the piston rod is formed in a central portion of the bush. It is formed on the inner partition wall that the assembly is supported, the bumper rubber is supported at the bottom, the wing portion extending outward from the body portion and fixed to the vehicle body side, and the contact surface between the bracket and the bush assembly or the bumper rubber And surface irregularities that increase the contact area step by step to reduce contact noise.

In addition, the surface irregularities may be formed on upper and lower surfaces of the inner partition wall. In addition, the surface irregularities may be formed by mechanical processing on the upper and lower surfaces of the inner partition, or by chemical processing by etching.

The shock absorber mounting bracket according to the present invention configured as described above has a small area in contact with the bumper rubber for cushioning the shock with the bush assembly or other parts for fixing the piston rod by the surface irregularities formed therein, As a result, noise generated in contact with the bush assembly or the bumper rubber may be reduced. In addition, the present invention can be molded by casting the bracket by a mold. In addition, the present invention can create a shape corresponding to the surface asperities in the mold in advance in order to form the surface asperities in the bracket, thereby forming the bracket in a faster and more accurate formation. In addition, the present invention can be easily removed from the mold during production of the bracket, it is possible to prevent the product from being broken in the process of detachment. In addition, the present invention is a uniform shape in the production of the bracket, uniform dispersion, productivity is improved, in particular, when molding the bracket from a plastic material, the product can be easily and uniformly molded, and the material cost can be reduced The weight of the product can be reduced without degrading the strength of the bracket. In addition, the present invention can quickly discharge the heat generated during the compression of the bush assembly or bumper rubber through the surface irregularities of the bracket, it is possible to improve the cooling effect.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a cross-sectional view of the shock absorber mounting bracket according to the present invention, Figure 3 is a perspective view of the shock absorber mounting bracket according to the present invention, Figure 4 is a partial cutout of the shock absorber mounting bracket according to the present invention. Perspective view.

The shock absorber 50 mounting bracket according to the present invention is used in the upper mounting structure for coupling the shock absorber 50 mounting bracket 10 to the end of the piston rod 54 of the shock absorber 50 to the vehicle body side. .

The shock absorber 50 is usually connected between the vehicle body 60 and the wheel by fixing the lower end of the cylinder 52 to the wheel side and the upper end of the piston rod 54 to the vehicle body 60 side. The upper end of the 54 is provided with an upper mounting structure for fixing with the vehicle body 60, the lower end of the cylinder 52 is provided with an eye 56 or knuckle bracket to be connected to the axle.

The upper mounting structure of the shock absorber 50 includes the shock absorber 50 mounting bracket 10 and the bushing assembly 20, and the piston rod 54 of the shock absorber 50 is provided through the bracket 10. May be connected to the vehicle body 60 side.

Here, the bush assembly 20 is press-fitted into the bracket 10 in a state where the upper end of the piston rod 54 is coupled, and is configured to have elasticity so that vibration transmitted from the piston rod 54 is transferred to the bracket 10. You can block delivery. On the other hand, since the specific configuration of the bush assembly 20 does not limit the present invention, a detailed description thereof will be omitted.

In addition, the bracket 10 has a body portion having an inner space in which the bush assembly 20 and the bumper rubber 58 are accommodated. In addition, a dust cover 59 may be mounted between the bumper rubber 58 and the bracket to prevent foreign matter from penetrating into the cylinder. The bumper rubber 58 may cushion shocks with other parts, and in particular, when the shock absorber 50 is expanded and contracted, the bumper rubber 58 may be in contact with the upper cap 53 of the shock absorber 50 to cushion shocks.

To this end, an inner partition 16 is formed in the trunk portion 12 of the bracket 10 to support the bush assembly 20 and the bumper rubber 58, respectively. The inner partition 16 partitions the inner space of the body portion 12 into upper and lower portions. The bush assembly 20 is press-fitted into the upper space, and the bumper rubber 58 is fitted into the lower space. In addition, the inner partition 16 has a hole 16a through which the piston rod 54 passes.

In the bracket 10, the piston rod 54 passes through the hole 16a of the inner partition 16, and the bush assembly 20 is coupled to the end of the piston rod 54. It is pressed into the upper interior space.

In addition, the bumper rubber 58 is coupled to the lower inner space of the body portion 12. The bumper rubber 58 is fitted to the upper end of the piston rod 54 and fixed to the lower surface of the inner partition 16.

In addition, the bracket 10 is formed by extending the wing portion 14 to the outside from the body portion 12. And the wing | blade part 14 is fixed with the vehicle body 60 side. To this end, the bolt portion 14a is formed at both sides of the wing portion 14. The bolt is inserted into the bolt fastening hole 14a of the wing portion 14 and fastened to the vehicle body 60 side.

On the other hand, the bracket 10 is formed in the contact surface with the bush assembly 20 or the bumper rubber 58 in the inner space is formed with the surface irregularities 18 to increase the contact area step by step. The surface irregularities 18 may reduce contact noise as the contact area with the bush assembly 20 or the bumper rubber 58 increases in stages.

The surface irregularities 18 may be formed on upper and lower surfaces of the inner partition 16. In addition, the surface irregularities 18 may be formed by a plurality of protrusions that are regularly or irregularly arranged on the upper and lower surfaces of the inner partition 16. In addition, the surface concave-convex portion 18 may be formed by hatching (hatching) the surface of the inner partition wall 16 or by mechanical processing such as rough surface treatment, and may be formed by chemical processing such as etching.

Preferably, the bracket 10 may be manufactured integrally molded by a mold. To this end, the mold may increase the surface roughness by mechanically or chemically machining the mold contact surface corresponding to the surface irregularities 18 of the inner partition 16. For example, the mold contact surface corresponding to the surface irregularities 18 of the inner partition 16 may form a plurality of protrusions arranged regularly or irregularly, and may be mechanically processed, such as hatching or rough surface treatment. can do. In addition, the mold may be rusted by partially oxidizing the mold contact surface for forming the inner partition wall 16, and thus the surface irregularities 18 may be formed on the inner partition wall 16 of the bracket 10 formed to correspond to the mold contact surface. ) Can be formed. In addition, the mold can also form a predetermined shape (mark) on the mold contact surface. In addition, the mold may chemically process the mold contact surface by etching, and thus, the bracket 10 formed by the mold may have the surface irregularities 18 formed on the inner partition 16.

In addition, the bracket 10 has a stepped portion 13 which is formed stepwise around the lower portion of the inner space of the body portion 12 into which the bumper rubber 58 is fitted. Therefore, when the bumper rubber 58 is compressed in the process of absorbing the shock, the bracket 10 is moved from the upper side to the lower side in contact with the side of the bumper rubber 58, and the contact area gradually increases, thereby making noise. This does not occur greatly.

Here, the bracket 10 may be made of metal, for example cast iron or aluminum, and may be formed by casting or press working.

Preferably, the bracket 10 of the present invention may be formed integrally with a plastic material. As such, when the bracket 10 is made of a plastic material, the weight can be reduced compared to the metal material. More preferably, the bracket 10 may be made of an engineering plastic having high strength, thereby satisfying all of the strength characteristics along with the weight reduction of the product.

In addition, as the bracket 10 is made of a plastic material, the strength of the wing portion 14 may be reduced, and thus, the reinforcing washer 15 for supporting the bolt in the bolt fastening hole 14a of the wing portion 14. ) Can be molded into one piece.

The reinforcing washer 15 is made of a metal material and is molded in a state of being pressed into the bolt fastening hole 14a of the wing portion 14. In addition, the reinforcing washer 15 inserts the bolt into the bolt fastening hole 14a to contact the bottom surface of the head of the bolt when the bolt is fastened to the vehicle body 60 and supports the bolt.

In addition, the reinforcing washer 15 may be formed to cover the bolt fastening hole 14a, and may extend through the bolt fastening hole 14a so that both ends thereof are flush with the upper and lower surfaces of the wing portion 14. Can be. When the bracket 10 of the present invention is fastened with the upper part by bolts, the reinforcement washer 15 directly transmits the input of the bolts to the upper part, and thus the fastening force of the bolts is directly transmitted to the wing 14. Since the durability of the bracket 10 is further increased.

Although the shock absorber mounting bracket according to the present invention has been described with reference to the illustrated drawings, the present invention is not limited to the embodiments and drawings described above, and the present invention belongs to the claims. Of course, it can be variously modified and modified by those skilled in the art.

1 is a perspective view of a shock absorber mounting bracket according to the prior art.

Figure 2 is a cross-sectional view of the shock absorber mounting bracket is installed in accordance with the present invention.

Figure 3 is a perspective view of the shock absorber mounting bracket according to the invention.

Figure 4 is a partially cutaway perspective view of the shock absorber mounting bracket according to the present invention.

Claims (3)

A shock absorber mounting bracket used for an upper mounting structure for coupling the piston rod end of the shock absorber to the vehicle body side. A body part having an inner space for accommodating a bumper rubber to cushion the bush assembly and other parts for fixing the piston rod, An inner partition partitioning the inner space of the body into an upper portion and a lower portion and having a hole penetrating the piston rod at a central portion thereof to support the bush assembly at an upper portion thereof and a bumper rubber at a lower portion thereof; A wing portion extending outward from the body portion and fixed to the vehicle body side; And a surface concave-convex portion formed on the contact surface between the bracket and the bush assembly or the bumper rubber to increase the contact area step by step to reduce the contact noise. The method according to claim 1, The surface irregularities are shock absorber mounting brackets, characterized in that formed on the upper surface, the lower surface of the inner partition or the inner surface of the body portion. The method according to claim 2, The surface irregularities are formed by mechanical processing, or a shock absorber mounting bracket, characterized in that formed by chemical processing by etching.

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