KR20020088526A - Structure for combining cylinder of shock absorber for vehicles and method for the same - Google Patents

Abstract

PURPOSE: Assembling structure for a cylinder of a shock absorber and a knuckle and a method thereof are provided to improve endurance, and to reduce vibration by inserting the end of the cylinder of the shock absorber into a groove of the knuckle with brazing welding. CONSTITUTION: A groove(31) is processed in a knuckle(30) to insert a cylinder(40) of a shock absorber, and the outside of the cylinder is wound by a brazing tape. The cylinder of the shock absorber is inserted to the groove of the knuckle, and the groove is heated. The cylinder of the shock absorber is combined with the knuckle by brazing welding. The endurance is improved by assembling the cylinder of the shock absorber with the knuckle through brazing welding, and concentration of stress is restricted by preventing thermal deformation.

Description

Combination structure of shock absorber cylinder and knuckle and its method {STRUCTURE FOR COMBINING CYLINDER OF SHOCK ABSORBER FOR VEHICLES AND METHOD FOR THE SAME}

The present invention relates to a coupling structure of a shock absorber (cylinder) and a knuckle (knuckle), and a method thereof, and more particularly to a cylinder and knuckle of an improved shock absorber to improve the durability, reduced weight It relates to a coupling structure and method thereof.

In a vehicle, problems with sudden breakage and durability of the chassis parts of the vehicle can cause not only a simple accident but also a large accident that can threaten the driver's life.

On the other hand, as shown in Figure 1, in order to connect the knuckle (knuckle) and the shock absorber that acts as a damping vibration in the vehicle, a separate coupling structure knuckle bracket assembly 10 is required. This knuckle bracket assembly 10 consists of a knuckle bracket 11 and a reinforcement 12, which are joined by spot welding w.

In addition, the knuckle bracket 11 and the cylinder 20 of the shock absorber are inserted by using a press pit method, and then joined by arc welding. Then, the two bolts and nuts are fastened to each other.

The shock absorber and the knuckle of the vehicle connect the vehicle body and the suspension, and transmit and damp the up and down load from the road surface. If a problem occurs in the coupling of the parts, not only driving is impossible, but also fatal accidents may occur.

For example, if a crack due to fatigue occurs in the cylinder 20 of the shock absorber of the vehicle, oil leakage and cylinder breakage may occur later.

The cause of this problem is notch is formed due to the heat deformation generated during the press fit operation, which is the process of coupling the cylinder 20 and the knuckle bracket 11 of the shock absorber, resulting in local stress concentration. Fatigue cracking occurs in the cylinder 20 of the shock absorber, and eventually breaks. Therefore, there is a problem that can act as a cause of the vehicle accident as described above.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a coupling structure and a method of a cylinder and a knuckle of a shock absorber having improved durability so that durability problems due to stress concentration do not occur.

1 is a view schematically showing a coupling structure of a cylinder and a knuckle of a general shock absorber.

2 is a view schematically showing a coupling structure of a cylinder and a knuckle of a shock absorber according to the present invention;

Figure 3 is a schematic diagram showing a partial configuration of the coupling method of the cylinder and knuckle of the shock absorber according to the present invention.

<Description of the symbols for the main parts of the drawings>

30. Knuckles

31.Home

40. Cylinder of shock absorber

51. Brazing Tape

The coupling structure of the cylinder and knuckle of the shock absorber of the present invention for achieving the above object, the shock absorber and the knuckle is provided to combine the shock absorber and knuckle to transfer the up and down load from the road surface of the vehicle In the coupling structure of the absorber cylinder and the knuckle, an end of the cylinder of the shock absorber is inserted into a groove formed in the knuckle and brazed.

In the coupling method of the cylinder and knuckle of the shock absorber of the present invention for achieving the above object, the shock absorber and the knuckle coupled to the shock absorber and the knuckle to transfer the up and down load from the road surface of the vehicle. A method of coupling a cylinder and a knuckle, the method comprising: (a) machining a groove in the knuckle; (b) winding a brazing tape on a cylinder outer circumferential surface of the shock absorber; (c) inserting and installing the cylinder of the shock absorber into the groove of the knuckle; (d) applying heat to the grooves of the knuckle and joining them.

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

2 schematically shows a coupling structure of a cylinder and a knuckle of a shock absorber according to the present invention.

Referring to the drawings, the coupling structure of the cylinder and the knuckle of the shock absorber according to the present invention is that the shock absorber and the knuckle 30 is coupled to transmit the up and down load from the road surface of the vehicle, the damping role of the vibration in the vehicle, In particular, the end of the cylinder 40 of the shock absorber is inserted into the groove 31 formed in the knuckle 30 is made by brazing welding (W).

Coupling method according to the present invention for the coupling structure of the cylinder and the knuckle of the shock absorber according to the present invention having such a configuration, first, so that the shock absorber cylinder 40 can be inserted into the knuckle 30 Proper groove 31 is machined (step 100).

Subsequently, a brazing tape 51 is wound around the outer circumferential surface of the cylinder 40 of the shock absorber, particularly as shown in FIG. 3, in the portion inserted into the groove 31 of the knuckle 30. 110)

Then, the cylinder 40 of the shock absorber at the portion where the brazing tape 51 is wound is inserted into the groove 31 of the knuckle 30. (Step 120)

In addition, heat is applied to the groove 31 to couple the cylinder 40 and the knuckle 30 of the shock absorber. (Step 130) Then, they are finally joined by brazing welding (W) as shown in FIG. do.

As described above, the groove 31 is formed in the knuckle 30, the brazing tape 51 is wound around the cylinder 40 of the shock absorber, inserted into the cylinder, and the brazing welding W is performed by applying heat thereto. .

As such, the cylinder 40 and the knuckle 30 of the shock absorber are coupled to each other by brazing welding (W), thereby increasing durability.

As described above, the coupling structure of the shock absorber cylinder and the knuckle and the method thereof have the following effects.

As the conventional thermal deformation does not occur during the press-fit operation does not occur stress concentration phenomenon occurs. Therefore, the durability problem can be solved accordingly.

And by combining by brazing welding as described above, the mechanical elements or parts are not required as in the prior art, so the number of parts is significantly reduced, the weight is reduced, and the labor of labor is reduced.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (2)

In the coupling structure of the shock absorber cylinder and knuckle provided with a combination of the shock absorber and the knuckle to transmit the vibration damping role and the up and down load from the road surface of the vehicle, And an end portion of the cylinder of the shock absorber is inserted into a groove formed in the knuckle and brazed and welded. In the coupling method of the shock absorber cylinder and knuckle to the shock absorber and the knuckle to transmit the damping role of the vibration in the vehicle and the up and down load from the road surface of the vehicle, (a) machining a groove in the knuckle; (b) winding a brazing tape on a cylinder outer circumferential surface of the shock absorber; (c) inserting and installing the cylinder of the shock absorber into the groove of the knuckle; (d) applying heat to the grooves of the knuckle and joining them;