KR20090058889A

KR20090058889A - Ball joint

Info

Publication number: KR20090058889A
Application number: KR1020070125686A
Authority: KR
Inventors: 유기대
Original assignee: 현대모비스 주식회사
Priority date: 2007-12-05
Filing date: 2007-12-05
Publication date: 2009-06-10

Abstract

An invention is disclosed for a ball joint. The disclosed invention includes: a ball stud in which a through hole is formed; A castle nut coupled to the ball stud; And a split pin coupled to the ball stud and the castle nut, the one side of which is inserted into the through hole and branched into a plurality of parts to protrude out of the through hole.

According to the present invention, there is no need to manually bend both ends of the split pin after inserting it into the ball stud, and simply insert the split pin into the ball stud so that the split pin is firmly fastened to the ball stud and the castle nut. This has the effect of facilitating.

Description

Ball joint {BALL JOINT}

The present invention relates to a ball joint, and more particularly to a ball joint having a split pin.

In general, the ball joint wraps around a circular protrusion called a ball stud and joins with a freely moving housing socket to form a spring to prevent loose movement. It is used to connect the knuckle and the tie rod and the knuckle.

1 is a cross-sectional view showing a fastening state of a conventional ball joint, Figure 2 is a perspective view showing a fastening state of the main portion shown in FIG.

According to the conventional ball joint, as shown in FIG. 1, the circular protrusion 2 of the ball stud 1 is enclosed by the housing 3 so as to be freely movable, and the protrusion of the ball stud 1. The upper resin bearing 4a and the lower resin bearing 4b divided into two parts are interposed between the site | part 2 and the housing 3, and the structure which makes the ball stud 1 move smoothly is taken.

In addition, a dust cover 5 is covered on the upper part of the housing 3, and a base 6 for preventing separation of the bearing and the ball stud is coupled to the lower part.

In addition, the knuckle 7 is inserted into the upper part of the ball stud 1, and the castle 8 is fastened to the upper part of the ball stud 1 so that the knuckle 7 is not separated from the ball stud 1. . And, as shown in Figure 2, after inserting the split pin (9) into the through hole of the ball stud (1), open both ends of the dotted line with a tool such as a pliers so as not to be separated. Then, the split pin 9 is located in the groove 8a of the castle 8 to prevent rotation.

However, according to the conventional ball joint as described above, after inserting the split pins into the ball studs, both ends of the split pins must be bent manually by hand, so that the assembling work is cumbersome, and in particular, the assembling work is a multi-link type having a complicated link structure. As in, when the tool or the operator's hands must be made in a narrow space difficult to enter, there is a problem that the assembly productivity is significantly reduced. Therefore, there is a need for improvement.

The present invention was devised to improve the above problems of the prior art, and an object thereof is to provide a ball joint having an improved structure to improve assembly productivity.

According to the present invention, a ball joint includes: a ball stud having a through hole formed therein; A castle nut coupled to the ball stud; And a split pin coupled to the ball stud and the castle nut and branched into a plurality of portions while one side is inserted into the through hole, and protrudes out of the through hole.

Here, the through hole portion preferably includes a plurality of through holes extending radially from the inside of the ball stud.

In addition, the split pin, it is preferable that one side is divided into two parts.

In addition, the split pin, it is preferable that the locking step is formed on one side.

In addition, the split pin, it is preferable that the inclined surface is formed on one side.

In addition, the split pin is preferably formed of a metallic material having elasticity.

According to the ball joint of the present invention, after inserting the split pins into the ball studs, there is no need to bend both ends manually, and simply insert the split pins into the ball studs so that the split pins are firmly fastened to the ball studs and the castle nut, There is an effect that the assembling work becomes easy.

In addition, since the split pin fastening operation can be easily performed even in a narrow space where a tool or an operator's hand is hard to enter, there is an effect of improving assembly productivity.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a ball joint according to the present invention. For convenience of description, the thicknesses of the lines and the size of the elements shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

Figure 3 is an exploded perspective view showing a ball joint according to an embodiment of the present invention, Figure 4 is a cross-sectional view taken along the line A-A of Figure 3, Figure 5 is a view showing the split pin shown in FIG.

3 to 5, the ball joint 400 according to an embodiment of the present invention includes a ball stud 100, a castle nut 200, and a split pin 300.

The ball stud 100 has a knuckle 7 (see FIG. 1) fitted to one side thereof, and the other side formed in a spherical shape is housed so as to be able to move freely by the housing 3 (see FIG. 1). On one side of the ball stud 100, the through-hole portion 110 is formed.

The through hole part 110 includes a plurality of through holes 112, 114, and 116 extending radially from the inside of the ball stud 100. In the present embodiment, the through-hole unit 110 will be described as an example including three through holes, that is, the first through hole 112, the second through hole 114 and the third through hole 116. However, the present invention is not limited thereto, and the through hole part 110 may include four or more through holes.

According to the through-hole part 110 as described above, the first through the third through-hole 112, 114, 116 is formed to extend from the inner center of the ball stud 100 to the outside of the ball stud 100 so that the whole is radial. . The first to third through holes 112, 114, and 116 communicate with each other at an inner center of the ball stud 100.

One side of the ball stud 100 in which the through-hole part 110 is formed, the castle nut 200 is provided. The castle nut 200 is coupled to one side of the ball stud 100 so that the knuckle 7 fitted to one side of the ball stud 100 does not escape from the ball stud 100. Since the castle nut 200 is similar in structure and function to a general castle, a detailed description thereof will be omitted.

The split pin 300 is coupled to the ball stud 100 and the castle nut 200 while the castle nut 200 is coupled to the outside of the ball stud 100. One side of the split pin 300 is inserted into the through hole 110 of the ball stud 100 through the groove 210 of the castle nut 200, and the other side of the split pin 300 is engaged with the castle nut 200. . In addition, the split pin 300 is provided so that one side thereof is branched into a plurality of parts while being inserted into the through hole part 110.

To this end, the split pin 300 is formed such that one side thereof is separated into a plurality of parts, and the other side thereof is integrally connected. In this embodiment, one side of the split pin 300 is described as an example formed to be separated into two parts, the first and second pin portions 310 and 320. However, the present invention is not limited thereto, and the split pin 300 may be separated into three or more parts according to the shape of the through hole part 110.

According to the split pin 300 as described above, the first and second pin portions 310 and 320 are branched into two branches while being inserted into the through hole portion 110 in a state in which the first and second pin portions 310 and 320 are in close contact with each other. do. Detailed description thereof will be described later.

Incidentally, inclined surfaces 312 and 322 are formed at end portions of the first and second pin portions 310 and 320, respectively, and locking jaws 314 and 324 are formed at portions adjacent to the inclined surfaces 312 and 322, respectively.

The split pin 300 is formed of a metallic material having elasticity such that the first and second pin portions 310 and 320 are bent and branched about the other side connected to each other, and preferably, may be formed of spring steel.

Figure 6 is a cross-sectional view showing a fastening state of the ball joint according to an embodiment of the present invention.

Hereinafter, the fastening structure of the ball joint according to an embodiment of the present invention will be described in detail.

According to the ball joint 400 of the present embodiment, as shown in FIG. 5, in the state where the castle nut 200 is coupled to the outside of the ball stud 100, the split pin 300 is a groove portion of the castle nut 200. Passed through the 210 is inserted into the through-hole portion 110 of the ball stud 100.

At this time, assuming that the split pin 300 is inserted into the first through hole 112 of the through hole part 110, one side of the split pin 300 has a second point at the point where the first to third through holes 112, 114 and 116 meet. And branches along a path formed by the third through holes 114 and 116. That is, the first pin part 310 is inserted into the second through hole 114 and the second pin part 320 is inserted into the third through hole 116, and the first pin part 310 and the second are in close contact with each other. The pin 320 is divided to both sides.

In this case, since the inclined surfaces 312 and 322 are formed at the end portions of the first and second pin portions 310 and 320, the first and second pin portions 310 and 320 are easily inserted into the second and third through holes 114 and 116, respectively. It can be split.

The first and second pin portions 310 and 320 respectively inserted into the second and third through holes 114 and 116 are exposed to the outside through the ball stud 100 through the second and third through holes 114 and 116, respectively. At this time, each of the first and second pin portions 310 and 320 is caught and fixed to the castle nut 200 by the locking jaws 314 and 324 formed on the first and second pin portions 310 and 320, respectively. Accordingly, the split pin 300 is fixed so as not to be separated from the ball stud 100 and the castle nut 200.

According to the ball joint 400 of the present embodiment as described above, after inserting the split pin 300 into the ball stud 100, it is not necessary to bend both ends manually by hand, the split pin 300 ball stud ( If only the insertion pin 100 is securely fastened to the ball stud 100 and the castle nut 200, the split pin 300, the assembly operation is easy.

In addition, since the fastening operation of the split pin 300 can be easily performed even in a narrow space where a tool or an operator's hand is hard to enter, there is an effect of improving assembly productivity.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a cross-sectional view showing a fastening state of a conventional ball joint.

FIG. 2 is a perspective view illustrating a fastening state of main parts shown in FIG. 1. FIG.

3 is an exploded perspective view showing a ball joint according to an embodiment of the present invention.

4 is a cross-sectional view taken along line AA of FIG. 3.

5 is a diagram illustrating the split pin shown in FIG. 3.

Explanation of symbols on the main parts of the drawings

100: ball stud 110: through hole

200: Castle nut 300: Split pin

310: first pin part 312,322: inclined surface

314,324: locking jaw 320: second pin part

400: Ball Joint

Claims

A ball stud having a through hole formed therein;

A castle nut coupled to the ball stud; And

And a split pin coupled to the ball stud and the castle nut and having one side inserted into the through hole and branched into a plurality of portions to protrude out of the through hole.

The method of claim 1,

The through hole portion, the ball joint, characterized in that it comprises a plurality of through holes extending radially from the inside of the ball stud.

The method of claim 1,

The split pin, the ball joint, characterized in that the one side is divided into two parts.

The method of claim 1,

The split pin is a ball joint, characterized in that the locking step is formed on one side.

The method of claim 1,

The split pin is a ball joint, characterized in that the inclined surface is formed on one side.

The method of claim 1,

The split pin is a ball joint, characterized in that formed of a metallic material having elasticity.