KR20020051741A - A structure of universal joint for steering device in a car - Google Patents

Abstract

PURPOSE: A universal joint connection structure of a steering system is provided to prevent accidents by making the basic steering force between a coupling and a stopper bracket maintained even when rubber is stiffen and damaged. CONSTITUTION: A universal joint(122) is connected between an upper shaft(108) and a lower shaft(110) by a stopper bracket(120) and a coupling(124). A universal joint connection structure of a steering system is composed of a hollow pipe, a safety bolt(5), and a safety bracket(3). The hollow pipe is supported to the coupling by rubber and protruded to both sides of the coupling. The safety bolt penetrates the stopper bracket and the hollow pipe so that the stopper bracket can be stuck fast to an end of the hollow pipe. The safety bracket is fixed to the safety bolt to be stuck fast to the other end of the hollow pipe. The stopper bracket and safety bracket is coupled to both sides of the hollow pipe by the safety bolt and the hollow pipe cannot be dislocated. Therefore, steering force is transmitted continuously.

Description

Structure of universal joint for steering device {A structure of universal joint for steering device in a car}

The present invention relates to a universal joint of a vehicle steering apparatus, and more particularly, to a connection structure of a universal joint.

Looking at the configuration of a conventional general steering device, as shown in Figure 1, the steering wheel 100 is to be rotated by the driver to operate left and right, the airbag and the horn (horn) is mounted on the upper center and the airbag cover or horn cover 102 The steering wheel 100 is supported on the vehicle body through the steering column 106 together with the multifunction switch 104 and transmits its operating force to a steering gear box (not shown). The steering column 106 has an upper shaft 108 and a lower shaft 110 connected to a universal joint therein, and an upper tube 112 and a lower tube (111) through an upper bearing 109 and a lower bearing 111 on the outside thereof. 114 is wrapped in the upper mounting bracket 116 and the lower mounting bracket 117 is fixed to the vehicle body, the upper shaft 108 is the multi-function switch 104 and the steering wheel 100 is mounted The Lower shaft 110 is connected with the joint assembly 118 to transfer an operating force of the steering wheel 100 to the steering gear box.

Looking at the connection state of the upper shaft 108 and the lower shaft 110, the universal joint connecting portion in more detail with reference to Figures 2 to 4, the upper shaft 108 on the left side of the stopper bracket 120 ) Is connected, the lower shaft 110 of the right side is connected to the universal joint 122, the left side of the universal joint 122 is connected to the stopper bracket 120 again through the coupling 124, the driver The steering wheel 100 of the operating force is to be transmitted to the steering gear box.

Here, the stopper bracket 120 and the coupling 124 is connected through the rivet 126, the connection of the rivet 126 and the coupling 124 is a hollow pipe (rivet 126) is inserted ( 128 and a rubber 130 around the yoke 132 of the coupling 124 and the universal joint 122 are coupled by two fastening bolts 134. The bolt 134 is inserted into the hollow pipe 136 inserted into the coupling 124 and the hollow pipe 136 is protruded toward the stopper bracket 120 in the fastened state and is formed in the stopper bracket 120. A constant distance is formed at 138 to allow relative rotation of the stopper bracket 120 and the coupling 124 only within a certain angle.

That is, the stopper bracket 120 and the coupling 124 has a structure in which the relative rotation is possible to some extent by the rubber 130 installed around the hollow pipe 128 into which the rivet 126 is inserted. The rubber 130 to absorb the vibration in the rotational direction, and also to absorb the vibration in the axial direction by the rubber 130, the head of the rivet 126 is the coupling 124 The axial vibration from the lower shaft 110 is transmitted to the stopper bracket 120 through the rubber 130 because the hollow pipe 128 is not in direct contact with the hollow pipe 128.

However, in the structure as described above, when the rubber 130 is subjected to frequent loads and hardening damage occurs, the rivet 126 and the hollow pipe 128 are very large to escape from the coupling 124. In this case, the coupling 124 and the stopper bracket 120 may be in a state in which rotation steering force cannot be transmitted, and if such a phenomenon occurs during operation, it causes an accident.

Accordingly, the present invention has been made to solve the above problems, so that even when the rubber connecting the coupling and the hollow pipe is hardened and broken, the basic steering force transmission between the coupling and the stopper bracket can be made continuously, The purpose is to provide a universal joint connection structure of the steering system to prevent safety accidents.

1 is an exploded perspective view showing the structure of a steering apparatus according to the prior art,

2 is a structural diagram of a universal joint connection portion of a steering apparatus according to the prior art,

3 is an observation view seen from point A of FIG.

4 is a cross-sectional view taken along line B-B 'of FIG. 3;

5 is a universal joint connection structure of the steering apparatus according to the present invention,

6 is an observation view seen from point C of FIG.

7 is a right sectional view taken along the line D-D 'of FIG.

<Description of Symbols for Main Parts of Drawings>

1, 9, 128, 136: Hollow pipe 3: Safety racket

5: safety bolt 7, 138: home

108: upper shaft 110: lower shaft

120: stopper bracket 122: universal joint

124: coupling 134: tightening bolt

Universal joint connection structure of the present invention to achieve the above object is a steering device in which the universal joint is connected between the upper shaft and the lower shaft by the stopper bracket and the coupling,

A hollow pipe supported by the rubber and protruding to both sides of the coupling, a safety bolt passing through the stopper bracket and the hollow pipe so that the stopper bracket is tightly supported on one end of the hollow pipe, and the other end of the hollow pipe. It is characterized by consisting of a safety racket that is penetrated and fixed to the safety bolt to be in close contact.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the names and symbols of the same parts as those used in the description of the prior art will be described using the same.

3 is a view illustrating a universal joint connection structure of the present invention, wherein the universal joint 122 is connected between the upper shaft 108 and the lower shaft 110 by the stopper bracket 120 and the coupling 124. The coupling 124 is supported by a rubber 130 and provided with a hollow pipe 1 protruding to both sides of the coupling 124, and the hollow pipe 1 protrudes from the yoke 132. The coupling 124 coupled to the fastening bolt 134 and the stopper bracket 120 are not to be in direct contact with each other so that the force can be transmitted through the hollow pipe 1.

In addition, at the other end of the hollow pipe 1, the safety racket 3 is not directly in contact with the coupling 124 like the connection state of the stopper bracket 120 and the coupling 124, but the hollow pipe 1 When the stopper bracket 120 and the safety racket 3 are installed on both sides of the coupling 124 via the hollow pipe 1, the stopper bracket 120 is coupled to the close contact state. And a safety bolt 5 fastened through the hollow pipe 1 and the safety racket 3 of the coupling 124 in order.

Of course, the safety racket 3, like the stopper bracket 120, to maintain a state that does not interfere with the fastening bolt 134 used to couple the universal joint 122 to the coupling 124. Further, when the stopper bracket 120 side and the coupling 124 side have a relative rotational displacement, the fastening bolt 134 of the fastening bolt 134 can be limited within a predetermined angle with the stopper bracket 120. The groove 7 slightly larger than the outer diameter is formed.

The coupling of the universal joint 122 and the coupling 124 is spaced apart from the stopper bracket 120 and the safety racket 3 through a hollow pipe 9 inserted into the coupling 124 in the same manner as in the related art. It is to be connected in such a state, only the more protruded to the right in the drawing (see Fig. 7) is for ensuring the space to install the safety racket (3).

In addition, although the universal joint 122 and the coupling 124 are connected to the lower shaft 110 side and the stopper bracket 120 is connected to the upper shaft 108 side in the drawing, the same configuration is connected to the opposite side to each other. Of course, it can also be configured.

Referring to the operation of the present invention configured as described above are as follows.

The steering force of the driver is transmitted to the stopper bracket 120 through the upper shaft 108, which is transmitted to the coupling 124 through the hollow pipe 1 in close contact with the stopper bracket 120. A rubber 130 is interposed between the coupling member 124 and the coupling 124 to transmit the driver's steering force while absorbing vibrations in the axial direction and the rotational direction thereof.

Here, the rubber 130 interposed between the hollow pipe 1 and the coupling 124 may be hardened and broken by long use. In such a case, the rubber 130 is conventionally broken. Since the hollow pipe supported by the rubber 130 to the coupling 124 is fixed by only the rivet 126, the hollow pipe 136 and the rivet 126 leave the coupling 124. In some cases, the steering force of the driver could not be properly transmitted, but according to the present invention, even when there is a hardening damage of the rubber 130 as described above, the stopper bracket 120 is disposed on both sides of the hollow pipe 1. In addition, since the safety racket 3 is coupled by the safety bolt 5, the hollow pipe 1 cannot escape the coupling 124, and thus the vibration absorption of the rubber 130 If you can't, Joe Only the incense can continue to be transmitted.

Therefore, even if the hardening damage of the rubber 130 occurs while driving, it does not cause a state of inability to steer as in the prior art, it is possible to fundamentally prevent safety accidents.

As described above, according to the present invention, even when the rubber connecting the coupling and the hollow pipe is hardened and broken, the safety racket prevents the hollow pipe from being separated from the coupling so that only the basic steering force transmission between the coupling and the stopper bracket is By making it consistent, it is effective to prevent safety accidents.

Claims (1)

In the steering device in which the universal joint 122 is connected between the upper shaft 108 and the lower shaft 110 by the stopper bracket 120 and the coupling 124, The hollow pipe 1 which is supported by the rubber 130 to the coupling 124 and protrudes on both sides of the coupling 124 and the stopper bracket 120 are closely supported on one end of the hollow pipe 1. The safety bolt (5) penetrates the stopper bracket (120) and the hollow pipe (1), and the safety racket (3) penetrates and is fixed to the safety bolt (5) to be in close contact with the other end of the hollow pipe (1). Universal joint connection structure of the steering apparatus, characterized in that.