KR19980035582A - Torsion Bar Spring Fastening Structure - Google Patents

Abstract

The present invention relates to a fastening structure of the torsion bar spring, the first seat (3) is inserted into the vehicle body (1) through the mounting bracket (2) having a groove is fixedly attached to the lower portion, the mounting bracket ( As the torsion bar spring 4 is inserted into the groove of 2), a part of the support pipe 5 attached integrally with the anchor arm 6 is inserted, and the groove is formed at one end of the anchor arm 6. The second sheet 7 is inserted into the groove, and the threaded portion is formed inside the first sheet 3, while the fastening bolt 8 is inserted through the second sheet 7 to the head portion thereof. The second seat 7 is supported by the 8a, and the other end of the fastening bolt 8 is fitted to the first seat 3 to be fastened to the threaded portion, thereby shortening the length of the fastening bolt. To prevent interference with other parts to prevent damage to the fastening bolts. It is also effective in reducing costs by reducing the number of items.

Description

Torsion Bar Spring Fastening Structure

The present invention relates to a torsion bar spring constituting a suspension device of an automobile, and in particular, to reduce the length of the fastening bolt for fastening the anchor arm through which the torsion bar spring is penetrated to the mounting bracket attached to the vehicle body, The present invention relates to a fastening structure of a torsion bar spring capable of preventing interference and preventing breakage of the bolt, as well as reducing the number of parts.

In general, the suspension system of a car connects the axle and the body to control the axle while driving so that vibrations or shocks received from the road are not directly transmitted to the body, thereby preventing damage to the body and cargo and improving ride comfort. It includes a chassis spring for mitigating impact, a shock absorber for controlling the free vibration of the chassis spring to improve ride comfort, and a stabilizer for preventing rolling of the vehicle.

The suspension is divided into a front suspension and a rear suspension according to the mounting portion of the vehicle, and the rear suspension is of axle type of parallel leaf spring type and coil spring type, swing axle type and trailing arm type and There are semi-trailing arm types and a diagonal link type.

Here, the chassis spring is installed between the vehicle body and the wheels so as to absorb shocks and vibrations of the wheels from the road surface when the vehicle is driven and not transmit them to the vehicle body. The metal springs, coil springs and torsion bar springs are made of metal. Etc. In addition, rubber springs and air springs are also used.

1 is a perspective view illustrating a state where the conventional torsion bar spring is mounted on a vehicle body, and the mounting bracket 12 is fixedly attached to the vehicle body 11 by welding or the like, and the mounting bracket 12 is attached to the vehicle body 11. The anchor arm 14, through which the torsion bar spring 13 is penetrated, is fastened through the bolt. That is, a through hole is formed in the mounting bracket 2, and the first sheet is formed in the through hole. 15) is rotatably fitted and supported, and a recess is formed in the lower portion of the anchor arm 14 so that the second sheet 16 is pivotably fitted in the recess, and the first and second sheets 15 and 16 are rotated. Is fastened through the long bolt 17 and the plurality of nuts 18, respectively.

The method of mounting the above-mentioned torsion bar spring 13, first, as shown in Figure 1, the anchor arm 14 from the A position where the torsion stress is not applied to the torsion bar spring 13, the long bolt 17 Rotate to position B to impart proper torsional stress to the torsion bar spring 13, and in this state, the nut 18 is tightened and fixed.

However, in the conventional torsion bar spring fastening structure described above, after raising the anchor arm to the B position to give the torsion stress to the torsion bar spring, a part of the long bolt remains unnecessarily, and a part of the long bolt Not only does it interfere with other parts during the exercise, but also the interference could damage the long bolts and reduce the stability of the car.

Accordingly, the present invention has been devised to solve the above-mentioned drawback, and by rotating the anchor arm to the torsion bar spring torsional stress is applied to the mounting bracket of the vehicle body to be fastened to the mounting bracket so that there is no remaining part and other parts It is an object of the present invention to provide a fastening structure of a torsion bar spring that can avoid interference and prevent damage as well as reduce the number of parts.

1 is a perspective view showing a fastening structure of a torsion bar spring according to the prior art,

2 is a side cross-sectional view of FIG.

3 is a perspective view showing a fastening structure of a torsion bar spring according to the present invention;

4 is a side cross-sectional view of FIG. 3.

* Description of the symbols for the main parts of the drawings *

1: Body 2: Mounting Bracket

3: first sheet 4: torsion bar spring

5: support pipe 6: anchor arm

7: 2nd sheet 8: Fastening bolt

9: nuts

The present invention for achieving the above object, the first seat is inserted through the vehicle body while the lower portion of the mounting bracket is formed to be fixed to the groove is fixed, the torsion bar spring is fitted into the groove of the mounting bracket anchor A portion of the pipe integrally attached to the arm is inserted, and a recess is formed at one end of the anchor arm so that a second sheet is inserted into the recess, and a thread is formed inside the first sheet. The fastening bolt is inserted through the seat to support the second sheet by the head, and the other end of the fastening bolt is fitted to the first sheet to be fastened to the threaded portion.

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

Figure 3 is a perspective view showing a fastening structure of the torsion bar spring according to the present invention, Figure 4 is a side cross-sectional view of Figure 3, that is, the mounting bracket (2) is fixedly attached to the vehicle body (1) by welding or the like method The through-hole is formed in a portion adjacent to one end of the mounting bracket 2, and the first sheet 3 is inserted into the through-hole so as to be penetrated therethrough, and a recess is formed in the lower portion of the mounting bracket 2. have.

A support pipe 5 is fitted and fixed to the outer circumference of the torsion bar spring 4 having both ends fixed to the vehicle body. The support pipe 5 penetrates the anchor arm 6 and is integrally attached thereto. The anchor arm 6 has a part inserted into the mounting bracket 2 so that the support pipe is in close contact with the groove of the mounting bracket 2.

In addition, as the groove is formed at one end of the anchor arm 6, the second sheet 7 is inserted into the groove, and the fastening bolt 8 is inserted into the second sheet 7 so that the fastening bolt 8 The other end of the fastening bolt 8 is inserted into the first sheet 3 to be fastened with a thread formed in the first sheet.

That is, the first sheet 3 has a T-shape, and a threaded portion is machined therein along the longitudinal direction, so that the fastening bolt 8 is screwed into the threaded portion.

In the method of fastening the torsion bar spring with the above-described fastening structure, the fastening bolt 8 is inserted through the second sheet, and then the other end of the fastening bolt is inserted into the first sheet and screwed. The torsional stress is applied to the torsion bar spring while the anchor arm is rotated counterclockwise. By adjusting the screwing length of the fastening bolt 8 and the first seat, the torsional stress is applied to the torsion bar spring. You can freely adjust.

In the structure fastened as described above, the length of the fastening bolt can be made shorter than before, and since the head 8a of the fastening bolt is in close contact with the second sheet, the fastening bolt is fastened with the fastening bolt as in the related art. Since the remainder of the plug will not remain, it will not interfere with other components, so that the fastening bolt will not be broken.

And only one nut 9 is fastened to the distal end of the first sheet to prevent the fastening bolt from loosening.

Therefore, the number of parts of the nut is also reduced compared to the conventional, it is possible to reduce costs by reducing the number of parts as a whole.

As described above, according to the fastening structure of the torsion bar spring according to the present invention, the length of the fastening bolt is shortened so as not to interfere with other components, thereby preventing the fastening bolt from being damaged and reducing the number of parts, thereby reducing costs. It can be effective.

Claims (2)

As the first seat 3 is inserted through the vehicle body 1, a mounting bracket 2 having a groove is fixedly attached to the lower portion thereof, and a torsion bar spring 4 is fitted into the groove of the mounting bracket 2. While a portion of the support pipe 5 attached integrally with the anchor arm 6 is inserted, and a recess is formed at one end of the anchor arm 6, and the second sheet 7 is inserted into the recess. While the threaded portion is formed inside the first sheet 3, the fastening bolt 8 is inserted through the second sheet 7 so that the second sheet 7 is supported by the head 8a. In addition, the other end portion of the fastening bolt (8) is a fastening structure of a torsion bar spring made of a structure that is fitted to the first seat (3) and fastened to the threaded portion. The torsion according to claim 1, wherein an anti-loosening nut 9 is fastened to the distal end of the first seat 3 in order to prevent the fastening bolt 8 and the first seat 3 from being loosened. Bar spring fastening structure.