JPH0132562Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a torsion bar anchor structure on the vehicle body side.

(Prior art) Torsion bars are used in independent suspension systems for automobiles, and are attached at both ends to the swing arm on the wheel side and the vehicle body member to buffer the swing of the swing arm. Used when space cannot be secured.

A conventional example of a torsion bar anchor structure on the vehicle body side is shown in Fig. 1 (Utility Model Application No. 108405/1983).

The torsion bar 20 is fitted into the cylindrical portion 22 of the anchor arm 21 by serration connection, and is attached by connecting the arm portion 23 fixed to the cylindrical portion 22 to a vehicle body member using a hanging tool (not shown).

However, in the vehicle body side anchor structure of such a torsion bar, in which the cylindrical portion 22 of the anchor arm is inserted into a cylindrical collar fixed to the vehicle body member, it is necessary to attach and detach the anchor arm 21. may cause difficulties. That is, in the manufacturing process of a car, if other parts such as an exhaust tube or a catalyzer container are attached to the car body while the torsion bar 20 is attached, these parts will interfere with the subsequent removal of the anchor arm 21 and cause the anchor arm 21 to be removed from the car body. Since removal becomes difficult or impossible, there is a problem in that the degree of freedom in layout is significantly impaired.

(Purpose of the invention) This invention was made in view of these conventional problems.A semi-cylindrical part is formed at one end of the collar fixed to the vehicle body member, and an anchor inserted into this part is used. The purpose of this invention is to solve the above problems by creating a structure that allows extraction work to be performed while twisting the arm.

(Example) This invention will be described below with reference to examples shown in FIGS. 2 to 5.

In the figure, reference numeral 1 denotes a vehicle body member that has a U-shaped cross section and extends in the lateral direction of the vehicle body, and has circular holes 2a at opposite positions on both side surfaces 2 and 3, and at least one side has the same diameter as the circular hole 2a. A long hole 3a consisting of a semicircular portion 3a' is provided, into which a hollow collar 4 is inserted and fixed by welding. As shown in FIG. 4, the other end of the collar 4 forms a short cylindrical part 4a that fits into the opening 2a, and one end forms a semi-cylindrical part 4b with half cut out in the radial direction. The semi-cylindrical part 4b is welded to the semi-circular part 3a', and its opening is connected to the elongated hole 3a.

Reference numeral 5 designates a torsion bar whose other end is connected to a swinging arm on the wheel side (not shown) by means of serration connection, etc. As shown in FIG. It is fitted into a serration portion formed on the inner circumferential surface of the cylindrical portion 7 and is serration-coupled so as to be relatively unrotatable. The anchor arm 6 consists of an arm part 8 and a cylindrical part 7 fixed to one end of the arm part 8 and loosely inserted into the collar 4. This cylindrical portion 7 is further integrally provided with an inner protrusion 16 for preventing the torsion bar 5 from coming off. As shown in FIG. 2, the anchor arm 6 has a cylindrical face seat 9 interposed at the other end of the arm portion 8, a bolt 10 is inserted through the bolt 10, and the bolt 10 is inserted into a bracket 11 fixed to the vehicle body member 1. Then, by interposing the spherical seat 12 and screwing the double nuts 13 and 14, the suspension member 15 is connected to the vehicle body member 1.

Next, the action will be explained. According to such an anchor structure of the torsion bar on the vehicle body side, even if the torsion bar 5 is installed in the automobile manufacturing process and parts such as an exhaust tube are subsequently installed close to the anchor arm 6, the torsion bar 5 remains
can be easily removed. That is, after removing the double nuts 13 and 14 and removing the hanging tool 15, the cylindrical part 7 of the anchor arm is pulled to release the serration connection with the torsion bar 5, and the arm part is pulled out from the short cylindrical part 4a of the collar. 8 to a place where it is easy to work, and by twisting and pulling the cylindrical part 7 as shown by the imaginary line in FIG. Can be pulled out in a small work space. The torsion bar 5 can thus be removed.
Furthermore, the torsion bar 5 can be reattached by following the reverse procedure.

(Structure of the invention) As explained above, according to the invention, the structure consists of a hollow collar fixed by penetrating both opposing sides of a vehicle body member having a U-shaped cross section, a cylindrical part, and an arm. The cylindrical part is inserted from one end of the collar to connect the arm part to the vehicle body member, and the cylindrical part is inserted from the other end of the collar and rotates relative to the cylindrical part of the anchor arm. In the car body side anchor structure of the torsion bar, which includes a torsion bar that is fitted into the torsion bar in an immovable manner, a semi-cylindrical part is formed on one end side of the collar, and a long hole connected to the semi-cylindrical part is formed in the car body member. It has an anchor structure.

(Effect of the invention) Therefore, the anchor arm can be installed compactly on the vehicle without creating a large space for removal, and the anchor arm can be easily pulled out and the torsion bar can be installed without being obstructed by parts such as the exhaust tube. The effect is that it can be removed and reinstalled.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a conventional anchor arm, Figure 2 is a sectional view of a conventional anchor arm.
The figure is a front view showing one embodiment of this invention, FIG. 3 is a partially cutaway plan view, FIG. 4 is a perspective view of the collar, and FIG. 5 is a side view showing the main parts of the torsion bar. 1... Vehicle body member, 2, 3... Side surface, 3a... Long hole, 4
... Collar, 4b... Semi-cylindrical part, 5... Torsion bar, 6... Anchor arm, 7... Cylindrical part, 8... Arm part, 15... Hanging tool.

Claims (1)

[Scope of utility model registration request] It consists of a hollow collar that penetrates and is fixed to both opposing sides of a vehicle body member that has a U-shaped cross section, a cylindrical part, and an arm part, and the cylindrical part is inserted from one end of the collar to form an arm. In the vehicle body side anchor structure of the torsion bar, the torsion bar includes an anchor arm whose portion is connected to the vehicle body member, and a torsion bar which is inserted from the other end side of the collar and is fitted into the cylindrical portion of the anchor arm in a relatively unrotatable manner. A vehicle body side anchor structure for a torsion bar, characterized in that a semi-cylindrical portion is formed on one end side, and a long hole connected to the semi-cylindrical portion is formed in a vehicle body member.