JPH06270836A - Tow adjusting mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a toe adjusting mechanism which has a small number of constituent members, is inexpensive, and has good workability. [Structure] The toe adjusting mechanism 10 is provided with a hollow rod 11
And the threaded portion 1 at the end inserted into the hollow rod 11.
A solid rod 12 having 2a, an adjusting nut 13 screwed into a threaded portion 12a of the solid rod 12 and rotatably and axially immovably connected to the hollow rod 11, and together with the adjusting nut 13, Threaded portion 12a of the actual rod 12
It is constituted by a lock nut 14 that is screwed into and regulates the rotation of the adjusting nut 13 by engaging with the adjusting nut 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toe adjusting mechanism for an automobile.

[0002]

2. Description of the Related Art As one of the toe adjusting mechanisms, a first rod having a threaded portion at its end and a threaded portion having a reverse threaded relation to the threaded portion are provided at the end opposed to the first rod. A second rod having, a first nut screwed into a screw portion of the first rod, a second nut screwed into a screw portion of the second rod, and a screw portion of the first rod at one end. There is a pipe constituted by a connecting pipe having a screwing portion for screwing and a screwing portion for screwing with the screw portion of the second rod at the other end, which is disclosed, for example, in Japanese Utility Model Laid-Open No. 59-174966. ing.

[0003]

The above-described conventional toe adjusting mechanism requires five constituent members such as the first rod, the second rod, the first nut, the second nut, and the connecting pipe, which results in cost reduction. There is a problem that it is expensive, and work to loosen the first nut and the second nut,
The toe adjustment needs to be performed by the five-step work of rotating the connecting pipe in such a state and then tightening the first nut and the second nut, and there is room for improvement in workability. The present invention has been made in view of the above circumstances, and an object thereof is to provide a toe adjusting mechanism that has a small number of constituent members, is inexpensive, and has good workability.

[0004]

In order to achieve the above object, in the present invention, the toe adjusting mechanism has a hollow rod and a threaded portion at the end inserted into the hollow rod. A solid rod, an adjustment nut screwed to the threaded portion of the solid rod and rotatably and immovably connected to the hollow rod, and together with the adjustment nut, screwed to the threaded portion of the solid rod. And a lock nut that restricts rotation of the adjusting nut by engaging with the adjusting nut.

[0005]

The toe adjusting mechanism according to the present invention has a hollow rod, a solid rod, an adjusting nut and a lock nut.
Since it is composed of a member, it can be constructed at a lower cost than a conventional toe adjusting member. In addition, the toe adjustment work can be simplified by the three-step work of loosening the lock nut, rotating the adjustment nut in such a state, and then tightening the lock nut. You can

[0006]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an example in which the toe adjusting mechanism 10 according to the present invention is applied to a rear suspension lower arm 20 formed of a rod-shaped body. (Not shown) and a rear arm 22 assembled to a body (not shown) via a bracket 30 and connected to a ball joint 21 at the other end, and to the body at one end via a bush and a bracket (both not shown). It is formed in a substantially V shape by a front arm 23 that is assembled and connected to the ball joint 21 at the other end.

The toe adjusting mechanism 10 has a hollow rod 11, a solid rod 12, and a hollow rod 11, as shown in detail in FIG.
The adjustment nut 13 and the lock nut 14 are formed of four members. The hollow rod 11 is formed integrally with the body-side member 22a of the rear arm 22, and has an annular groove 11a formed on the outer circumference of the end portion. Solid rod 12
Is integrally formed with the ball joint side member 22b of the rear arm 22, and has a threaded portion 12a at the end portion inserted into the hollow rod 11. Adjustment nut 13
Is screwed into the threaded portion 12a of the solid rod 12,
The hollow rod 11 is provided with an annular engaging protrusion 13a provided at the left end of the drawing.
Hollow rod 11 by caulking into the annular groove 11a of
Is rotatably and immovably connected in the axial direction. The lock nut 14 together with the adjusting nut 13 is the solid rod 1.
It is screwed into the second screw portion 12a and regulates the rotation of the adjusting nut 13 by engaging with the adjusting nut 13.

In the present embodiment constructed as described above, the toe adjusting mechanism 10 includes the hollow rod 11 and the solid rod 1.
2, the adjusting nut 13, and the lock nut 14 are included, and the cost can be reduced compared to the conventional toe adjusting member. In addition, the toe adjustment work can be simplified by the three-step work of loosening the lock nut 14, rotating the adjusting nut 13 in such a state, and then tightening the lock nut 13. Can be converted.

3 and 4 show another embodiment of the present invention. In the toe adjusting mechanism 10 shown in this embodiment, the hollow rod 11 is formed with a non-circular hollow portion 11b, and The non-circular shaft portion 12 whose rotation is regulated by fitting the real rod 12 into the non-circular hollow portion 11b of the hollow rod 11.
b is provided. Therefore, in this embodiment, the relative rotation amount between the body side member 22a and the ball joint side member 22b of the rear arm 22 can be reduced, and the body side member 22a and the ball joint side member 2 can be reduced.
The swing angles of the bush (not shown) and the ball joint 21 which are respectively attached to the end portions of 2b can be suppressed, and the durability of the bush (not shown) and the ball joint 21 is improved as compared with the above embodiment. Can be made.
The rest of the configuration, functions and effects are the same as those of the above-mentioned embodiment, so the description thereof is omitted.

In each of the above embodiments, the toe adjusting mechanism 10 according to the present invention is applied to the rear arm 22 of the rear suspension lower arm 20 formed of a rod-shaped body. Not only the arm 23 but also other portions (for example, a tie rod of the steering linkage) can be implemented in the same manner or by appropriately changing them.

[Brief description of drawings]

FIG. 1 is a perspective view of a rear suspension lower arm including a toe adjusting mechanism according to the present invention.

FIG. 2 is an enlarged sectional view of the toe adjusting mechanism shown in FIG.

FIG. 3 is an enlarged sectional view showing another embodiment of the toe adjusting mechanism.

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

[Explanation of symbols]

10 ... Toe adjusting mechanism, 11 ... Hollow rod, 11a ... Annular groove, 12 ... Solid rod, 12a ... Thread part, 13 ... Adjusting nut, 13a ... Annular engaging protrusion, 14 ... Lock nut.

Claims (1)

[Claims] 1. A hollow rod, a solid rod having a threaded portion at an end to be inserted into the hollow rod, a threaded portion of the solid rod being rotatable and rotatable with the hollow rod. A toe adjustment configured by an adjustment nut that is immovably connected in a direction, and a lock nut that is screwed together with the adjustment nut to a threaded portion of the solid rod to restrict rotation of the adjustment nut by engagement with the adjustment nut. mechanism.