JPS642804Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a wheel alignment adjustment mechanism.
In particular, wheel alignment allows for continuous stepless adjustment when adjusting the camber angle, and also enables reliable fixed support of the shaft member interposed between the link arm of the suspension system and the vehicle frame. This relates to an adjustment mechanism.

[Conventional technology]

Generally, automobiles are configured such that a suspension device is provided between the wheels and the vehicle body so that the impact received by the wheels from the road surface is not directly transmitted to the vehicle body.

Figures 1 and 2 show an example of a double
This figure shows a schematic configuration of a Uitshubone type suspension system.

The wheel 1 has two parallel link arms 3 and 4 (3
It is connected to the vehicle body by an upper arm and a lower arm. Further, a shock absorber 6 is provided between the link arm 4 and the vehicle frame 5 to absorb shock.

A shaft member 8 is interposed in each of the vehicle body-side connecting portions 7 of the link arms 3 and 4, and the link arms 3 and 4 rotate in parallel to each other about the shaft member 8, thereby rotating the wheels 1. will be allowed to move up and down. .

Incidentally, wheel alignment is generally set for the front wheels of automobiles in order to improve running stability and steering operability, and one of these elements, camber, is the alignment of the wheels 1 relative to the vertical axis 9, as shown in FIG. is expressed by the inclination angle θ.

Figure 3 shows the link arm 3 and the vehicle body side frame 5.
However, regarding alignment, there are generally variations in the molding accuracy of the frame 5, which causes errors during assembly, so final adjustment is required. Normally, when adjusting the camber, several shim plates 10 are inserted between the frame 5 and the shaft member 8, and the frame 5 and the shaft member 8 are spaced apart from each other by the thickness of the shim plates 10. The inclination angle θ of the wheel 1 is adjusted by pulling the link arm 3 into the vehicle body or pushing it outward.

[The problem that the idea aims to solve]

By the way, when the shim plates 10 are clamped and tightened with the bolts and nuts 11 in this way, the plurality of shim plates 10 tend to shift from each other due to vibrations, etc., and as the number of shim plates increases, this tendency increases, and the tightened parts may become loose. It was the cause.

Furthermore, since the distance between the shaft member 8 and the frame 5 is determined by the number of shim plates 10, the adjustment value changes in stages. There is a problem in that the thickness of the sheet becomes thinner and the number of sheets increases as a result, and furthermore, the adjustment work is extremely complicated.

In addition, as shown in FIGS. 4 and 5, two parallel guide portions 12 and a long hole 13 are provided between them.
A guide plate 14 having a diameter of
A washer 15 having different outer circumferential diameters from its axis is attached to the guide portion 12.
The washer 1 is disposed in between, and as the shaft member 8 rotates, the washer 1
5 rotates while contacting the guide portion 12, and the shaft member 8
The link arm moves within the elongated hole 13 to adjust the position of the link arm 3.
(See Publication No. 24371).

However, the above configuration can only be used in a type in which the shaft member 8 passes through the vehicle body side frame 5.

The present invention has been devised in view of the above-mentioned problems and to effectively solve them.

The purpose of this invention is to enable continuous stepless adjustment when adjusting the camber angle, and to reliably fix and support the shaft member interposed between the link arm of the suspension system and the vehicle frame. The purpose of the present invention is to provide a wheel alignment adjustment mechanism that allows for the alignment of wheels.

[Means and actions to solve the problem]

The present invention consists of a rotating body that is rotatably supported on a vehicle body frame and has a relatively large diameter, a shaft member that is provided at an eccentric position of the rotating body, and one end of which is attached to the shaft member and the other end of the rotating body that is a link arm that is connected to a wheel and adjusts the camber angle by eccentrically moving a shaft member due to the rotation of the rotating body, and a link arm that surrounds the peripheral side of the rotating body from the frame side and rotates at the folded part thereof It consists of a U-bolt that regulates and locks the rotation of the wheel.The shaft member is eccentrically moved relative to the rotating body to adjust the camber angle of the wheel, and after adjusting the camber angle, the rotation is The body is surrounded by U-bolts from the frame side in the circumferential direction and a large tightening force is applied to reliably restrict the rotation of the rotating body.

〔Example〕

A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

6 and 7 show an alignment adjustment mechanism according to the present invention.

As shown in the figure, a connecting portion 7 of the link arm 3 to the vehicle body side is attached to a frame 5 on the vehicle body side via a shaft member 8 called a fulcrum pin.

Although not shown, an elastic member such as rubber is wound around the outer periphery of both ends of the shaft member 8 in the axial direction, and the connecting portion 7 of the link arm 3 grips this from the outer periphery. The link arm 3 is connected to be swingable about the shaft member 8 in order to absorb the impact from the wheel side by the elasticity of the elastic member. A rotating body 16 is formed on the shaft member 8 by a flange-like disk extending radially outward from the shaft member 8 . The shaft member 8 is held at a position where its shaft center 18 is eccentric with respect to the center 17 of the rotating body 16, and as the rotating body 16 rotates around the center 17, the shaft member 8 also rotates around the center 17. is configured to do so.

A pillow member 19 having an engaging curved surface along the circumferential side of the rotating body 16 is clamped between the rotating body 16 and the frame 5 on the vehicle body side.
is configured to maintain a constant distance from the surface of the

The rotating body 16 is configured such that a portion of its circumferential side portion is surrounded along the circumferential direction by the U-bolt 20, and rotation is restricted and locked at the folded portion thereof. As shown in FIG. 8, an engagement groove 21 that engages with the U-bolt 20 is formed in an annular shape along the circumferential direction of the rotating body 16 to increase the tightening force of the U-bolt 20. ing.

Next, the operation of the present invention will be explained.

First, when performing alignment adjustment, loosen the U-bolt 20 that locks and supports the rotating body 16 on the frame 5 side, and rotates the rotating body 16 freely around its center 17, thereby aligning the shaft. The member 8 is also rotatable around the center 17. When the rotating body 16 rotates along the inner circumference of the U-bolt 20 and the pillow member 19, the distance between the center 17 of the rotating body 16 and the surface of the frame 5 on the vehicle body side is constant; The distance between the frame 5 and the shaft member 8 that rotates will be from far apart to close to each other. As this distance changes, the link arm 3 is pulled inward or pushed out of the vehicle body, thereby continuously changing the inclination angle θ of the wheel 1 with respect to the vertical axis 9 (shown in FIG. 1). Can be adjusted steplessly.

Furthermore, since the link arm 3 cannot rotate around the center 17 as the rotating body 16 rotates, the gripping force of the connecting portion 7 of the link arm 3 at both ends of the shaft member 8 in the axial direction is loosened. The shaft member 8 may be rotatable within the shaft member 7, or an insertion hole (not shown) for the shaft member 8 may be formed in the rotating body 16.
During alignment adjustment, the shaft member 8 is
The shaft member 8 may be made rotatable and fixed after adjustment to restrain the shaft member 8 to the rotating body 16.

Further, since the rotation of the rotating body 16 is restricted and locked by the U-bolt 20, and a large tightening force is applied to the rotating body 16, loosening due to vibration or the like can be prevented as much as possible.

Further, if a scale is provided on the circumferential side of the rotary body 16 to display the degree of rotation of the rotary body 16, adjustment work can be performed based on the scale, thereby simplifying the work.

[Effect of idea]

As is clear from the above description, the present invention provides the following excellent effects.

(1) Continuous stepless adjustment is possible when adjusting the camber angle.

(2) The shaft member interposed between the link arm of the suspension system and the vehicle body frame can be securely supported, and loosening due to vibration etc. can be prevented as much as possible.

(3) Adjustment work is easy.

(4) The structure is simple and can be easily adopted.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a schematic configuration of wheels and a suspension system, FIG. 2 is a plan view showing a schematic configuration of a wheel and a link arm of a suspension system, and FIG. 3 is a plan view showing a conventional alignment adjustment mechanism. 4 is a side sectional view showing another conventional alignment adjustment mechanism, FIG. 5 is a front view of FIG. 4, FIG. 6 is a side view showing an embodiment of the alignment adjustment mechanism according to the present invention, and FIG. is a view taken along the - line in FIG. 6, and FIG. 8 is a view taken along the - line in FIG. 7. In the figure, 3 and 4 are link arms, 5 is a frame, 8 is a shaft member, 16 is a rotating body, and 20 is a U bolt.

Claims (1)

[Scope of utility model registration request] A rotating body rotatably supported by a vehicle body frame and having a relatively large diameter, a shaft member provided at an eccentric position of the rotating body, one end of which is attached to the shaft member, and the other end of which is attached to a wheel. A link arm that adjusts the camber angle by eccentrically moving a shaft member due to the rotation of the rotary body when connected to each other; Wheel alignment adjustment mechanism with U-bolts for regulating and locking.