JPH0410087Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to a lower arm structure of a suspension in an automobile.

(Prior art) An automobile suspension is provided with a lower arm that supports the wheels on the vehicle body side, and the lower arm is formed so that the cross section is approximately inverted U-shaped, and is tilted downward toward the wheels. (For example, Japanese Utility Model Application Publication No. 59-192407).

(Problem that the invention seeks to solve) By the way, for example, when driving in the rain, water on the road is splashed up by the wheels, but when this water is directed towards the lower arm of the above configuration, it forms an inverted U-shape. It temporarily stays inside the lower arm, which is then flowed to the wheels through the inside of this lower arm. In this case, if the wheel is provided with a brake device, for example, the water may flow toward the brake device and enter the inside thereof, causing a disadvantage that the brake function may be deteriorated.

Further, when jacking up the vehicle body, the lower arm is conveniently located as a jack receiving part when jacking up the vehicle, and is reliable in terms of strength. However, since the lower arm is inclined, there is a risk that the lower arm and the jack may rub relative to each other when the jack is lifted.

(Purpose of the invention) This invention was made by paying attention to the above-mentioned circumstances, and water may flow inside the lower arm to the wheel side and enter, for example, the brake device installed on this wheel. To suppress the occurrence of such inconveniences and to simplify a structure for jacking up a vehicle body using a lower arm.

(Structure of the invention) The features of this invention to achieve the above object are that the lower arm that supports the wheels on the vehicle body side is formed so that the cross section is approximately inverted U-shape, and that the lower arm supports the wheels on the vehicle body side. In the suspension of an automobile tilted downward toward the side, a partition member is provided to partition the inside of the lower arm near the wheel in the longitudinal direction of the lower arm, and a jack receiving portion is formed on the lower surface of the partition member.

(Example) Hereinafter, an example of this invention will be described with reference to the drawings.

In the figure, A is the road surface, 1 is the car body, and 2
is a front wheel, and this front wheel 2 is supported by the vehicle body 1 via a suspension 3. Reference numeral 4 designates a front axle, one end of which is connected to the front wheel 2, and the other end of which is operatively connected to an engine (not shown).

The front wheel 2 is composed of an accelerator hub 5 connected to the front axle 4, a wheel 6 attached to the accelerator hub 5, and a tire 7 attached to the wheel 6.

To explain the suspension 3, a steering knuckle 10 is supported coaxially with the accelerator hub 5 so as to be relatively rotatable, and the upper part of the steering knuckle 10 is supported on the vehicle body 1 by an upper arm 11. , the lower part of the steering knuckle 10 is supported by the vehicle body 1 by a lower arm 12. Further, a shock absorber (not shown) is installed between the upper arm 11 and the vehicle body 1. Further, in the above case, the upper arm 11 and the lower arm 12 are connected to the steering knuckle 10 by ball joints 13 and 13', respectively, and the upper arm 11 and the lower arm 12 and the vehicle body 1 are connected to the pivot shafts 14 and 14'. are connected.

The lower arm 12 is configured to be inclined downward toward the front wheel 2, and has an inverted U-shaped cross section.

The rotation of the upper arm 11 and the lower arm 12 about the ball joints 13, 13' and the pivot shafts 14, 14' allows the front wheel 2 to move in the vertical direction relative to the vehicle body 1, and the front wheel 2 receives from the road surface A. The shock is absorbed by the shock absorber (not shown). Further, this front wheel 2 can be steered around an imaginary axis connecting the ball joints 13 and 13' by a steering device (not shown) connected to the steering knuckle 10.

A brake device 16 is provided on the inner side of the wheel 2 in the vehicle width direction. This brake device 16 includes a brake drum 1 that rotates together with the accelerator hub 5.
7, a disc-shaped bucking plate 18 that covers the open end of the brake drum 17 and is supported by the steering knuckle 10; The front wheel 2 is braked by pressing the brake drum 17 against the brake shoe 19.

In the above case, since the brake drum 17 and bucking plate 18 rotate relative to each other, a small gap is formed between them. Therefore, there is a possibility that rainwater may enter the brake drum 17 through this gap (arrow B in FIG. 1).
If such rainwater enters, the brake system 16
This will result in a decline in functionality.

In the above configuration, a partition member 2 is provided near the front wheel 2 at a midway point in the longitudinal direction of the lower arm 12 to partition the groove 12a in the lower arm 12 in the longitudinal direction.
1 is provided. This partition member 21 is formed by bending a plate material into an L-shape when viewed from the side, and is a vertical plate 2 that is welded to the inner peripheral surface of the groove 12a of the lower arm 12 and closes this groove 12a in the longitudinal direction.
1a, and a horizontal plate 21b extending from the lower edge of the vertical plate 21a and welded to the opening edge of the groove 12a.

A jack receiving portion 22 is formed by the horizontal plate 21b. That is, the center part of the horizontal plate 21b is bulged downward to form a spherical surface 22a, and this spherical surface 22a is formed to fit into a recess on the upper surface of the lifting part of the jack 23, so that the horizontal plate 21b and the jack 23 are connected to each other when the jack is raised. Relative sliding is prevented.

(Effects of the invention) According to this invention, a partition member is provided that partitions the inside of the lower arm near the wheel in the longitudinal direction of the lower arm, so water flowing along the lower arm is drained by the partition member. Therefore, it is effectively suppressed that this water travels along the lower arm and enters, for example, a brake device provided on a wheel.

Further, since a jack receiving portion is formed on the lower surface of the partition member and the partition member is also used as the jack receiving portion, the structure for jacking up the vehicle body using the lower arm is simplified.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; FIG. 1 is a longitudinal sectional view thereof, FIG. 2 is a perspective view showing a lower arm and a partition member, and FIG. 3 is an enlarged view of a portion of FIG. 1. DESCRIPTION OF SYMBOLS 1... Vehicle body, 2... Front wheel (wheel), 3... Suspension, 12... Lower arm, 21... Partition member, 22... Jacket receiver.

Claims (1)

[Scope of utility model registration request] In an automobile suspension in which the lower arm that supports the wheel on the vehicle body side is formed so that the cross section is approximately inverted U-shaped, and the lower arm is tilted downward toward the wheel side, the inside of the lower arm near the wheel is A lower arm structure for a suspension, characterized in that a partition member is provided for partitioning the lower arm in the longitudinal direction, and a jack receiving portion is formed on the lower surface of the partition member.