JPH03132464A - Brake pipe laying structure - Google Patents

Abstract

PURPOSE:To control idling vibration and reduce operation noises by supporting an actuator of an anti-skid control device with a soft resilient member in the vertical direction, making it displaceable, and by reducing the stress with bend ing and twisting of a brake pipe. CONSTITUTION:With the aid of a rubber mount 3 an actuator 2 of an anti-skid control device is secured onto a side member 1 at the front of a car. This rubber mount 3 is formed by joining a bracket 4 on the car body side with another bracket 5 on the actuator side, with a wide and thin rubber member 6 interposed. The actuator 2 is supported by the actuator side bracket 5, and the car body side bracket 4 is fixed to the side member 1. Thereby the actuator 2 is borne rigidly with the compression force of the rubber 6 in the fore and aft direction X of the car and is supported rigidly with the large width of rubber 6 in the left and right direction Y of the car, and supported softly with large thickness of rubber 6 in the vertical direction Z of the car.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to an anti-skip arrangement structure for a brake pipe attached to an actuator of a control device. The present invention relates to a brake pipe arrangement structure that acts as a dynamic vibration damper to suppress idling vibrations and reduces actuator operation noise.

[Prior Art] As an arrangement structure of a brake pipe connected to an actuator of a conventional anti-skid control device, for example, the one described in Japanese Patent Application Laid-Open No. 61-232955 is known.

The actuator of this conventional anti-skid control device employs a vibration-proof structure to reduce operating noise. Therefore, the vehicle is supported with vibration isolation through hard elastic bodies in all of the longitudinal, lateral, and vertical directions.

(Problem to be Solved by the Invention) However, in the arrangement structure of the brake pipe connected to the actuator of such a conventional anti-skid control device, the vehicle is rigidly supported in all of the longitudinal, lateral, and vertical directions. Because the structure was designed to suppress displacement, the bounce resonance frequency of the actuator is higher than the idle vibration frequency range (20-30Hz), and the actuator acts as a mass against the skeletal vibration of the vehicle body, promoting idle vibration. There was a problem in that it caused discomfort to the passengers.

This invention was made by focusing on such conventional problems, and it is designed to suppress idle vibration and reduce the operating noise of the actuator by making the actuator act as a dynamic damper in the idle vibration frequency region. The object of the present invention is to provide a brake pipe arrangement structure that has the following characteristics.

(Means for Solving the Problems) Therefore, in the arrangement structure of the brake pipe according to the present invention, the actuator of the anti-skin F control device is connected to the vehicle body through a hard elastic body in the longitudinal and lateral directions of the vehicle. The brake pipe is attached to the lower part of the vehicle via a soft elastic body, and the brake pipe is arranged a predetermined distance from the actuator in the front and back direction, and then bent left and right to make this left and right part straight. The straight portion of the brake pipe is twisted as a torsion bar by vertical displacement of the actuator.

[Operation] The actuator of the anti-skid control device is supported by a hard elastic body in the longitudinal and lateral directions of the vehicle and by a soft elastic body in the vertical direction, and is displaced in the vertical direction. However, the brake pipe connected to the actuator is arranged a predetermined distance in the front-rear direction, and then bent in the left-right direction and the left six directions are arranged in a straight line.
The stress on the brake pipe due to the vertical displacement of the actuator is reduced by twisting the straight portion of the brake pipe as a torsion bar. Therefore, the actuator and the elastic body can act as a dynamic damper in the idle vibration frequency range w4,
Since the idle vibration is suppressed and the actuator is supported in a vibration-proof manner, operating noise is reduced.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

First, the configuration will be explained.

In FIG. 1, an actuator 2 of an anti-skid control device is fixed by a rubber mount 3 on a side member 1 at the front of a vehicle.

For example, as shown in FIGS. 2 and 3, this rubber mount 3 is constructed by joining a vehicle body side bracket 4 and an actuator side bracket 5 with a wide and thin rubber 6, Actuator side bracket 5
The actuator 2 is supported, and the vehicle body side bracket 4 is fixed to the side member 1. As a result, the actuator 2 is rigidly supported in the vehicle longitudinal direction , is supported softly by the thin thickness of the rubber 6. Therefore, the actuator 2 is
There is almost no displacement in the vertical direction, but there is displacement in the vertical direction Z.

In this case, in the vertical direction Z of the vehicle, the actuator 2 acts as a dynamic damper with the actuator 2 as a mass and the rubber 6 as an elastic body against vertical vibrations in the idle vibration frequency range (20 to 30 Hz).

Further, as shown in FIGS. 4 and 5, a rubber mount 11 is connected between the vehicle body side bracket 8 and the actuator side bracket 9 with four wide and thin rubber pieces 10 on the left and right, top and bottom. may also be used. In this case as well, the rubber mount 11 is hard in the longitudinal direction acts as a dynamic damper.

Alternatively, as shown in FIG. 6, the vehicle body side bracket 13
is extended to the side of the actuator 2, and its extension part 13a
At the same time, fix the stopper rubber 14 to the rubber 15.
The rubber mount 16 may be formed by narrowing the width of the rubber mount 16. According to this rubber mount 16, especially in the left and right direction
displacement is prevented. And this rubber mount 16
Also, the rigidity in the front-rear direction X and the left-right direction Y is high,
The rigidity in the vertical direction Z is softened, and the actuator 2 acts as a dynamic damper with the actuator 2 as a mass and the rubber 15 as an elastic body.

Returning to FIG. 1, the brake pipe 18 connected to the actuator 2 is explained sequentially from the actuator 2 side. First, it is arranged upward, then bent toward the rear of the vehicle, and then diagonally downward. The bent portion 18a is formed by bending the bent portion 18a.

Next, it is arranged along the hood ridge 19 of the vehicle body,
Until now, they have been generally arranged along the front-rear direction. Then, it is bent at right angles at the dash panel 20 and fixed to the dash panel 20 with clips 21 . The brake pipe 18 extends straight in the left-right direction of the vehicle along the dash panel 20 to form a straight portion 18b, and this straight portion 18b is connected to a fixed connector 22 fixed to the dash panel 20.

Next, the operation of the above embodiment will be explained.

The actuator 2 is rigidly supported by the rubber mount 3.1116 in the longitudinal direction X and the lateral direction Y of the vehicle and hardly displaces, but is supported softly in the vertical direction Z and is therefore displaced. In this case, the actuator 2 and the elastic body of the rubber 6.10.15 act as a dynamic damper in the idle vibration frequency range of 20 to 30 Hz, and work in the opposite phase to the idle vibration to damp the idle vibration. do.

When the actuator 2 vibrates vertically, the bending of the brake pipe 18 is absorbed by the bent portion 18a, and
The straight portion 18b along the dash panel 20 acts as a torsion bar whose arm is a distance l from the connecting portion of the actuator 2 to the straight portion 18b.
reduces stress by twisting.

Fig. 7 shows the relationship between the frequency of vibration in the vertical direction Z and the vibration isolation rate. It acts in the opposite phase to the vibration and suppresses it. At a frequency of 50 Hz or higher, vehicle body vibration is blocked, and at a frequency of 80 Hz or higher, it acts as an excitation force on the actuator 2.

In the above-described embodiment, the description has been made regarding one brake pipe 18 connected to the actuator 2, but the same applies to a case where there are a plurality of brake pipes.

[Effects of the Invention] As explained above, according to the arrangement structure of the brake pipe according to the present invention, the actuator of the anti-skin F control device is supported and displaceable in the vertical direction via a soft elastic body, and the brake pipe is The structure reduces stress by bending and twisting the pipe, reducing stress in the brake pipe and ensuring durability.The actuator and elastic body act as a dynamic damper to suppress idling vibration. , it is possible to obtain the effect that the operating noise of the actuator can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the brake pipe arrangement structure according to the present invention, FIG. 2 is a plan view showing an embodiment of the actuator support structure, and FIG. 3 is a side view of FIG. 4 is a plan view showing another embodiment of the actuator support structure, FIG. 5 is a side view of FIG. 4, FIG. 6 is a plan view showing still another embodiment of the actuator support structure, and FIG. 7 is a graph showing the relationship between frequency and vibration isolation rate. 1... Side member, 2... Actuator, 31
1.16...Rubber Mound I...6,10.15...
・Rubber, 18... Brake pipe, 18a... Bent part, 18b... Straight part, 19... Foot ridge,
20...Dash panel.

Claims (1)

[Claims] The actuator of the anti-skid control device is attached to the vehicle body through a hard elastic body in the longitudinal and lateral directions of the vehicle, and through a soft elastic body in the vertical direction of the vehicle, and the brake pipe is connected from the actuator in the longitudinal direction. The brake is arranged a predetermined distance on the brake pipe, and is further bent in the left-right direction, and the left-right part is arranged in a straight line, and the straight part of the brake pipe is twisted as a torsion bar by vertical displacement of the actuator. Pipe arrangement structure.