JPS62134367A - Structure for installing brake pipe for vehicle - Google Patents

Abstract

PURPOSE:To miniaturize the structure of a suspension by relating the installing structure of a brake pipe to a suspension device of a wheel and making said brake pipe which is installed along a suspension arm, twisted to absorb the swing of said arm when said arm is swung. CONSTITUTION:A brake pipe 9 for feeding brake fluid pressure to a brake mechanism 8 provided on a wheel 1, is made of steel pipe ranging over the whole length, and one end side of the pipe 9 is piped so as to run along a suspension arm 3 which is swingable around a rotary shaft 6, and installed to the arm 3 via installing brackets 10. The brake pipe 9 is extended from the arm 3 side installing part to the vicinity of the rotary shaft 6 nearly in parallel with the shaft 6, and installed to a floor panel 13. After the brake pipe 9 is curved into a U-shape from the installing part on the floor-panel 13 side, it is extended toward the center part in the width direction, and the U-shaped part is installed to the floor panel 13 via an installing bracket 15.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a brake pipe arrangement structure for an automobile.

(Prior Art) In conventionally known automobiles, a brake pipe that supplies working pressure to a brake mechanism that brakes the rotation of a wheel is disposed along an appropriate route from the master turn cylinder to the wheel (for example, (See Utility Model Application Publication No. 59-63066). That is, in conventionally known automobiles, there has been no technical idea to associate the brake pipe arrangement structure with the wheel suspension system. Note that it has already been proposed to connect the end of the brake pipe on the wheel cylinder side via a flexible joint to cope with wheel vibration (for example,
(Refer to Utility Model Application Publication No. 59-546759). However, in this case as well, there is no attempt to relate the brake pipe arrangement structure to the wheel suspension system.

(Object of the Invention) The present invention provides a wheel support unit that has one end connected to a wheel support portion that rotatably supports a wheel, and the other end of which is rotatably pivoted around a rotating shaft that is located on the vehicle body side and extends in the width direction of the vehicle. The purpose of this technology is to enable the vibration of the suspension arm to be absorbed by the twisting of the brake pipe by relating the arrangement structure of the brake pipe to the wheel suspension system in a vehicle equipped with a suspension arm. It is.

(Means for Achieving the Object) In the present invention, as a means for achieving the above object, one end is connected to a wheel support part that rotatably supports the wheel, and the other end is located on the vehicle body side in the vehicle width direction. In the automobile, the vehicle is provided with a suspension control arm rotatably mounted around a rotation axis extending in the vehicle, and is provided with a brake pipe that supplies working pressure to a brake mechanism that brakes the rotation of the wheels. A brake pipe that is piped to the suspension arm is arranged approximately parallel to the rotation axis that is the pivot point on the vehicle body side, and one end of the brake pipe is attached to the suspension engine arm, while the other end is attached to the suspension arm. It is attached to the vehicle body at a position away from the arm side attachment part in the vehicle width direction.

(Function) In the present invention, the following effects can be obtained by the above means.

That is, when the suspension arm swings around the rotation axis that is the pivot point on the vehicle body side, it is arranged approximately parallel to the rotation axis, and one end is used as the suspension arm and the other end is used as the suspension arm. The brake pipe attached to the vehicle body at a position away from the side attachment portion in the vehicle width direction twists as the suspension arm swings, and the swing of the suspension arm is absorbed by the twisting.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

In the automobile of this embodiment, one end 3a is connected to a wheel support part (i.e., spindle) 2 that rotatably supports a wheel l, and the other end 3b is located on a subframe 5 on the side of the vehicle body 4 and extends in the vehicle width direction. A trailing arm type suspension arm 3 is rotatably mounted around a rotation axis 6. The suspension engine arm 3 is attached to both wheels 1.
1, and a tone con beam 7 is installed between both suspension arms 3.3.

The wheel l is the wheel! A brake mechanism 8 for braking the rotation of is provided, and the brake mechanism 8 includes:
A brake pipe 9 for supplying operating pressure from a master cylinder (not shown) is connected.

In this embodiment, the brake mechanism 8 is configured to swing integrally with the suspension control arm 3.

The brake pipe 9 is made of steel over its entire length, and one end (suspension arm 3 side) is piped along the suspension arm 3, and a mounting bracket 10 is attached to the suspension arm 3. (See Figure 3). In other words, brake pipe 9 suspension j'no - 17- + 7Tl
ll +-) Jb zu 80 ・, :ノ -
・7mer I+) The arrangement structure is such that it can operate integrally with small swings. Reference numeral 11 is a buffer member surrounding the brake pipe 9, and 12 is a mounting bolt.

On the other hand, the brake pipe 9 extends in the vehicle width direction from the suspension arm side attachment part in the vicinity of the rotating shaft 6, which is the pivot point of the suspension arm 3 on the vehicle body side, in the vehicle width direction, and is substantially parallel thereto. It is attached to the floor panel I3 on the vehicle body 4 side at a position away from the arm side attachment part (see FIG. 4). Furthermore, this brake pipe 9 is bent into a U-shape from the floor panel side mounting part, and then
It extends toward the center in the vehicle width direction, and extends from the center in the vehicle width direction toward the front of the vehicle body. That is, the floor panel 1
Mounting bracket 1 to mounting seat I4 fixed to 3.
The U-shaped portion of the brake pipe 9 is attached via the brake pipe 5. Reference numeral 16 is a buffer member surrounding the brake pipe 9, and 17 is a mounting bolt.

That is, the brake pipe 9 is arranged approximately parallel to the rotation axis 6, which is the pivot point of the suspension arm 3 on the vehicle body side, and is attached to the Svennocon arm 3 with one end thereof facing, while the other end The suspension arm 3 is attached to the vehicle body 4 at a position away from the suspension arm side attachment portion in the vehicle width direction, so that the swinging of the suspension arm 3 can be absorbed by its own torsion.

In the drawings, reference numeral I8 indicates a cross member, 19 a reinforcement for reinforcing the subframe 5, 20 a bracket for mounting the suspension arm 3, and 21 a shock absorber.

By adopting the brake pipe arrangement structure as described above, the following effects can be obtained.

When the suspension arm 3 swings around the rotating shaft 6, which is the pivot point on the vehicle body 1 side, during driving, etc., the suspension arm 3 is disposed approximately parallel to the rotating shaft 6, and one end is connected to the suspension arm 3. , a brake pipe 9 whose other end is attached to the vehicle body 4 at a position spaced apart in the vehicle width direction from the suspension arm side attachment portion is connected to the suspension arm 3.
It twists as the suspension arm 3 swings, and the swinging of the suspension arm 3 can be absorbed by this twisting.

In addition, if the entire length of the brake pipe 9 is made of steel pipe as in this embodiment, the following problems may arise when the brake pipe is connected to the wheel side via a flexible joint as in the conventionally known method. It is possible to eliminate the points.

In other words, when the brake pipe is connected via a flexible joint, the flexible joint part expands due to the operating pressure when the brake pedal is depressed, which may worsen the application of operating pressure during the same stroke. If the entire length of the brake pipe 9 is made of steel pipe as in this embodiment, the above-mentioned problems can be solved.

It goes without saying that the present invention is not limited to the embodiments described above, and that the design can be modified as appropriate without departing from the gist of the invention.

(Effects of the Invention) As described above, according to the present invention, the brake pipe that is piped to each wheel is disposed approximately parallel to the rotation axis that is the pivot point on the vehicle body side of the suspension arm, and one end of the brake pipe One end is attached to the suspension arm, while the other end is attached to the vehicle body at a position away from the suspension arm side attachment part in the vehicle width direction, so that the suspension arm rotates as a pivot point on the vehicle body. When swinging about the axis, the brake pipe twists as the suspension arm swings, and the twisting of the brake pipe can absorb the swinging of the suspension arm, contributing to reinforcement of the suspension system. It has an excellent effect of being large.

[Brief explanation of drawings]

FIG. 1 is a bottom view showing the brake pipe arrangement structure of an automobile according to an embodiment of the present invention, and FIG. 2 is a diagram showing ■-■ in FIG. 1.
The sectional views, FIGS. 3 and 4, are taken from III-I in FIG.
II and IV-[V are enlarged cross-sectional views. 1...Wheel 2...Wheel support part 3...Suspension arm 3a...One end 3b...Other end 4...Vehicle body 6... Rotating shaft 8... Brake mechanism 9... Brake pipe Fig. 4

Claims (1)

[Claims] 1. A suspension arm is provided, one end of which is connected to a wheel support portion that rotatably supports a wheel, the other end of which is located on the vehicle body side and rotatably pivoted around a rotation axis extending in the vehicle width direction; In an automobile equipped with a brake pipe that supplies working pressure to a brake mechanism that brakes the rotation of the wheels, the brake pipe that is piped to each wheel is:
The suspension arm is arranged substantially parallel to the rotation axis that is the pivot point on the vehicle body side, and one end thereof is attached to the suspension arm, while the other end is located at a position away from the suspension arm side attachment part in the vehicle width direction. An automobile brake pipe arrangement structure characterized by being attached to the vehicle body side.