JPH0549549U - Braking passage mounting structure for vehicle braking system - Google Patents

Abstract

(57) [Summary] [Objective] To provide a braking passage mounting structure for a vehicle braking device capable of improving workability in mounting distribution valves, brake pipes and the like. [Structure] A pair of left and right trailing arms 1, 1 boss portions 1a, 1b are swingably supported by a body frame 7,
A braking passage mounting structure of a braking device in a vehicle having a trailing arm type suspension device in which wheels 2 are supported by an axle portion 1c of each trailing arm 1 is configured. In this case, the inner boss portions 1b of the left and right trailing arms 1 and 1 are fixed to the lower surface of the shared bracket 10 attached to the vehicle body frame 7 so as to be located substantially in the center in the vehicle width direction.
Then, the braking pipes 14 connected to the left and right wheel brake mechanisms 3 are fixed to the left and right trailing arms 1, and the braking oil distribution valve 11 is attached to the lower surface of the common bracket 10. Further, the valve 11 and the braking pipe 14 from the left and right wheel brake mechanisms 3 are connected via a flexible hose 13.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a control passage mounting structure for a braking device in a vehicle equipped with a trailing arm type suspension device, and particularly to the above-mentioned valves, pipes, etc., which can improve the mounting workability of a braking fluid distribution valve, a brake pipe, etc. This is related to the improvement of mounting method and wiring method.

[0002]

[Prior Art]

 In a vehicle equipped with a trailing arm suspension system, the following structure is generally used as a structure for attaching a brake passage for distributing brake fluid to a brake mechanism (caliper) of a wheel. A braking fluid distribution valve is attached to the vehicle body frame, and a brake pipe from a hydraulic pressure generation source (master cylinder) is connected to the primary side of the valve, and a pair of brake pipes from the secondary side of the valve are trailed. It is fixed via a bracket to the frame part near the boss part of the arm. Also, in the sub-assembly process of the suspension device, the tip of the wheel side portion of the brake pipe is connected to the braking mechanism, the rear end is fixed to the trailing arm via the bracket, and the flexible hose is connected to the rear end. I'll do it. After assembling the suspension device to the vehicle body, the secondary side brake pipe on the side of the vehicle body frame and the flexible hose on the suspension device side are connected (for example, Japanese Utility Model Publication No. 61-17367 and Japanese Utility Model Publication No. 59-124762). (See the official gazette).

[0003]

[Problems to be solved by the device]

 In the case of the above conventional structure, the work of mounting the braking fluid distribution valve, connecting the secondary side brake pipe and the flexible hose, etc. is performed from the lower side of the vehicle upwards, and the workability is poor. is there.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a braking passage mounting structure for a vehicle braking device that can improve workability in mounting distribution valves, brake pipes, and the like. There is.

[0005]

[Means for Solving the Problems]

 The present invention relates to a vehicle equipped with a trailing arm type suspension device in which the bosses of a pair of left and right trailing arms are swingably supported by the vehicle body, and the wheels are supported by the axles of the respective trailing arms. In the structure for mounting the braking passage of the braking device, the inner boss portions of the left and right trailing arms are fixed to a common bracket mounted on the vehicle body frame so as to be located approximately in the center in the vehicle width direction. The braking pipe connected to the braking mechanism is fixed to the left and right trailing arms, the braking fluid distribution valve is attached to the shared bracket, and the valve and the braking pipe from the left and right wheel braking mechanism are attached. It is characterized by connecting and via a flexible hose.

[0006]

[Action]

 According to the braking passage mounting structure of the braking device according to the present invention, in the sub-assembly process of the suspension device, the distribution valve is mounted on the common bracket to which the inner boss portions of the left and right trailing arms are fixed, and each wheel is mounted. One end of the braking pipe is connected to the braking mechanism, and the other end is fixed on the trailing arm, and the braking pipe and the secondary side of the distribution valve are connected via a flexible hose. After mounting this suspension device on the vehicle frame, the brake pipe from the hydraulic pressure source is connected to the primary side of the distribution valve. As described above, in the present invention, the braking passage after the distribution valve can be attached to the suspension device in advance, so that the number of man-hours for upward work can be reduced as compared with the conventional structure, and the workability can be improved accordingly.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view for explaining a brake passage mounting structure of a vehicle brake device according to an embodiment of the present invention.

In the figure, reference numerals 1 and 1 denote a pair of left and right trailing arms that constitute a rear wheel suspension system. Each trailing arm 1 has a pair of left and right outer and inner boring arms at its front portion. It has a structure in which the rib portions 1a and 1b are formed in a bifurcated shape and located on the swing axis A, and the axle portion 1c is formed in the rear portion. Rear wheels 2 are axially supported by the axle 1c, and a braking mechanism 3 is attached to each of the rear wheels 2. The braking mechanism 3 is configured so that a caliper 5 holds a disk plate 4 that rotates together with the rear wheel 2. In the caliper 5, a pair of pistons are arranged in a cylinder so as to face each other, and a brake fluid pressure is applied to each piston, so that the disc plate 4 is sandwiched between pads attached to the tip of each piston. Is configured.

The outer boss portion 1 a of the trailing arm 1 is supported by a vehicle body frame 7 via a cantilevered outer rubber bush 6. The rubber bush 6 is formed by inserting and fixing a rubber material 6c between a support rod 6a fixed to the boss portion 1a and an outer pipe 6b, and a bracket 6d formed on the outer pipe 6b is mounted on a vehicle. The lower surface of the body frame 7 is fixed by bolting.

The inner boss portion 1 b of the trailing arm 1 is supported by the vehicle body frame 7 via a double-supported inner rubber bush 8. The rubber bush 8 has a structure in which a rubber material 8c is inserted and fixed between an outer pipe 8a and an inner pipe 8b fixed to the boss portion 1b. The rubber bush 8 is fixed to the leg portion 10b of the common bracket 10 by screwing a nut 9b onto a bolt 9a inserted into the inner pipe 8b.

The common bracket 10 is formed by welding a pair of left and right U-shaped support brackets 10b to the lower surface of a flat plate-shaped main body 10a, and bolting and fixing to the lower surface of the vehicle body frame 7. There is. A distribution valve 11 is attached to the center of the lower surface of the main body portion 10a in the vehicle width direction. The distribution valve 11 is for distributing and supplying the hydraulic pressure generated in the master cylinder to the braking mechanism 3 for the left and right rear wheels 2, 2 and has a primary side brake extending from the master cylinder on its primary side. The pipe 12 is connected. Further, one end 13a of the flexible hose 13 is connected to the secondary side of the distribution valve 11, and the other end 13b of the hose 13 is connected to one end 14a of the secondary side brake pipe 14. One end 14a of the secondary side brake pipe 14 is fixed to the upper surface of the trailing arm 1 by a bracket 15, and the other end 14b is connected to the cylinder of the caliper 5 described above.

Next, the function and effect of this embodiment will be described. In the braking device having the structure of the present embodiment, the portion after the distribution valve 11 is attached to the device in advance in the sub-assembly process of the rear wheel suspension device. That is, the distribution valve 11 is attached to the lower surface of the common bracket 10 to which the inner boss portions 1b of the left and right trailing arms 1 are bolted and fixed, and the other end 14b of the secondary side brake pipe 14 is attached to the caliper 14b. At the same time as connecting, one end 14b is fixed on the trailing arm 1, and the secondary side brake pipe 14 and the secondary side of the distribution valve 11 are connected by a flexible hose 13.

The rear wheel suspension device to which the braking device portion is attached is fixed to the vehicle body frame 7 by bolting the common bracket 10 and the bracket 6d, and a cushion unit (not shown) is also bolted and fixed to the vehicle body. Attach to. Furthermore, the tip of the primary side brake pipe 12 is connected to the primary side of the distribution valve 11.

As described above, in this embodiment, since the portion after the distribution valve 11 of the braking device is attached to the rear wheel suspension device in the sub-assembly process of the rear wheel suspension device, it is possible to reduce the number of man-hours for upward work and improve workability accordingly. .. Further, in this embodiment, since the structure in which the flexible hose 13 is directly connected to the distribution valve 11 is adopted, the number of parts can be reduced as compared with the above-mentioned conventional structure.

Further, in this embodiment, since the outer and inner boss portions 1a and 1b of the trailing arm 1 are bolted and fixed to the lower surface of the vehicle body frame 7 via the brackets 6d and 10, the suspension device is used. This is advantageous when dealing with automation of the vehicle body assembly work.

Although the trailing arm and the distribution valve are mounted on the lower surface of the common bracket in the above embodiment, they may be mounted on the upper surface of the bracket.

[0017]

[Effect of the device]

 As described above, according to the braking passage mounting structure of the vehicle braking device of the present invention, the distribution valve is mounted on the shared bracket to which the inner boss portion of the trailing arm is mounted, and the braking pipe from the valve and the braking mechanism is mounted. Since the and are connected via a flexible hose, the parts after the distribution valve can be installed in the suspension device in advance in the sub-assembly process of the suspension device, which can reduce the number of upward work steps and improve workability. is there.

[Brief description of drawings]

FIG. 1 is a plan view showing a brake passage mounting structure of a vehicle brake device according to an embodiment of the present invention.

[Explanation of symbols]

 1 Trailing Arm 1b Inner Boss 1c Axle 2 Wheel 3 Braking Mechanism 7 Body Frame 10 Shared Bracket 11 Distribution Valve 13 Flexible Hose 14 Braking Pipe

Claims (1)

[Scope of utility model registration request] 1. A vehicle equipped with a trailing arm type suspension device in which boss portions of a pair of left and right trailing arms are swingably supported by a vehicle body, and wheels are supported by an axle portion of each trailing arm. In the braking passage mounting structure of the braking device, the inner boss portions of the left and right trailing arms are fixed to a common bracket mounted on the vehicle body frame so as to be located substantially in the center in the vehicle width direction. The braking pipe connected to the braking mechanism is fixed to the left and right trailing arms, the braking fluid distribution valve is attached to the shared bracket, and the valve and the braking pipe from the left and right wheel braking mechanism are flexible. A braking passage mounting structure for a vehicle braking device, characterized by being connected via a hose.