KR100931124B1 - Brake piping device - Google Patents

Abstract

The present invention relates to a brake piping device, the fluid sent from the master cylinder 300 is introduced through the two inlet pipes (320, 360) two front wheel outlet pipes (330, 370) and two rear wheel outlet pipes (340, 380, a brake including a brake pressure control valve (PROPORTIONING VALVE) 400 is provided so that the hydraulic pressure sent to the front wheel outlet pipe (330, 370) is greater than the hydraulic pressure sent to the rear wheel outlet pipe (340, 380). In the piping device, the braking pressure control valve 400, two control inlets (651, 652) to which a part of the fluid flows from the inlet pipe (320, 360); A partition member 660 which blocks between the control inlets 651 and 652 and moves according to the hydraulic vehicle flowing into the control inlets 651 and 652; And two control outlets 655 and 656 connected to the rear wheel outlet pipes 340 and 380 according to the movement of the partition member 660. The control housing 600 includes the control housing 600. It relates to a brake piping device.

As described above, according to the present invention, when one side of the connection pipe of the brake system is broken, the braking force acting on the rear wheel brake becomes the same as the braking force acting on the front wheel brake, thereby improving the braking force.

Brake, plumbing, device, control, spill

Description

Brake Piping Apparatus {Brake Piping Apparatus}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake piping device capable of controlling rear wheel braking force when a brake piping break occurs in an X-split type brake piping system.

1 is a schematic diagram showing a conventional brake system, FIG. 2 is a cross-sectional view illustrating a proportioning valve provided in the valve unit of FIG. 1, and FIG. 3 is a partially enlarged view of an enlarged main part of FIG. 1.

The conventional brake system is divided into a parking brake and a general brake as shown in FIG.

The parking brake includes a parking lever 60, a cable equalizer 70 connected to the parking lever 60, and a rear wheel brake unit 20 and 21 connected to the cable equalizer 70.

The general brake includes front wheel brakes 10 and 11 positioned at the front of the vehicle, rear wheel brakes 20 and 21 positioned at the rear of the vehicle, and front wheel brakes 10 and 11 and rear brakes. It is configured to include a valve portion 40 connected to the 20 and 21, and distributes the hydraulic pressure and the master cylinder portion for applying the hydraulic pressure to the valve portion 40.

On the other hand, the hydraulic distribution form of the conventional brake system is divided into H-SPLIT and X-distribution type (X-SPLIT), the H-distribution type is the front wheel right brake portion 10 through the valve portion 40 ) And the front wheel left brake part 11 to provide hydraulic pressure, and separately the rear wheel right brake part 21 and the rear wheel left brake to provide hydraulic pressure, and the X-distribution type uses the valve part 40 in FIG. Provides hydraulic pressure to the current right brake unit and the rear wheel left brake unit 20 connected along the solid line to the center, and separately provides the hydraulic pressure to the front wheel left brake unit 11 and the rear wheel right brake unit 21 connected along the dotted line. Form.

The present invention relates to an X-SPLIT brake system of the hydraulic distribution form.

And the vehicle (ABS: Anti-lock Brake System) is equipped with a braking pressure control valve 40 (PROPORTIONING VALVE) as shown in Figure 2 to the valve portion 40 to adjust the braking force of the rear wheel. .

The braking pressure control valve 40 is a device for adjusting the rear wheel braking pressure to be smaller than the front wheel braking pressure in order to secure vehicle braking stability, the configuration is the same shape on both sides with respect to the center and one of them For example, the first inlet 51 through which the fluid from the master cylinder 30 flows in, the front wheel outlet 52 provided by the fluid introduced into the first inlet 51 to the front wheel, and the rear wheel outlet provided to the rear wheel It comprises 53.

A housing 42 is provided between the inlet 51 and the rear wheel outlet 53, and the housing 42 is provided with a piston 44 and an elastic member 46 positioned around the piston 44.

In addition, the housing 42 has a neck 47 that is narrow in radius adjacent to the rear wheel outlet 53. The neck 47 has a piston head 45 of the piston 44 located therein. The head extension portion 49 having a radius larger than the radius of the neck 47 is provided at the tip of the head 45.

Therefore, when the fluid flows through the inlet 51 in the inflow direction 41, a part of the fluid flows through the front wheel outlet 52 in the front wheel outlet direction 43, and the remaining part flows into the housing 42 and the rear wheels. It flows through the rear wheel outlet 53 in the outflow direction 48.

However, the fluid flowing to the rear wheel outlet 53 generates pressure to operate the brake on the rear wheel and also acts as a pressure for pushing the head extension 49 back, and the head extension 49 is rearward. If it is moved to block the neck 47 is no longer the fluid flow in the direction of the rear wheel outlet (53).

Therefore, since the pressure of the fluid flowing to the front wheel outlet 52 is greater than the pressure of the fluid flowing to the rear wheel outlet 53, a braking force is generated in the front wheel, thereby increasing the braking safety.

3 shows that the hydraulic pressure is distributed through the braking pressure control valve 40 in the conventional master cylinder 30. The fluid sent from the master cylinder 30 is the first inlet pipe 32 and the second inlet pipe ( After entering the braking pressure control valve 40 through 36, the fluid entering the first inlet pipe 32 exits the front left wheel outlet pipe 33 and the right rear wheel outlet pipe 34, and the second inlet pipe ( The fluid entering 36 passes through the front wheel right outlet pipe 37 and the rear wheel left outlet pipe 38.

In the conventional X-SPLIT brake system, when the brake piping is in a normal state, the brake hydraulic pressure distributed to the rear wheels is at least as large as the brake hydraulic pressure distributed to the front wheels. In order to reduce the braking distance as the braking force falls in half of the normal state, it is preferable that the brake oil pressure distributed to the rear wheels be less than the brake oil pressure distributed to the front wheels.

However, in the conventional X-SPLIT brake system, the braking distance is increased because the brake hydraulic pressure distributed to the rear wheel is smaller than the brake hydraulic pressure distributed to the front wheel among the pipes in which one side of the brake piping is not damaged. Problem occurs.

An object of the present invention is to provide a rear wheel braking force control device such that the brake oil pressure distributed to the rear wheels of the pipes on which one side of the brake pipes is not broken is equal to the brake oil pressure distributed to the front wheels.

The brake piping device of the present invention is the fluid sent from the master cylinder 300 is introduced through the two inlet pipes (320, 360) to the two front wheel outlet pipes (330, 370) and two rear wheel outlet pipes (340, 380) The brake piping device includes a braking pressure control valve (400) sent to, but provided so that the hydraulic pressure sent to the front wheel outlet pipe (330, 370) is greater than the hydraulic pressure sent to the rear wheel outlet pipe (340, 380). In

The braking pressure control valve 400,

Two control inlets 651 and 652 through which a part of the fluid flows from the inflow pipes 320 and 360;

A partition member 660 which blocks between the control inlets 651 and 652 and moves according to the hydraulic vehicle flowing into the control inlets 651 and 652; And

Two control outlets 655 and 656 connected to the rear wheel outlet pipes 340 and 380, one of which is opened according to the movement of the partition member 660;

It provides a brake piping device characterized in that the control housing 600 made of.

The first control inlet 651 of the control inlets 651 and 652 is disposed between the first inlet 508 provided in the brake pressure control valve 400 and the first neck 468 of the first housing 418. The first control outlet 655 of the control outlets 655 and 656 may be connected between the first neck 468 and the rear right side outlet 528 provided in the brake pressure control valve 400. .

In addition, two elastic parts 672 and 674 may be provided at both sides of the partition member 660.

On the other hand, the present invention has two control inlets (651, 652);

A partition member 660 which blocks between the control inlets 651 and 652 and moves according to the hydraulic vehicle flowing into the control inlets 651 and 652; And

Two control outlets 655 and 656, one of which is opened according to the movement of the partition member 660;

It also provides a control housing used in the brake piping device comprising a.

As described above, according to the present invention, when one side of the connection pipe of the brake system is broken, the braking force acting on the rear wheel brake becomes the same as the braking force acting on the front wheel brake, thereby improving the braking force.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

FIG. 4 is a schematic view showing a brake system to which a brake piping device according to the present invention is applied, FIG. 5 is a cross-sectional view illustrating a brake pressure regulating valve as part A of FIG. 4, and FIG. 6 shows the control housing of FIG. It is a cross section.

The brake system to which the brake piping device of the present invention is applied includes a master cylinder 300, a first inflow pipe 320 and a second inflow pipe 360 connected to the master cylinder 300, and the first inflow pipe 320. And a braking pressure control valve 400 connected to the second inlet pipe 360 and a control housing 600 provided inside the braking pressure control valve 400.

In addition, the brake pressure control valve 400 including the control housing 600 is connected to the front wheel left outlet pipe 330 and the rear wheel right outlet pipe 340, and the front wheel left outlet pipe 330 and the rear wheel right outlet. The pipe 340 is connected inside the first inlet pipe 320 and the braking pressure control valve 400.

In addition, the brake pressure control valve 400 is connected to the front wheel right outlet pipe 370 and the rear wheel left outlet pipe 380, the front wheel right outlet pipe 370 and the rear wheel left outlet pipe 380 is the first. 2 is connected in the inlet pipe 360 and the braking pressure control valve 400.

Therefore, the fluid sent from the master cylinder 300 flows into the front wheel left outlet pipe 330 and the rear wheel right outlet pipe 340 after entering the brake pressure control valve 400 through the first inlet pipe 320. After the inflow to the brake pressure control valve 400 through the second inflow pipe 360, the front wheel right outlet pipe 370 and the rear wheel left outlet pipe 380 go out.

On the other hand, the braking pressure control valve 400 is a device for adjusting the rear wheel braking pressure to be smaller than the front wheel braking pressure in order to secure vehicle braking stability, the configuration is the same shape on both sides of the center and one side of the master The first inlet 508, through which the fluid from the cylinder 300 flows in through the first inlet duct 320, and the fluid introduced into the first inlet 508, exit the front wheel seat outlet 330. The rear wheel right outlet 518 and the rear wheel right outlet 340 provided to go out are configured to include.

A first housing 418 is provided between the first inlet 508 and the rear wheel right outlet 528, and the first housing 418 is provided around the first piston 438 and the first piston 438. A positioned first elastic member 458 is provided.

In addition, a first neck 468 is formed in the first housing 418 to have a smaller radius adjacent to the rear wheel right outlet 528, and the first neck 468 has a first neck of the first piston 438. A piston head 448 is positioned, and a first head extension 488 having a radius larger than the radius of the first neck 468 is provided at the tip of the first piston head 448.

Accordingly, when the fluid flows through the first inlet 508 in the first inflow direction 408, a part of the fluid flows in the first front wheel outflow direction 428 through the front wheel left outlet 518 and the other part of the first inflow direction 408. After flowing into the housing 418, the gas flows through the rear wheel right outlet 528 in the first rear wheel outlet direction 478.

However, the fluid flowing through the right rear wheel outlet 528 acts as a pressure to push the first head extension 488 backward while generating pressure to operate the brake on the rear wheel, and the first head extension part. When the 488 is moved to the rear to block the first neck 468, the fluid is no longer introduced into the first rear wheel outlet 528.

The other side of the braking pressure control valve 400 includes a second inlet 510 through which the fluid from the master cylinder 300 flows through the second inlet pipe 360, and a fluid introduced into the second inlet 510. Is configured to include a front wheel right side outlet 520 and the rear wheel left side outlet 380 is provided to go out to the front wheel right side outlet 370 and the rear wheel left side outlet 530.

A second housing 420 is provided between the second inlet 510 and the rear wheel left outlet 530, and the second housing 420 is provided around the second piston 440 and the second piston 440. The positioned second elastic member 460 is provided.

In addition, a second neck 470 is formed in the second housing 420 to have a smaller radius adjacent to the rear wheel seat outlet 530, and the second neck 470 has a second neck of the second piston 440. The piston head 450 is positioned, and a second head extension portion 490 having a radius larger than the radius of the second neck 470 is provided at the tip of the second piston head 450.

Therefore, when the fluid flows through the second inlet 510 in the second inflow direction 410, a part of the fluid flows in the second front wheel outflow direction 430 through the front wheel right side outlet 520, and the other part of the second inflow direction 410. After flowing into the housing 420, it flows through the rear wheel left outlet 530 in the second rear wheel outlet direction 480.

However, the fluid flowing into the rear wheel left outlet 530 also acts as a pressure to push the second head extension 490 backward while generating pressure to operate the brake on the rear wheel, and the second head extension part. When the 490 is moved to the rear to block the second neck 470, the fluid no longer flows in the direction of the rear wheel left outlet 530.

Meanwhile, between the first inlet 508 and the first neck 468 of the first housing 418 is connected to the control housing 600 through a first control inlet 651 and the second inlet 510. ) And the second neck 470 of the second housing 420 are connected to the control housing 600 through the second control inlet 652.

The control housing 600 is provided with a partition member 660 in the middle so as to maintain a state in which the fluid introduced into the first control inlet 651 and the fluid introduced into the second control inlet 652 are separated from each other. The first elastic portion 672 is provided on one side of the member 660, and the second elastic portion 674 is provided on the other side of the partition member 660.

The first elastic portion 672 and the second elastic portion 674 serves to control the rapid movement of the partition member 660 and generate a restoring force.

In addition, a plurality of seal members 677 are provided around the partition member 660 such that the partition member 660 moves in close contact with the inside of the control housing 600.

A first control outlet 655 is provided below the first control inlet 651 at the lower end of the control housing 600, and a second control outlet 656 is provided below the second control inlet 652. The first control outlet 655 is provided at the center of the control housing 600 based on the first control inlet 651, and the second control outlet 656 is based on the second control inlet 652. It is provided toward the center of the control housing 600.

If necessary, the positions of the first control inlet 651, the first control outlet 655, the second control inlet 652, and the second control outlet 656 may be changed.

In addition, the first control outlet 655 is connected between the first neck 468 of the first housing 418 and the right rear wheel outlet 528, and the second control outlet 656 is the second housing 420. Is connected between the second neck 470 and the rear wheel left outlet 530.

Referring to the operation of the present invention, the rear wheel braking force control device having a configuration as described above are as follows.

7 is a cross-sectional view showing the control housing when the first inlet pipe is broken, Figure 8 is a cross-sectional view showing the control housing when the second inlet pipe is broken.

In FIG. 4, a first pipe consisting of a first inlet pipe 320, a front wheel left outlet pipe 330, a rear wheel right outlet pipe 340, and a second inlet pipe 360, a front wheel right outlet pipe 370, and In the normal state in which the second pipe including the rear wheel left outlet pipe 380 and the like is not damaged, the amount of fluid flowing through the first housing 418 and the second housing 420 is equal, so that the first control inlet 651 and the first control inlet 651 are the same. The amount of fluid flowing into the control housing 600 through the control inlet 652 is also the same.

Therefore, as shown in FIG. 6, the pressure pushing both sides of the partition member 660 is the same, so that the partition member 660 is positioned at the center of the control housing 600, and the partition member 660 is the first control outlet. 655 and the second control outlet 656 are blocked, there is no fluid flowing to the first control outlet 655 and the second control outlet 656 and the braking pressure regulating valve 400 is the control housing 600. This acts as if it is not provided, and by this action, the braking force applied to the front wheel becomes larger than the braking force added to the rear wheel.

On the other hand, in FIG. 4, when the first pipe formed of the first inlet pipe 320, the front wheel left outlet pipe 330, the rear wheel right outlet pipe 340, and the like is damaged, the fluid flows to the damaged part to allow the first pipe to flow. Will reduce the pressure.

At this time, the pressure of the fluid flowing into the second control inlet 652 as shown in FIG. 7 is greater than the pressure of the fluid flowing into the first control inlet 651 so that the partition member 660 is the first control inlet 651. Direction, the second control outlet 656 is opened while the fluid flows to the rear wheel left outlet 530 through the second control outlet 656 and the hydraulic pressure is applied to the rear wheel left brake through the rear wheel left outlet pipe 380. The hydraulic pressure is applied to the front wheel right brake through the front wheel right outlet pipe 370.

That is, in this case, the second head extension 490 is not affected by blocking the second neck 470.

In FIG. 4, when the second pipe including the second inflow pipe 360, the front wheel right outlet pipe 370, the rear wheel left outlet pipe 380, and the like is damaged, the fluid flows to the damaged portion of the second pipe. The pressure is reduced.

At this time, as shown in FIG. 8, the pressure of the fluid flowing into the first control inlet 651 is greater than the pressure of the fluid flowing into the second control inlet 652, so that the partition member 660 is the second control inlet 652. Direction, the first control outlet 655 is opened while the fluid flows to the rear right outlet outlet 528 through the first control outlet 655, and hydraulic pressure is applied to the rear right brake via the rear right outlet pipe 340. The hydraulic pressure is applied to the front wheel left brake through the front wheel left outlet pipe 330.

That is, even in this case, the first head extension 488 is not affected by the blocking of the first neck 468.

As described above, according to the present invention, when one side of the connection pipe of the brake system is broken, the braking force acting on the rear wheel brake becomes the same as the braking force acting on the front wheel brake, thereby improving the braking force.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1 is a simplified diagram showing a conventional brake system.

FIG. 2 is a cross-sectional view illustrating a proportioning valve provided in the valve unit of FIG. 1. FIG.

3 is an enlarged view of a part of an enlarged main part of FIG. 1;

Figure 4 is a simplified diagram showing a brake system to which the present inventors brake piping device is applied.

FIG. 5 is a cross-sectional view illustrating a brake pressure regulating valve as part A of FIG. 4.

6 is a cross-sectional view of the control housing of FIG. 4 when in a steady state.

Fig. 7 is a sectional view showing the control housing when the first inlet pipe is broken.

Fig. 8 is a sectional view showing the control housing when the second inlet pipe is broken.

<Description of the symbols for the main parts of the drawings>

300: master cylinder 320: first inlet pipe

330: front wheel left outflow pipe 340: rear wheel right outflow pipe

360: second inlet pipe 370: front wheel right outlet pipe

380: rear wheel left side outflow pipe 400: braking pressure control valve

600: control housing 651: first control inlet

652: second control inlet 660: partition member

672: first elastic portion 674: second elastic portion

Claims (5)

delete delete Fluid sent from the master cylinder 300 is introduced through the two inlet pipes (320, 360) and sent to the two front wheel outlet pipes (330, 370) and two rear wheel outlet pipes (340, 380), the front wheel outflow In the brake piping device including a braking pressure control valve (PROPORTIONING VALVE) 400 is provided so that the hydraulic pressure sent to the pipe (330, 370) is greater than the hydraulic pressure sent to the rear wheel outlet pipe (340, 380), The braking pressure control valve 400, Two control inlets 651 and 652 through which a part of the fluid flows from the inflow pipes 320 and 360; A partition member 660 which blocks between the control inlets 651 and 652 and moves according to the hydraulic vehicle flowing into the control inlets 651 and 652; And Two control outlets 655 and 656 connected to the rear wheel outlet pipes 340 and 380, one of which is opened according to the movement of the partition member 660; The control housing 600 is provided, The first control inlet 651 of the control inlets 651 and 652 is connected between the first inlet 508 provided in the brake pressure control valve 400 and the first neck 468 of the first housing 418. , The first control outlet 655 of the control outlet (655, 656) is the brake which is connected between the first neck 468 and the right rear wheel outlet (528) provided in the braking pressure control valve 400 Control housing used for plumbing devices. The method according to claim 3, Brake piping device, characterized in that the two elastic portion (672, 674) is provided on both sides of the partition member (660). delete

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