JP3153255B2 - Anti-skid brake control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-skid brake control device for controlling the skid of a wheel during braking, and more particularly, to at least an anti-skid control modulator formed by integrating anti-skid control components into a unit. Related to an anti-skid brake control device.

[0002]

2. Description of the Related Art Generally, anti-skid brake control is
When it is detected that a wheel has become skid during braking, the braking force of that wheel is weakened to eliminate the skid condition, and then the braking force is increased again to stabilize the operation of the vehicle and reduce the braking distance. The brake control is performed so as to be as short as possible.

[0003]

As an example of an anti-skid brake control device for performing such a brake control, for example, an anti-skid brake control device as shown in FIG. 4 can be considered. As shown in FIG. 4, the brake circuit to which the anti-skid brake control device is applied is formed in two systems including a first brake system A and a second brake system B. Since the first and second brake systems A and B have the same configuration, the first brake system A will be described below and the second brake system B
Is omitted.

The first brake system A includes one oil chamber 1a and a right front wheel F of a tandem master cylinder 1 with a negative pressure booster.
The brake fluid supply passage 3 between the R front wheel cylinder 2 and the brake fluid supply passage 5 between one oil chamber 1a of the master cylinder 1 and the rear wheel cylinder 4 of the left rear wheel RL are respectively supplied. First and second flow control valves 6 and 7 are provided, which are mechanical valves for selectively communicating or blocking the passages 3 and 5, and are provided downstream of the first and second flow control valves 6 and 7. ,
Oil chamber 1 of each wheel cylinder 2 and 4 and master cylinder 1
a or a low-pressure accumulator (sump) 10 for maintaining a pressure of, for example, about 2 to 3 atm via the orifices 8 and 9. First and second flow path switching valves 11 and 12 formed of valves are provided.

[0005] In the anti-skid brake control device configured as described above, each of the valves 6,7,
Numerals 11 and 12 are shown in the drawing, and the oil chamber 1a is in communication with the front and rear wheel cylinders 2 and 4. Therefore, the brake fluid pressure generated in the oil chamber 1a of the master cylinder 1 at the time of braking is introduced into the front and rear wheel cylinders 2 and 4 via the supply passages 3 and 5, and the brake of the right front wheel FR and the left rear wheel RL is applied. Each works.

For example, when it is detected that the right front wheel FR is in the skid state, the solenoid of the first flow path switching valve 11 is excited by the detection signal, so that the position of the first flow path switching valve 11 is changed. Switching is performed to shut off the supply passage 3 that connects the oil chamber 1a and the front wheel cylinder 2, and to switch the flow path of the brake fluid so that the front wheel cylinder 2 communicates with the low-pressure accumulator 10. For this reason, the brake fluid in the front wheel cylinder 2 flows out to the low-pressure accumulator 10, so that the brake fluid pressure in the front wheel cylinder 2 decreases.

The brake fluid flowing out of the low-pressure accumulator 10 is returned to the oil chamber 1a of the master cylinder 1 by a piston pump 13 through check valves 14, 15 and an orifice 16 for preventing kickback. As a result, the pressure in the oil chamber 1a increases, and the brake pedal is slightly pushed back, so that the driver senses that the anti-skid control is being performed. In this case, the pulsation of the pump 13 is absorbed by the volume chamber 17 and the pulsation is suppressed by the kickback preventing orifice 16 and is hardly transmitted to the oil chamber 1a. That is, there is almost no kickback.

The brake fluid recirculated by the pump 13 is supplied to each port 6 of the first and second flow control valves 6 and 7.
a and 7a act as pilot pressures. Since the brake fluid pressure of the front wheel cylinder 2 has decreased, the pilot pressure causes the first flow control valve 6 to
However, since the brake fluid pressure of the rear wheel cylinder 4 has not dropped, the pilot pressure
The flow regulating valve 7 does not block the supply passage 5.

When the skid state of the front wheel cylinder 2 is eliminated, the first flow path switching valve 11 is switched to the original position, that is, the position where the front wheel cylinder 2 and the oil chamber 1a communicate with each other. Therefore, the brake fluid recirculated by the pump 13 is supplied to the front wheel cylinder 2 while the flow rate is restricted by the orifice 18. Therefore, the brake fluid pressure of the front wheel cylinder 2 increases again, and the braking force gradually increases. Left rear wheel RL and left front wheel F of second system B
When the L and the right rear wheel RR are in the skid state, the same anti-skid control as described above is performed.

By the way, in such an anti-skid brake control device, the flow regulating valves 6 and 7, the flow path switching valves 11 and 12, the low pressure accumulator (sump device) 1
The components for anti-skid brake control, such as the pump 0, the pump 13 and the volume chamber 17, are usually integrated into one unit as an anti-skid brake control modulator M as shown by a two-dot chain line in FIG. I have. When such a modulator M is mounted on a vehicle body, it is conceivable to provide a mounting mount 19 on the main body of the modulator M as shown in FIG.

However, when the mounting mount 19 is provided on the main body of the modulator M, a space for fixing the mounting mount 19 is specially required for the main body, and a predetermined strength is secured in the mounting mount 19 fixing portion of the main body. There is a need to. For this reason, there is a problem that not only the modulator M cannot be reduced in size, but also the body of the modulator M cannot be lightened very much. In addition to these problems, there is a problem that the cost of the coarse material of the modulator M cannot be reduced so much.

The present invention has been made in view of such a problem, and an object of the present invention is to provide an anti-skid brake control device capable of further reducing the size of a modulator and enabling a lightening of a main body of the modulator. It is to provide.

[0013]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to an anti-skid control modulator formed by integrating anti-skid control parts into a unit, at least a mounting screw and an elastic member. And
An anti-skid brake control device comprising at least a mount member for attaching the modulator to a vehicle body, wherein a concave portion is provided in a component of the anti-skid control component, and at least a part of an elastic member of the mount member is fitted in the concave portion. It is characterized by being fixed together.

Further, in the invention according to claim 2, the anti-skid control component is a volume chamber for absorbing a pulsation of an anti-skid control pump provided in the modulator, and the constituent member is this volume chamber. Is characterized by being a lid that constitutes a part of. Furthermore, the invention according to claim 3 is that the anti-skid control component is a low-pressure accumulator that discharges brake fluid from a wheel cylinder at the time of pressure reduction in anti-skid control, and the constituent member forms a part of the low-pressure accumulator. It is characterized by being.

[0015]

In the anti-skid brake control device according to the first to third aspects of the present invention, at least a part of the mount member is fitted and fixed in the concave portion provided in the component of the anti-skid control component. The mounting member can be provided in the installation space of the component. Therefore, a special space for providing the mount member on the modulator is reduced, and the modulator can be downsized accordingly. In addition, since the mount member is provided on the component member of the anti-skid control component, the mount member mounting portion conventionally provided on the main body of the modulator is eliminated, and the strength of this portion does not need to be excessively increased. Therefore, the lightening of this portion of the modulator main body becomes possible, and accordingly, the modulator can be further reduced in size and weight.

Further, since the mount member is fitted and fixed in the concave portion provided in the anti-skid control component, the number of components can be reduced.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view similar to FIG. 5, partially cut away and partially showing a modulator M used in an embodiment of an anti-skid unit control device according to the present invention. The same components as those of the modulator M are denoted by the same reference numerals, and the detailed description thereof will be omitted. The anti-skid brake control circuit described above is also used in the present embodiment in the same manner. Is omitted. FIG.
As shown in (1), the volume chamber 17 provided in the main body of the modulator M and serving as an anti-skid control part is closed by screwing a lid 17a constituting a part of the volume chamber 17 to the main body. A mounting member 19 is integrally attached to the lid 17a. The mount member 19 includes an elastic member 19a such as rubber, at least a part of which is fitted and fixed in a concave portion provided in the lid 17a, and a mounting bolt 19b fixed to the elastic member 19a. ing.

In the modulator M of this embodiment having such a configuration, the mount member 19 is provided at a place where the lid 17a constituting a part of the volume chamber 17, which is an anti-skid control part, is provided. Therefore, a special space for providing the mount member 19 on the modulator M is reduced. Therefore, the modulator M can be downsized accordingly.

By providing the mount member 19 on the lid 17a, for example, the strength of the portion A of the modulator M to which the mount member 19 is fixed as shown in FIG. As a result, the portion A of the main body of the modulator M can be lightened, and the modulator M can be further reduced in size and weight. Further, since the mount member 19 is fitted and fixed in a concave portion provided in the lid 17a of the volume chamber 17 which is an anti-skid control component, the number of components can be reduced.

FIG. 2 is a view similar to FIG. 1, showing another embodiment of the present invention. As shown in FIG. 2, a mount member 19 is provided at a place where a cover 10a provided on the main body of the modulator M and constituting a part of the low-pressure accumulator 10 as an anti-skid control component is provided.
This mounting member 19 is also similar to the one shown in FIG.
The elastic member 19a is made of rubber or the like that is at least partially fitted and fixed in the concave portion 0a, and mounting bolts 19b fixed to the elastic member 19a. The modulator M of this embodiment also has the same operation and effect as those of the above-described embodiment.

FIG. 3 is a diagram showing still another embodiment of the present invention. In the above-described embodiment shown in FIG. 2, the lid member 10a is attached by screwing to the main body of the modulator M. However, as shown in FIG. 3, in this embodiment, the flange 10b of the lid 10a is connected to the plate 20. And the modulator M main body, so that the modulator M main body is attached to the lid 10a. Other configurations are the same as those of the embodiment shown in FIG.
The modulator M of this embodiment also has the same operation and effect as those of the above-described embodiment.

The present invention is not limited to the above-described embodiment, and various design changes are possible. For example, the pressure absorbing member of the low-pressure accumulator 10 (see FIGS. 2 and 3)
In the example shown in FIG.
a can also be used, and in this case, the number of parts can be reduced.

[0023]

As is apparent from the above description, according to the anti-skid brake control device of the present invention, at least a part of the mount member is fitted and fixed in the recess provided in the component of the anti-skid control component. Therefore, a mounting member can be provided in the installation space of the constituent member. Therefore, a special space for providing the mount member on the modulator can be reduced, and the modulator can be downsized accordingly. Further, since the mount member is provided on the component member of the anti-skid control component, the mount member mounting portion conventionally provided on the main body of the modulator is eliminated, so that the strength of this portion does not need to be excessively increased. Therefore,
This portion of the modulator can be lightened, and the modulator can be further reduced in size and weight. Further, since the material is saved by the lightening, the material cost can be reduced.

Further, the number of components can be reduced by fitting and fixing the mount member to the concave portion provided in the anti-skid control component.

[Brief description of the drawings]

FIG. 1 is a partially cutaway view showing a modulator used in an embodiment of an anti-skid brake control device according to the present invention.

FIG. 2 is a view similar to FIG. 1 showing another embodiment of the present invention.

FIG. 3 is a view similar to FIG. 1, showing still another embodiment of the present invention.

FIG. 4 is a brake control circuit diagram of an anti-skid brake control device that can be considered as an example.

FIG. 5 is a diagram showing an example of a conventional mounting mount for a modulator.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Tandem master cylinder, 2 ... Front wheel cylinder, 3, 5 ... Brake fluid supply path, 6, 7 ... First and second hydraulic pressure adjustment valves, 10 ... Low pressure accumulator (sump device), 10a ... Lid, 11, 12: first and second flow path switching valves, 13: piston pump, 16: orifice for preventing kickback, 17: volume chamber, 17a: lid,
18 orifice, 19 mounting member, 19a elastic member, 19b mounting bolt, M modulator, A lightening portion

Claims (3)

(57) [Claims] 1. An anti-skid control component is mounted on a unit.
Stopped anti-skid control modulator
When,At least a mounting screw and an elastic member,
And a mounting member for attaching theAt least
Also equipped with anti-skid brake control device
hand,  Components of the anti-skid control partProvide recesses in
At the same time, the amount of the elastic member of the mount member is reduced in the concave portion.
At least a part is fixedly fittedCharacterized by Ann
Chiskid brake control device. Wherein said anti-skid control part, the motor <br/> Ri volume chamber der for absorbing pulsation of the anti-skid control pump provided in Jureta, the constituent members of the volume chamber 2. The anti-skid brake control device according to claim 1, wherein the anti-skid brake control device is a lid constituting a part . It wherein the anti-skid control components, Ri Ah at low pressure accumulator brake fluid from the wheel cylinder during decompression in anti-skid control is discharged, the component is a cover forming a part of the low-pressure accumulator The anti-skid brake control device according to claim 1 or 2, wherein: