JPH0534469Y2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention (1) Industrial application field The present invention is a brake system comprising a solenoid valve for anti-lock control attached to a support and a reservoir into which oil from the solenoid valve can be introduced. It relates to a hydraulic control device.

(2) Conventional technology Conventionally, in such a brake hydraulic control device, a single reservoir is mounted on the upper part of a support body at a higher position than the solenoid valve. By eliminating air pockets between the solenoid valve and the inner bottom of the reservoir, air intrusion into the oil returned from the solenoid valve to the reservoir is suppressed, and since the solenoid valve is always immersed in oil, it is possible to This has the advantage that there is no risk of air entering the brake hydraulic control device via the brake hydraulic control device.

(3) Problems to be solved by the invention However, in the conventional device described above, the entire reservoir is attached to the support in a manner that projects high above the support, so the overall height of the device is relatively high. This is inconvenient, for example, when it is desired to lower the overall height for installation in a vehicle.

The present invention was developed in view of the above circumstances, and it is possible to reduce the overall height of the reservoir while securing the required capacity of the reservoir without impairing the above-mentioned advantages of the conventional device. An object of the present invention is to provide a braking hydraulic control device that can perform the following functions.

B. Structure of the invention (1) Means for solving the problem In order to achieve the above object, the present invention includes a solenoid valve for anti-lock control that is attached to a support, and a reservoir into which oil from the solenoid valve can be introduced. The braking hydraulic control device includes a first oil storage section that is flat in the vertical direction and is attached to the upper part of the support body so as to be located at a higher position than the electromagnetic valve; A second oil storage part disposed on the side or below the solenoid valve constitutes a reservoir, and an inlet for returning oil from the solenoid valve to the reservoir is set in the reservoir. Provided below the lowest oil level, and further at the lower end of the second oil storage section,
The present invention is characterized in that an outlet is provided for extracting oil from the reservoir.

(2) Effect According to the above configuration, the reservoir is connected to the upper and lower first
and a second oil storage part, the first oil storage part on the upper side is formed flat in the vertical direction, and the second oil storage part on the lower side has an outlet for leading out the oil from the reservoir. Because of this, the overall height of the reservoir can be lowered compared to a conventional device in which the entire reservoir is disposed on a support while ensuring the required capacity of the reservoir.

In addition, the first oil storage section is mounted on the upper part of the support body so as to be higher than the solenoid valve, and the inlet for returning oil from the solenoid valve to the reservoir is higher than the lowest oil level set for the reservoir. Since a portion of the reservoir (i.e., most of the second oil storage section) is disposed on the side or below the solenoid valve, there is no possibility of oil being returned from the solenoid valve into the reservoir. Air intrusion is suppressed, and the solenoid valve can be immersed in oil at all times, which is effective in preventing air from entering the brake hydraulic control device from the valve.

(3) Embodiment Hereinafter, an embodiment of the present invention will be explained with reference to the drawings. First, in FIGS. 1 and 2 showing an embodiment of the present invention, the modulator block 1 as a support body is connected to the upper block 1a. and a lower block 1b are connected to each other, and within this modulator block 1, a controller is interposed between a master cylinder (not shown) and a brake device to adjust the braking hydraulic pressure from the master cylinder and supply it to the brake device. For example, a modulator mechanism is built in corresponding to the left front wheel brake device, the right front wheel brake device, and both rear wheel brake devices. , solenoid valves 2a individually corresponding to the right front wheel brake device and both rear wheel brake devices,
2b and 2c are attached. Moreover, each solenoid valve 2a
Modulator block 1 so as to cover ~2c
A cover 3 is attached to the.

Each of the electromagnetic valves 2a, 2b, and 2c functions to reduce pressure in the corresponding modulator mechanism during antilock control. During antilock control, hydraulic pressure from a hydraulic source (not shown) is transferred to a control hydraulic chamber (not shown) of the modulator mechanism. During non-antilock control, it functions to cut off the oil pressure supply from the oil pressure source to the control oil pressure chamber and to return the oil pressure in the control oil pressure chamber to the reservoir 4.

The reservoir 4 communicates with a vertically flat first oil storage part 5 that is attached to the upper part of the modulator block 1 so as to be located at a higher position than the electromagnetic valves 2a, 2b, and 2c, and a lower part of the first oil storage part 5. A second oil storage section 6 is provided integrally with the upper block 1a of the modulator block 1.

The first oil storage section 5 includes a reservoir body 7 basically made of synthetic resin, a lid 9 that closes the upper end opening 8 of the reservoir body 7, and an oil filter 10 housed in the reservoir body 7. .

The reservoir body 7 includes a lower body 7a basically formed in a rectangular short cylinder shape with a bottom, and an upper body 7b basically formed in a rectangular short cylinder shape corresponding to the lower body 7a. are connected to each other, and the lower body 7a is connected to the upper end surface of the modulator block 1 by a screw member 11. In addition, the reservoir body 7 is formed so that a portion of the reservoir body 7 protrudes to the side of the modulator block 1 while being connected to the upper part of the modulator block 1. Further, an opening 8 that can be closed with a lid 9 is provided in a portion of the upper body 7b that extends from the modulator block 1.

A metal mounting plate 12 is integrally provided in a part of the lower body 7a, and the screw member 11 connects the mounting plate 12 to the upper end of the modulator block 1 directly below the opening 8 and at other positions. It is arranged so that

Referring also to FIG. 3, the oil filter 10
The filter portion 14 is provided at a plurality of positions on the support frame 13. The support frame 13 includes first and second outer plate portions 15 and 16 each having an arcuate cross section, and a pair of parallel outer plate portions 15 and 16 that connect the circumferential ends of each of the outer plate portions 15 and 16 while facing each other. Plate portion 17a, 1
An inner plate part 17 whose upper end 7b is connected by a connecting plate part 17c, a first outer plate part 15, and an inner plate part 17.
and first and second bottom plate parts 18 that connect the lower ends of the second outer plate part 16 and the inner plate part 17, respectively;
19, and a ring-shaped upper edge 20 that continues to the upper edges of both ends of the connecting plate portion 17c and the upper ends of both outer plate portions 15, 16, and is integrally formed of synthetic resin. This support frame 13 has both outer plate parts 15 and 16 and an inner plate part 17 working together, and has a screw member 1 for coupling the reservoir body 7 to the modulator block 1.
1, the cross-sectional shape forms a closed cross section on both sides of the joint.

In addition, locking protrusions 21 are respectively provided at intermediate portions in the vertical direction at both ends in the circumferential direction of both outer plate portions 15 and 16. The upper edge 20 is tapered so that the diameter increases upwardly so that the upper end comes into contact with the inner surface of the opening 8 in the reservoir body 7. A plurality of cutouts 22, for example, a pair of cutouts 22, are provided to form a passage for allowing air to flow between the cutouts and the inner surface of the cover.

Two filter portions 14 are provided on both outer plate portions 15 and 16 and on both parallel plate portions 17a and 17b of inner plate portion 17, respectively.

The upper block 1a of the modulator block 1 has a mounting protrusion 23 projecting thereon for attaching the reservoir body 7 with the screw member 11, and the bottom of the lower body 7a of the reservoir body 7 has the mounting protrusion 23 A recess 24 is formed surrounding the. The oil filter 10 is arranged so that the lower part of the support frame 13 fits into the recess 24, and the upper edge 20 is pushed downward by the lid 9 with the locking protrusion 21 engaged with the upper peripheral edge of the recess 24. By pressing, it is housed and fixed within the reservoir body 7.

Moreover, the second oil storage part 6 is integrally connected to the upper block 1a on the side of the solenoid valve 2a so that the upper part is open, and the reservoir main body 7 is placed in the upper part of the second oil storage part 6. Some are fitted. Further, a communication hole 25 is bored in the bottom of the lower body portion 7a of the reservoir body 7 to communicate between the inside of the reservoir 7 and the second oil storage portion 6.

At the bottom of the reservoir body 7, a nozzle 27 is provided that projects upward and communicates with an oil passage 26 bored in the upper block 1a of the modulator block 1. It penetrates through the second bottom plate part 19 and enters into the oil filter 10. Moreover, the oil passage 26 communicates with the outlet of each electromagnetic valve 2a to 2c.

An introduction port 28 that opens laterally is provided at the tip of the nozzle 27, and the vertical level of the introduction port 28 is set below the lowest oil level set in the reservoir 4. By setting the height of the inlet 28 in this way, most of the second oil storage section 6 is located below the inlet 28, and moreover, the return oil from the solenoid valves 2a, 2b, and 2c is The oil is directly returned to the oil stored in the reservoir 4 through the inlet 28 without passing through an air reservoir.

Furthermore, a reservoir 4 is provided at the lower end of the second oil storage section 6.
A discharge port 29 is provided to discharge the oil contained therein.

Next, the operation of this embodiment will be explained. By providing the filter portions 14 on both outer plate portions 15 and 16 of the support frame 13 of the oil filter 10 and on both parallel plate portions 17a and 17b of the inner plate portion 17, It becomes possible to make the area occupied by the filter section 14 relatively large. Therefore, when the lid 9 is opened and oil is injected into the oil filter 10 from the opening 8, the filtration flow rate of the filter section 14 cannot keep up with the oil injection flow rate, and the oil overflows from the opening 8. It is possible to prevent the situation from occurring.

Furthermore, although the reservoir body 7 is attached to the modulator block 1 by the screw member 11 at approximately the center of the oil filter 10, it is not necessary to set the minimum oil level above the head of the screw member 11. Even if the minimum oil level is set above the inlet 28 of the nozzle 27, it is possible to bring the minimum oil level as close as possible to the modulator block 1 side, which contributes to reducing the height of the reservoir 4.

Moreover, the reservoir 4 is divided into a first oil storage section 5 and a second oil storage section 6, and the first oil storage section above the first oil storage section 5 and the second oil storage section 6 are configured separately.
Since the oil storage portion 5 is formed flat in the vertical direction, it is possible to minimize the amount of upward protrusion from the upper end of the modulator block 1, that is, the height of the first oil storage portion 5, thereby reducing the overall height. can be made smaller.

FIG. 4 shows another embodiment of the present invention, and parts corresponding to those in the above embodiment are given the same reference numerals.

The reservoir 4' consists of a first oil storage part 5' connected to the upper part of the modulator block 1, and a separate second oil storage part 6' arranged below the first oil storage part 5'. . The first oil storage part 5' includes a reservoir body 7' coupled to the upper part of the modulator block 1.
An oil filter 10' which can be fixed with a lid 8' is housed therein, and an oil passage 30 communicating with the inside of the reservoir body 7' is bored in the upper part of the modulator block 1. Moreover, the oil passage 30 includes a pipe line 31 such as a hose.
A pipe line 31 is connected at one end to a second oil storage part 6' in which an oil filter 35 is housed in a container 32.
The other end of is connected. Moreover, a discharge port 29' for discharging oil from the reservoir 4' is provided at the lower end of the second oil storage portion 6', and a pump 34 is connected to this discharge port 29' via a conduit 33.

According to this embodiment, the first oil storage part 5' and the second oil storage part 6' constitute the reservoir 4', and the upper first oil storage part 5' is formed flat in the vertical direction. Similar to the above embodiment, it is possible to reduce the height of the portion attached to the modulator block 1.

C. Effect of the invention As described above, according to the invention, the reservoir is divided into a pair of upper and lower first and second oil storage parts, and the first oil storage part on the upper side is formed to be flat in the vertical direction,
Furthermore, an outlet for drawing out oil from the reservoir is provided at the bottom end of the second oil storage section on the lower side, so the overall height of the reservoir can be reduced compared to conventional equipment while ensuring the required capacity of the reservoir. Therefore, this device is advantageous when installed in a vehicle body space with height restrictions.

In addition, the first oil storage section is mounted on the upper part of the support body so as to be higher than the solenoid valve, and the inlet for returning oil from the solenoid valve to the reservoir is higher than the lowest oil level set for the reservoir. Since the oil reservoir is also provided below, the above-mentioned advantages of the conventional device in which the entire reservoir is disposed on the support body are achieved even though a portion of the reservoir (i.e., most of the second oil storage portion) is placed on the side or below the solenoid valve. can be utilized as is.

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of the present invention, with Figure 1 being a vertical side view and Figure 2 being a side view of the first embodiment.
3 is a perspective view of the oil filter, and FIG. 4 is a longitudinal sectional view corresponding to FIG. 2 of another embodiment of the present invention. 1...Modulator block as a support,
2a, 2b, 2c... Solenoid valve, 4, 4'... Reservoir, 5, 5'... First oil storage section, 6, 6'... Second
Oil storage section.

Claims (1)

[Claims for Utility Model Registration] (1) Anti-lock control solenoid valves 2a, 2b, 2c attached to the support 1, and the solenoid valves 2a, 2
In a brake hydraulic control device comprising reservoirs 4 and 4' into which oil can be introduced from b and 2c,
a vertically flat first oil storage section 5, 5' attached to the upper part of the support body 1 so as to be at a higher position than the electromagnetic valves 2a, 2b, 2c;
A reservoir 4, 4' is constituted by a second oil storage part 6, 6' which communicates with the lower part of the oil storage part 5, 5' and is mostly disposed on the side or below the electromagnetic valves 2a, 2b, 2c. At the same time, the solenoid valves 2a, 2b, 2 are connected to the reservoirs 4, 4'.
An inlet 28 for returning oil from the reservoir 4, 4' is provided below the lowest oil level set in the reservoir 4, 4', and the second oil storage part 6, 6'
A brake hydraulic pressure control device characterized in that outlet ports 29 and 29' for discharging oil from the reservoirs 4 and 4' are provided at the lower end of the brake hydraulic pressure control device. (2) The second oil storage portions 6, 6' are connected to the solenoid valves 2a,
2. The brake hydraulic control device according to claim 1, wherein the brake hydraulic pressure control device is provided integrally with the support body 1 so as to be located on the sides of the brake hydraulic pressure control device 2b and 2c. (3) The brake hydraulic pressure control device according to claim 1, wherein the second oil storage portions 6, 6' are arranged separately from the support body 1.