Brake hydraulic device for vehicle

1. A brake hydraulic device for a vehicle, comprising:

a base body having a hydraulic pressure path for brake fluid formed therein;

an electromagnetic valve which opens and closes the hydraulic pressure path;

an electromagnetic coil which drives the electromagnetic valve; and

a housing attached to the outer surface of the base body and having a housing chamber for accommodating the electromagnetic valve and the electromagnetic coil,

wherein the housing includes a peripheral wall part having openings formed on a front side and a rear side thereof, and an intermediate wall part partitioning a space inside the peripheral wall part into a front side and a rear side,

wherein the housing chamber is provided on the rear side of the intermediate wall part, and

wherein a projecting portion is formed on at least one of a front surface and a rear surface of the intermediate wall part, and the projecting portion includes a plurality of ribs formed to extend in a radial direction in relation to a central axis of one of said openings.

2. A brake hydraulic device for a vehicle, comprising:

a base body having a hydraulic pressure path for brake fluid formed therein;

an electromagnetic valve which opens and closes the hydraulic pressure path;

an electromagnetic coil which drives the electromagnetic valve; and

a housing attached to the outer surface of the base body and having a housing chamber for accommodating the electromagnetic valve and the electromagnetic coil,

wherein the housing includes a peripheral wall part having openings formed on a front side and a rear side thereof, and an intermediate wall part partitioning a space inside the peripheral wall part into a front side and a rear side,

wherein the housing chamber is provided on the rear side of the intermediate wall part, and

wherein a recessed portion is formed on at least one of a front surface and a rear surface of the intermediate wall part, and the recessed portion includes a rib originating from the recessed portion and extending along an axis in a radial direction.

3. The brake hydraulic device for a vehicle according to claim 1 , wherein an elastic member is disposed between the rear surface of the intermediate wall part and the electromagnetic coil, and wherein the projecting portion is formed on the front surface of the intermediate wall part.

4. The brake hydraulic device for a vehicle according to claim 1 , wherein the intermediate wall part and the projecting portion are formed of resin material.

5. The brake hydraulic device for a vehicle according to claim 2 , wherein the recessed portion is formed so as to avoid bus bars embedded in the intermediate wall part.

6. The brake hydraulic device for a vehicle according to claim 2 , wherein the intermediate wall part and the recessed portion are formed of resin material.

7. The brake hydraulic device for a vehicle according to claim 3 , wherein the intermediate wall part and the projecting portion are formed of resin material.

8. The brake hydraulic device for a vehicle according to claim 5 , wherein the intermediate wall part and the recessed portion are formed of resin material.

9. The brake hydraulic device for a vehicle according to claim 1 , wherein the intermediate wall part defines a first base plane at a front surface thereof and has a cylindrical valve-insertion hole formed therethrough to receive an end portion of the electromagnetic valve,

and wherein the projecting portion comprises heat-dissipating structure which is configured to dissipate heat from the electromagnetic coil during operation thereof, the heat-dissipating structure comprising a plurality of arcuate ribs which are coaxial with an associated one of the valve-insertion holes, and which intersect the rib formed to extend in a radial direction.

10. The brake hydraulic device for a vehicle according to claim 2 , wherein the intermediate wall part defines a first base plane at a front surface thereof and has a cylindrical valve-insertion hole formed therethrough to receive an end portion of the electromagnetic valve,

and wherein the recessed portion comprises heat-dissipating structure which is configured to dissipate heat from the electromagnetic coil during operation thereof, the heat-dissipating structure comprising a plurality of arcuate ribs which are coaxial with an associated one of the valve-insertion holes, and which intersect the rib formed to extend in a radial direction.

11. A brake hydraulic device for a vehicle, comprising:

a base body having a plurality of hydraulic pressure paths for brake fluid formed therein;

a plurality of electromagnetic valves which are configured to selectively open and close the hydraulic pressure paths;

a plurality of electromagnetic coils, with one of the electromagnetic coils associated with each of the electromagnetic valves, respectively; and

a housing attached to an outer surface of the base body and having a housing chamber for accommodating the electromagnetic valves and the electromagnetic coils,

wherein the housing includes a peripheral wall part having openings formed on a front side and a rear side thereof, and an intermediate wall part partitioning a space inside the peripheral wall part into a front side and a rear side, the intermediate wall part defining a first base plane at a front surface thereof and having cylindrical valve-insertion holes formed therethrough to receive end portions of the electromagnetic valves,

wherein the housing chamber is provided on the rear side of the intermediate wall part, and

wherein a recessed portion or a projecting portion is formed on at least one of the front surface and a rear surface of the intermediate wall part, the recessed portion or the projecting portion comprising heat-dissipating structure which is configured to dissipate heat from the electromagnetic coils during operation thereof, the heat-dissipating structure comprising a plurality of ribs.

12. The brake hydraulic device for a vehicle according to claim 11 , wherein the heat-dissipating structure of the projecting portion includes a plurality of ribs formed to extend in radial directions in relation to an associated one of the valve-insertion holes, the ribs extending away from the first base plane and having openings formed therebetween.

13. The brake hydraulic device for a vehicle according to claim 12 , wherein the heat-dissipating structure of the projecting portion further includes a plurality of arcuate ribs which are coaxial with the associated one of the valve-insertion holes, and which intersect the ribs formed to extend in radial directions.

14. The brake hydraulic device for a vehicle according to claim 11 , wherein the heat-dissipating structure of the recessed portion includes a plurality of ribs formed to extend in radial directions in relation to an associated one of the valve-insertion holes, the ribs having openings formed therebetween which are formed in the intermediate wall portion.

15. The brake hydraulic device for a vehicle according to claim 11 , wherein the recessed portion is formed so as to avoid bus bars embedded in the intermediate wall part.

16. The brake hydraulic device for a vehicle according to claim 11 , wherein an elastic member is disposed between the rear surface of the intermediate wall part and the electromagnetic coil, and wherein the recessed portion or the projecting portion is formed on the front surface of the intermediate wall part.