JPH1071940A - Brake fluid pressure controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily assembled brake fluid pressure controller wherein an electronic controller and a hydraulic pressure control unit are integrally provided. SOLUTION: Solenoid valves 14 and 16 are provided to be protruded from a body surface 12a in a valve block 12. An electronic controller 51 is mounted and a circuit board 50 having the fixed exciting coils 54 and 84 of the solenoid valves 14 and 16 is joined around the solenoid valves 14 and 16 of the body surface 12a of the valve block 12. Further, yokes 60 and 89 of the solenoid valves 14 and 16 are fixed around the exciting coils 54 and 84. For assembling, sleeves 18 and 59 are inserted into the through-holes 50a and 50b of the circuit board 50 and, by fitting the yokes 60 and 89 to the sleeves 18 and 59, the exciting coils 54 and 89 and the yokes 60 and 89 are positioned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake fluid pressure control device for a vehicle, and more particularly to a brake fluid pressure control device in which an electronic control device and a fluid pressure unit are integrated.

[0002]

2. Description of the Related Art A braking force control device such as an anti-lock brake control device generally comprises a hydraulic unit incorporating a solenoid valve and an electronic control device for controlling the solenoid valve. Conventionally, in order to reduce the size of such a braking force control device, a configuration in which an electronic control device and a hydraulic unit are integrated has been known. For example, Japanese Patent Application Laid-Open No. 6-298059 discloses a brake unit including a hydraulic unit mounted so that a main body of an electromagnetic valve projects, and a cover configured to cover an electromagnetic valve mounting portion of the hydraulic unit. A hydraulic control device is disclosed. In the above-mentioned conventional brake fluid pressure control device, a circuit board on which an electronic control device is mounted is mounted on the cover, and further, a coil and a yoke of an electromagnetic valve are mounted on the circuit board. By fixing the cover having such a structure to the hydraulic unit, a brake hydraulic control unit integrated with the electronic control unit and the hydraulic unit is realized.

[0003]

In order to ensure the operation of the solenoid valve, it is necessary to accurately position the yoke and coil of the solenoid valve with respect to the main body of the solenoid valve. The above-described conventional braking force control device has a configuration in which a body portion of an electromagnetic valve is provided in a hydraulic unit, while a yoke and a coil are provided in a cover. Therefore, when assembling the conventional braking force control device, the cover must be attached to the hydraulic unit while accurately positioning the yoke and the coil with respect to the main body of the solenoid valve. In this regard,
This means that the above-mentioned conventional brake fluid pressure control device is not excellent in assembling workability.

[0004] The present invention has been made in view of the above points, and has as its object to provide a braking force control device which is excellent in assembling workability and in which an electronic control device and a hydraulic unit are integrated. I do.

[0005]

The above object is achieved by the present invention.
As described in, in the brake hydraulic pressure control device comprising a hydraulic unit, an electromagnetic valve at least partially embedded in the hydraulic unit, and a substrate mounted with an electronic control device that controls the electromagnetic valve, This is achieved by a brake hydraulic control device in which the substrate is fixed to the hydraulic unit.

In the present invention, the board on which the electronic control device for controlling the solenoid valve is mounted is fixed to a hydraulic unit provided with the solenoid valve. Therefore, the positioning of the substrate with respect to the solenoid valve is facilitated. Thereby, the assembling workability of the brake fluid pressure control device is improved.

Further, the above object is achieved by a second aspect of the present invention, wherein the solenoid valve is provided such that its yoke projects from the hydraulic unit. At the same time, the yoke is achieved by a brake fluid pressure control device fixed to the substrate.

In the present invention, the yoke of the solenoid valve projects from the hydraulic unit and is fixed to the substrate. Therefore, the yoke is positioned by positioning the substrate with respect to the solenoid valve. Therefore, the yoke can be easily positioned, and the workability of assembling the brake hydraulic pressure control device is further improved.

According to a third aspect of the present invention, there is provided a brake fluid pressure control device according to the first aspect, wherein the electromagnetic valve protrudes from the hydraulic unit, and the substrate is provided with the electromagnetic valve. Are arranged to penetrate, and
The substrate is also achieved by a brake fluid pressure control device made of a magnetic material.

In the present invention, the substrate made of a magnetic material is arranged so that the solenoid valve passes therethrough. Therefore, the magnetic flux generated by the coil of the solenoid valve is guided to the solenoid valve via the substrate. This eliminates the need for providing a magnetic material for guiding the magnetic flux to the solenoid valve.

Further, the above object is achieved by a brake fluid pressure control device according to claim 1, wherein the solenoid valve is provided such that a drive coil thereof protrudes from the hydraulic unit. In addition, the drive coil is also achieved by a brake fluid pressure control device mounted and fixed to the board.

In the present invention, the drive coil of the solenoid valve protrudes from the hydraulic unit and is mounted and fixed on the substrate. Therefore, the positioning of the electromagnetic coil is performed by positioning the substrate with respect to the electromagnetic valve. Therefore, the positioning of the electromagnetic coil is facilitated, and the workability of assembling the brake hydraulic pressure control device is further improved.

[0013]

FIG. 1 is a partial sectional view of a brake fluid pressure control device 10 according to one embodiment of the present invention. As shown in FIG. 1, the brake fluid pressure control device 10 includes a valve block 12. The valve block 12 is provided with solenoid valves 14 and 16.

The solenoid valve 14 has a sleeve 18.
The sleeve 18 is a cylindrical non-magnetic member having one end (the upper end in FIG. 1) closed. At the open end of the sleeve 18,
A skirt portion 18a having a larger opening diameter toward the end is formed. The plunger 20 and the core 22 are inserted into the sleeve 18 in order from the closed end.

The plunger 20 is a member made of a magnetic material, and can displace the inside of the sleeve 18 in the longitudinal direction of the sleeve 18. The core 22 is a member made of a magnetic material, and is press-fitted and fixed inside the sleeve 18. The core 22 has a through-hole 22a at the center thereof and a tapered portion 22b on its outer peripheral surface which engages with the skirt 18a of the sleeve 18. The core 22 is tapered from the open end side of the sleeve 18 to the tapered portion 22b.
Is pressed into the sleeve 18 until it contacts the skirt portion 18a. In this state, an air gap of a predetermined length is formed between the core 22 and the plunger 20. Accordingly, the displacement of the plunger 22 inside the sleeve 18 is restricted within the range of the predetermined air gap length. Further, a shaft 24 that passes through the through hole 22 a of the core 22 is fixed to the plunger 20.

A cylindrical portion 22c is formed at one end (the lower end in FIG. 1) of the core 22. The core 22 is provided with a fluid passage 22d that communicates the internal space of the cylindrical portion 22c with the external space of the cylindrical portion 22c. Core 2
The valve seat 26 is press-fitted into the inside of the second cylindrical portion 22c from the lower end side in FIG. A fluid passage 26a is provided at the center of the valve seat 26. An orifice 26b is provided at the end of the fluid passage 26a on the side communicating with the inside of the cylindrical portion 22c of the core 22. Further, a flange portion 26c having a larger diameter than other portions is formed in a portion of the valve seat 26 below the end surface of the core 22 in FIG.

A poppet 28 provided at one end (the lower end in FIG. 1) of the shaft 24 is opposed to the opening of the orifice 26b. A predetermined clearance is provided between the opening of the orifice 26b and the poppet 28, and the orifice 26b is configured to be opened and closed by the poppet 28. A spring 30 for urging the shaft 24 upward in FIG. 1 is disposed between the valve seat 26 and the shaft 24. Therefore, when the excitation coil 54 described later is not energized, a clearance is secured between the opening of the orifice 26b and the poppet 28, and the orifice 26b is in the open state.

In the valve block 12, cylindrical fluid passages 32 and 34 and a backup ring storage space 36 are formed coaxially with each other in this order from the inside. The fluid passage 32 is formed to have a slightly larger diameter than the outer diameter of the cylindrical portion 22c of the core 22 and the outer diameter of the flange portion 26c of the valve seat 26. The fluid passage 34 has a larger diameter than the fluid passage 32. Further, the backup ring storage space 36 is formed to have a larger diameter than the fluid passage 34 and open to the body surface 12 a of the valve block 12.

The step surface at the boundary between the fluid passage 34 and the backup ring storage space 36 is engaged with the step surface at the boundary between the tapered portion 22b and the cylindrical portion 22c of the core 22. Thereby, the core 22 closes the fluid passage 34. A backup ring 38 is hung around the skirt 18 a of the sleeve 18. The backup ring 38 is a member having a predetermined elasticity,
It is swaged and fixed in the backup ring storage space 36. As a result, the sleeve 18 is connected to the valve block 12.
The core 22 is pressed in the depth direction of the fluid passage 34 by the elastic restoring force of the backup ring 38, and is guided to the fluid passage 34 between the fluid passage 34 and the backup ring storage space 36. Sufficient sealing performance against the applied fluid pressure is ensured.

The fluid passage 32 is connected to the solenoid valve 14 in FIG.
And a fluid passage 42 extending downward. Further, the fluid passage 34 communicates with a fluid passage 44 extending rightward of the solenoid valve 14 in FIG. A cup seal 40 is mounted on the outer periphery of the valve seat 26. Cup seal 4
0 is a cylindrical portion 40a fitted into the valve seat 26;
An elastic member comprising an umbrella portion 40b extending from one end of the cylindrical portion 40a so as to be folded back to the outside of the cylindrical portion 40a. In the state where no external force acts,
The outer periphery of the umbrella portion 40b is configured to be in contact with the inner wall of the fluid passage 32. According to such a configuration, when a higher fluid pressure acts on the fluid passage 34 than on the fluid passage 32, the fluid pressure acts on the cup seal 40 so as to close the umbrella portion 40 b inward. In this case, the umbrella unit 40
A gap is formed between the outer circumference of b and the inner wall of the fluid passage 32, and the flow of the fluid in the direction from the fluid passage 34 to the fluid passage 32 via the gap is allowed. On the other hand, the fluid passage 3
When a high fluid pressure acts on the second side as compared with the fluid passage 34, the fluid pressure is applied to the cup seal 40 by the head 4
0b acts outward. In this case, the adhesion between the outer periphery of the cup seal 40 and the inner wall of the fluid passage 32 is enhanced, and the flow of the fluid from the fluid passage 32 to the fluid passage 34 is blocked. That is, the cup seal 4
0 functions as a check valve that allows only the flow in the direction from the fluid passage 44 to the fluid passage 42.

A circuit board 50 is joined to the body surface 12a of the valve block 12 by any joining means such as bonding or bolting. The circuit board 50 includes electronic components 51a, 5a, 5c, which constitute an electronic control unit 51 described later, on a circuit pattern formed on an insulating substrate such as glass epoxy resin.
1b and the like are mounted. The circuit board 50 has through-holes 50a and 50a through which the sleeve 18 of the solenoid valve 14 and the sleeve of the solenoid valve 16 described later penetrate, respectively.
b is provided.

Around the through hole 50a of the circuit board 50,
A magnetic plate 52 is provided. Through holes 52a and 52b are provided in portions of the magnetic plate 52 facing each other across the sleeve 18. An excitation coil 54 is provided on the upper surface of the magnetic plate 52 in FIG. The exciting coil 54 includes a bobbin 56 and a bobbin 56.
And a winding 58 wound around the outer periphery of the wire.
The bobbin 56 has flanges 56a and 56b at the upper end and the lower end in FIG. 1, respectively. Further, the bobbin 56 has a pair of leg portions 56 on the bottom surface on the flange 56b side.
c, 56d. Legs 56c of bobbin 56, 5
6d are through holes 52a, 5d of the magnetic plate 52, respectively.
The excitation coil 54 is fixed to the circuit board 50 by penetrating through 2b and being fixed to the circuit board 50 at the tip. The winding 58 of the exciting coil 54 is
Is connected to a terminal 59 provided with a flange 56b by soldering or the like. The terminal 59 is connected to a predetermined position of the circuit pattern on the circuit board 50. However, the winding 58 may be directly connected to the circuit pattern of the circuit board 50.

A yoke 60 is provided around the exciting coil 54. The yoke 60 is a cylindrical magnetic member, and has a folded portion 60a that is folded inward at one end (the upper end in FIG. 1). The yoke 60 is fixed to the sleeve 18 by fitting the inner peripheral surface of the folded portion 60 a to the outer peripheral surface of the sleeve 18. Further, a collar 63 made of a magnetic material is provided on the outer peripheral surface of the sleeve 18.
Is fitted at the end of the folded portion 60a side so as to press the yoke 60 toward the magnetic plate 52. The yoke 60 is fixed to the circuit board 50 together with the magnetic plate 52 by the collar 63.
In addition, the yoke 60 is fixed to the magnetic plate 5 by the collar 63.
Due to the pressing toward 2, the gap between the yoke 60 and the magnetic plate 52 is prevented from being generated. Thereby, the magnetic loss in the magnetic circuit in which the yoke 60 and the magnetic plate 52 are configured as described below is suppressed.

The bobbin 56 has a predetermined clearance C1 formed between the outer periphery of the flange 56b and the inner periphery of the yoke 60 in a state where the yoke 60 is assembled as shown in FIG. A predetermined clearance C2 is formed between the outer periphery of the folded portion 60a and the inner periphery of the bobbin 56. Thereby, the yoke 6
The yoke 60 can be inserted into the sleeve 18 without interference between the 0 and the bobbin 56.

According to the configuration of the solenoid valve 14 described above, when the excitation coil 54 is not energized, as described above,
The state is such that the fluid passage 26a and the fluid passage 22d communicate with each other. In this case, the fluid passage 42 and the fluid passage 44 are communicated via the electromagnetic valve 14. On the other hand, when the excitation coil 54 is energized, the magnetic flux generated by the excitation coil 54 circulates through a magnetic circuit composed of the yoke 60, the plunger 20, the core 22, and the magnetic plate 52, and the magnetic flux is applied to the plunger 20 by the magnetic flux. Plunger 20 and core 22
An electromagnetic force acts in a direction that reduces the air gap therebetween. This electromagnetic force is transmitted to the poppet 28 via the shaft 24 against the urging force of the spring 30, and presses the poppet 28 toward the orifice 26b. Therefore, the communication between the fluid passage 26a and the fluid passage 22d is cut off, and the communication between the fluid passage 42 and the fluid passage 44 is cut off. As described above, the solenoid valve 14 is connected to the fluid passage 42 and the fluid passage 4 depending on the energized state of the exciting coil 54.
It functions as a normally open control valve that can control the state of communication with the control valve 4.

Next, the configuration of the solenoid valve 16 will be described. In the solenoid valve 16, the sleeve 59 has the same configuration as the sleeve 18 of the solenoid valve 14. Sleeve 59
, A first core 61, a plunger 62, and a second core 64 are inserted in order from the closed side end. First
The core 61 and the second core 64 are press-fitted and fixed inside the sleeve 59. The second core 64 has a through hole 64a penetrating the center and a tapered portion 64 on the outer peripheral surface.
b. The second core 64 is pressed into the sleeve 59 until the tapered portion 64b contacts the skirt portion 59a of the sleeve 59. On the other hand, the plunger 62 is inserted so that the inside of the sleeve 59 can be displaced in the longitudinal direction.

The first core 61 has a cylindrical opening 61a that opens downward in FIG. A spring 66 for urging the plunger 62 downward in FIG. 1 is provided in the cylindrical opening 61a. Thereby, the first core 6
An air gap of a predetermined length is formed between 1 and plunger 62. Therefore, the sleeve 5 of the plunger 61
The displacement inside 9 is restricted within the range of the predetermined air gap length. The plunger 62 includes a second core 64
A shaft 68 that passes through the through hole 64a is fixed.

At one end (the lower end in FIG. 1) of the second core 64, a cylindrical portion 64c is formed. Cylindrical part 64
A valve seat 70 is press-fitted into the inside of c from the lower end side in FIG. A fluid passage 70a is provided in the center of the valve seat 70. An orifice 70b is provided at the end of the fluid passage 70a on the side communicating with the inside of the cylindrical portion 64c of the second core 64. Also, the second core 64
Is provided with a fluid passage 64d that communicates the internal space of the cylindrical portion 64c with the external space of the cylindrical portion 64c.

A poppet 72 provided at one end (the lower end in FIG. 1) of the shaft 68 faces the opening of the orifice 70b. When no power is supplied to an exciting coil 84 described later, the plunger 62 is
The poppet 72 is pressed toward the opening of the orifice 70b by being urged downward. Accordingly, in such a state, the orifice 70b is in the closed state.

The valve block 12 is provided with fluid passages 74 and 76 formed coaxially with each other. The fluid passage 74 has a slightly larger diameter than the cylindrical portion 64c of the second core 64. The fluid passage 76 is provided in the fluid passage 7.
It is formed to have a larger diameter than 4. Valve seat 70
An O-ring 7 is provided between the outer peripheral surface of the
8 are provided. The O-ring 78 allows the second core 6
The sealing performance between the fluid passage 74 and the fluid passage 76 outside the cylindrical portion 64c of the fourth and the valve seat 70 is ensured.

The fluid passage 74 is connected to the solenoid valve 16 in FIG.
Is connected to a fluid passage 79 extending downward. The fluid passage 76 communicates with a fluid passage 80 extending to the left of the solenoid valve 16 in FIG. The sleeve 59 is attached to the backup ring housing space 81 by the backup ring 82.
Are fixed to the valve block 12 by being fixed. A magnetic plate 83 and an exciting coil 84 composed of a bobbin 86 and a winding 88 are provided at a portion of the substrate 50 corresponding to the electromagnetic valve 16. Further, a yoke 89 and a collar 90 are mounted around the exciting coil 84. These configurations are the same as the above-described configurations of the backup ring storage space 36, the backup ring 38, the magnetic plate 52, the exciting coil 54, the yoke 60, and the collar 63 of the solenoid valve 14, and a description thereof will be omitted.

According to the configuration of the solenoid valve 16 described above, when the excitation coil 84 is not energized, as described above,
When the poppet 72 is pressed toward the opening of the orifice 70b, the fluid passage 70a and the fluid passage 64d are shut off. In this case, communication between the fluid passage 79 and the fluid passage 80 is blocked by the electromagnetic valve 16. On the other hand, when the excitation coil 84 is energized, the magnetic flux generated by the excitation coil 84 circulates through a magnetic circuit including the yoke 89, the first core 61, the plunger 62, the second core 64, and the magnetic plate 83. The plunger 62 and the first core 61 are attached to the plunger 62 by the magnetic flux.
An electromagnetic force acts in a direction that reduces the air gap therebetween. This electromagnetic force is transmitted to the poppet 72 via the shaft 68 against the urging force of the spring 66, and urges the poppet 72 in a direction to separate from the orifice 70b. Therefore, the fluid passage 70a and the fluid passage 64d are in communication with each other, and the fluid passage 79 and the fluid passage 80 are in communication. As described above, the solenoid valve 16 functions as a normally closed control valve that can control the state of communication between the fluid passage 79 and the fluid passage 80 depending on the state of energization of the excitation coil 84.

On the left side of the circuit board 50 of the valve block 12 in FIG.
2 is fixed. The output terminal 50c of the circuit board 50 is connected to the external output terminal 100. Further, the cover member 104 is fixed to the valve block 12 so as to cover the circuit board 50.

Next, FIG. 2 shows a hydraulic circuit diagram of the ABS control system constituted by the brake hydraulic pressure control device 10.
As shown in FIG. 2, the fluid passage 42 is
The fluid passage 44 is connected to the wheel cylinder 102, and the fluid passage 79 is connected to the reservoir 104.
The fluid passage 80 communicates with the fluid passage 44.
The check valve 106 is a check valve constituted by the cup seal 40 as described above.

With this configuration, when the solenoid valve 14 is opened and the solenoid valve 16 is closed as shown in FIG.
02 is realized. When the solenoid valve 14 is closed and the solenoid valve 16 is opened, the brake fluid in the wheel cylinder 102 becomes the reservoir 1.
04, the pressure in the wheel cylinder 102 is reduced. That is, in such a state, the decompression mode is realized. Further, when both the solenoid valve 14 and the solenoid valve 16 are closed, a holding mode in which the hydraulic pressure of the wheel cylinder 102 is held is realized. The check valve 106 allows the master cylinder 100 to recover the brake fluid in the wheel cylinder 102 when the hydraulic pressure generated by the master cylinder 100 is reduced by releasing the brake pedal in the pressure reduction mode or the holding mode. It is provided for.

In this embodiment, the electronic control unit 51 mounted on the circuit board 50 turns on and off the current applied to the exciting coils 54 and 84 of the solenoid valves 14 and 16, thereby opening and closing the solenoid valves 14 and 16. , The pressure increase mode, the pressure decrease mode, and the holding mode are switched. Then, the electronic control unit 51 monitors the slip ratio of the wheels during braking, and switches the three modes appropriately so that the slip ratio does not exceed a predetermined value, thereby realizing antilock brake control.

However, the present invention is not limited to the antilock brake control, but also includes a traction control for preventing idling of driving wheels caused by an excessive driving torque by controlling a braking force, and a vehicle for controlling a braking force by controlling a braking force. Vehicle stabilization control to prevent the wheels from locking when turning
The present invention can be applied to any control using the braking force control.

Although FIGS. 1 and 2 show only one system of solenoid valves 14 and 16, the valve block 12 is provided with another system of solenoid valves not shown. That is,
In the brake fluid pressure control device 10 of the present embodiment, fluid pressure control circuits for all the systems of the wheels are mounted.

Next, a method of assembling the brake fluid pressure control device 10 will be described with reference to FIG. 3 together with FIG. FIG.
Is a valve block 12 in which solenoid valves 14 and 16 are incorporated.
And the electronic control unit 51 is mounted, and the solenoid valve 14
Circuit board 50 on which 16 excitation coils 54 and 84 are fixed
And the yokes 60 and 89 before being assembled to each other. As shown in FIG. 3, first, the circuit board 50 is attached to the body surface 12 a of the valve block 12 by the sleeves 18 and 5.
9 are installed and joined so as to penetrate through holes 50a and 50b, respectively. Next, the yokes 60 and 89 have the inner peripheral surfaces of the folded portions 60a and 89a,
It is fixed by being fitted on the outer periphery of the 59. Furthermore,
The collars 63 and 90 are fitted into the sleeve 18 from above the yokes 60 and 89 in the drawing, and the solenoid valves 14 and 16 are assembled in a proper state. Thereafter, as shown in FIG. 1, after the cover 102 is fixed to the body surface 12a of the valve block 12, the output terminal 50c of the circuit board 50 is connected to the external output terminal 1.
00 is connected by soldering or the like. Finally, the cover member 104 is fixed to the valve block 12 by bolting or the like in a state where the engaging portions 104a and 102a are engaged with each other, and the assembly of the brake fluid pressure control device 10 is completed.

As described above, in this embodiment, the circuit board 50 on which the electronic control unit 51 is mounted is mounted on the valve block 1.
2 is fixed to the body surface 12a, so that the solenoid valve 14,
The electronic control unit 51 is arranged in a space that is originally a dead space around the 16 projecting portions. Therefore, in the present embodiment, the electronic control device 51 can be integrated into the valve block 12 without increasing the size of the brake fluid pressure control device 10.

In this embodiment, when assembling the brake fluid pressure control device 10, the exciting coils 54 and 8
4 is fixed to the body surface 12a of the valve block 12 so that the through holes 50a and 50b pass through the sleeves 18 and 59, so that the excitation coils 54 and 84 And 16 plungers 2
It is located around 0 and 62. That is, in the present embodiment, the circuit board 50 and the solenoid valves 14 and 16 are both fixed to the valve block 12 so that the
0a, 50b and the sleeves 18, 5 of the solenoid valves 14, 16
9 can function as a guide for positioning the circuit board 50 and the solenoid valves 14 and 16, and the above positioning can be easily performed. in this way,
In the present embodiment, a brake fluid pressure control device excellent in assembly workability is realized.

The brake fluid pressure control device 10 according to the present embodiment
The yoke 60, 89 is fixed around the solenoid valves 14, 16 of the circuit board 50 by fitting the yokes 60, 89 around the sleeves 18, 59. Therefore, when assembling the brake fluid pressure control device 10, the yoke 60
And 89 will be positioned by simply fitting the yokes 60,89 to the sleeves 18,59. Thereby, the assembling workability of the brake fluid pressure control device 10 is further improved.

In this case, as described above, the bobbins 56 and 86
And the yokes 60, 89 between the clearances C1, C2
Is provided, even when the exciting coils 54, 84 are slightly displaced from their normal positions, the yokes 60, 8
9 can be mounted without interfering with the bobbins 56 and 86. Thereby, the valve block 12 of the circuit board 50 is
The positioning accuracy with respect to the pressure control is eased, and the assembling of the hydraulic pressure control device 10 is further facilitated.

Further, in this embodiment, the heat generated in the electronic control unit 51 flows out of the circuit board 50 to the valve block 12. Since the valve block 12 is a metal block, it has a relatively large heat conductivity and heat capacity. Therefore, in the brake fluid pressure control device 10 of the present embodiment, since a large heat dissipation effect is obtained by the valve block 12, it is not necessary to provide a separate heat dissipation means such as a heat sink on the circuit board 50.

In this embodiment, the yokes 60, 89 are fixed to the circuit board 50 by fitting the yokes 60, 89 to the sleeves 18, 59 as described above. Even when the circuit board 50 is fixed to the periphery of the valve block 50 and the circuit board 50 is fixed to the body surface 12 of the valve block 12, the yokes 60 and 89 can be easily positioned.

Next, a second embodiment of the present embodiment will be described with reference to FIG. FIG. 4 is a cross-sectional view of the brake fluid pressure control device 150 of the present embodiment. In FIG. 4, FIG.
The same components as those described above are denoted by the same reference numerals, and description thereof will be omitted. The brake fluid pressure control device 150 of this embodiment is characterized in that a magnetic plate 152 is interposed between the circuit board 50 and the valve block 12.

As shown in FIG. 4, the magnetic plate 152 is joined to the body surface 12a of the valve block 12. Further, a circuit board 50 is joined to the surface of the magnetic plate 152. The magnetic plate 152 is mounted on the circuit board 50.
Through holes 152 at positions corresponding to through holes 50a and 50b of
a and 152b. The sleeves 18 and 59 of the solenoid valves 14 and 16 are provided with through holes 50a, 152a and 50a of the circuit board 50 and the magnetic plate 152, respectively.
b, 152b.

In this embodiment, the exciting coils 54, 8
The four bobbins 56 and 86 are directly fixed to the circuit board 50. The yokes 60 and 89 are fitted on the outer peripheral surfaces of the sleeves 18 and 59 as in the case of the first embodiment. However, in the present embodiment, the lower ends of the yokes 60 and 89 in FIG.
c and 50d, and is in contact with the surface of the magnetic plate 152. Therefore, a gap is prevented from being formed between the yokes 60 and 89 and the magnetic plate 152. Therefore, the magnetic flux generated by the exciting coils 54 and 84 is
The electromagnetic valves 14 and 16 are operated without loss between the yokes 60 and 89 and the magnetic plate 152.

When assembling the brake fluid pressure control device 150 of this embodiment, first, a magnetic plate 152 is joined to the body surface 12a of the valve block 12 in which the solenoid valves 14 and 16 are assembled as shown in FIG. After the excitation coil 5
The circuit board 50 on which the electronic control device 51 is mounted is bonded to the magnetic material plate 152. Furthermore,
The yokes 60 and 89 are provided around the exciting coils 54 and 84 and are fixed to the magnetic plate 152. After the cover 102 is fixed to the body surface 12a of the valve block 12, the output terminal 50c of the circuit board 50 is connected to the external output terminal 100 by soldering or the like. Finally,
In this embodiment, the cover member 104 is fixed to the valve block 12 by bolting or the like in a state where the engaging portions 104a and 102a are engaged with each other, and the assembly of the brake fluid pressure control device 150 is completed. Since the electronic control unit 51 is disposed in the dead space around the protruding portions of the solenoid valves 14 and 16 by fixing the unit 50 to the body surface 12a of the valve block 12, the brake hydraulic pressure control unit 150 is enlarged. Without doing so, the electronic control unit 51 and the valve block 12 can be integrated. Further, similarly to the first embodiment, the brake fluid pressure control device 150
When assembling, the positioning of the exciting coils 54 and 84 and the yokes 60 and 89 is facilitated, so that the assembling workability of the brake fluid pressure control device 150 is improved.
Further, the heat generated in the electronic control unit 51 flows out to the valve block 12 via the magnetic plate 152,
It is unnecessary to provide a heat radiating means such as a heat sink on the circuit board 50.

Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 5 is a cross-sectional view of the brake fluid pressure control device 200 of the present embodiment. The brake fluid pressure control device 200 of the present embodiment is characterized in that the circuit board 202 is made of a magnetic material and a magnetic plate is omitted. In FIG. 5, the same components as those in FIG. 4 are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 5, a circuit board 202 is configured by mounting an electronic control unit 51 on a circuit pattern formed on a board made of a magnetic material. Circuit board 202
Are provided with through holes 202a and 202b,
2a and 202b are connected to the sleeves 18 and 5 of the solenoid valves 14 and 16, respectively.
9 through the body surface 12a of the valve block 12.
Is joined to.

Next, a method of assembling the brake fluid pressure control device 200 will be described with reference to FIGS. FIG. 6 shows a valve block 1 in which solenoid valves 14 and 16 are incorporated.
2, the electronic control unit 51 is mounted, and the solenoid valve 1 is mounted.
This shows a state before the circuit board 202 to which the 4 and 16 excitation coils 54 and 84 are fixed and the yokes 60 and 89 are assembled to each other. As shown in FIG. 6, the circuit board 202 includes
Sleeves 18 and 59 are installed and joined to the body surface 12a of the valve block 12 so as to pass through the through holes 50a and 50b, respectively. Next, the yokes 60 and 89 have the inner peripheral surfaces of the folded portions 60a and 89a,
It is fixed by being fitted on the outer periphery of the 59. Furthermore,
The collars 63 and 90 are fitted into the sleeve 18 from above the yokes 60 and 89 in FIG. 6, and the solenoid valves 14 and 16 are assembled in a proper state. Thereafter, as shown in FIG. 5, after the cover 102 is fixed to the body surface 12a of the valve block 12, the output terminals 202c of the circuit board 202 are connected to the external output terminals 100 by soldering or the like. Finally, the cover member 104 is fixed to the valve block 12 by bolting or the like in a state where the engaging portions 104a and 102a are engaged with each other, and the assembly of the brake fluid pressure control device 10 is completed.

According to the configuration of the brake fluid pressure control device 200 described above, the magnetic flux generated by the exciting coil 54
0, the core 20, the plunger 22, and the circuit board 202, and the magnetic flux generated by the exciting coil 84 is supplied to the yoke 89, the first core 61, the plunger 62, and the second core 64.
Circulate. As described above, in this embodiment, the circuit board 202 forms a part of the magnetic circuit that guides the magnetic flux generated by the exciting coils 54 and 84 to the plungers 20 and 62, so that the circuit board 202 Also serves as a magnetic plate in the second embodiment. That is, in the present embodiment, the number of components is reduced by eliminating the need to provide a magnetic plate. As described above, according to the present embodiment, the brake fluid pressure control device 200 having the same effect as the brake fluid pressure control devices 10 and 150 of the first and second embodiments can be realized with fewer components. I have.

In the first to third embodiments,
The valve block 12 corresponds to the hydraulic unit described above.

[0055]

As described above, according to the first aspect of the invention, the positioning of the board on which the electronic control device is mounted with respect to the solenoid valve is facilitated, so that the hydraulic unit and the electronic control device are integrated. It is possible to improve the workability of assembling the brake hydraulic pressure control device thus constructed. Further, since the heat generated in the electronic control unit is transferred to the hydraulic unit via the board, the hydraulic unit can be used as a radiator. Accordingly, the heat radiating device can be downsized, and thus the entire device can be downsized.

According to the second aspect of the present invention, since the positioning of the yoke of the solenoid valve is facilitated, the workability of assembling the brake fluid pressure control device can be further improved. According to the third aspect of the present invention, since the substrate is made of a magnetic material, it is not necessary to provide a magnetic material for assisting the flow of the magnetic flux to the solenoid valve. The number of parts of the control device can be reduced.

Further, according to the fourth aspect of the invention, the positioning of the drive coil of the solenoid valve is facilitated, so that the assembling workability of the brake fluid pressure control device can be further improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a brake fluid pressure control device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a braking force control system configured by the braking fluid pressure control device of the present embodiment.

FIG. 3 is a diagram showing a state before assembling of the brake fluid pressure control device of the present embodiment.

FIG. 4 is a sectional view of a brake fluid pressure control device according to a second embodiment of the present invention.

FIG. 5 is a sectional view of a brake fluid pressure control device according to a third embodiment of the present invention.

FIG. 6 is a diagram showing a state before the assembling of the brake fluid pressure control device of the present embodiment.

[Explanation of symbols]

 10, 150, 200 Brake fluid pressure control device 12 Valve block 14, 16 Solenoid valve 50, 202 Circuit board 51 Electronic control device 54, 84 Excitation coil 60, 89 Yoke

Claims (4)

[Claims] 1. A brake hydraulic pressure control device comprising: a hydraulic unit; an electromagnetic valve at least partially embedded in the hydraulic unit; and a substrate on which an electronic control device for controlling the electromagnetic valve is mounted. The brake fluid pressure control device, wherein the substrate is fixed to the fluid pressure unit. 2. The brake hydraulic pressure control device according to claim 1, wherein the solenoid valve is provided so that a yoke thereof protrudes from the hydraulic unit, and the yoke is fixed to the substrate. A brake fluid pressure control device characterized by the above-mentioned. 3. The brake hydraulic pressure control device according to claim 1, wherein the solenoid valve protrudes from the hydraulic unit, and the substrate is disposed so that the solenoid valve passes therethrough,
The brake fluid pressure control device is characterized in that the substrate is made of a magnetic material. 4. The brake hydraulic pressure control device according to claim 1, wherein the solenoid valve is provided such that a drive coil thereof protrudes from the hydraulic unit, and the drive coil is mounted and fixed to the substrate. A brake fluid pressure control device.