JP2000264192A - Vehicle brake fluid pressure control device - Google Patents

Abstract

(57) [Problem] To provide a synthetic resin cover in which a valve portion of an electromagnetic valve for controlling brake fluid pressure of a wheel brake is housed in a housing and covers a solenoid portion of each electromagnetic valve and is fastened to the housing. A plurality of individual busbars, one end of which is individually connected to one end of the coil of each solenoid unit, and a single common busbar commonly connected to the other end of each coil are embedded, and the other end of each individual busbar and the common busbar are embedded. In the vehicle brake fluid pressure control device in which the electronic control unit is connected to the electronic control unit, before assembling the cover to the housing, it is necessary to check whether or not the operation switching control of each solenoid valve by the electronic control unit functions normally. And make it possible to check efficiently. A plurality of windows (88) that respectively face individual bus bars ( _71O2 , _71C2) and an intermediate portion of a common bus bar are provided on a surface of a cover (21) facing the housing (20). Provided to avoid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin cover in which a valve portion of an electromagnetic valve for controlling brake fluid pressure of a wheel brake is housed in a housing, and covers a solenoid portion of each electromagnetic valve and is fastened to the housing. A plurality of individual busbars, one end of which is individually connected to one end of the coil of each solenoid unit, and a single common busbar commonly connected to the other end of each coil are embedded. The present invention relates to a vehicle brake fluid pressure control device having an electronic control unit connected to the other end.

[0002]

2. Description of the Related Art Conventionally, such an apparatus is disclosed in, for example,
It is already known in, for example, JP-A-122364.

[0003]

In such a vehicle brake fluid pressure control device, a cover in which each coil is connected to a plurality of individual bus bars and a single common bus bar is fastened to the housing. Before assembling such a cover to the housing, it is desirable to confirm whether or not the operation switching control of each solenoid valve by the electronic control unit functions normally.

By the way, before the cover is assembled to the housing, the operation of the valve by the demagnetization / excitation switching control of each coil is confirmed because each valve housed in the housing is not connected to the solenoid. It is not possible. Therefore, by confirming whether or not a normal electric signal is output from the electronic control unit and whether or not the individual bus bar and the common bus bar and the coil are normally connected without disconnection, each of the electronic control unit It is determined whether the operation switching control of the solenoid valve functions normally. In making this determination, conduction and cutoff between the individual bus bar and the common bus bar corresponding to each coil and detection of an electric signal flowing between both bus bars may be performed. However, most of the individual bus bar and the common bus bar except for both ends are buried in the cover, and the connection between one end of the individual bus bar and the common bus bar and the coil is hidden by a part of the solenoid part, so that the connection is made. It is difficult to make a detector contact a part.

On the other hand, as in the vehicle brake fluid pressure control device disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 6-122364, the other end of each individual bus bar and the common bus bar is used to connect to the electronic control unit. If the electronic control unit, which is arranged as a terminal and faces the inside of the coupler unit integral with the cover and is connected to those connector terminals, is arranged outside the cover, the detector is connected to the connector terminal in a state where the electronic control unit is not connected. Can be contacted. For this reason, it is possible to confirm whether the individual bus bar and the common bus bar and the coil are normally connected without disconnection, but in the connection state of the electronic control unit, the connection between the electronic control unit and the connector terminal is not performed. Since it is impossible to contact the detector, it is determined whether or not a normal electric signal is output from the electronic control unit.
The electronic control unit alone has to be inspected in a disconnected state with the connector terminal. Therefore, it is not only uncertain whether the operation switching control of each electromagnetic valve by the electronic control unit normally functions or not, but also it takes time and effort.

Further, there is also a brake fluid pressure control device in which an electronic control unit is housed in a cover. In this case, it is checked whether or not the individual bus bar and the common bus bar and the coil are normally connected without disconnection. It will also be difficult to do.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and before assembling the cover to the housing, it is necessary to reliably determine whether the electronic control unit controls the operation switching of each solenoid valve to function normally. It is an object of the present invention to provide a brake fluid pressure control device for a vehicle which can be checked efficiently and efficiently.

[0008]

In order to achieve the above-mentioned object, the invention according to claim 1 provides a valve portion of a normally-open solenoid valve interposed between a master cylinder and a wheel brake, and the wheel brake and the wheel brake. The valve portion of the normally closed solenoid valve interposed between the reservoirs is housed in the housing, and the solenoid portion of each of the normally open solenoid valve and each of the normally closed solenoid valves has a coil, respectively. Protruding,
A plurality of individual busbars, one end of which is individually connected to one end of each coil, and a single common busbar, which is commonly connected to the other end of each coil, are fastened to the housing, covering each solenoid portion. In a vehicle brake fluid pressure control device in which an electronic control unit is connected to the other end of each of the individual bus bars and the common bus bar, the individual bus bar and the common bus bar are embedded in a cover made of synthetic resin. A plurality of windows respectively facing the middle part of the bus bar and the common bus bar are provided so as to avoid the positions where the solenoid parts are arranged.

According to such a configuration, the cover of the state in which the coils and the electronic control unit are connected to the plurality of individual bus bars and the single common bus bar is not fastened to the housing, and the coil of each window is connected to the coil. By selecting a pair of windows corresponding to the corresponding paired individual bus bar and the common bus bar, conducting / blocking between the individual bus bar and the common bus bar facing both windows, and detecting a current flowing between the both bus bars, etc. It is possible to confirm whether the individual bus bar and the common bus bar and the coil are normally connected without disconnection, and whether a normal electric signal is output from the electronic control unit. Therefore, it is possible to reliably and efficiently check whether or not the operation switching control of each electromagnetic valve by the electronic control unit functions properly before the cover is fastened to the housing.

[0010] The invention according to claim 2 provides the above-described claim 1.
In addition to the configuration of the invention described above, the cover includes a first resin molded body in which each of the individual bus bars and the common bus bar is embedded and to which the electronic control unit is attached, and a first resin molded body covering the electronic control unit. And each of the windows is formed in the first resin molded body.

According to the second aspect of the present invention, even in the brake fluid pressure control device in which the electronic control unit is housed in the cover, the operation switching control of each solenoid valve by the electronic control unit is controlled. Not only is it possible to reliably and efficiently check whether or not to function normally, but also the electronic control unit and each coil are not connected to each individual bus bar and common bus bar, and the second resin In the first resin molded body which is not connected to the molded body, the conduction between the bus bars facing the selected pair of windows.
By detecting the interruption, it is possible to inspect a short circuit between the bus bars embedded in the first resin molded body.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on one embodiment of the present invention shown in the attached drawings.

1 to 9 show an embodiment of the present invention. FIG. 1 is a brake hydraulic circuit diagram of a brake device for a passenger vehicle, and FIG. 2 is a partially cutaway side view of a brake hydraulic pressure control device. 3 is a view taken in the direction of the arrow 3 in FIG. 2, FIG. 4 is a view taken in the direction of the arrow 4 in FIG. 2, FIG. 5 is an enlarged sectional view taken along line 5-5 in FIG. 3, FIG. FIG. 8 is a view of the first molded body of the cover as viewed from the direction of arrows 7-7 in FIG. 5, FIG. 8 is a rear view of the first molded body of FIG.
FIG. 4 is a front view of the bus bar assembly.

[0014] First, in FIG. 1, a master cylinder M of a tandem type, equipped with a vehicle operator first and second output ports 1 ₁ generates a brake fluid pressure corresponding to the depression force applied to the brake pedal P is 1 ₂ And a left front wheel brake B ₁ , a right rear wheel brake B ₂ , a right front wheel brake B _{3, a} left rear wheel brake B _4, and the first and second output ports 11 ₁ and _12. First individually connected to
And brake fluid pressure control device 3 is provided between the second output hydraulic pressure line 2 _1, 2 _2, the brake fluid pressure control device 3 and the right, between the wheels for the left rear wheel brake B _2, B _4, First and second proportional pressure reducing valves 4 ₁ and 4 ₂ are provided respectively.

The brake fluid pressure control device 3 includes a _first wheel brake B ₁ , a right rear wheel brake B ₂ , a right front wheel brake B _3, and a left rear wheel brake B ₄ . First, second, third and fourth normally open solenoid valves 5
₁ and 5 _4, first to be connected in parallel to the normally open electromagnetic valves 5 ₁ to 5 _4, second, third and fourth check valves 7
And _{1-7 4,} wherein the first individually corresponding to each wheel brake B ₁ .about.B _4, second, third and fourth normally closed electromagnetic valves 6 ₁ -
6 _4, first and second reservoirs _81, 82 which first and second output fluid pressure line 2 _1, 2 ₂ respectively correspond individually
₂ and the first and second reservoirs 8 ₁ and 8 ₂
Plunger-type first and second pumps 11 ₁ and 11 ₂ connected via respective ₁ and 10 ₂ , and both pumps 11
_1, 11 ₂ and the common one electric motor 12 for driving the discharge valve 13 _1, 1 to ₂ first and second pumps 11 _1, 11
3 ₂ and the first and second dampers 14 _1, 14 ₂ are connected via respective first and second output fluid pressure line 2 _1, 2 ₂ and the first and second dampers 14 _1, 14 ₂ and First and second orifices 15 respectively interposed between
_1, comprising 15 and _2, the normally open electromagnetic valve 5 ₁ to 5 _4, and an electronic control unit 16 for controlling the operation of the normally closed solenoid valve ₆₁ through ₄ and the electric motor 12.

First normally open solenoid valve 5₁Is the first output hydraulic path
2₁And left front wheel brake B ₁Provided between the
2 normally open solenoid valve 5_TwoIs the first output hydraulic pressure path 2₁And the first
Proportional pressure reducing valve 4₁A third normally-open solenoid valve 5
_ThreeIs the second output hydraulic path 2_TwoAnd right front wheel brake
B_ThreeA fourth normally-open solenoid valve 5_FourIs the second output
Hydraulic passage 2_TwoAnd the second proportional pressure reducing valve 4_TwoIt is provided between them.

[0017] The first to fourth check valves 7 ₁ to 7 _4,
From the corresponding wheel brakes B _{1 to} B ₄ to master cylinder M
So as to permit a flow of brake fluid to be connected in parallel to the normally open electromagnetic valves 5 ₁ to 5 _4.

First normally closed solenoid valve 6₁Is the left front wheel
Rake B₁And the first reservoir 8₁Between the second
Normally closed solenoid valve 6_TwoIs the first proportional pressure reducing valve 4₁And the first
Observer 8₁A third normally closed solenoid valve 6_ThreeIs right
Front wheel brake B_ThreeAnd the second reservoir 8_TwoSet between
The fourth normally closed solenoid valve 6_FourIs the second proportional pressure reducing valve 4 _Two
And the second reservoir 8_TwoIt is provided between them.

[0019] Such brake fluid pressure control apparatus 3, when the potential-free normal braking of each wheel is caused to lock, the wheel brake B ₁ .about.B with communicating between the master cylinder M and the wheel brakes B ₁ .about.B _{4 4} and reservoir 8 ₁ , 8 ₂ . That the normally open electromagnetic valve 5 ₁ to 5 ₄ are deenergized, the normally closed solenoid valve ₆₁ through ₄ while being an open state is demagnetized, a closed state, the first output port of the master cylinder M brake fluid pressure outputted from the 1 ₁ is configured to act on the left front wheel brake B ₁ via the first normally open electromagnetic valve 5 _1, second normally open electromagnetic valve 5 ₂ and the first proportional pressure reducing valve 4 acts on the right rear wheel brake B ₂ via the _1. The brake fluid pressure outputted from the second output port 1 ₂ of the master cylinder M is configured to act on the right front wheel brake B ₃ through the third normally open electromagnetic valve 5 _3, fourth normally open electromagnetic the valve 5 ₄ and the second proportional pressure reducing valve 4
₂ acting on the left rear wheel brake B ₄ through.

During the above-mentioned braking, the wheels enter a locked state.
When this happens, the brake fluid pressure control device 3
Master at the part corresponding to the wheel that is about to enter the lock state
Cylinder M and wheel brake B₁~ B_FourShut off
With wheel brake B₁~ B_FourAnd reservoir 8₁,
8_TwoCommunicate between That is, the first to fourth normally-open solenoid valves 5
₁~ 5_FourOf the wheels that are about to enter the locked state
The corresponding normally open solenoid valve is excited and closed, and the first
-4th normally closed solenoid valve 6₁~ 6_FourOf the above wheels
The normally closed solenoid valve is energized and opened. As a result,
Some of the brake fluid pressure on the wheels
First reservoir 8₁Or the second reservoir 8 _TwoIs absorbed by
The brake fluid pressure of the wheel about to enter the lock state decreases.
Will be pressed.

When the brake fluid pressure is kept constant, the brake fluid pressure control device 3 controls the wheel brakes B ₁ -B
₄ a state of blocking from the master cylinder M and the reservoir 8 _1, 8 _2. That normally open electromagnetic valve 5 ₁ to 5 ₄ are energized, while being closed, the normally closed solenoid valve ₆₁ through ₄ are demagnetized, will be closed. When further pressure increase the brake fluid pressure, the normally open electromagnetic valve 5 ₁ to 5 ₄ are deenergized, both are opened, the normally closed solenoid valve ₆₁ through ₄ are demagnetized, the closed state Just do it.

[0022] By thus controlling the demagnetization-excitation of the normally open electromagnetic valve 5 ₁ to 5 ₄ and the normally closed electromagnetic valve ₆₁ through ₄ in the electronic control unit 16 without locking the wheels , Can be braked efficiently.

By the way, the anti-lock blur described above
During the brake control, the electric motor 12 is controlled by the electronic control unit 16.
Activated by For the operation of the electric motor 12,
Accordingly, the first and second pumps 11₁, 11_TwoIs driven
Therefore, the first and second reservoirs 8₁, 8_TwoAbsorbed into
The brake fluid is supplied to the first and second pumps 11.₁, 11 _Two
And then the first and second dampers 14₁, 14
_TwoAnd the first and second orifices 15₁, 1
5_TwoThrough the first and second output hydraulic lines 2₁, 2 _TwoReflux
Is done. Due to such a reflux of the brake fluid, the first and second brake fluids are generated.
And second reservoir 8₁, 8_TwoDue to the absorption of brake fluid
It is possible to prevent an increase in the amount of depression of the brake pedal P.
You. Moreover, the first and second pumps 11₁, 11_TwoDischarge
The pressure pulsation is caused by the first and second dampers 14.₁, 14_Two,
And first and second orifices 15₁, 15_TwoCollaboration
Is absorbed by the
The operation feeling of the dull P is not hindered.

In FIG. 2 to FIG.
The device 3 is made of a block of, for example, aluminum alloy
And a housing 20 formed in
The first to fourth normally open solenoid valves 5 are provided in the housing 20.₁~
5_Four, First to fourth normally closed solenoid valves 6 ₁~ 6_Four, First to fourth
Check valve 7₁~ 7_Four, First and second reservoirs 8₁,
8 _Two, First and second dampers 14₁, 14_Two, First and
And second orifice 15₁, 15_Two, And the first and
Second pump 11₁, 11_TwoIs provided. Also house
Cover 20 made of synthetic resin on one side of the
For example, four bolts 22₁, 22₁...
On the other side of the housing 20 opposite the cover 21, an electric motor
The motor case 23 of the motor 12 has a plurality of, for example, three bolts.
G22_Two, 22_Two... is concluded.

The first to fourth normally open electromagnetic valve 5 ₁ to 5 ₄ and the first through fourth normally closed electromagnetic valves ₆₁ through 65 _4, as shown in Figure 3, the housing arranged in parallel to each other The first and second reservoirs 8 ₁ , 8 ₂ are provided with the first to fourth normally open solenoid valves 5 ₁ to _{4 with} respect to the first to _fourth normally closed solenoid valves 6 _{1 to} 6 ₄ .
5 ₄ The disposed in the housing 20 on the opposite side, the first and second dampers 14 _1, 14 _2, first to fourth normally closed electromagnetic valve ₆₁ through _4, and the first and second reservoirs 8 ₁ , 8
It is disposed on the housing 20 at a position corresponding to between the _two .

The output shaft 27 of the electric motor 12 extends into the housing 20. A ball bearing 30 mounted on an eccentric shaft 27a provided on the output shaft 27
The first and second pumps 11 ₁ and 11 ₂ are in contact with the tips of the plungers 31. Therefore, when the output shaft 27 is rotated by the operation of the electric motor 12, an eccentric motion is given to the ball bearing 30 via the eccentric shaft portion 27a, whereby a pump operation is given to each of the plungers 31.

[0027] In FIG. 5, the second normally open electromagnetic valve 5 _2,
The valve portion 5a is constituted by a valve portion 5a and a solenoid portion 5b. The valve portion 5a is housed in a mounting hole 32 provided in the housing 20 so as to open on one surface of the housing 20. Protruding from.

The valve portion 5a includes a valve housing 33 formed of a magnetic metal in a stepped cylindrical shape.
The valve housing 33 is fitted in the mounting hole 32 provided in the housing 20. A retaining ring 34 that engages with the valve housing 33 and prevents the valve housing 33 from being detached from the mounting hole 32 is fitted to the inner surface near the opening end of the mounting hole 32. In addition, annular seal members 35 and 36 are mounted at two axially spaced locations on the outer surface of the valve housing 33. The housing 20 is disposed between the sealing members 35 and 36.
And an annular chamber 37 is formed between the valve housing 33 and
A filter 38 is mounted on the outer periphery of the valve housing 33 at a portion facing the annular chamber 37.

[0029] housing 20, the output fluid pressure channel 2 and a hydraulic passage 39 which opens coaxially into the inner end of the mounting hole 32 with connected to _1, the annular chamber right rear wheel brake B ₂ together lead to 37 a hydraulic pressure passage 40 connected is provided in the check valve 7 ₂ is incorporated in the valve housing 33 so as to be interposed between the annular chamber 37 and hydraulic passage 39.

The valve section 5a is connected to the hydraulic passage 39,
An operation is performed so as to switch the communication / cutoff between the valves 40 in accordance with the demagnetization / excitation of the solenoid portion 5b.

The solenoid portion 5b is provided with a guide cylinder 41 which is connected to the valve housing 33 so as to guide the movement of a movable core (not shown) which is linked and connected to the valve body of the valve portion 5a. A bobbin 42 surrounding the guide cylinder 41,
A coil 43 wound around the bobbin 42, a magnetic path frame 44 surrounding the coil 43, and a coiled spring 45 interposed between the magnetic path frame 44 and the bobbin 42.

The guide cylinder 41 projects from one surface of the housing 20 when the valve housing 33 is mounted in the mounting hole 23. The bobbin 42 is formed of a synthetic resin such that the guide cylinder 41 is inserted coaxially, and a coil 43 is wound around the bobbin 42.

Referring also to FIG. 6, the magnetic path frame 44 includes a magnetic path cylinder 46 surrounding a half of the coil 43 on the valve housing 33 side. At one end of the magnetic path cylinder 46, a pair of connecting arm portions 47, 47 located on one diameter line thereof are integrally connected, and a first contact plate portion 48 contacting one end of the bobbin 42 is provided on both ends. The connecting arms 47 are connected to one end of the connecting arms 47. That is, the first contact plate portion 48 is connected to the connecting arm portions 47, 47.
Are formed by caulking the pair of caulking portions 47a, 47a,... Provided on both sides of one end of the connecting arm portions 47, 47 at both ends thereof. At one end of the bobbin 42, a fitting groove 49 for fitting the first contact plate portion 48 is provided along one diameter line of the bobbin 42. On the other hand, an insertion hole 50 through which the guide cylinder 41 is inserted is provided at the center of the first contact plate portion 48.

On the other hand, the other end of the magnetic path cylinder 46 is provided with a ring-shaped second contact plate 51 which is in contact with one end of the valve housing 33.
The guide cylinder 41 penetrates the second contact plate 51.

The other end of the coil-shaped spring 45, one end of which is in contact with the other end of the bobbin 42, is in contact with the second contact plate 51 of the magnetic path frame 44. The spring is biased to the side away from the housing 20, that is, the side abutting the cover 21 fastened to the housing 20.

[0036] Other normally open electromagnetic valve 5 _1, 5 _3, 5 ₄ also, the same configuration as the normally open electromagnetic valve 5 _2.

The normally closed electromagnetic valve 6 _2, which is constituted by the valve portion 6a and a solenoid portion 6b, the housing 20
The valve portion 6a is housed in a mounting hole 54 provided in the housing 20 so as to open on one surface of the housing 20.
b protrudes from one surface of the housing 20.

The valve portion 6a includes a valve housing 55 formed of a magnetic metal in a stepped cylindrical shape.
This valve housing 55 is fitted into a mounting hole 54 provided in the housing 20. A retaining ring 56 that engages with the valve housing 55 to prevent the valve housing 55 from being detached from the mounting hole 54 is fitted to the inner surface near the opening end of the mounting hole 54. Further, annular seal members 57 and 58 are mounted at two locations on the outer surface of the valve housing 55 which are spaced apart in the axial direction. The housing 20 is disposed between the sealing members 57 and 58.
And an annular chamber 59 is formed between the valve housing 55 and
A filter 60 is mounted on the outer periphery of the valve housing 55 at a portion facing the annular chamber 59.

The annular chamber 59 is provided with a right rear wheel brake B.
Are those leading to _2, the housing 20, a hydraulic passage 61 leading to the first reservoir 8 ₁ is provided so as to be opened to the inner end of the mounting hole 54.

The valve section 6a operates so as to switch between shut-off and communication between the annular chamber 59 and the hydraulic path 61 in accordance with demagnetization / excitation of the solenoid section 6b.

The solenoid portion 6b is provided with a guide cylinder 62 which is connected to the valve housing 55 so as to guide the movement of a movable core (not shown) which is operatively connected to the valve body of the valve portion 6b. A bobbin 42 surrounding the guide cylinder 62;
A coil 43 wound around the bobbin 42, a magnetic path frame 44 surrounding the coil 43, and a coiled spring 45 interposed between the magnetic path frame 44 and the bobbin 42.

A first contact plate portion 48 provided at one end of the magnetic path frame 44 is in contact with one end of the bobbin 42, and a guide hole is provided at a central portion of the first contact plate portion 48. Cylinder 6
2 is inserted. A second magnetic path frame 44 is provided on the other end side.
The contact plate 51 is in contact with the valve housing 55, and the other end of the spring 45, one end of which is in contact with the bobbin 42, is the second end.
It is in contact with the contact plate 51. Thereby, the bobbin 42
The side away from the housing 20, that is, the housing 2
The spring is biased to the side that comes into contact with the cover 21 fastened to zero.

[0043] Other normally closed electromagnetic valves 6 _1, 6 _3, 6 ₄ are configured similarly to the above-mentioned normally closed electromagnetic valve 6 _2.

[0044] In FIG 5 again, the cover 21, the first to fourth solenoid portion 5a of the normally open solenoid valves 5 ₁ to 5 ₄ ..., the first to fourth normally closed electromagnetic valve ₆₁ through ₄ Of the first and second reservoirs 8 ₁ , 8 _{2 and} a part of the first and second dampers 14 ₁ , 14 _2. And is fastened to one surface of the housing 20. In addition, an endless seal member 64 that resiliently comes into contact with one surface of the housing 20 is attached to the edge of the cover 21 on the housing 20 side.

The cover 21 is provided at one end of a first resin molded body 65 formed of a synthetic resin in a tubular shape having a rectangular cross section.
A second resin molded body 66 made of synthetic resin is formed by vibration welding so as to close one end opening of the first resin molded body 65.

Referring to FIG. 7 and FIG. 8, the first portion of the cover 21 in the first resin molded body 65 is
To fourth respective solenoid portions 5b of the normally open electromagnetic valve 5 ₁ to 5 ₄
..., and the first to fourth normally closed electromagnetic valve ₆₁ through ₄ rectangular opening 67a which respectively correspond to each individual solenoid portion 6b ... of the supporting plate portion 67 having 67a ... are formed integrally The surface of the support plate 67 on the housing 20 side is provided with the bobbin 4 in each of the solenoids 5b.
2. Receiving parts 68, 68...

On the inner surface on one end side of the first resin molded body 65, a step portion 69 facing the opposite side to the housing 20 is formed over the entire circumference. On the other hand, the electronic control unit 16
A semiconductor chip (not shown) or the like is mounted on a substrate 70 on which an electric circuit is printed, and the substrate 70 having a peripheral portion abutting on the step portion 69 is attached to the cover 2.
The first resin molded body 65 is fastened to the first resin molded body 65.

By the way the support plate portion 67, the normally open electromagnetic valve 5 ₁ to 5 manufactured by four conductive metal corresponding individually to ₄ the individual bus bars 71 _{01-71 04,} the normally closed solenoid valve 6 ₁ -
6 the individual bus bars 71 _C1 -71 _C4 made four conductive metal corresponding individually to _4, corresponding to the common to the normally open electromagnetic valves 5 ₁ to 5 ₄ and the normally closed electromagnetic valve ₆₁ through ₄ And a common conductive busbar 72 made of conductive metal.

[0049] each individual bus bar 71 _O1 ~71 _04, 71 _C1 ~
One end of the 71 _C4 are those formed as a coil connection terminals 73 ..., it is projected, one for each opening 67a ... in. The common bus bar 72 is integrally formed with eight coil connection terminals 74. Each of the coil connection terminals 74 is located at a position adjacent to each of the coil connection terminals 73. Projected into the portions 67a. That is, each of the coil connection terminals 73... 74 is connected to the opening 67 a from the first resin molding 65 in the cover 21.
.. The first resin molded body 6 so that a part thereof protrudes
5 will be supported.

The coil connection terminals 73 are connected to the first flat plate portion 7.
3a... And a second continuous with the tip of the first flat plate portion 73a at right angles.
Are formed in a substantially L-shape with the flat plate portions 73b.
First flat plate portion 73a, an opening 67a so as to extend in a direction perpendicular to the direction that is spring biased in the normally open solenoid portion 5b in the electromagnetic valve 5 ₁ to 5 ₄ ... bobbins 42 ... spring 51 ... ... Is placed within. Also, the coil connection terminal 74
Are formed in a substantially L-shape by a first flat plate portion 74a and a second flat plate portion 74b continuous at right angles to the tip of the first flat plate portion 74a, similarly to the coil connection terminals 73.

Meanwhile, the solenoid portions 5b of the normally open electromagnetic valve 5 ₁ to 5 ₄ and the normally closed electromagnetic valves 6 ₁ to 6 ₄ ..., 6b
The bases of a pair of terminal plates 75 are buried in the bobbins 42. Both ends of each coil 43 are connected to the terminal plates 75 by winding or the like.

The tip portions of the terminal plates 75 are connected to the second flat plate portions 73b, 74b of the coil connection terminals 73, 74 by spot welding or the like.
The coil connection terminals 73 and 74 and each terminal plate 75.
Before the vibration welding of the second resin molding 66 to the first resin molding 65, the bobbins 42, which are spring-biased by the springs 45 toward the side in contact with the cover 21, are connected to the first resin molding 6.
5 while being in contact with the receiving portions 68.

Thus, the first resin molded body 65 of the cover 21 has first flat plate portions 73a, 7a, 7b, which protrude into the openings 67a of the coil connection terminals 73, 74,.
A plurality of ribs 76 are formed integrally with each other to support 4a... From the respective solenoid portions 5b.

Each bus bar 71 _O1 to 71 _O4 , 71 _C1 to
The other _{ends of} 71 _C4 , 72 are exposed and juxtaposed on the surface of first resin molded body 65 at a position adjacent to substrate 70 fastened to first resin molded body 65. Thus, the electric circuit on the substrate 70 and the bus bars 71 _{O1 to} 71 _O4 , 71 _{C1 to} 71 _C4 ,
72 is electrically connected to one end by bonding of an aluminum wire or the like.

Incidentally, at the time of molding the first resin molded body 65 made of synthetic resin, the individual bus bars 71 _{O1 to} 71 _O4 , 7
1 _{C1 to} 71 _C4 and the common bus bar 72 are formed by first resin molding except for the coil connection terminals 73, 74, and the other end of one end of the bus bars 71 _{O1 to} 71 _O4 , 71 _{C1 to} 71 _C4 , 72. The individual bus bars 71 _{O1 to} 71 _O4 , 71 _{C1 to} 71 _C4, and the common bus bar 72 are buried in the body 65, as shown in FIG. It is prepared as a bus bar assembly 77 having a shape.

That is, the coil connection terminal 73 is provided at one end.
, 74 provided with individual bus bars 71 _{O1 to} 71 _O4 , 7
1 _{C1 to} 71 _C4 and the other end of the common bus bar 72 are connected to each other by a connection plate portion 78, and the individual bus bar 71
_O1 -71 _O4, an intermediate portion of the 71 _C1 -71 _C4 and the common bus bar 72 is the bus bar assembly 77 in a shape formed by interconnected are formed by the connecting plate 79.

Such a bus bar assembly 77 is used to form the first resin molded body 65 in a state where the connection by the connecting plate portion 78 is released by cutting along the cutting line indicated by the chain line 85 in FIG. Is positioned in the mold apparatus.

Individual bus bar 71_O1~ 71_O4, 71_C1~ 7
1_C4And the common bus bar 72 are integrally molded
The busbar assembly is attached to the first resin molded body 65 to be molded.
Individual bus bar 71 by connecting plate portion 79 in body 77_O1
~ 71_O4, 71_C1~ 71_C4And a row of common busbars 72
Hitting at a plurality of places (eight places in this embodiment)
.. Are formed with the first resin molding.
After forming the body 65, the punching holes 86, 86,.
The connecting plate 79 is punched out by a cutting tool (not shown),
As a result, the individual bus bars 71 in the first resin molded body 65_O1
~ 71_O4, 71 _C1~ 71_C4And the common bus bar 72
They will be arranged independently of each other.

The cover 21 is integrally formed with a protruding portion 21a that protrudes from the housing 20 to the side, and a male connector 80 is provided on the protruding portion 21a.

The connector 80 has a first resin molded body 65
A connector housing 81 formed in a box shape integrally with a portion corresponding to the protruding portion 21 a, and a plurality of connector housings which are mostly embedded in the first resin molded body 65 so that one end faces the inside of the connector housing 81. Book connector terminals 82 ...
The other ends of the connector terminals 82 are arranged side by side on the surface of the first resin molded body 65 at positions adjacent to the substrate 70 fastened to the first resin molded body 65. , The electric circuit on the substrate 70 and the connector terminals 82
Are electrically connected to each other by bonding of aluminum wires or the like.

Further, a pair of motor terminals 83 and 84 having one end exposed on the surface of the first resin molded body 65 at a position adjacent to the substrate 70 fastened to the first resin molded body 65 is formed. 65 and these motor terminals 8
One end of each of the terminals 3 and 84 is electrically connected to an electric circuit on the substrate 70 by bonding of an aluminum wire, and the other end of each of the motor terminals 83 and 84 is connected to the electric motor 12.

Further, according to the present invention, the first resin molding 6
Each of the individual bus bars 7 is provided on the surface of the
1 _{O1 to} 71 _O4 , 71 _{C1 to} 71 _C4 and common bus bar 72
A plurality (9 in this embodiment) facing the intermediate portion of
Number) window 88, 88 ... is, the magnetic path frame 44 at the solenoid portion 5b of the normally open electromagnetic valve 5 ₁ to 5 ₄ ..., and the magnetic path frame in the normally closed electromagnetic valves 6 _1, 6 ₄ of the solenoid portion 6b 4
4.

In this embodiment, each of the windows 88, 88,.
Each individual bus bar 71 at the corresponding position _O1~ 71_O4, 71_C1
~ 71_C4And the middle part of the common bus bar 72
An opening facing the opposite side to 20 is formed,
This opening may be omitted.

[0064] Next, to explain the action of this embodiment, the valve portion 5a ..., normally open electromagnetic valve 5 ₁ to 5 ₄ and the normally closed electromagnetic valve 6a ... are accommodated in the housing 20 6 _{1-6 4}
, 6b are housed in the housing 20 and a storage chamber 63 formed between the cover 21 fastened to the housing 20, and the bobbins 42 provided in the solenoid parts 5b, 6b,. Can move in a limited range in the axial direction. Also the cover 21
Are partially projected from the first resin molded body 65 into the openings 67a.
, 74 ... are supported by the first resin molded body 65, and connected to both ends of each coil 43 ... respectively, and each bobbin 42 ...
Are connected to the coil connecting terminals 73... 74 by spot welding or the like.

Therefore, the bobbins 42...
Vibrates, a bending force acts on the coil connection terminals 73, 74,. Moreover, in order to improve the connection workability of the terminal plates 75 and the coil connection terminals 73 and 74, the projecting amounts of the coil connection terminals 73 and 74 from the cover 21 need to be set relatively large. Yes,
In this case, the vibration of the bobbins 42 makes the coil connection terminals 73, 74 ... easily bendable.

However, each terminal plate 75 is connected to the spring 45.
Each of the coil connection terminals 73... 74 is brought into contact with the bobbin 42. …It is connected to the. Therefore, the movement of the bobbin 42 in the direction away from the housing 20 is restricted by the bobbin abutting on the receiving portion 68 of the cover 21, and the vibration of the bobbin 42 causes the coil connection terminals 73,. Only the bending force on the side close to the housing 20 acts on 74.

Moreover, the first flat plate portions 73a, which are projecting portions of the coil connection terminals 73, 74,.
A plurality of ribs 76 for supporting the first resin molded body 6a of the cover 21 are provided.
5 are integrally formed. Accordingly, the bobbin 42... And the coil connection terminals 73.
Can be reinforced by the ribs 76 so as to withstand the bending force acting on the housing 20 toward the housing 20. The projecting amounts of the coil connection terminals 73, 74,. Can be prevented from being bent, and the bobbins 42 due to the bending of the coil connection terminals 73, 74 ... can be prevented.
Of avoiding the inclination from occurring, the solenoid valves 5 ₁ to 5 _4, 6
It is possible to maintain the desired performance in _{1-6 4.}

The first resin molded body 6 on the cover 21
The first resin molded body 65 is provided on the surface facing the housing 20 side of the first resin molded body 65.
Bus bars 71 _{O1 to} 71 _O4 , 71 _{C1 to} 7 buried in
A plurality of windows 88, 88... Respectively facing the intermediate portion of 1 _C4 and the common bus bar 72 are provided in each of the solenoid portions 5b.
are provided so as to avoid the magnetic path frames 44 in b. Therefore, the individual bus bars 71 _{O1 to} 71 _O4 , 71
The cover 2 in a state where the coils 43... And the electronic control unit 16 are connected to _{C1 to} 71 _C4 and the common bus bar 72.
.. Are not fastened to the housing 20, and a pair of windows 88, 88 corresponding to the individual bus bar and the common bus bar corresponding to the coil 43 among the windows 88, 88.
The individual bus bar 71 _O1 is selected by selecting and conducting or blocking the individual bus bar and the common bus bar facing the windows 88 and 88 and detecting the current flowing between the two bus bars.
７１71 _O4 , 71 _C1 ７１71 _C4 and whether the common bus bar 72 and the coil 43 are connected normally without disconnection,
In addition, it can be confirmed whether or not a normal electric signal is output from the electronic control unit 16. As a result, the electromagnetic valves by the electronic control unit 16 5 ₁ to 5 _4,
Whether ₆₁ through _fourth operation switching control to function properly,
Before the cover 21 is fastened to the housing 20, it is possible to surely and efficiently check it.

Further, the cover 21 is provided with the individual bus bar 71 _O1
And ~71 _O4, 71 _C1 ~71 _C4 and the common bus bar 72 first resin molded body 65 in which the electronic control unit 16 is attached with is embedded, is coupled to the first resin molded body 65 covers the electronic control unit 16 The windows 88, 88 are formed in the first resin molded body 65. Therefore, even in the brake fluid pressure control apparatus that the electronic control unit 16 in the cover 21 are housed, each of the solenoid valves by the electronic control unit 16 5 ₁ to 5
_4, 6 ₁ well 6 ₄ actuation switching control it is possible to reliably confirm and efficiently to confirm whether to work properly, each individual bus bars 71 _O1 ~71 _O4, 71 _C1 ~
The electronic control unit 16 is connected to 71 _C4 and the common bus bar 72.
And each coil 43 is not connected, and the second
In the first resin molded body 65 that is not coupled to the resin molded body 66, the first resin molded body 65 is buried in the first resin molded body 65 by detecting conduction / cutoff between the bus bars facing the selected pair of windows 88. Bus bars 71 _{O1 to} 71 _O4 , 7
1 _C1 -71 _C4, it is possible to inspect the bus bar 72 mutual short.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the appended claims. It is possible to do.

[0071]

As described above, according to the first aspect of the present invention, whether or not the operation switching control of each solenoid valve by the electronic control unit functions normally is confirmed before the cover is fastened to the housing. And it can be confirmed efficiently.

According to the second aspect of the present invention, even in the brake fluid pressure control device in which the electronic control unit is housed in the cover, whether or not the operation switching control of each solenoid valve by the electronic control unit functions normally. Not only can be surely and efficiently checked, but also short-circuits between the bus bars embedded in the first resin molded body can be inspected using the respective windows.

[Brief description of the drawings]

FIG. 1 is a brake hydraulic circuit diagram of a brake device for a passenger vehicle.

FIG. 2 is a partially cutaway side view of the brake fluid pressure control device.

FIG. 3 is a view as viewed in the direction of arrow 3 in FIG. 2;

FIG. 4 is a view taken in the direction of arrow 4 in FIG. 2;

FIG. 5 is an enlarged sectional view taken along line 5-5 of FIG. 3;

FIG. 6 is a perspective view of a magnetic path frame.

FIG. 7 is a view of the first molded body of the cover as viewed from the direction of arrows 7-7 in FIG.

FIG. 8 is a rear view of the first molded body of FIG. 7;

FIG. 9 is a front view of the bus bar assembly.

[Explanation of symbols]

5 _1, 5 _2, 5 _3, 5 ₄ ... normally open solenoid valves 5a, 6a ... valve portion 5b, 6b ... solenoid section 6 ₁ and 6 _2, 6 _3, 6 ₄ ··· normal closed electromagnetic valves _81, 82 ... reservoir 20 ... housing 21 ... cover 43 ... coil 65 ... first resin molded body 66 ... second resin molded body 71 _O1 -71 _O4, 71 _{C1 ~71 C4} ··· individual bus bar 72 ... common bus bar 88 ... window _{B 1, B 2, B 3} , B 4 ··· wheel brakes M ... master cylinder

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Naoki Obuse 840, Kokubu, Ueda-shi, Nagano F-term (reference) 3D046 BB28 CC02 LL00 LL23

Claims (2)

[Claims] 1. A master cylinder (M) and a wheel brake
Ki (B₁, B_Two, B _Three, B_Four) Normally open type electricity interposed between
Magnetic valve (5₁, 5_Two, 5_Three, 5_Four) Valve part (5a),
And the wheel brake (B₁~ B_Four) And reservoir
(8₁, 8_Two) Normally closed solenoid valve (6)₁, 6
_Two, 6_Three, 6_Four) Valve section (6a) is the housing (20)
And each normally open solenoid valve (5₁~ 5_Four)and
Each normally closed solenoid valve (6₁~ 6_Four) Solenoid part (5b,
6b) each having a coil (43)
(20), each coil (43)
Multiple individual bars, one end of which is individually connected to one end of
Subur (71_O1~ 71_O4, 71_C1~ 71_C4) And before
A single common terminal commonly connected to the other end of each coil (43).
The communication bus bar (72) is connected to each of the solenoids (5b, 6).
b) a composite which is fastened to said housing (20) over
Each of the individual bus bars is embedded in a resin cover (21).
ー (71_O1~ 71_O4, 71_C1~ 71_C4) And common bus
Electronic control unit (16) is connected to the other end of bar (72)
In the vehicle brake fluid pressure control apparatus, the cover
-(21) on the surface facing the housing (20) side,
Each individual bus bar (71_O1~ 71_O4, 71_C1~ 71_C4)
And the middle part of the common busbar (72)
A plurality of windows (88) are provided with the respective solenoid portions (5b, 6).
a vehicle characterized by being provided so as to avoid the arrangement position of b)
Dual-use brake fluid pressure control device. 2. The method according to claim 1, wherein the cover is provided with the individual buses.
Bar (71_O1~ 71 _O4, 71_C1~ 71_C4) And common ba
A subbar (72) is embedded and the electronic control unit is
The first resin molded body (65) to which the slot (16) is attached
And a first resin molded body covering the electronic control unit (16).
(65) and a second resin molded body (66) coupled to the second resin molded body (66).
The windows (88) are formed in the first resin molded body (65).
The vehicular brake according to claim 1, wherein the vehicular brake is formed.
Hydraulic pressure control device.