JP3089445B2 - Anti-lock brake control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a plurality of normally-open solenoid valves interposed between a master cylinder and a plurality of wheel brakes, and a piston having one end facing the storage chamber to increase the volume of the storage chamber. A reservoir which is spring-biased to the contracting side, and a plurality of normally closed solenoid valves interposed between the plurality of wheel brakes and the storage chamber of the reservoir are disposed on a common base, and The present invention relates to an antilock brake control device in which a motor connected to a return pump having a suction port connected to a storage chamber is attached to the base.

[0002]

2. Description of the Related Art Conventionally, such an apparatus is disclosed in, for example,
It is already known from, for example, JP-A-231253.

[0003]

In the above-mentioned conventional reservoir, a piston provided with a spring between the recess and the closed end of the recess is slidably fitted into the recess. The valve housing of the normally closed solenoid valve is fitted and fixed, and a storage chamber is formed between the piston and the valve housing. The maximum volume of the storage chamber is fixed. However, there is a demand to change the maximum volume of the storage chamber, that is, the maximum amount of hydraulic oil that can be discharged from the wheel brake during antilock control, according to the type of vehicle. However, in order to change the volume of the storage chamber, the length of the concave portion in the axial direction must be changed, and a different base must be prepared for each vehicle type.

The present invention has been made in view of the above circumstances, and has as its object to provide an anti-lock brake control device capable of easily changing the maximum volume of a storage chamber in a reservoir with the same type of base. And

[0005]

In order to achieve the above object, the invention according to claim 1 comprises a plurality of normally open solenoid valves interposed between a master cylinder and a plurality of wheel brakes, respectively, and a storage chamber. A reservoir having a piston whose one end face faces toward the side for reducing the volume of the storage chamber, and a plurality of normally-closed electromagnetic devices interposed between the plurality of wheel brakes and the storage chamber of the reservoir, respectively. A valve is disposed on a common base, and a motor connected to a return pump having a suction port connected to the reservoir of the reservoir is mounted on the base. An open recess and a passage communicating with the suction port of the return pump and opening to the inner end of the recess are provided, and the reservoir is fitted and fixed to the recess, and has a bottomed cylindrical reservoir forming member, Previous A piston which is formed between the inner end of the recess and a storage chamber communicating with the passage, and which is slidably fitted to the reservoir forming member; and a spring which is contracted between the piston and the closed end of the reservoir forming member. It is characterized by comprising.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the motor is provided with a flange fastened to an outer surface of the base, and the reservoir forming member includes the base and the base. It is sandwiched between the flanges.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an anti-lock brake device for a four-wheel vehicle will be described below with reference to the drawings.

FIGS. 1 to 9 show an embodiment of the present invention. FIG. 1 is a hydraulic circuit diagram of an antilock brake device for a vehicle, and FIG. 2 is a longitudinal sectional side view of an antilock brake control device. 3 is an enlarged sectional view taken along line 2-2 of FIG. 3, FIG. 3 is an enlarged sectional view taken along line 3-3 of FIG. 2, FIG. 4 is an enlarged longitudinal sectional view of a normally-open solenoid valve, and FIG. FIG. 6 is an enlarged longitudinal sectional view, FIG. 6 is a longitudinal sectional side view of the antilock brake control device before assembly,
7 is a cross-sectional view of the base taken along line 7-7 in FIG. 2, FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 2, and FIG. 9 is a cross-sectional view taken along line 9-9 in FIG.

First, in FIG. 1, a tandem type master cylinder M is provided with a pair of output ports 12 and 13 for outputting a brake fluid pressure in accordance with depression of a brake pedal 11, a left front wheel brake B _FL and a right rear wheel. A proportional pressure reducing valve 14 _R connected to the brake B _RR , a right front wheel brake B _FR , and a proportional pressure reducing valve 14 _L connected to the left rear wheel brake B _RL ;
An anti-lock brake control device 15 is interposed between the two output ports 12 and 13.

This anti-lock brake control device 15
Is the left front wheel brake B_FL, Right rear wheel brake B_RR, Right front wheel
Brake B_FRAnd left rear wheel brake B_RLIndividually
4 normally open solenoid valves V_OFL, V_ORR, V_OFR, V_ORL
And each normally open solenoid valve V_OFL~ V _ORLConnected in parallel to
Four check valves 17 continued_FL, 17_RR, 17_FR, 1
7_RLAnd each wheel brake B_FL~ B_RLIndividually
Four normally closed solenoid valves V _CFL, V_CRR, V_CFR, V_CRL
And left front wheel brake B_FLAnd right rear wheel brake B _RRSide
Right front wheel brake B_FRAnd left rear wheel brake B_RL~ side
A pair of reservoirs 19 respectively corresponding to₁, 19
_TwoAnd both reservoirs 19₁, 19_TwoSuction valve 20₁, 20
_TwoPair of return pumps 21 connected via₁, 21_Two
And double return pump 21₁, 21_TwoMotor 22 common to
And double return pump 21₁, 21_TwoDischarge valve 23₁, 23
_TwoOf dampers 24 connected via₁, 24_TwoWhen,
The output ports 12, 13 of the master cylinder M and
Note damper 24₁, 24_TwoOrients interposed between each
Fiss 25₁, 25_TwoAnd

The _normally open solenoid valve V _OFL is connected to the master cylinder M
The _normally open solenoid valve V _ORR is interposed between one of the output ports 12 and the left front wheel brake B _FL.
And a proportional pressure reducing valve 14 _R connected to the right rear wheel brake B _{RR. The normally} open solenoid valve V _OFR is connected between the other output port 13 of the master cylinder M and the right front wheel brake B _FR . The normally open solenoid valve V _ORL is provided between the output port 13 and the proportional pressure reducing valve 14 connected to the left rear wheel brake _BRL.
It is interposed between _L. Check valves 17 _{FL to} 17 _RL
Are normally open solenoid valves V _{OFL to} V _OFL to allow only the flow of hydraulic fluid from the corresponding wheel brakes B _{FL to} B _RL.
Connected in parallel to _ORL .

The normally closed solenoid valve V _CFL is a left front wheel brake B _FL.
And between the reservoir 19 _1, the normally closed electromagnetic valve V _CRR Between proportional pressure reducing valve 14 _R and the reservoir 19 _1, the normally closed electromagnetic valve V _{CF R} is between the right front wheel brake B _FR and the reservoir 19 _2, also normal closed electromagnetic valve V _CRL are interposed respectively between the proportional pressure reducing valve 14 _L and the reservoir 19 _2.

[0013] Such an anti-lock brake control device
According to No. 15, there is no possibility that each wheel may be locked.
During normal braking, each normally open solenoid valve V_OFL~ V_ORLDisappears
The valve is open in the magnetic state, and each normally closed solenoid valve V
_CFL~ V_CRLIs in the demagnetized state and is closed. But
Output from one output port 12 of master cylinder M
The brake fluid pressure to be applied is the normally open solenoid valve V_OFLThrough the left front wheel
Brake B_FLNormally open solenoid valve V_ORRYou
And proportional pressure reducing valve 14_RVia the right rear wheel brake B _RRMade in
The other output port 13 of the master cylinder M
The braking fluid pressure output from the_OFRThrough
Right front wheel brake B_FRNormally open solenoid valve V
_ORLAnd proportional pressure reducing valve 14_LVia rear left wheel brake B
_RLAct on.

At the time of anti-lock control when a wheel is about to enter a locked state during braking, a normally-open solenoid valve corresponding to a wheel that is about to enter a locked state among _normally- open solenoid valves V _{OFL to} V _ORL. , And the normally closed solenoid valve corresponding to the wheel among the normally closed solenoid valves V _{CFL to} V _CRL is excited to open. Then, a part of the brake hydraulic pressure is reduced is released to the reservoir 19 ₁ or 19 _2. When the brake fluid pressure is maintained, the normally-open solenoid valves V _{OFL to} V _ORL are excited to close the valve, and the normally-closed solenoid valves V _{CFL to} V _CRL are demagnetized to maintain the closed state. Often, when increasing the brake fluid pressure, the normally open solenoid valves V _{OFL to} V _ORL are demagnetized and opened, and the normally closed solenoid valves V _{CFL to} V _CRL are demagnetized and kept closed. I just need.

The motor 22, which drives the pair of return pumps 21 ₁ and 21 ₂ in common, is operated at the time of the above-described antilock control, and the reservoirs 19 ₁ and 19 2 are operated.
Pump 21 ₁ hydraulic fluid is released to ₂ return damper 24 ₁ to 21 _2, 24 ₂ and the orifices 25 _1, 25 _2
Are returned to the upstream side of the _normally open solenoid valves V _{OFL to} V _ORL . Thus reservoir 19 _1, 19 ₂ rather than the amount of depression of the brake pedal 11 in an amount corresponding master cylinder M which relief is increased, moreover the return pump 21 _1,
Pulsations of the hydraulic fluid delivered from the 21 ₂ damper 24 _1, 2
4 ₂ and attenuated by the function of the orifice 25 _1, 25 _2, pulsation to the brake pedal 11 will not be transmitted.

The demagnetization / excitation of each of the normally open solenoid valves V _{OFL to} V _ORL and each of the normally closed solenoid valves V _{CFL to} V _CRL is controlled by an electronic control unit (hereinafter referred to as ECU) 26. The ECU 26 includes wheel speed sensors 27 _FL , 27 _RR , 27 which individually detect the wheel speed of each wheel to determine whether the wheel is about to enter the locked state.
A detection signal of _FR , 27 _RL is inputted, and a detection signal of a handbrake detection sensor 29 for detecting whether the handbrake lever 28 is operated is inputted. Further, when the antilock control state is established, the ECU 26 activates the signal. An alarm 30 such as a lamp to be operated is connected to the ECU 26.

2 and 3, the anti-lock brake control device 15 includes a metal base 34 formed in a block shape. The base 34 includes four _normally- open solenoid valves V _OFL , V _ORR , V _OFR , V _ORL are arranged in parallel, and four normally closed solenoid valves V _CFL ,
V _CRR , V _CFR , and V _{CRL correspond} to the _normally- open solenoid valves V _OFL to V _OFL .
The V _ORLs are arranged in parallel in the arrangement direction.

Each normally open solenoid valve V _OFL , V _ORR , V _OFR ,
V _ORL has basically the same configuration, and the normally closed solenoid valves V _CFL , V _CRR , V _CFR , and V _CRL have basically the same configuration. Type solenoid valve V
_OFL , V _ORR , V _OFR , and V _ORL are controlled by a normally open solenoid valve V _OFL , and a normally closed solenoid valve V _CFL , V _CRR , V _CF
The detailed configuration of _R and V _CRL will be described using a normally closed solenoid valve V _CFL .

In FIG. 4, a normally open solenoid valve V _OFL has a bottomed cylindrical guide cylinder 35 _{O having} a base end provided with a valve housing 36 _O.
A housing 37 _O comprising been continuously to the guide tube 35 _O
A fixed core 38 _O fixed to the base end side of the
In a direction away from the _O spring biased movable core 39 is accommodated in the guide tube 35 _{of O,} provided continuously in the movable core 39 as possible the seating of the valve seat 40 provided in the valve housing 37 _O a valve body 41, a coil 43 which is wound around the bobbin 42 surrounding the guide tube 35 _O, and a yoke 44 that magnetically couples the ends of the guide tube 35 _O over a portion of the coil 43 Prepare.

The valve housing 36 _O is formed by caulking a bottomed cylindrical body 45 made of magnetic metal and a valve housing main body 46 _O partially fitted into the bottomed cylindrical body 45. And its outer surface is formed in a stepped cylindrical shape. Further, a valve chamber 47 is formed between the valve housing main body 46 _O and the bottomed cylindrical body 45. Further, the guide cylinder 35 _O is formed from a magnetic metal through a non-magnetic part 48 formed of a non-magnetic material into a cylindrical part 45 b provided integrally with the bottomed cylindrical body 45 via a step part 45 a. The bottomed cylindrical portion 49 is coaxially connected. Accordingly housing 37 _O is the proximal end of the guide tube 35 _O is that formed by coaxially connected to via the stepped portion 45a in the valve housing 36 _O.

The valve housing 36_OIs one of the substrates 34
Fitting recess 50 provided on surface 34a _OThe step 45
so that a is substantially flush with one surface 34a of the base 34.
Mated. This fitting recess 50_OIs the valve housing 36
_OLarge-diameter part 50 into which the bottomed cylindrical body 45 is fitted_OAAnd valve c
The main subject 46_OSmall diameter part 50 for fitting_OBAnd steps
A cylindrical body with a bottom
45 has a large diameter portion 50 on the outer surface._OARing that makes elastic contact with the inner surface of
Of the large diameter portion 50_OAof
An annular filter 52 interposed between the filter and the inner surface is attached.
And the valve housing body 46_OSmall diameter part 50 on the outer surface of_OBof
An annular sealing member 53 that resiliently contacts the outer surface _OIs installed
You.

On the other hand, the base 34 is provided with a passage 54 that opens at a position eccentric to the inner end closing portion of the fitting recess 50 _O , and coaxial passages 55 and 56 that communicate with the valve chamber 47 via the filter 52. .

The valve housing body 46 _O has a valve chamber 4
7 and a cylindrical valve seat member 58 having a valve hole 57 opening at the center of the valve seat 40.
When, and a diaphragm member 59 that leads to the valve hole 57 fitting, is fixed, the filter 60 _O interposed between the throttle member 59 and the passage 54 is mounted. Check valve 1
7 _FL is a valve seat member 5 between the valve chamber 47 and filter 60 _O
8 and the valve housing main body 4 in parallel with the throttle member 59.
Located at 6 _O.

The fixed core 38 _O is fitted and fixed to the end of the guide cylinder 35 _{O on} the valve housing 36 _O side. In the valve chamber 47, the bottomed cylindrical body 45 and the valve housing main body 46 _O
A bearing member 61 is sandwiched between them, and a bearing member 62 is fitted and fixed to the distal end side of the guide cylinder 35 _O, that is, the bottomed cylindrical portion 49. The movable core 39 is axially movably accommodated in opposite to the stationary core 38 _O guide tube 35 _O. A rod 63 _O is coaxially fixed to the movable core 39 and penetrates the fixed core 38 _O coaxially and movably in the axial direction and both ends are slidably supported by bearing members 61 and 62.
A rod 63 _O is provided between the fixed core 38 _O and the movable core 39.
The spring 64 which surrounds the the compressed state, the movable core 39 by the spring 64 is spring-biased in a direction away from the fixed core 38 _O. The hemispherical valve element 41 that can be seated on the valve seat 40 is provided at one end of the rod 63 _O within the valve chamber 47. Moreover, the movable core 39 has a flow hole 6 for allowing the flow of the hydraulic fluid.
5 is drilled over the entire axial length.

By the way, the housing 37 _O in the state in which fitted the valve housing 36 _O into the mating recess 50 _O, all normally open electromagnetic valves V _OFL ~V _ORL and all normally closed electromagnetic valve V _{CF L} The substrate 66 common to the V _CRL is placed on one surface 34 of the base 34.
By being fastened to a, it is fixed to the base 34. The substrate 66 is formed of a rigid magnetic metal into a rectangular flat plate shape, and is fastened to one surface 34a of the base 34 by a plurality of, for example, eight bolts 68. Moreover the substrate 66, the normally open electromagnetic valve V _{OF L} ~V
_ORL guide cylinder 35 _O … and normally closed solenoid valve V _CFL
.. V _CRL are provided with eight insertion holes 67 through which guide cylinders 35 _C (see FIG. 5) are inserted.
_{By O,} 35 through holes 67 ... in the substrate 66 are inserted respectively to the corresponding _C is secured to one surface 34a of the base 34 abuts against the step portion 45a of the housing 37 _O, housing 37 _O is the base 34 fixed, the guide tube 35 _O of the housing 37 _O in the state protruded from the substrate 66.

The bobbin 42 is mounted on the substrate 66 of the guide cylinder 35 _O.
And is formed of a synthetic resin in a cylindrical shape surrounding the protruding portion from the coil.
Is wound.

The yoke 44 is provided with all the normally open solenoid valves V _OFL
To V _ORL , a contact plate portion 44a that contacts the bobbin 42 of each of the normally-open solenoid valves V _{OFL to} V _{ORL on} the opposite side of the substrate 66, and an outer edge of the contact plate portion 44a. A support plate portion 44b having one end connected at a right angle and a mounting plate portion 44c connected to the other end of the support plate portion 44b at a right angle so as to extend to the opposite side to the contact plate portion 44a. The mounting plate portion 44c has a pair of screw members 7
Attached to the substrate 66 by 0,70. With the yoke 44 attached to the board 66, the bobbins 22 of the _normally- open solenoid valves V _{OFL to} V _ORL are mounted on the board 66 and the yoke 4.
4 between the contact plate portions 44a.

Moreover, the contact plate portion 44a of the yoke 44 has
Hole 71 through which the tip of each guide cylinder 35 _O , 35 _C is inserted
Are provided, and notches 72 connected to the holes 71 are provided. A pair of connection terminals 73, 73 connected to the coil 43 and protruding from the bobbin 42 are arranged in the notches 72. Is done.

The normally closed electromagnetic valve V _CFL ~V _CRL is a number of its components is intended to be identical to the normally open electromagnetic valves V _OFL ~V _ORL, normally open electromagnetic valves V _OFL ~ The same components as those of V _ORL are _denoted by the same reference numerals, and the configuration of the normally closed solenoid valve V _CFL will be described below.

In FIG. 5, the normally closed solenoid valve V _CFL has a bottomed cylindrical guide cylinder 35 _C whose base end is a valve housing 36 _C.
A housing 37 _C composed are continuously provided, the guide tube 35 _C
A fixed core 38 _C fixed to the base end side of the
A movable core 39 which is housed a spring urged into the guide tube 35 _C in a direction away from _C, is continuously provided to the movable core 39 as possible the seating of the valve seat 40 provided in the valve housing 37 _C a valve body 41, a coil 43 which is wound around the bobbin 42 surrounding the guide tube 35 _C, and a yoke 44 that magnetically couples the ends of the guide tube 35 _C over a portion of the coil 43 Prepare.

The valve housing 36 _C has a bottomed cylindrical body 45.
And a valve housing main body 46 _C partially fitted in the bottomed cylindrical body 45, and are formed by caulking, and the outer surface thereof is formed in a stepped cylindrical shape. The guide tube 35 _C is a cylindrical portion 45b provided in the bottomed cylindrical body 45, via the non-magnetic portion 48 formed into a cylindrical shape by a non-magnetic material, which fixed core 38 _C is formed by continuously provided , and the housing 37 _C, the proximal end of the guide tube 35 _C is that formed by coaxially connected to via the stepped portion 45a in the valve housing 36 _C.

The valve housing 36_CIs one of the substrates 34
Fitting recess 50 provided on surface 34a _CThe step 45
so that a is substantially flush with one surface 34a of the base 34.
The fitting recess 50 is fitted_CIs the valve housing 36_Cof
Large-diameter portion 50 into which bottomed cylindrical body 45 is fitted_CAAnd valve house
Main body 46_CSmall diameter part 50 for fitting_CBAnd through the step
And are provided coaxially. On the outer surface of the bottomed cylinder 45
Large diameter part 50_CAAnnular sealing member 5 which resiliently contacts the inner surface of
1 is mounted, the bottomed cylindrical body 45 and the valve
The valve chamber 47 formed between the jing bodies 46c and the communication
An annular filter 52 interposed between the paths 56 is mounted,
Valve housing main body 46_CSmall diameter part 50 on the outer surface of_CBOutside
Annular sealing member 53 which resiliently comes into contact with_CIs attached.

[0033] The valve housing main 46 _C, a valve seat member 58 having valve seat 40 and the valve hole 57 in the valve chamber 47, and the diaphragm member 59 that leads to the valve hole 57 fitting, is fixed, the fitting A filter 60 _C interposed between a passage 74 provided eccentrically at the closed end of the recess 50 _C and the throttle member 59.
Is attached.

The movable core 39 having the flow hole 65 is fixed.
Core 38_CGuide cylinder 35 facing _CCan be moved in the axial direction
The movable core 39 has a fixed core at one end.
38 _CAnd the other end is
Rod 63 supported by bearing member 61 so as to be movable in the axial direction.
_CAre fixed coaxially, and the fixed core 38_CAnd movable core 3
Rod 63 between 9_CA spring 64 surrounding the
You. The movable core 39 is fixed to the fixed core 38 by the spring 64._C
From the valve chamber 47
63_CHas a hemispherical valve element 41 that can be seated on the valve seat 40.
Provided.

Such a normally closed solenoid valve V_CFL~ V_CRLof
Housing 37_CIs the normally open solenoid valve V_OFL~ V_ORL
Housing 37_OIn the same manner as described above, the substrate 66 is
Is fixed to the base 34 by being fastened to the one surface 34a.
In this state, the housing 37 _CGuide cylinder 35_CIs the base
It protrudes from the plate 66.

The bobbin 42 which surrounds the projecting portion of the guide tube 35 _C of the substrate 66, the normally open electromagnetic valves V _OFL ~V
The yoke 44 having the same shape as the yoke 44 on the _ORL side is _attached to the substrate 66. That is, all normally closed solenoid valves V
_A coil 43 is wound around the bobbin 42 between the abutting plate 44a of the yoke 44 and the substrate 66, which is mounted on the substrate 66 in common with the _{CFL to} V _CRL .

Referring also to FIG. 6, all the normally open solenoid valves V _{OFL to} V _ORL and all the normally closed solenoid valves V _{CFL to} V _CFL.
A coil 43 of the _CRL , a bobbin 42 around which each coil 43 is wound, and a pair of yokes 44
Are assembled to a substrate 66 to constitute a coil assembly unit 75. The coil assembly unit 75 is attached to the base 34 by fastening the substrate 66 to one surface 34a of the base 34. Moreover the time to fastened the one surface 34a, the guide tube 35 _O and the normally closed electromagnetic valves V _CFL ~V in the normally open electromagnetic valves V _OFL ~V _{OR L} of the substrate 66
The guide cylinder 35 _O in the _CRL is inserted into the bobbins 42 and the holes 71 from the respective insertion holes 67.

The coil assembling unit 75 has a cover 76 made of synthetic resin which covers the bobbins 42 around which the coil 43 is wound and the yokes 44, 44. The cover 76 is attached to the substrate 66. This cover 76
Is a side wall portion 76a formed in a square shape with one end abutting on the substrate 66, a closing plate portion 76b for closing the other end of the side wall portion 76a, and normally open solenoid valves V _{OF to} V _ORL. And the side wall plate 7 at the center between the normally closed solenoid valves V _{CFL and} V _CRL.
6a are formed in a box shape with a connecting plate portion 76c connecting one end of the connecting plate portion 6a, and the connecting plate portion 76a and the closing plate portion 7 are formed.
6b, cylindrical bosses 78, 78 for inserting a pair of screw members 77, 77 for fastening the cover 76 to the substrate 66 are provided. A pair of bolts 68 for fastening the substrate 66 to the one surface 34a of the base 34 is provided between the closing plate portion and the connecting plate portion 76b of the cover 76.
Cylindrical parts 79, 79 through which 68 are inserted are provided with both ends open.

The side wall 76a of the cover 76 has
A pair of couplers individually corresponding to the four normally open electromagnetic valves V _OFL ~V _ORL and four normally closed electromagnetic valves V _C 80, 80
Are fixedly provided, and these couplers 80,
80 are provided with a plurality of connection terminals 81, 81... Connected to the connection terminals 73, 73. Therefore, with the cover 76 attached to the substrate 66, the coils 43 are connected to the connection terminals 8 of the couplers 80, 80.
1, 81... Are connected.

Referring to FIG. 7, FIG. 8 and FIG.
The base 34, with the normally open electromagnetic valve V _{OF L} ~V _ORL housing 37 _O ... 4 one of the fitting recess 50 to the valve housing 36 _O ... the respectively fitted in the _O ... it is provided in parallel, each The four fitting recesses 50 _C for fitting the valve housings 36 _C in the housings 37 _{C of the} normally closed solenoid valves V _{CFL to} V _CRL are respectively provided with the fitting recesses 50.
_O ... are arranged side by side in the arrangement direction,
One surface 34 of the base 34 is located on the outer side of the arrangement position of _O.
a, a pair of recesses 83 ₁ , 83 ₂ are provided on the outer side of the arrangement of the fitting recesses 50 _C.
The coil assembly unit 75 of the pair of recesses 84 ₁ which opens to the outer surface 34b on the opposite side, 84 ₂ are provided.

The base 34 has a pair of input ports 85 ₁ and 85 ₂ individually connected to a pair of output ports 12 and 13 (see FIG. 1) of the master cylinder M, and an input port 85 _1.
The normally open electromagnetic valves V _OFL, a passage 86 ₁ providing communication in the passage 54 of the V _ORR, an input port 85 _{and second} normally open electromagnetic valves V _OFR, is a passage 86 ₂ providing communication in the passage 54 of the V _ORL provided . Also on one side of the base 34, the wheel brakes _{B FL, B RR, B FR} , and connected thereto an output port _{87 FL, 87 RR, 87 FR} , 87 RL are provided separately for B _RL,
The output ports 87 _{FL to} 87 _RL are each normally open solenoid valve V
_Are individually _communicated with passages 55... Of _{OFL to} V _ORL . Further, the base 74 has a passage 74 for the normally closed solenoid valves V _CFL and V _CRR .
A passage 88 ₁ leading to the normally closed electromagnetic valves V _CFR, and a passageway 88 ₂ leading to V _CRL passage 74 is provided.

The dampers 24 ₁ , 24 ₂ are respectively formed by recesses 83 ₁ , 83 ₂ by closing plates 89... Fixedly held between the base 34 and the base 66 fastened to one surface 34 a of the base 34.
Are closed in an oil-tight manner, and damper chambers 90... Defined by the recesses 83 ₁ , 83 ₂ and the closing plates 89 are connected to the master cylinder M via orifices 25 ₁ , 25 ₂ . It will be connected to the output ports 12 and 13.

The reservoir 19 _1, 19 _2, the recess 84 ₁ that opens to the outer surface 34b of the substrate 34, 84 ₂ each fitting, a bottomed cylindrical reservoir forming member fixed 110
... and the normally closed electromagnetic valves _{V CFL, V CRR, V CFR} , leading to V _CRL passage 74 passage 88 _1, 88 ₂ to lead reservoir chamber 9
1 ... piston 92 ... and slidably fitted in the reservoir forming member 110 ... respectively formed between the inner end of the recess 84 _1, 84 _2, the piston 92 ... and the reservoir forming member 110 ... And springs 93. Further, the reservoir forming member 110
Open holes 111 are respectively formed in the closed ends of.

Between the arrangement positions of the normally open solenoid valves V _{OFL to} V _ORL and the normally closed solenoid valves V _{CFL to} V _CRL , the base 34 at the center along the arrangement direction has the coil assembly unit 75 side. Is formed with a bottomed storage hole 94 opened on the opposite side, and an output shaft 95 of the motor 22 mounted on the outer surface 34b of the base 34 is coaxially inserted into the storage hole 94, and is inserted into the storage hole 94. The output shaft 95 has a cam member 9 having an outer surface whose distance from the axis of the output shaft 95 is different in the circumferential direction.
6 is fixed.

The outer surface 34 of the base 34 is
flange 22a fastened to b is provided, the reservoir 19 _1, 19 ₂ of the reservoir forming member 110 ... is flange-shaped clamped portion 110a that issued radially outwardly Zhang provided integrally. Thus, the held portion 110a is
Outer surface 34b and flange 2 fastened to outer surface 34b
2a, so that the recesses 84 ₁ , 84 ₂
Are fixed to the base 34.

The base 34 has a normally open solenoid valve V _OFL -V
A pair of mounting holes 97 ₁ extending in the arrangement direction of the _ORL and the normally closed electromagnetic valves V _CFL ~V _{CR L} open to an inner surface of the receiving hole 94, 97 ₂ are provided, the return pump 21
_1, 21 ₂ is disposed in the mounting hole 97 _1, 97 in ₂ so as to be driven by the cam member 96.

The return pumps 21 ₁ , 21 ₂ are brought into sliding contact with the pump housings 98 ₁ , 98 ₂ fitted and fixed in the mounting holes 97 ₁ , 97 ₂ , respectively, with the cam member 96. piston 9 to form a pump chamber 100 _1, 100 ₂ between the pump housing 98 _1, 98 ₂ with the slidably fitted in the pump housing 98 _1, 98 ₂
9 ₁ , 99 ₂ .

The pump housing 98₁, 98_TwoAnd
And piston 99₁, 99_TwoHas a reservoir 19₁, 19
_TwoPassage 88 communicating with₁, 88_TwoInhalation channel 1 that always leads to
01 ₁, 101_TwoIs provided, and the piston 99₁,
99_TwoThe pump room 100 ₁, 100_TwoWhen the volume of
To open the suction passage 101₁, 101_TwoThe pump room 100
₁, 100_TwoSuction valve 20 to communicate with₁, 20_TwoIs attached
Is done.

Further, the pump housings 98 ₁ , 98 ₂ have damper chambers 90, 90 in the dampers 24 ₁ , 24 ₂ .
Passages 102 ₁ , 102 ₂ provided in the base 34 through
Discharge passage 103 ₁ leading to, 103 with ₂ are provided, the pump chamber 100 _1, 100 ₂ of the discharge passage to open when the volume reduction 103 _1, 103 ₂ pump chamber 100 _1, 10
Discharge valves 23 ₁ and 23 ₂ communicating with O ₂ are mounted.

Next, to explain the action of this first embodiment, the normally open electromagnetic valves _{V OFL, V OR R, V} OFR, V ORL
Then, the excitation of the coil 43 causes the fixed core 38 _O to move from the cylindrical portion 45 b of the guide cylinder 35 _O , the substrate 66,
A magnetic flux reaches the fixed core 38 _O via the bottomed cylindrical portion 49 of the guide cylinder 35 _O and the movable core 39, and the movable core 39 is attracted to the fixed core 38 _O side, whereby the valve element 41 is seated on the valve seat 40. Thus, the valve hole 57 is closed. In each of the normally closed solenoid valves V _CFL , V _CRR , V _CFR , and V _CRL , the excitation of the coil 43 causes the fixed core 38 _C to move from the yoke 4.
4, the substrate 66, through the cylindrical portion 45b and the movable core 39 of the guide cylinder 35 _C magnetic flux is generated leading to the fixed core 38 _C, the valve element 41 is a valve seat by the movable core 39 is attracted to the fixed core 38 _C side The valve hole 57 will be opened apart from 40.

Such an anti-lock brake control device
At 15, each solenoid valve V_OFL, V _ORR, V_OFR, V
_ORL, V_CFL, V_CRR, V_CFR, V_CRLHouse in
Ng 37_O…, 37_C… Is the fixed core 38_O…, 38_C
Are fixed and the movable cores 39 are stored respectively.
The fitting recess 50 of the base 34 is_O…, 50_CTo ...
Each coil 4 fitted and wound around a bobbin 42, respectively.
3 and a pair of yokes 44, 44 are unitized
The coil assembly unit 75 formed of
And each of the housings 37_O…, 37_C…of
Guide tube 35_O…, 35_C... is a coil assembly unit 75
Are inserted into the respective bobbins 42. Therefore mechanically
Each housing 37 in which the actuating element to be actuated is stored_O…,
37_CAre assembled on the base 34,
Performance check and sealability check.
And a coil assembly unit 75 including electrical elements,
Each housing 37_O…, 37_C… And separated from sex
Performance check can be performed.
Efficiency is improved, quality control becomes easier, and
The assembly workability is improved.

The components of the coil assembly unit 75
A certain substrate 66 is provided with each housing 37. _O…, 37_CBased on ...
It also has the function of fixing to the body 34,
Ng 37_O…, 37_C... for fixing to the base 34.
Components are no longer required, contributing to a reduction in the number of parts.
Can be. Moreover, it is provided in the coil assembly unit 75.
Cover 76 has a plurality of coils 43 connected to each coil 43.
Couplers 80, 80 having connection terminals 81, 81.
So that the coil assembly unit 75
Wiring connection work is not required at the time of assembling.
Is more improved.

One yoke 44 is fastened to the substrate 66 in common with all the normally-open solenoid valves V _{OFL to} V _ORL , and 1 is commonly used in all the normally-closed solenoid valves V _{CFL to} V _CRL.
Since the two yokes 44 are fastened to the substrate 66, the number of components can be reduced. In addition, the normally open electromagnetic valves V _OFL ~V _ORL side and the normally closed electromagnetic valves V _CFL ~V _{CR L}
By separating the yokes 44, 44 from the side, the normally-open solenoid valves V _{OFL to} V _ORL and the normally-closed solenoid valves V _{CFL to} V _CFL -V
_{When the} coil 43 is energized or demagnetized on one side of the _CRL , the malfunction of the valve due to transmission to the other side can be prevented.

The yokes 44, 44 sandwich the bobbins 42 around which the coils 43 are wound, respectively, between the yokes 44 and the substrate 66, and the substrate 66 is mounted on the step portions 45a of the housings 37 _O , 37 _C. It is to be adhered. Therefore, the yoke 4 that covers a part of the coils 43 and magnetically couples the base ends and the distal ends of the guide cylinders 35 _O , 35 _C.
It is possible to prevent rattling along the axial direction of the yokes 44, 44 while avoiding the application of an excessive load to the yokes 4, 44, and to stabilize the magnetic characteristics.

Further, the reservoirs 19 ₁ and 19 ₂ are provided with the base 3
4 recesses 84 _1, 84 ₂ to the reservoir forming member 110 ... are fitted, is fixed, the recess 84 ₁ a reservoir 91 ..., 84
₂ and a reservoir forming member 1 formed between the inner end
10 are slidably fitted to the piston 92, and a spring 93 is provided between the piston 92 and the reservoir forming member 110.
Are respectively contracted, the maximum volume of the storage chambers 91 can be easily changed by changing the axial length of the reservoir forming members 110.
That is, by preparing a plurality of types of reservoir forming members 110 having different axial lengths with respect to the base body 34 having the same shape, the maximum volume of the storage chamber 91 can be set to an optimum value according to the vehicle type. Can be generalized.

Each of the solenoid valves V _{OFL to} V _ORL , V _{CFL to} V _CFL
Reservoir 1 in the dead space deviating from the location of the _CRL
By providing the components 9 ₁ and 19 ₂ and the dampers 24 ₁ and 24 ₂ , the size and weight of the base 34 can be reduced.

Further, the reservoir forming member 110 is configured such that the portion to be clamped 110a is clamped between the flange 22a of the motor 22 and the outer surface 34b of the substrate 34, and
, The reservoir forming member 110
This eliminates the need for a dedicated component for fixing the device, thereby contributing to a reduction in the number of components.

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.

[0059]

As described above, according to the first aspect of the present invention, the base has a concave portion opened on the outer surface thereof, and a passage communicating with the suction port of the return pump and opening on the inner end of the concave portion. A reservoir is formed between the bottom-end cylindrical reservoir forming member fitted and fixed in the concave portion and the inner end of the concave portion and a storage chamber communicating with the passage. Since it is composed of a piston movably fitted and a spring contracted between the piston and a closed end of the reservoir forming member, a plurality of types of reservoirs having different shapes and sizes can be formed on the same shaped base. By preparing the members, the maximum volume of the storage chamber can be set to an optimum value according to the type of vehicle, and the base can be general-purpose.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the motor is provided with a flange fastened to an outer surface of the base, and the reservoir forming member includes the base and the base. Since it is sandwiched between the flanges, the reservoir forming member can be fixed to the base by the flange for connecting the motor to the base, and a dedicated component for fixing the reservoir forming member to the base is unnecessary, thereby reducing the number of parts. Can be contributed to.

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional side view of the antilock brake control device, and is a sectional view taken along line 2-2 of FIG. 3;

FIG. 3 is an enlarged sectional view taken along line 3-3 of FIG. 2;

FIG. 4 is an enlarged vertical sectional view of a normally-open solenoid valve.

FIG. 5 is an enlarged vertical sectional view of a normally closed solenoid valve.

FIG. 6 is a longitudinal sectional side view of the antilock brake control device before assembly.

FIG. 7 is a cross-sectional view of the base taken along the line 7-7 in FIG. 2;

FIG. 8 is a sectional view taken along line 8-8 in FIG. 3;

FIG. 9 is a sectional view taken along line 9-9 of FIG. 8;

[Description of Signs] 15: Anti-lock brake control device 19 ₁ , 19 ₂ ... Reservoir 21 ₁ , 21 ₂ ... Return pump 22 ... Motor 22a ... Flange 34 ... Base 34b · · · Outer surfaces 84 ₁ , 84 ₂ ... recesses 88 ₁ , 88 ₂ ... passages 91 ... storage chambers 92 ... pistons 93 ... springs 110 ... reservoir forming members B _FL , B _FR , B _RL, B _RR: Wheel brake M: Master cylinder V _CFL , V _CFR , V _CRL , V _CRR: Normally closed solenoid valve V _OFL , V _OFR , V _ORL , V _ORR: Normal Open solenoid valve

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-58260 (JP, A) JP-A-4-356262 (JP, A) JP-A-63-199164 (JP, A) 11767 (JP, U) Special Table 3-502829 (JP, A) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B60T 8/36

Claims (2)

(57) [Claims] 1. A master cylinder (M) and a plurality of wheels.
Brake (B_FL, B _FR, B_RL, B_RR) Interposed between each
Of normally open solenoid valves (V_OFL, V_OFR, V_ORL,
V_ORR) And a fixist with one end facing the storage room (91)
The spring (92) has a spring
Energized reservoir (19₁, 19_Two)
Number of wheel brakes (B_FL, B_FR, B_RL, B_RR) And re
The observer (19₁, 19_Two) Between the storage rooms (91)
A plurality of normally closed solenoid valves (V_CFL, V_CFR, V
_CRL, V_CRR) Are disposed on a common base (34),
Note reservoir (19₁, 19_Two) Into the storage room (91)
Return pump (21)₁, 21_Two) Linked to
The motor (22) to be mounted is attached to the base (34).
In the anti-lock brake control device, the base (34)
Has a concave portion (84) opened in its outer surface (34b).₁, 8
4_Two) And return pump (21₁, 21_Two)
Through the recess (84₁, 84_Two) Through the inner end of the
Road (88₁, 88_Two) And a reservoir (1)
9₁, 19_Two) Is the concave portion (84).₁, 84_Two)
In this case, a cylindrical reservoir forming member with a bottom fixed (11
0) and the passage (88)₁, 88_TwoStorage room leading to)
(91) with the concave portion (84)₁, 84_TwoBetween the inner edge of
Formed and slidably fitted to the reservoir forming member (110)
Piston (92) to be operated, the piston (92) and
If it is contracted between the closed ends of the reservoir forming member (110)
(93)
Brake control device. 2. The motor (22) is provided with a flange (22a) fastened to an outer surface (34b) of the base (34), and the reservoir forming member (110) includes a base (34) and the flange (22a). 2. The anti-lock brake control device according to claim 1, wherein the anti-lock brake control device is sandwiched between the two.