JP3164333B2 - Anti-lock brake control device for vehicle and method of forming mount shaft - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a normally open solenoid valve interposed between a master cylinder and a wheel brake, a storage chamber, and a normally closed solenoid valve interposed between the storage chamber and the wheel brake. A base in which a valve, a return pump having an inlet connected to the storage chamber, and a damper chamber connected between the normally open solenoid valve and the master cylinder and communicating with a discharge port of the return pump are provided. An anti-lock brake control device for a vehicle in which a flange of a motor connected to the return pump is fastened and a mount shaft fixed to the base is mounted on a vehicle body via a mount rubber, and a method of forming the mount shaft About.

[0002]

2. Description of the Related Art Conventionally, such an anti-lock brake control device is already known, for example, from Japanese Patent Application Laid-Open No. 5-50906.

[0003]

In the above-described conventional anti-lock brake control device, a mounting bolt serving as a mount shaft for mounting the anti-lock brake control device on a vehicle body is screwed to a base body, and a motor is mounted. It is difficult to say that the number of parts is small, and it is hard to say that the operation of screwing each bolt to the base is also necessary, and the number of working steps is also small.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and reduces the number of parts for attaching a base to a vehicle body and parts for attaching a motor to a base, thereby reducing the number of work steps. It is an object of the present invention to provide an anti-lock brake control device and a method of forming a mount shaft so that the mount shaft can be easily processed.

[0005]

In order to achieve the above object, the present invention is directed to a normally open solenoid valve interposed between a master cylinder and a wheel brake, a storage chamber, and the storage chamber. A normally closed solenoid valve interposed between the wheel brakes, a return pump having a suction port connected to the storage chamber, and a discharge pump connected between the normally open solenoid valve and the master cylinder, A flange of a motor connected to the return pump is fastened to a base provided with a damper chamber to which an outlet communicates, and a mount shaft fixed to the base is attached to a vehicle body via a mount rubber. In an anti-lock brake control device for a vehicle, a mount shaft penetrates a motor flange and is integrally provided with a base, and a nut for holding the flange between the mount shaft and the base is screwed to the mount shaft. It is characterized in.

According to a second aspect of the present invention, in forming the mount shaft according to the first aspect, recesses which are opened on one surface side of the base for forming a damper chamber and a storage chamber are forged and formed. A part of the base protruded in a bar shape from the other surface of the base at the time of forging of at least one of the bases is subjected to screw processing for screwing a nut to form a mount shaft.

[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.

1 to 11 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 an antilock brake supported by a vehicle body. FIG. 3 is a side view of the control device, FIG. 3 is a cutaway plan view seen from the direction of arrow 3 in FIG. 2, FIG. 4 is a cutaway side view along line 4-4 in FIG. 3, and FIG. 6 is an enlarged longitudinal sectional view of the normally-open solenoid valve, FIG. 7 is an enlarged longitudinal sectional view of the normally-closed solenoid valve, FIG. 8 is a front view of the base seen from the same direction as FIG. 5, FIG. 5 is a sectional view taken along line 9-9 in FIG. 5, and FIG.
FIG. 11 is a sectional view taken along line 10-10 of FIG.

First, in FIG. 1, a tandem type master serial
M is a braking fluid pressure corresponding to the depression of the brake pedal P.
And a pair of output ports 12 and 13 for outputting
Wheel brake B for left front wheel_FL, Right rear wheel brake B_RR
Proportional pressure reducing valve 14 connected to _R, Right front wheel brake
B_FR, And left rear wheel brake B_RLConnected to
Proportional pressure reducing valve 14_LBetween the two output ports 12 and 13
An anti-lock brake control device 15 is interposed therebetween.

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
Rake B_RLNormally open solenoid valves individually corresponding to
V_OFL, V_ORR, V_OFR, V_ORLAnd each normally open solenoid valve V
_OFL~ V_ORLFour checkers connected in parallel
K valve 17_FL, 17_RR, 17_FR, 17_RLAnd each of the wheels
Rake B_FL~ B_RLNormally closed solenoid valves individually corresponding to
V_CFL, V_CRR, V_CFR, V_CRLAnd the left front wheel
B_FLAnd right rear wheel brake B_RRSide and right
Front wheel brake B_FRAnd left rear wheel brake B
_RLA pair of reservoirs 19 each individually corresponding to the side₁,
19_TwoAnd both reservoirs 19₁, 19_TwoSuction valve 20₁,
20_TwoPair of return pumps 21 connected via₁, 2
1_TwoAnd double return pump 21₁, 21_TwoMotor 2 common to
2 and double return pump 21₁, 21_TwoDischarge valve 23₁, 2
3_TwoOf dampers 24 connected via₁, 24
_TwoAnd the output ports 12, 13 and
And both dampers 24₁, 24_TwoInterposed between each other
Orifice 25₁, 25_TwoAnd each normally open solenoid valve V_OFL
~ V_ORLAnd each normally closed solenoid valve V _CFL~ V_CRLDemagnetization of
And an electronic control unit 26 for switching control of the excitation.

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 the _normally open solenoid valve _VORR is connected to the output port 12 and the right rear wheel brake B _RR. The _normally open solenoid valve V _OFR is interposed between the valve 14 _R and
Interposed between the other output port 13 and right front wheel brake B _FR of the master cylinder M, the normally open electromagnetic valve V _ORL
It is interposed between the connected proportional pressure reducing valve 14 _L to the output port 13 and left rear wheel brake B _RL. Check valves 17 _{FL to} 17 _RL are connected to the corresponding wheel brake B
It is connected in parallel to the the normally open electromagnetic valves V _OFL ~V _ORL so as to allow only a flow of hydraulic fluid from the _FL .about.B _RL.

[0012] normally closed electromagnetic valves V _CFL is between the left front wheel brake B _FL and the reservoir 19 _1, the normally closed electromagnetic valve V _CRR
Between the proportional pressure reducing valve 14 _R and the reservoir 19 _1, between the normally closed electromagnetic valve V _CFR right front wheel brake B _FR and the reservoir 19 _2, also normally closed electromagnetic valve V _CRL are proportional pressure reducing valves 1
Each of which is interposed between 4 _L and the reservoir 19 _2.

According to such an anti-lock brake control device 15, during normal braking in which each wheel is unlikely to be locked, each of the normally-open solenoid valves V _{OFL to} V _ORL is opened in a demagnetized state. And each normally closed solenoid valve V
_{CFL to} V _CRL are demagnetized and closed. Accordingly, the brake fluid pressure output from one output port 12 of the master cylinder M acts on the left front wheel brake _BFL via the _normally- open solenoid valve V _OFL and _{simultaneously} operates the normally-open solenoid valve V _FL.
Acts on the _ORR and the proportional pressure reducing valve 14 via the _R wheel right rear wheel brake B _RR, also braking hydraulic pressure output from the other output port 13 of the master cylinder M is normally open electromagnetic valves V
_OFR acting on the wheel brake B _RL for the rear left wheel via a normally open electromagnetic valve V _ORL and the proportional pressure reducing valve 14 _L with acting on the right front wheel brake B _FR through.

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 to be maintained, the normally-open solenoid valves V _{OFL to} V _ORL are excited to close, and the normally-closed solenoid valves V _{CFL to} V _CRL are demagnetized to maintain the closed state. 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 . Therefore, the amount of depression of the brake pedal P in the master cylinder M does not increase by the amount released to the reservoirs 19 ₁ , 19 ₂ , and the return pumps 21 ₁ , 2
1 pulsations of the hydraulic fluid delivered from the ₂ damper 24 _1, 24
₂ and the orifices 25 ₁ and 25 ₂ are attenuated, and pulsation is not transmitted to the brake pedal P.

The electronic control unit 26 for controlling 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 has} a possibility that the wheels are about to enter a locked state. Wheel speed sensors 27 _FL , 27 _RR , 27 _FR , which individually detect the wheel speed of each wheel to determine whether
27 _RL, a detection signal of a handbrake detection sensor 29 for detecting whether the handbrake lever 28 has been operated, and an electronic control unit 26 in the anti-lock control state.
An alarm 30 such as a lamp activated by the electronic control unit 26 is connected to the electronic control unit 26.

2 and 3, the anti-lock brake control device 15 includes a metal base 34 formed in a block shape.
5 is attached. That is, the bracket 36 fixed to the vehicle body 35 is provided with a support plate 36a facing one surface 34a of the base 34 and a pair of support plate portions 36b, 36b facing the other surface 34b of the base 34. the support plate portion 36 through the mounting means 37 _2, 37 ₂ with is attached to the support plate portion 36a via a mounting means 37 ₁
b, 36b.

Referring to FIG. 4 and FIG.
4, four _normally open solenoid valves V _OFL , V _ORR , V _OFR ,
V _ORL is arranged in parallel, and four normally closed solenoid valves V _CFL , V _CRR , V _CFR , V _CRL are arranged in parallel in the arrangement direction of the normally open solenoid valves V _{OFL to} V _ORL. Will be arranged.

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. 6, a normally open solenoid valve V _OFL includes a housing 39 _O having a bottomed cylindrical guide cylinder 38,
Fixed core 40 fixedly arranged at one end side in guide cylinder 38
_O , a movable core 41 _O that is spring-loaded in a direction away from the fixed core 40 _O and is accommodated in the guide cylinder 38, and a movable core that enables seating on a valve seat 42 provided on the fixed core 40 _O. 41 _O and a coil 45 wound around a bobbin 44 surrounding the guide cylinder 38
And a yoke 46 that covers a part of the coil 44 and magnetically couples between both ends of the guide cylinder 38.

The housing 39 _O has a guide cylinder 38 formed of a non-magnetic material and having a thin bottomed cylindrical shape.
The housing main body 48 _O formed of a magnetic metal in a stepped cylindrical shape and a ring body 49 formed of a magnetic metal and caulked to the housing main body 48 _O are sandwiched in a liquid-tight manner.

The open end of the guide cylinder 38 is located radially outward.
The flange portion 38a that protrudes is provided integrally. Ring body 4
Reference numeral 9 denotes a ring shape coaxially surrounding the open end of the guide cylinder 38.
And the housing body 48_OCrimped
A thin cylindrical portion 49a is provided coaxially with the ring body 49.
Fixed core 40_OIs a cylindrical body 48 _O
The guide cylinder 3
8 and the ring body 49 and the housing body 4
8_OThe thin cylindrical portion 49a is housed between
48_OWhen crimped, fixed core 4
0_OIs fitted into the opening end of the guide cylinder 38.
An annular seal is provided between the ring body 49 and the guide cylinder 38.
The tool member 50 is interposed.

The valve chamber 51 _O is formed between the fixed within the guide tube 38 core 40 _O and the movable core 41 _O, the fixed core 4
0 At the end center facing the valve chamber 51 _O of _O, valve seat member 52 having a tapered valve seat 42 is fixed, the valve body 43 at an end center facing the valve chamber 51 _O of the movable core 41 _O It is fixed.
Moreover fixed core 40 _O and the movable core 4 in the valve chamber 51 _O
A return spring 53 that exerts a spring force in a direction to separate the movable core 41 _O from the fixed core 40 _O , that is, a direction to separate the valve element 43 from the valve seat 42 is provided between 1 _O and 1 _O.
Also on the outer surface of the movable core 41 _O, circulation grooves 59 _O that allows the flow of hydraulic fluid is drilled over the entire axial length.

The valve seat member 52, which has a valve hole 54 which opens into the central portion of the valve seat 42, the fixed core 40 _O and main housing body 48 _O, a passage 55 communicating coaxially valve hole 54 provided, the fixed core 40 _O of the main housing body 48 _O at the opposite end, the filter 56 facing the open end of the passage 55 is mounted. Further there is formed a circular path 57 is formed between the thin cylindrical portion 49a and the main housing body 48 _O of the ring body 49, annular passage 57 and the valve chamber 51 _O
Communication passage 58 communicating between is provided to the stationary core 40 _O and the main housing body 48 _O. Check valve 17 _FL is disposed in the further housing main 48 _O between the filter 56 and communication passage 58.

Housing 39_OPart of the base 34
Fitting recess 61 provided on surface 34a _OAnd the ring body 49
So that it is substantially flush with one surface 34a of the base 34.
Are combined. This fitting recess 61_OIs the housing 39_OTo
Housing body 48_OAnd the outer surface of the ring body 49
It is formed as a stepped bottomed hole corresponding to the shape.
There is a fitting recess 61 on the outer surface of the ring body 49._OInside
When the annular sealing member 62 that makes elastic contact is attached,
Fitting recess 61_OAn annular filter interposed between the
The housing 63 is attached with the_OOn the outside
Fitting recess 61_OAnnular sealing member that resiliently contacts the inner surface of the
64_OIs attached. The housing body 48_Oand
The outer surface of the ring body 49 and the fitting recess 61_OBetween the inside of
Is the annular chamber 65_OAre formed, and this annular chamber 65 is formed.
_OIs thinner in the filter 63 and the ring body 49.
Through a plurality of communication holes 66 formed in the thick cylindrical portion 49a.
To the annular path 57.

On the other hand, the fitting recess 61_OInner edge of
A passage 67 opening to the closing portion;_OReam that leads to
Passage 68 and annular chamber 65_OTo the front left wheel brake B_FL
Output port 69 to communicate with_FLAre provided. Thus
Output port 69_FLIs opened on one side of the base 34
As shown in FIG. 3, each normally open solenoid valve V
_ORR, V_OFR, V_ORLAt the positions corresponding to
4 so that it opens on one side, and the right rear wheel brake
Key B_RRProportional pressure reducing valve 14_R(See Fig. 1), front right wheel
Wheel brake B_FR, Left rear wheel brake B_RLConnected to
Proportional pressure reducing valve 14 _L(See Fig. 1)
Output port 69_RR, 69_FR, 69_RLIs provided on the base 34
It is.

By the way, the housing 39 _O in part is fitted into the mating recess 61 _O state, all of the normally open electromagnetic valves V
_{OFL to} V _ORL and all normally closed solenoid valves V _{CFL to} V _CRL
The fixing plate 70 is fixed to the base 34 by fastening the common holding plate 70 to the one surface 34 a of the base 34. The holding plate 70 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 bolts 71.
4 is fastened to one surface 34a of the base 34 by mounting means 37 ₁ of the components for supporting the vehicle body 35.
Moreover, the _normally open solenoid valves V _OFL -V
_ORL guide cylinder 38 ... and each normally closed solenoid valve V _CFL ~
Eight insertion holes 72 for inserting the guide cylinders 38 of the V _CRL (see FIG. 7) are provided, and the holding plate 7 in which each guide cylinder 38 is inserted into the corresponding insertion hole 72.
0 contacts the ring body 49 of the housing 39 _O and
4 is fastened to one surface 34a of the housing 3
9 _O is fixed to the base 34 and the housing 39 is
_{The O} guide cylinder 38 protrudes from the holding plate 70.

The bobbin 44 is provided with a pressing plate 7 for the guide cylinder 38.
0, and is formed of a synthetic resin in a cylindrical shape surrounding the protruding portion.
5 is wound.

The yoke 46 is provided with all the normally open solenoid valves V_OFL
~ V_ORLAnd all normally closed solenoid valves V_CFL~ V_CRLTo
On the side opposite to the holding plate 70, each normally open type
Magnetic valve V_OFL~ V_ORLBobbin 44 and each normally closed type electromagnetic
Valve V_CFL~ V_CRLPair that respectively abuts the bobbin 44 of
Each of the normally-open solenoid valves V
_OFL~ V_ORLAnd each normally closed solenoid valve V_CFL~ V_CRLNo bo
With magnetic metal so as to surround the bottles 44 in common
It is formed into a rectangular box. In addition, the yoke 46
Are provided with a plurality of mounting plate portions 46b contacting the plate 70.
Each mounting plate portion 46b is pressed by the screw member 73.
It is attached to the plate 70. The yoke 46 is a holding plate
70, each normally open solenoid valve V_OFL~ V
_ORLOf the bobbin 44 are pressed between the holding plate 70 and the yoke 46.
It will be sandwiched between the contact plate portion 46a. And yaw
The tip of each guide tube 38...
Notches 74 for inserting the parts are provided.

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. 7, a normally closed solenoid valve V _CFL comprises a housing 39 _C having a bottomed cylindrical guide cylinder 38,
A fixed core 40 _C fixed to the distal end side of the guide cylinder 38,
And the movable core 41 _C is accommodated in the guide cylinder 38 in a direction away from the fixed core 40 _C is spring-biased, fixed to the movable core 41c as possible the seating of the valve seat 42 in the housing 39 _C The valve body 43, a coil 45 wound around a bobbin 44 surrounding the guide cylinder 38, and a yoke 46 that covers a part of the coil 45 and magnetically couples both ends of the guide cylinder 38. Prepare.

[0032] Housing 39 _C, the open end of the guide tube 38 is a bottomed cylindrical thin wall, the housing main 48 _C is formed in a stepped cylindrical shape from a magnetic metal, housing main 48 is formed of a magnetic metal It is sandwiched in a liquid-tight manner with a ring body 49 which is crimped to _C.

The flange 38a of the guide cylinder 38 is
And the main housing body 48 thin cylindrical portion 49a is the main housing body 48 _C in so as to sandwich between a _C-ring 49
An annular seal member 50 is interposed between the ring body 49 and the guide cylinder 38. Also on the front end side of the guide tube 38 are fitted fixed core 40 _C is,
The fixed core 40 _C is fixed in the guide tube 38 by engaging the guide tube 38 is caulked to the fixed core 40 _C.

The movable core 41 _C is slidably fitted to face the fixed core 40 _C in the guide cylinder 38, valve chamber 51 _C is formed between the housing main 48 _C and the movable core 41 _C, the end center facing the valve chamber 51 _C of the main housing body 48 _C, the valve seat member 52 having a tapered valve seat 42 is fixed, the valve body 43 is an end facing the valve chamber 51 _C of the movable core 41 _C It is fixed at the center. Also in the guide tube 38, between the fixed core 40 _C and the movable core 41 _C, the movable core 41
Direction of separating the _C from the fixed core 40 _C, i.e. the return spring 53 exerts a spring force in a direction for seating the valve body 43 on the valve seat 42 is mounted under compression, the outer surface of the movable core 41 _C, the flow of hydraulic fluid circulation grooves 59 _C to permit are bored over the entire axial length.

Housing main body 48_CThe valve seat member 52
A passage 77 is provided coaxially with the valve hole 54 of the housing.
48_CMovable core 41_COn the opposite end
Is equipped with a filter 78 facing the open end of the passage 77.
You. The thin cylindrical portion 49a of the ring body 49 and the housing
Subject 48_CAn annular path 79 is formed between
Annular path 79 and valve chamber 51_CMultiple communication paths connecting between
80 is the housing main body 48 _CIs provided.

Housing 39_CPart of the base 34
Fitting recess 61 provided on surface 34a _CAnd the ring body 49
So that it is substantially flush with one surface 34a of the base 34.
Are combined. This fitting recess 61_CIs the housing 39_CTo
Housing body 48_CAnd the outer surface of the ring body 49
It is formed as a stepped bottomed hole corresponding to the shape.
There is a fitting recess 61 on the outer surface of the ring body 49._CInside
When the annular sealing member 62 that makes elastic contact is attached,
Fitting recess 61_CAn annular filter interposed between the
The housing 63 is attached with the_COn the outside
Fitting recess 61_CAnnular sealing member that resiliently contacts the inner surface of the
64_CIs attached. The housing body 48_Cand
The outer surface of the ring body 49 and the fitting recess 61_CBetween the inside of
Is the annular chamber 65_CAre formed, and this annular chamber 65 is formed.
_CIs the communication between the filter 63 and the thin cylindrical portion 49a.
It communicates with the annular path 79 through the holes 66.

On the other hand, the base 34 has passage 81 which opens into the inner end closed portion of the fitting recess 61 _C is bored, provided in the base 34 communicates with the annular chamber 65 _O of the normally open electromagnetic valves V _CFL communicating passage 68 which is is communicated with the annular chamber 65 _C.

The housing 39 _C of the normally closed type solenoid valves V _{CFL to} V _CRL is provided with the normally open type solenoid valves V _{OFL to} V _ORL.
As in the case of the housing 39 _O , the holding plate 70 is fixed to the base 34 by tightening the holding plate 70 to one surface 34 a of the base 34, and the guide cylinder 38 of the housing 39 _C protrudes from the holding plate 70 in this state.

In FIG. 8, the base 34 is provided with four fitting recesses 61 _O for fitting the housings 39 _{O of the normally} open solenoid valves V _{OFL to} V _ORL in parallel. Four fitting recesses 61 _C for fitting the housings 39 _{C of the} normally closed solenoid valves V _{CFL to} V _CRL respectively.
There wherein is provided side by side in the fitting recess 61 _O ... arrangement direction, on the side opposite to the fitting recess 61 _O ... sequence positions with respect to the fitting recess 61 _C ... sequence position of one surface of the base 34 3
Recesses 83 ₁ , 84 ₁ , 84 ₂ , and 83 ₂ that open to 4a are provided side by side in the arrangement direction of the fitting recesses 61 _C.

In FIG. 9, dampers 24 ₁ and 24 ₂ are
The opening ends of the recesses 83 ₁ and 83 ₂ are liquid-tightly closed by closing plates 85... Fixedly held between the base 34 and the pressing plate 70 fastened to one surface 34 a of the base 34. Each of the recesses 83 ₁ , 83 ₂ and the closing plate 85.
In the damper chamber 86 ... is defined, as shown in Figure 1, it will be communicated with the output port 12 of the master cylinder M via the orifice 25 _1, 25 _2.

In FIG. 10, the reservoir 19₁, 19_Two
Are formed between the storage chambers 87 and the base 34, respectively.
Recess 84₁, 84_TwoSlidably and oil-tightly fitted
The piston 88 is fastened to one surface 34a of the base 34.
A return contracted between the holding plate 70 and the pistons 88.
, And the storage chambers 87.
1, the normally closed solenoid valve V_CFL~ V_CRLAnd return
Pump 21₁, 21 _TwoWill be connected.

As shown in FIG. 3, the base 34 at the center of the normally open solenoid valves V _{OFL to} V _{ORL and} the arrangement position of the normally closed solenoid valves V _{CFL to} V _CRL along the direction of their arrangement, as shown in FIG. A bottomed storage hole 90 is formed in the other surface 34b of the base 34, and an output shaft 91 of the motor 22 mounted on the other surface 34b of the base 34 is coaxially inserted into the storage hole 90. , The output shaft 9 in the storage hole 90 and the output shaft 9.
A cam member 92 having an outer surface whose distance from one axis differs in the circumferential direction is fixed.

A _normally open solenoid valve V _OFL -V
A pair of mounting holes 95 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 accommodating hole 94 _1, 95 ₂ are provided, the return pump 21
_1, 21 ₂ is disposed in the mounting hole 95 _1, 95 in ₂ so as to be driven by the cam member 92.

[0044] Notice in Figure 3, the return pump 21 ₂ is fitted into the mounting hole 95 in the _2, the pump housing 9 which is fixed
6 and a piston 9 whose tip is slidably fitted to the pump housing 96 by slidingly contacting the cam member 92 and forming a pump chamber 97 between the piston 9 and the pump housing 96.
8 is provided.

In the piston 98, a reservoir 1 is provided.
A suction chamber 99 which is always in communication with 9 ₁ and 19 ₂ is provided. The piston 98 has a suction valve 2 which is opened when the volume of the pump chamber 97 is increased to open the suction chamber 99 to the pump chamber 97.
0 ₂ is mounted.

[0046] More pump housing 96, together with the discharge passage 100 communicating with the damper chamber 86 of the damper 24 ₂ is provided, establishing communication with the discharge chamber 100 by opening when the volume reduction of the pump chamber 97 into the pump chamber 97 discharge valve 23 ₂ is mounted.

The return pump 21 ₂ is
Fitting the mounting hole 95 in _one having ₁ the same configuration as, and fixed.

The bobbins 44... And the yokes 46 of all the normally open solenoid valves V _{OFL to} V _ORL and all the normally closed solenoid valves V _{CFL to} V _CRL are covered with a cover 101 made of synthetic resin. The cover 101 is a cylindrical spacer 10 provided between the cover 101 and the mounting plate portions 46b of the yoke 46.
2. Screw member 1 inserted into cover 101 from outside
03 are screwed onto the holding plate 70 to be attached to the holding plate 70. Thus, each normally open type solenoid valve V _{OFL to} V OFV
_The connection cords 104 connected to the _ORL and the coils 45 of all the normally closed solenoid valves V _{CFL to} V _CRL are drawn out from the cover 101 to the outside.

The support plate 36 of the bracket 36
and a, mounting means 37 _1, which is interposed between the one surface 34a side of the substrate 34, as shown in Figure 4, the mount bolt 106 ₁ which is fixed to the substrate 34, the mounting bolt 1
06 ₁ is mounted.

The mounting bolt 106 ₁ is attached to the holding plate 70.
And a screw shaft portion 106a screwed to the base 34 through
The holding plate 70 is sandwiched between the base 34 and the screw shaft 10.
Engagement part 106b coaxially and integrally connected to 6a
And a fitting shaft portion 106 coaxially and integrally connected to the engaging flange portion 106b so as to be fittable in the mount rubber 107.
c. Also, the mount cover 108
Is composed of a support portion 108a formed in a dish shape by attaching a mount rubber 107 formed in a cylindrical shape to an inner surface, and a screw shaft portion 108b integrally and coaxially connected to the support portion 108a. The screw shaft portion 108b is inserted into the support plate portion 36a of the bracket 36, and a nut 109 engaging with the support plate portion 36a is screwed into an end of the screw shaft portion 108b protruding from the support plate portion 36a. Are combined. Thus, the substantially U-shaped insertion groove 11 opened to the opposite side to the vehicle body 35 so that the screw shaft portion 108b can be inserted into the support plate portion 36a.
5 are provided.

In order to dispose such mounting means 37 ₁ , an arc-shaped notch 101 a is provided in the cover 101 at a position corresponding to between the reservoirs 19 ₁ and 19 ₂ .

Referring also to FIG. 11, the housing 111 of the motor 22 is integrally provided with a flange 110 which is in contact with the other surface 34b of the base 34.
10, while being fastened to the base 34 by a pair of bolts 112, 112 are fastened to the base 34 via a pair of mounting means 37 _2, 37 _2.

Mounting means 37_TwoIs as shown in FIG.
And a mount shaft 106 provided integrally with the base 34.
_TwoAnd the mount shaft 106_TwoTo fit the mount rubber
And a mount cover 108 having a cover 107. Ma
Und shaft 106_TwoIs inserted through the flange 110
Mounting shaft 106_TwoProtruded from the flange 110
A nut 119 is screwed into the male screw 118 provided on the portion.
The flange 110 is fastened to the base 34 by tightening.
119. Thus, the mount shaft 106
_TwoOf the mounting cover 10 protrudes from the nut 119.
8 is fitted into the mount rubber 107.

The screw shaft portion 108b of the mount cover 108
Is inserted into an insertion groove 116 provided in the support plate portion 36b of the bracket 36, and a nut 109 engaging with the support plate portion 36b is screwed into an end of a screw shaft portion 108b protruding from the support plate portion 36b. You. The insertion groove 116 is substantially U-shaped and opened in the same direction as the insertion groove 115 of the support plate portion 36a.
It is formed in a character shape.

[0055] Moreover mount means 37 _2, 37 _2, which is arranged in the damper 24 _1, 24 ₂ coaxially,
The mount shafts 106 ₂ , 106 ₂ are provided with dampers 24 ₁ , 24
The other surface 3 of the base 34 is made coaxial with the concave portions 83 ₁ and 83 ₂ provided in the base 34 to form the _second damper chambers 86.
4b.

The fitting recess 61 provided in the base 34
_O …, 61 _C … and each recess 83 ₁ , 83 ₂ , 84
_1, 84 _2, which is formed by performing finishing after forging of the base body 34, recesses 83 _1, 83
At the time of the forging process of No. ₂ , a part of the base 34 is projected in a rod shape from the other surface 34b of the base 34, and the outer surface of the rod-shaped protrusion is subjected to a threading process for forming a male screw 118, so that the mount shafts 106 ₂ and ₂ is formed as a shaft integral with the base 34.

Next, the operation of this embodiment will be described.
And each normally open solenoid valve V_OFL, V_ORR, V_OFR, V_ORLso
Is fixed core 40 by excitation of coil 45._OFrom phosphorus
Body 49, holding plate 70, yoke 46 and movable core 4
1_OThrough the fixed core 40_OThe magnetic flux that reaches the
41_OIs the fixed core 40_OThe valve body is sucked to the side
43 is seated on the valve seat 42 to close the valve hole 54.
You. Each normally closed solenoid valve V _CFL, V_CRR, V_CFR, V
_CRLThen, the excitation of the coil 45 causes the fixed core 40_COr
Yoke 46, holding plate 70, ring body 49,
Moving core 41_CThrough the fixed core 40_CMagnetic flux that leads to
Movable core 41_CIs the fixed core 40_CBeing sucked into the side
As a result, the valve body 43 separates from the valve seat 42 and opens the valve hole 54.
Will be.

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_CRLTo the base 34
In this case, the holding plate 70 to be fixed is
34, and the base 34 is attached to the vehicle body 35.
Mounting means 37 for attaching₁Mount Vol
To 106₁The bolt 7
1 can be reduced, and assembling work
The number also drops.

[0059] The mount means 37 _2, 37 ₂ of the mounting shaft 106 _2, 106 ₂ for mounting the other surface 34b side in the vehicle body 35 of the base 34, since those are integrally projecting to the base 34, the base body A mounting bolt for attaching the mounting bolt 34 to the vehicle body 35 is not required, and the number of parts can be reduced. Further, since the operation for screwing the mounting bolt to the base 34 is not required, the number of working steps can be reduced. Become.

Moreover, the mount shafts 106 ₂ , 106 ₂
Since the recesses 83 ₁ and 83 ₂ are formed by projecting a part of the base 34 from the other surface 34b during forging, the formation of the mount shafts 106 ₂ and 106 ₂ becomes extremely easy, which contributes to cost reduction. can do.

Further, the flange 110 of the motor 22 is fastened to the base 34 by bolts 112, 112, and is sandwiched between the nuts 119, 119 screwed to the mount shafts 106 ₂ , 106 ₂ and the base 34. Therefore, the number of bolts 112 can be reduced.

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.

For example, the concave portion 8 for forming the storage chambers 87 of the reservoirs 19 ₁ , 19 _{2 by} the mount shaft 106 _2.
4 _1, 84 or may be integrally projecting from the other surface 34b of ₂ and in the coaxial base 34.

[0064]

As described above, according to the first aspect of the present invention, the mount shaft penetrates through the flange of the motor and protrudes integrally with the base. Since the nut to be clamped is screwed, the number of bolts for attaching the base to the vehicle body and the number of bolts for attaching the motor flange to the base can be reduced.
It is also possible to reduce the number of assembling work steps associated with the reduction in the number of bolts.

According to the second aspect of the present invention, a concave portion opening on one surface side of the base for forming the damper chamber and the storage chamber is forged, and the base is formed at the time of forging at least one of the concaves. A part of the base protruding from the other surface into a rod shape is subjected to threading for screwing a nut to form a mount shaft, so that a mount shaft integral with the base can be formed extremely easily, This can contribute to cost reduction.

[Brief description of the drawings]

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

FIG. 2 is a side view of the antilock brake control device in a state where the device is supported by a vehicle body.

FIG. 3 is a cutaway plan view seen from the direction of arrow 3 in FIG. 2;

FIG. 4 is a cutaway side view taken along line 4-4 in FIG. 3;

FIG. 5 is a sectional view taken along line 5-5 in FIG. 4;

FIG. 6 is an enlarged vertical sectional view of a normally-open solenoid valve.

FIG. 7 is an enlarged vertical sectional view of a normally closed solenoid valve.

FIG. 8 is a front view of the base as viewed from the same direction as FIG. 5;

FIG. 9 is a sectional view taken along lines 9-9 in FIG. 5;

FIG. 10 is a sectional view taken along the line 10-10 in FIG. 5;

11 is a view taken in the direction of the arrow 11 in FIG. 4;

[Explanation of symbols]

15 Anti-lock brake control device 21 ₁ , 21 ₂ Return pump 22 Motor 34 a One surface of base 34 b Other surface of base 35 Vehicle body 78 Storage chamber 83 ₁ , 83 ₂ , 84 ₁ , 84 ₂ ··· Recess 86 ··· Damper chamber 106 ₂ ··· Mounting shaft 107 ··· Mount rubber 110 ··· Flange 119 ··· Nut _BFL , _BFR , 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-5-50906 (JP, A) JP 6-8132 (JP, U) JP 5 96651 (JP, U) Special Table Hei 4-506789 (JP, A) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B60T 8/34-8/50

Claims (2)

(57) [Claims] 1. A master cylinder (M) and a wheel brake
Ki (B_FL, B_FR, B _RL, B_RR) Normally open type electricity interposed between
Magnetic valve (V_OFL, V_OFR, V_ORL, V_ORR) And the storage room
(78), the storage chamber (78) and the wheel brake
(B_FL, B_FR, B_RL, B_RR) Normally closed electromagnetic interposed between
Valve (V_CFL, V_CFR, V_CRL, V_CRR) And the storage chamber
Return pump (21) whose suction port is connected to (78)₁, 2
1_Two) And a normally open solenoid valve (V_OFL, V_OFR, V_ORL, V
_ORR) And the master cylinder (M)
The return pump (21)₁, 21_Two) Discharge port
(34) on which a damper chamber (86) to be disposed is provided.
The return pump (21)₁, 21_Two) Connected to
The flange (110) of the motor (22) is fastened,
The mount shaft (106) fixed to the body (34)_Two) Is mau
Attached to the vehicle body (35) via the retractor (107)
In the anti-lock brake control system of the vehicle
Und axis (106_Two) Is the flange of the motor (22)
(110), projecting integrally with the base (34),
The mount shaft (106_Two) Has a flange (110)
A nut (119) sandwiched between the base (34) is screwed.
Anti-lock brake system for vehicles
Control device. 2. A mounting shaft of claim 1, wherein (106 ₂₎
In forming the damper chamber (86) and the storage chamber (78), one surface (34) of the base (34) is formed.
a) Recesses (83 ₁ , 83 ₂ ; 84 ₁ , 84) opening to the side
₂ ) are forged, and their recesses (83 ₁ , 83 ₂ ; 8)
4 ₁ , 84 ₂ ) for screwing a nut (119) to a part of the base (34) protruding in a bar shape from the other surface (34 b) of the base (34) during forging. A method of forming a mount shaft, comprising forming a mount shaft (106 ₂ ) by performing screw processing.