JP3660146B2 - Brake hydraulic pressure control device for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a brake fluid pressure control device for a vehicle such as a passenger vehicle or a motorcycle, and in particular, a normally open solenoid valve and a normally closed solenoid valve for controlling the brake fluid pressure of a wheel brake are accommodated. A cover made of a synthetic resin is attached to one surface of the housing to form a storage chamber between the housing and at least the solenoid portion of each solenoid valve. The plurality of first terminals are connected to the solenoid portion. An external conductor side connector having a plurality of second terminals respectively connected to a plurality of external conductors is detachably attached to the cover side connector so as to electrically connect the first and second terminals to each other. Regarding improvement.
[0002]
[Prior art]
Conventionally, such a brake fluid pressure control device is already known as disclosed in, for example, Japanese Patent Laid-Open No. 2-216354.
[0003]
[Problems to be solved by the invention]
By the way, in such a brake fluid pressure control device, the first terminal of the cover side connector and the second terminal of the external conductor side connector are electrically connected to each other in the connector chamber formed between the connector housings of both connectors. However, if water from the outside enters the connector chamber and adheres to the connection portions of the first and second terminals, there is a possibility that energization failure may occur. Therefore, it is common to keep the connector chamber sealed when both connectors are connected.
[0004]
However, when the connector chamber is held in a sealed state as described above, the internal pressure of the connector chamber changes due to a temperature change caused by energization between the first and second terminals, and the connector housings of both connectors are respectively deformed. The seal may be insufficient.
[0005]
The external conductor is formed by covering the conductor with an insulating tube. If the end of the external conductor opposite to the external conductor side connector is submerged or water adheres to the end, the connector As the internal pressure of the chamber changes, external water may be sucked into the connector chamber due to capillary action in the gap between the insulating tube and the conductor.
[0006]
The present invention has been made in view of such circumstances, and suppresses a change in the internal pressure of the connector chamber between the cover-side connector and the external conductor-side connector and prevents the vehicle from sucking water into the connector chamber. The purpose is to provide.
[0007]
[Means for Solving the Problems]
  In order to achieve the above object, the invention according to claim 1 is a valve portion of a normally open solenoid valve interposed between a master cylinder and a wheel brake, and a normally closed valve interposed between the wheel brake and a reservoir. A valve part of the electromagnetic valve is accommodated in the housing, and a cover made of synthetic resin that forms a storage chamber between the housing and at least the solenoid part of each solenoid valve is attached to one surface of the housing, A cover-side connector is constituted by a first connector housing integrally connected to the cover, and a plurality of first terminals that are at least connected to the solenoid portions and are accommodated and supported in the first connector housing, A second connector housing that is detachably engaged with the one connector housing, and is individually connected to a plurality of external conductors and accommodated in the second connector housing; A plurality of second terminals to form an external conductor side connector, and the first and second terminals are mutually connected in a connector chamber formed between the two connector housings in a connected state of the cover side and the external conductor side connector. Electrically connected, and the insertion portions of the external conductors into the second connector housing are sealed between the two connector housings.The housing is further provided with an electric motor that drives a pump that recirculates the brake fluid absorbed in the reservoir between the master cylinder and the normally open solenoid valve.In a vehicle brake hydraulic pressure control device,The housing chamber communicates with the connector chamber and the electric motor, and a common vent hole that communicates the housing chamber, the connector chamber, and the electric motor with the outside is provided in the housing.It is characterized by that.
[0008]
  According to the configuration of the invention described in claim 1,The storage chamber communicates with the connector chamber and the electric motor, and the storage chamber, the connector chamber, and the electric motor communicate with the outside through a common vent hole provided in the housing. In this way, the connector chamber communicates with the storage chamber, and further communicates with the outside, so that the internal pressure of the connector chamber and the storage chamber can be made equal to the external pressure, and the change of the internal pressure can be suppressed more effectivelyTherefore, it prevents the seal failure due to the deformation of the connector housing and the suction of water due to the capillary phenomenon from the insulation tube of the external conductor and the gap between the conductors.soYes.
[0009]
  The invention according to claim 2A valve portion of a normally open solenoid valve interposed between the master cylinder and the wheel brake, and a valve portion of a normally closed solenoid valve interposed between the wheel brake and the reservoir are accommodated in a housing, and A synthetic resin cover that forms at least a storage chamber for storing a solenoid part of the valve between the housing and the housing is attached to one surface of the housing, and a first connector housing integrally connected to the cover; A cover-side connector comprising a plurality of first terminals that are at least connected to the solenoid portion and housed and supported in the first connector housing; and a second connector housing that is detachably engaged with the first connector housing; The external conductor-side connector is configured with a plurality of second terminals that are individually connected to the plurality of external conductors and housed and supported in the second connector housing. The first and second terminals are electrically connected to each other in the connector chamber formed between the two connector housings in the connected state of the cover side and external conductor side connectors, The insertion portion of the conducting wire into the second connector housing is sealed, and a pump for returning the brake fluid absorbed in the reservoir between the master cylinder and the normally open solenoid valve is driven on the other surface of the housing. In the vehicular brake hydraulic pressure control apparatus to which the electric motor is attached, the cover is provided with a communication hole that communicates the connector chamber with the storage chamber, and the motor connector that communicates with the electric motor is disposed on one surface of the housing. Through the through hole provided over the other surface and the inner surface of the through hole and the motor connector A vent passage communicating with the storage chamber is provided between the vents, and a vent hole communicating the vent path with the outside has an opening end of the vent hole toward the vent path facing a side surface of the motor connector. Provided in the housingWith featuresTo do.
  OrAccording to the configuration,A motor connector connected to the electric motor passes through a through hole provided on one side and the other side of the housing, and communicates with the storage chamber between the inner surface of the through hole and the motor connector. A ventilation hole that communicates with the outside of the ventilation path is provided in the housing with the opening end of the ventilation hole facing the ventilation path facing the side surface of the motor connector. In this way, the connector chamber communicates with the storage chamber, and further communicates with the outside.Make the internal pressure of the connector chamber and the storage chamber equal to the external pressure to reduce the change in internal pressure.EffectCan be effectively suppressedTherefore, it is possible to prevent seal failure due to deformation of the connector housing, and suction of water due to capillary action from the insulation tube of the external conductor and the gap between the conductors.it can.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.
[0011]
1 to 12 show one embodiment of the present invention. FIG. 1 is a brake hydraulic circuit diagram of a brake device for a passenger vehicle, FIG. 2 is a side view of the brake hydraulic pressure control device, and FIG. 4 is a sectional view taken along the line 5-5 in FIG. 4, FIG. 6 is a sectional view taken along the line 6-6 in FIG. 4, and FIG. 7 is a sectional view taken along the line 7 in FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 4, FIG. 9 is an enlarged view taken along the arrow 9 in FIG. 8, FIG. 10 is an enlarged cross-sectional view taken along line 10-10 in FIG. 2 is an enlarged cross-sectional view taken along line 11-11, and FIG. 12 is an enlarged view of a main part of FIG.
[0012]
First, in FIG. 1, a tandem master cylinder M includes first and second output ports 1 that generate brake fluid pressure in accordance with a pedaling force applied to a brake pedal P by a vehicle driver.₁1₂With left front wheel brake B₁, Right rear wheel brake B₂, Right front wheel brake B_ThreeAnd left rear wheel brake B_FourAnd the first and second output ports 1₁, 1₂First and second output hydraulic pressure paths 2 individually connected to each other₁, 2₂The brake fluid pressure control device 3 is provided between the brake fluid pressure control device 3 and the right and left rear wheel brake B.₂, B_FourIn between, the first and second proportional pressure reducing valves 4₁, 4₂Are interposed.
[0013]
Brake fluid pressure control device 3 is a front left wheel brake B₁, Right rear wheel brake B₂, Right front wheel brake B_ThreeAnd left rear wheel brake B_FourThe first, second, third and fourth normally open solenoid valves 5 individually corresponding to₁~ 5_FourAnd each normally open solenoid valve 5₁~ 5_FourFirst, second, third and fourth check valves 7 connected in parallel to each other₁~ 7_FourAnd each wheel brake B₁~ B_Four1st, 2nd, 3rd and 4th normally closed solenoid valves 6 corresponding individually to₁~ 6_FourAnd first and second output hydraulic pressure paths 2₁, 2₂First and second reservoirs 8 individually corresponding to each₁, 8₂And the first and second reservoirs 8₁, 8₂Intake valve 10₁, 10₂Plunger-type first and second pumps 11 connected to each other₁, 11₂And both pumps 11₁, 11₂Common electric motor 12 for driving the first and second pumps 11₁, 11₂Discharge valve 13₁, 13₂First and second dampers 14 connected via₁, 14₂And the first and second output hydraulic pressure paths 2₁, 2₂And the first and second dampers 14₁, 14₂The first and second orifices 15 respectively interposed between the first and second orifices 15₁, 15₂And each normally open solenoid valve 5₁~ 5_FourEach normally closed solenoid valve 6₁~ 6_FourAnd an electronic control unit 16 that controls the operation of the electric motor 12.
[0014]
First normally open solenoid valve 5₁Is the first output hydraulic pressure path 2₁And front left wheel brake B₁The second normally open solenoid valve 5 provided between₂Is the first output hydraulic pressure path 2₁And the first proportional pressure reducing valve 4₁3rd normally open type solenoid valve 5 provided between_ThreeIs the second output hydraulic path 2₂And right front wheel brake B_Three4th normally open type solenoid valve 5 provided in between_FourIs the second output hydraulic path 2₂And the second proportional pressure reducing valve 4₂Between.
[0015]
The first to fourth check valves 7₁~ 7_FourIs the corresponding wheel brake B₁~ B_FourEach normally open solenoid valve 5 so as to allow the flow of brake fluid from the engine to the master cylinder M.₁~ 5_FourConnected in parallel.
[0016]
First normally closed solenoid valve 6₁Is the front left wheel brake B₁And the first reservoir 8₁The second normally closed solenoid valve 6 provided in between₂Is the first proportional pressure reducing valve 4₁And the first reservoir 8₁A third normally closed solenoid valve 6 provided in between_ThreeIs the right front wheel brake B_ThreeAnd the second reservoir 8₂A fourth normally closed solenoid valve 6 provided in between_FourIs the second proportional pressure reducing valve 4₂And the second reservoir 8₂Between.
[0017]
By the way, the first normally open solenoid valve 5₁And the first normally closed solenoid valve 6₁Cooperate with the first control valve means V₁The second normally open solenoid valve 5₂And the second normally closed solenoid valve 6₂Cooperate with the second control valve means V₂And a third normally open solenoid valve 5_ThreeAnd the third normally closed solenoid valve 6_ThreeCooperates with the third control valve means V_ThreeAnd a fourth normally open solenoid valve 5_FourAnd the fourth normally closed solenoid valve 6_FourCooperates with the fourth control valve means V_FourConfigure.
[0018]
Such control valve means V₁~ V_FourThe electronic control unit 16 controls the master cylinder M and the wheel brake B during normal braking where each wheel is not likely to lock.₁~ B_FourWheel brake B₁~ B_FourAnd reservoir 8₁, 8₂It is controlled so as to cut off the gap. That is, each normally open solenoid valve 5₁~ 5_FourIs demagnetized and opened, and each normally closed solenoid valve 6₁~ 6_FourIs demagnetized and closed, and the first output port 1 of the master cylinder M₁The brake hydraulic pressure output from the first normally open solenoid valve 5₁Through left front wheel brake B₁And the second normally open solenoid valve 5₂And the first proportional pressure reducing valve 4₁Via right rear wheel brake B₂Act on. The second output port 1 of the master cylinder M₂The brake hydraulic pressure output from the third normally open solenoid valve 5_ThreeThrough right front wheel brake B_ThreeAnd the fourth normally open solenoid valve 5_FourAnd the second proportional pressure reducing valve 4₂Through left rear wheel brake B_FourAct on.
[0019]
When the wheel is about to enter the locked state during braking, each control valve means V₁~ V_FourThe control valve means corresponding to the wheel that is about to enter the locked state is controlled by the electronic control unit 16 by the master cylinder M and the wheel brake B.₁~ B_FourWheel brake B₁~ B_FourAnd reservoir 8₁, 8₂It is controlled to communicate with each other. That is, the first to fourth normally open solenoid valves 5₁~ 5_FourThe normally open solenoid valve corresponding to the wheel that is about to enter the locked state is excited and closed, and the first to fourth normally closed solenoid valves 6 are closed.₁~ 6_FourOf these, the normally closed solenoid valve corresponding to the wheel is excited and opened. As a result, a part of the brake fluid pressure of the wheel that is about to enter the locked state is transferred to the first reservoir 8.₁Or the second reservoir 8₂The brake fluid pressure of the wheel that has been absorbed by the vehicle and is about to enter the locked state is reduced.
[0020]
When the brake fluid pressure is kept constant, each control valve means V₁~ V_FourThe wheel brake B is controlled by the electronic control unit 16.₁~ B_FourMaster cylinder M and reservoir 8₁, 8₂It is controlled to be in a state of being cut off from. That is, the normally open solenoid valve 5₁~ 5_FourIs excited and closed, and the normally closed solenoid valve 6₁~ 6_FourWill be demagnetized and closed. When the brake fluid pressure is further increased, the normally open solenoid valve 5₁~ 5_FourIs demagnetized and opened, and the normally closed solenoid valve 6₁~ 6_FourMay be demagnetized and closed.
[0021]
Thus, each control valve means V₁~ V_FourIs controlled by the electronic control unit 16 so that braking can be efficiently performed without locking the wheels.
[0022]
Meanwhile, the electric motor 12 is operated by the electronic control unit 16 during the antilock brake control as described above. As the electric motor 12 operates, the first and second pumps 11₁, 11₂Is driven, the first and second reservoirs 8₁, 8₂The brake fluid absorbed by the first and second pumps 11₁, 11₂And then the first and second dampers 14₁, 14₂The first and second orifices 15 are discharged to the side.₁, 15₂1st and 2nd output hydraulic pressure paths 2₁, 2₂To reflux. By such a recirculation of the brake fluid, the first and second reservoirs 8₁, 8₂It is possible to prevent an increase in the depression amount of the brake pedal P due to the absorption of the brake fluid. Moreover, the first and second pumps 11₁, 11₂The pulsation of the discharge pressure of the first and second dampers 14₁, 14₂, And first and second orifices 15₁, 15₂Therefore, the operation feeling of the brake pedal P is not hindered by the reflux.
[0023]
2 to 4, the brake hydraulic pressure control device 3 includes a housing 20 formed in a block shape by, for example, an aluminum alloy, and the first to fourth normally open electromagnetic valves 5 are provided in the housing 20.₁~ 5_FourThose normally open solenoid valves 5₁~ 5_FourAnd control valve means V₁~ V_Four1st to 4th normally closed solenoid valve 6 constituting₁~ 6_Four,, 1st to 4th check valve 7₁~ 7_Four, First and second reservoirs 8₁, 8₂, First and second dampers 14₁, 14₂, First and second orifices 15₁, 15₂, And first and second pumps 11₁, 11₂Is provided. A synthetic resin cover 21 is attached to one surface 20 a of the housing 20, and a motor case 22 of the electric motor 12 is attached to the other surface 20 b of the housing 20 on the side opposite to the cover 21.
[0024]
Referring to FIGS. 5 to 7 together, the first to fourth normally open solenoid valves 5₁~ 5_FourThe solenoid part 5b is connected to the valve part 5a, and each valve part 5a is formed in four mounting holes 23 provided in the upper part of the housing 20 so as to open to one surface 20a of the housing 20. Are accommodated, and each solenoid portion 5b projects from one surface 20a of the housing 20. The first to fourth normally closed solenoid valves 6₁~ 6_FourThe solenoid part 6b is connected to the valve part 6a, and each valve part 6a is formed in four mounting holes 24 provided in the upper part of the housing 20 so as to open to one surface 20a of the housing 20. Are accommodated, and each solenoid portion 6b projects from one surface 20a of the housing 20. Moreover, the mounting holes 23 are provided in the housing 20 side by side in the horizontal direction, whereas the mounting holes 24 are provided in the housing 20 side by side in the horizontal direction below the mounting holes 23. -4th normally open type solenoid valve 5₁~ 5_FourAnd the first to fourth normally closed solenoid valves 6₁~ 6_FourAre mounted on the housing 20 in parallel vertically.
[0025]
First reservoir 8₁Control valve means V₁, V₂At a position corresponding to the second reservoir 8.₂Control valve means V_Three, V_FourIs disposed in the lower part of the housing 20 at a position corresponding to the above. Thus, both reservoirs 8₁, 8₂As shown in FIG. 5, a reservoir chamber 27 is formed between a bottomed reservoir hole 26 provided in the housing 20 so as to open on one surface 20a of the housing 20 and a closed end of the reservoir hole 26. The bottomed cylindrical piston 28 slidably fitted into the reservoir hole 26, the receiving member 29 fitted to the open end of the reservoir hole 26, and the reservoir member 26 from the reservoir hole 26. The retaining ring 30 is attached to the opening edge of the reservoir hole 26 so as to prevent the withdrawal, and the reservoir spring 31 is contracted between the receiving member 29 and the piston 28. 8₁, 8₂The reservoir chambers 27 are first and second pumps 11.₁, 11₂Connected to.
[0026]
First damper 14₁Control valve means V₁, V₂And the first reservoir 8₁The second damper 14 is disposed in the housing 20 at a position corresponding to the gap therebetween.₂Control valve means V_Three, V_FourAnd the second reservoir 8₂It arrange | positions in the housing 20 in the position corresponding to between. Thus, both dampers 14₁, 14₂6 and 7, a damper chamber is provided between a bottomed damper hole 33 provided in the housing 20 so as to open to one surface 20 a of the housing 20 and a closed end of the damper hole 33. A piston 35 that is slidably fitted into the damper hole 33, a receiving member 36 that is fitted to the opening end of the damper hole 33, and the receiving member 36 that is pulled out of the damper hole 33. Each of the damper chambers 14 includes a retaining ring 37 that is attached to the opening edge of the damper hole 33 so as to prevent it, and a damper spring 38 that is contracted between the receiving member 36 and the piston 35.₁, 14₂The damper chamber 34 of the first and second pumps 11₁, 11₂Connected to.
[0027]
First and second pump 11₁, 11₂Are the first to fourth normally closed solenoid valves 6₁~ 6_FourAnd the first and second reservoirs 8₁, 8₂Between the first to fourth normally closed solenoid valves 6₁~ 6_FourAre arranged in the housing 20 with a coaxial operation axis along the arrangement direction of the two pumps 11.₁, 11₂Are provided at positions spaced apart from each other. Both pumps 11₁, 11₂The suction valve 10₁, 10₂And discharge valve 13₁, 13₂Are built in.
[0028]
On the other hand, the motor case 22 of the electric motor 12 includes a bottomed cylindrical case body 22a and a lid body 22b disposed so as to close the open end of the case body 22a. The body 22b is fastened to the other surface 20b of the housing 20 by a plurality of screw members 41. The output shaft 42 of the electric motor 12 rotatably passes through the lid body 22b and extends into a concave portion 43 provided in the housing 20, and includes a ball bearing 44 held by the lid body 22b, and a concave portion 43. It is supported by a ball bearing 45 held at the inner end of the bearing. In addition, the output shaft 42 is provided with an eccentric shaft portion 42a at an intermediate portion located between both the bearings 44 and 45, and a ball bearing 46 mounted on the outer periphery of the eccentric shaft portion 42a includes first and second bearings. Pump 11₁, 11₂Are brought into contact with the tips of the plungers 40. Therefore, if the output shaft 42 is rotated by the operation of the electric motor 12, an eccentric motion is given to the ball bearing 46 through the eccentric shaft portion 42a, and thereby a pump operation is given to each plunger 40.
[0029]
The cover 21 includes the first to fourth normally open solenoid valves 5.₁~ 5_FourIn the first to fourth normally closed solenoid valves 6.₁~ 6_FourIn which the first and second reservoirs 8 are housed.₁, 8₂And the first and second dampers 14 in₁, 14₂Are accommodated to one surface 20a of the housing 20 by a plurality of screw members 49...
[0030]
The middle part in the cover 21 includes first to fourth normally open solenoid valves 5.₁~ 5_FourAnd the first to fourth normally closed solenoid valves 6.₁~ 6_FourIs provided with a support portion 50 for fitting and supporting each of the solenoid portions 6b, and a plurality of openings 52 are formed in the support portion 50 so that the storage chamber 48 is not partitioned by the support portion 50. Is done.
[0031]
The electronic control unit 16 is configured by mounting a semiconductor chip 54 or the like on a substrate 53 on which an electric circuit is printed, and the substrate 53 is fastened to the support portion 50 on the side opposite to the housing 20 in the cover 21. . Moreover, a plurality of conductive metal bus bars 51... Are embedded in the support portion 50, and the first to fourth normally open solenoid valves 5 are formed by these bus bars 51.₁~ 5_FourAnd the first to fourth normally closed solenoid valves 6.₁~ 6_FourAre connected to the electronic control unit 16.
[0032]
The cover 21 is integrally formed with a protruding portion 21a that protrudes laterally from the housing 20, and the protruding portion 21a is provided with a male cover-side connector 55.
[0033]
The cover-side connector 55 includes a first connector housing 56 formed in a box shape integrally with the protruding portion 21 a of the cover 21, and a plurality of male molds housed and supported in the first connector housing 56. The first connector terminals 57 are connected to the solenoid parts 5b, 6b through the electronic control unit 16 and the bus bar 51, and the electronic control unit. 16 and the motor connector 58 are connected to the electric motor 12.
[0034]
In FIG. 8, a through hole 59 extending between one surface 20a and the other surface 20b of the housing 20 is formed in the lower portion of the housing 20, and the motor connector 58 penetrates the through hole 59 so as to be inserted and removed.
[0035]
9 and 10 together, a boss 61 having a bottomed first positioning hole 60 that is coaxial with the through hole 59 is integrally formed in a portion corresponding to the through hole 59 of the cover 21. In the first positioning hole 60, a pair of positive and negative second connection terminals 62, 62 respectively connected to two of the first connector terminals 57... Via the electronic control unit 16 are fixedly arranged in parallel. The
[0036]
Further, a brush holder 63 made of synthetic resin that seals between the case main body 22a and the lid body 22b is fitted on the inner periphery of the case main body 22a in the electric motor 12, and is coaxial with the through hole 59. A boss 65 having a bottom second positioning hole 64 is formed integrally with the brush holder 63, and a pair of positive and negative second connection terminals 66 connected to the energization coil in the electric motor 12 is fixed in the second positioning hole 64. Side by side. Moreover, the boss 65 is disposed so as to penetrate the cover body 22b and enter the through hole 59.
[0037]
The pair of positive and negative first connection terminals 62 and 62 and the pair of positive and negative second connection terminals 66 are all formed in a male shape, and the first and second connection terminals 62 and 66 that are positive electrodes, and the first that is a negative electrode. The second connection terminals 62 and 66 are connected through a single motor connector 58.
[0038]
The motor connector 58 includes a connector body 67 made of a synthetic resin and a pair of conductors 68 and 68 made of a heat resistant alloy supported on both side surfaces of the connector body 67. Both end portions of the connector main body 67 passing through the through hole 59 are fitted in the first and second positioning holes 60 and 64 so as not to rotate relative to each other, and axial movement is performed at the closed ends of the first and second positioning holes 60 and 64. Be regulated. The connector body 67 includes a pair of opposing support walls 67a and 67a, an insulating partition wall 67b that integrally connects the intermediate portions of the support walls 67a and 67a, and ribs that protrude from both surfaces of the insulating partition wall 67b. 67c and 67c are integrally provided, and the pair of conductors 68 and 68 are attached to the connector main body 67 on both sides of the insulating partition wall 67b.
[0039]
On the other hand, female connection portions 69, 69; 70,... Corresponding to the male first and second connection terminals 62, 62; 66,. The Therefore, the electronic control unit 16 and the electric motor 12 are electrically connected via the motor connector 58. Between the motor connector 58 and the inner surface of the through hole 59, the storage chamber 48 is provided. A ventilation path 73 leading to the lower part is formed.
[0040]
By the way, between the joint surfaces of the housing 20 and the cover 21, a motor connector 68, a normally open type electromagnetic valve 5 are provided.₁~ 5_FourNormally closed solenoid valve 6₁~ 6_Four, First and second reservoirs 8₁, 8₂, And the first and second dampers 14₁, 14₂A seal member 71 surrounding the motor connector 68 and the output shaft 43 is provided between the joint surfaces of the housing 20 and the electric motor 12. Therefore, even if rain water, washing water or the like enters between the joint surfaces of the housing 20, the cover 21 and the electric motor 12, at least the penetration to the motor connector 68 is prevented by the seal members 71 and 72. Is done.
[0041]
In FIG. 11, an external conductor side connector 76 provided in common at the ends of the plurality of external conductors 75, 75... Is detachably connected to the cover side connector 55 provided continuously with the cover 21. The second connector housing 77 of the external conductor side connector 76 has a fitting portion 77a fitted to the first connector housing 56 of the cover side connector 55, and the first connector housing 56 between the fitting portion 77a. Is integrally formed with a synthetic resin and can be removably engaged with the first connector housing 56 of the cover-side connector 55.
[0042]
When the external conductor side connector 76 is connected to the cover side connector 55, a connector chamber is provided between the first connector housing 56 of the cover side connector 55 and the fitting portion 77a of the second connector housing 77 of the external conductor side connector 76. 78 is formed, and in order to prevent water from entering between the contact surfaces of the first and second connector housings 56 and 77 in the connector chamber 78, the first connector housing is formed on the outer surface of the fitting portion 77a. An annular seal member 79 that elastically contacts the inner surface of 56 is mounted.
[0043]
In the fitting part 77a of the second connector housing 77 of the external conductor side connector 76, a plurality of first connector terminals 57, 57... Are provided with openings at both ends, and second connector terminals 81, 81, which are formed in a female shape so that the first connector terminals 57, 57,. , 80...
[0044]
The external conductors 75, 75... Are formed by covering the conductors 82, 82... Made of conductive metal with insulating tubes 83, 83. The second connector terminals 81, 81... Are fixed to the conductors 82, 82... Drawn from the insulating tubes 83, 83... At the ends of the external conductors 75, 75.
[0045]
In addition, annular seal members 84, 84... Are interposed between the outer surfaces of the insulating tubes 83, 83... Of the external conductors 75, 75. The external conductors 75, 75... Are supported by the second connector housing 77 via the seal members 84, 84. Further, the sealing members 84, 84... Prevent water from entering the connector chamber 78 through the connection holes 80, 80... From the insertion portions of the external conductors 75, 75.
[0046]
The connecting portion of each of the external conductors 75, 75... To the external conductor side connector 76 is covered with a boot 85 made of synthetic resin.
[0047]
The cover 21 is provided with a communication hole 86 that allows the connector chamber 78 formed between the cover side and the external conductor side connectors 55 and 76 to communicate with the storage chamber 48 formed between the cover 21 and the housing 20. On the other hand, an air passage 73 formed between the motor connector 58 and the through-hole 59 communicates with the lower portion of the housing 20, so that the connector chamber 78 also communicates with the air passage 73.
[0048]
2 and 3, the body frame 88 has a support plate portion 89 a that faces the lower surface of the housing 20, and is connected to both ends of the support plate portion 89 a at right angles to face both side surfaces of the housing 20. A bracket 89 including a pair of support plate portions 89b and 89b is fixed, and the housing 20 is attached to the support plate portion 89a via the mounting means 90 and the support plate portion via the mounting means 91 and 91. It is attached to 89b and 89b.
[0049]
Referring also to FIG. 12, the mounting means 90 provided between the lower portion of the housing 20 and the support plate portion 89a of the bracket 89 has an axis extending vertically and is fixed on the support plate portion 89a. The mounting shaft 92 and a cylindrical mounting rubber 93 into which the mounting shaft 92 is fitted are formed. On the other hand, a mounting hole 94 into which the mount rubber 93 is fitted is provided at a lower portion of the housing 20 at a portion located below the through hole 59.
[0050]
The housing 20 is provided with a vent hole 95 coaxially with the mounting hole 94. The vent hole 95 is formed at the outer end of a small-diameter hole portion 95a having an inner end opened at an intermediate portion of the through hole 59. The large-diameter hole portion 95b having a diameter larger than that of the small-diameter hole portion 95a but smaller than that of the mounting hole 94 is formed so as to form an annular step portion 95c facing the outside between the two hole portions 95a and 95b. It consists of coaxial lines.
[0051]
That is, the vent hole 95 is provided in the lower part of the housing 20 so that the inner end thereof is opened in the middle part of the through hole 59 and the outer end is coaxially connected to the mounting hole 94. The rubber 93 is fitted into the attachment hole 94 until it contacts an annular step 96 formed between the ventilation hole 95 and the attachment hole 94.
[0052]
For example, a blocking member 97 formed into a circular sheet shape is made in contact with the stepped portion 95c of the vent hole 95 by a breathable waterproof material represented by, for example, a product name Gore-Tex. On the other hand, a pressing member 99 having a through hole 98 at the center and formed in a disk shape with metal is press-fitted into the large-diameter hole portion 95 b of the vent hole 95. The pressing member 99 is integrally provided with a circular protrusion 99a protruding toward the closing member 97, and the closing member 97 is sandwiched between the protrusion 99a and the step portion 95c of the pressing member 99. The That is, the vent hole 95 is closed by the closing member 97.
[0053]
In the housing 20, an intermediate chamber 100 is formed between the mounting means 90 and the closing member 97, and a ventilation groove 101 that allows the intermediate chamber 100 to communicate with the outside is provided on the outer surface of the mount rubber 93 in the mounting means 90. .
[0054]
Mounting protrusions 102, 102 are integrally projected on both sides of the upper portion of the housing 20, and these mounting protrusions 102, 102 are provided with mounting means 91, 91 above the support plate portions 98 b, 98 b of the bracket 98. Mounted through.
[0055]
The mounting means 91 includes a mounting bolt 103 having an axis extending substantially horizontally and supported on the support plate portion 89b, and a cylindrical mounting rubber 104 into which a part of the mounting bolt 103 is fitted. The mounting protrusion 102 is provided with a bottomed mounting hole 105 into which the mount rubber 104 is fitted.
[0056]
The mount bolt 103 includes a screw shaft portion 103a, a fitting shaft portion 103b that is coaxially and integrally connected to the screw shaft portion 103a, and a radially outward portion from the connecting portion of the screw shaft portion 103a and the fitting shaft portion 103b. And a flange portion 103c projecting from the bottom. On the other hand, a slit 106 opened upward is provided on the upper portion of the support plate portion 89b, and a portion of the screw shaft portion 103a near the flange portion 103c is inserted into the slit 106 from above. Thus, the nut 107 is screwed onto the screw shaft portion 103a, and the support plate portion 89b is sandwiched between the nut 107 and the flange portion 103c, so that the mount bolt 103 is fixed to the support plate portion 89b. Will be supported.
[0057]
Next, the operation of this embodiment will be described. First to fourth normally open solenoid valves 5₁~ 5_FourSolenoid part 5a ..., first to fourth normally closed solenoid valves 6₁~ 6_FourAre formed between the housing 20 and the cover 21 that is fastened to the housing 20 via the seal member 71. A vent hole 95 that allows the inner end to pass through the lower end of the storage chamber 48 through the vent path 73 is provided in the housing 20 with the outer end facing downward. The member 97 is blocked. Therefore, regardless of the communication structure between the inner end of the vent hole 95 and the storage chamber 48, the action of the closed portion 97 allows the storage chamber 48 to breathe while reliably preventing water from entering the storage chamber. In addition, the communication structure between the vent hole 95 and the storage chamber 48 can be simplified, and the processing applied to the housing 20 can be simplified.
[0058]
Moreover, in the middle of the through hole 59 provided between the both surfaces 20a and 20b of the housing 20 so as to allow the motor connector 58 for electrical connection between the electronic control unit 16 and the electric motor 12 to be inserted, The end is open. Accordingly, since the inner end of the vent hole 95 is communicated with the storage chamber 48 using the through hole 59 for electrical connection between the electronic control unit 16 and the electric motor 12, the vent hole 95 is communicated with the storage chamber 48. Therefore, the processing efficiency applied to the housing 20 can be further improved, and the housing 20 can be downsized, that is, the brake fluid pressure control device 3 can be downsized.
[0059]
An attachment hole 93 for fitting a cylindrical mount rubber 93 provided in one of the mounting means 90, 91, 91 for attaching the housing 20 to the vehicle body frame 88 is an outer end of the straight vent hole 95. A ventilation groove 101 is provided on the outer surface of the mount rubber 93 so as to be coaxially connected to the housing 20 and communicate with the outside of the intermediate chamber 100 formed between the closing member 97 and the mounting means 90. Accordingly, it is possible to improve the durability of the closing member 97 by allowing the mount rubber 93 to prevent the foreign material from contacting the closing member 48 while allowing the storage chamber 48 to breathe through the closing member 97. In addition, the processing efficiency applied to the housing 20 can be further improved by drilling the ventilation hole 95 coaxially.
[0060]
Further, the connector chamber 78 formed between the first and second connector housings 56 and 77 in the connected state of the cover side connector 55 and the external conductor side connector 76 is connected to the storage chamber 48 via the communication hole 86 provided in the cover 21. Communicate. Therefore, a change in the internal pressure of the connector chamber 78 is suppressed as much as possible, a seal failure occurs due to the deformation of the connector housings 56, 77 accompanying the change in internal pressure, or the external conductors 75, 75. Water suction into the connector chamber 78 due to capillary action from the gap between the insulating tubes 83 and the conductive wires 82 can be reliably prevented.
[0061]
In addition, the storage chamber 48 communicates with the outside while preventing the intrusion of water by the action of the closing member 97, so that the internal pressure of the connector chamber 78 and the storage chamber 48 is made equal to the external pressure, and the change of the internal pressure is further increased. It can suppress more effectively, and can prevent reliably the penetration | invasion of the water from the storage chamber 48 to the connector chamber 78. FIG.
[0062]
Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.
[0063]
For example, in the above embodiment, the vent hole 95 is closed with the closing member 97 made of a breathable waterproof material so that the storage chamber 48 communicates with the outside while preventing water from entering the storage chamber 48. A passage that communicates 48 with the outside may be formed as a maze to prevent water from entering.
[0064]
Further, the present invention can be applied not only to a passenger vehicle but also to a brake fluid pressure control device for a motorcycle.
[0065]
【The invention's effect】
  As described above, according to the invention of claim 1,The storage chamber communicates with the connector chamber and the electric motor, and the storage chamber, the connector chamber, and the electric motor communicate with the outside through a common vent hole provided in the housing. In this way, the connector chamber communicates with the storage chamber, and further communicates with the outside, so that the internal pressure of the connector chamber and the storage chamber can be made equal to the external pressure, and the change in the internal pressure can be more effectively suppressed. Therefore,Prevents poor seals due to deformation of the connector housing and suction of water due to capillarity from the insulation tube of the external conductor and the gap between the conductors.soYes.
[0066]
  According to the invention of claim 2,A motor connector connected to the electric motor passes through a through hole provided on one side and the other side of the housing, and communicates with the storage chamber between the inner surface of the through hole and the motor connector. A ventilation hole that communicates with the outside of the ventilation path is provided in the housing with the opening end of the ventilation hole facing the ventilation path facing the side surface of the motor connector. In this way, the connector chamber communicates with the storage chamber, and further communicates with the outside.Make the internal pressure of the connector chamber and the storage chamber equal to the external pressure to reduce the change in internal pressure.EffectCan be effectively suppressedTherefore, it is possible to prevent seal failure due to deformation of the connector housing, and suction of water due to capillary action from the insulation tube of the external conductor and the gap between the conductors.it can.
[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 side view of the brake fluid pressure control device.
FIG. 3 is a view taken in the direction of arrow 3 in FIG. 2;
4 is a view taken in the direction of arrow 4 in FIG. 2;
5 is a cross-sectional view taken along line 5-5 of FIG.
6 is a cross-sectional view taken along line 6-6 of FIG.
7 is a cross-sectional view taken along line 7-7 of FIG.
8 is a cross-sectional view taken along line 8-8 in FIG.
FIG. 9 is an enlarged view of a portion indicated by an arrow 9 in FIG. 8;
10 is an enlarged sectional view taken along line 10-10 of FIG.
11 is an enlarged cross-sectional view taken along line 11-11 in FIG. 2;
12 is an enlarged view of the main part of FIG. 9. FIG.
[Explanation of symbols]
5₁, 5₂, 5_Three, 5_Four... Normally open solenoid valves
5a, 6a ... Valve part
5b, 6b ... Solenoid part
6₁, 6₂, 6_Three, 6_Four... Normally closed solenoid valves
8₁, 8₂... Reservoir
20 ... Housing
20a ... one side of the cover
21 ... Cover
48 ... Storage room
55 ... Cover side connector
56... First connector housing
57 ... 1st terminal
75 ... External conductor
76 ... External conductor side connector
77 ... Second connector housing
78 ... Connector room
81 ... Second terminal
86 ... Communication hole
B₁, B₂, B_Three, B_Four... Wheel brakes
M ... Master cylinder

Claims (2)

Valve portion (5a) of normally open solenoid valve (5 ₁ , 5 ₂ , 5 ₃ , 5 ₄ ) interposed between master cylinder (M) and wheel brake (B ₁ , B ₂ , B ₃ , B ₄ ) ), And a valve portion (6 ₁ , 6 ₂ , 6 ₃ , 6 ₄ ) of a normally closed solenoid valve (6 ₁ , 6 ₂ , 6 ₃ , 6 ₄ ) interposed between the wheel brakes (B _{1 to} B ₄ ) and the reservoirs (8 ₁ , 8 ₂ ) 6a) is housed in a housing (20), the respective solenoid valves (5 ₁ to 5 _{4, 61} through 65 ₄₎ of said housing accommodating chamber (48) to the solenoid portion (5b, 6b) at least accommodating ( 20), a synthetic resin cover (21) formed between the first connector housing (56) is attached to one surface (20a) of the housing (20), and is integrally connected to the cover (21). And a first connector housing (at least connected to each solenoid part (5b, 6b)). 6) A cover-side connector (55) is constituted by a plurality of first terminals (57) housed and supported in the second connector housing (77) which is detachably engaged with the first connector housing (56). ) And a plurality of second terminals (81) housed and supported in the second connector housing (77) individually connected to the plurality of external conductors (75), the external conductor side connector (76) is constituted, The first and second terminals (57, 81) are provided in a connector chamber (78) formed between the connector housings (56, 77) in a connected state of the cover side and the external conductor side connectors (55, 76). mutually electrically connected, said insertion portion into the second connector housing (77) of the two connector housings (56,77) and between each external conductor (75) is sealed, respectively, further wherein c The Zing (20), the reservoir the master cylinder has been the brake fluid absorbed (8 _1, 8 ₂₎ (M) and the normally open solenoid valves (5 _1, 5 _2, 5 _3, 5 ₄₎ between In the vehicle brake hydraulic pressure control device to which the electric motor (12) for driving the pumps (10 ₁ , 10 ₂ ) to be recirculated is attached ,
The storage chamber (48) communicates with the connector chamber (78) and the electric motor (12). The storage chamber (48), the connector chamber (78), and the electric motor (12) are externally connected. The vehicle brake fluid pressure control device is characterized in that a common ventilation hole (95) communicating with the vehicle is provided in the housing (20) . Valve portion (5a) of normally open solenoid valve (5 ₁ , 5 ₂ , 5 ₃ , 5 ₄ ) interposed between master cylinder (M) and wheel brake (B ₁ , B ₂ , B ₃ , B ₄ ) ), And a valve portion ( 6 ₁ , 6 ₂ , 6 ₃ , 6 ₄ ) of a normally closed solenoid valve (6 ₁ , 6 ₂ , 6 ₃ , 6 ₄ ) interposed between the wheel brakes (B _{1 to} B ₄ ) and the reservoirs (8 ₁ , 8 ₂ ) 6a) is housed in a housing (20), the respective solenoid valves (5 ₁ to 5 _{4, 61} through 65 ₄₎ of said housing accommodating chamber (48) to the solenoid portion (5b, 6b) at least accommodating ( 20), a synthetic resin cover (21) formed between the first connector housing (56) is attached to one surface (20a) of the housing (20), and is integrally connected to the cover (21). And a first connector housing (at least connected to each solenoid part (5b, 6b)). 6) A cover-side connector (55) is constituted by a plurality of first terminals (57) housed and supported in the second connector housing (77) which is detachably engaged with the first connector housing (56). ) And a plurality of second terminals (81) housed and supported in the second connector housing (77) individually connected to the plurality of external conductors (75), the external conductor side connector (76) is constituted, The first and second terminals (57, 81) are provided in a connector chamber (78) formed between the connector housings (56, 77) in a connected state of the cover side and the external conductor side connectors (55, 76). Electrically connected to each other, the insertion portions between the two connector housings (56, 77) and the external conductors (75) into the second connector housing (77) are respectively sealed. Managing the other side of (20) (20b), said reservoir (8 _1, 8 ₂₎ absorbed brake fluid to the master cylinder (M) and the normally open solenoid valves (5 _1, 5 _2, 5 ₃ , 5 ₄ ) In a vehicle brake hydraulic pressure control device to which an electric motor (12) for driving a pump (10 ₁ , 10 ₂ ) to be refluxed is attached,
The cover (21) is provided with a communication hole (86) for communicating the connector chamber (78) with the storage chamber (48).
A motor connector (58) connected to the electric motor (12) passes through a through hole (59) provided in the housing (20 ) across one surface (20a) and the other surface (20b), Between the inner surface of the through hole (59) and the motor connector (58), an air passage (73) communicating with the storage chamber (48) is provided,
A vent hole (95) for communicating the vent path (73) with the outside has an open end of the vent hole (95) toward the vent path (73) facing the side surface of the motor connector (58). A brake fluid pressure control device for a vehicle , which is provided in the housing (20) .

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