JP3122598B2 - Electronic control unit integrated with hydraulic unit in anti-lock brake system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic unit for an anti-lock brake system for a vehicle, which adjusts brake fluid pressure during sudden braking or braking on a slippery road surface to prevent wheels from locking. The present invention relates to a body-type electronic control unit.

[0002]

2. Description of the Related Art For example, as one of the systems for improving the safety of an automobile, there is an anti-lock brake system for preventing wheels from locking during sudden braking or braking on a slippery road surface. In recent years, many automobiles employing such an anti-lock brake system have been produced with high performance of automobiles.

An anti-lock brake system of this type includes a rotation detecting device for detecting a rotation state of each wheel, an electronic control unit for controlling a brake fluid pressure so that the wheels are not locked, and a control signal from the electronic control unit. It is provided with a hydraulic unit and the like for adjusting the brake fluid pressure on the wheel side.

The electronic control unit receives a detection signal sent from the rotation detecting device, and monitors whether or not there is a wheel in a locking direction when a brake is applied based on the detection signal. If there is a wheel that is determined to be in the locking direction, the hydraulic unit is controlled to reduce the brake fluid pressure on the wheel cylinder of the corresponding wheel, and that the possibility of locking on that wheel has been avoided. When it is determined, the brake fluid pressure is increased again.

[0005] Further, by integrating the electronic control unit and the hydraulic unit in the engine room, an electronic control unit integrated with a hydraulic unit in an anti-lock brake system for increasing the indoor space and simplifying harness work. A unit has been proposed. For example, JP-A-6-2
No. 39217, as disclosed.

[0006]

However, according to the hydraulic control unit-integrated electronic control unit disclosed in the above publication, the male terminals as connection terminals of the solenoid valves provided in the hydraulic unit are respectively provided on the lower surface of the hydraulic housing. Female terminals as connection terminals are provided in the corresponding electronic control unit in a downwardly projecting shape, and when the hydraulic unit is integrally connected to the electronic control unit, each male terminal on the solenoid valve side is provided. And the female terminals on the electronic control unit side are connected to each other.

Therefore, during quality control and transport of the hydraulic unit before assembly with the electronic control unit, the male terminal directly projecting from the lower surface of the hydraulic housing is damaged by contact with other members or collision. Was highly likely to be caused.

In view of the above problems, it is an object of the present invention to provide an electronic control unit integrated with a hydraulic unit in an antilock brake system for preventing a male terminal projecting from a hydraulic housing from being damaged. .

[0009]

A technical means for achieving the above object is to provide a rotation detecting device for detecting a rotation state of each wheel of an automobile, and a solenoid valve through a solenoid coil in a hydraulic housing by an electronic control signal. A hydraulic unit including a motor for driving a pump for controlling a brake fluid pressure of each wheel to a wheel cylinder by controlling opening and closing, and for circulating brake fluid to a master cylinder; and An electronic control unit for generating the control signal for controlling the brake fluid pressure based on the power supply / supply to a solenoid and a motor relay incorporated in the electronic control unit;
It is provided with a fail-safe relay for shutting off and a motor relay for supplying / cutting power to the motor, and by mechanically connecting a hydraulic unit on the electronic control unit so as to project downward from the lower surface of the hydraulic housing. The male terminal on the solenoid coil side is connected to the connection terminal on the electronic control unit side in a hydraulic unit integrated electronic control unit in the antilock brake system, wherein the male terminal on the solenoid coil side and the electronic control unit side It has a U-shaped female-female relay terminal that is bent into a U-shape having female connection portions at both ends for connecting male terminals connected to the printed mounting board, and a solenoid female connector composed of a resin housing, With moving parts
U-shaped female connection to the male terminal on the solenoid coil side
The female connection part of the female relay terminal is faston-shaped and
Jig is not fixed, and the electronic control unit is
U-shaped female-female relay terminal
The connection part is tongue-shaped and fixed to the resin housing.
Hydraulic unit via the solenoid female connector.
And the electronic control unit are mechanically connected
The male terminal on the solenoid coil side and the electronic control unit
It is at the point where it is connected .

[0010]

Further, a projection is formed on the resin housing of the solenoid female connector, a hole is formed on the hydraulic housing at a position corresponding to the projection, and the projection of the solenoid female connector is press-fitted into the hole to thereby provide hydraulic pressure. It may be structured to be mechanically connected to the housing.

The male terminal on the electronic control unit side may be U-shaped, and the side not connected to the solenoid female connector may be soldered to a printed circuit board.

Further, the resin housing of the solenoid male connector for fixing the male terminal on the electronic control unit side may have a structure in which a metal electronic control unit case, a lock structure and a retaining structure are provided.

A projection is formed on the resin housing of the solenoid male connector, and a hole is formed at a position corresponding to the projection on the printed circuit board and the electronic control unit case, and the projection is inserted into each hole at the time of assembly. In this case, the structures may be positioned relative to each other.

Further, the resin housing of the solenoid female connector is provided with a holding flange portion for holding a rubber ring along a lower surface of the hydraulic housing, and when the electronic control unit and the hydraulic unit are integrally connected, the holding flange is provided. The structure may be such that a seal step portion in which the flange portion is fitted and the rubber ring is in close contact with each other is formed at a corresponding position of the electronic control unit case.

[0016]

According to the present invention, the solenoid female connector includes a U-shaped female-female relay terminal which is bent into a U-shape having female connection portions at both ends, and one of the female-female relay terminals has a female connection portion. The male terminal, which is protruded from the hydraulic housing, is connected, and the male terminal on the electronic control unit side is connected to the other female connection part of the female-female relay terminal. With the male terminal on the solenoid coil side connected to one female connection part of the female-female relay terminal of the solenoid female connector, if quality control and transport of the hydraulic unit are performed, the male terminal and relay terminal It is not exposed in the form of a protrusion, and can be protected by the resin housing. Damage due to contact with other members or collision can be effectively prevented, and quality control is easy. It made.

Further, by using the U-shaped female-female relay terminal, positional tolerance can be absorbed in the connection between the male terminal on the solenoid coil side and the male terminal on the electronic control unit side in the hydraulic housing. In addition, it is possible to secure a large degree of freedom in positioning the electronic control unit and the hydraulic unit.

Further, since the female-female relay terminal is bent in a U-shape, the height can be reduced.

In the U-shaped female-female relay terminal of the solenoid female connector, the female connection part to be connected to the male terminal on the solenoid coil side, which is a movable part, has a faston shape and is not fixed to the resin housing. The female connection part to be connected to the male terminal has a tongue shape and is fixed to the resin housing, so when brake fluid pressure acts on the master cylinder, the solenoid coil side male terminal moves up and down slightly. The male terminal on the coil side is connected to one of the female-female relay terminals, which is a faston-shaped female connection part with a high contact pressure, and since this female connection part is not fixed to the resin housing, these male terminals and the female connection part It can move up and down integrally to prevent relative sliding, effectively preventing fretting corrosion.

Further, a protrusion is formed in the resin housing of the solenoid female connector, a hole is formed in the hydraulic housing at a position corresponding to the protrusion, and the protrusion of the solenoid female connector is press-fitted into the hole to form the hydraulic housing. If it is configured to be mechanically connected to the motor, it can be easily positioned and connected easily by press-fitting. Moreover, the structure is simple, and a small-sized connecting structure can be provided at low cost.

Also, if the male terminal on the electronic control unit side is U-shaped and the side not connected to the solenoid female connector is structured to be soldered to a printed circuit board, the female connection of the female-female relay terminal can be inserted and removed. In addition, stress relaxation of the soldered portion between the male terminal and the printed circuit board can be achieved against thermal expansion and contraction.

Further, if the resin housing of the solenoid male connector for fixing the male terminal on the electronic control unit side is made of a metal electronic control unit case and a locking structure or a retaining structure, the solenoid female connector can be inserted into the solenoid male connector at the time of insertion. At the time of removal, the resin housing is effectively fixed to the electronic control unit case, so that stress at the connection between the printed circuit board and the male terminal can be relaxed.

Also, a projection is formed on the resin housing of the solenoid male connector, and a hole is formed at a position corresponding to the projection on the printed circuit board and the electronic control unit case, and the projection is inserted into each hole during assembly. With this structure, the solenoid male connector can be directly positioned with respect to the electronic control unit case, and can also be effectively used as a positioning when the printed mounting board and the solenoid male connector are temporarily fixed.

Further, the resin housing of the solenoid female connector is provided with a holding flange portion for holding a rubber ring along the lower surface of the hydraulic housing, and when the electronic control unit and the hydraulic unit are integrally connected, the holding flange portion is provided. If the seal step is formed at the corresponding position of the electronic control unit case where the part is fitted and the rubber ring is in close contact with the electronic control unit case, the rubber ring can be easily attached, and the assembling work can be performed. Performance can be improved.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 to 5, reference numeral 1 denotes an electronic control unit, on which a hydraulic unit 2 is integrally connected. This constitutes a hydraulic unit integrated electronic control unit in the brake system. And
The electrical configuration of the anti-lock brake system is substantially the same as that of the related art.

The hydraulic unit 2 controls the opening and closing of four solenoid valves 4 provided in a rectangular parallelepiped hydraulic housing 3 to control the brake fluid pressure on the wheel cylinders of each wheel. The opening and closing of the valve 4 is controlled based on a control signal sent from an electronic control unit 6 provided in a case 5 of the electronic control unit 1. The hydraulic unit 2 is provided on one side of the hydraulic housing 3 with an outer cylindrical motor 7 for driving a plunger pump (not shown) to return the brake fluid to the master cylinder.

The hydraulic housing 3 includes the pump,
A flow control valve or a brake fluid flow path that operates in accordance with opening and closing of the solenoid valve 4 is incorporated. Further, the hydraulic housing 3 is provided on its upper surface with a piping port 8 for brake fluid for each wheel cylinder and a piping port 9 for brake fluid for the master cylinder.

The metal case 5 of the electronic control unit 1 is formed in a flat shape having substantially the same size as the hydraulic unit 2 in plan view, and an upper case 11 formed by die-casting an aluminum material. And a plate-shaped lower case 12 made of a sheet metal material.

The upper case 11 has a connector connecting portion 11b, which is located at both side edges on the upper surface side facing the motor 7, and to which a relay accommodating portion 11a and an external connector 14 for power supply are connected. Are integrally provided in an upwardly bulging shape, and the connector connection portion 11b is further extended laterally. That is, the connector connection portion 11b has a structure in which the connector connection portion 11b is provided in a so-called extended shape from a gap between the upper surface of the upper case 11 and the motor 7.

In the case 5, a printed circuit board 16, a motor relay 17, a fail-safe relay 18 and the like provided with appropriate circuits constituting the electronic control unit 6 are accommodated. As shown, upper case 1
The relays 17 and 18 are arranged at the position of one relay accommodating portion 11a, and the external connector 14 is arranged at the position of the connector connecting portion 11b.
Is connected to the connector terminal unit 19.

A vertical wall portion 1 as a case wall surface facing the hydraulic housing 3 of the connector connection portion 11b.
As shown in FIGS. 1, 5 and 6, a small hole-shaped vent 21 is provided in 1c. This vent 21
Is composed of a hole 22 formed in the wall portion 11c, and a gas permeable film 23 which is mounted so that the hole 22 is closed from the inner surface side. The gas permeable film 23 has gas permeability and water. It is mainly composed of a Teflon-based thin film 23a having a large number of micropores of about 4μ to 10μ so as not to pass through, and a holding frame 23b of polypropylene or polyester is thermocompression-bonded along the outer periphery thereof. I have.

The gas permeable membrane 23 is mounted on the inner surface of the hole 22 by using a double-sided adhesive tape 24. The gas permeable hole 21 has a gas-permeable, water-impermeable liquid-tight state. The structure is.

As shown in FIGS. 5, 7 and 8, a bolt insertion tube portion 26 extending to the lower case 12 is integrally provided on the lower surface side of the central portion of the upper case 11, and the bolt insertion tube is provided. A seal step 26a is formed along the inner peripheral edge of the lower end of the portion 26.
Are formed.

Then, the rubber ring 2 is attached to the seal step 26a.
7, the lower case 12 is mounted so as to close the lower opening 28 of the upper case 11 which is open downward, and the bolt insertion hole 29 on the lower case 12 side and the bolt insertion hole on the upper case 11 side. The electronic control unit 1 and the hydraulic unit 2 are integrally connected to each other by screwing a bolt 31 with a flange, which is a through bolt mounted from below, into the hydraulic housing 3. At this time, the bolt insertion cylinder 26 and the lower case 12 are
The space is sealed.

As shown in FIGS. 5, 9 to 11, a sealing step 32 is formed along the inner peripheral edge of the lower opening 28 of the upper case 11, into which the lower case 12 is fitted. A seal groove 32a is formed in the seal step portion 32 along the circumferential direction.
Are formed.

Then, the lower case 12 is fitted into the seal step 32 while the sealing agent 33 having adhesive property is filled in an overflow shape along the seal groove 32a (see FIG. 9) (FIG. 10). The lower edge of the lower opening 28 of the upper case 11 is caulked at a plurality of positions at appropriate intervals in the circumferential direction (see FIG. 11).
The lower case 12 is caulked. In addition, by the caulking connection, the sealing agent 33 is brought into close contact with both the upper case 11 and the lower case 12, and is adhered to each other in a tight manner to be sealed.

As shown in FIGS. 8 and 12, the hydraulic housing 3 is provided with a pair of buffer chambers 35 for temporarily storing brake fluid during an antilock brake operation. The buffer chamber 35 has a brake fluid storage chamber 35a into which the brake fluid flows, and a piston 36.
And a non-brake fluid storage chamber 35b on the opposite side partitioned by a hydraulic housing 3
It is provided facing the lower surface side. A cover 37 having a vent hole 37a is mounted below the non-brake liquid storage chamber 35b, and a return spring 38 is interposed between the piston 36 and the cover 37.

When the electronic control unit 1 and the hydraulic unit 2 are connected to each other, the air holes 37a
In order to allow the non-brake fluid storage chamber 35b and the outside air to communicate with each other, communication grooves 40 extending from the position of the buffer chamber 35 of the hydraulic housing 3 to the outside of the hydraulic housing 3 are formed on the upper case 11 respectively.

In FIG. 1 and FIG. 13, reference numeral 42 denotes a large-current electrical connection box constituting a drive circuit of the motor 7, which is provided with a busbar holding case 43 made of a resin molded body. The busbar holding case 43 has a connector at one end. Terminal unit 19
A connector side connecting portion 43a to which the male terminal for the motor is connected, a relay side connecting portion 43b to which the male terminal of the motor relay 17 side is connected to the other end side, and the motor 7 side at the center portion. A male terminal 45 (FIG. 14)
To FIG. 16) is connected.
3c.

Then, each connection part 43a, 43b, 43c
Inside, relay terminals 46 each having a female connection portion 46a at the top and bottom are mounted in a retaining shape, and each bus bar 47,
Male terminals 47a, 48a, and 49a as connection terminals provided on both ends of the 48 and 49 in an upwardly projecting shape are respectively connected to the lower female connection portions 46a of the corresponding relay terminals 46 from the lower side while being inserted. , Busbar holding case 43
It is held on the side by means such as locking or fixing.

As shown in FIG. 14, the male terminal 45 is provided at the lower part of the motor 7 so as to project downward.
An annular wall portion 51 is provided so as to surround the outer peripheral portion.
Then, with the rubber ring 52 attached along the inside of the annular wall portion 51, the motor-side connection portion 43c of the electric connection box 42 is mounted.
Are the insertion holes 53 of the printed circuit board 16 and the upper case 1
When the electronic control unit 1 and the hydraulic unit 2 are integrally connected to each other, each male terminal 45 is connected to the upper female connection portion of the relay terminal 46 when the electronic control unit 1 and the hydraulic unit 2 are integrally connected. 46a. In this connection state, the rubber ring 52 is compressed on the upper surface side of the upper case 11 so that the space between the annular wall portion 51 and the upper case 11 is sealed.

FIG. 17 shows a mounting structure of a heat generating component 55 such as a regulator and a converter mounted on the printed circuit board 16.
Are provided, and the heat generating component 55 is brought into contact with the conductor portion 56.
The printed circuit board 16 is screwed on the upper case 11 side with the conductor 56 in contact with the upper case 11.
And so on.

Each solenoid valve 4 provided in the hydraulic housing 3 has a male terminal 58 as a pair of connection terminals of each solenoid coil.
It is provided so as to protrude downward from the lower surface side (see FIG. 20).
The solenoid female connector 5 is connected to the solenoid female connector 59 shown in FIGS.
9 is connected to a solenoid male connector 60 provided on one end side of the printed circuit board 16 (FIGS. 1 and 20).
reference).

The solenoid female connector 59 has a flat flange base 59a as a flat holding flange formed of a synthetic resin or the like, and four relays provided in a downwardly projecting shape corresponding to each solenoid valve 4. It is made of a resin housing integrally provided with a solenoid connecting portion 59b as a terminal accommodating portion, and a pair of U-shaped female-female relay terminals 61 are respectively mounted in each solenoid connecting portion 59b in a locking manner.

As shown in FIGS. 19 and 20, each female-female relay terminal 61 has a female connecting portion 61a at both ends.
And an intermediate connecting portion 61b for connecting the female connecting portions 61a to each other, and is formed in a substantially U-shape bent at the intermediate portion. The female connection portions 61a on both sides are respectively provided with the terminal receiving recesses 59c of the solenoid connection portion 59b.
And the female connector 59a is locked by a locking portion 59e in a state where the connecting portion 61b and the solenoid female connector 59 have a slight gap in the vertical direction. ing. Here, the female-female relay terminal 61 is retained and held in the solenoid female connector 59 in a state where the female connecting portion 61a is allowed to slightly move in the vertical direction.

The male terminal 58 of the solenoid coil of the solenoid valve 4 can be inserted from above into one of the female connection portions 61a.
A is configured such that a male terminal 66 (see FIG. 20) described later can be inserted and connected from below through a terminal insertion hole 59d formed on the lower surface side of the solenoid connection portion 59b.

At this time, the male terminal 58 on the solenoid coil side
The female connector 61a to which the male terminal 66 of the electronic control unit 1 is connected has a tongue shape, and the female connector 61a to which the male terminal 66 of the electronic control unit 1 is connected has a tongue shape. The connecting portion 61a is locked and fixed in the above-mentioned retaining shape, and the female connecting portion 61a on the other male terminal 58 connection side is not fixed but is allowed to move up and down. The length S (see FIG. 19) of the connecting portion 61b connecting the two female connecting portions 61a is also affected when the solenoid coil side male terminal 58 connected to the female connecting portion 61a moves up and down. The length is set appropriately so that the female connection portion 61a to which the other male terminal 66 is connected does not move.

A positioning pin 63 as a pair of projections is provided on the upper surface side of the flange base portion 59a so as to project upward, and as shown in FIG. 20, each positioning pin 63 is formed on the lower surface side of the hydraulic housing 3. By press-fitting each of the corresponding positioning holes 64, the solenoid female connector 59 is positioned with respect to the hydraulic housing 3, and each male terminal 58 of each solenoid valve 4 is accommodated in each solenoid connection portion 59b. It is configured to be connected to the female connection portion 61a of the relay terminal 61.

Further, the outer peripheral edge of the flange base 59a constitutes a guide for the rubber ring 65. As shown in FIG. 20, the rubber ring 65 is mounted along the outer peripheral edge of the flange base 59a. The rubber ring 65 is arranged along a predetermined position on the lower surface of the hydraulic housing 3.

The solenoid male connector 60 is shown in FIG.
As shown in FIGS. 0 to 22, each of the fitting recesses 60a is formed of a resin housing molded from a flexible synthetic resin or the like, and each of the solenoid connection portions 59b of the solenoid female connector 59 is fitted from above. And each terminal insertion hole 59d of each solenoid connection portion 59b.
The male terminals 66 are provided in the fitting recesses 60a so as to protrude upward. The male terminal 66 is U
The other end of the male terminal 66 is connected to the circuit side of the printed circuit board 16 by soldering 66a.

Further, as shown in FIGS. 20 and 21, when the male solenoid connector 60 is fitted into the mounting hole 67 formed in the upper case 11, the solenoid male connector 60 is locked in a retaining manner by elastic deformation. An appropriate number of locking pieces 60b are formed on one side wall of each solenoid male connector 60, and constitute a lock structure for restricting the solenoid male connector 60 from being detached downward. At this time, as shown in FIG. 20, the projecting piece 60c of the solenoid male connector 60 comes into contact with the upper case 11 to prevent the solenoid male connector 60 from coming off when the solenoid female connector 59 is detached. Make up the structure.

Also, as shown in FIG.
A seal step 68 is formed on the periphery of the mounting hole 67 on the upper surface side, and each male terminal 58 of the solenoid valve 4 is connected to one of the female connection portions 61 a of the solenoid female connector 59.
And each of the solenoid connecting portions 59b is connected to each of the fitting recesses 60 of the solenoid male connector 60 in a state where the rubber ring 65 is mounted on the outer peripheral edge of the flange base portion 59a.
a, each male terminal 66 is inserted into each terminal insertion hole 5.
9d, the flanges 59a and the rubber ring 65 are fitted to the seal step 68 while being connected to the other female connection portions 61a through the integral connection of the electronic control unit 1 and the hydraulic unit 2. The rubber ring 65 is compressed between the hydraulic housing 3 and the seal step 68,
The space between the upper case 11 and the hydraulic housing 3 is sealed.

In this embodiment, the integral connection between the electronic control unit 1 and the hydraulic unit 2 is performed by penetrating the flanged bolt 31 and the upper case 11 as shown in FIG. It is structured to be connected to each other by three bolts 70 which are screwed to the hydraulic housing 3.

As shown in FIG. 23, a positioning projection 60d is formed on the projecting piece 60c of the solenoid male connector 60, and the printed mounting board 16 and the upper case 1 are formed.
Positioning holes 71 and 72 are respectively formed at positions corresponding to the one positioning protrusion 60d, and the positioning protrusions 60d are inserted into the positioning holes 71 and 72 at the time of assembly so as to be positioned with respect to each other.

The embodiment of the present invention is configured as described above. The connector terminal unit 19 is fixedly attached to the connector connection portion 11b of the upper case 11 with screws or the like, and is inserted into the mounting hole 67 of the upper case 11. The solenoid male connector 60 is fitted and the locking piece 60b is locked in a locking manner. In this state, the printed circuit board 16 provided with the motor relay 17, the fail-safe relay 18 and the like is screwed into the upper case 11. Further, as shown in FIG. 20, the projecting piece 60c of the solenoid male connector 60 is fixed to the printed circuit board 16 with a screw 75 as shown in FIG.

The connector 43 and the relay 43b of the electric connection box 42 are connected to the male terminal of the connector terminal unit 19 and the male terminal of the motor relay 17, respectively. The motor-side connection part 43c is inserted through the insertion hole 53 and the insertion hole 54, and the lower case 12 is swaged and connected to the lower opening 28 of the upper case 11. Unit 1 is assembled.

A solenoid female connector 59 is connected to the male terminal 58 of each solenoid valve 4 of the hydraulic unit 2 in advance. The hydraulic unit 2 is placed at a predetermined position on the electronic control unit 1 with the rubber ring 65 mounted on the outer peripheral edge of the flange base portion 59a and the rubber ring 52 mounted on the annular wall 51. Each male terminal 45 of the motor 7 is connected to the motor-side connection portion 43.
c, and each male terminal 66 of the solenoid male connector 60 is connected to each female-female relay terminal 61 of the solenoid female connector 59, and further, is fastened by flanged bolts 31 and bolts 70. The electronic control unit 1 and the hydraulic unit 2 are integrated with each other.

As described above, the connector connecting portion 11b of the electronic control unit 1 to which the external connector 14 is connected is
The electronic control unit 1 is disposed so as to extend from the gap between the upper case 11 upper surface side and the motor 7 of the hydraulic unit 2. Since the relatively large motor relay 17 and the fail-safe relay 18 are arranged at the position of the relay accommodating portion 11a bulged in the gap between the upper case 11 and the upper case 11 of the electronic control unit 1, Top and motor 7
The dead space formed by (1) and (2) can be effectively used, and the upper case 11 can be configured to be flatter, so that the entire hydraulic control unit-integrated electronic control unit can be made more compact.

The hydraulic housing 3 of the hydraulic unit 2
Since the air-permeable and liquid-tight ventilation holes 21 are provided in the wall 11c of the connector connection portion 11b facing the air pressure difference between the inside and outside of the case 5 of the electronic control unit 1 due to a temperature change. Can be effectively eliminated, and intrusion of water into the case 5 can be effectively prevented. Moreover, the wall 11c
Is arranged at a position facing the hydraulic housing 3 with a slight gap therebetween.
In addition, water is not directly applied to the air hole, and contact with other members can be effectively avoided, and damage to the vent hole 21 can be effectively prevented.

Further, the case 5 of the electronic control unit 1
The lower case 12 is composed of the upper case 11 and the lower case 12, and the lower case 12 is caulked to the upper case 11 via a sealant 33 disposed along the periphery of the lower opening 28 of the upper case 11. With the structure, the workability of assembly can be improved.

Further, since the upper case 11 is formed by die-casting with an aluminum material and the lower case 12 is formed of a sheet metal material, each of the cases 11 and 12 can be easily manufactured.
Manufacturing cost can be reduced.

Further, when the hydraulic unit 2 is integrally connected to the electronic control unit 1, the male terminal 45 provided in the annular wall portion 51 provided below the motor 7 and provided in a downwardly projecting shape is provided. Is the relay terminal 46 on the electronic control unit 1 side.
And a rubber ring 52 attached to the annular wall portion 51 is compressed to the upper surface side of the upper case 11 of the electronic control unit 1, so that the electronic control unit 1 and the hydraulic unit 2 are integrated. By the connection, the connection of the terminals 45 and 46 between the motor 7 side and the electronic control unit 1 side and the seal at the connection portion can be easily obtained.

A non-brake fluid storage chamber 35b of the buffer chamber 35 provided in the hydraulic housing 3 is provided facing the lower surface of the hydraulic housing 3, and the non-brake fluid storage chamber 35b is provided on the upper case 11 of the electronic control unit 1. Room 35b
Since the communication groove 40 for communicating the air with the outside air is formed, the non-brake fluid storage chamber 35b can be released to the atmosphere through the communication groove 40, and the operation of the piston 36 becomes smooth.

Further, at the center of the upper case 11, there is provided a bolt insertion tube portion 26 extending to the lower case 12, and the hydraulic unit 2 and the electronic control unit 1 are connected to the bolts 31 with flanges.
When the bolts are integrally connected with each other, the space between the bolt insertion tube portion 26 and the lower case 12 is sealed by a rubber ring 27. The rubber ring 27 ensures airtightness inside and outside the case 5, and the bolt insertion tube portion 26 Thereby, the center of the lower case 12 is supported, and the rigidity of the entire case 5 can be improved.

Further, a heat generating component 55 such as a regulator is mounted on a conductor 56 provided on the printed circuit board 16 in a contact state, and the conductor 56 is in contact with the upper case 11. The heat generated by the heat generating component 55 can be effectively radiated to the outside of the electronic control unit 1 through the conductor portion 56 and the upper case 11.

Further, the solenoid female connector 59 includes a U-shaped female-female relay terminal 61 bent into a U-shape having female connection portions 61a at both ends, and one female connection portion 61a of the female-female relay terminal 61 is provided. Is connected to a male terminal 58 protruding from the hydraulic housing 3 and a male terminal 66 of the electronic control unit 1 is connected to the other female connection portion 61a of the female-female relay terminal 61. When the male terminal 58 of the solenoid coil side projecting from the lower surface of the hydraulic housing 3 is connected to one female connection portion 61a of the female-female relay terminal 61 of the solenoid female connector 59, quality control of the hydraulic unit 2 is performed. If the transfer is performed, the male terminal 58 is directly connected to the outside.
And the female-to-female relay terminal 61 is not exposed in a protruding manner, can be protected by the resin housing of the solenoid female connector 59, damage due to contact or collision with other members can be effectively prevented, and quality control is easy. Becomes

Further, by using the U-shaped female-female relay terminal 61, the connection between the male terminal 58 on the solenoid coil side in the hydraulic housing 3 and the male terminal 66 on the electronic control unit 1 can be performed by setting a distance L ( (See FIG. 20)
Can be absorbed, and therefore, a high degree of freedom of the positioning operation between the electronic control unit 1 and the hydraulic unit 2 can be secured.

Further, since the female-female relay terminal 61 is bent in a U-shape, the height can be reduced.

In the U-shaped female-female relay terminal 61 of the solenoid female connector 59, the female connecting portion 61a connected to the solenoid coil side male terminal 58, which is a movable portion, has a faston shape and is not fixed to the resin housing. Since the female connection portion 61a connected to the male terminal 66 on the electronic control unit 1 has a tongue shape and is fixed to the resin housing, when the brake fluid pressure acts on the master cylinder, the male terminal 58 on the solenoid coil side is set. Although it moves up and down slightly, the male terminal 58 on the solenoid coil side is connected to a faston-shaped female connecting portion 61 a of the female-female relay terminal 61 which has a high contact pressure.
Since a is not fixed to the resin housing, the male terminal 58 and the female connecting portion 61a can move up and down integrally to prevent relative sliding, thereby effectively preventing fretting corrosion.

Further, positioning pins 63 are formed in the resin housing of the solenoid female connector 59, and positioning holes 64 are formed in the hydraulic housing 3 at positions corresponding to the positioning pins 63.
The structure is such that the positioning pin 63 of No. 9 is mechanically connected to the hydraulic housing 3 by being press-fitted into the positioning hole 64, and can be easily positioned and connected easily by press-fitting. Moreover, the structure is simple, and a small-sized connecting structure can be provided at low cost.

The male terminal 66 on the electronic control unit 1 side
Are U-shaped, and the solenoid female connector 59
The side not connected to the printed circuit board 16 and the soldering 6
6a, the stress relaxation of the soldered portion 66a between the male terminal 66 and the printed circuit board 16 can be achieved with respect to the insertion and removal of the female connection portion 61a of the female-female relay terminal 61 and the thermal expansion and contraction.

Further, the male terminal 6 on the electronic control unit 1 side
The upper case 11 in which the resin housing of the solenoid male connector 60 for fixing the housing 6 is made of aluminum.
And the locking piece 60b and the overhanging piece 60c form a locking structure and a retaining structure, so that when the solenoid female connector 59 is inserted into or removed from the solenoid male connector 60, the resin of the solenoid male connector 60 is removed. The housing is effectively fixed to the upper case 11, so that the stress on the soldered portion 66a between the printed circuit board 16 and the male terminal 66 can be relaxed.

Further, projections are formed on the resin housing of the solenoid male connector, and holes are formed at positions corresponding to the projections on the printed circuit board and the electronic control unit case, and the projections are inserted into the respective holes during assembly. With this structure, the solenoid male connector can be directly positioned with respect to the electronic control unit case, and can also be effectively used as a positioning when the printed mounting board and the solenoid male connector are temporarily fixed.

Further, the solenoid female connector 59 is provided with a flange base 59a for holding the rubber ring 65 along the lower surface of the hydraulic housing 3, and the electronic control unit 1
When the and the hydraulic unit 2 are integrally connected, a seal step 68 is formed at a corresponding position of the upper case 11 in which the flange base 59a is fitted and the rubber ring 65 is in close contact. With this structure, the positioning and mounting work of the rubber ring 65 can be easily performed, and the workability in assembling can be improved.

In the above-described embodiment, the connector connecting portion 11b has a structure extending from the upper surface of the upper case 11 to the side of the motor 7; As shown in the figure, the structure may be extended obliquely upward, and the extending direction may be appropriately determined in relation to the external connector 14.

Further, a structure is shown in which the locking piece portion 60b of the solenoid male connector 60 is locked in the upper case 11 in a locking manner, and the solenoid male connector 60 is locked and held in the upper case 11. A structure may be employed in which the solenoid male connector 60 is provided with a locking piece that is locked to the mounting board 16 in a retaining shape, and the solenoid male connector 60 is locked and held by the printed mounting board 16. The effect of is obtained.

[0077]

As described above, according to the hydraulic control unit-integrated electronic control unit in the antilock brake system of the present invention, the male terminal on the solenoid coil side and the male terminal connected to the printed circuit board on the electronic control unit side. And a solenoid female connector composed of a resin housing and a U-shaped female-female relay terminal bent into a U-shape having female connection portions at both ends for connecting the movable portion.
U-shaped female terminal connected to the male terminal on the solenoid coil side
The female connection of the female connection terminal is faston-shaped and made of resin.
The structure is not fixed to the housing, and the electronic control unit
U-shaped female-female relay terminal connected to the male terminal on the knit side
The female connection part of the
And a hydraulic unit through the solenoid female connector.
When the unit and the electronic control unit are mechanically connected,
Sometimes the male terminal on the solenoid coil side and the electronic control unit
In a state where the male terminal on the solenoid coil side, which is electrically connected, and is protruded from the lower surface of the hydraulic housing of the hydraulic unit, is connected to one female connection portion of the female-female relay terminal of the solenoid female connector, If the quality control and transport of the hydraulic unit are performed, the male terminals and relay terminals are not directly exposed to the outside and can be protected by the resin housing, and damage due to contact or collision with other members etc. It can be effectively prevented and quality control becomes easy. Also, U
By using the female-to-female relay terminals, the position tolerance can be absorbed in the connection between the male terminal on the solenoid coil side and the male terminal on the electronic control unit side in the hydraulic housing. A large degree of freedom in alignment work with the unit can be secured. Further, since the female-female relay terminal is bent in a U-shape, there is an advantage that the height can be reduced in size.

Also, the solenoid coil side of the movable portion
Female connection of U-shaped female-female relay terminal to connect with female terminal
The part is faston shaped and not fixed to the resin housing.
U-shaped to connect with the male terminal on the electronic control unit side
The female connection of the female-to-female relay terminal has a tongue-shaped
The male terminal on the solenoid coil side moves up and down slightly when the brake fluid pressure acts on the master cylinder because the structure is fixed to the housing, but the male terminal on the solenoid coil side moves up and down with one contact pressure of the female-female relay terminal. The male terminal and the female connection are moved up and down integrally to prevent relative sliding because the female connection is connected to the high faston-shaped female connection and this female connection is not fixed to the resin housing. This has the advantage that fretting corrosion can be effectively prevented.

Further, a projection is formed on the resin housing of the solenoid female connector, a hole is formed on the hydraulic housing at a position corresponding to the projection, and the projection of the solenoid female connector is press-fitted into the hole to form the hydraulic housing. If it is configured to be mechanically connected to the motor, it can be easily positioned and connected easily by press-fitting. In addition, the structure is simple, and there is an advantage that a small-sized connecting structure can be provided at low cost.

If the male terminal on the electronic control unit side has a U-shape and the side not connected to the solenoid female connector is configured to be soldered to a printed circuit board, the female connection of the female-female relay terminal can be inserted and removed. In addition, there is an advantage that stress relaxation of a soldered portion between the male terminal and the printed circuit board can be achieved against thermal expansion and contraction.

Further, if the resin housing of the solenoid male connector for fixing the male terminal on the electronic control unit side is made of a metal electronic control unit case and a locking structure or a retaining structure, the solenoid female connector can be inserted into the solenoid male connector at the time of insertion. At the time of removal, the resin housing is effectively fixed to the electronic control unit case, and there is an advantage that the stress on the connection between the printed circuit board and the male terminal can be relaxed.

A projection is formed on the resin housing of the solenoid male connector, and a hole is formed at a position corresponding to the projection on the printed circuit board and the electronic control unit case, and the projection is inserted into each hole during assembly. With this structure, the solenoid male connector can be positioned directly with respect to the electronic control unit case, and can also be effectively used as a positioning when the printed mounting board and the solenoid male connector are temporarily fixed. is there.

Further, the resin housing of the solenoid female connector is provided with a holding flange portion for holding a rubber ring along the lower surface of the hydraulic housing, and when the electronic control unit and the hydraulic unit are integrally connected, the holding flange is provided. If the seal step is formed at the corresponding position of the electronic control unit case where the part is fitted and the rubber ring is in close contact with the electronic control unit case, the rubber ring can be easily attached, and the assembling work can be performed. There is an advantage that the performance can be improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a front view of the same assembled state.

FIG. 3 is a right side view of FIG. 2;

FIG. 4 is a plan view of FIG. 2;

FIG. 5 is an explanatory sectional view of a main part of the same.

FIG. 6 is an enlarged sectional view of a ventilation hole.

FIG. 7 is a sectional view of a main part at a position of a bolt insertion cylinder.

FIG. 8 is a plan view of the upper case.

FIG. 9 is an explanatory view of a relevant part showing the work of caulking the upper case and the lower case.

FIG. 10 is an explanatory view of a main part showing a work of caulking the upper case and the lower case.

FIG. 11 is an explanatory view of a main part showing a work of caulking the upper case and the lower case.

FIG. 12 is a sectional view of a main part at a buffer chamber position.

FIG. 13 is an exploded perspective view of the electric junction box.

FIG. 14 is an explanatory diagram showing an electrical connection portion between a motor side and an electronic control unit side.

15 is a sectional view taken along the line XV-XV in FIG.

FIG. 16 is a sectional view taken along the line XVI-XVI, showing a connection state between the male terminal and the female connection portion in FIG. 15;

FIG. 17 is a cross-sectional view of a main part showing a mounting state of a heat-generating component.

FIG. 18 is a plan view of a solenoid connector.

19 is a sectional view taken along the line XIX-XIX in FIG. 18;

FIG. 20 is an explanatory diagram of a connection operation between a solenoid connector and a solenoid connector connection portion.

FIG. 21 is a plan view of a solenoid connector connection portion.

FIG. 22 is a view taken along line XXII-XXII in FIG. 21;

FIG. 23 is a fragmentary cross-sectional view showing a positioning structure of an upper case, a printed circuit board, and a solenoid male connector.

[Explanation of symbols]

 1 Electronic Control Unit 2 Hydraulic Unit 3 Hydraulic Housing 4 Solenoid Valve 5 Case 6 Electronic Control Unit 7 Motor 11 Upper Case 12 Lower Case 16 Printed Circuit Board 58 Male Terminal 59 Solenoid Connector 59a Flange Base 59b Solenoid Connection 60 Solenoid Connector 61 Relay terminal 61a Female connection part 61b Connection part 65 Rubber ring 66 Male terminal 67 Mounting hole

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hitoshi Hashiba 1-3-1 Shimaya, Konohana-ku, Osaka City Osaka Works, Sumitomo Electric Industries, Ltd. (56) References JP-A-7-45338 (JP, A) Kaihei 5-328570 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) H01R 13/40-13/533 B60T 8/34

Claims (6)

(57) [Claims] 1. A rotation detection device for detecting a rotation state of each wheel of an automobile, and a brake fluid pressure for a wheel cylinder of each wheel by controlling opening and closing of a solenoid valve through a solenoid coil in a hydraulic housing by an electronic control signal. And a hydraulic unit including a motor for driving a pump for recirculating the brake fluid to the master cylinder, and an electronic unit for forming the control signal for controlling the brake fluid pressure based on the rotation detecting device. A control unit, a solenoid built in the electronic control unit, a fail-safe relay for supplying / cutting power to a motor relay, and a motor relay for supplying / cutting power to a motor, and the electronic control unit By mechanically connecting the hydraulic unit on top,
In a hydraulic unit integrated type electronic control unit in an antilock brake system in which a male terminal on a solenoid coil side projecting below the lower surface of the hydraulic housing is connected to a connection terminal on an electronic control unit side, the solenoid coil side A male terminal connected to a male terminal connected to the printed circuit board on the electronic control unit side, and a U-shaped female-female relay terminal and a resin housing which are bent into a U-shape having female connection portions at both ends. It has a solenoid female connector that is
U-shaped female-female connected to male terminal on the solenoid coil side
The female connection part of the relay terminal is a Faston-shaped resin housing
And the electronic control unit side
Female connection of U-shaped female-female relay terminal connected to male terminal
The connecting part has a tongue shape and is fixed to the resin housing.
Hydraulic unit via the solenoid female connector
And the electronic control unit are mechanically connected and
The male terminal on the solenoid coil side and the electronic control unit are electrically connected.
An electronic control unit integrated with a hydraulic unit in the anti-lock brake system, wherein the electronic control unit is connected to the hydraulic control unit. 2. A resin housing for the solenoid female connector.
A protrusion is formed on the jing, and the protrusion is formed on the hydraulic housing.
A hole is formed at a corresponding position, and the solenoid female connector is formed.
When the projection of the denter is pressed into the hole, the hydraulic pressure
The electronic control unit integrated with a hydraulic unit in the anti-lock brake system according to claim 1, wherein the electronic control unit is mechanically connected to the housing . 3. The electronic control unit-side male terminal is U-shaped.
Shape and connected to the solenoid female connector.
The electronic control unit integrated with a hydraulic unit in the antilock brake system according to claim 1, wherein the non-existing side is soldered to a printed circuit board . 4. The electronic control unit side male terminal is fixed.
The resin housing of the solenoid male connector is made of metal
Electronic control unit case, lock structure, retaining structure
The electronic control unit integrated with a hydraulic unit in the antilock brake system according to claim 1, wherein: 5. A resin housing for the solenoid male connector.
Form protrusions on the jing and electronically control the printed circuit board.
A hole is formed at the position corresponding to the protrusion on the control unit case
The projections are inserted into each hole when assembling.
The electronic control unit integrated with a hydraulic unit in the anti-lock brake system according to claim 1, wherein the electronic control unit is positioned. 6. A resin housing for the solenoid female connector.
Hold the rubber ring on the jig along the underside of the hydraulic housing.
It has a holding flange part to hold, and an electronic control unit and
When the hydraulic unit is integrally connected,
The flange part is fitted and the rubber ring is in close contact
The seal step is at the corresponding position of the electronic control unit case.
The electronic control unit integrated with a hydraulic unit in the antilock brake system according to claim 1, wherein the electronic control unit is formed.