JP2009040125A - Electronic control unit and vehicle behavior control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic control unit capable of reducing cost and work time caused by a specification change in sensors, while improving processing efficiency in an inspection-adjustment process of the sensors, without enlarging the area of a control board. <P>SOLUTION: This electronic control unit 10 has a sensor board 30 attached with the sensors 33 and 34, the control board 20 controlling operation of an electric part based on a physical quantity detected by the sensors 33 and 34, and a housing H storing the sensor board 30 and the control board 20, and is characterized in that the housing H has a case part 40 (a first member) storing the control board 20 and a cover part 50 (a second member), and the sensor board 30 and the control board 20 are arranged in a hierarchical state by interposing an adapter 60 having the sensor board 30 between the case part 40 and the cover part 50. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electronic control unit that controls the operation of an electrical component, and a vehicle behavior control device using the electronic control unit.

In a vehicle behavior control device for stabilizing the behavior of a vehicle such as an automobile, electrical components such as a solenoid valve, a pressure sensor, and a motor, a reciprocating pump driven by the power of the motor, a reservoir component serving as a reservoir, and an electromagnetic An electronic control unit that controls the operation of the valve and the motor, a sensor that detects the behavior of the vehicle body, and a base body in which a fluid path for brake fluid is formed and various parts described above are assembled.
The electronic control unit includes a control board that controls the operation of the electromagnetic valve and the motor based on the behavior of the vehicle body detected by the sensor, and a housing that houses the control board.
In the vehicle behavior control device described above, the electronic control unit controls the operation of the electromagnetic valve and the motor based on the behavior of the vehicle body detected by the sensor, and varies the brake fluid pressure in the brake fluid path. The vehicle's behavior is stabilized by controlling the braking force of the wheel brakes.

  In the vehicle behavior control device configured as described above, when the sensor is disposed on the vehicle compartment side and the electronic control unit is disposed in the engine room, parts such as a harness for connecting the sensor and the electronic control unit are necessary. In addition, it is necessary to secure a space in the vehicle for accommodating the sensor and the electronic control unit separately.

Therefore, there is a sensor in which a sensor is mounted on the surface of a control board and the sensor is incorporated in an electronic control unit (for example, see Patent Document 1).
In this electronic control unit, it is not necessary to connect the sensor and the control board by a member such as a harness, so that the number of parts can be reduced. Moreover, since it is not necessary to separately house the sensor and the electronic control unit in the vehicle, the vehicle can be reduced in size and weight.

Japanese Patent No. 3201242 (paragraph 0015, FIG. 2)

However, when a sensor such as an angular velocity sensor or an acceleration sensor for detecting the behavior of the vehicle body is mounted on the surface of the control board, it is necessary to secure a space for mounting the sensor on the surface of the control board. There is a problem that the area of the device becomes large.
In addition, when the sensor is inspected or adjusted, the entire control board becomes a processing target, and thus there is a problem that the processing efficiency in the sensor inspection / adjustment process is lowered.
In addition, when changing the sensor specification, the configuration of the control board is significantly changed, and thus there is a problem that the cost and working time accompanying the change of the sensor specification increase.

  Therefore, in the present invention, it is possible to improve the processing efficiency in the inspection / adjustment process of the sensor without increasing the area of the control board, and to reduce the cost and work time associated with the change of the sensor specification. It is an object to provide a control unit and a vehicle behavior control apparatus using the electronic control unit.

  In order to solve the above-mentioned problems, the present invention is an electronic control unit that controls the operation of an electrical component based on a sensor board on which a sensor for detecting a predetermined physical quantity is attached and the physical quantity detected by the sensor. A control board; and a housing for housing the sensor board and the control board. The housing closes a first member in which a housing chamber for housing the control board is formed, and an opening of the first member. The sensor board and the control board are arranged in a hierarchical state by having an adapter having the sensor board between the first member and the second member. It is characterized by that.

In this configuration, the sensor board and the control board are housed in the housing in a hierarchical state, and it is not necessary to mount the sensor on the surface of the control board, so that it is not necessary to increase the area of the control board.
In addition, the sensor board and the control board are separate boards, and when performing inspection or adjustment on the sensor, only the sensor board is subject to processing, thus improving the processing efficiency in the sensor inspection and adjustment process. be able to.
In addition, when changing the sensor specifications, it is only necessary to change the configuration of the sensor board, and it is not necessary to change the configuration of the control board. Therefore, it is possible to reduce the cost and work time associated with the change of the sensor specifications. .
In addition, since the adapter is interposed between the first member and the second member, the sensor board and the control board can be layered in the housing using the existing housing. The versatility for the housing can be enhanced.
Moreover, the sensor board attached to the adapter can be positioned with respect to the housing by interposing the adapter between the first member and the second member. Thereby, the detection axis of the sensor and the reference axis set in the housing can be easily matched, so that the assembly efficiency of the sensor board and the control board can be improved.

  In the electronic control unit described above, a hierarchical area in which the sensor board is layered is set on the surface of the control board, and the height is the largest among the plurality of electronic components attached on the surface of the control board. The electronic component can be configured to be attached to an area other than the hierarchical area.

In this configuration, the electronic component having the largest height among the plurality of electronic components and the electronic component having a height close to the electronic component are attached to other than the hierarchical region, and the relatively high height of the plurality of electronic components is relatively high. By attaching a small electronic component to the hierarchical region, the space between the sensor board and the control board can be narrowed, so that the electronic control unit can be further downsized.
In addition, since the surface of the sensor board facing the control board faces the hierarchical area where the electronic components having a relatively small height are attached, this is the case when the sensors and electronic parts are attached to both sides of the sensor board. However, since the space | interval of a sensor board | substrate and a control board can be restrained, the space in a housing can be utilized effectively. Further, since the number of components attached to each surface of the sensor substrate is reduced, the area of the sensor substrate can be reduced, and the sensor substrate can be reduced in size.

In the electronic control unit described above, at least one of an angular velocity sensor and an acceleration sensor can be used as the sensor.
With this configuration, it is possible to reduce the size of an electronic control unit incorporating an angular velocity sensor or an acceleration sensor used for detecting the behavior of the vehicle body, and to improve the processing efficiency of the sensor inspection / adjustment process. In addition, the cost for changing the specifications of the sensor can be reduced.

In the electronic control unit described above, the second member can be constituted by a flat lid.
In this configuration, since the second member is a flat lid, the second member can be easily attached to the adapter attached to the opening of the first member, so the assembly efficiency of the housing is improved. Can be made.

  A vehicle behavior control device using an electronic control unit as described above, comprising a base body on which a brake fluid passage of a vehicle is formed and an electrical component provided on the base body, the electronic control unit being detected by a sensor. The brake fluid pressure in the brake fluid passage can be controlled by controlling the operation of the electric parts based on the behavior of the vehicle body.

In this configuration, since the sensor is incorporated in the electronic control unit, when assembled to the vehicle, it can be easily assembled without being caught by the harness. Moreover, since it is not necessary to increase the area of the control board, the vehicle behavior control device does not become larger than necessary.
In addition, it is possible to improve the processing efficiency in the inspection / adjustment process of the sensor, reduce the cost and work time associated with the change of the sensor specification, and improve the assembly efficiency of the sensor board and the control board. Therefore, the manufacturing cost of the vehicle behavior control device can be reduced.

According to the electronic control unit of the present invention, since it is not necessary to attach a sensor on the surface of the control board, it is not necessary to increase the area of the control board.
Further, in the sensor inspection / adjustment process, only the sensor substrate is processed, so that the processing efficiency can be improved.
In addition, when changing the specification of the sensor, it is not necessary to change the configuration of the control board, so that it is possible to reduce the cost and work time associated with the change of the specification of the sensor.
In addition, since the adapter is interposed between the first member and the second member, the sensor board and the control board can be layered in the housing using the existing housing. The versatility for the housing can be enhanced.
Moreover, since the sensor board attached to the adapter can be positioned with respect to the housing by interposing the adapter between the first member and the second member, the assembly efficiency of the sensor board and the control board is increased. Can be improved.

In the vehicle behavior control apparatus using the electronic control unit described above, since the sensor is incorporated in the electronic control unit, when assembled to the vehicle, it can be easily assembled without being caught by the harness. Moreover, since it is not necessary to increase the area of the control board, the vehicle behavior control device does not become larger than necessary.
In addition, to reduce the manufacturing cost of the vehicle behavior control device by improving the processing efficiency in the sensor inspection / adjustment process, reducing the cost and work time associated with changing the sensor specifications, and improving the assembly efficiency of the sensor board and control board. Can do.

Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In the present embodiment, an electronic control unit applied to a vehicle behavior control apparatus that stabilizes the behavior of an automobile by controlling the braking force of a wheel brake will be described as an example.

[Configuration of Vehicle Behavior Control Device]
First, the configuration of the vehicle behavior control device U will be described with reference to FIG.
The vehicle behavior control device U detects the behavior of the base body 100 on which electric parts such as the electromagnetic valve V, the pressure sensor S, and the motor 200 and the reciprocating pump P are assembled, and the behavior of the vehicle body. And an electronic control unit 10 for controlling the operation. A brake fluid passage is formed in the base body 100, and the electronic control unit 10 operates the electromagnetic valve V and the motor 200 based on the behavior of the vehicle body so as to vary the brake fluid pressure in the brake fluid passage. It is configured.

(Base structure)
As shown in FIG. 1, the base body 100 is a metal part formed in a substantially rectangular parallelepiped shape, and a brake fluid path (oil path) is formed therein.
Among the surfaces of the base body 100, a plurality of bottomed mounting holes 151... For mounting electrical components such as the solenoid valve V and the pressure sensor S are formed on the front surface 101.
Further, on the upper surface 103 of the base body 100, four outlet ports 152, etc., to which pipes leading to wheel brakes (not shown) are connected are formed.
Further, on the lower surface of the base body 100, two reservoir holes 153 for assembling the reservoir component R constituting the reservoir are formed.
Further, the side surface 105 of the base body 100 is formed with a pump hole 155 in which the reciprocating pump P is mounted.
The holes provided in the base body 100 communicate with each other directly or through a brake fluid path (not shown) formed in the base body 100.

(Motor configuration)
The motor 200 serves as a power source for the reciprocating pump P, and is fixed integrally to the back surface 102 of the base body 100 as shown in FIG. An endless seal member 214 is interposed between the motor 200 and the back surface 102 of the base body 100 to seal the space between the motor 200 and the back surface 102 of the base body 100 in a liquid-tight manner.
The output shaft 210 of the motor 200 is provided with an eccentric shaft portion 211, and a ball bearing 212 is fitted into the eccentric shaft portion 211. The eccentric shaft portion 211 and the ball bearing 212 are inserted into the motor mounting hole 154. A motor bus bar 220 for supplying electric power to a rotor (not shown) is connected above the output shaft 210. The motor bus bar 220 is inserted into the terminal hole 140 and is connected to the control board 20 via a terminal T provided in the terminal hole 140.

[Configuration of electronic control unit]
As shown in FIG. 1, the electronic control unit 10 includes a housing H that houses electrical components protruding from the base 100, the sensor substrate 30, the control substrate 20, and the like.

(Housing configuration)
As shown in FIG. 2, the housing H includes a case portion 40 (a “first member” in the claims) in which a second storage chamber 42 for storing the control board 20 is formed, and an opening of the case portion 40. A lid portion 50 (“second member” in the claims), and an adapter 60 is interposed between the case portion 40 and the lid portion 50.

(Structure of the case part)
As shown in FIG. 2, the case portion 40 is integrated with the front surface 101 of the base body 100 in a state of covering electrical components such as the electromagnetic valve V and the pressure sensor S protruding from the front surface 101 of the base body 100. A box made of synthetic resin to be fixed (see FIG. 1).
The case portion 40 has a front side surface (the right side surface in FIG. 2) and a back side surface (the left side surface in FIG. 2) open, and an electromagnetic valve V, an electromagnetic coil V1, A first storage chamber 41 for storing electrical components such as the pressure sensor S is formed, and a second storage chamber 42 for storing the sensor substrate 30 and the control substrate 20 is formed on the front side of the internal space.

  The case portion 40 includes a first peripheral wall portion 41a that forms the first storage chamber 41, a connector connection portion 43 (see FIG. 3A) disposed on the side of the first peripheral wall portion 41a, A second peripheral wall portion 42 a that forms the second storage chamber 42, and a partition portion 44 (see FIG. 3A) that partitions the first storage chamber 41 and the second storage chamber 42 are provided.

The first peripheral wall portion 41 a is a portion that surrounds the electrical component, and includes a flange 41 b that comes into contact with the outer peripheral edge of the front surface 101 of the base body 100. A mounting hole 41c is formed at an appropriate position of the flange 41b (see FIG. 3A).
Note that an endless seal member 41d is mounted on the end surface of the flange 41b on the base 100 side along the inner periphery of the flange 41b. The sealing member 41 d is a member that is in close contact with the front surface 101 of the base body 100 and seals between the base body 100 and the housing H.

  The 2nd surrounding wall part 42a is a site | part surrounding the sensor board | substrate 30 and the control board 20, and is arrange | positioned at the front side of the 1st surrounding wall part 41a and the connector connection part 43 (refer Fig.3 (a)). As shown in FIG.3 (b), the outer peripheral shape of the 2nd surrounding wall part 42a is a rectangle.

  A connector connecting portion 43 shown in FIG. 3A is a portion to which a connector provided at an end of an external wiring cable (not shown) is connected, and passes through the bottom wall of the connector connecting portion 43 from the second storage chamber 42. A plurality of connection terminals 43a... Led out to the outer surface (surface exposed to the outside) and side walls 43b surrounding the connection terminals 43a.

As shown in FIG. 3B, the partition 44 is formed in a rectangular shape, and substrate holding portions 44a... Project from the four corners of the surface on the second storage chamber 42 side.
The substrate holding portion 44a is a portion that supports the control substrate 20 (see FIG. 4A), and the protruding end surface of each substrate holding portion 44a contacts the surface of the control substrate 20 on the partitioning portion 44 side. . Further, a mounting hole 44b is formed on the protruding end surface of the substrate holding portion 44a, and a thread groove is formed on the inner peripheral surface of the mounting hole 44b.

(Configuration of lid)
As shown in FIG. 1, the lid portion 50 is attached to the opening portion on the front side of the case portion 40 via the adapter 60, so that the opening portion on the front side of the case portion 40 is hermetically sealed. It is a lid.

(Adapter configuration)
As shown in FIG. 6, the adapter 60 is interposed between the case portion 40 and the lid portion 50 (see FIG. 1), and is a frame body having a synthetic resin frame portion 61 as a main part. is there.
The frame portion 61 has a rectangular shape corresponding to the opening edge on the front side of the case portion 40 (see FIG. 3B) and the outer peripheral edge of the lid portion 50 (see FIG. 1). The frame portion 61 is fixed to the front opening edge (end surface of the second peripheral wall portion 42a) of the case portion 40 by means such as welding or adhesion (see FIG. 5A). Further, the lid 50 is fixed to the front end surface of the frame 61 by means such as welding or adhesion (see FIG. 1). As described above, the adapter 60 is sandwiched between the peripheral portions of the second peripheral wall portion 42 a of the case portion 40 and the lid portion 50.

In the region within the frame portion 61, substrate attachment portions 62 for supporting the sensor substrate 30 are formed at four locations in the left region of FIG.
Each substrate mounting portion 62 is a flat plate-like portion projecting from the inner peripheral surface of the upper and lower sides of the frame portion 61 in FIG. 5B, and is disposed on the upper side in FIG. The two board mounting parts 62, 62 are arranged at a predetermined interval in the left-right direction, and the two board mounting parts 62, 62 arranged on the lower side of FIG. Is formed.
Each of the substrate mounting portions 62 is a portion to which the four corners of the sensor substrate 30 are mounted, and mounting holes 63 (see FIG. 6) communicating with the mounting holes 32 formed at the four corners of the sensor substrate 30, respectively. Each is formed.

(Configuration of control board)
As shown in FIGS. 4A and 4B, the control board 20 has electronic parts 26a, 26b, and 26c such as semiconductor chips attached to a rectangular board body 21 on which an electronic circuit (conductive member) is printed. The control board 20 is fixed in the second storage chamber 42 by attaching the substrate body 21 to the surface of the partition 44 of the housing H on the second storage chamber 42 side (see FIG. 2).
The control board 20 controls the opening and closing of the electromagnetic valve V and the operation of the motor 200 based on information obtained from various sensors such as the sensor board 30 and the pressure sensor S shown in FIG. 2 and a program stored in advance. Configured to control.

  Further, in the control board 20, as shown in FIG. 4B, insertion holes 22 are formed in the vicinity of the four corners of the board body 21, respectively. When the control substrate 20 is attached to the surface of the partition portion 44 (see FIG. 3B) on the second storage chamber 42 side, the insertion hole 22 communicates with the attachment hole 44b of the substrate holding portion 44a. And the control board 20 is screwed into the attachment hole 44b of the board | substrate holding | maintenance part 44a by screwing the front-end | tip part of the fixing bolt 23 penetrated by the insertion hole 22 from the front side of the control board 20, and the control board 20 accommodates the 2nd accommodation of the partition part 44. It is attached in parallel to the surface on the chamber 42 side.

In addition, on the front side surface of the control board 20, a hierarchical area 25 to which the sensor board 30 is attached in a hierarchical state is set.
In the present embodiment, among the various electronic components attached to the front surface of the control board 20, the electronic component 26 a having the largest height and the electronic component 26 b close to the height of the electronic component 26 a are other than the hierarchical region 25. In the hierarchical area 25, electronic components 26c having a relatively small height are arranged.
In addition, the electronic circuit of the control board 20 and the electrical components attached to the base body 100 (see FIG. 2) are electrically connected via connection terminals (not shown).

(Configuration of sensor board)
As shown in FIGS. 5A and 5B, the sensor substrate 30 has electronic components such as an angular velocity sensor 33 and an acceleration sensor 34 attached to a rectangular substrate body 31 on which an electronic circuit (conductive member) is printed. The electronic component is attached to the back surface of the substrate body 31.
The board body 31 of the sensor board 30 is attached to the opening edge on the front side of the case portion 40 in a state of being attached to the adapter 60, whereby the hierarchical region 25 set on the front side surface of the control board 20 (FIG. 4 ( b) (see FIG. 5 (a)).
The sensor substrate 30 is configured to detect the behavior (predetermined physical quantity) of the vehicle body by the angular velocity sensor 33 and the acceleration sensor 34.

  The four corners of the sensor substrate 30 are formed on the respective substrate attachment portions 62... Of the adapter 60 when the four corners of the sensor substrate 30 are overlapped with the front side surfaces of the respective substrate attachment portions 62. A mounting hole 32 communicating with the mounting hole 63 (see FIG. 6) is formed. Then, the fixing bolt 35 is inserted into the mounting hole 32 of the sensor board 30 and the mounting hole 63 of the board mounting part 62 from the front side, and the nut 36 (see FIG. 2) is attached to the tip of the fixing bolt 35 on the back side of the board mounting part 62. By screwing, the sensor substrate 30 is attached to each substrate attachment portion 62... Of the adapter 60.

Here, the adapter 60 is positioned with respect to the housing H by being interposed between the case portion 40 and the lid portion 50. When the adapter 60 is positioned between the case portion 40 and the lid portion 50, the sensor substrate 30 attached to the adapter 60 has the detection axes of the angular velocity sensor 33 and the acceleration sensor 34, the front and rear, left and right directions of the vehicle. Is configured so as to coincide with the reference axis.
Further, since the sensor board 30 and the control board 20 arranged in a hierarchical state using the adapter 60 are electrically connected by connection terminals (not shown), the angular velocity sensor 33 attached to the sensor board 30 is used. The vehicle behavior information detected by the acceleration sensor 34 can be output to the control board 20.

[Effects of electronic control unit and vehicle behavior control device]
In the electronic control unit 10 of the present embodiment, as shown in FIG. 5A, the sensor substrate 30 and the control substrate 20 are housed in the housing H in a hierarchical state, and the angular velocity sensor is placed on the surface of the control substrate 20. 33 and the acceleration sensor 34 do not need to be attached, so there is no need to increase the area of the control board 20.

  In addition, the sensor board 30 and the control board 20 are separate boards. When the inspection and adjustment are performed on the angular velocity sensor 33 and the acceleration sensor 34, only the sensor board 30 is a processing target. The processing efficiency of the process can be improved.

  Further, when the specifications of the angular velocity sensor 33 and the acceleration sensor 34 are changed, the configuration of the sensor substrate 30 need only be changed, and the configuration of the control substrate 20 does not need to be changed. Costs and work time associated with specification changes can be reduced.

  In addition, since the adapter 60 is interposed between the case portion 40 and the lid portion 50, the sensor substrate 30 and the control substrate 20 can be layered in the housing H using the existing housing H. The versatility with respect to the existing housing H can be improved.

  In addition, the sensor substrate 30 attached to the adapter 60 can be positioned with respect to the housing H by providing the adapter 60 between the case portion 40 and the lid portion 50. As a result, the detection axes of the angular velocity sensor 33 and the acceleration sensor 34 and the reference axis set in the housing H can be easily matched, so that the assembly efficiency of the sensor board 30 and the control board 20 can be improved. .

  Also, as shown in FIG. 4A, among the plurality of electronic components attached to the front side surface of the control board 20, the electronic component 26a having the largest height and the electronic component having a height close to the electronic component 26a. Since the component 26b is attached to other than the hierarchical region 25 and the electronic component 26c having a relatively small height is attached to the hierarchical region 25, the space between the sensor board 30 and the control board 20 can be narrowed. 10 can be further downsized.

  In the vehicle behavior control apparatus U of FIG. 1 using the electronic control unit 10 described above, the angular velocity sensor 33 and the acceleration sensor 34 (see FIG. 5B) are incorporated in the electronic control unit 10, so that the vehicle behavior control is performed. When assembling the apparatus U with respect to the vehicle, it can be easily assembled without being caught by the harness. Further, since it is not necessary to increase the area of the control board 20, the vehicle behavior control device U is not increased more than necessary.

[Other Embodiments]
The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the spirit of the present invention.
For example, in this embodiment, the adapter 60 shown in FIG. 4A is fixed to the opening edge of the case portion 40 by means such as welding or adhesion, but the adapter is used by using a fixing member such as a bolt or a pin. 60 may be attached to the case portion 40.

  Moreover, in this embodiment, as shown in FIG. 1, although the housing H is comprised by combining the box-shaped case part 40 and the flat cover part 50, the box-shaped case part 40 and this You may comprise a housing by combining with the box-shaped member which obstruct | occludes the opening part of the case part 40. FIG.

  When a semiconductor chip for processing signals from the angular velocity sensor 33 and the acceleration sensor 34 is attached in the hierarchical area 25 set on the front surface of the control board 20 shown in FIG. 4B, the angular velocity sensor 33, the wiring between the acceleration sensor 34 and the semiconductor chip is shortened, and when processing signals from the angular velocity sensor 33 and the acceleration sensor 34, it is difficult to be affected by electrical noise, so the behavior of the vehicle body can be detected accurately. can do.

Moreover, you may attach a sensor and an electronic component to both surfaces of the sensor board | substrate 30 shown in FIG. Since the surface on the back side of the sensor substrate 30 faces the hierarchical area 25 to which the electronic component 26c (see FIG. 4B) having a relatively small height is attached, the sensor substrate 30 has sensors and electronic components on both surfaces. Even when components are attached, the space between the sensor board 30 and the control board 20 can be suppressed, so that the space in the housing H can be used effectively. In addition, since the number of components attached to one surface of the sensor substrate 30 is reduced, the area of the sensor substrate 30 can be reduced, and the sensor substrate 30 can be reduced in size.
In addition, it is not necessary to provide both the angular velocity sensor 33 and the acceleration sensor 34 as a sensor for detecting the behavior of the vehicle body, and it may be configured to include either one.

It is the disassembled perspective view which showed the vehicle behavior control apparatus provided with the electronic control unit of this embodiment. It is the sectional side view which showed the vehicle behavior control apparatus provided with the electronic control unit of this embodiment. In the electronic control unit of this embodiment, it is the figure which showed the state before attaching a sensor board | substrate and a control board to a housing, (a) is the perspective view which looked at the housing from the front side, (b) looked at the housing from the front side. It is a top view. In the electronic control unit of this embodiment, it is the figure which showed the state which attached the control board to the housing, (a) is the perspective view which looked at the housing from the front side, (b) is the top view which looked at the housing from the front side. . In the electronic control unit of this embodiment, it is the figure which showed the state which attached the adapter to the housing, (a) is the perspective view which looked at the housing from the front side, (b) is the top view which looked at the housing from the front side. It is the perspective view which showed the adapter used for the electronic control unit of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electronic control unit 20 Control board 21 Board body 22 Insertion hole 25 Hierarchy area 26a-26c Electronic component 30 Sensor board 31 Board body 32 Mounting hole 33 Angular velocity sensor 34 Acceleration sensor 35 Fixing bolt 40 Case part 41 First storage chamber 42 Second Storage chamber 44 Partition 44a Substrate holder 44b Mounting hole 50 Lid 60 Adapter 61 Frame 62 Substrate mounting 63 Mounting hole 100 Base U Vehicle behavior control device

Claims (5)

A sensor board to which a sensor for detecting a predetermined physical quantity is attached;
A control board for controlling the operation of the electrical component based on the physical quantity detected by the sensor;
A housing for housing the sensor board and the control board,
The housing includes a first member in which a housing chamber for housing the control board is formed, and a second member that closes an opening of the first member,
An adapter having the sensor board is interposed between the first member and the second member, so that the sensor board and the control board are arranged in a hierarchical state. Electronic control unit. On the surface of the control board, a hierarchical area in which the sensor board is layered is set,
2. The electronic control according to claim 1, wherein the electronic component having the largest height among the plurality of electronic components attached on the surface of the control board is attached to an area other than the hierarchical area. unit.   The electronic control unit according to claim 1, wherein the sensor is at least one of an angular velocity sensor and an acceleration sensor.   The electronic control unit according to any one of claims 1 to 3, wherein the second member is a flat cover. A vehicle behavior control device using the electronic control unit according to any one of claims 1 to 4,
A base on which a brake fluid passage of the vehicle is formed;
The electrical component provided on the base body,
The electronic control unit is configured to control the brake fluid pressure in the brake fluid passage by controlling the operation of the electrical component based on the behavior of the vehicle body detected by the sensor. A vehicle behavior control device.

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