JPH0747940A - Structure of electronic control unit in unit integrated system - Google Patents

Abstract

PURPOSE:To provide the structure of an electronic control unit in a unit integrated system where the electronic control unit can be miniaturized while keeping the bonding strength of the specified value or over. CONSTITUTION:In a first divided case body 13b, fixed members 82 are provided in a projecting manner from four corners of a sheet-shaped plate 81 toward a second divided case body 13a respectively. Female threaded parts 83 are provided on each fixed member 82. In the second divided case body 13a, screw supporting members 92 are respectively provided in a projecting manner from the outer circumferential surface to the direction of the outer circumference corresponding to the fixed members 82, and screw supporting holes 93 where screws can be freely inserted are cut in the respective screw supporting members 92. After the first and second divided case bodies 13b, 13a are integrated, screws 28 are inserted into the screw supporting holes 93 of the screw supporting members 92, and the first and second divided case bodies 13b, 13a are joined to each other by screwing the tip parts of the screws into the female threaded part 83 formed in the fixed members 82.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic control unit in a unit integrated system in which an electronic control unit of a vehicle-mounted system such as ABS (antilock brake system), TCS (traction control system) and a hydraulic unit are integrated. It relates to the improvement of the structure of.

[0002]

2. Description of the Related Art For example, as one system for improving the safety of an automobile, there is an ABS that prevents wheels from locking during sudden braking or braking on a slippery road surface. In the conventional ABS, the hydraulic unit is generally arranged in the engine room, and the electronic control unit is arranged in the vehicle interior such as below the seat or inside the front panel.

However, when the hydraulic unit and the electronic control unit are separately arranged in the engine room and the vehicle compartment, a wire harness for electrically connecting these units is provided from the engine room to the vehicle. Since the wires must be installed in the room, a long wire harness is required, and the harness installation work is complicated.

Therefore, in recent years, as shown in FIG. 5, it has been proposed to integrally arrange the electronic control unit 2 and the hydraulic unit 1 in the engine room. It is possible to shorten the length and simplify the harness arrangement work in the assembly line.

By the way, the electronic control unit 2 is provided with a case 60 (70) as shown in the figure, and inside the case 60 (70), a junction block 10 to which a relay 12 is connected, Contains electronic components such as a printed circuit board 9 in which a control circuit is incorporated,
It is protected by the case 60 (70).

FIG. 6 is an exploded perspective view showing a conventional case. The case 60 is composed of divided case bodies 61 and 62 which can be integrated with each other. Divided case body 61
Through holes 63 are formed at the four corners of the
The other divided case body 62 is also provided with through holes 64 corresponding to the above through holes 63. Further, the split case body 62 is finished in a thin plate shape, a groove (not shown) is formed on one main surface thereof, and a seal member 65 is fitted in the groove. Then, with the electronic components housed inside the divided case body 61, these divided case bodies 61, 6
After the two are engaged with each other, the four screws 66 are inserted from the side of the divided case body 61 into the through holes 63 and 64, respectively, and further fastened with the nut 67 on the side of the divided case body 62. 61 and 62 are integrated with each other to form the electronic control unit 2.

FIG. 7 is an exploded perspective view showing another conventional case. This conventional example differs from the above-mentioned conventional example (FIG. 6) in that, as shown in FIG. 7, the split case body 72 is finished in a cup shape, and the split case body 72 is divided into outer peripheral edge portions 72a. The female screw portions 74 are provided corresponding to the through holes 73 formed at the four corners of the case body 71, respectively, and the seal member 75 is provided, and other configurations are almost the same. Therefore, here, the reference numerals corresponding to those of the above-mentioned conventional example (FIG. 6) are given and the description of the configuration is omitted.

[0008]

However, in the conventional example of FIG. 6, since the nut 67 projects from the side of the split case body 62, when the electronic control unit 2 and the hydraulic unit 1 are integrated, the case 60 thereof is provided. Part protruding from,
That is, the protruding portion (the tip portion of the screw 66 and the nut 67) becomes an obstacle in design. That is, it is necessary to determine the shape of the hydraulic unit 1 so as not to interfere with the protruding portion,
The degree of freedom in design becomes low. In addition, there is a problem that a space that is as wide as the protruding portion is required.

On the other hand, in the conventional example of FIG. 7, since the female screw portion 74 is provided on the outer peripheral edge portion 72a of the divided case body 72 and the screw 76 is fastened, there is no portion protruding from the case 70. The above problem is solved. However, in order to provide the female screw portion 74, it is necessary to make the outer peripheral edge portion 72a relatively high in the length direction X of the screw 76, and as a result, the size of the case 70 in the X direction becomes large. Further, in order to provide the seal member 75 on the outer peripheral edge portion 72a while ensuring a certain strength or more,
It is necessary to make the thickness t of the outer peripheral edge portion 72a relatively thick,
This is a major obstacle to making the case 70 compact.

Further, in common with the conventional examples shown in FIGS. 6 and 7, the cases 60 and 70 having the above-described configurations require relatively long screws 66 and 76. Therefore, a general-purpose screw that is generally commercially available cannot be used, and the dedicated screw 66,
76 is required, which is a factor of cost increase.

In view of the above problems, the present invention provides a structure of an electronic control unit in a unit-integrated system which can make the electronic control unit compact while ensuring a certain level of coupling strength. First
The purpose of.

A second object of the present invention is to provide a structure of an electronic control unit in a unit integrated system capable of assembling the electronic control unit with a relatively short screw.

[0013]

According to a first aspect of the present invention, an electronic control unit and a hydraulic unit are integrated, and a control circuit on the electronic control unit side and a solenoid of the hydraulic unit are electrically connected. A structure of an electronic control unit in an integrated system, comprising: first and second split case bodies finished to have a shape in which the electronic control units can be integrated with each other, in order to achieve the first object. In the first split case, a plurality of fixing members are provided from the surface facing the second split case body toward the second split case body when integrated with the second split case body. In the second split case body, a plurality of screw support members are provided so as to project from the outer peripheral surface of the second split case body in the outer peripheral direction in correspondence with each of the fixing members. With the split case bodies engaged with each other, a screw is inserted into a screw support hole provided in the screw support member, and a tip portion thereof is screwed into a female screw portion formed in the fixing member, The first and second divided case bodies are joined together.

According to a second aspect of the present invention, in order to achieve the second object, the fixing member and the screw support are provided in the longitudinal direction of the screw in a state where the first and second divided case bodies are joined. The screw support member is provided close to the first split case body so that the length including the members is shorter than the joined body of the first and second split case bodies.

[0015]

According to the present invention, the electronic control units are provided with the first and second divided case bodies finished in a shape that can be integrated with each other. A plurality of fixing members are projectingly provided on the first split case, while a plurality of screw supporting members are projectingly provided on the second split case body respectively corresponding to the fixing members. Then, with the first and second split case bodies engaged with each other, a screw is inserted into a screw support hole provided in the screw support member, and a tip portion thereof is formed in the fixing member. The first and second divided case bodies are joined by being screwed into the female screw portion.

Further, the screw supporting member is provided in the vicinity of the first divided case body, and when the first and second divided case bodies are joined, the length of the screw including the fixing member and the screw supporting member is increased. The length in the direction is shorter than that of the joined body of the first and second divided case bodies. Therefore, the first and second split case bodies can be integrated with each other by the relatively short screw.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 and FIG.
2 shows the hydraulic unit 1 and the electronic control unit 2 in FIG. 1, in which the hydraulic unit 1 includes a housing 3 in which an oil passage or the like is appropriately formed, a motor 4 as an actuator mounted and fixed to the housing 3, and an oil passage. A plurality of flow control valves (not shown) for opening and closing, and a plurality of solenoids 6 respectively operating the valves;
It is mainly composed of a base plate 7 mounted and fixed to the bottom of the housing 3.

The electronic control unit 2 includes a printed circuit board 9 on which electronic components and the like are mounted and a control circuit is formed, a junction block 10, and a plurality of relays 12 connected to a connector portion 11 of the junction block 10.
And these printed circuit boards 9 and junction block 1
0 and the relay 12 are mainly configured by a case 13 including a pair of split case bodies 13a and 13b that are housed.

Inside the electronic control unit 2, the respective parts are electrically connected to each other as follows. That is, in this electronic control unit 2, the printed circuit board 9, the junction block 10, the relay 12 and the like are electrically connected, and the connector connecting portion 14 provided on the printed circuit board 9 is opened from one opening of the divided case body 13a. It is housed in the divided case body 13a as an external protruding shape.
On the other hand, the other split case body 13b is formed with a relay housing portion 13c in which the relay 12 is housed and an insertion hole 13d into which the wire harness 6a extended from each solenoid 6 is inserted. Split case body 13b
An attachment boss 13f having a bolt insertion hole 13e is integrally provided at a predetermined position on the outer surface side of the.

The wire harness 6a of each solenoid 6 is inserted into the case 13 through the corresponding insertion hole 13d, and the insertion end of each wire harness 6a is connected to the connection connector 15, The connector 15 is connected to the connector portion 16 of the junction block 10. In this way, the wire harness 6a of each solenoid 6 is connected to the control circuit in the electronic control unit 2.

Further, in FIG. 1, 21 is a wire harness, which electrically connects the control circuit on the electronic control unit 2 side and the motor 4. That is, although not shown in the figure, a pair of bus bars is provided below the connector portion 11 of the junction block 10 in a protruding shape, and is connected to one end portion of each wire harness 21. The terminal 23 is caulked to each bus bar.

As described above, inside the electronic control unit 2, the connection connector 15 of each wire harness 6a, the relay 12, and the connection terminal 23 of the wire harness 21.
Are respectively connected to the junction block 10,
In that state, the printed circuit board 9 is connected.

Next, assembly of the electronic control unit 2 and integration of the hydraulic unit 1 and the electronic control unit 2 will be described.

FIG. 3 is an exploded perspective view of the case 13, and FIG. 4 is a perspective view showing a state after the case 13 is assembled. For convenience of illustration and description, these figures show a state viewed from an angle different from those of FIGS. 1 and 2 described above.

The divided case body 1 which constitutes the case 13
As shown in FIGS. 3 and 4, 3a and 13b are finished in a shape that can be integrated. In order to clearly distinguish these divided case bodies 13a and 13b, hereinafter, the divided case body 13b is referred to as a "first divided case body".
Meanwhile, the divided case body 13a is referred to as a "second divided case body".

In the first divided case body 13b, the fixing members 82 are respectively arranged from the four corners of the thin plate 81 to the second.
Is provided so as to project toward the divided case body 13a. Also,
A recess is formed in each fixing member 82, and a female screw portion 83 formed by screwing a screw is provided therein. Further, a groove (not shown) is provided along the outer periphery of the plate 81, and the seal member 84 is fitted in the groove.

On the other hand, in the second split case body 13a, the screw support members 92 are respectively provided from the outer peripheral surface of the second divided case body 13a in the outer peripheral direction (direction orthogonal to the X direction in the figure) from the outer peripheral surface thereof. Projected, and further each screw support member 92
Further, a screw support hole 93 is formed so that a screw described later can be inserted therethrough. In this embodiment, these screw support members 92 are provided close to the first split case body 13b, and as shown in FIG. 4, the first and second split case bodies 13b, 13a are not connected to each other. The fixed member 82 and the screw support member 92 are in contact with each other in a state of being engaged with each other. Moreover, in the joined state, the length L including the fixing member 82 and the screw supporting member 92 is the first and second divided case bodies 13 in the longitudinal direction of the screw, that is, the X direction.
It is shorter than the joined body (case 13) of b and 13a. Therefore, the first and second divided case bodies 13b,
After the 13a is integrated, the screw 28 is inserted into the screw supporting hole 93 of the screw supporting member 92, and the tip end of the screw 28 is screwed into the female screw portion 83 formed on the fixing member 82. The divided case bodies 13b and 13a are joined. In this way, the electronic control unit 2 is assembled.

As described above, in this embodiment, the case 1 is used.
On the side of the first divided case body 13b of No. 3, there is no protrusion and the surface is flat. Further, the screw 28 is fixed to the fixing member 8.
The first and second divided case bodies 13b and 13a are screwed together with the second female screw portion 83 to be coupled with sufficient strength, but the overall size of the case 13 is determined by the thickness of the plate 81 and the second divided case. It is determined by the size of the case body 13b in the X direction. Therefore, the electronic control unit 2 can be made compact while ensuring a certain strength or more. Furthermore, X
Since the length L in the direction is set to be short, a short screw 28, that is, a general-purpose screw 28 can be used to join the first and second divided case bodies 13b and 13a.

Next, when the electronic control unit 22 is formed as described above, the flow control valve (not shown) and the solenoid 6 are set in predetermined positions of the housing 3 as shown in FIG. After the case 13 and the housing 3 assembled as described above are arranged at predetermined positions on the base plate 7, the bolt insertion holes (not shown) of the base plate 7 and the bolt insertion holes 13e of the mounting boss 13f are inserted. After fixing the base plate 7 and the housing 3, the fixing bolt 29 is screwed into the female screw hole of the housing 3 and the base plate 7 is directly fastened to the lower surface of the housing 3 by the fixing bolt. .

At this time, the fixing bolt 29 is attached to the divided case body 1.
Since the bolt insertion hole 13e of the mounting boss 13f formed integrally with the 3b is screwed and fastened, the electronic control unit 2 is integrally mounted and fixed to the hydraulic unit 1. As shown in FIG. 2, one end portion of the base plate 7 is provided with a mounting screw portion 7b for mounting on the chassis of the vehicle.

In the above embodiment, the split case body 13 is used.
The screws 28 are fixed at the four corners of a and 13b, but the fixing place and the number are not limited to this, and a plurality of fixing members 82 are projected from the plate 81 to the second divided case body 13a side. At the same time, the screw supporting member 92 may be provided in the outer peripheral direction from the outer peripheral surface of the second divided case body 13a corresponding to the fixing members 82, and the screw supporting member 92 may be fixed by the screw 28 as described above.

[0032]

As described above, according to the present invention, the electronic control unit is constituted by the first and second divided case bodies which are finished in a shape that allows them to be integrated with each other, and the first divided case is formed. While projecting a plurality of fixing members, a plurality of screw supporting members corresponding to the fixing members are projectingly provided on the second split case body to mutually connect the first and second split case bodies. The screw is inserted into a screw supporting hole provided in the screw supporting member in a state of being engaged with the screw supporting member, and a tip end portion of the screw is engaged with a female screw portion formed in the fixing member. Since the two divided case bodies are joined together, the electronic control unit can be made compact while ensuring a certain strength or more.

Further, when the screw supporting member is provided close to the first divided case body and the first and second divided case bodies are joined, the length of the screw including the fixing member and the screw supporting member in the longitudinal direction is increased. Since the length is shorter than the joined body of the first and second case bodies, the first and second divided case bodies can be integrated with each other by a relatively short screw.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a unit integrated system having a structure of an electronic control unit according to the present invention.

FIG. 2 is a perspective view showing an integrated state of the system of FIG.

FIG. 3 is an exploded perspective view showing a case of the electronic control unit according to the present invention.

FIG. 4 is a perspective view showing a joined state of the case of FIG.

FIG. 5 is a plan view showing an example of a unit integrated system which is a background art of the present invention.

FIG. 6 is a diagram showing a case of a conventional electronic control unit.

FIG. 7 is a diagram showing a case of a conventional electronic control unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hydraulic control unit 2 Electronic control unit 13 Case 13a Second split case body 13b First split case body 28 Screw 82 Fixing member 83 Female screw portion 92 Screw supporting member 93 Screw supporting hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Isao Isao 1-3 Shimano, Konohana-ku, Osaka City Sumitomo Electric Industries, Ltd. (72) Inventor Kenji Nakai 1-1-1, Shimaya, Konohana-ku, Osaka No. 3 Sumitomo Electric Industries, Ltd. Osaka Works (72) Inventor Seiji Ueda 1-3-3 Shimaya, Konohana-ku, Osaka City Sumitomo Denki Industries Co., Ltd. (72) Inventor Hitoshi Hashiba Shimano, Konohana-ku, Osaka 1-3 1-3 Sumitomo Electric Industries Co., Ltd. Osaka Works (72) Inventor Tadashi Wada 1-3-3 Shimaya, Konohana-ku, Osaka City Sumitomo Electric Ki Industries Co., Ltd. Osaka Works

Claims (2)

[Claims] 1. A structure of an electronic control unit in a unit integrated system in which an electronic control unit and a hydraulic unit are integrated, and a control circuit on the electronic control unit side and a solenoid of the hydraulic unit are electrically connected. And the electronic control unit includes first and second split case bodies that are finished in a shape that allows them to be integrated with each other. In the first split case, the electronic control unit is integrated with the second split case body. At the same time, a plurality of fixing members project from the surface facing the second split case body toward the second split case body, and the second split case body respectively corresponds to the fixing members. A plurality of screw supporting members are projected from the outer peripheral surface in the outer peripheral direction, and the screws are attached to the screw supporting members in a state in which the first and second divided case bodies are engaged with each other. It is inserted into a provided screw support hole, and its tip end is screwed into a female screw part formed on the fixing member to join the first and second split case bodies to each other. Structure of the electronic control unit in the system. 2. A length including the fixing member and the screw supporting member in a longitudinal direction of the screw in a state where the first and second divided case bodies are joined to each other is the first and the second. So that it is shorter than the joined case of the split case body,
The structure of the electronic control unit in the unit integrated system according to claim 1, wherein the screw support member is provided in the vicinity of the first divided case body.