JP2001282303A - Electronic controller and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily change the circuit constitution of an electronic controller and to standardize a circuit board constituting this device. SOLUTION: This electronic controller 1 is constituted so that plural objects to be controlled (an automatic motor 100, an engine 102, and electronic throttle 104) can be controlled, and provided with functional boards (an ECT control board 10, an ENG control board 12, and an electronic throttle control board 14) divided for each object to be controlled as circuit boards constituting the electronic circuit. Then, the electric connection of those functional boards 10, 12 and 14 to a connector 2 is indirectly performed through a flexible board 18. Therefore, even when a certain object to be controlled is changed, the functional board corresponding to this object can be displaced. Also, even when the type of the connector 2 is changed, the layout of the functional boards 10, 12 and 14 can not be affected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electronic control device and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, an external control object (for example, various actuators such as an electromagnetic solenoid) is supplied with electric power to be driven, and an electronic control device (for example, an engine control or a speed changer) for controlling the operation is provided. An in-vehicle electronic control device that performs control is known.

FIG. 5 illustrates an electronic control unit mounted on a vehicle. For example, in this electronic control device, a control circuit 531 for electronic throttle control, a control circuit 532 for electronic shift control (ECT), and an engine (EN)
G) A plurality of circuits having different functions, such as a control circuit 533 for control and an input / output circuit 534,
They are arranged on one circuit board 530 in a complicated manner.

The input / output circuit 534 includes a connector 5
35 connector pins 535a are connected. That is,
Transmission and reception of electric signals between the inside and the outside of the housing 538 are relayed by the connector pins 535a inserted into the through holes of the circuit board 530 and joined by soldering or the like. Then, the electronic circuit operates as described above to input and output an electric signal (including an energizing current for driving the actuator to be controlled) through the connector pin 535a, thereby providing an external signal to the housing 538. The control target is controlled.

[0005]

SUMMARY OF THE INVENTION Such a circuit board 53
The layout on 0 needs to be changed according to the contents of the functions that the electronic control device should have. However, in a situation where the electronic control device is becoming more sophisticated, a more complicated pattern design is required due to the higher wiring density and mounting density accompanying the higher functionality, and accordingly, changes in the functions are required. It has become difficult to redesign circuits.
This leads to an increase in the design period of the electronic circuit, which contributes to an increase in cost.

Further, the layout of the circuit board needs to be changed depending on the type of the connector. For example, FIG.
Although the necessary functions of the circuit board 530 of the electronic control device are the same as those of the above-described electronic circuits 531 to 534, depending on the type of the connection cable or the like, the connector 535 may be used.
When the form (shape, size, etc.) of the connector pins 535a is different, it is necessary to change the layout of the circuit board 530 accordingly. As described above, even when the circuit has the same function, it is necessary to design a plurality of types of circuits in accordance with the connector, which has contributed to prolonging the design period.

[0007] The present invention has been made in view of such a problem, and an object of the present invention is to make it possible to easily change the circuit configuration of an electronic control unit and to standardize a circuit board.

[0008]

In order to achieve the above object, an electronic control device according to the present invention (claim 1) comprises an electronic circuit for controlling an external control object. Has a plurality of function-specific boards classified by function. That is, the electronic circuit of the electronic control unit is divided into a plurality of functional blocks, and each functional block is formed on a separate substrate (that is, a substrate for each function).

Therefore, even when a certain function is changed, added or deleted, the circuit configuration can be easily changed by replacing the function-specific board of the function block to which the function belongs. Play. In addition, even when a certain functional block is changed, added, or deleted as a whole, it can be easily coped with by replacing, adding, or deleting a corresponding functional board.

In order for the electronic circuit to transmit and receive an electric signal to and from an external control object via the connector, at least one of the function-specific boards only needs to be electrically connected to the connector. In this electronic control device, the electrical connection is realized via a flexible connection wire.
That is, the connector pins are not directly connected to the function-specific board, but are indirectly connected at least via the connection wires.

Therefore, even if the type of the connector changes, the difference can be absorbed by changing the form of the connection wire, and it is possible to suppress the influence on the layout of the functional substrate. Therefore, it is possible to promote the standardization of the function-specific boards and the reduction of the number of design steps.

Thus, standardization of connectors and housings is also possible. That is, in the connector, depending on the type of the cable connecting the electronic control device and the control target,
The connection structure on the outside of the housing is determined. However, the structure on the inside of the housing, such as the arrangement and shape of the connector pins, has conventionally required to be changed in consideration of the layout of the circuit board. In some cases, the structure of the housing also needs to be changed in relation to the circuit board.

On the other hand, in the electronic control device of the present invention, the connector pins are not directly connected to the board, so that the standardization of the connector can be promoted. The standardization of the housing can be promoted with the standardization of the board. Further, in the electronic control device of the first aspect,
Since an optimal type of substrate can be used for each functional substrate, it is also advantageous in terms of material cost. That is, in the past, since the entire electronic circuit was constituted by a single substrate, it was necessary to make the entire substrate have a high heat dissipation for some circuits requiring high heat dissipation, For some circuits requiring high-density mounting, it is necessary to form the entire substrate into a higher-order multilayer structure, which raises a problem that the material cost increases.

On the other hand, according to the electronic control device of the first aspect, since an appropriate type of substrate can be selected according to the function of each functional substrate, material costs can be suppressed. . Further, the electronic control device according to the first aspect employs a configuration in which the plurality of functional substrates are arranged so that the connection portions with the connection wires face in substantially the same direction. Therefore, after arranging the functional substrates on the housing, the connecting wires are used to electrically connect a plurality of functional substrates to the connector collectively, or the connecting wires are used to electrically connect the functional substrates to each other. And so on.

[0015] By the way, various modes can be considered according to the function. If the electronic control device is configured to control a plurality of controlled objects, the electronic control device may be classified according to the controlled object. An embodiment in which the above is provided as a functional substrate is considered. In other words, the boards having different control targets are provided as the functional boards. For example, when the electronic control device is mounted on a car, the functions of the electronic circuit are controlled such as a board for controlling the engine, a board for controlling the transmission, and a board for controlling the electronic throttle. Target (engine,
It is conceivable that the functional blocks are divided into functional blocks for each of transmissions, electronic throttles, and the like, and each functional block is realized on a separate functional substrate.

Further, as a mode for classifying by function, a mode in which a class is divided according to the processing function and provided as a function-specific substrate is conceivable. Processing functions include an input function that takes in external electrical signals, an arithmetic function that performs numerical and logical operations, a control function that controls the flow of data and the execution of instructions, a storage function that stores programs and data, and an electrical signal. An output function for outputting to the outside and other information processing functions. In addition, the division according to the processing function means that the electronic circuit of the electronic control device is regarded as a combination of blocks (blocks) of an appropriate information processing function and divided into a plurality of boards (that is, boards according to functions) for each block. However, the input function, the arithmetic function, the control function, the storage function, the output function, and other information processing functions are not limited to the case where they are all divided into different boards. For example, an input circuit that realizes an input function as one function block, an output circuit that realizes an output function as one function block, and a control circuit that realizes an arithmetic function, a control function, and a storage function as one function block may be used. , According to the processing function.

There are various possible modes for electrically connecting the connector and the functional substrate by the connection wires. For example, in order to connect a connection wire to a connector pin of a connector, another connector configured to be detachable from the connector pin is provided on the connection wire, and the connector on the connection wire side is connected to the connector on the housing (ie, (A connector for relaying a signal between the inside and the outside). Further, in order to connect the connection wire to the function-specific board, it is conceivable that a pair of connectable connectors are provided on the connection wire and the function-specific board, and both are connected via the pair of connectors. .

However, such an indirect connection increases the number of components of the electronic control unit and may complicate the manufacturing process. Therefore, it is preferable to connect the connection wires to the functional substrate and the connector pins as described in claim 4, so that the electrical connection between the connector and the functional substrate can be achieved without increasing the number of components. it can. The connection to the connector pins or the function-specific substrate can be performed by, for example, soldering.

As the connection wires, wires each having a separate structure may be used, but this would increase the number of parts and also necessitate the joining operation to be performed one by one. In some cases, a flexible printed wiring board may be used. A flexible printed wiring board is a thin strip-shaped substrate, so it does not take up much space, which is advantageous for miniaturization of the device. In addition, it is possible to form a plurality of signal lines (wiring patterns) on one sheet. Since it is possible, the number of parts is reduced.

Further, the flexible printed wiring board includes:
The connection can be easily made by inserting the connector pins into the through holes of the flexible printed wiring board. Also, the plurality of signal lines formed on the flexible printed wiring board can be connected to the functional substrate at a time (for example, by soldering). In this regard, it is preferable that the connection wires be formed of a flexible printed wiring board, since it becomes easy to electrically connect an electronic circuit including a plurality of functional substrates to the connector.

Incidentally, the arrangement (arrangement) of the connector pins
Does not necessarily correspond to the arrangement (arrangement) of the wiring patterns on the function-specific board, and the signal lines connecting the connector pins and the function-specific board may intersect in the middle. In that case,
If a signal line is to be formed using only the wiring pattern of the flexible printed wiring board, the wiring patterns will intersect on the flexible printed wiring board.

As a result, it becomes necessary to form a plurality of conductor layers on the flexible printed wiring board, which increases the cost of the flexible printed wiring board. Further, when the number of layers of the flexible printed wiring board is increased, the flexibility is reduced, so that it may be disadvantageous that the flexible printed wiring board becomes weak against vibration or difficult to assemble.

Therefore, it is preferable to adopt a configuration as described in claim 6. That is, a signal having a flexible printed wiring board joined to a functional substrate and a signal line (wiring pattern) for electrically connecting the flexible printed wiring board and the connector to each other as a component of the connection wire. An alignment substrate is provided. Thus, the electronic circuit is electrically connected to the connector via a plurality of signal lines formed by the wiring pattern of the flexible printed wiring board and the wiring pattern of the signal alignment board.

In the connection portion between the signal alignment board and the flexible printed wiring board, the wiring pattern of the signal alignment board is formed so that the plurality of signal lines are aligned corresponding to the wiring pattern of the function-specific board. is there. In this way, even when the signal lines connecting the connector pins and the function-specific boards cross each other, the signal lines can be aligned by the wiring patterns on the signal alignment board to correspond to the arrangement of the wiring patterns of the function-specific boards. In this case, the wiring patterns on the flexible printed wiring board need only be substantially linear (ie, there is no need to cross each other). Then, since the structure of the flexible printed wiring board does not need to have a plurality of layers, it is possible to suppress an increase in cost and a decrease in flexibility.

In the electronic control device, noise is prevented from entering from outside through a connector (ie, a connector pin) or noise generated inside the device is prevented from leaking to the outside according to the use environment. Therefore, an electronic component for absorbing or reducing noise (hereinafter referred to as “electronic component for noise absorption”) may be provided.

However, when the electronic circuit is composed of a plurality of functional boards, the functional boards to which the connection wires are connected (that is, they are electrically connected to the connector to transmit and receive electric signals to and from the outside). It is necessary to provide an electronic component for noise absorption on the function-specific substrate, and such noise countermeasures may be individually different depending on the use environment of the electronic control device. Therefore, even if the substrates are functionally the same, the electronic components for noise absorption will be different, which may cause a disadvantage that standardization of the circuit board is restricted.

Therefore, it is preferable to provide the signal alignment substrate with a noise absorbing electronic component. This eliminates the need to provide the noise-absorbing electronic components on the function-specific boards, so that there is no risk that standardization of those components will be hindered. Now, as a method of manufacturing the electronic control device of the invention (claims 1 to 7), for example, a connector pin and a function-specific board are electrically connected to each other via a connection wire, and then the connection is performed. A method of moving and arranging the body is conceivable. However, when the connected object is moved toward the housing, mechanical stress is applied, and the electrical connection between the connector and the functional substrate may be impaired.

Therefore, the method according to claim 8 is suitable for manufacturing the electronic control device of the present invention. That is, a plurality of functional substrates are arranged in a housing in a board arranging step, and a connector is arranged in the housing in a connector arranging step. Then, after the board arranging step and the connector arranging step, in the connecting step, the connector and the functional substrate are electrically connected by connection wires.

That is, according to the manufacturing method of the eighth aspect, after the connector and the functional substrate are arranged in the housing, the electrical connection between the connector and the functional substrate is realized, so that the flexible printed wiring after connection is realized. It is possible to prevent the stress from being applied to the plate, and it is possible to suppress the occurrence of electrical connection failure.

When the connector and the function-specific board are connected to each other before being arranged in the housing, a jig for holding both (the connector and the function-specific board) to some extent is required. According to the method of claim 8, such a jig is not required. In addition, there is a case where the function-specific boards are to be connected depending on the model of the electronic control device, and a case where it is not necessary to connect the function-based boards. preferable. In order to connect the functional substrates via connection wires before placing them in the housing, a jig for holding them is necessary, and the functional substrates connected to each other must be moved to the housing. This is because electrical continuity may be impaired during the arrangement.

Next, it is conceivable to mount the electronic component on the functional substrate after the functional substrate is arranged in the housing. In this case, it is necessary to mount the electronic components on both sides of the functional substrate. The production of the electronic control device may be troublesome, for example, it may be difficult.

Therefore, a plurality of types of function-specific boards on which electronic components are mounted are prepared in advance, and a function-specific board corresponding to the model of the electronic control device to be manufactured is prepared. May be selected as the “functional substrate to be arranged in the housing”. As a result, in the board arranging step, the selected machine-specific board is arranged in the housing. However, since the electronic parts are mounted on the arranged function-based board in advance, the above-described problem arises. Does not occur, and the electronic control device can be manufactured efficiently.

When arranging the function-specific boards in the housing, a type corresponding to the model of the electronic control device is selected from a plurality of types of function-specific boards prepared in advance. Even if the model of the control device is changed, it is possible to promptly respond to the change. Therefore, there is an effect that an electronic control device of a required model can be supplied flexibly when needed.

According to a tenth aspect of the present invention, a plurality of types of connectors are prepared in advance, and a connector corresponding to the model of the electronic control device to be manufactured is arranged in the housing. It is better to select As a result, in the connector arranging step, a connector electrically connected to the connection wire is arranged in the housing. As this connector, a type corresponding to the model of the electronic control device is selected from those prepared in advance. Therefore, even if the model of the electronic control device to be manufactured is changed, it is possible to promptly respond to the change.

The connection wires may be directly connected (joined) to the connector pins, for example, as in claims 4 and 5, or via a signal alignment board as in claim 6. The connector pins may be electrically connected. However, when employing a structure in which the connection wire is joined to the connector pin, it may be difficult to join the connection wire to the connector pin after disposing the connector in the housing.

Therefore, in the case of employing a structure in which the connection wire is joined to the connector pin, as described in claim 11,
Before the connector arranging step, the connecting wires are connected to the connector pins. In the connector arranging step, the connector to which the connecting wires are connected may be arranged in the housing. Then, the connection between the connector pin and the connection wire can be performed without any problem.

As the connection wires, a flexible printed wiring board may be used.
As described above, the flexible printed wiring board is a thin strip-shaped substrate, so that it does not take up space, and since a plurality of signal lines (wiring patterns) can be formed on one sheet, the number of components is reduced. To play.

Further, a flexible printed wiring board has
Since the connector can be easily connected by inserting the connector pin into the through hole, the manufacturing method of claim 11 can be easily realized. Further, the plurality of signal lines formed on the flexible printed wiring board can be connected to the functional substrate at a time (for example, by soldering). In such a point, if a flexible printed wiring board is used as a connection wire, it is possible to electrically connect an electronic circuit composed of a plurality of functional boards to a connector.
It is preferable because it becomes easy.

In the case where the connection wires are formed by a flexible printed wiring board, a plurality of types of flexible printed wiring boards are prepared as described in claim 13, and from among them, according to the model of the electronic control device. It is better to select the Then, even if the model of the electronic control device to be manufactured is changed, it is possible to quickly respond to the change.

As a method for connecting the flexible printed wiring board to the function-specific board, for example, the position of the flexible printed wiring board to be connected is adjusted to the position of the function-specific board to be connected, and A method of joining (for example, soldering) by heating while applying pressure to the flexible printed wiring board and pressing it against the functional substrate is considered. In addition, the flexible printed wiring board can be bonded to the functional substrate by various methods such as hardening with a resin or bonding with an adhesive. It is necessary to keep the printed wiring board in contact with the functional substrate with a certain force.

Therefore, as described in claim 14, the housing is provided with a support portion (for example, a trapezoidal shape) for supporting the functional substrate, and in the connecting step, the support portion is provided at a portion supported by the support portion. The flexible printed wiring board may be joined to connect the flexible printed wiring board to the functional substrate.

In this way, when the flexible printed wiring board is joined to the functional substrate, the functional substrate does not bend or bend. Therefore, the functional substrate and the flexible printed wiring board can be securely joined, and the reliability of the electrical connection between the functional substrate and the connector can be enhanced.

As for the joining method, since the soldering is simple, in the connecting step, the flexible printed wiring board is soldered to the functional substrate at a portion of the functional substrate which is supported by the housing. It is preferable to join them. If there is no problem in the bonding strength, various methods other than soldering can be used.

[0044]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram illustrating a configuration of an electronic control device 1 as one embodiment. FIG. 1 (b) shows FIG.
FIG. 2A is a diagram schematically illustrating the inside of the electronic control device 1 from the direction indicated by A in FIG.

The electronic control unit 1 of this embodiment is a vehicle-mounted electronic control unit, and as shown in FIG.
00, the engine 102 and the electronic throttle 104 are controlled. These automatic transmission 100, engine 102 and electronic throttle 104
Corresponds to the “controlled object” in the claims, and the electronic control unit 1
Has a connector 2 for transmitting and receiving electric signals to and from these controlled objects.

The connector 2 is for transferring electric signals between the inside and the outside of the housing 4, and includes a housing lid 4 a and a housing side wall which constitute the housing 4 of the electronic control unit 1. Of the portion 4b and the housing bottom 4c, it is fixed by screws 8 near the edge of the housing bottom 4c. The housing bottom 4c is formed beforehand integrally with the housing side wall 4b.
Can be exposed to the outside of the housing 4 from a side wall opening 4d formed in a part of the housing side wall 4b.

In the connector 2, a structure capable of connecting an external control object is formed at a portion facing the outside of the housing 4. In this embodiment, a cable 101 connected to the automatic transmission 100 is connected to the connector 101. A cable 103 connected to the engine 102 and a cable 105 connected to the electronic throttle 104 can be connected.

In the connector 2, a connector pin 6 for exchanging an electric signal between the inside and the outside of the housing 4 protrudes from a portion facing the inside of the housing 4. A large number of connector pins 6 are arranged in a row along the longitudinal direction of the connector 2.

The housing bottom 4c is configured to be able to fix a plurality of functional boards for constituting an electronic circuit of the electronic control unit 1 in addition to the connector 2. That is, the support portions 5a and 5b for holding the functional substrates are formed in a trapezoidal shape on the housing bottom 4c, and the functional substrates are screwed on the support portions 5a and 5b. It can be fixed with.

As shown in FIG. 1, in this embodiment, a board for controlling the automatic transmission 100 (hereinafter referred to as an "ECT control board") is provided on the housing bottom 4c as a board for each function.
10. A board for controlling the engine 102 (hereinafter, referred to as a board)
An “ENG control board” 12 and a board (hereinafter, “electronic throttle control board”) 14 for controlling the electronic throttle 104 are arranged, and the supporting portions 5 a and 5 b
Are fixed to the supporting portions 5a and 5b with screws 16. Then, these functional substrates 10, 12,
At 14, CPUs and other electronic components 20, 22, 24 are mounted on both sides of the front and back,
Circuits for controlling 00, 102, and 104 are formed.

The plurality of functional boards 10, 12, 14 are arranged substantially in parallel (preferably parallel) to the direction in which the connector pins 6 are arranged. It should be noted that the functional substrates 10, 12,
Reference numeral 14 denotes cables 101, 103, and 1 that reach respective control targets.
05 are arranged so as to correspond to the connection position with respect to the connector 2.

The plurality of functional substrates 10, 1
2 and 14, the functional substrates 10, 12, and 12 are provided at portions (specifically, edges) close to the connector 2 as connection wires for achieving electrical connection with the connector 2.
14, a common flexible printed wiring board (hereinafter, referred to as
A “flexible substrate” 18 is bonded.
The connection portions of the flexible substrates 18 in the functional substrates 10, 12, and 14 are supported by the support portions 5a of the housing bottom 4c.
The flexible substrate 18 is supported from the opposite side.

The flexible board 18 is formed with a through-hole into which the connector pin 6 can be inserted. The connector pin 6 is joined to the flexible board 18 by being inserted into the through-hole and soldered. ing. As described above, the wiring pattern 18a is formed on the flexible substrate 18 connected to the functional substrates 10, 12, and 14 and the connector 2, and the wiring pattern 18a is formed.
The electrical connection between the function-specific boards 10, 12, 14 (specifically, the wiring pattern) and the connector 2 (specifically, the connector pins 6) is realized by a part of them, and the functional-specific boards 10, 12 and 14 are realized by another part. The electrical connection between 12, 14 is realized.

The electronic control unit 1 of the present embodiment having such a configuration is preferably manufactured by the following procedure, which will be described with reference to FIG. First, as illustrated in FIG. 2A, a functional substrate on which electronic components 20, 22, 24, and the like are mounted is prepared in advance. These are standardized (shape, size, etc.) for each control target. Among them, depending on the function-specific board (for example, the ECT control board 10 or the ENG control board 12), a plurality of types are used. Prepare in advance.

For example, regarding the ECT control board 10, 4
Substrate for automatic transmission with stepped transmission (ECT1), Substrate for automatic transmission with six-step transmission (ECT2), continuously variable transmission (CVT)
Eave plate for automatic transmission (ECT3), ...
A plurality of types of boards are prepared for each type of the automatic transmission 100 to be controlled. Substrates ECT1, ECT2, EC for controlling these automatic transmissions 100
T3 is formed as having a standardized shape and size, and can be replaced with each other.

Further, regarding the ENG control board 12, 4
Substrate for engine (ENG1), substrate for engine 6 (ENG2), substrate for engine 8 (ENG1)
1), engine 1 as the control target
A plurality of types of substrates are prepared in advance for each type 02. Then, a substrate EN for controlling the engine 102
G1, ENG2 and ENG3 are also formed to have a standardized shape and size so that they can be replaced with each other.

However, it is not essential to provide a plurality of types of boards in advance for each control target (each function), and there is only one control target (in this embodiment, the electronic throttle 10
Regarding 4), only one type of functional substrate may be used. The prepared substrates for each function are made of an appropriate type of substrate material for each control target and for each type of control target. That is, if the control target and its type are different, various points such as the complexity of the circuit and the amount of heat radiation are different. Therefore, an appropriate type of substrate is used according to such a difference. For example, for a function-specific board whose required control processing content is relatively complicated, a board having a large number of layers (for example, a multilayer printed wiring board) is used. As the substrate, a substrate made of a material having high heat dissipation (for example, a printed wiring board using a metal material for a core or a base, a printed wiring board using ceramic, or the like) is used.

Now, a combination according to the model of the electronic control unit 1 to be manufactured is selected from the function-specific boards prepared in advance as described above, and the corresponding function-specific board is mounted on the housing bottom 4.
c. For example, if the electronic control device 1 to be manufactured is
In the case of a model that controls a five-speed automatic transmission, a four-cylinder engine, and an electronic throttle, as shown in FIG. ECT2) and select ENG control board 12
Board for four cylinder engine (ENG1)
Then, the electronic throttle control board 14 is selected and arranged on the housing bottom 4c. This corresponds to the “substrate arrangement step” in the claims.

On the other hand, the connector 2 and the flexible substrate 18
As shown in FIG. 2 (c), a plurality of types of connectors and flexible printed wiring boards are prepared according to the type of the electronic control device. Select one according to. Then, as shown in FIG. 2D, the selected flexible board 18 is joined to the connector pins 6 of the selected connector 2 by soldering.

In this manner, the connector 2 in which the flexible board 18 is connected to the connector pin 6 is connected to the housing bottom 4c on which the functional boards 10, 12, and 14 are arranged as shown in FIG. Deploy. This corresponds to the “connector arranging step” in the claims.

Thereafter, as shown in FIG. 2 (f), the flexible substrates 18 are joined to the portions of the functional substrates 10, 12, 14 supported by the support portions 5a, whereby the functional substrates 10, 12, , 14 and the connector 2, an electrical connection between the ECT control board 10 and the ENG control board 12, and an electrical connection between the electronic throttle control board 14 and the ENG control board 12. Realize the connection. Specifically, first, solder is attached to connection portions on the upper surfaces of the functional substrates 10, 12, and 14 (that is, the respective portions facing the same direction to which the flexible substrate 18 is to be connected). Then, the end of the flexible substrate 18 is pressed from above (that is, from the same direction) by the heated crimping jig 26 against the connection portion to melt the solder, thereby attaching the flexible substrate 18 to each functional substrate 10. , 1
Bonding with 2 and 14 is aimed at.

According to the above-described electronic control device 1 of the present embodiment and the method of manufacturing the same, the following effects can be obtained. (1) That is, the electronic control unit 1 controls a plurality of control targets (the automatic transmission 100, the engine 102, the electronic throttle 10
4) and a function-specific board (ECT control board 10, ENG control board 12, ENG control board 12,
Electronic throttle control board 14). Therefore,
Even if the type of a control target is changed, the circuit configuration can be easily changed only by changing the function-specific board corresponding to the control target. Also, in the case of an electronic control device to be mounted on an automobile, a certain control target may or may not be mounted depending on a destination or a vehicle type of the vehicle, but even in such a case, it is applicable. It can be easily dealt with by adding or deleting a functional substrate.

(2) In the electronic control unit 1,
From various types of substrates with different heat dissipation and number of layers,
Since an appropriate type of substrate is used for each of the functional substrates 10, 12, and 14, the material cost can be reduced. (3) In the electronic control unit 1, the function-specific substrate 1
Electrical connection between the connectors 0, 12, and 14 and the connector 2 is indirectly achieved via the flexible board 18. Therefore, even if the type of the connector 2 changes, the difference can be dealt with by changing the shape of the flexible board 18 or the wiring pattern of the flexible board 18, which affects the layout of the functional boards 10, 12, and 14. Less. Therefore, it is possible to promote the standardization of the function-specific boards and the reduction of the number of design steps. Thus, standardization of connectors and housings can be promoted.

(4) In the electronic control unit 1,
A flexible substrate 18 is used as a flexible connection wire, and the flexible substrate 18 is used as the functional substrate 1.
0, 12, 14 and connector pins 6
Is also joined. This makes it possible to achieve electrical connection between the connector 2 and the function-specific boards 10, 12, and 14 without increasing the number of components.

(5) In the electronic control unit 1,
The flexible substrate 18 includes a plurality of functional substrates 10 and 1.
2, 14 are connected from the same direction. That is, the functional substrates 10, 12, and 14 are arranged such that the connection portions of the functional substrates 10, 12, and 14 with the flexible substrate 18 face the same direction. For this reason, the functional substrates 10, 12, 1
After arranging the flexible substrate 4, it is easy to connect the flexible substrate 18 to the functional substrates 10, 12, and 14. That is, the plurality of functional substrates 10, 12, 14 are connected to the connector 2
It is easy to electrically connect the circuit boards to each other and to electrically connect the functional substrates 10, 12, and 14 to each other.

(6) When manufacturing the electronic control unit 1, a plurality of functional boards 10, 12, 14 and the connector 2
After being disposed in the housing 4, electrical connection between the functional substrates 10, 12, 14 and the connector 2 and electrical connection between the functional substrates 10, 12, 14 are performed by the flexible substrate 18. Therefore, there is little possibility that a failure occurs in the electrical connection between the two, and no special jig is required.

(7) In the manufacture of the electronic control unit 1, a plurality of types of functional boards on which electronic components are mounted are prepared in advance (FIG. 2A), and from among them, the manufacture should be performed. Function-specific boards 10, 12, according to the electronic control device 1,
By selecting 14 and arranging it in the housing 4, the electronic control unit 1 can be manufactured efficiently. Further, even if the model of the electronic control device to be manufactured is changed, it is possible to promptly respond to the change.

(8) In addition, a plurality of types of connectors and flexible printed wiring boards are prepared in advance, and a connector 2 and a flexible board 18 corresponding to the electronic control device 1 to be manufactured are selected from among them. Electronic control unit 1
Therefore, even if the model of the electronic control device to be manufactured is changed, it is possible to promptly respond to the change.

(9) In the manufacture of the electronic control unit 1, the flexible board 18 is joined to the connector pins 6 before the connector 2 is arranged on the housing 4 (ie, the connector arranging step). The connection between the connector pins 6 and the flexible substrate 18 can be easily performed.

(10) Further, the connector 2 and the function-specific board 1
For electrical connection with the flexible substrates 0, 12, and 14, the flexible substrates 18 are supported on the functional substrates 10, 12, and 14 at the portions supported by the housing 4 (specifically, the support 5 a of the housing bottom 4 c). Is to be joined. During the joining, the functional substrate does not bend or bend,
The functional substrates 10, 12, 14 and the flexible substrate 18 can be securely joined together, and the functional substrates 10, 12, 1
The reliability of the electrical connection between the connector 4 and the connector 2 can be increased.

Next, a second embodiment will be described with reference to FIG. FIG. 3 is a diagram schematically showing an internal configuration of an electronic control unit 201 as a second embodiment. Fig. 3 (b)
FIG. 3 is a diagram schematically showing the inside of the electronic control device 201 from the direction indicated by A in FIG.

The electronic control unit 201 of this embodiment is also a vehicle-mounted electronic control unit, and controls the same control target as that of the first embodiment (already shown in FIG. 1 and not shown in FIG. 3). And a connector 202 for transmitting and receiving electric signals to and from the control objects.

That is, the connector 202 is for transmitting and receiving electric signals between the inside and the outside of the housing 204, and includes a housing lid 204 a, Side wall 204b and housing bottom 20
4c, a screw 208 is provided near the edge of the housing bottom 204c.
It is fixed at. The housing bottom portion 204c is provided on the housing side wall portion 2.
04b is formed integrally in advance with the connector 202b.
Is a side wall opening 2 formed in a part of the housing side wall portion 204b.
From 04d, it can be exposed to the outside of the housing 204. In the connector 202, a structure that can connect a cable connected to an external control target is formed at a portion facing the outside of the housing 204.

In the connector 202, the housing 204
A connector pin 206 for realizing the transfer of an electric signal between the inside and the outside of the housing 204 protrudes from a portion facing the inside of the housing 204. A large number of connector pins 206 are arranged in a row along the longitudinal direction of the connector 202.

The electronic control unit 201 according to the second embodiment is now described.
Differs from the electronic control device 1 of the first embodiment in the manner of dividing the function-specific boards. That is, the electronic control unit 1 of the first embodiment has a functional board divided according to a control target, whereas the electronic control unit 201 of the second embodiment has a processing function. It is provided with functionally divided substrates. Specifically, the input circuit board that realizes the input function as one functional block is formed by various electronic components 220 as the function-specific board.
"0", an "output circuit board 212" in which an output circuit that realizes an output function as one functional block is formed by various electronic components such as the power transistor 222, and an arithmetic function, a control function, and a storage function are realized as one functional block. The control circuit includes a “control circuit board 214” formed by various electronic components such as the CPU 224.

These functional substrates 210, 212, 214
Are support portions 205a, 205 provided on the housing bottom portion 204c.
The input circuit board 210 and the output circuit board 212 are arranged substantially in parallel (preferably in parallel) with the direction in which the connector pins 206 are arranged.

In the input circuit board 210 and the output circuit board 212, portions (edges) close to the connector 202 are connected to the boards 210 and 212 as connection wires for electrical connection with the connector 202. A common flexible substrate 218 is joined. The connecting portion is connected to the flexible substrate 218 by the support portion 205a.
And is supported from the opposite side. The flexible substrate 218 is joined to the connector pin 206 by soldering in the through hole as in the first embodiment. A wiring pattern 218 a is formed on the flexible substrate 218, and the wiring pattern 218 a
8a, electrical connection between the input circuit board 210 and the connector 2 is achieved, and another part of the wiring pattern 218a
Thus, the electrical connection between the output circuit board 212 and the connector 202 is achieved.

On the other hand, the control circuit board 214 is connected to the connector 2 with the input circuit board 210 and the output circuit board 212 interposed therebetween.
02 and the common flexible substrate 2
19, it is electrically connected to the input circuit board 210 and the output circuit board 212. The flexible substrate 219 is bonded to the functional substrates 210, 212, and 214, and the functional substrates 210, 212, and 21.
4 are supported from the side opposite to the flexible substrate 219 by a common support portion 205c. The flexible substrate 219 has a wiring pattern 219a.
Are formed, the electrical connection between the input circuit board 210 and the control circuit board 214 is achieved by the wiring pattern 219a, and the output circuit board 212 and the control circuit board 214
Electrical connection with the device.

The electronic control unit 201 of the second embodiment having the above configuration is manufactured by the following procedure. That is,
A function-specific board on which electronic components 220, 222, 224 and the like are mounted in advance is prepared. These are standardized (shape, size, etc.) for each processing function, and a plurality of types are prepared in advance. However, it is not essential to provide a plurality of types of substrates in advance for all processing functions.

The prepared substrates for each function are made of an appropriate type of substrate material for each processing function.
That is, if the processing functions are different, various points such as the complexity of the circuit and the amount of heat radiation are different. Therefore, an appropriate type of substrate is used according to the difference. For example, for a function-specific board whose required control processing content is relatively complicated, a board having a large number of layers (for example, a multilayer printed wiring board) is used. As the substrate, a substrate made of a material having high heat dissipation (for example, a printed wiring board using a metal material for a core or a base, a printed wiring board using ceramic, or the like) is used. In this embodiment, a four-layer BVH board (a multilayer printed wiring board having four conductor layers, and a blind via hole (BVH) is used for interlayer connection) is used as a board for forming the input circuit board 210. Substrate) is used. And, as a board for configuring the control circuit board 214,
A six-layer BVH substrate having a larger number of layers than a four-layer BVH substrate is used, and a substrate having relatively excellent heat dissipation (such as a metal core printed wiring board or a ceramic substrate) is used as the output circuit board 212. ing. The output circuit board 212 has the entire back surface (that is, the housing bottom portion 20).
The supporting portion may be formed so as to be in close contact with the entire surface of the substrate facing 4c). Then, heat can be efficiently dissipated.

From the function-specific boards prepared in advance as described above, a combination corresponding to the electronic control device 201 to be manufactured is selected, and the corresponding combination is selected from the function-specific boards 210 and 21.
2, 214 are arranged on the housing bottom 204c. In addition,
This corresponds to a “substrate arrangement step” in the claims.

On the other hand, for the connector 202 and the flexible boards 218 and 219, a plurality of types of connectors and flexible printed wiring boards are prepared according to the model of the electronic control unit. The one corresponding to 201 is selected. Then, the selected flexible substrate 218 is joined to the connector pins 206 of the selected connector 202 by soldering.
Thus, the flexible board 21 is
8 is connected to the function-specific board 210,
It is arranged on the housing bottom 204c where the 212 and 214 are arranged. This corresponds to the “connector arranging step” in the claims.

Thereafter, the support portion 205 of the input circuit board 210 and the output circuit board 212 which is close to the connector 202
The flexible substrate 218 is joined to the portion supported by a by soldering in the same manner as in the first embodiment. Thereby, the input circuit board 210 and the output circuit board 21
2 and the connector 202 are electrically connected.

In the input circuit board 210, the output circuit board 212, and the control circuit board 214, the flexible board 219 is joined by soldering to a portion supported by the common support portion 205c. This allows
The electrical connection between the input circuit board 210 and the output circuit board 212 and the control circuit board 214 is established.

The electronic control unit 2 of the second embodiment described above
01 and its manufacturing method have the following effects. (11) First, as the circuit board for configuring the electronic circuit of the electronic control unit 201, there are a plurality of function boards 210, 212, and 214 classified according to processing functions. Therefore, even when the specification of a certain processing function is changed, the circuit configuration can be easily changed only by changing the function-specific board corresponding to the specification.

(12) Among the various types of substrates having different heat radiation properties, the number of layers, etc., the functional substrates 210, 21
Since an appropriate type of substrate is used for each 2,214, material costs can be reduced. (13) The function-specific boards 210 and 212 and the connector 2
02 is indirectly established via a flexible substrate 218. Therefore, even if the type of the connector 202 changes, the difference is the
Of the flexible substrate 218 and the wiring pattern of the flexible substrate 218.
2 has little effect on the layout. Therefore, it is possible to promote the standardization of the function-specific boards and the reduction of the number of design steps. Thus, standardization of connectors and housings can be promoted.

(14) A flexible board 218 is used as a flexible connection wire, and the flexible board 218 is joined to the functional boards 210 and 212 and also to the connector pins 206. I have.
This makes it possible to achieve electrical connection between the connector pins 206 and the functional boards 210 and 212 without increasing the number of components.

(15) In addition, the flexible substrate 218,
219, corresponding functional substrates 210, 212, 2 respectively
14 are connected from the same direction. That is, the connection portions of the functional substrates 210, 212, and 214 with the flexible substrates 218 and 219 are oriented in the same direction. For this reason, after disposing the functional substrates 210, 212, and 214 on the housing bottom 204c, the flexible substrates 218 and 219 are respectively replaced with the corresponding functional substrates 21.
0, 212, 214.

(16) Further, there is an effect that the operational stability against heat can be improved. That is, in the electronic control device having the conventional structure (see FIG. 5), a high heat generating element 536 having a large amount of heat generation such as a power transistor mounted on an output circuit portion of the input / output circuit 534 is mounted on the control circuit. There is a possibility that heat is applied to a heat-sensitive element 537 such as a CPU via the substrate 530 to lower its operation stability. As a countermeasure, various measures have been considered, such as separating them as much as possible on a single circuit board 530. However, there is a limit to increasing the size of a single board, and the influence of heat is sufficiently reduced. Could not be suppressed.

On the other hand, the electronic control unit 2 of this embodiment
01, the output circuit board 212 and the control circuit board 2
14 is configured as a separate substrate, heat transmitted from a high heat-generating element such as the power transistor 222 to a heat-sensitive element such as the CPU 224 can be suppressed, so that a decrease in operation stability can be prevented. It is.

(17) In manufacturing the electronic control device, after a plurality of functional substrates 210, 212, 214 and the connector 202 are arranged on the housing bottom 204c, predetermined electrical connections are made by the flexible substrates 218 and 219. I'm trying. Therefore, there is little possibility that a failure occurs in the electrical connection between the two, and no special jig is required.

(18) A plurality of types of functional boards on which electronic components are mounted are prepared in advance, and the functional boards 210, 212, and 210 corresponding to the electronic control device to be manufactured are prepared.
By selecting 214 and arranging it on the housing bottom 204c, the electronic control device 201 can be manufactured efficiently. Further, even if the model of the electronic control device to be manufactured is changed, it is possible to promptly respond to the change.

(19) In manufacturing the electronic control device, a plurality of types of connectors and flexible printed wiring boards are prepared in advance, and a connector 202 and a flexible printed circuit board corresponding to the electronic control device to be manufactured are prepared. Since the substrates 218 and 219 are selected and used for manufacturing the electronic control device 201, even if the model of the electronic control device to be manufactured is changed, the change can be promptly responded.

(20) In manufacturing the electronic control device, before the connector 202 is arranged on the housing bottom 204c (ie, the connector arranging step), the connector pins 2
Since the flexible board 218 is joined to the connector 06, the connector pin 206 and the flexible board 218 can be easily joined.

(21) In manufacturing the electronic control unit, the function-specific boards 210, 212, and 214
At the portions of the housing bottom 204c supported by the support portions 205a, 205c, the corresponding flexible substrates 21
8, 219 are joined, so that the functional substrates 210, 212, 214 do not bend or bend during the joining. Therefore, the function-specific boards 210, 21
2, 214 and the flexible substrate 218, and the functional substrates 210, 212, 214 and the connector 2
02 can be made more reliable.

Next, a third embodiment will be described with reference to FIG. FIG. 4 is a diagram schematically showing an internal configuration of an electronic control unit 301 as a third embodiment. Fig. 4 (b)
FIG. 4 is a diagram schematically showing the inside of the electronic control device 301 from the direction indicated by A in FIG.

The electronic control unit 301 of this embodiment is also a vehicle-mounted electronic control unit, and controls the same control target as that of the first embodiment (already shown in FIG. 1 and not shown in FIG. 4). And a connector 302 for transmitting and receiving electric signals to and from the control objects.

That is, the connector 302 of this embodiment is also
It is for transferring electric signals between the inside and the outside of the electronic control unit 04, and includes a housing lid 304 a, a housing side wall 304 b, and a housing bottom 304 c which constitute a housing 304 of the electronic control device 301. Are arranged on a signal alignment board 317 (described later) fixed near the edge of the housing bottom 304c.

The housing bottom portion 304c is provided on the housing side wall portion 304b.
The connector 302 is integrally formed in advance with a side wall opening 304d formed in a part of the housing side wall portion 304b.
Therefore, it can be exposed to the outside of the housing 304. In the connector 302, a structure capable of connecting a cable connected to an external control target is formed at a portion facing the outside of the housing 304.

In the connector 302, a housing 304
The connector pins 306 for realizing the transfer of an electric signal between the inside and the outside of the housing 304 protrude from a portion facing the inside of the housing 304, and a large number of connector pins 30
Reference numerals 6 are arranged in a row along the longitudinal direction of the connector 302.

The functional substrates 210, 212, and 214 are the same as those of the second embodiment, and are different from those of the second embodiment.
Are supported by support portions 305a, 305b, and 305c provided in the first position. Among these, the input circuit board 210 and the output circuit board 212 are arranged side by side substantially parallel (preferably parallel) to the direction in which the connector pins 306 are arranged. Then, the input circuit board 210 and the output circuit board 2
In 12, a portion (edge) close to the connector 202
Is connected to a flexible board 318 common to both boards 210 and 212 as connection wires for electrical connection with the connector 302. Then, the connection portion is connected to the flexible substrate 318 by the support portion 305a.
And is supported from the opposite side.

The control circuit board 214 is connected to the connector 3 with the input circuit board 210 and the output circuit board 212 interposed therebetween.
02 and the common flexible substrate 3
19, it is electrically connected to the input circuit board 210 and the output circuit board 212. The flexible substrate 319 is joined to the functional substrates 210, 212, and 214, and each connection portion is connected to a common support portion 305.
By c, the flexible substrate 319 is supported from the opposite side. Further, a wiring pattern 319a is formed on the flexible substrate 319, and an electrical connection between the input circuit board 210 and the control circuit board 214 is achieved by a part of the wiring pattern 219a.
And the control circuit board 214 is electrically connected.

The electronic control unit 301 according to the third embodiment is now described.
Is different from the electronic control device 201 of the second embodiment in that the input circuit board 210, the output circuit board 212 and the connector 30
2 and the mode of electrical connection are different. That is, the connector pins 306 are not joined to the flexible board 318, but are soldered in a state of being inserted into through holes of the signal alignment board 317 fixed to the housing 304, and are attached to the signal alignment board 317. Are joined. And
A flexible board 318 is also joined to the signal alignment board 317.

That is, the electronic control unit 301 of the third embodiment
, The input circuit board 210 and the output circuit board 2
The electrical connection between the connector 12 and the connector 302 is established via a wiring pattern 317a of a signal alignment board 317, which is a printed wiring board for signal alignment, and a wiring pattern 318a of a flexible board 318.

At the connection portion between the signal alignment substrate 317 and the flexible substrate 318, the signal alignment is performed so that the plurality of signal lines are aligned in accordance with the wiring pattern of the input circuit board 210 and the wiring pattern of the output circuit board 212. The wiring pattern 317a of the use substrate 317 is formed. The wiring patterns 318a of the flexible substrate 318 are formed substantially linearly without intersecting each other.

The signal alignment board 317 is provided to absorb noise flowing through the signal line between the connector 302 and the input circuit board 210 and noise flowing between the connector 302 and the output circuit board 212. An electronic component 327 (for example, a ceramic capacitor) for noise absorption is mounted.

The electronic control unit 301 of the third embodiment having the above configuration is manufactured by the following procedure.
That is, a functional substrate on which the electronic components 220, 222, 224, etc. are mounted in advance is prepared. This is the second
This is the same as the embodiment.

Then, a combination according to the electronic control unit 201 to be manufactured is selected from the prepared function-specific boards, and the corresponding combination is selected from the function-specific boards 210, 212, and 21.
4 is disposed on the housing bottom 304c. This is
This corresponds to a “substrate arrangement step” in the claims.

On the other hand, the connector 302 and the signal alignment board 3
17, for the flexible boards 318 and 319, a plurality of types of connectors, flexible printed wiring boards, and printed wiring boards as signal alignment boards are prepared according to the model of the electronic control device. The one corresponding to the electronic control device 301 to be selected is selected.
Then, the connector pin 3 of the selected connector 302
06 is joined to the selected signal alignment board 317 by soldering, and the selected flexible board 318 is also joined to the signal alignment board 317 by soldering.

The connector 302 is connected to the housing bottom 304 on which the functional substrates 210, 212 and 214 are arranged.
c. This corresponds to the “connector arranging step” in the claims.
7 is supported by the support portion 305a (that is, a support portion that supports portions of the input circuit board 210 and the output circuit board 212 that are close to the connector 302).

Then, the supporting portions 305a of the input circuit board 210 and the output circuit board 212 near the connector 302 are provided.
The flexible substrate 318 is joined to the supported portion supported by the soldering in the same manner as in the first embodiment. Thereby, the electrical connection between the input circuit board 210 and the output circuit board 212 and the connector 202 is realized.

Further, in the input circuit board 210, the output circuit board 212, and the control circuit board 214, the flexible board 319 is joined by soldering to a portion supported by the common support portion 305c. This allows
Electrical connection between the input circuit board 210 and the output circuit board 212 and the control circuit board 214 is realized.

The connector 302, the housing bottom 304c, and the support 30 in the electronic control unit 301 of the third embodiment.
5a to 305c, the flexible substrates 318 and 319
The connector 202, the housing bottom 204c, and the supports 205a to 205 of the electronic control device 201 of the second embodiment, respectively.
c, corresponding to the flexible substrates 218 and 219,
According to the electronic control device 201 and the method of manufacturing the same according to the third embodiment described above, the effects (1) described in the second embodiment can be obtained.
1), (12), (15) to (19), and (21), and the following effects are obtained.

(22) The electrical connection between the function-specific boards 210 and 212 and the connector 302 is made indirectly through the signal alignment board 317 and the flexible board 318. Therefore, even if the type of the connector 302 changes,
The difference is that the signal alignment substrate 317 and the flexible substrate 3
18 and the wiring patterns 317a and 318a can be changed.
Layout is not affected. Therefore, it is possible to promote the standardization of the function-specific boards and the reduction of the number of design steps. Thus, standardization of connectors and housings can be promoted.

(23) Even if the signal lines connecting the connector pins 306 and the function boards 210 and 212 intersect, the wiring pattern 317 on the signal alignment board 317
a aligns the signal lines, and the functional substrates 210 and 21
Since it corresponds to the arrangement of the two wiring patterns, the wiring pattern 318a on the flexible substrate 318 only needs to be substantially linear. Therefore, the structure of the flexible substrate 318 does not need to have a plurality of layers, and an increase in cost and a decrease in flexibility can be suppressed.

(24) Since the noise absorbing electronic component 327 is provided on the signal alignment substrate 317, the function-specific substrate 2
There is no need to provide the noise absorbing electronic components 327 in the 10, 212, and there is no possibility that the standardization of the functional substrates 210, 212 is hindered. As mentioned above, although one Example of this invention was described, this invention is not limited to the said Example, but can take various aspects.

For example, in the above embodiment, a common flexible board 18 (218, 318) is connected to a plurality of functional boards 10, 12, 14 (210, 212), and these are connected to connectors 2 (202, 302). However, the present invention is not limited to this, and one flexible printed wiring board is prepared for each functional substrate to be connected, and the electrical connection between the functional substrate and the connector is performed. Connection may be achieved. However, this increases the number of components, so it is preferable to use a common flexible substrate 18 (218, 318) as in the above embodiment.

In the third embodiment, a signal alignment board 317 is provided for an electronic control unit 301 having function-specific boards 210, 212, and 214 having different processing functions.
However, the present invention is not limited to this. If necessary, the electronic control unit 1 including the function-specific boards whose control targets are different from each other as in the first embodiment may use the signal alignment board. Provided, the substrates 10 and 1 according to their functions.
The electrical connection between the connectors 2 and 14 and the connector 2 may be configured.

In the third embodiment, the description has been made assuming that the flexible board 318 is electrically connected to the signal alignment board 317, and then the connector 302 is provided on the housing bottom 304c. It is not something that can be done.
That is, the signal alignment board 31 to which the connector 302 is connected.
After the 7 is disposed on the housing 304 (housing bottom 304), the flexible substrate 318 may be bonded (for example, by soldering as described above) to the signal alignment substrate 317 and the functional substrates 210 and 212.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a configuration of an electronic control device according to a first embodiment.

FIG. 2 is an explanatory diagram for illustrating a method of manufacturing the electronic control device.

FIG. 3 is an explanatory diagram illustrating a configuration of an electronic control device according to a second embodiment.

FIG. 4 is an explanatory diagram illustrating a configuration of an electronic control device according to a third embodiment.

FIG. 5 is a diagram for explaining a layout of a circuit board in a conventional electronic control device.

[Explanation of symbols]

1,201,301 ... Electronic control device 2,202,302 ... Connector 4,204,304 ... Housing 5a, 5c, 205a, 205c, 305a, 305c
... Supporting parts 6,206,306 ... Connector pins 10 ... ECT control board 12 ... ENG control board 14 ... Electronic throttle control board 18,218,318,319 ... Flexible board 18a, 218a, 318a, 319a ... Flexible board wiring pattern 20, 22, 24 ... electronic parts 26 ... crimping jig 100 ... automatic transmission 102 ... engine 104 ... electronic throttles 101, 103, 105 ... cable 210 ... input circuit board 212 ... output circuit board 214 ... control circuit board 220 ... Electronic components 222 Power transistor 224 CPU 317 Signal alignment substrate 317a Wiring pattern of signal alignment substrate 327 Electronic components for noise absorption

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3G084 BA05 DA00 DA13 DA24 EA01 EB01 5E344 AA01 AA28 BB03 BB04 DD02 5H004 GA27 GA32 GA33 GB12 MA58 MA60 9A001 BB06 JJ48 KK54

Claims (14)

[Claims] A connector for relaying transmission and reception of an electric signal between the inside and the outside of the housing; and a connector formed inside the housing and for inputting and outputting an electric signal through the connector, so that the outside of the housing is provided. An electronic control device, comprising: an electronic circuit for controlling the control target; and a circuit board for configuring the electronic circuit, wherein a flexible connection wire that is divided according to function and is connected. A plurality of functional substrates arranged so that connection sites with the connection wires face in substantially the same direction, wherein the electronic circuit electrically connects to the connector via the connection wires connected to the functional substrates. An electronic control unit, which is connected to the electronic control unit. 2. The electronic control device according to claim 1, wherein said electronic control device is for controlling a plurality of control targets, and said control target is provided with different control targets as function-specific boards. Electronic control device characterized by the following. 3. The electronic control device according to claim 1, wherein the function-specific boards have different processing functions. 4. The electronic control device according to claim 1, wherein the connection wire is joined to the function-specific board and joined to a connector pin of the connector. Control device. 5. The electronic control device according to claim 4, wherein a flexible printed wiring board is provided as a component of the connection wire. 6. The electronic control device according to claim 1, wherein the connection wires are constituted by a flexible printed circuit board joined to a function-specific board, a flexible printed circuit board, and a connector. A signal alignment substrate having pins joined thereto and having a wiring pattern for electrically connecting them to each other, wherein the electronic circuit comprises a wiring pattern of the flexible printed wiring board and a wiring pattern of the signal alignment substrate. The signal line is electrically connected to the connector via a plurality of signal lines formed by: An electronic control device, which is formed so as to be aligned in accordance with the wiring pattern of (1). 7. The electronic control device according to claim 6, wherein a noise absorbing electronic component is mounted on the signal alignment board. 8. A method of manufacturing an electronic control device for controlling a control object outside a housing by inputting / outputting an electric signal via a connector, comprising: A board arranging step of juxtaposing the housing, a connector arranging step of arranging a connector on the housing, and after the board arranging step and the connector arranging step, at least one of the function-specific boards and the connector by a flexible connection wire And a connecting step of electrically connecting the electronic control devices to each other. 9. The electronic control device to be manufactured according to claim 8, wherein a plurality of types of function-specific boards on which electronic components are mounted are prepared in advance for each function. A method of manufacturing an electronic control device, wherein a function-specific board according to the type of the electronic control device is selected as a substrate to be arranged in the housing. 10. The method for manufacturing an electronic control device according to claim 8, wherein a connector according to the model of the electronic control device to be manufactured is selected from a plurality of types of connectors prepared in advance. A method for manufacturing an electronic control device, wherein the electronic control device is selected as one to be arranged. 11. The method for manufacturing an electronic control device according to claim 8, wherein the connection wire is joined to a connector pin of a connector, and the connection wire is provided prior to the connector arranging step. Connecting a connection wire to a connector pin of the connector; and arranging the connector to which the connection wire is connected in a housing in the connector arranging step. 12. The method of manufacturing an electronic control device according to claim 8, wherein a flexible printed wiring board is used as a component of the connection wire. . 13. The method for manufacturing an electronic control device according to claim 12, wherein a type according to the model of the electronic control device to be manufactured is selected from a plurality of types of flexible printed wiring boards prepared in advance. A method for manufacturing an electronic control device, comprising: 14. The method for manufacturing an electronic control device according to claim 12, wherein the housing has a support portion for supporting a functional substrate, and the housing is supported by the support portion in the connecting step. A method for manufacturing an electronic control device, comprising: joining a flexible printed wiring board to a portion; and electrically connecting the flexible printed wiring board to a function-specific board.