JP2014168983A - Vehicular electronic control unit and method for production thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular electronic control unit capable of inhibiting damage of a circuit board due to water, of securing the drip-proof property of a connector portion and of improving workability when installing to a vehicle, and to provide a method for production thereof.SOLUTION: An electronic control unit is provided with: a circuit board 1 having a board member 11 and a behavior detection sensor 12; a transmission member 3 for transmitting the behavior of a vehicle to the circuit board 1; a fastening member 4 for contacting the circuit board 1 and transmission member 3 to fasten the board 1 with the transmission member 3; a connector 5 having an opening 5a into which the other connector 6 is inserted; and a resin-sealed member 2 for covering at least a part of the circuit board 1, transmission member 3, fastening member 4 and connector 5 while contacting. The resin-sealed member 2 is formed by an expandable resin, and has an eaves portion 22 formed by the expandable resin integrally with the resin-sealed member 2 and extending to cover from above, the opening 5a of the connector 5.

Description

  The present invention relates to a vehicle electronic control unit mounted on a vehicle and a method for manufacturing the same.

  A vehicle electronic control unit that detects the behavior of the vehicle and executes various controls based on the detection result is mounted on the vehicle. Examples of the vehicle electronic control unit include an airbag ECU. An electronic control unit for a vehicle is highly likely to be exposed to water such as dripping of water droplets from an air conditioner or splashing of water during car washing, and is required to waterproof a circuit board including electronic components.

  Here, Japanese Unexamined Patent Application Publication No. 2010-40992 discloses an electronic control device in which a circuit board is covered with resin sealing (resin mold). According to this, the circuit board can be waterproofed.

JP 2010-40992 A

  By the way, the above-mentioned vehicle electronic control unit has a connector installed on a circuit board, and an opening into which another connector attached to an end of the in-vehicle wiring connected to the external electronic circuit is inserted into this connector. The part is formed. Since the opening of the connector is provided in a state exposed from the sealing resin, drip-proofing is required.

  Therefore, conventionally, it has been known that a flange portion extending upward from the upper end of the housing such as a housing case is provided integrally with the housing. However, the casing in which the collar portion is integrated is a die-cast product made of an aluminum material, and the collar portion has no flexibility. Therefore, when the electronic control unit is assembled to the vehicle, when the other connector attached to the end of the in-vehicle wiring connected to the external electronic circuit is inserted into the connector opening and fitted, The work space in the vicinity of the opening is narrow, and the collar part is in the way, so that there is a difficulty in workability.

  The present invention has been made in view of such circumstances, and while being able to suppress water exposure to the circuit board, ensuring the drip-proof property of the connector part, and at the time of assembly to the vehicle An object of the present invention is to provide a vehicle electronic control unit and a method for manufacturing the same that can improve workability.

  A first invention made to solve the above problems includes a board member (11) on which an electronic circuit is formed, and a behavior detection sensor (12) that is installed on the board member and detects the behavior of a vehicle. A circuit board (1), a fixing member (31) fixed to the vehicle, a transmission member (3) that contacts the board member and transmits the behavior of the vehicle to the circuit board, and the circuit board And a fastening member (4) that contacts the transmission member to fasten the circuit board and the transmission member, and is mounted on the end of the in-vehicle wiring that is installed on the board member and connected to the external electronic circuit A connector (5) having an opening (5a) into which another connector (6) is inserted, the circuit board, the transmission member excluding at least the fixing part, the fastening member, and at least the opening are excluded. Small number of the connectors A resin sealing member (2) that covers at least a part of the resin sealing member, and the resin sealing member is formed of a foamable resin and is sealed with the foamable resin. It has a collar part formed integrally with a stop member and extending so as to cover the opening of the connector from above.

  According to this configuration, since the circuit board is contacted / coated (molded) with the resin sealing member, it is possible to suppress water exposure to the electronic circuit of the circuit board. Further, in this configuration, the resin sealing member is formed integrally with the resin sealing member with a foamable resin and has a flange portion that extends so as to cover the opening of the connector from above. Sex can be secured. Furthermore, since the collar portion is formed of a foamable resin and has flexibility, when the electronic control unit is assembled to the vehicle, when the other connector is fitted and connected to the opening of the connector. Workability can be improved.

  A second invention made to solve the above-mentioned problem is a method of manufacturing an electronic control unit according to any one of claims 1 to 7, wherein the circuit board and the transmission member are fastened together. A fastening step of fastening in a predetermined state with a member; a fitting step of fitting a dummy connector in place of the other connector to the connector; and the circuit board and the transmission member fastened to each other A setting step of setting the connector and the dummy connector in a mold; and injecting a foamable resin material into the mold; and the resin together with the circuit board, the transmission member, the connector and the other connector And a molding step of integrally molding the sealing member and the flange portion.

  According to this manufacturing method, it is possible for a vehicle to prevent water from being applied to a circuit board, to secure the drip-proof property of the connector portion, and to improve the workability at the time of assembly to the vehicle. An electronic control unit can be easily manufactured. Moreover, in this manufacturing method, since the dummy connector is fitted to the connector, when there are a plurality of connectors installed on the circuit board, the same mold is used only by changing the dummy connector. Therefore, the cost can be reduced.

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

It is sectional drawing which shows the structure of the vehicle electronic control unit which concerns on Embodiment 1, Comprising: It is the II sectional view taken on the line of FIG. It is explanatory drawing which shows the state which fits another connector to the connector of the vehicle electronic control unit which concerns on Embodiment 1. FIG. It is sectional drawing which shows the structure of the vehicle electronic control unit which concerns on Embodiment 1, Comprising: It is the III-III sectional view taken on the line of FIG. 1 is a perspective view showing a vehicle electronic control unit according to Embodiment 1. FIG. FIG. 2 is an exploded perspective view of the vehicle electronic control unit according to the first embodiment. 1 is a plan view showing a circuit board according to Embodiment 1. FIG. It is the perspective view which looked at the state before fitting another connector with the connector of the resin sealing member which has a collar part concerning Embodiment 1 from the lower part. 4 is a flowchart showing steps of a method for manufacturing the vehicle electronic control unit according to the first embodiment. It is a figure which shows the fitting process of the manufacturing method of the electronic control unit for vehicles which concerns on Embodiment 1, Comprising: (a) is explanatory drawing which shows the state before fitting, (b) is description which shows the state after fitting. FIG. It is explanatory drawing which shows the state at the time of completion | finish of the shaping | molding process of the manufacturing method of the electronic control unit for vehicles which concerns on Embodiment 1. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings. Each figure used for explanation is a conceptual diagram, and the shape and size of each part may not necessarily be exact. For example, the screwing structure (male screw and female screw) is conceptually represented. In the following embodiments, the present invention will be described by taking an airbag ECU as an example of the vehicle electronic control unit.

Embodiment 1
As shown in FIGS. 1 to 7, the vehicle electronic control unit of the present embodiment includes a circuit board 1, a resin sealing member 2, a transmission member 3, a fastening member 4, and a connector 5. Yes. The circuit board 1 includes a board member 11 and an acceleration sensor (corresponding to a “behavior detection sensor”) 12. The substrate member 11 is a plate-like member in which an electronic circuit is formed on at least one of the front surface and the back surface, and is a printed wiring board in this embodiment. The electronic circuit is composed of wiring (not shown) and various electronic components Z.

  As shown in FIGS. 3, 5, and 6, the board member 11 is formed with a fastening portion 111 for fastening with the transmission member 3 to be fastened. The fastening portion 111 is a part of the substrate member 11 and is provided at two locations on the substrate member 11. The fastening portions 111 are each formed in a ring shape. In the center of the ring-shaped fastening portion 111, an insertion hole 11A through which the shaft portion of the fastening member (screw member) 4 is inserted is provided. The fastening part 111 can also be said to be a part that contacts the transmission member 3 and the fastening member 4 in the substrate member 11.

  The fastening portion 111 includes a first surface 111 a that is a part of the front surface (one surface) of the substrate member 11 and a second surface 111 b that is a part of the back surface (the other surface) of the substrate member 11. In this embodiment, the 1st surface 111a is arrange | positioned above the 2nd surface 111b, when installing in a vehicle. A vehicle ground terminal (GND terminal) 11B is formed on at least one first surface 111a. The vehicle ground terminal 11B is connected to an electronic circuit and is formed in a wiring shape. The vehicle ground terminal 11B makes the metal and the electronic circuit conductive when the metal contacts the surface.

  The acceleration sensor 12 is a sensor (so-called G sensor) that detects the acceleration of the vehicle, which is one of the behaviors of the vehicle. The acceleration sensor 12 is installed on the electronic circuit of the board member 11. The circuit board 1 of the present embodiment is a board of an airbag ECU that detects vehicle acceleration and executes airbag deployment control based on the detection result.

  The resin sealing member 2 is a member that covers (molds) the circuit board 1, a part of the transmission member 3, the fastening member 4, and at least a part of the connector 5 while being in contact with each other. Details of the resin sealing member 2 will be described later.

  As shown in FIGS. 1 to 3 and 5, the transmission member 3 is a metal bracket and is fixed to the vehicle to transmit the behavior of the vehicle to the circuit board 1. The transmission member 3 can be attached to the vehicle and the circuit board 1 and has rigidity capable of transmitting the behavior of the vehicle to the circuit board 1. The transmission member 3 is provided for fastening the main body 30, a pair of fixing portions 31 provided for fixing the main body 30 and the vehicle (floor) (not shown), and the circuit board 1. And a pair of board fastening portions 32.

  Specifically, the main body 30 includes a rectangular plate-shaped base portion 30a and a pair of leg portions 30b extending in a right-angle direction from both ends of the short side of the base portion 30a. The pair of fixing portions 31 are integrally formed with the leg portions 30b so as to extend in a direction parallel to the base portion 30a from the distal end of each leg portion 30b toward the outside (a direction away from each other). At the center of each fixing portion 31, an insertion hole 31a is provided through which a shaft portion of a screw member such as a bolt is inserted.

  The board fastening portions 32 are provided at two locations on the base 30a so as to protrude from the upper surface of the base 30a to the circuit board 1 side. Each anti-substrate fastening part 32 is formed in a bottomed cylindrical shape, and an internal thread part is formed on the inner peripheral surface thereof. The protruding front end surface of each counter-substrate fastening portion 32 is in contact with the back surface of the substrate member 11 (the second surface 111b of the fastening portion 111). A space is formed between the base portion 30 a and the substrate member 11 by the counter substrate fastening portion 32, and an electronic circuit can also be formed on the back surface of the substrate member 11.

  The fastening member 4 is a metal fastener that fastens the circuit board 1 and the transmission member 3. In the present embodiment, a screw member (male screw) is employed as the fastening member 4. The fastening member 4 has a head abutting against the surface of the board member 11 (the first surface 111a of the fastening part 111), and a shaft part inserted through the insertion hole 11A of the board member 11 serves as a female thread part of the counter board fastening part 32. It is screwed. The tip of the shaft portion of the fastening member 4 protrudes from the back surface of the transmission member 3. That is, the circuit board 1 and the transmission member 3 are fastened by fastening the fastening member 4 and the board fastening part 32 via the fastening part 111 of the circuit board 1.

  The fastening member 4 has the head pressing the substrate member 11 toward the transmission member 3 and the shaft portion pulling the counter substrate fastening portion 32 toward the substrate member 11. That is, the fastening member 4 generates a fastening force in a direction in which the substrate member 11 and the transmission member 3 are brought close to each other. The fastening member 4 prohibits the fastened substrate member 11 from separating from the transmission member 3 and prohibits the fastened transmission member 3 from separating from the substrate member 11. In this way, the fastening member 4 fastens both the substrate member 11 and the transmission member 3 by applying a force from the outside in the direction in which the board member 11 and the transmission member 3 approach each other.

  The fastening member 4 is in contact with the vehicle ground terminal 11B formed on the first surface 111a. Therefore, the electronic circuit of the circuit board 1 is connected to the vehicle (floor) via the vehicle ground terminal 11B, the fastening member 4, and the transmission member 3, and is grounded.

  The connector 5 is a male connector that is installed on the circuit board 1 and connected to an electronic circuit. One end of the connector 5 is covered and fixed by the resin sealing member 2 and the other end is formed with an opening 5a. Is exposed from one side surface of the resin sealing member 2. The connector 5 has a metal terminal 5b protruding at one end for connection to an external electronic circuit. For example, another connector (female connector) 6 attached to one end of an in-vehicle wiring such as a vehicle harness is inserted into and fitted into the connector 5 from the opening 5a.

  Here, details of the resin sealing member 2 will be described. As shown in FIGS. 1 to 4, the resin sealing member 2 is formed of a molded body obtained by molding a foamable resin, and is formed in a rectangular parallelepiped shape. The resin sealing member 2 is the resin portion of the circuit board 1, the upper end portion of each leg 30b of the transmission member 3, the base 30a and the board fastening portion 32, the fastening member 4, and a part of the connector 5 which are resin molded. It is. The resin sealing member 2 covers the entire circuit board 1, the base 30 a, the counter-to-board fastening part 32, and the fastening member 4. Therefore, since the circuit board 1 is not exposed to the outside at all, water exposure to the circuit board 1 is reliably suppressed. Further, as shown in FIGS. 1, 2, and 4, the connector 5 is installed so that the opening 5 a is positioned on one side surface of the resin sealing member 2. The opening 5a protrudes slightly.

  The resin sealing member 2 has a flange 22 that extends in the horizontal direction from the upper end of the resin sealing member 2 and covers the opening 5a of the connector 5 from above. The flange portion 22 is formed integrally with the resin sealing member 2 with a foamable resin and has flexibility. Therefore, as shown in FIG. 1, the flange portion 22 extending in the horizontal direction from the upper end portion of the resin sealing member 2 is in a state where the tip hangs down so as to cover the opening portion 5 a from the upper end portion on the opening side of the connector 5. It has become. Further, as shown in FIG. 7, a relief portion 23 having a shape following the shape of the upper surface of another connector 6 inserted into the opening 5 a of the connector 5 is formed on the lower surface of the flange portion 22. Thereby, when another connector 6 is fitted into the connector 5, no gap is formed between the upper surface of the other connector 6 and the lower surface of the flange portion 22, so that the drip-proof property is improved.

  The end surface 2 </ b> A on the vehicle (floor) side of the resin sealing member 2 in the installed state of the vehicle electronic control unit is located closer to the circuit board 1 than the fixed portion 31 of the transmission member 3. That is, the end surface 2A of the resin sealing member 2 is separated from the vehicle in a state where the resin sealing member 2 is installed on the plane portion of the vehicle. In other words, even if the transmission member 3 is fixed to the plane of the vehicle, the resin sealing member 2 and the vehicle are not in contact with each other, and there is an interval between them.

  Next, the manufacturing method of the vehicle electronic control unit of this embodiment is demonstrated. As shown in the flowchart of FIG. 8, the manufacturing method of the present embodiment sequentially performs a fastening step S101, a fitting step S102, a setting step S103, and a forming step S104.

  In the first fastening step S <b> 101, the circuit board 1 in which the behavior detection sensor 12 and the connector 5 are installed on the board member 11 and the transmission member 3 are fastened in a predetermined state by the fastening member 4.

  In the next fitting step S102, as shown in FIGS. 9A and 9B, a dummy connector 6A that replaces the other connector 6 is fitted to the connector 5. On the upper surface of the dummy connector 6A, there is provided a relief forming portion 61A for forming a relief portion 23 having a shape following the top surface shape of the other connector 6 to be formed on the lower surface of the flange portion 22.

  In the next setting step S103, the circuit board 1 and the transmission member 3 fastened to each other in the fastening step S101, and the connector 5 and the dummy connector 6A that are fitted to each other in the fitting step S102 are placed in a predetermined state in the mold. Set in and clamp.

  In the next molding step S104, a foamable resin material is injected into the mold and integrally molded together with the circuit board 1, the transmission member 3, the connector 5, and the dummy connector 6A. Thereby, as shown in FIG. 10, the resin sealing member 2 and the flange portion 22 extending from the upper end portion of the resin sealing member 2 so as to cover the upper surface of the dummy connector 6A are integrally formed with the foaming resin. Is done. Thereafter, the formed molded body is taken out from the mold, the dummy connector 6A is removed from the connector 5, and then post-processing is performed as necessary, thereby completing the vehicle electronic control unit shown in FIGS. 1, 3, and 4. Let

  The vehicle electronic control unit of the present embodiment manufactured as described above is inserted into the insertion hole 31a of each fixing portion 31 of the transmission member 3 by inserting the shaft portion of the screw member and fastened to the vehicle (floor). Each fixing portion 31 of the transmission member 3 is fixed at a predetermined position. And the other connector (female connector) 6 with which one end part of in-vehicle wiring, such as a vehicle harness, was inserted and fitted with respect to the connector 5 of an electronic control unit is inserted.

  At this time, the flange 22 formed integrally with the resin sealing member 2 is suspended from the upper end of the resin sealing member 2 so as to cover the opening 5a of the connector 5 (see FIGS. 1 and 4). The other connector 6 is inserted from the opening 5a of the connector 5 while the operator holds the lower end of the collar 22 with his / her fingers and lifts it upward as shown in FIG. Since the flange portion 22 is formed of a foamable resin and has flexibility, it can be easily lifted upward. Thereby, since the opening part 5a of the connector 5 will be in the state open widely, the assembly operation | work of the other connector 6 can be performed easily and workability | operativity improves.

  According to the vehicle electronic control unit of the present embodiment configured as described above, the circuit board 1 is covered with the resin sealing member 2, so that the circuit board 1 can be prevented from being wet.

  Moreover, in this embodiment, since the resin sealing member 2 has the collar part 22 which is integrally formed with the resin sealing member 2 with foaming resin, and extends so that the opening part 5a of the connector 5 may be covered from upper direction. The drip-proof property of the connector 5 portion can be ensured. The flange portion 22 is formed of a foamable resin and has flexibility, so that when the electronic control unit is assembled to the vehicle, another connector 6 is fitted and connected to the opening portion 5a of the connector 5. The workability at the time of performing can be improved.

  Furthermore, since the collar part 22 of this embodiment is suspended from the upper end part of the resin sealing member 2 so as to cover the opening part 5a of the connector 5, the water adhering to the collar part 22 is dripped down and returned. Can not be. Therefore, more reliable drip-proof property can be ensured. In addition, a relief portion 23 having a shape following the shape of the top surface of another connector 6 inserted into the opening 5 a of the connector 5 is formed on the lower surface of the flange portion 22. Therefore, when the other connector 6 is fitted to the connector 5, no gap is formed between the upper surface of the other connector 6 and the lower surface of the flange portion 22, so that the drip-proof property is improved.

  Moreover, according to the manufacturing method of the vehicle electronic control unit of this embodiment, while being able to suppress the water exposure to the circuit board 1, ensuring the drip-proof property of the connector 5 part, and assembling | attaching to a vehicle It is possible to easily manufacture an electronic control unit for a vehicle that can improve workability at the time.

  In particular, in the present embodiment, since the dummy connector 6A is used, when there are a plurality of connectors 5 installed on the circuit board 1, the same mold can be used only by changing the dummy connector 6A. Therefore, the cost can be reduced.

  In addition, according to the present embodiment, the circuit board 1 directly contacts the metal transmission member 3 without using resin or the like, and the transmission member 3 is fixed to the vehicle. It can be transmitted to the substrate 1. That is, the detection accuracy of the acceleration sensor is improved. The detection accuracy of the acceleration sensor is important in the airbag ECU, and this configuration that accurately transmits the behavior of the vehicle is particularly effective in the airbag ECU.

  Further, according to the present embodiment, since the transmission member 3 and the fastening member 4 connect the vehicle ground terminal 11B of the circuit board 1 and the vehicle floor, there is no need to separately prepare a body grounding wiring or the like. It is possible to reduce the number of points and the manufacturing cost.

  In addition, since a bracket is used as the transmission member 3 or a screw is used as the fastening member 4, a general-purpose product can be used for the part, and the manufacturing cost can be reduced. Furthermore, since the fastening portion 111 of the circuit board 1 is formed in a ring shape by providing the insertion hole 11 </ b> A in the board member 11, the manufacture becomes easier than providing the male screw in the board member 11, for example. Further, since the circuit board 1 and the transmission member 3 are screwed, the adhesion and fastening force are high, and the behavior of the vehicle is transmitted to the circuit board 1 with higher accuracy.

  Further, since the counter-to-board fastening portion 32 protrudes from the upper surface of the base portion 30a of the main body portion 30 to the circuit board 1 side, the entire surface of the transmission member 3 does not come into contact with the circuit board 1 and the second surface 111b of the board member 11. An electronic circuit can also be formed on the side. Further, the second surface 111b side of the circuit board 1 can also be contacted / coated (molded) by the resin sealing member 2 by the counter substrate fastening portion 32, and the waterproof performance can be improved.

[Other variations]
The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the spirit of the present invention. For example, the foamable resin that forms the resin sealing member 2 and the collar 22 may be any material that is flexible enough to roll up the collar 22 with the fingers of an operator. Can be formed.

  The vehicle ground terminal 11B may be formed on the second surface 111b. In this case, the body is grounded via the transmission member 3 that contacts the second surface 111b. The sensor mounted on the vehicle electronic control unit is not limited to the acceleration sensor 12 and may be any sensor that detects the behavior of the vehicle, such as a yaw rate sensor, a roll sensor, or a gyro sensor. However, the present invention is particularly effective for the circuit board 1 provided with the acceleration sensor 12 because of the necessity of detection accuracy, such as an airbag ECU.

  DESCRIPTION OF SYMBOLS 1: Circuit board 11: Board | substrate member 12: Acceleration sensor (behavior detection sensor) 111: Fastening part 111a: 1st surface 111b: 2nd surface 11A: Insertion hole 11B: Vehicle grounding terminal 2: Resin sealing member, 2A: through-hole for fastening, 21: through-hole forming part, 22: flange part, 23: relief part, 3: transmission member, 30: main body part, 31: fixing part, 32: board fastening part , 4: fastening member, 5: connector (male connector), 5a: opening, 6: other connector (female connector), 6A: dummy connector, 61A: relief forming part.

Claims (10)

A circuit board (1) having a board member (11) on which an electronic circuit is formed and a behavior detection sensor (12) installed on the board member to detect the behavior of a vehicle;
A transmission member (3) having a fixing part (31) fixed to the vehicle and transmitting the behavior of the vehicle to the circuit board in contact with the board member;
A fastening member (4) for contacting the circuit board and the transmission member to fasten the circuit board and the transmission member;
A connector (5) having an opening (5a) into which another connector (6) mounted on an end portion of an in-vehicle wiring connected to an external electronic circuit is installed;
A resin sealing member (2) for covering and contacting the circuit board, at least a part of the transmission member excluding the fixing part, the fastening member, and at least a part of the connector excluding at least the opening; ,
With
The resin sealing member is formed of a foamable resin, and is a flange that is integrally formed with the resin sealing member with the foamable resin and extends to cover the opening of the connector from above. (22) The vehicle electronic control unit characterized by having. The connector is installed such that the opening is located on a side surface of the resin sealing member,
The vehicular electronic control unit according to claim 1, wherein the flange portion is suspended from an upper end portion of the resin sealing member so as to cover the opening of the connector.   3. The vehicle according to claim 1, wherein an escape portion (23) having a shape following the shape of an upper surface of the other connector inserted into the opening of the connector is formed on a lower surface of the flange portion. Electronic control unit.   The vehicle electronic control unit according to any one of claims 1 to 3, wherein the behavior detection sensor is an acceleration sensor.   The vehicular electronic control unit according to any one of claims 1 to 4, wherein the fastening member is a screw member that screws the circuit board and the transmission member. The board member includes a vehicle ground terminal (11B) in the electronic circuit,
The vehicle electronic control unit according to any one of claims 1 to 5, wherein the transmission member or the fastening member is electrically connected to a body ground of the vehicle.   The vehicular electronic control unit according to claim 1, wherein the transmission member is a bracket.   The vehicle electronic control unit according to claim 5, wherein the board member is provided with an insertion hole (11A) through which a shaft portion of the screw member is inserted. A method for manufacturing the electronic control unit according to claim 1,
A fastening step of fastening the circuit board and the transmission member in a predetermined state with the fastening member;
A fitting step of fitting a dummy connector (6A) instead of the other connector to the connector;
A set step of setting the circuit board and the transmission member fastened to each other, and the connector and the dummy connector fitted to each other in a mold;
A molding step of injecting a foamable resin material into the molding die and integrally molding together with the circuit board, the transmission member, the connector, and the dummy connector to form the resin sealing member and the flange portion;
The manufacturing method of the electronic control unit for vehicles characterized by having.   The method for manufacturing an electronic control unit for a vehicle according to claim 9, wherein the dummy connector has a relief forming portion (61A) that forms the relief portion formed on a lower surface of the flange portion.

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