JP6742461B1 - Electronic control unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform an operation test of a control circuit without contacting a metal terminal of a measuring jig of a test device with a metal terminal formed on a main surface of a circuit board 11 on which an electronic component constituting a control circuit is mounted. An object is to provide an electronic control device. A plurality of metal terminals are formed on a main surface of a circuit board (11) and an electronic control device having an edge connector (13) for electrically connecting a female connector (50) to be controlled and an electronic component is provided. Of at least a part of the metal terminals of the first metal terminal that is connected to the female connector 50 and a metal terminal that is connected to the first metal terminal of a test device that tests the operation of the control circuit. And a second metal terminal connected to the metal terminal of the jig. [Selection diagram] Fig. 6

Description

The present invention relates to an electronic control device that is electrically connected to a control target using an edge connector.

Electronic control devices for motorcycles and the like are configured as shown in Patent Documents 1 and 2 below, for example.

The electronic control device disclosed in Patent Document 1 has a structure in which one end of a circuit board on which electronic components are mounted is extended and an edge connector is provided, and a portion of the circuit board on which the electronic components are mounted is resin-sealed. ing. The female connector is provided with a terminal having a spring structure, and is pressed into contact with the metal terminal of the edge connector to electrically connect the metal terminal of the female connector and the metal terminal of the edge connector.

In addition, Patent Document 2 relates to an electronic control device in which an edge connector is provided on a circuit board, and in order to suppress generation of shavings of the circuit board and suppression of plating scraping of metal terminal surfaces on the circuit board, A configuration is disclosed in which the metal terminals on the surface are stepped.

Japanese Patent No. 4478007 JP, 2016-143686, A

In the manufacturing process of the electronic control device, normal operation of the completed electronic control device cannot be obtained due to, for example, dropping of electronic components mounted on the circuit board or adhesion of conductive foreign matter to cause an electrical short circuit. Sometimes. For this reason, an operation test for confirming the operation of the control circuit formed by the electronic components is carried out with all the electronic components mounted on the circuit board. In this operation test, the electronic control device and the test device are electrically connected using the metal terminal of the edge connector to perform the test. Specifically, as the metal terminal of the measuring jig connected to the input/output signal line of the test device, the female connector is brought into contact with the metal terminal of the edge connector to electrically connect the electronic control device and the test device. doing.

Next, the above-mentioned operation test will be described with reference to the drawings. FIG. 1 is a diagram showing how the circuit board 11 of the electronic control unit 10 is inserted into a female connector 20 which is a metal terminal of the measuring jig. A plurality of control terminals 12 are formed as metal terminals on both surfaces of the circuit board 11 to form an edge connector 13. Although not shown, electronic components forming a control circuit are mounted on the main surface of the circuit board 11.

The circuit board 11 is inserted into the female connector 20 that comes into contact with and electrically connects to the plurality of control terminals 12, in the direction of the arrow shown in FIG. The female connector 20 is electrically connected to a test device (not shown) used for the operation test via an input/output signal line (not shown).

The gap between the female connectors 20 facing each other with the circuit board 11 sandwiched therebetween is designed to be narrower than the thickness of the circuit board 11, and when the circuit board 11 is inserted into the female connector 20, the circuit board 11 and the female connector 20 are separated from each other. The contact causes the female connector 20 to elastically deform in the direction in which the gap between the female connectors 20 widens, so that the female connector 20 is pressed against the circuit board 11 by the elastic restoring force, and the contact is maintained. When the insertion is further advanced, the circuit board 11 moves while maintaining the contact, the control terminal 12 and the female connector 20 contact each other, and the electronic control device 10 and the test device are electrically connected. When the operation test is completed and the circuit board 11 is pulled out, the female connector 20 is pressed against the circuit board 11 and the circuit board 11 moves while maintaining the contact. That is, when the circuit board 11 is inserted and removed, the female connector 20 moves in a state of being pressed against the surface of the edge connector 13.

FIG. 2 is a schematic perspective view of the edge connector 13 after the circuit board 11 is inserted and removed. As shown in FIG. 2, the trace 21 of movement of the female connector 20 remains on the path along which the female connector 20 moved with contact pressure when the circuit board 11 was inserted and removed. Of the movement traces 21, the movement traces 21a on the surface of the circuit board 11 are those in which the surface of the circuit board 11 has been scraped by the movement of the female connector 20 in a pressure contact state. The trace of movement 21b is the surface of the control terminal 12 that is scraped or plastically deformed.

Furthermore, the surface of the circuit board 11 and the surface of the control terminal 12 may be scraped to generate shavings, which may adhere to the vicinity of the trace 21 of movement. The shavings referred to here are shavings on the surface of the circuit board 11 or shavings on the surface of the control terminals 12.

In the operation test, the occurrence of shavings, shavings, and plastic deformation on the surface of the control terminal 12 as described above is caused when the electronic control unit 10 is electrically connected to a controlled object such as a motorcycle after the operation test. The area for contact between the control terminal 12 and the metal terminal of the female connector provided as the control target is limited, and shavings are trapped between the control terminal 12 and the metal terminal of the female connector. This causes a reduction in the contact area between the terminal 12 and the metal terminal of the female connector.

On the other hand, an operation test using the probe pin 30 as a metal terminal of the measurement jig can also be performed. FIG. 3 is a view showing a state in which the probe pin 30 is brought into pressure contact with the control terminal 12. By connecting the probe pin 30 to one end of the input/output signal line of the test device and pressing the tip of the probe pin 30 against the surface of the control terminal 12 from the vertical direction, the electronic control device 10 and the test device are electrically connected. Connected. Even in this case, the surface of the control terminal 12 is dented at the portion where the probe pin 30 is pressed, or the periphery of the control pin 12 is bulged, resulting in unevenness due to plastic deformation, so that the contact between the control terminal 12 and the metal terminal of the female connector is caused. This causes the area to decrease.

In this way, the operation test is performed by bringing the metal terminals of the measuring jig such as the female connector 20 and the probe pin 30 connected to the test device into contact with the control terminal 12, so that the control terminal caused by this contact is obtained. 12 Surface abrasion, generation of abrasion powder due to abrasion, and plastic deformation were unavoidable (hereinafter, these are collectively referred to as scratches). Furthermore, when the control terminal 12 whose surface is damaged in the operation test is used for electrical connection with the control target, the contact area between the control terminal 12 and the metal terminal of the female connector is reduced, and the contact resistance is increased. Alternatively, the contact resistance may be destabilized, and as a result, the reliability of the electrical connection between the electronic control device 10 and the controlled object may be reduced. That is, the fact that the control terminal 12 is also used in the operation test leads to a decrease in the reliability of electrical connection after the operation test.

For example, a connector mounted on the circuit board 11 as shown in FIG. 1 of Japanese Patent No. 4100331 has durability for insertion and removal of 1000 times or more. Therefore, an electronic control device using such a connector is used. Then, as described above, even if the operation test was performed by bringing the metal terminal of the measuring jig into contact with the connector, there was no concern that the reliability of the electrical connection after the operation test would decrease. However, there is a concern that the control terminal 12 of the edge connector 13 may be damaged by insertion/removal of the operation test or pressure contact, which may reduce the reliability of electrical connection.

The present invention has been made to solve such a problem, and provides an electronic control device capable of performing an operation test of a control circuit without contacting a control terminal with a metal terminal of the measurement jig. It is an object.

The electronic control device of the present invention is formed by forming a plurality of metal terminals on the main surface of a circuit board on which electronic components that constitute a control circuit are mounted, and electrically connects the female connector to be controlled and the electronic component. In the electronic control device having the edge connector, at least a part of the plurality of metal terminals is a first metal terminal connected to the female connector and a metal terminal connected to the first metal terminal. A second metal terminal connected to the metal terminal of the measuring jig of the test device for testing the operation of the circuit ,
A first metal terminal that is the first metal terminal that is provided on one surface of the circuit board, and a first metal terminal that is provided on the other surface of the circuit board. A first metal terminal on the other side is provided, and the first metal terminal on the one side and the first metal terminal on the other side face each other across the circuit board,
The second metal terminal on the one side, which is the second metal terminal connected to the first metal terminal on the one side, is a moving region of the female connector to be controlled on the surface on one side of the circuit board. And a region on one side with respect to a region on an extension line of the moving region, the region being closer to the end of the circuit board than the first metal terminal on the one side,
The second metal terminal on the other side, which is the second metal terminal connected to the first metal terminal on the other side, has the moving region and an extension of the moving region on the surface on one side of the circuit board. It is a region on the other side with respect to the region on the line and is provided in a region closer to the end portion of the circuit board than the first metal terminal on the one side, and a through hole is formed on the second metal terminal on the other side. Is formed, and the second metal terminal on the other side and the first metal terminal on the other side are connected via the through hole .

According to the present invention, it is possible to provide an electronic control device that can carry out an operation test of a control circuit without bringing the metal terminal of the measurement jig into contact with the control terminal, and the control terminal surface is scratched during the operation test. It is possible to prevent the contact area between the control terminal and the metal terminal of the female connector from being reduced due to occurrence, and improve the reliability of the electrical connection between the electronic control device and the controlled object.

It is a schematic diagram when inserting the circuit board of the conventional electronic control unit in a female connector. It is a schematic perspective view of the edge connector of the conventional electronic control unit. It is a schematic diagram when a probe pin is brought into pressure contact with a conventional electronic control unit. FIG. 3 is a schematic perspective view of the entire electronic control device according to the first embodiment of the present invention. It is a figure which shows the principal part of the AA cross section when the circuit board of the electronic control apparatus which concerns on Embodiment 1 of this invention is inserted in a female connector. FIG. 3 is a schematic perspective view of an edge connector of the electronic control device according to the first embodiment of the present invention. It is a figure which shows the principal part of the AA cross section when the circuit board of the electronic controller which concerns on Embodiment 1 of this invention is inserted in the female connector of control object. FIG. 3 is a schematic perspective view showing a moving region of a female connector to be controlled in an edge connector of the electronic control device according to the first embodiment of the present invention. FIG. 9 is an enlarged view of the inside of a dotted line portion X shown in FIG. 8 in the electronic control device according to the first embodiment of the present invention. FIG. 6 is a schematic diagram when an operation test is performed using a probe pin in the electronic control device according to the first embodiment of the present invention. It is a figure which shows the modification of the electronic control unit which concerns on Embodiment 1 of this invention. It is a figure which shows the modification of the electronic control unit which concerns on Embodiment 1 of this invention. It is a schematic perspective view of the edge connector of the electronic control device which concerns on Embodiment 2 of this invention. It is a schematic perspective view of the edge connector of the electronic control unit which concerns on Embodiment 3 of this invention. FIG. 11 is a diagram showing a main part of a BB cross section when a probe pin is pressed into contact with a through hole in the electronic control device according to the third embodiment of the present invention. It is a schematic perspective view of the edge connector of the electronic control unit which concerns on Embodiment 4 of this invention. It is a figure which shows the modification of the electronic control unit which concerns on Embodiment 4 of this invention.

Embodiment 1.
The electronic control unit 10A according to Embodiment 1 of the present invention will be described. FIG. 4 is a schematic perspective view of electronic control device 10A according to the first embodiment. The electronic control unit 10A includes, for example, a circuit board 11 on which electronic components forming a control circuit for controlling a controlled object such as a motorcycle are mounted, and a housing 14 that hermetically seals a region of the circuit board 11 on which electronic components are mounted. The edge connector 13 is a part of the circuit board 11 and protrudes from the housing 14. A control terminal 12 which is a first metal terminal and a test terminal 15 which is a second metal terminal electrically connected to the control terminal 12 are formed on both surfaces of the edge connector 13. ..

The housing 14 is composed of a hollow case. The electronic control unit 10A may have a structure in which a hollow is maintained between the housing 14 and the circuit board 11, or a structure in which the housing 14 is not hollow but is filled with resin. .. The edge connector 13 projects outside the housing 14, and a connector housing 16 is provided so as to surround the projecting portion. This connector housing 16 is intended to prevent inadvertent contact with the edge connector 13 when handling the electronic control unit 10A. Further, if the connector housing 16 is configured to be in close contact with the connector housing of the female connector, it is possible to provide a function of preventing water and dust from entering the edge connector 13 in a state where the connector housings are fitted together.

FIG. 5 shows a main part of an AA cross section when the circuit board 11 of FIG. 4 is inserted into the test female connector 40. In FIG. 4, the control terminal 12 and the test terminal 15 on one surface of the circuit board 11 are shown, but as shown in FIG. 5, the control terminal 12 and the test terminal 15 are provided on both surfaces of the circuit board 11. Is provided. The female connector 40 is electrically connected to a test device used for an operation test of the control circuit via an input/output signal line (not shown). The female connector 40 is designed so as to contact the test terminal 15 without contacting the control terminal 12 when the circuit board 11 is inserted and removed. In addition, the female connector 40 refers to all the things which insert the circuit board 11 in which the terminal 15 for a test was formed and electrically conduct.

The gap between the female connectors 40 facing each other with the circuit board 11 sandwiched therebetween is designed to be narrower than the thickness of the circuit board 11, and when the circuit board 11 is inserted into the female connector 40, the circuit board 11 and the female connector 40 are separated from each other. The contact causes the female connector 40 to elastically deform in a direction in which the gap between the female connectors 40 widens, so that the female connector 40 is pressed against the circuit board 11 by the elastic restoring force, and the contact is maintained. When the insertion is further advanced, the circuit board 11 moves while maintaining the contact, the test terminal 15 and the female connector 40 make contact, and the electronic control unit 10A and the test unit are electrically connected. When the operation test is completed and the circuit board 11 is pulled out, the female connector 40 is pressed against the circuit board 11, and the circuit board 11 moves while maintaining the contact. That is, when the circuit board 11 is inserted/removed, the female connector 40 moves while being pressed against the surface of the edge connector 13. The female connector 40 does not come into contact with the control terminal 12 when the circuit board 11 is inserted or removed.

FIG. 6 is a schematic perspective view of the edge connector 13 in the electronic control unit 10A after the circuit board 11 is inserted and removed in the operation test of the control circuit. After the circuit board 11 is inserted/removed in the operation test, a movement mark 41 is formed on the surface of the test terminal 15, but there is no movement mark on the surface of the control terminal 12.

FIG. 7 shows a main part of the AA cross section when the circuit board 11 of FIG. 4 is inserted into the female connector 50 to be controlled. Although not shown, the female connector 50 is electrically connected to the controlled object via the wire 51. The female connector 50 is provided with a connector housing 52 so as to be fitted with the connector housing 16 of the electronic control unit 10A when the insertion of the circuit board 11 is completed. Further, in order to prevent water and dust from entering the circuit board 11, the connector housing 52 is provided with a waterproof seal rubber 53.

The gap between the metal terminals 54 facing each other with the circuit board 11 sandwiched therebetween is designed to be narrower than the thickness of the circuit board 11, and when the circuit board 11 is inserted into the female connector 50, the gap between the circuit board 11 and the metal terminals 54 is reduced. Since the metal terminals 54 elastically deform in the direction in which the gap between the metal terminals 54 widens due to the contact, the metal terminals 54 are pressed against the circuit board 11 by the elastic restoring force, and the contact is maintained. When the insertion is further advanced, the metal terminal 54 moves while maintaining the contact, and the control terminal 12 and the metal terminal 54 come into contact with each other, so that the electronic control unit 10A and the controlled object are electrically connected. Even when the circuit board 11 is pulled out, the metal terminals 54 are pressed against the circuit board 11 and move while maintaining contact. That is, when the circuit board 11 is inserted and removed, the metal terminals 54 move while being pressed against the surface of the edge connector 13. The metal terminal 54 and the test terminal 15 do not come into contact with each other when the circuit board 11 is inserted or removed.

FIG. 8 is a schematic perspective view of the edge connector 13 showing the moving region 55 of the metal terminal 54 of the female connector 50. The movement mark 41 is not shown in the figure because the emphasis is placed on improving the visibility in FIG. The metal terminal 54 of the female connector 50 moves in the movement area 55 to the position when the insertion of the circuit board 11 is completed. The metal terminal 54 moves in a state where this moving area 55 on the surface of the edge connector 13 is pressed. Even when the circuit board 11 is pulled out, the metal terminal 54 moves in a state where the moving area 55 is in pressure contact, as in the case of insertion.

As described above, in the electronic control unit 10A according to the first embodiment, the female connector 40 contacts only the test terminal 15 and does not contact the control terminal 12. On the other hand, the metal terminal 54 of the female connector 50 to be controlled does not contact the test terminal 15 but only the control terminal 12. As a result of the above-described configuration, the operation test of the control circuit can be performed without contacting the female connector 40 with the control terminal 12, so that the control terminal 12 and the metal terminal are damaged due to the surface of the control terminal 12 being damaged. The contact area of 54 can be prevented from decreasing, and the reliability of the electrical connection between the electronic control unit 10A and the controlled object can be improved.

As shown in FIG. 8, it is preferable that the test terminal 15 is formed on a region other than the moving region 55 and the extension line of the moving region 55. The reason why the above configuration is desirable will be described. If the test terminal 15 is formed in the moving area 55, the shavings on the surface of the circuit board 11 and the shavings on the surface of the test terminal 15 generated when the circuit board 11 is inserted and removed in the operation test adhere to the moving area 55. It will be easier. When the circuit board 11 is inserted into the female connector 50 with the shavings adhering to the moving area 55, the shavings are sandwiched between the control terminal 12 and the metal terminal 54 of the female connector 50, and a normal electrical connection is obtained. There is a risk that you will not be able to.

Further, if the test terminal 15 is formed on the extension line of the moving region 55, the female connector 40 moves on the surface of the control terminal 12 when the circuit board 11 is inserted into the female connector 40 in the operation test, and thus the control terminal 12 is controlled. The surface of the terminal 12 may be scratched.

Therefore, by forming the test terminal 15 on a region other than the moving region 55 of the female connector 50 and an extension line of the moving region 55, the shavings generated by inserting and removing the circuit board 11 during the operation test are attached to the moving region 55. This makes it possible to prevent the female connector 40 from moving on the surface of the control terminal 12.

Furthermore, as shown in FIG. 8, at least a part of the test terminal 15 is located closer to the end side of the circuit board 11 than the control terminal 12 where the plurality of control terminals 12 are formed. It is desirable to form the test terminals 15 so as to be located. The reason why the above configuration is desirable will be described below.

Generally, a parasitic capacitance exists between two adjacent wiring patterns. The magnitude of the parasitic capacitance is inversely proportional to the adjacent distance between the wiring patterns and is proportional to the area of the opposing conductors. Since the metal terminal formed on the circuit board 11 has a constant thickness, the longer the portion facing the adjacent metal terminal, the larger the parasitic capacitance. The higher the frequency of the signal input to the control circuit via the metal terminal or the signal output from the control circuit via the metal terminal, the more the parasitic capacitance may affect the operation of the control circuit.

FIG. 9 is an enlarged view of the dotted line portion X shown in FIG. In the electronic control unit 10A, even if there is a sufficient adjacent distance between the control terminals 12, when the test terminals 15 are formed between the control terminals 12, the control terminals 12 and the test terminals 15 are adjacent to each other. Since the distance D is short, the parasitic capacitance may become a size that cannot be ignored.

Therefore, as shown in FIGS. 8 and 9, at least a part of the test terminal 15 is closer to the end side of the end of the circuit board 11 where the plurality of control terminals 12 are formed than the control terminal 12. By arranging so as to be located at, it is possible to shorten the facing portion L of the test terminal 15 that is the adjacent distance D, and reduce the parasitic capacitance, so that the parasitic capacitance affects the operation of the control circuit. The influence given can be reduced.

Although the operation test using the female connector 40 as the metal terminal of the measurement jig has been described, the probe pin 30 can be connected to the test device instead of the female connector 40 and used for the operation test. FIG. 10 is a schematic diagram when an operation test is performed using the probe pin 30. In FIG. 10, the operation test is performed by pressing the tip of the probe pin 30 vertically against the surface of the test terminal 15. After the operation test, the surface of the test terminal 15 is plastically deformed by the pressure contact of the probe pin 30. When the circuit board 11 is inserted into the female connector 50 to be controlled, the metal terminal 54 is brought into contact with the control terminal 12 without being brought into contact with the test terminal 15, thereby electrically connecting the electronic control unit 10A to the controlled object. The reliability of can be improved. Although FIG. 10 shows a state in which the tip of the probe pin 30 is pressed and contacted so as to be perpendicular to the surface of the test terminal 15, the tip of the probe pin 30 is oblique to the surface of the test terminal 15. You may press it like this. Furthermore, the movement direction of the probe pin 30 or the electronic control unit 10A when the tip of the probe pin 30 is pressed against the surface of the test terminal 15 may be a direction other than the vertical direction.

FIG. 11 is a diagram showing a modification of the electronic control unit 10A when the probe pin 30 is used in the operation test. When the probe pin 30 is used in the operation test, the test terminal 15 may be formed closer to the region where the electronic component is mounted than the control terminal 12, as shown in FIG. This makes it possible to reduce the distance between the control terminal 12 and the end where the plurality of control terminals 12 are formed among the end portions of the circuit board 11, and the electronic control device 10A. Can be miniaturized.

FIG. 12 is a diagram showing a modified example of the housing 14 of the electronic control unit 10A. A structure other than the edge connector 13 of the circuit board 11 may be sealed by transfer molding, and the transfer molding portion 14a can be used as a housing.

Embodiment 2.
An electronic control unit 10B according to Embodiment 2 of the present invention will be described. FIG. 13 is a schematic perspective view of the edge connector 13 of the electronic control unit 10B according to the second embodiment. In the first embodiment, the control terminal 12 and the test terminal 15 are formed on the same surface of the circuit board 11, whereas in the second embodiment, the control terminal 12 is formed on both surfaces of the circuit board 11, and The difference is that the test terminals 15 are formed only on one surface of both surfaces of the circuit board 11. Hereinafter, the surface on which the control terminals 12A shown by the solid line are formed is one surface, and the surface on which the control terminals 12B are shown by the broken line is the other surface. The area of the circuit board 11 on which electronic components are mounted and the housing 14 have the same configuration as that of the first embodiment, and are not shown.

The test terminal 15A corresponding to the control terminal 12A and the test terminal 15B corresponding to the control terminal 12B are formed on only one surface. The control terminal 12B and the test terminal 15B are electrically connected by the through hole 17B. The through hole 17B is a technique generally used for the circuit board 11, and is formed by forming a through hole in the circuit board 11 and performing metal plating such as copper plating on the side wall of the through hole. Further, the through hole 17B is provided so that its opening is located in the region of the pad 18 formed on the test terminal 15B. The pad 18 is formed by extending the metal plating on the side wall of the through hole of the through hole 17B on the surface of the circuit board 11, and refers to a portion to be brought into contact with the metal terminal of the measurement jig.

With the above-described configuration, the contact area between the control terminals 12A and 12B and the metal terminal 54 can be prevented from decreasing due to scratches on the surfaces of the control terminals 12A and 12B, as in the first embodiment. The reliability of the electrical connection between the control device 10B and the controlled object can be improved.

Further, in the second embodiment, all of the test terminals 15A and 15B used for the operation test are formed only on one surface of the circuit board 11, so that when the operation test is performed using the probe pin 30, An operation test can be performed by pressing the probe pin 30 against the test terminals 15A and 15B from one direction. As a result, the mechanism for press-contacting the probe pin 30 of the test apparatus can be simplified as compared with the case where the probe pin 30 is press-contacted to both surfaces of the circuit board 11.

Further, the opening of the through hole 17B is formed so as to be located in the region of the pad 18 of the test terminal 15B. Even if the opening of the through hole 17B is formed outside the region of the pad 18, if the through hole 17B and the test terminal 15B are electrically connected, the test terminal 15B is used for operation. Although there is no problem in conducting the test, it is possible to suppress an increase in the area of the circuit board 11 associated with the addition of the test terminal 15A or 15B when the opening of the through hole 17B is located in the area of the pad 18. There are advantages.

In the second embodiment, the example in which the control terminals are formed on both surfaces of the circuit board has been shown, but the present invention is not limited to this, and the control terminals are formed only on one surface of the circuit board and the test terminals are formed on the other surface. The terminals may be formed and the test terminals corresponding to the control terminals may be electrically connected via the through holes.

Embodiment 3.
An electronic control unit 10C according to Embodiment 3 of the present invention will be described. FIG. 14 is a schematic perspective view of the edge connector 13 of the electronic control unit 10C according to the third embodiment. In the electronic control unit 10B according to the second embodiment, there is no through hole electrically connected to the test terminal 15A formed on one surface of the circuit board 11, but the electronic control according to the third embodiment is performed. In the device 10C, a through hole 17A is formed so as to be electrically connected to the test terminal 15A formed on one surface of the circuit board 11 and to open in the region of the pad 18 of the test terminal 15A. The difference is. The area of the circuit board 11 on which electronic components are mounted and the housing 14 have the same configuration as in the first and second embodiments, and are not shown.

With the above-described configuration, the contact area between the control terminals 12A and 12B and the metal terminal 54 is prevented from decreasing due to scratches on the surfaces of the control terminals 12A and 12B, as in the first and second embodiments. The reliability of the electrical connection between the electronic control unit 10C and the controlled object can be improved.

Next, a test example in which the probe pin 30 is brought into pressure contact with the through holes 17A and 17B to perform an operation test will be described. FIG. 15 is a view showing a state in which the probe pin 30 is pressed against the through hole 17A in the BB cross section of FIG. The contact point of the probe pin 30 is the through hole 17A, and the tip of the probe pin 30 is conical or hemispherical, so that the tip of the probe pin 30 is pressed into contact with the through hole 17A and the probe pin 30 Since the tip is not displaced from the opening of the through hole 17A and a stable contact state is obtained, highly accurate measurement can be performed in the operation test. FIG. 15 shows an example in which the tip of the probe pin 30 is pressure-contacted so as to be perpendicular to the surface of the test terminal 15A. However, if the tip of the probe pin 30 is pressed into the through hole 17A, it can be pressure-contacted. Alternatively, the tip of the probe pin 30 may be pressed against the surface of the test terminal 15A so as to be inclined. Although only the through hole 17A is shown in FIG. 15, the same applies to the through hole 17B.

Fourth Embodiment
An electronic control unit 10D according to Embodiment 4 of the present invention will be described. FIG. 16 is a schematic perspective view of the edge connector 13 of the electronic control unit 10D according to the fourth embodiment. As shown in FIG. 16, the through holes 17A and 17B are used as test terminals. The area of the circuit board 11 on which the electronic components are mounted and the housing 14 have the same configuration as in the first to third embodiments, and are not shown.

With the above-described configuration, similarly to the first to third embodiments, it is possible to prevent a reduction in the contact area between the control terminals 12A and 12B and the metal terminal 54 due to scratches on the surfaces of the control terminals 12A and 12B. The reliability of the electrical connection between the electronic control unit 10D and the controlled object can be improved. Furthermore, the increase in the area of the circuit board 11 due to the formation of the test terminals can be suppressed, and the electronic control device 10D can be downsized.

FIG. 17 is a diagram showing a modification of the electronic control unit 10D according to the fourth embodiment. When the insertion of the circuit board 11 is completed, the positions of the control terminals 12A and 12B are determined so as to come into contact with the metal terminals 54, and the control terminals 12A and 12B are formed on both surfaces of the circuit board 11. As a result, between the control terminals 12A and 12B. Through holes 17A and 17B may be formed between the control terminals 12A and 12B as shown in FIG. 17, for example, as long as there is a sufficient space between them and there is no fear of a short circuit due to adhesion of conductive foreign matter. As a result, the size of the electronic control unit 10D in the insertion direction of the circuit board 11 can be reduced.

The control terminals 12A, 12B and the corresponding test terminals 15A, 15B are on different surfaces of the circuit board 11, and as means for electrically connecting them, in the above-described second and third embodiments, the through holes 17A, Although the example in which 17B is formed has been described, any technology other than the through holes 17A and 17B may be used as long as the technology electrically connects the different surfaces. The through holes 17A and 17B are a general technique as means for electrically connecting the different surfaces and can be easily formed, so that the manufacturing efficiency is good.

In the first to fourth embodiments, an example in which the test terminals 15A and 15B are formed and electrically connected to all of the control terminals 12, 12A and 12B is illustrated. For the control terminals 12, 12A, 12B that do not require electrical connection to the test apparatus, the test terminals 15A, 15B may not be formed.

In the present invention, it is possible to appropriately combine the embodiments and appropriately modify or omit the embodiments within the scope of the invention.

10, 10A, 10B, 10C, 10D Electronic control device 11 Circuit board 12, 12A, 12B Control terminal 13 Edge connector 14 Housing 14a Transfer mold part 15, 15A, 15B Test terminal 16 Connector housing 17A, 17B Through hole 18 Pad 20 Test female connector 21 Movement trace 21a Circuit board 11 surface movement trace 21b Control terminal 12 surface movement trace 30 Probe pin 40 Test female connector 41 Movement trace 50 Control target female connector 51 Wire 52 Connector housing 53 Seal Rubber 54 Metal Terminal 55 of Female Connector 50 Moving Area

Claims (3)

An electronic control having a plurality of metal terminals formed on a main surface of a circuit board on which electronic components constituting a control circuit are mounted, and having an edge connector for electrically connecting a female connector to be controlled and the electronic component. In the device,
At least a part of the plurality of metal terminals is
A first metal terminal connected to the female connector,
A second metal terminal connected to the first metal terminal, the second metal terminal being connected to the metal terminal of a measuring jig of a test apparatus for testing the operation of the control circuit;
It is constituted by,
A first metal terminal that is the first metal terminal that is provided on one surface of the circuit board, and a first metal terminal that is provided on the other surface of the circuit board. A first metal terminal on the other side is provided, and the first metal terminal on the one side and the first metal terminal on the other side face each other across the circuit board,
The second metal terminal on the one side, which is the second metal terminal connected to the first metal terminal on the one side, is a moving region of the female connector to be controlled on the surface on one side of the circuit board. And a region on one side with respect to a region on an extension line of the moving region, the region being closer to the end of the circuit board than the first metal terminal on the one side,
The second metal terminal on the other side, which is the second metal terminal connected to the first metal terminal on the other side, has the moving region and an extension of the moving region on the surface on one side of the circuit board. It is a region on the other side with respect to the region on the line and is provided in a region on the end side of the circuit board with respect to the first metal terminal on the one side, and a through hole is formed on the second metal terminal on the other side. Is formed, and the second metal terminal on the other side and the first metal terminal on the other side are connected via the through hole . The electronic control device according to claim 1, wherein a through hole is formed in the second metal terminal on the one side. An electronic control having a plurality of metal terminals formed on a main surface of a circuit board on which electronic components constituting a control circuit are mounted, and having an edge connector for electrically connecting a female connector to be controlled and the electronic component. In the device,
At least a part of the plurality of metal terminals is
A first metal terminal connected to the female connector,
A second metal terminal connected to the first metal terminal, the second metal terminal being connected to the metal terminal of a measurement jig of a test apparatus that tests the operation of the control circuit;
Consists of
A first metal terminal that is the first metal terminal that is provided on one surface of the circuit board, and a first metal terminal that is provided on the other surface of the circuit board. A first metal terminal on the other side is provided, and the first metal terminal on the one side and the first metal terminal on the other side face each other across the circuit board,
The second metal terminal on the one side, which is the second metal terminal connected to the first metal terminal on the one side, is a moving region of the female connector to be controlled on the surface on one side of the circuit board. And a region provided on one side with respect to a region on the extension line of the moving region, and a through hole is formed in the second metal terminal on the one side,
The second metal terminal on the other side, which is the second metal terminal connected to the first metal terminal on the other side, has the moving region and an extension of the moving region on the surface on one side of the circuit board. The through hole is provided in a region on one side of the line region and does not overlap with the second metal terminal on the one side, and a through hole is formed in the second metal terminal on the other side. An electronic control device in which the second metal terminal on the other side and the first metal terminal on the other side are connected via a hole.

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