JP2007227526A - Electronic circuit unit, and relay terminal for electronic circuit unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic circuit unit where soldering of lead wires for connecting a relay terminal connected to a circuit board and the circuit board to an outer circuit can easily and securely be performed. <P>SOLUTION: The relay terminal 11 is arranged which integrally has a substrate 11a, an erected plate 11b erected from one end of the substrate 11a, an inclined plate 11c extending in a direction inclined to the erected plate from an end opposite to the substrate in the erected plate, a lead wire holding plate 11d extending in a direction making an angle with respect to the inclined plate from an end opposite to the erected plate in the inclined plate 11c, and an end plate 11e extending in a direction making the angle with respect to the lead wire holding plate 11d. The substrate 11a of the relay terminal is soldered to a land of the circuit board 10. A male connector 14 connected to a core wire of the lead line 13 is engaged with a through-hole 11f of the lead wire holding plate of the relay terminal in terms of snapping, and the connector 14 is soldered to a periphery of the through-hole 11f. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electronic circuit unit in which electronic components necessary for constituting a predetermined circuit are mounted on a circuit board, and a relay terminal suitable for use in the electronic circuit unit.

  In an electronic circuit unit in which electronic components necessary for constituting a predetermined circuit are mounted on a circuit board, when connecting the circuit board to an external circuit through a lead wire, a relay terminal is connected to a land provided on the circuit board. Surface mounting is performed, and a lead wire is soldered to the relay terminal. When a plurality of lead wires for connecting the circuit board to an external circuit are provided, the plurality of lead wires are collected and pulled out as a wire harness.

  As a relay terminal used in this type of electronic circuit unit, there is one in which a conductive plate is formed in a Z shape as shown in Non-Patent Document 1. FIG. 5 shows the relay terminal 1 shown in Non-Patent Document 1. The relay terminal includes a flat board portion 1a, and an inclined plate portion 1b rising obliquely from one end of the substrate portion 1a. A land 3 having an end plate portion 1c that is folded back from an end opposite to the substrate portion of the inclined plate portion 1b and extends in parallel with the substrate portion 1a, and the substrate portion 1a is provided on the circuit board 2. Are mounted by solder 4 and surface-mounted. When the relay terminal is mounted on the circuit board, the outer surface of the end plate portion 1c of the relay terminal is used as a sucked surface, and the sucked surface is sucked by the vacuum sucking tool of the component mounter to hold the relay terminal. Then transport it to a predetermined land position.

  8A and 8B show an example of an electronic circuit unit to which the relay terminal shown in FIG. 5 is applied. In FIG. 8, 5 is a circuit in which a large number of electronic components 6 are surface-mounted. It is a substrate. In the illustrated example, in order to draw out the plurality of lead wires 7, 7,... From the circuit board 5, the board portions 1a, 1a,. Are soldered, and the core wires 7a, 7a, ... of the lead wires 7, 7, ... are soldered to the end plate portions 1c, 1c, ... of these relay terminals.

As shown in FIG. 5, the relay terminal formed in a Z shape can be deformed, and the height of the relay terminal can be appropriately changed according to the situation of the surrounding component arrangement. The relay terminals having the same dimensions can be used for circuit boards having various component arrangements. Therefore, if such a relay terminal is used, it is possible to standardize the relay terminal for an electronic circuit unit having various component arrangements, thereby reducing costs.
Japan Society for Invention and Innovation Technical Report (Public Technical Number 2005-500550)

  The relay terminal shown in FIG. 5 does not include means for positioning and temporarily fixing the core wire 7a when soldering the core wire 7a of the lead wire 7 to the end plate portion 1c. When connecting the cables, it was necessary to manually perform the work of positioning the lead wires of each lead wire, and the work efficiency was poor. Further, when soldering is performed while positioning the lead wire manually, the quality of the soldered portion of the lead wire is likely to vary depending on the skill level of the operator, so there is a concern about reliability.

  In order to facilitate the soldering of the lead wires, it is conceivable to provide holes for inserting and positioning the lead wires into the end plate of the relay terminal. When a hole is provided in the relay terminal, the relay terminal cannot be sucked and held by the suction tool of the component mounter when the relay terminal is surface-mounted on the circuit board. Therefore, a hole for inserting a lead wire cannot be provided in the end plate portion of the relay terminal.

  The conventional relay terminal shown in FIG. 5 has a function of relieving stress generated at the junction between the relay terminal and the land when an external force is applied to the lead wire because it is relatively easily deformed. As shown in FIG. 6, the stress relaxation function is not as expected, and it becomes clear that when the pulling force F acts on the lead wire 7, the junction between the relay terminal and the land may peel off. It was. Further, when the relay terminal 7 is molded with resin together with other electronic components, the height direction of the relay terminal 7 is increased as shown in FIG. 7 due to expansion and contraction of the mold resin caused by heat generation and cooling of the electronic component. Even when the force F ′ is applied, the junction between the relay terminal and the land may be peeled off.

  An object of the present invention is to provide a lead wire to a relay terminal in an electronic circuit unit in which a lead wire is soldered to a relay terminal mounted on a circuit board together with an electronic component, and the circuit board is connected to an external circuit through the lead wire. The connection of the relay terminal and the land is less likely to peel off when an external force is applied to the relay terminal, and the reliability of the lead wire lead-out portion is improved. It is in.

  The present invention includes a circuit board on which electronic components necessary for constituting a predetermined circuit are mounted, and a relay terminal surface-mounted on the circuit board, and a lead wire for connecting the circuit board to an external circuit is provided. The target is an electronic circuit unit soldered to a relay terminal.

  In the present invention, the relay terminal is formed by bending a conductive plate material that can be bent and has elasticity, and includes a board portion soldered to a land of a circuit board, and one end of the board portion. Inclined plate that has an obtuse angle formed between the standing upright plate portion and the upright plate portion extending from the end of the upright plate portion opposite to the substrate portion in a direction inclined with respect to the upright plate portion. A lead wire holding plate portion extending in an angle with respect to the inclined plate portion from an end portion of the inclined plate portion opposite to the standing plate portion, and an end of the lead wire holding plate portion opposite to the inclined plate portion A plate-like end plate portion that extends in a direction that forms an angle with respect to the lead wire holding plate portion from the portion and that has a plate surface that obliquely opposes the plate surface of the inclined plate portion.

  Also, a lead-like claw portion in which a through hole is formed through the lead wire holding plate portion of the relay terminal in the thickness direction, a part of the inclined plate portion is cut and raised, and the tip faces the lead wire holding plate portion side. The lead wire insertion hole is formed after the claw portion is cut and raised. Then, the male connector connected to the lead wire core wire is press-fitted into the through hole of the relay terminal, or is repelledly fitted, and the connector is soldered to the periphery of the through hole. ing.

  If comprised as mentioned above, between the board | substrate part and end plate part of a relay terminal, the bending part between an upright part and an inclination part, and the bending part between an inclination part and a lead wire holding | maintenance board part. Since there are two bent portions, the relay terminal can be easily deformed. Therefore, the stress generated at the junction between the relay terminal and the land of the circuit board when an external force is applied to the relay terminal can be further reduced compared to the case where the conventional relay terminal is used, and the tension acts on the lead wire. In this case, or when the resin mold part for molding the relay terminal expands and contracts, the possibility that the relay terminal peels from the land of the circuit board can be reduced.

  As described above, a male connector is connected to the lead wire core, and the connector is press-fitted into the through hole of the lead wire holding plate portion of the relay terminal, or elastically repelled into the through hole. If the connector is soldered to the lead wire holding plate part in the fitted state, the soldering operation can be performed in a state where the portion to be soldered is fixed, so it depends on the skill level of the operator. Therefore, the soldering operation for connecting the lead wire to the relay terminal can be performed easily and reliably.

  In the above configuration, a connector is connected to the core of the lead wire, and the connector is press-fitted or elastically fitted into the through hole of the lead wire holding plate portion of the relay terminal to hold the connector in the lead wire. Although it was made to solder to a board part, it can also comprise so that the core wire of a lead wire may be soldered directly to a relay terminal. In this case, the tip of the lead wire core is inserted into the lead wire insertion hole from the outside of the relay terminal through the through hole, and the tip of the claw is engaged with the lead wire core. A portion of the lead wire core wire located outside the relay terminal is placed along the outer surface of the end plate portion and soldered to the end plate portion.

  As described above, when the tip of the lead wire core is inserted into the lead wire insertion hole through the through hole from the outside of the relay terminal and the tip of the claw is engaged with the lead wire core lead, Since the core of the wire can be temporarily fixed to the relay terminal, the work of soldering the core of the lead wire to the end plate portion of the relay terminal can be facilitated.

  The present invention is also applied to a relay terminal for an electronic circuit unit that is surface-mounted on a circuit board in order to connect a lead wire to the circuit board on which electronic components necessary for constituting a predetermined circuit are mounted.

  The relay terminal according to the present invention is formed by bending a conductive plate material that can be bent and has elasticity, and includes a board portion soldered to a land provided on a circuit board, An internal angle formed between the upright plate portion that stands upright from one end and the upright plate portion that extends from the opposite end of the upright plate portion to the upright plate portion in an inclined direction with respect to the upright plate portion. The inner angle formed between the inclined plate portion and the inclined plate portion extending in a direction perpendicular to the plate surface of the substrate portion from the opposite end portion of the inclined plate portion to the upright plate portion is an obtuse angle. The lead wire holding plate portion and the end of the lead wire holding plate portion opposite to the inclined plate portion extend in a direction perpendicular to the lead wire holding plate portion, and the plate surface is the plate surface of the inclined plate portion. It integrally has a flat plate-like end plate portion that faces diagonally. A through hole is formed through the lead wire holding plate portion in the thickness direction, a part of the inclined plate portion is cut and raised, and a lead-like claw portion with the tip facing the lead wire holding plate portion side is formed. In addition, a lead wire insertion hole is formed after the claw portion is cut and raised.

  When the relay terminal is configured as described above, it is easily deformed when subjected to an external force to relieve the stress, so that the junction with the land of the circuit board can be prevented from being peeled off, and the lead wire connecting portion Can improve the reliability. Further, when the relay terminal is configured as described above, the connector connected to the lead wire core wire is press-fitted or elastically fitted into the through hole of the lead wire holding plate portion and held, or the lead wire core is held. The lead wire core wire is temporarily connected to the relay terminal by inserting the wire into the lead hole holding plate portion through hole and the inclined plate portion lead wire insertion hole and engaging the claw portion with the lead wire core wire. Since it can fix, the soldering operation | work of the core wire of a lead wire and a relay terminal can be made easy.

  As described above, according to the present invention, as a relay terminal for connecting a lead wire for connecting a circuit board to an external circuit, the board part soldered to the land of the circuit board and the one end of the board part are raised. The inner angle formed between the standing plate portion and the standing plate portion extending in an inclined direction with respect to the standing plate portion from the opposite end portion of the standing plate portion to the substrate portion is an obtuse angle. A plate portion, a lead wire holding plate portion extending in an angle with respect to the inclined plate portion from an end portion on the opposite side of the standing plate portion of the inclined plate portion, and an opposite side of the inclined plate portion of the lead wire holding plate portion Use a lead that extends from the end in a direction that forms an angle with respect to the lead wire holding plate, and that has a flat plate-like end plate that is diagonally opposed to the plate surface of the inclined plate. Press the connector connected to the core of the wire into the through hole in the lead wire holding plate of the relay terminal or The connector is soldered to the lead wire holding plate in a state of being fitted and held, or the lead wire core wire is connected to the through hole of the lead wire holding plate and the lead wire insertion hole of the inclined plate. By inserting and engaging the claw part with the lead wire core wire, the lead wire core wire is soldered to the single plate portion of the relay terminal while the lead wire core wire is temporarily fixed to the relay terminal. As a result, the soldering operation for connecting the lead wire and the relay terminal can be performed easily and reliably, and the reliability of the lead wire lead-out portion can be improved.

  According to the present invention, between the substrate portion and the end plate portion of the relay terminal, the bent portion between the standing portion and the inclined portion, and the bent portion between the inclined portion and the lead wire holding plate portion. Because there are bent parts, the relay terminal can be easily deformed, and the stress generated at the junction between the relay terminal and the land of the circuit board when an external force is applied to the relay terminal is used with the conventional relay terminal. When the tension acts on the lead wire, or when the resin mold part that molds the relay terminal expands and contracts, the possibility that the relay terminal peels from the land of the circuit board is reduced. The reliability of the lead wire lead portion can be increased.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
1A to 1E show a relay terminal used in an embodiment of the present invention together with a part of a circuit board. FIG. 1A is a front view, FIG. 1B is a right side view, and FIG. And (D) are a plan view and a bottom view of the relay terminal, respectively, and (E) is a sectional view taken along line EE of (B).

  1A to 1E, reference numeral 10 denotes a circuit board that also serves as a heat sink. The circuit board includes a metal substrate 10a made of a metal having good thermal conductivity, and an insulating layer formed on the metal substrate 10a. 10b and a land 10c formed on the insulating layer 10b.

  A relay terminal 11 is surface-mounted on the circuit board 10 together with electronic components (not shown in FIG. 1) constituting a predetermined circuit. The relay terminal 11 is formed by bending a substantially rectangular plate made of a conductive material that can be bent and is elastic, such as copper or aluminum, and is soldered to the land 10c of the circuit board 10. The rectangular substrate portion 11a, the upright plate portion 11b that stands upright from one end of the substrate portion 11a, and the end portion of the upright plate portion 11b opposite to the substrate portion 11a from the upright plate portion 11b to the upright plate portion 11b side. An inclined plate portion 11c extending in a direction inclined to the upright plate portion 11a and having an obtuse angle α formed between the upright plate portion 11a and an inclined plate portion from the end of the inclined plate portion 11c opposite to the upright plate portion 11b. The lead wire holding plate portion 11d that extends in a direction that forms an angle with respect to 11c (in the illustrated example, a direction that is perpendicular to the substrate portion 11a) and that has an internal angle β formed between the inclined plate portion 11c and an obtuse angle. Lead wire The holding plate portion 11d extends from the end opposite to the inclined plate portion 11c in a direction forming an angle with respect to the lead wire holding plate portion 11d (in the illustrated example, a direction perpendicular to the lead wire holding plate portion 11d). Thus, the plate surface integrally has a flat end plate portion 11e that obliquely opposes the plate surface of the inclined plate portion 11c.

  The lead wire holding plate portion 11d of the relay terminal 11 is formed with a through hole 11f penetrating the holding plate portion in the thickness direction. Further, a part of the inclined plate portion 11c is cut and raised to form a lead-like claw portion 11g whose tip faces the lead wire holding plate portion 11d side, and the lead wire is inserted after the claw portion 11g is cut and raised. A hole 11h (see FIGS. 1B and 1E) is formed. In the illustrated example, the corners at both ends of the other end of the substrate portion 11a (the end opposite to the upright plate portion 11b) are dropped to form the chamfered portions 11a1 and 11a1, and the lead wire holding plate portion of the end plate portion 11e. The corners at both ends of the end opposite to 11d are dropped to form chamfered portions 11e1 and 11e1. In the illustrated example, a hole 11 i is formed by penetrating the substrate of the relay terminal 11.

  In the illustrated relay terminal 11, the outer surface of the end plate portion 11 e is an attracted surface 11 e 2 that is attracted by the vacuum suction tool of the mounter. When the relay terminal 11 is mounted on the circuit board, the suction surface 11e2 is sucked by a vacuum suction tool of a mounter (not shown) to hold the relay terminal 11 and transport it onto a predetermined land 10c provided on the circuit board. Then, the substrate portion 11 a is soldered to the land 10 c with the solder 12.

  Soldering of the mounted component including the relay terminal to the land is performed by an appropriate method, for example, the circuit board is carried into the furnace together with the mounted component with the mounted component mounted on the land via reflow solder. Soldering by melting the solder by soldering and soldering the soldered part by passing the circuit board through the flow solder bath with the mounted component temporarily fixed to the land with adhesive. This is done by the flow soldering method.

  If the hole 11i is provided in the board portion 11a of the relay terminal 11 as shown in the example, a part of the solder 12 enters the hole 11i, so that the bonding strength between the relay terminal and the land 10c can be increased. it can.

  In the present embodiment, a male connector 14 as shown in FIG. 2A is connected to the lead wire 13 connected to the relay terminal 11. The male connector shown in the figure includes a tubular portion 14a, a tapered portion 14b that is provided so as to be continuous with the rear end portion of the tubular portion 14a, and has a diameter that increases as the distance from the tubular portion 14a increases. A bend portion 14c provided to be adjacent to the end portion on the maximum diameter portion side of the portion 14b and formed to have an outer diameter smaller than the outer diameter of the maximum diameter portion of the taper portion 14b; A cylindrical head portion 14d that is provided so as to be continuous with an end portion on the opposite side to the tapered portion 14b of 14c and has a diameter larger than that of the rounded portion 14c is integrally provided. A hole 14e into which the core wire 13a of the lead wire 13 can be inserted is formed in the axial center portion of the relay terminal 11, and a part of the peripheral wall portion of the head portion 14d is cut away to form a pair of pressing pieces 14d1, 14d1. Is formed. The illustrated relay terminal 14 is coupled to the end of the lead wire 13 with the tip of the core wire 13a of the lead wire 13 received in the hole 14e and the insulation coating 13b of the lead wire 13 received inside the head portion 14d. The tubular portion 14a is connected to the core wire 13a by being crimped with respect to the core wire 13a, and the pair of pressing pieces 14d1, 14d1 holds the insulation coating of the lead wire 13 on the side of the insulation coating. Is fixed to the lead wire 13 by crimping.

  In the illustrated connector 14, the outer diameter of the maximum diameter portion of the tapered portion 14b is set slightly larger than the inner diameter of the through hole 11f of the relay terminal 11, and the outer diameter of the bent portion 14c is substantially equal to the inner diameter of the through hole 11f. They are set to be equal and are elastically fitted and held in the through hole 11f of the relay terminal 11.

  In the state where the connector 14 is temporarily fixed to the relay terminal 11 as described above, the molten solder 15 is supplied to the fitting portion between the connector 14 and the through hole 11f, so that the connector 14 is placed around the through hole 11f. The lead wire 13 is connected to the relay terminal 11 by soldering.

  Thus, in this embodiment, in a state where the connector 14 connected to the core wire of the lead wire 13 is elastically fitted and held in the through hole 11f of the lead wire holding plate portion 11d of the relay terminal 11. Since the connector 14 is soldered to the lead wire holding plate portion 11d, the soldering operation can be performed in a state where the portion to be soldered is fixed. Therefore, the soldering operation for connecting the lead wire to the relay terminal can be easily and reliably performed without depending on the skill level of the worker performing the soldering.

  When the relay terminal 11 is configured as described above, the bent portion R1 between the standing portion 11b and the inclined portion 11c, the inclined portion 11c, and the lead are provided between the substrate portion 11a and the end plate portion 11e of the relay terminal 11. There are two bent portions between the bent portion R2 and the wire holding plate portion 11d, and the inclined plate portion 11c and the lead wire holding plate portion 11d are respectively formed with a lead wire insertion hole 11h and a through hole 11f. Therefore, the relay terminal 11 is easily deformed and absorbs stress when an external force is applied. Therefore, the stress generated at the junction between the relay terminal and the land of the circuit board when an external force is applied to the relay terminal 11 can be further reduced as compared with the case where the conventional relay terminal is used. The possibility that the relay terminal 14 is peeled off from the land 10c of the circuit board 10 can be reduced in the case that the relay terminal 14 is expanded or contracted.

  In the example shown in FIG. 2, the lead wire 13 is drawn out in a direction parallel to the plate surface of the circuit board 10. However, since the relay terminal 11 can be easily bent, the lead wire 13 is connected to the relay terminal 11. By bending the relay terminal 11 later, the lead-out direction of the lead wire can be changed as shown in FIG. 2B, for example. In the example shown in FIG. 2B, the lead wire 13 is drawn out in a direction perpendicular to the plate surface of the circuit board 10.

  In the example shown in FIG. 2, the connector 14 is elastically fitted into the through hole 11 f of the relay terminal 11. However, the connector 14 is relayed by press-fitting the connector 14 into the through hole 11 f of the relay terminal 11. It may be temporarily fixed to the terminal 11.

  In the above embodiment, the connector 14 is connected to the lead wire 13 and the connector 14 is soldered to the relay terminal 11. However, the core wire 13a of the lead wire 13 is directly soldered to the relay terminal 11. You can also In this case, as shown in FIG. 3, the tip end portion of the core wire 13a of the lead wire 13 is inserted into the lead wire insertion hole 11h from the outside of the relay terminal 11 through the through hole 11f and the claw portion 11g. The lead wire 13 is temporarily fixed to the relay terminal 11 by engaging the tip with the core wire 13 a of the lead wire 13. A portion of the lead wire core 13a located outside the relay terminal 11 is disposed along the outer surface of the end plate portion 11e of the relay terminal and is connected to the end plate portion 11e by the solder 15. . Also in this case, since the soldering operation can be performed with the lead wire 13 temporarily fixed to the relay terminal, the soldering operation of the connecting portion between the lead wire and the relay terminal can be performed without depending on the skill level of the operator. Can be easily and reliably performed.

  As shown in FIG. 3, in the case where the core wire 13a of the lead wire 13 is directly soldered to the relay terminal 11, the core wire 13a is easily inserted into the lead wire insertion hole 11h through the through hole 11f. In addition, it is preferable that the core wire 13a is previously formed into a shape as shown in the drawing.

  As shown in FIG. 3, when the lead wire core wire is directly connected to the relay terminal, it is not necessary to use a connector, so that the cost can be reduced.

  FIG. 4 shows an example of the configuration of the main part of the electronic circuit unit 20 according to the present invention. In FIG. 4, 16 is an electronic component surface-mounted on the circuit board 10 and provided on the circuit board 10. The six relay terminals 11, 11,... Are soldered to the six lands for connecting the relay terminals, and the six lead wires 13, 13,. . The circuit board 10 on which the relay terminal 11 is mounted together with the electronic component 16 is accommodated in a case (not shown), and the six lead wires 13, 13,... Are led out through grommets 21 attached to the case. . In the illustrated example, two of the six lead wires 13, 13,... Are inserted into the insulating tube 22 to form the first wire harness 23, and the other lead wires 13. , 13,... Are inserted into the insulating tube 24 to form the second wire harness 25. Terminal portions of the lead wires 13 and 13 constituting the first wire harness 23 are connected to individual connectors 26 and 26, and terminal portions of a plurality of lead wires constituting the second wire harness 25 are connected to a common connector 27. It is connected. Insulating resin is cast in the case in which the circuit board 10 is accommodated, and the circuit board 10 and components mounted on the circuit board are molded by the resin.

  In the above embodiment, a metal substrate with an insulating coating is used as a circuit board, but the circuit board used in the present invention is not limited to a metal substrate. In the above description, the electronic component is surface-mounted on the circuit board. However, in the present invention, the method of mounting the electronic component on the circuit board is arbitrary.

(A) thru | or (E) show the relay terminal used by one Embodiment of this invention with a part of circuit board, (A) is a front view, (B) is a right view, (C) and (C D) is a plan view and a bottom view of the relay terminal, respectively, and (E) is a cross-sectional view taken along line EE of (B). (A) is the front view which showed the state which connected the lead wire to the relay terminal shown in FIG. 1 via the connector, (B) is the lead-out direction of the lead wire by bending the relay terminal from the state of (A). It is the front view which showed the state which changed. It is the front view which showed the other example of the connection method of a relay terminal and a lead wire. (A) is the top view which simplified and showed a part of principal part of the structural example of the electronic circuit unit concerning this invention. (B) is a front view of the principal part of (A). It is the front view which showed the relay terminal used with the conventional electronic circuit unit. FIG. 6 is a front view showing a state in which tension is applied to a lead wire connected to the relay terminal of FIG. 5. It is the front view which showed the state which the force produced with the expansion / contraction of mold resin acted on the relay terminal of FIG. (A) And (B) is the top view and front view of the principal part of the conventional electronic circuit unit using the relay terminal shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Circuit board 10c Relay terminal connection land 11 Relay terminal 11a Substrate part 11b Standing plate part 11c Inclined plate part 11d Lead wire holding plate part 11e End plate part 13 Lead wire 13a Lead wire core wire 14 Connector

Claims (3)

A circuit board on which electronic components necessary for constituting a predetermined circuit are mounted; and a relay terminal surface-mounted on the circuit board. A lead wire for connecting the circuit board to an external circuit is the relay. In an electronic circuit unit soldered to a terminal,
The relay terminal is formed by bending a conductive plate material that can be bent and has elasticity. An inclination in which an internal angle formed between the plate portion and the upright plate portion extending from the end of the upright plate portion on the side opposite to the substrate portion in a direction inclined with respect to the upright plate portion forms an obtuse angle A plate portion, a lead wire holding plate portion extending in an angle with respect to the inclined plate portion from an end of the inclined plate portion opposite to the upright plate portion, and the inclined plate of the lead wire holding plate portion A flat plate-like end plate portion that extends in an angle with respect to the lead wire holding plate portion from the end opposite to the plate portion and that has a plate surface obliquely opposed to the plate surface of the inclined plate portion. Have
A through hole is formed through the lead wire holding plate portion of the relay terminal in the thickness direction,
A part of the inclined plate part is cut and raised to form a lead-like claw part whose tip faces the lead wire holding plate part side, and a lead wire insertion hole is formed after the claw part is cut and raised The male connector connected to the core wire of the lead wire is press-fitted into the through hole of the relay terminal or is elastically fitted and soldered to the periphery of the through hole thing,
Electronic circuit unit characterized by A circuit board on which electronic components necessary for constituting a predetermined circuit are mounted; and a relay terminal surface-mounted on the circuit board. A lead wire for connecting the circuit board to an external circuit is the relay. In an electronic circuit unit soldered to a terminal,
The relay terminal is formed by bending a conductive plate material that can be bent and has elasticity. An inclination in which an internal angle formed between the plate portion and the upright plate portion extending from the end of the upright plate portion on the side opposite to the substrate portion in a direction inclined with respect to the upright plate portion forms an obtuse angle A plate portion, a lead wire holding plate portion extending in an angle with respect to the inclined plate portion from an end of the inclined plate portion opposite to the upright plate portion, and the inclined plate of the lead wire holding plate portion A flat plate-like end plate portion that extends in an angle with respect to the lead wire holding plate portion from the end portion on the opposite side to the plate portion, and whose plate surface obliquely faces the plate surface of the inclined plate portion. Have
A through hole is formed through the lead wire holding plate portion of the relay terminal in the thickness direction,
A part of the inclined plate part is cut and raised to form a lead-like claw part whose tip faces the lead wire holding plate part side, and a lead wire insertion hole is formed after the claw part is cut and raised The lead wire core end is inserted into the lead wire insertion hole from the outside of the relay terminal through the through hole, and the claw tip end engages with the lead wire core. A portion of the lead wire core wire located outside the relay terminal is disposed along the outer surface of the end plate portion and soldered to the end plate portion;
Electronic circuit unit characterized by In an electronic circuit unit relay terminal that is surface-mounted on the circuit board in order to connect a lead wire to a circuit board on which electronic components necessary for constituting a predetermined circuit are mounted,
A board part soldered to a land provided on the circuit board and an upright standing upright from one end of the board part. An inclination in which an internal angle formed between the plate portion and the upright plate portion extending from the end of the upright plate portion on the side opposite to the substrate portion in a direction inclined with respect to the upright plate portion forms an obtuse angle An internal angle formed between the plate portion and the inclined plate portion extending in a direction perpendicular to the plate surface of the substrate portion from the end of the inclined plate portion opposite to the upright plate portion is an obtuse angle. A lead wire holding plate portion extending from the end of the lead wire holding plate portion opposite to the inclined plate portion in a direction perpendicular to the lead wire holding plate portion, and the plate surface is the inclined plate A plate-like end plate portion that diagonally opposes the plate surface of the portion,
A through hole is formed through the lead wire holding plate portion in the thickness direction,
A part of the inclined plate part is cut and raised to form a lead-like claw part whose tip faces the lead wire holding plate part side, and a lead wire insertion hole is formed after the claw part is cut and raised is being done,
A relay terminal for an electronic circuit unit.

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