electronic machines

Abstract

This electronic device comprises: a circuit board; a wire; and a terminal that is disposed on the circuit board and that electrically connects the circuit board and the wire. The terminal integrally has a misalignment prevention part for preventing misalignment of the wire from the terminal, and the terminal and the wire are joined together by a joining part.

Description

[Technical Field]

[0001] The present invention relates to an electronic device, and more particularly to an electronic device including a wire, a circuit board, and a terminal disposed on the circuit board. [Background technology]

[0002] BACKGROUND ART Conventionally, a circuit board connector that electrically connects a wire to a terminal disposed on a circuit board has been known. Such a circuit board connector is disclosed, for example, in JP 2015-72824 A.

[0003] Japanese Patent Application Laid-Open Publication No. 2015-72824 discloses a circuit board connector including a crimp terminal attached to a wire and a housing into which the crimp terminal is inserted. The crimp terminal has a lead portion that protrudes from the housing when inserted into the housing. The lead portion of the crimp terminal is soldered to a terminal disposed on the circuit board, thereby electrically connecting the wire and the terminal disposed on the circuit board.

[0004] Furthermore, the housing of the circuit board connector described in JP 2015-72824 A is provided with a positioning pin. The positioning pin of the housing is inserted into a positioning hole of the circuit board to position the housing relative to the circuit board. This prevents misalignment of the lead portions of the crimp terminals relative to the terminals arranged on the circuit board. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-72824 Summary of the Invention [Problem to be solved by the invention]

[0006] However, while the circuit board connector described in JP 2015-72824 A can prevent misalignment of the lead portions of the crimp terminals relative to the terminals arranged on the circuit board, in order to electrically connect the terminals arranged on the circuit board to the wires, it is necessary to attach the crimp terminals to the wires, insert the crimp terminals into a housing, and solder the lead portions of the crimp terminals to the terminals arranged on the circuit board. This creates problems in that the process of connecting the wires to the terminals is complicated and the number of parts required to connect the wires to the terminals increases by the amount of the housing and the crimp terminals.

[0007] The present invention has been made to solve the above-mentioned problems, and one object of the present invention is to provide an electronic device that can simplify the process of connecting wires to terminals while suppressing an increase in the number of parts required for connecting wires to terminals. [Means for solving the problem]

[0008] In order to achieve the above object, an electronic device according to one aspect of the present invention includes a circuit board, a wire, and a terminal disposed on the circuit board and electrically connecting the circuit board and the wire, the terminal having an integral displacement prevention portion for preventing the wire from being displaced relative to the terminal, and the terminal and the wire are joined by a joint portion. The terminal has a narrowed portion between the displacement prevention portion and the portion other than the displacement prevention portion. A wire is a component (electric wire) that contains a conductor for transmitting electricity, and is a broad concept that includes wires that are conductors only, wires in which the conductor is covered with an insulator (insulated wires), and wires in which the insulated wire is further protected with a protective covering (cables).

[0009] In an electronic device according to one aspect of the present invention, as described above, the terminal has an integral misalignment prevention portion for preventing the wire from misaligning with the terminal. This allows the wire to be directly joined to the terminal while the misalignment prevention portion prevents the wire from misaligning with the terminal when the terminal and the wire are joined together using a joint. As a result, the process of connecting the wire to the terminal can be simplified compared to attaching the crimp terminal to the wire, inserting the crimp terminal into a housing, and soldering the lead portion of the crimp terminal to a terminal disposed on a circuit board. Furthermore, because the terminal has an integral misalignment prevention portion, the number of components required to connect the wire to the terminal can be reduced compared to when a separate member is provided to prevent the wire from misaligning with the terminal. As a result, the process of connecting the wire to the terminal can be simplified while reducing the number of components required to connect the wire to the terminal.

[0010] In the electronic device according to the aforementioned aspect, the displacement prevention portion is preferably formed so as to surround at least a part of an outer periphery of the wire.

[0011] With this configuration, the misalignment prevention portion surrounds at least a portion of the outer periphery of the wire, thereby effectively preventing misalignment of the wire.

[0012] In the electronic device according to the aforementioned aspect, the circuit board preferably has a positioning notch provided at an end of the circuit board for positioning the wire or the terminal with respect to the circuit board.

[0013] With this configuration, the wire or terminal can be positioned relative to the circuit board using the positioning notch provided at the end of the circuit board, thereby reducing the number of parts and the complexity of the structure compared to when a component for positioning the wire or terminal relative to the circuit board is provided separately from the circuit board.

[0014] In the above-described configuration in which the circuit board has a positioning notch, the wire is preferably positioned by the positioning notch in a bent state.

[0015] With this configuration, the wire is positioned in a curved state in the positioning notch, which prevents the wire from being pulled away from the terminal near the positioning notch, thereby preventing tensile stress from being applied to the joint where the terminal and the wire are joined.

[0016] The electronic device according to the above aspect preferably further includes a resin sealing member that resin-seals the circuit board, the terminals, and the wires, and a vibration absorbing member that is attached to the resin sealing member and has an insertion hole into which the wire extending from the inside of the resin sealing member to the outside of the resin sealing member is inserted, and that is capable of absorbing vibrations.

[0017] With this configuration, the circuit board, terminals, and wires are resin-encapsulated with the resin encapsulant, thereby providing waterproof and dustproof protection for the circuit board, terminals, and wires. Furthermore, because the wires extending from the inside to the outside of the resin encapsulant are inserted into the insertion holes of the vibration absorbing member, even when the electronic device vibrates, the vibrations are absorbed by the vibration absorbing member. As a result, the wires can be prevented from wearing out and breaking due to friction caused by the vibrations of the electronic device.

[0018] In the electronic device according to the above aspect, the terminal includes a first terminal having a stepped shape and a second terminal connected to the first terminal and connected to the circuit board, the second terminal being connected to one end of the first terminal having a stepped shape, and a misalignment prevention portion being provided on the other end of the first terminal having a stepped shape.

[0019] With this configuration, by joining a wire to the first terminal, the wire can be connected to the circuit board via the second terminal connected to the circuit board and the first terminal to which the second terminal is connected. By joining the wire to the other end of the first terminal having a stepped shape, the position where the wire is joined can be changed to a position away from the second terminal connected to the circuit board. As a result, even if the position where the wire is joined needs to be changed to a position away from the second terminal depending on the arrangement of the destination device, the position where the wire is joined can be easily changed. This makes it easy to connect the destination device and the wire. Furthermore, the misalignment prevention portion provided on the other end of the first terminal can prevent the wire from misaligning with the first terminal when the wire is joined to the first terminal.

[0020] In the electronic device according to the aforementioned aspect, the terminal and the wire are preferably joined by a joint in the portion for preventing the terminal from shifting.

[0021] With this configuration, when joining the terminal and the wire, the position at which the wire is joined to the terminal (position of the joining portion) can be prevented from shifting by the position shift prevention portion of the terminal.

[0022] The electronic device according to one aspect of the present invention may also have the following configuration.

[0023] (Additional note 1) In the above-mentioned configuration in which the circuit board has a positioning notch, the wire includes a plurality of wires, and the terminal having the misalignment prevention portion and the positioning notch provided on the circuit board are provided corresponding to each of the plurality of wires.

[0024] With this configuration, each of the multiple wires can be positioned using the positioning notches provided in the circuit board corresponding to each of the multiple wires, thereby reducing the number of parts and the complexity of the structure compared to when positioning components are provided separately from the circuit board.

[0025] (Additional note 2) In a configuration in which the terminal includes a first terminal and a second terminal, the wire is arranged to extend along a direction perpendicular to the surface of the circuit board to which the second terminal is connected, and a misalignment prevention portion is formed on the other end side of the first terminal so as to extend along the wire.

[0026] With this configuration, the wire is arranged to extend in a direction perpendicular to the surface of the circuit board, so the wire can be drawn out in a direction perpendicular to the surface of the circuit board without bending the wire. As a result, even if the destination device is arranged in a direction perpendicular to the surface of the circuit board, the destination device and the wire can be easily connected. Furthermore, a misalignment prevention portion formed on the other end of the first terminal so as to extend along the wire can prevent the wire from misaligning with the first terminal. [Brief explanation of the drawings]

[0027] [Figure 1] 1 is a perspective view showing an electronic device according to a first embodiment. [Figure 2] 1 is a perspective view showing a circuit board and terminals of the electronic device according to the first embodiment. [Figure 3] FIG. 2 is a partially enlarged view of the periphery of the terminal according to the first embodiment. [Figure 4] FIG. 1 is a perspective view showing a terminal according to a first embodiment. [Figure 5] FIG. 2 is a perspective view showing the attachment of a wire according to the first embodiment. [Figure 6] 1 is a cross-sectional view showing the bonding between a wire and a terminal according to a first embodiment. [Figure 7] 1 is a cross-sectional view of an electronic device according to a first embodiment. [Figure 8] FIG. 10 is a perspective view showing an electronic device according to a second embodiment. [Figure 9] FIG. 10 is a perspective view showing a circuit board and terminals of an electronic device according to a second embodiment. [Figure 10] FIG. 10 is a perspective view showing the attachment of a first terminal according to a second embodiment. [Figure 11] FIG. 10 is a perspective view showing a first terminal according to a second embodiment. [Figure 12] FIG. 10 is a partially enlarged view of the periphery of a second terminal according to a second embodiment. [Figure 13] FIG. 10 is a first diagram for explaining an assembly process of the electronic device according to the second embodiment. [Figure 14] FIG. 10 is a second diagram for explaining the assembly process of the electronic device according to the second embodiment. [Figure 15] FIG. 10 is a third diagram for explaining the assembly process of the electronic device according to the second embodiment. [Figure 16] FIG. 10 is a cross-sectional view of an electronic device according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0028] Hereinafter, an embodiment will be described with reference to the drawings.

[0029] [First embodiment] An electronic device according to a first embodiment will be described with reference to FIGS.

[0030] (Overall configuration of electronic device) As shown in FIG. 1, the electronic device 100 includes a plurality of wires W. The electronic device 100 includes a resin sealing member 3 that seals the wires W, a circuit board 1, and terminals 2 (see FIG. 2) described below with resin. The electronic device 100 is, for example, a device for a vehicle. Specifically, the electronic device 100 is a device that processes signals from a sensor that detects the state of a motor of the vehicle. The electronic device 100 may also be an ECU (Electronic Control Unit) for the vehicle.

[0031] As shown in FIG. 1, the electronic device 100 also includes a grommet 4. The grommet 4 is attached to the resin sealing member 3. The grommet 4 is a member capable of absorbing vibrations. The grommet 4 includes, for example, acrylic rubber. The grommet 4 is an example of a "vibration absorbing member" in the claims.

[0032] As shown in FIG. 2, electronic device 100 includes a circuit board 1 and a terminal 2 disposed on circuit board 1. Circuit board 1 is a printed circuit board (PCB) on which a wiring pattern is formed using a conductor. Electronic components such as a signal processing IC (Integrated Circuit) 10a, a diode 10b, and a capacitor 10c are mounted on circuit board 1. Terminal 2 is mounted on circuit board 1 by reflow soldering. Terminal 2 is electrically connected to the conductor pattern of circuit board 1. Terminal 2 is a conductive member. Terminal 2 includes, for example, brass. Terminal 2 electrically connects circuit board 1 and wire W.

[0033] (Notch) As shown in Fig. 3, the circuit board 1 has a notch 11 provided at an end 1a of the circuit board 1 for positioning the wire W relative to the circuit board 1. The notch 11 is formed so as to cut out the end 1a of the circuit board 1 in a semicircular shape when viewed from the Z1 direction side. The notch 11 is an example of a "positioning notch" in the claims.

[0034] A plurality (six) of notches 11 are provided at the end 1a of the circuit board 1. A plurality (six) of terminals 2 are mounted on the circuit board 1. The notches 11 are provided at positions on the Y2 direction side of the terminals 2. The notches 11 are also provided at positions corresponding to the terminals 2 in the X direction.

[0035] (Position shift prevention part) As shown in FIG. 4, the terminal 2 has a misalignment prevention portion 2a for preventing misalignment of the wire W relative to the terminal 2. The terminal 2 also has a flat portion 2b extending along the Y direction. The terminal 2 has the misalignment prevention portion 2a integrally therewith. Specifically, the misalignment prevention portion 2a is formed integrally with the flat portion 2b on the Y2-direction side of the flat portion 2b. As shown in FIG. 4, the misalignment prevention portion 2a also includes a pair of guides G. The guides G are formed so as to curve upward from the Z2-direction side toward the Z1-direction side. The misalignment prevention portion 2a has a U-shape when viewed from the Y1-direction side. The terminal 2 is formed by press working. A narrowed portion 2c is provided between the misalignment prevention portion 2a and the flat portion 2b, and has a width in the X direction smaller than that of the flat portion 2b. This makes it easier to bend the misalignment prevention portion 2a (guide G) compared to when the narrowed portion 2c is not provided.

[0036] As shown in Fig. 5, a terminal 2 having a misalignment prevention portion 2a is provided corresponding to each of the plurality of wires W. In the first embodiment, a plurality of (six) terminals 2 are provided corresponding to the plurality of (six) wires W. The wires W also include conductor wires Wa including a plurality of linear conductors and an insulating coating Wb covering the conductor wires Wa. The cutout portions 11 hold the conductor wires Wa of the wires W arranged so as to be caught inside the cutout portions 11 when the circuit board 1, terminals 2, and wires W are resin-sealed with the resin sealing member 3.

[0037] Furthermore, the notches 11 provided in the circuit board 1 are provided corresponding to each of the plurality of wires W. This allows each of the plurality of wires W to be positioned by the notches 11 provided in the circuit board 1 corresponding to each of the plurality of wires W, thereby preventing an increase in the number of parts and a complicated structure compared to when a positioning member is provided separately from the circuit board 1.

[0038] The misalignment prevention unit 2a is formed to surround a portion of the outer periphery of the wire W joined to the terminal 2. Specifically, as shown in FIG. 5 , the conductor wire Wa of the wire W is joined to the terminal 2 in a state where the conductor wire Wa of the wire W is positioned so that the conductor wire Wa is sandwiched between a pair of guides G in the X direction. That is, the conductor wire Wa of the wire W and the terminal 2 are joined to each other at a position where the conductor wire Wa of the wire W is sandwiched between the pair of guides G of the misalignment prevention unit 2a in the X direction. Therefore, when the conductor wire Wa of the wire W is joined to the terminal 2, the conductor wire Wa of the wire W can be joined to the terminal 2 while preventing misalignment of the conductor wire Wa of the wire W in the X1 direction and the X2 direction by the pair of guides G of the misalignment prevention unit 2a. This effectively suppresses misalignment of the wire W.

[0039] Furthermore, the terminal 2 and the wire W are joined at a joint J (see FIG. 6 ) at the displacement prevention portion 2a of the terminal 2. Specifically, while the conductor line Wa of the wire W is pressed against the displacement prevention portion 2a of the terminal 2 by the welding electrode E1, the welding electrode E2 is pressed against the flat portion 2b of the terminal 2. Then, a current is passed between the welding electrodes E1 and E2. As a result, resistance welding is performed between the conductor line Wa of the wire W and the terminal 2, using heat (Joule heat) generated by contact resistance.

[0040] (Configuration of grommet and resin sealing member) As shown in FIG. 6 , the grommet 4 has an insertion hole 4a into which a wire W extending from the interior of the resin sealing member 3 to the exterior of the resin sealing member 3 is inserted. The wire W is inserted into the insertion hole 4a of the grommet 4 and joined to the terminal 2 of the circuit board 1 while being positioned relative to the terminal 2 by the notch 11. As shown in FIG. 7 , the grommet 4 is resin-sealed by the resin sealing member 3 so that a portion of the Y2 direction side is exposed. The grommet 4, together with the circuit board 1, the terminal 2, and the wire W, are resin-sealed by the resin sealing member 3. The resin sealing member 3 is made of an insulating resin. During molding, the resin sealing member 3 is parted at the grommet 4 position by a molding die. The insertion hole 4a of the grommet 4 is positioned on the Z2 direction side of the circuit board 1. The wire W is arranged in a curved state in the portion resin-sealed by the resin sealing member 3 between the terminal 2 and the insertion hole 4a of the grommet 4. That is, the wire W is bent and positioned by the notch 11. Specifically, the wire W is arranged in a Z-shape in the portion sealed with the resin sealing member 3 when viewed from the X2 direction side.

[0041] (Effects of the first embodiment) In the first embodiment, the following effects can be obtained.

[0042] In the first embodiment, as described above, the terminal 2 has an integral displacement prevention portion 2a for preventing the wire W from shifting relative to the terminal 2. As a result, when the terminal 2 and the wire W are joined at the joint J, the wire W can be directly joined to the terminal 2 while preventing the wire W from shifting relative to the terminal 2 by the displacement prevention portion 2a of the terminal 2. As a result, the process of connecting the wire W to the terminal 2 can be simplified compared to when a crimp terminal is attached to the wire W, the crimp terminal is inserted into a housing, and the lead portion of the crimp terminal is soldered to the terminal 2 disposed on the circuit board 1. Furthermore, because the terminal 2 has the integral displacement prevention portion 2a, an increase in the number of parts required to connect the wire W to the terminal 2 can be suppressed compared to when a separate member is provided to prevent the wire W from shifting relative to the terminal 2. As a result, the process of connecting the wire W to the terminal 2 can be simplified while suppressing an increase in the number of parts required to connect the wire W to the terminal 2.

[0043] In the first embodiment, as described above, the misalignment prevention part 2a is formed so as to surround at least a part of the outer periphery of the wire W. As a result, by having the misalignment prevention part 2a surround at least a part of the outer periphery of the wire W, misalignment of the wire W can be effectively suppressed.

[0044] In the first embodiment, as described above, the circuit board 1 has the notch 11 provided at the end 1a of the circuit board 1 for positioning the wire W relative to the circuit board 1. As a result, the wire W can be positioned relative to the circuit board 1 by the notch 11 provided at the end 1a of the circuit board 1, and therefore, compared to when a member for positioning the wire W relative to the circuit board 1 is provided separately from the circuit board 1, an increase in the number of parts and a complicated structure can be suppressed.

[0045] In the first embodiment, as described above, the wire W is positioned in a curved state by the notch 11 (positioning notch). As a result, the wire W is arranged in a curved state in the notch 11, and therefore, the wire W can be prevented from being pulled away from the terminal 1a in the vicinity of the notch 11. As a result, it is possible to prevent tensile stress from being applied to the joint J where the terminal 1a and the wire W are joined.

[0046] In the first embodiment, as described above, the electronic device 100 includes a resin sealing member 3 that resin-seals the circuit board 1, the terminals 2, and the wires W. This resin sealing member 3 seals the circuit board 1, the terminals 2, and the wires W, thereby providing waterproof and dustproof protection for the circuit board 1, the terminals 2, and the wires W. The electronic device 100 also includes a grommet 4 that is attached to the resin sealing member 3 and has an insertion hole 4a into which the wire W extending from the interior of the resin sealing member 3 to the exterior of the resin sealing member 3 is inserted, and that is capable of absorbing vibrations. This allows the wire W extending from the interior of the resin sealing member 3 to the exterior to be inserted into the insertion hole 4a of the grommet 4, so that even when the electronic device 100 vibrates, the vibrations are absorbed by the grommet 4. As a result, the wire W can be prevented from being worn and broken due to friction caused by vibrations of the electronic device 100.

[0047] In the first embodiment, as described above, the terminal 2 and the wire W are joined by the joint J in the misalignment prevention portion 2a of the terminal 2. This makes it possible to prevent the misalignment prevention portion 2a of the terminal 2 from shifting the position at which the wire W is joined to the terminal 2 (the position of the joint J) when joining the terminal 2 and the wire W.

[0048] [Second embodiment] The configuration of an electronic device 200 according to a second embodiment of the present invention will be described with reference to Figures 8 to 16. Note that the same components as those in the first embodiment are given the same reference numerals, and the description thereof will be omitted.

[0049] (Overall configuration of electronic device) 8, in electronic device 200, wire W is arranged to extend from grommet 204 in direction Z1. Similar to electronic device 100 according to the first embodiment, resin sealing member 3 resin-seals wire W, circuit board 1 (signal processing IC 10a, diode 10b, capacitor 10c (see FIG. 9), etc.), and terminal 202. Note that grommet 204 is an example of a "vibration absorbing member" in the claims.

[0050] 10, in electronic device 200, wire W is arranged to extend along the Z direction perpendicular to surface 1b (XY plane) of circuit board 1. As a result, wire W is arranged to extend along the Z direction perpendicular to surface 1b of circuit board 1, and therefore wire W can be drawn out in the Z direction without bending wire W. As a result, even when a connection destination device is arranged in the Z direction with respect to circuit board 1, connection destination device and wire W can be easily connected.

[0051] (Terminal configuration) As shown in FIG. 10, electronic device 200 includes terminal 202 including first terminal 21 and second terminal 22. Second terminal 22 is connected to first terminal 21 and also connected to circuit board 1. Second terminal 22 has protrusions 22a and 22b that curve to protrude in direction Z1. Welding electrode E1 (see FIG. 6) comes into contact with protrusion 22a when resistance welding first terminal 21 and second terminal 22 together. First terminal 21 comes into contact with protrusion 22b when resistance welding first terminal 21 and second terminal 22 together. That is, first terminal 21 and second terminal 22 are joined at protrusion 22b of second terminal 22.

[0052] As shown in FIG. 11 , the first terminal 21 has a stepped shape including an upper portion 21b and a lower portion 21c. The second terminal 22 is connected to one end (Y1 direction) of the first terminal 21. Specifically, as shown in FIG. 10 , the second terminal 22 is connected to the upper portion 21b of the first terminal 21. Also, as shown in FIG. 11 , a misalignment prevention portion 21a is provided on the other end (Z2 direction) of the first terminal 21. Specifically, the misalignment prevention portion 21a is formed so as to extend from the lower portion 21c in the Z2 direction. In the second embodiment, the plurality of (six) first terminals 21 are integrally molded and are separated into the six first terminals 21 by cutting the connecting portion 21d. The first terminals 21 are cut off after the wire W is joined to the first terminal 21 and before the first terminal 21 is joined to the second terminal 22.

[0053] 12, the circuit board 1 has a notch 11 provided at an end 1a of the circuit board 1 for positioning the first terminal 21 relative to the circuit board 1. The notch 11 is provided at a position on the Y2 direction side of the second terminal 22. The notch 11 is provided at a position corresponding to the second terminal 22 in the X direction.

[0054] (Electronic equipment assembly) 13, in assembling electronic device 200, first, wire W is inserted into grommet 204. Wire W is inserted into insertion hole 204a of grommet 204 (see FIG. 16).

[0055] 14, the first terminal 21 and the wire W are joined by resistance welding. Specifically, the conductor line Wa of the wire W is joined by resistance welding at the displacement prevention portion 21a of the first terminal 21. As shown in FIG. 15, the displacement prevention portion 21a is disposed on the Z2 direction side of the circuit board 1. That is, the first terminal 21 is resistance welded to the wire W on the Z2 direction side of the circuit board 1.

[0056] In the second embodiment, the misalignment prevention portion 2a is formed on the other end side (Z2 direction side) of the first terminal 21 so as to extend along the wire W. As a result, on the other end side of the first terminal 21, the misalignment prevention portion 21a can prevent the wire W from misaligning with the first terminal 21.

[0057] 15, the second terminal 22 mounted on the circuit board 1 is resistance-welded to the first terminal 21. The first terminal 21 is resistance-welded to the second terminal 22 on the Z1 direction side of the circuit board 1. In the second embodiment, the first terminal 21 and the second terminal 22 are resistance-welded together while the grommet 204 is pressed against the end 1a of the circuit board 1. After the first terminal 21 and the second terminal 22 are resistance-welded together, the circuit board 1, the first terminal 21, the second terminal 22, the wire W, and the grommet 204 are resin-sealed with the resin sealing member 3. As shown in FIG. 16, the first terminal 21 is disposed so as to be sandwiched between the notch 11 of the circuit board 1 and the grommet 204. The grommet 204 is resin-sealed with the resin sealing member 3 so that a portion of the Y2 direction side is exposed.

[0058] The other configurations of the second embodiment are the same as those of the first embodiment.

[0059] (Effects of the second embodiment) In the second embodiment, the following effects can be obtained.

[0060] In the second embodiment, similarly to the first embodiment, the process of connecting the wire W to the terminal 2 can be simplified while suppressing an increase in the number of parts required to connect the wire W to the terminal 2.

[0061] In the second embodiment, as described above, the circuit board 1 has the notch 11 provided at the end 1a of the circuit board 1 for positioning the first terminal 21 relative to the circuit board 1. This allows the second terminal 22 to be positioned relative to the circuit board 1 by the notch 11 provided at the end 1a of the circuit board 1, so that an increase in the number of parts and a complicated structure can be suppressed compared to when a member for positioning the second terminal 22 relative to the circuit board 1 is provided separately from the circuit board 1.

[0062] In the second embodiment, as described above, the terminal 2 includes a first terminal 21 having a stepped shape and a second terminal 22 connected to the first terminal 21 and connected to the circuit board 1. The second terminal 22 is connected to one end of the first terminal 21 having a stepped shape, and a misalignment prevention portion 21a is provided on the other end of the first terminal 21 having a stepped shape. By joining the wire W to the first terminal 21, the wire W can be connected to the circuit board 1 via the second terminal 22 connected to the circuit board 1 and the first terminal 21 to which the second terminal 22 is connected on one end. By joining the wire W to the other end of the first terminal 21 having a stepped shape, the position at which the wire W is joined can be changed to a position spaced apart from the second terminal 22 connected to the circuit board 1. As a result, even if the position at which the wire W is joined needs to be spaced apart from the second terminal 22 depending on the arrangement of the device to which the wire W is connected, the position at which the wire W is joined can be easily changed. This allows the device to be easily connected to the wire W. Furthermore, by using the misalignment prevention portion 21a provided on the other end side of the first terminal 21, it is possible to prevent the wire W from being misaligned with respect to the first terminal 21 when the wire W is joined to the first terminal 21.

[0063] Other effects of the second embodiment are the same as those of the first embodiment.

[0064] [Variations] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not by the description of the above embodiments, and further includes all modifications (variations) within the meaning and scope of the claims.

[0065] For example, in the first embodiment, the terminal 2 and the wire W are joined by resistance welding, but the present invention is not limited to this. In the present invention, the terminal and the wire may be joined by soldering.

[0066] In the first embodiment, the electronic device 100 is an in-vehicle device, but the present invention is not limited to this. In the present invention, the electronic device is not limited to an in-vehicle device as long as it is a device including a circuit board, wires, and terminals.

[0067] In the first embodiment, the terminal 2 and the wire W are joined by the joint J at the displacement prevention portion 2a of the terminal 2, but the present invention is not limited to this. In the present invention, the terminal and the wire may be joined by the joint at a location other than the displacement prevention portion.

[0068] In the first embodiment, the circuit board 1 has the notch 11 (positioning notch) provided at the end 1a of the circuit board 1 for positioning the wire W relative to the circuit board 1, but the present invention is not limited to this. In the present invention, a member for positioning the wire W relative to the circuit board may be provided separately from the circuit board.

[0069] In the second embodiment, the circuit board 1 has the notch 11 (positioning notch) provided at the end 1a of the circuit board 1 for positioning the first terminal 21 relative to the circuit board 1, but the present invention is not limited to this. In the present invention, a member for positioning the terminal relative to the circuit board may be provided separately from the circuit board.

[0070] In the first embodiment, the electronic device 100 includes the resin sealing member 3 that seals the circuit board 1, the terminals 2, and the wires W with resin, but the present invention is not limited to this. In the present invention, the electronic device does not need to include the resin sealing member that seals the circuit board, the terminals, and the wires with resin. In other words, the circuit board, the terminals, and the wires do not need to be sealed with resin.

[0071] In the first embodiment, the electronic device 100 has an insertion hole 4a into which the wire W extending from the inside of the resin sealing member 3 to the outside of the resin sealing member 3 is inserted, and includes a grommet 4 (vibration absorbing member) that can absorb vibrations and is attached to the resin sealing member 3, but the present invention is not limited to this. In the present invention, the electronic device does not have to include a resin sealing member and a vibration absorbing member.

[0072] In the first embodiment, the wire W is arranged in a curved state in the portion between the terminal 2 and the insertion hole 4a of the grommet 4 (vibration absorbing member) that is sealed with the resin sealing member 3 (i.e., the wire W is positioned by the notch 11 (positioning notch) in the curved state), but the present invention is not limited to this. In the present invention, the wire may be arranged in a straight state in the portion between the terminal and the insertion hole of the vibration absorbing member that is sealed with the resin sealing member (i.e., the wire may be positioned by the positioning notch in the straight state).

[0073] In the second embodiment, the terminal 2 includes the first terminal 21 and the second terminal 22 that is connected to the first terminal 21 and also connected to the circuit board 1, but the present invention is not limited to this. In the present invention, the circuit board and the wire may be electrically connected via three or more terminals.

[0074] In the second embodiment, the terminal 2 includes the first terminal 21 having a stepped shape, but the present invention is not limited to this. In the present invention, the first terminal may be an L-shaped terminal.

[0075] In the first embodiment, the displacement prevention portion 2a is formed so as to surround a portion of the outer periphery of the wire W joined to the terminal 2, but the present invention is not limited to this. In the present invention, the displacement prevention portion may be formed in a cylindrical shape so as to surround the entire outer periphery of the wire W joined to the terminal.

[0076] In the first embodiment, the notches 11 (positioning notches) provided on the circuit board 1 are provided corresponding to each of the plurality of wires W, but the present invention is not limited to this. In the present invention, the positioning notches provided on the circuit board may be provided for only one of the plurality of wires W. [Explanation of symbols]

[0077] 1 circuit board 1a (circuit board) edge 1b side 2, 202 terminal 2a, 21a Position shift prevention part 3 Resin sealing material 4, 204 Grommet (vibration absorbing member) 4a, 204a insertion holes 11 Notch (positioning notch) 21 1st terminal 22 2nd terminal 100, 200 electronic equipment J joint W Wire

Claims

1. A circuit board; A wire, a terminal disposed on the circuit board and electrically connecting the circuit board to the wire; the terminal has an integrally formed misalignment prevention portion for preventing the wire from being misaligned relative to the terminal, and the terminal and the wire are joined by a joint portion; The terminal has a narrowed portion between the displacement prevention portion and a portion other than the displacement prevention portion.

2. The electronic device according to claim 1 , wherein the displacement prevention portion is formed so as to surround at least a part of an outer periphery of the wire.

3. The electronic device according to claim 1 , wherein the circuit board has a positioning notch provided at an end of the circuit board for positioning the wire or the terminal relative to the circuit board.

4. The electronic device according to claim 3 , wherein the wire is positioned by the positioning notch in a bent state.

5. a resin sealing member that seals the circuit board, the terminals, and the wires with resin; 2. The electronic device according to claim 1, further comprising: a vibration absorbing member attached to the resin sealing member, the vibration absorbing member having an insertion hole into which the wire extending from the inside of the resin sealing member to the outside of the resin sealing member is inserted, the vibration absorbing member being capable of absorbing vibration.

6. the terminals include a first terminal having a stepped shape and a second terminal connected to the first terminal and connected to the circuit board; the second terminal is connected to one end of the first terminal having the stepped shape, The electronic device according to claim 1 , wherein the displacement prevention portion is provided on the other end side of the first terminal having the stepped shape.

7. The electronic device according to claim 1 , wherein the terminal and the wire are joined by the joint in the displacement prevention portion of the terminal.

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