Terminal and substrate structure

Abstract

This terminal is mounted on a substrate and comprises: a body having a screw seat surface in which a hole into which a screw can be inserted is formed; a first stress relaxation part provided at the end part on one side of the body in a second direction orthogonal to a first direction along which the hole penetrates; a second stress relaxation part separated from the first stress relaxation part to the other side in the second direction and provided in the body; a first mounting part connected to the first stress relaxation part and mounted on the substrate; and a second mounting part connected to the second stress relaxation part and mounted on the substrate.

Description

Terminal and Substrate Structure

[0001] The present disclosure relates to a terminal and a substrate structure.

[0002] Conventionally, as a substrate structure, in a terminal having a protruding portion with a height equal to or greater than the substrate thickness, soldering is performed by a flow soldering process (see Patent Document 1). The joint portion of the terminal is soldered to the substrate by a flow soldering process, the main body portion is bent so as to be horizontal with the substrate, and the protruding portion is brought into contact with the grounding conductor and fastened by a screw.

[0003] Japanese Patent Laid-Open No. 8-69826

[0004] In the above-described substrate structure, since it is necessary to connect the terminal to the substrate in the flow soldering process, in a substrate composed only of surface mounting, an additional flow soldering process is required. Further, after mounting the terminal on the substrate, since it is necessary to bend the terminal, there is a problem that a large stress acts on the portion joined by solder during screwing.

[0005] An object of the present disclosure is to provide a terminal and a substrate structure that can easily mount a terminal on a substrate and join another member to the terminal in a stable state.

[0006] A terminal according to one embodiment of the present disclosure includes a main body portion having a screw seat surface in which a hole portion through which a screw can be inserted is formed, a first stress relaxation portion provided at one end portion of the main body portion in a second direction intersecting a first direction through which the hole portion passes, a second stress relaxation portion provided on the main body portion and separated from the first stress relaxation portion to the other side in the second direction, a first mounting portion connected to the first stress relaxation portion and mounted on the substrate, and a second mounting portion connected to the second stress relaxation portion and mounted on the substrate.

[0007] The terminal comprises a first stress relief portion provided at one end of the main body in a second direction intersecting the first direction through which the hole penetrates, and a first mounting portion connected to the first stress relief portion and mounted on the substrate. The terminal also comprises a second stress relief portion provided on the main body, spaced apart from the first stress relief portion toward the other side in the second direction, and a second mounting portion connected to the second stress relief portion and mounted on the substrate. Due to the positional relationship of the first and second mounting portions, the terminal can be mounted on the substrate in a stable state by both mounting portions. Therefore, soldering by the SMT process is possible when attaching the terminal to the substrate. Furthermore, stress relief portions are provided between each mounting portion and the main body. Therefore, when joining other members by screw fastening through the hole in the main body, each stress relief portion can relieve the stress transmitted to each mounting portion. As a result, the terminal can be easily mounted on the substrate and other members can be joined to the terminal in a stable state.

[0008] The screw seating surface may be positioned at a distance from the first mounting portion and the second mounting portion in the first direction, on the side into which the screw is inserted. In this case, when the terminal is mounted on the circuit board, the screw seating surface is positioned close to other components. Therefore, the terminal can be screwed to other components in a stable manner.

[0009] Either the first stress-relieving section or the second stress-relieving section may have a U-shape that curves outward in either direction in the first direction when viewed from a width direction perpendicular to the first direction. In this case, the U-shape allows for efficient stress relief.

[0010] A slit may be formed between the main body and at least one of the first stress-relieving section and the second stress-relieving section. In this case, the slit makes the stress-relieving section more easily deformable, thereby improving the stress-relieving performance.

[0011] The first mounting section and the second mounting section may be positioned opposite each other in the second direction, with the main body in between. In this case, the first and second mounting sections can mount the main body on the circuit board in a balanced and stable manner.

[0012] A substrate structure according to one embodiment of the present disclosure is a substrate structure comprising the terminals described above and a substrate having through holes, wherein the main body is positioned inserted into the through holes, and screws are inserted into the through holes and the holes.

[0013] The circuit board structure is equipped with the terminals described above, and therefore can achieve the same functions and effects as those of the terminals described above. In the circuit board structure, the main body is positioned inserted into the through-holes of the circuit board. Screws are inserted into the through-holes of the circuit board and the holes in the main body. This allows the orientation of the main body to be supported while each mounting part is mounted near the edge of the through-hole. As a result, the orientation of the main body inserted into the through-hole is stabilized.

[0014] At least one of the first mounting section and the second mounting section may be electrically connected to the substrate. In this case, the mounting section can simultaneously provide stable support for the main body and make an electrical connection to the substrate.

[0015] According to this disclosure, it is possible to provide a terminal and a substrate structure that can be easily mounted on a substrate in a stable state.

[0016] This is a side view showing a power supply device equipped with a substrate structure according to an embodiment of this disclosure. This is a perspective view of the substrate structure according to this embodiment of this disclosure. This is an unfolded perspective view of the substrate structure according to this embodiment of this disclosure. This is a plan view of the terminals. This is a cross-sectional view along the line V-V shown in Figure 3. This is a plan view showing a modified terminal.

[0017] Referring to Figure 1, a power supply unit 1 comprising a substrate structure 100 according to an embodiment of the present disclosure will be described. Figure 1 is a side view showing a power supply unit 1 comprising a substrate structure 100 according to an embodiment of the present disclosure. As shown in Figure 1, the power supply unit 1 comprises a base plate 2, a plurality of substrates 3, and a cover 4. The power supply unit 1 is constructed by assembling the cover 4 to the base plate 2, which houses the substrates 3. A die-casting alloy or the like is used as the material for the base plate 2. The power supply unit 1 is a unit that includes, for example, an AC / DC power supply or a DC / DC converter. The substrate structure 100 is provided inside the power supply unit 1. However, the overall shape of the power supply unit 1 is not limited to that shown in Figure 1. Also, the position of the substrate structure 100 inside the power supply unit 1 is not particularly limited. Furthermore, the equipment to which the substrate structure 100 is applied is not limited to the power supply unit 1.

[0018] A substrate structure 100 according to an embodiment of the present disclosure will be described with reference to Figures 2 to 4. Figure 2 is a perspective view of the substrate structure 100 according to this embodiment of the present disclosure. Figure 3 is an unfolded perspective view of the substrate structure 100 according to this embodiment of the present disclosure. Figure 4 is a plan view of the terminal 10. Figure 5 is a cross-sectional view along the line IV-IV shown in Figure 3. The X-axis and Y-axis directions are set in relation to the direction in which the bottom surface of the base plate 2 and the substrate 3 (see Figure 1) expand. The Z-axis direction is also set in relation to the bottom surface of the base plate 2 and the thickness direction of the substrate 3. In this specification, the upper side is defined as the positive side in the Z-axis direction, and the lower side is defined as the negative side in the Z-axis direction. In this specification, for convenience of explanation, terms such as "up" and "down" may be used, but these do not limit the orientation of the power supply 1 or the substrate structure 100 when in use. As shown in Figures 2, 3, and 5, the substrate structure 100 comprises a base plate 2, a substrate 3, a terminal 10, a bus bar 20, and a screw 7.

[0019] The base plate 2 has an upper surface 2a that extends parallel to the XY plane. The upper surface 2a of the base plate 2 is provided with a plurality of boss portions 2b for screwing the substrate 3 to it. The substrate 3 is a plate-shaped member on which electronic components (not shown) are mounted. The substrate 3 is positioned at a location spaced upward from the upper surface 2a of the base plate 2. The substrate 3 is placed on the base plate 2 by being supported by the upper ends of the boss portions 2b and then screwed to it.

[0020] The substrate 3 has through holes 6 for arranging the terminals 10. The through holes 6 penetrate the substrate 3 in the Z-axis direction, extending from the front surface 3a to the back surface 3b. In the example shown in Figure 2, the substrate 3 has through holes 6A and 6B. The through holes 6A and 6B have a rectangular shape in plan view. Through holes 6A and 6B are positioned spaced apart from each other in the X-axis direction. The number, position, shape, etc., of the through holes 6 are not particularly limited.

[0021] Terminal 10 is a conductive member mounted on the substrate 3. Terminal 10 is constructed by cutting a metal plate into a predetermined shape and partially bending it. Terminal 10 is connected to a conductive part on the substrate 3 (not shown). In the example shown in Figure 2, terminal 10A is placed in the through hole 6A of the substrate 3, and terminal 10B is placed in the through hole 6B of the substrate 3.

[0022] The busbar 20 is a conductive member for electrically connecting the substrate 3 to other components. In this embodiment, the busbar 20 is positioned between the back surface 3b of the substrate 3 and the upper surface 2a of the base plate 2. The busbar 20 is fastened to the terminal 10 via screws 7. In this embodiment, the busbar 20 extends to the positions of both terminal 10A and terminal 10B and is electrically connected to both terminal 10A and terminal 10B. For example, when terminal 10 is used as a ground terminal, the busbar 20 is connected to a member for grounding.

[0023] As shown in Figures 3 to 5, the terminal 10 comprises a main body 11, a first stress relief portion 12, a second stress relief portion 13, a first mounting portion 14, and a second mounting portion 16. Although this explanation focuses on terminal 10A, the same explanation applies to terminal 10B, except for its orientation.

[0024] The main body portion 11 is a plate-like portion with a hole 17 through which a screw 7 can be inserted. The main body portion 11 also has a screw seating surface 11a on the positive side in the Z-axis direction and a joining surface 11b on the negative side in the Z-axis direction. The hole 17 penetrates the main body portion 11 in the Z-axis direction so as to extend from the screw seating surface 11a to the joining surface 11b. Therefore, the direction in which the hole 17 penetrates (first direction) is the Z-axis direction. The main body portion 11 has an annular shape. The outer shape of the main body portion 11 is not particularly limited and may be rectangular, etc. The inner diameter of the hole 17 is larger than the outer diameter of the shaft portion 7a of the screw 7 and smaller than the outer diameter of the head 7b of the screw 7. The screw 7 is inserted into the main body portion 11 from the positive side in the Z-axis direction toward the negative side (see Figure 3). The screw seating surface 11a functions as a seating surface that receives the head 7b of the screw 7. The screw seating surface 11a receives the head 7b of the screw 7 via the washer 8. The joining surface 11b is the surface that contacts the bus bar 20 and is joined to the bus bar 20 by fastening with the screw 7.

[0025] Furthermore, a center line CL extending in the Z-axis direction is set with respect to the hole 17. In addition, a reference line SL1 passing through the center line CL and parallel to the Y-axis direction is set, and a reference line SL2 passing through the center line CL and parallel to the X-axis direction is set (see Figure 4). In this embodiment, the terminal 10A has a shape that is symmetrical in a plan view with respect to the reference line SL1.

[0026] The first stress relaxation section 12 is a plate-shaped portion provided at one end of the main body 11 in the Y-axis direction (second direction) perpendicular (intersecting) to the Z-axis direction. The first stress relaxation section 12 is provided at the positive end in the Y-axis direction. The first mounting section 14 is a plate-shaped portion connected to the first stress relaxation section 12 and mounted on the substrate 3. The first mounting section 14 is connected to the positive end in the Y-axis direction of the first stress relaxation section 12.

[0027] The first stress relief section 12 is positioned between the main body 11 and the first mounting section 14 in the Y-axis direction and relieves stress. The first stress relief section 12 relieves the stress directed from the main body 11 to the first mounting section 14 when the main body 11 is screwed in. The first stress relief section 12 has a constant cross-sectional shape and extends in the X-axis direction as its width direction. The first stress relief section 12 extends to the positive side in the X-axis direction beyond the reference line SL1, and the first stress relief section 12 extends to the negative side in the X-axis direction beyond the reference line SL1 (see Figure 4). The first stress relief section 12 has a U-shape that curves outward in the positive side in the Z-axis direction when viewed from the width direction (in this case, the X-axis direction) perpendicular to the Z-axis direction.

[0028] Specifically, the first stress relaxation section 12 has a side wall section 12a, a curved section 12b, and a side wall section 12c. The side wall section 12a is a wall section that rises from the positive end in the Y-axis direction of the main body section 11 toward the positive side in the Z-axis direction. The side wall section 12a spreads out parallel to the XZ plane. The side wall section 12c is a wall section that rises from the negative end in the Y-axis direction of the first mounting section 14 toward the positive side in the Z-axis direction. The side wall section 12c spreads out parallel to the XZ plane. The side wall section 12c is positioned at a distance from the side wall section 12a toward the positive side in the Y-axis direction, and is positioned opposite the side wall section 12a. The curved section 12b is curved so as to protrude toward the positive side in the Z-axis direction. As a result, the curved section 12b forms an inverted U shape when viewed in the state shown in Figure 5. The negative end of the curved portion 12b in the Y-axis direction is connected to the upper end of the side wall portion 12a. The positive end of the curved portion 12b in the Y-axis direction is connected to the upper end of the side wall portion 12c.

[0029] The first mounting section 14 is connected to the lower end of the side wall portion 12c of the first stress relaxation section 12 and extends from the lower end toward the positive side in the Y-axis direction. The first mounting section 14 spreads out so as to be parallel to the XY plane. The first mounting section 14 extends to the positive side in the X-axis direction beyond the reference line SL1, and the first mounting section 14 extends to the negative side in the X-axis direction beyond the reference line SL1 (see Figure 4).

[0030] A slit 18 is formed between the main body portion 11 and the first stress relaxation portion 12. The slit 18 is formed at the corner between the side wall portion 12a and the main body portion 11. The slit 18 is also formed at the central position in the X-axis direction of the side wall portion 12a.

[0031] The second stress relaxation sections 13A and 13B are plate-shaped members provided on the main body 11, spaced apart from the first stress relaxation section 12 of the main body 11 on the negative side (other side) in the Y-axis direction. The second stress relaxation sections 13A and 13B are provided at the negative end of the main body 11 in the Y-axis direction. At this position, the second stress relaxation section 13A is provided at the negative end of the main body 11 in the X-axis direction, and the second stress relaxation section 13B is provided at the positive end of the main body 11 in the X-axis direction. The second mounting sections 16A and 16B are plate-shaped portions connected to the second stress relaxation sections 13A and 13B, respectively, and mounted on the substrate 3. The second mounting sections 16A and 16B are connected to the negative end of the second stress relaxation sections 13A and 13B in the Y-axis direction. The second stress relaxation section 13A and the second mounting section 16A are positioned on the negative side in the X-axis direction relative to the reference line SL1, while the second stress relaxation section 13B and the second mounting section 16B extend to the positive side in the X-axis direction relative to the reference line SL1 (see Figure 4). With this arrangement, the first mounting section 14 and the second mounting sections 16A and 16B are positioned opposite each other in the Y-axis direction, with the main body in between.

[0032] The second stress-relieving sections 13A and 13B are positioned between the main body 11 and the second mounting sections 16A and 16B in the Y-axis direction to relieve stress. The second stress-relieving sections 13A and 13B relieve the stress that flows from the main body 11 to the second mounting sections 16A and 16B when the main body 11 is screwed in. The second stress-relieving sections 13A and 13B have a constant cross-sectional shape and extend in the X-axis direction as the width direction. The second stress-relieving sections 13A and 13B have a U-shape that curves outward in the positive direction in the Z-axis direction when viewed from the width direction perpendicular to the Z-axis direction (in this case, the X-axis direction).

[0033] Specifically, the second stress relaxation sections 13A and 13B have a side wall section 13a, a curved section 13b, and a side wall section 13c. The side wall section 13a is a wall section that rises from the negative end in the Y-axis direction of the main body section 11 toward the positive side in the Z-axis direction. The side wall section 13a spreads out parallel to the XZ plane. The side wall section 13c is a wall section that rises from the positive end in the Y-axis direction of the second mounting section 16A toward the positive side in the Z-axis direction. The side wall section 13c spreads out parallel to the XZ plane. The side wall section 13c is positioned at a distance from the side wall section 13a toward the negative side in the Y-axis direction and is positioned opposite to the side wall section 13a. The curved section 13b is curved so as to protrude toward the positive side in the Z-axis direction. As a result, the curved section 13b forms an inverted U shape. The positive end of the curved portion 13b in the Y-axis direction is connected to the upper end of the side wall portion 13a. The negative end of the curved portion 13b in the Y-axis direction is connected to the upper end of the side wall portion 13c.

[0034] The second mounting section 16A is connected to the lower end of the side wall portion 13c of the second stress relaxation section 13A and extends from that lower end toward the negative side in the Y-axis direction. The second mounting section 16A spreads out so as to be parallel to the XY plane.

[0035] Furthermore, it is sufficient that at least one of the first mounting portion 14 and the second mounting portion 16 is electrically connected to the substrate 3. The state in which the first mounting portion 14 is electrically connected to the substrate 3 is a state in which electrodes are provided on the substrate 3 at the position where the first mounting portion 14 is mounted, and are joined by soldering. The state in which the second mounting portion 16 is electrically connected to the substrate 3 is a state in which electrodes are provided on the substrate 3 at the position where the second mounting portion 16 is mounted, and are joined by soldering. For example, the first mounting portion 14 may be electrically connected to the substrate 3, and the second mounting portion 16 may simply be placed on the substrate 3 without being electrically connected. In this case, the second mounting portion 16 does not need to be soldered. Alternatively, the second mounting portion 16 may also be electrically connected to the substrate 3 by soldering. In this case, both the second mounting portions 16A and 16B may be electrically connected to the substrate 3, or only one of them may be electrically connected.

[0036] Next, with reference to Figure 5, the positional relationship of each component of the substrate structure 100 in the Z-axis direction will be described. The screw seat surface 11a is positioned at a distance from the first mounting portion 14 and the second mounting portion 16 in the Z-axis direction, on the side into which the screw 7 is inserted, i.e., on the negative side in the Z-axis direction. In this embodiment, the first mounting portion 14 and the second mounting portion 16 are positioned at the same location in the Z-axis direction and are located on the surface 3a of the substrate 3. The main body portion 11 is positioned at a distance from the first mounting portion 14 and the second mounting portion 16 in the Z-axis direction. In this embodiment, the main body portion 11 is positioned at a distance from the back surface 3b of the substrate 3 in the Z-axis direction. As a result, a portion of the head 7b of the screw 7 is located inside the through hole 6. With this configuration, the joining surface 11b of the main body portion 11 is positioned at a distance from the back surface 3b of the substrate 3 in the negative side in the Z-axis direction. Therefore, the busbar 20 is joined to the terminal 10 at a distance from the back surface 3b of the substrate 3 in the negative side in the Z-axis direction. The busbar 20 is joined to the main body 11 by being sandwiched between the main body 11 and the nut 9 on which the screw 7 is fastened.

[0037] Next, the manufacturing procedure for the substrate structure 100 will be described. First, the terminals 10 are joined to the substrate 3 having through holes 6. The first mounting portion 14 and the second mounting portion 16 are placed and mounted on the surface 3a of the substrate 3. At this time, at least one of the first mounting portion 14 and the second mounting portion 16 is electrically connected to the substrate 3 by soldering. For example, solder is printed onto the electrodes of the substrate 3 using an SMT (Surface-Mount-Device) process, and soldering is performed by reflow with the mounting portions 14 and 16 mounted on the substrate 3. Next, with the busbar 20 in contact with the main body portion 11 of the terminal 10, the main body portion 11 and the busbar 20 are joined by screws 7 and nuts 9.

[0038] Next, the operation and effects of the terminal 10 and the substrate structure 100 according to this embodiment will be described.

[0039] The terminal 10 according to this embodiment includes a first stress relief portion 12 provided at one end of the main body portion 11 in a second direction perpendicular to the first direction through which the hole portion 17 penetrates, and a first mounting portion 14 connected to the first stress relief portion 12 and mounted on the substrate 3. The terminal 10 also includes a second stress relief portion 13 provided on the main body portion 11, spaced apart from the first stress relief portion 12 in the other direction in the second direction, and a second mounting portion 16 connected to the second stress relief portion 13 and mounted on the substrate 3. Due to the positional relationship of the first mounting portion 14 and the second mounting portion 16, the terminal 10 can be mounted on the substrate in a stable state by both mounting portions 14 and 16. Therefore, when attaching the terminal 10 to the substrate 3, soldering by the SMT process is possible. Furthermore, stress relief portions 12 and 13 are provided between each mounting portion 14 and 16 and the main body portion 11. Therefore, when the busbar 20 (another component) is joined to the main body 11 by screw fastening through the hole 17, each stress relief portion 12, 13 can relieve the stress transmitted to each mounting portion 14, 16. As a result, the terminal 10 can be easily mounted on the substrate 3, and the busbar 20 can be joined to the terminal 10 in a stable state.

[0040] The screw seating surface 11a may be positioned at a distance from the first mounting portion 14 and the second mounting portion 16 in the first direction, on the side into which the screw is inserted. In this case, when the terminal 10 is mounted on the substrate 3, the screw seating surface 11a is positioned close to the bus bar 20. Therefore, the terminal 10 can be screwed to the bus bar 20 in a stable state.

[0041] Either the first stress-relieving section 12 or the second stress-relieving section 13 may have a U-shape that curves outward in either direction in the first direction when viewed from a width direction perpendicular to the first direction. In this case, the U-shape allows for efficient stress relief.

[0042] A slit 18 may be formed between the main body 11 and at least one of the first stress relaxation section 12 and the second stress relaxation section 13. In this case, the slit 18 makes the stress relaxation sections 12 and 13 easier to deform, thereby improving the stress relaxation performance.

[0043] The first mounting portion 14 and the second mounting portion 16 may be disposed at positions facing each other with the main body portion 11 interposed therebetween in the second direction. In this case, the first mounting portion 14 and the second mounting portion 16 can mount the main body portion 11 on the substrate 3 in a well-balanced and stable state.

[0044] The substrate structure 100 according to the present embodiment is a substrate structure 100 including the terminal 10 described above and the substrate 3 in which the through hole 6 is formed. The main body portion 11 is disposed in a state of being inserted into the through hole 6, and the screw 7 is inserted into the through hole 6 and the hole portion 17.

[0045] Since the substrate structure 100 includes the terminal 10 described above, the same functions and effects as those of the terminal 10 described above can be obtained. Further, in the substrate structure 100, the main body portion 11 is disposed in a state of being inserted into the through hole 6 of the substrate 3. Further, the screw 7 is inserted into the through hole 6 of the substrate 3 and the hole portion 17 of the main body portion 11. Thereby, the posture of the main body portion 11 can be supported in a state where the mounting portions 14 and 16 are mounted near the edge of the through hole 6. Therefore, the posture of the main body portion 11 inserted into the through hole 6 is stabilized.

[0046] At least one of the first mounting portion 14 and the second mounting portion 16 may be electrically connected to the substrate 3. In this case, the mounting portions 14 and 16 can simultaneously perform stable support of the main body portion 11 and electrical connection to the substrate 3.

[0047] The present disclosure is not limited to the above-described embodiments.

[0048] For example, the above-described terminal 10 is merely an example, and the structure may be changed as appropriate. The arrangements of the second stress relaxation portion 13 and the second mounting portion 16 only need to be spaced apart to the other side in the second direction from the first stress relaxation portion 12, and are not limited to the above-described embodiment. For example, as shown in FIG. 6(a), the second stress relaxation portions 13A and 13B are provided at both ends in the X-axis direction of the main body portion 11. The second stress relaxation portion 13A and the second mounting portion 16A are provided so as to extend to the negative side in the X-axis direction. The second stress relaxation portion 13B and the second mounting portion 16B are provided so as to extend to the positive side in the X-axis direction. Note that the second stress relaxation portions 13A and 13B and the second mounting portions 16A and 16B are arranged on the negative side in the Y-axis direction with respect to the reference line SL2. Further, the configuration shown in FIG. 6(b) may be adopted. In FIG. 6(b), the terminal 10 includes the second stress relaxation portion 13 and the second mounting portion 16 that are line-symmetrical with respect to the first stress relaxation portion 12, the first mounting portion 14, and the reference line SL2. Such a wide second mounting portion 16 is suitable when soldering the second mounting portion 16.

[0049] In the above-described embodiment, the U-shaped portions of the stress relaxation portions 12 and 13 were curved so as to protrude to the positive side in the Z-axis direction. Instead of this, the U-shaped portions of the stress relaxation portions 12 and 13 may be curved so as to protrude to the negative side in the Z-axis direction. For example, a U-shaped curved portion that protrudes to the negative side in the Z-axis direction from the main body portion 11 may be provided, and the end portion of the curved portion may be extended to the positive side in the Z-axis direction and connected to the mounting portion on the surface 3a of the substrate 3.

[0050] [Embodiment 1] A terminal comprising: a main body having a screw seat surface formed with a hole through which a screw can be inserted; a first stress relief portion provided at one end of the main body in a second direction intersecting the first direction through which the hole penetrates; a second stress relief portion provided on the main body, spaced apart from the first stress relief portion toward the other side in the second direction; a first mounting portion connected to the first stress relief portion and mounted on the substrate; and a second mounting portion connected to the second stress relief portion and mounted on the substrate. [Embodiment 2] The terminal according to Embodiment 1, wherein the screw seat surface is positioned spaced apart from the first mounting portion and the second mounting portion toward the side into which the screw is inserted in the first direction. [Embodiment 3] The terminal according to Embodiment 1 or 2, wherein either the first stress relief portion or the second stress relief portion has a U-shape that curves so as to protrude toward either side in the first direction when viewed from a width direction perpendicular to the first direction. [Form 4] A terminal according to any one of Forms 1 to 3, wherein a slit is formed between the main body and at least one of the first stress relief portion and the second stress relief portion. [Form 5] A terminal according to any one of Forms 1 to 4, wherein the first mounting portion and the second mounting portion are positioned opposite each other with the main body portion in between in the second direction. [Form 6] A substrate structure comprising a terminal according to any one of Forms 1 to 5 and a substrate having a through hole formed therein, wherein the main body portion is positioned inserted into the through hole, and the screw is inserted into the through hole and the hole portion. [Form 7] A substrate structure according to Form 6, wherein at least one of the first mounting portion and the second mounting portion is electrically connected to the substrate.

[0051] 1...Power supply unit, 2...Base plate, 3...Circuit board, 4...Lid, 6...Through hole, 7...Screw, 8...Washer, 9...Nut, 10...Terminal, 11...Main body, 12...First stress relief section, 13...Second stress relief section, 14...First mounting section, 16...Second mounting section, 17...Hole, 18...Slit, 20...Bus bar, 20...Bus bar, 100...Circuit board structure.

Claims

1. A terminal comprising: a main body having a screw seat surface with a hole through which a screw can be inserted; a first stress relief portion provided at one end of the main body in a second direction intersecting a first direction through which the hole penetrates; a second stress relief portion provided on the main body, spaced apart from the first stress relief portion toward the other side in the second direction; a first mounting portion connected to the first stress relief portion and mounted on the substrate; and a second mounting portion connected to the second stress relief portion and mounted on the substrate.

2. The terminal according to claim 1, wherein the screw seating surface is positioned at a distance from the first mounting portion and the second mounting portion in the first direction, on the side into which the screw is inserted.

3. The terminal according to claim 1, wherein either the first stress relief portion or the second stress relief portion has a U-shape that curves so as to protrude toward either side in the first direction when viewed from a width direction perpendicular to the first direction.

4. The terminal according to claim 1, wherein a slit is formed between the main body and at least one of the first stress relief portion and the second stress relief portion.

5. The terminal according to claim 1, wherein the first mounting portion and the second mounting portion are positioned opposite each other in the second direction, with the main body portion in between.

6. A substrate structure comprising a terminal as described in any one of claims 1 to 5, and a substrate having a through hole formed therein, wherein the main body is positioned inserted into the through hole, and the screw is inserted into the through hole and the hole portion.

7. The substrate structure according to claim 6, wherein at least one of the first mounting portion and the second mounting portion is electrically connected to the substrate.

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