Electric equipment

Abstract

To miniaturize electric equipment.SOLUTION: Electric equipment 10 is provided, having: a case 11; an electronic component 16 having a terminal and disposed inside the case 11; and a bus bar 26 disposed inside the case 11 and laser-welded to a terminal 16A of the electronic component 16. The terminal 16A of the electronic component 16 overlaps with the bus bar 26. The case 11 has an opening 28 from which both or either of the terminal 16A of the electronic component 16 and the bus bar 26 expose or exposes to the outside of the case 11. The case 11 includes: a first sandwiching portion 30 which comes in contact with one of the terminal 16A of the electronic component 16 and the bus bar 26; and a second sandwiching portion 32 which comes in contact with the other of the terminal 16A of the electronic component 16 and the bus bar 26. The terminal 16A of the electronic component 16 and the bus bar 26 are sandwiched by the first sandwiching portion 30 and the second sandwiching portion 32, and the relative positions of the terminal 16A and the bus bar 26 are consequently held.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to electrical devices. [Background technology]

[0002] Conventionally, an electric device described in JP 2018-206601 A is known. This electric device includes a base member, an electronic component disposed on the base member, and a bus bar connected to a terminal of the electronic component. The terminal of the electronic component and the bus bar are electrically connected by being fastened with a bolt. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-206601 A Summary of the Invention [Problem to be solved by the invention]

[0004] As a means for connecting the terminals of the electronic component and the bus bar, for example, laser welding is considered. When the terminals of the electronic component and the bus bar are laser welded, the terminals of the electronic component and the bus bar are held so as not to be misaligned. Therefore, a dedicated jig may be used to hold the relative positions of the terminals of the electronic component and the bus bar.

[0005] In recent years, there has been a demand for miniaturization of electrical devices. In order to miniaturize electrical devices, it is necessary to arrange electronic components on a circuit board at high density. However, this causes a problem in that the gaps between multiple electronic components arranged in an electrical device become relatively narrow, making it difficult to provide sufficient space for arranging a jig for holding the terminals and bus bars of the electronic components.

[0006] The present disclosure has been completed in light of the above circumstances, and has an object to provide a miniaturized electrical device. [Means for solving the problem]

[0007] The present disclosure relates to an electrical device comprising: a case; an electronic component disposed within the case and having a terminal; and a bus bar disposed within the case and laser welded to the terminal of the electronic component, wherein the terminal of the electronic component and the bus bar overlap, the case has an opening through which the terminal of the electronic component and / or the bus bar are exposed to the outside of the case, the case has a first clamping portion that contacts the terminal of the electronic component and one of the bus bar, and a second clamping portion that contacts the terminal of the electronic component and the other of the bus bar, and the relative positions of the terminal of the electronic component and the bus bar are maintained by being clamped between the first clamping portion and the second clamping portion. Effect of the Invention

[0008] According to the present disclosure, electrical equipment can be made smaller. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is an exploded perspective view showing an electric device according to a first embodiment. [Diagram 2] FIG. 2 is a perspective view showing an electric device. [Diagram 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 4 is a partially enlarged perspective view showing the opening of the upper case. [Diagram 5] FIG. 5 is a partially cutaway perspective view showing a protrusion provided on the upper case. [Figure 6] FIG. 6 is a partially enlarged perspective view showing the connection structure between the terminals of the fuse and the connection portions of the bus bars. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. [Figure 8] FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described.

[0011] (1) An electrical device according to the present disclosure comprises a case, an electronic component disposed within the case and having a terminal, and a busbar disposed within the case and laser welded to the terminal of the electronic component, wherein the terminal of the electronic component and the busbar overlap, the case has an opening through which the terminal of the electronic component and / or the busbar are exposed to the outside of the case, the case has a first clamping portion that contacts the terminal of the electronic component and one of the busbar, and a second clamping portion that contacts the terminal of the electronic component and the other of the busbar, and wherein the relative positions of the terminal of the electronic component and the busbar are maintained by being clamped between the first clamping portion and the second clamping portion.

[0012] The terminals of the electronic component and the busbar are clamped by a first clamping portion and a second clamping portion provided on the case, thereby maintaining their relative positions. This allows the terminals of the electronic component and the busbar to be laser welded together by irradiating the terminals of the electronic component or the busbar with laser light from the opening of the case. According to the present disclosure, no jig is needed to maintain the relative positions of the terminals of the electronic component and the busbar, and therefore no space needs to be provided for arranging the jig. As a result, the electrical device can be made smaller.

[0013] (2) It is preferable that the first clamping portion or the second clamping portion has a recess on a surface facing the terminal of the electronic component or the bus bar.

[0014] When the terminals of an electronic component and the bus bar are laser welded together, even if the laser light penetrates the terminals and the bus bar of the electronic component, the first clamping portion or the second clamping portion is provided with a recess, thereby preventing the first clamping portion or the second clamping portion from being damaged by the laser light.

[0015] (3) It is preferable that the case has a lower case to which the electronic components are attached and an upper case that covers the electronic components by being attached to the lower case, and that the upper case has the first clamping portion and the lower case has the second clamping portion.

[0016] By simply assembling the lower case and the upper case, the terminals of the electronic component and the bus bars can be clamped by the first clamping portion and the second clamping portion.

[0017] (4) It is preferable that the upper case has an upper wall covering the electronic components, the lower case has a bottom wall in which the electronic components are arranged, the upper wall of the upper case has accommodating protrusions at positions corresponding to the electronic components, the accommodating protrusions protruding in a direction away from the bottom wall of the lower case and in which the electronic components are individually accommodated, the first clamping portion being provided on the accommodating protrusion of the upper case and the second clamping portion being provided on the bottom wall of the lower case.

[0018] Since the electronic components are individually accommodated in the accommodating protrusions provided on the upper case, the upper case can be made smaller than in a case in which the electronic components are collectively covered by the upper case, thereby making it possible to reduce the size of the electrical device as a whole.

[0019] (5) It is preferable that the opening is provided in the accommodating protrusion of the upper case, and the accommodating protrusion of the upper case has a protrusion, near a hole edge of the opening, that protrudes toward the terminal or the bus bar of the electronic component and abuts against the terminal or the bus bar of the electronic component.

[0020] Since the terminals or bus bars of the electronic component are pressed by the protrusions, the relative positional deviation between the terminals of the electronic component and the bus bars is further suppressed.

[0021] (6) It is preferable that the upper case has a slit extending along the hole edge of the opening, and the protrusion is provided in the area between the hole edge of the opening and the hole edge of the slit.

[0022] The region between the slit and the edge of the opening of the upper case elastically deforms, so that the protrusion is pressed against the terminal or the bus bar of the electronic component, thereby making it possible to further suppress relative positional deviation between the terminal of the electronic component and the bus bar while complying with the tolerances set for the terminal of the electronic component and the tolerances set for the bus bar.

[0023] (7) It is preferable that the upper case is attached to the lower case along an attachment direction, a normal to a plate surface of the terminal of the electronic component is perpendicular to the attachment direction, a normal to a plate surface of the bus bar is perpendicular to the attachment direction, and the first clamping portion and the second clamping portion are adapted to be assembled to the terminal of the electronic component and the bus bar from the attachment direction.

[0024] By simply assembling the lower case and the upper case, the terminals of the electronic component and the bus bars can be clamped by the first clamping portion and the second clamping portion.

[0025] [Details of the embodiment of the present disclosure] The present disclosure will be described below with reference to the embodiments. The present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims.

[0026] <Embodiment 1> A first embodiment of the present disclosure will be described with reference to Figs. 1 to 8. An electric device 10 according to this embodiment is mounted on a vehicle (not shown) such as an electric vehicle or a hybrid vehicle, and turns on and off a current supplied from a power source (not shown). In the following description, the direction indicated by the arrow Z is the upward direction, the direction indicated by the arrow Y is the forward direction, and the direction indicated by the arrow X is the leftward direction as viewed from the forward direction of the arrow Y. Also, for multiple identical members, only some of the members may be labeled with reference numerals, and the reference numerals may be omitted for the other members.

[0027] [Electrical Equipment 10] 1, an electric device 10 includes a case 11 and electronic components 16 disposed within the case 11. The case 11 has a lower case 12 disposed on the lower side, and an upper case 13 attached to the upper side of the lower case 12. The upper case 13 is adapted to be attached to the lower case 12 from above (an example of an attachment direction).

[0028] The lower case 12 is made of insulating synthetic resin and is formed to open upward. The lower case 12 has a rectangular shape when viewed from above. The lower case 12 has a bottom wall 14 and a storage wall 15 extending upward from an upper surface of the bottom wall 14. An electronic component 16 is stored in a space surrounded by the bottom wall 14 and the storage wall 15.

[0029] Upper case 13 is made of insulating synthetic resin and is formed to open downward. Upper case 13 is formed to be slightly larger than the outer shape of lower case 12. Upper case 13 has a top wall 17 and a side wall 18 extending downward from a side edge of top wall 17. When lower case 12 and upper case 13 are assembled, side wall 18 of upper case 13 is located outside bottom wall 14 of lower case 12.

[0030] The upper wall 17 of the upper case 13 is formed with a storage protrusion 19 that protrudes upward and has a shape following the shape of the electronic component 16 at a position corresponding to the electronic component 16 attached to the lower case 12. As shown in Fig. 2, the electronic component 16 is individually stored in the storage protrusion 19. The storage protrusion 19 is formed with a plurality of slits 20 arranged at intervals, thereby communicating the inside and outside of the case 11. As a result, heat generated in the electronic component 16 when a current flows through the electronic component 16 is dissipated to the outside of the case 11 through the slits 20.

[0031] As shown in Fig. 1, a plurality of locking protrusions 21 protrude outward from the side surface of the bottom wall 14 of the lower case 12. Lock receiving portions 22 that elastically engage with the locking protrusions 21 are formed on the side wall 18 of the upper case 13 at positions corresponding to the locking protrusions 21 of the lower case 12. As shown in Fig. 3, the locking protrusions 21 and the lock receiving portions 22 elastically engage with each other, so that the lower case 12 and the upper case 13 are assembled together.

[0032] [Electronic Components 16] 1, the electronic components 16 have terminals 16A. The electronic components 16 attached to the lower case 12 include a relay 23 and a fuse 24.

[0033] The relay 23 is electrically connected to a power source and turns on and off the current supplied from the power source. The relay 23 has a terminal (one example of the terminal 16A) not shown. The relay 23 has a rectangular parallelepiped shape. A partition wall 25 extending in the vertical direction is formed to protrude from one side of the relay 23. On the side wall 18 of the side walls 18 of the relay 23 on which the partition wall 25 is provided, terminals made of a metal plate are provided on both sides of the partition wall 25. The partition wall 25 provided between the two terminals sets the creepage distance between the two terminals. The normal line of the terminal of the relay 23 is perpendicular to the vertical direction. Note that perpendicular to the vertical direction includes a case where the normal line is perpendicular to the vertical direction, and also includes a case where the normal line is not perpendicular to the vertical direction but can be recognized as being substantially perpendicular. The terminal of the relay 23 and the bus bar 26 are laser-welded to each other, so that the terminal and the bus bar 26 are electrically connected to each other.

[0034] When a current larger than a predetermined current flows through the fuse 24, the fuse 24 melts. This prevents overcurrent from flowing from the power source. The fuse 24 has a cylindrical shape extending in the front-rear direction as a whole. A terminal 24A (an example of the terminal 16A) extending forward is formed from the front end of the fuse 24, and a terminal 24A (an example of the terminal 16A) extending rearward is formed from the rear end of the fuse 24. The terminal 24A of the fuse 24 is made of a metal plate and has a rectangular shape when viewed from the left-right direction. The normal line of the terminal 24A of the fuse 24 is perpendicular to the up-down direction. The terminal 24A and the bus bar 26 are laser-welded to each other, thereby electrically connecting the terminal 24A and the bus bar 26.

[0035] [Busbar 26] 1, a plurality of bus bars 26 are disposed in lower case 12. Bus bars 26 are fixed to lower case 12 by a known method such as press fitting, adhesion, screw fastening, or heat fusion. Bus bars 26 are formed by pressing a conductive metal plate into a predetermined shape. The metal constituting bus bars 26 may be any metal such as copper or a copper alloy.

[0036] The bus bar 26 overlaps with the terminal of the relay 23 and the terminal 24A of the fuse 24. The bus bar 26 has connection portions 26A that are connected to the terminal of the relay 23 and the terminal 24A of the fuse 24, respectively. The bus bar 26 is disposed in the lower case 12 such that the normal line of the connection portion 26A of the bus bar 26 is perpendicular to the up-down direction. The terminal of the relay 23 and the terminal 24A of the fuse 24 are laser welded to the connection portion 26A of the bus bar 26. A weld mark 27 is formed on the bus bar 26A by laser welding. The shape of the weld mark 27 is not particularly limited, but in this embodiment, it is formed in a substantially circular shape.

[0037] [Positioning structure between terminal 16A of electronic component 16 and bus bar 26] 2, an opening 28 penetrating accommodating protrusion 19 is formed in accommodating protrusion 19 of upper case 13 at a position corresponding to connection portion 26A of bus bar 26. Connection portion 26A of bus bar 26 is exposed to the outside of case 11 from the inside of the hole edge of opening 28. The shape of the hole edge of opening 28 is not particularly limited, but in this embodiment, it is rectangular.

[0038] In the following description, terminal 24A of fuse 24 and connection portion 26A of bus bar 26 overlapped on terminal 24A of fuse 24 will be taken as examples. For the terminal of relay 23 and connection portion 26A of bus bar 26 overlapped on terminal 24A of relay 23, similar members are given the same reference numerals and duplicated description will be omitted.

[0039] As shown in Fig. 4, the housing protrusion 19 of the upper case 13 has a slit 29 extending in the vertical direction formed at a position slightly forward and rearward away from the edge of the opening 28. The area of ​​the housing protrusion 19 of the upper case 13 defined by the edge of the opening 28 and the slit 29 is defined as a first clamping portion 30. The first clamping portion 30 is formed to be elongated and extend in the vertical direction. The first clamping portion 30 is formed as a double-supported spring that is elastically deformable in the left-right direction. The first clamping portion 30 is formed on both the front and rear sides of the opening 28.

[0040] 5, first clamping portion 30 has a protrusion 31 that protrudes toward connection portion 26A of bus bar 26, near the center in the up-down direction, on a surface facing connection portion 26A of bus bar 26. When upper case 13 is assembled to lower case 12, the tip of protrusion 31 abuts connection portion 26A of bus bar 26 from the right.

[0041] 6, a wall-shaped second clamping portion 32 that protrudes upward is provided on the upper surface of the bottom wall 14 of the lower case 12 at a position corresponding to the terminal 24A of the fuse 24. The second clamping portion 32 is adapted to come into contact with the terminal 24A of the fuse 24 from the left.

[0042] As shown in Figure 7, the second clamping portion 32 abuts against the terminal 24A of the fuse 24 from the left, and the first clamping portion 30 abuts against the connection portion 26A of the bus bar 26 that overlaps the terminal 24A of the fuse 24 from the right, so that the terminal 24A of the fuse 24 and the connection portion 26A of the bus bar 26 are clamped by the second clamping portion 32 and the first clamping portion 30.

[0043] 8, when the protrusion of first clamping portion 30 abuts against connection portion 26A of busbar 26 from the right, first clamping portion 30 is configured to bend and deform so as to bulge to the right. This causes connection portion 26A of busbar 26 to be pressed toward terminal 24A of fuse 24. This prevents terminal 24A of fuse 24 and connection portion 26A of busbar 26 from being misaligned relative to each other.

[0044] 7, a recess 33 recessed in a direction away from the terminal 24A of the fuse 24 is formed on a surface of the second clamping portion 32 facing the terminal 24A of the fuse 24. In the portion of the second clamping portion 32 where the recess 33 is formed, the second clamping portion 32 and the terminal 24A of the fuse 24 are separated from each other.

[0045] [Example of manufacturing process for electrical device 10] Next, a description will be given of an example of a manufacturing process for the electric device 10. The manufacturing process for the electric device 10 is not limited to the following description.

[0046] Electronic components 16 such as relays 23 and fuses 24 are fixed to the top surface of lower case 12. Next, bus bar 26 is fixed to the top surface of lower case 12. In this state, the terminals of relays 23 and connection portions 26A of bus bar 26 overlap, and terminals 24A of fuse 24 and connection portions 26A of bus bar 26 overlap.

[0047] The upper case 13 is assembled to the lower case 12 from above. The lower end of the lock receiving portion 22 of the upper case 13 abuts against the lock protrusion 21 of the lower case 12 from above, causing the lock receiving portion 22 to elastically deform. The upper case 13 is further pressed downward, causing the lock receiving portion 22 to climb over the lock protrusion 21 and return to its original deformation. This causes the lock receiving portion 22 to abut against the lock protrusion 21 from below. This fixes the upper case 13 to the lower case 12.

[0048] With the lower case 12 and the upper case 13 assembled, the tip of the protrusion 31 provided on the first clamping portion 30 of the upper case 13 abuts against the terminal 24A of the fuse 24 from the right. Also, the second clamping portion 32 of the lower case 12 abuts against the terminal 24A of the fuse 24 from the left. As a result, the terminal 24A of the fuse 24 and the connection portion 26A of the bus bar 26 are clamped by the first clamping portion 30 and the second clamping portion 32.

[0049] Laser light is irradiated from an irradiation device (not shown) through opening 28 of upper case 13. As a result, terminal 24A of fuse 24 and connection portion 26A of bus bar 26 are laser welded together. Weld mark 27 is formed on connection portion 26A of bus bar 26. As a result, terminal 24A of fuse 24 and connection portion 26A of bus bar 26 are electrically connected to each other.

[0050] The terminals of the relays 23 and the connection portions 26A of the bus bars 26 are also laser welded in the same manner as above, and therefore a duplicated description will be omitted. With the above, the electric device 10 is completed.

[0051] [Effects of the embodiment] Next, the effects of the present embodiment will be described. The electric device 10 according to the present embodiment includes a case 11, an electronic component 16 disposed in the case 11 and having a terminal, and a bus bar 26 disposed in the case 11 and laser-welded to a terminal 16A of the electronic component 16, the terminal 16A of the electronic component 16 overlaps with the bus bar 26, the case 11 has an opening 28 through which both or one of the terminal 16A of the electronic component 16 and the bus bar 26 are exposed to the outside of the case 11, the case 11 has a first clamping portion 30 that contacts the terminal 16A of the electronic component 16 and one of the bus bar 26, and a second clamping portion 32 that contacts the terminal 16A of the electronic component 16 and the other of the bus bar 26, and the relative positions of the terminal 16A of the electronic component 16 and the bus bar 26 are maintained by being clamped between the first clamping portion 30 and the second clamping portion 32.

[0052] The terminal 16A of the electronic component 16 and the bus bar 26 are clamped by a first clamping portion 30 and a second clamping portion 32 provided on the case 11, thereby maintaining the relative positions. As a result, the terminal 16A of the electronic component 16 and the bus bar 26 can be laser-welded by irradiating the terminal 16A of the electronic component 16 or the bus bar 26 with laser light from an opening 28 of the case 11. According to the present disclosure, a jig for maintaining the relative positions of the terminal 16A of the electronic component 16 and the bus bar 26 is not required, and therefore there is no need to provide a space for arranging the jig. As a result, the electric device 10 can be made smaller in size.

[0053] Further, according to this embodiment, the second clamping portion 32 has a recess 33 on a surface facing the terminal 16A of the electronic component 16.

[0054] When the terminal 16A of the electronic component 16 and the bus bar 26 are laser welded together, even if the laser light penetrates the terminal 16A of the electronic component 16 and the bus bar 26, the second clamping portion 32 is provided with a recess 33, thereby preventing the second clamping portion 32 from being damaged by the laser light.

[0055] According to this embodiment, case 11 has a lower case 12 to which electronic components 16 are attached, and an upper case 13 that covers the electronic components 16 by being attached to the lower case 12, the upper case 13 having a first clamping portion 30, and the lower case 12 having a second clamping portion 32.

[0056] By the simple operation of assembling lower case 12 and upper case 13 together, terminal 16A and bus bar 26 of electronic component 16 can be clamped by first clamping portion 30 and second clamping portion 32.

[0057] According to this embodiment, the upper case 13 has a top wall 17 that covers the electronic components 16, the lower case 12 has a bottom wall 14 on which the electronic components 16 are arranged, and the top wall 17 of the upper case 13 is provided with accommodating protrusions 19 at positions corresponding to the electronic components 16, which protrude in a direction away from the bottom wall 14 of the lower case 12 and accommodate the electronic components 16 individually, a first clamping portion 30 is provided on the accommodating protrusion 19 of the upper case 13, and a second clamping portion 32 is provided on the bottom wall 14 of the lower case 12.

[0058] Since the electronic components 16 are individually accommodated in the accommodating protrusions 19 provided on the upper case 13, the upper case 13 can be made smaller than when the electronic components 16 are collectively covered by the upper case 13. This allows the electrical device 10 to be made smaller overall.

[0059] According to this embodiment, the opening 28 is provided in the accommodating protrusion 19 of the upper case 13, and the accommodating protrusion 19 of the upper case 13 has a protrusion 31 at a position near the hole edge of the opening 28 that protrudes toward the terminal 16A or the bus bar 26 of the electronic component 16 and abuts against the terminal 16A or the bus bar 26 of the electronic component 16.

[0060] Since the terminals 16A of the electronic component 16 or the bus bars 26 are pressed by the protrusions 31, the relative positional deviation between the terminals 16A of the electronic component 16 and the bus bars 26 is further suppressed.

[0061] According to this embodiment, the upper case 13 has a slit 29 extending along the edge of the opening 28, and a protrusion 31 is provided in the area between the edge of the opening 28 and the edge of the slit 29.

[0062] The region between the edge of the opening 28 of the upper case 13 and the slit 29 is elastically deformed, whereby the protrusion 31 is pressed against the terminal 16A of the electronic component 16 or the bus bar 26. This makes it possible to accommodate the tolerance of the terminal 16A of the electronic component 16 and the tolerance of the bus bar 26, while further suppressing the relative positional deviation between the terminal 16A of the electronic component 16 and the bus bar 26.

[0063] According to this embodiment, the upper case 13 is adapted to be attached to the lower case 12 along the attachment direction, the normal to the plate surface of the terminal 16A of the electronic component 16 is perpendicular to the attachment direction, the normal to the plate surface of the bus bar 26 is perpendicular to the attachment direction, and the first clamping portion 30 and the second clamping portion 32 are adapted to be assembled to the terminal 16A of the electronic component 16 and the bus bar 26 from the attachment direction.

[0064] By the simple operation of assembling lower case 12 and upper case 13 together, terminal 16A and bus bar 26 of electronic component 16 can be clamped by first clamping portion 30 and second clamping portion 32.

[0065] <Other embodiments> (1) The opening 28 may be provided in the lower case 12.

[0066] (2) The recess 33 may be omitted.

[0067] (3) The slit 20 formed in the receiving protrusion 19 may be omitted.

[0068] (4) The protrusion 31 may be elongated and extend in the up-down direction over the entire length of the first clamping portion 30. Furthermore, a plurality of protrusions 31 may be provided on the first clamping portion 30.

[0069] (5) The terminals 16A of the electronic components 16 may be arranged so as to be exposed to the outside. In this case, the first clamping portion 30 may be configured to abut against the terminals 16A of the electronic components 16, and the second clamping portion 32 may be configured to abut against the connection portions 26A of the bus bars 26.

[0070] (6) The first clamping portion 30 and the second clamping portion 32 may both be provided on the lower case 12, or may both be provided on the upper case 13.

[0071] (7) The shape of the edge of the opening 28 may be any shape, including a polygonal shape such as a triangular shape, a pentagonal shape, or a hexagonal shape, or a circular shape or an oval shape. [Explanation of symbols]

[0072] 10: Electrical Equipment 11: Case 12: Lower case 13: Upper Case 14: Bottom wall 15: Containment Wall 16: Electronic Components 16A, 24A: Terminal 17: Upper wall 18: Side wall 19: Storage protrusion 20: Slit 21: Lock protrusion 22: Lock receiving part 23: Relay 24: Fuse 25: Partition wall 26: Busbar 26A: Connection 27: Weld marks 28: Opening 29: Slit 30: First clamping part 31: Protrusion 32: Second clamping part 33: Recess

Claims

1. Case and an electronic component disposed in the case and having a terminal; a bus bar disposed in the case and laser-welded to the terminal of the electronic component; The terminal of the electronic component and the bus bar overlap each other, the case has an opening, and the terminals and / or the bus bars of the electronic component are exposed to the outside of the case through the opening; the case has a first clamping portion that contacts one of the terminals of the electronic component and the bus bar, and a second clamping portion that contacts the other of the terminals of the electronic component and the bus bar, An electrical device in which the relative positions of the terminals of the electronic component and the bus bars are maintained by being clamped between the first clamping portion and the second clamping portion.

2. The electrical device according to claim 1 , wherein the first clamping portion or the second clamping portion has a recess on a surface facing a terminal of the electronic component or the bus bar.

3. the case includes a lower case to which the electronic component is attached, and an upper case that is attached to the lower case to cover the electronic component, 3. The electrical device according to claim 1, wherein the upper case has the first clamping portion, and the lower case has the second clamping portion.

4. the upper case has a top wall that covers the electronic components, the lower case has a bottom wall on which the electronic components are disposed, the top wall of the upper case is provided with accommodating protrusions at positions corresponding to the electronic components, the accommodating protrusions protruding in a direction away from the bottom wall of the lower case and accommodating the electronic components individually; The electric device according to claim 3 , wherein the first clamping portion is provided on the housing protrusion of the upper case, and the second clamping portion is provided on the bottom wall of the lower case.

5. the opening is provided in the receiving protrusion of the upper case, 5. The electrical device according to claim 4, wherein the accommodating protrusion of the upper case has a protrusion at a position near the hole edge of the opening that protrudes toward the terminal or the bus bar of the electronic component and abuts against the terminal or the bus bar of the electronic component.

6. the upper case has a slit extending along the hole edge of the opening, The electrical device according to claim 5 , wherein the protrusion is provided in a region between the hole edge of the opening and the hole edge of the slit.

7. The upper case is adapted to be attached to the lower case along an attachment direction, a normal line of a plate surface of the terminal of the electronic component is perpendicular to the mounting direction; a normal line of a plate surface of the bus bar is perpendicular to the mounting direction; The electric device according to claim 3 , wherein the first clamping portion and the second clamping portion are adapted to be attached to the terminal of the electronic component and the bus bar from the attachment direction.

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