Electronic device

Abstract

The electronic equipment (1) comprises a plate-shaped base (21), a capacitor (C1), a first plate-shaped component (41), one or more second plate-shaped components (42) and a fixing component. The capacitor (C1) is attached to the first plate-like member (41). The second plate-like member (42) is provided between the first plate-like member (41) and the base (21), and forms a through-hole through which the power supply container (C1) is inserted. The fixing member fixes the first plate-like member (41) to the second plate-like member (42) and fixes the second plate-like member (42) to the base (21).

Description

Technical Field

[0001] The present disclosure relates to electronic devices. Background Art

[0002] Electronic devices, such as propulsion control devices and power conversion devices mounted on railway vehicles, include a housing that houses multiple electronic components. Patent Document 1 discloses an example of such an electronic device. The power conversion device disclosed in Patent Document 1, as an example of an electronic device, includes a substrate mounted on the housing, a semiconductor module mounted on the substrate, a capacitor mounted on the substrate, and a busbar electrically connecting the capacitor terminals to the semiconductor module.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2002-252327 Utility Model Content

[0006] Technical problems to be solved by the utility model

[0007] A general-purpose capacitor has a cylindrical housing that houses the capacitor element and is closed at both ends. Terminals are provided on one end of the housing, while other components, such as a mounting portion for securing the capacitor to a substrate, are formed on the other end. This general-purpose capacitor is sometimes used as a capacitor in the power conversion device disclosed in Patent Document 1.

[0008] To prevent the capacitor from vibrating due to vibration during railroad vehicle operation, the capacitor is secured to the base using a fixing member attached to the mounting portion, with the mounting portion facing the base. This requires installing busbars that electrically connect the capacitor terminals to the semiconductor modules mounted on the substrate, bypassing the fixing member and other electronic components. This complicates the structure of the power conversion device.

[0009] On the other hand, to minimize the structural complexity of the power conversion device by arranging busbars along the substrate, if the capacitor is mounted on the base with its terminals facing the substrate, the distance from the base to the mounting portion becomes longer. Consequently, the capacitor vibrates due to the vibrations of the railway vehicle. This problem is not limited to power conversion devices; it can also occur in electronic devices equipped with capacitors and installed in environments subject to vibration.

[0010] The present disclosure has been made in view of the above circumstances, and an object of the present disclosure is to provide an electronic device having a simple structure that suppresses vibration of a capacitor.

[0011] Technical means for solving technical problems

[0012] In order to achieve the above-mentioned purpose, the electronic device disclosed in the present invention includes a plate-shaped base, a capacitor, a first plate-shaped member, one or more second plate-shaped members and a fixing member. The capacitor includes a capacitor element, a shell having a cylindrical shape with both ends closed and accommodating the capacitor element, a plurality of terminals electrically connected to the capacitor element and exposed to the outside from one end face of the shell facing the base, and a mounting portion provided on the outer surface of the shell. The capacitor is mounted on the first plate-shaped member using the mounting portion. The second plate-shaped member is provided between the first plate-shaped member and the base to form a through hole for the capacitor to pass through. The fixing member fixes the first plate-shaped member to any one of the second plate-shaped members, and fixes the one or more second plate-shaped members to the base.

[0013] Utility model effect

[0014] The electronic device disclosed herein includes: a first plate-shaped member having a plurality of capacitors mounted thereon, the plurality of terminals of which are directed toward a base; and a fixing member that fixes the first plate-shaped member to any one of the second plate-shaped members and, in turn, fixes the second plate-shaped member to the base. The capacitor is fixed to the base via the first plate-shaped member, the second plate-shaped member, and the fixing member, thereby suppressing vibration of the capacitor. Since the plurality of terminals of the capacitor are directed toward the base, the configuration path of the busbars connecting the terminals to the electronic components mounted on the base is prevented from becoming complicated, thereby simplifying the structure of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a circuit diagram of the electronic device according to the first embodiment.

[0016] Figure 2 It is a cross-sectional view of the capacitor according to the first embodiment.

[0017] Figure 3 It is a cross-sectional view of the electronic device according to the first embodiment.

[0018] Figure 4 The electronic device according to the first embodiment Figure 3 Cross-sectional view taken along line IV-IV in FIG.

[0019] Figure 5 The electronic device according to the first embodiment Figure 4 Cross-sectional view taken along line VV in FIG.

[0020] Figure 6 The electronic device according to the first embodiment Figure 3 Cross-sectional view at line VI-VI in the figure.

[0021] Figure 7 The electronic device according to the first embodiment Figure 3Cross-sectional view taken along line VII-VI I in FIG.

[0022] Figure 8 It is a cross-sectional view of an electronic device according to the second embodiment.

[0023] Figure 9 It is a cross-sectional view of an electronic device according to the second embodiment.

[0024] Figure 10 It is a cross-sectional view of an electronic device according to a third embodiment.

[0025] Figure 11 The electronic device according to the third embodiment Figure 10 Cross-sectional view taken along line XI-XI in FIG.

[0026] Figure 12 The electronic device according to the third embodiment Figure 10 Cross-sectional view taken along line XII-XII in FIG.

[0027] Figure 13 It is a cross-sectional view of an electronic device according to a fourth embodiment.

[0028] Figure 14 The electronic device according to the fourth embodiment Figure 13 Cross-sectional view taken along line XIV-XIV in FIG.

[0029] Figure 15 It is a cross-sectional view of a first modified example of the electronic device according to the embodiment.

[0030] Figure 16 The first modification of the electronic device according to the embodiment is Figure 15 Cross-sectional view taken along line XVI-XVI in FIG.

[0031] Figure 17 It is a cross-sectional view of a second modified example of the electronic device according to the embodiment.

[0032] Figure 18 It is a cross-sectional view of a third modified example of the electronic device according to the embodiment.

[0033] Figure 19 The third modification of the electronic device according to the embodiment is Figure 18 Cross-sectional view taken along the XIX-XIX line in FIG.

[0034] Figure 20 It is a cross-sectional view of a fourth modified example of the electronic device according to the embodiment. DETAILED DESCRIPTION

[0035] Hereinafter, the electronic device according to the embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.

[0036] (Implementation 1)

[0037] As an example of an electronic device, a DC-to-three-phase converter is provided. This converter is mounted on a railway vehicle and converts DC power supplied from a DC power source into AC power for supply to a load device, and then supplies the converted AC power to the load device. The electronic device 1 according to Embodiment 1 will be described using the DC-to-three-phase converter as an example.

[0038] Figure 1 The electronic device 1 shown is mounted on a DC-fed railway vehicle and converts the supplied DC power into AC power for supplying to a load device 71. The load device 71 is, for example, a three-phase induction motor that generates propulsion force for the railway vehicle.

[0039] The electronic device 1 includes: a terminal 1a connected to a power supply via a contactor, a reactor, etc. (not shown); a grounded terminal 1b; a power conversion unit 11 that converts direct current supplied from the power supply into three-phase alternating current and supplies the three-phase alternating current to a load device 71; and a capacitor C1 having its two ends connected to the terminals 1a and 1b.

[0040] Terminal 1a is electrically connected to, for example, a current collector that receives DC power from a substation via a power supply line. The current collector serves as the power source for electronic device 1. The power supply line is, for example, an overhead line or a third rail. The current collector is a pantograph or a collector shoe. Terminal 1b is grounded by short-circuiting to the track via a grounding brush, grounding ring, wheel, or other similar device (not shown).

[0041] The power converter 11 includes three sets of two switching elements 12 connected in series. The three sets of switching elements 12 correspond to the U phase, V phase, and W phase of the three-phase AC power, respectively. The switching element 12 corresponding to the U phase, the switching element 12 corresponding to the V phase, and the switching element 12 corresponding to the W phase are connected in parallel between terminals 1a and 1b.

[0042] A connection point of the two switching elements 12 corresponding to the U phase, a connection point of the two switching elements 12 corresponding to the V phase, and a connection point of the two switching elements 12 corresponding to the W phase are electrically connected to a load device 71 .

[0043] Each switching element 12 includes an IGBT (Insulated Gate Bipolar Transistor) 13 and a freewheeling diode 14 whose anode is connected to the emitter terminal of the IGBT 13 and whose cathode is connected to the collector terminal of the IGBT 13. A gate signal from a control unit (not shown) is supplied to the gate terminal of each IGBT 13 included in the power conversion unit 11, thereby controlling the on and off operation of each switching element 12. Through the switching operation of each switching element 12, the power conversion unit 11 converts DC power into three-phase AC power and supplies the three-phase AC power to the load device 71.

[0044] Capacitor C1 is charged by direct current supplied from a power source and forms an LC filter together with a reactor provided in the circuit between terminal 1 a and the power source, thereby reducing harmonic components generated by switching operation of power converter 11 .

[0045] A general-purpose capacitor is used as capacitor C1. Figure 2 As shown, the capacitor C1 includes a cylindrical shell 60, a plurality of terminals 61 exposed to the outside from one end surface of the shell 60, a mounting portion 62 provided on the other end surface of the shell 60, a capacitor element 63 housed in the shell 60, a lead piece 64 electrically connecting the capacitor element 63 and each terminal 61, and an insulating sealing member 65 blocking the opening of the shell 60.

[0046] Case 60 has a cylindrical shape with one end open, and this open end is sealed by a sealing member 65. In other words, case 60 of capacitor C1 has a cylindrical shape with both ends closed. As an example, case 60 is formed from a cylindrical metal member, such as aluminum. Case 60 is insulated from terminals 61 by sealing members 65.

[0047] In the first embodiment, a two-terminal capacitor is used as the capacitor C1. In other words, the capacitor C1 has two terminals 61. One terminal 61 is connected to the Figure 1 Terminal 1a is electrically connected to switching elements 12 of upper arms of U, V, and W phases of power converter 11. Terminal 61 is electrically connected to terminal 1b and switching elements 12 of lower arms of power converter 11.

[0048] like Figure 2 As shown, the mounting portion 62 is provided on the closed end surface of the housing 60, in other words, on the surface opposite to the surface of the housing 60 provided with the terminals 61. The mounting portion 62 protrudes from the outer surface of the housing 60 in the direction in which the central axis of the housing 60 extends, and is formed as a protrusion after threading.

[0049] Capacitor element 63 includes two electrodes and a dielectric sandwiched between the two electrodes. For example, capacitor element 63 is a thin film capacitor formed by winding a dielectric film forming a positive electrode and a dielectric film forming a negative electrode.

[0050] Each lead piece 64 is formed of a conductor. One lead piece 64 electrically connects one terminal 61 to the positive electrode of the capacitor element 63. The other lead piece 64 electrically connects the other terminal 61 to the negative electrode of the capacitor element 63.

[0051] The sealing member 65 is formed of an insulating member such as rubber or resin, and seals the opening of the housing 60 to insulate the housing 60 from the terminals 61 .

[0052] The following describes the structure of the electronic device 1 having the above structure. Figure 3 As shown, electronic device 1 includes a housing 20 that houses components, bus bars 15 housed in housing 20 and connecting terminals 61 of capacitor C1 to switching element 12, and a plate-shaped base 21 mounted on housing 20. Electronic device 1 also includes a first plate-shaped member 41 on which capacitor C1 is mounted, a second plate-shaped member 42 forming a through-hole through which capacitor C1 is inserted, and a fixing member that fixes first plate-shaped member 41 to second plate-shaped member 42 and then fixes second plate-shaped member 42 to base 21, thereby fixing capacitor C1 to base 21.

[0053] As fixing members, the electronic device 1 includes a plurality of first rod-shaped members 44 whose one ends are attached to the base 21, a plurality of second rod-shaped members 45 whose one ends are respectively inserted through the second plate-shaped member 42 and attached to the first rod-shaped members 44, and a plurality of first fixing parts 46 for attaching the first plate-shaped member 41 to the other ends of each second rod-shaped member 45.

[0054] Preferably, the electronic device 1 further includes a cooling device 30, which is mounted on the base 21 and cools the components of the electronic device 1. Figure 3 In, omitted Figure 1 The terminals 1a and 1b are shown.

[0055] Figure 3 In the diagram, the X-axis extends along the short side of the housing 20, and the Y-axis extends along the long side of the housing 20. The X-axis corresponds to the width of the railway vehicle carrying the electronic device 1, and the Y-axis corresponds to the direction of travel of the railway vehicle. The X-axis, Y-axis, and Z-axis are orthogonal to each other. When the railway vehicle carrying the electronic device 1 is horizontal, the Z-axis represents the vertical direction. This also applies to the following figures.

[0056] The frame 20 is installed under the floor of the railway vehicle. The frame 20 has sufficient rigidity and strength to withstand even the maximum vibrations expected in a railway vehicle. For example, the frame 20 is formed from a metal member such as iron or aluminum. An opening 20a is formed on a surface of the frame 20 that intersects the X-axis.

[0057] The base 21 is detachably mounted on the frame 20 with the first main surface 21a blocking the opening 20a of the frame 20. The base 21 is securely mounted on the frame 20 with a strength sufficient to prevent the relative positional relationship between the base 21 and the frame 20 from changing even when subjected to vibrations during the operation of the railway vehicle. Specifically, the base 21 is mounted on the outer surface of the frame 20 by a mounting method such as fitting, brazing, welding, bonding with an adhesive, or fastening with a fastening member.

[0058] In the first embodiment, the base 21 is a heat-conductive plate-shaped member mounted on the outer surface of the frame 20 in a state where the opening 20a is blocked. At least one electronic component that generates heat when energized is mounted on the first main surface 21a of the base 21. For example, Figure 3 and Figure 3 The cross-sectional view at the IV-IV line in the figure is Figure 4 As shown, six switching elements 21 are mounted on the first main surface 21a of the base 21. Furthermore, the capacitor C1 is fixed to the first main surface 21a of the base 21 by the fixing member.

[0059] The base 21 is preferably formed of a material having a high thermal conductivity, such as a metal such as copper or aluminum, which allows heat to be transferred from the switching element 12 mounted on the first main surface 21 a to the cooling device 30 .

[0060] A cooling device 30 is mounted on the second main surface 21b, which is opposite the first main surface 21a, to dissipate heat transferred from the switching element 12 mounted on the first main surface 21a. With the switching element 12 and capacitor C1 mounted on the first main surface 21a and the cooling device 30 mounted on the second main surface 21b, the base 21 is mounted on the outer surface of the housing 20.

[0061] The cooling device 30 includes a heat pipe 31 mounted on the base 21 and a plurality of fins 32 mounted on the heat pipe 31 with the heat pipe 31 inserted therethrough. The heat pipe 31 includes a main pipe disposed on the base 21 and extending in the Y-axis direction, and branch pipes connected to the main pipe, extending vertically upward away from the base 21. The main pipe 21 is inserted into a groove formed in the base 21 and secured to the base 21 by methods such as adhesive bonding or welding. The branch pipes are attached to the main pipe by methods such as welding and welding and are connected to the main pipe.

[0062] The main pipe and branch pipes forming heat pipe 31 are made of a material with high thermal conductivity, such as copper, aluminum, or other metal. A refrigerant is sealed within heat pipe 31. The refrigerant is a substance, such as water, that vaporizes due to heat transferred from the electronic components and liquefies by dissipating the heat to the air surrounding cooling device 30 through heat pipe 31 and fins 32.

[0063] The fins 32 are formed of flat plate members and are attached to the heat pipes 31 with their main surfaces parallel to the ZY plane. The fins 32 are formed of a material with high thermal conductivity, for example, a metal such as copper or aluminum.

[0064] The bus bar 15 electrically connects at least one of the terminals 61 of the capacitor C1 to at least one of the electronic components mounted on the base 21. Specifically, the bus bar 15 electrically connects one terminal 61 to the switching element 12 of the upper arm of each of the U-phase, V-phase, and W-phase included in the power conversion unit 11, and electrically connects the other terminal 61 to the switching element 12 of the lower arm of each of the U-phase, V-phase, and W-phase included in the power conversion unit 11.

[0065] The bus bar 15 is formed of, for example, a laminated bus bar in which a plurality of conductors and a plurality of insulating layers are laminated. In the first embodiment, the bus bar 15 has a flat plate shape extending along the first main surface 21 a of the base 21 .

[0066] like Figure 3 and Figure 4 As shown, capacitor C1 is mounted on first plate-shaped member 41. Specifically, mounting portion 62 of capacitor C1 is inserted into a through-hole formed in first plate-shaped member 41. With first plate-shaped member 41 and housing 60 in contact, nut 43 is tightened onto mounting portion 62, thereby mounting capacitor C1 on first plate-shaped member 41.

[0067] like Figure 4 As shown, the first plate-shaped member 41 is formed of a plate-shaped member having a square main surface. The first plate-shaped member 41 preferably has sufficient rigidity and strength to withstand the maximum vibration expected of a railway vehicle without deformation. For example, the first plate-shaped member 41 is formed of a metal member such as iron, stainless steel, or aluminum, or a plate-shaped fiber-reinforced plastic, having a thickness of at least 10 mm.

[0068] like Figure 4 The cross-sectional view at line VV in the figure is Figure 5 As shown, an insertion hole 41 a through which the first fixing member 46 is inserted is formed in the first plate-shaped member 41 .

[0069] like Figure 3 and Figure 5 As shown, the second plate-shaped member 42 is provided between the first plate-shaped member 41 and the base 21. Figure 3 The cross-sectional view at the VI-VI line is Figure 6 As shown, a through hole 42a for inserting the capacitor C1 is formed in the second plate-shaped member 42. The edge of the through hole 42a faces the outer peripheral surface of the case 60 with a gap therebetween.

[0070] The second plate-shaped member 42 is formed of a plate-shaped member having a square main surface. The second plate-shaped member 42 preferably has sufficient rigidity and strength to withstand the maximum vibration expected of a railway vehicle without deformation. For example, the second plate-shaped member 42 is formed of a metal member such as iron, stainless steel, or aluminum, or a plate-shaped fiber-reinforced plastic, having a thickness of 10 mm or greater.

[0071] like Figure 5 As shown, an insertion hole 42 b through which the second rod-shaped member 45 is inserted is formed in the second plate-shaped member 42 .

[0072] like Figure 3 The cross-sectional view at line VII-VI I is Figure 7 As shown in FIG. 1 , the electronic device 1 includes four first rod-shaped members 44. Figure 3 and Figure 5 As shown, each first rod-shaped member 44 is a hexagonal prism with a tapered tip at one end. One end of each first rod-shaped member 44 is threaded. A first threaded hole 44a is formed at the other end of each first rod-shaped member 44. The wall surface of the first threaded hole 44a is threaded. Each first rod-shaped member 44 preferably has sufficient rigidity and strength to resist deformation even under the maximum vibrations expected of a railway vehicle. For example, the first rod-shaped member 44 can be formed from a metal member such as iron, stainless steel, or aluminum, or from a fiber-reinforced plastic.

[0073] One end of each first rod-shaped member 44 is screwed into a threaded hole 21 c formed in the base 21 . As one end of each first rod-shaped member 44 is screwed into the hole 21 c , each first rod-shaped member 44 is fixed to the base 21 .

[0074] like Figure 6 As shown in FIG. 1 , the electronic device 1 includes four second rod-shaped members 45. Figure 3 and Figure 5 As shown, similar to the first rod-shaped member 44, each second rod-shaped member 45 is a hexagonal prism with a tapered tip at one end. One end of each second rod-shaped member 45 is threaded. A second threaded hole 45a is formed at the other end of each second rod-shaped member 45. The wall surface of the second threaded hole 45a is threaded. Each second rod-shaped member 45 preferably has sufficient rigidity and strength to resist deformation even under the maximum vibrations expected of a railway vehicle. For example, the second rod-shaped member 45 is formed from a metal member such as iron, stainless steel, or aluminum, or from a fiber-reinforced plastic.

[0075] One end of each second rod-shaped member 45 is inserted into the insertion hole 42b of the second plate-shaped member 42 and is threadedly engaged with the first threaded hole 44a of the first rod-shaped member 44. By attaching the second rod-shaped member 45 to the first rod-shaped member 44 as described above, the second plate-shaped member 42 is fixed to the base 21 via the first rod-shaped member 44.

[0076] like Figure 4 As shown in FIG. 1 , the electronic device 1 includes four first fixing members 46. Figure 5 As shown, the first fixing member 46 is inserted into the insertion hole 41a of the first plate-shaped member 41 and is threadedly engaged with the second threaded hole 45a of the second rod-shaped member 45. By attaching the first fixing member 46 to the second rod-shaped member 45 as described above, the first plate-shaped member 41 is fixed to the base 21 via the second rod-shaped member 45 and the first rod-shaped member 44.

[0077] As described above, capacitor C1 is mounted on base 21 by mutually attaching fixing members. Specifically, capacitor C1 is fixed to base 21 via first plate member 41 , first fixing tool 46 , second rod member 45 , and first rod member 44 .

[0078] When a railway vehicle is traveling, frame 20 attached to the vehicle body vibrates. The vibration is transmitted from frame 20 to capacitor C1 via base 21, first rod-shaped member 44, second rod-shaped member 45, first fixing member 46, and first plate-shaped member 41. The first rod-shaped member 44 vibrates with its other end fixed to base 21 as a fulcrum. The magnitude of the vibration at the other end of first rod-shaped member 44 is proportional to the length of first rod-shaped member 44 in the direction of its extension. The second rod-shaped member 45 vibrates with its other end fixed to first rod-shaped member 44 as a fulcrum. The magnitude of the vibration at the other end of second rod-shaped member 45 is proportional to the length of second rod-shaped member 45 in the direction of its extension.

[0079] The length of each of the first rod-shaped member 44 and the second rod-shaped member 45 in the direction extending from the capacitor mounting portion to the base is shorter than that of a single member fixing the capacitor to the base. Therefore, the vibration of the capacitor C1 included in the electronic device 1 is smaller than that of a capacitor fixed to the base by the above-mentioned single member.

[0080] As described above, in electronic device 1 according to Embodiment 1, capacitor C1 is fixed to base 21 by a fixing member including first rod-shaped member 44, second rod-shaped member 45, and first fixing member 46. Fixing capacitor C1 to base 21 by the fixing member reduces vibration of capacitor C1.

[0081] Capacitor C1 is mounted on base 21 so that each terminal 61 faces base 21. Therefore, the distance between busbars 15 connecting each terminal 61 and each switching element 12 mounted on base 21 can be minimized. Specifically, busbars 15 can be formed into a flat plate shape that extends along first main surface 21a of base 21. This simplifies the installation path of busbars 15 and simplifies the structure of electronic device 1. The shortened distance between busbars 15 reduces the parasitic inductance of busbars 15, further reducing the manufacturing cost of electronic device 1.

[0082] By forming the fixing member with a conductive metal member, the potential of the case 60 of the capacitor C1 becomes the same potential as that of the housing 20. Therefore, when the housing 20 is grounded, the case 60 of the capacitor C1 is also grounded.

[0083] (Implementation Method 2)

[0084] The structure for securing capacitor C1 to base 21 is not limited to the above example, and any structure may be used as long as capacitor C1 can be secured to base 21 via multiple members. Electronic device 2 securing capacitor C1 to base 21 using a structure different from that of Embodiment 1 will be described in Embodiment 2, focusing on the differences from Embodiment 1.

[0085] Figure 8 The electronic device 2 shown includes a plurality of second plate-shaped members 42 and 47 . The plurality of second plate-shaped members 42 and 47 are disposed between the first plate-shaped member 41 and the base 21 . Among the plurality of second plate-shaped members 42 and 47 , the second plate-shaped member 47 is disposed adjacent to the first plate-shaped member 41 .

[0086] As fixing members, the electronic device 2 has a plurality of first rod-shaped members 44 whose one end is mounted on the base 21, a plurality of third rod-shaped members 48 and 49 respectively arranged between the second plate-shaped members 42 and 47 and between the first plate-shaped member 41 and the second plate-shaped member 47, and a plurality of second fixing parts 50 for mounting the first plate-shaped member 41 on the third rod-shaped member 49.

[0087] The second plate-shaped members 42 and 47 have the same shape. Like the second plate-shaped member 42, a through hole for inserting the capacitor C1 is formed in the second plate-shaped member 47. The edge of the through hole faces the outer peripheral surface of the housing 60 with a gap therebetween.

[0088] The second plate-shaped member 47 is formed of a plate-shaped member having a square main surface. The second plate-shaped member 47 preferably has sufficient rigidity and strength to withstand the maximum vibration expected of a railway vehicle without deformation. For example, the second plate-shaped member 47 is formed of a metal member such as iron, stainless steel, or aluminum, or a plate-shaped fiber-reinforced plastic, having a thickness of 10 mm or greater.

[0089] like Figure 9 As shown, an insertion hole 47 a through which the third rod-shaped member 49 is inserted is formed in the second plate-shaped member 47 .

[0090] As in Embodiment 1, electronic device 2 includes four first rod-shaped members 44 . Electronic device 2 further includes four third rod-shaped members 48 , each having one end attached to first rod-shaped member 44 , and four third rod-shaped members 49 , each having one end attached to third rod-shaped member 48 .

[0091] Each third rod-shaped member 48 is disposed between adjacent second plate-shaped members 42 and 47. Similar to the first rod-shaped member 44, each third rod-shaped member 48 is a hexagonal prism with a tapered tip at one end. One end of each third rod-shaped member 48 is threaded. A third threaded hole 48a is formed at the other end of each third rod-shaped member 48. The wall surface of the third threaded hole 48a is threaded. Each third rod-shaped member 48 preferably has sufficient rigidity and strength to resist deformation even under the maximum vibrations expected of a railway vehicle. For example, the third rod-shaped member 48 is formed from a metal member such as iron, stainless steel, or aluminum, or fiber-reinforced plastic.

[0092] One end of each third rod-shaped member 48 is inserted into the insertion hole 42b of the second plate-shaped member 42 and is threadedly engaged with the first threaded hole 44a of the first rod-shaped member 44. By attaching the third rod-shaped member 48 to the first rod-shaped member 44 as described above, the second plate-shaped member 42 is fixed to the base 21 via the first rod-shaped member 44.

[0093] Each third rod-shaped member 49 is disposed between the first plate-shaped member 41 and the second plate-shaped member 47. Similar to the third rod-shaped member 48, each third rod-shaped member 48 is a hexagonal prism with a tapered tip at one end. One end of each third rod-shaped member 49 is threaded. A third threaded hole 49a is formed at the other end of each third rod-shaped member 49. The wall surface of the third threaded hole 49a is threaded. Each third rod-shaped member 49 preferably has sufficient rigidity and strength to resist deformation even under the maximum vibrations expected of a railway vehicle. For example, the third rod-shaped member 49 is formed from a metal member such as iron, stainless steel, or aluminum, or from a fiber-reinforced plastic.

[0094] One end of each third rod-shaped member 49 is inserted into the insertion hole 47a of the second plate-shaped member 47 and is threadedly engaged with the third threaded hole 48a of the third rod-shaped member 48, which is provided adjacent to the third rod-shaped member 49. As a result, the third rod-shaped members 48 and 49 are attached to each other. By attaching the third rod-shaped member 49 to the third rod-shaped member 48 as described above, the second plate-shaped member 47 is fixed to the base 21 via the third rod-shaped member 48 and the first rod-shaped member 44.

[0095] The electronic device 2 includes four second fixing members 50 attached to the third rod-shaped member 49. The second fixing members 50 are inserted through the insertion holes 41a of the first plate-shaped member 41 and threadedly engaged with the third threaded holes 49a of the third rod-shaped member 49. By attaching the second fixing members 50 to the third rod-shaped member 49 as described above, the first plate-shaped member 41 is fixed to the base 21 via the third rod-shaped member 49, the third rod-shaped member 48, and the first rod-shaped member 44.

[0096] As described above, capacitor C1 is mounted on base 21 by mutually attached fixing members. Specifically, capacitor C1 is fixed to base 21 via first plate member 41 , first fixture 50 , third rod-shaped members 49 , third rod-shaped members 48 , and first rod-shaped member 44 .

[0097] As described above, in electronic device 2 according to Embodiment 2, capacitor C1 is fixed to base 21 using a fixing member comprising first rod-shaped member 44, third rod-shaped members 48 and 49, and first fixing member 50. By fixing capacitor C1 to base 21 using this fixing member, vibration of capacitor C1 is minimized. Compared to Embodiment 1, capacitor C1 is fixed to base 21 via more components, resulting in even less vibration of capacitor C1 included in electronic device 2.

[0098] (Implementation 3)

[0099] The structure for securing capacitor C1 to base 21 is not limited to the above example, and any structure may be used as long as capacitor C1 can be secured to base 21 via multiple members. Electronic device 3 securing capacitor C1 to base 21 using a structure different from that of Embodiments 1 and 2 will be described in Embodiment 3, focusing on the differences from Embodiment 1.

[0100] Figure 10 and Figure 10 The cross-sectional view at the XI-XI line is Figure 11 The electronic device 3 according to the third embodiment includes a plurality of first spacers 51 that abut against the second plate-shaped member 42 and the base 21 , and a plurality of second spacers 52 that abut against the first plate-shaped member 41 and the second plate-shaped member 42 .

[0101] As fixing members, the electronic device 3 has a first fastening member 53 that fixes the first spacer 51 to the base 21, a second fastening member 54 that fixes the second plate-shaped member 42 to the first spacer 51, a third fastening member 55 that fixes the second plate-shaped member 52 to the second plate-shaped member 42, and a fourth fastening member 56 that fixes the first plate-shaped member 41 to the second spacer 52.

[0102] The electronic device 3 includes four first spacers 51. Each first spacer 51 is formed from a columnar member having a T-shaped cross-section perpendicular to the Y-axis. The first spacers 51 preferably have sufficient rigidity and strength to withstand the maximum vibration expected from a railway vehicle without deformation. The first spacers 51 are formed, for example, from a metal member such as stainless steel or aluminum, or from fiber-reinforced plastic. For example, the first spacers 51 are formed by cutting a metal block.

[0103] The electronic device 3 includes two second spacers 52. Each second spacer 52 is formed from a columnar member having a T-shaped cross-section perpendicular to the Y-axis. The second spacers 52 preferably have sufficient rigidity and strength to withstand the maximum vibration expected from a railway vehicle without deformation. The second spacers 52 are formed, for example, from a metal member such as stainless steel or aluminum, or fiber-reinforced plastic. For example, the second spacers 52 are formed by cutting a metal block.

[0104] like Figure 12 As shown, a hole 21d into which the first fastening member 53 is inserted is formed in the base 21. The wall surface of the hole 21d is threaded.

[0105] The first plate-shaped member 41 has an insertion hole 41b through which the fourth fastening member 56 is inserted. The second plate-shaped member 42 has an insertion hole 42c through which the second fastening member 54 is inserted, and an insertion hole 42d through which the third fastening member 55 is inserted.

[0106] Two insertion holes 51a for inserting the first fastening members 53 are formed at one end of the first spacer 51 that contacts the base 21. A first fastening hole 51b for inserting the second fastening member 54 is formed at the other end of the first spacer 51. For example, the wall surface of the first fastening hole 51b is threaded.

[0107] Two insertion holes 52 a for inserting the third fastening members 55 are formed at one end of the second spacer 52 that contacts the second plate-shaped member 42 , and a second fastening hole 52 b for inserting the fourth fastening member 56 is formed at the other end of the second spacer 52 .

[0108] The first fastening member 53 preferably has rigidity and strength sufficient to prevent deformation even when subjected to the maximum vibration expected of a railway vehicle. For example, the first fastening member 53 is formed of a metal member such as iron, stainless steel, or aluminum, or fiber-reinforced plastic.

[0109] The first fastening member 53 is, for example, a bolt with a threaded tip, and is threadedly engaged with the hole 21d. Specifically, the first fastening member 53 is inserted through the insertion hole 51a of the first spacer 51 abutting the base 21 and is threadedly engaged with the hole 21d of the base 21. As a result, the first spacer 51 is fixed to the base 21.

[0110] The second fastening member 54 preferably has rigidity and strength sufficient to prevent deformation even when subjected to the maximum vibration expected of a railway vehicle. For example, the second fastening member 54 is formed of a metal member such as iron, stainless steel, or aluminum, or fiber-reinforced plastic.

[0111] The second fastening member 54 is, for example, a bolt with a threaded tip, and is threadedly engaged with the first fastening hole 51b of the first spacer 51. Specifically, the second fastening member 54 is inserted through the insertion hole 42c of the second plate-shaped member 42 abutting the first spacer 51 and is threadedly engaged with the first fastening hole 51b of the first spacer 51. As a result, the second plate-shaped member 42 is fixed to the first spacer 51. As described above, the second fastening member 54 is attached to the first spacer 51, thereby securing the second plate-shaped member 42 to the base 21 via the first spacer 51.

[0112] The third fastening member 55 includes a bolt 55a with a threaded tip and a nut 55b having an inner peripheral surface that is threadedly engaged with the bolt 55a. The third fastening member 55 preferably has sufficient rigidity and strength to resist deformation even under the maximum vibrations expected of a railway vehicle. For example, the third fastening member 55 can be formed from a metal member such as iron, stainless steel, or aluminum, or from a fiber-reinforced plastic.

[0113] The bolt 55a is inserted through the insertion hole 52a of the second spacer 52 and the insertion hole 42d of the second plate-shaped member 42 and is then threadedly engaged with the nut 55b, thereby fixing the second spacer 52 to the second plate-shaped member 42. As a result, the second spacer 52 is fixed to the base 21 via the second plate-shaped member 42 and the first spacer 51.

[0114] The fourth fastening member 56 preferably has rigidity and strength sufficient to prevent deformation even when subjected to the maximum vibration expected of a railway vehicle. For example, the fourth fastening member 56 is formed of a metal member such as iron, stainless steel, or aluminum, or fiber-reinforced plastic.

[0115] The fourth fastening member 56 is, for example, a bolt with a threaded tip, and is threadedly engaged with the second fastening hole 52b of the second spacer 52. Specifically, the fourth fastening member 56 is inserted through the insertion hole 41b of the first plate-shaped member 41 and is threadedly engaged with the second fastening hole 52b of the second spacer 52. As a result, the first plate-shaped member 41 is fixed to the second spacer 52. As described above, the fourth fastening member 56 is attached to the second spacer 52, thereby securing the first plate-shaped member 41 to the base 21 via the second spacer 52, the second plate-shaped member 42, and the first spacer 51.

[0116] As described above, capacitor C1 is mounted on base 21 by mutually attached fixing members. Specifically, capacitor C1 is fixed to base 21 via first plate-shaped member 41, fourth fastening member 56, second spacer 52, third fastening member 55, second plate-shaped member 42, second fastening member 54, first spacer 51, and first fastening member 53.

[0117] As described above, in the electronic device 3 according to the third embodiment, the capacitor C1 is fixed to the base 21 by the fixing member including the first spacer 51, the second spacer 52, the first fastening member 53, the second fastening member 54, the third fastening member 55, and the fourth fastening member 56. Due to the arrangement of the first spacer 51 and the second spacer 52, the capacitor C1 included in the electronic device 3 is less susceptible to vibration.

[0118] (Implementation 4)

[0119] The structure for securing capacitor C1 to base 21 is not limited to the above example, and any structure may be used as long as capacitor C1 can be secured to base 21 via multiple members. Electronic device 4, which secures capacitor C1 to base 21 using a structure different from that of Embodiments 1-3, will be described in Embodiment 4, focusing on the differences from Embodiment 1.

[0120] Figure 13 Electronic device 4 according to Embodiment 4 shown here includes four first spacers 51 that abut against second plate-shaped member 42 and base 21, similarly to Embodiment 3. Electronic device 4 includes first plate-shaped member 57 that extends toward base 21 from the other end face of housing 60, specifically, from the end face provided with mounting portion 62.

[0121] The electronic device 4 includes, as fixing members, a first fastening member 53 that fixes the first spacer 51 to the base 21 , and a second fastening member 54 that fixes the first plate-shaped member 57 and the second plate-shaped member 42 to the first spacer 51 .

[0122] like Figure 13 and Figure 14 As shown in FIG. 5 , the first plate-shaped member 57 is formed by bending a flat plate member. A portion of the first plate-shaped member 57 abuts against the second plate-shaped member 42 .

[0123] The second fastening member 54 is inserted through the abutting first plate member 57 and second plate member 42 and is screwed into a first fastening hole (not shown) of the first spacer 51. As a result, the first plate member 57 is fixed to the base 21 via the second plate member 42 and the first spacer 51.

[0124] As described above, in electronic device 4 according to Embodiment 4, capacitor C1 is fixed to base 21 by a fixing member including first spacer 51, first fastening member 53, and second fastening member 54. The provision of first spacer 51 reduces vibration of capacitor C1 included in electronic device 4.

[0125] The present disclosure is not limited to the above-described embodiments. Any combination of the above-described embodiments is possible. As an example, the electronic device 1 may include a first spacer 51 and a first fastening member 53 instead of the first rod-shaped member 44 , and the second rod-shaped member 45 may be threadedly engaged with the first fastening hole 51 b of the first spacer 51 .

[0126] The method of mounting the capacitor C1 on the first plate-shaped member 41 is not limited to the above example. Figure 15 and Figure 16 As shown, capacitor C1 included in electronic device 5 may include a mounting portion 66 that covers the outer circumference of housing 60 and is mounted on housing 60. Mounting portion 66 has two protrusions 67 that protrude in a direction away from the outer circumference of housing 60. Electronic device 5 includes a bolt 58 that is inserted through protrusions 67 and first plate-shaped member 41 and has a threaded tip, and a nut 59 that is threadedly engaged with bolt 58. The threaded engagement of bolt 58 and nut 59 secures capacitor C1 to first plate-shaped member 41.

[0127] As another example, Figure 17 As shown in FIG. 1 , the housing 60 of the capacitor C1 included in the electronic device 6 may include two protrusions 67 protruding from the outer peripheral surface of the housing 60. The protrusions 67 may be formed integrally with the housing 60. Figure 15 and Figure 16 Similarly to the example of FIG, the bolt 58 inserted through the protrusion 67 and the first plate-shaped member 41 is screwed into the nut 59 , thereby fixing the capacitor C1 to the first plate-shaped member 41 .

[0128] The electronic device 1 - 6 includes one capacitor C1 , but the number of capacitors is arbitrary. Figure 18 and Figure 19 , an electronic device 7 including a plurality of capacitors C1 is shown. Electronic device 7 includes two capacitors C1 arranged in the Y-axis direction. Electronic device 7 includes the same fixing member as electronic device 1. The mounting portion 62 of each capacitor C1 is inserted through the first plate-shaped member 41 and fastened to the mounting portion 62 by a bolt 43, thereby attaching each capacitor C1 to the first plate-shaped member 41. As in the first embodiment, the first plate-shaped member 41, with the two capacitors C1 mounted thereon, is secured to the base 21 via the first rod-shaped member 44, the second rod-shaped member 45, and the first fixing member 46. As a result, the two capacitors C1 are secured to the base 21.

[0129] The number of the second plate-shaped members 42 and 47 provided to the electronic device 2 is not limited to two as in the above example, but may be any number greater than two. Figure 8 In addition to the illustrated structure, the electronic device 2 may further include one or more second plate-shaped members 47 and a plurality of third rod-shaped members 48 provided between adjacent second plate-shaped members 47 .

[0130] The number of second plate-shaped members 42 included in the electronic device 3 is not limited to one as in the above example, but may be any number of one or more. Figure 20 , an electronic device 8 is shown having a plurality of second plate-shaped members 42. The electronic device 8 includes the plurality of second plate-shaped members 42 and a plurality of second spacers 52. The second spacers 52 are provided at positions where they abut two adjacent second plate-shaped members 42 within the plurality of second plate-shaped members 42, and at positions where they abut the first plate-shaped member 41 and the second plate-shaped member 42 provided adjacent to the first plate-shaped member 41.

[0131] The first fastening member 53 secures the first spacer 51 to the base 21. The second fastening member 54 secures the second plate-shaped member 42, which abuts the first spacer 51, to the first spacer 51. The third fastening member 55 secures the second spacer 52 to the second plate-shaped member 42, which abuts the second spacer 52. The fourth fastening member 56 secures the first plate-shaped member 41 to the second spacer 52, which abuts the first plate-shaped member 41.

[0132] The circuit configuration of the power conversion unit 11 is not limited to the above-described example, and any circuit configuration may be used as long as the circuit includes the switching element 12 , which is an electronic component that generates heat.

[0133] An elastic member may be provided in the gap between the through hole 42a and the housing 60. The provision of the elastic member prevents the capacitor C1 from coming into contact with the second plate-shaped member 42 when the capacitor C1 vibrates.

[0134] The shapes of the main surfaces of the first plate-shaped member 41 and the second plate-shaped members 42 and 47 are not limited to squares, and may be rectangular, circular, elliptical, or the like.

[0135] The capacitor C1 is not limited to the above examples, and may be any type. As an example, a three-terminal capacitor may be used as the capacitor C1.

[0136] The shape of the housing 60 is not limited to the above examples, and the outer shape may have a square or rectangular cylindrical shape.

[0137] The first fastening member 53, the second fastening member 54, the third fastening member 55, and the fourth fastening member 46 can be fastened by caulking. In the case of caulking, the above-mentioned screw processing is unnecessary.

[0138] The load device 71 is not limited to an electric motor, and may be any electronic device such as a lighting device or an air conditioner that is operated by receiving power from the electronic devices 1-8.

[0139] The circuit structure of the electronic device 1 - 8 is not limited to the above example, and any circuit including the capacitor C1 may be used. As an example, the electronic device 1 - 8 may be a power conversion device that converts AC power supplied from a power source into AC power for supply to the load device 71 .

[0140] The orientation in which the electronic device 1-8 is installed is not limited to the above example. As one example, the electronic device 1-8 can be installed on a railway vehicle with the first main surface 21a of the base 21 horizontal. As another example, the electronic device 1-8 can be installed on a railway vehicle with the first main surface 21a of the base 21 perpendicular to the direction of travel of the railway vehicle.

[0141] The electronic device 1 - 8 is not limited to being installed under the floor of the railway vehicle body, but may also be installed on the roof of the railway vehicle body.

[0142] The electronic devices 1-8 are not limited to DC-fed railway vehicles; they can also be mounted on AC-fed railway vehicles. When the electronic devices 1-8 are mounted on AC-fed railway vehicles, the power collection device receives AC power from a substation via a power supply line, steps down the voltage of the AC power using a transformer, converts the AC power to DC power using a converter, and then supplies the DC power output from the converter to the electronic devices 1-8.

[0143] The electronic device 1-8 is not limited to railway vehicles, but may be mounted on any mobile object such as a car, an airplane, or a ship, and may be installed in any place subject to vibration.

[0144] Various embodiments and variations of the present disclosure may be implemented without departing from the broad spirit and scope of the present disclosure. Furthermore, the aforementioned embodiments are intended to illustrate the present disclosure and do not limit its scope. That is, the scope of the present disclosure is indicated by the scope of the claims, not by the embodiments. Therefore, variations implemented within the scope of the patent claims and their equivalents are also considered to be within the scope of the present disclosure.

[0145] Label Description

[0146] 1, 2, 3, 4, 5, 6, 7, 8 electronic equipment

[0147] 1a, 1b terminal

[0148] 11 Power conversion unit

[0149] 12 switching elements

[0150] 13IGBT

[0151] 14 Recirculation diode

[0152] 15 busbar

[0153] 20 frame

[0154] 20a Opening

[0155] 21 base

[0156] 21a1st main surface

[0157] 21b Second main surface

[0158] 21c, 21d hole portion

[0159] 30 Cooling device

[0160] 31 heat pipes

[0161] 32 fins

[0162] 41, 57 1st plate-shaped member

[0163] 41a, 41b, 42b, 42c, 42d, 47a, 51a, 52a insertion holes

[0164] 42, 47 Second plate-shaped member

[0165] 42a through hole

[0166] 43, 55b, 59 nuts

[0167] 44 1st rod-shaped member

[0168] 44a 1st threaded hole

[0169] 45 second rod-shaped member

[0170] 45a second threaded hole

[0171] 46 1st fixing piece

[0172] 48, 49 third rod-shaped member

[0173] 48a, 49a third threaded holes

[0174] 50 2nd fixing piece

[0175] 51 1st spacer

[0176] 51b 1st fastening hole

[0177] 52 2nd spacer

[0178] 52b Second fastening hole

[0179] 53 1st fastening member

[0180] 54 second fastening member

[0181] 55 3rd fastening member

[0182] 55a, 58 bolts

[0183] 56 4th fastening member

[0184] 60 shell

[0185] 61 terminal

[0186] 62, 66 installation department

[0187] 63 capacitor elements

[0188] 64 lead piece

[0189] 65 Sealing component

[0190] 67 protrusion

[0191] 71 Loading device

[0192] C1 capacitor.

Claims

1. An electronic device, characterized in that: include: Plate-like base; A capacitor comprising a capacitor element, a housing having a cylindrical shape with both ends closed and accommodating the capacitor element, a plurality of terminals electrically connected to the capacitor element and exposed to the outside from one end surface of the housing toward the base, and a mounting portion provided on an outer surface of the housing; a first plate-shaped member for mounting the capacitor using the mounting portion; One or more second plate-shaped members, the one or more second plate-shaped members being disposed between the first plate-shaped member and the base and forming a through hole for inserting the capacitor; as well as A fixing member fixes the first plate-shaped member to any one of the second plate-shaped members and fixes one or more of the second plate-shaped members to the base.

2. The electronic device according to claim 1, wherein comprising one second plate-shaped member, The fixing member has: a plurality of first rod-shaped members, each of which has one end mounted on the base; a plurality of second rod-shaped members each having one end inserted through the second plate-shaped member and attached to the first rod-shaped member; as well as The first plate-shaped member is attached to a plurality of first fixing members at the other ends of the second rod-shaped members.

3. The electronic device according to claim 2, wherein: A hole is formed in the base, One end of the first rod-shaped member is threadedly engaged with the hole portion of the base, and a first threaded hole is formed at the other end of the first rod-shaped member. One end of the second rod-shaped member is inserted into the second plate-shaped member and is threadedly engaged with the first threaded hole of the first rod-shaped member. A second threaded hole is formed at the other end of the second rod-shaped member. The first fixing member is inserted into the first plate-shaped member and is threadedly engaged with the second threaded hole.

4. The electronic device according to claim 1, wherein comprising a plurality of the second plate-shaped members, The fixing member has: a plurality of first rod-shaped members, each of which has one end mounted on the base; a plurality of third rod-shaped members disposed between two adjacent second plate-shaped members among the plurality of second plate-shaped members, and between the first plate-shaped member and the second plate-shaped member disposed adjacent to the first plate-shaped member, with at least one of the third rod-shaped members being inserted through the second plate-shaped member and mounted to each other; as well as The first plate-shaped member is mounted on a plurality of second fixing members of the third rod-shaped member provided at a position adjacent to the first plate-shaped member. One end of the third rod-shaped member provided at a position adjacent to the first rod-shaped member is inserted through the second plate-shaped member and attached to the first rod-shaped member.

5. The electronic device according to claim 4, wherein: A hole is formed in the base, One end of the first rod-shaped member is threadedly engaged with the hole portion of the base, and a first threaded hole is formed at the other end of the first rod-shaped member. The third threaded hole is formed at the other end of the third rod-shaped member. One end of the third rod-shaped member provided at a position adjacent to the first rod-shaped member among the plurality of third rod-shaped members is inserted through the second plate-shaped member and threadedly engaged with the first threaded hole, and one end of another third rod-shaped member is inserted through the second plate-shaped member and threadedly engaged with the third threaded hole of the third rod-shaped member provided at a position adjacent to the third rod-shaped member. The second fixing tool is inserted through the first plate-shaped member and is threadedly engaged with the third threaded hole of the third rod-shaped member provided at a position adjacent to the first plate-shaped member.

6. The electronic device according to claim 1, wherein comprising one second plate-shaped member, further comprising a plurality of first spacers abutting against the second plate-shaped member and the base, The first plate-shaped member has a shape extending from the other end surface of the housing toward the base, and a portion of the first plate-shaped member abuts against the second plate-shaped member. The fixing member has: a plurality of first fastening members for fixing the first spacer to the base; and A plurality of second fastening members fix the first plate-shaped member and the second plate-shaped member to the first spacer.

7. The electronic device according to claim 1, wherein: comprising one second plate-shaped member, The device further includes: a plurality of first spacers abutting against the second plate-shaped member and the base; and a plurality of second spacers abutting against the first plate-shaped member and the second plate-shaped member, The fixing member has: a first fastening member for fixing the first spacer to the base; a second fastening member for fixing the second plate-shaped member to the first spacer; a third fastening member for fixing the second spacer to the second plate-shaped member; and The first plate-shaped member is fixed to the fourth fastening member of the second spacer.

8. The electronic device according to claim 1, wherein comprising a plurality of the second plate-shaped members, The system further includes: a first spacer abutting against the second plate-shaped member and the base; and a plurality of second spacers provided at positions abutting two of the second plate-shaped members adjacent to each other among the plurality of second plate-shaped members, and at positions abutting the first plate-shaped member and the second plate-shaped member provided at positions adjacent to the first plate-shaped member, The fixing member has: a first fastening member for fixing the first spacer to the base; a second fastening member fixing the second plate-shaped member in contact with the first spacer to the first spacer; a third fastening member that fixes the second spacer to the second plate-shaped member that abuts against the second spacer; and The first plate-shaped member is fixed to the fourth fastening member of the second spacer that is in contact with the first plate-shaped member.

9. The electronic device according to any one of claims 1 to 8, wherein: The mounting portion is formed by a protrusion protruding from the other end surface of the housing.

10. The electronic device according to any one of claims 1 to 8, wherein: The mounting portion includes a protrusion having a shape surrounding an outer peripheral surface of the housing and protruding in a direction away from the outer peripheral surface.

11. The electronic device according to any one of claims 1 to 8, wherein: The mounting portion is formed by a protrusion protruding from the outer peripheral surface of the housing.

12. The electronic device according to any one of claims 1 to 8, wherein: Also included: at least one electronic component that generates heat when powered and is mounted on the base; and A bus bar is arranged along the base and electrically connects at least one of the plurality of terminals and at least one of the electronic components.

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