Electrical connection unit

Abstract

One embodiment provides an electrical connection unit that can improve noise reduction. [Solution] An electrical connection unit of one embodiment comprises a rigid member, an electronic component having a movable part, a busbar electrically connected to the electronic component, a base member having a first surface facing the electronic component and a second surface located on the opposite side of the first surface and facing the rigid member, and holding the busbar, and a first fixing part fixed to the rigid member, and a cushion member disposed between the rigid member and the base member, or between the rigid member and the busbar, and when viewed from a crossing direction intersecting the first surface, disposed between the electronic component and the first fixing part.

Description

Technical Field

[0001] Embodiments of the present invention relate to an electrical connection unit.

Background Art

[0002] An electrical connection unit having a housing for accommodating electronic components and a bus bar attached to the housing in an upright posture is known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in an electrical connection unit, it is expected to suppress the emission of sound generated from a relay or the like having a movable part and improve the quietness.

[0005] One embodiment provides an electrical connection unit capable of improving quietness.

Means for Solving the Problems

[0006] An electrical connection unit according to one embodiment includes a rigid member, an electronic component having a movable part, a bus bar electrically connected to the electronic component, a first surface facing the electronic component, and a second surface located on the opposite side of the first surface and facing the rigid member, and has a first base portion that holds the bus bar, and a base member including a first fixing portion fixed to the rigid member, and a cushion member disposed between the rigid member and the base member or between the rigid member and the bus bar and disposed between the electronic component and the first fixing portion when viewed from an intersecting direction intersecting the first surface.

Effects of the Invention

[0007] According to one embodiment, it is possible to improve noise reduction. [Brief explanation of the drawing]

[0008] [Figure 1] A cross-sectional view showing an electrical connection unit of an embodiment. [Figure 2] A perspective view illustrating the main body of the embodiment. [Figure 3] A perspective view showing a partially disassembled connection unit of the embodiment. [Figure 4] A perspective view showing a partially disassembled subunit of the embodiment. [Figure 5] A perspective view illustrating the electronic components and connecting components of the embodiment. [Figure 6] A perspective view showing a wiring substrate of an embodiment. [Figure 7] A perspective view showing a partially disassembled wiring substrate of the embodiment. [Figure 8] A bottom view showing the wiring substrate of the embodiment. [Figure 9] A cross-sectional view of the structure shown in Figure 2, along the line IX-IX. [Modes for carrying out the invention]

[0009] The embodiments will be described below with reference to the drawings. In the following description, components having the same or similar functions will be denoted by the same reference numerals. Duplication of these components may be omitted. Note that the components described below do not limit the scope of the embodiments.

[0010] In this disclosure, terms are defined as follows: “Connection” may include electrical connections, not just mechanical ones. That is, “Connection” may include electrical or mechanical connections, not just cases where two elements to be connected are directly connected, with another element interposed between them. “Accommodation” may include cases where only a part of a part is accommodated, not just cases where the entire part is accommodated (with the remaining part protruding). “Facing” means that the virtual projections of two objects overlap when viewed from a particular direction. That is, “Facing” may include cases where two objects face each other, not just cases where two objects face each other with another member present between them. “Orthogonal” may include cases where they are “approximately orthogonal.” “Same” may include cases where they are “approximately the same.”

[0011] In this disclosure, the +X direction, -X direction, +Y direction, -Y direction, +Z direction, and -Z direction are defined as follows. As shown in Figures 1 to 3, the +X direction is the direction from the first end 80e1 to the second end 80e2 of the metal plate 80, which will be described later. The -X direction is the direction opposite to the +X direction. Hereinafter, when the +X direction and the -X direction are not distinguished, they will simply be referred to as the "X direction". The +Y direction and the -Y direction are directions that intersect (e.g., are orthogonal to) the X direction. The +Y direction is the direction from the third end 80e3 to the fourth end 80e4 of the metal plate 80, which will be described later. The -Y direction is the direction opposite to the +Y direction. Hereinafter, when the +Y direction and the -Y direction are not distinguished, they will simply be referred to as the "Y direction". The +Z direction and the -Z direction are directions that intersect (e.g., are orthogonal to) the X direction and the Y direction. The +Z direction is the direction from the metal plate 80, which will be described later, to the main body MU. The -Z direction is the opposite direction to the +Z direction. In the following, when the +Z and -Z directions are not distinguished, they will simply be referred to as the "Z direction." The Z direction is an example of a "first direction" or "intersecting direction." The X direction is an example of a "second direction." Note that the "second direction" is not limited to the X direction, but may be the Y direction or other directions.

[0012] Hereinafter, when the X direction and the Y direction are not distinguished, it may be referred to as the "horizontal direction". Hereinafter, the Z direction may be referred to as the "vertical direction". Also hereinafter, the +Z direction side may be referred to as "up", and the -Z direction side may be referred to as "down". However, these expressions are for convenience of explanation and do not limit the gravitational direction (installation posture of the electrical connection unit 1).

[0013] (Embodiment) <1. Configuration of Electrical Connection Unit> The electrical connection unit 1 is, for example, an in-vehicle device mounted on a vehicle such as an EV (Electric Vehicle), HEV (Hybrid Electric Vehicle), or PHEV (Plug-in Hybrid Electric Vehicle). The electrical connection unit 1 may be referred to as, for example, an "electrical connection box" or a "junction box". However, the electrical connection unit 1 is not limited to a box-shaped device.

[0014] The electrical connection unit 1 has, for example, a main body unit MU, a metal plate 80, an insulating sheet 91, a plurality of heat transfer members 92, an insulating cover 93, and a plurality of cushion members 94.

[0015] <2. Main Body Unit> First, the main body unit MU will be described. The main body unit MU is a part that performs the main functions of the electrical connection unit 1 (for example, switching of the electrical connection state or overcurrent protection). In this embodiment, the main body unit MU is divided into a plurality of sub-units SU. The main body unit MU is formed by connecting a plurality of sub-units SU. In this embodiment, the main body unit MU has three sub-units SU (sub-units SUX, SUY, SUZ). Each sub-unit SU may be referred to as a "circuit configuration body".

[0016] The sub-unit SUX has an electrical first function. The sub-unit SUX includes, for example, a plurality of electronic components 10X and a wiring board 40X. The plurality of electronic components 10X are electrically connected to the wiring board 40X.

[0017] The sub-unit SUY has an electrical second function. The second function is a function different from the first function. The sub-unit SUY includes, for example, a plurality of electronic components 10Y and a wiring board 40Y. The plurality of electronic components 10Y are electrically connected to the wiring board 40Y.

[0018] The sub-unit SUZ has an electrical third function. The third function is a function different from the first function and the second function. The sub-unit SUZ includes, for example, a plurality of electronic components 10Z and a wiring board 40Z. The plurality of electronic components 10Z are electrically connected to the wiring board 40Z.

[0019] In this embodiment, the three sub-units SUX, SUY, and SUZ are arranged side by side in the X direction. For example, the sub-unit SUX is arranged on the +X direction side with respect to the sub-unit SUY. The sub-unit SUX and the sub-unit SUY are electrically connected. On the other hand, the sub-unit SUZ is arranged on the -X direction side with respect to the sub-unit SUY. The sub-unit SUZ and the sub-unit SUY are electrically connected.

[0020] In this embodiment, the three wiring boards 40X, 40Y, and 40Z included in the three sub-units SUX, SUY, and SUZ are arranged on the same plane. In other words, the three wiring boards 40X, 40Y, and 40Z are arranged at the same height position in the Z direction. With these configurations, one large wiring board 40M is formed by the three wiring boards 40X, 40Y, and 40Z.

[0021] In this embodiment, the three subunits SUX, SUY, and SUZ have the same or similar basic structure as each other. Based on this basic structure, one subunit, SU, will be described in detail below as a representative. Hereinafter, when subunits SUX, SUY, and SUZ are not distinguished, they will simply be referred to as "subunit SU". Similarly, when electronic components 10X, 10Y, and 10Z are not distinguished, they will simply be referred to as "electronic component 10". Furthermore, when routing boards 40X, 40Y, and 40Z are not distinguished, they will simply be referred to as "routing board 40".

[0022] Furthermore, the main body MU does not necessarily have to be divided into multiple subunits SU, as in the example described above. That is, the main body MU may be formed from multiple electronic components 10 and one wiring substrate 40. Also, the two or more subunits SU are not limited to subunits SU having different functions, but may also be subunits SU having the same function.

[0023] <3. Subunit Configuration> Next, we will explain the configuration of the subunit SU. Figure 4 is a perspective view showing a partially disassembled subunit SU. The subunit SU includes, for example, a plurality of electronic components 10, a plurality of connecting components 20 for connecting components, and a routing board 40. Each connecting component 20 is a member that forms a vertical electrical path. Each connecting component 20 may be referred to as a "vertical routing member". The routing board 40 includes, for example, a base plate 41, one or more bus bars 42, and a plurality of fastening members 43.

[0024] <3.1 Electronic components and connectors for connecting components> Multiple electronic components 10 and multiple connecting components 20 for connecting the components will be described. Multiple electronic components 10 are electronic components mounted in the subunit SU according to the required functions. Electronic components 10 are, for example, relays (e.g., mechanical relays) and are heat-generating components that generate heat when energized. Each connecting component 20 electrically connects the electronic components 10 to the wiring board 40. The connecting components 20 form part of the current path in the subunit SU. The connecting components 20 are made of metal (e.g., copper or copper alloy). The connecting components 20 may also be referred to as "metal components". The subunit SU may also be equipped with other electronic components besides the electronic components 10 (e.g., connectors, fuses, capacitors, branching components, various sensors (e.g., current sensors or voltage sensors), electronic control units, or electronic component units that combine two or more of these). The electronic components 10 and their corresponding connecting components 20 will be described in detail below.

[0025] <3.1.1 Electronic Components> Figure 5 is a perspective view showing an electronic component 10. The electronic component 10 is an electronic component that produces operating noise. The electronic component 10 has, for example, a case 11, a component body 12, a plurality of terminals 13, and a plurality of mounting parts 14. The plurality of terminals 13 are arranged side by side at one end of the electronic component 10, for example.

[0026] (case) The case 11 is an outer casing that forms most of the external shape of the electronic component 10. The case 11 is made of, for example, synthetic resin and has insulating properties. The case 11 houses the component body 12. The case 11 and the component body 12 may be formed as a single unit.

[0027] In this embodiment, the case 11 has insulating ribs 11a that protrude horizontally (e.g., in the X direction) and extend in the Z direction. The insulating ribs 11a are, for example, plate-shaped and aligned horizontally (e.g., in the X direction) and in the Z direction. The insulating ribs 11a extend, for example, along the entire length of the case 11 in the Z direction. The insulating ribs 11a are positioned between a plurality of terminals 13 (terminals 13A and 13B, described later). The insulating ribs 11a electrically insulate terminals 13A and 13B. In this embodiment, a portion of the insulating ribs 11a is positioned between the first portions 21 (described later) of two connecting components 20 connected to the electronic component 10. The insulating ribs 11a electrically insulate the first portions 21 of the two connecting components 20 connected to the electronic component 10.

[0028] (Main part of the component) The main component body 12 is the part that performs the main function of the electronic component 10. The main component body 12 has a braking part 16 and a movable part 17. The braking part 16 has, for example, a coil that generates a magnetic field in response to the coil current input to the electronic component 10. The movable part 17 has, for example, a movable contact that moves in response to the magnetic field generated by the braking part 16 and switches between a conductive state and a non-conductive state.

[0029] (Terminals) Terminal 13 is an electrical connection part exposed to the outside of the case 11. Terminal 13 is electrically connected to the component body 12 inside the case 11. In this embodiment, the electronic component 10 includes terminals 13A and terminal 13B as a plurality of terminals 13. One of terminals 13A and terminal 13B is the positive terminal. The other of terminals 13A and terminal 13B is the negative terminal. One of terminals 13A and terminal 13B is an example of a "first terminal". The other of terminals 13A and terminal 13B is an example of a "second terminal".

[0030] In this embodiment, terminals 13A and 13B are provided at one end of the electronic component 10 in the horizontal direction (e.g., the X direction). Terminals 13A and 13B are arranged side by side in the horizontal direction (e.g., the Y direction). Each terminal 13 has a mounting hole 13h into which a fastening member 71 (e.g., a screw or bolt), described later, is attached. The mounting hole 13h opens in the horizontal direction (e.g., the X direction). The inner circumferential surface of the mounting hole 13h of the electronic component 10 has a screw groove.

[0031] (Mounting part) The mounting portion 14 is a part for fixing the electronic component 10. The mounting portion 14 has a mounting hole 14h into which a fastening member 112 (for example, a screw or bolt, see Figure 3) described later is attached. The mounting hole 14h opens in the Z direction. The mounting hole 14h is a through hole through which the fastening member 112 passes. The mounting portion 14 is fixed to a metal plate 80.

[0032] <3.1.2 Connecting Components> The connecting component 20 is a component that electrically connects the electronic component 10 and the wiring substrate 40. In this embodiment, the connecting component 20 electrically connects the electronic component 10 and the busbar 42 included in the wiring substrate 40. In this embodiment, the width L12 of the connecting component 20 in the longitudinal direction (e.g., X direction) of the electronic component 10 is smaller than the width L11 of the electronic component 10 in the longitudinal direction. The connecting component 20 has, for example, a first portion 21 and a second portion 22.

[0033] (Part 1) The first portion 21 of the connecting component 20 is the portion that connects to the terminal 13 of the electronic component 10. The first portion 21 is a plate-like or rectangular parallelepiped portion that extends in the Z direction. The first portion 21 extends in the Z direction along one end of the electronic component 10 (for example, the end in the X direction). The first portion 21 is an upright portion that stands upright in the Z direction relative to the routing substrate 40 (for example, relative to the bus bar 42 described later). The first portion 21 is adjacent to the electronic component 10 in the horizontal direction (for example, the X direction). For example, the first portion 21 is adjacent to the terminal 13 of the electronic component 10 in the horizontal direction (for example, the X direction) and is connected to the terminal 13 of the electronic component 10 from the horizontal direction (for example, the X direction).

[0034] The first portion 21 of the connecting part 20 has a first mounting hole 21h through which a fastening member 71 (e.g., a screw or bolt) is passed. The first mounting hole 21h opens horizontally (e.g., in the X direction). The first portion 21 also has a recess 25 around the first mounting hole 21h. The recess 25 is a accommodating part that houses the head of the fastening member 71 inserted into the first mounting hole 21h. The first portion 21 is physically and electrically connected to the terminal 13 of the electronic component 10 by the fastening member 71 passed through the first mounting hole 21h engaging with the mounting hole 13h of the terminal 13 of the electronic component 10. Note that the first portion 21 does not necessarily have a recess 25.

[0035] (Second part) The second portion 22 of the connecting component 20 is the portion that connects to the bus bar 42. The second portion 22 protrudes horizontally (e.g., in the X direction) from the -Z direction end of the first portion 21. The second portion 22 is a plate portion that runs horizontally. The second portion 22 is adjacent to the bus bar 42 in the Z direction and connects to the bus bar 42 from the Z direction. The second portion 22 of the connecting component 20 is attached from the Z direction to a fastening member 43 (e.g., a screw or bolt, see Figure 4) that protrudes from the bus bar 42 in the +Z direction, and is physically and electrically connected to the bus bar 42. In this embodiment, the second portion 22 of the connecting component 20 has a second mounting hole 22h through which the fastening member 43 passes. The second mounting hole 22h is open in the Z direction. The second portion 22 has the fastening member 43 passing through the second mounting hole 22h. Then, the second portion 22 is fixed to the busbar 42 by engaging the tip of the fastening member 43, which is passed through the second mounting hole 22h, with the engaging member 44 (for example, a nut). In this embodiment, the first portion 21 and the second portion 22 form an L-shaped single connecting component 20.

[0036] <3.2 Circuit board for cable routing> Next, the wiring substrate 40 will be described. Figure 6 is a perspective view showing the cable routing substrate 40. The cable routing substrate 40 is a member that forms at least a portion of the electrical conduction paths between a plurality of electronic components 10, and / or at least a portion of the electrical conduction paths between electronic components 10 and other electronic components, and / or at least a portion of the electrical conduction paths between electronic components 10 and external equipment. In this disclosure, "cable routing substrate" means a substrate-type cable routing structure. "Substrate-type" means that, when viewed as a whole, regardless of the fine shape, it is in the shape of a plate along a single plane. In this disclosure, "plate-like," "sheet-like," or "plane" is not limited to cases where it is perfectly flat, but may include cases where there are fixing structures or ribs protruding in the Z direction, or where there are uneven shapes on the surface that follow the thickness of the busbars. In this embodiment, the cable routing substrate 40 is in the shape of a plate along the X and Y directions.

[0037] In this embodiment, the base plate 41 and the multiple busbars 42 are integrated by insert molding. For example, the cable routing substrate 40 is formed as a single piece by insert molding the busbars 42 with the base plate 41 after the fastening members 43 are fixed to the busbars 42. That is, the busbars 42 are integrated with the base plate 41 without using fastening members such as screws or bolts. The cable routing substrate 40 may be formed by a different structure instead of insert molding. Modified examples in which the cable routing substrate 40 is formed by a different structure will be described later.

[0038] Figure 7 is a perspective view showing the cable routing board 40 in a partially disassembled state. For the sake of convenience, the base plate 41, bus bar 42, and fastening member 43 will be described below with reference to the partially disassembled drawing of the cable routing board 40.

[0039] (Base plate) The base plate 41 is a holding member that integrally holds a plurality of busbars 42 arranged horizontally with spacing between them. The base plate 41 is made of, for example, synthetic resin and has insulating properties. The base plate 41 electrically insulates the plurality of busbars 42. The base plate 41 is an example of a "base member". The base plate 41 may also be called an "insulating substrate". The base plate 41 has, for example, a first planar portion 51 and a plurality of first fixing portions 52. The first planar portion 51 is an example of a first base portion. The first fixing portions 52 will be described later.

[0040] The first planar portion 51 is a plate-shaped part formed within the base plate 41. The first planar portion 51 is plate-shaped and oriented horizontally. The first planar portion 51 forms the main part of the base plate 41. The first planar portion 51 forms the base (insulating base) of the base plate 41. In this embodiment, the first planar portion 51 extends across the entire width of the base plate 41 in the X direction, except for the four corners of the base plate 41, and also extends across the entire width of the base plate 41 in the Y direction.

[0041] The first planar portion 51 has a first surface 51a and a second surface 51b. The first surface 51a is a surface oriented in the +Z direction. The first surface 51a is a plane that aligns with the horizontal direction. The first surface 51a faces multiple electronic components 10 and also faces the insulating cover 93 (see Figure 1) of the electrical connection unit 1. The second surface 51b is located on the opposite side from the first surface 51a. The second surface 51b is a surface oriented in the -Z direction. The second surface 51b is a plane that aligns with the horizontal direction. The second surface 51b faces the metal plate 80 (see Figure 1). The thickness direction (plate thickness direction) of the first planar portion 51 is the Z direction.

[0042] The first planar portion 51 has, for example, one or more (e.g., multiple) housing portions 55, each of which accommodates a busbar 42. The multiple housing portions 55 are formed apart from each other in the X or Y direction. Each housing portion 55 is, for example, a through hole that penetrates the first planar portion 51 in the Z direction. Alternatively, the housing portion 55 may be a recess provided on the first surface 51a or the second surface 51b of the first planar portion 51 and recessed in the Z direction. In this disclosure, "the housing portion penetrates the planar portion in the first direction (Z direction)" may include cases where a portion of the total length of the housing portion 55 penetrates the first planar portion 51 in the Z direction (for example, the remaining portion of the housing portion 55 may be a recess recessed in the Z direction, or it may be provided inside the base plate 41 and not exposed to the outside of the base plate 41). Similarly, in this disclosure, "the housing portion is recessed in the first direction (Z direction)" may also include cases where a portion of the total length of the housing portion 55 is recessed in the Z direction (for example, the remaining portion of the housing portion 55 may be a through hole penetrating the first planar portion 51 in the Z direction, or it may be provided inside the base plate 41 and not exposed to the outside of the base plate 41).

[0043] Each housing section 55 has an external shape that corresponds to the shape of the bus bar 42 it houses when viewed from the Z direction. Each housing section 55 houses the corresponding bus bar 42.

[0044] (Bus bar) The busbar 42 is a routing member (electrical connection member) included in the routing substrate 40. The busbar 42 is a routing member for electrically connecting multiple electronic components 10, or for electrically connecting electronic components 10 to other electronic components. Alternatively, the busbar 42 may be a routing member for connecting electronic components 10 to external equipment. The busbar 42 is made of metal (e.g., copper or a copper alloy) and is conductive. In this embodiment, the multiple busbars 42 are arranged horizontally with space between them. The multiple busbars include portions that are arranged on the same plane as each other. The multiple busbars 42 are held by the first planar portion 51 of the base plate 41.

[0045] At least a portion of each busbar 42 is plate-shaped and oriented horizontally. At least a portion of each busbar 42 is housed in the housing 55 and extends along the first planar portion 51. That is, at least a portion of each busbar 42 extends along the first surface 51a of the first planar portion 51. At least a portion of each busbar 42 extends horizontally within the housing 55. In this embodiment, each busbar 42 is plate-shaped and oriented horizontally throughout its entire length. Each busbar 42 is housed in the housing 55 and extends along the first planar portion 51 throughout its entire length. Hereinafter, the portion of each busbar 42 that is housed in the housing 55 and extends along the first planar portion 51 may be referred to as the "plate portion 42p". The busbar 42 is a member that forms a horizontal electrical circuit. The busbar 42 may also be referred to as a "horizontal wiring member".

[0046] Figure 8 is a plan view showing the wiring substrate 40. Each busbar 42 has, for example, a connecting portion 61 and an extended portion 63.

[0047] The connection portion 61 is the part that contacts one connecting component 20. The connecting component 20 is a connecting component that connects one electronic component 10 to the bus bar 42. The connection portion 61 is the part of the bus bar 42 that overlaps with the connecting component 20 when viewed from the Z direction. The connection portion 61 is adjacent to the connecting component 20 in the Z direction and is connected to the connecting component 20 from the Z direction.

[0048] The extension portion 63 extends from the connection portion 61 in the X or Y direction. The extension portion 63 may be provided, for example, between the connection portion 61 and other connection portions. The extension portion 63 may extend, for example, across the connection portion 61 and other connection portions. The extension portion 63 may connect the connection portion 61 and other connection portions, for example.

[0049] In this embodiment, the connecting portion 61 and the extending portion 63 are plate-shaped and oriented horizontally. In this embodiment, each busbar 42 is housed in a housing portion 55 and extends along the first planar portion 51. For example, the connecting portion 61 and the extending portion 63 are housed in a housing portion 55 and extend along the first planar portion 51.

[0050] In this embodiment, some of the extensions 63 of the busbars 42 are housed in the housing 55. That is, by housing the busbars 42 in the housing 55, they can be routed along a better path (for example, a shorter path) without being obstructed by the presence of the electronic components 10.

[0051] (Fastening member) The fastening member 43 is a component for fixing the bus bar 42 to the connecting component 20, which is the component to which the bus bar 42 is connected. The fastening member 43 is, for example, a crimping bolt fixed to the bus bar 42. The fastening member 43 is an example of a "fastening part".

[0052] As shown in Figure 7, in this embodiment, the connection portion 61 of each bus bar 42 has a through hole 42h. The through hole 42h penetrates the bus bar 42 in the Z direction. The fastening member 43 is, for example, a bolt having a shaft portion 43a and a head portion 43b. The circumferential surface of the shaft portion 43a has screw grooves. The diameter of the head portion 43b is larger than the diameter of the shaft portion 43a. The fastening member 43 is crimped and fixed to the bus bar 42 with the shaft portion 43a passing through the through hole 42h of the bus bar 42, and the head portion 43b being crimped and fixed. With this fixing, the fastening member 43 is electrically and physically connected to the bus bar 42 with the shaft portion 43a protruding from the through hole 42h of the bus bar 42 in the +Z direction. Note that the fastening member 43 is not limited to crimping and may be fixed to the bus bar 42 by welding or other methods.

[0053] In this embodiment, the connecting component 20 is attached to the fastening member 43 from the Z direction, with the connecting component 20 already fixed to the electronic component 10 by the fastening member 71. For example, the connecting component 20 is inserted into the second mounting hole 22h of the second portion 22 of the fastening member 43 by inserting the shaft portion 43a of the fastening member 43. Then, an engaging member 44 (for example, a nut, see Figure 9) is engaged with the shaft portion 43a of the fastening member 43 that protrudes from the second mounting hole 22h of the second portion 22 of the connecting component 20. The engaging member 44 is attached to the shaft portion 43a, for example, along the Z direction. This engagement fixes the second portion 22 of the connecting component 20 to the fastening member 43.

[0054] <4. Metal Plate> Next, the composition of the metal plate 80 will be described. The metal plate 80 is a component that ensures the rigidity of the electrical connection unit 1 and improves the heat dissipation of the electrical connection unit 1. The metal plate 80 is made of metal (for example, aluminum or an aluminum alloy). The metal plate 80 may have higher rigidity than, for example, the insulating sheet 91. The metal plate 80 may also be referred to as a "rigid member".

[0055] As shown in Figures 1 to 3, the metal plate 80, when viewed from the Z direction, has a long side extending in the X direction and is rectangular in shape along the horizontal direction. The metal plate 80 has a first end 80e1, a second end 80e2, a third end 80e3, and a fourth end 80e4. The first end 80e1 and the second end 80e2 are a pair of longitudinal ends of the metal plate 80, separated in the X direction. The third end 80e3 and the fourth end 80e4 are a pair of short ends of the metal plate 80, separated in the Y direction. The metal plate 80 includes, for example, a second planar portion 81, a plurality of second fixing portions 82, and a plurality of third fixing portions 83. The second planar portion 81 is an example of a second base portion.

[0056] The second planar portion 81 is a plate-shaped part within the metal plate 80. The second planar portion 81 is plate-shaped and oriented horizontally. The second planar portion 81 forms the main part of the metal plate 80. The second planar portion 81 forms the base (metal base) of the metal plate 80. In this embodiment, the second planar portion 81 is large enough to cover the three subunits SU from below. The second planar portion 81 faces the wiring substrate 40 of the three subunits SU. In this embodiment, the metal plate 80 leaves a gap S1 (see Figure 1) including an insulating sheet 91 between itself and the second surface 51b of the first planar portion 51 of each subunit SU, and faces the second surface 51b of the first planar portion 51 of each subunit SU.

[0057] The multiple second fixing parts 82 are fixing parts for fixing the base plate 41 of each subunit SU to the metal plate 80. When viewed from the Z direction, the multiple second fixing parts 82 are provided at positions corresponding to the first fixing parts 52 of the base plate 41 of each subunit SU. Each second fixing part 82 is a cylindrical or prismatic boss that protrudes in the +Z direction from the second planar part 81 of the metal plate 80. Each second fixing part 82 will be described in detail later.

[0058] The multiple third fixing parts 83 are fixing parts for directly fixing the electronic components 10 of each subunit SU to the metal plate 80 without going through the base plate 41. The multiple third fixing parts 83 are provided at positions corresponding to the mounting parts 14 of the electronic components 10 of each subunit SU when viewed from the Z direction. Each third fixing part 83 is a cylindrical or prismatic boss that protrudes from the second planar part 81 in the +Z direction. Each third fixing part 83 will be described in detail later.

[0059] <5. Insulating Sheet> Next, the structure of the insulating sheet 91 will be described. The insulating sheet 91 is an insulating member for electrically insulating the metal plate 80 from the busbars 42 of each subunit SU. The insulating sheet 91 is made of a synthetic resin such as polyester or polyimide and has insulating properties. When viewed from the Z direction, the insulating sheet 91 is rectangular. The insulating sheet 91 is a sheet that runs horizontally. The insulating sheet 91 is placed between the second flat portion 81 of the metal plate 80 and the routing substrate 40 of each subunit SU. The insulating sheet 91 may also be placed, for example, between the second flat portion 81 of the metal plate 80 and a plurality of heat transfer members 92. The insulating sheet 91 may also be placed, for example, between the second flat portion 81 of the metal plate 80 and a plurality of cushion members 94.

[0060] In this embodiment, the insulating sheet 91 is attached to the second flat portion 81 of the metal plate 80. The insulating sheet 91 has notches or openings to avoid the second fixing portion 82 and the third fixing portion 83 of the metal plate 80. Alternatively, the insulating sheet 91 may be provided between the wiring substrate 40 of each subunit SU and the plurality of heat transfer members 92. If the plurality of heat transfer members 92 and the plurality of cushion members 94 have insulating properties and the necessary insulating properties are ensured by the plurality of heat transfer members 92 and the plurality of cushion members 94, the insulating sheet 91 may be omitted.

[0061] <6. Heat transfer components> Next, the configuration of the multiple heat transfer members 92 will be described. Each heat transfer member 92 is positioned between the metal plate 80 and the busbar 42. Each heat transfer member 92 is sandwiched between the second flat portion 81 of the metal plate 80 and the busbar 42. Each heat transfer member 92 transfers heat from the electronic component 10 to the busbar 42, and / or heat generated by the busbar 42, from the busbar 42 to the metal plate 80. Each heat transfer member 92 is a member for transferring heat generated by the electronic component 10 when energized, and / or heat (Joule heat) generated by the busbar 42 itself when energized, to the metal plate 80. Each heat transfer member 92 is, for example, an elastic heat transfer sheet (for example, a thermally conductive silicone sheet). Each heat transfer member 92 is formed of a material with a higher thermal conductivity than, for example, the base plate 41. However, each heat transfer member 92 is not limited to the above example, and may be a heat transfer member formed of a thermally conductive gel or other material.

[0062] Figure 8 is a bottom view showing a wiring substrate 40 on which a plurality of heat transfer members 92 and a plurality of cushion members 94 are arranged. In this embodiment, the plurality of heat transfer members 92 are partially provided on the wiring substrate 40. For example, each heat transfer member 92 is positioned so as to overlap a portion of the corresponding bus bar 42 when viewed from the Z direction. More specifically, each heat transfer member 92 is positioned so as to overlap a portion of the corresponding bus bar 42 near the electronic component 10 when viewed from the Z direction. In this embodiment, each heat transfer member 92 is positioned so as to overlap a corresponding connecting component 20 when viewed from the Z direction.

[0063] In this embodiment, a portion of each heat transfer member 92 is in contact with the corresponding bus bar 42 at a position that overlaps with the corresponding connecting component 20 when viewed from the Z direction. In this case, each heat transfer member 92 facilitates the transfer of heat from the terminal 13 of the electronic component 10 to the connecting component 20, and from the corresponding connecting component 20 to the metal plate 80 via the bus bar 42.

[0064] In this embodiment, a portion of each heat transfer member 92 is positioned so as to overlap with the head 43b of the corresponding fastening member 43 when viewed from the Z direction, and is in contact with the head 43b of the corresponding fastening member 43. In this case, each heat transfer member 92 facilitates the transfer of heat from the terminal 13 of the electronic component 10 to the connecting component 20 from the corresponding fastening member 43 to the metal plate 80.

[0065] In this embodiment, a portion of each heat transfer member 92 is in contact with the corresponding bus bar 42 at a position that overlaps with the corresponding electronic component 10 when viewed from the Z direction. In this case, each heat transfer member 92 can more easily transfer heat from the corresponding electronic component 10 to the bus bar 42, and from the bus bar 42 to the metal plate 80. Furthermore, each bus bar 42 is thermally connected to the corresponding electronic component 10 by the upper surface of each bus bar 42 being in contact with the corresponding electronic component 10.

[0066] <7. Cushioning material> Next, the configuration of the multiple cushioning members 94 will be described. Each cushioning member 94 is positioned between the metal plate 80 and the corresponding cable routing substrate 40. The cushioning member 94 is held in place by being elastically deformed between the metal plate 80 and the corresponding cable routing substrate 40. The cushioning member 94 may be positioned, for example, between the metal plate 80 and the corresponding base plate 41, or between the metal plate 80 and the bus bar 42.

[0067] Each cushion member 94 is positioned between the corresponding electronic component 10 and the corresponding first fixing part 52 when viewed from the Z direction. Each cushion member 94 may be positioned, for example, on a line segment connecting the center position of the corresponding electronic component 10 and the center position of the corresponding first fixing part 52 when viewed from the Z direction. Each cushion member 94 may be positioned, for example, on a line segment connecting the center position of the movable part 17 of the corresponding electronic component 10 and the center position of the corresponding first fixing part 52 when viewed from the Z direction. Each cushion member 94 may be positioned, for example, on a line segment connecting the center position of the sound-producing part of the corresponding electronic component 10 and the center position of the corresponding first fixing part 52 when viewed from the Z direction. Each cushion member 94 may be positioned away from the electronic component 10 when viewed from the Z direction. Each cushion member 94 may be positioned away from the first fixing part 52 when viewed from the Z direction. Each cushion member 94 may be positioned closer to the corresponding first fixing part 52 than to the corresponding electronic component 10 when viewed from the Z direction.

[0068] The electrical connection unit 1 includes a first cushioning element 95 as a cushioning member 94. The electrical connection unit 1 also includes a second cushioning element 96 as a cushioning member 94. Among the multiple cushioning members 94, each of some of the cushioning members 94 may be, for example, the first cushioning element 95. Also, among the multiple cushioning members 94, at least one cushioning member 94 (other than the first cushioning element 95) may be, for example, the second cushioning element 96. Although only one second cushioning element 96 is shown in Figure 8, the electrical connection unit 1 may have multiple second cushioning elements 96.

[0069] Each first cushion element 95 is separated from the corresponding busbar 42. Each first cushion element 95 is held by elastic deformation, sandwiched between the first planar portion 51 of the corresponding base plate 41 and the second planar portion 81 of the metal plate 80. Each first cushion element 95 is in contact with the second planar portion 81 of the metal plate 80 on the -Z direction side. Each first cushion element 95 is in contact with the first planar portion 51 of the corresponding base plate 41 on the +Z direction side. Each first cushion element 95 is provided separately from the plurality of heat transfer members 92. Each first cushion element 95 may be separated from the plurality of heat transfer members 92.

[0070] Each first cushioning element 95 may be made of a thermally conductive material, but it is not necessary for it to be made of a thermally conductive material. Each first cushioning element 95 may be made of, for example, electrically insulating rubber.

[0071] The second cushion element 96 is held in place by being elastically deformed between the second planar portion 81 of the metal plate 80 and the corresponding bus bar 42. The second cushion element 96 is in contact with the second planar portion 81 of the metal plate 80 on the -Z direction side. Each second cushion element 96 is in contact with the corresponding bus bar 42 on the +Z direction side.

[0072] The second cushion element 96 is, for example, an elastic heat transfer sheet (e.g., a thermally conductive silicone sheet). Each second cushion element 96 is formed of a material with a higher thermal conductivity than the base plate 41. However, the second cushion element 96 is not limited to the above example and may be a heat transfer member formed of a thermally conductive gel or other material. Each second cushion element 96 is positioned to overlap with a portion of the corresponding bus bar 42 when viewed from the Z direction. The second cushion element 96 may be shared with a heat transfer member, for example.

[0073] <8. Insulating cover> Returning to Figure 1, let's explain the configuration of the insulating cover 93. The insulating cover 93 is a component for preventing fingers from touching the electrical circuits of the main body MU. The insulating cover 93 is made of, for example, synthetic resin and has insulating properties. The insulating cover 93 is, for example, box-shaped with the -Z direction side open. The insulating cover 93 has a plurality of ventilation holes 93h. The insulating cover 93 is attached to the metal plate 80 along the Z direction. Note that the insulating cover 93 is not limited to a box-shaped component, but may also be a sheet-like component that covers the electrical circuits of the main body MU.

[0074] <9. Exposed busbar structure> Next, we will describe the exposed structure of each busbar 42. First, with reference to Figures 6 and 7, the exposed structure on the upper side of each busbar 42 will be described. In this embodiment, at least a portion of the extended portion 63 of the busbar 42 is exposed to the outside of the base plate 41 on the upper side (the first surface 51a side of the first planar portion 51). For example, the extended portion 63 of the busbar 42 is exposed to the outside of the base plate 41 on the upper side in at least a portion of the area that overlaps with the corresponding electronic component 10 when viewed from the Z direction.

[0075] In this embodiment, the busbar 42 is housed in the housing portion 55 along its entire length and extends along the first surface 51a of the first planar portion 51. The busbar 42 is exposed to the outside of the base plate 41 on its upper side along its entire length.

[0076] As shown in Figure 8, at least a portion of the extended portion 63 of the busbar 42 is exposed to the outside of the base plate 41 not only on the upper side but also on the lower side (second surface 51b side). For example, the busbar 42 is exposed to the outside of the base plate 41 on the lower side along its entire length.

[0077] <10. Fixed structure> Next, we will explain the fixing structure of the subunit SU.

[0078] <10.1 Structure of the metal plate> Figure 9 is a cross-sectional view of the structure shown in Figure 2 along the line IX-IX. The metal plate 80 has a second fixing portion 82 and a third fixing portion 83, as described above.

[0079] The second fixing portion 82 is a boss that protrudes in the +Z direction from the second planar portion 81 of the metal plate 80. The second fixing portion 82 protrudes, for example, beyond the first surface 51a of the first planar portion 51 of the base plate 41 in the +Z direction. In this embodiment, the second fixing portion 82 protrudes more significantly in the +Z direction than the third fixing portion 83, which will be described later. In the Z direction, the second fixing portion 82 faces the first fixing portion 52 of the base plate 41. The second fixing portion 82 has an engagement hole 82h that opens in the +Z direction. The inner circumferential surface of the engagement hole 82h has a screw groove.

[0080] The third fixing portion 83 is a boss that protrudes from the second planar portion 81 in the +Z direction. The third fixing portion 83 is inserted into a through hole 51h (described later) in the first planar portion 51 of the base plate 41. The third fixing portion 83 protrudes, for example, through the through hole 51h of the first planar portion 51 to the same position as the first surface 51a of the first planar portion 51, or to a position beyond the first surface 51a of the first planar portion 51 (a position on the +Z side of the first surface 51a). In the Z direction, the third fixing portion 83 faces the mounting portion 14 of the electronic component 10. The third fixing portion 83 has an engagement hole 83h that opens in the +Z direction.

[0081] A fastening member 112 (for example, a screw or bolt) is passed through the mounting hole 14h of the mounting portion 14 of the electronic component 10 from the +Z direction side. When the fastening member 112 passed through the mounting hole 14h of the mounting portion 14 of the electronic component 10 engages with the engagement hole 83h of the third fixing portion 83 of the metal plate 80, the electronic component 10 is fixed to the metal plate 80 without the base plate 41. The fastening member 112 is an example of a "second fastening member".

[0082] <10.2 Structure of the wiring substrate> The base plate 41 has a first fixing portion 52 which is fixed to the second fixing portion 82 of the metal plate 80. The first fixing portion 52 has, for example, an upright plate portion 52a and a horizontal plate portion 52b.

[0083] The upright plate portion 52a stands upright from the edge of the first flat portion 51 of the base plate 41 in the +Z direction. The upright plate portion 52a is a plate portion that is aligned along the Y and Z directions. The thickness direction of the upright plate portion 52a is the X direction.

[0084] The horizontal plate portion 52b extends horizontally from the +Z end of the upright plate portion 52a. The horizontal plate portion 52b is a plate portion that lies along the horizontal direction. The horizontal plate portion 52b faces the second fixing portion 82 of the metal plate 80 in the Z direction. The horizontal plate portion 52b has an insertion hole 52h that faces the engagement hole 82h of the second fixing portion 82 of the metal plate 80. A fastening member 111 (e.g., a screw or bolt) is passed through the insertion hole 52h. When the fastening member 111 passed through the insertion hole 52h of the first fixing portion 52 of the base plate 41 engages with the engagement hole 82h of the second fixing portion 82 of the metal plate 80, the base plate 41 is fixed to the metal plate 80. The fastening member 111 is an example of a "first fastening member". The upright plate portion 52a is an example of a "first part". The horizontal plate portion 52b of the subunit SUX is an example of a "second part".

[0085] Furthermore, the first planar portion 51 of the base plate 41 has the through hole 51h described above. The through hole 51h penetrates the first planar portion 51 in the Z direction. When viewed from the Z direction, the through hole 51h is located at a position corresponding to the third fixing portion 83 of the metal plate 80. The third fixing portion 83 of the metal plate 80 protrudes through the through hole 51h of the base plate 41 to the same position as the first surface 51a of the first planar portion 51, or to the +Z direction side of the first surface 51a of the first planar portion 51. The mounting portion 14 of the electronic component 10 is fixed to the third fixing portion 83 at the same position as the first surface 51a of the first planar portion 51, or to the +Z direction side of the first surface 51a of the first planar portion 51.

[0086] <11. Fixed structure related to multiple subunits> Next, returning to Figures 1 through 3, we will describe the fixing structure related to the multiple subunits SU. In this embodiment, the main body MU is divided into multiple subunits SU (for example, three subunits SUX, SUY, and SUZ).

[0087] The subunit SUX includes a plurality of electronic components 10X, a base plate 41, and a plurality of busbars 42. The plurality of busbars 42 include portions that are arranged on the same plane as each other and are electrically connected to the plurality of electronic components 10X. The subunit SUX is an example of a "first subunit".

[0088] Subunit SUY includes a plurality of electronic components 10Y, a base plate 41, and a plurality of busbars 42. The plurality of busbars 42 include portions that are arranged on the same plane as each other and are electrically connected to the plurality of electronic components 10Y. Subunit SUY is electrically connected to subunit SUX via connecting busbars, etc. Subunit SUY is an example of a "second subunit".

[0089] Subunit SUZ includes a plurality of electronic components 10Z, a base plate 41, and a plurality of busbars 42. The plurality of busbars 42 include portions that are arranged on the same plane as each other and are electrically connected to the plurality of electronic components 10Z. Subunit SUZ is electrically connected to subunit SUY via connecting busbars, etc. Subunit SUZ is an example of a "third subunit".

[0090] In this embodiment, multiple subunits SU (for example, three subunits SUX, SUY, and SUZ) are each fixed to a metal plate 80. With this configuration, multiple subunits SU (for example, three subunits SUX, SUY, and SUZ) are held together as a single unit by one metal plate 80.

[0091] In this embodiment, the longitudinal direction of subunit SUX is the X direction. The longitudinal direction of subunit SUY is the X direction. The longitudinal direction of subunit SUZ is the X direction. Multiple subunits SU (for example, three subunits SUX, SUY, and SUZ) are adjacent to each other in the X direction and are arranged in a line in the X direction. The longitudinal direction of the metal plate 80 is the X direction. The length of the metal plate 80 in the X direction is greater than the sum of the lengths of the multiple subunits SU (for example, three subunits SUX, SUY, and SUZ) in the X direction.

[0092] In this embodiment, the first fixing portion 52 of subunit SUX and the first fixing portion 52 of subunit SUY are positioned to overlap in the Z direction. The first fixing portion 52 of subunit SUX and the first fixing portion 52 of subunit SUY are fixed together to the second fixing portion 82 of the metal plate 80 by a single fastening member 111.

[0093] Similarly, the first fixing portion 52 of subunit SUY and the first fixing portion 52 of subunit SUZ are positioned to overlap in the Z direction. The first fixing portion 52 of subunit SUY and the first fixing portion 52 of subunit SUZ are fixed together to the second fixing portion 82 of the metal plate 80 by a single fastening member 111.

[0094] In this embodiment, the heat generated by the electronic component 10X and busbar 42 included in subunit SUX is transferred to the metal plate 80 via one or more heat transfer members 92 facing subunit SUX. Similarly, the heat generated by the electronic component 10Y and busbar 42 included in subunit SUY is transferred to the metal plate 80 via one or more heat transfer members 92 facing subunit SUY. The heat generated by the electronic component 10Z and busbar 42 included in subunit SUZ is transferred to the metal plate 80 via one or more heat transfer members 92 facing subunit SUZ.

[0095] In this embodiment, the plurality of sub-units SU (for example, three sub-units SUX, SUY, and SUZ) may have different heat generation amounts. Even when the heat generation amounts of the plurality of sub-units SU are different, cooling of the plurality of sub-units SU (for example, three sub-units SUX, SUY, and SUZ) can be promoted by one large metal plate 80. For example, when the heat generation amounts of the plurality of sub-units SU are different, heat equalization of the plurality of sub-units SU can be achieved by one large metal plate 80.

[0096] <12. Advantages> <A. Advantages related to the cushion member> According to this embodiment, each cushion member 94 is disposed between the electronic component 10 having the movable part 17 and the first fixing part 52 when viewed in the Z direction. With this configuration, among the sounds generated from the electronic component 10, the sound transmitted to the metal plate 80 through the first fixing part 52 is absorbed by each cushion member 94. By this action, the sound generated from the electronic component 10 is less likely to be transmitted to the metal plate 80, and the emission of the sound generated from the electronic component 10 can be suppressed. Therefore, improvement in quietness can be achieved.

[0097] Also, according to this embodiment, the second fixing part 82 protruding from the second flat part 81 is fixed to the first fixing part 52. With this configuration, among the sounds generated from the electronic component 10, the sound transmitted to the metal plate 80 through the first fixing part 52 is transmitted to the second flat part 81 through the second fixing part 82 protruding from the second flat part 81 after being absorbed by each cushion member 94. By this action, the sound generated from the electronic component 10 is less likely to be transmitted to the second flat part 81, and the emission of the sound generated from the electronic component 10 can be suppressed. Therefore, improvement in quietness can be achieved.

[0098] Also, according to this embodiment, when viewed from the Z direction, the first cushion element 95 is separated from the bus bar 42 with respect to the heat transfer member 92 overlapping the bus bar 42. With this configuration, a space that is less likely to impede the heat dissipation of the bus bar 42 can be used as the arrangement space for the first cushion element 95. If such a space can be utilized, it is easier to arrange the first cushion element 95. Therefore, it is easier to suppress the emission of sound generated from the electronic component 10. In addition, with this configuration, as the material of the first cushion element 95, not only a material with high thermal conductivity such as that forming the heat transfer member 92 is allowed, but also a material with low thermal conductivity is allowed. For example, as the material of the first cushion element 95, not only a material with high thermal conductivity, but also a material that is likely to absorb the sound generated from the electronic component 10 can be applied. Therefore, it is easier to suppress the emission of sound generated from the electronic component 10.

[0099] Also, according to this embodiment, the second cushion element 96 overlaps the bus bar 42 when viewed from the Z direction. With this configuration, the second cushion element 96 can suppress the emission of sound generated from the electronic component 10 and transfer heat from the bus bar 42 to the metal plate 80. For example, if the second cushion element 96 can transfer heat, the second cushion element 96 and the heat transfer member can be shared. Therefore, the number of components can be reduced.

[0100] According to this embodiment, the electrical connection unit 1 includes a metal plate 80 as a rigid member that is fixed facing the wiring board 40 and sandwiches a plurality of heat transfer members 92 and a plurality of cushion members 94. With this configuration, heat generated in the electronic component 10, bus bar 42, etc. can be dissipated to the metal plate 80. Therefore, while promoting the heat dissipation of the electrical connection unit 1, the emission of sound generated from the electronic component 10 can be suppressed.

[0101] <B. Advantages Regarding the Wiring Board> According to this embodiment, it becomes easier to reduce the height of the electrical connection unit 1. As a comparative example, consider an electrical connection unit in which the busbar is positioned upright relative to the lower wall of the housing. In such a comparative example configuration, the cross-sectional area of ​​the busbar is determined, for example, in order to perform its function as a cable guide, so it may be difficult to reduce the width (height) of the upright busbar. In this case, the width of the upright busbar becomes a bottleneck, which may make it difficult to reduce the height of the electrical connection unit.

[0102] In contrast to the comparative example described above, the electrical connection unit 1 comprises an electronic component 10 and a wiring substrate 40. The wiring substrate 40 includes a base plate 41 and busbars 42. The base plate 41 has a plate-shaped first planar portion 51 having a first surface 51a facing the electronic component 10. The first planar portion 51 has a housing portion 55 that is recessed in the Z direction or penetrates the first planar portion 51 in the Z direction. At least a portion of the busbars 42 are housed in the housing portion 55 and extend along the first planar portion 51. With this configuration, compared to the structure of the comparative example described above, in which at least a portion of the wiring path is formed on a plane, the width of the busbars is less likely to become a bottleneck, and it is easier to reduce the height of the electrical connection unit 1.

[0103] In particular, in this embodiment, in the low-profile electrical connection unit 1, for example, the electronic component 10 and the metal plate 80 are in close proximity, yet the sound transmitted to the metal plate 80 can be suppressed by the cushioning member 94. Therefore, both low profile and quiet operation can be achieved.

[0104] In this embodiment, the electrical connection unit 1 has a connecting component 20. The connecting component 20 electrically connects the electronic component 10 and the busbar 42. The busbar 42 has a connecting portion 61 that contacts the connecting component 20. The connecting portion 61 is housed in a housing portion 55 and extends along the first planar portion 51. With this configuration, a larger portion of the wiring path is formed on a plane, making it easier to further reduce the height of the electrical connection unit 1.

[0105] In this embodiment, the bus bar 42 is accommodated in the accommodating portion 55 over the entire length of the bus bar 42 and extends along the first planar portion 51. According to such a configuration, since more portions of the wiring path are formed on a plane, it becomes easier to further reduce the height of the electrical connection unit 1.

[0106] <Advantages Regarding Flat Bus Bars> According to this embodiment, the assemblability of the electrical connection unit 1 can be improved. As a comparative example, consider an electrical connection unit in which a bus bar is arranged in a standing posture with respect to the lower wall of the housing. In such a configuration of the comparative example, it is necessary to fix the bus bar to the housing in a standing posture, and it is difficult to improve the workability regarding the attachment of the bus bar. In this case, it may be difficult to improve the assemblability of the electrical connection unit 1.

[0107] For such a comparative example, in this embodiment, the electrical connection unit 1 includes a base plate 41 and a bus bar 42. The base plate 41 includes a plate-shaped first planar portion 51. The first planar portion 51 has an accommodating portion 55 that is recessed in the Z direction or penetrates the first planar portion 51 in the Z direction. At least a part of the bus bar 42 is accommodated in the accommodating portion 55 and extends along the first planar portion 51. According to such a configuration, it becomes easier to handle the base plate 41 and the bus bar 42 integrally, and the workability regarding the attachment of the bus bar can be improved compared to the configuration of the above comparative example. Therefore, the assemblability of the electrical connection unit 1 can be improved.

[0108] Particularly, in this embodiment, in the electrical connection unit 1 in which the assemblability is improved, for example, while the electronic component 10 and the metal plate 80 are in a configuration close to each other, the sound transmitted to the metal plate 80 can be suppressed by the cushioning member 94. Therefore, it is possible to achieve both improvement in assemblability and quieting.

[0109] In this embodiment, the busbar 42 is housed in the housing portion 55 along its entire length and extends along the first planar portion 51. This configuration makes it easier to reduce the height of the electrical connection unit 1 while improving the ease of assembly of the electrical connection unit 1.

[0110] In this embodiment, the busbar 42 is integrated with the base plate 41 by insert molding. This configuration eliminates or reduces the need to manually attach the busbar 42 to the housing. Therefore, the ease of assembly of the electrical connection unit 1 can be further improved.

[0111] In this embodiment, the busbar 42 has a fastening member 43 that protrudes in the Z direction, and a connecting component 20 that is attached to the fastening member 43 from the Z direction. The connecting component 20 electrically connects the electronic component 10 and the busbar 42. With this configuration, it becomes easier to align the direction of work when attaching the components to be connected to the busbar 42 with the Z direction. Aligning the direction of work further improves the ease of assembly of the electrical connection unit 1.

[0112] In this embodiment, the connecting component 20 is connected to the electronic component 10 from the X direction (or Y direction). With this configuration, for electronic components 10 that need to be connected from the X direction, the connection direction of the electronic component 10 to the busbar 42 can be changed to the Z direction by using the connecting component 20. Therefore, the ease of assembly of the electrical connection unit 1 can be further improved.

[0113] <13. Variation> Next, we will describe some variations. Note that, apart from the configurations described below, the configurations in each variation are the same as those of the embodiments described above.

[0114] (First variation) Each bus bar 42 is not limited to a structure in which at least a portion of the base plate 41 is exposed to the outside on its upper and lower sides. As a variation, the entire bus bar 42 may be covered by the base plate 41 on its upper side. As another variation, the entire bus bar 42 may be covered by the base plate 41 on its lower side. In this case, on the +Z direction side of each second cushion element 96, the second cushion element 96 may not be in contact with the bus bar 42 as long as it is in contact with the base plate 41 covering the bus bar 42. Also, on the +Z direction side of each heat transfer member 92, the heat transfer member 92 may not be in contact with the bus bar 42 as long as it is in contact with the base plate 41 covering the bus bar 42.

[0115] (Second variation) The base member having the first base portion is not limited to a base plate 41 having a first flat portion 51. As a modified example, the base member may have a first base portion such as a block portion, a curved portion, or a bent portion instead of the first flat portion 51.

[0116] (Third variation) The rigid member is not limited to the metal plate 80. As a modification, the rigid member may be a metal block. As another modification, the rigid member may be a resin plate. As yet another modification, the rigid member may be a resin block.

[0117] (Fourth variation) The rigid member having the second base is not limited to a metal plate 80 having a second flat portion 81. As a modified example, the rigid member may have a second base such as a block portion, a curved portion, or a bent portion instead of the second flat portion 81.

[0118] (Fifth variation) The routing substrate 40 is not limited to a structure in which the base plate 41 and the busbar 42 are integrated by insert molding. For example, the base plate 41, which is provided with a housing portion 55 for housing the busbar 42, may be molded, and then the busbar 42 may be placed in the housing portion 55. In this case, the busbar 42 may be fixed to the housing portion 55 by fitting, or by adhesive or other fastening means. In these cases, potting may be applied to fill the gap between the busbar 42 and the housing portion 55.

[0119] (Sixth variation) The base member of the cable routing substrate 40 is not limited to a base plate 41 having a plate-shaped first planar portion 51. The cable routing substrate 40 may also be a base member having a sheet-shaped first planar portion 51 (for example, an insulating sheet). In this case, a portion of the first planar portion 51 may conform to the outer shape of the bus bar 42 to form a housing portion 55. In this disclosure, "sheet-shaped" or "sheet" is not limited to a member with a thickness of 1 mm or more, and may also include a member with a thickness of less than 1 mm (so-called film).

[0120] (Seventh variation) The base plate 41 of the cable routing substrate 40 may include a plurality of members (plate members or sheet members). The plurality of members are provided so as to sandwich a plurality of bus bars 42 arranged in the horizontal direction. For example, the plurality of members may be integrated by sandwiching a plurality of bus bars 42, for example, by lamination molding. The plurality of members form a first planar portion 51. In this case, the housing portion 55 may be formed hollow inside the base plate 41 (between the plurality of members). The plurality of members may be a plurality of plate members, a plurality of sheet members, or a combination of plate members and sheet members. The sheet members may be, for example, flexible sheet members. The first planar portion 51 formed by the plurality of members has an opening that exposes at least the connection portion 61 of the bus bars 42.

[0121] (Variation 8) The connection between the electronic component 10 and the busbar 42 is not limited to a connection via the connecting component 20. The electronic component 10 may be directly connected to the busbar 42 using fastening members (e.g., bolts or screws) or welding.

[0122] Several embodiments and modifications have been described above. However, the embodiments and modifications are not limited to the examples described above. For example, multiple embodiments may be implemented in combination with each other. [Explanation of symbols]

[0123] 1. Electrical connection unit 10 Electronic Components 10X Electronic Components 10Y Electronic Components 10Z Electronic Components 11 cases 11a Insulating rib 12. Main body of the component 13 terminals 13A terminal 13B terminal 13h mounting holes 14 Mounting part 14h mounting holes 16 Braking section 17 Moving parts 20 connecting parts 21 Part 1 21h First mounting hole 22 Part 2 22h Second mounting hole 40 Circuit board for cable routing 40M Cable Management Board 40X Cable routing board 40Y Cable Management Board 40Z Cable routing board 41 Base plate (base component) 42 Bus Bar 42h through hole 42p board part 43 Fastening members 43a Shaft 43b Head 44 Engaging Member 51 1st plane part (1st base) 51a 1st page 51b 2nd side 51h through hole 52 1st fixed part 52a Standing plate part 52b Horizontal plate section 52h Through hole 55 Accommodation 61 Connection part 63 Stretching section 71 Fastening members 80 Metal plate (rigid member) 80e1 1st end 80e2 2nd end 80e3 3rd end 80e4 4th end 81 Second plane part (second base) 82 Second fixed part 82h Engagement hole 83 Third fixed part 83h Engagement hole 91 Insulating Sheet 92 Heat transfer components 93 Insulating cover 93h ventilation holes 94 Cushioning material 95 First cushion element 96 Second cushion element 111 Fastening member 112 Fastening members L11 width L12 width MU Main Unit S1 Gap SU Subunit SUX Subunit SUY Subunit SUZ Subunit

Claims

1. Rigid members and Electronic components with movable parts, A busbar electrically connected to the aforementioned electronic component, A base member comprising a first base portion that holds the busbar and has a first surface facing the electronic component and a second surface located on the opposite side of the first surface and facing the rigid member, and a first fixing portion fixed to the rigid member, A cushion member is disposed between the rigid member and the base member, or between the rigid member and the busbar, and when viewed from a direction intersecting the first surface, it is disposed between the electronic component and the first fixing part. Equipped with, Electrical connection unit.

2. The rigid member comprises a second base portion facing the second surface and a second fixing portion projecting from the second base portion in the intersecting direction to which the first fixing portion is fixed. The electrical connection unit according to claim 1.

3. The cushioning member includes a first cushioning element, which is positioned between the rigid member and the base member and is separated from the busbar when viewed from the intersecting direction. The electrical connection unit according to claim 1 or claim 2.

4. The cushioning member comprises a second cushioning element positioned between the rigid member and the busbar, which overlaps with the busbar when viewed from the intersecting direction. The electrical connection unit according to claim 1 or claim 2.

5. The rigid member comprises a metal plate. The electrical connection unit according to claim 1 or claim 2.

Images