WO2013047671A1 - Connection member and electrical connection device - Google Patents

Connection member and electrical connection device Download PDF

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Publication number
WO2013047671A1
WO2013047671A1 PCT/JP2012/074917 JP2012074917W WO2013047671A1 WO 2013047671 A1 WO2013047671 A1 WO 2013047671A1 JP 2012074917 W JP2012074917 W JP 2012074917W WO 2013047671 A1 WO2013047671 A1 WO 2013047671A1
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WO
WIPO (PCT)
Prior art keywords
extending
extending direction
recess
joint
support
Prior art date
Application number
PCT/JP2012/074917
Other languages
French (fr)
Japanese (ja)
Inventor
新田優
山戸修
鶴岡純司
Original Assignee
アイシン・エィ・ダブリュ株式会社
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Application filed by アイシン・エィ・ダブリュ株式会社 filed Critical アイシン・エィ・ダブリュ株式会社
Publication of WO2013047671A1 publication Critical patent/WO2013047671A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/18—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different subgroups of the same main group of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/71—Means for bonding not being attached to, or not being formed on, the surface to be connected
    • H01L24/72—Detachable connecting means consisting of mechanical auxiliary parts connecting the device, e.g. pressure contacts using springs or clips
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/07—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L29/00
    • H01L25/072—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L29/00 the devices being arranged next to each other
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
    • H05K7/1427—Housings
    • H05K7/1432—Housings specially adapted for power drive units or power converters
    • H05K7/14329—Housings specially adapted for power drive units or power converters specially adapted for the configuration of power bus bars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/34—Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
    • H01L2224/39—Structure, shape, material or disposition of the strap connectors after the connecting process
    • H01L2224/40—Structure, shape, material or disposition of the strap connectors after the connecting process of an individual strap connector
    • H01L2224/4005—Shape
    • H01L2224/4009—Loop shape
    • H01L2224/40095—Kinked
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/34—Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
    • H01L2224/39—Structure, shape, material or disposition of the strap connectors after the connecting process
    • H01L2224/40—Structure, shape, material or disposition of the strap connectors after the connecting process of an individual strap connector
    • H01L2224/401—Disposition
    • H01L2224/40135—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip
    • H01L2224/40137—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip the bodies being arranged next to each other, e.g. on a common substrate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L24/34—Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
    • H01L24/39—Structure, shape, material or disposition of the strap connectors after the connecting process
    • H01L24/40—Structure, shape, material or disposition of the strap connectors after the connecting process of an individual strap connector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10—Details of semiconductor or other solid state devices to be connected
    • H01L2924/11—Device type
    • H01L2924/13—Discrete devices, e.g. 3 terminal devices
    • H01L2924/1304—Transistor
    • H01L2924/1305—Bipolar Junction Transistor [BJT]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10—Details of semiconductor or other solid state devices to be connected
    • H01L2924/11—Device type
    • H01L2924/13—Discrete devices, e.g. 3 terminal devices
    • H01L2924/1304—Transistor
    • H01L2924/1305—Bipolar Junction Transistor [BJT]
    • H01L2924/13055—Insulated gate bipolar transistor [IGBT]

Definitions

  • the present invention relates to a plate-like connection member that includes a joint portion that is joined to an electrode member and extends in a predetermined extending direction, and an electrical connection device that includes the connection member.
  • connection member [external connection terminal 50] is directed from the support portion side supported by the support body [resin case 40] toward the electrode member [terminal block 62b] to be joined.
  • a joint portion that extends and is joined to the electrode member is formed at the tip portion.
  • connection member and the electrode member for example, the connection by laser welding
  • the bonding process is performed in a state where the connection member and the electrode member are in good surface contact.
  • Patent Document 1 there is no description referring to the contact state between the connection member and the electrode member at the time of joining, and, of course, a means for making the connection member make good surface contact with the electrode member at the time of joining. Is not disclosed in Patent Document 1.
  • JP 2010-103222 A (FIG. 1 etc.)
  • connection member that can be easily brought into surface contact with the electrode member during bonding.
  • the characteristic configuration of the plate-like connection member that includes the joint portion joined to the electrode member and extends in a predetermined extending direction is supported at the time of joining to the electrode member on both sides of the joint portion.
  • a connecting portion that connects the connecting portion and the supporting portion, and the connecting portion is located on both the connecting portion side and the supporting portion side along the extending direction.
  • An extending direction partition section partitioned by an edge, and the width of the connecting section in the extending orthogonal direction orthogonal to the extending direction in at least a part of the region along the extending direction is greater than that of the joint section. Is also narrowly formed.
  • a junction part since a junction part can be pressed to the electrode member side via a support part, a junction part is pressed with respect to an electrode member, without applying force directly with respect to a junction part. Can do.
  • the support portion since the support portion is provided on both sides of the joint portion, the joint portion is lifted from the electrode member on the side opposite to the support portion as compared with the case where the support portion is provided only on one side of the joint portion. This is suppressed, and it is easy to bring the connecting member into good surface contact with the electrode member.
  • the width of the connecting portion in the extending orthogonal direction is narrower than the connecting portion in at least a part of the region along the extending direction.
  • a support part can be located in the press direction side with respect to a junction part in the state which suppressed modification of a junction part.
  • an extension direction division part is provided in such a connection part, compared with the case where an extension direction division part is not provided, it is a connection part, suppressing the enlargement of a connection part. It is easy to ensure the amount of deformation. As a result, it is possible to prevent the force acting on the joint from becoming excessively large and the joint from being deformed or lifted, and good surface contact between the joint and the electrode member can be obtained.
  • the width in the extending direction of at least a part of the extending direction partition portion is narrower than the width in the extending orthogonal direction of the joint portion.
  • the connecting portion has a first recess in which a side edge portion on the first direction side which is one side of the extending orthogonal direction is recessed toward the second direction side opposite to the first direction, A second recessed portion in which a side edge portion on the second direction side is recessed toward the first direction side is formed so as to partially overlap when viewed in the extending direction, and the extending direction section
  • the portion is preferably formed in a region sandwiched between the first recess and the second recess.
  • the configuration of the connecting portion including the extending direction partitioning portion can be simplified, and the manufacturing cost of the connecting member can be suppressed.
  • the first recess is formed closer to the joint part than the second recess, and in the second connection part which is the other of the pair of connection parts, the second recess is It is preferable that the first recess is formed closer to the joint than the first recess.
  • the stress generated in the joint due to the pressing force applied to the joint via the connecting portion can be suppressed from being biased in the extending orthogonal direction, and deformation of the joint can be suppressed.
  • the width in the extending direction of the first concave portion and the second concave portion located on the joint portion side is formed wider than the other.
  • the first recessed portion is viewed in the extending orthogonal direction. It is preferable that the region along the extending direction that is formed and the region along the extending direction in which the second concave portion is formed are different from each other in the extending direction.
  • the extending direction partitioning portion is formed to extend in the extending orthogonal direction, and the end of the extending direction partitioning portion is connected to one end in the extending orthogonal direction. It is preferable that a joint portion extending portion extending from the portion to the joint portion side is coupled and a support portion side extending portion extending from the end portion to the support portion side is coupled to the other end portion. It is.
  • “extending” in a certain direction is not limited to a shape in which the extending direction of the member is parallel to the reference direction, and the extending direction of the member is the reference direction. Even if the direction intersects with the angle, it is used as a concept including a shape whose angle of intersection is within a predetermined range (for example, less than 45 degrees or less than 60 degrees).
  • the characteristic configuration of the electrical connection device according to the present invention includes a connection member configured as described above, and an insulating support that supports the connection member, and the support sandwiches the joint.
  • the pair of support portions provided on both sides are configured to be integrally supported.
  • connection member can be satisfactorily brought into surface contact with the electrode member. Becomes easy.
  • connection member according to the present invention is applied to a bus bar 50
  • the electrical connection device according to the present invention includes the bus bar 50 and controls the rotating electrical machine 2 (see FIG. 2).
  • bus bar module 1 is included in the inverter module 3 as an example. That is, in this embodiment, the bus bar 50 corresponds to the “connection member” in the present invention, and the bus bar module 1 corresponds to the “electrical connection device” in the present invention.
  • each direction of “X direction”, “Y direction”, and “Z direction” is defined with the bus bar 50 as a reference.
  • the direction (vertical direction) orthogonal to the joint surface 70a provided in the joint portion 70 of the bus bar 50 is defined as the “Z direction”.
  • the extending direction of the bus bar 50 is defined as “Y direction”
  • the direction orthogonal to the extending direction Y (extended orthogonal direction) is defined as “X direction” in a plane parallel to the joint surface 70a.
  • the extending direction Y of the bus bar 50 is the longitudinal direction of the portion of the bus bar 50 excluding a later-described concave portion 20 (see FIGS. 4 and 5) and an offset portion (see FIG. 5) in the offset connecting portion 83. In other words, it coincides with the longitudinal direction of the portion (band-shaped portion) extending in a band shape with a constant width in the bus bar 50.
  • upper refers to the side (upper side in FIG. 1, ⁇ Z direction) from the electrode member 90 to the bus bar 50 along the vertical direction (Z direction), and “lower”. Indicates the side (the lower side in FIG. 1, + Z direction) from the bus bar 50 toward the electrode member 90 along the vertical direction (Z direction).
  • the wording for example, “parallel”, “orthogonal” etc.
  • a manufacturing error is caused by, for example, a deviation within a tolerance range of a dimension or a mounting position.
  • the inverter module 3 includes a bus bar module 1 and a switching module 33.
  • the bus bar module 1 is disposed on the upper side of the switching module 33.
  • the joining part 70 of the bus bar 50 with which the bus-bar module 1 is equipped, and the electrode member 90 with which the switching module 33 is provided are the states which made the joining surface 70a of the joining part 70 contact
  • an inverter circuit bridge circuit that performs power conversion between DC power and AC power as shown in FIG. 2 is formed, and is rotated by the power supplied from the DC power supply 4 via the inverter circuit.
  • the electric power source 2 is driven, or the DC power source 4 is charged with the electric power generated by the rotating electric machine 2.
  • the rotating electrical machine 2 is an AC motor that operates by three-phase alternating current, and the rotating electrical machine 2 is provided as a driving force source in, for example, an electric vehicle or a hybrid vehicle.
  • 2 represent a discharge resistor and a smoothing capacitor connected in parallel between the positive electrode P and the negative electrode N of the DC power supply 4, respectively.
  • the switching module 33 includes a base member 41 and an element substrate 42.
  • the base member 41 is a plate-like member that serves as a base on which the element substrate 42 is placed.
  • the base member 41 is made of a conductive material (for example, a metal material such as copper or aluminum, the same applies hereinafter), and also functions as a heat sink.
  • the element substrate 42 has an upper surface serving as an element mounting surface on which a semiconductor element (in this example, the switching element 31 and the diode element 32) is mounted.
  • the element substrate 42 has a base via an electrical insulating member 43. It is disposed on the upper surface of the member 41.
  • the element substrate 42 is formed of a conductive material and also functions as a heat spreader.
  • a plurality (six in this example) of element substrates 42 are arranged on the upper surface of the base member 41 so as to be aligned in a row in the extending orthogonal direction X.
  • One switching element 31 and one diode element 32 are mounted on the upper surface of each element substrate 42.
  • the switching element 31 is an IGBT (insulated gate bipolar transistor) in this example.
  • the diode element 32 is connected in parallel between the emitter and the collector of the switching element 31 and functions as FWD (Free (Wheel Diode).
  • an electrode member 90 for electrically connecting the semiconductor element disposed on the element substrate 42 and the bus bar 50 is provided.
  • the electrode member 90 is formed of a conductive material, and in this example, two types of electrode members 90 including a first electrode member 91 and a second electrode member 92 are disposed on the element substrate 42.
  • a flat joint surface 90 a is formed on the upper surface of each of the first electrode member 91 and the second electrode member 92 so that the joint surface 70 a of the bus bar 50 contacts.
  • the first electrode member 91 and the second electrode member 92 are collectively referred to as the electrode member 90 when it is not necessary to distinguish between them.
  • the first electrode member 91 is an electrode member that conducts to both the collector electrode of the switching element 31 and the cathode electrode of the diode element 32.
  • the first electrode member 91 is placed on the upper surface of the element substrate 42, and both the collector electrode formed on the lower surface of the switching element 31 and the cathode electrode formed on the lower surface of the diode element 32. Conduction through the element substrate 42.
  • the current path formed by the bus bar module 1 through the first electrode member 91 and the cathode electrode of the diode element 32 (the bold line portion in FIG. 2). It is connected to the.
  • the second electrode member 92 is an electrode member that is electrically connected to both the emitter electrode of the switching element 31 and the anode electrode of the diode element 32.
  • the second electrode member 92 is disposed so as to be placed on the upper surfaces of the switching element 31 and the diode element 32, and the emitter electrode formed on the upper surface of the switching element 31 and the upper surface of the diode element 32. Conduction is directly conducted to both the anode electrode formed on the substrate.
  • a current path formed by the bus bar module 1 through the second electrode member 92 and the anode electrode of the diode element 32 (the thick line portion in FIG. 2). It is connected to the.
  • the bus bar module 1 includes a bus bar 50 and a support body 60 that supports the bus bar 50 as shown in FIG.
  • the bus bar 50 is formed of a conductive material.
  • the bus bar module 1 includes two types of bus bars 50, a first bus bar 51 (see FIG. 4) and a second bus bar 52 (see FIG. 5). ing.
  • the bus bar module 1 includes six first bus bars 51 and six second bus bars 52.
  • the first bus bar 51 is joined to the first electrode member 91
  • the second bus bar 52 is joined to the second electrode member 92.
  • the bus bar 50 when it is not necessary to distinguish the 1st bus bar 51 and the 2nd bus bar 52 in particular, these are named generically and are called the bus bar 50.
  • the bus bar 50 includes a joint portion 70 that is joined to the electrode member 90 at a portion exposed from the support body 60 (solid line portion), and has a predetermined extending direction (Y direction in this example). ). And the bus bar 50 connects the support part 71 (part including the broken line part in FIG. 3) supported at the time of joining to the electrode member 90 on both sides of the joint part 70, and the joint part 70 and the support part 71. Connecting portion 80 to be connected. As will be described later, a plurality of (two in this example) concave portions 20 are formed in the connecting portion 80, and the concave portion 20 located closest to the joint portion 70 and the concave portion 20 located closest to the support portion 71 are provided. A portion (including a position where the recess 20 is formed) defined on both sides in the extending direction Y is defined as a connecting portion 80. The detailed configuration of the connecting unit 80 will be described later in “2. Configuration of connecting unit”.
  • the bonding portion 70 is formed in a plate shape having a flat bonding surface 70 a on the lower surface.
  • the joining portion 70 is formed in a strip shape extending in the extending direction Y, in which the width in the extending direction Y is larger than the width in the extending orthogonal direction X.
  • the support portion 71 is also formed in a plate shape like the joint portion 70.
  • the support portion 71 is formed in a strip shape extending in the extending direction Y, similarly to the joint portion 70.
  • the support body 60 is formed of an electrically insulating material (for example, resin), and as shown in FIG. 6, at least a part of the support portion 71 is fixedly held inside the support body 60, thereby 50 is supported by the support body 60.
  • the support body 60 is disposed at least on both sides in the extending direction Y with respect to the joint portion 70 so as to be separated from the joint portion 70 and provided on both sides sandwiching the joint portion 70.
  • a pair of support portions 71 are integrally supported.
  • one support portion 71 of each bus bar 50 is connected to the support portion 71 of the other bus bar 50 inside the support body 60 and protrudes from the support body 60. It is connected to the arranged connection terminal (rotary electric machine connection terminal 93 or DC power supply connection terminal 94). Further, the other support part 71 of each bus bar 50 is fixedly held inside the support body 60 without being connected to the support part 71 of the other bus bar 50, and as shown in FIG. A bent portion 72 that bends toward the other side is formed on the other support portion 71.
  • a plurality of (two or three in this example) bus bars 50 in which the support portions 71 are connected to each other inside the support body 60 and the corresponding connection terminals 93 and 94 are integrally formed on the same plate. It is formed by a member. That is, each of a plurality of (in this example, five) current paths indicated by thick solid lines in FIG. 2 is a single having a plurality of bus bars 50 and connection terminals (rotating electrical machine connection terminals 93 or DC power supply connection terminals 94). It is formed of a plate member.
  • the support body 60 includes a fastening portion 61 at a position corresponding to the fastening portion 44 provided in the base member 41, and the support body 60 and the base member 41 are connected by the fastening portions 44 and 61.
  • the inverter module 3 is formed integrally.
  • each of the fastening portion 61 of the support body 60 and the fastening portion 44 of the base member 41 is an insertion hole for a fastening bolt (not shown), and the support body 60 and the base member 41 are integrated with the fastening bolt. Is fixed to another member (for example, a case member).
  • the joining surface 70 a of the bus bar 50 is pressed in the + Z direction with respect to the joining surface 90 a of the electrode member 90.
  • the lower surface of the support portion 71 is positioned below the bonding surface 90 a of the electrode member 90.
  • the deformation of the joint portion 70 can be suppressed by absorbing the difference between the height of the lower surface of the support portion 71 and the height of the joint surface 90a by the deformation of the connecting portion 80.
  • the bus bar The 50 joining surfaces 70a and the joining surface 90a of the electrode member 90 can be satisfactorily brought into surface contact.
  • a joining process for example, a laser welding process, a resistance welding process, a brazing process, etc.
  • a joining process between the joining portion 70 of the bus bar 50 and the electrode member 90 is performed, and the bus bar 50 and the electrode member 90 are joined.
  • the state where the bus bar 50 is pressed against the electrode member 90 is maintained even after execution of the joining step. That is, in the present embodiment, both of the pair of support portions 71 included in the bus bar 50 are supported at the time of joining to the electrode member 90 and are also supported by the support body 60 after the joining.
  • connection part 80 which is the principal part of this invention is demonstrated with reference to FIG.4 and FIG.5.
  • the bus bar 50 has one connecting portion 80 on each side in the extending direction Y across the joint portion 70.
  • first connecting portion 81 the connecting portion 80 positioned on the + Y direction side
  • second connecting portion 82 the connecting portion 80 positioned on the ⁇ Y direction side.
  • two types of bus bars 50, the first bus bar 51 and the second bus bar 52 are provided.
  • connection part 80 has the 1st recessed part 21 in which the 1st side edge part 11 dented toward the 2nd direction X2 side, and the 2nd side edge part 12 in the 1st direction X1.
  • a second recess 22 that is recessed toward the side is formed.
  • the side edge part 10 is a part which demarcates (divides) the edge part of the bus-bar 50 by planar view (up-down direction Z view).
  • the 1st side edge part 11 demarcates the edge part of the 1st direction X1 side which is one side of the orthogonal direction X extended in the junction part 70, and a pair of support part provided in the both sides which pinched
  • the second side edge portion 12 defines (divides) an edge portion on the second direction X2 side opposite to the first direction X1 in the joint portion 70, and a pair of portions provided on both sides sandwiching the joint portion 70.
  • the side edge portion 10 is continuous between the support portions 71.
  • the shape of the connecting portion 80 is such that the band-shaped member extending in the extending direction Y with a constant width is formed in the thickness direction at the location where the first concave portion 21 is formed. In the entire region in the (vertical direction Z), the shape is notched inward from the first direction X1 side, and the strip-shaped member extending in the extending direction Y with a constant width is formed in the thickness direction at the portion where the second recess 22 is formed. Thus, the shape is notched inward from the second direction X2 side.
  • such a recessed part 20 can be formed by punching etc., for example.
  • the first concave portion 21 and the second concave portion 22 are formed so as to have overlapping portions when viewed in the extending direction Y, and in this example, only a part thereof is overlapped when viewed in the extending direction Y. ing. That is, the first concave portion 21 and the second concave portion 22 have portions where the positions in the extending orthogonal direction X are common. And in the region sandwiched between the first concave portion 21 and the second concave portion 22, the portion partitioned by the side edge portion 10 on both the joint portion 70 side and the support portion 71 side along the extending direction Y. A certain extending direction partition part 25 is formed. In addition, in FIG. 4 etc., in order to make an understanding of invention easy, the extending direction division part 25 is shaded.
  • the extending direction partitioning portion 25 is formed in a region sandwiched between the first concave portion 21 opening on the first direction X1 side and the second concave portion 22 opening on the second direction X2 side. . Therefore, the extending direction partitioning portion 25 is partitioned by the first side edge portion 11 on one side of the joining portion 70 side and the supporting portion 71 side along the extending direction Y, and the second side edge portion on the other side. 12.
  • the “opening portion” of the concave portion 20 means that the connecting portion 80 extends in a band shape in the extending direction Y with a constant width (the same width as that of the joint portion 70 or the support portion 71).
  • the “bottom portion” of the concave portion 20 refers to an end portion on the opposite side to the opening portion in the extending orthogonal direction X.
  • the configuration of the extending direction section 25 will be described in more detail.
  • the region along the extending direction Y in which the first concave portion 21 is formed and the region along the extending direction Y in which the second concave portion 22 is formed. are different positions in the extending direction Y.
  • both the first recess 21 and the second recess 22 are formed in parallel with the extending orthogonal direction X in the depth direction (the direction connecting the opening and the bottom in plan view).
  • the width in the direction (width direction) perpendicular to the depth direction in plan view is uniformly formed as a whole.
  • the region along the extending direction Y in which the first recess 21 is formed and the extending direction Y in which the second recess 22 is formed. are separated from each other in the extending direction Y without overlapping each other.
  • the first recess 21 and the second recess 22 are formed to have the same depth (length in the extending orthogonal direction X) except for an offset connecting portion 83 (see FIG. 5) described later. Yes.
  • the extending direction partitioning portion 25 is formed so as to extend along the extending orthogonal direction X, and more specifically, is formed so as to extend in parallel with the extending orthogonal direction X.
  • “extends along” in a certain direction means that the direction of the member is not limited to a shape parallel to the reference direction, and the member is substantially the same. In other words, it is used as a concept including a case where the member extends parallel to the reference direction, in other words, a case where the member extends parallel to the reference direction. That is, even if the extending direction of the member is a direction intersecting the reference direction, if the crossing angle is slight (for example, less than 5 degrees or less than 10 degrees), the member is aligned along the reference direction. Suppose that it extends.
  • the extending direction partitioning portion 25 is formed such that at least a part of the extending direction Y is narrower than the extending orthogonal direction X of the joint 70.
  • all the portions in the extending direction partition portion 25 are formed so that the width in the extending direction Y is narrower than the width in the extending orthogonal direction X of the joint portion 70.
  • the width of the support portion 71 in the extending orthogonal direction X is basically the same as the width of the joining portion 70 in the extending orthogonal direction X.
  • the width in the extending direction Y of the extending direction partition portion 25 is approximately the same as the width in the extending direction Y of the first recess 21 and the second recess 22, and more specifically. Is set to a value between the width of the first recess 21 and the width of the second recess 22.
  • each of the first recess 21 and the second recess 22 extends in the width direction (Y direction) and the side edge portion 10 extending in the depth direction (X direction) at the bottom.
  • the side edge portion 10 is connected to the side edge portion 10 via an arcuate portion, whereby the extending direction partitioning portion 25 has a slight width in the extending direction Y at the position in the extending orthogonal direction X corresponding to the bottom portion. It is greatly formed.
  • such an arc-shaped portion is not formed, and the shape of the side edge portion 10 forming the concave portion 20 in a plan view can be a bent shape.
  • One end portion of the extending direction partitioning portion 25 in the extending orthogonal direction X is connected to the joining portion extending portion 26 extending from the end portion toward the joining portion 70 side.
  • the joint-side extending portion 26 is a portion that connects the extending-direction partitioning portion 25 in the connecting portion 80 to the joining portion 70, and the extending-direction partitioning portion 25 is joined via the joining-portion-side extending portion 26. It is connected to the part 70.
  • the other end portion of the extending direction partitioning portion 25 in the extending orthogonal direction X is connected to the supporting portion side extending portion 27 extending from the end portion to the supporting portion 71 side.
  • the support part side extension part 27 is a part that connects the extension direction partition part 25 in the connecting part 80 to the support part 71, and the extension direction partition part 25 supports via the support part side extension part 27. It is connected to the part 71.
  • each of the joint portion side extending portion 26 and the support portion side extending portion 27 is formed to extend along the extending direction Y, specifically, to extend parallel to the extending direction Y.
  • the edge part by the side of the junction part 70 of the junction part extension part 26 comprises the boundary part of the connection part 80 and the junction part 70, and this boundary part is the extension in the junction part 70 in this example. It is formed at the end in the orthogonal direction X.
  • the end portion of the support portion side extending portion 27 on the support portion 71 side constitutes a boundary portion between the connecting portion 80 and the support portion 71, and in this example, this boundary portion extends in the support portion 71. It is formed at the end in the orthogonal direction X.
  • the joint portion extending portion 26 and the support portion extending portion 27 are connected to opposite sides in the extending orthogonal direction X with respect to the extending direction partitioning portion 25.
  • the joint portion extending portion 26 is a narrow portion whose width in the extending orthogonal direction X is narrower than that of the joint portion 70 in the portion on the joint portion 70 side in the extending direction Y (the position where the recess 20 is formed). 28, and the end of the narrow portion 28 on the side of the joining portion 70 constitutes a boundary portion between the connecting portion 80 and the joining portion 70.
  • the support portion side extending portion 27 includes a narrow portion 28 whose width in the extending orthogonal direction X is narrower than that of the joint portion 70 at the portion on the support portion 71 side in the extending direction Y (position where the recess 20 is formed).
  • the end of the narrow part 28 on the support part 71 side constitutes a boundary part between the connecting part 80 and the support part 71.
  • the connecting portion 80 is formed so that the width in the extending orthogonal direction X is narrower than that of the joint portion 70 in at least a part of the region along the extending direction Y (that is, the portion where the narrow portion 28 is formed).
  • the extending direction partitioning portion 25 and the narrow portion 28 have slightly overlapping portions, strictly speaking, but are formed in different portions in the connecting portion 80.
  • the configuration of the first bus bar 51 and the second bus bar 52 including the connecting portion 80 as described above will be described.
  • the first connecting portion 81 in the first connecting portion 81, the first concave portion 21 is a joined portion rather than the second concave portion 22.
  • the second connecting portion 82 the second recess 22 is formed closer to the joint 70 than the first recess 21.
  • the width in the extending direction Y of the first recessed portion 21 and the second recessed portion 22 that is located on the joint portion 70 side is the same.
  • the first bus bar 51 and the second bus bar 52 are also common in that they are formed wider than the other (in this example, about twice as wide).
  • the shape of the first connecting portion 81 and the second connecting portion 82 in plan view is based on the center of gravity G of the joining portion 70 (joining surface 70 a) (symmetrical center). ) And are symmetrical with respect to each other.
  • the pair of support portions 71 provided on both sides of the joint portion 70 are arranged at the same position in the extending orthogonal direction X, and the first bus bar 51 extends along the extending direction Y. It is formed in a straight line.
  • the shape in the planar view of the 1st connection part 81 and the 2nd connection part 82 is made into an asymmetrical shape mutually.
  • the second connecting portion 82 of the second bus bar 52 is an offset connecting portion 83 having an offset portion that offsets the extending direction Y of the bus bar 50 in the extending orthogonal direction X.
  • the offset portion is formed in a region sandwiched between the first recess 21 and the second recess 22. That is, the offset portion is formed integrally with the extending direction partition portion 25.
  • the shape in the planar view of the 1st connection part 81 and the 2nd connection part 82 is a shape which shifted the shape symmetrical with respect to each other in the orthogonal direction X extended.
  • the extending direction Y is arranged at different positions in the extending orthogonal direction X on the joining portion 70 side and the support portion 71 side
  • the second connecting portion 82 is disposed on both sides of the joining portion 70.
  • the pair of support portions 71 provided are arranged at different positions in the extending orthogonal direction X.
  • Second Embodiment A second embodiment of the present invention will be described with reference to FIG.
  • the structure which concerns on this embodiment and each embodiment demonstrated in order below is the same as that of said 1st embodiment fundamentally. Therefore, in the following description of each embodiment, the difference from the first embodiment will be mainly described, and the points not particularly specified are the same as those in the first embodiment.
  • the first concave portion 21 is formed closer to the joint portion 70 than the second concave portion 22.
  • the first concave portion 21 is formed closer to the joint portion 70 than the second concave portion 22 in each of the first connecting portion 81 and the second connecting portion 82.
  • variety and depth of the recessed part 20 differ in the 1st connection part 81 and the 2nd connection part 82, etc. by planar view of the 1st connection part 81 and the 2nd connection part 82 It is also possible to make these shapes into shapes that are neither point-symmetric nor line-symmetric with respect to each other (that is, an asymmetric shape).
  • the first concave portion 21 is formed closer to the joint portion 70 than the second concave portion 22 in each of the first connecting portion 81 and the second connecting portion 82. It can be set as the structure made.
  • first connecting portion 81 of the first bus bar 51 will be described as an example, but the second connecting portion 82 of the first bus bar 51 and the second bus bar 52
  • the connecting portions 81 and 82 can be similarly configured.
  • shape of the side edge portion 10 forming the recess 20 in a plan view is a shape bent in a polygonal line shape, but the side edge portion is the same as in the first embodiment. It is also possible to adopt a configuration in which an arc-shaped portion is formed in ten bent portions (bent portions).
  • the 2nd recessed part 22 is formed in the junction part 70 side rather than the 1st recessed part 21.
  • the first recess 21 and the second recess 22 are formed to have the same width in the extending direction Y.
  • illustration is omitted, it is also possible to adopt a configuration in which the width in the extending direction Y of the first concave portion 21 and the second concave portion 22 located on the joint portion 70 side is narrower than the other. .
  • the width in the extending direction Y of the extending direction partitioning portion 25 is not the same as the width in the extending direction Y of the first recessed portion 21 and the second recessed portion 22, and the extending portions of these recessed portions 20. It is formed wider than the width in the direction Y.
  • the concave portion 20 (second concave portion 22 in this example) located on the joint portion 70 side is the concave portion 20 (first concave portion 21 in this example) located on the support portion 71 side.
  • the length in the extending orthogonal direction X is shorter (that is, shallower).
  • the recess 20 (second recess 22 in this example) located on the joint portion 70 side is more than the recess 20 (first recess 21 in this example) located on the support portion 71 side.
  • the length in the extending orthogonal direction X is long (that is, deep). In order to provide such a configuration, in the configuration shown in FIGS.
  • the narrow portion 28 formed at the same position in the extending direction Y as the first recess 21, and the first The narrow portion 28 formed at the same position in the extending direction Y as the two concave portions 22 has a different width in the extending orthogonal direction X.
  • the extending direction partitioning portion 25 has a bent portion and extends in the extending orthogonal direction X. In addition to the portion extending along, it has a portion extending along the extending direction Y. Accordingly, without increasing the width of the connecting portion 80 in the extending orthogonal direction X, the entire length of the connecting portion 80 is lengthened to improve the ease of deformation in the connecting portion 80, and the upper limit of the deformation amount of the connecting portion 80. It is possible to increase.
  • the “total length of the connecting portion 80” means the length along the current path in the connecting portion 80, that is, the end portion on the joining portion 70 side and the end portion on the support portion 71 side of the connecting portion 80. This means the shortest path length connecting through the inside of.
  • a third recess 23 is formed in addition to the first recess 21 and the second recess 22, a third recess 23 is formed.
  • the third concave portion 23 is the concave portion 20 that opens to the second direction X2 side, like the second concave portion 22, and the second concave portion 22, the first concave portion from the joint portion 70 toward the support portion 71 side. 21 and the third recess 23 are arranged in this order.
  • the extending direction partitioning portion 25 has the same side edge portion 10 (second side in this example) on both sides of the joining portion 70 side and the supporting portion 71 side along the extending direction Y. Having a portion delimited by the edge 12). Further, in the example shown in FIG.
  • a part of the narrow portion 28 is integrally formed with the extending direction partitioning portion 25 in a form included in the extending direction partitioning portion 25.
  • a portion (a portion corresponding to the joint portion extending portion 26) that connects the extending direction partitioning portion 25 in the joint portion 80 to the joint portion 70, and a joint portion 80.
  • the portion connecting the extending direction partition portion 25 to the support portion 71 (the portion corresponding to the support portion side extending portion 27) is the same side in the extending orthogonal direction X with respect to the extending direction partition portion 25 ( In this example, it is connected in the first direction X1 side).
  • the first recess 21 is formed with a shallow depth (specifically, about half), and the second recess 22 and the third recess 23 extend in the opening side portion. It can also be set as the structure (refer FIG. 12) integrally formed as the 2nd recessed part 22 so that it may mutually communicate with Y. That is, in the example shown in FIG. 12, the second recess 22 is a step-like recess that is deep on both sides in the extending direction Y and shallow in the center.
  • a fourth recess 24 is further formed.
  • the 4th recessed part 24 is made into the recessed part 20 opened to the 1st direction X1 side like the 1st recessed part 21, and the 2nd recessed part 22 and the 1st recessed part toward the support part 71 side from the junction part 70. 21, the third recess 23, and the fourth recess 24 are arranged in this order.
  • the part connecting the current direction partition part 25 to the support part 71 (the part corresponding to the support part side extension part 27) is connected to the opposite side in the extending orthogonal direction X with respect to the extension direction partition part 25. ing.
  • each of the plurality of recesses 20 is separated in the extending direction Y without overlapping each other when viewed in the extending orthogonal direction X. Formed in a region (region along the extending direction Y).
  • the extending direction partitioning portion 25 extends along the extending orthogonal direction X. Is formed so as to extend in a direction (crossing direction) inclined with respect to the orthogonal direction X extending so as not to be considered.
  • each of the first recess 21 and the second recess 22 is formed such that the width in the extending direction Y of the bottom is wider than the opening.
  • the side edge part 10 which divides each of the 1st recessed part 21 and the 2nd recessed part 22 extends in parallel with the extension orthogonal direction X, and the part which divides the side away from the other recessed part 20 in the extending direction Y is extended.
  • the portion that divides the side close to the other concave portion 20 in the extending direction Y (the portion that divides the extending direction dividing portion 25) is closer to the other concave portion 20 in the extending direction Y as it goes from the opening to the bottom. It is formed in a facing shape.
  • the region along the extending direction Y in which the first recess 21 is formed and the region along the extending direction Y in which the second recess 22 is formed are in the extending orthogonal direction. Although these positions are different from each other in the extending direction Y as viewed in X, these two regions partially overlap in the extending direction Y as viewed in the extending orthogonal direction X. Specifically, the region along the extending direction Y where the opening of the first recess 21 (the end on the first direction X1 side) is formed, and the opening of the second recess 22 (on the second direction X2 side). Are separated in the extending direction Y without overlapping each other when viewed in the extending orthogonal direction X.
  • the region along the extending direction Y where the bottom of the first recess 21 (the end on the second direction X2 side) is formed and the bottom of the second recess 22 (the end on the first direction X1 side) The regions along the extending direction Y that are formed partially overlap each other in the extending direction Y when viewed in the extending orthogonal direction X.
  • the connecting portion 80 is made longer by increasing the entire length of the connecting portion 80 without increasing the width in the extending orthogonal direction X or the extending direction Y of the connecting portion 80. It is possible to improve the easiness of deformation in the above and increase the upper limit of the deformation amount of the connecting portion 80.
  • each of the first recess 21 and the second recess 22 is formed so that the width in the extending direction Y of the opening is wider than the bottom.
  • the region along the extending direction Y where the first recess 21 is formed and the region along the extending direction Y where the second recess 22 is formed are at the same position in the extending direction Y. These two regions are completely overlapped (overlap in the entire area) when viewed in the extending orthogonal direction X.
  • the extending direction partitioning portion 25 is different from the example shown in FIG. 14 in that the joining portion 70 and the supporting portion 71 do not pass through the joining portion side extending portion 26 and the supporting portion side extending portion 27. Are directly connected to both.
  • the shape of the recess 20 is changed so that the extending direction partitioning portion 25 is bent and extended in a polygonal line in plan view as in the example shown in FIG. 16 or the example shown in FIG. 17. It is also possible to adopt a configuration formed in the above. Also in the examples shown in FIGS. 16 and 17, the extending direction of the extending direction partition portion 25 when viewed as a whole extends in the extending orthogonal direction X to the extent that it cannot be considered to extend along the extending orthogonal direction X. The direction is inclined (intersected) with respect to.
  • connection part 81 unlike the above-described embodiments, at least one of the boundary part between the connection part 80 and the joint part 70 and the boundary part between the connection part 80 and the support part 71 is:
  • the joint 70 or the support 71 is provided not at the end in the extending orthogonal direction X but at the intermediate portion.
  • the second concave portion 22 becomes a stepped concave portion that is shallow on the support portion 71 side and deep on the joint portion 70 side, and the boundary portion between the connecting portion 80 and the support portion 71 is an intermediate portion in the extending orthogonal direction X of the support portion 71. (In this example, it is located in the center).
  • the example shown in FIG. 19 corresponds to a shape in which the depth of the second recess 22 is shallow (specifically about half), contrary to the example shown in FIG.
  • the side is shallow and the support part 71 side is a deep stepped recess.
  • the boundary part of the connection part 80 and the junction part 70 is located in the intermediate part (central part in this example) of the extension orthogonal direction X in the junction part 70.
  • the example shown in FIG. 20 has a shape in which the entire connecting portion 80 (narrow portion 28) is shifted to the second direction X2 side in the example shown in FIG.
  • the center portion is a stepped recess having a deep central portion, and the connecting portion 80 is provided with a second recess 22 and a third recess 23 as the recess 20 opening toward the second direction X2.
  • both the boundary part of the connection part 80 and the junction part 70 and the boundary part of the connection part 80 and the support part 71 are the intermediate part (this example) of the extension part orthogonal direction X in the junction part 70 or the support part 71. In the center).
  • the example shown in FIG. 21 corresponds to a shape in which the depth of the third recess 23 is shallow (specifically, about half) in the example shown in FIG. 11, and the first recess 21 is a stepped recess. Yes. Thereby, the boundary part of the connection part 80 and the support part 71 is located in the intermediate part (the center part in this example) of the extending orthogonal direction X in the support part 71.
  • the example shown in FIG. 22 corresponds to a shape in which the depth of the second concave portion 22 is shallow (specifically, about half) in the example shown in FIG. 11, and the first concave portion 21 is a stepped concave portion. Yes. Thereby, the boundary part of the connection part 80 and the junction part 70 is located in the intermediate part (central part in this example) of the extension orthogonal direction X in the junction part 70.
  • FIG. 21 corresponds to a shape in which the depth of the third recess 23 is shallow (specifically, about half) in the example shown in FIG. 11,
  • Each of the examples shown in FIGS. 23 to 25 corresponds to a shape in which the depth of one or both of the second concave portion 22 and the fourth concave portion 24 is shallow (specifically, about half) in the example shown in FIG. Specifically, in the example shown in FIG. 23, the depth of the fourth recess 24 is reduced and the third recess 23 is a stepped recess, and the boundary between the connecting portion 80 and the support portion 71 is the support portion 71. Is located in the middle part (in this example, the central part) in the extending orthogonal direction X. In the example shown in FIG.
  • the depth of the second recess 22 is reduced, the first recess 21 is a stepped recess, and the boundary between the connecting portion 80 and the joint 70 extends in the extending orthogonal direction at the joint 70.
  • Located in the middle part of X (in this example, the central part).
  • the example shown in FIG. 25 corresponds to a combination of FIG. 23 and FIG. 24, and both the boundary portion between the connecting portion 80 and the joint portion 70 and the boundary portion between the connecting portion 80 and the support portion 71 are joined. It is located in the middle part (the center part in this example) of the extending orthogonal direction X in the part 70 or the support part 71.
  • FIG. 26 is a diagram of the first embodiment for comparison with the eighth embodiment.
  • the electrode member 90 is formed by bending a plate-like member.
  • the electrode member 90 has a U-shaped section having a bent portion 90c formed at two locations of the plate-like member.
  • the open end of the U-shaped section of the electrode member 90 is electrically connected to the semiconductor element (in this example, the switching element 31 and the diode element 32) directly or indirectly via the element substrate 42. ing.
  • the electrode member 90 includes a planar bus bar connection portion 90b arranged in parallel to the bus bar 50, a joint surface 90a formed on a surface of the bus bar connection portion 90b facing the bus bar 50, and a bus bar connection. It has a pair of bent portions 90c provided on both sides of the portion 90b, and a pair of side wall portions 90d that are portions extending from the respective bent portions 90c to the tip side.
  • the pair of bent portions 90c are bent to the same side so that the pair of side wall portions 90d extend to the same side with respect to the bus bar connecting portion 90b.
  • each bent portion 90c has a curved portion and is bent about 90 °. Therefore, each side wall part 90d is provided so as to extend in a direction (+ Z direction) orthogonal to the bus bar connection part 90b.
  • the orientation of the electrode member 90 is set so that the direction connecting the pair of bent portions 90c is parallel to the extending direction Y of the bus bar 50.
  • the embodiment of the present invention is not limited to this. It is preferable that the direction of the electrode member 90 is set so that the direction connecting the pair of bent portions 90c is a direction intersecting the extending direction Y of the bus bar 50.
  • the electrodes are connected so that the direction connecting the pair of bent portions 90 c is a direction orthogonal to the extending direction Y of the bus bar 50 (that is, a direction parallel to the extending orthogonal direction X). It is preferable that the orientation of the member 90 is set. By configuring in this way, it is possible to shorten the distance between the pair of connecting portions 80 of the bus bar 50 compared to the configuration shown in FIG.
  • the concave portion 20 located closest to the joint portion 70 is provided at a position that does not overlap with the bus bar connecting portion 90b and the bent portion 90c in plan view (viewed in the vertical direction Z). For this reason, in the example shown in FIG. 26, the concave portion 20 located closest to the joining portion 70 is provided at a position away from the end portion in the extending direction Y on the joining surface 90a toward the support portion 71 by a predetermined separation distance L3. It has been.
  • This separation distance L3 is set to a length corresponding to the length in the extending direction Y of the curved portion of the bent portion 90c. Therefore, in the example shown in FIG.
  • the length in the extending direction Y of the joining portion 70 of the bus bar 50 is longer than the length L1 in the extending direction Y of the joining surface 90a by a pair of separation distances L3. ing. That is, the length of the joining portion 70 in the extending direction Y is “L1 + 2 ⁇ L3”.
  • the direction connecting the pair of bent portions 90c is arranged to be parallel to the extending orthogonal direction X.
  • both end portions in the extending direction Y of the bus bar connecting portion 90b of the electrode member 90 are side edges of the plate-like member constituting the bus bar connecting portion 90b. Therefore, the bent portion 90c does not exist on the lower side (+ Z direction) of the connecting portion 80 of the bus bar 50, and the connecting portion 80 does not need to be provided at a position avoiding the bent portion 90c. Therefore, in the present embodiment, the concave portion 20 located closest to the joint portion 70 is provided at a position in contact with the end portion in the extending direction Y on the joint surface 90a.
  • the length of the joining portion 70 of the bus bar 50 in the extending direction Y is equal to the length L2 of the joining surface 90a in the extending direction Y.
  • the length L1 in the extending orthogonal direction X of the joint surface 90a is larger than the width L4 in the extending orthogonal direction X of the bus bar 50, but these lengths are equal.
  • the direction connecting the pair of bent portions 90c is a direction orthogonal to the extending direction Y of the bus bar 50 (a direction parallel to the extending orthogonal direction X).
  • the configuration in which the orientation of the electrode member 90 is set has been described as an example, but the embodiment of the present invention is not limited to this. It is also preferable to arrange the electrode member 90 so that the direction connecting the pair of bent portions 90c intersects the extending direction Y of the bus bar 50 at an angle other than 90 °.
  • the crossing angle between the direction connecting the pair of bent portions 90c and the extending direction Y of the bus bar 50 may be 45 °, 60 °, or the like.
  • connection member and the electrical connection device according to the present invention will be described. Note that the configurations disclosed in the following embodiments and the configurations disclosed in the respective embodiments described above can be applied in combination with the configurations disclosed in other embodiments as long as no contradiction arises. It is.
  • the first bus bar 51 is joined to the first electrode member 91 and the second bus bar 52 is joined to the second electrode member 92 as an example. did.
  • the embodiment of the present invention is not limited to this, and the arrangement position of the semiconductor elements (switching element 31 and diode element 32) on the element substrate 42 is shifted to the + X direction side, and the first electrode member 91 and the second electrode member 91 are arranged. It is also possible to replace the position of the electrode member 92 in the extending orthogonal direction X so that the first bus bar 51 is joined to the second electrode member 92 and the second bus bar 52 is joined to the first electrode member 91. .
  • the first bus bar 51 is electrically connected to both the collector electrode of the switching element 31 and the cathode electrode of the diode element 32 via the electrode member 90 (first electrode member 91 in this example).
  • the configuration in which the two bus bars 52 are electrically connected to both the emitter electrode of the switching element 31 and the anode electrode of the diode element 32 through the electrode member 90 (second electrode member 92 in this example) has been described as an example.
  • the embodiment of the present invention is not limited to this, and the first bus bar 51 is electrically connected to both the emitter electrode of the switching element 31 and the anode electrode of the diode element 32 via the electrode member 90, and the second bus bar. It is also possible to adopt a configuration in which 52 is electrically connected to both the collector electrode of the switching element 31 and the cathode electrode of the diode element 32 through the electrode member 90.
  • the configuration in which at least a part of the support part 71 is fixedly held inside the support body 60 has been described as an example, but at least a part of the support part 71 is an end surface of the support body 60 ( It can also be set as the structure fixed to the upper surface, the lower surface, or the side surface.
  • the configuration in which the support body 60 integrally supports a pair of support portions 71 provided on both sides of the joint portion 70 has been described as an example. It is also possible to adopt a configuration that is supported by different supports.
  • both of the pair of support portions 71 included in the bus bar 50 are supported by the support body 60 at the time of joining to the electrode member 90 and are also supported by the support body 60 after the joining.
  • the configuration is described as an example.
  • the embodiment of the present invention is not limited to this, and only one of the pair of support portions 71 included in the bus bar 50 is supported by the support body 60, and the other support portion 71 is electroded by a jig or the like. It can also be configured to be supported only at the time of joining to the member 90.
  • both of the pair of support portions 71 included in the bus bar 50 are not supported by the support body 60 and are arranged (separated) from the support body 60 independently. It is also possible to adopt a configuration that is supported only at the time of joining to 90. In this case, the bus bar module 1 may be configured not to include the support body 60.
  • the bus bar module 1 as the electrical connection device constitutes the inverter module 3 for controlling the rotating electrical machine 2 has been described as an example.
  • the electrical connection according to the present invention is described. It is also possible to apply the apparatus to a bus bar module that constitutes an inverter module for other uses or a bus bar module that constitutes a module other than the inverter module.
  • the connection member according to the present invention has been described as an example in which the connection member according to the present invention is applied to the bus bar 50 constituting the bus bar module 1, but the connection provided in other electrical connection devices other than the bus bar module.
  • the present invention can also be applied to members.
  • the present invention can be suitably used for a plate-like connection member that includes a joint portion joined to an electrode member and extends in a predetermined extending direction.
  • Busbar module (electrical connection device) 10 Side edge portion 21: First concave portion 22: Second concave portion 25: Extension direction partitioning portion 26: Joining portion side extending portion 27: Support portion side extending portion 50: Bus bar (connection member) 60: support body 70: joint part 71: support part 80: connection part 81: first connection part 82: second connection part 90: electrode member X: extending orthogonal direction X1: first direction X2: second direction Y: Extension direction

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Abstract

A connection member with which good surface contact with respect to an electrode member upon connection is easily achieved is embodied. A connector part (70) is provided with support parts (71) for providing support upon connection to an electrode member, which support parts (71) sandwich the connector part (70) on both sides, and linking parts (80) for linking the connector part (70) and the support parts (71); the linking parts (80) are provided with extension direction section parts (25) which are defined by side edge parts (10) on both the connector part (70) side and the support part (71) side in the extension direction (Y). The width of the linking parts (80) is formed to be less than that of the connector part (70) in at least one region along the extension direction (Y) in the direction (X) orthogonal to extension which is orthogonal to the extension direction (Y).

Description

接続部材及び電気的接続装置Connection member and electrical connection device
　本発明は、電極部材に接合される接合部を備えるとともに所定の延在方向に延びる板状の接続部材、及び当該接続部材を備えた電気的接続装置に関する。 The present invention relates to a plate-like connection member that includes a joint portion that is joined to an electrode member and extends in a predetermined extending direction, and an electrical connection device that includes the connection member.
　上記のような接続部材の従来技術として、例えば下記の特許文献１に記載された技術がある。この背景技術の欄の説明では、〔〕内に特許文献１における部材名及び符号を引用する。特許文献１に記載の構成では、接続部材〔外部接続用端子５０〕は、支持体〔樹脂ケース４０〕に支持される支持部側から接合の対象となる電極部材〔端子台６２ｂ〕に向かって延出し、先端部に当該電極部材に接合される接合部が形成されている。 As a conventional technique of the connecting member as described above, for example, there is a technique described in Patent Document 1 below. In the description of the background art section, the member names and symbols in Patent Document 1 are quoted in []. In the configuration described in Patent Document 1, the connection member [external connection terminal 50] is directed from the support portion side supported by the support body [resin case 40] toward the electrode member [terminal block 62b] to be joined. A joint portion that extends and is joined to the electrode member is formed at the tip portion.
　ところで、接続部材と電極部材との接合（例えばレーザ溶接による接合）の信頼性を高めるためには、接続部材と電極部材とが良好に面接触した状態で接合工程が実行されることが望ましい。しかしながら、特許文献１には、接合時における接続部材と電極部材との間の接触状態に言及した記載はなく、当然ながら、接合時に接続部材を電極部材に対して良好に面接触させるための手段について、特許文献１には何ら示されていない。 Incidentally, in order to increase the reliability of the connection between the connection member and the electrode member (for example, the connection by laser welding), it is desirable that the bonding process is performed in a state where the connection member and the electrode member are in good surface contact. However, in Patent Document 1, there is no description referring to the contact state between the connection member and the electrode member at the time of joining, and, of course, a means for making the connection member make good surface contact with the electrode member at the time of joining. Is not disclosed in Patent Document 1.
特開２０１０－１０３２２２号公報（図１等）JP 2010-103222 A (FIG. 1 etc.)
　そこで、接合時に電極部材に対して良好に面接触させることが容易な接続部材の実現が望まれる。 Therefore, it is desired to realize a connection member that can be easily brought into surface contact with the electrode member during bonding.
　本発明に係る、電極部材に接合される接合部を備えるとともに所定の延在方向に延びる板状の接続部材の特徴構成は、前記接合部を挟んだ両側に、前記電極部材への接合時に支持される支持部と、前記接合部と前記支持部とを連結する連結部と、を備え、前記連結部は、前記延在方向に沿った前記接合部側と前記支持部側との双方において側縁部により区画された延在方向区画部を備え、前記延在方向に沿った少なくとも一部の領域において前記延在方向に直交する延在直交方向の前記連結部の幅が、前記接合部よりも狭く形成されている点にある。 According to the present invention, the characteristic configuration of the plate-like connection member that includes the joint portion joined to the electrode member and extends in a predetermined extending direction is supported at the time of joining to the electrode member on both sides of the joint portion. A connecting portion that connects the connecting portion and the supporting portion, and the connecting portion is located on both the connecting portion side and the supporting portion side along the extending direction. An extending direction partition section partitioned by an edge, and the width of the connecting section in the extending orthogonal direction orthogonal to the extending direction in at least a part of the region along the extending direction is greater than that of the joint section. Is also narrowly formed.
　上記の特徴構成によれば、支持部を介して接合部を電極部材側に押圧することができるため、接合部に対して直接力を加えることなく、接合部を電極部材に対して押圧することができる。この際、支持部は接合部を挟んだ両側に備えられるため、接合部に対して一方側にのみ支持部が備えられる場合に比べて、支持部とは反対側において接合部が電極部材から浮き上がることを抑制して、接続部材を電極部材に対して良好に面接触させることが容易となっている。
　さらに、上記の特徴構成によれば、延在方向に沿った少なくとも一部の領域において延在直交方向の連結部の幅が接合部よりも狭く形成されるため、連結部の剛性は接合部に対して低くなり、電極部材に対する押圧時に連結部を積極的に変形させることができる。これにより、接合部の変形を抑制した状態で支持部を接合部に対して押圧方向側に位置させることができる。そして、上記の特徴構成によれば、このような連結部に延在方向区画部が備えられるため、延在方向区画部を備えない場合に比べて、連結部の大型化を抑制しつつ連結部の変形量を確保することが容易となっている。これらにより、接合部に作用する力が大きくなりすぎて接合部が変形したり浮き上がったりすることを抑制することができ、接合部と電極部材との良好な面接触を得ることができる。 According to said characteristic structure, since a junction part can be pressed to the electrode member side via a support part, a junction part is pressed with respect to an electrode member, without applying force directly with respect to a junction part. Can do. At this time, since the support portion is provided on both sides of the joint portion, the joint portion is lifted from the electrode member on the side opposite to the support portion as compared with the case where the support portion is provided only on one side of the joint portion. This is suppressed, and it is easy to bring the connecting member into good surface contact with the electrode member.
Furthermore, according to the above-described characteristic configuration, the width of the connecting portion in the extending orthogonal direction is narrower than the connecting portion in at least a part of the region along the extending direction. On the other hand, it becomes low, and the connecting portion can be positively deformed when pressed against the electrode member. Thereby, a support part can be located in the press direction side with respect to a junction part in the state which suppressed modification of a junction part. And according to said characteristic structure, since an extension direction division part is provided in such a connection part, compared with the case where an extension direction division part is not provided, it is a connection part, suppressing the enlargement of a connection part. It is easy to ensure the amount of deformation. As a result, it is possible to prevent the force acting on the joint from becoming excessively large and the joint from being deformed or lifted, and good surface contact between the joint and the electrode member can be obtained.
　ここで、前記延在方向区画部の少なくとも一部の前記延在方向の幅が、前記接合部の前記延在直交方向の幅よりも狭く形成されていると好適である。 Here, it is preferable that the width in the extending direction of at least a part of the extending direction partition portion is narrower than the width in the extending orthogonal direction of the joint portion.
　この構成によれば、延在方向区画部における連結部の変形のし易さを適切に確保して、連結部に必要な変形量を確保することが容易となる。 According to this configuration, it is easy to ensure the ease of deformation of the connecting portion in the extending direction partition portion and to secure the amount of deformation necessary for the connecting portion.
　また、前記連結部には、前記延在直交方向の一方側である第一方向側の側縁部が前記第一方向とは反対側の第二方向側へ向かって窪んだ第一凹部と、前記第二方向側の側縁部が前記第一方向側へ向かって窪んだ第二凹部とが、前記延在方向に見て一部が重複するように形成されており、前記延在方向区画部は、前記第一凹部と前記第二凹部とに挟まれた領域に形成されていると好適である。 Further, the connecting portion has a first recess in which a side edge portion on the first direction side which is one side of the extending orthogonal direction is recessed toward the second direction side opposite to the first direction, A second recessed portion in which a side edge portion on the second direction side is recessed toward the first direction side is formed so as to partially overlap when viewed in the extending direction, and the extending direction section The portion is preferably formed in a region sandwiched between the first recess and the second recess.
　この構成によれば、延在方向区画部を備える連結部の構成を簡素なものとすることができ、接続部材の製造コストを抑制することができる。 According to this configuration, the configuration of the connecting portion including the extending direction partitioning portion can be simplified, and the manufacturing cost of the connecting member can be suppressed.
　上記のように、前記延在方向区画部が、前記第一凹部と前記第二凹部とに挟まれた領域に形成されている構成において、前記接合部を挟んだ両側に設けられる一対の前記連結部の一方である第一連結部では、前記第一凹部が前記第二凹部よりも前記接合部側に形成され、一対の前記連結部の他方である第二連結部では、前記第二凹部が前記第一凹部よりも前記接合部側に形成されていると好適である。 As described above, in the configuration in which the extending direction partitioning portion is formed in a region sandwiched between the first recess and the second recess, a pair of the couplings provided on both sides sandwiching the joining portion In the first connection part which is one of the parts, the first recess is formed closer to the joint part than the second recess, and in the second connection part which is the other of the pair of connection parts, the second recess is It is preferable that the first recess is formed closer to the joint than the first recess.
　この構成によれば、連結部を介して接合部に加わる押圧力により接合部に発生する応力が、延在直交方向に偏ることを抑制して、接合部の変形を抑制することができる。 According to this configuration, the stress generated in the joint due to the pressing force applied to the joint via the connecting portion can be suppressed from being biased in the extending orthogonal direction, and deformation of the joint can be suppressed.
　上記のように、前記延在方向区画部が、前記第一凹部と前記第二凹部とに挟まれた領域に形成されている構成において、前記接合部を挟んだ両側に設けられる一対の前記連結部のそれぞれにおいて、前記第一凹部及び前記第二凹部の内の前記接合部側に位置する方の前記延在方向の幅が、他方よりも広く形成されていると好適である。 As described above, in the configuration in which the extending direction partitioning portion is formed in a region sandwiched between the first recess and the second recess, a pair of the couplings provided on both sides sandwiching the joining portion In each of the portions, it is preferable that the width in the extending direction of the first concave portion and the second concave portion located on the joint portion side is formed wider than the other.
　この構成によれば、第一凹部及び第二凹部の内の接合部側に位置する方の延在方向の幅が、他方よりも広く形成されるため、接合部と連結部との境界部近傍における連結部の変形のし易さを確保して、接合部の変形を抑制することができる。 According to this configuration, since the width in the extending direction of the first concave portion and the second concave portion located on the joint portion side is formed wider than the other, the vicinity of the boundary portion between the joint portion and the coupling portion It is possible to secure the ease of deformation of the connecting portion and to suppress the deformation of the joint portion.
　上記のように、前記延在方向区画部が、前記第一凹部と前記第二凹部とに挟まれた領域に形成されている構成において、前記延在直交方向に見て、前記第一凹部が形成されている前記延在方向に沿った領域と、前記第二凹部が形成されている前記延在方向に沿った領域とが、前記延在方向に異なる位置とされていると好適である。 As described above, in the configuration in which the extending direction partitioning portion is formed in a region sandwiched between the first recessed portion and the second recessed portion, the first recessed portion is viewed in the extending orthogonal direction. It is preferable that the region along the extending direction that is formed and the region along the extending direction in which the second concave portion is formed are different from each other in the extending direction.
　この構成によれば、延在方向区画部の長さを適切に確保して、連結部に必要な変形量を確保することが容易となる。 According to this configuration, it is easy to ensure the length of the extending direction partition portion appropriately and secure the amount of deformation necessary for the connecting portion.
　上記の各構成の接続部材において、前記延在方向区画部は、前記延在直交方向に延びるように形成され、前記延在方向区画部の前記延在直交方向の一方の端部に、当該端部から前記接合部側に延びる接合部側延在部が連結されているとともに、他方の端部に、当該端部から前記支持部側に延びる支持部側延在部が連結されていると好適である。 In the connection member having each configuration described above, the extending direction partitioning portion is formed to extend in the extending orthogonal direction, and the end of the extending direction partitioning portion is connected to one end in the extending orthogonal direction. It is preferable that a joint portion extending portion extending from the portion to the joint portion side is coupled and a support portion side extending portion extending from the end portion to the support portion side is coupled to the other end portion. It is.
　本願において、部材の形状に関し、ある方向に「延びる」とは、当該方向を基準方向として、部材の延在方向が前記基準方向に平行な形状に限らず、部材の延在方向が前記基準方向に交差する方向であっても、その交差角度が所定範囲内（例えば４５度未満や６０度未満）である形状も含む概念として用いている。 In the present application, regarding the shape of the member, “extending” in a certain direction is not limited to a shape in which the extending direction of the member is parallel to the reference direction, and the extending direction of the member is the reference direction. Even if the direction intersects with the angle, it is used as a concept including a shape whose angle of intersection is within a predetermined range (for example, less than 45 degrees or less than 60 degrees).
　この構成によれば、延在方向区画部の長さを適切に確保しつつ、連結部の構成を簡素なものとすることができる。 According to this configuration, it is possible to simplify the configuration of the connecting portion while appropriately securing the length of the extending direction partition portion.
　本発明に係る電気的接続装置の特徴構成は、上述したような構成の接続部材と、前記接続部材を支持する絶縁性の支持体と、を備え、前記支持体が、前記接合部を挟んだ両側に設けられる一対の前記支持部を一体的に支持するように構成されている点にある。 The characteristic configuration of the electrical connection device according to the present invention includes a connection member configured as described above, and an insulating support that supports the connection member, and the support sandwiches the joint. The pair of support portions provided on both sides are configured to be integrally supported.
　この特徴構成によれば、接合部に対する両側に均等に荷重がかかるように、支持部に対して押圧力を加えるのが容易となり、結果、接続部材を電極部材に対して良好に面接触させることが容易となる。 According to this characteristic configuration, it becomes easy to apply a pressing force to the support portion so that a load is equally applied to both sides of the joint portion, and as a result, the connection member can be satisfactorily brought into surface contact with the electrode member. Becomes easy.
本発明の第一の実施形態に係るインバータモジュールの分解斜視図である。It is a disassembled perspective view of the inverter module which concerns on 1st embodiment of this invention. 本発明の第一の実施形態に係るインバータ回路の構成を示す模式図である。It is a schematic diagram which shows the structure of the inverter circuit which concerns on 1st embodiment of this invention. 本発明の第一の実施形態に係るバスバーモジュールの平面図である。It is a top view of the bus-bar module which concerns on 1st embodiment of this invention. 本発明の第一の実施形態に係る第一バスバーの平面図である。It is a top view of the 1st bus bar concerning a first embodiment of the present invention. 本発明の第一の実施形態に係る第二バスバーの平面図である。It is a top view of the 2nd bus bar concerning a first embodiment of the present invention. 本発明の第一の実施形態に係るバスバーの電極部材への押圧前と押圧後の状態を示す概念図である。It is a conceptual diagram which shows the state before the press to the electrode member of the bus bar which concerns on 1st embodiment of this invention, and after a press. 本発明の第二の実施形態に係る第一バスバーの平面図である。It is a top view of the 1st bus bar concerning a second embodiment of the present invention. 本発明の第三の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part concerning a third embodiment of the present invention. 本発明の第四の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part which concerns on 4th embodiment of this invention. 本発明の第四の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part which concerns on 4th embodiment of this invention. 本発明の第五の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part which concerns on 5th embodiment of this invention. 本発明の第五の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part which concerns on 5th embodiment of this invention. 本発明の第五の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part which concerns on 5th embodiment of this invention. 本発明の第六の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part concerning a 6th embodiment of the present invention. 本発明の第六の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part concerning a 6th embodiment of the present invention. 本発明の第六の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part concerning a 6th embodiment of the present invention. 本発明の第六の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part concerning a 6th embodiment of the present invention. 本発明の第七の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part concerning a 7th embodiment of the present invention. 本発明の第七の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part concerning a 7th embodiment of the present invention. 本発明の第七の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part concerning a 7th embodiment of the present invention. 本発明の第七の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part concerning a 7th embodiment of the present invention. 本発明の第七の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part concerning a 7th embodiment of the present invention. 本発明の第七の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part concerning a 7th embodiment of the present invention. 本発明の第七の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part concerning a 7th embodiment of the present invention. 本発明の第七の実施形態に係る第一連結部の平面図である。It is a top view of the 1st connection part concerning a 7th embodiment of the present invention. 本発明の第一の実施形態に係るバスバーと電極部材との当接状態を示す概念図である。It is a conceptual diagram which shows the contact state of the bus bar and electrode member which concern on 1st embodiment of this invention. 本発明の第八の実施形態に係るバスバーと電極部材との当接状態を示す概念図である。It is a conceptual diagram which shows the contact state of the bus-bar and electrode member which concern on 8th embodiment of this invention.
１．第一の実施形態
　本発明に係る接続部材及び電気的接続装置の第一の実施形態について、図面を参照して説明する。ここでは、図１に示すように、本発明に係る接続部材をバスバー５０に適用し、本発明に係る電気的接続装置が、当該バスバー５０を備えるとともに、回転電機２（図２参照）を制御するためのインバータモジュール３を構成するバスバーモジュール１である場合を例として説明する。すなわち、本実施形態では、バスバー５０が本発明における「接続部材」に相当し、バスバーモジュール１が本発明における「電気的接続装置」に相当する。 1. First Embodiment A first embodiment of a connection member and an electrical connection device according to the present invention will be described with reference to the drawings. Here, as shown in FIG. 1, the connection member according to the present invention is applied to a bus bar 50, and the electrical connection device according to the present invention includes the bus bar 50 and controls the rotating electrical machine 2 (see FIG. 2). A case where the bus bar module 1 is included in the inverter module 3 is described as an example. That is, in this embodiment, the bus bar 50 corresponds to the “connection member” in the present invention, and the bus bar module 1 corresponds to the “electrical connection device” in the present invention.
　以下の説明では、バスバー５０を基準として「Ｘ方向」、「Ｙ方向」、及び「Ｚ方向」の各方向を定義している。具体的には、バスバー５０の接合部７０が備える接合面７０ａに直交する方向（上下方向）を「Ｚ方向」と定義している。また、バスバー５０の延在方向を「Ｙ方向」と定義し、接合面７０ａと平行な面内において延在方向Ｙに直交する方向（延在直交方向）を「Ｘ方向」と定義している。ここで、バスバー５０の延在方向Ｙは、後述する凹部２０（図４、図５参照）やオフセット連結部８３におけるオフセット部（図５参照）の配置箇所を除いたバスバー５０の部分の長手方向、言い換えれば、バスバー５０における一定幅で帯状に延びる部分（帯状部）の長手方向と一致する。 In the following description, each direction of “X direction”, “Y direction”, and “Z direction” is defined with the bus bar 50 as a reference. Specifically, the direction (vertical direction) orthogonal to the joint surface 70a provided in the joint portion 70 of the bus bar 50 is defined as the “Z direction”. Further, the extending direction of the bus bar 50 is defined as “Y direction”, and the direction orthogonal to the extending direction Y (extended orthogonal direction) is defined as “X direction” in a plane parallel to the joint surface 70a. . Here, the extending direction Y of the bus bar 50 is the longitudinal direction of the portion of the bus bar 50 excluding a later-described concave portion 20 (see FIGS. 4 and 5) and an offset portion (see FIG. 5) in the offset connecting portion 83. In other words, it coincides with the longitudinal direction of the portion (band-shaped portion) extending in a band shape with a constant width in the bus bar 50.
　また、以下の説明では、特に断らない限り、「上」は上下方向（Ｚ方向）に沿って電極部材９０からバスバー５０へ向かう側（図１における上側、－Ｚ方向）を指し、「下」は上下方向（Ｚ方向）に沿ってバスバー５０から電極部材９０へ向かう側（図１における下側、＋Ｚ方向）を指す。 In the following description, unless otherwise specified, “upper” refers to the side (upper side in FIG. 1, −Z direction) from the electrode member 90 to the bus bar 50 along the vertical direction (Z direction), and “lower”. Indicates the side (the lower side in FIG. 1, + Z direction) from the bus bar 50 toward the electrode member 90 along the vertical direction (Z direction).
　なお、以下の説明における各部材についての方向や位置に関する文言（例えば「平行」や「直交」等）は、製造上の誤差に応じたずれを含む概念として用いている。このような製造上の誤差は、例えば、寸法や取付位置の公差の範囲内のずれにより生じる。 In addition, the wording (for example, "parallel", "orthogonal" etc.) regarding the direction and position about each member in the following description is used as a concept including a deviation corresponding to a manufacturing error. Such a manufacturing error is caused by, for example, a deviation within a tolerance range of a dimension or a mounting position.
１－１．インバータモジュールの構成
　図１に示すように、インバータモジュール３は、バスバーモジュール１とスイッチングモジュール３３とを備えている。バスバーモジュール１は、スイッチングモジュール３３の上側に配置される。そして、バスバーモジュール１が備えるバスバー５０の接合部７０とスイッチングモジュール３３が備える電極部材９０とは、接合部７０の接合面７０ａを電極部材９０の接合面９０ａに対して上側から当接させた状態（図６（ｂ）参照）で、接合されている。これにより、図２に示すような、直流電力と交流電力との間で電力変換を行うインバータ回路（ブリッジ回路）が形成され、当該インバータ回路を介して、直流電源４から供給された電力により回転電機２を駆動し、或いは、回転電機２が発電した電力により直流電源４を充電する。 1-1. Configuration of Inverter Module As shown in FIG. 1, the inverter module 3 includes a bus bar module 1 and a switching module 33. The bus bar module 1 is disposed on the upper side of the switching module 33. And the joining part 70 of the bus bar 50 with which the bus-bar module 1 is equipped, and the electrode member 90 with which the switching module 33 is provided are the states which made the joining surface 70a of the joining part 70 contact | abut from the upper side with respect to the joining surface 90a of the electrode member 90. (See FIG. 6B). As a result, an inverter circuit (bridge circuit) that performs power conversion between DC power and AC power as shown in FIG. 2 is formed, and is rotated by the power supplied from the DC power supply 4 via the inverter circuit. The electric power source 2 is driven, or the DC power source 4 is charged with the electric power generated by the rotating electric machine 2.
　回転電機２は、本例では三相交流により動作する交流電動機とされ、このような回転電機２は、例えば、電動車両やハイブリッド車両等に駆動力源として備えられる。なお、図２における符号「５」及び符号「６」は、それぞれ、直流電源４の正極Ｐと負極Ｎとの間に並列接続される放電抵抗及び平滑コンデンサを表している。 In this example, the rotating electrical machine 2 is an AC motor that operates by three-phase alternating current, and the rotating electrical machine 2 is provided as a driving force source in, for example, an electric vehicle or a hybrid vehicle. 2 represent a discharge resistor and a smoothing capacitor connected in parallel between the positive electrode P and the negative electrode N of the DC power supply 4, respectively.
　図１に示すように、スイッチングモジュール３３は、ベース部材４１と素子基板４２とを備えている。ベース部材４１は、素子基板４２を載置するためのベースとなる板状の部材である。このベース部材４１は、本例では導電性の材料（例えば銅やアルミニウム等の金属材料、以下同様）で形成されており、ヒートシンクとしても機能する。素子基板４２は、上面が半導体素子（本例ではスイッチング素子３１及びダイオード素子３２）が載置される素子載置面とされ、本例では、素子基板４２は電気的絶縁部材４３を介してベース部材４１の上面に配置されている。素子基板４２は、本例では導電性の材料で形成され、ヒートスプレッダとしても機能する。 As shown in FIG. 1, the switching module 33 includes a base member 41 and an element substrate 42. The base member 41 is a plate-like member that serves as a base on which the element substrate 42 is placed. In this example, the base member 41 is made of a conductive material (for example, a metal material such as copper or aluminum, the same applies hereinafter), and also functions as a heat sink. The element substrate 42 has an upper surface serving as an element mounting surface on which a semiconductor element (in this example, the switching element 31 and the diode element 32) is mounted. In this example, the element substrate 42 has a base via an electrical insulating member 43. It is disposed on the upper surface of the member 41. In this example, the element substrate 42 is formed of a conductive material and also functions as a heat spreader.
　本実施形態では、ベース部材４１の上面には、複数（本例では６つ）の素子基板４２が延在直交方向Ｘに一列に並ぶように配置されている。各素子基板４２の上面には、スイッチング素子３１及びダイオード素子３２がそれぞれ１つずつ載置されている。スイッチング素子３１は本例ではＩＧＢＴ（insulated gate bipolar transistor）とされている。スイッチング素子３１として、バイポーラ型、電界効果型、ＭＯＳ（metal oxide semiconductor）型等の種々の構造のパワートランジスタを用いることも可能である。また、ダイオード素子３２は、図２に示すように、スイッチング素子３１のエミッタ－コレクタ間に並列接続され、ＦＷＤ（Free Wheel Diode）として機能する。 In the present embodiment, a plurality (six in this example) of element substrates 42 are arranged on the upper surface of the base member 41 so as to be aligned in a row in the extending orthogonal direction X. One switching element 31 and one diode element 32 are mounted on the upper surface of each element substrate 42. The switching element 31 is an IGBT (insulated gate bipolar transistor) in this example. As the switching element 31, it is also possible to use power transistors of various structures such as a bipolar type, a field effect type, and a MOS (metal oxide semiconductor) type. As shown in FIG. 2, the diode element 32 is connected in parallel between the emitter and the collector of the switching element 31 and functions as FWD (Free （Wheel Diode).
　素子基板４２の上面には、当該素子基板４２に配置された半導体素子とバスバー５０とを電気的に接続するための電極部材９０が備えられている。電極部材９０は、導電性の材料で形成され、本例では、素子基板４２には、第一電極部材９１と第二電極部材９２との２種類の電極部材９０が配置されている。そして、第一電極部材９１及び第二電極部材９２のそれぞれの上面に、バスバー５０の接合面７０ａが当接する平面状の接合面９０ａが形成されている。本明細書では、第一電極部材９１と第二電極部材９２とを特に区別する必要がない場合には、これらを総称して電極部材９０という。 On the upper surface of the element substrate 42, an electrode member 90 for electrically connecting the semiconductor element disposed on the element substrate 42 and the bus bar 50 is provided. The electrode member 90 is formed of a conductive material, and in this example, two types of electrode members 90 including a first electrode member 91 and a second electrode member 92 are disposed on the element substrate 42. A flat joint surface 90 a is formed on the upper surface of each of the first electrode member 91 and the second electrode member 92 so that the joint surface 70 a of the bus bar 50 contacts. In the present specification, the first electrode member 91 and the second electrode member 92 are collectively referred to as the electrode member 90 when it is not necessary to distinguish between them.
　第一電極部材９１は、スイッチング素子３１のコレクタ電極と、ダイオード素子３２のカソード電極との双方の電極に導通する電極部材である。本例では、第一電極部材９１は素子基板４２の上面に載置され、スイッチング素子３１の下面に形成されたコレクタ電極と、ダイオード素子３２の下面に形成されたカソード電極との双方に対して、素子基板４２を介して導通する。この第一電極部材９１を介して、図２に示すように、スイッチング素子３１のコレクタ電極とダイオード素子３２のカソード電極とが、バスバーモジュール１により形成される電流経路（図２中の太線部分）に接続されている。 The first electrode member 91 is an electrode member that conducts to both the collector electrode of the switching element 31 and the cathode electrode of the diode element 32. In this example, the first electrode member 91 is placed on the upper surface of the element substrate 42, and both the collector electrode formed on the lower surface of the switching element 31 and the cathode electrode formed on the lower surface of the diode element 32. Conduction through the element substrate 42. As shown in FIG. 2, the current path formed by the bus bar module 1 through the first electrode member 91 and the cathode electrode of the diode element 32 (the bold line portion in FIG. 2). It is connected to the.
　第二電極部材９２は、スイッチング素子３１のエミッタ電極と、ダイオード素子３２のアノード電極との双方の電極に導通する電極部材である。本例では、第二電極部材９２は、スイッチング素子３１及びダイオード素子３２のそれぞれの上面に載置されるように配置され、スイッチング素子３１の上面に形成されたエミッタ電極と、ダイオード素子３２の上面に形成されたアノード電極との双方に対して、直接導通する。この第二電極部材９２を介して、図２に示すように、スイッチング素子３１のエミッタ電極とダイオード素子３２のアノード電極とが、バスバーモジュール１により形成される電流経路（図２中の太線部分）に接続されている。 The second electrode member 92 is an electrode member that is electrically connected to both the emitter electrode of the switching element 31 and the anode electrode of the diode element 32. In this example, the second electrode member 92 is disposed so as to be placed on the upper surfaces of the switching element 31 and the diode element 32, and the emitter electrode formed on the upper surface of the switching element 31 and the upper surface of the diode element 32. Conduction is directly conducted to both the anode electrode formed on the substrate. As shown in FIG. 2, a current path formed by the bus bar module 1 through the second electrode member 92 and the anode electrode of the diode element 32 (the thick line portion in FIG. 2). It is connected to the.
　バスバーモジュール１は、図１に示すように、バスバー５０と、バスバー５０を支持する支持体６０とを備えている。バスバー５０は、導電性の材料で形成され、本例では、バスバーモジュール１には、第一バスバー５１（図４参照）及び第二バスバー５２（図５参照）の２種類のバスバー５０が備えられている。具体的には、バスバーモジュール１は、第一バスバー５１及び第二バスバー５２のそれぞれを６個ずつ備えている。そして、本例では、第一バスバー５１が第一電極部材９１に接合され、第二バスバー５２が第二電極部材９２に接合されている。本明細書では、第一バスバー５１と第二バスバー５２とを特に区別する必要がない場合には、これらを総称してバスバー５０という。 The bus bar module 1 includes a bus bar 50 and a support body 60 that supports the bus bar 50 as shown in FIG. The bus bar 50 is formed of a conductive material. In this example, the bus bar module 1 includes two types of bus bars 50, a first bus bar 51 (see FIG. 4) and a second bus bar 52 (see FIG. 5). ing. Specifically, the bus bar module 1 includes six first bus bars 51 and six second bus bars 52. In this example, the first bus bar 51 is joined to the first electrode member 91, and the second bus bar 52 is joined to the second electrode member 92. In this specification, when it is not necessary to distinguish the 1st bus bar 51 and the 2nd bus bar 52 in particular, these are named generically and are called the bus bar 50.
　バスバー５０は、図３に示すように、支持体６０から露出している部分（実線部分）において電極部材９０に接合される接合部７０を備えるとともに、所定の延在方向（本例ではＹ方向）に延びる板状に形成されている。そして、バスバー５０は、接合部７０を挟んだ両側に、電極部材９０への接合時に支持される支持部７１（図３における破線部分を含む部分）と、接合部７０と支持部７１とを連結する連結部８０と、を備えている。後述するように、連結部８０には複数（本例では２つ）の凹部２０が形成されており、最も接合部７０側に位置する凹部２０と、最も支持部７１側に位置する凹部２０と、により延在方向Ｙの両側を区画される部分（凹部２０の形成位置を含む）が、連結部８０とされている。なお、連結部８０の詳細な構成については、後の「２．連結部の構成」の項で説明する。 As shown in FIG. 3, the bus bar 50 includes a joint portion 70 that is joined to the electrode member 90 at a portion exposed from the support body 60 (solid line portion), and has a predetermined extending direction (Y direction in this example). ). And the bus bar 50 connects the support part 71 (part including the broken line part in FIG. 3) supported at the time of joining to the electrode member 90 on both sides of the joint part 70, and the joint part 70 and the support part 71. Connecting portion 80 to be connected. As will be described later, a plurality of (two in this example) concave portions 20 are formed in the connecting portion 80, and the concave portion 20 located closest to the joint portion 70 and the concave portion 20 located closest to the support portion 71 are provided. A portion (including a position where the recess 20 is formed) defined on both sides in the extending direction Y is defined as a connecting portion 80. The detailed configuration of the connecting unit 80 will be described later in “2. Configuration of connecting unit”.
　接合部７０は、図１、図３、図６に示すように、下面に平面状の接合面７０ａを有する板状に形成されている。本例では、接合部７０は、図４及び図５に示すように、延在方向Ｙの幅が延在直交方向Ｘの幅より大きな、延在方向Ｙに延びる帯状に形成されている。支持部７１も接合部７０と同様に板状に形成されている。本例では、図４及び図５に示すように、接合部７０と同様に支持部７１も延在方向Ｙに延びる帯状に形成されている。 As shown in FIGS. 1, 3, and 6, the bonding portion 70 is formed in a plate shape having a flat bonding surface 70 a on the lower surface. In this example, as shown in FIGS. 4 and 5, the joining portion 70 is formed in a strip shape extending in the extending direction Y, in which the width in the extending direction Y is larger than the width in the extending orthogonal direction X. The support portion 71 is also formed in a plate shape like the joint portion 70. In this example, as shown in FIG. 4 and FIG. 5, the support portion 71 is formed in a strip shape extending in the extending direction Y, similarly to the joint portion 70.
　支持体６０は、電気的絶縁性を有する材料（例えば樹脂等）で形成され、図６に示すように、支持部７１の少なくとも一部が支持体６０の内部に固定保持されることで、バスバー５０が支持体６０に支持されている。本実施形態では、図３に示すように、支持体６０は、接合部７０から離間して接合部７０に対して少なくとも延在方向Ｙの両側に配置され、接合部７０を挟んだ両側に設けられる一対の支持部７１を一体的に支持する。 The support body 60 is formed of an electrically insulating material (for example, resin), and as shown in FIG. 6, at least a part of the support portion 71 is fixedly held inside the support body 60, thereby 50 is supported by the support body 60. In the present embodiment, as shown in FIG. 3, the support body 60 is disposed at least on both sides in the extending direction Y with respect to the joint portion 70 so as to be separated from the joint portion 70 and provided on both sides sandwiching the joint portion 70. A pair of support portions 71 are integrally supported.
　本例では、図３に示すように、各バスバー５０の一方の支持部７１は、他のバスバー５０の支持部７１と支持体６０の内部で連結されるとともに、支持体６０から突出するように配置された接続端子（回転電機接続端子９３又は直流電源接続端子９４）に連結されている。また、各バスバー５０の他方の支持部７１は、他のバスバー５０の支持部７１と連結されることなく支持体６０の内部に固定保持されており、図６に示すように、先端部が上側へ向かうように屈曲する屈曲部７２が、当該他方の支持部７１に形成されている。 In this example, as shown in FIG. 3, one support portion 71 of each bus bar 50 is connected to the support portion 71 of the other bus bar 50 inside the support body 60 and protrudes from the support body 60. It is connected to the arranged connection terminal (rotary electric machine connection terminal 93 or DC power supply connection terminal 94). Further, the other support part 71 of each bus bar 50 is fixedly held inside the support body 60 without being connected to the support part 71 of the other bus bar 50, and as shown in FIG. A bent portion 72 that bends toward the other side is formed on the other support portion 71.
　本例では、支持部７１が支持体６０の内部で互いに連結される複数（本例では２つ又は３つ）のバスバー５０と、対応する接続端子９３，９４とが、一体的に同一の板状部材により形成されている。すなわち、図２において太実線で示す複数（本例では５つ）の電流経路のそれぞれは、複数のバスバー５０と接続端子（回転電機接続端子９３又は直流電源接続端子９４）とを有する単一の板状部材により形成されている。 In this example, a plurality of (two or three in this example) bus bars 50 in which the support portions 71 are connected to each other inside the support body 60 and the corresponding connection terminals 93 and 94 are integrally formed on the same plate. It is formed by a member. That is, each of a plurality of (in this example, five) current paths indicated by thick solid lines in FIG. 2 is a single having a plurality of bus bars 50 and connection terminals (rotating electrical machine connection terminals 93 or DC power supply connection terminals 94). It is formed of a plate member.
　支持体６０は、図１に示すように、ベース部材４１に設けられた締結部４４に対応する位置に締結部６１を備え、これらの締結部４４，６１により支持体６０とベース部材４１とが一体化されてインバータモジュール３が形成されている。本例では、支持体６０の締結部６１及びベース部材４１の締結部４４のそれぞれは、締結ボルト（図示せず）の挿通孔とされ、支持体６０とベース部材４１とは一体的に締結ボルトにより他の部材（例えばケース部材等）に固定される。 As shown in FIG. 1, the support body 60 includes a fastening portion 61 at a position corresponding to the fastening portion 44 provided in the base member 41, and the support body 60 and the base member 41 are connected by the fastening portions 44 and 61. The inverter module 3 is formed integrally. In this example, each of the fastening portion 61 of the support body 60 and the fastening portion 44 of the base member 41 is an insertion hole for a fastening bolt (not shown), and the support body 60 and the base member 41 are integrated with the fastening bolt. Is fixed to another member (for example, a case member).
　支持体６０とベース部材４１とが一体化された状態では、図６（ｂ）に示すように、バスバー５０の接合面７０ａが電極部材９０の接合面９０ａに対して＋Ｚ方向に押圧された状態となり、支持部７１の下面は電極部材９０の接合面９０ａより下側に位置する。この際、支持部７１の下面の高さと接合面９０ａの高さとの差を連結部８０の変形により吸収することで、接合部７０の変形を抑制することが可能となっており、結果、バスバー５０の接合面７０ａと電極部材９０の接合面９０ａとを良好に面接触させることが可能となっている。このような押圧状態でバスバー５０の接合部７０と電極部材９０との接合工程（例えばレーザ溶接工程、抵抗溶接工程、ロウ付け工程等）が実行され、バスバー５０と電極部材９０とが接合される。本例では、当該接合工程の実行後も、バスバー５０が電極部材９０に対して押圧された状態が維持される。すなわち、本実施形態では、バスバー５０が備える一対の支持部７１の双方は、電極部材９０への接合時に支持されるとともに、当該接合の後も支持体６０により支持される。 In the state in which the support body 60 and the base member 41 are integrated, as shown in FIG. 6B, the joining surface 70 a of the bus bar 50 is pressed in the + Z direction with respect to the joining surface 90 a of the electrode member 90. Thus, the lower surface of the support portion 71 is positioned below the bonding surface 90 a of the electrode member 90. At this time, the deformation of the joint portion 70 can be suppressed by absorbing the difference between the height of the lower surface of the support portion 71 and the height of the joint surface 90a by the deformation of the connecting portion 80. As a result, the bus bar The 50 joining surfaces 70a and the joining surface 90a of the electrode member 90 can be satisfactorily brought into surface contact. In such a pressed state, a joining process (for example, a laser welding process, a resistance welding process, a brazing process, etc.) between the joining portion 70 of the bus bar 50 and the electrode member 90 is performed, and the bus bar 50 and the electrode member 90 are joined. . In this example, the state where the bus bar 50 is pressed against the electrode member 90 is maintained even after execution of the joining step. That is, in the present embodiment, both of the pair of support portions 71 included in the bus bar 50 are supported at the time of joining to the electrode member 90 and are also supported by the support body 60 after the joining.
１－２．連結部の構成
　次に、本発明の要部である連結部８０の構成について、図４及び図５を参照して説明する。バスバー５０は、接合部７０を挟んだ延在方向Ｙの両側に連結部８０を１つずつ有している。ここで、接合部７０を挟んだ両側に設けられる一対の連結部８０の内、＋Ｙ方向側に位置する連結部８０を「第一連結部８１」とし、－Ｙ方向側に位置する連結部８０を「第二連結部８２」とする。本実施形態では、上述したように、第一バスバー５１及び第二バスバー５２の２種類のバスバー５０が備えられている。以下では、第一バスバー５１に備えられる連結部８０及び第二バスバー５２に備えられる連結部８０に共通する構成について説明した後、各バスバー５０に特有の構成について説明する。 1-2. Next, the structure of the connection part 80 which is the principal part of this invention is demonstrated with reference to FIG.4 and FIG.5. The bus bar 50 has one connecting portion 80 on each side in the extending direction Y across the joint portion 70. Here, of the pair of connecting portions 80 provided on both sides of the joint portion 70, the connecting portion 80 positioned on the + Y direction side is referred to as a “first connecting portion 81”, and the connecting portion 80 positioned on the −Y direction side. Is referred to as a “second connecting portion 82”. In the present embodiment, as described above, two types of bus bars 50, the first bus bar 51 and the second bus bar 52, are provided. Below, after demonstrating the structure common to the connection part 80 with which the 1st bus bar 51 is equipped, and the connection part 80 with which the 2nd bus bar 52 is equipped, the structure peculiar to each bus bar 50 is demonstrated.
　図４及び図５に示すように、連結部８０には、第一側縁部１１が第二方向Ｘ２側へ向かって窪んだ第一凹部２１と、第二側縁部１２が第一方向Ｘ１側へ向かって窪んだ第二凹部２２とが形成されている。ここで、側縁部１０は、平面視（上下方向Ｚ視）でバスバー５０の縁部を画定（区画）する部分である。そして、第一側縁部１１は、接合部７０において延在直交方向Ｘの一方側である第一方向Ｘ１側の縁部を画定し、接合部７０を挟んだ両側に設けられる一対の支持部７１の間に亘って連続する側縁部１０である。また、第二側縁部１２は、接合部７０において第一方向Ｘ１とは反対側の第二方向Ｘ２側の縁部を画定（区画）し、接合部７０を挟んだ両側に設けられる一対の支持部７１の間に亘って連続する側縁部１０である。 As shown in FIG.4 and FIG.5, the connection part 80 has the 1st recessed part 21 in which the 1st side edge part 11 dented toward the 2nd direction X2 side, and the 2nd side edge part 12 in the 1st direction X1. A second recess 22 that is recessed toward the side is formed. Here, the side edge part 10 is a part which demarcates (divides) the edge part of the bus-bar 50 by planar view (up-down direction Z view). And the 1st side edge part 11 demarcates the edge part of the 1st direction X1 side which is one side of the orthogonal direction X extended in the junction part 70, and a pair of support part provided in the both sides which pinched | interposed the junction part 70 71 is a side edge portion 10 that continues between 71. Further, the second side edge portion 12 defines (divides) an edge portion on the second direction X2 side opposite to the first direction X1 in the joint portion 70, and a pair of portions provided on both sides sandwiching the joint portion 70. The side edge portion 10 is continuous between the support portions 71.
　上記のような第一凹部２１及び第二凹部２２を備えることで、連結部８０の形状は、第一凹部２１の形成箇所においては、一定幅で延在方向Ｙに延びる帯状部材を厚さ方向（上下方向Ｚ）の全域で第一方向Ｘ１側から内側に切り欠いた形状とされ、第二凹部２２の形成箇所においては、一定幅で延在方向Ｙに延びる帯状部材を厚さ方向の全域で第二方向Ｘ２側から内側に切り欠いた形状とされる。なお、このような凹部２０は、例えば打ち抜き等により形成することができる。 By providing the first concave portion 21 and the second concave portion 22 as described above, the shape of the connecting portion 80 is such that the band-shaped member extending in the extending direction Y with a constant width is formed in the thickness direction at the location where the first concave portion 21 is formed. In the entire region in the (vertical direction Z), the shape is notched inward from the first direction X1 side, and the strip-shaped member extending in the extending direction Y with a constant width is formed in the thickness direction at the portion where the second recess 22 is formed. Thus, the shape is notched inward from the second direction X2 side. In addition, such a recessed part 20 can be formed by punching etc., for example.
　第一凹部２１と第二凹部２２とは、延在方向Ｙに見て重複する部分を有するように形成され、本例では、延在方向Ｙに見て一部のみが重複するように形成されている。すなわち、第一凹部２１と第二凹部２２とは、延在直交方向Ｘの位置が共通する部分を有する。そして、これら第一凹部２１と第二凹部２２とに挟まれた領域に、延在方向Ｙに沿った接合部７０側と支持部７１側との双方において側縁部１０により区画された部分である延在方向区画部２５が形成されている。なお、図４等においては発明の理解を容易にすべく、延在方向区画部２５に斜線ハッチングを施している。 The first concave portion 21 and the second concave portion 22 are formed so as to have overlapping portions when viewed in the extending direction Y, and in this example, only a part thereof is overlapped when viewed in the extending direction Y. ing. That is, the first concave portion 21 and the second concave portion 22 have portions where the positions in the extending orthogonal direction X are common. And in the region sandwiched between the first concave portion 21 and the second concave portion 22, the portion partitioned by the side edge portion 10 on both the joint portion 70 side and the support portion 71 side along the extending direction Y. A certain extending direction partition part 25 is formed. In addition, in FIG. 4 etc., in order to make an understanding of invention easy, the extending direction division part 25 is shaded.
　本実施形態では、延在方向区画部２５は、第一方向Ｘ１側に開口する第一凹部２１と、第二方向Ｘ２側に開口する第二凹部２２とに挟まれた領域に形成されている。そのため、延在方向区画部２５は、延在方向Ｙに沿った接合部７０側及び支持部７１側の一方側においては第一側縁部１１により区画され、他方側においては第二側縁部１２により区画される。なお、以下では、凹部２０について「開口部」とは、当該凹部２０の形成箇所において、連結部８０が一定幅（接合部７０又は支持部７１と同じ幅）で延在方向Ｙに帯状に延びていると想定した場合の側縁部１０の仮想線の位置を指し、凹部２０について「底部」とは、延在直交方向Ｘにおける開口部とは反対側の端部を指す。 In the present embodiment, the extending direction partitioning portion 25 is formed in a region sandwiched between the first concave portion 21 opening on the first direction X1 side and the second concave portion 22 opening on the second direction X2 side. . Therefore, the extending direction partitioning portion 25 is partitioned by the first side edge portion 11 on one side of the joining portion 70 side and the supporting portion 71 side along the extending direction Y, and the second side edge portion on the other side. 12. In the following description, the “opening portion” of the concave portion 20 means that the connecting portion 80 extends in a band shape in the extending direction Y with a constant width (the same width as that of the joint portion 70 or the support portion 71). In this case, the “bottom portion” of the concave portion 20 refers to an end portion on the opposite side to the opening portion in the extending orthogonal direction X.
　延在方向区画部２５の構成について更に詳細に説明する。本実施形態では、延在直交方向Ｘに見て、第一凹部２１が形成されている延在方向Ｙに沿った領域と、第二凹部２２が形成されている延在方向Ｙに沿った領域とが、延在方向Ｙに異なる位置とされている。また、本実施形態では、第一凹部２１及び第二凹部２２の双方は、深さ方向（平面視において開口部と底部とを結ぶ方向）が延在直交方向Ｘと平行に形成されているとともに、平面視において深さ方向に直交する方向（幅方向）の幅（本例では延在方向Ｙの幅）が全体的に一様に形成されている。すなわち、本実施形態では、延在直交方向Ｘに見て、第一凹部２１が形成されている延在方向Ｙに沿った領域と、第二凹部２２が形成されている延在方向Ｙに沿った領域とは、延在方向Ｙに互いに重複することなく分離されている。また、本実施形態では、後述するオフセット連結部８３（図５参照）を除き、第一凹部２１と第二凹部２２とは深さ（延在直交方向Ｘの長さ）が互いに等しく形成されている。 The configuration of the extending direction section 25 will be described in more detail. In the present embodiment, when viewed in the extending orthogonal direction X, the region along the extending direction Y in which the first concave portion 21 is formed and the region along the extending direction Y in which the second concave portion 22 is formed. Are different positions in the extending direction Y. In the present embodiment, both the first recess 21 and the second recess 22 are formed in parallel with the extending orthogonal direction X in the depth direction (the direction connecting the opening and the bottom in plan view). The width in the direction (width direction) perpendicular to the depth direction in plan view (in this example, the width in the extending direction Y) is uniformly formed as a whole. That is, in the present embodiment, when viewed in the extending orthogonal direction X, the region along the extending direction Y in which the first recess 21 is formed and the extending direction Y in which the second recess 22 is formed. Are separated from each other in the extending direction Y without overlapping each other. In the present embodiment, the first recess 21 and the second recess 22 are formed to have the same depth (length in the extending orthogonal direction X) except for an offset connecting portion 83 (see FIG. 5) described later. Yes.
　これにより、本実施形態では、延在方向区画部２５は、延在直交方向Ｘに沿って延びるように形成され、より具体的には、延在直交方向Ｘに平行に延びるように形成される。なお、本明細書において、部材の形状に関し、ある方向に「沿って延びる」とは、当該方向を基準方向として、部材の延在方向が当該基準方向に平行な形状に限らず、部材が実質的に当該基準方向に平行に延びる場合、言い換えれば、部材が当該基準方向に平行状に延びる場合を含む概念として用いている。すなわち、部材の延在方向が当該基準方向に交差する方向であっても、その交差角度が僅か（例えば５度未満や１０度未満等）である場合には、当該部材は基準方向に沿って延びているとする。 Accordingly, in the present embodiment, the extending direction partitioning portion 25 is formed so as to extend along the extending orthogonal direction X, and more specifically, is formed so as to extend in parallel with the extending orthogonal direction X. . In this specification, regarding the shape of a member, “extends along” in a certain direction means that the direction of the member is not limited to a shape parallel to the reference direction, and the member is substantially the same. In other words, it is used as a concept including a case where the member extends parallel to the reference direction, in other words, a case where the member extends parallel to the reference direction. That is, even if the extending direction of the member is a direction intersecting the reference direction, if the crossing angle is slight (for example, less than 5 degrees or less than 10 degrees), the member is aligned along the reference direction. Suppose that it extends.
　本実施形態では、延在方向区画部２５は、少なくとも一部の延在方向Ｙの幅が、接合部７０の延在直交方向Ｘの幅よりも狭く形成される。本例では、図４及び図５に示すように、延在方向区画部２５における全ての部分が、接合部７０の延在直交方向Ｘの幅よりも延在方向Ｙの幅が狭く形成されている。また、本例では、支持部７１の延在直交方向Ｘの幅は、基本的に、接合部７０の延在直交方向Ｘの幅と同一とされている。 In the present embodiment, the extending direction partitioning portion 25 is formed such that at least a part of the extending direction Y is narrower than the extending orthogonal direction X of the joint 70. In this example, as shown in FIGS. 4 and 5, all the portions in the extending direction partition portion 25 are formed so that the width in the extending direction Y is narrower than the width in the extending orthogonal direction X of the joint portion 70. Yes. In this example, the width of the support portion 71 in the extending orthogonal direction X is basically the same as the width of the joining portion 70 in the extending orthogonal direction X.
　具体的には、延在方向区画部２５の延在方向Ｙの幅は、本例では、第一凹部２１や第二凹部２２の延在方向Ｙの幅と同程度とされ、より具体的には、第一凹部２１の幅と第二凹部２２の幅との間の値に設定されている。なお、図４及び図５に示す例では、第一凹部２１及び第二凹部２２のそれぞれは、底部において、深さ方向（Ｘ方向）に延びる側縁部１０と幅方向（Ｙ方向）に延びる側縁部１０とが円弧状部を介して接続されており、これにより、延在方向区画部２５は、当該底部に対応する延在直交方向Ｘの位置において、延在方向Ｙの幅が僅かに大きく形成されている。なお、このような円弧状部が形成されておらず、凹部２０を形成する側縁部１０の平面視での形状を、折れ線状に屈曲した形状とすることも可能である。 Specifically, in this example, the width in the extending direction Y of the extending direction partition portion 25 is approximately the same as the width in the extending direction Y of the first recess 21 and the second recess 22, and more specifically. Is set to a value between the width of the first recess 21 and the width of the second recess 22. In the example shown in FIGS. 4 and 5, each of the first recess 21 and the second recess 22 extends in the width direction (Y direction) and the side edge portion 10 extending in the depth direction (X direction) at the bottom. The side edge portion 10 is connected to the side edge portion 10 via an arcuate portion, whereby the extending direction partitioning portion 25 has a slight width in the extending direction Y at the position in the extending orthogonal direction X corresponding to the bottom portion. It is greatly formed. In addition, such an arc-shaped portion is not formed, and the shape of the side edge portion 10 forming the concave portion 20 in a plan view can be a bent shape.
　延在方向区画部２５の延在直交方向Ｘの一方の端部には、当該端部から接合部７０側に延びる接合部側延在部２６が連結されている。接合部側延在部２６は、連結部８０における延在方向区画部２５を接合部７０に接続する部分であり、この接合部側延在部２６を介して、延在方向区画部２５が接合部７０に連結されている。また、延在方向区画部２５の延在直交方向Ｘの他方の端部には、当該端部から支持部７１側に延びる支持部側延在部２７が連結されている。支持部側延在部２７は、連結部８０における延在方向区画部２５を支持部７１に接続する部分であり、この支持部側延在部２７を介して、延在方向区画部２５が支持部７１に連結されている。本例では、接合部側延在部２６及び支持部側延在部２７のそれぞれは、延在方向Ｙに沿って延びるように、具体的には、延在方向Ｙに平行に延びるように形成されている。そして、接合部側延在部２６の接合部７０側の端部が、連結部８０と接合部７０との境界部を構成しており、本例ではこの境界部は、接合部７０における延在直交方向Ｘの端部に形成されている。また、支持部側延在部２７の支持部７１側の端部が、連結部８０と支持部７１との境界部を構成しており、本例ではこの境界部は、支持部７１における延在直交方向Ｘの端部に形成されている。本例では、接合部側延在部２６と支持部側延在部２７とは、延在方向区画部２５に対して延在直交方向Ｘにおける互いに反対側に接続されている。 One end portion of the extending direction partitioning portion 25 in the extending orthogonal direction X is connected to the joining portion extending portion 26 extending from the end portion toward the joining portion 70 side. The joint-side extending portion 26 is a portion that connects the extending-direction partitioning portion 25 in the connecting portion 80 to the joining portion 70, and the extending-direction partitioning portion 25 is joined via the joining-portion-side extending portion 26. It is connected to the part 70. Further, the other end portion of the extending direction partitioning portion 25 in the extending orthogonal direction X is connected to the supporting portion side extending portion 27 extending from the end portion to the supporting portion 71 side. The support part side extension part 27 is a part that connects the extension direction partition part 25 in the connecting part 80 to the support part 71, and the extension direction partition part 25 supports via the support part side extension part 27. It is connected to the part 71. In this example, each of the joint portion side extending portion 26 and the support portion side extending portion 27 is formed to extend along the extending direction Y, specifically, to extend parallel to the extending direction Y. Has been. And the edge part by the side of the junction part 70 of the junction part extension part 26 comprises the boundary part of the connection part 80 and the junction part 70, and this boundary part is the extension in the junction part 70 in this example. It is formed at the end in the orthogonal direction X. In addition, the end portion of the support portion side extending portion 27 on the support portion 71 side constitutes a boundary portion between the connecting portion 80 and the support portion 71, and in this example, this boundary portion extends in the support portion 71. It is formed at the end in the orthogonal direction X. In this example, the joint portion extending portion 26 and the support portion extending portion 27 are connected to opposite sides in the extending orthogonal direction X with respect to the extending direction partitioning portion 25.
　本例では、接合部側延在部２６は、延在方向Ｙにおける接合部７０側の部分（凹部２０の形成位置）において、延在直交方向Ｘの幅が接合部７０よりも狭い幅狭部２８を有しており、当該幅狭部２８の接合部７０側の端部が、連結部８０と接合部７０との境界部を構成している。また、支持部側延在部２７は、延在方向Ｙにおける支持部７１側の部分（凹部２０の形成位置）において、延在直交方向Ｘの幅が接合部７０よりも狭い幅狭部２８を有しており、当該幅狭部２８の支持部７１側の端部が、連結部８０と支持部７１との境界部を構成している。これにより、連結部８０は、延在方向Ｙに沿った少なくとも一部の領域（すなわち幅狭部２８の形成部分）において、延在直交方向Ｘの幅が接合部７０よりも狭く形成される。なお、本例では、延在方向区画部２５と幅狭部２８とは、厳密に言えば重複部分を僅かに有するが、連結部８０における互いに異なる部分に形成されている。 In this example, the joint portion extending portion 26 is a narrow portion whose width in the extending orthogonal direction X is narrower than that of the joint portion 70 in the portion on the joint portion 70 side in the extending direction Y (the position where the recess 20 is formed). 28, and the end of the narrow portion 28 on the side of the joining portion 70 constitutes a boundary portion between the connecting portion 80 and the joining portion 70. In addition, the support portion side extending portion 27 includes a narrow portion 28 whose width in the extending orthogonal direction X is narrower than that of the joint portion 70 at the portion on the support portion 71 side in the extending direction Y (position where the recess 20 is formed). The end of the narrow part 28 on the support part 71 side constitutes a boundary part between the connecting part 80 and the support part 71. Thereby, the connecting portion 80 is formed so that the width in the extending orthogonal direction X is narrower than that of the joint portion 70 in at least a part of the region along the extending direction Y (that is, the portion where the narrow portion 28 is formed). Note that, in this example, the extending direction partitioning portion 25 and the narrow portion 28 have slightly overlapping portions, strictly speaking, but are formed in different portions in the connecting portion 80.
　次に、上記のような連結部８０を備える第一バスバー５１及び第二バスバー５２の構成について説明する。図４及び図５に示すように、本実施形態では、第一バスバー５１及び第二バスバー５２に共通する特徴として、第一連結部８１では、第一凹部２１が第二凹部２２よりも接合部７０側に形成され、第二連結部８２では、第二凹部２２が第一凹部２１よりも接合部７０側に形成されている。更に、本実施形態では、第一連結部８１及び第二連結部８２のそれぞれにおいて、第一凹部２１及び第二凹部２２の内の接合部７０側に位置する方の延在方向Ｙの幅が、他方よりも広く（本例では２倍程度の幅に）形成されている点でも、第一バスバー５１と第二バスバー５２とが共通する。 Next, the configuration of the first bus bar 51 and the second bus bar 52 including the connecting portion 80 as described above will be described. As shown in FIGS. 4 and 5, in the present embodiment, as a feature common to the first bus bar 51 and the second bus bar 52, in the first connecting portion 81, the first concave portion 21 is a joined portion rather than the second concave portion 22. In the second connecting portion 82, the second recess 22 is formed closer to the joint 70 than the first recess 21. Furthermore, in this embodiment, in each of the first connecting portion 81 and the second connecting portion 82, the width in the extending direction Y of the first recessed portion 21 and the second recessed portion 22 that is located on the joint portion 70 side is the same. The first bus bar 51 and the second bus bar 52 are also common in that they are formed wider than the other (in this example, about twice as wide).
　次に、第一バスバー５１及び第二バスバー５２のそれぞれに特有の構成について、順に説明する。図４に示すように、第一バスバー５１については、第一連結部８１及び第二連結部８２の平面視での形状が、接合部７０（接合面７０ａ）の重心Ｇを基準（対称の中心）とする互いに点対称な形状とされている。また、第一バスバー５１については、接合部７０を挟んだ両側に設けられる一対の支持部７１は、延在直交方向Ｘにおいて互いに同じ位置に配置され、第一バスバー５１は延在方向Ｙに沿う一直線状に形成されている。 Next, a configuration unique to each of the first bus bar 51 and the second bus bar 52 will be described in order. As shown in FIG. 4, for the first bus bar 51, the shape of the first connecting portion 81 and the second connecting portion 82 in plan view is based on the center of gravity G of the joining portion 70 (joining surface 70 a) (symmetrical center). ) And are symmetrical with respect to each other. For the first bus bar 51, the pair of support portions 71 provided on both sides of the joint portion 70 are arranged at the same position in the extending orthogonal direction X, and the first bus bar 51 extends along the extending direction Y. It is formed in a straight line.
　一方、図５に示すように、第二バスバー５２については、第一連結部８１及び第二連結部８２の平面視での形状が、互いに非対称な形状とされている。具体的には、第二バスバー５２の第二連結部８２は、バスバー５０の延在方向Ｙを延在直交方向Ｘにオフセットさせるオフセット部を有するオフセット連結部８３とされている。本例では、当該オフセット部は、第一凹部２１と第二凹部２２とに挟まれた領域に形成されている。すなわち、延在方向区画部２５と一体的にオフセット部が形成されている。 On the other hand, as shown in FIG. 5, about the 2nd bus-bar 52, the shape in the planar view of the 1st connection part 81 and the 2nd connection part 82 is made into an asymmetrical shape mutually. Specifically, the second connecting portion 82 of the second bus bar 52 is an offset connecting portion 83 having an offset portion that offsets the extending direction Y of the bus bar 50 in the extending orthogonal direction X. In the present example, the offset portion is formed in a region sandwiched between the first recess 21 and the second recess 22. That is, the offset portion is formed integrally with the extending direction partition portion 25.
　これにより、第二バスバー５２については、第一連結部８１及び第二連結部８２の平面視での形状は、互いに点対称な形状を延在直交方向Ｘにずらした形状となっている。このように、第二連結部８２については、接合部７０側と支持部７１側とで延在方向Ｙが延在直交方向Ｘにおける異なる位置に配置されるため、接合部７０を挟んだ両側に設けられる一対の支持部７１は、延在直交方向Ｘにおいて互いに異なる位置に配置されている。 Thereby, about the 2nd bus-bar 52, the shape in the planar view of the 1st connection part 81 and the 2nd connection part 82 is a shape which shifted the shape symmetrical with respect to each other in the orthogonal direction X extended. As described above, since the extending direction Y is arranged at different positions in the extending orthogonal direction X on the joining portion 70 side and the support portion 71 side, the second connecting portion 82 is disposed on both sides of the joining portion 70. The pair of support portions 71 provided are arranged at different positions in the extending orthogonal direction X.
２．第二の実施形態
　本発明の第二の実施形態について図７を参照して説明する。なお、本実施形態並びに以下に順に説明する各実施形態に係る構成は、基本的には上記第一の実施形態と同様である。そのため、以下の各実施形態についての説明では、上記第一の実施形態との相違点を中心に説明し、特に明記しない点については上記第一の実施形態と同様とする。 2. Second Embodiment A second embodiment of the present invention will be described with reference to FIG. In addition, the structure which concerns on this embodiment and each embodiment demonstrated in order below is the same as that of said 1st embodiment fundamentally. Therefore, in the following description of each embodiment, the difference from the first embodiment will be mainly described, and the points not particularly specified are the same as those in the first embodiment.
　図７に示すように、本実施形態に係る第一バスバー５１の第二連結部８２では、上記第一の実施形態と異なり、第一凹部２１が第二凹部２２よりも接合部７０側に形成されている。すなわち、本実施形態に係る第一バスバー５１については、第一連結部８１及び第二連結部８２のそれぞれにおいて、第一凹部２１が第二凹部２２よりも接合部７０側に形成されている。これにより、本実施形態では、第一バスバー５１における第一連結部８１及び第二連結部８２の平面視での形状が、接合部７０の重心Ｇを通る延在直交方向Ｘに平行な直線に対して、互いに線対称な形状とされている。 As shown in FIG. 7, in the second connecting portion 82 of the first bus bar 51 according to the present embodiment, unlike the first embodiment, the first concave portion 21 is formed closer to the joint portion 70 than the second concave portion 22. Has been. That is, with respect to the first bus bar 51 according to the present embodiment, the first concave portion 21 is formed closer to the joint portion 70 than the second concave portion 22 in each of the first connecting portion 81 and the second connecting portion 82. Thereby, in this embodiment, the shape in the planar view of the 1st connection part 81 and the 2nd connection part 82 in the 1st bus-bar 51 becomes a straight line parallel to the extension orthogonal direction X which passes through the gravity center G of the junction part 70. On the other hand, it is a shape symmetrical with each other.
　なお、図示は省略するが、凹部２０の幅や深さを第一連結部８１と第二連結部８２とで異ならせること等により、第一連結部８１及び第二連結部８２の平面視での形状を、互いに点対称でも線対称でもない形状（すなわち非対称な形状）とすることも可能である。また、同じく図示は省略するが、第二バスバー５２についても同様に、第一連結部８１及び第二連結部８２のそれぞれにおいて、第一凹部２１が第二凹部２２よりも接合部７０側に形成された構成とすることができる。 In addition, although illustration is abbreviate | omitted, by making the width | variety and depth of the recessed part 20 differ in the 1st connection part 81 and the 2nd connection part 82, etc. by planar view of the 1st connection part 81 and the 2nd connection part 82 It is also possible to make these shapes into shapes that are neither point-symmetric nor line-symmetric with respect to each other (that is, an asymmetric shape). Similarly, for the second bus bar 52, the first concave portion 21 is formed closer to the joint portion 70 than the second concave portion 22 in each of the first connecting portion 81 and the second connecting portion 82. It can be set as the structure made.
３．第三の実施形態
　本発明の第三の実施形態について図８を参照して説明する。なお、本実施形態並びに以下に順に説明する各実施形態においては、第一バスバー５１の第一連結部８１を例として説明するが、第一バスバー５１の第二連結部８２や第二バスバー５２の連結部８１，８２についても同様に構成することが可能である。また、以下で参照する各図面においては、凹部２０を形成する側縁部１０の平面視での形状を、折れ線状に屈曲した形状としているが、上記第一の実施形態と同様、側縁部１０の折れ曲がり部（屈曲部）に円弧状部が形成された構成とすることも可能である。 3. Third Embodiment A third embodiment of the present invention will be described with reference to FIG. In addition, in this embodiment and each embodiment described in order below, the first connecting portion 81 of the first bus bar 51 will be described as an example, but the second connecting portion 82 of the first bus bar 51 and the second bus bar 52 The connecting portions 81 and 82 can be similarly configured. Moreover, in each drawing referred to below, the shape of the side edge portion 10 forming the recess 20 in a plan view is a shape bent in a polygonal line shape, but the side edge portion is the same as in the first embodiment. It is also possible to adopt a configuration in which an arc-shaped portion is formed in ten bent portions (bent portions).
　図８に示すように、本実施形態に係る第一連結部８１では、上記の各実施形態とは異なり、第二凹部２２が第一凹部２１よりも接合部７０側に形成されている。また、本例では、第一凹部２１と第二凹部２２とは、延在方向Ｙの幅が互いに等しく形成されている。図示は省略するが、第一凹部２１及び第二凹部２２の内の接合部７０側に位置する方の延在方向Ｙの幅が、他方よりも狭く形成された構成とすることも可能である。さらに、本例では、延在方向区画部２５の延在方向Ｙの幅が、第一凹部２１や第二凹部２２の延在方向Ｙの幅と同程度ではなく、これらの凹部２０の延在方向Ｙの幅よりも広く形成されている。 As shown in FIG. 8, in the 1st connection part 81 which concerns on this embodiment, unlike said each embodiment, the 2nd recessed part 22 is formed in the junction part 70 side rather than the 1st recessed part 21. As shown in FIG. In this example, the first recess 21 and the second recess 22 are formed to have the same width in the extending direction Y. Although illustration is omitted, it is also possible to adopt a configuration in which the width in the extending direction Y of the first concave portion 21 and the second concave portion 22 located on the joint portion 70 side is narrower than the other. . Furthermore, in this example, the width in the extending direction Y of the extending direction partitioning portion 25 is not the same as the width in the extending direction Y of the first recessed portion 21 and the second recessed portion 22, and the extending portions of these recessed portions 20. It is formed wider than the width in the direction Y.
４．第四の実施形態
　本発明の第四の実施形態について図９及び図１０の各具体例を参照して説明する。図９及び図１０に示すように、本実施形態に係る第一連結部８１では、上記の各実施形態とは異なり、第一凹部２１と第二凹部２２とは、深さ（延在直交方向Ｘの長さ）が互いに異なるように形成される。 4). Fourth Embodiment A fourth embodiment of the present invention will be described with reference to specific examples of FIGS. As shown in FIGS. 9 and 10, in the first connecting portion 81 according to this embodiment, unlike the above-described embodiments, the first recess 21 and the second recess 22 have a depth (extending orthogonal direction). X lengths) are different from each other.
　具体的には、図９に示す例では、接合部７０側に位置する凹部２０（本例では第二凹部２２）が、支持部７１側に位置する凹部２０（本例では第一凹部２１）よりも、延在直交方向Ｘの長さが短く（すなわち浅く）形成されている。また、図１０に示す例では、接合部７０側に位置する凹部２０（本例では第二凹部２２）が、支持部７１側に位置する凹部２０（本例では第一凹部２１）よりも、延在直交方向Ｘの長さが長く（すなわち深く）形成されている。このような構成を備えるため、図９や図１０に示す構成では、上記の各実施形態とは異なり、第一凹部２１と同じ延在方向Ｙの位置に形成される幅狭部２８と、第二凹部２２と同じ延在方向Ｙの位置に形成される幅狭部２８とは、互いに延在直交方向Ｘの幅が異なる。 Specifically, in the example illustrated in FIG. 9, the concave portion 20 (second concave portion 22 in this example) located on the joint portion 70 side is the concave portion 20 (first concave portion 21 in this example) located on the support portion 71 side. The length in the extending orthogonal direction X is shorter (that is, shallower). In addition, in the example shown in FIG. 10, the recess 20 (second recess 22 in this example) located on the joint portion 70 side is more than the recess 20 (first recess 21 in this example) located on the support portion 71 side. The length in the extending orthogonal direction X is long (that is, deep). In order to provide such a configuration, in the configuration shown in FIGS. 9 and 10, unlike the above embodiments, the narrow portion 28 formed at the same position in the extending direction Y as the first recess 21, and the first The narrow portion 28 formed at the same position in the extending direction Y as the two concave portions 22 has a different width in the extending orthogonal direction X.
５．第五の実施形態
　本発明の第五の実施形態について図１１～図１３の各具体例を参照して説明する。図１１～図１３に示すように、本実施形態に係る第一連結部８１では、上記の各実施形態とは異なり、延在方向区画部２５が屈曲部を有し、延在直交方向Ｘに沿って延びる部分に加えて、延在方向Ｙに沿って延びる部分を有して構成される。これにより、連結部８０の延在直交方向Ｘの幅を大きくすることなく、連結部８０の全長を長くして連結部８０における変形のし易さを向上させ、連結部８０の変形量の上限を高めることが可能となっている。なお、「連結部８０の全長」とは、連結部８０における電流の経路に沿った長さ、すなわち、連結部８０の接合部７０側の端部と支持部７１側の端部とをバスバー５０の内部を通って結ぶ最短の経路長を意味する。 5. Fifth Embodiment A fifth embodiment of the present invention will be described with reference to specific examples in FIGS. As shown in FIGS. 11 to 13, in the first connecting portion 81 according to the present embodiment, unlike the above-described embodiments, the extending direction partitioning portion 25 has a bent portion and extends in the extending orthogonal direction X. In addition to the portion extending along, it has a portion extending along the extending direction Y. Accordingly, without increasing the width of the connecting portion 80 in the extending orthogonal direction X, the entire length of the connecting portion 80 is lengthened to improve the ease of deformation in the connecting portion 80, and the upper limit of the deformation amount of the connecting portion 80. It is possible to increase. The “total length of the connecting portion 80” means the length along the current path in the connecting portion 80, that is, the end portion on the joining portion 70 side and the end portion on the support portion 71 side of the connecting portion 80. This means the shortest path length connecting through the inside of.
　具体的には、図１１に示す例では、第一凹部２１と第二凹部２２とに加えて、第三凹部２３が形成されている。本例では、第三凹部２３は、第二凹部２２と同様、第二方向Ｘ２側に開口する凹部２０とされ、接合部７０から支持部７１側に向かって、第二凹部２２、第一凹部２１、第三凹部２３の順に配置されている。これにより、図１１に示すように、延在方向区画部２５は、延在方向Ｙに沿った接合部７０側及び支持部７１側の両側において同一の側縁部１０（本例では第二側縁部１２）により区画される部分を有する。また、図１１に示す例では、上記の各実施形態とは異なり、一部の幅狭部２８が延在方向区画部２５に含まれる形態で延在方向区画部２５と一体的に形成されている。また、本例では上記の各実施形態とは異なり、連結部８０における延在方向区画部２５を接合部７０に接続する部分（接合部側延在部２６に相当する部分）と、連結部８０における延在方向区画部２５を支持部７１に接続する部分（支持部側延在部２７に相当する部分）とは、延在方向区画部２５に対して延在直交方向Ｘにおける互いに同じ側（本例では第一方向Ｘ１側）に接続されている。 Specifically, in the example shown in FIG. 11, in addition to the first recess 21 and the second recess 22, a third recess 23 is formed. In this example, the third concave portion 23 is the concave portion 20 that opens to the second direction X2 side, like the second concave portion 22, and the second concave portion 22, the first concave portion from the joint portion 70 toward the support portion 71 side. 21 and the third recess 23 are arranged in this order. Accordingly, as shown in FIG. 11, the extending direction partitioning portion 25 has the same side edge portion 10 (second side in this example) on both sides of the joining portion 70 side and the supporting portion 71 side along the extending direction Y. Having a portion delimited by the edge 12). Further, in the example shown in FIG. 11, unlike each of the above embodiments, a part of the narrow portion 28 is integrally formed with the extending direction partitioning portion 25 in a form included in the extending direction partitioning portion 25. Yes. Further, in this example, unlike each of the above-described embodiments, a portion (a portion corresponding to the joint portion extending portion 26) that connects the extending direction partitioning portion 25 in the joint portion 80 to the joint portion 70, and a joint portion 80. The portion connecting the extending direction partition portion 25 to the support portion 71 (the portion corresponding to the support portion side extending portion 27) is the same side in the extending orthogonal direction X with respect to the extending direction partition portion 25 ( In this example, it is connected in the first direction X1 side).
　なお、図１１に示す例において、第一凹部２１の深さを浅く（具体的には半分程度に）形成するとともに、第二凹部２２と第三凹部２３とが開口部側部分で延在方向Ｙに互いに連通するように一体的に第二凹部２２として形成された構成（図１２参照）とすることもできる。すなわち、図１２に示す例では、第二凹部２２が、延在方向Ｙの両側が深く中央部が浅い階段状の凹部とされている。 In the example shown in FIG. 11, the first recess 21 is formed with a shallow depth (specifically, about half), and the second recess 22 and the third recess 23 extend in the opening side portion. It can also be set as the structure (refer FIG. 12) integrally formed as the 2nd recessed part 22 so that it may mutually communicate with Y. That is, in the example shown in FIG. 12, the second recess 22 is a step-like recess that is deep on both sides in the extending direction Y and shallow in the center.
　また、図１３に示す例では、図１１に示す例に加えて、更に、第四凹部２４が形成されている。本例では、第四凹部２４は、第一凹部２１と同様、第一方向Ｘ１側に開口する凹部２０とされ、接合部７０から支持部７１側に向かって、第二凹部２２、第一凹部２１、第三凹部２３、第四凹部２４の順に配置されている。本例では、上記の各実施形態と同様、連結部８０における延在方向区画部２５を接合部７０に接続する部分（接合部側延在部２６に相当する部分）と、連結部８０における延在方向区画部２５を支持部７１に接続する部分（支持部側延在部２７に相当する部分）とは、延在方向区画部２５に対して延在直交方向Ｘにおける互いに反対側に接続されている。 Further, in the example shown in FIG. 13, in addition to the example shown in FIG. 11, a fourth recess 24 is further formed. In this example, the 4th recessed part 24 is made into the recessed part 20 opened to the 1st direction X1 side like the 1st recessed part 21, and the 2nd recessed part 22 and the 1st recessed part toward the support part 71 side from the junction part 70. 21, the third recess 23, and the fourth recess 24 are arranged in this order. In this example, as in each of the above-described embodiments, a portion connecting the extending direction partitioning portion 25 in the connecting portion 80 to the joining portion 70 (a portion corresponding to the joining portion extending portion 26), and an extension in the connecting portion 80. The part connecting the current direction partition part 25 to the support part 71 (the part corresponding to the support part side extension part 27) is connected to the opposite side in the extending orthogonal direction X with respect to the extension direction partition part 25. ing.
　なお、図１１及び図１３に示す例では、上記第一の実施形態と同様、複数の凹部２０のそれぞれは、延在直交方向Ｘに見て、互いに重複することなく延在方向Ｙに分離された領域（延在方向Ｙに沿う領域）に形成されている。 In the example shown in FIGS. 11 and 13, as in the first embodiment, each of the plurality of recesses 20 is separated in the extending direction Y without overlapping each other when viewed in the extending orthogonal direction X. Formed in a region (region along the extending direction Y).
６．第六の実施形態
　本発明の第六の実施形態について図１４～図１７の各具体例を参照して説明する。図１４～図１７に示すように、本実施形態に係る第一連結部８１では、上記第一の実施形態とは異なり、延在方向区画部２５が、延在直交方向Ｘに沿って延びるとは見なせない程度に延在直交方向Ｘに対して傾いた方向（交差した方向）に延びるように形成される。 6). Sixth Embodiment A sixth embodiment of the present invention will be described with reference to specific examples of FIGS. As shown in FIGS. 14 to 17, in the first connecting portion 81 according to the present embodiment, unlike the first embodiment, the extending direction partitioning portion 25 extends along the extending orthogonal direction X. Is formed so as to extend in a direction (crossing direction) inclined with respect to the orthogonal direction X extending so as not to be considered.
　具体的には、図１４に示す例では、第一凹部２１及び第二凹部２２のそれぞれは、底部の延在方向Ｙの幅が開口部よりも広く形成されている。そして、第一凹部２１及び第二凹部２２のそれぞれを区画する側縁部１０は、延在方向Ｙにおける他の凹部２０とは離れる側を区画する部分が、延在直交方向Ｘと平行に延び、延在方向Ｙにおける他の凹部２０に近い側を区画する部分（延在方向区画部２５を区画する部分）が、開口部から底部に向かうに従って延在方向Ｙにおける当該他の凹部２０側に向かう形状に形成されている。 Specifically, in the example shown in FIG. 14, each of the first recess 21 and the second recess 22 is formed such that the width in the extending direction Y of the bottom is wider than the opening. And the side edge part 10 which divides each of the 1st recessed part 21 and the 2nd recessed part 22 extends in parallel with the extension orthogonal direction X, and the part which divides the side away from the other recessed part 20 in the extending direction Y is extended. The portion that divides the side close to the other concave portion 20 in the extending direction Y (the portion that divides the extending direction dividing portion 25) is closer to the other concave portion 20 in the extending direction Y as it goes from the opening to the bottom. It is formed in a facing shape.
　これにより、本例では、第一凹部２１が形成されている延在方向Ｙに沿った領域と、第二凹部２２が形成されている延在方向Ｙに沿った領域とは、延在直交方向Ｘに見て延在方向Ｙに異なる位置とされるものの、これら２つの領域は、延在直交方向Ｘに見て延在方向Ｙに一部が重複している。具体的には、第一凹部２１の開口部（第一方向Ｘ１側の端部）が形成されている延在方向Ｙに沿った領域と、第二凹部２２の開口部（第二方向Ｘ２側の端部）が形成されている延在方向Ｙに沿った領域とは、延在直交方向Ｘに見て互いに重複することなく延在方向Ｙに分離されている。一方、第一凹部２１の底部（第二方向Ｘ２側の端部）が形成されている延在方向Ｙに沿った領域と、第二凹部２２の底部（第一方向Ｘ１側の端部）が形成されている延在方向Ｙに沿った領域とは、延在直交方向Ｘに見て延在方向Ｙに互いに一部が重複している。 Thereby, in this example, the region along the extending direction Y in which the first recess 21 is formed and the region along the extending direction Y in which the second recess 22 is formed are in the extending orthogonal direction. Although these positions are different from each other in the extending direction Y as viewed in X, these two regions partially overlap in the extending direction Y as viewed in the extending orthogonal direction X. Specifically, the region along the extending direction Y where the opening of the first recess 21 (the end on the first direction X1 side) is formed, and the opening of the second recess 22 (on the second direction X2 side). Are separated in the extending direction Y without overlapping each other when viewed in the extending orthogonal direction X. On the other hand, the region along the extending direction Y where the bottom of the first recess 21 (the end on the second direction X2 side) is formed and the bottom of the second recess 22 (the end on the first direction X1 side) The regions along the extending direction Y that are formed partially overlap each other in the extending direction Y when viewed in the extending orthogonal direction X.
　上記のような構成を備えるため、図１４に示す例では、連結部８０の延在直交方向Ｘや延在方向Ｙの幅を大きくすることなく、連結部８０の全長を長くして連結部８０における変形のし易さを向上させ、連結部８０の変形量の上限を高めることが可能となっている。 In order to provide the above-described configuration, in the example shown in FIG. 14, the connecting portion 80 is made longer by increasing the entire length of the connecting portion 80 without increasing the width in the extending orthogonal direction X or the extending direction Y of the connecting portion 80. It is possible to improve the easiness of deformation in the above and increase the upper limit of the deformation amount of the connecting portion 80.
　図１５に示す例では、図１４に示す例とは逆に、第一凹部２１及び第二凹部２２のそれぞれが、開口部の延在方向Ｙの幅が底部よりも広く形成されている。そして、第一凹部２１が形成されている延在方向Ｙに沿った領域と、第二凹部２２が形成されている延在方向Ｙに沿った領域とは、延在方向Ｙに同じ位置とされ、これら２つの領域は延在直交方向Ｘに見て完全に重複（全域で重複）している。また、本例では、延在方向区画部２５は、図１４に示す例とは異なり、接合部側延在部２６や支持部側延在部２７を介することなく、接合部７０及び支持部７１の双方に直接連結されている。 In the example shown in FIG. 15, contrary to the example shown in FIG. 14, each of the first recess 21 and the second recess 22 is formed so that the width in the extending direction Y of the opening is wider than the bottom. The region along the extending direction Y where the first recess 21 is formed and the region along the extending direction Y where the second recess 22 is formed are at the same position in the extending direction Y. These two regions are completely overlapped (overlap in the entire area) when viewed in the extending orthogonal direction X. Further, in this example, the extending direction partitioning portion 25 is different from the example shown in FIG. 14 in that the joining portion 70 and the supporting portion 71 do not pass through the joining portion side extending portion 26 and the supporting portion side extending portion 27. Are directly connected to both.
　なお、図１５に示す構成において凹部２０の形状を変形して、図１６に示す例や図１７に示す例にように、延在方向区画部２５が平面視で折れ線状に屈曲して延びるように形成された構成とすることも可能である。これら図１６及び図１７に示す例でも、全体として見た場合の延在方向区画部２５の延在方向は、延在直交方向Ｘに沿って延びるとは見なせない程度に延在直交方向Ｘに対して傾斜（交差）した方向となる。 In the configuration shown in FIG. 15, the shape of the recess 20 is changed so that the extending direction partitioning portion 25 is bent and extended in a polygonal line in plan view as in the example shown in FIG. 16 or the example shown in FIG. 17. It is also possible to adopt a configuration formed in the above. Also in the examples shown in FIGS. 16 and 17, the extending direction of the extending direction partition portion 25 when viewed as a whole extends in the extending orthogonal direction X to the extent that it cannot be considered to extend along the extending orthogonal direction X. The direction is inclined (intersected) with respect to.
７．第七の実施形態
　本発明の第七の実施形態について図１８～図２５の各具体例を参照して説明する。本実施形態に係る第一連結部８１では、上記の各実施形態とは異なり、連結部８０と接合部７０との境界部、及び連結部８０と支持部７１との境界部の少なくとも一方が、接合部７０又は支持部７１の延在直交方向Ｘの端部ではなく中間部に設けられる。 7). Seventh Embodiment A seventh embodiment of the present invention will be described with reference to specific examples of FIGS. In the first connection part 81 according to the present embodiment, unlike the above-described embodiments, at least one of the boundary part between the connection part 80 and the joint part 70 and the boundary part between the connection part 80 and the support part 71 is: The joint 70 or the support 71 is provided not at the end in the extending orthogonal direction X but at the intermediate portion.
　具体的には、図１８に示す例は、図４に示す第一連結部８１における第一凹部２１と第二凹部２２との延在方向Ｙの位置を入れ替えた構成において、第一凹部２１の深さを浅く（具体的には半分程度に）した形状に相当する。これにより、第二凹部２２は、支持部７１側が浅く接合部７０側が深い階段状の凹部となり、連結部８０と支持部７１との境界部が、支持部７１における延在直交方向Ｘの中間部（本例では中央部）に位置する。 Specifically, in the example shown in FIG. 18, in the configuration in which the positions of the first recessed portion 21 and the second recessed portion 22 in the extending direction Y in the first connecting portion 81 shown in FIG. This corresponds to a shape with a shallow depth (specifically, about half). As a result, the second concave portion 22 becomes a stepped concave portion that is shallow on the support portion 71 side and deep on the joint portion 70 side, and the boundary portion between the connecting portion 80 and the support portion 71 is an intermediate portion in the extending orthogonal direction X of the support portion 71. (In this example, it is located in the center).
　図１９に示す例は、図１８に示す例とは逆に、第二凹部２２の深さを浅く（具体的には半分程度に）した形状に相当し、第一凹部２１が、接合部７０側が浅く支持部７１側が深い階段状の凹部となっている。これにより、連結部８０と接合部７０との境界部が、接合部７０における延在直交方向Ｘの中間部（本例では中央部）に位置する。 The example shown in FIG. 19 corresponds to a shape in which the depth of the second recess 22 is shallow (specifically about half), contrary to the example shown in FIG. The side is shallow and the support part 71 side is a deep stepped recess. Thereby, the boundary part of the connection part 80 and the junction part 70 is located in the intermediate part (central part in this example) of the extension orthogonal direction X in the junction part 70. FIG.
　図２０に示す例は、図１２に示す例において、連結部８０（幅狭部２８）の全体を第二方向Ｘ２側にずらした形状とされ、第一凹部２１が、延在方向Ｙの両側が浅く中央部が深い階段状の凹部となり、連結部８０には第二方向Ｘ２側に開口する凹部２０として、第二凹部２２と第三凹部２３とが備えられる。これにより、連結部８０と接合部７０との境界部、及び連結部８０と支持部７１との境界部の双方が、接合部７０又は支持部７１における延在直交方向Ｘの中間部（本例では中央部）に位置する。 The example shown in FIG. 20 has a shape in which the entire connecting portion 80 (narrow portion 28) is shifted to the second direction X2 side in the example shown in FIG. The center portion is a stepped recess having a deep central portion, and the connecting portion 80 is provided with a second recess 22 and a third recess 23 as the recess 20 opening toward the second direction X2. Thereby, both the boundary part of the connection part 80 and the junction part 70 and the boundary part of the connection part 80 and the support part 71 are the intermediate part (this example) of the extension part orthogonal direction X in the junction part 70 or the support part 71. In the center).
　図２１に示す例は、図１１に示す例において、第三凹部２３の深さを浅く（具体的には半分程度に）した形状に相当し、第一凹部２１が階段状の凹部となっている。これにより、連結部８０と支持部７１との境界部が、支持部７１における延在直交方向Ｘの中間部（本例では中央部）に位置する。図２２に示す例は、図１１に示す例において、第二凹部２２の深さを浅く（具体的には半分程度に）した形状に相当し、第一凹部２１が階段状の凹部となっている。これにより、連結部８０と接合部７０との境界部が、接合部７０における延在直交方向Ｘの中間部（本例では中央部）に位置する。 The example shown in FIG. 21 corresponds to a shape in which the depth of the third recess 23 is shallow (specifically, about half) in the example shown in FIG. 11, and the first recess 21 is a stepped recess. Yes. Thereby, the boundary part of the connection part 80 and the support part 71 is located in the intermediate part (the center part in this example) of the extending orthogonal direction X in the support part 71. The example shown in FIG. 22 corresponds to a shape in which the depth of the second concave portion 22 is shallow (specifically, about half) in the example shown in FIG. 11, and the first concave portion 21 is a stepped concave portion. Yes. Thereby, the boundary part of the connection part 80 and the junction part 70 is located in the intermediate part (central part in this example) of the extension orthogonal direction X in the junction part 70. FIG.
　図２３～図２５に示す各例は、図１３に示す例において第二凹部２２及び第四凹部２４の一方又は双方の深さを浅く（具体的には半分程度に）した形状に相当する。具体的には、図２３に示す例では、第四凹部２４の深さを浅くするとともに第三凹部２３を階段状の凹部とし、連結部８０と支持部７１との境界部が、支持部７１における延在直交方向Ｘの中間部（本例では中央部）に位置する。図２４に示す例では、第二凹部２２の深さを浅くするとともに第一凹部２１を階段状の凹部とし、連結部８０と接合部７０との境界部が、接合部７０における延在直交方向Ｘの中間部（本例では中央部）に位置する。図２５に示す例は、図２３と図２４とを組み合わせたものに相当し、連結部８０と接合部７０との境界部、及び連結部８０と支持部７１との境界部の双方が、接合部７０又は支持部７１における延在直交方向Ｘの中間部（本例では中央部）に位置する。 Each of the examples shown in FIGS. 23 to 25 corresponds to a shape in which the depth of one or both of the second concave portion 22 and the fourth concave portion 24 is shallow (specifically, about half) in the example shown in FIG. Specifically, in the example shown in FIG. 23, the depth of the fourth recess 24 is reduced and the third recess 23 is a stepped recess, and the boundary between the connecting portion 80 and the support portion 71 is the support portion 71. Is located in the middle part (in this example, the central part) in the extending orthogonal direction X. In the example shown in FIG. 24, the depth of the second recess 22 is reduced, the first recess 21 is a stepped recess, and the boundary between the connecting portion 80 and the joint 70 extends in the extending orthogonal direction at the joint 70. Located in the middle part of X (in this example, the central part). The example shown in FIG. 25 corresponds to a combination of FIG. 23 and FIG. 24, and both the boundary portion between the connecting portion 80 and the joint portion 70 and the boundary portion between the connecting portion 80 and the support portion 71 are joined. It is located in the middle part (the center part in this example) of the extending orthogonal direction X in the part 70 or the support part 71.
８．第八の実施形態
　本発明の第八の実施形態について図２７を参照して説明する。図２６は、この第八の実施形態と比較するための上記第一の実施形態の図である。上記の各実施形態では、図１、図６、及び図２６に示すように、電極部材９０は、板状部材を屈曲させて形成されている。例えば、図２６に示すように、電極部材９０は、板状部材の２箇所に屈曲部９０ｃを有して形成される断面Ｕ字状部分を有している。そして、電極部材９０の当該断面Ｕ字状部分の開放端部が、直接的又は素子基板４２を介して間接的に半導体素子（本例ではスイッチング素子３１及びダイオード素子３２）と電気的に接続されている。具体的には、電極部材９０は、バスバー５０と平行に配置された平面状のバスバー接続部９０ｂと、当該バスバー接続部９０ｂにおけるバスバー５０に対向する面に形成された接合面９０ａと、バスバー接続部９０ｂを挟んだ両側に設けられた一対の屈曲部９０ｃと、当該屈曲部９０ｃのそれぞれから先端側へ延びる部分である一対の側壁部９０ｄと、を有している。ここでは、一対の側壁部９０ｄがバスバー接続部９０ｂに対して同じ側へ延びるように、一対の屈曲部９０ｃは同じ側へ屈曲されている。本例では、各屈曲部９０ｃは、湾曲部分を有して約９０°屈曲されている。よって、各側壁部９０ｄはバスバー接続部９０ｂに対して直交する方向（＋Ｚ方向）に延びるように設けられている。 8). Eighth Embodiment An eighth embodiment of the present invention will be described with reference to FIG. FIG. 26 is a diagram of the first embodiment for comparison with the eighth embodiment. In each of the above-described embodiments, as shown in FIGS. 1, 6, and 26, the electrode member 90 is formed by bending a plate-like member. For example, as shown in FIG. 26, the electrode member 90 has a U-shaped section having a bent portion 90c formed at two locations of the plate-like member. The open end of the U-shaped section of the electrode member 90 is electrically connected to the semiconductor element (in this example, the switching element 31 and the diode element 32) directly or indirectly via the element substrate 42. ing. Specifically, the electrode member 90 includes a planar bus bar connection portion 90b arranged in parallel to the bus bar 50, a joint surface 90a formed on a surface of the bus bar connection portion 90b facing the bus bar 50, and a bus bar connection. It has a pair of bent portions 90c provided on both sides of the portion 90b, and a pair of side wall portions 90d that are portions extending from the respective bent portions 90c to the tip side. Here, the pair of bent portions 90c are bent to the same side so that the pair of side wall portions 90d extend to the same side with respect to the bus bar connecting portion 90b. In this example, each bent portion 90c has a curved portion and is bent about 90 °. Therefore, each side wall part 90d is provided so as to extend in a direction (+ Z direction) orthogonal to the bus bar connection part 90b.
　図１、図６、及び図２６に示す例では、一対の屈曲部９０ｃを結ぶ方向がバスバー５０の延在方向Ｙに平行となるように、電極部材９０の向きが設定されている。しかしながら、本発明の実施形態は、これに限定されるものではない。一対の屈曲部９０ｃを結ぶ方向が、バスバー５０の延在方向Ｙに交差する方向となるように、電極部材９０の向きが設定されていても好適である。特に、図２７の例に示すように、一対の屈曲部９０ｃを結ぶ方向が、バスバー５０の延在方向Ｙに直交する方向（すなわち延在直交方向Ｘに平行な方向）となるように、電極部材９０の向きが設定されていると好適である。このように構成することにより、図２６等に示す構成に比べて、バスバー５０の一対の連結部８０の間隔を短くすることが可能となる。 In the example shown in FIGS. 1, 6, and 26, the orientation of the electrode member 90 is set so that the direction connecting the pair of bent portions 90c is parallel to the extending direction Y of the bus bar 50. However, the embodiment of the present invention is not limited to this. It is preferable that the direction of the electrode member 90 is set so that the direction connecting the pair of bent portions 90c is a direction intersecting the extending direction Y of the bus bar 50. In particular, as shown in the example of FIG. 27, the electrodes are connected so that the direction connecting the pair of bent portions 90 c is a direction orthogonal to the extending direction Y of the bus bar 50 (that is, a direction parallel to the extending orthogonal direction X). It is preferable that the orientation of the member 90 is set. By configuring in this way, it is possible to shorten the distance between the pair of connecting portions 80 of the bus bar 50 compared to the configuration shown in FIG.
　図２６に示すように、一対の屈曲部９０ｃを結ぶ方向がバスバー５０の延在方向Ｙに平行となっている場合には、バスバー５０の延在方向Ｙに沿って、電極部材９０のバスバー接続部９０ｂに対して延在方向Ｙの両側のそれぞれに、屈曲部９０ｃが存在することになる。そのため、図６（ｂ）に示すように、支持体６０とベース部材４１とが一体化される際に、バスバー５０の連結部８０の変形が屈曲部９０ｃとの干渉により妨げられることを抑制するため、バスバー５０の連結部８０は屈曲部９０ｃを避けた位置に設けられる。具体的には、最も接合部７０側に位置する凹部２０が、平面視（上下方向Ｚ視）で、バスバー接続部９０ｂ及び屈曲部９０ｃと重複しない位置に設けられる。このため、図２６に示す例では、最も接合部７０側に位置する凹部２０が、接合面９０ａにおける延在方向Ｙの端部から所定の離間距離Ｌ３だけ支持部７１側へ離れた位置に設けられている。この離間距離Ｌ３は、屈曲部９０ｃの湾曲部分の延在方向Ｙの長さに相当する長さに設定されている。このため、図２６に示す例では、バスバー５０の接合部７０の延在方向Ｙの長さは、接合面９０ａの延在方向Ｙの長さＬ１より、一対の離間距離Ｌ３の分だけ長くなっている。すなわち、接合部７０の延在方向Ｙの長さは、「Ｌ１＋２×Ｌ３」となっている。 As shown in FIG. 26, when the direction connecting the pair of bent portions 90 c is parallel to the extending direction Y of the bus bar 50, the bus bar connection of the electrode member 90 along the extending direction Y of the bus bar 50 is performed. Bending portions 90c exist on both sides in the extending direction Y with respect to the portion 90b. Therefore, as shown in FIG. 6B, when the support body 60 and the base member 41 are integrated, the deformation of the connecting portion 80 of the bus bar 50 is prevented from being hindered by interference with the bent portion 90c. Therefore, the connecting portion 80 of the bus bar 50 is provided at a position avoiding the bent portion 90c. Specifically, the concave portion 20 located closest to the joint portion 70 is provided at a position that does not overlap with the bus bar connecting portion 90b and the bent portion 90c in plan view (viewed in the vertical direction Z). For this reason, in the example shown in FIG. 26, the concave portion 20 located closest to the joining portion 70 is provided at a position away from the end portion in the extending direction Y on the joining surface 90a toward the support portion 71 by a predetermined separation distance L3. It has been. This separation distance L3 is set to a length corresponding to the length in the extending direction Y of the curved portion of the bent portion 90c. Therefore, in the example shown in FIG. 26, the length in the extending direction Y of the joining portion 70 of the bus bar 50 is longer than the length L1 in the extending direction Y of the joining surface 90a by a pair of separation distances L3. ing. That is, the length of the joining portion 70 in the extending direction Y is “L1 + 2 × L3”.
　一方、本実施形態の構成によれば、図２７に示すように、一対の屈曲部９０ｃを結ぶ方向が延在直交方向Ｘに平行な方向となるように配置されている。この場合、電極部材９０のバスバー接続部９０ｂの延在方向Ｙの両側端部は、当該バスバー接続部９０ｂを構成する板状部材の側縁となっている。従って、バスバー５０の連結部８０の下側（＋Ｚ方向）には屈曲部９０ｃは存在せず、連結部８０が屈曲部９０ｃを避けた位置に設けられる必要もない。そこで、本実施形態では、最も接合部７０側に位置する凹部２０が、接合面９０ａにおける延在方向Ｙの端部に接する位置に設けられている。このため、バスバー５０の接合部７０の延在方向Ｙの長さは、接合面９０ａの延在方向Ｙの長さＬ２に等しい長さとなっている。なお、図２７に示す例では、接合面９０ａの延在直交方向Ｘの長さＬ１がバスバー５０の延在直交方向Ｘの幅Ｌ４より大きい構成となっているが、これらの長さが等しい構成（Ｌ１＝Ｌ４）とすることも、本発明の好適な実施形態の一つである。このようにすれば、接合面９０ａとバスバー５０の接合部７０との接合面積を最大限確保して良好な導電性を維持しつつ、装置の延在直交方向Ｘの大きさを最小限に抑えることが可能となる。 On the other hand, according to the configuration of the present embodiment, as shown in FIG. 27, the direction connecting the pair of bent portions 90c is arranged to be parallel to the extending orthogonal direction X. In this case, both end portions in the extending direction Y of the bus bar connecting portion 90b of the electrode member 90 are side edges of the plate-like member constituting the bus bar connecting portion 90b. Therefore, the bent portion 90c does not exist on the lower side (+ Z direction) of the connecting portion 80 of the bus bar 50, and the connecting portion 80 does not need to be provided at a position avoiding the bent portion 90c. Therefore, in the present embodiment, the concave portion 20 located closest to the joint portion 70 is provided at a position in contact with the end portion in the extending direction Y on the joint surface 90a. For this reason, the length of the joining portion 70 of the bus bar 50 in the extending direction Y is equal to the length L2 of the joining surface 90a in the extending direction Y. In the example shown in FIG. 27, the length L1 in the extending orthogonal direction X of the joint surface 90a is larger than the width L4 in the extending orthogonal direction X of the bus bar 50, but these lengths are equal. (L1 = L4) is also a preferred embodiment of the present invention. In this way, the size of the device extending in the orthogonal direction X is minimized while ensuring the maximum bonding area between the bonding surface 90a and the bonding portion 70 of the bus bar 50 and maintaining good conductivity. It becomes possible.
　なお、本実施形態では、図２７に示すように、一対の屈曲部９０ｃを結ぶ方向がバスバー５０の延在方向Ｙに直交する方向（延在直交方向Ｘに平行な方向）となるように、電極部材９０の向きが設定されている構成を例として説明したが、本発明の実施形態はこれに限定されるものではない。一対の屈曲部９０ｃを結ぶ方向が、バスバー５０の延在方向Ｙに対して、９０°以外の角度で交差する方向となるように、電極部材９０を配置することも、本発明の好適な実施形態の一つである。例えば、一対の屈曲部９０ｃを結ぶ方向と、バスバー５０の延在方向Ｙとの交差角度を、４５°や６０°等とすることもできる。 In the present embodiment, as shown in FIG. 27, the direction connecting the pair of bent portions 90c is a direction orthogonal to the extending direction Y of the bus bar 50 (a direction parallel to the extending orthogonal direction X). The configuration in which the orientation of the electrode member 90 is set has been described as an example, but the embodiment of the present invention is not limited to this. It is also preferable to arrange the electrode member 90 so that the direction connecting the pair of bent portions 90c intersects the extending direction Y of the bus bar 50 at an angle other than 90 °. One of the forms. For example, the crossing angle between the direction connecting the pair of bent portions 90c and the extending direction Y of the bus bar 50 may be 45 °, 60 °, or the like.
９．その他の実施形態
　最後に、本発明に係る接続部材及び電気的接続装置の、その他の実施形態について説明する。なお、以下のそれぞれの実施形態で開示される構成、並びに上述した各実施形態で開示された構成は、矛盾が生じない限り、他の実施形態で開示される構成と組み合わせて適用することが可能である。 9. Other Embodiments Finally, other embodiments of the connection member and the electrical connection device according to the present invention will be described. Note that the configurations disclosed in the following embodiments and the configurations disclosed in the respective embodiments described above can be applied in combination with the configurations disclosed in other embodiments as long as no contradiction arises. It is.
（１）上記の各実施形態では、延在方向区画部２５における全ての部分が、接合部７０の延在直交方向Ｘの幅よりも延在方向Ｙの幅が狭く形成された構成を例として説明した。しかし、本発明の実施形態はこれに限定されるものではなく、延在方向区画部２５における一部の部分のみが、接合部７０の延在直交方向Ｘの幅よりも延在方向Ｙの幅が狭く形成され、他の部分の延在方向Ｙの幅が、接合部７０の延在直交方向Ｘの幅以上とされた構成とすることも、本発明の好適な実施形態の一つである。なお、延在方向区画部２５における全ての部分の延在方向Ｙの幅が、接合部７０の延在直交方向Ｘの幅以上とされた構成とすることも可能である。 (1) In each of the above-described embodiments, an example in which all the portions in the extending direction partition portion 25 are formed so that the width in the extending direction Y is narrower than the width in the extending orthogonal direction X of the joint portion 70 is taken as an example. explained. However, the embodiment of the present invention is not limited to this, and only a part of the extending direction partition portion 25 has a width in the extending direction Y rather than a width in the extending orthogonal direction X of the joint portion 70. In another preferred embodiment of the present invention, the width of the other portion in the extending direction Y is equal to or larger than the width in the extending orthogonal direction X of the joint portion 70. . It is also possible to adopt a configuration in which the width in the extending direction Y of all the portions in the extending direction partitioning portion 25 is equal to or greater than the width in the extending orthogonal direction X of the joint portion 70.
（２）上記の各実施形態では、図１に示すように、第一バスバー５１が第一電極部材９１に接合され、第二バスバー５２が第二電極部材９２に接合される構成を例として説明した。しかし、本発明の実施形態はこれに限定されるものではなく、素子基板４２における半導体素子（スイッチング素子３１及びダイオード素子３２）の配置位置を＋Ｘ方向側にずらすとともに第一電極部材９１及び第二電極部材９２の延在直交方向Ｘにおける位置を入れ替え、第一バスバー５１が第二電極部材９２に接合され、第二バスバー５２が第一電極部材９１に接合される構成とすることも可能である。 (2) In each of the above embodiments, as shown in FIG. 1, the first bus bar 51 is joined to the first electrode member 91 and the second bus bar 52 is joined to the second electrode member 92 as an example. did. However, the embodiment of the present invention is not limited to this, and the arrangement position of the semiconductor elements (switching element 31 and diode element 32) on the element substrate 42 is shifted to the + X direction side, and the first electrode member 91 and the second electrode member 91 are arranged. It is also possible to replace the position of the electrode member 92 in the extending orthogonal direction X so that the first bus bar 51 is joined to the second electrode member 92 and the second bus bar 52 is joined to the first electrode member 91. .
　また、上記の各実施形態では、第一バスバー５１が電極部材９０（本例では第一電極部材９１）を介してスイッチング素子３１のコレクタ電極及びダイオード素子３２のカソード電極の双方と導通し、第二バスバー５２が電極部材９０（本例では第二電極部材９２）を介してスイッチング素子３１のエミッタ電極及びダイオード素子３２のアノード電極の双方と導通する構成を例として説明した。しかし、本発明の実施形態はこれに限定されるものではなく、第一バスバー５１が電極部材９０を介してスイッチング素子３１のエミッタ電極及びダイオード素子３２のアノード電極の双方と導通し、第二バスバー５２が電極部材９０介してスイッチング素子３１のコレクタ電極及びダイオード素子３２のカソード電極の双方と導通する構成とすることも可能である。 In each of the above embodiments, the first bus bar 51 is electrically connected to both the collector electrode of the switching element 31 and the cathode electrode of the diode element 32 via the electrode member 90 (first electrode member 91 in this example). The configuration in which the two bus bars 52 are electrically connected to both the emitter electrode of the switching element 31 and the anode electrode of the diode element 32 through the electrode member 90 (second electrode member 92 in this example) has been described as an example. However, the embodiment of the present invention is not limited to this, and the first bus bar 51 is electrically connected to both the emitter electrode of the switching element 31 and the anode electrode of the diode element 32 via the electrode member 90, and the second bus bar. It is also possible to adopt a configuration in which 52 is electrically connected to both the collector electrode of the switching element 31 and the cathode electrode of the diode element 32 through the electrode member 90.
（３）上記の各実施形態では、支持部７１の少なくとも一部が支持体６０の内部に固定保持される構成を例として説明したが、支持部７１の少なくとも一部が支持体６０の端面（上面、下面、又は側面）に固定された構成とすることもできる。また、上記の各実施形態では、支持体６０が、接合部７０を挟んだ両側に設けられる一対の支持部７１を一体的に支持する構成を例として説明したが、当該一対の支持部７１が、互いに別の支持体により支持される構成とすることも可能である。 (3) In each of the above-described embodiments, the configuration in which at least a part of the support part 71 is fixedly held inside the support body 60 has been described as an example, but at least a part of the support part 71 is an end surface of the support body 60 ( It can also be set as the structure fixed to the upper surface, the lower surface, or the side surface. Further, in each of the above-described embodiments, the configuration in which the support body 60 integrally supports a pair of support portions 71 provided on both sides of the joint portion 70 has been described as an example. It is also possible to adopt a configuration that is supported by different supports.
（４）上記の各実施形態では、バスバー５０が備える一対の支持部７１の双方が、電極部材９０への接合時に支持体６０に支持されるとともに、当該接合の後も支持体６０により支持される構成を例として説明した。しかし、本発明の実施形態はこれに限定されるものではなく、バスバー５０が備える一対の支持部７１の内の一方のみが支持体６０に支持され、他方の支持部７１が治具等により電極部材９０への接合時にのみ支持される構成とすることもできる。また、バスバー５０が備える一対の支持部７１の双方が、支持体６０には支持されずに支持体６０とは独立に（分離して）配置され、双方の支持部が治具等により電極部材９０への接合時にのみ支持される構成とすることも可能である。この場合、バスバーモジュール１が支持体６０を備えない構成とすることも可能である。 (4) In each of the embodiments described above, both of the pair of support portions 71 included in the bus bar 50 are supported by the support body 60 at the time of joining to the electrode member 90 and are also supported by the support body 60 after the joining. The configuration is described as an example. However, the embodiment of the present invention is not limited to this, and only one of the pair of support portions 71 included in the bus bar 50 is supported by the support body 60, and the other support portion 71 is electroded by a jig or the like. It can also be configured to be supported only at the time of joining to the member 90. In addition, both of the pair of support portions 71 included in the bus bar 50 are not supported by the support body 60 and are arranged (separated) from the support body 60 independently. It is also possible to adopt a configuration that is supported only at the time of joining to 90. In this case, the bus bar module 1 may be configured not to include the support body 60.
（５）上記の各実施形態では、電気的接続装置としてのバスバーモジュール１が、回転電機２を制御するためのインバータモジュール３を構成する場合を例として説明したが、本発明に係る電気的接続装置を、他の用途のインバータモジュールを構成するバスバーモジュールや、インバータモジュール以外のモジュールを構成するバスバーモジュールに適用することも可能である。また、上記の各実施形態では、本発明に係る接続部材を、バスバーモジュール１を構成するバスバー５０に適用した場合を例として説明したが、バスバーモジュール以外のその他の電気的接続装置に備えられる接続部材に本発明を適用することも可能である。 (5) In each of the embodiments described above, the case where the bus bar module 1 as the electrical connection device constitutes the inverter module 3 for controlling the rotating electrical machine 2 has been described as an example. However, the electrical connection according to the present invention is described. It is also possible to apply the apparatus to a bus bar module that constitutes an inverter module for other uses or a bus bar module that constitutes a module other than the inverter module. Further, in each of the above embodiments, the connection member according to the present invention has been described as an example in which the connection member according to the present invention is applied to the bus bar 50 constituting the bus bar module 1, but the connection provided in other electrical connection devices other than the bus bar module. The present invention can also be applied to members.
（６）その他の構成に関しても、本明細書において開示された実施形態は全ての点で例示であって、本発明の実施形態はこれに限定されない。すなわち、本願の特許請求の範囲に記載されていない構成に関しては、本発明の目的を逸脱しない範囲内で適宜改変することが可能である。 (6) Regarding other configurations as well, the embodiments disclosed herein are illustrative in all respects, and embodiments of the present invention are not limited thereto. In other words, configurations that are not described in the claims of the present application can be modified as appropriate without departing from the object of the present invention.
　本発明は、電極部材に接合される接合部を備えるとともに所定の延在方向に延びる板状の接続部材に好適に利用することができる。 The present invention can be suitably used for a plate-like connection member that includes a joint portion joined to an electrode member and extends in a predetermined extending direction.
１：バスバーモジュール（電気的接続装置）
１０：側縁部
２１：第一凹部
２２：第二凹部
２５：延在方向区画部
２６：接合部側延在部
２７：支持部側延在部
５０：バスバー（接続部材）
６０：支持体
７０：接合部
７１：支持部
８０：連結部
８１：第一連結部
８２：第二連結部
９０：電極部材
Ｘ：延在直交方向
Ｘ１：第一方向
Ｘ２：第二方向
Ｙ：延在方向 1: Busbar module (electrical connection device)
10: Side edge portion 21: First concave portion 22: Second concave portion 25: Extension direction partitioning portion 26: Joining portion side extending portion 27: Support portion side extending portion 50: Bus bar (connection member)
60: support body 70: joint part 71: support part 80: connection part 81: first connection part 82: second connection part 90: electrode member X: extending orthogonal direction X1: first direction X2: second direction Y: Extension direction

Claims (8)

  1. 　電極部材に接合される接合部を備えるとともに所定の延在方向に延びる板状の接続部材であって、
    　前記接合部を挟んだ両側に、前記電極部材への接合時に支持される支持部と、前記接合部と前記支持部とを連結する連結部と、を備え、
    　前記連結部は、前記延在方向に沿った前記接合部側と前記支持部側との双方において側縁部により区画された延在方向区画部を備え、
    　前記延在方向に沿った少なくとも一部の領域において前記延在方向に直交する延在直交方向の前記連結部の幅が、前記接合部よりも狭く形成されている接続部材。     A plate-like connecting member that includes a joint portion to be joined to the electrode member and extends in a predetermined extending direction,
    On both sides of the joint part, a support part supported at the time of joining to the electrode member, and a connecting part for connecting the joint part and the support part,
    The connecting portion includes an extending direction partition section partitioned by a side edge portion on both the joint section side and the support section side along the extending direction;
    The connection member in which the width of the connecting portion in the extending orthogonal direction orthogonal to the extending direction is narrower than that of the joining portion in at least a part of the region along the extending direction.
  2. 　前記延在方向区画部の少なくとも一部の前記延在方向の幅が、前記接合部の前記延在直交方向の幅よりも狭く形成されている請求項１に記載の接続部材。 The connecting member according to claim 1, wherein a width of at least a part of the extending direction partitioning portion is formed to be narrower than a width of the joining portion in the extending orthogonal direction.
  3. 　前記連結部には、前記延在直交方向の一方側である第一方向側の側縁部が前記第一方向とは反対側の第二方向側へ向かって窪んだ第一凹部と、前記第二方向側の側縁部が前記第一方向側へ向かって窪んだ第二凹部とが、前記延在方向に見て一部が重複するように形成されており、
    　前記延在方向区画部は、前記第一凹部と前記第二凹部とに挟まれた領域に形成されている請求項１又は２に記載の接続部材。     The connecting portion includes a first concave portion in which a side edge portion on the first direction side, which is one side of the extending orthogonal direction, is recessed toward the second direction side opposite to the first direction, and the first The second recessed portion in which the side edge portion on the two-direction side is recessed toward the first direction side is formed so as to partially overlap when viewed in the extending direction,
    The connecting member according to claim 1, wherein the extending direction partitioning portion is formed in a region sandwiched between the first recess and the second recess.
  4. 　前記接合部を挟んだ両側に設けられる一対の前記連結部の一方である第一連結部では、前記第一凹部が前記第二凹部よりも前記接合部側に形成され、一対の前記連結部の他方である第二連結部では、前記第二凹部が前記第一凹部よりも前記接合部側に形成されている請求項３に記載の接続部材。 In the first connection part, which is one of the pair of connection parts provided on both sides of the joint part, the first recess is formed on the joint part side of the second recess, and the pair of connection parts The connection member according to claim 3, wherein, in the second connection portion that is the other, the second recess is formed closer to the joint than the first recess.
  5. 　前記接合部を挟んだ両側に設けられる一対の前記連結部のそれぞれにおいて、前記第一凹部及び前記第二凹部の内の前記接合部側に位置する方の前記延在方向の幅が、他方よりも広く形成されている請求項３又は４に記載の接続部材。 In each of the pair of connecting portions provided on both sides of the joint portion, the width in the extending direction of the first concave portion and the second concave portion located on the joint portion side is larger than the other. The connection member according to claim 3 or 4, which is also widely formed.
  6. 　前記延在直交方向に見て、前記第一凹部が形成されている前記延在方向に沿った領域と、前記第二凹部が形成されている前記延在方向に沿った領域とが、前記延在方向に異なる位置とされている請求項３から５のいずれか一項に記載の接続部材。 When viewed in the extending orthogonal direction, a region along the extending direction in which the first recess is formed and a region along the extending direction in which the second recess is formed are the extension. The connecting member according to any one of claims 3 to 5, wherein the connecting member is located at a different position in the current direction.
  7. 　前記延在方向区画部は、前記延在直交方向に延びるように形成され、
    　前記延在方向区画部の前記延在直交方向の一方の端部に、当該端部から前記接合部側に延びる接合部側延在部が連結されているとともに、他方の端部に、当該端部から前記支持部側に延びる支持部側延在部が連結されている請求項１から６のいずれか一項に記載の接続部材。     The extending direction section is formed to extend in the extending orthogonal direction,
    A joint side extending portion extending from the end portion to the joint portion side is connected to one end portion in the extending orthogonal direction of the extending direction partitioning portion, and the end is connected to the other end portion. The connection member according to any one of claims 1 to 6, wherein a support portion side extending portion extending from a portion to the support portion side is coupled.
  8. 　請求項１から７のいずれか一項に記載の接続部材と、前記接続部材を支持する絶縁性の支持体と、を備え、
    　前記支持体が、前記接合部を挟んだ両側に設けられる一対の前記支持部を一体的に支持するように構成されている電気的接続装置。     A connecting member according to any one of claims 1 to 7 and an insulating support that supports the connecting member,
    The electrical connection device is configured such that the support integrally supports a pair of the support portions provided on both sides of the joint portion.
PCT/JP2012/074917 2011-09-28 2012-09-27 Connection member and electrical connection device WO2013047671A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-212690 2011-09-28
JP2011212690 2011-09-28

Publications (1)

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WO2013047671A1 true WO2013047671A1 (en) 2013-04-04

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008098586A (en) * 2006-10-16 2008-04-24 Fuji Electric Device Technology Co Ltd Semiconductor device
JP2010103222A (en) * 2008-10-22 2010-05-06 Fuji Electric Systems Co Ltd Semiconductor device
JP2010278107A (en) * 2009-05-27 2010-12-09 Aisin Aw Co Ltd Semiconductor device and connection member
WO2012029489A1 (en) * 2010-09-02 2012-03-08 アイシン・エィ・ダブリュ株式会社 Electrical connector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008098586A (en) * 2006-10-16 2008-04-24 Fuji Electric Device Technology Co Ltd Semiconductor device
JP2010103222A (en) * 2008-10-22 2010-05-06 Fuji Electric Systems Co Ltd Semiconductor device
JP2010278107A (en) * 2009-05-27 2010-12-09 Aisin Aw Co Ltd Semiconductor device and connection member
WO2012029489A1 (en) * 2010-09-02 2012-03-08 アイシン・エィ・ダブリュ株式会社 Electrical connector

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