JP2021158860A - Rotary electric machine device - Google Patents

Rotary electric machine device Download PDF

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JP2021158860A
JP2021158860A JP2020058964A JP2020058964A JP2021158860A JP 2021158860 A JP2021158860 A JP 2021158860A JP 2020058964 A JP2020058964 A JP 2020058964A JP 2020058964 A JP2020058964 A JP 2020058964A JP 2021158860 A JP2021158860 A JP 2021158860A
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housing
rotary electric
top plate
fastening
side wall
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JP7412243B2 (en
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智樹 川村
Tomoki Kawamura
智樹 川村
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Renault SAS
Nissan Motor Co Ltd
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Renault SAS
Nissan Motor Co Ltd
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Abstract

To provide a rotary electric machine device which comprises a housing for housing a motor and a casing attached to the housing, and can reduce abnormal noise that may occur in the casing.SOLUTION: A rotary electric machine device comprises: a housing that houses a motor; an inverter that is attached to the housing and is connected to the motor; and a casing attached to the housing in a manner covering the inverter. An opening for performing work for attaching a component to the inverter is formed in the casing. The casing includes; a plurality of fixing portions for fixing the casing to the housing; and a plurality of screw holes disposed around the opening and for fastening a lid portion for closing the opening. The plurality of fixing portions includes a pair of fixing portions that are provided on one side wall of the casing and the other side wall opposite to the one side wall and face each other. The plurality of screw holes is disposed in a region, in the casing, interposed between the pair of fixing portions in a plan view.SELECTED DRAWING: Figure 5

Description

本発明は、回転電機装置に関する。 The present invention relates to a rotary electric machine.

特許文献1は、モータを収容するハウジングと、ハウジングを取り付けられるとともにモータに接続するインバータと、インバータを覆うようにハウジングに取り付けられる筐体を備える回転電機装置を開示している。 Patent Document 1 discloses a rotary electric device including a housing for accommodating a motor, an inverter to which the housing is attached and connected to the motor, and a housing to be attached to the housing so as to cover the inverter.

国際公開第2016/199219号International Publication No. 2016/199219

しかし、特許文献1に示す回転電機装置では、起振源であるモータからの振動が筐体に伝播し、筐体で異音が発生し得る。 However, in the rotary electric device shown in Patent Document 1, the vibration from the motor, which is the vibration source, propagates to the housing, and abnormal noise may be generated in the housing.

そこで、本発明は、モータを収容するハウジングに取り付けられた筐体で発生し得る異音を低減する回転電機装置を提供することを目的とする。 Therefore, an object of the present invention is to provide a rotary electric device that reduces abnormal noise that may occur in a housing attached to a housing that houses a motor.

本発明の一態様における回転電機装置は、回転電機を収容するハウジングと、ハウジングに取り付けられるとともに回転電機に接続された電力変換装置と、電力変換装置を覆うようにハウジングに取り付けられる筐体と、を含む回転電機装置である。筐体には、電力変換装置に対して部品の取り付け作業を行うための開口部が形成されるとともに、ハウジングに筐体を固定するための複数の固定部と、開口部の周囲に配置され、開口部を閉止するための蓋部を締結するための複数の締結部と、を含み、複数の固定部は、筐体の一方の側壁と、一方の側壁に対向する他方の側壁に設けられるとともに互いに対向する一対固定部を含み、締結部は、平面視で筐体において一対の固定部の間に挟まれる領域に複数配置されている。 The rotary electric machine according to one aspect of the present invention includes a housing for accommodating the rotary electric machine, a power conversion device attached to the housing and connected to the rotary electric machine, and a housing attached to the housing so as to cover the power conversion device. It is a rotary electric machine including. The housing is formed with openings for attaching parts to the power conversion device, and is arranged around the openings and a plurality of fixing portions for fixing the housing to the housing. A plurality of fastening portions for fastening the lid portion for closing the opening portion, and the plurality of fixing portions are provided on one side wall of the housing and the other side wall facing the one side wall. A plurality of fastening portions are arranged in a region sandwiched between the pair of fixing portions in the housing in a plan view, including a pair of fixing portions facing each other.

上記態様であれば、固定部は、ハウジング(モータ)から最初に振動が伝播する部分となるが、筐体において平面視で一対の固定部に挟まれる領域の剛性が締結部により向上するので、筐体(特に天板)で発生し得る異音を低減できる。 In the above embodiment, the fixed portion is the portion where the vibration first propagates from the housing (motor), but the rigidity of the region sandwiched between the pair of fixed portions in the housing in a plan view is improved by the fastening portion. It is possible to reduce abnormal noise that may occur in the housing (particularly the top plate).

図1は、本実施形態の回転電機装置の斜視図である。FIG. 1 is a perspective view of the rotary electric machine of the present embodiment. 図2は、本実施形態の回転電機装置の斜視図(図1の斜視図をXY面内で90度程度回転させたもの)である。FIG. 2 is a perspective view of the rotary electric machine of the present embodiment (a perspective view of FIG. 1 rotated by about 90 degrees in the XY plane). 図3は、本実施形態の回転電機装置を構成する筐体の斜視図である。FIG. 3 is a perspective view of a housing constituting the rotary electric device of the present embodiment. 図4は、本実施形態の回転電機装置を構成するインバータの模式図である。FIG. 4 is a schematic view of an inverter constituting the rotary electric machine of the present embodiment. 図5は、本実施形態の回転電機装置を構成する筐体の平面図である。FIG. 5 is a plan view of a housing constituting the rotary electric device of the present embodiment. 図6は、本実施形態の回転電機装置を構成する筐体の底面図である。FIG. 6 is a bottom view of a housing constituting the rotary electric device of the present embodiment. 図7は、図5のA−A線断面図である。FIG. 7 is a cross-sectional view taken along the line AA of FIG. 図8は、図5のB−B線断面図である。FIG. 8 is a cross-sectional view taken along the line BB of FIG.

以下、図面を参照しながら本発明の実施形態について説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[本実施形態の基本構成]
図1は、本実施形態の回転電機装置100の斜視図である。図2は、本実施形態の回転電機装置100の斜視図(図1の斜視図をXY面内で90度程度回転させたもの)である。図3は、本実施形態の回転電機装置100を構成する筐体3の斜視図である。なお、図においてX軸、Y軸、Z軸は互いに直行するものとする。
[Basic configuration of this embodiment]
FIG. 1 is a perspective view of the rotary electric machine device 100 of the present embodiment. FIG. 2 is a perspective view of the rotary electric machine 100 of the present embodiment (the perspective view of FIG. 1 is rotated by about 90 degrees in the XY plane). FIG. 3 is a perspective view of a housing 3 constituting the rotary electric machine device 100 of the present embodiment. In the figure, the X-axis, Y-axis, and Z-axis are assumed to be orthogonal to each other.

図1、図2に示すように、回転電機装置100は、三相交流のモータ(回転電機、不図示)を収容するハウジング1と、ハウジング1に取り付けられたインバータ2(電力変換装置、図4参照)と、インバータ2を覆うようにハウジング1に取り付けられる箱型の筐体3と、を含み、機電一体型の構造を有している。 As shown in FIGS. 1 and 2, the rotary electric device 100 includes a housing 1 for accommodating a three-phase AC motor (rotary electric machine, not shown) and an inverter 2 (power conversion device, FIG. 4) attached to the housing 1. (See) and a box-shaped housing 3 attached to the housing 1 so as to cover the inverter 2, and has a mechanical and electrical integrated structure.

ハウジング1は、前記のようにモータ(不図示)を収容するが、モータ(不図示)を構成するロータシャフト9がハウジング1から露出している。図に示すように、ロータシャフト9はX軸方向を軸方向としている。 The housing 1 houses the motor (not shown) as described above, but the rotor shaft 9 constituting the motor (not shown) is exposed from the housing 1. As shown in the figure, the rotor shaft 9 has an X-axis direction as an axial direction.

図1乃至図3に示すように、筐体3は、例えば金属で形成され、X軸方向を長辺方向とし、Y軸方向を短辺方向とする矩形の箱型形状を有し、−Z軸方向の端部が開放されている(図6参照)。また、筐体3は、締結ボルト6によりハウジング1に固定されている。 As shown in FIGS. 1 to 3, the housing 3 is formed of, for example, metal, has a rectangular box shape with the X-axis direction as the long side direction and the Y-axis direction as the short side direction, and has a -Z shape. The axial end is open (see FIG. 6). Further, the housing 3 is fixed to the housing 1 by the fastening bolts 6.

筐体3の、−Y軸側(長辺)の側壁、+Y軸側(長辺)の側壁には、それぞれ固定部31(固定部31A,31B,31C,31D)が配置されている。固定部31Aは、−Y軸側(長辺)の側壁において中央から+X軸側に偏った位置に配置され、固定部31Bは、−Y軸側(長辺)の側壁において中央から−X軸側に偏った位置に配置されている。固定部31Cは、+Y軸側(長辺)の側壁において中央から+X軸側に偏った位置に配置され、固定部31Dは、+Y軸側(長辺)の側壁において中央から−X軸側に偏った位置に配置されている。 Fixing portions 31 (fixing portions 31A, 31B, 31C, 31D) are arranged on the side wall on the −Y axis side (long side) and the side wall on the + Y axis side (long side) of the housing 3, respectively. The fixed portion 31A is arranged at a position deviated from the center to the + X axis side on the side wall on the -Y axis side (long side), and the fixed portion 31B is arranged on the side wall on the -Y axis side (long side) from the center to the -X axis. It is placed in a position that is biased to the side. The fixed portion 31C is arranged at a position deviated from the center to the + X-axis side on the side wall on the + Y-axis side (long side), and the fixed portion 31D is arranged from the center to the -X-axis side on the side wall on the + Y-axis side (long side). It is placed in a biased position.

また、固定部31Aと固定部31Cは、筐体3を挟んでY軸方向で互いに対向し、固定部31Bと固定部31Dは、筐体3を挟んでY軸方向で互いに対向している。なお、固定部31A,31Cは、筐体3の側壁の+X軸方向の端部に配置してもよく、固定部31B,31Dは、筐体3の側壁の−X軸方向の端部に配置してもよい。 Further, the fixed portion 31A and the fixed portion 31C face each other in the Y-axis direction with the housing 3 interposed therebetween, and the fixed portion 31B and the fixed portion 31D face each other in the Y-axis direction with the housing 3 interposed therebetween. The fixing portions 31A and 31C may be arranged at the + X-axis direction end of the side wall of the housing 3, and the fixing portions 31B and 31D may be arranged at the −X-axis direction end of the side wall of the housing 3. You may.

固定部31(固定部31A,31B,31C,31D)は、突出部311(図3参照)とリブ部313を備える。突出部311は、筐体3の側壁の−Z軸方向の端部からY軸方向に延出する部材であり、その中央部には、締結ボルト6を挿通する挿通孔312(図5等参照)が配置されている。 The fixing portion 31 (fixing portion 31A, 31B, 31C, 31D) includes a protruding portion 311 (see FIG. 3) and a rib portion 313. The projecting portion 311 is a member extending in the Y-axis direction from the end portion of the side wall of the housing 3 in the −Z-axis direction, and in the central portion thereof, an insertion hole 312 (see FIG. 5 and the like) through which the fastening bolt 6 is inserted. ) Is placed.

リブ部313は、突出部311と筐体3の側壁との間の剛性を高めるために形成されており、例えば突出部311に対して一対で配置されている。 The rib portions 313 are formed to increase the rigidity between the protrusion 311 and the side wall of the housing 3, and are arranged in pairs with respect to, for example, the protrusion 311.

リブ部313は、筐体3の側壁であって、平面視で突出部311をX軸方向から挟む位置からY軸方向に延出し、−Z軸方向の端部が突出部311に接続している。またリブ部313は、Z軸方向に延びる部材であるが、+Z軸方向に向かうにつれてY軸方向に延出する長さが短くなるテーパー形状を有している。 The rib portion 313 is a side wall of the housing 3, and extends in the Y-axis direction from a position where the protrusion 311 is sandwiched from the X-axis direction in a plan view, and the end portion in the −Z-axis direction is connected to the protrusion 311. There is. The rib portion 313 is a member that extends in the Z-axis direction, but has a tapered shape in which the length extending in the Y-axis direction becomes shorter toward the + Z-axis direction.

筐体3の+X軸側の側壁には、挿通孔32A,32Bが形成されている。挿通孔32Aには、インバータ2に接続するバスバー4N(図4参照)が挿通され、挿通孔32Bにはインバータ2に接続するバスバー4P(図4参照)が挿通される。 Insertion holes 32A and 32B are formed on the side wall of the housing 3 on the + X axis side. A bus bar 4N (see FIG. 4) connected to the inverter 2 is inserted into the insertion hole 32A, and a bus bar 4P (see FIG. 4) connected to the inverter 2 is inserted into the insertion hole 32B.

筐体3の上部(天板)には、挿通孔32A,32Bに隣接する第1天板部33と、第1天板部33よりも−X軸方向側に配置された第2天板部38が配置されている。第1天板部33には、2つの開口部35A,35B(図3)が形成され、さらに当該開口部35A,35Bを閉止する蓋部5が取り付けられている。 On the upper part (top plate) of the housing 3, a first top plate portion 33 adjacent to the insertion holes 32A and 32B and a second top plate portion arranged on the −X axis direction side from the first top plate portion 33 38 are arranged. Two openings 35A and 35B (FIG. 3) are formed on the first top plate portion 33, and a lid portion 5 for closing the openings 35A and 35B is further attached to the first top plate portion 33.

図3に示すように、蓋部5には、締結ボルト7を挿通する挿通孔51(本実施形態では8個)と、開口部35A,35Bの周囲に配置された位置決め用の突起341を挿通する挿通孔52が形成されている。また、第1天板部33には締結ボルト7が螺合するネジ穴36と、蓋部5の位置決めを行うための突起341が配置されているが、これらについては後述する。 As shown in FIG. 3, the lid portion 5 is inserted with insertion holes 51 (8 in this embodiment) for inserting the fastening bolts 7 and positioning protrusions 341 arranged around the openings 35A and 35B. An insertion hole 52 is formed. Further, the first top plate portion 33 is provided with a screw hole 36 into which the fastening bolt 7 is screwed and a protrusion 341 for positioning the lid portion 5, which will be described later.

図4は、本実施形態の回転電機装置100を構成するインバータ2の模式図である。図4に示すように、インバータ2(電力変換装置)は、基板21上にパワーモジュール22と平滑コンデンサ25が配置されたものである。 FIG. 4 is a schematic view of an inverter 2 constituting the rotary electric machine device 100 of the present embodiment. As shown in FIG. 4, the inverter 2 (power conversion device) has a power module 22 and a smoothing capacitor 25 arranged on a substrate 21.

パワーモジュール22は、IGBT(Insulated Gate Bipolar Transistor)等のパワートランジスタや帰還ダイオードにより構成され、PWM(Pulse Width Modulation)制御により、直流電流を交流電流に変換し、また交流電流を直流電流に変換するものである。パワーモジュール22は、モータ側に接続する端子として、バスバー23U,23V,23Wを有し、平滑コンデンサ25側に接続する端子として、バスバーP(不図示)、バスバーN(不図示)を有する。 The power module 22 is composed of a power transistor such as an IGBT (Insulated Gate Bipolar Transistor) and a feedback diode, and converts a direct current into an alternating current and converts an alternating current into a direct current by PWM (Pulse Wide Modulation) control. It is a thing. The power module 22 has bus bars 23U, 23V, and 23W as terminals connected to the motor side, and has bus bars P (not shown) and bus bars N (not shown) as terminals connected to the smoothing capacitor 25 side.

平滑コンデンサ25は、パワーモジュール22から出力される直流電流(直流電圧)を平滑化するものであり、パワーモジュール22のバスバーP(不図示)に接続するバスバー26Pと、パワーモジュール22のバスバーN(不図示)に接続するバスバー26Nと、外部(バッテリ)に電気的に接続するバスバー27P,27Nを備える。 The smoothing capacitor 25 smoothes the direct current (direct current voltage) output from the power module 22, and has a bus bar 26P connected to a bus bar P (not shown) of the power module 22 and a bus bar N (not shown) of the power module 22. It includes a bus bar 26N connected to the outside (not shown) and bus bars 27P and 27N electrically connected to the outside (battery).

基板21には、バスバー27Pとバスバー4P、及びバスバー27Nとバスバー4Nを固定するための端子台28が配置されている。端子台28には、締結ボルト29と螺合するネジ穴(不図示)が形成されている。またバスバー27P,27N、バスバー4P,4Nの先端には締結ボルト29を挿通する挿通孔(不図示)が形成されている。 A terminal block 28 for fixing the bus bar 27P and the bus bar 4P, and the bus bar 27N and the bus bar 4N is arranged on the board 21. The terminal block 28 is formed with a screw hole (not shown) for screwing with the fastening bolt 29. Further, an insertion hole (not shown) through which the fastening bolt 29 is inserted is formed at the tip of the bus bars 27P, 27N and the bus bars 4P, 4N.

本実施形態の回転電機装置100の組み立て工程としては、まずハウジング1にインバータ2を取り付ける。その際、基板21をハウジング1に取り付けるとともに、インバータ2のバスバー23U,23V,23Wをモータ側に接続する。次に、筐体3をハウジング1に取り付ける。その際、固定部31(突出部311)に締結ボルト6(図1、図2)を挿通し、ハウジング1に形成されたネジ穴(不図示)に締結ボルト6を螺合させることで、筐体3をハウジング1に固定する。 As an assembly process of the rotary electric machine 100 of the present embodiment, first, the inverter 2 is attached to the housing 1. At that time, the substrate 21 is attached to the housing 1, and the bus bars 23U, 23V, 23W of the inverter 2 are connected to the motor side. Next, the housing 3 is attached to the housing 1. At that time, the fastening bolt 6 (FIGS. 1 and 2) is inserted into the fixing portion 31 (protruding portion 311), and the fastening bolt 6 is screwed into the screw hole (not shown) formed in the housing 1 to form a housing. The body 3 is fixed to the housing 1.

上記のように、ハウジング1にインバータ2及び筐体3を取り付けると、図4に示すように、端子台28(締結ボルト29)が平面視で視認できるように筐体3の開口部35A,35B(破線で表示)が配置される。また、バッテリ(不図示)に電気的に接続するバスバー4P,4Nは、前記の筐体3に形成された挿通孔32A,32B(図1−3,8参照)からそれぞれ挿通して端子台28にアクセスすることができる。よって、開口部35A,35Bから締結ボルト29を締結するための工具を挿入して締結作業を行うことができる。 When the inverter 2 and the housing 3 are attached to the housing 1 as described above, as shown in FIG. 4, the openings 35A and 35B of the housing 3 are visible so that the terminal block 28 (fastening bolt 29) can be visually recognized in a plan view. (Indicated by a broken line) is placed. Further, the bus bars 4P and 4N electrically connected to the battery (not shown) are inserted through the insertion holes 32A and 32B (see FIGS. 1 to 3 and 8) formed in the housing 3 and are inserted into the terminal block 28, respectively. Can be accessed. Therefore, the fastening operation can be performed by inserting a tool for fastening the fastening bolt 29 from the openings 35A and 35B.

したがって、バスバー27Pの挿通孔とバスバー4Pの挿通孔を端子台28の一方のネジ穴(不図示)に連通させ、バスバー27Nの挿通孔とバスバー4Nの挿通孔を端子台28の他方のネジ穴(不図示)に連通させた状態で、締結ボルト29を端子台28の2つのネジ穴(不図示)に螺合させる。これにより、バスバー27Pとバスバー4Pとを互いに固定させ、バスバー27Nとバスバー4Nとを互いに固定させ、パワーモジュール22(及び平滑コンデンサ25)と外部のバッテリ(不図示)とを互いに電気的に接続させることができる。 Therefore, the insertion hole of the bus bar 27P and the insertion hole of the bus bar 4P are communicated with one screw hole (not shown) of the terminal block 28, and the insertion hole of the bus bar 27N and the insertion hole of the bus bar 4N are connected to the other screw hole of the terminal block 28. The fastening bolt 29 is screwed into the two screw holes (not shown) of the terminal block 28 in a state of being communicated with (not shown). As a result, the bus bar 27P and the bus bar 4P are fixed to each other, the bus bar 27N and the bus bar 4N are fixed to each other, and the power module 22 (and the smoothing capacitor 25) and the external battery (not shown) are electrically connected to each other. be able to.

締結作業後は、蓋部5で開口部35A,34Bを閉止し、締結ボルト7(締結部)を用いて蓋部5を筐体3に固定する。これにより、組み立て工程は終了する。なお、開口部35A,35Bを用いる他の作業としては、例えば、インバータ2にヒューズ(不図示)が搭載されている場合に、当該ヒューズを交換する作業がある。 After the fastening work, the openings 35A and 34B are closed by the lid portion 5, and the lid portion 5 is fixed to the housing 3 by using the fastening bolt 7 (fastening portion). This completes the assembly process. As another work using the openings 35A and 35B, for example, when a fuse (not shown) is mounted on the inverter 2, there is a work of replacing the fuse.

ところで、モータを駆動させると、回転による振動がハウジング1を介して筐体3に伝播するが、その際に筐体3から異音が発生する場合がある。しかし、本実施形態では、以下に説明するように、その異音を低減する構成を有している。 By the way, when the motor is driven, the vibration due to the rotation propagates to the housing 3 via the housing 1, but at that time, an abnormal noise may be generated from the housing 3. However, the present embodiment has a configuration for reducing the abnormal noise as described below.

図5は、本実施形態の回転電機装置100を構成する筐体3の平面図である。図6は、本実施形態の回転電機装置100を構成する筐体3の底面図である。図7は、図5のA−A線断面図である。図8は、図5のB−B線断面図である。 FIG. 5 is a plan view of the housing 3 constituting the rotary electric machine device 100 of the present embodiment. FIG. 6 is a bottom view of the housing 3 constituting the rotary electric machine device 100 of the present embodiment. FIG. 7 is a cross-sectional view taken along the line AA of FIG. FIG. 8 is a cross-sectional view taken along the line BB of FIG.

図5に示すように、第1天板部33は、ボス部34と接続部37を含む。ボス部34は、前記の開口部35A,35Bの周囲に配置されたネジ穴36(締結部)と、突起341を包含する。開口部35A,35Bは、それぞれ例えばY軸方向を長手方向とする長円形を有しており、Y軸方向に並んで配置されている。ネジ穴36は、開口部35A及び開口部35Bの周囲をそれぞれ周回するように複数(図では8個)配置されている。突起341は、開口部35Aに隣接する位置と、開口部35Bに隣接する位置に配置されている。 As shown in FIG. 5, the first top plate portion 33 includes a boss portion 34 and a connecting portion 37. The boss portion 34 includes a screw hole 36 (fastening portion) arranged around the openings 35A and 35B, and a protrusion 341. The openings 35A and 35B each have an oval shape with the Y-axis direction as the longitudinal direction, and are arranged side by side in the Y-axis direction. A plurality of screw holes 36 (8 in the figure) are arranged so as to orbit around the openings 35A and 35B, respectively. The protrusions 341 are arranged at a position adjacent to the opening 35A and a position adjacent to the opening 35B.

本実施形態では、筐体3の側壁であって+X軸側に配置された一対の固定部31A,31Cに平面視で挟まれた筐体3上の特定領域8(領域)にネジ穴36(締結部)が複数(図5等では4個)配置されている。 In the present embodiment, the screw holes 36 (areas) in the specific area 8 (area) on the housing 3 sandwiched between the pair of fixing portions 31A and 31C arranged on the + X-axis side of the side wall of the housing 3 in a plan view. A plurality of fastening portions) (4 in FIG. 5 and the like) are arranged.

モータで発生する振動はハウジング1と筐体3の固定箇所、すなわち固定部31に伝播し、これが側壁を伝って筐体3の天板(第1天板部33、第2天板部38)に伝播し、天板において振動に起因する異音が発生し得る。特に、平面視で筐体3において前記の一対の固定部31A,31Cの間となる特定領域8に伝播した振動の成分により、第2天板部38(若しくは第1天板部33)における異音が顕著になる虞がある。 The vibration generated by the motor propagates to the fixed portion of the housing 1 and the housing 3, that is, the fixed portion 31, and this propagates along the side wall to the top plate of the housing 3 (first top plate portion 33, second top plate portion 38). Propagation to, and abnormal noise due to vibration may be generated on the top plate. In particular, the difference in the second top plate portion 38 (or the first top plate portion 33) due to the component of the vibration propagated in the specific region 8 between the pair of fixed portions 31A and 31C in the housing 3 in a plan view. The sound may be noticeable.

しかし、本実施形態では、特定領域8にネジ穴36(締結部)が形成されている。このネジ穴36には締結ボルト7(締結部)と蓋部5が固定される。したがって、一対の固定部31A,31Cの間となる特定領域8の剛性(例えば、天板のZ方向の振幅の振動に対する剛性)が向上するので、異音の発生を抑制することができる。特に、ネジ穴36(締結部)をY軸方向(特定領域8の長手方向)に並ぶように配置することで、特定領域8の剛性が向上し、異音の発生をさらに抑制することができる。 However, in the present embodiment, the screw hole 36 (fastening portion) is formed in the specific region 8. A fastening bolt 7 (fastening portion) and a lid portion 5 are fixed to the screw hole 36. Therefore, the rigidity of the specific region 8 between the pair of fixed portions 31A and 31C (for example, the rigidity of the top plate with respect to the vibration of the amplitude in the Z direction) is improved, so that the generation of abnormal noise can be suppressed. In particular, by arranging the screw holes 36 (fastening portions) so as to line up in the Y-axis direction (longitudinal direction of the specific region 8), the rigidity of the specific region 8 can be improved and the generation of abnormal noise can be further suppressed. ..

ここで、特定領域8とは、例えば、図5−図8に示すように筐体3において一点鎖線で囲まれた矩形若しくは直方体の内側部分に該当する。また、特定領域8としては、一対の固定部31A,31C(リブ部313)の+X軸方向の端部から−X軸方向の端部までの位置を短辺としてY軸方向に長手方向を有する領域とすることもできるが、当該短辺の長さをさらに一定の割合(例えば20%)でX軸方向に拡張してもよい。 Here, the specific region 8 corresponds to, for example, an inner portion of a rectangular parallelepiped or a rectangular parallelepiped surrounded by a chain line in the housing 3 as shown in FIGS. 5 to 8. Further, the specific region 8 has a longitudinal direction in the Y-axis direction with the position from the end in the + X-axis direction to the end in the −X-axis direction of the pair of fixed portions 31A and 31C (rib portions 313) as short sides. Although it may be a region, the length of the short side may be further extended in the X-axis direction at a constant ratio (for example, 20%).

特定領域8を図5に示す矩形として考えた場合は、平面視で特定領域8にネジ穴36(締結部)が配置されていることが要件となる。また特定領域8を図5−図8に示す直方体として考えた場合は、ネジ穴36が実際に特定領域8の内側に配置されていることが要件となる。 When the specific area 8 is considered as a rectangle shown in FIG. 5, it is a requirement that the screw hole 36 (fastening portion) is arranged in the specific area 8 in a plan view. Further, when the specific area 8 is considered as a rectangular parallelepiped shown in FIGS. 5 to 8, it is a requirement that the screw holes 36 are actually arranged inside the specific area 8.

図7、図8に示すように、第1天板部33と第2天板部38の間には段差部39が配置され、当該段差部39と第1天板部33の接続部37が接続している。ここで、段差部39は、ネジ穴36(締結部)と同様に特定領域8に含まれるように配置される。また、第2天板部38は第1天板部33(接続部37)よりも高くなるように配置されており、段差部39は、その主面が+X軸側に対向している。 As shown in FIGS. 7 and 8, a step portion 39 is arranged between the first top plate portion 33 and the second top plate portion 38, and the connecting portion 37 between the step portion 39 and the first top plate portion 33 is provided. You are connected. Here, the step portion 39 is arranged so as to be included in the specific region 8 like the screw hole 36 (fastening portion). Further, the second top plate portion 38 is arranged so as to be higher than the first top plate portion 33 (connection portion 37), and the main surface of the step portion 39 faces the + X axis side.

ボス部34は、少なくとも一部(図5では、開口部35A,35Bよりも−X軸側であってネジ穴36を含む領域)が特定領域8に含まれるように配置される。またボス部34は、接続部37よりも高くなるように配置されている。 The boss portion 34 is arranged so that at least a part (in FIG. 5, a region on the −X-axis side of the openings 35A and 35B and including the screw hole 36) is included in the specific region 8. Further, the boss portion 34 is arranged so as to be higher than the connecting portion 37.

これにより、図中の特定領域8において、筐体3の天板にY軸方向に延びる段差部39(折り目)が形成され、筐体3の剛性が天板に折り目がない場合よりも向上するので、筐体3で発生し得る異音を低減できる。また、特定領域8においてボス部34が配置された部分の剛性が向上し、これにより筐体3で発生し得る異音を低減できる。 As a result, in the specific region 8 in the drawing, a step portion 39 (crease) extending in the Y-axis direction is formed on the top plate of the housing 3, and the rigidity of the housing 3 is improved as compared with the case where the top plate has no crease. Therefore, it is possible to reduce the abnormal noise that may occur in the housing 3. Further, the rigidity of the portion where the boss portion 34 is arranged in the specific region 8 is improved, and thereby the abnormal noise that may occur in the housing 3 can be reduced.

なお、本実施形態では、段差部39、及びボス部34のいずれか一方を形成する構成、また両方とも形成しない構成でもよい。また、第2天板部38の高さが第1天板部33の高さよりも低くなってもよい。この場合、段差部39は、その主面が−X軸側に対向する。 In this embodiment, either one of the step portion 39 and the boss portion 34 may be formed, or neither of them may be formed. Further, the height of the second top plate portion 38 may be lower than the height of the first top plate portion 33. In this case, the main surface of the step portion 39 faces the −X axis side.

さらに、図6−図8に示すように、特定領域8であって筐体3の内側(天板の裏側)には、Y軸方向(特定領域8の長手方向に沿った方向)に延びる内部リブ391が形成されている。この内部リブ391によっても特定領域8の剛性を向上させ、異音の発生を抑制することができる。 Further, as shown in FIGS. 6-8, the inside of the specific region 8 and inside the housing 3 (the back side of the top plate) extends in the Y-axis direction (direction along the longitudinal direction of the specific region 8). Ribs 391 are formed. The internal rib 391 can also improve the rigidity of the specific region 8 and suppress the generation of abnormal noise.

[本実施形態の効果]
本実施形態の回転電機装置100によれば、回転電機(モータ)を収容するハウジング1と、ハウジング1に取り付けられるとともに回転電機(モータ)に接続された電力変換装置(インバータ2)と、電力変換装置(インバータ2)を覆うようにハウジング1に取り付けられる筐体3と、を含む回転電機装置100であって、筐体3には、電力変換装置(インバータ2)に対して部品(バスバー4P,4N、ヒューズ)の取り付け作業を行うための開口部35A,35Bが形成されるとともに、ハウジング1に筐体3を固定するための複数の固定部31と、開口部35A,35Bの周囲に配置され、開口部35A,35Bを閉止するための蓋部5を締結するための複数の締結部(ネジ穴36)と、を含み、複数の固定部31は、筐体3の一方の側壁と、一方の側壁に対向する他方の側壁に設けられるとともに互いに対向する一対の固定部31A,31Cを含み、締結部(ネジ穴36)は、平面視で筐体3において一対の固定部31A,31Cの間に挟まれる領域(特定領域8)に複数配置されている。
[Effect of this embodiment]
According to the rotary electric machine device 100 of the present embodiment, the housing 1 accommodating the rotary electric machine (motor), the power conversion device (inverter 2) attached to the housing 1 and connected to the rotary electric machine (motor), and the power conversion A rotary electric device 100 including a housing 3 attached to a housing 1 so as to cover the device (inverter 2). The housing 3 includes a component (bus bar 4P, Openings 35A and 35B for mounting the 4N (fuse) are formed, and a plurality of fixing portions 31 for fixing the housing 3 to the housing 1 and the openings 35A and 35B are arranged around the openings 35A and 35B. , A plurality of fastening portions (screw holes 36) for fastening the lid portions 5 for closing the openings 35A and 35B, and the plurality of fixing portions 31 are one side wall of the housing 3 and one side thereof. The fastening portion (screw hole 36) includes a pair of fixing portions 31A and 31C provided on the other side wall facing the side wall of the housing 3 and facing each other, and the fastening portion (screw hole 36) is between the pair of fixing portions 31A and 31C in the housing 3 in a plan view. A plurality of regions are arranged in the region (specific region 8) sandwiched between the two.

上記構成により、固定部31(固定部31A,31C)は、ハウジング1(モータ)から最初に振動が伝播する部分となるが、筐体3において平面視で一対の固定部31A,31Cに挟まれる領域(特定領域8)の剛性が締結部(ネジ穴36)により向上するので、筐体3(特に天板)で発生し得る異音を低減できる。 According to the above configuration, the fixed portion 31 (fixed portion 31A, 31C) is a portion where vibration first propagates from the housing 1 (motor), but is sandwiched between the pair of fixed portions 31A, 31C in the housing 3 in a plan view. Since the rigidity of the region (specific region 8) is improved by the fastening portion (screw hole 36), abnormal noise that may occur in the housing 3 (particularly the top plate) can be reduced.

本実施形態において、固定部31は、側壁から突出するとともにハウジング1に固定される突出部311と、側壁から突出して突出部311に接続するリブ部313と、を含む。これにより、固定部31と筐体3の側壁との間の剛性を向上させ、筐体3で発生し得る異音を低減できる。 In the present embodiment, the fixing portion 31 includes a protruding portion 311 that protrudes from the side wall and is fixed to the housing 1, and a rib portion 313 that protrudes from the side wall and connects to the protruding portion 311. As a result, the rigidity between the fixing portion 31 and the side wall of the housing 3 can be improved, and the abnormal noise that may occur in the housing 3 can be reduced.

本実施形態において、領域(特定領域8)は、一対の固定部31A,31Cを互いに結ぶ方向(Y軸方向)を長手方向とし、締結部(ネジ穴36)は、長手方向に沿って複数配列されている。これにより、固定部31A,31Cを介して伝播してくる振動が集中する領域(特定領域8)の剛性を効果的に向上させ、筐体3で発生し得る異音を低減できる。 In the present embodiment, the region (specific region 8) has a longitudinal direction in which the pair of fixing portions 31A and 31C are connected to each other (Y-axis direction), and a plurality of fastening portions (screw holes 36) are arranged along the longitudinal direction. Has been done. As a result, the rigidity of the region (specific region 8) where the vibration propagating through the fixed portions 31A and 31C is concentrated can be effectively improved, and the abnormal noise that may occur in the housing 3 can be reduced.

本実施形態において、筐体3は、開口部35A,35B及び締結部(ネジ穴36)を包含する第1天板部33と、第1天板部33と高さが異なる第2天板部38と、第1天板部33と第2天板部38とを接続する段差部39を含み、段差部39は、平面視で領域(特定領域8)の内側に配置される。これにより、領域(特定領域8)において筐体3の天板にY軸方向に延びる段差部39(折り目)が形成され、筐体3の剛性が天板に折り目がない場合よりも向上するので、筐体3で発生し得る異音を低減できる。 In the present embodiment, the housing 3 has a first top plate portion 33 including openings 35A and 35B and a fastening portion (screw hole 36), and a second top plate portion having a height different from that of the first top plate portion 33. The step portion 39 including the 38 and the step portion 39 connecting the first top plate portion 33 and the second top plate portion 38 is included, and the step portion 39 is arranged inside the region (specific region 8) in a plan view. As a result, a step portion 39 (crease) extending in the Y-axis direction is formed on the top plate of the housing 3 in the region (specific region 8), and the rigidity of the housing 3 is improved as compared with the case where the top plate has no crease. , The abnormal noise that may occur in the housing 3 can be reduced.

本実施形態において、筐体3は、開口部35A,35B及び締結部(ネジ穴36)を含むとともに筐体3の天板(第1天板部33)から突出するように配置されたボス部34を含み、ボス部34の少なくとも一部が平面視で領域(特定領域8)に含まれる。これにより、領域(特定領域8)においてボス部34が配置された部分の剛性が向上し、これにより筐体3で発生し得る異音を低減できる。 In the present embodiment, the housing 3 includes openings 35A and 35B and fastening portions (screw holes 36), and is a boss portion arranged so as to protrude from the top plate (first top plate portion 33) of the housing 3. 34 is included, and at least a part of the boss portion 34 is included in the region (specific region 8) in a plan view. As a result, the rigidity of the portion where the boss portion 34 is arranged in the region (specific region 8) is improved, and thereby the abnormal noise that may occur in the housing 3 can be reduced.

1 ハウジング
2 インバータ
3 筐体
31 固定部
31A 固定部
31C 固定部
36 ネジ穴
4P バスバー
4N バスバー
5 蓋部
8 特定領域
1 Housing 2 Inverter 3 Housing 31 Fixed part 31A Fixed part 31C Fixed part 36 Screw hole 4P Bus bar 4N Bus bar 5 Lid part 8 Specific area

Claims (5)

回転電機を収容するハウジングと、
前記ハウジングに取り付けられるとともに前記回転電機に接続された電力変換装置と、
前記電力変換装置を覆うように前記ハウジングに取り付けられる筐体と、を含む回転電機装置であって、
前記筐体には、
前記電力変換装置に対して部品の取り付け作業を行うための開口部が形成されるとともに、
前記ハウジングに前記筐体を固定するための複数の固定部と、
前記開口部の周囲に配置され、前記開口部を閉止するための蓋部を締結するための複数の締結部と、を含み、
複数の前記固定部は、
前記筐体の一方の側壁と、前記一方の側壁に対向する他方の側壁に設けられるとともに互いに対向する一対の前記固定部を含み、
前記締結部は、
平面視で前記筐体において前記一対の前記固定部の間に挟まれる領域に複数配置されている
回転電機装置。
A housing that houses a rotary electric machine and
A power conversion device attached to the housing and connected to the rotary electric machine,
A rotary electric device including a housing attached to the housing so as to cover the power conversion device.
The housing has
An opening for attaching parts to the power conversion device is formed, and at the same time, an opening is formed.
A plurality of fixing portions for fixing the housing to the housing,
A plurality of fastening portions, which are arranged around the opening and for fastening a lid portion for closing the opening, and include a plurality of fastening portions.
The plurality of the fixing portions are
The housing includes one side wall and a pair of fixing portions provided on the other side wall facing the one side wall and facing each other.
The fastening part is
A plurality of rotary electric devices arranged in a region sandwiched between the pair of fixed portions in the housing in a plan view.
前記固定部は、前記側壁から突出するとともに前記ハウジングに固定される突出部と、前記側壁から突出して前記突出部に接続するリブ部と、を含む請求項1に記載の回転電機装置。 The rotary electric device according to claim 1, wherein the fixing portion includes a protruding portion that protrudes from the side wall and is fixed to the housing, and a rib portion that protrudes from the side wall and connects to the protruding portion. 前記領域は、前記一対の前記固定部を互いに結ぶ方向を長手方向とし、
前記締結部は、前記長手方向に沿って複数配列されている請求項1または2に記載の回転電機装置。
In the region, the direction connecting the pair of the fixing portions to each other is the longitudinal direction.
The rotary electric device according to claim 1 or 2, wherein a plurality of fastening portions are arranged along the longitudinal direction.
前記筐体は、前記開口部及び前記締結部を包含する第1天板部と、前記第1天板部と高さが異なる第2天板部と、前記第1天板部と前記第2天板部とを接続する段差部を含み、前記段差部は、平面視で前記領域の内側に配置される請求項1乃至3のいずれか1項に記載の回転電機装置。 The housing includes a first top plate portion including the opening and the fastening portion, a second top plate portion having a height different from that of the first top plate portion, and the first top plate portion and the second top plate portion. The rotary electric device according to any one of claims 1 to 3, which includes a step portion connecting to a top plate portion, and the step portion is arranged inside the region in a plan view. 前記筐体は、前記開口部及び前記締結部を含むとともに前記筐体の天板から突出するように配置されたボス部を含み、
前記ボス部の少なくとも一部が平面視で前記領域に含まれる請求項1乃至4のいずれか1項に記載の回転電機装置。
The housing includes the opening and the fastening portion, and also includes a boss portion arranged so as to protrude from the top plate of the housing.
The rotary electric device according to any one of claims 1 to 4, wherein at least a part of the boss portion is included in the region in a plan view.
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