JP2022120354A - Electric connection terminal - Google Patents

Abstract

To provide an electric connection terminal capable of suppressing an increase in contact resistance.SOLUTION: An electric connection terminal 40 includes a base portion 50, two support portions 60 branching and extending from the base portion 50, and two holding portions 70 extending from the tips of the two support portions 60, respectively. The holding portion 70 includes a first recess 80 recessed from a first main surface toward a second main surface 42, and a second recess 90 recessed from the second main surface 42 toward the first main surface. In plan view in the plate thickness direction, the second recess 90 is larger than the first recess 80, and the first recess 80 is accommodated in the second recess 90.SELECTED DRAWING: Figure 3

Description

本発明は、電気接続端子に関する。 The present invention relates to an electrical connection terminal.

例えば、特許文献１には、モータなどの電装品の給電端子と電気的に接続される電気接続端子が記載されている。図１５に示すように、電気接続端子２００は、いわゆるフォーク型端子であり、先端が二股に分岐した２つの挟持片２１０を有する。電気接続端子２００と給電端子３００とを電気的に接続する場合には、給電端子３００が、２つの挟持片２１０の間隔を押し広げつつ２つの挟持片２１０の間に挿入される。 For example, Patent Literature 1 describes an electrical connection terminal that is electrically connected to a power supply terminal of an electrical component such as a motor. As shown in FIG. 15, the electrical connection terminal 200 is a so-called fork-type terminal, and has two clamping pieces 210 with bifurcated ends. When electrically connecting the electrical connection terminal 200 and the power supply terminal 300 , the power supply terminal 300 is inserted between the two clamping pieces 210 while expanding the distance between the two clamping pieces 210 .

特開２０１４－１０７１５４号公報JP 2014-107154 A

上記のような電気接続端子２００は、ダイ上に配置した導電板をパンチでせん断加工することで製造される。このため、図１６に示すように、電気接続端子２００の側面には、せん断方向に沿うせん断面２１１と、せん断面２１１を延長した面から退避する破断面２１２と、が生成される。こうして、上記のような電気接続端子２００において、２つの挟持片２１０の間隔は、電気接続端子２００の板厚方向に対して一定になりにくい。その結果、上記のような電気接続端子２００は、給電端子３００が接続されるときの接触抵抗が増大するおそれがある。 The electrical connection terminal 200 as described above is manufactured by shearing a conductive plate placed on a die with a punch. Therefore, as shown in FIG. 16, the side surface of the electrical connection terminal 200 is formed with a sheared surface 211 along the shearing direction and a fractured surface 212 retreating from the extended surface of the sheared surface 211 . Thus, in the electrical connection terminal 200 as described above, it is difficult for the interval between the two clamping pieces 210 to be constant in the plate thickness direction of the electrical connection terminal 200 . As a result, the electrical connection terminal 200 as described above may have an increased contact resistance when the power supply terminal 300 is connected.

本発明の目的は、接触抵抗の増大を抑制できる電気接続端子を提供することである。 An object of the present invention is to provide an electrical connection terminal capable of suppressing an increase in contact resistance.

以下、上記課題を解決するための手段及びその作用効果について記載する。
上記課題を解決する電気接続端子は、板厚方向と直交する２つの主面を接続する側面にせん断面及び破断面を有する電気接続端子であって、基部と、前記基部から分岐して延びる２つのアームと、を備え、２つの前記主面のうち、前記せん断面に近い主面を第１主面とし、前記破断面に近い主面を第２主面としたとき、前記アームは、前記第１主面から前記第２主面に向かって凹む第１凹部と、前記第２主面から前記第１主面に向かって凹む第２凹部と、を有し、前記板厚方向における平面視において、前記第２凹部は前記第１凹部よりも大きく、前記第１凹部は前記第２凹部に収まっている。 Means for solving the above problems and their effects will be described below.
An electrical connection terminal for solving the above problems is an electrical connection terminal having a sheared surface and a fractured surface on a side surface connecting two main surfaces perpendicular to the plate thickness direction, and comprising a base portion and two branched portions extending from the base portion. and an arm, wherein, of the two principal surfaces, the principal surface near the sheared surface is defined as a first principal surface, and the principal surface near the fractured surface is defined as a second principal surface. A first recess recessed from the first principal surface toward the second principal surface and a second recess recessed from the second principal surface toward the first principal surface, and are viewed in plan in the plate thickness direction , the second recess is larger than the first recess, and the first recess is accommodated in the second recess.

電気接続端子をせん断加工で製造する場合には、側面にせん断面及び破断面が生成される点で、２つのアームの間隔が板厚方向に対して一定になりにくい。そこで、パンチなどの工具をアームに押し付けることで上記構成のような第１凹部及び第２凹部を設けると、アームの破断面が当該アームのせん断面よりも大きく変位する。その結果、板厚方向に対する２つのアームの間隔の変化が小さくなる。したがって、電気接続端子は、電装品の外部端子と接続されたとき、外部端子との接触面積が小さくなることを抑制できる。こうして、電気接続端子は、接触抵抗の増大を抑制できる。 When the electrical connection terminal is manufactured by shearing, it is difficult to keep the distance between the two arms constant in the plate thickness direction because sheared surfaces and fractured surfaces are generated on the side surfaces. Therefore, if a tool such as a punch is pressed against the arm to provide the first recess and the second recess as described above, the fractured surface of the arm displaces more than the sheared surface of the arm. As a result, the change in the distance between the two arms in the plate thickness direction is reduced. Therefore, when the electrical connection terminal is connected to the external terminal of the electrical component, it is possible to prevent the contact area with the external terminal from becoming smaller. Thus, the electrical connection terminal can suppress an increase in contact resistance.

上記電気接続端子において、前記第２凹部の前記板厚方向と直交する面積は、前記第２凹部の底面から前記第２凹部の開口に向かうにつれて大きくなることが好ましい。
一般的に破断面は板厚方向に対して傾くため、２つのアームの破断面の間隔は、第２主面に向かうにつれて次第に大きくなりやすい。このため、２つのアームの破断面の間隔を一定とするためには、アームの第２主面にパンチなどの工具を押し付けることで第２凹部を設ける際に、破断面の第２主面に近い部分ほど大きく変位させる必要がある。この点、上記構成の電気接続端子において、第２凹部の板厚方向と直交する面積は、第２凹部の底面から第２凹部の開口に向かうにつれて大きくなる。このため、電気接続端子は、２つのアームの破断面の間隔をより一定にしやすくなる。 In the above electrical connection terminal, it is preferable that the area of the second recess perpendicular to the plate thickness direction increases from the bottom surface of the second recess toward the opening of the second recess.
Since the fractured surfaces are generally inclined with respect to the plate thickness direction, the gap between the fractured surfaces of the two arms tends to gradually increase toward the second main surface. Therefore, in order to keep the distance between the fractured surfaces of the two arms constant, when forming the second recess by pressing a tool such as a punch against the second main surface of the arm, It is necessary to displace larger portions closer to each other. In this regard, in the electrical connection terminal configured as described above, the area of the second recess perpendicular to the plate thickness direction increases from the bottom surface of the second recess toward the opening of the second recess. For this reason, the electrical connection terminal can more easily keep the distance between the fractured surfaces of the two arms constant.

上記電気接続端子において、前記アームの先端部は、前記第１凹部及び前記第２凹部を有し、前記アームの基端部は、前記第１主面から前記第２主面に向かって凹む第３凹部と、前記第２主面から前記第１主面に向かって凹む第４凹部と、を有することが好ましい。 In the electrical connection terminal described above, the distal end of the arm has the first recess and the second recess, and the base end of the arm is recessed from the first main surface toward the second main surface. It is preferable to have three recesses and a fourth recess recessed from the second main surface toward the first main surface.

２つのアームの間に電装品の外部端子が挿入される際、アームには曲げ応力が発生する。この点、上記構成の電気接続端子は、アームの長手方向と直交する断面形状が矩形でなくなる点で、アームの断面二次モーメントが大きくなる。こうして、電気接続端子は、アームの剛性を高めることができる。 When an external terminal of an electrical component is inserted between the two arms, bending stress is generated in the arms. In this respect, the electrical connection terminal having the above configuration has a larger cross-sectional moment of inertia of the arm because the cross-sectional shape perpendicular to the longitudinal direction of the arm is not rectangular. Thus, the electrical connection terminal can increase the rigidity of the arm.

上記電気接続端子において、前記第１凹部は、前記第１主面において、前記アームの先端部から基端部にかけて設けられ、前記第２凹部は、前記第２主面において、前記アームの先端部から基端部にかけて設けられることが好ましい。 In the electrical connection terminal, the first recess is provided on the first main surface from the distal end portion to the base end portion of the arm, and the second recess is provided on the second main surface from the distal end portion of the arm. It is preferably provided from the to the proximal end.

上記構成の電気接続端子は、第１凹部及び第２凹部がアームの先端部から基端部にかけて設けられる点でアームの剛性を高めることができる。また、電気接続端子は、アームの先端部に凹部を設け、当該凹部と独立した凹部をアームの基端部に設ける場合よりも、凹部の形成数を少なくできる。 The electrical connection terminal configured as described above can increase the rigidity of the arm in that the first concave portion and the second concave portion are provided from the distal end portion to the proximal end portion of the arm. In addition, the number of recesses formed in the electrical connection terminal can be reduced compared to the case where the recess is provided at the distal end of the arm and the recess independent of the recess is provided at the base end of the arm.

上記課題を解決する電気接続端子は、板厚方向と直交する２つの主面を接続する側面にせん断面及び破断面を有する電気接続端子であって、基部と、前記基部から分岐して延びる２つのアームと、を備え、２つの前記主面のうち、前記せん断面に近い主面を第１主面とし、前記破断面に近い主面を第２主面としたとき、前記第１主面は平坦面であり、前記アームは、前記第２主面に前記第１主面に向かって凹む凹部を有する。 An electrical connection terminal for solving the above problems is an electrical connection terminal having a sheared surface and a fractured surface on a side surface connecting two main surfaces perpendicular to the plate thickness direction, and comprising a base portion and two branched portions extending from the base portion. and two arms, wherein, of the two principal surfaces, the principal surface near the sheared surface is defined as a first principal surface, and the principal surface near the fractured surface is defined as a second principal surface, the first principal surface is a flat surface, and the arm has a recess in the second main surface that is recessed toward the first main surface.

パンチなどの工具をアームの第２主面に押し付けることで上記構成のような凹部を設けると、アームの破断面がせん断面よりも大きく変位する。その結果、板厚方向に対する２つのアームの間隔の変化が小さくなる。したがって、電気接続端子は、電装品の外部端子と接続されたとき、外部端子との接触面積が小さくなることを抑制できる。こうして、電気接続端子は、接触抵抗の増大を抑制できる。 If a tool such as a punch is pressed against the second main surface of the arm to form the concave portion as described above, the fractured surface of the arm is displaced more than the sheared surface. As a result, the change in the distance between the two arms in the plate thickness direction is reduced. Therefore, when the electrical connection terminal is connected to the external terminal of the electrical component, it is possible to prevent the contact area with the external terminal from becoming smaller. Thus, the electrical connection terminal can suppress an increase in contact resistance.

電気接続端子は、接触抵抗の増大を抑制できる。 The electrical connection terminal can suppress an increase in contact resistance.

第１実施形態の電気接続端子を備えるアクチュエータの部分断面図。FIG. 2 is a partial cross-sectional view of an actuator provided with electrical connection terminals according to the first embodiment; 第１実施形態の電気接続端子の平面図。FIG. 2 is a plan view of the electrical connection terminal of the first embodiment; 第１実施形態の電気接続端子の底面図。The bottom view of the electrical connection terminal of 1st Embodiment. 図２の４－４線矢視断面図。4-4 line arrow sectional view of FIG. 第１実施形態の電気接続端子の中間体の平面図。A plan view of the intermediate body of the electrical connection terminal of the first embodiment. 第１実施形態において、せん断工程中の中間体の断面図。Sectional drawing of the intermediate body in a shearing process in 1st Embodiment. 第１実施形態において、圧縮工程中の中間体の断面図。Sectional drawing of the intermediate body during a compression process in 1st Embodiment. 第２実施形態の電気接続端子の平面図。The top view of the electrical connection terminal of 2nd Embodiment. 図８の９－９線矢視断面図。9-9 line arrow sectional view of FIG. 第３実施形態の電気接続端子の平面図。The top view of the electrical connection terminal of 3rd Embodiment. 図１０の１１－１１線矢視断面図。11-11 line arrow cross-sectional view of FIG. 第４実施形態の電気接続端子の平面図。The top view of the electrical connection terminal of 4th Embodiment. 図１２の１３－１３線矢視断面図。FIG. 13 is a cross-sectional view taken along line 13-13 of FIG. 変更例に係る電気接続端子の平面図。The top view of the electrical connection terminal which concerns on the example of a change. 比較例の電気接続端子と外部端子とを示す模式図。FIG. 4 is a schematic diagram showing an electrical connection terminal and an external terminal of a comparative example; 図１５の１６－１６線矢視断面図。FIG. 15 is a cross-sectional view taken along the line 16-16.

（第１実施形態）
以下、電気接続端子の第１実施形態について、図面を参照しつつ説明する。
図１に示すように、アクチュエータ１０は、電装品の一例としてのモータ２０と、モータ２０を収容するハウジング３０と、モータ２０と電気的に接続される２つの電気接続端子４０と、を備えている。また、図１では図示を省略するが、アクチュエータ１０は、モータ２０の回転速度を減速する減速機構などを備えている。アクチュエータ１０は、例えば、窓、サンルーフ、パワーシート及びドアクローザなどの駆動対象を駆動する車両用のアクチュエータである。 (First embodiment)
A first embodiment of an electrical connection terminal will be described below with reference to the drawings.
As shown in FIG. 1, the actuator 10 includes a motor 20 as an example of electrical equipment, a housing 30 that houses the motor 20, and two electrical connection terminals 40 that are electrically connected to the motor 20. there is Although not shown in FIG. 1, the actuator 10 includes a deceleration mechanism for decelerating the rotational speed of the motor 20 and the like. The actuator 10 is, for example, a vehicle actuator that drives objects to be driven, such as windows, a sunroof, a power seat, and a door closer.

図１に示すように、モータ２０は、２つの外部端子２１を有する。外部端子２１は、板厚が一定の矩形板状をなしている。２つの外部端子２１は、間隔をあけた状態で並行に延びている。モータ２０は、例えば、ねじ及びボルトなどの締結部材を介してハウジング３０に固定される。モータ２０がハウジング３０に固定される状態では、モータ２０の２つの外部端子２１が２つの電気接続端子４０にそれぞれ接続される。 As shown in FIG. 1, motor 20 has two external terminals 21 . The external terminal 21 has a rectangular plate shape with a constant plate thickness. The two external terminals 21 extend in parallel while being spaced apart. The motor 20 is fixed to the housing 30 via fastening members such as screws and bolts. When the motor 20 is fixed to the housing 30, the two external terminals 21 of the motor 20 are connected to the two electrical connection terminals 40, respectively.

以下、電気接続端子４０について説明する。
図２に示すように、電気接続端子４０は、板状をなすフォーク型端子である。電気接続端子４０は、板厚方向における平面視（以下、単に「平面視」ともいう。）において、線対称な形状をなしている。電気接続端子４０の材質は、銅及び真鍮などの導電性の高い金属であることが好ましい。 The electrical connection terminal 40 will be described below.
As shown in FIG. 2, the electrical connection terminal 40 is a plate-like fork terminal. The electrical connection terminal 40 has a line-symmetrical shape in plan view in the plate thickness direction (hereinafter also simply referred to as “plan view”). The material of the electrical connection terminal 40 is preferably a highly conductive metal such as copper or brass.

図２～図４に示すように、電気接続端子４０は、基部５０と、基部５０から分岐して延びる２つの支持部６０と、２つの支持部６０の先端からそれぞれ延びる２つの挟持部７０と、を有している。本実施形態では、支持部６０及び挟持部７０により「アーム」の一例が構成されている。言い換えれば、「アーム」は、支持部６０及び挟持部７０を有している。 As shown in FIGS. 2 to 4, the electrical connection terminal 40 includes a base portion 50, two supporting portions 60 branching from the base portion 50 and extending from the two supporting portions 60, and two holding portions 70 extending from the ends of the two supporting portions 60, respectively. ,have. In this embodiment, an example of an “arm” is configured by the support portion 60 and the holding portion 70 . In other words, the “arm” has a support portion 60 and a clamping portion 70 .

以降の説明では、電気接続端子４０において、板厚方向と直交する２つの面を「第１主面４１及び第２主面４２」といい、第１主面４１及び第２主面４２を接続する面を「側面４３」という。また、支持部６０の延びる方向及び板厚方向の両方向と直交する方向を幅方向ともいい、幅方向における中央側を内側ともいい、幅方向における両側を外側ともいう。 In the following description, two surfaces of the electrical connection terminal 40 that are orthogonal to the plate thickness direction are referred to as "first main surface 41 and second main surface 42", and the first main surface 41 and second main surface 42 are connected to each other. The surface to which it does is called "the side surface 43." A direction orthogonal to both the extending direction and the plate thickness direction of the support portion 60 is also referred to as the width direction, the center side in the width direction is referred to as the inner side, and both sides in the width direction are referred to as the outer side.

基部５０は、図１に図示しない部分において、ハウジング３０内に配策される導線に接続されたり、他の端子に接続されたりする。
図２及び図３に示すように、支持部６０は、直線状をなす外側面６１と、円弧状をなす内側面６２と、を有している。一方の支持部６０の内側面６２は、同支持部６０の外側面６１に向けて凸となっている。このため、平面視において、２つの支持部６０の間にできる空間は、楕円状をなしている。２つの支持部６０の間隔、詳しくは、２つの支持部６０の内側面６２の間隔は、外部端子２１の厚さ以上となっている。 The base 50 is connected to conductors routed inside the housing 30 or to other terminals at a portion not shown in FIG.
As shown in FIGS. 2 and 3, the support portion 60 has a linear outer surface 61 and an arcuate inner surface 62 . An inner side surface 62 of one support portion 60 is convex toward an outer side surface 61 of the same support portion 60 . Therefore, in plan view, the space formed between the two support portions 60 has an elliptical shape. The distance between the two support portions 60 , more specifically, the distance between the inner side surfaces 62 of the two support portions 60 is equal to or greater than the thickness of the external terminal 21 .

挟持部７０は、支持部６０の外側面６１に沿って直線状に延びる第１外側面７１と、第１外側面７１から傾いた方向に延びる第２外側面７２と、円弧状をなす内側面７３と、を有している。また、挟持部７０は、第１主面４１から第２主面４２に向かって凹む第１凹部８０と、第２主面４２から第１主面４１に向かって凹む第２凹部９０と、を有している。 The holding portion 70 has a first outer surface 71 extending linearly along the outer surface 61 of the support portion 60, a second outer surface 72 extending in an inclined direction from the first outer surface 71, and an arc-shaped inner surface. 73 and . Also, the holding portion 70 has a first recess 80 recessed from the first main surface 41 toward the second main surface 42 and a second recess 90 recessed from the second main surface 42 toward the first main surface 41 . have.

第１外側面７１は、第２外側面７２と支持部６０の外側面６１とを接続し、内側面７３は、第２外側面７２と支持部６０の内側面６２とを接続している。平面視において、一方の挟持部７０の内側面７３は、他方の挟持部７０に向かって凸となっている。２つの挟持部７０の間隔、詳しくは、２つの挟持部７０の内側面７３の間隔は、２つの支持部６０の間隔よりも短くなっている。また、２つの挟持部７０の間隔は、外部端子２１の厚さ未満となっている。 The first outer surface 71 connects the second outer surface 72 and the outer surface 61 of the support portion 60 , and the inner surface 73 connects the second outer surface 72 and the inner surface 62 of the support portion 60 . In plan view, an inner side surface 73 of one holding portion 70 is convex toward the other holding portion 70 . The interval between the two holding portions 70 , more specifically, the interval between the inner side surfaces 73 of the two holding portions 70 is shorter than the interval between the two support portions 60 . Also, the distance between the two holding portions 70 is less than the thickness of the external terminal 21 .

図２～図４に示すように、第１凹部８０は、第１凹部８０の底面である第１底面８１と、第１凹部８０における外側の面である第１外壁面８２と、第１凹部８０における内側の面である第１内壁面８３と、を含んでいる。一方、第２凹部９０は、第２凹部９０の底面である第２底面９１と、第２凹部９０における外側の面である第２外壁面９２と、第２凹部９０における内側の面である第２内壁面９３と、を含んでいる。 As shown in FIGS. 2 to 4, the first recess 80 includes a first bottom surface 81 that is the bottom surface of the first recess 80, a first outer wall surface 82 that is the outer surface of the first recess 80, and a first recess and a first inner wall surface 83 which is the inner surface at 80 . On the other hand, the second recessed portion 90 includes a second bottom surface 91 that is the bottom surface of the second recessed portion 90 , a second outer wall surface 92 that is the outer surface of the second recessed portion 90 , and a second wall surface that is the inner surface of the second recessed portion 90 . 2 inner wall surfaces 93 and .

第１底面８１は、板厚方向と直交する平面であり、第１外壁面８２及び第１内壁面８３は、板厚方向に沿う面である。平面視において、第１底面８１は略半円状をなしている。このため、平面視において、第１外壁面８２は直線状をなし、第１内壁面８３は円弧状をなしている。第１内壁面８３の曲率半径は、挟持部７０の内側面７３の曲率半径よりも小さくなっている。第２底面９１は、板厚方向と直交する平面であり、第２外壁面９２及び第２内壁面９３は、板厚方向に沿う面である。平面視において、第２底面９１は略半円状をなしている。このため、平面視において、第２外壁面９２は直線状をなし、第２内壁面９３は円弧状をなしている。 The first bottom surface 81 is a plane orthogonal to the thickness direction, and the first outer wall surface 82 and the first inner wall surface 83 are surfaces along the thickness direction. In plan view, the first bottom surface 81 has a substantially semicircular shape. Therefore, in plan view, the first outer wall surface 82 has a linear shape, and the first inner wall surface 83 has an arc shape. The radius of curvature of the first inner wall surface 83 is smaller than the radius of curvature of the inner side surface 73 of the holding portion 70 . The second bottom surface 91 is a plane orthogonal to the thickness direction, and the second outer wall surface 92 and the second inner wall surface 93 are surfaces along the thickness direction. In plan view, the second bottom surface 91 has a substantially semicircular shape. Therefore, in plan view, the second outer wall surface 92 has a linear shape, and the second inner wall surface 93 has an arc shape.

図４に示すように、第１主面４１から第１底面８１までの距離、すなわち、第１凹部８０の深さは、第２主面４２から第２底面９１までの距離、すなわち、第２凹部９０の深さと略等しくなっている。図２及び図３に示すように、平面視において、第１外壁面８２及び第２外壁面９２は重なって位置し、第１内壁面８３は第２内壁面９３よりも一回り小さくなっている。このため、板厚方向に第１凹部８０及び第２凹部９０を重ねると、第１凹部８０は第２凹部９０に収まり、第２凹部９０は第１凹部８０よりも大きくなっているといえる。また、挟持部７０の内側面７３から第１凹部８０の第１内壁面８３までの距離は、挟持部７０の内側面７３から第２凹部９０の第２内壁面９３までの距離よりも長くなっている。言い換えれば、第２内壁面９３は、第１内壁面８３よりも挟持部７０の内側面７３に寄っている。 As shown in FIG. 4, the distance from the first main surface 41 to the first bottom surface 81, that is, the depth of the first recess 80, is the distance from the second main surface 42 to the second bottom surface 91, that is, the second depth. It is approximately equal to the depth of the recess 90 . As shown in FIGS. 2 and 3, in plan view, the first outer wall surface 82 and the second outer wall surface 92 overlap each other, and the first inner wall surface 83 is one size smaller than the second inner wall surface 93. . Therefore, when the first recessed portion 80 and the second recessed portion 90 overlap in the plate thickness direction, it can be said that the first recessed portion 80 fits in the second recessed portion 90 and the second recessed portion 90 is larger than the first recessed portion 80 . Further, the distance from the inner side surface 73 of the holding portion 70 to the first inner wall surface 83 of the first recess 80 is longer than the distance from the inner side surface 73 of the holding portion 70 to the second inner wall surface 93 of the second recess 90. ing. In other words, the second inner wall surface 93 is closer to the inner surface 73 of the holding portion 70 than the first inner wall surface 83 is.

第１実施形態において、挟持部７０が第１凹部８０及び第２凹部９０を有する点で、第１凹部８０及び第２凹部９０は「アーム」の先端部に設けられているといえる。
以上説明した電気接続端子４０に外部端子２１が接続される場合には、外部端子２１が電気接続端子４０の２つの挟持部７０の間に挿入される。このとき、２つの挟持部７０の間隔が外部端子２１の厚さ未満であることから、２つの挟持部７０は外部端子２１により押し広げられる。そして、外部端子２１は、電気接続端子４０の２つの挟持部７０の内側面７３に接触する。 In the first embodiment, since the clamping part 70 has the first recess 80 and the second recess 90, it can be said that the first recess 80 and the second recess 90 are provided at the tip of the "arm".
When the external terminal 21 is connected to the electrical connection terminal 40 described above, the external terminal 21 is inserted between the two holding portions 70 of the electrical connection terminal 40 . At this time, since the distance between the two holding portions 70 is less than the thickness of the external terminal 21 , the two holding portions 70 are pushed apart by the external terminal 21 . The external terminal 21 contacts the inner side surfaces 73 of the two clamping portions 70 of the electrical connection terminal 40 .

以下、図５～図７を参照して、電気接続端子４０の製造方法について説明する。なお、図６及び図７は、説明理解の容易のために一部の部材構成を誇大に図示している。
電気接続端子４０の製造方法は、せん断工程と、圧縮工程と、を備える。せん断工程及び圧縮工程は、ともにプレス加工により実現される工程である。 A method of manufacturing the electrical connection terminal 40 will be described below with reference to FIGS. 6 and 7 exaggerately illustrate a part of the member configuration for easy understanding of the explanation.
The method of manufacturing the electrical connection terminal 40 includes a shearing process and a compressing process. Both the shearing process and the compression process are processes realized by press working.

図５及び図６に示すように、せん断工程は、ダイＤ１上に載置した金属板に対してパンチＰ１を相対的に移動させることにより、電気接続端子４０の中間体１００を生成する工程である。パンチＰ１の移動方向は、金属板の板厚方向である。せん断工程で用いられるダイＤ１及びパンチＰ１は、中間体１００の外形に応じた形状をなしている。また、せん断工程では、第１主面４１がパンチＰ１に押される面となり、第２主面４２がダイＤ１に載置される面となる。 As shown in FIGS. 5 and 6, the shearing step is a step of producing an intermediate body 100 of the electrical connection terminal 40 by relatively moving the punch P1 with respect to the metal plate placed on the die D1. be. The moving direction of the punch P1 is the plate thickness direction of the metal plate. The die D1 and punch P1 used in the shearing step have shapes corresponding to the outer shape of the preform 100 . Further, in the shearing step, the first principal surface 41 is the surface to be pushed by the punch P1, and the second principal surface 42 is the surface to be placed on the die D1.

図５に示すように、中間体１００は、電気接続端子４０と略同様の形状をなしている。ただし、中間体１００は、電気接続端子４０と異なり、２つの挟持部７０の第１主面４１及び第２主面４２に第１凹部８０及び第２凹部９０がそれぞれ設けられていない。また、中間体１００は、電気接続端子４０と比較して、２つの挟持部７０の間隔が広くなっている。 As shown in FIG. 5 , the intermediate body 100 has substantially the same shape as the electrical connection terminal 40 . However, unlike the electrical connection terminal 40, the intermediate body 100 is not provided with the first recess 80 and the second recess 90 on the first main surface 41 and the second main surface 42 of the two clamping portions 70, respectively. Also, in the intermediate body 100 , the distance between the two clamping parts 70 is wider than in the electrical connection terminal 40 .

図６に示すように、中間体１００をせん断加工することでできる側面４３には、パンチＰ１の移動方向に沿って、丸みを帯びたダレ４３１と、平滑なせん断面４３２と、凹凸のできた破断面４３３と、突起状のバリ４３４と、が生成される。 As shown in FIG. 6, the side surface 43 formed by shearing the intermediate body 100 has a rounded droop 431, a smooth sheared surface 432, and an uneven fracture surface along the moving direction of the punch P1. A cross section 433 and a protruding burr 434 are produced.

板厚方向において、ダレ４３１とせん断面４３２とは、第１主面４１の近くに生成され、破断面４３３とバリ４３４とは、第２主面４２の近くに生成される。言い換えれば、第１主面４１は、板厚方向においてせん断面４３２に近い面であってダレ４３１に接続する面であるといえ、第２主面４２は、板厚方向において破断面４３３に近い面であって、バリ４３４に接続する面であるといえる。 In the plate thickness direction, the sag 431 and the sheared surface 432 are generated near the first principal surface 41 , and the fractured surface 433 and the burr 434 are generated near the second principal surface 42 . In other words, the first main surface 41 can be said to be a surface that is close to the sheared surface 432 in the plate thickness direction and is connected to the sag 431, and the second main surface 42 is close to the fracture surface 433 in the plate thickness direction. It can be said that it is a surface that is connected to the burr 434 .

せん断面４３２は、パンチＰ１により金属板がせん断されてできる面であり、破断面４３３は、金属板が破断されてできる面である。このため、せん断面４３２は、板厚方向に沿った比較的滑らかな面となり、破断面４３３は、板厚方向に対して傾いた比較的粗い面となる。破断面４３３は、第１主面４１から第２主面４２に向かうにつれて、せん断面４３２を第２主面４２に向けて延長した面から退避するように傾いている。 A sheared surface 432 is a surface formed by shearing the metal plate by the punch P1, and a fracture surface 433 is a surface formed by breaking the metal plate. Therefore, the sheared surface 432 becomes a relatively smooth surface along the plate thickness direction, and the fractured surface 433 becomes a relatively rough surface inclined with respect to the plate thickness direction. The fractured surface 433 is inclined so as to retreat from the surface extending the sheared surface 432 toward the second main surface 42 from the first main surface 41 toward the second main surface 42 .

したがって、中間体１００の２つの挟持部７０の間隔は、板厚方向において一定でない。詳しくは、中間体１００の２つの挟持部７０において、２つの破断面４３３の間隔は、２つのせん断面４３２の間隔よりも広くなる。さらに、中間体１００の２つの挟持部７０において、２つの破断面４３３の間隔は、第２主面４２に近付くにつれて次第に広くなる。 Therefore, the interval between the two holding portions 70 of the intermediate body 100 is not constant in the plate thickness direction. Specifically, in the two clamping portions 70 of the intermediate body 100 , the interval between the two fractured surfaces 433 is wider than the interval between the two sheared surfaces 432 . Furthermore, in the two clamping portions 70 of the intermediate body 100 , the interval between the two fractured surfaces 433 gradually widens as it approaches the second main surface 42 .

圧縮工程は、せん断工程の後工程であって、せん断工程と別に実施される工程である。図７に示すように、圧縮工程は、ダイＤ２上に載置した中間体１００に対してパンチＰ２を相対移動させることにより、電気接続端子４０を生成する工程である。圧縮工程におけるパンチＰ２の移動方向は、せん断工程と同じく、中間体１００の板厚方向である。圧縮工程で用いられるパンチＰ２は、第１主面４１の第１凹部８０に対応する凸部を有し、圧縮工程で用いられるダイＤ２は、第２主面４２の第２凹部９０に対応する形状をなしている。圧縮工程では、第１主面４１がパンチＰ２に押される面となり、第２主面４２がダイＤ２に載置される面となる。 The compression process is a process after the shearing process and is a process performed separately from the shearing process. As shown in FIG. 7, the compression step is a step of producing the electrical connection terminal 40 by relatively moving the punch P2 with respect to the intermediate 100 placed on the die D2. The moving direction of the punch P2 in the compression process is the plate thickness direction of the preform 100, as in the shearing process. The punch P2 used in the compression step has a convex portion corresponding to the first concave portion 80 of the first main surface 41, and the die D2 used in the compression step corresponds to the second concave portion 90 of the second main surface 42. It has a shape. In the compression step, the first principal surface 41 is the surface that is pressed by the punch P2, and the second principal surface 42 is the surface that is placed on the die D2.

図７に示すように、圧縮工程を実施すると、挟持部７０の第１主面４１に第１凹部８０が形成され、挟持部７０の第２主面４２に第２凹部９０が形成される。このとき、挟持部７０は、ダイＤ２とパンチＰ２とによって板厚方向と直交する方向に押し広げられる。このため、２つの挟持部７０は、内側面７３が互いに接近する方向に変位する。言い換えれば、２つの挟持部７０の内側面７３において、２つのせん断面４３２が互いに接近する方向に変位し、２つの破断面４３３が互いに接近する方向に変位する。このとき、２つの挟持部７０は塑性変形するため、パンチＰ２及びダイＤ２による２つの挟持部７０に対する荷重を取り除いても２つの挟持部７０は変形したままとなる。その結果、圧縮工程を実施する前後で、２つの挟持部７０の間隔が狭くなる。 As shown in FIG. 7 , when the compression step is performed, the first recess 80 is formed on the first main surface 41 of the holding portion 70 and the second recess 90 is formed on the second main surface 42 of the holding portion 70 . At this time, the holding portion 70 is spread in a direction perpendicular to the plate thickness direction by the die D2 and the punch P2. Therefore, the two holding portions 70 are displaced in a direction in which the inner side surfaces 73 approach each other. In other words, on the inner side surfaces 73 of the two clamping portions 70, the two sheared surfaces 432 are displaced toward each other, and the two fractured surfaces 433 are displaced toward each other. At this time, since the two holding portions 70 are plastically deformed, the two holding portions 70 remain deformed even if the load applied to the two holding portions 70 by the punch P2 and the die D2 is removed. As a result, the interval between the two holding portions 70 is narrowed before and after the compression step is performed.

さらに、圧縮工程において、第２主面４２に形成される第２凹部９０は、第１主面４１に形成される第１凹部８０よりも大きい。このため、２つの挟持部７０の内側面７３において、破断面４３３の変位量は、せん断面４３２の変位量よりも大きくなる。その結果、２つの挟持部７０の間隔は、板厚方向において一定になりやすい。詳しくは、２つの挟持部７０の内側面７３において、２つの破断面４３３の間隔及び２つのせん断面４３２の間隔は略一定となりやすい。なお、第１凹部８０及び第２凹部９０の大きさの差は、圧縮工程の実施に伴い、２つの挟持部７０の間隔が板厚方向において一定となるように設定されることが好ましい。 Furthermore, in the compression step, the second recesses 90 formed in the second main surface 42 are larger than the first recesses 80 formed in the first main surface 41 . Therefore, on the inner side surfaces 73 of the two holding portions 70 , the amount of displacement of the fractured surfaces 433 is larger than the amount of displacement of the sheared surfaces 432 . As a result, the interval between the two holding portions 70 tends to be constant in the plate thickness direction. Specifically, on the inner side surfaces 73 of the two holding portions 70, the distance between the two fractured surfaces 433 and the distance between the two sheared surfaces 432 tend to be substantially constant. The difference in size between the first concave portion 80 and the second concave portion 90 is preferably set so that the interval between the two holding portions 70 is constant in the plate thickness direction as the compression process is performed.

また、挟持部７０において、第１凹部８０はパンチＰ２が第１主面４１に押し付けられることで形成される点で、第１凹部８０の第１外壁面８２にはダレ８２１が生成され、第１凹部８０の第１内壁面８３にはダレ８３１が生成される。ダレ８２１は第１外壁面８２及び第１主面４１が接続する角部に生成され、ダレ８３１は第１内壁面８３及び第１主面４１が接続する角部に生成される。同様に、挟持部７０において、第２凹部９０はダイＤ２が第２主面４２に押し付けられることで形成される点で、第２凹部９０の第２外壁面９２にはダレ９２１が生成され、第２凹部９０の第２内壁面９３にはダレ９３１が生成される。ダレ９２１は第２外壁面９２及び第２主面４２が接続する角部に生成され、ダレ９３１は第２内壁面９３及び第２主面４２が接続する角部に生成される。こうした点で、第１実施形態における第１凹部８０及び第２凹部９０は、凹部を構成する壁面に丸みを帯びたダレを有している。 In addition, in the clamping portion 70, the first recess 80 is formed by pressing the punch P2 against the first main surface 41, so that the first outer wall surface 82 of the first recess 80 is sagging 821, A sag 831 is generated on the first inner wall surface 83 of the first recess 80 . The sagging 821 is generated at the corner where the first outer wall surface 82 and the first main surface 41 are connected, and the sagging 831 is generated at the corner where the first inner wall surface 83 and the first main surface 41 are connected. Similarly, in the clamping portion 70, the second recess 90 is formed by pressing the die D2 against the second main surface 42, so that the second outer wall surface 92 of the second recess 90 has a sagging 921. A sagging 931 is generated on the second inner wall surface 93 of the second recess 90 . A sag 921 is generated at a corner where the second outer wall surface 92 and the second main surface 42 are connected, and a sag 931 is generated at a corner where the second inner wall surface 93 and the second main surface 42 are connected. In this respect, the first recessed portion 80 and the second recessed portion 90 in the first embodiment have rounded sagging on the wall surfaces that constitute the recessed portions.

上述したように、電気接続端子４０は、せん断工程及び圧縮工程を経て製造されるため、電気接続端子４０の側面４３には、ダレ４３１、せん断面４３２及び破断面４３３といった加工の痕跡が残る。詳しくは、圧縮工程を経た電気接続端子４０においても、せん断面４３２は、破断面４３３よりも表面粗さが滑らかな面である。ただし、圧縮工程を経た電気接続端子において、破断面４３３はせん断面４３２と同様に板厚方向に延びる面となる。また、電気接続端子４０の第１主面４１と側面４３とを接続する角部はダレ４３１が残る点で、第１主面４１と側面４３とを接続する角部は、第２主面４２と側面４３とを接続する角部よりも丸みを帯びている。言い換えれば、第２主面４２と側面４３とを接続する角部は、第１主面４１と側面４３とを接続する角部よりも角張っている。なお、第２主面４２から突出するようにバリ４３４が生じていた場合には、圧縮工程の実施により、当該バリ４３４の突出が解消される。このため、電気接続端子４０は、せん断工程を経ても、バリ４３４が残らない場合もある。 As described above, since the electrical connection terminal 40 is manufactured through the shearing process and the compression process, traces of processing such as sagging 431 , sheared surface 432 and fractured surface 433 remain on the side surface 43 of the electrical connection terminal 40 . Specifically, even in the electrical connection terminal 40 that has undergone the compression process, the sheared surface 432 has a smoother surface roughness than the fractured surface 433 . However, in the electrical connection terminal that has undergone the compression process, the fractured surface 433 becomes a surface extending in the plate thickness direction like the sheared surface 432 . In addition, the corner connecting the first main surface 41 and the side surface 43 of the electrical connection terminal 40 has a sagging 431 , and the corner connecting the first main surface 41 and the side surface 43 is the second main surface 42 . and the side surface 43 are rounded. In other words, the corner connecting the second main surface 42 and the side surface 43 is sharper than the corner connecting the first main surface 41 and the side surface 43 . In addition, when the burr 434 is generated so as to protrude from the second main surface 42 , the projection of the burr 434 is eliminated by performing the compression step. Therefore, even if the electrical connection terminal 40 undergoes the shearing process, the burr 434 may not remain.

第１実施形態の作用及び効果について説明する。
（１）せん断工程を実施すると、中間体１００の側面４３にせん断面４３２及び破断面４３３が生成されるため、２つの挟持部７０の間隔が板厚方向に対して一定になりにくい。この点、圧縮工程の実施により挟持部７０の第２主面４２に第２凹部９０を設けるため、中間体１００の２つの挟持部７０の破断面４３３が互いに接近する方向に変位する。その結果、電気接続端子４０の２つの挟持部７０の間隔が板厚方向に対して不均一となることが抑制される。したがって、電気接続端子４０は、モータ２０の外部端子２１と接続されたとき、接触抵抗の増大を抑制できる。 Actions and effects of the first embodiment will be described.
(1) When the shearing step is performed, the sheared surface 432 and the fractured surface 433 are generated on the side surface 43 of the intermediate body 100, so the interval between the two clamping portions 70 is difficult to be constant in the plate thickness direction. In this respect, since the second recesses 90 are formed in the second main surfaces 42 of the clamping portions 70 by performing the compression step, the fractured surfaces 433 of the two clamping portions 70 of the intermediate body 100 are displaced toward each other. As a result, the interval between the two holding portions 70 of the electrical connection terminal 40 is prevented from becoming uneven in the plate thickness direction. Therefore, when the electrical connection terminals 40 are connected to the external terminals 21 of the motor 20, an increase in contact resistance can be suppressed.

（２）圧縮工程の実施により、挟持部７０の第１主面４１及び第２主面４２に第１凹部８０及び第２凹部９０をそれぞれ設けるため、２つの挟持部７０のせん断面４３２及び破断面４３３が互いに接近する方向に変位する。このため、電気接続端子４０は、２つの挟持部７０の間隔を狭くできる。言い換えれば、電気接続端子４０は、板厚の薄い外部端子２１に対応できる。また、第２凹部９０を第１凹部８０よりも大きくするため、２つの挟持部７０の間隔が板厚方向に対して不均一となることが抑制される。したがって、電気接続端子４０は、２つの挟持部７０の間隔を狭くしつつ、２つの挟持部７０の間隔を板厚方向に対して不均一となることを抑制できる。 (2) Since the first recess 80 and the second recess 90 are provided on the first main surface 41 and the second main surface 42 of the holding portion 70 by performing the compression step, the sheared surfaces 432 and the fractures of the two holding portions 70 are formed. The cross sections 433 are displaced toward each other. Therefore, the electrical connection terminal 40 can narrow the distance between the two holding portions 70 . In other words, the electrical connection terminal 40 can correspond to the thin external terminal 21 . In addition, since the second recessed portion 90 is made larger than the first recessed portion 80, the interval between the two holding portions 70 is prevented from becoming uneven in the plate thickness direction. Therefore, in the electrical connection terminal 40, the gap between the two holding parts 70 can be narrowed, and the gap between the two holding parts 70 can be prevented from becoming uneven in the plate thickness direction.

（第２実施形態）
以下、第２実施形態に係る電気接続端子４０Ａについて説明する。第２実施形態に係る電気接続端子４０Ａは、第１実施形態に係る電気接続端子４０Ａと比較したとき、第２凹部９０の形状が僅かに異なる。このため、第１実施形態と共通する部材構成について、同一の符号を付して説明を省略する。 (Second embodiment)
The electrical connection terminal 40A according to the second embodiment will be described below. The electrical connection terminal 40A according to the second embodiment is slightly different in the shape of the second concave portion 90 from the electrical connection terminal 40A according to the first embodiment. For this reason, the same reference numerals are assigned to the member configurations common to those of the first embodiment, and the description thereof is omitted.

図８及び図９に示すように、電気接続端子４０Ａは、基部５０と、基部５０から分岐して延びる２つの支持部６０と、２つの支持部６０の先端からそれぞれ延びる２つの挟持部７０Ａと、を有している。 As shown in FIGS. 8 and 9, the electrical connection terminal 40A includes a base portion 50, two support portions 60 branching from the base portion 50 and extending from the two support portions 60, and two holding portions 70A extending from the ends of the two support portions 60, respectively. ,have.

挟持部７０Ａは、第１主面４１から第２主面４２に向かって凹む第１凹部８０と、第２主面４２から第１主面４１に向かって凹む第２凹部９０Ａと、を有している。図９に示すように、第２凹部９０Ａは、第２凹部９０Ａの底面である第２底面９１と、第２凹部９０Ａにおける外側の面である第２外壁面９２と、第２凹部９０Ａにおける内側の面である第２内壁面９３Ａと、を含んでいる。 The holding portion 70A has a first recess 80 recessed from the first main surface 41 toward the second main surface 42 and a second recess 90A recessed from the second main surface 42 toward the first main surface 41. ing. As shown in FIG. 9, the second recess 90A includes a second bottom surface 91 that is the bottom surface of the second recess 90A, a second outer wall surface 92 that is the outer surface of the second recess 90A, and an inner surface of the second recess 90A. and a second inner wall surface 93A that is a surface of

図９に示すように、平面視において、第２底面９１は、第２凹部９０Ａの開口よりも一回り小さくなっている。第２外壁面９２は板厚方向に延び、第２内壁面９３Ａは板厚方向に対して傾いた方向に延びている。詳しくは、第２内壁面９３Ａは、第２底面９１から第２主面４２に向かうにつれて、挟持部７０Ａの内側面７３に接近するように傾いている。このため、第２実施形態において、第２凹部９０Ａは、板厚方向と直交する面積が第２底面９１から開口に向かうにつれて次第に大きくなっている。 As shown in FIG. 9, in plan view, the second bottom surface 91 is one size smaller than the opening of the second recess 90A. The second outer wall surface 92 extends in the thickness direction, and the second inner wall surface 93A extends in a direction inclined with respect to the thickness direction. Specifically, the second inner wall surface 93A is inclined so as to approach the inner surface 73 of the holding portion 70A from the second bottom surface 91 toward the second main surface 42 . Therefore, in the second embodiment, the area of the second concave portion 90A that is perpendicular to the plate thickness direction gradually increases from the second bottom surface 91 toward the opening.

なお、第２内壁面９３Ａの板厚方向に対する傾きは、破断面４３３の板厚方向に対する傾きが大きいほど大きくすることが好ましい。また、挟持部７０Ａにおける第１凹部８０及び第２凹部９０Ａの形成方法の関係で、第１外壁面８２、第１内壁面８３及び第２外壁面９２が板厚方向に対して僅かに傾斜する場合も考えられるが、第２内壁面９３Ａの板厚方向に対する傾きは、第１外壁面８２、第１内壁面８３及び第２外壁面９２の板厚方向に対する傾きよりも遥かに大きく設定される。 The inclination of the second inner wall surface 93A with respect to the thickness direction is preferably increased as the inclination of the fracture surface 433 with respect to the thickness direction increases. In addition, the first outer wall surface 82, the first inner wall surface 83, and the second outer wall surface 92 are slightly inclined with respect to the plate thickness direction due to the method of forming the first concave portion 80 and the second concave portion 90A in the holding portion 70A. In some cases, the inclination of the second inner wall surface 93A with respect to the thickness direction is set to be much larger than the inclination of the first outer wall surface 82, the first inner wall surface 83, and the second outer wall surface 92 with respect to the thickness direction. .

第２実施形態に係る電気接続端子４０Ａの製造方法は、第１実施形態と同様に、せん断工程及び圧縮工程を備える。第２実施形態は、圧縮工程において、中間体１００の第２主面４２に第２凹部９０Ａを形成するためのダイの形状が第１実施形態と異なる。 The method of manufacturing the electrical connection terminal 40A according to the second embodiment includes a shearing step and a compressing step as in the first embodiment. The second embodiment differs from the first embodiment in the shape of the die for forming the second concave portion 90A in the second main surface 42 of the intermediate body 100 in the compression step.

第２実施形態の作用及び効果について説明する。第２実施形態は、第１実施形態の作用効果（１），（２）と同等の作用効果に加え、以下の作用効果を得ることができる。
（３）図６に示すように、破断面４３３は板厚方向に対して傾くため、２つの挟持部７０Ａの破断面４３３の間隔は、第２主面４２に向かうにつれて次第に大きくなりやすい。このため、２つの挟持部７０Ａの破断面４３３の間隔を板厚方向に対して一定とするためには、圧縮工程の実施により、破断面４３３の第２主面４２に近い部分ほど大きく変位させる必要がある。この点、電気接続端子４０Ａにおいて、第２凹部９０Ａの板厚方向と直交する面積は、第２凹部９０Ａの開口から第２底面９１に向かうにつれて小さくなる。詳しくは、第２内壁面９３Ａが第２底面９１から離れるにつれて破断面４３３に接近するように傾く。このため、圧縮工程の実施により、破断面４３３の第２主面４２に近い部分ほど大きく変位する結果、２つの挟持部７０Ａの破断面４３３の間隔をより一定にしやすくなる。 Actions and effects of the second embodiment will be described. The second embodiment can obtain the following effects in addition to the effects (1) and (2) of the first embodiment.
(3) As shown in FIG. 6 , since the fractured surfaces 433 are inclined with respect to the plate thickness direction, the distance between the fractured surfaces 433 of the two holding portions 70A tends to gradually increase toward the second main surface 42 . Therefore, in order to make the distance between the fractured surfaces 433 of the two holding portions 70A constant in the plate thickness direction, the compressing process is performed to displace the fractured surfaces 433 closer to the second main surface 42 to a greater extent. There is a need. In this regard, in the electrical connection terminal 40A, the area perpendicular to the plate thickness direction of the second recess 90A decreases from the opening of the second recess 90A toward the second bottom surface 91 . Specifically, the second inner wall surface 93</b>A inclines so as to approach the fractured surface 433 as it separates from the second bottom surface 91 . Therefore, by performing the compression step, the portion of the fractured surface 433 closer to the second main surface 42 is displaced more greatly, and as a result, the interval between the fractured surfaces 433 of the two holding portions 70A can be more easily made constant.

（第３実施形態）
以下、第３実施形態に係る電気接続端子４０Ｂについて説明する。第３実施形態に係る電気接続端子４０Ｂは、第１実施形態に係る電気接続端子４０と比較したとき、支持部６０の構成が異なる。このため、第１実施形態と共通する部材構成について、同一の符号を付して説明を省略する。 (Third Embodiment)
The electrical connection terminal 40B according to the third embodiment will be described below. The electrical connection terminal 40B according to the third embodiment differs in the configuration of the support portion 60 from the electrical connection terminal 40 according to the first embodiment. For this reason, the same reference numerals are assigned to the member configurations common to those of the first embodiment, and the description thereof is omitted.

図１０及び図１１に示すように、電気接続端子４０Ｂは、基部５０と、基部５０から分岐して延びる２つの支持部６０Ｂと、２つの支持部６０Ｂの先端からそれぞれ延びる２つの挟持部７０と、を有している。 As shown in FIGS. 10 and 11, the electrical connection terminal 40B includes a base portion 50, two supporting portions 60B branching from the base portion 50 and extending from the two supporting portions 60B, and two holding portions 70 extending from the ends of the two supporting portions 60B. ,have.

支持部６０Ｂは、第１主面４１から第２主面４２に向かって凹む第３凹部６３と、第２主面４２から第１主面４１に向かって凹む第４凹部６４と、を有している。第３凹部６３及び第４凹部６４は、支持部６０Ｂの基端部に位置している。平面視において、第３凹部６３及び第４凹部６４は、略半円状をなしている。第３凹部６３及び第４凹部６４は、円弧状をなす部分が外側を向くように位置している。平面視において、第３凹部６３は第４凹部６４よりも小さくなっている。このため、板厚方向に第３凹部６３及び第４凹部６４を重ねると、第３凹部６３は第４凹部６４に収まっている。また、支持部６０Ｂに第３凹部６３及び第４凹部６４を設けたことで、支持部６０Ｂの外側面６１Ｂは、第３凹部６３及び第４凹部６４に対応する位置が外側に向かって凸となる。 The support portion 60B has a third recess 63 recessed from the first main surface 41 toward the second main surface 42 and a fourth recess 64 recessed from the second main surface 42 toward the first main surface 41. ing. The third recessed portion 63 and the fourth recessed portion 64 are located at the base end portion of the support portion 60B. In plan view, the third recess 63 and the fourth recess 64 are substantially semicircular. The third recessed portion 63 and the fourth recessed portion 64 are positioned so that the arc-shaped portions face outward. The third recess 63 is smaller than the fourth recess 64 in plan view. Therefore, when the third recessed portion 63 and the fourth recessed portion 64 are overlapped in the plate thickness direction, the third recessed portion 63 is accommodated in the fourth recessed portion 64 . Further, by providing the third recessed portion 63 and the fourth recessed portion 64 in the support portion 60B, the outer side surface 61B of the support portion 60B projects outward at positions corresponding to the third recessed portion 63 and the fourth recessed portion 64. Become.

第３実施形態において、支持部６０Ｂが第３凹部６３及び第４凹部６４を有する点で、第３凹部６３及び第４凹部６４は「アーム」の基端部に設けられているといえる。
第３実施形態に係る電気接続端子４０Ｂの製造方法は、第１実施形態と同様に、せん断工程及び圧縮工程を備える。第３実施形態は、圧縮工程において、中間体１００の第１主面４１及び第２主面４２にそれぞれ第３凹部６３及び第４凹部６４を形成するためのダイ及びパンチの形状が第１実施形態と異なる。 In the third embodiment, since the support portion 60B has the third recess 63 and the fourth recess 64, it can be said that the third recess 63 and the fourth recess 64 are provided at the base end portion of the "arm".
The method of manufacturing the electrical connection terminal 40B according to the third embodiment includes a shearing step and a compressing step as in the first embodiment. In the third embodiment, in the compression step, the shape of the die and punch for forming the third recess 63 and the fourth recess 64 in the first main surface 41 and the second main surface 42 of the intermediate body 100 are the same as those in the first embodiment. Different from the form.

第３実施形態の作用及び効果について説明する。第３実施形態は、第１実施形態の作用効果（１），（２）と同等の作用効果に加え、以下の作用効果を得ることができる。
（４）中間体１００の支持部６０の基端部の断面形状が矩形であるのに対して、電気接続端子４０Ｂの支持部６０Ｂの基端部の断面形状は略Ｈ字状をなしている。つまり、支持部６０Ｂは、基端部に第３凹部６３及び第４凹部６４を有するため、支持部６０Ｂの基端部の断面二次モーメントが大きくなる。したがって、電気接続端子４０Ｂは、２つの挟持部７０の間にモータ２０の外部端子２１が挿入される際、２つの支持部６０Ｂの基端部に発生する曲げ応力を低減できる。 Actions and effects of the third embodiment will be described. The third embodiment can obtain the following effects in addition to the effects (1) and (2) of the first embodiment.
(4) The cross-sectional shape of the base end portion of the support portion 60 of the intermediate body 100 is rectangular, whereas the cross-sectional shape of the base end portion of the support portion 60B of the electrical connection terminal 40B is substantially H-shaped. . That is, since the support portion 60B has the third concave portion 63 and the fourth concave portion 64 at the base end portion, the geometrical moment of inertia of the base end portion of the support portion 60B increases. Therefore, when the external terminal 21 of the motor 20 is inserted between the two clamping portions 70, the electrical connection terminal 40B can reduce the bending stress generated at the proximal ends of the two supporting portions 60B.

（第４実施形態）
以下、第４実施形態に係る電気接続端子４０Ｃについて説明する。第４実施形態に係る電気接続端子４０Ｃは、第１実施形態に係る電気接続端子４０と比較したとき、支持部６０と挟持部７０Ｃの構成が異なる。このため、第１実施形態と共通する部材構成について、同一の符号を付して説明を省略する。 (Fourth embodiment)
The electrical connection terminal 40C according to the fourth embodiment will be described below. The electrical connection terminal 40C according to the fourth embodiment differs from the electrical connection terminal 40 according to the first embodiment in the configuration of the supporting portion 60 and the holding portion 70C. For this reason, the same reference numerals are assigned to the member configurations common to those of the first embodiment, and the description thereof is omitted.

図１２及び図１３に示すように、電気接続端子４０Ｃは、基部５０と、基部５０から分岐して延びる２つの支持部６０Ｃと、２つの支持部６０Ｃの先端からそれぞれ延びる２つの挟持部７０Ｃと、を有している。 As shown in FIGS. 12 and 13, the electrical connection terminal 40C includes a base portion 50, two support portions 60C branching from the base portion 50 and extending from the two support portions 60C, and two holding portions 70C extending from the ends of the two support portions 60C. ,have.

支持部６０Ｃと挟持部７０Ｃとは、第１主面４１から第２主面４２に向かって凹む第１凹部８０Ｃと、第２主面４２から第１主面４１に向かって凹む第２凹部９０Ｃと、を有している。第１凹部８０Ｃは、第１凹部８０Ｃの底面である第１底面８１Ｃと、第１凹部８０Ｃにおける外側の面である第１外壁面８２Ｃと、第１凹部８０Ｃにおける内側の面である第１内壁面８３Ｃと、第１外壁面８２Ｃ及び第１内壁面８３Ｃを接続する第１接続壁面８４Ｃ，８５Ｃと、を含んでいる。同様に、第２凹部９０Ｃは、第２凹部９０Ｃの底面である第２底面９１Ｃと、第２凹部９０Ｃにおける外側の面である第２外壁面９２Ｃと、第２凹部９０Ｃにおける内側の面である第２内壁面９３Ｃと、第２外壁面９２Ｃ及び第２内壁面９３Ｃを接続する第２接続壁面９４Ｃ，９５Ｃと、を含んでいる。 The support portion 60C and the holding portion 70C are divided into a first recess portion 80C recessed from the first main surface 41 toward the second main surface 42 and a second recess portion 90C recessed from the second main surface 42 toward the first main surface 41. and have The first recess 80C includes a first bottom surface 81C that is the bottom surface of the first recess 80C, a first outer wall surface 82C that is the outer surface of the first recess 80C, and a first inner surface that is the inner surface of the first recess 80C. It includes a wall surface 83C and first connection wall surfaces 84C and 85C connecting the first outer wall surface 82C and the first inner wall surface 83C. Similarly, the second recess 90C includes a second bottom surface 91C that is the bottom surface of the second recess 90C, a second outer wall surface 92C that is the outer surface of the second recess 90C, and an inner surface of the second recess 90C. It includes a second inner wall surface 93C and second connection wall surfaces 94C and 95C connecting the second outer wall surface 92C and the second inner wall surface 93C.

平面視において、第１外壁面８２Ｃは支持部６０Ｃの外側面６１及び挟持部７０Ｃの第１外側面７１に沿った直線状をなし、第１内壁面８３Ｃは支持部６０Ｃの内側面６２及び挟持部７０Ｃの内側面７３に沿った曲線状をなしている。同様に、第２外壁面９２Ｃは支持部６０Ｃの外側面６１及び挟持部７０Ｃの第１外側面７１に沿った直線状をなし、第２内壁面９３Ｃは支持部６０Ｃの内側面６２及び挟持部７０Ｃの内側面７３に沿った曲線状をなしている。平面視において、第２外壁面９２Ｃは第１外壁面８２Ｃより外側に位置し、第２内壁面９３Ｃは第１内壁面８３Ｃよりも内側に位置している。一方、第１接続壁面８４Ｃ，８５Ｃは第２接続壁面９４Ｃ，９５Ｃとそれぞれ重なっている。このため、板厚方向に第１凹部８０Ｃ及び第２凹部９０Ｃを重ねると、第１凹部８０Ｃは第２凹部９０Ｃに収まり、第２凹部９０Ｃは第１凹部８０Ｃよりも大きくなっているといえる。 In plan view, the first outer wall surface 82C forms a straight line along the outer surface 61 of the support portion 60C and the first outer surface 71 of the holding portion 70C, and the first inner wall surface 83C extends along the inner surface 62 of the support portion 60C and the holding portion 70C. It has a curved shape along the inner surface 73 of the portion 70C. Similarly, the second outer wall surface 92C forms a straight line along the outer surface 61 of the support portion 60C and the first outer surface 71 of the clamping portion 70C, and the second inner wall surface 93C extends along the inner surface 62 of the support portion 60C and the clamping portion. It has a curved shape along the inner surface 73 of 70C. In plan view, the second outer wall surface 92C is located outside the first outer wall surface 82C, and the second inner wall surface 93C is located inside the first inner wall surface 83C. On the other hand, the first connection wall surfaces 84C, 85C overlap the second connection wall surfaces 94C, 95C, respectively. Therefore, when the first recessed portion 80C and the second recessed portion 90C are overlapped in the thickness direction, the first recessed portion 80C fits in the second recessed portion 90C, and the second recessed portion 90C is larger than the first recessed portion 80C.

第４実施形態において、第１凹部８０Ｃ及び第２凹部９０Ｃが支持部６０Ｃから挟持部７０Ｃにかけて設けられている点で、第１凹部８０Ｃ及び第２凹部９０Ｃは、「アーム」の先端部から基端部にかけて設けられているといえる。 In the fourth embodiment, the first recess 80C and the second recess 90C are provided from the support portion 60C to the clamping portion 70C. It can be said that it is provided over the edge.

第４実施形態に係る電気接続端子４０Ｃの製造方法は、第１実施形態と同様に、せん断工程及び圧縮工程を備える。第４実施形態は、圧縮工程において、中間体１００の第１主面４１及び第２主面４２に第１凹部８０Ｃ及び第２凹部９０Ｃをそれぞれ形成するためのダイ及びパンチの形状が第１実施形態と異なる。 A method of manufacturing an electrical connection terminal 40C according to the fourth embodiment includes a shearing step and a compressing step as in the first embodiment. In the fourth embodiment, in the compression step, the shape of the die and punch for forming the first concave portion 80C and the second concave portion 90C in the first main surface 41 and the second main surface 42 of the intermediate body 100 are the same as those in the first embodiment. Different from the form.

第４実施形態の作用及び効果について説明する。第４実施形態は、第１実施形態の作用効果（１），（２）及び第３実施形態の作用効果（４）と同等の作用効果に加え、以下の作用効果を得ることができる。 Actions and effects of the fourth embodiment will be described. In addition to the effects (1) and (2) of the first embodiment and the effects (4) of the third embodiment, the fourth embodiment can obtain the following effects.

（５）電気接続端子４０Ｃは、第３実施形態と比較して、凹部の形成数を減少できる。したがって、電気接続端子４０Ｃは、第３実施形態と比較して、製造が容易となる。
本実施形態は、以下のように変更して実施することができる。本実施形態及び以下の変更例は、技術的に矛盾しない範囲で互いに組み合わせて実施することができる。 (5) The electrical connection terminal 40C can reduce the number of recesses formed compared to the third embodiment. Therefore, the electrical connection terminal 40C is easier to manufacture than in the third embodiment.
This embodiment can be implemented with the following modifications. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

・図１４に示すように、変更例に係る電気接続端子４０Ｄの挟持部７０Ｄは、第２主面４２に第２凹部９０を有していれば、第１主面４１に第１凹部８０を有しなくてもよい。言い換えれば、電気接続端子４０Ｄにおいて、第１主面４１は凹部のない平坦面であってもよい。この場合であっても、電気接続端子４０Ｄは、第２主面４２に第２凹部９０を有する点で、第１実施形態の効果（１）と同等の効果を得ることができる。なお、挟持部７０Ｄにおいて、第２凹部９０は「凹部」の一例に相当する。 - As shown in FIG. 14, if the clamping portion 70D of the electrical connection terminal 40D according to the modification has the second recess 90 on the second main surface 42, the first recess 80 is formed on the first main surface 41. You don't have to. In other words, in the electrical connection terminal 40D, the first main surface 41 may be a flat surface without recesses. Even in this case, the electrical connection terminal 40</b>D has the second concave portion 90 on the second main surface 42 , so that the same effect as the effect (1) of the first embodiment can be obtained. Note that the second recessed portion 90 corresponds to an example of a "recessed portion" in the sandwiching portion 70D.

・電気接続端子４０において、第１凹部８０及び第２凹部９０は、一方の挟持部７０だけに設けてもよい。同様に、電気接続端子４０Ｂにおいて、第３凹部６３及び第４凹部６４は、一方の支持部６０Ｂだけに設けてもよい。 - In the electrical connection terminal 40 , the first concave portion 80 and the second concave portion 90 may be provided only in one of the holding portions 70 . Similarly, in the electrical connection terminal 40B, the third recessed portion 63 and the fourth recessed portion 64 may be provided only in one support portion 60B.

・電気接続端子４０は、基部５０から延びる部分をさらに備えてもよい。基部５０から延びる部分は、基部５０に対して屈曲していてもよい。
・電気接続端子４０において、２つの支持部６０は基部５０に対して屈曲していてもよい。 - The electrical connection terminal 40 may further include a portion extending from the base 50 . The portion extending from base 50 may be bent with respect to base 50 .
- In the electrical connection terminal 40 , the two support portions 60 may be bent with respect to the base portion 50 .

・電気接続端子４０において、平面視における第１凹部８０及び第２凹部９０の形状は例えば円形状又は矩形状など適宜に変更できる。ただし、第１凹部８０及び第２凹部９０は、少なくとも第１内壁面８３及び第２内壁面９３が挟持部７０の内側面７３に沿った形状であることが好ましい。また、挟持部７０における第１凹部８０及び第２凹部９０の数は２以上であってもよい。 - In the electrical connection terminal 40, the shape of the first recessed portion 80 and the second recessed portion 90 in plan view can be appropriately changed to, for example, a circular shape or a rectangular shape. However, it is preferable that at least the first inner wall surface 83 and the second inner wall surface 93 of the first recessed portion 80 and the second recessed portion 90 have a shape along the inner surface 73 of the holding portion 70 . Moreover, the number of the first concave portions 80 and the second concave portions 90 in the holding portion 70 may be two or more.

・電気接続端子４０において、第１凹部８０の深さ及び第２凹部９０の深さは異なっていてもよい。例えば、板厚方向におけるせん断面４３２の長さ及び破断面４３３の長さに応じて、第１凹部８０の深さ及び第２凹部９０の深さを変えてもよい。詳しくは、破断面４３３の長さがせん断面４３２の長さよりも長い場合、第２凹部９０の深さを第１凹部８０の深さよりも深くすることが好ましい。 - In the electrical connection terminal 40, the depth of the first recess 80 and the depth of the second recess 90 may be different. For example, the depth of the first recess 80 and the depth of the second recess 90 may be changed according to the length of the sheared surface 432 and the length of the fractured surface 433 in the plate thickness direction. Specifically, when the length of the fractured surface 433 is longer than the length of the sheared surface 432 , it is preferable to make the depth of the second recess 90 deeper than the depth of the first recess 80 .

・２つの電気接続端子４０は、同一形状である必要はない。例えば、２つの外部端子２１の形状が異なる場合には、２つの外部端子２１の形状に合わせて２つの電気接続端子４０の形状を変えることが好ましい。 - The two electrical connection terminals 40 need not have the same shape. For example, when the two external terminals 21 have different shapes, it is preferable to change the shape of the two electrical connection terminals 40 according to the shapes of the two external terminals 21 .

・電気接続端子４０の適用先は、アクチュエータ１０のハウジング３０に限らず各種の電気機器に適用可能である。 - The application of the electrical connection terminal 40 is not limited to the housing 30 of the actuator 10, but can be applied to various electrical devices.

１０…アクチュエータ
２０…モータ
２１…外部端子
３０…ハウジング
４０，４０Ａ～４０Ｄ…電気接続端子
４１…第１主面
４２…第２主面
４３…側面
４３１…ダレ
４３２…せん断面
４３３…破断面
４３４…バリ
５０…基部
６０，６０Ｂ，６０Ｃ…支持部
６３…第３凹部
６４…第４凹部
７０，７０Ａ，７０Ｃ，７０Ｄ…挟持部
８０，８０Ｃ…第１凹部
９０，９０Ａ，９０Ｃ…第２凹部 DESCRIPTION OF SYMBOLS 10... Actuator 20... Motor 21... External terminal 30... Housing 40, 40A-40D... Electrical connection terminal 41... First main surface 42... Second main surface 43... Side surface 431... Sagging 432... Shear surface 433... Fracture surface 434... Flash 50 Base 60, 60B, 60C Support 63 Third recess 64 Fourth recess 70, 70A, 70C, 70D Holding portion 80, 80C First recess 90, 90A, 90C Second recess

Claims (5)

板厚方向と直交する２つの主面を接続する側面にせん断面及び破断面を有する電気接続端子であって、
基部と、
前記基部から分岐して延びる２つのアームと、を備え、
２つの前記主面のうち、前記せん断面に近い主面を第１主面とし、前記破断面に近い主面を第２主面としたとき、
前記アームは、前記第１主面から前記第２主面に向かって凹む第１凹部と、前記第２主面から前記第１主面に向かって凹む第２凹部と、を有し、
前記板厚方向における平面視において、前記第２凹部は前記第１凹部よりも大きく、前記第１凹部は前記第２凹部に収まっている
電気接続端子。 An electrical connection terminal having a sheared surface and a fractured surface on a side surface connecting two main surfaces perpendicular to the thickness direction,
a base;
and two arms branching off from the base,
Of the two main surfaces, when the main surface close to the shear surface is the first main surface and the main surface close to the fracture surface is the second main surface,
the arm has a first recess that is recessed from the first main surface toward the second main surface and a second recess that is recessed from the second main surface toward the first main surface;
The electrical connection terminal, wherein the second recess is larger than the first recess when viewed in plan in the plate thickness direction, and the first recess is accommodated in the second recess. 前記第２凹部の前記板厚方向と直交する面積は、前記第２凹部の底面から前記第２凹部の開口に向かうにつれて大きくなる
請求項１に記載の電気接続端子。 2. The electrical connection terminal according to claim 1, wherein the area of the second recess perpendicular to the plate thickness direction increases from the bottom surface of the second recess toward the opening of the second recess. 前記アームの先端部は、前記第１凹部及び前記第２凹部を有し、
前記アームの基端部は、前記第１主面から前記第２主面に向かって凹む第３凹部と、前記第２主面から前記第１主面に向かって凹む第４凹部と、を有する
請求項１又は請求項２に記載の電気接続端子。 the distal end of the arm has the first recess and the second recess,
The base end of the arm has a third recess recessed from the first principal surface toward the second principal surface and a fourth recess recessed from the second principal surface toward the first principal surface. The electrical connection terminal according to claim 1 or 2. 前記第１凹部は、前記第１主面において、前記アームの先端部から基端部にかけて設けられ、
前記第２凹部は、前記第２主面において、前記アームの先端部から基端部にかけて設けられる
請求項１又は請求項２に記載の電気接続端子。 the first recess is provided on the first main surface from the distal end portion to the proximal end portion of the arm;
3. The electrical connection terminal according to claim 1, wherein the second recess is provided on the second main surface from the distal end portion to the proximal end portion of the arm. 板厚方向と直交する２つの主面を接続する側面にせん断面及び破断面を有する電気接続端子であって、
基部と、
前記基部から分岐して延びる２つのアームと、を備え、
２つの前記主面のうち、前記せん断面に近い主面を第１主面とし、前記破断面に近い主面を第２主面としたとき、
前記第１主面は平坦面であり、
前記アームは、前記第２主面に前記第１主面に向かって凹む凹部を有する
電気接続端子。 An electrical connection terminal having a sheared surface and a fractured surface on a side surface connecting two main surfaces perpendicular to the thickness direction,
a base;
and two arms branching off from the base,
Of the two main surfaces, when the main surface close to the shear surface is the first main surface and the main surface close to the fracture surface is the second main surface,
The first main surface is a flat surface,
The arm has a recess on the second main surface that is recessed toward the first main surface. An electrical connection terminal.

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