JP6735173B2 - Terminal manufacturing method and terminal - Google Patents

Terminal manufacturing method and terminal Download PDF

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JP6735173B2
JP6735173B2 JP2016146969A JP2016146969A JP6735173B2 JP 6735173 B2 JP6735173 B2 JP 6735173B2 JP 2016146969 A JP2016146969 A JP 2016146969A JP 2016146969 A JP2016146969 A JP 2016146969A JP 6735173 B2 JP6735173 B2 JP 6735173B2
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terminal
indent
contact
mating
contact portion
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洋人 中田
洋人 中田
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Yazaki Corp
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本発明は、相手端子との端子接触部にインデント部が設けられた端子の製造方法及び端子に関する。 The present invention relates to a terminal manufacturing method and a terminal in which an indent portion is provided at a terminal contact portion with a mating terminal.

例えば、端子には、アルミニウム合金材を使用したものが種々提案されている。アルミニウム合金材の圧延材は、熱調質時の熱によって表面に厚い酸化膜（膜厚は、数１０ｎｍ〜１００ｎｍ）が生成される。端子の表面に酸化膜が存在すると、相手端子との電気的導通性が阻害される。 For example, various terminals using an aluminum alloy material have been proposed. In the rolled aluminum alloy material, a thick oxide film (having a thickness of several tens nm to 100 nm) is formed on the surface due to the heat during the heat treatment. The presence of the oxide film on the surface of the terminal hinders electrical conductivity with the mating terminal.

そこで、相手端子との電気的導通性を向上させるために、次のような従来例が提案されている。第１従来例として、アルミニウム合金材の表面にＳｎ、Ｎｉ、インジウム等のめっき層を形成したものが提案されている（特許文献１参照）。又、第２従来例として、アルミニウム合金製の端子の相手接触部のみを鉄合金材にしたものが提案されている（特許文献２参照）。この第２従来例は、相手端子との接触荷重を大きくすることで相手端子との電気的導通性を向上させている。 Therefore, in order to improve the electrical conductivity with the mating terminal, the following conventional examples have been proposed. As a first conventional example, there is proposed an aluminum alloy material having a plated layer of Sn, Ni, indium or the like formed on the surface thereof (see Patent Document 1). Further, as a second conventional example, there has been proposed a terminal in which only a mating contact portion of an aluminum alloy terminal is made of an iron alloy material (see Patent Document 2). In the second conventional example, the electrical contact with the mating terminal is improved by increasing the contact load with the mating terminal.

特開２０１４−２０１７５３号公報JP, 2014-201753, A 特開２０１４−８９８１０号公報JP, 2014-89810, A

しかしながら、前記第１従来例では、めっき処理を行う必要があるため、端子の製造工程にめっき工程が加わると共にめっきの材料費が付加されるため、コストが高くなるという問題がある。 However, in the first conventional example, since it is necessary to perform the plating process, the plating process is added to the manufacturing process of the terminal and the material cost of the plating is added, so that there is a problem that the cost is increased.

前記第２従来例では、端子の製造工程で相手接触部の接続工程が加わると共に鉄合金の材料費（アルミニウム合金より鉄合金が割高）が付加されるため、第１従来例と同様にコストが高くなるという問題がある。 In the second conventional example, since the connecting step of the mating contact portion is added in the manufacturing process of the terminal and the material cost of the iron alloy (the iron alloy is more expensive than the aluminum alloy) is added, the cost is the same as in the first conventional example. There is the problem of becoming expensive.

そこで、本発明は、前記した課題を解決すべくなされたものであり、低コストで、且つ、相手端子との良好な電気的導通性が得られる端子の製造方法及び端子を提供することを目的とする。 Therefore, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a method for manufacturing a terminal and a terminal that can obtain good electrical conductivity with a mating terminal at low cost. And

本発明は、相手端子の相手接触部に接触する端子接触部を有し、前記端子接触部には、前記相手端子の接触側に突出し、頂点から外周側に向かって徐々に高さが低くなるインデント部が設けられた端子の製造方法であって、前記端子接触部の一方の面側に配置され、前記インデント部の表面形状に対応する凹み形状の窪み部を有する第１型と、前記端子接触部の他方の面側に配置され、前記第１型の前記窪み部よりも小さな面積で、且つ、前記端子接触部を押圧する押圧面がフラット面の突部を有する第２型とを用い、前記第１型と前記第２型で前記端子接触部をプレス成形して前記インデント部を形成し、前記第１型の前記窪み部の窪み形状は、断面形状が円弧状の曲面形状であり、前記第２型の前記突部は、円柱形状であることを特徴とする端子の製造方法である。 The present invention has a terminal contact portion that comes into contact with a mating contact portion of a mating terminal, and the terminal contact portion projects toward the contact side of the mating terminal and gradually decreases in height from the apex toward the outer peripheral side. A method of manufacturing a terminal provided with an indent portion, comprising: a first die, which is disposed on one surface side of the terminal contact portion and has a recessed concave portion corresponding to the surface shape of the indent portion; And a second die which is arranged on the other surface side of the contact portion and has an area smaller than that of the recessed portion of the first die, and a pressing surface for pushing the terminal contact portion has a flat surface protrusion. The terminal contact portion is press-molded by the first die and the second die to form the indent portion, and the depression shape of the depression portion of the first die is a curved surface shape having an arc-shaped cross section. The method of manufacturing a terminal is characterized in that the protrusion of the second type has a cylindrical shape .

他の本発明は、相手端子の相手接触部に接触する端子接触部を有し、前記端子接触部には、前記相手端子の接触側に突出し、頂点から外周側に向かって徐々に高さが低くなるインデント部が設けられた端子であって、前記インデント部が突出する反対面側には、前記インデント部の表面積よりも小さく、且つ、底面がフラットな凹部が形成され、前記インデント部の表面側は、断面形状が円弧状の曲面形状であり、前記凹部は、円柱形状であることを特徴とする端子である。 Another aspect of the present invention has a terminal contact portion that comes into contact with a mating contact portion of a mating terminal, the terminal contact portion protruding toward the contact side of the mating terminal and gradually increasing in height from the apex toward the outer peripheral side. A terminal provided with a lower indent portion, on the opposite surface side from which the indent portion projects, a concave portion having a flat bottom surface smaller than the surface area of the indent portion is formed, and the surface of the indent portion The side is a terminal whose cross-sectional shape is a curved surface having an arc shape, and the concave portion is a cylindrical shape .

本発明によれば、プレス成形されたインデント部は、その頂点位置の厚み寸法よりも頂点の周辺の厚み寸法が小さくなるため、第１型と第２型の押圧力によってインデント部の箇所のアルミニウム合金材の外周側への移動量が大きく、それに伴ってインデント部の表面側の材料の移動量（表面積拡大量）が大きくなるため、インデント部の表面に生成された酸化膜の破断が促進される。破断部位にはその後に酸化膜が生成されるが、当該酸化膜は破断部位以外の酸化膜と比べて薄いものしかできず、その薄い酸化膜は、相手端子の接触時の接触荷重によって容易に破断され、相手端子との間で導体間の接触状態が得られる。また、端子は、単一の導電性金属材（例えばアルミニウム合金材）の裸材を使用し、めっきなどの表面加工を行うことなく製造すれば良いため、低コストで、且つ、相手端子との良好な電気的導通性が得られる。 According to the present invention, the press-molded indent portion has a smaller thickness dimension around the apex than the thickness dimension at the apex position, so that the aluminum at the location of the indent portion is pressed by the pressing force of the first die and the second die. Since the amount of movement of the alloy material to the outer peripheral side is large and the amount of movement of the material on the surface side of the indent part (surface area expansion amount) is also large, the rupture of the oxide film generated on the surface of the indent part is promoted. It An oxide film is subsequently formed at the fracture site, but the oxide film can only be thinner than the oxide film other than the fracture site, and the thin oxide film is easily formed by the contact load at the time of contact with the mating terminal. It is broken, and the contact state between the conductors is obtained between the mating terminals. In addition, since the terminal can be manufactured using a bare material of a single conductive metal material (for example, an aluminum alloy material) without performing surface treatment such as plating, it is low cost and can be manufactured with a mating terminal. Good electrical conductivity is obtained.

本発明の一実施形態を示し、メス端子とオス端子の離間状態の断面図である。FIG. 3 is a cross-sectional view showing an embodiment of the present invention and in a state where a female terminal and a male terminal are separated from each other. 本発明の一実施形態を示し、メス端子とオス端子の嵌合状態の断面図である。FIG. 4 is a cross-sectional view showing the embodiment of the present invention and showing a fitted state of the female terminal and the male terminal. 本発明の一実施形態を示し、（ａ）は弾性撓み部の概略斜視図、（ｂ）はインデント部の詳細な断面図である。1 shows an embodiment of the present invention, (a) is a schematic perspective view of an elastic bending portion, and (b) is a detailed sectional view of an indent portion. 本発明の一実施形態を示し、（ａ）はインデント部のプレス成形を説明する断面図、（ｂ）はプレス成形過程におけるインデント部のアルミニウム合金材（母材）の移動を説明する断面図である。1 shows an embodiment of the present invention, (a) is a cross-sectional view illustrating press forming of an indent portion, and (b) is a cross-sectional view illustrating movement of an aluminum alloy material (base material) of the indent portion during a press forming process. is there. 本発明の一実施形態を示し、（ａ）は図３（ｂ）のＣ部拡大図、（ｂ）は接触荷重が作用する前の状態を説明する断面図、（ｃ）は端子間の接触荷重で酸化膜が破断された状態を示す断面図である。3 shows an embodiment of the present invention, FIG. 3A is an enlarged view of a C part of FIG. 3B, FIG. 3B is a sectional view for explaining a state before a contact load is applied, and FIG. It is sectional drawing which shows the state in which the oxide film was ruptured by a load. 本発明の比較例を示し、（ａ）はインデント部のプレス成形を説明する断面図、（ｂ）はプレス成形過程におけるインデント部のアルミニウム合金材（母材）の材料移動を説明する断面図である。The comparative example of this invention is shown, (a) is sectional drawing explaining the press forming of an indent part, (b) is sectional drawing explaining the material movement of the aluminum alloy material (base material) of an indent part in a press forming process. is there.

以下、本発明の一実施形態を図面に基づいて説明する。 An embodiment of the present invention will be described below with reference to the drawings.

図１〜図５は本発明の一実施形態を示す。図１及び図２に示すように、メス端子１は、全体が単一の導電性金属であるアルミニウム合金材より形成されている。メス端子１は、所定形状に打ち抜かれたアルミニウム合金材を折り曲げ加工して形成されている。メス端子１は、オス端子１０のタブ部１１が挿入される箱部２を有する。箱部２は、前方が開口された方形状である。箱部２内には、箱部２の下面部より折り曲げられた端子接触部である弾性撓み部３が配置されている。弾性撓み部３には、上面側（オス端子１０の挿入されるタブ部１１側）に向かって突出するインデント部４が設けられている。 1 to 5 show an embodiment of the present invention. As shown in FIGS. 1 and 2, the female terminal 1 is entirely made of an aluminum alloy material which is a single conductive metal. The female terminal 1 is formed by bending an aluminum alloy material punched into a predetermined shape. The female terminal 1 has a box portion 2 into which the tab portion 11 of the male terminal 10 is inserted. The box portion 2 has a rectangular shape with an open front. Inside the box portion 2, an elastic bending portion 3 which is a terminal contact portion bent from the lower surface portion of the box portion 2 is arranged. The elastic bending portion 3 is provided with an indent portion 4 protruding toward the upper surface side (the tab portion 11 side into which the male terminal 10 is inserted).

インデント部４は、図３（ａ）、（ｂ）に詳しく示すように、その表面が頂点から外周側に向かって徐々に高さが低くなる円弧状の曲面であり、中心の頂点が最上方に位置している。 As shown in detail in FIGS. 3A and 3B, the indent portion 4 has an arcuate curved surface whose surface gradually decreases in height from the apex toward the outer peripheral side, and the apex at the center is the uppermost portion. Is located in.

インデント部４の裏面側（突出する表面の反対面側）には、インデント部４の表面積よりも小さく、且つ、円柱形の凹部５が形成されている。円柱形の凹部５によって、インデント部４の裏面（突出する表面の反対面）は、フラット面４ｂに形成されている。 On the back surface side (the surface opposite to the projecting surface) of the indent portion 4, a cylindrical recess 5 smaller than the surface area of the indent portion 4 is formed. Due to the cylindrical recess 5, the back surface (the surface opposite to the protruding surface) of the indent portion 4 is formed into a flat surface 4b.

箱部２の上面壁、つまり、弾性撓み部３のインデント部４側には、ビード部７が設けられている。ビード部７は、インデント部４に間隔を置いて対向配置される位置に設けられている。ビード部７は、インデント部４に対して端子嵌合方向Ａの両外側位置が最も突出した２山形状の凸部である。ビード部７は、箱部２の上面壁を折り曲げて形成されている。 A bead portion 7 is provided on the upper surface wall of the box portion 2, that is, on the indent portion 4 side of the elastic bending portion 3. The bead portion 7 is provided at a position opposed to the indent portion 4 with a space therebetween. The bead portion 7 is a convex portion having a double mountain shape in which both outer positions in the terminal fitting direction A project most with respect to the indent portion 4. The bead portion 7 is formed by bending the upper wall of the box portion 2.

メス端子１は、アルミニウム合金材の母材のみより形成されている。つまり、メス端子１は、アルミニウム合金材の圧延材より形成され、めっき等の表面加工が施されていない。アルミニウム合金材の圧延材は、熱調質時の熱によって表面に厚い熱酸化膜８（膜厚は、数１０ｎｍ〜１００ｎｍ）が生成される。しかし、下記する製造方法の結果、インデント部４の表面のみは、図３（ｂ）に示すように、厚い熱酸化膜８には破断箇所が形成され、この破断箇所には薄い自然酸化膜９が生成されている。 The female terminal 1 is formed only of a base material of an aluminum alloy material. That is, the female terminal 1 is made of a rolled aluminum alloy material and is not surface-treated such as plating. A thick thermal oxide film 8 (having a thickness of several tens nm to 100 nm) is formed on the surface of the rolled aluminum alloy material due to the heat during heat treatment. However, as a result of the manufacturing method described below, only the surface of the indented portion 4 has a broken portion formed in the thick thermal oxide film 8 as shown in FIG. 3B, and a thin natural oxide film 9 is formed in this broken portion. Is being generated.

次に、インデント部４の製造について説明する。インデント部４は、図４（ａ）に示すように、プレス成形機２０を用いて成形される。プレス成形機２０は、第１型２１と第２型２２を有する。第１型２１は、弾性撓み部３（正確には、後工程の折り曲げ工程によって弾性撓み部３に成形される部位であるが、便宜上弾性撓み部３として説明する）の表面側に配置され、インデント部４の表面形状に対応する凹み形状の窪み部２１ａを有する。第２型２２は、弾性撓み部３の裏面側に配置され、第１型２１の窪み部２１ａよりも小さな面積の円柱状の突部２２ａを有する。突部２２ａは、弾性撓み部３の裏面を押圧する押圧面がフラット面２２ｂである。 Next, manufacturing of the indent portion 4 will be described. The indent portion 4 is molded using a press molding machine 20, as shown in FIG. The press molding machine 20 has a first die 21 and a second die 22. The first die 21 is disposed on the front surface side of the elastic bending portion 3 (correctly, it is a portion that is molded into the elastic bending portion 3 in the bending step of the subsequent process, but will be described as the elastic bending portion 3 for convenience). The indented portion 4 has a recess 21 a having a recessed shape corresponding to the surface shape of the indented portion 4. The second die 22 is arranged on the back surface side of the elastic bending portion 3 and has a cylindrical protrusion 22a having an area smaller than that of the recess 21a of the first die 21. The projection 22a has a flat surface 22b as a pressing surface that presses the back surface of the elastic bending portion 3.

図６には、比較例のプレス成形機３０が示されている。比較例のプレス成形機３０は、第１型３１と第２型３２を有する。第１型３１は、弾性撓み部３（正確には、後工程の折り曲げ工程によって弾性撓み部３に成形される部位であるが、便宜上弾性撓み部３として説明する）の表面側に配置され、インデント部４の表面形状（円弧状の曲面）に対応する凹み形状の窪み部３１ａを有する。第２型３２は、弾性撓み部３の裏面側に配置され、第１型３１の窪み部３１ａとほぼ同じ形状の突部３２ａを有する。従って、突部３２ａは、弾性撓み部３の裏面を押圧する押圧面が円弧状の曲面３２ｂである。 FIG. 6 shows a press molding machine 30 of a comparative example. The press molding machine 30 of the comparative example has a first die 31 and a second die 32. The first die 31 is disposed on the front surface side of the elastic bending portion 3 (correctly, it is a portion that is molded into the elastic bending portion 3 in the bending step of the subsequent step, but will be described as the elastic bending portion 3 for convenience). The indented portion 4 has a recessed concave portion 31 a corresponding to the surface shape (curved curved surface). The second die 32 is disposed on the back surface side of the elastic bending portion 3 and has a protrusion 32a having substantially the same shape as the recess 31a of the first die 31. Therefore, in the protrusion 32a, the pressing surface that presses the back surface of the elastic bending portion 3 is a curved surface 32b having an arc shape.

比較例のプレス成形機３０では、図６（ｂ）に示すように、インデント部４の全域が頂点位置とほぼ同じ厚み寸法となるため、インデント部４に形態変形される箇所のアルミニウム合金材の材料移動が小さく、これに倣ってインデント部４の表面側のアルミニウム合金材の移動量（表面積拡大量）が小さい。そのため、熱酸化膜８が脆性材料の特性を示すものの極僅かにしか破断が発生しない（破断するための表面積拡大率の閾値は、約１％）。 In the press molding machine 30 of the comparative example, as shown in FIG. 6B, the entire indent portion 4 has almost the same thickness dimension as the apex position. The material movement is small, and accordingly, the movement amount (surface area expansion amount) of the aluminum alloy material on the surface side of the indent portion 4 is small. Therefore, although the thermal oxide film 8 exhibits the characteristics of a brittle material, only a very small amount of fracture occurs (the threshold value of the surface area expansion rate for fracture is about 1%).

これに対し、本実施形態のプレス成形機２０では、図４（ｃ）に示すように、インデント部４の頂点位置の厚み寸法ｄ１よりも頂点の周辺の厚み寸法ｄ２が小さくなるため、第１型２１と第２型２２の押圧力によってインデント部４に形態変形される箇所のアルミニウム合金材の外周側への移動量が大きく、それに伴ってインデント部４の表面側の材料の移動量（表面積拡大量）が大きくなる。熱酸化膜８が脆性材料の特性を示すため、インデント部４の表面側の伸びに追従できずに、インデント部４の表面に生成された熱酸化膜８の破断が促進される。破断によって新生面が露出し、この新生面にはその後に自然酸化膜９が生成されるが、自然酸化膜９は熱酸化膜８と比べて薄いものとなる（図３（ａ）参照）。 On the other hand, in the press molding machine 20 of the present embodiment, as shown in FIG. 4C, since the thickness dimension d2 around the apex is smaller than the thickness dimension d1 at the apex position of the indent portion 4, The amount of movement of the aluminum alloy material to the outer peripheral side at the portion that is deformed into the indent portion 4 by the pressing force of the mold 21 and the second mold 22 is large, and accordingly, the amount of movement of the material on the surface side of the indent portion 4 (surface area) The enlargement amount) becomes large. Since the thermal oxide film 8 exhibits the characteristics of a brittle material, the thermal oxide film 8 formed on the surface of the indent portion 4 is promoted without being able to follow the elongation on the surface side of the indent portion 4. The rupture exposes the new surface, and the natural oxide film 9 is subsequently formed on the new surface, but the natural oxide film 9 becomes thinner than the thermal oxide film 8 (see FIG. 3A).

このようにしてインデント部４の表面に厚い熱酸化膜８と薄い自然酸化膜９が形成されたメス端子１に、オス端子１０を嵌合する。オス端子１０は、銅合金材より形成されている。オス端子１０は、タブ部１１の表面にＳｎめっき層１２（図５（ｂ）に図示）が形成され、Ｓｎめっき層１２の表面には薄い自然酸化膜１３が生成されている。 In this way, the male terminal 10 is fitted to the female terminal 1 in which the thick thermal oxide film 8 and the thin natural oxide film 9 are formed on the surface of the indent portion 4. The male terminal 10 is made of a copper alloy material. In the male terminal 10, the Sn plating layer 12 (shown in FIG. 5B) is formed on the surface of the tab portion 11, and the thin natural oxide film 13 is formed on the surface of the Sn plating layer 12.

図１の離間位置にあって、オス端子（相手端子）１０のタブ部（相手接触部）１１をメス端子１の箱部２に挿入する。すると、先ずタブ部１１の先端が弾性撓み部３に当接し、この当接箇所より更に挿入が進むと、弾性撓み部３が撓み変形してタブ部１１の挿入が許容される。タブ部１１の挿入過程では、インデント部４がタブ部１１の接触面を摺動し、端子挿入完了位置に達する（図２の位置）。 At the separated position in FIG. 1, the tab portion (mate contact portion) 11 of the male terminal (mate terminal) 10 is inserted into the box portion 2 of the female terminal 1. Then, first, the tip of the tab portion 11 comes into contact with the elastic bending portion 3, and when the insertion further proceeds from this abutting portion, the elastic bending portion 3 is flexibly deformed and the insertion of the tab portion 11 is allowed. In the process of inserting the tab portion 11, the indent portion 4 slides on the contact surface of the tab portion 11 and reaches the terminal insertion completion position (position in FIG. 2).

図５（ｃ）に示すように、端子挿入完了位置では、タブ部１１とインデント部４が弾性撓み部３の撓み復帰力による接触荷重を受けて接触する。すると、この接触荷重によってタブ部１１の表面の薄い自然酸化膜１３が、インデント部４の表面の薄い自然酸化膜９がそれぞれ容易に破断される。自然酸化膜９，１３の破断（ひび割れ）箇所より内部の導体が接触荷重等によって表面側に押し出される。このように導体が表面側に押し出される箇所が増加するため、導体同士の接触点（オーミック点）が増加する。 As shown in FIG. 5C, at the terminal insertion completion position, the tab portion 11 and the indent portion 4 are brought into contact with each other by receiving a contact load due to the bending return force of the elastic bending portion 3. Then, due to this contact load, the thin natural oxide film 13 on the surface of the tab portion 11 and the thin natural oxide film 9 on the surface of the indent portion 4 are easily broken. The conductor inside is extruded from the natural oxide films 9 and 13 at the rupture (cracking) portion to the surface side by contact load or the like. In this way, the number of locations where the conductors are extruded toward the front surface increases, so the number of contact points (ohmic points) between the conductors increases.

以上より、メス端子１は、単一の導電性金属材であるアルミニウム合金材の裸材を使用し、めっきなどの表面加工を行うことなく製造すれば良いため、低コストで、且つ、オス端子１０との良好な電気的導通性が得られる。 From the above, the female terminal 1 can be manufactured using a bare material of an aluminum alloy material that is a single conductive metal material without performing surface treatment such as plating, so that the cost is low and the male terminal is Good electrical conductivity with 10 can be obtained.

この実施形態では、インデント部４がメス端子１に設けられた場合を説明したが、オス端子１０に設けられた場合、メス端子１とオス端子１０の双方に設けられた場合も本発明を適用できる。 In this embodiment, the case where the indent portion 4 is provided on the female terminal 1 has been described, but the present invention is also applied to the case where it is provided to the male terminal 10 and the case where it is provided to both the female terminal 1 and the male terminal 10. it can.

この実施形態では、メス端子１がアルミニウム合金材にて形成された場合を説明したが、アルミニウム合金材以外で、表面に酸化膜が生成される導体にて形成された場合にも本発明を適用できる。 In this embodiment, the case where the female terminal 1 is formed of an aluminum alloy material has been described, but the present invention is also applied to the case where the female terminal 1 is formed of a conductor having an oxide film on the surface, other than the aluminum alloy material. it can.

１ メス端子（端子）
３ 弾性撓み部（端子接触部）
４ インデント部
５ 凹部
１０ オス端子（相手端子）
１１ タブ部（相手接触部）
２１ 第１型
２１ａ 窪み部
２２ 第２型
２２ａ 突部
２２ｂ フラット面 1 female terminal (terminal)
3 Elastic flexure part (terminal contact part)
4 Indented portion 5 Recessed portion 10 Male terminal (mate terminal)
11 Tab (Mating contact)
21 1st type|mold 21a hollow part 22 2nd type|mold 22a protrusion 22b flat surface

Claims (4)

相手端子の相手接触部に接触する端子接触部を有し、前記端子接触部には、前記相手端子の接触側に突出し、頂点から外周側に向かって徐々に高さが低くなるインデント部が設けられた端子の製造方法であって、
前記端子接触部の一方の面側に配置され、前記インデント部の表面形状に対応する凹み形状の窪み部を有する第１型と、前記端子接触部の他方の面側に配置され、前記第１型の前記窪み部よりも小さな面積で、且つ、前記端子接触部を押圧する押圧面がフラット面の突部を有する第２型とを用い、
前記第１型と前記第２型で前記端子接触部をプレス成形して前記インデント部を形成し、
前記第１型の前記窪み部の窪み形状は、断面形状が円弧状の曲面形状であり、前記第２型の前記突部は、円柱形状であることを特徴とする端子の製造方法。 A terminal contact portion that comes into contact with the mating contact portion of the mating terminal is provided, and the terminal contact portion is provided with an indent portion that projects toward the contact side of the mating terminal and that gradually decreases in height from the apex toward the outer peripheral side. And a method for manufacturing the terminal,
A first die disposed on one surface side of the terminal contact portion and having a recessed recess corresponding to a surface shape of the indent portion; and a first die disposed on the other surface side of the terminal contact portion, A second mold having a smaller area than the recessed part of the mold and having a flat surface for pressing the terminal contact portion,
Press-molding the terminal contact portion with the first die and the second die to form the indent portion ,
The method of manufacturing a terminal , wherein the depression shape of the depression portion of the first mold is a curved surface shape having an arc shape in cross section, and the protrusion portion of the second mold is a cylindrical shape . 請求項１記載の端子の製造方法であって、
端子の母材は、アルミニウム合金の圧延材を用いられたことを特徴とする端子の製造方法。 A method of manufacturing a terminal according to claim 1, wherein
A method of manufacturing a terminal, wherein a rolled material of an aluminum alloy is used as a base material of the terminal. 相手端子の相手接触部に接触する端子接触部を有し、前記端子接触部には、前記相手端子の接触側に突出し、頂点から外周側に向かって徐々に高さが低くなるインデント部が設けられた端子であって、A terminal contact portion that comes into contact with the mating contact portion of the mating terminal is provided, and the terminal contact portion is provided with an indent portion that projects toward the contact side of the mating terminal and that gradually decreases in height from the apex toward the outer peripheral side. The terminal
前記インデント部の裏面側には、前記インデント部の表面積よりも小さく、且つ、底面がフラットな凹部が形成され、 On the back surface side of the indent portion, a recess having a smaller bottom surface than the surface area of the indent portion and a flat bottom surface is formed,
前記インデント部の表面側は、断面形状が円弧状の曲面形状であり、前記凹部は、円柱形状であることを特徴とする端子。 The terminal side is characterized in that a cross-sectional shape of the front surface side of the indented portion is a curved surface having an arc shape, and the recessed portion has a cylindrical shape. 請求項３記載の端子であって、
全体がアルミニウム合金の圧延材より形成されたことを特徴とする端子。 The terminal according to claim 3,
A terminal characterized in that it is entirely formed of rolled aluminum alloy .
JP2016146969A 2016-07-27 2016-07-27 Terminal manufacturing method and terminal Expired - Fee Related JP6735173B2 (en)

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