JP2001015244A - Manufacture of female terminal - Google Patents

Manufacture of female terminal

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Publication number
JP2001015244A
JP2001015244A JP11186597A JP18659799A JP2001015244A JP 2001015244 A JP2001015244 A JP 2001015244A JP 11186597 A JP11186597 A JP 11186597A JP 18659799 A JP18659799 A JP 18659799A JP 2001015244 A JP2001015244 A JP 2001015244A
Authority
JP
Japan
Prior art keywords
spring
female terminal
heat
terminal
spring material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP11186597A
Other languages
Japanese (ja)
Inventor
Jun Shiotani
準 塩谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Wiring Systems Ltd
Sumitomo Electric Industries Ltd
Harness System Technologies Research Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Wiring Systems Ltd, Sumitomo Electric Industries Ltd, Harness System Technologies Research Ltd filed Critical Sumitomo Wiring Systems Ltd
Priority to JP11186597A priority Critical patent/JP2001015244A/en
Publication of JP2001015244A publication Critical patent/JP2001015244A/en
Withdrawn legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To manufacture a female terminal having a proper spring performance while easiness to execute processing is well maintained. SOLUTION: A female terminal 1 is manufactured through a heat treatment process P1 to heat an original spring material 1a to a specified temp. so that a heat treated work 1b for a spring is obtained, a slow cooling process P2 to cool slowly the heat treated work 1b to the ordinary temp. to produce an annealed work for spring 1c, a press working process P3 to subject the annealed work 1c to a press working process so that a plurality of half-completed spring products 1d are obtained, and a bending process P4 to subject them 1d to a bending process so that springs 1 for terminal are produced.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、各種の電子機器に
採用される小型の雌端子の製造方法に関するものであ
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a small female terminal used in various electronic devices.

【0002】[0002]

【従来の技術】従来、例えば自動車の電気系統に採用さ
れるコネクタが知られている。このコネクタは、電子部
品間を電気的に接続するときに使用されるものであり、
各電子部品から引き出されたリード線の先端にそれぞれ
付設され、一方のコネクタに設けられた雄端子を他方の
コネクタの雌端子に嵌挿することによって両者が電気的
に接続されるようになっている。
2. Description of the Related Art Conventionally, for example, a connector used in an electric system of an automobile has been known. This connector is used when electrically connecting electronic components,
Attached to the tip of the lead wire drawn out from each electronic component, the male terminal provided on one connector is inserted into the female terminal of the other connector, so that both are electrically connected. I have.

【0003】ところで、近年、自動車は燃費向上のため
軽量化される傾向にあり、それを達成するために電線の
細線化が図られ、これに伴ってコネクタの小型化が進ん
でいる。
[0003] In recent years, automobiles have tended to be reduced in weight to improve fuel efficiency, and in order to achieve this, wires have been made thinner, and accordingly, connectors have been reduced in size.

【0004】かかる小型のコネクタにあっては端子同士
の接続位置に小さいばね(端子用ばね)が使用され、接
続時にこの端子用ばねが弾性変形するとともに、この弾
性変形による弾性力で雌雄の端子の確実な接続状態が得
られるようになされている。このような小型の端子用ば
ねは、通常、薄い板状のばね材を打ち抜きプレス処理す
ることによってまず多数のばね原体を製造し、引き続き
各ばね原体に折り曲げ加工(成形処理)を施すことによ
って形成されている。
In such a small connector, a small spring (terminal spring) is used at the connection position between the terminals. The terminal spring is elastically deformed at the time of connection, and the male and female terminals are elastically deformed by the elastic force due to the elastic deformation. This ensures that a reliable connection state can be obtained. Such small terminal springs are usually manufactured by first punching and pressing a thin plate-shaped spring material to produce a large number of spring bodies, and then bending (forming) each spring body. Is formed by

【0005】[0005]

【発明が解決しようとする課題】しかしながら、従来の
上記ような端子用ばねの製造方法においては、塑性変形
し難いばね原体に折り曲げ処理を施して所定の形状に成
形しなければならず、成形処理が困難であるという問題
点を有していた。このことは、近年の車両用コネクタの
小型化進展による加工の困難性とも相俟ってさらに大き
な問題になる傾向にある。
However, in the conventional method for manufacturing a terminal spring as described above, a spring body that is unlikely to be plastically deformed must be bent and formed into a predetermined shape. There was a problem that processing was difficult. This tends to be an even greater problem, in combination with the difficulty of processing due to the recent progress in miniaturization of vehicle connectors.

【0006】そこで、ばね原体をばね鋼になる前の塑性
変形し易い鋼材でつくり、このばね原体に折り曲げ処理
を施し、引き続き加熱してから急冷する、いわゆる焼き
入れ処理を施すことによって端子用ばねを製造すること
が考えられるが、このようにすると工程が非常に複雑に
なるとともに、焼き入れ処理は温度や時間の条件が非常
に厳密であり、ばねを常に安定した状態で製造するのが
難しいという新たな問題点が提起される。
Therefore, the spring element is made of a steel material which is easily plastically deformed before it becomes spring steel, and the spring element is subjected to a bending treatment, followed by heating and quenching, that is, a so-called quenching treatment. It is conceivable to manufacture a spring for use in such a case, but this makes the process very complicated, and the temperature and time conditions for the quenching process are very strict, so that the spring is always manufactured in a stable state. A new problem is raised.

【0007】本発明は、上記のような問題点を解決する
ためになされたものであり、加工が容易でありながら適
正なばね性能を備えた端子用ばねを有する雌端子の製造
方法を提供することを目的としている。
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a method of manufacturing a female terminal having a terminal spring having an appropriate spring performance while being easy to process. It is intended to be.

【0008】[0008]

【課題を解決するための手段】請求項1記載の発明は、
雄端子の挿入方向に対して後ろに湾曲させたばね接点部
を有する雌端子の製造方法であって、加工前の原ばね材
を所定の温度まで加熱して熱処理することにより熱処理
ばね材にする熱処理工程と、この熱処理工程で熱処理さ
れた熱処理ばね材を常温まで除冷してなましばね材にす
る除冷工程と、この除冷工程で除冷されたなましばね材
に曲げ加工を施して上記ばね接点部を備えた雌端子にす
る曲げ工程とからなることを特徴とするものである。
According to the first aspect of the present invention,
A method for manufacturing a female terminal having a spring contact portion curved backward with respect to the insertion direction of a male terminal, wherein the raw spring material before processing is heated to a predetermined temperature and heat-treated to make a heat-treated spring material. Process, a cooling step of cooling the heat-treated spring material that has been heat-treated in this heat-treating step to room temperature to form an annealed spring material, and bending the annealed spring material that has been cooled in this cooling step. And a bending step of forming a female terminal having the spring contact portion.

【0009】この発明によれば、原ばね材を熱処理工程
で熱処理することによって形成した熱処理ばね材は、つ
ぎの除冷工程でなまされてなましばね材になる。このな
ましばね材は塑性変形がし易くなっているため、つぎの
曲げ工程で容易に塑性変形して所定のばね形状に成形さ
れる。そして、曲げ工程で得られた端子用ばねは、その
曲折位置が、塑性変形の増加につれた転移線の林立で硬
くなる、いわゆる加工硬化によって弾性力が増大し、ば
ねとしての機能が確実に付与される。
According to the present invention, the heat-treated spring material formed by heat-treating the original spring material in the heat treatment step becomes an annealed spring material in the subsequent cooling step. Since the annealing spring material is easily plastically deformed, it is easily plastically deformed and formed into a predetermined spring shape in the next bending step. The terminal spring obtained in the bending step has its bending position hardened by the transition line formed by the increase of the plastic deformation. The elastic force increases by the so-called work hardening, and the function as the spring is reliably given. Is done.

【0010】このように、原ばね材を一旦熱処理してか
ら除冷し、引き続き曲げ加工を行うようにしているた
め、従来のように曲げ加工が行い難いばね材にそのまま
の状態で曲げ処理を施す場合に比べて、曲げ加工の良好
な加工性を確保した上で優れたばね性能を備えた端子用
ばねを有する雌端子を得ることが可能になる。
As described above, the original spring material is once heat-treated, then cooled, and then subjected to the bending process. Therefore, the bending process is performed on the spring material which is difficult to be bent as it is conventionally. Compared with the case of applying, it is possible to obtain a female terminal having a terminal spring having excellent spring performance while ensuring good workability of bending.

【0011】請求項2記載の発明は、請求項1記載の発
明において、上記熱処理工程における所定の温度は、上
記原ばね材の金属組織が再結晶を行う再結晶温度である
ことを特徴とするものである。
According to a second aspect of the present invention, in the first aspect, the predetermined temperature in the heat treatment step is a recrystallization temperature at which a metal structure of the original spring material is recrystallized. Things.

【0012】この発明によれば、原ばね材は、再結晶温
度で熱処理されることにより結晶粒が成長拡大して軟化
し、これによって曲げ加工がし易くなる。
According to the present invention, the original spring material is heat-treated at the recrystallization temperature, so that the crystal grains grow and expand and soften, thereby facilitating bending.

【0013】請求項3記載の発明は、請求項1または2
記載の発明において、上記原料材に対してばね接点部の
弾性変形の方向と同一方向に曲げ加工を施すことを特徴
とするものである。
[0013] The invention according to claim 3 is the invention according to claim 1 or 2.
In the invention described above, the raw material is subjected to bending in the same direction as the direction of elastic deformation of the spring contact portion.

【0014】この発明によれば、端子用ばねの弾性変形
の方向に向かうばね性能を向上させることができる。
According to the present invention, the spring performance of the terminal spring in the elastic deformation direction can be improved.

【0015】[0015]

【発明の実施の形態】本発明は、雌端子との接続状態保
持用として使用される端子用ばねを備えた雌端子の製造
方法に関するものであり、製造された雌端子は、主に自
動車の電気系統で使用される各種の電子部品間で電気的
接続用として好適に用いられる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a method for manufacturing a female terminal provided with a terminal spring used for maintaining a connection state with the female terminal. It is suitably used for electrical connection between various electronic components used in an electric system.

【0016】図1は、本発明に係る雌端子の製造方法の
一実施形態を示す工程図である。この工程図に示すよう
に、雌端子1は、加工前の原ばね材1aを所定の温度ま
で加熱して熱処理することにより熱処理ばね材1bにす
る熱処理工程P1と、この熱処理工程P1で熱処理され
た熱処理ばね材1bを常温まで除冷してなましばね材1
cにする除冷工程P2と、この除冷工程P2で除冷され
たなましばね材1cにプレス処理を施して複数の原ばね
1dを得るプレス工程P3と、このプレス工程P3で得
られた原ばね1dに曲げ加工を施して雌端子1にする曲
げ工程(成形工程)P4とからなっている。
FIG. 1 is a process diagram showing one embodiment of a method for manufacturing a female terminal according to the present invention. As shown in this process diagram, the female terminal 1 is subjected to a heat treatment step P1 in which the raw spring material 1a before processing is heated to a predetermined temperature and heat-treated to form a heat-treated spring material 1b. Annealed spring material 1 after cooling the heat-treated spring material 1b to room temperature.
c, a press process P3 for performing a press process on the anneal spring material 1c that has been cooled in the cool process P2 to obtain a plurality of original springs 1d, and a press process P3 obtained in the press process P3. A bending step (forming step) P4 in which the original spring 1d is bent to form the female terminal 1 is formed.

【0017】本実施形態においては、原ばね材1aとし
てばね性を有する銅の合金が採用されている。この銅の
合金が0.1〜1mmの薄い板状に圧延されて原ばね材
1aが形成されている。かかる原ばね材1aが、熱処理
工程P1で均熱炉2に装填され、所定の温度(銅合金が
6−4黄銅の場合は430〜590℃、7−3黄銅の場
合は430℃〜700℃)で所定時間焼鈍されることに
より熱処理ばね材1bとされる。かかる焼鈍温度は、金
属の結晶が熱により再結晶する温度であり、原ばね材1
aは、この温度環境に所定時間放置されることにより、
結晶粒が成長拡大して加工容易性が向上する。焼鈍時間
については銅合金の種類によって異なるが、例えば銅合
金が6−4黄銅の場合は30〜60分、7−3黄銅の場
合も30〜60分が好適である。
In this embodiment, a copper alloy having spring properties is employed as the original spring material 1a. This copper alloy is rolled into a thin plate having a thickness of 0.1 to 1 mm to form a raw spring material 1a. Such a raw spring material 1a is charged into the soaking furnace 2 in the heat treatment process P1, and has a predetermined temperature (430 to 590C when the copper alloy is 6-4 brass, 430C to 700C when the copper alloy is 7-3 brass). ) To form a heat-treated spring material 1b. The annealing temperature is a temperature at which the crystal of the metal is recrystallized by heat.
a is left in this temperature environment for a predetermined time,
The crystal grains grow and expand, and the processability is improved. Although the annealing time varies depending on the type of the copper alloy, for example, 30 to 60 minutes when the copper alloy is 6-4 brass and 30 to 60 minutes when the copper alloy is 7-3 brass are preferable.

【0018】ついで、均熱炉2で焼鈍処理が施されるこ
とによって形成した熱処理ばね材1bは、つぎの除冷工
程P2において均熱炉2から取り出されて空気中に放置
され、自然放冷による除冷処理が施され、これによって
熱処理ばね材1bが常温にまで温度低下したなましばね
材1cが得られる。このなましばね材1cは、除冷処理
によって結晶粒が成長拡大した状態のままで冷やされて
いるため、ばね性(引張り強度およびばね限界値)が低
下している代わりに、非常に加工性に優れたものになっ
ている。
Next, the heat-treated spring material 1b formed by performing the annealing treatment in the soaking furnace 2 is taken out of the soaking furnace 2 in the next cooling step P2 and left in the air to be naturally cooled. , Whereby the heat-treated spring material 1b is cooled to room temperature to obtain an annealed spring material 1c. This annealed spring material 1c is cooled while the crystal grains are grown and expanded by the cooling treatment, so that the spring property (tensile strength and spring limit value) is lowered, but the workability is extremely high. It has become excellent.

【0019】このようにして得られたなましばね材1c
は、つぎのプレス工程P3において、所定のプレスマシ
ン3によって打ち抜き処理され、1度のプレス処理で1
枚のなましばね材1c当り多数の原ばね1dが打ち抜か
れる。このようにして得られた原ばね1dは、つぎの曲
げ工程P4において所定の加工マシン4に逐一供給さ
れ、この加工マシン4で所定の部位に曲げ加工が施され
て雌端子1が形成される。そして、曲げ加工が施された
ばねの部分は、弾性変形の領域を越えた塑性変形の領域
において、変形量の増加につれた転移線の林立で曲折位
置が硬くなる、いわゆる加工硬化によって弾性力が増大
し、ばねとしての機能が付与された状態になる。
The smoothed spring material 1c thus obtained
Is punched out by a predetermined press machine 3 in the next press step P3, and one press
A large number of original springs 1d are punched out per one sheet spring material 1c. The original spring 1d thus obtained is supplied one by one to a predetermined processing machine 4 in the next bending step P4, and a predetermined portion is bent by the processing machine 4 to form the female terminal 1. . In the area of plastic deformation beyond the area of elastic deformation, the bent part of the spring is hardened at the bending position of the transition line as the amount of deformation increases, the elastic force increases due to so-called work hardening As a result, a state in which a function as a spring is provided is obtained.

【0020】そして、本発明においては、原ばね1dに
対して施される曲げ加工は、最終的に得られる端子用ば
ねが使用時に弾性変形させられる方向と同一の方向に向
けて行われる。
In the present invention, the bending process performed on the original spring 1d is performed in the same direction as the direction in which the finally obtained terminal spring is elastically deformed during use.

【0021】なお、本発明にかかる雌端子は、上記のよ
うな方法で製造されることに限定されるものではなく、
最初の原料として平板状の原ばね材1aに代えて、所定
幅寸法の長尺のテープ状ばね材(条材)を渦巻き状に巻
成した原料ロールを用い、この原料ロールに熱処理工程
P1における熱処理、除冷工程P2における除冷処理を
上記同様に施し、プレス工程P3において原料ロールか
ら条材を引き出しつつプレス処理が施されることにより
原ばね1dを製造するようにしてもよい。かかる製造方
法を採用することにより、雌端子1を連続的に製造する
ことが可能になる。
It should be noted that the female terminal according to the present invention is not limited to being manufactured by the method as described above.
A raw material roll obtained by spirally winding a long tape-shaped spring material (strip) having a predetermined width in place of the flat raw spring material 1a as the first raw material is used in the heat treatment step P1. The heat treatment and the cooling process in the cooling process P2 may be performed in the same manner as described above, and the raw spring 1d may be manufactured by performing the pressing process while pulling out the strip from the raw material roll in the pressing process P3. By adopting such a manufacturing method, the female terminal 1 can be manufactured continuously.

【0022】以下、このような工程を経ることによって
得られた端子用ばねが良好なばね性を備えるようになる
理由について図2を基に説明する。図2は、金属材料の
応力−歪み曲線を一般的に例示するグラフであり、横軸
に歪み量を、縦軸に応力を設定している。このグラフに
示すように、通常、金属材料には、所定の歪み量に到達
するまでは歪み量と応力とが比例関係にある弾性領域
と、歪み量が大きくなることにより歪み量と応力との間
の比例係数が極端に小さくなる塑性領域とが存在する。
Hereinafter, the reason why the terminal spring obtained through these steps will have good spring properties will be described with reference to FIG. FIG. 2 is a graph generally illustrating a stress-strain curve of a metal material, in which a horizontal axis indicates a strain amount and a vertical axis indicates stress. As shown in this graph, usually, in a metal material, an elastic region in which the strain amount and the stress are in a proportional relationship until the predetermined strain amount is reached, and the distortion amount and the stress due to the increase in the strain amount. There is a plastic region where the proportionality coefficient between them becomes extremely small.

【0023】そして、弾性領域においては、図2のグラ
フに示すように、歪み量が「0」の原点Oから点Aまで
は、所定の勾配で歪み量に比例して応力が増加するが、
点Aを過ぎると、それ以後は歪み量が増加しても応力の
増加が極端に少なくなる塑性領域に入り、歪み量の増加
に応じて応力は点B、点Cと推移する。そして、この推
移の過程で加工硬化が起こるため、例えば金属材料に点
Bまで折り曲げ加工を施してから曲げ加工の力を抜く
と、点Aを通ることなく応力が「0」の点Cに戻る。
In the elastic region, as shown in the graph of FIG. 2, the stress increases from the origin O where the strain amount is “0” to the point A in proportion to the strain amount at a predetermined gradient.
After the point A, after that, even if the amount of strain increases, the stress enters a plastic region where the increase in stress is extremely small, and the stress changes to points B and C in accordance with the increase in the amount of strain. Then, since work hardening occurs in the course of this transition, for example, if the metal material is bent to point B and then the bending force is released, the stress returns to point C where the stress is “0” without passing through point A. .

【0024】そして、この点Cに戻った金属材料は、す
でに加工硬化した状態になって弾性領域が増大する(O
A→CB)。従って、この加工硬化した金属材料を再度
同一方向に曲げると、今度は金属材料が点Cと点Bとの
間で弾性変形するようになるため、弾性領域内での最大
応力が元の金属材料の点Aから加工硬化後の点Bに増加
している分、金属材料はばね性が向上することになる。
The metal material which has returned to the point C is already in a work-hardened state and the elastic region increases (O
A → CB). Therefore, if the work-hardened metal material is bent again in the same direction, the metal material will be elastically deformed between the point C and the point B, so that the maximum stress in the elastic region is reduced to the original metal material. The metal material has improved spring properties as much as it increases from point A to point B after work hardening.

【0025】因みに、加工硬化した金属材料を、曲げ加
工の曲げ方向と反対側に変位させると、弾性変形は点A
より低レベルの点Eで終わり、以後は点Dより低位の点
Fに向かうように塑性変形するため、曲げ方向と逆の方
向に変位させるとばね性能は逆に低下することになる。
従って、加工硬化した金属材料を、ばねとして曲げ方向
と逆の方向に変位させるような用い方は不適である。
By the way, when the work-hardened metal material is displaced in the direction opposite to the bending direction of the bending, the elastic deformation is at the point A.
It ends at a lower level point E and thereafter plastically deforms toward a point F, which is lower than the point D, so that when displaced in a direction opposite to the bending direction, the spring performance is reduced.
Therefore, it is unsuitable to use the work-hardened metal material as a spring to displace it in the direction opposite to the bending direction.

【0026】図3は、このような工程を経て製造された
雌端子1の一実施形態を示す斜視図である。この図に示
すように、雌端子1は、前後方向に延びた角筒状の雌端
子本体11と、この雌端子本体11の二重底板の1枚が
後方に向かって折り返されることによって入口側に形成
した舌片12を備えて形成されている。かかる雌端子1
の舌片12側には雄端子を受け入れるための開口10が
形成されている。
FIG. 3 is a perspective view showing one embodiment of the female terminal 1 manufactured through such steps. As shown in this figure, the female terminal 1 has a square cylindrical female terminal main body 11 extending in the front-rear direction, and one of the double bottom plates of the female terminal main body 11 is folded back toward the entrance side. The tongue piece 12 is formed. Such female terminal 1
An opening 10 for receiving a male terminal is formed on the tongue piece 12 side.

【0027】かかる雌端子1は、舌片(ばね接点部)1
2に、上記曲げ工程P4で曲げ加工が施されることによ
り形成された円弧状曲折部13を有しており、この円弧
状曲折部13は、加工硬化によってばね性能が向上した
状態になっているため、舌片12に下方に向かう力が加
わった状態で、円弧状曲折部13はその曲率半径が小さ
くなる方向に弾性変形する。
The female terminal 1 includes a tongue piece (spring contact portion) 1
2 has an arc-shaped bent portion 13 formed by performing a bending process in the bending step P4, and the arc-shaped bent portion 13 is in a state where spring performance is improved by work hardening. Therefore, when a downward force is applied to the tongue piece 12, the arc-shaped bent portion 13 is elastically deformed in a direction in which the radius of curvature becomes smaller.

【0028】図4は、上記のような雌端子1が用いられ
たコネクタの一実施形態を示す断面図であり、(イ)は
雄端子が雌端子に接続される直前の状態、(ロ)は雄端
子が雌端子に接続されつつある状態、(ハ)は雄端子が
雌端子に接続された状態をそれぞれ示している。
FIG. 4 is a cross-sectional view showing an embodiment of the connector using the female terminal 1 as described above. FIG. 4A shows a state immediately before the male terminal is connected to the female terminal, and FIG. Indicates a state in which the male terminal is being connected to the female terminal, and (c) indicates a state in which the male terminal is connected to the female terminal.

【0029】図4に示すように、コネクタは、先に図3
を基に説明した雌端子1に雌端子側ハウジング14が被
せられて形成した雌コネクタ6と、この雌コネクタ6に
接続される雄コネクタ5とからなっている。雄コネクタ
5は、ホルダー51と、このホルダー51の端面から同
心で突設された棒状の雄端子52と、これらホルダー5
1および雄端子52を収納した雄端子側ハウジング53
とからなっている。雄端子側ハウジング53の先端側に
は雄端子52を収納し、かつ、上記雌端子側ハウジング
14に嵌まり込む嵌合室53aが形成されている。
As shown in FIG. 4, the connector is
And a female connector 6 formed by covering the female terminal 1 with a female terminal side housing 14 described above, and a male connector 5 connected to the female connector 6. The male connector 5 includes a holder 51, a bar-shaped male terminal 52 protruding concentrically from an end face of the holder 51,
1 and male terminal side housing 53 containing male terminal 52
It consists of A fitting chamber 53 a that houses the male terminal 52 and fits into the female terminal housing 14 is formed at the distal end side of the male terminal housing 53.

【0030】かかるコネクタによれば、図4の(イ)に
示すように、雄端子52の先端を雌端子1の開口10に
対向させた状態で、雄端子側ハウジング53を雌端子側
ハウジング14に外嵌することにより、まず、雄端子5
2bの先端が、図4の(ロ)に示すように、舌片12を
遣り過ごし、これによって舌片12が下方に向けて押圧
され、端子用ばね1の円弧状曲折部13(図3)は、曲
率半径が小さくなる方向に弾性変形する。
According to such a connector, as shown in FIG. 4A, the male terminal side housing 53 is connected to the female terminal side housing 14 with the male terminal 52 facing the opening 10 of the female terminal 1. First, the male terminal 5
As shown in FIG. 4 (b), the tip of 2b overshoots the tongue piece 12, whereby the tongue piece 12 is pressed downward, and the arcuate bent portion 13 of the terminal spring 1 (FIG. 3) Is elastically deformed in a direction in which the radius of curvature decreases.

【0031】この状態で雄端子側ハウジング53をさら
に雌端子側ハウジング14に押し込むと、図4の(ハ)
に示すように、雄端子52は、その根本部分が弾性変形
している円弧状曲折部13の弾性力によって舌片12に
押圧された状態になる。そして、舌片12の円弧状曲折
部13は、加工硬化でばね性が向上しているため、雄端
子51と雌端子1との間の接続状態は、より安定したも
のになる。
When the male terminal side housing 53 is further pushed into the female terminal side housing 14 in this state, (c) in FIG.
As shown in (1), the male terminal 52 is pressed against the tongue piece 12 by the elastic force of the arcuate bent portion 13 whose root portion is elastically deformed. Then, the arc-shaped bent portion 13 of the tongue piece 12 has improved spring property due to work hardening, so that the connection state between the male terminal 51 and the female terminal 1 becomes more stable.

【0032】[0032]

【発明の効果】請求項1記載の発明によれば、原ばね材
を熱処理工程で熱処理することによって形成した熱処理
ばね材は、つぎの除冷工程でなまされてなましばね材に
なり、このなましばね材は塑性変形がし易くなっている
ため、つぎの曲げ工程で容易に塑性変形させることによ
って所定のばね形状に成形することができる。そして、
曲げ工程で得られた端子用ばねは、その曲折位置が、塑
性変形の増加につれた転移線の林立で硬くなる、いわゆ
る加工硬化によって弾性力が増大するため、ばねとして
の機能を確実に付与されたものにすることができる。
According to the first aspect of the present invention, the heat-treated spring material formed by heat-treating the original spring material in the heat treatment step is annealed in the next cooling step to become an annealed spring material. Since this annealing spring material is easily plastically deformed, it can be formed into a predetermined spring shape by easily plastically deforming in the next bending step. And
The terminal spring obtained in the bending process has its bending position hardened by a transition line formed by an increase in plastic deformation, and the elastic force increases by so-called work hardening. Can be.

【0033】このように、原ばね材を一旦熱処理してか
ら除冷し、引き続き曲げ加工を行うようにしているた
め、従来のように曲げ加工が行い難いばね材にそのまま
の状態で曲げ処理を施す場合に比べて、良好な加工性を
確保した上で優れたばね性能を有する端子用ばねを得る
ことができる。
As described above, since the original spring material is once heat-treated, then cooled, and then subjected to the bending process, the bending process is performed on the spring material which is difficult to be bent as it is conventionally. Compared with the case of applying, it is possible to obtain a terminal spring having excellent spring performance while ensuring good workability.

【0034】請求項2記載の発明によれば、熱処理工程
における所定の温度を原ばね材の金属組織が再結晶を行
う再結晶温度に設定したため、原ばね材は、再結晶温度
で熱処理されることにより結晶粒が成長拡大して軟化
し、これによって原ばね材をより曲げ加工がし易いもの
にすることができる。
According to the second aspect of the present invention, since the predetermined temperature in the heat treatment step is set to the recrystallization temperature at which the metal structure of the original spring material recrystallizes, the original spring material is heat-treated at the recrystallization temperature. As a result, the crystal grains grow and expand and soften, whereby the original spring material can be more easily bent.

【0035】請求項3記載の発明によれば、原料材に対
してばね接点部の弾性変形の方向と同一方向に曲げ加工
を施すようにしたため、端子用ばねの弾性変形の方向に
向かうばね性能を向上させることができる。
According to the third aspect of the invention, since the raw material is bent in the same direction as the elastic deformation direction of the spring contact portion, the spring performance of the terminal spring in the elastic deformation direction is improved. Can be improved.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係る端子用ばねの製造方法の一実施形
態を示す工程図である。
FIG. 1 is a process diagram showing one embodiment of a method for manufacturing a terminal spring according to the present invention.

【図2】金属材料の応力−歪み曲線を一般的に例示する
グラフである。
FIG. 2 is a graph generally illustrating a stress-strain curve of a metal material.

【図3】端子用ばねの一実施形態を示す斜視図である。FIG. 3 is a perspective view showing an embodiment of a terminal spring.

【図4】端子用ばねが装着されたコネクタの一実施形態
を示す断面図であり、(イ)は雄端子が雌端子に接続さ
れる直前の状態、(ロ)は雄端子が雌端子に接続されつ
つある状態、(ハ)は雄端子が雌端子に接続された状態
をそれぞれ示している。
FIG. 4 is a cross-sectional view showing an embodiment of a connector to which a terminal spring is mounted, (a) is a state immediately before a male terminal is connected to a female terminal, and (b) is a male terminal is a female terminal. (C) shows a state in which the male terminal is connected to the female terminal.

【符号の説明】[Explanation of symbols]

1 端子用ばね 1a 原ばね材 1b 熱処理ばね材 1c なましばね材 1d 原ばね P1 熱処理工程 P2 除冷工程 P3 プレス工程 P4 曲げ工程 DESCRIPTION OF SYMBOLS 1 Terminal spring 1a Original spring material 1b Heat-treated spring material 1c Annealed spring material 1d Original spring P1 Heat treatment process P2 Cooling process P3 Press process P4 Bending process

───────────────────────────────────────────────────── フロントページの続き (72)発明者 塩谷 準 愛知県名古屋市南区菊住1丁目7番10号 株式会社ハーネス総合技術研究所内 Fターム(参考) 5E063 GA05  ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Jun Shioya 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi F-term in Harness Research Institute, Inc. (reference) 5E063 GA05

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 雄端子の挿入方向に対して後ろに湾曲さ
せたばね接点部を有する雌端子の製造方法であって、加
工前の原ばね材を所定の温度まで加熱して熱処理するこ
とにより熱処理ばね材にする熱処理工程と、この熱処理
工程で熱処理された熱処理ばね材を常温まで除冷してな
ましばね材にする除冷工程と、この除冷工程で除冷され
たなましばね材に曲げ加工を施して上記ばね接点部を備
えた雌端子にする曲げ工程とからなることを特徴とする
雌端子の製造方法。
1. A method for manufacturing a female terminal having a spring contact portion curved backward in the insertion direction of a male terminal, wherein the raw spring material before processing is heated to a predetermined temperature and heat-treated. A heat treatment step for forming a spring material, a cooling step for cooling the heat-treated spring material heat-treated in this heat treatment step to room temperature to form an annealed spring material, and a heat-treated spring material which has been cooled in the cooling step. Bending the female terminal having the spring contact portion by performing a bending process.
【請求項2】 上記熱処理工程における所定の温度は、
上記原ばね材の金属組織が再結晶を行う再結晶温度であ
ることを特徴とする請求項1記載の雌端子の製造方法。
2. The predetermined temperature in the heat treatment step,
2. The method according to claim 1, wherein the metal structure of the original spring material is a recrystallization temperature at which recrystallization is performed.
【請求項3】 上記原料材に対してばね接点部の弾性変
形の方向と同一方向に曲げ加工を施すことを特徴とする
請求項1または2記載の雌端子の製造方法。
3. The method for manufacturing a female terminal according to claim 1, wherein the raw material is bent in the same direction as the elastic deformation direction of the spring contact portion.
JP11186597A 1999-06-30 1999-06-30 Manufacture of female terminal Withdrawn JP2001015244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11186597A JP2001015244A (en) 1999-06-30 1999-06-30 Manufacture of female terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11186597A JP2001015244A (en) 1999-06-30 1999-06-30 Manufacture of female terminal

Publications (1)

Publication Number Publication Date
JP2001015244A true JP2001015244A (en) 2001-01-19

Family

ID=16191351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11186597A Withdrawn JP2001015244A (en) 1999-06-30 1999-06-30 Manufacture of female terminal

Country Status (1)

Country Link
JP (1) JP2001015244A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7146731B2 (en) * 2003-01-07 2006-12-12 Disney Enterprises, Inc. Snapping and hinging arrangements, watches and associated methods
JP2010257793A (en) * 2009-04-24 2010-11-11 Panasonic Electric Works Co Ltd Electric connection terminal device for signal and method of manufacturing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7146731B2 (en) * 2003-01-07 2006-12-12 Disney Enterprises, Inc. Snapping and hinging arrangements, watches and associated methods
JP2010257793A (en) * 2009-04-24 2010-11-11 Panasonic Electric Works Co Ltd Electric connection terminal device for signal and method of manufacturing the same

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