JP3186139U - Contact pin - Google Patents

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JP3186139U
JP3186139U JP2013003945U JP2013003945U JP3186139U JP 3186139 U JP3186139 U JP 3186139U JP 2013003945 U JP2013003945 U JP 2013003945U JP 2013003945 U JP2013003945 U JP 2013003945U JP 3186139 U JP3186139 U JP 3186139U
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contact pin
joining member
free
joining
stranded wire
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修一 安藤
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東北精密株式会社
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Abstract

【課題】高温、高真空、振動等の厳しい環境下で大電流を供給することができるコンタクトピンであって、摩擦圧接により部材製作後は特殊な設備を必要とせず、手軽な接合で必要な接合強度を得ることができるコンタクトピンを提供する。
【解決手段】快削黄銅からなるコンタクトピン本体2と、該コンタクトピン本体2の端部に摩擦圧接により接合された無酸素銅からなる接合部材4と、該接合部材4に設けられた挿入孔6に一端が挿入されて圧着された銅撚り線3と、を備えた、コンタクトピン1。
【選択図】図1
[PROBLEMS] A contact pin capable of supplying a large current in a severe environment such as high temperature, high vacuum, vibration, etc., and requires no special equipment after the manufacture of a member by friction welding, and is required for easy joining. Provided is a contact pin capable of obtaining bonding strength.
A contact pin body 2 made of free-cutting brass, a joining member 4 made of oxygen-free copper joined to an end of the contact pin body 2 by friction welding, and an insertion hole provided in the joining member 4 A contact pin 1, comprising a copper stranded wire 3 having one end inserted into and crimped on 6.
[Selection] Figure 1

Description

本考案は、コンタクトピンに係り、特に高温、高真空、振動等の厳しい環境下での大電流の供給を可能とする技術に関するものである。   The present invention relates to a contact pin, and more particularly to a technology that enables a large current to be supplied in a severe environment such as high temperature, high vacuum, and vibration.

通電部品の一つとしてコンタクトピンが知られている(例えば、特許文献1参照)。コンタクトピンは、通常、コンタクトピン本体の基部にワイヤを半田付けして構成されている。そのため、このようなコンタクトピンは、高温、高真空、振動等の厳しい環境下で大電流を供給する場合に使用することが困難であった。   A contact pin is known as one of the current-carrying parts (see, for example, Patent Document 1). The contact pin is usually configured by soldering a wire to the base of the contact pin body. Therefore, it is difficult to use such a contact pin when supplying a large current in a severe environment such as high temperature, high vacuum, and vibration.

そこで、前記環境下で大電流を安定して供給する場合に適用し得るコンタクトピンとして、コンタクトピン本体を摩擦抵抗が少なく、電気抵抗値が低い快削黄銅により形成し、このコンタクトピン本体に銅撚り線を接合した構造とする研究がなされている。   Therefore, as a contact pin that can be applied when a large current is stably supplied in the above environment, the contact pin body is made of free-cutting brass having a low frictional resistance and a low electrical resistance value. Research has been conducted on a structure in which twisted wires are joined.

ところが、快削黄銅は、大きな力が加わると、割れを生じやすいため、圧着という接合方法を採用することが難しい。このため、快削黄銅の接合方法としては、レーザによる接合方法や抵抗溶接による接合方法を採用せざるを得なかった。   However, since free-cutting brass is susceptible to cracking when a large force is applied, it is difficult to employ a joining method called crimping. For this reason, as a joining method of free-cutting brass, a joining method by laser or a joining method by resistance welding had to be adopted.

特開2002−286779号公報JP 2002-286777 A

しかしながら、これらのレーザによる接合方法や抵抗溶接による接合方法では、専用の設備を必要とするため、手軽に接合を行うことができないだけでなく、必要な接合強度を得ることも難しい場合があり、品質にバラツキが生じるという課題があった。また、熱による接合では銅撚り線に酸化が生じ、脆くなることや快削黄銅との合金ができてしまうという課題もあった。   However, these laser joining methods and resistance welding joining methods require dedicated equipment, so not only can not be easily joined, it may be difficult to obtain the necessary joint strength, There was a problem that the quality varied. In addition, in the joining by heat, there has been a problem that the copper stranded wire is oxidized and becomes brittle and an alloy with free-cutting brass is formed.

本考案の目的は、高温、高真空、振動等の厳しい環境下でも大電流を供給することができるコンタクトピンであって、摩擦圧接により部材製作後は特殊な設備を必要とせず、手軽な接合で必要な接合強度を得ることができ、且つ酸化のないコンタクトピンを提供することである。   The purpose of the present invention is a contact pin that can supply a large current even under harsh environments such as high temperature, high vacuum, and vibration. Thus, it is possible to provide a contact pin which can obtain a necessary bonding strength and is free from oxidation.

本考案は、快削黄銅からなるコンタクトピン本体と、該コンタクトピン本体の端部に摩擦圧接により接合された無酸素銅からなる接合部材と、該接合部材に設けられた挿入孔に一端が挿入されて圧着された銅撚り線と、を備えた、コンタクトピンである。   The present invention includes a contact pin body made of free-cutting brass, a joining member made of oxygen-free copper joined to the end of the contact pin body by friction welding, and one end inserted into an insertion hole provided in the joining member And a copper stranded wire that has been crimped.

前記コンタクトピン本体に端子部が形成されることが好ましい。   It is preferable that a terminal portion is formed on the contact pin body.

本考案によれば、高温、高真空、振動等の厳しい環境下でも大電流を供給することができるコンタクトピンであって、摩擦圧接により部材製作後は特殊な設備を必要とせず、手軽な接合で必要な接合強度を得ることができ、且つ酸化のないコンタクトピンを提供することができる。   According to the present invention, a contact pin that can supply a large current even under severe conditions such as high temperature, high vacuum, vibration, etc., and does not require special equipment after manufacturing the member by friction welding, and can be easily joined Thus, the necessary bonding strength can be obtained, and a contact pin without oxidation can be provided.

本考案に係るコンタクトピンの実施の形態を示す側面図である。It is a side view which shows embodiment of the contact pin which concerns on this invention. コンタクトピンを形成する金属棒を示す側面図である。It is a side view which shows the metal bar which forms a contact pin. 金属棒の加工状態を示す図で、(a)は平面図、(b)は一端に形成された撚り線挿入孔側の端面図である。It is a figure which shows the processing state of a metal bar, (a) is a top view, (b) is an end elevation by the side of the strand wire insertion hole formed in the end. 金属棒の撚り線挿入孔に銅撚り線を挿入して圧着した状態を示す平面である。It is a plane which shows the state which inserted and crimped | bonded the copper strand wire in the strand wire insertion hole of a metal rod. 図4のA−A線拡大断面図である。It is the AA line expanded sectional view of FIG. 銅撚り線の両端部にコンタクトピンを取付けた実施の形態を示す側面図である。It is a side view which shows embodiment which attached the contact pin to the both ends of a copper strand.

以下、本考案の実施の形態について、図1〜図6を用いて詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.

図1において、1はコンタクトピンであり、このコンタクトピン1は、快削黄銅からなるコンタクトピン本体2と、このコンタクトピン本体2の端部に摩擦圧接により接合され、銅撚り線3を接合するための無酸素銅(高純度銅)からなる接合部材4とを有している。   In FIG. 1, reference numeral 1 denotes a contact pin. The contact pin 1 is joined to a contact pin main body 2 made of free-cutting brass and an end of the contact pin main body 2 by friction welding, and a copper stranded wire 3 is joined. And a joining member 4 made of oxygen-free copper (high-purity copper).

コンタクトピン本体2及び接合部材4は、図2に示すように共に同一径の丸棒状に形成されている。すなわち、コンタクトピン本体2及び接合部材4は、それぞれの素材である快削黄銅からなるコンタクトピン本体用丸棒20と、無酸素銅からなる接合部材用丸棒40とからなっている。コンタクトピン本体用丸棒20と、接合部材用丸棒40とは、端部同士が摩擦圧接により接合されている。すなわち、コンタクトピン本体用丸棒20と、接合部材用丸棒40との間には摩擦圧接による金属同士が拡散接合した接合部5が形成されている。   The contact pin body 2 and the joining member 4 are both formed in a round bar shape having the same diameter as shown in FIG. That is, the contact pin body 2 and the joining member 4 are composed of a contact pin body round bar 20 made of free-cutting brass, which is a raw material, and a joining member round bar 40 made of oxygen-free copper. The ends of the contact pin main body round bar 20 and the joining member round bar 40 are joined by friction welding. That is, between the contact pin main body round bar 20 and the joining member round bar 40, there is formed a joining portion 5 in which metals are joined by diffusion welding by friction welding.

接合部材用丸棒40は、図3の(a)に示すように接合部材4の所定の長さLを残して切徐される。接合部材4の長さLは、銅撚り線3を圧着し得る長さとされている。   As shown in FIG. 3A, the joining member round bar 40 is gradually cut while leaving a predetermined length L of the joining member 4. The length L of the joining member 4 is set to a length capable of crimping the copper stranded wire 3.

この接合部材4には、図3の(b)に示すように銅撚り線3の一端を挿入するための挿入孔6が設けられる。この挿入孔6は、例えばドリル等による穴加工によって形成される。挿入孔6は、接合部材4の長さLの範囲内で形成される。挿入孔6は、銅撚り線3を挿入し得る内径とされている。   The joining member 4 is provided with an insertion hole 6 for inserting one end of the copper stranded wire 3 as shown in FIG. The insertion hole 6 is formed, for example, by drilling with a drill or the like. The insertion hole 6 is formed within the range of the length L of the joining member 4. The insertion hole 6 has an inner diameter into which the copper stranded wire 3 can be inserted.

図1に示すように、コンタクトピン本体2の先端側には先の尖った端子部8が例えば切削加工により形成される。コンタクトピン本体2は、快削黄銅からなるため、切削加工により容易に加工することが可能である。   As shown in FIG. 1, a pointed terminal portion 8 is formed on the distal end side of the contact pin main body 2 by, for example, cutting. Since the contact pin body 2 is made of free-cutting brass, it can be easily processed by cutting.

図4に示すように接合部材4の挿入孔6に銅撚り線3の一端部を挿入したなら、図5に示すように接合部材4を圧着工具や圧着機を用いて径方向外方の例えば上下方向から押圧して押し潰すことにより接合部材4に銅撚り線3の一端部が圧着される。   If one end portion of the copper stranded wire 3 is inserted into the insertion hole 6 of the joining member 4 as shown in FIG. 4, the joining member 4 is used, for example, radially outward using a crimping tool or a crimping machine as shown in FIG. One end portion of the copper stranded wire 3 is pressure-bonded to the joining member 4 by pressing and crushing from the vertical direction.

図1,図4において、接合部材4には圧着接合時の押圧痕7が形成されている。圧着機を使用することにより、接合部材4における接合状態のばらつきを少なくすることができ、銅撚り線3を迅速且つ高品質で圧着接合することができる。   1 and 4, a pressing mark 7 at the time of pressure bonding is formed on the bonding member 4. By using a crimping machine, it is possible to reduce the variation in the joining state of the joining member 4 and to crimp and join the copper stranded wire 3 quickly and with high quality.

以上の構成からなるコンタクトピン1は、快削黄銅からなるコンタクトピン本体2と、コンタクトピン本体2の端部に摩擦圧接により接合された無酸素銅からなる接合部材4と、接合部材4に設けられた挿入孔6に一端が挿入されて圧着された銅撚り線3と、を備えている。そのため、このコンタクトピン1によれば、高温、高真空、振動等の厳しい環境下で大電流を供給することができるコンタクトピン1を得ることができると共に、手軽な接合が可能であり、必要な接合強度を得ることができるコンタクトピン1を提供することができる。   The contact pin 1 configured as described above is provided on the contact pin body 2 made of free-cutting brass, the joining member 4 made of oxygen-free copper joined to the end of the contact pin body 2 by friction welding, and the joining member 4 A copper stranded wire 3 having one end inserted into the inserted insertion hole 6 and crimped. Therefore, according to the contact pin 1, it is possible to obtain the contact pin 1 capable of supplying a large current under severe environments such as high temperature, high vacuum, vibration, etc., and easy joining is possible. The contact pin 1 that can obtain the bonding strength can be provided.

すなわち、圧着の品質を維持するために接合部材4の材料として無酸素銅が選定されている。この無酸素銅からなる接合部材4を快削黄銅からなるコンタクトピン本体2に摩擦圧接により接合したことにより、快削黄銅からなるコンタクトピン本体2と銅撚り線3とを容易に接合することが可能になった。   That is, oxygen-free copper is selected as the material of the joining member 4 in order to maintain the quality of the crimping. By joining the joining member 4 made of oxygen-free copper to the contact pin body 2 made of free-cutting brass by friction welding, the contact pin body 2 made of free-cutting brass and the copper stranded wire 3 can be easily joined. It became possible.

図2は、コンタクトピン本体用丸棒20の端部に接合部材用丸棒40を摩擦圧接により接合した状態を示している。コンタクトピン本体用丸棒20と接合部材用丸棒40とは、摩擦圧接により容易に接合することができる。接合部5に関しては、接合欠陥等がなく、良好な接合状態を得ることができる。そして、図3の(a)に示すように、接合部材用丸棒40を所定の長さLに切断し、コンタクトピン本体2に端子部8を切削加工により形成することにより、コンタクトピン1を容易に製作することができる。   FIG. 2 shows a state where the joining member round bar 40 is joined to the end of the contact pin main body round bar 20 by friction welding. The contact pin main body round bar 20 and the joining member round bar 40 can be easily joined by friction welding. With respect to the bonding portion 5, there is no bonding defect or the like, and a good bonding state can be obtained. Then, as shown in FIG. 3A, the joining member round bar 40 is cut to a predetermined length L, and the terminal portion 8 is formed in the contact pin main body 2 by cutting, whereby the contact pin 1 is formed. It can be easily manufactured.

更に、接合部材4に銅撚り線3の一端を挿入する挿入孔6が設けられているため、接合部材4の挿入孔6に銅撚り線3の一端を挿入して接合部材4を径方向に圧縮変形させることにより接合部材4に銅撚り線3を容易に圧着することができる。従って、快削黄銅からなるコンタクトピン本体2を圧縮変形する必要が無いので、快削黄銅が割れる虞がなく、コンタクトピン1の耐久性及び安全性の向上を図ることができる。   Furthermore, since the insertion hole 6 for inserting one end of the copper stranded wire 3 is provided in the joining member 4, one end of the copper stranded wire 3 is inserted into the insertion hole 6 of the joining member 4 so that the joining member 4 is moved in the radial direction. The copper stranded wire 3 can be easily crimped to the joining member 4 by compressing and deforming. Therefore, there is no need to compress and deform the contact pin main body 2 made of free-cutting brass, so there is no possibility that the free-cutting brass will break, and the durability and safety of the contact pin 1 can be improved.

レーザや抵抗溶接により施工する、快削黄銅からなるコンタクトピンと銅撚り線の接合品は、撚り線であるが故に接合条件や接合構造に制約がある。この為、必要とされる引張強度(例えば、10kg/mm以上の安定した強度)が得られなかった。また、抵抗溶接の場合には剥離に弱いという欠点もあった。 Since a contact pin made of free-cutting brass and a copper stranded wire, which is constructed by laser or resistance welding, is a stranded wire, there are restrictions on the bonding conditions and the bonding structure. For this reason, the required tensile strength (for example, a stable strength of 10 kg / mm 2 or more) could not be obtained. In addition, resistance welding has a drawback of being vulnerable to peeling.

これに対し、接合部材4における銅撚り線3の圧着では、15kg/mmの引張強さが安定して得られ、剥離にも強い構造となった。また、コンタクトピン本体2と接合部材4の接合部5に関しても、引張強さが約32kg/mmであり、十分な強度を有していた。 On the other hand, in the crimping | bonding of the copper strand wire 3 in the joining member 4, the tensile strength of 15 kg / mm < 2 > was obtained stably and it became a structure strong also to peeling. In addition, the joint strength 5 of the contact pin main body 2 and the joining member 4 was about 32 kg / mm 2 and had sufficient strength.

図6は、銅撚り線3の両端部にコンタクトピン1,1を取付けた実施の形態を示す側面図である。本実施の形態では、銅撚り線3の一方の端部(左端)に一方のコンタクトピン1が接続され、銅撚り線3の他方の端部(右端)にもう一方のコンタクトピン1が接続されている。   FIG. 6 is a side view showing an embodiment in which contact pins 1 and 1 are attached to both ends of a copper stranded wire 3. In the present embodiment, one contact pin 1 is connected to one end (left end) of the copper stranded wire 3, and the other contact pin 1 is connected to the other end (right end) of the copper stranded wire 3. ing.

図6において、図1に示すコンタクトピン1と同一部分には同一参照符号を付して詳細な説明を省略する。図6のコンタクトピン1によっても、図1のコンタクトピン1と同様の作用効果を得ることができる。   In FIG. 6, the same parts as those of the contact pin 1 shown in FIG. Also with the contact pin 1 of FIG. 6, the same effect as the contact pin 1 of FIG. 1 can be obtained.

本考案は前記実施の形態に限定されるものではなく、その要旨を逸脱しない範囲で種々変更可能であることは言うまでもない。例えば、コンタクトピン本体及び接合部材は、丸棒状に形成される必要はなく、断面四角形や断面六角形等の角棒状に形成されていてもよい。   Needless to say, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, the contact pin main body and the joining member do not need to be formed in a round bar shape, and may be formed in a square bar shape such as a square cross section or a hexagonal cross section.

1 コンタクトピン
2 コンタクトピン本体
3 銅撚り線
4 接合部材
5 接合部
6 挿入孔
7 押圧痕
8 端子部
20 コンタクトピン本体用丸棒
40 接合部材用丸棒
DESCRIPTION OF SYMBOLS 1 Contact pin 2 Contact pin main body 3 Copper stranded wire 4 Joining member 5 Joining part 6 Insertion hole 7 Press mark 8 Terminal part 20 Contact pin main body round bar 40 Joining member round bar

Claims (2)

快削黄銅からなるコンタクトピン本体と、該コンタクトピン本体の端部に摩擦圧接により接合された無酸素銅からなる接合部材と、該接合部材に設けられた挿入孔に一端が挿入されて圧着された銅撚り線と、を備えた、コンタクトピン。   A contact pin main body made of free-cutting brass, a joining member made of oxygen-free copper joined to the end of the contact pin main body by friction welding, and one end inserted into the insertion hole provided in the joining member and crimped A contact pin comprising a copper stranded wire. 前記コンタクトピン本体に端子部が形成された、請求項1記載のコンタクトピン。   The contact pin according to claim 1, wherein a terminal portion is formed on the contact pin body.
JP2013003945U 2013-07-09 2013-07-09 Contact pin Expired - Lifetime JP3186139U (en)

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