JP2700303B2 - Method for manufacturing crimped or compressed terminals - Google Patents
Method for manufacturing crimped or compressed terminalsInfo
- Publication number
- JP2700303B2 JP2700303B2 JP7006918A JP691895A JP2700303B2 JP 2700303 B2 JP2700303 B2 JP 2700303B2 JP 7006918 A JP7006918 A JP 7006918A JP 691895 A JP691895 A JP 691895A JP 2700303 B2 JP2700303 B2 JP 2700303B2
- Authority
- JP
- Japan
- Prior art keywords
- bar
- hole
- plate
- tubular portion
- forming
- 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.)
- Expired - Lifetime
Links
Landscapes
- Manufacturing Of Electrical Connectors (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、たとえば電力用架空電
線におけるテープ巻形屋外終端処理などに用いられる圧
着又は圧縮端子の製造方法に関するものである。The present invention relates are those which relate to the production method of crimping or compression terminal used in such tape winding type outdoor termination in power overhead conductors, for example.
【０００２】[0002]
【従来の技術】この種の圧着又は圧縮端子として、従
来、実開昭５７−１４８７８２号公報に開示されたよう
な構成のものが知られている。この圧着又は圧縮端子
は、図１１に示すように、所定長さに切断された銅や銅
合金よりなる金属管１０１Ａを使用し、この金属管１０
１Ａの長手方向の一端部１０１ａ側を図１２および図１
３に示すように、内部に空間ができないように径方向か
ら押圧して、相手側端子接続用の板状部を形成させると
ともに、この板状部１０１ａにその厚さ方向に貫通する
連結用孔１０２を形成する一方、上記金属管１０１Ａの
長手方向の他端部１０１ｂ側はそのまま導体挿入用の管
状部に構成させ、この管状部１０１ｂの奥端と板状部１
０１ａとの境界となる上記板状部１０１ａの内面に密封
用のろう付け部１０３を形成してなるものである。2. Description of the Related Art As a crimping or compression terminal of this kind, there is conventionally known a structure as disclosed in Japanese Utility Model Laid-Open No. 57-148782. As shown in FIG. 11, a metal tube 101A made of copper or copper alloy cut to a predetermined length is used for the crimping or compression terminal.
FIG. 12 and FIG. 1 show the one end 101a side in the longitudinal direction of FIG.
As shown in FIG. 3, a pressing hole is pressed from the radial direction so that no space is formed inside, thereby forming a plate-shaped portion for connecting the partner terminal, and a connecting hole penetrating through the plate-shaped portion 101a in its thickness direction. On the other hand, the other end 101b side of the metal tube 101A in the longitudinal direction is directly formed into a tubular portion for inserting a conductor, and the inner end of the tubular portion 101b and the plate-like portion 1 are formed.
A brazing portion 103 for sealing is formed on the inner surface of the plate-shaped portion 101a, which is a boundary with 01a.
【０００３】[0003]
【発明が解決しようとする課題】上記した構成の従来の
圧着又は圧縮端子１０１においては、金属管１０１Ａを
使用し、その長手方向の一端部１０１ａ側を径方向から
押圧して板状部を形成するものであるから、この一端部
１０１ａの押圧により密接した部分にきわめて微小なす
ま間が残存しており、確実な水密構造が得られない。そ
の結果、このままで使用する場合は、上記の微小なすき
間から外部の水滴が毛細管現象によって上記板状部１０
１ａの内面を通って管状部１０１ｂの内部に侵入するこ
とがあり、この水滴の侵入によって管状部１０１ｂや導
体の腐食を招きやすく、とくに沿岸地域で使用される場
合は腐食の進行が著しい。また、侵入した水滴の凍結膨
張により上記管状部に割れなどが発生することもある。
このような事態を避けるために、上記従来の圧着又は圧
縮端子１０１においては、上記板状部１０１ａの内面に
わざわざ密封用のろう付け部１０３を形成していたので
あるが、そのろう付け作業は空間的に非常に狭隘な部分
に対して行なわなければならず、多大な手数および熟練
を要し、生産コストの上昇および生産性低下の要因とな
っていた。In the conventional crimping or compression terminal 101 having the above-mentioned structure, a metal tube 101A is used, and one end portion 101a in the longitudinal direction is pressed from the radial direction to form a plate-like portion. Therefore, a very small gap remains in a portion closely contacted by the pressing of the one end portion 101a, and a reliable watertight structure cannot be obtained. As a result, when used as it is, external water droplets are generated from the minute gap by the capillarity and the plate-like portion 10
In some cases, the water enters the interior of the tubular portion 101b through the inner surface of the tubular portion 1a, and the penetration of the water droplets easily causes corrosion of the tubular portion 101b and the conductor. In particular, when used in a coastal area, the corrosion progresses remarkably. Also, cracks and the like may occur in the tubular portion due to the freezing and expansion of the water droplets that have entered.
In order to avoid such a situation, in the conventional crimping or compression terminal 101, a brazing portion 103 for sealing is formed on the inner surface of the plate-shaped portion 101a. It has to be performed on a very narrow space, requiring a great deal of work and skill, and has caused an increase in production cost and a decrease in productivity.
【０００４】本発明は上記実情に鑑みてなされたもの
で、ろう付けのような手間および熟練を要することな
く、板状部と管状部との間を確実に密封にして使用状態
での導体の腐食や管状部の割れなどを確実に防止するこ
とができ、その上、優れた導電特性をもたせることがで
きる圧着又は圧縮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 in view of the above-mentioned circumstances, and does not require time and skill such as brazing, and reliably seals a gap between a plate-shaped portion and a tubular portion. It is an object of the present invention to provide a method for manufacturing a crimped or compressed terminal that can reliably prevent corrosion, cracks in a tubular portion, and the like, and can also have excellent conductive characteristics.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、請求項１の発明に係る圧着又は圧縮端子の製造方法
は、所定長さの銅製中実棒材の長手方向の一端部側にそ
の端面から該棒材の軸心に沿って所定深さの第１の孔を
冷間鍛造により形成する工程と、上記中実棒材の長手方
向の他端部側にその端面から該棒材の軸心に沿って所定
深さを有し、かつ上記第１の孔側には貫通しない第２の
孔を冷間鍛造により形成する工程と、その上面に後端側
開放の棒材逃げ用凹所を有する下金型の上面に上記棒材
を上記第２の孔に対応する管状部が上記凹所上に臨出す
る状態に載置させたうえ、上記棒材の周面の全長に当接
する下面を有する上金型を上記下金型に対して下降させ
ることにより上記棒材における第２の孔に対応する管状
部を上記下金型の凹所に逃がして管状部のまま残しつ
つ、第１の孔に対応する管状部を径方向から押圧し押し
潰して板状部を成形する工程と、上記板状部にその厚さ
方向に貫通する連結用孔を形成する工程と、上記棒材全
体にめっきを施す工程とを備えたものである。In order to achieve the above object, a method for manufacturing a crimping or compression terminal according to the present invention is characterized in that a copper solid bar having a predetermined length is provided on one end side in the longitudinal direction. Forming a first hole having a predetermined depth along the axis of the bar from the end face by cold forging; and forming the first hole from the end face on the other end side of the solid bar in the longitudinal direction. Forming, by cold forging, a second hole having a predetermined depth along the axis of and not penetrating the first hole side, and a rear end side on an upper surface thereof;
On the upper surface of the lower mold having an open bar escape recess,
The tubular portion corresponding to the second hole projects on the recess
And then abut the entire length of the peripheral surface of the bar.
Lowering the upper mold having the lower surface to
The rod corresponding to the second hole in the bar
Part into the recess of the lower mold and leave it as a tubular part.
One, press presses the tubular portion corresponding to the first hole from the radially
The method includes a step of crushing and forming a plate-shaped part, a step of forming a connection hole penetrating the plate-shaped part in a thickness direction thereof, and a step of plating the entire bar.
【０００６】上記のような製造方法において、上記管状
部を径方向から押圧して板状部を形成する前に、棒材を
焼鈍する工程を備えることが望ましい。 In the above-described manufacturing method, it is preferable that the method further includes a step of annealing the bar before pressing the tubular portion from the radial direction to form a plate-like portion .
【０００７】[0007]
【作用】本発明によれば、銅製中実棒材の長手方向の両
端部にそれらの端面から棒材の軸心に沿って所定深さで
互いに貫通しない第１および第２の孔をそれぞれ形成
し、上下の金型により棒材の全長を押圧して該棒材の他
端部側の管状部を下金型上面の凹所に逃がして管状部の
まま残しながら該棒材の一端部側の管状部のみを径方向
から押圧し押し潰して板状部としたものであるから、該
板状部と管状部の奥端には隔壁部が残存することにな
る。このため、上記板状部の内面に密封用ろう付け部な
どを設けるといった手数および熟練を要する作業を行な
わなくとも、水滴などが板状部を通って管状部内に侵入
するおそれが全くなく、屋外での使用状態においても導
体の腐食や侵入水滴の凍結膨張にともなう管状部に割れ
などの発生を確実に防止できる。そのうえ、素材として
銅製の中実棒材を使用することにより、例えば含有酸素
を除去するためにリン等の不純物が混入されている鋳物
用材料を用いる場合に比べて導電率（パーセント導電
率）を高めて電気特性の向上も図ることが可能である。According to the present invention, first and second holes which do not penetrate each other at a predetermined depth along the axis of the bar from their end surfaces are formed at both ends in the longitudinal direction of the solid copper bar. Then, the entire length of the bar is pressed by the upper and lower dies to
To discharge tubular portion of the end portion in the recess of the lower mold upper surface of the tube-shaped portion
Since only the tubular portion on one end side of the bar is pressed and crushed in the radial direction to leave a plate-like portion while leaving the same, a partition wall portion remains at the far end of the plate-like portion and the tubular portion. Will be. For this reason, even if it is not necessary to perform a work requiring skill and skill, such as providing a brazing portion for sealing on the inner surface of the plate-shaped portion, there is no possibility that water droplets or the like will enter the tubular portion through the plate-shaped portion, and Even in the use state of the above, it is possible to reliably prevent the occurrence of cracks and the like in the tubular portion due to corrosion of the conductor and freezing and expansion of intruding water droplets. In addition, by using a solid copper bar as a material, the conductivity (percent conductivity) can be increased as compared with the case of using a casting material in which impurities such as phosphorus are mixed to remove contained oxygen. It is possible to improve the electrical characteristics by increasing the height.
【０００８】特に、管状部を径方向から押圧して板状部
を形成する前に、棒材を焼鈍する工程を設ける場合は、
焼鈍によって材料が軟らかくなるために押圧加工自体が
容易になるとともに、所定の形状の板状部を仕上がり良
く成形することができる。In particular, when a step of annealing the bar is provided before the tubular portion is pressed from the radial direction to form the plate-like portion,
Since the material is softened by annealing, the pressing process itself becomes easy, and a plate-shaped portion having a predetermined shape can be formed with good finish.
【０００９】[0009]
【実施例】以下、本発明の実施例を図面にもとづいて説
明する。図１および図２はそれぞれ本発明による製造方
法で得られた圧着又は圧縮端子を示す斜視図および縦断
側面図であり、同図において、圧着又は圧縮端子１は銅
製の中実棒材１Ａから成形されたもので、その長手方向
の一端部側に形成された板状部１ｄと他端部側に形成さ
れた管状部１ｂ´とからなり、上記管状部１ｂ´内の奥
端には、上記板状部１ｄに対する隔壁部１ｃが残存され
ている。２は上記板状部１ｄにその厚さ方向に貫通して
形成された連結用孔である。Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are a perspective view and a longitudinal sectional side view, respectively, showing a crimped or compressed terminal obtained by the manufacturing method according to the present invention. In the figure, a crimped or compressed terminal 1 is formed from a solid copper bar 1A. It is composed of a plate-like portion 1d formed at one end portion in the longitudinal direction and a tubular portion 1b 'formed at the other end portion. The partition wall portion 1c for the plate-like portion 1d remains. Reference numeral 2 denotes a connection hole formed through the plate-like portion 1d in the thickness direction.
【００１０】つぎに、上記構成の圧着又は圧縮端子１の
製造方法を工程順に説明する。まず、図３に示すよう
に、長尺な銅製中実棒材（図示省略）を所定長さ単位に
切断して製造しようとする圧着又は圧縮端子１の長さ寸
法に対応する銅製中実棒材１Ａを用意し、この中実棒材
１Ａの長手方向の一端部１ａ側にその端面から図４に示
すように、該棒材１Ａの軸心に沿って所定深さの第１の
孔３を冷間鍛造により形成する。この第１の孔３の孔開
け工程においては、図８に示すように、第１の基台１１
上に配置された第１の下型１２における棒材保持孔１３
内に上記中実棒材１Ａを挿入保持させるとともに、該中
実棒材１Ａの長手方向の他端面を上記基台１１側から延
出した第１の突き上げピン１４の先端で支持させ、この
状態で、アダプタ１５とホルダ１６とに保持された孔開
け用のパンチ１７を上記棒材保持孔１３内に挿入して棒
材１Ａを押圧することにより、該棒材１Ａの長手方向の
一端部１ａ側に上記第１の孔３が形成される。Next, a method of manufacturing the crimping or compression terminal 1 having the above configuration will be described in the order of steps. First, as shown in FIG. 3, a copper solid bar corresponding to the length dimension of the crimping or compression terminal 1 to be manufactured by cutting a long copper solid bar (not shown) into predetermined length units. A bar 1A is prepared, and a first hole 3 having a predetermined depth along the axis of the bar 1A is provided on one end 1a side of the solid bar 1A in the longitudinal direction as shown in FIG. Is formed by cold forging. In the step of drilling the first hole 3, as shown in FIG.
Bar holding hole 13 in first lower mold 12 arranged above
The solid bar 1A is inserted and held therein, and the other end surface in the longitudinal direction of the solid bar 1A is supported by the tip of a first push-up pin 14 extending from the base 11 side. Then, a punch 17 for making a hole held by the adapter 15 and the holder 16 is inserted into the bar holding hole 13 and the bar 1A is pressed, whereby one end 1a of the bar 1A in the longitudinal direction is pressed. The first hole 3 is formed on the side.
【００１１】つぎに、上記第１の孔３が形成された上記
棒材１Ａの長手方向の他端部１ｂ側にその端面から図５
に示すように、該棒材１Ａの軸心に沿って所定深さで、
かつ上記第１の孔３側には貫通せず、その奥端に隔壁部
１ｃを残存させる状態で第２の孔４を冷間鍛造により形
成する。この第２の孔４の孔開け工程においては、図９
に示すように、第２の基台２１上に配置された第２の下
型２２における棒材保持孔２３内に上記棒材１Ａを挿入
するとともに、上記第２の基台２１側から延出した第２
の突き上げピン２４の上端部を上記第１の孔３内に嵌入
して支持させ、この状態でアダプタ２５とホルダ２６と
に保持された孔開け用のパンチ２７を上記棒材保持孔２
３内に挿入して上記棒材１Ａを押圧することにより、該
棒材１Ａの長手方向の他端部１ｂ側に上記第２の孔４が
形成される。Next, the bar 1A in which the first hole 3 is formed is located on the other end 1b side in the longitudinal direction from the end face thereof as shown in FIG.
As shown in the figure, at a predetermined depth along the axis of the bar 1A,
Further, the second hole 4 is formed by cold forging while not penetrating the first hole 3 side, and leaving the partition wall portion 1c at the inner end thereof. In the step of drilling the second hole 4, FIG.
As shown in FIG. 5, the bar 1A is inserted into the bar holding hole 23 of the second lower mold 22 disposed on the second base 21 and extends from the second base 21 side. Second
The upper end of the push-up pin 24 is fitted into and supported by the first hole 3, and in this state, the punch 27 for making holes held by the adapter 25 and the holder 26 is inserted into the rod holding hole 2.
The second hole 4 is formed on the other end 1b side of the rod 1A in the longitudinal direction by inserting the rod 1 into the rod 3 and pressing the rod 1A.
【００１２】上記第１および第２の孔３，４が形成され
た後は直ちに棒材１Ａに対する脱脂処理が行なわれる。
この後、上記棒材１Ａを真空焼鈍して軟らかくした上
で、棒材１Ａにおける第１の孔３に対応する管状部１ａ
´側を径方向から押圧して図６に示すような板状部１ｄ
を形成する。この板状部１ｄの押圧加工工程では、図１
０に示すように、上面３２ａに後端側開放の棒材逃げ用
凹所３１を有する下金型３２と上金型３３とを用意し、
上記下金型３２の上面３２ａに、上記棒材１Ａの他端管
状部１ｂ´側が上記凹所３１上に臨出する状態に載置す
るとともに、該管状部１ｂ´の第２の孔４内にロッド状
の手持用保形芯材３４を、それに取り付けた位置決め部
材３５が下金型３２の側面３２ｂに当接するまで挿入し
て板状部１ｄを形成すべき長さを設定した後、上記上金
型３３を下降させてその下面３３ａで上記棒材１Ａの全
長を押圧させることにより、その一端管状部１ａ´側が
押し潰されて所定長さの板状部１ｄとなる。この時、棒
材１Ａの他端管状部１ｂ´側は上記凹所３１への逃げに
より、そのまま管状部１ｂ´として残される。Immediately after the first and second holes 3 and 4 are formed, the bar 1A is immediately degreased.
Thereafter, the bar 1A is vacuum-annealed to soften, and then the tubular portion 1a corresponding to the first hole 3 in the bar 1A.
The plate-shaped portion 1d as shown in FIG.
To form In the pressing process of the plate-like portion 1d, FIG.
As shown in FIG. 0, a lower mold 32 and an upper mold 33 having a bar material escape recess 31 which is open at the rear end side on the upper surface 32a are prepared.
On the upper surface 32a of the lower mold 32, the other end of the rod 1A is placed in a state where the other end of the tubular portion 1b 'projects above the recess 31 and the second hole 4 of the tubular portion 1b' The length of the plate-shaped portion 1d to be formed is set by inserting a rod-shaped hand-held shape retaining material 34 into the holding member 34 until the positioning member 35 attached thereto comes into contact with the side surface 32b of the lower mold 32. The upper die 33 is lowered, and the entire lower surface 33a of the bar 1A is
By pressing the length, the plate-shaped portion 1d having a predetermined length are squashed one end tubular section 1a' side. At this time, the other end of the bar 1A on the side of the tubular portion 1b 'is escaped to the recess 31 and is left as it is as the tubular portion 1b'.
【００１３】なお、上記棒材１Ａの他端管状部１ｂ´に
対応する上記上金型３３の下面３３ａには僅かなテーパ
面３３ｂが形成されているために、該管状部１ｂ´が歪
に変形することがない。Since a slightly tapered surface 33b is formed on the lower surface 33a of the upper die 33 corresponding to the other end tubular portion 1b 'of the bar 1A, the tubular portion 1b' is distorted. No deformation.
【００１４】上記のごとく、中実棒材１Ａの長手方向の
一端部１ａ側に第１の孔３を形成して管状部１ａ´とし
た上で、この管状部１ａ´を押圧加工して所定の板状部
１ｄを形成するので、比較的小さい加圧力で容易に所望
形状の板状部１ｄを形成することができる。As described above, the first hole 3 is formed on one end 1a side of the solid bar 1A in the longitudinal direction to form the tubular portion 1a ', and the tubular portion 1a' is pressed to a predetermined shape. Since the plate-like portion 1d is formed, the plate-like portion 1d having a desired shape can be easily formed with a relatively small pressing force.
【００１５】この後、上記棒材１Ａにおける板状部１ｄ
に対して先切り加工を行なうとともに、図７に示すよう
に連結用孔２を形成し、さらに刻印などを施す。そし
て、上記連結用孔２の面取り加工やばり取り加工を行な
った後、仕上げ成形としての平押し加工を行なう。Thereafter, a plate-like portion 1d of the bar 1A is formed.
, A connecting hole 2 is formed as shown in FIG. Then, after performing the chamfering or deburring of the connection hole 2, flat pressing as finish molding is performed.
【００１６】最後に、上記棒材１Ａに対して脱脂処理を
行なった後、図７に示すように、錫めっき５を膜状に施
すことによって、所定の圧着又は圧縮端子１の製造が完
了する。Finally, after performing the degreasing treatment on the bar 1A, as shown in FIG. 7, tin plating 5 is applied in the form of a film to complete the manufacture of the predetermined crimping or compression terminal 1. .
【００１７】このようにして製造された圧着又は圧縮端
子１は、その使用時に、上記板状部１ｄに対して、図１
に示すような相手端子Ｍが重合されて上記連結用孔２に
挿通させたねじＳとナットＮとにより締め付け固定され
る一方、管状部１ｂ´における第２の孔４内には、導体
Ｐが挿入接続される。When the crimping or compression terminal 1 manufactured in this way is used, the crimping or compression terminal 1 is attached to the plate-like portion 1d as shown in FIG.
As shown in the figure, the mating terminal M is overlapped and fastened and fixed by the screw N and the nut N inserted into the connection hole 2, while the conductor P is in the second hole 4 in the tubular portion 1 b ′. Insert connection.
【００１８】ここで、上記圧着又は圧縮端子１は銅製の
中実棒材１Ａからなり、板状部１ｄと管状部１ｂ´との
間には隔壁部１ｃが残存されているので、外部の水滴が
押圧により密接した部分に形成されるきわめて微小なす
ま間に入り込んだとしても、これが管状部１ｂ´の第２
の孔４内にまで侵入することは全くない。したがって、
板状部１ｄと管状部１ｂ´との間に密封用のろう付け部
を設けるような煩雑で、熟練を要する工程を設けなくて
も、導体Ｐの腐食や侵入水滴の凍結膨張にともなう管状
部１ｂ´の割れなどの発生を確実に防止でき、良好な導
通性能を長期にわたって維持させることができる。Here, the crimping or compression terminal 1 is made of a solid bar 1A made of copper, and a partition 1c is left between the plate-like portion 1d and the tubular portion 1b '. Even if it gets into the very small gap formed by the pressing,
Does not penetrate into the holes 4 at all. Therefore,
Complicated, such as providing a brazing portion for sealing between the plate-shaped portion 1d and the tubular portion 1b ', the tubular portion associated with corrosion of the conductor P and freezing and expansion of invading water droplets without providing a step requiring skill. 1b 'can reliably be prevented from being cracked, and good conduction performance can be maintained over a long period of time.
【００１９】また、上記のような隔壁部１ｃを備えた圧
着又は圧縮端子１は鋳造によっても容易に成形すること
が可能であるけれども、鋳造による場合は、鋳物用材料
に、その中に含有されている酸素を除去するためにリン
などの不純物が混入されており、そのために、導電率
（パーセント導電率）が、基準のものを１００％とする
と、最高でも９２．８％程度であって、導電性能の面で
難点がある。これに対して、上記実施例に述べたよう
に、銅製の中実棒材１Ａを用いて成形したものでは、同
導電率が基準のものを１００％とすると、１００％以上
に高くなり、優れた導電特性を得ることができる。Although the crimping or compression terminal 1 having the above-mentioned partition wall portion 1c can be easily formed by casting, if it is cast, it is contained in a casting material. In order to remove oxygen, impurities such as phosphorus are mixed in, and therefore, the conductivity (percent conductivity) is about 92.8% at the maximum when the standard is 100%. There is a problem in terms of conductivity. On the other hand, as described in the above embodiment, in the case of molding using the solid bar 1A made of copper, when the standard conductivity is set to 100%, the conductivity becomes 100% or more, which is excellent. The conductive properties can be improved.
【００２０】[0020]
【発明の効果】以上のように、請求項１の発明によれ
ば、銅製中実棒材の長手方向の両端部にそれらの端面か
ら棒材の軸心に沿って所定深さで互いに貫通しない第１
および第２の孔をそれぞれ形成し、該棒材の全長を上下
金型で押圧しそのうち該棒材の一端部側の管状部のみを
径方向から押圧し押し潰して板状部とするものであるか
ら、板状部を容易に形成できるとともに、管状部の奥端
には隔壁部を容易に残存形成することができる。したが
って、上記板状部の内面に密封用ろう付け部などを設け
るといった手数および熟練を要する作業が不要で、生産
性を高め、生産コストの低減を図りつつ、水滴などが板
状部を通って管状部内に侵入するおそれが全くない確実
な水密構造とすることができ、特に、屋外での使用に際
して導体の腐食や侵入水滴の凍結膨張にともなう管状部
に割れなどの発生を確実に防止できる。そのうえ、素材
として銅製の中実棒材を使用することにより、例えば含
有酸素を除去するためにリン等の不純物が混入されてい
る鋳物用材料を用いる場合に比べて導電率（パーセント
導電率）を高めて電気特性の向上も図ることができる。As described above, according to the first aspect of the present invention , the copper solid bars do not penetrate each other at a predetermined depth from their end surfaces along the axis of the bar from both ends in the longitudinal direction. First
And a second hole, respectively, and the entire length of the bar is
Pressing with a mold, of which only the tubular portion on one end side of the bar is pressed from the radial direction and crushed into a plate-shaped portion, so that the plate-shaped portion can be easily formed, and A partition can easily be formed at the end. Therefore, the need for labor and skill, such as providing a brazing portion for sealing on the inner surface of the plate-shaped portion, is unnecessary, and while increasing productivity and reducing production costs, water droplets and the like pass through the plate-shaped portion. It is possible to provide a reliable watertight structure with no possibility of intrusion into the tubular portion, and in particular, it is possible to reliably prevent the tubular portion from cracking due to corrosion of the conductor and freezing and expansion of the intruding water droplets when used outdoors. In addition, by using a solid copper bar as a material, the conductivity (percent conductivity) can be increased as compared with the case of using a casting material in which impurities such as phosphorus are mixed to remove contained oxygen. It is possible to improve the electrical characteristics by increasing the height.
【００２１】特に、請求項２のように、管状部を径方向
から押圧して板状部を形成する前に、棒材を焼鈍する工
程を設ける場合は、焼鈍によって材料が軟らかくなるた
めに押圧加工自体が容易になるとともに、所定の形状の
板状部を仕上がり良く成形することができる。In particular, in the case where a step of annealing the bar is provided before the tubular portion is pressed from the radial direction to form the plate-like portion, the material is softened by the annealing. The processing itself becomes easy, and a plate-shaped portion having a predetermined shape can be formed with a good finish.
【図１】本発明による製造方法で得られた圧着又は圧縮
端子の一実施例を示す斜視図である。FIG. 1 is a perspective view showing one embodiment of a crimped or compressed terminal obtained by a manufacturing method according to the present invention.
【図２】同上実施例における圧着又は圧縮端子の縦断側
面図である。FIG. 2 is a vertical side view of a crimping or compression terminal in the embodiment.
【図３】同圧着又は圧縮端子に用いられる銅製中実棒材
の一部破断側面図である。FIG. 3 is a partially broken side view of a solid copper bar used for the crimping or compression terminal.
【図４】同棒材の長手方向の一端部側に第１の孔を形成
した状態を示す縦断側面図である。FIG. 4 is a longitudinal sectional side view showing a state in which a first hole is formed on one end side of the bar in the longitudinal direction.
【図５】同棒材の長手方向の他端部側に第２の孔を形成
した状態を示す縦断側面図である。FIG. 5 is a longitudinal sectional side view showing a state in which a second hole is formed on the other end side of the bar in the longitudinal direction.
【図６】同棒材の一端部側の管状部を押圧加工して板状
部を形成した状態を示す縦断側面図である。FIG. 6 is a longitudinal sectional side view showing a state in which a plate-shaped portion is formed by pressing a tubular portion on one end side of the bar.
【図７】同棒材にめっきを施した状態を一部拡大して示
す縦断側面図である。FIG. 7 is a longitudinal sectional side view showing a partially enlarged state of the bar material plated.
【図８】同棒材に第１の孔を冷間鍛造で形成する成形型
を示す縦断正面図である。FIG. 8 is a longitudinal sectional front view showing a forming die for forming a first hole in the bar by cold forging.
【図９】同棒材に第２の孔を冷間鍛造で形成する成形型
を示す縦断正面図である。FIG. 9 is a longitudinal sectional front view showing a forming die for forming a second hole in the bar by cold forging.
【図１０】同棒材の一端部側の管状部を押圧加工する成
形型を示す縦断側面図である。FIG. 10 is a vertical sectional side view showing a molding die for pressing a tubular portion on one end side of the bar.
【図１１】従来の圧着又は圧縮端子に使用される金属管
の縦断側面図である。FIG. 11 is a vertical side view of a metal tube used for a conventional crimping or compression terminal.
【図１２】従来の圧着又は圧縮端子の一部破断平面図で
ある。FIG. 12 is a partially broken plan view of a conventional crimping or compression terminal.
【図１３】従来の圧着又は圧縮端子の縦断側面図であ
る。FIG. 13 is a vertical side view of a conventional crimping or compression terminal.
１Ａ 銅製中実棒材１ａ´、 １ｂ´ 管状部 １ｃ 隔壁部 １ｄ 板状部 ２ 連結用孔 ３ 第１の孔 ４ 第２の孔 ５ めっき膜1A Copper Solid Bar 1a ', 1b' Tubular Part 1c Partition Part 1d Plate Part 2 Connecting Hole 3 First Hole 4 Second Hole 5 Plating Film
Claims (2)
端部側にその端面から該棒材の軸心に沿って所定深さの
第１の孔を冷間鍛造により形成する工程と、上記中実棒
材の長手方向の他端部側にその端面から該棒材の軸心に
沿って所定深さを有し、かつ上記第１の孔側には貫通し
ない第２の孔を冷間鍛造により形成する工程と、その上
面に後端側開放の棒材逃げ用凹所を有する下金型の上面
に上記棒材を上記第２の孔に対応する管状部が上記凹所
上に臨出する状態に載置させたうえ、上記棒材の周面の
全長に当接する下面を有する上金型を上記下金型に対し
て下降させることにより上記棒材における第２の孔に対
応する管状部を上記下金型の凹所に逃がして管状部のま
ま残しつつ、第１の孔に対応する管状部を径方向から押
圧し押し潰して板状部を成形する工程と、上記板状部に
その厚さ方向に貫通する連結用孔を形成する工程と、上
記棒材全体にめっきを施す工程とを備えたことを特徴と
する圧着又は圧縮端子の製造方法。1. A step of forming a first hole of a predetermined depth from an end surface of a solid copper bar having a predetermined length in a longitudinal direction along an axis of the bar by cold forging. A second hole which has a predetermined depth along the axis of the bar at the other end in the longitudinal direction of the solid bar from the end face thereof, and does not penetrate the first hole side; forming by cold forging, on the
The upper surface of the lower mold having a bar escape recess that is open to the rear end on the surface
The tubular portion corresponding to the second hole is formed by inserting the rod into the recess.
After placing it on the bar,
An upper mold having a lower surface that contacts the entire length
To lower the second hole in the bar.
Or a tubular section for response of the tube-shaped portion in relief in the recess of the lower mold
Forming a plate-shaped portion by pressing and crushing the tubular portion corresponding to the first hole from the radial direction while leaving, and forming a connection hole penetrating the plate-shaped portion in the thickness direction thereof. And a step of plating the entire bar material.
を形成する前に、棒材を焼鈍する工程が備えられている
請求項１の圧着又は圧縮端子の製造方法。2. The method for manufacturing a crimping or compression terminal according to claim 1, further comprising a step of annealing the bar before pressing the tubular portion from the radial direction to form a plate-like portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7006918A JP2700303B2 (en) | 1995-01-20 | 1995-01-20 | Method for manufacturing crimped or compressed terminals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7006918A JP2700303B2 (en) | 1995-01-20 | 1995-01-20 | Method for manufacturing crimped or compressed terminals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08195265A JPH08195265A (en) | 1996-07-30 |
| JP2700303B2 true JP2700303B2 (en) | 1998-01-21 |
Family
ID=11651623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7006918A Expired - Lifetime JP2700303B2 (en) | 1995-01-20 | 1995-01-20 | Method for manufacturing crimped or compressed terminals |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2700303B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5055890A (en) * | 1973-09-17 | 1975-05-16 | ||
| JPS5250579B2 (en) * | 1973-10-23 | 1977-12-26 | ||
| JPS5339490A (en) * | 1976-09-24 | 1978-04-11 | Furukawa Electric Co Ltd:The | Production method of solderless terminal for aluminum conductor |
-
1995
- 1995-01-20 JP JP7006918A patent/JP2700303B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08195265A (en) | 1996-07-30 |
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