JP5077697B2 - Electric wires with terminal fittings and terminal fittings - Google Patents

Electric wires with terminal fittings and terminal fittings Download PDF

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JP5077697B2
JP5077697B2 JP2008248906A JP2008248906A JP5077697B2 JP 5077697 B2 JP5077697 B2 JP 5077697B2 JP 2008248906 A JP2008248906 A JP 2008248906A JP 2008248906 A JP2008248906 A JP 2008248906A JP 5077697 B2 JP5077697 B2 JP 5077697B2
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terminal
core wire
single core
electric wire
caulking
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JP2010080333A (en
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宏幸 松岡
聡史 釣田
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Sumitomo Wiring Systems Ltd
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本発明は、端子金具付き電線及び端子金具に関する。   The present invention relates to an electric wire with a terminal fitting and a terminal fitting.

被覆電線に端子金具を取り付けるに際して被覆電線の露出した芯線を端子金具に圧着接続することが行われる(特許文献1参照)。   When the terminal fitting is attached to the covered electric wire, the exposed core wire of the covered electric wire is crimped and connected to the terminal fitting (see Patent Document 1).

ここで、芯線を端子金具に圧着するに際しては、例えば、底板部の側縁から立ち上げた一対のバレル部を有するオープンバレル型の端子金具をアンビル上に載置してその底板部に芯線を宛がう。そして、端子金具の上方に配したクリンパを降下させると、バレル部が芯線を包み込むように徐々に変形するとともに、バレル部の先端部が芯線を押し潰すように芯線に食い込むことにより圧着が行われる。
特開2007−12341公報
Here, when crimping the core wire to the terminal fitting, for example, an open barrel type terminal fitting having a pair of barrels raised from the side edge of the bottom plate portion is placed on the anvil, and the core wire is attached to the bottom plate portion. Address. When the crimper disposed above the terminal fitting is lowered, the barrel portion is gradually deformed so as to wrap the core wire, and the tip of the barrel portion is pressed into the core wire so as to crush the core wire. .
JP 2007-12341 A

ところで、電線の芯線は導電性の金属であるため、芯線の周囲には酸化膜が形成されやすい。特に、芯線にアルミニウムやアルミニウム合金を用いた場合には、酸化膜が形成されやすい。そのため、ワイヤバレル及び芯線を圧着する(かしめる)際に芯線がワイヤバレルに擦られて酸化膜が破られるようになっている。
このことから、酸化膜を破るという観点からは、ワイヤバレル及び芯線を強い力で圧着することが望ましい。
By the way, since the core wire of an electric wire is a conductive metal, an oxide film is easily formed around the core wire. In particular, when aluminum or an aluminum alloy is used for the core wire, an oxide film is easily formed. Therefore, when the wire barrel and the core wire are crimped (crimped), the core wire is rubbed against the wire barrel to break the oxide film.
From this point of view, it is desirable to crimp the wire barrel and the core wire with a strong force from the viewpoint of breaking the oxide film.

しかし、ワイヤバレル及び芯線を強い力で圧着した場合には、芯線が押し潰され、その下の底板部に強い力がかかる。このとき底板部が押し潰されて芯線の軸方向に伸びが生じ、これにより、端子金具全体としても伸びが生じることになる。
このような端子金具の伸びが発生すると、その全長寸法が設計寸法よりも予期しない量だけ長くなって他の部品との干渉を起こしたり、製造時の寸法管理を困難にする等の問題を生じさせる。
However, when the wire barrel and the core wire are crimped with a strong force, the core wire is crushed and a strong force is applied to the bottom plate portion below the core wire. At this time, the bottom plate portion is crushed and stretched in the axial direction of the core wire, whereby the entire terminal fitting is stretched.
When such extension of the terminal fitting occurs, the overall length becomes longer than the design dimension by an unexpected amount, causing interference with other parts, and causing problems such as difficulty in dimensional management during manufacturing. Let

本発明は上記のような事情に基づいて完成されたものであって、強い力で圧着しなくても良好な電気的接続状態を確保することができる端子金具付き電線及び端子金具を提供することを目的とする。   The present invention has been completed based on the above circumstances, and provides an electric wire with terminal fittings and a terminal fitting that can ensure a good electrical connection state without being crimped with a strong force. With the goal.

本発明に係る端子金具付き電線は、単芯線を有し、この単芯線の端末部に端子挿入孔を貫通形成してなる電線と、この電線の単芯線にかしめられた端子金具とからなり、前記端子金具は、相手側端子と電気的に接続される接続部と、前記接続部から延出され前記単芯線の端末部が載置される底板部と、前記底板部から突出した先端部が前記端子挿入孔を貫通するとともに、この先端部が前記端子挿入孔の孔縁にかしめられるかしめ部と、を備えるところに特徴を有する(手段1)。   The electric wire with a terminal fitting according to the present invention has a single core wire, and includes an electric wire formed by penetrating a terminal insertion hole in a terminal portion of the single core wire, and a terminal fitting caulked to the single core wire of the electric wire, The terminal fitting includes a connection part electrically connected to a mating terminal, a bottom plate part extending from the connection part on which a terminal part of the single core wire is placed, and a tip part protruding from the bottom plate part. A feature is that the terminal insertion hole includes a caulking portion that penetrates the terminal insertion hole and is caulked to a hole edge of the terminal insertion hole (means 1).

手段1において、前記かしめ部は、所定の厚みの金属板材が打ち抜かれることにより互いに反対方向に突出し、かつ、前記単芯線の軸方向に長い一対の雄端子がが共に前記単芯線側に屈曲されることにより形成されているようにしてもよい(手段2)。
このようにすれば、打ち抜き加工により雄端子を容易に形成することができる。また、雄端子は、単芯線の軸方向に長いから、幅方向に長い場合と比較して、雄端子の長さを自由に設定できる。
In the means 1, the caulking portion protrudes in opposite directions by punching a metal plate material having a predetermined thickness, and a pair of male terminals that are long in the axial direction of the single core wire are both bent toward the single core wire side. (Means 2).
If it does in this way, a male terminal can be easily formed by stamping. Further, since the male terminal is long in the axial direction of the single core wire, the length of the male terminal can be freely set as compared with the case where the male terminal is long in the width direction.

手段1又は手段2において、前記かしめ部に加えて、前記電線の絶縁被覆の上から前記電線を保持する一対のかしめ片を有するインシュレーションバレル部を備えるようにしてもよい(手段3)。
このようにすれば、かしめ部と単芯線との接続のみで電線を保持するよりも、確実に電線を保持することができる。
In means 1 or 2, in addition to the caulking part, an insulation barrel part having a pair of caulking pieces for holding the electric wire from above the insulating coating of the electric wire may be provided (means 3).
If it does in this way, an electric wire can be held reliably rather than holding an electric wire only by connection with a caulking part and a single core wire.

本発明に係る端子金具は、相手側端子と電気的に接続される接続部と、
前記接続部から延出され単芯線を有する電線の端末部が載置される底板部と、
前記底板部から突出した先端部が、前記端末部の単芯線に貫通形成された端子挿入孔を貫通可能とされるとともに、この先端部が前記端子挿入孔の孔縁にかしめられるかしめ部と、を備えるところに特徴を有する(手段4)。
The terminal fitting according to the present invention includes a connection part that is electrically connected to the counterpart terminal,
A bottom plate portion on which a terminal portion of an electric wire extending from the connection portion and having a single core wire is placed;
A tip portion protruding from the bottom plate portion is capable of penetrating a terminal insertion hole formed through the single core wire of the terminal portion, and a caulking portion that is crimped to a hole edge of the terminal insertion hole; (Means 4).

手段4において、前記かしめ部は、所定の厚みの金属板材が打ち抜かれることにより互いに反対方向に突出し、かつ、前記単芯線の軸方向に長い一対の雄端子がが共に前記単芯線が配される側に屈曲されることにより形成されているようにしてもよい(手段5)。
このようにすれば、打ち抜き加工により雄端子を容易に形成することができる。また、雄端子は、単芯線の軸方向に長いから、幅方向に長い場合と比較して、雄端子の長さを自由に設定できる。
In the means 4, the caulking portion protrudes in opposite directions by punching a metal plate material having a predetermined thickness, and a pair of male terminals that are long in the axial direction of the single core wire are arranged together with the single core wire. It may be formed by being bent to the side (means 5).
If it does in this way, a male terminal can be easily formed by stamping. Further, since the male terminal is long in the axial direction of the single core wire, the length of the male terminal can be freely set as compared with the case where the male terminal is long in the width direction.

手段4又は手段5において、前記かしめ部に加えて、前記電線の絶縁被覆の上から前記電線を保持する一対のかしめ片を有するインシュレーションバレル部を備えるようにしてもよい(手段6)。
このようにすれば、かしめ部と単芯線との接続のみで電線を保持するよりも、確実に電線を保持することができる。
In the means 4 or means 5, in addition to the caulking part, an insulation barrel part having a pair of caulking pieces for holding the electric wire from above the insulating coating of the electric wire may be provided (means 6).
If it does in this way, an electric wire can be held reliably rather than holding an electric wire only by connection with a caulking part and a single core wire.

本構成によれば、かしめ部の先端部が端子挿入孔を貫通するまで挿入され、その先端部が端子挿入孔の孔縁にかしめられる。ここで、かしめ部の先端部が端子挿入孔の孔縁にかしめられると、強い力でかしめられていなくても、かしめ部の先端部のうち前記孔縁に接する部分が端子挿入孔の孔縁のエッジ部分に擦られて単芯線の酸化膜や水酸化膜等の絶縁性の皮膜が破られる。これにより、強い力で圧着しなくても単芯線と端子金具との間で良好な電気的接続状態が得られる。
また、強い力で圧着する必要がないから、端子金具の一部が強く押し潰されることによる延びが生じず、端子金具全体としての延びを抑制することができる。
According to this configuration, the tip end portion of the caulking portion is inserted until it penetrates the terminal insertion hole, and the tip end portion is caulked to the hole edge of the terminal insertion hole. Here, when the tip of the caulking portion is caulked to the hole edge of the terminal insertion hole, even if the caulking portion is not caulked by a strong force, the portion of the tip of the caulking portion that contacts the hole edge is the hole edge of the terminal insertion hole. The insulating film such as the oxide film or hydroxide film of the single core wire is broken by rubbing against the edge portion of the wire. Thereby, even if it does not crimp by strong force, a favorable electrical connection state is obtained between a single core wire and a terminal metal fitting.
Moreover, since it is not necessary to press-fit with a strong force, the extension by the part of a terminal metal fitting being strongly crushed does not arise, and the extension as a whole terminal metal fitting can be suppressed.

<実施形態1>
以下、本発明を具体化した実施形態1の端子金具付き電線10について、図1〜図8を参照して説明する。
本実施形態の端子金具付き電線10は、図1に示すように、被覆電線20の端末部に端子金具30が圧着接続されてなり、例えば電気自動車において走行用の動力源を構成するバッテリ、インバータ、モータなどの装置(図示せず)の間に配索されるものである。なお、図1の右方を前方とし、左方を後方として説明する。
<Embodiment 1>
Hereinafter, the electric wire 10 with a terminal metal fitting of Embodiment 1 which actualized this invention is demonstrated with reference to FIGS.
As shown in FIG. 1, the electric wire 10 with terminal metal fittings of the present embodiment is formed by connecting a terminal metal fitting 30 to a terminal portion of a covered electric wire 20, for example, a battery and an inverter that constitute a power source for traveling in an electric vehicle. The device is routed between devices (not shown) such as a motor. Note that the right side of FIG. 1 is assumed to be the front and the left side is assumed to be the rear.

被覆電線20(電線)は、アルミニウムからなる単芯線21を樹脂製の絶縁被覆22(絶縁層)で被覆したものであり、その端末部においては、絶縁被覆22が剥き取られて単芯線21が露出されている。なお、単芯線21は、銅合金製の従来の単芯線に代えてアルミ製の単芯線を使用することで、軽量化や低コスト化が図られている。また、単芯線21とは、複数本が束になったり複数本を撚り合せたものでなく、一本のみからなる芯線をいう。   The covered electric wire 20 (electric wire) is obtained by coating a single core wire 21 made of aluminum with a resin insulating coating 22 (insulating layer), and the insulating coating 22 is peeled off at the end portion of the single core wire 21. Exposed. In addition, the single core wire 21 is reduced in weight and cost by using an aluminum single core wire instead of the conventional single core wire made of copper alloy. Moreover, the single core wire 21 refers to a core wire composed of only one wire, not a plurality of wires bundled or twisted.

単芯線21の露出した端末部は、扁平に加工された扁平部23とされており(図8参照)、この扁平部23の中心部には、図3に示すように、単芯線21の軸方向に長い長方形状の端子挿入孔25が板厚方向に貫通形成されている。   The exposed end portion of the single core wire 21 is a flat portion 23 processed into a flat shape (see FIG. 8), and the central portion of the flat portion 23 has an axis of the single core wire 21 as shown in FIG. A rectangular terminal insertion hole 25 that is long in the direction is formed so as to penetrate in the plate thickness direction.

扁平部23を有する単芯線21の成形方法について説明すると、まず被覆電線20を切断機により切断端面が軸方向と垂直になるように切断し、被覆電線20の端末部(先端部)において絶縁被覆を剥ぎ取り、単芯線21を露出させる。
次に、扁平部23の軸方向における長さに相当する長さの平坦な加圧面を有する上型61と下型62からなる金型を用いて(図4)、単芯線21の露出部分を金型で鍛造することにより扁平な形に成形される(図5)。その後、打ち抜き加工により扁平部23の中心部を長方形状(角筒状)の型(図示しない)で打ち抜くことにより扁平部23に端子挿入孔25が成形され、被覆電線20の端末部の加工が終了する。
The method for forming the single core wire 21 having the flat portion 23 will be described. First, the covered electric wire 20 is cut by a cutting machine so that the cut end surface is perpendicular to the axial direction, and an insulating coating is applied to the terminal portion (tip portion) of the covered electric wire 20. The single core wire 21 is exposed.
Next, an exposed portion of the single core wire 21 is formed using a mold including an upper die 61 and a lower die 62 having a flat pressing surface having a length corresponding to the length of the flat portion 23 in the axial direction (FIG. 4). It is formed into a flat shape by forging with a mold (FIG. 5). Thereafter, the center portion of the flat portion 23 is punched by a rectangular (square tube) mold (not shown) by punching, whereby the terminal insertion hole 25 is formed in the flat portion 23, and the terminal portion of the covered electric wire 20 is processed. finish.

端子金具30は、アルミ製よりも高い強度が得られる銅合金製とされ、図1に示すように、相手側端子(図示しない)と接続される接続部31と、接続部31から延出され単芯線21の端末部が載置される底板部35と、被覆電線20を保持するインシュレーションバレル部41と、を備え、これらが一体に構成されている。
接続部31は、箱型の雌端子であって、図示しない雄端子が挿入孔31Aに挿入されることにより、電気的接続が図られる。
The terminal metal fitting 30 is made of a copper alloy that can obtain higher strength than aluminum, and as shown in FIG. 1, a connection part 31 connected to a counterpart terminal (not shown), and extends from the connection part 31. A bottom plate portion 35 on which a terminal portion of the single core wire 21 is placed and an insulation barrel portion 41 that holds the covered electric wire 20 are provided, and these are integrally formed.
The connection portion 31 is a box-shaped female terminal, and electrical connection is achieved by inserting a male terminal (not shown) into the insertion hole 31A.

インシュレーションバレル部41は、底板部35と一体に形成され、被覆電線20の軸方向(軸方向とは被覆電線20の軸方向をいう。即ち図1の左右方向)に底板部35と連続した位置に配されている。
具体的には、インシュレーションバレル部41は、底板部35から連続した底板の左右両側縁から一対のかしめ片41A,41Aが立ち上げられてなり、これらの一対のかしめ片41A,41Aを被覆電線20側に湾曲させることにより、被覆電線20が離脱や位置ずれしないように保持されている。
The insulation barrel portion 41 is formed integrally with the bottom plate portion 35 and is continuous with the bottom plate portion 35 in the axial direction of the covered electric wire 20 (the axial direction refers to the axial direction of the covered electric wire 20; that is, the left-right direction in FIG. 1). Arranged in position.
Specifically, the insulation barrel portion 41 includes a pair of caulking pieces 41A and 41A raised from the left and right side edges of the bottom plate continuous from the bottom plate portion 35, and the pair of caulking pieces 41A and 41A are covered with the covered electric wire. By being bent toward the 20 side, the covered electric wire 20 is held so as not to be detached or displaced.

底板部35は、ほぼ平坦で、前後方向(単芯線21の軸方向)に長い長方形状をなし、接続部31の後端部の下部(側面部31Aのほぼ下半分及び底面部31B)と軸方向に連なっている。
底板部35の前後方向(軸方向)の長さは、単芯線21の露出されている部分よりもやや長く、底板部35の幅寸法は、単芯線21の扁平部23の幅よりやや大きい幅寸法となっている。
The bottom plate portion 35 is substantially flat and has a rectangular shape that is long in the front-rear direction (the axial direction of the single core wire 21), and a lower portion of the rear end portion of the connection portion 31 (substantially the lower half of the side surface portion 31A and the bottom surface portion 31B) and the shaft. It is lined up in the direction.
The length in the front-rear direction (axial direction) of the bottom plate portion 35 is slightly longer than the exposed portion of the single core wire 21, and the width dimension of the bottom plate portion 35 is slightly larger than the width of the flat portion 23 of the single core wire 21. It is a dimension.

また、底板部35には、単芯線21をかしめ付けるかしめ部50が設けられている。
かしめ部50は、共に上方に突出する長方形状(短冊状)の2本の雄端子51,52からなり、底板部35に、端子挿入孔25に対応する所定の間隔を空けて前後一対軸方向に並んで形成されている。
The bottom plate portion 35 is provided with a caulking portion 50 for caulking the single core wire 21.
The caulking portion 50 includes two male terminals 51 and 52 each having a rectangular shape (strip shape) projecting upward, and a pair of front and rear axial directions with a predetermined interval corresponding to the terminal insertion hole 25 in the bottom plate portion 35. Are formed side by side.

これら一対の雄端子51,52が端子挿入孔25を貫通するとともに、端子挿入孔25を貫通した雄端子51,52の先端部51A,52Aが端子挿入孔25の孔縁25Aにかしめられている。即ち、雄端子51,52は前方側に屈曲することで孔縁25Aに係止され、雄端子51,52は後方側に屈曲することで孔縁25Aに係止されている。   The pair of male terminals 51 and 52 pass through the terminal insertion hole 25, and tip portions 51 </ b> A and 52 </ b> A of the male terminals 51 and 52 passing through the terminal insertion hole 25 are caulked to the hole edge 25 </ b> A of the terminal insertion hole 25. . That is, the male terminals 51 and 52 are locked to the hole edge 25A by bending forward, and the male terminals 51 and 52 are locked to the hole edge 25A by bending backward.

端子金具30のかしめ部50の成形方法は、まず、図7に示すように、所定の厚みの金属板材が打ち抜かれることにより互いに反対方向に突出し、かつ、前記単芯線21の軸方向に長い一対の雄端子51,52が形成される。なお、図7は、インシュレーションバレル部41のかしめ片41A,41A及び底板部35の両側縁部については打ち抜き後の端子原板に曲げ加工を施して屈曲させたものとなっている。
そして、図8に示すように、治具(図示しない)を用いて一対の雄端子51,52を上方に向けて直角に屈曲させることにより、かしめ部50の成形が終了する。なお、雄端子51,52の曲げ加工後には、底板部35に長方形状の開口部39が残される。
First, as shown in FIG. 7, a method of forming the caulking portion 50 of the terminal fitting 30 is a pair of metal plates having a predetermined thickness that project in opposite directions by being punched and that are long in the axial direction of the single core wire 21. Male terminals 51 and 52 are formed. In FIG. 7, the crimping pieces 41A and 41A of the insulation barrel portion 41 and both side edges of the bottom plate portion 35 are bent by bending the punched terminal original plate.
Then, as shown in FIG. 8, the pair of male terminals 51 and 52 are bent upward at a right angle using a jig (not shown), thereby completing the formation of the caulking portion 50. Note that the rectangular opening 39 is left in the bottom plate portion 35 after the bending of the male terminals 51 and 52.

次に、端子金具付き電線の製造方法について説明する。
図8に示すように、被覆電線20が端子金具30の上方であって、扁平部23の面が底板部35の面と平行となる位置から、かしめ部50が端子挿入孔25内に挿入されるように、底板部35の上面に被覆電線20の扁平部23を載置する(図9)。
Next, the manufacturing method of the electric wire with a terminal metal fitting is demonstrated.
As shown in FIG. 8, the caulking portion 50 is inserted into the terminal insertion hole 25 from a position where the covered wire 20 is above the terminal fitting 30 and the surface of the flat portion 23 is parallel to the surface of the bottom plate portion 35. Thus, the flat part 23 of the covered electric wire 20 is mounted on the upper surface of the bottom plate part 35 (FIG. 9).

そして、図10に示すように、例えば、端子金具30を基台70の上に載置した状態で、軸方向の対称な位置に傾斜面81,82を有する山形のかしめ治具80の山形の頂部を一対の雄端子51,52の間に挿し込む。そして、強い力で下方に押し付ける。このとき、雄端子51,52が傾斜面81,82に押されて変形していき、端子挿入孔25の孔縁25Aに、当該孔縁25Aと接する雄端子51,52の部分(先端部51A,52A)が孔縁25Aのエッジ部分に擦られつつ徐々にかしめられていく。そして、図1に示すように、雄端子51,52の先端部51A,52Aが端子挿入孔25の孔縁25Aにかしめられて端子金具付き電線の製造が終了する。   Then, as shown in FIG. 10, for example, in a state where the terminal fitting 30 is placed on the base 70, the angle-shaped caulking jig 80 having the inclined surfaces 81 and 82 at symmetrical positions in the axial direction is formed. The top is inserted between the pair of male terminals 51 and 52. Then, press down with a strong force. At this time, the male terminals 51 and 52 are pushed and deformed by the inclined surfaces 81 and 82, and the portions of the male terminals 51 and 52 (tip portions 51 </ b> A) that are in contact with the hole edge 25 </ b> A of the terminal insertion hole 25. 52A) is gradually caulked while being rubbed against the edge portion of the hole edge 25A. And as shown in FIG. 1, the front-end | tip parts 51A and 52A of the male terminals 51 and 52 are crimped to the hole edge 25A of the terminal insertion hole 25, and manufacture of an electric wire with a terminal metal fitting is complete | finished.

本実施形態によれば、以下の効果を奏する。
かしめ部50の先端部51A,52Aが端子挿入孔25を貫通するまで挿入され、その先端部51A,52Aが端子挿入孔25の孔縁25Aにかしめられる。ここで、かしめ部50の先端部51A,52Aが端子挿入孔25の孔縁25Aにかしめられると、強い力でかしめられていなくても、かしめ部50の先端部51A,52Aのうち孔縁25Aに接する部分が端子挿入孔25の孔縁25Aのエッジ部分に擦られて単芯線21の酸化膜や水酸化膜等の絶縁性の皮膜が破られる。これにより、強い力で圧着しなくても単芯線21と端子金具30との間で良好な電気的接続状態が得られる。
According to this embodiment, the following effects can be obtained.
The front end portions 51A and 52A of the caulking portion 50 are inserted until they penetrate the terminal insertion hole 25, and the front end portions 51A and 52A are caulked to the hole edge 25A of the terminal insertion hole 25. Here, when the front end portions 51A and 52A of the caulking portion 50 are caulked to the hole edge 25A of the terminal insertion hole 25, the hole edge 25A of the front end portions 51A and 52A of the caulking portion 50 is not caulked by a strong force. The portion in contact with the terminal is rubbed against the edge portion of the hole edge 25A of the terminal insertion hole 25, and the insulating film such as an oxide film or a hydroxide film of the single core wire 21 is broken. Thereby, even if it does not crimp by strong force, the favorable electrical connection state is obtained between the single core wire 21 and the terminal metal fitting 30.

また、強い力で圧着する必要がないから、端子金具30の一部が強く押し潰されることによる延びが生じず、端子金具30全体としての延びを抑制することができる。   Moreover, since it is not necessary to press-fit with strong force, the extension by the one part of the terminal metal fitting 30 being strongly crushed does not arise, and the extension as the terminal metal fitting 30 whole can be suppressed.

さらに、かしめ部50は、所定の厚みの金属板材が打ち抜かれることにより互いに反対方向に突出し、かつ、単芯線21の軸方向に長い一対の雄端子51,52が共に単芯線21側に屈曲されることにより形成されている。
このようにすれば、打ち抜き加工により雄端子51,52を容易に形成することができる。また、雄端子51,52は、単芯線21の軸方向に長いから、幅方向に長い場合と比較して、雄端子51,52の長さを自由に設定できる。
Further, the caulking portion 50 protrudes in opposite directions by punching a metal plate material of a predetermined thickness, and a pair of male terminals 51 and 52 that are long in the axial direction of the single core wire 21 are both bent toward the single core wire 21 side. Is formed.
In this way, the male terminals 51 and 52 can be easily formed by punching. Moreover, since the male terminals 51 and 52 are long in the axial direction of the single core wire 21, the length of the male terminals 51 and 52 can be freely set compared with the case where it is long in the width direction.

さらに、かしめ部50に加えて、被覆電線20(電線)の絶縁被覆22の上から被覆電線20を保持する一対のかしめ片41A,41Aを有するインシュレーションバレル部41を備えるから、かしめ部50と単芯線21との接続のみで被覆電線20を保持するよりも、確実に被覆電線20を保持することができる。   Furthermore, in addition to the caulking part 50, since the insulation barrel part 41 having a pair of caulking pieces 41 </ b> A and 41 </ b> A for holding the covered electric wire 20 from the insulating coating 22 of the covered electric wire 20 (electric wire) is provided, the caulking part 50 Rather than holding the covered electric wire 20 only by connection with the single core wire 21, the covered electric wire 20 can be reliably held.

<実施形態2>
次に、本発明の実施形態2の端子金具付き電線110を図11〜図17を参照して説明する。なお、実施形態1と同一の構成については、同一の符号を付して説明を省略する。
実施形態1では、かしめ部50は、一対の雄端子51,52からなるものであったが、実施形態2のかしめ部150は、図11,図12に示すように、円筒形状をなすものである。そのため、被覆電線20の端子挿入孔125は、円形状となっている(図13)。
<Embodiment 2>
Next, the electric wire 110 with a terminal metal fitting of Embodiment 2 of this invention is demonstrated with reference to FIGS. In addition, about the structure same as Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.
In the first embodiment, the caulking portion 50 includes a pair of male terminals 51 and 52. However, the caulking portion 150 of the second embodiment has a cylindrical shape as shown in FIGS. is there. Therefore, the terminal insertion hole 125 of the covered electric wire 20 has a circular shape (FIG. 13).

より詳しくは、図11に示すように、実施形態2の底板部35には、上方に突出するかしめ部150が一体に設けられている。
かしめ部150は、底板部35から立ち上がる円筒形状の筒形端子部151が端子挿入孔125に挿通されるとともに、端子挿入孔125を貫通した先端部151Aが端子挿入孔125の孔縁125Aにかしめられることにより、先端部151Aが全周に亘って反り返った状態で孔縁125Aに係止されている。
なお、かしめ部150のかしめ前には、図14に示すように、端子金具130の筒形端子部151の先端部151Aは反り返っておらず、全体が筒状になっている。
More specifically, as shown in FIG. 11, a caulking portion 150 protruding upward is integrally provided on the bottom plate portion 35 of the second embodiment.
In the caulking portion 150, a cylindrical tubular terminal portion 151 rising from the bottom plate portion 35 is inserted into the terminal insertion hole 125, and a distal end portion 151A penetrating the terminal insertion hole 125 is caulked to a hole edge 125A of the terminal insertion hole 125. As a result, the distal end portion 151A is locked to the hole edge 125A in a state of being warped over the entire circumference.
Prior to caulking of the caulking portion 150, as shown in FIG. 14, the distal end portion 151A of the cylindrical terminal portion 151 of the terminal fitting 130 is not warped, and is entirely cylindrical.

次に、端子金具付き電線の製造方法について説明する。
図15に示すように、被覆電線20が端子金具30の上方であって、扁平部23が底板部35と平行となる位置から、かしめ部150が端子挿入孔125内に配されるように、底板部35の上面に被覆電線20の扁平部23を載置する(図16参照)。
Next, the manufacturing method of the electric wire with a terminal metal fitting is demonstrated.
As shown in FIG. 15, the crimped portion 150 is disposed in the terminal insertion hole 125 from the position where the covered wire 20 is above the terminal fitting 30 and the flat portion 23 is parallel to the bottom plate portion 35. The flat portion 23 of the covered electric wire 20 is placed on the upper surface of the bottom plate portion 35 (see FIG. 16).

そして、図17に示すように、例えば、端子金具30の底板部35のうち、かしめ部150の近傍を基台70の上に載置した状態で、全周に亘ってテーパ状の傾斜面181を有するかしめ治具180の山形の頂部から筒形端子部151の筒形の内部に挿し込む。そして、強い力で下方に押し付ける。このとき、筒形端子部151の先端部151Aが傾斜面181に押されて変形していくにしたがって、端子挿入孔125の孔縁125Aに、当該孔縁125Aと接する筒形端子部151の部分(先端部151A)が孔縁125Aのエッジ部分に擦られつつ徐々にかしめられていく。そして、図11に示すように、筒形端子部151の先端部151Aが全周に亘って端子挿入孔125の孔縁125Aにかしめられて端子金具付き電線の製造が終了する。   Then, as shown in FIG. 17, for example, in the state where the vicinity of the caulking portion 150 of the bottom plate portion 35 of the terminal fitting 30 is placed on the base 70, the tapered inclined surface 181 is provided over the entire circumference. Are inserted into the cylindrical shape of the cylindrical terminal portion 151 from the top of the mountain of the crimping jig 180 having Then, press down with a strong force. At this time, as the distal end portion 151A of the cylindrical terminal portion 151 is pushed and deformed by the inclined surface 181, a portion of the cylindrical terminal portion 151 that contacts the hole edge 125A of the terminal insertion hole 125 is in contact with the hole edge 125A. The (tip portion 151A) is gradually caulked while being rubbed against the edge portion of the hole edge 125A. And as shown in FIG. 11, the front-end | tip part 151A of the cylindrical terminal part 151 is crimped to the hole edge 125A of the terminal insertion hole 125 over the perimeter, and manufacture of an electric wire with a terminal metal fitting is complete | finished.

本実施形態によれば、以下の効果を奏する。
かしめ部150の先端部151Aが端子挿入孔125を貫通するまで挿入され、その先端部151Aが端子挿入孔125の孔縁125Aにかしめられる。ここで、かしめ部150の先端部151が端子挿入孔25の孔縁25Aにかしめられると、強い力でかしめられていなくても、かしめ部150の先端部151Aのうち孔縁125Aに接する部分が端子挿入孔125の孔縁125Aのエッジ部分に擦られて単芯線21の酸化膜や水酸化膜等の絶縁性の皮膜が破られる。これにより、強い力で圧着しなくても単芯線21と端子金具130との間で良好な電気的接続状態が得られる。
According to this embodiment, the following effects can be obtained.
The leading end portion 151A of the caulking portion 150 is inserted until it penetrates the terminal insertion hole 125, and the leading end portion 151A is caulked to the hole edge 125A of the terminal insertion hole 125. Here, when the front end portion 151 of the caulking portion 150 is caulked to the hole edge 25A of the terminal insertion hole 25, the portion of the front end portion 151A of the caulking portion 150 that contacts the hole edge 125A is not caulked by a strong force. By rubbing against the edge portion of the hole edge 125A of the terminal insertion hole 125, an insulating film such as an oxide film or a hydroxide film of the single core wire 21 is broken. Thereby, even if it does not crimp by strong force, the favorable electrical connection state is obtained between the single core wire 21 and the terminal metal fitting 130.

また、強い力で圧着する必要がないから、端子金具30の一部が強く押し潰されることによる延びが生じず、端子金具30全体としての延びを抑制することができる。   Moreover, since it is not necessary to press-fit with strong force, the extension by the one part of the terminal metal fitting 30 being strongly crushed does not arise, and the extension as the terminal metal fitting 30 whole can be suppressed.

さらに、かしめ部150に加えて、電線の絶縁被覆の上から電線を保持する一対のかしめ片41A,41Aを有するインシュレーションバレル部41を備えるから、かしめ部150と単芯線21との接続のみで電線を保持するよりも、確実に電線を保持することができる。   Furthermore, in addition to the caulking portion 150, the insulation barrel portion 41 having a pair of caulking pieces 41A and 41A for holding the electric wire from above the insulating coating of the electric wire is provided, so that only the caulking portion 150 and the single core wire 21 are connected. The electric wire can be securely held rather than holding the electric wire.

<他の実施形態>
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる。
(1)上記実施形態では、かしめ部50,150に加えてインシュレーションバレル部41により被覆電線20を保持する構成としたが、かしめ部50のみで被覆電線20を保持するようにしてもよい。
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the covered electric wire 20 is held by the insulation barrel portion 41 in addition to the caulking portions 50 and 150, but the covered electric wire 20 may be held only by the caulking portion 50.

(2)単芯線21はアルミニウムからなることとしたが、アルミニウム合金や他の種類からなる単芯線21を用いても良い。ただし、アルミニウムやアルミニウム合金の単芯線を用いる場合には、一般に酸化膜等を破るために強い力でかしめなくてはならないが、本発明の構成によれば、強い力でかしめなくても酸化膜等を破ることができるため好適である。   (2) Although the single core wire 21 is made of aluminum, a single core wire 21 made of an aluminum alloy or other types may be used. However, in the case of using a single core wire of aluminum or aluminum alloy, in general, it must be caulked with a strong force to break the oxide film or the like. However, according to the configuration of the present invention, the oxide film is not caulked with a strong force. Etc. are suitable because they can be broken.

実施形態1に係る端子金具付き電線の一部を側断面で表した図The figure which represented a part of electric wire with a terminal metal fitting concerning Embodiment 1 in the side section 端子金具付き電線の上面図Top view of wires with terminal fittings 被覆電線の端末部の上面図Top view of the end of the covered wire 扁平部の成形方法を説明する図The figure explaining the molding method of a flat part 金型により扁平部が成形された状態を示す図The figure which shows the state by which the flat part was shape | molded by the metal mold | die 端子金具の上面図Top view of terminal fitting 雄端子の屈曲前の形状を表す図Diagram showing the shape of the male terminal before bending 端子金具付き電線の製造方法を説明する図The figure explaining the manufacturing method of the electric wire with a terminal metal fitting 端子挿入孔に雄端子が挿入された状態を示す図The figure which shows the state in which the male terminal was inserted in the terminal insertion hole かしめ方法を説明する図Diagram explaining the caulking method 実施形態2に係る端子金具付き電線のの一部を側断面で表した図The figure which represented a part of electric wire with a terminal metal fitting concerning Embodiment 2 by the side section 端子金具付き電線の上面図Top view of wires with terminal fittings 被覆電線の端末部の上面図Top view of the end of the covered wire 端子金具の上面図Top view of terminal fitting 端子金具付き電線の製造方法を説明する図The figure explaining the manufacturing method of the electric wire with a terminal metal fitting 端子挿入孔に筒状端子部が挿入された状態を示す図The figure which shows the state by which the cylindrical terminal part was inserted in the terminal insertion hole かしめ方法を説明する図Diagram explaining the caulking method

符号の説明Explanation of symbols

10,110…端子金具付き電線
20…被覆電線
21…単芯線
22…絶縁被覆
23…扁平部
25,125…端子挿入孔
25A,125A…孔縁
30,130…端子金具
31…接続部
35…底板部
41…インシュレーションバレル部
41A…かしめ片
50,150…かしめ部
51,52…雄端子
51A,52A,151A…先端部
151…筒形端子部
DESCRIPTION OF SYMBOLS 10,110 ... Electric wire with a terminal metal fitting 20 ... Coated electric wire 21 ... Single core wire 22 ... Insulation coating 23 ... Flat part 25, 125 ... Terminal insertion hole 25A, 125A ... Hole edge 30,130 ... Terminal metal fitting 31 ... Connection part 35 ... Bottom plate Part 41 ... Insulation barrel part 41A ... Caulking piece 50, 150 ... Caulking part 51, 52 ... Male terminal 51A, 52A, 151A ... Tip part 151 ... Cylindrical terminal part

Claims (6)

単芯線を有し、この単芯線の端末部に端子挿入孔を貫通形成してなる電線と、
この電線の単芯線にかしめられた端子金具とからなり、
前記端子金具は、
相手側端子と電気的に接続される接続部と、
前記接続部から延出され前記単芯線の端末部が載置される底板部と、
前記底板部から突出した先端部が前記端子挿入孔を貫通するとともに、この先端部が前記端子挿入孔の孔縁にかしめられるかしめ部と、を備えることを特徴とする端子金具付き電線。
An electric wire having a single core wire and having a terminal insertion hole formed through the terminal portion of the single core wire;
It consists of a terminal fitting crimped to the single core wire of this wire,
The terminal fitting is
A connection part electrically connected to the counterpart terminal;
A bottom plate portion extending from the connecting portion and on which the terminal portion of the single core wire is placed;
An electric wire with a terminal fitting, comprising: a tip portion protruding from the bottom plate portion penetrating the terminal insertion hole, and a tip portion that is caulked to a hole edge of the terminal insertion hole.
前記かしめ部は、所定の厚みの金属板材が打ち抜かれることにより互いに反対方向に突出し、かつ、前記単芯線の軸方向に長い一対の雄端子が共に前記単芯線側に屈曲されることにより形成されていることを特徴とする請求項1記載の端子金具付き電線。 The caulking portion is formed by punching a metal plate having a predetermined thickness and projecting in opposite directions, and a pair of male terminals that are long in the axial direction of the single core wire are bent toward the single core wire. The electric wire with a terminal metal fitting according to claim 1. 前記かしめ部に加えて、前記電線の絶縁被覆の上から前記電線を保持する一対のかしめ片を有するインシュレーションバレル部を備えることを特徴とする請求項1又は請求項2に記載の端子金具付き電線。 The terminal fitting according to claim 1 or 2, further comprising an insulation barrel portion having a pair of caulking pieces for holding the electric wire from above the insulating coating of the electric wire in addition to the caulking portion. Electrical wire. 相手側端子と電気的に接続される接続部と、
前記接続部から延出され単芯線を有する電線の端末部が載置される底板部と、
前記底板部から突出した先端部が、前記端末部の単芯線に貫通形成された端子挿入孔を貫通可能とされるとともに、この先端部が前記端子挿入孔の孔縁にかしめられるかしめ部と、を備えることを特徴とする端子金具。
A connection part electrically connected to the counterpart terminal;
A bottom plate portion on which a terminal portion of an electric wire extending from the connection portion and having a single core wire is placed;
A tip portion protruding from the bottom plate portion is capable of penetrating a terminal insertion hole formed through the single core wire of the terminal portion, and a caulking portion that is crimped to a hole edge of the terminal insertion hole; A terminal fitting comprising:
前記かしめ部は、所定の厚みの金属板材が打ち抜かれることにより互いに反対方向に突出し、かつ、前記単芯線の軸方向に長い一対の雄端子が共に前記単芯線が配される側に屈曲されることにより形成されていることを特徴とする請求項4記載の端子金具。 The caulking portions protrude in opposite directions by punching a metal plate material having a predetermined thickness, and a pair of male terminals that are long in the axial direction of the single core wire are both bent toward the side where the single core wire is disposed. The terminal fitting according to claim 4, wherein the terminal fitting is formed. 前記かしめ部に加えて、前記電線の絶縁被覆の上から前記電線を保持する一対のかしめ片を有するインシュレーションバレル部を備えることを特徴とする請求項4又は請求項5に記載の端子金具。 The terminal fitting according to claim 4 or 5, further comprising an insulation barrel portion having a pair of caulking pieces for holding the electric wire from above the insulating coating of the electric wire in addition to the caulking portion.
JP2008248906A 2008-09-26 2008-09-26 Electric wires with terminal fittings and terminal fittings Expired - Fee Related JP5077697B2 (en)

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