JP2020087671A - Terminal connection structure - Google Patents

Terminal connection structure Download PDF

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JP2020087671A
JP2020087671A JP2018219419A JP2018219419A JP2020087671A JP 2020087671 A JP2020087671 A JP 2020087671A JP 2018219419 A JP2018219419 A JP 2018219419A JP 2018219419 A JP2018219419 A JP 2018219419A JP 2020087671 A JP2020087671 A JP 2020087671A
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terminal
core wire
spring
electric wire
wire
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JP7144290B2 (en
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和彦 吉江
Kazuhiko Yoshie
和彦 吉江
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Yazaki Corp
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Yazaki Corp
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Abstract

To provide a terminal connection structure that can be electrically connected to an electric wire end without crimping a terminal.SOLUTION: A terminal connection structure includes a housing 11 having a terminal accommodating chamber 17, a terminal 13 housed in the terminal accommodating chamber 17, an electric wire connecting portion 23 formed on the terminal 13, having a pair of side walls 35 and 47 facing each other, and connected to a core wire 33 of an electric wire end, a spring portion 37 formed on one side wall 35 so as to project inward of the electric wire connecting portion 23, and a pressing movable portion 45 that is formed on the other side wall 47 facing the spring portion 37 and sandwiches the core wire 33 with the spring portion 37 such that the inner wall 53 of the terminal accommodating chamber 17 presses and biases the terminal 13 when the terminal 13 is inserted into the terminal accommodating chamber 17.SELECTED DRAWING: Figure 1

Description

本発明は、端子接続構造に関する。 The present invention relates to a terminal connection structure.

小径サイズの電線に端子を圧着するに際し、固着力を安定させたり、耐衝撃強度を高めたりする工夫が提案されている。例えば特許文献1における圧着接続端子の導線圧着部には、U字状の弯曲部に沿って内側に凸状に膨らむ凸状部、外側に凹状に凹んだ凹状部が設けられ、内側の凸状部にそれぞれセレーションが弯曲部に沿って形成される。また、特許文献2の端子は、電線の被覆に圧着されるインシュレーションバレルの圧着面に凹部が設けられ、凹部の開口が後方に向かうにつれて狭まる形状とされている。 When crimping a terminal to a small-diameter wire, it has been proposed to stabilize the fixing force and increase the impact resistance. For example, the conductor wire crimping portion of the crimp connection terminal in Patent Document 1 is provided with a convex portion that bulges inward along a U-shaped curved portion and a concave portion that is concave outward, Serrations are formed on each of the portions along the curved portion. Further, the terminal of Patent Document 2 is provided with a recess on the crimping surface of the insulation barrel that is crimped to the wire coating, and the opening of the recess is narrowed toward the rear.

特開2010−44913号公報JP, 2010-44913, A 特開2016−164836号公報JP, 2016-164836, A

しかしながら、上記した従来の端子は、いずれも端子と電線の芯線(導体)を加締め型で圧着して接続する。このため、導体断面積が0.13mm2、0.08mm2等の極細電線と、これに固定する導体圧着部を備えた小型端子との組み合わせでは、小型端子における導体圧着部の製作も、加締め型の製作も困難となる。 However, in any of the above-described conventional terminals, the terminal and the core wire (conductor) of the electric wire are crimped by a crimping type to be connected. For this reason, in the combination of an ultrafine wire having a conductor cross-sectional area of 0.13 mm 2 , 0.08 mm 2, etc. and a small terminal equipped with a conductor crimping part to be fixed to this, the production of the conductor crimping part in the small terminal is also required. It is also difficult to make a tightening die.

本発明は上記状況に鑑みてなされたもので、その目的は、電線端末に端子を圧着することなく電気的に接続できる端子接続構造を提供することにある。 The present invention has been made in view of the above circumstances, and an object thereof is to provide a terminal connection structure that can be electrically connected to a wire terminal without crimping the terminal.

本発明に係る上記目的は、下記構成により達成される。
(1) 端子収容室を有するハウジングと、前記端子収容室に収容される端子と、前記端子に形成され対向する一対の側壁を有して電線端末の芯線に接続される電線接続部と、前記電線接続部の内方に突出するように一方の前記側壁に形成されたバネ部と、前記バネ部に対向する他方の前記側壁に形成されて前記端子が前記端子収容室に挿入されることにより前記端子収容室の内壁により押圧付勢されて前記バネ部との間で前記芯線を挟持する押圧可動部と、を備えることを特徴とする端子接続構造。
The above object according to the present invention is achieved by the following configurations.
(1) A housing having a terminal accommodating chamber, a terminal accommodated in the terminal accommodating chamber, an electric wire connecting portion having a pair of side walls formed on the terminal and facing each other, and connected to a core wire of an electric wire terminal, By inserting the terminal into the terminal accommodating chamber, the spring portion formed on one of the side walls so as to project inward of the electric wire connecting portion, and the terminal formed on the other side wall facing the spring portion. And a pressing movable portion that is pressed and urged by the inner wall of the terminal accommodating chamber to sandwich the core wire between the terminal housing chamber and the spring portion.

上記(1)の構成の端子接続構造によれば、電線端末の芯線に接続される電線接続部は、端子の対向する一対の側壁に設けられる。電線接続部の内方には、一方の側壁から他方の側壁に向かって突出するバネ部が形成される。バネ部は、一方の側壁に、例えば切り起こし加工により形成される。電線接続部のバネ部に対向する他方の側壁には、押圧可動部が形成される。押圧可動部は、端子がハウジングの端子収容室に挿入されると、端子収容室の内壁により、一方の側壁に向かって押圧付勢される。即ち、押圧可動部は、端子収容室への挿入前では、端子の他方の側壁から端子収容室の内壁に干渉する位置へ外側に向かって開いている。そして、押圧可動部は、端子が端子収容室に挿入される過程で、バネ部に接近する方向に閉じることとなる。これにより、電線接続部に配置された芯線は、端子が端子収容室に挿入されると、押圧可動部とバネ部とにより挟持される。電線接続部で挟持された芯線は、押圧可動部に押圧されることにより、バネ部を弾性変形させる。バネ部は、この際に生じた弾性復元力により芯線を所定の付勢力で押圧可動部と協働して挟持する。その結果、端子接続構造は、端子に導体圧着部を設けずに、電線端末を端子に容易に電気的に接続することができる。 According to the terminal connection structure of the above configuration (1), the electric wire connecting portion connected to the core wire of the electric wire terminal is provided on the pair of side walls facing each other of the terminal. A spring portion protruding from one side wall to the other side wall is formed inside the electric wire connecting portion. The spring portion is formed on one of the side walls, for example, by cutting and raising. A pressing movable portion is formed on the other side wall of the electric wire connecting portion that faces the spring portion. When the terminal is inserted into the terminal accommodating chamber of the housing, the pressing movable portion is pressed and urged toward one side wall by the inner wall of the terminal accommodating chamber. That is, the pressing movable portion is open outward from the other side wall of the terminal to a position where it interferes with the inner wall of the terminal accommodating chamber before being inserted into the terminal accommodating chamber. Then, the pressing movable portion closes in the direction of approaching the spring portion in the process of inserting the terminal into the terminal accommodating chamber. As a result, the core wire arranged in the wire connecting portion is sandwiched by the pressing movable portion and the spring portion when the terminal is inserted into the terminal accommodating chamber. The core wire sandwiched by the electric wire connecting portion is elastically deformed by the pressing movable portion to elastically deform the spring portion. The spring portion holds the core wire with a predetermined biasing force in cooperation with the pressing movable portion by the elastic restoring force generated at this time. As a result, the terminal connection structure can easily electrically connect the wire end to the terminal without providing a conductor crimping portion on the terminal.

(2) 前記バネ部が、前記端子の挿入方向側を自由先端部とするとともにその反対側を基端支持部とする片持ち梁状に形成され、前記自由先端部のエッジ部が、前記芯線に食い込むことを特徴とする上記(1)に記載の端子接続構造。 (2) The spring portion is formed in a cantilever shape in which the insertion direction side of the terminal is a free tip portion and the opposite side is a base end support portion, and an edge portion of the free tip portion is the core wire. The terminal connection structure according to (1) above, which is characterized in that it bites into.

上記(2)の構成の端子接続構造によれば、バネ部は、自由先端部が、挿入方向側を向いた片持ち梁状に形成されている。この自由先端部には、芯線に対向する側にエッジ部が形成される。これにより、芯線は、押圧可動部により押圧付勢されて、バネ部に当接すると、エッジ部が食い込んで塑性変形する。芯線は、電線に引っ張り方向の外力が作用した場合であっても、芯線に食い込んだエッジ部により、バネ部と係合状態となって、引っ張り力に抗することができる。また、バネ部は、エッジ部よりも引き抜き方向側の梁部が、基端支持部により支持されるので、梁部の軸方向に沿う大きな圧縮強度で引っ張り力に抗することができる。これにより、片持ち梁状のバネ部は、自由先端部と基端支持部とが逆配置される構造に比べ、高い抜け止め強度を確保できる。 According to the terminal connection structure having the configuration of (2) above, the free distal end portion of the spring portion is formed in a cantilever shape facing the insertion direction side. An edge portion is formed on the free tip portion on the side facing the core wire. As a result, when the core wire is pressed and biased by the pressing movable part and comes into contact with the spring part, the edge part bites into and is plastically deformed. Even when an external force in the pulling direction acts on the electric wire, the core wire is engaged with the spring portion by the edge portion that bites into the core wire and can withstand the pulling force. Further, since the beam portion of the spring portion on the pulling direction side of the edge portion is supported by the base end support portion, it is possible to resist the tensile force with a large compressive strength along the axial direction of the beam portion. As a result, the cantilevered spring portion can secure a higher retaining strength as compared with the structure in which the free front end portion and the base end support portion are arranged in reverse.

(3) 前記バネ部が、前記芯線の延在方向に沿って複数箇所設けられていることを特徴とする上記(1)または(2)に記載の端子接続構造。 (3) The terminal connection structure according to (1) or (2), wherein the spring portion is provided at a plurality of positions along the extending direction of the core wire.

上記(3)の構成の端子接続構造によれば、バネ部が、芯線の延在方向に沿って複数箇所設けられている。これにより、電線接続部と芯線との固定強度が、バネ部の数に比例して増大し、芯線をより抜けにくくできる。即ち、バネ部の増設により抜け止め力が増大するので、一定の抜け止め強度を満足すればよい場合には、バネ部の数を増やすことにより、個々のバネ部の食い込み量を小さくすることが可能となる。これにより、複数のバネ部を設けた端子接続構造によれば、バネ部が1つの場合に比べ、芯線の食い込み量を小さくして、芯線の損傷を抑制することができる。 According to the terminal connection structure having the above configuration (3), the spring portion is provided at a plurality of locations along the extending direction of the core wire. As a result, the fixing strength between the wire connecting portion and the core wire increases in proportion to the number of spring parts, and the core wire can be more difficult to come off. That is, since the retaining force increases due to the addition of the spring portions, if it is sufficient to satisfy a certain retaining strength, it is possible to reduce the bite amount of each spring portion by increasing the number of spring portions. It will be possible. As a result, according to the terminal connection structure provided with the plurality of spring parts, the biting amount of the core wire can be reduced and damage to the core wire can be suppressed as compared with the case where there is one spring part.

(4) 前記押圧可動部の揺動先端部には、前記電線端末の被覆に食い込む被覆固定爪が形成されていることを特徴とする上記(1)〜(3)のいずれか1つに記載の端子接続構造。 (4) A covering fixing claw that bites into a covering of the electric wire end is formed at a swinging tip end portion of the pressing movable portion, according to any one of the above (1) to (3). Terminal connection structure.

上記(4)の構成の端子接続構造によれば、押圧可動部の揺動先端部に、電線端末の被覆に食い込む被覆固定爪が形成される。この端子接続構造では、押圧可動部とバネ部とにより芯線が挟持されるのに加え、押圧可動部の被覆固定爪が電線端末の被覆に食い込む。このため、芯線のみをバネ部と押圧可動部とにより挟持する構成に比べ、より大きな挟持力で電線端末と端子とを接続できる。 According to the terminal connection structure of the above configuration (4), the cover fixing claw that bites into the cover of the wire end is formed at the swinging tip of the pressing movable part. In this terminal connection structure, in addition to the core wire being sandwiched between the pressing movable portion and the spring portion, the coating fixing claw of the pressing movable portion bites into the coating of the wire end. Therefore, as compared with the configuration in which only the core wire is sandwiched by the spring portion and the pressing movable portion, the wire terminal and the terminal can be connected with a greater clamping force.

本発明に係る端子接続構造によれば、電線端末と端子を圧着することなく電気的に接続できる。 According to the terminal connection structure of the present invention, the electric wire terminal and the terminal can be electrically connected without crimping.

以上、本発明について簡潔に説明した。更に、以下に説明される発明を実施するための形態(以下、「実施形態」という。)を添付の図面を参照して通読することにより、本発明の詳細は更に明確化されるであろう。 The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter, referred to as “embodiment”) with reference to the accompanying drawings. ..

本発明の第1実施形態に係る端子接続構造が適用される端子と電線の斜視図である。It is a perspective view of a terminal and an electric wire to which the terminal connection structure concerning a 1st embodiment of the present invention is applied. 図1に示した端子がハウジングの端子収容室に収容される前の斜視図である。It is a perspective view before the terminal shown in FIG. 1 is accommodated in the terminal accommodating chamber of a housing. (a)及び(b)は端子と電線の接続前の状態を説明するために端子の一部を切り欠いた平面図である。(A) And (b) is a top view which notched a part of terminal in order to explain the state before a connection of a terminal and an electric wire. 端子収容室に収容された端子及び電線の平断面図である。It is a plane sectional view of a terminal and an electric wire stored in a terminal storage room. (a)及び(b)は複数本の導体からなる芯線が押圧可動部とバネ部とに挟持されるときの説明図である。(A) And (b) is explanatory drawing when the core wire which consists of a some conductor is clamped by a press movable part and a spring part. 端子のバネ部が両持ち梁構造である場合の変形例を示す平断面図である。It is a plane sectional view showing a modification when a spring part of a terminal is a doubly supported beam structure. 端子のバネ部が両持ち梁構造である場合の他の変形例を示す平断面図である。FIG. 11 is a plan sectional view showing another modified example in which the spring portion of the terminal has a double-supported beam structure. 本発明の第2実施形態に係る端子接続構造が適用される端子及び電線の平断面図及び要部拡大図である。It is a plane sectional view of a terminal and an electric wire to which a terminal connecting structure concerning a 2nd embodiment of the present invention is applied, and an important section enlarged drawing.

以下、本発明に係る実施形態を図面を参照して説明する。
図1は本発明の第1実施形態に係る端子接続構造が適用される端子13と電線15の斜視図、図2は図1に示した端子13がハウジング11の端子収容室17に収容される前の斜視図である。
本第1実施形態に係る端子接続構造は、ハウジング11と、端子13と、電線15と、を主要な構成部材として有する。
Embodiments according to the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of a terminal 13 and an electric wire 15 to which the terminal connection structure according to the first embodiment of the present invention is applied, and FIG. 2 stores the terminal 13 shown in FIG. 1 in a terminal accommodating chamber 17 of a housing 11. It is a front perspective view.
The terminal connection structure according to the first embodiment has a housing 11, a terminal 13, and an electric wire 15 as main constituent members.

図2に示すように、ハウジング11は、絶縁性を有する合成樹脂により成形される。ハウジング11は、少なくとも一つの端子収容室17を有する。端子収容室17には、端子13が収容される。ハウジング11は、相手コネクタの相手ハウジングとの結合側が前面となる。ハウジング11の後端面には、端子収容室17の端子挿入開口部19が開口している。ハウジング11は、複数の端子収容室17が左右に設けられる場合、後端面に複数の端子挿入開口部19が横に開口する。 As shown in FIG. 2, the housing 11 is made of an insulating synthetic resin. The housing 11 has at least one terminal accommodating chamber 17. The terminal 13 is accommodated in the terminal accommodating chamber 17. The housing 11 has a front surface on the side where the mating connector is coupled to the mating housing. A terminal insertion opening 19 of the terminal accommodating chamber 17 is opened at the rear end surface of the housing 11. When a plurality of terminal accommodating chambers 17 are provided on the left and right sides of the housing 11, a plurality of terminal insertion openings 19 laterally open on the rear end surface.

図1に示すように、端子13は、相手コネクタに収容される相手端子との電気接触部21が、端子挿入開口部19への挿入方向の先端側に設けられている。端子13は、導電性を有し且つバネ性を有する金属(例えばリン青銅等)を好適に用いることができる。本第1実施形態において、端子13は、電気接触部21が箱形に形成される雌端子となる。端子13は、箱形に形成された電気接触部21の内側に、雄端子となる相手端子に形成された例えばタブ状の電気接触部が進入する。図示は省略するが、箱形の電気接触部21の内方には、雄端子のタブ状の電気接触部と接触する弾性接触片が設けられている。
なお、本第1実施形態に係る端子13は、タブ状の電気接触部を有した雄端子であってもよい。この場合、相手端子が雌端子となる。
As shown in FIG. 1, the terminal 13 is provided with an electric contact portion 21 with the mating terminal housed in the mating connector on the tip side in the insertion direction into the terminal insertion opening 19. For the terminal 13, a metal having conductivity and elasticity (for example, phosphor bronze) can be preferably used. In the first embodiment, the terminal 13 is a female terminal in which the electric contact portion 21 is formed in a box shape. In the terminal 13, for example, a tab-shaped electric contact portion formed on a mating terminal that is a male terminal enters the inside of the box-shaped electric contact portion 21. Although illustration is omitted, an elastic contact piece that comes into contact with the tab-shaped electric contact portion of the male terminal is provided inside the box-shaped electric contact portion 21.
The terminal 13 according to the first embodiment may be a male terminal having a tab-shaped electric contact portion. In this case, the mating terminal becomes a female terminal.

電気接触部21の後方には、電線接続部23が連設される。電線接続部23は、対向する一対の平行な側壁を有する。一対の側壁は、電気接触部21から挿入方向の後方に向けて延出して形成される。これら一対の側壁の下端同士は、電気接触部21から延出する底板部25により連結される。即ち、電線接続部23は、上方が開放した断面U字状に形成される。 An electric wire connecting portion 23 is continuously provided behind the electric contact portion 21. The electric wire connecting portion 23 has a pair of parallel side walls facing each other. The pair of side walls is formed to extend rearward from the electric contact portion 21 in the insertion direction. The lower ends of the pair of side walls are connected by a bottom plate portion 25 extending from the electric contact portion 21. That is, the wire connecting portion 23 is formed in a U-shaped cross section with an open upper side.

一対の側壁は、電気接触部21の上壁よりも上端が低く形成される。このため、電気接触部21の上壁後端と一対の側壁との間には、電気接触部21の上壁から一対の側壁の上端へ向かって一段下がった切欠状の段部が設けられる。本第1実施形態において、この段部は、端子13を端子収容室17から後方へ抜け止めするための係止部27となっている。 The upper ends of the pair of side walls are formed to be lower than the upper wall of the electric contact portion 21. Therefore, between the rear end of the upper wall of the electric contact portion 21 and the pair of side walls, a notch-shaped step portion is provided which is lowered by one step from the upper wall of the electric contact portion 21 toward the upper ends of the pair of side walls. In the first embodiment, this step portion serves as a locking portion 27 for preventing the terminal 13 from coming out of the terminal accommodating chamber 17 rearward.

一方、ハウジング11には、端子収容室17に係止先端が突出する可撓係止片(図示せず)が形成されている。可撓係止片は、挿入方向に向かうにしたがって端子収容室17へ突出する方向の傾斜面を有し、その先端には、上記した端子13の係止部27に係止する係止爪が形成される。これにより、端子13は、可撓係止片を押し上げて端子収容室17へ挿入される。端子13は、所定位置まで挿入されると、弾性復帰する可撓係止片の係止爪が、係止部27に係止することにより、後方への抜けが規制される。 On the other hand, the housing 11 is formed with a flexible locking piece (not shown) whose locking tip projects into the terminal accommodating chamber 17. The flexible locking piece has an inclined surface that projects toward the terminal accommodating chamber 17 in the insertion direction, and has a locking claw that locks to the locking portion 27 of the terminal 13 at the tip thereof. It is formed. As a result, the terminal 13 pushes up the flexible locking piece and is inserted into the terminal accommodating chamber 17. When the terminal 13 is inserted to a predetermined position, the locking claw of the flexible locking piece that elastically returns is locked to the locking portion 27, so that the terminal 13 is prevented from coming out backward.

なお、係止部27は、端子13の底板部25に、係止穴として形成されてもよい。この場合、可撓係止片は、端子収容室17の底板部25と対向する底側に配置される。
また、端子13の端子収容室17から後方への抜け止めは、ハウジングに装着されたリテーナによって係止部27を係止する構成とされてもよい。
The locking portion 27 may be formed in the bottom plate portion 25 of the terminal 13 as a locking hole. In this case, the flexible locking piece is arranged on the bottom side of the terminal accommodating chamber 17 facing the bottom plate portion 25.
Further, the retaining of the terminal 13 from the terminal accommodating chamber 17 to the rear side may be configured so that the retaining portion 27 is retained by the retainer attached to the housing.

電線15は、電線端末の被覆31が除去され、芯線33が所定長さで露出されている。芯線33は、例えば銅、アルミニウムとすることができる。電線15は、この露出された芯線33がU字状の電線接続部23に配置される。なお、本第1実施形態において、電線15は、導体断面積(芯線33の断面積)が0.13mm2、0.08mm2等の極細電線となる。電線15は、芯線33が複数の導体34からなる撚り線(図5の(a)参照)であっても、単線であってもよい。
また、本第1実施形態では、電線15が極細電線である場合を例に説明するが、電線15は、0.13mm2よりも大きい導体断面積を有する通常の太さの電線であってもよい。
In the electric wire 15, the coating 31 at the end of the electric wire is removed, and the core wire 33 is exposed in a predetermined length. The core wire 33 can be made of copper or aluminum, for example. In the electric wire 15, the exposed core wire 33 is arranged in the U-shaped electric wire connecting portion 23. In the first embodiment, the electric wire 15 is an ultrafine electric wire having a conductor cross-sectional area (cross-sectional area of the core wire 33) of 0.13 mm 2 , 0.08 mm 2, and the like. The electric wire 15 may be a stranded wire (see FIG. 5A) in which the core wire 33 includes a plurality of conductors 34, or may be a single wire.
In addition, in the first embodiment, the case where the electric wire 15 is an ultrafine electric wire will be described as an example, but the electric wire 15 may be an electric wire of a normal thickness having a conductor cross-sectional area larger than 0.13 mm 2. Good.

図3の(a)及び(b)は端子13と電線15の接続前の状態を説明するために端子13の一部を切り欠いた平面図である。
電線接続部23の一方の側壁35には、バネ部37が形成される。バネ部37は、電線接続部23の内方に突出するように一方の側壁35に形成される。バネ部37は、挿入方向側(図3中、左方向側)が電線接続部23の内方に突出する。具体的には、バネ部37は、図1に示すように、一方の側壁35に、挿入方向側に延在する一対のスリットの先端側同士が連結されたU字状の切欠を入れ、この切欠に囲まれた板片の自由先端部39を電線接続部23の内方へ折り曲げる(切り起こす)ことで加工される。なお、バネ部37の形成方法は、これに限定されない。バネ部37は、別体で形成したものを一方の側壁35に接合してもよい。これにより、バネ部37は、挿入方向側が自由先端部39、挿入方向側と反対側が基端支持部41となった片持ち梁状に形成される。
3A and 3B are plan views in which a part of the terminal 13 is cut out in order to explain the state before the connection between the terminal 13 and the electric wire 15.
A spring portion 37 is formed on one side wall 35 of the wire connecting portion 23. The spring portion 37 is formed on the one side wall 35 so as to project inward of the electric wire connecting portion 23. The insertion direction side (left side in FIG. 3) of the spring portion 37 projects inward of the electric wire connecting portion 23. Specifically, as shown in FIG. 1, the spring portion 37 has a U-shaped notch formed on one side wall 35 in which the tip ends of a pair of slits extending in the insertion direction are connected to each other. It is processed by bending (cutting and raising) the free end portion 39 of the plate piece surrounded by the notch inward of the electric wire connecting portion 23. The method of forming the spring portion 37 is not limited to this. The spring portion 37 may be formed separately and joined to the one side wall 35. As a result, the spring portion 37 is formed in a cantilever shape with the free distal end portion 39 on the insertion direction side and the base end support portion 41 on the opposite side to the insertion direction side.

片持ち梁状に形成されたバネ部37の自由先端部39は、例えばプレス加工により打ち抜きされることで、輪郭部分に鋭いエッジ部43を有する。また、エッジ部43は、プレス加工により発生するバリを含むことができる。バネ部37は、エッジ部43を有することで、後述する作用により、芯線33への食い込みを良好にできる。 The free tip portion 39 of the spring portion 37 formed in a cantilever shape has a sharp edge portion 43 in the contour portion by being punched out by, for example, press working. In addition, the edge portion 43 can include burrs generated by press working. Since the spring portion 37 has the edge portion 43, the spring portion 37 can dig into the core wire 33 favorably by the action described later.

バネ部37は、芯線33の延在方向に沿って複数箇所設けられている。本第1実施形態では、2つのバネ部37が形成されている。なお、バネ部37は、一つであっても、3つ以上の複数であってもよい。 The spring portions 37 are provided at a plurality of locations along the extending direction of the core wire 33. In the first embodiment, two spring portions 37 are formed. In addition, the number of the spring portions 37 may be one or may be three or more.

押圧可動部45は、バネ部37に対向する他方の側壁47に形成される。押圧可動部45は、他方の側壁47の上部が、底板部側と切り離されることにより短冊状に形成されている。押圧可動部45は、電気接触部21に、折り曲げ部49を介して接続されている。押圧可動部45は、折り曲げ部49から挿入方向と反対側に延出されており、この延出方向先端(即ち、端子13の後端側)が可動部自由端51とされている。押圧可動部45は、折り曲げ部49を揺動中心として、可動部自由端51がバネ部37に対して離反・接近する方向(以下、開閉方向とも称す)に揺動可能となっている。 The pressing movable portion 45 is formed on the other side wall 47 facing the spring portion 37. The pressing movable portion 45 is formed in a strip shape by separating the upper portion of the other side wall 47 from the bottom plate portion side. The pressing movable portion 45 is connected to the electric contact portion 21 via a bent portion 49. The pressing movable portion 45 extends from the bent portion 49 to the side opposite to the insertion direction, and the tip in the extending direction (that is, the rear end side of the terminal 13) is the movable portion free end 51. The pressing movable portion 45 can swing about the bending portion 49 as a swing center in a direction (hereinafter, also referred to as an opening/closing direction) in which the movable portion free end 51 moves away from/approaches the spring portion 37.

図4は端子収容室17に収容された端子13及び電線15の平断面図である。
図4に示すように、押圧可動部45は、端子13がハウジング11の端子収容室17に挿入されると、端子収容室17の内壁53により押圧付勢される。これにより、押圧可動部45は、バネ部37との間で芯線33を挟持できるように形成されている。
FIG. 4 is a plan sectional view of the terminal 13 and the electric wire 15 housed in the terminal housing chamber 17.
As shown in FIG. 4, when the terminal 13 is inserted into the terminal accommodating chamber 17 of the housing 11, the pressing movable portion 45 is pressed and biased by the inner wall 53 of the terminal accommodating chamber 17. As a result, the pressing movable portion 45 is formed so that the core wire 33 can be sandwiched between the pressing movable portion 45 and the spring portion 37.

バネ部37は、上記したように、端子13の挿入方向側を自由先端部39とするとともに、その反対側を基端支持部41とする片持ち梁状に形成されている。電線接続部23は、バネ部37のエッジ部43と、他方の側壁47と面一となった押圧可動部45との間隔が、芯線33の直径よりも小さく設定されている。このため、バネ部37は、端子13が端子収容室17へ挿入されると、押圧可動部45により芯線33が押し付けられ、自由先端部39のエッジ部43が、芯線33に食い込むようになされている。
その結果、一対の対向する側壁を有した端子13の電線接続部23は、電線端末の芯線33に接続される。
As described above, the spring portion 37 is formed in a cantilever shape with the free end portion 39 on the insertion direction side of the terminal 13 and the base end support portion 41 on the opposite side. In the wire connecting portion 23, the distance between the edge portion 43 of the spring portion 37 and the pressing movable portion 45 which is flush with the other side wall 47 is set smaller than the diameter of the core wire 33. For this reason, in the spring portion 37, when the terminal 13 is inserted into the terminal accommodating chamber 17, the core wire 33 is pressed by the pressing movable portion 45, and the edge portion 43 of the free distal end portion 39 bites into the core wire 33. There is.
As a result, the wire connecting portion 23 of the terminal 13 having a pair of opposing side walls is connected to the core wire 33 of the wire terminal.

次に、端子接続構造の組付け手順を説明する。
電線15を端子13に組付けるには、先ず、図3の(a)に示すように、電線端末で被覆31が除去された芯線33を、端子13の電線接続部23の内方に挿入する。芯線33は、図3の(b)に示すように、電線接続部23の複数のバネ部37に当接した位置に配置され。この際、押圧可動部45は、図3の(b)に示すように、折り曲げ部49の近傍を除いて芯線33から殆ど離れている状態(開放状態)となる。
Next, the procedure for assembling the terminal connection structure will be described.
To assemble the electric wire 15 to the terminal 13, first, as shown in FIG. 3A, the core wire 33 from which the coating 31 has been removed at the electric wire end is inserted into the electric wire connecting portion 23 of the terminal 13. .. As shown in FIG. 3B, the core wire 33 is arranged at a position in contact with the plurality of spring portions 37 of the electric wire connecting portion 23. At this time, as shown in FIG. 3B, the pressing movable portion 45 is in a state (open state) almost apart from the core wire 33 except for the vicinity of the bent portion 49.

端子13は、図2に示すように、例えば押圧可動部45がバネ部37に接近する方向に保持されて芯線33を仮挟持した状態で、ハウジング11の後端面に開口する端子挿入開口部19より挿入される。端子13は、電気接触部21が先ず端子挿入開口部19に挿入された後、更に挿入されると、外側に開いた押圧可動部45が、端子挿入開口部19の開口縁に当接する。端子挿入開口部19の開口縁に押圧可動部45が当接した端子13は、更に挿入されることにより、押圧可動部45がバネ部37に接近する方向に閉動される。 As shown in FIG. 2, the terminal 13 is, for example, held in a direction in which the pressing movable portion 45 approaches the spring portion 37 and temporarily holds the core wire 33, and the terminal insertion opening portion 19 is opened to the rear end surface of the housing 11. More inserted. In the terminal 13, when the electric contact portion 21 is first inserted into the terminal insertion opening portion 19 and then further inserted, the pressing movable portion 45 opened to the outside comes into contact with the opening edge of the terminal insertion opening portion 19. The terminal 13 in which the pressing movable portion 45 is in contact with the opening edge of the terminal insertion opening 19 is further inserted, so that the pressing movable portion 45 is closed in the direction toward the spring portion 37.

図4に示すように、端子13が、端子収容室17の所定位置まで挿入されると、電気接触部21の後端に設けられた係止部27に、図示しない可撓係止片が係止する。これにより、端子13は、後抜けが規制される。この際、押圧可動部45は、端子収容室17の内壁53と平行となる状態まで閉動され、内壁53からの反力により押圧された状態となる。内壁53から押圧された押圧可動部45は、芯線33をバネ部37に押圧する。 As shown in FIG. 4, when the terminal 13 is inserted to a predetermined position in the terminal accommodating chamber 17, a flexible locking piece (not shown) engages with the locking portion 27 provided at the rear end of the electric contact portion 21. Stop. As a result, the terminal 13 is restricted from falling out. At this time, the pressing movable portion 45 is closed until it becomes parallel to the inner wall 53 of the terminal accommodating chamber 17, and is pressed by the reaction force from the inner wall 53. The pressing movable part 45 pressed from the inner wall 53 presses the core wire 33 against the spring part 37.

バネ部37は、芯線33から押圧されることにより、電線接続部23の外側へ弾性変位すると共に、エッジ部43が芯線33に食い込む。これにより、端子13のハウジング11への収容が完了すると同時に、端子13と電線15との接続が完了する。 The spring portion 37 is elastically displaced to the outside of the wire connecting portion 23 by being pressed by the core wire 33, and the edge portion 43 bites into the core wire 33. As a result, the housing of the terminal 13 in the housing 11 is completed, and at the same time, the connection between the terminal 13 and the electric wire 15 is completed.

図5の(a)及び(b)は複数本の導体34からなる芯線33が押圧可動部45とバネ部37とに挟持されるときの説明図である。
芯線33は、図5の(a)及び(b)に示すように、複数本(図示例では7本)が束ねられた撚り線である場合、押圧可動部45とバネ部37とにより挟持されると、押圧可動部45の押圧面と平行にほぐされる。芯線33は、ほぐされることで、1本1本が押圧可動部45の押圧面と平行となって並び、それぞれにバネ部37のエッジ部43が食い込む。
5A and 5B are explanatory diagrams when the core wire 33 including the plurality of conductors 34 is sandwiched between the pressing movable portion 45 and the spring portion 37.
As shown in FIGS. 5A and 5B, when the core wire 33 is a stranded wire formed by bundling a plurality of wires (7 wires in the illustrated example), the core wire 33 is sandwiched between the pressing movable portion 45 and the spring portion 37. Then, it is loosened in parallel with the pressing surface of the pressing movable portion 45. When the core wires 33 are loosened, the core wires 33 are aligned in parallel with the pressing surface of the pressing movable portion 45, and the edge portion 43 of the spring portion 37 bites into each of them.

次に、上記した第1実施形態に係る端子接続構造の作用を説明する。
本第1実施形態に係る端子接続構造では、電線15の電線端末の芯線33に接続されている電線接続部23は、端子13の対向する一対の側壁35,47に設けられる。電線接続部23の内方には、一方の側壁35から他方の側壁47に向かって突出するバネ部37が形成される。バネ部37は、一方の側壁35に、例えば切り起こし加工により形成される。
Next, the operation of the terminal connection structure according to the first embodiment described above will be described.
In the terminal connection structure according to the first embodiment, the electric wire connecting portion 23 connected to the core wire 33 of the electric wire end of the electric wire 15 is provided on the pair of side walls 35 and 47 of the terminal 13 facing each other. A spring portion 37 that protrudes from one side wall 35 toward the other side wall 47 is formed inside the electric wire connecting portion 23. The spring portion 37 is formed on the one side wall 35 by, for example, a cut and raised process.

電線接続部23のバネ部37に対向する他方の側壁47には、押圧可動部45が形成される。押圧可動部45は、端子13がハウジング11の端子収容室17に挿入されると、端子収容室17の内壁53により、一方の側壁35に向かって押圧付勢される。即ち、押圧可動部45は、端子収容室17への挿入前では、端子13の他方の側壁47から端子収容室17の内壁53に干渉する位置へ外側に向かって開いている。そして、押圧可動部45は、端子13が端子収容室17に挿入される過程で、バネ部37に接近する方向に閉じることとなる。これにより、電線接続部23に配置された芯線33は、端子13が端子収容室17に挿入されると、押圧可動部45とバネ部37とにより挟持される。 A pressing movable portion 45 is formed on the other side wall 47 of the wire connecting portion 23 facing the spring portion 37. When the terminal 13 is inserted into the terminal accommodating chamber 17 of the housing 11, the pressing movable portion 45 is pressed and urged toward the one side wall 35 by the inner wall 53 of the terminal accommodating chamber 17. That is, the pressing movable portion 45 is opened outward to the position where it interferes with the inner wall 53 of the terminal accommodating chamber 17 from the other side wall 47 of the terminal 13 before being inserted into the terminal accommodating chamber 17. Then, the pressing movable portion 45 closes in the direction of approaching the spring portion 37 in the process of inserting the terminal 13 into the terminal accommodating chamber 17. As a result, the core wire 33 arranged in the wire connecting portion 23 is sandwiched between the pressing movable portion 45 and the spring portion 37 when the terminal 13 is inserted into the terminal accommodating chamber 17.

電線接続部23で挟持された芯線33は、押圧可動部45に押圧されることにより、バネ部37を弾性変形させる。バネ部37は、この際に生じた弾性復元力により芯線33を所定の付勢力で押圧可動部45と協働して挟持する。その結果、端子接続構造は、端子13に導体圧着部を設けずに、電線端末を端子13に容易に電気的に接続することができる。 The core wire 33 sandwiched by the wire connecting portion 23 is elastically deformed by the pressing movable portion 45 to elastically deform the spring portion 37. The spring portion 37 clamps the core wire 33 with a predetermined biasing force in cooperation with the pressing movable portion 45 by the elastic restoring force generated at this time. As a result, the terminal connection structure can easily electrically connect the wire end to the terminal 13 without providing a conductor crimping portion on the terminal 13.

また、本第1実施形態の端子接続構造では、バネ部37は、自由先端部39が、挿入方向側を向いた片持ち梁状に形成されている。この自由先端部39には、芯線33に対向する側にエッジ部43が形成される。これにより、芯線33は、押圧可動部45により押圧付勢されて、バネ部37に当接すると、エッジ部43が食い込んで塑性変形する。芯線33は、電線15に引っ張り方向の外力が作用した場合であっても、芯線33に食い込んだエッジ部43により、バネ部37と確実に係合状態となって、引っ張り力に抗することができる。 Further, in the terminal connection structure of the first embodiment, the free tip portion 39 of the spring portion 37 is formed in a cantilever shape facing the insertion direction side. An edge portion 43 is formed on the free tip portion 39 on the side facing the core wire 33. As a result, when the core wire 33 is pressed and urged by the pressing movable portion 45 and comes into contact with the spring portion 37, the edge portion 43 bites into and is plastically deformed. Even when an external force is applied to the electric wire 15 in the pulling direction, the core wire 33 is reliably engaged with the spring portion 37 by the edge portion 43 that bites into the core wire 33 and resists the pulling force. it can.

また、バネ部37は、エッジ部43よりも引き抜き方向側の梁部が、基端支持部41により支持されるので、梁部の軸方向に沿う大きな圧縮強度で引っ張り力に抗することができる。これにより、片持ち梁状のバネ部37は、自由先端部39と基端支持部41とが逆配置される構造に比べ、高い抜け止め強度を確保することができる。 Further, in the spring portion 37, since the beam portion on the pull-out direction side of the edge portion 43 is supported by the base end support portion 41, the tensile force can be resisted with a large compressive strength along the axial direction of the beam portion. .. As a result, the cantilevered spring portion 37 can secure a higher retaining strength as compared with the structure in which the free front end portion 39 and the base end support portion 41 are arranged in reverse.

また、本第1実施形態の端子接続構造では、バネ部37が、芯線33の延在方向に沿って複数箇所設けられている。これにより、電線接続部23と芯線33との固定強度が、バネ部37の数に比例して増大し、芯線33をより抜けにくくできる。即ち、バネ部37の増設により抜け止め力が増大するので、一定の抜け止め強度を満足すればよい場合には、バネ部37の数を増やすことにより、個々のバネ部37の食い込み量を小さくすることが可能となる。これにより、複数のバネ部37を設けた端子接続構造では、バネ部37が1つの場合に比べ、芯線33の食い込み量を小さくして、芯線33の損傷を抑制することができる。 In addition, in the terminal connection structure of the first embodiment, the spring portions 37 are provided at a plurality of locations along the extending direction of the core wire 33. As a result, the fixing strength between the wire connecting portion 23 and the core wire 33 increases in proportion to the number of the spring portions 37, and the core wire 33 can be made more difficult to come off. That is, since the retaining force is increased by adding the spring portions 37, if it is sufficient to satisfy a certain retaining strength, the number of the spring portions 37 is increased to reduce the biting amount of each spring portion 37. It becomes possible to do. As a result, in the terminal connection structure in which the plurality of spring portions 37 are provided, the amount of biting of the core wire 33 can be reduced and damage to the core wire 33 can be suppressed as compared with the case where there is one spring portion 37.

次に、上記した第1実施形態に係る端子接続構造の変形例を説明する。
図6は端子13Aのバネ部55が両持ち梁構造である場合の変形例を示す平断面図である。
上記の実施形態では、端子13のバネ部37が片持ち梁状である場合を説明したが、例えば、図6に示す両持ち梁状として端子13Aのバネ部55を形成することもできる。この場合、両持ち梁状のバネ部55は、芯線33との接触面57に、微小凹凸部(セレーション等)を形成することが好ましい。両持ち梁状のバネ部55は、押圧可動部45により芯線33が押し付けられると、弾性変形し、その弾性復元力により押圧可動部45と協働して芯線33を挟持する。この変形例によれば、芯線33と接触する接触面積を大きく確保することができる。
Next, a modified example of the terminal connection structure according to the first embodiment described above will be described.
FIG. 6 is a plan sectional view showing a modified example in which the spring portion 55 of the terminal 13A has a doubly supported beam structure.
Although the case where the spring portion 37 of the terminal 13 has a cantilever shape has been described in the above embodiment, for example, the spring portion 55 of the terminal 13A can be formed in a cantilever shape as shown in FIG. In this case, it is preferable that the doubly supported beam-shaped spring portion 55 has a minute concavo-convex portion (serration or the like) formed on the contact surface 57 with the core wire 33. When the core wire 33 is pressed by the pressing movable portion 45, the doubly supported beam-shaped spring portion 55 elastically deforms and clamps the core wire 33 in cooperation with the pressing movable portion 45 by its elastic restoring force. According to this modification, it is possible to secure a large contact area for contacting the core wire 33.

次に、上記した第1実施形態に係る端子接続構造の他の変形例を説明する。
図7は端子13Bのバネ部55Aが両持ち梁構造である場合の他の変形例を示す平断面図である。
図7に示す端子13Bは、芯線33の延在方向に延びる両持ち梁状のバネ部55Aに、片持ち梁状のバネ部37Aが形成されている。バネ部37Aは、電線接続部23の内方に突出するようにバネ部55Aの接触面57に形成される。バネ部37Aの自由先端部39は、輪郭部分にエッジ部43を有する。なお、バネ部37Aは、芯線33の延在方向に沿って一箇所設けられているが、2つ以上の複数であってもよい。
Next, another modified example of the terminal connection structure according to the first embodiment described above will be described.
FIG. 7 is a plan sectional view showing another modified example in which the spring portion 55A of the terminal 13B has a double-supported beam structure.
In the terminal 13B shown in FIG. 7, a cantilever beam-shaped spring portion 37A is formed on a cantilever beam-shaped spring portion 55A extending in the extending direction of the core wire 33. The spring portion 37A is formed on the contact surface 57 of the spring portion 55A so as to project inward of the electric wire connecting portion 23. The free tip portion 39 of the spring portion 37A has an edge portion 43 in the contour portion. Note that the spring portion 37A is provided at one location along the extending direction of the core wire 33, but may be a plurality of two or more.

この場合、電線接続部23で挟持された芯線33は、押圧可動部45に押圧されることにより、バネ部37A及びバネ部55Aを弾性変形させる。バネ部37A及びバネ部55Aは、この際に生じた弾性復元力により芯線33を所定の付勢力で押圧可動部45と協働して挟持する。押圧可動部45により芯線33が押し付けられると、バネ部37Aのエッジ部43は芯線33に食い込む。
従って、例えば電線接続部23における一対の側壁35,47の間隔に対して導体断面積(芯線33の断面積)が小さい電線であっても、電線端末の芯線33に接続された端子13Bの電線接続部23は、高い抜け止め強度を確保しつつ、芯線33と接触する接触圧力を大きく確保することができる。
In this case, the core wire 33 sandwiched by the electric wire connecting portion 23 is pressed by the pressing movable portion 45, thereby elastically deforming the spring portion 37A and the spring portion 55A. The spring portion 37A and the spring portion 55A sandwich the core wire 33 by a predetermined biasing force in cooperation with the pressing movable portion 45 by the elastic restoring force generated at this time. When the core wire 33 is pressed by the pressing movable portion 45, the edge portion 43 of the spring portion 37A bites into the core wire 33.
Therefore, for example, even if the electric wire has a small conductor cross-sectional area (cross-sectional area of the core wire 33) with respect to the distance between the pair of side walls 35 and 47 in the electric wire connecting portion 23, the electric wire of the terminal 13B connected to the core wire 33 of the electric wire end. The connecting portion 23 can secure a large contact pressure for contacting the core wire 33 while securing a high retaining strength.

図8は本発明の第2実施形態に係る端子接続構造が適用される端子13C及び電線15の平断面図及び要部拡大図である。
上記の第1実施形態では、押圧可動部45が、芯線33のみを押圧する構成としたが、本第2実施形態に係る端子接続構造のように、押圧可動部61は、電線15の被覆31も同時に押圧する構成としてもよい。この場合、押圧可動部61は、揺動先端に、被覆31に食い込む被覆固定爪59が形成される。
FIG. 8 is a plan sectional view and an enlarged view of a main part of a terminal 13C and an electric wire 15 to which the terminal connection structure according to the second embodiment of the present invention is applied.
In the above-described first embodiment, the pressing movable portion 45 is configured to press only the core wire 33, but like the terminal connection structure according to the second embodiment, the pressing movable portion 61 includes the coating 31 of the electric wire 15. May be pressed simultaneously. In this case, the pressing movable portion 61 is formed with a coating fixing claw 59 that bites into the coating 31 at the swinging tip.

図8に示すように、被覆固定爪59は、押圧可動部61の揺動先端が、例えば被覆31に向けて屈曲させたフック状に形成される。被覆固定爪59は、芯線33の円周方向における複数箇所で接触するように(V溝内に挟み入れられるように)、複数を設けてもよい。これにより、被覆固定爪59は、被覆31を挟みながら被覆31に食い込むことで、高い保持力を得ることができる。 As shown in FIG. 8, the covering fixing claw 59 is formed such that the swinging tip of the pressing movable portion 61 is bent toward the covering 31, for example. A plurality of the covering fixing claws 59 may be provided so as to come into contact with each other at a plurality of positions in the circumferential direction of the core wire 33 (so as to be sandwiched in the V groove). As a result, the covering fixing claw 59 can obtain a high holding force by biting into the covering 31 while sandwiching the covering 31.

また、被覆固定爪59を備えた押圧可動部61の場合には、被覆固定爪59よりも端子13Cの挿入方向側に、被覆固定爪59よりも芯線33に接近して突出する芯線押圧凸部63を設けることがより好ましい。これにより、押圧可動部61は、被覆固定爪59が被覆31に食い込む場合であっても、芯線押圧凸部63により適宜な押圧力で芯線33を同時にバネ部37に押しつけることが可能となる。 Further, in the case of the pressing movable portion 61 provided with the covering fixing claw 59, the core wire pressing convex portion protruding closer to the core wire 33 than the covering fixing claw 59 toward the insertion direction side of the terminal 13C than the covering fixing claw 59. It is more preferable to provide 63. As a result, the pressing movable portion 61 can simultaneously press the core wire 33 against the spring portion 37 with an appropriate pressing force by the core wire pressing convex portion 63 even when the covering fixing claw 59 bites into the covering 31.

そして、本第2実施形態に係る端子接続構造によれば、押圧可動部61とバネ部37とにより芯線33が挟持されるのに加え、押圧可動部61の被覆固定爪59が電線端末の被覆31に食い込む。このため、芯線33のみをバネ部37と押圧可動部45とにより挟持する上記第1実施形態に係る端子接続構造の構成に比べ、より大きな挟持力で電線端末と端子13Cとを接続できる。 Further, according to the terminal connection structure according to the second embodiment, in addition to the core wire 33 being sandwiched between the pressing movable portion 61 and the spring portion 37, the covering fixing claw 59 of the pressing movable portion 61 covers the electric wire terminal. Cut into 31. Therefore, as compared with the configuration of the terminal connection structure according to the first embodiment in which only the core wire 33 is sandwiched by the spring portion 37 and the pressing movable portion 45, the wire terminal and the terminal 13C can be connected with a greater clamping force.

また、本第2実施形態に係る端子接続構造では、押圧可動部61が、被覆固定爪59よりも端子13Cの挿入方向側に芯線押圧凸部63を有してもよい。芯線押圧凸部63は、被覆固定爪59よりも芯線33に接近して突出する。押圧可動部61は、芯線押圧凸部63が設けられることにより、被覆固定爪59が被覆31に食い込んだ際に、押圧可動部61と芯線33との間に、間隙の生じることを防止できる。これにより、本第2実施形態に係る端子接続構造は、被覆固定爪59を被覆31に食い込ませると同時に、押圧可動部61の芯線押圧凸部63を所定の押圧力で芯線33に押圧することができる。その結果、本第2実施形態に係る端子接続構造は、被覆固定爪59を設けることによる芯線33への押圧力低下を抑制でき、芯線33と被覆31とを共に最適な挟持力で保持することが可能となる。 Further, in the terminal connection structure according to the second embodiment, the pressing movable portion 61 may have the core wire pressing convex portion 63 on the insertion direction side of the terminal 13C with respect to the covering fixing claw 59. The core wire pressing convex portion 63 projects closer to the core wire 33 than the covering fixing claw 59. By providing the core wire pressing convex portion 63, the pressing movable portion 61 can prevent a gap from being generated between the pressing movable portion 61 and the core wire 33 when the coating fixing claw 59 bites into the coating 31. As a result, in the terminal connection structure according to the second embodiment, the covering fixing claw 59 is made to bite into the covering 31, and at the same time, the core wire pressing convex portion 63 of the pressing movable portion 61 is pressed against the core wire 33 with a predetermined pressing force. You can As a result, the terminal connection structure according to the second embodiment can suppress the pressing force drop to the core wire 33 due to the provision of the cover fixing claw 59, and hold both the core wire 33 and the cover 31 with an optimum clamping force. Is possible.

従って、上記各実施形態に係る端子接続構造によれば、電線15と端子13,13A,13B,13Cを圧着することなく電気的に接続できる。 Therefore, according to the terminal connection structure according to each of the above-described embodiments, the electric wire 15 and the terminals 13, 13A, 13B, 13C can be electrically connected without crimping.

尚、本発明は、上述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。その他、上述した実施形態における各構成要素の材質、形状、寸法、数、配置箇所、等は本発明を達成できるものであれば任意であり、限定されない。 It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, etc. can be appropriately made. In addition, the materials, shapes, dimensions, numbers, locations, etc. of the constituent elements in the above-described embodiments are arbitrary and are not limited as long as the present invention can be achieved.

ここで、上述した本発明に係る端子接続構造の実施形態の特徴をそれぞれ以下[1]〜[4]に簡潔に纏めて列記する。
[1] 端子収容室(17)を有するハウジング(11)と、
前記端子収容室に収容される端子(13,13A,13B,13C)と、
前記端子に形成され対向する一対の側壁(35,47)を有して電線端末の芯線(33)に接続される電線接続部(23)と、
前記電線接続部の内方に突出するように一方の前記側壁(35)に形成されたバネ部(37,37A,55,55A)と、
前記バネ部に対向する他方の前記側壁(47)に形成されて前記端子が前記端子収容室に挿入されることにより前記端子収容室の内壁(53)により押圧付勢されて前記バネ部との間で前記芯線を挟持する押圧可動部(45,61)と、
を備えることを特徴とする端子接続構造。
[2] 前記バネ部(37,37A)が、前記端子(13、13B)の挿入方向側を自由先端部(39)とするとともにその反対側を基端支持部(41)とする片持ち梁状に形成され、
前記自由先端部のエッジ部(43)が、前記芯線(33)に食い込む
ことを特徴とする上記[1]に記載の端子接続構造。
[3] 前記バネ部(37)が、前記芯線(33)の延在方向に沿って複数箇所設けられている
ことを特徴とする上記[1]または[2]に記載の端子接続構造。
[4] 前記押圧可動部(61)の揺動先端部には、前記電線端末の被覆(31)に食い込む被覆固定爪(59)が形成されている
ことを特徴とする上記[1]〜[3]のいずれか1つに記載の端子接続構造。
Here, the features of the above-described embodiment of the terminal connection structure according to the present invention will be briefly summarized and listed below in [1] to [4].
[1] A housing (11) having a terminal accommodating chamber (17),
Terminals (13, 13A, 13B, 13C) housed in the terminal housing chamber,
An electric wire connecting portion (23) formed on the terminal and having a pair of side walls (35, 47) facing each other and connected to a core wire (33) of an electric wire end;
A spring part (37, 37A, 55, 55A) formed on the one side wall (35) so as to project inward of the electric wire connection part;
When the terminal is formed on the other side wall (47) facing the spring part and the terminal is inserted into the terminal accommodating chamber, the terminal part is pressed and urged by the inner wall (53) of the terminal accommodating chamber. A pressing movable part (45, 61) for sandwiching the core wire between them,
A terminal connection structure comprising:
[2] A cantilever in which the spring portion (37, 37A) has a free distal end portion (39) on the insertion direction side of the terminal (13, 13B) and a base end support portion (41) on the opposite side. Formed into a
The terminal connection structure according to the above [1], wherein the edge portion (43) of the free tip portion bites into the core wire (33).
[3] The terminal connection structure according to the above [1] or [2], wherein the spring portion (37) is provided at a plurality of locations along the extending direction of the core wire (33).
[4] A covering fixing claw (59) that digs into the covering (31) of the wire end is formed at the swinging tip of the pressing movable part (61). [3] The terminal connection structure according to any one of [3].

11…ハウジング
13…端子
17…端子収容室
23…電線接続部
31…被覆
33…芯線
35…一方の側壁
37…バネ部
39…自由先端部
41…基端支持部
43…エッジ部
45…押圧可動部
47…他方の側壁
53…内壁
11... Housing 13... Terminal 17... Terminal accommodating chamber 23... Electric wire connection portion 31... Coating 33... Core wire 35... One side wall 37... Spring portion 39... Free tip portion 41... Base end support portion 43... Edge portion 45... Press movable Part 47... Other side wall 53... Inner wall

Claims (4)

端子収容室を有するハウジングと、
前記端子収容室に収容される端子と、
前記端子に形成され対向する一対の側壁を有して電線端末の芯線に接続される電線接続部と、
前記電線接続部の内方に突出するように一方の前記側壁に形成されたバネ部と、
前記バネ部に対向する他方の前記側壁に形成されて前記端子が前記端子収容室に挿入されることにより前記端子収容室の内壁により押圧付勢されて前記バネ部との間で前記芯線を挟持する押圧可動部と、
を備えることを特徴とする端子接続構造。
A housing having a terminal accommodating chamber,
A terminal housed in the terminal housing chamber,
An electric wire connecting portion formed on the terminal and having a pair of side walls facing each other and connected to a core wire of an electric wire terminal,
A spring portion formed on one of the side walls so as to project inward of the electric wire connection portion;
When the terminal is formed on the other side wall facing the spring portion and the terminal is inserted into the terminal accommodating chamber, it is pressed and urged by the inner wall of the terminal accommodating chamber to sandwich the core wire with the spring portion. Pressing movable part to
A terminal connection structure comprising:
前記バネ部が、前記端子の挿入方向側を自由先端部とするとともにその反対側を基端支持部とする片持ち梁状に形成され、
前記自由先端部のエッジ部が、前記芯線に食い込む
ことを特徴とする請求項1に記載の端子接続構造。
The spring portion is formed in a cantilever shape with the free end portion on the insertion direction side of the terminal and the base end support portion on the opposite side,
The terminal connection structure according to claim 1, wherein an edge portion of the free tip portion bites into the core wire.
前記バネ部が、前記芯線の延在方向に複数箇所設けられている
ことを特徴とする請求項1または請求項2に記載の端子接続構造。
The terminal connection structure according to claim 1 or 2, wherein the spring portion is provided at a plurality of positions in the extending direction of the core wire.
前記押圧可動部の揺動先端部に、前記電線端末の被覆に食い込む被覆固定爪が形成されている
ことを特徴とする請求項1〜請求項3のいずれか1項に記載の端子接続構造。
The terminal fixing structure according to any one of claims 1 to 3, wherein a coating fixing claw that bites into a coating of the wire end is formed at a swinging tip portion of the pressing movable portion.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021077510A (en) * 2019-11-07 2021-05-20 古河電気工業株式会社 Connection structure, connection structure with housing, and terminal

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JPS60221977A (en) * 1983-12-29 1985-11-06 ト−マス アンド ベツツ コ−ポレ−シヨン Connector for cable terminal
JP2001230010A (en) * 2000-02-21 2001-08-24 Yazaki Corp Terminal for flat circuit body and connector for flat circuit body
JP2015056209A (en) * 2013-09-10 2015-03-23 ヒロセ電機株式会社 Terminal for electric connector and electric connector
JP2019061742A (en) * 2017-09-22 2019-04-18 古河電気工業株式会社 Connector, assembly method of connector, wire harness with connector, connection terminal, and housing

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Publication number Priority date Publication date Assignee Title
JPS60221977A (en) * 1983-12-29 1985-11-06 ト−マス アンド ベツツ コ−ポレ−シヨン Connector for cable terminal
JP2001230010A (en) * 2000-02-21 2001-08-24 Yazaki Corp Terminal for flat circuit body and connector for flat circuit body
JP2015056209A (en) * 2013-09-10 2015-03-23 ヒロセ電機株式会社 Terminal for electric connector and electric connector
JP2019061742A (en) * 2017-09-22 2019-04-18 古河電気工業株式会社 Connector, assembly method of connector, wire harness with connector, connection terminal, and housing

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Publication number Priority date Publication date Assignee Title
JP2021077510A (en) * 2019-11-07 2021-05-20 古河電気工業株式会社 Connection structure, connection structure with housing, and terminal
JP7353921B2 (en) 2019-11-07 2023-10-02 古河電気工業株式会社 Connection structure, connection structure with housing, and terminal

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