JP2010027372A - Excessive displacement prevention structure of pushing piece in female terminal fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an excessive displacement prevention structure of a pushing piece in a female terminal fitting which prevents excessive displacement of the elastic pushing piece of a male terminal fitting and can secure stable electric connection characteristics between the male terminal fitting, and further, can attain thinness of a material plate. <P>SOLUTION: The female terminal fitting is provided with an elastic pushing piece 33 which energizes a connecting plate part 3 of the male terminal fitting to a terminal contact plate part 31 in a terminal body part of nearly square cylinder shape. The female terminal fitting has an excessive displacement prevention structure of pushing piece which has a displacement regulating part 61 to regulate displacement of the elastic pushing piece 33 by contacting the elastic pushing piece 33 when the elastic pushing piece 33 is displaced by a certain level or more by contacting with the connecting plate part 3, at the top end of the terminal body part 5, and prevents excessive displacement of the elastic pushing piece 33. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、雄端子金具の舌状の接続板部が挿入される略角筒状の端子本体部内に、前記接続板部を前記端子本体部内の端子接触板部に押圧接触させる弾性押圧片が装備される雌端子金具において前記弾性押圧片の過大変位を防止する押圧片過大変位防止構造に関する。   According to the present invention, an elastic pressing piece that presses and contacts the connection plate portion with the terminal contact plate portion in the terminal main body portion is inserted into the substantially rectangular tube-shaped terminal main body portion into which the tongue-like connection plate portion of the male terminal fitting is inserted. The present invention relates to a pressing piece excessive displacement prevention structure for preventing excessive displacement of the elastic pressing piece in a female terminal fitting to be provided.

図１０〜図１３は、雄端子金具の舌状の接続板部が挿入接続される雌端子金具の従来例を示したものである。   10 to 13 show a conventional example of a female terminal fitting to which a tongue-like connecting plate portion of a male terminal fitting is inserted and connected.

ここに示した雌端子金具１００は、下記特許文献１に開示されたもので、電線１０３が接続される電線接続部１０５と、雄端子金具の舌状の接続板部１０７が挿入接続される略角筒状の端子本体部１０９を備えている。   The female terminal fitting 100 shown here is disclosed in the following Patent Document 1, and is an abbreviation in which the electric wire connecting portion 105 to which the electric wire 103 is connected and the tongue-like connecting plate portion 107 of the male terminal fitting are inserted and connected. A rectangular tube terminal main body 109 is provided.

電線接続部１０５は、電線１０３を外被１０３ａの上から押える被覆加締め部１１１と、電線１０３の導体部１０３ｂを圧着接続する導体加締め部１１３とを備えている。   The electric wire connecting portion 105 includes a covering caulking portion 111 that presses the electric wire 103 from above the jacket 103a, and a conductor caulking portion 113 that crimps and connects the conductor portion 103b of the electric wire 103.

端子本体部１０９は、上壁部１２１と、折り曲げにより上壁部１２１の両側に立設された側壁部１２３，１２４と、前記上壁部１２１に対向するように、それぞれの側壁部１２３，１２４の下縁に折り曲げ形成された底壁部１２６，１２７とで、略角筒状の構造を造っている。   The terminal main body 109 includes an upper wall 121, side walls 123 and 124 erected on both sides of the upper wall 121 by bending, and the side walls 123 and 124 so as to face the upper wall 121. The bottom wall portions 126 and 127 bent at the lower edge form a substantially rectangular tube-like structure.

２枚の底壁部１２６，１２７は、重なり合って設けられている。そして、内側に位置する底壁部１２６には、図１１及び図１２に示すように、接続板部１０７の一面１０７ａが接触する端子接触板部１３１が打ち出し形成されている。外側に位置する底壁部１２７は、底壁部１２６の下方への変位を規制する役割をする。また、外側の底壁部１２７には、図１３に示すように、コネクタハウジング１４１の端子挿入孔１４２内のランス１４３に係合するハウジング係合突起１２７ａが切り起こしにより形成されている。   The two bottom wall portions 126 and 127 are provided so as to overlap each other. As shown in FIGS. 11 and 12, a terminal contact plate portion 131 that contacts one surface 107 a of the connection plate portion 107 is formed on the bottom wall portion 126 located inside. The bottom wall portion 127 located on the outer side serves to regulate the downward displacement of the bottom wall portion 126. Further, as shown in FIG. 13, a housing engaging protrusion 127 a that engages with a lance 143 in the terminal insertion hole 142 of the connector housing 141 is formed on the outer bottom wall portion 127 by cutting and raising.

また、端子接触板部１３１に対向する上壁部１２１側には、接続板部１０７の他方の面１０７ｂを押圧して、接続板部１０７を端子接触板部１３１に接触した状態に維持する弾性押圧片１３３が装備されている。   Further, on the side of the upper wall 121 facing the terminal contact plate 131, the other surface 107 b of the connection plate 107 is pressed to maintain the connection plate 107 in contact with the terminal contact plate 131. A pressing piece 133 is provided.

更に、上壁部１２１の先端には、弾性押圧片１３３の先端側を覆って端子本体部１０９に挿入される接続板部１０７の先端が弾性押圧片１３３の先端部に衝突することを防止する保護壁１３５が延設されている。   Further, at the tip of the upper wall portion 121, the tip of the connection plate portion 107 that covers the tip side of the elastic pressing piece 133 and is inserted into the terminal main body 109 is prevented from colliding with the tip of the elastic pressing piece 133. A protective wall 135 is extended.

特開２００７−１９４０４７号公報JP 2007-194047 A

ところで、上記の雌端子金具１００は、弾性押圧片１３３の先方に保護壁１３５を装備しているため、接続板部１０７の挿入時に、接続板部１０７が弾性押圧片１３３の先端に衝突する事で弾性押圧片１３３が変形したり破損したりする不都合の発生を防止することができる。   By the way, since the female terminal fitting 100 is equipped with the protective wall 135 at the tip of the elastic pressing piece 133, the connecting plate portion 107 collides with the tip of the elastic pressing piece 133 when the connecting plate portion 107 is inserted. Therefore, it is possible to prevent the disadvantage that the elastic pressing piece 133 is deformed or damaged.

しかし、弾性押圧片１３３が接続板部１０７を端子接触板部１３１に押圧した時に、その反力で、弾性押圧片１３３自体は上壁部１２１側（上方）に変位するが、その時の弾性押圧片１３３自体の上方への変位量を規制するような配慮はなされていない。   However, when the elastic pressing piece 133 presses the connection plate portion 107 against the terminal contact plate portion 131, the elastic pressing piece 133 itself is displaced to the upper wall 121 side (upward) by the reaction force. No consideration is given to restricting the upward displacement of the piece 133 itself.

そのため、端子接触板部１３１と弾性押圧片１３３との間に接続板部１０７が挿入された時に、例えば、接続板部１０７が図１３の矢印Ａ方向にこじられたりすると、弾性押圧片１３３が過大に外方側に変位してしまう虞があった。   Therefore, when the connecting plate 107 is inserted between the terminal contact plate 131 and the elastic pressing piece 133, for example, if the connecting plate 107 is twisted in the direction of arrow A in FIG. There was a risk of excessive displacement to the outside.

そして、弾性押圧片１３３が過大に外方側に変位してしまった場合には、弾性押圧片１３３に塑性変形や破損が生じることによって、接続板部１０７と端子接触板部１３１との間の接触圧が不足してしまって、電気的な接続特性が低下したり、電気的な接続が不安定になる虞があった。   When the elastic pressing piece 133 is excessively displaced outward, the elastic pressing piece 133 is plastically deformed or damaged, so that the connection between the connecting plate portion 107 and the terminal contact plate portion 131 is reduced. There is a risk that the contact pressure will be insufficient and the electrical connection characteristics will deteriorate or the electrical connection will become unstable.

また、このような板金製の雌端子金具では、材料となる金属板の板厚をできるだけ薄肉化することが低コスト化に有効であるが、上記の雌端子金具１００の構造の場合、薄肉化すると弾性押圧片１３３の弾性強度の低下により、更に弾性押圧片１３３の過大変位による電気的接続特性の低下が発生し易くなってしまうため、実際には材料板材の薄肉化による低コスト化を図ることが難しいという問題もあった。   Further, in such a female terminal fitting made of sheet metal, it is effective to reduce the thickness of the metal plate as a material as much as possible. However, in the case of the structure of the female terminal fitting 100 described above, the thickness is reduced. Then, due to the decrease in the elastic strength of the elastic pressing piece 133, the electrical connection characteristics are more likely to be deteriorated due to the excessive displacement of the elastic pressing piece 133. In actuality, the cost can be reduced by reducing the thickness of the material plate. There was also a problem that it was difficult to plan.

本発明の目的は上記課題を解消することに係り、雄端子金具の接続板部が端子本体部へ挿入される時にこじり力が作用しても、それにより弾性押圧片が過大に変位して相互の接触圧の不足を招くことがなく、雄端子金具との間に安定した電気的な接続特性を確保でき、しかも、材料板材の薄肉化により低コスト化を図ることができる雌端子金具における押圧片過大変位防止構造を提供することにある。   The object of the present invention is to solve the above-mentioned problems. Even if a twisting force is applied when the connecting plate portion of the male terminal fitting is inserted into the terminal main body portion, the elastic pressing pieces are thereby displaced excessively to each other. Pressing on female terminal fittings that can ensure stable electrical connection characteristics with the male terminal fittings without lowering the contact pressure of the male terminal fittings, and can reduce costs by reducing the thickness of the material plate An object of the present invention is to provide a structure for preventing a single excessive displacement.

本発明の前述した目的は、下記の構成により達成される。
（１） 雄端子金具の舌状の接続板部が挿入される略角筒状の端子本体部と、当該端子本体部内の一側の壁部に設けられ前記接続板部の一面が接触する端子接触板部と、前記端子本体部内の前記端子接触板部に対向する側に前記端子本体部の先端側に向かって延出して設けられ前記接続板部を前記端子接触板部に付勢する弾性押圧片と、を備え、且つ、前記端子本体部の先端部には、前記弾性押圧片の先端側を覆って端子本体部に挿入される接続板部の先端が弾性押圧片の先端部に衝突することを防止する保護壁が設けられた雌端子金具における、前記弾性押圧片の過大変位を防止する押圧片過大変位防止構造であって、
前記端子本体部の先端部には、前記弾性押圧片が前記接続板部との接触により外方に一定以上変位するとき前記弾性押圧片が接触して前記弾性押圧片の外方への過大変位を防止する変位規制部が設けられている、
ことを特徴とする雌端子金具における押圧片過大変位防止構造。 The above-described object of the present invention is achieved by the following configuration.
(1) A substantially rectangular tube-shaped terminal main body portion into which the tongue-shaped connection plate portion of the male terminal fitting is inserted, and a terminal provided on one side wall portion in the terminal main body portion and in contact with one surface of the connection plate portion A contact plate portion and an elasticity provided to extend toward the distal end side of the terminal main body portion on the side facing the terminal contact plate portion in the terminal main body portion and bias the connection plate portion to the terminal contact plate portion. And the tip of the terminal body part covers the tip side of the elastic pressing piece and the tip of the connection plate part inserted into the terminal body part collides with the tip of the elastic pressing piece. In the female terminal fitting provided with a protective wall to prevent the pressing piece excessive displacement prevention structure to prevent excessive displacement of the elastic pressing piece,
When the elastic pressing piece is displaced outward by a certain amount or more by contact with the connecting plate portion, the elastic pressing piece comes into contact with the distal end portion of the terminal body portion and the elastic pressing piece is excessively moved outward. Displacement restricting part to prevent the position is provided,
A structure for preventing excessive displacement of a pressing piece in a female terminal fitting.

（２） 前記変位規制部は、前記保護壁の一縁から延出した形態で設けられていることを特徴とする前記（１）に記載の雌端子金具における押圧片過大変位防止構造。 (2) The structure for preventing excessive displacement of the pressing piece in the female terminal fitting according to (1), wherein the displacement restricting portion is provided in a form extending from one edge of the protective wall.

（３） 前記弾性押圧片は、前記端子本体部を構成する壁部から折り曲げられて形成されていることを特徴とする前記（１）又は（２）に記載の雌端子金具における押圧片過大変位防止構造。 (3) The elastic pressing piece is formed by being bent from a wall portion constituting the terminal main body, and the pressing piece is excessive in the female terminal fitting according to (1) or (2). Position prevention structure.

（４） 前記弾性押圧片の側縁には、該弾性押圧片の側方に位置する前記端子本体部の本体側壁部に向かって突出した突起部が延設されると共に、
前記本体側壁部の前記弾性押圧片の側方に位置する部分には、前記突起部が挿入及び配置された突起挿通孔が設けられており、
前記突起挿通孔を画成する前記本体側壁部の内周面により前記突起部の内方への可動範囲を規制することで前記弾性押圧片の内方への過大変位を防止することを特徴とする前記（１）〜（３）の何れか一項に記載の雌端子金具における押圧片過大変位防止構造。 (4) The side edge of the elastic pressing piece is provided with a protruding portion protruding toward the main body side wall of the terminal main body located on the side of the elastic pressing piece,
The portion located on the side of the elastic pressing piece of the main body side wall is provided with a protrusion insertion hole in which the protrusion is inserted and arranged,
An excessive displacement of the elastic pressing piece inward is prevented by restricting a movable range of the protrusion inward by an inner peripheral surface of the main body side wall defining the protrusion insertion hole. The pressing piece excessive displacement prevention structure in the female terminal fitting according to any one of (1) to (3).

上記（１）の構成によれば、例えば雄端子金具の接続板部が端子本体部へ挿入される時にこじり力が作用して、弾性押圧片が前記接続板部からのこじり力によって外方に一定以上変位しようとしたとき、前記変位規制部との接触により、弾性押圧片が一定以上外方に変位することが規制され、弾性押圧片の過大変位による塑性変形や破損が防止される。
即ち、弾性押圧片の外方への変位は常に一定範囲以下に規制されるため、弾性押圧片が外方に過大に変位して接続板部と端子接触板部との間に接触圧の不足を招くことがなく、雄端子金具との間に安定した電気的な接続特性を確保できる。 According to the configuration of (1) above, for example, when the connecting plate portion of the male terminal fitting is inserted into the terminal body portion, a twisting force acts, and the elastic pressing piece is moved outward by the twisting force from the connecting plate portion. When an attempt is made to displace more than a certain amount, the elastic pressing piece is restricted from being displaced outward by a certain amount or more by contact with the displacement restricting portion, and plastic deformation or breakage due to excessive displacement of the elastic pressing piece is prevented.
That is, since the outward displacement of the elastic pressing piece is always regulated to a certain range or less, the elastic pressing piece is excessively displaced outward and the contact pressure is insufficient between the connection plate portion and the terminal contact plate portion. Therefore, stable electrical connection characteristics can be ensured between the male terminal fitting and the male terminal fitting.

しかも、材料板材の薄肉化を図っても、前記変位規制部により弾性押圧片の外方への過大変位を確実に防止できるため、材料板材の薄肉化により低コスト化を図ることもできる。   Moreover, even if the material plate is made thinner, excessive displacement of the elastic pressing piece to the outside can be reliably prevented by the displacement restricting portion, so that the cost can be reduced by making the material plate thinner.

更に、上記（２）の構成によれば、弾性押圧片の変位を規制する変位規制部は、保護壁から延出する形態で装備されていて、保護壁と一緒にプレス加工により形成できるため、変位規制部の追加が部品点数の増加を招くことがなく、雌端子金具の生産性を向上させることができる。   Furthermore, according to the configuration of (2) above, the displacement restricting portion for restricting the displacement of the elastic pressing piece is equipped with a form extending from the protective wall, and can be formed by pressing together with the protective wall. The addition of the displacement restricting portion does not cause an increase in the number of parts, and the productivity of the female terminal fitting can be improved.

更に、上記（３）の構成によれば、例えば、保護壁や変位規制部は端子本体部の上部壁部に設け、弾性押圧片は前記上部壁部の一側方に位置する一方の側壁部の上縁から折り曲げて形成することにより、効率的な板取りが可能になり、雌端子金具の歩留まりを向上させることができる。   Furthermore, according to the configuration of (3), for example, the protective wall and the displacement restricting portion are provided on the upper wall portion of the terminal body portion, and the elastic pressing piece is one side wall portion located on one side of the upper wall portion. By bending from the upper edge, efficient plate cutting can be performed, and the yield of female terminal fittings can be improved.

更に、上記（４）の構成によれば、変位規制部と弾性押圧片との当接により弾性押圧片の外方への過大変位が規制される一方、突起挿通孔と突起部との係合によって弾性押圧片の内方への過大変位が規制されて、結局、弾性押圧片は内外双方への過大変位が規制されるため、弾性押圧片の過大変位による変形や破損をより確実に防止することが可能になる。   Furthermore, according to the configuration of (4) above, excessive displacement of the elastic pressing piece to the outside is restricted by the contact between the displacement restricting portion and the elastic pressing piece, while the relationship between the protrusion insertion hole and the protruding portion. As a result, excessive displacement inward of the elastic pressing piece is restricted, and eventually, the elastic pressing piece is restricted from excessive displacement inward and outward. It becomes possible to prevent reliably.

本発明による雌端子金具における押圧片過大変位防止構造によれば、例えば雄端子金具の接続板部が端子本体部へ挿入される時にこじり力が作用して、弾性押圧片が前記接続板部からのこじり力によって外方に一定以上変位しようとしたとき、前記変位規制部との接触により、弾性押圧片が一定以上外方に変位することが規制され、弾性押圧片の外方への過大変位による塑性変形や破損が防止される。   According to the structure for preventing the excessive displacement of the pressing piece in the female terminal fitting according to the present invention, for example, when the connecting plate portion of the male terminal fitting is inserted into the terminal main body portion, a twisting force acts, and the elastic pressing piece becomes the connecting plate portion. When the outer side is to be displaced more than a certain amount due to the twisting force, the elastic pressure piece is restricted from being displaced more than a certain amount by contact with the displacement restricting portion, and the elastic pressure piece is excessively moved outward. Plastic deformation and breakage due to large displacement are prevented.

従って、弾性押圧片が外方に過大に変位して接続板部と端子接触板部との間に接触圧の不足を招くことがなく、雄端子金具との間に安定した電気的な接続特性を確保できる。   Therefore, the elastic pressing piece is not displaced excessively outward, causing insufficient contact pressure between the connection plate portion and the terminal contact plate portion, and stable electrical connection characteristics between the male terminal fittings. Can be secured.

しかも、材料板材の薄肉化を図っても、前記変位規制部により弾性押圧片の過大変位を確実に防止できるため、材料板材の薄肉化により低コスト化を図ることもできる。   Moreover, even if the material plate material is thinned, the displacement restricting portion can surely prevent the elastic pressing piece from being excessively displaced. Therefore, the material plate material can be thinned and the cost can be reduced.

以下、本発明に係る雌端子金具における押圧片過大変位防止構造の好適な実施形態について、図面を参照して詳細に説明する。   Hereinafter, a preferred embodiment of a structure for preventing excessive displacement of a pressing piece in a female terminal fitting according to the present invention will be described in detail with reference to the drawings.

図１〜図７は本発明に係る押圧片過大変位防止構造を採用した雌端子金具の一実施形態を示したもので、図１は一実施形態の雌端子金具の斜視図、図２は図１に示した雌端子金具にプレス成形する金属板の展開図、図３は図１に示した雌端子金具における押圧片過大変位防止構造を示す断面斜視図、図４（ａ）は図１に示した雌端子金具における端子本体部の左側面上方側からの拡大斜視図、図４（ｂ）は同端子本体部の右側面上方側からの拡大斜視図、図５は図１に示した雌端子金具における端子本体部の右側面下方側からの拡大斜視図、図６は図１に示した雌端子金具の縦断面図、図７は図１に示した雌端子金具に雄端子金具の接続板部が接続された状態の縦断面図である。   1 to 7 show an embodiment of a female terminal fitting that employs the pressure piece excessive displacement prevention structure according to the present invention. FIG. 1 is a perspective view of the female terminal fitting of the embodiment, and FIG. FIG. 3 is a developed view of a metal plate to be press-formed on the female terminal fitting shown in FIG. 1, FIG. 3 is a cross-sectional perspective view showing a structure for preventing excessive displacement of the pressing piece in the female terminal fitting shown in FIG. 1, and FIG. 4 is an enlarged perspective view from the upper side of the left side surface of the terminal main body, FIG. 4B is an enlarged perspective view of the terminal main body from the upper side of the right side, and FIG. 5 is shown in FIG. FIG. 6 is a longitudinal sectional view of the female terminal fitting shown in FIG. 1, and FIG. 7 is a sectional view of the female terminal fitting shown in FIG. It is a longitudinal cross-sectional view in the state where the connection plate part of was connected.

この一実施形態の雌端子金具１は、金属板のプレス成形によって所定形状に形成されるもので、電線が接続される電線接続部２と、雄端子金具の舌状の接続板部３（図７参照）が挿入される略角筒状の端子本体部５とを備えている。   The female terminal fitting 1 of this embodiment is formed into a predetermined shape by press-molding a metal plate, and an electric wire connecting portion 2 to which an electric wire is connected and a tongue-like connecting plate portion 3 of a male terminal fitting (FIG. 7) into which a substantially rectangular tube-shaped terminal body 5 is inserted.

電線接続部２は、電線をその外被の上から押える被覆加締め部２ａと、電線の導体部を圧着接続する導体加締め部２ｂとを備えている。   The electric wire connection part 2 is provided with the covering caulking part 2a which presses an electric wire from on the jacket, and the conductor caulking part 2b which crimps and connects the conductor part of the electric wire.

端子本体部５は、底壁部１１と、折り曲げにより底壁部１１の両側に立設された側壁部１３，１４と、前記底壁部１１に対向するように、側壁部１４の上縁に折り曲げ形成された上部壁部１７とで、略角筒状の構造を造っている。   The terminal body 5 includes a bottom wall 11, side walls 13 and 14 erected on both sides of the bottom wall 11 by bending, and an upper edge of the side wall 14 so as to face the bottom wall 11. The upper wall part 17 formed by bending forms a substantially rectangular tube-like structure.

なお、図２の展開図に記入している二点鎖線の線分Ａ１〜Ａ４は、底壁部１１の両側に、側壁部１３，１４及び上部壁部１７をプレス成形する時の折り曲げ箇所を例示したものである。   In addition, the two-dot chain line segments A1 to A4 written in the development view of FIG. 2 are bent portions when the side wall portions 13 and 14 and the upper wall portion 17 are press-molded on both sides of the bottom wall portion 11. This is just an example.

略角筒状の端子本体部５の一側の壁部である底壁部１１には、図５〜図７に示すように、接続板部３の一面３ａが接触する端子接触板部３１が打ち出し形成される。   As shown in FIGS. 5 to 7, a terminal contact plate portion 31 that contacts one surface 3 a of the connection plate portion 3 is formed on the bottom wall portion 11 that is one side wall portion of the terminal body portion 5 having a substantially rectangular tube shape. Formed by punching.

この端子接触板部３１は、その前後のそれぞれの端縁に底壁部１１に連絡するブリッジ部３１ａがあり、打ち出し加工時にはこのブリッジ部３１ａが絞られて、端子接触板部３１が上方に***した形態に成形される。   This terminal contact plate portion 31 has bridge portions 31a communicating with the bottom wall portion 11 at the respective front and rear edges thereof, and the bridge contact portion 31a is squeezed at the time of punching and the terminal contact plate portion 31 is raised upward. It is molded into the shape.

なお、図２に示した展開図では、端子接触板部３１の左右の端縁にも、底壁部１１に連絡するブリッジ部３１ｂが設けられている。しかし、この左右端縁のブリッジ部３１ｂは、端子接触板部３１を打ち出し加工する前に切除される。   In the developed view shown in FIG. 2, bridge portions 31 b communicating with the bottom wall portion 11 are also provided on the left and right edges of the terminal contact plate portion 31. However, the bridge portions 31b at the left and right edges are cut off before the terminal contact plate portion 31 is punched out.

また、端子本体部５の端子接触板部３１に対向する上部壁部１７の内側には、端子本体部５内に挿入された接続板部３の他方の面３ｂを端子接触板部３１側に付勢する弾性押圧片３３が設けられている。   In addition, on the inner side of the upper wall portion 17 facing the terminal contact plate portion 31 of the terminal main body portion 5, the other surface 3 b of the connection plate portion 3 inserted into the terminal main body portion 5 faces the terminal contact plate portion 31 side. An elastic pressing piece 33 for biasing is provided.

この弾性押圧片３３は、図２に示すように側壁部１３の上縁から端子本体部５の先端側に向かって延出していて、プレス成形により端子接触板部３１に対向する位置に折り曲げられて、図６に示すように、先端側及び中間部に曲げ部３３ａ，３３ｂを有した板ばね形状に成形される。   As shown in FIG. 2, the elastic pressing piece 33 extends from the upper edge of the side wall portion 13 toward the distal end side of the terminal main body portion 5, and is bent to a position facing the terminal contact plate portion 31 by press molding. Then, as shown in FIG. 6, it is molded into a leaf spring shape having bent portions 33a and 33b at the tip side and the intermediate portion.

弾性押圧片３３の先端側の曲げ部３３ａは、上方に凸の曲げ部である。また、弾性押圧片３３の中間部の曲げ部３３ｂは下に凸の曲げ部で、図７に示すように、この曲げ部３３ｂの周辺が接続板部３の他方の面３ｂへの接触部となる。   The bent portion 33a on the distal end side of the elastic pressing piece 33 is a bent portion protruding upward. Further, the bent portion 33b of the intermediate portion of the elastic pressing piece 33 is a bent portion that protrudes downward, and as shown in FIG. 7, the periphery of the bent portion 33b is a contact portion with the other surface 3b of the connecting plate portion 3. Become.

本実施形態の場合、端子本体部５の先端部には、前記弾性押圧片３３の先端側を覆って端子本体部５に挿入される接続板部３の先端が弾性押圧片３３の先端部に衝突することを防止し、また、弾性押圧片３３と上部壁部１７との間の隙間に接続板部３が誤挿入されることを防止する保護壁３５が設けられている。   In the case of the present embodiment, the distal end of the terminal body 5 is covered with the distal end of the connection plate 3 that covers the distal end of the elastic pressing piece 33 and is inserted into the terminal body 5. A protective wall 35 that prevents collision and prevents the connection plate portion 3 from being erroneously inserted in the gap between the elastic pressing piece 33 and the upper wall portion 17 is provided.

この保護壁３５は、図２に示すように、上部壁部１７の先端から先方に延出する突片３５Ａを、その先端が底壁部１１側を向くように折り曲げることにより、形成されている。   As shown in FIG. 2, the protective wall 35 is formed by bending a protruding piece 35A extending forward from the tip of the upper wall portion 17 so that the tip thereof faces the bottom wall portion 11 side. .

更に、本実施形態の場合、端子本体部５の先端部には、変位規制部６１を備えている。
この変位規制部６１は、上部壁部１７の一部で、保護壁３５の上縁（一縁）から延出した形態に装備されていて、弾性押圧片３３が接続板部３との接触により一定以上外方（上方）に変位するときに弾性押圧片３３の先端側の曲げ部３３ａが接触することにより、該弾性押圧片３３の外方への変位を一定値以下に規制する。 Further, in the case of this embodiment, a displacement restricting portion 61 is provided at the distal end portion of the terminal main body portion 5.
The displacement restricting portion 61 is a part of the upper wall portion 17 and is provided in a form extending from the upper edge (one edge) of the protective wall 35, and the elastic pressing piece 33 is brought into contact with the connection plate portion 3. When the bending portion 33a on the distal end side of the elastic pressing piece 33 comes into contact when the outer side is displaced more than a certain amount outward (upward), the outward displacement of the elastic pressing piece 33 is restricted to a certain value or less.

弾性押圧片３３の曲げ部３３ａと曲げ部３３ｂとの間の斜面３３ｃは、図６及び図７に示すように、挿入される接続板部３の先端部が当接した時に、接続板部３の先端部を曲げ部３３ｂ側に誘導する案内面として機能する。   As shown in FIGS. 6 and 7, the inclined surface 33 c between the bent portion 33 a and the bent portion 33 b of the elastic pressing piece 33 is connected to the connecting plate portion 3 when the distal end portion of the connecting plate portion 3 to be inserted comes into contact. It functions as a guide surface that guides the tip of the head toward the bent portion 33b.

本実施形態の場合、図２及び図３に示すように、端子接触板部３１の両側に、該端子接触板部３１の両側に位置する本体側壁部１３，１４に向かって突出した突起部３７を延設している。
突起部３７は、端子接触板部３１の長さ方向に離間した２位置に、それぞれ装備されている。 In the case of this embodiment, as shown in FIGS. 2 and 3, protrusions 37 projecting toward the main body side wall portions 13 and 14 located on both sides of the terminal contact plate portion 31 on both sides of the terminal contact plate portion 31. Is extended.
The protrusions 37 are respectively provided at two positions spaced apart in the length direction of the terminal contact plate portion 31.

また、端子接触板部３１の両側に位置する本体側壁部１３，１４には、各突起部３７を挿通させて、各突起部３７の上下方向の可動範囲を規制する突起挿通孔３９を設けている。   Further, the body side wall portions 13 and 14 located on both sides of the terminal contact plate portion 31 are provided with projection insertion holes 39 through which the projections 37 are inserted and the vertical movable range of the projections 37 is restricted. Yes.

突起挿通孔３９は、開口の下縁３９ａが突起部３７の下面の高さよりも適宜距離だけ下方に設定されていて、この距離が突起部３７の下方への可動範囲となる。   In the protrusion insertion hole 39, the lower edge 39 a of the opening is set appropriately below the height of the lower surface of the protrusion 37, and this distance becomes a movable range below the protrusion 37.

本実施形態の雌端子金具１において、突起挿通孔３９によって突起部３７の可動範囲を規制する構造は、接続板部３から作用する付勢力で端子接触板部３１が過大に変位することを防止する接触部過大変位防止構造となっている。   In the female terminal fitting 1 of the present embodiment, the structure in which the movable range of the protrusion 37 is regulated by the protrusion insertion hole 39 prevents the terminal contact plate 31 from being excessively displaced by the urging force acting from the connection plate 3. It has a contact part excessive displacement prevention structure.

この場合に、端子接触板部３１の過大変位とは、端子接触板部３１が前記突起挿通孔３９の下縁３９ａまでの離間距離以上に底壁部１１側に変位することを意味している。   In this case, the excessive displacement of the terminal contact plate portion 31 means that the terminal contact plate portion 31 is displaced toward the bottom wall portion 11 side more than the separation distance to the lower edge 39a of the protrusion insertion hole 39. Yes.

更に、本実施形態の雌端子金具１における接触部過大変位防止構造では、図６に示すように、端子本体部５の先端側に位置する突起部３７には、突出方向（端子本体部５の幅方向）に沿って延びる折り曲げ部４１を打ち出し形成している。   Furthermore, in the contact part excessive displacement prevention structure in the female terminal fitting 1 of the present embodiment, as shown in FIG. 6, the protruding part 37 positioned on the distal end side of the terminal body part 5 has a protruding direction (terminal body part 5 The bent portion 41 extending along the width direction is punched out.

この折り曲げ部４１は、突起部３７の剛性を高めて、突起部３７による位置規制性能を向上させる。   The bent portion 41 increases the rigidity of the protruding portion 37 and improves the position regulation performance by the protruding portion 37.

更に、本実施形態の雌端子金具１では、図２及び図３に示すように、弾性押圧片３３の一方の側縁に、該弾性押圧片３３の側方に位置する本体側壁部１４に向かって突出した突起部６５を延設している。   Further, in the female terminal fitting 1 of the present embodiment, as shown in FIGS. 2 and 3, it is directed to one side edge of the elastic pressing piece 33 toward the main body side wall portion 14 positioned on the side of the elastic pressing piece 33. A projecting portion 65 protruding in this manner is extended.

また、弾性押圧片３３の一方の側縁に対向する本体側壁部１４には、突起部６５を挿通させて、突起部６５の内方（端子接触板部３１側）への可動範囲を規制する突起挿通孔６７を設けている。   Further, a protrusion 65 is inserted into the main body side wall portion 14 facing one side edge of the elastic pressing piece 33, and the movable range to the inside (terminal contact plate 31 side) of the protrusion 65 is restricted. A protrusion insertion hole 67 is provided.

上記の突起挿通孔６７によって突起部６５の内方への可動範囲を規制する構造は、保管時や搬送時等に、図６に示す上部壁部１７の開口１７ｂ等から弾性押圧片３３に外力が作用して、外力により弾性押圧片３３が内方（端子接触板部３１側）に過大変位することを防止する押圧片過大変位防止構造として機能する。   The structure in which the inwardly movable range of the protrusion 65 is regulated by the protrusion insertion hole 67 described above is such that an external force is applied to the elastic pressing piece 33 from the opening 17b of the upper wall 17 shown in FIG. Acts as a pressing piece excessive displacement prevention structure that prevents the elastic pressing piece 33 from being excessively displaced inward (terminal contact plate portion 31 side) by an external force.

以上に説明した雌端子金具１では、端子本体部５の先端部に弾性押圧片３３の先方を覆うように保護壁３５が装備されているため、雄端子金具の接続板部３が端子本体部５へ挿入される時に、接続板部３の挿入位置が上方側にずれたとしても、図８（ａ）に示すように接続板部３は保護壁３５に当たって端子本体部５内への侵入が阻止され、図８（ｂ）に示すように接続板部３の先端が直接弾性押圧片３３の先端に衝突する事故を防止することができる。   In the female terminal fitting 1 described above, since the protective wall 35 is provided at the tip of the terminal main body 5 so as to cover the tip of the elastic pressing piece 33, the connecting plate portion 3 of the male terminal fitting is the terminal main body portion. Even when the insertion position of the connecting plate portion 3 is shifted upward when inserted into the connecting plate portion 5, the connecting plate portion 3 hits the protective wall 35 as shown in FIG. As a result, it is possible to prevent an accident in which the tip of the connection plate portion 3 directly collides with the tip of the elastic pressing piece 33 as shown in FIG.

また、以上に説明した雌端子金具１では、例えば雄端子金具の接続板部３が端子本体部５へ挿入される時にこじり力が作用して、弾性押圧片３３が接続板部３からのこじり力によって外方に一定以上変位しようとしたとき、変位規制部６１との接触により、弾性押圧片３３が外方に一定以上変位することが規制され、弾性押圧片３３の過大変位による塑性変形や破損が防止される。   Further, in the female terminal fitting 1 described above, for example, when the connecting plate portion 3 of the male terminal fitting is inserted into the terminal main body portion 5, a twisting force acts, and the elastic pressing piece 33 is twisted from the connecting plate portion 3. When the force is to be displaced outward by a certain amount or more by force, the elastic pressing piece 33 is restricted from being displaced outward by a certain amount or more by contact with the displacement restricting portion 61, and plastic deformation due to excessive displacement of the elastic pressing piece 33 is performed. And damage is prevented.

即ち、弾性押圧片３３の変位は常に一定範囲以下に規制されるため、弾性押圧片３３が過大に変位して接続板部３と端子接触板部３１との間に接触圧の不足を招くことがなく、雄端子金具との間に安定した電気的な接続特性を確保できる。   That is, since the displacement of the elastic pressing piece 33 is always restricted to a certain range or less, the elastic pressing piece 33 is displaced excessively, resulting in insufficient contact pressure between the connection plate portion 3 and the terminal contact plate portion 31. Therefore, stable electrical connection characteristics can be secured with the male terminal fitting.

しかも、材料板材の薄肉化を図っても、変位規制部６１により弾性押圧片３３の過大変位を確実に防止できるため、材料板材の薄肉化により低コスト化を図ることもできる。   Moreover, even if the material plate is made thinner, excessive displacement of the elastic pressing piece 33 can be reliably prevented by the displacement restricting portion 61, so that the cost can be reduced by making the material plate thinner.

更に、上記雌端子金具１の構成によれば、弾性押圧片３３の変位を規制する変位規制部６１は、保護壁３５から延出する形態で装備されていて、保護壁３５と一緒にプレス加工により形成できるため、変位規制部６１の追加が部品点数の増加を招くことがなく、雌端子金具１の生産性を向上させることができる。   Furthermore, according to the configuration of the female terminal fitting 1, the displacement restricting portion 61 that restricts the displacement of the elastic pressing piece 33 is provided in a form extending from the protective wall 35, and is pressed together with the protective wall 35. Therefore, the addition of the displacement restricting portion 61 does not increase the number of parts, and the productivity of the female terminal fitting 1 can be improved.

更に、上記雌端子金具１の構成によれば、例えば、図２にも示したように、保護壁３５や変位規制部６１は端子本体部５の上部壁部１７に設け、弾性押圧片３３は前記上部壁部１７の一側方に位置する一方の側壁部１３の上縁から折り曲げて形成することにより、効率的な板取りが可能になり、雌端子金具１の歩留まりを向上させることができる。   Furthermore, according to the configuration of the female terminal fitting 1, for example, as shown in FIG. 2, the protective wall 35 and the displacement restricting portion 61 are provided on the upper wall portion 17 of the terminal main body portion 5, and the elastic pressing piece 33 is Bending from the upper edge of one side wall 13 located on one side of the upper wall 17 enables efficient planing and improves the yield of the female terminal fitting 1. .

更に、上記雌端子金具１の構成によれば、変位規制部６１と弾性押圧片３３との当接により弾性押圧片３３の外方への過大変位が規制される一方、突起挿通孔６７と突起部６５との係合によって弾性押圧片３３の内方への過大変位が規制されて、結局、弾性押圧片３３は内外双方への過大変位が規制されるため、弾性押圧片３３の過大変位による変形や破損をより確実に防止することができる。   Further, according to the configuration of the female terminal fitting 1, excessive displacement of the elastic pressing piece 33 outward is restricted by the contact between the displacement restricting portion 61 and the elastic pressing piece 33, while the protrusion insertion hole 67 The excessive displacement inward of the elastic pressing piece 33 is restricted by the engagement with the protrusion 65, and eventually the elastic pressing piece 33 is restricted from excessive displacement inward and outward. Deformation and breakage due to excessive displacement can be prevented more reliably.

本発明に係る押圧片過大変位防止構造を採用した雌端子金具の一実施形態の斜視図である。It is a perspective view of one embodiment of a female terminal metal fitting which adopted the pressure piece excessive displacement prevention structure concerning the present invention. 図１に示した雌端子金具にプレス成形する金属板の展開図である。It is an expanded view of the metal plate press-molded to the female terminal metal fitting shown in FIG. 図１に示した雌端子金具における押圧片過大変位防止構造を示す断面斜視図である。It is a cross-sectional perspective view which shows the press piece excessive displacement prevention structure in the female terminal metal fitting shown in FIG. （ａ）は図１に示した雌端子金具における端子本体部の左側面上方側からの拡大斜視図、（ｂ）は同端子本体部の右側面上方側からの拡大斜視図である。(A) is the expansion perspective view from the left side upper side of the terminal main-body part in the female terminal metal fitting shown in FIG. 1, (b) is the expansion perspective view from the right side upper side of the terminal main-body part. 図１に示した雌端子金具における端子本体部の右側面下方側からの拡大斜視図である。It is an expansion perspective view from the right side lower side of the terminal main-body part in the female terminal metal fitting shown in FIG. 図１に示した雌端子金具の縦断面図である。It is a longitudinal cross-sectional view of the female terminal metal fitting shown in FIG. 図１に示した雌端子金具に雄端子金具の接続板部が接続された状態の縦断面図である。It is a longitudinal cross-sectional view of the state in which the connection plate part of the male terminal fitting is connected to the female terminal fitting shown in FIG. 図１に示した雌端子金具における保護壁の作用の説明図である。It is explanatory drawing of an effect | action of the protective wall in the female terminal metal fitting shown in FIG. 図１に示した雌端子金具における接触部過大変位防止構造における作用の説明図である。It is explanatory drawing of an effect | action in the contact part excessive displacement prevention structure in the female terminal metal fitting shown in FIG. 従来の雌端子金具の側面図である。It is a side view of the conventional female terminal metal fitting. 図１０に示した雌端子金具の正面図である。It is a front view of the female terminal metal fitting shown in FIG. 図１０に示した雌端子金具の先端部の拡大斜視図である。It is an expansion perspective view of the front-end | tip part of the female terminal metal fitting shown in FIG. 図１０に示した雌端子金具がコネクタハウジングに挿着された状態の縦断面図である。It is a longitudinal cross-sectional view of the state in which the female terminal fitting shown in FIG. 10 is inserted into the connector housing.

符号の説明Explanation of symbols

１ 雌端子金具
２ 電線接続部
３ 接続板部
３ａ 一面
５ 端子本体部
１１ 底壁部
１３，１４ 側壁部
１７ 上部壁部
２１ 切欠
２３ 連結片
３１ 端子接触板部
３１ａ ブリッジ部
３１ｂ ブリッジ部
３３ 弾性押圧片
３３ａ，３３ｂ 曲げ部
３５ 突片（保護壁）
３７ 突起部
３９ 突起挿通孔
４１ 折り曲げ部
４３ 付け根部分
５１ 領域
６１ 変位規制部
６５ 突起部
６７ 突起挿通孔 DESCRIPTION OF SYMBOLS 1 Female terminal metal fitting 2 Electric wire connection part 3 Connection board part 3a One surface 5 Terminal main-body part 11 Bottom wall part 13, 14 Side wall part 17 Upper wall part 21 Notch 23 Connection piece 31 Terminal contact plate part 31a Bridge part 31b Bridge part 33 Elastic press Piece 33a, 33b Bending part 35 Projection piece (protective wall)
37 Projection part 39 Projection insertion hole 41 Bending part 43 Base part 51 Area 61 Displacement restricting part 65 Projection part 67 Projection insertion hole

Claims (4)

雄端子金具の舌状の接続板部が挿入される略角筒状の端子本体部と、当該端子本体部内の一側の壁部に設けられ前記接続板部の一面が接触する端子接触板部と、前記端子本体部内の前記端子接触板部に対向する側に前記端子本体部の先端側に向かって延出して設けられ前記接続板部を前記端子接触板部に付勢する弾性押圧片と、を備え、且つ、前記端子本体部の先端部には、前記弾性押圧片の先端側を覆って端子本体部に挿入される接続板部の先端が弾性押圧片の先端部に衝突することを防止する保護壁が設けられた雌端子金具における、前記弾性押圧片の過大変位を防止する押圧片過大変位防止構造であって、
前記端子本体部の先端部には、前記弾性押圧片が前記接続板部との接触により外方に一定以上変位するとき前記弾性押圧片が接触して前記弾性押圧片の外方への過大変位を防止する変位規制部が設けられている、
ことを特徴とする雌端子金具における押圧片過大変位防止構造。 A substantially rectangular tube-shaped terminal main body portion into which the tongue-shaped connection plate portion of the male terminal fitting is inserted, and a terminal contact plate portion that is provided on one side wall portion in the terminal main body portion and contacts one surface of the connection plate portion. And an elastic pressing piece that extends toward the distal end side of the terminal main body on the side facing the terminal contact plate in the terminal main body and biases the connection plate toward the terminal contact plate. And the tip of the terminal main body part covers the tip side of the elastic pressing piece, and the tip of the connection plate part inserted into the terminal main body part collides with the tip of the elastic pressing piece. In the female terminal fitting provided with a protective wall to prevent, a pressing piece excessive displacement prevention structure for preventing excessive displacement of the elastic pressing piece,
When the elastic pressing piece is displaced outward by a certain amount or more by contact with the connecting plate portion, the elastic pressing piece comes into contact with the distal end portion of the terminal body portion and the elastic pressing piece is excessively moved outward. Displacement restricting part to prevent the position is provided,
A structure for preventing excessive displacement of a pressing piece in a female terminal fitting. 前記変位規制部は、前記保護壁の一縁から延出した形態で設けられていることを特徴とする請求項１に記載の雌端子金具における押圧片過大変位防止構造。   The structure according to claim 1, wherein the displacement restricting portion is provided in a form extending from one edge of the protective wall. 前記弾性押圧片は、前記端子本体部を構成する壁部から折り曲げられて形成されていることを特徴とする請求項１又は２に記載の雌端子金具における押圧片過大変位防止構造。   3. The structure for preventing excessive displacement of a pressing piece in a female terminal fitting according to claim 1, wherein the elastic pressing piece is formed by being bent from a wall part constituting the terminal main body part. 前記弾性押圧片の側縁には、該弾性押圧片の側方に位置する前記端子本体部の本体側壁部に向かって突出した突起部が延設されると共に、
前記本体側壁部の前記弾性押圧片の側方に位置する部分には、前記突起部が挿入及び配置された突起挿通孔が設けられており、
前記突起挿通孔を画成する前記本体側壁部の内周面により前記突起部の内方への可動範囲を規制することで前記弾性押圧片の内方への過大変位を防止することを特徴とする請求項１〜３の何れか一項に記載の雌端子金具における押圧片過大変位防止構造。 On the side edge of the elastic pressing piece, a protrusion protruding toward the main body side wall of the terminal main body located on the side of the elastic pressing piece is extended,
The portion located on the side of the elastic pressing piece of the main body side wall is provided with a protrusion insertion hole in which the protrusion is inserted and arranged,
An excessive displacement of the elastic pressing piece inward is prevented by restricting a movable range of the protrusion inward by an inner peripheral surface of the main body side wall defining the protrusion insertion hole. The press piece excessive displacement prevention structure in the female terminal metal fitting as described in any one of Claims 1-3.

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