JP2013114937A - Female terminal structure - Google Patents

Female terminal structure Download PDF

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JP2013114937A
JP2013114937A JP2011260811A JP2011260811A JP2013114937A JP 2013114937 A JP2013114937 A JP 2013114937A JP 2011260811 A JP2011260811 A JP 2011260811A JP 2011260811 A JP2011260811 A JP 2011260811A JP 2013114937 A JP2013114937 A JP 2013114937A
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contact
contact portion
bent
male terminal
contact piece
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Keiji Wada
圭史 和田
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Yazaki Corp
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Yazaki Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a female terminal structure that can attain both low terminal insertion force and high contact reliability.SOLUTION: A female terminal structure 11 includes: an elastic contact piece 19 which is provided inside an electric connection part 13, and extends from a rear end-side base part toward a tip opening part 15; a bent part 29 which is bent and formed in a V shape in an intermediate part of the elastic contact piece 19, and has its top part 31 to be in contact with an inner surface of a top wall 27; a rigidity increase mechanism 55 provided in the bent part 29 so as to restrict deformation of the bent part 29; a front contact part 51 which is formed on the tip opening part 15 side of the bent part 29, and is to be in contact with a square pin-shaped contact part 21; a rear contact part 53 which is formed on a rear end side of the bent part 29, and is to be in contact with the square pin-shaped contact part 21; a rear gap which is formed between the rear contact part 53 and a projection tip surface 41 of a bottom wall 37, and is smaller than a thickness T2 of the square pin-shaped contact part 21; and a front gap which is formed between the front contact part 51 and the projection tip surface 41 of the bottom wall 37, is substantially equal to or less than the thickness T2 of the square pin-shaped contact part 21, and is larger than the rear gap.

Description

本発明は、雌端子構造に関する。   The present invention relates to a female terminal structure.

従来から、筒状の電気接触部内に弾性接触片を有する雌端子が知られている（例えば、特許文献１等）。
図５に示すように、雌型の端子５０３は、筒状の電気接触部５０１の対向側壁の一方（図中、上方）の内壁面側に、弾性接触片５０５が成形される。また、電気接触部５０１の対向側壁の他方（図中、下方）の内壁面側には、弾性接触片５０５と対向して突起５０７が設けられている。そして、弾性接触片５０５の接触部５０９と対向する突起５０７との間には、雄端子５１１の厚みＴよりも小さい隙間Ｂが設けられている。 Conventionally, a female terminal having an elastic contact piece in a cylindrical electric contact portion is known (for example, Patent Document 1).
As shown in FIG. 5, in the female terminal 503, an elastic contact piece 505 is formed on one inner wall surface side (upward in the drawing) of the opposing side wall of the cylindrical electrical contact portion 501. Further, a projection 507 is provided on the other inner wall surface side (downward in the figure) of the opposing side wall of the electrical contact portion 501 so as to face the elastic contact piece 505. A gap B smaller than the thickness T of the male terminal 511 is provided between the contact portion 509 of the elastic contact piece 505 and the protrusion 507 facing the contact portion 509.

そこで、弾性接触片５０５と対向する突起５０７との間の隙間Ｂに雄端子５１１が挿入されると、弾性接触片５０５が突起５０７と反対側へ変位して接触荷重が発生する。雄端子５１１に対する高い接触信頼性を得るためには接触荷重を高くすることが有効であり、弾性接触片５０５と対向する突起５０７との間の隙間Ｂを小さくする等して高い接触荷重を得ている。   Therefore, when the male terminal 511 is inserted into the gap B between the elastic contact piece 505 and the protrusion 507 facing the elastic contact piece 505, the elastic contact piece 505 is displaced to the opposite side of the protrusion 507, and a contact load is generated. In order to obtain high contact reliability with respect to the male terminal 511, it is effective to increase the contact load, and a high contact load is obtained by reducing the gap B between the elastic contact piece 505 and the protrusion 507 facing the elastic contact piece 505. ing.

特開２００３−１２３９３５号公報JP 2003-123935 A

しかしながら、上述のように弾性接触片５０５と突起５０７との間の隙間Ｂを小さくする等して接触荷重を高くすると、端子挿入時の雄端子５１１の挿入力が同時に高くなるため、高い接触信頼性と低い端子挿入力との両立は非常に困難であった。   However, if the contact load is increased by reducing the gap B between the elastic contact piece 505 and the projection 507 as described above, the insertion force of the male terminal 511 at the time of inserting the terminal is increased at the same time, so that high contact reliability is achieved. Compatibility with low terminal insertion force is very difficult.

本発明は上記状況に鑑みてなされたもので、その目的は、低い端子挿入力と高い接触信頼性（高い接触荷重）とを両立できる雌端子構造を提供することにある。   This invention is made | formed in view of the said condition, The objective is to provide the female terminal structure which can make low terminal insertion force and high contact reliability (high contact load) compatible.

本発明に係る上記目的は、下記構成により達成される。
（１） 雄端子を先端開口部から受け入れる筒状の電気接続部と、前記電気接続部の内方に設けられて後端側基端部から前記先端開口部に向けて延びる弾性接触片と、前記弾性接触片の中間部にＶ字状に屈曲形成されて頂部が前記電気接続部の対向側壁の一方の内壁面に当接する屈曲部と、前記屈曲部の変形を規制するため該屈曲部に設けられた剛性アップ機構と、前記屈曲部より前記先端開口部側の前記弾性接触片に形成されて前記雄端子の電気接触部と接触する前方接触部と、前記屈曲部より後端側の前記弾性接触片に形成されて前記雄端子の電気接触部と接触する後方接触部と、前記後方接触部と前記対向側壁の他方の内壁面との間に形成されて前記雄端子の電気接触部の厚みよりも小さい後方間隙と、前記前方接触部と前記対向側壁の他方の内壁面との間に形成されて前記雄端子の電気接触部の厚みと略同等以下で、且つ前記後方間隙よりも大きい前方間隙と、を備えたことを特徴とする雌端子構造。 The above object of the present invention is achieved by the following configuration.
(1) A cylindrical electrical connection portion that receives the male terminal from the front end opening, an elastic contact piece that is provided inward of the electrical connection portion and extends from the rear end side base end toward the front end opening, A bent portion that is bent in a V shape at an intermediate portion of the elastic contact piece and a top portion abuts against one inner wall surface of the opposing side wall of the electrical connecting portion; and a bent portion that restricts deformation of the bent portion. A rigidity increasing mechanism provided; a front contact portion formed on the elastic contact piece on the tip opening side of the bent portion and in contact with the electrical contact portion of the male terminal; and the rear end side of the bent portion. A rear contact portion formed on an elastic contact piece and in contact with the electrical contact portion of the male terminal; and formed between the rear contact portion and the other inner wall surface of the opposite side wall to form an electrical contact portion of the male terminal. A rear gap smaller than the thickness, and the front contact portion and the opposite side wall. A female terminal structure comprising: a front gap formed between the other inner wall surface and substantially equal to or less than a thickness of an electrical contact portion of the male terminal and larger than the rear gap.

上記（１）の構成の雌端子構造によれば、電気接続部内に挿入された雄端子の電気接触部が弾性接触片の前方接触部を通過する際は、前方間隙が雄端子の電気接触部の厚みと略同等以下で且つ後方間隙よりも大きくされているので、雄端子の電気接触部は前方接触部を対向側壁の一方の内壁面側へ殆ど変位させないか或いは若干変位させるだけである。そこで、雄端子の電気接触部には弾性接触片による接触荷重が殆ど作用しないか或いは所定の接触荷重よりも低い僅かな接触荷重が作用するだけである。
そして、更に電気接続部内に挿入された雄端子の電気接触部が弾性接触片の後方接触部に達すると、後方間隙が雄端子の電気接触部の厚みよりも小さくされているので、雄端子の電気接触部が後方接触部を対向側壁の他方の内壁面と反対側の一方の内壁面側へ変位させる。後方接触部が対向側壁の一方の内壁面側へ変位させられると、弾性接触片は剛性アップ機構により変形が規制された屈曲部を支点とし揺動回転されるので、前方接触部が対向側壁の一方の内壁面と反対側の他方の内壁面側へ変位する。そこで、雄端子の電気接触部には前方接触部が強く押し付けられる（前方間隙が小さくなる）。その結果、前方接触部と後方接触部に発生した総合接触荷重として所定の接触荷重が雄端子の電気接触部に付与される。
従って、雄端子の電気接触部が弾性接触片の後方接触部に達するまでは、端子挿入力を小さく抑えることができ、雄端子の電気接触部が後方接触部を対向側壁の一方の内壁面側へ変位させることで、所定の接触荷重も確保することができる。 According to the female terminal structure having the above configuration (1), when the electrical contact portion of the male terminal inserted into the electrical connection portion passes through the front contact portion of the elastic contact piece, the front gap is the electrical contact portion of the male terminal. The electrical contact portion of the male terminal hardly displaces or slightly displaces the front contact portion toward one inner wall surface of the opposing side wall. Therefore, the contact load by the elastic contact piece hardly acts on the electrical contact portion of the male terminal, or only a slight contact load lower than the predetermined contact load acts.
Further, when the electrical contact portion of the male terminal inserted into the electrical connection portion reaches the rear contact portion of the elastic contact piece, the rear gap is made smaller than the thickness of the electrical contact portion of the male terminal. The electrical contact portion displaces the rear contact portion to one inner wall surface side opposite to the other inner wall surface of the opposing side wall. When the rear contact portion is displaced toward the one inner wall surface side of the opposing side wall, the elastic contact piece is swung around the bent portion whose deformation is restricted by the rigidity increasing mechanism. It is displaced toward the other inner wall surface opposite to the one inner wall surface. Therefore, the front contact portion is strongly pressed against the electrical contact portion of the male terminal (the front gap is reduced). As a result, a predetermined contact load is applied to the electrical contact portion of the male terminal as a total contact load generated at the front contact portion and the rear contact portion.
Therefore, until the electrical contact portion of the male terminal reaches the rear contact portion of the elastic contact piece, the terminal insertion force can be kept small, and the electrical contact portion of the male terminal moves the rear contact portion to one inner wall surface side of the opposing side wall. A predetermined contact load can be ensured by displacing to the right.

（２） 上記（１）の構成の雌端子構造であって、前記剛性アップ機構が、前記弾性接触片の幅方向中央位置で、前記屈曲部を頂部側から雄端子挿入方向に延びる溝状に凹ませて反対面側に突出させたビード加工部であることを特徴とする雌端子構造。 (2) The female terminal structure having the configuration of (1), wherein the rigidity increasing mechanism has a groove shape extending from the top side to the male terminal insertion direction at the center position in the width direction of the elastic contact piece. A female terminal structure, characterized in that it is a bead processed portion that is recessed and protruded to the opposite side.

上記（２）の構成の雌端子構造によれば、屈曲部の頂部側に、弾性接触片の幅方向に凹溝を挟んで二箇所の頂点が形成され、屈曲部がこの二箇所の頂点で一方の内壁面に当たるので、弾性接触片の幅方向に傾きのない安定的な揺動回転が可能となる。また、雄端子の電気接触部との接触後においても、弾性接触片が二箇所の支点で一方の内壁面に支持されるので、幅方向に傾きのない安定的な接触状態が維持される。   According to the female terminal structure having the above configuration (2), two vertices are formed on the top side of the bent portion with the concave groove in the width direction of the elastic contact piece, and the bent portion is at the two apexes. Since it hits one of the inner wall surfaces, stable swinging rotation without inclination in the width direction of the elastic contact piece is possible. Further, even after the contact of the male terminal with the electrical contact portion, the elastic contact piece is supported on one inner wall surface at two fulcrums, so that a stable contact state without inclination in the width direction is maintained.

（３） 上記（１）の構成の雌端子構造であって、前記剛性アップ機構が、前記弾性接触片における屈曲部の厚みを他の部位よりも厚くした厚肉部であることを特徴とする雌端子構造。 (3) The female terminal structure having the configuration of (1), wherein the rigidity increasing mechanism is a thick portion in which a thickness of a bent portion of the elastic contact piece is thicker than that of other portions. Female terminal structure.

上記（３）の構成の雌端子構造によれば、簡素な構造で弾性接触片の屈曲部の変形を規制することができる。   According to the female terminal structure having the configuration (3), the deformation of the bent portion of the elastic contact piece can be restricted with a simple structure.

本発明に係る雌端子によれば、低い端子挿入力と高い接触信頼性（高い接触荷重）とを両立できる。   The female terminal according to the present invention can achieve both a low terminal insertion force and high contact reliability (high contact load).

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. .

本発明の一実施形態に係る雌端子構造を有した雌端子の全体斜視図である。1 is an overall perspective view of a female terminal having a female terminal structure according to an embodiment of the present invention. 図１に示した雌端子の雄端子挿入方向に沿う縦断面図である。It is a longitudinal cross-sectional view in alignment with the male terminal insertion direction of the female terminal shown in FIG. （ａ）は図２のＡ−Ａ断面図、（ｂ）は（ａ）に示したビード加工部の変形例を示す断面図である。(A) is AA sectional drawing of FIG. 2, (b) is sectional drawing which shows the modification of the bead processing part shown to (a). 図１に示した雌端子と雄端子との嵌合状態を示した縦断面図である。It is the longitudinal cross-sectional view which showed the fitting state of the female terminal shown in FIG. 1, and a male terminal. 従来の雌端子と共に雄端子を示した雄端子挿入方向に沿う縦断面図である。It is a longitudinal cross-sectional view in alignment with the male terminal insertion direction which showed the male terminal with the conventional female terminal.

以下、本発明に係る実施形態を図面を参照して説明する。
本実施形態に係る雌端子構造は、矩形筒状の電気接続部１３の先端開口部１５から挿入された雄端子１７（図４参照）と電気的接続を行う雌端子１１に好適に用いることができる。本実施形態では雄端子１７が角ピン状接触部（電気接触部）２１を有する角ピンタイプとなるが、例えば丸ピンタイプやタブタイプ等とすることもできる。 Embodiments according to the present invention will be described below with reference to the drawings.
The female terminal structure according to the present embodiment is preferably used for the female terminal 11 that is electrically connected to the male terminal 17 (see FIG. 4) inserted from the distal end opening 15 of the rectangular cylindrical electrical connection portion 13. it can. In this embodiment, although the male terminal 17 becomes a square pin type which has the square pin-shaped contact part (electric contact part) 21, it can also be made into a round pin type, a tab type, etc., for example.

図１に示すように、本実施形態の雌端子１１は、導電性金属板からなる同一展開材料に叩き加工や曲げ加工等を施すことで、図例の各部が形成される。なお、本明細書中、雌端子１１は、雄端子１７の挿入側を前、その反対側を後として説明する。
雌端子１１は、電気接続部１３の後方に、導体圧着部２３と絶縁被覆圧着部２５とが連設されている。導体圧着部２３は、図示しない被覆電線から被覆を除去した導体を加締め固定する。絶縁被覆圧着部２５は、被覆電線を被覆の上から加締め固定する。 As shown in FIG. 1, the female terminal 11 of this embodiment forms each part of a figure example by performing a hit | damage process, a bending process, etc. to the same expansion | deployment material which consists of an electroconductive metal plate. In this specification, the female terminal 11 will be described with the insertion side of the male terminal 17 as the front and the opposite side as the rear.
In the female terminal 11, a conductor crimping portion 23 and an insulation coating crimping portion 25 are connected to the rear of the electrical connection portion 13. The conductor crimping portion 23 caulps and fixes a conductor from which a coating is removed from a coated electric wire (not shown). The insulation coating crimping portion 25 fixes the coated electric wire by crimping from above the coating.

電気接続部１３は、前端に雄端子１７の角ピン状接触部２１を受け入れる先端開口部１５を有する。図２に示すように、電気接続部１３の内方には、天壁２７の後端に接続された後端側基端部１８から先端開口部に向けて折り返して延びる片持ち梁状の弾性接触片１９が設けられる。
弾性接触片１９の中間部には、頂部３１が電気接続部１３の対向側壁の一方の内壁面である天壁２７の内面に当接可能とされた屈曲部２９がＶ字状に屈曲形成されている。この屈曲部２９は、後述する剛性アップ機構５５によって開き方向の変形が規制されている。 The electrical connection portion 13 has a front end opening 15 that receives the square pin-shaped contact portion 21 of the male terminal 17 at the front end. As shown in FIG. 2, on the inner side of the electrical connecting portion 13, a cantilever-like elastic member that extends from the rear end side base end portion 18 connected to the rear end of the top wall 27 toward the front end opening portion. A contact piece 19 is provided.
In the middle part of the elastic contact piece 19, a bent portion 29 is formed in a V shape so that the top portion 31 can come into contact with the inner surface of the top wall 27 that is one inner wall surface of the opposing side wall of the electrical connecting portion 13. ing. The bending portion 29 is restricted from being deformed in the opening direction by a rigidity increasing mechanism 55 described later.

弾性接触片１９は、先端開口部１５から挿入された雄端子１７の角ピン状接触部２１を電気接続部１３の対向側壁の他方の内壁面である底壁３７の内面に向かって押圧する（図４参照）。底壁３７には、電気接続部１３の内方に向かって突出して雄端子挿入方向に延びる突起３９が突設されている。突起３９は、突出先端面４１が、角ピン状接触部２１の他方の面（図中、下面）４３に接触する筒側接触部となる。   The elastic contact piece 19 presses the square pin-shaped contact portion 21 of the male terminal 17 inserted from the tip opening portion 15 toward the inner surface of the bottom wall 37 which is the other inner wall surface of the opposing side wall of the electrical connection portion 13 ( (See FIG. 4). On the bottom wall 37, a protrusion 39 is provided so as to protrude inward of the electrical connecting portion 13 and extend in the male terminal insertion direction. The protrusion 39 serves as a cylinder side contact portion in which the protruding tip surface 41 contacts the other surface (lower surface in the drawing) 43 of the square pin contact portion 21.

底壁３７の両側には側壁４５が立設され、一方の側壁４５は天壁２７に連続し、他方の側壁４５は天壁２７に上から被せられる上板４７に連続する。上板４７には、図示しないコネクタハウジングの端子収容室に係止する係止片４９が形成される。   Side walls 45 are erected on both sides of the bottom wall 37, one side wall 45 is continuous with the top wall 27, and the other side wall 45 is continuous with an upper plate 47 that covers the top wall 27 from above. The upper plate 47 is formed with a locking piece 49 that locks in a terminal housing chamber of a connector housing (not shown).

図２に示すように、弾性接触片１９には、屈曲部２９より先端開口部１５側に形成されて雄端子１７の角ピン状接触部２１と接触する前方接触部５１と、屈曲部２９より後端側に形成されて雄端子１７の角ピン状接触部２１と接触する後方接触部５３とが設けられている。これら前方接触部５１と後方接触部５３とは、角ピン状接触部２１の一方の面（図中、上面）３３と接触する。   As shown in FIG. 2, the elastic contact piece 19 includes a front contact portion 51 that is formed on the tip opening 15 side of the bent portion 29 and contacts the square pin-shaped contact portion 21 of the male terminal 17. A rear contact portion 53 that is formed on the rear end side and contacts the square pin-shaped contact portion 21 of the male terminal 17 is provided. The front contact portion 51 and the rear contact portion 53 are in contact with one surface (upper surface in the drawing) 33 of the square pin contact portion 21.

そこで、中間部にＶ字状に屈曲形成されると共に開き方向の変形が規制された屈曲部２９の頂部３１が天壁２７の内面に当接可能とされた弾性接触片１９は、後方接触部５３が天壁２７の内面側へ変位させられると、屈曲部２９の頂部３１を支点とし図２中反時計回りに揺動回転される。   Therefore, the elastic contact piece 19 that is bent at the middle portion in a V shape and whose top portion 31 of the bent portion 29 whose deformation in the opening direction is restricted can be brought into contact with the inner surface of the top wall 27 is provided in the rear contact portion. When 53 is displaced to the inner surface side of the top wall 27, it is pivoted and rotated counterclockwise in FIG.

弾性接触片１９が揺動回転される際の支点とし屈曲部２９の頂部３１が機能できるように、屈曲部２９には剛性を上げて屈曲部２９の開き方向の変形を規制するための剛性アップ機構５５が設けられる。
図３（ａ）に示すように、本実施形態の剛性アップ機構５５は、弾性接触片１９の幅方向中央位置で、屈曲部２９を頂部３１側から雄端子挿入方向に延びる溝状に凹ませて反対面側に突出させたビード加工部５７として形成される。このビード加工部５７によれば、屈曲部２９の頂部３１側に、弾性接触片１９の幅方向に凹溝６１を挟んで二箇所の頂点３１ａが形成され、頂部３１がこの二箇所の頂点３１ａで天壁２７の内面に当たるので、弾性接触片１９は幅方向に傾きがない安定的な揺動回転が可能となる。 Increased rigidity for restricting deformation of the bent portion 29 in the opening direction by increasing the rigidity of the bent portion 29 so that the top portion 31 of the bent portion 29 can function as a fulcrum when the elastic contact piece 19 is swung and rotated. A mechanism 55 is provided.
As shown in FIG. 3 (a), the rigidity increasing mechanism 55 of the present embodiment is configured such that the bent portion 29 is recessed in a groove shape extending from the top portion 31 side in the male terminal insertion direction at the center position in the width direction of the elastic contact piece 19. Thus, a bead processed portion 57 is formed to protrude to the opposite surface side. According to this bead processing portion 57, two apexes 31a are formed on the apex 31 side of the bent portion 29 with the concave groove 61 sandwiched in the width direction of the elastic contact piece 19, and the apex 31 is the two apexes 31a. Therefore, the elastic contact piece 19 can stably rotate and rotate with no inclination in the width direction.

なお、剛性アップ機構５５は、変形例として、図３（ｂ）に示すような構成であってもよい。すなわち、この変形例に係る剛性アップ機構５５は、弾性接触片１９の幅方向中央位置で、屈曲部２９を頂部３１の反対面側から雄端子挿入方向に延びる溝状に凹ませて頂部３１側に突出させたビード加工部５９として形成される。従って、ビード加工部５９が頂点３１ａを有することになる。   The rigidity increasing mechanism 55 may have a configuration as shown in FIG. That is, in the rigidity increasing mechanism 55 according to this modification, the bent portion 29 is recessed in a groove shape extending in the male terminal insertion direction from the opposite surface side of the top portion 31 at the center position in the width direction of the elastic contact piece 19. It is formed as a bead processed portion 59 that protrudes into the shape. Therefore, the bead processing part 59 has the apex 31a.

なお、剛性アップ機構５５は、弾性接触片１９における屈曲部２９の厚みを他の部位よりも厚くした厚肉部であってもよい。このような構成とすれば、簡素な構造で弾性接触片１９の屈曲部２９の開き方向の変形を規制することができる。   The rigidity increasing mechanism 55 may be a thick portion in which the thickness of the bent portion 29 in the elastic contact piece 19 is thicker than other portions. With such a configuration, the deformation in the opening direction of the bent portion 29 of the elastic contact piece 19 can be restricted with a simple structure.

更に、弾性接触片１９の後方接触部５３と底壁３７の突出先端面４１との間には、後方間隙Ｂｂが形成される。この後方間隙Ｂｂは、角ピン状接触部２１の厚みＴ２よりも必ず小さく形成されている。
また、弾性接触片１９の前方接触部５１と底壁３７の突出先端面４１との間には、前方間隙Ｂａが形成される。この前方間隙Ｂａは、角ピン状接触部２１の厚みＴ２と略同等以下で、且つ後方間隙Ｂｂよりも大きく形成されている。 Further, a rear gap Bb is formed between the rear contact portion 53 of the elastic contact piece 19 and the protruding front end surface 41 of the bottom wall 37. The rear gap Bb is always smaller than the thickness T2 of the square pin contact portion 21.
Further, a front gap Ba is formed between the front contact portion 51 of the elastic contact piece 19 and the protruding tip surface 41 of the bottom wall 37. The front gap Ba is substantially equal to or less than the thickness T2 of the square pin contact portion 21 and is larger than the rear gap Bb.

すなわち、角ピン状接触部２１の厚みＴ２と、前方間隙Ｂａと、後方間隙Ｂｂとは、Ｔ２≧Ｂａ＞Ｂｂの寸法関係となっている。
なお、角ピン状接触部２１の厚みＴ２と略同等以下とは、角ピン状接触部２１の厚みＴ２より僅かに大きいプラス公差の寸法をも含むものである。 That is, the thickness T2, the front gap Ba, and the rear gap Bb of the square pin contact portion 21 have a dimensional relationship of T2 ≧ Ba> Bb.
Note that “substantially equal to or less than the thickness T2 of the square pin-shaped contact portion 21” includes a plus tolerance dimension slightly larger than the thickness T2 of the square pin-shaped contact portion 21.

次に、本実施形態に係る雌端子構造を有する雌端子１１の作用を説明する。
電気接続部１３内に挿入された雄端子１７の角ピン状接触部２１が弾性接触片１９の前方接触部５１を通過する際は、前方間隙Ｂａが角ピン状接触部２１の厚みＴ２と略同等以下で且つ後方間隙Ｂｂよりも大きくされているので、角ピン状接触部２１は前方接触部５１を天壁２７の内面側へ殆ど変位させないか或いは若干変位させるだけである。 Next, the operation of the female terminal 11 having the female terminal structure according to this embodiment will be described.
When the square pin-shaped contact portion 21 of the male terminal 17 inserted into the electrical connection portion 13 passes through the front contact portion 51 of the elastic contact piece 19, the front gap Ba is substantially equal to the thickness T2 of the square pin-shaped contact portion 21. Since it is equal or less and larger than the rear gap Bb, the square pin contact portion 21 hardly displaces the front contact portion 51 toward the inner surface side of the top wall 27 or only slightly displaces it.

そこで、雄端子１７の角ピン状接触部２１には弾性接触片１９による接触荷重が殆ど作用しないか或いは所定の接触荷重よりも低い僅かな接触荷重が作用するだけである。
そして、更に電気接続部１３内に挿入された角ピン状接触部２１が弾性接触片１９の後方接触部５３に達すると、後方間隙Ｂｂが角ピン状接触部２１の厚みＴ２よりも小さくされているので、角ピン状接触部２１が後方接触部５３を底壁３７の突出先端面４１と反対側の天壁２７の内面側へ変位させる。後方接触部５３が天壁２７の内面側へ変位させられると、弾性接触片１９は剛性アップ機構５５により変形が規制された屈曲部２９の頂部３１を支点とし揺動回転されるので、前方接触部５１が天壁２７の内面と反対側の底壁３７の突出先端面４１側へ変位する。 Therefore, the contact load due to the elastic contact piece 19 hardly acts on the square pin-shaped contact portion 21 of the male terminal 17 or only a slight contact load lower than a predetermined contact load acts.
When the square pin contact portion 21 inserted into the electrical connection portion 13 reaches the rear contact portion 53 of the elastic contact piece 19, the rear gap Bb is made smaller than the thickness T2 of the square pin contact portion 21. Therefore, the square pin contact portion 21 displaces the rear contact portion 53 to the inner surface side of the top wall 27 on the opposite side of the projecting tip surface 41 of the bottom wall 37. When the rear contact portion 53 is displaced to the inner surface side of the top wall 27, the elastic contact piece 19 is swung and rotated about the top portion 31 of the bent portion 29 whose deformation is restricted by the rigidity increasing mechanism 55. The portion 51 is displaced toward the protruding tip surface 41 side of the bottom wall 37 opposite to the inner surface of the top wall 27.

そこで、雄端子１７の角ピン状接触部２１には前方接触部５１が強く押し付けられる（前方間隙Ｂａが小さくなる）。その結果、前方接触部５１と後方接触部５３に発生した総合接触荷重として所定の接触荷重が雄端子１７の角ピン状接触部２１に付与される。   Therefore, the front contact portion 51 is strongly pressed against the square pin contact portion 21 of the male terminal 17 (the front gap Ba is reduced). As a result, a predetermined contact load is applied to the square pin contact portion 21 of the male terminal 17 as a total contact load generated in the front contact portion 51 and the rear contact portion 53.

従って、雄端子１７の挿入し始めである角ピン状接触部２１が弾性接触片１９の後方接触部５３に達するまでは、端子挿入力を小さく抑えることができる。そして、図４に示したように、雄端子１７の挿入終了間際に角ピン状接触部２１が後方接触部５３を天壁２７の内面側へ変位させることで、所定の接触荷重を確保することができる。   Accordingly, the terminal insertion force can be kept small until the square pin contact portion 21 where the male terminal 17 starts to be inserted reaches the rear contact portion 53 of the elastic contact piece 19. Then, as shown in FIG. 4, the square pin contact portion 21 displaces the rear contact portion 53 toward the inner surface of the top wall 27 just before the insertion of the male terminal 17 to ensure a predetermined contact load. Can do.

即ち、上述した本実施形態に係る雌端子構造を有する雌端子１１によれば、低い端子挿入力と高い接触信頼性（高い接触荷重）とを両立できる。
なお、本発明の雌端子構造は、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。 That is, according to the female terminal 11 having the female terminal structure according to the present embodiment described above, both low terminal insertion force and high contact reliability (high contact load) can be achieved.
Note that the female terminal structure of the present invention is not limited to the above-described embodiment, and can be appropriately modified and improved. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

１１…雌端子
１３…電気接続部
１５…先端開口部
１７…雄端子
１８…後端側基端部
１９…弾性接触片
２１…角ピン状接触部（電気接触部）
２７…天壁（一方の内壁面）
２９…屈曲部
３１…頂部
３３…一方の面
３７…底壁
４１…突出先端面（他方の内壁面）
４３…他方の面
５１…前方接触部
５３…後方接触部
５５…剛性アップ機構
５７…ビード加工部
Ｂａ…前方間隙
Ｂｂ…後方間隙
Ｔ２…角ピン状接触部（電気接触部）の厚み DESCRIPTION OF SYMBOLS 11 ... Female terminal 13 ... Electrical connection part 15 ... Front-end opening part 17 ... Male terminal 18 ... Rear end side base end part 19 ... Elastic contact piece 21 ... Square pin-shaped contact part (electric contact part)
27 ... The ceiling (one inner wall)
29 ... Bending part 31 ... Top part 33 ... One surface 37 ... Bottom wall 41 ... Protruding front end surface (the other inner wall surface)
43 ... the other surface 51 ... the front contact portion 53 ... the rear contact portion 55 ... the rigidity increasing mechanism 57 ... the bead processing portion Ba ... the front gap Bb ... the rear gap T2 ... the thickness of the square pin contact portion (electric contact portion).

Claims (3)

雄端子を先端開口部から受け入れる筒状の電気接続部と、
前記電気接続部の内方に設けられて後端側基端部から前記先端開口部に向けて延びる弾性接触片と、
前記弾性接触片の中間部にＶ字状に屈曲形成されて頂部が前記電気接続部の対向側壁の一方の内壁面に当接する屈曲部と、
前記屈曲部の変形を規制するため該屈曲部に設けられた剛性アップ機構と、
前記屈曲部より前記先端開口部側の前記弾性接触片に形成されて前記雄端子の電気接触部と接触する前方接触部と、
前記屈曲部より後端側の前記弾性接触片に形成されて前記雄端子の電気接触部と接触する後方接触部と、
前記後方接触部と前記対向側壁の他方の内壁面との間に形成されて前記雄端子の電気接触部の厚みよりも小さい後方間隙と、
前記前方接触部と前記対向側壁の他方の内壁面との間に形成されて前記雄端子の電気接触部の厚みと略同等以下で、且つ前記後方間隙よりも大きい前方間隙と、
を備えたことを特徴とする雌端子構造。 A cylindrical electrical connection that receives the male terminal from the tip opening;
An elastic contact piece provided on the inner side of the electrical connection portion and extending from the rear end side base end portion toward the tip opening portion;
A bent portion that is bent in the shape of a letter V in the middle portion of the elastic contact piece, and the top portion contacts one inner wall surface of the opposing side wall of the electrical connecting portion;
A rigidity increasing mechanism provided at the bent portion to restrict deformation of the bent portion;
A front contact portion that is formed on the elastic contact piece on the tip opening side of the bent portion and contacts the electrical contact portion of the male terminal;
A rear contact portion formed on the elastic contact piece on the rear end side from the bent portion and in contact with the electrical contact portion of the male terminal;
A rear gap formed between the rear contact portion and the other inner wall surface of the opposing side wall and smaller than the thickness of the electrical contact portion of the male terminal;
A front gap formed between the front contact portion and the other inner wall surface of the opposite side wall, substantially equal to or less than the thickness of the electrical contact portion of the male terminal, and larger than the rear gap;
A female terminal structure comprising: 請求項１記載の雌端子構造であって、
前記剛性アップ機構が、前記弾性接触片の幅方向中央位置で、前記屈曲部を頂部側から雄端子挿入方向に延びる溝状に凹ませて反対面側に突出させたビード加工部であることを特徴とする雌端子構造。 The female terminal structure according to claim 1,
The rigidity increasing mechanism is a bead processing portion in which the bent portion is recessed in a groove shape extending in the male terminal insertion direction from the top side and protrudes to the opposite surface side at the center position in the width direction of the elastic contact piece. Characteristic female terminal structure. 請求項１記載の雌端子構造であって、
前記剛性アップ機構が、前記弾性接触片における屈曲部の厚みを他の部位よりも厚くした厚肉部であることを特徴とする雌端子構造。 The female terminal structure according to claim 1,
The female terminal structure, wherein the rigidity increasing mechanism is a thick portion in which a thickness of a bent portion of the elastic contact piece is thicker than that of other portions.
JP2011260811A 2011-11-29 2011-11-29 Female terminal structure Pending JP2013114937A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
JP2011260811A JP2013114937A (en) 2011-11-29 2011-11-29 Female terminal structure

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Country Status (1)

Country Link
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