JP6825697B2 - Connection terminal block, electrical equipment - Google Patents

Connection terminal block, electrical equipment Download PDF

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JP6825697B2
JP6825697B2 JP2019512328A JP2019512328A JP6825697B2 JP 6825697 B2 JP6825697 B2 JP 6825697B2 JP 2019512328 A JP2019512328 A JP 2019512328A JP 2019512328 A JP2019512328 A JP 2019512328A JP 6825697 B2 JP6825697 B2 JP 6825697B2
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tool
electric wire
section
tip
insertion hole
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JPWO2019138602A1 (en
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謹斎 町田
謹斎 町田
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Fuji Electric FA Components and Systems Co Ltd
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Fuji Electric FA Components and Systems Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/48275—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end with an opening in the housing for insertion of a release tool

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  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Description

本発明は、接続端子台、電気機器に関するものである。 The present invention relates to a connection terminal block and an electric device.

特許文献１には、電線を電気回路に接続するための端子構造として、電線をハウジングに差し込むだけでよいプッシュイン端子が開示されている。この端子構造では、略Ｖ字状に曲げられた板ばねを使用している。電線を差し込んでゆくと、まず電線の先端で板ばねを押してゆき、電線の先端が板ばねの先端を越えると、今度は板ばねの先端で電線を押し付ける係合状態へと移行する。 Patent Document 1 discloses a push-in terminal that only requires the electric wire to be inserted into a housing as a terminal structure for connecting the electric wire to an electric circuit. In this terminal structure, a leaf spring bent in a substantially V shape is used. When the electric wire is inserted, the leaf spring is first pushed by the tip of the electric wire, and when the tip of the electric wire exceeds the tip of the leaf spring, the engagement state in which the electric wire is pressed by the tip of the leaf spring is entered.

特許第５５３９８０９号公報Japanese Patent No. 5539809

板ばねが電線を押し付けている状態から電線を引き抜くための構造として、工具差込穴にマイナスドライバを差し込むことで板ばねを弾性変形させ、電線の引き抜きを可能にするものがある。マイナスドライバは刃先が一文字状であるため、工具差込穴に差し込むときの軸周りの角度によっては、板ばねに対して刃先の全体ではなく端部だけが接触し、板ばねに過剰な力が加わる可能性がある。
本発明の目的は、工具を差し込んだときに板ばねに過剰な力が加わることを抑制することである。As a structure for pulling out the electric wire from the state where the leaf spring is pressing the electric wire, there is a structure that elastically deforms the leaf spring by inserting a flat-blade screwdriver into the tool insertion hole to enable the electric wire to be pulled out. Since the cutting edge of a flat-blade screwdriver has a single letter shape, depending on the angle around the axis when inserting it into the tool insertion hole, only the end of the cutting edge comes into contact with the leaf spring, not the entire cutting edge, and excessive force is applied to the leaf spring. May join.
An object of the present invention is to prevent an excessive force from being applied to a leaf spring when a tool is inserted.

本発明の一態様に係る接続端子台は、
ハウジングに形成された電線差込穴と、
電線差込穴と並んでハウジングに形成された工具差込穴と、
ハウジングの内部で工具差込穴の奥側から電線差込穴の奥側へと延び、電線差込穴に電線が差し込まれると先端が電線に係合して電線の引き抜き方向の変位を抑制し、工具差込穴に工具が差し込まれると工具の先端に押されて係合が解除される板ばねと、を備え、
工具の先端側は、背中合わせとなる二つの端面が先端に向かうほど接近することで厚みが小さくなるように形成されており、
工具差込穴は、互いが板ばねの幅方向と平行な状態で対向し、奥側に向かうほど離隔距離が狭くなる一対の案内面を備え、
一対の案内面は、工具が係合を解除する位置へ到達するまでに、端面の各々に接触すると共に、少なくとも一方が端面に対して面接触する又は幅方向に沿って線接触するように設定されている。The connection terminal block according to one aspect of the present invention is
The wire insertion hole formed in the housing and
Tool insertion holes formed in the housing alongside the wire insertion holes,
Inside the housing, it extends from the back side of the tool insertion hole to the back side of the wire insertion hole, and when the wire is inserted into the wire insertion hole, the tip engages with the wire and suppresses the displacement of the wire in the pull-out direction. With a leaf spring, which is pushed by the tip of the tool to disengage when the tool is inserted into the tool insertion hole,
The tip side of the tool is formed so that the thickness becomes smaller as the two back-to-back end faces approach each other toward the tip.
The tool insertion holes are provided with a pair of guide surfaces that face each other in a state parallel to the width direction of the leaf spring and the separation distance becomes narrower toward the back side.
The pair of guide surfaces are set to contact each of the end faces and at least one to face contact or line contact along the width direction by the time the tool reaches the disengagement position. Has been done.

本発明によれば、工具が差し込まれると、案内面に沿って工具の軸周りの角度が案内され、係合を解除する位置へ到達したときには、工具の端面と工具差込穴の案内面とが面接触又は線接触する。したがって、工具の先端のうち、幅方向の全体が板ばねに接触するようになるので、板ばねに過剰な力が加わることを抑制できる。 According to the present invention, when the tool is inserted, the angle around the axis of the tool is guided along the guide surface, and when the position of disengagement is reached, the end face of the tool and the guide surface of the tool insertion hole are used. Makes surface contact or line contact. Therefore, the entire tip of the tool in the width direction comes into contact with the leaf spring, so that it is possible to prevent an excessive force from being applied to the leaf spring.

接続端子台の斜視図である。It is a perspective view of the connection terminal block. 部分的に内部を示した接続端子台の斜視図である。It is a perspective view of the connection terminal block which partially showed the inside. フェルール端子を差し込む前の状態を示す断面図である。It is sectional drawing which shows the state before inserting the ferrule terminal. 端子部が板ばねの自由端側区間に当接した状態の断面図である。It is sectional drawing of the state in which the terminal part is in contact with the free end side section of a leaf spring. 端子部の先端が自由端側区間の先端に達した状態の断面図である。It is sectional drawing in the state which the tip of the terminal part reached the tip of the section on the free end side. フェルール端子の差し込みが完了した状態の断面図である。It is sectional drawing in the state which the insertion of the ferrule terminal is completed. 工具を差し込んだ状態の断面図である。It is sectional drawing in a state where a tool is inserted. 工具を差し込むときの様子を示した図である（平行）。It is the figure which showed the state when the tool is inserted (parallel). 工具を差し込むときの様子を示した図である（非平行）。It is the figure which showed the state when the tool is inserted (non-parallel).

以下、本発明の実施形態を図面に基づいて説明する。なお、各図面は模式的なものであって、現実のものとは異なる場合がある。また、以下の実施形態は、本発明の技術的思想を具体化するための装置や方法を例示するものであり、構成を下記のものに特定するものでない。すなわち、本発明の技術的思想は、特許請求の範囲に記載された技術的範囲内において、種々の変更を加えることができる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that each drawing is a schematic one and may differ from the actual one. In addition, the following embodiments exemplify devices and methods for embodying the technical idea of the present invention, and do not specify the configuration to the following. That is, the technical idea of the present invention can be modified in various ways within the technical scope described in the claims.

《構成》
図１は、接続端子台の斜視図である。
以下の説明では、互いに直交する三方向を、便宜的に、幅方向、縦方向、及び奥行方向とする。
接続端子台１１は、リレーを外部回路に接続するためのターミナルソケットである。縦方向の一端側には、一次側のリード線を接続可能なコイル端子用の一次側端子部１２が形成されている。縦方向の中央には、例えば４極の接点を有するリレーを接続可能なリレー端子部１３が形成されている。縦方向の他端側には、コモン端子用、ａ接点端子用、ｂ接点端子用の二次側のリード線を接続可能な二次側端子部１４が形成されている。一次側端子部１２、リレー端子部１３、及び二次側端子部１４は、ハウジング１５によって一体化されている。
ハウジング１５において、奥行方向の手前側となる上面は、リレー端子部１３が一次側端子部１２及び二次側端子部１４よりも奥行方向の奥側に配置されている。"Constitution"
FIG. 1 is a perspective view of a connection terminal block.
In the following description, the three directions orthogonal to each other are, for convenience, the width direction, the vertical direction, and the depth direction.
The connection terminal block 11 is a terminal socket for connecting a relay to an external circuit. A primary side terminal portion 12 for a coil terminal to which a lead wire on the primary side can be connected is formed on one end side in the vertical direction. At the center in the vertical direction, for example, a relay terminal portion 13 to which a relay having four-pole contacts can be connected is formed. On the other end side in the vertical direction, a secondary side terminal portion 14 to which a secondary side lead wire for a common terminal, an a contact terminal, and a b contact terminal can be connected is formed. The primary side terminal portion 12, the relay terminal portion 13, and the secondary side terminal portion 14 are integrated by the housing 15.
In the housing 15, the relay terminal portion 13 is arranged on the depth side in the depth direction with respect to the primary side terminal portion 12 and the secondary side terminal portion 14 on the upper surface which is the front side in the depth direction.

一次側端子部１２は、スプリング式の端子構造であり、ハウジング１５の上面には、奥行方向に沿ってリード線を差し込み可能な複数の電線差込穴２１が形成されている。幅方向の一端側には、一方の極性用として二つの電線差込穴２１ｃと２１ｄが形成され、幅方向の他端側には、他方の極性用として二つの電線差込穴２１ａと２１ｂが形成されている。したがって、一次側端子部１２には計４個の電線差込穴２１がある。極性が同一となる二つの電線差込穴２１ａと２１ｂ、または２１ｃと２１ｄは、幅方向及び縦方向の双方にずらして配列されている。ハウジング１５の上面には、各電線差込穴２１に対して縦方向に並び、奥行方向に沿って工具を差し込み可能な複数の工具差込穴２２が形成されている。工具差込穴２２は、各電線差込穴２１ａ〜２１ｄに対して一つずつ設けられており、夫々、電線差込穴２１ａ〜２１ｄよりも縦方向の他端側に配置されている。したがって、一次側端子部１２には計４個の工具差込穴２２がある。 The primary side terminal portion 12 has a spring-type terminal structure, and a plurality of electric wire insertion holes 21 into which lead wires can be inserted are formed on the upper surface of the housing 15 along the depth direction. Two wire insertion holes 21c and 21d are formed on one end side in the width direction for one polarity, and two wire insertion holes 21a and 21b are formed on the other end side in the width direction for the other polarity. It is formed. Therefore, the primary side terminal portion 12 has a total of four electric wire insertion holes 21. The two wire insertion holes 21a and 21b, or 21c and 21d, which have the same polarity, are arranged so as to be offset in both the width direction and the vertical direction. On the upper surface of the housing 15, a plurality of tool insertion holes 22 are formed which are arranged in the vertical direction with respect to each electric wire insertion hole 21 and in which a tool can be inserted along the depth direction. One tool insertion hole 22 is provided for each of the electric wire insertion holes 21a to 21d, and each of the tool insertion holes 22 is arranged on the other end side in the vertical direction with respect to the electric wire insertion holes 21a to 21d. Therefore, the primary side terminal portion 12 has a total of four tool insertion holes 22.

リレー端子部１３は、プラグイン式の端子構造であり、ハウジング１５の上面には、奥行方向に沿ってプラグを差し込み可能な複数のプラグ差込口２３が形成されている。縦方向の一端側には、コイル端子用として二つのプラグ差込口２３が形成されている。縦方向の他端側には、コモン端子用、ａ接点端子用、及びｂ接点端子用として三つのプラグ差込口２３が縦方向に沿って形成されており、これら三つを一組とし、幅方向に沿って四組分が配列されている。したがって、リレー端子部１３には計１４個のプラグ差込口２３がある。 The relay terminal portion 13 has a plug-in type terminal structure, and a plurality of plug insertion ports 23 into which plugs can be inserted along the depth direction are formed on the upper surface of the housing 15. Two plug insertion ports 23 are formed on one end side in the vertical direction for coil terminals. On the other end side in the vertical direction, three plug insertion ports 23 for the common terminal, the a contact terminal, and the b contact terminal are formed along the vertical direction, and these three are made into a set. Four sets are arranged along the width direction. Therefore, the relay terminal portion 13 has a total of 14 plug insertion ports 23.

二次側端子部１４は、スプリング式の端子構造であり、ハウジング１５の上面には、奥行方向に沿ってリード線を差し込み可能な４極に対応する複数の電線差込穴２４が形成されている。二次側端子部１４は、縦方向の一端側から他端側に向けて、奥行方向の高さが順に低くなる三つの段がある。上段には、例えばｂ接点端子用として１極あたり二つの電線差込穴２４ａ〜２４ｈが形成されている。中段には、例えばａ接点端子用として１極あたり二つの電線差込穴２４ｉ〜２４ｐが形成されている。下段には、例えばコモン端子用として１極あたり二つの電線差込穴２４ｑ〜２４ｘが形成されている。各段において、１電極の二つの電線差込穴２４（例えば２４ａと２４ｂ）は、幅方向及び縦方向の双方にずらして配列されている。これら六つの電線差込穴２４（例えば２４ａ、２４ｂ、２４ｉ、２４ｊ、２４ｑ、及び２４ｒ）を一組とし、幅方向に沿って４極分が配列されている。したがって、二次側端子部１４には計２４個の電線差込穴２４がある。ハウジング１５の上面には、各電線差込穴２４に対して縦方向に並び、奥行方向に沿って工具を差し込み可能な複数の工具差込穴２５が形成されている。各段において、工具差込穴２５は、各電線差込穴２４ａ〜２４ｘに対して一つずつ設けられており、夫々、電線差込穴２４よりも縦方向の一端側に配置されている。したがって、二次側端子部１４には計２４個の工具差込穴２５がある。 The secondary side terminal portion 14 has a spring-type terminal structure, and a plurality of electric wire insertion holes 24 corresponding to four poles into which lead wires can be inserted along the depth direction are formed on the upper surface of the housing 15. There is. The secondary side terminal portion 14 has three steps in which the height in the depth direction decreases in order from one end side to the other end side in the vertical direction. In the upper stage, for example, two electric wire insertion holes 24a to 24h are formed per pole for the b contact terminal. In the middle stage, for example, two electric wire insertion holes 24i to 24p are formed per pole for the a contact terminal. In the lower stage, for example, two electric wire insertion holes 24q to 24x are formed per pole for common terminals. In each stage, the two wire insertion holes 24 (for example, 24a and 24b) of one electrode are arranged so as to be offset in both the width direction and the vertical direction. These six wire insertion holes 24 (for example, 24a, 24b, 24i, 24j, 24q, and 24r) are set as a set, and four poles are arranged along the width direction. Therefore, the secondary side terminal portion 14 has a total of 24 electric wire insertion holes 24. On the upper surface of the housing 15, a plurality of tool insertion holes 25 are formed which are arranged in the vertical direction with respect to each electric wire insertion hole 24 and in which a tool can be inserted along the depth direction. In each stage, one tool insertion hole 25 is provided for each of the electric wire insertion holes 24a to 24x, and each is arranged on one end side in the vertical direction with respect to the electric wire insertion hole 24. Therefore, the secondary side terminal portion 14 has a total of 24 tool insertion holes 25.

図２は、部分的に内部を示した接続端子台の斜視図である。
一次側端子部１２、及び二次側端子部１４は、基本的に同様の構造であるため、ここでは二次側端子部１４を例に説明する。
ハウジング１５の内部には、各プラグ差込口２３における奥行方向の奥側に、刃受けばね３１が設けられている。刃受けばね３１は、対向し付勢し合う一対のばね片を備え、この一対のばね片の間に差し込まれたプラグを挟持する。各電線差込穴２４ａ〜２４ｘにおける奥行方向の奥側には、スプリング金具３２が設けられており、各スプリング金具３２は中間ベース４６に取付けられている。スプリング金具３２は、奥行方向及び幅方向と略平行な押付面３３と、この押付面３３に対して付勢された板ばね３４とを備え、これら押付面３３と板ばね３４との間に差し込まれたリード線を挟持する。刃受けばね３１及びスプリング金具３２よりも奥行方向の奥側には、これらを電気的に接続する中継導電板３５が設けられている。中継導電板３５は、コイル端子用に二系統あり、コモン端子用、ａ接点端子用、及びｂ接点端子用に、夫々、四系統ある。FIG. 2 is a perspective view of a connection terminal block partially showing the inside.
Since the primary side terminal portion 12 and the secondary side terminal portion 14 have basically the same structure, the secondary side terminal portion 14 will be described here as an example.
Inside the housing 15, a blade receiving spring 31 is provided on the inner side of each plug insertion port 23 in the depth direction. The blade receiving spring 31 includes a pair of spring pieces that face each other and urge each other, and sandwiches a plug inserted between the pair of spring pieces. Spring metal fittings 32 are provided on the inner side of the electric wire insertion holes 24a to 24x in the depth direction, and each spring metal fitting 32 is attached to the intermediate base 46. The spring metal fitting 32 includes a pressing surface 33 substantially parallel to the depth direction and the width direction, and a leaf spring 34 urged against the pressing surface 33, and is inserted between the pressing surface 33 and the leaf spring 34. Hold the lead wire. A relay conductive plate 35 for electrically connecting these is provided on the inner side in the depth direction of the blade receiving spring 31 and the spring metal fitting 32. The relay conductive plate 35 has two systems for the coil terminal, and four systems for the common terminal, the a contact terminal, and the b contact terminal, respectively.

電線差込穴２４に差し込まれるリード線１６（電線）には、フェルール端子１７が圧着されている。ここでは、図１の電線差込穴２４ｘに差し込まれたフェルール端子１７を示す。フェルール端子１７は、より線のバラケを防止し、電気接続の品質を安定させるための棒形圧着端子である。フェルール端子１７は、絶縁されたカラー部１８と、端子部１９と、を備える。カラー部１８の先端側には、先端に向かうほど小径となるテーパ面１８ａが形成されており、端子部１９はカラー部１８の直径よりも細い。
板ばね３４は、ハウジング１５の電線差込穴２４にリード線１６が差し込まれると、ハウジング１５の内部で端子部１９と係合し、引き抜き方向の変位を抑制する。また、工具差込穴２５に工具（図示省略）が差し込まれると、ハウジング１５の内部で端子部１９との係合が解除される。A ferrule terminal 17 is crimped to a lead wire 16 (electric wire) inserted into the electric wire insertion hole 24. Here, the ferrule terminal 17 inserted into the electric wire insertion hole 24x of FIG. 1 is shown. The ferrule terminal 17 is a rod-shaped crimp terminal for preventing the stranded wire from falling apart and stabilizing the quality of the electrical connection. The ferrule terminal 17 includes an insulated collar portion 18 and a terminal portion 19. A tapered surface 18a having a smaller diameter toward the tip is formed on the tip side of the collar portion 18, and the terminal portion 19 is smaller than the diameter of the collar portion 18.
When the lead wire 16 is inserted into the electric wire insertion hole 24 of the housing 15, the leaf spring 34 engages with the terminal portion 19 inside the housing 15 to suppress displacement in the pull-out direction. Further, when a tool (not shown) is inserted into the tool insertion hole 25, the engagement with the terminal portion 19 is released inside the housing 15.

次に、電線差込穴２４の構造について説明する。
二次側端子部１４に形成された電線差込穴２４は、何れも同一の構造であるが、ここでは下段に形成された電線差込穴２４を例に説明する。
図３は、フェルール端子を差し込む前の状態を示す断面図である。
電線差込穴２４は、ハウジング１５の内部へと向かって順に、大径部４３と、当接部４４と、小径部４５と、を備える。大径部４３の直径は、カラー部１８よりも僅かに大きい寸法である。当接部４４は、奥行方向の奥側に向かうほど小径となるテーパ面である。奥行方向に対する当接部４４のテーパ角度は、奥行方向に対するテーパ面１８ａの角度よりも大きい。小径部４５の直径は、カラー部１８の直径よりも小さく、且つ端子部１９の直径よりも大きな寸法である。Next, the structure of the electric wire insertion hole 24 will be described.
The electric wire insertion holes 24 formed in the secondary side terminal portion 14 have the same structure, but here, the electric wire insertion holes 24 formed in the lower stage will be described as an example.
FIG. 3 is a cross-sectional view showing a state before the ferrule terminal is inserted.
The electric wire insertion hole 24 includes a large diameter portion 43, a contact portion 44, and a small diameter portion 45 in this order toward the inside of the housing 15. The diameter of the large diameter portion 43 is slightly larger than that of the collar portion 18. The contact portion 44 is a tapered surface whose diameter becomes smaller toward the inner side in the depth direction. The taper angle of the contact portion 44 with respect to the depth direction is larger than the angle of the tapered surface 18a with respect to the depth direction. The diameter of the small diameter portion 45 is smaller than the diameter of the collar portion 18 and larger than the diameter of the terminal portion 19.

板ばね３４は、例えばステンレスによって形成されており、板厚は０.５ｍｍ程度で均一である。板ばね３４は、自由端側区間５１と、固定端側区間５２と、第一の曲げ区間５３と、第二の曲げ区間５４と、工具接触区間５５と、を備える。ハウジング１５の内部で端子部１９が通る位置を端子進路５６（電線進路）とする。
自由端側区間５１は、先端が差し込み方向の奥側及び端子進路５６に向かって直線状に突出し、板面が端子進路５６と交差するように配置され、且つ押付面３３に向かって付勢された区間である。フェルール端子１７が差し込まれていない状態において、自由端側区間５１の先端５１ａは、押付面３３に当接している。
固定端側区間５２は、中間ベース４６に固定され、端子進路５６と平行に延びる直線状の区間である。The leaf spring 34 is made of, for example, stainless steel, and has a uniform plate thickness of about 0.5 mm. The leaf spring 34 includes a free end side section 51, a fixed end side section 52, a first bending section 53, a second bending section 54, and a tool contact section 55. The position where the terminal portion 19 passes inside the housing 15 is defined as the terminal course 56 (electric wire course).
The free end side section 51 is arranged so that the tip thereof protrudes linearly toward the inner side in the insertion direction and the terminal course 56, the plate surface intersects the terminal course 56, and is urged toward the pressing surface 33. It is a section. In a state where the ferrule terminal 17 is not inserted, the tip 51a of the free end side section 51 is in contact with the pressing surface 33.
The fixed end side section 52 is a linear section fixed to the intermediate base 46 and extending in parallel with the terminal path 56.

第一の曲げ区間５３は、自由端側区間５１と固定端側区間５２との間に介在し、差し込み方向の手前側から見て凸となる側に湾曲させた区間である。曲率半径が小さ過ぎると、塑性変形しやすくなり、さらに弾性力が弱くなるため、曲率半径は板厚の２倍以上に設定されており、好ましくは３倍以上である。したがって、ここでは１.５ｍｍ以上の曲率半径とすることが好ましい。
第二の曲げ区間５４は、自由端側区間５１と第一の曲げ区間５３との間に介在し、差し込み方向の手前側、又は端子進路５６から見て凹となる側に曲げられた区間である。
工具接触区間５５は、第一の曲げ区間５３と第二の曲げ区間５４との間に介在し、工具が差し込まれたときに、工具の外周面によって端子進路５６に対して板ばね３４の固定端側へと押される直線状の区間である。The first bending section 53 is a section that is interposed between the free end side section 51 and the fixed end side section 52 and is curved to a convex side when viewed from the front side in the insertion direction. If the radius of curvature is too small, plastic deformation is likely to occur and the elastic force is weakened. Therefore, the radius of curvature is set to twice or more, preferably three times or more the plate thickness. Therefore, it is preferable that the radius of curvature is 1.5 mm or more here.
The second bending section 54 is a section that is interposed between the free end side section 51 and the first bending section 53 and is bent toward the front side in the insertion direction or a side that is concave when viewed from the terminal path 56. is there.
The tool contact section 55 is interposed between the first bending section 53 and the second bending section 54, and when the tool is inserted, the leaf spring 34 is fixed to the terminal path 56 by the outer peripheral surface of the tool. It is a straight section pushed to the end side.

板ばね３４の動作について説明する。
図４は、端子部が板ばねの自由端側区間に当接した状態の断面図である。
電線差込穴２４にフェルール端子１７を差し込んでゆくと、まず端子部１９が小径部４５を通過し、端子部１９の先端１９ａが、板ばね３４における自由端側区間５１の板面に当接する。
この状態からフェルール端子１７を押し込んでゆくと、端子部１９の先端１９ａが板ばね３４における自由端側区間５１の板面を、奥行方向の奥側へと押してゆく。このとき、自由端側区間５１から工具接触区間５５までの範囲が、第一の曲げ区間５３の曲率中心を支点にして回動し、固定端側区間５２に対して工具接触区間５５の開き度合を狭める、つまり閉じる方向に板ばね３４を弾性変形させてゆく。The operation of the leaf spring 34 will be described.
FIG. 4 is a cross-sectional view of a state in which the terminal portion is in contact with the free end side section of the leaf spring.
When the ferrule terminal 17 is inserted into the electric wire insertion hole 24, the terminal portion 19 first passes through the small diameter portion 45, and the tip 19a of the terminal portion 19 comes into contact with the plate surface of the free end side section 51 of the leaf spring 34. ..
When the ferrule terminal 17 is pushed in from this state, the tip 19a of the terminal portion 19 pushes the plate surface of the free end side section 51 of the leaf spring 34 toward the depth side in the depth direction. At this time, the range from the free end side section 51 to the tool contact section 55 rotates about the center of curvature of the first bending section 53 as a fulcrum, and the degree of opening of the tool contact section 55 with respect to the fixed end side section 52. The leaf spring 34 is elastically deformed in the direction of narrowing, that is, closing.

図５は、端子部の先端が自由端側区間の先端に達した状態の断面図である。
フェルール端子１７をさらに押し込んでゆくと、端子部１９の先端１９ａが自由端側区間５１の先端５１ａに達する。
フェルール端子１７をさらに押し込み、端子部１９の先端１９ａが自由端側区間５１の先端５１ａを越えると、端子部１９は自由端側区間５１の先端５１ａと押付面３３との間に割り込むように進入する。このとき、板ばね３４の弾性力により、自由端側区間５１の先端５１ａが端子部１９を押付面３３に押し付ける係合状態へと移行する。FIG. 5 is a cross-sectional view of a state in which the tip of the terminal portion reaches the tip of the free end side section.
When the ferrule terminal 17 is further pushed in, the tip 19a of the terminal portion 19 reaches the tip 51a of the free end side section 51.
When the ferrule terminal 17 is further pushed in and the tip 19a of the terminal portion 19 exceeds the tip 51a of the free end side section 51, the terminal portion 19 enters so as to cut in between the tip 51a of the free end side section 51 and the pressing surface 33. To do. At this time, due to the elastic force of the leaf spring 34, the tip 51a of the free end side section 51 shifts to the engaged state in which the terminal portion 19 is pressed against the pressing surface 33.

自由端側区間５１は奥行方向の奥側へ向かって突出しているため、この係合状態では、端子部１９の差し込み方向への変位が順方向となり許容される。一方、引き抜き方向への変位は、自由端側区間５１を逆撫でる逆方向となるため、自由端側区間５１の先端５１ａが端子部１９へ引っ掛かり、引き抜き方向の変位が抑制される。したがって、フェルール端子１７の緩みや抜け落ちを抑制できる。このように、自由端側区間５１の先端５１ａと押付面３３とによって端子部１９が挟持されることで、端子部１９を保持した拘束状態となる。なお、端子部１９の幅寸法は１.５ｍｍ程度であり、自由端側区間５１の先端５１ａと押付面３３との間には、端子部１９の幅寸法だけ隙間が空くようになる。
ここでは、便宜上、フェルール端子１７に傾きがない状態を描いているが、実際には端子部１９が板ばね３４によって押付面３３の側に押圧されることで、フェルール端子１７が奥行方向に対して傾いた状態となる。したがって、フェルール端子１７を差し込んだときに、僅かな傾きを積極的に許容するために、大径部４３の直径、当接部４４のテーパ角度、小径部４５の直径等が設定されている。Since the free end side section 51 projects toward the depth side in the depth direction, the displacement of the terminal portion 19 in the insertion direction is allowed in the forward direction in this engaged state. On the other hand, since the displacement in the pull-out direction is in the reverse direction of stroking the free end side section 51 in the reverse direction, the tip 51a of the free end side section 51 is caught by the terminal portion 19, and the displacement in the pull-out direction is suppressed. Therefore, loosening or falling off of the ferrule terminal 17 can be suppressed. In this way, the terminal portion 19 is sandwiched between the tip end 51a of the free end side section 51 and the pressing surface 33, so that the terminal portion 19 is held in a restrained state. The width dimension of the terminal portion 19 is about 1.5 mm, and there is a gap between the tip 51a of the free end side section 51 and the pressing surface 33 by the width dimension of the terminal portion 19.
Here, for convenience, a state in which the ferrule terminal 17 is not tilted is drawn, but in reality, the terminal portion 19 is pressed toward the pressing surface 33 by the leaf spring 34, so that the ferrule terminal 17 is pushed in the depth direction. It becomes a tilted state. Therefore, the diameter of the large diameter portion 43, the taper angle of the contact portion 44, the diameter of the small diameter portion 45, and the like are set in order to positively allow a slight inclination when the ferrule terminal 17 is inserted.

図６は、フェルール端子の差し込みが完了した状態の断面図である。
フェルール端子１７をさらに押し込んでゆき、カラー部１８におけるテーパ面１８ａの先端側が、電線差込穴２４の当接部４４に当接すると、それ以上の差し込みが阻止され停止する。このとき、端子部１９の先端１９ａは、ハウジング１５の内部における底面４７に対して隙間があくように設定されている。ここでは、カラー部１８の長さが６.０ｍｍ程度、端子部１９の長さは８.０ｍｍ程度であり、全長１４.０ｍｍ程度のものを使用している。FIG. 6 is a cross-sectional view of a state in which the ferrule terminal has been inserted.
When the ferrule terminal 17 is further pushed in and the tip end side of the tapered surface 18a of the collar portion 18 abuts on the abutting portion 44 of the electric wire insertion hole 24, further insertion is blocked and stopped. At this time, the tip 19a of the terminal portion 19 is set so as to have a gap with respect to the bottom surface 47 inside the housing 15. Here, the length of the collar portion 18 is about 6.0 mm, the length of the terminal portion 19 is about 8.0 mm, and the total length is about 14.0 mm.

図７は、工具を差し込んだ状態の断面図である。
板ばね３４が端子部１９と係合している場合、奥行方向の手前側から見て、工具差込穴２５は、自由端側区間５１における縦方向の他端側から、第一の曲げ区間５３における縦方向の他端側に至る領域と重なる位置に配置されている。工具差込穴２５は、奥行方向の奥側に向かうほど端子部１９へと接近するように、奥行方向に対して１０度ほど傾斜して形成されている。板ばね３４が端子部１９と係合している場合、工具接触区間５５は工具差込穴２５の軸線と略平行に延びている。工具６１には、例えばマイナスドライバが使用される。FIG. 7 is a cross-sectional view in a state where the tool is inserted.
When the leaf spring 34 is engaged with the terminal portion 19, the tool insertion hole 25 is the first bending section from the other end side in the vertical direction in the free end side section 51 when viewed from the front side in the depth direction. It is arranged at a position overlapping the region extending to the other end side in the vertical direction in 53. The tool insertion hole 25 is formed so as to be inclined by about 10 degrees with respect to the depth direction so as to approach the terminal portion 19 toward the depth side in the depth direction. When the leaf spring 34 is engaged with the terminal portion 19, the tool contact section 55 extends substantially parallel to the axis of the tool insertion hole 25. For the tool 61, for example, a flat-blade screwdriver is used.

工具６１を差し込むと、第一の曲げ区間５３における縦方向の一端側から工具接触区間５５に至る範囲に、工具６１の外周面が滑りながら接触し、工具接触区間５５を縦方向の一端側へと押しやる。あるいは、自由端側区間５１における縦方向の他端側から第二の曲げ区間５４に至る範囲に、工具６１の先端が当接し、自由端側区間５１を押し下げる。このように、工具接触区間５５を縦方向の一端側へ押しやるか、自由端側区間５１を押し下げることにより、固定端側区間５２に対して工具接触区間５５の開き度合を狭める、つまり閉じる方向に板ばね３４を弾性変形させる。これにより、自由端側区間５１の先端５１ａと端子部１９との係合状態が解除され、端子部１９は板ばね３４による拘束から解放されることになり、フェルール端子１７の引き抜きが可能となる。 When the tool 61 is inserted, the outer peripheral surface of the tool 61 slides into contact with the range from one end side in the vertical direction to the tool contact section 55 in the first bending section 53, and the tool contact section 55 moves to one end side in the vertical direction. I will push it. Alternatively, the tip of the tool 61 comes into contact with the range from the other end side in the vertical direction to the second bending section 54 in the free end side section 51, pushing down the free end side section 51. In this way, by pushing the tool contact section 55 toward one end in the vertical direction or pushing down the free end side section 51, the degree of opening of the tool contact section 55 with respect to the fixed end side section 52 is narrowed, that is, in the closing direction. The leaf spring 34 is elastically deformed. As a result, the engagement state between the tip 51a of the free end side section 51 and the terminal portion 19 is released, the terminal portion 19 is released from the restraint by the leaf spring 34, and the ferrule terminal 17 can be pulled out. ..

次に、工具６１及び工具差込穴２５について説明する。
図８は、工具を差し込むときの様子を示した図（平行）であり、工具の先端を工具差込穴の案内面に対して、平行となるように挿入した場合を示している。
工具６１は、前述したようにマイナスドライバである。したがって、先端側は、背中合わせとなる二つの端面６２が先端に向かうほど接近することで厚みが小さくなるように形成されており、刃先が一文字状となる。二つの端面６２は線形テーパである。先端側の幅は一定であり、軸の直径と同一である。
工具差込穴２５は、奥行方向の手前側から見て略矩形であり、互いが板ばね３４の幅方向と平行な状態で対向し、奥側に向かうほど離隔距離が狭くなる一対の案内面７１、７２を備える。Next, the tool 61 and the tool insertion hole 25 will be described.
FIG. 8 is a view (parallel) showing a state when the tool is inserted, and shows a case where the tip of the tool is inserted so as to be parallel to the guide surface of the tool insertion hole.
The tool 61 is a flat-blade screwdriver as described above. Therefore, the tip side is formed so that the thickness becomes smaller as the two back-to-back end faces 62 approach each other toward the tip, and the cutting edge has a single character shape. The two end faces 62 are linearly tapered. The width on the tip side is constant and is the same as the diameter of the shaft.
The tool insertion holes 25 are substantially rectangular when viewed from the front side in the depth direction, face each other in a state parallel to the width direction of the leaf spring 34, and the separation distance becomes narrower toward the back side. It includes 71 and 72.

電線差込穴２４に近い側を案内面７１とし、電線差込穴２４から遠い側を案内面７２とする。案内面７１、７２同士がなす角度は、工具６１における端面６２のテーパ角度と同一である。案内面７１、７２の双方は、奥行方向の手前側になるほどフェルール端子１７から遠ざかる側に傾斜している。
図中の（ａ）は差し込み前の状態を示し、（ｂ）及び（ｃ）は差し込み途中の状態を示し、（ｄ）は差し込み後の状態を示す。案内面７１、７２は、工具６１が係合を解除する位置へ到達するまでに、端面６２の各々に接触すると共に、少なくとも一方が端面６２に対して面接触する又は幅方向に沿って線接触するように設定されている。図中（ｂ）において、工具６１の係合解除位置を二点鎖線で示す。The side closer to the electric wire insertion hole 24 is the guide surface 71, and the side far from the electric wire insertion hole 24 is the guide surface 72. The angle formed by the guide surfaces 71 and 72 is the same as the taper angle of the end surface 62 of the tool 61. Both of the guide surfaces 71 and 72 are inclined toward the front side in the depth direction toward the side away from the ferrule terminal 17.
In the figure, (a) shows the state before insertion, (b) and (c) show the state during insertion, and (d) shows the state after insertion. The guide surfaces 71 and 72 are in contact with each of the end surfaces 62 and at least one of them is in surface contact with the end surface 62 or in line contact along the width direction by the time the tool 61 reaches the disengagement position. It is set to do. In the figure (b), the disengagement position of the tool 61 is indicated by a chain double-dashed line.

したがって、工具６１のテーパ角度、刃先の幅寸法、端面６２の長さ、さらに板ばね３４の位置等を考慮し、案内面７１、７２の離隔距離、案内面７１、７２同士がなす角度等が決定される。ここでは、端面６２の夫々が案内面７１、７２に対向し、略平行になるように工具６１を差し込んでいるので、差し込み途中では端面６２が案内面７１、７２の何れにも接触することがない。しかし、係合を解除可能な位置まで差し込まれると、一方の端面６２が案内面７１に面接触し、他方の端面６２の根本側が案内面７２に線接触する。
案内面７１、７２の最も広い離隔距離は、工具６１における刃先の幅寸法と同等であるか、それ以下に設定している。Therefore, in consideration of the taper angle of the tool 61, the width dimension of the cutting edge, the length of the end surface 62, the position of the leaf spring 34, etc., the separation distance between the guide surfaces 71 and 72, the angle formed by the guide surfaces 71 and 72, etc. It is determined. Here, since the tool 61 is inserted so that the end faces 62 face the guide surfaces 71 and 72 and are substantially parallel to each other, the end face 62 may come into contact with any of the guide surfaces 71 and 72 during the insertion. Absent. However, when it is inserted to a position where the engagement can be disengaged, one end surface 62 comes into surface contact with the guide surface 71, and the root side of the other end surface 62 comes into line contact with the guide surface 72.
The widest separation distance between the guide surfaces 71 and 72 is set to be equal to or less than the width dimension of the cutting edge of the tool 61.

《作用》
次に実施形態の主要な作用について説明する。
マイナスドライバは刃先が一文字状であるため、工具差込穴２５に差し込むときの軸周りの角度によっては、板ばね３４に対して刃先の全体ではなく端部だけが接触し、板ばね３４に過剰な力が加わる可能性がある。板ばね３４に過剰な力が加わることを抑制するには、板ばね３４に対する工具６１の当たり方を、点接触ではなく、線接触にする必要がある。
そこで、工具６１の軸周りの角度を案内できるように、工具差込穴２５の配置、寸法、形状を設定している。すなわち、工具６１を差し込んだときに、案内面７１、７２は、工具６１が係合を解除する位置へ到達するまでに、端面６２の各々に接触すると共に、少なくとも一方が端面６２に対して面接触する又は幅方向に沿って線接触するように設定されている。《Action》
Next, the main operation of the embodiment will be described.
Since the cutting edge of a flat-blade screwdriver has a single letter shape, depending on the angle around the axis when inserting it into the tool insertion hole 25, only the end of the cutting edge comes into contact with the leaf spring 34, not the entire cutting edge, and the leaf spring 34 is excessive. There is a possibility that a strong force will be applied. In order to prevent an excessive force from being applied to the leaf spring 34, it is necessary that the tool 61 hits the leaf spring 34 in a line contact instead of a point contact.
Therefore, the arrangement, dimensions, and shape of the tool insertion hole 25 are set so that the angle around the axis of the tool 61 can be guided. That is, when the tool 61 is inserted, the guide surfaces 71 and 72 come into contact with each of the end faces 62 and at least one of them faces the end face 62 by the time the tool 61 reaches the position where the tool 61 disengages. It is set to make contact or make line contact along the width direction.

したがって、工具６１が差し込まれると、案内面７１、７２に沿って工具６１の軸周りの角度が案内され、係合を解除する位置へ到達したときには、工具６１の端面６２が工具差込穴２５の案内面７１、７２とが面接触又は線接触する。これにより、工具６１の先端のうち、幅方向の全体が板ばね３４に接触するようになるので、板ばね３４に過剰な力が加わることを抑制できる。したがって、板ばね３４の板面を傷付けたり、塑性変形を生じさせたりしてしまうことを抑制できる。
案内面７１、７２同士がなす角度は、工具６１における端面６２のテーパ角度と同一である。これにより、工具６１が係合を解除する位置まで差し込まれたときに、工具６１が一対の案内面７１、７２にぴったり嵌り合い、工具６１のがたつきを抑制することができる。このとき、作業者が工具６１から手を放しても、工具６１が倒れたり工具差込穴２５から抜け落ちたりすることもない。Therefore, when the tool 61 is inserted, the angle around the axis of the tool 61 is guided along the guide surfaces 71 and 72, and when the tool 61 reaches the disengagement position, the end surface 62 of the tool 61 is inserted into the tool insertion hole 25. The guide surfaces 71 and 72 of the above are in surface contact or line contact. As a result, the entire tip of the tool 61 in the width direction comes into contact with the leaf spring 34, so that it is possible to prevent an excessive force from being applied to the leaf spring 34. Therefore, it is possible to prevent the leaf surface of the leaf spring 34 from being damaged or causing plastic deformation.
The angle formed by the guide surfaces 71 and 72 is the same as the taper angle of the end surface 62 of the tool 61. As a result, when the tool 61 is inserted to a position where it is disengaged, the tool 61 fits snugly against the pair of guide surfaces 71 and 72, and rattling of the tool 61 can be suppressed. At this time, even if the operator releases the tool 61, the tool 61 does not fall or fall out of the tool insertion hole 25.

図９は、工具を差し込むときの様子を示した図（非平行）であり、工具の先端を工具差込穴の案内面に対して、非平行となるように挿入した場合を示している。
図中の（ａ）は差し込み前の状態を示し、（ｂ）及び（ｃ）は差し込み途中の状態を示し、（ｄ）は差し込み後の状態を示す。ここでは、端面６２の夫々が、案内面７１、７２と非平行になるように工具６１を差し込んでいるので、差し込み途中で端面６２が案内面７１、７２に接触し、奥に差し込むほど工具６１に捩じる力が作用し、自然と軸周りの角度変化が促される。すなわち、工具６１の差し込みが開始された時点で、端面６２の夫々が案内面７１、７２と非平行であるとしても、工具６１の差し込みが進むほど、端面６２の夫々が案内面７１、７２に対向する向きへと軸周りの角度が変化するように案内され、矯正される。FIG. 9 is a view (non-parallel) showing a state when the tool is inserted, and shows a case where the tip of the tool is inserted so as to be non-parallel to the guide surface of the tool insertion hole.
In the figure, (a) shows the state before insertion, (b) and (c) show the state during insertion, and (d) shows the state after insertion. Here, since the tool 61 is inserted so that each of the end faces 62 is non-parallel to the guide surfaces 71 and 72, the end face 62 comes into contact with the guide surfaces 71 and 72 during the insertion, and the tool 61 is inserted deeper. A twisting force acts on it, which naturally promotes an angle change around the axis. That is, even if the end faces 62 are not parallel to the guide surfaces 71 and 72 at the time when the tool 61 is inserted, the end faces 62 are brought into the guide surfaces 71 and 72 as the tool 61 is inserted. It is guided and corrected so that the angle around the axis changes in the opposite direction.

そして、係合を解除可能な位置まで差し込まれると、一方の端面６２が案内面７１に面接触し、他方の端面６２の根本側が案内面７２に線接触する。このとき、工具６１の先端のうち、幅方向の全体が板ばね３４に接触するようになるので、板ばね３４に過剰な力が加わることを抑制できる。
また、案内面７１、７２の最も広い離隔距離は、工具６１における刃先の幅寸法と同等であるか、それ以下に設定している。したがって、案内面７１、７２に対して、端面６２の幅方向が略直交するような向きでは、工具６１の差し込みを阻止できる。これにより、工具６１の差し込みには、軸周りの角度に許容範囲があることを作業者に知覚させ、差し込み過程における軸周りの角度変化をいっそう容易に促すことができる。Then, when it is inserted to a position where the engagement can be disengaged, one end surface 62 comes into surface contact with the guide surface 71, and the root side of the other end surface 62 makes line contact with the guide surface 72. At this time, since the entire tip of the tool 61 in the width direction comes into contact with the leaf spring 34, it is possible to prevent an excessive force from being applied to the leaf spring 34.
Further, the widest separation distance between the guide surfaces 71 and 72 is set to be equal to or less than the width dimension of the cutting edge of the tool 61. Therefore, the insertion of the tool 61 can be prevented in a direction in which the width direction of the end surface 62 is substantially orthogonal to the guide surfaces 71 and 72. As a result, it is possible to make the operator perceive that the angle around the axis has an allowable range in the insertion of the tool 61, and to more easily promote the change in the angle around the axis in the insertion process.

《変形例》
上記の実施形態では、案内面７１、７２同士がなす角度を、工具６１における端面６２のテーパ角度と同一にしているが、これに限定されるものではない。案内面７１、７２同士がなす角度を、端面６２のテーパ角度よりも僅かに大きくすれば、工具６１を差し込んだときに、僅かな遊びを確保することができる。
上記の実施形態では、リード線１６にフェルール端子１７を圧着した場合について説明したが、これに限定されるものではなく、単線であれ、より線であれ、裸線のまま使用してもよい。<< Modification example >>
In the above embodiment, the angle formed by the guide surfaces 71 and 72 is the same as the taper angle of the end surface 62 of the tool 61, but the present invention is not limited to this. If the angle formed by the guide surfaces 71 and 72 is slightly larger than the taper angle of the end surface 62, a slight amount of play can be secured when the tool 61 is inserted.
In the above embodiment, the case where the ferrule terminal 17 is crimped to the lead wire 16 has been described, but the present invention is not limited to this, and a single wire, a stranded wire, or a bare wire may be used as it is.

上記の実施形態では、ａ接点端子及びｂ接点端子を組み合わせたｃ接点のリレーについて説明したが、これに限定されるものではなく、ａ接点のリレーやｂ接点のリレーにも適用できる。また、４極の接点を有するリレーについて説明したが、これに限定されるものではなく、１極、２極、又は３極のリレーにも適用できる。さらに、リレーに限定されるものではなく、タイマーにも適用できる。
上記の実施形態では、リレーやタイマー等を外部回路に接続するためのターミナルソケットについて説明したが、これに限定されるものではない。要は、ハウジング１５に差し込まれたフェルール端子１７を保持可能なスプリング式の端子構造であれば、他の如何なる電気機器や付属装置にも適用可能である。In the above embodiment, the c-contact relay in which the a-contact terminal and the b-contact terminal are combined has been described, but the present invention is not limited to this, and the present invention can be applied to an a-contact relay and a b-contact relay. Further, although the relay having a 4-pole contact has been described, the present invention is not limited to this, and the relay can be applied to a 1-pole, 2-pole, or 3-pole relay. Furthermore, it is not limited to relays, but can be applied to timers.
In the above embodiment, the terminal socket for connecting a relay, a timer, or the like to an external circuit has been described, but the present invention is not limited to this. In short, any other electric device or accessory device can be applied as long as it has a spring-type terminal structure capable of holding the ferrule terminal 17 inserted into the housing 15.

以上、限られた数の実施形態を参照しながら説明したが、権利範囲はそれらに限定されるものではなく、上記の開示に基づく実施形態の改変は、当業者にとって自明のことである。 Although the above description has been made with reference to a limited number of embodiments, the scope of rights is not limited thereto, and modifications of the embodiments based on the above disclosure are obvious to those skilled in the art.

１１…接続端子台、１２…一次側端子部、１３…リレー端子部、１４…二次側端子部、１５…ハウジング、１６…リード線、１７…フェルール端子、１８…カラー部、１８ａ…テーパ面、１９…端子部、１９ａ…先端、２１…電線差込穴、２２…工具差込穴、２３…プラグ差込口、２４…電線差込穴、２５…工具差込穴、３０…角度、３２…スプリング金具、３３…押付面、３４…板ばね、３５…中継導電板、４３…大径部、４４…当接部、４５…小径部、４６…中間ベース、４７…底面、５１…自由端側区間、５１ａ…先端、５２…固定端側区間、５３…第一の曲げ区間、５４…第二の曲げ区間、５５…工具接触区間、５６…端子進路、６１…工具、６２…端面、７１…案内面、７２…案内面 11 ... Connection terminal block, 12 ... Primary side terminal part, 13 ... Relay terminal part, 14 ... Secondary side terminal part, 15 ... Housing, 16 ... Lead wire, 17 ... Ferrule terminal, 18 ... Collar part, 18a ... Tapered surface , 19 ... Terminal part, 19a ... Tip, 21 ... Electric wire insertion hole, 22 ... Tool insertion hole, 23 ... Plug insertion port, 24 ... Electric wire insertion hole, 25 ... Tool insertion hole, 30 ... Angle, 32 ... Spring metal fittings, 33 ... Pressing surface, 34 ... Leaf spring, 35 ... Relay conductive plate, 43 ... Large diameter part, 44 ... Contact part, 45 ... Small diameter part, 46 ... Intermediate base, 47 ... Bottom surface, 51 ... Free end Side section, 51a ... tip, 52 ... fixed end side section, 53 ... first bending section, 54 ... second bending section, 55 ... tool contact section, 56 ... terminal path, 61 ... tool, 62 ... end face, 71 ... guide surface, 72 ... guide surface

Claims (5)

ハウジングに形成された電線差込穴と、
前記電線差込穴と並んで前記ハウジングに形成された工具差込穴と、
前記ハウジングの内部で前記工具差込穴の奥側から前記電線差込穴の奥側へと延び、前記電線差込穴に電線が差し込まれると先端が前記電線に係合して前記電線の引き抜き方向の変位を抑制し、前記工具差込穴に工具が差し込まれると前記工具の先端に押されて前記係合が解除される板ばねと、を備え、
前記工具の先端側は、背中合わせとなる二つの端面が先端に向かうほど接近することで厚みが小さくなるように形成されており、
前記工具差込穴は、互いが前記板ばねの幅方向と平行な状態で対向し、奥側に向かうほど離隔距離が狭くなる一対の案内面を備え、
一対の前記案内面は、前記工具が前記係合を解除する位置へ到達するまでに、前記端面の各々に接触すると共に、少なくとも一方が前記端面に対して面接触する又は幅方向に沿って線接触するように設定され、
一対の前記案内面の双方は、前記工具差込穴の手前側になるほど前記電線差込穴から遠ざかる側に傾斜していることを特徴とする接続端子台。 The wire insertion hole formed in the housing and
A tool insertion hole formed in the housing along with the electric wire insertion hole,
Inside the housing, it extends from the back side of the tool insertion hole to the back side of the electric wire insertion hole, and when the electric wire is inserted into the electric wire insertion hole, the tip engages with the electric wire and the electric wire is pulled out. A leaf spring that suppresses displacement in the direction and is pushed by the tip of the tool when the tool is inserted into the tool insertion hole to release the engagement.
The tip side of the tool is formed so that the thickness becomes smaller as the two back-to-back end faces approach each other toward the tip.
The tool insertion holes are provided with a pair of guide surfaces that face each other in a state parallel to the width direction of the leaf spring and the separation distance becomes narrower toward the back side.
The pair of guide surfaces are in contact with each of the end faces and at least one is in surface contact with the end faces or is lined along the width direction by the time the tool reaches the disengagement position. Set to touch,
A connection terminal block characterized in that both of the pair of guide surfaces are inclined toward the front side of the tool insertion hole toward the side away from the electric wire insertion hole . 一対の前記案内面は、前記工具の差し込みが開始された時点で、前記端面が前記案内面に対向しないとしても、前記工具の差し込みが進むほど、前記端面が前記案内面に対向する向きへと軸周りの角度が変化するように案内することを特徴とする請求項１に記載の接続端子台。 Even if the end faces of the pair of guide surfaces do not face the guide surface at the time when the insertion of the tool is started, the more the tool is inserted, the more the end faces face the guide surface. The connection terminal block according to claim 1, wherein the connection terminal block is guided so that the angle around the axis changes. 前記板ばねは、
前記ハウジングの内部で前記電線が通る位置を電線進路とし、先端が差し込み方向の奥側及び前記電線進路に向かって突出し、板面が前記電線進路と交差するように配置された直線状の自由端側区間と、
前記ハウジングに固定され、前記電線進路と平行に延びる直線状の固定端側区間と、
前記自由端側区間と前記固定端側区間との間に介在し、前記差し込み方向の手前側から見て凸となる側に曲げられた第一の曲げ区間と、を備え、
前記工具が差し込まれると、前記自由端側区間に前記工具の先端が当接し、前記自由端側区間を押し下げることにより、前記板ばねを弾性変形させ、前記自由端側区間の先端と前記電線との前記係合が解除されることを特徴とする請求項１又は２に記載の接続端子台。The leaf spring
A straight free end is arranged so that the position where the electric wire passes inside the housing is the electric wire path, the tip protrudes toward the back side in the insertion direction and the electric wire path, and the plate surface intersects the electric wire path. Side section and
A linear fixed end side section fixed to the housing and extending parallel to the electric wire course,
It is provided with a first bending section that is interposed between the free end side section and the fixed end side section and is bent to a side that is convex when viewed from the front side in the insertion direction.
When the tool is inserted, the tip of the tool comes into contact with the free end side section, and by pushing down the free end side section, the leaf spring is elastically deformed, and the tip of the free end side section and the electric wire The connection terminal block according to claim 1 or 2, wherein the engagement is disengaged. 前記板ばねは、
前記自由端側区間と前記第一の曲げ区間との間に介在し、前記差し込み方向の手前側、又は前記電線進路から見て凹となる側に曲げられた第二の曲げ区間と、
前記第一の曲げ区間と前記第二の曲げ区間との間に介在する直線状の工具接触区間と、を備え、
前記工具が差し込まれると、前記工具接触区間に一方の前記端面が接触し、前記工具接触区間を前記板ばねの固定端側へと押しやることにより、前記板ばねを弾性変形させ、前記自由端側区間の先端と前記電線との前記係合が解除されることを特徴とする請求項３に記載の接続端子台。The leaf spring
A second bending section that is interposed between the free end side section and the first bending section and is bent toward the front side in the insertion direction or a side that is concave when viewed from the wire path.
A linear tool contact section interposed between the first bending section and the second bending section is provided.
When the tool is inserted, one of the end faces comes into contact with the tool contact section, and the tool contact section is pushed toward the fixed end side of the leaf spring to elastically deform the leaf spring and cause the free end side. The connection terminal block according to claim 3, wherein the engagement between the tip of the section and the electric wire is released. 請求項１〜４の何れか一項に記載の接続端子台を備えた電気機器。 An electric device provided with the connection terminal block according to any one of claims 1 to 4.
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