JP2007157525A - Multipoint contact type electrical connection terminal - Google Patents

Multipoint contact type electrical connection terminal Download PDF

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JP2007157525A
JP2007157525A JP2005351960A JP2005351960A JP2007157525A JP 2007157525 A JP2007157525 A JP 2007157525A JP 2005351960 A JP2005351960 A JP 2005351960A JP 2005351960 A JP2005351960 A JP 2005351960A JP 2007157525 A JP2007157525 A JP 2007157525A
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contact
spring
male terminal
electrical connection
connection terminal
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Taichi Oka
太一 岡
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Hitachi Cable Ltd
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Hitachi Cable Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a multipoint contact type electrical connection terminal in which a male terminal is easily inserted, an axial center is hardly shifted, which is easily manufactured by attaining a large tolerance zone, and at a reduced manufacturing cost. <P>SOLUTION: This multipoint contact type electrical connection terminal is provided with: a bar-like male terminal 2; a female terminal 5 having an insertion hole 3 in which the male terminal 2 is inserted and a storing space 4 in succession with this; and a contact spring member 7 incorporated in the storing space 4 and having a plurality of spring pieces 6 in contact with an outer circumferential surface of the male terminal 2. The spring pieces 6 of the contact spring member 7 are cantilevered spring structures extended from the insertion hole 3 to the deep side of the storing space 4 and formed in the tapered shape wherein inner circumferential surfaces of the spring pieces 6 and the outer circumferential surface of the male terminal 2 are gradually diametrically contracted in an insertion direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、多点接触型電気接続端子に関し、特に大電流を必要とする装置に適した多点接触型電気接続端子に関するものである。   The present invention relates to a multipoint contact type electrical connection terminal, and more particularly to a multipoint contact type electrical connection terminal suitable for a device requiring a large current.

近年、有害ガスの排出を低減でき、大幅な燃費低減効果のあるハイブリッド電気自動車（Hybrid Electric Vehicle、以下ＨＥＶという。）が注目されている。このＨＥＶにおいては、これを駆動するモータとインバータとの間の接続に電気接続端子（コネクタ）が使われており、この電気接続端子にはＨＥＶのシステムによっては１００Ａ以上の大電流が通電される。   In recent years, attention has been focused on hybrid electric vehicles (hereinafter referred to as HEVs) that can reduce the emission of harmful gases and have a significant fuel consumption reduction effect. In this HEV, an electrical connection terminal (connector) is used for connection between the motor driving the inverter and the inverter, and a large current of 100 A or more is applied to the electrical connection terminal depending on the HEV system. .

電気接続端子においては、大電流を通電する場合、できるだけ多くの接触点を設けることで接触抵抗を低減でき、導体の発熱を低減できるため、多点接点構造（多点接触型）の電気接続端子が用いられる（例えば、特許文献１参照）。図７は従来の多点接触型電気接続端子の雌端子を示す断面斜視図、図８は雌端子と雄端子の嵌合状態を示す断面斜視図である。   For electrical connection terminals, when energizing a large current, the contact resistance can be reduced by providing as many contact points as possible, and the heat generation of the conductor can be reduced. Therefore, the electrical connection terminal has a multipoint contact structure (multipoint contact type). Is used (see, for example, Patent Document 1). FIG. 7 is a cross-sectional perspective view showing a female terminal of a conventional multipoint contact type electrical connection terminal, and FIG. 8 is a cross-sectional perspective view showing a fitting state of the female terminal and the male terminal.

これらの図において、１Ａは多点接触型電気接続端子であり、この電気接続端子は、棒状の雄端子２と、この雄端子２が挿入される挿入口３及びこれと連続する収容空間４を有する雌端子５と、その収容空間４内に組み込まれ、上記雄端子２の外周面に接触する複数のバネ片１６を有する接触バネ部材１７とを備えている。雌端子２は、挿入口３及び収容空間４を形成した雌端子通電部８と、この雌端子通電部８の後端に設けられた機器側接続部９とを有している。   In these drawings, reference numeral 1A denotes a multipoint contact type electrical connection terminal. The electrical connection terminal includes a rod-shaped male terminal 2, an insertion port 3 into which the male terminal 2 is inserted, and an accommodating space 4 continuous therewith. And a contact spring member 17 having a plurality of spring pieces 16 which are incorporated in the housing space 4 and come into contact with the outer peripheral surface of the male terminal 2. The female terminal 2 has a female terminal energizing portion 8 in which the insertion port 3 and the accommodation space 4 are formed, and a device side connecting portion 9 provided at the rear end of the female terminal energizing portion 8.

上記接触バネ部材１７は、円筒状で長手方向（軸方向）の中央部が鼓状に縮径されており、長手方向の両端部に雌端子通電部８における収容空間４の内周面４ａに接触する接点部１５を有する両持ちバネ構造とされている。また、接触バネ部材１７には、長手方向に長いスリット１８を両端部を除く周面に適宜間隔で設けることにより、バネ性（弾発性）を有する内側に湾曲した複数のバネ片１６が形成されている。   The contact spring member 17 is cylindrical and has a central portion in the longitudinal direction (axial direction) reduced in a drum shape. The contact spring member 17 is formed on the inner peripheral surface 4a of the accommodating space 4 in the female terminal energizing portion 8 at both ends in the longitudinal direction. A double-supported spring structure having a contact portion 15 in contact therewith is employed. Further, the contact spring member 17 is formed with a plurality of spring pieces 16 curved inward and having spring properties (elasticity) by providing slits 18 that are long in the longitudinal direction at appropriate intervals on the peripheral surface excluding both ends. Has been.

特許３４２４７９６号公報Japanese Patent No. 3424796

このように構成された従来の多点接触型電気接続端子１Ａに使用されている両持ちバネ構造の接触バネ部材１７においては、図６に示すように、雄端子２を挿入した際の変位に対するバネの接触力が大きい。そのため、接触力を制御するために厳しい製造公差が要求されることになり、加工ないし製造が難しく、加工費ないし製造コストが多くかかるという問題がある。   In the contact spring member 17 having a doubly-supported spring structure used in the conventional multi-point contact type electrical connection terminal 1A configured as described above, as shown in FIG. The contact force of the spring is large. For this reason, strict manufacturing tolerances are required to control the contact force, so that processing or manufacturing is difficult, and processing costs or manufacturing costs are high.

また、雄端子２を挿入する際に軸心ずれ（中心軸のずれ）が生じ易く、軸心ずれが生じると、円周上での接触抵抗に偏りが生じてしまうため、軸心ずれが生じないように厳しい公差管理が必要となる。この対策としては、接触力を大きくし、偏りが生じたとしても充分な接触力が得られる設計をする必要があると共に、接触バネ部材１７を固定する雌端子通電部８とのガタを最小限にするといった対策が必要となる。更に、接触力を大きくすると、雄端子２を雌端子５に挿入する際の力が大きくなって雄端子２を挿入しにくくなり、また、上記ガタを制御するために公差を厳しくする必要が生じるため、加工費ないし製造コストの増大を招いてしまう。   Further, when the male terminal 2 is inserted, an axial misalignment (center axis misalignment) is likely to occur. If the axial misalignment occurs, the contact resistance on the circumference is biased, resulting in an axial misalignment. Strict tolerance management is necessary so that there is no such thing. As a countermeasure, it is necessary to increase the contact force so that a sufficient contact force can be obtained even if a bias occurs, and the backlash with the female terminal energizing portion 8 that fixes the contact spring member 17 is minimized. It is necessary to take measures such as Further, when the contact force is increased, the force when the male terminal 2 is inserted into the female terminal 5 is increased, making it difficult to insert the male terminal 2, and it is necessary to tighten tolerances in order to control the play. Therefore, the processing cost or the manufacturing cost is increased.

本発明は、上述した従来の技術が有する課題を解消すべくなされたものであり、雄端子を挿入する際に挿入し易く、軸心ずれが生じにくく、公差範囲を大きくとれて製造し易く、製造コストの低減が図れる多点接触型電気接続端子を提供することを目的とする。   The present invention has been made to solve the above-described problems of the prior art, and is easy to insert when inserting the male terminal, is not prone to axial misalignment, is easy to manufacture with a large tolerance range, An object of the present invention is to provide a multipoint contact type electrical connection terminal capable of reducing the manufacturing cost.

本発明のうち、請求項１に係る発明は、棒状の雄端子と、この雄端子が挿入される挿入口及びこれと連続する収容空間を有する雌端子と、その収容空間内に組み込まれ、上記雄端子の外周面に接触する複数のバネ片を有する接触バネ部材とを備えた多点接触型電気接続端子であって、上記接触バネ部材のバネ片は挿入口側から収容空間奥側に向って延出された片持ちバネ構造であり、バネ片の内周面及び上記雄端子の外周面が挿入方向に漸次縮径したテーパー状に形成されていることを特徴とする。   Among the present inventions, the invention according to claim 1 is incorporated in the housing space, the rod-shaped male terminal, the female terminal having the insertion slot into which the male terminal is inserted, and the housing space continuous therewith, A contact spring member having a plurality of spring pieces in contact with the outer peripheral surface of the male terminal, wherein the spring pieces of the contact spring member are directed from the insertion port side toward the back of the housing space. The cantilever spring structure is extended, and the inner peripheral surface of the spring piece and the outer peripheral surface of the male terminal are formed in a tapered shape that is gradually reduced in diameter in the insertion direction.

請求項２に係る発明は、請求項１に記載の多点接触型電気接続端子において、上記接触バネ部材が、上記収容空間に嵌合された筒状の基部と、この基部の挿入口側端部において内側に断面Ｕ字状に折り返された折り返し部と、この折り返し部から収容空間奥側に延出されると共に周方向に複数に分割されたバネ片とを有していることを特徴とする。   The invention according to claim 2 is the multipoint contact electrical connection terminal according to claim 1, wherein the contact spring member has a cylindrical base portion fitted in the housing space, and an insertion port side end of the base portion. And a spring piece that extends from the folded portion to the back side of the housing space and is divided into a plurality of portions in the circumferential direction. .

請求項３に係る発明は、請求項１に記載の多点接触型電気接続端子において、上記バネ片及び雄端子のテーパー状の傾きが嵌合時に一致するように形成されていることを特徴とする。   The invention according to claim 3 is the multipoint contact type electrical connection terminal according to claim 1, wherein the tapered inclination of the spring piece and the male terminal is formed so as to coincide with each other when fitted. To do.

請求項４に係る発明は、請求項１に記載の多点接触型電気接続端子において、上記雄端子の先端部には絶縁キャップが設けられていることを特徴とする。   The invention according to claim 4 is the multipoint contact electrical connection terminal according to claim 1, characterized in that an insulating cap is provided at the tip of the male terminal.

請求項５に係る発明は、請求項１に記載の多点接触型電気接続端子において、上記バネ片には雄端子の外周面に接触する複数の凸部が設けられていることを特徴とする。   The invention according to claim 5 is the multipoint contact electrical connection terminal according to claim 1, wherein the spring piece is provided with a plurality of convex portions that contact the outer peripheral surface of the male terminal. .

請求項１に係る発明によれば、棒状の雄端子と、この雄端子が挿入される挿入口及びこれと連続する収容空間を有する雌端子と、その収容空間内に組み込まれ、上記雄端子の外周面に接触する複数のバネ片を有する接触バネ部材とを備えた多点接触型電気接続端子であって、上記接触バネ部材のバネ片は挿入口側から収容空間奥側に向って延出された片持ちバネ構造であり、バネ片の内周面及び上記雄端子の外周面が挿入方向に漸次縮径したテーパー状に形成されているため、雄端子を挿入する際に挿入し易く、両端子の軸心が挿入と同時に一致し、軸心ずれが生じにくく、公差範囲を大きくとれて製造し易く、製造コストの低減が図れる。   According to the first aspect of the present invention, the rod-shaped male terminal, the female terminal having the insertion space into which the male terminal is inserted, and the accommodation space continuous therewith, are incorporated into the accommodation space. A contact spring member having a plurality of spring pieces in contact with the outer peripheral surface, wherein the spring piece of the contact spring member extends from the insertion port side toward the back side of the accommodation space. It is a cantilever spring structure, and since the inner peripheral surface of the spring piece and the outer peripheral surface of the male terminal are formed in a tapered shape with a gradually reduced diameter in the insertion direction, it is easy to insert when inserting the male terminal, The axial centers of both terminals coincide with each other at the time of insertion, so that the axial misalignment is unlikely to occur.

請求項２に係る発明によれば、上記接触バネ部材が、上記収容空間に嵌合された筒状の基部と、この基部の挿入口側端部において内側に断面Ｕ字状に折り返された折り返し部と、この折り返し部から収容空間奥側に延出されると共に周方向に複数に分割されたバネ片とを有しているため、雄端子を挿入する際に挿入し易く、軸心ずれを生じにくく、公差範囲を大きくとれて製造し易く、製造コストの低減が図れる。   According to the second aspect of the present invention, the contact spring member includes a cylindrical base portion that is fitted in the accommodation space, and a folded portion that is folded inwardly into a U-shaped cross section at the insertion port side end portion of the base portion. And a spring piece that extends from the folded portion to the back side of the housing space and is divided into a plurality of portions in the circumferential direction. It is difficult to manufacture with a large tolerance range, and the manufacturing cost can be reduced.

請求項３に係る発明によれば、上記バネ片及び雄端子のテーパー状の傾きが嵌合時に一致するように形成されているため、端子同士の接触面積を多く確保でき、これにより接触抵抗が低減し、大電流通電時の発熱を低減することができる。   According to the invention which concerns on Claim 3, since it forms so that the taper-shaped inclination of the said spring piece and a male terminal may correspond at the time of a fitting, many contact areas of terminals can be ensured and, thereby, contact resistance is secured. It is possible to reduce heat generation when a large current is applied.

請求項４に係る発明によれば、上記雄端子の先端部には絶縁キャップが設けられているため、雄端子の先端部と接触バネ部材との部分的接触による通電を抑制できると共にバネ部のみでの通電を確保できる。   According to the invention of claim 4, since the insulating cap is provided at the tip of the male terminal, it is possible to suppress energization due to partial contact between the tip of the male terminal and the contact spring member, and only the spring part. Energization at can be secured.

請求項５に係る発明によれば、上記バネ片には雄端子の外周面に接触する複数の凸部が設けられているため、端子同士の安定した接触が得られる。   According to the invention which concerns on Claim 5, since the several convex part which contacts the outer peripheral surface of a male terminal is provided in the said spring piece, the stable contact of terminals is obtained.

以下に、本発明を実施するための最良の形態を添付図面に基いて詳述する。図１は本発明の実施の形態である多点接触型電気接続端子の構成を概略的に示す断面図、図２は図１の多点接触型電気接続端子の雌端子を示す断面斜視図、図３は雄端子を示す断面斜視図、図４は雌端子と雄端子の嵌合状態を示す断面斜視図である。   The best mode for carrying out the present invention will be described below in detail with reference to the accompanying drawings. 1 is a cross-sectional view schematically showing a configuration of a multipoint contact type electrical connection terminal according to an embodiment of the present invention, and FIG. 2 is a cross-sectional perspective view showing a female terminal of the multipoint contact type electrical connection terminal of FIG. FIG. 3 is a cross-sectional perspective view showing the male terminal, and FIG. 4 is a cross-sectional perspective view showing a fitting state of the female terminal and the male terminal.

これらの図において、１は大電流を必要とする装置に適した多点接触型電気接続端子であり、この電気接続端子１は、棒状の雄端子２と、この雄端子２が挿入される挿入口３及びこれと連続する収容空間４を有する雌端子５と、その収容空間４内に組み込まれ、上記雄端子２の外周面に接触する複数のバネ片６を有する接触バネ部材７とを備えている。上記接触バネ部材７のバネ片６は挿入口３側から収容空間４奥側に向って延出された片持ちバネ構造であり、バネ片６の内周面及び上記雄端子２の外周面が挿入方向に漸次縮径したテーパー状に形成されている。   In these drawings, reference numeral 1 denotes a multi-point contact type electrical connection terminal suitable for a device that requires a large current. The electrical connection terminal 1 includes a rod-shaped male terminal 2 and an insertion into which the male terminal 2 is inserted. A female terminal 5 having a mouth 3 and a housing space 4 continuous therewith, and a contact spring member 7 incorporated in the housing space 4 and having a plurality of spring pieces 6 contacting the outer peripheral surface of the male terminal 2 are provided. ing. The spring piece 6 of the contact spring member 7 has a cantilever spring structure extending from the insertion port 3 side toward the inner side of the accommodation space 4, and the inner peripheral surface of the spring piece 6 and the outer peripheral surface of the male terminal 2 are It is formed in a tapered shape with a gradually reduced diameter in the insertion direction.

上記雌端子５は、挿入口３及び収容空間４を形成した雌端子通電部８と、この雌端子通電部８の後端に設けられた機器側接続部９とを有している。上記雌端子５の外周は、図示しない絶縁部材で覆われている。上記収容空間４の奥部は閉じており、奥壁１０を有している。   The female terminal 5 has a female terminal energizing portion 8 in which the insertion port 3 and the accommodation space 4 are formed, and a device side connecting portion 9 provided at the rear end of the female terminal energizing portion 8. The outer periphery of the female terminal 5 is covered with an insulating member (not shown). The back portion of the housing space 4 is closed and has a back wall 10.

上記接触バネ部材７は、上記収容空間４に嵌合される筒状の基部７ａと、この基部７ａの挿入口３側端部において内側に断面Ｕ字状に折り返された折り返し部７ｂと、この折り返し部７ｂから収容空間４奥側に延出されると共に周方向に複数に分割されたバネ片６とを有している。周方向に隣接するバネ片６間には切れ目（スリット）１１が設けられ、各切れ目１１の幅を固定端側（図２の左側）から自由端側（図２の右側）に向って漸次大きくして各バネ片６の幅を固定端側から自由端側に向って漸次小さくすることにより、バネ片６が入口側から奥側に向って漸次縮径した裁頭円錐状に形成されている。接触バネ部材７の材質としては、導電性及び弾力性（バネ性）の優れた例えば銅合金などが好ましい。   The contact spring member 7 includes a cylindrical base portion 7a fitted in the accommodation space 4, a folded portion 7b folded inward in a U-shaped cross section at the insertion port 3 side end portion of the base portion 7a, The spring piece 6 extends from the folded portion 7b to the back side of the accommodating space 4 and is divided into a plurality of portions in the circumferential direction. Cuts (slits) 11 are provided between the spring pieces 6 adjacent in the circumferential direction, and the width of each cut 11 gradually increases from the fixed end side (left side in FIG. 2) toward the free end side (right side in FIG. 2). Then, by gradually reducing the width of each spring piece 6 from the fixed end side toward the free end side, the spring piece 6 is formed in a truncated cone shape that is gradually reduced in diameter from the inlet side toward the back side. . As a material of the contact spring member 7, for example, a copper alloy having excellent conductivity and elasticity (spring property) is preferable.

上記接触バネ部材７の基部７ａの外周面が雌端子通電部８における収容空間４の内周面４ａに嵌合することにより、接触バネ部材７をガタつかないように安定して取付固定することができる。接触バネ部材７が挿入口３から引き抜けないようにするために、挿入口３には接触バネ部材７が挿入口３の方向へ移動しないように規制する内向きのフランジ部１２が形成されていることが好ましい。   By fitting the outer peripheral surface of the base portion 7a of the contact spring member 7 to the inner peripheral surface 4a of the accommodating space 4 in the female terminal energizing portion 8, the contact spring member 7 can be stably mounted and fixed so as not to rattle. Can do. In order to prevent the contact spring member 7 from being pulled out of the insertion port 3, an inward flange portion 12 that restricts the contact spring member 7 from moving in the direction of the insertion port 3 is formed in the insertion port 3. Preferably it is.

上記バネ片６及び雄端子２のテーパー状の傾きは、図４に示すように嵌合時に一致するように形成されている。すなわち、バネ片６の傾き（傾斜角度）と雄端子２のテーパー部２ａの傾き（傾斜角度）は略同じに設定（設計）されており、バネ片６の変位による吸収作用により最終的嵌合時にそれぞれの傾きが一致する、更に詳しくは雄端子２のテーパー部２ａに対応して各バネ片６が雄端子２のテーパー部２ａと同じ角度に変位して全面接触で接触するように構成されている。   The tapered slopes of the spring piece 6 and the male terminal 2 are formed so as to coincide with each other as shown in FIG. That is, the inclination (inclination angle) of the spring piece 6 and the inclination (inclination angle) of the tapered portion 2a of the male terminal 2 are set (designed) to be substantially the same. In some cases, the respective inclinations coincide with each other. More specifically, each spring piece 6 is displaced at the same angle as the tapered portion 2a of the male terminal 2 in contact with the tapered portion 2a of the male terminal 2. ing.

上記雄端子２は、雌端子５に挿入されるテーパー部２ａと、このテーパー部２ａの後端部に設けられ、図示しないケーブル導体を接続するためのケーブル導体接続部２ｂとを有している。上記雄端子２の先端部には、該先端部の接触バネ部材７に対する部分的接触を防止すると共にバネ部（接触バネ部材）のみでの通電を確保できるために絶縁キャップ１３が設けられていることが好ましい。絶縁キャップ１３の形状としては、例えば円錐状、裁頭円錐状、凸面状等が好ましい。   The male terminal 2 has a tapered portion 2a inserted into the female terminal 5 and a cable conductor connecting portion 2b provided at the rear end portion of the tapered portion 2a for connecting a cable conductor (not shown). . An insulating cap 13 is provided at the distal end portion of the male terminal 2 to prevent partial contact of the distal end portion with the contact spring member 7 and to ensure energization only by the spring portion (contact spring member). It is preferable. As the shape of the insulating cap 13, for example, a conical shape, a truncated conical shape, a convex surface shape, or the like is preferable.

以上の構成からなる多点接触型電気接続端子１によれば、上記接触バネ部材７のバネ片６が挿入口３側から収容空間４奥側に向って延出された片持ちバネ構造であり、バネ片６の内周面及び上記雄端子２の外周面が挿入方向に漸次縮径したテーパー状に形成されているため、雄端子２を挿入する際に挿入し易く、両端子２，５の軸心が挿入と同時に一致し、軸心ずれが生じにくく、公差範囲を大きくとれて製造し易く、製造コストの低減が図れる。   According to the multi-point contact type electrical connection terminal 1 having the above configuration, the spring piece 6 of the contact spring member 7 has a cantilever spring structure extending from the insertion port 3 side toward the back side of the accommodation space 4. Since the inner peripheral surface of the spring piece 6 and the outer peripheral surface of the male terminal 2 are formed in a tapered shape with a gradually reduced diameter in the insertion direction, the male terminal 2 can be easily inserted when the both terminals 2 and 5 are inserted. The shaft centers coincide with each other at the time of insertion, so that the shaft center is not easily displaced, the tolerance range is large, and the manufacturing is easy, and the manufacturing cost can be reduced.

すなわち、雄端子２がテーパー状であり、雌端子５の接触バネ部材７のバネ片６もテーパー状であるため、例えば、紙コップを重ねた時にどちらも同じテーパー状であれば軸心が自動的に一致するのと同じ原理で、雄端子２の挿入時に自動的に芯出しが行われ、雄端子２の軸心と雌端子５の軸心を自動的に一致させることができる。したがって、円周上での接触抵抗に偏りが生じにくいため、公差管理が容易である。   That is, since the male terminal 2 is tapered and the spring piece 6 of the contact spring member 7 of the female terminal 5 is also tapered, for example, when both paper cups are stacked, the axis is automatic if both are tapered. The centering is automatically performed when the male terminal 2 is inserted according to the same principle as that of the matching, so that the axial center of the male terminal 2 and the axial center of the female terminal 5 can be automatically matched. Therefore, tolerance management is easy because the contact resistance on the circumference is less likely to be biased.

接触バネ部材７が片持ちバネとされているため、図６からも解るように、バネ設計領域におけるバネの接触力に対する変位量すなわち製造公差ｄｂを両持ちバネの製造公差ｄａに比して大きくすることができ、製造精度が許容され、加工ないし製造の容易化が図れると共に、加工費ないし製造コストの低減が図れる。   Since the contact spring member 7 is a cantilever spring, as can be seen from FIG. 6, the displacement amount with respect to the contact force of the spring in the spring design region, that is, the manufacturing tolerance db is larger than the manufacturing tolerance da of the double-supported spring. Therefore, manufacturing accuracy is allowed, processing and manufacturing can be facilitated, and processing costs and manufacturing costs can be reduced.

また、接触バネ部材７のバネ片６が片持ちバネ構造で、且つ長手方向にテーパー状になっているため、同じくテーパー状の雄端子２を挿入するときに、徐々に変位量が大きくなる。これにより、徐々に接触力がかかるため、両持ちバネ構造のものと異なり、雄端子２を挿入する場合に、容易に挿入することができ、しかも、引っ掛からずに円滑に挿入することができ、操作性の向上が図れる。   Further, since the spring piece 6 of the contact spring member 7 has a cantilever spring structure and is tapered in the longitudinal direction, the amount of displacement gradually increases when the similarly tapered male terminal 2 is inserted. As a result, since contact force is gradually applied, unlike the double-supported spring structure, when the male terminal 2 is inserted, it can be easily inserted, and can be smoothly inserted without being caught, The operability can be improved.

上記接触バネ部材７が、上記収容空間４に嵌合された筒状の基部７ａと、この基部７ａの挿入口３側端部において内側に断面Ｕ字状に折り返された折り返し部７ｂと、この折り返し部７ｂから収容空間４奥側に延出されると共に周方向に複数に分割されたバネ片６とを有しているため、雄端子２を挿入する際に挿入し易く、軸心ずれを生じにくく、公差範囲を大きくとれて製造し易く、製造コストの低減が図れる。   The contact spring member 7 includes a cylindrical base portion 7a fitted in the accommodation space 4, a folded portion 7b folded inward in a U-shaped cross section at the insertion port 3 side end portion of the base portion 7a, Since it has the spring piece 6 extended in the accommodation space 4 back | inner side from the folding | returning part 7b and divided | segmented into the circumferential direction, when inserting the male terminal 2, it is easy to insert and an axial center shift | offset | difference arises It is difficult to manufacture with a large tolerance range, and the manufacturing cost can be reduced.

特に、上記接触バネ部材７は、バネ片６の基端部（固定端側）を折り返し部７ｂを介して支持する筒状の基部７ａを有しているため、雌端子５の雌端子通電部８における収容空間４の内周面４ａに安定した状態に嵌合固定することができる。また、筒状の基部７ａがバネ片６の長さよりも長く形成されているため、バネ片６の自由端側が上記収容空間４の奥壁１０に接触するのを防止することができ、バネ片６の動きを阻害するおそれがなく、耐久性及び信頼性の向上が図れる。   In particular, the contact spring member 7 has a cylindrical base portion 7a that supports the base end portion (fixed end side) of the spring piece 6 via the folded portion 7b. 8 can be fitted and fixed in a stable state to the inner peripheral surface 4a of the housing space 4. Further, since the cylindrical base portion 7a is formed longer than the length of the spring piece 6, it is possible to prevent the free end side of the spring piece 6 from coming into contact with the back wall 10 of the housing space 4, and the spring piece. There is no possibility of obstructing the movement of 6, and durability and reliability can be improved.

上記バネ片６及び雄端子２のテーパー状の傾きが嵌合時に一致するように形成されているため、端子２，５同士の接触面積を多く確保でき、これにより接触抵抗が低減し、大電流通電時の発熱を低減することができる。また、上記雄端子２の先端部には絶縁キャップ１３が設けられているため、雄端子２の先端部と接触バネ部材７との部分的接触による通電を防止できると共にバネ部のみでの通電を確保できる。   Since the tapered slopes of the spring piece 6 and the male terminal 2 are formed so as to coincide with each other at the time of fitting, a large contact area between the terminals 2 and 5 can be secured, thereby reducing the contact resistance and the large current. Heat generation during energization can be reduced. Further, since the insulating cap 13 is provided at the distal end portion of the male terminal 2, it is possible to prevent energization due to partial contact between the distal end portion of the male terminal 2 and the contact spring member 7, and energization only by the spring portion. It can be secured.

図５は接触バネ部材のバネ片の変形例を示す斜視図である。すなわち、接触バネ部材７のバネ片６には雄端子２の外周面に接触する複数の凸部１４が設けられている。この接触バネ部材７を使用した多点接触型電気接続端子１によれば、上記バネ片６に雄端子２の外周面に接触する複数の凸部１４が設けられているため、端子２，５同士の安定した接触が得られる。   FIG. 5 is a perspective view showing a modification of the spring piece of the contact spring member. In other words, the spring piece 6 of the contact spring member 7 is provided with a plurality of convex portions 14 that contact the outer peripheral surface of the male terminal 2. According to the multipoint contact type electrical connection terminal 1 using the contact spring member 7, since the spring piece 6 is provided with a plurality of convex portions 14 that contact the outer peripheral surface of the male terminal 2, the terminals 2, 5 are provided. Stable contact between each other is obtained.

以上、本発明の実施の形態ないし実施例を図面により詳述してきたが、本発明は前記実施の形態ないし実施例に限定されるものではなく、本発明の要旨を逸脱しない範囲での種々の設計変更が可能である。   As mentioned above, although embodiment thru | or example of this invention has been explained in full detail with drawing, this invention is not limited to the said embodiment thru | or example, Various in the range which does not deviate from the summary of this invention. Design changes are possible.

本発明の実施の形態である多点接触型電気接続端子の構成を概略的に示す断面図である。It is sectional drawing which shows roughly the structure of the multipoint contact type | mold electrical connection terminal which is embodiment of this invention. 図１の多点接触型電気接続端子の雌端子を示す断面斜視図である。It is a cross-sectional perspective view which shows the female terminal of the multipoint contact type | mold electrical connection terminal of FIG. 雄端子を示す断面斜視図である。It is a cross-sectional perspective view which shows a male terminal. 雌端子と雄端子の嵌合状態を示す断面斜視図である。It is a cross-sectional perspective view which shows the fitting state of a female terminal and a male terminal. 接触バネ部材のバネ片の変形例を示す斜視図である。It is a perspective view which shows the modification of the spring piece of a contact spring member. （ａ）は両持ちバネと片持ちバネの特性を示すグラフ、（ｂ）は片持ちバネを示す概略的断面図、（ｃ）は両持ちバネを示す概略的断面図である。(A) is a graph showing the characteristics of a cantilever spring and a cantilever spring, (b) is a schematic sectional view showing the cantilever spring, and (c) is a schematic sectional view showing the cantilever spring. 従来の多点接触型電気接続端子の雌端子を示す断面斜視図である。It is a cross-sectional perspective view which shows the female terminal of the conventional multipoint contact type | mold electrical connection terminal. 雌端子と雄端子の嵌合状態を示す断面斜視図である。It is a cross-sectional perspective view which shows the fitting state of a female terminal and a male terminal.

符号の説明Explanation of symbols

１ 多点接触型電気接続端子
２ 雄端子
３ 挿入口
４ 収容空間
５ 雌端子
６ バネ片
７ 接触バネ部材
７ａ 基部
７ｂ 折り返し部
１３ 絶縁キャップ
１４ 凸部
DESCRIPTION OF SYMBOLS 1 Multipoint contact type electrical connection terminal 2 Male terminal 3 Insertion port 4 Accommodating space 5 Female terminal 6 Spring piece 7 Contact spring member 7a Base part 7b Folding part 13 Insulating cap 14 Convex part

Claims (5)

棒状の雄端子と、この雄端子が挿入される挿入口及びこれと連続する収容空間を有する雌端子と、その収容空間内に組み込まれ、上記雄端子の外周面に接触する複数のバネ片を有する接触バネ部材とを備えた多点接触型電気接続端子であって、上記接触バネ部材のバネ片は挿入口側から収容空間奥側に向って延出された片持ちバネ構造であり、バネ片の内周面及び上記雄端子の外周面が挿入方向に漸次縮径したテーパー状に形成されていることを特徴とする多点接触型電気接続端子。   A rod-shaped male terminal, an insertion port into which the male terminal is inserted and a female terminal having a housing space continuous therewith, and a plurality of spring pieces incorporated in the housing space and in contact with the outer peripheral surface of the male terminal A contact spring member having a multipoint contact type electrical connection terminal, wherein the spring piece of the contact spring member has a cantilever spring structure extending from the insertion port side toward the back side of the housing space, and a spring A multipoint contact type electrical connection terminal, wherein the inner peripheral surface of the piece and the outer peripheral surface of the male terminal are formed in a tapered shape with a diameter gradually reduced in the insertion direction. 上記接触バネ部材は、上記収容空間に嵌合された筒状の基部と、この基部の挿入口側端部において内側に断面Ｕ字状に折り返された折り返し部と、この折り返し部から収容空間奥側に延出されると共に周方向に複数に分割されたバネ片とを有していることを特徴とする請求項１に記載の多点接触型電気接続端子。   The contact spring member includes a cylindrical base that is fitted in the housing space, a folded portion that is folded inwardly in a U-shaped cross section at an insertion port side end of the base, and a back of the housing space from the folded portion. The multipoint contact type electrical connection terminal according to claim 1, further comprising a spring piece that extends to the side and is divided into a plurality of portions in the circumferential direction. 上記バネ片及び雄端子のテーパー状の傾きが嵌合時に一致するように形成されていることを特徴とする請求項１に記載の多点接触型電気接続端子。   2. The multipoint contact type electrical connection terminal according to claim 1, wherein the spring pieces and the male terminals are formed so that tapered inclinations coincide with each other when fitted. 上記雄端子の先端部には絶縁キャップが設けられていることを特徴とする請求項１に記載の多点接触型電気接続端子。   The multi-point contact electrical connection terminal according to claim 1, wherein an insulating cap is provided at a tip of the male terminal. 上記バネ片には雄端子の外周面に接触する複数の凸部が設けられていることを特徴とする請求項１に記載の多点接触型電気接続端子。   2. The multipoint contact type electrical connection terminal according to claim 1, wherein the spring piece is provided with a plurality of protrusions that contact the outer peripheral surface of the male terminal.
JP2005351960A 2005-12-06 2005-12-06 Multipoint contact type electrical connection terminal Pending JP2007157525A (en)

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WO2011065394A1 (en) * 2009-11-27 2011-06-03 パナソニック電工株式会社 Motor device, pump with the motor device, and liquid circulation device with the pump
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JP2014049200A (en) * 2012-08-29 2014-03-17 Hitachi Metals Ltd Connector, and wire harness
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JPWO2015012013A1 (en) * 2013-07-25 2017-03-02 ビー・エル・オートテック株式会社 Connector and tool changer using the same
KR101557282B1 (en) 2014-03-21 2015-10-06 주식회사 유라코퍼레이션 Connector
CN117791205A (en) * 2024-01-05 2024-03-29 惠州尼索科连接技术有限公司 Terminal structure

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