JP6732433B2

JP6732433B2 - Continuity inspection jig, continuity inspection device, and continuity inspection method

Info

Publication number: JP6732433B2
Application number: JP2015216733A
Authority: JP
Inventors: 良介井伊; 橋本　秀紀; 秀紀橋本; 壮亮中村; 志門鯵坂
Original assignee: Chuo University; Yazaki Corp
Current assignee: Chuo University; Yazaki Corp
Priority date: 2015-11-04
Filing date: 2015-11-04
Publication date: 2020-07-29
Anticipated expiration: 2035-11-04
Also published as: JP2017090089A

Description

本発明は、端子金具が端末に設けられた電線の導通検査に用いられる導通検査治具、導通検査装置、及び導通検査方法に関する。 TECHNICAL FIELD The present invention relates to a continuity inspection jig, a continuity inspection device, and a continuity inspection method used for the continuity inspection of an electric wire provided with a terminal fitting on a terminal.

車両内に配索されて各種電子機器等の接続に用いられるワイヤハーネスは、コネクタハウジングに収容される端子金具が端末に設けられた複数の電線を有している。そして、このようなワイヤハーネスに対して、電線の断線や端子の接続不良等を検出するための導通検査が行われる。 A wire harness, which is arranged in a vehicle and used for connecting various electronic devices and the like, has a plurality of electric wires in which terminal fittings accommodated in a connector housing are provided at terminals. Then, for such a wire harness, a continuity test is performed to detect a wire breakage, a terminal connection failure, or the like.

導通検査は、例えば、電線の両端末に設けられた端子金具に対をなす検査プローブを接触させて、これら検査プローブ間の導通を確認することにより行うものであるところ、この検査プローブを接触させることにより端子金具の変形や損傷が生じるおそれがあった。そして、このような端子金具の変形や損傷を抑制できる検査プローブの一例が、特許文献１に開示されている。 The continuity test is performed by, for example, contacting a pair of test probes with terminal fittings provided at both ends of the electric wire and checking the continuity between these test probes. As a result, the terminal fitting may be deformed or damaged. Patent Document 1 discloses an example of an inspection probe capable of suppressing such deformation and damage of the terminal fitting.

特許文献１に開示されている検査プローブは、検査器本体に取り付けられる管体と、この管体に突没自在に支持された可動ピンと、管体内に配置されかつ可動ピンを管体から突出させる方向に向けて押圧するコイルバネと、を有している。この検査プローブによれば、端子金具が可動ピンに押し付けられると、当該押し付けられる力に応じて可動ピンが管体内に押し込まれるので、端子金具の変形や損傷を抑制することができる。 The inspection probe disclosed in Patent Document 1 has a tube body attached to the body of the inspector, a movable pin supported by the tube body so as to be capable of projecting and retracting, and a movable pin disposed in the tube body and protruding from the tube body. And a coil spring that presses in a direction. According to this inspection probe, when the terminal fitting is pressed against the movable pin, the movable pin is pushed into the tube body according to the pressing force, so that the deformation and damage of the terminal fitting can be suppressed.

特開平９−４３２９８号公報JP, 9-43298, A

しかしながら、特許文献１に開示されているような可動ピンをコイルバネで押圧する構成の検査プローブは、繰り返し使用した場合においても可動ピンと端子金具とを確実に接触させるために、コイルバネによる可動ピンを押圧する力を、当該コイルバネの劣化（バネ力の低下等）などを考慮して、可動ピンと端子金具との間の導通を確保するために最低限必要な力より大きく設定することが求められ、そのため、端子金具の変形や損傷を抑制する点で改善の余地があった。 However, the inspection probe configured to press the movable pin with the coil spring as disclosed in Patent Document 1 presses the movable pin by the coil spring in order to surely bring the movable pin and the terminal fitting into contact with each other even when repeatedly used. In consideration of deterioration of the coil spring (decrease in spring force, etc.), it is necessary to set the force to be greater than the minimum required force to secure conduction between the movable pin and the terminal fitting. There was room for improvement in suppressing the deformation and damage of the terminal fittings.

本発明は、かかる問題を解決することを目的としている。即ち、本発明は、端子金具の変形や損傷をより効果的に抑制することができる導通検査治具、導通検査装置、及び導通検査方法を提供することを目的としている。 The present invention aims to solve such problems. That is, an object of the present invention is to provide a continuity inspection jig, a continuity inspection device, and a continuity inspection method that can more effectively suppress the deformation and damage of the terminal fitting.

上記目的を達成するために、本発明の導通検査治具は、導通検査対象の導通検査に用いられる導通検査治具であって、前記導通検査対象を保持する検査治具本体と、前記検査治具本体に支持されて、内部に液体が流される配管と、前記導通検査対象に対して接離可能な接触端を有するピン本体、及び、該ピン本体における前記接触端に対する他端側に設けられ、前記液体を受けて前記接触端を移動させて前記導通検査対象に接触させる、カップ形状に形成されたカップ部において円筒状の周壁部の一端を塞ぐ底壁に当たる液体受け部、を有し、前記検査治具本体に支持された導通ピンと、前記液体受け部における前記ピン本体側と、前記検査治具本体における前記導通検査対象の保持位置と、の間に配置されるとともに、前記接触端の前記導通検査対象に対する接離方向に貫通して前記ピン本体を内部に通す貫通孔が設けられて、前記導通検査対象に対する前記接触端の接離を案内するピンガイドと、を備え、前記ピンガイドは、前記検査治具本体から前記液体受け部に向かって延出した、前記カップ部における前記周壁部の外径よりも小さな外径を有する筒であり、前記導通ピンの前記導通検査対象に向かう移動を案内するとともに、前記液体受け部の側の開口端部に前記カップ部が当接したところで前記移動を規制するものであることを特徴とする。 In order to achieve the above object, a continuity inspection jig of the present invention is a continuity inspection jig used for continuity inspection of a continuity inspection target, which includes an inspection jig main body for holding the continuity inspection target and the inspection jig. A pipe which is supported by the tool body and through which a liquid flows, a pin body having a contact end capable of coming in and out of contact with the continuity inspection target, and the other end side of the pin body with respect to the contact end. A liquid receiving portion corresponding to a bottom wall closing one end of a cylindrical peripheral wall portion in a cup portion formed in a cup shape, the liquid receiving portion receiving the liquid and moving the contact end to contact the conduction inspection target, It is arranged between the conduction pin supported by the inspection jig main body, the pin main body side of the liquid receiving portion, and the holding position of the continuity inspection target in the inspection jig main body, and A pin guide which is provided with a through hole penetrating through the pin main body inside in the direction of contact and separation with respect to the continuity inspection target, and which guides contact and separation of the contact end with respect to the continuity test target. Is a cylinder that extends from the inspection jig body toward the liquid receiving portion and has an outer diameter smaller than the outer diameter of the peripheral wall portion of the cup portion , and faces the conduction inspection target of the conduction pin. It is characterized in that the movement is guided and the movement is regulated when the cup portion comes into contact with the opening end portion on the liquid receiving portion side.

本発明の導通検査治具によれば、液体受け部で配管の液体を受けることで導通ピンのピン本体における接触端を導通検査対象に接触させる。接触端の接触に液体を利用することで、毎回の導通検査において導通ピンと端子金具との間の導通を確保するために最低限必要な力で当該導通ピンを導通検査対象に接触させることができ、そのため、端子金具の変形や損傷をより効果的に抑制することができる。また、コイルバネのように劣化がないことから、常に一定の力で導通ピンを端子金具に接触させることができ、そのため、一定の検査品質を保つことができる。
また、本発明の導通検査治具によれば、ピンガイドでピン本体における接触端の接離を案内することで、このピン本体の変形等を抑制することができる。 According to the continuity inspection jig of the present invention, the contact end in the pin body of the conduction pin is brought into contact with the continuity inspection target by receiving the liquid in the pipe by the liquid receiving portion. By using a liquid for contacting the contact ends, it is possible to bring the conduction pin into contact with the conduction inspection target with the minimum force required to ensure conduction between the conduction pin and the terminal fitting in each conduction inspection. Therefore, the deformation and damage of the terminal fitting can be suppressed more effectively. Further, since there is no deterioration unlike the coil spring, the conductive pin can be always brought into contact with the terminal fitting with a constant force, and therefore a constant inspection quality can be maintained.
Further, according to the continuity inspection jig of the present invention, the pin guide guides contact and separation of the contact ends of the pin body, so that deformation of the pin body can be suppressed.

また、本発明の導通検査治具において、前記配管は、内部を流れる前記液体の向きが、前記液体受け部が前記接触端を前記導通検査対象に接触させるときの向きと、該向きとは逆向きと、で切換可能であり、前記配管に前記逆向きに前記液体が流されて前記液体受け部が前記液体に押されなくなると、前記ピン本体が前記導通検査対象から離間することは好適である。 Further, in the continuity inspection jig of the present invention, the direction of the liquid flowing inside the pipe is opposite to the direction when the liquid receiving portion brings the contact end into contact with the continuity inspection target. It is preferable that the pin body is separated from the continuity inspection target when the liquid is made to flow in the opposite direction to the pipe and the liquid receiving portion is not pushed by the liquid. is there.

この好適な導通検査治具によれば、ピン本体における接触端の導通検査対象からの離間も液体を介して行われることから、このような切換えのための構造を配管とは別に備える等といったことが不要となる。このように、この好適な導通検査治具は、その構造について簡単化が図られたものとなっている。 According to this preferable continuity inspection jig, since the contact end of the pin body is also separated from the continuity inspection target through the liquid, such a structure for switching is provided separately from the pipe. Is unnecessary. As described above, the structure of this preferable continuity inspection jig is simplified.

また、上記目的を達成するために、本発明の導通検査装置は、導通検査対象の導通検査を行う導通検査装置であって、上述した本発明の導通検査治具と、液体を貯留する液体タンクと、前記液体タンクの液体を、該液体の圧力を調整しつつ前記配管に送り込むことで、前記配管の内部に前記導通検査対象へと向かう液体の流れを生じさせて、前記液体受け部を介して前記接触端を前記導通検査対象に接触させる液体制御手段と、前記液体制御手段によって前記液体が前記配管に送り込まれた後に、前記液体の圧力が維持された状態で、前記導通ピンを通じて前記導通検査対象の導通を判定する導通判定手段と、を備えていることを特徴としている。 Further, in order to achieve the above object, a continuity inspection device of the present invention is a continuity inspection device for conducting a continuity inspection of a continuity inspection target, and the above-mentioned continuity inspection jig of the present invention and a liquid tank for storing a liquid. And, by feeding the liquid in the liquid tank to the pipe while adjusting the pressure of the liquid, a flow of the liquid toward the continuity inspection target is generated inside the pipe, and the liquid is passed through the liquid receiving portion. A liquid control means for bringing the contact end into contact with the continuity inspection target, and the conduction pin through the conduction pin in a state where the pressure of the liquid is maintained after the liquid is fed into the pipe by the liquid control means. And a continuity determining means for determining continuity of the inspection target.

本発明の導通検査装置によれば、上述した本発明の導通検査治具を用いていることから、端子金具付きの電線を導通検査対象としたときに導通ピンの接触が想定される端子金具について、変形や損傷をより効果的に抑制することができる。また、コイルバネのように劣化がないことから、一定の検査品質を保つことができる。そして、本発明の導通検査装置によれば、液体タンクの液体を、液体制御手段でその圧力を調整しつつ配管に送り込んで導通ピンを導通検査対象に接触させる。これにより、導通検査対象への接触圧の最適化を図って上記の端子金具の変形や損傷に対する抑制効果を高めることができる。 According to the continuity inspection device of the present invention, since the above-described continuity inspection jig of the present invention is used, the terminal fitting which is supposed to come into contact with the conduction pin when the electric wire with the terminal fitting is the subject of the continuity inspection. The deformation and damage can be suppressed more effectively. Further, since there is no deterioration unlike the coil spring, a constant inspection quality can be maintained. Then, according to the continuity inspection apparatus of the present invention, the liquid in the liquid tank is fed into the pipe while the pressure is adjusted by the liquid control means, and the continuity pin is brought into contact with the continuity inspection target. As a result, the contact pressure to the continuity inspection target can be optimized and the effect of suppressing the deformation and damage of the terminal fitting can be enhanced.

また、上記目的を達成するために、本発明の導通検査方法は、導通検査対象の導通検査を行う導通検査方法であって、前記導通検査対象を検査治具本体に保持する保持工程と、前記導通検査対象に対して接離可能な接触端を有するピン本体、及び、該ピン本体における前記接触端に対する他端側に設けられ、配管の内部を流れる液体を受けて前記接触端を前記導通検査対象に接触させる、カップ形状に形成されたカップ部において円筒状の周壁部の一端を塞ぐ底壁に当たる液体受け部、を有し、前記検査治具本体に支持された導通ピンを用い、圧力を調整しつつ液体を前記配管の内部に送り込むことで、前記配管の内部に前記導通検査対象へと向かう液体の流れを生じさせて、前記液体受け部を介して前記接触端を前記導通検査対象に接触させる液体制御工程と、前記液体制御工程によって前記液体が前記配管に送り込まれた後に、前記液体の圧力が維持された状態で、前記導通ピンを通じて前記導通検査対象の導通を判定する導通判定工程と、を備え、前記液体受け部における前記ピン本体側と、前記検査治具本体における前記導通検査対象の保持位置と、の間には、前記接触端の前記導通検査対象に対する接離方向に貫通して前記ピン本体を内部に通す貫通孔が設けられて前記導通検査対象に対する前記接触端の接離を案内するピンガイドが配置されており、前記ピンガイドは、前記検査治具本体から前記液体受け部に向かって延出した、前記カップ部における前記周壁部の外径よりも小さな外径を有する筒であり、前記液体制御工程では、前記ピンガイドが、前記導通ピンの前記導通検査対象に向かう移動を案内するとともに、前記液体受け部の側の開口端部に前記カップ部が当接したところで前記移動を規制していることを特徴とする。 In order to achieve the above object, the continuity inspection method of the present invention is a continuity inspection method for performing continuity inspection of a continuity inspection target, and a holding step of retaining the continuity inspection target in an inspection jig body, A pin main body having a contact end capable of coming into contact with and separating from a continuity inspection target, and the continuity inspection of the contact end provided on the other end side of the pin main body with respect to the contact end to receive liquid flowing inside a pipe. The cup portion formed in a cup shape to be brought into contact with a target has a liquid receiving portion that is a bottom wall that closes one end of the cylindrical peripheral wall portion , and a pressure is applied using a conduction pin supported by the inspection jig body. By sending the liquid into the pipe while adjusting, a flow of the liquid toward the conduction inspection target is generated inside the pipe, and the contact end is changed to the conduction inspection target through the liquid receiving portion. A liquid control step of contacting, and a continuity determination step of determining the continuity of the continuity inspection target through the conduction pin in a state where the pressure of the liquid is maintained after the liquid is fed into the pipe by the liquid control step. And between the pin main body side of the liquid receiving portion and the continuity inspection target holding position of the inspection jig main body, the contact end penetrates in the contact and separation direction with respect to the continuity inspection target. Then, a through hole that allows the pin body to pass through is provided therein, and a pin guide that guides contact and separation of the contact end with respect to the continuity inspection target is arranged, and the pin guide is the liquid from the inspection jig body. It is a cylinder extending toward the receiving portion and having an outer diameter smaller than the outer diameter of the peripheral wall portion of the cup portion , and in the liquid control step, the pin guide is the conduction inspection target of the conduction pin. It is characterized in that the movement is guided and the movement is regulated when the cup portion comes into contact with the opening end portion on the liquid receiving portion side.

本発明の導通検査方法によれば、液体受け部で配管の液体を受けることで導通ピンのピン本体における接触端を導通検査対象に接触させる。これにより、例えば端子金具付きの電線を導通検査対象としたときに、導通ピンの接触が想定される端子金具について、変形や損傷をより効果的に抑制することができる。また、コイルバネのように劣化がないことから、一定の検査品質を保つことができる。そして、本発明の導通検査方法によれば、液体制御工程でその圧力を調整しつつ液体を配管に送り込んで導通ピンを導通検査対象に接触させる。これにより、導通検査対象への接触圧の最適化を図って上記の端子金具の変形や損傷に対する抑制効果を高めることができる。 According to the conduction inspection method of the present invention, the contact end of the conduction pin in the pin body is brought into contact with the conduction inspection target by receiving the liquid in the pipe by the liquid receiving portion. Thereby, for example, when an electric wire with a terminal fitting is subjected to a continuity inspection, it is possible to more effectively suppress deformation or damage of the terminal fitting that is supposed to come into contact with the conduction pin. Further, since there is no deterioration unlike the coil spring, a constant inspection quality can be maintained. Then, according to the continuity inspection method of the present invention, the liquid is fed into the pipe while adjusting the pressure in the liquid control step, and the continuity pin is brought into contact with the continuity inspection target. As a result, the contact pressure to the continuity inspection target can be optimized and the effect of suppressing the deformation and damage of the terminal fitting can be enhanced.

本発明の導通検査治具、導通検査装置、及び導通検査方法によれば、端子金具付きの電線を導通検査対象としたときに導通ピンの接触が想定される端子金具について、変形や損傷をより効果的に抑制することができる。 According to the continuity inspection jig, the continuity inspection device, and the continuity inspection method of the present invention, it is possible to prevent deformation or damage of the terminal fittings that are supposed to come into contact with the conduction pins when the electric wire with the terminal fittings is subjected to the continuity inspection. It can be effectively suppressed.

本発明の一実施形態の導通検査装置の概略構成を示す図である。It is a figure showing the schematic structure of the continuity inspection device of one embodiment of the present invention. 図１の導通検査装置が備える導通検査治具を、その内部構造が見えるように示した断面斜視図である。FIG. 2 is a cross-sectional perspective view showing a continuity inspection jig provided in the continuity inspection device of FIG. 1 so that its internal structure can be seen. 導通検査治具について、図２中のＶ１矢視の断面において、導通ピンが端子金具と接した状態を示した図である。FIG. 5 is a diagram showing a state in which the conduction pin is in contact with the terminal fitting in the cross section taken along the arrow V1 in FIG. 2 of the continuity inspection jig. 図３中の領域Ａ１の拡大図である。It is an enlarged view of the area|region A1 in FIG. 導通検査治具について、図３と同様の断面において、導通ピンが端子金具と接していない状態を示した図である。It is the figure which showed the state which the conduction pin has not contacted with the terminal metal fitting in the cross section similar to FIG. 3 about a conduction inspection jig. 図５中の領域Ａ１の拡大図である。It is an enlarged view of the area|region A1 in FIG.

以下、本発明の一実施形態に係る導通検査装置、導通検査治具、及び導通検査方法について、図１〜図６を参照して説明する。 Hereinafter, a continuity inspection device, a continuity inspection jig, and a continuity inspection method according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6.

図１は、本発明の一実施形態の導通検査装置の概略構成を示す図である。図２は、図１の導通検査装置が備える導通検査治具を、その内部構造が見えるように示した断面斜視図である。図３は、導通検査治具について、図２中のＶ１矢視の断面において、導通ピンが端子金具と接した状態を示した図であり、図４は、図３中の領域Ａ１の拡大図である。また、図５は、導通検査治具について、図３と同様の断面において、導通ピンが端子金具と接していない状態を示した図であり、図６は、図５中の領域Ａ１の拡大図である。 FIG. 1 is a diagram showing a schematic configuration of a continuity inspection device according to an embodiment of the present invention. FIG. 2 is a cross-sectional perspective view showing a continuity inspection jig provided in the continuity inspection apparatus of FIG. 1 so that the internal structure thereof can be seen. 3 is a view showing a state in which the conduction pin is in contact with the terminal fitting in the cross section taken along the arrow V1 in FIG. 2 in the continuity inspection jig, and FIG. 4 is an enlarged view of a region A1 in FIG. Is. 5 is a view showing a state in which the conduction pin is not in contact with the terminal fitting in the cross section similar to FIG. 3 in the continuity inspection jig, and FIG. 6 is an enlarged view of a region A1 in FIG. Is.

本実施形態の導通検査装置１は、例えば、各図に示すように、水平に設置された検査台Ｋ上に配索された車両用のワイヤハーネス１０１の導通検査に用いられる。このワイヤハーネス１０１は、両端末に端子金具１０３が設けられた複数の電線１０２と、各電線１０２のそれぞれの端末の端子金具１０３を収容する複数のコネクタハウジング１０４と、を有している。ワイヤハーネス１０１は、幹部１０１ａとこの幹部１０１ａから分岐した分岐部１０１ｂとを有している。コネクタハウジング１０４に端子金具１０３が収容されることで、車両に搭載された電子機器等に接続されるコネクタ１０５を構成する。 The continuity inspection device 1 of the present embodiment is used, for example, as shown in each drawing, for the continuity inspection of a vehicle wire harness 101 arranged on a horizontally installed inspection table K. The wire harness 101 includes a plurality of electric wires 102 having terminal fittings 103 provided at both ends thereof, and a plurality of connector housings 104 for accommodating the terminal fittings 103 of the respective ends of the electric wires 102. The wire harness 101 has a trunk portion 101a and a branch portion 101b branched from the trunk portion 101a. By housing the terminal fitting 103 in the connector housing 104, a connector 105 connected to an electronic device or the like mounted on the vehicle is configured.

導通検査装置１は、導通検査対象として、端子金具１０３が各々の端部に設けられた複数本の電線１０２それぞれを導通検査対象として、各電線１０２の導通検査を行うものである。図１に示すように、導通検査装置１は、導通検査治具１０と、液体経路３０と、導通判定手段としての導通判定部４０と、を備えている。 The continuity inspection device 1 performs a continuity inspection of each electric wire 102, with each of the plurality of electric wires 102 provided with terminal fittings 103 at each end as the continuity inspection target. As shown in FIG. 1, the continuity inspection device 1 includes a continuity inspection jig 10, a liquid path 30, and a continuity determination unit 40 as a continuity determination unit.

図２〜図６に示すように、導通検査治具１０は、検査治具本体１１、複数の導通ピン２０、複数の配管３７、及び複数のピンガイド５０、を備えている。 As shown in FIGS. 2 to 6, the continuity inspection jig 10 includes an inspection jig body 11, a plurality of conduction pins 20, a plurality of pipes 37, and a plurality of pin guides 50.

検査治具本体１１は、例えば、電気絶縁性を有する合成樹脂など材料として用いて構成されている。検査治具本体１１は、矩形箱状の第１基台１１１と、矩形板状の第２基台１１２と、第２基台１１２の四角と第１基台１１１とを繋ぐ４本の脚部１１３と、コネクタハウジング１０４（即ち、コネクタ１０５）の保持部１１４と、を備えている。検査治具本体１１は、第２基台１１２が検査台Ｋ上に載置されるように設けられる。 The inspection jig body 11 is made of, for example, a material such as a synthetic resin having electric insulation. The inspection jig main body 11 has a rectangular box-shaped first base 111, a rectangular plate-shaped second base 112, and four legs connecting the squares of the second base 112 and the first base 111. 113 and a holding portion 114 of the connector housing 104 (that is, the connector 105). The inspection jig body 11 is provided so that the second base 112 is mounted on the inspection table K.

保持部１１４は、第２基台１１２の略中央に箱状に突出して設けられており、上方に向かって開口している。この保持部１１４の開口からコネクタ１０５が挿入されて、コネクタ１０５が保持部１１４に保持される。この保持部１１４によるコネクタ１０５の保持により、端子金具１０３付きの電線１０２が、導通検査対象として検査治具本体１１に保持される。 The holding portion 114 is provided in a box shape so as to protrude substantially in the center of the second base 112, and opens upward. The connector 105 is inserted through the opening of the holding portion 114, and the connector 105 is held by the holding portion 114. By holding the connector 105 by the holding portion 114, the electric wire 102 with the terminal fitting 103 is held in the inspection jig body 11 as a continuity inspection target.

第１基台１１１と第２基台１１２との間の空間における保持部１１４の直下の部分には、第１基台１１１から第２基台１１２へと向けて、複数の配管３７が立設されている。箱状の第１基台１１１の天井壁１１１ａには、配管３７の貫通孔１１１ａ−１が設けられている。各配管３７は、内部を、液体としての水が流れるものである。そして、配管３７の一端が、水が流出され、また吸引される流出入口３７ａとなっており、上記の貫通孔１１１ａ−１を通って、第１基台１１１の内部から、流出入口３７ａが第２基台１１２へと向かうように立設されている。また、各配管３７の他端側は、第１基台１１１の内部から不図示の延出孔を通って第１基台１１１の外部に延出して、液体制御部３２における後述の弁ユニット３２ｃに接続されている。この配管３７については、後でもう一度説明する。 A plurality of pipes 37 are erected from the first base 111 toward the second base 112 in a portion immediately below the holding portion 114 in the space between the first base 111 and the second base 112. Has been done. A through hole 111a-1 of the pipe 37 is provided in the ceiling wall 111a of the box-shaped first base 111. Water as a liquid flows through each of the pipes 37. Then, one end of the pipe 37 serves as an outflow inlet 37a through which water flows out and is sucked in. The inflow inlet 37a passes through the through hole 111a-1 from the inside of the first base 111, and the outflow inlet 37a becomes It is erected so as to face the two bases 112. The other end of each pipe 37 extends from the inside of the first base 111 to the outside of the first base 111 through an extension hole (not shown), and a valve unit 32c of the liquid control unit 32, which will be described later, is provided. It is connected to the. The pipe 37 will be described later again.

第２基台１１２においてコネクタ１０５の保持部１１４の底壁をなす部分には、鉛直方向に貫通する複数のピン挿通孔１１２ａが設けられている。各ピン挿通孔１１２ａは、保持部１１４に保持されるコネクタハウジング１０４に収容された各端子金具１０３に対応した位置に配置されている。また、第２基台１１２において保持部１１４の底壁をなす部分の第１基台１１１側には、各ピン挿通孔１１２ａに対応する位置に、円筒状のピンガイド５０が設けられている。各ピンガイド５０の内孔５１は各ピン挿通孔１１２ａに連通しており、後述する導通ピン２０のピン本体２２が挿通される。 A plurality of pin insertion holes 112a penetrating in the vertical direction are provided in the portion of the second base 112 that forms the bottom wall of the holding portion 114 of the connector 105. Each pin insertion hole 112a is arranged at a position corresponding to each terminal fitting 103 housed in the connector housing 104 held by the holding portion 114. In addition, a cylindrical pin guide 50 is provided at a position corresponding to each pin insertion hole 112a on the side of the first base 111 of the portion forming the bottom wall of the holding portion 114 in the second base 112. The inner hole 51 of each pin guide 50 communicates with each pin insertion hole 112a, and the pin body 22 of the conduction pin 20 described later is inserted therein.

複数の導通ピン２０は、例えば、銅合金などの導電性の材料を用いて構成されており、検査治具本体１１に支持されている。各導通ピン２０は、カップ部２１と、ピン本体２２と、を一体に有している。カップ部２１は、円筒状の周壁部２１ａと周壁部２１ａの一端を塞ぐ底壁に当たる液体受け部２１ｂとを有してカップ形状に形成されている。周壁部２１ａの外径は、上述したピンガイド５０の外径よりわずかに大きくなっている。ピン本体２２は、液体受け部２１ｂから周壁部２１ａの軸線上に延在する円柱状に形成されており、このピン本体２２の先端が、端子金具１０３に接触する接触端２２ａとなっている。ピン本体２２の径は、カップ部２１の外径よりも小さくなっており、具体的にはφ０．３ｍｍ程度まで細径化されている。また、このピン本体２２の径は、ピンガイド５０の内孔５１及びピン挿通孔１１２ａの内径よりわずかに小さな径でもある。 The plurality of conduction pins 20 are made of, for example, a conductive material such as a copper alloy, and are supported by the inspection jig body 11. Each conduction pin 20 integrally includes a cup portion 21 and a pin body 22. The cup portion 21 is formed in a cup shape having a cylindrical peripheral wall portion 21a and a liquid receiving portion 21b corresponding to a bottom wall closing one end of the peripheral wall portion 21a. The outer diameter of the peripheral wall portion 21a is slightly larger than the outer diameter of the pin guide 50 described above. The pin body 22 is formed in a cylindrical shape extending from the liquid receiving portion 21b on the axis of the peripheral wall portion 21a, and the tip of the pin body 22 is a contact end 22a that comes into contact with the terminal fitting 103. The diameter of the pin body 22 is smaller than the outer diameter of the cup portion 21, and specifically, it is reduced to about φ0.3 mm. The diameter of the pin body 22 is also slightly smaller than the inner diameters of the inner hole 51 of the pin guide 50 and the pin insertion hole 112a.

各導通ピン２０は、それぞれの対応するピン挿通孔１１２ａ及びピンガイド５０に、円柱状のピン本体２２が、ピンガイド５０によって上下方向に案内されつつ移動自在に収容されている。つまり、各導通ピン２０は、そのピン本体２２が、端子金具１０３に対してピン本体２２の接触端２２ａが対向配置されるとともにピン本体２２の接触端２２ａを端子金具１０３に接離可能なように設けられている。また、カップ部２１の周壁部２１ａの外径がピンガイド５０の外径よりわずかに大きくなっていることから、各導通ピン２０の上方への移動は、それぞれの対応するピンガイド５０にカップ部２１が当接したところで規制される。 Each conduction pin 20 is movably accommodated in the corresponding pin insertion hole 112a and the pin guide 50, while the columnar pin body 22 is vertically guided by the pin guide 50. That is, in each conduction pin 20, the pin body 22 is arranged such that the contact end 22 a of the pin body 22 faces the terminal fitting 103 and the contact end 22 a of the pin body 22 can be brought into contact with and separated from the terminal fitting 103. It is provided in. Further, since the outer diameter of the peripheral wall portion 21a of the cup portion 21 is slightly larger than the outer diameter of the pin guide 50, the upward movement of each conduction pin 20 causes the corresponding pin guide 50 to move to the corresponding cup portion. It is regulated when 21 abuts.

複数のピンガイド５０は、それぞれの対応する導通ピン２０のカップ部２１におけるピン本体２２側の端部と、検査治具本体１１における端子金具１０３の収容位置と、の間に配置される。各ピンガイド５０は、上記のように細径化されたピン本体２２の剛性よりも高い剛性を有した円筒である。各ピンガイド５０の内孔５１は、上述したようにピン挿通孔１１２ａに連通し、ピン本体２２の接触端２２ａの端子金具１０３に対する接離方向に貫通してピン本体２２を内部に通す貫通孔となっている。このような構造により、各ピンガイド５０は、導通ピン２０のピン本体２２における接触端２２ａの、端子金具１０３に対する接離を案内する。 The plurality of pin guides 50 are arranged between the corresponding ends of the cup portions 21 of the corresponding conduction pins 20 on the pin body 22 side and the accommodation positions of the terminal fittings 103 in the inspection jig body 11. Each pin guide 50 is a cylinder having a rigidity higher than that of the pin body 22 whose diameter is reduced as described above. The inner hole 51 of each pin guide 50 communicates with the pin insertion hole 112a as described above, and penetrates the contact end 22a of the pin body 22 in the contacting/separating direction with respect to the terminal fitting 103 to pass the pin body 22 inside. Has become. With such a structure, each pin guide 50 guides contact and separation of the contact end 22a of the pin body 22 of the conduction pin 20 with respect to the terminal fitting 103.

液体経路３０は、液体としての水を配管３７に出し入れするための経路であり、水を貯留する液体タンク３１と、液体制御手段としての液体制御部３２と、を有している。また、液体制御部３２は、液体タンク３１の水を、その圧力を調整しつつ配管３７に送り込んで導通ピン２０を水の圧力により端子金具１０３に押し付けて接触させるものである。液体制御部３２は、ポンプ３２ａと、レギュレータ３２ｂと、弁ユニット３２ｃと、を有している。 The liquid path 30 is a path for taking water as a liquid in and out of the pipe 37, and has a liquid tank 31 for storing water and a liquid control unit 32 as a liquid control means. Further, the liquid control unit 32 feeds the water in the liquid tank 31 into the pipe 37 while adjusting the pressure thereof, and presses the conduction pin 20 against the terminal fitting 103 by the pressure of the water to bring it into contact therewith. The liquid control unit 32 has a pump 32a, a regulator 32b, and a valve unit 32c.

ポンプ３２ａは、液体タンク３１から配管３５への水の送出及び配管３５から液体タンク３１への水の吸引を行う。レギュレータ３２ｂは、配管３５を通じて液体タンク３１と接続されており、液体タンク３１からの水の圧力を所定値に減圧する。弁ユニット３２ｃは、配管３６を通じてレギュレータ３２ｂと接続されており、レギュレータ３２ｂからの水を供給及び遮断する弁装置（図示なし）と、弁装置の下流に設けられ各導通検査治具１０に水を分配する分配部（図示なし）と、を有している。弁ユニット３２ｃの分配部と各導通検査治具１０とは、配管３７で接続されている。 The pump 32 a sends water from the liquid tank 31 to the pipe 35 and sucks water from the pipe 35 to the liquid tank 31. The regulator 32b is connected to the liquid tank 31 through a pipe 35, and reduces the pressure of water from the liquid tank 31 to a predetermined value. The valve unit 32c is connected to the regulator 32b through a pipe 36, and supplies water to the valve device (not shown) that supplies and shuts off the water from the regulator 32b and the continuity inspection jig 10 provided downstream of the valve device. And a distributing unit (not shown) for distributing. The distributor of the valve unit 32c and each continuity inspection jig 10 are connected by a pipe 37.

配管３７における導通検査治具１０側の流出入口３７ａは、図３〜図６に示すように、対応するピン挿通孔１１２ａ内に同軸に配置され、当該ピン挿通孔１１２ａに通された各通ピン２０のカップ部２１に挿入されている。つまり、配管３７の流出入口３７ａには、導通ピン２０のカップ部２１が被せられている。 As shown in FIGS. 3 to 6, the inflow port 37a of the pipe 37 on the side of the continuity inspection jig 10 is coaxially arranged in the corresponding pin insertion hole 112a, and each through pin passed through the pin insertion hole 112a. It is inserted in the cup portion 21 of 20. That is, the outflow port 37 a of the pipe 37 is covered with the cup portion 21 of the conduction pin 20.

ポンプ３２ａが水を送出すると、配管３７の内部に、端子金具１０３へと向かう水の流れが生じる。流れた水は、流出入口３７ａから上方に向けて流出して導通ピン２０のカップ部２１の内部に流入する。また、配管３７は、その外径が、カップ部２１の周壁部２１ａの内径よりわずかに小さく形成されている。配管３７の流出入口３７ａから水が流出した状態（水の圧力が加えられた状態）においては、その水が、導通ピン２０におけるカップ部２１の底壁に当たる液体受け部２１ｂで受けられる。すると、導通ピン２０は上方に移動してピン本体２２の接触端２２ａがピン挿通孔１１２ａから突出する（図３、図４）。このようにピン挿通孔１１２ａから突出したピン本体２２の接触端２２ａが、コネクタハウジング１０４内に進入して端子金具１０３（即ち、導通検査対象としての電線１０２）に押し付けられて接触する。このように、配管３７の流出入口３７ａからの水の流出により、端子金具１０３と導通ピン２０とが非接触状態から接触状態に切り換えられる。また、接触状態に切り替わったタイミングで、水の流出は止められて、導通ピン２０の位置が維持され、その結果、接触状態が維持される。 When the pump 32a delivers water, a flow of water toward the terminal fitting 103 is generated inside the pipe 37. The flowing water flows upward from the outflow port 37 a and flows into the cup portion 21 of the conduction pin 20. The outer diameter of the pipe 37 is slightly smaller than the inner diameter of the peripheral wall portion 21 a of the cup portion 21. When water flows out from the outflow port 37a of the pipe 37 (a state where water pressure is applied), the water is received by the liquid receiving portion 21b corresponding to the bottom wall of the cup portion 21 of the conduction pin 20. Then, the conduction pin 20 moves upward, and the contact end 22a of the pin body 22 projects from the pin insertion hole 112a (FIGS. 3 and 4). In this way, the contact end 22a of the pin main body 22 protruding from the pin insertion hole 112a enters the connector housing 104 and is pressed against the terminal fitting 103 (that is, the electric wire 102 as the continuity inspection target) to come into contact therewith. In this way, the outflow of the water through the outflow port 37a of the pipe 37 switches the terminal fitting 103 and the conduction pin 20 from the non-contact state to the contact state. At the timing of switching to the contact state, the outflow of water is stopped and the position of the conduction pin 20 is maintained, so that the contact state is maintained.

ここで、本実施形態では、カップ部２１の深さをある程度深くし、さらに、配管３７の外径と、カップ部２１の周壁部２１ａの内径との差を、上述した接触状態で水が表面張力等により両者間に留まる程度にわずかなものとなっている。これにより、カップ部２１と配管３７との間からの水の漏れ出しが回避され、その結果、隣の配管３７に設けられた導通ピン２０に漏れ出した水が接触するといった事態が回避される。 Here, in the present embodiment, the depth of the cup portion 21 is increased to some extent, and the difference between the outer diameter of the pipe 37 and the inner diameter of the peripheral wall portion 21a of the cup portion 21 is adjusted so that the water is in the contact state as described above. It is so small that it stays between the two due to tension. This prevents water from leaking out between the cup portion 21 and the pipe 37, and as a result, avoids a situation in which the leaking water comes into contact with the conduction pin 20 provided on the adjacent pipe 37. ..

尚、隣の配管３７に設けられた導通ピン２０に漏れ出した水が接触するといった事態を回避する構成はこれに限るものではない。例えば、配管３７の外径と、カップ部２１の周壁部２１ａの内径との差は、水の漏れ出しを許容する程度に広くし、各配管３７に、漏れ出した水を受ける水受けを設けるように構成してもよい。この水受けにより、隣の配管３７に設けられた導通ピン２０に漏れ出した水が接触するといった事態が回避される。尚、この場合には、ピン本体２２の接触端２２ａと端子金具１０３との接触後も、配管３７への水の送込みが続けられ、流出入口３７ａから水が流出し続けて接触の維持が図られる。水の送込みが止められるとカップ部２１即ちその底壁たる液体受け部２１ｂが水を受けなくなり、自重により下方に落下してピン本体２２の接触端２２ａが端子金具１０３から離間する。 Note that the configuration for avoiding the situation where leaking water comes into contact with the conduction pin 20 provided in the adjacent pipe 37 is not limited to this. For example, the difference between the outer diameter of the pipe 37 and the inner diameter of the peripheral wall portion 21a of the cup portion 21 is wide enough to allow leakage of water, and each pipe 37 is provided with a water receiver for receiving the leaked water. It may be configured as follows. With this water receiver, it is possible to avoid a situation in which leaking water comes into contact with the conduction pin 20 provided in the adjacent pipe 37. In this case, even after the contact end 22a of the pin body 22 and the terminal fitting 103 are contacted with each other, the water is continuously fed into the pipe 37, and the water is continuously discharged from the outflow port 37a to maintain the contact. Planned. When the feeding of water is stopped, the cup portion 21, that is, the liquid receiving portion 21b that is the bottom wall of the cup portion 21 does not receive water and falls downward due to its own weight, and the contact end 22a of the pin body 22 separates from the terminal fitting 103.

また、本実施形態では配管３７における流出入口３７ａにカップ部２１が被せられて、カップ部２１の内部に流入した水を、カップ部２１の底壁に当たる液体受け部２１ｂが受けるように構成されている。しかしながら、水を液体受け部で受ける構成は、これに限るものではない。例えば、配管３７の端部をシリンダ孔として利用し、この端部に例えば円板状あるいは円柱ブロック状等の液体受け部を嵌め込み、配管３７の端部からピン本体の接触端を露出させるように構成してもよい。この場合、配管３７の内部で水が液体受け部で受けられることとなるので、配管３７からそもそも水が漏れださない構成となる。 Further, in the present embodiment, the outflow port 37 a of the pipe 37 is covered with the cup portion 21, and the water that has flowed into the inside of the cup portion 21 is configured to be received by the liquid receiving portion 21 b that is a bottom wall of the cup portion 21. There is. However, the structure for receiving water in the liquid receiving portion is not limited to this. For example, the end of the pipe 37 is used as a cylinder hole, and a liquid receiving portion such as a disc or a cylinder block is fitted into this end to expose the contact end of the pin body from the end of the pipe 37. You may comprise. In this case, since water is received by the liquid receiving portion inside the pipe 37, the water does not leak from the pipe 37 in the first place.

本実施形態では、ポンプ３２ａが液体タンク３１へと水を引戻すと、配管３７の流出入口３７ａへと、カップ部２１の内部の水が吸引される。これにより、配管３７の内部に水が逆向きに流れて、カップ部２１即ちその底壁たる液体受け部２１ｂが水を受けなくなり、吸引される水と一緒に下方に引戻される。そして、配管３７に液体受け部２１ｂが突き当り、ピン本体２２の接触端２２ａがピン挿通孔１１２ａ内に没入されて、端子金具１０３から離間する（図５、図６）。このように、配管３７には、内部を流れる液体の向きが、液体受け部２１ｂがピン本体２２の接触端を端子金具１０３に接触させるときの向きと、その逆向きと、で切換可能に水が流される。そして、液体受け部２１ｂが、上記の逆向きに流れる水と一緒に引戻されることで、ピン本体２２の接触端２２ａが端子金具１０３から離間して、端子金具１０３と導通ピン２０とが、接触状態から非接触状態に切り換えられる。 In the present embodiment, when the pump 32a draws water back to the liquid tank 31, the water inside the cup portion 21 is sucked into the outflow port 37a of the pipe 37. As a result, water flows backward in the pipe 37, and the cup portion 21, that is, the liquid receiving portion 21b that is the bottom wall of the pipe portion 37 does not receive the water, and is pulled back together with the sucked water. Then, the liquid receiving portion 21b hits the pipe 37, the contact end 22a of the pin main body 22 is immersed in the pin insertion hole 112a, and is separated from the terminal fitting 103 (FIGS. 5 and 6). In this way, the direction of the liquid flowing inside the pipe 37 can be switched between the direction in which the liquid receiving portion 21b brings the contact end of the pin body 22 into contact with the terminal fitting 103, and the opposite direction. Is washed away. Then, the liquid receiving portion 21b is pulled back together with the water flowing in the opposite direction, so that the contact end 22a of the pin body 22 is separated from the terminal fitting 103, and the terminal fitting 103 and the conduction pin 20 are separated from each other. The contact state is switched to the non-contact state.

配管３７は、第１基台１１１の天井壁１１１ａの貫通孔１１１ａ−１を貫通した状態で、この天井壁１１１ａに固定されている。 The pipe 37 is fixed to the ceiling wall 111a in a state of penetrating the through hole 111a-1 of the ceiling wall 111a of the first base 111.

また、複数の導通ピン２０それぞれに、後述の導通判定部４０へと至る導通検査電線４５の一端が接続されている。 In addition, one end of a continuity inspection electric wire 45 reaching a continuity determination unit 40 described below is connected to each of the plurality of continuity pins 20.

導通判定部４０は、例えば、パーソナルコンピュータなどで構成されており、上述した液体タンク３１、ポンプ３２ａ、レギュレータ３２ｂ、及び弁ユニット３２ｃに対し制御信号を送信可能に接続されている。導通判定部４０は、導通検査に際して、ポンプ３２ａによる水の送出及び吸引を制御し、レギュレータ３２ｂの減圧値を設定し、弁ユニット３２ｃによる水の供給及び遮断を制御する。 The continuity determination unit 40 is composed of, for example, a personal computer or the like, and is connected to the liquid tank 31, the pump 32a, the regulator 32b, and the valve unit 32c described above so that control signals can be transmitted. During the continuity test, the continuity determination unit 40 controls the delivery and suction of water by the pump 32a, sets the pressure reduction value of the regulator 32b, and controls the supply and shutoff of water by the valve unit 32c.

次に、上述した導通検査装置１で行われる導通検査方法について以下に説明する。 Next, a continuity inspection method performed by the above-mentioned continuity inspection device 1 will be described below.

まず、図１に示されているように、ワイヤハーネス１０１を検査台Ｋに配索し、ワイヤハーネス１０１の端末に設けられたコネクタ１０５のコネクタハウジング１０４を、対応する導通検査治具１０の検査治具本体に保持させる（保持工程）。これにより、端子金具１０３付きの電線１０２が導通検査対象として検査治具本体１１に保持される。図１において、ワイヤハーネス１０１は、幹部１０１ａの端部及び分岐部１０１ｂの端部に設けられたコネクタ１０５が、導通検査治具１０に保持されている。また、当該ワイヤハーネス１０１における図示しない他のコネクタ１０５についても同様に図示しない導通検査治具１０に嵌合されている。この状態において、導通検査治具１０の各導通ピン２０は、コネクタ１０５における対応する各端子金具１０３に接触していない（図５及び図６）。 First, as shown in FIG. 1, the wire harness 101 is arranged on the inspection table K, and the connector housing 104 of the connector 105 provided at the terminal of the wire harness 101 is inspected by the corresponding continuity inspection jig 10. Hold the jig body (holding process). As a result, the electric wire 102 with the terminal fitting 103 is held in the inspection jig body 11 as a continuity inspection target. 1, in the wire harness 101, the connectors 105 provided at the ends of the trunk portion 101a and the branch portion 101b are held by the continuity inspection jig 10. Further, other connectors 105 (not shown) in the wire harness 101 are similarly fitted to the continuity inspection jig 10 (not shown). In this state, the conduction pins 20 of the continuity inspection jig 10 are not in contact with the corresponding terminal fittings 103 of the connector 105 (FIGS. 5 and 6).

次に、導通判定部４０は、制御信号を送信して、ポンプ３２ａによる水の送出を行い、レギュレータ３２ｂにおける減圧値を設定する。このとき、レギュレータ３２ｂの減圧値としては、導通ピン２０が上方に移動してそのピン本体２２の接触端２２ａが端子金具１０３に接し、導通ピン２０と端子金具１０３との間の導通を確保するために最低限必要な力で押し付けられて接触する値が設定される。 Next, the continuity determination unit 40 transmits a control signal, causes the pump 32a to send out water, and sets the pressure reduction value in the regulator 32b. At this time, as the reduced pressure value of the regulator 32b, the conduction pin 20 moves upward and the contact end 22a of the pin main body 22 contacts the terminal fitting 103 to secure the conduction between the conduction pin 20 and the terminal fitting 103. For this reason, the value that is pressed and contacted with the minimum required force is set.

それから、導通判定部４０は、制御信号を送信して、弁ユニット３２ｃの弁装置を開いて配管３７に水を送り込み、配管３７の内部に、端子金具１０３へと向かう水の流れを生じさせる（液体制御工程）。これにより、流出した水の圧力により各導通ピン２０が上方に移動してピン挿通孔１１２ａからそれぞれのピン本体２２の接触端２２ａが突出する。その結果、各ピン本体２２の接触端２２ａが、対応する各端子金具１０３と導通を確保するために最低限必要な力で端子金具１０３に押し付けられて接触する（図３及び図４）。ピン本体２２の接触端２２ａが端子金具１０３に接触したタイミングで、導通判定部４０は、制御信号を送信して、弁ユニット３２ｃの弁装置を閉じて水の流れを止める。これにより、ピン本体２２の接触端２２ａが端子金具１０３に接触した状態が維持される。 Then, the continuity determination unit 40 transmits a control signal to open the valve device of the valve unit 32c to send water to the pipe 37, and cause a flow of water toward the terminal fitting 103 inside the pipe 37 ( Liquid control process). As a result, each conductive pin 20 moves upward due to the pressure of the water flowing out, and the contact end 22a of each pin body 22 projects from the pin insertion hole 112a. As a result, the contact end 22a of each pin main body 22 is pressed against and comes into contact with the corresponding terminal fitting 103 with the minimum necessary force for ensuring conduction (FIGS. 3 and 4). At the timing when the contact end 22a of the pin body 22 contacts the terminal fitting 103, the conduction determining unit 40 transmits a control signal to close the valve device of the valve unit 32c and stop the flow of water. As a result, the contact end 22a of the pin body 22 is maintained in contact with the terminal fitting 103.

そして、導通判定部４０は、ワイヤハーネス１０１の複数の電線１０２のうちの一の電線１０２を選択し、この一の電線１０２の両端末の端子金具１０３に正常（即ち、誤配線等がない）であれば接触される一対の導通ピン２０間に通電する。そして、導通判定部４０は、それら一対の導通ピン２０間に電流が流れるか否かを判断することにより導通を判定する（導通判定工程）。また、これら一対の導通ピン２０とこれら以外の他の導通ピン２０との導通を検査して電線１０２間の短絡や誤配線の有無を判定してもよい。 Then, the continuity determination unit 40 selects one of the plurality of electric wires 102 of the wire harness 101, and the terminal fittings 103 of both terminals of the one electric wire 102 are normal (that is, there is no incorrect wiring). If so, electricity is applied between the pair of conductive pins 20 that are in contact with each other. Then, the conduction determination unit 40 determines conduction by determining whether or not a current flows between the pair of conduction pins 20 (conduction determination step). Further, the conduction between the pair of conduction pins 20 and the conduction pins 20 other than these may be inspected to determine whether or not there is a short circuit between the electric wires 102 or erroneous wiring.

導通判定部４０は、ワイヤハーネス１０１の複数の電線１０２の全てについて上記と同様に導通を検査する。導通判定部４０は、全ての導通検査が終了すると、制御信号を送信して、ポンプ３２ａによる水の引戻しを行うとともに弁ユニット３２ｃの弁装置を開く。これにより、配管３７から液体タンク３１へと水が引戻されて、配管３７の内部に、端子金具１０３とは反対側へと向かう水の流れが生じる（第２の液体制御工程）。その結果、配管３７の流出入口３７ａへと水が吸引され、導通ピン２０が下方に引戻され、液体受け部２１ｂが配管３７の流出入口３７ａに突き当り、当該配管３７によって保持される（図５及び図６）。その後、導通判定部４０は、制御信号を送信して、弁ユニット３２ｃの弁装置を閉じるとともにポンプ３２ａを停止させて、導通検査を終了する。 The continuity determination unit 40 inspects all of the plurality of electric wires 102 of the wire harness 101 for continuity in the same manner as above. When all the continuity tests are completed, the continuity determination unit 40 transmits a control signal to cause the pump 32a to pull back water and open the valve device of the valve unit 32c. As a result, water is drawn back from the pipe 37 to the liquid tank 31, and a flow of water is generated inside the pipe 37 toward the side opposite to the terminal fitting 103 (second liquid control step). As a result, water is sucked into the outflow port 37a of the pipe 37, the conducting pin 20 is pulled back downward, the liquid receiving portion 21b hits the outflow port 37a of the pipe 37, and is held by the pipe 37 (FIG. 5). And FIG. 6). After that, the continuity determination unit 40 transmits a control signal, closes the valve device of the valve unit 32c, stops the pump 32a, and ends the continuity test.

以上に説明した本実施形態の導通検査治具１０、導通検査装置１、および導通検査方法によれば、カップ部２１の内部に端子金具１０３へと向かって水を流入させることで導通ピン２０を端子金具１０３に接触させる。導通ピン２０の接触に水の流入を利用することで、毎回の導通検査において導通ピン２０と端子金具１０３との間の導通を確保するために最低限必要な力で当該導通ピン２０を端子金具１０３に接触させることができる。これにより、端子金具１０３の変形や損傷をより効果的に抑制することができる。また、コイルバネのように劣化がないことから、常に一定の力で導通ピン２０を端子金具１０３に接触させることができ、そのため、一定の検査品質を保つことができる。 According to the continuity inspection jig 10, the continuity inspection device 1, and the continuity inspection method of the present embodiment described above, the conduction pin 20 is moved by causing water to flow into the cup portion 21 toward the terminal fitting 103. Contact the terminal fitting 103. By utilizing the inflow of water to contact the conduction pin 20, the conduction pin 20 is connected to the terminal metal fitting with a minimum necessary force for ensuring conduction between the conduction pin 20 and the terminal metal fitting 103 in each continuity test. 103 can be contacted. Thereby, the deformation and damage of the terminal fitting 103 can be suppressed more effectively. Further, since there is no deterioration like a coil spring, the conduction pin 20 can always be brought into contact with the terminal fitting 103 with a constant force, and therefore a constant inspection quality can be maintained.

また、本実施形態では、配管３７の内部に、液体受け部２１ｂがピン本体２２の接触端２２ａを端子金具１０３に接触させるときの向きと、その逆向きと、で切換可能に水が流される。そして、上記の逆向きに流れる水と一緒に液体受け部２１ｂが移動することで、ピン本体２２の接触端２２ａが端子金具１０３から離間する。このように、ピン本体２２の接触端２２ａの端子金具１０３からの離間も、水を介して行われることから、このような切換えのための構造を配管３７とは別に導通検査治具１０に備える等といったことが不要となる。そして、導通検査方法において、このような別途構造を用いて切換えを行う等といったことも不要となる。このように、本実施形態では、導通検査治具１０（即ち、導通検査装置１）の構造について簡単化が図られ、導通検査方法の処理について簡単化が図られている。 Further, in the present embodiment, water is flown in the pipe 37 so that the liquid receiving portion 21b can switch between the direction in which the contact end 22a of the pin body 22 contacts the terminal fitting 103 and the opposite direction. .. Then, the liquid receiving portion 21b moves together with the water flowing in the opposite direction, so that the contact end 22a of the pin body 22 is separated from the terminal fitting 103. In this way, the contact end 22a of the pin body 22 is also separated from the terminal fitting 103 via water, so that a structure for such switching is provided in the continuity inspection jig 10 separately from the pipe 37. Etc. are unnecessary. Then, in the continuity inspection method, it is not necessary to perform switching using such a separate structure. As described above, in this embodiment, the structure of the continuity inspection jig 10 (that is, the continuity inspection device 1) is simplified, and the process of the continuity inspection method is simplified.

また、本実施形態では、導通ピン２０のピン本体２２を細径化されたピン状として、端子金具１０３への接触圧を和らげて端子金具１０３の変形や損傷に対する抑制効果が高められている。そして、ピン本体２２の接触端２２ａの接離をピンガイド５０で案内することにより、ピン本体２２の変形等が抑えられている。 Further, in the present embodiment, the pin body 22 of the conduction pin 20 is made into a pin shape with a reduced diameter, so that the contact pressure on the terminal fitting 103 is softened and the effect of suppressing deformation and damage of the terminal fitting 103 is enhanced. By guiding the contacting/separating of the contact end 22a of the pin body 22 with the pin guide 50, deformation of the pin body 22 or the like is suppressed.

また、本実施形態の導通検査装置１によれば、液体タンク３１の水を、液体制御部３２でその圧力を調整しつつ配管３７に送り込んで導通ピン２０を端子金具１０３に接触させる。これにより、端子金具１０３への接触圧の最適化を図って端子金具１０３の変形や損傷に対する抑制効果を高めることができる。 Further, according to the continuity inspection device 1 of the present embodiment, the water in the liquid tank 31 is fed into the pipe 37 while adjusting the pressure thereof by the liquid control unit 32 to bring the conduction pin 20 into contact with the terminal fitting 103. This makes it possible to optimize the contact pressure on the terminal fitting 103 and enhance the effect of suppressing deformation and damage of the terminal fitting 103.

同様に、本実施形態の導通検査方法によれば、液体タンク３１の水を、その圧力を調整しつつ配管３７に送り込んで導通ピン２０を端子金具１０３に接触させる。これにより、端子金具１０３への接触圧の最適化を図って端子金具１０３の変形や損傷に対する抑制効果を高めることができる。 Similarly, according to the continuity inspection method of the present embodiment, the water in the liquid tank 31 is sent into the pipe 37 while adjusting the pressure, and the continuity pin 20 is brought into contact with the terminal fitting 103. This makes it possible to optimize the contact pressure on the terminal fitting 103 and enhance the effect of suppressing deformation and damage of the terminal fitting 103.

以上、本発明について、好ましい実施形態を挙げて説明したが、本発明の導通検査治具、導通検査装置、及び導通検査方法は、これらの実施形態の構成に限定されるものではない。 Although the present invention has been described above with reference to the preferred embodiments, the continuity inspection jig, the continuity inspection device, and the continuity inspection method of the present invention are not limited to the configurations of these embodiments.

上述した実施形態では、検査治具本体１１がコネクタ１０５（即ち、コネクタハウジング１０４）を保持することにより、端子金具１０３付きの電線１０２を導通検査対象として間接的に端子金具１０３を保持する構成が例示されている。しかしながら、本発明は、これに限定されるものではなく、例えば、端子金具１０３がコネクタハウジング１０４に収容されない構成としたワイヤハーネスにおいて、端子金具１０３付きの電線１０２を導通検査対象として直接保持するように検査治具本体１１を構成してもよい。 In the above-described embodiment, the inspection jig main body 11 holds the connector 105 (that is, the connector housing 104), so that the electric wire 102 with the terminal fitting 103 is indirectly held as the target of the continuity test. It is illustrated. However, the present invention is not limited to this, and for example, in a wire harness in which the terminal fitting 103 is not housed in the connector housing 104, the electric wire 102 with the terminal fitting 103 is directly held as a continuity inspection target. Alternatively, the inspection jig body 11 may be configured.

また、上述した実施形態では、両端に端子金具１０３が設けられた電線１０２の各末端を、導通ピン２０を介して導通判定部４０に電気的に接続して導通を検査する形態が例示されている。しかしながら、本発明はこれに限るものではない。導通判定部４０との接続は、例えば、一端のみに端子金具が設けられた電線の端子金具側の一端は導通ピンを介して接続し、他端はクリップ等の接続手段を介して接続する形態であってもよい。 Further, in the above-described embodiment, a mode in which each end of the electric wire 102 having the terminal fittings 103 provided at both ends is electrically connected to the continuity determination unit 40 via the continuity pin 20 to inspect the continuity is exemplified. There is. However, the present invention is not limited to this. The connection with the continuity determining unit 40 is, for example, a mode in which one end of the electric wire having a terminal fitting provided on only one end is connected through a conduction pin and the other end is connected through a connecting means such as a clip. May be

また、上述した実施形態では、本発明にいう液体の一例として水が例示されている。しかしながら、本発明にいう液体は、水に限るものではなく、配管を通してその先端から吹き出させることが可能な液体であれば具体的な液体の如何を問うものではない。尚、上述の実施形態では、配管３７から漏れた水によるピン間の導通を回避するため、上述したように、導通ピン２０におけるカップ部２１の形状に水を漏らさないような工夫が凝らされている。他方、ピン間の絶縁のため導電性のない油等の液体を採用することとしてもよい。 Further, in the above-described embodiment, water is exemplified as an example of the liquid referred to in the present invention. However, the liquid referred to in the present invention is not limited to water, and it does not matter whether it is a specific liquid or not as long as it is a liquid that can be blown out from its tip through a pipe. In the above-described embodiment, in order to avoid conduction between the pins due to water leaking from the pipe 37, as described above, the shape of the cup portion 21 of the conduction pin 20 is elaborated so as not to leak water. There is. On the other hand, liquid such as oil having no conductivity may be adopted for insulation between the pins.

また、上述した実施形態では、本発明にいうポンプ３２ａによる水の送出及び吸引の一例として、導通判定部４０からの制御の下にポンプ３２ａが水の送出及び吸引を行う形態が例示されている。しかしながら、ポンプ３２ａによる水の送出及び吸引はこれに限るものではなく、例えば作業員によるスイッチ操作などを受けてポンプ３２ａを動作させる形態などであってもよい。 Further, in the above-described embodiment, as an example of the delivery and suction of water by the pump 32a according to the present invention, a mode in which the pump 32a delivers and sucks water under the control of the conduction determining unit 40 is illustrated. .. However, the delivery and suction of the water by the pump 32a are not limited to this, and the pump 32a may be operated in response to a switch operation by an operator, for example.

なお、前述した実施形態は本発明の代表的な形態を示したに過ぎず、本発明は、実施形態に限定されるものではない。即ち、当業者は、従来公知の知見に従い、本発明の骨子を逸脱しない範囲で種々変形して実施することができる。かかる変形によってもなお本発明の導通検査治具、導通検査装置、及び導通検査方法の構成を具備する限り、勿論、本発明の範疇に含まれるものである。 It should be noted that the above-described embodiment merely shows a typical form of the present invention, and the present invention is not limited to the embodiment. That is, those skilled in the art can carry out various modifications according to the conventionally known knowledge without departing from the gist of the present invention. Such modifications are, of course, included in the scope of the present invention as long as they have the configurations of the continuity inspection jig, the continuity inspection device, and the continuity inspection method of the present invention.

１導通検査装置
１０導通検査治具
１１検査治具本体
２０導通ピン
２１カップ部
２１ａ周壁部
２１ｂ液体受け部
２２ピン本体
２２ａ接触端
３０液体経路
３１液体タンク
３２液体制御部（液体制御手段の一例）
３２ａポンプ
３２ｂレギュレータ
３２ｃ弁ユニット
３７配管
３７ａ流出入口
４０導通判定部（導通判定手段の一例）
４５導通検査電線
５０ピンガイド
５１内孔
１０１ワイヤハーネス
１０２電線（導通検査対象の一例の一部）
１０３端子金具（導通検査対象の一例の一部）
１０４コネクタハウジング
１０５コネクタ DESCRIPTION OF SYMBOLS 1 Continuity inspection device 10 Continuity inspection jig 11 Inspection jig main body 20 Conduction pin 21 Cup part 21a Peripheral wall part 21b Liquid receiving part 22 Pin main body 22a Contact end 30 Liquid path 31 Liquid tank 32 Liquid control part (an example of liquid control means)
32a Pump 32b Regulator 32c Valve unit 37 Piping 37a Outflow/inlet 40 Continuity determination unit (an example of continuity determination means)
45 continuity inspection electric wire 50 pin guide 51 inner hole 101 wire harness 102 electric wire (part of an example of continuity inspection target)
103 terminal fittings (a part of an example of a continuity inspection target)
104 connector housing 105 connector

Claims

A continuity inspection jig used for continuity inspection of a continuity inspection target,
An inspection jig body for holding the continuity inspection target,
A pipe, which is supported by the inspection jig body and through which a liquid flows,
A pin main body having a contact end that can be brought into contact with and separated from the continuity inspection target, and the continuity inspection provided on the other end side of the pin main body with respect to the contact end and receiving the liquid to move the contact end. A liquid receiving portion, which is brought into contact with an object and hits a bottom wall closing one end of a cylindrical peripheral wall portion in a cup-shaped cup portion, and a conduction pin supported by the inspection jig body,
It is arranged between the pin body side of the liquid receiving portion and the holding position of the continuity inspection target in the inspection jig main body, and penetrates in the contact and separation direction of the contact end with respect to the continuity inspection target. A pin guide that is provided with a through hole that allows the pin body to pass therethrough, and that guides contact and separation of the contact end with respect to the continuity inspection target;
The pin guide is a cylinder extending from the inspection jig body toward the liquid receiving portion and having an outer diameter smaller than an outer diameter of the peripheral wall portion of the cup portion , and the conduction inspection of the conduction pin. A continuity inspection jig which guides the movement toward the target and regulates the movement when the cup portion comes into contact with the opening end portion on the side of the liquid receiving portion.

The piping, the direction of the liquid flowing through the inside, the direction when the liquid receiving portion contacts the contact end to the continuity test target, the switchable direction is the opposite direction,
The continuity test according to claim 1, wherein the pin body is separated from the continuity test target when the liquid flows in the pipe in the opposite direction and the liquid receiver is not pushed by the liquid. jig.

A continuity inspection device for performing continuity inspection of a continuity inspection target,
The continuity inspection jig according to claim 1 or 2,
A liquid tank for storing liquid,
By feeding the liquid in the liquid tank into the pipe while adjusting the pressure of the liquid, a flow of the liquid toward the continuity inspection target is generated inside the pipe, and the liquid is received via the liquid receiving portion. A liquid control means for bringing a contact end into contact with the continuity inspection target;
Continuity determination means for determining the continuity of the continuity inspection target through the conduction pin in a state where the pressure of the liquid is maintained after the liquid is fed into the pipe by the liquid control means. Continuity inspection device characterized by.

A continuity inspection method for performing continuity inspection of a continuity inspection target,
A holding step of holding the continuity inspection target in the inspection jig body,
A pin body having a contact end that can be brought into contact with and separated from the continuity inspection target, and the other end side of the pin body with respect to the contact end, which receives the liquid flowing inside the pipe to conduct the contact end to the conduction. A cup-shaped cup portion to be in contact with an inspection target has a liquid receiving portion that is a bottom wall that closes one end of a cylindrical peripheral wall portion, and uses a conduction pin that is supported by the inspection jig body. By feeding the liquid into the inside of the pipe while adjusting the, the flow of the liquid toward the continuity inspection target is generated inside the pipe, and the contact end is passed through the liquid receiving portion to the continuity inspection target. A liquid control step of contacting with
After the liquid is fed into the pipe by the liquid control step, in a state where the pressure of the liquid is maintained, a conduction determination step of determining conduction of the conduction inspection target through the conduction pin,
Between the pin body side of the liquid receiving portion and the holding position of the continuity inspection target in the inspection jig body, the pin main body is penetrated in the contact/separation direction of the contact end with respect to the continuity inspection target. Is provided with a through hole through which a pin guide for guiding contact and separation of the contact end with respect to the continuity inspection target is arranged,
The pin guide is a cylinder extending from the inspection jig body toward the liquid receiving portion and having an outer diameter smaller than an outer diameter of the peripheral wall portion of the cup portion. A pin guide guides the movement of the conduction pin toward the conduction inspection target, and regulates the movement when the cup portion comes into contact with the opening end portion on the liquid receiving portion side. Continuity inspection method.