Connector including conductive voltage detection terminal branching from conduction path

A connector includes: a casing that has a housing space, a through hole communicating the housing space with an external space, and an electric wire insertion hole, and that holds a connection terminal connected to a counterpart device; a wiring material that has a distal end part inserted into the housing space via the electric wire insertion hole and a conductor part exposed from a covering at the distal end part, the exposed conductor part being curved at a curved part and connected to the connection terminal; and a conductive voltage detection terminal that has a connection part connected to the exposed conductor part at a position closer to the covering than a curved part and a voltage detection part facing the through hole, and that is provided by branching from a conduction path between the connection terminal and the conductor part.

CROSS-REFERENCE TO RELATED APPLICATION(S)

The present application claims priority to and incorporates by reference the entire contents of Japanese Patent Application No. 2018-246785 filed in Japan on Dec. 28, 2018.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a connector.

2. Description of the Related Art

In a connector in which a terminal connected to a counterpart terminal and an end part of an electric wire connected to the terminal are housed in a casing, conduction confirmation and voltage measurement may be performed on a wiring material disposed in the casing via through holes formed in the casing. International Publication No. 2014-069285 discloses a technology for a connector in which a rear housing houses a terminal provided at an end of an electric wire, a front housing houses a counterpart terminal connected to the terminal, and the rear housing is provided with a confirmation window capable of confirming a voltage of the terminal and a waterproof lid that closes the confirmation window.

In accordance with the connector of International Publication No. 2014-069285, reliable waterproof performance is obtained and conduction confirmation and voltage measurement can be easily performed.

Meanwhile, in the connector, confirmation of a conductive state in the casing is performed via through holes formed in the casing. In such a case, in the connector, for example, there is a need for a configuration in which it is possible to easily perform the confirmation of the conductive state in the casing while ensuring more appropriate conduction characteristics of members between a connection terminal and a core wire of the electric wire.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a connector capable of easily confirming a conductive state in a casing while ensuring appropriate conduction characteristics.

In order to achieve the above mentioned object, a connector according to one aspect of the present invention includes a casing that has a housing space, a through hole communicating the housing space with an external space, and an electric wire insertion hole, and that holds a connection terminal connected to a counterpart device; a wiring material that has a distal end part inserted into the housing space via the electric wire insertion hole and a conductor part exposed from a covering at the distal end part, the exposed conductor part being curved at a curved part and connected to the connection terminal; and a conductive voltage detection terminal that has a connection part connected to the exposed conductor part at a position closer to the covering than the curved part and a voltage detection part facing the through hole, and that is provided by branching from a conduction path between the connection terminal and the conductor part.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Hereinafter, connectors according to embodiments of the present invention will be described in detail with reference to the drawings. It is noted that the invention is not limited by the embodiments. Constituent elements in the following embodiments include those that can be easily arrived at by a person skilled in the art or those that are substantially the same.

First Embodiment

With reference toFIG. 1toFIG. 9, an embodiment will be described. An embodiment relates to a connector. FIG.1is a perspective view illustrating a connector according to a first embodiment.FIG. 2is a perspective view illustrating the connector according to the first embodiment.FIG. 3is a sectional view illustrating the connector according to the first embodiment.FIG. 4is an exploded perspective view illustrating the connector according to the first embodiment.FIG. 5is a perspective view illustrating a terminal according to the first embodiment.FIG. 6is a perspective view illustrating a voltage detection terminal according to the first embodiment.FIG. 7is a perspective view illustrating the voltage detection terminal according to the first embodiment.FIG. 8is a perspective sectional view illustrating the connector according to the first embodiment.FIG. 9is a sectional view illustrating the connector according to the first embodiment.FIG. 3is a section taken along line III-III illustrated inFIG. 1. Furthermore,FIG. 9is a section taken along line IX-IX illustrated inFIG. 1. Furthermore,FIG. 8is a perspective sectional view corresponding to the section illustrated inFIG. 3.

A connector1according to the present embodiment is physically and electrically connected to a connector (counterpart connector) of a counterpart device to be fitted. Hereinafter, in the specification, a direction in which the connector1is inserted into and removed from the counterpart connector is referred to as a “front and rear direction X”, a direction perpendicular to the front and rear direction X is referred to as a “width direction Y”, and a direction perpendicular to each of the front and rear direction X and the width direction Y is referred to as a “height direction Z”. Furthermore, in relation to the connector1, a side connected to the counterpart connector in the front and rear direction X is referred to as a “front side” and a side opposite to the front side is referred to as a “rear side”.

As illustrated inFIG. 1toFIG. 3, the connector1includes a casing10, covered electric wires20, a voltage detection terminal30, and connection terminals40.

The casing10is a box-shaped member that houses the connection terminals40and a terminal of the covered electric wires20therein. The casing10is formed of an insulating resin material. The casing10has an electric wire housing part10aand a terminal housing part10b. The electric wire housing part10ais a part that houses a distal end part20aof the covered electric wire20, and the terminal housing part10bis a part that houses the connection terminals40and is fitted to the counterpart connector.

As illustrated inFIG. 1andFIG. 2, the electric wire housing part10aof the embodiment is formed in a rectangular parallelepiped box shape with the height direction Z as a longitudinal direction. The length of the electric wire housing part10ain the front and rear direction X is formed to be smaller than that of the electric wire housing part10ain the width direction Y. As illustrated inFIG. 3, a first opening10hais formed in a wall part10saon the front side of the electric wire housing part10ain the front and rear direction X. The first opening10haof the embodiment is formed in a circular shape in the central vicinity of the wall part10sa.

As illustrated inFIG. 1, the terminal housing part10bis formed in a cylindrical shape. The terminal housing part10bprotrudes toward the front side in the front and rear direction X from the wall part10saof the electric wire housing part10aso as to surround the first opening10haof the electric wire housing part10a. A space surrounded by the electric wire housing part10aand a space surrounded by the terminal housing part10bcommunicate with each other via the first opening10ha. In the casing10, the space surrounded by the electric wire housing part10aand the space surrounded by the terminal housing part10bconstitute a housing space SP of the casing10. The housing space SP is a space that houses the distal end part20aof the covered electric wire20, the voltage detection terminal30, the connection terminals40, and the like.

The casing10has through holes10hband electric wire insertion holes10hc. In the embodiment, the through holes10hband the electric wire insertion holes10hcare formed in the electric wire housing part10a. The through holes10hbconnect the housing space SP with an external space. The through hole10hbis a hole into which a voltage detection probe P1to be described below is inserted. The through holes10hbare formed in one wall part10sbof two wall parts10sband10scof the electric wire housing part10a, which face each other in the height direction Z. The electric wire insertion hole10hcis a hole into which the distal end part20aof the covered electric wire20to be described below is inserted. The electric wire insertion holes10hcare formed in the other wall part10scof the two wall parts10sband10scof the electric wire housing part10a. The through holes10hband the electric wire insertion holes10hcare located at substantially the same positions in the width direction Y. Furthermore, in the front and rear direction X, the through holes10hbare located in front of the electric wire insertion holes10hc.

As illustrated inFIG. 4, the casing10of the embodiment has a division structure divided into two casing members (a first casing member11and a second casing member12), and is formed in a box shape by assembling the first casing member11and the second casing member12.

The first casing member11includes a part of the electric wire housing part10aand the terminal housing part10b, and the second casing member12includes the other part of the electric wire housing part10a. Here, the first casing member11includes the wall part10sa, the wall part10sb, a front portion of the wall part10sc, and a pair of wall parts10sdand10sefacing each other in the width direction Y, which constitute the electric wire housing part10a. The rear side of the first casing member11is an opening (second opening10hd) and the first casing member11is formed in a cylindrical shape with the front and rear direction X as an axial direction. The aforementioned through holes10hbare provided in the first casing member11.

The second casing member12includes a rear portion of the wall part10scand a wall part10sffacing the wall part10sa, which constitute the electric wire housing part10a. The second casing member12is a lid-shaped member that closes the second opening10hdof the first casing member11. The second casing member12is assembled to the first casing member11so as to close the second opening10hdfrom the rear side with respect to the first casing member11, thereby constituting the casing10together with the first casing member11. As a consequence, a space surrounded by the first casing member11and the second casing member12serves as the housing space SP. In such a case, the aforementioned electric wire insertion holes10hcare formed between a part of the front portion of the wall part10scand a part of the rear portion of the wall part10sc.

The connector1of the present embodiment further includes waterproof packings51. In a state in which the waterproof packings51have been attached to the covered electric wire20, the waterproof packings51is interposed in a gap between the first casing member11and the second casing member12, thereby suppressing liquid such as water from entering the housing space SP from the external space. The waterproof packing51is formed with an insertion hole51a. The waterproof packing51is formed in a cylindrical shape surrounding the insertion hole51a. The shape and the size of the insertion hole51ain the waterproof packing51are set to correspond to those of the covered electric wire20. The covered electric wire20is attached to the waterproof packing51by being inserted into the insertion hole51a. The waterproof packing51is disposed on the wall part10scin the second opening10hdinside the first casing member11. Here, the waterproof packing51is disposed such that the insertion hole51aand the electric wire insertion hole10hccommunicate with each other. The waterproof packing51suppresses liquid from entering the housing space SP from a gap between the covered electric wire20and the electric wire insertion hole10hcand a gap between the first casing member11and the second casing member12in the wall part10sc. In the covered electric wire20has been inserted into the insertion hole51a, the covered electric wire20is disposed between the first casing member11and the second casing member12together with the waterproof packing51(seeFIG. 4). Then, by assembling the first casing member11and the second casing member12, the covered electric wire20is inserted into the electric wire insertion hole10hcand disposed in the housing space SP. As a consequence of the assembling, between the first casing member11and the second casing member12, the waterproof packing51suppresses liquid such as water from entering the housing space SP from the external space. In the embodiment, two electric wire insertion holes10hcare formed in the wall part10sc, and the covered electric wires20are inserted into the two electric wire insertion holes10hc, respectively. One waterproof packing51is attached to each of the covered electric wire20.

In the embodiment, the covered electric wire20constitutes a wiring material W of the connector1. The covered electric wire20includes a core wire21and a covering22. The core wire21constitutes a conductor part C in the wiring material W. As illustrated inFIG. 3, the distal end part20aof the covered electric wire20is inserted into the housing space SP via the electric wire insertion hole10hc. At the distal end part20aof the covered electric wire20, an end of the core wire21is exposed from the covering22. A part (curved part21aa) of the end (core wire exposed part21a) of the core wire21, which is exposed from the covering22, is curved and connected to the connection terminal40housed in the terminal housing part10b. A portion21abof the core wire exposed part21a, which is closer to the covering22than the curved part21aa, extends along the height direction Z, and a portion21acof the core wire exposed part21a, which is closer to the connection terminal40than the curved part21aa, extends along the front and rear direction X.

Before describing the voltage detection terminal30, the connection terminal40will be described first.

The connection terminal40is housed in the terminal housing part10bof the casing10. When the terminal housing part10bis fitted to a counterpart connector, the connection terminal40is electrically connected to a terminal of the counterpart connector. As illustrated inFIG. 5, the connection terminal40of the present embodiment is a female connection terminal. The connection terminal40has a terminal connection part41and a crimping part42.

The terminal connection part41is a part connected to the terminal of the counterpart connector. The terminal connection part41is formed in a cylindrical shape. The terminal connection part41has the indentation41aformed thereon, the indentation41aserving as a contact point with the terminal of the counterpart connector. The crimping part42is a part that is electrically connected to the core wire exposed part21a. The crimping part42extends from a rear end part of the connection terminal40in the front and rear direction X. When the connection terminal40before being connected to the core wire exposed part21ais viewed from the front and rear direction X, the crimping part42is formed in a U shape. The core wire exposed part21ais disposed inside the U-shaped part of the crimping part42, is caulked together with the crimping part42, and thus is connected to the connection terminal40(seeFIG. 7).

The connector1of the present embodiment further includes an inner housing60and a front holder70. The connection terminals40are supported in the housing space SP inside the terminal housing part10bin a state of being housed in the inner housing60. Furthermore, the connection terminals40are held in the housing space SP together with the inner housing60by the front holder70attached to a rear end portion of the terminal housing part10bin the front and rear direction X. With such a configuration, the position of the connection terminal40in the housing space SP is restricted.

The voltage detection terminal30is a conductive terminal member for confirming a conductive state between the covered electric wire20and the connection terminal40in the housing space SP of the casing10. As illustrated inFIG. 6, the voltage detection terminal30has a connection part31, a voltage detection part32, a bending part33, and an extension part34. In the voltage detection terminal30, the connection part31, the bending part33, the extension part34, and the voltage detection part32are arranged in this order from one side to the other side along the height direction Z and are integrally formed with one another.

The connection part31is a part connected to the core wire21of the covered electric wire20. As illustrated inFIG. 3, the connection part31is connected to the core wire exposed part21aat a position closer to the covering22than the curved part21aa. That is, the connection part31is connected to the portion21abof the core wire exposed part21a. The connection part31of the present embodiment has an intermediate portion31aand a pair of barrel piece portions31band31c. The barrel piece portion31bprotrudes from one end portion of the intermediate portion31ain the width direction Y. Furthermore, the barrel piece portion31cprotrudes from the other end portion of the intermediate portion31ain the width direction Y. The intermediate portion31aand the pair of barrel piece portions31band31care wound around and crimped to the portion21abof the core wire exposed part21a(seeFIG. 7). The connection part31is crimped to the portion21abof the core wire exposed part21a, so that the voltage detection terminal30and the core wire21are electrically connected to each other.

The voltage detection part32is a part that comes into contact with the voltage detection probe P1when a conductive state in the casing10is confirmed. The voltage detection part32is electrically connected to the core wire exposed part21avia the extension part34, the bending part33, and the connection part31. As illustrated inFIG. 8, the voltage detection part32is disposed at a position facing the through hole10hb. The voltage detection part32of the embodiment is formed in a plate shape having two main surfaces. One of the two main surfaces of the voltage detection part32is disposed toward the through hole10hb.

The bending part33is provided between the connection part31and the extension part34. In the voltage detection terminal30, the bending part33is a part that is bent in a direction away from the core wire21. The bending part33extends along the height direction Z from an end portion of the connection part31, which faces the through hole10hb. The bending part33is inclined such that a portion farther from the connection part31is located on the rear side. In the present embodiment, the bending part33extends from the end portion of the intermediate portion31a, which faces the through hole10hb(seeFIG. 6).

The extension part34is provided between the bending part33and the voltage detection part32. The extension part34extends along an insertion direction (height direction Z) of the covered electric wire20from an end portion of the bending part33opposite to the connection part31side. The extension part34extends to a position closer to the first opening10hathan the curved part21aain the height direction Z. The voltage detection part32extends toward the front side from an end portion of the extension part34opposite to the bending part33side. That is, a part including the voltage detection part32and the extension part34of the voltage detection terminal30is formed in an inverted L shape when viewed from the width direction Y. The voltage detection part32extends to a position in front of the through hole10hbin the front and rear direction X.

The voltage detection terminal30configured as described above extends along the height direction Z corresponding to the insertion direction of the covered electric wire20(wiring material W) with respect to the casing10and is supported on the core wire21(conductor part C) in a cantilever manner in the state of being connected to the core wire21of the covered electric wire20via the connection part31. Furthermore, the voltage detection terminal30is provided by branching from a conduction path between the connection terminal40and the core wire21. The voltage detection terminal30of the present embodiment branches from the conduction path between the connection terminal40and the core wire21with a connection point between the core wire21and the connection part31as a branch point.

In the case of confirming the conductive state in the casing10, a worker brings the voltage detection probe P1into contact with the voltage detection part32via the through hole10hb. The voltage detection probe P1comes into contact with the voltage detection part32, so that it is possible to confirm the conductive state in the casing10. In the confirmation of the conductive state by the voltage detection probe P1, for example, a current value, a voltage value, and the like of power flowing between the connection terminal40and the core wire21are detected.

As illustrated inFIG. 9, the casing10further has a restriction wall part13that restricts the voltage detection terminal30from vibrating in a direction (for example, the front and rear direction X or the width direction Y) intersecting the insertion direction of the covered electric wire20. The restriction wall part13of the present embodiment includes a first restriction wall part13aand a second restriction wall part13b.

The first restriction wall part13ais a wall part that protrudes toward the extension part34from the wall part10saof the first casing member11. In the height direction Z, the first restriction wall part13ais located between the core wire21and the voltage detection part32and is formed in a rectangular plate shape with the front and rear direction as the longitudinal direction. The first restriction wall part13acomes into contact with the extension part34when the voltage detection terminal30tries to vibrate in the front and rear direction X with respect to the casing10. As a consequence, the first restriction wall part13arestricts the voltage detection terminal30from moving relative to the front side in the front and rear direction X with respect to the casing10.

The second restriction wall part13bis formed in a surface facing the voltage detection terminal30in the wall part10sf. The second restriction wall part13bis a wall part formed in a groove shape extending along the height direction Z and includes a bottom wall surface13baand a pair of side wall surfaces13bband13bc. The bottom wall surface13bais a wall surface facing the voltage detection terminal30in the front and rear direction X and the pair of side wall surfaces13bband13bcare wall surfaces facing each other in the width direction Y. In the width direction Y, the bottom wall surface13bais located between the side wall surface13bband the side wall surface13bc. In the width direction Y, a width between the side wall surface13bband the side wall surface13bcis set to be slightly wider than that of the extension part34in the width direction Y. The extension part34of the present embodiment extends through a space surrounded by the groove-shaped second restriction wall part13bin the height direction Z. The pair of side wall surfaces13bband13bcof the second restriction wall part13bcomes into contact with the extension part34when the voltage detection terminal30tries to vibrate in the width direction Y with respect to the casing10. As a consequence, the second restriction wall part13brestricts the vibration of the voltage detection terminal30in the width direction Y. Furthermore, the bottom wall surface13baof the second restriction wall part13bcomes into contact with the extension part34when the voltage detection terminal30tries to move rearward relative to the casing10. As a consequence, the second restriction wall part13brestricts the voltage detection terminal30from moving rearward relative to the casing10.

As described above, the connector1according to the present embodiment includes: the casing10that has the housing space SP, the through hole10hbcommunicating the housing space SP with the external space, and the electric wire insertion hole10hc, and that holds the connection terminal40connected to the counterpart device; the wiring material W that has the distal end part20ainserted into the housing space SP via the electric wire insertion hole10hc, and the conductor part C exposed from the covering22at the distal end part20a, the exposed conductor part C being curved at the curved part21aaand connected to the connection terminal40; and the conductive voltage detection terminal30that has the connection part31connected to the exposed conductor part C at a position closer to the covering22than the curved part21aaand the voltage detection part32facing the through hole10hb, and that is provided by branching from a conduction path R1between the connection terminal40and the conductor part C.

As a comparative example of the present embodiment, there is conceived a configuration in which the voltage detection terminal is provided between a wiring connected to the connection terminal and the core wire and the through hole is formed in a part of the casing, which faces the voltage detection terminal. In such a configuration, for example, a resistance value between the connector and the core wire may increase due to contact resistance between the wiring and the voltage detection terminal, contact resistance between the voltage detection terminal and the core wire, and the like. On the other hand, the connector1according to the present embodiment includes the conductive voltage detection terminal30having the connection part31connected to the exposed core wire21at a position closer to the covering22than the curved part21aaof the core wire21and the voltage detection part32facing the through hole10hb. The voltage detection terminal30is provided by branching from the conduction path R1between the connection terminal40and the conductor part C. With such a configuration, the voltage detection probe P1is brought into contact with the voltage detection part32from the through hole10hb, so that it is possible to easily confirm the conductive state in the casing10. Furthermore, since the voltage detection terminal30is provided by branching from the conduction path R1between the connection terminal40and the conductor part C, it is possible to provide the voltage detection terminal30without increasing the number of connection points between members between the connection terminal40and the conductor part C. Consequently, the connector1according to the present embodiment has an effect that it is possible to confirm the conductive state in the casing10while ensuring appropriate conduction characteristics. For example, it is possible to easily confirm the conductive state in the casing10while suppressing an increase in the resistance value between the connection terminal40and the core wire21.

Furthermore, in the voltage detection terminal30of the present embodiment, the casing10has the through hole10hband the voltage detection part32faces the through hole10hb. The voltage detection probe P1is brought into contact with the voltage detection part32from the through hole10hb, so that it is possible to easily confirm the conductive state in the casing10.

Furthermore, in the configuration of the comparative example, when the voltage detection terminal is attached to the connection terminal side other than a part corresponding to the curved part21aa, since load is applied to a contact point between the connection terminal and the terminal of the counterpart connector, an anti-vibration property may deteriorate. In the present embodiment, the connection part31is connected to the core wire exposed part21aat a position closer to the covering22than the curved part21aa, so that it is possible to reduce the load applied to the contact point between the connection terminal40and the terminal of the counterpart connector. Consequently, it is possible to improve the anti-vibration performance of the connector1. Also in this aspect, the connector1according to the present embodiment has an effect that it is possible to confirm the conductive state in the casing10while ensuring appropriate conduction characteristics.

Furthermore, in the connector1according to the present embodiment, the voltage detection terminal30has the bending part33between the connection part31and the voltage detection part32, the bending part33being bent in a direction away from the core wire21. The voltage detection terminal30has the bending part33, so that, for example, when the connection terminal40is connected to the terminal of the counterpart connector, it is possible to ensure a space where the core wire21(the core wire exposed part21a) can be bent rearward. With such a configuration, the bending part33can serve as a cross-absorption part that absorbs positional tolerance of the core wire21with respect to the voltage detection terminal30.

Furthermore, in the connector1according to the present embodiment, the voltage detection terminal30extends along the insertion direction of the wiring material W with respect to the casing10and is supported on the conductor part C in a cantilever manner, and the casing10has the restriction wall part13that restricts the voltage detection terminal30from vibrating in a direction intersecting the insertion direction. The restriction wall part13restricts the voltage detection terminal30from vibrating in the direction intersecting the insertion direction of the covered electric wire20, so that it is possible to improve the anti-vibration performance of the connector1.

Furthermore, in the connector1according to the present embodiment, the wiring material W is the covered electric wire20and the exposed conductor part C is the core wire21(the core wire exposed part21a) of the covered electric wire20. The connection terminal40and the core wire21are directly connected to each other, so that it is possible to provide the voltage detection terminal30without increasing the number of connection points between members between the connection terminal40and the core wire21.

Second Embodiment

With reference toFIG. 10, a second embodiment will be described. The present embodiment relates to a connector. In the present embodiment, constituent elements having functions similar to those described in the aforementioned first embodiment are denoted by the same reference numerals and a redundant description thereof will be omitted.FIG. 10is a sectional view illustrating a connector according to the second embodiment. Furthermore,FIG. 10is a sectional view corresponding toFIG. 3of the aforementioned first embodiment.

The wiring material W of the present embodiment includes the covered electric wire20and a braided body80. The core wire21of the covered electric wire20and the braided body80constitute a conductor part in the wiring material W. The braided body80is the conductor part C exposed from the covering22of the covered electric wire20. As illustrated inFIG. 10, in the connector1according to the present embodiment, the braided body80having conductivity is provided between the core wire21and the connection terminal40.

The braided body80is formed by braiding a braided body composed of a plurality of metal wires into a mesh shape and has flexibility. The braided body80of the embodiment has higher flexibility than the core wire21. The core wire21and the connection terminal40are electrically connected to each other via the braided body80. The core wire21extends along the insertion direction (height direction Z) of the covered electric wire and one end of the braided body80is connected to an end part of the core wire21. Furthermore, the braided body80is connected to the connection terminal40by curving a part (curved part50a) between an end part on the core wire21side and an end part on the connection terminal40side. In the present embodiment, the voltage detection terminal30is connected to the core wire21while fixing the core wire21exposed by the connection part31and the braided body80. In the conductor part C, the core wire21and the braided body80directly come into contact with each other. The connection part31of the voltage detection terminal30is crimped to a contact part between the core wire21and the braided body80. With such a configuration, the core wire21and the braided body80are fixed in the connected state. Since the core wire21and the braided body80are directly connected to each other, the voltage detection terminal30is provided by branching from the conduction path R1.

As described above, in the connector1according to the present embodiment, the wiring material W includes the covered electric wire20and the braided body80, the exposed conductor part C is the braided body80connected to the core wire of the covered electric wire20, and the connection part31fixes the core wire21and the braided body80.

In the connector1according to the present embodiment, the core wire21and the connection terminal40are connected to each other by the braided body80. By using the braided body80having higher flexibility than that of the core wire21, the covered electric wire20can be easily attached to the casing10. In addition, the connector1can easily perform voltage detection via the voltage detection terminal30connected so as to branch from the braided body80constituting the conductor part C of the wiring material W. Consequently, the connector1according to the present embodiment can achieve a good balance between ease of attachment to the casing and appropriate conduction characteristics. In addition, it is possible to confirm the conductive state in the casing10.

Furthermore, similarly to the aforementioned first embodiment, the voltage detection probe P1is brought into contact with the voltage detection part32from the through hole10hb, so that it is possible to easily confirm the conductive state in the casing10.

In addition, the connector according to each of the aforementioned embodiments of the present invention is not limited to each of the aforementioned embodiments and various modifications can be made within the scope of the claims.

For example, in the aforementioned first embodiment, the configuration in which the voltage detection terminal30includes the bending part33and the extension part34between the connection part31and the voltage detection part32has been described as an example. However, the configuration of the voltage detection terminal30is not limited thereto. For example, in the voltage detection terminal30, the connection part31and the voltage detection part32may also be connected to each other only via the extension part34. That is, the voltage detection terminal30may not be provided with the bending part33.

Furthermore, in the aforementioned first embodiment, the configuration in which the casing10has the restriction wall part13has been described as an example. However, the configuration of the casing10is not limited thereto. For example, the casing10may not have the restriction wall part13.

The contents disclosed in the aforementioned embodiments and modification example can be implemented by an appropriate combination.

The connector according to the present embodiments include the conductive voltage detection terminal having the connection part connected to the exposed conductor part at a position closer to the covering than the curved part of the conductor part and the voltage detection part facing the through hole. Furthermore, the voltage detection terminal is provided by branching from the conduction path between the connection terminal and the conductor part. With such a configuration, the connector according to the present embodiments have an effect that it is possible to easily confirm a conductive state in the casing while ensuring appropriate conduction characteristics.