JP5478665B2 - connector - Google Patents

Description

  The present invention relates to a connector having terminals for electrical connection inside a metal sleeve-like body.

  For example, in a connector provided at the end of an electric cable such as a power supply cable for supplying power from a land-side power source to an inboard power supply package mounted on a ship, the cable is placed inside the tip of the metal sleeve-shaped body. There is a configuration in which a terminal pin to which the conductor is attached is incorporated.

FIG. 13 shows an example of this type of connector.
In FIG. 13, the connector 110 has a configuration in which a plurality of terminal pins 112 are incorporated inside the front end portion of a metal sleeve-like body 111. The connector 110 in the illustrated example is assembled to a terminal portion of an electric cable 130 that is inserted into the body 111 from the rear side.
The electric cable 130 is a multi-core metal cable in which a plurality of inner cables 133 whose conductors are covered with a sheath are covered with an outer jacket 134 at once. The terminal pin 112 of the connector 110 is electrically connected to the conductor of the inner cable 133 attached to the rear end thereof.

  As shown in FIG. 14, the connector 110 is a plug connector that is connected to the receiving-side connector 120 by inserting the front end portion of the body 111 into the fitting cylinder portion 121 of the receiving-side connector 120. is there. In this connector 110, when the front end portion of the body 111 is inserted and fitted into the fitting cylinder portion 121 of the receiving connector 120, the terminal pin 112 is fixed inside the fitting cylinder portion 121 of the receiving connector 120. The cylindrical terminal 122 is inserted and fitted. As a result, the electric circuit 123 such as a power feeding circuit that is electrically connected to the cylindrical terminal 122 of the receiving connector 120 and the conductor of the electric cable 130 are electrically connected.

As shown in FIG. 13, the body 111 of the connector 110 has a configuration in which a front ring member 115 is externally fixed to a front end portion of a sleeve-shaped body member 114. The front ring member 115 of the body 111 in the illustrated example has a flange portion 116 projecting from the outer end thereof at a position slightly shifted rearward from the front end of the body member 114 at the rear end portion extrapolated to the front end portion of the body member 114. Is attached to the body member 114 by being fastened and fixed to the flange portion 116 with bolts 117. For example, four positions in the circumferential direction of the rear end portion of the body member 114 are fixed to the flange portion 116 using bolts 117.
Bolt holes 116 a are formed in the flange portion 116 of the body member 114 so as to penetrate the flange portion 116 in the front-rear direction of the body member 114. The front ring member 115 is formed with a female screw hole 115a that is recessed from the rear end surface. The front ring member 115 is screwed into the female screw hole 115a of the front ring member 115 by tightening the screw shaft portion 117a of the bolt 117 that is passed through the bolt hole 116a from the rear side of the flange portion 116 of the trunk member 114. The member 114 is fastened and fixed.
Further, an O-ring 118 is provided between the rear end portion of the front ring member 115 and the front end portion of the body member 114 to prevent water from entering the body 111 from the boundary between the rear end portion of the front ring member 115 and the body member 114. ing.

  In addition, as a technique using a power supply cable with a connector to supply power from the land-side power source to the inboard power supply package, for example, there is Patent Document 1 below.

JP 2009-23579 A

Incidentally, the front ring member 115 and the body member 114 constituting the body 111 of the connector 110 are generally formed of a conductive metal material such as an aluminum alloy. Further, the front ring member 115 and the body member 114 are subjected to a surface treatment such as alumite treatment or painting in order to ensure corrosion resistance. For this reason, the front ring member 115 and the trunk member 114 are unlikely to have the same potential unless there is a separate means for ensuring electrical connection.
In the connector 110 described above, the front ring member 115 and the body member 114 are electrically connected via the bolt 117. The bolt 117 is a washer-attached bolt in which a washer portion 117c is integrally formed with a head portion 117b from which a screw shaft portion 117a is projected. The inner surface of the bolt hole 116 a of the flange portion 116 of the trunk member 114 is subjected to the same surface treatment as the outer surface of the trunk member 114. The inner surface of the female screw hole 115a of the front ring member 115 is not subjected to corrosion-resistant surface treatment, and the metal material forming the front ring member 115 is exposed. When the bolt 117 is screwed into the female screw hole 115a of the front ring member 115 and the screw shaft portion 117a passed through the bolt hole 116a of the flange portion 116 of the barrel member 114 is tightened, the washer portion 117c is the surface of the flange portion 116 of the barrel member 114. The corrosion-resistant surface layer portion is scraped and brought into contact with the forming metal material of the barrel member 114 so as to be electrically connected to the barrel member 114. The bolt 117 is also electrically connected to the front ring member 115 by screwing the screw shaft portion 117a to the female screw portion on the inner periphery of the female screw hole 115a. Therefore, the front ring member 115 and the body member 114 fastened and fixed using the bolt 117 are electrically connected via the bolt 117.

  However, in the configuration in which the washer portion 117c scrapes off the corrosion-resistant surface layer portion on the surface of the flange portion 116 of the body member 114 and contacts the metal material forming the body member 114, the electrical connection between the bolt 117 and the body member 114 is incomplete. Occasionally, improvements were necessary to ensure electrical connections. In addition, in a state where the front ring member 115 and the trunk member 114 are electrically connected only through the bolt 117, depending on the use environment, the front ring member 115 and the trunk member 114 are insulated by electric corrosion or the like, There is a possibility that a high voltage is induced on the surface of the body member 114.

  In view of the above circumstances, an object of the present invention is to provide a connector capable of reliably grounding a front ring member and a body main body without being influenced by a use environment.

In order to solve the above problems, the present invention provides the following configuration.
The first invention is electrically connected to the conductor of the cable inserted from the rear side of the body having a sleeve-shaped main body portion and a front ring member that is externally fixed to the front end portion thereof, A terminal that contacts the terminal of the mating connector that fits the front end of the body is incorporated, and the main body trunk and the front ring member are electrically connected between the main body trunk and the front ring member. Provided is a connector provided with a conductive contact.
According to a second aspect of the present invention, the main body body and the front ring member are formed by forming an electrically insulating and corrosion-resistant surface layer on a conductive metal member, and the main body body and the front ring member face each other. A connector according to the first invention is provided in which a non-formed portion of the corrosion-resistant surface layer portion is secured at a position, and the contact is in contact with an exposed surface of the conductive metal member exposed to the non-formed portion.
A third invention is a connector according to the first or second invention, wherein the contact is a spring member formed of a conductive metal, and is brought into contact with the main body barrel and the front ring member with an elastic biasing force. I will provide a.
4th invention is the invention any one of 1st-3rd in which the said contactor is formed in the ring shape interposed over the circumferential direction perimeter between the said main body trunk | drum and the said front side ring member. Provide connectors.
A fifth invention provides the connector according to the first or second invention, wherein the contact is a conductive waterproof O-ring.
6th invention is any one of the 1st-5th which further has the O-ring for waterproofing arrange | positioned from the said contactor to the rear end exposed part side of the boundary part of the said main body trunk | drum and the said front side ring member. An inventive connector is provided.
According to a seventh aspect of the present invention, the front ring member has a grounding wire mounting portion for electrically connecting a grounding wire drawn from the rear side to the main body to the inside of a portion protruding from the front end of the main body to the front. The connector according to any one of the first to sixth aspects of the present invention is provided.

  According to the present invention, the electrical connection between the main body body and the front ring member can be reliably ensured through the contact. For this reason, a main body trunk | drum and a front side ring member can be made into the same electric potential, a main body trunk | drum and a front side ring member can be earth | grounded reliably, and the voltage induction of the main body trunk | drum surface can be prevented.

It is a perspective view showing the appearance structure of the connector of one embodiment of the present invention. It is a figure explaining the external appearance structure of the connector of FIG. 1, (a) is a top view, (b) is a front view which shows the structure seen from the front side, (c) is a side view, (d) is from a rear side The figure which shows a structure, (e) is a bottom view. FIG. 2 is a cross-sectional view showing the structure of the connector of FIG. 1 (however, the structure of the connector in a temporarily assembled state that is not assembled to a cable). It is a partially broken principal part enlarged plan view explaining the structure of the bolt fastening part of the main body trunk | drum and front side ring member in the connector of FIG. It is a perspective view explaining an example of the ground pin contactor of the connector of FIG. It is a figure explaining the structure of the front-end part of the main body trunk | drum of the connector of FIG. 1, (a) is a perspective view, (b) is a side view. It is a perspective view explaining an example of the contact (body contact) of the connector of FIG. It is a principal part expanded sectional view explaining the structure of the contactor (body contactor) vicinity of the connector of FIG. It is sectional drawing explaining the state which assembled the connector of FIG. 1 to the front-end | tip part of a cable. It is a principal part expanded sectional view explaining an example of the structure of the connector using the contact (body contact) of another aspect which concerns on this invention. It is a principal part expanded sectional view explaining an example of the structure of the connector using an electroconductive O-ring as a contact (body contact) of another aspect which concerns on this invention. The structure interposed between making it contact with the front side ring member extrapolated by the main body trunk | drum is shown. It is a figure explaining the relationship between the connector of FIG. 1, and a receiving side connector. It is a principal part expanded sectional view explaining the structure of the connector of a prior art example. It is a figure explaining the relationship between the connector of FIG. 13, and a receiving side connector.

Hereinafter, a connector according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the connector 10 has a pin support in which a plurality of terminal pins 12 (terminals, connection terminals) are attached to an electrically insulating pin support member 16 inside a front end portion of a sleeve-like body 11. The unit 25 and the ground pin 13 are incorporated in a schematic configuration. In addition, the connector 10 is interposed between the body main body 14 and the front ring member 15 constituting the body 11 to provide electrical continuity (electrical connection) between the body main body 14 and the front ring member 15. It also has the body part contactor 18 (refer FIG. 3) to ensure.

As shown in FIG. 9, the connector 10 is assembled at the distal end portion of the cable 50 inserted into the body 11 from the rear side.
For example, as shown in FIG. 3, the connector 10 is assembled in a state in which an electric cable 50 (hereinafter also simply referred to as a cable) is not inserted into the body 11 (hereinafter also referred to as a temporarily assembled state), that is, assembled at the distal end portion of the cable 50. In this state, it can be supplied (loaded) to the site and assembled to the tip of the cable 50 as illustrated in FIG.

  As a specific application, the connector 10 described here is assembled at the tip of a power supply cable (electric cable 50) for supplying power from a land-side power source to an inboard power supply package mounted on a ship, for example. The base end portion of the cable 50 is electrically connected to the inboard power supply package. As shown in FIG. 12, the connector-attached cable 50 </ b> A in which the connector 10 is assembled at the distal end portion of the cable 50 electrically connects the connector 10 via a land power supply device 64 (land-side power supply device) and an electric circuit 63. The terminal (cylindrical terminal 62) connected to the power supply device 64 is electrically connected to the receiving side connector 60 by fitting and connecting to the receiving side connector 60, and the land side power supply device 64 is connected to the inboard power supply package. Used for power supply.

The body 11 of the connector 10 includes a body main body 14 having a sleeve-like (cylindrical in the illustrated example) body 14a, and a front end portion of the body 14a of the body main body 14 (hereinafter also referred to as a body body) (see FIG. 2 (a), (c), (e), the front ring member 15 with a cylindrical ring main body 15r extrapolated and fixed to the rear end of the main body trunk portion 14a. The ring-shaped rear end nut member 20 is detachably provided.
The body main body 14, the front ring member 15, and the rear end nut member 20 are made of a conductive metal such as an aluminum alloy, for example. Further, the body main body 14 and the front ring member 15 are subjected to surface treatment such as alumite treatment or painting to ensure corrosion resistance, and an electrically insulating and corrosion-resistant surface layer portion is provided over almost the entire surface (member surface). Have.

The body main body 14 has a corrosion-resistant surface layer portion on the entire surface of the member other than the inner surface of the contact receiving groove 14f (see FIG. 8, described later) at the front end portion.
The entire inner surface of the bolt hole 14c for passing the bolt 17 (see FIG. 4, which will be described later) for fixing the front ring member 15 of the body main body 14 is also formed of a corrosion-resistant surface layer portion.
A conductive metal portion (hereinafter also referred to as a main body conductor metal portion) forming the body main body 14 is exposed on the inner surface of the contact housing groove 14f.
The front ring member 15 has an inner surface of a ground pin insertion hole 15e (see FIG. 5B) formed in the front ring member 15 and a contact receiving groove 14f of the body main body 14 on the surface (member surface). It has a corrosion-resistant surface layer on the whole other than the facing part (conductor metal exposed surface 15g in FIG. 8) and the inner surface of the female screw hole 15a (see FIG. 4) into which the bolt 17 is screwed. A conductive metal portion forming the front ring member 15 (hereinafter also referred to as a ring member conductor metal portion) on the inner surface of the ground pin insertion hole 15e, the portion facing the contact receiving groove 14f of the body main body 14, and the inner surface of the female screw hole 15a. Is exposed.

The rear end nut member 20 has an electrically insulating and corrosion-resistant surface layer portion on the entire surface (member surface). The rear end nut member 20 and the body main body 14 are electrically insulated.
However, as the connector according to the embodiment of the present invention, for example, a female screw portion 20c inside the ring-shaped nut portion 20a of the rear end nut member 20 and a rear end portion outer periphery of the main body trunk portion 14a in which the female screw portion 20c is screwed. It is also possible to adopt a configuration in which the conductive metal portions exposed to the male screw portion 14i are in contact with each other and the rear end nut member 20 is electrically connected to the body main body 14.

The cable 50 is often used at a high voltage for power supply.
The connector 10 has handles 14d that protrude from both sides of the outer periphery of the main body barrel portion 14a of the body 11 in order to ensure handling.

  As shown in FIG. 3, the body main body 14 of the body 11 in the illustrated example is protruded (circularly provided) on the outer periphery of the front end portion of the main body trunk portion 14 a at a position slightly shifted from the front end (left end in FIG. 3). And a flange portion 14b. The front ring member 15 has a configuration in which a ground pin fixing portion 15d to which a ground pin 13 is attached protrudes from the inside of a cylindrical ring body 15r.

  As shown in FIGS. 2 (a), (c), (d), and FIG. 3, the front ring member 15 is ringed to the front end cylinder portion 14e that is a portion protruding forward from the flange portion 14b of the main body barrel portion 14a. The body 15r is extrapolated and attached to the body body 14. The front ring member 15 has a rear end of the ring main body 15r that is extrapolated to the front end cylindrical portion 14e of the main body barrel portion 14a and a front side thereof (see FIGS. 2A, 2C, and 2D). 3), and the rear end of the ring main body 15r is fastened and fixed to the flange portion 14b with bolts 17 and attached to the body main body 14.

  As shown in FIG. 3, the ring main body 15r of the front ring member 15 attached to the body main body 14 protrudes forward from the front end of the main body trunk portion 14a. The ground pin fixing portion 15d of the front ring member 15 protrudes from the front end of the ring body 15r from the front end of the main body body 14a, and is disposed on the front side of the front end of the main body body 14a.

FIG. 4 is an enlarged cross-sectional view showing the vicinity of the flange portion 14 b of the body main body 14.
As shown in FIG. 4, a bolt hole 14 c is formed in the flange portion 14 b of the body body 14 so as to penetrate the flange portion 14 b in the connector front-rear direction (left-right direction in FIG. 4).
The bolt 17 is screwed at the front end side of the shaft portion 17a passed through the bolt hole 14c of the flange portion 14b into a female screw hole 15a which is a non-through hole formed in the ring body 15r of the front ring member 15 from the rear end surface 15b. The front ring member 15 is fastened and fixed to the flange portion 14b. The head portion 17b of the bolt 17 is in contact with the flange portion 14b from the rear side (FIG. 2 (a), (c), (d), right side in FIG. 4).

In the operation of tightening the bolt 17 by screwing the shaft portion 17a passed through the bolt hole 14c from the rear side of the flange portion 14b of the body main body 14 into the female screw hole 15a of the front ring member 15, the head portion 17b is connected to the rear side surface of the flange portion 14b. The corrosion-resistant surface layer portion is scraped off and brought into contact with the main body conductor metal portion, thereby being electrically connected to the main body conductor metal portion. As a result, the conductor metal parts of the body main body 14 and the front ring member 15 are electrically connected not only by the body part contactor 18 but also by the bolt 17.
However, since the conductor metal portions of the body main body 14 and the front ring member 15 are electrically connected to each other via the body portion contactor 18, the connector 10 has the conductor metal portions of the body main body 14 and the front ring member 15 connected to each other. The electrical connection via the bolt 17 may not be ensured. Therefore, the female screw hole 15a of the front ring member 15 is not limited to the configuration in which the corrosion resistant surface layer portion is not present and the ring member conductor metal portion is exposed, and the corrosion resistance surface layer portion is formed on the entire inner surface to enhance the corrosion resistance. Also good.

As shown in FIGS. 2 (a), (c), (d), and FIG. 3, the flange portion 14b of the body main body 14 protrudes from the entire circumference of the main body trunk portion 14a around its axis. In the body 11 of the illustrated example, the front ring member 15 is fixed to the flange portion 14b by bolts 17 at four locations in the circumferential direction of the rear end portion of the ring body 15r.
In addition, the bolt fixing | fixed location of the ring main body 15r of the front side ring member 15 with respect to the flange part 14b of the body main body 14 is not limited to four places, Three places or five or more places may be sufficient.

As shown in FIG. 3, the terminal pin 12 and the ground pin 13 are round bar-shaped contact pins formed of a conductive metal.
A plurality of terminal pins 12 provided on the inside of the body 11 of the connector 10 are fixed to a pin support member 16 made of an electrically insulating resin attached to the inside of the body 11. A pin support unit 25 in which the terminal pin 12 is fixed to the pin support member 16 is incorporated inside the front end portion of the body 11 of the connector 10. The terminal pin 12 is supported on the inner side of the front end portion of the body 11 via a pin support member 16 with an axis parallel to the axis of the body 11.

As shown in FIG. 9, the cable 50 includes a plurality of (three in the illustrated example) power transmission cables 51, and a control cable 52 that houses a plurality of control lines 53 (for example, four) inside the sheath 52a. The ground wire 55 (conductor) is covered with a jacket 54 in a lump. The control cable 52 has a configuration in which a plurality of control lines 53 having a configuration in which the outer periphery of the conductor 53a is covered with an electrically insulating resin coating 53b are accommodated in a tubular sheath 52a.
The cable 50 in the illustrated example has a configuration in which only one ground wire 55 is provided in the jacket 54, but the number of ground wires 55 provided in the jacket 54 may be plural.

In FIG. 9, the ground wire 55 is provided by being directly embedded in the jacket 54 of the cable 50 without separately providing a resin coating.
However, the cable 50 has a configuration in which, for example, a grounding wire with a semiconductive layer in which a semiconductive layer is provided on the outer periphery of the ground wire 55 by forming a synthetic resin coating layer or winding a tape-like material is provided in the jacket 54. Can also be adopted.

As shown in FIG. 1, FIG. 3, etc., the pin support member 16 has a power pin 21 to which the conductor 51 a of the power transmission cable 51 of the cable 50 is electrically connected as the terminal pin 12, and the control of the cable 50. A control line pin 22 to which the conductor 53a of the line 53 is electrically connected is attached.
As illustrated in FIG. 3, the connector 10 has a configuration in which a pin support unit 25 having a configuration in which a power pin 21 and a control line pin 22 are attached to a pin support member 16 is incorporated in the front end portion inside the body 11.

  As shown in FIGS. 1 and 2B, the pin support unit 25 of the connector 10 in the illustrated example has a configuration in which a plurality of power pins 21 and control line pins 22 are attached to the pin support member 16. A plurality of power transmission cables 51 (specifically, the conductors 51a) of the cables 50 are electrically connected to the plurality of power pins 21 one by one. The control lines 53 (specifically, the conductors 53a) of the cable 50 are electrically connected to the plurality of control line pins 22 one by one.

As shown in FIGS. 1 and 2B, specifically, three power pins 21 and three control line pins 22 are attached to the pin support member 16 of the connector 10 in the illustrated example. ing.
However, the number of power pins 21 and control line pins 22 provided in the pin support unit 25 and the number of power transmission cables 51 and control lines 53 of the cable 50 can be set as appropriate. Further, the connector 10 includes a pin support unit having a configuration in which the control line pin 22 does not exist as the terminal pin 12 and only the power pin 21 of the power pin 21 and the control line pin 22 is attached to the pin support member 16. It is also possible to adopt a configuration that does.

  The number of control lines 53 of the cable 50 may be larger than the number of control line pins 22 (three) of the connector 10 in order to secure a spare line to be used when the control line 53 is disconnected for some reason. preferable. The control line of the protection line is accommodated in the main body body part 14 without being connected to any of the control line pins 22 of the connector 10.

The pin support member 16 is made of an electrically insulating resin material such as nylon.
As shown in FIG. 3, the pin support member 16 has a plate-like base portion 16a to which the power pins 21 are attached (fixed). The pin support member 16 is incorporated inside the body 11 by fixing the base portion 16a to the inside of the body 11 of the connector 10 in a direction perpendicular to the axis of the main body barrel portion 14a.
The base portion 16a of the pin support member 16 has an outer peripheral portion protruding from the front end of the main body trunk portion 14a located inside the ring main body 15r of the front ring member 15 of the body 11 and the inner surface side of the ring main body 15r. It is fixed to the body 11 by being sandwiched between a pressing protrusion 15c disposed at a position separated from the body portion 14a to the front side (left side in FIG. 3). The pressing protrusion 15 c of the front ring member 15 is provided at the center in the axial direction of the ring body 15 r of the front ring member 15.

  As shown in FIG. 3, among the terminal pins 12 (the power pins 21 and the control line pins 22), the power pins 21 have their rear ends fixed to the base portion 16 a of the pin support member 16, and It is attached in a protruding state from the base portion 16a toward the connector front side (left side in FIG. 3). Regarding the pin support member 16, the side from which the power pins 21 protrude from the base portion 16 a is hereinafter referred to as the front side, and the side opposite to the front side via the base portion 16 a is hereinafter referred to as the rear side.

  The control line pin 22 is inserted into and fixed to a control line pin accommodating cylinder portion 16c formed on the pin support member 16 so as to extend in a direction perpendicular to the base portion 16a. The support member 16 is attached in a protruding state from the base portion 16a toward the connector front side. The tip end portion of the control line pin 22 protrudes from the front end of the control line pin accommodating cylinder portion 16c toward the connector front side.

The power pin 21 is formed with a contact protrusion 21a protruding in a flange shape on the outer periphery at a position slightly shifted from the rear end to the front end side.
The power pin 21 is inserted into the rear projecting portion 21b, which is a rear portion of the contact projecting portion 21a, through the base portion 16a of the pin support member 16 in the thickness direction (the front-rear direction of the base portion 16a). It is inserted into the hole 16d. A conductor attachment member 23 is attached to the power pin 21 by screwing a screw shaft 23c into a female screw hole (not shown) formed from the rear end surface toward the tip. The conductor mounting member 23 is a conductor 51a that is led out from the end wall 23b from which the screw shaft 23c protrudes to the end opposite to the screw shaft 23c to the power transmission cable 51 (see FIG. 9) end of the cable 50. Has a conductor attachment portion 23a for fixing and electrically connecting the two.

The conductor mounting member 23 is entirely formed of a conductive metal.
As shown in FIG. 9, the power pin 21 is electrically connected to the conductor 51 a of the power transmission cable 51 fixed to the conductor mounting portion 23 a of the conductor mounting member 23 via the conductor mounting member 23.

Specifically, the conductor attachment member 23 in the illustrated example has a sleeve-like (cylindrical in the illustrated example) conductor attachment portion 23a that protrudes from the end wall 23b to the side opposite to the screw shaft 23c. . Then, as shown in FIG. 9, the conductor attachment member 23 compresses (crushes and deforms) the conductor attachment portion 23a, and fixes the conductor attachment portion 23a to the conductor 51a of the power transmission cable 51 inserted therein. Thus, it can be electrically connected to the conductor 51a.
Hereinafter, the conductor attachment portion 23a of the conductor attachment member 23 is also referred to as a power pin compression ring portion.

Note that the conductor attachment portion 23a of the conductor attachment member 23 may have any configuration as long as it can be electrically connected to the conductor 51a by fixing the conductor 51a led to the end of the power transmission cable 51. It is not limited to.
For example, the conductor mounting portion 23a protrudes from the end wall 23b to the side opposite to the screw shaft 23c and is crimped and fixed to the conductor 51a led out to the terminal of the power transmission cable 51. Alternatively, a soldering protrusion or the like that protrudes from the end wall 23b to the side opposite to the screw shaft 23c and to which the conductor 51a led out to the end of the power transmission cable 51 is soldered can be used.
The conductor attachment portion 23a of the conductor attachment member 23 is a protruding piece that protrudes from the end wall 23b to the side opposite to the screw shaft 23c. For example, the conductor attachment portion 23a is used for power transmission by a fixing method such as compression, pressure bonding, or soldering. The conductor 51a led out to the end of the cable 51 can be fixed and can be electrically connected to the conductor 51a.

The contact protrusion 21a of the power pin 21 and the surface (front end surface) opposite to the conductor mounting portion 23a of the end wall 23b of the conductor mounting member 23 are formed in a size that does not enter the pin insertion hole 16d. Yes. The contact protrusion 21a of the power pin 21 is disposed on the front side (left side in FIG. 3) from which the power pin 21 protrudes from the base portion 16a of the pin support member 16, and the end wall 23b of the conductor mounting member 23 is The base portion 16a is disposed on the rear side opposite to the front side. The screw shaft 23c of the conductor attachment member 23 protrudes from the center of the front end face of the end wall 23b.
In the pin support unit 25, the power pin 21 and the conductor attachment member 23 are tightened with respect to the power pin 21 of the screw shaft 23 c of the conductor attachment member 23, and the end wall of the contact protrusion 21 a and the conductor attachment member 23. The base portion 16a is sandwiched between the base portion 16a and the base portion 16a.

  The power pin 21 can be attached to and detached from the conductor attachment member 23 by a rotation operation on the conductor attachment member 23 (a rotation operation in the direction opposite to the tightening direction). The power pin 21 and the conductor attachment member 23 can be detached from the pin support member 16 by detaching the power pin 21 from the conductor attachment member 23.

As shown in FIGS. 1, 2 (b), and 3, the base portion 16 a of the pin support member 16 has a cylindrical front cover cylinder that accommodates a portion on the front end side from the rear protruding portion 21 b of the power pin 21. The portion 16b protrudes from the front side of the base portion 16a.
As shown in FIGS. 1, 2 (d), and 3, the pin support member 16 protrudes from the base portion 16a to the rear surface side, and the end wall 23b of the conductor attachment member 23 and the conductor attachment portion 23a. The rear cover cylinder part 16g which accommodates.

  The control line pin accommodating cylinder 16c that accommodates the rear portion from the distal end of the control line pin 22 (the distal end of the control line pin main body 22e described later) is arranged on both the front and rear sides (front side and rear side) from the base portion 16a. And is integrally formed with the base portion 16a. An inner hole (hereinafter, also referred to as a pin accommodation hole 16e) of the control line pin accommodation cylinder portion 16c is a through hole that penetrates the control line pin accommodation cylinder portion 16c over its entire length in the axial direction.

The control line pin 22 is supported coaxially with the central axis of the pin accommodation hole 16e by the inner peripheral surface of the pin accommodation hole 16e.
The rear end portion of the control line pin 22 is a conductor attachment portion 22d for fixing and electrically connecting a conductor 53a (see FIG. 9) led to the front end of the control line 53 of the cable 50. Further, the front portion of the control line pin 22 from the conductor attachment portion 22d is a rod-shaped control line pin main body 22e. The front end of the control line pin main body 22e protrudes from the control line pin accommodating cylinder 16c to the front side of the pin support member 16.

  A portion of the control line pin main body 22e accommodated in the control line pin accommodating cylinder 16c is formed with a female screw hole 22a extending from the outer periphery along a virtual vertical plane perpendicular to the axis of the control line pin main body 22e. ing. A distal end portion of a pin fixing screw 22b whose base end portion is housed in a screw housing hole 16f that penetrates the wall thickness of the control line pin housing cylinder portion 16c is screwed into the female screw hole 22a. The control line pin 22 is fixed to the control line pin accommodating cylinder portion 16c by tightening the pin fixing screw 22b.

  The pin fixing screw 22b has a tool engaging portion 22c for rotating the base end portion accommodated in the screw accommodating hole 16f by engaging a tool from the outside of the control line pin accommodating cylindrical portion 16c. The tool engagement portion 22c in the illustrated example is a tool engagement hole formed to open on the end surface of the base end opposite to the tip end of the pin fixing screw 22b. The pin fixing screw 22b can be detached from the control line pin 22 by engaging and rotating a tool such as a wrench with the tool engaging portion 22c. The control line pin 22 can be removed from the control line pin accommodating cylinder 16c to the rear side by detaching the pin fixing screw 22b from the control line pin 22, and with respect to the control line pin accommodating cylinder 16c. Can be inserted and removed from the rear side.

In the illustrated example, the female screw hole 22a is formed so as to penetrate the central portion in the longitudinal direction of the control line pin 22, but the female screw hole 22a is a non-through hole that does not penetrate the central portion in the longitudinal direction of the control line pin 22. May be.
The means for fixing the control line pin 22 to the pin support member 16 may be any means as long as it can detachably fix the central portion in the axial direction of the control line pin 22 to the pin support member 16. It is not limited to the screw 22b.

The rear end portion of the control line pin 22 is a conductor attachment portion 22d for fixing and electrically connecting a conductor 53a (see FIG. 9) led to the front end of the control line 53 of the cable 50.
As shown in FIG. 9, the conductor attachment portion 22 d of the control line pin 22 in the illustrated example is fixed to the conductor 53 a at the tip of the control line 53 by extrapolating and compressing the conductor 53 a that is led out at the tip of the control line 53. A sleeve-like compression ring portion (hereinafter also referred to as a control pin compression ring portion). The control pin compression ring part 22d can interpolate the conductor 53a led out from the rear end opening to the tip of the control line 53. The control line pin 22 in the illustrated example can be fixed to the conductor 53a at the tip of the control line 53 inserted in the control pin compression ring portion 22d by caulking and compressing (compression deformation) the control pin compression ring portion 22d. By this fixing, the conductor 53a of the control line 53 can be electrically connected.

Note that the conductor attachment portion 22d of the control line pin 22 may have any configuration as long as it can be electrically connected to the conductor 53a by fixing the conductor 53a (see FIG. 9) led to the tip of the control line 53 of the cable 50. It is not limited to the control pin compression ring part.
Examples of the conductor attachment portion 22d include a crimp-fixing protruding piece that protrudes rearward from the control line pin body 22e of the control line pin 22 and is crimped and fixed to the conductor 53a that is led out to the tip of the control line 53. It is also possible to employ a soldering protrusion that protrudes rearward from the wire pin main body 22e and is soldered to the conductor 53a led out to the tip of the control line 53.
The conductor attachment portion 23a of the conductor attachment member 23 is a protruding piece protruding rearward from the control line pin main body 22e, and is led out to the end of the power transmission cable 51 by a fixing method such as compression, pressure bonding, or soldering. The conductor 51a can be fixed and can be electrically connected to the conductor 51a.

As shown in FIG. 3, the front ring member 15 of the body 11 has a rib-like ground pin fixing portion 15d that protrudes from the inner surface of the ring main body 15r.
The ground pin 13 is fixed to the ground pin fixing portion 15d of the front ring member 15 at the rear end thereof, and protrudes from the ground pin fixing portion 15d toward the front side of the connector (left side in FIG. 3). Is attached.
The ground pin 13 includes a rod-shaped ground pin main body 13c and a flange-shaped protrusion 13a projecting in a flange shape on the outer periphery of the rear end portion of the ground pin main body 13c. The flange-shaped protrusion 13a is formed at a position slightly shifted from the rear end to the front end side of the ground pin main body 13c.
The ground pin 13 includes a rear projecting portion 13b which is a rear portion of the flange-shaped projecting portion 13a of the ground pin main body 13c, a ground pin fixing portion 15d of the front ring member 15 and an axial direction of the front ring member 15 (FIG. 3). In the ground pin insertion hole 15e penetrating in the connector longitudinal direction).

  A ground wire attachment member 26 is attached to the ground pin 13 by screwing a screw shaft 26c into a female screw hole (not shown) formed from the rear end surface toward the tip. As shown in FIG. 9, the ground wire mounting member 26 protrudes to the opposite side of the screw shaft 26c from the screw shaft 26c, an end wall 26b on which the screw shaft 26c protrudes, and the end wall 26b. The ground wire 55 extending from the terminal of the cable 50 is fixed and has a ground wire attachment portion 26 a for electrically connecting to the ground wire 55.

The ground wire mounting member 26 is entirely formed of a conductive metal.
As shown in FIG. 9, the ground pin 13 is electrically connected to the ground wire 55 fixed to the ground wire attachment portion 26 a of the ground wire attachment member 26 via the ground wire attachment member 26.

  The ground wire attachment member 26 in the illustrated example has the same configuration as the conductor attachment member 23 attached to the power pin 21. That is, the grounding wire mounting member 26 in the illustrated example is a sleeve-like (cylindrical in the illustrated example) compression ring portion (grounding) that protrudes from the end wall 26b to the opposite side of the screw shaft 26c as the grounding wire mounting portion 26a. Wire compression ring portion). Then, as shown in FIG. 9, the grounding wire mounting member 26 compresses (crimps and deforms) the grounding wire compression ring portion 26a and fixes it to the grounding wire 55 inserted inside thereof. Can be electrically connected to the ground wire 55.

The ground wire attachment portion 26a of the ground wire attachment member 26 may be configured to be electrically connected to the ground wire 55 by fixing the ground wire 55, and is not limited to the compression ring portion.
As the ground wire attachment portion 26a, a configuration that can be adopted as the conductor attachment portion 23a of the conductor attachment member 23 attached to the power pin 21 can be adopted. As the grounding wire mounting portion 26a, a crimping fixing piece that can be crimped and fixed to the grounding wire 55, a soldering protruding piece that can be soldered to the grounding wire 55, and the like can be used.
The ground wire mounting portion 26a of the ground wire mounting member 26 is a projecting piece that protrudes from the end wall 26b to the side opposite to the screw shaft 26c. For example, the ground wire is fixed by a fixing method such as compression, pressure bonding, or soldering. 55 can be fixed and can be electrically connected to the ground wire 55.

The ground pin insertion hole 15 e of the ground pin fixing portion 15 d is a round hole whose inner diameter is slightly larger than the outer diameter of the rear protrusion 13 b of the ground pin 13. The flange-shaped protrusion 13a of the ground pin 13 and the front end surface of the end wall 26b of the ground wire attachment member 26 opposite to the compression ring portion 26a are formed in a size that does not enter the ground pin insertion hole 15e. .
The flange-shaped protrusion 13a of the ground pin 13 is disposed on the front side (left side in FIG. 3) of the ground pin fixing portion 15d, and the end wall 26b of the ground wire mounting portion 26a is disposed on the rear side of the ground pin fixing portion 15d. Yes. The screw shaft 26c of the ground wire attachment member 26 protrudes from the center of the front end face of the end wall 26b.
The ground pin 13 and the ground wire mounting member 26 are clamped between the flange-shaped protrusion 13a and the end wall 26b of the ground wire mounting member 26 by tightening the screw shaft 26c of the ground wire mounting member 26 to the ground pin 13. The ground pin fixing portion 15d is sandwiched between and fixed to the ground pin fixing portion 15d.

  The ground pin 13 can be attached to and detached from the ground wire attachment member 26 by a rotation operation (rotation operation in the direction opposite to the tightening direction) with respect to the ground wire attachment member 26. The ground pin 13 and the ground wire attachment member 26 can be detached from the pin support member 16 by detaching the ground pin 13 from the ground wire attachment member 26.

  A contact 27 made of conductive metal is sandwiched between the rear protrusion 13b of the ground pin 13 and the inner surface of the ground pin insertion hole 15e of the ground pin fixing portion 15d of the front ring member 15. Yes. The corrosion-resistant surface layer portion 15h is not formed on the inner surface of the ground pin insertion hole 15e, and the conductive metal portion (ring member conductor metal portion) that forms the front ring member 15 is exposed.

The contact 27 is in contact with the ring member conductor metal portion exposed on the inner surface of the ground pin insertion hole 15 e and the rear protrusion 13 b of the ground pin 13. The ground pin 13 and the ground wire attachment member 26 are electrically connected to the ring member conductor metal portion via the contact 27. The ground wire 55 is electrically connected to the ring member conductor metal portion via the ground pin 13, the ground wire attachment member 26, and the contact 27. Hereinafter, the contact 27 is also referred to as a ground pin contact.
The ground pin fixing portion 15d, the ground pin 13, the ground wire mounting member 26, and the ground pin contact 27 of the front ring member 15 are connected to the ground ring 55 provided on the cable 50 by the front ring member 15 (specifically, its conductor). A ground wire attaching portion 28 for electrically connecting to the (metal portion) is configured.

As shown in FIGS. 3 and 5A, the ground pin contact 27 is formed in a ring shape and is extrapolated to the rear protrusion 13 b of the ground pin 13.
5A and 5B show an example of the ground pin contactor 27. FIG.
The ground pin contactor 27 illustrated in FIGS. 5A and 5B is a ring-shaped spring member formed by bending a sheet-like metal material made of a conductive metal such as beryllium copper. .
In addition, the ring-shaped ground pin contact 27 of the illustrated example has a discontinuous portion in which the relative displacement is allowed at one place in the circumferential direction without both ends of the sheet-like metal material being connected to each other. (Not shown).

As shown in FIGS. 5 (a) and 5 (b), the ground pin contactor 27 has an arcuate cross section, and is formed in a ring shape that curves with the top of the cross section as the inner peripheral side and both ends as the outer peripheral side. A ring-like elasticity having a side arch-shaped contact portion 27a and an outer peripheral side plate-shaped contact portion 27b projecting from both ends of the inner peripheral arch-shaped contact portion 27a to both sides in the axial direction of the inner peripheral arch-shaped contact portion 27a. It is a member.
Slits 27c extending along the axial direction of the inner peripheral arch-shaped contact portion 27a are formed at three or more locations that are substantially equal in the circumferential direction of the inner peripheral arch-shaped contact portion 27a.
The outer peripheral side plate-like contact portion 27b is formed in a rib shape extending along the entire circumferential circumference of the ring-shaped inner peripheral side arched contact portion 27a along both ends of the cross section of the inner peripheral side arched contact portion 27a. .

  As shown in FIG. 3, the ground pin contact 27 is sandwiched between the rear protrusion 13b of the ground pin 13 and the inner surface of the ground pin insertion hole 15e by elastically deforming the inner arched contact portion 27a. It is. The ground pin contact 27 is brought into contact with the rear protrusion 13b of the ground pin 13 by the elastic biasing force of the inner arch contact portion 27a, and the outer peripheral plate contact. The portion 27b is in contact with the inner surface of the ground pin insertion hole 15e. As a result, the connector 10 reliably ensures electrical continuity (electrical connection) between the ground wire 55 electrically connected to the ground pin 13 and the ring member conductor metal part via the ground pin contactor 27. it can.

The ground pin contactor 27 is elastically attached to the rear projecting portion 13b of the ground pin 13 and the inner surface of the ground pin insertion hole 15e in the gap between the rear projecting portion 13b of the ground pin 13 and the inner surface of the ground pin insertion hole 15e. It is in contact with the force.
As a ground pin contactor interposed between the rear protrusion 13b of the ground pin 13 and the inner surface of the ground pin insertion hole 15e to ensure electrical continuity between the ground pin 13 and the ring member conductor metal part, The specific shape is not particularly limited as long as it is configured to abut against the rear protrusion 13b of the ground pin 13 and the inner surface of the ground pin insertion hole 15e by elastic biasing.
For example, as the ground pin contactor, a configuration in which the outer peripheral side plate-like contact portion 27b is omitted from the above-described ground pin contactor 27 and the plate-like protruding portion 27b functions as the outer peripheral side contact portion can be employed.

Further, the ground pin contact is not limited to a ring-shaped one.
The ground pin contactor may be, for example, a piece-like member disposed only in a part in the circumferential direction of the gap between the rear protrusion 13b of the ground pin 13 and the inner surface of the ground pin insertion hole 15e. good.
However, the ring-shaped ground pin contact 27 has a larger contact portion with respect to the rear protrusion 13b of the ground pin 13 and the inner surface of the ground pin insertion hole 15e as much as possible. Is more advantageous.

  As shown in FIG. 2B, in the connector 10 shown in the drawing, the ground wire mounting portion 28 is accommodated inside a notch 16h in which a part of the outer peripheral portion of the base portion 16a of the pin support member 16 is notched. Has been. When the front ring member 15 is removed from the body main body 14 (described later), the ground wire attachment portion 28 can be extracted from the notch portion 16h to the front side of the base portion 16a of the pin support member 16, and the base It can also be inserted into the cutout portion 16h from the front side of the portion 16a.

The ground wire mounting portion 28 may be any configuration as long as the ground wire 55 can be electrically connected to the ring member conductor metal portion, and the specific configuration is not particularly limited.
The ground wire attachment portion 28 is not necessarily configured to electrically connect the ground wire 55 to the ring member conductor metal portion via the ground pin 13. For example, the ground wire attachment portion 28 protrudes into the ring main body 15 r of the front ring member 15. It may be a protrusion or the like that is provided and directly fixed and electrically connected to the ground wire 55.

As shown in FIG. 3, between the front end cylinder part 14e of the main body trunk | drum 14a and the part (rear side extrapolation cylinder part 15f) extrapolated by the said front end cylinder part 14e of the ring main body 15r of the front side ring member 15. A contactor 18 (hereinafter also referred to as a body part contactor) for electrically connecting the main body body part 14a and the front ring member 15 and a waterproof O-ring 19 are interposed.
The waterproof O-ring 19 is disposed from the body contactor 18 on the rear end exposed portion 11a side of the boundary portion (joint) between the main body barrel portion 14a and the front ring member 15, and from the waterproof O-ring 19 Inundation to the boundary front end 11b side opposite to the rear end exposed portion 11a is prevented.

In the connector 10 of the illustrated example, the waterproof O-ring 19 is fitted to the main body trunk portion 14a by fitting into an O-ring fitting groove 14t formed on the entire circumference of the outer periphery of the front end cylinder portion 14e of the main body barrel portion 14a. It has been.
The waterproof O-ring 19 is attached to the main body trunk portion 14a with a part perpendicular to the extending direction along the O-ring fitting groove 14t protruding from the peripheral surface of the front end cylinder portion 14e.
As a connector, the waterproof O-ring 19 is fitted into an O-ring fitting groove formed in the entire circumference of the inner peripheral surface of the ring main body 15r of the front ring member 15, and the inner peripheral surface of the ring main body 15r. It is also possible to adopt a configuration provided so as to protrude from the head.

In the connector 10 of the illustrated example, the rear end exposed portion 11a of the boundary portion includes a flange portion 14b of the body main body 14 and a front ring member that is in contact with the flange portion 14b from the front side. The outer periphery located in the part on the opposite side to the main body trunk | drum 14a of the part located between 15 ring main body 15r rear ends is pointed out.
Further, the boundary front end 11b indicates a boundary between the front end outer periphery of the main body body 14a and the inner peripheral surface of the ring main body 15r of the front ring member 15.

As shown in FIGS. 3, 6 (a), 6 (b), and 7, the body part contactor 18 is a member formed in a ring shape from a conductive metal.
In the connector 10 of the illustrated example, the body part contactor 18 is connected to the front end of the body body part 14a by a contactor receiving groove 14f circumferentially provided on the outer periphery of the front end cylinder part 14e of the body body part 14a. It is accommodated in a gap secured between the cylindrical portion 14e and the rear outer insertion cylindrical portion 15f of the front ring member 15.
The ring-shaped body part contactor 18 in the illustrated example is formed by bending a sheet-like metal material into a ring shape. However, this body part contactor 18 has a discontinuous part (not shown) in which one end in the circumferential direction is in a state in which relative displacement is allowed without both ends of the sheet-like metal material being connected to each other. It is structured.

  Specifically, the body contactor 18 is a spring member formed by processing a cylindrical member made of a conductive metal such as beryllium copper. And this body part contactor 18 is connected to the front end cylinder part 14e of the main body trunk part 14a (specifically, the groove bottom surface 14g of the contactor accommodation groove 14f) and the rear side insertion cylinder part 15f of the front ring member 15. The body part contactor 18 is urged and brought into contact by elasticity, and is interposed between the front end cylinder part 14e and the rear outer insertion cylinder part 15f.

As shown in FIG. 8, the inner surface of the contact receiving groove 14f of the front end cylindrical portion 14e of the main body barrel portion 14a is a non-formed portion where the electrically insulating and corrosion-resistant surface layer portion 14h is not formed. The conductor metal part (main body conductor metal part) of the conductive metal to be formed is exposed.
On the other hand, a non-formed portion in which the corrosion-resistant surface layer portion 15h is not formed is secured also in a portion of the rear ring portion 15f of the front ring member 15 facing the contact accommodating groove 14f. The ring member conductor metal part is exposed. Hereinafter, the surface formed by the ring member conductor metal portion exposed to the non-formed portion is also referred to as a conductor metal portion exposed surface 15h.

  The body part contactor 18 is formed on the body bottom part 14g of the contactor receiving groove 14f of the main body body part 14a and the conductor metal part exposed surface 15h of the rear side insertion cylinder part 15f of the front ring member 15. The contact 18 is urged and brought into contact by the elasticity of itself, and is interposed between the front end cylinder part 14e and the rear extrapolation cylinder part 15f. Therefore, the body 11 of the connector 10 is electrically connected not only by the bolt 17 but also by the body part contactor 18 between the main body trunk part 14a and the front ring member 15 (the main body conductor metal part and the ring member conductor metal part). It is the composition connected to.

FIG. 7 shows an example of the body part contactor 18.
As shown in FIGS. 7 and 8, the body contactor 18 is projected in a direction facing each other from the outer peripheral arched contact portion 18a having a cross-sectional arch shape, and from both ends of the outer peripheral arched contact portion 18a. And an inner peripheral side plate-like contact portion 18b.

  The outer peripheral side arch-shaped contact portion 18a is formed in a ring shape in such a direction that the top of the cross section is positioned on the outer peripheral side and both ends of the cross section are positioned on the inner peripheral side. The arch-shaped contact portion 18a on the outer peripheral side of the body contactor 18 in the illustrated example extends over the entire circumference in the circumferential direction around the central axis, and forms a top plate portion 18c that forms a flat top surface perpendicular to the central axis. The top plate portion 18c has inclined plate portions 18d extending at an angle with respect to the top plate portion 18c. The inclined plate portions 18d on both sides of the top plate portion 18c are separated from each other (in the direction along the central axis of the outer arch-shaped contact portion 18a) as they go from the top plate portion 18c to the central axis side of the outer arch-shaped contact portion 18a. The distance is increased with respect to the top plate portion 18c.

  Moreover, the outer peripheral side arched contact portion 18a is divided at three or more locations in the circumferential direction by slits 18e formed extending along the axial direction of the outer peripheral side arched contact portion 18a. The slits 18e are formed at three or more locations that are even in the circumferential direction of the outer arched contact portion 18a.

  As shown in FIG. 8, the body contactor 18 includes a front end tube portion 14e of the main body barrel portion 14a (specifically, a groove bottom surface 14g of the contactor receiving groove 14f) and a rear outer insertion tube of the front ring member 15. The outer arched contact portion 18a is elastically deformed and sandwiched between the portion 15f (the conductor metal portion exposed surface 15g in the illustrated example). The body contactor 18 has a top portion (a top plate portion 18c in the illustrated example) of the outer side arcuate contact portion 18a in the rear outer insertion cylinder portion 15f of the front ring member 15 by the elastic biasing force of the outer side arcuate contact portion 18a. The inner peripheral side plate-like contact portion 18b is urged and brought into contact with the peripheral conductor metal portion exposed surface 15g, and the groove bottom surface 14g (hereinafter referred to as conductor metal) of the contact receiving groove 14f on the outer periphery of the front end cylindrical portion 14e of the main body barrel portion 14a. (Also referred to as a part exposed surface). Thereby, the connector 10 can reliably ensure electrical conduction (electrical connection) between the conductor metal portions of the main body barrel portion 14 a and the front ring member 15 via the body contactor 18.

As shown in FIGS. 3 and 9, the connector 10 includes a cable fixing portion 31 that fixes the cable 50 to the body 11 on the rear side of the body 11.
The cable fixing portion 31 of the connector 10 in the illustrated example is configured to hold and fix the cable 50 between a pair of cable holding members 33 (cable holding portion).
As shown in FIGS. 2D, 3, and 9, the cable fixing portion 31 includes a pair of bolts 32 and a pair of cable gripping members on the rear side of the rear end nut member 20 of the rear end portion of the body 11. And 33.

The rear end nut member 20 includes a ring-shaped nut portion 20a screwed to the rear end portion of the main body barrel portion 14a, and a pair of rib-shaped protrusions protruding from both sides to the rear side through the inner holes of the nut portion 20a. Wall part 20b.
The pair of bolts 32 of the cable fixing portion 31 is threaded through the screw shaft portions 32b one by one through the through holes 20d formed in the pair of rib-like projecting wall portions 20b of the rear end nut member 20, respectively. The projections 20 are provided in parallel to each other so as to extend in a direction perpendicular to the interval direction of the protruding wall portions 20b and the axial direction of the inner hole of the nut portion 20a. The screw shaft portion 32b of each bolt 32 is inserted in the through hole 20d of the rib-like protruding wall portion 20b so as to be slidable in the axial direction.
The cable fixing portion 31 is interposed between a pair of cable gripping members 33 that are slidably inserted in the longitudinal direction of these bolts 32 by tightening nuts 34 screwed to the screw shaft portions 32b of the respective bolts 32. The cable 50 is held and fixed. Further, the cable fixing portion 31 that holds and fixes the cable 50 between the pair of cable holding members 33 can release the holding of the cable 50 by the pair of cable holding members 33 by loosening the tightening of the nut 34.

The rear end nut member 20 is screwed into the main body barrel portion 14a by screwing a female screw portion 20c formed on the inner periphery of the nut portion 20a with a male screw portion 14i formed on the outer periphery of the rear end portion of the main body barrel portion 14a. Has been.
As shown in FIGS. 1 and 2 (c) to (e), the outer periphery of the nut portion 20a of the rear end nut member 20 is parallel to the central axis of the inner hole of the nut portion 20a at a plurality of locations in the circumferential direction. A flat tool engaging surface 20f is formed extending in the vertical direction. The rear end nut member 20 can be easily rotated (rotated about its axis) with respect to the body main body 14 by engaging the tool with the tool engaging surface 20f, and the rotation operation allows the rear end nut member 20 to be attached to and detached from the body main body 14. Yes.

The cable fixing portion 31 may be any configuration that can fix the cable 50 to the body main body 14, and the specific configuration is not particularly limited.
As the cable fixture, a configuration that can switch between fixing and releasing the cable 50 with respect to the body 11 (hereinafter, also referred to as “fixable-releasable type cable fixture”), as in the cable fixing portion 31 in the illustrated example, is suitably employed. it can. As the unreleasable type cable fixing portion, for example, a plurality of bolts are screwed to the rear end portion of the body in a direction perpendicular to the virtual extension of the central axis of the main body trunk portion, and the front end of each bolt is rotated by rotating these bolts. It is also possible to adopt a configuration in which the cable gripping members provided on the cable are brought close to each other and the cable is gripped and fixed from a plurality of directions.

  Further, the connector 10 can incorporate a rubber packing (not shown) externally attached to the cable 50 in order to prevent water from entering from the rear end of the body 11 to the inside of the body 11 at the rear end portion of the main body barrel portion 14a.

As described above, the connector 10 can be supplied (carried in) to the site in a temporarily assembled state, for example, and assembled at the tip of the cable 50 as illustrated in FIG.
As illustrated in FIG. 9, the aspect (connector assembly) assembled at the distal end portion of the cable 50 drawn into the main body trunk portion 14a from the rear side is one aspect of the connector 10 according to the embodiment of the present invention. . Further, the temporarily assembled connector 10 is also an aspect of the connector 10 according to the embodiment of the present invention.

Here, as an example of a method of assembling the connector 10 at the distal end portion of the cable 50 (connector assembling method, assembling method of a cable with a connector), a case where the temporarily assembled connector 10 is brought into the field and the cable 50A with a connector is assembled is described. To do.
In this assembling method, first, the front ring member 15 and the pin support unit 25 are removed from the body main body 14 of the temporarily assembled connector 10 carried into the site. Further, the rear nut member 20 removed from the body main body 14 is extrapolated to the cable 50.

The front ring member 15 can be removed from the body main body 14 by rotating the bolt 17 (see FIG. 4) that fixes the front ring member 15 to the body main body 14 and removing it from the body 11. The front ring member 15 is removed from the body main body 14 with the ground pin 13, the ground wire attaching member 26, and the ground pin contactor 27 assembled to the ground pin fixing portion 15 d being in an assembled state.
The pin support unit 25 can be removed from the body main body 14 at the same time as the front ring member 15 is removed from the body main body 14. Moreover, after removing the pin support unit 25 from the body main body 14, the power pin 21, the conductor attachment member 23, and the control line pin 22 are removed from the pin support member 16 and disassembled. Further, after removing the front ring member 15 from the body main body 14, the ground pin 13, the ground wire attaching member 26, and the ground pin contact 27 are removed.

  Next, the cable 50 is drawn from the rear side of the body body 14 to the inside of the body body 14 (inside the body body 14a), and the power transmission cable 51, the control line 53, and the ground line 55 that are extended from the terminal of the cable 50 are the body. It is assumed that the body portion 14a is pulled out from the front end. Then, the conductor 51a protruding from the front end of the power transmission cable 51 is fixed and electrically connected to the conductor attachment portion 23a of the conductor attachment member 23 for the power pin 21, and the conductor attachment portion 22d at the rear end portion of the control line pin 22 is connected. The conductor 53a led to the tip of the control line 53 is fixed and electrically connected. Further, the tip of the ground wire 55 is fixed to the ground wire attachment portion 26a of the ground wire attachment member 26 and electrically connected thereto.

For fixing and electrically connecting the conductor of the cable 50 to the power pin compression ring portion 23a, the control pin compression ring portion 22d, and the grounding wire compression ring portion 26a, for example, the compression ring portion in which the conductor tip is inserted is compressed. Then fix the conductor and solder the conductor to the compression ring.
The conductor attachment portion 23a of the conductor attachment member 23 for the power pin 21, the conductor attachment portion 22d of the control line pin 22, and the ground wire attachment portion 26a of the ground wire attachment member 26 fix and electrically connect the conductor of the cable 50. It functions as a conductor connection terminal part.

  Next, a pin support unit assembly process for reassembling the pin support unit 25 is performed. In this pin support unit assembly process, as shown in FIG. 9, the conductor mounting member 23 for the power pin 21 is inserted from the rear side of the pin support member 16 into the rear cover cylinder portion 16g, and the control line pin 22 is inserted into the pin. It inserts into the pin accommodation hole 16e of the support member 16 from the back side. Then, the rear protruding portion 21b of the power pin 21 inserted from the front side of the pin support member 16 to the inside of the front cover cylinder portion 16b is inserted into the screw insertion hole 16d of the pin support member 16 and the screw of the conductor mounting member 23 for the power pin 21 The conductor attachment member 23 is assembled to the pin support member 16 together with the power pin 21 by screwing on the shaft 23c and tightening. Further, the control line pin 22 is fixed to the pin support member 16 using a pin fixing screw 22b. Thereby, the pin support unit 25 is reassembled.

When the pin support unit assembly process is completed, the pin support unit 25 is inserted into the ring main body 15r of the front ring member 15 from the rear side (rear end surface 15b side), and the screw shaft 26c of the ground wire attachment member 26 is inserted into the front ring member. 15 ground pin insertion holes 15e. The screw shaft 26c of the ground wire mounting member 26 is inserted into the ground pin contact 27 incorporated in the ground pin insertion hole 15e.
Next, the ground pin 13 inserted from the front side of the front ring member 15 is screwed and tightened into the ground pin insertion hole 15 e of the front ring member 15, and the ground pin 13 and the ground wire mounting member 26 are fixed to the ground pin of the front ring member 15. It fixes to the part 15d and the grounding wire attaching part 28 is assembled.
The ground pin 13 inserts the rear end protrusion 13b inside the ground pin contact 27 in the ground pin insertion hole 15e. The rear end protruding portion 13b is formed in a cylindrical shape whose outer diameter is slightly larger than the minimum inner diameter of the inner peripheral arched contact portion 27a (see FIG. 5B) of the ground pin contactor 27. The rear end protruding portion 13b is press-fitted inside the inner peripheral arched contact portion 27a of the ground pin contactor 27. Thereby, the inner peripheral side arched contact portion 27a of the ground pin contactor 27 is surely brought into contact with the outer peripheral surface of the rear end protruding portion 13b.

When the assembly of the ground wire attaching portion 28 is completed, the front ring member 15 is extrapolated to the front end cylinder portion 14e of the body main body 14, and the pin support unit 25 inside the front ring member 15 is pressed into the front end of the body main body 14 by the front ring member 15. The front ring member 15 is fixed to the body main body 14 using a bolt 17 (see FIG. 4) (see FIG. 9).
Thereby, the pin support unit 25 and the front ring member 15 can be assembled to the body main body 14.

  The body contactor 18 accommodated in the contactor accommodating groove 14f of the main body trunk portion 14a has an outer arch shape before the ring main body 15r of the front ring member 15 is extrapolated to the front end cylinder portion 14e of the main body trunk portion 14a. A portion of the contact portion 18a located on the side opposite to the inner peripheral plate-like contact portion 18b is slightly protruded outward from the outer peripheral surface of the front end cylinder portion 14e. In the operation of extrapolating the ring main body 15r of the front ring member 15 to the front end cylinder portion 14e, the body contactor 18 is brought into contact with the inclined plate portion 18d on the front side from the top plate portion 18c of the outer peripheral side arcuate contact portion 18a from the front side. It is pressed by the rear end of the ring main body 15r. The body contactor 18 is elastically deformed and pushed into the contactor receiving groove 14f as the extrapolation of the front ring member 15 with respect to the front end cylinder part 14e of the main body barrel part 14a proceeds. When the body contactor 18 has been extrapolated from the front end cylinder part 14e of the main body body part 14a of the front ring member 15, an outer peripheral arch shape is formed on the inner peripheral surface of the rear outer insertion cylinder part 15f of the front ring member 15. The top plate portion 18c of the contact portion 18a is brought into contact with the elastic biasing force.

  Further, the front ring member 15 is inclined with respect to the front side of the outer side arcuate contact portion 18a of the body contactor 18 with the rear side insertion cylindrical portion 15f as the extrapolation of the main body barrel portion 14a with respect to the front end cylindrical portion 14e proceeds. It is possible to smoothly shift from sliding with the plate portion 18d to sliding with the top plate portion 18c of the outer peripheral side arcuate contact portion 18a. The body contactor 18 does not obstruct the extrapolation work of the front ring member 15 with respect to the front end cylinder part 14e of the main body barrel part 14a. The front ring member 15 can smoothly advance the extrapolation with respect to the front end cylinder part 14e of the main body trunk part 14a.

When the assembly of the pin support unit 25 and the front ring member 15 to the body main body 14 is completed, the rubber packing externally attached to the cable 50 is incorporated inside the rear end portion of the main body barrel 14a as necessary, and then the main body barrel 14a. The screwed rear end nut member 20 is fastened and fixed to the main body barrel portion 14a.
Next, the cable 50 is fixed to the main body trunk portion 14 a by the cable fixing portion 31.
Thereby, as shown in FIG. 9, the connector 10 is assembled at the tip of the cable 10, and the assembly of the cable with connector 50A is completed.

  As shown in FIG. 12, the connector-attached cable 50 </ b> A is inserted into the fitting cylinder portion 61 of the receiving-side connector 60 and the terminal 10 of the connector 10 is connected to the receiving-side connector. It is inserted into a cylindrical terminal 62 incorporated in 60, and is electrically connected to the power supply device 64 via the cylindrical terminal 62. As a result, the power transmission cable 51 (specifically, the conductor) of the cable with connector 50 </ b> A can be electrically connected to the power supply device 64.

  In the connector 10 (connector assembly) that has been assembled to the tip of the cable 10, the conductor metal parts of the body main body 14 and the front ring member 15 are electrically connected via the body contactor 18. Yes. For this reason, in this connector 10, the state in which the body main body 14 and the front ring member 15 are at the same potential can be stably maintained, and the body main body 14 and the front ring member 15 can be reliably grounded. Can do. As a result, even if the connector 10 is electrically insulated by electric corrosion between the front ring member 15 and the body main body 14 and the bolts 17 that are fastened and fixed to each other, the body main body 14 And since electrical conduction between the conductor metal portions of the front ring member 15 is ensured by the body contactor 18, voltage induction on the surface of the body main body 14 can be reliably prevented. That is, this connector 10 can reliably prevent voltage induction on the surface of the body main body 14 regardless of the environment.

  In the connector 10, the front ring member 15 is electrically connected to the ground line 55 of the cable 50, and the body main body 14 is also electrically connected to the ground line 55 via the body contactor 18. . In this connector 10, electrical continuity is established between the body metal part 14 a and the conductor metal part of the front ring member 15 through the body contactor 18 interposed between the main body trunk part 14 a and the front ring member 15. It can be surely secured. For this reason, the electrical connection between the body main body 14 and the ground wire 55 can be reliably ensured via the front ring member 15. Therefore, in the cable with connector 50A, not only the front ring member 15 but also the body main body 14 can be reliably grounded.

  Further, the body contactor 18 of the connector 10 brings the top plate portion 18c of the outer arch-shaped contact portion 18a into surface contact with the conductor metal portion exposed surface 15g of the front ring member 15, and the inner peripheral plate-shaped contact portion 18b. The conductive metal part exposed surface 14g of the part 14a can be brought into surface contact. For this reason, the body contactor 18 has an advantage that a sufficiently large contact portion with respect to the conductor metal portion of the main body trunk portion 14a and the front ring member 15 can be secured.

Further, the connector 10 has a structure in which the front ring member 15 is electrically connected to the ground wire 55 inside the body 11. Further, the connector 10 has a configuration in which the body contact 18 is disposed on the boundary front end 11b side from the waterproof O-ring 19 at the boundary (joint) between the main body barrel 14 and the front ring member 15. Yes.
For this reason, the connector 10 can prevent electrolytic corrosion of the conductor metal part exposed surfaces 14g and 15g of the main body body part 14 and the front ring member 15 and the body contactor 18, and the body main body 14 is electrically connected to the ground wire 55. Can be stably maintained for a long time.

Although the present invention has been described based on the best mode, the present invention is not limited to the above-described best mode, and various modifications can be made without departing from the gist of the present invention.
As a body contactor having a spring member structure (hereinafter also referred to as a spring structure body contactor), the conductor metal part exposed surface of the main body body portion 14a and the conductor metal of the front ring member 15 disposed facing the conductor metal part exposed surface Any structure may be used as long as it is configured to be in contact with the portion exposed surface by elastic biasing and interposed between the main body trunk portion 14a and the ring main body 15r of the front ring member 15, and the specific structure is not particularly limited. .
The spring structure body contact is applied to the body contact portion of the main body body portion 14a by elastic biasing and to the conductor metal portion exposure surface of the front ring member 15 by elastic biasing. A front ring member abutting portion to be in contact with. In the body contactor 18 illustrated in FIGS. 7 and 8, the inner peripheral plate-like contact portion 18 b functions as a trunk contact portion and the outer arch contact portion 18 a functions as a front ring member contact portion.

As the spring structure body contactor, in addition to the body contactor 18 shown in the drawing, for example, it is accommodated in the contactor accommodating groove 14f of the main body barrel part 14a and is brought into contact with the exposed conductor metal part exposed surface 14g of the groove bottom. A plate spring structure in which a cantilevered plate-like front ring member abutting portion that abuts against the exposed surface of the conductive metal portion of the front ring member 15 is extended from the plate-like body abutting portion to the one side thereof Or a conductive metal ring having a hollow structure can be used.
Further, as the spring structure body contactor, for example, as shown in FIG. 10, a ring-shaped one (body contactor 18A) having a cross-sectional structure in which the inner peripheral side and the outer peripheral side of the ground pin contactor 27 described above are reversed. ) Etc. can also be adopted.

The body contactor 18A illustrated in FIG. 10 is a ring-shaped front ring member that extends in a cross-sectional structure in which the inner peripheral side and the outer peripheral side of the inner peripheral side arcuate contact portion 27a of the ground pin contactor 27 are reversed. In this configuration, plate-like body contact portions 18g projecting from both ends of the front ring member contact portion 18f are provided on both axial sides of the contact portion 18f.
The front ring member abutting portion 18f has a cross-sectional structure in which the top of the arch-shaped cross section of the inner peripheral side arched contact portion 27a of the ground pin contactor 27 is the outer peripheral side and both ends are the inner peripheral side.

3 and 8 exemplify a configuration in which the body contact is accommodated in the contact accommodating groove 14f formed in the main body barrel 14a of the main body barrel 14a and the ring main body 15r of the front ring member 15.
However, as the connector body, a structure in which a contact accommodating groove is formed in the ring main body 15r of the front ring member 15 and the body contact is accommodated in the contact accommodating groove can also be adopted. In this case, the groove bottom surface of the contact receiving groove is a conductive metal portion exposed surface from which the ring member conductive metal portion is exposed, and the main conductor metal portion is exposed at a portion of the main body barrel portion 14a facing the contact receiving groove. A conductor metal part exposed surface is secured, and the body contactor accommodated in the contactor receiving groove is brought into contact with the groove bottom surface (conductor metal part exposed surface) of the contactor receiving groove and the conductor metal part exposed surface of the main body body part 14a. Make contact.

As the spring structure body contact housed in the contact housing groove formed in the ring main body 15r of the front ring member 15, for example, the same structure as that of the ground pin contact 27 described above can be suitably employed. In this spring structure body contactor, the inner peripheral arch-shaped contact portion 27a functions as a body contact portion, and the outer peripheral plate-shaped contact portion 27b functions as a front ring member contact portion.
Moreover, as a spring structure body contactor accommodated in the contactor accommodation groove formed in the ring main body 15r of the front ring member 15, for example, the body contactor 18 described above or the spring structure body contactor of the leaf spring structure, A structure in which the body contact part and the front ring member contact part are reversed, that is, a body contact part having the same structure as the above-described front ring member contact part, and the body contact part described above A configuration having a front ring member abutting portion having the same configuration as that described above can be suitably employed.

  As the body contactor, the conductor metal portion exposed surface of the main body barrel portion 14a and the conductor metal portion exposed surface of the front ring member 15 are securely brought into contact with each other, and the conductor metal portions of the main body barrel portion 14a and the front ring member 15 Any structure can be used as long as the electrical connection can be reliably ensured, and the spring member is not necessarily required. In this regard, for example, a solid conductive metal ring or metal plate can be used as the body contactor.

  As shown in FIG. 11, the connector according to the embodiment of the present invention includes a body main body 14, a front ring member 15 that is externally attached to the front end cylinder portion 15 m of the main body trunk portion 14 a and fixed to the body main body 14. A structure in which a conductive waterproof O-ring 18B (hereinafter also referred to as a conductive O-ring) is interposed as a body contact can be employed. In the connector 10 </ b> B illustrated in FIG. 11, the conductive O-ring 18 </ b> B also serves as a waterproof O-ring at the boundary (joint) between the body main body 14 and the front ring member 15 and a body contactor.

  The connector 10B shown in FIG. 11 omits the contact housing groove 14f of the main body body 14a, the body contact 18 and the conductor metal portion exposed surface 15g of the front ring member 15 of the connector 10 illustrated in FIGS. The conductive O-ring 18B is fitted in the O-ring fitting groove 14t of the main body barrel portion 14a instead of the waterproof O-ring 19. The conductive O-ring 18B is formed by molding a conductive rubber material obtained by mixing conductive metal powder into a rubber base material into a ring shape. The conductive O-ring 18B has an outer peripheral portion opposite to the inner peripheral side facing the groove bottom surface 14u of the O-ring fitting groove 14t outside the peripheral surface of the front end cylinder portion 14e (opposite to the inner peripheral surface of the main body trunk portion). And is attached to the main body trunk portion 14a.

  The main body part 14a of the connector 10B illustrated in FIG. 11 is a conductor metal part in which the bottom surface 14u of the O-ring fitting groove 14t of the front end cylinder part 14e is exposed from the main body conductor metal part that forms the main body part 14a. It is an exposed surface. In the connector 10B illustrated in FIG. 11, the conductive O-ring 18B includes a groove bottom surface 14u (hereinafter also referred to as a conductor metal portion exposed surface) of the O-ring fitting groove 14t of the front end cylinder portion 14e of the main body barrel portion 14a. The inner surface of the front ring member 15 is in contact with a conductor metal portion exposed surface 15n formed at a portion facing the conductive O-ring 18B. This connector 10B is connected between the main body conductor metal portion and the ring member conductor metal portion via the conductive O-ring 18B in contact with the main body trunk portion 14a and the conductor metal portion exposed surfaces 14u and 15n of the front ring member 15. The electrical continuity (electrical connection) is ensured.

In addition to the conductive O-ring 18B, no separate body contact is provided between the body body 14a of the connector 10B and the front ring member 15 in the illustrated example. Further, in addition to the conductive O-ring 18B, an O-ring is not separately provided between the main body barrel portion 14a and the front ring member 15.
In the connector 10B illustrated in FIG. 11, as described above, the contact accommodating groove 14f is not formed in the main body trunk portion 14a. The front ring member 15 has a structure in which the ring member conductor metal part is exposed only on the conductor metal part exposed surface 15n on the surface of the body main body 14 facing the front end cylinder part 14e and the flange part 14b.
However, as a connector, in addition to the conductive O-ring 18B, a body contactor and / or a waterproof O is separately provided between the main body trunk portion 14a and the front ring member 15 that is externally fixed to the main body trunk portion 14a. A configuration provided with a ring can also be adopted.

  In addition, as a connector having a configuration in which a conductive O-ring 18B is interposed between the main body barrel portion 14a and the front ring member 15, the conductive O-ring 18B is connected to the rear outer insertion tube portion 15f of the front ring member 15. Fits into the O-ring fitting groove formed on the entire circumference in the circumferential direction of the inner circumferential surface, and exposes the conductor metal part exposed surface which is the groove bottom surface of the O-ring fitting groove, and the O-ring fitting of the body body part 14a. A configuration in which the conductive O-ring 18B is brought into contact with the exposed surface of the conductive metal portion formed at a position facing the groove can also be employed.

Moreover, the installation position of the body contact between the main body trunk portion 14a and the front ring member 15 is limited between the front end cylinder portion 14e of the main body barrel portion 14a and the rear outer insertion cylinder portion 15f of the front ring member 15. Not.
The installation position of the body contact in the connector body may be, for example, between the rear end surface 15b of the front ring member 15 in FIG. 3 and the portion of the flange portion 14b of the body body 14 facing the rear end surface 15b. good. In this case, for example, it is formed on one or both of the rear end tube portion 15f rear end surface of the front ring member 15 and the portion of the flange portion 14b of the body main body 14 facing the rear end tube portion 15f rear end surface. A clearance for accommodating the body contact is secured by the contact accommodating groove.
Further, when a waterproof O-ring 19 is provided in addition to the body contact between the rear end surface 15b of the front ring member 15 and the portion of the flange portion 14b of the body main body 14 facing the rear end surface 15b, The O-ring 19 is disposed on the rear end exposed portion 11a side of the boundary portion (joint) between the main body barrel portion 14 and the front ring member 15 from the body contactor.

  The structure of the connector other than the body body 14a of the body body, the sealing structure for watertightly sealing the rear end of the inner hole 14j of the body body 14a, the specific structure of the pin support unit, and the like can be changed as appropriate. It is.

The present invention is not limited to the above-described embodiment, and can be widely applied to connectors having a joint portion obtained by joining metal members with surface layer portions formed by forming electrically insulating surface layer portions on conductive metal members.
The connector according to the embodiment of the present invention is not limited to the power feeding connector assembled at the front end of the power feeding cable for feeding power from the land-side power source to the inboard power feeding package of the above-described embodiment. As this connector, for example, an electrical connector for a wire harness, an electrical connector for indoor wiring, and the like, a connector having a joint portion obtained by joining together metal members with surface layer portions formed of electrically conductive surface layer portions on conductive metal members Widely applicable to.
The connector according to the embodiment of the present invention is a metal in which a metal member with an insulating layer (for example, the body main body 14 and the front ring member 15 according to the above-described embodiment) is fixed to each other by forming an electrically insulating surface layer portion on a conductive metal member. The present invention can be widely applied to connectors having a member unit (for example, the body 11 of the above-described embodiment) and terminals to be brought into contact with the terminals of the mating connector. In this connector, an exposed portion where the conductive metal member is exposed is secured on the surfaces of the metal member with an insulating layer facing each other, and the exposed portion is brought into contact with the metal member with an insulating layer on both sides. A configuration in which a conductive contact is sandwiched is employed.

  DESCRIPTION OF SYMBOLS 10,10B ... Connector, 11 ... Body, 12 ... Terminal (terminal pin), 13 ... Ground pin, 14 ... Body main body, 14a ... Main body trunk, 14f ... Contact accommodation groove, 14g ... (Conductor metal part of body main body) ) Exposed surface (conductor metal portion exposed surface, groove bottom surface), 14h ... corrosion-resistant surface layer portion, 15 ... front ring member, 15g ... (conductor metal portion exposed surface of the front ring member) exposed surface (conductor metal portion exposed surface), 15h: Corrosion-resistant surface layer portion, 15n: Exposed surface (conductive metal portion exposed surface) of the front ring member, 18 ... Contact (body contact), 18A ... Contact (body contact), 18B ... Contact (Body contactor: Conductive O-ring), 19 ... Water-proof O-ring, 21 ... Terminal (power pin), 22 ... Terminal (control line pin), 28 ... Ground wire mounting part, 50 ... Cable, 51 ... electric power transmission cable, 51a ... conductor, 3 ... control line, 55 ... ground line.

Claims (6)

The front end of the body is fitted inside the body having a sleeve-shaped main body and a front ring member that is externally fixed to the front end thereof, and is electrically connected to a conductor of a cable inserted from the rear side. Incorporates a terminal that contacts the terminal of the mating connector
Between the main body trunk and the front ring member, a conductive contact for electrically connecting the main body trunk and the front ring member is provided,
The main body barrel and the front ring member are formed by forming an electrically insulating and corrosion-resistant surface layer portion on a conductive metal member, and the corrosion-resistant surface layer at a position where the main body barrel and the front ring member face each other. A connector in which a non-formed part is secured and the contact is in contact with an exposed surface of the conductive metal member exposed to the non-formed part.   The connector according to claim 1, wherein the contact is a spring member formed of a conductive metal, and is in contact with the main body barrel and the front ring member with an elastic biasing force. The contactors connector according to the entire circumference claim is formed in a ring shape interposed over 1 or 2 between the front ring member and the rear barrel.   The connector according to claim 1, wherein the contact is a conductive waterproof O-ring. The connector according to any one of claims 1 to 4 , further comprising a waterproof O-ring arranged on a rear end exposed portion side of a boundary portion between the main body barrel portion and the front ring member from the contact. The front ring member has a ground wire attachment portion for electrically connecting a ground wire drawn from the rear side to the main body to the inside of a portion protruding from the front end of the main body to the front. The connector according to any one of 5 .

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