KR101874563B1

KR101874563B1 - Support insulator for fixing overhead electric power line

Info

Publication number: KR101874563B1
Application number: KR1020180004470A
Authority: KR
Inventors: 백재선; 백승호
Original assignee: 주식회사 수창텍크
Priority date: 2018-01-12
Filing date: 2018-01-12
Publication date: 2018-07-04

Abstract

The present invention relates to a fixed suspension insulator with a machining distribution line. More particularly, the present invention relates to a fixed suspension insulator with a machining distribution line, and more particularly, The pair of machined line supporting pieces spaced apart from each other by the drawing of the insulating member from the line supporting piece can smoothly come into contact with each other and at the same time the contacting state can be maintained so that the machining line is not separated between the pair of machined line supporting pieces The present invention relates to a stationary suspension insulator with a processing distribution line for maintaining a stable seating state.

Description

{Support insulator for fixing overhead electric power line}

[0001] The present invention relates to a suspension type fixed suspension line by a distribution line in the field of distribution technology, and more particularly, to a suspension type suspension type suspension system which is installed in a rough rail to stably fix a machining line, A pair of machined line supporting pieces separated from each other by the drawing of the insulating member from the pair of machined line supporting pieces can smoothly come into contact with each other and at the same time the machining line is held between the pair of machined line supporting pieces The present invention relates to a suspension wire fixed to a processing distribution line so as to maintain a stable seating state without detachment.

Generally, in order to increase the efficiency of the electricity, the power plant transmits the power with a high transmission voltage.

However, such high-voltage electricity can not be used in real life, that is, it can not be used. Therefore, it is generally transmitted to the home by reducing pressure through a pillar-type transformer, and in the case where a high-voltage current such as a factory is required, the pillar-

In order to feed high-voltage current safely in a normal electric pole, the electric wire is commonly referred to as a "LP insulator". So that the high-voltage electric current of the machined line is prevented from being in contact with the solid iron by fixing the high-voltage electric wire on the insulator.

In the case of the insulator, the machining line is generally seated on the upper surface, and the machined line and the upper portion of the insulator are wound by using a wrapping member coated with a synthetic resin material, thereby preventing the machined line from deviating to the outside.

However, in the case where the insulator is damaged, in order to replace the insulator, the power line to the machining line is cut off and the machining line and the winding member winding the insulator are released and released. And a series of replacement processes to be rewound and fixed in the same manner as described above after the replacement is complicated and takes a long time to replace and power is cut off during the replacement process, There is a problem.

In addition, when the worker exchanges the insulators, the communication between the workers is wrong, and when the electric power is supplied to the cut-off power line, the worker is electrocuted.

As a conventional technique in which such a problem is partially improved, Korean Patent Registration No. 10-0933939 (Jan. 1, 2010) discloses a supporting bracket for fixing a work line.

However, in the conventional power transmission line fixing bracket, when the insulating member is pulled out from the pair of machining line supporting pieces, the state in which the pair of machining line support pieces are in contact with each other can not be maintained. There is a problem that it is pulled in between the supporting line of the machining line while being disengaged.

Korea Patent Registration No. 10-0933939 (Jan. 6, 2010)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for mounting a machined line, The machining line is separated from the pair of machining line supporting pieces so that the pair of machining line supporting pieces separated from each other by the drawing of the insulating member from the machining line supporting piece can be smoothly contacted and the contacted state is maintained And to maintain a stable seating state without the use of a power distribution line.

The problems to be solved by the present invention are not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above-mentioned object, the present invention provides an electric device having an installation groove (11-1) which is open at one end and is installed so as to cross the electric pole (P) via a fixing band (B) (10) comprising a body part (11) having a body part (11) and an opening part (12-1) at one side and a cover (12) fixed to the body part (11) via a plurality of threaded parts (S); A drive motor (20) having a spline shaft (21) having a plurality of grooves radially formed on its outer surface and installed in the installation groove (11-1); A rotary drum 30 having an engaging groove 31 interlocking with the spline shaft 21 on one inner circumferential surface and disposed in the opening 12-1; An insulating member 40 having a fixing portion 41 of a shape of "? &Quot; at one end, and the other end of which is fixed to the circumferential surface of the rotary drum 30; A shaft support member (50) fastened to the cover (12) and axially supporting the rotary drum (30); A pair of machining line support pieces 61 having one end and the other end formed to be outwardly inclined so that the machining line L can be seated on the upper surface and a pair of machined line support pieces 61 having one end formed on the upper surface of the body part 11 and the cover 12 A machining line supporter 60 fixed to the outer surface of the machining line supporter 61 and having the other end fixed to the machining line supporter 61 and elastically supporting the machining line supporter 61; And a switch unit (70) installed on the bare iron (10) and controlling the operation of the drive motor (20), characterized in that the pair of machined line supporting pieces (61) Further comprising a pressing portion (100) for guiding the pair of machined line supporting pieces (61) separated in a state of being separated by the drawing of the insulating member (40) so as to be smoothly contacted and maintaining the contacted state , The pressing portion 100 includes a pair of supporting bars 110 extending upward from the upper portion of the pair of the elastic pieces 62; A wire (120) having both ends passing through the pair of support bars (110); A pressure plate 130 provided at both ends of the wire 120; A protective tube 140 provided on the pair of support bars 110 to allow the wire 120 to pass therethrough; And a spring 150 coupled to the outside of the wire 120 so as to be positioned between the pressure plate 130 and the support bar 110. The wire 120 drives the driving motor 20 Which is rotated together with the pair of the resilient piece 62 as the insulating member 40 is pulled in between the pair of resilient piece pieces 62 or drawn out from the pair of resilient piece pieces 62, And the first and second wires 121 and 122 are connected to each other by a connecting member 190 so as to be detachable from each other. A connecting bar 191 having a first wire 121 connected to one end and a thread formed on an outer circumferential surface thereof; And a control bar (192) connected to the second wire (122) at the other end and threaded to the outside of the other end of the connection bar (191) Is rotated in the direction in which the pair of the resilient piece pieces 62 are oriented when the insulating member 40 is inserted between the pair of the resilient piece pieces 62 by driving the drive motor 20 When the insulating member 40 is pulled out from the pair of the resilient piece pieces 62, the supporting bar 110 is pressed while being relaxed, So as to smoothly return the elastic piece (62) to the original state and maintain the contact state.

According to the present invention, since the machining line can be detached and released through the driving motor, the rotary drum, and the insulating member, users who can not use the electric power due to the cutoff of the electric power of the machining line can fundamentally solve the inconvenience In addition, since it is not necessary for the operator to directly touch the machining line, it is possible to protect the operator from electric safety accidents caused by electric shock, and to reduce the time required for replacement work.

In addition, a pair of machined line supporting pieces separated from each other by the drawing of the insulating member from the pair of machined line supporting pieces can smoothly contact with each other, while the contacted state is maintained, So that a stable seating state can be maintained without being detached.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

1 is an assembled perspective view showing a fixed suspension plug with a processing distribution line according to the present invention.
2 is an exploded perspective view showing a fixed suspension plug with a processing distribution line according to the present invention.
3 is an assembled cross-sectional view showing a fixed suspension insulator with a processing distribution line according to the present invention.
4A to 4B are explanatory diagrams showing a state of use in which a fixed suspension plug with a processing distribution line according to the present invention is shown.
5 is a partial cross-sectional view showing a state in which a pressurizing portion is provided in a fixed type suspending insulator with a processing distribution line according to the present invention.
And
Fig. 6 is an enlarged view showing another example of a wire in a fixed type suspension wire according to the present invention. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And should not be construed as limited to the embodiments described herein.

Since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein.

It should be understood that the embodiments according to the concept of the present invention are not limited to the particular mode of disclosure but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

The present invention utilizes the same as described in the above-mentioned Japanese Patent Application No. 0933939. Therefore, all of the features of the device configuration described below can be understood as those described in Korean Patent No. 0933939.

However, according to the present invention, the 'support wire for fixing the transmission line' among the components disclosed in the above-mentioned Japanese Patent No. 0933939 is replaced with a 'suspension wire fixed to the work line' And further includes a structure for guiding a pair of machined line supporting pieces in a spaced apart state to be smoothly contacted with each other and a description of the operation thereof.

Therefore, the device structure, characteristics, and operation relationship described below will be incorporated by reference in the above-mentioned Japanese Patent No. 0933939, and the structure related to the main features of the present invention will be described in detail at the rear end.

1 to 3, the fixed suspension type fixed line suspension according to the present invention includes a wedge 10 fixed to an upper portion of a pole P via a fixing band B, A rotating drum 30 provided on the driving motor 20; an insulating member 40 fixedly mounted on the circumferential surface of the rotating drum 40; A machining line support portion 60 disposed on the upper surface of the wrought iron 10 so as to be opposed to each other and capable of placing the machining line L thereon, And a switch unit 70 which is connected to the input /

The rigid frame 10 has a mounting portion 11-1 with one end opened and a body portion 11 which is provided at an upper portion of the electric pole P so as to cross the electric pole P via a fixing band B And a cover 12 having an opening 12-1 at one side and fixed to the body portion 11 having the installation groove 11-1 through a plurality of screw portions S. [

A fastening hole (not specifically shown) is formed on the outer peripheral edge of the mounting groove 11-1, and the threaded portion S is fastened.

A rectangular opening 12-1 having at least two openings is formed in the outer surface of the cover 12 and the rotary drum 30 and the spacer S to be described later are inserted into the opening 12-1 .

A mounting hole (not specifically shown) is formed in a longitudinal direction at an edge and a center of the cover 12, and a plurality of threaded portions S and a shaft supporting member 50 are respectively inserted and fastened.

In the case of the present invention, the shape of the body part 11 and the cover 12 of the wrought iron 10 is shown as a rectangular shape, but if necessary, it can be formed into a circular rod or a polyhedron, Not limited.

A drive motor 20 is inserted and fixed to the installation groove 11-1 of the body part 11. The drive motor 20 is provided with a spline shaft 21 having a plurality of recesses formed radially on the outer surface thereof, And the spline shaft 21 is engaged with the insertion groove 31 of the rotary drum 30 to be described later.

Therefore, when the driving motor 20 is rotated, the spline shaft 21 and the insertion groove 31 are engaged with each other in a concavo-convex shape so that the rotary drum 30 can be easily rotated, The insulating member 40 provided to the insulating member 30 and the working line L fixed to the insulating member 40 are supported in a state of being engaged with each other.

Further, after the drive motor 20 is mounted in the installation groove 11-1, a gap between the installation groove 11-1 and the drive motor 20 is sealed so that the rain can not enter the inside .

2, the rotating drum 30 rotated by the driving motor 20 has a single shape in its entirety. On one inner circumferential surface of the rotating drum 30, there are provided an insertion groove 31 for interlocking with the spline shaft 21, A mounting hole 32 opened in the longitudinal direction on the other side for inserting the shaft supporting member 50 and a fastening hole 33 for fastening the insulating member 40 which is opened outward on the circumferential surface and which will be described later.

The insulating member 40 fixed to the rotary drum 30 is formed of an insulating material of a ceramic material having a plurality of ellipses laminated on the upper and lower sides, And a screw tab is formed on an outer surface of the lower single rod and is fixedly coupled to the fastening hole 33 of the rotary drum 30. [

The machining line supporter 60 which is arranged to face each other on the upper surface of the rigid iron 10 so as to be able to receive the machining line L is formed so that one end and the other end of the machining line supporter 60 are inclined outwardly, And one end is fixed to the upper surface of the body part 11 and the cover 12 of the wrought iron 10 and the other end is fixed to the upper surface of the outer surface of the machining line support piece 61 And an elastic piece 62 which is fixed to the workpiece support piece 61 and elastically supports the workpiece support piece 61 in one direction.

The machined line support piece 61 is formed with a support piece (not specifically shown) of a letter " A " shape, and a guide piece (not specifically shown) Are integrally formed.

3, one end is fixed to the outer surface and the other end is fixed to the outer surface of the body portion 11 of the wrought iron 10 and the cover 12 (not shown) And an elastic piece 62 fixed to an upper surface of the elastic piece 62 are formed.

A switch unit 70 is provided on the outer surface of the rigid frame 10, and the switch unit 70 controls the operation of the drive motor 20.

The machining line supporter 60 composed of the machined line supporting piece 61 and the resilient piece 62 and the fixed portion 41 of the insulating member 40 are not energized when they contact the high pressure working line L It is preferable to form it from an insulating material which does not have the above-

Meanwhile, although not specifically shown, it is preferable that power is supplied to the drive motor 20 through a transformer installed in the electric pole P. [

The insulating member 40 is replaced in a state in which the electric power of the machining line L is not cut off even when the insulating member 40 needs to be replaced due to damage or aging and the drive motor 20 is operated, (L) can be retained again and fixed.

The present invention is capable of transferring and releasing the machining line L through the drive motor 20, the rotary drum 30 and the insulating member 40, It is possible to eliminate the inconvenience of the users who could not do the work and to protect the worker from the electric safety accident caused by the electric shock because the operator does not need to directly touch the processing line (L) Can be dramatically reduced.

The operation of the present invention will be described with reference to FIGS. 4A to 4B.

When the insulating member 40 is damaged or deteriorated due to external force, the worker rides on the electric pole P to move the fixed portion 41 of the insulating member 40, which is holding the working line L, So that the replacement operation is carried out.

More specifically, when the worker presses the switch unit 70 installed on the barrel 10 in the state of being on the electric pole P, the drive motor 20 rotates in the counterclockwise direction and the drive motor 20 And the rotary drum 30 coupled with the rotary drum 30 are also rotated together.

The insulating member 40 fixed to the rotary drum 30 is also rotated so that the machining line L that has been retained in the fixing portion 41 is gradually released and the insulating member 40 is completely rotated, Direction, the machined line L is completely released from the fixed portion 41 and dropped by its own weight.

At this time, the pair of machined line supporting pieces 61, which have been kept apart from each other by the insulating member 40, are restored to their original positions with an arbitrary interval due to the elastic force of the resilient piece 62, It can be safely supported even if it falls.

After the working line L is released from the insulating member 40 by operating the switch unit 70 as described above, the operator can dismantle the damaged or aged insulating member 40 from the rotary drum 30, (40) and mounted on the rotary drum (30).

After the new insulating member 40 is mounted on the rotary drum 30, the switch unit 70 provided on the bare iron 10 is operated again to operate the drive motor 20, The rotating drum 30 rotates in the clockwise direction by the rotation of the rotating shaft 30 and the rotating shaft 30 of the rotating drum 30 rotates together with the new insulating member 40 mounted on the rotating drum 30, (L) while being coupled to the processing line (L).

More specifically, when the rotary drum 30 provided with the new insulating member 40 on the peripheral surface is rotated by the drive motor 20, the upper end rod (not specifically shown) of the new insulating member 40 is rotated, (Not specifically shown) of the machining line support piece 61. The machining line L that is seated on the machining line support piece 61 at this time is spaced apart from the center of the axis And is naturally inserted and detached by the force of pushing and pushing with its own weight to the rotating fixing part 41, so that the state as shown in Fig. 4A is maintained.

In the present invention, as shown in Figs. 5 to 6, the pair of machined line supporting pieces 61 are separated from each other by the drawing of the insulating member 40, The configuration of the pressing portion 100 for guiding the machined line supporting piece 61 to be smoothly contacted and maintaining the contacted state is further realized.

That is, when the insulating member 40 is pulled out from the pair of machining line supporting pieces 61 due to the driving of the driving motor 20, The line supporting piece 61 can be smoothly returned to the original state and can be brought into contact therewith while maintaining the contact state so that the machining line L is not separated between the machining line supporting pieces 61, .

The pressing portion 100 includes a pair of supporting bars 110 extending upward from the upper portion of the pair of the resilient piece pieces 62 and a pair of supporting bars 110 having both ends connected to the pair of supporting bars 110 A protection tube 130 provided at both ends of the wire 120 and a protection tube 140 provided at the pair of support bars 110 to allow the wire 120 to pass therethrough, And a spring 150 coupled to the outside of the wire 120 to be positioned between the support bar 110 and the support bar 110.

The pair of support bars 110 are formed to extend upward from the upper portions of the pair of the resilient pieces 62 and oppose each other in the left-right direction.

The pair of supporting bars 110 are preferably detachably fixed to the pair of the elastic pieces 62.

This is for the purpose of facilitating the attachment and detachment of the working line (L) to the fixing portion (41).

The pressing portion 100 includes a pair of fixing bars 160 extending upward from the upper portions of the respective resilient pieces 62 and receiving the lower portion of the supporting bar 110, 110 may be fixed to the pair of fixing bars 160. [

The fixing means 170 may be a bolt or a nut.

The protection tube 140 is fixed to the support bar 110 so that both ends of the protection tube 140 face the left and right direction while protecting the wire 120 passing through the support bar 110, Thereby preventing the support bar 110 from being damaged.

The pressing unit 100 may further include a binding member 180 for fixing the protection tube 140 to the supporting bar 110.

The protective pipe 140 passes between the opposite ends of the support bar 110, and a thread is formed on the outer circumferential surface.

The coupling member 180 is screwed to the protective pipe 140 so as to be positioned at both sides of the support bar 110 and is connected to the support bar 110 Fixed.

The pressing plate 130 may have a circular plate shape and may have a connecting ring to which the end of the wire 120 is connected to the inner side facing the supporting bar 110.

The pressing plate 130 may have an annular protrusion 131 formed on an inner surface of the pressing plate 130 and coupled to the outer side of the one end of the spring 150.

The support bar 110 may be formed with an annular ring 111 which is coupled to the outer surface of the support bar 110 opposite to the pressure plate 130 to the outside of the other end of the spring 150.

Accordingly, the spring 150 can be stably coupled between the pressure plate 130 and the support bar 110.

The spring 150 may be strong enough to support the pressure plate 130 while being supported by the annular ring 111.

Alternatively, the wire 120 may be formed of a steel bar having a diameter enough to support the pressure plate 130.

The wire 120 may be connected to the pressure plate 130 by various known types such as welding.

The wire 120 preferably guides the rotation of the pair of support bars 110 with a predetermined length and a predetermined strength.

That is, the wire 120 is inserted into the pair of the elastic pieces 62 or drawn out from the pair of the elastic pieces 62 by driving the driving motor 20 Thereby guiding the pivotal movement of the pair of support bars 110 pivoted together with the pair of the resilient piece pieces 62.

The spring 150 is contracted by the pressure of the support bar 110 as it is rotated in the direction in which the pair of the resilient piece pieces 62 are oriented and presses the support bar 110 while being relaxed, So that the pair of the resilient pieces 62 can smoothly return to the original state.

That is, when the insulating member 40 is inserted between the pair of the elastic pieces 62 by driving the driving motor 20, the pair of elastic pieces 62 are aligned When the insulating member 40 is pulled out from the pair of the resilient piece pieces 62, the supporting bar 110 is pulled out while being relaxed, So that the pair of the resilient pieces 62 can smoothly return to the original state and the contact state is maintained.

The wire 120 may be detachably connected to the first and second wires 121 and 122 by a connecting member 190 while being branched from the center between the both ends.

The connecting member 190 includes a connection bar 191 having one end connected to a first wire 121 and a thread formed on an outer circumferential surface thereof and a second end connected to the second wire 122, And a control bar 192 screwed to the outside of the other end of the connection bar 191.

The connection bar 191 is rotatably connected to the first wire 121 and the control bar 192 is rotatably connected to the second wire 122.

The connecting member 190 can adjust the tension of the wire 120 according to the tightening or loosening rotation while the connecting bar 191 and the adjusting bar 192 are coupled to each other by screwing.

The connection member 190 may allow the machining line L to be drawn or drawn between the first and second wires 121 and 122 according to the separation of the connecting bar 191 and the control bar 192 .

As a result, the pressing portion 100 can smoothly move the pair of machining line supporting pieces 61 in a state of being separated from the pair of machining line supporting pieces 61 by the drawing of the insulating member 40 So that the machined line L is not separated between the pair of machined line supporting pieces 61, so that a stable seating state can be maintained.

10: Twisted wire 20: Driving motor
30: rotating drum 40: insulating member
50: shaft fixing member 60: machining line support portion
70: Switch part 100:
110: support bar 120: wire
121: first wire 122: second wire
130: pressure plate 140: protective pipe
150: spring 160: stationary bar
170: fixing means 180: binding member
190: connecting member 191: connecting bar
192: Control bar

Claims

A body part 11 provided with an installation groove 11-1 opened at one end and provided at an upper portion of the electric pole P so as to intersect with the electric pole P via a fixing band B, (10) having a cover (12-1) and a cover (12) fixed to the body part (11) via a plurality of threaded parts (S);
A drive motor (20) having a spline shaft (21) having a plurality of grooves radially formed on its outer surface and installed in the installation groove (11-1);
A rotary drum 30 having an engaging groove 31 interlocking with the spline shaft 21 on one inner circumferential surface and disposed in the opening 12-1;
An insulating member 40 having a fixing portion 41 of a shape of "?&Quot; at one end, and the other end of which is fixed to the circumferential surface of the rotary drum 30;
A shaft support member (50) fastened to the cover (12) and axially supporting the rotary drum (30);
A pair of machining line support pieces 61 having one end and the other end formed to be outwardly inclined so that the machining line L can be seated on the upper surface and a pair of machined line support pieces 61 having one end formed on the upper surface of the body part 11 and the cover 12 A machining line supporter 60 fixed to the outer surface of the machining line supporter 61 and having the other end fixed to the machining line supporter 61 and elastically supporting the machining line supporter 61; And
And a switch unit (70) installed on the solid iron (10) for controlling the operation of the drive motor (20)
The pair of machining line supporting pieces 61 in a state of being separated by the drawing of the insulating member 40 from the pair of machined line supporting pieces 61 can be smoothly brought into contact with each other, Further comprising: a pressing portion (100)
The pressing portion 100 includes a pressing portion
A pair of supporting bars 110 extending upward from the upper portion of the pair of the tongue pieces 62;
A wire (120) having both ends passing through the pair of support bars (110);
A pressure plate 130 provided at both ends of the wire 120;
The wire 120 is provided in the pair of support bars 110 so that the wire 120 passes through the support bar 110 while protecting the wire 120 passing through the support bar 110, A protective tube 140 for preventing breakage of the support bar 110 by contact;
A spring 150 coupled to the outside of the wire 120 to be positioned between the pressure plate 130 and the support bar 110;
A pair of fixing bars 160 extending upward from the upper portion of each of the elastic pieces 62 and receiving the lower portion of the supporting bar 110;
Fixing means (170) for detachably fixing the support bar (110) to the pair of fixing bars (160); And
And a binding member (180) for fixing the protective pipe (140) to the support bar (110)
The protective pipe 140 is formed of a synthetic resin,
A thread is formed on the outer peripheral surface,
The coupling member 180 is threaded on the inner circumferential surface and is fixed to the support bar 110 while being screwed to the protective pipe 140 so as to be positioned at both sides of the support bar 110,
The pair of support bars (110)
And is detachably fixed to the pair of tongue pieces (62), so that the moving line (L) can be smoothly attached and detached to the fixing portion (41)
The pressure plate (130)
An annular protrusion 131 coupled to an outer side of the one end of the spring 150 is formed on an inner side of the support bar 110 opposite to the support bar 110,
The support bar (110)
An annular ring 111 coupled to the outside of the other end of the spring 150 is formed on an outer side surface opposed to the pressure plate 130,
The wire (120)
As the driving member 20 is driven to draw the insulation member 40 between the pair of the elastic pieces 62 or the pair of the elastic pieces 62, 62 of the first and second support bars 110 and 120. The first and second wires 121 and 122 are connected to each other by a connecting member 190 so as to be detachably connected to each other And,
The connecting member (190)
A connection bar 191, one end of which is rotatably connected to the first wire 121 and the other end of which is threaded; And
And a control bar (192) rotatably connected to the second wire (122) at the other end and threaded on the inner circumferential surface with one end thereof being opened and screwed to the outside of the other end of the connection bar (191) The connecting bar 191 and the adjusting bar 192 are connected to each other by screwing to adjust the tension of the wire 120 according to the tightening or loosening rotation, The processing line L is drawn or drawn between the first and second wires 121 and 122,
The spring (150)
When the insulating member 40 is inserted between the pair of the resilient pieces 62 by driving the drive motor 20, the pair of resilient pieces 62 are rotated in the direction in which the pair of resilient pieces 62 are oriented, When the insulating member 40 is pulled out from the pair of the resilient piece pieces 62 while being compressed by the pressing of the bar 110, (62) is smoothly returned to the original state, and at the same time, the contact state is maintained.