KR101781118B1 - Loose proof type hot line clamp for line of electric power distribution - Google Patents

Abstract

The present invention relates to an anti-loosening live wire clamp for a distribution line, and more specifically, to an anti-loosening live wire clamp for a distribution line which prevents a jump line from being damaged or generation of a gap between the jump line and the distribution line when birds sit on a post or an operation to repel the birds is conducted and facilitates the connection or disconnection between the distribution line and the jump line. The live wire clamp comprises: a first connection plate installed on one side of the post; a first insulator installed on the first connection plate; a first distribution line connected to the first connection plate; a second connection plate installed on the other side of the post; a second insulator installed on the second connection plate; a second distribution line connected to the second connection plate; the jump line connected to the first and second distribution lines; a holding plate connecting the post with the jump line and installed on the post; a holding insulator installed on the holding plate; a rotation driving part connected to the jump line, detecting the birds sitting on the jump line, the first insulator, the second insulator, the first connection plate, the second connection plate, the holding plate, or the holding insulator and preventing the birds from sitting by rotating and moving the jump line; an operating bar locked and coupled to the holding plate; a main body member having a through support part and a fastening groove part; and a restraint member having a restraint groove part pressed against the fastening groove part and restricting the jump line.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wire-

More particularly, the present invention relates to a wire clamp for a distribution line, and more particularly, to a wire clamp for a distribution line that effectively prevents a bird from sitting on a strut and prevents a jump line from being broken or a clearance between a jump line and a distribution line The present invention relates to an unclamping type live wire clamp for a distribution line capable of easily connecting or disconnecting a distribution line and a jump line and preventing the clamp from being loosened during a bird-fighting operation.

Generally, the power generated from the power plant is transmitted to the enterprise and the household through a wire or jumper to the distribution line, and such a wire can be buried underground or installed on a pole by a distribution line such as a concrete pole.

On the other hand, when inserting or wiring the electric wire or the jump wire in the electric pole with the electric wire as described above, insulator for insulation is essentially used.

The jumper wire is fixed to the electric wire with a distribution wire by a support insulator, and the support insulator basically includes a jump wire support portion for supporting the electric wire, a jumper support portion for supporting the jump wire support portion and the jump wire, and a fixing portion for fixing the insulation insulator portion to the electric wire Respectively.

The support portion is formed mainly of a magnetic material and has a plurality of wings spaced apart at regular intervals, and each of the wings is inclined downward from the support portion toward the circumference of the wing in a state where the support insulator is installed upward, While the other side has a horizontal or upward convex shape.

Accordingly, there is no problem in the case of installing the jump line in a manner of upward processing, but in the case of downward processing of the jump line, there is a problem that insulation breakdown occurs due to the concave shape of each wing, have.

In addition, since the conventional jump line support insulator needs to be installed only in an upward process, that is, a method of supporting the jump line from the bottom, there is a problem that workability is lowered and compatibility is lowered.

On the other hand, even in the case where the construction standard of the jump line to the distribution line has been expanded to the downward processing method, the above-mentioned problems have not been adopted in the entire downward processing method.

That is, for example, when a jump line of three phases is wired, only the A-phase jump line and the C-phase jump line should be down-processed and the B-phase jump line should be upwardly processed due to the concern of coincidence between the jump lines or synergy with the grounding object. There is a problem that a jump line or a lead wire can not be installed downward in a complicated longitudinal road.

In order to solve the above problems, a distributor jumper support insulator has been developed. The insulator according to the prior art has a fixing part formed with a nut hole so as to be fixed by bolts to a barrel of a telephone pole, And a plurality of blades which are spaced apart from each other at a predetermined interval in the periphery of the body and whose one side and the other side of each blade are formed in a convex shape inclined from the body toward the circumference of the blade, A first fixing plate fixed to the base so as to change the direction of the base, a second fixing plate fixed to the first fixing plate and fixing the jump line together with the first fixing plate, The first fixing plate and the second fixing plate both include a jump line support portion that is mutually coupled by a fixing bolt.

Background Art [0002] The background art of the present invention is disclosed in Korean Utility Model Registration No. 20-0184037 (published on Jun. 01, 2000, entitled: Design of Jump Line Joint Line).

Since the jump line support insulator according to the prior art is fixed to the support, when the bird is seated on the insulator or the jump line and the secretion is buried in the bird, the jump line may be damaged or corroded and a clearance may be generated between the jump line and the power line In the case of providing vibration to the distribution line and the jump line for the purpose of eliminating a bird, vibration may be transmitted to the clamp connecting the jump line and the clamp may be loosened to cause a short-circuit accident or a safety accident .

Therefore, there is a need for improvement.

The present invention can effectively prevent a bird from sitting on a strut, prevent a jump line from being broken or a clearance from being generated between a jump line and a distribution line during a bird-fighting operation, to easily connect or disconnect a distribution line and a jump line, And it is an object of the present invention to provide an unclamping type live wire clamp for a distribution line which can prevent the clamp from being loosened during a bird-fighting operation.

The present invention relates to a stroller comprising a first connecting rod rotatably installed at one side of a strut by a rotation connecting portion; A first insulator provided on the first linkage; A first distribution line rotatably connected to the first connection block by a rotary connection; A second connecting rod rotatably installed on the other side of the strut by a rotation connecting portion; A second insulator provided on the second linkage; A second distribution line rotatably connected to the second connection block by the rotation connection portion; And electrically connects the rotation connection portion connected to the first distribution line and the rotation connection portion connected to the second distribution line so as to electrically connect the first distribution line and the second distribution line, A jump line rotatably connected to the distribution line and the second distribution line; A cradle connecting the strut with the jump line and rotatably installed on the strut; A mounting bracket installed on the cradle; And is connected to the jump line, and when the bird sits on the jump line, the first insulator, the second insulator, the first connecting rod, the second connecting rod, the cradle, or the mounting insulator A rotation driving unit for detecting the jumping line and rotating the jumping line from one side of the strut to the other side or the other side of the strut to prevent the bird from sitting; An operating bar engaging with the cradle; A body member having a penetration support portion through which the operation bar passes and a coupling groove portion through which the jump line is engaged; And a restricting member rotatably connected to the actuating bar and having a restricting groove portion pressed against the locking groove portion to restrain the jump line inserted into the locking groove portion.

Further, the retaining portion of the present invention may include: a first semicircular member fixed to the upper end of the operation bar and formed in a semicircular shape; A second semicircular member rotatably connected to the upper end of the first semicircular member by a hinge shaft and formed in a semicircular shape and having a ring shape when connected to the first semicircular member; And a lock portion connecting the lower end of the first semicircular member and the lower end of the second semicircular member and connecting the lower end of the first semicircular member and the lower end of the second semicircular member to the cradle when the lower ends of the first semicircular member and the second semicircular member are disposed in close contact with each other .

In addition, the lock portion of the present invention may include: a fixing protrusion provided so as to protrude / retract from the lower end of the first semicircular member; A fixing groove formed at a lower end of the second semicircular member to insert the fixing protrusion; A release wire extending from the back surface of the fixing projection to extend outside the first semicircular member; And a third elastic member interposed between the fixing protrusion and the first semicircular member and pressing the fixing protrusion toward the fixing groove.

A wire clamp for a distribution line according to the present invention includes a rotation connecting portion for electrically connecting a jump line to a distribution line and connecting the rotation line to the distribution line and a rotation driving unit for rotating the jump line as if skipping the jump line to one side or the other side The jump line can be rotated from one side of the support to the other side by the operation of the rotation driving part when the bird is sitting on the jump line or the insulator so that an external force is applied to the bird to prevent the bird from sitting on the jump line or the insulator.

In addition, since the wire clamp for a distribution line according to the present invention is provided with a mount, a mount, and a rotating connection portion for rotatably connecting the jump line and the support, the jump line is positioned within a predetermined distance from the support, Since the jump line is rotated from one side of the support to the other side from the other side, there is an advantage that the jump line can be prevented from being broken by the rotation of the jump line.

Further, in the wire clamp for a distribution line according to the present invention, the operation bar, which is connected to the base in a one-touch manner, is screwed and fixed to the main body member, and the jump line is constrained Therefore, it is possible to prevent the clamp from being separated from the jump line and the mount while the algae elimination operation is proceeding, which is an advantage that the jump line can be firmly supported.

FIG. 1 is a configuration diagram illustrating a jump line support provided with an unlocking type live wire clamp for a distribution line according to an embodiment of the present invention.
FIG. 2 is an operational state diagram illustrating a jump line support having an unlocking type live wire clamp for a distribution line according to an embodiment of the present invention.
FIG. 3 is a configuration diagram illustrating an unlocking type live wire clamp for a distribution line according to an embodiment of the present invention.
FIG. 4 is a block diagram illustrating a jump line support having an unlocking type live wire clamp for a distribution line according to an embodiment of the present invention. Referring to FIG.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an unlocking type live wire clamp for a distribution line according to the present invention will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a schematic view illustrating a jump line support provided with an unlocking type live wire clamp for a distribution line according to an embodiment of the present invention. FIG. 2 is a perspective view of a wire line clamp for a distribution line according to an embodiment of the present invention. FIG. 3 is a schematic view illustrating a wire clamp for a distribution line according to an embodiment of the present invention. FIG. 4 is a schematic view illustrating a wire grid according to an embodiment of the present invention. Fig. 7 is a block diagram showing a jump line support provided with a live unclamping type live wire clamp.

1 to 4, a jump line support having an unlocking type live wire clamp for a distribution line according to an embodiment of the present invention is mounted on one side of a strut 10 by a rotation connection part 80 A first insulator 32a provided on the first connecting rod 32b and a first power distributing line 32b connected to the first connecting rod 32b by a rotation connecting portion 70. The first connecting rod 32b, A second connecting rod 34b rotatably installed on the other side of the pillar 10 by a rotation connecting portion 80, a second insulator 34a provided on the second connecting rod 34b, A second distribution line 34 connected to the first distribution line 34b by a rotation connection unit 70 and connected to the first distribution line 32 so as to electrically connect the first distribution line 32 and the second distribution line 34, The rotation connection portion 70 is electrically connected to the rotation connection portion 70 connected to the second distribution line 34 and the rotation connection portion 70 is electrically connected to the first distribution line 32 and the second distribution line 34 A cradle 52 which connects the cradle 10 and the jump line 50 and which is rotatably installed on the cradle 10 and a cradle 52 which is provided on the cradle 52, A first insulator 32a, a second insulator 34a, and a second insulator 34. The first insulator 32a and the second insulator 34b are connected to the jump line 50, It is possible to sense the jump line 50 from one side of the support 10 to the other side or the side of the support 10 from the side of the support 10 when the bird is seated on the link 32b, the second link 34b, the mount 52, And a rotation driving unit 90 that rotates and moves from one side to the other side to prevent the bird from sitting.

A drive groove portion 12 is formed at the upper end of the support 10 of the present embodiment and a rotation drive portion 90 is provided at an inner side of the drive groove portion 12 so that the jump line 50 is connected to one side A rotary drive unit 90 is provided for rotating and moving the jump line 50 from the other side of the column 10 to the other side or from one side of the column 10 to the other side.

In addition, a bird sensor is provided to sense the bird when the bird sits on the jump line 50, the connecting rod, the insulator, the rotary connection portion 70, or the rotary connection portion 80. The bird sensor is connected to the jump line 50 The load cell is installed in the rotary connection unit 70 and the rotary connection unit 80 so that the load of the bird can be increased by increasing the load on the distribution line or the jump line 50 When the tension is increased, it is sensed and the sensing signal is transmitted.

When the detection signal is sensed as the bird is seated and the detection signal is transmitted as described above, the jump line 50 is rotated like a jump rope by the operation of the rotation driving unit 90, so that an external force is applied to the bird and the surprise bird flew away from the jump line 50 So that it is possible to prevent the connection portions of the jump line 50 and the jump line 50 from being damaged.

Since the jumping line 50 rotated as described above is rotated while maintaining electrical connection with the power distribution line by the rotation connection portion 70, it is possible to prevent the connection portions of the jump line 50 and the jump line 50 from being damaged, .

The rotation connection portion 70 includes a cap member 72 into which a cable of a power distribution line is inserted, a connection cap 74 which is in tight contact with the inner wall of the cap member 72 and is electrically connected to the cable, A finishing cap 76 coupled to the first connecting shaft 74a extending outwardly from the inner wall of the connecting cap 74 and disposed symmetrically with the cap member 72 and a finishing cap 76 disposed between the connecting cap 74 and the finishing cap 76 A connection block 77 which is rotatably installed and which is connected to the outer wall by a jump line 50 and a connection block 77 which is electrically connected to the connection cap 74 by connecting the connection block 77 and the connection cap 74 electrically (Not shown).

The cap member 72 is made of a lead-free material, and a hole is formed at the center thereof to insert a power distribution line. The cable of the power distribution line is closely attached to the inner wall of the cap member 72, The end of the connection cap 74 and the end of the cap member 72 are engaged by the fastening member.

A first connection shaft 74a protruding outward is formed at the center of the inner wall of the connection cap 74 and a nut hole 76a formed at the center of the inner wall of the finishing cap 76 is formed in a spiral formed at the end of the first connection shaft 74a. So that the connection cap 74 and the finishing cap 76 are spaced apart from each other.

The connection block 77 is inserted into the groove of the connection cap 74 and the finishing cap 76 so that the connection block 77 is connected to the first connection And is rotatable about the shaft 74a.

The connecting block 77 rotatably installed around the first connecting shaft 74a is slid while keeping the connection cap 74 in a state in which the connecting cap 74 is in close contact with the pressing portion 78, The electrical connection between the power line 74 and the power line 74 is maintained so that the electrical connection with the power line is maintained even if the jump line 50 is rotated.

The pressing portion 78 includes a plurality of pressing grooves 78a formed on the inner wall of the connecting block 77, a ball member 78b provided so as to partially protrude from the pressing groove portion 78a, a ball member 78b, And a first elastic member 78c which is interposed between the inner wall of the pressing groove portion 78a and the inner wall of the pressing groove portion 78a so as to project the ball member 78b toward the first connecting shaft 74a to bring the connecting block 77 into close contact with the connecting cap 74 .

The ball member 78b protrudes in the direction of the first connection shaft 74a by the elastic force of the first elastic member 78c and when the ball member 78b presses the first connection shaft 74a, The connection block 77 and the connection cap 74 come into close contact with each other and the electrical connection is maintained while the connection block 77 is pushed to the connection cap 74 side.

The rotary connection portion 80 includes a seating cap 82 provided on the support 10 and having a second connection shaft 82a protruding outward from the center of the inner wall and a second connection shaft 82b formed on the end of the second connection shaft 82a, A connecting cap 84 which forms an inner space and a second connecting shaft 82a which is slidably inserted into the inner groove of the connecting cap and the seating cap 82 so as to be slidably inserted into the inner groove, And a connection block 86 to which the cradle 52 is connected.

A mount jig 54 is provided at the lower end of the connecting rod 54 and a connecting rod is provided at the lower end of the mounting jig 54 so that the jumping wire 50 is rotatably connected to the lower end of the connecting rod. 50 and the pillars 10 can be held at a constant interval and the jump line 50 can be prevented from being deformed or damaged while the jump line 50 is rotated.

The rotation driving unit 90 includes a driving cap 92 inserted into one of the pair of seating grooves 14 facing the inner wall of the driving groove 12, And an insertion shaft 96a slidably connected to a driving space portion 92a formed on a shaft protruding from a central portion of the driving cap 92. The insertion cap 96 is inserted into the other seating groove portion 14, A second elastic member 98 which is interposed between the insertion cap 92 and the insertion cap 96 and presses the driving cap 92 and the insertion cap 96 toward the seating groove 14, A motor 94 provided on the strut 10 and provided with a power to drive the connecting screw portion 92b to be connected to the connecting screw portion 92b; And a drive shaft 92c rotatably connected to the drive shaft 50.

When the power is supplied to the motor 94 by the driving signal transmitted from the control unit, the thread 94a formed on the rotary shaft of the motor 94 and the connection thread 92b formed on the driving cap 92 are engaged The power of the motor 94 is transmitted to the driving cap 92. When the driving cap 92 is rotated, the driving shaft 92c is rotated to move the jump line 50 from one side of the support 10 to the other side, And moves the jump line 50 as if it is skipping the rope.
The second elastic member 98 is compressed while the drive cap 92 and the insertion cap 96 are pressed and the inner side of the drive groove portion 12 The second elastic member 98 is restored to its original state and the insertion cap 96 and the driving cap 92 are pushed in both directions so that the insertion cap 96 and the driving cap 92 are inserted, The rotation driving portion 90 is installed while the driving shaft 96 and the driving cap 92 are in close contact with the inner wall of the pair of seat grooves 14. [

The present embodiment is characterized in that the operation bar 116 which is engaged with the cradle 52, the penetration support portion 112b through which the operation bar 116 passes, and the fastening groove portion 112a to which the jump line 50 is engaged And a fastening groove 114a which is rotatably connected to the operation bar 116 and is pressed against the fastening groove 112a so as to be inserted into the fastening groove 112a, And a clamping part 118 for connecting the actuating bar 116 and the mounting bracket 54. The clamping part 114 includes a clamping part 114 for clamping the clamping part 114,

Therefore, when the jump line 50 is connected to the cradle 52, the cradle 52 is tightly coupled to the cradle 52 and then the cradle 112a is fastened with the jump line 50, To move the locking member 114 toward the locking groove 112a so that the jump line 50 passes through the hole formed by the locking groove 112a and the locking member 114. [

As described above, when the cradle 52 and the jump line 50 are combined, it is possible to prevent the jump line 50 from being separated from the cradle 52 while the bird-fighting operation is proceeding.

The latching part 118 includes a first semicircular member 118a fixed to the upper end of the operation bar 116 and formed in a semicircular shape and a second semicircular member 118b fixed to the upper end of the first semicircular member 118a by a hinge shaft 118c A second semicircular member 118b having a ring shape when the first semicircular member 118a and the second semicircular member 118b are connected to each other and connected to the first semicircular member 118a, And a locking part 117 connecting the lower end of the first semicircular member 118a and the lower end of the second semicircular member 118b to connect with the cradle 52 when they are disposed closely to each other.

Therefore, when the holder 52 is engaged with the latching portion 118, the second semicircular member 118b is rotated by being twisted away from the first semicircular member 118a, The lower end of the second semicircular member 118b is rotated upward while rotating around the second cam 118c, whereby the locked state of the engaging portion 118 is released.

At this time, a hole portion formed at the lower end of the mount 52 is inserted into the first semicircular member 118a, and the lower end of the second semicircular member 118b is rotated downward so that the first semicircular member 118a, And the lower end of the member 118b is coupled again by the lock portion 117. [

The locking portion 117 includes a fixing protrusion 117a which is provided so as to protrude and retract from the lower end of the first semicircular member 118a and a fixing protrusion 117a which is formed at the lower end of the second semicircular member 118b so that the fixing protrusion 117a is inserted. A releasing wire 117c extending from the rear surface of the fixing protrusion 117a to the outside of the first semicircular member 118a and a releasing wire 117b interposed between the fixing protrusion 117a and the first semicircular member 118a And a third elastic member 117e for pressing the fixing protrusion 117a toward the fixing groove portion 117b.

When the worker pulls the lever member 117d, the fixing protrusion 117a retracted by the release wire 117c is inserted into the first semi-circular member 118a so that the first semi-circular member 118a and the second semi-circular member 118b When the operator releases the lever member 117d, the fixing protrusion 117a is protruded to the outside of the first semicircular member 118a by the restoring force of the third elastic member 117e, The first semicircular member 118a and the second semicircular member 118b are locked to each other by being inserted into the fixing groove 117b of the first semicircular member 118b.

The unexplained reference numeral 116a is a threaded portion 116a formed on the operation bar 116 and bolted to the penetrating support portion 112b.

As a result, it is possible to effectively prevent the bird from sitting on the pillar, to prevent the jump line from being broken or the clearance between the jump line and the distribution line to be generated during the bird-fighting operation, to easily connect or disconnect the distribution line and the jump line, It is possible to provide an unlocking type live wire clamp for a distribution line which can prevent the clamp from being loosened during the erasure operation.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

Further, although the wire-clamping type wire-clamp for a distribution line has been described as an example, this is merely an example, and the live wire clamp of the present invention can also be used for products other than the wire-rod clamp for the distribution line.

Accordingly, the true scope of the present invention should be determined by the following claims.

10: support 12: drive groove
14: seat groove portion 32: first distribution line
32a: first insulator 32b: first connecting rod
34: second distribution line 34a: second insulator
34b: second connecting rod 50: jump line
52: Cradle 54: Cradle
70: rotation connecting portion 72: cap member
74: connecting cap 74a: first connecting shaft
76: Finishing cap 77: Connection block
78: pressing portion 78a:
78b: a ball member 78c: a first elastic member
80: rotation connecting portion 82:
82a: second connecting shaft 84: connecting cap
86: connection block 90: rotation drive
92: driving cap 92a:
92b: connection thread portion 92c:
94: motor 94a: thread
96: insertion cap 96a: insertion axis
98: second elastic member

Claims (3)

A first connecting rod rotatably installed on one side of the support by a rotation connection;
A first insulator provided on the first linkage;
A first distribution line rotatably connected to the first connection block by a rotary connection;
A second connecting rod rotatably installed on the other side of the strut by a rotation connecting portion;
A second insulator provided on the second linkage;
A second distribution line rotatably connected to the second connection block by the rotation connection portion;
And electrically connects the rotation connection portion connected to the first distribution line and the rotation connection portion connected to the second distribution line so as to electrically connect the first distribution line and the second distribution line, A jump line rotatably connected to the distribution line and the second distribution line;
A cradle connecting the strut with the jump line and rotatably installed on the strut;
A mounting bracket installed on the cradle;
And is connected to the jump line, and when the bird sits on the jump line, the first insulator, the second insulator, the first connecting rod, the second connecting rod, the cradle, or the mounting insulator A rotation driving unit for detecting the jumping line and rotating the jumping line from one side of the strut to the other side or the other side of the strut to prevent the bird from sitting; And
A body member having an operation bar engaged with the cradle, a penetration support portion through which the operation bar passes, and a coupling groove portion to which the jump line is engaged; and a restraining groove portion rotatably connected to the operation bar, A clamping member having a clamping member for clamping the jump line inserted into the clamping groove, and a clamping part connecting the clamping clamp and the actuating bar,
[0027]
A first semicircular member fixed to an upper end of the operation bar and formed in a semicircular shape;
A second semicircular member rotatably connected to the upper end of the first semicircular member by a hinge shaft and formed in a semicircular shape and having a ring shape when connected to the first semicircular member; And
And a lock portion connecting the lower end of the first semicircular member and the lower end of the second semicircular member and connecting the lower end of the first semicircular member and the lower end of the second semicircular member to the cradle when the lower ends of the first semicircular member and the second semicircular member are disposed in close contact with each other,
The locking portion
A fixing protrusion provided so as to protrude / retract from a lower end of the first semicircular member;
A fixing groove formed at a lower end of the second semicircular member to insert the fixing protrusion;
A release wire extending from the back surface of the fixing projection to extend outside the first semicircular member; And
And a third elastic member interposed between the fixing protrusion and the first semicircular member and pressing the fixing protrusion toward the fixing groove,
The rotation connecting portion includes:
A cap member into which a cable of the power distribution line is inserted;
A connection cap tightly coupled to the inner wall of the cap member and electrically connected to the cable;
A finishing cap coupled to a first connection shaft extending outwardly from an inner wall of the connection cap and disposed to be symmetrical with the cap member;
A connection block rotatably installed between the connection cap and the finishing cap and having jump lines connected to the outer walls; And
And a pressing portion for pressing the connection block toward the connection cap side to electrically connect the connection block and the connection cap,
The pressing portion
A plurality of pressing grooves formed on an inner wall of the connection block;
A ball member protruding from the pressing groove; And
And a first elastic member interposed between the ball member and the inner wall of the pressing groove portion to project the ball member in the direction of the first connection axis to bring the connection block into close contact with the connection cap,
The rotation drive unit includes:
A driving cap inserted into the seating groove portion of one of the pair of seating groove portions which are formed to face each other on the inner wall of the driving groove portion;
An insertion cap slidably connected to a driving space formed on a shaft protruding from a central portion of the driving cap and inserted into the other of the seating recesses;
A second elastic member interposed between the driving cap and the insertion cap to press the driving cap and the insertion cap toward the seating groove portion, respectively;
A motor provided on the support and provided with a power, a rotation shaft that is gear-connected to a connection thread formed on an outer wall of the drive cap;
And a driving shaft extending from the circumference of the driving space to the outside of the strut and rotatably connected to the jump line. delete delete

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