JPH0514675Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a clamp for electric wires that is used, for example, to remove a part of the covering layer of an overhead power distribution line and grasp the exposed conductor, and to connect a grounding wire. It concerns metal fittings.

(Prior Art) FIG. 3 is a front view of an example of a conventional clamp fitting for electric wires.

In the drawings, reference numeral 101 denotes a clamp body, which has a wire gripping groove 102 formed in its upper part and a lower metal fitting 104 in its lower part. 201 is a clamp foot,
A wire gripping groove 202 is formed at a position opposite to the wire gripping groove 102 of the clamp body 101, and a claw portion 203 provided on the side engages with the inner side 103 of the clamp body 101, and the clamp presser 201 guides this. move up and down as A threaded rod 204 passes through the clamp body 101, the clamp presser 201 is fixed to the upper end of the screw rod 204, and a grip portion 205 is integrally provided at the lower end. Also, the threaded rod 204 is attached to the lower metal fitting 104 of the clamp body 101.
It is screwed into a threaded part provided inside.

When gripping electric wires, as shown in the figure, the wire gripping groove 102 of the clamp body 101 is hooked onto the electric wires A, and in this state, the screw rod 204 is rotated by gripping the grip part 205 at the lower end. Therefore, the clamp holder 201 rises and grips the electric wires A between the wire grip groove 102 of the clamp body 101 and the wire grip groove 202 of the clamp holder 201.

(Problem to be Solved) The above-mentioned clamp fitting is configured so that it can be applied to electric wires ranging from fairly large diameter to small diameter electric wires.
On the other hand, the clamp foot 201 is raised and lowered only by the rotation of the threaded rod 204. Therefore, especially when gripping a small-diameter electric wire, it is necessary to apply a lot of rotation to the threaded rod 204, which takes time to grip the electric wire. It was a dangerous operation as it involved following the police.

(Means for Solving the Problems) The present invention solves the above-mentioned problems and provides a clamp fitting that shortens the time required to grip the wire.The feature is that a wire gripping groove is formed at the top. The clamp body has a lower metal fitting at the bottom.
A clamp holder that has a wire gripping groove formed in a position opposite to the wire gripping groove of the clamp body and is movable in the vertical direction using the inside of the clamp body as a guide, and a screw that passes through the lower metal fitting of the clamp body and fixes the clamp holder at the upper end. A rod, a ratchet fitting attached to the outer circumference of the threaded rod and passing through the lower fitting of the clamp body, and a spring attached to the outer circumference of the threaded rod between the lower surface of the clamp presser and the upper surface of the lower fitting of the clamp body. By rotating the threaded rod, the ratchet fitting attached to the outer periphery also rotates, and the locking pin provided on the ratchet fitting comes off the bottom surface of the lower metal fitting of the clamp body and enters the groove provided on the bottom surface, causing it to become engaged. When the clamp is released from the stopped state, the clamp holder moves rapidly due to the action of the spring, temporarily gripping the wires between the wire gripping groove of the clamp body, and the engaging member provided at the opposite position of the ratchet groove of the ratchet fitting engages. The pin engages with the ratchet groove to prevent the clamp holder from descending, and by rotating the threaded rod, the clamp holder rises to completely grip the wires.

FIG. 1 is a front view of a specific example of the clamp fitting according to the present invention, FIG. 2 (a) is a vertical cross-sectional view of the main part, and FIG.

In the drawings, reference numeral 1 denotes a clamp body, which has a gripping groove 11 for electric wires A formed in its upper part, and a lower metal fitting 13 provided in its lower part. Reference numeral 2 denotes a clamp holder, which has a wire gripping groove 21 formed at a position opposite to the wire gripping groove 11 of the clamp body 1, and an engaging claw 22 provided on the side thereof engages with the inner side 12 of the clamp body 1. This is used as a guide to move up and down. Reference numeral 3 denotes a threaded rod that passes through the lower metal fitting 13 of the clamp body 1, and the clamp presser 2 is attached to the upper end.
, and an operating rod mounting bracket 4 is fixed to the lower end. Reference numeral 5 denotes a ratchet metal fitting, which is mounted on the outer periphery of the threaded rod 3 and passes through the lower metal fitting 13 of the clamp body 1. A ratchet groove 51 is formed on one side of the ratchet fitting 5, and a locking pin 52 is provided on the opposite side. 7 is a spring mounted between the lower surface of the clamp presser 2 and the upper surface of the lower metal fitting 13 of the clamp body 1 and on the outer periphery of the threaded rod 3; 8 is a spring washer mounted on the outer periphery of the threaded rod 3. .

(Function) In FIG. 1, the clamp main body 1 and the clamp body 2 have a gap between the wire grip groove 11 and the wire grip groove 21 of the clamp foot 2 in a standby state. At this time, the locking pin 52 provided on the ratchet metal fitting 5 is connected to the lower metal fitting 13 of the clamp body 1.
The spring 7 is in a compressed state.

Next, the operation and effect when gripping electric wires will be explained.

Operation rod mounting bracket 4 provided at the lower end of the threaded rod 3
Attach an operating rod (not shown) to the clamp, raise the clamp fitting to the installation position of the electric wires A, and hook the electric wires A into the wire gripping groove 11 of the clamp body 1.

When the operating rod is rotated in this state, the threaded rod 3 is rotated, and at the same time, the ratchet fitting 5 mounted on the outer circumference thereof is rotated. As a result, the locking pin 52 of the ratchet fitting 5 also rotates, and as shown in FIG. Solve. The unlatched clamp presser 2 rises all at once due to the expansion action of the spring 7, and temporarily holds the electric wires A between it and the electric wire gripping groove 11 of the clamp body 1. At this time, the engagement pin 61 of the engagement member 6 provided at a position opposite to the ratchet groove 51 of the ratchet fitting 5 is pushed into the ratchet groove 51 by the action of the spring 62.
, and prevents the clamp foot 2 from lowering.

When the threaded rod 3 is rotated in this state, the clamp foot 2 is further raised by the screw action, and the wires A are firmly held between the wire gripping groove 21 of the clamp foot 2 and the wire gripping groove 11 of the clamp body 1. I will do it.

When removing the clamp fitting from wires A,
When the threaded rod 3 is rotated in the opposite direction to the above rotation direction,
The engagement between the ratchet groove 51 of the ratchet fitting 5 and the locking pin 61 is disengaged. When the operating rod is pulled in this state, the threaded rod 3, which has been raised, is lowered, and the clamp foot 2 is also lowered. When the locking pin 52 of the ratchet metal fitting 5 comes out from the bottom surface of the lower metal fitting 13 of the clamp body 1, when the threaded rod 3 is rotated, the locking pin 52 comes into contact with the lower surface of the lower metal fitting 13, and the Return to state. In this state, the clamp body 1 can be removed by removing the wire gripping groove 11 from the wires A.

Although the above description has been made regarding the case where the operation is performed from the ground using the operation stick, it is of course possible to grip the electric wires by directly operating the electric wires at the position where the electric wires are installed without using the operation stick.

(Effects of the invention) As explained above, according to the clamp fitting of the invention, the electric wires are momentarily held temporarily by the action of the spring, and then the electric wires are completely held by the slight rise of the clamp foot by the action of the screw. Since the electric wires can be gripped, the time required for gripping the electric wires is significantly shortened, and the time remains approximately constant regardless of the diameter of the electric wires.

Furthermore, by connecting the operation sticks, it becomes possible to attach the electric wires from the ground, which is extremely effective from the standpoint of safety.

[Brief explanation of the drawing]

FIG. 1 is a front view of a specific example of a clamp fitting according to the present invention. FIG. 2A is a vertical cross-sectional view of the main part of FIG. 1, and FIG. 2B is a cross-sectional view of the lower metal part of the clamp body. FIG. 3 is a front view of an example of a conventional clamp fitting. 1... Clamp body, 11... Wire gripping groove, 1
2...Inner part, 13...Lower metal fitting, 2...Clamp holder, 21...Wire gripping groove, 22...Engaging claw portion, 3...Threaded rod, 4...Operation rod mounting bracket, 5...
...Ratchet fitting, 51 ...Ratchet groove, 52
... Locking pin, 6 ... Ratchet engagement member, 61
...Engaging pin, 62...Spring, 7...Spring, 8...Spring washer.

Claims (1)

[Scope of utility model registration request] A clamp body 1 has a wire gripping groove 11 formed at the upper part and a lower metal fitting 13 at the lower part, a wire gripping groove 21 is formed at a position opposite to the wire gripping groove 11 of the clamp body 1, and the inner part 12 of the clamp body 1 is used as a guide. A vertically movable clamp holder 2, a threaded rod 3 that passes through the lower metal fitting 13 of the clamp body 1 and has the clamp holder 2 fixed to its upper end, and is mounted on the outer periphery of the threaded rod 3 and penetrates the lower metal fitting of the clamp body 1. A ratchet fitting 5 is provided, and a spring 7 is installed on the outer periphery of the threaded rod 3 between the lower surface of the clamp foot 2 and the upper surface of the lower fitting 13 of the clamp body 1. The ratchet metal fitting 5 attached above also rotates, and the locking pin 52 provided on the ratchet metal fitting 5 comes off the lower surface of the lower metal fitting 13 of the clamp body 1, and the groove 14 formed on the lower surface is removed.
Enter the spring 7 to release the locking condition and release the spring 7.
Due to this action, the clamp presser 2 suddenly moves to temporarily grip the wire between it and the wire gripping groove 11 of the clamp body 1, and at the same time, the engaging member 6 provided at a position opposite to the ratchet groove 51 of the ratchet fitting 5 is engaged. The pin 61 engages with the ratchet groove 51 to prevent the clamp holder 2 from descending, and by further rotating the threaded rod 3, the clamp holder 2 rises to completely grip the wires A. Features clamp fittings for electric wires.