JP2009044890A - Electric-wire equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide electric-wire equipment that attains protection of electric wire, as well as has long-term durability. <P>SOLUTION: The electric-wire equipment is used for pressingly holding one end part and the other end part of an electric wire D by the movement of a screw-fastened inserting part 2a. A rotational-force transmission part 3 for imparting a rotational force to the inserting part 2a is provided at the end part on the outer peripheral side Q of an electric-wire mounting part of the inserting part 2a. The rotational-force transmission part has a cylinder-forming driven rotary part 3b and a cylindrer-forming drive rotary part 3a surrounding the outer peripheral face of the driven rotary part 3b, while being mounted freely rotatably along the outer peripheral face. Each locking part 11 is provided on the inner peripheral face of the drive rotary part 3a. Each part 12 to be locked is provided on the outer peripheral face of the driven rotary part 3b so as to be locked with each locking part 11, when the drive rotary part 3a is rotated. Each part to be locked climbs over each locking part, by releasing the locking state when a stress applied to a pressing part 2b from the electric wire D becomes larger than frictional resistance with each locking part 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electric wire fixture in an aspect in which an electric wire, in particular, a distribution line is tightened.

For example, there is an electric wire equipment that is fastened to an electric wire (distribution line) typified by a bird harm prevention tool of JP-A-2002-176901.
However, since this type of electric wire equipment usually tightens a clamping means such as a clamp firmly to an electric wire, the portion tightened against the electric wire often bites strongly and damages the surface of the electric wire coating. Along with the tightening of the electric wire, a strong deformation force is also applied to the side of the electric wire equipment, and there is a concern in terms of durability when using the electric wire and the electric wire equipment for a long time.
JP2002-176901

  In view of the above-described problems, the present invention is to provide an electric wire equipment that protects electric wires and has long-term durability.

  The invention according to claim 1 of the present invention surrounds the outer periphery of the electric wire, and the insertion portion is movable between the electric wire attachment portion that presses one end of the outer peripheral surface of the electric wire, and the inner peripheral side and the outer peripheral side of the electric wire attachment portion. The wire holding part that presses the other end of the outer peripheral surface of the electric wire with the pressing part at the inner peripheral side of the electric wire attaching part of the insertion part, and the rotational force when the insertion part is screwed. A rotating force transmitting portion to be applied, wherein the rotating force transmitting portion is provided at an end portion of the insertion portion on the outer periphery side of the wire mounting portion, and forms a cylindrical driven rotating portion; And a cylindrical driving rotating portion that surrounds the outer peripheral surface of the driven rotating portion and is rotatably attached along the outer peripheral surface. A locking portion is provided on the inner peripheral surface of the driving rotating portion. The outer peripheral surface of the driven rotating unit is locked with the locking unit when the driving rotating unit rotates and is driven. When the wire is tightened together with the rolling part, and the stress applied to the pressing part from the tightened electric wire exceeds the frictional resistance in the locked state with the locked part, the locked state with the locked part is It is characterized in that a locked portion that is released and overcomes is provided.

  The invention according to claim 2 of the present invention is characterized in that the locking portion and the locked portion are formed in a tapered shape or a rounded shape on the side where the locking portion and the locked portion are locked.

According to the present invention, for example, when the indirect live wire gripping tool is connected and the drive rotating portion is rotated, the stress received by the pressing portion that pressed the electric wire is in the locked state of the locking portion and the locked portion. If the friction resistance is larger than the frictional resistance of the driven rotating part, the locking part of the driving rotating part gets over the locked part of the driven rotating part with the rotation of the driving rotating part. The drive rotating part that was rotating together runs idle. Thereby, since the excessive press by this electric wire equipment with respect to the electric wire at the time of attachment work is prevented, it becomes the structure which does not apply an excessive load to the protection of the outer peripheral surface of an electric wire, or this electric wire equipment.
According to the second aspect of the present invention, when the locking portion and the locked portion are locked, the pressing portions are formed on the sides to be locked in a tapered shape or a round shape. When the stress applied to the wire becomes larger than the rotational force, the locking portion smoothly gets over the locked portion, so that it is possible to further reduce an excessive load on the electric wire and the electric wire equipment during the mounting operation.

Hereinafter, an embodiment of an electric wire equipment of the present invention will be described based on the drawings.
In addition, this embodiment demonstrates the bird damage prevention tool as an example of this electric wire equipment tool.
1 (a) is a longitudinal sectional view of the electric wire equipment, and FIG. 1 (b) is a transverse sectional view showing the main part by crossing the line AA in FIG. 1 (a). 2 is a perspective view showing the state of use of the electric wire equipment, and FIGS. 3A to 3D are views for locking and releasing the locking portion of the driving rotating portion and the locked portion of the driven rotating portion. 4 (a) to 4 (d) are explanatory views showing the installation procedure of the electric wire equipment, and FIGS. 5 (a) and 5 (b) are other implementations of the electric wire equipment. It is a front view which shows a form.

As shown in FIG. 2, the electric wire fixture includes an electric wire attachment portion 1 that surrounds three sides of the outer circumference of the electric wire D, an electric wire holding portion 2 that moves up and down and holds the electric wire D between the electric wire attachment portion 1, and an electric wire holding portion. It consists of a rotational force transmission part 3 that moves 2 up and down.
As shown in FIGS. 1 (a) and 2, the electric wire mounting portion 1 has an overall shape of an electric wire D from an upper piece 1a and a lower piece 1c and a vertical piece 1b connecting one side of the upper piece 1a and the lower piece 1c. It has a substantially U-shape that surrounds the outer three sides, and has a receiving portion 5 for a wire D that is recessed in a mountain shape at a substantially central position on the inner peripheral side P of the wire mounting portion of the upper piece 1a. And the one side which the electric wire attachment part 1 opens becomes the inlet E for receiving the electric wire D in the electric wire attachment part inner peripheral side P, when attaching this electric wire fixture. In addition, a lid 4 for preventing the electric wire D from being detached from the electric wire attachment portion 1 is attached to the intake E so as to be opened and closed. Specifically, a shaft portion 6 is provided on the intake E side of the upper piece 1a. The upper end portion of the lid 4 is pivotally supported by the shaft portion 6 so as to be rotatable in the horizontal axis, while the fitting hole 7a (FIGS. 1A and 1B and FIGS. 4A and 4B is formed in the lower end portion of the lid 4. )) And is fitted to the fitting protrusion 7b provided at the end of the lower piece 1c on the intake E side.
In addition, the code | symbol 13 is an upright part for extending | stretching the wire W, and the code | symbol 15 is a holding piece used when auxiliary | assistantly grasping with another indirect hot wire holding tool.

  The electric wire holding portion 2 includes a pressing portion 2b that presses the electric wire D and an insertion portion 2a that forms a screw shape extending vertically from the pressing portion 2b. And the rotational force transmission part 3 consists of the drive rotation part 3a which has the connection part 10 with an indirect hot wire holding tool, and the driven rotation part 3b provided in the edge part of the electric wire attachment part outer peripheral side Q of the said insertion part 2a. It has become. Furthermore, the lower piece 1c of the electric wire attachment portion 1 is provided with a guide hole G that penetrates the inner peripheral side P and the outer peripheral side Q of the electric wire attachment portion, and the guide hole G has an insertion hole in which a screw groove is cut. The upper side of the driven rotating part 3b having a cylindrical shape with a center 9 is rotatable substantially horizontally and cannot be pulled out by the upper and lower flanges. The insertion hole 9 of the driven rotating part 3b has been described above. The insertion part 2a is attached to be movable up and down. And the lower part of the driven rotation part 3b is extended perpendicularly | vertically downward from the insertion part 2a like FIG.1 (b) and FIG. Locked portions 12 projecting outward from the outer wall surface are provided on the outer wall surface of the driven rotating portion 3b. The locked portion 12 is inserted into the insertion portion as shown in FIG. The locked portion side taper portion 12a is provided on the side rotated to loosen 2a, and the locked portion side taper portion 12a of the driven rotating portion 3b is moved from the loosened portion 2a toward the tightened portion. The slope gradually increases from the outer wall surface, and is a step that stands substantially perpendicular to the outer wall surface of the driven rotating portion 3b on the side closer to the fastening portion 2a than the top of the locked portion side taper portion 12a. The locked part side reverse rotation prevention part 12b which makes a shape is provided.

  On the other hand, the drive rotation unit 3a has a cylindrical shape surrounding the entire outer wall surface of the driven rotation unit 3b. In this embodiment, the drive rotating portion 3a has a substantially hexagonal shape when viewed from the bottom, and the upper end portion of the peripheral wall of the drive rotating portion 3a has a flange portion 14 whose upper end is bent inwardly at 180 °. There are two intervals, and the bent end portions of the flange portions 14 are locked to the upper end surface of the driven rotation portion 3b protruding from the insertion portion 2a to the outer peripheral side. As a result, the drive rotation unit 3a is prevented from being detached from the driven rotation unit 3b, and the drive rotation unit 3a is attached coaxially with the insertion unit 2a so as to be rotatable in the vertical axis. Further, the inner wall surface of the drive rotating portion 3a is provided with a latching portion 11 projecting inwardly from the inner wall surface, and each latching portion 11 is locked as described above as shown in FIG. Contrary to the part-side taper part 12a, it has a locking part side taper part 11a that gradually increases in the direction from tightening to loosening, and heading toward the loosening from the top of the locking part side taper part 11a. On the side, there is provided a locking portion side reverse rotation preventing portion 11b having a step shape that stands substantially perpendicularly from the inner wall surface of the cylindrical hole H of the drive rotating portion 3a.

And the drive rotation part 3a and the driven rotation part 3b mentioned above operate | move as follows by operation of an indirect hot wire holding tool.
Here, the star mark in FIG. 3A is shown as an indirect hot wire gripping tool, the circle mark is shown as the reference position of the drive rotation unit 3a, and the triangle mark is shown as the reference position of the driven rotation unit 3b, and the drive rotation unit 3a and driven rotation are shown. The operation state of the part 3b will be described.
Specifically, when the state shown in FIG. 3A is set as the reference position and the connection portion K on the indirect live wire gripping tool side is connected to the connection portion 10 of the drive rotating portion 3a and operated, the state shown in FIG. As described above, the locking portion 11 of the drive rotation portion 3a is locked to the locked portion 12 of the driven rotation portion 3b. Further, as shown in FIG. 3 (c), the rotational force is further applied to the driving rotating portion 3a from the indirect live wire gripping tool to the locking portion 11 and the locked portion 12 in the locked state. The rotating part 3a and the driven rotating part 3b rotate together. When a rotational force is further applied to the drive rotating portion 3a, the locking portion side taper portion 11a of the locking portion 11 and the locked portion side taper portion 12a of the locked portion 12 come into contact with each other, as shown in FIG. As described above, when a rotational force exceeding the frictional resistance at the time of contact with each other is applied from the drive rotating portion 3a to the driven rotating portion 3b, the locking portion 11 gets over the locked portion 12, and the outside of the driven rotating portion 3b. It moves in the direction of tightening the wire holding part 2 until it hits the next locking part 11 on the wall surface.
In addition, when the above-mentioned driving rotation part 3a is rotated in the reverse direction, the locking part side reverse rotation prevention part 11b of the locking part 11 and the locked part side reverse rotation of the locked part 12 are performed. Since the prevention part 12b is locked in a state where it cannot be overcome, the electric wire holding part 2 can be easily loosened from the electric wire D.

The attachment procedure of the electric wire equipment of this invention comprised as mentioned above is demonstrated based on Fig.4 (a)-(d).
As a first procedure, as shown in FIG. 4 (a), the lid 4 is flipped up to open the wire inlet E of the wire mounting portion 1, and the wire is connected to the receiving portion 5 on the inner peripheral side P of the opened wire mounting portion. Hit D.
As a second procedure, as shown in FIG. 4B, the connection part K of the indirect live wire gripping tool is connected to the connection part 10 of the rotational force transmission part 3 (see also FIG. 3A). Thereby, the drive rotation part 3a of the rotational force transmission part 3 becomes rotatable in any direction of either the tightening direction or the loosening direction according to the operation of the indirect live wire gripping tool.
As a third procedure, as shown in FIG. 4 (c), the indirect hot wire gripping tool is operated to rotate the electric wire holding part 2 to move the pressing part 2 b upward, and the pressing part 2 b is moved to the receiving part 5. Press against the lower end of the applied wire D.
As a fourth procedure, as shown in FIG. 4 (d), the indirect live wire gripping tool is continuously operated, and the locking portion 11 of the driving rotating portion 3a of the rotational force transmitting portion 3 is locked to the locked portion 12 of the driven rotating portion 3b. At the stage of overcoming, the operation of the indirect live wire gripping tool is stopped and the connecting portion K is removed from the connecting portion 10 of the rotational force transmitting portion 3 (see also FIG. 3D).
By passing through the above procedure, the attachment process to the electric wire D of the electric wire equipment by this implementation is completed.

  The electric wire equipment of the present invention is not limited to the above-described bird harm prevention equipment. For example, as shown in FIG. 5 (a), a means for preventing tightening can be applied to a high-voltage access prevention device attached to the electric wire D (see also FIG. 5 (b)), and other electric wires D are attached by tightening. It can also be applied to all types of electric wire equipment. In addition, in this embodiment, the locking portion 11 and the locked portion 12 are formed in a semicircular arc shape, and a side 11a that locks with the locked portion 12 is formed in a round shape, The side 12a which latches with the latching | locking part 11 of the part 12 is formed in the taper shape. About the latching | locking part 11 and the to-be-latched part 12, you may form the side 11a, 12a which forms in a semicircular arc shape and latches each other in round shape, for example, The side 11a of the locking portion 11 that locks with the locked portion 12 may be formed in a tapered shape, and the side 12a of the locked portion 12 that locks with the locking portion 11 may be formed in a round shape.

(A) is the front view which shows the state which attached the electric wire equipment tool (bird damage prevention tool) of this invention to the electric wire, (b) is the AA line cross-sectional view in (a), (C) is an enlarged cross-sectional view showing B in (b). It is a perspective view showing the whole electric wire equipment (bird harm prevention tool) of the present invention. (A) (b) (c) (d) is a cross-sectional view which respectively shows the operating state of the rotational force transmission part of this invention. (A) (b) (c) (d) is a perspective view which respectively shows the attachment procedure of the electric wire equipment (bird damage prevention tool) of this invention. (A) is a front view which shows other embodiment (high voltage | pressure approach prevention tool) of the electric wire equipment of this invention, (b) is the CC sectional view taken on the line of (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric wire attachment part 2 Electric wire holding part 2a Insertion part 2b Press part 3 Rotational force transmission part 3a Drive rotation part 3b Driven rotation part 11 Locking part 11a Locking part side taper part (side locked with locked part)
11b Locking part side reverse rotation prevention part (side locked with locked part)
12 Locked portion 12a Locked portion side taper portion (side locked with lock portion)
12b Locked part side reverse rotation prevention part (side locked with locking part)
D Electric wire P Electric wire attachment part inner circumference side Q Electric wire attachment part outer circumference side

Claims (2)

An electric wire attachment portion (1) that surrounds the outer periphery of the electric wire (D) and presses one end of the outer peripheral surface of the electric wire (D), an inner peripheral side (P) and an outer peripheral side (Q) of the electric wire attachment portion (1) And the other end of the outer peripheral surface of the electric wire (D) at the pressing portion (2b) on the inner peripheral side (P) of the electric wire attaching portion of the insertion portion (2a). An electric wire equipment provided with an electric wire holding part (2) for pressing the part and a rotational force transmitting part (3) for applying a rotational force when the insertion part (2a) is screwed.
The rotational force transmitting portion (3) is provided at the end of the insertion portion (2a) on the outer periphery side (Q) of the electric wire attachment portion, and has a cylindrical driven rotating portion (3b) and its driven rotating portion ( 3b) and a cylindrical drive rotating portion (3a) that surrounds the outer peripheral surface and is rotatably attached along the outer peripheral surface, and a locking portion is provided on the inner peripheral surface of the drive rotating portion (3a). (11) is provided, and the outer peripheral surface of the driven rotating portion (3b) is locked with the locking portion (11) when the driving rotating portion (3a) rotates, and the driven rotating portion (3b). When the wire (D) is tightened together and the stress applied to the pressing portion (2b) from the tightened wire (D) exceeds the frictional resistance in the locked state with the locking portion (11), An electric wire facility characterized in that a locked portion (12) is provided to release the locked state with the locking portion (11) and get over . The locking portion (11) and the locked portion (12) are characterized in that the sides (11a, 12a) to be locked with each other when in the locked state are formed in a taper shape or a round shape. The electric wire equipment according to claim 1.

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