JP2014121159A - Clip for indirect live wire construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clip for an indirect live wire construction, which is excellent in operationality.SOLUTION: A clip 10 comprises: a pair of opening/closing members 1, 2 and a torsion coil spring 3. In the opening/closing members 1, 2, a base end parts are rotatably connected to open/close tip parts. The opening/closing members 1, 2 can hold an electric wire W or an insulation sheet S between inner walls thereof. The torsion coil spring 3 energizes the opening/closing members 1, 2 into the direction to close the tip parts thereof. The opening/closing member 1 includes a first recess 13h, into which a tip claw 71a of a grip arm 7a can be inserted, on an external wall. The opening/closing member 2 includes a second recess 23h, into which a tip claw 71b of a grip arm 7b can be inserted, on an external wall. When the pair of tip claws 71a, 71b are inserted into the first recess 13h and the second recess 23h, the tip parts of the opening/closing members 1, 2 are opened, and the pair of grip arms 7a, 7b are closed, the opening/closing members 1, 2 can be closed.

Description

  The present invention relates to a clip for indirect hot wire construction. In particular, the present invention relates to a structure of an indirect hot-wire construction clip that can indirectly hot-wire an uninterruptible high-voltage distribution line using an insulating operation rod or the like.

  The clip for indirect hot-wire construction is operated by being connected to an indirect hot-wire tool such as an insulation operation rod. For example, the insulation sheet placed on the high-voltage distribution line during charging does not leave the high-voltage distribution line during indirect hot-wire construction. Can be gripped. And the clip for indirect hot wire construction can temporarily fix an insulating sheet to a high voltage distribution line.

  As such a clip for indirect hot-wire work, if you try to close the grip of the clip for indirect hot-wire work with a pair of opening and closing grip arms provided at the tip of the insulating operation rod, the clip for indirect hot-wire work An indirect live-line work clip is disclosed in which the indirect live-line work clip is prevented from sliding or slipping with respect to the gripping arm by sliding the grip part of the indirect live-line work (see, for example, Patent Document 1). ).

JP 2010-263755 A

  FIG. 8 is a front view of a clip for indirect hot wire construction according to Patent Document 1. FIG. FIG. 8 of the present application corresponds to FIG. Referring to FIG. 8, a clip for indirect hot wire construction (hereinafter abbreviated as a clip) 8 according to Patent Document 1 is composed of a pair of strip-like opening / closing members 81 and 81 and a torsion coil spring 82. . The pair of opening / closing members 81 and 81 are rotatably connected with a rotation center 82f of the torsion coil spring 82 as a fulcrum.

  Referring to FIG. 8, the opening / closing member 81 has a holding portion 81 a that holds the electric wire W or the insulating sheet S that covers the electric wire W. The clamping part 81a reaches the tip part with the rotation center 82f as a substantial boundary. These clamping portions 81a and 81a are normally closed by being urged by a torsion coil spring 82. The opening / closing member 81 has a gripping portion 81b for opening and closing the pair of sandwiching portions 81a and 81a. The gripping portion 81b reaches the base end portion with the rotation center 82f as a substantial boundary. When the pair of gripping portions 81b and 81b are closed against the closing force of the torsion coil spring 82, the pair of clamping portions 81a and 81a can be opened.

  Referring to FIG. 8, the sandwiching portion 81a has a plurality of arc grooves 811 having different radii formed on the inner wall. The arc grooves 811 have a radius that decreases toward the base end side. After the pair of sandwiching portions 81a and 81a are opened and the insulating sheet S that wraps the wire W is introduced into the arc groove 811 on the distal end side, the pair of sandwiching portions 81a and 81a is closed to cover the wire W or the wire W. S can be temporarily fixed.

  Referring to FIG. 8, the gripping portion 81 b has a gripping groove 812 formed in a trapezoidal shape on the outer wall. On the other hand, the insulating operating rod 9 (not shown) is provided with a pair of gripping arms 9a and 9b that open and close at the tip. The pair of gripping arms 9a and 9b protrudes so as to oppose a square claw portion 92 that fits in the gripping groove 812.

  Referring to FIG. 8, the clip 8 is configured such that the claw portions 92 provided on the pair of gripping arms 9a and 9b are fitted into the gripping grooves 812 of the gripping portion 81b, so that the clip 8 Rotation or displacement can be prevented.

  In general, the pair of gripping arms 9a and 9b as shown in FIG. 8 is normally open. The pair of gripping arms 9a and 9b can be closed by gripping an operation lever provided at a handle portion of the insulating operation rod 9 (not shown). By releasing the operation lever, the pair of gripping arms 9a and 9b can be opened.

  Referring to FIG. 8, when the insulating sheet S disposed at a high place is temporarily fixed with the clip 8, the clip 8 is held in advance by grasping the operation lever and holding the clip 8 on the pair of gripping arms 9 a and 9 b. . Then, the insulating operation rod 9 is operated to bring the clip 8 close to the electric wire W. Next, after opening the pair of sandwiching portions 81a and 81a and introducing the insulating sheet S that encloses the electric wire W therein, by releasing the operation lever, the pair of sandwiching portions 81a and 81a is closed and the electric wire W or The insulating sheet S covering the electric wire W can be temporarily fixed.

  In this way, the conventional indirect hot-wire construction clip needs to bring the indirect hot-wire construction clip closer to the electric wire while maintaining the state where the operation lever of the insulating operation rod is gripped. It is not excellent. There is a need for a clip for indirect hot-wire work that has excellent operability of an insulating operation rod. The above can be said to be the subject of the present invention.

  This invention is made | formed in view of such a problem, and it aims at providing the clip for indirect hot wire construction excellent in the operativity which can hold | grip the electric wire or the insulating sheet which covers an electric wire easily.

  The present inventor noticed that the pair of gripping arms provided at the distal end of the insulating operating rod normally has a force acting in the open state, and by grasping the operating lever provided at the handle portion of the insulating operating rod. These problems can be solved by providing the outer walls of the pair of opening and closing members with recesses into which the tip claws of the pair of gripping arms can be inserted, and releasing the operation lever to keep the pair of opening and closing members open. As a result, the inventors have invented a new clip for indirect hot wire construction as described below.

  (1) The indirect hot wire clip according to the present invention can be operated by using an indirect hot wire tool having a pair of opening and closing gripping arms at the tip, and can hold an electric wire or an insulating sheet covering the electric wire. A clip for construction, a base end portion is rotatably connected so that a tip end portion can be opened and closed, and a pair of band plate-like opening and closing members capable of sandwiching the electric wire or the insulating sheet, and a pair of the opening and closing members A biasing member that biases a force in a direction in which the tip of the gripping member is closed, and the one opening / closing member includes a pair of gripping arms that are closed with a predetermined opening angle and are closed. The front claw has a first recess that can be inserted from the base end side of the opening / closing member in the middle part of the outer wall, and the other opening / closing member is closed with a pair of gripping arms provided with a predetermined opening angle. The tip of the other gripping arm can be inserted from the base end side of the opening / closing member. A pair of gripping arm tip claws inserted into the first recess and the second recess, and the pair of opening and closing members in a closed state. When the pair of gripping arms closed with the opening angle is opened, the distal ends of the pair of opening / closing members are opened.

  (2) The first recess includes a first stop inner wall with which a tip edge of one of the tip claws abuts, a first closed angle inner wall with which a part of a grip surface of the one of the tip claws abuts, A first opening angle inner wall with which a part of the surface opposite to the gripping surface of the tip claw contacts, and the second recess includes a second stop inner wall with which the tip edge of the other tip claw contacts, A second closed angle inner wall against which a part of the gripping surface of the tip claw abuts, and a second open angle inner wall against which a part of the surface opposite to the gripping surface of the other tip claw abuts, At least the second closed inner wall and the second open inner wall are provided with a predetermined gap so that the pair of gripping arms can be detached while the opening / closing member holds the electric wire or the insulating sheet. It is preferable.

  (3) It is preferable that one said holding arm consists of a fixed arm and the other said holding arm consists of a movable arm.

  (4) It is preferable that the urging member is set to have a weaker force for closing the distal ends of the pair of opening and closing members than a force for opening the pair of gripping arms.

  (5) It is preferable that the urging member is composed of a torsion coil spring disposed at a base end portion of the pair of opening / closing members.

  The clip for indirect hot wire construction according to the present invention is such that when the tip end of the pair of gripping arms is inserted into the first recess and the second recess and the operation lever is released, the tip of the pair of opening and closing members is opened. The operability is excellent.

It is a figure which shows the structure of the clip for indirect hot wire construction by one Embodiment of this invention, FIG. 1 (A) is a front view, FIG.1 (B) is a top view, FIG.1 (C) is a left view, FIG. 1 (D) is a right side view. It is a front view which shows the structure of the clip for indirect hot wire construction by the said embodiment, and is a state figure which opened a pair of opening-and-closing member. It is a perspective exploded view which shows the structure of the clip for indirect hot wire construction by the said embodiment. FIG. 4A is a front view of an insulating operation rod for gripping a clip for indirect hot wire construction according to the embodiment, FIG. 4A shows a base end side of the insulating operation rod, and FIG. The tip end side of the operation rod is shown. It is the front view which expanded the front-end | tip part of the insulation operating rod for holding the clip for indirect hot wire construction by the said embodiment. It is a front view which shows the use condition of the clip for indirect hot wire construction by the said embodiment, and is a state figure with which a pair of opening-and-closing member closed. It is a front view which shows the use condition of the clip for indirect hot wire construction by the said embodiment, and is a state figure which opened a pair of opening-and-closing member. It is a front view of the clip for indirect hot wire construction by a prior art.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
[Configuration of clips for indirect hot-wire construction]
Initially, the structure of the clip for indirect hot wire construction by one Embodiment of this invention is demonstrated.

  FIG. 1 is a diagram showing a configuration of an indirect hot wire clip according to an embodiment of the present invention. FIG. 1 (A) is a front view, FIG. 1 (B) is a plan view, and FIG. 1 (C) is a left side. FIG. 1D is a right side view. FIG. 2 is a front view showing a configuration of the clip for indirect hot wire construction according to the embodiment, and is a state diagram in which a pair of opening and closing members are opened. FIG. 3 is an exploded perspective view showing the configuration of the indirect hot wire clip according to the embodiment.

  Referring to FIG. 1, an indirect hot wire clip (hereinafter abbreviated as a clip) 10 according to an embodiment of the present invention can sandwich an electric wire W or an insulating sheet S covering the electric wire W (see FIG. 6). Further, the clip 10 can be operated using an insulating operation rod 70 (see FIG. 4) serving as an indirect hot wire tool described later.

  Referring to FIGS. 1 to 3, the clip 10 includes a pair of strip-like opening and closing members 1 and 2 and a torsion coil spring 3 serving as an urging member. The pair of opening / closing members 1 and 2 is made of a hard synthetic resin having an insulating property, and is formed into a long strip shape. The pair of opening / closing members 1 and 2 are pivotally connected to the base end so that the front end can be opened and closed. Further, the pair of opening and closing members 1 and 2 can hold the electric wire W or the insulating sheet S between their inner walls (see FIG. 7).

  Referring to FIGS. 1 to 3, the pair of opening and closing members 1 and 2 are provided with a step so that their base end portions can be divided. One open / close member 1 has a shaft hole 1h opened at the base end (see FIG. 3). The other opening / closing member 2 has a shaft hole 2h opened at the base end (see FIG. 3). After matching the shaft hole 1h and the shaft hole 2h, the pair of opening and closing members 1 and 2 can be connected to each other so as to be rotatable by inserting the connecting pin 31.

  Referring to FIGS. 1 to 3, the connecting pin 31 has a flange at the head, and by connecting a ring member 32 to the tip of the connecting pin 31, separation of the pair of opening and closing members 1 and 2 can be restricted. . Further, the pair of opening / closing members 1 and 2 have claw portions 1n and 2n at the base end portions. The maximum opening angle of the pair of opening and closing members 1 and 2 can be defined by the claw portions 1n and 2n coming into contact with the slopes of the other opening and closing members 1 and 2, respectively.

  Referring to FIGS. 1 to 3, the torsion coil spring 3 is housed in the base end portions of the pair of opening and closing members 1 and 2. The torsion coil spring 3 urges the force in the direction in which the distal ends of the pair of opening and closing members 1 and 2 are closed. And the front-end | tip part of a pair of opening-and-closing member 1 * 2 can be opened against the urging | biasing force of the torsion coil spring 3 (refer FIG. 3 or FIG. 7). On the other hand, it is urged | biased by the torsion coil spring 3, and the front-end | tip part of a pair of opening-and-closing member 1 * 2 can be closed (refer FIG. 1 or FIG. 6).

  Referring to FIGS. 1 to 3, one opening / closing member 1 has large and small circular grooves 11 r and 12 r having different radii on the inner wall. Similarly, the other opening / closing member 2 is formed with large and small arc grooves 21r and 22r having different radii on the inner wall. The electric wire W can be clamped by introducing the electric wire W having a relatively large outer diameter between the arc groove 11r and the arc groove 21r and closing the pair of opening and closing members 1 and 2. On the other hand, the electric wire W can be clamped by introducing the electric wire W having a relatively small outer diameter between the arc groove 21r and the arc groove 22r and closing the pair of opening and closing members 1 and 2.

  Referring to FIGS. 1 to 3, one opening / closing member 1 has a rectangular parallelepiped first protrusion 13 formed at an intermediate portion of the outer wall. The first protrusion 13 is provided with a first recess 13h into which a tip claw 71a (see FIG. 5) of one gripping arm 7a described later can be inserted. The first recess 13h opens toward the base end of the one opening / closing member 1.

  Similarly, referring to FIG. 1 to FIG. 3, the other opening / closing member 2 has a rectangular parallelepiped second protrusion 23 formed at an intermediate portion of the outer wall. The second protrusion 23 is provided with a second recess 23h into which a tip claw 71b (see FIG. 5) of the other gripping arm 7b described later can be inserted. The second recess 23 h is open toward the base end side of the other opening / closing member 2.

(Configuration of insulation operation rod)
Next, the configuration of the insulating operation rod for gripping the clip 10 according to the embodiment will be described. FIG. 4 is a front view of an insulating operation rod for gripping the clip for indirect hot wire construction according to the embodiment, and FIG. 4 (A) shows the proximal end side of the insulation operation rod, and FIG. ) Indicates the tip end side of the insulating operation rod. FIG. 5 is an enlarged front view of the distal end portion of the insulating operation rod for holding the indirect hot wire clip according to the embodiment.

  Referring to FIG. 4 or FIG. 5, an insulating operating rod 70 (so-called insulating Yatco), which is an indirect live tool, is composed of a long operating rod 71 and a gripping tool 72. The gripping tool 72 is detachably attached to the distal end portion of the operation rod 71. Further, the insulating operation rod 70 includes an operation rod 73. The insulating operation rod 70 has an insulating property secured so that an intermediate portion between the operation rod 71 and the operation rod 73 is connected by an insulating plastic pipe or the like and is suitable for the indirect hot wire method.

  Referring to FIG. 4 or FIG. 5, the gripping tool 72 is composed of a pair of curved gripping arms 7a and 7b that open and close. One gripping arm 7a is a fixed arm with a base end fixed, and the other gripping arm 7b rotates around a rotation shaft 7c provided at the base end of one gripping arm 7a. It is a movable arm.

  Referring to FIG. 4 or FIG. 5, the operation bar 73 is held along the operation bar 71. The distal end portion of the operating rod 73 is rotatably connected to the other gripping arm 7b. And if the operating lever 74 provided in the hand-held part of the action | operation stick | rod 73 is operated, the other holding arm 7b can be opened and closed with respect to one holding arm 7a.

  Referring to FIG. 4, when the operation lever 74 is grasped and the operation lever 74 is brought close to the operation rod 71, the other gripping arm 7b can be closed with respect to the one gripping arm 7a. When the operation lever 74 is released, the other gripping arm 7b can be opened with respect to one gripping arm 7a by the force of a spring (not shown) connected to the control lever 74. 4 or 5 shows a state in which the other gripping arm 7b is opened to the maximum with respect to one gripping arm 7a.

  Referring to FIG. 5, one gripping arm 7a projects a tapered tip claw 71a. The tip claw 71a forms a gripping surface 70a. The gripping surface 70 a is disposed substantially parallel to the axis center Q of the operation rod 71. Similarly, the other gripping arm 7b projects a tapered tip claw 71b. The tip claw 71b forms a gripping surface 70b. The gripping surface 70b is arranged with a predetermined opening angle with the gripping surface 70a. Referring to FIG. 4, when gripping the operation lever 74, the gripping surface 70b can be brought close to the gripping surface 70a. And an object to be grasped can be grasped.

[Indirect hot-line work clip action]
Next, while supplementing the configuration of the clip 10 according to the embodiment, the operation and effect of the clip 10 will be described while explaining the operation method of the clip 10.

  FIG. 6 is a front view showing a usage state of the clip for indirect hot wire construction according to the embodiment, and is a state diagram in which a pair of opening and closing members are closed. FIG. 7 is a front view showing a usage state of the clip for indirect hot wire construction according to the embodiment, and is a state diagram in which a pair of opening and closing members are opened.

  Referring to FIG. 6, when the clip 10 is attached to the insulating operating rod 70, first, the operating lever 74 is gripped (see FIG. 4), and the other gripping arm 7b is fixed to the predetermined gripping arm 7a. Close to open angle.

  Next, referring to FIG. 6, with the pair of opening and closing members 1 and 2 closed, the tip claw 71a is inserted into the first recess 13h, and the tip claw 71b is inserted into the second recess 23h. In this case, a pair until the tip edge of the tip claw 71a abuts on the first stop inner wall 131 of the first recess 13h or until the tip edge of the tip claw 71b abuts on the second stop inner wall 231 of the second recess 23h. Are preferably inserted into the first recess 13h and the second recess 23h.

  Referring to FIG. 6, a part of the gripping surface 70a of the tip claw 71a is in contact with the first closed angle inner wall 132 (see FIG. 1 or FIG. 2). Further, a part of the gripping surface 70 b of the tip claw 71 b is in contact with the second closed angle inner wall 232. In the process of inserting the pair of tip claws 71a and 71b into the first recess 13h and the second recess 23h, the first closed angle inner wall 132 is continuous with the outer wall of one of the opening / closing members 1 and the second closed angle inner wall 232 is. Since it becomes a slope and faces the gripping surface 70b, the insertion is easy.

  When the operating lever 74 is released from the state shown in FIG. 6 (see FIG. 4) and the pair of gripping arms 7a and 7b closed with a predetermined opening angle are opened, the gripping surface 70a of one tip claw 71a is opened. A part of the surface opposite to the first opening angle inner wall 133 abuts and a part of the surface opposite to the gripping surface 70b of the other end claw 71b contacts the second opening angle inner wall 233, and the pair of opening and closing members 1・ The tip of 2 can be opened (see FIG. 7). In this case, the torsion coil spring 3 is set so that the force for closing the distal ends of the pair of opening and closing members 1 and 2 is weaker than the force for opening the pair of gripping arms 7a and 7b.

  As shown in FIG. 7, the clip 10 can be moved toward the electric wire W arranged at a high place while maintaining the open ends of the pair of opening and closing members 1 and 2. Next, by introducing the electric wire W or the insulating sheet S between the pair of opening and closing members 1 and 2 and gripping the operation lever 74 (see FIG. 4), the gripping surface 70b of the other tip claw 71b becomes the second closed angle. It moves to the inner wall 232 side (see FIG. 6), and the ends of the pair of opening and closing members 1 and 2 can be closed to hold the electric wire W or the insulating sheet S.

  When the pair of opening and closing members 1 and 2 sandwich the electric wire W or the insulating sheet S from the state shown in FIG. 7, at least the second closed angle inner wall 232 and the second open angle inner wall 233 are provided with a predetermined gap. Therefore, the pair of gripping arms 7a and 7b can be detached.

  As described above, when the clip 10 according to the embodiment inserts the tip claws 71a and 71b of the pair of gripping arms 7a and 7b into the first recess 13h and the second recess 23h and releases the operation lever 74, the pair of opening and closing members Since the electric wire W can be approached in a state where the tip ends of 1 and 2 are opened, the operability is excellent.

The indirect hot wire clip according to the present invention has the following effects.
(1) The clip can be easily attached to the insulating operation rod.
(2) The electric wire or the insulating sheet covering the electric wire can be securely held.
(3) Since the clip is gripped by the insulating operating rod, it is not necessary to grip the operating lever.
(4) The clip can be moved with the operation lever released, and operation is easy.

  Although the present invention has disclosed a clip for indirect hot-wire construction that can indirectly hot-line high-voltage distribution lines in an uninterruptible state using an insulating operation rod or the like, the clip of the present invention is for indirect hot-wire construction. Without being limited, it is expected to be applied in other fields.

1.2 Pair of opening and closing members 3 Torsion coil spring (biasing member)
7a, 7b A pair of gripping arms 10 clips (clips for indirect hot wire construction)
13h 1st recessed part 23h 2nd recessed part 70 Insulation operation rod (indirect hot wire tool)
71a Tip claw (tip claw of gripping arm 7a)
71b Tip claw (tip claw of gripping arm 7b)
S Insulation sheet W Electric wire

Claims (5)

A clip for indirect hot wire construction that can be operated using an indirect hot wire tool having a pair of opening and closing gripping arms at the tip, and that can hold an electric wire or an insulating sheet covering the electric wire,
A pair of strip-like opening and closing members that are pivotally connected so that the distal end can be opened and closed, and can sandwich the electric wire or the insulating sheet;
A biasing member that biases a force in a direction in which the distal ends of the pair of opening and closing members are closed,
One opening / closing member has an outer wall provided with a first recess in which a distal end claw of the one holding arm can be inserted from the base end side of the opening / closing member with the pair of holding arms closed with a predetermined opening angle. In the middle of
The other opening / closing member has an outer wall provided with a second recess in which a tip claw of the other holding arm can be inserted from the proximal end side of the opening / closing member with the pair of holding arms closed with a predetermined opening angle. In the middle of
The pair of gripping arms closed by providing a predetermined opening angle with the tip claws of the pair of gripping arms inserted into the first recess and the second recess and the tips of the pair of opening and closing members closed. The clip for indirect hot wire construction which opens the front-end | tip part of a pair of said opening-and-closing member when open. The first recess is
A first stop inner wall against which a tip edge of one of the tip claws abuts,
A first closed angle inner wall with which a part of the gripping surface of one of the tip claws abuts,
A first opening angle inner wall against which a part of the opposite surface of the gripping surface of the tip claw contacts,
The second recess is
A second stop inner wall against which the tip edge of the other tip claw contacts,
A second closed angle inner wall with which a part of the grip surface of the other tip claw contacts,
A second opening angle inner wall with which a part of the surface opposite to the grip surface of the other tip claw contacts,
At least the second closed angle inner wall and the second open angle inner wall have a predetermined gap so that the pair of gripping arms can be detached while the pair of opening and closing members sandwich the electric wire or the insulating sheet. The clip for indirect hot-wire construction of Claim 1 provided.   The indirect hot work clip according to claim 1 or 2, wherein one of the gripping arms is a fixed arm and the other gripping arm is a movable arm.   The indirect hot wire construction clip according to any one of claims 1 to 3, wherein the biasing member is set to have a weaker force for closing the distal end portions of the pair of opening and closing members than a force for opening the pair of gripping arms.   The clip for indirect hot wire construction according to any one of claims 1 to 4, wherein the urging member includes a torsion coil spring disposed at a base end portion of the pair of opening / closing members.

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