JPH082930Y2 - Connection clamp - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) Conventionally, when a bypass circuit is constructed from an aerial insulated distribution line in a live state, as disclosed in Japanese Patent Laid-Open No. It was proposed to push up the facing blade with a screw from below without fixing the electric wire and break through the insulation of the electric wire, but in this method, since the electric wire is not fixed, The wire moves left and right until the interval blade bites sufficiently into the insulator, which unnecessarily damages the insulator, and a spare blade must be prepared according to the size of the wire and must be replaced each time. It had the drawback of not becoming. Also, the actual development Sho 53-213
In the conventional way as disclosed in No. 79, as before, the wire is not fixed, so it moves left and right until the annular sharp edge bites sufficiently into the insulator, which is unnecessary. Since the columnar current collector attached inside the curved shape of the main body initially protrudes because of the drawback of damaging the insulator, when inserting the wire into the curved shape of the main body from the opening in this state, Depending on the wire size, it may get in the front side or the back side of the current collector, and it may not be pinched between the upper and lower current collectors. Since the insulator is largely peeled off in an annular shape, it has a drawback that a great deal of labor is required for repairing the taping work with a hot wire tool after use.

(Problems to be solved by the invention) This invention has been made to solve the above-mentioned drawbacks. First, the wire is fixed and then restrained so as not to sway left and right, and then the wire is insulated by a needle electrode. The purpose of the invention is to provide a connection clamp that breaks through the body.

(Means for Solving the Problems) As will be described with reference to the drawings showing an embodiment of the present invention, the connection clamp of the present application has a hole 9 in the center as shown in FIGS. 1 to 4. The holding tool 6 that is attached is attached to the clamp body 1 so as to be vertically movable, and holds the insulated wire 4 between the upper end of the holding tool 6 and the curved portion 5 of the clamp body 1.
The screw rod 3 has a screw portion 13 that is screwed into a screw hole 10 of a holder portion 7 provided in the base portion 2 of the clamp body 1, moves in the hole 9 at the upper portion, and has a needle electrode 15 at the tip. Needle electrode part
11 is provided, a stopper 16 is provided at the upper end of the screw portion 13, a spring 12 is mounted between the lower end of the gripping tool 6 and the stopper 16, and the needle-shaped electrode 15 is always provided at the gripping tool 6 Is located in the hole 9 of the holding tool 6 and holds the insulated wire 4 between the upper end of the holding tool 6 and the curved portion 5 of the clamp body 1 and then projects from the hole 9 to break through the insulator of the insulated wire 4. Has been done. In addition, 8 is a terminal portion used for connection with a bypass circuit, 14 is an operating rod joint fitting,
An insulating operating rod (not shown) is attached to the operating rod joint fitting 14, and an operator rotates the insulating operating rod to rotate the screw rod 3.

(Operation) In the connection clamp before gripping the insulated wire 4, as shown in FIG. 1, the curved portion 5 and the upper end of the gripping tool 6 have the insulated wire 4
When the insulated operation rod is rotated and the screw rod 3 is rotated after the insulated electric wire 4 is attached, the screw rod 3 is moved upward as shown in FIG. Move and push up the spring 12, and the spring 12
, But the needle-shaped electrode part 11 also moves upward,
The relative positional relationship between the gripping tool 6 and the needle-shaped electrode portion 11 hardly changes. When the screw rod 3 is further rotated and the upper end of the gripper 6 hits the insulated wire 4 as shown in FIG. 3, the spring force of the spring 12 starts to work, and the upper end of the gripper 6 and the curved portion 5 are insulated. When the electric wire 4 is started to be tightened and the needle electrode 15 also gradually moves upward in the hole 9 of the gripping tool 6 and grips the insulated wire 4 between the upper end of the gripping tool 6 and the curved portion 5 so as not to shake, the gripping is performed. When the tool 6 stops moving upward, the distance between the turns of the spring 12 is further shortened, and the needle-shaped electrode 15 projects from the hole 9 of the holding tool 6 to insulate the insulated wire 4 as shown in FIG. The body is broken through to electrically connect the bypass circuit electric wire connected to the terminal portion 8 and the insulated electric wire 4.

(Effect of the Invention) Since the present invention is configured as described above, it has the following effects.

(1) Since the needle-shaped electrode does not protrude until the insulated wire is fixed, unnecessary damage to the insulator unlike the conventional electrode that protrudes from the beginning does not occur.

(2) Since the needle-shaped electrode only penetrates the insulator to the minimum extent, it is easy to repair the insulator after use.

(3) Since the needle-shaped electrode is hidden inside the gripping tool,
Since it does not hinder the installation of insulated wires, the applicable wire size range is expanded.

[Brief description of drawings]

1 is a partially cutaway side view showing a state before use, FIG. 2 is a partially cutaway side view showing an initial state in which a screw rod has started to rotate, and FIG. 3 is an upper end of a gripping tool as an insulated wire. FIG. 4 is a partially cutaway side view showing a state where the needle electrode abuts, and FIG. 4 is a partially cutaway side view showing a state where the needle-shaped electrode protrudes from the hole of the gripping tool and breaks through the insulator of the insulated wire. 1: Clamp body, 2: Clamp body base, 3: Screw rod, 4:
Insulated wire, 5: curved part, 6: gripping tool, 7: holder part, 8: terminal part, 9: hole, 10: screw hole, 11: needle electrode part, 12: spring, 13: screw part, 14: Control rod joint bracket, 15: needle electrode, 16: stopper

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 999999999 Nishi Nippon Electric Wire and Cable Co., Ltd. 2899 Dahara, Oita-shi, Oita Prefecture (72) Creator: Kacho Maruyama 2-82 Watanabe-dori, Chuo-ku, Fukuoka-shi, Fukuoka Kyushu Electric Power Incorporated (72) Inventor Shojiro Ishibashi 1-23-35 Nanogawa, Minami-ku, Fukuoka-shi, Fukuoka Kyushu Electric Works Co., Ltd. (72) Inventor Toshiro Goto 1-23-35 Nanogawa, Minami-ku, Fukuoka, Fukuoka Kyushu Electric Works Co., Ltd. (72) Inventor Kiyotaka Fujimatsu 660 Minamimachi, Kurume-shi, Fukuoka Oden Stock Company (72) Inventor Michitaka Ando 2899 Dahara, Oita-shi, Oita Nishi Nippon Electric Cable Co., Ltd. (56) References Japanese Unexamined Patent Publication No. 51-20584 (JP, A) Actually opened 53-21379 (JP, U) Actually opened 55-120089 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A gripper (6) having a hole (9) in the center thereof.
Is attached to the clamp body (1) so as to be vertically movable, holds the insulated wire (4) between the upper end of the holding tool (6) and the curved portion (5) of the clamp body (1), and 3) has a screw part (13) screwed into the screw hole (10) of the holder part (7), moves in the hole (9) at the upper part, and has a needle electrode (15) at the tip. Needle electrode part (11)
Is provided, and a stopper (16) is provided on the upper end of the screw part (13).
Is provided, and a spring (12) is mounted between the lower end of the gripping tool (6) and the stopper (16), and the needle electrode (15) is always provided with a hole (9) of the gripping tool (6). )
Located inside the clamp body (1) and the upper end of the gripper (6)
A connection clamp characterized by holding the insulated electric wire (4) between the curved portion (5) and the curved portion (5), and then projecting from the hole (9) to break through the insulator of the insulated electric wire (4).