JPH1092495A - Scissorses type needle electrode clamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp which can connect a movable metal fitting and a fixing metal fitting to a bypass cable, only by pinching both fittings by a general purpose insulating operation rod, by improving a conventional needle electrode screw fastening type requiring a dedicated jig. SOLUTION: A movable metal fitting 3 having a wire grasping groove 1 is connected to a fixing metal fitting 9 at its one end, and it is energized in the condition normally opened by a spring force constantly. To the fixing metal fitting 9, a wire grasping groove 1' is provided in the position opposing to the wire grasping groove 1, a hole 5 is formed at the center of the wire grasping groove 1', and a neddle electrode 4 is fixed at the bottom of the hole 5 so as to project to the wire grasping groove 1'. On one side of the fixing metal fitting 9, a wire connecting terminal 8 is fixed, while a lock release lever 6 which can release the locking of the movable metal fitting 3 abutted and locked to the fixing metal fitting 9 is installed in the other side. When the wire grasping groove 1' is installed, and the movable metal fitting 3 is abutted to the fixing metal fitting 9, the movable metal fitting 3 is locked to the fixing metal fitting 9, as well as the neddle electrode 4 bursts through the cover of the wire, and reaches to a conductor, and this locking can be released by the lock release lever 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp used to electrically connect a live line and a bypass cable in uninterrupted work such as a 6600 volt distribution line, and more particularly to a needle electrode. The present invention relates to a clamp in which a method of pushing a wire into a conductor of an electric wire is improved, and a simple and quick connection can be achieved as compared with a conventional clamp.

[0002]

2. Description of the Related Art Conventionally, as a clamp of this type, a clamp having a structure disclosed in Japanese Patent Application Laid-Open No. 51-20584, Japanese Utility Model Application Laid-Open No. 53-21379 and Japanese Utility Model Application No. 63-95993 has been used. . The clamps with these structures push up the needle electrode with a screw and abut on the conductor of the electric wire.In order to turn the screw, a special jig such as a screw bar is required, and many times There are problems such as the trouble of having to turn the screw and the time required for the needle electrode to come into contact with the conductor of the wire.Therefore, no special jig is required, and it is a general-purpose jig. There has been a strong demand for the appearance of a clamp capable of performing work quickly.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the problems described in the prior art, and is an improvement over the conventional screw system, which does not require a special jig, and which is quick. It is intended to provide a clamp capable of performing work.

[0004]

According to the scissor-type needle electrode clamp of the present invention, a movable metal fitting having an electric wire holding groove has one end connected to a fixed metal fitting and is urged to be always opened by a spring force. The fixed metal fitting is provided with a wire gripping groove at a position facing the wire gripping groove of the movable metal fitting, a hole is formed in a center portion of the wire gripping groove, and a needle electrode is provided at the bottom of the hole with the needle electrode. It is fixed so as to protrude, an electric wire connection terminal is fixed to one side surface of the fixing bracket,
On the other side, an unlocking lever that can abut the fixed fitting and release the locked movable fitting is attached, and an electric wire is attached to a wire gripping groove of the fixed fitting,
When the movable fitting is brought into contact with the fixing fitting, the needle electrode breaks through the coating of the electric wire and reaches the conductor,
The movable metal fitting is locked to the fixed metal fitting, and the lock can be released by the lock releasing lever.

[0005] Therefore, the electric wire is set in the electric wire holding groove of the fixing bracket, and a general-purpose operation rod having a gripper at the end is used.
When the movable bracket is brought into contact with the fixing bracket, the electric wire is sandwiched between the two wire holding grooves, the needle electrode breaks through the insulator of the electric wire and hits the conductor, the movable bracket is locked to the fixing bracket, and the electric current is It flows through the needle electrode to the bypass cable connected to the wire connection terminal.

When the operation is completed and the lock between the movable fitting and the fixed fitting is released by the unlock lever with the operating rod, the movable fitting is opened upward by the spring force and the clamp can be removed instantaneously.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings showing an embodiment of the present invention, a scissor-type needle electrode clamp according to the present invention has a movable metal fitting 3 having an electric wire holding groove 1 and one end connected to a fixing metal fitting 9. The fixed metal fitting 9 is provided with an electric wire gripping groove 1 ′ at a position facing the electric wire gripping groove 1 of the movable metal fitting 3. A hole 5 is drilled in the center of the hole 1 ′, and a needle electrode 4 is fixed to the bottom of the hole 5 so as to protrude into the wire holding groove 1 ′. The connection terminal 8 is fixed, and on the other side,
An unlocking lever 6 that can release the lock of the movable metal fitting 3 that is in contact with and locked to the fixing metal fitting 9 is attached, and an electric wire is attached to the wire holding groove 1 ′ of the fixing metal fitting 9.
When the movable metal fitting 3 is brought into contact with the fixed metal fitting 9, the needle electrode 4 breaks through the coating of the electric wire and reaches the conductor, and the movable metal fitting 3 is locked to the fixed metal fitting 9,
The lock is released by the lock release lever 6.

In FIG. 1, reference numeral 11 denotes a lock pin, and 12 denotes a lock hole into which the lock pin is inserted. The relationship between the lock release lever 6, the lock pin 11, and the lock hole 12 will be described with reference to the schematic diagrams shown in FIGS. 3 and 4. A protrusion 13 is provided at the tip of the lock pin 11, and the lock hole 12 is The protruding portion 13 is formed in such a size as to allow loose insertion. As shown in FIG. 3, a disk 16 having a large notch 14 and a small notch 15 is rotatably attached to a shaft 17 at a lower portion of the lock hole 12, and when a load is not applied to the large notch 14, It is urged in the direction of the arrow by a spring force so that it can always return to the state shown in FIG. The unlocking lever 6 is rotatably mounted on a shaft 18 as a fulcrum. The tip of the rod 19 of the unlocking lever 6 is bent upward, and the bent end 20 is formed by a small notch of the disk 16. 15, the tip of the rod 19 is constantly urged upward by the spring force of a spring 21, and when the movable fitting 3 is open, as shown in FIG. The edge of the disk 16 is pressed. Next, the movable bracket 3
When the lock pin 11 approaches the fixing bracket 9, the lock pin 11 is inserted into the lock hole 12, and the protrusion 13 of the lock pin 11 pushes down the large cutout 14 of the disk 16, and when the state shown in FIG. The bent tip 20 of the -6 rod 19 fits into the small notch 15 of the disk 16 to lock the rotation of the disk 16 and at the same time the protrusion 13 of the lock pin 11 is shown in FIG. As shown in FIG.
4 so that the movable fitting 3 is fixed to the fixed fitting 9.
Will be locked. In order to release the lock, the lock release lever 6 and the knob 7 fixed to the fixing bracket 9 are sandwiched, and the lock release lever 6 is brought close to the knob 7, and the rod 19 of the lock release lever 6 is released. With the shaft 18 as a fulcrum, the rod 19
Is rotated so as to push down the distal end of the disk 10, and the bent distal end 20 of the rod 10 is detached from the small cutout 15 of the disk 16. Then, the disk 16 returns to the state shown in FIG. 3 by the spring force, and at the same time, the lock of the lock pin 11 is released, and the lock of the movable bracket 3 is released in conjunction therewith, and the movable bracket 3 is opened by the spring force. Is done.

FIG. 2 shows an embodiment in which a high-voltage cable 10 provided with a stress cone used in a 6600 volt class high-voltage line is attached to the electric wire connection terminal 8 in an auxiliary manner. Of the high-pressure cable 10
Is connected to the leftmost terminal.

[0010]

Since the present invention is constructed as described above, when the knob of the movable metal fitting and the knob of the fixed metal fitting are sandwiched by a general-purpose operating rod having a grip at the tip, the needle electrode is instantaneously connected to the electric wire. When hitting the conductor and grasping the lock lever, the fixing bracket opens upward and the needle electrode separates from the conductor of the electric wire.
Work can be done faster than before.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing another embodiment of the present invention.

FIG. 3 is a schematic explanatory view showing a relationship between a lock release lever 6, a lock pin 11, and a lock hole 12.

FIG. 4 is a schematic explanatory view showing a relationship between a lock release lever 6, a lock pin 11, and a lock hole 12.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wire holding groove 1 'Wire holding groove 2 Knob 2' knob 3 Movable bracket 4 Needle electrode 5 Hole 6 Unlock lever 7 Knob 8 Wire connection terminal 9 Fixing bracket 10 High voltage cable 11 Lock pin 12 Lock hole 13 Lock pin Projection 14 Large notch 15 Small notch 16 Disc 17 Shaft 18 Shaft 19 Rod of unlocking lever 20 Bent tip 21 Spring

Claims (1)

[Claims] A movable bracket (3) having an electric wire holding groove (1) has one end connected to a fixing bracket (9), and is constantly urged to be opened by a spring force. ) Includes an electric wire holding groove (1) of the movable fitting (3).
A wire gripping groove (1 ′) is provided at a position facing the wire, a hole (5) is formed in the center of the wire gripping groove (1 ′), and a needle electrode (4) is provided at the bottom of the hole (5). Are fixed so as to protrude into the electric wire holding groove (1 ′), an electric wire connection terminal (8) is fixed to one side surface of the fixing metal fitting (9), and the fixing metal fitting is fixed to the other side surface. An unlocking lever (6), which can unlock the movable metal fitting (3) which is in contact with and locked to (9), is attached, and an electric wire is mounted in the electric wire gripping groove (1 ') of the fixing metal fitting (9). When the movable metal fitting (3) is brought into contact with the fixed metal fitting (9), the needle electrode (4) breaks through the covering of the electric wire and reaches the conductor, and the movable metal fitting (3) is fixed to the fixed metal fitting (9). The lock is locked to (9), and the lock can be released by the lock release lever (6). Needle electrode clamp