JP3476105B2 - Live Tool Fixture - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool for attaching a live wire tool, and more particularly to a tool for detachably attaching a required live wire tool such as a bypass cable connecting clamp to an insulated operating rod. .

[0002]

2. Description of the Related Art Conventionally, when performing required work such as holding, cutting, and stripping of electric wires, for example, a so-called live wire tool is attached to an insulating operating rod, that is, so-called. It is supposed to be done by the indirect live-wire construction method. When the required live wire tool is removably attached to the insulating operation rod, the insertion tube of the live wire tool is fitted to the receiving tube of the insulating operation rod, and the fitting connecting portion is laterally attached. It is known that a spring-loaded pin is configured to be attached by inserting and locking the pin. Also, the fairness 5-14
As disclosed in Japanese Laid-Open Patent Publication No. 650, there is known one configured to be attached by fitting and engaging a plug-in tube of a live-wire tool and a receiving tube of an insulating operation rod with a lock mechanism. However, in the conventional example configured as described above, since the insertion tube and the receiving tube are fitted and engaged with each other by the spring-loaded pin or the lock mechanism, and the required live wire tool is attached to the insulating operation rod, Although it can be securely attached, it is an insulating operation rod immediately after it is attached to the wire like a bypass cable connection clamp used for attaching to the required wire and performing repair work etc. In a live-wire tool that needs to be removed more, the removal is extremely troublesome and troublesome.

In order to solve the problems of the conventional example, a pair of substantially T-shaped locking grooves on both sides are formed in the lower end of the insertion tube of the live-wire tool so as to face each other, and are engaged with the locking grooves. Therefore, there has been proposed a structure in which an engaging pin is projectingly provided on the receiving cylinder (see Japanese Patent Laid-Open No. 5-252627). And, in such a conventional example, after fitting the engaging pin into the locking groove, and twisting it slightly in a predetermined direction to engage the engaging pin with the engaging groove and attach the live wire tool to the insulated operating rod, Also, it is supposed to be removed on the contrary.

By the way, the bypass cable connecting clamp, which is used for attaching to a required electric wire and performing repair work, needs to be tightened with a torque of about 70 kgf-cm or more when it is attached to the required electric wire. If it is less than that, poor contact is liable to occur, and if it is strongly tightened with a torque of 200 kgf-cm or more, the clamp or the operating rod may be damaged. Therefore, sufficient torque control is required when the clamp is attached to the electric wire. In the conventional example configured as described above, the engaging pin of the receiving tube is engaged with the engaging groove of the insertion tube, and a live wire tool such as a clamp is attached to the insulating operation rod to perform the required work. Therefore, not only the torque cannot be controlled, but also the tightening force varies, which hinders uniform mounting work. Further, when the clamp is attached to the electric wire and then reversely operated to remove the insulating operation rod, the tightening force may be loosened.

The present invention is intended to solve the problems of the prior art. When mounting a required live wire tool such as a clamp on an electric wire, the tightening torque is controlled and the mounting work is performed quickly and surely. Not only can you
(EN) It is an object to provide an attaching tool for a live wire tool which has an extremely good workability and which can easily remove the insulating operation rod even after the attachment.

[0006]

That is, according to the present invention, a rotating member 7 is rotatably provided in a bottomed cylindrical body 1 having an insulating operating rod mounting member 2 at its lower end, and the rotating member 7 is while being always biased upwardly via a biasing member 8, substantially the same uneven surface shape to allowed to insertion and removal of the outer peripheral surface uneven surface shape and has been hot-line tool knob 22 at the upper end portion of the rotary member 7 An insertion hole 10 having an inner peripheral surface is formed, and a locking flange having an inner peripheral surface with an uneven surface is formed at the upper end of the cylindrical body 1 so as to correspond to the insertion hole 10. 13 is formed inward, and the cylindrical body 1 has a lock hole 5 and a lock release hole 4 at both ends along its circumferential direction.
Grooves with hole-shaped lock pin operating path 3 is formed, the locking pin 9 so allowed to operate along the lock pin operating path 3 is projected on the outer peripheral surface of the rotary member 7, the lock having bets
The pin 9 engages with the lock hole 5 and engages with the insertion hole 10 and the locking flap.
By changing the shape of the inner circumference of the
Locks the rolling member 7 and engages with the lock release hole 4
Then, the rotating member 7 is
Characterized by being configured to be unlocked
The gist is a fixture for a live-wire tool .

[0007]

[Function] The lock pin 9 is positioned in the lock release hole 4,
A cylindrical body 1 of the locking flange 13 the inner circumferential surface and the insertion hole 10 inner peripheral surface of the rotary member 7 tighten one Itase in the same peripheral shape with allowed to open the insertion hole 10, insulated by the mounting member 2 Attach the operating rod 23, and then insert the live wire tool 1 into the insertion hole 10.
The lower end of the knob 22 of 6 is inserted. Then, the rotating member 7
Is rotated so that the lock pin 9 is engaged with the lock hole 5, and the knob 22 is locked by the locking flange 13. After that, the live wire tool 16 is hooked on the required 24 electric wires, and the handle of the insulating operation rod 23 is rotated clockwise to attach the live wire tool 16 to the electric wire 24. And when the tightening force reaches a certain torque,
The rotating member 7 automatically idles against the urging force of the urging member 8 to unlock the lock pin 9, unlock the locking flange 13, and insert the live wire tool 16 into the insertion hole. Remove by removing from 10.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in the drawings will be described below. Reference numeral 1 denotes a bottomed cylindrical body having an insulating operating rod mounting member 2 at its lower end, 3 denotes a slotted lock pin operating path formed along the circumferential direction of the cylindrical body 1, and 4 denotes the lock. The lock release hole 5 formed upward so as to communicate with one end of the pin operation path 3 is a lock hole formed upward so as to communicate with the other end thereof, and the lock hole 5 is a lock pin 9 described later.
Is configured to engage approximately half of the. Reference numeral 6 denotes a support shaft erected at the center of the cylindrical body 1, 7 denotes a thick cylindrical rotary member rotatably fitted and supported on the support shaft 6 via an urging member 8, and 9 denotes a thick cylindrical rotary member. A lock pin protrudingly provided on the outer peripheral surface of the rotating member 7 so as to be fitted into the lock pin operating path 3.
Reference numeral 10 denotes a large-diameter insertion hole formed at the upper end of the rotary member 7. A concave portion 11 and a convex portion 12 are formed on the inner peripheral surface of the insertion hole 10 so that a knob 22 described later can be inserted and locked. Have an uneven surface shape formed alternately. Reference numeral 13 denotes a locking flange that is formed inwardly on the upper end of the tubular body 1 so as to correspond to the insertion hole 10. The inner peripheral surface of the locking flange 13 is the inner circumference of the insertion hole 10. The concave and convex portions 14 and 15 have the same shape and size as the surface and are formed into an uneven surface.

In addition, 16 is a bypass cable connecting clamp, 17 is a substantially box-shaped clamp main body which constitutes the clamp 16, and 18 is a high-voltage bypass insulating lead which will be described later and is formed on one side of the upper end of the clamp main body 17. -A mounting plate for the wire 25, 19 is a fixed gripping piece formed on the other side, 20 is a movable gripping piece that is provided upwardly below the fixed gripping piece 19, and 21 is the movable gripping piece 20. The operation screw shaft, which is screwed into the clamp body 17 so that it can be moved up and down, and 22 are inserted.
The outer peripheral surface fixed to the lower end of the operation screw shaft 21 so as to be inserted into and removed from the mounting hole 10 is a knob having an uneven surface . Reference numeral 23 is an insulating operation rod, 24 is an electric wire, and 25 is a high-voltage bypass insulating lead wire.

Next, the operation of the embodiment configured as described above will be described. First, it allowed position the lock pin 9 in the unlocking hole 4, one and the tubular body 1 of the locking flange 13 the inner peripheral surface of the insertion hole 10 inner peripheral surface of the rotating member 7 in the same peripheral shape <br / > Make sure that the insertion hole 10 is opened. Next, the insulating operation rod 23 is mounted via the mounting member 2, and the knob 22 of the clamp 16 is fitted and locked in the insertion hole 10 to be mounted. When the insertion of the knob 22 is completed, the rotary member 7 is rotated, the lock pin 9 is engaged with the lock hole 5, and the convex portion 15 of the locking flange 13 locks the upper end of the knob 22 for operation. The screw shaft 21 for use is prevented from being pulled out, and the mounting of the clamp 16 is completed (see FIGS. 1 and 5).

After that, the fixed gripping piece 1 of the clamp 16
9 is hooked on the required electric wire 24, and the handle of the insulating operation rod 23 is rotated clockwise, while the operation screw shaft 21 is operated to hold the movable gripping piece 20 on the electric wire 24. When the tightening torque of the movable gripping piece 20 on the electric wire 24 exceeds a certain value (130 kgf-cm),
The urging force of the urging member 8 for urging the rotating member 7 upward is exceeded, the rotating member 7 idles, and the lock is automatically released.
The lock pin 9 engages with the lock release hole 4, and the rotary member 7 returns to the original state. When the rotary member 7 returns to its original state, the inner peripheral surface of the insertion hole 10 has the same inner peripheral shape as the inner peripheral surface of the locking flange 13, so that the knob 22 is disengaged from the insertion hole 10 and the clamp 16 itself is removed. The electric wire 24 is attached by being attached (see FIGS. 2, 3, and 6).

On the contrary, when the clamp 16 attached to the electric wire 24 is removed, the knob 22 of the operation screw shaft 21 is fitted into the insertion hole 10 and the handle of the insulating operation rod 23 is rotated counterclockwise. Rotate it. Then, the rotating member 7 rotates clockwise against the upward biasing force of the biasing member 8, and the lock pin 9 is engaged with the lock hole 5. Further, the handle of the insulating operation rod 23 is rotated counterclockwise, and the operation screw shaft 21 is unscrewed to move the movable gripping piece 2.
It is advisable to remove the grip on the electric wire 24 by lowering the value 0.

Although the above embodiment has shown an example of application to the bypass cable connecting clamp 16, the present invention is not limited to this, and can be applied to a required hot wire tool. is there.

[0014]

Since the present invention is constructed as described above, the knob 22 of the required hot-line tool 16 is inserted into the insertion hole 10 and the rotary member 7 is rotated and locked.
The locking flange 13 is locked to the knob 22, and the live wire tool 1
6 can be mounted quickly and surely. Even when the live wire tool 16 is attached to the electric wire 24 via the required insulation operating rod 23, when the tightening torque by the insulation operating rod 23 exceeds a certain value, the urging member 8 is pressed.
The lock pin 9 can be disengaged from the lock hole 5 to automatically release the lock by overcoming the upward biasing force of the lock pin, and the tightening torque must always be controlled, and the mounting work can be performed reliably and safely. Not only can
There is no risk of damaging the live-wire tool 16 or the insulation operating rod 23, and the lock is automatically released when the tightening torque exceeds a certain value as described above.
The removal of 6 can be performed automatically without any operation, and is extremely workable.

[Brief description of drawings]

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

FIG. 2 is a side view showing a state in which a bypass cable connecting clamp 16 is attached.

3 is a cross-sectional view taken along the line I-I of FIG.

FIG. 4 is a partially cutaway side view showing a usage state.

5 is a cross-sectional view taken along the line II-II of FIG.

FIG. 6 shows the bypass cable connecting clamp 16 connected to the electric wire 2.
4 is a perspective view showing a state of being attached to FIG.

[Explanation of symbols]

1 tubular body 2 Insulation operating rod mounting member 3 Lock pin working path 4 Lock release hole 5 lock holes 7 Rotating member 8 biasing member 9 Lock pin 10 insertion holes 13 Locking flange 16 Bypass cable connection clamp 22 knobs 23 Insulated operating rod 24 electric wires

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Taiji Shimizu Inventor Taiji Shimizu 2-33-1, Honjo Higashi, Kita-ku, Osaka Kindennai Stock Company (72) Hiro Maeda 4--11-11 Nishitenma, Kita-ku, Osaka Daito Denki Incorporated (56) Reference JP-A-5-252627 (JP, A) Actually open 5-61511 (JP, U) Actually open 58-43108 (JP, U) JP-B 47-5868 (JP, B1) Japanese Patent Publication No. 42-7749 (JP, B1) (58) Fields investigated (Int.Cl. ⁷ , DB name) H02G 1/02

Claims (4)

(57) [Claims] 1. A rotating member 7 is rotatably installed in a bottomed tubular body 1 having an insulating operating rod mounting member 2 at its lower end, and the rotating member 7 is always upward via an urging member 8. while being urged, substantially the same uneven surface shape to allowed to insertion and removal of the outer peripheral surface uneven surface shape and has been <br/> live-line tool knob 22 at the upper end portion of the rotary member 7
And an insertion hole 10 having an inner peripheral surface of the insertion hole 10 is formed.
In order to correspond to the above, the locking flange 13 having the inner peripheral surface of the same uneven surface is formed inward at the upper end of the tubular body 1, and the tubular body 1 has both ends along its circumferential direction. Lock hole 5
Slot-like lock pin working path 3 having a lock release hole 4 and
Is formed , and a lock pin 9 is projectingly provided on the outer peripheral surface of the rotating member 7 so as to operate along the lock pin operating path 3 , and the lock pin 9 engages with the lock hole 5 and is inserted into the insertion hole.
10 and the flange 13 for locking are made to have an inconsistent inner peripheral shape.
Lock the rotating member 7 by
To engage the clearance release hole 4 to match the inner peripheral shape
A fitting for a live-wire tool, which is configured to unlock the rotating member 7 more . 2. A fixture for a hot-wire tool according to claim 1, wherein the lock hole 5 is formed so as to engage substantially half of the lock pin 9. 3. The method according to claim 1, wherein the urging force of the urging member 8 is appropriately controlled so as to release the lock pin 9 when the tightening torque reaches a certain level or more. Attachment for wire tools. 4. The inner peripheral surfaces of the insertion hole 10 and the locking flange 13 are formed in an uneven surface shape in which concave portions 11 and 14 and convex portions 12 and 15 are formed alternately. ,
A fixture for a live-wire tool according to any one of claims 1 to 3.