JPH058738Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a cable clamping mechanism in a hand tool equipped with a wire stripper for cutting off the outer covering of a cable, such as a telephone line.

[Conventional technology]

Conventionally, when wiring telephone lines and the like, connectors and the like have been used to ensure the connection of the wiring. In this case, a hand tool for connector connection equipped with a wire stripper of the cable is used to cut off the outer coating of the cable connected to the above-mentioned connector or the like. However, although not shown, the conventional wire stripper installed in this type of manual tool is located between a fixed blade attached to a holder part on the fixed grip side and a movable blade attached to a slider part on the movable grip side. It was designed to directly insert the cable and cut off its outer covering.

[Problem that the invention attempts to solve]

Due to the above-mentioned configuration, conventional hand tools of this type have the following problems.

(1) When inserting a cable into the wire stripper of the above tool and stripping its outer sheath, if the cable is pulled in a direction other than perpendicular to the fixing grip, the cable will be held in the above perpendicular direction. Since there was no means to do so, there was a drawback that the internal sheathing and core wire of this cable were damaged.

(2) In addition, when cutting the outer sheath as described above, there is no means to hold this cable at right angles to the fixing grip, so if the cable is cut bent in a direction other than at right angles, the outer sheath may not be as desired. There was a drawback that an error (discrepancy) occurred between the cut length and the strip length due to the internal coating after actually being cut, and between this strip length and the core wire length.

This invention solves the above-mentioned problems of the conventional technology. When cutting the outer sheath of a cable, even if the cable is pulled in a direction other than perpendicular to the fixed grip, the inner sheath and core wire will be damaged. The cable clamping mechanism of the manual tool can be used to prevent errors (misalignments) between the desired length of the outer sheath to be cut, the length of the strip after actually being cut, and the length of the strip and the length of the core wire. This is what we provide.

[Means for solving problems]

This invention takes the following measures to solve the above problems. That is, a holder part on the fixed grip side that is fixed to the head, and a slider part on the movable clip side that is connected via a link mechanism to a movable body that performs crimping, pressing, cutting, etc. by sliding back and forth within the head. In the hand tool, the fixed blade of the holder part and the movable blade of the slider part come into contact with and separate from each other to cut off the outer covering of the holder part, in a manual tool in which the fixed blade of the holder part and the movable blade of the slider part come into contact and separate to cut the outer covering of the cable. A cable guide with a guide hole is fixed to the cable insertion side of the cable guide, and a clamper holder is installed oppositely to the holder part and the slider part located outside the cable guide with the guide hole of the cable guide as a reference. A cable clamping mechanism for a manual tool is constructed in which clampers, which grip the outer sheath of the cable from two sides when the two blades approach each other, are arranged oppositely so as to be able to swing under pressure.

[Effect]

When the outer sheath of the cable is cut off using a wire stripper in a manual tool equipped with a cable clamping mechanism configured as described above, there is a guide hole in the external position of the cutting station that ensures that the cable is held at right angles to the fixing grip. A cable guide with a cable guide is arranged to hold the upper part of the outer sheath to be removed at right angles through the guide hole, and
Furthermore, clampers are placed on the outside of this cable guide to face each other and elastically grip the outer sheath of the cable from both sides, ensuring the above-mentioned perpendicular state. In order to ensure that even if the cable is pulled in a direction other than perpendicular to the fixing grip, the outer sheathing at the periphery to be cut and its distal end can reliably maintain the perpendicular state as described above. In addition, since the clampers 13a and 13b, which are arranged opposite to each other, are shaft-fitted so that they can swing up and down, there is no need to release the clamped state of the cable after the work is completed, and the clamped state can be moved to a certain position by pulling the cable upward. When it reaches a certain position, the clamp state is released. Therefore, unclamping the cable may be performed at the same time as removing the sheath by pulling out the cable. Therefore, there is no need to damage the inner sheath or core wire at the location where the outer sheath is removed.
In addition, there may be errors (discrepancies) between the desired cut length of the outer sheath, the actual strip length of the inner sheath after being cut, and the length of this strip and the length of the core wire.
The outer sheathing of the cable can always be easily, accurately and safely removed.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

First, to explain the structure, as shown in Figs. 1 to 4, a holder 7 for press-fitting and crimping is housed inside the tip side of the U-shape, and is fixed at the position where the wire stripper C will be. On the outside of the proximal end of the head 1, which has a stepped portion 1a on which the blade 16 is arranged,
A fixed grip 2 having a window hole 2a parallel to the longitudinal direction at the position of the wire stripper C is fixedly disposed by inserting the shafts 3, 3 into the head 1 and caulking them. holder part A composed of a grip, and the head 1
The holder 7 is slid back and forth inside the base end of the holder 7.
A movable blade 17 is arranged at the position of the wire stripper C to form a stepped part 5a for making cuts, and a movable long hole 5c is provided in the central band of the surface part. The body 5 has the above long hole 5.
In c, it passes through the fulcrum shaft 4a at the tip, and
One end of a link 8 is swingably connected to the movable body 5 at an adjacent position by loosely inserting a link shaft 9A into the movable body 5, and a link shaft 9B is loosely inserted into the other end of this link 8. The movable grip 4 is connected so as to be able to swing up and down via a link mechanism mainly including the link 8, so that the slider portion B of the other grip is connected to the rear hole 5b of the movable body 5. and the elastic force of the coil spring 6 between the fixing pin 22 of the fixed grip 2 and the pressure regulating device 10 between the fixed grip 2 and the movable grip 4.
In this manual tool, which is assembled so that it can be freely opened in the form of a scissor-like butterfly by means of two types of elastic means, including fluid supporting elasticity, the following cable clamp mechanism is arranged at the position of the wire stripper C. .

The above cable clamp mechanism is constructed as follows. That is, as shown in FIGS. 1 to 4, one of the fixed blades 16, which is the main body of the wire stripper C, is placed on the stepped portion 1a of the head 1 on the side of the holder portion A so as to face toward the rear. A cable guide 15 is provided on the upper surface of the fixed blade 16 with a guide hole 15a into which a cable 23 (to be described later) can be fitted loosely, and is integrated with the fixed blade 16 by tightening a screw 20 inserted from the upper surface to the head 1. is fixed to.

Guide hole 15 of cable guide 15 according to the above
A clamper holder 11, which is U-shaped in plan view, is attached to the holder part A on the front side of the guide hole 15a with reference to a, and by screwing the screw 18A into the fixed grip 2, the crotch part is guided by the cable guide 15. It is attached in such a manner that it faces the other clamper holder 12, which will be described later, toward the hole 15a. The shaft 1 is inserted into the crotch opening of the clamper holder 11 in a horizontal axis arrangement.
9, one clamper 13A has a rectangular plate whose front and rear sides are formed into arcuate surfaces, and the other clamper 13B, which will be described later, has a rear hole that is loosely inserted into the shaft 19.
It is fitted with a shaft so that it can swing up and down in a facing manner.
A presser spring 14 whose base end is fixed under the neck of the screw 18A is elastically pressed against the upper surface of the clamper 13A. Therefore, the above-mentioned one clamper 13A is positioned so that its tip slightly protrudes from the hole edge surface of the guide hole 15a on this side toward the hole destination side, thereby causing the movable blade 17 to connect to the fixed blade 16 directly below. When approached, the cable 23 is configured to be able to press and grip the external surface of this side of the cable 23 from the front with the other clamper 13B, which will be described later.

Also, in the slider part B on the rear side of the guide hole 15a, a clamper holder 12, which is U-shaped in plan view, is installed in the slider part B on the rear side of the guide hole 15a, with the bottom surface of its front end placed on the movable blade 17 directly below, and the clamper holder 12 is placed from above on the movable blade 17 directly below. By tightening the screw 21 inserted over the movable body 5, the crotch opening is inserted into the guide hole 15 of the cable guide 15.
The movable blade 17 is arranged so as to face the one clamper holder 11 toward the direction a.
It is installed so that it can be moved as one unit. The other clamper 13B having the same shape as the above is attached to the shaft 19 inserted into the crotch portion of the clamper holder 12 in the same horizontal axis arrangement as described above.
The clamper 9 is pivotally fitted in the clamper 13A so as to be vertically swingable, with a loose fit in the rear hole relative to the clamper 9. In this case as well, the base end is placed on the upper surface of the clamper 13B by the clamper holder 1.
A presser spring 14 fixedly attached to 2 with a screw 18B is elastically pressed into contact with the spring 14. Therefore, the other clamper 13B is also positioned so that its tip slightly protrudes from the hole edge surface of the guide hole 15a on this side toward the hole destination side, thereby causing the movable blade 17 directly below to contact the fixed blade 16. When approached, the cable 23 is configured so that it can move forward integrally and press and grip the external surface of this side of the cable 23 from the rear with the one clamper 13A described above,
The overall structure is a cable clamp mechanism in a hand tool.

When removing the outer sheath of a cable using the wire stripper C, which is a manual tool with the above configuration, first, as shown in FIGS. When the legs are opened using the two types of elastic means, the two edges 16 and 17 of the wire stripper C are separated to the maximum extent, resulting in an open state. At this point, after inserting the cable 23 into the guide hole 15a provided in the cable guide 15 of the wire stripper C, as shown in FIG. When the head is in the crotch state, the holder 7 is held inside the head 1 by the above-mentioned two types of elastic means.
The movable body 5, which had been separated from the holder 7, moves forward within the head 1 by horizontally returning the link 8 due to the above-mentioned closing operation and pushing out the fulcrum shaft 4a based on this horizontally returning, and finally comes into contact with the holder 7. It will stop. That is, the movable blade 17 attached to the step 5a of the movable body 5 moves toward the fixed blade 16 attached to the step 1a of the head 1.
By advancing integrally with the double-edged blade 16 and stopping integrally when approaching the specified position, the double-edged blade 16,
17, the outer sheathing of the cable 23 can be regularly cut off.

When cutting the cable 23 described above, the double-edged blade 16,
A cable guide 15 fixed to the holder A side is disposed at a position outside of the cable guide 17, and its guide hole 15a ensures that the cable 23 remains perpendicular to the fixed grip 2. , and the above-mentioned cable guide 15 is located on the outside thereof.
Clampers 13A and 13B that elastically grip the outer covering of the cable 23 from the front and rear directions with reference to the guide hole 15a of the wire stripper C are arranged oppositely. Even if the cable guide 15 and both clampers 13A and 1 are bent in other directions,
3B ensures that the cable guide 23 around the ablation remains doubly perpendicular.

The above cable guide 15 and both clampers 1
By the cable clamp mechanism with 3A and 13B,
When cutting the outer sheath of the cable 23, it is ensured that the cable 23 is maintained at a right angle to the fixing grip 2, so that the inner sheath, core wire, etc. of the cable 23 at the cutting position are not damaged. In addition, it is possible to reliably prevent errors (discrepancies) between the desired resection length of the outer sheath and the actual strip length of the inner sheath after being cut, and between this strip length and the length of the inner core wire. can do. Therefore, when using the hand tool described above, it is always possible to easily, reliably and safely cut off the outer sheathing of the cable.

[Effect of idea]

Since this invention is constructed as described above, it has the following unique effects.

The fixed blade that serves as the cable insertion side, and the cable guide and clamper installed outside the movable blade double ensure that the cable is firmly held at right angles to the blade surface, so it cannot be removed from diagonal directions other than at right angles. Even when the cable is pulled, the cable is bent at the clamper part, and the inner sheathing or its core wire, which is located at the position where the outer sheathing is cut inward from the clamper part, is not damaged.

In addition, the clampers, which are arranged facing each other under pressure, are swingably provided, so they can grip and fix the cable from two directions, allowing the desired length of the outer sheath to be cut and the strip of the inner sheath after it has actually been cut. It is possible to prevent errors (misalignments) between the length and the length of the strip and the length of the core wire.

As described above, since the outer sheath of the cable can always be easily, accurately and safely removed, the quality and reliability of this type of manual tool can be greatly improved.

[Brief explanation of the drawing]

Figure 1 is a plan view of the hand tool according to this invention when it is not operated, Figure 2 is a longitudinal side view of the same part, and Figure 3 is a side view of the same part.
The figure is a partially longitudinal side view showing the cutting operation of the cable outer sheathing using the same tool, and FIG. 4 is an enlarged side view of the main part. 1... Head, 2... Fixed grip, 4... Moving grip, 5... Movable body, 6... Coil spring,
8...Link, 10...Pressure regulating device, 11,1
2... Clamper holder, 13A, 13B...
Clamper, 15...Cable guide, 15a...
...Guide hole, 16...Fixed blade, 17...Movable blade,
19... shaft, 23... cable, A... holder section, B... slider section.

Claims (1)

[Claims for Utility Model Registration] A link mechanism is interposed between the holder part A on the fixed grip 2 side fixed to the head 1 and the movable body 5 that performs crimping or pressing and cutting by sliding back and forth within the head. In this manual tool, the fixed blade 16 of the holder part and the movable blade 17 of the slider part come into contact with each other and separate from each other. A cable guide 15 with a guide hole 15a on the cable insertion side at a position outside the holder part in a section where the outer covering of the cable 23 is removed.
Further, a clamper holder 11,
12 are mounted facing each other, and each shaft 19 of both clamper holders has a clamper 1 that grips the outer sheath of the cable from two sides when the two blades approach each other.
A cable clamp mechanism for a manual tool, characterized in that 3A and 13B are arranged facing each other so as to be able to swing under pressure.