JPH079552Y2 - Untwisting jig for quad core of communication cable - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a jig for untwisting a quad core wire of a communication cable.

[Conventional technology]

The quad core of the communication cable is generally a star-shaped quad and is 2 to 4
The core of the book is twisted, and the warp is 0.5 mm to 1.2 mm including the coating, and the twist pitch is 20 to 80 mm.

When laying such a communication cable, cable connection work is involved, but in that case, it is necessary to untwist the quad core wires when connecting the core wires to each other. Conventionally, the untwisting process of the quad core wire is manually performed, so that not only a great amount of time is required for connecting the multi-pair cables, but also simple work is repeated, which is a painful work.

[Problems to be solved by the device]

When the twist of the quad core wire is manually returned, the open end of the quad core wire is grasped with a finger and rotated, or the quad core wire is squeezed multiple times by hand to untwist. If this is done with a jig, first, the rotating mechanism becomes complicated, and since the jig cannot move smoothly like a human hand with the squeezing method, twisting over a certain length is necessary. When I try to get it back
The twist accumulates and the twist does not return. Therefore, the length of the twist that allows the twist to be untwisted is limited to a few pitches at most. An object of the present invention is to solve the above problems and to provide a jig capable of returning a twist having a length of 10 pitches or more in a single step.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the present invention provides a plate having a fixing means for extending and fixing a quad core wire of a communication cable on an upper surface of an end thereof, and pressing the quad core wire extended on the plate. Slide along the core,
And a comb-shaped member formed by juxtaposing a plurality of projecting members of the same shape on one surface of a flat plate-shaped member at predetermined intervals in the longitudinal direction, and each of the above-mentioned sliders. A bottomed cylindrical round hole is provided at the center of the end of the protruding member, and a spring is inserted into and fixed to the bottom of the round hole so that it can expand and contract, and is fixed to the end of the spring and slidable in the round hole. And a pusher urged by the spring.

[Action]

Since the present invention is configured as described above, if the distance between the pressing elements is set to be equal to or less than the length at which the twist can be returned by one pressing element, the twisting of 10 pitches or more can be performed once. It can be returned in the ironing process.

〔Example〕

FIG. 1 is a perspective view for explaining an embodiment of the present invention. First
In the figure, 1 is a plate, 2 is a slider, 3 is a pusher,
Reference numeral 4 is a fixed core wire, and 5 is a quad core wire.

In order to operate this jig, first, the quad core wire 5 is fixed to the plate 1 by the core wire fixing means 4. Then the first
As shown in FIG. 7A, the quad core wire is held by a slider 2 having a plurality of pressing elements 3 arranged at intervals within a length capable of returning the twist, and the quad core wire is in a line at the pressed portion. To do so. Then, as shown in FIG. 1 (b), the slider 2 is slid toward the open end of the quad core wire 5 and squeezed.

2A is a partially exploded perspective view of the slider 2, and FIG. 2B is a sectional view of a pressing portion of the slider 2. Figure 2a, second
In FIG. B, 3 is a pusher, 3a is a support member, 3b is a pressing piece,
3c is a spring, 3d is a guide pin, 2a is a cylindrical round hole with a bottom, and 2b is a groove.

As shown in FIGS. 2a and 2b, when the pusher 3 is fitted and inserted into the cylindrical hole 2a with a bottom, the guide pin 3d is inserted into the groove 2b, so that the pusher 3 does not rotate and the pusher 3 bottoms. Since it is biased by the spring 3c fixed in the attached cylindrical round hole 2a, when the quad core wire 5 is pressed by the slider 2, an unreasonable pressure is applied in response to the returning condition of the twist of the core wire. Absent. Also,
The pushers are arranged at a predetermined interval according to the pitch of the quad core wires, so that the twists between the pushers move in the direction of the open ends of the quad core wires one after another and the length is sufficient for connecting the core wires. The twist of the Sano quad core can be restored. Furthermore, by twisting the shape of the bottom of the pressing element 3 into a corrugated shape or a comb shape at a predetermined interval (interval of core wire diameter, etc.), it becomes easier to untwist the quad core wire.

[Effect of device]

As described above, it is possible to twist a quad core wire having a sufficient length for connecting the core wires in one step, and moreover, if a plurality of quad core wires are arranged in parallel, this is also possible. At the same time, the twist can be returned. As described above, there is an effect that the steps which have been conventionally performed manually can be easily performed with a simple jig, and an effect that the mechanization of the core wire connection can be realized can be expected.

[Brief description of drawings]

1 is a perspective view for explaining an embodiment of the present invention, FIG. 2a is a partially exploded perspective view of a slider 2, and FIG. 2b is a sectional view of a pressing portion of the slider 2. 1 ... Plate, 2 ... Slider, 2a ... Cylindrical round hole with bottom, 2b
... groove, 3 ... presser, 3a ... support member, 3b ... pressing piece, 3c ... spring, 3d ... guide pin, 4 ... core wire fixing means, 5 ... quad core wire.

Claims (1)

[Scope of utility model registration request] 1. A plate made of a flat plate-like member having a fixing means provided on an upper surface of an end of the communication cable for extending a quad core wire and fixing the core wire at a position of a predetermined length from the tip of the quad core wire. And a slider that pushes the quad core wire extended on the plate and slides the quad core wire along the core wire to restore the twist of the quad core wire. A comb-shaped member formed by arranging a plurality of projecting members of the same shape side by side in the longitudinal direction at predetermined intervals, and a circular hole with a bottomed circular hole provided at the center of the end of each projecting member is provided. It is composed of a spring that is elastically press-fitted and fixed to the bottom, and a presser that is fixed to the end of the spring, is slidably inserted in the round hole, and is biased by the spring. The cable of the communication cable Twisted back jig of the core wire.