JPH04349310A - Flat cable - Google Patents

Abstract

PURPOSE:To facilitate removal of an insulating sheath and not to damage inner cable cores when connectors, terminal bases, etc., are mounted on the terminal part of a flat cable. CONSTITUTION:Bursts 9, one-side ends of which reach the buried positions of cable cores 2 and the other ends of which form openings on the back surface side of an insulating sheath 5, are provided in the insulating sheath 5 along the longitudinal direction of the cable.

Description

[Detailed description of the invention]

0001

[Industrial Field of Application] The present invention relates to a flat cable in which cable cores are arranged in parallel and an insulating sheath is coated on the outer periphery thereof, and in particular, a flat cable is provided with a tear in the insulating sheath and is used as a strip for connecting a connector or the like to the end of the cable. Regarding flat cables with improved performance.

0002

[Prior Art] An ultra-thin cable (hereinafter referred to as a flat cable) between the floor and carpet in an office.
There is an undercarpet wiring system installed. This wiring system has a number of advantages, such as being superior in safety for walking, etc., being clean in appearance, and making effective use of the floor surface, since all the wiring to the floor surface is covered with carpet.

[0003] In the above-mentioned wiring system, various cables are used for power lines, telephone lines, data lines, etc., and FIG. 4 shows a flat cable used for data lines. In the figure, a flat cable 1 has cable cores 2 arranged in parallel along its longitudinal direction. An internal conductor 3 is provided inside the cable core 2 . The cable core 2 has a structure in which the cable core 2 is covered with an insulator 4 made of polyethylene, for example, and further covered with an insulating sheath 5 made of heat-resistant vinyl or the like molded into a predetermined shape.

[0004] The flat cable 1 having the above structure has a connector and a terminal block attached to its terminal portion.
It is necessary to strip off the insulating sheath 5 of the terminal portion and further remove the insulator 4 of the cable core 2 to expose the internal conductor 3 to the outside. Therefore, in the past, those coatings were stripped off by a method as shown in FIG. That is, in the case of a normal round-shaped coating, the coating 6 at the end can be relatively easily removed using a stripper 7 having a round blade on the coating 6, as shown in FIG. 5(A). However, if the flat cable 1 has an irregularly shaped insulating sheath 5 as shown in FIG. A method is adopted in which the insulating sheath 5 is removed little by little while being careful not to damage the internal conductor 3.

[0005]

[Problems to be Solved by the Invention] In the flat cable 1 having the above-described structure, it takes a lot of effort to strip off the insulating sheath 5 at the terminal part, and since the insulating sheath 3 is difficult to strip off, it is easy to accidentally damage the inside of the cable. There was a risk of damaging the conductor 3.

The present invention was made in order to solve the above-mentioned problems, and it is possible to easily remove the insulating sheath when processing the cable end portion, and also prevent damage to the internal conductor. The purpose is to provide a flat cable that is less likely to cause damage.

[0007]

[Means for Solving the Problems] The flat cable of the present invention is a flat cable in which cable cores are arranged in parallel and an insulating sheath is coated on the outer periphery, one end of which reaches the buried position of the cable core in the insulating sheath, The cable is provided with a slit along the longitudinal direction of the cable, the other end of which opens on the back side of the insulating sheath.

[0008]

[Embodiments] Hereinafter, embodiments of the present invention will be explained based on the drawings. FIG. 1 is a perspective view of a flat cable of the present invention seen from above, and FIG. 2 is a perspective view of the same seen from below. In these figures, a flat cable 1 has two (or one) cable cores 2 in its insulating sheath 5.
are arranged in parallel. Cable core 2 is inner conductor 4
and an insulator 4 covering it.

[0009] For the flat cable 1 as described above, one end of the cable 1 reaches the buried position of the cable core 2 in the insulating sheath 5, and the other end opens on the back side of the insulating sheath 5. A crack 9 along the direction is provided. The shape of this tear 9 is not particularly limited, but any shape may be used as long as it does not impair the mechanical strength of the flat cable 1 as an outer sheath and allows the insulating sheath 5 to be easily stripped.

Next, a method of processing the end portion of the split flat cable manufactured by the above method will be explained with reference to FIG. First, connect the flat cable 1 in Figure 3 (A
), and as shown in FIG. 3(B), hold both ears 5a, 5a of the cable and lift it so as to bend it upward. Then, as shown in FIG. 3(C), one end of the crack 9 that has reached the buried position of the cable core opens, and the cable core 2 jumps out from the crack 9. Next, as shown in FIG. 3(D), the terminal processing is completed by cutting off the end of the insulating sheath 5 by a predetermined length, and it becomes possible to connect a connector, a terminal block, etc. to the exposed end. .

[0011]

As described above, according to the present invention, one end of the cable reaches the buried position of the cable core within the insulating sheath of the lid cable, and the other end opens on the back side of the insulating sheath. Since we created a crack along the longitudinal direction of
The cable core can be easily exposed without damaging the mechanical strength of the insulating sheath itself. Therefore, when attaching a connector or a terminal block to the terminal portion of a cable, it does not take much time and work efficiency is improved, and the risk of damaging the internal conductor inside the cable core with a cutter or the like is also avoided.

[Brief explanation of the drawing]

FIG. 1 is a perspective view from above of a flat cable of the present invention.

FIG. 2 is a perspective view from below of the flat cable of the present invention.

FIG. 3 is an explanatory diagram of a method for processing an end portion of a flat cable according to the present invention.

FIG. 4 is a perspective view of a conventional flat cable.

FIG. 5(A) is a diagram showing a conventional edge processing method using nippers. (B) is a diagram showing a conventional edge processing method using a cutter.

[Explanation of symbols]

1 Flat cable 2 Cable core 3 Internal conductor 4 Insulator 5 Insulating sheath 9 Rip

Claims (1)

[Claims] 1. A flat cable in which cable cores are arranged in parallel and an insulating sheath is coated on the outer periphery, wherein one end of the insulating sheath reaches a buried position of the cable core, and the other end opens on the back side of the insulating sheath. 1. A flat cable characterized by having a tear along the longitudinal direction of the cable.