JPS59230209A - Flat cable - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] This invention relates to a flat cable. [Background Art] Conventional undercarpet wiring systems have
As shown in the figure, lower protection sheet 1 and flat cable 2
After laying three layers, ie, a top protection sheet 3 and a top protection sheet 3, the carpet 4 was covered with a carpet 4. The top protective sheet 3 is covered with tape 5 (third
(Fig.) to fix it to the floor. The carpet 4 is made of small pieces laid out in the form of tiles. The flat cable 2 is the second
As shown in the figure, three parallel strip-shaped flat conductors 6 are covered with an insulator 7. The insulator 7 has an upper layer material 7A and a lower layer material 7
It is formed by B. The thickness of each part is, for example, the conductor thickness to is 0.2 fl, and the thickness of the upper surface covering part of the insulator 7 is t.
The thickness t2 of the bottom coating part is also 0.18.
It is formed in tm. The lower surface protection sheet 1 is laid under the seven-rat cable 2 to protect it from sharp objects protruding from the floor surface. The thickness t3 of the lower surface protection sheet 1 is set to 0.151N.

However, since the flat cable 2 and the bottom protection sheet 1 are separated, the bottom protection sheet 1 and the flat cable 2 may shift during installation or use, as shown in Figure 3, and can be protected from sharp objects protruding from the floor. Cable 2 may not be protected.

In addition, it is necessary to install three layers of the lower surface protection sheet 1, the flat cable 2, and the upper surface protection sheet 3 independently, which makes the installation work complicated.

[Purpose of the invention]

This invention provides reliable protection against objects protruding from the floor.
The purpose is to provide cables with excellent workability.

[Disclosure of the invention]

In the seven-foot cable of the present invention, the thickness of the portion of the insulator that covers the lower surface of the conductor is made sufficiently thicker than the thickness of the portion that covers the upper surface. In other words, the thickness of the portion covering the lower surface is the same as that of a conventional lower surface protection sheet. Label the top surface of the insulator to identify the front and back sides.

An embodiment of this invention is shown in FIGS. 4 and 5. That is, the eight flat cables and three parallel strip-shaped flat conductors 9 are covered with an insulator 10, and the thickness i'2 of the portion of the insulator 10 that covers the lower surface of the conductor 9 is equal to the thickness i'2 of the portion that covers the upper surface of the insulator 10. The conductor 10 is made sufficiently thicker than the thickness of the insulator 10, and a core indicating line 11 indicating the center of each conductor 9 is printed on the upper surface of the insulator 10.

The core display line 11 is provided only on the front surface and also serves as a front and back identification display. The insulator 10 has an upper layer material 10A and a lower layer material 10B.
It consists of Elongated holes 12 are provided in the insulator 10 at a constant pitch in the longitudinal direction at the center and both side edges of each conductor 9. To give a specific example of the thickness of each part, to is 0,2
The fi and tl are 018 mackerel, and the sieve is 036 cod.

The installation work will be explained. Lay the flat cable 8 on the floor with the core display line 11 facing upward (Fig. 5 (A))
, a metal top protection sheet 13 is laid so as to cover the flat cable 8 (FIG. 5 0). The upper surface protection sheet 13 has two elongated holes 14 in the middle row of the flat cable 8.
be placed in a position consistent with the Attach the ground connectors 15 to both ends of the top protection sheet 130 (FIG. 50).

The ground connector 15 is made up of a folded piece that is inserted into the elongated hole 14 of the flat cable 8 and the top protection sheet 13 to sandwich the two, and has a protrusion that breaks through the insulator of the flat cable 8 and contacts the conductor. Earth connector 1
Reference numeral 5 electrically connects the central conductor 9 serving as the ground wire of the flat cable 8 and the top protection sheet 13, and prevents the flat cable 8 and the top protection sheet 13 from shifting. Thereafter, both upper surface lines of the upper surface protection sheet 13 are fixed to the floor over the entire length using a floor surface fixing tape 16 (FIG. 5, 0).

Although the flat cable 8 is laid in this way, the lower surface coating of the insulator 10 of the flat cable 8 has a thickness that doubles as a conventional lower surface protection sheet, so there is no need to provide a separate lower surface protection sheet, and the flat cable 8 and It is only necessary to install two layers including the top protection sheet 13. Therefore, the installation work is easy, and the flat cable 8 and the lower protection sheet do not become misaligned, so that they can be reliably protected against protrusions from the floor. Since the upper surface protection sheet 13 and the seven-rat cable 8 are connected by the ground connector 15, they will not shift.

In the above embodiment, the lower surface covering portion of the insulator 10 is made of the same material throughout, but the lower surface covering portion may be formed of two different layers.

〔Effect of the invention〕

The flat cable of this invention has the function of the conventional lower surface protection sheet (5) on the lower surface coating of the insulator, which eliminates the need for a lower surface protection sheet and has excellent workability. This has the effect of reliably protecting against objects protruding from the surface.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a conventional flat cable wiring system Om, Fig. 2 is a sectional view of the flat cable, Fig. 3 is an explanatory diagram of the poor installation state, and Fig. 4 is an illustration of an embodiment of the present invention. The cross-sectional view, FIG. 5 w~0, is an explanatory diagram of its installation. 8...Flat cable, 9...Conductor, 10...
・Insulator, 11...Wire core display! 1! (Front and back identification display)
, 13...Top protection sheet, to, gin, t'2...
Thick 6)

Claims (1)

[Claims] A plurality of parallel strip-shaped flat conductors are covered with an insulator, and a portion of the insulator that covers the lower surface of the conductor is sufficiently thicker than a portion that covers the upper surface, and the upper surface of the insulator is coated with an insulator. Flat cable with front and back identification markings.