JPS6347229B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for connecting a conductor terminal to a flat cable.

As shown in Fig. 1, indoor vertical trunk cables for high-rise buildings, etc., are made of a multi-core conductor 10' in which a plurality of conductors 1', . A flat single-core cable covered with a plastic sheath 3' is
Articles may be used collectively.

In this case, at the terminal of the flat single-core cable, an outlet multi-core conductor 100' is used as shown in FIG.
The conductor terminal A' is compressed and connected to the cable sheath end 30', and it is necessary to cover the space between the conductor terminal A' and the cable sheath end 30' with a watertight layer B' by taping. In this case, if the lead length of the multi-core conductor is increased, the taping amount of the taping layer increases, which is disadvantageous to the taping operation, and therefore it is desirable to shorten the lead length of the multi-core conductor.

However, when compressing and connecting a conductor terminal to a lead-out multi-core conductor, the width (lateral direction) of the lead-out multi-core conductor
The spread of the multi-core conductor is unavoidable, especially since the multi-core conductor has a configuration in which multiple circular conductors are arranged horizontally in a line, so the spread is large. As the distance between the conductor terminal and the end of the insulating layer becomes shorter, the increase in the width of the multi-core conductor spreads to the end of the insulating layer, which may damage the insulating layer. Some flat cables have a plurality of insulated conductors arranged in a row horizontally and a flat rubber or plastic sheath on the outside. The cable insulating layer is only slightly strained due to the spreading, and the insulating layer is substantially not damaged. Therefore, the above problem of damage to the insulating layer is unique to flat cables in which a plurality of conductors are arranged in a horizontal line and an insulating layer is coated on the outside.

The present invention aims to eliminate damage to the end of the cable insulation layer due to the expansion of the width due to compression of the multi-core conductor, even if the length of the multi-core conductor is shortened.

That is, the method for connecting a conductor terminal to a flat cable according to the present invention is a multi-core conductor of a flat cable in which a multi-core conductor in which a plurality of conductors are closely arranged in a horizontal row is coated with a rubber or plastic insulation layer. In this method, the distance between the end of the rubber or plastic insulation layer and the conductor terminal is set to 1 to 2 cm, and the lateral compressive elongation of the multi-core conductor is restrained.

The present invention will be explained below with reference to the drawings.

In Fig. 3, C indicates a flat cable, and as shown in Fig. 4, a multi-core conductor 10 in which a plurality of stranded conductors 1, . It has a structure in which a rubber or plastic sheath 3 is coated on top of the rubber or plastic sheath 3,
A multi-core conductor is exposed at the terminal. A indicates a conductor terminal, which has a flat conductor insertion hole 4 as shown in FIG. 5, and the width and length of the insertion hole 4 are approximately equal to the width and length of the multi-core conductor, respectively. ing.

According to the present invention, in order to compressively connect a conductor terminal to the lead multi-core conductor, the conductor terminal A is first inserted into the lead multi-core conductor 100 through the conductor insertion hole 4, as shown in FIG. 6A. In this case, as described above, it is advantageous to make the distance l between the terminal A and the cable insulating layer end 21 as short as possible in view of the taping of the watertight covering, but when the conductor terminal is compressed as described later, the cable insulating layer Keep a distance of 1 to 2 cm to avoid damaging the

After inserting the conductor terminal into the lead-out multi-core conductor,
As shown in FIG. 6B, the conductor terminals A are pressed together using the compression dies 5 and 6 so as to restrict the lateral extension a of the multi-core conductor 100 due to compression. In this case, lateral elongation of the multicore conductor is acceptable provided that the elongation does not damage the ends of the cable insulation layer. Experiments have shown that when the distance between the cable insulation layer end and the conductor terminal is 1 to 2 cm, damage to the cable insulation layer end can be avoided if the multi-core conductor width after compression is less than the cable sheath width. Therefore, the width W of the groove of the compression die 5 should be equal to or less than the width of the cable sheath.

As described above, according to the present invention, a conductor terminal is attached to the open multi-core conductor of a flat cable in which a multi-core conductor in which a plurality of conductors are closely arranged in a horizontal row is coated with a rubber or plastic insulating layer. The distance between the end of the cable insulation layer is very short (1 to 2
cm), the lateral elongation of the lead-out multi-core conductor due to compression is restrained within a range that does not damage the ends of the cable insulation layer, thus avoiding such damage to the cable insulation layer. conductor terminals can be compressed and connected. Furthermore, since the distance between the conductor terminal and the end of the cable insulation layer can be shortened, the taping operation for making the space between them watertight can be carried out in a short time.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing a known flat cable, Fig. 2 is an explanatory diagram showing the terminal part of the cable, Fig. 3 is an explanatory diagram showing the terminal and flat cable used in the present invention, and Fig. 4 is an explanatory diagram showing a terminal part of the cable. 5 is an explanatory view showing the cross section and the cross section in FIG. 3, and FIGS. 6A and 6B are explanatory views showing the present invention. FIG. Figure 6B
1 and 2 respectively show the results after terminal compression. In the figure, C is a flat cable, 1,... are conductors, 10 is a multi-core conductor, 2 is an insulating layer, A is a terminal, 5
is a die.

Claims (1)

[Claims] 1. In a method of compressively connecting a conductor terminal to a multi-core conductor of a flat cable, in which a multi-core conductor in which a plurality of conductors are closely arranged in a horizontal line is coated with a rubber or plastic insulating layer, the ends of the rubber or plastic insulating layer and A method for connecting conductor terminals to a flat cable, characterized in that the distance between the conductor terminals is set to 1 to 2 cm, and the lateral compressive elongation of the multicore conductor is restrained.