JPH07335340A - Flat cable - Google Patents

Abstract

PURPOSE:To prevent discontinuity caused by repeated insertion and removing by forming a 0.5-1.5mm non-adhesive part in a root. CONSTITUTION:A 0.5-1.5mm non-adhesive part is formed in a root. Even if inserting and removing operation is repeated in such a way that the vicinity of the root of a reinforced tape is bent 90 deg., then this part is inserted into a connector, and a flat cable is pulled straight, discontinuity of the conductor is hardly seen and the number of inserting and removing can be increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat cable for in-machine wiring, which is used in combination with a pluggable connector.

[0002]

2. Description of the Related Art A laminated flat cable using a flat conductor has an excellent space factor,
It is widely used for in-machine wiring due to its advantages such as easy wiring exchange in combination with a removable connector. A reinforcing tape layer is usually provided at the end of the flat cable to facilitate the insertion and removal of the flat cable into and from the connector. Normally, the entire reinforcing tape layer is adhered to the flat cable, but it is also possible to provide a long non-adhesive layer 7 as shown in FIG. 3 and pinch this with a finger to insert or remove it from the connector. There is.

[0003]

However, in recent years, the miniaturization of equipment has progressed more and more, and a long reinforcing tape is an obstacle, so that the reinforcing tape has to be as short as 5 to 6 mm. . Along with this, when inserting the flat cable into the connector, as shown in FIG. 2, the flat cable is bent 90 degrees near the base of the reinforcing tape and pushed. However, it has been found that when such work is repeated, a problem that the conductor is broken at the root portion of the reinforcing tape is likely to occur.

[0004]

As a result of various studies for preventing the conductor breakage, the present inventor did not adhere the entire surface of the short reinforcing tape layer to the flat cable, but 0.5 to 0.5 at the root portion. By providing a non-adhesive part of 1.5 mm, the disconnection of the conductor will not occur even if the insertion / extraction work is repeated, such as bending the vicinity of the base of the reinforcing tape to 90 ° and pushing the part to insert it into the connector and straightening and pulling out the flat cable. I found it difficult to get up,
The present invention has been completed.

[0005]

[Example] A laminated flat cable in which 15 flat conductors having a width of 0.3 mm and a thickness of 35 μ are arranged in parallel at a pitch of 0.5 mm, and an adhesive layer is placed inside, and a polyester tape with an adhesive layer is laminated from above and below. Create
A 6 mm long reinforcing tape layer having a non-bonded portion of 0.5 to 1.5 mm at the root portion was provided on the end portion thereof. As a comparative example, one in which the entire surface of the reinforcing tape layer having a length of 6 mm was adhered to the flat cable was also prepared.

[0006]

As shown in FIGS. 1 and 2, the reinforcing tape of the flat cable is bent in the vicinity of its root at 90 ° and pushed into the connector to straighten the flat cable and pull it out from the connector. As a result of repeated insertion and removal, as shown in Table 1, in the case where a non-adhesive portion of 0.5 to 1.5 mm is provided at the root portion as compared with the case where the reinforcing tape layer is adhered to the entire flat cable, up to disconnection It can be seen that the number of repetitions of insertion and removal of No. 2 is remarkably increased, and it is difficult to break the wire.

[Brief description of drawings]

FIG. 1 shows pushing a flat cable with a reinforcing tape layer having a non-adhesive portion of 0.5 to 1.5 mm into a connector of the invention of the present application into a connector.

FIG. 2 shows a case where the entire reinforcing tape layer of a comparative example is adhered to a flat cable and is pushed into a connector.

FIG. 3 shows a lengthened reinforcing tape layer provided with a long non-adhesive portion for pinching with a finger when inserting / removing to / from a connector.

[Explanation of symbols]

1: Conductor 2: Polyester tape 3: Flat cable 4: Reinforcement tape layer 5: Reinforcement tape layer 0.5 to 1.5 mm non-adhesive part at the root part 6: Direction of pushing the flat cable into the connector 7: Long pinching with fingers Non-adhesive part 8: Connector 9: Connector pin

[Table 1]

Claims (1)

[Claims] 1. A laminate type flat cable using a flat conductor having a short reinforcing tape layer having a length of 10 mm or less at its end, and having a length of 0.1 mm at the base of the reinforcing tape layer.
A flat cable having a non-adhesive portion of 5 to 1.5 mm.