JPS6228014Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention consists of a shielded cable with a drain wire,
Related to shielded cables such as coaxial cables and multi-core shielded cables.

This type of shielded cable has a protective jacket around the outer periphery of the shield, and depending on manufacturing conditions and the material of the jacket, the resin for the jacket may dig into the braid of the shield, causing the strip of the jacket to break. Sexuality may be significantly impaired. In addition, if a resin with high mechanical strength is used to increase the mechanical strength of the outer sheath, even if the braid angle of the shield body is made small, the outer sheath resin may become slightly stuck to the shield body due to thermal contraction. As a result, the stripping properties of the jacket are severely impaired and it becomes impossible to strip the strips unless a considerable amount of force is applied.

In view of this point, the object of this invention is to provide a shielded cable that always has good stripping properties, regardless of the material of the resin for the jacket or the manufacturing conditions.

Therefore, according to this invention, an insulated wire, a shield body provided on the outer periphery of the insulated wire, a fluorine resin tape provided on the outer periphery of the shield body, and a fluororesin tape provided on the outer periphery of the fluorine resin tape. A shielded cable comprising an outer jacket is formed.

In this case, if the fluororesin tape is wound spirally around the outer periphery of the shield body, the tape can be displaced to some extent during stripping of the outer cover, thereby improving stripping properties.

Furthermore, if the fluororesin tape is provided vertically on the outer periphery of the shield body, no wrapping power is required and the manufacturing cost becomes economical.

In any case, the structure of this invention has the effect of significantly improving the strippability of the outer jacket.

Next, this invention will be explained in more detail with reference to the drawings.

In FIG. 1, a fluororesin tape 3 according to this invention is spirally wound around the outer periphery of a shield body 2 provided on the outer periphery of an insulated wire 1, and a jacket 4 is wrapped around the outer periphery of the fluororesin tape 3. A shielded cable 5 according to this invention is formed.

Similarly, in FIG. 2, a fluororesin tape 6 according to this invention is vertically arranged around the outer periphery of a shield body 2 provided on the outer periphery of an insulated wire 1, and an outer sheath 7 is applied to the outer periphery. Shielded cable 8
An example of forming a is shown.

According to the configuration of the present invention, the fluororesin tape 3, which has excellent mechanical, thermal, and electrical properties and is highly durable, is placed between the shield body 2 and the outer cover 4, 7. 6 intervening, not only increases the reliability of the shielded cable, but also the rich lubricity of the fluororesin tapes 3 and 6 allows the outer sheaths 4 and 7 to
The effect of significantly improving stripping properties is obtained.

By the way, tetrafluoroethylene-ethylene copolymer resin (hereinafter referred to as
The sheath stripping force of a conventional shielded cable using ETFE (referred to as ETFE) was 8.4 kg, whereas
With this invention, the thickness is 0.1 as a fluororesin tape.
When wrapping a 4mm polytetrafluoroethylene sintered tape without wrapping and using ETFE as the outer sheath, the sheath stripping force was reduced to 1.7 kg, nearly one-fifth of the conventional value.

In the same way, make polytetrafluoroethylene resin baking tape.
The sheath stripping force when wrapping with 1/2 wrap is
The stripping force was 2.9Kg, and even in this case, the stripping force was reduced to nearly one-third of the conventional one.

Therefore, after the outer sheath of the shielded cable according to this invention is torn with a stripper, the outer sheath at the end of the cable can be easily stripped by simply pulling it by hand in the direction of the arrow shown in Fig. 3. did it.

As described above, according to this invention, by interposing the fluororesin tape between the shield body and the outer sheath, the stripability of the outer sheath can be improved even when a resin with a high heat shrinkage rate is used for the outer sheath. An extremely good shielded cable can be provided.

Note that this invention is not limited to the embodiments, and can be modified in various ways within the scope of the idea of this invention, and it goes without saying that shielded electric wires with outer jackets are also within the scope of the idea of this invention. .

[Brief explanation of drawings]

1 and 2 are partial end plan views of a shielded cable according to the invention showing different embodiments, and FIG. 3 is an explanatory diagram showing a strip state of the shielded cable. 1: Insulated wire, 2: Shield body, 3, 6: Fluorine resin tape, 4, 7: Outer covering.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. An insulated wire, a shield provided on the outer periphery of the insulated wire, a fluoroplastic tape provided on the outer periphery of the shield, and a fluoroplastic tape provided on the outer periphery of the fluoroplastic tape. A shielded cable comprising an outer sheath. 2. The shielded cable according to Claim 1 of the Utility Model Registration Claim, characterized in that the flexible resin tape is wrapped around the outer periphery of the shield body. 3. The shielded cable according to Claim 1 of the Utility Model Registration Claim, characterized in that the flexible resin tape is provided vertically on the outer periphery of the shield body.