JP3099232U - Coaxial power cord structure - Google Patents

Abstract

A structure of a coaxial power cord is provided which effectively prevents the cord from being torn, enhances safety and efficiency at low cost.
A coaxial power cord is composed of an outer wire layer and an inner wire layer, and an inner insulating layer and an outer insulating layer made of an insulating material, so that the power cord is less likely to be broken even when used for a long time. The inner insulating layer is provided between the outer layer and the inner layer, and the outer layer and the inner layer are isolated from each other by performing insulation between the outer layer and the inner layer by the outer insulating layer and the inner insulating layer. The outer layer is composed of several cores, the inner layer is composed of several wires, and each of the bundles is composed of cores. Shall be.
[Selection diagram] Fig. 4

Description

The present invention relates to the structure of a coaxial power cord, and in particular, forms several wire bundles by twisting core wires in an inner layer or an outer wire layer in a coaxial power cord, and further couples the several wire bundles to each other. The present invention relates to the structure of a coaxial power supply cord in which the cord is unlikely to be broken even if it is bent for a long time due to the design of the wire bundle by twisting to form an inner wire layer (or an outer wire layer).

As shown in FIG. 1, in the structure of a known coaxial power cord, there is a coaxial power cord having an outer insulating layer 11, an outer layer (outer conductor) 12, an inner insulating layer 13, and an inner layer (inner conductor) 14. . The extension layer 14 is assembled such that several core wires 141 are twisted with each other.

Although the structure of the known coaxial power cord as described above has been used for many years, a major drawback is a break in the cord. The tearing rate after the bending test in the known general coaxial power cord as described above is 30% or less, and the higher the tearing rate, the more directly the resistance of the entire coaxial power cord tends to be directly affected. At the same time, the temperature of the entire wire is increased, and at the same time, the safety and efficiency are reduced. In general, manufacturers usually take measures to reduce the rate of cord breakage by increasing the number of bundles, but this method raises another problem that costs increase.
Therefore, in view of the above-mentioned drawbacks, the present invention provides a coaxial power cord structure of the present invention for effectively preventing tearing without increasing cost and improving safety and efficiency in use.

The coaxial power cord is composed of an outer layer and an inner layer, and an inner insulating layer and an outer insulating layer made of an insulating material so that the wire bundle is less likely to be broken even when the power cord is used for a long time. The outer layer and the inner layer are provided between the outer layer and the inner layer, and the outer layer and the inner layer are isolated and insulated from each other by the outer insulating layer and the inner insulating layer. The outer layer is constituted by several core wires, the inner layer is constituted by several wire bundles, and each of the wire bundles is constituted by a core wire.

According to the present invention, it was possible to effectively prevent the coaxial power cord from being torn without increasing the production cost, thereby achieving the object of increasing safety and efficiency in use.

As shown in FIG. 2, in the first embodiment of the present invention, the front and rear ends of the coaxial power cord 2 are respectively connected to the power cord sleeve 3, and particularly where the coaxial power cord 2 is connected to the power connection sleeve 3. The connection point A is where the tear is most likely to occur in the coaxial power cord 2.

As shown in FIGS. 3 and 4, the structure of the coaxial power cord 2 mainly includes an outer insulating layer 21, an outer wire layer 22, an inner insulating layer 23, and an inner wire layer 24. The outer insulating layer 21 and the inner insulating layer 23 are made of an insulating material, and the inner insulating layer 23 is provided between the outer layer 22 and the inner layer 24. By providing the inner insulating layer 23 and the outer insulating layer 21, the inner layer 24 and the outer layer 22 are covered, and the outer layer 22 and the inner layer 24 are isolated and insulated from each other so that the outer layer 22 and the inner layer 24 are separated. Prevent short circuit from causing interference with each other. The outer wire layer 22 is mainly composed of several core wires, and the inner wire layer 24 is composed of several wire bundles 241 (the number of the wire bundles is preferably seven or more). Each of the wire bundles 241 is composed of several core wires 2411. The wire bundle 241 prevents the coaxial power cord 2 from being broken even if the coaxial power cord 2 is bent for a long time. Arranges the other ray bundles 241 in a circle around the one ray bundle 241. Ideally, the number of core wires 2411 of the one wire bundle 241 serving as the center is 29, and the number of core wires 2411 of each of the other wire bundles 241 arranged in a circular shape is 26. Ideally a book. Ideally, the number of core wires 2411 of the extension layer 24 constituted by all the wire bundles 241 is 185, and the number of core wires of the outer wire layer 22 is equal to the number of core wires 2411 of the outer wire layer 24.

As shown in FIG. 6, in the second embodiment of the present invention, the outer wire layer 22 between the outer insulating layer 21 and the inner insulating layer 23 is combined so that several wire bundles 221 are twisted with each other. The wire bundle 221 is also configured by combining several core wires so as to be mutually twisted.

FIG. 3 is a three-dimensional sectional view of a known coaxial power cord. FIG. 2 is a partially enlarged view of a known coaxial power cord. FIG. 4 is a diagram showing an embodiment of the present invention. It is a three-dimensional sectional view in the present invention. FIG. 3 is a plan sectional view of the present invention. FIG. 3 is a three-dimensional sectional view of the extension layer in the present invention. FIG. 3 is a partially enlarged view of an extension layer according to the present invention. FIG. 4 is a sectional view showing an embodiment of the present invention.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Coaxial power line 11 Outer insulating layer 12 Outer layer 13 Inner insulating layer 14 Inner layer 141 Core wire 2 Coaxial power cord 21 Outer insulating layer 22 Outer layer 221 Wire bundle 23 Inner insulating layer 24 Inner layer 241 Wire bundle 2411 Core wire 3 Power cord sleeve
A Connection point

Claims (2)

In the structure of the coaxial power cord mainly composed of the outer insulating layer, outer layer, inner insulating layer, and inner layer,
The structure of the coaxial power cord, wherein the inner layer is formed by twisting several wire bundles with each other, and each wire bundle is formed by twisting several core wires with each other. 2. The coaxial power cord according to claim 1, wherein the outer layer is formed by twisting wire bundles with each other, and each of the wire bundles is also formed by twisting several core wires with each other. Construction.

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