JPS62122012A - 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 (Industrial Application Field) The present invention relates to a cable having a power supply core connected to a power source and a signal core connected to an electric machine or electronic device. .

(Prior art) Conventional cables do not take into consideration the configuration of wire cores that are suitable for each connection point.
It was constructed by bundling a plurality of wire cores having conductors of the same diameter.

Generally, multiple cores are arranged in parallel on the same surface,
Cables bundled with paper tape or the like are known, but the bending direction of such cables is restricted, making wiring work difficult and inconvenient to package.

Therefore, the wire cores were bundled into a circle, but since the wires were simply wrapped with paper tape and bundled in places, they were untidy and difficult to handle, so the one shown in Figure 4 was devised.

This conventional cable is made by bundling wire cores 01 and covering the outer periphery of the wire core bundle with a resin outer sheath 02 that is embedded in the wire cores.

(Problems to be solved by the invention) However, with such conventional cables,
Because multiple wire cores of the same diameter were embedded in parallel within the outer skin, when used for signals, it was easy to pick up noise from the outside, and when the outer skin was removed, the wire cores were easily damaged. was there.

(Means for Solving the Problems) The present invention has been made for the purpose of solving the above-mentioned problems, and in order to achieve this purpose, the present invention includes the following:
In a cable equipped with a power supply core and a signal core formed by covering the outer periphery of a conductor with an insulator, the diameter of the conductor of the power supply core is greater than the diameter of the conductor of the signal core. The stranded wire was formed to have a large size and a plurality of signal cores were twisted together, the power supply core and the signal core were bundled, and the outer periphery of the wire was covered with a sheath.

(Function) Therefore, in the cable of the present invention, as described above, by forming the conductor diameter of the power wire core to be larger than the conductor diameter of the signal wire core, the power wire core can be connected to the power source. When connected, the voltage drop can be reduced, and since the signal wire core is made into a stranded wire in which multiple wires are twisted together, it is possible to reduce the voltage drop when the signal wire core is connected to an electric machine or electronic device. It is also possible to reduce the influence of external noise.

In addition, since the outer peripheries of the power and signal cores are only covered with a sheath, the sheaths can be removed without damaging the cores during wiring work, making it easy to remove both cores. can be done.

(Example) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In describing this embodiment, a bus cable used for domestic wiring will be taken as an example.

First, the configuration of the embodiment shown in FIGS. 1 to 3 will be explained.

Bus cable A is connected to telephone 41. as shown in FIG. Fire sensor 42. Gas sensor 43, iron 44. TV45. Bath automatic hot water supply system 46. Radio wave distributor 47. Radio wave mixer 48, parabolic antenna 49. T
V antenna 50° x 7 connectors 51. Electric shutters52. Intrusion sensor 53, entrance electric lock 54. Intercom55. It is connected to the entrance light 56, etc., and transmits control signals, audio signals, etc. to these controllers, and its operation is performed by the main controller 57 or the information outlet 5.
This is performed by a sub-controller 59 connected to 8.

This bus cable A includes two power supply cores 10, four signal cores 20, and a sheath 30.

The power supply wire core 10 and the signal wire core 20 are formed by covering the outer periphery of a conductor 11.21 made of annealed copper wire or the like with an insulator 12.22 made of vinyl, polyethylene, rubber, etc. with a substantially uniform thickness. The power wire core 10 is connected to the power source, and the signal wire core 20 is connected to the controller and the controller.

The power supply core 10 is formed to have a larger diameter (approximately 1.5 mm in diameter) than the conductor diameter of the signal core 20 (approximately 0.9 mm in diameter) in order to reduce voltage drop. The signal wire cores 20 are twisted together at two water wheel levels to reduce the influence of noise from external high-power electric wires, etc., and constitute two bundles of twisted wires.

One bundle serves as an audio signal line, and the other bundle serves as a control monitor signal.

Here, the table below shows the actually measured relationship between the twist pitch and the electromagnetic noise removal rate.

Therefore, the twisting pitch of the signal wire core 20 is 1 to 3.
A range of 1 nch is preferable.

As shown in FIG. 2, in both the wire cores 10 and 20, the two bundles of twisted wires of the signal wire core 20 are in contact with each other, and the two power wire cores 10 are connected to each other by the signal wire core 20. They are arranged so as to be in contact with the twisted wires of the bundle and are twisted together, and the outer periphery of the wires is covered by a cylindrical sheath 30. The size of these is such that the power wire core lO is inside the inner surface of the sheath 30. The signal wire core 20 and the inner surface of the sheath 30 are formed in such a size that a slight gap 23 is formed between the signal core 20 and the inner surface of the sheath 30 .

Note that the sheath 30 is made of resin such as vinyl, polyethylene, and chloroprene.

Further, the power wire core 10 and the signal wire core 20 are twisted in a direction opposite to the twisting direction of the twisted wires of the signal wire core 20.

Therefore, in the cable according to the embodiment of the present invention, the power wire core 10 and the signal wire core 20 are housed in a round shape within the sheath 10, and one bending direction is not restricted, making it easy to handle.

Furthermore, since the gap 23 is provided between the signal core 20 and the inner surface of the sheath 30, the sheath 30 can be easily removed.

Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and the present invention may be modified without departing from the gist of the present invention. included.

For example, in the embodiment, a bus cable used for domestic wiring is shown, but the use is not limited to industrial use.

In addition, in the example, the power supply core is made of two trees, and the signal wire core is composed of two bundles of twisted wires twisted together at the level of two waterwheels, but the number of wire cores for each is not limited to the example, Moreover, the arrangement is not limited to the embodiment.

Furthermore, in the example, the power supply wire core and the signal wire core were twisted together and housed in the sheath, but both wire cores were not twisted together and housed in the sheath, and the wire cores were placed in the gap between the wire core and the sheath. A filler may also be present.

(Effects of the invention) As explained above, in the cable of the present invention,
In order to ensure that the wire core has a configuration suitable for each connection point, the conductor diameter of the power wire core is made larger than the conductor diameter of the signal wire core, and multiple signal wire cores are formed. Since the twisted wires are twisted in units, it is possible to reduce the voltage drop and reduce the influence of external noise.

Further, since the power supply core and the signal core are bundled and the outer periphery thereof is covered with a sheath, it is easy to handle and the core can be easily taken out without damaging the core.

In addition to the above-mentioned effects, in the embodiment, both the power supply core and the signal core are housed in a circular cylindrical sheath, and the signal core and the inner surface of the sheath are Since the cables are sized and arranged so that a small gap is provided between them, the bending direction of the cable is not restricted, making wiring work easier and packaging easier.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a cable according to an embodiment of the present invention, Fig. 2 is a sectional view showing a cable according to an embodiment, Fig. 3 is a diagram showing domestic wiring using the cable according to an embodiment, and Fig. 4. is a sectional view showing a conventional cable. 10...Power supply core 20...Signal core 11.21...Conductor 12.22...Insulator

Claims (1)

[Claims] 1) In a cable equipped with a power supply core and a signal core formed by covering the outer periphery of a conductor with an insulator, the conductor diameter of the power supply core is equal to the conductor diameter of the signal core. A cable characterized in that the signal core is formed larger than the original size, the signal core is twisted in multiple units, the power supply core and the signal core are bundled, and the outer periphery of the cable is covered with a sheath. .