JPH0527702U - Cable drum for optical fiber - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the cable drum for optical fiber for multiple systems. In an optical fiber cable drum rotatably supported by a support frame, an electric rotary connector 8 having a plurality of electric paths provided coaxially with the axis of the cable drum between the support frame 12 and the cable drum 1, and a cable drum An optical / optical converter connected to the optical fiber cable 2 having a plurality of optical fibers wound around the cable, the electric path end on the cable drum side of the electric rotary connector 8 and the optical fiber on one end side of the optical fiber cable 2 respectively. Set up.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an optical fiber cable drum applied to a wired signal communication device of a mobile device, an optical fiber cable reel for temporarily installing an optical cable, and the like.

[0002]

[Prior Art]

 A conventional optical fiber cable drum will be described with reference to FIGS. 4A and 4B are cross-sectional views taken along lines CC and DD of FIG. 3, respectively.

In FIG. 3, the cable drum 1 is rotatably supported by a support frame 12 and a drum frame 6 provided on the moving device 4.

An optical rotary connector 16 is provided between the support frame 12 and the cable drum 1. One end of the optical rotary connector 16 is fixed to the support frame 12 (FIG. 4A). The other end side is coaxially fixed to the cable drum 1 via a rotary connector support frame 13 as shown in FIG. 4 (b). The optical rotary connector 16 is rotatable around an axis at a joint between the support frame 12 side and the cable drum 1 side.

Further, the electric / optical converter 9 in the signal communication device 5 having the amplifier 5 a and the electric / optical converter 9 and the support frame 12 side of the optical rotary connector 16 are connected by an optical fiber. Further, the optical fiber 11 at the end of the optical fiber cable 2 wound on the cable drum 1 is connected to the optical drum connector 16 on the cable drum side.

In FIG. 3, 3 is a motor and 7 is an electric wire. In the above, the electrical signal is subjected to electrical / optical conversion in the signal communication device 5 outside the cable drum 1 and passed through the optical fiber 14 outside the drum and the optical rotary connector 16 to be an optical signal which is wound around the cable drum 1. It is sent to the fiber cable 2.

[0007]

[Problems to be solved by the device]

 The optical rotary connector 16 of the conventional device can transmit only one optical signal to one axis in principle, and it is not possible to manufacture a hollow structure, so a maximum of two systems can be used for one cable drum. Only the optical signal (1 system in the case of FIG. 3) could be transmitted.

Therefore, in the case of transmitting signals of three or more systems by light, two or more cable drums are provided, or as shown in FIG. 5, the signals are transmitted before electrical / optical conversion. In the communication device 5a, a plurality of power signals are combined into one signal from the signal combining device 15, and then converted into an optical signal by the electric / optical converter 9 and then led to the cable drum 1. It was

[0009]

[Means for Solving the Problems]

 The present invention takes the following means to solve the above problems.

That is, in an optical fiber cable drum rotatably supported by a support frame, an electric rotary connector having a plurality of electric paths is provided coaxially with the axis of the cable drum between the support frame and the cable drum, An optical fiber cable having a plurality of optical fibers wound around the cable drum, and an electrical / electrical cable connected between the electric path end on the cable drum side of the electric rotary connector and the optical fiber on one end side of the optical fiber cable. And an optical converter.

[0011]

[Action]

 By the above means, when an electric signal is input from each of the plurality of electric circuit ends on the supporting frame side of the electric rotary connector, it is sent to the electric / optical converter on the cable drum side via the electric rotary connector and converted into an optical signal. It Each optical signal is then sent to the optical fiber of a fiber optic cable.

In this way, a plurality of electric signals can be easily sent to the optical fiber cable of the cable drum, and the range of use is greatly expanded.

[0013]

【Example】

 An embodiment of the present invention will be described with reference to FIGS.

2A and 2B are views taken along lines AA and BB of FIG. 1, respectively. The parts explained in the conventional example are given the same numbers and their explanations are omitted, and the parts related to the present invention will be mainly explained.

In FIG. 1, an electric rotary connector 8 having a plurality of electric paths is coaxially provided between the support frame 12 and the cable drum 1. A plurality of electric circuit ends of the electric rotary connector on the side of the cable drum 1 are connected to the input ends of the electric / optical converters 9 by electric wires 10 as shown in FIG. 2 (b). Further, its output end is connected to an optical fiber 11 at the end of an optical fiber cable 2 having a plurality of optical fibers wound around a cable drum 1. Further, the signal communication device 5b is provided with a plurality of amplifiers 5 ', the output of which is connected to the electric path end of the electric rotary connector 8 on the side of the support frame 12 by the electric wire 7.

In the above, the plurality of outputs of the signal communication device 5b are input from the plurality of electric circuit ends of the electric rotary connector 8 on the side of the support frame 12 through the electric wires 7. Then, it is sent to the electric / optical converter 9 on the side of the cable drum 1 through the electric rotary connector 8 and converted into optical signals. Then, each optical signal is sent to the optical fiber 11 of the optical fiber cable 2.

In this way, a plurality of electric signals can be easily sent to the optical fiber cable of the cable drum, and the range of use is greatly expanded. In addition, the cable drum can be made compact and high-performance, and the moving device equipped with this device can be made compact, lightweight and inexpensive.

[0018]

[Effect of the device]

 As described above, according to the present invention, it is possible to use a single cable drum to handle signals of multiple systems, which could not be optically transmitted in the conventional way, without using extra electric equipment. It becomes possible to perform transmission while maintaining the transmission capacity. Therefore, it is small, lightweight and inexpensive, and its range of use is greatly expanded.

[Brief description of drawings]

FIG. 1 is a configuration side view of an embodiment of the present invention.

2A and 2B are views taken along lines AA and BB in FIG. 1 of the same embodiment, respectively.

FIG. 3 is a configuration side view of a conventional example.

4 (a) and (b) are C- of FIG. 3 of the conventional example.
It is a C, DD perspective view.

FIG. 5 is an explanatory diagram of another example of the conventional example.

[Explanation of symbols]

 1 Cable Drum 2 Optical Fiber Cable 3 Motor 4 Moving Device 5, 5a, 5b Signal Communication Device 5'Amplifier 6 Cable Drum Frame 7 Electric Signal Line 8 Electric Rotary Connector 9 Electric / Optical Converter 10 In-Drum Electric Signal Line 11 In-Drum Optical fiber 12 Drum outside rotary connector support frame 13 Drum inside rotary connector support frame 14 Drum outside optical fiber 15 Signal synthesizer 16 Optical rotary connector

Claims (1)

[Scope of utility model registration request] 1. An optical fiber cable drum rotatably supported by a support frame, comprising: an electric rotary connector having a plurality of electric paths coaxially provided on the axis of the cable drum between the support frame and the cable drum. , An optical fiber cable having a plurality of optical fibers wound around the cable drum, and an electric cable connected between an electric path end on the cable drum side of the electric rotary connector and an optical fiber on one end side of the optical fiber cable. An optical fiber cable drum comprising an optical converter.