JP2545374Y2 - plug - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention relates to a plug for optical and electrical signal connection in which optical signals and electrical signals can be connected by the same member.

"Conventional technology" In recent years, digitalization has advanced in the audio world, and CDs (compact discs) as digital co-records
And DATs (Digital Audio Tape Recorders) have become popular.

In digital audio equipment, digital input / output terminals have been provided, and optical signal input / output terminals have been provided in parallel with electric signal input / output terminals so as to support optical signals in addition to electric signals. Was.

[Problem to be Solved by the Invention] If separate connectors are used as input / output terminals for optical signals and electric signals, there is a large space limitation.
In particular, in a compact audio device, it becomes a major obstacle to reducing the size and weight.

The present invention has been made in view of the above point, and has as its object to provide a more specific plug that can connect an optical signal and an electric signal with the same plug.

[Means for Solving the Problems] In order to solve the above-mentioned problems, in the present invention, an optical fiber for optical signal communication and a cable in which two connection cable conductors are concentrically covered on the outer periphery thereof, It consists of a plug body connected and fixed to the end,
The end of the cable and the plug body are connected by a holder, and concentric hot-side terminals and cold-side terminals constituting electrode contact portions are provided on the outer peripheral side of the plug body. To the hot side and the cold side terminal and the jack side terminal, and the optical fiber penetrating the center axis of the cable passes through the center axis of the plug body to the tip of the plug body. When the plug body is inserted into the jack side terminal, the tip of the optical fiber is made to face the light emitting / receiving section provided on the jack, so that both the transmission and reception of the electric signal and the transmission and reception of the optical signal are performed. ,
It is characterized in that they can be performed independently and simultaneously.

[Operation] In the embodiment of the plug for connecting both optical and electric signals shown in FIGS. 1 to 6, an optical fiber 11 for an optical signal, a hot side terminal 22 and a cold side terminal for an electric signal forming concentric circles. 24 is connected to the coaxial optical and electric signal connection cable 1 in one holder 26.

"Embodiment" Next, an embodiment of the plug according to the present invention will be described in detail with reference to FIG.

FIG. 1 is a sectional view of a single-headed plug as a first embodiment of a plug for connecting both optical and electric signals according to the present invention.

FIG. 4 is a sectional view of the plug taken along the line IV-IV in FIG.

In FIG. 1 and FIG. 4, a plug 2 for optical and electrical signal connection includes an optical fiber 11 for an optical signal inserted through the center and protruding short at the tip, and a concentric electrical fiber holding the optical fiber 11. A plug body composed of a hot side terminal 22 for a signal, an insulating sleeve 23, and a cold side terminal 24,
It comprises a holder 26 on which a knob 25 is formed, and is connected to a coaxial cable 1 in which a conductor is wound concentrically.

FIG. 2 is a side view showing a state where the single-headed plug according to the first embodiment is connected to the cable 1.

FIG. 3 is an enlarged sectional view of the connection cable taken along the line III-III in FIG.

2 and 3, in the cable 1, an optical fiber 11 for an optical signal is disposed at the axis, and a hot-side conductor 12 for an electric signal, an insulating coating 13, and a cold (earth) are provided outside the optical fiber 11.
It has a structure in which the side conductor 14 and the outermost insulating coating 15 are arranged concentrically.

The optical fiber 11 of the plug 2 is the same as the optical fiber 11 of the cable 1 extended.

Hot terminal 22 with optical fiber 11 penetrated in the center
The head 22a is formed into a single-head type, and is connected to the concentric hot conductor 12 of the cable 1 in the holder 26.

The tip of the insulating sleeve 23 bulges in a flange shape and is exposed on the surface.

The cold (earth) side terminal 24 is fitted to the tip of the holder 26 and is connected to the concentric cold side conductor 14 of the cable 1 in the holder 26.

The surface of the knob 25 formed on the holder 26 is provided with a non-slip knurl 26a as shown in FIG.

The holder 26 optically and electrically connects the cable 1 and the plug 2 inside the hollow and protects the connection. In this case, since both the hot-side terminal 22 and the cold-side terminal 24 have concentric cylindrical ends, the connection with them is made simply by covering the cylindrical ends with the annular conductors 12, 14. Therefore, the connection is simple.

FIG. 5 is a sectional view of an RCA pin plug type showing a second embodiment of the plug. FIG. 6 is an enlarged sectional view taken along the line VI-VI in FIG.

In FIGS. 5 and 6, a plug 2 'is an optical fiber for an optical signal, which is inserted into the center and has a short tip.
11, a hot terminal 22 for an electric signal for inserting the optical fiber 11 into the central hollow portion, an insulating bush 23 'and a cold terminal 24, and a holder 26 on which a knob 25 is formed.

The optical fiber 11 of the plug 2 'is the same as that of the first embodiment except that the optical fiber 11 of the cable 1 is extended.

The hot terminal 22 is of a sleeve type, and its rear end is connected to the hot conductor 12 of the cable 1 in the holder 26.

The insulating bush 23 'is interposed between the hot side terminal 22 and the cold side terminal 24 to insulate both.

The cold side terminal 24 fits inside the front surface of the holder 26,
The holder 26 is connected to the cold conductor 14 of the cable 1.

The holder 26 is a knob 25 with a non-slip surface
Is formed, and the cable 1 and the plug 2 are optically and electrically connected inside the hollow to protect the connection.

FIG. 7 is a sectional view of a single-head plug type integrated connector connected to the plug 2 of the first embodiment.

In FIG. 7, a connector 3 for both optical and electric signals (hereinafter simply referred to as a connector) is composed of a light emitting / receiving element 31 for optical signals arranged at the center and a hot side terminal 32 for electric signals. And cold side terminals 34 and insulator body
It consists of 36.

When the plug 2 is inserted, the light emitting / receiving element 31 comes into contact with the optical fiber 11 protruding from the plug 2.

The hot side terminal 32 has a base end connected to the hot side terminal 22 of the plug 2.
And is electrically connected to the contact portion, and a spring function of retaining is provided by a bent portion formed at the contact portion.

The cold side terminal 34 has a structure in which the cold side terminal 34 of the plug 2 comes into pressure contact with the cold side terminal 24 to make electrical contact therewith, and a bending action formed by bending the contact portion acts to prevent the spring from coming off.

The body 36 has a plug 2 to prevent the influence of external light.
No hole other than the hole 30 into which the is fitted is provided.

When the plug 2 is inserted into the connector 3, the optical fiber 11 projecting from the tip of the plug 2 comes into contact with the light emitting / receiving element 31, the hot terminal 22 of the plug 2 comes into contact with the hot terminal 32 of the connector 3, and , Plug 2
The cold terminal 24 on the side contacts the cold terminal 34 of the connector 3 to connect light and electricity.

FIG. 8 is a sectional view of an RCA pin plug type integrated connector connected to the plug 2 'of the second embodiment.

In FIG. 8, the connector 3 'is composed of an insulator body 36 provided with a hole 30 into which the plug 2' is fitted, a light emitting / receiving element 31 for an optical signal, and a hot side terminal for an electric signal.
32 and a cold side terminal 34.

The body 36 is provided with a plug 2 'to prevent the influence of external light.
There is no hole other than the hole 30 into which is inserted.

The light-emitting / light-receiving element 31 is disposed at the center of the hole 30 of the body 36, and comes into contact with the optical fiber 11 protruding from the plug 2 'when the plug 2' is inserted.

On the other hand, the hot side terminal 32 has a terminal protruding outside, an intermediate portion embedded in the body 36, a base end bent in the hole 30, and the bent curved surface presses the hot side terminal 22 of the plug 2 '. As a result, it is electrically connected and acts as a spring for retaining.

The cold-side terminal 34 has one terminal protruding, an intermediate portion embedded in the body 36, and the other exposed on the surface of the body 36.

When the plug 2 'is inserted into the connector 3', the optical fiber projecting from the tip of the plug 2 '
11 contacts the light emitting / receiving element 31, the hot terminal 22 of the plug 2 'contacts the hot terminal 32 of the connector 3',
The cold-side terminal 24 of the plug 2 'comes into contact with the cold-side terminal 34 of the connector 3' to make optical and electrical connection.

"Effects of the Invention" As described above, the plug according to the invention is one in which the plug for the optical signal and the plug for the electric signal are integrated without interfering with each other.

In other words, when the concentric hot and cold terminals are used as the plug main body, a so-called coaxial cable in which two connection cable conductors are coated is used as the connection cable for the plug main body. The connection between the plug body and the connection cable is extremely easy. Further, since both the plug body and the connection cable have their central axes, the optical fibers can be easily inserted so as to pass through the central axes. Therefore, a plug that can easily connect the plug body and the connection cable can be provided. Of course, the holder for connecting the connection cable and the plug body can also be used as a grip, so that the usability is the same as that of a normal plug, and there is no uncomfortable feeling.

Therefore, space saving can be achieved, and in particular, there is a remarkable effect in reducing the size and weight of small audio equipment and increasing its functionality.
In the invention of the present application, a conventional pin plug or 3.5φ plug or 6.3 having both the hot side terminal and the cold side terminal is provided.
The φ plug can be used as it is, and an optical coupling function is added to the φ plug, so that a plug structure which is compatible and has high practicality can be provided.

Further, according to the configuration of the present invention, since the electrical connection plug and the optical coupling plug are configured as a single plug united, the electrical connection or the optical coupling or the optical coupling or the Both can be achieved simultaneously.

This eliminates the need to verify the type of plug or the like each time a jack is inserted, and has a particularly remarkable operational effect that it is possible to reliably avoid confusing the insertion.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of the plug according to the present invention, FIG. 2 is a side view thereof, FIG. 3 is an enlarged sectional view taken along the line III-III of FIG. 2, and FIG. 1 is an enlarged sectional view taken along the line IV-IV in FIG. 1, FIG. 5 is a sectional view showing the second embodiment, FIG. 6 is a sectional view taken along the line VI-VI in FIG. FIG. 7 is a sectional view showing an example of a connector connected to the plug of the first embodiment, and FIG. 8 is a sectional view showing an example of a connector connected to the plug of the second embodiment. 1,1 ', 1 "... Cable 2,2' ... Plug 3,3 '... Connector 11 ... Optical fiber 12 ... Hot side wire 14 ... Cold side wire 22,32 ... Hot side terminal 24, 34: Cold side terminal 31: Light-emitting / light-receiving element

Claims (1)

(57) [Scope of request for utility model registration] An optical fiber for optical signal communication, a cable whose outer periphery is covered with two connecting cable conductors concentrically, and a plug main body connected and fixed to an end of the cable. The end and the plug main body are connected by a holder, and concentric hot side terminals and cold side terminals constituting electrode contact portions are provided on the outer peripheral side of the plug main body. Connected to the cable conductor, electrical conduction between the hot side terminal and the cold side terminal and the jack side terminal is achieved, and the optical fiber penetrating the central axis of the cable penetrates the central axis of the plug main body. When the plug body is inserted into the jack-side terminal, the tip of the optical fiber is pulled out to the end of the plug body. By being adapted to face the light receiving and emitting unit provided on the click, plug both transfer of transfer and the optical signal of the electrical signal, characterized in that so as to perform simultaneously independently of one another.