JP2009117296A - External signal output terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To omit a circuit board for the purpose of connection between an input terminal part and an output terminal part enabling down-sizing in an external signal input terminal. <P>SOLUTION: The external signal input terminal 10 includes the input terminal part 14 having a plurality of input signal terminals detachably installed connectable to respective one end side connectors of a plurality of numbers of input signal cables to receive external signals, the output terminal part 16 having a plurality of output signal terminals detachably installed connectable to respective other end side connectors of a plurality of output signal wires, a connecting part 18 connecting the respective input signal terminals of the input terminal parts 14 and the respective output signal terminals of the output terminal part 16 by a predetermined connecting method by using an electric conductive member, and a housing 12 integrally connecting the input terminal part 14, the output terminal part 16, and the connecting part 18. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an external signal output terminal, and more particularly to an external signal output terminal for connecting an input signal cable for receiving an external signal and an output signal line on a predetermined device side.

  For example, a connection cable is used to connect a receiver and a video device or the like. However, depending on the case, the specification of the signal cable on the receiver side and the specification of the signal line on the video device side may be different. In such a case, a connection terminal device for connecting the signal cable and the signal line is used. This connection terminal device is a type of connection connector device having an input side terminal portion detachably attached to a signal cable connector on one end side and an output side terminal portion detachably attached to a signal line connector on the other end side. Since an external signal from the receiver is input to a video device or the like, it can be called an external signal input terminal device or simply an external signal input terminal.

  In Patent Document 1, as an impedance matching device, a coaxial connector that detachably connects a connector connected to a digital communication coaxial cable of a computer, and a modular jack that detachably connects a modular plug connected to a twisted pair wire. Is provided in the case by impedance matching. Here, the coaxial connector is attached to the auxiliary board, the components of the impedance matching circuit and the modular jack are mounted on the circuit board, then the auxiliary board and the circuit board are placed in the body of the case, and the coaxial connector leads are connected to the circuit. It is described that soldering is performed on the board, and finally the case cover is fixed to the body for assembly.

JP-A-5-3415

  As shown in Patent Document 1, a circuit board is used to connect a connector of a signal cable that receives an external signal and a connector of a signal line, and an external signal that is a connection terminal device including the circuit board. Input terminals are configured. Therefore, the external signal terminal of the prior art has a work process such as soldering to be connected to the circuit board and includes the circuit board, so that the size is increased.

  An object of the present invention is to provide an external signal input terminal that can be miniaturized. Another object is to provide an external signal input terminal that can omit the circuit board. The following means contribute to at least one of the above objects.

  An external signal input terminal according to the present invention includes an input terminal portion having a plurality of input signal terminals that can be coupled to and detachable from each of one end side connectors of a plurality of input signal cables that receive external signals, An output terminal portion having a plurality of output signal terminals that can be coupled to and detached from each of the other end side connectors of the output signal line, each input signal terminal of the input terminal portion, and each output signal terminal of the output terminal portion And a housing for connecting and connecting the input terminal portion, the output terminal portion, and the connection portion in an integrated manner.

  In the external signal input terminal according to the present invention, it is preferable that the plurality of input signal cables include a video signal cable and left and right stereo audio signal cables.

  In the external signal input terminal according to the present invention, the plurality of output signal lines include a monaural audio signal line, and the connection portion includes the input signal terminals of the left and right stereo audio signal cables and one monaural audio signal line. Are preferably electrically connected to each other by a predetermined connection method to switch between a stereo audio signal and a monaural signal.

  With the above configuration, the external signal input terminal is coupled to the input terminal portion of the input signal cable that receives the external signal and can be coupled to the one end side connector of the input signal cable, and to the other end side connector of the output signal line. An output terminal portion having an output signal terminal that is detachably provided, each input signal terminal of the input terminal portion, and each output signal terminal of the output terminal portion by a predetermined connection method using an electrical conduction member A connecting portion to be connected, an input terminal portion, an output terminal portion, and a housing for integrally connecting the connecting portion are provided. Thus, since the input terminal portion, the output terminal portion, and the connection portion are integrated, the size can be reduced. Further, since each input signal terminal of the input terminal section and each output signal terminal of the output terminal section are connected by a predetermined connection method using an electrical conduction member, the circuit board can be omitted.

  In the external signal input terminal, the plurality of input signal cables include a video signal cable and left and right stereo audio signal cables, so that the video signal cable for receiving the external signal and the output connected to a predetermined device The signal line can be connected with a miniaturized external signal connection terminal.

  Further, in the external signal input terminal, the plurality of output signal lines include monaural audio signal lines, and the connection portions are the input signal terminals of the left and right stereo audio signal cables and the output signal terminals of one monaural audio signal line. Are electrically connected by a predetermined connection method to switch between a stereo audio signal and a monaural signal. Thereby, a circuit board is abbreviate | omitted and switching between a stereo audio | voice signal and a monaural signal can be performed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the input signal cables for receiving external signals are described as a total of three video signal cables and left and right stereo audio signal cables, but this is an example for explanation. Other numbers may be used, or signal cables having contents different from these may be used, for example, data signal cables.

  FIG. 1 is a perspective view of the external signal input terminal 10, (a) is a perspective view from the front side, and (b) is a perspective view from the back side. 2A and 2B are three views of the external signal input terminal 10, wherein FIG. 2A is a plan view, FIG. 2B is a front view, and FIG. 2C is a side view. FIG. 3 is a cross-sectional view of the external signal input terminal 10.

  The external signal input terminal 10 includes a housing 12, three input terminal portions 14 provided on the front side of the housing 12, one output terminal portion 16 on the back side of the housing 12, and an input terminal portion inside the housing 12. 14 and the output terminal part 16 are comprised including the connection part 18 connected.

  The housing 12 is a housing member having a function of holding the input terminal portion 14 and the output terminal portion 16 while forming the outer shape of the external signal input terminal 10 and disposing the connection portion 18 therein. The housing 12 can be obtained by using an appropriate plastic material and integrally forming the input terminal portion 14, the output terminal portion 16, and the connection portion 18. For this integrated molding method, a technique such as a different color molding method or an insert molding method can be used. It is preferable to use a plastic material having an appropriate strength and sufficient insulation. For example, an epoxy resin, a polycarbonate resin, or the like can be used.

  The input terminal portion 14 is a connection terminal portion to which a connector at one end of an input signal cable that receives an external signal can be coupled and detachably connected. The input terminal portion 14 has an input signal terminal inside, which is in contact with the signal terminal of the one end side connector of the input signal cable and is electrically connected to each other. In the example of FIG. 1, three input terminal portions 14 are shown so that one end side connectors of three input signal cables (not shown) can be inserted. The three input signal cables not shown here are, for example, a video signal cable from a receiver and left and right stereo audio signal cables.

  Thus, here, the input signal is an input signal when viewed from the external signal input terminal 10 and an output signal when viewed from the receiver. The name of the input signal cable is also a name as viewed from the external signal input terminal 10, and when viewed from the receiver, it is an output signal cable.

  The output terminal portion 16 is a connection terminal portion to which a connector on the other end of an output signal line connected to a device (not shown) such as a video device can be coupled and detachably connected. The output terminal portion 16 has an output signal terminal, which contacts the signal terminal of the other end side connector of the output signal cable and is electrically connected to each other. In the example of FIG. 1, there are seven signal lines of an output signal cable (not shown), and one output terminal portion 16 having seven output signal terminals corresponding to the connector terminals corresponding to each signal line is provided. It is shown. The seven signal lines of the output signal lines not shown here are a monaural audio signal line, three color video signal lines, and three control signal lines.

  As described above, the output signal is an output signal as viewed from the external signal input terminal 10 and is an input signal as viewed from the video equipment. The name of the output signal line is also a name as viewed from the external signal input terminal 10, and when viewed from the video equipment, it is an input signal line.

  The connection part 18 is an electrically conductive member that connects each input signal terminal of the input terminal part 14 and each output signal terminal of the output terminal part. The electrically conductive member is a plurality of members arranged insulated from each other in order to connect each input signal terminal and each output signal terminal with a predetermined connection method. As such an electrically conductive member, an appropriate metal wire or metal plate can be used. In some cases, a resistance element can be used as the electrically conductive member.

  For example, the input signal terminals of the left and right stereo audio signal cables and the output signal terminal of one monaural audio signal line are electrically connected by a predetermined connection method, and the stereo audio signal and the monaural signal are connected. In order to perform switching, a resistance element is used as an electrically conductive member. That is, the input signal terminal of the left stereo audio signal cable and the output signal terminal of the monaural audio signal line are connected by a resistance element, and the input signal terminal of the right stereo audio signal cable and the output signal of the monaural audio signal line are connected. Connect the terminal with another resistive element. As a result, it is possible to suppress the backflow of the signal between the signal of the left stereo audio signal cable and the signal of the right stereo audio signal cable, and output the signal as one monaural signal.

  As described above, the connection unit 18 has a function of switching signals between the input signals at the plurality of input signal terminals and the output signals at the plurality of output signal terminals by a predetermined connection method. I can do it. In the example of FIGS. 1 to 3, the connection portion 18 that can perform such signal switching is provided inside the housing 12. However, the connection portion 18 is simply provided between the input signal terminal and the output signal terminal. It is also possible to perform only one-to-one connection. In this case, the switching function between signals can be provided outside the external signal input terminal 10, for example, on the output signal line side.

  Thus, the external signal input terminal 10 can be reduced in size by integrally connecting the input terminal portion 14, the output terminal portion 16, and the connection portion 18 by the housing 12. In addition, the circuit board used in the prior art can be omitted, and thus the soldering process and the like necessary in the prior art can be omitted.

  FIGS. 4 and 5 are diagrams showing a VTR jack assembly 20 using the external signal input terminal 10 described in FIGS. 1 to 3. 4 is a perspective view of the VTR jack assembly 20, and FIG. 5 is a sectional view thereof. Here, three input signal cables 6 for receiving external signals from a receiver (not shown) and an external signal line 8 connected to a video device (not shown) are shown.

  4 shows a perspective view from the back side of the housing 22 of the VTR jack assembly 20, and therefore, the external signal input terminal 10 described with reference to FIGS. 1 to 3 only shows the output terminal portion 16. FIG. . FIG. 5 shows a state in which the external signal input terminal 10 is held in the housing 22 of the VTR jack assembly 20.

  Here, for comparison with the prior art, FIG. 6 shows a cross-sectional view of a VTR jack assembly 30 according to the prior art. Elements similar to those in FIGS. 1 to 5 are denoted by the same reference numerals, and detailed description thereof is omitted. The conventional VTR jack assembly 30 has a casing 32 having the same outer shape as that of FIG. The housing 32 holds an input jack portion 34 including the input terminal portion 14. A signal line 64 led from the other end portion of the output cable 62 having the output terminal portion 16 at the one end connector 60 is connected to the output connector 40, and the output connector 40 is also supported by the housing 32. The input jack portion 34 and the output connector 40 are electrically connected to the circuit board 50 using the connection pins 36 and 42.

  The circuit board 50 is provided with a predetermined wiring pattern, whereby each signal terminal of the input jack portion 34 and each signal terminal of the output connector 40 are associated with each other and connected. The circuit board 50 is also accommodated in the housing 32. However, the housing 32 is the housing 32 of the VTR jack assembly 30.

  Thus, the conventional VTR jack assembly 30 has the circuit board 50 for connection between the input jack portion 34 and the output connector 40, and a soldering process or the like is required. On the other hand, the VTR jack assembly 20 of FIG. 5 does not require a circuit board and does not require a soldering process. In the example of FIG. 6, the casing 32 having the same outer shape as that of FIG. 5 is used. However, as can be seen by comparing FIGS. 5 and 6, the casing 22 of FIG. The size can be further reduced by the amount of space required.

It is a perspective view of the external signal input terminal of the embodiment according to the present invention. It is a three-view figure of the external signal input terminal of embodiment which concerns on this invention. It is sectional drawing of the external signal input terminal of embodiment which concerns on this invention. It is a perspective view of the VTR jack assembly using the external signal input terminal of the embodiment according to the present invention. FIG. 5 is a cross-sectional view of FIG. 4. It is sectional drawing of a conventional type VTR jack assembly.

Explanation of symbols

  6 Input signal cable, 8 External signal line, 10 External signal input terminal, 12 Housing, 14 Input terminal part, 16 Output terminal part, 18 Connection part, 20, 30 VTR jack assembly, 22, 32 Housing, 34 Input jack part 36, 42 Connection pin, 40 output connector, 50 circuit board, 60 connector, 62 output cable, 64 signal lines.

Claims (3)

An input terminal portion having a plurality of input signal terminals that are detachably provided and connectable to each of one end side connectors of a plurality of input signal cables that receive external signals;
An output terminal portion having a plurality of output signal terminals that can be coupled to and detachable from each of the other end side connectors of the plurality of output signal lines;
A connection part for connecting each input signal terminal of the input terminal part and each output signal terminal of the output terminal part by an electrical connection member in a predetermined connection method,
A housing that integrates and connects the input terminal portion, the output terminal portion, and the connection portion;
An external signal input terminal comprising: The external signal input terminal according to claim 1,
Multiple input signal cables
A video signal cable;
Left and right stereo audio signal cables,
External signal input terminal characterized by including. The external signal input terminal according to claim 2,
The plurality of output signal lines include monaural audio signal lines,
The connection unit electrically connects the input signal terminals of the left and right stereo audio signal cables and the output signal terminal of one monaural audio signal line by a predetermined connection method, and connects the stereo audio signal and the monaural signal. An external signal output terminal that switches between the two.

Images