JPS6329338Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of an antenna signal switching device.

BACKGROUND ART Television receivers (hereinafter abbreviated as TVs) have become rapidly popular in recent years, and more and more households are installing multiple TVs. In addition, video tape recorders (hereinafter abbreviated as VTR) have become easier to carry due to miniaturization, so multiple units can be used together.
It is increasingly being shared on TV. here
When using a VTR, the antenna signal is first connected to the VTR.
The antenna signal and the video signal are switched by operating a switch on the VTR.
Therefore, when using a VTR, it is necessary to first change the connection of the cable from this antenna from the TV to the VTR, and then connect the VTR and TV again, which is a relatively troublesome process. Ta.

This invention was made with this in mind. By inserting an antenna switch in the cable from the antenna to the TV, the antenna signal is normally directly
This antenna switch is connected to a TV, and when a VTR is in use, the antenna switch is fitted into the input and output connectors of the VTR so that it is connected to the TV via the VTR, thereby eliminating the above-mentioned drawbacks.The gist of this device is that it is an antenna signal switch comprising a first connector for connecting a cable from an antenna, a second connector for connecting a cable to the TV, third and fourth connectors used for connecting to a VTR, an interlocking rod that is slidably built into either or both of the third and fourth connectors and moves when it comes into contact with the VTR connector when the VTR is connected, and a switch that operates in response to the movement of the interlocking rod to perform the switching operation as described above.

Embodiments will be described in detail below with reference to drawings showing embodiments.

Fig. 1 is a perspective view showing one embodiment of the present invention;
3 and 3 are sectional views showing the main parts thereof, and FIG. 4 is a connection circuit diagram thereof. In the figure, 1 is the antenna signal switching device of the present invention. 2 is the first plug, 3
are the second plugs, and these use male F-type coaxial connectors. A cable 4 from an antenna is connected to the first plug 2, and a cable 5 to the TV is connected to the second plug 3. Also 6
7 is a third connector, and 7 is a fourth connector, and female F-type coaxial connectors are used for these connectors. The third and fourth connectors are arranged at a predetermined interval so as to fit with the input/output connector of the VTR 8.

These third and fourth plugs each have an interlocking rod inside. The part indicated by 9 in FIGS. 2 and 3 is this interlocking rod, and the center conductor 1 of the plug
0 and the outer conductor 11 in a slidable manner. That is, the upper end surface of the interlocking rod 9 is exposed inside the female F-type coaxial connector, and when a male F-type coaxial connector is fitted therein, the interlocking rod 9 moves under the pressure of the male F-type coaxial connector. FIG. 2 shows the position of the interlocking rod 9 in a steady state, and FIG. 3 shows the position of the interlocking rod 9 in a fitted state. Reference numerals 12 and 13 are non-lock type changeover switches, and 14 is an operating lever thereof. This operating lever 1
4 is in constant contact with the lower end of the interlocking rod 9,
The switches 12 and 13 are switched in response to the movement of the interlocking rod 9, and the interlocking rod 9 is always urged upward by the spring pressure of the switches 12 and 13.

In the switches 12 and 13, the common contact S is in contact with the individual contact A in the steady state, and is in contact with the individual contact B in the operating state. In these switches 12 and 13, their individual contacts A are connected to each other, their common contact S is connected to the center conductor of the first or second plug 2 or 3, respectively, and their individual contact B is connected to the center conductor of the third or fourth plug, respectively. It is connected to the center conductor of the connector 6 or 7.

Next, the operation of the antenna signal switch configured as described above will be explained.

First, when VTR 8 is not used, no pressure is applied to the top surface of interlocking rod 9, so switch 1 is
2 and 13 are in a steady state with the operating rod 14 not moving, so the antenna signal from the cable 4 is directly transferred to the TV via the cable 5.

Next, when using the VTR 8, input and output connectors of the VTR 8 are fitted into the third and fourth connectors 6 and 7. Therefore, due to the pressure, the interlocking rod 9
The upper end surface is pushed down, and the operating rods 14 of the switches 12 and 13 that are in contact with the lower end of the interlocking rod 9 are also pressed down. By moving the operating rod 14, the switches 12 and 13 are activated, and the cable 4 is connected to the input side of the VTR 8 through the switch 12, and the cable 5 is connected to the output side of the VTR 8 through the switch 13. connected to. This allows VTR
It is possible to switch between the video signal and the antenna signal by operating the 8 side.

Although the embodiments illustrated above have been described, it goes without saying that the present invention is not limited thereto. For example, the first and second plugs do not necessarily have to be in the form of removable connectors; various variations such as screwing are possible; in extreme cases, they may be fixed by soldering, etc. You can. Also, the third and fourth connectors are not limited to female shapes as long as the interlocking rods are slidably attached, and the sliding direction of the interlocking rods is also limited to the insertion and removal direction of the connectors. It's not a thing.

Furthermore, the antenna signal switching device of the present invention not only directly controls the operating lever of the switch using an interlocking lever, but also uses an appropriate lever to adjust its moving direction, amount of movement, operating pressure, etc. using the lever principle. You can also. FIG. 5 shows an example of this, in which the downward movement of the interlocking rod 9 is converted into a horizontal movement by a swingably supported lever 15, and the operating rod 17 of the switch 16 is operated. It is. With this configuration, the location of the switch 16 can be arbitrarily selected, which is effective in downsizing the device.

As explained in detail above, according to the antenna signal switching device of the present invention, just by fitting the plug to the VTR, the circuit will automatically switch to the VTR side, and if it is removed, the antenna signal will be sent directly to the TV. This eliminates the troublesome task of changing antenna cable connections when moving a VCR for use. Furthermore, since the interlocking rod of the present invention is built into the plug, switching operations can be performed reliably regardless of the shape of the VTR's outer box.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the external appearance of one embodiment of the present invention, Figs. 2 and 3 are partial sectional views showing its main parts, Fig. 4 is a connection circuit diagram thereof, and Fig. 5 is a diagram showing other parts. FIG. 2 is a sectional view showing the main parts of the embodiment. 1... Antenna signal switcher, 2... First connector, 3... Second connector, 4, 5... Cable, 6
...Third connector, 7...Fourth connector, 8...
VTR, 6... Interlocking rod, 10... Center conductor, 11
...Outer conductor, 12, 13, 16...Switch,
14, 17... operating rod, 15... lever.

Claims (1)

[Scope of utility model registration request] In an antenna signal switch that switches between connecting the signal from the antenna directly to the television receiver or connecting it via the video tape recorder, the first connection to which the cable from the antenna is connected. a second plug to which a cable to a television receiver is connected; third and fourth plugs used for connection to a video tape recorder; an interlocking rod that is slidably built into at least one side of the connector and moves upon contact with the mating plug during connection, and operates in response to the movement of this interlocking rod to perform the above-mentioned switching operation. An antenna signal switching device comprising a switch.