CN2149073Y

CN2149073Y - Antenna-power supply switching device for household videocorder

Info

Publication number: CN2149073Y
Application number: CN 93204134
Authority: CN
Inventors: 陈耀华
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-01
Filing date: 1993-03-01
Publication date: 1993-12-08
Anticipated expiration: 2003-03-01

Abstract

The utility model relates to an antenna-power supply switching device for household video recorders, which is characterized in that the antenna-power supply switching device for household video recorders adopts a connecting element to control synchronously two double-knife double-throw switch, and only one switching action can complete the conversion of two optimal work states that the power supply of a video recorder is cut off, antenna input signals are directly transferred into the antenna socket of a tv set, or the power supply of the video recorder is switched on, the antenna input signals are transferred into the video recorder, and the radio frequency output signals of the video recorder are transferred into the antenna socket of a TV. The utility model has the advantages of low cost, convenient operation and reasonable technology, and can eliminates the unnecessary damage of various connectors because frequent switch.

Description

Antenna-power supply switching device for household videocorder

The utility model relates to a kind of family expenses video tape recorder antenna--power switcher, belongs to the connector class of electricity, circuit.

In the prior art, numerous family expenses video tape recorder users in the connection line of video tape recorder, antenna, television set, when not using video tape recorder mostly with the video tape recorder dump.Because the radio frequency amplifier in the video tape recorder is idle behind dump,, turn back to again on the connection socket for antenna of television set so also need simultaneously antenna is pulled up from video tape recorder.Its shortcoming is: not only bother, and damage connector easily, cause the machine cisco unity malfunction.

The purpose of this utility model is: only finish the conversion that following two kinds of circuits connect at once by one " switch " action: turn-off video tape recorder power supply, antenna input signal and directly deliver to TV set aerial socket user mode or connect the radio frequency output signal that video tape recorder power supply, antenna input signal enter video tape recorder, video tape recorder and deliver to TV set aerial socket user mode.It is family expenses video tape recorder antenna--the power switcher that these two kinds of user modes are best user mode.

Solution of the present utility model is: the antenna lead-in clamp links to each other with the indirect terminal of a double-point double-throw switch respectively with the antenna output wiring terminal, the radio frequency lead-in clamp links to each other with the same side outer terminal of this double-point double-throw switch respectively with the radio frequency output wiring terminal, and the opposite side outer terminal of this double-point double-throw switch links to each other with lead; The power output socket two wires links to each other with the indirect terminal of another double-point double-throw switch, and attaching plug two inlet wires link to each other with the same side outer terminal of another double-point double-throw switch; The handle of a knife of two double-point double-throw switchs connects with connector.

Series connection is connected to resistor and light-emitting diode between supply socket.

Fig. 1 is family expenses video tape recorder antenna--the power switcher circuit connection diagram that the utility model proposes.

Fig. 2 is that the utility model and television set, video tape recorder use connection layout.

Further specify below in conjunction with accompanying drawing:

The handle of a knife of two double-point double-throw switchs is connected by connector (21).When stirring connector (21), the handle of a knife of two double-point double-throw switchs is swung to the same side, family expenses video tape recorder antenna--power switcher circuit connects and is following user mode: the handle of a knife of double-point double-throw switch (9) is swung to binding post (15,16), antenna lead-in clamp (1) is directly connected by lead (24) with antenna output wiring terminal (4), antenna output wiring terminal (4) links to each other with the TV set aerial socket, so antenna input signal is directly delivered to the TV set aerial socket; The handle of a knife of double-point double-throw switch (10) is swung to binding post (25,26) simultaneously, and the video tape recorder power supply connects supply socket (5,6) and is dissengaged positions.When stirring connector (21), when the handle of a knife of two double-point double-throw switchs is swung to opposite side, family expenses video tape recorder antenna--power switcher is following user mode: the handle of a knife of double-point double-throw switch (9) is swung to binding post (13,14), antenna lead-in clamp (1) communicates with radio frequency lead-in clamp (2), and the signal of antenna input enters video tape recorder radio frequency input socket thus; Antenna output wiring terminal (4) communicates with radio frequency output wiring terminal (3), and the radiofrequency signal of being exported by video tape recorder enters the TV set aerial socket thus; The handle of a knife of another double-point double-throw switch (10) is swung to binding post (19,20) simultaneously, supply socket (5,6) two wires is connected with attaching plug two inlet wires (7,8) respectively, because of the video tape recorder power supply connects supply socket (5,6), so the video tape recorder power connection is operating state.In supply socket (5,6), between the series connection be connected to resistor (23) and light-emitting diode (22), can indicate the on-state of video tape recorder power supply.

The utility model compared with prior art has following advantage: adopt two double-point double-throw switch of connector Synchronization Control, only at once finish video tape recorder antenna--the switching of power supply by one " switch " action, cost is low, easy to use, technology is reasonable, and can remove the unnecessary damage that each connector causes because of frequent plug from.

Claims

1, a kind of family expenses video tape recorder antenna--power switcher has shell, antenna lead-in clamp (1), radio frequency lead-in clamp (2), radio frequency output wiring terminal (3), antenna output wiring terminal (4), supply socket (5,6), attaching plug wiring (7,8), double-point double-throw switch (9), double-point double-throw switch (10); It is characterized in that: antenna output wiring terminal (4), antenna lead-in clamp (1) link to each other with the indirect terminal (11,12) of double-point double-throw switch (9) respectively, radio frequency output wiring terminal (3), radio frequency lead-in clamp (2) link to each other with the same side outer terminal (13,14) of double-point double-throw switch (9) respectively, and the opposite side outer terminal of double-point double-throw switch (9) (15,16) connects with lead (24); Supply socket (5,6) links to each other with the indirect terminal (18,17) of double-point double-throw switch (10) respectively, and attaching plug wiring (7,8) links to each other with the same side outer terminal (20,19) of double-point double-throw switch (10) respectively; The handle of a knife of double-point double-throw switch (9) is connected with connector (21) with the handle of a knife of double-point double-throw switch (10).

2, family expenses video tape recorder antenna according to claim 1--power switcher, its feature also is: series connection is connected to resistor (23) and light-emitting diode (22) between supply socket (5,6).