CN2289314Y

CN2289314Y - Plucking-free socket for TV set

Info

Publication number: CN2289314Y
Application number: CN 96221373
Authority: CN
Inventors: 杨成建
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-08-24
Filing date: 1996-08-24
Publication date: 1998-08-26
Anticipated expiration: 2006-08-24

Abstract

The utility model discloses a plucking-free socket for a TV. A small motor is used for driving a slide plate which is provided with a movable contact to move through a deceleration system and screw drive transmission. Moreover, the motion of the slide plate can drive the movable contact and a fixed contact to close or separate. Therefore, the switching of a power supply and signals is realized. The rotation of the small motor is controlled by a controlling circuit. The moving distance of the slide plate is controlled by a travel switch. When a user switches on the TV, the power supply and a signal source can be switched on by pushing a button of a socket panel. When the user switches off the TV, the plucking-free socket for the TV can automatically switch off the power supply and the signal source. The utility model not only relieves the vexation of plucking and pulling plugs, but also provides a definite protecting function to the TV.

Description

TV exempts to dial socket

The utility model relates to a kind of TV exempts to dial socket, belongs to and the matching used a kind of control device of television set.

As everyone knows; at present; TV user is after finishing watching the TV programme shutdown; all be TV set power plug and TV signal plug to be transferred to from corresponding socket with method manually; seem very loaded down with trivial details; sometimes; because people's inertia or other reasons; usually can cause attaching plug and Signal plug all not to have from corresponding socket, to transfer to; thereby, television set stayed hidden danger for causing the accident; especially summer thunderstorm season or frequent the power failure, or under the abnormal conditions such as the acute width of cloth lifting of line voltage, just cause the consequence of damaging television set probably.In fact, the thing that causes television set to damage because of thunderbolt happens occasionally, and still, TV set power socket that generally uses and signal plug structurally do not possess the function that makes television set that prevention effect be arranged thunderbolt etc. at present.

The purpose of this utility model is to propose a kind of TV to exempt to dial socket, and it can cut off power supply and signal source after the television set shutdown automatically, the worry of removing the allocation socket from, and to thunderbolt, abnormal conditions such as voltage ripple of power network have prevention effect simultaneously.Make television set safer.

The purpose of this utility model realizes by following scheme.

TV exempts to dial socket, it mainly by plastic bottom board, miniature transformer, small DC motor, gear reduction unit, threaded rod, nut, slide plate, runner block, chute, moving contact reed, moving contact, decide contact, decide contact plate, battery case, wiring board etc. form, small DC motor is by being bolted on the decelerator cover plate, the decelerator base is fixed on the runner block by screw, and runner block is fixed on the plastic bottom board by screw.The nut supporting with threaded rod is fixed on the slide plate by stove bolt, and threaded rod one end is fixed on the threaded rod holder, and the other end links to each other with decelerator, as the power output shaft of decelerator.The slide plate right part is fixed with four moving contacts by reed, wherein two connections that are used for power supply, two connections that are used for signal in addition.First directly links to each other with an electrode of supply socket to be used for two movable contacts that power supply is communicated with, another then links to each other with another electrode of supply socket by small transformers is elementary, and two moving contacts that are used for signal communication link to each other with signal plug by impedance transformer.Decide contact deciding to be fixed with on the contact plate corresponding with moving contact four, wherein two are connected with electric power incoming line, and two link to each other with the signal inlet wire by impedance transformer in addition.Decide contact plate and moving contact plate is all made by copper clad plate.Decide contact plate and be to be inserted in the groove that two self-tapping screw seats constitute and fixing, battery case, small transformers and wiring board all are fixed on the plastic bottom board with self-tapping screw.

Small DC motor is that the rechargeable battery that is mounted in the battery case provides power supply, and its rotation is controlled by the control circuit on the wiring board.When TV usefulness needs to open television set, as long as touch the push-button switch that is installed on the plastic casing panel gently, control circuit will provide a signal that small machine is rotated, thereby small machine is rotated, rotate by driving threaded rod behind the double reduction of gear, and threaded rod drives the slide plate moving linearly by nut, make, decide the contact contact, connect TV set power and signal source, simultaneously, slide plate can touch travel switch.Make the small machine stall, at this moment, the user can open the tall reward TV programme of television set.During shutdown, the small transformers that is in series with the TV set power loop is elementary will to lose voltage, the secondary voltage that also and then loses.At this moment, control circuit will be handled this voltage jump, provides a signal that makes the small machine counter-rotating; small machine is backward rotation just, drives slide plate and moves, and makes and decides contact separately; cut off TV set power and signal source, thereby television set is played the certain protection effect.

Exempt to dial socket according to the TV that the utility model proposed, also have following technical characterictic:

TV is exempted to dial the slide plate of socket and decided contact plate is to make with copper clad plate, in light weight.

The deceleration gear that TV is exempted from group socket is made of plastic, and reduction box, runner block are also made of plastic.

TV is exempted to dial socket and is provided with the device that battery is charged automatically.

The small transformers that TV exempts to dial socket is a special transformer, its elementary impact that can bear big electric current, and during television set work, primary voltage is very low, and 2--3 volt does not only influence the operating voltage of television set.

TV exempt to dial socket moving, decide contact under released state apart from designing very greatly, make television set safer.

The slide plate two ends that TV is exempted from group socket are provided with travel switch.

The power supply of TV insertion free seat and signal source are to control by the break-make of contact.

Mechanical part of the present utility model and electrical appliance part all are installed in the plastic casing that is made of plastic bottom board and plastic casing.Push-button switch and power supply indicator are installed on the plastic casing panel.

Fig. 1 is a structure chart of the present utility model.

Fig. 2 is the A-A cutaway view in the utility model structure chart.

Fig. 3 is the johning knot composition of the utility model structure chart middle slide plate and moving contact reed.

Fig. 4 is a circuit controling drawing of the present utility model.

The utility model will be further described below in conjunction with accompanying drawing

With reference to accompanying drawing: the utility model is mainly by plastic bottom board 1, small transformers 6, small DC motor 8, the deceleration system that decelerator cover plate 9 and base 11 and plastic gear 10 constitute, threaded rod 14, slide plate 20, runner block 13, power supply,

signal moving contact

19,26, power supply, signal are decided

contact

25,29, are decided contact 23, decide contact reed 30, left and right

sides travel switch

12,17 compositions such as grade, small DC motor 8 is fixed on the decelerator cover plate 9 by screw, and decelerator cover plate 9 is connected with decelerator base 11 usefulness screws.Runner block 13 usefulness screws are fixed on the plastic bottom board 1, constitute twice chute 16 between the two, slide therein for slide plate 10, and runner block 13 1 ends have screw, for decelerator base 11 fixing using.Nut 15 is enclosed within threaded rod 14 outsides, in order to realize worm drive, the rotation of threaded rod 14 is become the left and right sides rectilinear motion of slide plate 20.Be installed in two power supply moving contacts 19 on the slide plate 20 and two signal moving contacts 26 also just with slide plate 20 move left and right, thereby realize and decide contacting and disconnection of

contact

25,29, reach the purpose that makes power supply and signal source break-make, decide to be equipped with on the contact plate 23 that power supply is decided contact 25 and signal is decided contact 29, be connected with electric power incoming line and signal inlet wire respectively, decide contact plate 23 and be to be inserted in the groove that constitutes by two self-tapping screw seats 21 and fixing.1 also has power supply, signal incoming

line

24,28 on the plastic casing.

At ordinary times, TV set power plug and Signal plug be to be inserted in respectively in supply socket 5 of the present utility model and the signal plug 2, need not transfer to.

Circuit control principle of the present utility model is as follows:

As accompanying drawing 4, before the start, click button AN, controllable silicon SCR 2 conductings, battery E is by SCR2, normally closed interlock J22, small DC motor D, normally closed interlock J12, right lateral journey K switch 2 is rotated small machine, passes through decelerator, worm drive move to right slide plate 20, move, decide the contact contact, and power supply and signal source are connected, power supply indicator XD is bright, and simultaneously, slide plate 20 touches right lateral journey switch 17 (being K2), make the small machine stall, at this moment, can open television set and watch program.The television set duration of work, B level of transformer has voltage output, after rectification, filtering, voltage stabilizing.On the one hand by R4 and D3 for battery E charging, make BGI degree of depth saturation conduction on the other hand, so the BG2 base potential is very low, BG2 ends, the while, C3 also charged.During shutdown, BG1 withdraws from saturated and ends, BG2 rely on fill on the C3 voltage and conducting, and trigger controllable silicon SCR 1, and making the SCR1 conducting, relay J gets, J11, J21 adhesive, small machine counter-rotating, slide plate 20 is pulled to left end, thereby cuts off the electricity supply and signal source, indicator light XD also extinguishes thereupon, when moving to left lateral, slide plate removes when closing 12 (being K1), the J dead electricity, the motor stall, the course of work is finished.

Claims

1, a kind of TV exempts to dial socket, it is characterized in that: it is by small machine (8), decelerator cover plate (9), plastic gear (10), decelerator base (11), threaded rod (14), nut (15), slide plate (20), runner block (13), decide contact plate (23), moving contact (19,26), moving contact reed (30), decide contact (25,29), transformer (6), battery case (4), wiring board (7) and plastic bottom board compositions such as (1), small machine (8) is connected with screw with decelerator cover plate (9), decelerator cover plate (9) also is connected with screw with base (11), decelerator base (11) is fixed on the runner block (13) by screw, runner block (13) is connected with screw with plastic bottom board, nut (15) is enclosed within threaded rod (14) and goes up to realize worm drive, slide plate (20) is connected with screw with nut (15), also be connected with two travel switches (12 on the plastic bottom board (1) with screw, 17), wiring board (7), battery case (4) and transformer (6) all are fixed on the plastic bottom board (1) with screw, one end of plastic bottom board (1) also is equipped with supply socket (5) and signal plug (2), (3) be impedance transformer with (27), when mechanical driving part adopts worm gear reducer mechanism, this mechanism is then by small machine (8), worm screw (31), worm gear (32), worm-wheel shaft (33), pinion (34), gear wheel (35), Large Gear Shaft During (36), tooth bar (37) and slide plate compositions such as (20), worm screw (31) is enclosed within on the power output shaft of small machine (8) and with worm gear (32) and meshes, the above the average age for marriage wheel (35) is fixed on Large Gear Shaft During (36) and upward and with tooth bar (37) meshes, and tooth bar (37) is screwed on slide plate (20), by small machine (8), worm screw (31), worm gear (32), the big pinion (35 of worm-wheel shaft (33), 34) the common reducing gear that constitutes is fixed in the plastic casing, and links to each other with plastic bottom board (1).

2, exempt to dial socket according to the described TV of claim 1, it is characterized in that slide plate (20) and deciding contact plate (23) is to make with copper clad plate.

3, exempt to dial socket according to the described TV of claim 1, it is characterized in that with small DC motor, worm drive or by worm gear reducer, the tooth bar transmission drives slide plate (20) and moves, the break-make of realization power supply and signal by gear reduction.

4, exempt to dial socket according to the described TV of claim 1, it is characterized in that limiting the distance that slide plate (20) moves with two travel switches (12,17).