CN86209817U

CN86209817U - Electrothermal blanket with the functions of double timing control and supervoltage protection

Info

Publication number: CN86209817U
Application number: CN 86209817
Authority: CN
Inventors: 姚玉龙; 姚似锦
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-12-03
Filing date: 1986-12-03
Publication date: 1987-12-23

Abstract

The utility model provides an electrothermal blanket with the functions of the timing double-control power supply supervoltage protection. In particular the utility model can control the time of communicating with an alternating current power supply and automatically control the energized moment of high-temperature preheating currents, and the utility model can prevent the high voltage generated in the power supply because of some reasons from entering the electrothermal blanket. Moreover, the connection of conducting wires of the power supply and heating wires use the safety type plug and socket manner. Therefore, the electrothermal blanket with the functions of the timing double-control power supply supervoltage protection is divided into two parts.

Description

Electrothermal blanket with the functions of double timing control and supervoltage protection

The utility model relates to a kind of improved electric blanket, the two control of particularly a kind of timing power supply protection against overpressure device electric blanket, it can be cut off the electricity supply and the automatic high low-temperature current of modulation automatically, and high-voltage discharge tube and safety-type plug is set, multinomial safety device such as socket.

Existing electric blanket does not have timing device, cut off the electricity supply and the high low-temperature current of modulation all must be by manual operation.And feed wire and electric blanket fuse, and, sprain easily thus or joint comes off and causes loose contact because feed wire crooked joint place when often pulling and maintenance are deposited in the joint, produce the situation of harm personal safety such as high heat or sparking, electric shock.In addition, the user is sleeping easily because of obtaining warm comfort, thereby the high temperature preheating electric current in time can not be tuned as low temperature guarantor thermocurrent, the overlong time of high temperature electric current will cause on fire, this situation often has generation, and is very big to security threat, and there is useless electric work consumption etc. in thermostatic electric heating blanket.What sell on the market is the electric blanket of these types.

Task of the present utility model is in order to overcome above-mentioned shortcoming; provide a kind of can realize power supply connect by the time of setting up in advance and cut off automatically on time and the high temperature preheating electric current by the moment of setting up in advance; automatically be tuned as low temperature and protect thermocurrent; and can prevent that high voltage that power supply produces because of certain reason from entering the electric discharge device of electric heating silk rug and the electric blanket that electric heating silk rug and power lead can be connected easily or separated; protection user's safety can allow the user is relieved to sleep soundly.

Task of the present utility model is done in such a manner: the utility model is that two control power supply protection against overpressure devices and electric heating silk rug are arranged regularly, respectively respectively for independently partly forming.Do the insurance of limit current control to exchanging 220 volts of voltage sources, the connection of two set of contact reeds of Power supply timer control power supply and automatically with dump, heating power supply two ends cross-over connection discharge tube, the voltage that prevents superelevation enters the electric heating silk rug, three contact springs of high low temperature timer, control time of high low temperature heating current energising and feed wire attachment security plug etc. and constitute regularly two control power supply protection against overpressure devices partly, safety socket and heating wire constitute the electric heating silk rug partly.

Below with reference to accompanying drawing the utility model is described in further detail.

Accompanying drawing 1 is according to the two control of the timing that the utility model proposes power supply protection against overpressure device circuit figure.

Accompanying drawing 2 is electric heating silk rug figure that the utility model has safety socket.

Describe in detail according to the timing that the utility model proposes two control power supply protection against overpressure device electric blanket circuit and working condition in conjunction with Fig. 1 and 2.

The utility model comprises pin (1) and (29) and the power lead (3) of attaching plug (2); to exchange fuse (5) and (28) of 220 volts of voltage source access devices in protective cover (4), the outflow termination Power supply timer (8) of fuse decide contact spring (6) and (27).Timer (8) heats the time of energising as required to be set up, then moving contact spring (7) and decide contact spring (6) and (26) and (27) homogeneous phase is abutted against and touches logically, and the insulation piece (8a) that links is controlled and is moved contact spring (7) and (26) move together.The positive terminal (10) of the moving diode (12) of contact spring (7) access device in protective cover (9); moving contact spring (26) inserts power end (25); discharge tube (11) is connected across (10) and (25) two ends; when power supply produces high voltage for a certain reason; this pipe discharges immediately with blowout; the high voltage that prevents super supply voltage enters the electric heating silk rug, and the discharge voltage of discharge tube is 1.5 to 2.5 times of supply voltage preferably.The contact spring (18) of deciding of high temperature preheating timer (19) connects (10) end, quiet contact spring (16) connects the negative pole end (13) of diode (12), contact hole (22) and power end (25) that feed wire (20) connects moving contact spring (17) and safety-type dateline (21) are connected contact hole (24), and heating power supply is transported to plug (21) like this.(14) one of the current-limiting resistance of device in protective cover (9) connect (13) end; other end sending and receiving optical diode (15); the other end of light-emitting diode connects power end (25); the bright expression of light-emitting diode (15) power connection, the resistance of current-limiting resistance (14) is according to the performance decision of luminous tube.Timer (8) and (19) are that four reeds two contact group and contact group with three reeds according to needs of the present utility model, for user's needs can be made for Power supply timer (8) separately with the controller of four reeds and three reed controllers are made for temperature adjustment timer (19) separately, also can attach together according to user's needs in a timer, so just constitute regularly two control power supply protection against overpressure devices partly.Safety socket (32) is decided hole (33) seam by seam and is fixed in the top margin angle of electric heating silk rug (35), (36) inserted sheets (31) that insert socket of heating wire, inserted sheet (30) is inserted in the other end, receive thermal sleeve (34) in the cover insulation of joint section, just constitute have socket the electric heating silk rug partly.

Safety plug (21) inserts in the socket (32), and the chieftain in the socket enters in the plug endoporus (23), and inserted sheet (31) and (30) contact with contact hole (22) and (24), the logical electric blanket integral body that is combined into of structure.Set up high low temperature timer (19) according to the time of preheating needs, moving contact spring (17) relies on decides contact spring (18), preheat curent is linked up the heating wire loop by plug and socket, arrived the moment of setting up in advance, automatically will move contact spring (17) with decide contact spring (18) separately And contact with quiet contact spring (16), at this moment the AC power diode (12) of flowing through, interchange becomes half-wave current, and about voltage drop was at half, the electric current that flows through heating wire was the low thermocurrent of insulation.When Power supply timer (8) has arrived the moment of setting up in advance, automatically contact spring (6) and (7) and (27) and (26) are separated, Ac Dump, safe socket (32) and plug (21) are for overcoming the measure device that unsafe factor takes place for above-mentioned power lead and electric blanket joint place.Fuse (5) and (28), timer (8) and (19) discharge tube (11), diode (12), current-limiting resistance (14) should be installed in the protection box, and light-emitting diode assembly and is shaped on display aperture in protection box surface.

Claims

The two control of a kind of timing power supply protection against overpressure device electric blanket includes timing device, limit stream fuse, diode, discharge tube, plug, socket, feed wire, electric heating silk rug etc.; It is characterized in that:

A, two timing controlled contact springs of two control supply units regularly, be device in a timer, also can form by a Power supply timer [8] and a high low temperature timer [19],

The contact spring [6] of b, Power supply timer [8] and [7] and [27] and [26] control are connected and are cut off the electricity supply automatically; Moving contact spring [18] the control preheat curent of high low temperature timer [19], moving contact spring [17] and the quiet reed [16] that connects are connected low-heat insulation electric current,

C, high-voltage discharge tube [11] is set in circuit,

D, safety-type plug [21] and socket [32] are connected the logical electric blanket integral body that becomes of structure with the electric heating silk rug with the two control of timing power supply protection against overpressure devices.