CN2867567Y

CN2867567Y - Full automatic electric cooker temperature limiting central switch

Info

Publication number: CN2867567Y
Application number: CN 200620056023
Authority: CN
Inventors: 颜陶
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-13
Filing date: 2006-03-13
Publication date: 2007-02-07
Anticipated expiration: 2016-03-13

Abstract

The utility model provides with a full automatic temperature limiting central switch for electric rice cooker and pertains to the temperature control switch technique field. The switch includes a shell, an offsetting spring fixed on the inner wall of the shell, a temperature sensor held by the offsetting spring in the cavity of the shell, a temperature sensitive magnet fixed on the inner top of the temperature sensor, a cubicle switch fixed on the bottom of the temperature sensor, permanent magnet mounted between the temperature sensitive magnet and the cubicle switch, an inner spring positioned around the temperature sensitive magnet and the permanent magnet. An upper tactile rod with influence on switch state is arranged on the upper part of the cubicle switch and is opposite the bottom of the permanent magnet; a lower tactile rod with influence on switch state is arranged on the lower part of the cubicle switch and is opposite the inner bottom of the shell. The cubicle switch is also provided with the power supply terminal on the current input end, the heating terminal extracting switching signal and the heat insulation terminal. The switch of the utility model has advantages of simple installation technique, convenient usage, security and reliability for electric rice cooker.

Description

Electric cooker full-automatic temperature limiting center switch

Technical field

The utility model relates to a kind of temp control switch, refers in particular to a kind of electric cooker full-automatic temperature limiting center switch that is used for electric cooker.

Background technology

The existing employed temperature limit switch of electric cooker, be by manually lever being pressed energized, begin to cook, the ripe back of meal temperature limit switch switches to keeping warm mode with circuit by heated condition through lever bindiny mechanism, because bindiny mechanism's link is too much, and each part dimension deviation accumulation, packaging technology mismate in addition, or factor such as user misoperation, make electric cooker normal appearance in the actual use of user give birth to phenomenons such as rice, half-cooked rice, burnt meal, even burn out the tragedy that heating board causes fire.

Summary of the invention

The purpose of this utility model aims to provide a kind of simple for assembly process, easy to use, safe and reliable a kind of electric cooker full-automatic temperature limiting center switch.

The purpose of this utility model is achieved in that a kind of electric cooker full-automatic temperature limiting center switch, comprise shell, be fixed on the back-moving spring on the outer casing inner wall, the spring that is reset is lifted the temperature detector in chamber in the enclosure, wherein: described temperature detector inner top is fixed with temperature sensitive magnet, be fixed with unit switch in the temperature detector bottom, between temperature sensitive magnet and unit switch, be provided with permanent magnet, be provided with inner spring in the periphery of temperature sensitive magnet and permanent magnet; It is relative with the permanent magnet bottom that described unit switch top is provided with the last feeler lever that can influence on off state, it is relative with the inner bottom part of shell that the bottom of unit switch is provided with the following feeler lever that can influence on off state, and unit switch also is provided with the power supply terminal of current input terminal, the heating terminal of drawing switching signal and insulation terminal.

Permanent magnet described in the above-mentioned electric cooker full-automatic temperature limiting center switch can be fixed on the pallet, and inner spring is fixed between the inner top of pallet and temperature detector.

After the utility model adopts said structure, make power switch signal to transmit via lever bindiny mechanism, avoided component processing scale error accumulation because of bindiny mechanism, mounting process mismate or misoperation of users produce gives birth to bad phenomenon such as rice, burnt meal, half-cooked, dry combustion method, and can simplify the packaging technology of electric cooker; Compared with prior art, have advantage easy to use, safe and reliable, because of reducing lever bindiny mechanism, also can reduce production costs simultaneously.

Description of drawings

Below in conjunction with the embodiment in the accompanying drawing the utility model is described in further detail, but does not constitute any restriction of the present utility model.

Fig. 1 is the structural representation of a kind of specific embodiment of the utility model;

Fig. 2 is the utility model working state schematic representation;

Fig. 3 is the utility model keeping warm mode schematic diagram.

Among the figure: feeler lever, 43-power supply terminal, 44-heating terminal, 45-are incubated terminal under 1-shell, 2-back-moving spring, 3-temperature detector, the temperature sensitive magnet of 31-, 32-permanent magnet, 33-inner spring, 34-pallet, 4-unit switch, the last feeler lever of 41-, the 42-.

Embodiment

Consult shown in Figure 1, electric cooker full-automatic temperature limiting center switch of the present utility model, comprise shell 1, be fixed on the back-moving spring 2 on shell 1 inwall, the spring 2 that is reset is lifted at shell 1 inner chamber and can be gone up, mobile down temperature detector 3, be fixed with temperature sensitive magnet 31 at temperature detector 3 inner tops, temperature detector 3 bottoms be fixed with can with on, mobile down unit switch 4, between temperature sensitive magnet 31 and unit switch 4, be provided with permanent magnet 32, periphery at temperature sensitive magnet 31 and permanent magnet 32 is provided with inner spring 33, permanent magnet 32 is fixed on the pallet 34, inner spring 33 is fixed between the inner top of pallet 34 and temperature detector 3, makes permanent magnet 32 change adhesive or to break away from temperature sensitive magnet 31 because of temperature sensitive magnet 31 magnetism intensities; Unit switch 4 tops be provided with can influence on off state on feeler lever 41 relative with permanent magnet 32 bottoms, it is relative with the inner bottom part of shell 1 that the bottom of unit switch 4 is provided with the following feeler lever 42 that can influence on off state, be provided with the power supply terminal 43 of current input terminal in following feeler lever 42 sides of unit switch 4, be provided with the heating terminal 44 and the insulation terminal 45 of drawing switching signal in the side of unit switch 4.

Operation principle of the present utility model sees also Fig. 1, Fig. 2, shown in Figure 3, in Fig. 1, show, when electric cooker is put into empty pot or during with the pot taking-up, because of the pot compression reseting spring 2 or in not having of pot shortage in weight in empty with compression reseting spring 2, temperature detector 3 drive unit switches 4 move up under the effect of back-moving spring 2, the bottom surface that following feeler lever 42 breaks away from shell 1 inner chamber is vacant, and electric current flows into from insulation terminal 45 through power supply terminal 43 and flows out, and the electric cooker circuit is switched to keeping warm mode.

In Fig. 2, show, when electric cooker is put into real pot, oppressing temperature detector 3 because of the action of gravity of pot in real moves down with the unit switch 4 that is fixed on temperature detector 3 bottoms, the following feeler lever 42 of unit switch 4 is touched by the bottom surface of shell 1 inner chamber, electric current flows into from heating terminal 44 through power supply terminal 43 and flows out, the electric cooker circuit enters heated condition, and this moment, back-moving spring 2 was compressive state.

In Fig. 3, show, owing to losing magnetic conductivity, temperature sensitive magnet 31 make the temperature sensitive magnet 31 that always is pulled together under the elastic force effect of inner spring 33, separate reach temperature when cooking after with permanent magnet 32, permanent magnet 32 moves down the last feeler lever 41 that touches unit switch 4, cause electric current to switch to insulation terminal 45 by heating terminal 44 and flow out, the electric cooker circuit switches to keeping warm mode by heated condition; Pot in interior pot bottom temperature descends or takes out, temperature detector 3 temperature will descend thereupon, when reaching reset temperature, temperature sensitive magnet 31 recovers magnetic conductivity, the suction-combining force of permanent magnet 32 and temperature sensitive magnet 31 is during greater than inner spring 33 elastic force and permanent magnet 32 own wts, both again adhesive reset, the last feeler lever of unit switch 4 41 disengages with permanent magnet 32 and resets, the electric cooker circuit returns to initial condition.

Claims

1. electric cooker full-automatic temperature limiting center switch, comprise shell (1), be fixed on back-moving spring (2), the spring that is reset (2) on shell (1) inwall and lift temperature detector (3) at shell (1) inner chamber, it is characterized in that: described temperature detector (3) inner top is fixed with temperature sensitive magnet (31), be fixed with unit switch (4) in temperature detector (3) bottom, between temperature sensitive magnet (31) and unit switch (4), be provided with permanent magnet (32), be provided with inner spring (33) in the periphery of temperature sensitive magnet (31) and permanent magnet (32); Described unit switch (4) top is provided with that to influence the last feeler lever of on off state (41) and permanent magnet (32) bottom relative, the bottom of unit switch (4) is provided with that to influence the following feeler lever of on off state (42) relative with the inner bottom part of shell (1), and unit switch (4) also is provided with the power supply terminal (43) of current input terminal, the heating terminal (44) of drawing switching signal and insulation terminal (45).

2. electric cooker full-automatic temperature limiting center switch according to claim 1 is characterized in that: described permanent magnet (32) is fixed on the pallet (34), and inner spring (33) is fixed between the inner top of pallet (34) and temperature detector (3).