CN219106010U - Temperature-sensitive switch for preventing electric appliance from dry burning - Google Patents

Abstract

The utility model discloses a temperature-sensitive switch for preventing electric appliance from dry heating, which belongs to the temperature-sensitive switch technology and comprises a base, wherein a box body is fixedly arranged at the top of the base, limit mechanisms are arranged on the front and the back of the upper end of the box body, a top cover is arranged at the top of the box body, wiring terminals are fixedly arranged at two sides of the bottom of the top cover, two ends of each wiring terminal penetrate through the box body, and the top cover is arranged at the top of a shell through the limit mechanisms; the elasticity of the bimetal spring plate can be timely adjusted by adjusting the up-and-down movement of the touch rod, the sensitivity of the bimetal spring plate can be adjusted when the touch rod moves downwards, the bimetal spring plate is more sensitive, the sensitivity of the bimetal spring plate is reduced when the touch rod is adjusted to move upwards, the sensitivity of the temperature-sensitive switch is adjustable during use, the temperature-sensitive switch is convenient to use, and the temperature-sensitive switch is matched with a pointer and a round scale on a knob, can be observed as required, and is convenient to use.

Description

Temperature-sensitive switch for preventing electric appliance from dry burning

Technical Field

The utility model relates to the technical field of temperature-sensitive switches, in particular to a temperature-sensitive switch for preventing electric appliances from being burned dry.

Background

The temperature switch is a temperature switch using bimetallic strip as temperature sensing element, when the electric appliance works normally, the bimetallic strip is in free state, the contact is in on/off state, when the temperature rises to the action temperature value, the bimetallic element is heated to generate internal stress to act rapidly, the contact is opened/closed, and the circuit is cut off/on, thereby playing the role of thermal protection. When the temperature is reduced to the re-temperature, the contact is automatically closed/opened, and the normal working state is restored. The motor is widely used for household appliance motors and electrical equipment, such as washing machine motors, air conditioning fan motors, transformers, ballasts, electric heating appliances and the like;

with the improvement of the living standard of people, household appliances are more and more, the common use of the appliances brings great convenience to the life of people, but if a user lacks the consciousness of electricity utilization safety prevention, the household appliances bring potential safety hazard to the user, so that safety accidents are caused. For electric heating equipment such as electric rice cooker, electric kettle, electric water heater, etc., the electric heating device such as heating plate, heating sheet, etc. is usually contained in the electric heating equipment, if the electric heating device is operated in abnormal working state such as anhydrous heating, overheat, etc., the product is easily damaged due to dry heating, even fire disaster occurs. Therefore, for the electric heating equipment, a temperature controller is generally required to be arranged to ensure the electric safety. When the working temperature of the electric heating device is higher than the preset temperature, the temperature controller can automatically cut off the circuit to prevent dry burning. The temperature controller can prevent dry combustion method condition emergence to a certain extent, however, current temperature controller is because bimetallic strip is in the inside of equipment, leads to its action response insensitive, unable quick disconnection circuit in time, and during the concrete use, can't adjust its sensitivity for bimetallic strip, can't adjust its sensitivity according to the demand of different equipment, the too high condition that then can lead to equipment to appear frequent outage influences work efficiency, the too low situation that then can lead to equipment to appear long-time dry combustion method of sensitivity, can accelerate the ageing of electrothermal equipment equally, cause the potential safety hazard, consequently, need improve current temperature-sensitive switch.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems existing in the prior art, the utility model aims to provide a temperature-sensitive switch for preventing electric appliance from dry heating, the scheme is characterized in that an adjusting mechanism is arranged to be matched with a touch mechanism, so that during the use period, a metal heat conducting block at the bottom of a bimetal elastic sheet on the touch mechanism penetrates through empty slot contact equipment, when the equipment is overheated, heat can be directly transferred to the bimetal elastic sheet, the bimetal elastic sheet is heated to enable deformation of the bimetal elastic sheet to be sprung upwards, thereby assisting in driving a stand column to move upwards, an electric conduction copper plate can be lifted upwards through upward movement of the stand column, the electric conduction copper plate is separated from a wiring terminal, at the moment, a power supply can be disconnected, when the temperature is reduced, during the use period, when the sensitivity of the bimetal elastic sheet needs to be adjusted, a screw rod is driven to downwards to drive the touch rod through a torsion knob, the touch rod is limited by a hexagonal slot, so that the touch rod can not rotate, and can be pressed downwards, thereby the bimetal elastic sheet can be pressed against the bimetal elastic sheet, the bimetal elastic sheet can be timely adjusted, when the touch rod moves downwards, the bimetal elastic sheet can be adjusted, the sensitivity of the switch can be adjusted, and the temperature-sensitive scale can be more conveniently adjusted, and the temperature-sensitive scale can be used when the temperature-sensitive scale is adjusted.

2. Technical proposal

In order to solve the problems, the utility model adopts the following technical scheme.

The utility model provides an electric appliance prevents temperature-sensitive switch of dry combustion method, includes the base, the top fixed mounting of base has the box body, the upper end front and the back of box body all are equipped with stop gear, the box body top is equipped with the top cap, the bottom both sides of top cap all fixed mounting have binding post, the box body is run through at binding post's both ends, the top cap passes through stop gear and installs in the top of casing, the bottom fixed mounting of top cap has the inner frame, fixed mounting has the crossbearer in the middle of the inner frame, the through-hole has all been seted up at the both ends of crossbearer, lower extreme sliding connection has touch mechanism in the crossbearer, the through-hole box wiring terminal fixed mounting on the crossbearer has electrically conductive copper, the bottom of electrically conductive copper and binding post's inner laminating are connected, the centre of top cap is equipped with adjustment mechanism, the air-out has been seted up to the bottom of base.

Further, grooves are formed in the upper ends of two sides of the box body, and the outer ends of the wiring terminals penetrate through the box body.

Furthermore, the bottom of the outer end of the wiring terminal is fixedly provided with a wiring block, and the side surface of the wiring block is I-shaped.

Further, the touch mechanism comprises a bimetal elastic sheet, metal heat conducting blocks are fixedly arranged on two sides of the bottom of the bimetal elastic sheet, upright posts are fixedly arranged on two sides of the top of the bimetal elastic sheet, the upper ends of the upright posts penetrate through the through holes and are fixedly connected with two sides of the bottom of the conductive copper plate, the upright posts are slidably connected to the inner sides of the through holes, the middle of the top of the bimetal elastic sheet is in fit connection with the bottom of the adjusting mechanism, and the bottoms of the metal heat conducting blocks penetrate through empty grooves.

Further, stop gear includes fixed block and sleeve, equidistant fixed mounting of fixed block is in the bottom front and back both ends of top cap, the spacing hole has been seted up in the middle of the outside of fixed block, telescopic inboard fixed mounting has spacing spring, spacing spring's inner fixed mounting has the spacer pin, the inner of spacer pin runs through the box body and pegs graft in the inboard of fixed block.

Further, the connecting shaft is fixedly arranged at the outer end of the limiting pin, the pulling plate is fixedly arranged at the outer end of the connecting shaft through the sleeve and the limiting spring, and the pulling plate is connected with the connecting shafts in the three groups of sleeves.

Further, the both sides of base are all fixed mounting has the installation piece, the mounting hole has been seted up in the middle of the top of installation piece and the mounting hole runs through the installation piece.

Further, the adjusting mechanism comprises a screw rod and a hexagonal groove, the screw rod is rotationally connected to the bottom of the top cover, a knob is fixedly installed at the upper end of the screw rod in a penetrating mode through the top cover, the hexagonal groove is formed in the middle of the transverse frame, a touch rod is connected to the outer surface of the screw rod in a threaded mode, the bottom of the touch rod is connected with the top of the bimetal elastic sheet in a fitting mode, the touch rod is connected to the inner side of the hexagonal groove in a sliding mode, and the overlooking mode of the touch rod is also set to be regular hexagon.

Further, the top of knob fixed mounting has the pointer, the top of top cap is located the outside of knob and is equipped with circular scale.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages that:

(1) According to the scheme, the adjusting mechanism is matched with the touch mechanism, so that during the use period, the metal heat conducting block at the bottom of the bimetal elastic piece on the touch mechanism penetrates through the empty slot contact equipment, when overheat occurs in the equipment, heat can be directly transferred to the bimetal elastic piece, the bimetal elastic piece is heated to enable deformation of the bimetal elastic piece to be upwards sprung, thereby assisting in driving the upright post to move upwards, the conductive copper plate can be upwards jacked through the upward movement of the upright post, the conductive copper plate and the wiring terminal are separated, at the moment, a power supply can be disconnected, when the temperature is reduced, during the use period, the screw is driven to downwards drive the touch rod through the twisting knob, the touch rod is limited by the hexagonal slot, so that the touch rod can not rotate, and can be pressed against the bimetal elastic piece, deformation can be caused by adjusting the upward movement of the touch rod, the elasticity of the bimetal elastic piece can be timely adjusted, the sensitivity of the bimetal elastic piece can be adjusted when the touch rod moves downwards, the touch rod is more sensitive, the touch rod is separated from the conductive copper plate, the touch rod is convenient to use, the touch rod is convenient to observe, and the touch rod is provided with a round touch scale, and the touch scale.

(2) Through setting up stop gear for when using, accessible spacing spring contradicts the spacer pin and peg graft to spacing hole inboard can assist in installing the top cap, when needing dismouting to overhaul this temperature sensor, through pulling the arm-tie, the arm-tie drives three group's of box body both sides even the axle and draws together the spacer pin in step, make the spacer pin leave spacing hole shrink to telescopic inside, alright take off or install the top cap on the box body this moment, thereby make this temperature-sensitive switch dismouting comparatively convenient and fast, be convenient for it overhauls, during the use, through setting up the junction block on the binding post, can be convenient for assist the connecting wire, the mounting hole on the cooperation mounting plate, make this temperature-sensitive switch integral erection comparatively convenient, the practicality is stronger, application prospect is comparatively extensive.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an exploded view of the present utility model;

FIG. 3 is a side exploded view of the present utility model;

FIG. 4 is a bottom exploded view of the present utility model;

FIG. 5 is a top view of the present utility model;

FIG. 6 is a block diagram of a spacing mechanism of the present utility model;

fig. 7 is a side view of the spacing mechanism of the present utility model.

The reference numerals in the figures illustrate:

1. a base; 2. a case body; 3. a limiting mechanism; 31. a fixed block; 32. a sleeve; 33. a limiting hole; 34. a limit spring; 35. pulling a plate; 36. a limiting pin; 37. a connecting shaft; 4. a connection terminal; 5. a top cover; 6. an adjusting mechanism; 61. a screw; 62. a hexagonal groove; 63. a knob; 64. a touch lever; 65. a pointer; 66. a circular scale; 7. a cross frame; 8. a through hole; 9. a touch mechanism; 91. a bimetal spring plate; 92. a metal heat conducting block; 93. a column; 10. an inner frame; 11. a conductive copper plate; 12. a groove; 13. a junction block; 14. a mounting piece; 15. mounting holes, 16 and empty slots.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.

In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples:

referring to fig. 1-7, a temperature sensitive switch for preventing electric appliance from dry heating comprises a base 1, wherein a box body 2 is fixedly arranged at the top of the base 1, limit mechanisms 3 are respectively arranged on the front and back of the upper end of the box body 2, a top cover 5 is arranged at the top of the box body 2, wiring terminals 4 are fixedly arranged at two sides of the bottom of the top cover 5, two ends of each wiring terminal 4 penetrate through the box body 2, the top cover 5 is arranged at the top of a shell through the limit mechanisms 3, an inner frame 10 is fixedly arranged at the bottom of the top cover 5, a transverse frame 7 is fixedly arranged in the middle of the inner frame 10, through holes 8 are respectively formed at two ends of the transverse frame 7, a touch mechanism 9 is slidably connected at the inner lower end of the transverse frame 7, a conductive copper plate 11 is fixedly arranged at the upper end of the touch mechanism 9 penetrating through the through holes 8 on the transverse frame 7, the bottom of the conductive copper plate 11 is in fit connection with the inner ends of the wiring terminals 4, an adjusting mechanism 6 is arranged in the middle of the top cover 5, and a hollow groove 16 is formed in the bottom of the base 1.

Referring to fig. 1-7, grooves 12 are formed at the upper ends of two sides of a box body 2, the outer ends of wiring terminals 4 penetrate through the box body 2, wiring blocks 13 are fixedly mounted at the bottoms of the outer ends of the wiring terminals 4, the side surfaces of the wiring blocks 13 are I-shaped, a limiting mechanism 3 comprises fixing blocks 31 and sleeves 32, the fixing blocks 31 are fixedly mounted at the front end and the rear end of the bottom of a top cover 5 at equal intervals, limiting holes 33 are formed in the middle of the outer sides of the fixing blocks 31, limiting springs 34 are fixedly mounted at the inner sides of the sleeves 32, limiting pins 36 are fixedly mounted at the inner ends of the limiting springs 34, inner ends of the limiting pins 36 penetrate through the box body 2 and are inserted into the inner sides of the fixing blocks 31, connecting shafts 37 are fixedly mounted at the outer ends of the limiting pins 36, pull plates 35 penetrate through the sleeves 32 and the limiting springs 34, the connecting shafts 37 in the three groups of the pull plates 35 are connected with the connecting shafts 37 in the three groups of the sleeves 32, mounting pieces 14 are fixedly mounted at two sides of a base 1, mounting holes 15 are formed in the middle of the top of the mounting pieces 14, and the mounting holes 15 penetrate through the mounting pieces 14; through setting up recess 12, can be convenient for hold binding post 4, make things convenient for the dismouting of top cap 5, and set up junction block 13, can be convenient for assist binding post 4 connecting wire, facilitate the use, through setting up stop gear 3, make when using, accessible spacing spring 34 contradicts spacer pin 36 and peg graft and can assist in installing top cap 5 to spacing hole 33 inboard, when this temperature sensor is overhauld in the dismouting needs, through pulling arm-tie 35, three group's connecting axle 37 of arm-tie 35 synchronous drive box body 2 both sides draw spacer pin 36, make spacer pin 36 leave spacing hole 33 shrink to sleeve 32's inside, alright take off or install top cap 5 on the box body 2 this moment, thereby make this temperature-sensitive switch dismouting comparatively convenient and fast, be convenient for it overhauls, through setting up junction block 13 on the junction post 4, can be convenient for assist the connecting wire, the mounting hole 15 on the cooperation mounting plate 14, make this temperature-sensitive switch whole installation comparatively convenient, the practicality is stronger, application prospect is comparatively extensive.

Referring to fig. 1-5, the touch mechanism 9 includes a bimetal spring plate 91, metal heat conducting blocks 92 are fixedly mounted on two sides of the bottom of the bimetal spring plate 91, a stand column 93 is fixedly mounted on two sides of the top of the bimetal spring plate 91, an upper end of the stand column 93 penetrates through the through hole 8 and is fixedly connected with two sides of the bottom of the conductive copper plate 11, the stand column 93 is slidably connected to the inner side of the through hole 8, the middle of the top of the bimetal spring plate 91 is in fit connection with the bottom of the adjusting mechanism 6, the bottom of the metal heat conducting blocks 92 penetrates through the empty slot 16, the adjusting mechanism 6 includes a screw 61 and a hexagonal groove 62, the screw 61 is rotatably connected to the bottom of the top cover 5, a knob 63 is fixedly mounted on the upper end of the screw 61, the hexagonal groove 62 is opened in the middle of the cross frame 7, a touch rod 64 is in threaded connection with the outer surface of the screw 61, the bottom of the touch rod 64 is in fit connection with the top of the bimetal spring plate 91, the touch rod 64 is slidably connected to the inner side of the hexagonal groove 62, the top of the touch rod 64 is also set to be in a regular hexagon shape, the top of the knob 63 is fixedly mounted with a pointer 65, and the top of the top cover 5 is provided with a round scale 66 on the outer side of the knob 63; according to the scheme, the adjusting mechanism 6 is matched with the touch mechanism 9, so that during the use period, the metal heat conducting block 92 at the bottom of the bimetal elastic sheet 91 on the touch mechanism 9 penetrates through the empty slot 16 to contact equipment, when the equipment is overheated, heat can be directly transferred to the bimetal elastic sheet 91, the bimetal elastic sheet 91 is heated to enable deformation of the bimetal elastic sheet 91 to be sprung up, thereby assisting in driving the upright post 93 to move upwards, the conductive copper plate 11 can be lifted upwards through the upward movement of the upright post 93, the conductive copper plate 11 is separated from the wiring terminal 4, at the moment, a power supply can be disconnected, when the temperature is reduced, during the use period, when the sensitivity of the bimetal elastic sheet 91 needs to be adjusted, the screw 61 is driven to downwards to drive the touch rod 64 through the twisting knob 63, the touch rod 64 is limited by the hexagonal groove 62, so that the touch rod 64 can not rotate, and the bimetal elastic sheet 64 can be pressed downwards, so that the bimetal elastic sheet 91 can be deformed by adjusting the bimetal elastic sheet 64, the elasticity of the bimetal elastic sheet 91 can be adjusted upwards, when the touch rod 64 moves downwards, the temperature-sensitive scale 91 can be adjusted, the temperature-sensitive scale is adjusted, and the temperature-sensitive scale is more conveniently and the temperature-sensitive scale is adjusted, and the temperature-sensitive scale switch is used, and the temperature-sensitive scale is more convenient to be adjusted, and the temperature-sensitive scale is adjusted when the temperature-sensitive scale is adjusted.

The use principle and the advantages of the utility model are that; during use, the metal heat conducting block 92 at the bottom of the bimetal spring plate 91 on the touch mechanism 9 penetrates through the empty slot 16 to contact equipment, when the equipment is overheated, heat can be directly transferred to the bimetal spring plate 91, the bimetal spring plate 91 is heated to deform and spring upwards, thereby assisting in driving the upright post 93 to move upwards, the conductive copper plate 11 can be upwards pushed by the upward movement of the upright post 93, the conductive copper plate 11 and the wiring terminal 4 are separated, at the moment, the power supply can be disconnected, when the temperature is reduced, during use, when the sensitivity of the bimetal spring plate 91 needs to be adjusted, the screw 61 is driven to downwards drive the touch rod 64 by twisting the knob 63, the touch rod 64 is limited by the hexagonal slot 62, so that the touch rod 64 does not rotate, the touch rod 64 moves downwards, the bimetal spring plate 91 is pressed in a pressing manner, and the bimetal spring plate 91 is deformed, the elasticity of the bimetal spring plate 91 can be timely adjusted by adjusting the up-down movement of the touch rod 64, the sensitivity of the bimetal spring plate 91 can be adjusted when the touch rod 64 moves down, the bimetal spring plate 91 is more sensitive, the sensitivity of the bimetal spring plate 91 is reduced when the touch rod 64 is adjusted to move up, so that the sensitivity of the temperature-sensitive switch is adjustable during use, the temperature-sensitive switch is more convenient to use, the pointer 65 and the circular scale 66 on the knob 63 are matched, the temperature-sensitive switch can be observed according to the requirement, the temperature-sensitive switch is convenient to use, the limit pin 36 is abutted against the inner side of the limit hole 33 through the limit spring 34 to assist in installing the top cover 5, when the temperature sensor is required to be disassembled and overhauled, the pull plate 35 synchronously drives the three groups of connecting shafts 37 on two sides of the box body 2 to pull the limit pin 36 through pulling the pull plate 35, the limit pin 36 is separated from the limit hole 33 to be contracted into the inside of the sleeve 32, the top cap 5 on the box body 2 can be taken down or installed at this moment to make this temperature-sensitive switch dismouting comparatively convenient and fast, it overhauls conveniently, during the use, through setting up the junction block 13 on the binding post 4, can be convenient for assist in connecting the wire, the mounting hole 15 on the cooperation mounting plate 14 makes this temperature-sensitive switch overall installation comparatively convenient, and the practicality is stronger.

The above description is only of the preferred embodiments of the present utility model; the scope of the utility model is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present utility model, and the technical solution and the improvement thereof are all covered by the protection scope of the present utility model.

Claims (9)

1. The utility model provides a temperature-sensitive switch of dry combustion method is prevented to electrical apparatus, includes base, its characterized in that: the top fixed mounting of base has the box body, the upper end front and the back of box body all are equipped with stop gear, the box body top is equipped with the top cap, the bottom both sides of top cap all fixed mounting has binding post, binding post's both ends run through the box body, the top cap passes through stop gear and installs in the top of casing, the bottom fixed mounting of top cap has the inner frame, fixed mounting has the crossbearer in the middle of the inner frame, the through-hole has all been seted up at the both ends of crossbearer, lower extreme sliding connection has touch mechanism in the crossbearer, touch mechanism's upper end runs through the through-hole box terminal fixed mounting on the crossbearer and has electrically conductive copper, electrically conductive copper's bottom and binding post's inner laminating is connected, the centre of top cap is equipped with adjustment mechanism, the empty slot has been seted up to the bottom of base.

2. The appliance dry-heating prevention temperature-sensitive switch of claim 1, wherein: the upper ends of two sides of the box body are provided with grooves, and the outer ends of the wiring terminals penetrate through the box body.

3. The appliance dry-heating prevention temperature-sensitive switch of claim 2, wherein: the wiring terminal is characterized in that wiring blocks are fixedly mounted at the bottoms of the outer ends of the wiring terminals, and the side faces of the wiring blocks are I-shaped.

4. The appliance dry heating prevention temperature-sensitive switch as claimed in claim 3, wherein: the touch mechanism comprises a bimetal elastic sheet, wherein metal heat conducting blocks are fixedly arranged on two sides of the bottom of the bimetal elastic sheet, upright posts are fixedly arranged on two sides of the top of the bimetal elastic sheet, the upper ends of the upright posts penetrate through the through holes and are fixedly connected with two sides of the bottom of the conductive copper plate, the upright posts are slidably connected to the inner sides of the through holes, the middle of the top of the bimetal elastic sheet is in fit connection with the bottom of the adjusting mechanism, and the bottoms of the metal heat conducting blocks penetrate through empty grooves.

5. The appliance dry-fire prevention temperature-sensitive switch of claim 4, wherein: the limiting mechanism comprises a fixed block and a sleeve, wherein the fixed block is fixedly arranged at the front end and the rear end of the bottom of the top cover at equal intervals, a limiting hole is formed in the middle of the outer side of the fixed block, a limiting spring is fixedly arranged on the inner side of the sleeve, a limiting pin is fixedly arranged at the inner end of the limiting spring, and the inner end of the limiting pin penetrates through the box body and is spliced at the inner side of the fixed block.

6. The appliance dry-fire prevention temperature-sensitive switch of claim 5, wherein: the outer end of the limiting pin is fixedly provided with a connecting shaft, the outer end of the connecting shaft penetrates through the sleeve and the limiting spring, a pull plate is fixedly arranged on the outer end of the connecting shaft, and the pull plate is connected with the connecting shafts in the three groups of sleeves.

7. The appliance dry-fire prevention temperature-sensitive switch of claim 6, wherein: the mounting plate is fixedly mounted on two sides of the base, and the mounting hole is formed in the middle of the top of the mounting plate and penetrates through the mounting plate.

8. The appliance dry-fire prevention temperature-sensitive switch of claim 7, wherein: the adjusting mechanism comprises a screw rod and a hexagonal groove, the screw rod is rotationally connected to the bottom of the top cover, the upper end of the screw rod penetrates through the top cover and is fixedly provided with a knob, the hexagonal groove is arranged in the middle of the transverse frame, the outer surface of the screw rod is in threaded connection with a touch rod, the bottom of the touch rod is in fit connection with the top of the bimetal elastic sheet, the touch rod is slidingly connected to the inner side of the hexagonal groove, and the overlooking shape of the touch rod is also set to be regular hexagon.

9. The appliance dry-fire prevention temperature-sensitive switch of claim 8, wherein: the top of knob fixed mounting has the pointer, the top of top cap is located the outside of knob and is equipped with circular scale.

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