Mechanical temperature controller switch suitable for electric hot water bottle

Abstract

The utility model relates to a mechanical temperature controller switch suitable for an electric hot water bottle, which comprises a machine body, a manual temperature controller switch is arranged on the machine body, and the manual temperature controller switch comprises a base, a seesaw support and a heat conduction support plate. The front end of the base is provided with an anti-dry-burning switch and a disposable fusing protection assembly, and the disposable fusing protection assembly abuts against the anti-dry-burning switch. The heat conduction support plate is provided with an anti-dry-burning device, and the top surface of the disposable fusing protection assembly abuts against the heat conduction support plate. The seesaw support is arranged on the base in a swinging mode, the front end of the seesaw support stretches into the position below the dry-burning-resistant device and is adjacent to or abuts against the dry-burning-resistant switch, the rear end of the seesaw support is elastically connected with the rear end of the base through a connecting elastic piece, and the rear end of the base is further connected with a pressing key assembly which stretches out of the machine body and is used for controlling the seesaw support to swing up and down. According to the electric thermos bottle, an original complex and expensive circuit board control system and a temperature sensor are omitted on the traditional basis, and manual mechanical control and steam induction are directly adopted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric kettle, concretely is a mechanical temperature controller switch suitable for electric kettle. BACKGROUND

[0002] The existing electric kettle is composed of a heating element, a control circuit, a temperature sensor and a safety device. The control circuit, the temperature sensor and the safety device are separately installed. When the electric kettle is filled with water, the power supply is connected, and the control circuit transmits electric energy to the heating element. The heating element starts to work, and the temperature of the water rises. Then the temperature sensor receives the signal and transmits it to the control panel. After the water is boiled, the control circuit cuts off the power supply and stops heating. The electric kettle with the above structure is expensive, which exceeds the affordability of many consumers, resulting in the inability to quickly open the market and the small market popularization. The procurement cost and manufacturing cost are great bottlenecks, and the assembly process is complicated, the production cycle is long, the line control system and the sensing system are prone to failure, the temperature sensor is affected by the external environment temperature, and the temperature sensing deviation and misjudgment phenomenon often occur, and the after-sales maintenance cost is high. Therefore, the control structure of the electric kettle needs to be further improved. SUMMARY

[0003] The utility model discloses a kind of mechanical temperature controller switches suitable for electric kettle, which is simple and reasonable in structure, easy to install and stable in structure.

[0004] A kind of mechanical temperature controller switch suitable for electric kettle, including body, water outlet nozzle is arranged on body, inner container and the water pumping device that is connected with inner container and water outlet nozzle are equipped in the inside of body, the inner container bottom surface is connected with heating disc and manual temperature controller switch, the manual temperature controller switch includes base, seesaw support and heat conduction support plate;

[0005] The front end of the base is provided with a dry-burning prevention switch and a one-time fuse protection component connected in series on the conductive circuit, the one-time fuse protection component is pressed on the dry-burning prevention switch, and the rear end of the base is provided with a steam temperature sensing sheet, which is communicated with the inner cavity of the inner container through a steam conduction pipe.

[0006] The heat conduction support plate is fixed on the top of the front end of the base and is provided with a dry-burning prevention device, and the top surface of the one-time fuse protection component is abutted on the heat conduction support plate.

[0007] The seesaw support is swingingly seated on the base in a seesaw type, the front end of the seesaw support is inserted below the dry-burning prevention device and is adjacent to or abutted on the dry-burning prevention switch, the rear end of the seesaw support is elastically connected with the rear end of the base through a connecting spring piece, and the rear end of the base is further connected with a press key assembly extending out of the body for controlling the up-and-down swinging of the seesaw support.

[0008] The purpose of the utility model can also be solved by the following technical measures:

[0009] As a more specific scheme, the inner container bottom is provided with a water outlet, the base front end and the heat conduction support plate correspond to the water outlet to form a central avoidance passage, the water outlet is press-fitted with a water outlet connector, and the water outlet connector passes through the central avoidance passage and is connected with the water pumping device.

[0010] As a further scheme, the dry-burning prevention device includes a bimetallic strip; the front end of the seesaw support extends a pair of left and right arranged connecting arms, one of the connecting arms extends an extension arm arranged between the bimetallic strip and the dry-burning prevention switch, the extension arm is provided with a touch block arranged above the dry-burning prevention switch and an insulating column adjacent to or abutting below the bimetallic strip.

[0011] As a further scheme, the one-time fuse protection assembly includes a hot melt particle column and a fuse support fixedly assembled on the base, the hot melt particle column is throughly assembled on the fuse support, the bottom surface of the hot melt particle column is pressed on the dry-burning prevention switch, and the top surface of the hot melt particle column is abutted on the bottom surface of the heat conduction support plate.

[0012] As a further scheme, the dry-burning prevention switch includes a live wire spring group and a zero line spring group in series with each other, the touch block is arranged above the movable contact of the zero line spring group, the bottom surface of the hot melt particle column is pressed on the movable contact of the live wire spring group, the bottom surface of the base front end is provided with a connecting cavity, and the fixed end of the movable contact extends into the connecting cavity and is electrically connected with the power supply interface mounted on the machine body through a lead wire.

[0013] As a further scheme, the base top surface extends a connecting sleeve, a side-by-side seam is formed in the connecting sleeve along the height direction; the fuse support includes a connecting column and a mounting sleeve, the connecting column is inserted into the connecting sleeve and extends a limiting protrusion on the top surface of the connecting sleeve, the connecting column and the mounting sleeve are connected through a positioning rib inserted into the side-by-side seam, the hot melt particle column is inserted into the mounting sleeve, and the inner wall of the mounting sleeve is provided with a stepped surface supporting the hot melt particle column.

[0014] As a further scheme, the inner side of the connecting arm is symmetrically provided with two supporting protrusions, the outer side of the base is provided with two supporting notches corresponding to the two supporting protrusions, the seesaw support is clamped and matched with the two supporting notches through the two supporting protrusions, and the seesaw type swing is arranged on the base.

[0015] As a further scheme, the pressing key assembly comprises a key seat, a pressing key body and a key linkage; the key seat is buckled at the rear end of the base, the middle of the pressing key body is rotationally hinged with the rear end of the key seat, and the inner end of the pressing key body is provided with a clamping opening, the key linkage comprises two linkage plates, the middle of the two linkage plates is rotationally hinged with the front end of the key seat, the front end of the two linkage plates is pivotally connected with the rear end of the rocker support, and the rear end of the two linkage plates is connected with a linkage shaft clamped in the clamping opening.

[0016] As a further scheme, the bottom surface of the rear end of the base is provided with a sensing cavity, and the steam temperature sensing sheet is clamped in the sensing cavity; a steam inlet communicating with the sensing cavity is formed in the key seat, a steam guide cover is arranged on the steam inlet, and one end of the steam conducting pipe extends into the steam guide cover.

[0017] As a further scheme, the water pumping device comprises a water pump, the water inlet port of the water pump is connected with the water outlet connector through a first pipeline, and the water outlet port of the water pump is connected with the water outlet nozzle of the body through a second pipeline.

[0018] The beneficial effects of the utility model are as follows:

[0019] 1. Cost advantage, cancel the original complex and expensive circuit board control system and temperature sensor on the basis of tradition, reduce manufacturing cost, directly adopt manual mechanical control, steam response, realize automatic power-off function, solve the problem caused by control system and sensor fault.

[0020] 2. Easy assembly, fast and convenient, only need to install the mechanical temperature controller switch at the bottom of the electric kettle, then connect the heating element of the heating disc with the mechanical temperature controller switch, complete the installation, simplify the processing procedure, improve production efficiency.

[0021] 3. Double protection measures are arranged, safety performance is improved, the double temperature sensing sheet structure and the one-time fuse protection assembly are combined, and the double protection effect is achieved. DRAWINGS

[0022] Figure 1 It is a cross-sectional structure schematic view of the electric kettle in the utility model.

[0023] Figure 2 It is a water pumping device structure schematic view in the utility model.

[0024] Figure 3 It is a manual temperature controller switch structure schematic view in the utility model.

[0025] Figure 4 It is another angle structure schematic view of the manual temperature controller switch in the utility model.

[0026] Figure 5 It is the exploded structural schematic view of the manual temperature controller switch in the utility model.

[0027] Figure 6 It is the structural schematic view of the disposable fuse protection assembly in the utility model.

[0028] Figure 7 It is the exploded structural schematic view of the rocker support and the pressing key assembly in the utility model. DETAILED DESCRIPTION

[0029] The utility model is further explained below in combination with the drawings and examples.

[0030] As Figures 1 to 7 The utility model discloses a mechanical temperature controller switch suitable for electric kettle, including body 1, be provided with the water outlet nozzle 101 on body 1, be equipped with inner container 2 and the water pumping device 3 of intercommunication inner container 2 and water outlet nozzle 101 in body 1, the inner container 2 bottom surface is connected with heating disc 4 and manual temperature controller switch 5, manual temperature controller switch 5 includes base 6, rocker support 7 and heat support plate 8;

[0031] The base 6 front end is provided with the dry -burning prevention switch 9 and disposable fuse protection assembly 10 that are connected in series on the conductive circuit, disposable fuse protection assembly 10 is pressed on dry -burning prevention switch 9, the base 6 rear end is provided with steam temperature sensing sheet 11, and steam temperature sensing sheet 11 is communicated with the inner chamber of inner container 2 through steam transmission pipe 12a;

[0032] The heat support plate 8 is fixed at the top of the base 6 front end, and is provided with a dry -burning prevention device 12, and the top surface of the disposable fuse protection assembly 10 is abutted on the heat support plate 8;

[0033] The rocker support 7 is swingingly arranged on the base 6 in a rocker type, the front end of the rocker support 7 is inserted below the dry -burning prevention device 12 and is adjacent to or abutted with the dry -burning prevention switch 9, the rear end of the rocker support 7 is elastically connected with the rear end of the base 6 through the connecting spring 16, and the rear end of the base 6 is further connected with the pressing key assembly 13 which is extended outside the body 1 and is used for controlling the up-down swing of the rocker support 7.

[0034] This kind of electric kettle cancels the original complex and expensive circuit board control system and temperature sensor on the basis of traditional electric kettle, reduces manufacturing cost, directly adopts manual mechanical control, steam sensing, realizes automatic power-off function, solves the problem caused by control system and sensor failure;

[0035] When installing the mechanical temperature controller switch, only need to install the mechanical temperature controller switch at the bottom of the electric kettle, then connect the heating element of the heating disc 4 with the mechanical temperature controller switch, and the installation is completed, which is simple and easy to assemble, fast and convenient, simplifies the processing procedure and improves the production efficiency.

[0036] In addition, the mechanical temperature controller switch is provided with the anti-dry burning device 12 and the one-time fuse protection assembly, and has the double protection effect.

[0037] The inner container 2 is provided with a water outlet 201 at the bottom, the base 6 is provided with a central avoiding passage 801 corresponding to the water outlet 201 at the front end and the heat conduction support plate 8, the water outlet 201 is provided with a water outlet connector 31, the water outlet connector 31 passes through the central avoiding passage 801 and is connected with the water pumping device 3; the water outlet 201 is arranged at the central position of the base 6, so that the water outlet connector 31 can pass through the base 6 and be led outwards, the structure of the bottom of the inner container 2 can be more compact in spatial layout, and the size of the electric kettle can be reduced.

[0038] The anti-dry burning device 12 comprises a bimetallic strip 121; the front end of the seesaw support 7 extends a pair of left and right arranged connecting arms 71, one of the connecting arms 71 extends an extension arm 72 arranged between the bimetallic strip 121 and the anti-dry burning switch 9, the extension arm 72 is provided with a touch block 122 arranged above the anti-dry burning switch 9 and an insulating column 123 adjacent to or abutting below the bimetallic strip 121;

[0039] When the anti-dry burning device 12 is used, under the high-temperature dry burning state, the bimetallic strip 121 is deformed by temperature, the deformed end of the bimetallic strip 121 is pressed against the insulating column 123, the front end of the seesaw support 7 is swung downward, the touch block 122 is pressed to push the anti-dry burning switch 9 to be disconnected and stopped from heating, and the rear end of the seesaw support 7 drives the pressing key assembly 13 to be bounced upward and reset.

[0040] The one-time fuse protection assembly 10 comprises a hot-melt particle column 1001 and a fuse support 1002 fixedly assembled on the base 6, the hot-melt particle column 1001 is assembled in a penetrating mode on the fuse support 1002, the bottom surface of the hot-melt particle column 1001 is pressed against the anti-dry burning switch 9, and the top surface of the hot-melt particle column 1001 is pressed against the bottom surface of the heat conduction support plate 8;

[0041] The one-time fuse protection assembly 10 mainly functions when the anti-dry burning device 12 is damaged or fails, when the temperature is higher than the melting temperature of the hot-melt particle column 1001, the hot-melt particle column 1001 is dissolved as a whole or towards the top end of the heat conduction support plate 8, the anti-dry burning switch 9 is reset upward after losing the force of the hot-melt particle column 1001, so that the anti-dry burning switch 9 is disconnected and stopped from heating.

[0042] The dry-burn prevention switch 9 comprises a live wire spring group 91 and a zero line spring group 92 which are connected in series, the contact pressure block 122 is arranged above the movable contact 901 of the zero line spring group 92, the bottom surface of the hot melt particle column 1001 is pressed against the movable contact 901 of the live wire spring group 91, the bottom surface of the front end of the base 6 is provided with a connecting cavity 601, the fixed end of the movable contact 901 of the live wire spring group 91 and the zero line spring group 92 extends into the connecting cavity 601 and is electrically connected with the power interface 15 mounted on the machine body 1 through a wire; the live wire spring group 91 and the zero line spring group 92 are directly connected with the power interface 15, which is simple to assemble and improves the production efficiency.

[0043] The top surface of the base 6 extends a connecting sleeve 61, the connecting sleeve 61 is provided with a side-by-side seam 611 in the height direction; the fuse support 1002 comprises a connecting column 1003 and a mounting sleeve 1004, the connecting column 1003 is inserted into the connecting sleeve 61 and the top thereof extends a limiting protrusion 1005 which is arranged on the top surface of the connecting sleeve 61, the connecting column 1003 and the mounting sleeve 1004 are connected through a positioning rib 1006 which is inserted into the side-by-side seam 611, the hot melt particle column 1001 is inserted into the mounting sleeve 1004, and the inner wall of the mounting sleeve 1004 is provided with a stepped surface 1007 which supports the hot melt particle column 1001;

[0044] The side-by-side seam 611 and the positioning rib 1006 cooperate to quickly install the fuse support 1002 and play a positioning and limiting role, and the limiting protrusion 1005 has a limiting effect but mainly facilitates the staff to take and place conveniently.

[0045] The inner side of the connecting branch 71 is symmetrically provided with two supporting protrusions 711, the outer side of the base 6 is provided with two supporting notches 62 corresponding to the two supporting protrusions 711, the rocker support 7 is clamped and matched through the two supporting protrusions 711 and the two supporting notches 62, so as to realize the rocking and sitting of the rocker support 7 on the base 6; the structure is simple, convenient to install, and the rocking action of the rocker support 7 is crisp and the rocking position is clear.

[0046] The pressing key assembly 13 comprises a key seat 131, a pressing key body 132 and a key linkage 133; the key seat 131 is buckled at the rear end of the base 6, the middle of the pressing key body 132 is rotationally hinged with the rear end of the key seat 131, and the inner end thereof is provided with a clamping opening 1321, the key linkage 133 comprises two linkage plates 1331, the middle of the two linkage plates 1331 is rotationally hinged with the front end of the key seat 131, the front end of the two linkage plates 1331 is dolly matched with the rear end of the rocker support 7, and the rear end of the two linkage plates 1331 is connected with a linkage shaft 1332 which is clamped in the clamping opening 1321.

[0047] When the user needs to start the electric kettle again to boil water, the user manually presses the press key body 132, the inner end of the press key body 132 swings upward, the clamping opening 1321 picks the linkage shaft 1332, the front end of the two linkage plates 1331 swings downward and pushes the rear end of the rocker bracket 7 downward, the front end of the rocker bracket 7 swings upward, the contact block 122 is away from the moving contact 901 of the zero line spring group 92, the dry-burning prevention switch 9 is connected to the conductive circuit, and the insulating convex column 123 is close to or abuts against the bimetallic strip 121 again for the next dry-burning.

[0048] The bottom surface of the rear end of the base 6 is provided with an induction cavity 602, the steam temperature sensing sheet 11 is clamped in the induction cavity 602, the key seat 131 is provided with a steam inlet 1311 which is communicated with the induction cavity 602, the steam inlet 1311 is provided with a steam guide cover 134, and one end of the steam guide pipe 12a extends into the steam guide cover 134, so that the high-temperature steam generated by the inner container 2 can be concentrated to blow the steam temperature sensing sheet 11, and the temperature sensing precision is improved.

[0049] The water pumping device 3 comprises a water pumping pump 32, the water inlet port of the water pumping pump 32 is connected with the water outlet connector 31 through the first pipeline 33, and the water outlet port of the water pumping pump 32 is connected with the water outlet nozzle 101 of the machine body 1 through the second pipeline 34, so that the electric kettle can realize automatic water outlet.

[0050] The above is the preferred scheme of the present application, and the basic principle, main features and advantages of the present application are displayed and described. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application, and the scope of protection of the present application is defined by the appended claims and equivalents.

Claims

1. A mechanical thermostat switch for an electric thermos, comprising a body, a water outlet provided on the body, an inner liner and a water pumping device connecting the inner liner and the water outlet, a heating plate and a manual thermostat switch connected to the bottom of the inner liner, characterized in that : The manual thermostat switch includes a base, a rocker bracket and a heat-conducting bracket plate; The front end of the base is provided with an anti-dry-burn switch and a one-time fuse protection component connected in series to the conductive circuit, the one-time fuse protection component is pressed against the anti-dry-burn switch, and the rear end of the base is provided with a steam temperature sensor, which is connected to the inner cavity of the inner tank through a steam conduction pipe; The heat-conducting support plate is fixed to the top of the front end of the base and is provided with an anti-dry-burning device. The top surface of the one-time fuse protection component is supported on the heat-conducting support plate; The seesaw bracket is seated on the base in a seesaw-like swinging manner, the front end of the seesaw bracket extends under the anti-dry-burning device and is adjacent to or against the anti-dry-burning switch, the rear end of the seesaw bracket is elastically connected to the rear end of the base through a connecting spring sheet, and the rear end of the base is also connected to a push button assembly extending outside the fuselage for controlling the up and down swinging of the seesaw bracket.

2. A mechanical thermostat switch suitable for an electric thermos according to claim 1, characterized in that : A water outlet is provided at the bottom of the inner tank, and a central avoidance channel is provided at the front end of the base and the heat-conducting support plate corresponding to the water outlet. A water outlet joint is pressed onto the water outlet, and the water outlet joint passes through the central avoidance channel and is connected to the pumping device.

3. A mechanical thermostat switch suitable for an electric thermos according to claim 1, characterized in that : The anti-dry-heat device includes a bimetallic strip; a pair of connecting arms arranged on the left and right extend from the front end of the rocker bracket, one of the connecting arms extends to an extension arm placed between the bimetallic strip and the anti-dry-heat switch, and the extension arm is provided with a touch block placed above the anti-dry-heat switch and an insulating protrusion adjacent to or against the bottom of the bimetallic strip.

4. A mechanical thermostat switch suitable for an electric thermos according to claim 3, characterized in that : The disposable fuse protection component includes a hot melt particle column and a fuse bracket fixedly assembled on the base. The hot melt particle column is assembled on the fuse bracket in a through-type manner. The bottom surface of the hot melt particle column is pressed against the anti-dry burning switch, and the top surface of the hot melt particle column is pressed against the bottom surface of the heat-conducting bracket plate.

5. A mechanical thermostat switch suitable for an electric thermos according to claim 4, characterized in that : The anti-dry-burn switch includes a live wire shrapnel group and a neutral wire shrapnel group connected in series. The touch block is placed above the movable contact piece of the neutral wire shrapnel group. The bottom surface of the hot-melt particle column presses against the movable contact piece of the live wire shrapnel group. The bottom surface of the front end of the base is provided with a connecting cavity. The fixed end of the movable contact piece extends into the connecting cavity and is electrically connected to the power interface installed on the body through a wire.

6. A mechanical thermostat switch suitable for an electric thermos according to claim 4, characterized in that : A connecting sleeve extends from the top surface of the base, and a side seam is opened on the connecting sleeve along the height direction; the fuse bracket includes a connecting column and a mounting sleeve, the connecting column is inserted in the connecting sleeve, and a limiting protrusion extends from the top and is resting on the top surface of the connecting sleeve, the connecting column and the mounting sleeve are connected by a positioning rib inserted into the side seam, the hot melt particle column is inserted in the mounting sleeve, and the inner wall of the mounting sleeve is provided with a step surface for supporting the hot melt particle column.

7. A mechanical thermostat switch suitable for an electric thermos according to claim 3, characterized in that : Two supporting protrusions are symmetrically arranged on the inner side of the connecting arm, and two supporting recesses are arranged on the outer side of the base corresponding to the two supporting protrusions. The seesaw bracket is engaged with the two supporting protrusions and the two supporting recesses to realize a seesaw-like swing sitting on the base.

8. A mechanical thermostat switch suitable for an electric thermos according to claim 1, characterized in that : The push key assembly includes a button seat, a push key body and a button linkage part; the button seat is buckled on the rear end of the base, the middle of the push key body is rotatably hinged to the rear end of the button seat, and a clamp is opened at its inner end, and the button linkage part includes two linkage plates, the middle of the two linkage plates is rotatably hinged to the front end of the button seat, the front ends of the two linkage plates are movably matched with the rear end of the rocker bracket, and a linkage shaft clamped in the clamp is connected between the rear ends of the two linkage plates.

9. A mechanical thermostat switch suitable for an electric thermos according to claim 8, characterized in that : A sensing cavity is provided on the bottom surface of the rear end of the base, and the steam temperature sensor is clamped in the sensing cavity; a steam inlet connected to the sensing cavity is opened on the button seat, and a steam inlet cover is provided on the steam inlet, and one end of the steam conduction pipe extends into the steam inlet cover.

10. A mechanical thermostat switch suitable for an electric thermos according to claim 2, characterized in that :The pumping device includes a water pump, the water inlet port of the water pump is connected to the water outlet joint through a first pipe, and the water outlet port of the water pump is connected to the water outlet nozzle of the fuselage through a second pipe.

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