CN111184448B

CN111184448B - Inner pot detection device, pot body assembly and cooking utensil having the same

Info

Publication number: CN111184448B
Application number: CN201811268695.6A
Authority: CN
Inventors: 彭锋; 杨兴国; 高万宝; 莫荣康
Original assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Priority date: 2018-10-29
Filing date: 2018-10-29
Publication date: 2024-12-03
Anticipated expiration: 2038-10-29
Also published as: CN111184448A

Abstract

The invention discloses an inner pot detection device, a pot body assembly with the same and a cooking appliance, wherein the inner pot detection device comprises a switching part, a moving part and a switching part, the switching part comprises an insulating part and a conducting part, the moving part can move between a first position and a second position relative to the switching part, the moving part is provided with a first current branch and a second current branch, a resistor is arranged on the first current branch, the second current branch is connected through the conducting part when the moving part is positioned at the first position, and the second current branch is disconnected by the insulating part when the moving part is positioned at the second position. According to the inner pot detection device provided by the embodiment of the invention, whether the inner pot is placed in the outer pot or not in the electrified state can be effectively detected, the safety performance is higher, and the manufacturing cost is lower.

Description

Inner pot detection device, pot body assembly with same and cooking utensil

Technical Field

The invention relates to the field of kitchen appliances, in particular to an inner pot detection device, a pot body assembly with the same and a cooking appliance.

Background

In the related art, a user sometimes forgets to place an inner pot in place to start electrifying and cooking, and the cooking appliance still can continue to heat due to the lack of a detection device for placing the inner pot, so that heat is continuously generated in the cooking appliance to fuse a fuse in the cooking appliance and even fire occurs, and therefore the cooking appliance has great potential safety hazard and poor user experience.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the inner pot detection device which can detect whether the inner pot is placed correctly or not and has higher safety performance.

The inner pot detection device comprises a switching part and a moving part, wherein the switching part comprises an insulating part and a conductive part, the moving part is movable relative to the switching part between a first position and a second position, the moving part is provided with a first current branch and a second current branch, a resistor is arranged on the first current branch, the second current branch is connected through the conductive part when the moving part is positioned at the first position, and the second current branch is disconnected by the insulating part when the moving part is positioned at the second position.

According to the inner pot detection device provided by the embodiment of the invention, whether the inner pot is placed in the outer pot or not in the electrified state can be effectively detected, the safety performance is higher, and the manufacturing cost is lower.

In addition, the inner pot detection device according to the embodiment of the first aspect of the present invention may further have the following additional technical features:

according to some embodiments of the invention, the inner pot detection device further comprises an inner elastic piece, wherein the inner elastic piece is arranged between the switching part and the moving part and is used for pushing the moving part to the first position.

According to some embodiments of the invention, the moving part comprises a first conductive sheet and a second conductive sheet, the first conductive sheet and the second conductive sheet are respectively matched with the switching part in a movable mode, the resistor is provided with a first resistor pin and a second resistor pin, the first resistor pin is connected with the first conductive sheet, the second resistor pin is connected with the second conductive sheet, wherein one part of the first conductive sheet, one part of the second conductive sheet, the first resistor pin and the second resistor pin form the first current branch, and the other part of the first conductive sheet and the other part of the second conductive sheet form the second current branch.

According to some embodiments of the invention, the insulating member is configured into a column shape extending along an up-down direction, the conductive member is arranged at an upper end of the insulating member, a cross-sectional area of the conductive member is larger than that of the insulating member, the first conductive sheet and the second conductive sheet are respectively matched with the insulating member in an up-down movable manner, when the moving part is positioned at the first position, the first conductive sheet and the second conductive sheet are respectively contacted with the conductive member, and when the moving part is positioned at the second position, the first conductive sheet and the second conductive sheet are respectively separated from the conductive member.

According to some embodiments of the invention, the first conductive sheet has a first holding claw and the second conductive sheet has a second holding claw, the first holding claw and the second holding claw being held around the outer periphery of the insulating member and being separated from each other.

According to some embodiments of the invention, the first holding claw is provided with a first conductive protrusion, the second holding claw is provided with a second conductive protrusion, the first conductive protrusion and the second conductive protrusion are respectively contacted with the lower surface of the conductive piece when the moving part is positioned at the first position, and the first conductive protrusion and the second conductive protrusion are respectively separated from the lower surface of the conductive piece when the moving part is positioned at the second position.

According to some embodiments of the invention, the first conductive sheet has a first conductive pin and a first fitting groove, the second conductive sheet has a second conductive pin and a second fitting groove, the first resistive pin is fitted in the first fitting groove and connected to the first conductive pin, and the second resistive pin is fitted in the second fitting groove and connected to the second conductive pin.

According to some embodiments of the invention, the first conductive pin is bent downward and parallel to the central axis of the switching part, and the second conductive pin is bent downward and parallel to the central axis of the switching part.

According to some embodiments of the invention, the conductive piece comprises a conductive part, a connecting part and an insulating part, wherein the upper surface of the conductive part is provided with a stop groove, the lower end of the inner elastic piece is matched with the stop groove, the connecting part is connected to the lower surface of the conductive part, the upper end surface of the insulating part is provided with a mounting hole, and the connecting part is inserted into the mounting hole.

According to some embodiments of the invention, the moving part further comprises a fixing seat, the resistor, the first conductive sheet and the second conductive sheet are respectively arranged on the fixing seat and keep relative positions through the fixing seat, and the inner elastic piece is arranged in the fixing seat, and two ends of the inner elastic piece are respectively abutted against the fixing seat and the conductive piece.

According to some embodiments of the invention, the fixing base has a mounting groove formed by downwardly recessing an upper surface of the fixing base, and the resistor is mounted to the mounting groove.

According to some embodiments of the invention, the fixing base has a receiving cavity, the receiving cavity is opened downwards, the inner elastic member is arranged in the receiving cavity, the upper end of the inner elastic member is abutted against the top wall of the receiving cavity, and the lower end of the inner elastic member is abutted against the upper surface of the conductive member.

According to some embodiments of the invention, the moving part further comprises a limiting part, wherein the limiting part is sleeved on the outer side of the fixed seat, the limiting part is provided with a guide hole, the switching part movably penetrates through the guide hole, the top cover is assembled on the top of the limiting part, the upper end of the fixed seat abuts against the top cover, and the lower end of the fixed seat abuts against the bottom wall of the limiting part.

According to some embodiments of the invention, the moving part further comprises a sleeve sleeved outside the limiting piece, wherein the upper end of the sleeve, the upper end of the limiting piece and the top cover are assembled with each other, and the sleeve is suitable for being movably mounted on a carrier of the inner pot detection device.

According to some embodiments of the invention, the inner pot detection device further comprises an outer elastic piece, wherein the outer elastic piece is sleeved on the outer side of the sleeve, one end of the outer elastic piece is abutted against the top cover, and the other end of the outer elastic piece is abutted against the carrier.

According to some embodiments of the invention, the switching part is spaced a predetermined distance from the carrier only when the moving part is under the elastic force of the outer elastic member.

According to some embodiments of the invention, the predetermined distance is greater than or equal to 1mm.

According to some embodiments of the invention, the maximum displacement of the moving part is greater than the predetermined distance.

According to some embodiments of the invention, a limiting post adapted to pass through a limiting hole in the carrier is arranged at the lower end of the sleeve, and an anti-falling part positioned below the carrier is arranged on the limiting post.

According to some embodiments of the invention, the resistor is a thermistor.

The pot body assembly comprises an outer pot, an inner pot detection device, and an inner pot, wherein the inner pot detection device is arranged on the outer pot, and the inner pot is arranged in the outer pot and presses the moving part from the first position to the second position.

According to the pot body assembly provided by the embodiment of the second aspect of the invention, the inner pot detection device provided by the embodiment of the first aspect of the invention has the advantages of higher safety performance, good user experience and the like.

The cooking appliance according to the embodiment of the third aspect of the present invention comprises a pot assembly according to the embodiment of the second aspect of the present invention.

According to the cooking utensil disclosed by the embodiment of the third aspect of the invention, the pot body assembly disclosed by the embodiment of the second aspect of the invention has the advantages of higher safety performance, better user experience and the like.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a moving part of an inner pot detecting device in a first position according to an embodiment of the present invention;

FIG. 2 is a schematic view of a moving part of the inner pot detecting device in a second position according to an embodiment of the present invention;

FIG. 3 is an exploded view of an inner pot detection device according to an embodiment of the present invention;

FIG. 4 is a top view of an inner pot detection device according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view taken along the direction A-A in FIG. 4;

FIG. 6 is a schematic view of the inner pot assembly in a first position with the moving part out of contact with the inner pot detection device according to an embodiment of the present invention;

FIG. 7 is a partial enlarged view at B in FIG. 6;

FIG. 8 is a schematic view of an inner pot of the inner pot assembly according to an embodiment of the present invention when the moving part is pressed down by a predetermined distance H;

FIG. 9 is an enlarged view of a portion of FIG. 8 at C;

FIG. 10 is a schematic view of an inner pot of the inner pot assembly pressing down a moving part to a second position according to an embodiment of the present invention;

fig. 11 is a partial enlarged view at D in fig. 10.

Reference numerals:

the inner pot detection device 100, the inner pot 200;

The switching part 10, the conductive member 11, the conductive part 111, the stop groove 111a, the connecting part 112, the axial positioning groove 112a, the insulating member 12, the mounting hole 121, the axial positioning protrusion 122;

A moving part 20, a resistor 21, a first resistor pin 21a, a second resistor pin 21b;

the first conductive sheet 22, the first holding claw 221, the first conductive protrusion 222, the first conductive pin 223, the first assembling groove 224, the second conductive sheet 23, the second holding claw 231, the second conductive protrusion 232, the second conductive pin 233 and the second assembling groove 234;

The fixing seat 24, the mounting groove 241, the accommodating cavity 242, the limiting piece 25, the bottom plate 251, the guide hole 251a, the first extension part 252, the second extension part 253, the assembly edge 254, the top cover 26, the sleeve 27, the limiting post 271 and the anti-falling part 272;

an inner elastic member 30, an outer elastic member 40;

the carrier 50, the mounting recess 51, and the limiting hole 511.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

An inner pot detection device 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 11.

As shown in fig. 1 and 2, the inner pot detecting device 100 according to the embodiment of the first aspect of the present invention includes a switching part 10 and a moving part 20.

The switching part 10 includes an insulating member 12 and a conductive member 11, the moving part 20 is movable between a first position and a second position relative to the switching part 10, the moving part 20 has a first current branch and a second current branch, a resistor 21 is disposed on the first current branch, when the moving part 20 is located at the first position, the second current branch is turned on by the conductive member 11, and when the moving part 20 is located at the second position, the second current branch is turned off by the insulating member 12.

Specifically, the inner pot detection device 100 is adapted to be installed below the inner pot 200, and the moving part 20 is driven to move from the first position to the second position by the pressure action of the inner pot 200 on the inner pot detection device 100. The conducting element 11 is connected to the insulating element 12, two ends of the resistor 21 are connected to a closed circuit, as shown in fig. 1, when the moving part 20 is at the first position relative to the switching part 10, two ends of the resistor 21 are in contact with the conducting element 11, at this time, the second current branch is connected to the closed circuit, and since the resistance value of the resistor 21 is far greater than that of the conducting element 11, the resistor 21 is in a short circuit state, i.e. the first current branch is short-circuited, and the moving part 20 moves relative to the switching part 10 to disconnect two ends of the resistor 21 from the conducting element 11 until the moving part moves to the second position as shown in fig. 2, during which the second current branch is disconnected from the closed circuit, and the first current branch is in the path. That is, when the moving part 20 is at the first position, the first current branch is short-circuited and the second current branch is open-circuited, and when the moving part 20 is at the second position, the first current branch is open-circuited and the second current branch is open-circuited.

The operation principle of the inner pot detecting device 100 according to the embodiment of the present invention is described below with reference to fig. 1 and 2. When the inner pot 200 is not placed in the cooking appliance, the inner pot detection device 100 is not affected by the pressure of the inner pot 200, as shown in fig. 1, the moving part 20 is located at the first position, two ends of the resistor 21 are in contact with the conductive member 11 to enable the second current branch to be connected to the closed circuit, the resistor 21 is broken, i.e. the current flowing through the first current branch approaches zero, when the inner pot 200 is placed in the cooking appliance, the inner pot detection device 100 is affected by the pressure of the inner pot 200, and the moving part 20 moves from the first position to the second position shown in fig. 2 to disconnect the two ends of the resistor 21 from the conductive member 11, so that the second current branch is broken and the first current branch is passed. Thus, by detecting whether the conductive member 11 is connected to the closed circuit or by detecting the magnitude of the current value flowing through the resistor 21, it is possible to determine whether the inner pot 200 is placed in the cooking appliance.

According to the inner pot detection device 100 of the embodiment of the invention, the resistor 21 is short-circuited or passed through by the movement of the moving part 20 between the first position and the second position relative to the switching part 10, so that whether the inner pot 200 is placed in the cooking appliance or not is detected, when a user does not operate properly or forgets to place the inner pot 200 in the cooking appliance to cook the cooking appliance by electrifying, the inner pot detection device 100 can effectively detect the condition that the user leaks the inner pot 200, and take measures of stopping heating or reporting errors, thereby avoiding the continuous heating caused by the leak of the inner pot 200 to cause fuse melting or even fire, improving the safety performance and having better user experience. The inner pot detection device 100 provided by the embodiment of the invention has a simple structure, can monitor the inner pot 200 without arranging detection elements such as a photoelectric sensor and the like, and has low manufacturing cost.

Therefore, the inner pot detection device 100 according to the embodiment of the invention can effectively detect whether the inner pot 200 is placed in the outer pot in the electrified state, and has better safety performance and lower manufacturing cost.

In some embodiments of the present invention, as shown in fig. 3 and 5, the inner pot detection device 100 further includes an inner elastic member 30, where the inner elastic member 30 is disposed between the switching portion 10 and the moving portion 20, for pushing the moving portion 20 to the first position.

Specifically, the inner elastic member 30 is often compressed between the switching part 10 and the moving part 20, the inner elastic member 30 often pushes the moving part 20 to the first position, the spring is further compressed when the inner pot 200 is placed in the inner pot detecting device 100, the moving part 20 moves to the second position under the pressure, and when the inner pot 200 is taken out of the cooking appliance, that is, the inner pot detecting device 100 is not acted by the pressure of the inner pot 200, the moving part 20 is pushed to the first position under the elastic force of the inner elastic member 30. Thus, the inner elastic member 30 can play a role in resetting the moving part 20, and when the inner pot 200 is taken out, the moving part 20 is always located at the first position so that the inner pot detecting device 100 is in a seated state.

In some embodiments of the present invention, as shown in fig. 1 and 2, the moving part 20 includes a first conductive sheet 22 and a second conductive sheet 23. The first conductive sheet 22 and the second conductive sheet 23 are respectively movably matched with the switching part 10, the resistor 21 is provided with a first resistor pin 21a and a second resistor pin 21b, the first resistor pin 21a is connected with the first conductive sheet 22, the second resistor pin 21b is connected with the second conductive sheet 23, wherein a part of the first conductive sheet 22, a part of the second conductive sheet 23, the first resistor pin 21a and the second resistor pin 21b form a first current branch, and another part of the first conductive sheet 22 and another part of the second conductive sheet 23 form a second current branch. The first current branch is always connected into the closed circuit, and the second current branch is connected into the closed circuit only when the moving part 20 is located at the first position.

It should be noted that the first conductive piece 22 and the second conductive piece 23 are respectively connected to two ends of the resistor 21, and the first conductive piece 22, the second conductive piece 23, and the resistor 21 move as a whole with respect to the switching portion 10. The first conductive sheet 22 has a part where the first conductive sheet 22 is connected to the first resistor pin 21a, the second conductive sheet 23 has a part where the second conductive sheet 23 is connected to the second resistor pin 21b, and the first conductive sheet 22 has a part where the first conductive sheet 22 is in contact with the conductive member 11, and the second conductive sheet 23 has a part where the second conductive sheet 23 is in contact with the conductive member 11.

Alternatively, with continued reference to the embodiment shown in fig. 1 and 2, the insulating member 12 is configured into a column shape extending in the up-down direction, the conductive member 11 is disposed at the upper end of the insulating member 12 and has a cross-sectional area larger than that of the insulating member 12, the first conductive sheet 22 and the second conductive sheet 23 are respectively movably fitted to the insulating member 12 up and down, when the moving portion 20 is located at the first position, the first conductive sheet 22 and the second conductive sheet 23 are respectively contacted with the conductive member 11, and when the moving portion 20 is located at the second position, the first conductive sheet 22 and the second conductive sheet 23 are respectively separated from the conductive member 11.

Specifically, the first conductive piece 22 and the second conductive piece 23 are disposed around the outside of the insulating member 12 and can move up and down in a direction parallel to the central axis of the insulating member 12, the cross-sectional area of the conductive member 11 is larger than that of the insulating member 12, and the cross-sectional shape of the conductive member 11 is configured into a shape through which the first conductive piece 22 and the second conductive piece 23 cannot pass, that is, when the resistor 21 moves to a maximum distance with respect to the switching portion 10, the first conductive piece 22 and the second conductive piece 23 are abutted against the lower surface of the conductive member 11, thereby playing a role of limiting the moving portion 20 so that the moving portion 20 is always pushed to the first position by the inner elastic member 30 and cannot be separated from the first position.

According to some specific examples of the present invention, as shown in fig. 1 and 2, the conductive member 11 includes a conductive portion 111 and a connection portion 112. The upper surface of the conductive part 111 is provided with a stop groove 111a, the lower end of the inner elastic member 30 is matched with the stop groove 111a, the connecting part 112 is connected to the lower surface of the conductive part 111, the upper end surface of the insulating member 12 is provided with a mounting hole 121, and the connecting part 112 is inserted into the mounting hole 121.

Specifically, the upper surface of the conductive part 111 is provided with a downward concave abutting groove 111a, the lower end of the inner elastic member 30 abuts against the bottom wall of the abutting groove 111a, the connecting part 112 is configured in a columnar structure and is connected to the center of the lower surface of the conductive member 11, the upper end surface of the insulating member 12 is configured with a downward extending mounting hole 121, the connecting part 112 is suitable for extending into the mounting hole 121 to be connected with the connecting part 112, preferably, as shown in fig. 3 and 5, the side surface of the connecting part 112 is configured with an axial positioning groove 112a, the axial positioning groove 112a is formed by the side surface of the connecting part 112 being concave toward the central axis of the connecting part 112, and the axial positioning groove 112a extends along the circumferential direction of the connecting part 112, and the side wall of the mounting hole 121 is provided with an axial positioning protrusion 122 matched with the axial positioning groove 112a, thereby the positioning effect of the connecting part 112 and the insulating member 12 in the axial direction of the connecting part 112 is good, and the connecting part 112 can be prevented from being separated from the insulating member 12. Of course, in other embodiments of the present invention, the connection portion 112 and the mounting hole 121 may be connected by an interference fit or glue bonding.

Alternatively, as shown in fig. 1 to 3, the first conductive sheet 22 has a first holding claw 221, and the second conductive sheet 23 has a second holding claw 231, and the first holding claw 221 and the second holding claw 231 are held around the outer periphery of the insulating member 12 and are separated from each other. Specifically, the first holding claw 221 and the second holding claw 231 are always located below the conductive portion 111, edges of the first holding claw 221 and the second holding claw 231 facing the insulating member 12 are configured to be arc-shaped, and when the moving portion 20 is located at the first position, the first holding claw 221 and the second holding claw 231 are both in contact with the lower surface of the conductive portion 111. Thus, the conductive member 11 has a good abutting action on the first conductive sheet 22 and the second conductive sheet 23, thereby playing a role of limiting the moving portion 20 and keeping the moving portion 20 in the first position.

Further, as shown in fig. 3, the first holding claw 221 is provided with a first conductive protrusion 222, the second holding claw 231 is provided with a second conductive protrusion 232, when the moving part 20 is located at the first position, the first conductive protrusion 222 and the second conductive protrusion 232 are respectively contacted with the lower surface of the conductive member 11, and when the moving part 20 is located at the second position, the first conductive protrusion 222 and the second conductive protrusion 232 are respectively separated from the lower surface of the conductive member 11. Specifically, the first conductive piece 22 and the second conductive piece 23 are respectively contacted with the lower surface of the conductive part 111 through the first conductive protrusion 222 and the second conductive protrusion 232, the first conductive protrusion 222 is two and is respectively protruded upward from the upper surface of the first holding claw 221, and the second conductive protrusion 232 is two and is respectively protruded upward from the upper surface of the second holding claw 231, thereby ensuring that the first conductive piece 22 and the second conductive piece 23 are better contacted with the conductive piece 11 when the moving part 20 is located at the first position. It should be noted that the two first conductive bumps 222 and the two second conductive bumps 232 are only one embodiment of the present invention, and the specific number of the first conductive bumps 222 and the second conductive bumps 232 is not limited in the present invention.

In some specific examples of the present invention, as shown in fig. 1 and 2, the first conductive sheet 22 has a first conductive pin and a first fitting groove 224, the second conductive sheet 23 has a second conductive pin 233 and a second fitting groove 234, the first resistive pin 21a is fitted in the first fitting groove 224 and connected to the first conductive pin, and the second resistive pin 21b is fitted in the second fitting groove 234 and connected to the second conductive pin 233. Specifically, the first conductive sheet 22 and the second conductive sheet 23 are symmetrically disposed about the central axis of the resistor 21, the first conductive pin is bent to a side away from the resistor 21 to define a first fitting groove 224 on the first conductive sheet 22, the second conductive pin 233 is bent to a side away from the resistor 21 to define a second fitting groove 234 on the second conductive sheet 23, the first resistor pin 21a extends into the first fitting groove 224 to be connected with the first conductive pin, and the second resistor pin 21b extends into the second fitting groove 234 to be connected with the second conductive pin 233.

Further, the first conductive pin is bent downward and parallel to the central axis of the switching part 10, and the second conductive pin 233 is bent downward and parallel to the central axis of the switching part 10. Specifically, the first conductive pin and the second conductive pin 233 are respectively bent downward in a direction away from the resistor 21, in the vertical direction, the height of the upper edge of the first conductive pin is not higher than the height of the upper edge of the first conductive sheet 22, the height of the lower edge of the first conductive pin is not lower than the height of the lower edge of the first conductive sheet 22, the height of the upper edge of the second conductive pin 233 is higher than the height of the upper edge of the second conductive sheet 23, and the height of the lower edge of the second conductive pin 233 is not lower than the height of the lower edge of the second conductive sheet 23, so that the space occupied by the first conductive pin and the second conductive pin 233 is smaller and the structural layout is reasonable.

Preferably, the first resistor pin 21a and the first conductive pin and the first resistor pin 21a and the second conductive pin 233 can be connected in a welding manner, and the first resistor pin 21a and the second resistor pin 21b are respectively connected with the positive electrode and the negative electrode of the closed circuit through wires, so that the connection between the resistor pin 21 and the conductive sheet is convenient, and the connection effect is good.

According to some embodiments of the present invention, as shown in fig. 3, the moving part 20 further includes a fixing base 24. The resistor 21, the first conductive sheet 22 and the second conductive sheet 23 are respectively mounted on the fixing base 24 and keep relative positions through the fixing base 24, and the inner elastic member 30 is disposed in the fixing base 24 and two ends of the inner elastic member are respectively abutted against the fixing base 24 and the conductive member 11.

Specifically, the fixing base 24 is provided with a first slot (not shown in the drawing) and a second slot (not shown in the drawing) penetrating the fixing base 24 in the vertical direction, the first slot and the second slot are symmetrically arranged about the central axis of the fixing base 24, the first conductive sheet 22 extends into the first slot from the lower side of the fixing base 24, the first conductive pin is bent downwards and attached to the side wall of the fixing base 24, the second conductive sheet 23 extends into the second slot from the lower side of the fixing base 24, the second conductive pin 233 is bent downwards and attached to the side wall of the fixing base 24, the upper surface of the first holding claw 221 and the upper surface of the second holding claw 231 are both attached to the lower end surface of the fixing base 24, and the resistor 21 is fixed on the upper side of the fixing base 24.

Alternatively, as shown in fig. 5, the holder 24 has a mounting groove 241, the mounting groove 241 is formed by downwardly recessing an upper surface of the holder 24, and the resistor 21 is mounted to the mounting groove 241. Specifically, at least a portion of the resistor 21 is fitted in the mounting groove 241, and the upper surface of the resistor 21 is flush with the upper surface of the fixing base 24, and the first resistor pin 21a and the second resistor pin 21b extend from the mounting groove 241 and are connected to the first conductive pin and the second conductive pin 233, respectively. Thus, the fixing effect of the resistor 21 and the fixing base 24 is good.

Further, with continued reference to the embodiment shown in fig. 5, the fixing base 24 has a receiving cavity 242, the receiving cavity 242 is opened downward, the inner elastic member 30 is disposed in the receiving cavity 242, the upper end of the inner elastic member 30 abuts against the top wall of the receiving cavity 242, and the lower end of the inner elastic member 30 abuts against the upper surface of the conductive member 11. Specifically, the accommodating cavity 242 is located below the mounting groove 241, the top wall of the accommodating cavity 242 is formed with a stop surface, the upper end of the inner elastic member 30 is stopped against the stop surface, the lower end of the inner elastic member 30 is stopped against the conductive part 111, the conductive part 111 is located in the accommodating cavity 242 and compresses the inner elastic member 30 in the accommodating cavity 242, and the conductive part 111 is pressed against the first holding claw 221 and the second holding claw 231 by the inner elastic member 30. Thus, when the inner pan 200 is not placed in the inner pan detecting device 100, the moving portion 20 is always maintained at the first position with respect to the switching portion 10.

Preferably, the inner elastic member 30 is a spring, and since the cross-sectional area of the abutting groove 111a is smaller than the cross-sectional area of the top wall of the accommodating chamber 242, the cross-sectional area of the inner elastic member 30 is suitably arranged to gradually increase from bottom to top.

According to some embodiments of the present invention, as shown in fig. 3, the moving portion 20 further includes a limiting member 25 and a top cover 26, the limiting member 25 is sleeved on the outer side of the fixing base 24, the limiting member 25 is provided with a guiding hole 251a, the switching portion 10 is movably arranged through the guiding hole 251a, the top cover 26 is assembled on top of the limiting member 25, the upper end of the fixing base 24 abuts against the top cover 26, and the lower end abuts against the bottom wall of the limiting member 25.

Specifically, the limiting member 25 includes a bottom plate 251, a first extending portion 252 and a second extending portion 253, the guiding hole 251a is formed in the bottom plate 251, the first extending portion 252 and the second extending portion 253 extend upwards from edges of the bottom plate 251, the first extending portion 252 and the second extending portion 253 are symmetrically disposed with respect to the bottom plate 251, the limiting member 25 is sleeved outside the fixing seat 24, a lower end face of the fixing seat 24 is abutted against an upper surface of the bottom plate 251, the insulating member 12 extends into the accommodating cavity 242 through the guiding hole 251a and is movable relative to the guiding hole 251a, the upper end faces of the first extending portion 252 and the second extending portion 253 are flush with an upper end face of the fixing seat 24 and an upper surface of the resistor 21, the top cover 26 is assembled at the top of the limiting member 25, and the upper surface of the resistor 21 is attached to a lower surface of the top cover 26.

Further, as shown in fig. 3 and 5, the moving part 20 further includes a sleeve 27, the sleeve 27 is sleeved on the limiting member 25, the upper end of the sleeve 27, the upper end of the limiting member 25 and the top cover 26 are assembled with each other, and the sleeve 27 is adapted to be movably mounted on the carrier 50 of the inner pot detecting device 100. Specifically, the upper edge of the limiting member 25 is provided with an assembly edge 254 extending outwards in the horizontal direction, the upper edge of the sleeve 27 extends upwards and outwards, the upper edge of the limiting member 25 abuts against the inner side surface of the upper edge of the sleeve 27, the peripheral edge of the top cover 26 extends downwards and inwards, the top cover 26 covers the upper side of the limiting member 25, and the assembly edge 254 is pressed on the inner side surface of the upper edge of the sleeve 27, so that the upper end of the sleeve 27, the upper end of the limiting member 25 and the top cover 26 are assembled into a whole, and the sleeve 27 can play a role in protecting and insulating internal parts.

According to some embodiments of the present invention, as shown in fig. 3 and 5, the inner pot detection device 100 further includes an outer elastic member 40, the outer elastic member 40 is sleeved outside the sleeve 27, one end of the outer elastic member 40 abuts against the top cover 26, and the other end of the outer elastic member 40 abuts against the carrier 50. Specifically, the outer elastic member 40 is compressed between the top cover 26 and the carrier 50, the upper end of the outer elastic member 40 is abutted against the lower end surface of the top cover 26, the lower end of the outer elastic member 40 is abutted against the upper surface of the carrier 50, and a certain distance is kept between the sleeve 27 and the carrier 50 under the elastic action of the outer elastic member 40.

Optionally, the lower end of the sleeve 27 is provided with a limiting post 271 adapted to pass through a limiting hole 511 on the carrier 50, and the limiting post 271 is provided with an anti-drop portion 272 located below the carrier 50. Specifically, the carrier 50 has a mounting recess 51, the mounting recess 51 is formed by downwardly recessing an upper surface of the carrier 50, the sleeve 27 is assembled in the mounting recess 51, a plurality of limiting holes 511 penetrating through the bottom wall are provided at a bottom wall of the mounting recess 51, a plurality of limiting posts 271 corresponding to the plurality of limiting holes 511 one by one are provided at a lower end of the sleeve 27, the limiting posts 271 are disposed in the limiting holes 511 in a penetrating manner, each limiting post 271 is provided with a release preventing portion 272, and a cross-sectional shape of the release preventing portion 272 is adapted to be configured into a shape incapable of penetrating through the limiting holes 511, so that the release preventing portion 272 is tightly attached to a lower surface of the carrier 50 under the elastic force of the outer elastic member 40, and the sleeve 27 can be prevented from being released from the carrier 50. Preferably, the outer elastic member 40 is a spring, and the cross-sectional area of the outer elastic member 40 gradually decreases from bottom to top.

Further, as shown in fig. 5, the moving part 20 is spaced apart from the carrier 50 by a predetermined distance H only when the moving part 20 is under the elastic force of the outer elastic member 40. That is, when the inner pan 200 is not placed in the inner pan detecting device 100, the predetermined distance H between the switching part 10 and the carrier 50, that is, the predetermined distance H between the insulating member 12 and the bottom wall of the installation recess 51 is maintained by the elastic force of the inner elastic member 30 and the outer elastic member 40 in common.

According to some embodiments of the present invention, the maximum displacement L of the moving part 20 is greater than the predetermined distance H.

Specifically, in the process of placing the inner pan 200 on the inner pan detecting device 100, as shown in fig. 6 and 7, when the inner pan 200 is not in contact with the top cover 26, under the action of the elastic force of the outer elastic member 40 and the inner elastic member 30, the moving part 20 is located at a first position relative to the switching part 10, the distance between the inner pan detecting device 100 and the carrier 50 is a predetermined distance H between the switching part 10 and the carrier 50, the inner pan detecting device 100 moves downward under the action of the pressure of the inner pan 200 until the lower end surface of the switching part 10 abuts against the bottom wall of the mounting recess 51, as shown in fig. 8 and 9, the downward displacement of the inner pan detecting device 100 is a predetermined distance H, the moving part 20 keeps a stationary state relative to the switching part 10, and under the action of the pressure of the inner pan 200, namely the moving part 20 starts to move relative to the switching part 10 from the first position to the second position, as shown in fig. 10 and 11, the moving part 20 is located at the second position relative to the switching part 10, and the displacement H is the maximum distance L between the moving part 20 and the moving part and the carrier 50 is kept at the maximum displacement in the process of the predetermined distance H and the position. Through keeping the predetermined distance H between the inner pot detection device 100 and the carrier 50 when the outer elastic member 40 is arranged, the upper end surface of the inner pot detection device 100 can be kept at a certain height, so that when the inner pot detection device 100 is assembled on different pot body assemblies 1000, the inner pot 200 can be ensured to trigger the inner pot detection device 100 better, the probability that the inner pot 200 cannot trigger the inner pot detection device 100 due to assembly errors is reduced, and the sensitivity and applicability of the inner pot detection device 100 are improved.

Further, the predetermined distance H is greater than or equal to 1mm. Therefore, the matching effect of the inner pot 200 and the inner pot detection device 100 can be further improved, so that the normal operation of the inner pot detection device 100 is ensured.

In some embodiments of the invention, the resistor 21 is a thermistor 21. When the inner pot 200 is normally placed on the inner pot detection device 100 and the cooking appliance is electrified to work, since the moving part 20 is located at the first position relative to the switching part 10, that is to say, the first current branch is in the path, the resistor 21 generates heat in the working process, and the temperature of the resistor 21 can be controlled within a certain range by the thermal property of the thermistor 21, so that the occurrence of overheat of the resistor 21 caused by long-time electrifying can be avoided, further the aging of the inner pot detection device 100 caused by high temperature can be prevented, and the safety is further improved.

A pan body assembly 1000 according to an embodiment of the second aspect of the present invention is described below with reference to fig. 6 to 11.

As shown in fig. 6 to 11, the pot assembly 1000 according to the embodiment of the present invention includes an outer pot, an inner pot 200, and an inner pot detecting device 100 according to the embodiment of the first aspect of the present invention. Wherein, the inner pot detection device 100 is installed on the outer pot, and the inner pot 200 is arranged in the outer pot and presses the moving part 20 from the first position to the second position.

According to the pot body assembly 1000 of the embodiment of the second aspect of the present invention, by using the inner pot detection device 100 of the embodiment of the first aspect of the present invention, whether the inner pot 200 is placed in the outer pot or not can be effectively detected in the power-on state, so that potential safety hazards caused by power-on operation when the inner pot 200 is not placed by a user are eliminated, and safety is improved.

The cooking appliance according to the embodiment of the third aspect of the present invention includes the pot assembly 1000 according to the embodiment of the second aspect of the present invention.

According to the cooking appliance, the pot body assembly 1000 according to the second aspect of the invention has the advantages of high safety performance, good user experience and the like.

Other constructions and operations of the inner pot detecting device 100 and the pot assembly 1000 having the same and the cooking appliance according to the embodiment of the present invention are known to those skilled in the art, and will not be described in detail herein.

In the description of the present specification, reference to the terms "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. An inner pot detection device, characterized in that the inner pot detection device is adapted to be installed under an inner pot, the inner pot detection device comprising:

a switching portion including an insulating member and a conductive member;

A moving part which is movable between a first position and a second position relative to the switching part, the moving part having a first current branch and a second current branch, the first current branch being provided with a resistor;

When the moving part is positioned at the first position, the second current branch is connected through the conductive piece, and the resistor is in a short circuit state;

When the moving part is positioned at the second position, the second current branch is disconnected by the insulating piece, and the first current branch is connected with the first current branch channel; the inner elastic piece is arranged between the switching part and the moving part and is used for normally pushing the moving part to the first position;

the moving part includes:

The first conductive sheet and the second conductive sheet are respectively and movably matched with the switching part, the resistor is provided with a first resistor pin and a second resistor pin, the first resistor pin is connected with the first conductive sheet, and the second resistor pin is connected with the second conductive sheet;

Wherein a portion of the first conductive sheet, a portion of the second conductive sheet, the first resistive pin, and the second resistive pin constitute the first current branch, and another portion of the first conductive sheet and another portion of the second conductive sheet constitute the second current branch.

2. The in-pot detecting device according to claim 1, wherein the insulating member is configured in a column shape extending in an up-down direction, the conductive member is provided at an upper end of the insulating member and has a larger cross-sectional area than that of the insulating member, and the first conductive sheet and the second conductive sheet are respectively fitted to the insulating member so as to be movable up and down;

When the moving part is positioned at the first position, the first conductive sheet and the second conductive sheet are respectively contacted with the conductive piece;

when the moving part is positioned at the second position, the first conductive sheet and the second conductive sheet are separated from the conductive piece respectively.

3. The inner pot detection device according to claim 2, wherein the first conductive sheet has a first holding claw, the second conductive sheet has a second holding claw, and the first holding claw and the second holding claw are held around the outer periphery of the insulating member and are separated from each other.

4. The inner pot detection device according to claim 3, wherein the first holding claw is provided with a first conductive protrusion, and the second holding claw is provided with a second conductive protrusion;

When the moving part is positioned at the first position, the first conductive protrusion and the second conductive protrusion are respectively contacted with the lower surface of the conductive piece;

when the moving part is positioned at the second position, the first conductive protrusion and the second conductive protrusion are separated from the lower surface of the conductive piece respectively.

5. The in-pot detection device of claim 1, wherein the first conductive sheet has a first conductive pin and a first fitting groove, the second conductive sheet has a second conductive pin and a second fitting groove, the first resistive pin is fitted in the first fitting groove and connected to the first conductive pin, and the second resistive pin is fitted in the second fitting groove and connected to the second conductive pin.

6. The inner pot detection device according to claim 5, wherein the first conductive pin is bent downward and parallel to a central axis of the switching part;

the second conductive pin is bent downwards and is parallel to the central axis of the switching part.

7. The in-pot detection device according to claim 2, wherein the conductive member comprises:

The upper surface of the conductive part is provided with a stopping groove, and the lower end of the inner elastic piece is matched with the stopping groove;

The connecting part is connected to the lower surface of the conductive part, the upper end surface of the insulating piece is provided with a mounting hole, and the connecting part is inserted into the mounting hole.

8. The inner pot detection device according to any one of claims 1 to 7, wherein the moving part further comprises:

the resistor, the first conducting strip and the second conducting strip are respectively installed in the fixing base and keep relative positions through the fixing base, and the inner elastic piece is arranged in the fixing base, and two ends of the inner elastic piece are respectively abutted to the fixing base and the conducting piece.

9. The inner pot detecting device according to claim 8, wherein the fixing base has a mounting groove formed by a downward depression of an upper surface of the fixing base, and the resistor is mounted to the mounting groove.

10. The inner pot detection device according to claim 8, wherein the fixing base is provided with a containing cavity, the containing cavity is opened downwards, the inner elastic piece is arranged in the containing cavity, the upper end of the inner elastic piece is abutted against the top wall of the containing cavity, and the lower end of the inner elastic piece is abutted against the upper surface of the conductive piece.

11. The in-pot detection device according to claim 8, wherein the moving part further comprises:

the limiting piece is sleeved on the outer side of the fixed seat, the limiting piece is provided with a guide hole, and the switching part is movably arranged in the guide hole in a penetrating mode;

the top cap, the top cap assemble in the top of locating part, the upper end of fixing base support in the top cap and the lower extreme support in the diapire of locating part.

12. The in-pot detection device according to claim 11, wherein the moving part further comprises:

the sleeve is sleeved on the outer side of the limiting piece, the upper end of the sleeve, the upper end of the limiting piece and the top cover are assembled with each other, and the sleeve is suitable for being movably installed on a carrier of the inner pot detection device.

13. The in-pot detection device of claim 12, further comprising:

The outer elastic piece is sleeved on the outer side of the sleeve, one end of the outer elastic piece is abutted against the top cover, and the other end of the outer elastic piece is abutted against the carrier.

14. The inner pot detecting device according to claim 13, wherein the switching part is spaced apart from the carrier by a predetermined distance only when the moving part is under the elastic force of the outer elastic member.

15. The in-pot detection device of claim 14, wherein the predetermined distance is greater than or equal to 1mm.

16. The inner pot detection device according to claim 14, wherein a maximum displacement of the moving part is greater than the predetermined distance.

17. The inner pot detection device according to claim 13, wherein a limiting post adapted to pass through the limiting hole in the carrier is arranged at the lower end of the sleeve, and an anti-falling part positioned below the carrier is arranged on the limiting post.

18. The in-pot detection device of claim 1, wherein the resistor is a thermistor.

19. A pan body assembly, comprising:

An outer pot;

the inner pot detection device according to any one of claims 1-18, mounted to the outer pot;

the inner pot is arranged in the outer pot and presses the moving part from the first position to the second position.

20. A cooking appliance comprising a pan assembly according to claim 19.