CN210951419U - Electromagnetic oven - Google Patents

Abstract

The utility model provides an induction cooker, this induction cooker include drain pan (10) and panel (20) of setting on drain pan (10), panel (20) have the zone of heating (201) and operation area (202), a plurality of electrically conductive button signs (21) have on operation area (202), button signs (21) are located operation area (202) towards the one side of drain pan (10), display panel (30) have in drain pan (10), each button signs (21) are connected with the different contact electricity of display panel (30) respectively. The utility model provides an electromagnetism stove avoids the sign of touch button and the inaccurate problem of touch spring counterpoint, has reduced the defective rate of electromagnetism stove.

Description

Electromagnetic oven

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to an induction cooker.

Background

The induction cooker has the advantages of no use of open fire, safety, high efficiency, energy conservation, no oil smoke and the like, and is widely applied to household cooking.

The electromagnetic oven utilizes the electromagnetic coil to generate electromagnetic waves and utilizes the principle of electromagnetic induction to enable an iron pan and the like arranged on the electromagnetic oven to generate heat. When the induction cooker is used, a user operates the induction cooker through the touch keys on the induction cooker operation area board. The panel of the existing induction cooker is provided with key marks (such as hot pot marks, water boiling marks and the like) for touch in a silk screen printing mode, the induction cooker is provided with a display panel, and the marks of the touch keys and the corresponding positions of the display panel are electrically connected by adopting touch springs. When a user touches the key identification, the finger of the user enables the touch spring to form an induction capacitor, and the display panel identifies the induction capacitor, so that touch operation is realized.

However, when the induction cooker is installed, the marks of the touch keys and the touch springs are not aligned, so that the reject ratio of the induction cooker is increased.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one problem mentioned in the background art, the utility model provides an electromagnetism stove avoids the sign of touch button and the inaccurate problem of touch spring counterpoint, has reduced the defective rate of electromagnetism stove.

In order to achieve the above object, an embodiment of the present invention provides an induction cooker, including drain pan and the panel of setting on the drain pan, the panel has a zone of heating and an operation area, has a plurality of electrically conductive key identifications on the operation area, and the key identification is located the one side of operation area towards the drain pan, has the display panel in the drain pan, and each difference key identification is connected with the different contact electricity of display panel.

The embodiment of the utility model provides an electromagnetism stove, through set up the button sign in the one side of operation district orientation drain pan, the button sign has electric conductivity, the button sign is as the sign of different operation functions on the electromagnetism stove simultaneously, can also correspond the surperficial back of button sign on the user touch operation district, user's finger makes the induction capacitance that the button sign formed transmit to the contact that the display panel corresponds through the button sign on, the display panel can carry out corresponding control to the electromagnetism stove. The mark of the touch key in the prior art and the touch spring are combined into a whole, so that the problem that the mark of the touch key and the touch spring are not aligned accurately is avoided, and the reject ratio of the induction cooker is reduced. Meanwhile, a touch spring is not required to be arranged, so that the cost is saved, and the installation procedures of the induction cooker are reduced.

As an optional mode, the embodiment of the present invention provides an electromagnetic oven, wherein the key identification includes a key identification portion and a connection portion connected to the key identification portion, each connection portion is spaced from each other, and the connection portion is electrically connected to the contact of the display panel.

The embodiment of the utility model provides an electromagnetism stove, through flexible circuit board or metal elastic contact electricity each connecting portion and display panel, avoid other parts on the connecting portion contact display panel, guarantee the reliability of the contact connection that corresponds on connecting portion and the display panel simultaneously.

As an optional mode, in the electromagnetic oven provided in the embodiment of the present invention, each connection portion is electrically connected to the contact of the display panel through a flexible circuit board or a metal elastic contact.

The embodiment of the utility model provides an electromagnetism stove, button sign include interconnect's button identification portion and connecting portion, and button identification portion is used for providing the regional sign of touch for the user, and the panel region that user's finger touch button identification portion corresponds. The connecting part is used for connecting the key identification and the corresponding contact on the display panel and triggering the corresponding contact on the display panel through the connecting part.

As an optional mode, the embodiment of the present invention provides an electromagnetic oven, which further has an insulating layer for preventing signal interference on the operation area, and the insulating layer covers each connection portion on the operation area.

As an optional mode, the embodiment of the utility model provides an electromagnetism stove, insulating layer cover the region outside the button sign on the operation area.

The embodiment of the utility model provides an electromagnetism stove sets up the insulating layer through the region outside the button sign portion on the operation area to avoid signal mutual interference between each connecting portion.

As an optional mode, the embodiment of the present invention provides an electromagnetic oven, wherein the display panel has a plurality of indicator lights corresponding to the key identification portions. When the panel area that user's finger touch button identification portion corresponds, then transmit to connecting portion through button identification portion, trigger the display panel through connecting portion and go up and correspond the contact after, the pilot lamp that this button identification portion of control corresponds on the display panel is lighted, illuminates the button identification portion that corresponds, like this user alright with observe selected button identification portion clearly, increased visual effect.

As an optional mode, the embodiment of the utility model provides an electromagnetism stove, the insulating layer is black. The embodiment of the utility model provides an electromagnetism stove, the insulating layer plays when avoiding signal mutual interference between each connecting portion, can also carry out the shading, has improved the indicating effect of pilot lamp.

As an optional mode, the embodiment of the utility model provides an electromagnetism stove, the material of insulating layer is insulating printing ink or insulating paint, perhaps, the insulating layer is insulating paper or insulating piece, and the material of button sign is electrically conductive paint or conducting resin.

As an optional mode, the embodiment of the utility model provides an electromagnetism stove, button sign form through meltallizing or silk screen printing, spraying, and the insulating layer forms through meltallizing or spraying.

As an optional mode, the embodiment of the utility model provides an electromagnetism stove, the thickness scope of button sign is 0.1mm ~ 5.0mm, and the thickness scope of insulating layer is 0.1mm ~ 5.0 mm. The thickness of the insulating layer is set in the range, so that the insulating layer ensures the touch control sensitivity of the operation area of the induction cooker on the basis of avoiding the mutual interference of signals among the connecting parts, and an operator can effectively control the operation of the key identification part when touching the operation area, thereby realizing the operations of starting or shutting down, function switching, power regulation and the like of the induction cooker.

The structure of the present invention and other objects and advantages thereof will be more clearly understood from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an induction cooker according to an embodiment of the present invention;

fig. 2 is an exploded view of an induction cooker according to an embodiment of the present invention;

FIG. 3 is a bottom view of FIG. 2;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 5 is a partial schematic view of an operation area of a panel in an induction cooker according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of B-B in fig. 5.

Description of reference numerals:

10-a bottom shell;

20-a panel;

201-heating zone;

202-an operating area;

21-key identification;

211-key identification;

212-a connecting portion;

22-an insulating layer;

30-a display panel;

301-metal spring contacts;

and 40-upper cover.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, it is to be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, an indirect connection through an intermediary, a connection between two elements, or an interactive relationship between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 is a schematic structural diagram of an induction cooker according to an embodiment of the present invention; fig. 2 is an exploded view of an induction cooker according to an embodiment of the present invention; FIG. 3 is a bottom view of FIG. 2; FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1; fig. 5 is a partial schematic view of an operation area of a panel in an induction cooker according to an embodiment of the present invention; fig. 6 is a cross-sectional view of B-B in fig. 5. Referring to fig. 1 to 6, an embodiment of the present invention provides an induction cooker, including a bottom case 10 and a panel 20 disposed on the bottom case 10, where the panel 20 has a heating area 201 and an operating area 202, the operating area 202 has a plurality of conductive key marks 21 thereon, the key marks 21 are located on one side of the operating area 202 facing the bottom case 10, a display panel 30 is disposed in the bottom case 10, and each key mark 21 is electrically connected to a different contact of the display panel 30.

The induction cooker may further include an upper cover 40, the upper cover 40 is frame-shaped, the upper cover 40 is connected to the bottom case 10, and the panel 20 is embedded in the upper cover 40.

The material of the panel 20 may be microcrystalline glass, and the panel 20 is a microcrystalline glass panel. The glass ceramics are materials in which crystals are precipitated from glass at high temperatures, and have natural and soft texture. The microcrystalline glass has low water absorption, high strength, light weight, difficult water infiltration and convenient scrubbing.

Specifically, the heating area 201 is used for placing a pot and heating the pot. The operation area 202 is used for operating a specific function of the induction cooker. The user selects a corresponding function through the operation area 202. For example, the user performs operations such as normal function switching and power adjustment of the induction cooker in the operation area 202, such as turning on, turning off, steaming, boiling water, hot pot, and cooking.

In this embodiment, the operation area 202 has a plurality of electrically conductive key marks 21, each key mark 21 corresponds to a function on the operation area 202, and each electrically conductive key mark 21 is located on a side of the operation area 202 facing the bottom chassis 10 (i.e. each electrically conductive key mark 21 is located on an inner surface of the operation area 202), each electrically conductive key mark 21 corresponds to a contact on the display panel 30 in the bottom chassis 10, and each key mark 21 is electrically connected to a contact on the display panel 30.

Wherein each key identification 21 corresponds to a contact of a different function on the display panel 30. The key identifier 21 may include a text identifier or a pattern identifier of a certain function, or include a text identifier and a pattern identifier of a certain function. In a specific implementation, the shape of each key identifier 21 may be circular, rectangular, or other shapes.

Specifically, each of the key marks 21 has conductivity, and the function of each of the key marks 21 is the same as that of a touch spring. That is, when the user touches the opposite side of the key identifier 21 on the operation area 202 of the panel 20 (i.e. the outer surface of the operation area 202), the finger of the user forms an inductive capacitor on the key identifier 21, since the conductive key identifier 21 is electrically connected to the display panel 30, the inductive capacitor is transmitted to the corresponding contact of the display panel 30 through the key identifier 21, the contact on the display panel 30 is connected to the processing chip in the display panel 30, and the processing chip triggers the different contacts, so that the processing chip can correspondingly control the induction cooker.

The panel 20 may be a transparent panel, or a portion of the panel 20 corresponding to the operation area 202 is transparent, or a region of the panel 20 corresponding to each key identifier 21 is transparent. In this way, the user can see the key identifiers 21 located on the inner surface of the face plate 20 on the outer surface of the face plate 20, thereby distinguishing the key identifiers 21 of different functions.

The embodiment of the utility model provides an electromagnetism stove, through set up button sign 21 in operation area 202 towards the one side of drain pan 10, button sign 21 has electric conductivity, button sign 21 is as the electromagnetism stove on the sign of different operation functions simultaneously, can also correspond button sign 21 on user touch operation area 202 after the surface, user's finger makes the induction capacitance that button sign 21 formed transmit to the contact that display panel 30 corresponds through button sign 21 on, display panel 30 can carry out corresponding control to the electromagnetism stove. The mark of the touch key in the prior art and the touch spring are combined into a whole, so that the problem that the mark of the touch key and the touch spring are not aligned accurately is avoided, and the reject ratio of the induction cooker is reduced. Meanwhile, a touch spring is not required to be arranged, so that the cost is saved, and the installation procedures of the induction cooker are reduced.

In the present embodiment, the operation area 202 has a plurality of key identifiers 21, each key identifier 21 has a different function, and each key identifier 21 is electrically connected to one contact on the display panel 30. The key marks 21 are separately arranged in the operation area 202, and the contacts on the display panel 30 are also separately arranged on the display panel 30, each key mark 21 is at a different distance from the corresponding contact of the key mark 21 on the display panel 30, and each key mark 21 requires a lead wire to lead it to the contact on the display panel 30.

Therefore, in some embodiments, the key identifier 21 includes a key identifier 211 and a connection part 212 connected to the key identifier 211, the connection parts 212 are spaced apart from each other, and the connection part 212 is electrically connected to the display panel 30.

Specifically, the key identifier 21 is divided into two parts, namely a key identifier 211 and a connecting part 212, when a user operates the display device, a finger of the user touches a region of the panel 20 corresponding to the key identifier 211, and then the finger is transmitted to the connecting part 212 through the key identifier 211, and a corresponding contact on the display panel 30 is triggered through the connecting part 212. The connection portion 212 functions to connect the key label 21 and a corresponding contact on the display panel 30.

In specific implementation, each key identification part 211 can be arranged in a rectangular array, so that the appearance of the induction cooker is more attractive. The connection portions 212 are spaced apart from each other, and the connection portions 212 do not cross each other, thereby preventing the connection portions 212 from interfering with each other.

The embodiment of the utility model provides an electromagnetism stove, key identification 21 include interconnect's key identification portion 211 and connecting portion 212, and key identification portion 211 is used for providing the regional sign of touch for the user, and the panel 20 that user's finger touch key identification portion 211 corresponds is regional. The connecting portion 212 is used to connect the key identifier 21 and the corresponding contact on the display panel 30, and the corresponding contact on the display panel 30 is activated through the connecting portion 212.

In this embodiment, the number of the key marks 21 is plural. To facilitate the display of the structure of the key identifier 21, fig. 3 to 6 only show the state diagram of one key identifier 21 on the panel 20.

Optionally, in the induction cooker provided by the embodiment of the present invention, each connection portion 212 is electrically connected to the display panel 30 through the flexible circuit board or the metal elastic contact 301.

Among them, a Flexible Printed Circuit Board (FPCB) is also called a "Flexible Board", and the Flexible circuit Board is a printed circuit made of a Flexible insulating base material. The flexible circuit board can be freely bent, wound and folded, can be randomly arranged according to the space layout requirement, and can move and stretch in a three-dimensional space, so that the integration of component assembly and wire connection is realized.

A plurality of components having different functions are arranged on the display panel 30, and for example, the display panel 30 may include other components such as an indicator lamp as well as contacts each corresponding to a different function. If the positions of the contacts on display panel 30 and connection portion 212 are slightly shifted due to manufacturing errors during the process, connection portion 212 may contact other members on display panel 30, or there may be a gap between connection portion 212 and the corresponding contact on display panel 30, and touch key indicator 211 may not communicate the corresponding contacts on display panel 30 and connection portion 212.

Therefore, in some embodiments, the flexible circuit board is aligned with the contacts on the display panel 30 and connected with the contacts on the display panel 30 by using the flexible circuit board or the metal elastic contacts 301 to connect the contacts on the display panel 30 with the connection portions 212, utilizing the bendability of the flexible circuit board. Thereby allowing the connection portion 212 to be connected to a corresponding contact on the display panel 30, preventing the connection portion 212 from contacting other components on the display panel 30, and simultaneously ensuring the reliability of the connection portion 212 to the corresponding contact on the display panel 30.

The metal elastic contact 301 may be disposed on a corresponding contact on the display panel 30, and the corresponding contact on the display panel 30 and the connection portion 212 are connected through the metal elastic contact 301, so as to prevent the connection portion 212 from contacting other components on the display panel 30, and simultaneously ensure the reliability of connection between the connection portion 212 and the corresponding contact on the display panel 30.

The embodiment of the utility model provides an electromagnetism stove, through flexible circuit board or metal elastic contact 301 electricity each connecting portion 212 and display panel 30, avoid connecting portion 212 to contact other parts on the display panel 30, guarantee the reliability of the contact connection that corresponds on connecting portion 212 and the display panel 30 simultaneously.

In this embodiment, the operating area 202 has a plurality of electrically conductive key identifiers 21, the key identifiers 21 include key identifiers 211 and connecting portions 212 connected to the key identifiers 211, and accordingly, the connecting portions 212 have a plurality of numbers, so as to avoid mutual interference of signals between the connecting portions 212, in some embodiments, an insulating layer 22 is disposed on the operating area 202 to avoid mutual interference of signals between the connecting portions 212.

In a possible implementation manner, the operation area 202 further has an insulating layer 22 for preventing signal interference thereon, and the insulating layer 22 covers each connection portion 212 on the operation area 202. The insulating layer 22 is disposed only on each connection portion 212, and the area covered by the insulating layer 22 may be slightly larger than the area of the connection portion 212 to avoid signal interference between the connection portions 212.

A first area where the key identifier 21 is disposed and a second area where the key identifier 21 is not disposed may be encircled on the operation area 202, and the insulating layer 22 is disposed in an area other than the key identifier 211 in the first area, that is, each connection portion 212 covers the insulating layer 22, so that the insulating layer 22 prevents signals between the connection portions 212 from interfering with each other. In a specific implementation, a portion of the connection portion 212, which is connected to the display panel 30, on the connection portion 212 may be exposed to ensure that the connection portion 212 is normally electrically connected to the display panel 30.

However, the above operation is complicated, and it is necessary to protect the second region and the key mark portion 211 when the insulating layer 22 is manufactured, which is inconvenient in manufacturing the insulating layer 22. If only the insulating layer 22 covers the region of the operation area 202 other than the key identification portion 211, only the key identification portion 211 needs to be protected when the insulating layer 22 is manufactured, which facilitates the manufacturing of the insulating layer 22.

On the basis of the above implementation, in another possible implementation, the insulating layer 22 covers an area of the operation region 202 other than the key identification portion 211.

Here, the user's finger touches the operation area 202 region of the panel 20 corresponding to the key identification portion 211, and then the finger is transmitted to the connection portion 212 through the key identification portion 211, and the corresponding contact on the display panel 30 is triggered through the connection portion 212, so that the insulating layer 22 is not disposed on the key identification portion 211. While ensuring that each connection portion 212 is provided with the insulating layer 22, the portions of the operation region 202 other than the key identification portion 211 are each provided with the insulating layer 22.

The insulating layer 22 covers the region of the operation area 202 other than the key identifier 211, that is, the connection portion 212 of the operation area 202 and the region of the operation area 202 where the key identifier 21 is not disposed, both cover the insulating layer 22, so as to avoid mutual interference of signals between the connection portions 212.

The embodiment of the utility model provides an electromagnetism stove sets up insulating layer 22 through the region outside button identification portion 211 on operation area 202 to avoid signal mutual interference between each connecting portion 212.

Optionally, the material of the insulating layer 22 may be insulating ink or insulating paint, and the insulating layer 22 may be insulating paper or an insulating sheet. When the insulating layer 22 is made of insulating ink or insulating paint, the insulating layer 22 may be formed by thermal spraying or spraying. When the material of the insulating layer 22 is insulating paper or an insulating sheet, the insulating layer 22 is adhered to the operating area 202.

Optionally, the thickness of the insulating layer 22 ranges from 0.1mm to 5.0 mm. That is, the thickness of the insulating layer 22 is greater than or equal to 0.1mm and less than or equal to 5.0 mm. The thickness of the insulating layer 22 is set within the range, so that the insulating layer 22 also ensures the touch control sensitivity of the operation area 202 of the induction cooker on the basis of ensuring that signals between the connecting parts 212 are prevented from interfering with each other, and an operator can effectively control the operation of the key identification part 211 when touching the operation area 202, thereby realizing the operations of starting or shutting down the induction cooker, switching functions, adjusting power and the like. Specifically, the thickness of the insulating layer 22 is too thin to avoid signal interference between the connecting portions 212. The thickness of the insulating layer 22 is too thick, so that a user cannot effectively control the key identification part 211 in the operation area 202, the sensitivity of the key identification part 211 in the operation area 202 is reduced, and the normal operations of starting or shutting down the induction cooker, switching functions, adjusting power and the like are further influenced.

In order to facilitate the user's finger to touch the area of the panel 20 corresponding to the key identifier 211, the user can clearly see the touched key identifier 211 and the un-touched key identifier 211. In the present embodiment, the display panel 30 has a plurality of indicator lamps (not shown) corresponding to the key identifiers 211. Wherein, the indicator light can be an LED light.

When the user's finger touches the area of the panel 20 corresponding to the key identification portion 211, the touch signal is transmitted to the connection portion 212 through the key identification portion 211, and after the connection portion 212 triggers the corresponding contact on the display panel 30, the display panel 30 controls the indicator light corresponding to the key identification portion 211 to illuminate the corresponding key identification portion 211, so that the user can clearly observe the selected key identification portion 211, and the visual effect is increased. Wherein, the colour of pilot lamp can be red, like this, and is more striking, is convenient for discern.

Optionally, the insulating layer 22 is black. The black insulating layer 22 plays a role of light shielding. When the indicator light corresponding to the key identification part 211 is on, the light of the indicator light is only transmitted to the area of the key identification part 211 opposite to the indicator light, and the indicating effect of the indicator light is improved.

The embodiment of the utility model provides an electromagnetism stove, insulating layer 22 play when avoiding signal mutual interference between each connecting portion 212, can also carry out the shading, have improved the indicating effect of pilot lamp.

Optionally, the embodiment of the utility model provides an electromagnetism stove, button sign 21's material is electrically conductive paint or conducting resin. The key mark 21 is formed by melting or silk-screen printing and spraying,

optionally, the embodiment of the utility model provides an induction cooker, key sign 21's thickness scope is 0.1mm ~ 5.0mm, and key sign 21's thickness is more than or equal to 0.1mm and is less than or equal to 5.0mm promptly. The thickness of the insulating layer 22 is set within the range, so that the touch control sensitivity of the operation area 202 of the induction cooker is ensured, and when an operator touches the operation area 202, the key identification part 211 can be effectively controlled to work, so that the operations of starting or shutting down the induction cooker, switching functions, adjusting power and the like are realized.

The embodiment of the utility model provides an electromagnetic oven panel 20's preparation mode can be for:

step one, dividing the microcrystalline glass into a heating area 201 and an operation area 202.

Step two, forming the key identification 21 on the operation area 202. The key identifier 21 includes a key identifier 211 and a connecting portion 212 connected to the key identifier 211. The key mark 21 may be made of conductive paint or conductive adhesive. The key mark 21 may be formed by thermal spraying, silk-screen printing, or spray coating. The thickness range of the key mark 21 is 0.1 mm-5.0 mm.

And step three, arranging an insulating layer 22 in the region of the operation area 202 except the key identification part 211. The material of the insulating layer 22 may be insulating ink, insulating paint, insulating paper or insulating sheet. The insulating layer 22 may be formed by spray or sputtering. The thickness of the insulating layer 22 ranges from 0.1mm to 5.0 mm.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. An induction cooker, comprising a bottom case (10) and a panel (20) arranged on the bottom case (10), wherein the panel (20) has a heating area (201) and an operation area (202), and is characterized in that the operation area (202) has a plurality of conductive key marks (21), the key marks (21) are located on one side of the operation area (202) facing the bottom case (10), a display panel (30) is arranged in the bottom case (10), and each key mark (21) is electrically connected with different contacts of the display panel (30) respectively.

2. The induction cooker according to claim 1, wherein said key mark (21) comprises a key mark portion (211) and connecting portions (212) connected to said key mark portion (211), said connecting portions (212) being spaced from each other, said connecting portions (212) being electrically connected to contacts of said display panel (30).

3. The induction cooking stove according to claim 2, characterized in that each of the connection portions (212) is electrically connected to a contact of the display panel (30) through a flexible circuit board or a metal elastic contact (301).

4. The induction cooking stove according to claim 2 or 3, characterized in that the operation area (202) is further provided with an insulating layer (22) for preventing signal interference, and the insulating layer (22) covers each connecting portion (212) on the operation area (202).

5. The induction hob according to claim 4, characterized in, that the insulation layer (22) covers the area on the operation area (202) outside the key identification (21).

6. The induction cooker according to claim 2 or 3, wherein said display panel (30) has a plurality of indicator lamps corresponding to said key identification portions (211).

7. The induction hob according to claim 5, characterized in, that the insulation layer (22) is black.

8. The induction cooker according to claim 4, characterized in that the key mark (21) is made of conductive paint or conductive adhesive;

the insulating layer (22) is made of insulating ink or insulating paint, or the insulating layer (22) is made of insulating paper or an insulating sheet.

9. The induction hob according to claim 4, characterized in, that the key identification (21) is formed by means of injection or screen printing, spraying, and the insulating layer (22) is formed by means of injection or spraying.

10. The induction cooker according to claim 4, wherein the thickness of the key mark (21) is in the range of 0.1mm to 5.0mm, and the thickness of the insulating layer (22) is in the range of 0.1mm to 5.0 mm.

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