CN215731420U - Key assembly and cooking utensil - Google Patents

Abstract

The utility model relates to the technical field of household appliances, in particular to a key assembly and a cooking appliance. Aims to solve the problems of short service life, low integration level and complex structure of the key of the existing cooking utensil. The utility model provides a key assembly which comprises a key shell, at least one key, an encoder and a tact switch, wherein an accommodating cavity is arranged in the key shell, the key is arranged in the accommodating cavity, the first end of the key is abutted against the tact switch, the second end of the key is exposed outside the key shell to form a pressing surface, and the tact switch is arranged on the encoder and is electrically connected with the encoder; by applying acting force to the pressing surface of a certain key, the key can transmit the force to the tact switch and the encoder only by slight displacement, so that the selection and the starting of the functional mode are realized; the adjustment of the power can be realized by rotating the key shell. The key assembly integrates function selection and power regulation, so that the service life is prolonged, the integration level is high, and the structure is simplified.

Description

Key assembly and cooking utensil

Technical Field

The utility model relates to the technical field of household appliances, in particular to a key assembly and a cooking appliance.

Background

The induction cooker becomes a widely used cooking utensil, has the advantages of quick heating, no open fire, safety, convenience and the like, and is favored and accepted by more and more consumers.

The most common operation mode of the cooking appliance is a key type, which is mainly divided into a touch key and a mechanical key. The touch key can penetrate through the insulating material shell to detect effective touch of a finger, a main control chip is arranged in the touch key, and a high-resolution touch detection module and a special signal processing circuit are integrated in the main control chip to ensure that the chip has sensitive automatic identification and tracking functions on environmental changes; the mechanical key comprises a keycap (PET elastic bulge) and a mechanical shaft (keyboard switch), wherein the keycap is bonded on the mechanical shaft, and the keyboard switch is triggered by applying acting force to the PET elastic bulge to enable the PET elastic bulge to generate large axial displacement.

However, the existing cooking appliance has short service life, low integration level and complex structure.

SUMMERY OF THE UTILITY MODEL

The utility model provides a key assembly and a cooking appliance, and aims to solve the problems that the conventional key of the cooking appliance is short in service life, low in integration level and complex in structure.

In order to achieve the above object, in a first aspect, the present invention provides a key assembly, including a key housing, an encoder, a tact switch and at least one key, wherein the tact switch is disposed on the encoder and electrically connected to the encoder;

the key shell is covered outside the encoder and the tact switch, the key shell is internally provided with an accommodating cavity, and the key is positioned in the accommodating cavity;

the first end of the key is connected with the light touch switch in an abutting mode, and the second end of the key is exposed outside the key shell and forms a pressing surface of the key.

The utility model provides a key assembly which comprises a key shell, at least one key, an encoder and a tact switch, wherein an accommodating cavity is arranged in the key shell, the key is arranged in the accommodating cavity, the first end of the key is abutted against the tact switch, the second end of the key is exposed outside the key shell to form a pressing surface, and the tact switch is arranged on the encoder and is electrically connected with the encoder; by applying acting force to the pressing surface of a certain key, the key can transmit the force to the tact switch and the encoder only by slight displacement, so that the selection and the starting of the functional mode are realized; the adjustment of the power can be realized by rotating the key shell. This button subassembly collects function selection and power regulation to act on an organic wholely, has avoided touch button's main control chip to be out of order easily and/or the PET elasticity swell of mechanical button to appear fatigue damage and function key and power regulation key mutually independent problem easily, has not only improved life, and the integrated level is high moreover, has simplified the structure.

In the above key assembly, optionally, there are a plurality of keys, a plurality of tact switches, and the plurality of tact switches and the plurality of keys are abutted in one-to-one correspondence.

By the arrangement, richer function menu options can be provided for the user; when a certain key is stressed, only the corresponding tact switch is triggered, so that the use reliability is improved; and the light touch switch can be triggered by only small displacement when each key is stressed.

In the above key assembly, optionally, a connecting assembly is disposed between the key housing and the encoder, and the key housing and the encoder are connected by the connecting assembly.

So set up, be favorable to improving the stability of connecting.

In the above key assembly, optionally, the connecting assembly includes a connecting piece and a connecting groove, the connecting piece is located at one side of the encoder close to the key casing, and the connecting groove is arranged in the key casing;

the connecting piece is installed in the connecting groove.

So set up, be favorable to realizing built-in of coupling assembling, simplified the structure, make the outward appearance of button subassembly more succinct pleasing to the eye simultaneously.

In the key assembly as described above, optionally, a plurality of keys are spaced apart along a circumferential direction of the connecting groove between the outer circumferential wall of the connecting groove and the inner wall of the key case.

So set up, be favorable to realizing the radial positioning along the button subassembly to a plurality of buttons, improve its stability can.

In the above key assembly, optionally, a plurality of partition plates are disposed between the outer peripheral wall of the connecting groove and the inner wall of the key housing, the partition plates are distributed at intervals along the outer periphery of the connecting groove, and an installation area is formed between two adjacent partition plates;

the plurality of keys are arranged in the plurality of mounting areas in a one-to-one correspondence manner.

So set up, be favorable to guaranteeing when exerting pressure to certain button, other buttons are not influenced, and then guarantee the reliability of operation.

In the key assembly, optionally, the connecting groove of the connecting assembly is disposed near the center of the key housing, and the key abuts against at least a part of the outer wall surface of the connecting groove.

So set up, be favorable to realizing radially fixing a plurality of buttons simultaneously, avoid it to take place radially to rock along the button subassembly.

In the above key assembly, optionally, the cross-sectional area of the key housing is gradually reduced from a side close to the encoder to a side away from the encoder, and the cross-sectional area of the key is gradually reduced.

So set up, can be so that form the circular conical surface cooperation between the two, be favorable to guaranteeing that the button can not follow the slip in the button casing along the direction that deviates from the encoder.

In the above key assembly, optionally, the cross-sectional areas of the key housings are equal from the side close to the encoder to the side far from the encoder, and the cross-sectional areas of the keys are equal.

So set up, be favorable to realizing the adaptation of button casing internal face and button periphery wall.

In the above key assembly, optionally, the keys are installed between two adjacent partition plates in an interference fit manner;

and/or an adhesive piece is arranged between the key and the outer wall surface of the connecting groove.

So set up, be favorable to guaranteeing that the button can not remove or follow the internal slippage of button casing along the direction that deviates from the encoder, guarantee the structural stability of button subassembly.

In the key assembly, optionally, one of the connecting members is provided, and the extending direction of the connecting groove in the connecting member is located on the central axis of the key case; so set up, be favorable to simplifying the structure.

Or, coupling assembling has a plurality ofly, and a plurality of coupling assembling's spread groove is the array and arranges in the button casing, connects through the connecting plate between the adjacent connecting piece.

The arrangement is favorable for realizing the key distribution mode of array distribution, and more operation modes can be provided for users.

In the above key assembly, optionally, a limiting assembly is disposed between the connecting member and the connecting groove, the limiting assembly includes a first limiting surface and a second limiting surface, the first limiting surface is located on the outer peripheral wall of the connecting member, and the second limiting surface is located on the inner wall surface of the connecting groove;

the first limiting surface is abutted against the second limiting surface.

So set up, can realize the circumference location between connecting piece and the spread groove, avoid taking place relative rotation between connecting piece and the spread groove, and then guarantee to realize the regulation of function through rotating the button casing.

In the above key assembly, optionally, the connecting member is provided with a stopping step, and the notch of the connecting groove abuts against the stopping step;

and/or, the outside cover of connecting piece is equipped with the stop part, and the division board is close to the one end butt stop part of encoder to the restriction button is deviate from the installing zone.

So set up, not only be favorable to guaranteeing to dabble the butt position relation between switch and the button, avoid unexpected collision trigger circuit, still be favorable to preventing that the button from deviating from the installing zone, improved key assembly's use reliability.

In the above key assembly, optionally, a side of the key housing away from the encoder is an open end, and the pressing surface of the key is exposed outside the key housing through the open end.

So set up, can be so that can be convenient and fast more when exerting pressure to the button.

In the above key assembly, optionally, a positioning element is disposed on one side of the connecting groove near the opening end, and the pressing surface of the key is flush with an end of the positioning element.

So set up, not only be favorable to realizing the radial positioning to the button, still be favorable to in time discovering whether the button is in unoperated state, be convenient for maintain it. Meanwhile, the cleaning dead angle can be reduced, and the appearance attractiveness and the neatness of the key assembly are improved.

In a second aspect, the utility model provides a cooking appliance, which comprises a shell and a key assembly, wherein a cavity is arranged in the shell, and a circuit board is arranged in the cavity;

the coder of the key assembly is electrically connected with the circuit board.

The utility model provides a cooking appliance, which comprises a shell and a key assembly, wherein the key assembly comprises a key shell, at least one key, an encoder and a tact switch, an accommodating cavity is arranged in the key shell, the key is arranged in the accommodating cavity, the first end of the key is abutted against the tact switch, the second end of the key is exposed outside the key shell to form a pressing surface, and the tact switch is arranged on the encoder and is electrically connected with the encoder; by applying acting force to the pressing surface of a certain key, the key can transmit the force to the tact switch and the encoder only by slight displacement, so that the selection and the starting of the functional mode are realized; the adjustment of the power can be realized by rotating the key shell. This button subassembly collects function selection and power regulation to act on an organic wholely, has avoided touch button's main control chip to be out of order easily and/or the PET elasticity swell of mechanical button to appear fatigue damage and function key and power regulation key mutually independent problem easily, has not only improved life, and the integrated level is high moreover, has simplified the structure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced 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 a key assembly according to an embodiment of the present invention;

fig. 2 is an exploded view of a key assembly according to an embodiment of the present invention from a first viewing angle;

fig. 3 is an exploded view of a key assembly from a second perspective according to an embodiment of the present invention;

fig. 4 is an exploded view of a key assembly from a third perspective according to an embodiment of the present invention;

FIG. 5 is an exploded perspective view of a key assembly (without a stopper) according to an embodiment of the present invention;

fig. 6 is a perspective view of a first viewing angle of a key assembly according to an embodiment of the present invention;

fig. 7 is a perspective view of a key assembly from a second perspective according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a positioning element of a key assembly according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a key assembly according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of an encoder and a tact switch of a key assembly according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a cooking appliance according to a second embodiment of the present invention;

fig. 12 is a perspective view of a cooking appliance according to a second embodiment of the present invention.

Description of reference numerals:

10-a key housing;

11-a partition plate;

20-key press;

21-pressing surface;

30-an encoder;

40-a tact switch;

50-a connecting assembly;

51-a connector;

52-connecting groove;

60-a limit component;

61-a first limit surface;

62-a second limiting surface;

70-a stop;

80-a positioning member;

81-a first positioning member;

82-a second positioning element;

100-a key assembly;

200-shell.

Detailed Description

The induction cooker becomes a widely used cooking utensil, has the advantages of quick heating, no open fire, safety, convenience and the like, and is favored and accepted by more and more consumers. The most common operation mode of the cooking appliance is a key type, which is mainly divided into a touch key and a mechanical key. The touch key can penetrate through the insulating material shell to detect effective touch of a finger, a main control chip is arranged in the touch key, and a high-resolution touch detection module and a special signal processing circuit are integrated in the main control chip to ensure that the chip has sensitive automatic identification and tracking functions on environmental changes; the mechanical key comprises a keycap (PET elastic bulge) and a mechanical shaft (keyboard switch), wherein the keycap is bonded on the mechanical shaft, and the keyboard switch is triggered by applying acting force to the PET elastic bulge to enable the PET elastic bulge to generate large axial displacement. However, the existing touch keys are easy to be stuck with vegetable soup or water and other substances at the operation part to cause the master control chip to be out of order; and fatigue damage easily appears in the PET elasticity swell that sets up on the mechanical button, and PET elasticity swell needs to cooperate the elastic component to use together and realize the operation that resets, and the function key and the power adjustment key of touch button and mechanical button are independent each other moreover. Therefore, the key of the existing cooking utensil has short service life, low integration level and complex structure.

Based on the technical problem, the key assembly and the cooking utensil provided by the utility model comprise a key shell, at least one key, an encoder and a tact switch, wherein the key shell is internally provided with an accommodating cavity, the key is arranged in the accommodating cavity, the first end of the key is abutted against the tact switch, the second end of the key is exposed outside the key shell to form a pressing surface, and the tact switch is arranged on the encoder and is electrically connected with the encoder; by applying acting force to the pressing surface of a certain key, the key can transmit the force to the tact switch and the encoder only by slight displacement, so that the selection and the starting of the functional mode are realized; the adjustment of the power can be realized by rotating the key shell. This button subassembly collects function selection and power regulation to act on an organic wholely, has avoided touch button's main control chip to be out of order easily and/or the PET elasticity swell of mechanical button to appear fatigue damage and function key and power regulation key mutually independent problem easily, has not only improved life, and the integrated level is high moreover, has simplified the structure.

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 accompanying 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 utility model. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example one

Fig. 1 is a schematic structural diagram of a key assembly according to an embodiment of the present invention. Fig. 2 is an exploded view of a key assembly according to an embodiment of the present invention from a first viewing angle. Fig. 3 is an exploded view of a key assembly from a second perspective according to an embodiment of the present invention. Fig. 4 is an exploded view of a key assembly from a third perspective according to an embodiment of the present invention. Fig. 5 is an exploded perspective view of a key assembly (without a stopper) according to an embodiment of the utility model. Fig. 6 is a perspective view of a first viewing angle of a key assembly according to an embodiment of the present invention. Fig. 7 is a perspective view of a key assembly from a second viewing angle according to an embodiment of the present invention. Fig. 8 is a schematic structural diagram of a positioning element of a key assembly according to an embodiment of the present invention. Fig. 9 is a schematic structural diagram of a key assembly according to an embodiment of the present invention. Fig. 10 is a schematic structural diagram of an encoder and a tact switch of a key assembly according to an embodiment of the present invention.

As shown in fig. 1-10, the present invention provides a key assembly, which includes a key housing 10, an encoder 30, a tact switch 40 and at least one key 20, wherein the tact switch 40 is disposed on the encoder 30 and electrically connected to the encoder 30; the key shell 10 covers the encoder 30 and the light touch switch 40, the key shell 10 has a containing cavity inside, and the key 20 is located in the containing cavity; a first end of the key 20 abuts against the tact switch 40, and a second end of the key 20 is exposed to the outside of the key case 10 and forms the pressing surface 21 of the key 20.

It should be noted that each key 20 corresponds to a function selection menu. The plurality of keys 20 together constitute a function selection menu of the cooking appliance, and the key case 10 constitutes a power or fire power adjustment knob of the cooking appliance.

The key assembly provided by the embodiment of the utility model comprises a key shell, at least one key, an encoder and a tact switch, wherein the key shell is internally provided with an accommodating cavity, the key is arranged in the accommodating cavity, the first end of the key is abutted against the tact switch, the second end of the key is exposed outside the key shell to form a pressing surface, and the tact switch is arranged on the encoder and is electrically connected with the encoder; by applying acting force to the pressing surface of a certain key, the key can transmit the force to the tact switch and the encoder only by slight displacement, so that the selection and the starting of the functional mode are realized; the adjustment of the power can be realized by rotating the key shell. This button subassembly collects function selection and power regulation to act on an organic wholely, has avoided touch button's main control chip to be out of order easily and/or the PET elasticity swell of mechanical button to appear fatigue damage and function key and power regulation key mutually independent problem easily, has not only improved life, and the integrated level is high moreover, has simplified the structure.

Further, there are a plurality of keys 20, a plurality of tact switches 40, and the plurality of tact switches 40 and the plurality of keys 20 are in one-to-one abutting contact.

It should be noted that by providing a plurality of keys 20, a richer menu option can be provided for the user, for example, the menu option can be a hot pot, a frying, a quick frying, a milk heating, a soup cooking, a stewing, a porridge cooking, etc.; by arranging the tact switches 40 corresponding to the plurality of keys 20 one by one, when a certain key 20 is stressed, only the tact switch 40 corresponding to the certain key is triggered, so that the use reliability is improved; by abutting the plurality of tact switches 40 and the plurality of keys 20 in a one-to-one correspondence manner, it can be realized that each key 20 can be triggered by only a small displacement when being stressed.

When the tact switch is used, the switch function is pressed towards the switch operation direction to be closed and switched on under the condition that the operation force is met (the operation force reaches a preset value), when the pressure is relieved, the switch is switched off, the internal structure is switched on and off by means of stress change of the metal elastic sheet, and when the tact switch is switched on, the tact switch can be accompanied with click sound. When a certain key 20 is pressed until a click sound is heard, only the tact switch 40 corresponding to the key 20 reaches a preset value to turn on the circuit.

Further, as shown in fig. 2, a connection assembly 50 is disposed between the key housing 10 and the encoder 30, and the key housing 10 and the encoder 30 are connected by the connection assembly 50.

It should be noted that, the connection assembly 50 is disposed between the key housing 10 and the encoder 30 to connect the two, which is beneficial to improving the stability of connection.

Further, as shown in fig. 4, the connecting assembly 50 includes a connecting member 51 and a connecting groove 52, the connecting member 51 is located at a side of the encoder 30 close to the key housing 10, and the connecting groove 52 is disposed in the key housing 10; the link 51 is installed in the link groove 52.

It should be noted that, the connecting element 51 is disposed on one side of the encoder 30 close to the key housing 10, the connecting groove 52 is disposed in the key housing 10, and the connecting element 51 is mounted in the connecting groove 52 to achieve connection, which is beneficial to implementing the built-in connection assembly 50, simplifying the structure, and making the appearance of the key assembly more concise and beautiful.

Further, as shown in fig. 4, between the outer peripheral wall of the coupling groove 52 and the inner wall of the key case 10, a plurality of keys 20 are spaced apart in the circumferential direction of the coupling groove 52.

It should be noted that, the plurality of keys 20 are circumferentially spaced between the outer peripheral wall of the connecting groove 52 and the inner wall of the key housing 10, which is beneficial to radially positioning the plurality of keys 20 along the key assembly, and improving the stability thereof.

Further, as shown in fig. 2 and 4, a plurality of partition plates 11 are disposed between the outer peripheral wall of the connecting groove 52 and the inner wall of the key case 10, the plurality of partition plates 11 are distributed at intervals along the outer periphery of the connecting groove 52, and a mounting area is formed between two adjacent partition plates 11; the plurality of keys 20 are disposed in the plurality of mounting areas in a one-to-one correspondence.

It should be noted that, a plurality of installation areas are formed by arranging the plurality of partition plates 11 between the outer peripheral wall of the connection groove 52 and the inner wall of the key housing 10, wherein the first end of the partition plate 11 is fixedly connected with the inner wall of the key housing 10, the second end of the partition plate 11 is fixedly connected with the outer peripheral wall of the connection groove 52, and one key 20 is placed in each installation area, which is beneficial to ensuring that when a certain key 20 is pressed, other keys 20 are not affected, thereby ensuring the reliability of operation.

Further, as shown in fig. 4, the coupling groove 52 of the coupling member 50 is disposed near the center of the key case 10, and the key 20 abuts against at least a part of the outer wall surface of the coupling groove 52.

It should be noted that, by disposing the connecting slot 52 of the connecting assembly 50 close to the center of the key casing 10, and abutting the key 20 against at least part of the outer wall surface of the connecting slot 52, it is beneficial to achieve the simultaneous radial positioning of the plurality of keys 20, and avoid radial shaking of the keys along the key assembly.

Further, the cross-sectional area of the key case 10 is gradually reduced and the cross-sectional area of the key 20 is gradually reduced from the side close to the encoder 30 to the side away from the encoder 30.

It should be noted that, through from the side close to the encoder 30 to the side far from the encoder 30, the cross-sectional areas of the key housing 10 and the key 20 are respectively gradually reduced, so that a conical surface fit is formed between the two, which is beneficial to ensuring that the key 20 does not slip from the key housing 10 along the direction far from the encoder 30.

Further, the cross-sectional area of the key case 10 is equal from the side close to the encoder 30 to the side away from the encoder 30, and the cross-sectional area of the keys 20 is equal.

It should be noted that, from the side close to the encoder 30 to the side far from the encoder 30, the cross-sectional areas of the key housings 10 are equal, and the cross-sectional areas of the keys 20 are equal, which is beneficial to realize the matching of the inner wall surface of the key housing 10 and the outer peripheral wall of the keys 20.

In an implementation manner, the key housing 10 may be a cylinder, the key housing 10 may also be a square cylinder or a polygonal cylinder, and the shape of the key 20 is adapted to the key housing 10, and in practical use, a user may select the shape according to needs, which is not limited in this embodiment.

Further, as shown in fig. 1, the key 20 is installed between two adjacent partition plates 11 in an interference fit manner; and/or, an adhesive member is arranged between the key 20 and the outer wall surface of the connecting groove 52.

Note that, by interference-fitting the key 20 and the partition plate 11; and/or, bonding the key 20 to the attachment slot 52 helps ensure that the key 20 does not move in a direction away from the encoder 30 or slide out of the key housing 10, ensuring structural stability of the key assembly. In addition, when the key 20 and the partition plate 11 are in interference fit, the key 2 can be slightly displaced in a direction close to the encoder 30 under the action of external force; when the key 20 is adhered to the coupling groove 52, the key 20 may be slightly displaced in a direction approaching the encoder 30 by an external force.

The setting of coupling assembling of this embodiment can decide the mode of arranging of a plurality of buttons, and this coupling assembling can have following two kinds of modes of setting:

as a first practical implementation manner, as shown in fig. 2, 3 and 4, the connecting assembly 50 further has one connecting slot 52 extending in the direction of the central axis of the key housing 10 in the connecting assembly 50. It should be noted that, by arranging the connecting assembly 50 as one, and the extending direction of the connecting slot 52 in the connecting assembly 50 is located on the central axis of the key housing 10, it is beneficial to simplify the structure. At this moment, the button all surrounds in coupling assembling's periphery, can realize the installation and the fixed of a plurality of buttons through a coupling assembling promptly, has effectively simplified button assembly's structure.

As a second practical implementation, the connecting assembly 50 has a plurality of connecting slots 52, the connecting slots 52 of the connecting assembly 50 are arranged in an array in the key housing 10, and adjacent connecting pieces 51 are connected by a connecting plate. It should be noted that, by arranging the connecting assembly 50 in multiple, and arranging the connecting slots 52 of the multiple connecting assemblies 50 in an array in the key housing 10, and connecting the adjacent connecting members 51 by the connecting plate, it is beneficial to implement the distribution mode of the keys 20 in the array distribution, and specifically, the connecting slots may be distributed in a row and column manner, such as a jiugong format, so as to provide more operation modes for the user. The arrangement can effectively improve the richness of the key assembly structure and improve the appearance attractiveness.

Further, as shown in fig. 3, 4, 5, and 8, a limiting component 60 is disposed between the connecting element 51 and the connecting groove 52, the limiting component 60 includes a first limiting surface 61 and a second limiting surface 62, the first limiting surface 61 is located on the outer peripheral wall of the connecting element 51, and the second limiting surface 62 is located on the inner wall surface of the connecting groove 52; the first limiting surface 61 abuts against the second limiting surface 62.

It should be noted that, by providing the limiting component 60 between the connecting element 51 and the connecting groove 52, the limiting component 60 includes the first limiting surface 61 located on the outer peripheral wall of the connecting element 51 and the second limiting surface 62 located on the inner wall surface of the connecting groove 52, so as to realize circumferential positioning between the connecting element 51 and the connecting groove 52, avoid relative rotation between the connecting element 51 and the connecting groove 52, and further ensure that the function can be adjusted by rotating the key housing 10.

Specifically, the connecting piece 51 is provided with a stop step position, and the notch of the connecting groove 52 abuts against the stop step; the structural stability of the key assembly is improved.

In an implementation, the connector 51 is externally sleeved with a stopper 70, and one end of the partition plate 11 close to the encoder 30 abuts against the stopper 70 to limit the key 20 from falling out of the installation area.

It should be noted that, the end of the partition board 11 close to the encoder 30 is abutted to the stopper 70 sleeved outside the connecting member 51, which is not only beneficial to ensuring the abutting position relationship between the tact switch 40 and the key 20, avoiding accidental collision of the trigger circuit, but also beneficial to preventing the key 20 from coming out of the installation area, and improving the use reliability of the key assembly.

Further, a side of the key housing 10 away from the encoder 30 is an open end, and the pressing surface 21 of the key 20 is exposed outside the key housing 10 through the open end.

It should be noted that, by providing an open end on the side of the key housing 10 away from the encoder 30 and exposing the pressing surface 21 of the key 20 outside the open end of the key housing 10, the pressing of the key 20 can be more convenient and faster. It is noted that "exposed" here means that it is visible from the outside of the key housing 10 of the key assembly and that the pressing surface 21 of the key 20 is accessible to the user's finger.

Further, a positioning member 80 is disposed on a side of the connecting groove 52 near the opening end, and the pressing surface 21 of the key 20 is flush with an end of the positioning member 80.

It should be noted that, the positioning element 80 is disposed on one side of the connecting groove 52 close to the opening end, and the pressing surface 21 of the key 20 is flush with the end of the positioning element 80, which is not only beneficial to radially positioning the key 20, but also beneficial to timely finding whether the key 20 is in a non-working state, so as to facilitate maintenance of the key. Meanwhile, the cleaning dead angle can be reduced, and the appearance attractiveness and the neatness of the key assembly are improved.

Specifically, the positioning element 80 includes a first positioning element 81 and a second positioning element 82, and the first positioning element 81 and the second positioning element 82 are disposed on one side of the positioning element 80 close to the encoder 30, so as to position the connecting element 51, thereby improving the structural stability of the key assembly.

Example two

Fig. 11 is a schematic structural diagram of a cooking appliance according to a second embodiment of the present invention. Fig. 12 is a perspective view of a cooking appliance according to a second embodiment of the present invention.

As shown in fig. 11 and 12, on the basis of the first embodiment, a second embodiment of the present invention provides a cooking appliance equipped with the key assembly of the first embodiment. The cooking appliance may be any one of an induction cooker, an electric ceramic cooker, an electric cooker, and an electric pressure cooker, which is not limited in this embodiment. The cooking appliance comprises a shell 200 and a key assembly 100, wherein the shell 200 is provided with a cavity in which a circuit board is arranged; encoder 30 of key assembly 100 is electrically connected to a circuit board.

Other technical features are the same as those of the first embodiment and can achieve the same technical effects, and are not described in detail herein. The utility model provides a cooking appliance, which comprises a shell and a key assembly, wherein the key assembly comprises a key shell, at least one key, an encoder and a tact switch, an accommodating cavity is arranged in the key shell, the key is arranged in the accommodating cavity, the first end of the key is abutted against the tact switch, the second end of the key is exposed outside the key shell to form a pressing surface, and the tact switch is arranged on the encoder and is electrically connected with the encoder; by applying acting force to the pressing surface of a certain key, the key can transmit the force to the tact switch and the encoder only by slight displacement, so that the selection and the starting of the functional mode are realized; the adjustment of the power can be realized by rotating the key shell. This button subassembly collects function selection and power regulation to act on an organic wholely, has avoided touch button's main control chip to be out of order easily and/or the PET elasticity swell of mechanical button to appear fatigue damage and function key and power regulation key mutually independent problem easily, has not only improved life, and the integrated level is high moreover, has simplified the structure.

In the description of the embodiments of the present invention, it should be understood that the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, an indirect connection through intervening media, a connection between two elements, or an interaction between two elements, unless expressly stated or limited otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. 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 in describing and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. 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.

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; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (16)

1. The key assembly is characterized by comprising a key shell (10), an encoder (30), a tact switch (40) and at least one key (20), wherein the tact switch (40) is arranged on the encoder (30) and is electrically connected with the encoder (30);

the key shell (10) is covered outside the encoder (30) and the tact switch (40), an accommodating cavity is formed inside the key shell (10), and the key (20) is located in the accommodating cavity;

the first end of the key (20) abuts against the tact switch (40), and the second end of the key (20) is exposed outside the key shell (10) and forms a pressing surface (21) of the key (20).

2. The key assembly of claim 1, wherein there are a plurality of said keys (20), a plurality of said tact switches (40), and a plurality of said tact switches (40) are abutted against a plurality of said keys (20) in a one-to-one correspondence.

3. A key assembly according to claim 2, wherein a connecting member (50) is provided between the key housing (10) and the encoder (30), the key housing (10) and the encoder (30) being connected by the connecting member (50).

4. A key assembly according to claim 3, wherein said connecting assembly (50) includes a connecting member (51) and a connecting groove (52), said connecting member (51) being located at a side of said encoder (30) adjacent to said key housing (10), said connecting groove (52) being provided in said key housing (10);

the coupling piece (51) is mounted in the coupling groove (52).

5. A key assembly according to claim 4, wherein a plurality of said keys (20) are spaced circumferentially of said attachment slot (52) between an outer peripheral wall of said attachment slot (52) and an inner wall of said key housing (10).

6. The key assembly according to claim 5, wherein a plurality of separation plates (11) are disposed between the peripheral wall of the connection groove (52) and the inner wall of the key housing (10), the separation plates (11) are spaced along the periphery of the connection groove (52), and a mounting area is formed between two adjacent separation plates (11);

the keys (20) are arranged in the installation areas in a one-to-one correspondence mode.

7. A key assembly according to claim 6, characterized in that said attachment groove (52) of said attachment assembly (50) is located near the center of said key housing (10) and said key (20) abuts at least part of the outer wall surface of said attachment groove (52).

8. The key assembly of claim 7, wherein the cross-sectional area of the key housing (10) is gradually reduced and the cross-sectional area of the key (20) is gradually reduced from a side close to the encoder (30) to a side far from the encoder (30).

9. A key assembly according to claim 7, characterized in that the cross-sectional area of said key housing (10) is equal and the cross-sectional area of said keys (20) is equal from the side close to said encoder (30) to the side far from said encoder (30).

10. A key assembly according to claim 8 or 9, wherein said keys (20) are interference-fitted between two adjacent said partitions (11);

and/or an adhesive piece is arranged between the key (20) and the outer wall surface of the connecting groove (52).

11. A key assembly according to any one of claims 4-9, characterized in that there is one of said connecting members (50), and that said connecting groove (52) in said connecting member (50) extends in a direction lying on the central axis of said key housing (10);

or, there are a plurality of coupling assembling (50), a plurality of coupling groove (52) of coupling assembling (50) are arranged in the button casing (10) is the array, connect through the connecting plate between the adjacent connecting piece (51).

12. The key assembly according to any one of claims 4-9, wherein a limiting member (60) is disposed between the connecting member (51) and the connecting groove (52), the limiting member (60) includes a first limiting surface (61) and a second limiting surface (62), the first limiting surface (61) is located on the outer peripheral wall of the connecting member (51), and the second limiting surface (62) is located on the inner wall surface of the connecting groove (52);

the first limiting surface (61) is abutted against the second limiting surface (62).

13. A key assembly according to any one of claims 6-9, characterized in that a stop step is provided on the connecting member (51), the notch of the connecting groove (52) abutting on the stop step;

and/or a stop part 70 is sleeved outside the connecting piece (51), one end of the separation plate (11) close to the encoder (30) abuts against the stop part (70) to limit the key (20) from falling out of the mounting area.

14. A key assembly according to any one of claims 1-9, characterized in that the side of the key housing (10) remote from the encoder (30) is an open end from which the pressing surface (21) of the key (20) is exposed outside the key housing (10).

15. A key assembly according to claim 14, wherein a side of the connecting groove (52) adjacent to the open end is provided with a positioning member (80), and the pressing surface (21) of the key (20) is flush with an end of the positioning member (80).

16. A cooking appliance comprising a housing (200) and the key assembly (100) of any of claims 1-15, the housing (200) having a cavity therein, a circuit board disposed within the cavity;

the encoder (30) of the key assembly (100) is electrically connected with the circuit board.

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