CN215731445U

CN215731445U - Knob switch and cooking utensil

Info

Publication number: CN215731445U
Application number: CN202121291016.4U
Authority: CN
Inventors: 胡君文
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-02-01
Anticipated expiration: 2031-06-09

Abstract

The utility model provides a knob switch and a cooking appliance, and relates to the technical field of household appliances. The knob switch comprises a knob component (21), a display (22) and a circuit board (23), wherein the knob component (21) and the display (22) are both arranged on the circuit board (23) and are electrically connected with the circuit board (23); the display (22) is positioned in the inner cavity of the knob component (21), the knob component (21) is at least partially transparent, and light emitted by the display (22) is displayed through the knob component (21). The knob assembly can combine the knob and the display together, so that the space occupied by the knob and the display on a cooking appliance can be reduced, and the miniaturization and the elaboration design of the cooking appliance are facilitated; but also can reduce the number of parts, simplify the structure and be beneficial to improving the production efficiency of the cooking utensil.

Description

Knob switch and cooking utensil

Technical Field

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

Background

The cooking utensil is a common household appliance in a kitchen, can quickly heat food, is safe and convenient to use, becomes an indispensable part of daily life of people, and improves the life quality of people. Cooking appliances commonly used at present comprise electric ceramic ovens, induction cookers, electric kettles, electric rice cookers, frying and baking machines, electric chafing dishes and the like.

The existing cooking appliances generally have a plurality of cooking modes during cooking, such as cooking, frying, keeping warm, turning on/off, and the like. Different cooking modes correspond to different functional modules and functional parameters in the cooking appliance, and the adjustment and modification of the functional modules and functional parameters are usually realized by using knobs. Among the prior art, be provided with knob and display on cooking utensil's the shell body generally, when using, through rotating the knob to preset the angle, start different functional module or confirm different functional parameter to the culinary art mode of adjustment cooking utensil. The display is used for displaying the current cooking mode, functional parameters and the like of the cooking appliance, so that a user can conveniently and visually acquire the cooking mode of the cooking appliance, and the cooking mode can be regulated and controlled accordingly.

However, the knob and the display of the cooking device in the prior art not only occupy a relatively large space, but also have many parts and a complex structure, thereby being disadvantageous to the compact design of the cooking device and reducing the production efficiency of the cooking device.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the problems mentioned in the background art, the utility model provides a knob switch and a cooking appliance, which can combine a knob and a display together, thereby not only reducing the space occupied by the knob and the display on the cooking appliance, but also being beneficial to the miniaturization and the elaboration design of the cooking appliance; but also can reduce the number of parts, simplify the structure and be beneficial to improving the production efficiency of the cooking utensil.

In order to achieve the above purpose, the embodiments of the present disclosure provide the following technical solutions:

in a first aspect, the present invention provides a rotary switch, including a rotary assembly, a display and a circuit board, wherein the rotary assembly and the display are both disposed on the circuit board and electrically connected to the circuit board; the display is located in the inner cavity of the knob assembly, at least part of the knob assembly is light-transmitting, and light emitted by the display is displayed through the knob assembly.

The knob switch provided by the utility model comprises a knob component, a display and a circuit board, wherein the knob component and the display are arranged on the circuit board and are electrically connected with the circuit board. The display is arranged in the inner cavity of the knob assembly, at least part of the knob assembly is light-transmitting, and light emitted by the display can be displayed through the knob assembly so as to realize the purpose of combining the knob assembly and the display together. Therefore, on the basis of not influencing the regulation function of the knob assembly and the display function of the display, the occupied space of the knob assembly and the display on the cooking utensil can be reduced, and the miniaturization and the exquisite design of the cooking utensil are facilitated; and the number of parts of the cooking utensil can be reduced, the structure of the cooking utensil is simplified, and the improvement of the production efficiency of the cooking utensil is facilitated.

In an alternative implementation, the knob assembly includes an encoder, a knob sleeve, and a light-transmissive knob cover; the encoder comprises a fixed part and a rotating part, the fixed part is fixedly connected to the circuit board, and the rotating part is rotatably sleeved on the fixed part; the first end of the knob sleeve is detachably sleeved on the rotating part, and the light-transmitting knob cover is detachably covered on the second end of the knob sleeve; the display is displayed through the light-transmitting knob cover.

Through closing the telescopic second end of knob with printing opacity knob lid detachable lid to be convenient for change different printing opacity knob lids, with the appearance requirement and the demonstration requirement that satisfy cooking utensil. The first end of the knob sleeve is detachably sleeved on the rotating portion, so that the knob sleeve and the knob cover can be conveniently replaced together, and the appearance requirement and the display requirement of the cooking appliance are met.

In an optional implementation manner, a first clamping portion is arranged at the edge of the light-transmitting knob cover, a first matching portion is arranged on the inner side wall of the second end of the knob sleeve, and the first clamping portion and the first matching portion are matched in clamping.

Set up first block portion through the edge at printing opacity knob lid, set up first cooperation portion on the inside wall of knob telescopic second end, match the block with first block portion and first cooperation portion to in the same place knob lid and the detachable joint of knob sleeve, simple structure, easy dismounting.

In an alternative implementation, the first engaging portion includes a first buckle; the first matching part comprises a clamping protrusion and a stop block, and the stop block is arranged on at least one side of the clamping protrusion in the rotating direction of the knob sleeve; the first buckle is clamped with the clamping protrusion, and the stop block is arranged on at least one side of the first buckle and the clamping protrusion in the rotating direction of the knob sleeve.

The stop block is arranged on at least one side of the clamping protrusion along the rotating direction of the knob sleeve, and when the first clamping buckle is clamped with the clamping protrusion, the stop block is arranged on at least one side of the first clamping buckle and the clamping protrusion along the rotating direction of the knob sleeve, so that on one hand, the first clamping buckle and the clamping protrusion are prevented from being separated from being clamped due to the fact that the light-transmitting knob cover rotates relative to the knob sleeve, and the connection reliability of the light-transmitting knob cover and the knob sleeve is guaranteed; on the other hand, the stop block can play a certain guiding role, so that the light-transmitting knob cover and the knob sleeve can be quickly aligned and clamped.

In an alternative implementation, the light-transmissive knob cover includes a cover body portion and a sidewall portion, the sidewall portion being circumferentially connected to an edge of the cover body portion and extending toward a side adjacent to the circuit board; the side wall portion is provided with an avoiding notch, the first buckle is arranged in the avoiding notch, and the avoiding notch is arranged on at least one side of the first buckle in the rotating direction of the knob sleeve, and an accommodating space for accommodating the stop block is reserved.

Through setting up printing opacity knob lid including lid body portion and lateral wall portion to can improve the structural strength of printing opacity knob lid, guarantee the structural reliability of printing opacity knob lid. Have through setting up lateral wall portion and dodge the breach, first buckle sets up in dodging the breach, and dodges the breach and at one side at least of the telescopic direction of rotation of knob in the edge of first buckle, leaves the accommodation space of holding backstop piece to not only can further guarantee the reliability of being connected between printing opacity knob lid and the knob sleeve, can guarantee the accuracy of the mounted position of printing opacity knob lid moreover.

In an optional implementation manner, a limiting rib is further arranged on an inner side wall of the second end of the knob sleeve, and the limiting rib abuts against an end face of the side wall portion, which faces one end of the circuit board.

Through set up spacing muscle on the inside wall at the telescopic second end of knob, the terminal surface butt of the one end of the orientation circuit board of spacing muscle and lateral wall portion to stretch into the degree of depth to the knob sleeve to the printing opacity knob lid and carry on spacingly, thereby not only can guarantee the accuracy nature of printing opacity knob lid installation, can avoid the installation space of printing opacity knob lid extrusion display moreover.

In an alternative implementation, a surface of the light-transmissive knob cover facing away from the circuit board is flush with the second end surface of the knob sleeve.

One surface of the light-transmitting knob cover, which is far away from the circuit board, is flush with the end surface of the second end of the knob sleeve, so that on one hand, the attractiveness of the light-transmitting knob cover covering the knob sleeve can be ensured; on the other hand, when the user grasps the knob sleeve to rotate, oil stains on the fingers of the user can be prevented from permeating into a gap between the light-transmitting knob cover and the knob sleeve.

In an optional implementation manner, a second clamping portion is arranged on the knob sleeve, a second matching portion is arranged on the outer surface of the rotating portion, and the second clamping portion and the second matching portion are in matched clamping.

Through set up second block portion on the knob sleeve, set up second cooperation portion at the surface of rotation portion, second block portion and second cooperation portion match the block to be in the same place knob sleeve and rotation portion detachable joint, simple structure, easy dismounting.

In an alternative implementation, the second engaging portion includes a second catch disposed at an end of the first end of the knob sleeve; the second matching part comprises a clamping groove which is arranged at one end of the rotating part close to the circuit board; the second buckle is matched and clamped with the clamping groove.

The second buckle is matched and clamped with the clamping groove, so that on one hand, the clamping groove can limit the second buckle along the axial direction of the knob sleeve to prevent the knob sleeve from being separated from the rotating part along the axial direction of the knob sleeve; on the other hand, the draw-in groove can be spacing to the second buckle along the telescopic circumference of knob to on the rotation portion of moment of torsion that will exert the user on the knob sleeve transmits the encoder via second buckle and draw-in groove.

In an optional implementation manner, the second engaging portion further includes a positioning column, and the positioning column is disposed on an inner side wall of the knob sleeve; the second matching part also comprises a positioning groove which is arranged at one end of the rotating part, which is far away from the circuit board; the positioning column is accommodated in the positioning groove.

Through holding the reference column in the constant head tank, first aspect, reference column and constant head tank can play the effect of location and direction at the in-process that knob sleeve cover was established on the rotation portion to make knob sleeve and rotation portion can align fast and block. In the second aspect, the positioning groove can limit the positioning column along the axial direction of the knob sleeve to control the length of the knob sleeve sleeved on the rotating part, so that the accuracy of the knob sleeve installation can be guaranteed, and the extrusion of the installation space of the display can be avoided. The locating column can be spacing to the locating column along the telescopic circumference of knob to the constant torque that applys the user on the knob sleeve transmits to the rotation portion of encoder on via locating column and locating column, thereby guarantees the reliability of moment of torsion transmission.

In a second aspect, the present invention provides a cooking appliance comprising a housing and a rotary switch as described in any one of the above; the shell is provided with a knob hole, a circuit board of the knob switch is installed inside the shell, and a knob component of the knob switch extends out of the knob hole.

The cooking appliance provided by the utility model comprises a shell and a knob switch, wherein a knob hole is formed in the shell, a circuit board of the knob switch is arranged in the shell, and a knob component of the knob switch extends out through the knob hole, so that a user can conveniently regulate and control the cooking state of the cooking appliance by operating the knob component extending out of the knob hole.

The knob switch comprises a knob assembly, a display and a circuit board, wherein the knob assembly and the display are both arranged on the circuit board and electrically connected with the circuit board. The display is arranged in the inner cavity of the knob assembly, at least part of the knob assembly is light-transmitting, and light emitted by the display can be displayed through the knob assembly so as to realize the purpose of combining the knob assembly and the display together. Therefore, on the basis of not influencing the regulation function of the knob assembly and the display function of the display, the occupied space of the knob assembly and the display on the cooking utensil can be reduced, and the miniaturization and the exquisite design of the cooking utensil are facilitated; and the number of parts of the cooking utensil can be reduced, the structure of the cooking utensil is simplified, and the improvement of the production efficiency of the cooking utensil is facilitated.

In an optional implementation manner, a limiting bump is arranged on the outer surface of one end, close to the circuit board, of the knob assembly, and the limiting bump is located inside the shell and abuts against the edge of the knob hole.

The outer surface of one end, close to the circuit board, of the knob assembly is provided with the limiting convex block, the limiting convex block is abutted to the edge of the knob hole from the inside of the shell, the extending length of the knob assembly can be controlled, and the attractiveness of a cooking appliance is guaranteed.

In addition to the technical problems solved by the embodiments of the present invention, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions, further technical problems solved by the knob switch and the cooking appliance provided by the present invention, other technical features included in the technical solutions, and advantages brought by the technical features will be further described in detail in the detailed description.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 an exploded view of a rotary switch provided in accordance with an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a rotary switch provided in accordance with an embodiment of the present invention;

FIG. 3 is a schematic structural view of a light-transmissive knob cover and a knob sleeve of the knob switch according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a cooking appliance according to an embodiment of the present invention;

fig. 5 is an exploded view of a cooking appliance according to an embodiment of the present invention;

fig. 6 is a sectional view of a cooking appliance according to an embodiment of the present invention.

Description of reference numerals:

10-a housing;

11-knob hole;

20-a knob switch;

21-a knob assembly;

211-light transmissive knob cover;

2111-a cap portion;

2112-side wall portion;

2113-first catch;

212-knob sleeve;

2121-sticking;

2122-stop block;

2123-limiting rib;

2124-a second buckle;

2125-locating columns;

2126-limit bump;

213-an encoder;

2131-a fixed part;

2132-a rotating part;

2133-card slot;

2134-positioning grooves;

22-a display;

23-circuit board.

Detailed Description

Because cooking utensil's among the prior art knob and display separately set up usually to connect with the winding displacement, not only need occupy more space, the part is numerous moreover, the structure is complicated, thereby be unfavorable for cooking utensil's compact structure design, can reduce cooking utensil's production efficiency simultaneously. The knob assembly and the cooking appliance provided by the embodiment combine the knob and the display together, which can solve the above problems.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.

In the description of the present invention, it should be noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, an indirect connection through intervening media, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example one

FIG. 1 is an exploded view of a rotary switch provided in accordance with an embodiment of the present invention; FIG. 2 is a cross-sectional view of a rotary switch provided in accordance with an embodiment of the present invention; FIG. 3 is a schematic structural view of a light-transmissive knob cover and a knob sleeve of the knob switch according to an embodiment of the present invention; fig. 4 is a schematic structural diagram of a cooking appliance according to an embodiment of the present invention; fig. 5 is an exploded view of a cooking appliance according to an embodiment of the present invention; fig. 6 is a sectional view of a cooking appliance according to an embodiment of the present invention.

Referring to fig. 1 to 6, the present embodiment provides a rotary switch 20, and the rotary switch 20 includes a rotary knob assembly 21, a display 22, and a circuit board 23. The knob assembly 21 and the display 22 are disposed on the circuit board 23 and electrically connected to the circuit board 23, and the circuit board 23 supplies power to the knob assembly 21 and the display 22, and exchanges control commands with the knob assembly 21 and the display 22. The display 22 is located in the inner cavity of the knob assembly 21, the knob assembly 21 is at least partially transparent to light, and light emitted from the display 22 can be displayed through the knob assembly 21.

The display 22 may be a nixie tube, a transistor, an electronic component having a display function such as an indicator light, or the like. The knob assembly 21 may be transparent to the axial end surface so that the light emitted from the display 22 is displayed through the axial end surface of the knob assembly 21, and the knob assembly 21 may also be transparent to the circumferential side surface so that the light emitted from the display 22 is displayed through the circumferential side surface of the knob assembly 21, and may also be displayed through the axial end surface and the circumferential side surface of the knob assembly 21.

The rotary switch 20 provided by the present embodiment includes a rotary knob assembly 21, a display 22 and a circuit board 23, wherein the rotary knob assembly 21 and the display 22 are disposed on the circuit board 23 and electrically connected to the circuit board 23. By positioning the display 22 in the interior cavity of the knob assembly 21, the knob assembly 21 is at least partially transparent to light, and light emitted from the display 22 can be displayed through the knob assembly 21, so as to achieve the purpose of combining the knob assembly 21 and the display 22. Therefore, on the basis of not influencing the regulation function of the knob assembly 21 and the display function of the display 22, the occupied space of the knob assembly 21 and the display 22 on the cooking appliance can be reduced, and the miniaturization and the elaboration design of the cooking appliance are facilitated; and the number of parts of the cooking utensil can be reduced, the structure of the cooking utensil is simplified, and the improvement of the production efficiency of the cooking utensil is facilitated.

Optionally, the knob assembly 21 may include an encoder 213, a knob sleeve 212, and a light-transmissive knob cover 211, and illustratively, the knob sleeve 212 may be a transparent member, a translucent member, or an opaque member; the light-transmissive knob cover 211 may be a transparent member or a translucent member. The encoder 213 includes a fixing portion 2131 and a rotating portion 2132, the fixing portion 2131 is fixedly connected to the circuit board 23, the rotating portion 2132 is rotatably sleeved on the fixing portion 2131, and the rotating portion 2132 is rotatable relative to the fixing portion 2131. The first end of the knob sleeve 212 is detachably sleeved on the rotating part 2132, and the light-transmitting knob cover 211 is detachably covered on the second end of the knob sleeve 212; the display 22 is shown through the light transmissive knob cover 211. Illustratively, the center of the encoder 213 is provided with a through hole extending along the axial direction of the knob sleeve 212, and one end of the display 22 close to the circuit board 23 can be inserted into the through hole and fixedly connected and electrically connected with the circuit board 23.

The light-transmitting knob cover 211 is detachably covered at the second end of the knob sleeve 212, so that different light-transmitting knob covers 211 can be replaced conveniently, and the appearance requirement and the display requirement of the cooking appliance can be met. The first end of the knob sleeve 212 is detachably sleeved on the rotating part 2132, so that the knob sleeve 212 and the knob cover 211 can be conveniently replaced together, and the appearance requirement and the display requirement of the cooking appliance are met.

One possible application scenario is that the knob switch 20 may be assembled on a cooking appliance, and the knob sleeve 212 is rotated, the knob sleeve 212 may drive the rotating portion 2132 to rotate relative to the fixing portion 2131, so that the encoder 213 converts an angular displacement or a linear displacement into an electrical signal to transmit to the control module of the circuit board 23, and the control module of the circuit board 23 may control the operating state of the cooking appliance according to the received electrical signal.

In an alternative implementation manner, a first engaging portion may be disposed at an edge of the light-transmissive knob cover 211, and a first mating portion is disposed on an inner sidewall of the second end of the knob sleeve 212, and the first engaging portion and the first mating portion are engaged in a matching manner.

Set up first block portion through the edge at printing opacity knob lid 211, set up first cooperation portion on the inside wall of the second end of knob sleeve 212, match the block with first block portion and first cooperation portion to be in the same place printing opacity knob lid 211 and knob sleeve 212 detachable joint, simple structure, easy dismounting.

Specifically, the first engaging portion may include a first catch 2113; the first mating portion may include a snap protrusion 2121 and a stopper 2122, and the stopper 2122 is disposed on at least one side of the snap protrusion 2121 in a rotation direction of the knob sleeve 212. When first catch 2113 engages with catch 2121, stop 2122 is located on at least one side of first catch 2113 and catch 2121 in the direction of rotation of knob sleeve 212.

Illustratively, there may be one stop block 2122, and one stop block 2122 is disposed on either side of the snap boss 2121 in the rotational direction of the knob sleeve 212. When first catch 2113 engages with catch 2121, stop 2122 stops on either side of first catch 2113 and catch 2121 in the direction of rotation of knob sleeve 212. Alternatively, there may be two stopper blocks 2122, and the two stopper blocks 2122 are respectively disposed at both sides of the snap boss 2121 in the rotation direction of the knob sleeve 212. When the first catch 2113 is engaged with the catch 2121, the two stop blocks 2122 are respectively stopped at two sides of the first catch 2113 and the catch 2121 in the rotation direction of the knob sleeve 212.

By disposing the stopper 2122 on at least one side of the catch 2121 in the rotation direction of the knob sleeve 212, when the first catch 2113 is engaged with the catch 2121, the stopper 2122 is stopped on at least one side of the first catch 2113 and the catch 2121 in the rotation direction of the knob sleeve 212, on one hand, preventing the light-transmissive knob cover 211 from rotating relative to the knob sleeve 212 to cause the first catch 2113 and the catch 2121 to disengage, so as to ensure the reliability of the connection of the light-transmissive knob cover 211 and the knob sleeve 212; on the other hand, the stop block 2122 may serve as a guide for the light-transmissive knob cover 211 and the knob sleeve 212 to be quickly aligned and snapped together.

Optionally, the first engaging portion may include two or more first hooks 2113, and the two or more first hooks 2113 are arranged at equal intervals or unequal intervals along the edge of the light-transmissive knob cover 211. The first mating portion may include two or more protrusions 2121, the two or more protrusions 2121 are arranged on an inner sidewall of the knob sleeve 212 at equal or unequal intervals along a rotation direction of the knob sleeve 212, and each protrusion 2121 is provided with a stopper 2122 along at least one side of the rotation direction of the knob sleeve 212. Two or more first catches 2113 and two or more catches 2122 are engaged in a one-to-one correspondence.

Alternatively, the light-transmissive knob cover 211 may include a cover portion 2111 and a side wall portion 2112, the side wall portion 2112 being connected around the edge of the cover portion 2111 and extending toward the side near the circuit board 23. The side wall portion 2112 has an escape notch, the first catch 2113 is disposed in the escape notch, and the escape notch leaves a receiving space for the stopper 2122 at least on one side of the first catch 2113 in the rotation direction of the knob sleeve 212. It is understood that the number and the position of the accommodating spaces correspond to those of the stop blocks 2122, and for example, when the stop block 2122 blocks only one side of the first buckle 2113, the accommodating spaces may be reserved only on one side of the first buckle 2113 corresponding to the stop blocks 2122; when the stop block 2122 blocks two sides of the first buckle 2113, an accommodating space may be reserved on two sides of the first buckle 2113 corresponding to the stop block 2122.

By providing the light-transmissive knob cover 211 including the cover portion 2111 and the sidewall portion 2112, the structural strength of the light-transmissive knob cover 211 can be improved, and the structural reliability of the light-transmissive knob cover 211 is ensured. Through setting up that side wall portion 2112 has the avoidance breach, first buckle 2113 sets up in the avoidance breach, and the avoidance breach leaves the accommodation space of holding backstop 2122 in at least one side of first buckle 2113 along the direction of rotation of knob sleeve 212 to not only can further guarantee the reliability of being connected between printing opacity knob lid 211 and the knob sleeve 212, can guarantee the accuracy of the mounted position of printing opacity knob lid 211 moreover.

Optionally, a limiting rib 2123 is further disposed on an inner side wall of the second end of the knob sleeve 212, and the limiting rib 2123 abuts against an end surface of the side wall portion 2112 facing the circuit board 23. Illustratively, the limiting rib 2123 may include an annular limiting rib extending along and surrounding a circumference of the knob sleeve 212 in the rotation direction; and may also include a plurality of spacing rib segments arranged at equal or unequal intervals along the rotation direction of the knob sleeve 212.

Through set up spacing muscle 2123 on the inside wall at the second end of knob sleeve 212, the terminal surface butt of the one end of orientation circuit board 23 of spacing muscle 2123 and lateral wall portion 2112 to stretch into the degree of depth to knob sleeve 212 to the printing opacity knob lid 211 and carry on spacingly, thereby not only can guarantee the accuracy nature of printing opacity knob lid 211 installation, can avoid printing opacity knob lid 211 to extrude the installation space of display 22 moreover.

An alternative realization is that the side of the light-transmissive knob cover 211 facing away from the circuit board 23 is flush with the second end face of the knob sleeve 212. By arranging that the surface of the light-transmitting knob cover 211 departing from the circuit board 23 is flush with the end surface of the second end of the knob sleeve 212, on one hand, the attractiveness of the light-transmitting knob cover 211 covering the knob sleeve 212 can be ensured; on the other hand, when the user grasps the knob sleeve 212 to rotate, oil stains on the user's fingers can be prevented from infiltrating into the gap between the light-transmissive knob cover 211 and the knob sleeve 212.

Other alternative implementations also include that the side of the light-transmissive knob cover 211 facing away from the circuit board 23 may be lower than the second end face of the knob sleeve 212; alternatively, the side of the light-transmissive knob cover 211 facing away from the circuit board 23 may be higher than the end surface of the second end of the knob sleeve 212.

In another alternative implementation manner, a first engaging portion may be disposed at an edge of the light-transmissive knob cover 211, and a first mating portion may be disposed on an outer side wall of the second end of the knob sleeve 212, so that the first engaging portion and the first mating portion are engaged in a matching manner, and at this time, the first engaging portion of the light-transmissive knob cover 211 is wrapped on an outer surface of the second end of the knob sleeve 212. Of course, the light-transmitting knob cover 211 and the knob sleeve 212 may be connected by a threaded connection or other detachable connection methods, as long as the requirements of the present embodiment can be met, and the description is omitted here.

Optionally, a second engaging portion is disposed on the knob sleeve 212, a second matching portion is disposed on an outer surface of the rotating portion 2132, and the second engaging portion and the second matching portion are engaged in a matching manner.

Through set up second block portion on knob sleeve 212, set up second cooperation portion at the surface of rotation portion 2132, second block portion and second cooperation portion match the block to be in the same place knob sleeve 212 and rotation portion 2132 detachable block, simple structure, easy dismounting.

Specifically, the second engaging portion includes a second catch 2124, and the second catch 2124 is disposed at an end of the first end of the knob sleeve 212; the second matching part comprises a clamping groove 2133, and the clamping groove 2133 is arranged at one end of the rotating part 2132 close to the circuit board 23; the second buckle 2124 is engaged with the locking groove 2133 in a matching manner.

By matching and clamping the second buckle 2124 with the clamping groove 2133, on one hand, the clamping groove 2133 can limit the second buckle 2124 along the axial direction of the knob sleeve 212, so as to prevent the knob sleeve 212 from coming off from the rotating part 2132 along the axial direction of the knob sleeve 212; on the other hand, the catching groove 2133 may limit the second catch 2124 along the circumferential direction of the knob sleeve 212, so as to transmit the torque applied to the knob sleeve 212 by the user to the rotating portion 2132 of the encoder 213 via the second catch 2124 and the catching groove 2133.

Alternatively, the second engaging portion may include two or more second catches 2124, and the two or more second catches 2124 are arranged at the first end of the knob sleeve 212 at equal intervals or unequal intervals along the rotation direction of the knob sleeve 212. The second matching portion may include two or more card slots 2133, and the two or more card slots 2133 are arranged at an equal interval or at unequal intervals along the rotation direction of the rotating portion 2132 at one end of the rotating portion 2132 close to the circuit board 23. Two or more second hooks 2124 and two or more locking grooves 2133 are correspondingly engaged one by one.

Optionally, the second engaging portion further includes a positioning post 2125, and the positioning post 2125 is disposed on an inner sidewall of the knob sleeve 212; the second matching part further comprises a positioning groove 2134, and the positioning groove 2134 is arranged at one end of the rotating part 2132, which is far away from the circuit board 23; the positioning post 2125 is received in the positioning groove 2134.

By accommodating the positioning post 2125 in the positioning groove 2134, in the first aspect, the positioning post 2125 and the positioning groove 2134 can perform positioning and guiding functions in the process of sleeving the knob sleeve 212 on the rotating portion 2132, so that the knob sleeve 212 and the rotating portion 2132 can be aligned and clamped quickly. In a second aspect, the positioning slot 2134 may limit the positioning post 2125 along the axial direction of the knob sleeve 212 to control the length of the knob sleeve 212 sleeved on the rotating portion 2132, so as to not only ensure the accuracy of the installation of the knob sleeve 212, but also avoid the extrusion of the installation space of the display 22. In a third aspect, the positioning groove 2134 may limit the positioning post 2125 along the circumferential direction of the knob sleeve 212, so as to transmit the torque applied to the knob sleeve 212 by the user to the rotating portion 2132 of the encoder 213 through the positioning post 2125 and the positioning groove 2134, thereby ensuring the reliability of the torque transmission.

Optionally, the second engaging portion may further include two or more positioning posts 2125, and the two or more positioning posts 2125 are disposed on an inner side wall of the knob sleeve 212 at equal intervals or unequal intervals along the rotation direction of the knob sleeve 212. The second matching portion may further include two or more positioning grooves 2134, and the two or more positioning grooves 2134 are arranged at an equal interval or at unequal intervals along the rotation direction of the rotating portion 2132 at an end of the rotating portion 2132 away from the circuit board 23. The two or more positioning posts 2125 are correspondingly received in the two or more positioning slots 2134 one by one.

Example two

Fig. 4 is a schematic structural diagram of a cooking appliance according to an embodiment of the present invention; fig. 5 is an exploded view of a cooking appliance according to an embodiment of the present invention; fig. 6 is a sectional view of a cooking appliance according to an embodiment of the present invention.

Referring to fig. 4 to 6, the present embodiment provides a cooking appliance including a housing 10 and a rotary switch 20, on the basis of the first embodiment; the housing 10 is provided with a knob hole 11, a circuit board 23 of the knob switch 20 is mounted inside the housing 10, and a knob assembly 21 of the knob switch 20 protrudes through the knob hole 11.

The knob switch of this embodiment has the same structure as the knob switch of the first embodiment, and has the same or similar technical effects, and specific reference may be made to the first embodiment, and details are not described here.

The cooking appliance provided by the embodiment comprises a shell 10 and a knob switch 20, wherein a knob hole 11 is formed in the shell 10, a circuit board 23 of the knob switch 20 is installed inside the shell 10, and a knob assembly 21 of the knob switch 20 extends out through the knob hole 11, so that a user can control the cooking state of the cooking appliance by operating the knob assembly 21 extending out of the knob hole 11.

Optionally, the outer surface of the knob assembly 21 near one end of the circuit board 23 is provided with a limiting bump 2126, and the limiting bump 2126 is located inside the casing 10 and abuts against the edge of the knob hole 11. Illustratively, the limit protrusion 2126 may include an annular limit protrusion extending along and encircling a circumference of the rotation knob assembly 21; the knob assembly can also comprise a plurality of limiting lug sections which are arranged at equal intervals or unequal intervals along the rotating direction of the knob assembly.

The limit bump 2126 is disposed on the outer surface of the knob assembly 21 near one end of the circuit board 23, so that the limit bump 2126 abuts against the edge of the knob hole 11 from the inside of the housing 10, thereby controlling the extension length of the knob assembly 21 and ensuring the aesthetic property of the cooking appliance.

For example, the cooking appliance may be an electric ceramic oven, an induction cooker, an electric kettle, an electric rice cooker, a frying and baking machine, an electric oven, an electric chafing dish, or the like, which requires a knob switch.

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 still 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

1. The knob switch is characterized by comprising a knob component (21), a display (22) and a circuit board (23), wherein the knob component (21) and the display (22) are arranged on the circuit board (23) and are electrically connected with the circuit board (23);

the display (22) is located in an inner cavity of the knob assembly (21), the knob assembly (21) is at least partially light-transmitting, and light emitted by the display (22) is displayed through the knob assembly (21).

2. The rotary knob switch according to claim 1, wherein the rotary knob assembly (21) comprises an encoder (213), a rotary knob sleeve (212) and a light-transmissive rotary knob cover (211); the encoder (213) comprises a fixed part (2131) and a rotating part (2132), the fixed part (2131) is fixedly connected to the circuit board (23), and the rotating part (2132) is rotatably sleeved on the fixed part (2131);

the first end of the knob sleeve (212) is detachably sleeved on the rotating part (2132), and the light-transmitting knob cover (211) is detachably covered on the second end of the knob sleeve (212); the display (22) displays through the light-transmissive knob cover (211).

3. The rotary switch according to claim 2, wherein a first engaging portion is disposed on an edge of the light-transmissive knob cover (211), and a first engaging portion is disposed on an inner sidewall of the second end of the knob sleeve (212), and the first engaging portion are engaged with each other in a matching manner.

4. The rotary switch of claim 3, wherein the first catch portion comprises a first catch (2113); the first mating portion includes a snap protrusion (2121) and a stopper (2122), the stopper (2122) is disposed on at least one side of the snap protrusion (2121) in a rotation direction of the knob sleeve (212);

the first buckle (2113) is clamped with the clamping protrusion (2121), and the stop block (2122) is arranged on at least one side of the first buckle (2113) and the clamping protrusion (2121) along the rotation direction of the knob sleeve (212).

5. The rotary switch of claim 4, wherein the optically transparent knob cover (211) includes a cover portion (2111) and a sidewall portion (2112), the sidewall portion (2112) being circumferentially attached to an edge of the cover portion (2111) and extending toward a side adjacent to the circuit board (23);

the side wall portion (2112) is provided with an avoiding gap, the first buckle (2113) is arranged in the avoiding gap, and the avoiding gap is provided with an accommodating space for accommodating the stop block (2122) at least one side of the first buckle (2113) along the rotation direction of the knob sleeve (212).

6. The rotary switch according to claim 5, wherein a limiting rib (2123) is further disposed on an inner side wall of the second end of the rotary sleeve (212), and the limiting rib (2123) abuts against an end surface of the side wall portion (2112) facing one end of the circuit board (23).

7. The rotary switch according to claim 3, wherein a face of the light-transmissive rotary knob cover (211) facing away from the circuit board (23) is flush with a second end face of the rotary knob sleeve (212).

8. The rotary switch according to any one of claims 2-7, wherein the rotary sleeve (212) is provided with a second engaging portion, the outer surface of the rotating portion (2132) is provided with a second engaging portion, and the second engaging portion are engaged in a matching manner.

9. The rotary switch of claim 8, wherein the second catch comprises a second catch (2124), the second catch (2124) disposed at an end of the first end of the knob sleeve (212); the second matching part comprises a clamping groove (2133), and the clamping groove (2133) is arranged at one end, close to the circuit board (23), of the rotating part (2132);

the second buckle (2124) is matched and clamped with the clamping groove (2133).

10. The rotary switch of claim 8, wherein the second engaging portion further comprises a positioning post (2125), the positioning post (2125) being disposed on an inner sidewall of the rotary sleeve (212); the second matching part further comprises a positioning groove (2134), and the positioning groove (2134) is arranged at one end, deviating from the circuit board (23), of the rotating part (2132);

the positioning column (2125) is accommodated in the positioning groove (2134).

11. A cooking appliance, characterized by comprising a housing (10) and a rotary switch (20) as claimed in any one of claims 1-10; the improved structure is characterized in that a knob hole (11) is formed in the shell (10), a circuit board (23) of the knob switch (20) is installed inside the shell (10), and a knob component (21) of the knob switch (20) extends out of the knob hole (11).

12. The cooking appliance according to claim 11, wherein an outer surface of the knob assembly (21) near one end of the circuit board (23) is provided with a stopper bump (2126), the stopper bump (2126) is located inside the housing (10) and abuts against an edge of the knob hole (11).