CN110989764A

CN110989764A - Knob, panel component and household appliance

Info

Publication number: CN110989764A
Application number: CN201911266772.9A
Authority: CN
Inventors: 王拜军; 郑小江
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-04-10

Abstract

The invention discloses a knob, a panel assembly and a household appliance. The knob includes a support, a display screen, and a wire. The supporting piece is formed with a wire limiting structure. The display screen is mounted on the support member. The wire is connected with the display screen, and the wire is arranged in the wire limiting structure in a penetrating mode so that the wire limiting structure limits the moving range of the wire relative to the supporting piece. Because wire limit structure can restrict the home range of wire for support piece for the home range of display screen installation behind support piece is certain, thereby can prevent that the winding phenomenon from appearing in the wire, does benefit to the knob equipment.

Description

Knob, panel component and household appliance

Technical Field

The invention relates to the technical field of electric appliances, in particular to a knob, a panel assembly and a household appliance.

Background

In related art, household appliances, such as microwave ovens, electric ovens, gas ranges, etc., are provided with knobs for users to operate. Wherein the knob is used for the adjustment of functions, time or power of the household appliance. In addition, the knob in the related art is further provided with a display screen for displaying related information when the knob is operated. However, in the related art, the wiring harness of the display screen is easily wound, which is not favorable for the assembly of the knob.

Disclosure of Invention

The invention provides a knob, a panel assembly and a household appliance.

A knob of an embodiment of the present invention includes:

the supporting piece is provided with a lead limiting structure;

a display screen mounted on the support; and

the wire is connected with the display screen and penetrates through the wire limiting structure, so that the wire limiting structure limits the moving range of the wire relative to the supporting piece.

In the knob of the above embodiment, because the wire limiting structure can limit the range of motion of the wire relative to the support member, the range of motion of the display screen after being installed on the support member is certain, thereby preventing the wire from winding and facilitating the assembly of the knob.

In some embodiments, the knob includes a circuit board having a wire passing hole, the wire limiting structure has a limiting opening, and the wire sequentially passes through the limiting opening and the wire passing hole.

In some embodiments, the limiting port is located at one end of the support member away from the display screen, the depth direction of the limiting port is consistent with the thickness direction of the display screen, and the limiting port is aligned with the wire passing hole.

In some embodiments, the support comprises a support wall on which the display screen is supported and an extension extending from the support wall in a direction away from the display screen;

the extension part forms the wire limit structure, and the limit port is located at one end of the extension part, which is far away from the display screen.

In some embodiments, the knob further includes a cover covering the display screen, the cover includes a top wall transparent to light and a side wall extending from an edge of the top wall, the top wall covers the display screen, and the side wall surrounds the display screen and is fixedly connected to the supporting member.

In some embodiments, the support member includes a support wall and a first connecting portion connecting a periphery of the support wall, the first connecting portion and the side wall cooperate to fixedly connect the support member with the side wall, and the display screen is supported on the support wall.

In some embodiments, the first connecting portion is formed with a latch, the side wall is formed with a slot matched with the latch, and the latch is clamped in the slot; or

The first connecting portion is formed with a clamping groove, the side wall is formed with a clamping block matched with the clamping groove, and the clamping block is clamped in the clamping groove.

In some embodiments, the display screen is formed with a first stop structure at a periphery thereof, and the support member is formed with a second stop structure, the first stop structure cooperating with the second stop structure to limit rotation of the display screen relative to the support member.

In some embodiments, the support comprises a support wall on which the display screen is supported and a flange connecting the periphery of the support wall;

the first limiting structure comprises a limiting convex part formed on the periphery of the display screen, the second limiting structure comprises a limiting groove formed on the flange, and the limiting convex part is contained in the limiting groove.

In some embodiments, the knob includes a control component, the control component includes a fixed portion and a rotating portion rotating relative to the fixed portion, the fixed portion is formed with a receiving hole, the support member is at least partially received in the receiving hole, the support member is movable in a depth direction of the receiving hole relative to the fixed portion, and the wire is sequentially inserted through the wire limiting structure and the fixed portion.

In some embodiments, the support member includes a support wall and a second connecting portion extending from the support wall in a direction away from the display screen, the display screen is supported on the support wall, and the second connecting portion is at least partially received in the receiving hole;

the second connecting part forms a first guide limiting structure, the fixing part is provided with a second guide limiting structure positioned in the accommodating hole, and the first guide limiting structure is matched with the second guide limiting structure to limit the moving range of the supporting part relative to the fixing part.

In some embodiments, the first guiding and limiting structure comprises a first limiting protrusion, the second guiding and limiting structure comprises a second limiting protrusion matched with the first limiting protrusion, and the first limiting protrusion and the second limiting protrusion are aligned in the depth direction of the accommodating hole.

In some embodiments, the fixing portion is formed with a guide groove communicating with the accommodating hole, the guide groove extending in a depth direction of the accommodating hole, the guide groove cooperating with the second stopper protrusion to guide the support member to move relative to the fixing portion in the depth direction of the accommodating hole.

In some embodiments, the knob includes a key disposed below the support, and the support is interfered with or separated from the key during the movement of the support relative to the fixing portion.

In some embodiments, the knob further includes a knob housing, the knob housing is sleeved outside the support and the control component, and the knob housing is fixedly connected to the rotating portion.

The panel assembly of the embodiment of the invention comprises a panel and the knob of any one of the above embodiments, wherein the knob is arranged on the panel.

Among the panel components of above-mentioned embodiment, because wire limit structure can restrict the home range of wire for support piece for the home range behind support piece is certain at the display screen installation, thereby can prevent that the winding phenomenon from appearing in the wire, does benefit to the knob equipment.

The household appliance comprises a main control board and the panel assembly, wherein the main control board is electrically connected with the panel assembly.

Among the domestic appliance of above-mentioned embodiment, because wire limit structure can restrict the home range of wire for support piece for the home range of display screen installation behind support piece is certain, thereby can prevent that the winding phenomenon from appearing in the wire, does benefit to the knob equipment.

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

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic plan view of a household appliance according to an embodiment of the present invention;

fig. 2 is another schematic plan view of a household appliance according to an embodiment of the present invention;

fig. 3 is a further schematic plan view of a household appliance according to an embodiment of the present invention;

FIG. 4 is a further schematic plan view of a household appliance in accordance with an embodiment of the present invention;

FIG. 5 is a schematic perspective view of a knob according to an embodiment of the present invention;

FIG. 6 is an exploded schematic view of a knob according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of a knob of an embodiment of the present invention in an exploded condition;

FIG. 8 is a schematic cross-sectional view of a knob according to an embodiment of the present invention;

FIG. 9 is a further cross-sectional schematic view of a knob according to an embodiment of the present invention;

FIG. 10 is a further cross-sectional schematic view of a knob according to an embodiment of the present invention;

FIG. 11 is an exploded schematic view of the housing, display screen and support member of an embodiment of the present invention;

FIG. 12 is a schematic structural view of a support member according to an embodiment of the present invention;

FIG. 13 is a schematic structural view of a knob housing according to an embodiment of the present invention;

FIG. 14 is a schematic structural view of a control unit according to an embodiment of the present invention;

FIG. 15 is a schematic cross-sectional view of a control component of an embodiment of the present invention;

FIG. 16 is an enlarged schematic view of portion I of FIG. 15;

FIG. 17 is a schematic structural diagram of a key of an embodiment of the present invention;

FIG. 18 is a schematic diagram of a circuit board configuration according to an embodiment of the present invention;

FIG. 19 is a schematic diagram of an application scenario of a knob according to an embodiment of the present invention;

FIG. 20 is a schematic diagram of another application scenario of a knob according to an embodiment of the present invention;

FIG. 21 is a schematic view of another application of the knob according to the embodiment of the present invention.

Description of the main element symbols:

the household appliance comprises a household appliance 1000, a main control panel 1001, a machine body 1002, a door body 1003 and a handle 1004;

panel assembly 100, panel 101;

the knob 10, the cover 11, the top wall 111, the side wall 112, the card slot 1121, the positioning post 1122, the display 12, the first limit structure 121, the limit protrusion 1211, the recess 122, the wire 123, the support 13, the support wall 131, the first connection portion 1311, the latch 1312, the second connection portion 1313, the first guide limit structure 1314, the first limit protrusion 1315, the extension portion 1316, the wire limit structure 1317, the limit opening 1318, the abutting portion 1319, the second limit structure 1320, the limit recess 1321, the flange 1322, the accommodating cavity 1323, the positioning hole 1324, the first mating portion 1325, the projection 1326, the knob housing 14, the opening 141, the window 142, the first connection structure 143, the fitting block 1431, the second mating portion 144, the guide protrusion 1441, the control component 15, the fixing portion 151, the mounting chamber 1511, the first abutting portion 1512, the accommodating hole 1513, the second guide limit structure, the second limit protrusion 1515, the guide groove 1516, and the third mating portion 1517, The mating groove 1518, the first pin 1519, the rotating portion 152, the second abutting portion 1521, the second connecting structure 1522, the mating groove 1523, the fourth mating portion 1524, the guiding groove 1525, the key 16, the body 161, the second pin 1611, the elastic contact 162, the circuit board 17, and the wire passing hole 171.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The disclosure herein provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

Referring to fig. 1 to 4, a knob 10 according to an embodiment of the present invention can be applied to a household appliance 1000 according to an embodiment of the present invention. The household appliance 1000 is, for example, a microwave oven, an induction cooker, a stereo, or the like. The household appliance 1000 may include a body 1002, a panel assembly 100, a main control panel 1001 and a door body 1003, wherein the main control panel 1001 is electrically connected to the panel assembly 100. The panel assembly 100 is mounted to the body 1002. Specifically, the panel assembly 100 may be connected to the body 1002 by screws.

Of course, in other embodiments, the panel assembly 100 may be connected to the body 1002 by bonding or clipping. The specific connection manner between the panel assembly 100 and the body 1002 is not limited herein.

Wherein the panel assembly 100 may include a panel 101 and a knob 10, in case that the home appliance 1000 is a microwave oven, the panel 101 may be used to mount the knob 10. In case the household appliance 1000 is an induction cooker, the panel 101 may be used to carry a pot while the knob 10 is installed. In the present embodiment, the knob 10 protrudes from the panel 101 for operation by a user.

Specifically, the panel 101 may be made of tempered glass, stainless steel or aluminum. Of course, the specific material of the panel 101 does not include only the three materials, and the specific material of the panel 101 may be set according to different situations. And are not limited herein.

Further, the main control board 1001 may be disposed on the panel assembly 100 and hidden by the panel assembly 100. The main control panel 1001 is used for controlling the operation of the household appliance 1000, and the main control panel 1001 is electrically connected with the knob 10. The household appliance 1000 can be operated through the knob 10 and the main control panel 1001, convenience and rapidness are achieved, and user experience is improved.

Specifically, the main control board 1001 may be a flexible circuit board, a printed circuit board, or other types of circuit boards. The specific type of the main control board 1001 is not limited herein.

In the present embodiment, the body 1002 has a substantially rectangular shape. The body 1002 defines a chamber (not shown). The door 1003 is rotatably mounted to the body 1002 to open or close the chamber. The panel assembly 100 and the door 1003 are located on the same side of the machine body 1002. Wherein the door 1003 may be provided with a handle 1004 for user operation. Of course, the body 1002 may not be only rectangular. The specific shape of the body 1002 can be set according to different situations. The specific shape of the body 1002 is not limited herein.

It should be noted that the number of the knobs 10 may be set according to specific situations, and the installation manner of the knobs 10 on the panel assembly 100 may be set according to specific situations. The panel assembly 100 defines a first mounting groove (not shown). The knob 10 is partially installed at the first installation groove. Meanwhile, the handle 1004 may be installed according to specific situations, and the door 1003 may not be provided with the handle 1004 (as shown in fig. 4).

For example, in the example shown in fig. 1, the number of the knobs 10 is one, and the knobs 10 are mounted to the upper end of the panel assembly 100. The handle 1004 is vertically mounted to the door body 1003. In the example shown in fig. 2, the number of the knobs 10 is two, and the two knobs 10 are provided at intervals. The handle 1004 is vertically mounted to the door body 1003. The two knobs 10 are located on the same side of the door 1003. In the example shown in fig. 3, the number of the knobs 10 is two, and the two knobs 10 are provided at intervals. The handle 1004 is transversely attached to the door 1003. In the example shown in fig. 4, the number of the knobs 10 is two, and the two knobs 10 are provided at intervals.

The body 1002 may be made of a metal material, for example, a light aluminum material, so that the body 1002 has a light weight. Thus, the weight of the household appliance 1000 can be reduced, and the user can conveniently carry the household appliance 1000. It is understood that the body 1002 may be made of light aluminum material. The specific material of the body 1002 can be selected according to different situations. The specific material of the body 1002 is not limited herein.

In the embodiment of the present invention, the home appliance 1000 is mainly exemplified as a microwave oven. In the embodiment shown in fig. 1 to 4, the household appliance 1000 is a microwave oven. The user opens the chamber through the door body 1003, then places the object to be heated in the chamber, then closes the chamber through the door body 1003, and then rotates the knob 10 to control the operation of the microwave oven, thereby heating the object to be heated in the chamber.

In the example shown in fig. 1 to 4, the panel assembly 100 and the door 1003 are arranged on the left and right sides, and in other embodiments, the position arrangement of the panel assembly 100 and the door 1003 may be in other cases. For example, in an example, the panel assembly 100 and the door 1003 are disposed up and down, or the panel assembly 100 is located above the door 1003, or the panel assembly 100 is located below the door 1003, which is not limited herein.

In this embodiment, the panel assembly 100 and the door body 1003 are located on the same side of the body 1002. In other embodiments, the panel assembly 100 and the door body 1003 may not be the same side of the body 1002. For example, in one example, the door 1003 is located on the front side of the body 1002, and the panel assembly 100 is located on the left side of the body 1002. For another example, in another example, the door 1003 is located at the front side of the machine body 1002, and the panel assembly 100 is located at the rear side of the machine body 1002. As can be seen from the above description, the positional relationship of the door 1003 of the panel assembly 100 has various conditions, and can be specifically designed according to different conditions. And are not limited herein.

Referring to fig. 5 to 8, in the present embodiment, the knob 10 may include a housing 11, a display 12, a support 13, a knob, a control unit 15, a key 16, and a circuit board 17. The cover 11 covers the display 12 and is connected to the support 13. The display screen 12 is mounted on a support 13. The support 13 is at least partially housed within the control part 15. The circuit board 17 is connected to the control section 15. The keys 16 are arranged on a circuit board 17. The knob is sleeved outside the support 13 and the control part 15.

Specifically, the cover 11 may be made of a transparent material. In this way, the cover 11 does not shield the display contents of the display 12. For example, the cover 11 may be made of organic glass. It will be appreciated that the cover 11 may be made of more than glass. The specific material of the cover 11 may be set according to different situations. For example, in other embodiments, the cover 11 may be made of transparent plastic. The specific material of the cover 11 is not limited herein.

Referring to fig. 9 to 11, further, the housing 11 includes a top wall 111 and a side wall 112. The top wall 111 has a light transmitting function, and the side walls 112 extend from edges of the top wall 111. The top wall 111 has a light transmitting function so that the contents of the display screen 12 can be displayed through the top wall 111.

The top wall 111 and the side wall 112 may be integrally formed or may be separately formed. The design may be designed according to different situations, and is not limited herein.

Specifically, the top wall 111 covers the display screen 12, and the side wall 112 surrounds the display screen 12 and is fixedly connected to the support 13. In this way, when the top wall 111 covers the display screen 12, the content of the display screen 12 can be displayed through the top wall 111, and the top wall 111 is prevented from blocking the display screen 12. The side wall 112 can surround the display screen 12 and be fixedly connected to the support 13. That is, the cover 11 can wrap the display 12, so that the situation that substances such as external dust or water vapor are attached to the display 12 to cause poor display effect of the display 12 or even cause damage to the display 12 can be prevented.

In addition, so set up, the position of roof 111 can not be taken up in being connected between the cover body 11 and the support piece 13 for display screen 12 can see through roof 111 completely and show, and then promotes display screen 12 for the area proportion of knob 10, thereby is convenient for the user to use display screen 12, promotes user's experience.

Wherein the top wall 111 covers the display screen 12 means that the projection of the display screen 12 on the top wall 111 is located in the top wall 111. That is, the area of the side of the top wall 111 opposite to the display 12 is larger than the area of the side of the display 12 opposite to the top wall 111, so that the top wall 111 can display the content of the display 12 more fully.

In this embodiment, the side wall 112 and the support 13 may be connected by a snap structure. For example, the side wall 112 is formed with a catch 1121. The fastening slot 1121 is used to fasten with the supporting member 13, so that the cover 11 can be fixedly connected with the supporting member 13. It is understood that in other embodiments, the sidewall 112 may also be formed with the latches, or both the latches 1121 and the sidewall 112 may be formed on the sidewall. The specific setting can be according to different situations. And are not limited herein.

It will be appreciated that the side wall 112 and the support 13 may be connected by more than a snap-fit arrangement. The particular connection of the side wall 112 to the support 13 may be provided according to different situations. For example, in other embodiments, the sidewall 112 and the support member 13 may be connected by screwing or bonding. The connection between the side wall 112 and the support member 13 is not limited in particular.

Furthermore, the side wall 112 is further formed with a positioning pillar 1122, and the positioning pillar 1122 is used for abutting against the supporting member 13 to determine that the connecting position of the cover 11 and the supporting member 13 rotates. The number of positioning pillars 1122 may be 1, 2, 3, etc. And are not limited herein.

The display panel 12 may be one of a Light Emitting Diode (LED) display panel, an Organic Light Emitting Diode (OLED) display panel, or a Thin Film Transistor (TFT) display panel. It will be appreciated that the display 12 does not include only the three types described above, but may be selected in particular according to different circumstances. For example, in other embodiments, the display 12 may also be a Liquid Crystal Display (LCD).

Specifically, the first limit structure 121 is formed on the periphery of the display screen 12, and the first limit structure 121 is used for limiting the rotation of the display screen 12 relative to the support 13 with the support 13, that is, the display screen 12 can be maintained in a fixed state with the support 13 when being installed on the support 13 through the arrangement of the first limit structure 121, so that in the process of using the knob 10, the situation that the normal operation of the knob 10 is affected due to the rotation of the display screen 12 does not occur, and the reliability of the knob 10 is improved.

The number of the first limiting structures 121 may be 1, 2, 3, and the like. And are not limited herein.

In the present embodiment, the first stopper structure 121 may have a stopper projection 1211. In other embodiments, the first stopper structure may have a stopper groove. The specific type of the first position-limiting structure 121 may be set according to different situations. For example, in other examples, some of the first position-limiting structures 121 have position-limiting protrusions 1211, and other some of the first position-limiting structures 121 have position-limiting grooves. And are not limited herein.

It is noted that, in the present specification, the first position-limiting structure 121 is taken as the position-limiting protrusion 1211 for explanation. That is, in this specification, the first stopper structure 121 has a stopper projection 1211.

Further, the peripheral surface of the display 12 is further provided with a plurality of recesses 122, and the plurality of recesses 122 are recessed inward from the peripheral surface of the display 12. The arrangement of the recess 122 enables the display screen 12 to better form a fit with the support 13, so that the stability of the connection between the display screen 12 and the support 13 can be further improved.

Further, the knob 10 further includes a wire 123, the wire 123 is connected to the display 12, and the wire 123 is used for connecting to an external device to communicate the display 12 with the external device. For example, the external device may provide power to the display 12 to ensure proper operation of the display 12.

Referring to fig. 10 to 12, in the present embodiment, the supporting member 13 may include a supporting wall 131, a first connecting portion 1311, a second connecting portion 1313, an extending portion 1316, a second limiting structure 1320, and a flange 1322. The first connection portion 1311 connects the circumferential edges of the support walls 131. The flange 1322 connects the peripheral edges of the support walls 131. The second connection portion 1313 extends from the support wall 131 in a direction away from the display screen 12. The extension 1316 extends from the support wall 131 in a direction away from the display screen 12.

The supporting wall 131 is used to support the display 12, that is, the display 12 is supported on the supporting wall 131, so that the supporting wall 131 prevents the display 12 from falling down in the supporting member 13, resulting in damage to the display 12. Thereby improving reliability of the knob 10.

In the present embodiment, the supporting wall 131 is formed in the supporting member 13, and the supporting wall 131 has a circular ring shape. In other embodiments, the support wall 131 may have other shapes, and is not limited herein.

The surface of the supporting wall 131 is smooth, so that the display 12 screen can be attached to the supporting wall 131 more tightly, which is beneficial to the connection stability between the display 12 screen and the supporting wall 131.

In some embodiments, the surface of the supporting wall 131 may further be formed with an adsorbing member, such as a suction cup or a silicone pad, so that the adsorbing force between the display screen 12 and the supporting wall 131 can be further increased, and the connection stability between the supporting wall 131 and the display screen 12 can be improved.

The first connection portion 1311 is used to cooperate with the side wall 112 so that the support 13 is fixedly connected with the side wall 112. The first connection portion 1311 and the sidewall 112 may be connected by a snap structure. In such an embodiment, the first connection portion 1311 is formed with a latch 1312, and the latch 1312 of the first connection portion 1311 is engaged with the latch 1121 of the side wall 112 such that the first connection portion 1311 is connected with the side wall 112 through a snap structure.

Further, the first connection part 1311 has elasticity. The first connection portion 1311 has elasticity. The first connection portion 1311 may be made of a flexible material. Of course, in other embodiments, the first connection portion 1311 may also be made of plastic. The first connection portion 1311 is not limited to this. Therefore, the supporting piece 13 and the cover body 11 are mounted and detached, the cover body 11 or the supporting piece 13 cannot be damaged in the mounting and detaching process of the supporting piece 13 and the cover body 11, and the reliability of the knob 10 is improved.

The number of the first connection portions 1311 is plural, and the first connection portions 1311 formed with the latch 1312 means that each first connection portion 1311 is formed with the latch 1312. Of course, in other embodiments, the first connection portion 1311 may also be formed with a card slot, or the first connection portion 1311 may be formed with both a card slot and the latch 1312. The specific setting can be according to different situations. And are not limited herein.

It should be noted that, in the present embodiment, the latch 1312 of the first connecting portion 1311 and the latch groove 1121 on the side wall 112 are engaged to allow the supporting member 13 to be fastened to the cover 11. For example, assuming that the number of the first connecting portions 1311 is 4, the number of the locking slots 1121 on the side wall 112 plus the number of the locking blocks 1121 is also 4. Under the condition that the 4 first connecting portions 1311 are all formed with the card slots, the side wall 112 is correspondingly provided with 4 card blocks. When the latch 1312 is formed on all the 4 first connecting portions 1311, 4 corresponding latching slots 1121 are correspondingly formed on the side wall 112. When 2 of the 4 first connection portions 1311 are formed with the latch 1312, and the other 2 are formed with the latch slots, 2 latches and 2 latch slots 1121 are correspondingly disposed on the side wall 112, the latch 1312 of the first connection portion 1311 is fastened to the latch slot 1121 of the side wall 112, or the latch slot of the first connection portion 1311 is fastened to the latch slot of the side wall 112.

The second connection portion 1313 is connected with the control part 15 so that the support 13 can be movably connected with the control part 15. Wherein the second connecting portion 1313 is formed with a first guide stopper 1314. The first guide limiting structure 1314 may be a first limiting protrusion 1315, and the first limiting protrusion 1315 may cooperate with the control part 15 to limit the moving direction of the supporting member 13 relative to the fixing part 151. Thus, the support 13 is prevented from being separated from the control member 15, and the reliability of the knob 10 is improved.

Further, as shown in fig. 12, the extension portion 1316 is formed with a wire stop structure 1317, the wire stop structure 1317 is formed with a stop port 1318, and the wire 123 of the display screen 12 can be inserted into the stop port 1318 and extend out of the wire stop structure 1317, thereby enabling the wire 123 to extend out of the support member 13 to facilitate connection of the wire 123 to an external device. The wire limiting structure 1317 can limit the range of motion of the wire 123 relative to the support 13, so that the range of motion of the display 12 after being mounted on the support 13 is fixed, and the wire 123 is prevented from being wound, which is beneficial to the assembly of the knob 10. In addition, with such an arrangement, it is possible to prevent the crossing of the wires 123 due to an excessively large range of movement of the wires 123, thereby improving the reliability of the wires 123.

Wherein, the lead limiting structure 1317 is formed with an abutting part 1319, and the abutting part 1319 can press the key 16 under the condition of activity so as to enable the key 16 to work. Wherein the abutment 1319 may be circular, triangular, directional, etc. The specific shape of the abutting portion 1319 is not limited herein.

Specifically, the stop 1318 may be circular, triangular, square, polygonal, etc. The specific shape of the stop notch 1318 is not limited herein.

The limiting port 1318 is located at one end, away from the display screen 12, of the second connecting portion 1313, and the depth direction of the limiting port 1318 is consistent with the thickness direction of the display screen 12.

Further, the second limiting structure 1320 cooperates with the display 12 to limit the rotation of the display 12 relative to the supporting member 13, and particularly, the second limiting structure 1320 cooperates with the first limiting structure 121 to limit the rotation of the display 12 relative to the supporting member 13.

The number of the second limit structures 1320 may be 1, 2, 3, and the like. And are not limited herein.

In one example, the second stopper 1320 may be a stopper recess 1321. In another example, the second stopper 1320 may be a stopper protrusion. The specific type of the second stopper 1320 may be set according to various situations. For example, in other examples, some of the second stoppers 1320 are stopper protrusions, and other some of the second stoppers 1320 are stopper recesses 1321. And are not limited herein.

In this embodiment, the number of the second limiting structures 1320 is the same as the number of the first limiting structures 121, that is, the second limiting structures 1320 are disposed in one-to-one correspondence with the first limiting structures 121.

It should be noted that, in the case that the second limit structure 1320 is a limit convex part, the first limit structure 121 is a limit concave groove; in a case where the second position-limiting structure 1320 is a position-limiting recess 1321, the first position-limiting structure 121 is a position-limiting protrusion 1211, and in a case where the position-limiting protrusion 1211 is received in the position-limiting recess 1321, the second position-limiting structure 1320 and the first position-limiting structure 121 maintain a relatively fixed state, so that the display 12 does not rotate relative to the supporting member 13.

It is noted that, in the present specification, the second limiting structure 1320 is taken as the limiting groove 1321 for explanation. That is, in this specification, the second stopper 1320 is a stopper groove 1321.

Further, the flange 1322 is connected to the periphery of the supporting wall 131 and extends along a direction away from the supporting wall 131, so that an accommodating cavity 1323 may be formed between the flange 1322 and the supporting wall 131, and the display screen 12 is disposed in the accommodating cavity 1323 and is abutted by the inner wall of the flange 1322, thereby improving the connection stability between the display screen 12 and the support 13, preventing the display screen 12 from laterally deviating, and further improving the reliability of the knob 10.

The first connection portions 1311 and the second limit structures 1320 are formed on the flange 1322, and are spaced around the flange 1322.

Referring to fig. 11 to 12, furthermore, a positioning hole 1324 is formed on the flange 1322, and the positioning hole 1324 is matched with the positioning pillar 1122 of the side wall 112 so that the cover 11 does not rotate relative to the supporting member 13. The number of the positioning holes 1324 may be 1, 2, 3, and the like. And are not limited herein. It is noted that in the present embodiment, the number of the positioning holes 1324 is the same as the number of the positioning pillars 1122, and the positioning holes 1324 and the positioning pillars 1122 are arranged in a one-to-one correspondence, that is, one positioning pillar 1122 is located in one positioning hole 1324. Of course, in other embodiments, positioning holes may be formed in the side wall 112 and positioning posts may be formed in the flange 1322. Alternatively, positioning holes and positioning posts 1122 are formed in the side walls 112 at the same time, and positioning holes 1324 and positioning posts are formed in the flanges 1322 at the same time. The specific setting can be according to different situations. And are not limited herein.

Specifically, in other embodiments, the number of positioning holes 1324 may be greater than the number of positioning pillars 1122. And are not limited herein.

In addition, the supporting member 13 may further include a plurality of first engaging portions 1325, the first engaging portions 1325 extend from the supporting wall 131 toward a direction away from the display screen 12, the first engaging portions 1325 may be protruding blocks 1326, and in the process of accommodating the supporting member 13 in the control component 15, the first engaging portions 1325 may engage with the control component 15 to achieve rapid installation of the supporting member 13 and the control component 15, so that the installation speed is reduced, the installation efficiency is improved, and the user experience is improved. It is understood that in other embodiments, the first mating portions 1325 may also be mating slots, or several of the first mating portions 1325 may be mating slots and several other of the first mating portions 1325 may be bumps 1326. The specific type of the first fitting portion 1325 is not limited herein.

It is noted that, in the present specification, the first matching portion 1325 is taken as the bump 1326 for explanation. That is, in this specification, the first engagement portion 1325 is the bump 1326.

Referring to fig. 8 to 10 and 13, further, the knob housing 14 is sleeved outside the supporting member 13 and the control component 15, and the first knob housing 14 is disposed to protect the supporting member 13 and the control component 14, so that the knob housing 10 is more attractive and the user experience is improved.

Specifically, the knob housing 14 surrounds the housing 11 and is formed with a window 142, and the top wall 111 is exposed through the window 142, so that the knob housing 14 does not block the top wall 111, and a user can conveniently obtain the display content of the display screen 12 through the top wall 111. Wherein, a window 142 is formed through an opening 141 opened at the top of the knob case 14.

In addition, the surface of the knob shell 14 can be provided with an anti-slip structure, the anti-slip structure is arranged around the surface of the knob shell 14, and the friction coefficient of the surface of the knob shell 14 can be increased due to the arrangement of the anti-slip structure, so that the knob shell 10 is convenient for a user to use, and the user experience is improved. Wherein, the antiskid structure can be an antiskid bulge, a rubber layer and the like. The specific type of anti-slip structure is not limited herein. It is only necessary that the non-slip structure be able to increase the coefficient of friction of the surface of the knob housing 14.

Further, the knob housing 14 is formed at a plurality of first connecting structures 143, and the first connecting structures 143 are used for cooperating with the control part 15 to fixedly connect the knob housing 14 with the control part 15.

Further, the first connecting structure 143 has elasticity. The first connecting structure 143 has elasticity. Wherein, the first connecting structure 143 can be made of a flexible material. Of course, in other embodiments, the first connecting structure 143 may also be made of plastic. Without limitation, the first connecting structure 143 only needs to have elasticity. Therefore, the knob shell 14 and the control component 15 can be assembled and disassembled conveniently, the knob shell 14 and the control component 15 cannot be damaged in the process of mounting and disassembling the knob shell 14 and the control component 15, and the reliability of the knob 10 is improved.

In the present embodiment, the first connecting structure 143 is formed with a fitting block 1431, and the fitting block 1431 is engaged with the control component 15 to fixedly connect the knob housing 14 and the control component 15, it is understood that in other embodiments, the first connecting structure 143 may be formed with a fitting groove, or a part of the plurality of first connecting structures 143 may be formed with a fitting block 1431, and another part of the plurality of first connecting structures 143 may be formed with a fitting groove. The specific type of the first connecting structure 143 is not limited herein, and may be set according to different situations.

In addition, the knob shell 14 is formed with a plurality of second cooperation portions 144, and the second cooperation portions 144 can be guide protrusions 1441, and in the process of sleeving the knob shell 14 on the control component 15, the second cooperation portions 144 can cooperate with the control component 15 to realize quick installation of the knob shell 14 and the control component 15, so that the installation speed is reduced, the installation efficiency is improved, and the user experience is improved. It is understood that in other embodiments, the second mating portion 144 may also be a guide groove, or some of the second mating portions 144 may be a guide groove and other ones of the second mating portions 144 may be guide protrusions 1441. The specific type of the second mating portion 144 is not limited herein.

In particular, the knob housing 14 may be made of plastic. The plastic is low in cost and strong in plasticity, which is beneficial to manufacturing the knob shell 14, i.e., the manufacturing cost of the knob 10 can be reduced and the mass production of the knob 10 can be improved. Of course, the knob housing 14 may be made of more than just plastic. The specific material of the knob housing 14 can be designed according to different situations. For example, in other embodiments, the knob housing 14 may also be made of iron, aluminum, stainless steel. The specific material of the knob case 14 is not limited herein.

Referring to fig. 14 to 16, the control component 15 includes a fixed portion 151 and a rotating portion 152 rotating relative to the fixed portion 151, the supporting member 13 is at least partially accommodated in the fixed portion 151 and can move along a depth direction of the fixed portion 151, and the knob housing 14 is fixedly connected to the rotating portion 152. In this way, the user can control the operation of the household appliance 1000 by rotating the knob housing 14 or pressing the cover 11.

It is understood that the fixed portion 151 may be an encoder (e.g., a magnetic encoder), and the rotating portion 152 constitutes a rotatable outer ring of the encoder. Wherein the type of encoder can be selected on a case-by-case basis. The rotary portion 152 of the encoder is thus able to rotate with the rotation of the knob housing 14, thereby performing its function as set accordingly.

Referring to fig. 16, specifically, the rotating portion 152 is disposed around the periphery of the fixing portion 151, the fixing portion 151 is formed with an installation chamber 1511, the installation chamber 1511 is disposed around the fixing portion 151, and the rotating portion 152 is partially located in the installation chamber 1511 and can rotate relative to the installation chamber 1511. The mounting chamber 1511 is formed with a first abutting portion 1512, a portion of the rotating portion 152 located in the mounting chamber 1511 is formed with a second abutting portion 1521, and the first abutting portion 1512 and the second abutting portion 1521 cooperate to prevent the rotating portion 152 from being disengaged from the mounting chamber 1511, so as to improve the connection stability between the rotating portion 152 and the fixing portion 151.

Further, the fixing portion 151 is formed with a receiving hole 1513, the supporting member 13 is at least partially received in the receiving hole 1513, the receiving hole 1513 is configured to facilitate installation of the supporting member 13, and the supporting member 13 can be prevented from loosening, thereby improving reliability of the knob 10. Wherein, the supporting member 13 is movable in the depth direction of the accommodating hole 1513 relative to the fixing portion 151.

In particular, the fixed portion 151 is formed with a second guide limit structure 1514, the second guide limit structure 1514 being able to cooperate with the first guide limit structure 1314 to limit the range of movement of the support 13 relative to the fixed portion 151. The second guiding and limiting structure 1514 includes a second limiting protrusion 1515, and the second limiting protrusion 1515 and the first limiting protrusion 1315 cooperate to limit the moving range of the supporting member 13 relative to the fixing portion 151, so that the supporting member 13 can be prevented from being accidentally detached from the accommodating hole 1513, and the connection stability of the supporting member 13 and the control part 15 can be improved.

Further, the wires 123 are sequentially inserted into the wire limiting structure 1317 and the fixing portion 151. In this manner, connection of the lead 123 to an external device is facilitated.

In this description, the first and second guide stops 1314, 1514 are resilient. The first and second guiding and limiting

structures

1314, 1514 may be made of a flexible material. Of course, in other embodiments, the first and second guide stops 1314, 1514 may also be formed from plastic. The first guide limiting structure 1314 and the second guide limiting structure 1514 are not limited, and only need to have elasticity, so that under the condition that the first guide limiting structure 1314 and the second guide limiting structure 1514 are matched, a user can easily separate the first guide limiting structure 1314 and the second guide limiting structure so as to separate the supporting piece 13 from the fixing part 15, and therefore the process of quickly separating the supporting piece 13 from the fixing part 15 is achieved. In addition, the support piece 13 or the control component 15 cannot be damaged in the disassembling mode, the disassembling mode is simple, and the user experience is improved.

Wherein, the first and

second limit protrusions

1315 and 1515 are aligned in the depth direction of the accommodation hole 1513. Therefore, the first limiting protrusion 1315 and the second limiting protrusion 1515 can be conveniently matched stably, and the situation that the first limiting protrusion 1315 and the second limiting protrusion 1515 are not matched and fail due to the fact that the positions of the first limiting protrusion 1315 and the second limiting protrusion 1515 are not corresponding can be avoided.

Further, the fixing part 151 is formed with a guide groove 1516, the guide groove 1516 communicates with the accommodation hole 1513, the guide groove 1516 extends along the depth direction of the accommodation hole 1513, and the first guide limit structure 1314 is movable within the guide groove 1516 to move the support 13 relative to the fixing part 151 along the depth direction of the accommodation hole 1513. The guide groove 1516 can guide the support member 13 to move in the guide groove 1516, that is, the support member 13 is guided to move relative to the fixing portion 151 in the depth direction of the receiving hole 1513, so that the support member 13 can be prevented from rotating relative to the fixing portion 151, so that the support member 13 can only move in the guide groove 1516.

In the present embodiment, the second stopper protrusion 1515 is located within the guide groove 1516, and the guide groove 1516 cooperates with the second stopper protrusion 1515 to guide the support 13 to move relative to the fixing portion 151 in the depth direction of the accommodation hole 1513.

Referring to fig. 14, further, a plurality of third engaging portions 1517 are formed on the fixing portion 151, the third engaging portions 1517 are communicated with the accommodating hole 1513, and the third engaging portions 1517 are engaged with the first engaging portion 1325 to achieve quick installation of the supporting member 13 and the control member 15, so as to enhance user experience. In this embodiment, the third engaging portion 1517 is an engaging groove 1518, and in other embodiments, the third engaging portion 1517 may be a protrusion or a combination of a protrusion and an engaging groove 1518. The specific type of the third fitting portion 1517 is not limited herein.

In the present embodiment, the number of the third engagement portions 1517 is the same as that of the first engagement portions 1325, that is, the third engagement portions 1517 are provided in one-to-one correspondence with the first engagement portions 1325.

Note that, in the case where the third fitting portion 1517 is the fitting groove 1518, the first fitting portion 1325 is the projection 1326; when the third engagement portion 1517 is a projection, the first engagement portion 1325 is an engagement groove. So, under the circumstances of lug 1326 and cooperation groove 1518 complex, support piece 13 and control unit 15 can realize quick installation, need not take time to go to adjust the coordination angle, only need can realize through first cooperation portion 1325 and third cooperation portion 1517, and is simple swift, promotes user's experience.

Furthermore, the fixing portion 151 is formed with a plurality of first pins 1519, and the fixing portion 151 is electrically connected to the circuit board 17 through the plurality of first pins 1519.

The wires 123 are sequentially inserted into the supporting member 13, the fixing portion 151 and the circuit board 17, so that the wires 123 are connected to an external device.

Referring to fig. 14 and 15, in the present embodiment, a plurality of second connection structures 1522 are formed on the rotating portion 152, and the second connection structures 1522 are connected to the first connection structure 143, so that the knob housing 14 is fixedly connected to the control component 15. The number of the second connecting structures 1522 is the same as that of the first connecting structures 143, and the second connecting structures 1522 are arranged in a one-to-one correspondence manner. The one-to-one correspondence arrangement means that when one of the second connection structures 1522 is matched with one of the first connection structures 143, the remaining second connection structures 1522 and the remaining first connection structures 143 can be matched with each other.

Further, the second connecting structure 1522 may be a fitting groove 1523, and the fitting groove 1523 is matched with the fitting block 1431 of the first connecting structure 143 so as to fixedly connect the knob housing 14 with the rotating portion 152. It is understood that in other embodiments, the second connecting structures 1522 may also be a fitting block, or a part of the second connecting structures 1522 may be a fitting block and another part of the second connecting structures 1522 may be a fitting groove 1523. The specific setting can be according to the actual conditions. The specific type of the second connection structure 1522 is not limited herein.

Note that, in the case where the second connection structure 1522 is a fitting groove 1523, the first connection structure 143 is a fitting block 1431; when the second connection structure 1522 is a fitting block, the first connection structure 143 is a fitting groove. So, under the condition of gomphosis piece 1431 gomphosis to gomphosis groove 1523, fixed connection can be realized with control unit 15 to knob shell 14, so, the user can be through rotating knob shell 14 in order to realize the rotation of rotating part 152 to realize the corresponding function of setting for of encoder, convenient and fast promotes user experience.

Further, the rotating portion 152 is formed with a fourth matching portion 1524, and the fourth matching portion 1524 is matched with the second matching portion 144 to realize the quick installation of the knob shell 14 and the control component 15, so as to improve the experience of the user. In this embodiment, the fourth matching portion 1524 is a guiding groove 1525, and in other embodiments, the fourth matching portion 1524 may also be a guiding protrusion, or a combination of a guiding protrusion and a guiding groove 1525. The specific type of the fourth mating portion 1524 is not limited herein.

In the present embodiment, the number of the fourth matching parts 1524 is the same as that of the second matching parts 144, that is, the fourth matching parts 1524 are arranged in one-to-one correspondence with the second matching parts 144.

Note that, in the case that the fourth fitting portion 1524 is the guide groove 1525, the second fitting portion 144 is the guide protrusion 1441; in the case that the fourth matching part 1524 is a guiding protrusion, the second matching part 144 is a guiding groove 1525. So, under the protruding 1441 of guide and the guide slot 1525 complex condition, the quick installation of realizing of knob shell 14 and control unit 15 need not spend time to go the adjustment coordination angle, only needs can realize through second cooperation portion 144 and fourth cooperation portion 1524, and is simple swift, promotes user's experience.

Referring to fig. 8 to 10 and 17, the key 16 further includes a body 161 and a spring contact 162, and the spring contact 162 is mounted on the body 161 and can move relative to the body 161. In the present embodiment, in the case where the abutting portion 1319 is not movable, the abutting portion 1319 may not contact the spring contact 162. Of course, in other embodiments, the abutting portion 1319 may also be in contact with the spring contact 162 in the case where the abutting portion 1319 is not movable. And are not limited herein.

Further, the center line of the abutting portion 1319 overlaps with the center axis of the spring contact 162.

Wherein, in the process that the supporting part 13 moves relative to the fixing part 151, the supporting part 13 is interfered with or separated from the key 16. More specifically, the abutting portion 1319 can interfere with or separate from the spring contact 162 during the movement of the support 13 relative to the fixing portion 151. As such, the abutting portion 1319 can press the spring contact 162 to operate the key 16.

When the cover 11 is pressed, the support member 13 is pressed and moves downward relative to the knob housing 14, and thus the abutting portion 1319 also moves downward relative to the knob housing 14 to press the spring contact 162, and the spring contact 162 is in a compressed state (as shown in fig. 10). In the case where the cover 11 is not pressed, the compressed spring contact 162 needs to return to the initial state to drive the abutting portion 1319 to move upward, and further drive the support 13 and the cover 11 to move upward, so that the support 13 and the cover 11 return to the original positions (as shown in fig. 8 and 9). This enables selection of a function via the keys 16. Wherein the key 16 may be a tact switch.

Furthermore, the key 16 is formed with a plurality of second pins, and the key 16 is electrically connected to the circuit board 17 through the plurality of second pins.

In this specification, the key 16 is disposed below the support 13.

Referring to fig. 18, in the present embodiment, the circuit board 17 is formed with a wire passing hole 171, the conductive wire 123 sequentially passes through the position-limiting opening 1318 and the wire passing hole 171, the wire passing hole 171 is aligned with the position-limiting opening 1318, and specifically, the wire passing hole 171 and the position-limiting opening 1318 are vertically disposed correspondingly, so that the conductive wire 123 conveniently passes through the position-limiting opening 1318 and the wire passing hole 171, and at this time, the conductive wire 123 does not need to be bent too much. Of course, in other embodiments, the position-limiting opening 1318 and the wire-passing hole 171 may not be aligned. And are not limited herein.

The lead 123 penetrates through the limiting opening 1318 and the wire passing hole 171 and extends out of the circuit board 17, so that the lead 123 is conveniently connected with external equipment.

Further, the wire through hole 171 may be rectangular, circular, triangular, etc. The specific shape of the wire passing hole 171 is not limited herein.

Specifically, the circuit board 17 may be a flexible circuit board, a printed circuit board, or other types of circuit boards. The specific type of circuit board 17 is not limited herein.

The adjustment method of the knob 10 will be described below by taking fig. 19 to 21 as an example. The user can make the corresponding selection and adjustment (e.g., temperature, humidity, time or power, etc.) by rotating the knob housing 14, and the user can confirm by pressing or clicking the enclosure 11. For example, in the examples shown in fig. 19-20, the a icon represents a function option (e.g., a function of heating, drying, thawing, or disinfecting), the B icon represents a time option, the C icon represents a power option, and the D icon represents a start option. The user may first switch the a icon displayed on the enclosure 11 by rotating the knob housing 14 (e.g., clockwise rotating the knob housing 14 as shown by the arrow in fig. 19) and select the corresponding function option by clicking or pressing the enclosure 11 (as shown in fig. 20), at which time the knob 10 will automatically jump to the next option (the time option corresponding to the B icon, 30 seconds corresponding to fig. 19). The user can then continue to rotate the knob housing 14 (e.g., rotate the knob housing 14 clockwise as shown by the arrow in fig. 19) to increase the time from 30 seconds shown in fig. 19 to 35 seconds shown in fig. 20, and can select the corresponding time (35 seconds) by clicking or pressing the housing 11 (as shown in fig. 20), at which point the knob 10 will continue to automatically jump to the next option (power option corresponding to the C icon, 900w shown in fig. 21). The user may then continue to rotate the knob housing 14 (e.g., rotate the knob housing 14 clockwise as shown by the arrow in fig. 20) to increase or decrease power and may be able to select the corresponding power by clicking or pressing on the casing 11 (as shown in fig. 20), at which point the knob 10 will continue to automatically jump to the next option (the activation option corresponding to the D icon). The user may then initiate the selected procedure by clicking or pressing on the housing 11. Of course, it is understood that the adjustment manner of the knob 10 by the user is not limited to the above-mentioned manner, and can be set according to the specific situation.

In summary, the rotary knob 10 of the present embodiment includes a support 13, a display 12 and a wire 123. The support 13 is formed with a wire stop 1317. The display screen 12 is mounted on a support 13. The wires 123 are connected to the display 12. The wire 123 is inserted through the wire limiting structure 1317, so that the wire limiting structure 1317 limits the range of motion of the wire 123 relative to the support 13.

In the knob 10 of the present embodiment, the wire limiting structure 1317 can limit the moving range of the wire 123 relative to the supporting member 13, so that the moving range of the display 12 installed behind the supporting member 13 is fixed, the wire 123 can be prevented from being wound, and the knob 10 can be assembled conveniently.

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

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A knob, comprising:

the supporting piece is provided with a lead limiting structure;

a display screen mounted on the support; and

2. The knob according to claim 1, wherein the knob comprises a circuit board having a wire through hole, the wire limiting structure has a limiting opening, and the wire is sequentially inserted through the limiting opening and the wire through hole.

3. The knob according to claim 2, wherein the position-limiting opening is located at an end of the supporting member away from the display screen, a depth direction of the position-limiting opening is consistent with a thickness direction of the display screen, and the position-limiting opening is aligned with the wire through hole.

4. The knob of claim 2 wherein said support includes a support wall and an extension extending away from said support wall, said display being supported on said support wall;

5. The rotary knob according to claim 1, further comprising a housing covering the display screen, wherein the housing comprises a top wall that is transparent to light and side walls extending from edges of the top wall, the top wall covering the display screen, the side walls surrounding the display screen and fixedly connected to the support member.

6. The knob according to claim 5, wherein the support member includes a support wall and a first connecting portion connecting a periphery of the support wall, the first connecting portion and the side wall cooperating to fixedly connect the support member to the side wall, the display screen being supported on the support wall.

7. The knob according to claim 6, wherein the first connecting portion is formed with a latch, the sidewall is formed with a slot engaged with the latch, and the latch is engaged in the slot; or

8. The knob of claim 1 wherein the periphery of the display is formed with a first stop formation and the support member is formed with a second stop formation, the first stop formation and the second stop formation cooperating to limit rotation of the display relative to the support member.

9. The knob according to claim 8 wherein the support comprises a support wall on which the display screen is supported and a flange connecting the periphery of the support wall;

10. The knob according to claim 1, wherein the knob comprises a control part, the control part comprises a fixed part and a rotating part rotating relative to the fixed part, the fixed part is formed with a receiving hole, the support member is at least partially received in the receiving hole, the support member is movable relative to the fixed part in a depth direction of the receiving hole, and the wire is sequentially inserted through the wire limiting structure and the fixed part.

11. The knob according to claim 10, wherein the supporting member comprises a supporting wall and a second connecting portion extending from the supporting wall in a direction away from the display screen, the display screen being supported on the supporting wall, the second connecting portion being at least partially received in the receiving hole;

12. The knob according to claim 11, wherein the first guide limit structure comprises a first limit protrusion, the second guide limit structure comprises a second limit protrusion engaged with the first limit protrusion, and the first limit protrusion and the second limit protrusion are aligned in a depth direction of the receiving hole.

13. The knob according to claim 12, wherein the fixing portion is formed with a guide groove communicating with the receiving hole, the guide groove extending in a depth direction of the receiving hole, the guide groove cooperating with the second stopper protrusion to guide the support member to move relative to the fixing portion in the depth direction of the receiving hole.

14. The knob according to claim 10, wherein the knob comprises a key disposed below the support member, the support member being interfered with or separated from the key during movement of the support member with respect to the fixing portion.

15. The knob according to claim 10, further comprising a knob housing, wherein said knob housing is sleeved outside said support member and said control member, and wherein said knob housing is fixedly connected to said rotating portion.

16. A panel assembly, comprising:

a panel;

the knob of any one of claims 1-15 disposed on the faceplate.

17. A household appliance, characterized in that it comprises:

a main control board;

the panel assembly of claim 16, said master control board being electrically connected to said panel assembly.