CN214477108U - Knob and household appliance - Google Patents

Abstract

The utility model provides a knob and a household appliance, relating to the technical field of household appliances, wherein the knob comprises a panel, a through hole for a display screen to penetrate is arranged on the panel, and an annular boss is arranged around the edge of the through hole; the display screen cover is arranged on one side of the through hole and used for covering the display screen; the knob decorative ring is arranged between the display screen cover and the panel and is sleeved outside the annular boss; the knob decorative ring is provided with an inner ring and an outer ring which are coaxially arranged, the display screen cover covers the inner ring, and a gap is formed between the display screen cover and the outer ring; be equipped with the passageway between inner ring and the outer loop, the passageway extends to the panel from the gap, and this knob has alleviated the technical problem that outside water passes through the gap entering domestic appliance that exists between screen decoration circle and the display screen among the prior art.

Description

Knob and household appliance

Technical Field

The utility model belongs to the technical field of the domestic appliance technique and specifically relates to a knob and domestic appliance are related to.

Background

The knob is widely applied to a control panel of a household appliance, and the household appliance is controlled by rotating the knob. Knob among the prior art mainly includes that display screen and screen decorate the circle, and the display screen can show different functions, and screen device snare is located the outside of display screen, decorates the circle through rotatory screen, can realize the selection to function on the display screen, because there is the gap between screen decoration circle and the display screen, outside water gets into domestic appliance inside through the gap easily, and then causes the damage to control panel.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a knob to alleviate among the prior art gap entering domestic appliance that outside water exists between through screen decoration circle and the display screen.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a knob, which comprises a panel, a through hole for a display screen to penetrate through is arranged on the panel, and an annular boss is arranged around the edge of the through hole; the display screen cover is arranged on one side of the through hole and used for covering the display screen; the knob decorative ring is arranged between the display screen cover and the panel and is sleeved outside the annular boss; the knob decorative ring is provided with an inner ring and an outer ring which are coaxially arranged, the display screen cover covers the inner ring, and a gap is formed between the display screen cover and the outer ring; a channel is arranged between the inner ring and the outer ring and extends to the panel from the gap.

In this technical scheme, when outside water got into the gap between display screen lid and the outer loop, the water in the gap got into the passageway and flows to the panel along the passageway on, outside the cyclic annular boss was located to the knob decoration ring cover, consequently located the passageway between inner ring and the outer loop with water drainage to the outside of cyclic annular boss, cyclic annular boss can block the water entering through-hole that flows from the channel exit to play the guard action to the display screen.

The utility model discloses an among the technical scheme, be connected through a plurality of splice bars between inner ring and the outer loop, a plurality of splice bars form the passageway jointly between inner ring, outer loop and the adjacent splice bar along the circumference interval distribution of knob rosette.

In the technical scheme, the inner ring and the outer ring are connected through a plurality of connecting ribs, and a plurality of channels are formed on the knob decorative ring.

In a technical scheme of the utility model, the distance scope between inner ring and the outer loop is 1mm-10 mm.

In this technical scheme, through the distance scope of injecing between inner ring and the outer loop, prevent to make water form the water film between the two because of the distance between the two is too little, influence the normal flow of water, prevent simultaneously to increase the space that knob decorative ring occupy because of the distance between the two is too big.

The utility model discloses an among the technical scheme, the inner ring is including first ring segment, linkage segment and the second ring segment of end to end connection in proper order, and the internal diameter of first ring segment is less than the internal diameter of second ring segment, and the linkage segment is sat and is established at cyclic annular boss, and the second ring segment cover is established outside cyclic annular boss.

In this technical scheme, the cross-section of inner ring is the form of bending to other parts cooperation installations in adaptation and the knob make the structure of knob compacter, reduce occupation space.

The utility model discloses an among the technical scheme, the display screen lid is equipped with first collar towards the panel, and first collar is inserted and is established between first ring segment and outer loop.

In this technical scheme, first collar can play the manger plate effect, and when water flowed along the edge of display screen lid, first collar stopped that the manger plate continues to flow to the direction that is close to in display screen lid center to make water flow to drop to the passageway at last down along first collar, prevent that water from flowing to the display screen lid down the middle part of terminal surface and dropping to the display screen, further improve the water-proof effects of knob.

The utility model discloses an among the technical scheme, the display screen lid is equipped with the second collar towards the panel, and the internal diameter of second collar is greater than the external diameter of first ring segment, the external diameter of second collar is less than the internal diameter of first collar.

In this technical scheme, the second collar is located between inner ring and the first collar, further plays waterproof effect.

In a preferred embodiment of the present invention, the free end of the second mounting ring extends to the connecting section.

In the technical scheme, the second mounting ring is matched with the connecting section, so that the sealing performance of the knob is improved.

The utility model discloses an among the technical scheme, from one end to the panel that second ring segment and linkage segment are connected, the distance grow between second ring segment and the outer loop.

In the technical scheme, the distance between the second annular section and the outer ring is increased, so that the width of the channel is increased, and the water can flow in the channel conveniently.

In a technical proposal of the utility model, the length range of the annular boss from the root end to the free end is 3mm-15 mm.

In this technical scheme, through the high scope of injecing cyclic annular boss, prevent to influence water-proof effects because of the height of cyclic annular boss is low excessively, simultaneously, prevent to increase the occupation space of knob because of the high too high of cyclic annular boss.

The utility model discloses an among the technical scheme, the knob is still including the display support of locating the opposite side of through-hole, and the display support has the boss, and the boss passes the through-hole to be connected with the display screen lid, and the boss is equipped with the appearance chamber that is used for holding the display screen.

In this technical scheme, the display screen is located the appearance intracavity of boss, and the display screen lid is connected in the boss, and the display screen lid plays the guard action with holding the chamber cooperation to the display screen.

The utility model discloses an among the technical scheme, the knob still includes adjusting part, and when adjusting part and inner ring were connected, still be used for being connected with the encoder of display screen.

In this technical scheme, the user accessible rotates knob dress trim ring, makes knob dress trim ring pass through adjusting part and drives the encoder motion on the automatically controlled display panel to realize the regulation of function.

In one technical scheme of the utility model, the adjusting component comprises a driving gear and a driven gear which are meshed with each other, and the driving gear is rotatably sleeved on the periphery of the boss and is fixedly connected with the inner ring; the driven gear is used for being connected with the encoder.

In this technical scheme, the knob rosette drives the driving gear and rotates, and the driving gear drives driven gear and rotates to make driven gear drive encoder and rotate, realize the regulation of function.

In a technical solution of the present invention, the driving gear is fixed to the inner ring through a joint.

In this technical scheme, the knob rosette is connected with the driving gear through the mode of joint, conveniently assembles knob rosette and driving gear.

The utility model discloses an among the technical scheme, inner ring's inner wall is equipped with a plurality of joints arch, and the driving gear is equipped with a plurality of joint grooves, a plurality of joint arch and a plurality of joint groove one-to-one ground joint.

In this technical scheme, the inner ring is fixed with the driving gear through joint arch and joint groove joint, conveniently realizes assembling between inner ring and the driving gear.

The utility model discloses an among the technical scheme, the knob still includes automatically controlled display panel and film sticker, and automatically controlled display panel includes the display screen, and the display screen is inserted and is established in holding the intracavity, and film sticker lid is established at the boss.

In the technical scheme, the electric control display panel is assembled and matched with the film paster to display various functions, and compared with an integrated display screen in the prior art, the cost is lower.

An object of the second aspect of the present invention is to provide a household appliance, including the knob of any one of the above technical solutions.

The utility model provides a domestic appliance is provided with above-mentioned knob, when outside water got into the gap between display screen lid and the outer loop, the water in the gap got into the passageway and flows to the panel along the passageway, because of the knob dress trim ring cover locate annular boss outside, locate the passageway between inner ring and the outer loop with the outside of water drainage to annular boss, annular boss can block the water entering through-hole that flows from the channel outlet to play the guard action to the display screen.

Drawings

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

FIG. 1 is a schematic view of an electric cooker according to an embodiment of the present invention;

FIG. 2 is a sectional view of the electric rice cooker according to the embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is an exploded view of a knob according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a knob decoration ring in a knob according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a knob decoration ring in a knob according to an embodiment of the present invention at a first viewing angle;

FIG. 7 is a cross-sectional view taken along line A of FIG. 6;

fig. 8 is a schematic structural view of a knob decoration ring at a second viewing angle in a knob according to an embodiment of the present invention;

FIG. 9 is a cross-sectional view taken along line B of FIG. 8;

fig. 10 is a schematic view illustrating the matching between the driving gear and the driven gear in the knob according to the embodiment of the present invention.

Icon:

001-knob;

100-a panel; 110-a via; 120-annular boss;

200-a display screen cover; 210-a first mounting ring; 220-a second mounting ring; 230-a resilient snap tab;

300-knob decorative ring; 310-inner ring; 311-a first ring segment; 312-a connecting segment; 313-a second annular segment; 314-snap projections; 320-outer ring; 330-channel; 340-connecting ribs;

400-display stand; 410-a boss; 420-a flat plate portion;

510-a drive gear; 511-connecting cylinder; 512-clamping groove; 520-a driven gear;

610-an electronically controlled display panel; 620-film paster;

710-a pan body; 720-cover body; 721-face cover; 722-support groove.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment of the utility model provides a household appliance, household appliance's roof or lateral wall are equipped with knob 001, and knob 001 includes display screen and knob rosette 300, and the display screen can show multiple functions, and the outside of display screen is located to knob rosette 300 cover to be equipped with the scale mark, through rotatory knob rosette 300, make the scale mark on the knob rosette 300 relative with required function, thereby realize the selection to the household appliance function.

Specifically, the household appliance may be an electric cooker, an air fryer, a microwave oven or an electric fan, and the following description will specifically take the household appliance as an electric cooker.

As shown in fig. 1 and fig. 2, the electric rice cooker comprises a cooker body 710 and a cover body 720, the cooker body 710 has a cavity for placing the inner container, one end of the cover body 720 is hinged to the cooker body 710 through a hinge shaft, the cover body 720 has an opening position for opening the cavity and a closing position for closing the cavity, the other end of the cover body 720 is detachably connected with the cooker body 710 through a buckle assembly, during the working process of the electric rice cooker, the cover body 720 is located at the closing position and is connected with the cooker body 710 through the buckle assembly, and when food in the inner container needs to be taken or the inner container needs to be taken out, the cover body 720 is opened through the buckle assembly.

The knob 001 is provided on the cover 720 and is located at an end of the cover 720 away from the hinge shaft. When daily using electric rice cooker, the user is used to be close to the articulated shaft in the wall body, lid 720 with pot body 710 detachable one end towards the outside, locate the tip of keeping away from the articulated shaft of lid 720 with knob 001, convenience of customers passes through knob 001 and adjusts electric rice cooker's function.

Since there is a gap between the display screen and the knob 001, in the process of using the rice cooker in daily life, external water may enter the inside of the rice cooker through the gap, and further damage to the display screen is caused.

As shown in fig. 3 and 4, the knob 001 includes: the display panel comprises a panel 100, a display screen cover 200 and a knob decorative ring 300, wherein the panel 100 is arranged on a cover body 720, when the cover body 720 is located at a closed position, the panel 100 is located above the cover body 720, a through hole 110 is arranged on the panel 100, an annular boss 120 is surrounded outside the through hole 110, the annular boss 120 is located on one side of the panel 100, and the diameter of the through hole 110 is equal to the inner diameter of the annular boss 120. The length of the annular boss 120 from the root end to the free end (i.e., the height of the annular boss 120) ranges from 3mm to 15mm, and specifically, the height of the annular boss 120 may be 3mm, 5mm, 10mm, 15mm, or the like. Through the height scope of injecing cyclic annular boss 120, prevent to influence water-proof effects because of cyclic annular boss 120's height is low excessively, simultaneously, prevent to increase knob 001's occupation space because of preventing bellied high too high.

As shown in fig. 5 to 9, the knob decorative ring 300 includes an inner ring 310 and an outer ring 320 coaxially disposed, the outer ring 320 is sleeved outside the inner ring 310, a plurality of connection ribs 340 are disposed between the inner ring 310 and the outer ring 320, the plurality of connection ribs 340 are uniformly distributed along the circumferential direction of the inner ring 310 and are fixedly connected to the inner ring 310 and the outer ring 320, respectively, a channel 330 for water to pass through is formed between the inner ring 310 and the outer ring 320 and between adjacent connection ribs 340, and the plurality of connection ribs 340 enable a plurality of channels 330 uniformly distributed along the circumferential direction of the outer ring 320 to be formed between the inner ring 310 and the outer ring 320, thereby facilitating water in the gap to be drained to the panel 100 through the channel 330. Further, the knob decorative ring 300 may be an integrally formed structure, and the knob decorative ring 300 including the inner ring 310, the outer ring 320 and the connecting rib 340 is formed by injection molding, so as to facilitate the processing of the knob decorative ring 300 and improve the connection stability between the inner ring 310 and the outer ring 320.

The distance between the inner ring 310 and the outer ring 320 ranges from 1mm to 10 mm. Specifically, the distance between the outer wall of the inner ring 310 and the inner wall of the outer ring 320 may be 1mm, 3mm, 5mm, 7mm, 9mm, or 10mm, etc., which defines the distance range between the inner ring 310 and the outer ring 320, prevents water from forming a water film between the two due to an excessively small distance therebetween, which affects the normal flow of water, and simultaneously prevents an increase in the space occupied by the knob decorative ring 300 due to an excessively large distance therebetween.

As shown in fig. 3, the knob decorative ring 300 is disposed along a vertical direction, a lower end of the inner ring 310 is sleeved outside the annular boss 120 and adjacent to the panel 100, a lower end surface of the inner ring 310 is flush with a lower end surface of the outer ring 320, an upper end surface of the inner ring 310 is lower than an upper end surface of the outer ring 320, and a height difference is slightly equal to a thickness of the display cover 200, wherein the lower end surface of the inner ring 310 and the lower end surface of the outer ring 320 respectively refer to end surfaces of the inner ring 310 and the outer ring 320 facing the panel 100, and the upper end surface of the inner ring 310 and the upper end surface of the outer ring 320 respectively refer to end surfaces of the inner ring 310 and the outer ring 320 close to one end of the display cover 200. The channel 330 between the inner ring 310 and the outer ring 320 also extends in the vertical direction, the inlet of the channel 330 is disposed at the upper end of the channel 330 and is communicated with the gap between the display screen cover 200 and the outer ring 320, the outlet of the channel 330 is disposed at the lower end of the channel 330, and because the lower end of the inner ring 310 is sleeved outside the annular boss 120, the outlet of the channel 330 is located at the gap between the outer ring 320 and the panel 100 or the gap between the inner ring 310 and the panel 100 and is located outside the annular boss 120.

From the end of the second annular section 313 where the connecting section 312 is connected to the panel 100, the inner wall of the outer ring 320 is inclined away from the inner ring 310, so that the distance between the second annular section 313 and the outer ring 320 becomes larger. The inclined inner wall increases the width of the outlet of the channel 330, which is beneficial to the water flow, and in addition, when the water flow flows along the inner wall of the outer ring 320, the inner wall of the outer ring 320 guides the water flow to the direction far away from the through hole 110, thereby further improving the waterproof effect of the knob 001.

The cross-section of display screen lid 200 is circular, and the diameter of display screen lid 200 is greater than the external diameter of inner ring 310 and slightly is less than the internal diameter that is less than outer ring 320, display screen lid 200 is located outer ring 320, and the up end of up end and outer ring 320 is close the parallel and level, in order to improve the aesthetic property of knob 001, the lower terminal surface of display screen lid 200 sets up with the relative interval of interior up end, and leave the gap between the outer peripheral face of display screen lid 200 and the inner wall of outer ring 320, prevent to influence mutual rotation between the two. When external water enters a gap between the display screen cover 200 and the outer ring 320, because the outer edge of the display screen cover 200 is located between the inner ring 310 and the outer ring 320, the water can enter the channel 330 along the outer edge of the display screen cover 200 or the inner wall of the outer ring 320 and flow out from the outlet of the channel 330, the outlet of the channel 330 is located at the outer side of the annular boss 120, and the annular boss 120 can block the water flowing out from the channel 330 from entering the through hole 110, so that the display screen is protected.

As a further embodiment, the display cover 200 is provided with a first mounting ring 210 and a second mounting ring 220 towards the panel 100, the first mounting ring 210 and the second mounting ring 220 are coaxially arranged and are located between the inner ring 310 and the outer ring 320, wherein the outer diameter of the first mounting ring 210 is equal to the diameter of the display cover 200, the outer circumferential surface of the first mounting ring is flush with the outer circumferential surface of the display cover 200, and the second mounting ring 220 is located inside the first mounting ring 210 and is spaced apart from the first mounting ring 210. First collar 210 and second collar 220 all can play the manger plate effect, when water flows along the edge of display screen lid 200, first collar 210 and second collar 220 block water and continue to flow to the direction that is close to in display screen lid 200 center, and make water flow downwards along first collar 210 or second collar 220 and drop to the passageway 330 at last, prevent that water from flowing to the middle part of terminal surface under the display screen lid 200 and dropping to the display screen, the water-proof effects of knob 001 has further been improved.

The above is a description of the waterproof structure of the knob 001, and the following is a description of a specific structure of the display screen in the knob 001:

as shown in fig. 4, the cover 720 of the rice cooker further includes a face cover 721, the face cover 721 is provided with a display panel supporting groove 722, the panel 100 covers the face cover 721 to protect the components mounted on the face cover 721, and the through hole 110 of the panel 100 is communicated with the display panel supporting groove 722. Knob 001 still includes display bracket 400, and display bracket 400 includes boss 410 and flat board portion 420, and boss 410 fixed connection is in the middle part of flat board portion 420 to be equipped with the appearance chamber, the opening of appearance chamber runs through the flat board portion, and is equipped with a plurality of through-holes 110 on the diapire of appearance chamber, and flat board portion 420 is located the opposite side of panel 100, and boss 410 passes through-hole 110 and is connected with display screen lid 200.

The knob 001 further comprises an electric control display panel 610 and a film sticker 620, the electric control display panel 610 comprises a display screen, the flat plate portion 420 of the display bracket 400 and the electric control display panel 610 are both located in the display panel supporting groove 722, the electric control display panel 610 is located between the flat plate portion 420 and the groove bottom of the display panel supporting groove 722, and the display panel bracket is connected with the face cover 721 so as to fix the position of the electric control display panel 610. Boss 410 passes through-hole 110 on the panel 100 and stretches out to the outside of lid 720, and the display screen is located the container, and is located the outside of lid 720, and film sticker 620 is located between display screen and display screen lid 200, and the display screen includes lamp pearl and digital display tube.

The display screen cover 200 is clamped with the boss 410 in a clamping manner, specifically, a plurality of arc-shaped clamping grooves are formed in the end face of the boss 410, the clamping grooves are evenly distributed along the circumferential direction of the boss 410 and are located on a through circle, a plurality of elastic clamping pieces 230 with arc-shaped cross sections are arranged on the display screen cover 200, the positions of the elastic clamping pieces 230 are in one-to-one correspondence with the positions of the clamping grooves, the diameter of the circle corresponding to the elastic clamping pieces 230 is slightly larger than that of the circle corresponding to the clamping grooves, and the elastic clamping pieces 230 are clamped in the clamping grooves in a one-to-one correspondence manner, so that the display screen cover 200 is connected with the boss 410.

The electric control display panel 610 is assembled and matched with the film paster 620 for displaying various functions, compared with an integrated display screen in the prior art, the cost is lower, the display screen cover 200 is installed on the boss 410 and is matched with the display support 400 to play a role in protecting the display screen on the electric control display panel 610. Further, the display screen cover 200 is made of a translucent material, so that the inner structure of the knob 001 cannot be seen from the outside of the display screen cover 200 when the electric cooker is not powered on, the appearance is improved, and when the electric cooker is powered on, the content displayed by the electric control display panel 610 is displayed through the display screen cover 200.

The following describes the structure of the knob 001 for adjusting the function:

the knob 001 further comprises an adjusting assembly, the adjusting assembly is connected with the inner ring 310 and is also used for being connected with an encoder of a display screen, specifically, the adjusting assembly comprises a driving gear 510 and a driven gear 520 which are meshed with each other, and the driving gear 510 is sleeved on the periphery of the boss 410 and is fixedly connected with the inner ring 310; the driven gear 520 is used to connect with an encoder.

The driving gear 510 includes an inner connecting cylinder 511 and engaging teeth, the outer periphery of the boss 410 is located by the movable sleeve of the connecting cylinder 511, the first end of the connecting cylinder 511 passes through the through hole 110 on the panel 100 and is connected with the inner ring 310, the inner ring 310 is connected with the first end of the connecting cylinder 511 in a bonding or clamping manner, in this embodiment, the inner ring 310 is connected with the first end of the connecting cylinder 511 in a clamping manner, as shown in fig. 10, the first end of the connecting cylinder 511 is provided with a plurality of clamping grooves 512, the plurality of clamping grooves 512 are uniformly distributed along the circumferential direction of the connecting cylinder 511, the inner part of the inner ring 310 is provided with clamping protrusions 314 equal in number to the clamping grooves 512, the plurality of clamping protrusions 314 are in one-to-one inserting fit with the plurality of clamping grooves 512, thereby realizing the connection of the knob decoration ring 300 and the driving gear 510.

Further, as shown in fig. 7, the inner ring 310 includes a first ring section 311, a connecting section 312, and a second ring section 313 connected end to end in sequence, an inner diameter of the first ring section 311 is smaller than an inner diameter of the second ring section 313, the first ring section 311 is disposed opposite to the display screen cover 200, the first mounting ring 210 and the second mounting ring 220 on the display screen cover 200 are both disposed between the first ring section 311 and the outer ring 320, the second ring section 313 is disposed opposite to the panel 100, the connecting section 312 is seated on the ring-shaped boss 120, a free end of the second mounting ring 220 extends to the connecting section 312, and the second mounting ring 220 is disposed opposite to and spaced from an inner wall of the connecting section 312. A plurality of snap projections 314 are attached to the inner walls of the first annular section 311 and the connecting section 312, and a first end of the connector barrel 511 is located inside the second annular section 313 and snap fits with the snap projections 314. The setting of first ring segment 311 and second ring segment 313 makes the cross-section of inner ring 310 be the form of bending, the joint is protruding 314 to set up in the department of bending, thereby conveniently realize being connected of inner ring 310 and connecting cylinder 511, the inner ring 310 that the cross-section is the form of bending can realize with the cooperation of first collar 210 and second collar 220 on connecting cylinder 511 and the display screen lid 200 in addition, make the structure of knob 001 compacter, reduce the space that occupies.

The second end of connecting cylinder 511 and demonstration support 400 butt, specifically, be equipped with the spacing groove on the demonstration support 400, the spacing groove extends along boss 410's circumference, the width of spacing groove and connecting cylinder 511's thickness looks adaptation, connecting cylinder 511 is located the spacing inslot with the one end that shows support 400 butt, spacing groove and boss 410 cooperation carry out spacing on the horizontal direction to connecting cylinder 511, stability when improving connecting cylinder 511 and rotating. The engaging teeth of the connecting cylinder 511 and the driven gear 520 are positioned in the cover 720 and engaged with each other, and the driven gear 520 is in transmission connection with the encoder on the electronic control display panel 610.

The embodiment of the utility model provides a domestic appliance includes knob 001, and knob 001 can realize the selection of domestic appliance function and prevent that outside water from getting into in the display screen through the gap between display screen lid 200 and the knob 001 device ring. When the function of the household appliance needs to be adjusted, a user can rotate the knob decoration ring 300, the knob decoration ring 300 drives the connecting cylinder 511 to rotate around the axis of the knob decoration ring, the connecting cylinder 511 drives the driven gear 520 to rotate through the meshing teeth, the driven gear 520 drives the encoder on the electronic control display panel 610 to rotate, so that the working mode of the household appliance is changed, the user can enable the scale marks on the knob decoration ring 300 to be opposite to the function needing to be selected on the display screen cover 200, and the selection of the function is completed. As shown in fig. 4, after external water enters the knob decorative ring 300 from the gap between the display screen cover 200 and the outer ring 320, the water flows downward along the extending direction of the channel 330 and flows out from the outlet of the channel 330, and because the outlet of the channel 330 is located on the side of the annular boss 120 away from the through hole 110, the annular boss 120 can block the water flowing out from the outlet of the channel 330 from entering the through hole 110, thereby protecting the display screen.

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

Claims (16)

1. A knob, comprising:

the display screen comprises a panel (100) provided with a through hole (110) for the display screen to penetrate through, wherein an annular boss (120) is arranged around the edge of the through hole (110);

the display screen cover (200) is arranged on one side of the through hole (110) and is used for covering the display screen;

the knob decorative ring (300) is arranged between the display screen cover (200) and the panel (100) and sleeved outside the annular boss (120); the knob decorative ring (300) is provided with an inner ring (310) and an outer ring (320) which are coaxially arranged, the display screen cover (200) covers the inner ring (310) and has a gap with the outer ring (320); a channel (330) is arranged between the inner ring (310) and the outer ring (320), and the channel (330) extends from the gap to the panel (100).

2. The knob according to claim 1, wherein the inner ring (310) and the outer ring (320) are connected by a plurality of connecting ribs (340), the plurality of connecting ribs (340) are distributed at intervals along the circumference of the knob decoration ring (300), and the inner ring (310), the outer ring (320) and the adjacent connecting ribs (340) jointly form the channel (330).

3. The knob according to claim 2, characterized in that the distance between the inner ring (310) and the outer ring (320) is in the range of 1-10 mm.

4. The knob according to claim 2, wherein the inner ring (310) comprises a first annular section (311), a connecting section (312) and a second annular section (313) which are sequentially connected end to end, the inner diameter of the first annular section (311) is smaller than that of the second annular section (313), the connecting section (312) is seated on the annular boss (120), and the second annular section (313) is sleeved outside the annular boss (120).

5. The knob according to claim 4, characterized in that said display cover (200) is provided with a first mounting ring (210) towards said panel (100), said first mounting ring (210) being interposed between said first annular segment (311) and said outer ring (320).

6. The knob according to claim 5, characterized in that the display cover (200) is provided with a second mounting ring (220) towards the faceplate (100), the inner diameter of the second mounting ring (220) being larger than the outer diameter of the first ring segment (311), the outer diameter of the second mounting ring (220) being smaller than the inner diameter of the first mounting ring (210).

7. The knob according to claim 6, characterized in that a free end of the second mounting ring (220) extends to the connecting section (312).

8. The knob according to claim 4, characterized in that the distance between the second annular section (313) and the outer ring (320) becomes larger from the end where the second annular section (313) is connected with the connection section (312) to the panel (100).

9. The knob according to claim 1, wherein the length of the annular boss (120) from the root end to the free end ranges from 3mm to 15 mm.

10. The knob according to any one of claims 1 to 9, wherein the knob (001) further comprises a display bracket (400) disposed at the other side of the through hole (110), the display bracket (400) has a boss (410), the boss (410) passes through the through hole (110) to be connected with the display screen cover (200), and the boss (410) is provided with a cavity for accommodating a display screen.

11. The knob according to claim 10, further comprising an adjustment assembly connected to said inner ring (310) and adapted to be connected to an encoder of said display screen.

12. The knob according to claim 11, wherein the adjusting assembly comprises a driving gear (510) and a driven gear (520) engaged with each other, the driving gear (510) is rotatably sleeved on the outer circumference of the boss (410) and is fixedly connected with the inner ring (310); the driven gear (520) is used for being connected with the encoder.

13. The knob according to claim 12, wherein the driving gear (510) is fixed to the inner ring (310) by a snap fit.

14. The knob according to claim 13, wherein the inner wall of the inner ring (310) is provided with a plurality of clamping protrusions (314), the driving gear (510) is provided with a plurality of clamping grooves (512), and the plurality of clamping protrusions (314) are clamped with the plurality of clamping grooves (512) in a one-to-one correspondence manner.

15. The knob according to claim 10, wherein said knob (001) further comprises an electronic control display panel (610) and a film sticker (620), said electronic control display panel (610) comprising said display screen, said display screen being inserted into said cavity, said film sticker (620) being disposed over said boss (410).

16. A household appliance, characterized in that it comprises a knob (001) according to any one of claims 1 to 15.

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