CN213389378U

CN213389378U - Washing machine

Info

Publication number: CN213389378U
Application number: CN202022195298.XU
Authority: CN
Inventors: 高洁; 邓开平; 王其建; 高尚; 马杰
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-06-08
Anticipated expiration: 2030-09-29

Abstract

The utility model provides a washing machine, which comprises a box body, a control panel and a knob control unit; the knob control unit comprises a circuit board, an encoder, a knob assembly and a pressing assembly; a touch switch is arranged on the circuit board; the encoder is provided with a fixed inner ring and a rotating outer ring which can rotate relatively, and an accommodating channel with two through ends is arranged in the knob component; the knob component is clamped on the rotating outer ring and is used for driving the rotating outer ring to rotate so as to realize program selection of different functions; the pressing component comprises a light guide part and an elastic part; the light guide piece is arranged in the accommodating channel in a penetrating way; the light guide piece can be clamped on the fixed inner ring in a sliding manner along the axial direction of the fixed inner ring; the light guide part is provided with an accommodating cavity which is opened towards one end of the circuit board; the containing cavity is internally provided with a pressing part for pressing the touch switch when in a pressing position so as to control the starting or the pause of the work of the washing machine. All function controls of the washing machine are integrated on the knob control unit, so that the operation of a user is facilitated, and the experience of the user is improved.

Description

Washing machine

Technical Field

The utility model relates to a washing machine technical field, in particular to washing machine.

Background

A washing machine is a cleaning appliance that washes laundry using mechanical action generated by electric energy. Nowadays, the market demands for household electrical appliances, more and more pay attention to refined user experience, and besides attractiveness, good hand feeling controllability and convenience become important trends of the products.

The control panel of the washing machine is integrated with a plurality of control buttons for controlling the washing machine to select programs (washing, rinsing and other operations) and start/pause the washing machine and a display window for displaying the working information of the washing machine, and is an important component of the automatic control system of the washing machine.

At present, as the functions of the washing machine are more and more, the number of control buttons on the control panel is increased, but the excessive control buttons are inconvenient for the user to operate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a washing machine to each function control integration with washing machine is structural at a knob, so that the user operation.

In order to solve the technical problem, the utility model adopts the following technical scheme:

according to one aspect of the present invention, the present invention provides a washing machine, comprising a box body, a control panel fixed on the box body, and a knob control unit installed on the control panel; the knob control unit comprises a circuit board, an encoder, a knob assembly and a pressing assembly; the circuit board is fixed in the control panel, and a touch switch is arranged on the circuit board; the encoder is provided with a fixed inner ring and a rotating outer ring which can rotate relatively, and the fixed inner ring is fixed on the circuit board and surrounds the touch switch; the knob component is clamped on the rotating outer ring; an accommodating channel with two through ends is arranged in the knob component; the pressing component comprises a light guide part and an elastic part; the light guide piece penetrates through the accommodating channel, and the light guide piece is slidably clamped on the fixed inner ring along the axial direction of the fixed inner ring so as to move between an initial position and a pressing position; the light guide part is provided with an accommodating cavity which is opened towards one end of the circuit board; a pressing part corresponding to the touch switch is arranged in the accommodating cavity towards the circuit board so as to press the touch switch at a pressing position; the elastic piece is accommodated in the accommodating cavity and surrounds the touch switch; the two axial ends of the elastic piece are abutted to the circuit board and the light guide piece.

In some embodiments, the light guide member includes a cylindrical barrel portion, a flat plate portion connected to an end of the barrel portion facing away from the circuit board, and the pressing portion; the inner side of the flat plate part is a plane parallel to the circuit board; the pressing part is convexly arranged on the flat plate part; the elastic piece is abutted against the flat plate part.

In some embodiments, a limiting groove is formed in one end, facing the circuit board, of the inner circumferential wall of the fixed inner ring, and an elastic clamping hook is arranged at one end, facing the circuit board, of the barrel body, and the elastic clamping hook is slidably clamped in the limiting groove and limited in the limiting groove; when the light guide piece is at the initial position, the elastic clamping hook is abutted against the side wall of the limiting groove so as to limit the elastic clamping hook to be separated from the limiting groove.

In some embodiments, an inner ring sliding groove extending along the axial direction of the fixed inner ring is formed in the inner circumferential wall of the fixed inner ring, and a light guide limiting rib is correspondingly arranged on the outer circumferential wall of the barrel portion and slidably connected in the inner ring sliding groove.

In some embodiments, a step is disposed in a portion of the inner ring sliding groove, and when the light guide member is in the pressing position, the light guide limiting rib abuts against the step.

In some embodiments, a light emitting lamp is disposed on the circuit board corresponding to the light guide; the pressing assembly further comprises a knob patch and a light-diffusing film, wherein the knob patch is positioned at one end of the light guide piece, which is far away from the circuit board, and is clamped on the light guide piece; the light diffusing film is positioned between the light guide and the knob patch.

In some embodiments, the periphery of one end of the cylinder part facing the flat plate part is provided with a cylinder clamping protrusion; the flat plate part is provided with an opening corresponding to the clamping projection of the cylinder body; the surface of the knob patch facing the flat plate part is convexly provided with a plurality of elastic arms, and the elastic arms penetrate through the open holes and are clamped on the clamping bulges of the cylinder body.

In some embodiments, the knob assembly includes a knob sleeve and a knob outer ring; the knob sleeve is positioned in the control panel and is clamped on the rotating outer ring; the knob outer ring part is positioned outside the control panel, and the part of the knob outer ring extends into the control panel and is clamped with the knob sleeve.

In some embodiments, an outer ring clamping protrusion is arranged on the outer circumferential wall of the rotating outer ring, a knob clamping hole is formed in the inner circumferential wall of the knob sleeve, and the knob clamping hole is clamped on the outer ring clamping protrusion; notches are arranged on the peripheral wall of the knob sleeve on two sides of the knob clamping hole, so that the peripheral wall of the knob sleeve has elasticity.

In some embodiments, a knob clamping protrusion is arranged on the inner peripheral wall of the knob sleeve, an outer ring clamping hole is arranged on the outer peripheral wall of the knob outer ring, and the outer ring clamping hole is clamped on the knob clamping protrusion; notches are formed in the peripheral wall of the outer ring of the knob, and the two sides of the outer ring clamping hole are provided with notches, so that the peripheral wall of the outer ring of the knob has elasticity; the knob sleeve is provided with an opening corresponding to the knob clamping protrusion, so that the peripheral wall of the knob outer ring can be pressed from the opening, and the outer ring clamping hole and the knob clamping protrusion can be separated.

According to the above technical scheme, the utility model discloses following advantage and positive effect have at least:

in the utility model, the knob component is clamped on the rotating outer ring and is used for driving the rotating outer ring to rotate so as to realize the program selection of different functions; the pressing component comprises a light guide part and an elastic part; the light guide piece is arranged in the accommodating channel in a penetrating way; the light guide piece can be clamped on the fixed inner ring in a sliding manner along the axial direction of the fixed inner ring so as to move between an initial position and a pressing position; the light guide part is provided with an accommodating cavity which is opened towards one end of the circuit board; the containing cavity is provided with a pressing part corresponding to the touch switch towards the circuit board so as to press the touch switch when in a pressing position, thereby having a key function and controlling the starting or the suspension of the work of the washing machine. All function controls of the washing machine are integrated on the knob control unit, so that the operation of a user is facilitated, and the experience of the user is improved.

The light guide piece is slidably clamped on the fixed inner ring along the axial direction of the fixed inner ring and penetrates through the accommodating channel; so that the pressing assembly can move from the initial position to the pressing position. The whole synchronous sliding of the pressing assembly does not need the matching of a plurality of parts, the problem of overlarge stroke or blocking of a single part is avoided, and the pressing reliability is effectively guaranteed.

The elastic piece is accommodated in the accommodating cavity and surrounds the touch switch; the two axial ends of the elastic piece are abutted against the circuit board and the light guide piece, so that the elastic piece cannot interfere with the touch switch, the function of the touch switch is more stable, and the pressing accuracy of the touch switch is effectively guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the washing machine of the present invention.

Fig. 2 is a schematic structural diagram of a knob control unit according to an embodiment of the present invention.

Fig. 3 is an exploded schematic view of a knob control unit according to an embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view of a first view angle of a knob control unit according to an embodiment of the present invention.

Fig. 5 is a schematic cross-sectional view of a second view angle of the knob control unit according to the embodiment of the present invention.

Fig. 6 is a schematic cross-sectional view of a third view angle of the knob controlling unit according to the embodiment of the present invention.

Fig. 7 is a schematic structural diagram of an encoder according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a knob assembly of an embodiment of the washing machine of the present invention.

Fig. 9 is a schematic structural view of a knob sleeve according to an embodiment of the present invention.

Fig. 10 is a schematic structural diagram of a knob outer ring of an embodiment of the washing machine of the present invention.

Fig. 11 is a schematic structural diagram of a pressing assembly according to an embodiment of the present invention.

Fig. 12 is a schematic structural view of a light guide member according to an embodiment of the present invention.

Fig. 13 is a schematic structural diagram of a knob patch according to an embodiment of the present invention.

The reference numerals are explained below:

1. a knob control unit; 2. a control panel; 3. a box body; 100. a circuit board; 110. a touch switch; 200. an encoder; 210. fixing the inner ring; 211. a limiting groove; 212. an inner ring chute; 2121. a step; 220. rotating the outer ring; 221. the outer ring is clamped and convex; 222. an outer ring chute; 300. a knob assembly; 310. a knob sleeve; 311. a knob clamping hole; 312. a knob limiting rib; 313. stopping bulges; 314. the knob is clamped and protruded; 315. a knob chute; 316. an opening; 320. a knob outer ring; 321. an outer ring clamping hole; 322. an outer ring limiting rib; 400. a pressing assembly; 410. a light guide; 411. a barrel portion; 412. a flat plate portion; 413. a pressing part; 414. an elastic clamping hook; 415. light guide limiting ribs; 4151. a limiting part; 416. the cylinder body is clamped and protruded; 417. opening a hole; 420. an elastic member; 430. a knob paster is arranged; 431. a resilient arm; 432. a clamping hole; 440. a light-diffusing film.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1, the washing machine of the present embodiment includes a cabinet 3, a control panel 2 fixed on the cabinet 3, and a knob control unit 1 installed on the control panel 2. Through manual adjustment knob control unit 1, can carry out different program selection, control washing machine and operate with different mode to adapt to different washing conditions.

Control panel 2 inlays on the surface of box 3, and knob control unit 1 part holding is outside control panel 2 in control panel 2's inside, part to manual control knob control unit 1.

Fig. 2 is a schematic structural diagram of a knob control unit according to an embodiment of the present invention. Fig. 3 is an exploded schematic view of a knob control unit according to an embodiment of the present invention.

Referring to fig. 2 and 3, the knob control unit 1 includes a circuit board 100, an encoder 200, a knob assembly 300, and a pressing assembly 400.

The circuit board 100 is fixed inside the control panel 2, and the circuit board 100 is provided with a touch switch 110. The knob assembly 300 is connected to the encoder 200, and the knob assembly 300 rotates to drive the encoder 200 to perform program selection of different functions. The pressing assembly 400 is disposed corresponding to the tact switch 110 so that the tact switch 110 can be pressed to enable the starting or the pausing of the washing machine.

A light emitting lamp (not shown) is disposed on the circuit board 100 around the touch switch 110, and in this embodiment, the light emitting lamp is a patch lamp.

Fig. 4 is a schematic cross-sectional view of a first view angle of a knob control unit according to an embodiment of the present invention. Fig. 5 is a schematic cross-sectional view of a second view angle of the knob control unit according to the embodiment of the present invention. Fig. 6 is a schematic cross-sectional view of a third view angle of the knob controlling unit according to the embodiment of the present invention.

Referring to fig. 4 to 6, in the present embodiment, the pressing assembly 400 is clamped inside the encoder 200, the knob assembly 300 surrounds the pressing assembly 400 and is clamped outside the encoder 200, the knob assembly 300 is formed with a receiving channel with two through ends for receiving the pressing assembly 400, and the knob control unit 1 has a compact structure and occupies fewer positions of the control panel 2.

The encoder 200 has a fixed inner ring 210 and a rotating outer ring 220, which are relatively rotatable, and the fixed inner ring 210 is fixed on the circuit board 100 and surrounds the touch switch 110. The selection of the program is achieved by rotating the outer race 220 relative to the fixed inner race 210.

In this embodiment, a limiting groove 211 is formed on an end of the inner circumferential wall of the fixing inner ring 210 facing the electric circuit board 100. The limiting groove 211 extends along the axial direction of the fixing inner ring 210, and the limiting groove 211 does not penetrate through to the end of the fixing inner ring 210 facing away from the electric circuit board 100 along the length direction.

The stopper groove 211 is provided in plurality along the inner circumference of the fixed inner race 210. In this embodiment, four limiting grooves 211 are uniformly formed.

In this embodiment, an inner ring sliding groove 212 extending along the axial direction of the fixed inner ring 210 is formed on the inner circumferential wall of the fixed inner ring 210. A plurality of inner ring sliding grooves 212 are provided along the inner circumference of the fixed inner ring 210, and steps 2121 are provided in a part of the inner ring sliding grooves 212.

Referring to fig. 7 again, the outer circumferential wall of the rotating outer ring 220 is provided with an outer ring locking protrusion 221, and a side of the outer ring locking protrusion 221 facing away from the circuit board 100 is an inclined surface.

In this embodiment, an outer ring sliding groove 222 is axially formed in the outer peripheral wall of the rotating outer ring 220. The outer ring slide groove 222 is provided in plurality along the outer circumference of the rotation outer ring 220.

Referring to fig. 8, in the present embodiment, the knob assembly 300 includes a knob sleeve 310 and a knob outer ring 320, the knob sleeve 310 is located in the control panel 2 and is clamped to the rotating outer ring 220; the knob outer ring 320 is partially located outside the control panel 2, and partially extends into the control panel 2 to be clamped with the knob sleeve 310. The knob outer ring 320 is screwed on the outer side of the control panel 2 to rotate the rotating outer ring 220 through the knob sleeve 310, so as to select the program.

Referring to fig. 9, the inner peripheral wall of the knob sleeve 310 is provided with a knob locking hole 311 and a knob limiting rib 312 protruding from the inner peripheral wall of the knob sleeve 310, and the knob locking hole 311 is locked on the outer ring locking protrusion 221 of the rotating outer ring 220, so that the knob sleeve 310 is locked on the rotating outer ring 220.

In this embodiment, notches are formed on two sides of the knob clamping hole 311 on the peripheral wall of the knob sleeve 310, so that the peripheral wall of the knob sleeve 310 has elasticity, and the peripheral wall of the knob sleeve 310 can elastically deform along the radial direction of the knob sleeve 310. The elastic deformation of the knob sleeve 310 cooperates with the inclined surface of the outer ring catching protrusion 221 to facilitate quick installation of the knob catching hole 311 and the outer ring catching protrusion 221.

The knob sleeve 310 is sleeved on the outer circumference of the rotating outer ring 220 by using an elastic circumferential wall, so that the knob sleeve can be conveniently dismounted and mounted during maintenance.

In this embodiment, the knob limiting rib 312 is adapted to the outer ring sliding groove 222 of the rotating outer ring 220, and two sides of the knob limiting rib 312 along the circumferential direction of the knob sleeve 310 abut against the outer ring sliding groove 222 to limit the relative rotation between the knob sleeve 310 and the rotating outer ring 220.

The knob limiting rib 312 extends along the axial direction of the rotating outer ring 220, so that when the knob sleeve 310 and the rotating outer ring 220 are clamped in the axial direction, the knob limiting rib 312 is in alignment fit with the outer ring sliding groove 222.

In some embodiments, the knob limiting rib 312 protrudes from the outer peripheral wall of the rotating outer ring 220, and the outer ring sliding groove 222 is correspondingly disposed on the inner peripheral wall of the knob sleeve 310.

In this embodiment, the inner peripheral wall of the knob sleeve 310 is further provided with a stop protrusion 313, so that when the knob sleeve 310 is clamped in the axial direction, the stop protrusion 313 abuts against an end of the rotating outer ring 220 facing away from the circuit board 100, and an axial position between the knob sleeve 310 and the rotating outer ring 220 is defined.

Referring to fig. 9 again, the knob locking hole 311, the knob limiting rib 312 and the stop protrusion 313 are disposed at an end of the knob sleeve 310 facing the rotating outer ring 220 for cooperating with the rotating outer ring 220. The inner peripheral wall of the end of the knob sleeve 310 facing away from the rotating outer ring 220 is provided with a knob locking protrusion 314 and a knob sliding groove 315 for locking and limiting the knob outer ring 320.

In this embodiment, the knob sleeve 310 is provided with an opening 316 corresponding to the knob locking protrusion 314, and the opening 316 penetrates through the peripheral wall of the knob sleeve 310.

The side of the knob card protrusion 314 facing away from the circuit board 100 is beveled.

In this embodiment, the knob sleeve 310 is composed of two similar ring structures with different diameters, a step structure is formed between the two similar ring structures, the knob locking hole 311, the knob limiting rib 312 and the stop protrusion 313 are disposed on the similar ring structure with the small diameter, and the knob locking protrusion 314, the knob sliding groove 315 and the opening 316 are disposed on the similar ring structure with the large diameter.

Referring to fig. 10, an outer ring locking hole 321 and an outer ring limiting rib 322 protruding from the outer circumferential wall of the knob outer ring 320 are formed on the outer circumferential wall of the knob outer ring 320. The outer ring engaging hole 321 engages with the knob engaging protrusion 314 of the knob sleeve 310, so that the knob outer ring 320 engages with the knob sleeve 310.

In this embodiment, the peripheral wall of the knob outer ring 320 is provided with notches at two sides of the outer ring locking hole 321, so that the peripheral wall of the knob outer ring 320 has elasticity, and the peripheral wall of the knob outer ring 320 can elastically deform along the radial direction of the knob sleeve 310. The resilient deformation of the knob outer ring 320 cooperates with the inclined surface of the knob catch 314 to facilitate quick installation of the outer ring catch hole 321 and the knob catch 314.

The knob outer ring 320 is provided on the inner circumference of the knob sleeve 310 by an elastic circumferential wall, so that it is convenient to assemble and disassemble during maintenance.

In this embodiment, after the outer ring engaging hole 321 is engaged with the knob engaging protrusion 314, the peripheral wall of the knob outer ring 320 can be pressed from the opening 316 by the opening 316 of the knob sleeve 310, so that the peripheral wall of the outer ring engaging hole 321 is deformed, and the outer ring engaging hole 321 and the knob engaging protrusion 314 can be separated.

In this embodiment, the outer ring limiting rib 322 is adapted to the knob sliding groove 315 of the knob sleeve 310, and two sides of the outer ring limiting rib 322 along the circumferential direction of the knob sleeve 310 abut against the knob sliding groove 315 to limit the relative rotation between the knob outer ring 320 and the knob sleeve 310.

The outer ring limiting rib 322 extends along the axial direction of the knob sleeve 310, so that when the knob outer ring 320 and the knob sleeve 310 are clamped in the axial direction, the outer ring limiting rib 322 is in alignment fit with the knob sliding groove 315.

In some embodiments, the outer ring limiting rib 322 protrudes from the inner peripheral wall of the knob sleeve 310, and the knob sliding groove 315 is correspondingly disposed on the outer peripheral wall of the knob outer ring 320.

In this embodiment, the knob sleeve 310 and the knob outer ring 320 are both ring-shaped structures, and an accommodating channel is formed inside the knob sleeve and the knob outer ring, and the accommodating channel is through at two ends of the knob sleeve along the axial direction, and is used for the pressing component 400 to pass through.

Referring to fig. 3 and 11, in the present embodiment, the pressing assembly 400 includes a light guide 410, an elastic member 420, a knob patch 430, and a light-diffusing film 440. The pressing assembly 400 is inserted into the receiving channel of the knob assembly 300, and is disposed corresponding to the touch switch 110 on the circuit board 100, for pressing the touch switch 110, so as to start or pause the washing machine.

The pressing assembly 400 is integrally slidably coupled to the fixed inner ring 210 in an axial direction of the fixed inner ring 210, and defines a sliding position by the fixed inner ring 210. When the pressing member 400 is not pressed, it is at an initial position, and after being pressed, it moves toward the trigger switch 110 along the axial direction of the fixed inner ring 210, and presses the trigger switch 110 at the pressed position, and after being pressed, it returns to the initial position under the elastic force of the elastic member 420.

Referring to fig. 11 and 12, in the present embodiment, the light guide 410 is disposed in the receiving channel of the knob assembly 300 and slidably connected to the inner peripheral wall of the fixing inner ring 210 along the axial direction of the fixing inner ring 210, so that when the light guide 410 is pressed from the outer end of the knob assembly 300, the touch switch 110 is pressed.

The light guide 410 includes a cylindrical body 411, a flat plate 412 connected to an end of the cylindrical body 411 away from the circuit board 100, and a pressing portion 413. An accommodating cavity opened towards one end of the circuit board 100 is enclosed between the barrel 411 and the flat plate 412.

The cylindrical portion 411 of the light guide 410 is sleeved in the fixing inner ring 210 and surrounds the touch switch 110. An elastic hook 414 is disposed at an end of the barrel 411 facing the circuit board 100, and the elastic hook 414 is slidably engaged in the limiting groove 211 and limited in the limiting groove 211, so that the light guide 410 can move between an initial position and a pressed position to press the touch switch 110 at the pressed position.

When the light guide 410 is at the initial position, the elastic hook 414 abuts against the sidewall of the limiting groove 211 to limit the elastic hook 414 to be released from the limiting groove 211.

In this embodiment, the outer peripheral wall of the barrel 411 is correspondingly provided with a light guiding limiting rib 415, the light guiding limiting rib 415 is slidably connected to the inner ring sliding groove 212, and the light guiding limiting rib 415 abuts against the side wall of the inner ring sliding groove 212 along the circumferential side wall of the fixed inner ring 210, so as to limit the rotation of the light guiding member 410 relative to the fixed inner ring 210.

The inner side of the flat plate portion 412 is a plane parallel to the circuit board 100; the pressing portion 413 protrudes from the flat portion 412 toward the circuit board 100, and corresponds to the trigger switch 110, so as to press the trigger switch 110 at a pressing position.

In this embodiment, a step 2121 is disposed in a part of the inner ring sliding groove 212, and when the light guide 410 is at the pressing position, the light guide limiting rib 415 abuts against the step 2121.

In this embodiment, a limiting portion 4151 is formed on a portion of the light guiding limiting rib 415, and when the light guiding member 410 is at the pressing position, the limiting portion 4151 abuts against an end of the fixed inner ring 210 away from the circuit board 100.

By limiting the pressing position of the light guide member 410, the light guide member 410 can be effectively prevented from pressing the circuit board 100, so as to protect the circuit board 100.

A cylinder clamping protrusion 416 is arranged on the periphery of one end of the cylinder part 411 facing the flat plate part 412; the flat plate portion is provided with an opening 417 corresponding to the cylinder body locking projection 416.

Referring to fig. 11 and 12 again, the elastic element 420 is accommodated in the accommodating cavity of the light guide element 410 and surrounds the touch switch 110, and two axial ends of the elastic element 420 abut against the circuit board 100 and the light guide element 410, so as to prevent the touch switch 110 from being pressed by a spring, thereby effectively ensuring the pressing accuracy of the touch switch 110.

In this embodiment, the elastic member 420 abuts against the flat plate portion 412 of the light guide member 410, and the inner side surface of the flat plate portion 412 is parallel to the circuit board 100, so that the elastic member 420 is not easy to slide on the flat plate portion 412 and the circuit board 100, thereby effectively ensuring the stability of the elastic member 420.

In this embodiment, the elastic member 420 is a compression spring, and is clamped between the flat plate portion 412 of the light guide 410 and the circuit board 100.

Referring to fig. 13, the knob patch 430 is located at an end of the light guide 410 away from the circuit board 100 and is clipped on the light guide 410.

In this embodiment, the knob patch 430 is attached to the side of the flat plate portion 412 opposite to the barrel portion 411, a plurality of elastic arms 431 are convexly disposed on a surface of the knob patch 430 facing the flat plate portion 412, the elastic arms 431 are inserted into the openings 417 of the flat plate portion 412, the elastic arms 431 are disposed in the engaging holes 432, and the elastic arms 431 are engaged with the barrel engaging protrusions 416 through the engaging holes.

The light-diffusing film 440 is located between the light guide 410 and the knob patch 430, and after the light-emitting lamps on the circuit board 100 are turned on, the light source is transmitted to the light-diffusing film 440 through the light guide 410, and the start/pause key on the knob patch 430 is turned on by halation of the light-diffusing film 440.

In the present invention, the knob assembly 300 is fastened to the rotating outer ring 220 for driving the rotating outer ring 220 to rotate, so as to realize the program selection of different functions; the pressing assembly 400 includes a light guide 410 and an elastic member 420; the light guide member 420 is inserted into the accommodating channel; the light guide 410 is slidably engaged with the fixing inner ring 210 along the axial direction of the fixing inner ring 210 to be movable between an initial position and a pressed position; the light guide 410 is provided with an accommodating cavity opened toward one end of the circuit board 100; the pressing portion 413 corresponding to the touch switch 110 is disposed in the accommodating cavity toward the circuit board 100, so as to press the touch switch 110 at a pressing position, thereby providing a key function to control the start or pause of the washing machine. The washing machine integrates all function controls on the knob control unit 1, so that the operation of a user is facilitated, and the user experience is improved.

The light guide member 410 is slidably clamped on the fixed inner ring 210 along the axial direction of the fixed inner ring 210, and the light guide member 410 is arranged in the accommodating channel in a penetrating manner; so that the pressing assembly 400 can move from the initial position to the pressing position. The whole synchronous sliding of the pressing assembly 4000 does not need the matching of a plurality of parts, the problem of overlarge stroke or jamming of a single part is avoided, and the pressing reliability is effectively ensured.

The elastic member 420 is accommodated in the accommodating cavity and surrounds the touch switch 110; the two axial ends of the elastic member 420 abut against the circuit board 100 and the light guide member 410, so that the elastic member 420 does not interfere with the touch switch 110, the function of the touch switch 110 is more stable, and the pressing accuracy of the touch switch 110 is effectively ensured.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A washing machine comprises a box body, a control panel fixed on the box body and a knob control unit arranged on the control panel; characterized in that, the knob control unit includes:

the circuit board is fixed inside the control panel, and a touch switch is arranged on the circuit board;

the encoder is provided with a fixed inner ring and a rotating outer ring which can rotate relatively, and the fixed inner ring is fixed on the circuit board and surrounds the touch switch;

the knob assembly is clamped on the rotating outer ring; an accommodating channel with two through ends is arranged in the knob component;

the pressing assembly comprises a light guide part and an elastic part; the light guide piece penetrates through the accommodating channel, and the light guide piece is slidably clamped on the fixed inner ring along the axial direction of the fixed inner ring so as to move between an initial position and a pressing position; the light guide part is provided with an accommodating cavity which is opened towards one end of the circuit board; a pressing part corresponding to the touch switch is arranged in the accommodating cavity towards the circuit board so as to press the touch switch at a pressing position; the elastic piece is accommodated in the accommodating cavity and surrounds the touch switch; the two axial ends of the elastic piece are abutted to the circuit board and the light guide piece.

2. The washing machine according to claim 1, wherein the light guide member includes a cylindrical barrel portion, a flat plate portion connected to an end of the barrel portion facing away from the circuit board, and the pressing portion; the inner side of the flat plate part is a plane parallel to the circuit board; the pressing part is convexly arranged on the flat plate part; the elastic piece is abutted against the flat plate part.

3. The washing machine as claimed in claim 2, wherein the inner peripheral wall of the fixed inner ring is provided with a limiting groove at one end facing the circuit board, and the barrel body is provided with an elastic hook at one end facing the circuit board, and the elastic hook is slidably engaged in the limiting groove and limited in the limiting groove; when the light guide piece is at the initial position, the elastic clamping hook is abutted against the side wall of the limiting groove so as to limit the elastic clamping hook to be separated from the limiting groove.

4. The washing machine as claimed in claim 2, wherein an inner ring sliding groove extending along the axial direction of the fixed inner ring is formed on the inner circumferential wall of the fixed inner ring, and a light guide limiting rib is correspondingly formed on the outer circumferential wall of the drum body and slidably connected in the inner ring sliding groove.

5. The washing machine as claimed in claim 4, wherein a step is provided in a part of the inner ring chute, and the light guide limiting rib abuts against the step when the light guide member is in the pressing position.

6. The washing machine as claimed in claim 2, wherein a light emitting lamp is provided on the circuit board corresponding to the light guide; the pressing assembly further comprises a knob patch and a light-diffusing film, wherein the knob patch is positioned at one end of the light guide piece, which is far away from the circuit board, and is clamped on the light guide piece; the light diffusing film is positioned between the light guide and the knob patch.

7. A washing machine as claimed in claim 6, wherein a drum catching protrusion is provided on an outer circumference of one end of the drum portion facing the flat plate portion; the flat plate part is provided with an opening corresponding to the clamping projection of the cylinder body; the surface of the knob patch facing the flat plate part is convexly provided with a plurality of elastic arms, and the elastic arms penetrate through the open holes and are clamped on the clamping bulges of the cylinder body.

8. The washing machine as claimed in claim 1, wherein the knob assembly includes a knob sleeve and a knob outer ring; the knob sleeve is positioned in the control panel and is clamped on the rotating outer ring; the knob outer ring part is positioned outside the control panel, and the part of the knob outer ring extends into the control panel and is clamped with the knob sleeve.

9. The washing machine as claimed in claim 8, wherein an outer ring locking protrusion is provided on an outer circumferential wall of the rotating outer ring, a knob locking hole is provided on an inner circumferential wall of the knob sleeve, and the knob locking hole is locked on the outer ring locking protrusion; notches are arranged on the peripheral wall of the knob sleeve on two sides of the knob clamping hole, so that the peripheral wall of the knob sleeve has elasticity.

10. The washing machine as claimed in claim 8, wherein a knob locking protrusion is provided on an inner circumferential wall of the knob sleeve, an outer ring locking hole is provided on an outer circumferential wall of the knob outer ring, and the outer ring locking hole is locked on the knob locking protrusion; notches are formed in the peripheral wall of the outer ring of the knob, and the two sides of the outer ring clamping hole are provided with notches, so that the peripheral wall of the outer ring of the knob has elasticity; the knob sleeve is provided with an opening corresponding to the knob clamping protrusion, so that the peripheral wall of the knob outer ring can be pressed from the opening, and the outer ring clamping hole and the knob clamping protrusion can be separated.