Display control device and refrigerator

Abstract

This application relates to the field of electrical equipment technology and discloses a display and control device and a refrigerator. The display and control device includes a mounting body, an encoder, a knob, and a circuit board. The mounting body has a second mating part. The knob has a receiving cavity inside and a first mating part surrounding the receiving cavity. The second mating part rotatably engages with the first mating part, and a water-blocking structure exists between the second and first mating parts. The encoder is disposed in the receiving cavity and includes a rotating part and a fixed part. The fixed part is fixedly connected to the mounting body, and the rotating part rotatably engages with the fixed part. The knob is fixedly connected to the rotating part. The circuit board is disposed in the receiving cavity, fixedly disposed relative to the fixed part, and electrically connected to the encoder. This improves the waterproof performance.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and in particular to a display and control device and a freezer. Background Technology

[0002] This section provides only background information relevant to this application and is not necessarily prior art.

[0003] Household appliances, such as refrigerators and freezers, can be equipped with display and control devices. These devices can show the operating status of the appliances and allow users to adjust their operating modes, temperatures, and other settings. In some technologies, the display and control device includes a rotary knob adjustment component. This component works with an encoder to adjust and control the temperature or operating mode. However, such display and control devices with rotary knob adjustment components are prone to damage or compromised reliability due to insufficient waterproofing. Utility Model Content

[0004] The purpose of this application is to at least alleviate the problem of insufficient waterproof performance in display and control devices. This purpose is achieved through the following technical solution:

[0005] The first aspect of this application discloses a display and control device, comprising a mounting body, an encoder, a knob, and a circuit board. The mounting body has a second mating portion; the knob has a receiving cavity inside and a first mating portion surrounding the receiving cavity; a second mating portion rotatably engages with the first mating portion, and a water-blocking structure exists between the second mating portion and the first mating portion; the encoder is disposed within the receiving cavity, and the encoder includes a rotating portion and a fixed portion; the fixed portion is fixedly connected to the mounting body, the rotating portion rotatably engages with the fixed portion, and the knob is fixedly connected to the rotating portion; the circuit board is disposed in the receiving cavity, fixedly disposed relative to the fixed portion, and electrically connected to the encoder.

[0006] According to the display and control device of this application, the mounting body and the knob are rotatably engaged through a second mating part and a first mating part. The rotating part of the encoder is connected to the knob, and the fixed part of the encoder is connected to the mounting body. Rotating the knob drives the rotating part of the encoder to rotate, thereby inputting corresponding control signals to the circuit board. The knob is provided with a receiving cavity, and the encoder and circuit board can be built into the receiving cavity of the knob. The display and control device has a good overall appearance and a high degree of structural integration. At the same time, there is a water-blocking structure between the second mating part and the first mating part, which can reduce the possibility of external moisture entering the receiving cavity of the knob from the mating position between the mounting body and the knob, thus reducing the possibility of damaging the encoder, circuit board and other components. This improves the waterproof performance of the display and control device and helps to improve the reliability and service life of the display and control device.

[0007] In addition, the display and control device according to this application may also have the following additional technical features:

[0008] In some embodiments of this application, the knob includes a main ring that surrounds and forms the receiving cavity. The main ring is connected to the rotating part. The first mating part is disposed on the outer periphery of the main ring. The second mating part includes a first stop part that surrounds the outer side of the main ring and forms the water-blocking structure.

[0009] In some embodiments of this application, the first mating portion includes a first annular groove, and the first stop portion is at least partially inserted into the first annular groove.

[0010] In some embodiments of this application, the second mating portion includes a second annular groove, the first stop portion is at least partially surrounded on one side of the second annular groove, the first mating portion includes a first convex ring portion, the first convex ring portion is surrounded on the side of the first annular groove opposite to the main ring, and the first convex ring portion is inserted into the second annular groove.

[0011] In some embodiments of this application, the display and control device further includes a panel assembly, the panel assembly including a first panel along the axial direction of the knob, the first panel being disposed at one end of the knob opposite to the mounting body and covering the receiving cavity.

[0012] In some embodiments of this application, a waterproof annular groove is provided at the end of the knob component away from the mounting body. The waterproof annular groove is arranged around the circumference of the knob component. The first panel covers the waterproof annular groove. The knob component has a first water-blocking portion, which surrounds the side of the waterproof annular groove facing the receiving cavity.

[0013] In some embodiments of this application, the knob further includes a second water-blocking portion and a second connecting portion. The first water-blocking portion, the second water-blocking portion, and the second connecting portion form the waterproof annular groove. The second water-blocking portion is disposed opposite to the first water-blocking portion, and the second water-blocking portion is located on the side of the first water-blocking portion away from the receiving cavity. The second connecting portion is connected between the second water-blocking portion and the first water-blocking portion. The second water-blocking portion protrudes in a direction away from the second connecting portion relative to the first water-blocking portion. The first panel is located on the side of the second water-blocking portion facing the receiving cavity.

[0014] In some embodiments of this application, a plurality of reinforcing support portions are provided at intervals along the circumference of the waterproof ring groove, and a communicating gap is provided between the reinforcing support portion and the first water-blocking portion and / or between the reinforcing support portion and the second water-blocking portion.

[0015] In some embodiments of this application, the knob includes a main body ring that surrounds the receiving cavity. The main body ring is connected to the rotating part. An annular flange is provided at one end of the main body ring away from the mounting body. Along the radial direction of the main body ring, the annular flange protrudes outward relative to the main body ring and is arranged in a circle along the circumference of the main body ring. Along the axial direction of the main body ring, a waterproof ring groove is provided at the end of the annular flange away from the mounting body.

[0016] In some embodiments of this application, along the axial direction of the knob, the encoder and the panel assembly are respectively disposed on both sides of the circuit board, the panel assembly is connected to and relatively fixed to the circuit board, the panel assembly and the knob are clearance-fitted, and the knob is configured to be rotatable around the panel assembly.

[0017] In some embodiments of this application, the panel assembly further includes a display panel, which is fixedly connected to the circuit board, and the first panel is connected to the side of the display panel opposite to the circuit board.

[0018] In some embodiments of this application, the knob includes a main body ring, with an annular portion at one end of the main body ring facing the mounting body. The annular portion is located inside the main body ring along its radial direction. The main body ring and the annular portion enclose the receiving cavity. The annular portion is arranged around the outside of the rotating part and is connected to the rotating part.

[0019] In some embodiments of this application, the annular portion and the rotating portion are engaged by the first engaging component.

[0020] In some embodiments of this application, the display and control device further includes a fixing member, the fixing part being connected to the mounting body via the fixing member, wherein the fixing member includes a base part and an assembly part connected to the base part, the base part being fixedly connected to the mounting body, the assembly part being located on the side of the base part away from the mounting body and being connected to the fixing member.

[0021] In some embodiments of this application, the rotating part is disposed on the outer periphery of the assembly part, a limiting ring is provided on the seat part, and the rotating part is located between the limiting ring and the assembly part.

[0022] In some embodiments of this application, the seat portion is snapped into the mounting body; and / or, a first positioning component is provided between the mounting body and the seat portion, the first positioning component being used to guide the seat portion and position the mounting position of the seat portion;

[0023] And / or, the assembly part is engaged with the fixing part.

[0024] In some embodiments of this application, the base portion and the assembly portion are provided with a first wiring hole that is mutually connected, and the mounting body is provided with a second wiring hole. The first wiring hole and the second wiring hole are connected, and the wire harness connected to the circuit board passes through the first wiring hole and the second wiring hole.

[0025] In some embodiments of this application, the mounting body is provided with a mounting groove, the second annular groove is arranged around the mounting groove, and one end of the knob is inserted into the mounting groove.

[0026] In some embodiments of this application, the mounting body includes a mounting plate and a receiving portion. The mounting plate is provided with a through hole. One side of the mounting plate is used to connect to the cabinet of a household appliance. The receiving portion is connected to the other side of the mounting plate, and the receiving portion surrounds the through hole and cooperates with the through hole to form the mounting groove.

[0027] The second aspect of this application provides a freezer, including a freezer body and a display and control device as described in this application or any embodiment thereof. The freezer body has a cabinet, and the mounting body of the display and control device is connected to the cabinet.

[0028] The freezer described in this application has the same beneficial effects as the display and control device proposed in this application or any embodiment of this application.

[0029] In addition, the freezer according to this application may also have the following additional technical features:

[0030] In some embodiments of this application, the first wall includes a housing, the housing has a mounting hole, the mounting body is mounted on the inner wall surface of the housing, the knob passes through the mounting hole, and the knob at least partially protrudes from the outer wall surface of the housing.

[0031] In some embodiments of this application, the first wall further includes a thermal insulation layer located inside the outer shell and covering the mounting body.

[0032] In some embodiments of this application, a second positioning component is further provided between the mounting body and the first wall, the second positioning component being used to position the mounting position and mounting direction of the mounting body. Attached Figure Description

[0033] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0034] Figure 1 This is a schematic diagram of the display and control device proposed in some embodiments of this application;

[0035] Figure 2 This is a schematic diagram of the split design of the display and control device proposed in some embodiments of this application;

[0036] Figure 3 This is a cross-sectional schematic diagram of a display and control device proposed in some embodiments of this application;

[0037] Figure 4 This is a schematic structural diagram of the mounting body proposed in some embodiments of this application from one perspective;

[0038] Figure 5 This is a structural schematic diagram of the mounting body proposed in some embodiments of this application from another perspective;

[0039] Figure 6 This is a schematic diagram of the encoder structure from one perspective, based on some embodiments of this application;

[0040] Figure 7 This is a schematic diagram of the encoder proposed in some embodiments of this application from another perspective;

[0041] Figure 8 This is a schematic diagram of the structure of a knob component proposed in some embodiments of this application from one perspective;

[0042] Figure 9 This is a schematic diagram of the structure of the knob component proposed in some embodiments of this application from another perspective;

[0043] Figure 10 This is a cross-sectional schematic diagram of a knob component proposed in some embodiments of this application;

[0044] Figure 11 This is a schematic diagram of the structure of the fastener proposed in some embodiments of this application;

[0045] Figure 12 This is a schematic diagram of the installation body installed in the housing according to some embodiments of this application;

[0046] Figure 13 for Figure 12 Enlarged view of part A;

[0047] Figure 14 This is a simplified schematic diagram of the structure of a freezer proposed in some embodiments of this application;

[0048] Figure 15 for Figure 14 BB cross-sectional view;

[0049] Figure 16 for Figure 15Enlarged view of part C;

[0050] Figure 17 This is a schematic diagram of a box body proposed in some embodiments of this application from one perspective;

[0051] Figure 18 for Figure 17 Enlarged view of part D.

[0052] The attached figures are labeled as follows:

[0053] 10. Display and control device; 20. Cabinet; 21. First wall; 22. Outer shell; 23. Inner wall surface; 24. Positioning protrusion; 25. Mounting hole; 26. Insulation layer;

[0054] 100. Mounting body; 101. Mounting plate; 102. Receiving part; 103. Mounting groove; 105. Wiring part; 106. Second wiring hole; 109. Second mating part; 110. Second annular groove; 111. First stop part; 1111. Water-blocking structure; 112. Second stop part; 113. First connecting part; 120. Third snap-fit ​​component; 121. Third snap-fit; 130. First positioning component; 131. Positioning pin; 140. Second positioning component; 141. Positioning groove;

[0055] 200, encoder; 210, rotating part; 211, first snap-fit ​​component; 212, first buckle; 220, fixing part; 221, second slot; 2211, abutting surface; 230, first through hole;

[0056] 300. Knob; 301. Receiving cavity; 302. First annular groove; 303. First mating part; 310. Main body ring; 311. Annular part; 3111. First annular part; 3112. Second annular part; 312. First slot; 320. Annular flange; 330. First convex annular part; 340. Waterproof annular groove; 341. First water-blocking part; 342. Second water-blocking part; 343. Second connecting part; 344. Reinforcing support part; 345. Communicating gap; 350. Second convex annular part;

[0057] 400. Circuit board;

[0058] 500. Panel assembly; 510. First panel; 520. Display panel;

[0059] 600, Fixing component; 610, Base body; 611, Positioning hole; 612, Connecting hole; 614, First reinforcing part; 615, Second reinforcing part; 620, Assembly part; 621, Second snap-fit ​​component; 622, Second snap-fit; 630, First wiring hole; 640, Limiting ring. Detailed Implementation

[0060] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0061] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0062] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0063] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations.

[0064] like Figures 1 to 18As shown, this application provides a display and control device 10, including a mounting body 100, an encoder 200, a knob 300, and a circuit board 400.

[0065] The knob 300 has an internal receiving cavity 301, and the encoder 200 is disposed within the receiving cavity 301. The encoder 200 includes a rotating part 210 and a fixed part 220. The fixed part 220 is fixedly connected to the mounting body 100, and the rotating part 210 is rotatably engaged with the fixed part 220. The knob 300 is fixedly connected to the rotating part 210 (this fixed connection can be understood as the knob 300 and the rotating part 210 remaining relatively fixed at least in the circumferential direction of the knob 300). The circuit board 400 is disposed within the receiving cavity 301 and is electrically connected to the encoder 200.

[0066] The mounting body 100 is provided with a second mating part 109, and the knob part 300 has a first mating part 303. The first mating part 303 is arranged around the receiving cavity 301. The second mating part 109 is rotatably mated with the first mating part 303, and a water-blocking structure 1111 is provided between the second mating part 109 and the first mating part 303.

[0067] The water-blocking structure 1111 can be a part of the second mating part 109 or the first mating part 303, or it can be an additional structural component provided on the basis of the second mating part 109 and the first mating part 303. The water-blocking structure 1111 is located outside the accommodating cavity 301 and can block water vapor at the mating position of the second mating part 109 and the first mating part 303 to reduce the possibility of water vapor entering the accommodating cavity 301.

[0068] For example, the second mating part 109 and the first mating part 303 can be a groove and a protrusion mating structure, and the groove and protrusion mating position of the second mating part 109 and the first mating part 303 can form a water-blocking structure 1111.

[0069] In this embodiment of the display and control device, the mounting body 100 and the knob 300 are rotatably engaged through the second mating part 109 and the first mating part 303. The rotating part 210 of the encoder 200 is connected to the knob 300, and the fixing part 220 of the encoder 200 is connected to the mounting body 100. By rotating the knob 300, the rotating part of the encoder 200 can be rotated, and corresponding control signals can be input to the circuit board 400.

[0070] In this embodiment, the display and control device 10, during use, the knob 300 drives the rotating part 210 to rotate, while the fixing part 220, the mounting body 100, and the circuit board 400 are relatively fixed. The circuit board 400 can be directly connected to the fixing part 220; for example, the circuit board 400 can be directly connected to the fixing part 220 via its back to maintain relative fixation. Alternatively, the circuit board 400 can be connected to the mounting body 100 to maintain relative fixation with the fixing part 220.

[0071] The knob 300 is provided with a receiving cavity 301, in which the encoder 200 and circuit board 400 can be built into the receiving cavity 301 of the knob 300. The overall appearance of the display and control device is good and the structural integration is high. At the same time, there is a water-blocking structure 1111 between the second mating part 109 and the first mating part 303, which can reduce the possibility of external moisture entering the receiving cavity 301 of the knob 300 from the mating position between the mounting body 100 and the knob 300, and damaging the encoder 200, circuit board 400 and other components. This improves the waterproof performance of the display and control device and helps to improve the reliability and service life of the display and control device.

[0072] According to some embodiments of this application, optionally, in some embodiments, the knob 300 includes a main body ring 310, the main body ring 310 surrounds and forms a receiving cavity 301, the main body ring 310 is connected to the rotating part 210, the first mating part 303 is disposed on the outer periphery of the main body ring 310, and the second mating part 109 includes a first stop part 111, the first stop part 111 is disposed around the outside of the main body ring 310 and forms a water-blocking structure.

[0073] The first stop portion 111 can be an integral structure with the mounting body 100, and it can protrude relative to the main body of the mounting body 100.

[0074] The first stop 111 surrounds the outer side of the main body ring 310. Moisture entering from the mating position between the mounting body 100 and the knob 300 can be stopped by the first stop 111, thereby reducing the possibility of moisture entering the interior of the mounting body 100.

[0075] like Figure 3 As shown, optionally, the second mating portion 109 may include a second annular groove 110, which may be formed by a partial recess in the mounting body 100. A first stop portion 111 is at least partially surrounding the second annular groove 110. The second annular groove 110 surrounds the encoder 200, and the first stop portion 111 is located on the side of the second annular groove 110 facing the encoder 200. The first mating portion 303 includes a first protruding ring portion 330, which is inserted into the second annular groove 110, and the first protruding ring portion 330 and the second annular groove 110 are configured for a sliding fit.

[0076] The display and control device 10 in this embodiment can be applied to household appliances. By rotating the encoder 200's rotating part 210 through the knob 300, it can be used to adjust the operating mode, operating level, temperature, etc. of the household appliances.

[0077] For example, in some embodiments, the household appliance may be a cold storage device, such as a refrigerator or freezer, and the knob 300 is configured to adjust the set temperature of the cold storage device.

[0078] The mounting body 100 is the mounting carrier for the display and control device 10, which can be used to connect to the cabinet 20 of the household appliance to install the display and control device 10 on the household appliance.

[0079] The knob 300 may be a metal part, and it may be a one-piece molded structure.

[0080] The encoder 200 is used to detect the rotation angle of the knob 300 to determine the desired operating state. Specifically, the encoder 200 has a detection component capable of measuring the rotation angle of the rotating part 210 relative to the fixed part 220. The knob 300 drives the rotating part 210 to rotate. The encoder 200 determines the rotation angle of the knob 300 by detecting the rotation angle of the rotating part 210 relative to the fixed part 220, and sends the information corresponding to this rotation angle to the main control component of the home appliance via the circuit board 400. The main control component determines the information input by the user through the knob 300 based on a preset built-in program and the received information, and adjusts the operating state of the home appliance accordingly.

[0081] For example, the encoder 200 may be a photoelectric encoder 200, whose detection component may include a photoelectric sensor and a code disk that cooperates with the photoelectric sensor. One of the code disk and the photoelectric sensor may be disposed in the fixed part 220 and the other in the rotating part 210. The photoelectric sensor may be used to receive changes in light and convert them into electrical signals, and send the electrical signals to the circuit board 400.

[0082] For example, the encoder 200 may also be a detection component, such as a magnetoelectric encoder or a capacitive encoder.

[0083] The fixing part 220 of the encoder 200 is fixedly installed on the mounting body 100. The fixing part 220 and the mounting body 100 can be detachably connected or non-detachably connected. The fixing part 220 and the rotating part 210 of the encoder 200 can be ring-shaped structures. The fixing part 220 can be the inner ring of the encoder 200, and the rotating part 210 can be the outer ring of the encoder 200. The rotating part 210 can be sleeved on the outer periphery of the fixing part 220.

[0084] It should be noted that in some other implementations (which are not shown in the accompanying drawings), the fixing part 220 may also be arranged sequentially with the rotating part 210 along the axial direction and rotate in cooperation. In this case, the fixing part 220 may be located on the side of the rotating part 210 that is axially away from the mounting body 100, and the fixing part 220 may be located on the side of the annular part 311 (specifically the second annular part 3112) that is away from the mounting body 100, and cooperate with the annular part 311 in an axial upper limit.

[0085] Optionally, a first through hole 230 may be provided at the center of the fixing part 220, through which the wire harness of the circuit board 400 can pass.

[0086] The mounting body 100 can be a one-piece molded structure. The mounting body 100 can be partially recessed to form a second annular groove 110. The first stop 111 is part of the mounting body 100, specifically surrounding one of the groove walls forming the second annular groove 110. The second annular groove 110 can be arranged around the receiving cavity 301 in a circle.

[0087] The second annular groove 110 can be a groove with a U-shaped, circular arc, or elliptical arc cross-section. That is, the groove wall of the second annular groove 110 can also include a second stop portion 112 and a first connecting portion 113.

[0088] For example, the second mating part 109 further includes a first connecting part 113 and a second stop part 112. The first stop part 111, the first connecting part 113 and the second stop part 112 surround to form a second annular groove 110. The second stop part 112 and the first stop part 111 are disposed opposite to each other and are located on opposite sides of the first convex ring part 330, respectively. The first connecting part 113 connects the first stop part 111 and the second stop part 112.

[0089] The first connecting part 113 and the second stop part 112 are both groove walls surrounding the second annular groove 110.

[0090] The knob 300 can be a one-piece molded structure. The first protruding ring 330 of the knob 300 can be a ring-shaped part, and the first protruding ring 330 is adapted to the second annular groove 110. It can be inserted into the second annular groove 110 and has sliding gaps with each groove wall surrounding the second annular groove 110 to facilitate the rotation of the knob 300.

[0091] In this embodiment, the display and control device 10 has a second annular groove 110 on the mounting body 100. The first convex ring portion 330 of the knob 300 is disposed in the second annular groove 110. The first stop portion 111 surrounding the second annular groove 110 is located on the side of the first convex ring portion 330 facing the receiving cavity 301, so that the first convex ring portion 330 and the second annular groove 110 cooperate to form a waterproof structure between the knob 300 and the mounting body 100. When external moisture enters the second annular groove 110 (external moisture enters the second annular groove 110 through the connection gap between the mounting body 100 and the knob 300), or when moisture on the knob 300 accumulates at the first convex ring portion 330, the moisture can be stopped by the first stop portion 111 and flow away along the first stop portion 111, reducing the possibility of moisture entering the receiving cavity 301 of the knob 300 and damaging the encoder 200, circuit board 400 and other devices, improving waterproof performance, and helping to improve the reliability and service life of the device. Furthermore, by using the second annular groove 110 and the first stop portion 111 as a waterproof structure, the sealing ring can be reduced or eliminated, which not only simplifies the structure of the display and control device 10, but also reduces the rotational resistance of the knob 300, improves the smoothness of the knob 300's rotation, and enhances the user experience. By setting the second annular groove 110, the first mating portion 303 of the knob 300 can be partially embedded in the second annular groove 110, which can also reduce the axial dimension of the display and control device.

[0092] Optionally, the first convex ring portion 330 is clearance-fitted with the groove wall surrounding the second annular groove 110.

[0093] Specifically, such as Figure 3As shown, the first convex ring portion 330 is inserted between the first stop portion 111 and the second stop portion 112. The first convex ring portion 330 and the first stop portion 111, the first convex ring portion 330 and the second stop portion 112, and the first convex ring portion 330 and the first connecting portion 113 can all be configured as clearance fits. Among them, the clearances between the first convex ring portion 330 and the first stop portion 111, the first convex ring portion 330 and the second stop portion 112, and the first convex ring portion 330 and the first connecting portion 113 should be set as small as possible. That is to say, without interfering with the rotation of the first convex ring portion 330 relative to the mounting body 100, the clearance between the groove wall of the second annular groove 110 surrounding the mounting body 100 and the first convex ring portion 330 should be as small as possible. Optionally, the gaps between the first convex ring portion 330 and the first stop portion 111, the gaps between the first convex ring portion 330 and the second stop portion 112, and the gaps between the first convex ring portion 330 and the first connecting portion 113 can be set to less than or equal to 0.5 mm. Specifically, the gaps between the first convex ring portion 330 and the first stop portion 111, the gaps between the first convex ring portion 330 and the second stop portion 112, and the gaps between the first convex ring portion 330 and the first connecting portion 113 can each be set to less than or equal to 0.3 mm, specifically from 0.2 mm to 0.3 mm.

[0094] Understandably, the clearance fit of the mounting body 100 with the first protruding ring 330 through the second annular groove 110 allows for clearance fit between the mounting body 100 and the knob 300, reducing the possibility of interference from the mounting body 100 when the knob 300 rotates, and improving the smoothness and convenience of turning the knob 300.

[0095] The first protruding ring portion 330 can be connected to the outer periphery of the main body ring 310. The first protruding ring portion 330 and the main body ring 310 can be an integral structure, specifically, they can be a one-piece molded structure.

[0096] The first convex ring 330 is disposed on the outside of the main body ring 310 and inserted into the second annular groove 110. The first convex ring 330 and the first stop 111 form a waterproof protective layer on the outside of the main body ring 310, while the encoder 200 and the circuit board 400 are located inside the main body ring 310. This can form a multi-layer protection, improve the waterproof performance of the display and control device 10, and reduce the possibility of water vapor entering the accommodating cavity 301 and damaging the encoder 200 and the circuit board 400.

[0097] Optionally, the first mating part 303 includes a first annular groove 302, and the first stop part 111 is at least partially inserted into the first annular groove 302.

[0098] For example, such as Figure 3As shown, along the axial direction of the main ring 310, one end of the first convex ring 330 is fixedly connected to the main ring 310, and the other end of the first convex ring 330 forms a first annular groove 302 between the outer peripheral surface of the main ring 310 and the first stop 111 is inserted into the first annular groove 302.

[0099] like Figures 2 to 5 As shown, the mounting body 100 may be provided with a mounting groove 103, and one end of the main body ring 310 is inserted into the mounting groove 103. The mounting body 100 can be used to connect with household appliances to install the display and control device 10 on the household appliances. The mounting body 100 is provided with a mounting groove 103, and one end of the knob 300 is provided in the mounting groove 103. This can reduce the size of the knob 300 protruding relative to the mounting body 100, and the size of the display and control device 10 exposed on the outside of the wall of the household appliance is smaller, which reduces the thickness of the display and control device 10, reduces the possibility of the display and control device 10 being damaged by bumps, improves the user experience, and at the same time reduces the packaging size of the household appliances and reduces transportation costs.

[0100] Optionally, the first stop portion 111 surrounds the circumference of the mounting groove 103 and can be inserted into the first annular groove 302. The first convex ring portion 330 is inserted into the second annular groove 110, and the first stop portion 111 surrounding the second annular groove 110 is simultaneously inserted into the first annular groove 302 between the first convex ring portion 330 and the main ring 310, forming an interlocking waterproof structure. Moisture on the exposed part of the knob 300 enters the second annular groove 110 from the first convex ring portion 330 and is difficult to enter the receiving cavity 301 through the interlocking waterproof structure, thereby further improving the waterproof performance of the display and control device 10 and reducing the possibility of moisture entering the receiving cavity 301 and damaging the encoder 200 and circuit board 400.

[0101] In some embodiments of this application, optionally, such as Figure 1 , Figure 2 , Figure 3 As shown, the display and control device 10 may also include a panel assembly 500. Optionally, the panel assembly 500 may be arranged side by side with the knob 300 on the housing 20; alternatively, the panel assembly 500 may also be disposed within the receiving cavity 301 of the knob 300. In this way, the knob 300 is covered by the outside of the panel assembly 500, the encoder 200, etc., and the knob 300 can integrate decoration and rotation functions, thereby improving the overall appearance of the product.

[0102] The panel assembly 500 may include a display panel 520, which is connected to a circuit board 400. The circuit board 400 receives electrical signals from the encoder 200 and cooperates with the display panel 520 to perform display.

[0103] The display panel 520 can be roughly a lampshade structure with multiple through holes. The circuit board 400 can be equipped with light strips. The light strips on the circuit board 400 cooperate with the through holes on the display panel 520 to display text or patterns that can be observed by the user.

[0104] The display panel 520 can be disposed within the accommodating cavity 301, and the encoder 200 and the display panel 520 can be disposed on opposite sides of the circuit board 400. The display panel 520, the fixing part 220 of the encoder 200, and the circuit board 400 can be kept relatively fixed.

[0105] For example, the display panel 520 is directly fixed to the circuit board 400. For instance, the display panel 520 is directly fixed to the front side of the circuit board 400 by means of adhesive, snap-fit, soldering, etc.

[0106] The display panel 520 is located in the receiving cavity 301 of the knob 300. The display panel 520 and the encoder 200 can share a circuit board 400, which has a high degree of structural integration and saves costs.

[0107] Optionally, in some embodiments, the panel assembly 500 includes a first panel 510, which is disposed at the end of the knob 300 opposite to the mounting body 100, and covers the end of the receiving cavity 301 opposite to the mounting body 100. The first panel 510 covering the receiving cavity 301 can protect the circuit board 400 and encoder 200 inside the receiving cavity 301, and can also improve the aesthetics of the display and control device 10.

[0108] The first panel 510 can be a light-transmitting cover that serves only a protective and decorative purpose, and it can be made of transparent or semi-transparent material. The first panel 510 and the fixing part 220 can remain relatively fixed.

[0109] For example, the first panel 510 can be connected to the fixing part 220 or the mounting body 100 via a connecting component to mount the first panel 510 and keep the first panel 510 and the fixing part 220 relatively fixed.

[0110] For example, such as Figure 3 As shown, both the display panel 520 and the first panel 510 are disposed within the accommodating cavity 301. The first panel 510 is located on the side of the display panel 520 away from the circuit board 400. The first panel 510 is disposed at the end of the knob 300 away from the mounting body 100 and covers the accommodating cavity 301 and other components within the accommodating cavity 301. The first panel 510 can be directly fixed to the display panel 520 by means of adhesive or other methods, so that the first panel 510 and the fixing part 220 remain relatively fixed.

[0111] Optionally, a sensing element can be provided on the circuit board 400. The first panel 510 contacts and is fixedly connected to the display panel 520, and the display panel 520 contacts and is fixedly connected to the circuit board 400. When a user presses the first panel 510, the pressure is transmitted to the sensing element on the circuit board. Alternatively, touching the corresponding sensing area on the first panel 510 causes the sensing element to detect changes in capacitance. Thus, by pressing or touching the corresponding area of ​​the display control panel, basic functions such as switching the operating mode of home appliances and unlocking can be performed. In this type of display control device 10, the first panel 510 only needs to be mechanically connected to the display panel 520 and the circuit board 400. The structure of the first panel 510 is simple and the cost is low.

[0112] During the rotation of the knob 300, the first panel 510 can be set to be fixed. In this way, the first panel 510 does not need to rotate with the knob 300, making the arrangement of the first panel 510 more convenient. It can also reduce the possibility of poor sensory effect of the display and control device 10 caused by the rotation of the first panel 510, and improve the user's ease of observation of the displayed information of the display and control device 10.

[0113] It should be noted that in some other embodiments, the first panel 510 can also be a display and control panel, which is connected to the circuit board 400. The display and control panel can be a touch screen or a panel with operation buttons. The circuit board 400 can receive electrical signals from the display and control panel and display them through the display panel 520. The circuit board 400 can also send electrical signals to the main control component of the home appliance to control the home appliance. By setting the display and control panel, corresponding control commands can be input to the main control component. For example, the display and control panel can be set to allow basic functions such as switching the operating mode and unlocking the home appliance by touching or pressing the display and control panel. The display and control panel can be set in the accommodating cavity 301, and the display and control panel, encoder 200, and display panel 520 can be centrally located. The display and control panel, display panel 520, and encoder 200 share a single circuit board 400, integrating the structure into one unit. This results in a neat and aesthetically pleasing appearance, smaller space occupation, and cost savings. Furthermore, the display control panel, display board 520, and knob 300 can occupy only one position in the housing 20. The housing 20 does not need to be provided with clearance holes for the display control panel (or display board 520) and knob 300 respectively, which improves the processing convenience of the housing 20 and reduces the impact of openings on the internal insulation of the housing 20.

[0114] In some embodiments, optionally, a waterproof annular groove 340 is provided at one end of the knob 300 away from the mounting body 100. The waterproof annular groove 340 is arranged around the circumference of the knob 300. The first panel 510 covers the waterproof annular groove 340. The knob 300 has a first water-blocking part 341, which surrounds the side of the waterproof annular groove 340 facing the receiving cavity 301.

[0115] For example, refer to Figure 2 , Figure 3 , Figures 8 to 10 As shown, an annular flange 320 is provided at the end of the main ring 310 facing away from the mounting body 100. Along the radial direction of the main ring 310, the annular flange 320 protrudes outward relative to the main ring 310 and forms a ring around the circumference of the main ring 310. The end of the annular flange 320 facing the mounting body 100 is connected to the first protruding ring portion 330. A waterproof ring groove 340 is provided at the end of the annular flange 320 facing away from the mounting body 100. The end face of the annular flange 320 facing away from the mounting body 100 can be partially recessed to form the waterproof ring groove 340, or the outer circumferential surface of the main ring 310 and the annular flange 320 can cooperate to form the waterproof ring groove 340. The portion located between the waterproof ring groove 340 and the receiving cavity 301 constitutes the first water-blocking portion 341. The annular flange 320 and the main ring 310 can be configured as an integral structure, and the first protruding ring portion 330 and the annular flange 320 can be configured as an integral structure.

[0116] By setting the waterproof annular groove 340, the possibility of external moisture entering the accommodating cavity 301 can be reduced, thus improving the waterproof performance of the display and control device 10. Specifically, external moisture enters the waterproof annular groove 340 first after entering through the gap between the first panel 510 and the knob 300. The moisture is stopped by the first water-blocking part 341 surrounding the waterproof annular groove 340 and can flow out after gathering along the circumference of the first water-blocking part 341. This reduces the possibility of moisture entering the accommodating cavity 301 through the gap between the first panel 510 and the knob 300, and reduces the damage of moisture to components such as the circuit board 400, encoder 200, and display panel 520 inside the accommodating cavity 301.

[0117] Optionally, the knob 300 further includes a second water-blocking portion 342 and a second connecting portion 343, with the first water-blocking portion 341, the second water-blocking portion 342, and the second connecting portion 343 forming a waterproof annular groove 340. The second water-blocking portion 342 is disposed opposite to the first water-blocking portion 341, and the second water-blocking portion 342 is located on the side of the first water-blocking portion 341 away from the receiving cavity 301. The second connecting portion 343 connects the second water-blocking portion 342 and the first water-blocking portion 341. The second water-blocking portion 342 protrudes in the direction away from the second connecting portion 343 compared to the first water-blocking portion 341. The first panel 510 is located on the side of the second water-blocking portion 342 facing the receiving cavity 301.

[0118] The first water-blocking part 341, the second water-blocking part 342, and the second connecting part 343 are all formed by the walls of the waterproof annular groove 340. The waterproof annular groove 340 can be a groove with a U-shaped cross-section.

[0119] The first panel 510 is located on the inner circumferential surface of the second water-blocking part 342. The edge of the first panel 510 is surrounded by the second water-blocking part 342, which can protect the first panel 510. The display and control device 10 has a good structural aesthetics and overall integrity.

[0120] Optionally, in some embodiments, the knob 300 is configured to be rotatable around the panel assembly 500, that is, the panel assembly 500 (first panel 510) and the mounting body 100 remain relatively fixed, and when the knob 300 rotates, the panel assembly 500, the circuit board 400, the fixing part 220 of the encoder 200 and the mounting body 100 remain fixed.

[0121] For example, along the axial direction of the knob 300, the encoder 200 and the panel assembly 500 are respectively disposed on both sides of the circuit board 400. The panel assembly 500 is connected to and relatively fixed to the circuit board 400. The panel assembly 500 and the knob 300 can be clearance-fitted so that the knob 300 is configured to be able to rotate around the panel assembly 500.

[0122] The end of the first water-blocking part 341 and the inner circumferential surface of the second water-blocking part 342 can be fitted with the first panel 510 with a clearance to improve the smoothness of the rotation of the knob 300. At the same time, the smaller the clearance, the better. Specifically, it can be set to less than 0.5 mm, for example, 0.2 mm to 0.3 mm, to reduce the possibility of water vapor entering the receiving cavity 301 of the knob 300.

[0123] Optionally, such as Figure 8 , Figure 10 As shown, a reinforcing support 344 can also be provided within the waterproof annular groove 340. The reinforcing support 344 can support and restrict the first panel 510, reducing the possibility of the first panel 510 deforming or denting and entering the waterproof annular groove 340, thus improving the structural stability of the first panel 510. In the configuration where the knob 300 is rotatable around the panel assembly 500, under normal conditions, the first panel 510 and the reinforcing support 344 are in a clearance fit. If the first panel 510 shakes or deforms, the reinforcing support 344 can provide auxiliary support, improving the smoothness of the knob 300's rotation.

[0124] Multiple reinforcing support portions 344 can be provided, and the multiple reinforcing support portions 344 can be arranged circumferentially at intervals in the waterproof annular groove 340. For example, the multiple reinforcing support portions 344 can be arranged at equal intervals.

[0125] A connecting gap can be provided between each reinforcing support 344 and the wall of the waterproof ring groove 340. The connecting gap 345 can connect the two sides of the reinforcing support 344, so that the waterproof ring groove 340 is connected in all directions along its circumference, so that the water vapor entering the waterproof ring groove 340 can flow away along the waterproof ring groove 340, thereby improving the waterproof effect.

[0126] For example, the reinforcing support 344 can be connected to the first water-blocking part 341 and a communication gap 345 is formed between it and the second water-blocking part 342.

[0127] For example, the reinforcing support 344 may also be connected to the second water-blocking part 342, and a communication gap 345 is formed between the support and the second water-blocking part 342.

[0128] For example, the reinforcing support 344 may also be connected to the second connecting part 343, and a communication gap 345 may be formed between it and the first water-blocking part 341 and the second water-blocking part 342 respectively.

[0129] Optionally, the knob 300 and the rotating part 210 can be engaged by a snap-fit ​​component (for ease of description, this snap-fit ​​component is defined as the first snap-fit ​​component 211). The knob 300 is directly connected to the encoder 200 through the first snap-fit ​​component 211, which ensures the overall appearance of the display and control device 10 while allowing control information to be input to the main control component through the knob 300.

[0130] During the rotation of the knob 300, the first panel 510 can be fixed. Since the first panel 510 does not rotate with the knob 300, the seal between the first panel 510 and the knob 300 is crucial. In this embodiment, the waterproof annular groove 340 of the first panel 510 and the knob 300 provides a good waterproof effect. Compared with sealing structures such as sealing rings, the waterproof structure between the first panel 510 and the knob 300 in this embodiment can reduce the frictional resistance of the knob 300 relative to the first panel 510 during rotation, improve the smoothness of the knob 300's rotation, and enhance the user experience.

[0131] Alternatively, in some embodiments, such as Figure 3 , Figures 8 to 10 As shown, the main body ring 310 has an annular portion 311 at one end facing the mounting body 100. Along the radial direction of the main body ring 310, the annular portion 311 is located inside the main body ring 310. The annular portion 311 is arranged around the outer side of the rotating portion 210 and is connected to the rotating portion 210. The rotating portion 210 is sleeved on the outer periphery of the fixed portion 220 and rotates with the fixed portion 220.

[0132] For example, such as Figure 3 and Figure 9As shown, the annular portion 311 includes a first annular portion 3111 and a second annular portion 3112. The second annular portion 3112 is connected between the main body ring 310 and the first annular portion 3111. The first annular portion 3111 protrudes relative to the second annular portion 3112 in a direction away from the panel assembly 500. The first annular portion 3111 and the rotating portion 210 are engaged by the first engaging member 211.

[0133] The first ring portion 3111 and the second ring portion 3112 can be an integral structure, and the annular portion 311 and the main ring 310 can be an integral structure. By setting the annular portion 311, it is convenient to connect the knob 300 and the rotating portion 210 of the encoder 200. The rotating portion 210 is sleeved on the outside of the fixed portion 220. The rotating portion 210 can avoid the setting space of the fixed portion 220, so that the fixed member 600 can be at least partially built into the receiving cavity 301 inside the knob 300. While ensuring the integrity and aesthetics of the overall appearance of the knob 300, it improves the compactness of the component arrangement and the space utilization rate.

[0134] The first snap-fit ​​component 211 can keep the annular portion 311 of the knob 300 and the rotating portion 210 of the encoder 200 relatively fixed at least in the circumferential direction, so as to drive the rotating portion 210 to rotate synchronously by acting on the knob 300.

[0135] Optionally, in some implementations, the first engaging component 211 may include a first latch 212 and a first slot 312. The annular portion 311 is provided with one of the first latch 212 and the first slot 312, and the rotating portion 210 of the encoder 200 is provided with the other of the first latch 212 and the first slot 312. The first latch 212 and the first slot 312 engage in a latching action. Multiple first slots 312 and first latches 212 may be provided in a one-to-one correspondence.

[0136] For example, such as Figure 2 , Figures 6 to 8 , Figure 10 As shown, the inner circumferential surface of the annular portion 311 is provided with three first slots 312 at equal intervals along the circumferential direction, and the outer circumferential surface of the rotating portion 210 of the encoder 200 is provided with three first buckles 212 at equal intervals along the circumferential direction. Each first buckle 212 is engaged and fixed with each first slot 312 in a one-to-one correspondence.

[0137] Optionally, in some embodiments, the knob 300 further has a second protruding ring portion 350, which surrounds the outer periphery of the first protruding ring portion 330. For example, as... Figure 3 , Figures 8 to 10 , Figure 16 and Figure 17As shown, along the radial direction of the main body ring 310, the outer peripheral side of the main body ring 310 has an annular flange 320 that protrudes toward the mounting body 100 to form a second convex ring portion 350.

[0138] The second convex ring portion 350 is configured to have a clearance fit with the surface of the mounting body 100. Specifically, the second convex ring portion 350 can be located on the outer wall surface of the first wall 21 and has a clearance fit with the outer wall surface of the first wall 21. This clearance fit between the second convex ring portion 350 and the first wall 21 improves the smoothness of rotation of the knob 300. The clearance should be as small as possible, specifically less than 1 mm. The second convex ring portion 350 is located outside the first convex ring portion 330, which can protect the first convex ring portion 330 and reduce the possibility of dust or other contaminants entering the gap between the first convex ring portion 330 and the second annular groove 110, thus improving the reliability of the display and control device 10.

[0139] Optionally, in some embodiments, the display and control device 10 further includes a fixing member 600, and the fixing part 220 is connected to the mounting body 100 through the fixing member 600.

[0140] The fastener 600 and the mounting body 100 can be detachably connected or non-detachably connected, and the fastener 600 and the fixing part 220 can be detachably connected or non-detachably connected.

[0141] In some embodiments, the fastener 600 may optionally include a base portion 610 and an assembly portion 620 connected to the base portion 610. The base portion 610 is fixedly connected to the mounting body 100, and the assembly portion 620 is located on the side of the base portion 610 away from the mounting body 100 and is connected to the fastener 220.

[0142] The fastener 600 is configured to include a base portion 610 and an assembly portion 620, which improves the ease of assembly between the fastener 220 of the encoder 200 and the mounting body 100.

[0143] The base portion 610 and the mounting body 100 can be connected by means of adhesive, snap-fit, bolts, etc. For example, the mounting body 100 and the base portion 610 can be snapped together and fixed by a third snap-fit ​​component 120, which may include a third buckle 121.

[0144] The assembly part 620 and the base part 610 can be configured as an integral structure. For example, the fastener 600 can be an integrally molded structure such as injection molding, and both the assembly part 620 and the base part 610 can be plastic parts. The assembly part 620 and the fastener 220 can be connected by means of adhesive, snap-fit, bolts, etc.

[0145] Optionally, the assembly part 620 and the fixing part 220 are configured to be snap-fitted together.

[0146] The assembly portion 620 of the fixing member 600 and the fixing portion 220 of the encoder 200 can be engaged by the second engaging member 621. The second engaging member 621 can at least keep the assembly portion 620 of the fixing member 600 and the fixing portion 220 of the encoder 200 relatively fixed in the circumferential direction, so that when the knob 300 drives the rotating portion 210 to rotate, the fixing portion 220 of the encoder 200 can remain stationary.

[0147] For example, the second snap-fit ​​component 621 may include a second snap-fit ​​622 and a second slot 221. One of the assembly part 620 and the fixing part 220 is provided with the second snap-fit ​​622, and the other of the assembly part 620 and the fixing part 220 is provided with the second slot 221. The second snap-fit ​​622 and the second slot 221 engage with each other. Multiple second snap-fits 622 and multiple second slots 221 may be provided in a one-to-one correspondence, and the multiple second snap-fits 622 and multiple second slots 221 may be spaced apart along the circumference of the knob component 300.

[0148] Optionally, the second snap-fit ​​component 621 can also keep the assembly portion 620 of the fixing member 600 and the fixing portion 220 of the encoder 200 relatively fixed in the axial direction. That is, the second snap-fit ​​component 621 can fix the encoder 200 and the fixing member 600 in the axial direction to improve the assembly reliability of the display and control device. For example, the second slot 221 has an abutting surface facing away from the fixing member 600, and the second buckle 622 abuts against the abutting surface 2211. Under the pressing action of the second buckle 622 and the abutting surface 2211, the movement of the knob 300 in the axial direction away from the fixing member 600 can be restricted.

[0149] Optionally, such as Figure 3 and Figure 11 As shown, a limiting ring 640 may be provided on the side of the seat portion 610 facing the assembly portion 620. The limiting ring 640 is arranged around the assembly portion 620 and spaced apart from the assembly portion 620. The first ring portion 3111 of the knob 300 and the rotating portion 210 of the encoder 200 may be arranged between the limiting ring 640 and the assembly portion 620. The limiting ring 640 and the assembly portion 620 can limit the knob 300 and the rotating portion 210 in the radial direction, making the knob 300 and the rotating portion 210 less prone to shaking in the radial direction and improving the rotational stability of the knob 300.

[0150] It should be noted that the fixing part 220 may also have a portion disposed between the limiting ring 640 and the assembly part 620. That is, the first ring part 3111 of the knob 300, the rotating part 210 of the encoder 200, and the fixing part 220 may be disposed simultaneously between the limiting ring 640 and the assembly part 620.

[0151] Optionally, in some implementations, a third latch 121 is provided on the mounting body 100, and the third latch 121 abuts against the side of the base portion 610 facing the assembly portion 620, so as to fix the base portion 610 to the mounting body 100. Multiple third latches 121 can be provided, and the multiple third latches 121 are arranged at intervals along the circumference of the base portion 610.

[0152] Optionally, in some implementations, a first positioning component 130 may be provided between the mounting body 100 and the base portion 610. The first positioning component 130 serves as a guide during the installation of the fastener 600 and is used to position the fastener 600. The first positioning component 130 may include a positioning pin 131 and a positioning hole 611. One of the mounting body 100 and the base portion 610 is provided with the positioning pin 131, and the other of the mounting body 100 and the base portion 610 is provided with the positioning hole 611. The positioning pin 131 cooperates with the positioning hole 611 to position the fastener 600. Multiple positioning pins 131 and positioning holes 611 may be provided in a one-to-one correspondence. The arrangement of the multiple positioning pins 131 can be asymmetrical. In this way, the cooperation of multiple positioning pins 131 and multiple positioning holes 611 can prevent the fastener 600 from being mistakenly attached, reducing the possibility of assembly errors.

[0153] Exemplarily, in one specific embodiment, such as Figure 2 , Figure 3 , Figure 4 , Figure 11As shown, the mounting body 100 is integrally provided with three positioning pins 131 and three third buckles 121. The fastener 600 includes an integrally structured base part 610 and assembly part 620. One side of the base part 610 abuts against the mounting body 100, and the other side of the base part 610 is provided with the assembly part 620. The base part 610 is roughly in the shape of an annular plate, and the base part 610 is provided with three positioning holes 611 and three connecting holes 612. Along the circumference of the base portion 610, three positioning pins 131 are arranged at intervals, and three third latches 121 are arranged at intervals, with the positioning pins 131 and third latches 121 staggered. A positioning pin 131 is provided between two adjacent third latches 121, and a third latch 121 is provided between two adjacent positioning pins 131. The positioning pins 131 correspond one-to-one with the positioning holes 611 and are inserted into each other. The three third latches 121 pass through the three connecting holes 612 one-to-one and abut against the side of the base portion 610 facing the assembly portion 620, so that the base portion 610 is snapped and fixed to the mounting body 100. Among them, the base portion 610 may be provided with a first reinforcing part 614 around the connecting hole 612, and the third latches 121 abut against the first reinforcing part 614; the base portion 610 may be provided with a second reinforcing part 615 around the connecting hole 612. The positioning hole 611 is provided with a second buckle 622 on the assembly part 620. The rotating part 210 of the encoder 200 is coaxially arranged with the fixed part 220, and the rotating part 210 is sleeved on the outer periphery of the fixed part 220. The center of the fixed part 220 is provided with a first through hole 230. The inner periphery of the end of the fixed part 220 away from the base part 610 is provided with a second slot 221. The assembly part 620 passes through the first through hole 230, and the second buckle 622 abuts against the second slot 221 so that the encoder 200 is installed on the fixing member 600.

[0154] Alternatively, in some embodiments, such as Figure 3 , Figure 4 , Figure 11 As shown, the base part 610 and the assembly part 620 are provided with a first wiring hole 630 that is interconnected with each other, and the mounting body 100 is provided with a second wiring hole 106. The first wiring hole 630 and the second wiring hole 106 are connected, and the wire harness connected to the circuit board 400 passes through the first wiring hole 630 and the second wiring hole 106.

[0155] Optionally, in some embodiments, the mounting body 100 includes a mounting plate 101 and a receiving portion 102 connected to each other. The mounting plate 101 is provided with a through hole. The receiving portion 102 is installed on one side of the mounting plate 101 and surrounds the through hole. The receiving portion 102 and the through hole together form a mounting groove 103. A second annular groove 110 is provided on the mounting plate 101 and surrounds the mounting groove 103. A fixing member 600 is provided in the mounting groove 103. One end of the main ring 310 is inserted into the mounting groove 103.

[0156] The mounting plate 101 is used to connect with the housing 20. Optionally, the mounting body 100 can be an embedded part of the housing 20, and the mounting plate 101 can be built into the inner side of the outer shell 22 of the housing 20. The side of the mounting plate 101 facing away from the receiving part 102 is used to fix it to the inner wall surface 23 of the outer shell 22 of the housing 20. For example, the mounting plate 101 can be pasted to the inner wall surface 23 of the outer shell 22 with double-sided tape or glue, so that the mounting body 100 is embedded in the wall of the housing 20.

[0157] The mounting plate 101 and the receiving part 102 can be integrally formed. The receiving part 102 protrudes from the mounting plate 101. The receiving part 102 is hollow inside and has an opening. The opening of the receiving part 102 is aligned with and connected to the through hole of the mounting plate 101 to form a mounting groove 103.

[0158] Both the first wiring hole 630 and the second wiring hole 106 are connected to the mounting groove 103. For example, the first wiring hole 630 and the mounting groove 103 can be coaxially arranged, and the second wiring hole 106 can be provided on the side of the receiving portion 102.

[0159] Optionally, the mounting plate 101 may also be provided with a wiring section 105, which is located on the same side of the mounting plate 101 as the receiving section 102. The wiring section 105 is connected to the receiving section 102, and the wiring section 105 is hollow inside to form a second wiring hole 106.

[0160] It should be noted that after the fixed part 220 and the rotating part 210 are assembled as a whole, they can be engaged in the upper limit of the axial direction. That is to say, after the encoder 200 is assembled, it is a whole component, and the fixed part 220 and the rotating part 210 only retain the degree of freedom of relative rotation. At the same time, through the limiting engagement of the fixed part 220 and the rotating part 210 of the encoder 200, since the rotating part 210 is fixedly connected to the knob 300, the knob 300 can be fixed in the upper limit of the axial direction. Optionally, the axial limiting of the fixing part 220 and the rotating part 210 can also be achieved by mutual limiting after the various components are assembled. For example, the first panel 510, the display panel 520, the circuit board 400, and the fixing part 220 are fixedly connected in sequence. The fixing part 220 is fixedly connected to the mounting body 100 through the fixing member 600. The first panel 510 and the waterproof ring groove 340 (specifically the annular flange 320) of the knob 300 are axially limited. The fixing part 220, the rotating part 210, and the annular part 311 of the encoder 200 are axially limited with the base part 610, so that each component is limited in the axial direction and the display and control device 10 is formed as a whole.

[0161] like Figures 12 to 18As shown in some embodiments of this application, a freezer is also provided, including a freezer body and a display and control device 10 proposed in this application or any embodiment of this application.

[0162] The freezer body has a cabinet 20, and the cabinet 20 has a first wall 21; the display and control device 10 is mounted on the first wall 21 via a mounting body 100. The knob 300 of the display and control device 10 is at least partially exposed on the outside of the first wall 21 to facilitate turning the knob 300.

[0163] The freezer body includes a main control component, and the wiring harness of the display and control device 10 passes through the wiring section 105 and connects to the main control component of the main appliance body. The display and control device 10 can display the control information of the main control component and input control information to the main control component to control the operation of the freezer.

[0164] The enclosure 20 may include a top wall, a bottom wall, and a side wall connecting the top wall and the bottom wall. The first wall 21 may be any side wall of the enclosure 20, and the axis of the knob is perpendicular to the first wall 21. The display and control device 10 is disposed on the first wall 21 (i.e., the side wall of the enclosure 20). The second annular groove 110 and the waterproof annular groove 340 are arranged around the horizontal axis in a generally circular manner. Both the second annular groove 110 and the waterproof annular groove 340 extend in a generally vertical plane. The water vapor accumulated in the second annular groove 110 and the waterproof annular groove 340 can flow to the bottom under the action of gravity along the groove walls surrounding their respective annular grooves, and then flow away.

[0165] Optionally, the first wall 21 includes a housing 22, on which a mounting hole 25 is provided. The mounting body 100 is mounted on the inner wall surface 23 of the housing 22, and the knob 300 passes through the mounting hole 25, and the knob 300 at least partially protrudes from the outer wall surface of the housing 22.

[0166] The first wall 21 may only have the outer shell 22, or other functional layers may be added inside the outer shell 22.

[0167] Optionally, in some implementations, the first wall 21 further includes an insulation layer 26, which is located inside the outer shell 22 and covers the mounting body 100.

[0168] During the assembly process, the display and control device 10 can be assembled to the outer shell 22 first, and then the insulation layer 26 can be assembled to the outer shell 22 with the display and control device 10. The insulation layer 26 can be a foam material.

[0169] Optionally, a second positioning component 140 is provided between the mounting body 100 and the first wall 21. The second positioning component 140 is used to position the mounting body 100 at its mounting position and in its mounting direction.

[0170] For example, the second positioning component 140 may include a positioning protrusion 24 and a positioning groove 141. One of the positioning protrusion 24 and the positioning groove 141 is disposed on the mounting body 100, and the other of the positioning protrusion 24 and the positioning groove 141 is disposed on the housing 22. Multiple positioning protrusions 24 and positioning grooves 141 may be configured in a one-to-one correspondence. The multiple positioning protrusions 24 may be configured with different structures to position the mounting body 100 in its mounting position while also providing a foolproof function, reducing the possibility of incorrect installation of the display and control device 10. The opening of the positioning groove 141 faces the housing 22, the back of the positioning groove 141 protrudes relative to the mounting plate 101, and the positioning protrusion 24 protrudes relative to the inner wall surface 23 of the housing 22. During the assembly of the display and control device 10 into the housing 20, the mounting body 100 can be pre-embedded into the housing 22. During the pre-embedding of the mounting body 100 into the housing 22, the positioning groove 141 and the positioning protrusion cooperate for positioning. After the mounting body 100 is installed, the fastener 600, encoder 200, circuit board 400 and panel assembly 500 are then assembled into the mounting body 100.

[0171] like Figure 4 , Figure 5 , Figure 18 As shown, in one embodiment, the outer shell 22 is provided with two positioning protrusions 24, which are spaced apart; the accommodating part 102 is provided with two positioning grooves 141 at intervals along its circumferential edge, and the two positioning grooves 141 have different extension lengths along the circumferential direction of the accommodating part 102. The two positioning grooves 141 are respectively adapted to the two positioning protrusions 24 to position the installation position of the mounting body 100.

[0172] The second positioning component 140 can ensure that the angle of the assembled mounting body 100 meets the preset requirements, reducing the possibility of misalignment of the mounting body 100.

[0173] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display and control device, characterized in that, include: The knob has an internal cavity and a first mating part that surrounds the cavity. The mounting body has a second mating part, which is rotatably engaged with the first mating part, and a water-blocking structure is provided between the second mating part and the first mating part; An encoder is disposed within the accommodating cavity. The encoder includes a rotating part and a fixed part. The fixed part is fixedly connected to the mounting body. The rotating part is rotatably engaged with the fixed part. The knob is fixedly connected to the rotating part. The circuit board is disposed in the accommodating cavity, fixedly disposed relative to the fixing part, and electrically connected to the encoder.

2. The display and control device according to claim 1, characterized in that, The knob includes a main ring that surrounds and forms the receiving cavity. The main ring is connected to the rotating part. The first mating part is disposed on the outer periphery of the main ring. The second mating part includes a first stop part that surrounds the outer side of the main ring and forms the water-blocking structure.

3. The display and control device according to claim 2, characterized in that, The first mating part includes a first annular groove, and the first stop part is at least partially inserted into the first annular groove.

4. The display and control device according to claim 3, characterized in that, The second mating part further includes a second annular groove, and the first stop part is at least partially surrounded on one side of the second annular groove. The first mating part includes a first convex ring part, which is surrounded on the side of the first annular groove away from the main ring and is inserted into the second annular groove.

5. The display and control device according to claim 1, characterized in that, The display and control device further includes a panel assembly, which includes a first panel along the axial direction of the knob. The first panel is disposed at one end of the knob away from the mounting body and covers the receiving cavity.

6. The display and control device according to claim 5, characterized in that, The knob component has a waterproof annular groove at one end away from the mounting body. The waterproof annular groove is arranged around the circumference of the knob component. The first panel covers the waterproof annular groove. The knob component has a first water-blocking part, which surrounds the waterproof annular groove on the side facing the receiving cavity.

7. The display and control device according to claim 6, characterized in that, The knob further includes a second water-blocking part and a second connecting part. The first water-blocking part, the second water-blocking part, and the second connecting part form the waterproof annular groove. The second water-blocking part is disposed opposite to the first water-blocking part, and the second water-blocking part is located on the side of the first water-blocking part away from the receiving cavity. The second connecting part is connected between the second water-blocking part and the first water-blocking part. The second water-blocking part protrudes in a direction away from the second connecting part relative to the first water-blocking part. The first panel is located on the side of the second water-blocking part facing the receiving cavity.

8. The display and control device according to claim 7, characterized in that, Multiple reinforcing support parts are provided at intervals along the circumference of the waterproof annular groove, and a communicating gap is provided between the reinforcing support parts and the first water-blocking part and / or between the reinforcing support parts and the second water-blocking part.

9. The display and control device according to claim 6, characterized in that, The knob includes a main body ring that surrounds the receiving cavity. The main body ring is connected to the rotating part. An annular flange is provided at the end of the main body ring away from the mounting body. Along the radial direction of the main body ring, the annular flange protrudes outward relative to the main body ring and is arranged in a circle along the circumference of the main body ring. Along the axial direction of the main body ring, a waterproof ring groove is provided at the end of the annular flange away from the mounting body.

10. The display and control device according to claim 5, characterized in that, Along the axial direction of the knob, the encoder and the panel assembly are respectively disposed on both sides of the circuit board. The panel assembly is connected to the circuit board and fixed relative to it. The panel assembly and the knob are clearance-fitted. The knob is configured to be able to rotate around the panel assembly.

11. The display and control device according to claim 10, characterized in that, The panel assembly further includes a display panel, which is fixedly connected to the circuit board, and the first panel is connected to the side of the display panel opposite to the circuit board.

12. The display and control device according to claim 1, characterized in that, The knob includes a main body ring, with an annular portion at one end of the main body ring facing the mounting body. The annular portion is located inside the main body ring along its radial direction. The main body ring and the annular portion enclose the receiving cavity. The annular portion is arranged around the outside of the rotating part and is connected to the rotating part.

13. The display and control device according to claim 12, characterized in that, The annular portion and the rotating portion are engaged by a first engaging component.

14. The display and control device according to any one of claims 1-13, characterized in that, The display and control device further includes a fixing component, which is connected to the mounting body via the fixing component. The fixing component includes a base portion and an assembly portion connected to the base portion. The base portion is fixedly connected to the mounting body, and the assembly portion is located on the side of the base portion away from the mounting body and is connected to the fixing component.

15. The display and control device according to claim 14, characterized in that, The rotating part is disposed on the outer periphery of the assembly part, and a limiting ring is provided on the seat part. The rotating part is located between the limiting ring and the assembly part.

16. The display and control device according to claim 14, characterized in that, The base portion is snapped into the mounting body; And / or, a first positioning component is provided between the mounting body and the base portion, the first positioning component being used to guide the base portion and position the mounting position of the base portion; And / or, the assembly part is engaged with the fixing part.

17. The display and control device according to claim 16, characterized in that, The base and the assembly are provided with a first wiring hole that is interconnected with each other, and the mounting body is provided with a second wiring hole. The first wiring hole and the second wiring hole are connected, and the wire harness connected to the circuit board passes through the first wiring hole and the second wiring hole.

18. The display and control device according to any one of claims 1-13, characterized in that, The mounting body is provided with a mounting groove, and one end of the knob is inserted into the mounting groove.

19. The display and control device according to claim 18, characterized in that, The mounting body includes a mounting plate and a receiving part. The mounting plate is provided with a through hole. One side of the mounting plate is used to connect to the cabinet of the household appliance. The receiving part is connected to the other side of the mounting plate and surrounds the through hole, and cooperates with the through hole to form the mounting groove.

20. A freezer, characterized in that, include: The freezer body has a cabinet, and the cabinet has a first wall; The display and control device according to any one of claims 1-19, wherein the display and control device is connected to the first wall via the mounting body.

21. The freezer according to claim 20, characterized in that, The first wall includes an outer shell with a mounting hole. The mounting body is mounted on the inner wall of the outer shell, and the knob passes through the mounting hole, with at least a portion of the knob protruding from the outer wall of the outer shell.

22. The freezer according to claim 21, characterized in that, The first wall also includes an insulation layer, which is located inside the outer shell and covers the mounting body.

23. The freezer according to claim 20, characterized in that, A second positioning component is also provided between the mounting body and the first wall. The second positioning component is used to position the mounting body at the mounting location and in the mounting direction.

Images