A key device for a domestic appliance and a domestic appliance
By designing protrusions in the button devices of household appliances to form a flow guide path, the problems of high friction and high cost caused by the sealing ring structure are solved, achieving good sealing effect and safety, and simplifying the assembly process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BSH ELECTRICAL APPLIANCES (JIANGSU) CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-06-19
AI Technical Summary
In existing household appliance button devices, the sealing ring structure has high friction, which affects the pressing effect, is costly, and has poor reliability, especially when it ages.
The design incorporates protruding parts for both the pressing and receiving components, creating a flow path to prevent water from entering the appliance. This eliminates the need for an additional sealing ring. The protrusions partially overlap in the thickness direction and are staggered in the extended plane. Combined with elastic elements and a limiting structure, this ensures a good sealing effect.
It achieves improved sealing and safety, reduced manufacturing costs, simplified assembly, and enhanced user experience without affecting the pressing process.
Smart Images
Figure CN224384144U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of household appliances, and in particular to a button device for household appliances. This application also relates to a corresponding household appliance. Background Technology
[0002] Household appliances typically include push-button mechanisms to allow users to input commands or switch functions. To achieve the desired button travel, the push-button mechanism incorporates gaps and elastic structures. Furthermore, to prevent water from flowing into the appliance through these gaps, an additional sealing ring is also included. However, significant friction can exist between the sealing ring and the button, hindering the pressing process and negatively impacting the pressing effect, especially as the sealing ring material ages. Moreover, the sealing ring structure is costly to manufacture and has relatively poor reliability. Utility Model Content
[0003] Therefore, one object of the embodiments of this application is to provide an improved button device for household appliances, which can be cost-effectively manufactured and assembled, and ensures a good sealing effect without affecting the pressing process. Another object of the embodiments of this application is to provide a corresponding household appliance.
[0004] According to a first aspect of this application, a button device for household appliances is provided, wherein the button device comprises at least:
[0005] - A receiving element having a first opening on its front side and a second opening on its rear side opposite to the front side along the thickness direction, and a receiving cavity is arranged between the front side and the rear side.
[0006] - A pressing element having a pressing cover that can be embedded in the first opening and a pressing rod extending from the pressing cover toward the rear side; and
[0007] - An elastic element, which is disposed in the receiving cavity between the pressing cover of the pressing member and the rear side of the receiving member.
[0008] The pressing member has a first protrusion extending from the pressing cover toward the rear side, and the receiving member has a second protrusion extending from the rear side toward the front side. In the thickness direction, the first protrusion and the second protrusion partially overlap each other, and in the extension plane perpendicular to the thickness direction, the second protrusion is arranged closer to the second opening than the first protrusion.
[0009] Compared to existing technologies, in the button device for household appliances according to this application, the pressing member has a first protrusion extending from the pressing cover toward the rear side, and the receiving member has a second protrusion extending from the rear side toward the front side. By partially overlapping the first and second protrusions in the thickness direction and arranging them staggered in the extending plane, a flow path is formed through the first and second protrusions. Water flowing in from the gap between the receiving member and the pressing member flows along the flow path, thereby reliably preventing water from flowing into the interior of the household appliance without the need for an additional sealing ring. This ensures a good sealing effect without affecting the pressing process of the button device, thereby improving safety and user experience.
[0010] According to an exemplary embodiment of this application, the first protrusion and the second protrusion are annularly constructed; and / or, the first protrusion is disposed at the circumferential edge of the press cover; and / or, the first protrusion and the second protrusion abut against each other in their overlapping portions. This guides the flow of water entering from the circumferential edge of the press cover and minimizes the possibility of water reaching the second opening on the rear side of the receiver and flowing into the interior of the household appliance through that second opening.
[0011] According to an exemplary embodiment of this application, the receiving member forms a groove through an outer side wall and a second protrusion, and the first protrusion is inserted into the groove, wherein a first guide ramp is provided on the outer side wall and / or the first protrusion to guide the first protrusion into the groove. This simplifies the assembly process of the pressing member and the receiving member.
[0012] According to an exemplary embodiment of this application, the pressing member has a third protrusion extending from the pressing cover toward the rear side. In the thickness direction, the third protrusion and the second protrusion partially overlap each other, and in the extending plane, the third protrusion is arranged closer to the second opening than the second protrusion. The second and third protrusions form an additional flow path to further prevent water from flowing into the appliance and optimize the sealing effect.
[0013] According to an exemplary embodiment of this application, the receiver has a fourth protrusion extending from the rear side toward the front side, the fourth protrusion being arranged adjacent to the second opening in a manner surrounding the second opening. The fourth protrusion further prevents water from flowing into the appliance through the second opening.
[0014] According to an exemplary embodiment of this application, the pressing member has a fifth protrusion extending from the pressing cover toward the rear side, the fifth protrusion and the fourth protrusion together forming a limiting structure for the pressing rod, wherein, in the released state, the distance between the fifth protrusion and the fourth protrusion is the stroke length of the pressing rod. A desired pressing distance can be set by the cooperation of the fourth and fifth protrusions.
[0015] According to an exemplary embodiment of this application, the elastic element is constructed as a compression spring, which is arranged around the fourth protrusion and the fifth protrusion, wherein a second guide ramp is provided on the fourth protrusion to guide the arrangement of the elastic element around the fourth protrusion; and / or, water reservoirs are provided in the fourth protrusion and the fifth protrusion. This simplifies the assembly process of the elastic element with the receiving element and the pressing element.
[0016] According to an exemplary embodiment of this application, a water guide groove is provided on the side of the second protrusion facing the first protrusion; and / or, a dehumidifying material is arranged in the receiving cavity. This further optimizes the sealing effect of the button device.
[0017] According to an exemplary embodiment of this application, the button device includes a trigger device arranged aligned with the press lever, wherein during pressing, the distance between the trigger device and the press lever along the thickness direction decreases. In this case, the user inputs a command through the change in distance between the press lever and the trigger device when pressing the button device.
[0018] According to an exemplary embodiment of this application, the triggering device is configured as a micro switch. During pressing, the pressing member is pressed until the end of the pressing rod abuts against the micro switch; and / or, in the released state of the button device, the end face of the pressing rod facing the triggering device is flush with or protrudes from the rear side toward the triggering device. This enables command input with high sensitivity and high reliability.
[0019] According to an exemplary embodiment of this application, the second opening and the pressing rod are centrally arranged in the button device in a manner aligned with each other; and / or, the button device is constructed symmetrically about a central plane; and / or, in the released state of the button device, the upper surface of the pressing cover and the front side of the receiving member are flush. This achieves simple and cost-effective manufacturing of the button device and improves its appearance.
[0020] According to an exemplary embodiment of this application, the receiving member has at least one hook, and the pressing member has a groove for the hook, the length of the groove along the thickness direction being greater than or equal to the stroke length of the pressing rod, wherein, in the released state of the button device, the hook stops at the lower edge of the groove. This effectively prevents the pressing member from unintentionally detaching from the receiving member.
[0021] According to an exemplary embodiment of this application, the receiving member is an integral injection-molded part; or, the receiving member has a front plate and a rear plate with separate constructions, the front plate and the rear plate being form-fitted to each other.
[0022] According to a second aspect of this application, a household appliance is provided, wherein the household appliance includes a button device according to the invention and a control unit operatively connected to the button device.
[0023] According to an exemplary embodiment of this application, the household appliance is a refrigerator; and / or, the button device is arranged such that the thickness direction of the button device is perpendicular to the direction of gravity. Attached Figure Description
[0024] The principles, features, and advantages of this application will be better understood below with reference to the accompanying drawings. The drawings include:
[0025] Figure 1 A front view of a household appliance according to an exemplary embodiment of this application is shown;
[0026] Figure 2 A partial view of a household appliance according to an exemplary embodiment of this application is shown;
[0027] Figure 3 A front view of a button device of a household appliance according to an exemplary embodiment of this application is shown;
[0028] Figure 4a and Figure 4b A cross-sectional view and an exploded view along section line AA of a key device according to an exemplary embodiment of this application are shown respectively;
[0029] Figure 5a and Figure 5b A cross-sectional view and an exploded view along section line BB of a button device according to another exemplary embodiment of this application are shown respectively.
[0030] Reference numerals: Household appliance 1000; Button device 100; Control unit 200; Receiver 10; Front side 11; Rear side 12; First opening 13; Second opening 14; Receiver cavity 15; Outer wall 16; Groove 17; Water guide channel 18; Hook 19; Pressing element 20; Pressing cover 21; Pressing rod 22; Slot 23; Elastic element 30; Triggering device 40; First guide slope 51; Second guide slope 52; Water storage tank 53; Front plate 61; Rear plate 62; First protrusion 1; Second protrusion 2; Third protrusion 3; Fourth protrusion 4; Fifth protrusion 5; Thickness direction T; Gravity direction V. Detailed Implementation
[0031] To make the technical problems to be solved, the technical solutions, and the beneficial technical effects of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and several exemplary embodiments. It should be understood that the specific embodiments described herein are only for explaining this application and are not intended to limit the scope of protection of this application. Here, for the sake of brevity, elements with the same reference numerals are indicated only once in the drawings when necessary.
[0032] It should be understood that the terms "first," "second," etc., used herein are for descriptive purposes only and should not be construed as indicating or implying relative importance, nor should they be construed as implicitly specifying the number of technical features indicated. Features specified as "first" or "second" may expressly or implicitly indicate that at least one of those features is included.
[0033] In the description of this embodiment, terms such as "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships to illustrate the positional relationships of the constituent elements with reference to the accompanying drawings. This is solely for the convenience of describing this specification and to simplify the description, and is not intended to indicate or imply that the device or element referred to has a specific orientation, or is constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this disclosure. The positional relationships of the constituent elements may be appropriately changed depending on the direction in which each constituent element is described. Therefore, the description is not limited to the terms used in the specification and may be appropriately replaced as appropriate. Here, the T direction corresponds to the thickness direction of the button device 100, and the V direction corresponds to the direction of gravity, wherein the button device 100 is installed in the household appliance 1000 such that the thickness direction T is perpendicular to the direction of gravity V.
[0034] Figure 1 A front view of a household appliance 1000 according to an exemplary embodiment of this application is shown. Figure 2A partial view of a household appliance 1000 according to an exemplary embodiment of this application is shown. Here, the household appliance 1000 is, in particular, a refrigerator. However, other household appliances that are of interest to those skilled in the art may also be considered, such as freezers or washing machines.
[0035] like Figure 1 and Figure 2 As shown, the household appliance 1000 includes a button device 100 according to the invention and a control unit 200 operatively connected to the button device 100. The user inputs commands via the button device 100, which are transmitted to the control unit 200, whereby the control unit 200 executes corresponding programs or controls corresponding actuators. Here, the button device 100 is installed in the household appliance 1000 such that its thickness direction T is perpendicular to the gravitational direction V. Water from the external environment, such as condensate, may flow from above through the button device 100 into the household appliance 1000 under the influence of gravity, particularly reaching the control unit 200. This could cause malfunction of the control unit 200 or even lead to a safety accident.
[0036] Figure 3 A front view of a button device 100 of a household appliance 1000 according to an exemplary embodiment of this application is shown. Figure 4a and Figure 4b A cross-sectional view and an exploded view along section line AA of a key device 100 according to an exemplary embodiment of this application are shown respectively. Figure 5a and Figure 5b A cross-sectional view and an exploded view along section line BB of a button device 100 according to another exemplary embodiment of this application are shown respectively.
[0037] like Figures 3 to 5bAs shown, the button device 100 includes a receiver 10 and a pressing member 20 mounted in the receiver 10 along the thickness direction T. The receiver 10 can be mounted on other components of the household appliance 1000. The pressing member 20 can move relative to the receiver 10 and input operation commands by the user pressing it. A first opening 13 is provided on the front side 11 of the receiver 10 and a second opening 14 is provided on the rear side 12 opposite to the front side 11 along the thickness direction T. A receiving cavity 15 is arranged between the front side 11 and the rear side 12. The pressing member 20 is installed in the receiving cavity 15. The pressing member 20 has a pressing cover 21 that can be embedded in the first opening 13 and a pressing rod 22 extending from the pressing cover 21 toward the rear side 12 of the receiver 10. Here, the size of the press cover 21 is slightly smaller than the size of the first opening 13, so that the press cover 21 can pass smoothly through the first opening 13, and there is no obviously visible gap between the edge of the press cover 21 and the first opening 13, thereby improving the appearance of the press device 100 and preventing excessive water from flowing into the press device 100 at the same time.
[0038] like Figures 4a to 5b As shown, the pressing device 100 includes an elastic element 30, which is arranged in the receiving cavity 15 between the pressing cover 21 of the pressing member 20 and the rear side 12 of the receiving member 10. The elastic force of the elastic element 30 can reset the pressing member 20. Here, the elastic element 30 is specifically constructed as a compression spring and arranged around the pressing rod 22, thereby preventing undesirable displacement of the elastic element 30 in the direction perpendicular to the thickness direction T.
[0039] like Figure 4a and Figure 5aAs shown, the pressing member 20 has a first protrusion 1 extending from the pressing cover 21 toward the rear side 12, and the receiving member 10 has a second protrusion 2 extending from the rear side 12 toward the front side 11. In the thickness direction T, the first protrusion 1 and the second protrusion 2 partially overlap each other, while in the extension plane perpendicular to the thickness direction T, the second protrusion 2 is arranged closer to the second opening 14 than the first protrusion 1. In particular, the first protrusion 1 and the second protrusion 2 are annularly constructed, for example, in a square or circular shape. In this configuration, a flow path is formed around the receiving cavity 15 by the first protrusion 1 and the second protrusion 2. When water flows in from above through the gap between the edge of the press cover 21 and the first opening 13, the water first flows along the first protrusion 1 and then needs to change its flow direction to flow along the second protrusion 2. This significantly increases the flow distance of the water to the second opening 14 and more effectively guides the water to flow downward around the receiving cavity 15 under the action of gravity. Finally, the water flows out from below through the gap between the edge of the press cover 21 and the first opening 13, thereby preventing water from flowing into the household appliance 1000 through the second opening 14 and achieving a good sealing effect for the button device 100.
[0040] For example, such as Figure 4a and Figure 5a As shown, the first protrusion 1 is arranged at the circumferential edge of the press cover 21, so that water is guided by the first protrusion 1 when it reaches the circumferential edge of the press cover 21, which can effectively prevent water from accumulating at the circumferential edge of the press cover 21.
[0041] For example, such as Figure 4a and Figure 5a As shown, the first protrusion 1 and the second protrusion 2 abut against each other in their overlapping portions. This, to a certain extent, hinders the flow of water through the overlapping portion of the first protrusion 1 and the second protrusion 2, thereby improving the sealing effect of the button device 100.
[0042] For example, such as Figure 4a and Figure 5a As shown, the receiving member 10 has an outer side wall 16, which forms a first opening 13. The receiving member 10 forms a groove 17 through the outer side wall 16 and the second protrusion 2. In the assembled state, the first protrusion 1 is inserted into the groove 17. Specifically, as... Figure 5a As shown, a first guide slope 51 is provided on the outer side wall 16 to guide the first protrusion 1 into the groove 17, thereby simplifying the assembly process of the pressing member 20 and the receiving member 10. However, it is also possible that the first guide slope 51 is provided on the first protrusion 1.
[0043] For example, such as Figure 4a and Figure 5aAs shown, the pressing member 20 has a third protrusion 3 extending from the pressing cover 21 toward the rear side 12. In the thickness direction T, the third protrusion 3 and the second protrusion 2 partially overlap each other, while in the extension plane perpendicular to the thickness direction T, the third protrusion 3 is arranged closer to the second opening 14 than the second protrusion 2. The third protrusion 3 and the second protrusion 2 form an additional flow path, thereby further extending the flow distance of water to the second opening 14 and optimizing the sealing effect of the pressing device 100. Of course, it is possible to provide more protrusions with similar structures.
[0044] For example, such as Figure 4a and Figure 5a As shown, the button device 100 also includes a trigger device 40, which is arranged aligned with the pressing lever 22, particularly spaced apart from the second opening 14. During pressing, the distance between the trigger device 40 and the pressing lever 22 along the thickness direction T decreases. The trigger device 40 is manipulated by the change in distance relative to the pressing lever 22. Specifically, the trigger device 40 is configured as a microswitch; during pressing, the pressing member 20 is pressed until the end of the pressing lever 22 abuts against the microswitch, which is capable of responding to minute external forces or displacements and sending a corresponding switching signal to the control unit 200. However, it is also conceivable that the trigger device 40 is configured as another element deemed meaningful by those skilled in the art, such as a Hall sensor, in which case contact between the pressing lever 22 and the trigger device 40 is not necessary.
[0045] For example, such as Figure 4a and Figure 5a As shown, the second opening 14 and the pressing lever 22 are centrally arranged in the key device 100 with their alignment aligned with each other, which allows the pressing lever 22 to move smoothly and without collision through the second opening 14. In particular, the entire key device 100 is constructed symmetrically about the central plane, thereby enabling cost-effective manufacturing and easy assembly of the key device 100.
[0046] For example, such as Figure 4a and Figure 5a As shown, in the released state of the button device 100, the upper surface of the pressing cover 21 is flush with the front side 11 of the receiving member 10. This improves the appearance of the household appliance 1000. Here, in the released state of the button device 100, the end face of the pressing lever 22 facing the trigger device 40 can protrude from the rear side 12 toward the trigger device 40, as... Figure 4a As shown. However, it is also possible that the end face of the pressing rod 22 facing the trigger device 40 is flush with the rear side 12 of the receiver 10, as shown. Figure 5a As shown.
[0047] For example, such as Figure 5a As shown, the receiver 10 has a fourth protrusion 4 extending from the rear side 12 toward the front side 11, the fourth protrusion being arranged adjacent to the second opening 14 in a manner surrounding the second opening 14. The fourth protrusion 4 further prevents water in the receiving cavity 15 from flowing into the second opening 14.
[0048] For example, such as Figure 5a As shown, the pressing member 20 has a fifth protrusion 5 extending from the pressing cover 21 toward the rear side 12. The fifth protrusion 5 and the fourth protrusion 4 are opposite each other along the thickness direction T and together form a limiting structure for the pressing rod 22. In the released state, the distance between the fifth protrusion 5 and the fourth protrusion 4 is the stroke length of the pressing rod 22, which can reach a desired preset position via this stroke length. When the pressing member 20 is pressed, when the pressing rod 22 reaches the preset position, the fourth protrusion 4 and the fifth protrusion 5 contact each other and prevent further movement of the pressing member 20, thereby avoiding damage to the trigger device 40 by the pressing rod 22.
[0049] For example, such as Figure 5a As shown, the elastic element 30, constructed as a compression spring, is arranged around the fourth protrusion 4 and the fifth protrusion 5 to achieve positioning of the elastic element 30 in a direction perpendicular to the thickness direction T. A second guide ramp 52 is provided on the fourth protrusion 4 to guide the arrangement of the elastic element 30 around the fourth protrusion 4. The second guide ramp 52 simplifies the assembly of the elastic element 30 on the receiving member 10.
[0050] For example, such as Figure 5a As shown, water storage tanks 53 are provided in the fourth protrusion 4 and the fifth protrusion 5. These tanks can at least partially intercept and collect water flowing into the receiving cavity 15 via the first protrusion 1 and the second protrusion 2, thereby preventing water from flowing into the household appliance 1000 through the second opening 14 as much as possible. In particular, dehumidifying material can also be arranged in the receiving cavity 15. This optimizes the sealing effect of the button device 100 as much as possible.
[0051] For example, such as Figure 5aAs shown, the receiving member 10 has at least one hook 19, and the pressing member 20 has a slot 23 for the hook 19, the length of which along the thickness direction T is greater than or equal to the stroke length of the pressing rod 22. In the released state of the button device 100, the hook 19 stops at the lower edge of the slot 23. In this case, when the button device 100 is pressed, the hook 19 moves upward relative to the slot 23 until the pressing rod 22 reaches a preset position, for example, pressing against the trigger device 40, at which point the hook 19 can reach the upper edge of the slot 23; and when the button device 100 is released, the hook 19 stopping at the lower edge of the slot 23 effectively prevents the pressing member 20 from unintentionally falling from the receiving member 10. Here, in particular, multiple hooks 19 and slots 23 can be provided in the circumferential direction.
[0052] For example, such as Figure 4a and Figure 4b As shown, the receiving part 10 is a one-piece injection-molded part, which reduces the number of parts and simplifies the assembly process. However, it is also possible that, as... Figure 5a and Figure 5b As shown, the receiving member 10 has a front plate 61 and a rear plate 62 with separate structures. A first opening 13 is formed on the front plate 61, and a second opening 14 is formed on the rear plate 62. The front plate 61 and the rear plate 62 are connected to each other in a form-locking manner. This can reduce the difficulty of design and manufacturing.
[0053] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of this application, even when only a single embodiment is described with respect to a particular feature. The feature examples provided in this application are intended for illustrative purposes and not for limitation, unless otherwise stated. In practice, multiple features may be combined with each other as needed and where technically feasible. Various substitutions, modifications, and alterations are also conceived without departing from the spirit and scope of this application.
Claims
1. A button device (100) for a household appliance (1000), characterized in that, The button device (100) includes at least: - A receiver (10) having a first opening (13) on a front side (11) and a second opening (14) on a rear side (12) opposite to the front side (11) along the thickness direction (T), and a receiving cavity (15) is arranged between the front side (11) and the rear side (12). - A pressing member (20), the pressing member (20) having a pressing cover (21) that can be embedded in the first opening (13) and a pressing rod (22) extending from the pressing cover (21) toward the rear side (12); and - An elastic element (30) is arranged in the receiving cavity (15) between the pressing cover (21) of the pressing element (20) and the rear side (12) of the receiving element (10). The pressing member (20) has a first protrusion (1) extending from the pressing cover (21) toward the rear side (12), and the receiving member (10) has a second protrusion (2) extending from the rear side (12) toward the front side (11). In the thickness direction (T), the first protrusion (1) and the second protrusion (2) partially overlap each other, while in the extension plane perpendicular to the thickness direction (T), the second protrusion (2) is arranged closer to the second opening (14) than the first protrusion (1).
2. The button device (100) according to claim 1, characterized in that, The first protrusion (1) and the second protrusion (2) are arranged in a ring shape; and / or The first protrusion (1) is disposed at the circumferential edge of the press cover (21); and / or The first protrusion (1) and the second protrusion (2) abut against each other in their overlapping portions.
3. The button device (100) according to claim 1 or 2, characterized in that, The receiving member (10) forms a groove (17) through the outer wall (16) and the second protrusion (2), and the first protrusion (1) is inserted into the groove (17). A first guide slope (51) is provided on the outer wall (16) and / or the first protrusion (1) to guide the first protrusion (1) into the groove (17).
4. The button device (100) according to claim 1 or 2, characterized in that, The pressing member (20) has a third protrusion (3) extending from the pressing cover (21) toward the rear side (12). In the thickness direction (T), the third protrusion (3) and the second protrusion (2) partially overlap each other, and in the extending plane, the third protrusion (3) is arranged closer to the second opening (14) than the second protrusion (2).
5. The button device (100) according to claim 1 or 2, characterized in that, The receiver (10) has a fourth protrusion (4) extending from the rear side (12) toward the front side (11), the fourth protrusion (4) being arranged adjacent to the second opening (14) in a manner surrounding the second opening (14).
6. The button device (100) according to claim 5, characterized in that, The pressing member (20) has a fifth protrusion (5) extending from the pressing cover (21) toward the rear side (12), the fifth protrusion (5) and the fourth protrusion (4) together forming a limiting structure for the pressing rod (22), wherein, in the released state, the distance between the fifth protrusion (5) and the fourth protrusion (4) is the stroke length of the pressing rod (22).
7. The button device (100) according to claim 6, characterized in that, The elastic element (30) is constructed as a compression spring, which is arranged around the fourth protrusion (4) and the fifth protrusion (5), wherein a second guide slope (52) is provided on the fourth protrusion (4) to guide the arrangement of the elastic element (30) around the fourth protrusion (4); and / or Water storage tanks (53) are provided in the fourth protrusion (4) and the fifth protrusion (5).
8. The button device (100) according to claim 1 or 2, characterized in that, A water guide groove (18) is provided on the side of the second protrusion (2) facing the first protrusion (1); and / or Dehumidifying material is arranged in the receiving cavity (15).
9. The button device (100) according to claim 1 or 2, characterized in that, The button device (100) includes a trigger device (40) arranged aligned with the pressing rod (22). During pressing, the distance of the trigger device (40) relative to the pressing rod (22) along the thickness direction (T) decreases.
10. The button device (100) according to claim 9, characterized in that, The triggering device (40) is configured as a micro switch. During the pressing process, the pressing member (20) is pressed until the end of the pressing rod (22) abuts against the micro switch; and / or In the released state of the button device (100), the end face of the pressing rod (22) facing the trigger device (40) is flush with or protrudes from the rear side (12) toward the trigger device (40).
11. The button device (100) according to claim 1 or 2, characterized in that, The second opening (14) and the pressing lever (22) are centrally arranged in the button device (100) in a manner aligned with each other; and / or The keypad device (100) is constructed symmetrically about the central plane; and / or In the released state of the button device (100), the upper surface of the press cover (21) and the front side (11) of the receiver (10) are flush.
12. The button device (100) according to claim 1 or 2, characterized in that, The receiving member (10) has at least one hook (19), and the pressing member (20) has a groove (23) for the hook (19), the length of the groove (23) along the thickness direction (T) being greater than or equal to the stroke length of the pressing rod (22), wherein, in the released state of the button device (100), the hook (19) stops at the lower edge of the groove (23).
13. The button device (100) according to claim 1 or 2, characterized in that, The receiving component (10) is a one-piece injection molded part; or The receiving member (10) has a front plate (61) and a rear plate (62) with separate structures, the front plate (61) and the rear plate (62) being connected to each other in a form-locking manner.
14. A household appliance (1000), characterized in that, The household appliance (1000) includes a button device (100) according to any one of the preceding claims and a control unit (200) operatively connected to the button device (100).
15. The household appliance (1000) according to claim 14, characterized in that, The household appliance (1000) is a refrigerator; and / or The button device (100) is arranged such that the thickness direction (T) of the button device (100) is perpendicular to the direction of gravity (V).