Knob device and household appliance

Abstract

The application provides a knob device and a household appliance. The knob device comprises a decoration part provided with a mounting hole; a knob structure comprising a first knob provided with a rotating shaft at a first end, the rotating shaft penetrating the mounting hole and being in clearance fit with the mounting hole, the first knob further comprising a driving part, the knob structure being movable relative to the decoration part along the axial direction of the rotating shaft; and a second knob covered on a second end of the first knob and being in rotational connection with the second end of the first knob; when the driving part is triggered, the first knob is rotatable relative to any one of the decoration part and the second knob, or the first knob is capable of driving the second knob to rotate relative to the decoration part. The application rationally sets the structure of the knob device, and even if the second knob is rotated, the cooking zone cannot be started in the case that the driving part of the first knob is not triggered, so that even if the second knob is mistakenly touched by a pet, the cooking zone cannot be started.

Description

Technical Field

[0001] This application relates to the field of knob device technology, and more specifically, to a knob device and a household appliance. Background Technology

[0002] Household appliances consist of a cooktop and knobs. Turning the knob activates the cooktop, heating the appliances on it. Starting the cooktop is a simple and straightforward process. Pets may mimic humans by turning the knobs, thus activating the cooktop. This can lead to accidents and significantly reduce the safety and reliability of using household appliances. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the first aspect of this application proposes a knob device.

[0005] The second aspect of this application proposes a household appliance.

[0006] In view of the above, the first aspect of this application provides a knob device, comprising: a decorative part having a mounting hole; a knob structure comprising: a first knob having a first end having a rotating shaft passing through the mounting hole, the rotating shaft and the mounting hole being clearance-fitted, the first knob further having a driving part, the knob structure being movable relative to the decorative part along the axial direction of the rotating shaft; and a second knob covering the second end of the first knob, the second knob being rotatably connected to the second end of the first knob; when the driving part is triggered, the first knob can rotate relative to either the decorative part or the second knob, or the first knob can drive the second knob to rotate relative to the decorative part.

[0007] This application provides a knob device comprising a decorative element and a knob structure. The knob structure includes a first knob and a second knob.

[0008] Household appliances include an appliance body and a knob mechanism. The appliance body includes a circuit board assembly and a cooktop. The circuit board assembly is electrically connected to the cooktop and controls its operation. The circuit board assembly includes a bracket. The pivot of the second knob is used in conjunction with the bracket. When the knob moves along the axis of the pivot toward the appliance body, the pivot contacts the bracket. Rotation of the pivot drives the bracket to move, and the circuit board assembly controls the start of the cooktop.

[0009] A decorative element for the knob mechanism is mounted on the outer surface of the appliance body. The decorative element has mounting holes.

[0010] The first knob has a first end and a second end, which are arranged opposite to each other. The first end of the first knob has a pivot. The pivot passes through a mounting hole with a clearance fit, allowing the pivot to rotate relative to the decorative element and also to move relative to the decorative element along its axial direction.

[0011] Understandably, the second knob cover is located at the second end of the first knob. When the knob assembly is installed on the appliance body, with the second knob facing the user, the first knob will be at least partially obscured by the second knob. The second knob is the part of the knob that is easily accidentally activated.

[0012] When the knob structure moves axially along the shaft towards the appliance body and contacts the bracket of the circuit board assembly, and the drive unit is triggered, the first knob can rotate relative to either the decorative piece or the second knob. Rotating the first knob causes the bracket to rotate, thus starting the stove. The second knob is the part of the knob device facing the user, and the second knob will block at least a part of the first knob. Therefore, even if a pet accidentally touches the knob device, the pet will directly contact the second knob, not the first knob. Furthermore, the first knob can rotate relative to the second knob; that is, when the second knob is rotated, the second knob cannot drive the first knob to rotate, and thus cannot drive the bracket of the circuit board assembly to rotate, therefore, the stove cannot be started. Thus, even if a pet accidentally turns the second knob, the stove will not be started, fundamentally solving the problem of pets accidentally starting the stove by touching the knob device.

[0013] Alternatively, when the knob structure moves axially towards the appliance body along the shaft and contacts the bracket of the circuit board assembly, and the drive unit is triggered, the first knob can drive the second knob to rotate relative to the decorative part, thereby driving the bracket to rotate, thus activating the stove. The second knob is the part of the knob device facing the user, and the second knob will block at least a part of the first knob. In this way, even if a pet accidentally touches the knob device, the pet will directly touch the second knob, not the first knob. In addition, the second knob is rotatably connected to the second end of the first knob, that is, the second knob can rotate relative to the first knob. If the drive unit of the first knob is not triggered, the second knob cannot directly drive the first knob to rotate. Only when the drive unit of the first knob is triggered can the first knob and the second knob be combined into a whole, and only then can the first knob drive the second knob to rotate. The first knob serves as the mounting carrier for the drive unit. With the drive unit blocked by the second knob, it will not directly face the pet. The pet's paws cannot directly grasp the drive unit of the first knob, that is, it cannot directly trigger the drive unit. In this way, even if a pet accidentally turns the second knob, the stove will not start if the drive unit is not triggered, thus fundamentally solving the problem of pets accidentally touching the knob device and starting the stove.

[0014] Therefore, it can be seen that the present application has reasonably set the structure of the knob device, so that the knob structure includes two independent first knobs and second knobs. If the driving part of the first knob is not triggered, the stove cannot be started even if the second knob is rotated. In this way, even if a pet accidentally touches the second knob, the stove will not be started accordingly. Therefore, the safety and reliability of the product are greatly improved, the occurrence of safety accidents can be effectively avoided, and the performance of the product is improved.

[0015] In some technical solutions, optionally, a second knob is exposed outside the drive unit.

[0016] In this technical solution, by defining the cooperation structure between the drive unit and the second knob, the drive unit is exposed to the second knob. That is, the second knob will not block the drive unit, and the user can clearly observe the position of the drive unit from the outside of the knob device, which makes it convenient for the user to trigger the drive unit.

[0017] In some technical solutions, optionally, the first knob includes: a knob body connected between the second end of the first knob and the rotating shaft; a driving part disposed on the knob body; or when the driving part is triggered, the driving part connects the knob body and the second knob.

[0018] In this technical solution, the first knob includes a knob body, which is located between the second end of the first knob and the rotating shaft. The knob body is connected to the second end of the first knob and the rotating shaft.

[0019] The drive unit is located on the knob body. That is, the knob body not only connects the second end of the first knob to the rotating shaft, but also supports the drive unit. This enriches the function of the knob body, helps to reduce the number of components in the knob device, and helps to reduce the production cost of the knob device.

[0020] Alternatively, when the drive unit is triggered, it connects the knob body and the second knob. That is, the knob body not only connects the second end of the first knob to the pivot, but also engages with the drive unit to allow the first knob to rotate the second knob relative to the decorative element when the drive unit is triggered. This arrangement enriches the functions of the knob body, reduces the number of components in the knob device, and lowers production costs.

[0021] In some technical solutions, optionally, along the axial direction of the rotating shaft, the knob body is located between the second knob and the decorative part, and the drive part is located on the outer periphery of the knob body.

[0022] In this technical solution, the structure of the knob body is defined based on the fact that the driving part is located in the knob body.

[0023] When the drive unit is located on the knob body, the knob body is positioned between the second knob and the decorative element along the axial direction of the rotation axis. The drive unit is located on the outer periphery of the knob body. The drive unit is not obstructed by the second knob and can be exposed through the gap between the second knob and the decorative element, thus facilitating user activation. For example, by grasping the drive unit on the outer periphery of the knob body with one hand and rotating the knob body to turn the first knob, the first knob rotates relative to either the decorative element or the second knob.

[0024] In some technical solutions, optionally, along the axial direction of the rotating shaft, the height of the second knob is t1, and the distance between the opposite ends of the decorative piece and the second knob is t2; wherein, t1 / t2≥0.2.

[0025] In this technical solution, the matching structure of the decorative parts and the knob structure is defined.

[0026] Along the axis of rotation, the height of the second knob is t1.

[0027] Along the axis of rotation, the distance between the opposite ends of the decorative piece and the second knob is t2. That is, along the axis of rotation, the end of the decorative piece opposite to the second knob is called the first end face, the end of the second knob opposite to the decorative piece is called the second end face, and the distance between the first end face and the second end face is t2.

[0028] Wherein, t1 / t2≥0.2, this setting limits the ratio of the height of the second knob to the overall height of the knob device along the axial direction of the rotating shaft, so as to ensure the volume of the second knob, ensure the protection area of ​​the knob device, reduce the probability of the knob device being accidentally touched, and provide structural support for ensuring the safety and reliability of the product.

[0029] In some technical solutions, the first knob may optionally include an indicator portion located on the outer periphery of the knob body.

[0030] In this technical solution, the structure of the knob body is further defined. The first knob also includes an indicator part, which is located on the outer periphery of the knob body. The indicator part has the function of indicating the rotation position of the knob body, so that the user can confirm the rotation angle of the first knob according to the indicator part and clearly understand the current usage status of the stove.

[0031] In some technical solutions, optionally, the drive unit is movably connected to the second knob, and the drive unit can switch between a first position and a second position relative to the second knob; when an external force is applied to the drive unit, the drive unit is located in the first position, and the drive unit is connected to the knob body and the second knob; when the external force applied to the drive unit is removed, the drive unit returns to the second position, and the drive unit is located on one side of the first knob.

[0032] In this technical solution, the cooperation structure between the drive unit and the second knob is defined based on the fact that the first knob can drive the second knob to rotate relative to the decorative part.

[0033] The drive unit is movably connected to the second knob, and the drive unit can switch between a first position and a second position relative to the second knob. For example, when an external force is applied to the drive unit (i.e., the drive unit is triggered), the drive unit will move to the first position. For example, when the external force applied to the drive unit is removed (i.e., the triggering of the drive unit is released), the drive unit will return to the second position.

[0034] Specifically, when the drive unit is triggered, the drive unit is in the first position, and the drive unit connects the knob body and the second knob. That is, when the drive unit is in the first position, the knob body and the second knob are connected as a whole through the drive unit, so that the first knob can drive the second knob to rotate relative to the decorative piece.

[0035] Specifically, when the trigger on the drive unit is released, the drive unit resets to the second position, and the drive unit is located on one side of the first knob. At this time, the drive unit and the first knob are in a separated state, and the drive unit and the first knob are not connected. The first knob cannot drive the second knob to rotate relative to the decorative piece.

[0036] In some technical solutions, optionally, the knob body is located inside the second knob, the side of the second knob is provided with a through hole, and the driving part passes through the through hole; the knob device also includes a first elastic element, the first elastic element is located inside the through hole, the first elastic element is sleeved on the driving part, and the first elastic element is used to drive the driving part to reset when the external force acting on the driving part is removed.

[0037] In this technical solution, the structure of the knob device is further defined, the knob body is located inside the second knob, the side of the second knob is provided with a through hole, and the driving part passes through the through hole.

[0038] The knob device also includes a first elastic element located within the through hole and sleeved on the drive unit. When the external force applied to the drive unit is removed, the first elastic element drives the drive unit to reset to the second position. That is, when the user presses the drive unit, it moves along the through hole toward the knob body and connects with it. At this time, the knob body and the second knob are connected as a whole through the drive unit. When the user removes their hand from the drive unit, i.e., when the external force applied to the drive unit is removed, the drive unit resets to the second position under the action of the first elastic element. This design ensures that the drive unit automatically resets under the action of the first elastic element after the user removes their hand. This prevents situations where a pet might accidentally activate the knob device and start the stove due to the user forgetting to manually reset the drive unit, further improving the safety and reliability of the product.

[0039] In some technical solutions, optionally, the through hole includes a first connecting segment and a second connecting segment connected together, the second connecting segment being located between the first connecting segment and the knob body, and the flow cross-sectional area of ​​the first connecting segment being larger than the flow cross-sectional area of ​​the second connecting segment; the drive unit includes a drive body and a baffle connected together, the drive body passing through the through hole, the baffle being located at the first connecting segment, and a first elastic member being sleeved on the drive body, the first elastic member abutting between the connection between the first connecting segment and the second connecting segment and the baffle.

[0040] In this technical solution, the mating structure of the through hole, the driving part, and the first elastic element is refined.

[0041] The through-hole includes a first connecting segment and a second connecting segment, which are connected. The second connecting segment is located between the first connecting segment and the knob body. The flow cross-sectional area of ​​the first connecting segment is larger than that of the second connecting segment, that is, the flow cross-sectional areas of the first connecting segment and the second connecting segment are not equal. A stepped surface is formed at the connection between the first connecting segment and the second connecting segment, and the stepped surface acts as a limiting first elastic element.

[0042] The drive unit includes a drive body and a baffle. The drive body is connected to the baffle and passes through a through hole. The baffle is located at the first connecting section. A first elastic member is sleeved on the drive body and abuts against the connection between the first and second connecting sections and the baffle.

[0043] When an external force is applied to the drive unit, the distance between the connection point of the first connecting segment and the second connecting segment and the baffle decreases accordingly. The first elastic element is in a compressed state, and the drive body extends out of the second knob and connects with the knob body, so that the knob body and the second knob are connected as a whole through the drive unit.

[0044] When the external force acting on the drive unit is removed, the distance between the connection between the first and second connecting segments and the baffle increases accordingly. The first elastic element returns to its original shape, and the first elastic element drives the drive unit to reset to the second position, so that the drive unit separates from the knob body.

[0045] In some technical solutions, optionally, the second end of the first knob and one of the second knobs are provided with a protrusion, and the other is provided with a connecting groove; the knob device also includes a bearing, the inner peripheral wall of the bearing is connected to the protrusion, and the outer peripheral wall of the bearing is connected to the groove sidewall of the connecting groove.

[0046] In this technical solution, the mating structure of the first knob and the second knob is defined.

[0047] The second end of the first knob and one of the second knobs have a protrusion, while the other has a connecting groove. That is, the second end of the first knob has a protrusion, and the second knob has a connecting groove. Alternatively, the second end of the first knob has a connecting groove, and the second knob has a protrusion.

[0048] The knob device also includes a bearing, with the inner peripheral wall of the bearing connected to a protrusion, and the outer peripheral wall of the bearing connected to the side wall of the connecting groove.

[0049] This design allows the second knob to be mounted on the second end of the first knob, with the second knob rotatably connected to the second end of the first knob. Simultaneously, the bearing connects the first and second knobs as a single unit, enabling the knob structure to move axially relative to the decorative element along the axis of rotation. This allows the knob device to be activated by pressing and rotating to start the stove.

[0050] In some technical solutions, optionally, the second end of the first knob and one of the second knobs are provided with a groove, and the other is provided with a slider. The slider is slidably connected to the groove, and the groove can limit the slider along the axial direction of the rotating shaft.

[0051] In this technical solution, the mating structure of the first knob and the second knob is defined.

[0052] The second end of the first knob has a groove, and one of the second knobs has a slider. That is, the second end of the first knob has a groove, and the second knob has a slider. Alternatively, the second end of the first knob has a slider, and the second knob has a groove.

[0053] The slider is located within a groove and can slide along the groove. The groove can limit the slider along the axial direction of the rotating shaft, meaning that the slider will not disengage from the groove along the axial direction of the rotating shaft. The slider and the groove cooperate to assemble the first and second knobs into a single unit. The knob structure can move as a whole relative to the decorative part along the axial direction of the rotating shaft, and can also meet the need to activate the stove by pressing and rotating the knob device.

[0054] In some technical solutions, optionally, a slot is provided on the side of the rotating shaft opposite to the second knob.

[0055] In this technical solution, the structure of the rotating shaft is further defined such that a slot is provided on the side of the rotating shaft away from the second knob, and the slot is used to cooperate with the bracket of the circuit board assembly.

[0056] Specifically, when the knob structure moves along the axis of the rotating shaft towards the appliance body, the bracket of the circuit board assembly inserts into the slot. At this time, rotating the second knob can move the bracket to turn on the stove. When the knob structure moves away from the appliance body along the axis of the rotating shaft, the slot of the rotating shaft separates from the bracket of the circuit board assembly. At this time, even if the second knob is rotated, it cannot move the bracket and the stove cannot be turned on.

[0057] In some technical solutions, the decorative element may optionally have a rim located around the periphery of the knob structure.

[0058] In this technical solution, the structure of the decorative component is further defined. The decorative component has a surrounding edge located around the knob structure. The surrounding edge serves to block the connection between the knob structure and the decorative component, ensuring the aesthetics of the knob device after assembly with the electrical body. Simultaneously, the surrounding edge also serves to prevent moisture and dirt from the external environment from entering the knob structure, providing structural support for ensuring the lifespan and performance of the knob device.

[0059] The second aspect of this application proposes a household appliance, including a knob device as described in the first aspect.

[0060] The household appliance provided in this application includes a knob device as described in the first aspect, and therefore has all the beneficial effects of the aforementioned knob device, which will not be described in detail here.

[0061] In some technical solutions, optionally, the household appliance further includes: an appliance body, which includes a circuit board assembly, a cooktop, and a second elastic element; the circuit board assembly is electrically connected to the cooktop and includes a bracket; a decorative element is connected to the outer surface of the appliance body; a rotating shaft passes through the appliance body; the second elastic element is used to drive the knob structure to reset along the axial direction of the rotating shaft; when the knob structure moves towards the appliance body along the axial direction of the rotating shaft, a portion of the bracket is inserted into the slot of the rotating shaft; the circuit board assembly is used to control the cooktop to work when the first knob drives the bracket to move.

[0062] This technical solution further defines the structure of household appliances.

[0063] Household appliances also include the appliance body. The appliance body includes circuit board assemblies, cooktops, and secondary flexible components.

[0064] The circuit board assembly is electrically connected to the stove and controls its operation. The circuit board assembly includes a bracket. The pivot of the second knob is used in conjunction with the bracket. When the knob moves axially toward the appliance body along the pivot, a portion of the bracket inserts into the slot of the pivot, and the second elastic element is compressed. The rotation of the pivot of the first knob drives the bracket to move, and the circuit board assembly controls the stove's operation accordingly.

[0065] After the external force acting on the knob structure is removed, the second elastic element returns to its original shape. The second elastic element drives the knob structure to return to its original shape along the axis of the rotating shaft, so that the rotating shaft separates from the support of the circuit board assembly.

[0066] In some technical solutions, optionally, the appliance body is provided with a cooking cavity located on one side of the stove; the appliance body is also provided with a cooking structure, which is connected to the cooking cavity; the cooking structure includes at least one of the following or a combination thereof: a microwave generator, a heating element, and a steam generator.

[0067] This technical solution further defines the structure of household appliances.

[0068] The appliance body has a cooking cavity located on one side of the stove. Food can be placed inside the cooking cavity and cooked through the cooking structure.

[0069] The cooking structure is in communication with the cooking cavity. Exemplarily, the cooking structure includes at least one or a combination of the following: a microwave generator, a heating element, and a steam generator.

[0070] When the cooking setup includes a microwave generator, the household appliance is a stovetop or microwave oven.

[0071] When the cooking structure includes a heating element, the household appliance is a combination cooktop and oven.

[0072] When the cooking structure includes a steam generator, the household appliance is a combination cooktop and steam oven.

[0073] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0074] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0075] Figure 1 A partial structural schematic diagram of a household appliance according to an embodiment of this application is shown;

[0076] Figure 2 for Figure 1 A magnified view of part A of the household appliance shown;

[0077] Figure 3 A cross-sectional view of the knob device according to the first embodiment of this application is shown;

[0078] Figure 4 An exploded view of the knob device according to the first embodiment of this application is shown;

[0079] Figure 5 A cross-sectional view of a knob device according to a second embodiment of this application is shown;

[0080] Figure 6 An exploded view of the knob device according to a second embodiment of this application is shown;

[0081] Figure 7 A partial structural schematic diagram of the second knob and slider according to an embodiment of this application is shown.

[0082] in, Figures 1 to 7 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0083] 10 Knob device, 100 Decorative part, 112 Mounting hole, 114 Embossing, 200 Knob structure, 210 First knob, 212 Rotating shaft, 2122 Slot, 214 Drive part, 2142 Drive body, 2144 Baffle, 216 Knob body, 218 Marking part, 220 Second knob, 222 Through hole, 2222 First connecting section, 2224 Second connecting section, 300 First elastic element, 400 Protrusion, 500 Connecting groove, 600 Bearing, 700 Slide groove, 800 Slider, 90 Household appliance, 900 Appliance body, 910 Circuit board assembly, 912 Bracket, 920 Stovetop, 930 Second elastic element, 940 Cooking cavity, 950 Cooking structure. Detailed Implementation

[0084] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0085] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0086] The following reference Figures 1 to 7 This application describes a knob device 10 and a household appliance 90 according to some embodiments.

[0087] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a knob device 10 according to some embodiments of this application includes a decorative element 100 and a knob structure 200.

[0088] The decorative element 100 is provided with mounting holes 112.

[0089] The knob structure 200 includes a first knob 210 and a second knob 220.

[0090] The first end of the first knob 210 has a pivot 212.

[0091] The rotating shaft 212 passes through the mounting hole 112.

[0092] The rotating shaft 212 is clearance-fitted with the mounting hole 112.

[0093] The first knob 210 also has a drive unit 214.

[0094] The knob structure 200 is movable relative to the decorative element 100 along the axis of the pivot 212.

[0095] The second knob 220 is mounted on the second end of the first knob 210.

[0096] The second knob 220 is rotatably connected to the second end of the first knob 210.

[0097] When the drive unit 214 is triggered, the first knob 210 can rotate relative to either the decorative piece 100 or the second knob 220, or the first knob 210 can drive the second knob 220 to rotate relative to the decorative piece 100.

[0098] The knob device 10 provided in this application includes a decorative element 100 and a knob structure 200. The knob structure 200 includes a first knob 210 and a second knob 220.

[0099] Household appliance 90 includes an appliance body 900 and a knob device 10. The appliance body 900 includes a circuit board assembly 910 and a cooktop 920. The circuit board assembly 910 is electrically connected to the cooktop 920 and controls the operation of the cooktop 920. The circuit board assembly 910 includes a bracket 912. The pivot 212 of the second knob 220 is used in conjunction with the bracket 912. When the knob structure 200 moves along the axial direction of the pivot 212 toward the appliance body 900, the pivot 212 contacts the bracket 912. Rotation of the pivot 212 drives the bracket 912 to move, and the circuit board assembly 910 controls the start of the cooktop 920.

[0100] The decorative element 100 of the knob device 10 is mounted on the outer surface of the electrical body 900. The decorative element 100 is provided with mounting holes 112.

[0101] The first knob 210 has a first end and a second end, with the first end and the second end of the first knob 210 being disposed opposite each other. The first end of the first knob 210 has a rotating shaft 212. The rotating shaft 212 passes through the mounting hole 112, and the rotating shaft 212 is clearance-fitted with the mounting hole 112. The rotating shaft 212 is rotatable relative to the decorative part 100, and the rotating shaft 212 is also rotatable relative to the decorative part 100 along its axial direction.

[0102] Understandably, the second knob 220 covers the second end of the first knob 210. When the knob device 10 is installed on the electrical body 900, the second knob 220 faces the user, and the first knob 210 is at least partially blocked by the second knob 220. The second knob 220 is a knob part that is easily accidentally touched.

[0103] When the knob structure 200 moves axially along the shaft 212 toward the appliance body 900 and the shaft 212 contacts the bracket 912 of the circuit board assembly 910, and the drive unit 214 is triggered, the first knob 210 can rotate relative to either the decorative piece 100 or the second knob 220. Rotating the first knob 210 can drive the bracket 912 to rotate, thereby activating the stove 920. The second knob 220 is the part of the knob device 10 facing the user, and the second knob 220 will block at least a part of the first knob 210. Thus, even if a pet accidentally touches the knob device 10, the pet will directly contact the second knob 220 instead of the first knob 210. In addition, the first knob 210 can rotate relative to the second knob 220. That is, when the second knob 220 is rotated, the second knob 220 cannot drive the first knob 210 to rotate, and therefore cannot drive the bracket 912 of the circuit board assembly 910 to rotate. Therefore, the stove 920 cannot be activated. In this way, even if a pet accidentally turns the second knob 220, the stove 920 will not be started, thus fundamentally solving the problem of a pet accidentally touching the knob device 10 and starting the stove 920.

[0104] Alternatively, when the knob structure 200 moves axially along the shaft 212 toward the appliance body 900 and the shaft 212 contacts the bracket 912 of the circuit board assembly 910, and the drive unit 214 is triggered, the first knob 210 can drive the second knob 220 to rotate relative to the decorative piece 100, thereby driving the bracket 912 to rotate, so as to start the stove 920. The second knob 220 is the part of the knob device 10 facing the user, and the second knob 220 will block at least a part of the first knob 210. In this way, even if a pet accidentally touches the knob device 10, the pet will directly touch the second knob 220 instead of the first knob 210. Furthermore, the second knob 220 is rotatably connected to the second end of the first knob 210, meaning the second knob 220 can rotate relative to the first knob 210. When the drive part 214 of the first knob 210 is not triggered, the second knob 220 cannot directly drive the first knob 210 to rotate. Only when the drive part 214 of the first knob 210 is triggered can the first knob 210 and the second knob 220 be combined into a single unit, allowing the first knob 210 to drive the second knob 220 to rotate. The first knob 210 serves as the mounting carrier for the drive part 214. Because the drive part 214 is obstructed by the second knob 220, it does not directly face the pet, preventing the pet's paws from directly grasping the drive part 214 of the first knob 210, thus preventing direct triggering of the drive part 214. In this way, even if the pet accidentally turns the second knob 220, the stove 920 will not start if the drive unit 214 is not triggered, thus fundamentally solving the problem of the pet accidentally touching the knob device 10 and starting the stove 920.

[0105] Therefore, it can be seen that the present application has reasonably set the structure of the knob device 10, so that the knob structure 200 includes two independent first knobs 210 and second knobs 220. When the driving part 214 of the first knob 210 is not triggered, even if the second knob 220 is rotated, the stove 920 cannot be started. In this way, even if a pet accidentally touches the second knob 220, the stove 920 will not be started accordingly. Therefore, the safety and reliability of the product are greatly improved, the occurrence of safety accidents can be effectively avoided, and the performance of the product is improved.

[0106] This embodiment provides a knob device 10. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features: the second knob 220 is exposed outside the drive unit 214.

[0107] In this embodiment, by defining the cooperation structure between the drive unit 214 and the second knob 220, the drive unit 214 is exposed outside the second knob 220. That is, the second knob 220 will not block the drive unit 214, and the user can clearly observe the position of the drive unit 214 from the outside of the knob device 10, which makes it convenient for the user to trigger the drive unit 214.

[0108] This embodiment provides a knob device 10. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features, such as... Figure 3 and Figure 5 As shown, the first knob 210 includes a knob body 216.

[0109] The knob body 216 is connected between the second end of the first knob 210 and the rotating shaft 212.

[0110] The drive unit 214 is located on the knob body 216.

[0111] Alternatively, when the drive unit 214 is triggered, the drive unit 214 connects to the knob body 216 and the second knob 220.

[0112] In this embodiment, the first knob 210 includes a knob body 216, which is located between the second end of the first knob 210 and the rotating shaft 212. The knob body 216 is connected to the second end of the first knob 210 and to the rotating shaft 212.

[0113] The drive unit 214 is located on the knob body 216. That is, the knob body 216 has the function of connecting the second end of the first knob 210 and the rotating shaft 212. The knob body 216 also has the function of supporting the drive unit 214. This enriches the function of the knob body 216, which helps to reduce the number of components of the knob device 10 and reduces the production cost of the knob device 10.

[0114] Alternatively, when the drive unit 214 is triggered, it connects the knob body 216 and the second knob 220. That is, the knob body 216 serves to connect the second end of the first knob 210 and the rotating shaft 212, and it also engages with the drive unit 214 to allow the first knob 210 to drive the second knob 220 to rotate relative to the decorative element 100 when the drive unit 214 is triggered. This arrangement enriches the functions of the knob body 216, reduces the number of components in the knob device 10, and lowers the production cost of the knob device 10.

[0115] This embodiment provides a knob device 10. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features, such as... Figure 3 As shown, along the axial direction of the rotating shaft 212, the knob body 216 is located between the second knob 220 and the decorative part 100, and the driving part 214 is provided on the outer periphery of the knob body 216.

[0116] In this embodiment, the structure of the knob body 216 is defined based on the fact that the drive unit 214 is provided in the knob body 216.

[0117] When the drive unit 214 is provided on the knob body 216, the knob body 216 is located between the second knob 220 and the decorative element 100 along the axial direction of the rotation shaft 212. The drive unit 214 is located on the outer periphery of the knob body 216. The drive unit 214 is not obstructed by the second knob 220, and the drive unit 214 can be exposed through the gap between the second knob 220 and the decorative element 100, thus facilitating the user to trigger the drive unit 214. For example, by holding the drive unit 214 on the outer periphery of the knob body 216 with one hand, and rotating the first knob 210 by rotating the knob body 216, the first knob 210 is rotated relative to either the decorative element 100 or the second knob 220.

[0118] This embodiment provides a knob device 10. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features, such as... Figure 3 As shown, along the axial direction of the rotating shaft 212, the height of the second knob 220 is t1, and the distance between the opposite ends of the decorative piece 100 and the second knob 220 is t2; where t1 / t2≥0.2.

[0119] In this embodiment, the mating structure of the decorative element 100 and the knob structure 200 is defined.

[0120] Along the axial direction of the rotating shaft 212, the height of the second knob 220 is t1.

[0121] Along the axial direction of the rotating shaft 212, the distance between the opposite ends of the decorative element 100 and the second knob 220 is t2. That is, along the axial direction of the rotating shaft 212, the end face of the decorative element 100 opposite to the second knob 220 is denoted as the first end face, and the end face of the second knob 220 opposite to the decorative element 100 is denoted as the second end face, and the distance between the first end face and the second end face is t2.

[0122] Wherein, t1 / t2≥0.2, this setting limits the ratio of the height of the second knob 220 to the overall height of the knob device 10 along the axial direction of the rotating shaft 212, so as to ensure the volume of the second knob 220, ensure the protection area of ​​the knob device 10, reduce the probability of the knob device 10 being accidentally touched, and provide structural support for ensuring the safety and reliability of product use.

[0123] This embodiment provides a knob device 10. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features, such as... Figure 3 and Figure 4 As shown, the first knob 210 also includes a marking section 218.

[0124] The marking part 218 is located on the outer periphery of the knob body 216.

[0125] In this embodiment, the structure of the knob body 216 is further defined. The first knob 210 also includes an indicator 218. The indicator 218 is located on the outer periphery of the knob body 216. The indicator 218 has the function of indicating the rotation position of the knob body 216, so that the user can confirm the rotation angle of the first knob 210 according to the indicator 218 and clearly understand the current usage status of the stove 920.

[0126] For example, the identification part 218 includes at least one of numbers, words, and symbols.

[0127] For example, the marking part 218 is detachably connected to the knob body 216.

[0128] For example, the marking part 218 is integrally formed with the knob body 216.

[0129] This embodiment provides a knob device 10. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features, such as... Figure 5 and Figure 6 As shown, the drive unit 214 is movably connected to the second knob 220, and the drive unit 214 can switch between a first position and a second position relative to the second knob 220.

[0130] When an external force is applied to the drive unit 214, the drive unit 214 is in the first position, and the drive unit 214 is connected to the knob body 216 and the second knob 220.

[0131] When the external force applied to the drive unit 214 is removed, the drive unit 214 returns to the second position, located on one side of the first knob 210.

[0132] In this embodiment, the engagement structure of the drive unit 214 and the second knob 220 is defined based on the fact that the first knob 210 can drive the second knob 220 to rotate relative to the decorative member 100.

[0133] The drive unit 214 is movably connected to the second knob 220, and the drive unit 214 can switch between a first position and a second position relative to the second knob 220. For example, when an external force is applied to the drive unit 214 (that is, when the drive unit 214 is triggered), the drive unit 214 will move to the first position. For example, when the external force applied to the drive unit 214 is removed (that is, when the triggering of the drive unit 214 is released), the drive unit 214 will return to the second position.

[0134] Specifically, when the drive unit 214 is triggered, the drive unit 214 is in the first position, and the drive unit 214 is connected to the knob body 216 and the second knob 220. That is, when the drive unit 214 is in the first position, the knob body 216 and the second knob 220 are connected as a whole through the drive unit 214, so that the first knob 210 can drive the second knob 220 to rotate relative to the decorative piece 100.

[0135] Specifically, when the trigger on the drive unit 214 is released, the drive unit 214 is reset to the second position, and the drive unit 214 is located on one side of the first knob 210. At this time, the drive unit 214 and the first knob 210 are in a separated state, and the drive unit 214 and the first knob 210 are not connected. The first knob 210 cannot drive the second knob 220 to rotate relative to the decorative piece 100.

[0136] This embodiment provides a knob device 10. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features, such as... Figure 3 and Figure 5 As shown, the knob body 216 is located inside the second knob 220, and the side of the second knob 220 is provided with a through hole 222.

[0137] The drive unit 214 is connected to the through hole 222.

[0138] The knob device 10 also includes a first elastic element 300.

[0139] The first elastic element 300 is located inside the through hole 222.

[0140] The first elastic element 300 is fitted onto the drive unit 214.

[0141] The first elastic element 300 is used to drive the drive unit 214 to reset when the external force acting on the drive unit 214 is removed.

[0142] In this embodiment, the structure of the knob device 10 is further defined. The knob body 216 is located inside the second knob 220. The side of the second knob 220 is provided with a through hole 222, and the driving part 214 passes through the through hole 222.

[0143] The knob device 10 also includes a first elastic element 300, which is located within the through hole 222 and sleeved on the drive part 214. When the external force applied to the drive part 214 is removed, the first elastic element 300 drives the drive part 214 to return to the second position. That is, when the user presses the drive part 214, the drive part 214 moves along the through hole 222 toward the knob body 216 and connects with the knob body 216. At this time, the knob body 216 and the second knob 220 are connected as a whole through the drive part 214. When the user's hand is removed from the drive part 214, that is, when the external force applied to the drive part 214 is removed, the drive part 214 returns to the second position under the action of the first elastic element 300. This design allows the drive unit 214 to automatically reset under the action of the first elastic element 300 after the user removes their hand. This prevents the pet from accidentally touching the knob device 10 and starting the stove 920 because the user forgets to manually reset the drive unit 214, thus further improving the safety and reliability of the product.

[0144] For example, the first elastic element 300 includes a spring or tension spring, etc., which will not be listed here.

[0145] This embodiment provides a knob device 10. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features, such as... Figure 5 As shown, the through hole 222 includes a first connecting segment 2222 and a second connecting segment 2224 connected together.

[0146] The second connecting segment 2224 is located between the first connecting segment 2222 and the knob body 216.

[0147] The cross-sectional area of ​​the first connected segment 2222 is greater than that of the second connected segment 2224.

[0148] The drive unit 214 includes a drive body 2142 and a baffle 2144 connected to each other.

[0149] The drive body 2142 is inserted through the through hole 222.

[0150] Baffle 2144 is located at the first connecting segment 2222.

[0151] The first elastic element 300 is fitted onto the drive body 2142.

[0152] The first elastic element 300 abuts against the connection between the first connecting segment 2222 and the second connecting segment 2224 and the baffle 2144.

[0153] In this embodiment, the mating structure of the through hole 222, the driving part 214, and the first elastic member 300 is refined.

[0154] The through-hole 222 includes a first connecting segment 2222 and a second connecting segment 2224, which are connected. The second connecting segment 2224 is located between the first connecting segment 2222 and the knob body 216. The flow cross-sectional area of ​​the first connecting segment 2222 is larger than that of the second connecting segment 2224, that is, the flow cross-sectional areas of the first connecting segment 2222 and the second connecting segment 2224 are not equal. A stepped surface is formed at the connection between the first connecting segment 2222 and the second connecting segment 2224. The stepped surface acts as a limiting first elastic element 300.

[0155] The drive unit 214 includes a drive body 2142 and a baffle 2144. The drive body 2142 is connected to the baffle 2144. The drive body 2142 passes through the through hole 222, and the baffle 2144 is located at the first connecting section 2222. A first elastic member 300 is sleeved on the drive body 2142 and abuts against the connection between the first connecting section 2222 and the second connecting section 2224 and the baffle 2144.

[0156] When an external force is applied to the drive unit 214, the distance between the connection point of the first connecting segment 2222 and the second connecting segment 2224 and the baffle 2144 decreases accordingly. The first elastic element 300 is in a compressed state, and the drive body 2142 extends out of the second knob 220 and connects with the knob body 216, so that the knob body 216 and the second knob 220 are connected as a whole through the drive unit 214.

[0157] When the external force applied to the drive unit 214 is removed, the distance between the connection point of the first connecting segment 2222 and the second connecting segment 2224 and the baffle 2144 increases accordingly. The first elastic element 300 returns to its original shape, and the first elastic element 300 drives the drive unit 214 to reset to the second position, so that the drive unit 214 is separated from the knob body 216.

[0158] It is understandable that when the first connecting segment 2222 is cross-sectioned along a direction perpendicular to the first connecting segment 2222 to the second connecting segment 2224, the area enclosed by the inner contour line of the first connecting segment 2222 is the flow cross-sectional area of ​​the first connecting segment 2222.

[0159] It is understandable that when the second connected segment 2224 is cross-sectioned along a direction perpendicular to the first connected segment 2222 to the second connected segment 2224, the area enclosed by the inner contour line of the second connected segment 2224 in the cross-section is the flow cross-sectional area of ​​the second connected segment 2224.

[0160] This embodiment provides a knob device 10. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features, such as... Figure 3 and Figure 5 As shown, the second end of the first knob 210 and one of the second knobs 220 are provided with a protrusion 400, and the other is provided with a connecting groove 500.

[0161] The knob device 10 also includes a bearing 600.

[0162] The inner peripheral wall of bearing 600 is connected to the protrusion 400.

[0163] The outer peripheral wall of bearing 600 is connected to the side wall of connecting groove 500.

[0164] In this embodiment, the mating structure of the first knob 210 and the second knob 220 is defined.

[0165] The second end of the first knob 210 and one of the second knobs 220 have a protrusion 400, and the other has a connecting groove 500. That is, the second end of the first knob 210 has a protrusion 400, and the second knob 220 has a connecting groove 500. Alternatively, the second end of the first knob 210 has a connecting groove 500, and the second knob 220 has a protrusion 400.

[0166] The knob device 10 also includes a bearing 600, the inner peripheral wall of the bearing 600 is connected to a protrusion 400, and the outer peripheral wall of the bearing 600 is connected to the groove sidewall of the connecting groove 500.

[0167] This configuration satisfies the requirement that the second knob 220 is mounted over the second end of the first knob 210, and that the second knob 220 is rotatably connected to the second end of the first knob 210. Simultaneously, the bearing 600 connects the first knob 210 and the second knob 220 as a single unit, allowing the knob structure 200 to move along the axial direction of the rotating shaft 212 relative to the decorative piece 100. This satisfies the requirement of triggering the knob device 10 by pressing and rotating to start the stove 920.

[0168] This embodiment provides a knob device 10. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features, such as... Figure 7 As shown, the second end of the first knob 210 and one of the second knobs 220 are provided with a groove 700, and the other is provided with a slider 800.

[0169] The slider 800 is slidably connected to the slide groove 700, and the slide groove 700 can limit the slider 800 along the axial direction of the rotating shaft 212.

[0170] In this embodiment, the mating structure of the first knob 210 and the second knob 220 is defined.

[0171] The second end of the first knob 210 and one of the second knobs 220 are provided with a groove 700, and the other is provided with a slider 800. That is, the second end of the first knob 210 is provided with a groove 700, and the second knob 220 is provided with a slider 800. Alternatively, the second end of the first knob 210 is provided with a slider 800, and the second knob 220 is provided with a groove 700.

[0172] The slider 800 is located within the slide groove 700 and can slide along the slide groove 700. The slide groove 700 can limit the slider 800 along the axial direction of the rotating shaft 212, that is, the slider 800 will not disengage from the slide groove 700 along the axial direction of the rotating shaft 212. The slider 800 and the slide groove 700 cooperate to assemble the first knob 210 and the second knob 220 into a whole. The knob structure 200 can move as a whole relative to the decorative part 100 along the axial direction of the rotating shaft 212, and can also meet the need to activate the knob device 10 by pressing and rotating to start the stove 920.

[0173] This embodiment provides a knob device 10. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features, such as... Figure 2 , Figure 3 and Figure 5 As shown, the rotating shaft 212 has a slot 2122 on the side opposite to the second knob 220.

[0174] In this embodiment, the structure of the rotating shaft 212 is further defined such that a slot 2122 is provided on the side of the rotating shaft 212 away from the second knob 220, and the slot 2122 is used to cooperate with the bracket 912 of the circuit board assembly 910.

[0175] Specifically, when the knob structure 200 moves along the axis of the shaft 212 toward the appliance body 900, the bracket 912 of the circuit board assembly 910 inserts into the slot 2122. At this time, rotating the second knob 220 can move the bracket 912 to turn on the stove 920. When the knob structure 200 moves away from the appliance body 900 along the axis of the shaft 212, the slot 2122 of the shaft 212 separates from the bracket 912 of the circuit board assembly 910. At this time, even if the second knob 220 is rotated, it cannot move the bracket 912, and the stove 920 cannot be turned on.

[0176] This embodiment provides a knob device 10. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features, such as... Figure 3 and Figure 5 As shown, the decorative element 100 has a rim 114 located around the knob structure 200.

[0177] In this embodiment, the structure of the decorative element 100 is further defined. The decorative element 100 has a surrounding edge 114, which is located around the knob structure 200. The surrounding edge 114 serves to block the connection between the knob structure 200 and the decorative element 100, ensuring the aesthetic appearance of the knob device 10 after assembly with the electrical body 900. Simultaneously, the surrounding edge 114 also serves to block moisture and dirt from the external environment, preventing moisture and dirt from entering the knob structure 200, thus providing structural support for ensuring the service life and performance of the knob device 10.

[0178] like Figure 1 As shown, a household appliance 90 according to some embodiments of this application includes: a knob device 10 as described in any of the above embodiments.

[0179] The household appliance 90 provided in this application includes a knob device 10 as described in any of the above embodiments, and therefore has all the beneficial effects of the knob device 10, which will not be described in detail here.

[0180] This embodiment provides a household appliance 90. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features, such as... Figure 1 As shown, the household appliance 90 also includes the appliance body 900.

[0181] The appliance body 900 includes a circuit board assembly 910, a cooktop 920, and a second elastic element 930.

[0182] The circuit board assembly 910 is electrically connected to the stove 920.

[0183] The circuit board assembly 910 includes a bracket 912.

[0184] The decorative part 100 is connected to the outer surface of the electrical body 900.

[0185] The rotating shaft 212 is connected to the electrical body 900.

[0186] The second elastic element 930 is used to drive the knob structure 200 to reset along the axial direction of the rotating shaft 212.

[0187] When the knob structure 200 moves toward the electrical body 900 along the axis of the rotating shaft 212, a portion of the bracket 912 is inserted into the slot 2122 of the rotating shaft 212.

[0188] The circuit board assembly 910 is used to control the operation of the stove 920 when the first knob 210 moves the bracket 912.

[0189] In this embodiment, the structure of the household appliance 90 is further defined.

[0190] The household appliance 90 also includes the appliance body 900. The appliance body 900 includes a circuit board assembly 910, a cooktop 920, and a second elastic element 930.

[0191] The circuit board assembly 910 is electrically connected to the cooktop 920 and can control the operation of the cooktop 920. The circuit board assembly 910 includes a bracket 912. The rotating shaft 212 of the second knob 220 is used to cooperate with the bracket 912. When the knob structure 200 moves along the axial direction of the rotating shaft 212 toward the appliance body 900, a part of the bracket 912 is inserted into the slot 2122 of the rotating shaft 212, and the second elastic member 930 is in a compressed state. The rotation of the rotating shaft 212 of the first knob 210 can drive the bracket 912 to move, and the circuit board assembly 910 controls the operation of the cooktop 920 accordingly.

[0192] After the external force acting on the knob structure 200 is removed, the second elastic element 930 returns to its original shape. The second elastic element 930 drives the knob structure 200 to reset along the axial direction of the rotating shaft 212, so that the rotating shaft 212 is separated from the support 912 of the circuit board assembly 910.

[0193] For example, the second elastic element 930 includes springs and tension springs, etc., which will not be listed here.

[0194] This embodiment provides a household appliance 90. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features, such as... Figure 1 As shown, the appliance body 900 has a cooking cavity 940 inside.

[0195] The cooking chamber 940 is located on one side of the stove 920.

[0196] The appliance body 900 also includes a cooking mechanism 950.

[0197] The cooking structure 950 is connected to the cooking cavity 940.

[0198] The cooking structure 950 includes at least one or a combination of the following: a microwave generator, a heating element, and a steam generator.

[0199] In this embodiment, the structure of the household appliance 90 is further defined.

[0200] The appliance body 900 has a cooking cavity 940 located on one side of the stove 920. Food can be placed in the cooking cavity 940 and cooked by the cooking structure 950.

[0201] The cooking structure 950 is in communication with the cooking cavity 940. Exemplarily, the cooking structure 950 includes at least one or a combination of the following: a microwave generator, a heating element, and a steam generator.

[0202] When the cooking structure 950 includes a microwave generator, the household appliance 90 is a stove and microwave combo.

[0203] When the cooking structure 950 includes a heating element, the household appliance 90 is a combination cooktop and oven.

[0204] When the cooking structure 950 includes a steam generator, the household appliance 90 is a combination cooktop and steam oven.

[0205] Exemplarily, this application reasonably designs the structure of the knob device 10, which has the function of preventing accidental activation. The knob device 10 of this application includes a decorative part 100 and a knob structure 200, and the knob structure 200 includes a first knob 210 and a second knob 220. The first knob 210 and the second knob 220 are two independent devices. The first knob 210 and the second knob 220 adopt a low-friction connection method, thereby preventing the stove 920 from being accidentally activated. For example, low friction means that the first knob 210 and the second knob 220 are rotatably connected by a bearing 600. For example, low friction means that the first knob 210 and the second knob 220 are rotatably connected by a slide groove 700 and a slider 800.

[0206] The knob device 10 is triggered by pressing and rotating to drive the encoder on the circuit board assembly 910, thereby starting the stove 920.

[0207] like Figure 4 and Figure 6 As shown, the knob device 10 includes a first knob 210, a second knob 220, a bearing 600, and a decorative element 100.

[0208] The external knob structure 200 is divided into two independent parts: a first knob 210 and a second knob 220. The first knob 210 and the second knob 220 are connected by low friction, for example, they are rotatably connected by a bearing 600. The second knob 220 can rotate independently of the first knob 210. The first knob 210 is detachably equipped with a rotating shaft 212, for example, the rotating shaft 212 is installed and fixed by a snap-fit ​​mechanism. Alternatively, the first knob 210 may have the rotating shaft 212 integrally formed. Considering the touch method and range of pets, when a pet touches and presses and rotates the second knob 220, since the second knob 220 rotates independently of the first knob 210, that is, when the second knob 220 is rotated, the first knob 210 will not rotate under the influence of the second knob 220. Therefore, the stove 920 will not be activated. When a pet touches the first knob 210, due to the characteristics of its paws, the pet cannot mimic a human by pinching the outer wall of the first knob 210 with two fingers, thus preventing it from pressing the knob and operating the stove 920. Along the axial direction of the rotating shaft 212, the height of the second knob 220 is t1, and the distance between the opposite ends of the decorative piece 100 and the second knob 220 is t2; where t1 / t2 ≥ 0.2. This design increases the area of ​​the knob device 10 that prevents accidental activation, improving the safety and reliability of the product.

[0209] For example, such as Figure 5 and Figure 6 As shown, the knob device 10 includes a knob structure 200 and a decorative element 100. The knob structure 200 includes a first knob 210 and a second knob 220. The first knob 210 and the second knob 220 are connected by low friction, for example, the first knob 210 and the second knob 220 are rotatably connected by a bearing 600. The second knob 220 can rotate independently of the first knob 210. Considering the touch method and range of pets, when a pet touches the second knob 220 and presses and rotates it, since the second knob 220 rotates independently of the first knob 210, that is, when the second knob 220 is rotated, the first knob 210 will not rotate under the action of the second knob 220. Therefore, the stove 920 will not be started. When operating the knob device 10 normally, it is necessary to press the button (i.e., the drive unit 214) on the side of the first knob 210 to engage the second knob 220 with the first knob 210, thereby assembling the first knob 210 and the second knob 220 into a whole. Only by performing a two-step operation of pressing and rotating can the stove 920 be started. For example, the second knob 220 covers the first knob 210, which can reduce the probability of the knob device 10 being accidentally activated.

[0210] In this application, the term "multiple" refers to two or more unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0211] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The above descriptions are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A knob device, characterized in that, include: Decorative component, wherein the decorative component is provided with mounting holes; The knob structure includes: A first knob, the first end of the first knob has a rotating shaft, the rotating shaft passes through the mounting hole, the rotating shaft and the mounting hole are clearance-fitted, the first knob also has a driving part, the knob structure can move relative to the decorative part along the axial direction of the rotating shaft; A second knob is provided over the second end of the first knob, and the second knob is rotatably connected to the second end of the first knob; When the drive unit is triggered, the first knob can rotate relative to either the decorative element or the second knob, or the first knob can drive the second knob to rotate relative to the decorative element.

2. The knob device according to claim 1, characterized in that, The second knob is exposed outside the drive unit.

3. The knob device according to claim 2, characterized in that, The first knob includes: A knob body, wherein the knob body is connected between the second end of the first knob and the rotating shaft; The driving unit is located on the knob body; or When the drive unit is triggered, the drive unit connects the knob body and the second knob.

4. The knob device according to claim 3, characterized in that, Along the axial direction of the rotating shaft, the knob body is located between the second knob and the decorative piece, and the driving part is located on the outer periphery of the knob body.

5. The knob device according to claim 4, characterized in that, Along the axial direction of the rotating shaft, the height of the second knob is t1, and the distance between the end faces of the decorative piece and the second knob facing away from each other is t2. Where t1 / t2≥0.

2.

6. The knob device according to claim 4, characterized in that, The first knob also includes: The marking part is located on the outer periphery of the knob body.

7. The knob device according to claim 3, characterized in that, The drive unit is movably connected to the second knob, and the drive unit can switch between a first position and a second position relative to the second knob. When an external force is applied to the drive unit, the drive unit is located in the first position, and the drive unit is connected to the knob body and the second knob; When the external force applied to the drive unit is removed, the drive unit returns to the second position, and the drive unit is located on one side of the first knob.

8. The knob device according to claim 7, characterized in that, The knob body is located inside the second knob, and the side of the second knob is provided with a through hole, through which the driving part passes. The knob device further includes a first elastic element located inside the through hole and sleeved on the driving part. The first elastic element is used to drive the driving part to reset when the external force acting on the driving part is removed.

9. The knob device according to claim 8, characterized in that, The through hole includes a first connecting section and a second connecting section connected together. The second connecting section is located between the first connecting section and the knob body. The flow cross-sectional area of ​​the first connecting section is larger than the flow cross-sectional area of ​​the second connecting section. The driving unit includes a driving body and a baffle connected to each other. The driving body passes through the through hole, the baffle is located at the first connecting section, the first elastic member is sleeved on the driving body, and the first elastic member abuts against the connection between the first connecting section and the second connecting section and the baffle.

10. The knob device according to any one of claims 1 to 9, characterized in that, The second end of the first knob and one of the second knobs are provided with a protrusion, and the other is provided with a connecting groove; The knob device also includes a bearing, the inner peripheral wall of which is connected to the protrusion, and the outer peripheral wall of which is connected to the side wall of the connecting groove.

11. The knob device according to any one of claims 1 to 9, characterized in that, The second end of the first knob and one of the second knobs are provided with a groove, and the other is provided with a slider. The slider is slidably connected to the groove, and the groove can limit the slider along the axial direction of the rotating shaft.

12. The knob device according to any one of claims 1 to 9, characterized in that, The rotating shaft has a slot on the side opposite to the second knob.

13. The knob device according to any one of claims 1 to 9, characterized in that, The decorative element has a rim that is located around the periphery of the knob structure.

14. A household appliance, characterized in that, include: The knob device as described in any one of claims 1 to 13.

15. The household appliance according to claim 14, characterized in that, Also includes: The appliance body includes a circuit board assembly, a stove, and a second elastic element. The circuit board assembly is electrically connected to the stove and includes a bracket. The decorative element is connected to the outer surface of the electrical appliance body, the rotating shaft passes through the electrical appliance body, and the second elastic element is used to drive the knob structure to reset along the axial direction of the rotating shaft; When the knob structure moves toward the electrical appliance body along the axial direction of the rotating shaft, a portion of the bracket is inserted into the slot of the rotating shaft; The circuit board assembly is used to control the operation of the stove when the first knob moves the bracket.

16. The household appliance according to claim 15, characterized in that, The appliance body has a cooking cavity, which is located on one side of the stove. The appliance body is also provided with a cooking structure, which is connected to the cooking cavity; The cooking structure includes at least one or a combination of the following: a microwave generator, a heating element, and a steam generator.

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