Composite knob structure and stove

Abstract

The composite rotary knob structure comprises a first rotary knob and a second rotary knob which are independently installed, the second rotary knob is fixedly connected with the surface of the stove, and the first rotary knob is connected with a valve rod of the stove; the first knob comprises a display screen for displaying information and a printed circuit board assembly electrically connected with the display screen, the printed circuit board assembly is electrically connected with the second knob, the second knob comprises a fixed part and a rotating part for adjusting interaction information, and the rotating part is rotationally arranged on the outer surface of the fixed part. According to the technical scheme, the double-layer knob structure is arranged, the first knob on the upper layer is used for controlling the valve rod to achieve firepower adjustment, the encoder on the lower layer is used for design, the rotating process of the rotating part for rotating the second knob has the hand feeling of the encoder, and the perception degree of a user to the rotating angle is improved; the accuracy of controlling the interaction function by rotating the knob is improved, and the use experience of the interaction knob is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stoves, in particular to a composite knob structure and a stove. Background Art

[0002] When rotating the interactive knob of the gas stove, it is easy to not turn it into position or turn it too far when setting the function options on the knob display panel. The feel of setting it into position is not obvious, and it is necessary to adjust it back and forth repeatedly to adjust it to a specific position, or you need to get closer to see it. Being too close to the fire source can easily cause danger and is not conducive to use, which affects the convenience of using the interactive knob.

[0003] Therefore, there is an urgent need for an interactive knob with a hand feel that can be used to judge the rotation angle position. Utility Model Content

[0004] The present application aims to solve the technical problem that the adjustment feel of the interactive knob is poor and it is not conducive to proper adjustment. To solve this technical problem, the technical solution provided by the present application is as follows:

[0005] On the one hand, the present application provides a composite knob structure, which is applied to a stove, and the composite knob structure includes a first knob and a second knob which are independently installed, the second knob is fixedly connected to a stove panel of the stove, and the first knob is connected to a valve stem of the stove;

[0006] The first knob includes a display screen for displaying information and a printed circuit board assembly electrically connected to the display screen, the printed circuit board assembly is electrically connected to the second knob, the second knob includes a fixed part and a rotating part for adjusting the interactive information, the rotating part is rotatably arranged on the outer surface of the fixed part.

[0007] In some possible implementations, a metal strip for powering on and transmitting signals is disposed on a surface of the first knob close to the cooker, and the metal strip is electrically connected to the printed circuit board assembly.

[0008] In some possible implementations, a preset number of elastic contacts for contacting and electrifying the metal strip are provided on a surface of the second knob away from the cooker panel, and the movable stroke of the elastic contacts is greater than or equal to the movable stroke of the valve stem.

[0009] In some possible implementations, the composite knob structure further includes a potentiometer indicating a position of a first knob, and there is a linear relationship between a rotation angle of the first knob and a voltage.

[0010] In some possible implementations, the potentiometer includes a rotating part and a fixed end, the rotating part and the fixed end are rotatably connected, the fixed end is fixedly connected to the valve body of the cooker, and the rotating part is provided with a through hole allowing the valve stem to pass through and is fixedly connected to the valve stem.

[0011] In some possible implementations, a first wire is disposed on a surface of the second knob close to the cooker panel.

[0012] In some possible implementations, a second wire for transmitting a potential signal is disposed on the potentiometer, and the first wire is connected to the second wire.

[0013] In some possible implementations, a structure for accommodating a valve stem of the stove is provided on a surface of the first knob close to the stove panel.

[0014] In some possible implementations, the structure is a semi-enclosed hole, which is closed at one end close to the display screen and open at one end away from the display screen, and the shape of the semi-enclosed hole matches the shape of the valve stem.

[0015] On the other hand, the present application further provides a stove, which includes the composite knob structure, and the stove is provided with a water retaining structure, and the second knob is fixedly connected to the stove panel through the water retaining structure.

[0016] The above technical solution provided by this application has the following beneficial effects:

[0017] The embodiment of the utility model sets up a double-layer knob structure, uses the first knob on the upper layer to control the valve stem, adjusts the firepower by rotating the knob, and uses the second knob on the lower layer to realize the interactive function. By using the encoder design, when setting the interactive function, the rotating part of the second knob is rotated, and the rotation process has the feel of the encoder, which improves the user's perception of the rotation angle, thereby improving the accuracy of the user's control over the interactive function by rotating the knob, and improving the user experience of the interactive knob. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of an assembly structure of a composite knob structure and a cooker provided in an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of a top view of a composite knob structure provided by an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the bottom structure of a composite knob structure provided by an embodiment of the utility model;

[0022] Figure 4 A schematic structural diagram of a fixing portion of a second knob of a composite knob structure provided by an embodiment of the utility model;

[0023] Figure 5 A schematic diagram of the positional relationship between a potentiometer with a composite knob structure and a gas valve body provided in an embodiment of the utility model;

[0024] The following is a supplementary description of the attached drawings:

[0025] 1-first knob; 11-display screen; 12-printed circuit board assembly; 13-metal strip; 131-second wire; 14-support structure; 15-display screen cover; 16-housing; 17-semi-enclosed hole; 18-connecting wire; 2-second knob; 21-fixed part; 22-rotating part; 211-elastic contact;

[0026] 3-potentiometer; 31-first wire;

[0027] 4-valve stem;

[0028] 5-valve body;

[0029] 6-Water retaining structure;

[0030] 7- Cooker panel. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] The term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present application. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may include one or more of the features explicitly or implicitly. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0033] When a numerical range is disclosed herein, the above range is deemed to be continuous and includes the minimum and maximum values ​​of the range, as well as each value between such minimum and maximum values. Further, when a range refers to an integer, each integer between the minimum and maximum values ​​of the range is included. In addition, when multiple ranges are provided to describe features or characteristics, the ranges can be merged. In other words, unless otherwise indicated, all ranges disclosed herein should be understood to include any and all sub-ranges included therein. For example, a specified range from "1 to 10" should be deemed to include any and all sub-ranges between a minimum of 1 and a maximum of 10. Exemplary sub-ranges of ranges 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, etc.

[0034] Figure 1 The schematic diagram of the structure of the composite knob structure provided in this embodiment is shown as follows: Figure 1 As shown, the composite knob structure includes a double-layer nested first knob 1 and a second knob 2, the first knob 1 and the second knob 2 are installed independently, the first knob 1 includes a display screen 11, a printed circuit board assembly 12, a supporting structure 14, and an annular metal strip 13; a display screen cover 15, and a housing 16, wherein a semi-enclosed structure is provided on the bottom surface of the first knob 1; the display screen 11 and the printed circuit board are connected by a connecting wire 18, and the printed circuit board is connected to the annular metal strip 13 by the connecting wire 18; the back of the elastic contact 211 is connected to the main control board for power supply and communication by a second wire 131.

[0035] Please continue to see Figure 1The present application provides a composite knob structure, which is applied to a stove, and is characterized in that the composite knob structure comprises a first knob 1 and a second knob 2 which are independently installed, the second knob 2 is fixedly connected to a stove panel 7 of the stove, and the first knob 1 is connected to a valve stem 4 of the stove;

[0036] The composite knob structure includes a semi-closed structure arranged on the bottom surface of the first knob 1, and the first knob 1 is connected to the valve stem 4 through the semi-closed structure. There is a preset distance between the closed part of the semi-closed structure and the top of the valve stem 4. The preset distance represents the active stroke of the valve stem 4, that is, the distance the valve stem 4 moves when the first button is pressed to drive the valve stem 4 to move downward.

[0037] The first knob 1 includes a display screen 11 for displaying information and a printed circuit board assembly 12 electrically connected to the display screen 11. The printed circuit board assembly 12 is electrically connected to the second knob 2. The second knob 2 includes a fixed part 21 and a rotating part 22 for adjusting interactive information. The rotating part 22 is rotatably arranged on the outer surface of the fixed part 21.

[0038] The bottom surface of the first knob 1 is also provided with an annular metal strip 13. The second knob 2 adopts an encoder structure design, including a fixed part 21 and a rotating part 22. The fixed part 21 is fixed to the stove panel 7. A water retaining structure 6 is also provided between the fixed part 21 and the stove panel 7. The rotating part 22 can rotate independently.

[0039] See also Figure 2 Furthermore, the display screen 11 can be set as a display screen 11 that only has a display function and does not have a touch screen input function, or can be set as a display screen 11 that has both a display function and a touch screen input function. Accordingly, a touch area and a non-touch area can be set on the surface of the display screen 11. The non-touch area is used to display information, and the touch area is used to receive instructions and interact with the gas stove. The present application does not limit the area ratio of the display screen 11 on the first knob 1. For example, the area ratio of the display screen 11 to the top of the first knob 1 can be 1:1 or 1:2. The area of ​​the display screen 11 can only occupy a part of the top surface of the first knob 1, such as the display screen 11 occupies half of the top of the first knob 1, or the entire surface of the top of the first knob 1 can be set as the display screen 11. Similarly, the area ratio of the touch area and the non-touch area can also be adjusted according to needs, which will not be repeated here.

[0040] Furthermore, the display screen 11 is connected to the printed circuit board assembly 12 via a cable. Exemplarily, the printed circuit board assembly 12 is fixed to the supporting structure 14 by screws or snaps.

[0041] The display screen 11 is bonded to a transparent or translucent display screen cover 15. In some embodiments, optionally, the bonding material may be OCA glue. Exemplarily, the cover material is a transparent substrate with a certain strength. Optionally, the cover material may be glass, acrylic, etc. The valve stem 4 passes through the potentiometer 3 and is fixedly connected to the semi-enclosed hole 17 on the first knob 1.

[0042] Further, regarding the waterproof setting, the display screen cover 15 and the supporting structure 14 are fixed by gluing, which can effectively prevent water; the printed circuit board assembly 12 can be waterproofed, illustratively, three-proof glue, paint, or glue can be applied.

[0043] The embodiment of the utility model sets up a double-layer knob structure, uses the first knob on the upper layer to control the valve stem, adjusts the firepower by rotating the knob, and uses the second knob on the lower layer to realize the interactive function. By using the encoder design, when setting the interactive function, the rotating part of the second knob is rotated, and the rotation process has the feel of the encoder, which improves the user's perception of the rotation angle, thereby improving the accuracy of the user's control over the interactive function by rotating the knob, and improving the user experience of the interactive knob.

[0044] See also Figure 3 ,like Figure 3 As shown, in some possible embodiments, a metal strip 13 for powering on and transmitting signals is disposed on the surface of the first knob 1 close to the cooker, and the metal strip 13 is electrically connected to the printed circuit board assembly 12 .

[0045] Optionally, a ring-shaped metal strip 13 is provided on the surface of the first knob 1 close to the stove. Further, the metal strip 13 is subjected to anti-corrosion treatment, and a coating can be added to the surface of the metal strip 13 to prevent corrosion. Considering the oily and humid environment of the kitchen, preferably, an immersion gold process is used, and the coating material can be selected from gold-plated or silver-plated nickel, tin-plated, carbon and other materials to meet the use in salt spray and humid oily environments. Further, the inner side of the metal strip 13 is connected to a wire, and is electrically connected to the printed circuit board assembly 12 through the wire. In addition, a screw hole 8 is also provided at the lower part of the first knob 1 to connect the housing 17 and the supporting structure 15.

[0046] The embodiment of the utility model sets a metal strip, and when the first knob is pressed to move downward and contact the elastic contact, it can be powered on, and the printed circuit board assembly can be powered and signals can be transmitted, so that ignition and signal transmission can be achieved, which enriches the diversity of the knob functions and provides a prerequisite for the knob to display interactive information and perform interactive settings.

[0047] See also Figure 4 ,like Figure 4As shown, in some possible embodiments, a preset number of elastic contacts 211 for contacting and electrifying the metal strip 13 are provided on the surface of the second knob 2 away from the cooker panel 7, and the movable stroke of the elastic contact 211 is greater than or equal to the movable stroke of the valve stem 4.

[0048] It should be noted that ignition requires opening the gas valve to let in gas, and at the same time, electricity needs to be turned on to generate electric sparks, which ignite the gas to achieve ignition. This means that the first knob 1 must be pressed and rotated at the same time to ignite. Ignition cannot be achieved by just pressing without rotating or just rotating without pressing.

[0049] In order to achieve power supply, this embodiment adopts the method of elastic contact power supply. A spring is arranged on the elastic contact 211. When the first knob 1 is pressed to move downward, the valve stem 4 moves downward at the same time. The metal strip 13 contacts the spring so that the spring is gradually compressed until the metal strip 13 contacts the elastic contact 211 to achieve power supply.

[0050] Furthermore, the movable stroke of the elastic contact 211 is greater than or equal to the movable stroke of the valve stem 4 , and the movable stroke of the elastic contact 211 refers to the distance that the spring on the elastic contact 211 moves when being compressed.

[0051] The embodiment of the utility model arranges a preset number of elastic contacts on the second knob, so that when the first knob is pressed, the metal strip of the first knob can contact the elastic contacts to realize power supply, thereby ensuring the realization of the ignition function.

[0052] See also Figure 3 , Figure 4 , Figure 5 As shown in the figure, in some possible embodiments, the composite knob structure further includes a potentiometer 3 indicating the position of the first knob 1, and there is a linear relationship between the rotation angle of the first knob 1 and the voltage.

[0053] Optionally, the device for indicating the position of the first knob 1 may also be an absolute encoder. Optionally, the position indicator may be an absolute encoder or a potentiometer 3. For example, Figure 4 As shown, the potentiometer 3 is provided with three pins, the resistance values ​​at both ends of the potentiometer 3 are fixed, and the resistance value of the middle pin to any end pin is variable. The relationship between the rotation angle of the potentiometer 3 and the voltage of the potentiometer 3 includes a linear relationship, an exponential relationship, and a logarithmic relationship. In this embodiment, a potentiometer 3 with a linear relationship is adopted, so that the rotation angle of the first knob 1 can be regularly reflected by voltage changes, thereby realizing the control of the text display direction of the interactive information on the display screen 11.

[0054] The embodiment of the utility model sets a potentiometer in the composite knob structure so that the rotating part of the potentiometer and the valve stem are sleeved together. When the valve stem is driven to rotate by rotating the first knob, the rotating part of the potentiometer rotates synchronously with the valve stem. By setting the voltage of the potentiometer and the rotation angle of the first knob to be in a linear relationship, the rotation angle of the first knob can be judged according to the voltage of the potentiometer, that is, the position of the first knob can be judged, thereby sending a position signal to the printed circuit board assembly, so that the processing module therein adjusts the display direction of the interactive information text on the display screen according to the position signal, stabilizes the display direction of the interactive information in a direction suitable for reading, enhances the flexibility of the interactive information display and the interactivity of the knob, improves the stability of the direction of the knob displaying the interactive information text, and improves the convenience of the interactive function of the mechanical valve knob.

[0055] Please continue to see Figure 1 , Figure 5 In some possible embodiments, the potentiometer 3 includes a rotating part and a fixed end, the rotating part and the fixed end are rotatably connected, the fixed end is fixedly connected to the valve body 5 of the stove, and the rotating part is provided with a through hole allowing the valve stem 4 to pass through and is fixedly connected to the valve stem 4.

[0056] The potentiometer 3 includes a rotating part and a fixed end. Based on the principle of the potentiometer 3, the fixed end of the potentiometer 3 needs to be fixed on the stove valve body 5, and the rotating part is fixedly connected to the valve stem 4. When the first knob 1 is rotated, the first knob 1 drives the valve stem 4 to rotate, and then drives the rotating part of the potentiometer 3 to rotate, so that a relative displacement is generated between the rotating part and the fixed end, so that the rotation angle of the valve stem 4 is equal to the rotation angle of the first knob 1.

[0057] Furthermore, there is a linear relationship between the voltage of the potentiometer 3 and the rotation angle, so that the position signal represented by the voltage of the potentiometer 3 can accurately reflect the rotation angle of the main body, thereby determining the position of the knob.

[0058] The embodiment of the utility model sets the fixed part of the potentiometer on the gas valve body of the stove, rotates the rotating part to adjust the resistance of the potentiometer to generate different voltages, and fixes the valve stem and the rotating part so that the rotation angle of the main body can be transmitted to the rotating part through the valve stem. The potentiometer can reflect the position signal representing the main body according to the rotation angle, and transmits the position signal to the printed circuit board assembly, thereby providing a reliable basis for adjusting the direction of displayed text on the display screen. Based on this, the display direction of the text on the display screen can be adjusted in time with the change of the knob angle, so that the text can always be displayed in a direction that conforms to reading habits, thereby improving the intelligence of the knob structure, enhancing the interactivity of the knob structure, improving the user experience, and improving the convenience of reading the text on the display screen.

[0059] Please continue to see Figure 1 ,like Figure 1As shown, in some possible embodiments, a first wire 31 is provided on the surface of the second knob 2 close to the cooker panel 7 .

[0060] Furthermore, the first wire 31 is used to collect the signal sent by rotating the second knob 2 and transmit it through the connected wire. The connection between the second wire 131 and the first wire 31 can be made by air docking, which is convenient for connecting the power supply when assembling the encoder.

[0061] In some possible embodiments, a second wire 131 for transmitting a potential signal is disposed on the potentiometer 3 , and the first wire 31 is connected to the second wire 131 .

[0062] The embodiment of the utility model uses one wire as the total transmission wire, collects other signals on the one wire and then transmits them to the printed circuit board assembly, thereby simplifying the wiring design and saving costs.

[0063] Please continue to see Figure 1 ,like Figure 1 As shown, in some possible embodiments, a surface of the first knob 1 close to the stove panel 7 is provided with a structure for accommodating the valve stem 4 of the stove.

[0064] In some possible embodiments, the structure is a semi-enclosed hole 17, which is closed at one end close to the display screen 11 and open at one end away from the display screen 11, and the shape of the semi-enclosed hole 17 matches the shape of the valve stem 4.

[0065] As mentioned above, the first knob 1 and the valve stem 43 are fixedly connected, and the structure of the valve stem 4 that accommodates the stove matches the valve stem 4. The structure of the valve stem 4 that accommodates the stove is a semi-enclosed hole 17. The present application does not make any restrictive description on the shape of the semi-enclosed hole 17. By way of example, the cross-sectional shape of the semi-enclosed hole 17 can be a D-shaped hole, a square hole, a conical hole, etc. The cross-sectional shape of the semi-enclosed hole 17 matches the cross-sectional shape of the valve stem 4, so that the valve stem 4 can be stuck in the semi-enclosed hole 17. By rotating the first knob 1, the valve stem 4 can be driven to rotate together, thereby realizing the physical linkage between the first knob 1 and the valve stem 4, wherein the cross-section refers to a cross-section on any plane perpendicular to the central axis of the hole or the valve stem 4.

[0066] In the embodiment of the utility model, a semi-enclosed hole for accommodating the valve stem of the stove is provided on the surface of the first knob close to the stove panel, and the shape of the semi-enclosed hole matches the shape of the valve stem, and one end of the valve stem is fixedly clamped in the semi-enclosed hole, so that the first knob and the valve stem are detachably fixed to each other, and rotating the first knob drives the valve stem to rotate, thereby realizing the control of the fire power, maintaining the detachable feature of the mechanical valve stove, and improving the convenience of repair and maintenance of the stove.

[0067] Please continue to see Figure 1 ,like Figure 1 As shown, on the other hand, the present application also provides a stove with a composite knob structure, the stove includes the composite knob structure, the stove is provided with a water retaining structure 6, and the second knob 2 is fixedly connected to the stove panel 7 through the water retaining structure 6.

[0068] The embodiment of the utility model improves the waterproofness and safety of the knob structure by providing a water-retaining structure, avoids interference with the signal connection between the printed circuit board assembly and the power supply, potentiometer and other devices, reduces the possibility of failure of the interactive function of the knob structure, and further improves the stability of the interactive function of the knob structure.

[0069] The technical solution of the utility model has the following beneficial effects:

[0070] 1. The embodiment of the utility model sets up a double-layer knob structure, uses the first knob on the upper layer to control the valve stem, and adjusts the firepower by rotating the knob. The second knob on the lower layer is used to realize the interactive function. By using the encoder design, when setting the interactive function, the rotating part of the second knob is rotated. The rotation process has the feel of the encoder, which improves the user's perception of the rotation angle, thereby improving the accuracy of the user's control over the interactive function by rotating the knob, and improving the user experience of the interactive knob.

[0071] 2. The embodiment of the utility model sets a potentiometer in the composite knob structure so that the rotating part of the potentiometer and the valve stem are sleeved together. When the valve stem is driven to rotate by rotating the first knob, the rotating part of the potentiometer rotates synchronously with the valve stem. By setting the voltage of the potentiometer and the rotation angle of the first knob to be in a linear relationship, the rotation angle of the first knob can be judged according to the voltage of the potentiometer, that is, the position of the first knob can be judged, and the facing direction of the interactive information displayed on the display screen can be updated accordingly, so that the text direction of the display screen is adapted to the position of the first knob, thereby enhancing the flexibility of the interactive information display and the interactivity of the knob.

[0072] 3. The embodiment of the utility model sets a potentiometer in the composite knob structure so that the rotating part of the potentiometer and the valve stem are sleeved together. When the valve stem is driven to rotate by rotating the first knob, the rotating part of the potentiometer rotates synchronously with the valve stem. By setting the voltage of the potentiometer and the rotation angle of the first knob to be in a linear relationship, the rotation angle of the first knob can be judged according to the voltage of the potentiometer, that is, the position of the first knob can be judged, thereby sending a position signal to the printed circuit board assembly, so that the processing module therein adjusts the display direction of the interactive information text on the display screen according to the position signal, stabilizes the display direction of the interactive information in a direction suitable for reading, enhances the flexibility of the interactive information display and the interactivity of the knob, improves the stability of the direction of the knob displaying the interactive information text, and improves the convenience of the interactive function of the mechanical valve knob.

[0073] 4. The embodiment of the utility model sets the fixed part of the potentiometer on the gas valve body of the stove, rotates the rotating part to adjust the resistance of the potentiometer to generate different voltages, and fixes the valve stem and the rotating part so that the rotation angle of the main body can be transmitted to the rotating part through the valve stem. The potentiometer can reflect the position signal representing the main body according to the rotation angle, and transmits the position signal to the printed circuit board assembly to provide a reliable basis for adjusting the direction of the displayed text on the display screen. Based on this, the display direction of the text on the display screen can be adjusted in time with the change of the knob angle, so that the text can always be displayed in a direction that conforms to the reading habits, thereby improving the intelligence of the knob structure, enhancing the interactivity of the knob structure, improving the user experience, and improving the convenience of reading the text on the display screen.

[0074] 5. The embodiment of the utility model sets a metal strip, and when the first knob is pressed to move downward and contact the elastic contact, it can be powered on, and the printed circuit board assembly can be powered and signals can be transmitted, so that ignition and signal transmission can be achieved, which enriches the diversity of the knob functions and provides a prerequisite for the knob to display interactive information and perform interactive settings.

[0075] 6. In the embodiment of the utility model, a preset number of elastic contacts are arranged on the second knob, so that when the first knob is pressed, the metal strip of the first knob can contact the elastic contacts to realize power supply, thereby ensuring the realization of the ignition function.

[0076] 7. The embodiment of the utility model uses one wire as the total transmission wire, collects other signals onto one wire and then transmits them to the printed circuit board assembly, thereby simplifying the wiring design and saving costs.

[0077] 8. In the embodiment of the utility model, a semi-enclosed hole for accommodating the valve stem of the stove is provided on the surface of the first knob close to the stove panel, and the shape of the semi-enclosed hole matches the shape of the valve stem, and one end of the valve stem is fixedly clamped in the semi-enclosed hole, so that the first knob and the valve stem are detachably fixed to each other, and rotating the first knob drives the valve stem to rotate, thereby realizing the control of the fire power, maintaining the detachable feature of the mechanical valve stove, and improving the convenience of repair and maintenance of the stove.

[0078] 9. The embodiment of the utility model improves the waterproofness and safety of the knob structure by providing a water-retaining structure, avoids interference with the signal connection between the printed circuit board assembly and the power supply, potentiometer and other devices, reduces the possibility of failure of the interactive function of the knob structure, and further improves the stability of the interactive function of the knob structure.

[0079] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A composite knob structure, used in a cooker, characterized in that: The composite knob structure comprises a first knob (1) and a second knob (2) which are independently installed, the second knob (2) being fixedly connected to a stove panel (7) of the stove, and the first knob (1) being connected to a valve stem (4) of the stove; The first knob (1) comprises a display screen (11) for displaying information and a printed circuit board assembly (12) electrically connected to the display screen (11); the printed circuit board assembly (12) is electrically connected to the second knob (2); the second knob (2) comprises a fixed portion (21) and a rotating portion (22) for adjusting interactive information; the rotating portion (22) is rotatably arranged on the outer surface of the fixed portion (21).

2. The composite knob structure according to claim 1, characterized in that: A metal strip (13) for powering on and transmitting signals is provided on the surface of the first knob (1) close to the stove, and the metal strip (13) is electrically connected to the printed circuit board assembly (12).

3. The composite knob structure according to claim 2, characterized in that: A preset number of elastic contacts (211) for contacting and energizing the metal strip (13) are provided on a surface of the second knob (2) away from the stove panel (7), and the movable travel of the elastic contacts (211) is greater than or equal to the movable travel of the valve stem (4).

4. The composite knob structure according to claim 1, characterized in that: The composite knob structure also includes a potentiometer (3) for indicating the position of the first knob (1), and there is a linear relationship between the rotation angle of the first knob (1) and the voltage.

5. The composite knob structure according to claim 4, characterized in that: The potentiometer (3) comprises a rotating part and a fixed end, the rotating part and the fixed end are rotatably connected, the fixed end is fixedly connected to the valve body (5) of the stove, and the rotating part is provided with a through hole allowing the valve stem (4) to pass through and is fixedly connected to the valve stem (4).

6. The composite knob structure according to claim 5, characterized in that: A first conductive wire (31) is arranged on a surface of the second knob (2) close to the stove panel (7).

7. The composite knob structure according to claim 6, characterized in that: The potentiometer (3) is provided with a second wire (131) for transmitting a potential signal, and the first wire (31) is connected to the second wire (131).

8. The composite knob structure according to claim 1, characterized in that: A structure for accommodating a valve stem (4) of the stove is provided on a surface of the first knob (1) close to the stove panel (7).

9. The composite knob structure according to claim 8, characterized in that: The structure is a semi-enclosed hole (17), wherein the end of the semi-enclosed hole (17) close to the display screen (11) is closed, and the end of the semi-enclosed hole (17) away from the display screen (11) is open, and the shape of the semi-enclosed hole (17) matches the shape of the valve stem (4).

10. A cooking appliance, characterized in that: The stove comprises the composite knob structure according to any one of claims 1 to 9, and the stove is provided with a water retaining structure (6), and the second knob (2) is fixedly connected to the stove panel (7) via the water retaining structure (6).

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