Knobs with displays and home appliances
By separating and decoupling the mechanical and electrical components, the knob design solves the problems of high cost and maintenance difficulties caused by the complex structure of traditional knobs, and achieves the effect of easy inspection and maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DIEHL AKO FUND GMBH & CO KG
- Filing Date
- 2025-09-15
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional knobs with displays have complex structures, with mechanical and electrical parts intertwined, resulting in high assembly costs and difficulties in inspection and maintenance.
Design a knob with a display screen, where the mechanical and electrical parts are separated and decoupled. The electronic control display component acts as the stator, and the mechanical rotation component acts as the rotor. The structural separation is achieved through a non-contact rotation detection sensor. The circuit board is located under the electronic control display component and is sealed with a bottom cover, simplifying assembly and maintenance.
It reduces manufacturing and assembly costs, facilitates circuit board inspection and repair, and improves production efficiency and maintenance convenience.
Smart Images
Figure CN224581830U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a knob with a display screen and a household appliance. Background Technology
[0002] Knobs with displays are increasingly used in home appliances as interactive devices that combine physical control with intuitive display. They not only provide users with rich information but also enable diverse interactive experiences. Compared to traditional button panels, users can flexibly select from a variety of functions and make precise and rapid adjustments to numerical parameters. Furthermore, these knobs can be easily adapted to the configurations and functional logic of different home appliances by modifying their circuitry, resulting in a simpler and more compact design.
[0003] However, traditional knobs with displays have complex structures, with mechanical and electrical components intertwined and layered. This results in high assembly costs in manufacturing, makes it difficult to inspect the circuit boards during production, and hinders disassembly and repair in case of malfunction.
[0004] Therefore, there is an urgent need for a technical solution to optimize the structure of knobs with displays. Utility Model Content
[0005] The objective of this invention is to provide a structurally optimized knob with a display screen, which enables structural separation and decoupling of the mechanical and electrical components, and facilitates the inspection and repair of the circuit board within the knob.
[0006] To achieve the above-mentioned task, a first aspect of this utility model relates to a knob with a display screen, the knob comprising:
[0007] Fixed electronic control display components, and
[0008] A mechanical rotating assembly rotatably arranged around the electronically controlled display assembly.
[0009] The mechanical rotating component is embedded or mounted on the outer periphery of the electronically controlled display component. The electronically controlled display component includes, from top to bottom, a cover plate and a display screen in the upper part of the electronically controlled display component and a circuit board in the lower part of the electronically controlled display component. The display screen is electrically connected to the circuit board and a rotational displacement sensor for detecting the rotation of the mechanical rotating component is provided on the circuit board. The electronically controlled display component is closed by a bottom cover located below the circuit board.
[0010] In this invention, the fixedly mounted electronic display component can be considered as the stator of the knob, which can be fixedly mounted on or integrated into the household appliance; while the rotatable mechanical rotating component can be considered as the rotor of the knob, which can rotate around the electronic display component as the stator to change the function, mode, and / or parameter selection of the household appliance. All electrical components, namely the display screen and circuit board, along with the rotational displacement sensor located thereon, are integrated in the electronic display component. These electrical components are enclosed by the housing on the circumference of the electronic display component, the upper cover, and the lower cover, thus providing an independent "electrical compartment" for the electrical part of the knob. The purely mechanical rotating component is embedded or fitted onto the outer periphery of the electronic display component. Therefore, this invention advantageously achieves structural separation and decoupling of the mechanical and electrical parts of the knob. Thus, the knob according to this invention significantly optimizes the structural design compared to knobs in the prior art, eliminating the overlapping of mechanical and electrical parts and effectively reducing assembly costs in manufacturing. Meanwhile, since the circuit board is located at the bottom of the electronic display component and is only sealed by the bottom cover, it is not only easy to inspect the circuit board during the production process, but also only needs to be repaired or replaced by removing the bottom cover in future maintenance.
[0011] According to a preferred embodiment of this invention, the rotational displacement sensor can be a magnetic sensor, and a magnetic ring can be correspondingly provided on the mechanical rotating component. Magnetic sensors, particularly Hall effect sensors, are particularly advantageous for non-contact rotational detection between the electronic display component of the knob and the mechanical rotating component. A magnetic ring can be provided on the mechanical rotating component adjacent to the magnetic sensor. For example, magnets with alternating poles can be provided in the magnetic ring, so that the magnetic sensor can detect changes in the magnetic field or magnetic flux as the mechanical rotating component rotates, thereby determining the rotational displacement and / or direction of the mechanical rotating component. It should also be noted that the rotational displacement detection accuracy can be adapted by the diameter of the magnetic ring and / or the density of the magnets to meet different operational needs.
[0012] According to one embodiment of this invention, the distance between the magnetic sensor and the magnetic ring can be less than 1 mm. To achieve high-precision rotation detection, the magnetic sensor and the magnetic ring should be positioned as close as possible. Specifically, the housing thickness of the electronic display assembly can be reduced in the region of the magnetic sensor.
[0013] According to an alternative embodiment of this utility model, the rotational displacement sensor can be a photoelectric transceiver sensor, and a corresponding dial can be provided on the mechanical rotating component. To perform non-contact rotation detection between the electronically controlled display component of the knob and the mechanical rotating component, a photoelectric transceiver sensor can also be considered. The photoelectric transceiver sensor can include a light emitter and a light receiver. The optical path between the light emitter and the light receiver can be affected by the dial on the mechanical rotating component, thereby generating several pulse signals on the light receiver as the mechanical rotating component rotates, used to determine the rotational displacement and / or direction of the mechanical rotating component. Needless to say, the housing of the electronically controlled display component can be configured to be transparent to the emitted light at the location of the photoelectric transceiver sensor.
[0014] According to one embodiment of this utility model, the scale can be configured as a grating ring or a textured ring. The photoelectric transceiver sensor can detect rotational displacement through transmission or reflection principles. The grating ring can be constructed with multiple square holes spaced at equal intervals and can be inserted between the light emitter and the light receiver, thereby alternately conducting and blocking the light path between them. Alternatively, the textured ring can be used to alternately reflect and absorb the light emitted by the light emitter.
[0015] According to one embodiment of this utility model, at least two rotational displacement sensors can be provided on the circuit board. To improve the accuracy of rotational displacement detection, it is advantageous to provide at least two rotational displacement sensors so that the average of multiple displacement values can be calculated, thereby improving the reliability of the data.
[0016] According to a particularly advantageous embodiment of this invention, two rotary displacement sensors can be arranged on the circuit board spaced apart from each other along the circumferential direction. Exemplarily, two magnetic sensors can be arranged on the circuit board spaced apart from each other along the circumferential direction of a magnetic ring, particularly adjacent to each other. The two magnetic sensors are configured such that the signal sequences sensed by the two magnetic sensors are different when the mechanical rotating component rotates clockwise and counterclockwise; in particular, the signals sensed by the two magnetic sensors have different phases, thereby allowing the rotation direction of the mechanical rotating component to be determined by the order of the signal changes sensed by the two magnetic sensors. The same principle also applies to photoelectric transceiver sensors.
[0017] According to a preferred embodiment of this utility model, the housing of the electronically controlled display component may have an annular groove in the middle of the electronically controlled display component, and a rotating disk of a mechanical rotating component can be embedded in the annular groove. The annular groove causes the electronically controlled display component to narrow in the middle to accommodate the horizontally extending rotating disk. The rotating disk has a central circular hole so that it can fit onto the bottom of the annular groove in the housing of the electronically controlled display component, thereby flexibly rotating relative to the housing of the electronically controlled display component. In this embodiment, not only is it beneficial to provide stable support for the mechanical rotating component, but the area on the circuit board can also be used efficiently to arrange the rotational displacement sensing device. Here, the housing of the electronically controlled display component can be divided into an upper housing part and a lower housing part that are connected to each other at the bottom of the annular groove.
[0018] According to an alternative embodiment of this utility model, the housing of the electronically controlled display component can be constructed as a cylinder, and a sleeve of the mechanical rotating component can be fitted onto the outer periphery of the cylindrical housing. This embodiment can further simplify the structure and assembly of the knob, making the knob thinner overall.
[0019] According to one embodiment of this invention, the knob may be equipped with a rotary tactile feedback mechanism. This mechanism provides tactile feedback to the user regarding rotational displacement during rotational operation. Particularly advantageously, the tactile feedback mechanism can provide a gear shift feel by generating segmented damping (e.g., triggering a slight pause every 5°, 10°, 15°, or 20° of rotation), assisting the user in performing accurate and precise rotational operations.
[0020] According to one embodiment of this utility model, the rotary haptic feedback mechanism may include abutting toothed structures and at least one elastic protrusion. Here, segmented damping can be generated by the elastic protrusion alternately passing over the crests and troughs of the toothed structure. The toothed structure and the elastic protrusion can be arranged in various ways in the knob. For example, the toothed structure may be provided on one of the surface of the aforementioned rotating disk and the groove wall of the annular groove, while the elastic protrusion is provided on the other. Alternatively, the toothed structure may be provided on one of the inner circumference of the central circular hole of the rotating disk and the bottom of the annular groove, while the elastic protrusion is provided on the other. As another example, the toothed structure may be provided on one of the outer circumference of the aforementioned sleeve and the cylindrical housing of the electronic display assembly, while the elastic protrusion is provided on the other.
[0021] According to a preferred embodiment of this invention, the mechanical rotating component can be pressed relative to the electronically controlled display component, and the pressing can be detected by the rotational displacement sensor. During the pressing operation, the pressed mechanical rotating component moves downward relative to the electronically controlled display component, which causes the magnetic ring or dial on the mechanical rotating component to be displaced relative to the rotational displacement sensor in the electronically controlled display component in another dimension. This results in a signal change different from that during the rotation operation, thereby detecting the user's pressing operation on the mechanical rotating component.
[0022] According to a preferred embodiment of this utility model, a resilient button can be provided between the circuit board and the bottom cover, which can be used to detect pressing on the cover of the electronically controlled display component. Here, pressing the cover of the electronically controlled display component causes the display screen and circuit board of the component to move downwards. This downward movement causes a change in the distance between the circuit board and the bottom cover. This change in distance triggers the resilient button located therebetween, thereby detecting the user's pressing operation on the cover. When the cover is released, the electronically controlled display component can be reset by means of the resilient button.
[0023] According to one embodiment of this utility model, the housing of the electronically controlled display component is configured to be waterproof and sealed or integrally formed, and / or a drainage hole is provided in the mechanical rotating component. To meet the waterproof requirements of the knob in humid or wet environments, the housing of the electronically controlled display component is preferably configured to be waterproof and sealed, particularly with a waterproof and sealed connection between the upper and lower parts of the housing. Alternatively, the housing can also be configured as an integrally formed component. Additionally or alternatively, moisture can be discharged through the drainage hole in the mechanical rotating component.
[0024] The second aspect of this utility model relates to a household appliance, characterized in that the household appliance includes a knob according to this utility model.
[0025] According to one embodiment of this utility model, the household appliance can be an air conditioner, range hood, stove, water heater, refrigerator, oven, dishwasher, food processor, coffee machine, soy milk maker, kettle, washing machine, dryer, stereo, television, smart faucet, or smart toilet.
[0026] It should be noted that the features, functions, effects, and advantages of one aspect of this utility model can also be referred to the above description of other aspects of this utility model. Furthermore, the various aspects described in this utility model can be combined with each other in various ways.
[0027] Other features of this invention are derived from the accompanying drawings and the detailed description. All the features and combinations thereof mentioned above in the specification, as well as the features and combinations thereof mentioned below in the detailed description and / or shown separately in the drawings, can be used not only in the combinations given therefor, but also in other combinations, or in their individual states. Attached Figure Description
[0028] Figure 1 A schematic cross-sectional view of a knob according to a first embodiment of the present invention is shown;
[0029] Figure 2 An exploded cross-sectional view of a knob according to a second embodiment of the present invention is shown;
[0030] Figure 3 A rotating disk in a knob according to a second embodiment of the present invention is shown;
[0031] Figure 4 A schematic cross-sectional view of a knob according to a third embodiment of the present invention is shown;
[0032] Figure 5 A schematic cross-sectional view of a knob according to a fourth embodiment of the present invention is shown. Detailed Implementation
[0033] First, it should be noted that in different embodiments, the same components are essentially referred to by the same reference numerals or the same component names. In the various figures, in order to facilitate understanding of the structure of the display device and human-computer interaction device, the various components are shown not to scale and / or enlarged and / or reduced.
[0034] Figure 1 A schematic cross-sectional view of a knob according to a first embodiment of the present invention is shown. The knob 100, shown in the figure, includes a display screen 2 and comprises:
[0035] The fixed-installation electronic control display component 200, and
[0036] A mechanical rotating assembly 300 is rotatably disposed around the electronically controlled display assembly 200.
[0037] The mechanical rotating component 300 is embedded or mounted on the outer periphery of the electronically controlled display component 200. The electronically controlled display component 200 includes, from top to bottom, a cover plate 1 and a display screen 2 located in the upper part of the electronically controlled display component 200, and a circuit board 3 located in the lower part of the electronically controlled display component 200. The display screen 2 is electrically connected to the circuit board 3, and a rotational displacement sensor 4 for detecting the rotation of the mechanical rotating component is provided on the circuit board 3. The electronically controlled display component 200 is closed by a bottom cover 5 located below the circuit board 3.
[0038] exist Figure 1 In this design, the housing of the electronically controlled display assembly 200 is configured as a split type, comprising an upper housing portion 6a and a lower housing portion 6b. The upper portion of the electronically controlled display assembly 200 is defined by the upper housing portion 6a and the cover plate 1. The display screen 2, particularly a TFT display screen, LCD display screen, LED display screen, or OLED display screen, is supported on the shoulder of the upper housing portion 6a. A through hole is constructed at the neck of the upper housing portion 6a for the ribbon cable 16 of the display screen 2, so as to connect the ribbon cable 16 to the upper side of the circuit board 3 located in the lower housing portion 6b. The circuit board 3 is housed in the lower portion of the electronically controlled display assembly 200 between the lower housing portion 6b and the bottom cover 5. Thus, all electrical components, namely the display screen 2 and the circuit board 3, along with the rotational displacement sensor 4 located thereon, are integrated in the electronically controlled display assembly 200. These electrical components are jointly enclosed by the circumferential housing of the electronically controlled display assembly 200, the upper cover plate 1, and the lower bottom cover 5, thus providing a separate "electrical compartment" for the electrical parts of the knob. The purely mechanical rotating component 300 is embedded or mounted on the outer periphery of the electronic display component 200. This advantageously achieves structural separation and decoupling of the mechanical and electrical components of the knob 100. This significantly optimizes the structural design, eliminating the overlapping of mechanical and electrical components and effectively reducing assembly costs in manufacturing. Furthermore, since the circuit board 3 is located at the bottom of the electronic display component 200 and is only enclosed by the bottom cover 5, it is easy to inspect during production and repair or replace the circuit board 3 by simply removing the bottom cover 5. Particularly advantageously, the electronic components 7, especially SMD electronic components, used for the knob can be arranged below the circuit board 3. For electrical connection of the knob 100 to household appliances for power supply and signal transmission, through holes 17 for cables can be provided in the bottom cover 5.
[0039] exist Figure 1 In this configuration, the lower part 6b of the housing is connected to the neck of the upper part 6a of the housing. The circuit board 3 can also be fixed to the end face of the neck. Alternatively, the circuit board 3 can be fixed to the upper part 6a of the housing or to the lower part 6b of the housing using fasteners or bolts.
[0040] To ensure the waterproofing of the knob 100, the lower part 6b of the housing can be interference-fitted with the neck of the upper part 6a of the housing. Alternatively, a labyrinth structure or tenon joint structure can be provided between the lower part 6b and the neck of the upper part 6a of the housing to ensure the waterproof sealing of the electronic display assembly 200. Additionally or alternatively, moisture can be discharged through a drain hole (not shown) in the mechanical rotation assembly 300.
[0041] exist Figure 1In the first embodiment shown, the rotational displacement sensor 4 can be a magnetic sensor, and a corresponding magnetic ring 8 can be provided on the mechanical rotating assembly 300. Here, the magnetic sensor is located on the upper side of the circuit board 3, and the magnetic ring 8 is correspondingly provided on the lower side of the rotating disk 9. In this way, non-contact rotation detection can be performed between the electronically controlled display assembly 200 of the knob 100 and the mechanical rotating assembly 300. For example, a magnet with alternating magnetic poles can be provided in the magnetic ring 8, so that the magnetic sensor can detect changes in the magnetic field or magnetic flux as the mechanical rotating assembly 300 rotates, thereby determining the rotational displacement and / or direction of the mechanical rotating assembly 300. Preferably, the distance between the magnetic sensor and the magnetic ring 8 can be less than 1 mm to achieve high-precision rotation detection. Figure 1 Advantageously, the thickness of the lower portion 6b of the housing of the electronically controlled display assembly 200 is reduced in the region of the magnetic sensor 4 to further shorten the distance between the magnetic sensor and the magnetic ring 8. Furthermore, the rotational displacement detection accuracy can be adapted by the diameter of the magnetic ring 8 and / or the density of the magnets therein to suit different operational needs.
[0042] To improve the accuracy of rotational displacement detection, it is advantageously stipulated that at least two rotational displacement sensors 4 can be installed on circuit board 3. Figure 1 Two magnetic sensors are positioned in the center. These two magnetic sensors can be spaced apart on the circuit board 3 along the circumferential direction to allow multiple magnetic sensors to share the same magnetic ring 8, which is beneficial for determining the rotation direction of the mechanical rotating assembly 300. Here, the two magnetic sensors can be spaced apart from each other on the circuit board 3 along the circumferential direction of the magnetic ring 8. The two magnetic sensors are configured such that the signal sequences sensed by the two magnetic sensors are different when the mechanical rotating assembly rotates clockwise and counterclockwise; in particular, the signals sensed by the two magnetic sensors have different phases, so that the rotation direction of the mechanical rotating assembly 300 can be determined by the order of the changes in the signals sensed by the two magnetic sensors. Here, the spacing between the two magnetic sensors can be determined based on the magnetic pole distribution on the magnetic ring 8. Alternatively, as shown in the figure, the two magnetic sensors can also be arranged adjacent to each other on the circuit board 3.
[0043] In the first embodiment, the mechanical rotating assembly 300 includes a horizontally extending rotating disk 9 and a vertically extending cap 10, and the rotating disk 9 and the cap 10 are connected to each other in a non-rotatable manner. Figure 1As shown, the mechanical rotating component 300, i.e., the rotating disk 9, is fitted onto the outer periphery of the electronic display component 200. For this purpose, the housing of the electronic display component 200 may have an annular groove 11 in the middle of the electronic display component 200 to receive the horizontally extending rotating disk 9. The rotating disk 9 fits onto the outer periphery of the neck of the upper part 6a of the housing, or onto the bottom 13 of the annular groove 11, allowing the rotating disk 9 to rotate flexibly relative to the fixedly mounted electronic display component 200. To smoothly and securely hold the rotating disk 9 within the annular groove 11, support protrusions may be arranged on the groove wall 12 of the annular groove 11 and / or on the rotating disk 9.
[0044] exist Figure 1 In the first embodiment, it is particularly advantageous to reuse the rotary displacement sensor 4 for detecting presses on the mechanical rotating assembly 300. When the cap 10 of the mechanical rotating assembly 300 is pressed, the rotating disk 9 moves downwards relative to the fixed electronically controlled display assembly 200. At this time, the magnetic ring 8 disposed on the rotating disk 9 moves closer to the magnetic sensor, causing an amplitude shift in the magnetic field or magnetic flux signal detected by the magnetic sensor, thereby determining the press operation for the mechanical rotating assembly 300. After the press is completed, the rotating disk 9 of the mechanical rotating assembly 300 can also advantageously be reset by means of the elastic protrusion 15 of the rotary tactile feedback mechanism, which will be further explained below.
[0045] Alternatively or additionally, the user can also perform the pressing operation by pressing the cover plate 1 of the electronically controlled display assembly 200. For this purpose, a resilient button S can be provided between the circuit board 3 and the bottom cover 5, thereby detecting the pressing of the cover plate 1 of the electronically controlled display assembly 200. Here, pressing the cover plate 1 of the electronically controlled display assembly 200 causes the display screen 2 of the electronically controlled display assembly 200, along with the circuit board 3, to move downwards. This downward movement causes a change in the distance between the circuit board 3 and the bottom cover 5. This change in distance triggers the resilient button S located therebetween, thereby detecting the user's pressing operation on the cover plate 1. When the cover plate 1 is released, the electronically controlled display assembly 200 can be reset by means of the resilient button S.
[0046] Figure 2 An exploded cross-sectional view of a knob according to a second embodiment of the present invention is shown. Figure 2 For clarity, the electronic components on circuit board 3 have been omitted. Unlike... Figure 1In the first embodiment shown, the upper housing 6a and the lower housing 6b are each constructed as flanges with necks. To connect the upper housing 6a and the lower housing 6b to each other, particularly to ensure a waterproof and sealed connection, the end faces of their necks can be fixed together by means of threaded connections or the like. The ribbon cable 16 of the display screen 2 can also be connected to the circuit board 3 in the lower housing 6b through a through-hole located in the neck. Figure 2 Additionally, a groove 18 is shown in the upper side of the lower part 6b of the housing, in which an elastic protrusion 15 for a rotary haptic feedback mechanism is constructed.
[0047] Figure 3 A rotating disc in a knob according to a second embodiment of the present invention is shown. Figure 3 The lower side of the rotating disk 9 is clearly shown in the figure. As can be seen from the figure, the rotating disk 9 is constructed with a central circular hole 19 so as to fit into the bottom 13 of the annular groove 11 of the housing of the electronic display assembly 200, that is, the neck of the upper part 6a and the lower part 6b of the housing.
[0048] Spaced apart from the central circular hole 19, a magnetic ring 8, which works in conjunction with the rotational displacement sensor 4 (here, a magnetic sensor), is first embedded on the lower side of the rotating disk 9. To assist the user in performing accurate and precise rotational operations, a toothed structure 14 for a rotational tactile feedback mechanism is provided on the outer side of the magnetic ring 8. The toothed structure 14 abuts against two elastic protrusions 15. Thus, when rotating the mechanical rotating assembly 300, or the rotating disk 9, the elastic protrusions 15 alternately pass through the crests and troughs of the toothed structure 14 to generate segmented damping. In this way, the segmented damping generated by the rotational tactile feedback mechanism provides the user with a gear shift feel. Here, the number of crests and troughs of the toothed structure 14 can be used to select whether a slight stop is triggered every 5°, 10°, 15°, or 20° of rotation.
[0049] Not limited to this location, an exchange could be considered. Figure 3 The positions of the magnetic ring 8 and the toothed structure 14 are shown. For example, it is also possible to provide the elastic protrusion 15 on the surface of the rotating disk 9, such as the upper side of the disk, and to provide the toothed structure 14 in the downward-facing groove wall 12 of the annular groove 11. Alternatively, it is also possible to provide the toothed structure 14 on one of the inner circumference of the central circular hole 19 of the rotating disk 9 and the groove bottom 13 of the annular groove 11, and to provide the elastic protrusion 15 on the other.
[0050] Figure 4 A schematic cross-sectional view of a knob according to a third embodiment of the present invention is shown. Here, the knob of the third embodiment is... Figures 1 to 3The first and second embodiments shown are essentially the same. The difference lies in that the rotational displacement sensor here is a photoelectric transceiver sensor 20, and a scale 22 can be correspondingly provided on the mechanical rotating assembly 300, which is here the rotating disk 9, thereby enabling non-contact rotation detection between the electronically controlled display assembly 200 of the knob 100 and the mechanical rotating assembly 300. The photoelectric transceiver sensor 20 may include a light emitter 20a and a light receiver 20b. The optical path between the light emitter 20a and the light receiver 20b can be affected by the scale 22. For this purpose, the lower part 6b of the housing of the electronically controlled display assembly 200 can be configured to be transparent to the emitted light at the photoelectric transceiver sensor 20, thereby generating several pulse signals on the light receiver 20b as the rotating disk 9 rotates, to determine the rotational displacement and / or direction of the mechanical rotating assembly 300. Here, the scale 22 is constructed as a textured ring, with the convex portion (e.g., Figure 4 When the light emitter 20a (on the right side of the image) is positioned above the photoelectric transceiver sensor 20, the light emitted by the light emitter 20a can be reflected onto the light receiver 20b, thereby generating a high-level pulse signal. Meanwhile, in the recessed areas of the textured ring (such as...) Figure 4 When the light emitter 20a (on the left) is positioned above the photoelectric transceiver sensor 20, the light emitted by the light emitter 20a cannot be reflected to the light receiver 20b, thereby generating a low-level pulse signal. The rotational displacement of the mechanical rotating component 300 can be advantageously determined by accumulating the number of high-level pulse signals. The rotational direction of the mechanical rotating component 300 can also be determined by the waveform of the pulse signal by means of the slope shape in the recess of the textured ring.
[0051] Alternatively, the dial can also be configured as a grating ring. In this case, the photoelectric transceiver sensor 20 can detect rotational displacement using the principle of transmission. The grating ring can be constructed with multiple square holes spaced at equal intervals. (Replacement with...) Figure 4 The grating ring in the grating can be constructed as a hollow cylinder extending in the vertical direction, which can be inserted between the light emitter 20a and the light receiver 20b, thereby alternately opening and blocking the light path between them.
[0052] Figure 5 A schematic cross-sectional view of a knob according to a fourth embodiment of the present invention is shown. Unlike the foregoing embodiments, in the knob 100 of the fourth embodiment, the mechanical rotating component 300 is integrally fitted onto the outer periphery of the electronic display component 200. For this purpose, the housing 6 of the electronic display component 200 can be constructed as a cylinder, and the sleeve 23 of the mechanical rotating component 300 can be fitted onto the outer periphery of the cylindrical housing 6. The sleeve 23 of the mechanical rotating component 300 is non-rotatably connected to the knob cap 10. Preferably, the housing 6 of the electronic display component 200 can be integrally formed.
[0053] exist Figure 5 In this configuration, the fixedly installed electronically controlled display assembly 200, within its housing 6, also includes, from top to bottom: a cover plate 1 and a display screen 2 located in the upper part of the electronically controlled display assembly 200, and a circuit board 3 located in the lower part of the electronically controlled display assembly 200. The display screen 2 and the circuit board 3 are directly electrically connected via a ribbon cable 16, eliminating the need for wiring in the neck of the aforementioned upper housing 6a and / or lower housing 6b. The housing 6 of the electronically controlled display assembly 200 is also closed by a bottom cover 5 located below the circuit board 3. Thus, Figure 5 The knob 100 shown also achieves structural separation and decoupling between the mechanical and electrical parts, and facilitates the inspection and repair of the circuit board 3 within the knob 100. Figure 5 The diagram further shows that, in the fourth embodiment, the knob 100 achieves further optimized structural compactness and thinner thickness by eliminating the annular slot 11 in the aforementioned embodiments, while also enabling the knob 100 to be assembled as simply as possible.
[0054] In the fourth embodiment, a rotational displacement sensor 4, configured as a magnetic sensor, is disposed at the edge of the circuit board 3, close to the inner circumference of the sleeve 23 and / or the cap 10 of the mechanical rotation assembly 300, thereby achieving non-contact rotation detection between the electronic display assembly 200 and the mechanical rotation assembly 300. Here, the magnetic ring 8 is fixedly clamped between the sleeve 23 and the cap 10.
[0055] When the user presses the cap 10 of the mechanical rotating component 300, the magnetic ring 8 shifts downward relative to the magnetic sensor, thereby causing an amplitude shift in the magnetic field or magnetic flux signal detected by the magnetic sensor, which can be used to determine the pressing operation of the mechanical rotating component 300.
[0056] Figure 5 The knob 100 shown may also be equipped with a rotary tactile feedback mechanism. Here, the toothed structure 14 may be arranged on the inner circumference of the sleeve 23. The toothed structure 14 abuts against the elastic protrusions 15 provided on the outer circumference of the housing 6, specifically two spaced-apart elastic protrusions 15. Stop portions higher than the toothed structure 14 are provided on the upper and lower sides respectively, so as to confine the elastic protrusions 15 within the area of the toothed structure 14. The elastic protrusions 15 can also be used to reset the sleeve 23 along with the mechanical rotating assembly 300 after the pressing of the mechanical rotating assembly 300 is completed. Not limited to the shown case, the toothed structure 14 and the elastic protrusions 15 may also be interchanged.
[0057] Although Figure 5 It is not shown in more detail here, but it is also possible that the pressing operation on the cover plate 1 of the electronic display assembly 200 is detected by the elastic button S located between the circuit board 3 and the bottom cover 5.
[0058] This invention is not limited to the embodiments shown, but includes or extends to all technical equivalents that fall within the scope of the appended claims. The positional descriptions chosen in the specification, such as, for example, top, bottom, left, right, etc., refer to the direct description and the accompanying drawings, and can be adapted to new positions according to their meaning when the positions change.
[0059] The features disclosed in this application are important for the implementation of embodiments in different design aspects, not only individually but also in any combination.
[0060] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solution of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.
Claims
1. A knob having a display screen, characterized in that, The knob (100) includes: A fixed electronically controlled display assembly (200), and A mechanical rotating assembly (300) is rotatably disposed around the electronically controlled display assembly (200). The mechanical rotating component (300) is embedded or mounted on the outer periphery of the electronically controlled display component (200). The electronically controlled display component (200) includes, from top to bottom, a cover plate (1) and a display screen (2) in the upper part of the electronically controlled display component (200) and a circuit board (3) in the lower part of the electronically controlled display component (200). The display screen (2) is electrically connected to the circuit board (3) and a rotation displacement sensor (4) for detecting the rotation of the mechanical rotating component (300) is provided on the circuit board (3). The electronically controlled display component (200) is closed by a bottom cover (5) located below the circuit board (3).
2. The knob according to claim 1, wherein The rotational displacement sensor (4) is a magnetic sensor, and a magnetic ring is correspondingly provided on the mechanical rotation component.
3. The knob according to claim 2, wherein The distance between the magnetic sensor and the magnetic ring is less than 1 mm.
4. The knob of claim 1, wherein The rotational displacement sensor is a photoelectric transceiver sensor (20), and a scale (22) is correspondingly provided on the mechanical rotation assembly (300).
5. The knob of claim 4, wherein The dial (22) is configured as a grating ring or a textured ring.
6. Knob according to one of claims 1 to 5, characterized in that At least two rotational displacement sensors (4) are provided on the circuit board (3).
7. The knob of claim 6, wherein Two rotational displacement sensors (4) are arranged on the circuit board (3) at intervals along the circumferential direction.
8. A knob according to one of claims 1 to 5, characterized in that The housing of the electronically controlled display component (200) has an annular groove (11) in the middle of the electronically controlled display component, and a rotating disk (9) of a mechanical rotating component (300) is embedded in the annular groove.
9. A knob according to one of claims 1 to 5, characterized in that The housing of the electronically controlled display component (200) is cylindrical, and the sleeve (23) of the mechanical rotating component (300) is fitted on the outer periphery of the cylindrical housing.
10. A knob according to one of claims 1 to 5, characterized in that The knob (100) is equipped with a rotary tactile feedback mechanism.
11. The knob according to claim 10, wherein The rotary haptic feedback mechanism includes toothed structures (14) that abut against each other and at least one elastic protrusion (15).
12. A knob according to one of claims 1 to 5, characterized in that The mechanical rotating assembly (300) can be pressed relative to the electronically controlled display assembly (200), and the pressing can be detected by the rotational displacement sensor (4).
13. A knob according to one of claims 1 to 5, characterized in that A spring-loaded button (S) is provided between the circuit board (3) and the bottom cover (5) to detect the pressing of the cover plate (1) of the electronic display component (200).
14. A knob according to one of claims 1 to 5, characterized in that The housing of the electronically controlled display assembly (200) is configured to be waterproof and sealed or integrally formed, and / or has a drainage hole in the mechanical rotating assembly (300).
15. A domestic appliance characterized in that, The household appliance includes a knob according to any one of claims 1 to 14.
16. The appliance according to claim 15, characterized in that, The household appliances mentioned include air conditioners, range hoods, stoves, water heaters, refrigerators, ovens, dishwashers, food processors, coffee makers, soy milk makers, kettles, washing machines, dryers, stereos, televisions, smart faucets, or smart toilets.