Magnetic wireless induction knob device

Abstract

The utility model discloses a kind of magnetic attraction type wireless response knob devices, including the magnetic attraction knob assembly placed above the range operating panel and the PCB integrated control panel assembly arranged below the range operating panel, the PCB integrated control panel assembly includes PCB integrated control panel, fixed seat arranged on PCB integrated control panel, third permanent magnet arranged on fixed seat and sensing unit arranged on PCB integrated control panel, the magnetic attraction knob assembly includes knob seat, rotating shaft core seat is clamped on knob seat, first permanent magnet is fixed on the range operating panel by being arranged on rotating shaft core seat and with third permanent magnet mutual adsorption so that magnetic attraction knob assembly, and second permanent magnet is arranged on knob seat, and when knob seat rotates relative to the range operating panel, the sensing unit can be triggered to produce control signal when rotating. The utility model is by being arranged with each other separated magnetic attraction knob assembly and PCB integrated control panel assembly, and magnetic attraction knob assembly can be directly taken down when cleaning operating panel.

Description

[Technical Field]

[0001] This utility model relates to a magnetic wireless sensing knob device. [Background Technology]

[0002] Currently, traditional induction cooktops and other cooktops typically have control knobs fixedly mounted on the control panel, with the knob connected to a circuit board below via an encoder. This structure has the following inherent drawbacks: First, the mounting point between the knob and the panel requires a through hole, resulting in poor panel sealing. Although there are waterproof protrusions or other designs, there is still a risk of liquid seepage over long-term use. Second, the fixed knob obstructs the cleaning of the cooktop's microcrystalline panel, and the joint between the knob and the panel easily traps dirt and grime, making cleaning inconvenient and affecting aesthetics and hygiene.

[0003] Therefore, this utility model was created based on the above-mentioned shortcomings. [Utility Model Content]

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a magnetic wireless induction knob device that is simple in structure, easy to operate and easy to clean.

[0005] This utility model is achieved through the following technical solution:

[0006] A magnetic wireless sensing knob device is characterized by comprising a magnetic knob assembly 1 placed above the stove control panel and a PCB integrated control board assembly 2 disposed below the stove control panel. The PCB integrated control board assembly 2 includes a PCB integrated control board 21, a fixing base 22 disposed on the PCB integrated control board 21, a third permanent magnet 23 disposed on the fixing base 22, and a sensing unit 24 disposed on the PCB integrated control board 21. The magnetic knob assembly 1 includes a knob base 11, a rotating shaft core seat 12 snapped onto the knob base 11, a first permanent magnet 13 disposed on the rotating shaft core seat 12 and attracted to the third permanent magnet 23 to fix the magnetic knob assembly 1 to the stove control panel, and a second permanent magnet 14 disposed on the knob base 11 and capable of triggering the sensing unit 24 to generate a control signal when the knob base 11 rotates relative to the stove control panel.

[0007] The magnetic wireless sensing knob device described above is characterized in that: the sensing unit 24 includes a plurality of Hall sensors 241, and the plurality of Hall sensors 241 are distributed in a ring array on the PCB integrated control board 21.

[0008] The magnetic wireless induction knob device described above is characterized in that: the first permanent magnet 13 and the third permanent magnet 23 have opposite magnetic polarities at the ends facing the stove operation panel, and the second permanent magnet 14 and the third permanent magnet 23 have the same magnetic polarity at the ends facing the stove operation panel.

[0009] The magnetic wireless induction knob device described above is characterized in that: the lower end of the rotating shaft core seat 12 is provided with a positioning flange 121 that abuts against the lower end of the knob seat 11 when the rotating shaft core seat 12 is installed on the knob seat 11, and separates the lower end surface of the knob seat 11 from the knob seat 11 when the magnetic knob assembly 1 is placed on the stove operation panel and contacts the stove operation panel.

[0010] The magnetic wireless sensing knob device described above is characterized in that: the knob base 11 is provided with a knob fixing through hole 111, the inner wall of the knob fixing through hole 111 is provided with a positioning boss 112, and the upper end of the rotating shaft core seat 12 is provided with an elastic buckle 122 that engages with the upper surface of the positioning boss 112 when the rotating shaft core seat 12 passes through the knob fixing through hole 111 and the positioning flange 121 abuts against the lower end of the knob base 11.

[0011] The magnetic wireless sensing knob device described above is characterized in that: the end of the elastic buckle 122 is provided with a pressing slope 1221, and the lower end face of the positioning boss 112 is provided with a guide slope 1121 that can guide and press the pressing slope 1221 to deform the elastic buckle 122 so as to pass through the positioning boss 112.

[0012] The magnetic wireless induction knob device described above is characterized in that: the rotating shaft core seat 12 is provided with a first mounting hole 123 for assembling the first permanent magnet 13; the knob seat 11 is provided with two sets of second mounting holes 113 for assembling the second permanent magnet 14; the two sets of second mounting holes 113 are centrally symmetrically arranged with the knob fixing through hole 111 as the center; and the fixing seat 22 is provided with a third mounting hole 221 for assembling the third permanent magnet 23.

[0013] The magnetic wireless induction knob device described above is characterized in that: the PCB integrated control board 21 is provided with a touch sensing module 25 that is attached to the lower surface of the stove operation panel and can receive touch input to generate control signals when the stove operation panel is touched.

[0014] The magnetic wireless sensing knob device described above is characterized in that: the touch sensing module 25 is a conductive sponge block.

[0015] The magnetic wireless sensing knob device described above is characterized in that: the PCB integrated control board 21 includes a sub-control board 211 and a main control board 212 electrically connected to the sub-control board 211; the sensing unit 24 is disposed on the main control board 212; and the fixing base 22 is provided with a lower positioning block 222 abutting against the upper surface of the sub-control board and an upper positioning block 223 abutting against the lower surface of the main control board 212 so that the main control board 212 is mounted above the main control board 211.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. This utility model features a magnetic knob assembly and a PCB integrated control board assembly that are separated from each other. The magnetic knob assembly is detachably placed above the stove control panel for manual operation by the user. The PCB integrated control board assembly is fixedly installed inside the machine below the stove control panel to receive signals and control the stove's firepower. The two are linked through magnetic adsorption positioning and wireless sensing. When cleaning the control panel, the magnetic knob assembly can be directly removed, thus eliminating any structural obstruction to the control panel and completely solving the problem of dirt accumulation. Furthermore, the assembly itself can be cleaned separately after disassembly, improving the user experience.

[0018] 2. This utility model sets a touch sensing module on the PCB integrated control board, and ensures normal firepower adjustment through touch function when the knob is missing or malfunctioning, thus avoiding the limitations of a single control method.

[0019] 3. In this utility model, the rotating shaft core seat and the knob seat are quickly snapped together and fixed by elastic buckles and positioning flanges, which has high assembly efficiency and reliable connection. Moreover, the design of the positioning flange makes the knob seat not directly contact the panel, reducing the contact friction area between the magnetic knob assembly and the operation panel, thereby reducing rotational friction and eliminating jamming during rotation, resulting in a better operating feel. [Attached Image Description]

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is an exploded view of the magnetic knob assembly of this utility model;

[0022] Figure 3 This is an exploded view of the PCB integrated control board assembly of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of this utility model when it is installed on the control panel of a stove.

Detailed Implementation Methods

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] like Figures 1 to 4 As shown, a magnetic wireless induction knob device includes a magnetic knob assembly 1 placed above a cooktop control panel 3 and a PCB integrated control board assembly 2 located below the cooktop control panel 3. The PCB integrated control board assembly 2 includes a PCB integrated control board 21, a mounting base 22 on the PCB integrated control board 21, a third permanent magnet 23 on the mounting base 22, and an induction unit 24 on the PCB integrated control board 21. The magnetic knob assembly 1 includes a knob base 11, a rotating shaft core seat 12 snapped onto the knob base 11, a first permanent magnet 13 located on the rotating shaft core seat 12 and attracted to the third permanent magnet 23 to fix the magnetic knob assembly 1 to the cooktop control panel, and a second permanent magnet 14 located on the knob base 11 and capable of triggering the induction unit 24 to generate a control signal when the knob base 11 is rotated relative to the cooktop control panel. Specifically, the knob base 11 is provided with a knob fixing through hole 111, which is located at the center of the knob base 11. The rotating shaft core seat 12 is engaged in the knob fixing through hole 111. The rotating shaft core seat 12 is provided with a first mounting hole 123 for assembling the first permanent magnet 13, which is located at the center of the rotating shaft core seat 12. The knob base 11 is provided with two sets of second mounting holes 113 for assembling the second permanent magnet 14. The mounting holes 113 are arranged symmetrically around the axis of the knob fixing through hole 111. Each group of second mounting holes 113 has two holes that are adjacent to each other. The fixing base 22 is provided with a third mounting hole 221 for assembling the third permanent magnet 23. The third mounting hole 221 is located at the center of the fixing base 22. The magnetic knob assembly 1 also includes a knob cover 15, which covers the knob base 11 and covers the knob base 11, the first permanent magnet 13 and the second permanent magnet 14.

[0026] This invention features a separate magnetic knob assembly and a PCB integrated control board assembly. The magnetic knob assembly is detachably placed above the cooktop control panel for manual operation by the user. The PCB integrated control board assembly is fixedly installed inside the machine below the cooktop control panel to receive signals and control the cooktop's heat. The two are linked through magnetic adsorption positioning and wireless sensing. When cleaning the control panel, the magnetic knob assembly can be directly removed, leaving the control panel without any structural obstruction, thus completely solving the problem of dirt accumulation. Furthermore, the assembly itself can be cleaned separately after disassembly, improving the user experience.

[0027] In this invention, the PCB integrated control board 21 includes a sub-control board 211 and a main control board 212 electrically connected to the sub-control board 211. A sensing unit 24 is mounted on the main control board 212. A mounting base 22 has a lower positioning block 222 that abuts against the upper surface of the sub-control board and an upper positioning block 223 that abuts against the lower surface of the main control board 212, thus mounting the main control board 212 above the main control board 211. The main control board 212 is mounted above the sub-control board 211, forming an interval to provide a reasonable sensing height for the sensing unit 24. Specifically, the sensing unit 24 includes multiple Hall sensors 241, which are arranged in a circular array on the PCB integrated control board 21. In a specific implementation, three Hall sensors 241 are provided. When the knob base 11 of the magnetic knob assembly 1 rotates, the second permanent magnet 14 rotates synchronously with the knob base 11. The change in its magnetic field is detected by the Hall sensor 241 of the ring array below. The Hall sensor 241 converts the change in magnetic field into an electrical signal and transmits it to the main control board 212. The main control board 212 then transmits it to the secondary control board 211, which decodes the signal and controls the stove to make corresponding firepower adjustments.

[0028] To facilitate positioning, the first permanent magnet 13 and the third permanent magnet 23 have opposite magnetic polarities at the ends facing the stove control panel, while the second permanent magnet 14 and the third permanent magnet 23 have the same magnetic polarity at the ends facing the stove control panel. When the magnetic knob assembly 1 is close to the installation position on the control panel, the first permanent magnet 13 and the third permanent magnet 23 attract each other, while the third permanent magnet and the second permanent magnet repel each other, thus enabling the magnetic knob assembly 1 to be positioned quickly and accurately.

[0029] The lower end of the rotating shaft core seat 12 is provided with a positioning flange 121, which abuts against the lower end of the knob seat 11 when the rotating shaft core seat 12 is installed on the knob seat 11, and separates the lower end surface of the knob seat 11 from the stove control panel when the magnetic knob assembly 1 is placed on the stove control panel. The positioning flange 121 is an annular protrusion structure. When the upper end of the rotating shaft core seat 12 passes through the knob fixing through hole 111, the positioning flange 121 abuts against the lower end surface of the knob seat 11, restricting the axial upward displacement of the rotating shaft core seat 12; at the same time, when the magnetic knob assembly 1 is placed on the stove control panel, only the bottom surface of the positioning flange 121 contacts the control panel, keeping the lower end surface of the knob seat 11 at a distance from the control panel, reducing rotational friction.

[0030] Furthermore, a positioning boss 112 is provided on the inner wall of the knob fixing through hole 111, and an elastic buckle 122 is provided at the upper end of the rotating shaft core seat 12, which engages with the upper end face of the positioning boss 112 when the rotating shaft core seat 12 passes through the knob fixing through hole 111 and the positioning flange 121 abuts against the lower end of the knob seat 11. Two elastic buckles 122 are provided and are symmetrically arranged along the axis of the rotating shaft core seat 12. Specifically, the end of the elastic buckle 122 is provided with a pressing slope 1221, and the lower end face of the positioning boss 112 is provided with a guide slope 1121 that can guide and press the pressing slope 1221 to deform the elastic buckle 122 so that it passes through the positioning boss 112. During installation, one end of the rotating shaft core seat 12 is inserted into the knob fixing through hole 111. The pressing inclined surface 1221 contacts the guide inclined surface 1121 and is guided and pressed, causing the elastic buckle 122 to deform inward. When the rotating shaft core seat 12 is assembled into place and the positioning flange 121 abuts against the lower end of the knob seat 11, the elastic buckle 122 returns to its original shape, and its lower end face engages with the upper end face of the positioning boss 112, thus achieving a stable engagement between the rotating shaft core seat 12 and the knob seat 11. It is also detachable for easy maintenance.

[0031] To ensure normal power adjustment via touch function in case of missing or malfunctioning knobs, the PCB integrated control board 21 is equipped with a touch sensing module 25 that rests against the lower surface of the stove's control panel and receives touch input to generate control signals when the control panel is touched, effectively avoiding the limitations of a single control method. Specifically, the touch sensing module 25 is a conductive sponge block, with two modules installed on the main control board 212, corresponding to the "power increase" and "power decrease" functions respectively. When the magnetic knob assembly 1 is lost, damaged, or removed for cleaning, the user touches the area of ​​the control panel corresponding to the touch sensing module 25, and the conductive sponge block transmits the touch signal to the PCB integrated control board 21 to adjust the power, serving as a backup control solution.

Claims

1. A magnetic wireless induction knob device, characterized in that: The system includes a magnetic knob assembly (1) placed above the stove control panel and a PCB integrated control board assembly (2) located below the stove control panel. The PCB integrated control board assembly (2) includes a PCB integrated control board (21), a mounting base (22) on the PCB integrated control board (21), a third permanent magnet (23) on the mounting base (22), and a sensing unit (24) on the PCB integrated control board (21). The magnetic knob assembly (1) includes a knob base (11), a rotating shaft core seat (12) snapped onto the knob base (11), a first permanent magnet (13) located on the rotating shaft core seat (12) and attracted to the third permanent magnet (23) to fix the magnetic knob assembly (1) on the stove control panel, and a second permanent magnet (14) located on the knob base (11) and capable of triggering the sensing unit (24) to generate a control signal when the knob base (11) rotates relative to the stove control panel.

2. The magnetic wireless sensing knob device according to claim 1, characterized in that: The sensing unit (24) includes multiple Hall sensors (241), which are arranged in a ring array on the PCB integrated control board (21).

3. The magnetic wireless sensing knob device according to claim 1, characterized in that: The first permanent magnet (13) and the third permanent magnet (23) have opposite magnetic polarities at the ends facing the stove control panel, while the second permanent magnet (14) and the third permanent magnet (23) have the same magnetic polarity at the ends facing the stove control panel.

4. The magnetic wireless induction knob device according to claim 1, characterized in that: The lower end of the rotating shaft core seat (12) is provided with a positioning flange (121) that abuts against the lower end of the knob seat (11) when the rotating shaft core seat (12) is installed on the knob seat (11) and separates the lower end surface of the knob seat (11) from the knob seat (11) when the magnetic knob assembly (1) is placed on the stove operation panel and contacts the stove operation panel.

5. The magnetic wireless sensing knob device according to claim 4, characterized in that: The knob seat (11) is provided with a knob fixing through hole (111), and the inner wall of the knob fixing through hole (111) is provided with a positioning boss (112). The upper end of the rotating shaft core seat (12) is provided with an elastic buckle (122) that is engaged with the upper end face of the positioning boss (112) when the rotating shaft core seat (12) passes through the knob fixing through hole (111) and the positioning flange (121) abuts against the lower end of the knob seat (11).

6. The magnetic wireless sensing knob device according to claim 5, characterized in that: The end of the elastic buckle (122) is provided with a pressing slope (1221), and the lower end face of the positioning boss (112) is provided with a guide slope (1121) that can guide and press the pressing slope (1221) to deform the elastic buckle (122) so as to pass through the positioning boss (112).

7. The magnetic wireless sensing knob device according to claim 5, characterized in that: The rotating shaft core seat (12) is provided with a first mounting hole (123) for assembling the first permanent magnet (13), and the knob seat (11) is provided with two sets of second mounting holes (113) for assembling the second permanent magnet (14). The two sets of second mounting holes (113) are centrally symmetrical about the axis of the knob fixing through hole (111). The fixing seat (22) is provided with a third mounting hole (221) for assembling the third permanent magnet (23).

8. The magnetic wireless sensing knob device according to claim 1, characterized in that: The PCB integrated control board (21) is provided with a touch sensing module (25) that is attached to the lower surface of the stove operation panel and can receive touch input to generate control signals when the stove operation panel is touched.

9. The magnetic wireless sensing knob device according to claim 8, characterized in that: The touch sensing module (25) is a conductive sponge block.

10. The magnetic wireless sensing knob device according to claim 1, characterized in that: The PCB integrated control board (21) includes a sub-control board (211) and a main control board (212) electrically connected to the sub-control board (211). The sensing unit (24) is disposed on the main control board (212). The mounting base (22) is provided with a lower positioning block (222) abutting against the upper surface of the sub-control board and an upper positioning block (223) abutting against the lower surface of the main control board (212) so that the main control board (212) is mounted above the main control board (211).

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