Magnetism knob subassembly and water heater
Technical Field
The invention relates to the field of switch devices, in particular to a magnetic knob assembly and a water heater.
Background
Magnetic knob is used to domestic appliance a lot, especially in the electric appliance in kitchen, magnetic force magnetism through the inside magnet of knob is inhaled on the electric appliance panel, the surface of electric appliance panel has been guaranteed clean and tidy, the washing of the panel of also being convenient for, among the prior art, it reaches the purpose of magnetic control to produce the change magnetic field when response chip monitoring response magnet under the control panel is rotatory, because the knob is whole rotatory, one can influence the fixed between knob and the electric appliance panel, drop easily, two come also to make response magnetic field receive external disturbance easily, lead to the response signal to make mistakes.
Disclosure of Invention
The present invention is directed to a magnetic knob assembly and a water heater, which solves one or more of the problems of the prior art and provides at least one of the advantages of the present invention.
The technical scheme adopted for solving the technical problems is as follows:
a magnetic knob component comprises a panel, a knob body, a circuit board, a first positioning magnetic attraction piece and a second positioning magnetic attraction piece, wherein the knob body is cylindrical, and a rotary magnetic ring is rotatably sleeved on the outer peripheral wall of the knob body; the circuit board is arranged in the knob body, and a magnetic induction module for inducing the change of the magnetic field of the rotating magnetic ring is arranged on the circuit board; the first positioning magnetic piece is fixedly arranged on one side surface of the panel; the second positioning magnetic attraction piece is fixedly arranged in the bottom of the knob body, and the knob body is attracted on the other side surface of the panel through the first positioning magnetic attraction piece and the magnetic attraction of the second positioning magnetic attraction piece.
As a further improvement of the technical scheme, the button further comprises a display board arranged on the top of the knob body, and the display board is electrically connected with the circuit board.
As a further improvement of the above technical scheme, a mounting slot hole with an upward opening is formed in the knob body, the circuit board and the second positioning magnetic attraction piece are mounted in the mounting slot hole, an annular ring cover is mounted at the opening of the mounting slot hole, the display board is circular, the display board is sleeved in the ring cover in a matching manner, the circuit board is transversely arranged below the display board, a plurality of button pieces are uniformly distributed on the top surface of the circuit board, and the bottom surface of the display board is abutted to the button pieces.
As a further improvement of the technical proposal, the knob body is internally provided with an installation groove hole with an upward opening, the circuit board and the second positioning magnetic suction piece are arranged in the installation groove hole, the opening of the mounting groove hole is provided with a circular ring cover, the display panel is square, the circuit board is transversely arranged below the display board, five button pieces are arranged on the top surface of the circuit board, wherein four button pieces are arranged in a rectangular shape, the other button piece is arranged in the center of the circuit board and is abutted against the bottom surface of the display panel, the top of each of the four button pieces is connected with a button cover plate, the button cover plates are of a circle-lacking structure and are respectively in butt joint with the four sides of the display panel, the four button cover plates and the display panel are arranged together to be spliced into a circular structure and arranged in the ring cover, and the size of the circular structure is matched with the inner ring of the ring cover.
As a further improvement of the above technical solution, the magnetic induction module includes a plurality of hall sensors, the plurality of hall sensors are circumferentially distributed along a rotation center of the rotating magnetic ring, a plurality of induction magnets are embedded on the rotating magnetic ring, and the plurality of induction magnets are circumferentially distributed along the rotation center of the rotating magnetic ring.
As a further improvement of the technical scheme, a rotary ring groove is formed in the peripheral wall of the knob body, and the rotary ring is rotatably sleeved on the rotary ring groove.
As a further improvement of the above technical solution, the knob further comprises a wireless power supply module and a wireless communication module which are installed on the circuit board, wherein a wireless receiving coil is installed in the bottom of the knob body, a wireless output coil is correspondingly installed on one side surface of the panel, and the wireless power supply module and the wireless communication module are respectively electrically connected with the wireless receiving coil.
As a further improvement of the technical scheme, the first positioning magnetic attraction piece is arranged at the center of the wireless receiving coil, and the second positioning magnetic attraction piece is arranged at the center of the wireless output coil.
The invention also provides a water heater which comprises the magnetic knob assembly.
As a further improvement of the technical scheme, the panel is used as a shell of the water heater.
The invention has the beneficial effects that: when the knob body is used, the knob body is magnetically adsorbed with the first positioning magnetic attraction piece on one side surface of the panel through the second positioning magnetic attraction piece, so that the knob body is fixed on the side surface of the panel, only the rotary magnetic ring is rotated during adjustment, the knob body does not need to be rotated, the rotary magnetic ring is rotated to cause the change of an induction magnetic field, the magnetic induction module induces the change of the magnetic field, an adjustment signal is generated, the knob is adjusted, the knob body and the panel can be separated, the panel and the knob body can be conveniently cleaned or cleaned, the knob body is convenient to store, the rotary magnetic ring is rotated and the knob body is not moved, the knob body is prevented from falling off, the circuit board, the magnetic induction module and the rotary magnetic ring are integrated on the knob body, the interference of an external magnetic field can be avoided, and the anti-interference capability is enhanced.
Drawings
The invention is further described with reference to the accompanying drawings and examples;
FIG. 1 is a cross-sectional view of one embodiment of a magnetic knob assembly according to the present invention;
FIG. 2 is a top view of one embodiment of a magnetic knob assembly according to the present invention;
FIG. 3 is a schematic diagram of a circuit board according to an embodiment of the present invention;
FIG. 4 is a schematic top cross-sectional view of one embodiment of a magnetic knob assembly according to the present invention;
FIG. 5 is a front view of one embodiment of a water heater provided by the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if words such as "a plurality" are described, the meaning is one or more, the meaning of a plurality is two or more, more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 5, the magnetic knob assembly and the water heater of the present invention are made as follows:
as shown in fig. 1, a magnetic knob assembly includes a panel 100, a knob body 200, a circuit board 300, a first positioning magnetic member 400 and a second positioning magnetic member 500, wherein the knob body 200 is cylindrical, and a rotary magnetic ring 210 is rotatably sleeved on the outer peripheral wall of the knob body 200; the circuit board 300 is installed in the knob body 200, and a magnetic induction module for inducing the magnetic field change of the rotating magnetic ring 210 is installed on the circuit board 300; the first positioning magnetic element 400 is fixedly mounted on one side of the panel 100; the second positioning magnetic attraction piece 500 is fixedly installed in the bottom of the knob body 200, and the knob body 200 is attracted to the other side surface of the panel 100 through the magnetic attraction of the first positioning magnetic attraction piece 400 and the second positioning magnetic attraction piece 500.
When in use, the knob body 200 is magnetically attracted to the first positioning magnetic element 400 on one side of the panel 100 through the second positioning magnetic element 500, so as to fix the knob body 200 on the other side of the panel 100, during adjustment, only the rotating magnetic ring 210 is rotated, but the knob body 200 does not need to rotate, rotating the rotating magnetic ring 210 will cause the change of the induced magnetic field, the magnetic induction module induces the change of the magnetic field, thereby generating an adjustment signal, enabling adjustment of the knob, and once the knob body 200 is separated from the panel 100, the panel 100 and the knob body 200 can be conveniently wiped or cleaned, the knob body 200 can be conveniently stored, the magnetic ring 210 is rotated while the knob body 200 is not moved, the knob body 200 is prevented from falling off, the circuit board 300, the magnetic induction module and the rotary magnetic ring 210 are integrated on the knob body 200, so that interference from an external magnetic field can be avoided, and the anti-interference capability is enhanced.
In some embodiments, a display panel 220 disposed on the top of the knob body 200 is further included, and the display panel 220 is electrically connected to the circuit board 300. The display panel 220 can display the adjusted parameters for the adjustment of the operation of the person.
In some embodiments, a mounting slot 230 with an upward opening is formed in the knob body 200, the circuit board 300 and the second positioning magnetic attraction element 500 are mounted in the mounting slot 230, the second positioning magnetic attraction element 500 is mounted at the bottom of the mounting slot 230, an annular ring cover 240 is mounted at the opening of the mounting slot 230, the display panel 220 is circular, the display panel 220 is fittingly sleeved in the ring cover 240, the circuit board 300 is transversely disposed below the display panel 220, a plurality of button elements 310 are uniformly distributed on the top surface of the circuit board 300, and the bottom surface of the display panel 220 abuts against the button elements 310. The display panel 220 can display the adjusted parameters, and the display panel 220 can be pressed at different positions to press different buttons 310, so that the buttons 310 can correspond to different functions, thereby rotating the different functions to adjust the different functions, such as temperature adjustment, water adjustment, bathing mode, kitchen and bathroom mode, and the like. The content is displayed on the display panel 220, and the parameter is adjusted by rotating the magnetic ring 210, so that the gap can be reduced, and the attractiveness can be improved.
In some embodiments, as shown in fig. 2 and 3, the display panel 220 may be configured to have a square shape, five button members 310 are disposed on the top surface of the circuit board 300, four button members 310 are arranged in a rectangular array, another button member 310 is disposed at the center of the circuit board 300 and abuts against the bottom surface of the display panel 220, button covers 311 are connected to the tops of the four button members 310, the button covers 311 have a circular structure, the four button covers 311 are abutted against the four sides of the display panel 220, and the four button covers 311 are assembled with the display panel 220 to form a circular structure and disposed in the ring cover 240, and the circular structure has a size matching the inner ring of the ring cover 240. So that the four button covers 311 and the display panel 220 can be pressed to select the corresponding function, and the display panel 220 displays the contents of the corresponding function.
In some embodiments, the magnetic induction module comprises a plurality of hall sensors 600, the plurality of hall sensors 600 are circumferentially distributed along a rotation center of the rotating magnetic ring 210, a plurality of induction magnets 211 are embedded on the rotating magnetic ring 210, and the plurality of induction magnets 211 are circumferentially distributed along the rotation center of the rotating magnetic ring 210, so as to form a multi-pole magnetic field on the rotating magnetic ring 210. The plurality of hall sensors 600 are used for sensing the change of the magnetic field on the rotating magnetic ring 210, and the hall sensors 600 are separated by a certain angle to generate different signals, and the control IC module 900 is generally arranged on the circuit board 300, and the control IC module 900 judges the rotating direction and angle according to the difference, so as to generate an adjusting signal. The angle between the hall sensors 600 is related to the number of the induction magnets 211, i.e., the number of poles, and it is necessary to ensure that there is a phase difference between the waveforms of the signals output by the hall sensors 600.
The hall sensor 600 is a switching hall sensor, and is a polar adjustment, and the resolution of one rotation is fixed and is affected by the number of poles of the rotating magnetic ring 210, and if the hall sensor is a linear hall sensor, the knob is an approximately stepless adjustment, and the resolution of one rotation depends on the resolution of the linear hall sensor. Generally, the linear hall sensor has high resolution and can approach the effect of stepless adjustment.
As shown in fig. 4, the rotating magnetic ring 210 can be simplified to have two tile-shaped induction magnets 211 spaced by 90 ° embedded on the rotating magnetic ring 210, which can reduce the weight, and the magnetic induction module needs three hall sensors 600 spaced by 120 °. The minimum value of the coupling magnetic field generated by the two tile-shaped induction magnets 211 on the circular surface of the rotating magnetic ring 210 needs to be slightly larger than the minimum value induced by the hall sensor 600.
In some embodiments, a rotary ring groove 250 is formed on the outer peripheral wall of the knob body 200, and the rotary magnet ring 210 is rotatably sleeved on the rotary ring groove 250. The rotating magnetic ring 210 can rotate around the rotating ring groove 250, which can prevent the rotating magnetic ring 210 from falling off and also improve the smoothness of the rotation of the rotating magnetic ring 210.
In some embodiments, the wireless power supply module 320 and the wireless communication module 330 are mounted on the circuit board 300, a wireless receiving coil 700 is mounted in the bottom of the knob body 200, a wireless output coil 800 is correspondingly mounted on one side of the panel 100, and the wireless power supply module 320 and the wireless communication module 330 are respectively electrically connected with the wireless receiving coil 700. The wireless communication module 330 may be a bluetooth module, a wifi module, an NFC module, or the like in the prior art, and a communication module capable of receiving signals of bluetooth, wifi, NFC, or the like is also disposed in the controlled electrical appliance, so as to exchange data between the circuit board 300 and the controlled electrical appliance and mainly realize transmission of signals; when the knob body 200 is attached to the panel 100, power is supplied by the electromagnetic induction of the wireless output coil 800 and the wireless receiving coil 700 and an identification signal is transmitted to a controlled appliance at intervals, and the controlled appliance can increase the output power of the wireless output coil 800 to a normal operating state. If the identification signal is not received for a period of time, it is determined that there is no knob body 200 on the panel 100, and the wireless output coil 800 enters a standby state, so that a battery is not required and the electronic components and the display panel 220 inside the knob body 200 are powered by using a wireless power supply technology. And the knob body 200 and the panel 100 are non-magnetic materials, otherwise the wireless power supply is not effective.
In some embodiments, the first positioning magnetic element 400 is disposed at the center of the wireless receiving coil 700, and the second positioning magnetic element 500 is disposed at the center of the wireless output coil 800. When the first positioning magnetic element 400 and the second positioning magnetic element 500 are attracted, it can be ensured that the wireless receiving coil 700 and the wireless output coil 800 are arranged oppositely, the magnetic field effect is enhanced, and the power supply reliability is ensured.
The invention also provides a water heater, as shown in fig. 5, comprising the magnetic knob component. The panel 100 serves as a housing for the water heater. The knob body 200 can be used after being adsorbed at a specific position of the panel 100 of the water heater, and can be easily taken down when not used, so that the panel 100 of the water heater keeps neat and beautiful, the common water heater is vertically installed, the front side surface of the panel 100 is vertical, when being adjusted, the rotary magnetic ring 210 rotates, the knob body 200 is not moved, and the knob body 200 is prevented from falling off.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.