阅读说明：本技术 一种旋钮、控制方法、控制器及电器设备 (Knob, control method, controller and electrical equipment ) 是由 汤正伟 黎志 李家会 郭西龙 于 2021-07-06 设计创作，主要内容包括：本发明适用于调节旋钮领域,提供了一种旋钮、控制方法、控制器及电器设备,该旋钮包括相对且分离设置的固定组件和旋转组件,所述旋转组件可相对于所述固定组件转动；所述旋转组件包括旋转件和N个第一磁铁,N个所述第一磁铁周向均布设于所述旋转件,且相邻两所述第一磁铁极性相反；所述固定组件包括固定件和Y个顶端面朝向所述旋转件的导磁柱,Y个所述导磁柱周向均布设于所述固定件并与N个所述第一磁铁所在的圆周相对应,且所述导磁柱侧面周向缠绕有线圈绕组。本发明实施例通过在导磁柱侧面周向缠绕线圈绕组,调节导磁柱的磁路方向及磁力,从而实现主动调节旋钮的旋转扭力及旋转手感,以满足不同用户的需求,提高用户使用体验感。(The invention is suitable for the field of adjusting knobs, and provides a knob, a control method, a controller and electrical equipment, wherein the knob comprises a fixed component and a rotating component which are oppositely and separately arranged, and the rotating component can rotate relative to the fixed component; the rotating assembly comprises a rotating piece and N first magnets, the N first magnets are uniformly distributed on the rotating piece in the circumferential direction, and the polarities of the two adjacent first magnets are opposite; the fixed subassembly includes the mounting and the orientation of Y individual top face the magnetic conduction post of rotating member, Y magnetic conduction post circumference equipartition is located the mounting is and with N the circumference at first magnet place is corresponding, just magnetic conduction post side circumference winding has coil winding. According to the embodiment of the invention, the coil winding is wound on the side surface of the magnetic conduction column in the circumferential direction, and the magnetic path direction and the magnetic force of the magnetic conduction column are adjusted, so that the rotating torque force and the rotating hand feeling of the active adjusting knob are realized, the requirements of different users are met, and the use experience of the users is improved.)

1. A knob, which is characterized by comprising a fixed component and a rotating component which are oppositely and separately arranged, wherein the rotating component can rotate relative to the fixed component;

the rotating assembly comprises a rotating piece and N first magnets, the N first magnets are uniformly distributed on the rotating piece in the circumferential direction, and the polarities of the two adjacent first magnets are opposite, wherein N is more than or equal to 2, and N is a positive even number;

the fixed subassembly includes the mounting and the orientation of Y individual top face the magnetic conduction post of rotating member, Y is magnetic conduction post circumference equipartition is located the mounting is and with N the circumference at first magnet place is corresponding, and wherein, Y > N, Y are positive integer and be the multiple of three, just magnetic conduction post side circumference winding has coil winding, coil winding is three-phase winding.

2. The knob according to claim 1, wherein the fixing member is provided with a connecting ring at a side thereof facing the rotating member, and the bottom ends of the Y magnetic conductive columns are connected to the connecting ring.

3. The knob according to claim 2, wherein an end of the magnetic conductive post remote from the magnetic conductive ring is provided with a retaining portion.

4. The knob according to claim 2 or 3, wherein the connection ring is integrally formed with Y of the magnetically permeable posts.

5. The knob according to claim 1, wherein said first magnet is disposed on a side of said rotating member facing said fixed member.

6. The knob according to claim 5, wherein a side of the rotating member facing the fixing member is provided with a first recess in which the first magnet is placed.

7. The knob according to claim 1, wherein a second magnet is provided in the middle of the fixing member;

and a third magnet corresponding to the second magnet is arranged in the middle of the rotating piece, and the polarity of the third magnet is opposite to that of the second magnet.

8. The knob according to claim 7, wherein a second recess for placing the second magnet is formed in a middle portion of a side of the fixed member facing the rotating member, and a third recess for placing the third magnet is formed in a middle portion of a side of the rotating member facing the fixed member.

9. The knob according to claim 8, wherein a first boss is provided at a middle portion of a side of the fixing member facing the rotating member, the second recess is provided at a top portion of the first boss, a second boss is provided at a middle portion of a side of the rotating member facing the fixing member, and the third recess is provided at a top portion of the second boss.

10. An electrical device comprising a device body, a glass plate, and the knob of any of claims 1-9, wherein the glass plate is disposed on the device body, the fixed component is disposed on an inner side of the glass plate, and the rotating component is disposed on an outer side of the glass plate.

11. A method for controlling enhanced hand feel of a knob, wherein the knob is the knob according to any one of claims 1 to 9, and a stroke of the knob from one gear to the next gear is a gear stroke, the method comprising:

detecting the rotating position and the rotating direction of the rotating piece;

when the rotating piece starts to rotate from one gear, the coil winding is electrified, so that the winding gives torque in the opposite direction of the rotation of the rotating piece, and the rotation is blocked;

when the rotating member rotates for a preset stroke, the energization mode of the coil winding is switched, so that the winding gives a torque in the same direction as the rotation of the rotating member, and the rotating member is promoted to rotate to the next gear, wherein the preset stroke is smaller than one gear stroke.

12. The method of enhanced feel control of a knob of claim 11 wherein said predetermined travel is 1/2 of said shift positions.

13. A control for a knob according to any one of claims 1 to 9, the knob having a stroke of one gear step for rotating from one gear step to the next gear step, the control comprising:

the first position detection module is used for detecting the rotating position and the rotating direction of the rotating piece; (ii) a

The first execution module is used for electrifying the coil winding when the rotating member starts to rotate from one gear, so that the coil winding gives torque in the opposite direction of the rotation of the rotating member to block the rotation;

and the second execution module is used for switching the energization mode of the coil winding when the rotating member rotates for a preset stroke, so that the coil winding gives the torque in the same direction as the rotation of the rotating member, and the rotating member is promoted to rotate to the next gear, wherein the preset stroke is smaller than one gear stroke.

14. A method for controlling automatic rotation of a rotary knob, wherein the rotary knob is a rotary knob according to any one of claims 1 to 9, and the rotary knob is provided with an initial gear position and a plurality of working gear positions, the method comprising:

detecting the rotating position and the rotating direction of the rotating piece;

and after the rotating member rotates to one working gear in a first direction, energizing the coil winding to enable the coil winding to give a torque in a second direction to the rotating member so as to drive the rotating member to rotate to the initial gear, wherein the first direction is opposite to the second direction.

15. The method for controlling automatic rotation of a rotary knob according to claim 14, wherein said rotating said rotary member in a first direction to one of said operating positions comprises in particular:

manually rotating the rotating member to rotate the rotating member in a first direction to one of the operating positions; or

And controlling the rotating member to rotate to one working gear in a first direction through the APP.

16. A control for a rotary knob according to any one of claims 1 to 9, said rotary knob being provided with an initial gear position and a plurality of operating gear positions, said control comprising:

the second position detection module is used for detecting the rotating position and the rotating direction of the rotating piece;

and the third execution module is used for electrifying the coil winding after the rotating member rotates to one working gear in the first direction, so that the coil winding gives a torque in the second direction to the rotating member, and the rotating member is driven to rotate to the initial gear, wherein the first direction is opposite to the second direction.

Technical Field

The invention belongs to the field of adjusting knobs, and particularly relates to a knob, a control method, a controller and electrical equipment.

Background

The induction cooker is also called as an induction cooker, is a product of modern kitchen revolution, and directly generates heat at the bottom of a pot without open fire or conduction heating, so that the heat efficiency is greatly improved.

Some switches of present electromagnetism kitchen adopt touch switch, and some adopt code formula knob switch, and code formula knob switch drives the coding switch through rotatory knob and rotates together, changes the resistance value of access in the circuit to produce different partial pressure values, read the partial pressure value by the little the control unit MCU of electromagnetism kitchen again, obtain different gears according to the size of partial pressure value.

As shown in fig. 1, the existing coded knob electromagnetic stove drives the coding switch 2 arranged on the circuit board 5 to rotate through the knob 1, so that the knob 1 is connected with the coding switch 2, a through hole 4 needs to be formed in the glass panel 3 of the electromagnetic stove, the knob 1 is connected with the coding switch 2 through the through hole 4, but the following problem exists in the hole opening of the glass panel 3:

firstly, the procedure of producing the glass panel is increased, the reject ratio of the processed product is increased, and the production cost is increased;

secondly, the mechanical strength of the glass panel is reduced;

thirdly, the glass panel of the electromagnetic oven has poor sealing performance, and a waterproof design needs to be added to the glass panel with the hole, so that the production cost is increased.

For solving above-mentioned problem, magnetic type knob has appeared, and the part of glass panels both sides passes through the magnetic force mutual adsorption of magnet and fixes on glass panels, carries out the gear through magnetic induction element and adjusts, but, the back is installed to magnet, and magnetic force is fixed unadjustable, and the rotation torsion of knob can not be adjusted to lead to the rotatory feeling of knob also unadjustable, can not satisfy different users' demand.

Disclosure of Invention

The invention provides a knob, aiming at solving the problem that the rotation torque force of the existing knob is not adjustable.

The knob comprises a fixed component and a rotating component which are oppositely and separately arranged, wherein the rotating component can rotate relative to the fixed component;

the rotating assembly comprises a rotating piece and N first magnets, the N first magnets are uniformly distributed on the rotating piece in the circumferential direction, and the polarities of the two adjacent first magnets are opposite, wherein N is more than or equal to 2, and N is a positive even number;

the fixed subassembly includes the mounting and the orientation of Y individual top face the magnetic conduction post of rotating member, Y is magnetic conduction post circumference equipartition is located the mounting is and with N the circumference at first magnet place is corresponding, and wherein, Y > N, Y are positive integer and be the multiple of three, just magnetic conduction post side circumference winding has coil winding, coil winding is three-phase winding.

Furthermore, one side of the fixing part, which faces the rotating part, is provided with a connecting ring, and the bottom ends of the Y magnetic conduction columns are connected to the connecting ring.

Furthermore, one end of the magnetic conduction column, which is far away from the magnetic conduction ring, is provided with an anti-falling part.

Furthermore, the connecting ring and the Y magnetic conduction columns are integrally formed.

Further, the first magnet is disposed on a side of the rotating member facing the fixed member.

Furthermore, a first concave cavity for placing the first magnet is arranged on one side of the rotating piece facing the fixed piece.

Furthermore, a second magnet is arranged in the middle of the fixing piece;

and a third magnet corresponding to the second magnet is arranged in the middle of the rotating piece, and the polarity of the third magnet is opposite to that of the second magnet.

Furthermore, a second cavity for placing the second magnet is arranged in the middle of one side, facing the rotating piece, of the fixing piece, and a third cavity for placing the third magnet is arranged in the middle of one side, facing the fixing piece, of the rotating piece.

Furthermore, the fixing part is provided with a first boss in the middle of one side of the rotating part, the second cavity is arranged at the top of the first boss, the rotating part is provided with a second boss in the middle of one side of the fixing part, and the third cavity is arranged at the top of the second boss.

The invention also provides electrical equipment which comprises an equipment body, a glass plate and the knob, wherein the glass plate is arranged on the equipment body, the fixed component is arranged on the inner side of the glass plate, and the rotating component is arranged on the outer side of the glass plate.

The invention also provides a control method for enhancing hand feeling of the knob, wherein the knob is the knob, the stroke of the knob rotating from one gear to the next gear is a gear stroke, and the method comprises the following steps:

detecting the rotating position and the rotating direction of the rotating piece;

when the rotating piece starts to rotate from one gear, the coil winding is electrified, so that the coil winding gives torque in the opposite direction of the rotation of the rotating piece, and the rotation is blocked;

when the rotating member rotates for a preset stroke, the energization mode of the coil winding is switched, so that the coil winding gives a torque in the same direction as the rotation of the rotating member, and the rotating member is promoted to rotate to the next gear, wherein the preset stroke is smaller than one gear stroke.

Still further, the preset stroke is 1/2 gear strokes.

The present invention also provides a controller for a knob, wherein the knob is the above knob, a stroke of the knob from one gear to the next gear is a gear stroke, and the controller includes:

the first position detection module is used for detecting the rotating position and the rotating direction of the rotating piece; (ii) a

The first execution module is used for electrifying the coil winding when the rotating member starts to rotate from one gear, so that the coil winding gives torque in the opposite direction of the rotation of the rotating member to block the rotation;

and the second execution module is used for switching the energization mode of the coil winding when the rotating member rotates for a preset stroke, so that the coil winding gives the torque in the same direction as the rotation of the rotating member, and the rotating member is promoted to rotate to the next gear, wherein the preset stroke is smaller than one gear stroke.

The invention also provides an automatic rotation control method of the knob, which is characterized in that the knob is the knob, the knob is provided with an initial gear and a plurality of working gears, and the method comprises the following steps:

detecting the rotating position and the rotating direction of the rotating piece;

and after the rotating member rotates to one working gear in a first direction, energizing the coil winding to enable the coil winding to give a torque in a second direction to the rotating member so as to drive the rotating member to rotate to the initial gear, wherein the first direction is opposite to the second direction.

Furthermore, the rotating member to one of the operating positions in the first direction specifically includes:

manually rotating the rotating member to rotate the rotating member in a first direction to one of the operating positions; or

And controlling the rotating member to rotate to one working gear in a first direction through the APP.

The invention also provides a controller of the knob, wherein the knob is the knob, the knob is provided with an initial gear and a plurality of working gears, and the controller comprises:

the second position detection module is used for detecting the rotating position and the rotating direction of the rotating piece;

and the third execution module is used for electrifying the coil winding after the rotating member rotates to one working gear in the first direction, so that the coil winding gives a torque in the second direction to the rotating member, and the rotating member is driven to rotate to the initial gear, wherein the first direction is opposite to the second direction.

The rotating component and the fixing component of the embodiment of the invention are arranged oppositely and separately, the rotating component and the fixing component can be arranged at two sides of the glass panel, the rotating component and the fixing component are adsorbed on the glass panel through the magnetic attraction between the first magnets and the magnetic conduction columns, holes do not need to be drilled on the glass panel, when a user rotates the rotating component to enable the next first magnet to approach the magnetic conduction column, because the polarities of the two adjacent first magnets on the rotating component are opposite, the magnetic conduction column generates sudden change under the sequential action of the two adjacent first magnets with opposite polarities, the magnetic conduction direction of the magnetic conduction column to the next first magnet is changed from the original direction to the opposite direction, so that sudden change rotating hand feeling is generated, and the magnetic circuit direction and the magnetic force of the magnetic conduction column are adjusted by winding the coil winding circumferentially at the side surface of the magnetic conduction column, so that the rotating torsion and the rotating hand feeling of the knob are adjusted actively, the requirements of different users are met, and the use experience of the users is improved.

Drawings

FIG. 1 is a perspective view of a prior art coded knob;

FIG. 2 is a perspective view provided by the present invention;

FIG. 3 is an exploded view of the present invention;

FIG. 4 is a perspective view of a fastener provided in accordance with the present invention;

FIG. 5 is a perspective view of a securing assembly provided by the present invention;

FIG. 6 is a perspective view of a rotating member provided by the present invention;

FIG. 7 is a perspective view of a rotating assembly provided by the present invention;

FIG. 8 is a flow chart of a method of enhanced feel control of a knob provided by the present invention;

FIG. 9 illustrates a BLDC-mode driving circuit with two power supplies according to the present invention;

FIG. 10 is a graph of the position change of a permanent magnet in a sinusoidal three-phase FOC energized drive mode provided by the present invention;

FIG. 11 is a schematic view of a first energization form of the coil windings of the present invention;

FIG. 12 is a schematic view of a second energization form of the coil windings of the present invention;

FIG. 13 is a schematic diagram of a controller provided by the present invention;

FIG. 14 is a flow chart of a method of controlling automatic rotation of a knob provided by the present invention;

fig. 15 is a schematic diagram of another controller provided by the present invention.

In the figure, 10, a fixing member; 11. a second cavity; 12. a first boss; 20. a rotating member; 21. a first cavity; 22. a third cavity; 23. a second boss; 30. a first magnet; 41. a magnetically conductive post; 411. an anti-drop part; 42. a connecting ring; 43. a coil winding; 50. a second magnet; 60. a third magnet; 71. a first position detection module; 72. a first execution module; 73. a second execution module; 74. a second position detection module; 75. and a third execution module.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The knob comprises a fixed component and a rotating component which are oppositely and separately arranged, wherein the rotating component can rotate relative to the fixed component; the rotating assembly comprises a rotating piece and N first magnets, the N first magnets are uniformly distributed on the rotating piece in the circumferential direction, and the polarities of the two adjacent first magnets are opposite; the fixed subassembly includes the mounting and the orientation of Y individual top face the magnetic conduction post of rotating member, Y magnetic conduction post circumference equipartition is located the mounting is and with N the circumference at first magnet place is corresponding, just magnetic conduction post side circumference winding has coil winding. The rotating assembly and the fixing assembly are arranged oppositely and separately, and can be arranged on two sides of the glass panel, and the rotating assembly and the fixing assembly are adsorbed on the glass panel through the magnetic attraction between the first magnet and the magnetic conduction column without punching on the glass panel; when the user rotates the rotating assembly, when making next first magnet be close to the magnetic conduction post, because two adjacent first magnet opposite polarity on the rotating member, the magnetic conduction post is under the effect in proper order of two adjacent first magnet opposite polarity, its magnetic circuit direction can produce the sudden change, can make the magnetic conduction direction of magnetic conduction post to next first magnet become the opposite direction by former direction, thereby produce the rotatory of sudden change and feel, and through at magnetic conduction post side circumference winding coil winding, adjust the magnetic circuit direction and the magnetic force of magnetic conduction post, thereby realize the rotatory torsion and the rotatory of initiative adjust knob and feel, in order to satisfy different users' demand, improve user and use experience and feel.

Example one

As shown in fig. 2 to 7, the present invention provides a knob, including:

the rotating assembly can rotate relative to the fixed assembly;

the rotating assembly comprises a rotating part 20 and N first magnets 30, the N first magnets 30 are uniformly distributed on the rotating part 20 in the circumferential direction, the polarities of the adjacent two first magnets 30 are opposite, wherein N is more than or equal to 2, and N is a positive even number;

fixed subassembly includes the orientation of the top of mounting 10 and Y the magnetic conduction post 41 of rotating member 20, Y the equipartition of 41 circumferences of magnetic conduction post is located mounting 10 and with N the circumference at first magnet 30 place is corresponding, and wherein, Y > N, Y are positive integer and are the multiple of three, just 41 side circumferences of magnetic conduction post twines there is coil winding 43, coil winding is three-phase winding.

In the present embodiment, the magnetic conductive column 41 has no magnetism, can conduct magnetism, and generates magnetism under the action of the magnet or the energized coil winding 43, such as silicon steel sheet, various iron products, and the like. The circumference of the magnetic pole 41 and the first magnet 30 corresponds to each other, which means that the magnetic field of the first magnet 30 can act on the magnetic pole 41, and is not an absolute limitation on the positions of the magnetic pole 41 and the first magnet 30.

In the embodiment of the present invention, the first magnet 30 is disposed on the rotating member 20, the first magnet 30 is a permanent magnet, the rotating member 20 and the first magnet 30 rotate synchronously, the fixed member 10 is disposed with the magnetic conductive posts 41, when the rotating member rotates, the first magnet 30 is driven to rotate relative to the magnetic conductive posts 41, so that one first magnet 30 and one magnetic conductive post 41 are stopped once when corresponding to each other, thereby forming one gear.

The number of the magnetic columns 41 and the first magnets 30 can be set according to the actual gear requirement, N can be 2, 4, 6, 8 … …, Y can be 3, 6, 9, 12, 18 … …, and when N/Y is 2/3, the number of the gears is 2Y, for example, 18 gears can be formed by 6 first magnets 30 which are uniformly distributed and 9 magnetic columns 41 which are uniformly distributed.

The coil winding 43 wound on the magnetic conductive posts 41 is composed of one coil or a plurality of coils, the coil winding 43 wound on each magnetic conductive post 41 can be independently powered, or the coil winding 43 wound on each magnetic conductive post 41 can be connected in series and then powered, so as to adjust the magnetic force of the magnetic conductive posts 41. When the coil winding 43 is energized, a magnetic field is generated, and when the direction of the magnetic field is the same as the direction of the magnetic field of the corresponding first magnet 30, the rotational torque and the rotational hand feeling are increased, and when the direction of the magnetic field is opposite, the rotational torque and the rotational hand feeling are decreased. The knob can also actively rotate, vibrate, etc. by using electromagnetic torque formed by a magnetic field generated after the coil winding 43 is electrified, and can even generate music by using electromagnetic frequency modulation.

Furthermore, one end of the magnetic conductive column 41 away from the magnetic conductive ring is provided with an anti-drop portion 411. The anti-falling portion 411 is located at the end of the magnetic conducting column 41, protrudes out of the side surface of the magnetic conducting column 41, and may be in the shape of a ring, a bump or other shapes, so as to prevent the coil winding 43 from falling off from the end of the magnetic conducting column 41.

Furthermore, the first magnet 30 is disposed on a side of the rotating member 20 facing the fixed member 10, so that no barrier is disposed between the first magnet 30 and the magnetic conductive column 41, and the magnetic barrier is prevented from affecting the magnetic force between the first magnet 30 and the magnetic conductive column 41.

Further, a first cavity 21 for placing the first magnet 30 is provided on a side of the rotating member 20 facing the fixed member 10. The first cavity 21 may be a large cavity or a plurality of separate cavities equal in number to the first magnet 30. Set up first cavity 21, place first magnet 30 in first cavity 21, be favorable to installing first magnet 30 firstly, secondly can set up the height of first cavity 21 to be the same with the height of first magnet 30 or be higher than the height of first magnet 30, make the lateral wall of first cavity 21 exceed first magnetic member, protect first magnet 30 not receive the striking of side foreign object, prevent that first magnet 30 from misplacing.

Optionally, an induction element (not shown in the figure) generating a signal with the first magnet 30 may be further disposed on the fixed member 10, the induction element may be, but is not limited to, one of a hall element and a reed switch, when the rotating member 20 drives the first magnet 30 to rotate, the first magnet 30 and the induction element are just opposite to generate a signal, and an induction signal may be output to a gear through circuit setting, so that in the rotating process of the rotating member 20, a gear adjustment may be performed while a hand feeling pause is generated each time, and the first magnets 30 are uniformly distributed, so that the rotation angles of each gear are the same.

The method and the principle of the sudden change of the rotating hand feeling generated when the coil winding is electrified in the embodiment of the invention are shown in the fifth embodiment.

The rotating assembly and the fixing assembly are opposite and separately arranged, can be arranged on two sides of the glass panel, and are adsorbed on the glass panel through the magnetic attraction between the first magnet 30 and the magnetic conduction column 41 without punching on the glass panel; when a user rotates the rotating component to make the next first magnet 30 approach to the magnetic pole 41, because the polarities of the two adjacent first magnets 30 on the rotating component 20 are opposite, the magnetic pole 41 changes its magnetic path direction under the sequential action of the two adjacent first magnets 30 with opposite polarities, so that the magnetic direction of the magnetic pole 41 to the next first magnet 30 changes from the original direction to the opposite direction, thereby generating a sudden-change rotating hand feeling, and the magnetic path direction and the magnetic force of the magnetic pole 41 are adjusted by circumferentially winding the coil winding 43 on the side surface of the magnetic pole 41, thereby realizing the rotating torque force and the rotating hand feeling of the active adjusting knob, so as to meet the requirements of different users, and improve the user experience.

Example two

As shown in fig. 3 and 5, in an alternative embodiment of the present invention, a connection ring 42 is disposed on one side of the fixing member 10 facing the rotating member 20, and the bottom ends of the Y magnetic conduction columns 41 are connected to the connection ring 42. The bottom ends of the Y magnetic conduction columns 41 are connected to the connecting ring 42, so that the Y magnetic conduction columns 41 are integrated, and the connecting ring 42 is convenient to mount and dismount. The connecting ring 42 and the magnetic conducting column 41 may be made of the same material or different materials.

Further, the connection ring 42 is integrally formed with the Y magnetic conduction columns 41. The integral forming method includes casting or cutting Y slots at one end of the ring material to form Y magnetic conducting columns 41, the slots do not penetrate through the ring material, and the uncut end forms the connecting ring 42. The specific shape of the connecting ring 42 and the Y magnetic conductive columns 41 after being integrally formed can be referred to a stator core of the motor.

EXAMPLE III

As shown in fig. 5 and 7, in an alternative embodiment of the present invention, a second magnet 50 is disposed in the middle of the fixing member 10;

a third magnet 60 corresponding to the second magnet 50 is disposed at the middle of the rotary member 20, and the third magnet 60 has a polarity opposite to that of the second magnet 50.

Through the magnetic attraction between the third magnet 60 and the second magnet 50 with opposite polarities, the rotating member 20 can be installed at a position opposite to the fixed member 10 across the glass plate, so that the circumferences of the magnetic columns 41 and the first magnet 30 correspond to each other. Further, the center of the third magnet 60 and the second magnet 50 may be used as a rotation axis, so that the rotating member may rotate with respect to the fixed member.

Further, as shown in fig. 4 and 6, a second cavity 11 for placing the second magnet 50 is formed in the middle of the side of the fixed member 10 facing the rotating member 20, and a third cavity 22 for placing the third magnet 60 is formed in the middle of the side of the rotating member 20 facing the fixed member 10. The second cavity 11 is provided to facilitate installation of the second magnet 50 and protect the second magnet 50, and the third cavity 22 is provided to facilitate installation of the third magnet 60 and protect the third magnet 60, which is the same as the first cavity 21, and will not be described in detail.

Furthermore, a first boss 12 is disposed in the middle of one side of the fixed member 10 facing the rotating member 20, the second cavity 11 is disposed on the top of the first boss 12, a second boss 23 is disposed in the middle of one side of the rotating member 20 facing the fixed member 10, and the third cavity 22 is disposed on the top of the second boss 23. The first boss 12 and the second boss 23 are arranged, the second concave cavity 11 is arranged on the top of the first boss 12, the third concave cavity 22 is arranged on the top of the second boss 23, the third magnet 60 installed in the third concave cavity 22 is enabled to be closer to the second magnet 50 installed in the second concave cavity 11, and the magnetic attraction force between the third magnet 60 and the second magnet 50 is enabled to be larger.

Example four

The invention also provides electrical equipment, which comprises but is not limited to a gas stove, an induction cooker, an electromagnetic heating pressure cooker, an electromagnetic heating electric cooker, a water heater or a wall-mounted stove. Specifically, the electrical equipment comprises an equipment body, a glass plate and the knob, wherein the glass plate is arranged on the equipment body, the fixed component is arranged on the inner side of the glass plate, and the rotating component is arranged on the outer side of the glass plate.

The rotating assembly and the fixing assembly are opposite and separately arranged, can be arranged on two sides of the glass panel, and are adsorbed on the glass panel through the magnetic attraction between the first magnet 30 and the magnetic conduction column 41 without punching on the glass panel; when the user rotates the rotating assembly to make the next first magnet 30 approach to the magnetic conducting column 41, because the polarities of the two adjacent first magnets 30 on the rotating member 20 are opposite, the magnetic conducting column 41 has a sudden change in the magnetic path direction under the sequential action of the two adjacent first magnets 30 with opposite polarities, so that the magnetic conducting direction of the magnetic conducting column 41 to the next first magnet 30 is changed from the original direction to the opposite direction, thereby generating a sudden change in the rotating hand feeling and improving the user experience.

EXAMPLE five

As shown in fig. 8, the present invention further provides a method for controlling enhanced feel of a knob, where a stroke of the knob from one gear to the next gear is a gear stroke, and the method includes:

detecting the rotating position and the rotating direction of the rotating piece;

when the rotating piece starts to rotate from one gear, the coil winding is electrified, so that the coil winding gives torque in the opposite direction of the rotation of the rotating piece, and the rotation is blocked;

when the rotating member rotates for a preset stroke, the energization mode of the coil winding is switched, so that the coil winding gives a torque in the same direction as the rotation of the rotating member, and the rotating member is promoted to rotate to the next gear, wherein the preset stroke is smaller than one gear stroke.

Preferably, the preset stroke is 1/2 gear strokes. Of course, the preset stroke may also be 1/3 gear strokes, 2/3 gear strokes, or others.

In this embodiment, the rotation position and the rotation direction of the rotating member may be detected by a position sensor, after a user starts to rotate the rotating member, the position sensor monitors the rotation position and the rotation direction of the rotating member in real time, and after the rotating member starts to rotate and the rotating member rotates to a preset stroke, the coil winding is energized to apply a torque to the coil winding in a direction opposite to the rotation direction of the rotating member to block the rotation, so that the user feels that the rotating member is difficult to rotate, after the position sensor detects that the rotation of the rotating member exceeds the preset stroke, the rotating member rotates to a next gear at the moment, the energizing direction of the coil winding is changed to apply a torque to the rotating member in the same direction by the coil winding, so as to promote the rotating member to rotate to the next gear, so that the user feels that the rotating member is easy, even without applying force, under the magnetic force of the coil winding, the rotating member is rotated to the next gear, and the retarding force is changed to the promoting force by the preset stroke position, so that the abrupt change of the rotating hand feeling is generated.

There are various ways of switching the coil winding, for example: a BLDC mode in which two are energized, a sinusoidal three-phase FOC energization driving mode, and the like. The number of the magnetic columns on the fixed component is a multiple of three, each magnetic column is wound with a coil winding of a three-phase winding, all the coil windings are led out of three wires A, B, C, wherein 1, 4 and 7 … … are led out of A after being connected and are called as A-phase windings, 2, 5 and 8 … … are led out of B after being connected and are called as B-phase windings, 3, 6 and 9 … … are led out of C after being connected and are called as C-phase windings, for convenience of explanation, the embodiment of the invention takes three coil windings as an example for explanation, and the three coil windings are connected together in a Y-shaped mode through a central connection point and are led out of A, B, C three wires.

As shown in fig. 9, the BLDC mode of two-by-two energization specifically includes: in the BLDC driving circuit with two pairs of energization, the energization states of the three coil windings are controlled by the switching tubes Q0 to Q5, wherein the switching tube located above, i.e., connected to the positive terminal of the power supply, is the "upper bridge", and the switching tube located below, i.e., connected to the negative terminal of the power supply, is the "lower bridge", for example, if Q1 and Q4 are turned on, and the other switching tubes are turned off, the current flows from the positive terminal of the power supply back to the negative terminal of the power supply through Q1, the a-phase winding, the C-phase winding and Q4, the current flowing through the A, C-phase winding generates a magnetic field, the direction of the magnetic field is determined by the right hand to be parallel to the B-phase winding, and the first magnet of the rotating assembly rotates in the direction parallel to the magnetic field of the fixed assembly under the action of force, i.e., rotates to the position parallel to the B-phase winding, so that the rotating assembly is aligned to the north and south magnetic poles of the fixed assembly. Similarly, the flow direction of the current can be controlled by opening different combinations of the upper and lower bridge switching tubes, and magnetic fields in different directions are generated, so that the rotating assembly provided with the permanent magnet (first magnet) rotates to a specified position.

As shown in fig. 10, the sinusoidal three-phase FOC power-on driving method specifically includes: in the energization driving mode, when two energization modes are provided, there are 6 energization modes of AB, AC, BC, BA, CA, CB, for example, when the AB phase is energized, the direction of the resultant force of the direction of the magnetic induction line generated by the coil of the a pole in the fixed component and the direction of the magnetic induction line generated by the B pole is as indicated by the long arrow in the AB energization diagram of fig. 10, the rotating component provided with the permanent magnet (first magnet) can make the direction of the magnetic induction line in the inside of the rotating component consistent with the direction of the magnetic induction line of the fixed component as much as possible, the energization modes of the other phases such as AC, BC, BA, CA, CB are the same as the electrical principle of the AB phase, and the rotating component provided with the permanent magnet (first magnet) is rotated to the designated position by adjusting various two-phase energization combinations to generate magnetic fields in different directions.

In the invention, the current of the coil winding can be changed according to the needs of a user, and the torque of the coil winding and the rotating assembly can be changed, so that the blocking force and the promoting force are changed, and the sudden change rotating hand feeling which is more comfortable for the user is adjusted.

In the invention, the coil winding is electrified, and as shown in fig. 11, the same voltage and current can be always adopted, so that the abrupt change rotation hand feeling is strong; as shown in fig. 12, a gradually increasing or decreasing voltage current may also be used to make the abrupt rotation feel stronger or flatter.

According to the invention, by adjusting the electrifying direction of the coil winding, the force application change is increased when a user rotates the rotating piece for a preset stroke, so that a sudden change of rotating hand feeling is generated.

EXAMPLE six

As shown in fig. 13, the present invention also provides a controller of a knob, a stroke of the knob rotating from one shift position to the next shift position is a shift position stroke, the controller including:

a first position detecting module 71, configured to detect a rotation position and a rotation direction of the rotating member 20;

a first executing module 72, configured to energize the coil winding 43 when the rotating member 20 starts to rotate from one gear, so that the coil winding 43 gives a torque to the rotating member 20 in a direction opposite to the rotation direction, and blocks the rotation;

the second executing module 73 is configured to, when the rotating member 20 rotates by a preset stroke, switch the energization manner of the coil winding 43, so that the coil winding 43 gives a torque to the rotating member 20 in the same direction as the rotation direction, and promote the rotating member 20 to rotate to a next gear, where the preset stroke is smaller than one gear stroke.

In this embodiment, the first position detecting module 71 includes a position sensor, the rotation position and the rotation direction of the rotating member 20 can be detected by the position sensor, after the user starts to rotate the rotating member 20, the position sensor monitors the rotation position and the rotation direction of the rotating member 20 in real time, and after the rotating member 20 starts to rotate, and the time period from the rotation start of the rotating member 20 to the rotation of the rotating member 20 reaches the preset stroke, the first executing module 72 energizes the coil winding 43, so that the coil winding 43 imparts a torque to the rotating member 20 in the opposite direction to the rotation, thereby hindering the rotation, so that the user feels that it is difficult to rotate the rotating member 20, when the position sensor detects that the rotation of the rotating member 20 exceeds the preset stroke, at this time, the rotating member 20 rotates to the next gear position quickly, the second executing module 73 changes the energization direction of the coil winding 43, so that the coil winding 43 imparts a torque to the rotating member 20 in the same direction, the rotation of the rotating member 20 to the next gear is promoted, so that the user feels that it is relatively easy to rotate the rotating member 20, even without exerting force, the rotating member 20 is rotated to the next gear under the magnetic force of the coil winding 43, and the promoting force is changed by the blocking force at the preset stroke position, thereby generating a sudden change of rotating hand feeling.

EXAMPLE seven

As shown in fig. 14, the present invention also provides a method for controlling automatic rotation of a rotary knob, the rotary knob being provided with an initial gear and a plurality of operating gears, the method comprising:

detecting the rotating position and the rotating direction of the rotating piece;

and after the rotating member rotates to one working gear in a first direction, energizing the coil winding to enable the coil winding to give a torque in a second direction to the rotating member so as to drive the rotating member to rotate to the initial gear, wherein the first direction is opposite to the second direction.

The detection of the rotational position and the rotational direction of the rotary member may be achieved by a position sensor. The first and second directions refer to clockwise and counterclockwise directions. The first direction is opposite to the second direction, for example, the first direction is clockwise, that the second direction is counterclockwise, after the rotating member rotates to a gear in the clockwise direction, the rotating member may start to rotate from an initial gear, or start to rotate from other gears, the coil winding is energized, so that the coil winding gives a moment in the counterclockwise direction to the rotating member, and the rotating member is driven to rotate to the initial gear; or vice versa.

The rotating member rotating to one of the operating positions in the first direction specifically includes:

manually rotating the rotating member to rotate the rotating member in a first direction to one of the operating positions; or

And controlling the rotating member to rotate to one working gear in a first direction through the APP.

When using APP, set up wireless module on the knob for with APP communication, and, can detect the rotating position and the rotation direction of rotating member according to position sensor, the real-time position of synchronous display rotating member on APP.

The embodiment of the invention can realize the automatic rotation of the knob and can be widely used for timing setting, countdown and the like.

Example eight

As shown in fig. 15, an embodiment of the present invention further provides a controller for a knob, where the knob is provided with an initial gear and a plurality of operating gears, and the controller includes:

a second position detecting module 74, configured to detect a rotation position and a rotation direction of the rotating member 20;

a third executing module 75, configured to, after the rotating member 20 rotates to one of the operating gears in the first direction, energize the coil winding 43, so that the coil winding 43 imparts a torque to the rotating member 20 in a second direction, and drive the rotating member 20 to rotate to the initial gear, where the first direction is opposite to the second direction.

The second position detecting module 74 includes a position sensor, and when the second position detecting module 74 detects that the rotating member 20 rotates clockwise to a shift position, the rotating member may start rotating from an initial shift position, or start rotating in other shift positions, the third executing module 75 energizes the coil winding 43, so that the coil winding 43 applies a counterclockwise torque to the rotating member 20, and drives the rotating member 20 to rotate to the initial shift position.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.