TWM594795U - Separated magnetic induction knob - Google Patents

Abstract

This creation provides a separate knob used on electrical appliances. The knob can be detachably adsorbed on the surface of an electrical panel with a positioning magnet, including a positioning seat with a slip prevention part and a magnet on the bottom surface, and a combination above the positioning seat and A rotating cover that can rotate relative to the positioning seat. When the positioning base automatically finds the position and magnetically attracts the electrical panel, the anti-slip part is positioned on the surface of the electrical panel, so that the rotating cover can rotate steadily relative to the positioning base around the adsorption position without deviation; in addition, the separation The rotating cover of the magnetic induction knob can be tilted relative to the positioning seat to trigger the main control circuit, so that the rotating cover can be pressed in different directions to unlock or choose a function to prevent accidental touch, child safety lock, or multi-function options Operation, improve safety and convenience.

Description

Separate magnetic induction knob

This creation relates to a knob switch composed of the principle of magnetic induction. The knob can be separated magnetically attracted to the outer surface of the electrical panel, and the magnetic induction control is pressed and unlocked and rotated through the electrical panel and the main control circuit board. It is suitable for various output adjustments. For large and small appliances, such as gas flow adjustment of burning appliances, volume adjustment of audio equipment, or output power adjustment of household appliances such as microwave ovens, washing machines, electric stoves, and dryers, etc.

Household equipment such as burning appliances, audio equipment, microwave ovens, washing machines, electric heaters, clothes dryers, etc., the traditional way of turning on or adjusting the output and adjusting the output power is to use a mechanical knob for the user to manually rotate to adjust. These mechanical knobs need to be provided with a perforation on the panel of the device, so that the switch and the rotating shaft of the modulation element in the panel can be combined with the knob after passing out. Although this mechanical knob is more direct in operation and better in feel, if it is used in kitchens, laundry rooms and other appliances that are easily exposed to water and oil stains, household appliances such as washing machines, oil, water and moisture are likely to penetrate through the perforations around the shaft It causes leakage or damage to the control circuit. In addition, the rotating shaft and knob protrude from the panel and cannot be easily separated. It often causes a lot of dirt, oil stains and moisture that are not easy to wipe and clean, causing these appliances to be easily damaged.

Another common control system is to set a flat touch screen on the panel of the appliance, so that the device panel can be kept flat and easy to clean and wipe. But the design of the touch screen is to use the electrostatic capacitance of the finger to touch. Similarly, if it is used in kitchen and laundry equipment, it is inevitable that the hand will be attached to water or oil due to cooking food materials, resulting in the trouble of being unable to enter commands, and In order to overcome the problem of easy operation of the touch screen when wiping water and oil stains, the user must operate many programs that prevent incorrect input, such as anti-misoperation program and anti-child lock program. These cumbersome operations will cause the user to be unaccustomed, especially Some elderly people are mostly unable to adapt, even causing dangerous accidents such as misuse!

In related known technologies, the knobs that are detachably positioned on the panel by magnetic attraction have been disclosed by CN105261509A and CN109786165A. The principle is to install multiple Hall sensors on the main control circuit board under the electrical panel, and design the rotary switch as an independent component separated from the main control circuit board. The magnet can be adsorbed on the surface of the electrical panel. When rotating, the Hall sensor on the main control circuit board is used to sense the rotation angle and direction of the rotary switch, so that the electrical panel can be controlled without setting an opening or a touch screen, and the main control circuit The board is isolated from the outside environment and protected. When not in use, simply remove the rotary switch to make the flat electrical panel easy to wipe and clean.

The above-mentioned separate magnetic rotary knob switch can certainly protect the main control circuit board and is easy to wipe and clean. However, in actual operation, because the magnetic rotary knob switch is attracted to the panel by a plurality of magnets distributed around its circumference, it also needs to As the sensed component during rotation movement, when the magnetic rotary knob switch and the multiple magnets inside it are rotated and displaced synchronously, it will not only prevent the knob from rotating along the same circle center on the panel and easy to deflect, Hall feeling The sensor cannot accurately sense its rotation angle and direction.

In addition, the problem that the magnetic suction knob is easy to skew, especially when used in cooking appliances that require immediate adjustment of the size of the fire, even if the user carefully operates, the magnetic suction knob often still shifts, resulting in inconvenience of operation and inability to accurately control In some cases, it may even accidentally collide with the magnetic knob to make it move incorrectly and cause danger.

In view of the shortcomings of the prior art, the purpose of the present invention is to provide a separate magnetic induction knob, which is mainly provided with a first magnet at the bottom of the electrical panel as a reference point for positioning, and the design of the separate knob is divided into a positionable The positioning seat and a rotating cover. When the second magnet in the center of the positioning seat automatically finds the relative position of the first magnet and is adsorbed, the positioning seat can prevent slippage, allowing the rotating cover to rotate around the first and second magnets. There is no deviation, so that the main control circuit board can accurately sense the displacement stroke of the magnet on the rotating cover. It not only has the functions of protecting the main control circuit board and easy to wipe and clean the electrical panel, but also can achieve precise control and convenient operation. .

Another purpose of this creation is to provide a separable magnetic induction knob with a safety and selection mechanism that can be pressed. The separated magnetic induction knob can only trigger the power supply of the main control circuit of the appliance or choose to perform different functions after tilting or vertical pressing. Rotation induction can not only be used as a child safety lock mechanism to improve safety and prevent misoperation, but also can be used with various electrical appliances with multiple functional options in practical use.

Another purpose of this creation is that the second magnet on the knob can protrude up and down above the center of the bottom of the positioning seat. Before the positioning seat has not contacted with the electrical panel, it can prevent the anti-slip part at the bottom of the positioning seat from hindering the alignment, so that the first The two magnets can quickly find the suction position with the strongest magnetic attraction on the electrical panel, and then press the knob to make the anti-slip part at the bottom of the positioning seat contact the electrical panel to stop the sliding, thereby achieving the purpose of convenient use.

In order to achieve the above purpose, the present invention provides a separate magnetic induction knob, which can be magnetically attracted to the surface of the electrical panel separately. The inner side of the electrical panel is provided with a main control circuit board and a suction position can be formed on the external surface of the electrical panel The first magnet and a plurality of magnetic induction elements arranged at intervals around the outside of the first magnet are characterized by:

The knob includes a positioning seat provided with a second magnet in the center, and the bottom surface of the positioning seat is provided with an anti-slip part. The positioning seat can be detachably adsorbed on the suction position of the electrical panel through the second magnet, and through the The anti-slip part is in contact with the surface of the electrical panel to prevent slippage, so that the positioning seat can be positioned on the surface of the electrical panel without offset; and

A rotating cover capable of being relatively rotatably sleeved on the top of the positioning seat, the rotating cover is provided with a plurality of magnets or a ring-shaped magnet at a peripheral position of the second magnet relative to the positioning seat, so that the plurality of magnets or the ring-shaped magnet The magnet can rotate relative to the positioning base around the suction position to change the magnetic field angle, so that the plurality of magnetic sensing elements can accurately sense the rotation stroke of each magnet or ring magnet through the electrical panel.

With the above structure, since the original design further designs the knob as a positioning seat that can be positioned to prevent slippage, and a rotating cover that can rotate relative to the positioning seat, when the user rotates the rotating cover, it can be fixed The suction position of the center rotates without deviation, so that the magnetic induction element on the electrical appliance can accurately sense the magnet or ring magnet on the rotating cover The displacement stroke achieves the purpose of precise control and convenient operation.

This creation also provides a separate magnetic induction knob, which can be magnetically attracted to the surface of the electrical panel. The inner side of the electrical panel is provided with a main control circuit board and a first magnet capable of forming a suction position on the external surface of the electrical panel And a plurality of magnetic induction elements arranged at intervals around the first magnet, characterized by:

The knob includes a positioning seat provided with a second magnet in the center, and the bottom surface of the positioning seat is provided with an anti-slip part. The positioning seat can be attracted to the suction position on the electrical panel through the second magnet and through the anti-slip part Contact with the surface of the electrical panel to prevent slippage, so that the positioning seat is positioned on the surface of the electrical panel;

A rotating cover capable of being relatively rotatably sleeved on the top of the positioning seat, the rotating cover is provided with a plurality of magnets or a ring-shaped magnet at a peripheral position of the second magnet relative to the positioning seat, so that the plurality of magnets or the ring-shaped magnet The magnet can rotate relative to the positioning base with the suction position as the center to change the magnetic field angle;

An elastic component is provided between the top surface of the positioning seat and the bottom surface of the rotating cover, so that the rotating cover can be pressed to move axially relative to the positioning seat, or the periphery of the rotating cover is pressed at different positions Skew; and

The plurality of magnetic sensing elements includes at least one magnetic trigger switch that can be triggered when the rotating cover is pressed to move or deflect axially to change the magnetic field strength of each magnet or ring magnet, and a plurality of magnetic trigger switches that can detect the rotating cover Hall sensor in which the angle and direction of the magnetic field change when each magnet or ring magnet rotates and displaces.

The above-mentioned rotating cover is designed to be tilted or pressed axially before it can trigger the main control circuit power supply of the appliance or choose to perform different functions. Afterwards, the rotation induction can be used, which can not only be used as a child safety lock mechanism, improve safety and prevent misoperation, It can also be used with various electrical appliances with multiple functional options in practical use.

The following further describes the implementation of each element:

In practice, when there are a plurality of magnetic trigger switches, and any one of the positions around the rotating cover is deflected, one of the magnets or ring magnets at that position is deflected One of the magnetic trigger switches at the corresponding position in the switch is triggered.

In practice, the elastic component includes a spring arranged on the top of the positioning seat and a bearing disc with a plurality of balls on the top surface, the bottom of the bearing disc receives the elastic support of the spring, so that the plurality of balls press upward against the Rotating the bottom surface of the cover can reduce the friction between each other when the rotating cover rotates.

In practice, a limit post extending upwards is provided on both sides of the top surface of the positioning seat, and a limit hole is provided at the opposite positions on both sides of the bearing plate. The top of the limit post passes upward through the limit hole and is provided with a A stopper with an outer diameter greater than the limit hole.

In practice, the anti-slip portion includes but is not limited to a plurality of suction cups, anti-slip rubber or self-adhesive soft silicone provided on the bottom surface of the positioning seat.

In practice, the positioning seat is circular, and a guide ring protruding upward is extended along the outer periphery of the person, the rotating cover is circular with an outer diameter greater than the positioning seat, and a plurality of magnets or the ring is provided on the outer periphery An outer ring accommodating part fixed by a magnet, a set of swivel rings arranged around the guide ring extending downward around the outer ring accommodating part, and when the positioning seat is adsorbed at the adsorption position on the electrical panel, the turn The ring has a distance from the surface of the electrical panel.

In practice, the second magnet is vertically movable in the center of the positioning seat. When the anti-slip part is away from the surface of the electrical panel, the bottom of the second magnet protrudes below the anti-slip part at the bottom of the positioning seat.

In practice, the positioning seat has a bottom plate, a hole is provided in the center of the bottom plate, and a first magnetic ring is provided around the hole; the second magnet is accommodated and fixed on a sleeve, and the positioning seat and rotation are located above the sleeve Between the cover, there is a second magnetic ring, the bottom of the sleeve is located under the positioning seat, and a limit ring is provided, the outer diameter of the second magnetic ring and the limit ring are larger than the perforation, so that the sleeve And the second magnet is restrained within the perforation to move up and down; and

When the second magnet is magnetically away from the suction position, the second magnetic ring and the first magnetic ring are aligned to attract each other, so that the bottom of the second magnet protrudes below the anti-slip portion at the bottom of the positioning seat; the second magnet After the bottom magnetic attraction is positioned on the electric appliance panel, and after the anti-slip part contacts the electric appliance panel, the second magnet is held upward and displaced relative to the positioning seat, so that the second magnetic attraction ring is away from the first magnetic attraction ring.

Compared with the previous technology, this design divides the design of the split knob into a positioning seat and a rotating cover. When the magnet in the center of the positioning seat automatically finds the suction position and attracts the electrical panel, the bottom surface of the positioning seat is used. The anti-slip design allows the rotating cover to rotate around the suction position without being offset, thereby enabling the main control circuit board to accurately sense the displacement stroke of the magnet on the rotating cover, achieving precise control and convenient operation.

It is worth mentioning that, because the separation knob is magnetically attracted to the electrical panel, in order to prevent the separation knob from being collided and malfunctioning, this creation designed the magnetic induction element as a magnetic trigger switch that can be triggered when the magnetic field strength changes , And a Hall sensor that can detect the change of the magnetic field angle and direction when the magnet is displaced, and an elastic component is provided between the positioning base and the rotating cover, so that the rotating cover can also move axially or be skewed in addition to rotation The setting is on the positioning seat.

In this way, when the user wants to operate the rotating cover, he can first press the rotating cover to move it axially or skewly close to the electrical panel, so that the magnetic trigger switch is triggered to wake up the main control circuit board to operate or perform function selection , To achieve the effect of preventing misoperation and multi-function selection. This mechanism, which can be operated or selected by rotating after pressing the rotating cover, can also be used as a child safety lock or a multi-function switch, especially suitable for use in gas stoves with safety considerations or electrical equipment with many different functional options.

The following lists the implementation methods suitable for this creation based on the technical means of this creation, and the following description with the drawings:

100‧‧‧Electrical panel

101‧‧‧Adsorption position

200‧‧‧Main control circuit board

201‧‧‧First magnet

202‧‧‧ magnetic induction element

202a‧‧‧Magnetic trigger switch

202b‧‧‧Hall sensor

300‧‧‧ knob

400‧‧‧gas stove

10‧‧‧Positioning seat

11‧‧‧Second magnet

111‧‧‧Perforation

112‧‧‧First magnetic ring

113‧‧‧Sleeve

114‧‧‧The second magnetic ring

115‧‧‧Limit ring

12‧‧‧ Anti-slip part

12a‧‧‧Sucker

12b‧‧‧ Anti-slip rubber or soft silicone with self-adhesive

13‧‧‧Guide ring

14‧‧‧Limit post

20‧‧‧Rotary cover

21‧‧‧Magnet

21a‧‧‧ring magnet

22‧‧‧Outer ring accommodating department

23‧‧‧ Swivel

30‧‧‧Elastic components

31‧‧‧Spring

32‧‧‧ball

33‧‧‧ bearing disc

34‧‧‧Limit hole

35‧‧‧stop piece

The first picture: schematic diagram of the installation location of this creation.

The second picture: a three-dimensional exploded view of the creative knob.

The third picture: the schematic diagram of the combination of the creative knob magnetically attracted in front of the electrical panel.

The fourth picture: a partially enlarged view of the third picture.

Fifth picture: The schematic diagram of the combination of the creative knob magnetically attracted to the electrical panel.

Figure 6: Schematic diagram of the action of the creative knob pressing on the electrical panel to position and stop.

Figure 7: Partially enlarged view of Figure 6.

The eighth picture: The schematic diagram of the creation of the rotating cover relative to the positioning seat anti-slip rotation.

The ninth picture: the schematic diagram of the deflection of the rotating cover of the creation relative to the positioning seat.

Figure 10: Schematic diagram of the implementation of the magnetic induction element.

Figure 11: Schematic diagram of the implementation of the ring magnet in the knob.

As shown in the first to third figures, the original split magnetic induction knob includes: a main control circuit board 200 fixed inside the electrical panel 100, and a knob 300 detachably provided at a relative position outside the electrical panel 100, Wherein, a first magnet 201 capable of forming a suction position 101 on the outer surface of the electrical panel 100 is provided inside the main control circuit board 200 or the electrical panel 100, and a plurality of magnetic induction elements 202 are provided on the main control circuit board 200 The plurality of magnetic induction elements 202 are arranged at intervals on the outer periphery relative to the first magnet 201; in the first figure, the electrical panel 100 is a control panel of a gas cooker 400, and the first magnet 201 is disposed on the main control On the circuit board 200, it is convenient for the magnetic sensing elements 202 to be arranged around it.

As shown in the second to ninth figures, the knob 300 includes a positioning seat 10 and a rotating cover 20 disposed on the top of the positioning seat 10 and capable of relatively rotating. Wherein, a second magnet 11 is provided in the center of the positioning base 10, so that the positioning base 10 can be detachably adsorbed on the suction position of the electrical panel 100 by the mutual magnetic attraction of the second magnet 11 and the first magnet 201 101, and can automatically find the suction position 101 with the strongest suction force formed on the electrical panel 100 relative to the first magnet 201 during suction. In addition, the bottom surface of the positioning base 10 is provided with an anti-slip portion 12. When the positioning base 10 is attracted to the suction position 101 on the electrical panel 100 through the second magnet 11, the anti-slip portion 12 can contact the surface of the electrical panel 100 The anti-slip feature enables the positioning base 10 to be positioned on the surface of the electrical panel 100 without offset.

In the illustration, the anti-slip portion 12 is a plurality of suction cups 12a fixed and protruding from the bottom of the positioning seat 10, or the bottom surface of the positioning seat 10 is provided with anti-slip rubber or self-adhesive soft silicone rubber 12b, or the positioning seat 10 Directly integrated with elastic anti-slip rubber or soft silicone material. On the one hand, the elasticity allows the knob 300 to be easily pressed and reset, on the other hand, it can prevent slip.

In order that the anti-slip portion 12 protruding or provided at the bottom of the positioning base 10 does not hinder the second magnet 11 of the positioning base 10 from automatically looking for the suction position 101, the second magnet 11 is disposed in the center of the positioning base 10 so as to be movable up and down .

As shown in the second and third figures, during implementation, the positioning base 10 has a bottom plate, a through hole 111 is provided in the center of the bottom plate, a first magnetic ring 112 is provided around the through hole 111, and the second magnet 11 is accommodated and fixed in a through hole It is provided on a sleeve 113 which can move up and down in the through hole 111. The sleeve 113 is located between the positioning seat 10 and the rotating cover 20 above, and is provided with a second magnetic ring 114, and the bottom of the sleeve 113 is located below the positioning seat 10. Furthermore, a limiting ring 115 is provided, and the outer diameters of the second magnetic ring 114 and the limiting ring 115 are larger than the through holes 111 respectively, so that the sleeve 113 and the second magnet 11 are limited to the through holes 111 to move up and down Inside, it will not fall out of the positioning base 10 or be embedded between the positioning base 10 and the rotating cover 20 upward.

As shown in the third to fifth figures, the illustrated stop-slip portion 12 uses the suction cup 12a as an example. When the positioning base 10 has not been attracted to the suction position 101 on the electrical panel 100, the second magnet 11 is away from the suction At position 101, the second magnet 11 protrudes below the bottom of the positioning base 10 due to gravity, so that the second magnetic ring 114 and the first magnetic ring 112 are aligned and attract each other to maintain the position. Before the positioning base 10 is adsorbed on the electrical panel 100, the suction cup 12a can be prevented from contacting the electrical panel 100 first, which prevents the second magnet 11 from looking for the adsorption position 101, so that the second magnet 11 can be automatically adsorbed on the adsorption position 101 quickly and accurately .

As shown in the fifth to seventh figures, when the positioning base 10 is magnetically attracted to the electrical panel 100, the positioning base 10 is pressed down to cause the air between the suction cup 12a and the electrical panel 100 to be exhausted to produce negative pressure, or to stop Sliding rubber or self-adhesive soft silicone rubber 12b is attached to the surface of the electrical panel 100 to allow the positioning base 10 to be positioned on the electrical panel 100 to prevent slippage. At the same time, the second magnet 11 is positioned on the electrical panel 100 due to the magnetic attraction at the bottom. Therefore, when the positioning base 10 is pressed down, the second magnet 11 is simultaneously held and displaced relatively upward, releasing the second magnetic attraction ring 114 and the first magnetic attraction The attraction state of the rings 112 to each other, while being blocked by the limit ring 115, prevents the second magnet 11 and the sleeve 113 from being inserted upward between the positioning seat 10 and the rotating cover 20.

Whether it is a suction cup 12a, anti-slip rubber, or self-adhesive soft silicone 12b or a second Whether the bottom of the magnet 11 protrudes from the bottom surface of the positioning base 10, before being pressed and attracted, the magnet can automatically find and attract the strongest position of the magnetic attraction, which is conducive to the positioning base 10 of the knob 300 to automatically find the attracting position on the electrical panel 100 And counterpoint. When you do not need to use the knob 300 or want to clean the electrical panel 100, just apply a slight force in the opposite direction to overcome the negative pressure generated by the suction cup 12a, or the viscosity of the anti-slip rubber or the self-adhesive soft silicone rubber 12b. The positioning base 10 and the entire knob 300 are separated from the electrical panel 100.

During the process of detaching the bottom of the positioning base 10 from the electrical panel 100, since the second magnet 11 continues to be attracted to the suction position 101, the second magnet 11 moves downward relative to the positioning base 10, and the second magnet 11 detaches After the suction position 101, the gravity of the second magnet 11 and the magnetic attraction force between the second magnetic attraction ring 114 and the first magnetic attraction ring 112 attract each other to make the second magnet 11 protrude below the bottom of the positioning base 10 again. Return to the state as shown in the third figure to facilitate the next use, the second magnet 11 of the positioning base 10 automatically locates the suction position 101 for accurate positioning, and is not affected by the suction cup 12a or anti-slip rubber or its own soft sticky Obstructed by silicone 12b.

As shown in the second, third, and fifth figures, the rotating cover 20 is provided with a plurality of magnets 21 at a peripheral position relative to the second magnet 11 of the positioning base 10. In the illustration, the positioning base 10 is circular, and a guide ring 13 protruding upward is provided on the outer periphery thereof, the rotating cover 20 is circular with an outer diameter larger than the positioning base 10, and a plurality of magnets are provided on the outer periphery 21 The outer ring accommodating portion 22 with a fixed interval, and a swivel ring 23 disposed around the guide ring 13 extends downward from the bottom of the outer ring accommodating portion 22, so that the positioning seat 10 is attracted to the electrical panel 100 and rotates The cover 20 can be rotated in a circle relative to the positioning seat 10 by the guide of the rotating ring 23 along the guide ring 13.

As shown in the eighth figure, when the second magnet 11 in the center of the positioning base 10 is attracted to the suction position 101 on the electrical panel 100, the anti-slip design of the anti-slip portion 12 on the bottom surface of the positioning base 10 is used to allow the The magnet 21 can rotate around the first magnet 201, the second magnet 11 and the suction position 101 in a circle without deviation, and at the same time, the magnetic induction element 202 of the main control circuit board 200 can accurately sense the magnet 21 on the rotary cover 20 The displacement stroke and angle of the machine overcome the previous technology, the knob cannot rotate along the same circle center on the panel and is easy to deflect, Hall The sensor is also unable to accurately sense the rotation angle and direction of the problem, achieving precise control and easy operation.

As shown in the second and sixth to ninth figures, another feature of this creation is to provide a separate magnetic induction knob that can be tilted or pressed vertically to trigger the main control circuit board. As shown in the figure, when the positioning base 10 is attracted to the suction position 101 on the electrical panel 100, there is a gap between the outer periphery of the rotary cover 20 and the surface of the electrical panel 100. This gap not only allows the rotary cover 20 It does not touch the surface of the electrical panel 100 when rotating, and can also be used as an auxiliary design of the safety mechanism.

In a specific implementation, an elastic component 30 is provided between the top surface of the positioning base 10 and the bottom surface of the rotating cover 20. The elastic component 30 includes a spring 31 disposed on the top of the positioning base 10 and a bearing provided with a plurality of balls 32 on the top surface Disk 33, the bottom of the bearing disk 33 receives the elastic support of the spring 31, so that the plurality of balls 32 push up against the bottom surface of the rotating cover 20, so that the rotating cover 20 can be moved axially or can be biased sleeve The setting position is on the positioning seat 10. When the rotating cover 20 rotates relative to the positioning base 10, the ball 32 can roll to reduce the friction between the rotating cover 20 and the bearing plate 33.

When the user presses the rotary cover 20, on the one hand, the suction cup 12a can be firmly positioned on the electrical panel 100, and on the other hand, the plurality of magnets 21 around the rotary cover 20 and the magnetic induction element 202 of the main control circuit board 200 can be changed The distance between them, which in turn changes the strength of the magnetic field between the two. As shown in the sixth to ninth figures, the sixth figure reveals the state in which the entire rotary cover 20 is axially displaced relative to the positioning base 10 after being pressed, and the ninth figure reveals that the rotary cover 20 is inclined relative to the positioning base 10 after being pressed status.

When the rotating cover 20 is pressed, the distance between the magnet 21 and the magnetic sensing element 202 of the main control circuit board 200 can be changed, thereby changing the magnetic field strength between the two. Its main purpose is to be used as a safety mechanism or as a multi-function choice Function. As shown in the tenth figure, during implementation, the magnetic sensing element on the main control circuit board 200 further includes at least one magnetic trigger switch 202a that can be triggered when the magnetic field strength of each magnet 21 of the rotating cover 20 changes, and a plurality of detectable switches Hall sensor for measuring change of magnetic field angle and direction when each magnet 21 of the rotating cover 20 rotates and displaces 202b.

The Hall sensor 202b can sense the change of the magnetic field angle and direction when each magnet 21 rotates and displaces, so that the main control circuit board 200 can send corresponding adjustment control commands accordingly, for example, when used in a gas cooker Control the output power when in the microwave. The magnetic trigger switch 202a, such as a reed switch or a magnetic proximity switch, is characterized in that the power can only be turned on after the magnetic field strength reaches the set strength.

According to this, when the user presses the axial displacement of the rotary cover 20 (figure 6), or the rotary cover 20 is pressed at any position on the circumference according to the setting, the rotary cover 20 can be deflected at that position (figure 9) ), and then bring all or part of the magnet 21 close to and trigger the magnetic trigger switch 202a, and then let the Hall sensor 202b of the main control circuit board 200 start to detect the rotation angle and direction of the magnet 21 of the rotary cover 20.

In this way, before the user rotates the rotating cover 20, the user can first press the rotating cover 20 to move it axially or deflect a certain part close to the electrical panel 100, so that the magnetic trigger switch 202a is triggered to wake up the main control When the circuit board 200 is operated, or when the tilt is pressed, the magnetic trigger switch 202a in the part is triggered to perform a specified function, thereby achieving the function of preventing malfunction or selecting a function; The operation or selection mechanism can also be used as a child safety lock or a multi-function switch, which is particularly suitable for use in gas stoves with safety considerations or electrical equipment with many different functional options.

Of course, pressing the rotating cover 20 to move it axially or deflect it close to the electrical panel 100 may be performed simultaneously or separately. For example, the circuit of the main control circuit board 200 is designed to start operation after the magnetic trigger switch 202a is triggered once. At this time, the magnetic trigger switch 202a can be awakened by pressing the rotating cover 20 at a specific position to wake up the main control circuit board 200 works. For another example, the circuit design of the main control circuit board 200 is such that the magnetic trigger switch 202a must remain triggered and remain energized to operate. At this time, the user must continue to press the rotating cover 20 while rotating, so that the main control circuit board 200 can continue to complete the magnetic field angle Detect. For another example, the rotating cover 20 needs to be deflected at a specific position to wake up the operation of the main control circuit board 200, and then the user must continue to press the rotating cover 20 while rotating, so that the main control circuit board 200 can continue to complete the magnetic field angle detection.

It is particularly worth mentioning that the method of tilting and pressing the rotating cover 20 can be applied to electrical appliances with multi-functional options. For example: the defrosting and heating functions of the microwave oven; the washing, drying, and dehydration functions of the washing machine; the choice of the left and right stove ports of the double-burner gas stove or induction cooker; the theater mode and home mode selection of the audio equipment; the preset of different ingredients for the electric oven grill Temperature selection, etc. When the aforementioned user presses a part of the front, back, left, or right of the rotating cover 20, the magnet 21 at that position can be brought closer to the electrical panel 100 and the main control circuit board 200, and the magnetic trigger switch 202a at the part is triggered , And then let the main control circuit board 200 perform the selected function, or as a child safety lock.

In this way, the knob 300 not only has a detachable rotary adjustment function, but also can be used as a child safety lock or a multi-function switch, especially suitable for use in gas stoves with safety considerations, or electrical equipment with many different functional options on. It should be noted that, whether it is a one-time trigger or continuous pressing, or both, the user only needs to press the rotating cover 20 to complete the use, which is quite convenient in use and does not require complicated unlocking procedures.

As shown in the second, sixth, and eighth figures, in order to facilitate the mounting of the bearing plate 33 and the rotating cover 20 on the positioning seat 10, and to allow the rotating cover 20 to smoothly rotate, when implemented, the top surface of the positioning seat 10 A limit post 14 extending upward is provided on both sides, and a limit hole 34 is provided at the opposite positions of the bearing disc 33 at both sides. The top of the limit post 14 passes upward through the limit hole 34 and is provided with an outer diameter greater than The stop piece 35 of the limiting hole 34.

When the stopper 35 stops above the bearing disc 33, when the spring 31 is pushed up against the bearing disc 33, the maximum height of the upward displacement of the bearing disc 33 can be limited by the stopper 35, which is beneficial to the bearing disc 33 and The installation of the rotating cover 20, while the limit post 14 restricts the bearing disc 33 to only be axially displaced or skewed, but not to move radially. When the rotating cover 20 rotates, the bearing disc 33 will not deflect, and the ball 32 reduces the friction force when the rotating cover 20 and the bearing disk 33 rotate relatively, so that the rotating cover 20 operates smoothly.

As shown in the tenth and eleventh figures, when a plurality of magnets 21 arranged in a ring interval are implemented, a multi-pole ring magnet 21a can also be used instead, and the Hall sensor can also be achieved when rotating or pressing 202b senses the rotation angle or triggers. Which about Huo The way in which the sensor 202b senses the rotation angle and direction can be achieved by the arrangement of the magnetic poles of the plurality of magnets 21 or the multi-pole ring-shaped magnet 21a.

For example, the arrangement of the magnetic poles of a plurality of magnets 21 or the multi-pole ring magnet 21a is SNNN. With different readings of three N poles and one S pole, the Hall sensor 202b can sense the initial position of the S pole , And when the Hall sensor 202b produces a change of 1-0, 1-0... reading value, not only can the rotation angle of the rotating cover 20 be read, but also the difference between the displacement of 3 N poles and one S pole can be used Reading the value allows the Hall sensor 202b to sense the direction of rotation of the S pole, and then recognizes whether the rotating cover 20 rotates clockwise or counterclockwise.

The descriptions and illustrations of the above implementations are only examples of preferred examples of the creation, and are not intended to limit the creation; those who are similar or similar in structure, device, and characteristics to the creation shall belong to the creation. The scope of protection is hereby declared.

300‧‧‧ knob

10‧‧‧Positioning seat

11‧‧‧Second magnet

111‧‧‧Perforation

112‧‧‧First magnetic ring

113‧‧‧Sleeve

114‧‧‧The second magnetic ring

115‧‧‧Limit ring

12‧‧‧ Anti-slip part

12a‧‧‧Sucker

13‧‧‧Guide ring

14‧‧‧Limit post

20‧‧‧Rotary cover

21‧‧‧Magnet

23‧‧‧ Swivel

30‧‧‧Elastic components

31‧‧‧Spring

32‧‧‧ball

33‧‧‧ bearing disc

34‧‧‧Limit hole

35‧‧‧stop piece

Claims (9)

A separate magnetic induction knob, which can be magnetically attracted to the surface of an electric appliance panel. The inner side of the electric appliance panel is provided with a main control circuit board, a first magnet capable of forming an attracting position on the outer surface of the electric appliance panel, and a plurality of The magnetic induction elements arranged at intervals around the outer periphery of the first magnet are characterized by: The knob includes a positioning seat provided with a second magnet in the center, and the bottom surface of the positioning seat is provided with an anti-slip part. The positioning seat can be detachably adsorbed on the suction position of the electrical panel through the second magnet, and through the The anti-slip part is in contact with the surface of the electrical panel to prevent slippage, so that the positioning seat can be positioned on the surface of the electrical panel without offset; and A rotating cover capable of being relatively rotatably sleeved on the top of the positioning seat, the rotating cover is provided with a plurality of magnets or a ring-shaped magnet at a peripheral position of the second magnet relative to the positioning seat, so that the plurality of magnets or the ring-shaped magnet The magnet can rotate relative to the positioning base around the suction position to change the magnetic field angle, so that the plurality of magnetic sensing elements can accurately sense the rotation stroke of each magnet or ring magnet through the electrical panel. A separate magnetic induction knob, which can be magnetically attracted to the surface of an electric appliance panel. The inner side of the electric appliance panel is provided with a main control circuit board, a first magnet capable of forming an attracting position on the outer surface of the electric appliance panel, and a plurality of The magnetic induction elements arranged at intervals around the outer periphery of the first magnet are characterized by: The knob includes a positioning seat provided with a second magnet in the center, and the bottom surface of the positioning seat is provided with an anti-slip part. The positioning seat can be attracted to the suction position on the electrical panel through the second magnet and through the anti-slip part Contact with the surface of the electrical panel to prevent slippage, so that the positioning seat is positioned on the surface of the electrical panel; A rotating cover capable of being relatively rotatably sleeved on the top of the positioning seat, the rotating cover is provided with a plurality of magnets or a ring-shaped magnet at a peripheral position of the second magnet relative to the positioning seat, so that the plurality of magnets or the ring-shaped magnet The magnet can rotate relative to the positioning base with the suction position as the center to change the magnetic field angle; An elastic component is provided between the top surface of the positioning seat and the bottom surface of the rotating cover, so that the rotating cover can be pressed to move axially relative to the positioning seat, or the periphery of the rotating cover is pressed at different positions Skew; and The plurality of magnetic sensing elements includes at least one magnetic trigger switch that can be triggered when the rotating cover is pressed to move or deflect axially to change the magnetic field strength of each magnet or ring magnet, and a plurality of magnetic trigger switches that can detect the rotating cover Hall sensor in which the angle and direction of the magnetic field change when each magnet or ring magnet rotates and displaces. The separate magnetic induction knob according to claim 2, characterized in that: there are a plurality of magnetic trigger switches, and when any position around the rotating cover is deflected, one of the magnets or ring magnets at that position is deflected, One of the magnetic trigger switches at the corresponding position in the plurality of magnetic trigger switches is triggered. The separate magnetic induction knob according to claim 3, characterized in that the elastic component comprises a spring arranged on the top of the positioning seat and a bearing disc provided with a plurality of balls on the top surface, and the bottom of the bearing disc receives the elasticity of the spring Pressing and holding the plurality of balls upward against the bottom surface of the rotating cover can reduce the friction between each other when the rotating cover rotates. The separate magnetic induction knob according to claim 4, wherein the positioning seat is provided with a limit post extending upwards on both sides of the top surface of the positioning seat, and a limit hole is provided at the opposite positions on both sides of the bearing plate. The top of the column passes upward through the limit hole, and a stopper with an outer diameter greater than the limit hole is provided. The separated magnetic induction knob according to any one of claims 1 to 5, wherein the anti-slip portion includes but is not limited to a plurality of suction cups, anti-slip rubber or self-adhesive ones provided on the bottom surface of the positioning seat Soft silicone. The separate magnetic induction knob according to any one of claims 1 to 5, characterized in that: the positioning seat is circular, and a guide ring protruding upward is extended along the outer circumference of the person, and the outer diameter of the rotating cover is greater than The circular shape of the positioning seat is provided with an outer ring accommodating portion for fixing a plurality of magnets or the ring magnet on the outer periphery. The outer ring accommodating portion extends downward and is set around the guide ring When the surrounding swivel ring and the positioning seat are adsorbed on the adsorption position on the electrical panel, the swivel ring has a distance from the surface of the electrical panel. The separate magnetic induction knob according to any one of claims 1 to 5, characterized in that: the second magnet is movably arranged in the center of the positioning seat, and when the anti-slip part is away from the surface of the electrical panel, the first The bottom of the two magnets protrudes below the anti-slip part at the bottom of the positioning seat. The detachable magnetic induction knob according to claim 8, characterized in that: the positioning base has a bottom plate, a perforation is provided in the center of the bottom plate, and a first magnetic ring is provided around the perforation; On the sleeve, the sleeve is located between the positioning seat and the rotating cover, and is provided with a second magnetic ring, the bottom of the sleeve is located below the positioning seat, and a limit ring is provided, the second magnetic ring and the limit The outer diameter of the bit ring is larger than the perforation, so that the sleeve and the second magnet are restricted to move in the perforation up and down; and When the second magnet is magnetically away from the suction position, the second magnetic ring and the first magnetic ring are aligned to attract each other, so that the bottom of the second magnet protrudes below the anti-slip portion at the bottom of the positioning seat; the second magnet After the bottom magnetic attraction is positioned on the electric appliance panel, and after the anti-slip part contacts the electric appliance panel, the second magnet is held upward and displaced relative to the positioning seat, so that the second magnetic attraction ring is away from the first magnetic attraction ring.

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