Knob and electrical device

Abstract

The present invention is applicable to the field of adjusting knobs, and provides a knob and an electrical device, the knob comprising a fixed component and a rotating component which are arranged relatively and separately; the rotating component comprises a rotating part and N first magnets, and the polarities of two adjacent first magnets are opposite; the fixed component comprises a fixed part and a magnetic column. The rotating component of the embodiment of the present invention is arranged relatively and separately from the fixed component, and the rotating component and the fixed component can be adsorbed on the glass panel by the magnetic attraction between the first magnet and the magnetic column, without drilling holes on the glass panel. Since the polarities of the two adjacent first magnets on the rotating part are opposite, the magnetic column will suddenly change its magnetic circuit direction under the sequential action of the two adjacent first magnets with opposite polarities, so that the magnetic direction of the magnetic column to the next first magnet can be changed from the original direction to the opposite direction, thereby producing a sudden rotation feel and improving the user experience.

Description

Technical Field

[0001] The invention belongs to the field of regulating knobs, and in particular relates to a knob and an electrical device. Background Art

[0002] The induction cooker, also known as the electromagnetic stove, is the product of the modern kitchen revolution. It does not require open flames or conductive heating but generates heat directly at the bottom of the pot, thus greatly improving the thermal efficiency.

[0003] At present, some of the switches of induction cookers use touch switches, while others use coded knob switches. The coded knob switch drives the coding switch to rotate together by rotating the knob, changing the resistance value connected in the circuit, thereby generating different voltage division values. The voltage division value is then read by the microcontroller unit MCU of the induction cooker, and different gears are obtained according to the size of the voltage division value.

[0004] like Figure 1 As shown, the existing coded knob electromagnetic cooker drives the coding switch 2 set on the circuit board 5 to rotate through the knob 1, so the knob 1 and the coding switch 2 are connected together, and a through hole 4 needs to be opened in the glass panel 3 of the electromagnetic cooker. The knob 1 is connected to the coding switch 2 through the through hole 4, but the opening of the glass panel 3 has the following problems:

[0005] First, it increases the number of processes for producing glass panels, resulting in a higher defect rate for processed products and increased production costs;

[0006] Second, the mechanical strength of the glass panel decreases;

[0007] Third, the sealing of the glass panel of the induction cooker is poor, and it is necessary to add a waterproof design to the glass panel with holes, which increases the production cost. Summary of the invention

[0008] The invention provides a knob, aiming to solve the problem that the existing knob needs to be used in opening a hole in a glass panel.

[0009] The present invention is implemented as follows: a knob comprises a fixed component and a rotating component which are arranged relatively and separately, and the rotating component can rotate relative to the fixed component;

[0010] The rotating assembly comprises a rotating member and N first magnets, wherein the N first magnets are uniformly arranged on the rotating member in a circumferential direction, and two adjacent first magnets have opposite polarities, wherein N≥2, and N is a positive even number;

[0011] The fixing assembly includes a fixing part and Y magnetic conductive pillars with their top ends facing the rotating part, the Y magnetic conductive pillars are evenly distributed circumferentially on the fixing part and correspond to the circumference where the N first magnets are located, wherein Y>N, Y is a positive integer and a multiple of 3.

[0012] Furthermore, a connecting ring is provided on a side of the fixing member facing the rotating member, and the bottom ends of the Y magnetic conductive columns are connected to the connecting ring.

[0013] Furthermore, the connecting ring and the Y magnetic conductive pillars are integrally formed.

[0014] Furthermore, the first magnet is arranged on a side of the rotating member facing the fixed member.

[0015] Furthermore, a first cavity for accommodating the first magnet is provided on a side of the rotating member facing the fixed member.

[0016] Furthermore, a second magnet is provided in the middle of the fixing member;

[0017] A third magnet corresponding to the second magnet is arranged in the middle of the rotating member, and the third magnet has a polarity opposite to that of the second magnet.

[0018] Furthermore, a second concave cavity for accommodating the second magnet is provided in the middle of a side of the fixed member facing the rotating member, and a third concave cavity for accommodating the third magnet is provided in the middle of a side of the rotating member facing the fixed member.

[0019] Furthermore, a first boss is arranged in the middle of one side of the fixed member facing the rotating member, the second cavity is arranged on the top of the first boss, a second boss is arranged in the middle of one side of the rotating member facing the fixed member, and the third cavity is arranged on the top of the second boss.

[0020] The present invention also provides an electrical device, comprising a device body, a glass plate and the above-mentioned knob, wherein the glass plate is arranged on the device body, the fixing 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.

[0021] The rotating component and the fixed component of the embodiment of the present invention are arranged opposite to and separately, and the rotating component and the fixed component can be arranged on both sides of the glass panel. The rotating component and the fixed component are adsorbed on the glass panel by the magnetic attraction between the first magnet and the magnetic pole, and there is no need to drill holes in the glass panel. When the user rotates the rotating component to make the next first magnet approach the magnetic pole, since the polarities of the two adjacent first magnets on the rotating member are opposite, the magnetic circuit direction of the magnetic pole will suddenly change under the sequential action of the two adjacent first magnets with opposite polarities, so that the magnetic direction of the magnetic pole to the next first magnet can be changed from the original direction to the opposite direction, thereby producing a sudden rotation feel and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a stereogram of a coding knob provided by the prior art;

[0023] Figure 2 It is a stereogram provided by the present invention;

[0024] Figure 3 It is an exploded diagram provided by the present invention;

[0025] Figure 4 is a three-dimensional diagram of a fixing member provided by the present invention;

[0026] Figure 5 is a three-dimensional diagram of a fixing assembly provided by the present invention;

[0027] Figure 6 is a three-dimensional diagram of the rotating member provided by the present invention;

[0028] Figure 7 is a stereogram of a rotating assembly provided by the present invention;

[0029] Figure 8 The diagram is a diagram showing the relative position change between the first magnet and the magnetic conductive column when the knob provided by the present invention is rotated.

[0030] In the figure, 10, the fixing member; 11, the second concave cavity; 12, the first boss; 20, the rotating member; 21, the first concave cavity; 22, the third concave cavity; 23, the second boss; 30, the first magnet; 41, the magnetic column; 42, the connecting ring; 50, the second magnet; 60, the third magnet. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] The knob of the embodiment of the present invention includes a fixed component and a rotating component that are relatively and separately arranged, and the rotating component can rotate relative to the fixed component; the rotating component includes a rotating part and N first magnets, the N first magnets are evenly distributed circumferentially on the rotating part, and the polarities of two adjacent first magnets are opposite; the fixed component includes a fixed part and Y magnetic conductive pillars with top ends facing the rotating part, the Y magnetic conductive pillars are evenly distributed circumferentially on the fixed part and correspond to the circumference where the N first magnets are located. The rotating component and the fixed component of the embodiment of the present invention are arranged opposite to and separately, and the rotating component and the fixed component can be arranged on both sides of the glass panel. The rotating component and the fixed component are adsorbed on the glass panel by the magnetic attraction between the first magnet and the magnetic pole, and there is no need to drill holes in the glass panel. When the user rotates the rotating component to make the next first magnet approach the magnetic pole, since the two adjacent first magnets on the rotating component have opposite polarities, the magnetic circuit direction of the magnetic pole will suddenly change under the sequential action of the two adjacent first magnets with opposite polarities, so that the magnetic direction of the magnetic pole to the next first magnet can be changed from the original direction to the opposite direction, thereby producing a sudden rotation feel and improving the user experience.

[0033] Embodiment 1

[0034] like Figure 2-Figure 7 As shown, a knob provided by the present invention comprises a fixed component and a rotating component which are arranged relatively and separately, and the rotating component can rotate relative to the fixed component;

[0035] The rotating assembly includes a rotating member 20 and N first magnets 30, wherein the N first magnets 30 are evenly distributed on the rotating member 20 in a circumferential direction, and two adjacent first magnets 30 have opposite polarities, wherein N≥2, and N is a positive even number;

[0036] The fixing assembly includes a fixing part 10 and Y magnetic conductive pillars 41 with their top ends facing the rotating part 20, wherein the Y magnetic conductive pillars 41 are evenly distributed circumferentially on the fixing part 10 and correspond to the circumference where the N first magnets 30 are located, wherein Y>N, Y is a positive integer and a multiple of 3.

[0037] In this embodiment, the magnetic pillar 41 itself does not have magnetism, but can conduct magnetism and generate magnetism under the action of a magnet, such as silicon steel sheets and various iron products. The correspondence between the circumference of the magnetic pillar 41 and the first magnet 30 means that the magnetic field of the first magnet 30 can act on the magnetic pillar 41, and is not an absolute limitation on the positions of the magnetic pillar 41 and the first magnet 30.

[0038] In the embodiment of the present invention, a first magnet 30 is disposed on the rotating member 20, and a magnetic column 41 is disposed on the fixed member 10. When the rotating member assembly rotates, the first magnet 30 is driven to rotate relative to the magnetic column 41, so that when one first magnet 30 corresponds to one magnetic column 41, it pauses once to form a gear.

[0039] The number of the first magnets 30 and the magnetic conductive pillars 41 can be set according to the actual gear requirements, N can be 2, 4, 6, 8..., Y can be 3, 6, 9, 12, 18..., N / Y can be 2 / 3, 4 / 6, 6 / 9, 8 / 9, 10 / 12, 12 / 18 and so on. When N / Y=2 / 3, the gears are 2Y. For example, 6 evenly distributed first magnets 30 and 9 evenly distributed magnetic conductive pillars 41 can form 18 gears.

[0040] Furthermore, the first magnet 30 is disposed on the side of the rotating member 20 facing the fixed member 10 , so that there is no barrier between the first magnet 30 and the magnetic column 41 , thereby preventing the barrier from isolating the magnetic force between the first magnet 30 and the magnetic column 41 .

[0041] Furthermore, a first cavity 21 for placing the first magnet 30 is provided on the side of the rotating member 20 facing the fixed member 10. The first cavity 21 can be a large cavity or a plurality of independent cavities with the same number as the first magnet 30. The first cavity 21 is provided and the first magnet 30 is placed in the first cavity 21. Firstly, it is convenient to install the first magnet 30. Secondly, the height of the first cavity 21 can be set to be the same as or higher than the height of the first magnet 30, so that the side wall of the first cavity 21 is higher than the first magnet, thereby protecting the first magnet 30 from being hit by foreign objects on the side and preventing the first magnet 30 from being misplaced.

[0042] Optionally, a sensing element (not shown in the figure) that generates a signal with the first magnet 30 may be further provided on the fixed member 10. The sensing element may be, but is not limited to, a Hall element or a reed switch. When the rotating member 20 drives the first magnet 30 to rotate, the first magnet 30 and the sensing element generate a signal when facing each other. A circuit may be configured to output a gear position through a sensing signal. Therefore, during the rotation of the rotating member 20, a gear adjustment may be performed each time a hand-feeling pause is generated. The first magnets 30 are evenly distributed, so that the rotation angle of each gear is the same.

[0043] The embodiment of the present invention can produce a sudden rotation feel, and the specific principle is as follows:

[0044] like Figure 8 As shown, Figure 8 a is the relative position diagram of the first magnet and the magnetic column when the knob stops at a gear position. Figure 8b is the relative position diagram of the first magnet and the magnetic column when the knob is turned to the middle position between the two gears. Figure 8 c is the relative position diagram of the first magnet and the magnetic column when the knob stops at the next adjacent gear position. Figure 8 As shown in a, under the magnetic force of the first magnet 30, at least one first magnet 30 and a magnetic column 41 are aligned in the middle. When there is no external force, the knob stops here to form a gear. At this time, the first S-pole magnet 30 and the magnetic column 41 generate an attractive force. When the knob is rotated under the action of an external force, the external force needs to be greater than the attractive force to gradually separate the first S-pole magnet 30 and the magnetic column 41 aligned in the middle, and the next N-pole first magnet 30 gradually approaches another magnetic column 41. At this time, the user needs to apply a relatively large external force to rotate the knob until it is as shown in FIG. Figure 8 b, the first magnet 30 at the N pole is closer to the magnetic column 41, and the polarity of the magnetic column 41 suddenly changes, so that the first magnet 30 at the N pole and the magnetic column 41 generate an attraction force. At this time, even if the user does not apply external force, the knob can be rotated to the position shown in FIG. Figure 8 c shows the next gear, which produces a sudden rotation feel.

[0045] The rotating component and the fixed component of the present invention are arranged opposite to and separately, and the rotating component and the fixed component can be arranged on both sides of the glass panel. The rotating component and the fixed component are adsorbed on the glass panel by the magnetic attraction between the first magnet 30 and the magnetic pole 41, and there is no need to drill holes in the glass panel. When the user rotates the rotating component to make the next first magnet 30 approach the magnetic pole 41, since the two adjacent first magnets 30 on the rotating member 20 have opposite polarities, the magnetic pole 41 will have a sudden change in the direction of its magnetic circuit 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 can be changed from the original direction to the opposite direction, thereby producing a sudden rotation feel and improving the user experience.

[0046] Embodiment 2

[0047] like Figure 3 , Figure 5 As shown, in an optional embodiment of the present invention, a connecting ring 42 is provided on the side of the fixed member 10 facing the rotating member 20, and the bottom ends of the Y magnetic conductive pillars 41 are connected to the connecting ring 42. By connecting the bottom ends of the Y magnetic conductive pillars 41 to the connecting ring 42, the Y magnetic conductive pillars 41 are integrated into one, which facilitates the installation and removal of the connecting ring 42. The connecting ring 42 and the magnetic conductive pillars 41 can be made of the same material or different materials.

[0048] Furthermore, the connecting ring 42 is integrally formed with the Y magnetic conductive pillars 41. The integral forming method includes casting, or cutting Y grooves at one end of the annular material to form Y magnetic conductive pillars 41, the groove does not penetrate the annular material, and the uncut end constitutes the connecting ring 42. The specific shape of the connecting ring 42 and the Y magnetic conductive pillars 41 after integrally forming can refer to the stator core of the motor.

[0049] In the embodiment of the present invention, Figure 8 As shown, Figure 8 a is the relative position diagram of the first magnet and the magnetic column when the knob stops at a gear position. Figure 8 b is the relative position diagram of the first magnet and the magnetic column when the knob is turned to the middle position between the two gears. Figure 8 c is the relative position diagram of the first magnet and the magnetic column when the knob stops at the next adjacent gear position. Figure 8 As shown in a, under the magnetic force of the first magnet 30, at least one first magnet 30 and a magnetic column 41 are aligned in the middle. When there is no external force, the knob stops here to form a gear. At this time, the first magnet 30 of the S pole and the magnetic column 41 generate an attractive force, and the first magnet 30 of the N pole and the magnetic column 41 generate a repulsive force. When the knob is rotated under the action of an external force, the external force needs to be greater than the sum of the attractive force and the repulsive force to gradually separate the first magnet 30 of the S pole and the magnetic column 41 aligned in the middle, and the next first magnet 30 of the N pole gradually approaches another magnetic column 41. At this time, the user needs to apply a relatively large external force to rotate the knob until it is as shown in FIG. Figure 8 b, the N-pole first magnet 30 is closer to the magnetic column 41. At this time, the polarity of the magnetic column 41 suddenly changes, so that the N-pole first magnet 30 and the magnetic column 41 generate an attractive force, and the S-pole first magnet 30 and the magnetic column 41 generate a repulsive force. At this time, even if the user does not apply external force, the knob can be rotated to the position shown in FIG. Figure 8 c shows the next gear, which produces a sudden rotation feel.

[0050] Embodiment 3

[0051] like Figure 5 , Figure 7 As shown, in an optional embodiment of the present invention, a second magnet 50 is provided in the middle of the fixing member 10;

[0052] A third magnet 60 corresponding to the second magnet 50 is disposed in the middle of the rotating member 20 , and the third magnet 60 has a polarity opposite to that of the second magnet 50 .

[0053] Through the mutual magnetic attraction between the third magnet 60 and the second magnet 50 with opposite polarities, the rotating assembly can be installed at a position opposite to the fixed assembly through the glass plate, so that the magnetic pillar 41 corresponds to the circumference of the first magnet 30. In addition, the center of the third magnet 60 and the second magnet 50 can be used as a rotation axis, so that the rotating assembly can rotate relative to the fixed assembly.

[0054] Furthermore, if Figure 4 , Figure 6 As shown, a second cavity 11 for placing the second magnet 50 is provided in the middle of one side of the fixed member 10 facing the rotating member 20, and a third cavity 22 for placing the third magnet 60 is provided in the middle of one side of the rotating member 20 facing the fixed member 10. The second cavity 11 is provided to facilitate installation and protection of the second magnet 50, and the third cavity 22 is provided to facilitate installation and protection of the third magnet 60, which has the same function as the first cavity 21, and will not be described in detail.

[0055] Furthermore, a first boss 12 is provided in the middle of one side of the fixed member 10 facing the rotating member 20, the second concave cavity 11 is provided on the top of the first boss 12, a second boss 23 is provided in the middle of one side of the rotating member 20 facing the fixed member 10, and the third concave cavity 22 is provided on the top of the second boss 23. The first boss 12 and the second boss 23 are provided, and the second concave cavity 11 is provided on the top of the first boss 12, and the third concave cavity 22 is provided on the top of the second boss 23, so that the third magnet 60 installed in the third concave cavity 22 is closer to the second magnet 50 installed in the second concave cavity 11, so that the magnetic attraction between the third magnet 60 and the second magnet 50 is greater.

[0056] Embodiment 4

[0057] The present invention also provides an electrical appliance, which includes but is not limited to a gas stove, an induction cooker, an electromagnetic heating pressure cooker, an electromagnetic heating rice cooker, a water heater or a wall-mounted boiler. Specifically, the electrical appliance includes an appliance body, a glass plate and the above-mentioned knob, wherein the glass plate is arranged on the appliance body, the fixing assembly is arranged on the inner side of the glass plate, and the rotating assembly is arranged on the outer side of the glass plate.

[0058] The rotating component and the fixed component of the present invention are arranged opposite to and separately, and the rotating component and the fixed component can be arranged on both sides of the glass panel. The rotating component and the fixed component are adsorbed on the glass panel by the magnetic attraction between the first magnet 30 and the magnetic pillar 41, and there is no need to drill holes in the glass panel; when the user rotates the rotating component to make the next first magnet 30 approach the magnetic pillar 41, since the two adjacent first magnets 30 on the rotating member 20 have opposite polarities, the magnetic path direction of the magnetic pillar 41 will suddenly change under the sequential action of the two adjacent first magnets 30 with opposite polarities, so that the magnetic direction of the magnetic pillar 41 to the next first magnet 30 can be changed from the original direction to the opposite direction, thereby producing a sudden rotation feel and improving the user experience.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A knob, characterized in that: It comprises a fixed component and a rotating component which are arranged relatively and separately, and the rotating component can rotate relative to the fixed component; The rotating assembly comprises a rotating member and N first magnets, wherein the N first magnets are uniformly arranged on the rotating member in a circumferential direction, and two adjacent first magnets have opposite polarities, wherein N≥2, and N is a positive even number; The fixing assembly includes a fixing member and Y magnetic conductive pillars with top surfaces facing the rotating member, the Y magnetic conductive pillars are uniformly arranged on the fixing member in the circumferential direction and correspond to the circumference where the N first magnets are located, the fixing member is provided with a connecting ring on the side facing the rotating member, the bottom ends of the Y magnetic conductive pillars are connected to the connecting ring, and the connecting ring and the Y magnetic conductive pillars are integrally formed, wherein Y>N, Y is a positive integer and a multiple of 3, wherein the magnetic conductive pillars themselves do not have magnetism but can conduct magnetism; A first boss is provided at the middle of one side of the fixed member facing the rotating member, a second concave cavity for placing a second magnet is provided at the top of the first boss, a second boss is provided at the middle of one side of the rotating member facing the fixed member, a third concave cavity for placing a third magnet is provided at the top of the second boss, and the second magnet and the third magnet have opposite magnetic properties; A first cavity for accommodating the first magnet is disposed on one side of the rotating member facing the fixed member, and a height of the first cavity is either the same as or higher than a height of the first magnet.

2. The knob according to claim 1, characterized in that: The first magnet is arranged on a side of the rotating member facing the fixed member.

3. An electrical device, characterized in that: It comprises a device body, a glass plate and a knob as described in any one of claims 1 to 2, wherein the glass plate is arranged on the device body, the fixing 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.

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