CN110865680A - Multifunctional magnetic adsorption type knob - Google Patents
Multifunctional magnetic adsorption type knob Download PDFInfo
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- CN110865680A CN110865680A CN201911312714.5A CN201911312714A CN110865680A CN 110865680 A CN110865680 A CN 110865680A CN 201911312714 A CN201911312714 A CN 201911312714A CN 110865680 A CN110865680 A CN 110865680A
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 36
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- 230000001419 dependent effect Effects 0.000 claims 2
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- 238000007789 sealing Methods 0.000 abstract description 2
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- 235000014676 Phragmites communis Nutrition 0.000 description 2
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
- G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels
- G05G1/10—Details, e.g. of discs, knobs, wheels or handles
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
The invention discloses a multifunctional magnetic adsorption type knob, and relates to the field of electric appliances. This multi-functional magnetism adsorbs formula knob includes: the fixed plate (1), locate the positive operating knob (4) of fixed plate through the mode of magnetism, locate operating knob's touch-sensitive portion (31) and signal magnet (3), locate operating knob back one side, be used for with the cooperation of signal magnet detects operating knob's angular displacement sensor (7) of data to and locate operating knob back one side, be used for through the fixed plate with operating knob detects and comes from touch-sensitive portion's touch-sensitive sensor (9) of touch action. The multifunctional rotary knob integrates the rotary knob and the touch switch, has the functions of the rotary knob and the touch switch, and is very convenient to operate. In addition, the novel fixing plate has the characteristics of good sealing performance, high safety, convenience for cleaning the surface of the fixing plate, long service life and suitability for miniaturization application.
Description
Technical Field
The invention relates to the field of electric appliances, in particular to a multifunctional magnetic adsorption type knob.
Background
Compare mechanical type knob, magnetism adsorbs formula knob need not trompil on the panel, has realized the complete isolation of operating knob and the inside main control circuit board of equipment, has advantages such as waterproof, dustproof, grease proofing dirt, the security is good, the equipment is easy clean, and can give the bigger intention space of equipment appearance designer.
Most of the existing magnetic adsorption type knobs only have a single knob function, and the menu operation is difficult to realize, namely the confirmation cannot be selected and the return cannot be operated. In actual electric appliance control, some other function key control is sometimes needed, for example, after volume is adjusted by a knob, or color components are adjusted, or brightness is adjusted, etc., a "confirmation command" needs to be issued; or a 'return instruction' needs to be issued when returning to a previous menu, and the like, which are all realized by configuring function keys, but adding the function keys on the panel can affect the convenience of panel operation, the waterproofness of the panel, the cost and the like.
Disclosure of Invention
The invention aims to provide a multifunctional magnetic adsorption type knob, which solves the defects in the prior art and improves the convenience of operation.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a multifunctional magnetic-adsorption-type knob, comprising:
the fixing plate (1) is provided with a rotating position (41) on one side of the front surface, and a positioning magnet (6) corresponding to the rotating position (41) on one side of the back surface;
the operation knob (4) is provided with an adsorption magnet (2), a signal magnet (3) and a touch sensing part (31), and the adsorption magnet (2) is matched with the positioning magnet (6) to adsorb and position the operation knob (4) at the rotating position (41);
the angular displacement sensor (7) is arranged on one side of the back face of the fixing plate (1), corresponds to the signal magnet (3) in position, and is used for detecting angular displacement data of the operation knob (4) in cooperation with the signal magnet (3); and
and the touch induction sensor (9) is arranged on one side of the back surface of the fixing plate (1), is connected with the fixing plate (1) through a touch input pin and is used for detecting touch action from the touch induction part (31) through the fixing plate (1) and the operation knob (4).
Preferably, a removal detection sensor (8) is further arranged on one side of the back face of the fixing plate (1), and the position of the removal detection sensor (8) corresponds to that of the signal magnet (3) and is used for being matched with the signal magnet (3) to detect the removal action and the returning action of the operation knob (4).
Preferably, the adsorption magnet (2) and the positioning magnet (6) are both in a circular ring structure.
Preferably, the signal magnet (3) is located in the space in the ring of the adsorption magnet (2), above the space in the ring or below the space in the ring, with the fixing plate (1) as a reference plane.
Preferably, the signal magnet (3) is a single magnet, two magnets or a plurality of magnets.
Preferably, the touch sensing sensor (9) is a separate touch sensing chip or other functional chip with touch detection function.
Preferably, the touch input foot of the touch induction sensor (9) is indirectly connected with the fixing plate (1) through the positioning magnet (6).
Preferably, the touch sensing part (31) is the whole outer surface or a part of the outer surface of the operation knob (4).
Preferably, the touch sensing part (31) is a sheet body mounted to the operation knob (4), and the sheet body is connected to the signal magnet (3) and/or the adsorption magnet (2) through an electrostatic conductive material.
Preferably, the removal detection sensor (8) and the angular displacement sensor (7) are one and the same magnetically sensitive angle sensor.
Preferably, the magneto-sensitive angle sensor is a TMR magneto-sensitive angle sensor.
Preferably, the magnetic-sensitive angle sensor is located in the space in the ring, above the space in the ring or below the space in the ring of the positioning magnet (6) with the fixing plate (1) as a reference plane.
Preferably, the touch sensitive sensor is a capacitive touch sensor.
Compared with the prior art, the invention has at least the following beneficial effects:
this multi-functional magnetism adsorbs formula knob collects knob and touch switch in an organic whole, not only has knob function and touch switch function, and the operation is very convenient moreover.
No wire is arranged between the operation knob and the control circuit board, a hole does not need to be formed in the fixing plate, and the fixing plate has the advantages of being good in sealing performance, high in safety and convenient to clean the surface of the fixing plate. The characteristic of easy cleaning is particularly obvious for kitchen appliances such as gas ranges and range hoods.
The rotation and the touch function of the operation knob do not need the mechanical deformation of the knob to realize, so the operation knob can be seamless in appearance and is easier to clean, and meanwhile, the service life is longer without the mechanical deformation.
After the moving-away detection sensor and the angular displacement sensor share the same magnetic-sensitive angle sensor, the Hall sensor, the infrared light sensor, the reed switch and the like do not need to be additionally adopted as a detection means for detecting whether the operation knob is moved away or returned, so that the cost is lower, and the method is more suitable for miniaturization application.
Drawings
FIG. 1 is a schematic diagram of a multi-functional magnetic attachment knob according to an exemplary embodiment;
FIG. 2 is a top view of the back side of the fixing plate;
FIG. 3 is a bottom view of the operating knob;
FIG. 4 is a plan view of the operation knob
FIG. 5 is a schematic structural diagram of a first embodiment of a touch-sensitive sheet;
FIG. 6 is a schematic structural diagram of a second embodiment of a touch-sensitive sheet;
reference numerals: 1. a fixing plate; 2. an adsorption magnet; 3. a signal magnet; 31. a touch sensing part; 32. touching the identifier; 4. an operation knob; 41. rotating; 5. a circuit substrate; 6. positioning a magnet; 7. an angular displacement sensor; 8. a removal detection sensor; 9. a touch-sensitive sensor; 10. an electrostatic conductor.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
This multi-functional magnetism adsorbs formula knob has knob function and touch switch function concurrently.
Referring to fig. 1 to 4, the multifunctional magnetic adsorption type knob includes: the device comprises a fixed plate 1, an operation knob 4, a signal magnet 3, an angular displacement sensor 7, a touch induction sensor 9 and a removal detection sensor 8.
The front side of the fixed plate 1 is provided with a rotating position 41, and the back side of the fixed plate 1 is provided with a positioning magnet 6 corresponding to the rotating position 41. The positioning magnet 6 may be mounted in, but not limited to, the following manner: can directly paste at the fixed plate 1 back with glue, also can be embedded in the fixed plate 1 back, can also adopt plastics, ya keli, metal support to support in fixed plate 1 back.
An adsorption magnet 2 is fixedly arranged inside the operation knob 4, and the adsorption magnet 2 is matched with the positioning magnet 6 to adsorb and position the operation knob 4 at the rotating position 41. The adsorption magnet 2 and the positioning magnet 6 are preferably in a circular ring structure to facilitate the adsorption positioning and centering of the operation knob 4.
The rotation position 41 is not particularly limited in size in the present application, but is set for convenience of describing that the positioning magnet 6 fixes the operation knob 4 to a certain position on the fixing plate 1 by a magnetic force.
The signal magnet 3 is fixedly arranged in the operation knob 4, and on one hand, the signal magnet provides a rotary north-south magnetic field for the angular displacement sensor 7 so as to detect the angular displacement data of the operation knob 4 and realize the knob function; on the other hand, the magnetic field intensity is provided for the removal detection sensor 8 to detect the removal action and the return action of the operation knob 4, thereby realizing the switch function.
The signal magnet 3 may be located in the space inside the ring of the attracting magnet 2, above the space inside the ring, or below the space inside the ring. The signal magnet 3 allows a bottom-view overlap area with the attracting magnet 2. The signal magnet 3 may be a single magnet, two magnets or a plurality of magnets.
When the signal magnet 3 is a single magnet, the shape of the signal magnet may be, but not limited to, a cylinder, a square, a strip, or other shapes, taking a cylinder as an example, the north and south magnetic poles are distributed differently from the attracting magnet 2 and the positioning magnet 6 (as shown in fig. 1), the operation knob 4 is attracted to the rotating position 41, the fixing plate 1 is used as a reference plane, the magnetic poles of the signal magnet 3 are usually south pole and north pole, i.e., a magnet magnetized radially (as shown in fig. 3), so as to generate a rotating north and south magnetic field when the operation knob 4 rotates at the rotating position 41.
It should be understood that the signal magnet 3 is aimed at generating a rotating north-south magnetic field, and the magnetization of the signal magnet 3 may be, but is not limited to, purely said radial magnetization, i.e.: it is sufficient that a rotating north-south magnetic field is generated on the induction side of the magnetic angle sensor in accordance with the rotation of the operation knob 4 at the rotation position 41.
When two or more magnets are used and different magnetic poles are respectively directed to the sensing side of the angular displacement sensor 7, the purpose of generating a rotating north-south magnetic field when the operation knob 4 rotates at the rotation position 41 can also be achieved. Further, a single magnet having a plurality of north and south magnetic poles on the same face may be used as the signal magnet 3.
In this embodiment, the angular displacement sensor 7 and the removal detection sensor 8 share the same magnetic-sensitive angle sensor, that is: the magnetic-sensitive angle sensor is used for detecting whether the operation knob 4 is removed/returned from the rotation position 41 or not, and also for detecting the rotation angle of the operation knob 4, and has the capability of sensing the magnetic field intensity and the rotation angle. The magnetic-sensing angle sensor is supported on one side of the back surface of the fixing plate 1 through a circuit substrate 5, the position of the magnetic-sensing angle sensor corresponds to that of the signal magnet 3, and the magnetic-sensing angle sensor can be arranged on the front surface of the circuit substrate 5 or on the back surface of the circuit substrate 5. It will be appreciated that by sharing the same magnetically sensitive angle sensor, further reduction in electronics results in lower cost and better suitability for miniaturized applications, but the invention is not limited in this manner.
The TMR magnetic angle sensor is preferably a TMR magnetic angle sensor, has excellent anti-interference performance and sensitivity, has better temperature characteristics than magnetic angle sensors of other technologies, and can better ensure the stability of products.
A touch sensing sheet is further fixedly provided in the operation knob 4, and the touch sensing sheet serves as a touch sensing portion 31 for receiving a touch operation of a user. The touch sensing sheet is located at the top center of the operation knob 4, and a touch mark 32 (see fig. 4) is provided on the surface of the touch sensing sheet, where the touch mark 32 may be "HOME", "OK", or other logo. The touch sensing sheet is connected with the signal magnet 3 and/or the adsorption magnet 2 through an electrostatic conductive material to obtain a better human body capacitance sensing effect, and is preferably a plastic sheet (as shown in fig. 6), the plastic sheet may be in a circular, oval or other shape, the surface of the plastic sheet may be plated with metal, and the touch sensing sheet is also preferably a planar coil (as shown in fig. 5). Alternative static conductive materials include, but are not limited to, acrylic, glass, plastic, metal, preferably a spring. The entire outer surface or a part of the outer surface of the operation knob 4 may be the touch sensing portion 31.
The touch sensor 9 is mounted on the rear surface side of the fixed plate 1 via the circuit board 5, and senses a touch operation from the operation knob 4. The touch input foot of the touch sensor 9 can detect the touch operation from the operation knob 4 in two ways. The first mode is as follows: the touch input pin is connected with the positioning magnet 6 through the electrostatic conductor 10 (see fig. 2), the positioning magnet 6 is tightly attached to or embedded in the fixing plate 1, and a signal (change of capacitance value) generated by touch operation is transmitted to the touch induction sensor 9 through the operation knob 4, the fixing plate 1 and the positioning magnet 6. The second mode is as follows: the touch input foot is directly connected with the fixed plate 1 without passing through the positioning magnet 6, and a signal (change of capacitance value) generated by touch operation is transmitted to the touch induction sensor 9 through the operation knob 4 and the fixed plate 1. In the two modes, the connection mode can be, but is not limited to, spring, thimble and connector connection. The touch sensor 9 may be an independent touch sensor chip, or may be another functional chip with a touch sensing function.
Touch-sensitive sensor 9 prefers to close tai brand capacitive touch sensor chip, and touch-sensitive sensor 9 of this brand is superior performance and sexual valence relative altitude, is favorable to the reliability and the cost optimization of product.
In practical use, the sensing sensitivity of the touch sensing sensor 9 can be adjusted by modifying the circuit parameters to prevent misoperation, so that the touch sensing part 31 is effective only when a user touches the touch sensing part and is ineffective when other areas of the operation knob 4 are touched. The position of the touch sensing sheet may be the top of the operation knob 4, or may be the surface position where the middle of the operation knob 4 is connected to the operation knob 4 through an electrostatic conductive material, so that the user can operate the touch function. In practice, the touch sensing portion 31 is usually coated or painted, and the coating or paint is also a part of the touch sensing portion 31.
The working principle of the multifunctional magnetic adsorption type knob is as follows:
on one hand, when the operation knob 4 is rotated at the rotation position 41, the north-south magnetic field generated by the signal magnet 3 is also rotated synchronously, and the angular displacement sensor 7 senses the rotation of the north-south magnetic field to obtain angular displacement data of the operation knob 4, thereby implementing a knob function, and the angular displacement data can be used for various continuous adjustment controls, such as volume adjustment, light brightness adjustment, fan rotation speed adjustment, and the like. On the other hand, when a finger approaches or touches the touch sensitive portion 31 on the operation knob 4, the magnitude of the capacitance sensed by the touch sensitive sensor 9 changes. For example, when a finger does not approach or touch the touch sensing portion 31, the capacitance sensed by the touch sensing sensor 9 is Cx, and when the finger approaches or touches the touch sensing portion 31, the human capacitance is sensed, assuming that the capacitance of the human body is Cf, the capacitance sensed by the touch sensing sensor 9 is Cx + Cf, that is, the sensed capacitance changes, and the change can be used to determine whether the finger touches or approaches the touch sensing portion 31, thereby implementing the touch recognition function. The touch recognition function can be used for realizing confirmation, return and other operations. In a third aspect, when the operation knob 4 is in the rotation position 41 and when the operation knob is away from the rotation position 41, the magnetic field intensity sensed by the magnetic-sensitive angle sensor is different, and whether the operation knob 4 is removed from or returned to the rotation position 41 is identified by using the difference of the sensed magnetic field intensity. Thus by removing/returning the operating knob 4 the multifunctional magnetic-adsorption knob can also form a switch signal for control purposes. The data obtained by all the sensors are sent to a background singlechip or other control chips for identification, processing and analysis, so as to control and drive other peripheral equipment, such as a loudspeaker, an LED, a fan and the like.
Above-mentioned multi-functional magnetism adsorbs formula knob has following beneficial effect at least:
1. the touch control knob integrates the knob and the touch control switch, has the knob function and the touch control function, and is very convenient to operate. The touch function of the button is equivalent to the HOME key function of the apple mobile phone, so that a user can complete the operations such as selection, confirmation, return and even more complicated menu on the knob, and the button can replace the traditional multi-key operation panel of an electric appliance to realize one-key operation.
2. It utilizes electric capacity sensing and magnetic field to communicate, need not be at 1 trompil line of fixed plate, has that the leakproofness is good, the security is high and the clear characteristics of fixed plate surface of being convenient for. The characteristic of easy cleaning is particularly obvious for kitchen appliances such as gas ranges and range hoods.
3. The rotation and the touch function of the operation knob do not need the knob to generate mechanical deformation to realize, so the operation knob can have a seamless appearance and is easier to clean, and meanwhile, the operation knob has no mechanical deformation and longer service life.
4. The detection method does not need to additionally adopt a Hall sensor, an infrared light sensor, a reed switch and the like as a detection means for detecting whether the operation knob is moved away or returned, has lower cost and is more suitable for miniaturization application.
The present invention has been described in detail with reference to the specific embodiments, and the detailed description is only for the purpose of helping those skilled in the art understand the present invention, and is not to be construed as limiting the scope of the present invention. Various modifications, equivalent changes, etc. made by those skilled in the art under the spirit of the present invention shall be included in the protection scope of the present invention.
Claims (11)
1. A multifunctional magnetic adsorption type knob is characterized by comprising:
the fixing plate (1) is provided with a rotating position (41) on one side of the front surface, and a positioning magnet (6) corresponding to the rotating position (41) on one side of the back surface;
the operation knob (4) is provided with an adsorption magnet (2), a signal magnet (3) and a touch sensing part (31), and the adsorption magnet (2) is matched with the positioning magnet (6) to adsorb and position the operation knob (4) at the rotating position (41);
the angular displacement sensor (7) is arranged on one side of the back face of the fixing plate (1), corresponds to the signal magnet (3) in position, and is used for detecting angular displacement data of the operation knob (4) in cooperation with the signal magnet (3); and
and the touch induction sensor (9) is arranged on one side of the back surface of the fixing plate (1), is connected with the fixing plate (1) through a touch input pin and is used for detecting touch action from the touch induction part (31) through the fixing plate (1) and the operation knob (4).
2. The multifunctional magnetic adsorption type knob according to claim 1, characterized in that a removal detection sensor (8) is further disposed on one side of the back surface of the fixing plate (1), and the removal detection sensor (8) is located corresponding to the signal magnet (3) and is used for cooperating with the signal magnet (3) to detect the removal action and the return action of the operation knob (4).
3. The multifunctional magnetic-adsorption knob according to claim 1, characterized in that: the adsorption magnet (2) and the positioning magnet (6) are both in a circular ring structure.
4. The multifunctional magnetic-adsorption knob according to claim 3, characterized in that: the fixed plate (1) is used as a reference plane, and the signal magnet (3) is positioned in the space in the ring of the adsorption magnet (2), above the space in the ring or below the space in the ring.
5. The multifunctional magnetic-adsorption knob according to claim 1, characterized in that: the signal magnet (3) is a single magnet, two magnets or a plurality of magnets.
6. The multifunctional magnetic-adsorption knob according to claim 1, characterized in that: the touch sensing sensor (9) is an independent touch sensing chip or other functional chips with touch detection function.
7. The multifunctional magnetic-adsorption knob according to claim 1, characterized in that: and the touch input foot of the touch induction sensor (9) is indirectly connected with the fixing plate (1) through the positioning magnet (6).
8. The multifunctional magnetic-adsorption knob according to claim 1, characterized in that: the touch sensing part (31) is the whole outer surface or part of the outer surface of the operation knob (4).
9. The multifunctional magnetic-adsorption knob according to claim 1, characterized in that: the touch sensing part (31) is a sheet body arranged on the operation knob (4), and the sheet body is connected with the signal magnet (3) and/or the adsorption magnet (2) through an electrostatic conduction material.
10. The multifunctional magnetic-adsorption knob according to claim 2, characterized in that: the moving-away detection sensor (8) and the angular displacement sensor (7) are the same magnetic-sensing angle sensor.
11. The multifunctional magnetic-adsorption knob according to claim 10, characterized in that: the magneto-dependent angle sensor is a TMR magneto-dependent angle sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312714.5A CN110865680A (en) | 2019-12-18 | 2019-12-18 | Multifunctional magnetic adsorption type knob |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312714.5A CN110865680A (en) | 2019-12-18 | 2019-12-18 | Multifunctional magnetic adsorption type knob |
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| CN110865680A true CN110865680A (en) | 2020-03-06 |
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| CN201911312714.5A Pending CN110865680A (en) | 2019-12-18 | 2019-12-18 | Multifunctional magnetic adsorption type knob |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114430600A (en) * | 2020-10-29 | 2022-05-03 | 深圳绿米联创科技有限公司 | Control method of breathing lamp, knob type switch and storage medium |
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| CN207053482U (en) * | 2017-07-14 | 2018-02-27 | 惠州拓邦电气技术有限公司 | A kind of separate type rotary switch |
| CN108594928A (en) * | 2018-08-01 | 2018-09-28 | 广州周立功单片机科技有限公司 | Remove recognizable magnetic rotation button |
| CN109933122A (en) * | 2017-12-18 | 2019-06-25 | 英飞凌科技股份有限公司 | Magnetic system, magnetic system knob, the equipment containing magnetic system and the method for determining movement |
| CN210924316U (en) * | 2019-12-18 | 2020-07-03 | 深圳市必显科技有限公司 | Multifunctional magnetic adsorption type knob |
-
2019
- 2019-12-18 CN CN201911312714.5A patent/CN110865680A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207053482U (en) * | 2017-07-14 | 2018-02-27 | 惠州拓邦电气技术有限公司 | A kind of separate type rotary switch |
| CN109933122A (en) * | 2017-12-18 | 2019-06-25 | 英飞凌科技股份有限公司 | Magnetic system, magnetic system knob, the equipment containing magnetic system and the method for determining movement |
| CN108594928A (en) * | 2018-08-01 | 2018-09-28 | 广州周立功单片机科技有限公司 | Remove recognizable magnetic rotation button |
| CN210924316U (en) * | 2019-12-18 | 2020-07-03 | 深圳市必显科技有限公司 | Multifunctional magnetic adsorption type knob |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114430600A (en) * | 2020-10-29 | 2022-05-03 | 深圳绿米联创科技有限公司 | Control method of breathing lamp, knob type switch and storage medium |
| CN114430600B (en) * | 2020-10-29 | 2024-04-12 | 深圳绿米联创科技有限公司 | Breathing lamp control method, knob type switch and storage medium |
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