CN214480534U - Inductive switch knob and terminal equipment - Google Patents
Inductive switch knob and terminal equipment Download PDFInfo
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- CN214480534U CN214480534U CN202120526872.7U CN202120526872U CN214480534U CN 214480534 U CN214480534 U CN 214480534U CN 202120526872 U CN202120526872 U CN 202120526872U CN 214480534 U CN214480534 U CN 214480534U
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- knob
- rotation
- circuit board
- inductive switch
- detection assembly
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Abstract
The utility model provides an inductive switch knob and terminal equipment, wherein, the inductive switch knob comprises a circuit board, a knob main body, a rotation detection assembly and an original point detection assembly; wherein: the circuit board is arranged opposite to the knob body and is respectively and electrically connected with the rotation detection assembly and the origin detection assembly; the rotation detection assembly is used for detecting the rotation direction and the rotation angle of the knob body; the origin detection component is used for detecting whether the knob main body is located at an origin position. The utility model provides an inductive switch knob, including circuit board and the knob main part that the components of a whole that can function independently set up, simple structure and easy to maintain to possess rotation detection subassembly and initial point determine module simultaneously, can accurately judge the direction of rotation and the rotation angle of knob main part, the commonality is stronger, is favorable to the realization of coding method and user experience's promotion.
Description
Technical Field
The utility model relates to the field of electronic technology, in particular to inductive switch knob and terminal equipment.
Background
The existing induction type knobs mostly adopt a magnetic induction mode or a light induction mode, wherein the structure and the coding mode of the switch knob adopting the magnetic induction mode are complex and have high cost, and the switch knob adopting the light induction mode has high failure rate due to the fact that an optical path is easily interfered and shielded.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an inductive switch knob and terminal equipment in order to overcome the above-mentioned defect that induction type switch knob exists in the prior art.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
an inductive switch knob comprises a circuit board, a knob body, a rotation detection assembly and an origin detection assembly; wherein:
the circuit board is arranged opposite to the knob body and is respectively and electrically connected with the rotation detection assembly and the origin detection assembly;
the rotation detection assembly is used for detecting the rotation direction and the rotation angle of the knob body;
the origin detection component is used for detecting whether the knob main body is located at an origin position.
Preferably, the rotation detection assembly comprises a plurality of first hall switches and a plurality of first permanent magnets; wherein:
the first Hall switches are arranged on the circuit board, electrically connected with the circuit board and used for triggering pulse signals when the first permanent magnets are detected;
the first permanent magnets are arranged inside the knob main body and rotate together with the knob main body.
Preferably, the rotation detecting assembly includes two of the first hall switches and at least two of the first permanent magnets; wherein:
an included angle formed by the two first Hall switches and the rotating center of the knob main body is smaller than an included angle formed by the two adjacent first permanent magnets and the rotating center.
Preferably, the two first hall switches are distributed on the same arc with the rotation center as the center of circle.
Preferably, the two first hall switches are respectively arranged at the end position and the middle position of the arc.
Preferably, the first permanent magnets are uniformly distributed along a circumference with the rotation center as a center.
Preferably, the first permanent magnet is arc-shaped;
the first permanent magnets occupy the same proportion of the circumference as the interval between two adjacent first permanent magnets.
Preferably, the circuit board comprises a third permanent magnet, and the knob body comprises a fourth permanent magnet;
the third permanent magnet and the fourth permanent magnet are used for aligning the circuit board with the knob main body.
Preferably, the origin detection assembly comprises a second hall switch and a second permanent magnet; wherein:
the second Hall switch is arranged on the circuit board, is electrically connected with the circuit board and is used for triggering a pulse signal when the second permanent magnet is detected;
the second permanent magnet is arranged in the knob main body and rotates together with the knob main body;
and/or the presence of a gas in the gas,
the circuit board and the knob body are separately arranged.
A terminal device comprises an operation panel and any one of the induction switch knobs; wherein:
the inductive switch knob is arranged on the operation panel.
The utility model discloses an actively advance the effect and lie in: the utility model provides an inductive switch knob, including circuit board and the knob main part that the components of a whole that can function independently set up, simple structure and easy to maintain to possess rotation detection subassembly and initial point determine module simultaneously, can accurately judge the direction of rotation and the rotation angle of knob main part, the commonality is stronger, is favorable to the realization of coding method and user experience's promotion.
Drawings
Fig. 1 is a schematic block diagram of an inductive switch knob according to embodiment 1 of the present invention.
Fig. 2 is a schematic partial structure diagram of an inductive switch knob according to the embodiment 1 of the present invention.
FIG. 3 is a logic timing diagram of the inductive switch knob according to FIG. 2.
Detailed Description
The present invention will be more clearly and completely described below with reference to the accompanying drawings.
Example 1
The present embodiment provides an inductive switch knob, and fig. 1 shows a module schematic diagram of the present embodiment. Referring to fig. 1, the inductive switch button provided in this embodiment includes a circuit board 1, a knob body 2, a rotation detection assembly 3, and an origin detection assembly 4, wherein the circuit board 1 is disposed opposite to the knob body 2, the circuit board 1 is electrically connected to the rotation detection assembly 3 and the origin detection assembly 4, the rotation detection assembly 3 is configured to detect a rotation direction and a rotation angle of the knob body 2, and the origin detection assembly 4 is configured to detect whether the knob body 2 is located at an origin position.
In this embodiment, the circuit board 1 and the knob main body 2 are preferably separately disposed, so that the circuit board 1 and the knob main body 2 can be respectively repaired and replaced, which is beneficial to improving the service life of the inductive switch knob and reducing the maintenance cost of the inductive switch knob.
Specifically, in the present embodiment, the circuit board 1 may include a third permanent magnet 11, and the knob body 2 may include a fourth permanent magnet 21, so that the third permanent magnet 11 and the fourth permanent magnet 21 may be used for alignment of the circuit board 1 and the knob body 2 due to mutual attraction between the third permanent magnet 11 and the fourth permanent magnet 21.
Further, in the present embodiment, an operation panel may be disposed between the circuit board 1 and the knob body 2, and specifically, the circuit board 1 and the knob body 2 may be disposed on two opposite planes of the operation panel, for example, may be disposed on the left and right planes of the operation panel, and for example, may be disposed on the upper and lower planes of the operation panel.
In this embodiment, the rotation detecting assembly 3 preferably includes a plurality of first hall switches 31 and a plurality of first permanent magnets 32, wherein the plurality of first hall switches 31 may be disposed on the circuit board 1 and electrically connected to the circuit board 1 for triggering a pulse signal when detecting the first permanent magnets 32, and the plurality of first permanent magnets 32 may be disposed inside the knob body 2 and rotate together with the knob body 2.
Specifically, in this embodiment, the inside of the knob main body 2 may be provided with a plurality of receiving grooves for fixedly mounting the first permanent magnet 32, so that the first permanent magnet 32 may rotate along with the rotation of the knob main body 2, and then, the size of the magnetic field detected by the first hall switch 31 may change along with the rotation of the knob main body 2. In the present embodiment, the first hall switch 31 is configured to output a high level signal (represented by "1") when the first permanent magnet 32 is detected (for example, the detected magnetic field size is greater than a first preset threshold, where the first preset threshold may be set according to practical applications), and is further configured to output a low level signal (represented by "0") when the first permanent magnet 32 is not detected (for example, the detected magnetic field size is not greater than the first preset threshold), so that, in the present embodiment, the first hall switch 31 has only two states, namely, "0" and "1".
Further, in the present embodiment, the rotation detecting assembly 3 preferably includes two first hall switches 31 and at least two first permanent magnets 32, wherein an included angle formed by the two first hall switches 31 and the rotation center of the knob body 2 is smaller than an included angle formed by the two adjacent first permanent magnets 32 and the rotation center. Therefore, in this embodiment, according to the sequence of the two first hall switches 31 triggering the pulse signals, it can be determined whether the rotation direction of the knob main body 2 is clockwise or clockwise, and further, according to the number of times each first hall switch 31 triggers the pulse signals, it can also determine the rotation angle of the knob main body 2.
In the present embodiment, the two first hall switches 31 are preferably distributed on the same arc with the center of rotation as the center, and further, the two first hall switches 31 are preferably respectively disposed at the end position and the middle position of the arc. In the present embodiment, the plurality of first permanent magnets 32 are preferably uniformly distributed along the circumference centered on the rotation center, and in the present embodiment, the shape of the first permanent magnets 32 is preferably circular arc, and the proportion of the first permanent magnets 32 occupying the circumference is the same as the proportion of the interval between two adjacent first permanent magnets 32 occupying the circumference.
Specifically, in the present embodiment, assuming that the number of the first permanent magnets 32 is Y (Y is a natural number greater than or equal to 2), there are Y first permanent magnets 32 distributed on the circumference at equal intervals and equally dividing the circumference on which the first permanent magnets 32 are mounted into 2Y parts, and of the two adjacent parts, one part is mounted with the first permanent magnets 32, and the other part is not mounted with the first permanent magnets 32. Based on this, the included angle formed between the two first hall switches 31 and the rotation center is 360/4Y, and when the knob body 2 rotates 360/4Y degrees, the output state of at least one first hall switch 31 changes, so that the number of codes that can be sensed by one rotation of the inductive switch knob provided by this embodiment is 4Y.
In the present embodiment, the origin detecting assembly 4 may include a second hall switch 41 and a second permanent magnet 42, wherein the second hall switch 41 may be disposed on the circuit board 1 and electrically connected to the circuit board 1 for triggering a pulse signal when the second permanent magnet 42 is detected, the second permanent magnet 42 may be disposed inside the knob body 2 and rotates together with the knob body 2, and the second hall switch 41 and the second permanent magnet 42 are preferably distributed on a concentric circle with the rotation center of the knob body 2 as the center of circle.
Specifically, in this embodiment, the inside of the knob main body 2 may further be provided with a plurality of receiving slots for fixedly mounting the second permanent magnet 42, so that the second permanent magnet 42 may rotate along with the rotation of the knob main body 2, and then, the size of the magnetic field detected by the second hall switch 41 may change along with the rotation of the knob main body 2. In the present embodiment, the second hall switch 41 is configured to output a high level signal (represented by "1") when the second permanent magnet 42 is detected (for example, the detected magnetic field size is larger than a second preset threshold, where the second preset threshold may be set according to practical applications), and is further configured to output a low level signal (represented by "0") when the second permanent magnet 42 is not detected (for example, the detected magnetic field size is not larger than the second preset threshold), so that, in the present embodiment, the second hall switch 41 has only two states, namely, "0" and "1".
In the present embodiment, before the knob body 2 is rotated, the knob body 2 is located at the origin position, and the second hall switch 41 outputs "1", and if the knob body 2 is not located at the origin position, the second hall switch 41 outputs "0". Therefore, when the knob body 2 is rotated, the rotation angle of the knob body 2 can be specifically confirmed in association with whether the knob body 2 is located at the origin position, and specifically, the number of times of the trigger pulse signals of each first hall switch 31 are counted to determine the rotation angle of the knob body 2, starting from the origin position where the knob body 2 is away from the origin position.
Fig. 2 shows an example of the rotation detecting assembly 3 of the present embodiment, and referring to fig. 2, the rotation detecting assembly 3 includes two first hall switches 31 (respectively referred to as hall switch a and hall switch B) in the shape of circular arc and two first permanent magnets 32 (respectively referred to as permanent magnet C and permanent magnet D), the circumference on which the first permanent magnets 32 are mounted is divided into 4 parts on average, and the hall switch a and the hall switch B form an angle 360/4Y with the rotation center.
Fig. 3 shows a logic timing diagram of the inductive switch knob according to fig. 2, in conjunction with fig. 3, the inductive switch knob of the present embodiment can determine whether the rotation direction of the knob body 2 is clockwise or counterclockwise based on the following two principles, specifically:
principle one
The following states are set as clockwise rotation:
state 1: at the moment when the output of the hall switch a is from "0" to "1" and the output of the hall switch B is "0", the state change of the hall switch a occurs, and the state change is set to be the clockwise rotation of the knob body 2;
state 2: at the moment when the output of the hall switch a is from "1" to "0" and the output of the hall switch B is "1", the state change of the hall switch a occurs, and the state change is set to be the clockwise rotation of the knob body 2;
state 3: at the instant when the output of the hall switch B goes from "1" to "0" and the output of the hall switch a goes to "0", the hall switch B changes state, and the state change is set to be clockwise rotation of the knob body 2.
And 4: at the instant when the output of the hall switch B goes from "0" to "1" and the output of the hall switch a is "1", the hall switch B changes state, and the state change is set to be clockwise rotation of the knob body 2.
The following states are set as counterclockwise rotation:
state 1: at the moment when the output of the hall switch a is from "0" to "1" and the output of the hall switch B is "1", the state change of the hall switch a occurs, and the state change is set as the counterclockwise rotation of the knob body 2;
state 2: at the moment when the output of the hall switch a is from "1" to "0" and the output of the hall switch B is "0", the hall switch a has a state change, and the state change is set to be counterclockwise rotation of the knob body 2;
state 3: at the instant when the output of the hall switch B goes from "1" to "0" and the output of the hall switch a is "1", the hall switch B changes state, and the state change is set to counterclockwise rotation of the knob body 2.
And 4: at the instant when the output of the hall switch B goes from "0" to "1" and the output of the hall switch a is "0", the hall switch B changes state, and the state change is set to counterclockwise rotation of the knob body 2.
Principle two
The combination is set as follows:
combination 1: the Hall switch A outputs 1, and the Hall switch B outputs 1.
And (3) combination 2: the Hall switch A outputs '0', and the Hall switch B outputs '1'.
And (3) combination: the Hall switch A outputs '0', and the Hall switch B outputs '0'.
And (4) combination: the Hall switch A outputs 1, and the Hall switch B outputs 0.
When the knob body 2 rotates clockwise, the codes of the Hall switch A and the Hall switch B change according to the sequence of the combination 1-2-3-4-1, and when the knob body 2 rotates counterclockwise, the codes of the Hall switch A and the Hall switch B change according to the sequence of the combination 1-4-3-2-1.
The inductive switch knob provided by the embodiment detects the pulse edge and the level state of the first hall switch at the same time, on one hand, when the level state of any one of the two first hall switches changes, the rotating direction of the rotating body can be judged; on the other hand, the rotation direction of the rotating body may be determined based on changes in the level states of the two first hall switches. And the requirement for detecting the jump edge of the single chip microcomputer is higher, and the requirement for detecting the level state is lower, so that the requirement for the single chip microcomputer is reduced by the inductive switch knob provided by the embodiment.
The utility model provides an inductive switch knob, including circuit board and the knob main part that the components of a whole that can function independently set up, simple structure and easy to maintain to possess rotation detection subassembly and initial point determine module simultaneously, can accurately judge the direction of rotation and the rotation angle of knob main part, the commonality is stronger, is favorable to the realization of coding method and user experience's promotion.
Example 2
The embodiment provides a terminal device, which comprises an operation panel and the inductive switch knob provided in embodiment 1, wherein the inductive switch knob is arranged on the operation panel. Specifically, the circuit board and the knob body included in the inductive switch knob may be respectively disposed on two planes opposite to the operation panel, for example, may be respectively disposed on a left plane and a right plane of the operation panel, and for example, may be respectively disposed on an upper plane and a lower plane of the operation panel.
The terminal device provided by the embodiment can be realized as a gas stove and other devices which can be suitable for the induction switch knob, and due to the adoption of the induction switch knob which is simple in structure and easy to maintain and provided by the embodiment 1, the rotation direction and the rotation angle of the induction switch knob can be accurately judged, the universality is high, and the realization of a coding method and the improvement of user experience are facilitated.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (10)
1. An inductive switch knob is characterized by comprising a circuit board, a knob body, a rotation detection assembly and an origin detection assembly; wherein:
the circuit board is arranged opposite to the knob body and is respectively and electrically connected with the rotation detection assembly and the origin detection assembly;
the rotation detection assembly is used for detecting the rotation direction and the rotation angle of the knob body;
the origin detection component is used for detecting whether the knob main body is located at an origin position.
2. The inductive switch knob of claim 1, wherein said rotation sensing assembly includes a plurality of first hall switches and a plurality of first permanent magnets; wherein:
the first Hall switches are arranged on the circuit board, electrically connected with the circuit board and used for triggering pulse signals when the first permanent magnets are detected;
the first permanent magnets are arranged inside the knob main body and rotate together with the knob main body.
3. The inductive switch knob of claim 2, wherein said rotation detection assembly includes two of said first hall switches and at least two of said first permanent magnets; wherein:
an included angle formed by the two first Hall switches and the rotating center of the knob main body is smaller than an included angle formed by the two adjacent first permanent magnets and the rotating center.
4. The inductive switch knob of claim 3, wherein said two first Hall switches are distributed on a same arc centered on said center of rotation.
5. The inductive switch knob of claim 4, wherein two of said first Hall switches are disposed at end positions and at intermediate positions of said arc, respectively.
6. The inductive switch knob of claim 3, wherein a plurality of said first permanent magnets are evenly distributed along a circumference centered about said center of rotation.
7. The induction switch knob of claim 6, wherein said first permanent magnet is arc-shaped;
the first permanent magnets occupy the same proportion of the circumference as the interval between two adjacent first permanent magnets.
8. The inductive switch knob of claim 1, wherein said circuit board includes a third permanent magnet and said knob body includes a fourth permanent magnet;
the third permanent magnet and the fourth permanent magnet are used for aligning the circuit board with the knob main body.
9. The inductive switch knob of claim 1, wherein said origin detection assembly includes a second hall switch and a second permanent magnet; wherein:
the second Hall switch is arranged on the circuit board, is electrically connected with the circuit board and is used for triggering a pulse signal when the second permanent magnet is detected;
the second permanent magnet is arranged in the knob main body and rotates together with the knob main body;
and/or the presence of a gas in the gas,
the circuit board and the knob body are separately arranged.
10. A terminal device, characterized by comprising an operation panel and the inductive switch knob according to any one of claims 1 to 9; wherein:
the inductive switch knob is arranged on the operation panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120526872.7U CN214480534U (en) | 2021-03-10 | 2021-03-10 | Inductive switch knob and terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120526872.7U CN214480534U (en) | 2021-03-10 | 2021-03-10 | Inductive switch knob and terminal equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214480534U true CN214480534U (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120526872.7U Active CN214480534U (en) | 2021-03-10 | 2021-03-10 | Inductive switch knob and terminal equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214480534U (en) |
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2021
- 2021-03-10 CN CN202120526872.7U patent/CN214480534U/en active Active
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