CN214504260U - Rotary knob - Google Patents
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- CN214504260U CN214504260U CN202121184618.XU CN202121184618U CN214504260U CN 214504260 U CN214504260 U CN 214504260U CN 202121184618 U CN202121184618 U CN 202121184618U CN 214504260 U CN214504260 U CN 214504260U
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Abstract
The utility model provides a knob relates to control switch technical field. The knob comprises a rotating piece, a fixed shell and a spacing detection structure; one end of the rotating piece is rotatably connected in the fixed shell, and a plurality of angle detection positions distributed in an annular array shape are arranged on the end face of the end of the rotating piece; the interval detection structure is arranged in the fixed shell and is opposite to the end face of the end part of the rotating piece, which is rotatably connected with the fixed shell, and the interval detection structure is used for sequentially detecting a plurality of angle detection positions in the rotation process of the rotating piece so as to calculate the rotation angle of the rotating piece. The utility model provides a knob utilizes interval detection structure and angle detection position to mutually support, can detect out the rotation angle of knob, need not use the quick angle sensor of magnetism, and then the cost is reduced and the reliability has been promoted.
Description
Technical Field
The utility model belongs to the technical field of control switch technique and specifically relates to a knob is related to.
Background
At present, most of switches adopted by the electric appliances are mechanical buttons or touch buttons, but the switches have poor touch feeling and feedback experience, and the knobs have clear touch feeling and powerful feedback, so that the knobs are more and more widely applied.
The existing knob is a magnetic suction knob which can be connected with an electric appliance in a magnetic suction mode. When the magnetic knob is used, it is often necessary to detect the rotation angle of the magnetic knob to control related components in the electrical appliance to perform related functions. The conventional magnetic knob generally detects a rotation angle by using a magnetic angle sensor installed therein.
However, the magneto-dependent angle sensor has high cost, is easy to be interfered by electromagnetic waves and has low reliability.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a knob to alleviate knobs such as the knob is inhaled to magnetism that exists among the prior art and utilize the quick angle sensor of magnetism that installs in its inside to detect rotation angle usually, but the quick angle sensor of magnetism cost is higher, and easily receives electromagnetic interference, the technical problem that the reliability is low.
In a first aspect, the present invention provides a knob, comprising a rotating member, a stationary housing and a spacing detection structure;
one end of the rotating piece is rotatably connected inside the fixed shell, and the end face of the end of the rotating piece is provided with a plurality of angle detection positions distributed in an annular array;
the interval detection structure is arranged in the fixed shell and is opposite to the end face of the end part of the rotating piece, which is rotatably connected with the fixed shell, and the interval detection structure is used for sequentially detecting a plurality of angle detection positions in the rotation process of the rotating piece so as to calculate the rotation angle of the rotating piece.
In an alternative embodiment, the end surface of the rotating member, on which the angle detection position is provided, is further provided with a plurality of direction detection positions distributed along the circumferential direction of the rotating member;
the interval detection structure is used for sequentially detecting a plurality of direction detection positions in the rotation process of the rotating piece so as to judge the rotation direction of the rotating piece.
In an optional embodiment, the direction detection positions are distributed according to a preset radial position rule and/or an axial position rule, and the radial position rule and the axial position rule are used for distinguishing the rotation direction of the rotating member.
In an alternative embodiment, the radial position rule is: the direction detection positions are arranged at equal intervals, and each direction detection position corresponds to each group of adjacent two non-intermediate positions between the angle detection positions in sequence.
In an alternative embodiment, the distance between two adjacent angle detection positions is equal to the distance between two adjacent direction detection positions.
In an alternative embodiment, the axial position rule is: each direction detection position is in a step shape, and the direction detection positions are connected in a continuous step-down mode along the clockwise direction or the anticlockwise direction.
In an alternative embodiment, the radial position rule is: the distance between two adjacent direction detection bits in the plurality of direction detection bits is gradually decreased and changed along the clockwise direction or the anticlockwise direction.
In an alternative embodiment, the pitch detection structure includes a first pitch detector for detecting the angle detection bits and a second pitch detector for detecting the direction detection bits.
In an alternative embodiment, the ring formed by the angle detection position is located inside the ring formed by the direction detection position, and the two rings are concentrically arranged.
In an alternative embodiment, the projections of the angle detection position and the direction detection position on the plane where the end face of the rotating member is located are both rectangular;
the first distance detector is a distance sensor, the length of a sensing part of the first distance detector is smaller than the length of the angle detection position, and the width of the sensing part of the first distance detector is equal to the width of the angle detection position;
the second distance detector is a distance sensor, the length of a sensing component of the second distance detector is smaller than the length of the direction detection position, and the width of the sensing component of the second distance detector is equal to the width of the direction detection position.
In an alternative embodiment, the angle detection position and the direction detection position are both grooves provided on an end surface of the rotary member.
In an alternative embodiment, the fixing case is provided with a magnet for attracting and connecting with a magnet on a panel of the external appliance, so that the fixing case can be attached to the panel of the external appliance.
The utility model provides a knob includes rotating member, set casing and interval detection structure, and the rotating member wherein one end is rotated and is connected inside the set casing, and the terminal surface of this end of rotating member is provided with a plurality of angle detection positions that are ring array form and distribute. The interval detection structure is installed in the fixed shell and is opposite to the end face position of the end part of the rotating piece, which is connected with the fixed shell in a rotating mode, and the interval detection structure is used for sequentially detecting a plurality of angle detection positions in the rotating piece rotation process. When using the knob that this embodiment provided, at first rotate the rotating member on the set casing, the rotating member rotation back, a plurality of angles detect the position and detect the structure through the interval in proper order and detected by the interval detection structure, detect the number that is detected of position through statistics angle this moment, and the known contained angle between the position is detected to two adjacent angles of reunion, can calculate the angle of gyration of rotating member.
Compared with the prior art, the utility model provides a knob utilizes the interval to detect the structure and mutually supports with the angle detection position, can detect out the angle of autogyration of rotating member, need not use the quick angle sensor of magnetism to can prevent to receive electromagnetic interference, practice thrift the cost, promote the testing result reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a knob according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an angle detection position and a direction detection position of a rotating member according to an embodiment of the present invention;
fig. 3 is a time waveform diagram of the interval detection structure sequentially detecting a plurality of angle detection positions and a time waveform diagram of the interval detection structure sequentially detecting a plurality of direction detection positions when the rotating member provided by the embodiment of the utility model rotates;
fig. 4 is another schematic structural diagram of an angle detection position and a direction detection position of a rotating member according to an embodiment of the present invention;
FIG. 5 is a partial side view of the multi-orientation detection position of FIG. 4;
fig. 6 is a schematic structural diagram of an angle detection position and a direction detection position of a rotating member according to an embodiment of the present invention.
Icon: 1-a rotating member; 2-a stationary shell; 20-a magnet; 3-a pitch detection structure; 30-a first pitch detector; 31-a second pitch detector; 4-angle detection position; 5-direction detection bit; 6-main control component.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Example (b):
as shown in fig. 1, the present embodiment provides a knob including a rotary member 1, a stationary case 2, and a space detecting structure 3. One end of the rotating member 1 is rotatably connected inside the fixed casing 2, and as shown in fig. 2, 4 and 6, the end surface of the end of the rotating member 1 is provided with a plurality of angle detection positions 4 distributed in an annular array. The interval detection structure 3 is installed in the fixed shell 2 and is opposite to the end face position of the end part of the rotating member 1 which is rotatably connected with the fixed shell 2, and the interval detection structure 3 is used for sequentially detecting a plurality of angle detection positions 4 in the rotation process of the rotating member 1 so as to be used for calculating the rotation angle of the rotating member 1.
When using the knob that this embodiment provided, at first rotate rotating member 1 on set casing 2, after rotating member 1 rotation, a plurality of angle detection position 4 pass through interval detection structure 3 in proper order and are detected by interval detection structure 3, detect the number that is detected of position 4 through statistics angle this moment, combine two adjacent angle detection position 4 between known contained angle, can calculate rotating member 1's rotation angle again.
Compared with the prior art, the knob that this embodiment provided utilizes interval to detect structure 3 and angle detection position 4 and mutually supports, can detect out the angle of rotation and the rotation direction of rotating member 1, need not use the quick angle sensor of magnetism to can prevent to receive electromagnetic interference, practice thrift the cost, promote the testing result reliability.
Further, the end surface of the rotor 1 on which the angle detection position 4 is provided is also provided with a plurality of direction detection positions 5 distributed along the circumferential direction of the rotor 1. The spacing detection structure 3 is used for sequentially detecting a plurality of direction detection positions 5 in the rotation process of the rotating member 1 so as to judge the rotation direction of the rotating member 1.
The plurality of direction detection positions 5 are distributed according to a preset radial position rule or an axial position rule, or the plurality of direction detection positions 5 are distributed according to both the preset radial position rule and the axial position rule. Both the radial position regulation and the axial position regulation can be used to distinguish the direction of rotation of the rotor 1.
In order to determine the rotation direction of the rotating member 1, the present embodiment preferably has a plurality of direction detection sites 5 distributed according to a predetermined radial position rule or an axial position rule.
After the rotating member 1 rotates, the plurality of direction detection positions 5 also sequentially pass through the distance detection structure 3 and are detected by the distance detection structure 3, and the plurality of direction detection positions 5 are distributed according to a preset radial position rule or an axial position rule, so that the rotation direction of the rotating member 1 can be judged according to the change of the detection time interval or the change of the detection result of the distance detection structure 3 based on the radial position rule or the axial position rule distribution.
It can be seen that the knob that this embodiment provided can also utilize interval detection structure 3 and direction to detect position 5 and mutually support, detects out the rotation direction of rotating member 1, also need not to use the quick angle sensor of magnetism, can prevent to receive electromagnetic interference, practices thrift the cost, promotes the testing result reliability.
As shown in fig. 2, the radial position rule is: the plurality of direction detection positions 5 are arranged at equal intervals, and the position of each direction detection position 5 corresponds to the non-intermediate position between each two adjacent angle detection positions 4 in each group in sequence.
The pitch detection structure 3 may include a distance sensor for detecting the angle detection position 4 and a distance sensor for detecting the direction detection position 5. Two rectangular dashed boxes are shown in fig. 2, one of which represents the projection of one of the distance sensors on the side of the rotating member 1 and the other of which represents the projection of the other distance sensor on the side of the rotating member 1.
As shown in fig. 2, when the angle between the next angle detection position 4 and the direction detection position 5 at the time midpoint is denoted by a, and the step angle is denoted by b, when the installation position of each direction detection position 5 corresponds to the non-intermediate position between each set of two adjacent angle detection positions 4 in turn, a cannot be equal to 0 or one-half b, that is, the angle detection position 4 and the direction detection position 5 cannot be overlapped in the radial direction of the rotating member 1, and the position of the direction detection position 5 cannot correspond to the intermediate position between two adjacent angle detection positions 4.
The time starting point is the last angle detection position 4 of two adjacent angle detection positions 4, the time ending point is the next angle detection position 4, and the time middle point is the direction detection position 5 corresponding to the non-middle position between the two adjacent angle detection positions 4. Then, the rotation direction of the rotating member 1 can be judged by using the time starting point, the time middle point and the time end point, and the specific judging process is as follows:
firstly, calculating the time ratio of the time spent from the time starting point to the time midpoint to the time spent from the time starting point to the time ending point; then, an included angle between the lower angle detection position 4 and the direction detection position 5 at the time midpoint is a clockwise included angle, an included angle between the upper angle detection position 4 and the direction detection position 5 at the time midpoint is an anticlockwise included angle, a clockwise angle ratio between the clockwise included angle and a preset stepping angle is calculated, and an anticlockwise angle ratio between the anticlockwise included angle and the preset stepping angle is calculated; then, judging whether the time ratio is closer to the clockwise angle ratio or the anticlockwise angle ratio, and if the time ratio is closer to the clockwise angle ratio, rotating the rotating member 1 clockwise; if the time ratio is close to the counterclockwise angle ratio, the rotating member 1 rotates counterclockwise.
The time from the time starting point to the time middle point is recorded as TaThe time from the start point to the end point of the time is denoted as TbIf the angle detection bit 4 is defined as 0 when the pitch detection mechanism 3 detects the angle detection bit 4 and the angle detection bit 4 is defined as 1, and if the direction detection bit 5 is defined as 1 when the pitch detection mechanism 3 detects the direction detection bit 5 and the direction detection bit 5 is defined as 0, the rotating member 1 generates a waveform as shown in fig. 3 during rotation.
The logic for determining the rotation direction of the rotating member 1 according to the time starting point, the time middle point and the time end point is as follows, taking the clockwise included angle as b and the counterclockwise included angle as (b-a), and referring to the waveform diagram shown in fig. 5:
starting from the time point when the angle detection position 4 leaves the spacing detection structure 3, two timers are started, i.e. from t in fig. 31The time point starts the time. When the pitch detection structure 3 detects the direction detection bit 5 (t in fig. 3)2Or t3Time point), that is, when the time reaches the time middle point, a timer is stopped, and the time used at this time is defined as TaOr Tb(ii) a When the pitch detection structure 3 continues to detect the angle detection bit 4 (t in fig. 3)4Time point), that is, when the time reaches the end of the time, another timer is stopped, and the time used at this time is defined as T0. If Ta/T0Is close to a/b, it is determined as clockwise rotation, and if T is equal tob/T0If the value of (b-a)/b is close, it is determined as counterclockwise rotation.
Wherein, the distance between two adjacent angle detection positions 4 is equal to the distance between two adjacent direction detection positions 5.
The distance between two adjacent angle detection positions 4 is equal to the distance between two adjacent direction detection positions 5, so that the rotation angle of the rotating member 1 can be calculated conveniently.
As shown in fig. 4 and 5, the axial position rule may be: each direction detection site 5 is stepped, and the plurality of direction detection sites 5 are connected in a clockwise or counterclockwise direction in a descending order.
In the rotation process of the rotating member 1, the distance detection structure 3 can sequentially detect the plurality of direction detection positions 5, and because the plurality of direction detection positions 5 are continuously connected in a descending order along the clockwise direction or the anticlockwise direction, the detection result of the distance detection structure 3 on the direction detection positions 5 can be increased or decreased progressively, and at the moment, based on the axial position rule, whether the rotating member 1 rotates clockwise or anticlockwise can be judged.
Further, as shown in fig. 4 and 5, each of the stepped direction detection positions 5 at least includes two steps, and a direction detection position 5 is disposed at a corresponding position between two adjacent angle detection positions 4, and at this time, when the rotating member 1 rotates by a preset step angle, the rotation direction of the rotating member 1 can be determined according to the detection result of the distance detection structure 3 on the direction detection position 5, and based on the above axial position rule.
In practical application, the axial position rule may also be: each direction detection position 5 is in a step shape, one direction detection position 5 is arranged between every two adjacent angle detection positions 4, and the plurality of direction detection positions 5 gradually decrease in steps along the clockwise direction or the anticlockwise direction. At this time, the loop formed by the direction detection bit 5 and the angle detection bit 4 is overlapped.
In addition, the axial position rule may also be: the plurality of direction detection positions 5 are arranged at the plurality of angle detection positions 4 in a one-to-one correspondence manner, each direction detection position 5 is groove-shaped, and the groove depth of each direction detection position 5 increases progressively in the clockwise direction or the counterclockwise direction. At this time, the angle detection position 4 and the direction detection position 5 are overlapped, and the distance detection structure 3 may include only one distance sensor, which can detect the angle detection position 4 and the direction detection position 5 simultaneously during the rotation of the rotary member 1. Based on the detection result of the distance sensor, the number of the angle detection positions 4 passing through the distance sensor can be detected, so that the rotation angle of the rotating member 1 can be calculated by combining the preset stepping angle, and the distance change of the direction detection positions 5 passing through the distance sensor can be detected to be increased or decreased gradually, so that the steering of the rotating member 1 can be judged by combining the axial position rule.
As shown in fig. 6, the radial position rule may also be: the distance between two adjacent direction detection bits 5 in the plurality of direction detection bits 5 changes in a decreasing manner in the clockwise direction or the counterclockwise direction.
The distance between two adjacent direction detection positions 5 in the plurality of direction detection positions 5 is gradually decreased and changed along the clockwise direction or the anticlockwise direction, so that when the rotating member 1 rotates, the distance detection structure 3 continuously detects the plurality of direction detection positions 5, the time is increased or decreased gradually, and the rotation direction of the rotating member 1 can be judged by combining with the radial position rule.
As shown in fig. 1, the pitch detection structure 3 includes a first pitch detector 30 and a second pitch detector 31, the first pitch detector 30 being for detecting the angle detection bits 4, and the second pitch detector 31 being for detecting the direction detection bits 5.
The pitch detection structure 3 includes a first pitch detector 30 and a second pitch detector 31 for facilitating detection of the angle detection position 4 and the direction detection position 5, respectively, thereby facilitating detection of the rotation angle and the rotation direction of the rotary 1, respectively.
As shown in fig. 2, 4 and 6, the ring shape formed by the angle detection site 4 is located inside the ring shape formed by the direction detection site 5, and the two rings are concentrically arranged.
The ring formed by the angle detection position 4 and the ring formed by the direction detection position 5 are concentrically arranged, so that the space on the side surface of the rotating member 1 is fully utilized.
As shown in fig. 2, 4 and 6, the angle detection position 4 and the direction detection position 5 are rectangular in projection on the plane where the end face of the rotary 1 is located. In order to improve the accuracy of the rotation angle of the rotating member 1 as much as possible on the premise that the angle detection position 4 and the direction detection position 5 can be detected, it is preferable that the first distance detector 30 is a distance sensor in this embodiment, the length of the sensing part of the first distance detector 30 is smaller than the length of the angle detection position 4, and the width is equal to the width of the angle detection position 4. The second distance detector 31 is a distance sensor, and the length of the sensing part of the second distance detector 31 is smaller than the length of the direction detection bit 5 and the width is equal to the width of the direction detection bit 5.
As shown in fig. 2 and 6, the angle detection position 4 and the direction detection position 5 in the present embodiment may be both grooves provided on the end surface of the rotary member 1, or may also be both protrusions.
As shown in fig. 1, a magnet 20 is provided on the stationary case 2, and the magnet 20 is configured to attract and connect with the magnet 20 on the panel of the external appliance, so that the stationary case 2 can be attached to the panel of the external appliance.
When the fixed shell 2 is provided with the magnet 20, the knob in this embodiment is a magnetic knob, and the knob and the external electrical appliance are easy to mount and dismount.
As shown in fig. 1, the knob provided in this embodiment may further include a main control assembly 6, the main control assembly 6 is installed in the fixed shell 2, the first distance detector 30 and the second distance detector 31 are both connected to the main control assembly 6, and the main control assembly 6 is configured to calculate a rotation angle of the rotating member 1 and determine a rotation direction of the rotating member 1 according to detection results of the first distance detector 30 and the second distance detector 31.
The main control assembly 6 may be a single chip microcomputer or a programmable logic controller.
Further, the knob provided by this embodiment may further include a communication component, the communication component is installed in the fixed shell 2 and connected to the main control component 6, the communication component may also be connected to a control system of an external electrical appliance, and the communication component is configured to receive rotation angle information of the rotating member 1 calculated by the main control component 6 and rotation direction information of the rotating member 1 determined, and may send the information to the control system of the external electrical appliance, so that the control system of the external electrical appliance may control related elements in the external electrical appliance to perform related functions according to the information.
Wherein, the communication subassembly can be wireless communication module such as bluetooth module, wifi module, and correspondingly, the connected mode between the control system of main control assembly 6 and outside electrical apparatus is wireless communication modes such as bluetooth, wifi.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (12)
1. A knob is characterized by comprising a rotating piece (1), a fixed shell (2) and a spacing detection structure (3);
one end of the rotating piece (1) is rotatably connected inside the fixed shell (2), and the end face of the end of the rotating piece (1) is provided with a plurality of angle detection positions (4) distributed in an annular array;
the interval detection structure (3) is installed in the fixed shell (2) and is opposite to the end face position of the end part, rotatably connected with the fixed shell (2), of the rotating piece (1), and the interval detection structure (3) is used for sequentially detecting the angle detection positions (4) in the rotation process of the rotating piece (1) so as to be used for calculating the rotation angle of the rotating piece (1).
2. The knob according to claim 1, characterized in that the end surface of the rotary member (1) provided with the angle detection locations (4) is further provided with a plurality of direction detection locations (5) distributed along the circumferential direction of the rotary member (1);
the interval detection structure (3) is used for sequentially detecting a plurality of direction detection positions (5) in the rotation process of the rotating piece (1) so as to judge the rotation direction of the rotating piece (1).
3. Knob according to claim 2, wherein a plurality of said direction detection sites (5) are distributed according to a preset radial position rule and/or axial position rule, said radial position rule and said axial position rule being used to distinguish the rotation direction of said rotary member (1).
4. The knob of claim 3 wherein the radial position rule is: the direction detection positions (5) are arranged at equal intervals, and the position of each direction detection position (5) corresponds to the non-middle position between every two adjacent angle detection positions (4) of each group in sequence.
5. The knob according to claim 4, characterized in that the distance between two adjacent angle detection sites (4) is equal to the distance between two adjacent direction detection sites (5).
6. The knob of claim 3 wherein the axial position rule is: each direction detection position (5) is in a step shape, and the direction detection positions (5) are connected in a descending manner continuously along the clockwise direction or the anticlockwise direction.
7. The knob of claim 3 wherein the radial position rule is: the distance between two adjacent direction detection positions (5) in the plurality of direction detection positions (5) is gradually reduced and changed along the clockwise direction or the anticlockwise direction.
8. Knob according to claim 2, wherein said pitch detection structure (3) comprises a first pitch detector (30) and a second pitch detector (31), said first pitch detector (30) being adapted to detect said angle detection bit (4) and said second pitch detector (31) being adapted to detect said direction detection bit (5).
9. The knob according to claim 8, characterized in that the projections of the angle detection position (4) and the direction detection position (5) on the plane of the end face of the rotating member (1) are both rectangular;
the first distance detector (30) is a distance sensor, the length of a sensing part of the first distance detector (30) is smaller than the length of the angle detection position (4), and the width of the sensing part is equal to the width of the angle detection position (4);
the second distance detector (31) is a distance sensor, the length of a sensing component of the second distance detector (31) is smaller than the length of the direction detection position (5), and the width is equal to the width of the direction detection position (5).
10. Knob according to any one of claims 2-9, wherein the ring formed by the angle sensing location (4) is located inside the ring formed by the direction sensing location (5), and the two rings are arranged concentrically.
11. Knob according to any of claims 2-9, wherein the angle detection site (4) and the direction detection site (5) are both grooves provided on the end surface of the rotary member (1).
12. Knob according to any one of claims 1 to 9, characterised in that a magnet (20) is provided on said fixed shell (2), said magnet (20) being intended to attract and connect with a magnet (20) on the panel of an external electric appliance, so that said fixed shell (2) can be applied on the panel of the external electric appliance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121184618.XU CN214504260U (en) | 2021-05-28 | 2021-05-28 | Rotary knob |
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| CN202121184618.XU CN214504260U (en) | 2021-05-28 | 2021-05-28 | Rotary knob |
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| CN214504260U true CN214504260U (en) | 2021-10-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114216393A (en) * | 2022-02-21 | 2022-03-22 | 泉州昆泰芯微电子科技有限公司 | Rotation angle detection device, knob, learning tool, and entertainment tool |
| CN114542879A (en) * | 2022-02-28 | 2022-05-27 | 泉州昆泰芯微电子科技有限公司 | Rotation angle recognition device, knob, learning tool, and entertainment tool |
-
2021
- 2021-05-28 CN CN202121184618.XU patent/CN214504260U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114216393A (en) * | 2022-02-21 | 2022-03-22 | 泉州昆泰芯微电子科技有限公司 | Rotation angle detection device, knob, learning tool, and entertainment tool |
| CN114542879A (en) * | 2022-02-28 | 2022-05-27 | 泉州昆泰芯微电子科技有限公司 | Rotation angle recognition device, knob, learning tool, and entertainment tool |
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