CN216645222U - Rotation recognition device, knob, learning tool, and entertainment tool - Google Patents

Abstract

The application provides a rotatory recognition device, knob, learning tools and amusement apparatus, rotatory recognition device includes: a base; a first rotating member; a plurality of first markers spaced about the axis of rotation of the first rotating member; a first magnet mounted to the first rotating member; a plurality of first magnetic induction elements fixed relative to the base and distributed at intervals along the movement path of the first magnet, wherein the first magnet is used for approaching and triggering the first magnetic induction elements; the first marks are arranged on the first rotating piece, the spacing angle of the adjacent first marks is changed according to a first preset rule along the anticlockwise direction, and the spacing angle of the adjacent first magnetic induction elements is changed according to a first preset rule along the clockwise direction; or the first marks are arranged on the base, and the change rule of the interval angle of the adjacent first marks is consistent with the change rule of the interval angle of the adjacent first magnetic induction elements. The rotary recognition device adopts a magnetic induction mode, and can improve use reliability and safety.

Description

Rotation recognition device, knob, learning tool, and entertainment tool

Technical Field

The application belongs to the technical field of magnetic induction, more specifically relates to a rotary recognition device, knob, learning tool and amusement tool.

Background

In some application scenarios where it is necessary to identify the rotation angle, for example, a knob for adjusting the rotation speed of a fan, it is generally necessary to identify the angle corresponding to the stop position after the rotation of the rotating member.

Currently, a conventional angle recognition device usually employs a potentiometer, and determines a rotation angle according to an output resistance of the potentiometer. For example, patent document CN214837227U discloses a fan circuit that uses a potentiometer as a speed control module.

However, the sliding piece of the potentiometer generates an arc in the sliding process, which impacts a circuit element and is easy to cause a fault or a safety problem, and the potentiometer needs to be conducted for a long time during operation, so that the power consumption is large.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a rotary recognition device, a knob, a learning tool and an entertainment tool, so as to solve the technical problem that the angle recognition device in the prior art is prone to failure or safety during working.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: there is provided a rotation recognition device including:

a base;

a first rotating member rotatable with respect to the base;

a plurality of first markers spaced about the axis of rotation of the first rotating member;

the first magnet is arranged on the first rotating piece and rotates along with the first rotating piece, and the first magnet is used for generating a magnetic field;

a plurality of first magnetic induction elements fixed relative to the base and spaced apart along a path of movement of the first magnet for approaching and triggering the first magnetic induction elements;

the first marks are arranged on the first rotating piece, the spacing angle of the adjacent first marks changes along the anticlockwise direction according to a first preset rule, and the spacing angle of the adjacent first magnetic induction elements changes along the clockwise direction according to the first preset rule; or the first marks are arranged on the base, and the change rule of the interval angle of the adjacent first marks is consistent with the change rule of the interval angle of the adjacent first magnetic induction elements.

Optionally, a plurality of the first marks are distributed at equal intervals.

Optionally, the magnetic induction device further comprises a second rotating member, a second magnet and a plurality of second magnetic induction elements, the first mark is arranged on the first rotating member, the second rotating member can rotate relative to the base, the second rotating member is provided with a plurality of second marks, the plurality of second marks are distributed at intervals around the rotation axis of the second rotating member, any one of the second marks can be aligned with any one of the first marks, the second magnet is mounted on the second rotating member and rotates along with the second rotating member, the second magnet is used for generating a magnetic field, the second magnetic induction elements are fixed relative to the base, the plurality of second magnetic induction elements are distributed at intervals along the movement path of the second magnet, and the interval angle between adjacent second marks is changed according to a second preset rule along the counterclockwise direction, and the interval angle of the adjacent second magnetic induction element is changed according to the second preset rule along the clockwise direction, and the second magnet is used for approaching and triggering the second magnetic induction element.

Optionally, the second rotating member is annular and is disposed radially outside the first rotating member; alternatively, the second rotating member is provided on one side of the first rotating member in the axial direction.

Optionally, a plurality of the first magnetic induction elements are disposed on one circuit board, and a plurality of the second magnetic induction elements are disposed on another circuit board; or, a plurality of the first magnetic induction elements and a plurality of the second magnetic induction elements are arranged on the same circuit board.

Optionally, the display module is disposed inside a track circle formed by the first identifier due to the rotation motion, and the display module is configured to display content related to information formed by aligning the first identifier and the second identifier.

Optionally, the base further comprises a viewing auxiliary part connected with the base, the viewing auxiliary part is located on one side, close to the user, of the first mark and the second mark, the viewing auxiliary part is provided with a viewing window, and the first mark and the second mark which are in an aligned state are both located in the viewing window.

Optionally, the magnetic induction apparatus further comprises a third rotating member, a third magnet and a plurality of third magnetic induction elements, the third rotating member is rotatable relative to the base, the third rotating member is provided with a plurality of third marks, the plurality of third marks are distributed at intervals around the rotation axis of the third rotating member, any one of the third marks can be aligned with any one of the second marks, the third magnet is mounted on the third rotating member and rotates along with the third rotating member, the third magnet is used for generating a magnetic field, the third magnetic induction elements are fixed relative to the base, the plurality of third magnetic induction elements are distributed at intervals along the movement path of the third magnet, the interval angle between adjacent third marks varies according to a third preset rule along the counterclockwise direction, the interval angle between adjacent third magnetic induction elements varies according to the third preset rule along the clockwise direction, the third magnet is used for approaching and triggering the third magnetic induction element.

Optionally, the second rotating member is annular and disposed radially outward of the first rotating member, and the third rotating member is annular and disposed radially outward of the second rotating member.

Optionally, the magnetic induction device further comprises a support, the support is mounted on the base, the first rotating member, the second rotating member and the third rotating member are received on one side of the support, the first magnetic induction element, the second magnetic induction element and the third magnetic induction element are located on the other side of the support, and the support is made of a magnetically permeable material.

Optionally, the support member is provided with a first annular rib and a second annular rib, the first annular rib is located between the first rotating member and the second rotating member, and the second annular rib is located between the second rotating member and the third rotating member.

Optionally, the support member is further provided with an inner ring protrusion and an outer ring protrusion, the inner ring protrusion is located on the inner side of the first annular rib, the outer ring protrusion is located on the outer side of the second annular rib, the inner ring protrusion and the first annular rib form a first guide groove for accommodating the first rotating member, the first annular rib and the second annular rib form a second guide groove for accommodating the second rotating member, and the second annular rib and the outer ring protrusion form a third guide groove for accommodating the third rotating member.

Optionally, the first magnetic induction element, the second magnetic induction element, and the third magnetic induction element include any one or more of a reed switch, a hall sensor, an anisotropic magnetoresistance, a giant magnetoresistance, and a tunneling magnetoresistance.

The present application further provides a knob, a learning appliance and an amusement appliance, the knob, the learning appliance and the amusement appliance each comprising a rotation recognition device of any of the above.

The application provides a rotatory recognition device's beneficial effect lies in: compared with the prior art, the rotary recognition device of this application includes the base, first rotating member, first magnet and first magnetic induction component, first rotating member drives first magnet rotatory, according to the position of the first magnetic induction component who is triggered by first magnet, the turned angle of first rotating member can be recalculated, thereby learn the position (if first rotating member is located to first sign) that uses the base as the reference of first sign, or learn the angular position (if the base is located to first sign) that uses first sign/base as the reference of first rotating member, the mode of magnetic induction has non-contact's characteristics, can improve rotary recognition device's use reliability and security.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic diagram of a rotation recognition device in a first position state according to a first embodiment of the present application;

fig. 2 is a schematic diagram of the rotation recognition device in a second position state according to the first embodiment of the present application;

fig. 3 is a schematic diagram illustrating the rotation recognition device in a third position according to the first embodiment of the present application;

fig. 4 is a schematic view of a rotation recognition device according to a second embodiment of the present application;

fig. 5 is a top view of a rotary recognition device provided in a third embodiment of the present application;

FIG. 6 is a bottom view of three rotating members provided in a third embodiment of the present application;

fig. 7 is an exploded view of a rotary recognition device according to a third embodiment of the present application;

fig. 8 is a sectional view of a rotary recognition device provided in a third embodiment of the present application;

fig. 9 is a schematic diagram of a rotation recognition device according to a fourth embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

100-rotation recognition means, 110-base, 121-first rotation member, 131-first magnet, 141-first magnetic induction element, 151-first identification,

300-rotary recognition means, 310-base, 311-base, 312-central mounting, 313-cover, 321-first rotation, 322-second rotation, 323-third rotation, 331-first magnet, 332-second magnet, 333-third magnet, 341-first magnetic induction element, 342-second magnetic induction element, 343-third magnetic induction element, 351-first marker, 352-second marker, 353-third marker, 360-support, 361-inner ring projection, 362-first annular rib, 363-second annular rib, 364-outer ring projection, 372-display module, 380-viewing aid, 381-viewing window,

421-first rotation member, 422-second rotation member, 431-first magnet, 432-second magnet, 441-first magnetic induction element, 442-second magnetic induction element, 451-first marker, 452-second marker.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Fig. 1, 4, 5 and 9 respectively show different embodiments of the rotary recognition device provided by the present application.

Referring to fig. 1 to fig. 3, a rotation recognition apparatus 100 according to an embodiment of the present application will be described. The rotation recognition device 100 includes: the magnetic sensor includes a base 110, a first rotation member 121, a first magnet 131, and a first magnetic induction element 141.

The first rotating member 121 may rotate with respect to the base 110; a plurality of first markers 151 are distributed at intervals around the axis of rotation of the first rotating member 121; the first magnet 131 is mounted on the first rotating member 121 and rotates with the first rotating member 121, and the first magnet 131 is used for generating a magnetic field; a plurality of first magnetic induction elements 141 fixed with respect to the base 110, distributed at intervals along the movement path of the first magnet 131, the first magnet 131 being adapted to approach and activate the first magnetic induction elements 141; the first marks 151 are arranged on the first rotating member 121, the spacing angle between adjacent first marks 151 changes according to a first preset rule along the counterclockwise direction, and the spacing angle between adjacent first magnetic induction elements 141 changes according to a first preset rule along the clockwise direction; alternatively, the first marks 151 are provided on the base 110, and the change rule of the angle between adjacent first marks 151 is identical to the change rule of the angle between adjacent first magnetic induction elements 141.

The rotation recognition device 100 provided by the application has the following beneficial effects: compared with the prior art, the rotary recognition device 100 of the present application includes the base 110, the first rotating member 121, the first magnet 131 and the first magnetic induction element 141, the first rotating member 121 drives the first magnet 131 to rotate, and according to the position of the first magnetic induction element 141 triggered by the first magnet 131, the rotation angle of the first rotating member 121 can be calculated, so as to know the position of the first mark 151 with reference to the base 110 (assuming that the first mark 151 is disposed on the first rotating member 121, see fig. 1), or know the angular position of the first rotating member 121 with reference to the first mark 151/the base 110 (assuming that the first mark 151 is disposed on the base 110, see fig. 4), the magnetic induction manner has a non-contact characteristic, and can improve the use reliability and safety of the rotary recognition device 100.

The base 110 may be formed of multiple parts and serves as a mounting base for the components of the rotary recognition apparatus 100.

A plurality of first marks 151 are spaced apart around the axis of rotation of the first rotating member 121. The first mark 151 may be disposed on the first rotating member 121 or on the base 110.

Referring to fig. 1 to 3, in some examples, the first marks 151 are disposed on the first rotating member 121, that is, the first marks 151 rotate along with the first rotating member 121, a spacing angle between adjacent first marks 151 changes according to a first preset rule along a counterclockwise direction, and a spacing angle between adjacent first magnetic induction elements 141 changes according to a first preset rule along a clockwise direction. The spacing angle of the adjacent first markers 151 can be changed by 15 ° and 30 ° in the counterclockwise direction, and the spacing angle of the adjacent first magnetic induction elements 141 can be changed by 15 ° and 30 ° in the clockwise direction. In the first position state, with the base 110 as a reference, a of the first flag 151 is at the leftmost position, and the first magnet 131 is aligned with and triggers the first magnetic induction element 141 (U); the first rotating member 121 rotates clockwise by 15 ° to the second position, B of the first flag 151 is at the leftmost position, and the first magnet 131 aligns with and triggers the first magnetic induction element 141 (V); the first rotating member 121 is further rotated clockwise by 30 ° to reach the third position, C of the first flag 151 is at the leftmost position, and the first magnet 131 is aligned with and triggers the first magnetic induction element 141 (W). The control system can recognize the first flag 151 at the leftmost position according to the triggering of the first magnet 131.

Referring to fig. 4, in other examples, the first marks 151 are disposed on the base 110, and the interval angle of the adjacent first marks 151 is changed according to the interval angle of the adjacent first magnetic induction elements 141. The first mark 151 and the first magnetic induction element 141 are fixed relative to the base 110, and the positions of the first mark 151 and the first magnetic induction element 141 can correspond to each other one by one, so that the control system can identify the first mark 151 to be aligned by the user according to the triggering condition of the first magnet 131.

In some examples, a plurality of the first magnetic induction elements 151 may also be distributed at equal intervals, and correspondingly, a plurality of the first magnetic induction elements 141 are also distributed at equal intervals accordingly.

The first magnetic body 131 is used for generating a magnetic field and triggering the first magnetic induction element 141, and may be a permanent magnet, such as a magnet.

Referring to fig. 5 to 8, a rotary recognition apparatus 300 according to an embodiment of the present application will now be described. The rotation recognition device 300 includes: the display module includes a base 310, a first rotating member 321, a second rotating member 322, a third rotating member 323, a first magnet 331, a second magnet 332, a third magnet 333, a first magnetic induction element 341, a second magnetic induction element 342, a third magnetic induction element 343, a display module 372, a viewing aid 380, a support 360, and a center mount 312.

In some examples, the first marker 351 is disposed on the first rotating member 321, the second rotating member 322 is rotatable relative to the base 310, the second rotating member 322 is provided with a plurality of second markers 352, the plurality of second markers 352 are spaced around the rotation axis of the second rotating member 322, any one of the second markers 352 can be aligned with any one of the first markers 351, the second magnet 332 is mounted on the second rotating member 322 and rotates along with the second rotating member 322, the second magnet 332 is used for generating a magnetic field, the second magnetic induction elements 342 are fixed relative to the base 310, the plurality of second magnetic induction elements 342 are spaced along the movement path of the second magnet 332, and the spacing angle of the adjacent second marks 352 changes according to a second preset rule along the counterclockwise direction, the spacing angle of the adjacent second magnetic induction elements 342 changes according to a second preset rule along the clockwise direction, and the second magnet 332 is used for approaching and triggering the second magnetic induction elements 342. The second predetermined rule may be referenced to the first predetermined rule. The second rotating member 322 drives the second magnet 332 to rotate, and the rotation angle of the second rotating member 322 can be calculated according to the position of the second magnetic induction element 342 triggered by the second magnet 332, so as to know the position of the second mark 352 with reference to the base 310, that is, the alignment condition of the first mark 351 and the second mark 352.

Referring to fig. 5, in some examples, second rotating member 322 is annular and is disposed radially outward of first rotating member 321. The first mark 351 and the second mark 352 may be provided on the end surfaces of the first rotating member 321 and the second rotating member 322, respectively; the first rotating member 321 may be solid or ring-shaped.

Referring to fig. 9, in other examples, the second rotating member 422 is provided at one side of the first rotating member 421 in the axial direction. The first rotating member 421 and the second rotating member 422 may be sequentially arranged along the axial direction, and the first mark 451 and the second mark 452 may be respectively provided on the outer circumferential surfaces of the first rotating member 421 and the second rotating member 422. The first magnet 431 is connected with the first rotating member 421 and rotates with the first rotating member 421 to trigger the first magnetic induction element 441, and the second magnet 432 is connected with the second rotating member 422 and rotates with the second rotating member 422 to trigger the second magnetic induction element 442.

Referring to fig. 7, in some examples, the plurality of first magnetic induction elements 341 and the plurality of second magnetic induction elements 342 are provided on the same circuit board. The magnetic induction elements can be arranged on the same circuit board, so that the signal transmission performance can be improved and the cost can be reduced. The circuit board may be laid on the bottom of the cavity of the base 310.

In other examples, the plurality of first magnetic induction elements 341 are disposed on one circuit board, and the plurality of second magnetic induction elements 342 are disposed on another circuit board. The two circuit boards may be both annular and may be arranged according to the specific configuration of the rotary recognition device 300.

The display module 372 is disposed inside a track circle formed by the first mark 351 due to the rotation motion, and the display module 372 is used for displaying the content related to the information formed by the alignment of the first mark 351 and the second mark 352. In some examples, the first rotating member 321 may have a ring shape, the first mark 351 is disposed on the ring, and the display module 372 is disposed in the ring. In other examples, the first rotating member 321 may be solid, and the display module 372 is disposed on the first rotating member 321 and located inside a track circle formed by the first indicator 351 due to the rotating motion. The display module 372 is used for displaying the content related to the information formed by aligning the respective marks. In some examples, for the case that the number of the rotating members is two, the first indicator 351 may be an exponent (number), the second indicator 352 may be a base number (number), and the display module 372 may display a formula of the exponential operation and an operation result thereof. The rotation recognition apparatus 300 may further be provided with a speaker for audibly indicating contents related to information formed by aligning the first marker 351 and the second marker 352, for example, a result of an exponential operation. The display module 372 may be a display screen.

A viewing aid 380 is coupled to the base 310, the viewing aid 380 being positioned on a side of the first and second indicia 351, 352 proximate to the user, the viewing aid 380 having a viewing window 381, the first and second indicia 351, 352 in alignment being positioned within the viewing window 381. The viewing aid 380 may assist or prompt the user to view the indicia in an aligned state. During the use, the user rotates each rotating member according to the demand for the target identification is located the observation window, and control system can discern the sign that is located the observation window through the turned angle who detects each rotating member, and display module 372 can show the content relevant with the information that the sign alignment formed.

The third rotating member 323 is rotatable relative to the base 310, the third rotating member 323 is provided with a plurality of third marks 353, the plurality of third marks 353 are distributed at intervals around a rotation axis of the third rotating member 323, any one of the third marks 353 can be aligned with any one of the second marks 352, the third magnet 333 is mounted on the third rotating member 323 and rotates along with the third rotating member 323, the third magnet 333 is used for generating a magnetic field, the third magnetic induction element 343 is fixed relative to the base 310, the plurality of third magnetic induction elements 343 are distributed at intervals along a movement path of the third magnet 333, and an interval angle of adjacent third marks 353 is changed according to a third preset rule along a counterclockwise direction, an interval angle of adjacent third magnetic induction elements 343 is changed according to the third preset rule along a clockwise direction, and the third magnet 333 is used for approaching and triggering the third magnetic induction elements 343. The third preset rule may be referenced to the first preset rule. The third rotating member 323 drives the third magnet 333 to rotate, and the rotation angle of the third rotating member 323 can be calculated according to the position of the third magnetic induction element 343 triggered by the third magnet 333, so as to know the position of the third mark 353 with reference to the base 310, that is, the alignment condition of the second mark 352 and the third mark 353 can be known. The first preset rule, the second preset rule and the third preset rule can be represented as arrangement rules with equal intervals and can also be represented as irregular changes.

In some examples, the second rotating member 322 is annular and disposed radially outward of the first rotating member 321, and the third rotating member 323 is annular and disposed radially outward of the second rotating member 322. In other examples, the rotating members may be arranged in sequence along the axial direction.

The magnet rotates along with the rotating piece, one of the magnetic induction elements is selectively triggered from the plurality of magnetic induction elements, and the magnetic triggering angle detection mode has multiple advantages. The rotating parts can work independently, the structure of the rotating parts and the structure for supporting and installing the rotating parts can be simplified, and the number of the rotating parts can be expanded according to application scenes. In addition, the bearing structure of each rotating member can be mutually independent, so a gap can be reserved between the adjacent rotating members, and the rotating members can not accidentally drive the adjacent rotating members to rotate in the rotating process, so that misoperation is avoided. For example, when the second rotating member 322 is rotated, the first rotating member 321 and the third rotating member 323 cannot be accidentally carried by the second rotating member 322.

The support 360 is mounted on the base 310, the first rotating member 321, the second rotating member 322, and the third rotating member 323 are received on one side of the support 360, the first magnetic induction element 341, the second magnetic induction element 342, and the third magnetic induction element 343 are located on the other side of the support 360, and the support 360 is made of a magnetically permeable material. The rotating members are received by the supporting member 360 and can rotate independently of each other. The magnet is installed on the rotating member, and the magnet and the magnetic induction element are separated at both sides of the support member 360, and a magnetic field generated by the magnet can pass through the support member 360. The support 360 is made of a magnetically permeable material, which may be plastic, glass, wood, aluminum, or copper. In some cases, the magnetically permeable material may be a diamagnetic material or a paramagnetic material.

The supporting member 360 is provided with a first annular rib 362 and a second annular rib 363, the first annular rib 362 being located between the first rotating member 321 and the second rotating member 322, and the second annular rib 363 being located between the second rotating member 322 and the third rotating member 323. The first annular rib 362 can separate the first rotating member 321 from the second rotating member 322, and the second annular rib 363 can separate the second rotating member 322 from the third rotating member 323, so as to avoid accidentally driving the adjacent rotating members when rotating one of the rotating members.

The supporting member 360 may further include an inner protrusion 361 and an outer protrusion 364, the inner protrusion 361 is located inside the first annular rib 362, the outer protrusion 364 is located outside the second annular rib 363, the inner protrusion 361 and the first annular rib 362 form a first guide slot for accommodating the first rotating member 321, the first annular rib 362 and the second annular rib 363 form a second guide slot for accommodating the second rotating member 322, and the second annular rib 363 and the outer protrusion 364 form a third guide slot for accommodating the third rotating member 323. Therefore, the stability and smoothness of the rotation of each rotating member can be improved.

The first rotating member 321 is annular, the center mounting member 312 is disposed inside the first rotating member 321, the center mounting member 312 is fixed to the base 310, and the display module 372 is mounted to the center mounting member 312. The center mount 312 may be fixedly mounted to the support 360.

The first magnetic induction element 341, the second magnetic induction element 342, and the third magnetic induction element 343 include any one or more of a reed switch, a hall sensor, an Anisotropic Magnetoresistance (abbreviated as AMR), a Giant Magnetoresistance (abbreviated as GMR), and a Tunnel Magnetoresistance (abbreviated as TMR). The hall sensor may employ an existing hall switch.

In some examples, the base 310 includes a base 311 and a cover 313 detachably connected, the base 311 is provided with a cavity, each rotating member, the supporting member 360 and each magnetic induction element are disposed in the cavity, and the cover 313 is provided with an opening for exposing the rotating member.

The first mark 351, the second mark 352 and the third mark 353 can be numbers, letters or other characters, and can also be patterns according to different use scenes.

In some examples, the rotation recognition apparatus 300 provided herein may be used as a learning tool, for example, to assist students in learning arithmetic, the first marker 351 and the third marker 353 may be numbers, and the second marker 352 may be operators (addition, subtraction, multiplication, division).

The present application further provides a rotary knob comprising any of the above-described rotation recognition devices. The knob may be used to manipulate the electromechanical device. Each rotating member can be used as a control member of the knob, and the output signal of each magnetic induction element can be transmitted to a control system of the electromechanical device, so that the operation of the electromechanical device is controlled.

The present application also provides an amusement apparatus comprising any one of the above-described rotation recognition devices. The identification of the amusement appliance is different from the identification of the learning appliance. In some examples, the first identifier of the amusement device may be a plant pattern (food of an animal), the second identifier may be an animal pattern, and the display module may display a corresponding picture when the plant pattern and the animal pattern are correctly corresponded. In some examples, the amusement device may also be provided on a table top as an implement for playing a table game.

In some examples, the rotation recognition apparatus provided herein may also be applied to a combination switch or an electronic combination lock.

The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (16)

1. A rotary recognition device, comprising:

a base;

a first rotating member rotatable with respect to the base;

a plurality of first markers spaced about the axis of rotation of the first rotating member;

the first magnet is arranged on the first rotating piece and rotates along with the first rotating piece, and the first magnet is used for generating a magnetic field;

a plurality of first magnetic induction elements fixed relative to the base, spaced apart along a path of movement of the first magnet, the first magnet for approaching and triggering the first magnetic induction elements;

the first marks are arranged on the first rotating piece, the spacing angle of the adjacent first marks changes along the anticlockwise direction according to a first preset rule, and the spacing angle of the adjacent first magnetic induction elements changes along the clockwise direction according to the first preset rule; or the first marks are arranged on the base, and the change rule of the interval angle of the adjacent first marks is consistent with the change rule of the interval angle of the adjacent first magnetic induction elements.

2. The rotary recognition apparatus according to claim 1, wherein:

a plurality of the first marks are distributed at equal intervals.

3. The rotary recognition apparatus according to claim 1, wherein:

still include second rotating member, second magnet and a plurality of second magnetic induction element, first sign is located first rotating member, second rotating member can for the base is rotatory, second rotating member is equipped with a plurality of second signs, and is a plurality of the second sign centers on the rotation axis interval ground of second rotating member distributes, arbitrary one the second sign can with arbitrary one first sign is aimed at each other, the second magnet install in second rotating member and follow the second rotating member rotates, the second magnet is used for producing magnetic field, second magnetic induction element for the base is fixed, and is a plurality of second magnetic induction element along the motion route interval ground of second magnet distributes, and, adjacent the interval angle of second sign changes according to the second preset rule along the anticlockwise direction, and adjacent the interval angle of second magnetic induction element changes according to the second preset rule along the clockwise direction And the second magnet is used for approaching and triggering the second magnetic induction element.

4. The rotary recognition apparatus according to claim 3, wherein:

the second rotating piece is annular and is arranged on the radial outer side of the first rotating piece; alternatively, the second rotating member is provided on one side of the first rotating member in the axial direction.

5. The rotary recognition apparatus according to claim 3, wherein:

the plurality of first magnetic induction elements are arranged on one circuit board, and the plurality of second magnetic induction elements are arranged on the other circuit board; or the plurality of first magnetic induction elements and the plurality of second magnetic induction elements are arranged on the same circuit board.

6. The rotary recognition apparatus according to claim 3, wherein:

the display module is arranged in a track ring formed by the first mark due to the rotation motion and used for displaying the content related to the information formed by aligning the first mark and the second mark.

7. The rotary recognition apparatus according to claim 3, wherein:

the base is connected with a first identification and a second identification, the base is connected with a visual auxiliary piece, the visual auxiliary piece is located on one side, close to a user, of the first identification and the second identification, the visual auxiliary piece is provided with a visual window, and the first identification and the second identification which are in an aligned state are located in the visual window.

8. The rotary recognition apparatus according to claim 3, wherein:

the magnetic induction heating device further comprises a third rotating piece, a third magnet and a plurality of third magnetic induction elements, wherein the third rotating piece can rotate relative to the base, the third rotating piece is provided with a plurality of third marks which are distributed at intervals around the rotation axis of the third rotating piece, any one of the third marks can be aligned with any one of the second marks, the third magnet is installed on the third rotating piece and rotates along with the third rotating piece, the third magnet is used for generating a magnetic field, the third magnetic induction elements are fixed relative to the base, the plurality of third magnetic induction elements are distributed at intervals along the movement path of the third magnet, the interval angle of the adjacent third marks is changed according to a third preset rule along the counterclockwise direction, and the interval angle of the adjacent third magnetic induction elements is changed according to the third preset rule along the clockwise direction, the third magnet is used for approaching and triggering the third magnetic induction element.

9. The rotation recognition device according to claim 8, wherein:

the second rotating member is annular and is arranged on the radial outer side of the first rotating member, and the third rotating member is annular and is arranged on the radial outer side of the second rotating member.

10. The rotary recognition apparatus as set forth in claim 9, wherein:

still include support piece, support piece install in the base, first rotating member the second rotating member with the third rotating member accept in one side of support piece, first magnetic induction element the second magnetic induction element with the third magnetic induction element is located the opposite side of support piece, support piece is made by magnetic permeable material.

11. The rotary recognition apparatus as set forth in claim 10, wherein:

the support piece is provided with a first annular convex rib and a second annular convex rib, the first annular convex rib is located between the first rotating piece and the second rotating piece, and the second annular convex rib is located between the second rotating piece and the third rotating piece.

12. The rotary recognition apparatus as set forth in claim 11, wherein:

the support piece is further provided with an inner ring protrusion and an outer ring protrusion, the inner ring protrusion is located on the inner side of the first annular convex rib, the outer ring protrusion is located on the outer side of the second annular convex rib, the inner ring protrusion and the first annular convex rib form a first guide groove for accommodating the first rotating piece, the first annular convex rib and the second annular convex rib form a second guide groove for accommodating the second rotating piece, and the second annular convex rib and the outer ring protrusion form a third guide groove for accommodating the third rotating piece.

13. The rotary recognition apparatus according to claim 8, wherein:

the first magnetic induction element, the second magnetic induction element and the third magnetic induction element comprise any one or more of a magnetic reed switch, a Hall sensor, an anisotropic magnetoresistance, a giant magnetoresistance and a tunneling magnetoresistance.

14. A knob, characterized by:

the knob includes a rotary recognition device according to any one of claims 1 to 13.

15. A learning appliance, characterized by:

the learning appliance comprises a rotary recognition device according to any one of claims 1 to 13.

16. An amusement device, characterized by:

the amusement apparatus comprising a rotary recognition device according to any one of claims 1 to 13.

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