CN114216393A - Rotation angle detection device, knob, learning tool, and entertainment tool - Google Patents
Rotation angle detection device, knob, learning tool, and entertainment tool Download PDFInfo
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- CN114216393A CN114216393A CN202210154333.4A CN202210154333A CN114216393A CN 114216393 A CN114216393 A CN 114216393A CN 202210154333 A CN202210154333 A CN 202210154333A CN 114216393 A CN114216393 A CN 114216393A
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- Prior art keywords
- rotating
- rotation angle
- detection
- magnetic induction
- detecting device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
- A63H33/00—Other toys
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
- G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels
- G05G1/10—Details, e.g. of discs, knobs, wheels or handles
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/181—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for electric and magnetic fields; for voltages; for currents
Abstract
The application provides a rotation angle detection device, knob, learning tools and amusement apparatus, rotation angle detection device includes: a base; the rotating piece is provided with a transmission surface, the transmission surface is positioned at one end of the rotating piece along the axial direction, and the position size of the transmission surface changes along with the rotation of the rotating piece; the magnetic induction subassembly, including detecting the moving member, detecting the magnet, detecting magnetic induction component, the one end that detects the moving member is configured as and keeps in contact with the driving face, detects the magnet and is connected with detecting the moving member and follow and detect the moving member and move, detects magnetic induction component and fixes for the base and be used for detecting the position change that detects the magnet. The rotating member of the rotation angle detection device drives the detection magnet to move in the rotating process, the detection magnetic induction element detects the position change of the detection magnet, the rotation angle of the rotating member can be measured, the magnetic induction mode has the characteristic of non-electric contact, and the use reliability and safety of the rotation angle detection device can be improved.
Description
Technical Field
The application belongs to the technical field of magnetic induction, and more specifically relates to a rotation angle detection device and a knob.
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.
Disclosure of Invention
An object of the embodiment of the present application is to provide a rotation angle detection device, a knob, a learning tool, and an entertainment tool, so as to solve the technical problem that an angle identification device in the prior art is prone to malfunction or safety during operation.
In order to achieve the purpose, the technical scheme adopted by the application is as follows: provided is a rotation angle detection device comprising:
a base;
the rotating part is rotatably arranged on the base and provided with a transmission surface, the transmission surface is positioned at one end of the rotating part along the axial direction, and the axial position size of the transmission surface changes along with the rotation of the rotating part, or the transmission surface is positioned on the periphery of the rotating part, and the radial position size of the transmission surface changes along with the rotation of the rotating part;
the magnetic induction assembly comprises a detection moving member, a detection magnet and a detection magnetic induction element, wherein one end of the detection moving member is configured to be in contact with the transmission surface, the detection magnet is connected with the detection moving member and moves along with the detection moving member, and the detection magnetic induction element is fixed relative to the base and is used for detecting the position change of the detection magnet.
Optionally, the drive surface comprises a helical ramp disposed about the rotational axis of the rotating member.
Optionally, the transmission surface comprises a cam surface disposed about the rotational axis of the rotating member, the distance of the cam surface to the rotational axis of the rotating member varying with rotation of the rotating member.
Optionally, be equipped with a plurality of interval distribution's screens groove on the driving surface, along with the rotation of rotating member, the tip that detects the moving member falls into each in proper order the screens groove.
Optionally, the magnetic induction assembly further includes a detection elastic member, the detection elastic member is connected to the detection moving member, and the detection moving member is pushed by the detection elastic member to keep in contact with the transmission surface.
Optionally, the magnetic induction assembly further comprises two connecting shafts, the detection moving member comprises a main body part, a contact part and a mounting part, the contact part and the mounting part are respectively positioned at two sides of the main body part, the contact part is used for contacting the transmission surface, the detection magnet is arranged on the mounting part, the main body part is provided with two through holes which are respectively positioned on two sides of the mounting part, the connecting shaft is movably arranged in the through hole in a penetrating way, the outer diameter of one end of the connecting shaft, which is close to the transmission surface, is larger than the diameter of the through hole, one end of the connecting shaft, which is far away from the transmission surface, is fixedly connected with the base, the detection elastic pieces are arranged in one-to-one correspondence with the connecting shaft, the detection elastic piece is sleeved on the connecting shaft and located between the main body portion and the base, and the detection magnetic induction element is located on one side, away from the transmission surface, of the detection magnet.
Optionally, the device further comprises an interval judging assembly, the rotating member is provided with a plurality of interval reference surfaces which are connected end to end, the plurality of interval reference surfaces are arranged around a rotating axis of the rotating member, the axial position size or the radial position size of different interval reference surfaces is different, and the interval judging assembly is used for identifying the position of the interval reference surface; the transmission surface comprises a plurality of transmission intervals which are connected end to end, the change trend of the axial position size or the radial position size of two adjacent transmission intervals is opposite along the preset rotation direction, and the number of the interval reference surfaces is the same as that of the transmission intervals.
Optionally, the interval judgment assembly includes a reference moving part, a reference magnet, and a reference magnetic induction element, one end of the reference moving part is configured to be in contact with the interval reference surface, the reference magnet is connected with the reference moving part and moves along with the reference moving part, and the reference magnetic induction element is fixed relative to the base and is used for detecting a position change of the reference magnet.
Optionally, the interval judgment assembly further includes a reference elastic member, the reference elastic member is connected to the reference moving member, and the reference moving member is pushed by the reference elastic member to keep in contact with the interval reference surface.
Optionally, the interval reference surface is arranged on the periphery of the rotating member, and the radial positions of different interval reference surfaces are different in size; the interval judging assembly further comprises a mounting seat and two inserting shafts, the mounting seat is fixedly connected with the base, the reference moving element comprises a body part, an abutting part and an assembling part, the abutting part is used for contacting the interval reference surface, the reference magnet is installed on the assembling part, the body part is provided with two through holes, the axis of each through hole is arranged along the radial direction of the rotating element, the two through holes are respectively positioned on two sides of the assembling part, the inserting shafts are movably arranged in the through holes in a penetrating manner, one end of each inserting shaft is fixedly connected with the mounting seat, the other end of each inserting shaft is a large end, the outer diameter of each large end is larger than the diameter of each through hole, the reference elastic elements and the inserting shafts are arranged in a one-to-one correspondence manner, and the reference elastic elements are sleeved on the inserting shafts; the reference elastic element is positioned between the large end and the body part, or the reference elastic element is positioned between the body part and the mounting seat; the reference magnetic induction element is located on one side of the reference magnet in the axial direction of the rotary member.
Optionally, the rotating member includes a rotating disk portion, a transmission portion and a reference portion, the transmission portion and the reference portion are located on the same side of the rotating disk portion and are both disposed around a rotation axis of the rotating member, the transmission portion is provided with the transmission surface, and the reference portion is provided with the interval reference surface.
Optionally, one end of the transmission part in the axial direction is provided with a spiral inclined surface, the spiral inclined surface serves as the transmission surface, and the reference part is located on the radial outer side of the transmission part; the interval reference surface is arranged on the outer peripheral surface of the reference part, or the interval reference surface is arranged at one end of the reference part along the axial direction.
Optionally, the rotation angle detection device includes a plurality of the rotating member, and is a plurality of the rotating member is radially established by interior to exterior cover in proper order, and at least one the rotating member is equipped with the magnetic induction subassembly.
Optionally, the outer end face of the rotating member is provided with a plurality of marks, the marks are arranged around the rotating axis of the rotating member, and the marks of two adjacent rotating members can be aligned with each other.
Optionally, the display module is disposed inside a track circle formed by the marks of the innermost rotating member due to the rotating motion, and the display module is configured to display content related to information formed by aligning the marks of the plurality of rotating members with each other.
Optionally, the base further comprises a viewing aid fixedly arranged relative to the base, the viewing aid is located axially outside the rotating member, the viewing aid is provided with a viewing window, and the mark in the aligned state is located in the viewing window.
Optionally, the base is equipped with and holds the chamber, it has the opening to hold the chamber, the magnetic induction subassembly is located hold the intracavity, the rotating member is located hold the opening in chamber.
Optionally, a plurality of annular supporting structures are arranged in the accommodating cavity, and the rotating member is rotatably supported on the annular supporting structures.
Optionally, the annular support structure includes a support seat and an annular rib, the rotary member is provided with an annular sleeve disposed around a rotation axis of the rotary member, the annular sleeve is axially supported by the support seat, and the annular sleeve is radially positioned on the annular rib.
The present application also provides a knob, a learning appliance and an amusement appliance, the knob, the learning appliance and the amusement appliance respectively include any one of the above-mentioned rotation angle detection devices.
The application provides a rotation angle detection device's beneficial effect lies in: compared with the prior art, the rotation angle detection device comprises a base, a rotating part and a magnetic induction assembly, wherein the rotating part drives and detects the moving part and the detection magnet to move in the rotating process, the detection magnetic induction element detects the position change of the detection magnet, so that the rotation angle of the rotating part can be measured and calculated, the magnetic induction mode has the characteristic of non-electric contact, and the use reliability and the safety of the rotation angle detection device can be improved.
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 angle detecting device according to a first embodiment of the present application;
fig. 2 is a schematic diagram of a rotation angle detecting device according to a second embodiment of the present application;
fig. 3 is a schematic diagram of a rotation angle detecting device according to a third embodiment of the present application;
fig. 4 is a schematic view of a rotation angle detecting device according to a fourth embodiment of the present application;
fig. 5 is a schematic view of a rotation angle detecting device according to a fifth embodiment of the present application;
fig. 6 is a plan view of a rotation angle detecting device according to a sixth embodiment of the present application;
fig. 7 is an exploded view of a rotation angle detecting device according to a sixth embodiment of the present application;
fig. 8 is a sectional view of a rotation angle detecting device provided in a sixth embodiment of the present application;
FIG. 9 is a bottom view of a rotating member provided in a sixth embodiment of the present application;
FIG. 10 is a cross-sectional view of a rotating member provided in a sixth embodiment of the present application;
fig. 11 is a schematic structural diagram of a magnetic induction assembly according to a sixth embodiment of the present application;
fig. 12 is a schematic structural diagram of an interval determination module according to a sixth embodiment of the present application.
Wherein, in the figures, the respective reference numerals:
100-rotation angle detection means, 110-base, 120-rotary member, 121-drive face, 130-magnetic induction component, 131-detection moving member, 132-detection magnet, 133-detection magnetic induction element,
220-the rotary member, 221-the driving surface,
320-rotating element, 321-driving surface,
400-rotation angle detection device, 420-rotation element, 421-transmission surface, 422-interval reference surface, 440-interval judgment component, 441-reference moving element, 442-reference magnet, 443-reference magnetic induction element,
521-the transmission range, 522-the range reference plane,
600-rotation angle detection device, 610-base, 611-base, 612-central mounting piece, 613-cover body, 614-annular support structure, 6141-support base, 6142-annular convex rib, 620-rotating piece, 621-turntable part, 622-transmission part, 6221-transmission surface, 6222-clamping groove, 623-reference part, 6231-interval reference surface, 624-annular sleeve, 620 a-first rotating piece, 620 b-second rotating piece, 620 c-third rotating piece, 630-magnetic induction component, 631-detection moving piece, 6311-main body part, 6312-contact part, 6313-mounting part, 632-detection magnet, 633-detection magnetic induction element, 634-detection elastic piece, 635-connecting shaft, 640-interval judgment component, 641-reference moving part, 6411-body part, 6412-abutment part, 6413-assembly part, 642-reference magnet, 643-reference magnetic induction element, 644-reference elastic part, 645-insertion shaft, 646-mounting seat, 651-first mark, 652-second mark, 653-third mark, 672-display module, 680-viewing aid, 681-viewing window.
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, 2, 3, 4, 5 and 6 respectively show different embodiments of the rotation angle detection apparatus provided by the present application.
The first embodiment is as follows:
referring to fig. 1, a rotation angle detecting device 100 according to an embodiment of the present application will now be described. The rotation angle detection device 100 includes: base 110, rotary member 120, and magnetic induction assembly 130.
The rotating member 120 is rotatably mounted on the base 110, the rotating member 120 is provided with a transmission surface 121, the transmission surface 121 is located at one end of the rotating member 120 along the axial direction, and the axial position size of the transmission surface 121 changes along with the rotation of the rotating member 120; the magnetic induction assembly 130 comprises a detection moving member 131, a detection magnet 132 and a detection magnetic induction element 133, wherein one end of the detection moving member 131 is configured to be in contact with the transmission surface 121, the detection magnet 132 is connected with the detection moving member 131 and moves along with the detection moving member 131, and the detection magnetic induction element 133 is fixed relative to the base 110 and is used for detecting the position change of the detection magnet 132.
The rotation angle detection device 100 provided by the present application has the following beneficial effects: compared with the prior art, the rotation angle detection device 100 of the present application includes the base 110, the rotating member 120 and the magnetic induction assembly 130, the rotating member 120 drives the detection moving member 131 and the detection magnet 132 to move during the rotation process, the detection magnetic induction element 133 detects the position change of the detection magnet 132, so that the rotation angle of the rotating member 120 can be measured and calculated, the magnetic induction mode has the characteristic of non-electrical contact, and the use reliability and safety of the rotation angle detection device 100 can be improved.
The base 110 may be composed of a plurality of parts, and serves as a mounting base for the parts of the rotation angle detecting device 100.
The rotary member 120 is rotatable with respect to the base 110. The rotating member 120 is provided with a transmission surface 121, and the transmission surface 121 is matched with the moving member of the magnetic induction assembly 130, so that the rotating motion of the rotating member 120 can be converted into the moving member and the movement of the detection magnet 132.
The magnetic induction assembly 130 includes a detection moving member 131, a detection magnet 132, and a detection magnetic induction element 133. One end of the detection moving member 131 is configured to be kept in contact with the transmission surface 121. The force forcing the detecting moving member 131 to contact the transmission surface 121 may be an elastic force, a pressure generated by air pressure, a magnetic force, or a gravity.
The rotation angle detection device 100 detects the position size change of the transmission surface 121 by adopting a magnetic induction mode, the magnetic induction is not influenced by dust, dirt and ambient light, the reliability is high, and the device is particularly suitable for use scenes with severe working environments.
The sensing magnet 132 is connected to the sensing moving member 131 and moves following the sensing moving member 131. The detection magnet 132 may be installed at an end of the detection moving member 131 far from the driving surface 121. The detection magnet 132 may be a permanent magnet, such as a magnet.
The detection magnetic induction element 133 is fixed with respect to the base 110 and serves to detect a change in the position of the detection magnet 132. The detection magnetic induction element 133 can detect a change in the intensity or direction of the magnetic field generated by the detection magnet 132. In some examples, the detection magnetic induction element 133 is triggered when the detection magnet 132 is in proximity to the detection magnetic induction element 133. The detection magnetic induction element 133 may 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 can adopt the existing linear Hall which can detect the linear displacement.
Referring to fig. 1, in some examples, the driving surface 121 of the rotating member 120 may be located at one end of the rotating member 120 in the axial direction and the axial position size of the driving surface 121 varies with the rotation of the rotating member 120. The axial height of the transmission surface 121 changes along with the rotation of the rotating member 120, and the moving direction of the detection moving member 131 is arranged along the axial direction of the rotating member 120, so that the transmission surface 121 can drive the detection moving member 131 to move up and down in the rotating process. Alternatively, the driving surface 121 may comprise a helical ramp disposed about the rotational axis of the rotating member 120.
Example two:
referring to fig. 2, in other examples, drive surface 221 of rotating member 220 may be located at the outer periphery of rotating member 220 and the radial position dimension of drive surface 221 varies with the rotation of rotating member 220. The radius of the transmission surface 221 changes with the rotation of the rotating member 220, and the moving direction of the detection moving member 131 is arranged along the radial direction of the rotating member 220, so that the transmission surface 221 can drive the detection moving member 131 to move left and right in the rotating process. Specifically, the rotating member 220 may be embodied as a cam, and the driving surface 221 includes a cam surface disposed around the rotational axis of the rotating member 220, and the distance from the cam surface to the rotational axis of the rotating member 220 varies with the rotation of the rotating member 220. As shown in fig. 2, the rotation axis of the rotating member 220 is point O, the driving surface 221 sequentially has points a, B, C, D and E in a counterclockwise direction, and the radius of the driving surface 221 gradually increases, so that the rotating member 220 can drive the detecting moving member 131 to move during the rotation process.
Example three:
referring to fig. 3, further, the rotating member 320 may be in the form of an eccentric wheel with a rotation axis at point O. The driving surface 321 of the rotating member 320 has an H point, an I point, a J point and a K point in sequence along the counterclockwise direction, the radius of the J point is greater than that of the I point, and the radius of the K point may be equal to that of the J point. In the rotation process of the rotating member 320, the detection magnetic induction element 133 detects the change of the radial dimension of the rotating member 320, and for the J point and the K point, the radii of the J point and the K point are equal, and the control system can judge whether the J point or the K point is in contact with the detection moving member 131 according to the change rule of the radial dimension.
With the solutions shown in fig. 1 and 2, the range of variation of the axial position dimension or the radial position dimension of the transmission surface 121 is large, and in some cases, the peak value of the stress of the rotating member 120 and the detecting moving member 131 is large, the parts are easily worn, or the driving of the rotating member 120 is difficult, and it is necessary to reduce the range of variation of the position dimension of the transmission surface 121 in one rotation cycle. The solution shown in fig. 3 solves this technical problem. The driving surface 321 of the rotating member 320 shown in fig. 3 may be divided into two parts: an upper half turn and a lower half turn. In one rotation period, the radial dimension of the driving surface 321 may be changed from small to large and then from large to small, thereby reducing the size change range of the driving surface 321 in one rotation period.
Example four:
referring to fig. 4, in some examples, rotation angle detection apparatus 400 includes base 110, rotating member 420, magnetic induction assembly 130, and interval determination assembly 440. The rotating piece 420 is provided with a plurality of section reference surfaces 422 which are connected end to end, the section reference surfaces 422 are arranged around the rotating axis of the rotating piece 420, the axial position sizes of different section reference surfaces 422 are different, and the section judging component 440 is used for identifying the position of the section reference surfaces 422; the transmission surface 421 includes a plurality of transmission sections connected end to end, and along the predetermined rotation direction, the variation trends of the axial position sizes of two adjacent transmission sections are opposite, and the number of the section reference surfaces 422 is the same as that of the transmission sections. During the rotation of the rotating member 420, the magnetic induction component 130 detects the size change of the axial position of the transmission surface 421, and because the transmission surface 421 is divided into a plurality of parts including a plurality of transmission sections connected end to end, such as the transmission section 421 (a) on the left side and the transmission section 421 (B) on the right side, and there are a plurality of points with the same size of the axial position, such as a point P and a point Q, on the transmission surface 421, it is necessary to take measures to make the control system recognize whether the moving member 131 contacts the point P or the point Q.
The rotating member 420 is provided with a plurality of end-to-end interval reference surfaces 422, the number of the interval reference surfaces 422 is the same as that of the transmission intervals, and the interval reference surfaces 422 and the transmission intervals can be in one-to-one correspondence. The axial position sizes of different interval reference surfaces 422 are different, the interval judging component 440 identifies the position of the interval reference surface 422, and the control system can judge which transmission interval the moving member 131 is in contact with according to the feedback of the interval judging component 440, namely, the P point or the Q point of the moving member 131 is in contact with is identified and detected. Thus, even if the power is off and restarted, the control system can detect whether the moving member 131 contacts the point P or the point Q.
Referring to fig. 4, in some examples, the left interval reference surface 422 (a) and the right interval reference surface 422 (B) have different axial position dimensions, and the interval determination assembly 440 is disposed axially; the transmission section 421 (a) on the left side and the transmission section 421 (B) on the right side have opposite trends of change in the axial position dimension.
Example five:
referring to fig. 5, in other examples, the radial position dimensions of the left interval reference surface 522 (a) and the right interval reference surface 522 (B) are different, and the interval judgment component 440 is disposed in the radial direction; the axial position dimensions of the left-hand gear section 521 (a) and the right-hand gear section 521 (B) have opposite tendencies of change.
The interval judgment component detects the position of the interval reference surface, and the adopted technical scheme can comprise a laser distance sensor, a magnetic sensor or a travel switch. The interval determination module may also adopt the same technical solution as the magnetic induction module 130.
Specifically, the interval determination assembly 440 includes a reference moving part 441, a reference magnet 442, and a reference magnetic induction element 443, wherein one end of the reference moving part 441 is configured to be in contact with the interval reference surface 422, the reference magnet 442 is connected with the reference moving part 441 and moves along with the reference moving part 441, and the reference magnetic induction element 443 is fixed relative to the base 110 and is used for detecting a position change of the reference magnet 442. The rotating member 420 drives the reference moving member 441 and the reference magnet 442 to move during the rotation, and the reference magnetic induction element 443 detects the position change of the reference magnet 442, so that the position of the interval reference surface 422 can be recognized. The control system can calculate the rotation angle of the rotating member 420 according to the feedback of the detecting magnetic induction element 133 and the reference magnetic induction element 443.
Example six:
referring to fig. 6 to 8, a rotation angle detecting device 600 according to an embodiment of the present application will now be described. The rotation angle detection device 600 includes: the base 610, the rotating member 620, the magnetic induction member 630, the interval determination member 640, the display module 672 and the viewing aid 680. The operation principle of the rotation angle detecting device 600 can refer to the operation principle of the solution shown in fig. 5.
The rotation angle detecting device 600 may include a plurality of rotating members 620, the plurality of rotating members 620 are sequentially sleeved from inside to outside along a radial direction, and at least one rotating member 620 is provided with a magnetic induction assembly 630. The working principle of the magnetic induction component 630 can refer to the working principle of the technical solution shown in fig. 1. Based on the characteristics of this magnetic induction detection scheme, each rotating member 620 can have a more simplified mounting structure, and its support and location can be mutually independent, and in practice, this kind of mode has very big advantage, for example, the rotation of each rotating member 620 can be mutually independent, and each rotating member 620 can not unexpected drive adjacent rotating member 620 and rotate at the rotation in-process, avoids the maloperation. Specific mounting arrangements for the rotating member 620 can be found in the description of the annular support structure 614 herein.
The outer end surface of the rotating member 620 is provided with a plurality of marks disposed around the rotational axis of the rotating member 620, and the marks of two adjacent rotating members 620 may be aligned with each other. Specifically, the plurality of rotating members 620 sequentially include a first rotating member 620a, a second rotating member 620b and a third rotating member 620c from inside to outside along the radial direction, the first rotating member 620a is provided with a first mark 651, the second rotating member 620b is provided with a second mark 652, and the third rotating member 620c is provided with a third mark 653. All of the rotating members 620 may be provided with magnetic induction units 630. By rotating each rotating member 620, the control system can measure and calculate the rotation angle of each rotating member 620 according to the feedback of each magnetic induction assembly 630, thereby determining the alignment status of the first mark 651, the second mark 652 and the third mark 653.
The respective marks may be numbers, letters or other characters, or patterns according to different usage scenarios.
The rotating member 620 may include a turntable portion 621, a transmission portion 622, and a reference portion 623, the transmission portion 622 and the reference portion 623 being located on the same side of the turntable portion 621 and both disposed around the rotation axis of the rotating member 620, the transmission portion 622 being provided with a transmission surface 6221, and the reference portion 623 being provided with an interval reference surface 6231. The detection moving member 631 of the magnetic induction unit 630 contacts the transmission surface 6221 of the transmission unit 622, and the reference moving member 641 of the section determination unit 640 contacts the section reference surface 6231 of the reference unit 623.
Fig. 9 and 10 show the structure of one of the rotating members 620. The first rotating member 620a, the second rotating member 620b, and the third rotating member 620c may each have the structure shown in fig. 9 and 10.
Referring to fig. 9 and 10, one end of the transmission portion 622 in the axial direction is provided with a spiral inclined surface as a transmission surface 6221, and the reference portion 623 is located radially outside the transmission portion 622. During the rotation of the rotary member 620, the spiral slope may drive the detection moving member 631 to move in the axial direction. In some examples, referring to fig. 9 and 10, a section reference surface 6231 may be provided on the outer circumferential surface of the reference portion 623, the radius of the section reference surface 6231 (a) on the left side being smaller than the radius of the section reference surface 6231 (B) on the right side. In other examples, referring to fig. 4, the interval reference surface may be provided at one end of the reference portion in the axial direction.
In some application scenarios, the rotation angles of the rotating element 620 having use value are distributed discretely, and the rotating element 620 may be provided with a plurality of positions, each of which is provided with an identifier.
Preferably, the transmission surface 6221 is provided with a plurality of detent grooves 6222 spaced apart from each other, and the end of the detection moving member 631 sequentially falls into each detent groove 6222 as the rotating member 620 rotates. The end of the moving member 631 falling into the locking groove 6222 can be detected, so that the stability of the rotating member 620 maintaining the locking position can be improved, and the hand feeling of the user rotating the rotating member 620 can be improved. The shape of the locking groove 6222 is not limited, and may be, for example, spherical or square. The detent grooves 6222 may correspond to detents or marks one to one.
Referring to fig. 7 and 8, the base 610 is provided with a receiving cavity having an opening, the magnetic induction assembly 630 is located in the receiving cavity, and the rotating member 620 is located at the opening of the receiving cavity. Specifically, the base 610 includes a base 611 and a cover 613, the base 611 and the cover 613 enclose a receiving cavity, and the cover 613 is provided with an opening for exposing the rotating member 620.
Preferably, a plurality of annular support structures 614 are disposed within the receiving cavity, and the rotating member 620 is rotatably supported on the annular support structures 614. Each rotating member 620 can rotate independently, a gap can be formed between every two adjacent rotating members 620, and each rotating member 620 cannot accidentally drive the adjacent rotating members 620 to rotate in the rotating process, so that misoperation is avoided. For example, when the second rotating member 620b is rotated, the first rotating member 620a and the third rotating member 620c are not accidentally carried by the second rotating member 620 b.
In particular, the annular support structure 614 comprises a support seat 6141 and an annular rib 6142, the rotary member 620 is provided with an annular sleeve 624 arranged around the rotation axis of the rotary member 620, the annular sleeve 624 is axially supported on the support seat 6141, and the annular sleeve 624 is radially positioned on the annular rib 6142. The annular sleeve 624 is axially supported by a support seat 6141, and the support seat 6141 may be formed by a plurality of independent protrusions. The engagement of the annular sleeve 624 with the annular rib 6142 can be a shaft hole engagement, for example, the outer side of the annular sleeve 624 engages the inner side of the annular rib 6142 (as shown in fig. 8), or the inner side of the annular sleeve engages the outer side of the annular rib.
Referring to fig. 6, a display module 672 is provided inside a track circle formed by the rotation of the identifier of the innermost rotating member 620, and the display module 672 is used for displaying the content related to the information formed by the mutual alignment of the identifiers of the plurality of rotating members 620. In some examples, the first rotating member 620a may have a ring shape, the first mark 651 is disposed on the ring, and the display module 672 is disposed in the ring. In other examples, the first rotating member 620a may be solid, and the display module 672 is disposed on the first rotating member 620a and located inside the track circle formed by the first mark 651 due to the rotating motion. The display module 672 is used for displaying the content related to the information formed by aligning the respective identifiers. In some examples, for the case where the number of the rotating members 620 is two, the first flag 651 may be an index (number), the second flag 652 may be a base number (number), and the display module 672 may display a formula of an index operation and an operation result thereof. The rotation angle detecting apparatus 600 may further be provided with a speaker for audibly presenting contents related to information formed by aligning the first marker 651 and the second marker 652, for example, a result of the exponential operation. The display module 672 may be a display screen.
The first rotating member 620a has a ring shape, the center mounting member 612 is disposed inside the first rotating member 620a, the center mounting member 612 is fixedly disposed with respect to the base 610, and the display module 672 is mounted to the center mounting member 612.
Referring to fig. 6, the viewing aid 680 is fixedly disposed with respect to the base 610, the viewing aid 680 is located axially outward of the rotary 620, the viewing aid 680 is provided with a viewing window 681, and the mark in an aligned state is located within the viewing window 681. The viewing aid 680 may assist or prompt the user to view the indicia in an aligned state. During use, a user rotates each rotating member 620 according to requirements, so that the target mark is positioned in the observation window, the control system can identify the mark positioned in the observation window by detecting the rotating angle of each rotating member 620, and the display module 672 can display the content related to the information formed by aligning the mark. The viewing aid 680 may be fixedly coupled to the central mounting member 612.
Referring to fig. 11, the magnetic induction assembly 630 includes a detecting moving member 631, a detecting magnet 632, a detecting magnetic induction element 633, and a detecting elastic member 634. The detecting elastic member 634 is connected to the detecting moving member 631, and the detecting moving member 631 is pushed by the detecting elastic member 634 to be kept in contact with the transmission surface 6221. The detection elastic member 634 may be a spring.
Further, the magnetic induction assembly 630 further includes two connecting shafts 635, the detection moving member 631 includes a main body portion 6311, a contact portion 6312 and an installation portion 6313, the contact portion 6312 and the installation portion 6313 are respectively located on two sides of the main body portion 6311, the contact portion 6312 is used for contacting the transmission surface 6221, the detection magnet 632 is installed on the installation portion 6313, the main body portion 6311 is provided with two through holes, the two through holes are respectively located on two sides of the installation portion 6313, the connecting shaft 635 is movably disposed through the through holes, an outer diameter of one end, close to the transmission surface 6221, of the connecting shaft 635 is larger than a diameter of the through holes, one end, far away from the transmission surface 6221, of the connecting shaft 635 is fixedly connected with the base 610, the detection elastic pieces 634 are disposed in one-to-one correspondence with the connecting shaft 635, the detection elastic pieces 634 are sleeved on the connecting shaft 635 and located between the main body portion 6311 and the base 610, and the detection magnetic induction element 633 is located on one side, far away from the transmission surface 6221, of the detection magnet 632. The two connecting shafts 635 are respectively located at two sides of the mounting portion 6313, so that the detecting magnetic induction element 633 can be located between the two connecting shafts 635 and is disposed opposite to the detecting magnet 632, thereby improving the spatial structure of the magnetic induction assembly 630 and facilitating improvement of the detection accuracy of magnetic induction. The connecting shaft 635 may be in the form of a bolt.
Referring to fig. 12, the interval judgment assembly 640 includes a reference moving member 641, a reference magnet 642, a reference magnetic induction element 643, and a reference elastic member 644. The reference elastic member 644 is connected to the reference moving member 641, and the reference moving member 641 keeps contact with the interval reference surface 6231 under the pushing of the reference elastic member 644. The reference elastic member 644 may be a spring.
Further, the interval reference surface 6231 is provided at the outer circumference of the rotating member 620, and the radial position sizes of different interval reference surfaces 6231 are different; the interval determination assembly 640 further includes an installation seat 646 and two insertion shafts 645, the installation seat 646 is fixedly connected with the base 610, the reference moving member 641 includes a body portion 6411, an abutting portion 6412 and an assembling portion 6413, the abutting portion 6412 is used for contacting the interval reference surface 6231, the reference magnet 642 is installed in the assembling portion 6413, the body portion 6411 is provided with two through holes, axes of the through holes are arranged along a radial direction of the rotating member 620, the two through holes are respectively located at two sides of the assembling portion 6413, the insertion shafts 645 are movably inserted through the through holes, one end of the insertion shafts 645 is fixedly connected with the installation seat 646, the other end of the insertion shafts 645 is a large end, an outer diameter of the large end is larger than a diameter of the through holes, the reference elastic members 644 are arranged in one-to-one correspondence with the insertion shafts 645, and the reference elastic members 644 are sleeved on the insertion shafts 645; a reference elastic member 644 is located between the large end and the body portion 6411, or the reference elastic member 644 is located between the body portion 6411 and the mount 646; the reference magnetic induction element 643 is located on one side of the reference magnet 642 in the axial direction of the rotary member 620. The two insertion shafts 645 are respectively located at two sides of the assembling portion 6413, so that the reference magnetic induction element 643 can be located between the two insertion shafts 645 and disposed opposite to the reference magnet 642, thereby improving the spatial structure of the interval determination unit 640 and facilitating to improve the detection accuracy of magnetic induction. The insertion shaft 645 may be embodied as a bolt. In some examples, as shown in fig. 12, the reference elastic member 644 may be located between the large end and the body portion 6411, and the reference elastic member 644 pushes the reference moving member 641 to a position close to the mounting seat 646. In other examples, the reference elastic member 644 may be located between the body portion 6411 and the mounting seat 646, and the reference elastic member 644 pushes the reference moving member 641 to a position away from the mounting seat 646. In some cases, the interval determination component 640 may also have the same structure as the magnetic induction component 630.
The first, second and third identifiers 651, 652 and 653 may be numbers, letters, or other characters, or patterns according to different usage scenarios.
In some examples, the rotation angle detection apparatus 600 provided herein may be used as a learning tool, for example, to assist students in learning arithmetic, the first and third identifiers 651 and 653 may be numbers, and the second identifier 652 may be operators (addition, subtraction, multiplication, and division).
The present application also provides a rotary knob including any one of the above rotation angle detecting 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 angle detection 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 angle detection apparatus provided herein may also be applied to a combination switch or an electronic combination lock.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (22)
1. A rotation angle detecting device, comprising:
a base;
the rotating part is rotatably arranged on the base and provided with a transmission surface, the transmission surface is positioned at one end of the rotating part along the axial direction, and the axial position size of the transmission surface changes along with the rotation of the rotating part, or the transmission surface is positioned on the periphery of the rotating part, and the radial position size of the transmission surface changes along with the rotation of the rotating part;
the magnetic induction assembly comprises a detection moving member, a detection magnet and a detection magnetic induction element, wherein one end of the detection moving member is configured to be in contact with the transmission surface, the detection magnet is connected with the detection moving member and moves along with the detection moving member, and the detection magnetic induction element is fixed relative to the base and is used for detecting the position change of the detection magnet.
2. The rotation angle detecting device according to claim 1, characterized in that:
the driving surface includes a helical ramp disposed about the rotational axis of the rotating member.
3. The rotation angle detecting device according to claim 1, characterized in that:
the transmission surface includes a cam surface disposed about a rotational axis of the rotary member, and a distance from the cam surface to the rotational axis of the rotary member varies with rotation of the rotary member.
4. The rotation angle detecting device according to claim 1, characterized in that:
the transmission surface is provided with a plurality of clamping grooves distributed at intervals, and along with the rotation of the rotating part, the end part of the detection moving part sequentially falls into each clamping groove.
5. The rotation angle detecting device according to claim 1, characterized in that:
the magnetic induction subassembly still including detecting the elastic component, detect the elastic component with it is connected to detect the moving member, it is in to detect the moving member detect under the promotion of elastic component with the driving surface keeps contacting.
6. The rotation angle detecting device according to claim 5, characterized in that:
the magnetic induction assembly also comprises two connecting shafts, the detection moving piece comprises a main body part, a contact part and an installation part, the contact part and the mounting part are respectively positioned at two sides of the main body part, the contact part is used for contacting the transmission surface, the detection magnet is arranged on the mounting part, the main body part is provided with two through holes which are respectively positioned on two sides of the mounting part, the connecting shaft is movably arranged in the through hole in a penetrating way, the outer diameter of one end of the connecting shaft, which is close to the transmission surface, is larger than the diameter of the through hole, one end of the connecting shaft, which is far away from the transmission surface, is fixedly connected with the base, the detection elastic pieces are arranged in one-to-one correspondence with the connecting shaft, the detection elastic piece is sleeved on the connecting shaft and located between the main body portion and the base, and the detection magnetic induction element is located on one side, away from the transmission surface, of the detection magnet.
7. The rotation angle detecting device according to claim 1, characterized in that:
the rotating part is provided with a plurality of section reference surfaces which are connected end to end, the section reference surfaces are arranged around the rotating axis of the rotating part, the axial position sizes or the radial position sizes of different section reference surfaces are different, and the section judging component is used for identifying the positions of the section reference surfaces; the transmission surface comprises a plurality of transmission intervals which are connected end to end, the change trend of the axial position size or the radial position size of two adjacent transmission intervals is opposite along the preset rotation direction, and the number of the interval reference surfaces is the same as that of the transmission intervals.
8. The rotation angle detecting device according to claim 7, wherein:
the interval judgment assembly comprises a reference moving part, a reference magnet and a reference magnetic induction element, wherein one end of the reference moving part is configured to be in contact with the interval reference surface, the reference magnet is connected with the reference moving part and moves along with the reference moving part, and the reference magnetic induction element is fixed relative to the base and is used for detecting the position change of the reference magnet.
9. The rotation angle detecting device according to claim 8, wherein:
the interval judgment assembly further comprises a reference elastic piece, the reference elastic piece is connected with the reference moving piece, and the reference moving piece is pushed by the reference elastic piece to keep contact with the interval reference surface.
10. The rotation angle detecting device according to claim 9, characterized in that:
the interval reference surface is arranged on the periphery of the rotating piece, and the radial positions of different interval reference surfaces are different in size; the interval judging assembly further comprises a mounting seat and two inserting shafts, the mounting seat is fixedly connected with the base, the reference moving element comprises a body part, an abutting part and an assembling part, the abutting part is used for contacting the interval reference surface, the reference magnet is installed on the assembling part, the body part is provided with two through holes, the axis of each through hole is arranged along the radial direction of the rotating element, the two through holes are respectively positioned on two sides of the assembling part, the inserting shafts are movably arranged in the through holes in a penetrating manner, one end of each inserting shaft is fixedly connected with the mounting seat, the other end of each inserting shaft is a large end, the outer diameter of each large end is larger than the diameter of each through hole, the reference elastic elements and the inserting shafts are arranged in a one-to-one correspondence manner, and the reference elastic elements are sleeved on the inserting shafts; the reference elastic element is positioned between the large end and the body part, or the reference elastic element is positioned between the body part and the mounting seat; the reference magnetic induction element is located on one side of the reference magnet in the axial direction of the rotary member.
11. The rotation angle detecting device according to claim 7, wherein:
the rotating part comprises a rotating disc part, a transmission part and a reference part, the transmission part and the reference part are positioned on the same side of the rotating disc part and are arranged around the rotating axis of the rotating part, the transmission part is provided with the transmission surface, and the reference part is provided with the interval reference surface.
12. The rotation angle detecting device according to claim 11, characterized in that:
one end of the transmission part along the axial direction is provided with a spiral inclined surface which is used as the transmission surface, and the reference part is positioned on the radial outer side of the transmission part; the interval reference surface is arranged on the outer peripheral surface of the reference part, or the interval reference surface is arranged at one end of the reference part along the axial direction.
13. The rotation angle detecting device according to any one of claims 1 to 12, characterized in that:
the rotation angle detection device comprises a plurality of rotating parts, a plurality of rotating parts are sequentially sleeved from inside to outside along the radial direction, and at least one rotating part is provided with the magnetic induction assembly.
14. The rotation angle detecting device according to claim 13, wherein:
the outer end face of the rotating piece is provided with a plurality of marks which are arranged around the rotating axis of the rotating piece, and the marks of two adjacent rotating pieces can be mutually aligned.
15. The rotation angle detecting device according to claim 14, wherein:
the display module is arranged in a track ring formed by the marks of the innermost rotating piece due to the rotating motion and is used for displaying content related to information formed by mutually aligning the marks of the rotating pieces.
16. The rotation angle detecting device according to claim 14, wherein:
the base is fixedly provided with an inspection auxiliary piece, the inspection auxiliary piece is positioned on the axial outer side of the rotating piece, the inspection auxiliary piece is provided with an inspection window, and the mark in the aligned state is positioned in the inspection window.
17. The rotation angle detecting device according to claim 13, wherein:
the base is equipped with and holds the chamber, it has the opening to hold the chamber, the magnetic induction subassembly is located hold the intracavity, the rotating member is located hold the opening in chamber.
18. The rotation angle detecting device according to claim 17, wherein:
the accommodating cavity is internally provided with a plurality of annular supporting structures, and the rotating piece is rotatably supported on the annular supporting structures.
19. The rotation angle detecting device according to claim 18, wherein:
the annular supporting structure comprises a supporting seat and an annular convex rib, the rotating part is provided with an annular sleeve surrounding the rotating axis of the rotating part, the annular sleeve is axially supported on the supporting seat, and the annular sleeve is radially positioned on the annular convex rib.
20. A knob, characterized by:
the knob includes the rotation angle detecting device according to any one of claims 1 to 19.
21. A learning appliance, characterized by:
the learning appliance includes the rotation angle detecting device according to any one of claims 1 to 19.
22. An amusement device, characterized by:
the amusement apparatus comprising the rotation angle detecting device according to any one of claims 1 to 19.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210154333.4A CN114216393B (en) | 2022-02-21 | 2022-02-21 | Rotation angle detection device, knob, learning tool, and entertainment tool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210154333.4A CN114216393B (en) | 2022-02-21 | 2022-02-21 | Rotation angle detection device, knob, learning tool, and entertainment tool |
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| CN114216393A true CN114216393A (en) | 2022-03-22 |
| CN114216393B CN114216393B (en) | 2022-05-17 |
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| CN114216393B (en) | 2022-05-17 |
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