Magnetic scale and magnetic scale ruler system

Abstract

The application provides a magnetic scale and a magnetic grating system. The magnetic scale comprises a magnetic group, the magnetic group is a sawtooth structure; the magnetic group comprises an even number of magnetic monomers connected head to tail; the magnetic pole directions of any two adjacent magnetic monomers are opposite; in response to the magnetic scale switching to a first state, the magnetic group is curled along the circumference to form a periodic structure for realizing angular displacement measurement; in response to the magnetic scale switching to a second state, the magnetic group is arranged along a linear extension to form a strip structure for realizing linear displacement measurement. The magnetic group is designed as a sawtooth structure, the magnetic group is arranged in a curled manner along the circumference to realize angular displacement measurement, and the magnetic group is arranged in a linear extension to realize linear displacement measurement, so that the magnetic scale is compatible with displacement measurement and rotation angle measurement, and the commonality of two kinds of measurement consumables is realized.

Description

Technical Field

[0001] This application relates to the field of displacement measurement, and in particular to a magnetic scale and magnetic grating system. Background Technology

[0002] In the field of precision machining, precision displacement (angle) sensors are an indispensable and important component, often referred to as the ruler of intelligent manufacturing. Their accuracy directly determines the leading position of the processing and manufacturing process.

[0003] A grid-type measuring device is a precision sensor that can accurately calibrate displacement (or rotation angle) and is widely used in the precision manufacturing industry.

[0004] Currently, there are two types of grid scales: linear and disc. However, linear scales can only be used to measure displacement, while disc scales can only be used to measure rotation angle. The two are not compatible, which limits the improvement of production efficiency. Summary of the Invention

[0005] The main technical problem addressed by this application is to provide a magnetic scale and magnetic grating scale system, which solves the problem that existing scales cannot be compatible with displacement measurement and rotation angle measurement.

[0006] To solve the above-mentioned technical problems, the first technical solution provided in this application is: to provide a magnetic scale, wherein, it includes:

[0007] The magnetic array has a sawtooth structure; the magnetic array consists of an even number of magnetic units connected end to end; the magnetic poles of any two adjacent magnetic units are opposite in direction;

[0008] In response to the magnetic scale switching to the first state, the magnetic array is rolled up circumferentially to form a periodic structure for angular displacement measurement.

[0009] In response to the magnetic scale switching to the second state, the magnetic array extends in a straight line to form a strip structure for linear displacement measurement.

[0010] In the periodic structure, the magnetic monomers are uniformly distributed along the circumference; the periodic structure is a centrally symmetric structure.

[0011] Each magnetic monomer includes:

[0012] The substrate is non-magnetic.

[0013] A magnetic component that covers part of the substrate surface, and the side of the magnetic component away from the substrate exhibits a single magnetic pole characteristic;

[0014] The magnetic scale also includes an adhesive portion disposed on the side of the substrate; the adhesive portion is self-adhesive and reusable.

[0015] In the magnetic assembly, adjacent magnetic units are connected by an adhesive part.

[0016] In each magnetic group, adjacent magnetic units are connected diagonally by an adhesive section.

[0017] The magnetic scale includes multiple magnetic groups;

[0018] In response to the magnetic scale switching to the first state, any one of the magnetic groups is rolled up in the circumferential direction to form a periodic structure, or at least two magnetic groups are connected end to end and rolled up in the circumferential direction to form a periodic structure.

[0019] In response to the magnetic scale switching to the second state, any one magnetic group extends along a straight line to form a strip structure, or at least two magnetic groups are connected end to end and extend along a straight line to form a strip structure, or two magnetic groups are aligned and interlocked to form a strip substructure, and at least one strip substructure extends along a straight line to form a strip structure.

[0020] In the strip-shaped substructure, the two magnetic groups have the same structure. After one magnetic group is rotated 180 degrees, it is aligned and engaged with the other magnetic group. The magnetic components of two adjacent magnetic units with the same magnetic pole direction in different magnetic groups are arranged close to each other.

[0021] In the strip-shaped substructure, the edge of the magnetic element coincides with the edge of the substrate in a direction parallel to the magnetic monomer.

[0022] In the strip-shaped substructure, the magnetic elements are arranged to overlap at least partially in the extending direction of the magnetic group.

[0023] The sawtooth structure can be a single-sided sawtooth structure or a double-sided sawtooth structure.

[0024] To address the aforementioned technical problems, the second technical solution provided in this application is: a magnetic scale system, comprising:

[0025] The magnetic scale is the one described above;

[0026] A counter is used to detect changes in the magnetic poles on a magnetic scale and output displacement data.

[0027] The beneficial effects of this application are as follows: Unlike existing technologies, this application provides a magnetic scale and magnetic grating scale system. The magnetic scale includes a magnetic group, which has a sawtooth structure. The magnetic group includes an even number of magnetic units connected end-to-end. The magnetic poles of any two adjacent magnetic units are opposite in direction. In response to the magnetic scale switching to a first state, the magnetic group curls circumferentially to form a periodic structure for angular displacement measurement. In response to the magnetic scale switching to a second state, the magnetic group extends linearly to form a strip structure for linear displacement measurement. By designing the magnetic group as a sawtooth structure, circumferentially curling it for angular displacement measurement, and extending it linearly for linear displacement measurement, the magnetic scale is compatible with both displacement and rotation angle measurements, thus achieving the commonality of both measurement consumables. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0029] Figure 1 This is a three-dimensional structural schematic diagram of the grid-type measuring device provided in this application;

[0030] Figure 2 This is a three-dimensional structural diagram of the magnetic field scale provided in this application;

[0031] Figure 3 This is a structural schematic diagram of the first embodiment of the magnetic scale provided in this application in the first and second states;

[0032] Figure 4 yes Figure 3 Schematic diagram of the structure of a medium magnetic monomer;

[0033] Figure 5 This is a structural schematic diagram of the second embodiment of the magnetic scale provided in this application in the first and second states;

[0034] Figure 6 This is a structural schematic diagram of the third embodiment of the magnetic scale provided in this application in the first and second states;

[0035] Figure 7 This is a structural schematic diagram of the fourth embodiment of the magnetic scale provided in this application in the first and second states;

[0036] Figure 8 yes Figure 7 Schematic diagram of the structure of a medium magnetic monomer;

[0037] Figure 9 This is a structural schematic diagram of the fifth embodiment of the magnetic scale provided in this application in the first and second states;

[0038] Figure 10 yes Figure 9 Schematic diagram of the structure of a medium magnetic monomer;

[0039] Figure 11 This is a schematic diagram of the sixth embodiment of the magnetic scale provided in this application in its first state;

[0040] Figure 12 This is a structural schematic diagram of the seventh embodiment of the magnetic scale provided in this application in the first and second states;

[0041] Figure 13 This is a structural schematic diagram of the eighth embodiment of the magnetic scale provided in this application in the first and second states;

[0042] Figure 14 This is a schematic diagram of the combined structure of the ninth embodiment of the magnetic scale provided in this application in the second state;

[0043] Figure 15 This is a structural schematic diagram of the ninth embodiment of the magnetic scale provided in this application in its first state;

[0044] Figure 16 This is a structural schematic diagram of the tenth embodiment of the magnetic scale provided in this application in the first and second states;

[0045] Figure 17 This is a schematic diagram of the structure of the eleventh embodiment of the magnetic scale provided in this application in a second state.

[0046] Figure 18 This is a schematic diagram of another embodiment of the eleventh embodiment of the magnetic scale provided in this application in a second state;

[0047] Figure 19 This is a schematic diagram of an embodiment of the magnetic scale system provided in this application.

[0048] Explanation of icon numbers:

[0049] 100. Magnetic scale; 1. Magnetic group; 10. Magnetic unit; 11. Substrate; 12. Magnetic component; 13. Adhesion angle; 20. Adhesive part; 111. First magnetic unit; 112. Second magnetic unit; 2. Periodic structure; 3. Strip structure; 31. Strip substructure; 32. Magnetic part; 200. Counter; 300. Magnetic scale system; S. South magnetic pole; N. North magnetic pole. Detailed Implementation

[0050] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0051] In the following description, specific details such as particular system architectures, interfaces, and technologies are presented for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of this application.

[0052] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0053] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0054] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0055] Please see Figures 1 to 2 , Figure 1 This is a three-dimensional structural schematic diagram of the grid-type measuring device provided in this application. Figure 2 This is a three-dimensional structural diagram of the magnetic field scale provided in this application.

[0056] Generally, a set of grating measuring devices consists of two parts: a grating scale and a counter 200, such as... Figure 1As shown. A grid-type scale is marked with equal physical quantities, that is, an equally divided scale. For example, a traditional high-precision mechanical scale uses a contrast substrate with equal spacing; a traditional capacitance scale uses equal capacitance values; and a magnetic field scale uses magnetic fields of equal direction and intensity. Figure 2 As shown.

[0057] When the grid scale moves or rotates with the mechanical device, the number of times the equal physical quantity L repeats is n, which is captured by the counter 200, and the displacement X = L * n is calculated.

[0058] Currently, there are two types of grid scales: linear and disc. However, linear scales can only be used to measure displacement, while disc scales can only be used to measure rotation angle. The two are not compatible, which limits the improvement of production efficiency.

[0059] Please see Figure 3 and Figure 4 , Figure 3 This is a structural schematic diagram of the first embodiment of the magnetic scale provided in this application in the first and second states. Figure 4 yes Figure 3 A schematic diagram of the structure of a medium magnetic monomer.

[0060] To address the aforementioned technical problems, this application provides a magnetic scale 100. The magnetic scale 100 includes a magnetic group 1, which has a sawtooth structure. The magnetic group 1 includes an even number of magnetic units 10 connected end-to-end. The magnetic poles of any two adjacent magnetic units 10 have opposite directions. In response to the magnetic scale 100 switching to a first state, the magnetic group 1 is circumferentially curled to form a periodic structure 2 for angular displacement measurement. In response to the magnetic scale 100 switching to a second state, the magnetic group 1 extends linearly to form a strip structure 3 for linear displacement measurement.

[0061] The magnetic assembly 1 is designed with a sawtooth structure. The magnetic assembly 1 is circumferentially curled to realize angular displacement measurement, and the magnetic assembly 1 is extended along a straight line to realize linear displacement measurement. This makes the magnetic scale 100 compatible with displacement measurement and rotation angle measurement, thereby realizing the commonality of the two measurement consumables.

[0062] The first state is the angular displacement measurement state, and the second state is the linear displacement measurement state.

[0063] In some embodiments, the serrated structure is a single-sided serrated structure or a double-sided serrated structure.

[0064] In some specific embodiments, the serrated structure is a single-sided serrated structure.

[0065] For example, the magnetic monomer 10 has a triangular structure or a trapezoidal structure, etc.

[0066] During linear measurement, it is convenient to calibrate the extension direction of the magnetic scale 100.

[0067] In some other specific embodiments, the serrated structure is a double-sided serrated structure.

[0068] For example, the sawtooth structure is a rhomboid structure or the like.

[0069] Periodic structure 2 refers to a layout structure in which a certain unit (which can be a geometric shape, functional module, etc.) repeats in space according to a certain pattern.

[0070] Opposite magnetic poles refer to two magnets or magnetic regions having opposite magnetic poles, i.e., one is the north magnetic pole N and the other is the south magnetic pole S.

[0071] During the measurement process, the magnetic unit 10 exhibits a single magnetic pole characteristic. This can be understood as the magnetic unit 10 facing the counter 200 with its single magnetic pole characteristic surface during the measurement (see...). Figure 19 This enables the counter 200 to identify the magnetic field changes of a single magnetic pole of the magnetic unit 10.

[0072] In some embodiments, in the periodic structure 2, the magnetic monomers 10 are uniformly distributed along the circumference; the periodic structure 2 is a centrally symmetric structure.

[0073] Circumferential uniform distribution refers to the arrangement of multiple identical or similar units around a central point or axis at equal angular intervals.

[0074] For example, in the periodic structure 2, the magnetic monomers 10 are arranged around a center at equal angular intervals.

[0075] In periodic structure 2, the interval angle between each magnetic unit 10 is related to the number of magnetic units 10. Specifically, the product of the interval angle between each magnetic unit 10 and the number of magnetic units 10 is 360 degrees.

[0076] The periodic structure 2 adopts a centrally symmetrical periodic arrangement, with the magnetic poles of adjacent magnetic units 10 having opposite directions and being evenly distributed at fixed angular intervals, thereby forming a stable periodic magnetic field signal, which is suitable for angular displacement measurement and helps to improve measurement accuracy.

[0077] In some embodiments, each magnetic unit 10 includes a substrate 11 and a magnetic element 12. The substrate 11 is non-magnetic; the magnetic element 12 covers a portion of the surface of the substrate 11, and the side of the magnetic element 12 away from the substrate 11 exhibits a single magnetic pole characteristic; the magnetic scale 100 also includes an adhesive portion 20 disposed on the side of the substrate 11; the adhesive portion 20 is self-adhesive and reusable; in the magnetic group 1, adjacent magnetic units 10 are connected by the adhesive portion 20.

[0078] For example, the magnetic element 12 is located on one side surface of the substrate 11.

[0079] The substrate 11 is non-magnetic to reduce magnetic interference between different magnetic components 12.

[0080] For example, the substrate 11 may be a material such as rigid plastic or glass.

[0081] For example, substrate 11 does not include magnetic material.

[0082] The shape of the substrate 11 determines the shape of the magnetic element 10. In the direction perpendicular to the magnetic element 10, the orthographic projection pattern of the substrate 11 is the same as the orthographic projection pattern of the magnetic element 10.

[0083] In the magnetic monomer 10, the substrate 11 and the magnetic element 12 may have the same or different shapes.

[0084] For example, the substrate 11 and the magnetic element 12 are both isosceles triangles. Another example is that the substrate 11 is triangular in shape, and the magnetic element 12 is trapezoidal in shape (see...). Figure 6 ).

[0085] The side of the magnetic component 12 away from the substrate 11 exhibits a single magnetic pole characteristic, that is, the side of the magnetic component 12 away from the substrate 11 exhibits either a south magnetic pole characteristic or a north magnetic pole characteristic.

[0086] The magnetic component 12 can be a single-layer structure or a multi-layer structure, as long as the side of the magnetic component 12 away from the substrate 11 exhibits a single magnetic pole characteristic. For example, the magnetic component 12 has multiple stacked magnetic layers (not shown), each magnetic layer having two oppositely arranged magnetic poles in a direction perpendicular to the substrate 11.

[0087] Specifically, the magnetic element 12 has a single-layer structure and has a north magnetic pole N and a south magnetic pole S arranged opposite to each other. One of the south magnetic pole S and the north magnetic pole N of the magnetic element 12 is located on the side surface of the magnetic element 12 away from the substrate 11, and the other is located on the side surface of the magnetic element 12 closer to the substrate 11, so that the magnetic element 12 exhibits a single magnetic pole characteristic.

[0088] The magnetic component 12 determines the direction of the magnetic poles of the magnetic unit 10.

[0089] For example, if the side of the magnetic element 12 away from the substrate 11 in the magnetic monomer 10 exhibits north magnetic pole characteristics, then the magnetic monomer 10 exhibits north magnetic pole characteristics. If the side of the magnetic element 12 away from the substrate 11 in the magnetic monomer 10 exhibits south magnetic pole characteristics, then the magnetic monomer 10 exhibits south magnetic pole characteristics.

[0090] Based on the magnetic pole direction, the magnetic unit 10 is divided into a first magnetic unit 111 and a second magnetic unit 112. One of the first magnetic unit 111 and the second magnetic unit 112 exhibits south magnetic pole characteristics, and the other exhibits north magnetic pole characteristics. That is, the first magnetic unit 111 and the second magnetic unit 112 can be regarded as two magnetic poles with opposite magnetic pole directions on the magnetic scale 100.

[0091] In magnetic assembly 1, the first magnetic unit 111 and the second magnetic unit 112 are alternately arranged along a preset direction. The preset direction is either a linear direction or a circumferential direction.

[0092] For example, the first magnetic monomer 111 exhibits south magnetic pole characteristics, and the second magnetic monomer 112 exhibits north magnetic pole characteristics.

[0093] The reusable adhesive part 20 means that the adhesive part 20 can still maintain its adhesive properties after multiple pasting and removal, and will not significantly lose its stickiness or leave residue due to the increase of the number of uses.

[0094] An adhesive portion 20 is disposed on the side of the substrate 11 so that the substrates 11 of different magnetic monomers 10 can be connected through the adhesive portion 20, thereby realizing the interconnection between the magnetic monomers 10.

[0095] There are no restrictions on the material of the adhesive part 20; it can be selected according to actual needs.

[0096] For example, the adhesive portion 20 may be located on one side of the substrate 11, and / or the adhesive portion 20 may be located at the intersection of the two intersecting sides of the substrate 11 (i.e., at the corner).

[0097] In some embodiments, the magnetic scale 100 includes a magnetic group 1.

[0098] For example, the magnetic assembly 1 is rolled up circumferentially and connected end to end to form a periodic structure 2, thereby realizing angular displacement measurement; the magnetic assembly 1 is arranged to extend in a straight line to form a strip structure 3, thereby realizing linear displacement measurement.

[0099] In magnetic assembly 1, the magnetic components 12 are spaced apart to avoid magnetic interference.

[0100] In some embodiments, the magnetic element 12 is disposed in the central region of the substrate 11 and spaced apart from the edge of the substrate 11. In other embodiments, the magnetic element 12 is disposed overlapping the edge portion of the substrate 11.

[0101] In some embodiments, the substrate 11 has a triangular structure, and the adhesive portion 20 is located on one side of the substrate 11. In the periodic structure 2, the apex of each magnetic unit 10 is located at the center of the periodic structure 2, and the spacing angle between each magnetic unit 10 is equal to the angle of the apex of the substrate 11.

[0102] For example, the apex angle of the substrate 11 is 30 degrees, and the 12 magnetic monomers 10 in the periodic structure 2 are uniformly distributed along the circumference, with the interval angle between each magnetic monomer 10 being 30 degrees.

[0103] In periodic structure 2, the magnetic units 10 are arranged in contact with each other. In strip structure 3, the magnetic units 10 are arranged at intervals.

[0104] For example, such as Figure 4 As shown, both the substrate 11 and the magnetic component 12 are isosceles triangular structures, with the adhesive portion 20 located outside the base edge of the substrate 11. The magnetic component 12 is centrally located on the surface of the substrate 11.

[0105] In other embodiments, the periodic structure 2 may include other numbers of magnetic monomers 10, which are not limited here and can be selected according to actual needs.

[0106] Please see Figures 4 to 6 , Figure 5 This is a structural schematic diagram of the second embodiment of the magnetic scale provided in this application in the first and second states. Figure 6 This is a structural schematic diagram of the third embodiment of the magnetic scale provided in this application in the first and second states.

[0107] In other embodiments, such as Figure 5 As shown, both the substrate 11 and the magnetic component 12 can be fan-shaped structures. The adhesive portion 20 is located outside the arc-shaped edge of the substrate 11, and the arc-shaped edge of the magnetic component 12 partially overlaps with the arc-shaped edge of the substrate 11. Or as... Figure 6 As shown, the substrate 11 has an isosceles triangular structure, and the magnetic element 12 has a trapezoidal structure, with the upper base of the trapezoidal structure being smaller than the lower base. The waist of the magnetic element 12 coincides with a waist portion of the substrate 11. The adhesive portion 20 is located outside the lower base of the substrate 11. Alternatively, the substrate 11 can also be any other structure with symmetrically arranged sides.

[0108] The structure of the adhesive part 20 is not subject to many restrictions here; it can be selected according to actual needs.

[0109] Please see, Figures 7 to 10 , Figure 7 This is a structural schematic diagram of the fourth embodiment of the magnetic scale provided in this application, in the first and second states. Figure 8 yes Figure 7 A schematic diagram of the structure of a magnetic monomer. Figure 9 This is a structural schematic diagram of the fifth embodiment of the magnetic scale provided in this application in the first and second states. Figure 10 yes Figure 9 A schematic diagram of the structure of a medium magnetic monomer.

[0110] In some embodiments, in each magnetic group 1, adjacent magnetic units 10 are connected diagonally by an adhesive portion 20.

[0111] The corner used for bonding in the magnetic monomer 10 is defined as the bonding angle 13. The bonding angle 13 of the magnetic monomer 10 is the same as the bonding angle 13 of the substrate 11. Adjacent magnetic monomers 10 are connected diagonally through the bonding angle 13. That is, the bonding angle 13 of adjacent magnetic monomers 10 is connected to each other through the adhesive part 20.

[0112] In each magnetic unit 10, the magnetic element 12 and the substrate 11 are arranged at intervals with an adhesion angle 13.

[0113] For example, when the magnetic assembly 1 is arranged to extend in a straight line, adjacent magnetic units 10 in each magnetic assembly 1 are connected diagonally by adhesive portions 20; and when the magnetic assembly 1 is bent, adjacent magnetic units 10 in each magnetic assembly 1 are connected diagonally by adhesive portions 20.

[0114] For example, in magnetic assembly 1, each magnetic unit 10 includes two bonding angles 13 so that magnetic assembly 1 can be connected end to end. In response to the magnetic scale 100 switching to a first state, in periodic structure 2, the vertices of the bonding angles 13 located at the same position in each magnetic unit 10 are uniformly distributed circumferentially. Specifically, magnetic unit 10 includes a first bonding angle (not shown) and a second bonding angle (not shown), the vertices of all first bonding angles are uniformly distributed circumferentially, and the vertices of all second bonding angles are uniformly distributed circumferentially.

[0115] In response to the magnetic scale 100 switching to the first state, the vertices of the bonding angles 13 of each magnetic unit 10 in the periodic structure 2 are distributed circumferentially. The distances from the center of the periodic structure 2 to the vertices of the bonding angles 13 of each magnetic unit 10 are all equal. That is, the distance from the center of the periodic structure 2 to the vertices of the first bonding angles of each magnetic unit 10 is the same as the distance from the center of the periodic structure 2 to the vertices of the second bonding angles of each magnetic unit 10.

[0116] When the magnetic scale 100 switches to the second state, the vertices of the bonding angles 13 of each magnetic unit 10 in each magnetic group 1 are located on the same straight line.

[0117] Multiple magnetic units 10 are connected by corner joints, so that when the magnetic scale 100 switches to the first state, the magnetic group 1 can bend circumferentially and form a periodic magnetic field structure, thereby improving the flexibility and adaptability of the magnetic scale 100.

[0118] In other embodiments, in the periodic structure 2, adjacent magnetic units 10 can be connected by corner-to-side connections, and the distance from the center of the periodic structure 2 to the vertex of the first bonding angle of each magnetic unit 10 can be different from the distance from the center of the periodic structure 2 to the vertex of the second bonding angle of each magnetic unit 10 (see...). Figure 13 ).

[0119] In some embodiments, such as Figure 7 and Figure 8 As shown, the substrate 11 has a triangular structure, and the adhesive portion 20 is located at least at the corner of the substrate 11. In the periodic structure 2, the apex of each magnetic unit 10 is located at the center of the periodic structure 2, and the spacing angle between each magnetic unit 10 is greater than the angle of the apex of the substrate 11.

[0120] The bottom corner of the substrate 11 is the bonding corner 13, and the adhesive portion 20 at least partially surrounds the bottom corner of the substrate 11.

[0121] For example, the adhesive portion 20 is located outside the bottom edge of the substrate 11 and surrounds the bottom corner of the substrate 11.

[0122] For example, the apex angle of the substrate 11 is 30 degrees, and the 10 magnetic monomers 10 in the periodic structure 2 are uniformly distributed along the circumference, with an interval angle of 36 degrees between each magnetic monomer 10.

[0123] Due to the setting of the adhesive part 20, the magnetic units 10 in the periodic structure 2 are spaced apart except for the vertex of the top corner.

[0124] The specific shape of the adhesive part 20 is not limited here; it can be selected according to actual needs.

[0125] For example, the adhesive portions 20 are connected diagonally to each other (see...). Figure 7 and Figure 8 ), or the adhesive portion 20 is tangentially disposed between the adhesive portions 20 (see Figure 9 and Figure 10 This reduces the contact area between adhesive portions 20, making it easier to flexibly bend the magnetic assembly 1 and to facilitate free combination between magnetic assemblies 1.

[0126] Please see Figure 8 , Figures 11 to 13 , Figure 11 This is a schematic diagram of the sixth embodiment of the magnetic scale provided in this application in its first state. Figure 12 This is a structural schematic diagram of the seventh embodiment of the magnetic scale provided in this application in the first and second states. Figure 13 This is a structural schematic diagram of the eighth embodiment of the magnetic scale provided in this application in the first and second states.

[0127] In other embodiments, such as Figure 11 As shown, the substrate 11 has a triangular structure, and the adhesive portion 20 is located at the bottom edge of the substrate 11. In the periodic structure 2, the vertices of the apex of each magnetic unit 10 are distributed at equal intervals along the circumference, and the angle between each magnetic unit 10 is smaller than the angle of the apex of the substrate 11.

[0128] For example, the apex angle of the substrate 11 is 40 degrees, and the 16 magnetic monomers 10 in the periodic structure 2 are uniformly distributed along the circumference, with the spacing angle between each magnetic monomer 10 being 30 degrees.

[0129] For example, both the substrate 11 and the magnetic element 12 are isosceles triangular structures. In the direction perpendicular to the magnetic unit 10, the orthographic projection pattern of the magnetic element 12 is similar to the orthographic projection pattern of the substrate 11, and the bottom edge of the magnetic element 12 coincides with the bottom edge of the substrate 11.

[0130] In other embodiments, the substrate 11 may be a right-angled triangle, trapezoid, or other regular or irregular shape. The substrate 11 and the magnetic element 12 may have the same or different shapes.

[0131] In some other embodiments, such as Figure 12 As shown, substrate 11 has a rhomboid structure. The first pair of opposite corners of substrate 11 are the two bonding corners 13 of magnetic monomers 10. In the periodic structure 2, the vertices of one of the opposite corners of the second pair of opposite corners of substrate 11 are located at the center of the periodic structure 2, and the spacing angle between each magnetic monomer 10 is greater than the angle of the opposite corner in the second pair of opposite corners of substrate 11.

[0132] Exemplarily, the adhesive portion 20 is located on the outer side of the first pair of opposite corners of the substrate 11, that is, the adhesive portion 20 is located at the corner of the substrate 11. The adhesive portion 20 covers the corresponding corner of the substrate 11, and the outer edge of the adhesive portion 20 is an arc surface. The adhesive portions 20 are tangentially connected to each other.

[0133] For example, the second pair of diagonals of the substrate 11 has an angle of 30 degrees, and the 10 magnetic monomers 10 in the periodic structure 2 are evenly distributed along the circumference, with an interval angle of 36 degrees between each magnetic monomer 10.

[0134] In other embodiments, such as Figure 13 As shown, when the magnetic assembly 1 extends in a straight line, the magnetic units 10 are arranged diagonally opposite each other via adhesive portions 20. When the magnetic assembly 1 is coiled, the magnetic units 10 are arranged diagonally opposite each other via adhesive portions 20. Utilizing the reusability of the adhesive portions 20, the connection position between the connected adhesive portions 20 can change during the state switching process of the magnetic scale 100, allowing for flexible state switching of the magnetic scale 100.

[0135] Please see Figure 7 , Figure 8 , Figures 14 to 18 , Figure 14 This is a schematic diagram of the combined structure of the ninth embodiment of the magnetic scale provided in this application in the second state. Figure 15 This is a structural schematic diagram of the ninth embodiment of the magnetic scale provided in this application in its first state. Figure 16 This is a structural schematic diagram of the tenth embodiment of the magnetic scale provided in this application in the first and second states. Figure 17 This is a schematic diagram of the structure of the eleventh embodiment of the magnetic scale provided in this application in a second state. Figure 18 This is a schematic diagram of another embodiment of the eleventh embodiment of the magnetic scale provided in this application in a second state.

[0136] In some embodiments, the magnetic scale 100 includes a plurality of magnetic groups 1; in response to the magnetic scale 100 switching to a first state, any one magnetic group 1 is curled up in the circumferential direction to form a periodic structure 2, or at least two magnetic groups 1 are connected end to end and curled up in the circumferential direction to form a periodic structure 2; in response to the magnetic scale 100 switching to a second state, any one magnetic group 1 is extended in a straight line to form a strip structure 3, or at least two magnetic groups 1 are connected end to end and extended in a straight line to form a strip structure 3, or two magnetic groups 1 are aligned and interlocked to form a strip substructure 31, and at least one strip substructure 31 is extended in a straight line to form a strip structure 3.

[0137] Utilizing the reusable nature of the adhesive portion 20, the magnetic groups 1 can be freely combined. Specifically, while ensuring that each magnetic group 1 includes an even number of magnetic units 10 connected end-to-end, the number of magnetic units 10 originally included in the magnetic group 1 can be changed by freely splitting or splicing them together. For example, multiple magnetic groups 1 connected end-to-end can form a large magnetic group 1; or, for example, a large magnetic group 1 can be split into multiple smaller magnetic groups 1. The size of the magnetic group 1 is determined by the number of magnetic units 10 in the magnetic group 1.

[0138] In some embodiments, in response to the magnetic scale 100 switching to a first state, any one of the magnetic groups 1 is rolled up circumferentially to form a periodic structure 2. The periodic structure 2 includes a magnetic group 1.

[0139] In other embodiments, in response to the magnetic scale 100 switching to the first state, at least two magnetic groups 1 are connected end-to-end and curled circumferentially to form a periodic structure 2. That is, the periodic structure 2 is composed of multiple magnetic groups 1. In the periodic structure 2, the multiple magnetic groups 1 are connected end-to-end. The size of each magnetic group 1 in the periodic structure 2 can be the same or different, depending on the actual needs.

[0140] The more magnetic elements 10 there are in periodic structure 2, the smaller the angular interval between each magnetic element 10, and the higher the measurement accuracy. The fewer magnetic elements 10 there are in periodic structure 2, the larger the angular interval between each magnetic element 10, which facilitates large-angle measurements.

[0141] Depending on the required measurement accuracy or range, multiple magnetic groups 1 can be freely combined and then rolled up circumferentially to form a periodic structure 2 to achieve angular displacement measurement.

[0142] For example, each magnetic group 1 includes 12 magnetic units 10, and two magnetic groups 1 are connected end-to-end to form a larger magnetic group 1 including 24 magnetic units 10. The larger magnetic group 1 is rolled up circumferentially to form a periodic structure 2. That is, the periodic structure 2 includes 24 magnetic units 10. In response to the magnetic scale 100 switching to the second state, at least two magnetic groups 1 are connected end-to-end and extended in a straight line to form a strip structure 3.

[0143] In some embodiments, in response to the magnetic scale 100 switching to the second state, any one of the magnetic groups 1 extends in a straight line to form a strip structure 3.

[0144] In other embodiments, in response to the magnetic scale 100 switching to the second state, at least two magnetic groups 1 are connected end-to-end and extend in a straight line to form a strip structure 3. That is, multiple magnetic groups 1 are connected end-to-end and extend in a straight line to form a strip structure 3. Compared to a design where the strip structure 3 includes only one magnetic group 1, a design where the strip structure 3 includes multiple magnetic groups 1 can expand the measurement range. The number of magnetic groups 1 is selected according to the measurement range requirements.

[0145] In some other embodiments, in response to the magnetic scale 100 switching to the second state, the two magnetic groups 1 are aligned and engaged to form a strip substructure 31, and at least one strip substructure 31 is arranged to extend in a straight line to form a strip structure 3.

[0146] The strip-shaped substructure 31 is arranged to extend along a straight line.

[0147] For example, the strip structure 3 includes a plurality of strip substructures 31, which are connected end to end along a straight line.

[0148] For example, the strip structure 3 includes a strip substructure 31.

[0149] In some embodiments, in the strip substructure 31, the two magnetic groups 1 have the same structure. After one magnetic group 1 is rotated 180 degrees, it is aligned and engaged with the other magnetic group 1, and the magnetic elements 12 of the two adjacent magnetic units with the same magnetic pole direction in different magnetic groups 1 are arranged close to each other.

[0150] After rotating 180 degrees, one magnetic group 1 aligns and engages with another magnetic group 1. This can be understood as one magnetic group 1 rotating 180 degrees around a certain point or axis and then aligning and engaging with another magnetic group 1.

[0151] For example, a magnetic assembly 1 can be rotated 180 degrees around a point and then aligned and engaged with another magnetic assembly 1.

[0152] Two magnetic groups 1 are aligned and engaged, and the magnetic components 12 of two adjacent magnetic units with the same magnetic pole direction in different magnetic groups 1 are arranged close to each other to form a strip structure 3, thereby realizing linear displacement measurement.

[0153] When the two magnetic groups 1 are aligned and engaged, the magnetic components 12 of two adjacent magnetic units with the same magnetic pole direction in different magnetic groups 1 are arranged close to each other to form a magnetic part 32 in the measurement direction.

[0154] In response to the magnetic scale 100 switching to the second state, the measurement direction is the extension direction of the magnetic group 1.

[0155] In some embodiments, the two magnetic elements 12 in the magnetic section 32 are spaced apart with a small gap to avoid false detections. In other embodiments, the sides of the two magnetic elements 12 in the magnetic section 32 that are close to each other are at least partially in contact.

[0156] In some embodiments, in the strip substructure 31, the edge of the magnetic element 12 is partially aligned with the edge of the substrate 11 in a direction parallel to the magnetic monomer 10.

[0157] For example, the magnetic element 12 is disposed to coincide with one side of the substrate 11 and spaced apart from the other side of the substrate 11.

[0158] For example, the magnetic element 12 is partially overlapped with the two intersecting sides of the substrate 11, and is spaced apart from the other sides.

[0159] In the strip substructure 31, the edges of the magnetic elements 12 are arranged to coincide with the edges of the substrate 11 in a direction parallel to the magnetic unit 10, thereby spacing the magnetic elements 12 apart to reduce magnetic interference.

[0160] In some embodiments, in the strip substructure 31, the magnetic elements 12 are arranged to overlap at least partially in the extending direction of the magnetic group 1.

[0161] In the strip substructure 31, the magnetic elements 12 in the magnetic group 1 are close to each other, and the two magnetic elements 12 are at least partially overlapped in the extending direction of the magnetic group 1, so that the magnetic group 1 can be regarded as one magnetic pole of the magnetic scale 100, rather than as two magnetic poles, thus avoiding mismeasurement during the measurement process.

[0162] In some embodiments, such as Figure 14 and Figure 15 As shown, the magnetic scale 100 includes two magnetic groups 1. In response to the magnetic scale 100 switching to the second state, the two magnetic groups 1 align and interlock to form a strip-shaped substructure 31. The substrate 11 has an isosceles triangular structure, and the adhesive portion 20 is located at the base of the substrate 11. In the periodic structure 2, the apex of each magnetic unit 10 is located at the center of the periodic structure 2, and the angle between each magnetic unit 10 is equal to the angle of the apex of the substrate 11.

[0163] For example, in the direction perpendicular to the magnetic unit 10, the orthographic projection pattern of the magnetic element 12 is similar to the orthographic projection pattern of the substrate 11. One waist of the magnetic element 12 coincides with one waist of the substrate 11.

[0164] The waist length of the magnetic element 12 is less than or equal to half the waist length of the substrate 11, and the distance between the vertex of the magnetic element 12 and the vertex of the substrate 11 is greater than or equal to one-quarter of the waist length of the substrate 11.

[0165] Specifically, the waist length of the magnetic element 12 is equal to half the waist length of the substrate 11, and the distance between the vertex of the magnetic element 12 and the vertex of the substrate 11 is equal to one-quarter of the waist length of the substrate 11. In the strip structure 3, the magnetic elements 12 are completely overlapped in the extending direction of the magnetic group 1. The two magnetic elements 12 in the magnetic section 32 are in contact with each other.

[0166] In other embodiments, such as Figure 16 As shown, the magnetic scale 100 includes two magnetic groups 1. In response to the magnetic scale 100 switching to a second state, the two magnetic groups 1 align and engage to form a strip-shaped substructure 31. The magnetic element 12 can be a trapezoidal structure. The upper base of the trapezoidal structure is smaller than the lower base. The adhesive portion 20 is located outside the lower base of the substrate 11. One waist of the magnetic element 12 coincides with a waist portion of the substrate 11.

[0167] For example, the magnetic element 12 has a symmetrical trapezoidal structure. In a single magnetic unit 10, the substrate 11 has a first waist, and the magnetic element 12 has a second waist. The first waist and the second waist are partially overlapped such that one waist of the magnetic element 12 is partially overlapped with one waist of the substrate 11. The two magnetic elements 12 in the magnetic section 32 are in contact with each other.

[0168] The distance between the intersection of the second waist of the magnetic element 12 and the upper bottom of the magnetic element 12 and the vertex of the apex of the substrate 11 is less than half the waist of the substrate 11. The distance between the intersection of the second waist of the magnetic element 12 and the lower bottom of the magnetic element 12 and the intersection of the bottom corner of the substrate 11 and the second waist is less than half the waist of the substrate 11. This ensures that in the strip substructure 31, the two magnetic elements 12 in the magnetic section 32 are at least partially overlapped in the extending direction of the magnetic group 1, so that the magnetic section 32 can serve as a magnetic pole of the magnetic group 1.

[0169] In some other embodiments, such as Figure 7 and Figure 17 As shown, the magnetic scale 100 includes two magnetic groups 1. In response to the magnetic scale 100 switching to the second state, the two magnetic groups 1 align and interlock to form a strip-shaped substructure 31. The substrate 11 has an isosceles triangular structure, and the adhesive portion 20 is located at the base edge and corners of the substrate 11. In the periodic structure 2, the apex of each magnetic unit 10 is located at the center of the periodic structure 2, and the angle between each magnetic unit 10 is greater than the angle of the apex of the substrate 11.

[0170] For example, the adhesive portions 20 are connected diagonally to each other.

[0171] For example, in the magnetic section 32, two magnetic elements 12 are arranged in contact, and in the strip substructure 31, the magnetic elements 12 are partially overlapped in the extending direction of the magnetic group 1.

[0172] For example, such as Figure 18 As shown, in the magnetic part 32, two magnetic elements 12 are arranged at intervals, and in the strip substructure 31, the magnetic elements 12 are arranged to completely overlap in the extending direction of the magnetic group 1.

[0173] Please see Figure 3 , Figure 4 and Figure 19 , Figure 19 This is a schematic diagram of an embodiment of the magnetic scale system provided in this application.

[0174] This application provides a magnetic scale system 300. The magnetic scale system includes a magnetic scale 100 and a counter 200. The magnetic scale 100 is the magnetic scale 100 described above; the counter 200 is used to detect changes in the magnetic poles on the magnetic scale 100 and output displacement data.

[0175] The counter 200 is displaced relative to the magnetic scale 100. The counter 200 passes through the adjacent south magnetic pole S and north magnetic pole N (the order of the south magnetic pole S and the north magnetic pole N is not restricted) once, and records the magnetic field change once, that is, the count is 1. The count is accumulated in sequence.

[0176] For example, the structure under test drives the magnetic scale 100 to move, so that linear displacement measurement and angle measurement can share the same counter 200, which can save consumables.

[0177] For example, in response to the magnetic scale 100 switching to the first state, macroscopically, a magnetic unit 10 can be understood as a magnetic pole on the magnetic scale 100. The magnetic scale 100 includes south magnetic poles S and north magnetic poles N arranged alternately along the circumference. The counter 200 rotates relative to the magnetic scale 100 around the center of the periodic structure 2, passing through the south magnetic pole S and the north magnetic pole N in sequence, thereby detecting changes in magnetic field strength. For example, if the counter 200 passes through four magnetic units 10 in sequence along the circumference, exhibiting south magnetic pole characteristics-north magnetic pole characteristics-south magnetic pole characteristics-north magnetic pole characteristics respectively, the count will be 3.

[0178] In periodic structure 2, each magnetic element 10 is arranged at equal angular intervals. The measured structure drives the magnetic scale 100 to rotate in conjunction, and the counter 200 records the number of magnetic field changes. The total number of magnetic field changes from the start of rotation to the end of rotation is recorded as n. The angle rotated by the measured structure is α×n. α represents the interval angle between the magnetic elements 10 in periodic structure 2.

[0179] For example, in response to the magnetic scale 100 switching to the second state, if the magnetic scale 100 does not include the strip substructure 31 (see... Figure 14 Macroscopically, a single magnetic unit 10 can be understood as a magnetic pole on the magnetic scale 100. If the magnetic scale 100 includes strip-shaped substructures 31, macroscopically, a single magnetic part 32 can be understood as a magnetic pole on the magnetic scale 100, and each of the remaining magnetic units 10 in the magnetic scale 100, except for the magnetic part 32, can be understood as a magnetic pole on the magnetic scale 100. The magnetic scale 100 includes south magnetic poles S and north magnetic poles N arranged alternately along a straight line. When the counter 200 is linearly displaced relative to the magnetic scale 100, it will pass through the south magnetic pole S and the north magnetic pole N in sequence, thereby detecting changes in magnetic field strength. For example, if the counter 200 passes through the south magnetic pole S-north magnetic pole N-south magnetic pole S-north magnetic pole N in a straight line, the count will be 3.

[0180] In the strip structure 3, the magnetic poles are arranged at equal intervals.

[0181] The measured structure drives the magnetic scale 100 to move linearly in conjunction with it. The counter 200 records the number of magnetic field changes. The total number of magnetic field changes from the start of the movement to the end of the movement is recorded as n. Then, the distance the measured structure moves is b×n. b represents the distance between the magnetic poles in the strip structure 3.

[0182] By setting the magnetic scale 100 as described above, the magnetic scale system 300 can perform linear displacement measurement and angular displacement measurement, realizing the commonality of the two measurement consumables.

[0183] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0184] The above are merely embodiments of this application and do not limit the scope of patent protection of this application. Any equivalent structural or procedural changes made using the content of this application’s specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A magnetic scale, characterized by The magnetic scale comprises: a magnetic group in a sawtooth structure; the magnetic group comprises an even number of magnetic monomers connected head to tail; the magnetic pole directions of any two adjacent magnetic monomers are opposite; in response to the magnetic scale switching to a first state, the magnetic group is curled along the circumference to form a periodic structure for realizing angular displacement measurement; in response to the magnetic scale switching to a second state, the magnetic group is arranged along a straight line to form a strip structure for realizing linear displacement measurement; the magnetic scale comprises a plurality of the magnetic groups; in response to the magnetic scale switching to the first state, any one of the magnetic groups is curled along the circumference to form a periodic structure, or at least two of the magnetic groups are connected head to tail and curled along the circumference to form the periodic structure; in response to the magnetic scale switching to the second state, any one of the magnetic groups is arranged along a straight line to form a strip structure, or at least two of the magnetic groups are connected head to tail and arranged along a straight line to form the strip structure, or two of the magnetic groups are aligned and engaged to form a strip substructure, and at least one of the strip substructures is arranged along a straight line to form the strip structure; each of the magnetic monomers comprises: a substrate without magnetism; a magnetic piece covering part of the surface of the substrate, and the side of the magnetic piece away from the substrate exhibits a single magnetic pole characteristic; the magnetic scale further comprises an adhesive part arranged at the side edge of the substrate; the adhesive part has self-adhesion and is reusable; in the magnetic group, adjacent magnetic monomers are connected through the adhesive part.

2. The magnetic scale of claim 1, wherein, In the periodic structure, the magnetic monomers are uniformly distributed along the circumference; the periodic structure is a central symmetric structure.

3. The magnetic scale of claim 1, wherein, In each of the magnetic groups, adjacent magnetic monomers are connected through the adhesive part at an angle.

4. The magnetic scale of claim 1, wherein, In the strip substructure, two of the magnetic groups have the same structure, one of the magnetic groups is arranged in alignment and engagement with the other magnetic group after being rotated by 180 degrees, and the magnetic pieces of two adjacent magnetic monomers with the same magnetic pole direction in different magnetic groups are arranged close to each other.

5. The magnetic scale of claim 1, wherein, In the strip substructure, in the direction parallel to the magnetic monomers, the edge of the magnetic piece is arranged partially coinciding with the edge of the substrate.

6. The magnetic scale of claim 1, wherein, In the strip substructure, in the extension direction of the magnetic group, the magnetic pieces are arranged at least partially overlapping each other.

7. The magnetic scale of claim 1, wherein, The sawtooth structure is a single-edged sawtooth structure or a double-edged sawtooth structure.

8. A magnetic grid scale system characterized by, The magnetic scale comprises: a magnetic scale according to any one of claims 1 to 7; a counter for detecting the change of magnetic poles on the magnetic scale and outputting displacement data.

Images