Magnetic scale and magnetic railing scale system

Abstract

The invention provides a magnetic scale and a magnetic railing scale system. The magnetic scale comprises a magnetic group which is of a sawtooth structure; the magnetic group comprises an even number of magnetic monomers which are connected end to end; the magnetic pole directions of any two adjacent magnetic monomers are opposite; in response to switching of the magnetic scale to the first state, the magnetic group curls along the circumferential direction to form a periodic structure for realizing angular displacement measurement; and in response to switching of the magnetic scale to the second state, the magnetic group extends along a straight line to form a strip-shaped structure so as to realize linear displacement measurement. According to the magnetic scale, the magnetic group is designed to be of a sawtooth structure, the magnetic group is circumferentially curled to achieve angular displacement measurement, and the magnetic group extends along a straight line to achieve linear displacement measurement, so that the magnetic scale can be compatible with displacement measurement and rotation angle measurement, and the universality of the two measurement consumables is achieved.

Description

Technical Field

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

[0002] In the field of precision machining, precision displacement (angle) sensors are an indispensable and important component, and are compared to the ruler of intelligent manufacturing. Their accuracy directly determines the leading level of the machining and manufacturing links.

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

[0004] Currently, there are two types of grating scales: linear and disc-shaped. However, linear scales can only be used to measure displacement, while disc-shaped scales can only be used to measure rotation angles. The two are incompatible, which limits the improvement of production efficiency. Summary of the Invention

[0005] The main technical problem solved by the present application is to provide a magnetic scale and a magnetic grating scale system to solve the problem in the prior art that scales are not compatible with displacement measurement and rotation angle measurement.

[0006] In order to solve the above technical problems, the first technical solution provided by this application is to provide a magnetic scale, which includes: The magnetic group has a sawtooth structure; the magnetic group includes an even number of magnetic monomers connected end to end; the magnetic poles of any two adjacent magnetic monomers are in opposite directions; In response to the magnetic scale being switched to the first state, the magnetic group curls in the circumferential direction to form a periodic structure for realizing angular displacement measurement; In response to the magnetic scale being switched to the second state, the magnetic group is extended along a straight line to form a strip structure for realizing linear displacement measurement.

[0007] Among them, in the periodic structure, the magnetic monomers are evenly distributed along the circumferential direction; the periodic structure is a centrally symmetrical structure.

[0008] Each magnetic monomer includes: The substrate is non-magnetic; A magnetic member covers a portion of the surface of the substrate, and a side of the magnetic member away from the substrate exhibits a single magnetic pole characteristic; The magnetic scale further includes an adhesive portion disposed on a side of the substrate; the adhesive portion is self-adhesive and reusable; In the magnetic group, adjacent magnetic monomers are connected by bonding portions.

[0009] In each magnetic group, adjacent magnetic monomers are connected diagonally via bonding portions.

[0010] Wherein, the magnetic scale includes a plurality of magnetic groups; In response to the magnetic scale being switched to the first state, any one of the magnetic groups curls circumferentially to form a periodic structure, or at least two magnetic groups are connected end to end and curled circumferentially to form a periodic structure; In response to the magnetic scale switching to the second state, any one magnetic group is extended along a straight line to form a strip structure, or at least two magnetic groups are connected end to end and extended along a straight line to form a strip structure, or two magnetic groups are aligned and bitten to form a strip substructure, and at least one strip substructure is extended along a straight line to form a strip structure.

[0011] Among them, in the strip substructure, the structures of the two magnetic groups are the same. After one magnetic group is rotated 180 degrees, it is aligned and engaged with the other magnetic group, and the magnetic parts of two adjacent magnetic monomers with the same magnetic pole direction in different magnetic groups are arranged close to each other.

[0012] Wherein, in the strip-shaped substructure, in a direction parallel to the magnetic monomer, the edge of the magnetic member partially overlaps with the edge of the substrate.

[0013] Wherein, in the strip-shaped substructure, in the extension direction of the magnetic group, the magnetic members are at least partially overlapped.

[0014] The sawtooth structure is a single-sided sawtooth structure or a double-sided sawtooth structure.

[0015] In order to solve the above technical problems, the second technical solution provided by this application is to provide a magnetic scale system, which includes: Magnetic scale, which is the magnetic scale mentioned above; Counter, used to detect the change of magnetic poles on the magnetic scale and output displacement data.

[0016] Beneficial effects of the present application: Different from the prior art, the present application provides a magnetic scale and magnetic scale system, wherein the magnetic scale includes a magnetic group, which has a sawtooth structure; the magnetic group includes an even number of magnetic monomers connected end to end; the magnetic poles of any two adjacent magnetic monomers are in opposite directions; in response to the magnetic scale switching to a first state, the magnetic group curls circumferentially to form a periodic structure for realizing angular displacement measurement; in response to the magnetic scale switching to a second state, the magnetic group extends along a straight line to form a strip structure for realizing linear displacement measurement. By designing the magnetic group as a sawtooth structure, curling the magnetic group circumferentially to realize angular displacement measurement, and extending the magnetic group along a straight line to realize linear displacement measurement, the magnetic scale is compatible with displacement measurement and rotation angle measurement, thereby realizing the commonality of the two measurement consumables. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technical workers in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of the grid-type measurement device provided by this application; Figure 2 Schematic diagram of the three-dimensional structure of the magnetic field scale provided by this application; Figure 3 2 is a schematic structural diagram of a first embodiment of the magnetic scale provided by the present application in a first state and a second state; Figure 4 yes Figure 3 Schematic diagram of the structure of the magnetic monomer; Figure 5 2 is a schematic structural diagram of a second embodiment of the magnetic scale provided by the present application in a first state and a second state; Figure 6 2 is a schematic structural diagram of a third embodiment of the magnetic scale provided by the present application in a first state and a second state; Figure 7 2 is a schematic structural diagram of a fourth embodiment of the magnetic scale provided by the present application in a first state and a second state; Figure 8 yes Figure 7 Schematic diagram of the structure of the magnetic monomer; Figure 9 2 is a schematic structural diagram of a fifth embodiment of the magnetic scale provided by the present application in a first state and a second state; Figure 10 yes Figure 9 Schematic diagram of the structure of the magnetic monomer; Figure 11 This is a schematic structural diagram of the sixth embodiment of the magnetic scale provided by the present application in the first state; Figure 12 2 is a schematic structural diagram of a seventh embodiment of the magnetic scale provided by the present application in a first state and a second state; Figure 13 2 is a schematic structural diagram of an eighth embodiment of the magnetic scale provided by the present application in a first state and a second state; Figure 14 This is a schematic diagram of the combined structure of the ninth embodiment of the magnetic scale provided by the present application in the second state; Figure 15 This is a schematic structural diagram of the ninth embodiment of the magnetic scale provided by the present application in the first state; Figure 162 is a schematic structural diagram of a tenth embodiment of the magnetic scale provided by the present application in a first state and a second state; Figure 17 This is a structural diagram of an embodiment of the eleventh embodiment of the magnetic scale provided by the present application in the second state; Figure 18 This is a structural diagram of another embodiment of the eleventh embodiment of the magnetic scale provided by the present application in the second state; Figure 19 It is a structural diagram of an embodiment of a magnetic scale system provided by this application.

[0019] Description of Figure Numbers: 100. Magnetic scale; 1. Magnetic group; 10. Magnetic unit; 11. Substrate; 12. Magnetic element; 13. Bonding angle; 20. Bonding portion; 111. First magnetic unit; 112. Second magnetic unit; 2. Periodic structure; 3. Strip structure; 31. Strip substructure; 32. Magnetic portion; 200. Counter; 300. Magnetic scale system; S, South magnetic pole; N, North magnetic pole. DETAILED DESCRIPTION

[0020] The following describes the embodiments of the present application in detail with reference to the accompanying drawings.

[0021] In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0022] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] The terms "first," "second," and "third" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features identified. Therefore, features identified as "first," "second," or "third" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined. All directional designations in the embodiments of this application (such as up, down, left, right, front, back, etc.) are intended only to illustrate the relative positional relationships and movement of components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional designations will also change accordingly. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to such process, method, product, or apparatus.

[0024] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

[0025] See also Figures 1 to 2 , Figure 1 is a schematic diagram of the three-dimensional structure of the grid type measurement device provided by this application, Figure 2 It is a schematic diagram of the three-dimensional structure of the magnetic field scale provided in this application.

[0026] Generally speaking, a set of grid type measuring devices includes two parts: a grid type scale and a counter 200. Figure 1 As shown. The grid scale is engraved with equal physical quantities, that is, an equally divided scale. For example, a traditional high-precision mechanical scale is a contrast substrate with equal spacing, a traditional capacitance scale is an equal amount of capacitance, and a magnetic field scale is a magnetic field with equal direction and strength, such as Figure 2 shown.

[0027] When the grating scale moves or rotates following the mechanical device, the number of times n that the same physical quantity L appears repeatedly is captured by the counter 200, thereby calculating the displacement X=L*n.

[0028] Currently, there are two types of grating scales: linear and disc-shaped. However, linear scales can only be used to measure displacement, while disc-shaped scales can only be used to measure rotation angles. The two are incompatible, which limits the improvement of production efficiency.

[0029] See also Figure 3 and Figure 4 , Figure 3 This is a structural diagram of the first embodiment of the magnetic scale provided by the present application in the first state and the second state. Figure 4 yes Figure 3 Schematic diagram of the structure of the magnetic monomer.

[0030] To address the above technical issues, the present application provides a magnetic scale 100. The magnetic scale 100 includes a magnetic group 1 having a sawtooth structure. The magnetic group 1 comprises an even number of magnetic units 10 connected end to end. The magnetic poles of any two adjacent magnetic units 10 are in opposite directions. When the magnetic scale 100 switches to a first state, the magnetic group 1 curls circumferentially to form a periodic structure 2 for angular displacement measurement. When the magnetic scale 100 switches to a second state, the magnetic group 1 extends linearly to form a strip-like structure 3 for linear displacement measurement.

[0031] The magnetic group 1 is designed as a sawtooth structure, and the magnetic group 1 is curled circumferentially to achieve angular displacement measurement, and the magnetic group 1 is extended along a straight line to achieve linear displacement measurement, so that the magnetic scale 100 is compatible with displacement measurement and rotation angle measurement, thereby achieving the commonality of the two measurement consumables.

[0032] The first state is an angular displacement measurement state, and the second state is a linear displacement measurement state.

[0033] In some embodiments, the sawtooth structure is a single-sided sawtooth structure or a double-sided sawtooth structure.

[0034] In some specific embodiments, the sawtooth structure is a single-sided sawtooth structure.

[0035] Exemplarily, the magnetic unit 10 has a triangular structure or a trapezoidal structure.

[0036] During the linear measurement process, it is convenient to calibrate the extension direction of the magnetic scale 100 .

[0037] In some other specific embodiments, the sawtooth structure is a double-sided sawtooth structure.

[0038] Exemplarily, the sawtooth structure is a diamond structure or the like.

[0039] Periodic structure 2 refers to a layout structure in which a unit (which can be a geometric shape, functional module, etc.) appears repeatedly in space according to a certain pattern.

[0040] Opposite magnetic poles refer to two magnets or magnetic regions with opposite magnetic poles, i.e. one with the north magnetic pole N and the other with the south magnetic pole S.

[0041] During the measurement process, the magnetic monomer 10 exhibits a single magnetic pole characteristic. It can be understood that during the measurement process, the magnetic monomer 10 faces the counter 200 (see Figure 19 ), so that the counter 200 can identify the magnetic field changes of a single magnetic pole of the magnetic unit 10.

[0042] In some embodiments, in the periodic structure 2 , the magnetic monomers 10 are evenly distributed along the circumferential direction; and the periodic structure 2 is a centrosymmetric structure.

[0043] Circumferentially uniform distribution means that multiple identical or similar units are arranged at equal angular intervals around a central point or axis.

[0044] For example, in the periodic structure 2 , the magnetic units 10 are arranged around a center at equal angular intervals.

[0045] In the periodic structure 2 , the spacing angle between the magnetic monomers 10 is related to the number of the magnetic monomers 10 . Specifically, the product of the spacing angle between the magnetic monomers 10 and the number of the magnetic monomers 10 is 360 degrees.

[0046] The periodic structure 2 adopts a centrosymmetric periodic arrangement, in which the magnetic poles of adjacent magnetic units 10 are in opposite directions and are evenly distributed at fixed angular intervals, thereby forming a stable periodic magnetic field signal suitable for angular displacement measurement and helping to improve measurement accuracy.

[0047] In some embodiments, each magnetic unit 10 includes a substrate 11 and a magnetic member 12. The substrate 11 is non-magnetic; the magnetic member 12 covers a portion of the surface of the substrate 11, and the side of the magnetic member 12 facing 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.

[0048] Exemplarily, the magnetic member 12 is located on one side surface of the substrate 11 .

[0049] The substrate 11 is non-magnetic to reduce magnetic interference between different magnetic components 12 .

[0050] For example, the substrate 11 may be made of hard plastic, glass or other materials.

[0051] Exemplarily, the substrate 11 does not include magnetic substances.

[0052] The shape of the substrate 11 determines the shape of the magnetic unit 10. In the direction perpendicular to the magnetic unit 10, the orthographic projection of the substrate 11 is the same as the orthographic projection of the magnetic unit 10.

[0053] In the magnetic unit 10 , the shapes of the substrate 11 and the magnetic member 12 may be the same or different.

[0054] For example, the substrate 11 and the magnetic member 12 are both in the shape of an isosceles triangle. For another example, the substrate 11 is in the shape of a triangle, and the magnetic member 12 is in the shape of a trapezoid (see FIG. Figure 6 ).

[0055] The side of the magnetic member 12 away from the substrate 11 exhibits a single magnetic pole characteristic, that is, the side of the magnetic member 12 away from the substrate 11 exhibits a south magnetic pole characteristic or a north magnetic pole characteristic.

[0056] The magnetic member 12 can have a single-layer structure or a multi-layer structure, as long as the side of the magnetic member 12 away from the substrate 11 exhibits a single magnetic polarity. For example, the magnetic member 12 may have multiple stacked magnetic layers (not shown), each of which has two oppositely oriented magnetic poles arranged perpendicular to the substrate 11.

[0057] Specifically, the magnetic member 12 has a single-layer structure and has a north magnetic pole N and a south magnetic pole S that are arranged opposite each other. One of the south magnetic pole S and the north magnetic pole N of the magnetic member 12 is located on the side of the magnetic member 12 away from the substrate 11, and the other is located on the side of the magnetic member 12 close to the substrate 11, so that the magnetic member 12 exhibits a single magnetic pole characteristic.

[0058] The magnetic element 12 determines the magnetic pole direction of the magnetic unit 10 .

[0059] For example, if the side of the magnetic element 12 in the magnetic unit 10 that is away from the substrate 11 exhibits a north magnetic pole characteristic, then the magnetic unit 10 exhibits a north magnetic pole characteristic. If the side of the magnetic element 12 in the magnetic unit 10 that is away from the substrate 11 exhibits a south magnetic pole characteristic, then the magnetic unit 10 exhibits a south magnetic pole characteristic.

[0060] Based on the magnetic polarity, 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 polarity characteristics, while the other exhibits north magnetic polarity characteristics. In other words, the first magnetic unit 111 and the second magnetic unit 112 can be considered as two magnetic poles with opposite magnetic polarity directions in the magnetic scale 100.

[0061] In the magnetic group 1 , the first magnetic units 111 and the second magnetic units 112 are alternately arranged in sequence along a preset direction, which is a linear direction or a circumferential direction.

[0062] Exemplarily, the first magnetic unit 111 exhibits a south magnetic pole characteristic, and the second magnetic unit 112 exhibits a north magnetic pole characteristic.

[0063] The adhesive portion 20 is reusable in that it can maintain its adhesive properties after being attached and removed multiple times, and will not significantly lose its adhesiveness or leave residue due to an increase in the number of uses.

[0064] The adhesive portion 20 is disposed on the side of the substrate 11 so that the substrates 11 of different magnetic units 10 can be connected via the adhesive portion 20 , thereby achieving mutual connection between the magnetic units 10 .

[0065] There is no limitation on the material of the adhesive portion 20 , and the material can be selected according to actual needs.

[0066] For example, the adhesive portion 20 may be located at one side of the substrate 11 , and / or the adhesive portion 20 may be located at an intersection (ie, a corner) of two intersecting sides of the substrate 11 .

[0067] In some embodiments, the magnetic scale 100 includes a magnetic group 1 .

[0068] Exemplarily, the magnetic group 1 is curled along the circumferential direction and connected end to end to form a periodic structure 2, thereby realizing angular displacement measurement; the magnetic group 1 is extended along a straight line to form a strip structure 3, thereby realizing linear displacement measurement.

[0069] In the magnetic assembly 1 , the magnetic members 12 are spaced apart to avoid magnetic interference.

[0070] In some embodiments, the magnetic member 12 is disposed in the middle region of the substrate 11 and spaced apart from the edge of the substrate 11. In other embodiments, the magnetic member 12 is overlapped with the edge of the substrate 11.

[0071] In some embodiments, the substrate 11 is 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 angle of the substrate 11.

[0072] For example, the top angle of the substrate 11 is 30 degrees, the 12 magnetic units 10 in the periodic structure 2 are evenly distributed along the circumference, and the interval angle between the magnetic units 10 is 30 degrees.

[0073] In the periodic structure 2, the magnetic units 10 are arranged in contact with each other. In the strip structure 3, the magnetic units 10 are arranged at intervals.

[0074] For example, Figure 4As shown, the substrate 11 and the magnetic member 12 are both isosceles triangle structures, and the bonding portion 20 is located outside the bottom edge of the substrate 11. The magnetic member 12 is centrally located on the surface of the substrate 11.

[0075] In other embodiments, the periodic structure 2 may include other numbers of magnetic units 10 , which are not restricted here and can be selected based on actual needs.

[0076] See also Figures 4 to 6 , Figure 5 This is a structural diagram of a second embodiment of the magnetic scale provided by the present application in the first state and the second state. Figure 6 1 is a structural diagram of a third embodiment of the magnetic scale provided by the present application in a first state and a second state.

[0077] In other embodiments, Figure 5 As shown, the substrate 11 and the magnetic member 12 can be fan-shaped structures, the bonding portion 20 is located outside the arc-shaped edge of the substrate 11, and the arc-shaped edge of the magnetic member 12 partially overlaps with the arc-shaped edge of the substrate 11. Figure 6 As shown, substrate 11 is an isosceles triangle structure, and magnetic member 12 is a trapezoidal structure. The upper base of the trapezoidal structure is smaller than the lower base, and the waist of magnetic member 12 is arranged to overlap with a waist portion of substrate 11. Adhesive portion 20 is located outside the lower base of substrate 11. Alternatively, substrate 11 can also have other structures with symmetrically arranged two sides.

[0078] The structure of the bonding portion 20 is not particularly limited and may be selected based on actual needs.

[0079] Please refer to Figures 7 to 10 , Figure 7 This is a structural diagram of a fourth embodiment of the magnetic scale provided by the present application in the first state and the second state. Figure 8 yes Figure 7 Schematic diagram of the structure of the magnetic monomer, Figure 9 This is a structural diagram of the fifth embodiment of the magnetic scale provided by the present application in the first state and the second state. Figure 10 yes Figure 9 Schematic diagram of the structure of the magnetic monomer.

[0080] In some embodiments, in each magnetic group 1 , adjacent magnetic units 10 are connected diagonally via bonding portions 20 .

[0081] The corners used for bonding in the magnetic monomer 10 are defined as bonding corners 13. The bonding corners 13 of the magnetic monomer 10 are the bonding corners 13 of the substrate 11. Adjacent magnetic monomers 10 are connected corner to corner via the bonding corners 13. That is, the bonding corners 13 of adjacent magnetic monomers 10 are connected via the adhesive portion 20.

[0082] In each magnetic unit 10 , the bonding corners 13 between the magnetic member 12 and the substrate 11 are spaced apart.

[0083] Illustratively, when the magnetic group 1 is extended in a straight line, adjacent magnetic monomers 10 in each magnetic group 1 are connected diagonally by the adhesive portion 20 ; and when the magnetic group 1 is bent, adjacent magnetic monomers 10 in each magnetic group 1 are connected diagonally by the adhesive portion 20 .

[0084] For example, in magnetic group 1, each magnetic unit 10 includes two bonding angles 13, allowing the magnetic group 1 to be connected end to end. In response to the magnetic scale 100 switching to the first state, the vertices of the bonding angles 13 located at the same position in each magnetic unit 10 in the periodic structure 2 are evenly distributed along the circumference. Specifically, the magnetic units 10 include first bonding angles (not shown) and second bonding angles (not shown). The vertices of all first bonding angles are evenly distributed along the circumference, and the vertices of all second bonding angles are evenly distributed along the circumference.

[0085] In response to the magnetic scale 100 switching to the first state, the vertices of the bonding angles 13 of each magnetic element 10 in the periodic structure 2 are distributed along the circumference. The distances from the center of the periodic structure 2 to the vertices of the bonding angles 13 of each magnetic element 10 are all equal. In other words, the distance from the center of the periodic structure 2 to the vertices of the first bonding angles of each magnetic element 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 element 10.

[0086] In response to the magnetic scale 100 being switched to the second state, the vertices of the bonding angles 13 of the magnetic units 10 in each magnetic group 1 are located on the same straight line.

[0087] The plurality of magnetic units 10 are connected by corner docking, 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 flexible deformation ability and winding adaptability of the magnetic scale 100.

[0088] In other embodiments, in the periodic structure 2, adjacent magnetic monomers 10 may be connected by diagonally opposite sides, and the distance from the center of the periodic structure 2 to the vertex of the first bonding angle of each magnetic monomer 10 may be different from the distance from the center of the periodic structure 2 to the vertex of the second bonding angle of each magnetic monomer 10 (see Figure 13 ).

[0089] In some embodiments, as Figure 7 and Figure 8 As shown, the substrate 11 is a triangular structure, and the bonding portion 20 is located at least at the corner of the substrate 11. In the periodic structure 2, the apex of the vertex 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 vertex of the substrate 11.

[0090] The bottom corner of the substrate 11 is a bonding corner 13 , and the adhesive portion 20 at least partially surrounds the bottom corner of the substrate 11 .

[0091] Exemplarily, the adhesive portion 20 is located outside the bottom edge of the substrate 11 and surrounds the bottom corner of the substrate 11 .

[0092] For example, the top angle of the substrate 11 is 30 degrees, the 10 magnetic units 10 in the periodic structure 2 are evenly distributed along the circumference, and the interval angle between the magnetic units 10 is 36 degrees.

[0093] Due to the arrangement of the adhesive portion 20 , the magnetic units 10 in the periodic structure 2 are spaced apart from the vertices of the vertices.

[0094] The specific shape of the adhesive portion 20 is not particularly limited and may be selected based on actual needs.

[0095] For example, the bonding parts 20 are connected diagonally to each other (see Figure 7 and Figure 8 ), or the bonding portion 20 is tangentially arranged with the bonding portion 20 (see Figure 9 and Figure 10 ), so as to reduce the contact area between the bonding parts 20 and the bonding parts 20, facilitate flexible bending of the magnetic group 1 and facilitate the free combination of the magnetic groups 1.

[0096] See also Figure 8 , Figures 11 to 13 , Figure 11 This is a structural diagram of the sixth embodiment of the magnetic scale provided by the present application in the first state. Figure 12 This is a structural diagram of the seventh embodiment of the magnetic scale provided by the present application in the first state and the second state. Figure 13 1 is a structural diagram of an eighth embodiment of the magnetic scale provided by the present application in a first state and a second state.

[0097] In other embodiments, Figure 11 As shown, the substrate 11 is a triangular structure, and the bonding portion 20 is located at the bottom edge of the substrate 11. In the periodic structure 2, the vertices of the vertices of the magnetic monomers 10 are equidistantly spaced along the circumference, and the spacing angle between the magnetic monomers 10 is smaller than the angle of the vertices of the substrate 11.

[0098] For example, the top angle of the substrate 11 is 40 degrees, the 16 magnetic units 10 in the periodic structure 2 are evenly distributed along the circumference, and the interval angle between the magnetic units 10 is 30 degrees.

[0099] For example, the substrate 11 and the magnetic member 12 are both isosceles triangle structures. In a direction perpendicular to the magnetic unit 10, the orthographic projection of the magnetic member 12 is similar to that of the substrate 11, and the bottom edge of the magnetic member 12 partially overlaps with the bottom edge of the substrate 11.

[0100] In other embodiments, the substrate 11 may be in other regular or irregular shapes, such as a right triangle structure, a trapezoidal structure, etc. The shapes of the substrate 11 and the magnetic member 12 may be the same or different.

[0101] In some other embodiments, Figure 12 As shown, substrate 11 has a diamond-shaped structure. The first pair of diagonal corners of substrate 11 correspond to the two bonding corners 13 of magnetic elements 10. In periodic structure 2, the vertices of one of the second pair of diagonal corners of substrate 11 are located at the center of periodic structure 2, and the spacing angle between magnetic elements 10 is greater than the angle of the diagonal corners of the second pair of diagonal corners of substrate 11.

[0102] Exemplarily, the bonding portions 20 are located outside the first pair of diagonal corners of the substrate 11, i.e., at the corners of the substrate 11. The bonding portions 20 wrap around the corresponding corners of the substrate 11, and the outer edges of the bonding portions 20 are arc-shaped surfaces. The bonding portions 20 are tangentially connected to each other.

[0103] For example, the angle of the second pair of diagonals of the substrate 11 is 30 degrees, the 10 magnetic units 10 in the periodic structure 2 are evenly distributed along the circumference, and the interval angle between the magnetic units 10 is 36 degrees.

[0104] In other embodiments, Figure 13 As shown, when the magnetic assembly 1 is arranged in a straight line, the magnetic elements 10 are arranged diagonally with the adhesive portions 20. When the magnetic assembly 1 is curled, the magnetic elements 10 are arranged diagonally with the adhesive portions 20. The reusability of the adhesive portions 20 allows the connection positions of connected adhesive portions 20 to be changed during the state switching of the magnetic scale 100, facilitating flexible state switching of the magnetic scale 100.

[0105] See also 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 by the present application in the second state. Figure 15 This is a schematic structural diagram of the ninth embodiment of the magnetic scale provided by the present application in the first state. Figure 16 is a structural diagram of the tenth embodiment of the magnetic scale provided by the present application in the first state and the second state, Figure 17 is a structural diagram of an embodiment of the eleventh embodiment of the magnetic scale provided by the present application in the second state. Figure 181 is a structural diagram of another embodiment of the eleventh embodiment of the magnetic scale provided by the present application in the second state.

[0106] In some embodiments, the magnetic scale 100 includes multiple magnetic groups 1; in response to the magnetic scale 100 switching to the first state, any one of the magnetic groups 1 is curled circumferentially to form a periodic structure 2, or at least two magnetic groups 1 are connected end to end and curled circumferentially to form a periodic structure 2; in response to the magnetic scale 100 switching to the second state, any one of the magnetic groups 1 is extended along a straight line to form a strip structure 3, or at least two magnetic groups 1 are connected end to end and extended along a straight line to form a strip structure 3, or two magnetic groups 1 are aligned and bitten to form a strip substructure 31, and at least one strip substructure 31 is extended along a straight line to form a strip structure 3.

[0107] Utilizing the reusable nature of the adhesive portion 20, magnetic groups 1 can be freely combined. Specifically, while ensuring that a 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. For example, multiple magnetic groups 1 can be connected end to end to form a large magnetic group 1; in another example, a large magnetic group 1 can be split into multiple smaller magnetic groups 1. The size of a magnetic group 1 is determined by the number of magnetic units 10 in the magnetic group 1.

[0108] In some embodiments, in response to the magnetic scale 100 being switched to the first state, any one of the magnetic groups 1 is curled along the circumferential direction to form a periodic structure 2. The periodic structure 2 includes one magnetic group 1.

[0109] 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 sizes of the magnetic groups 1 in the periodic structure 2 can be the same or different, depending on actual needs.

[0110] The more magnetic units 10 there are in the periodic structure 2, the smaller the angular spacing between the magnetic units 10 is, and the higher the measurement accuracy is. The fewer magnetic units 10 there are in the periodic structure 2, the larger the angular spacing between the magnetic units 10 is, which facilitates large angle measurement.

[0111] According to the measurement accuracy requirement or the measurement range requirement, multiple magnetic groups 1 can be freely combined and then curled along the circumferential direction to form a periodic structure 2 to achieve angular displacement measurement.

[0112] For example, each magnetic group 1 includes 12 magnetic units 10. 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 curled 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 along a straight line to form a strip structure 3.

[0113] In some embodiments, in response to the magnetic scale 100 switching to the second state, any one of the magnetic groups 1 is extended along a straight line to form a strip structure 3 .

[0114] 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 along a straight line to form a strip structure 3. That is, multiple magnetic groups 1 are connected end-to-end and extend along a straight line to form a strip structure 3. Compared to designs in which a strip structure 3 comprises a single magnetic group 1, designs in which a strip structure 3 comprises multiple magnetic groups 1 can expand the measurement range. The number of magnetic groups 1 is selected based on the required measurement range.

[0115] In some other embodiments, in response to the magnetic scale 100 switching to the second state, two magnetic groups 1 are aligned and engaged to form a strip substructure 31 , and at least one strip substructure 31 is extended along a straight line to form a strip structure 3 .

[0116] The strip-shaped substructures 31 are arranged to extend along a straight line.

[0117] Exemplarily, the strip structure 3 includes a plurality of strip substructures 31 , and the plurality of strip substructures 31 are connected end to end along a straight line.

[0118] Exemplarily, the strip structure 3 includes a strip substructure 31. In some embodiments, in the strip substructure 31, the two magnetic groups 1 have the same structure, and one magnetic group 1 is rotated 180 degrees and then aligned with the other magnetic group 1, and the magnetic parts 12 of two adjacent magnetic monomers with the same magnetic pole direction in different magnetic groups 1 are arranged close to each other.

[0119] One magnetic group 1 rotates 180 degrees and then engages with another magnetic group 1 . This can be understood as one magnetic group 1 rotates 180 degrees around a certain point or an axis and then engages with another magnetic group 1 .

[0120] For example, a magnetic group 1 rotates 180 degrees around a certain point and then aligns and engages with another magnetic group 1 .

[0121] The two magnetic groups 1 are aligned and engaged with each other, and the magnetic members 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.

[0122] When two magnetic groups 1 are aligned and engaged, the magnetic members 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 portion 32 in the measuring direction.

[0123] In response to the magnetic scale 100 being switched to the second state, the measuring direction is the extending direction of the magnetic group 1 .

[0124] In some embodiments, the two magnetic members 12 in the magnetic portion 32 are spaced apart and the spacing is relatively small to avoid misdetection. In other embodiments, the two magnetic members 12 in the magnetic portion 32 are spaced apart and the sides thereof are at least partially in contact with each other.

[0125] In some embodiments, in the strip-shaped substructure 31 , in a direction parallel to the magnetic unit 10 , an edge of the magnetic member 12 partially overlaps with an edge of the substrate 11 .

[0126] Exemplarily, the magnetic member 12 is arranged to partially overlap with one side edge of the substrate 11 and is spaced apart from the remaining side edges of the substrate 11 .

[0127] Exemplarily, the magnetic member 12 and the substrate 11 partially overlap on both sides thereof, and are spaced apart from the remaining sides.

[0128] In the strip substructure 31 , in a direction parallel to the magnetic monomer 10 , the edges of the magnetic members 12 are arranged to overlap with the edges of the substrate 11 , so that the magnetic members 12 are spaced apart to reduce magnetic interference.

[0129] In some embodiments, in the strip-shaped substructure 31 , the magnetic elements 12 are at least partially overlapped in the extension direction of the magnetic group 1 .

[0130] 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 extension 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, thereby avoiding mismeasurement during the measurement process.

[0131] In some embodiments, 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 is an isosceles triangle structure, with the bonding portion 20 located at the bottom edge of the substrate 11. In the periodic structure 2, the vertex 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 vertex of the substrate 11.

[0132] For example, in a direction perpendicular to the magnetic unit 10, the orthographic projection of the magnetic member 12 is similar to the orthographic projection of the substrate 11. A waist of the magnetic member 12 is partially overlapped with a waist of the substrate 11.

[0133] The waist length of the magnetic member 12 is less than or equal to half of the waist length of the substrate 11 , and the distance between the apex of the apex angle of the magnetic member 12 and the apex angle of the substrate 11 is greater than or equal to one quarter of the waist length of the substrate 11 .

[0134] 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 apex of the top corner of the magnetic element 12 and the apex of the top corner of the substrate 11 is equal to one-quarter the waist length of the substrate 11. In the strip structure 3, the magnetic elements 12 are completely overlapped in the extension direction of the magnetic group 1. The two magnetic elements 12 in the magnetic portion 32 are arranged in contact with each other.

[0135] In other embodiments, Figure 16 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 engage to form a strip-shaped substructure 31. The magnetic member 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 member 12 is arranged to overlap with one waist of the substrate 11.

[0136] Exemplarily, the magnetic member 12 has a symmetrical trapezoidal structure. In a single magnetic unit 10, the substrate 11 has a first waist, and the magnetic member 12 has a second waist. The first waist and the second waist are partially overlapped, so that one waist of the magnetic member 12 overlaps with one waist of the substrate 11. In the magnetic portion 32, the two magnetic members 12 are arranged in contact with each other.

[0137] The intersection of the second waist of the magnetic member 12 and the upper base of the magnetic member 12 is less than half the distance from the vertex of the top angle of the substrate 11 to the waist of the substrate 11, and the intersection of the second waist of the magnetic member 12 and the lower base of the magnetic member 12 is less than half the distance from the intersection of the bottom angle of the substrate 11 and the second waist to ensure that in the strip substructure 31, the two magnetic members 12 in the magnetic part 32 are at least partially overlapped in the extension direction of the magnetic group 1, so that the magnetic part 32 can serve as a magnetic pole of the magnetic group 1.

[0138] In some other embodiments, Figure 7 and Figure 17As 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 is an isosceles triangle structure, with the bonding portion 20 located at the base 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 spacing angle between the magnetic units 10 is greater than the angle of the apex angle of the substrate 11.

[0139] Illustratively, the bonding parts 20 are connected diagonally to each other.

[0140] Exemplarily, in the magnetic portion 32 , two magnetic members 12 are arranged in contact with each other, and in the strip-shaped substructure 31 , in the extension direction of the magnetic group 1 , the magnetic members 12 are arranged to partially overlap with each other.

[0141] For example, Figure 18 As shown, in the magnetic portion 32 , two magnetic members 12 are arranged at intervals, and in the strip-shaped substructure 31 , the magnetic members 12 are arranged to completely overlap in the extending direction of the magnetic group 1 .

[0142] See also Figure 3 、 Figure 4 and Figure 19 , Figure 19 It is a structural diagram of an embodiment of a magnetic scale system provided by this application.

[0143] The present 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 magnetic poles on the magnetic scale 100 and output displacement data.

[0144] 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 limited) once, records the magnetic field change once, that is, counts as 1, and accumulates the counts in sequence.

[0145] For example, the structure being measured drives the magnetic scale 100 to move, so that the linear displacement measurement and the angle measurement can share the counter 200, which can save consumables.

[0146] For example, in response to the magnetic scale 100 switching to the first state, macroscopically, each 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, which are arranged alternately along the circumference. The counter 200 rotates around the center of the periodic structure 2 relative to the magnetic scale 100, passing through the south magnetic pole S and north magnetic pole N in sequence, thereby detecting changes in magnetic field strength. For example, if the counter 200 passes four magnetic units 10 along the circumference, each exhibiting a south magnetic pole characteristic, a north magnetic pole characteristic, a south magnetic pole characteristic, and a north magnetic pole characteristic, the count is 3.

[0147] The magnetic units 10 in periodic structure 2 are arranged at equal angular intervals. The structure being measured drives the magnetic scale 100 to rotate in conjunction with it. A 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 structure being measured is α × n. α represents the angular spacing between the magnetic units 10 in periodic structure 2.

[0148] Exemplarily, 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 magnetic unit 10 can be understood as a magnetic pole on the magnetic scale 100. If the magnetic scale 100 includes a strip-shaped substructure 31, macroscopically, a magnetic portion 32 can be understood as a magnetic pole on the magnetic scale 100, and each magnetic unit 10 in the magnetic scale 100, excluding the magnetic portion 32, can also 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 alternating along a straight line. When the counter 200 linearly moves relative to the magnetic scale 100, it will sequentially pass through the south magnetic pole S and the north magnetic pole N, thereby detecting changes in magnetic field strength. For example, if the counter 200 sequentially passes through the south magnetic pole S, the north magnetic pole N, the south magnetic pole S, and the north magnetic pole N along a straight line, the count is 3.

[0149] In the strip structure 3 , the magnetic poles are arranged at equal intervals.

[0150] The measured structure drives the magnetic scale 100 to move linearly. Counter 200 records the number of magnetic field changes. The total number of magnetic field changes from the start to the end of the movement is recorded as n. The distance the measured structure moves is b × n. b represents the spacing between the magnetic poles in strip structure 3.

[0151] By providing the magnetic scale 100 as described above, the magnetic scale system 300 can measure both linear displacement and angular displacement, thereby achieving the commonality of the two measurement consumables.

[0152] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0153] The above is only an implementation method of the present application and does not limit the scope of patent protection of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of the present application.

Claims

1. A magnetic scale, characterized in that: include: The magnetic group has a sawtooth structure; the magnetic group includes an even number of magnetic monomers connected end to end; the magnetic poles of any two adjacent magnetic monomers are in opposite directions; In response to the magnetic scale being switched to the first state, the magnetic group curls along the circumferential direction to form a periodic structure for realizing angular displacement measurement; In response to the magnetic scale being switched to the second state, the magnetic group is extended along a straight line to form a strip structure for realizing linear displacement measurement.

2. The magnetic scale according to claim 1, characterized in that In the periodic structure, the magnetic monomers are evenly distributed along the circumferential direction; and the periodic structure is a centrally symmetrical structure.

3. The magnetic scale according to claim 1, wherein Each of the magnetic monomers comprises: The substrate is non-magnetic; a magnetic member covering a portion of the surface of the substrate, wherein a side of the magnetic member away from the substrate exhibits a single magnetic pole characteristic; The magnetic scale further includes an adhesive portion disposed on a side of the substrate; the adhesive portion is self-adhesive and reusable; In the magnetic group, adjacent magnetic units are connected by the bonding portion.

4. The magnetic scale according to claim 3, characterized in that In each of the magnetic groups, adjacent magnetic units are connected diagonally via the bonding portion.

5. The magnetic scale according to claim 3, characterized in that The magnetic scale includes a plurality of magnetic groups; In response to the magnetic scale being switched to the first state, any one of the magnetic groups curls circumferentially to form a periodic structure, or at least two of the magnetic groups are connected end to end and curled circumferentially to form the periodic structure; In response to the magnetic scale switching to the second state, any one of the magnetic groups is extended along a straight line to form a strip structure, or at least two of the magnetic groups are connected end to end and extended 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 extended along a straight line to form the strip structure.

6. The magnetic scale according to claim 5, characterized in that In the strip 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, and the magnetic parts of the two adjacent magnetic monomers with the same magnetic pole direction in different magnetic groups are arranged close to each other.

7. The magnetic scale according to claim 5, characterized in that In the strip-shaped substructure, in a direction parallel to the magnetic monomer, an edge of the magnetic member partially overlaps with an edge of the substrate.

8. The magnetic scale according to claim 5, characterized in that In the strip-shaped substructure, the magnetic members are at least partially overlapped in the extension direction of the magnetic group.

9. The magnetic scale according to claim 1, wherein: The sawtooth structure is a single-sided sawtooth structure or a double-sided sawtooth structure.

10. A magnetic scale system, characterized in that: include: A magnetic scale according to any one of claims 1 to 9; Counter, used to detect the change of magnetic poles on the magnetic scale and output displacement data.

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