Linear motor

Abstract

The utility model relates to the technical field of motors, and particularly discloses a linear motor which comprises a stator assembly and at least two rotor assemblies, the stator assembly comprises a bottom plate, at least three magnet yokes and a plurality of magnets, and the at least three magnet yokes are arranged on the bottom plate at intervals; a plurality of magnets are arranged on the sides, facing the inner sides, of the two magnet yokes on the outermost side in the at least three magnet yokes, a plurality of magnets are arranged on the two opposite sides of the magnet yoke on the inner side in the at least three magnet yokes, and the magnets on each magnet yoke are sequentially spliced in the preset direction. Each rotor assembly is arranged between the magnets on the two adjacent magnet yokes, and interacting magnetic fields are generated between the rotor assemblies and the magnets so as to drive the rotor assemblies to move in the preset direction. According to the linear motor, the moving effect of the multi-rotor assembly is achieved, the transverse size of the linear motor is effectively reduced, and the space utilization rate is improved.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a linear motor. Background Art

[0002] In a linear motor, interacting magnetic fields are generated between the stator and mover assemblies to move the latter. Currently, linear motors typically have a single mover assembly. However, with the advancement of linear motor technology, their applications are expanding, and the demand for linear motors with multiple movers is also increasing. Therefore, there is an urgent need for a linear motor with multiple movers. Utility Model Content

[0003] In view of the above, it is necessary to propose a linear motor to achieve the effect of moving multiple sub-assemblies.

[0004] An embodiment of the present application provides a linear motor, comprising:

[0005] A stator assembly includes a base plate, at least three magnetic yokes, and a plurality of magnets, wherein the at least three magnetic yokes are spaced apart on the base plate, the two outermost yokes of the at least three magnetic yokes are provided with a plurality of magnets on their inner sides, and the inner yokes of the at least three magnetic yokes are provided with a plurality of magnets on their opposite sides, and the plurality of magnets on each magnetic yoke are spliced ​​in sequence along a preset direction;

[0006] At least two mover assemblies, each of which is arranged between the plurality of magnets on two adjacent magnetic yokes, and an interacting magnetic field is generated between the mover assembly and the plurality of magnets to drive the mover assembly to move along the preset direction.

[0007] The above-mentioned linear motor fixes and supports the yoke by setting a stator assembly including a base plate. By setting at least three yokes, a mover assembly can be accommodated between each two adjacent yokes. The mover assembly is placed between a number of magnets on two adjacent yokes. The mover assembly and the several magnets generate an interacting magnetic field to drive the mover assembly to move along a preset direction, and each mover assembly can move independently without affecting each other, thereby achieving the effect of moving multiple mover assemblies. In addition, by setting a number of magnets on the opposite sides of the inner yoke of at least three yokes, two adjacent mover assemblies can share a yoke, effectively reducing the lateral size of the linear motor and improving space utilization. The linear motor can horizontally expand an unlimited number of yokes and mover assemblies, and can achieve the effect of using more mover assemblies side by side. The linear motor of the embodiment of the present application achieves the effects of small stroke, multiple movers, and small installation space.

[0008] In some embodiments, the stator assembly further includes two fixing members, the two fixing members are spaced apart and are respectively located on opposite sides of at least three magnetic yokes, and each fixing member is connected to one end of at least three magnetic yokes that faces away from the base plate.

[0009] The linear motor is provided with the fixing member, which can prevent the yoke from being deformed due to the attraction between the magnets, thereby ensuring the stable use of the stator assembly and the linear motor.

[0010] In some embodiments, each of the fixing members is provided with at least two slide grooves, and the at least two slide grooves are arranged in a one-to-one correspondence with at least two of the movable sub-assemblies, and each of the movable sub-assemblies can be movably arranged in the corresponding slide groove.

[0011] The linear motor has a sliding groove provided on the fixing member, and the movable subassembly is movably arranged in the corresponding sliding groove, thereby limiting the moving direction of the movable subassembly and ensuring the moving accuracy of the movable subassembly.

[0012] In some embodiments, a limiting portion is protruded from one side of each of the movable subassemblies, and the limiting portion is arranged at one end of the movable subassembly close to the base plate. The limiting portion is used to abut against the fixing member when the movable subassembly moves along the preset direction to limit the movable subassembly.

[0013] The above-mentioned linear motor has a protruding limiting portion on one side of the mover assembly. When the mover assembly moves along a preset direction between several magnets on two adjacent magnetic yokes, the limiting portion abuts against the fixing part to limit the mover assembly, thereby preventing the mover assembly from detaching from the stator assembly and ensuring the stable use of the linear motor.

[0014] In some embodiments, at least three pairs of clamping portions are protruding from a side of the bottom plate facing the magnetic yoke, and the three pairs of clamping portions correspond one-to-one to at least three magnetic yokes, and each pair of the clamping portions is used to clamp the opposite sides of the corresponding magnetic yoke.

[0015] The linear motor is provided with the clamping portion to achieve clamping and fixing of the yoke.

[0016] In some embodiments, each of the magnetic yokes is provided with a support portion on one side or both sides thereof for arranging the plurality of the magnets, the support portion being connected to the base plate and used to support the plurality of the magnets.

[0017] The above-mentioned linear motor is provided with the above-mentioned support part on the magnetic yoke, and a plurality of magnets are arranged in sequence along the preset direction against the support part. On the one hand, the support for the plurality of magnets is achieved, and on the other hand, the support part can be used as a reference for setting the plurality of magnets to ensure the setting accuracy of the magnets.

[0018] In some embodiments, each of the movable components includes a main body and at least one group of coil components, the main body is arranged between several of the magnets on two adjacent magnetic yokes, and at least one group of coil components is embedded in the main body along the preset direction, and an interactive magnetic field is generated between the coil component and the several magnets.

[0019] The linear motor, by setting the above-mentioned specific structure of the mover assembly, generates an interactive magnetic field between the coil assembly and a plurality of magnets, thereby driving the coil assembly and the body to move along a preset direction.

[0020] In some embodiments, each set of the coil assemblies includes a first coil, a second coil, and a third coil embedded in the body along the preset direction, and the first coil, the second coil, and the third coil are electrically connected to an external three-phase power supply respectively.

[0021] The linear motor, by providing the above-mentioned specific structure of the coil assembly, can generate an interactive magnetic field between the coil assembly and a plurality of magnets.

[0022] In some embodiments, the body is provided with at least one group of through holes, at least one group of the through holes is spaced apart along the preset direction and corresponds to at least one group of the coil assemblies one by one, and each group of the coil assemblies is arranged in a corresponding through hole.

[0023] The linear motor is provided with the through hole, so that the coil assembly is arranged in the through hole and embedded in the body.

[0024] In some embodiments, a guide groove extending along the preset direction is formed on one side of the body, and a plurality of magnet partial structures corresponding to one side of the body are adapted to be located in the guide groove.

[0025] The above-mentioned linear motor, by opening a guide groove on the main body, enables the main body to move along several magnets, thereby ensuring the movement accuracy of the main body. In addition, by opening the above-mentioned guide groove, the distance between several magnets and the coil assembly is reduced, and the magnetic field effect between several magnets and the coil assembly is enhanced, which is beneficial to improving the driving force and current conversion efficiency of the linear motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the linear motor provided in the first embodiment of the present application.

[0027] Figure 2 yes Figure 1 The structural diagram of the linear motor shown in another perspective.

[0028] Figure 3 yes Figure 1 Exploded diagram of the linear motor shown.

[0029] Figure 4 yes Figure 1 Exploded schematic diagram of the stator assembly of the linear motor shown.

[0030] Figure 5 yes Figure 1 Schematic diagram of the structure of the mover assembly of the linear motor shown.

[0031] Figure 6 This is a schematic structural diagram of the linear motor provided in the second embodiment of the present application.

[0032] Figure 7 This is a schematic structural diagram of the linear motor provided in the third embodiment of the present application.

[0033] Explanation of the main component symbols: linear motor 100, 200, 300, stator assembly 10, base plate 11, clamping part 111, yoke 12, support part 121, magnet 13, fixing part 14, slide groove 141, mover assembly 20, body 21, limiting part 211, through hole 212, first through hole 2121, second through hole 2122, third through hole 2123, wiring groove 213, guide groove 214, coil assembly 22, first coil 221, second coil 222, third coil 223, outer shell plate 30. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application.

[0035] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, it should be noted that the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the term "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection, an electrical connection, or mutual communication; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two elements or an interaction between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0038] See Figure 1 , the first embodiment of the present application provides a linear motor 100. The linear motor 100 includes a stator assembly 10 and at least two mover assemblies 20, wherein the linear motor 100 is a motor that can generate magnetic force through the magnetic effect of electric current, and drive the mover assembly 20 of the linear motor 100 to move linearly through the magnetic force. In this embodiment, the mover assembly 20 is supplied with electric current to generate an interactive magnetic field with the stator assembly 10, and then generates magnetic force through the magnetic field, so as to drive the mover assembly 20 of the linear motor 100 to move linearly through the magnetic force. For the sake of ease of understanding and explanation, the embodiments of the present application are defined as follows Figure 1 The XYZ coordinate system shown.

[0039] Please refer to Figure 2 、 Figure 3 and Figure 4 The stator assembly 10 includes a base plate 11, at least three magnetic yokes 12 and a plurality of magnets 13. The at least three magnetic yokes 12 are spaced apart on the base plate 11. In this embodiment, the at least three magnetic yokes 12 are spaced apart along the X-axis. The two outermost magnetic yokes 12 of the at least three magnetic yokes 12 are provided with a plurality of magnets 13 on the inner side facing the inner side. The inner magnetic yokes 12 of the at least three magnetic yokes 12 are provided with a plurality of magnets 13 on the opposite sides. The plurality of magnets 13 on each magnetic yoke 12 are spliced ​​in sequence along a preset direction. In this embodiment, the preset direction can be the Z-axis direction, that is, the plurality of magnets 13 on each magnetic yoke 12 are spliced ​​in sequence along the Z-axis.

[0040] In at least two mover assemblies 20 , each mover assembly 20 is disposed between a plurality of magnets 13 on two adjacent magnetic yokes 12 , and an interacting magnetic field is generated between the mover assembly 20 and the plurality of magnets 13 to drive the mover assembly 20 to move along a preset direction.

[0041] In this embodiment, the stator assembly 10 includes three yokes 12 and two mover assemblies 20. The number of magnets 13 disposed on one or both sides of the yokes 12 is five. The magnets 13 are glued to the yokes 12. Of the three yokes 12, the center yoke 12 has five magnets 13 disposed on both opposing sides. The two yokes 12 on either side have five magnets 13 disposed on their inwardly facing sides. The two mover assemblies 20 share the center yoke 12. It is understood that in other embodiments, the number of yokes 12 can be greater, such as four, five, or six, and accordingly, the number of mover assemblies 20 can be greater, such as three, four, or five. That is, the stator assembly 10 can expand the number of yokes 12 and mover assemblies 20 laterally along the X-axis. The number of magnets 13 disposed on one or both sides of the yoke 12 can be greater, such as ten, fifteen, or twenty, and the specific number can be adjusted based on the height adaptability of the mover assembly 20 along the Z-axis. This is not specifically limited in this embodiment of the present application.

[0042] In this way, by setting the stator assembly 10 including the base plate 11, the yoke 12 is fixed and supported, thereby ensuring the stability of the stator assembly 10; by setting three yokes 12, a mover assembly 20 can be accommodated between each two adjacent yokes 12, and the mover assembly 20 is placed between the five magnets 13 on the two adjacent yokes 12. Current is passed through the mover assembly 20 to generate an interactive magnetic field with the magnets 13 to drive the mover assembly 20 to move in a preset direction, and the two mover assemblies 20 can move independently without affecting each other, thereby achieving the effect of moving the double mover assembly 20; in addition, By arranging five magnets 13 on both sides of the opposite sides of the middle yoke 12 among the three yokes 12, two mover assemblies 20 can share one yoke 12. When designing a linear motor 100 with multiple mover assemblies 20, the number of yokes 12 can be reduced, the lateral size of the linear motor 100 can be effectively reduced, and the space utilization rate can be improved. The linear motor 100 can also expand an unlimited number of yokes 12 and mover assemblies 20 laterally along the X-axis, thereby achieving the effect of using multiple movers side by side. The linear motor 100 of the embodiment of the present application achieves the effects of small stroke, multiple movers, and small installation space.

[0043] In this embodiment, three pairs of clamping portions 111 are protruding from the side of the base plate 11 facing the yoke 12. Each pair of clamping portions 111 has two opposing clamping portions 111. The three pairs of clamping portions 111 correspond one to one with the three yokes 12. Each clamping portion 111 is used to clamp the opposing sides of the corresponding yoke 12. The base plate 11 and the yoke 12 can be fixedly connected by screws. The magnets 13 provided on the yoke 12 are located above the corresponding clamping portions 111, and the magnets 13 and the clamping portions 111 are spaced apart along the Z-axis. The shapes of the clamping portions 111 may not be identical. In this embodiment, the width of the two outermost clamping portions 111 along the X-axis is greater than the width of the four inner clamping portions 111 along the X-axis. It is understood that in other embodiments, the shapes of the clamping portions 111 may be identical. In this way, by providing the clamping portions 111, the yoke 12 is clamped and fixed, ensuring the accuracy of the placement of the yoke 12. It is understandable that in other embodiments, more pairs of clamping portions 111 may be protruded from the bottom plate 11 , and the number of clamping portions 111 may be adaptively arranged according to the number of the magnetic yokes 12 .

[0044] In this embodiment, each yoke 12 is used to set a plurality of magnets 13 and is provided with a support portion 121 on one side or both sides, that is, the support portion 121 protrudes from the yoke 12 along the Z axis. Among the three yokes 12, the two outermost yokes 12 are provided with a support portion 121 on the inner side, and the middle yoke 12 is provided with a support portion 121 on both sides. The support portion 121 is connected to the base plate 11, and the support portion 121 is located between a pair of clamping portions 111. The support portion 121 is used to support a plurality of magnets 13. In this way, by providing the above-mentioned support portion 121 on the yoke 12, a plurality of magnets 13 are spliced ​​and arranged in sequence along a preset direction against the support portion 121. On the one hand, support for the plurality of magnets 13 is achieved. On the other hand, the support portion 121 can be used as a reference for setting the plurality of magnets 13 to ensure the setting accuracy of the magnets 13 and to ensure that multiple rows of magnets 13 are at the same height, thereby ensuring the setting accuracy of the stator assembly 10. On the third hand, the bottom area of ​​the yoke 12 is increased, so that the yoke 12 can be more stably connected to the base plate 11, thereby improving the structural stability of the stator assembly 10.

[0045] To prevent deformation of the yoke 12 caused by mutual attraction between the magnets 13, in this embodiment, the stator assembly 10 further includes a fixing member 14. There are two fixing members 14, spaced apart and located on opposite sides of the three yokes 12. That is, the two fixing members 14 are located on opposite sides of the three yokes 12 along the Y-axis. Each fixing member 14 extends along the X-axis and is connected to one end of the three yokes 12 facing away from the base plate 11, that is, the fixing member 14 is connected to the upper end of the yoke 12. Thus, by providing the aforementioned fixing members 14, the upper end of the yoke 12 is fixed by the fixing members 14, which prevents deformation of the yoke 12 caused by mutual attraction between the magnets 13, thereby ensuring stable operation of the stator assembly 10 and the linear motor 100. It is understood that when the stator assembly 10 includes more yokes 12, the length of the fixing member 14 along the X-axis can be extended according to the number of yokes 12.

[0046] In order to ensure the movement accuracy of the movable subassembly 20, in this embodiment, each fixing member 14 is provided with two slide grooves 141. The two slide grooves 141 are arranged in a one-to-one correspondence with the two movable subassemblies 20. Each movable subassembly 20 extends along the Y-axis and can be movably arranged in the corresponding slide groove 141. In this way, by providing the slide grooves 141 on the fixing member 14, the movable subassembly 20 can be movably arranged in the corresponding slide groove 141, thereby limiting the movement direction of the movable subassembly 20 and ensuring the movement accuracy of the movable subassembly 20. It can be understood that in other embodiments, when the number of movable subassemblies 20 is greater, a corresponding number of slide grooves 141 can be provided on the fixing member 14 according to the number of movable subassemblies 20. This embodiment of the present application does not specifically limit this.

[0047] To limit the position of the mover assembly 20, see Figure 5 In this embodiment, a limiting portion 211 is provided on one side of each movable assembly 20, that is, each movable assembly 20 is provided with a limiting portion 211 along the Y-axis, and the limiting portion 211 protrudes at least to the bottom of the fixing member 14. The limiting portion 211 is provided at one end of the movable assembly 20 close to the base plate 11, that is, the limiting portion 211 is provided at the lower end of the movable assembly 20. The limiting portion 211 is used to abut against the fixing member 14 when the movable assembly 20 moves in a preset direction, so that the fixing member 14 limits the position of the movable assembly 20. In this way, by providing the limiting portion 211 on one side of the movable assembly 20, when the movable assembly 20 moves between two adjacent magnetic yokes 12 in the preset direction, the limiting portion 211 abuts against the fixing member 14 to limit the position of the movable assembly 20, thereby preventing the movable assembly 20 from being separated from the stator assembly 10 and ensuring the stable use of the linear motor 100.

[0048] In this embodiment, each mover assembly 20 includes a body 21 and at least one set of coil assemblies 22. The body 21 is positioned between the magnets 13 on two adjacent yokes 12 and within the slots 141 of the two fixing members 14. The body 21 has a retaining portion 211. At least one set of coil assemblies 22 is embedded within the body 21 along a predetermined direction. The coil assemblies 22 are configured to pass current to generate an interactive magnetic field with the magnets 13. In this embodiment, each mover assembly 20 includes a set of coil assemblies 22. Thus, by configuring the above-described specific structure of the mover assembly 20, an interactive magnetic field is generated between the coil assemblies 22 and the magnets 13, thereby driving the coil assemblies 22 and the body 21 to move in a predetermined direction. It is understood that in other embodiments, depending on the pole slot design of the mover assembly 20 and the actual application, each mover assembly 20 may include two or more sets of coil assemblies 22. The specific setting can be determined based on actual conditions.

[0049] In this embodiment, each coil assembly 22 includes a first coil 221, a second coil 222, and a third coil 223 embedded in the body 21 along a predetermined direction. The first coil 221, the second coil 222, and the third coil 223 are arranged sequentially from bottom to top. The first coil 221, the second coil 222, and the third coil 223 are electrically connected to an external three-phase power supply, respectively. That is, the first coil 221, the second coil 222, and the third coil 223 can be U / V / W coils. In this way, by setting the above-mentioned specific structure of the coil assembly 22, an interactive magnetic field can be generated between the coil assembly 22 and the plurality of magnets 13. It can be understood that when the movable subassembly 20 includes more coil assemblies 22, the first coil 221, the second coil 222, and the third coil 223 of each coil assembly 22 are arranged sequentially from bottom to top.

[0050] In this embodiment, a group of through holes 212 is formed on the body 21. Each group of through holes 212 corresponds to a group of coil assemblies 22, and each group of coil assemblies 22 is disposed in a corresponding through hole 212. Specifically, each group of through holes 212 includes a first through hole 2121, a second through hole 2122, and a third through hole 2123, arranged sequentially from bottom to top. The first coil 221 is embedded in the first through hole 2121, the second coil 222 is embedded in the second through hole 2122, and the third coil 223 is embedded in the third through hole 2123. After the first coil 221 is embedded in the first through hole 2121, the second coil 222 is embedded in the second through hole 2122, and the third coil 223 is embedded in the third through hole 2123, the body 21 and the coil assembly 22 are potted and encapsulated. This ensures that the body 21 and the coil assembly 22 are fixedly and sealed together, thereby protecting the coil assembly 22. Thus, by providing the aforementioned through-holes 212, the coil assemblies 22 are disposed within the through-holes 212 and thus embedded within the body 21. Furthermore, there is no obstruction between the two sides of the coil assemblies 22 and the corresponding magnets 13, thereby ensuring that the magnetic field interaction between the stator assembly 10 and the mover assembly 20 is not affected. It is understood that in other embodiments, when there are more groups of coil assemblies 22, there are also more groups of through-holes 212, and more groups of coil assemblies 22 are provided in a one-to-one correspondence with more groups of through-holes 212.

[0051] In this embodiment, a guide slot 214 extending in a preset direction is provided on one side of the body 21 along the X-axis. Portions of the magnets 13 corresponding to the side of the body 21 fit within the guide slot 214. Thus, by providing the guide slot 214 on the body 21, the body 21 can move along the magnets 13, ensuring the accuracy of movement of the body 21. Specifically, the magnets 13 serve as guides relative to the body 21. Furthermore, by providing the guide slot 214, the distance between the magnets 13 and the coil assembly 22 can be reduced, enhancing the magnetic field interaction between the magnets 13 and the coil, which in turn improves the driving force and current conversion efficiency of the linear motor 100.

[0052] In this embodiment, a wiring groove 213 is provided on one side of the main body 21 along the X-axis. The wiring groove 213 is located on one side of the guide groove 214 and extends into the limiting portion 211. The wiring groove 213 is used for wiring to enable the coil assembly 22 to be electrically connected to the external three-phase power supply, wherein the cables arranged in the wiring groove 213 pass through the limiting portion 211 to be electrically connected to the external three-phase power supply.

[0053] In this embodiment, the linear motor 100 further includes two housing plates 30, spaced apart along the X-axis. The two housing plates 30 are respectively connected to opposite sides of the base plate 11 of the stator assembly 10. Each housing plate 30 extends along the Z-axis and is spaced apart from the two outermost magnetic yokes 12. Thus, by providing the housing plates 30 on both sides of the stator assembly 10, the stator assembly 10 is protected, thereby improving the protection performance of the linear motor 100. The housing plates 30 can also be integrally formed with the base plate 11.

[0054] See Figure 6 The second embodiment of the present application provides a linear motor 200. The structure of the linear motor 200 provided in this embodiment is roughly similar to that of the linear motor 100 provided in the first embodiment. The difference is that in this embodiment, the stator assembly 10 includes four yokes 12, and the number of mover assemblies 20 is three. Accordingly, four pairs of clamping portions 111 are protruding from the base plate 11, and the fixing member 14 is connected to the four yokes 12. The fixing member 14 has three sliding grooves 141. Among the four yokes 12, the two inner yokes 12 are respectively provided with a plurality of magnets 13 on opposite sides. In this way, the linear motor 200 of this embodiment achieves the effect of using three mover assemblies 20 side by side.

[0055] See Figure 7 The third embodiment of the present application provides a linear motor 300. The structure of the linear motor 300 provided in this embodiment is roughly similar to that of the linear motor 100 provided in the first embodiment. The difference is that in this embodiment, the stator assembly 10 includes five yokes 12, and the number of mover assemblies 20 is four. Accordingly, five pairs of clamping portions 111 are protruding from the base plate 11, and the fixing member 14 is connected to the five yokes 12. The fixing member 14 has four sliding grooves 141. Among the five yokes 12, the three inner yokes 12 are respectively provided with a plurality of magnets 13 on opposite sides. In this way, the linear motor 300 of this embodiment achieves the effect of using four mover assemblies 20 side by side.

[0056] It is understandable that in other embodiments, the number of the yoke 12 and the mover assembly 20 can be greater, which can be set according to actual usage requirements, and the embodiments of the present application do not specifically limit this.

[0057] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims rather than the foregoing description, and all variations that come within the meaning and range of equivalents of the claims are intended to be embraced herein.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A linear motor, characterized in that: include: A stator assembly includes a base plate, at least three magnetic yokes, and a plurality of magnets, wherein the at least three magnetic yokes are spaced apart on the base plate, the two outermost yokes of the at least three magnetic yokes are provided with a plurality of magnets on their inner sides, and the inner yokes of the at least three magnetic yokes are provided with a plurality of magnets on their opposite sides, and the plurality of magnets on each magnetic yoke are spliced ​​in sequence along a preset direction; At least two mover assemblies, each of which is arranged between the plurality of magnets on two adjacent magnetic yokes, and an interacting magnetic field is generated between the mover assembly and the plurality of magnets to drive the mover assembly to move along the preset direction.

2. The linear motor according to claim 1, wherein The stator assembly also includes two fixing parts, which are arranged at intervals and respectively located on opposite sides of at least three magnetic yokes, and each fixing part is connected to one end of at least three magnetic yokes away from the base plate.

3. The linear motor according to claim 2, wherein: Each of the fixing members is provided with at least two slide grooves, and the at least two slide grooves are arranged in a one-to-one correspondence with at least two movable sub-assemblies, and each movable sub-assembly can be movably arranged in the corresponding slide groove.

4. The linear motor according to claim 2, wherein: A limiting portion is protruded from one side of each of the movable subassemblies, and the limiting portion is arranged at one end of the movable subassembly close to the base plate. The limiting portion is used to abut against the fixing member when the movable subassembly moves along the preset direction to limit the movable subassembly.

5. The linear motor according to claim 1, wherein: At least three pairs of clamping parts are protruded from one side of the bottom plate facing the magnetic yoke, and the three pairs of clamping parts correspond to at least three magnetic yokes one by one, and each pair of the clamping parts is used to clamp two opposite sides of the corresponding magnetic yoke.

6. The linear motor according to claim 1, wherein: Each of the magnetic yokes is used to set a plurality of the magnets and is provided with a supporting portion on one side or both sides thereof. The supporting portion is connected to the bottom plate and is used to support the plurality of the magnets.

7. The linear motor according to claim 1, wherein: Each of the movable components includes a body and at least one group of coil components. The body is arranged between several of the magnets on two adjacent magnetic yokes. At least one group of coil components is embedded in the body along the preset direction. The coil components and the several magnets generate an interactive magnetic field.

8. The linear motor according to claim 7, wherein: Each set of the coil assemblies includes a first coil, a second coil, and a third coil embedded in the body along the preset direction. The first coil, the second coil, and the third coil are electrically connected to an external three-phase power supply respectively.

9. The linear motor according to claim 7, wherein: The body is provided with at least one group of through holes, and the at least one group of through holes is spaced apart along the preset direction and corresponds to at least one group of coil assemblies in a one-to-one manner, and each group of coil assemblies is arranged in a corresponding through hole.

10. The linear motor according to claim 7, wherein: A guide groove extending along the preset direction is formed on one side of the body, and a plurality of magnet partial structures corresponding to one side of the body are adapted to be located in the guide groove.

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