Stator structure and linear motor

Abstract

The utility model provides a stator structure and a linear motor, the stator structure comprises a first stator and a second stator, the first stator comprises a first magnetic plate and a plurality of first magnetic steels arranged on the first magnetic plate, the second stator comprises a second magnetic plate and a plurality of second magnetic steels arranged on the second magnetic plate, the first magnetic plate and the second magnetic plate are fixedly connected in the width direction of the stator structure. In the scheme, the stator structure is arranged to be a split structure, that is, a whole magnetic plate in an existing stator structure is arranged to comprise a first magnetic plate and a second magnetic plate which are split, each magnetic plate is provided with magnetic steel, and the first magnetic plate and the second magnetic plate are fixedly connected. Compared with a whole magnetic plate, the first magnetic plate and the second magnetic plate which are split are small in size in the width direction of the stator structure, the machining difficulty is reduced, the planeness is easy to guarantee after machining, heat treatment and assembly, and therefore the planeness of the stator structure is easy to guarantee, and the performance of the linear motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of linear motors, and in particular to a stator structure and a linear motor. Background Art

[0002] As the application scenarios of linear motors become more and more extensive, the required motor thrust range is also wider. For motors with larger thrust, the corresponding stator size is also larger. Due to the inherent characteristics of linear motors being disconnected at both ends, it has a significant impact on the motor's positioning force and thrust fluctuation. To reduce the positioning force and thrust fluctuation of linear motors, the measures usually taken are to add auxiliary teeth or adopt a skewed pole solution for the motor stator. To reduce motor costs and facilitate motor serialization, the linear motor rotor uses an iron core without auxiliary teeth, and its stator adopts a skewed pole method to facilitate the serial production of linear motors.

[0003] Currently, high-thrust linear motor stators utilize a monolithic, multi-segmented stator structure. This means the magnetic plate of a single stator structure is a single piece, with multiple stator structures spliced lengthwise. Due to the large width of a monolithic magnetic plate, deformation during machining and heat treatment is difficult to control, hindering flatness. This in turn affects the unevenness of the air gap between the motor's rotor and stator, impacting electrode performance and increasing thrust fluctuations. Utility Model Content

[0004] The utility model provides a stator structure and a linear motor, so as to solve the problem in the prior art that the flatness of the stator structure of the linear motor is difficult to ensure.

[0005] In order to solve the above problems, according to one aspect of the present invention, the present invention provides a stator structure, which has a length direction and a width direction perpendicular to each other, and the length direction is the movement direction of the movable structure cooperating with the stator structure. The stator structure includes: a first stator and a second stator, the first stator includes a first magnetic plate and a plurality of first magnets arranged on the first magnetic plate, and the second stator includes a second magnetic plate and a plurality of second magnets arranged on the second magnetic plate, wherein the first magnetic plate and the second magnetic plate are fixedly connected in the width direction of the stator structure.

[0006] Furthermore, the first magnetic plate includes a first plate body and a first boss provided on one side of the first plate body, and the second magnetic plate includes a second plate body and a second boss provided on one side of the second plate body, and the first boss and the second boss are overlapped and fixedly connected.

[0007] Furthermore, the thickness of the first plate body is equal to the thickness of the second plate body, and the sum of the thickness of the first boss and the second boss is no greater than the thickness of the first plate body.

[0008] Furthermore, the first boss and the second boss both extend along the length direction of the stator structure. The stator structure further includes a plurality of fasteners distributed along the length direction of the first boss. The plurality of fasteners connect the first boss and the second boss.

[0009] Furthermore, the fastener is a bolt, the first boss is located above the second boss, the first boss has a countersunk hole, the second boss has a threaded hole, and the fastener passes through the countersunk hole and is screwed into the threaded hole.

[0010] Alternatively, the first magnetic plate includes a first plate body and a slide rail arranged on one side of the first plate body, the second magnetic plate includes a second plate body and a slide groove arranged on one side of the second plate body, and the slide rail penetrates into the slide groove and is fixedly connected.

[0011] Furthermore, the first magnetic plate has a first inclined surface and a first right-angled surface arranged in sequence at an end portion along the length direction of the stator structure, wherein the first inclined surface is inclined relative to the width direction of the stator structure, the first right-angled surface is parallel to the width direction of the stator structure, and the length direction of the first magnetic steel is parallel to the first inclined surface;

[0012] The second magnetic plate has a second inclined surface and a second right-angled surface arranged in sequence at an end portion along the length direction of the stator structure, wherein the second inclined surface is inclined relative to the width direction of the stator structure, the second right-angled surface is parallel to the width direction of the stator structure, and the length direction of the second magnetic steel is parallel to the second inclined surface;

[0013] The first inclined surface and the second inclined surface have opposite inclination directions, and the first inclined surface and the second inclined surface are located between the first right-angled surface and the second right-angled surface.

[0014] Furthermore, a plurality of the first magnetic steels are spaced apart on the first magnetic plate along the length direction of the stator structure, and a plurality of the second magnetic steels are spaced apart on the second magnetic plate along the length direction of the stator structure, and the spacing between two adjacent first magnetic steels is equal to the spacing between two adjacent second magnetic steels.

[0015] Furthermore, the first magnetic steel and the second magnetic steel have the same structure and size, the first stator also includes a first cover plate, the first cover plate covers the multiple first magnetic steels on the first magnetic plate, and the second stator also includes a second cover plate, the second cover plate covers the multiple second magnetic steels on the second magnetic plate.

[0016] According to another aspect of the present invention, a linear motor is provided, comprising a mover structure and the above-mentioned stator structure, wherein the mover structure and the stator structure cooperate with each other.

[0017] The technical solution of the present invention is applied to provide a stator structure, which has a length direction and a width direction that are perpendicular to each other. The length direction is the moving direction of the movable structure that cooperates with the stator structure. The stator structure includes: a first stator and a second stator, the first stator includes a first magnetic plate and a plurality of first magnetic steels arranged on the first magnetic plate, and the second stator includes a second magnetic plate and a plurality of second magnetic steels arranged on the second magnetic plate, wherein the first magnetic plate and the second magnetic plate are fixedly connected in the width direction of the stator structure. In this solution, the stator structure is set as a split structure, that is, a whole magnetic plate in the existing stator structure is set to include a split first magnetic plate and a second magnetic plate, each magnetic plate is respectively provided with a magnetic steel, and the first magnetic plate and the second magnetic plate are fixedly connected. Compared with a whole magnetic plate, the split first magnetic plate and the second magnetic plate are smaller in the width direction of the stator structure, which reduces the processing difficulty and is easy to ensure flatness after machining, heat treatment and assembly, thereby easily ensuring the flatness of the stator structure and improving the performance of the linear motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of a stator structure provided by an embodiment of the present utility model is shown;

[0020] Figure 2 Shown Figure 1 Schematic diagram of the assembly of the first stator and the second stator;

[0021] Figure 3 Shown Figure 2 A schematic diagram of a first magnetic plate in a first stator;

[0022] Figure 4 A schematic diagram of a motor provided by an embodiment of the present utility model is shown.

[0023] The above drawings include the following reference numerals:

[0024] 10. First stator;

[0025] 11. First magnetic plate; 111. First plate body; 112. First boss; 113. Countersunk hole; 114. First inclined surface; 115. First right-angle surface;

[0026] 12. The first magnetic steel;

[0027] 13. First cover plate;

[0028] 20. Second stator;

[0029] 21. Second magnetic plate; 211. Second plate body; 212. Second boss; 213. Threaded hole;

[0030] 22. Second magnetic steel;

[0031] 23. Second cover plate;

[0032] 30. Movable structure. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way serves as any limitation on the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] like Figures 1 to 4 As shown, an embodiment of the present invention provides a stator structure, which has a length direction and a width direction that are perpendicular to each other. The length direction is the moving direction of the movable structure 30 that cooperates with the stator structure. The stator structure includes: a first stator 10 and a second stator 20. The first stator 10 includes a first magnetic plate 11 and a plurality of first magnets 12 arranged on the first magnetic plate 11. The second stator 20 includes a second magnetic plate 21 and a plurality of second magnets 22 arranged on the second magnetic plate 21. The first magnetic plate 11 and the second magnetic plate 21 are fixedly connected in the width direction of the stator structure.

[0035] In this solution, the stator structure is configured as a split structure. Specifically, the existing stator structure comprises a single magnetic plate, which includes a first magnetic plate 11 and a second magnetic plate 21. Magnets are provided on each magnetic plate, and the first magnetic plate 11 and the second magnetic plate 21 are fixedly connected. Compared to a single magnetic plate, the split first magnetic plate 11 and the second magnetic plate 21 are smaller in the width direction of the stator structure, which reduces the processing difficulty and makes it easier to maintain flatness after machining, heat treatment, and assembly. This makes it easier to maintain the flatness of the stator structure and improve the performance of the linear motor.

[0036] In a linear motor, the stator structure can be provided in multiple pieces, which are spliced in the length direction, and each stator structure is processed and assembled in sections. This avoids the first magnetic plate 11 and the second magnetic plate 21 being too large in the length direction of the stator structure, which makes it difficult to ensure flatness.

[0037] Furthermore, the stator structure is modular, allowing for flexible configuration based on the thrust and travel requirements of the linear motor. The number of stators along the width of the stator structure can be adjusted, as can the number of stators overall, to create linear motors of varying specifications. This improves versatility and reduces production costs.

[0038] like Figure 2 As shown, the first magnetic plate 11 includes a first plate body 111 and a first boss 112 arranged on one side of the first plate body 111, and the second magnetic plate 21 includes a second plate body 211 and a second boss 212 arranged on one side of the second plate body 211. The first boss 112 and the second boss 212 are overlapped and fixedly connected.

[0039] In this embodiment, the thickness of the first plate 111 is equal to the thickness of the second plate 211 to ensure the overall flatness of the upper surfaces of the first and second plates 111, 211. The sum of the thicknesses of the first and second bosses 112, 212 is no greater than the thickness of the first plate 111 to prevent the first and second bosses 112, 212 from protruding from the upper surface of the first plate 111 after connection.

[0040] Specifically, the first boss 112 and the second boss 212 both extend along the length of the stator structure. The stator structure further includes a plurality of fasteners, which are distributed along the length of the first boss 112 and connect the first boss 112 to the second boss 212. The plurality of fasteners ensures a reliable connection between the first boss 112 and the second boss 212.

[0041] Specifically, the fastener is a bolt, the first boss 112 is located above the second boss 212, the first boss 112 has a countersunk hole 113, the second boss 212 has a threaded hole 213, and the fastener passes through the countersunk hole 113 and is screwed into the threaded hole 213. Through the above method, the structure is simple, the connection is reliable, and it is easy to assemble and disassemble.

[0042] In an embodiment not shown, the first magnetic plate 11 includes a first plate body 111 and a slide rail disposed on one side of the first plate body 111. The second magnetic plate 21 includes a second plate body 211 and a slide groove disposed on one side of the second plate body 211. The slide rail is inserted into the slide groove and fixedly connected. The slide rail is inserted into the slide groove, positioned securely, and then fixedly connected using fasteners.

[0043] like Figure 1 and Figure 3As shown, the first magnetic plate 11 has a first inclined surface 114 and a first right-angle surface 115 arranged in sequence at the end along the length direction of the stator structure, wherein the first inclined surface 114 is inclined relative to the width direction of the stator structure, the first right-angle surface 115 is parallel to the width direction of the stator structure, and the length direction of the first magnetic steel 12 is parallel to the first inclined surface 114; the second magnetic plate 21 has a second inclined surface and a second right-angle surface arranged in sequence at the end along the length direction of the stator structure, wherein the second inclined surface is inclined relative to the width direction of the stator structure, the second right-angle surface is parallel to the width direction of the stator structure, and the length direction of the second magnetic steel 22 is parallel to the second inclined surface; wherein the inclination directions of the first inclined surface 114 and the second inclined surface are opposite, and the first inclined surface 114 and the second inclined surface are located between the first right-angle surface 115 and the second right-angle surface.

[0044] The provision of the first inclined surface 114 and the second inclined surface provides a positioning reference for the arrangement of the first magnetic steel 12 and the second magnetic steel 22, facilitating accurate placement of the first magnetic steel 12 and the second magnetic steel 22. The first right-angled surface 115 and the second right-angled surface in one stator structure are configured to mate with and connect with corresponding first right-angled surfaces 115 and second right-angled surfaces in another stator structure, facilitating the positioning and connection of different stator structures.

[0045] In this embodiment, multiple first magnets 12 are spaced apart on the first magnetic plate 11 along the length of the stator structure, and multiple second magnets 22 are spaced apart on the second magnetic plate 21 along the length of the stator structure. The spacing between two adjacent first magnets 12 is equal to the spacing between two adjacent second magnets 22. This ensures the consistency of the pole pitches of adjacent magnets, effectively reducing the cogging force and thrust fluctuations of the linear motor.

[0046] Furthermore, the first magnetic steels 12 and the second magnetic steels 22 have the same structure and size. The first stator 10 further includes a first cover plate 13, which covers the plurality of first magnetic steels 12 on the first magnetic plate 11. The second stator 20 further includes a second cover plate 23, which covers the plurality of second magnetic steels 22 on the second magnetic plate 21. The first cover plate 13 and the second cover plate 23 can protect the first magnetic steels 12 and the second magnetic steels 22.

[0047] like Figure 4As shown, the utility model also provides a linear motor, which includes a mover structure 30 and the above-mentioned stator structure, and the mover structure 30 cooperates with the stator structure. In this solution, the stator structure is set as a split structure, that is, a whole magnetic plate in the existing stator structure is set to include a split first magnetic plate 11 and a second magnetic plate 21, and magnetic steel is respectively set on each magnetic plate, and the first magnetic plate 11 and the second magnetic plate 21 are fixedly connected. Compared with a whole magnetic plate, the split first magnetic plate 11 and the second magnetic plate 21 are smaller in the width direction of the stator structure, which reduces the processing difficulty and is easy to ensure flatness after machining, heat treatment and assembly, thereby easily ensuring the flatness of the stator structure and improving the performance of the linear motor.

[0048] The stator pole pitch of a linear motor significantly affects thrust fluctuations. Large deviations in the stator pole pitch during stator magnet affixing can lead to significant fluctuations in the motor's positioning force, impacting motor accuracy. High-thrust motor stators are typically larger, making it difficult to maintain consistent pole pitch when affixing the magnets. To address this issue, this solution utilizes a single-piece, split-and-spliced stator structure. This reduces the stator width, facilitates stator magnet affixing, and ensures consistent pole pitch.

[0049] The flatness of a linear motor's stator structure significantly affects the motor's mounting clearance. For high-thrust stators, the larger size of the stator results in poor stator flatness, which poses a risk to motor reliability during operation and significantly impacts thrust fluctuation. Reducing the stator width effectively reduces the stator size, minimizing deformation of the stator magnetic plate after high-temperature heating, further increasing stator flatness, ensuring uniformity in the air gap between the linear motor's rotor and stator, and reducing thrust fluctuation.

[0050] In addition, by splitting the single stator of the linear motor, the high-temperature deformation generated when the stator of the large thrust motor is baked and cured after the magnetic steel is glued is effectively reduced. When the width of the single stator is reduced, the accuracy of the stator magnetic plate processing can be guaranteed, the flatness of the stator can be guaranteed, and the consistency of the pole pitch when the magnetic steel is glued can be guaranteed simultaneously, which can effectively reduce the motor positioning force and thrust fluctuation.

[0051] The embodiment of the present solution provides a linear motor secondary, also called a linear motor stator, and a single stator includes a first stator and a second stator. For linear motors with larger thrust, the size of the primary (i.e., the mover) is generally larger, and the corresponding secondary will also be larger in size, resulting in poor secondary dimensional accuracy. In addition, except for the universal magnetic steel, the other components of each motor secondary are not universal, and the secondary interchangeability is low. In view of the above series of problems, the present solution divides the large-sized linear motor secondary into blocks and modularizes them, which improves the versatility of motor components and facilitates serial design and production. It improves the dimensional accuracy of the linear motor secondary, reduces the positioning force of the linear motor, and reduces the thrust fluctuation of the linear motor.

[0052] In one specific embodiment, interchangeability of linear motor secondary components is achieved by designing a high-thrust linear motor primary with a two-module secondary consisting of a first stator and a second stator, as described above, joined and fixed together to form the corresponding high-thrust linear motor secondary. If the required motor thrust is reduced to half, the linear motor secondary can be formed from the first stator. In this case, the linear motor primary only needs to be halved in width to create a new linear motor, eliminating the need for redesigning the secondary. This improves the interchangeability of the linear motor secondary.

[0053] The reason why this solution divides the secondary of the linear motor into blocks and modularizes it also takes into account two other factors. On the one hand, the main factor is that for linear motors with larger thrust, due to the larger size of the motor secondary, the corresponding magnetic plate size will be larger, and in order to consider the customer's installation size and reduce costs, the thickness of the magnetic plate that makes up the secondary cannot be too thick. At this time, if the size of the magnetic plate is too large, it will be difficult to achieve the precision requirements during machining. In addition, during the production of the linear motor secondary, the magnetic steel is glued to the surface of the magnetic plate with glue and then cured by high-temperature baking. During this process, the magnetic plate will produce a certain deformation due to the high-temperature baking. For the secondary of a large-thrust linear motor, due to the larger size of the secondary magnetic plate, its deformation will be greater, and the final linear motor secondary will have a larger accuracy deviation. When the secondary flatness deviation is large, it will affect the mechanical clearance of the motor air gap surface, and the motor electromagnetic clearance deviation is large, which will have a greater impact on the thrust fluctuation and positioning force of the motor, resulting in reduced motor operation accuracy.

[0054] On the other hand, when the motor secondary is larger, it becomes more difficult to ensure consistent pole pitch between the north and south poles during the magnet affixing process. Poor secondary pole pitch consistency in the linear motor affects the motor's positioning force, reducing its operating accuracy. To address these issues, this solution incorporates a modular design of the motor secondary to reduce the stator's width, improve the motor's secondary dimensional accuracy, lower the linear motor's positioning force, and minimize thrust fluctuations.

[0055] The above description is merely an optional embodiment of the present invention and is not intended to limit the present invention. Persons skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

[0056] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0057] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of this solution. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary, rather than limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0058] In the description of this scheme, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this scheme and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this scheme; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0059] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0060] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this solution.

Claims

1. A stator structure, wherein the stator structure has a length direction and a width direction that are perpendicular to each other, wherein the length direction is the moving direction of a mover structure (30) that cooperates with the stator structure, and wherein: The stator structure comprises: A first stator (10) and a second stator (20), wherein the first stator (10) comprises a first magnetic plate (11) and a plurality of first magnetic steels (12) arranged on the first magnetic plate (11), and the second stator (20) comprises a second magnetic plate (21) and a plurality of second magnetic steels (22) arranged on the second magnetic plate (21), wherein the first magnetic plate (11) and the second magnetic plate (21) are fixedly connected in a width direction of the stator structure.

2. The stator structure according to claim 1, characterized in that The first magnetic plate (11) includes a first plate body (111) and a first boss (112) arranged on one side of the first plate body (111); the second magnetic plate (21) includes a second plate body (211) and a second boss (212) arranged on one side of the second plate body (211); the first boss (112) and the second boss (212) are overlapped and fixedly connected.

3. The stator structure according to claim 2, characterized in that: The thickness of the first plate body (111) is equal to the thickness of the second plate body (211), and the sum of the thicknesses of the first boss (112) and the second boss (212) is not greater than the thickness of the first plate body (111).

4. The stator structure according to claim 2, characterized in that: The first boss (112) and the second boss (212) both extend along the length direction of the stator structure. The stator structure further comprises a plurality of fasteners, which are distributed along the length direction of the first boss (112) and connect the first boss (112) and the second boss (212).

5. The stator structure according to claim 4, characterized in that The fastener is a bolt, the first boss (112) is located above the second boss (212), the first boss (112) has a countersunk hole (113), the second boss (212) has a threaded hole (213), and the fastener passes through the countersunk hole (113) and is screwed into the threaded hole (213).

6. The stator structure according to claim 1, characterized in that The first magnetic plate (11) comprises a first plate body (111) and a slide rail arranged on one side of the first plate body (111); the second magnetic plate (21) comprises a second plate body (211) and a slide groove arranged on one side of the second plate body (211); the slide rail penetrates into the slide groove and is fixedly connected.

7. The stator structure according to claim 1, characterized in that The first magnetic plate (11) has a first inclined surface (114) and a first right-angle surface (115) arranged in sequence at an end portion along the length direction of the stator structure, wherein the first inclined surface (114) is inclined relative to the width direction of the stator structure, the first right-angle surface (115) is parallel to the width direction of the stator structure, and the length direction of the first magnetic steel (12) is parallel to the first inclined surface (114); The second magnetic plate (21) has a second inclined surface and a second right-angled surface arranged in sequence at an end portion along the length direction of the stator structure, wherein the second inclined surface is inclined relative to the width direction of the stator structure, the second right-angled surface is parallel to the width direction of the stator structure, and the length direction of the second magnetic steel (22) is parallel to the second inclined surface; The first inclined surface (114) and the second inclined surface have opposite inclination directions, and the first inclined surface (114) and the second inclined surface are located between the first right-angled surface (115) and the second right-angled surface.

8. The stator structure according to claim 1, characterized in that A plurality of the first magnetic steels (12) are distributed at intervals on the first magnetic plate (11) along the length direction of the stator structure, and a plurality of the second magnetic steels (22) are distributed at intervals on the second magnetic plate (21) along the length direction of the stator structure, and the spacing between two adjacent first magnetic steels (12) is equal to the spacing between two adjacent second magnetic steels (22).

9. The stator structure according to claim 1, characterized in that The first magnetic steel (12) and the second magnetic steel (22) have the same structure and size. The first stator (10) further includes a first cover plate (13), and the first cover plate (13) covers the plurality of the first magnetic steels (12) on the first magnetic plate (11). The second stator (20) further includes a second cover plate (23), and the second cover plate (23) covers the plurality of the second magnetic steels (22) on the second magnetic plate (21).

10. A linear motor, characterized in that: The linear motor comprises a mover structure (30) and a stator structure according to any one of claims 1 to 9, wherein the mover structure (30) and the stator structure cooperate with each other.

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