Magnetic shoe fixing structure and brushless motor

Abstract

The utility model belongs to the technical field of motors, and particularly relates to a magnetic shoe fixing structure and a brushless motor. By arranging the first fixing ring, the second fixing ring and the multiple isolation plates in the magnetic shoe fixing structure, the whole magnetic shoe fixing structure is firmer and not prone to deformation, meanwhile, the first inserting opening and the second inserting opening which are opposite in direction are formed, the magnetic shoe fixing structure is vertically inserted through the first inserting opening and the second inserting opening in the demolding process, and the demolding efficiency is improved. And meanwhile, the magnetic shoe fixing structure is provided with the first inserting opening and the second inserting opening, so that the magnetic shoe fixing structure can be automatically installed.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and particularly relates to a magnetic tile fixing structure and a brushless motor. Background Art

[0002] Magnetic tiles are magnetic ceramic products, usually used in electrical equipment such as electronic devices, motors, generators, and transformers. The main function of magnetic tiles is to provide a magnetic field so that electrical equipment can work properly. They are usually made of ferrite materials, which have a high magnetic permeability and can effectively concentrate and guide the magnetic field.

[0003] In the existing technology, magnetic tiles are usually fixed inside the motor, and the magnetic tiles are fixed in the motor through a specific frame. However, the structures of many magnetic tile fixing frames are unstable, usually only having a single-sided structure. This makes the entire magnetic tile frame deformed or displaced during installation or motor use, resulting in internal displacement of the magnetic tiles. At the same time, the unstable structure also makes the mold design difficult, the demolding of the fixing frame difficult, and the magnetic tile fixing frame prone to damage, and it is not easy to install automatically during production. Summary of the Utility Model

[0004] To solve the above problems, the utility model proposes a magnetic tile fixing structure and a brushless motor. Through the setting of the magnetic tile frame of the motor, with the first fixing ring and the second fixing ring as a bilateral structure for fixing, the overall frame is made more stable. At the same time, the replacement magnetic tile frame is provided with a first insertion interface and a second insertion interface, and by the way that the two insertion interfaces face in opposite directions, when the replacement magnetic tile frame is demolded, it can be clamped and demolded by the upper and lower claw machines. At the same time, because the first insertion interface and the second insertion interface face in opposite directions respectively, the demolding claw machines can be misaligned for clamping, which is convenient for production and can also be automatically clamped and installed through the two insertion interfaces during installation.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] In a first aspect, the utility model proposes a magnetic tile fixing structure, characterized in that the magnetic tile fixing structure is arranged inside the motor housing to fix the magnetic tiles. The magnetic tile fixing structure includes a first fixing ring, a second fixing ring, and a partition plate. The first fixing ring and the second fixing ring are parallel to each other, and the partition plate is arranged between the first fixing ring and the second fixing ring, and the partition plate adjacent to it isolates a magnetic tile slot for fixing the magnetic tiles;

[0007] Wherein, a first insertion interface and a second insertion interface are arranged at both ends of the magnetic tile slot, and the first insertion interface and the second insertion interface are arranged in a staggered manner.

[0008] The magnetic tile fixing structure is provided with a first fixing ring and a second fixing ring, and is connected at both ends of the middle through a plurality of partition plates, so that the overall magnetic tile fixing structure becomes stable and firm, not easily deformed, and at the same time, the partition plates are provided with magnetic tile grooves for fixing the magnetic tiles, so as to fixedly install the magnetic tiles. By providing a first insertion interface and a second insertion interface, during demolding, the upper and lower clamping demolding can be carried out through the misaligned first insertion interface and second insertion interface, and at the same time, during installation, further automatic installation can be carried out through the first insertion interface and the second insertion interface.

[0009] In some embodiments, the partition plate includes a first side surface and a second side surface, the width of the first side surface is smaller than the width of the second side surface, the first side surface faces the inside of the magnetic tile fixing structure, and the second side surface faces the outside of the magnetic tile fixing structure.

[0010] By providing a partition plate, the partition plate is provided with a first side surface and a second side surface, respectively facing the outside of the magnetic tile fixing structure, and since the first side surface faces the inside of the magnetic tile fixing structure, the width of the first side surface is smaller than the width of the second side surface.

[0011] In some embodiments, the inner side surface of the first fixing ring is connected to the first side surface, the outer side surface of the second fixing ring is connected to the second side surface, and the first fixing ring and the second fixing ring are respectively arranged at both ends of the partition plate.

[0012] By connecting the first fixing ring to the first side surface and the second fixing ring to the second side surface, and arranging the first fixing ring and the second fixing ring at both ends of the partition plate respectively, the plurality of partition plates are firmly fixed up and down through the first fixing ring and the second fixing ring. At the same time, the two fixing rings are fixed on different side surfaces, which can create a misaligned space, so that the first fixing ring and the second fixing ring can limit the upper and lower jigs respectively when the mold clamps, making the lower position more accurate when the mold clamps. At the same time, the magnetic tiles fixed in the magnetic tile grooves can also be fixed and limited through the two fixing rings.

[0013] In some embodiments, the outer side surface of the first fixing ring and the partition plate form a first insertion interface, and the inner side surface of the second fixing ring and the partition plate form a second insertion interface.

[0014] By forming the first insertion interface and the second insertion interface, during installation, automatic clamping can be carried out through the first insertion interface. At the same time, during demolding, the first insertion interface and the second insertion interface respectively form an insertion space for the upper and lower molds with the magnetic tile groove, so that the upper and lower mold claws can insert the magnetic tile fixing structure through the insertion space, thereby realizing rapid demolding.

[0015] In some embodiments, the thickness of the magnetic tile is less than or equal to the sum of the thicknesses of the first fixing ring and the second fixing ring.

[0016] The optimal thickness design of the magnetic tile is such that the sum of the widths of the first fixing ring and the second fixing ring is the same, or less than the sum of the widths of the first fixing ring and the second fixing ring, so that the magnetic tile does not protrude from the entire magnetic tile fixing structure.

[0017] In some embodiments, the width of the magnetic tile is equal to the width of the magnetic tile groove.

[0018] In a preferred solution, the width of the magnetic tile is equal to the width of the magnetic tile groove, or has an interference fit with the magnetic tile groove, so that the magnetic tile is snap-fitted into the magnetic tile groove.

[0019] Optionally, the width of the magnetic tile can be less than the width of the magnetic tile groove. In this case, the magnetic tile needs to be placed after the magnetic tile fixing structure is installed in the housing to prevent the magnetic tile from falling off.

[0020] In some embodiments, the sum of the thicknesses of the first fixing ring and the second fixing ring is equal to the thickness of the isolation plate.

[0021] In this way, the thickness of the isolation plate is defined. Since the isolation plate isolates the magnetic tile groove, the thickness of the isolation plate determines the thickness of the magnetic tile groove. When the magnetic tile is fixed inside the magnetic tile groove, the magnetic tile is fixed up and down by the first fixing ring and the second fixing ring. At the same time, when the mold is demolded, the upper and lower mold claws can respectively pass through the first insertion interface and the second insertion interface, and abut against the first fixing ring and the second fixing ring through the magnetic tile groove, and at the same time, it also prevents the structural dimension problem caused by the protrusion due to the oversize of the isolation plate.

[0022] In some embodiments, the length of the isolation plate is equal to the sum of the length of the magnetic tile groove, the height of the first fixing ring, and the height of the second fixing ring.

[0023] In addition to isolating the magnetic tile groove, the function of the isolation plate is to fix the entire structure, and form a space such as the magnetic tile groove, the height of the first fixing ring, and the height of the second fixing ring through the isolation plate. The first insertion interface and the second insertion interface are connected to both sides of the magnetic tile groove, so the length of the isolation plate is the magnetic tile groove, the height of the first fixing ring, and the height of the second fixing ring.

[0024] In some embodiments, the housing further includes a top cover. A first limiting position is provided inside the housing, and a second limiting position is provided on the top cover; by abutting the first fixing ring against the first limiting position, and the second limiting position is provided above the second fixing ring, so that the magnetic tile fixing structure is arranged between the housing and the top cover.

[0025] When the housing fixes the ring-shaped magnetic tile structure, one end of the magnetic tile fixing structure is restricted by the internal first clamping limiting position, and the other end is covered by the second limiting position after the top cover is closed, so that the magnetic tile fixing structure is limited between the housing and the top cover and further restricted within the housing.

[0026] In a second aspect, the present utility model provides a brushless motor. Any of the magnetic tile fixing structures of the first aspect further includes a stator assembly and a rotor assembly. The stator assembly and the rotor assembly are disposed between a top cover and a housing. The rotor assembly includes a shaft core, and the shaft core is connected to the housing. The magnetic tile fixing structure is disposed around the stator assembly and the rotor assembly, and is bonded to the housing and rotates with the housing.

[0027] The magnetic tiles in the magnetic tile fixing structure are part of the rotor and rotate by connecting with other rotor components. Therefore, while the magnetic tile fixing structure is disposed inside the housing, in order to rotate with the housing, it also needs to be bonded to the housing.

[0028] The beneficial effects achieved by the magnetic tile fixing structure and the brushless motor of the present utility model are as follows:

[0029] By providing a structure with a first fixing ring, a second fixing ring, and a plurality of partition plates in the magnetic tile fixing structure, the entire magnetic tile fixing structure becomes more firm and not easily deformed. At the same time, a first insertion interface and a second insertion interface in opposite directions are provided, so that the magnetic tile fixing structure can be inserted up and down through the first insertion interface and the second insertion interface during demolding, making it easier to perform rapid demolding, improving the production efficiency of the magnetic tile fixing structure. At the same time, the presence of the first insertion interface and the second insertion interface also enables the magnetic tile fixing structure to be automatically installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a perspective view of the magnetic tile fixing structure and the magnetic tiles of the present utility model;

[0031] Figure 2 is a perspective view of the magnetic tile fixing structure of the present utility model;

[0032] Figure 3 is a top view of the magnetic tile fixing structure of the present utility model;

[0033] Figure 4 is a cross-sectional view of the brushless motor of the present utility model.

[0034] REFERENCE NUMERALS:

[0035] 100, housing; 110, top cover; 120, first limiting position; 130, second limiting position;

[0036] 200, magnetic tiles;

[0037] 300, magnetic tile fixing structure; 310, first fixing ring; 320, second fixing ring; 330, partition plate; 331, first side; 332, second side; 340, magnetic tile groove; 350, first insertion interface; 360, second insertion interface;

[0038] 400, stator assembly;

[0039] 500. Rotor assembly. Detailed implementation manners

[0040] It should be noted that, without conflict, the embodiments and technical features in the embodiments of the present utility model can be combined with each other. The detailed description in the specific implementation manners should be understood as an explanatory illustration of the gist of the present utility model, and should not be regarded as an improper limitation to the present utility model.

[0041] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will further describe the specific technical solutions of the present utility model in detail with reference to the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0042] In the embodiments of the present utility model, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0043] In addition, in the embodiments of the present utility model, the orientation terms such as "upper", "lower", "left" and "right" are defined relative to the orientation of the components shown in the drawings. It should be understood that these directional terms are relative concepts, and they are used for relative description and clarification, and they can change accordingly with the change of the orientation of the components placed in the drawings.

[0044] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium.

[0045] In the embodiments of the present utility model, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the element.

[0046] In the embodiments of the present utility model, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present utility model should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, the use of words such as "exemplary" or "for example" is intended to present the relevant in a specific manner.

[0047] Embodiment 1:

[0048] As Figure 1 shown, this embodiment proposes a magnetic tile fixing structure. In some embodiments, it includes:

[0049] The magnetic tile fixing structure 300 is arranged inside the motor housing to fix the magnetic tile 200. The magnetic tile fixing structure 300 includes a first fixing ring 310, a second fixing ring 320, and a partition plate 330. The first fixing ring 310 and the second fixing ring 320 are parallel to each other. The partition plate 330 is arranged between the first fixing ring 310 and the second fixing ring 320, and the adjacent partition plate 330 isolates a magnetic tile groove 340 for fixing the magnetic tile 200;

[0050] Wherein, a first insertion interface 350 and a second insertion interface 360 are arranged at both ends of the magnetic tile groove 340, and the first insertion interface 350 and the second insertion interface 360 are arranged in a staggered manner.

[0051] Specifically, one magnetic tile fixing structure 300 is set, and the magnetic tile 200 is fixed inside the housing through the magnetic tile fixing structure 300. In the form of arranging the first fixing ring 310, the second fixing ring 320, and the partition plate 330 on the magnetic tile fixing structure 300, the partition plate 330 is bilaterally fixed, so that the whole magnetic tile fixing structure 300 is more stable. At the same time, a first insertion interface 350 and a second insertion interface 360 are provided, and the first insertion interface 350 and the second insertion interface 360 are arranged in a staggered and reverse manner to cooperate with the upper and lower demolding machines for rapid demolding. When demolding, the two insertion interfaces can be combined through the first insertion interface 350 and the magnetic tile groove 340, and the second insertion interface 360 and the magnetic tile groove 340 to provide a space for the mold claw to be clamped, so as to be clamped by the upper and lower jigs during demolding and further perform rapid demolding.

[0052] Furthermore, since the magnetic tile fixing structure 300 is a magnetic tile fixing structure 300, the inner side surface of the magnetic tile groove 340 is smaller than the outer side surface, and the inner mounting surface of the magnetic tile 200 is also smaller than the outer mounting surface of the magnetic tile 200.

[0053] The magnetic tile fixing structure 300 is provided with a first fixing ring 310 and a second fixing ring 320, and is connected at both middle ends through a plurality of partition plates 330, so that the whole magnetic tile fixing structure 300 becomes stable and firm, not easily deformed, and at the same time, the partition plate 330 sets out a magnetic tile groove 340 for fixing the magnetic tile 200, so as to fix and install the magnetic tile 200. By setting the first insertion interface 350 and the second insertion interface 360, during demolding, the upper and lower clamping demolding can be carried out through the staggered first insertion interface 350 and the second insertion interface 360, and at the same time, further automatic installation can be carried out through the first insertion interface 350 and the second insertion interface 360 during installation.

[0054] Example 2:

[0055] As Figures 2 to 3 shown, based on Example 1, this example further illustrates and optimizes the structure in Example 1.

[0056] In some embodiments, the isolation plate 330 includes a first side 331 and a second side 332. The width of the first side 331 is smaller than that of the second side 332. The first side 331 faces the inside of the magnetic tile fixing structure 300, and the second side 332 faces the outside of the magnetic tile fixing structure 300.

[0057] Specifically, the isolation plate 330 is provided with a first side 331 and a second side 332, and the width of the first side 331 is smaller than that of the second side 332, so that when the isolation plate 330 is set, the first side 331 faces the inside of the magnetic tile fixing structure 300, and the second side 332 faces the outside of the magnetic tile fixing structure 300. Further, in order to make the isolation plate 330 fit the structure of the annular magnetic tile 200 better, the first side 331 and the second side 332 are designed with arc surfaces, so that the first side 331 and the second side 332 fit the magnetic tile fixing structure 300 better. The beneficial effect of this structure is that by providing the isolation plate 330, the isolation plate 330 is provided with a first side 331 and a second side 332, which face the outside of the magnetic tile fixing structure 300 respectively, and since the first side 331 faces the inside of the magnetic tile fixing structure 300, the width of the first side 331 is smaller than that of the second side 332.

[0058] In some embodiments, the inner side surface of the first fixing ring 310 is connected to the first side 331, the outer side surface of the second fixing ring 320 is connected to the second side 332, and the first fixing ring 310 and the second fixing ring 320 are respectively arranged at both ends of the isolation plate 330.

[0059] Specifically, the first fixing ring 310 is connected to the first side 331, and the outer side surface of the second fixing ring 320 is connected to the second side 332, so that the two fixing rings are misaligned in a top view, and the radius of the first fixing ring 310 is lower than that of the second fixing ring 320. When the two fixing rings are misaligned, at the same time, the first insertion port 350 and the second insertion port 360 are arranged in the opposite direction, so that when the upper and lower demolding jigs clamp, they can be clamped by misalignment, and then the magnetic tile groove 340 can be divided and utilized, so that the upper and lower can be clamped simultaneously, which is convenient for demolding. The beneficial effect of this method is

[0060] It is connected to the first side surface 331 through the first fixing ring 310, and the second fixing ring 320 is connected to the second side surface 332, and the first fixing ring 310 and the second fixing ring are respectively arranged at both ends of the partition plate 330, so that the plurality of partition plates 330 are stably fixed up and down through the first fixing ring 310 and the second fixing ring. At the same time, the two fixing rings are fixed on different side surfaces, which can create a misaligned space, so that the first fixing ring 310 and the second fixing ring can limit the upper and lower jigs respectively when the mold is clamped, making the lower position more accurate when the mold is clamped. At the same time, the two fixing rings can also fix and limit the magnetic tile 200 fixed in the magnetic tile groove 340.

[0061] In some embodiments, a first insertion interface 350 is formed between the outer side surface of the first fixing ring 310 and the partition plate 330, and a second insertion interface 360 is formed between the inner side surface of the second fixing ring 320 and the partition plate 330.

[0062] Specifically, the first insertion interface 350 is the insertion interface that the outer side surface of the first fixing ring 310 can form with the partition plate 330, with the second fixing ring 320 as the bottom, and combining the space of the magnetic tile groove 340 where the vertical projection of the first insertion interface 350 is on the second fixing ring 320 to form a first insertion slot in the first direction, so that the mold claw can extend into this insertion space for insertion; similarly, the inner side surface of the second fixing ring 320 and the partition plate 330 form a second insertion interface 360, with the first fixing ring 310 as the bottom, and combining the space of the magnetic tile groove 340 where the vertical projection of the second insertion interface 360 is on the first fixing ring 310 to form a second insertion slot in the second direction. The first direction and the second direction are opposite, and are up and down in practice, so that the mold claws in two different directions can extend into the two insertion slots for insertion. The effect of this method is that by forming the first insertion interface 350 and the second insertion interface 360, during installation, automatic clamping can be achieved through the first insertion interface 350. At the same time, during demolding, the first insertion interface 350 and the second insertion interface 360 respectively form the insertion spaces of the upper and lower molds with the magnetic tile groove 340, so that the upper and lower mold claws can insert and fix the magnetic tile fixing structure 300 through the insertion spaces, thereby realizing rapid demolding.

[0063] In some embodiments, the thickness of the magnetic tile 200 is less than or equal to the sum of the thickness of the first fixing ring 310 and the thickness of the second fixing ring 320.

[0064] Specifically, the sum of the widths of the first fixing ring 310 and the second fixing ring 320 is less than or equal to the thickness of the magnetic tile 200, so as to prevent the entire magnetic tile 200 from protruding out of the entire ring-shaped magnetic ring frame and affecting the operation inside the motor. Further, if the thickness of the magnetic tile 200 is less than the sum of the widths of the first fixing ring 310 and the second fixing ring 320, the magnetic tile 200 is preferably arranged in the middle of the magnetic tile groove 340. The optimal design of the thickness of the magnetic tile 200 is the same as the sum of the widths of the first fixing ring 310 and the second fixing ring 320, or less than the sum of the widths of the first fixing ring 310 and the second fixing ring 320, so that the magnetic tile 200 does not protrude out of the entire magnetic tile fixing structure 300.

[0065] In some embodiments, the width of the magnetic tile 200 is equal to the width of the magnetic tile groove 340.

[0066] Specifically, the width of the magnetic tile 200 is equal to the width of the magnetic tile groove 340, so that the magnetic tile 200 is clamped in the magnetic tile groove 340. In order to further prevent the magnetic tile 200 from protruding out of the magnetic tile fixing structure 300, the magnetic tile 200 is also arranged in an arc shape. In a preferred solution, the width of the magnetic tile 200 is equal to the width of the magnetic tile groove 340, or has an interference fit with the magnetic tile groove 340, so that the magnetic tile 200 is clamped in the magnetic tile groove 340. Optionally, the width of the magnetic tile 200 can be less than the width of the magnetic tile groove 340. In this case, the magnetic tile 200 needs to be placed after the magnetic tile fixing structure 300 is installed in the housing to prevent the magnetic tile 200 from falling off. When the width of the magnetic tile 200 is less than the width of the magnetic tile groove 340, the magnetic tile 200 is provided with a clamping structure so that the magnetic tile 200 is clamped in the magnetic tile groove 340.

[0067] In some embodiments, the sum of the thicknesses of the first fixing ring 310 and the second fixing ring 320 is equal to the thickness of the partition plate 330.

[0068] Specifically, the sum of the thicknesses of the first fixing ring 310 and the second fixing ring 320 is the same as that of the partition plate 330. The thicknesses of the second fixing ring 320 and the first fixing ring 310 can be set to be the same or different, but the overall sum is always kept the same as the thickness of the magnetic tile groove 340. In this way, the thickness of the partition plate 330 is defined. Since the partition plate 330 isolates the magnetic tile groove 340, the thickness of the partition plate 330 determines the thickness of the magnetic tile groove 340. When the magnetic tile 200 is fixed inside the magnetic tile groove 340, the magnetic tile 200 is fixed up and down by the first fixing ring 310 and the second fixing ring 320. At the same time, when the mold is demolded, the upper and lower mold claws can respectively pass through the first insertion opening 350 and the second insertion opening 360, and respectively abut against the first fixing ring 310 and the second fixing ring 320 through the magnetic tile groove 340, and at the same time, it also prevents the structural size problem caused by the protrusion of the partition plate 330 being too large.

[0069] The sum of the thickness of the first fixing ring 310 and the thickness of the second fixing ring 320 is set to be the same as the thickness of the magnetic tile groove 340, so that the motor can design the corresponding dimensions of the stator such as the coil according to the space formed by the inner diameter of the magnetic tile fixing structure 300, and there will be no situation where the internal structure of the motor hinders each other due to the protrusion of the magnetic tile groove 340, that is, the protrusion of the partition plate 330.

[0070] In some embodiments, the length of the partition plate 330 is equal to the sum of the length of the magnetic tile groove 340, the height of the first fixing ring 310, and the height of the second fixing ring 320.

[0071] Specifically, the length of the partition plate 330 is set to be equal to the sum of the length of the magnetic tile groove 340, the height of the first fixing ring 310, and the height of the second fixing ring 320, which prevents the problem of structural size mismatch caused by the overlong partition plate 330 protruding up and down, and also makes the whole structure tend to be cylindrical, so as to better match other parts of the motor.

[0072] In addition to isolating the magnetic tile groove 340, the function of the partition plate 330 also includes fixing the whole structure, and forms a space such as the height of the magnetic tile groove 340, the first fixing ring 310, and the second fixing ring 320 through the partition plate 330. The first insertion interface 350 and the second insertion interface 360 are connected to both sides of the magnetic tile groove 340, so the length of the partition plate 330 is the height of the magnetic tile groove 340, the first fixing ring 310, and the second fixing ring 320.

[0073] In some embodiments, the housing further includes a top cover 110, a first limiting position 120 is arranged inside the housing, and a second limiting position 130 is arranged on the top cover 110; by abutting the first fixing ring 310 against the first limiting position 120, and the second limiting position 130 is arranged above the second fixing ring 320, so that the magnetic tile fixing structure 300 is arranged between the housing and the top cover 110.

[0074] Specifically, the housing further includes a top cover 110. By arranging an annular first limiting position 120 inside the housing and an annular second limiting position 130 inside the top cover 110 to match the first fixing ring 310 and the second fixing ring 320, and after installation, the first fixing ring 310 can abut against the first limiting position 120, so that the whole magnetic tile fixing structure 300 is arranged inside the housing. The beneficial effect of this method is that when fixing the annular magnetic tile 200 structure on the housing, one end of the magnetic tile fixing structure 300 is restricted by the internal first clamping limiting position, and after the top cover 110 is covered, the other end of the magnetic tile fixing structure 300 is covered by the second limiting position 130, so that the magnetic tile fixing structure 300 is limited between the housing and the top cover 110 and further restricted inside the housing.

[0075] Embodiment 3:

[0076] As Figure 4 shown, based on Embodiment 1 and Embodiment 2, this embodiment proposes a brushless motor. Any one of the magnetic tile fixing structures 300 in the first aspect further includes a stator assembly 400 and a rotor assembly 500. The stator assembly 400 and the rotor assembly 500 are arranged between the top cover 110 and the outer shell, and the magnetic tile fixing structure 300 is disposed around the outside of the stator assembly 400 and the rotor assembly 500.

[0077] Specifically, the stator assembly 400 includes a coil assembly. The coil assembly is cylindrical and has a radius smaller than the inner diameter of the magnetic tile fixing structure 300. By setting the direction of the coil assembly, the rotor assembly 500 can rotate. The rotor assembly 500 includes a shaft core disposed between the coil assemblies. The coil assemblies are provided with external power lines to energize the coils. The magnetic tiles 200 in the magnetic tile fixing structure 300 are part of the rotor and rotate by connecting with other rotor assemblies 500. Therefore, while the magnetic tile fixing structure 300 is disposed inside the outer shell, in order to rotate with the outer shell, it also needs to be bonded to the outer shell. During bonding, it can be bonded to the outer shell through the second side surface 332 of the partition plate 330 of the magnetic tile fixing structure 300, or bonded to the first limiting position 120 through the first fixing ring 310, so that when the magnetic tile fixing structure 300 rotates, it rotates with the rotor assembly 500.

[0078] The serial numbers of the utility model embodiments are only for description and do not represent the advantages or disadvantages of the embodiments. The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent device or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A magnetic tile fixing structure, characterized in that: The magnetic tile fixing structure (300) is arranged in the motor housing to fix the magnetic tile (200), and the magnetic tile fixing structure (300) comprises a first fixing ring (310), a second fixing ring (320), and an isolation plate (330), wherein the first fixing ring (310) and the second fixing ring (320) are parallel to each other, and the isolation plate (330) is arranged between the first fixing ring (310) and the second fixing ring (320), and the magnetic tile groove (340) for fixing the magnetic tile (200) is isolated from the isolation plate (330); Wherein, a first plug interface (350) and a second plug interface (360) are arranged at both ends of the magnetic tile groove (340), and the first plug interface (350) and the second plug interface (360) are arranged in a staggered manner with respect to each other.

2. The magnetic tile fixing structure according to claim 1, characterized in that: The isolation plate (330) includes a first side surface (331) and a second side surface (332), wherein the width of the first side surface (331) is smaller than the width of the second side surface (332), the first side surface (331) faces the inside of the magnetic tile fixing structure (300), and the second side surface (332) faces the outside of the magnetic tile fixing structure (300).

3. The magnetic tile fixing structure according to claim 2, characterized in that: The inner side surface of the first fixing ring (310) is connected to the first side surface (331), the outer side surface of the second fixing ring (320) is connected to the second side surface (332), and the first fixing ring (310) and the second fixing ring (320) are respectively arranged at two ends of the isolation plate (330).

4. The magnetic tile fixing structure according to claim 3, characterized in that: The outer side surface of the first fixing ring (310) and the isolation plate (330) form the first plug-in interface (350), and the inner side surface of the second fixing ring (320) and the isolation plate (330) form the second plug-in interface (360).

5. The magnetic tile fixing structure according to claim 3, characterized in that: The thickness of the magnetic tile (200) is less than or equal to the sum of the thickness of the first fixing ring (310) and the thickness of the second fixing ring (320).

6. The magnetic tile fixing structure according to claim 3, characterized in that: The width of the magnetic tile (200) is equal to the width of the magnetic tile groove (340).

7. The magnetic tile fixing structure according to claim 3, characterized in that: The sum of the thickness of the first fixing ring (310) and the thickness of the second fixing ring (320) is equal to the thickness of the isolation plate (330).

8. The magnetic tile fixing structure according to claim 3, characterized in that: The length of the isolation plate (330) is equal to the sum of the length of the magnetic tile groove (340), the height of the first fixing ring (310) and the height of the second fixing ring (320).

9. The magnetic tile fixing structure according to claim 3, characterized in that: The invention also includes an outer shell (100) and a top cover (110), wherein a first limiting position (120) is arranged inside the outer shell (100), and a second limiting position (130) is arranged on the top cover (110); by abutting the first fixing ring (310) against the first limiting position (120), the second limiting position (130) is arranged above the second fixing ring (320), so that the magnetic tile fixing structure (300) is arranged between the outer shell (100) and the top cover (110).

10. A brushless motor, characterized in that: It comprises the magnetic tile fixing structure (300), a stator assembly (400) and a rotor assembly (500) as described in any one of claims 1 to 9, wherein the stator assembly (400) and the rotor assembly (500) are arranged between the outer casing (100), and the rotor assembly (500) comprises an axial core, which is connected to the outer casing (100), and the magnetic tile fixing structure (300) is arranged outside the stator assembly (400) and the rotor assembly (500), and is bonded to the outer casing (100) and rotates with the outer casing (100).

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