Surface-mounted permanent magnet motor magnetic steel positioning device

Abstract

The utility model provides a surface-mounted permanent magnet motor magnetic steel positioning device, which belongs to the technical field of motor manufacturing, and comprises a first positioning piece and a second positioning piece, the first positioning piece comprises a plurality of first limiting pieces which are arranged along the circumference at intervals, and a first mounting groove is formed between every two adjacent first limiting pieces; the second positioning piece and the first positioning piece are oppositely arranged, the second positioning piece comprises a plurality of second limiting pieces arranged at intervals along the circumference, and a second mounting groove is formed between every two adjacent second limiting pieces; the first limiting piece and the second limiting piece are arranged in a staggered mode. A part of the end of the first limiting piece is inserted into the second mounting groove. According to the utility model, one part of the first limiting piece is inserted between the two second limiting pieces, after the first magnetic steel is adhered to the rotating shaft and the first positioning piece is taken down from one axial end, the second magnetic steel is adhered between the two first magnetic steels, so that the second magnetic steel and the first magnetic steel are tightly attached; therefore, the diameter of the rotating shaft is reduced.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, specifically to a surface-mount permanent magnet motor magnet positioning device. Background Technology

[0002] In the motor manufacturing industry, the rotor of a surface-mount internal rotor permanent magnet motor consists of a shaft and magnets. The magnets are evenly distributed around the circumference of the outer surface of the shaft. The magnets in a surface-mount internal rotor permanent magnet motor are attached using adhesive to evenly adhere them to the outer surface of the shaft around the circumference.

[0003] Chinese patent document CN107425679B discloses a motor rotor magnet pasting device and its pasting method, including: a pair of magnet positioning discs, the outer edge of the magnet positioning discs is provided with a number of protruding teeth for defining the position of the magnets, the magnets are pasted between the protruding teeth of the magnet positioning discs, and the magnet positioning discs can be removed after the glue on the magnets has solidified.

[0004] However, in existing technology, magnets are mounted between protrusions on two opposing magnet positioning discs. After the magnets are attached, the protrusions have a certain width, resulting in gaps between the attached magnets. This gap leads to a larger overall diameter of the manufactured motor, making it unsuitable for production environments with smaller diameters. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the defect that the existing magnet bonding device and bonding method cannot be applied to the production of motors with small diameters, thereby providing a surface-mount permanent magnet motor magnet positioning device.

[0006] To solve the above-mentioned technical problems, this utility model provides a surface-mount permanent magnet motor magnet positioning device, comprising:

[0007] A first positioning element is used to be installed on one end of a rotating shaft. The first positioning element includes a plurality of first limiting elements arranged at intervals along the circumference. A first mounting groove is formed between two adjacent first limiting elements. The first mounting groove is used to limit the position of the first magnet.

[0008] The second positioning element is used to be installed on the other end of the rotating shaft. The second positioning element is disposed opposite to the first positioning element. The second positioning element includes a plurality of second limiting elements arranged at intervals along the circumference. A second mounting groove is formed between two adjacent second limiting elements. The second mounting groove is used to limit the second magnet.

[0009] The first limiting member and the second limiting member are staggered, and a portion of the end of the first limiting member is inserted into the second mounting groove.

[0010] Preferably, a gap is provided between the first limiting member and the rotating shaft, and an injection hole communicating with the gap is provided on the first limiting member.

[0011] Preferably, the inner side of the first limiting member is provided with a protrusion extending radially toward the rotating shaft, and the protrusion abuts against the outer surface of the rotating shaft.

[0012] Preferably, the protrusion is disposed on the end of the first limiting member near the second positioning member.

[0013] Preferably, the glue injection holes are provided at intervals along the length direction of the first limiting member.

[0014] Preferably, the end face of the first limiting member away from the rotating shaft is an inclined surface, and the inclined surface extends inward from the first limiting member toward the second limiting member.

[0015] Preferably, the second positioning member is provided with a first clearance hole for the shaft to pass through.

[0016] Preferably, the first positioning member includes a connector, the connector being provided with a second clearance hole for the shaft to pass through, and the first limiting member being spaced apart on the outer peripheral surface of the connector.

[0017] Preferably, it further includes: a bushing, the bushing being detachably connected to the connector, the bushing having a receiving cavity, one axial end of the receiving cavity having an opening for the rotating shaft to pass through, and the side of the bushing away from the opening having a gripper for easy grasping.

[0018] Preferably, the inner end face of the second limiting member abuts against the rotating shaft.

[0019] The technical solution of this utility model has the following advantages:

[0020] 1. The surface-mount permanent magnet motor magnet positioning device provided by this utility model extends the first limiting member toward the second positioning member, so that a part of the first limiting member is inserted between the two second limiting members. At this time, the first mounting groove and the second mounting groove are staggered. After the magnet is glued to the rotating shaft, the first positioning member is removed from one end of the axial direction, and the second magnet is glued between the two first magnets, so that the second magnet and the first magnet fit tightly together, reducing the gap between them, thereby reducing the diameter of the rotating shaft and thus reducing the size of the motor.

[0021] 2. The surface-mount permanent magnet motor magnet positioning device provided by this utility model allows adhesive to enter the gap between the first limiting member and the rotating shaft through the adhesive injection hole, thereby covering the outer circumferential surface of the rotating shaft. This eliminates the need to apply adhesive to the second magnet when attaching it, which not only simplifies the operation process but also improves the assembly efficiency.

[0022] 3. The surface-mount permanent magnet motor magnet positioning device provided by this utility model, after the first magnet is bonded, glue is injected into the gap through the glue injection hole. When the first positioning part is taken out, the protrusion abuts against the end face of the rotating shaft, so that the protrusion can spread the glue evenly. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A perspective view of a surface-mounted permanent magnet motor magnet positioning device provided in one embodiment of this utility model;

[0025] Figure 2 for Figure 1 Exploded view of the surface-mount permanent magnet motor magnet positioning device in the image;

[0026] Figure 3 for Figure 1 Longitudinal sectional view of the surface-mounted permanent magnet motor magnet positioning device in the image;

[0027] Figure 4 for Figure 3 Enlarged view of part A in the image;

[0028] Figure 5 for Figure 3 Enlarged view of part B in the image.

[0029] Explanation of reference numerals in the attached figures:

[0030] 111. First positioning component; 112. First limiting component; 113. Clearance; 114. Protrusion; 115. Glue injection hole; 116. Inclined surface; 117. Connecting component; 118. Second clearance hole; 119. Bushing; 120. Gripper component;

[0031] 211. Second positioning component; 212. Second limiting component; 213. First clearance hole;

[0032] 311. Rotating shaft; 312. First magnet; 313. Second magnet. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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 this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] The surface-mount permanent magnet motor magnet positioning device provided in this embodiment is used to attach magnets to a permanent magnet motor.

[0038] like Figure 1 , Figure 2The diagram illustrates a specific embodiment of the surface-mount permanent magnet motor magnet positioning device provided in this embodiment, comprising: a first positioning member 111 and a second positioning member 211. The first positioning member 111 and the second positioning member 211 are respectively installed at both ends of a rotating shaft 311, and the magnets are installed on the outer circumferential surface of the rotating shaft 311. The first positioning member 111 includes a plurality of first limiting members 112 spaced apart along the circumference, with a first mounting groove formed between adjacent first limiting members 112, the width of which is equal to the width of the first magnet 312. The second positioning member 211 includes a plurality of second limiting members 212 spaced apart along the circumference, with a second mounting groove formed between adjacent second limiting members 212, the width of which is equal to the width of the second magnet 313. The first mounting groove is used to limit the first magnet 312, and the second mounting groove is used to limit the second magnet 313. During installation, the N and S poles of the first magnet 312 and the second magnet 313 are reversed. In the first embodiment, the upper end of the first magnet 312 is the N pole and the lower end is the S pole, and the upper end of the second magnet 313 is the S pole and the lower end is the N pole. In the second embodiment, the upper end of the first magnet 312 is the S pole and the lower end is the N pole, and the upper end of the second magnet 313 is the N pole and the lower end is the S pole.

[0039] When it is necessary to attach magnets to the rotating shaft 311, the first positioning member 111 and the second positioning member 211 are respectively installed at both ends of the rotating shaft 311 along its axial direction. The second positioning member 211 is arranged opposite to the first positioning member 111, and the first limiting member 112 and the second limiting member 212 extend toward each other. The first limiting member 112 and the second limiting member 212 are staggered. A portion of the end of the first limiting member 112 is inserted into the second mounting groove, that is, the two sides of the first limiting member 112 are abutted and fixed by the two second limiting members 212. By inserting a portion of the first limiting member 112 into the second mounting groove, it is easier to fix the first positioning member 111. At this time, the two first limiting members 112 position the first magnet 312, and then the two second limiting members 212 position the second magnet 313.

[0040] By extending the first limiting member 112 toward the second positioning member 211, a portion of the first limiting member 112 is inserted between the two second limiting members 212. At this time, the first mounting groove and the second mounting groove are staggered. After the first magnet 312 is bonded to the rotating shaft 311, the first positioning member 111 is removed from one end in the axial direction, and the second magnet 313 is bonded between the two first magnets 312, so that the second magnet 313 and the first magnet 312 fit tightly together, reducing the gap 113 between them, thereby reducing the diameter of the rotating shaft 311 and thus reducing the size of the motor.

[0041] like Figure 3 , Figure 4As shown, in this embodiment, a gap 113 is provided between the inner end face of the first limiting member 112 and the outer peripheral surface of the rotating shaft 311. The first limiting member 112 is provided with an injection hole 115 communicating with the gap 113. Adhesive can enter the gap 113 between the first limiting member 112 and the rotating shaft 311 through the injection hole 115, thereby covering the outer peripheral surface of the rotating shaft 311. This eliminates the need to apply adhesive to the second magnet 313 when bonding it, simplifying the operation and improving assembly efficiency. Furthermore, since the adhesive acts directly between the rotating shaft 311 and the first limiting member 112, it ensures a stronger and more uniform bond between the second magnet 313 and the rotating shaft 311. In practical applications, this design effectively reduces the risk of magnet detachment due to uneven adhesive application, thereby improving the stability and reliability of the motor. Alternatively, as an alternative implementation, the glue injection hole 115 can also be provided on the upper end face of the first limiting member 112 and communicate with the gap 113.

[0042] like Figure 5 As shown, in this embodiment, a protrusion 114 extends radially toward the rotating shaft 311 from the inner side of the first limiting member 112, and the protrusion 114 abuts against the outer surface of the rotating shaft 311. After the first magnet 312 is bonded, glue is introduced into the gap 113 through the glue injection hole 115. When the first positioning member 111 is removed outward, the protrusion 114 abuts against the outer surface of the rotating shaft 311, allowing the protrusion 114 to spread the glue evenly, avoiding uneven distribution of glue on the surface of the rotating shaft 311, thereby ensuring the bonding quality between the second magnet 313 and the rotating shaft 311. Because the glue is spread evenly, the risk of motor failure due to incomplete glue curing is reduced. Alternatively, as an alternative implementation, the protrusion 114 can be omitted, and the glue injection hole 115 can be set as a rectangular through hole on the outer end face of the first limiting member 112, through which glue can be directly applied to the outer surface of the rotating shaft 311.

[0043] like Figure 5 As shown, in this embodiment, the protrusion 114 is disposed on the end of the first limiting member 112 near the end of the second positioning member 211. The glue injected through the glue injection hole 115 adheres to the surface of the rotating shaft 311 and flows downward along the surface of the rotating shaft 311 under the action of gravity. The protrusion 114, after being disposed at the end, can scrape the glue upward from the bottom of the rotating shaft 311, so that the glue is evenly coated on the surface of the rotating shaft 311, which can ensure the bonding strength between the magnet and the rotating shaft 311, thereby improving the performance and reliability of the motor. By precisely controlling the thickness and range of the glue application, the motor running noise and vibration problems caused by uneven glue distribution can be effectively avoided. In addition, as an alternative implementation, two protrusions 114 can be disposed at the end or middle position of the first limiting member 112.

[0044] like Figure 2 As shown, in this embodiment, multiple glue injection holes 115 are spaced apart along the length of the first limiting member 112. The glue injection holes 115 penetrate the first limiting member 112 radially. After the glue is injected through the multiple glue injection holes 115, it can be arranged in multiple segments along the axial direction of the rotating shaft 311. This ensures that the glue injected into each glue injection hole 115 can be evenly spread in the axial direction when the protrusion 114 smooths the glue. This design not only improves the uniformity of glue application but also maximizes the bonding area of ​​the glue on the rotating shaft 311 through the multi-segment arrangement, thereby enhancing the bonding strength between the magnet and the rotating shaft 311. Furthermore, as an alternative implementation, the number of glue injection holes 115 is not limited, and those skilled in the art can modify it according to actual needs, for example, by providing three, four, etc.

[0045] like Figure 2 As shown, in this embodiment, the side of the first limiting member 112 away from the rotating shaft 311 is an inclined surface 116, that is, the outer end face of the first limiting member 112 is an inclined surface 116. The inclined surface 116 is radially inward from the first limiting member 112 toward the second limiting member 212. After the glue is injected into the gap 113 through the glue injection hole 115, the lower end of the second magnet 313 is engaged into the second mounting groove, and the second magnet 313 is placed against the inclined surface 116. At this time, the distance between the lower end of the second magnet 313 and the rotating shaft 311 is small, and the distance between the upper end is large. Since the second magnet 313 is pre-magnetized, there is a magnetic attraction between the second magnet 313 and the rotating shaft 311. When the first positioning component 111 is removed upwards, while the protrusion 114 smooths out the adhesive, the second magnet 313 slowly moves towards the rotating shaft 311 under the influence of magnetic attraction. As the first positioning component 111 moves upwards, the second magnet 313 gradually comes into contact with the rotating shaft 311 and is then bonded to the outer surface of the rotating shaft 311 with adhesive. Due to the continuous action of the magnetic force, the second magnet 313 maintains close contact with the rotating shaft 311 during the bonding process, thus ensuring that no gaps are created in the adhesive during curing due to the movement of the second magnet 313. The slow bonding process improves the bonding quality after the adhesive has cured. When the first positioning component 111 is completely removed, the second magnet 313 is firmly bonded to the rotating shaft 311 with adhesive, achieving precise positioning and fixation of the second magnet 313. Alternatively, as an alternative implementation, the outer end face of the first limiting member 112 can also be set as a vertical plane, so that the second magnet 313 can be installed on the rotating shaft 311 after the first positioning member 111 is completely removed.

[0046] like Figure 2As shown, in this embodiment, the second positioning member 211 is provided with a first clearance hole 213 for the rotating shaft 311 to pass through. The second positioning member 211 is circular and placed horizontally. After one end of the rotating shaft 311 passes through the first clearance hole 213, it abuts against the upper end face of the second positioning member 211. The first clearance hole 213 allows the rotating shaft 311 to pass through, reducing the volume of the second positioning member 211, while providing sufficient space to avoid interference with the rotating shaft 311. Alternatively, as an alternative implementation, the second positioning member 211 can also be configured with other shapes, and its second limiting member 212 can be arranged circumferentially.

[0047] like Figure 2 As shown, in this embodiment, the first positioning member 111 includes a connector 117, which is circular, and first limiting members 112 are spaced apart on the outer circumferential surface of the connector 117. The connector 117 is provided with a second clearance hole 118 for the rotating shaft 311 to pass through, and the second clearance hole 118 is concentrically arranged with the connector 117. The second clearance hole 118 allows the rotating shaft 311 to pass through, and the first limiting members 112 are evenly distributed on the outer side of the rotating shaft 311 after being circumferentially spaced. In addition, as an alternative embodiment, the shape of the connector 117 can also be set to other shapes, and the first limiting members 112 can be arranged circumferentially. In addition, as an alternative embodiment, the first limiting members 112 can also be provided on the lower end face of the connector 117.

[0048] like Figure 2 As shown, this embodiment also includes: a bushing 119, which is detachably connected to the connector 117. The bushing 119 has a receiving cavity, and one axial end of the receiving cavity has an opening for the rotating shaft 311 to pass through. The rotating shaft 311 passes through the second clearance hole 118 of the connector 117 and is located in the receiving cavity of the bushing 119. A gripper 120 is provided on the side of the bushing 119 away from the opening. The gripper 120 is a cylindrical bolt, and the gripper 120 is threadedly connected to the bushing 119. When it is necessary to remove the connector 117, the connector 117 can be completely removed by pulling out the gripper 120. The design of the gripper 120 makes the operation more convenient and ensures the stability of the connector 117 during the removal process. In addition, the threaded connection of the gripper 120 also facilitates the quick replacement or maintenance of the connector 117 when needed. Alternatively, as an alternative implementation, the bushing 119 can be omitted, and the connector 117 can be removed by directly pulling it outward.

[0049] like Figure 2As shown, in this embodiment, the inner end face of the second limiting member 212 abuts against the outer surface of the rotating shaft 311. When the first magnet 312 is installed, its lower end abuts against the upper end face of the second limiting member 212. The second magnet 313 is installed between the two second limiting members 212, meaning its installation height is lower than that of the first magnet 312. After the first magnet 312 is installed, its upper end is higher than the upper end face of the rotating shaft 311. After the second magnet 313 is installed, its upper and lower ends are flush with the upper and lower ends of the rotating shaft 311. At this point, a non-magnetic annular plate is needed. This plate is placed on the upper end face of all the first magnets 312, and an external force is applied to move the first magnets 312 downwards, aligning them with the height of the rotating shaft 311 and completing the installation. By abutting the inner end face of the second limiting member 212 against the outer surface of the rotating shaft 311, the first magnet 312 can be initially positioned to hold the second magnet 313 in place. Alternatively, as an alternative implementation, the inner end face of the second limiting member 212 may not abut against the outer surface of the rotating shaft 311. After the rotating shaft 311 passes through the first clearance hole 213, the first clearance hole 213 limits the rotation shaft 311. In this case, the lower end of the first magnet 312 does not abut against the second limiting member 212, but rather against the upper end face of the second positioning member 211, which also allows for the installation of the first magnet 312.

[0050] Installation method of the surface-mount permanent magnet motor magnet positioning device: The first positioning component 111 includes: a first limiting component 112, a connecting component 117, and a bushing 119. The connecting component 117 is circular, and a second clearance hole 118 is provided at its center. The bushing 119 is detachably mounted on the upper part of the connecting component 117 by bolts, and a gripper 120 is provided at the upper end of the bushing 119. The first limiting component 112 extends downward from the outer end face of the connecting component 117, and a first mounting groove is provided between two adjacent first limiting components 112. Multiple glue injection holes 115 are provided on the first limiting component 112 along the axial direction of the rotating shaft 311. The glue injection holes 115 penetrate the first limiting component 112 radially. A gap 113 is provided between the inner end face of the first limiting component 112 and the rotating shaft 311, and the glue injection holes 115 communicate with the gap 113. The second positioning member 211 has a first clearance hole 213 at its center, and a second limiting member 212 is provided on the upper end surface of the second positioning member 211 extending upward along the axial direction.

[0051] When installing the first positioning member 111 and the second positioning member 211, first place the second positioning member 211 on the flat surface, so that the second limiting member 212 extends upward in the vertical direction. Stand the rotating shaft 311 upright, with one end of the rotating shaft 311 passing through the first clearance hole 213 and the flat surface, and the lower end face of the rotating shaft 311 abutting against the upper end face of the second positioning member 211. Then, install the first positioning member 111 downward from above the rotating shaft 311 to the other end of the rotating shaft 311. The upper end face of the rotating shaft 311 abuts against the lower end face of the connector 117 of the first positioning member 111. At this time, the first limiting member 112 is located on the outer surface of the rotating shaft 311, and the lower end of the first limiting member 112 is inserted into the side of the second mounting groove facing the rotating shaft 311.

[0052] When attaching the first magnet 312 and the second magnet 313, first apply glue to one side of the first magnet 312, then slide the first magnet 312 from the top of the first mounting groove to the bottom of the first mounting groove, thereby attaching the first magnet 312 to the rotating shaft 311. Inject glue into the glue injection hole 115, place the lower end of the second magnet 313 into the second mounting groove, and the second magnet 313 abuts against the outer end face of the first limiting member 112. After grasping the gripper 120, lift the first positioning member 111 vertically upwards. Because the outer end face of the first limiting member 112 is an inclined surface 116, the thickness of the lower end of the first limiting member 112 is relatively small, and its thickness gradually increases as it extends upwards from the lower end. As the first positioning member 111 is lifted upwards, the first magnet 312 gradually comes into contact with the outer surface of the rotating shaft 311. Simultaneously, during this upward lifting process, the protrusion 114 at the lower end of the first limiting member 112 smooths out the adhesive, increasing the bonding strength between the first magnet 312 and the rotating shaft 311. When the first positioning member 111 is completely removed, the second magnet 313 is completely bonded to the outer surface of the rotating shaft 311. Then, a non-magnetic annular plate is placed on the upper surface of all the first magnets 312, and an external force is applied to move the first magnets 312 downwards, aligning them with the height of the rotating shaft 311.

[0053] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A surface-mount permanent magnet motor magnet positioning device, characterized in that, include: The first positioning member (111) is used to be installed on one end of the rotating shaft (311). The first positioning member (111) includes a plurality of first limiting members (112) arranged at intervals along the circumference. A first mounting groove is formed between two adjacent first limiting members (112). The first mounting groove is used to limit the first magnet (312). The second positioning member (211) is used to be installed on the other end of the rotating shaft (311). The second positioning member (211) is disposed opposite to the first positioning member (111). The second positioning member (211) includes a plurality of second limiting members (212) arranged at intervals along the circumference. A second mounting groove is formed between two adjacent second limiting members (212). The second mounting groove is used to limit the second magnet (313). The first limiting member (112) and the second limiting member (212) are staggered, and a portion of the end of the first limiting member (112) is inserted into the second mounting groove.

2. The surface-mount permanent magnet motor magnet positioning device according to claim 1, characterized in that, A gap (113) is provided between the first limiting member (112) and the rotating shaft (311), and an injection hole (115) communicating with the gap (113) is provided on the first limiting member (112).

3. The surface-mount permanent magnet motor magnet positioning device according to claim 2, characterized in that, The inner side of the first limiting member (112) extends radially toward the rotating shaft (311) and is provided with a protrusion (114), the protrusion (114) abutting against the outer surface of the rotating shaft (311).

4. The surface-mount permanent magnet motor magnet positioning device according to claim 3, characterized in that, The protrusion (114) is disposed on the end of the first limiting member (112) near the second positioning member (211).

5. The surface-mount permanent magnet motor magnet positioning device according to claim 2, characterized in that, The glue injection holes (115) are provided at intervals along the length direction of the first limiting member (112).

6. The surface-mount permanent magnet motor magnet positioning device according to claim 3, characterized in that, The side face of the first limiting member (112) away from the rotating shaft (311) is an inclined surface (116), and the inclined surface (116) extends inward from the first limiting member (112) toward the second limiting member (212).

7. The surface-mount permanent magnet motor magnet positioning device according to any one of claims 1-6, characterized in that, The second positioning member (211) is provided with a first clearance hole (213) for the shaft (311) to pass through.

8. The surface-mount permanent magnet motor magnet positioning device according to any one of claims 1-6, characterized in that, The first positioning member (111) includes a connector (117), the connector (117) being provided with a second clearance hole (118) for the rotating shaft (311) to pass through, and the first limiting member (112) being spaced apart on the outer peripheral surface of the connector (117).

9. The surface-mount permanent magnet motor magnet positioning device according to claim 8, characterized in that, Also includes: A bushing (119) is detachably connected to the connector (117). The bushing (119) is provided with a receiving cavity. One end of the receiving cavity is provided with an opening for the rotating shaft (311) to pass through. A gripper (120) for easy gripping is provided on the side of the bushing (119) away from the opening.

10. The surface-mount permanent magnet motor magnet positioning device according to any one of claims 1-6, characterized in that, The inner end face of the second limiting member (212) is attached to the rotating shaft (311).

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