Handle for mounting rotor magnetic steel of permanent magnet synchronous motor

Abstract

The invention relates to the technical field of assembly tools, and discloses a handle for mounting rotor magnetic steel of a permanent magnet synchronous motor. Comprising a magnetic conductive handle and a non-magnetic conductive fixing head, a counter bore is formed in one end of the fixing head, and one end of the handle is inserted into the counter bore; an embedding groove is formed in the other end of the fixing head, the embedding groove is used for placing the magnetic steel, a lining part is arranged in the embedding groove, and the magnetic steel of different sizes can be embedded in the lining part. The installation efficiency and safety of the magnetic steel are improved through the installation handle.

Description

Technical Field

[0001] The present application relates to the technical field of assembly tools, and in particular to a handle for installing rotor magnets of a permanent magnet synchronous motor. Background Art

[0002] The motor rotor core is the core component of the drive motor. Multiple permanent magnets (magnetic steel) are usually installed on its surface to form a stable magnetic field, thereby ensuring the motor's efficient energy conversion and operating performance.

[0003] The rotor magnets of conventional permanent magnet synchronous motors are installed by the operator manually grasping and aligning them with the magnet slots. This traditional installation process has the following drawbacks: Because the magnet surface is coated with glue, after a period of manual operation, the glue will adhere to the hands or gloves, impacting both the environmental 5S and the operator's hand health. Furthermore, the traditional manual installation process can easily cause the magnet to slip, resulting in damage. Summary of the Invention

[0004] In order to improve the problems existing in the traditional installation process, the present application provides a handle for installing the rotor magnets of a permanent magnet synchronous motor.

[0005] The present application provides a handle for installing the rotor magnets of a permanent magnet synchronous motor, which adopts the following technical solution:

[0006] A handle for installing magnets on a permanent magnet synchronous motor rotor comprises a magnetic handle and a non-magnetic fixing head. A countersunk hole is provided at one end of the fixing head, and one end of the handle is inserted into the countersunk hole. An embedding groove is provided at the other end of the fixing head, and the embedding groove is used to place the magnets. A lining is provided in the embedding groove, and magnets of different sizes can be embedded in the lining assembly.

[0007] By adopting this technical solution, which utilizes a magnetic handle and a non-magnetic fixing head, the magnetic handle maintains adhesion to the magnet embedded in the slot, while the non-magnetic fixing head reduces magnetic attraction interference, significantly improving installation efficiency and consistency. This makes it suitable for high-precision motor mass production scenarios. The handle's countersunk plug-in structure allows for quick assembly and disassembly of the fixing head, ensuring a stable connection while facilitating maintenance and replacement. The lining design allows the slot to accommodate magnets of varying sizes, expanding the applicability of the installation handle.

[0008] Optionally, the handle includes a sleeve and a gripping rod, the gripping rod is slidably sleeved in the sleeve, the sleeve is fixedly connected in the countersunk hole, and the end of the gripping rod abuts against the bottom wall of the countersunk hole.

[0009] By adopting the above technical solution, the grip is slidably connected to the sleeve. When installing the magnet, the sleeve is held with one hand and the grip is pulled outward with the other hand to separate the grip from the magnet, reducing the magnetic attraction between the grip and the magnet, making it easier to remove the magnet from the embedded slot.

[0010] Optionally, an elastic member is provided between the grip rod and the sleeve, an annular groove is provided on the side wall of the grip rod, the elastic member is placed in the annular groove, and both ends of the elastic member respectively abut against the inner wall of the annular groove and the inner side of the anti-slip ring provided at the end of the sleeve.

[0011] By adopting the above technical solution, when the grip moves outward, the elastic part is compressed and the potential energy increases. When the grip is released, the grip automatically resets under the action of the elastic part, making it convenient for the magnet to be adsorbed on the grip next time the magnet is removed. At the same time, a cavity is formed between the end of the grip and the sleeve, which is subjected to gas pressure when the grip is reset, thereby slowing down the grip reset speed and avoiding collision with the fixed head.

[0012] Optionally, an ejection assembly is provided in the fixed head, and the ejection assembly includes a push rod and a connecting rod structure, the free ends of the connecting rod structure are respectively hinged to the end of the push rod and the connecting seat provided on the side wall of the grip rod, and a cavity for the connecting rod structure to move is provided in the fixed head, and the connecting rod structure is rotatably connected in the cavity, and a guide hole is provided between the cavity and the embedding groove, and the push rod is slidably connected in the guide hole; a guide groove is provided through the side wall of the sleeve along the length direction, and the connecting seat is slidably connected in the guide groove.

[0013] By adopting the above technical solution, when the handle is pulled, the handle and the ejection assembly are linked together. While the handle is separated from the magnet, the magnet is ejected by the ejection assembly at the same time, increasing the separation distance between the handle and the magnet, making it easier to remove the magnet. The ejection assembly can accurately control the release of the magnet, reducing the risk of damage to the magnet during manual peeling.

[0014] Optionally, the connecting rod structure includes support rod one, support rod two and support rod three, which are hinged in sequence. The movable free end of the support rod is hinged to the end of the push rod. The middle position of the support rod two is rotatably connected to the rotating shaft set in the cavity, and the free end of the support rod three is hinged to the connecting seat.

[0015] By adopting the above technical solution, when the grip is pulled, the support rod three is driven to move, and the lever principle is used to drive the support rod one to move in the opposite direction of the support rod three. The support rod one is connected to the push rod, thereby driving the push rod to move and pushing the magnet outward, separating the grip from the magnet, reducing the magnetic attraction between the grip and the magnet, and at the same time using the push rod to push the magnet out of the embedded slot.

[0016] Optionally, the lining member is provided with a storage hole for placing the magnetic steel longitudinally, a retaining ring is provided on the peripheral side of one end of the lining member, and the fixing head is provided with a limiting groove for the retaining ring to be inserted on the inner wall of the embedding groove; an extension edge is provided on the opposite side of the other end of the lining member, a clamping block is provided on the extension edge, a placement groove is provided on the end of the fixing head for the extension edge to be embedded, and a clamping groove is provided in the placement groove for the clamping block to be inserted.

[0017] By adopting the above technical solution, during installation, align the clamping ring of the lining with the limiting groove of the fixed head, push it in axially until the clamping ring is in place, align the extended edge at the other end with the placement groove, press to make the card block elastically deform and then snap into the card slot to complete two-way fixation; during disassembly, lift the extended edges on both sides and pull the extended edges on both sides to remove the lining. The extended edges and the card block not only play a fixing role, but also increase the gripping force of the lining when removing it, making it easier to replace the lining.

[0018] Optionally, a guiding slope is provided on the inner side of the lining member close to one end of the extended edge.

[0019] By adopting the above technical solution, the entrance end area of ​​the storage hole is increased by setting the guiding bevel. At the same time, the guiding bevel guides the magnetic steel, making it easier for the magnetic steel to be placed in the embedding groove.

[0020] Optionally, a gap is provided between the embedding groove and the countersunk hole.

[0021] By adopting the above technical solution, the magnet is prevented from being directly adsorbed on the handle, the force between the magnet and the handle is reduced, and the magnet is easily removed from the embedding slot.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The overall structure combines a magnetic handle with a non-magnetic fixed head, ensuring that the magnetic handle maintains adsorption with the magnet embedded in the slot. At the same time, the non-magnetic fixed head reduces magnetic adsorption interference, significantly improving installation efficiency and consistency, making it suitable for high-precision motor mass production scenarios. The handle uses a countersunk plug-in structure to achieve quick disassembly and assembly of the handle and fixed head, ensuring connection stability while facilitating maintenance and replacement; the lining design allows the embedded slot to adapt to magnets of different sizes, expanding the application range of the installation handle;

[0024] 2. The grip is slidably connected to the sleeve. When installing the magnet, hold the sleeve with one hand and pull the grip outward with the other hand to separate the grip from the magnet, reducing the magnetic attraction between the grip and the magnet, making it easier to remove the magnet from the slot.

[0025] 3. When the handle is pulled, the handle and the ejection assembly are linked. When the handle is separated from the magnet, the magnet is ejected by the ejection assembly at the same time, increasing the separation distance between the handle and the magnet. The ejection assembly can accurately control the release of the magnet, reducing the risk of magnet damage during manual peeling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of the handle used for installing the rotor magnets of a permanent magnet synchronous motor according to Example 1 of the present application.

[0027] Figure 2 This is a cross-sectional view of a handle for installing the rotor magnets of a permanent magnet synchronous motor according to Example 1 of the present application.

[0028] Figure 3 This is a structural diagram of a handle for installing the rotor magnets of a permanent magnet synchronous motor according to Example 2 of the present application.

[0029] Figure 4 It is a structural schematic diagram of the lining component of Example 2 of the present application.

[0030] Figure 5 This is a cross-sectional view of a handle for installing the rotor magnets of a permanent magnet synchronous motor according to Example 3 of the present application.

[0031] Figure 6 This is a cross-sectional view of an ejection assembly provided on the mounting handle of Example 4 of the present application.

[0032] Figure 7 This is a cross-sectional view of the installation handle of Example 4 of the present application in the pulled-out state.

[0033] Figure 8 yes Figure 6 Enlarged view of part A in the middle.

[0034] Figure numerals: 1. handle; 11. sleeve; 111. anti-slip ring; 112. guide groove; 12. grip rod; 121. annular groove; 122. connecting seat; 2. fixed head; 21. countersunk hole; 22. embedded groove; 23. cavity; 24. limiting groove; 25. card slot; 26. rotating shaft; 3. magnet; 4. lining; 41. snap ring; 42. extension edge; 43. card block; 44. storage hole; 5. ejector assembly; 51. push rod; 52. support rod one; 53. support rod two; 54. support rod three; 6. elastic member. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings.

[0036] Throughout this specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0037] Example 1:

[0038] The present application discloses a handle for installing the rotor magnet of a permanent magnet synchronous motor. Figure 1 and Figure 2 , including a handle 1 and a fixed head 2, the handle 1 and the fixed head 2 are fixed by interference fit, the handle 1 is made of magnetic conductive material, preferably 45 steel, the handle 1 is made by processing an axis with a diameter of about 15 mm, one end of the handle 1 is a connecting end, and the other end is a gripping end, and the diameter of the connecting end is smaller than the diameter of the gripping end; the fixed head 2 is made of non-magnetic conductive material, preferably nylon material; a countersunk hole 21 is processed at the center position of the end face of one end of the fixed head 2, the connecting end of the handle 1 is inserted into the countersunk hole 21, and a strip-shaped embedding groove 22 is processed on the end face of the other end of the fixed head 2, the embedding groove 22 is used for embedding the magnet 3, and the size of the embedding groove 22 is slightly larger than the size of the magnet 3 by 0.1-0.2 mm, so that the magnet 3 can be easily embedded or removed.

[0039] There is a gap of about 1 mm between the countersunk hole 21 and the embedding groove 22 to prevent the magnet 3 from being directly adsorbed on the handle 1 .

[0040] The implementation principle of a handle for installing the rotor magnet of a permanent magnet synchronous motor in an embodiment of the present application is: when in use, the embedding groove 22 of the fixed head 2 is directly aligned with the side of the magnet 3, and the handle 1 will adsorb the side of the magnet 3 to prevent the magnet 3 from falling off, and then glue is applied to install the magnet 3 into the magnet 3 installation groove of the rotor core. Due to the gap between the countersunk hole 21 and the embedding groove 22, direct adsorption between the magnet 3 and the handle 1 is avoided, and the magnet 3 is easily separated from the handle 1; during the entire installation process, the operator no longer has any direct contact with the magnet 3, which effectively improves the installation efficiency and safety of the permanent magnet synchronous motor rotor magnet 3.

[0041] Example 2:

[0042] Reference Figure 3 and Figure 4The difference between this embodiment and embodiment 1 is that an inner lining part 4 is embedded in the embedding groove 22. The inner lining part 4 is a rectangular parallelepiped structure with a longitudinally penetrating cavity. The inner lining part 4 is made of non-magnetic material, preferably silicone or polyurethane. The inner lining part 4 has a certain elasticity, which is convenient for it to be installed in the embedding groove 22, and at the same time buffers the installation impact to prevent the magnetic steel 3 from cracking; the peripheral side of one end of the lining part 4 protrudes outward to form a snap ring 41, and a limiting groove 24 for the snap ring 41 to be snapped into is provided on the inner wall of the embedding groove 22. The two short side edges of the other end of the lining part 4 are fixedly connected with an extension edge 42, and the side of the extension edge 42 close to the fixed head 2 is fixedly connected with a T-shaped block 43. The fixed head 2 is provided with a placement groove for the extension edge 42 to be embedded, and a card slot 25 for the card block 43 to be snapped into is provided in the placement groove.

[0043] The longitudinally penetrating cavity on the lining member 4 is a receiving hole 44 for placing the magnetic steel 3. The receiving hole 44 has various specifications and sizes to adapt to magnetic steels 3 of different sizes. Different lining members 4 are selected according to different specifications.

[0044] A guiding slope is provided on the inner side of the outward end of the lining member 4, which can increase the opening area of ​​the receiving hole 44. When the magnet 3 is taken out, it guides the magnet 3 and facilitates the embedding of the magnet 3.

[0045] The implementation principle of a handle for installing the rotor magnet of a permanent magnet synchronous motor in an embodiment of the present application is: when in use, the corresponding lining part 4 is selected according to the specifications and dimensions of the magnet 3, and the lining part 4 is first installed in the embedding groove 22, so that the clamping ring 41 is clamped in the limiting groove 24, and the clamping block 43 is clamped in the clamping groove 25, limiting the longitudinal displacement of the lining part 4, and at the same time limiting.

[0046] Example 3:

[0047] Reference Figure 5 The difference between this embodiment and embodiment 1 or embodiment 2 is that the handle 1 includes a sleeve 11 and a grip rod 12, the sleeve 11 is made of non-magnetic material, and the grip rod 12 is made of magnetic material. The sleeve 11 is fixedly connected to the countersunk hole 21, and the grip rod 12 is slidably connected to the sleeve 11; an elastic member 6 is installed between the grip rod 12 and the sleeve 11, and the elastic member 6 is a compression spring. An annular groove 121 is provided on the side wall of the grip rod 12, and the elastic member 6 is placed in the annular groove 121. One end of the elastic member 6 abuts against the side wall of the annular groove 121, and the other end of the elastic member 6 abuts against the inner side of an anti-slip ring 111 formed by the inward bending end of the sleeve 11, and the grip rod 12 is kept in the sleeve 11 by the elastic member 6.

[0048] The implementation principle of the handle for installing the rotor magnet of a permanent magnet synchronous motor in the embodiment of the present application is as follows: when the installation handle 1 is used to assemble the magnet 3, after the magnet 3 is placed in the installation groove of the rotor core, the grip rod 12 is pulled to separate the magnet 3 from the grip rod 12, thereby reducing the adsorption force of the grip rod 12 on the magnet 3, making it easier for the magnet 3 to withdraw from the fixed head 2. At the same time, the elastic member 6 is compressed and the potential energy increases. After the grip rod 12 is released, the grip rod 12 moves toward the inside of the sleeve 11 under the action of the elastic member 6, and a cavity is formed between the end of the grip rod 12 and the sleeve 11. During the rebound process of the grip rod 12, the cavity will generate a force on the grip rod 12 to prevent the grip rod 12 from resetting instantly and colliding with the fixed head 2; after the grip rod 12 returns to its initial state, it is convenient for the magnet 3 to be adsorbed on the end of the grip rod 12 when the magnet 3 is taken out next time.

[0049] Example 4:

[0050] Reference Figure 6-Figure 8 The difference between this embodiment and embodiment 1, embodiment 2 or embodiment 3 is that an ejection assembly 5 is installed in the fixed head 2, and the ejection assembly 5 includes a push rod 51 and a connecting rod structure. The push rod 51 and the connecting rod structure are both made of non-magnetic materials. The free ends of the connecting rod structure are hinged to the side wall of the handle 12 and the end of the push rod 51 respectively. There is a cavity 23 inside the fixed head 2 for the movement of the connecting rod structure. A guide hole is opened between the embedding groove 22 and the cavity 23, and the push rod 51 is slidably connected to the guide hole.

[0051] The connecting rod structure includes a support rod 1 52, a support rod 2 53 and a support rod 3 54 which are hinged in sequence. The free end of the support rod 1 52 is hinged to the end of the push rod 51. The middle part of the support rod 2 53 is rotatably connected to the rotating shaft 26 on the inner wall of the cavity 23. The side wall of the handle 12 is fixedly connected to the connecting seat 122. The free end of the support rod 3 54 is hinged to the connecting seat 122.

[0052] A guide groove 112 is formed through the side wall of the sleeve 11, and the guide groove 112 extends along the length of the sleeve 11. The connecting seat 122 is slidably connected to the guide groove 112. The connecting seat 122 slides along the guide groove 112 to limit the rotation of the handle 12 and ensure stable sliding when the handle 12 is pulled.

[0053] The implementation principle of a handle for installing the rotor magnet of a permanent magnet synchronous motor in an embodiment of the present application is: when in use, the grip 12 is pulled outward, and the push rod 51 is driven to move in the opposite direction of the grip 12 through the connecting rod structure, and the magnet 3 is pushed out of the embedding groove 22, so that the magnet 3 is separated from the grip 12, reducing the adsorption force of the grip 12 on the magnet 3, and facilitating the magnet 3 to exit the fixed head 2.

[0054] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A handle for installing the rotor magnet of a permanent magnet synchronous motor, characterized in that: The invention comprises a magnetic conductive handle (1) and a non-magnetic conductive fixed head (2), wherein one end of the fixed head (2) is provided with a countersunk hole (21), and one end of the handle (1) is inserted into the countersunk hole (21); the other end of the fixed head (2) is provided with an embedding groove (22), and the embedding groove (22) is used to place a magnetic steel (3); an inner lining component (4) is provided in the embedding groove (22), and magnetic steels (3) of different sizes can be embedded in the inner lining component.

2. The handle for installing the rotor magnet of a permanent magnet synchronous motor according to claim 1, characterized in that: The handle (1) comprises a sleeve (11) and a gripping rod (12), wherein the gripping rod (12) is slidably sleeved in the sleeve (11), the sleeve (11) is fixedly connected in the countersunk hole (21), and the end of the gripping rod (12) abuts against the bottom wall of the countersunk hole (21).

3. The handle for installing the rotor magnet of a permanent magnet synchronous motor according to claim 2, characterized in that: An elastic member (6) is provided between the gripping rod (12) and the sleeve (11); an annular groove (121) is provided on the side wall of the gripping rod (12); the elastic member (6) is placed in the annular groove (121); and two ends of the elastic member (6) respectively abut against the inner wall of the annular groove (121) and the inner side of an anti-slip ring (111) provided at the end of the sleeve (11).

4. The handle for installing the rotor magnet of a permanent magnet synchronous motor according to claim 2, characterized in that: An ejection assembly (5) is provided in the fixed head (2), and the ejection assembly (5) includes a push rod (51) and a connecting rod structure. The free end of the connecting rod structure is hinged to the end of the push rod (51) and a connecting seat (122) provided on the side wall of the gripping rod (12), respectively. A cavity (23) for the connecting rod structure to move is provided in the fixed head (2), and the connecting rod structure is rotatably connected in the cavity (23). A guide hole is provided between the cavity (23) and the embedding groove (22), and the push rod (51) is slidably connected in the guide hole; a guide groove (112) is provided through the side wall of the sleeve (11) along the length direction, and the connecting seat (122) is slidably connected in the guide groove (112).

5. The handle for installing the rotor magnet of a permanent magnet synchronous motor according to claim 4, characterized in that: The connecting rod structure includes a support rod 1 (52), a support rod 2 (53) and a support rod 3 (54) which are hinged in sequence. The movable free end of the support rod is hinged to the end of the push rod (51). The middle position of the support rod 2 (53) is rotatably connected to the rotating shaft (26) set in the cavity (23). The free end of the support rod 3 (54) is hinged to the connecting seat (122).

6. The handle for installing the rotor magnet of a permanent magnet synchronous motor according to claim 1, characterized in that: The lining member (4) is provided with a receiving hole (44) for placing the magnetic steel (3) in a longitudinal direction, a snap ring (41) is provided on the peripheral side of one end of the lining member (4), and a limiting groove (24) for the snap ring (41) to be inserted is provided on the inner wall of the embedding groove (22) of the fixing head (2); an extension edge (42) is provided on the opposite side of the other end of the lining member (4), a clamping block (43) is provided on the extension edge (42), a placement groove for the extension edge (42) to be inserted is provided at the end of the fixing head (2), and a clamping groove (25) for the clamping block (43) to be inserted is provided in the placement groove.

7. The handle for installing the rotor magnet of a permanent magnet synchronous motor according to claim 6, characterized in that: A guiding slope is provided on the inner side of the lining member (4) close to one end of the extension edge (42).

8. The handle for installing the rotor magnet of a permanent magnet synchronous motor according to claim 1, characterized in that: A gap is provided between the embedding groove (22) and the countersunk hole (21).

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