Permanent magnet motor rotor magnetic pole structure

Abstract

The invention relates to the technical field of permanent magnet motors, in particular to a permanent magnet motor rotor magnetic pole structure, which comprises an iron core and a plurality of groups of permanent magnets, the permanent magnets are provided with insertion grooves, the surface of the iron core is provided with a plurality of groups of insertion strips matched with the insertion grooves, one end of the iron core is provided with a connecting frame, and the connecting frame is fixedly connected with a plurality of groups of first separation blades. A pressing plate is arranged on one side of the connecting frame, and a spring is arranged between the connecting frame and the pressing plate; according to the invention, through the combined action of the inserting grooves, the inserting strips, the connecting frames, the first separation blades, the pressing plates, the buckle assemblies, the positioning assemblies and the like, people can conveniently mount or dismount multiple groups of permanent magnets on the surface of the iron core, and the permanent magnets and the iron core do not need to be fixed through multiple groups of screws; and the efficiency of mounting and dismounting the permanent magnet is improved, so that the permanent magnet is convenient to maintain or replace.

Description

Technical Field

[0001] The present invention relates to the technical field of permanent magnet motors, and in particular to a permanent magnet motor rotor magnetic pole structure. Background Art

[0002] The rotor of a permanent magnet motor includes permanent magnets, rotor core, rotating shaft, bearings, etc.

[0003] The magnetic pole structure of the existing permanent magnet motor rotor is mostly connected to the rotor core by screws. Due to the large number of permanent magnets, a large number of screws need to be turned during the installation or removal process, which results in a long time spent on the installation or removal of the magnets, and is not convenient for the subsequent maintenance or replacement of the permanent magnet structure. Summary of the invention

[0004] Based on the deficiencies in the prior art mentioned in the above background technology, the present invention provides a permanent magnet motor rotor pole structure.

[0005] The present invention overcomes the above technical problems by adopting the following technical solutions, specifically:

[0006] A permanent magnet motor rotor magnetic pole structure, comprising an iron core and multiple groups of permanent magnets, each of the permanent magnets is provided with a plug-in slot, a surface of the iron core is provided with multiple groups of plug-in strips that fit the plug-in slots, a connecting frame is installed at one end of the iron core, multiple groups of first baffles are fixedly connected to the connecting frame, a pressure plate is provided on one side of the connecting frame, a spring is provided between the connecting frame and the pressure plate, and multiple groups of second baffles are fixed to a position of one end of the iron core close to the plug-in strip;

[0007] Wherein, a buckle assembly acting on the connecting frame is arranged between the connecting frame and the iron core, and a positioning assembly is also arranged between the connecting frame and the iron core.

[0008] As a further solution of the present invention: the buckle assembly includes a plurality of support plates fixedly connected to the connecting frame, plug posts arranged on the support plates, and a plug hole opened on the inner surface of the iron core for inserting one end of the plug post;

[0009] Wherein, a driving component for controlling the movement of the plug post is arranged between the pressure plate and the plug post.

[0010] As a further solution of the present invention: the driving assembly includes a screw sleeve fixedly connected to a plurality of groups of the support plates, and a screw rod fixedly connected to one end of the plug column;

[0011] The screw rod is threadably sleeved inside the screw sleeve, and a transmission component for driving the screw sleeve to rotate is provided between the pressure plate and the screw sleeve.

[0012] As a further solution of the present invention: the transmission assembly includes a gear sleeved on the surface of the screw sleeve, and a rack fixedly connected to the pressing plate;

[0013] Wherein, the rack meshes with the gear after passing through the connecting frame.

[0014] As a further solution of the present invention: a guide rod is fixedly connected to the support plate, a guide block is fixedly connected to one end of the screw rod, and the guide block is slidably connected to the guide rod.

[0015] As a further solution of the present invention: the positioning assembly includes a positioning hole arranged on the surface of one end of the iron core, and a positioning block fixedly connected to the first baffle.

[0016] As a further solution of the present invention: a plurality of groups of limit clamping plates are connected to the connecting frame, and the limit clamping plates are fitted with one side of the pressing plate.

[0017] As a further solution of the present invention: a cylindrical clamping strip is arranged on the plug-in strip.

[0018] After adopting the above structure, the present invention has the following advantages compared with the prior art: through the joint action of the plug-in slot, the plug-in strip, the connecting frame, the first baffle, the pressure plate, the snap assembly and the positioning assembly, it is convenient for people to install multiple groups of permanent magnets on the surface of the iron core or remove them from the surface of the iron core, and it is no longer necessary to fix the permanent magnets to the iron core with multiple groups of screws, which improves the efficiency of installing and removing the permanent magnets, and facilitates the maintenance or replacement of the permanent magnets. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a schematic diagram of the structure of the iron core and the second baffle in the present invention.

[0021] Figure 3 It is a schematic diagram of the structure of the plug strip and the plug hole in the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of the permanent magnet and the plug-in slot in the present invention.

[0023] Figure 5 It is a structural schematic diagram of the connecting frame and the supporting plate in the present invention.

[0024] Figure 6 It is a schematic diagram of the structure of the pressure plate and the spring in the present invention.

[0025] Figure 7 It is a schematic diagram of the structure of the driving component in the present invention.

[0026] Figure 8 It is an enlarged view of point A in the present invention.

[0027] In the figure: 1, iron core; 2, permanent magnet; 3, plug-in slot; 4, plug-in strip; 5, connecting frame; 6, first baffle; 7, pressure plate; 8, spring; 9, second baffle; 10, support plate; 11, plug column; 12, plug hole; 13, screw sleeve; 14, screw rod; 15, gear; 16, rack; 17, guide rod; 18, guide block; 19, positioning hole; 20, positioning block; 21, limit clamping plate; 22, cylindrical clamping strip. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] See also Figures 1 to 8 In an embodiment of the present invention, a permanent magnet motor rotor pole structure includes an iron core 1 and multiple groups of permanent magnets 2, each of the permanent magnets 2 is provided with a plug-in slot 3, and the surface of the iron core 1 is provided with multiple groups of plug-in strips 4 that fit the plug-in slots 3. A connecting frame 5 is installed at one end of the iron core 1, and multiple groups of first baffles 6 are fixedly connected to the connecting frame 5. A pressure plate 7 is provided on one side of the connecting frame 5, and a spring 8 is provided between the connecting frame 5 and the pressure plate 7. Multiple groups of second baffles 9 are fixed to a position near the plug-in strip 4 at one end of the iron core 1;

[0030] Among them, a buckle assembly acting on the connecting frame 5 is arranged between the connecting frame 5 and the iron core 1, and a positioning assembly is also arranged between the connecting frame 5 and the iron core 1;

[0031] Since the plug-in slots 3 on the permanent magnet 2 match the contour of the plug-in strip 4, the plug-in slots 3 on the permanent magnet 2 can be aligned with the plug-in strip 4 and the permanent magnets 2 can be plugged into the plug-in strip 4 one by one, so that multiple groups of permanent magnets 2 can be embedded in the surface of the permanent magnet 2 row by row, and then the pressure plate 7 is pressed inward to move the pressure plate 7 in the direction close to the connecting frame 5, and the connecting frame 5 is close to one end of the iron core 1. The snap-in components between the connecting frame 5 and the iron core 1 can be aligned with each other through the positioning component, and the multiple groups of first baffles 6 fixedly connected to the connecting frame 5 will also be aligned with one end of the plug-in strip 4. After releasing the pressure plate 7, the pressure plate 7 will move away from the connecting frame 5 under the elastic force of the spring 8. At this time, the snap-in component can fix the connecting frame 5 and snap-in to one side of the iron core 1, so that multiple groups of first baffles 6 can all fit tightly and firmly on one end of the plug-in strip 4. One side of the permanent magnet 2 will fit with the first baffle 6 and the other side of the multiple groups of permanent magnets 2 will fit with the second baffle 9. Under the limiting effect of the first baffle 6 and the second baffle 9, the multiple groups of permanent magnets 2 embedded in the plug-in strip 4 will not slip off. Press the pressure plate 7 inward again. At this time, the buckle assembly no longer has a fixing buckle effect between the connecting frame 5 and the iron core 1, so that the connecting frame 5 can be separated from one end of the iron core 1 as a whole, so that the one side of the permanent magnet 2 embedded in the plug-in strip 4 is no longer restricted by the first baffle 6, and the permanent magnet 2 can be removed from the plug-in strip 4. In summary, this structure can facilitate people to install multiple groups of permanent magnets 2 on the surface of the iron core 1 or remove them from the surface of the iron core 1, and there is no need to fix the permanent magnet 2 and the iron core 1 with multiple sets of screws, which improves the efficiency of installing and removing the permanent magnet 2, and facilitates the maintenance or replacement of the permanent magnet 2.

[0032] In one embodiment of the present invention, the buckle assembly includes a plurality of support plates 10 fixedly connected to the connecting frame 5, a plug post 11 disposed on the support plate 10, and a plug hole 12 opened on the inner surface of the core 1 for inserting one end of the plug post 11;

[0033] Wherein, a driving component for controlling the movement of the plug post 11 is provided between the pressing plate 7 and the plug post 11;

[0034] When the pressure plate 7 is pressed to move toward the connecting frame 5, the driving component will drive the plug posts 11 on the several groups of support plates 10 to move toward the inner side of the connecting frame 5, so that the connecting frame 5 is attached to one end of the iron core 1 and one end of the plug post 11 is aligned with the insertion hole 12 on the inner surface of the iron core 1. When the pressure plate 7 is released so that the pressure plate 7 is away from the connecting frame 5 under the action of the spring 8, the driving component will drive the plug posts 11 on the several groups of support plates 10 to move toward the outer side of the connecting frame 5. At this time, the plug posts 11 will all be inserted into the inside of the insertion hole 12, and the connecting frame 5 will be fixed to one end of the iron core 1 by the restriction of the plug posts 11 and the insertion hole 12.

[0035] In another embodiment of the present invention, the driving assembly includes a screw sleeve 13 fixedly connected to a plurality of groups of the support plates 10, and a screw rod 14 fixedly connected to one end of the plug post 11;

[0036] The screw rod 14 is threadedly sleeved inside the screw sleeve 13, and a transmission component for driving the screw sleeve 13 to rotate is provided between the pressing plate 7 and the screw sleeve 13;

[0037] When the pressure plate 7 moves toward the direction approaching the connecting frame 5, the transmission assembly will drive the screw sleeves 13 on several groups of support plates 10 to rotate at the same time. At this time, the screw rod 14 threadedly sleeved inside the screw sleeve 13 will drive the plug post 11 to move toward the outside direction of the connecting frame 5 along the direction of the support plate 10 under the driving action of the screw sleeve 13. Conversely, when the pressure plate 7 moves toward the direction away from the connecting frame 5, the transmission assembly will drive the screw sleeves 13 on several groups of support plates 10 to rotate in the opposite direction at the same time. At this time, the screw rod 14 threadedly sleeved inside the screw sleeve 13 will drive the plug post 11 to move toward the inside direction of the connecting frame 5 along the direction of the support plate 10 under the driving action of the screw sleeve 13.

[0038] In another embodiment of the present invention, the transmission assembly includes a gear 15 sleeved on the surface of the screw sleeve 13, and a rack 16 fixedly connected to the pressure plate 7;

[0039] The rack 16 passes through the connecting frame 5 and meshes with the gear 15;

[0040] When the pressing plate 7 is pressed to move it toward the connecting frame 5, the rack 16 will be driven by the pressing plate 7 to move along one side of the gear 15. At this time, the gear 15 meshing with the rack 16 will rotate under the driving action of the rack 16. Conversely, when the pressing plate 7 moves away from the connecting frame 5, the gear 15 meshing with the rack 16 will rotate in the opposite direction under the driving action of the rack 16.

[0041] In another embodiment of the present invention, a guide rod 17 is fixedly connected to the support plate 10, and a guide block 18 is fixedly connected to one end of the screw rod 14, and the guide block 18 is slidably connected to the guide rod 17;

[0042] Since the guide block 18 is slidably connected to the guide rod 17, when the screw rod 14 is driven, it will drive the guide block 18 to slide along the direction of the guide rod 17 without deflection. Therefore, when the screw sleeve 13 is moved by rotating the screw rod 14, the screw rod 14 will not rotate with the screw sleeve 13 but can move along the guide rod 17 toward the outside or inside of the connecting frame 5.

[0043] In another embodiment of the present invention, the positioning assembly includes a positioning hole 19 provided on the surface of one end of the iron core 1, and a positioning block 20 fixedly connected to the first baffle 6;

[0044] The positioning block 20 matches the shape of the positioning hole 19. When the connecting frame 5 is close to one end of the iron core 1 and the positioning hole 19 is inserted into the interior of the positioning block 20, the snap-fit ​​assembly between the connecting frame 5 and the iron core 1 is aligned, and at the same time, the multiple groups of first baffles 6 fixedly connected to the connecting frame 5 will also be aligned with one end of the plug-in strip 4.

[0045] In another embodiment of the present invention, a plurality of groups of limit clamps 21 are connected to the connecting frame 5, and the limit clamps 21 are fitted with one side of the pressing plate 7;

[0046] When the pressing plate 7 moves in a direction away from the connecting frame 5 under the elastic force of the spring 8 , the limiting clamping plate 21 can limit the moving stroke of the pressing plate 7 to prevent the pressing plate 7 from being separated from one side of the connecting frame 5 .

[0047] In yet another embodiment of the present invention, a cylindrical clamping strip 22 is provided on the plug-in strip 4;

[0048] The width of the cylindrical clamping strip 22 is greater than that of the plug-in strip 4 . When the permanent magnet 2 is plugged into the plug-in strip 4 , the cylindrical clamping strip 22 can clamp the permanent magnet 2 to prevent the permanent magnet 2 from falling off the plug-in strip 4 .

[0049] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A permanent magnet motor rotor pole structure, comprising an iron core (1) and a plurality of groups of permanent magnets (2), characterized in that: The permanent magnets (2) are each provided with a plug-in slot (3), the surface of the iron core (1) is provided with a plurality of plug-in strips (4) that fit into the plug-in slots (3), a connecting frame (5) is installed at one end of the iron core (1), a plurality of first baffles (6) are fixedly connected to the connecting frame (5), a pressure plate (7) is provided on one side of the connecting frame (5), a spring (8) is provided between the connecting frame (5) and the pressure plate (7), and a plurality of second baffles (9) are fixedly provided at one end of the iron core (1) near the plug-in strip (4); Wherein, a buckle assembly acting on the connecting frame (5) is arranged between the connecting frame (5) and the iron core (1), and a positioning assembly is also arranged between the connecting frame (5) and the iron core (1).

2. A permanent magnet motor rotor pole structure according to claim 1, characterized in that: The buckle assembly comprises a plurality of support plates (10) fixedly connected to the connecting frame (5), a plug post (11) arranged on the support plate (10), and a plug hole (12) provided on the inner surface of the iron core (1) for inserting one end of the plug post (11); Wherein, a driving component for controlling the movement of the plug post (11) is provided between the pressure plate (7) and the plug post (11).

3. A permanent magnet motor rotor pole structure according to claim 2, characterized in that: The driving assembly comprises a screw sleeve (13) fixedly connected to a plurality of groups of the support plates (10), and a screw rod (14) fixedly connected to one end of the plug post (11); The screw rod (14) is threadably sleeved inside the screw sleeve (13), and a transmission component for driving the screw sleeve (13) to rotate is provided between the pressure plate (7) and the screw sleeve (13).

4. A permanent magnet motor rotor pole structure according to claim 3, characterized in that: The transmission assembly comprises a gear (15) sleeved on the surface of the screw sleeve (13), and a rack (16) fixedly connected to the pressing plate (7); Wherein, the rack (16) meshes with the gear (15) after passing through the connecting frame (5).

5. A permanent magnet motor rotor pole structure according to claim 3, characterized in that: A guide rod (17) is fixedly connected to the support plate (10), and a guide block (18) is fixedly connected to one end of the screw rod (14), and the guide block (18) is slidably connected to the guide rod (17).

6. A permanent magnet motor rotor pole structure according to claim 1, characterized in that: The positioning assembly comprises a positioning hole (19) arranged on the surface of one end of the iron core (1), and a positioning block (20) fixedly connected to the first baffle (6).

7. A permanent magnet motor rotor pole structure according to claim 1, characterized in that: A plurality of groups of position limiting clamping plates (21) are connected to the connecting frame (5), and the position limiting clamping plates (21) are in contact with one side of the pressing plate (7).

8. The permanent magnet motor rotor pole structure according to claim 1, characterized in that: The plug-in strip (4) is provided with a cylindrical clamping strip (22).

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