Rotor structure with partitioned magnets

Abstract

The utility model discloses a rotor structure with partitioned magnets, which belongs to the field of motor rotors, and comprises a rotating shaft, an iron core and a pressing assembly, the iron core is sleeved on the rotating shaft, a plurality of mounting grooves are uniformly arranged in the circumferential direction of the iron core, a plurality of magnets are arranged in each mounting groove, the iron core is provided with ventilation holes, and the pressing assembly is arranged on the iron core. The ventilation hole is formed between the rotating shaft and the magnetic block; the pressing assembly comprises a first pressing piece and a second pressing piece which are distributed at the two ends of the iron core, the first pressing piece and the second pressing piece cover the magnetic blocks at the two ends of the iron core, the iron core is provided with a locking piece connecting the first pressing piece and the second pressing piece, and the edge of the first pressing piece extends upwards to form a sleeve arranged around the iron core in a sleeving mode. A strip-shaped block corresponding to the mounting groove is arranged in the sleeve, and the magnetic block is limited on the inner side, the outer side, the upper side and the lower side through cooperation of the strip-shaped block, the extrusion block, the first pressing piece and the second pressing piece, so that the magnetic block is prevented from loosening or disengaging.

Description

Technical Field

[0001] The utility model relates to the technical field of motor rotors, in particular to a rotor structure with segmented magnets. Background Art

[0002] Since the permanent magnet motor rotor core needs to be embedded with magnetic steel, the magnetic steel is installed not only inside the rotor but also outside the core. In addition to installing the whole magnetic steel in a mounting slot of the core, there are also block magnetic steels installed. The centrifugal force and vibration of the rotating rotor will also cause the magnetic steel to fall out of the slot. Therefore, when manufacturing the rotor core, corresponding magnetic steel fixing measures must be taken to prevent the magnetic steel from loosening or falling out to ensure the normal operation of the motor. The block magnetic steel on the outer periphery of the core is easy to loosen or fall out in the radial direction in addition to the axial direction. Utility Model Content

[0003] The purpose of the utility model is to solve the problem mentioned in the prior art that the block magnetic steel on the periphery of the iron core is easy to loosen or fall out in the radial direction in addition to the axial direction.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A rotor structure with segmented magnets comprises a rotating shaft, an iron core and a clamping assembly, wherein the iron core is sleeved on the rotating shaft, and a plurality of mounting grooves are evenly arranged on the circumference of the iron core, and a plurality of magnetic blocks are installed in each of the mounting grooves. The iron core is provided with ventilation holes, and the ventilation holes are arranged between the rotating shaft and the magnetic blocks; the clamping assembly comprises a pressing piece 1 and a pressing piece 2 distributed at both ends of the iron core, and the pressing piece 1 and the pressing piece 2 cover the magnetic blocks at both ends of the iron core, and a locking piece connecting the pressing piece 1 and the pressing piece 2 is arranged on the iron core, and the edge of the pressing piece 1 extends upward to form a sleeve sleeved around the iron core, and a strip block corresponding to the mounting groove is arranged inside the sleeve, and the strip block is radially pressed against the magnetic steel to prevent loosening or falling out.

[0006] Preferably, a through slot for installing a locking piece is provided on the iron core, and connecting slots corresponding to the through slot are provided on the pressure piece 1 and the pressure piece 2. The locking piece includes a screw and a nut, and the pressure piece 1 and the pressure piece 2 are locked by the locking piece, thereby stabilizing the strip block.

[0007] Preferably, a limit plate is provided on the outer side of the mounting groove to prevent the magnetic block from falling out.

[0008] Preferably, the through slots correspond to the mounting slots one-to-one.

[0009] Preferably, the through groove extends to one side of the mounting groove and is connected to the mounting groove, and an extrusion block is arranged in the through groove, and the extrusion block and the strip block cooperate with each other inside and outside to fix the magnetic block in the radial direction.

[0010] Preferably, the extrusion block has extension plates extending to both sides, and an elastic sheet is connected to the through groove. The elastic sheet is in contact with the extension plates, so that the extrusion block moves toward the center, which is convenient for installing the magnetic block.

[0011] Preferably, an arc-shaped groove is provided on a side of the extension plate facing the screw rod for inserting the screw rod.

[0012] Preferably, the upper end of the arc-shaped groove is tapered.

[0013] Preferably, a limiting rod is connected to the elastic sheet, and one end of the limiting rod is inserted into the extension plate.

[0014] Preferably, a groove is formed at the upper end of the sleeve, and a protrusion corresponding to the groove extends from the edge of the second pressing piece, so that the connecting groove of the first pressing piece corresponds to the connecting groove of the second pressing piece.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The magnetic block is limited by the cooperation of the strip block, the extrusion block, the pressure piece 1 and the pressure piece 2 on the inner and outer sides and the upper and lower sides to prevent the magnetic block from loosening or falling out; the convex block makes it easier for the connecting groove of the pressure piece 1 to correspond with the connecting groove of the pressure piece 2, which is convenient for the subsequent connection of the locking piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the through slot and the extrusion block of the utility model.

[0020] Figure 3 It is a schematic diagram of the installation slot and the limiting plate of the utility model.

[0021] Figure 4 It is a schematic diagram of the elastic sheet and the limiting rod of the utility model.

[0022] Explanation of the figure numbers: 1. rotating shaft; 2. iron core; 21. mounting groove; 22. limiting plate; 23. ventilation hole; 24. through groove; 3. clamping assembly; 31. pressing piece 1; 32. pressing piece 2; 321. protrusion; 33. locking piece; 331. screw rod; 332. nut; 34. sleeve; 341. groove; 35. strip block; 36. extrusion block; 37. extension plate; 371. arc groove; 38. elastic sheet; 39. limiting rod; 4. magnetic block. DETAILED DESCRIPTION

[0023] The utility model is described in further detail below in conjunction with the accompanying drawings.

[0024] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be used for other implementation schemes, variations, improvements, equivalent schemes, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0025] Those skilled in the art should understand that, in the disclosure of the present invention, the directions or positions indicated by the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0026] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0027] See also Figure 1-Figure 4 A rotor structure with segmented magnets comprises a rotating shaft 1, an iron core 2 and a clamping assembly 3. The iron core 2 is sleeved on the rotating shaft 1. A plurality of mounting grooves 21 are evenly arranged on the circumference of the iron core 2. The mounting grooves 21 are located on the outer side of the iron core 2. A plurality of magnetic blocks 4 are installed in each mounting groove 21 on the outer side. A limiting plate 22 is arranged on the outer side of the mounting groove 21. The iron core 2 and the limiting plate 22 are integrally formed. One mounting groove 21 corresponds to two limiting plates 22. The limiting plates 22 prevent the magnetic blocks 4 from radially detaching. A plurality of magnetic blocks 4 are arranged longitudinally in one mounting groove. The mounting groove 21 is located on the outer side of the iron core 2, so as to facilitate observation of the outer side of the magnetic blocks 4 during maintenance. Ventilation holes 23 are arranged on the iron core 2, and the ventilation holes 23 are arranged between the rotating shaft 1 and the magnetic blocks 4.

[0028] The clamping assembly 3 includes a clamping piece 1 31 and a clamping piece 2 32 distributed at both ends of the iron core 2, and the clamping piece 1 31 and the clamping piece 2 32 cover the magnetic blocks 4 at both ends of the iron core 2. There are circular holes on the inner sides of the clamping piece 1 31 and the clamping piece 2 32, and the circular holes are used to expose the ventilation holes 23. The clamping piece 1 31 and the clamping piece 2 32 are both an integral whole, which is convenient for their respective installation and disassembly. A locking piece 33 connecting the clamping piece 1 31 and the clamping piece 2 32 is provided on the iron core 2, and a through groove 24 for installing the locking piece 33 is opened on the iron core 2. The clamping piece 1 31 and the clamping piece 2 32 are both provided with connecting grooves corresponding to the through groove 24, and the locking piece 33 includes a screw 331 and a nut 332. The screw 331 passes through the through groove 24 and the connecting groove, and then cooperates with the nut 332 to fix the clamping piece 1 31 and the clamping piece 2 32 at the two ends of the iron core 2, so that the clamping piece 1 31 and the clamping piece 2 32 limit the magnetic blocks 4 at both ends. The through slots 24 correspond to the mounting slots 21 one by one, and the connecting slots correspond to the through slots 24 one by one. The multiple locking pieces 33 make the pressing piece 1 31 and the pressing piece 2 32 more stable. The edge of the pressing piece 1 31 extends upward to form a sleeve 34 that is sleeved around the iron core 2. The sleeve 34 is provided with a strip block 35 corresponding to the mounting slot 21. The strip block 35 contacts the outer side of the magnetic block 4 and radially limits the magnetic block 4, making the magnetic block 4 stable. The upper end of the sleeve 34 is provided with a groove 341. The edge of the pressing piece 2 32 extends a convex block 321 corresponding to the groove 341. The convex block 321 facilitates the corresponding connection groove of the pressing piece 1 31 and the connection groove of the pressing piece 2 32, so as to facilitate the subsequent connection of the locking piece 33.

[0029] The through slot 24 extends to one side of the mounting slot 21 and is connected to the mounting slot 21. An extrusion block 36 is arranged in the through slot 24. The extrusion block 36 has an extension plate 37 extending to both sides. An elastic sheet 38 is connected in the through slot 24. The elastic sheet 38 is fixed to the iron core 2. The elastic sheet 38 contacts the extension plate 37. The elasticity of the elastic sheet 38 applies a force in the direction of the rotating shaft 1 to the extrusion block 36, so that the end of the extrusion block 36 enters the through slot 24, which is convenient for installing the magnetic block 4. The extension plate 37 is provided with an arc groove 37 on the side facing the screw 331. 1. The through groove 24 has another half arc groove 371. The extension plate 37 and the arc groove on the upper side of the through groove 24 form a plug hole for the screw rod 331 to be inserted. The upper end of the arc groove 371 is tapered, which facilitates the screw rod 331 to be pressed in. A limiting rod 39 is connected to the elastic sheet 38. One end of the limiting rod 39 is inserted into the extension plate 37. The limiting rod 39 is slidably connected to the extension plate 37. The through groove 24 limits the extension plate 37 to prevent it from being separated from the limiting rod 39. The limiting rod 39 is used to support the extrusion block 36 to prevent the extrusion block 36 from moving longitudinally. After the magnetic block 4 is installed, the pressure piece 1 31 and the sleeve 34 are first placed at the bottom and circumferential direction of the iron core 2 respectively. The pressure piece 1 31 limits the magnetic block 4 from the bottom, and the strip block 35 on the sleeve 34 radially limits the magnetic block 4. Then, the protrusion 321 of the pressure piece 2 32 is placed into the groove 341, and finally the screw rod 331 is inserted and fixed by the nut 332. When the screw rod 331 is inserted, the extension plate 37 is squeezed, so that the extension plate 37 and the squeezing block 36 move radially, squeezing the magnetic block 4 from the inside, and cooperating with the strip block 35 on the outside to stabilize the magnetic block 4. The strip block 35, the squeezing block 36, the pressure piece 1 31 and the pressure piece 2 32 cooperate to limit the magnetic block 4 on the inside and outside and the upper and lower sides to prevent the magnetic block 4 from loosening or falling out.

[0030] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed or modified in any way.

Claims

1. A rotor structure with segmented magnets, characterized in that: include: Rotating shaft (1); An iron core (2) is sleeved on the rotating shaft (1), a plurality of mounting grooves (21) are evenly arranged on the circumference of the iron core (2), a plurality of magnetic blocks (4) are installed in each of the mounting grooves (21), and a ventilation hole (23) is arranged on the iron core (2), and the ventilation hole (23) is arranged between the rotating shaft (1) and the magnetic block (4); A clamping assembly (3) comprises a first clamping piece (31) and a second clamping piece (32) distributed at both ends of an iron core (2), wherein the first clamping piece (31) and the second clamping piece (32) cover magnetic blocks (4) at both ends of the iron core (2), and the iron core (2) is provided with a locking piece (33) connecting the first clamping piece (31) and the second clamping piece (32), and the edge of the first clamping piece (31) extends upward to form a sleeve (34) sleeved around the iron core (2), and a strip block (35) corresponding to the mounting groove (21) is provided inside the sleeve (34).

2. A rotor structure with segmented magnets according to claim 1, characterized in that: The iron core (2) is provided with a through slot (24) for installing a locking member (33), the first pressing member (31) and the second pressing member (32) are both provided with connecting slots corresponding to the through slot (24), and the locking member (33) comprises a screw rod (331) and a nut (332).

3. A rotor structure with segmented magnets according to claim 1, characterized in that: A limiting plate (22) is provided on the outer side of the installation groove (21).

4. A rotor structure with segmented magnets according to claim 2, characterized in that: The through slots (24) correspond one to one with the mounting slots (21).

5. A rotor structure with segmented magnets according to claim 4, characterized in that: The through groove (24) extends toward one side of the mounting groove (21) and is in communication with the mounting groove (21), and an extrusion block (36) is disposed in the through groove (24).

6. A rotor structure with segmented magnets according to claim 5, characterized in that: The extrusion block (36) has an extension plate (37) extending to both sides, and an elastic sheet (38) is connected to the through slot (24), and the elastic sheet (38) is in contact with the extension plate (37).

7. A rotor structure with segmented magnets according to claim 6, characterized in that: An arc-shaped groove (371) is formed on a side of the extension plate (37) facing the screw rod (331).

8. A rotor structure with segmented magnets according to claim 7, characterized in that: The upper end of the arc-shaped groove (371) is tapered.

9. A rotor structure with segmented magnets according to claim 6, characterized in that: The elastic sheet (38) is connected to a limiting rod (39), and one end of the limiting rod (39) is inserted into the extension plate (37).

10. The rotor structure with segmented magnets according to claim 1, characterized in that: A groove (341) is formed at the upper end of the sleeve (34), and a protrusion (321) corresponding to the groove (341) extends from the edge of the second pressing piece (32).

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