A composite rotor core structure of a permanent magnet reluctance motor
Patent Information
- Application Number
- CN202522487191.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-24
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-11-24
AI Technical Summary
[0002]现有技术中，永磁磁阻电机转子铁芯一般都采用一体式结构，特别是大机座号，存在体积大、重量大，搬运困难，塞磁钢困难等问题，导致装配和运输效率不足，且磁钢拆卸维护成本较高
[0010]本实用新型的优点：结构设计合理，采用分体式设计，多层铁芯拼接，可有效提高磁钢的装配效率和连接可靠性，相比现有技术穿插磁钢装配方式，可减少涂胶不均及摩擦力对磁钢装配的阻碍，有效降低磁钢拆卸及维修成本。
Smart Images
Figure CN224890416U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a rotor core structure, specifically a composite rotor core structure for a permanent magnet reluctance motor. Background Technology
[0002] In the existing technology, the rotor core of permanent magnet reluctance motors generally adopts an integrated structure, especially for large frame sizes. This results in problems such as large size and weight, difficulty in handling, and difficulty in inserting magnets, leading to insufficient assembly and transportation efficiency, and high costs for disassembling and maintaining the magnets. Utility Model Content
[0003] This utility model proposes a composite rotor core structure for a permanent magnet reluctance motor, which aims to overcome the above-mentioned shortcomings of the existing technology, improve the assembly efficiency of magnets, and reduce the maintenance cost of magnets.
[0004] The technical solution of this utility model is a composite rotor core structure for a permanent magnet reluctance motor. The structure includes several layers of axially linearly distributed rotor core segment modules. Each rotor core segment module has end plates at both ends and is fixed by several circumferentially distributed screws. Each rotor core segment module is composed of several fan-shaped core units circumferentially spliced together. Adjacent fan-shaped core units are interconnected on their sides by dovetail grooves and convex strips with matching shapes. Each fan-shaped core unit has a through hole for the screws to pass through. The dovetail grooves and convex strips ensure reliable connection.
[0005] Preferably, each of the aforementioned sector-shaped iron core units is formed by interconnecting a first iron core layer, a second iron core layer, a third iron core layer, and a fourth iron core layer from the center outwards. The first iron core layer, the second iron core layer, the third iron core layer, and the fourth iron core layer form a magnetic reluctance groove for assembling ferrite magnets in pairs. The first iron core layer is U-shaped, the second and third iron core layers are H-shaped, and the fourth iron core layer is π-shaped. Dovetail grooves and protrusions are respectively provided in the middle of the two outer surfaces of the first iron core layer.
[0006] Preferably, the bottom sides of the first core layer are provided with slots, the ends of the two strip structures at the bottom of the second core layer are matched with the slots of the first core layer and connected to each other, and protrusions are evenly distributed along the inner side of the bottom strip structure of the second core layer, and the slots of the first core layer are provided with recesses that match the protrusions of the second core layer.
[0007] Preferably, the bottom sides of the second core layer are provided with slots, the ends of the two strip structures at the bottom of the third core layer are matched with the slots of the second core layer and connected to each other, and protrusions are evenly distributed along the inner side of the bottom strip structure of the third core layer, and the slots of the second core layer are provided with recesses that match the protrusions of the third core layer.
[0008] Preferably, the bottom sides of the third core layer are provided with slots, the ends of the two strip structures at the bottom of the fourth core layer are matched with the slots of the third core layer and connected to each other, and protrusions are evenly distributed along the inner side of the bottom strip structure of the fourth core layer. The slots of the third core layer are provided with recesses that match the protrusions of the fourth core layer, and the through hole for the screw to pass through is located in the center of the fourth core layer.
[0009] The four core layers are sequentially spliced together via slots and bosses, which facilitates magnet assembly and gluing. Replacing the magnet in case of a line failure is also easier than with ordinary structures, making it more maintainable.
[0010] The advantages of this utility model are: reasonable structural design, adopting a split design and multi-layer iron core splicing, which can effectively improve the assembly efficiency and connection reliability of magnets. Compared with the existing interlaced magnet assembly method, it can reduce the obstruction of magnet assembly by uneven glue application and friction, and effectively reduce the cost of magnet disassembly and maintenance. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the composite rotor core structure of the permanent magnet reluctance motor of this utility model.
[0012] Figure 2 yes Figure 1 A schematic diagram of the structure of the rotor core segmentation module.
[0013] Figure 3 yes Figure 2 A schematic diagram of the structure of the central sector-shaped iron core unit.
[0014] Figure 4 yes Figure 3 A schematic diagram of the explosion structure.
[0015] In the diagram, 100 is the rotor core segment module, 101 is the first core layer, 102 is the second core layer, 103 is the third core layer, 104 is the fourth core layer, 105 is the dovetail groove, 106 is the wire hole, 107 is the slot, 108 is the boss, 200 is the end plate, and 300 is the screw. Detailed Implementation
[0016] The present invention will be further described in detail below with reference to embodiments and specific implementation methods.
[0017] like Figure 1-4 As shown, a composite rotor core structure for a permanent magnet reluctance motor includes several layers of axially linearly distributed rotor core segment modules 100. The rotor core segment modules 100 are provided with end plates 200 at both ends and are fixed by several circumferentially distributed screws 300.
[0018] Each rotor core segment module 100 is composed of several fan-shaped core units spliced together circumferentially. The sides of adjacent fan-shaped core units are connected to each other by dovetail grooves 105 and convex strips that match the shape. Each fan-shaped core unit is provided with a through hole for the screw 300 to pass through.
[0019] The dovetail groove 105 and the raised rib ensure a reliable connection.
[0020] Each sector-shaped core unit is formed by interconnecting a first core layer 101, a second core layer 102, a third core layer 103, and a fourth core layer 104 from the center outwards. The first core layer 101, the second core layer 102, the third core layer 103, and the fourth core layer 104 form a magnetic reluctance groove for assembling ferrite magnets in pairs.
[0021] The first core layer 101 is U-shaped, the second core layer 102 and the third core layer 103 are H-shaped, and the fourth core layer 104 is π-shaped. Dovetail grooves and protrusions are respectively provided in the middle of the two outer sides of the first core layer 101, and slots 107 are respectively provided on both sides of the bottom of the first core layer 101. The ends of the two strip structures at the bottom of the second core layer 102 are matched with the shapes of the slots 107 of the first core layer 101 and are connected to each other. Bosses 108 are also evenly distributed along the inner side of the strip structure at the bottom of the second core layer 102. The slots 107 of the first core layer 101 are provided with recesses that match the shapes of the bosses 108 of the second core layer 102. Slots 107 are respectively provided on both sides of the bottom of the second core layer 102. The ends of the two strip structures at the bottom of the third core layer 103 are matched with the shapes of the second core layer 104 and are connected to each other. The slots 107 of layer 102 are shaped and connected to each other. Bosses 108 are evenly distributed along the inner side of the bottom strip structure of the third core layer 103. The slots 107 of the second core layer 102 have recesses that match the shape of the bosses 108 of the third core layer 103. Slots 107 are provided on both sides of the bottom of the third core layer 103. The ends of the two strip structures at the bottom of the fourth core layer 104 are shaped and connected to the slots 107 of the third core layer 103. Bosses 108 are evenly distributed along the inner side of the bottom strip structure of the fourth core layer 104. The slots 107 of the third core layer 103 have recesses that match the shape of the bosses 108 of the fourth core layer 104. A through hole for the screw 300 to pass through is located at the center of the fourth core layer 104.
[0022] Based on the above structure, the four core layers are spliced together sequentially through slots 107 and bosses 108, which facilitates the assembly and gluing of magnets. Replacing magnets in case of outgoing line failure is also more convenient than with ordinary structures, and the maintainability is higher.
[0023] All of the components described above are existing technologies, and those skilled in the art can use any model and existing design that can achieve their corresponding functions.
[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.
Claims
1. A composite rotor core structure for a permanent magnet reluctance motor, characterized in that, The rotor core segment module (100) includes several layers of axially linearly distributed rotor core segment modules (100). The rotor core segment module (100) has end plates (200) at both ends and is fixed by several screws (300) evenly distributed in the circumferential direction. Each rotor core segment module (100) is composed of several fan-shaped core units spliced together in the circumferential direction. The sides of adjacent fan-shaped core units are connected to each other by dovetail grooves (105) and convex strips with matching shapes. Each fan-shaped core unit has a through hole for the screws (300) to pass through.
2. The composite rotor core structure of a permanent magnet reluctance motor as described in claim 1, characterized in that, Each of the aforementioned sector-shaped iron core units is formed by interconnecting a first iron core layer (101), a second iron core layer (102), a third iron core layer (103), and a fourth iron core layer (104) from the center outwards. The first iron core layer (101), the second iron core layer (102), the third iron core layer (103), and the fourth iron core layer (104) form a magnetic reluctance groove for assembling ferrite magnets in pairs. The first iron core layer (101) is U-shaped, the second iron core layer (102) and the third iron core layer (103) are H-shaped, and the fourth iron core layer (104) is π-shaped. Dovetail grooves and protrusions are respectively set in the middle of the two outer sides of the first iron core layer (101).
3. The composite rotor core structure of a permanent magnet reluctance motor as described in claim 2, characterized in that, The first core layer (101) has slots (107) on both sides of its bottom. The ends of the two strip structures at the bottom of the second core layer (102) are matched with the slots (107) of the first core layer (101) and connected to each other. Bosses (108) are evenly distributed along the inner side of the strip structure at the bottom of the second core layer (102). The slots (107) of the first core layer (101) have recesses that match the shape of the bosses (108) of the second core layer (102).
4. The composite rotor core structure of a permanent magnet reluctance motor as described in claim 2, characterized in that, The second core layer (102) has slots (107) on both sides of its bottom. The ends of the two strip structures at the bottom of the third core layer (103) are matched with the slots (107) of the second core layer (102) and connected to each other. Bosses (108) are evenly distributed along the inner side of the strip structure at the bottom of the third core layer (103). The slots (107) of the second core layer (102) have recesses that match the shape of the bosses (108) of the third core layer (103).
5. The composite rotor core structure of a permanent magnet reluctance motor as described in claim 2, characterized in that, The third core layer (103) has slots (107) on both sides of its bottom. The ends of the two strip structures at the bottom of the fourth core layer (104) are matched with the slots (107) of the third core layer (103) and connected to each other. Bosses (108) are evenly distributed along the inner side of the strip structure at the bottom of the fourth core layer (104). The slots (107) of the third core layer (103) have recesses that match the shape of the bosses (108) of the fourth core layer (104). A through hole for the screw (300) to pass through is set in the center of the fourth core layer (104).