Surface-mounted rotor structure

Abstract

The utility model relates to the technical field of motors, in particular to a surface-mounted rotor structure, which comprises a rotating shaft. The rotor core punching sections are arranged on the outer side of the rotating shaft in a sleeving manner, the number of the rotor core punching sections is at least two, and the rotor core punching sections are arranged in an attached manner in the axial direction of the rotating shaft; the two pressing plates are fixedly arranged on the outer side of the rotating shaft in a sleeving mode, and the two pressing plates serve as components used for fixing the rotor iron core punching sections in the axial direction of the rotating shaft; wherein the rotor core punching section comprises a rotor core, at least two magnetic steels and at least two stop blocks; the rotor core is sleeved on the outer side of the rotating shaft; the magnetic steels are fixedly attached to the outer side of the rotor iron core and are uniformly and circumferentially distributed around the axis of the rotor iron core; the baffle blocks are arranged between adjacent end parts of any two adjacent magnetic steels; and the stop blocks are used for filling a gap between the two corresponding magnetic steels. The product quality of the rotor structure is guaranteed, and the machining efficiency of the rotor structure is also guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, concretely relates to a surface mount type rotor structure. BACKGROUND

[0002] With the rapid development of motor technology, especially in the test, air conditioning industry and the field such as vehicle drive motor, the demand for motor high speed is increasing. To meet this demand, surface mount type rotor is gradually favored because of its unique structural advantages. Compared with the embedded rotor, the design of surface mount type rotor is more simple, and the production cost is lower.

[0003] However, although surface mount type rotor has many advantages, its manufacturing process still faces challenges. Traditionally, the assembly of such rotor is mainly completed by manual work, which leads to poor consistency between finished products. Especially when surface mounting the magnetic steel with magnetism, due to the characteristics of manual operation, the feasibility of process implementation and one-time qualification rate are lower than expected, and it is difficult to ensure high quality standards.

[0004] In addition, when surface mounting the magnetic steel with magnetism, the repulsive force between the magnetic steels not only hinders the movement of the magnetic steel being surface mounted, but also continuously repels the magnetic steel that has completed the surface mounting operation, resulting in the risk of falling out.

[0005] Therefore, how to solve the above-mentioned problems existing in the prior art has become the research and solution of the utility model. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a surface mount type rotor structure.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0008] A surface mount type rotor structure comprises:

[0009] A rotating shaft;

[0010] A rotor core segment is sleeved outside the rotating shaft and is arranged in at least two, and each rotor core segment is arranged along the axial direction of the rotating shaft;

[0011] A pressing plate is fixedly sleeved outside the rotating shaft and is arranged in two, and the two pressing plates are arranged at both ends of the rotating shaft as components for fixing each rotor core segment in the axial direction of the rotating shaft;

[0012] Among them, the rotor core segment comprises a rotor core, at least two magnetic steels and at least two stop blocks; the rotor core is sleeved outside the rotating shaft;

[0013] Each of the magnetic steels is fixedly attached to the outer side of the rotor core and evenly distributed around the axis of the rotor core.

[0014] Evenly distributed around the circumference.

[0015] The stopper is arranged between the adjacent ends of any two adjacent magnetic steels.

[0016] The stopper is used to fill the gap between the corresponding two magnetic steels.

[0017] In the above scheme, unlike the existing method of sticking all magnetic steels on the surface of the rotor at one time, the rotor core punching section is first manufactured and then the rotor structure is manufactured, which only needs to ensure that the magnetic steels are accurately installed in the predetermined area on the surface of the rotor core. By using this method of separate installation and final assembly, the installation effect of the magnetic steels can be ensured, the operability of the manufacturing process of the rotor structure can be improved, and the quality and product consistency of the rotor structure can be improved.

[0018] When all magnetic steels are stuck on the surface of the rotor at one time, the repulsive force between the magnetic steels in the axial and circumferential directions will cause great trouble in the assembly process, for example, the repulsive force can easily cause the magnetic steels to fall out. In the present application, only the repulsive force of the magnetic steels in the circumferential direction needs to be considered, and due to the separate installation, there are fewer magnetic steels near the installed magnetic steel, so the repulsive force is small, avoiding the above-mentioned falling out. When the final assembly is performed, even if the repulsive force is large due to the aggregation of the magnetic steels, the rotor core punching section has been formed, which restricts the magnetic steels and makes it difficult for them to fall out.

[0019] Through the above arrangement, the product quality of the rotor structure is ensured, and the processing efficiency and qualification rate of the rotor structure are also ensured.

[0020] The gap between the magnetic steels is filled by the stopper, which further ensures the quality and product consistency of the rotor structure.

[0021] In some cases, the magnetic steels are pasted on the outer surface of the rotor core by glue, and then a material that is heated to become liquid is used to fill the gap between the magnetic steels in the injection molding machine. The material solidifies to form a stopper, and thus the rotor core punching section is manufactured. Then, a predetermined number of rotor core punching sections are sequentially pressed onto the rotating shaft, and a pressing plate is used to fix these rotor core punching sections.

[0022] In a further technical solution, a groove structure is recessed in part of the outer circumferential surface of the rotor core.

[0023] The groove structure serves as a component for limiting the movement of the stopper in the circumferential direction of the rotor core.

[0024] The number of groove structures is the same as the number of stoppers.

[0025] The stop block is partially inserted into the groove structure in addition to being between the two magnetic steels, thereby limiting movement of the stop block in the circumferential direction of the rotor core.

[0026] In a further aspect, opposite ends of the groove structure penetrate the rotor core in the axial direction of the rotating shaft.

[0027] After the opposite ends of the groove structure penetrate the rotor core, the groove structure has three openings, which reduces the difficulty of processing the rotor core and improves the processing progress of the rotor structure.

[0028] In a further aspect, a protruding structure for limiting the magnetic steels in the circumferential direction is arranged on the outer circumferential surface of the rotor core.

[0029] The number of the protruding structures is greater than or equal to the number of the magnetic steels.

[0030] The protruding structures can position the magnetic steels during installation, ensuring that the magnetic steels are installed according to predetermined requirements and further improving the quality and qualification rate of the rotor structure.

[0031] In a further aspect, the number of the protruding structures is twice the number of the magnetic steels, and two protruding structures are arranged between the adjacent ends of any two adjacent magnetic steels.

[0032] This part can be used in conjunction with the groove structure, for example, as follows:

[0033] The openings of any one groove structure on the outer circumferential surface of the rotor core are arranged with one protruding structure on each side in the circumferential direction of the rotor core. During installation of the magnetic steels, the protruding structures can avoid blocking the above-mentioned openings of the groove structure, thereby avoiding affecting the use of the groove structure.

[0034] In a further aspect, the outer circumferential surface of each magnetic steel is on the same circumferential surface as the outer circumferential surface of each stop block.

[0035] The arrangement of this part can ensure the neatness and aesthetics of the appearance of the rotor structure.

[0036] The arrangement of this part also facilitates the product consistency of the rotor structure by setting easily achievable fixed standards, thereby reducing the processing difficulty.

[0037] The arrangement of this part also improves the space utilization rate, providing convenience for installation of the processed rotor structure. For example, when the rotor structure is installed in a compressor, it avoids occupying a large space in the compressor and especially avoids wasting space in the compressor.

[0038] In a further aspect, the outer circumferential surface of each rotor core segment is on the same circumferential surface as the outer circumferential surface of each pressure plate.

[0039] Through the arrangement, the appearance neatness and the aesthetic degree of the rotor structure are further improved, the product consistency of the rotor structure is further facilitated, and the space utilization is further improved.

[0040] Further, a carbon fiber layer is arranged between the two pressing plates.

[0041] The carbon fiber layer can improve the strength of the rotor structure, prevent the magnetic steel from being thrown out, and has higher reliability compared with the traditional silicon steel sheet.

[0042] Further, the outer circumferential surface of each pressing plate is arranged on the same circumferential surface as the outer circumferential surface of the carbon fiber layer.

[0043] Through the arrangement, the appearance neatness and the aesthetic degree of the rotor structure are further improved, the product consistency of the rotor structure is further facilitated, and the space utilization is further improved.

[0044] Further, the stopper is a plastic stopper.

[0045] It should be noted that if the stopper is made of metal material, due to the electric conduction characteristics of the metal material, eddy current will be generated in the stopper, thereby increasing the surface temperature of the magnetic steel and reducing the reliability of the magnetic steel.

[0046] Compared with the metal material used to separate the magnetic steel, the plastic stopper can effectively eliminate the heating phenomenon caused by the eddy current in the stopper, effectively reduce the temperature of the magnetic steel, reduce the failure risk of the magnetic steel, and improve the performance reliability of the rotor structure.

[0047] As for the "first", "second", etc. used in this paper, it does not mean to particularly indicate the order or the position, nor to limit the case, but only to distinguish the components or operations described with the same technical terms.

[0048] As for the "connection" or "positioning" used in this paper, it can mean that two or more components or devices are in direct physical contact with each other, or are indirectly in physical contact with each other, or can mean that two or more components or devices operate or act on each other.

[0049] As for the "contain", "include", "have", etc. used in this paper, they are all open terms, that is, they mean to include but not limited to.

[0050] As for the words (terms) used in this paper, except for special notes, they usually have the usual meaning of each word used in this field, in the content of the case, and in the special content. Some words used to describe the case will be discussed below or elsewhere in the specification to provide additional guidance for those skilled in the art on the description of the case.

[0051] As for the "front", "back", "up", "down", "left", "right" and the like used herein, they are directional words, which are only used to describe the positional relationship between structures in the case, and are not used to limit the specific direction of the protection scheme and actual implementation.

[0052] The working principle and advantages of the utility model are as follows: different from the mode that all the magnetic steels are pasted on the surface of the rotor at one time, the application is first made into a rotor core punching section and then made into a rotor structure, only the magnetic steels need to be accurately installed in the predetermined area on the surface of the rotor core, through the mode that the magnetic steels are first divided and then assembled, the installation effect of the magnetic steels is facilitated to improve the operability of the manufacturing process of the rotor structure, and then the quality and product consistency of the rotor structure are improved. When all the magnetic steels are pasted on the surface of the rotor at one time, the repulsion force between the adjacent magnetic steels in the axial and circumferential directions will cause great trouble to the assembly process, for example, the repulsion force is easy to cause the magnetic steels to fall off and fly out. In the application, only the repulsion force of the magnetic steels from the circumferential direction needs to be paid attention to, and due to the reason of the divided assembly, there are fewer magnetic steels near the single magnetic steel during the installation of the single magnetic steel, so that the repulsion force is small, and the above-mentioned falling and flying out situation is avoided. When the assembly is carried out, even if the repulsion force is large due to the aggregation of the magnetic steels, the rotor core punching section has been formed, and the magnetic steels are bound to make it difficult to fall off and fly out. BRIEF DESCRIPTION OF DRAWINGS

[0053] Figure 1 It is a structure schematic view of the rotor core punching section of the utility model embodiment;

[0054] Figure 2 It is a structure schematic view of the rotor core punching section of the utility model embodiment; Figure 1 It is an enlarged view of A in the figure;

[0055] Figure 3 It is a sectional view of the rotor core punching section of the utility model embodiment; Figure 1

[0056] Figure 4 It is a structure schematic view of the rotor core punching section of the utility model embodiment assembled on the rotating shaft;

[0057] Figure 5 It is a structure schematic view of the surface-mounted rotor structure of the utility model embodiment;

[0058] Figure 6 It is a sectional view of the surface-mounted rotor structure of the utility model embodiment. Figure 5

[0059] In the above drawings: 1, rotating shaft; 2, rotor core punching section; 21, rotor core; 211, groove structure; 22, magnetic steel; 23, stop block; 3, pressing plate; 4, protruding structure; 5, carbon fiber layer. DETAILED DESCRIPTION

[0060] ​​The utility model will be further described below in combination with the drawings and embodiments:

[0061] Embodiments: the following will be with the figure and detailed description to the case for clear explanation, any person skilled in the art can be taught by the technology of the case, change and modification, it does not deviate from the spirit and scope of the case.

[0062] The language in this paper is only for describing specific embodiments, and is not intended to limit the case. The singular form such as "a", "this", "this", "this" and "the" is also used in this paper, which also includes the plural form.

[0063] Reference Figures 1-6 A surface-mounted rotor structure comprises:

[0064] The rotating shaft 1;

[0065] The rotor core segment 2 is sleeved on the outer side of the rotating shaft 1, and is provided as at least two, and each rotor core segment 2 is arranged along the axial direction of the rotating shaft 1;

[0066] The pressing plate 3 is fixedly sleeved on the outer side of the rotating shaft 1, and is provided as two, and the two pressing plates 3 are used as components for fixing each rotor core segment 2 in the axial direction of the rotating shaft 1;

[0067] Among them, the rotor core segment 2 includes rotor core 21, at least two magnetic steel 22 and at least two stop block 23;The rotor core 21 is sleeved on the outer side of the rotating shaft 1;

[0068] Each magnetic steel 22 is fixedly attached to the outer side of the rotor core 21, and is uniformly distributed around the axis of the rotor core 21;

[0069] The adjacent end portions of any two adjacent magnetic steels 22 are provided with the stop block 23;

[0070] The stop block 23 is used to fill the gap between the corresponding two magnetic steels 22.

[0071] Different from the existing method of pasting all magnetic steels 22 on the surface of the rotor at one time, the present application first makes the rotor core segment 2 and then makes the rotor structure, which only needs to ensure that the magnetic steel 22 is accurately installed on the predetermined area of the surface of the rotor core 21, and through the use of this way of separate assembly and general assembly, it is beneficial to ensure the installation effect of the magnetic steel 22, improve the operability of the manufacturing process of the rotor structure, and further improve the quality and product consistency of the rotor structure.

[0072] When all magnets 22 are glued to the rotor surface at once, the repulsive forces between adjacent magnets 22 in the axial and circumferential directions can cause significant problems during assembly. For example, the repulsive forces can easily cause magnets 22 to detach and fly off. In this application, at most, attention only needs to be paid to the repulsive forces from the circumferential direction of the magnets 22. Furthermore, due to the separate assembly, there are fewer magnets 22 near each individual magnet 22 being installed, resulting in smaller repulsive forces and preventing the aforementioned detachment and flying off. During final assembly, even if the repulsive forces are large due to the aggregation of magnets 22, the rotor core punch section 2 is already formed, which binds the magnets 22, making it difficult for them to detach and fly off.

[0073] The above settings ensure both the product quality of the rotor structure and its processing efficiency and pass rate.

[0074] By filling the gap between the magnets 22 with the stop block 23, the quality of the rotor structure and product consistency are further guaranteed.

[0075] In some embodiments, the magnets 22 are glued to the outer surface of the rotor core 21, and then the gaps between the magnets 22 are filled by a material that is heated and melted into liquid in an injection molding machine. After the material solidifies, it forms a block 23, thus making the rotor core punch 2. Subsequently, a predetermined number of rotor core punches 2 are pressed onto the rotating shaft 1 in sequence, and these rotor core punches 2 are fixed by a pressure plate 3.

[0076] In some embodiments, the inner surface of the rotor core 21 has a variable number of protrusions to transmit torque.

[0077] In some embodiments, the pressure plate 3 is configured as a rotating body structure.

[0078] It should be noted that many specific settings are adjusted according to the actual situation, such as the spacing between magnets 22 and the number of magnets 22, and no specific restrictions are imposed here.

[0079] See Figure 1 , Figure 2 In this embodiment, a groove structure 211 is formed by recessing a portion of the outer peripheral surface of the rotor core 21.

[0080] The groove structure 211 serves as a component for restricting the movement of the stop 23 in the circumferential direction of the rotor core 21;

[0081] The number of groove structures 211 is the same as the number of stops 23.

[0082] A single groove structure 211 restricts a single stop 23.

[0083] The stopper 23 is inserted into the groove structure 211 in addition to being between the two magnetic steels 22, so as to limit the movement of the stopper 23 in the circumferential direction of the rotor core 21.

[0084] Referring to Figure 2 、 Figure 3 In the embodiment, the groove structure 211 penetrates the rotor core 21 at both ends in the axial direction of the rotating shaft 1.

[0085] After the groove structure 211 penetrates the rotor core 21 at both ends, the groove structure 211 has three openings, which reduces the processing difficulty of the rotor core 21 and improves the processing progress of the rotor structure.

[0086] Referring to Figure 2 In the embodiment, the rotor core 21 is provided with a protruding structure 4 on the outer circumferential surface.

[0087] The number of the protruding structure 4 is greater than or equal to the number of the magnetic steel 22.

[0088] In some embodiments, the protruding structure 4 is integrally arranged with the rotor core 21.

[0089] In some embodiments, the protruding structure 4 has the same thickness as the rotor core 21.

[0090] The embodiment is described by taking the number of the protruding structure 4 equal to the number of the magnetic steel 22, as follows:

[0091] Here, the magnetic steel 22 is provided in two, and after the two magnetic steels 22 are installed, any two adjacent ends of the two magnetic steels 22 are separated by the protruding structure 4, and the stopper 23 is clamped on the side of the protruding structure 4 away from the center of the rotor core 21.

[0092] The protruding structure 4 can be used to position the magnetic steel 22 during installation, so as to ensure that the magnetic steel 22 is installed according to the predetermined requirements, and further improve the quality and qualification rate of the rotor structure.

[0093] In the embodiment, the number of the protruding structure 4 is twice the number of the magnetic steel 22.

[0094] The embodiment can be used in cooperation with the groove structure 211, which is described by taking the groove structure 211 as an example, as follows:

[0095] The opening of any one groove structure 211 on the outer circumferential surface of the rotor core 21 is provided with a protruding structure 4 on both sides in the circumferential direction of the rotor core 21, so that the protruding structure 4 can avoid blocking the above-mentioned opening of the groove structure 211 during installation of the magnetic steel 22, thereby avoiding affecting the use of the groove structure 211.

[0096] Referring to Figure 3In the embodiment, the outer circumferential surface of each magnetic steel 22 is on the same circumferential surface as the outer circumferential surface of each stop block 23.

[0097] The arrangement of the embodiment can ensure the appearance neatness and aesthetics of the rotor structure.

[0098] The arrangement of the embodiment can also facilitate the product consistency of the rotor structure, and reduce the processing difficulty by setting an easily achieved fixed standard.

[0099] The arrangement of the embodiment also improves the space utilization, and facilitates the installation of the rotor structure after processing, such as avoiding occupying a large space in the compressor when the rotor structure is installed in the compressor, and especially avoiding wasting the space in the compressor.

[0100] In the embodiment, the outer circumferential surface of each rotor core punching section 2 is on the same circumferential surface as the outer circumferential surface of each pressing plate 3.

[0101] Through the arrangement of the embodiment, the appearance neatness and aesthetics of the rotor structure are further improved, the product consistency of the rotor structure is further facilitated, and the space utilization is further improved.

[0102] Referring to Figure 5 , Figure 6 In the embodiment, a carbon fiber layer 5 is arranged between the two pressing plates 3, and the carbon fiber layer 5 is sleeved outside each rotor core punching section 2.

[0103] In some embodiments, the carbon fiber layer 5 is wound by a carbon fiber structure.

[0104] The arrangement of the carbon fiber layer 5 can improve the strength of the rotor structure, and also prevent the magnetic steel 22 from being thrown out, and has higher reliability compared with the traditional silicon steel sheet.

[0105] Referring to Figure 5 In the embodiment, the outer circumferential surface of each pressing plate 3 is on the same circumferential surface as the outer circumferential surface of the carbon fiber layer 5.

[0106] Through the arrangement of the embodiment, the appearance neatness and aesthetics of the rotor structure are further improved, the product consistency of the rotor structure is further facilitated, and the space utilization is further improved.

[0107] In the embodiment, the stop block 23 is arranged as a plastic stop block.

[0108] It should be noted that if the stop block 23 is made of metal material, due to the electric conduction characteristics of the metal material, eddy current will be generated in the stop block 23, which will cause the surface temperature of the magnetic steel 22 to rise and reduce the reliability of the magnetic steel 22.

[0109] Compared with the magnetic steel 22 separated by a metal material, the plastic block 23 can effectively eliminate the heating phenomenon caused by eddy current in the block 23, effectively reduce the temperature of the magnetic steel 22, reduce the failure risk of the magnetic steel 22, and improve the performance reliability of the rotor structure.

[0110] In some embodiments, the block 23 is made of high-strength engineering plastic, such as polyether ether ketone or polyamide.

[0111] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A surface mount rotor construction characterized by: The utility model relates to a rotor core segment (2) is arranged on the shaft (1) outside, and the rotor core segment (2) is arranged to at least two, and each rotor core segment (2) is arranged along the axial direction of the shaft (1) and is adhered, and the pressing plate (3) is arranged to two, and the pressing plate (3) is arranged on the both ends of the shaft (1) and is used as the component for fixing each rotor core segment (2) in the axial direction. The utility model relates to a rotor core segment (2) is arranged on the shaft (1) outside, and the rotor core segment (2) is arranged to at least two, and each rotor core segment (2) is arranged along the axial direction of the shaft (1) and is adhered, and the pressing plate (3) is arranged to two, and the pressing plate (3) is arranged on the both ends of the shaft (1) and is used as the component for fixing each rotor core segment (2) in the axial direction. The rotor core segment (2) includes a rotor core (21), at least two magnetic steels (22) and at least two stop blocks (23), and the rotor core (21) is arranged outside the shaft (1). Each magnetic steel (22) is fixedly adhered outside the rotor core (21) and is uniformly distributed around the axis of the rotor core (21). Any two adjacent magnetic steels (22) are provided with the stop block (23) between the adjacent ends. The stop block (23) is used as a component for filling the gap between the two magnetic steels (22). The outer circumferential surface of the rotor core (21) is recessed to form a groove structure (211). The groove structure (211) is used as a component for limiting the movement of the stop block (23) in the circumferential direction of the rotor core (21).

2. A surface mount rotor construction according to claim 1 characterised in that: The number of the groove structure (211) is the same as that of the stop block (23). In the axial direction of the shaft (1), the opposite ends of the groove structure (211) penetrate the rotor core (21). The outer circumferential surface of the rotor core (21) is provided with a protruding structure (4) for limiting the magnetic steel (22) in the circumferential direction.

3. A surface mount rotor construction according to claim 2 characterised in that: The number of the protruding structure (4) is greater than or equal to the number of the magnetic steel (22).

4. A surface mount rotor construction as claimed in any one of claims 1 to 3, characterised in that: The number of the protruding structure (4) is twice the number of the magnetic steel (22), and two protruding structures (4) are arranged between the adjacent ends of any two adjacent magnetic steels (22). The outer circumferential surface of each magnetic steel (22) and the outer circumferential surface of each stop block (23) are on the same circumferential surface.

5. A surface mount rotor construction as set forth in claim 4, characterized in that: The outer circumferential surface of each rotor core segment (2) and the outer circumferential surface of each pressing plate (3) are on the same circumferential surface.

6. A surface mount rotor construction as set forth in any of claims 1-3, characterized by: A carbon fiber layer (5) is arranged between the two pressing plates (3), and the carbon fiber layer (5) is arranged outside each rotor core segment (2).

7. A surface mount rotor construction as set forth in any of claims 1-3, characterized by: The outer circumferential surface of each pressing plate (3) and the outer circumferential surface of the carbon fiber layer (5) are on the same circumferential surface.

8. A surface mount rotor construction as set forth in any of claims 1-3, characterized by: The stop block (23) is a plastic stop block.

9. A surface mount rotor construction as set forth in claim 8, characterized in that: ​ 10. A surface mount rotor construction as set forth in any of claims 1-3, characterized by: ​

Images