Combined rotor assembly

Abstract

The utility model provides a combined rotor assembly, and belongs to the technical field of machinery. The problem of poor stability in the prior art is solved. The combined rotor assembly comprises rotor units, a rotating shaft and covers, each rotor unit is in a disc shape, a through connecting hole is formed in the center of each rotor unit, the two rotor units are arranged on the rotating shaft in a front-back sleeving mode in the circumferential direction of the rotating shaft, the covers comprise the upper cover and the lower cover, and the upper cover and the lower cover are cylindrical. The upper end of the upper cover cap is provided with a first blocking edge protruding towards the inner side, and the lower end of the lower cover cap is provided with a second blocking edge protruding towards the inner side. The combined rotor assembly is high in stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a combined rotor assembly. Background Art

[0002] The working principle of the electronic rotor is based on the principle of electromagnetic induction. When the stator winding is energized, a rotating magnetic field is generated. This rotating magnetic field interacts with the rotor winding to generate an electromagnetic force, which causes the rotor to rotate. The current in the rotor winding also generates a magnetic field. The interaction of these two magnetic fields generates torque, which drives the rotor to rotate.

[0003] The existing electronic rotor usually includes a rotating shaft, a rotor unit and a cover. The middle part of the rotating shaft is penetrated and connected to the rotor unit, and the cover covers the rotor unit.

[0004] The rotor unit is composed of multiple parts. The cover not only covers the rotor unit, but also plays a role in positioning the various parts in the rotor unit. It can be seen that the cover has to achieve multiple functional purposes, which leads to the heavy-loaded cover being easily damaged prematurely and having poor stability.

[0005] Moreover, after assembly, the cover needs to be processed additionally, and the cover and the rotor unit need to be stably connected by bending or other processing. This connection method is cumbersome and cannot be disassembled, which makes subsequent maintenance operations more difficult. Summary of the invention

[0006] The purpose of the utility model is to provide a combined rotor assembly with compact structure and convenient assembly and disassembly in view of the above problems existing in the prior art.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] A combined rotor assembly comprises a rotor unit, a rotating shaft and a cover, characterized in that the rotor unit is disc-shaped and has a connecting hole penetrating the center of the rotor unit, the number of the above-mentioned rotor units is two, and the two rotor units are sleeved on the rotating shaft in the circumferential direction of the rotating shaft in a front-to-rear manner, and the cover comprises a cylindrical upper cover and a lower cover, the upper end of the upper cover has a first stopper protruding inwardly, and the lower end of the lower cover has a second stopper protruding inwardly, the lower end of the upper cover is fixedly connected to the inner end of the lower cover, and the first stopper abuts against the upper end of the rotor unit at the upper part, and the second stopper abuts against the lower end of the rotor unit at the lower part.

[0009] In the above-mentioned combined rotor assembly, the first retaining edge and the upper cover are an integral structure.

[0010] In the above-mentioned combined rotor assembly, the second retaining edge and the lower cover are an integrated structure.

[0011] In the above-mentioned combined rotor assembly, the rotor unit includes a body, an iron core and a retaining frame. The body is disc-shaped, and the number of the retaining frames and the iron cores is multiple, and the multiple retaining frames and the iron cores are evenly distributed on the outside of the body in the circumferential direction. The upper part of the retaining frame is snap-connected to the upper end of the body, and the inner side of the retaining frame is snap-connected to the outside of the body. An iron core is positioned between the retaining frame and the body, and another iron core is positioned between two adjacent retaining frames.

[0012] In the above-mentioned combined rotor assembly, the retaining frame includes a sheet-shaped connecting piece and a positioning piece. The number of the connecting pieces is two, and the two connecting pieces are symmetrically arranged at both ends of the positioning piece. The positioning piece protrudes from the side of the connecting piece. The positioning piece is snap-connected to the upper end of the main body, and the inner side of the connecting piece is snap-connected to the outer side of the main body.

[0013] In the combined rotor assembly, the inner side of the connecting piece has a protruding positioning edge along the axial direction of the body, the outer side of the body has a positioning groove matching the positioning edge, and the positioning edge is embedded in the corresponding positioning groove.

[0014] In the above combined rotor assembly, the positioning edge is located at the middle of the connecting piece.

[0015] In the above-mentioned combined rotor assembly, the cross section of the positioning edge is dovetail-shaped.

[0016] In the above-mentioned combined rotor assembly, the positioning edge, the connecting piece and the positioning piece are all integrated structures.

[0017] In the above-mentioned combined rotor assembly, the positioning plate is located at one end of the connecting plate, and the other end of the connecting plate has a protruding contact column. After the two rotor units are connected, the contact column in one rotor unit abuts against the end of the iron core in the other rotor unit.

[0018] In the above-mentioned combined rotor assembly, the first stop edge is snap-fitted to the positioning piece of one of the rotor units, and the second stop edge is snap-fitted to the positioning piece of the other rotor unit.

[0019] Compared with the prior art, the combined rotor assembly has an upper cover and a lower cover fixedly connected by glue, and the two rotor units can be stably connected to the rotating shaft under the action of the first and second stop edges. Although the structure of the rotor unit is relatively complex, the two rotor units are stably covered between the upper cover shell and the lower cover shell. Therefore, the entire rotor assembly has a compact structure and is easy to assemble.

[0020] At the same time, two adjacent rotor units are completely covered between the upper cover and the lower cover, and the structure is not only compact, but also convenient for loading and unloading between the upper cover and the lower cover, and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the combined rotor assembly.

[0022] Figure 2 It is a structural schematic diagram of the connection between the rotating shaft and the rotor unit in the combined rotor assembly.

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the rotor unit in the combined rotor assembly when viewed from above.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotor unit in the combined rotor assembly when viewed from above.

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the rotor unit in the combined rotor assembly.

[0026] In the figure, 1, body; 1a, positioning groove; 1b, contact surface one; 2, iron core; 2a, contact surface two; 3, retaining frame; 3a, positioning plate; 3a1, avoidance groove; 3a2, locking groove; 3b, connecting plate; 3b1, positioning edge; 4, rotating shaft; 5, upper cover; 5a, stop edge one; 6, lower cover; 6a, stop edge two. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0030] like Figure 1 and Figure 2 As shown, the combined rotor assembly includes a rotor unit, a rotating shaft 4 and a cover, wherein the rotor unit is disc-shaped and has a connecting hole penetrating the center of the rotor unit. The number of the above-mentioned rotor units is two, and the two rotor units are sleeved on the rotating shaft 4 in the circumferential direction of the rotating shaft 4 in the front and rear directions. The cover includes a cylindrical upper cover 5 and a lower cover 6, wherein the upper end of the upper cover 5 has a stop edge 1 5a protruding inwardly, and the lower end of the lower cover 6 has a stop edge 2 6a protruding inwardly, the lower end of the upper cover 5 is fixedly connected to the inner end of the lower cover 6, and the stop edge 1 5a abuts against the upper end of the rotor unit at the upper part, and the stop edge 2 6a abuts against the lower end of the rotor unit at the lower part.

[0031] The retaining edge 5a and the upper cover 5 are an integrated structure.

[0032] The second retaining edge 6a and the lower cover 6 are an integrated structure.

[0033] like Figure 3 As shown, the rotor core of the present invention comprises a body 1, a core 2 and a retaining frame 3. The body 1 is disc-shaped, the core 2 is connected to the edge of the body 1 through the retaining frame 3, and a plurality of cores 2 are evenly distributed on the outside of the body 1 in the circumferential direction.

[0034] like Figure 3 and Figure 4 and Figure 5 As shown, the number of the retaining frames 3 and the iron core 2 is several, and the several retaining frames 3 and the iron core 2 are evenly distributed on the outside of the main body 1 in the circumferential direction. The upper part of the retaining frame 3 is snap-fitted and connected to the upper end of the main body 1, and the inner side of the retaining frame 3 is snap-fitted and connected to the outside of the main body 1. An iron core 2 is positioned between the retaining frame 3 and the main body 1, and another iron core is positioned between two adjacent retaining frames 3.

[0035] The rotor core of the present invention can position one core 2 between the retainer 3 and the body 1, and another core 2 can be positioned outside the body 1 of two adjacent retainers 3. Therefore, under the action of the retainer 3, multiple cores 2 can be stably positioned and connected outside the body 1, and multiple cores 2 are evenly distributed circumferentially outside the body 1.

[0036] A relatively small number of retainers 3 effectively simplifies the structure of the entire rotor core.

[0037] The retaining frame 3 includes a sheet-shaped connecting piece 3b and a positioning piece 3a. There are two connecting pieces 3b, which are symmetrically arranged at both ends of the positioning piece 3a. The positioning piece 3a protrudes from the side of the connecting piece 3b. The positioning piece 3a is snap-fitted and connected to the upper end of the main body 1, and the inner side of the connecting piece 3b is snap-fitted and connected to the outer side of the main body 1.

[0038] The positioning piece 3a is snap-fitted to the upper end of the body 1, and the connecting piece 3b is snap-fitted to the outside of the body 1. Such a structure can not only position and connect the retainer 3 to the body 1, but also stably position the core 2 between the retainer 3 and the body 1.

[0039] Of course, the edge of another core 2 is positioned at the edge of the body 1 and the connecting piece 3b. Since the two sides of the core 2 have corresponding retainers 3, the outer side of the body 1 of the adjacent retainer 3 can eventually be positioned and connected to a core 2.

[0040] The inner side of the connecting piece 3b has a protruding positioning edge 3b1 along the axial direction of the main body 1, and the outer side of the main body 1 has a positioning groove 1a matching the positioning edge 3b1, and the positioning edge 3b1 is embedded in the corresponding positioning groove 1a.

[0041] The positioning edge 3b1 is located at the middle of the connecting piece 3b.

[0042] The cross section of the positioning edge 3b1 is dovetail-shaped.

[0043] After the positioning edge 3b1 is embedded in the positioning groove 1a, the connecting piece 3b can be stably connected to the outside of the main body 1.

[0044] Of course, the positioning edge 3b1 is located in the middle of the connecting piece 3b. Such a structure enables the connecting piece 3b to be stably buckled at the edge of the iron core 2.

[0045] The positioning edge 3b1, the connecting piece 3b and the positioning piece 3a are all integral structures.

[0046] The structure of the integral retaining frame is relatively compact, and the dovetail-shaped positioning edge 3 b 1 can ensure that the connecting piece 3 b is stably connected to the body 1 .

[0047] A planar contact surface 1b is formed between two adjacent positioning grooves 1a on the outer side of the body 1, and a planar contact surface 2a is formed on the inner side of the iron core 2. The contact surface 1b maintains surface contact with the contact surface 2a.

[0048] After the contact surface 1 b is matched and connected with the contact surface 2 a , the iron core 2 can be stably connected to the outside of the body 1 .

[0049] The outer edge of the positioning piece 3a has a concave escape groove 3a1, and the upper end of the iron core 2 located in the retaining frame 3 is partially exposed from the escape groove 3a1.

[0050] The avoidance groove 3a1 has two functions:

[0051] First, reduce the material consumption of the cage 3;

[0052] Second, the core 2 can be exposed from the retaining frame 3 as much as possible.

[0053] The positioning piece 3a has a locking groove 3a2 matching the upper end of the iron core 2, and the upper end of the iron core 2 is embedded in the locking groove 3a2.

[0054] After the upper end of the iron core 2 is inserted into the positioning groove 3a2 of the positioning plate, the upper end of the iron core 2 can be stably fixedly connected to the retaining frame 3.

[0055] The outer side of the iron core 2 is arc-shaped and the outer side of the retainer 3 and the outer side of the iron core 2 have a smooth transition.

[0056] This can appropriately improve the structural compactness of the entire rotor core.

[0057] The novel rotor core can not only position one core between the retaining frame and the body, but also position another core between adjacent retaining frames. Therefore, the number of retaining frames is reduced in disguise, the structure of the entire rotor core is simplified, the loading and unloading thereof is facilitated, and the stability thereof is relatively high.

[0058] At the same time, a relatively small number of retainers can appropriately improve the structural compactness of the entire rotor core and has a high use value.

[0059] In this combined rotor assembly, since the upper cover and the lower cover are fixedly connected by glue, the two rotor units can be stably connected to the rotating shaft under the action of the first and second stop edges. Although the structure of the rotor unit is relatively complex, the two rotor units are stably covered between the upper cover shell and the lower cover shell. Therefore, the entire rotor assembly has a compact structure and is easy to assemble.

[0060] At the same time, two adjacent rotor units are completely covered between the upper cover and the lower cover, and the structure is not only compact, but also convenient for loading and unloading between the upper cover and the lower cover, and has high practical value.

[0061] In this embodiment, the positioning piece 3a is located at one end of the connecting piece 3b, and the other end of the connecting piece 3b has a protruding contact column 7. After the two rotor units are connected, the contact column 7 in one rotor unit abuts against the end of the iron core 2 in the other rotor unit.

[0062] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.

[0064] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.

Claims

1. A combined rotor assembly, comprising a rotor unit, a rotating shaft and a cover, characterized in that: The rotor unit is disc-shaped and has a penetrating connection hole in the center of the rotor unit. There are two rotor units, which are sleeved on the rotating shaft in the circumferential direction of the rotating shaft. The cover includes an upper cover and a lower cover in the shape of a cylinder. The upper cover has a first stopper protruding inward at the upper end, and the lower cover has a second stopper protruding inward at the lower end. The lower end of the upper cover is fixedly connected to the inner end of the lower cover, and the first stopper abuts against the upper end of the rotor unit at the upper part, and the second stopper abuts against the lower end of the rotor unit at the lower part.

2. The combined rotor assembly according to claim 1, characterized in that: The first stop edge and the upper cover are an integrated structure.

3. The combined rotor assembly according to claim 2, characterized in that: The second stop edge and the lower cover are an integrated structure.

4. The combined rotor assembly according to claim 3, characterized in that: The rotor unit includes a body, an iron core and a retaining frame. The body is disc-shaped. The retaining frames and the iron cores are both in a plurality. The retaining frames and the iron cores are evenly distributed on the outside of the body in the circumferential direction. The upper portion of the retaining frame is snap-connected to the upper end of the body, and the inner side of the retaining frame is snap-connected to the outside of the body. An iron core is positioned between the retaining frame and the body, and another iron core is positioned between two adjacent retaining frames.

5. The combined rotor assembly according to claim 4, characterized in that: The retaining frame includes a sheet-shaped connecting piece and a positioning piece. There are two connecting pieces, which are symmetrically arranged at both ends of the positioning piece. The positioning piece protrudes from the side of the connecting piece. The positioning piece is snap-connected to the upper end of the main body, and the inner side of the connecting piece is snap-connected to the outer side of the main body.

6. The combined rotor assembly according to claim 5, characterized in that: The inner side of the connecting piece is provided with a protruding positioning edge along the axial direction of the main body, and the outer side of the main body is provided with a positioning groove matching the positioning edge, and the positioning edge is embedded in the corresponding positioning groove.

7. The combined rotor assembly according to claim 6, characterized in that: The positioning edge is located at the middle of the connecting piece.

8. The combined rotor assembly according to claim 7, characterized in that: The cross section of the positioning edge is dovetail-shaped.

9. The combined rotor assembly according to claim 8, characterized in that: The positioning edge, the connecting piece and the positioning piece are all integrated structures.

10. The combined rotor assembly according to claim 9, characterized in that: The positioning piece is located at one end of the connecting piece, and the other end of the connecting piece has a protruding contact column. After the two rotor units are connected, the contact column in one rotor unit abuts against the end of the iron core in the other rotor unit.

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