Internal rotation motor rotor
By using a bracket assembly and a steel ring magnet structure in the rotor of the internal rotary motor instead of a traditional iron core, the problems of increased rotor weight and poor coaxiality are solved, resulting in a lighter and more stable rotor rotation.
Patent Information
- Application Number
- CN202422641411.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Because the rotor core and magnet support of an internal rotary motor need to be fastened to the shaft, the rotor weight increases, the coaxiality is not high, and more energy is consumed.
The bracket assembly includes a first bracket and a second bracket, which are connected to the rotating shaft by fasteners. A steel ring and magnets on the outer diameter surface are provided between the brackets. The magnets are equidistantly surrounded by the steel ring, replacing the traditional iron core. The first bracket and the second bracket are locked between the magnets to improve coaxiality.
The weight of the rotor was reduced, the coaxiality and structural stability of the rotor were improved, and the energy consumption during rotation was reduced.
Smart Images
Figure CN223514683U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electromechanical equipment technology, specifically to an internal rotary motor rotor. Background Technology
[0002] Drive motors include internal rotor motors and external rotor motors. In an internal rotor motor, the inner rotor rotates inside the motor while the outer stator is fixed. It has the advantages of compact structure, high speed, and high power density. In an external rotor motor, the outer rotor rotates on the outer layer of the motor while the inner stator is installed inside. It has the characteristics of high torque, good starting performance, and smooth operation.
[0003] Currently, in the structure of internal rotary motors, a rotating shaft is usually used to pass through the rotor core, and then the magnet bracket is fixed on the rotor core. The rotating shaft drives the rotor core to rotate, which in turn drives the magnets on the magnet bracket to rotate.
[0004] However, the rotor core and magnet bracket need to be connected to the shaft using fasteners. The installation of the rotor core and magnet bracket increases the weight of the internal rotary motor rotor, resulting in low coaxiality of the internal rotary motor rotor and greater energy consumption during rotation. Utility Model Content
[0005] Based on this, the purpose of this utility model is to provide an internal rotary motor rotor, which aims to solve the problem that the rotor core and magnet support need to be connected to the rotating shaft with fasteners, and the installation of the rotor core and magnet support increases the weight of the internal rotary motor rotor, resulting in low coaxiality of the internal rotary motor rotor and greater energy consumption during rotation.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an internal rotating motor rotor, the internal rotating motor rotor comprising a rotating shaft, a support assembly disposed on the rotating shaft, and a magnet assembly disposed on the support assembly;
[0007] The bracket assembly includes a first bracket and a second bracket respectively disposed at both ends of the rotating shaft. The first bracket and the second bracket are both connected to the rotating shaft by fasteners and are respectively snapped into both ends of the magnet assembly.
[0008] The magnet assembly includes a steel ring abutting between the first bracket and the second bracket, and a plurality of magnets disposed on the outer diameter surface of the steel ring, wherein the length of the magnets is equal to the length of the steel ring;
[0009] The magnets are equidistantly arranged around the outer diameter surface of the steel ring, and the first bracket and the second bracket are engaged between adjacent magnets.
[0010] In summary, the internal rotation motor rotor proposed in this utility model reduces the rotor's weight by replacing the traditional iron core with a steel ring positioned between the first and second supports and several magnets disposed on the outer diameter surface of the steel ring. Simultaneously, the first and second supports are bonded to the inner diameter surface of the steel ring and secured within the gaps between the magnets, improving the rotor's coaxiality and ensuring a tighter fit between the first and second supports and the magnets, thus enhancing the rotor's rotational coaxiality. Specifically, the support assembly includes a first and second support respectively located at both ends of the rotating shaft. Both the first and second supports are connected to the rotating shaft via fasteners to rotate with the shaft and are respectively secured at both ends of the magnet assembly. The magnet assembly includes a steel ring abutting between the first and second supports and several magnets disposed on the outer diameter surface of the steel ring, with the magnets having the same length as the steel ring. The magnets are equidistantly arranged around the outer diameter surface of the steel ring, and the first and second supports are secured between adjacent magnets.
[0011] According to one aspect of the above technical solution, the first bracket includes a first positioning surface for abutting against the steel ring, a first radial through hole and a first threaded hole for connecting the rotating shaft, and a plurality of first protruding teeth extending toward the magnet, the first protruding teeth being engaged in the gap between adjacent magnets.
[0012] According to one aspect of the above technical solution, the first bracket is provided with a first V-shaped annular groove at the end away from the first positioning surface, and the first V-shaped annular groove is bonded to the inner diameter surface of the steel ring.
[0013] According to one aspect of the above technical solution, the first bracket is provided with a first axial through hole in the middle, and a first end face groove is provided at the end away from the first V-shaped annular groove. The first axial through hole and the first threaded hole are connected.
[0014] According to one aspect of the above technical solution, the second bracket is provided with a second positioning surface for abutting against the steel ring, a second threaded hole for connecting the rotating shaft, and a magnet frame.
[0015] According to one aspect of the above technical solution, a plurality of second protruding teeth extend from one end of the magnet frame near the magnet, and the second protruding teeth correspond one-to-one with the first protruding teeth.
[0016] According to one aspect of the above technical solution, the second bracket is provided with a second axial through hole in the middle, a second V-shaped annular groove at one end away from the first positioning surface, and a second end face groove at one end away from the second V-shaped annular groove. The second axial through hole and the second threaded hole are connected.
[0017] According to one aspect of the above technical solution, the rotating shaft is provided with a first chamfer and a second chamfer, and the first chamfer and the second chamfer are respectively used to be clamped to the first bracket and the second bracket.
[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0020] Figure 1 This is a schematic diagram of the internal rotating motor rotor in one embodiment of the present invention;
[0021] Figure 2 This is a cross-sectional view of the rotor of the internal rotating motor in one embodiment of the present invention;
[0022] Figure 3 This is an exploded view of the internal rotating motor rotor in one embodiment of the present invention;
[0023] Figure 4 This is a schematic diagram of the structure of the rotating shaft in one embodiment of the present invention;
[0024] Figure 5 This is a schematic diagram of the structure of the first bracket in one embodiment of the present invention;
[0025] Figure 6 This is a cross-sectional view of the first bracket in one embodiment of the present invention;
[0026] Figure 7 This is a schematic diagram of the structure of the second bracket in one embodiment of the present invention;
[0027] Figure 8 This is a cross-sectional view of the second bracket in one embodiment of the present invention;
[0028] Figure 9 This is a schematic diagram of the magnet holder in one embodiment of the present invention;
[0029] Figure 10 This is a cross-sectional view of the magnet holder in one embodiment of the present invention.
[0030] Component symbol explanation in the attached diagram:
[0031] Shaft 100, first chamfer 110, second chamfer 120, bracket assembly 200, first bracket 210, first positioning surface 211, first radial through hole 212, first threaded hole 213, first protruding tooth 214, first V-shaped annular groove 215, first axial through hole 216, first end face groove 217, second bracket 220, second positioning surface 221, second threaded hole 222, second axial through hole 223, second end face groove 224, magnet frame 225, second protruding tooth 226, inner end face 227, side end face 228, second V-shaped annular groove 229, magnet assembly 300, steel ring 310, inner diameter surface 311, outer diameter surface 312, magnet 320, fastener 400. Detailed Implementation
[0032] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.
[0033] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions used herein are for illustrative purposes only and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
[0034] In this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items.
[0035] Please see Figures 1-10The diagram shows a schematic of an internal rotary motor rotor provided in one embodiment of the present invention. The internal rotary motor rotor includes a rotating shaft 100, a support assembly 200 disposed on the rotating shaft 100, and a magnet assembly 300 disposed on the support assembly 200, wherein:
[0036] To enable the bracket assembly 200 to drive the rotating shaft 100 to rotate, a first chamfer 110 and a second chamfer 120 are provided on the rotating shaft 100. The first chamfer 110 and the second chamfer 120 penetrate the rotating shaft 100 radially to mount the first bracket 210 and the second bracket 220, so that the rotating shaft 100 drives the bracket assembly 200 to rotate. The first bracket 210 and the second bracket 220 can be connected to the rotating shaft 100 by fasteners 400, by bonding, or by interference fit.
[0037] To replace the traditional method of mounting the iron core along the rotating shaft 100 and to reduce the weight of the rotor, this application uses a bracket assembly 200 to mount the magnet assembly 300, so that the rotating shaft 100 and the magnet assembly 300 can rotate through the bracket assembly 200. The bracket assembly 200 includes a first bracket 210 and a second bracket 220 located at both ends of the rotating shaft 100. Both the first bracket 210 and the second bracket 220 are connected to the rotating shaft 100 by fasteners 400 and are respectively secured at both ends of the magnet assembly 300.
[0038] To secure the magnet assembly 300 between the first bracket 210 and the second bracket 220, the first bracket 210 includes a first positioning surface 211 for abutting against the steel ring 310, a first radial through hole 212 and a first threaded hole 213 for connecting the rotating shaft 100, and a plurality of first protruding teeth 214 extending toward the magnet 320. A first V-shaped annular groove 215 is provided at one end of the first bracket 210 away from the first positioning surface 211, and the first V-shaped annular groove 215 is bonded to the inner diameter surface 311 of the steel ring 310. A first axial through hole 216 is provided in the middle of the first bracket 210, and a first end face groove 217 is provided at one end away from the first V-shaped annular groove 215. The first axial through hole 216 and the first threaded hole 213 are connected.
[0039] One end of the rotating shaft 100 with a first chamfer 110 passes through the first axial through hole 216 so that the first chamfer 110 is aligned with the first threaded hole 213. Since the first axial through hole 216 and the first threaded hole 213 are connected, the first radial through hole 212 is aligned with the first threaded hole 213. Therefore, fasteners 400 are sequentially inserted into the first radial through hole 212, the first threaded hole 213, and the first axial through hole 216. During the insertion process, the fasteners 400 are screwed into the first threaded hole 213 to connect the first bracket 210 and the rotating shaft 100 into one unit.
[0040] Furthermore, since the magnet assembly 300 is inserted into one end of the first V-shaped groove 215 of the first bracket 210, adhesive is applied to the first V-shaped groove 215 and the first positioning surface 211 for connection with the magnet assembly 300 and for interference fit with the magnet assembly 300. At the same time, dynamic balancing mud can be added to the first end face groove 217 to achieve the effect of increasing weight and dynamic balance.
[0041] Furthermore, the second bracket 220 is provided with a second positioning surface 221 for abutting against the steel ring 310, a second threaded hole 222 for connecting the rotating shaft 100, and a magnet holder 225. Several second protruding teeth 226 extend from the end of the magnet holder 225 near the magnet 320, with each second protruding tooth 226 corresponding to a first protruding tooth 214. The second bracket 220 has a second axial through hole 223 in the middle, a second V-shaped annular groove 229 at the end away from the first positioning surface 211, and a second end face groove 224 at the end away from the second V-shaped annular groove 229. The second axial through hole 223 communicates with the second threaded hole 222.
[0042] One end of the rotating shaft 100 with a second chamfer 120 is inserted into the second axial through hole 223 so that the second chamfer 120 is aligned with the second threaded hole 222. Since the second axial through hole 223 and the second threaded hole 222 are connected, a fastener 400 is sequentially inserted into the second threaded hole 222 and the second axial through hole 223. During the insertion process, the fastener 400 is screwed into the second threaded hole 222 to connect the second bracket 220 and the rotating shaft 100 into one unit.
[0043] Similarly, one end of the second V-shaped groove 229 passes through the magnet assembly 300. Therefore, adhesive is applied to the second V-shaped groove 229 and the second positioning surface 221 for connection with the magnet assembly 300 and for interference fit. Simultaneously, dynamic balancing putty can be added to the second end face groove 224 to achieve weight-adding dynamic balance. The end of the magnet 320 holder 225 away from the magnet assembly 300 has an inner end face 227 and a side end face 228. The diameter of the inner end face 227 is slightly larger than the outer diameter of the second end face groove 224, so that the magnet 320 holder 225 can be fitted onto the second bracket 220 and fixed by adhesive. Its side end face 228 is used to abut against the magnet assembly 300.
[0044] The magnet assembly 300 includes a steel ring 310 abutting between the first support 210 and the second support 220, and a plurality of magnets 320 disposed on the outer diameter surface 312 of the steel ring 310. The length of the magnets 320 is equal to the length of the steel ring 310. In this embodiment, the plurality of strip magnets 320 are equidistantly arranged around the outer diameter surface 312 of the steel ring 310 to form a first protruding tooth 214 and a second protruding tooth 226 between adjacent magnets 320. Since the first protruding tooth 214 and the second protruding tooth 226 correspond one-to-one, the magnet assembly 300 is driven to rotate by the first protruding tooth 214 and the second protruding tooth 226. Furthermore, the bonding between the inner diameter surface 311 of the steel ring 310 and the first V-shaped annular groove 215, the second V-shaped annular groove 229, the first positioning surface 211, and the second positioning surface 221 improves the connection strength and ensures the structural stability of the rotor. In addition, Kevlar aramid thread can be wrapped around the outer surface of magnet 320 and fixed to magnet 320 with adhesive to reduce the probability of magnet 320 falling off due to centrifugal force when the rotor rotates at high speed.
[0045] In summary, the internal rotation motor rotor proposed in this utility model reduces the rotor's weight by replacing the traditional iron core with a steel ring positioned between the first and second supports and several magnets disposed on the outer diameter surface of the steel ring. Simultaneously, the first and second supports are bonded to the inner diameter surface of the steel ring and secured within the gaps between the magnets, improving the rotor's coaxiality and ensuring a tighter fit between the first and second supports and the magnets, thus enhancing the rotor's rotational coaxiality. Specifically, the support assembly includes a first and second support respectively located at both ends of the rotating shaft. Both the first and second supports are connected to the rotating shaft via fasteners to rotate with the shaft and are respectively secured at both ends of the magnet assembly. The magnet assembly includes a steel ring abutting between the first and second supports and several magnets disposed on the outer diameter surface of the steel ring, with the magnets having the same length as the steel ring. The magnets are equidistantly arranged around the outer diameter surface of the steel ring, and the first and second supports are secured between adjacent magnets.
[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0047] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. An internal rotary motor rotor, characterized in that, The internal rotating motor rotor includes a rotating shaft, a support assembly disposed on the rotating shaft, and a magnet assembly disposed on the support assembly; The bracket assembly includes a first bracket and a second bracket respectively disposed at both ends of the rotating shaft. The first bracket and the second bracket are both connected to the rotating shaft by fasteners and are respectively snapped into both ends of the magnet assembly. The magnet assembly includes a steel ring abutting between the first bracket and the second bracket, and a plurality of magnets disposed on the outer diameter surface of the steel ring, wherein the length of the magnets is equal to the length of the steel ring; The magnets are equidistantly arranged around the outer diameter surface of the steel ring, and the first bracket and the second bracket are engaged between adjacent magnets.
2. The internal rotary motor rotor according to claim 1, characterized in that, The first bracket includes a first positioning surface for abutting against a steel ring, a first radial through hole and a first threaded hole for connecting a rotating shaft, and a plurality of first protruding teeth extending toward the magnet, the first protruding teeth being engaged in the gap between adjacent magnets.
3. The internal rotary motor rotor according to claim 2, characterized in that, The first bracket has a first V-shaped groove at the end away from the first positioning surface, and the first V-shaped groove is bonded to the inner diameter surface of the steel ring.
4. The internal rotary motor rotor according to claim 3, characterized in that, The first bracket has a first axial through hole in the middle, and a first end face groove at the end away from the first V-shaped annular groove. The first axial through hole and the first threaded hole are connected.
5. The internal rotary motor rotor according to claim 1, characterized in that, The second bracket is provided with a second positioning surface for abutting against the steel ring, a second threaded hole for connecting the rotating shaft, and a magnet bracket.
6. The internal rotary motor rotor according to claim 5, characterized in that, Several second protruding teeth extend from one end of the magnet holder near the magnet, and the second protruding teeth correspond one-to-one with the first protruding teeth.
7. The internal rotary motor rotor according to claim 6, characterized in that, The second bracket has a second axial through hole in the middle, a second V-shaped annular groove at one end away from the first positioning surface, and a second end face groove at the other end away from the second V-shaped annular groove. The second axial through hole and the second threaded hole are connected.
8. The internal rotary motor rotor according to claim 1, characterized in that, The rotating shaft is provided with a first chamfer and a second chamfer, which are used to be clamped to the first bracket and the second bracket, respectively.