CN111682666B - Single rotor disc applied to disc type motor - Google Patents
Single rotor disc applied to disc type motor Download PDFInfo
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- CN111682666B CN111682666B CN202010436545.2A CN202010436545A CN111682666B CN 111682666 B CN111682666 B CN 111682666B CN 202010436545 A CN202010436545 A CN 202010436545A CN 111682666 B CN111682666 B CN 111682666B
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- magnetic steel
- disc
- mounting
- mounting groove
- single rotor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2793—Rotors axially facing stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/12—Transversal flux machines
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a single rotor disc applied to a disc type motor, which comprises an installation disc, wherein a plurality of groups of installation holes distributed in a circumferential array mode are arranged in the installation disc, each group of installation holes is provided with an aligned magnetic steel pressing block, and magnetic steel is arranged between every two adjacent magnetic steel pressing blocks; the two sides of the magnetic steel pressing block are respectively provided with a pressing surface, and the two sides of the magnetic steel are respectively provided with a matching surface capable of matching with the pressing surface. The magnetic steel support is converted into the magnetic steel pressing blocks, the positioning accuracy among the magnetic steel pressing blocks is not related, and over-positioning cannot be formed, so that the accuracy requirement required by magnetic steel assembly can be reduced, the magnetic steel pressing blocks press the magnetic steel, the assembly stability and the assembly accuracy of the magnetic steel are ensured, and the installation efficiency of the single rotor disc is improved; compare the tradition and stamp out the rotor disk structure that the trench installed the magnet steel in the mounting disc, the mounting disc accessible of this application mills the mounting groove directly through the mode of milling, and it is more convenient to process.
Description
Technical Field
The invention belongs to the field of disk motors, and particularly relates to a single rotor disk applied to a disk motor.
Background
The disk motor is also called a disk motor, has the characteristics of small volume, light weight and high efficiency, the rotor and the stator of the common motor are sleeved inside and outside, the disk motor is thin, the stator adopts a flat substrate, and the rotor is usually permanent magnet magnetic steel or a rotor disk adhered with the permanent magnet magnetic steel. The existing split mounting type rotor disc structure has a plurality of problems.
For example, chinese patent document CN208158266U discloses a "fixing structure for magnetic steel in a rotor assembly of a disc motor" in 2018, 11/27, which includes a rotor disc, a plurality of magnetic steels, and a retainer, wherein an annular groove is formed on a surface of the rotor disc, notches are formed at intervals between outer rings of the annular groove, the plurality of magnetic steels are uniformly distributed in the annular groove formed on the surface of the rotor disc, gaps between adjacent magnetic steels align to the notches, the retainer includes a ring and a plurality of spokes, the plurality of spokes are radially arranged on an outer ring of the ring along the ring, the retainer is arranged on the surface of the rotor disc, the spokes are located in the gaps between adjacent magnetic steels, top ends of the spokes are located in the notches, and the ring is located in inner rings of the plurality of magnetic steels. The defects of the prior art are as follows: the magnetic steel is compressed and fixed through the retainer, the retainer needs positioning points at positions corresponding to the magnetic steel, the positioning points are too many, the fault tolerance rate is low, very high positioning accuracy is needed during installation, production and machining are not easy, if the requirement for the positioning accuracy is reduced, the allowance needed by the retainer is very large, the accuracy after the device is formed is affected, and the structural compactness of the rotor disc is affected.
Disclosure of Invention
Based on the problems, the invention provides the single rotor disc applied to the disc motor, which can conveniently finish the installation of the magnetic steel, reduce the positioning precision requirement during the assembly of the rotor disc and improve the assembly efficiency.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
a single rotor disc applied to a disc type motor comprises a mounting disc, wherein a plurality of groups of mounting holes distributed in a circumferential array are arranged in the mounting disc, each group of mounting holes is provided with an aligned magnetic steel pressing block, and magnetic steel is arranged between every two adjacent magnetic steel pressing blocks; the two sides of the magnetic steel pressing block are respectively provided with a pressing surface, and the two sides of the magnetic steel are respectively provided with a matching surface capable of matching with the pressing surface.
The magnetic steel support is converted into the magnetic steel pressing blocks, the positioning accuracy between the magnetic steel pressing blocks is not related, and over-positioning cannot be formed, so that the accuracy requirement required by magnetic steel assembly can be reduced, the magnetic steel pressing blocks press the magnetic steel, the assembly stability and the assembly accuracy of the magnetic steel are ensured, and the installation efficiency of the single rotor disc is improved; compared with the traditional rotor disc structure for installing the magnetic steel by punching the slot position in the installation disc, the installation disc can directly mill the installation groove in a milling mode, and the installation disc is more convenient to process; the magnetic steel is pressed in the mounting disc through the magnetic steel pressing block, when the rotor disc rotates, the magnetic steel generally bears radial force, the stress of the magnetic steel can be transmitted to the magnetic steel pressing block, the magnetic steel pressing block and the magnetic steel are good in consistency, and the structural compactness of the rotor disc is improved.
Preferably, an annular mounting groove is formed in the mounting disc, the inner edge and the outer edge of the mounting groove are respectively provided with an annular convex edge protruding upwards, and the mounting groove is formed by milling. Compared with the traditional rotor disc structure for installing the magnetic steel by punching the slot position in the installation disc, the installation disc can directly mill the installation groove in a milling mode, and the installation disc is more convenient to process and produce; the compressing surface and the matching surface are matched to compress tightly, the limiting of each direction of the magnetic steel is completed through the inclined plane and the inner ring and the outer ring of the mounting groove, and the mounting efficiency of the magnetic steel is improved.
Preferably, the pressing surface is an inclined plane, and the outer end of the matching surface is provided with a section perpendicular to the side surface of the magnetic steel. The inclined pressing surface is convenient to manufacture, the force during pressing is stable and reliable, the edge is not easy to damage, the stress at the end part of the magnetic steel is reduced through the cutting surface, and the magnetic steel is convenient to form.
Preferably, the pressing surface is a bent stepped surface. The end face matching precision requirement after the magnetic steel pressing block and the magnetic steel are matched is low, and the magnetic steel cannot move in the magnetic steel pressing block even if machining errors exist, so that the magnetic steel pressing block is more beneficial to assembly and high in stability.
Preferably, the shape of the inner ring of the mounting groove is a regular polygon, and the magnetic steel pressing block is opposite to the convex angle of the inner ring of the mounting groove; one end of the magnetic steel pressing block facing the inner ring of the mounting groove is planar. Therefore, the inner end edge of the magnetic steel can be set to be a plane shape which is attached to the edge of the inner ring of the mounting groove, and the outer end edge of the magnetic steel is arc-shaped, so that the magnetic steel can be automatically restrained at a certain position and cannot move randomly after being mounted in the mounting groove, and then the magnetic steel pressing block structure is pressed, and the mounting efficiency of the rotor disc is improved; another benefit is that there is the gap between magnet steel briquetting and the mounting groove, and the gap is as the wind channel, improves the heat-sinking capability of rotor dish.
Preferably, the single group of mounting holes comprise two threaded holes, and the magnetic steel pressing block is connected with the mounting holes through screws. The number of the threaded holes that the mounting hole includes can set up to 1, 2 arbitrary integer numbers such as in theory, sets up two benefits and lies in can forming symmetrical pressure to the magnet steel briquetting, and the influence to the mounting disc is little simultaneously, avoids influencing the intensity of mounting disc because the number of threaded hole is too much.
Preferably, the magnetic steel comprises a plurality of blocks, and the blocks are bonded and formed. The piecemeal can be 5, 6 pieces etc. adopt the mode of piecemeal to reduce the inside electric eddy current of magnet steel to reduce calorific capacity, increase life.
Preferably, a plurality of gear strips protruding outwards are arranged in the pressing surface. The rack piece forms an outward-protruding elastic structure, when the magnetic steel pressing block and the magnetic steel have a gap due to machining errors, the magnetic steel pressing block can be pressed tightly through the rack piece, the magnetic steel moving caused by the gap is avoided, and the installation and matching precision of the magnetic steel is improved.
Preferably, the rack pieces on the pressing surface are arranged in parallel, and the distance between adjacent rack pieces on the pressing surface is equal to the width of the rack pieces. Every rack piece just can laminate completely on the face that compresses tightly, and the rack piece can not disturb the compact strip effect, guarantees the reliability of the face that compresses tightly effect.
In conclusion, the beneficial effects of the invention are as follows: the magnetic steel can be conveniently installed, the positioning precision requirement during the rotor disc assembling is reduced, and meanwhile, the assembling precision can be ensured; after the magnetic steel is arranged in the mounting groove, the magnetic steel is automatically restrained at a certain position and cannot move randomly, and then a magnetic steel pressing block structure is pressed, so that the mounting efficiency of the rotor disc is improved; and a gap between the magnetic steel pressing block and the mounting groove is used as an air channel, so that the heat dissipation capacity of the rotor disc is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an exploded view of a first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the magnetic steel in fig. 2.
Fig. 4 is a schematic structural diagram of the magnetic steel compact in fig. 2.
Fig. 5 is a schematic structural diagram of a magnetic steel compact according to a second embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a magnetic steel compact according to a third embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a magnetic steel compact according to a fourth embodiment of the present invention.
Wherein: the mounting disc 1 is mounted in the groove 11, the ring 12 is mounted in the hole 13, the magnet press block 2 is mounted in the hole 14, the rack plate 2 is pressed on the surface 21, the magnet press block 22 is mounted on the surface 31, and the screw 4 is cut off on the section 32.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
In the case of the example 1, the following examples are given,
as shown in fig. 1 to 4, the single rotor disc applied to the disc motor includes a mounting disc 1, a circular mounting groove 11 is formed in the mounting disc 1, convex annular flanges are respectively formed at inner and outer edges of the mounting groove 11, an inner ring 12 of the mounting groove 11 is in a regular polygon shape, and an outer ring 13 of the mounting groove 11 is in a circular shape. The mounting groove 11 can be directly formed by cylindrical milling. The mounting disc 1 is internally provided with ten groups of mounting holes 14 distributed in a circumferential array manner, the mounting holes 14 are positioned in the mounting groove 11, and the array axis of the ten groups of mounting holes 14 is the axis of the mounting disc 1. Each group of mounting holes 14 is provided with an aligned magnetic steel pressing block 2, and each group of mounting holes 14 comprises two threaded holes which are positioned in the radial direction of the mounting disc 1. The magnetic steel pressing block 2 is connected with the mounting hole 14 through a screw 4. The screw 4 is a countersunk head screw. The magnetic steel pressing block 2 is provided with a taper hole matched with the countersunk head screw 4. A magnetic steel 3 is arranged between the adjacent magnetic steel pressing blocks 2; the magnetic steel 3 comprises five blocks, and the five blocks are sequentially bonded end to end. The two sides of the magnetic steel pressing block 2 are respectively provided with a pressing surface 21, and the pressing surfaces 21 are inclined planes, so that the cross section of the magnetic steel pressing block 2 is in an isosceles trapezoid shape. The pressing surface 21 is preferably inclined at an angle of 30-60 degrees, and the outer end of the pressing surface 21 is provided with a transition chamfer. The two sides of the magnetic steel 3 are respectively provided with a matching surface 31 which can match with the pressing surface 21. The outer end of the matching surface 31 is provided with a section surface 32 vertical to the bottom side surface of the magnetic steel 3. The magnetic steel pressing block 2 is opposite to a convex angle of an inner ring 12 of the mounting groove 11; the end, facing the inner ring 12 of the mounting groove 11, of the magnetic steel pressing block 2 is planar, the magnetic steel 3 is in the shape of an isosceles trapezoid with a long bottom edge being arc-shaped, the short bottom edge of the magnetic steel 3 is attached to the wall of the inner ring 12 of the mounting groove 11, and the long bottom edge of the magnetic steel 3 is attached to the wall of the inner ring 12 of the mounting groove 11. A gap is formed between the magnetic steel pressing block and the mounting groove and serves as an air channel, and the heat dissipation capacity of the rotor disc is improved. The magnetic steel 3 support is converted into the magnetic steel pressing blocks 2, the positioning accuracy between the magnetic steel pressing blocks 2 is not related, and over-positioning cannot be formed, so that the accuracy requirement required by magnetic steel 3 assembly can be reduced, the magnetic steel pressing blocks 2 press the magnetic steel 3, the assembly stability and the assembly accuracy of the magnetic steel 3 are ensured, and the installation efficiency of a single rotor disc is improved; compare the tradition and install magnet steel 3's rotor disk structure in the mounting disc 1 in punching press trench, mounting disc 1 accessible of this application mills the mode directly and mills mounting groove 11, and it is more convenient to process.
In the case of the example 2, the following examples are given,
as shown in fig. 5, embodiment 2 is different from embodiment 1 in that: the pressing surface 21 is a bent stepped surface. And therefore the mating face 31 is a stepped face that mates with the pressing face 21. The end face matching precision requirement after the steel pressing block and the magnetic steel 3 are matched is low, and even if machining errors exist, the magnetic steel 3 cannot move in the magnetic steel pressing block 2, so that the magnetic steel is more beneficial to assembly and high in stability.
In the case of the example 3, the following examples are given,
as shown in fig. 6, embodiment 3 is different from embodiment 1 in that: four protruding rack pieces 22 are arranged in the pressing surface 21. The rack pieces 22 are of strip-shaped sheet structures, four rack pieces 22 are equal in size and are arranged in parallel, and the rack pieces 22 are parallel to the bottom side face of the magnetic steel pressing block 2; the distance between adjacent rack bars 22 on the pressing surface 21 is equal to the width of the rack bars 22. The rack pieces 22 form a convex elastic structure, can be made of a material softer than the texture of the magnetic steel, and can assist the magnetic steel pressing block 2 to press through the gap between the bending filling pressing surface and the matching surface of the rack pieces 22 when the magnetic steel pressing block 2 and the magnetic steel 3 have a gap due to processing errors.
In the case of the example 4, the following examples are given,
as shown in fig. 7, embodiment 4 differs from embodiment 3 in that: the pressing surface 21 of embodiment 3 is an inclined surface, the pressing surface 21 of embodiment 4 is a step surface, and compared with the inclined surface, when the rack piece 22 is bent, the filling effect of the rack piece 22 in the step surface is better, which is more beneficial to the pressing of the magnetic steel pressing block 2.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A single rotor disc applied to a disc type motor comprises a mounting disc, wherein a plurality of groups of mounting holes distributed in a circumferential array are arranged in the mounting disc, each group of mounting holes is provided with an aligned magnetic steel pressing block, and magnetic steel is arranged between every two adjacent magnetic steel pressing blocks; the mounting disc is characterized in that an annular mounting groove is formed in the mounting disc, convex annular convex edges are respectively arranged on the inner edge and the outer edge of the mounting groove, the inner ring of the mounting groove is in a regular polygon shape, and one end, facing the inner ring of the mounting groove, of the magnetic steel pressing block is opposite to a convex angle of the inner ring of the mounting groove in the radial direction; one end of the magnetic steel pressing block facing the inner ring of the mounting groove is planar, the magnetic steel is in the shape of an isosceles trapezoid with a long bottom edge in an arc shape, the short bottom edge of the magnetic steel is attached to the inner ring wall of the mounting groove, and the long bottom edge of the magnetic steel is attached to the inner ring wall of the mounting groove; a gap is arranged between the magnetic steel pressing block and the mounting groove and serves as an air duct.
2. A single rotor disc for a disc motor as claimed in claim 1, wherein the pressing surface is an inclined plane, and the outer end of the mating surface is provided with a truncated surface perpendicular to the side surface of the magnetic steel.
3. A single rotor disc for a disc motor as claimed in claim 1, wherein the compression face is a curved stepped face.
4. A single rotor disc for a disc motor as claimed in claim 1, wherein the single set of mounting holes includes two threaded holes, and the magnetic steel pressing block is connected with the mounting holes by screws.
5. A single rotor disc for a disc motor as claimed in claim 1, wherein said magnetic steel comprises a plurality of segments, said plurality of segments being adhesively formed.
6. A single rotor disc for a disc motor as claimed in claim 1, 2 or 3, wherein a plurality of outwardly projecting rack segments are provided in the pressing surface.
7. A single rotor disc for a disc motor as claimed in claim 6, wherein the rack pieces on the pressing surface are arranged in parallel, and the distance between adjacent rack pieces on the pressing surface is equal to the width of the rack pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010436545.2A CN111682666B (en) | 2020-05-21 | 2020-05-21 | Single rotor disc applied to disc type motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010436545.2A CN111682666B (en) | 2020-05-21 | 2020-05-21 | Single rotor disc applied to disc type motor |
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| Publication Number | Publication Date |
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| CN111682666A CN111682666A (en) | 2020-09-18 |
| CN111682666B true CN111682666B (en) | 2022-04-15 |
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| CN202010436545.2A Active CN111682666B (en) | 2020-05-21 | 2020-05-21 | Single rotor disc applied to disc type motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112564346B (en) * | 2020-12-01 | 2021-10-29 | 东南大学 | High-torque-density axial magnetic field permanent magnet motor rotor structure and motor thereof |
| DE102021210640A1 (en) * | 2021-09-23 | 2023-03-23 | Rolls-Royce Deutschland Ltd & Co Kg | Magnetic device for an electric machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109639004A (en) * | 2019-01-24 | 2019-04-16 | 三门峡速达交通节能科技股份有限公司 | A kind of rotor of vehicle, disc type electric machine and disc type electric machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201252460Y (en) * | 2008-07-15 | 2009-06-03 | 吕义堂 | Improved structure of a brushless motor rotor |
| US20140152136A1 (en) * | 2012-12-03 | 2014-06-05 | Boulder Wind Power, Inc. | Devices and methods for magnetic pole retention in electromagnetic machines |
| CN208445371U (en) * | 2018-06-15 | 2019-01-29 | 核心驱动科技（金华）有限公司 | Motor and its rotor disk |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109639004A (en) * | 2019-01-24 | 2019-04-16 | 三门峡速达交通节能科技股份有限公司 | A kind of rotor of vehicle, disc type electric machine and disc type electric machine |
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| CN111682666A (en) | 2020-09-18 |
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