CN202651934U - Disc-type motor - Google Patents
Disc-type motor Download PDFInfo
- Publication number
- CN202651934U CN202651934U CN 201220335598 CN201220335598U CN202651934U CN 202651934 U CN202651934 U CN 202651934U CN 201220335598 CN201220335598 CN 201220335598 CN 201220335598 U CN201220335598 U CN 201220335598U CN 202651934 U CN202651934 U CN 202651934U
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- hole
- rotor frame
- described rotor
- permanent magnet
- stator
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The utility model relates to a disc-type motor, comprising at least a set of rotor assembly and a motor shaft. Each set of the set of rotor assembly comprises a disc-shaped rotor frame and even number of permanent magnets. The rotor frame is uniformly provided with even number of vias used to accommodate each permanent magnet at interval, and a central via. With the central via, the rotor frames are axially fixed on the motor shaft. The number of the permanent magnets is K times of the number of the vias of the rotor frame, wherein 2<=K<=4 and K is an integer. In each via of the rotor frame, K permanent magnets are axially fixed. The novel disc-type motor is advantaged by low eddy-current loss, high efficiency, high material utilization rate, etc. The disc-type motor is an energy-efficient motor, and cost would be correspondingly reduced.
Description
[
Technical field]
The utility model relates to the disc type electric machine that has axial magnetic circuit, particularly relates to the magnetic circuit parts of making disc type electric machine, relates in particular to the rotor body take magnetic material as feature in the disc type electric machine.
[
Background technology]
Disc type electric machine be 1821 by faraday's utility model, over more than 100 year, because the restriction of material and technological level fails to be further developed all the time.Last century four the fifties, disc type electric machine comes into one's own again, is used on the products such as hard disc of computer and tape recorders.Disc type electric machine is compared with the conventional radial magnetic circuit motor and is had that axial dimension is short, moving component is few and the electric efficiency advantages of higher, is particularly suitable for motor shaft has occasion from strict restriction to installation dimension.
The tradition magneto adopts the magnet radial poles structure, and it embeds winding in core lamination stack according to certain rules, but this motor axial dimension is long, is not suitable for installing in slim space.For this reason, to being of a size of target, change conventional motors radial magnetic circuit is that the disc type electric machine of axial magnetic circuit structure more and more is subject to people's attention with compressional axis.
Step by step development along with the disc type electric machine technology it is found that, the utilance of disc type electric machine is done to such an extent that be not very desirable always.The prior art disc type electric machine comprises at least one cover rotor assembly and motor shaft; Every cover rotor assembly all comprises again discoidal rotor frame and even numbered blocks permanent magnet; Even compartment of terrain is provided with and described permanent magnet through hole adaptive, equivalent amount on the described rotor frame, and which is provided with center through hole; By described center through hole, described rotor frame is axially fixed on the described motor shaft; Respectively this permanent magnet is fixed in each through hole of described rotor frame, N, S utmost point alternative arrangement; Permanent magnet in each through hole of rotor frame is a monoblock, in the situation that the permanent magnet equal volume, its air gap flux density is relatively low, and the magnetic flux utilance is low, and cost was also higher when the permanent magnet that a monoblock thickness is thicker was produced.
[
The utility model content]
The technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art part and a kind of disc type electric machine is provided, because the permanent magnet in each through hole of the rotor frame of prior art rotor assembly is divided into polylith along axial direction, this polylith permanent magnet is axially fixed in each through hole of rotor frame more together, the magnetic that is in the polylith permanent magnet in the same through hole can superpose mutually, can improve the air gap flux density of whole rotor assembly, the magnetic flux utilance of whole rotor assembly has also improved, thereby it is little to make disc type electric machine have eddy current loss, efficient height and stock utilization advantages of higher, be a kind of energy-efficient motor, cost also can correspondingly reduce.
The technical scheme that the utility model solve the technical problem employing is:
A kind of disc type electric machine is provided, comprises at least one cover rotor assembly and motor shaft; Every cover rotor assembly all comprises again discoidal rotor frame and even numbered blocks permanent magnet; Even compartment of terrain is provided with through hole and the center through hole that even number is used for holding each permanent magnet on the described rotor frame; By described center through hole, described rotor frame is axially fixed on the described motor shaft; The quantity of described permanent magnet be described rotor frame number of openings K doubly, 2≤K≤4 wherein, K is integer, i.e. K=2,3 or 4; Axial restraint has K piece permanent magnet in each through hole of described rotor frame.The axial width of K piece permanent magnet is less than or equal to the axial depth of the through hole of described rotor frame.
K=2, axial restraint has two permanent magnets in each through hole of described rotor frame.The axial width of two permanent magnets is less than or equal to the axial depth of the through hole of described rotor frame.Each through-hole wall of described rotor frame is provided with a circle boss, and by this boss, per two permanent magnets all are fixed in each through hole of described rotor frame, and are gapped between these two permanent magnets.
A kind of disc type electric machine also is provided, comprise hollow toroidal shell, two cover stator modules, with the adaptive rotor assembly of the two described stator modules of cover, two bearings and motor shaft; The described stator module of every cover all comprises discoidal stator fixed block, polylith stator core and is fixed on each stator winding on the every stator core, and the even compartment of terrain of polylith stator core is fixed on the stator fixed block; Described rotor assembly comprises discoidal rotor frame and even numbered blocks permanent magnet, even compartment of terrain is provided with through hole and the center through hole that even number is used for holding each permanent magnet on the described rotor frame, by described center through hole, described rotor frame is axially fixed on the described motor shaft; Two stator fixed blocks are axially fixed in respectively on the both ends of the surface of toroidal shell; By two bearings, described motor shaft is rotatably supported in the center through hole of two stator fixed blocks; The both ends of the surface of the rotor frame of described rotor assembly form with it two axial air gaps near the end face of each stator core of two described stator modules respectively abreast; The quantity of described permanent magnet be described rotor frame number of openings K doubly, 2≤K≤4 wherein, K is integer, i.e. K=2,3 or 4; Axial restraint has K piece permanent magnet in each through hole of described rotor frame.
Compare with prior art, the beneficial effect of the utility model disc type electric machine is:
Axial restraint has the polylith permanent magnet in each through hole of the rotor frame of rotor assembly, namely the permanent magnet in each through hole of the rotor frame of prior art rotor assembly is divided into polylith along axial direction, this polylith permanent magnet is axially fixed in each through hole of rotor frame more together, the magnetic that is in like this polylith permanent magnet in the same through hole can superpose mutually, can improve the air gap flux density of whole rotor assembly, the magnetic flux utilance of whole rotor assembly has also improved, thereby it is little to make disc type electric machine have eddy current loss, efficient height and stock utilization advantages of higher are a kind of energy-efficient motors; And every permanent magnet of the present utility model is thinner than the thickness of the used every permanent magnet of prior art, when producing this permanent magnet, temperature in the sintering furnace can correspondingly be hanged down, the material strontium of permanent magnet or barium ferrite be also easily control in sintering furnace, the production cost of every permanent magnet of the present utility model so also can correspondingly reduce, and the cost of whole disc type electric machine also can correspondingly reduce.
[
Description of drawings]
Fig. 1 is the axonometric projection schematic diagram after the utility model disc type electric machine preferred embodiment decomposes, and does not draw each stator winding among the figure;
Fig. 2 is the axonometric projection schematic diagram of disc type electric machine shown in Figure 1;
Fig. 3 is the overall structure orthographic projection vertical section schematic diagram of disc type electric machine shown in Figure 2, does not draw each stator winding among the figure;
Fig. 4 is the rotor assembly 30 of described disc type electric machine and the motor shaft 50 axonometric projection schematic diagram when being assembled together;
Fig. 5 is the rotor assembly 30 of described disc type electric machine and the axonometric projection schematic diagram after motor shaft 50 decomposition;
Fig. 6 is the rotor assembly 30 of described disc type electric machine and the motor shaft 50 orthographic projection vertical section schematic diagram when being assembled together;
Fig. 7 is the axonometric projection schematic diagram of rotor frame 31 of the rotor assembly 30 of described disc type electric machine;
Fig. 8 is that schematic diagram is looked on the orthographic projection left side of rotor frame 31 shown in Figure 7;
Fig. 9 is the A-A cross-sectional schematic of Fig. 8.
[embodiment]
Below in conjunction with each accompanying drawing the utility model is described in further detail.
Referring to Fig. 1 to Fig. 9, a kind of disc type electric machine is provided, comprise at least one cover rotor assembly 30 and motor shaft 50; Every cover rotor assembly 30 all comprises again discoidal rotor frame 31 and even numbered blocks permanent magnet 32; Even compartment of terrain is provided with through hole 315 and the center through hole 311 that even number is used for holding each permanent magnet 32 on the described rotor frame 31; By described center through hole 311, described rotor frame 31 is axially fixed on the described motor shaft 50; The quantity of described permanent magnet 32 be described rotor frame 31 through hole 315 quantity K doubly, 2≤K≤4 wherein, K is integer, i.e. K=2,3 or 4; Axial restraint has K piece permanent magnet 32 in each through hole 315 of described rotor frame 31.The axial width of K piece permanent magnet 32 is less than or equal to the axial depth of the through hole 315 of described rotor frame 31, that is to say, outmost each permanent magnet 32 is not higher than the both ends of the surface 319 of rotor frame 31, generally is concordant with these both ends of the surface 319.
Can on a circle inwall of each through hole 315 of described rotor frame 31, smear adhesive, each is organized each through hole 315 of putting into respectively together described rotor frame 31 after K piece permanent magnet 32 axially stacks up, by adhesive, each group K piece permanent magnet 32 is individually fixed on the circle inwall of each through hole 315 of described rotor frame 31.Smear before the adhesive, generally need to described rotor frame 31 and permanent magnet 32 be cleaned up with cleaning agent.For permanent magnet 32 is fixed in the through hole 315 of described rotor frame 31 fast, each permanent magnet 32 all be adhesively fixed on the through hole 315 of described rotor frame 31 interior after, they are put into baking box, the making of described rotor assembly 30 is finished in once baking typing.The adhesive of the usefulness that is adhesively fixed can be the adhesive that any use heatproof is not less than described electrical machine insulation grade heatproof level, the adhesive that the utility model uses is prior art, be not described in detail at this, its bonding operation also can be undertaken by the requirement of the relevant adhesive of prior art.
Referring to Fig. 1 to Fig. 9, above-mentioned K=2, axial restraint has two permanent magnets 32 in each through hole 315 of described rotor frame 31.The axial width of two permanent magnets 32 is less than or equal to the axial depth of the through hole 315 of described rotor frame 31, that is to say, each permanent magnet 32 is not higher than the both ends of the surface 319 of rotor frame 31, generally is concordant with these both ends of the surface 319.
Referring to Fig. 6 to Fig. 9, in order to make each permanent magnet 32 location and convenient fixing to be installed, and fixing more firm, each through hole 315 inwall of described rotor frame 31 are provided with a circle boss 3155, by this boss 3155, per two permanent magnets 32 all are fixed in each through hole 315 of described rotor frame 31, between these two permanent magnets 32 gapped 35, this gap 35 is the axial width of boss 3155 namely, the axial width of this boss 3155 generally can be designed to 0.25～0.55 millimeter, such as 0.35 millimeter or 0.50 millimeter; Can on circle inwall and boss 3155 two sides of each through hole 315, smear adhesive like this, per two permanent magnets 32 be sticked with glue agent be fixed on the circle inwall and boss 3155 of each through hole 315 of described rotor frame 31; Owing to area change gluing between every permanent magnet 32 and the rotor frame 31, just more firm after permanent magnet 32 is fixed on the rotor frame 31.
Principle of the present utility model is that the monoblock permanent magnet in each through hole 315 that is fixed in rotor frame of prior art is divided into the K piece along axial direction one, 2≤K≤4 wherein, K is integer, the axial stack of each group K piece permanent magnet is fixed in each through hole of rotor frame together, like this in the situation that the permanent magnet equal volume, the magnetic of K piece permanent magnet superposes mutually in each through hole 315, can improve air gap flux density, the magnetic flux utilance has improved greatly, and the cost when permanent magnet is produced also can correspondingly reduce; Such as K=2, the time, air gap flux density improves approximately about 20% than the air gap flux density of prior art structure.
The utility model can be made the disc type electric machine of single stator single rotor, two stator single rotor, single stator and double-rotor and many rotors multiple stators structure according to the quantity of stator and rotor, according to demand can free combination.
The specific embodiment of the disc type electric machine of a kind of pair of stator single rotor is as follows:
Referring to Fig. 1 to Fig. 9, a kind of disc type electric machine, comprise hollow toroidal shell 10, two cover stator modules 20, with the adaptive rotor assembly 30 of the described stator module of two covers 20, two bearings 40 and motor shaft 50; The described stator module 20 of every cover all comprises discoidal stator fixed block 22, polylith stator core 23 and is fixed on each stator winding (not shown in FIG.) on the every stator core 23, polylith stator core 23 even compartment of terrains are fixed on the stator fixed block 22, as shown in Figure 1, the described stator module 20 of every cover has 24 stator cores 23; Described rotor assembly 30 comprises discoidal rotor frame 31 and even numbered blocks permanent magnet 32, even compartment of terrain is provided with through hole 315 and the center through hole 311 that even number is used for holding each permanent magnet 32 on the described rotor frame 31, as shown in Figure 5, on the described rotor frame 31 10 through holes 315 are arranged; By described center through hole 311, described rotor frame 31 is axially fixed on the described motor shaft 50; Two stator fixed blocks 22 are axially fixed in respectively on the both ends of the surface of described toroidal shell 10; By two bearings 40, described motor shaft 50 is rotatably supported in the center through hole 222 of two stator fixed blocks 22; The both ends of the surface of the rotor frame 31 of described rotor assembly 30 form with it two axial air gaps 90 near the end face of each stator core 23 of two described stator modules 20 respectively abreast; The quantity of described permanent magnet 32 be described rotor frame 31 through hole 315 quantity K doubly, 2≤K≤4 wherein, K is integer, i.e. K=2,3 or 4; Axial restraint has K piece permanent magnet 32 in each through hole 315 of described rotor frame 31.The axial width of K piece permanent magnet 32 is less than or equal to the axial depth of the through hole 315 of described rotor frame 31.Such as K=2, axial restraint has two permanent magnets 32 in each through hole 315 of described rotor frame 31, and as shown in Figure 5, permanent magnet 32 has 20, and 10 through holes 315 are arranged on the rotor frame 31.The axial width of two permanent magnets 32 is less than or equal to the axial depth of the through hole 315 of described rotor frame 31.Each through hole 315 inwall of described rotor frame 31 are provided with a circle boss 3155, and by this boss 3155, per two permanent magnets 32 all are fixed in each through hole 315 of described rotor frame 31, between these two permanent magnets 32 gapped 35.When stator winding is fixed on the stator core 23, can use first the good stator winding of enamelled wire coiling, again stator winding be sticked with glue agent and be fixed on the stator core 23; Perhaps directly enamelled wire is wound on the stator core 23 and becomes stator winding, stick with glue again agent stator winding and stator core 23 is fixing.
Referring to Fig. 1 to Fig. 3, each piece stator core 23 is fixing with stator fixed block 22, can respectively adopt two screws 82 that each piece stator core 23 is fixed on the stator fixed block 22; In like manner can adopt many screws 81 that two stator fixed blocks 22 are axially fixed in respectively on the both ends of the surface of described toroidal shell 10.Fig. 1 to Fig. 3, label are 61 and 62 to be two bearings lids, by many screws 83, two bearings can be covered on 61, the 62 stator fixed blocks 22 that are axially fixed in respectively separately; Label be 70 be spring washer, can adjust the length of shaft of motor shaft 50.
Described rotor frame 31 can adopt non-magnetic stainless steel material to make.
Described permanent magnet 32 is neodymium iron boron high magnetic energy alloy or strontium or barium ferrite.
The above embodiment has only expressed preferred implementation of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim; Should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model; Therefore, all equivalents and modifications of doing with the utility model claim scope all should belong to the covering scope of the utility model claim.
Claims (10)
1. a disc type electric machine comprises at least one cover rotor assembly (30) and motor shaft (50); Every cover rotor assembly (30) all comprises again discoidal rotor frame (31) and even numbered blocks permanent magnet (32); The upper even compartment of terrain of described rotor frame (31) is provided with through hole (315) and the center through hole (311) that even number is used for holding each permanent magnet (32); By described center through hole (311), described rotor frame (31) is axially fixed on the described motor shaft (50); It is characterized in that:
The quantity of described permanent magnet (32) be described rotor frame (31) through hole (315) quantity K doubly, 2≤K≤4 wherein, K is integer; Axial restraint has K piece permanent magnet (32) in each through hole (315) of described rotor frame (31).
2. disc type electric machine according to claim 1 is characterized in that:
The axial width of K piece permanent magnet (32) is less than or equal to the axial depth of the through hole (315) of described rotor frame (31).
3. disc type electric machine according to claim 1 is characterized in that:
K=2, axial restraint has two permanent magnets (32) in each through hole (315) of described rotor frame (31).
4. disc type electric machine according to claim 3 is characterized in that:
The axial width of two permanent magnets (32) is less than or equal to the axial depth of the through hole (315) of described rotor frame (31).
5. disc type electric machine according to claim 3 is characterized in that:
Each through hole (315) inwall of described rotor frame (31) is provided with a circle boss (3155), by this boss (3155), per two permanent magnets (32) all are fixed in each through hole (315) of described rotor frame (31), between these two permanent magnets (32) gapped (35).
6. disc type electric machine comprises the toroidal shell (10), two cover stator modules (20) of hollow, rotor assembly (30), two bearings (40) and the motor shaft (50) adaptive with the two described stator modules of cover (20); The described stator module of every cover (20) all comprises discoidal stator fixed block (22), polylith stator core (23) and is fixed on each stator winding on the every stator core (23), and polylith stator core (23) evenly is fixed on the stator fixed block (22) compartment of terrain; Described rotor assembly (30) comprises discoidal rotor frame (31) and even numbered blocks permanent magnet (32), the upper even compartment of terrain of described rotor frame (31) is provided with through hole (315) and the center through hole (311) that even number is used for holding each permanent magnet (32), by described center through hole (311), described rotor frame (31) is axially fixed on the described motor shaft (50); Two stator fixed blocks (22) are axially fixed in respectively on the both ends of the surface of toroidal shell (10); By two bearings (40), described motor shaft (50) is rotatably supported in the center through hole (222) of two stator fixed blocks (22); The both ends of the surface of the rotor frame (31) of described rotor assembly (30) form with it two axial air gaps (90) near the end face of each stator cores (23) of two described stator modules (20) respectively abreast; It is characterized in that:
The quantity of described permanent magnet (32) be described rotor frame (31) through hole (315) quantity K doubly, 2≤K≤4 wherein, K is integer; Axial restraint has K piece permanent magnet (32) in each through hole (315) of described rotor frame (31).
7. disc type electric machine according to claim 6 is characterized in that:
The axial width of K piece permanent magnet (32) is less than or equal to the axial depth of the through hole (315) of described rotor frame (31).
8. disc type electric machine according to claim 6 is characterized in that:
K=2, axial restraint has two permanent magnets (32) in each through hole (315) of described rotor frame (31).
9. disc type electric machine according to claim 8 is characterized in that:
The axial width of two permanent magnets (32) is less than or equal to the axial depth of the through hole (315) of described rotor frame (31).
10. disc type electric machine according to claim 8 is characterized in that:
Each through hole (315) inwall of described rotor frame (31) is provided with a circle boss (3155), by this boss (3155), per two permanent magnets (32) are fixed in each through hole (315) of described rotor frame (31), between these two permanent magnets (32) gapped (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220335598 CN202651934U (en) | 2012-07-12 | 2012-07-12 | Disc-type motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220335598 CN202651934U (en) | 2012-07-12 | 2012-07-12 | Disc-type motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202651934U true CN202651934U (en) | 2013-01-02 |
Family
ID=47420975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220335598 Expired - Lifetime CN202651934U (en) | 2012-07-12 | 2012-07-12 | Disc-type motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202651934U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110506380A (en) * | 2017-03-22 | 2019-11-26 | 万络机电公司 | Including electromagnetic engine or generator with the rotor through magnetization configuration and the stator with concentric winding that include unit magnet |
| CN111934509A (en) * | 2020-07-02 | 2020-11-13 | 陈志涛 | Disc isopgnetic motor |
-
2012
- 2012-07-12 CN CN 201220335598 patent/CN202651934U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110506380A (en) * | 2017-03-22 | 2019-11-26 | 万络机电公司 | Including electromagnetic engine or generator with the rotor through magnetization configuration and the stator with concentric winding that include unit magnet |
| CN111934509A (en) * | 2020-07-02 | 2020-11-13 | 陈志涛 | Disc isopgnetic motor |
| CN111934509B (en) * | 2020-07-02 | 2024-06-14 | 陈志涛 | Disk-type isomagnetic motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |