CN112217324A - Improved structure of coreless motor - Google Patents
Improved structure of coreless motor Download PDFInfo
- Publication number
- CN112217324A CN112217324A CN202011175797.0A CN202011175797A CN112217324A CN 112217324 A CN112217324 A CN 112217324A CN 202011175797 A CN202011175797 A CN 202011175797A CN 112217324 A CN112217324 A CN 112217324A
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- China
- Prior art keywords
- rear end
- pcb
- coil
- motor
- end cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 13
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 3
- 238000004804 winding Methods 0.000 description 7
- XOMKZKJEJBZBJJ-UHFFFAOYSA-N 1,2-dichloro-3-phenylbenzene Chemical compound ClC1=CC=CC(C=2C=CC=CC=2)=C1Cl XOMKZKJEJBZBJJ-UHFFFAOYSA-N 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
-
- 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
- H02K1/2706—Inner rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/08—Insulating casings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Dc Machiner (AREA)
Abstract
The invention discloses an improved structure of a coreless motor, which comprises a shell, a silicon steel sleeve, a coil and a motor shaft, wherein a front end cover is arranged at the front end of the shell, a rear end cover is arranged at the rear end of the shell, bearings are respectively arranged at the inner sides of the front end cover and the rear end cover, a silicon steel sleeve is arranged at the inner side of the shell, a PCB (printed circuit board) support is arranged at the rear end of the silicon steel sleeve, a PCB is arranged at the inner side end of the PCB support, one side of the PCB is connected with a Hall sensor, the other side of the PCB is connected with a lead wire, the coil is arranged at the inner side of the silicon steel sleeve, rotor magnetic steel is arranged at the inner side end of the coil, a front balancing weight is arranged at the front end of the rotor magnetic steel, a rear balancing weight is arranged at the rear end of the rotor magnetic steel, the motor shaft is connected in the middle of the rotor magnetic steel in, the control and dragging characteristics that the iron core motor can not reach are possessed.
Description
Technical Field
The invention relates to the technical field of motors, in particular to an improved structure of a coreless motor.
Background
The hollow cup motor is characterized in that the coil like a cup is not provided with other supporting structures and is completely formed by winding a conducting wire, the coil is connected with a main shaft together through a connecting plate and a commutator, and a rotor is formed together. This connection plate is generally composed of plastic and epoxy. It has the functions of fixing wire and transmitting torque. The coil rotates in the gap between the magnet and the housing, thereby rotating the entire rotor.
The existing coreless motor adopts an iron core rotor structure, can form eddy current and cause electric energy loss, and has the disadvantages of large self weight and rotational inertia and large mechanical energy consumption loss, so that the running characteristic of the motor cannot be improved, and the control is inconvenient.
Disclosure of the invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an improved structure of a coreless motor, which solves the problems that the electrical energy loss caused by vortex can be formed because the existing coreless motor adopts an iron core rotor structure, the running characteristic of the motor cannot be improved and the control is inconvenient because the self weight and the rotational inertia are large and the mechanical energy loss is large.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the improved structure of the coreless motor comprises a housing, a silicon steel sleeve, a coil and a motor shaft, wherein a front end cover is arranged at the front end of the housing, a rear end cover is arranged at the rear end of the housing, bearings are arranged on the inner sides of the front end cover and the rear end cover, a silicon steel sleeve is arranged on the inner side of the housing, a PCB support is arranged at the rear end of the silicon steel sleeve, a PCB is mounted at the inner side end of the PCB support, one side of the PCB is connected with a Hall sensor, a lead is connected to the other side of the PCB, the coil is arranged on the inner side of the silicon steel sleeve, rotor magnetic steel is arranged at the inner side end of the coil, a front balancing weight is arranged at the front end of the rotor magnetic steel, a rear balancing weight is arranged at the rear end of the rotor magnetic steel, the motor shaft is connected in.
Preferably, the limiting ring is sleeved at the outer end of the motor shaft and is located between the bearing and the rear balancing weight.
Preferably, a wave-shaped pad is arranged between the rear end of the bearing and the inner side end of the rear end cover.
Preferably, the inner side end of the front end cover is fixedly bonded with insulating paper, and the insulating paper is in contact connection with the front end of the coil.
(III) advantageous effects
The invention has the following beneficial effects:
this coreless motor improves structure, through adopting no iron core rotor structure, has thoroughly eliminated the influence of the electric energy loss that leads to the fact because the iron core forms the vortex, simultaneously because its self weight and inertia reduce by a wide margin to reduce the mechanical energy consumption loss of rotor self, made the running characteristic of motor obtain very big improvement, not only possessed outstanding energy-conserving characteristics, more possessed the control and the dragging characteristic that the iron core motor can't reach.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure, a machine shell 1, a silicon steel sleeve 2, a coil 3, a PCB support 4, a PCB 5, a Hall sensor 6, a rear end cover 7, a bearing 8, a waveform pad 9, a lead wire 10, a limiting ring 11, a rear balancing weight 12, rotor magnetic steel 13, a front balancing weight 14, a motor shaft 15, a front end cover 16 and insulating paper 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a technical solution: the improved structure of the coreless motor comprises a shell 1, a silicon steel sleeve 2, a coil 3 and a motor shaft 15, wherein a front end cover 16 is arranged at the front end of the shell 1, a rear end cover 7 is arranged at the rear end of the shell 1, bearings 8 are arranged on the inner sides of the front end cover 16 and the rear end cover 7, the silicon steel sleeve 2 is arranged on the inner side of the shell 1, a PCB support 4 is arranged at the rear end of the silicon steel sleeve 2 and is convenient to position and install, a PCB 5 is installed at the inner side end of the PCB support 4, one side of the PCB 5 is connected with a Hall sensor 6, the other side of the PCB 5 is connected with a lead 10 and can be directly connected with a power supply, the coil 3 is arranged on the inner side of the silicon steel sleeve 2, rotor magnetic steel 13 is arranged at the inner side end of the coil 3, a front balancing weight 14 is arranged at the front end of the rotor magnetic steel 13, a rear balancing weight 12 is arranged at the, and the rear end of the rear balancing weight 12 is provided with a limiting ring 11.
The limiting ring 11 is sleeved at the outer end of the motor shaft 15, the limiting ring 11 is located between the bearing 8 and the rear balancing weight 12, and safety between the bearing 8 and the rear balancing weight 12 is limited.
And a waveform pad 9 is arranged between the rear end of the bearing 8 and the inner side end of the rear end cover 7, so that the shock absorption is realized, the stability is high, and the noise is low.
The inboard end bonding of front end housing 16 is fixed and is equipped with insulating paper 17, just insulating paper 17 contacts with the front end of coil 3 and is connected, and it is insulating antistatic, factor of safety is high.
The working principle is as follows: the motor winding is different from the winding of the traditional motor, adopts a distributed cross winding with the whole slot and the whole distance, the winding connection mode is generally star connection, and the silicon steel sheets are laminated into a silicon steel sleeve 2 to be matched with a winding coil 3, so that a stator component in the traditional sense is formed, the rotor magnetic steel 13 can be directly made into a cylinder shape according to the drawing and inserted into the winding coil 3, the internal space of the motor is greatly saved, and sufficient space is reserved for the arrangement of other components;
to power little (several watts to tens watts), small motor or the serious limited position of installation space, all can adopt the improved structure of coreless motor, the electromagnetic design of coreless motor improved structure is unanimous with the electromagnetic design of traditional motor, concrete structural configuration is different, but the technique of adoption is all unanimous, because the small of product, do not have sufficient space to go trompil on rear end cap 7, front end cap 16 and casing 1, so adopt fixed rear end cap 7 of laser welding's mode and front end cap 16, the later stage needs to cut casing 1 apart to the reprocessing of motor.
The invention relates to a shell 1, a silicon steel sleeve 2, a coil 3, a PCB support 4, a PCB 5, a Hall sensor 6, a rear end cover 7, a bearing 8, a waveform pad 9, a lead wire 10, a spacing ring 11, a rear balancing weight 12, rotor magnetic steel 13, a front balancing weight 14, a motor shaft 15, a front end cover 16 and insulating paper 17, wherein the components are all universal standard components or components known by technicians in the field, and the structure and the principle of the components can be known by technical manuals or conventional experimental methods, and the invention solves the problems that the existing hollow cup motor structure adopts an iron core rotor structure, the electric energy loss caused by eddy current can be formed, the operation characteristic of the motor cannot be improved and the control is inconvenient because the self weight and the rotational inertia are large, the mechanical energy loss is large, and the invention adopts the iron core-free rotor structure through the mutual combination of the components, the influence of electric energy loss caused by eddy current formed by the iron core is thoroughly eliminated, and meanwhile, the self weight and the rotational inertia of the iron core are greatly reduced, so that the mechanical energy consumption loss of the rotor is reduced, the running characteristic of the motor is greatly improved, the iron core motor has the outstanding energy-saving characteristic, and the control and dragging characteristics which cannot be achieved by the iron core motor are further possessed.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. Improved structure of the coreless motor is characterized in that: the motor comprises a casing (1), a silicon steel sleeve (2), a coil (3) and a motor shaft (15), wherein a front end cover (16) is arranged at the front end of the casing (1), a rear end cover (7) is arranged at the rear end of the casing (1), bearings (8) are arranged on the front end cover (16) and the inner side of the rear end cover (7), a silicon steel sleeve (2) is arranged on the inner side of the casing (1), a PCB support (4) is arranged at the rear end of the silicon steel sleeve (2), a PCB (5) is arranged at the inner side end of the PCB support (4), one side of the PCB (5) is connected with a Hall sensor (6), a lead (10) is connected to the other side of the PCB (5), the coil (3) is arranged on the inner side of the silicon steel sleeve (2), rotor magnetic steel (13) is arranged at the inner side end of the coil (3), and a front balancing weight (14) is arranged at the front, the rear end of rotor magnet steel (13) is equipped with rear balancing weight (12), through connection has motor shaft (15) in the middle of the inside of rotor magnet steel (13), the rear end of rear balancing weight (12) is equipped with spacing collar (11).
2. The improved coreless motor structure of claim 1, further comprising: the limiting ring (11) is sleeved at the outer end of the motor shaft (15), and the limiting ring (11) is located between the bearing (8) and the rear balancing weight (12).
3. The improved coreless motor structure of claim 1, further comprising: and a waveform pad (9) is arranged between the rear end of the bearing (8) and the inner side end of the rear end cover (7).
4. The improved coreless motor structure of claim 1, further comprising: and the inner side end of the front end cover (16) is fixedly provided with insulating paper (17) in an adhering mode, and the insulating paper (17) is in contact connection with the front end of the coil (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011175797.0A CN112217324A (en) | 2020-10-29 | 2020-10-29 | Improved structure of coreless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011175797.0A CN112217324A (en) | 2020-10-29 | 2020-10-29 | Improved structure of coreless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112217324A true CN112217324A (en) | 2021-01-12 |
Family
ID=74057417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011175797.0A Pending CN112217324A (en) | 2020-10-29 | 2020-10-29 | Improved structure of coreless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112217324A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113241921A (en) * | 2021-06-15 | 2021-08-10 | 深圳市科力尔电机有限公司 | Permanent magnet direct current brushless motor applied to household breathing machine |
-
2020
- 2020-10-29 CN CN202011175797.0A patent/CN112217324A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113241921A (en) * | 2021-06-15 | 2021-08-10 | 深圳市科力尔电机有限公司 | Permanent magnet direct current brushless motor applied to household breathing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210112 |
|
| WD01 | Invention patent application deemed withdrawn after publication |