CN111342577A - Novel motor rotor end plate - Google Patents
Novel motor rotor end plate Download PDFInfo
- Publication number
- CN111342577A CN111342577A CN202010107228.6A CN202010107228A CN111342577A CN 111342577 A CN111342577 A CN 111342577A CN 202010107228 A CN202010107228 A CN 202010107228A CN 111342577 A CN111342577 A CN 111342577A
- Authority
- CN
- China
- Prior art keywords
- counter bore
- end plate
- counter
- rotor end
- motor rotor
- 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
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Classifications
-
- 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
-
- 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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/04—Balancing means
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a novel motor rotor end plate which comprises a rotor body, wherein a first counter bore is formed in the end face of the rotor body, the first counter bore and the rotor body are coaxially arranged, a second counter bore is formed in the bottom surface of the first counter bore, the second counter bore and the first counter bore are coaxially arranged, the bottom surface of the first counter bore in the side wall of the second counter bore is in transition through a chamfer, a through hole is formed in the center of the bottom surface of the second counter bore, and the through hole penetrates through the rotor body. The invention provides a novel motor rotor end plate which can reduce turbulence pulsation generated by the rotor end plate, reduce the rotation resistance of a rotor, optimize pneumatic noise and reduce the quality of the end plate.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a novel motor rotor end plate.
Background
The rotor end plate is the main part of the motor rotor, turbulent pulsation caused by the design of the reinforcing ribs is not considered in the design of the existing motor rotor end plate, and the reinforcing ribs push ambient air to move when the motor runs, so that the air pressure of the ambient air around the reinforcing ribs changes suddenly, further turbulent pulsation is generated, large wind noise is easily generated, and the sound pressure frequency spectrum characteristic of the motor rotor is excited by broadband. When the motor is accelerated at 1000 RPM-8000 RPM, the sound pressure level at 0.6m of the motor side of the existing motor rotor end plate reaches 54dB (A) -73 dB (A), and large turbulence pulsation can be generated around the end plate, so that broadband energy excitation of 700 Hz-5000 Hz is large, and the low-noise design requirement is not met; and when the machine rotor end plate is designed, the mass of the rotor end plate is 0.522kg, and the lightweight design requirement is not considered. Therefore, a novel motor rotor end plate needs to be designed, turbulence pulsation generated by the rotor end plate can be reduced, the rotation resistance of the rotor is reduced, pneumatic noise is optimized, and the quality of the end plate is reduced.
Chinese patent application publication No. CN102035276A, published as 2011, 04, 27, entitled "motor rotor end plate and manufacturing method thereof", discloses a motor rotor end plate, which includes an annular plate body and a tooth pressing plate. The plate body is provided with a positioning hole corresponding to the tooth pressing piece, the back of the tooth pressing piece is provided with a positioning block and is arranged in the positioning hole of the plate body in a close fit and fixed mode, and the annular plate body and the tooth pressing piece are fixed through spot welding. The invention also discloses a manufacturing method of the motor rotor end plate, wherein the annular plate body is provided with a positioning hole corresponding to the tooth pressing sheet, the back of the tooth pressing sheet is provided with a corresponding positioning block, and the positioning block is arranged in the positioning hole to accurately position the tooth pressing sheet, so that the positioning of spot welding is facilitated, the spot welding precision can be ensured, and the reliability of the product is enhanced. The rotor end plate of the above patent still has the above problems.
Disclosure of Invention
The invention provides a novel motor rotor end plate for overcoming the problem of high noise of a motor rotor end plate in the prior art, which can reduce turbulence pulsation generated by the rotor end plate, reduce the rotation resistance of a rotor, optimize pneumatic noise and reduce the quality of the end plate.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a novel motor rotor end plate, includes rotor body, and rotor body's terminal surface is equipped with first counter bore, and first counter bore sets up with rotor body is coaxial, is equipped with the second counter bore on the bottom surface of first counter bore, and the second counter bore sets up with first counter bore is coaxial, and the underrun chamfer transition of the first counter bore of lateral wall of second counter bore, and second counter bore bottom surface center is equipped with the through-hole, the through-hole runs through rotor body.
According to the optimized motor rotor end plate, the diameters of two counter bores on the end face of the rotor end plate are optimized through structural topology simulation, chamfering transition is increased, turbulence pulsation is effectively reduced, rotor rotation resistance is reduced, pneumatic noise is optimized, and the quality of the end plate is reduced.
Preferably, the diameter of the first counter bore is 130.6mm, and the diameter of the second counter bore is 90 mm. The diameter is an optimized value, and the mass of the optimized rear end plate is 0.462 kg.
Preferably, the chamfer radius is 5 mm.
Preferably, the bottom surface between the first counter bore and the second counter bore is a plane. The planar design can reduce turbulence pulsation of the rotor end plate, thereby reducing noise and vibration.
Preferably, the bottom surface of the first counter bore is provided with a plurality of third counter bores, and the third counter bores are distributed along the axial line of the first counter bore in the circumferential direction. The structure can reduce the weight of the rotor end plate.
Preferably, the bottom surface of the first counter bore is provided with a plurality of counter weight counter bores, and the counter weight counter bores are distributed along the axial line of the first counter bore in the circumferential direction. The structure can reduce the weight of the rotor end plate and improve the dynamic balance performance of the rotor end plate.
Preferably, the other end surface of the rotor body is a flat surface. The structure can reduce the turbulence intensity of the area near the end plate, reduce the rotation resistance of the rotor and reduce the noise of the motor.
Preferably, the side surface of the first counterbore is a tapered inclined surface, and the diameter of the tapered inclined surface close to the bottom surface of the first counterbore is smaller than that of the tapered inclined surface far away from the bottom surface of the first counterbore. The structure can make the transition of the counter bore smoother, reduce the turbulence intensity of the area near the end plate, reduce the rotation resistance of the rotor and reduce the noise of the motor.
Preferably, the side surface of the second counterbore is a tapered inclined surface, and the diameter of the tapered inclined surface close to the bottom surface of the second counterbore is smaller than that of the tapered inclined surface close to the bottom surface of the first counterbore. The structure can make the transition of the counter bore smoother, reduce the turbulence intensity of the area near the end plate, reduce the rotation resistance of the rotor and reduce the noise of the motor.
The invention has the beneficial effects that: the turbulence intensity of the area near the end plate can be reduced, the rotation resistance of the rotor is reduced, the noise of the motor is reduced, the broadband noise frequency spectrum is improved, and the sound quality level of the motor is improved; meanwhile, the quality of the end plate is reduced, and the requirements of light weight and low cost are further met.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view of the present invention.
In the figure: the rotor comprises a rotor body 1, a first counter bore 2, a second counter bore 3, a chamfer 4, a through hole 5, a third counter bore 6 and a counter weight counter bore 7.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1:
as shown in fig. 1 and fig. 2, a novel motor rotor end plate includes a rotor body 1, wherein an end surface of the rotor body 1 is a plane; the other end face of the rotor body 1 is provided with a first counter bore 2, the diameter of the first counter bore 2 is 130.6mm, and the first counter bore 2 and the rotor body 1 are coaxially arranged; a second counter bore 3 is arranged on the bottom surface of the first counter bore 2, the diameter of the second counter bore 3 is 90mm, the second counter bore 3 and the first counter bore 2 are coaxially arranged, and the bottom surface between the first counter bore 2 and the second counter bore 3 is a plane; the bottom surface of the first counter bore 2 of the side wall of the second counter bore 3 is transited by a chamfer 4, and the radius of the chamfer 4 is 5 mm. A through hole 5 is formed in the center of the bottom surface of the second counter bore 3, and the through hole 5 penetrates through the rotor body 1; a plurality of third counter bores 6 are arranged on the bottom surface of the first counter bore 2, and the third counter bores 6 are circumferentially distributed along the axis of the first counter bore 2; the bottom surface of the first counter bore 2 is provided with a plurality of counter weight counter bores 7, and the counter weight counter bores 7 are distributed along the axial direction of the first counter bore 2. The side surface of the first counter bore 2 is a conical inclined surface, and the diameter of the conical inclined surface close to the bottom surface of the first counter bore 2 is smaller than the diameter of the conical inclined surface far away from the bottom surface of the first counter bore 2. The diameter of the conical inclined plane close to the bottom surface of the second counter bore 3 is smaller than that of the conical inclined plane close to the bottom surface of the first counter bore 2.
The invention has the beneficial effects that: the turbulence intensity of the area near the end plate can be reduced, the rotation resistance of the rotor is reduced, the noise of the motor is reduced, the broadband noise frequency spectrum is improved, and the sound quality level of the motor is improved; meanwhile, the quality of the end plate is reduced, and the requirements of light weight and low cost are further met.
Claims (9)
1. The utility model provides a novel motor rotor end plate, includes rotor body, characterized by, and rotor body's terminal surface is equipped with first counter bore, and first counter bore sets up with rotor body is coaxial, is equipped with the second counter bore on the bottom surface of first counter bore, and the second counter bore sets up with first counter bore is coaxial, and the underrun chamfer transition of the first counter bore of lateral wall of second counter bore, and second counter bore bottom surface center is equipped with the through-hole, the through-hole runs through rotor body.
2. The novel motor rotor end plate of claim 1, wherein the diameter of the first counter bore is 130.6mm, and the diameter of the second counter bore is 90 mm.
3. The new electric machine rotor end plate of claim 2, wherein said chamfer radius is 5 mm.
4. The novel motor rotor end plate of claim 1, wherein the bottom surface between the first counterbore and the second counterbore is a plane.
5. The novel motor rotor end plate as claimed in claim 1, 2, 3 or 4, wherein a plurality of third counter bores are arranged on the bottom surface of the first counter bore, and the third counter bores are distributed along the axis of the first counter bore in the circumferential direction.
6. The novel motor rotor end plate as claimed in claim 1, 2, 3 or 4, wherein a plurality of counter weight holes are formed in the bottom surface of the first counter weight hole, and are distributed along the axial direction of the first counter weight hole.
7. A novel motor rotor end plate according to claim 1 or 2 or 3 or 4, wherein the other end face of the rotor body is planar.
8. The novel motor rotor end plate of claim 1, 2, 3 or 4, wherein the side surface of the first counterbore is a tapered inclined surface, and the diameter of the tapered inclined surface close to the bottom surface of the first counterbore is smaller than the diameter of the tapered inclined surface far away from the bottom surface of the first counterbore.
9. The novel motor rotor end plate of claim 1, 2, 3 or 4, wherein the side surface of the second counterbore is a tapered inclined surface, and the diameter of the tapered inclined surface close to the bottom surface of the second counterbore is smaller than that of the tapered inclined surface close to the bottom surface of the first counterbore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010107228.6A CN111342577A (en) | 2020-02-21 | 2020-02-21 | Novel motor rotor end plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010107228.6A CN111342577A (en) | 2020-02-21 | 2020-02-21 | Novel motor rotor end plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111342577A true CN111342577A (en) | 2020-06-26 |
Family
ID=71187098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010107228.6A Pending CN111342577A (en) | 2020-02-21 | 2020-02-21 | Novel motor rotor end plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111342577A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914938A (en) * | 2016-06-14 | 2016-08-31 | 江阴市澳盛动力设备有限公司 | Counterweight support and motor applying the support |
| CN208518880U (en) * | 2018-06-01 | 2019-02-19 | 南京金牛机械制造股份有限公司 | A kind of rotor of engine oil pump |
| CN209016868U (en) * | 2018-10-10 | 2019-06-21 | 华域汽车电动系统有限公司 | A kind of rotor dynamic balancing plate |
| EP3540919A1 (en) * | 2018-03-13 | 2019-09-18 | Magneti Marelli S.p.A. | Rotor for a rotary electric machine |
-
2020
- 2020-02-21 CN CN202010107228.6A patent/CN111342577A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914938A (en) * | 2016-06-14 | 2016-08-31 | 江阴市澳盛动力设备有限公司 | Counterweight support and motor applying the support |
| EP3540919A1 (en) * | 2018-03-13 | 2019-09-18 | Magneti Marelli S.p.A. | Rotor for a rotary electric machine |
| CN208518880U (en) * | 2018-06-01 | 2019-02-19 | 南京金牛机械制造股份有限公司 | A kind of rotor of engine oil pump |
| CN209016868U (en) * | 2018-10-10 | 2019-06-21 | 华域汽车电动系统有限公司 | A kind of rotor dynamic balancing plate |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200626 |
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| RJ01 | Rejection of invention patent application after publication |