US20060284502A1 - Motor - Google Patents
Motor Download PDFInfo
- Publication number
- US20060284502A1 US20060284502A1 US11/156,622 US15662205A US2006284502A1 US 20060284502 A1 US20060284502 A1 US 20060284502A1 US 15662205 A US15662205 A US 15662205A US 2006284502 A1 US2006284502 A1 US 2006284502A1
- Authority
- US
- United States
- Prior art keywords
- stator
- covers
- screw holes
- motor
- holes
- 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.)
- Granted
Links
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
- H02K5/15—Mounting arrangements for bearing-shields or end plates
Definitions
- the present invention relates to motors and more particularly, to a compact and inexpensive motor that dissipates heat quickly during operation.
- FIGS. 1 and 2 show a motor according to the prior art.
- the motor 10 is comprised of an outer shell 11 , a stator 12 , a rotor 13 , a front cover 14 , and a back cover 15 .
- the outer shell 11 has a plurality of radiation ribs 111 spaced around the periphery, and a plurality of screw holes 110 symmetrically formed in the two end walls.
- the stator 12 is fixedly mounted inside the outer shell 11 , comprising a plurality of silicon steel sheet members 120 arranged in a stack, an electrically insulative winding holder 122 axially mounted in the stack of silicon steel sheet members 120 , and an enameled wire 121 wound on the electrically insulative winding holder 122 to form windings around the inner diameter of the stack of silicon steel sheet members 120 .
- the front and back covers 14 and 15 are respectively covered on the two distal ends of the outer shell 11 , each having a center axle bearing 141 , an annular locating flange 142 protruded from the inner wall around the center axle bearing 141 and fitted into the outer shell 11 , and a plurality of mounting screw holes 140 respectively fastened to the screw holes 110 of the outer shell 11 with a respective screw.
- the rotor 13 is supported in the center axle bearings 141 of the covers 14 and 15 and suspending inside the outer shell 11 within the stator 12 .
- This design of motor 10 is still not satisfactory in function.
- the use of the outer shell 11 greatly increases the dimensions of the motor 10 and complicates the fabrication of the motor 10 , resulting in a high manufacturing cost.
- the stator 12 is mounted inside the outer shell 11 , heat produced by the silicon steel sheet members 120 during operation of the motor 10 is dissipated into the outside air through the radiation ribs 111 of the outer shell 11 , i.e., the silicon steel sheet members 120 cannot receive cooling air to dissipate heat efficiently. Because of poor heat dissipation effect, this design of motor 10 is not durable in use.
- the present invention has been accomplished under the circumstances in view. It is therefore one object of the present invention to provide a motor, which saves much material, thereby reducing the manufacturing cost. It is another object of the present invention to provide a motor, which dissipates heat quickly during operation.
- the motor comprises a stator, the stator having a plurality of axle holes extending through front and back sides thereof and a plurality of screw holes symmetrically formed in the front and back sides; a plurality of axles respectively inserted through the axle holes of the stator, the axles each having two ends respectively extending out of the front and back sides of the stator; two covers respectively attached to the front and back sides of the stator, the covers each having an inner side, an outer side opposite to the inner side, a plurality of locating holes formed in the inner side and adapted to receive the ends of the axles, an axle bear extending through the inner side and the outer side at the center, and a plurality of mounting screw holes extending through the inner side and the outer side corresponding to the screw holes of the stator; a plurality of tie screws respectively threaded into the mounting screw holes of the covers and the screw holes of the stator to affix the covers to the stator; and a rotor supported in the axle bearings of the covers
- FIG. 1 is an exploded view of a motor according to the prior art.
- FIG. 2 is a cross sectional view of the motor according to the prior art.
- FIG. 3 is an exploded view of a motor according to the present invention.
- FIG. 4A is a cross sectional view of the motor according to the present invention.
- FIG. 4B is a longitudinal view in section of the motor according to the present invention.
- a motor 20 in accordance with the present invention is shown comprised of a stator 22 , a rotor 23 , a front cover 24 , and a rear cover 25 .
- the stator 22 is comprised of a plurality of silicon steel sheet members 220 made subject to a predetermined pattern and arranged in a stack, an electrically insulative winding holder 222 axially mounted in the stack of silicon steel sheet members 220 , and an enameled wire 221 wound on the electrically insulative winding holder 222 to form windings around the inner diameter of the stack of silicon steel sheet members 220 .
- the stator 22 has a plurality of axle holes 224 axially extending through the front and back sides, and a plurality of screw holes 223 respectively symmetrically formed in the front and back sides.
- the front cover 24 and the back cover 25 each have an axle bearing 241 at the center, and a plurality of locating holes 242 respectively formed in the respective inner wall corresponding to the axle holes 224 of the stator 22 , and a plurality of mounting screw holes 240 respectively extending through the respective inner and outer walls corresponding to the screw holes 223 of the stator 22 .
- round axles 21 are respectively inserted through the axle holes 224 of the stator 22 , and then the rotor 23 is inserted through the stator 22 and suspending within the electrically insulative winding holder 222 with the two ends of the shaft thereof respectively supported in the axle bearings 241 of the front and back covers 24 and 25 , and then the front cover 24 and the back cover 25 are respectively covered on the front and back side of the stator 22 to force the locating holes 242 into engagement with the ends of the axles 21 respectively, and then screws are respectively threaded into the mounting screw holes 240 of the covers 24 and 25 and the screw holes 223 of the stator 20 to affix the covers 24 and 25 and the stator 22 firmly together, keeping the rotor 23 suspending between the covers 24 and 25 within the electrically insulative winding holder 222 (the windings of the enameled wire 221 ) of the stator 22 .
- gaskets may be mounted in between the covers 24 and 25 and the stator 22 to seal out outside water.
- the silicon steel sheet members 220 are respectively electrically insulated from one another.
- the electrically insulative winding holder 222 prevents direct contact of the silicon steel sheet members 220 with the windings of the enameled wire 221 . Because the silicon steel sheet members 220 are simply used to match with the windings of the enameled wire 221 for producing magnetic force, electric current is not connected to the silicon steel sheet members 220 . Therefore, touching the silicon steel sheet members 220 during operation of the motor 20 does not cause an electric shock.
- the invention provides a motor that has the following advantages:
- front and back covers are respectively supported on the ends of the axles that are inserted through the respective axle holes of the stator and screws are respective threaded into the respective mounting screw holes of the front and back covers and the respective screw holes at the front and back sides of the stator, the whole assembly of the motor is steady.
- the stator can be made having plugs (or plugholes) at the front and back sides for engagement with respective plugholes (or plugs) at the front and back covers. Accordingly, the invention is not to be limited except as by the appended claims.
Abstract
A motor includes a stator formed of a stack of silicon steel sheet members and a winding holder mounted inside the stack of silicon steel sheet members, axles inserted through the stator in four corners, front and back covers respectively covered on the front and back sides of the stator and engaged with the ends of the axles and affixed to the stator with screws, and a rotor supported between the front and back covers and suspending within the stator.
Description
- 1. Field of the Invention
- The present invention relates to motors and more particularly, to a compact and inexpensive motor that dissipates heat quickly during operation.
- 2. Description of the Related Art
-
FIGS. 1 and 2 show a motor according to the prior art. According to this design, themotor 10 is comprised of anouter shell 11, astator 12, arotor 13, afront cover 14, and aback cover 15. Theouter shell 11 has a plurality ofradiation ribs 111 spaced around the periphery, and a plurality ofscrew holes 110 symmetrically formed in the two end walls. Thestator 12 is fixedly mounted inside theouter shell 11, comprising a plurality of siliconsteel sheet members 120 arranged in a stack, an electricallyinsulative winding holder 122 axially mounted in the stack of siliconsteel sheet members 120, and anenameled wire 121 wound on the electricallyinsulative winding holder 122 to form windings around the inner diameter of the stack of siliconsteel sheet members 120. The front andback covers outer shell 11, each having a center axle bearing 141, an annular locatingflange 142 protruded from the inner wall around the center axle bearing 141 and fitted into theouter shell 11, and a plurality ofmounting screw holes 140 respectively fastened to thescrew holes 110 of theouter shell 11 with a respective screw. Therotor 13 is supported in thecenter axle bearings 141 of thecovers outer shell 11 within thestator 12. - This design of
motor 10 is still not satisfactory in function. The use of theouter shell 11 greatly increases the dimensions of themotor 10 and complicates the fabrication of themotor 10, resulting in a high manufacturing cost. Further, because thestator 12 is mounted inside theouter shell 11, heat produced by the siliconsteel sheet members 120 during operation of themotor 10 is dissipated into the outside air through theradiation ribs 111 of theouter shell 11, i.e., the siliconsteel sheet members 120 cannot receive cooling air to dissipate heat efficiently. Because of poor heat dissipation effect, this design ofmotor 10 is not durable in use. - The present invention has been accomplished under the circumstances in view. It is therefore one object of the present invention to provide a motor, which saves much material, thereby reducing the manufacturing cost. It is another object of the present invention to provide a motor, which dissipates heat quickly during operation. To achieve these and other objects of the present invention, the motor comprises a stator, the stator having a plurality of axle holes extending through front and back sides thereof and a plurality of screw holes symmetrically formed in the front and back sides; a plurality of axles respectively inserted through the axle holes of the stator, the axles each having two ends respectively extending out of the front and back sides of the stator; two covers respectively attached to the front and back sides of the stator, the covers each having an inner side, an outer side opposite to the inner side, a plurality of locating holes formed in the inner side and adapted to receive the ends of the axles, an axle bear extending through the inner side and the outer side at the center, and a plurality of mounting screw holes extending through the inner side and the outer side corresponding to the screw holes of the stator; a plurality of tie screws respectively threaded into the mounting screw holes of the covers and the screw holes of the stator to affix the covers to the stator; and a rotor supported in the axle bearings of the covers and suspending within the stator. Because the motor eliminates the use of an outer shell, the dimensions and weight of the motor are greatly reduced, and heat can quickly be dissipated into the outside open air during the operation of the motor.
- 2. Description of the Related Art
-
FIG. 1 is an exploded view of a motor according to the prior art. -
FIG. 2 is a cross sectional view of the motor according to the prior art. -
FIG. 3 is an exploded view of a motor according to the present invention. -
FIG. 4A is a cross sectional view of the motor according to the present invention. -
FIG. 4B is a longitudinal view in section of the motor according to the present invention. - Referring to
FIGS. 3, 4A and 4B, amotor 20 in accordance with the present invention is shown comprised of astator 22, arotor 23, afront cover 24, and arear cover 25. - The
stator 22 is comprised of a plurality of siliconsteel sheet members 220 made subject to a predetermined pattern and arranged in a stack, an electricallyinsulative winding holder 222 axially mounted in the stack of siliconsteel sheet members 220, and anenameled wire 221 wound on the electricallyinsulative winding holder 222 to form windings around the inner diameter of the stack of siliconsteel sheet members 220. Thestator 22 has a plurality ofaxle holes 224 axially extending through the front and back sides, and a plurality ofscrew holes 223 respectively symmetrically formed in the front and back sides. - The
front cover 24 and theback cover 25 each have an axle bearing 241 at the center, and a plurality of locatingholes 242 respectively formed in the respective inner wall corresponding to theaxle holes 224 of thestator 22, and a plurality ofmounting screw holes 240 respectively extending through the respective inner and outer walls corresponding to thescrew holes 223 of thestator 22. - During installation, round
axles 21 are respectively inserted through theaxle holes 224 of thestator 22, and then therotor 23 is inserted through thestator 22 and suspending within the electricallyinsulative winding holder 222 with the two ends of the shaft thereof respectively supported in theaxle bearings 241 of the front and back covers 24 and 25, and then thefront cover 24 and theback cover 25 are respectively covered on the front and back side of thestator 22 to force the locatingholes 242 into engagement with the ends of theaxles 21 respectively, and then screws are respectively threaded into themounting screw holes 240 of thecovers screw holes 223 of thestator 20 to affix thecovers stator 22 firmly together, keeping therotor 23 suspending between thecovers stator 22. Further, gaskets may be mounted in between thecovers stator 22 to seal out outside water. Further, the siliconsteel sheet members 220 are respectively electrically insulated from one another. The electricallyinsulative winding holder 222 prevents direct contact of the siliconsteel sheet members 220 with the windings of theenameled wire 221. Because the siliconsteel sheet members 220 are simply used to match with the windings of theenameled wire 221 for producing magnetic force, electric current is not connected to the siliconsteel sheet members 220. Therefore, touching the siliconsteel sheet members 220 during operation of themotor 20 does not cause an electric shock. - As indicated above, the invention provides a motor that has the following advantages:
- 1. Because no outer shell is used, the invention saves much material.
- 2. Because no outer shell is needed, the gravity weight and dimensions of the motor are greatly reduced.
- 3. Because the silicon steel sheet members of the stator are exposed to the outside open air, heat can quickly be dissipated into the outside open air during operation of the motor.
- 4. Because the front and back covers are respectively supported on the ends of the axles that are inserted through the respective axle holes of the stator and screws are respective threaded into the respective mounting screw holes of the front and back covers and the respective screw holes at the front and back sides of the stator, the whole assembly of the motor is steady.
- 5. Because the axles are inserted through the respective axle holes in the four corners of the stator and engaged in the respective locating holes at the front and back covers, the stator is prohibited from displacement relative to the front and back covers.
- Although a particular embodiment of the invention has been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. For example, instead of the design of the axle holes at the stator and the locating holes at the front and back covers and the use of the respective axles, the stator can be made having plugs (or plugholes) at the front and back sides for engagement with respective plugholes (or plugs) at the front and back covers. Accordingly, the invention is not to be limited except as by the appended claims.
Claims (1)
1. A motor comprising:
a stator, said stator having a plurality of axle holes extending through front and back sides thereof and a plurality of screw holes symmetrically formed in the front and back sides;
a plurality of axles respectively inserted through said plurality of axle holes of said stator, said axles each having two opposing ends respectively extending out from the front and back sides of said stator;
two covers respectively attached to the front and back sides of said stator, each of said covers having an inner side, an outer side opposite to said inner side, a plurality of locating holes formed in said inner side and adapted to receive the extending ends of said axles therein, an axle bearing extending through said inner side and said outer side at a central portion thereof, and a plurality of mounting screw holes extending through said inner side and said outer side corresponding to the screw holes of said stator;
a plurality of tie screws respectively threaded into the mounting screw holes of said covers and the screw holes of said stator to affix said covers to said stator; and
a rotor supported in the axle bearings of said covers and suspending within said stator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/156,622 US7157825B1 (en) | 2005-06-21 | 2005-06-21 | Motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/156,622 US7157825B1 (en) | 2005-06-21 | 2005-06-21 | Motor |
Publications (2)
Publication Number | Publication Date |
---|---|
US20060284502A1 true US20060284502A1 (en) | 2006-12-21 |
US7157825B1 US7157825B1 (en) | 2007-01-02 |
Family
ID=37572703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/156,622 Expired - Fee Related US7157825B1 (en) | 2005-06-21 | 2005-06-21 | Motor |
Country Status (1)
Country | Link |
---|---|
US (1) | US7157825B1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090016917A1 (en) * | 2007-07-11 | 2009-01-15 | Gast Manufacturing, Inc. | Compact Dual Rocking Piston Pump with Reduced Number of Parts |
US20170012487A1 (en) * | 2014-02-17 | 2017-01-12 | Siemens Aktiengesellschaft | Electrical machine having a frame and sleeve |
CN109687622A (en) * | 2019-01-25 | 2019-04-26 | 常康华 | A kind of anticreep permanent magnet synchronous motor |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005038781A1 (en) * | 2005-08-17 | 2007-02-22 | Danfoss Compressors Gmbh | Linear compressor, in particular refrigerant compressor |
DE102011090076A1 (en) * | 2011-12-29 | 2013-07-04 | Robert Bosch Gmbh | Device for holding a machine component in an electric machine and electric machine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1611942A (en) * | 1920-10-20 | 1926-12-28 | Cook Electric Co | Hollow rivet and process for making same |
US2245433A (en) * | 1939-10-13 | 1941-06-10 | Chicago Flexible Shaft Co | Electric motor and method of making the same |
US4972113A (en) * | 1989-07-14 | 1990-11-20 | Emerson Electric Co. | Structure and method of assembly of bearing support means to the stator assembly of an electric motor |
US5852338A (en) * | 1997-02-03 | 1998-12-22 | General Electric Company | Dynamoelectric machine and method for manufacturing same |
-
2005
- 2005-06-21 US US11/156,622 patent/US7157825B1/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1611942A (en) * | 1920-10-20 | 1926-12-28 | Cook Electric Co | Hollow rivet and process for making same |
US2245433A (en) * | 1939-10-13 | 1941-06-10 | Chicago Flexible Shaft Co | Electric motor and method of making the same |
US4972113A (en) * | 1989-07-14 | 1990-11-20 | Emerson Electric Co. | Structure and method of assembly of bearing support means to the stator assembly of an electric motor |
US5852338A (en) * | 1997-02-03 | 1998-12-22 | General Electric Company | Dynamoelectric machine and method for manufacturing same |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090016917A1 (en) * | 2007-07-11 | 2009-01-15 | Gast Manufacturing, Inc. | Compact Dual Rocking Piston Pump with Reduced Number of Parts |
US8128382B2 (en) * | 2007-07-11 | 2012-03-06 | Gast Manufacturing, Inc. | Compact dual rocking piston pump with reduced number of parts |
US20170012487A1 (en) * | 2014-02-17 | 2017-01-12 | Siemens Aktiengesellschaft | Electrical machine having a frame and sleeve |
US11018548B2 (en) * | 2014-02-17 | 2021-05-25 | Siemens Aktiengesellschaft | Electrical machine having a frame and sleeve |
CN109687622A (en) * | 2019-01-25 | 2019-04-26 | 常康华 | A kind of anticreep permanent magnet synchronous motor |
Also Published As
Publication number | Publication date |
---|---|
US7157825B1 (en) | 2007-01-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5783888A (en) | Rotary electric machine | |
US6175171B1 (en) | Electric drive motor | |
US6713907B2 (en) | Blower for use in office automation equipment | |
US20110278970A1 (en) | Electric motor | |
US9088198B2 (en) | Motor | |
JP2010098816A (en) | Blower motor | |
US7157825B1 (en) | Motor | |
CN103138484B (en) | Cooling structure for brushless motor | |
US11025144B2 (en) | Outer rotor motor having support member | |
US5486728A (en) | Micromotor | |
JP6199057B2 (en) | Electric motor | |
KR20170072139A (en) | Motor | |
JP6194877B2 (en) | Rotating electric machine | |
US20060170294A1 (en) | Heat dissipation structure of a motor | |
JP2014171365A (en) | Stator, electric motor, and motor with speed reducer | |
JPH10174371A (en) | Cooler of motor | |
JP2006314166A (en) | Capacitor mounted motor and ventilator | |
JP2020092469A (en) | Rotary electric machine and blower | |
WO2006048951A1 (en) | Motor and electric apparatus using the same motor | |
JP7191383B2 (en) | Motor casing and motor provided with the same | |
KR102495648B1 (en) | Motor | |
JP6928434B2 (en) | Axial fan device | |
KR102485026B1 (en) | Rotor and motor having the same | |
US10153669B2 (en) | Device for preventing vibration of stator core for power generator | |
JP7375805B2 (en) | Electric motor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FPAY | Fee payment |
Year of fee payment: 4 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20150102 |