CN105914945A - Device for preventing axial endplay of motor - Google Patents
Device for preventing axial endplay of motor Download PDFInfo
- Publication number
- CN105914945A CN105914945A CN201610478391.7A CN201610478391A CN105914945A CN 105914945 A CN105914945 A CN 105914945A CN 201610478391 A CN201610478391 A CN 201610478391A CN 105914945 A CN105914945 A CN 105914945A
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- rotor
- axial movement
- motor device
- phase magnet
- 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
- 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
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/12—Structural association with clutches, brakes, gears, pulleys or mechanical starters with auxiliary limited movement of stators, rotors or core parts, e.g. rotors axially movable for the purpose of clutching or braking
-
- 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
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a device for preventing axial endplay of a motor. The device comprises a rotating shaft, a stator, a rotor, a rotor magnetic ring, a positioning magnet and fan blades, wherein the rotating shaft is arranged at the inner side of the stator; the stator comprises a stator core; a rotor sleeves one end of the rotating shaft; the positioning magnet is arranged at the other end of the rotating shaft; the fan blades are fixed at the outer side of the rotor; and the rotor magnetic ring is arranged at the inner side of the rotor and is located between the rotor and the stator core. Transverse suspended operation of the motor is achieved by the attractive force of the positioning magnet 5 and the rotating shaft 1; and the fan blades 6 are always kept in tight fit with the rotor in the air outlet process, so that axial endplay of the rotating shaft 1 and various components arranged on the rotating shaft 1 is prevented; the running stability of the motor is ensured; the noise is reduced; the motor technology is optimized; and the material cost is reduced.
Description
Technical field
The invention belongs to the critical piece of a kind of refrigerator fan motor, especially relate to one and prevent motor
Axial float device.
Background technology
Along with popularizing of refrigerator air cooling technology, refrigerator fan motor is the most commercially used, but
Existing refrigerator fan motor uses and rivets copper ring bottom rotating shaft, then joins bottom rotating shaft with metallic gasket
Close, make fan blade stator core during air-out coordinate operating with outer rotor magnet.Such fan of refrigerator
It is relatively big with the frictional force of rear seal-cover inner bearing end face that the structure of motor has metallic gasket, causes motor
Noise is big, and cost is high, the shortcoming that processing technique is complicated.
Summary of the invention
It is an object of the invention to provide one and prevent axial movement of motor device and processing method, it is possible to
Solve at least one in the problems referred to above.
According to an aspect of the invention, it is provided one prevents axial movement of motor device, including turning
Axle, stator, rotor, rotor magnetic ring, phase magnet and fan blade, the inner side of stator is located in rotating shaft, fixed
Attached bag includes stator core, and rotor is set in one end of rotating shaft, and phase magnet is located at the other end of rotating shaft,
Fan blade is fixed on outside rotor, and rotor magnetic ring is located at the inner side of rotor, be positioned at rotor and stator core it
Between.
The invention has the beneficial effects as follows: inside rotor, be provided with rotor magnetic ring so that rotor magnetic ring is with fixed
Mutual attractive force is there is between sub-iron core, when rotor magnetic ring remains static with stator core, two
There is relative dislocation in person, there is lateral attraction forces between the two;Meanwhile, phase magnet countershaft is another
One end has attraction force;And when fan blade rotates, after operating, fan blade air-out is to rotating shaft side,
Rotor entirety is then by rightabout pulling force.Thus, the attraction of phase magnet and roller end is used
Power so that in motor operation course, is acted on roller end captivation by phase magnet all the time,
Make rotating shaft all the time by the active force to phase magnet side, and be close to phase magnet side, from
And eliminate the axial float of motor operation course shaft, reduce noise during electric machine rotation, knot
Structure is simple, easy to process.
In some embodiments, one prevents axial movement of motor device from also including rear seal-cover, seals afterwards
Being covered with stepped throughhole, the other end of rotating shaft is positioned at through hole, and phase magnet is positioned at through hole.By
This, be provided with rear seal-cover, can improve the globality of whole device, and be easy to the fixing of each parts,
Convenient installation.
In some embodiments, one prevents axial movement of motor device from also including snap ring, outside rotating shaft
Side is provided with draw-in groove, and snap ring matches with draw-in groove.Thus, it is provided with snap ring, can be by regulation snap ring
Length, when in regulation rotating shaft, each parts are installed, the regulation of length, can effectively limit rotor by snap ring
Axial float in rotating shaft, it is achieved nail and rotor in motor between coordinate, prevent fan blade from coming off.
In some embodiments, one prevents axial movement of motor device from also including Graphite pad, turns
The end face of the other end of axle is spherical in shape, and Graphite pad is between phase magnet and the other end of rotating shaft.
Thus, being provided with Graphite pad, be possible to prevent phase magnet and rotating shaft directly contacts friction, improves
In the service life of rotating shaft, reduce coefficient of friction.
In some embodiments, one prevents axial movement of motor device from also including bearing, bearing holder (housing, cover)
Being located at the inwall of rear seal-cover through hole, phase magnet is between bearing bottom and Graphite pad.Thus,
It is provided with bearing, each parts can be avoided directly to contact with rear seal-cover, improve the service life of rear seal-cover.
In some embodiments, one prevents axial movement of motor device rotor magnetic ring and stator core
Between active force, the captivation of phase magnet countershaft, these two power sums more than fan blade operate time
Rotating shaft is by the reversal interlocking relay of fan blade.Thus, it is possible to ensure that rotating shaft is all the time by phase magnet side
Pulling force, be adjacent to phase magnet side, effectively eliminate rotating shaft axial float.
In some embodiments, card is equipped with opening.Thus, it is provided with opening, snap ring can be facilitated
It is fastened on the draw-in groove of rotating shaft.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation preventing axial movement of motor device of the present invention;
Fig. 2 is the structure for amplifying schematic diagram of part A in Fig. 1.
Detailed description of the invention
The present invention is further detailed explanation below in conjunction with the accompanying drawings.
See figures.1.and.2: one prevents axial movement of motor device, including rotating shaft 1, stator 2,
Rotor 3, rotor magnetic ring 4, phase magnet 5 and fan blade 6, the inner side of stator 2 is located in rotating shaft 1, fixed
Son 2 includes that stator core 21, rotor 3 are set in one end of rotating shaft 1, and phase magnet 5 is located at rotating shaft
The other end of 1, fan blade 6 is fixed on outside rotor 3, and rotor magnetic ring 4 is located at the inner side of rotor 3, position
Between rotor 3 and stator core 21.Wherein, the material of phase magnet 5 is neodymium iron boron, rotating shaft 1
Material be chromium.
Directed force F 1 between rotor magnetic ring 4 and stator core 21, the suction of phase magnet 5 countershaft 1
Gravitation F2, when these two power sums operate more than fan blade 6, rotating shaft 1 is by the reversal interlocking relay F3 of fan blade 6,
Wherein the force direction of F1 with F2 countershaft 1 is identical, the force direction of F3 countershaft 1 and F1
The force direction acting on rotating shaft 1 is contrary.Thus, fan blade 6 is when rotating, and rotating shaft 1 is made
The firmly effect of F1 and F2, rotating shaft 1 rotor driven 3 is applied laterally drawing of power F1 and F2 all the time
Power to phase magnet 5 side against, thus prevent rotating shaft 1 and the axial float of rotor 3, reduce
Noise when refrigerator fan motor uses.
One prevents axial movement of motor device from also including, and rear seal-cover 7, rear seal-cover 7 are provided with stepped leading to
Hole, the other end of rotating shaft 1 is positioned at through hole, and phase magnet 5 is positioned at through hole.Rear seal-cover 7 increases
The globality of whole device, it is simple to the installation of each parts and fixing.
One prevents axial movement of motor device from also including snap ring 8, is provided with draw-in groove 11 outside rotating shaft 1,
Snap ring 8 matches with draw-in groove 11.Wherein, snap ring 8 is provided with opening.Snap ring 8 uses nylon glass material
Matter, snap ring 8 is provided with opening, and snap ring 8 can be facilitated to snap in when mounted in draw-in groove 11.Draw-in groove 11
Can effectively limit the rotor 3 axial float in rotating shaft 1 with the length of snap ring 8, be blocked by regulation
Groove 11 and the length of snap ring 8, and then the compactness that regulation rotor 3 is installed in rotating shaft 1, it is achieved fixed
Cooperating between son, rotor, effectively prevents fan blade 6 from coming off.
One prevents axial movement of motor device from also including Graphite pad 9, the end face of the other end of rotating shaft 1
Spherical in shape, Graphite pad 9 is between the other end of phase magnet 5 and rotating shaft 1.Therefore, graphite
Pad 9 directly contacts with rotating shaft 1, and coefficient of friction is relatively low, it is to avoid phase magnet 5 and rotating shaft 1
Directly contact, improves phase magnet 5 and the ruggedness of rotating shaft 1 and service life.
One prevents axial movement of motor device from also including, and bearing 10, bearing 10 are set in rear seal-cover 7
The inwall of through hole, phase magnet 5 is between bearing 10 bottom and Graphite pad 9.Bearing 10 is adopted
With oiliness bearing, decrease the coefficient of friction between bearing 10 and each contact component, improve bearing 10
Service life, prevent phase magnet 5 from directly contacting with rear seal-cover 7 simultaneously.
It is of the prior art bottom rotating shaft that the one of the present invention prevents axial movement of motor device from eliminating
Riveting copper ring, by the captivation of phase magnet 5 with rotating shaft 1, it is achieved motor laterally suspends operating,
Fan blade 6 is remained and the closely cooperating of rotor 3 during air-out, it is therefore prevented that rotating shaft 1 and
There is axial float in each parts installed in rotating shaft 1, it is ensured that the stationarity of motor rotation, reduce
Noise, optimizes motor process, reduces material cost.
Above-described is only the preferred embodiment of the present invention, it is noted that general for this area
For logical technical staff, without departing from the concept of the premise of the invention, it is also possible to make some changes
Shape and improvement, these broadly fall into protection scope of the present invention.
Claims (7)
1. one kind prevents axial movement of motor device, it is characterised in that include rotating shaft (1), stator (2),
Rotor (3), rotor magnetic ring (4), phase magnet (5) and fan blade (6), described rotating shaft (1) sets
In the inner side of stator (2), described stator (2) includes stator core (21), described rotor (3)
Being set in one end of rotating shaft (1), described phase magnet (5) is located at the other end of rotating shaft (1), institute
Stating fan blade (6) and be fixed on rotor (3) outside, described rotor magnetic ring (4) is located at rotor (3)
Inner side, is positioned between rotor (3) and stator core (21).
One the most according to claim 1 prevents axial movement of motor device, it is characterised in that
Also include that rear seal-cover (7), described rear seal-cover (7) are provided with stepped throughhole, described rotating shaft (1)
The other end is positioned at through hole, and described phase magnet (5) is positioned at through hole.
One the most according to claim 2 prevents axial movement of motor device, it is characterised in that
Also include that snap ring (8), described rotating shaft (1) outside are provided with draw-in groove (11), described snap ring (8) and card
Groove (11) matches.
4. preventing axial movement of motor device according to the one described in Claims 2 or 3, its feature exists
In, also including Graphite pad (9), the end face of the other end of described rotating shaft (1) is spherical in shape, described stone
Tampon sheet (9) is positioned between the other end of phase magnet (5) and rotating shaft (1).
One the most according to claim 4 prevents axial movement of motor device, it is characterised in that
Also include that bearing (10), described bearing (10) are set in the inwall of rear seal-cover (7) through hole, described
Phase magnet (5) is positioned between bearing (10) bottom and Graphite pad (9).
One the most according to claim 1 prevents axial movement of motor device, it is characterised in that
Active force between described rotor magnetic ring (4) and stator core (21), phase magnet (5) are to turning
The captivation of axle (1), when these two power sums operate more than fan blade (6), rotating shaft (1) is by fan blade
(6) reversal interlocking relay.
One the most according to claim 3 prevents axial movement of motor device, it is characterised in that
Described snap ring (8) is provided with opening.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610478391.7A CN105914945A (en) | 2016-06-23 | 2016-06-23 | Device for preventing axial endplay of motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610478391.7A CN105914945A (en) | 2016-06-23 | 2016-06-23 | Device for preventing axial endplay of motor |
Publications (1)
Publication Number | Publication Date |
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CN105914945A true CN105914945A (en) | 2016-08-31 |
Family
ID=56759665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201610478391.7A Pending CN105914945A (en) | 2016-06-23 | 2016-06-23 | Device for preventing axial endplay of motor |
Country Status (1)
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CN (1) | CN105914945A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107453542A (en) * | 2017-08-14 | 2017-12-08 | 珠海格力电器股份有限公司 | Motor assembly |
WO2019104646A1 (en) * | 2017-11-30 | 2019-06-06 | 深圳市大疆创新科技有限公司 | Motor structure and power assembly applied to unmanned aerial vehicle, and unmanned aerial vehicle |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN205160274U (en) * | 2015-10-27 | 2016-04-13 | 东莞市银海塑胶电子有限公司 | Motor shaft's anti -disengaging structure |
CN205681237U (en) * | 2016-06-23 | 2016-11-09 | 曾子斌 | One prevents axial movement of motor device |
CN205693496U (en) * | 2016-06-17 | 2016-11-16 | 浙江松上电机科技有限公司 | A kind of fan electromotor |
-
2016
- 2016-06-23 CN CN201610478391.7A patent/CN105914945A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN205160274U (en) * | 2015-10-27 | 2016-04-13 | 东莞市银海塑胶电子有限公司 | Motor shaft's anti -disengaging structure |
CN205693496U (en) * | 2016-06-17 | 2016-11-16 | 浙江松上电机科技有限公司 | A kind of fan electromotor |
CN205681237U (en) * | 2016-06-23 | 2016-11-09 | 曾子斌 | One prevents axial movement of motor device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107453542A (en) * | 2017-08-14 | 2017-12-08 | 珠海格力电器股份有限公司 | Motor assembly |
CN107453542B (en) * | 2017-08-14 | 2023-10-27 | 珠海格力电器股份有限公司 | Motor assembly |
WO2019104646A1 (en) * | 2017-11-30 | 2019-06-06 | 深圳市大疆创新科技有限公司 | Motor structure and power assembly applied to unmanned aerial vehicle, and unmanned aerial vehicle |
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Application publication date: 20160831 |
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