CN107959374A - The rotor assembly and motor of anti-electrocorrosion - Google Patents
The rotor assembly and motor of anti-electrocorrosion Download PDFInfo
- Publication number
- CN107959374A CN107959374A CN201711212366.5A CN201711212366A CN107959374A CN 107959374 A CN107959374 A CN 107959374A CN 201711212366 A CN201711212366 A CN 201711212366A CN 107959374 A CN107959374 A CN 107959374A
- Authority
- CN
- China
- Prior art keywords
- shaft part
- rotor core
- rotor
- insulating materials
- mating connection
- 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
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
- H02K7/003—Couplings; Details of shafts
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention provides a kind of rotor assembly and motor of anti-electrocorrosion, the rotor assembly includes rotor core, armature spindle, the rotor core is set in outside the armature spindle, the armature spindle includes the first shaft part and the second shaft part, clutch shaft bearing installation position is provided with first shaft part, second bearing installation position is provided with second shaft part, first shaft part and the axially spaced setting of the second shaft part, and connected by insulating materials, first shaft part and/or the second shaft part are dielectrically separated from the rotor core.Rotor assembly according to the present invention, can greatly reduce and even thoroughly eliminate shaft current, effectively reduce or even eliminate galvano-cautery phenomenon, improve bearing life.
Description
Technical field
The invention belongs to technical field of motors, and in particular to the rotor assembly and motor of a kind of anti-electrocorrosion.
Background technology
Motor operationally, due to rotor in alternating magnetic field or in the reasons such as magnetic circuit asymmetry, rotor core and rotor
Shaft voltage will be produced on axis, since rotor core is connected with armature spindle, armature spindle is connected with bearing inner race again, although bearing
Inner ring can carry out insulation processing with outer ring by grease, but after shaft voltage reaches certain numerical value, due to the inside and outside circle voltage of bearing
Difference is excessive, and the oil film of bearing inner race and outer ring can be breakdown, so as to be held and motor in motor fore bearing, armature spindle, electric motor back shaft
Shaft current is formed between pedestal；In addition, after the oil film of bearing inner race and outer ring is breakdown, motor fore bearing or rear bearing,
Also corresponding shaft current, table of the shaft current in bearing ball are easily formed between armature spindle, rotor core and magnetic shoe, stator core
Face will produce galvanic corrosion, so as to destroy the raceway of bearing, shorten bearing life, while easily cause noise.
To solve the above-mentioned problems, a kind of processing mode of the prior art is as shown in Figure 1, using conductive tape, conducting wire
Deng conductive material 3 ' by the drive end bearing bracket 1 ' of motor, the connection conducting of rear end cap 2 ', although which can reduce between bearing internal external circle
Voltage difference, so as to reduce shaft voltage, realizing reduces effect of the shaft current to damage of the bearing, but reducing effect is not satisfactory, especially
It is easy to come off under external force, therefore galvano-cautery phenomenon is still more serious, axis since conductive material is arranged on the outside of motor
It is generally relatively low to hold the service life.
The content of the invention
Therefore, the technical problem to be solved in the present invention is the rotor assembly and motor for providing a kind of anti-electrocorrosion, can be with
Greatly reduce and even eliminate shaft current, effectively reduce or even eliminate galvano-cautery phenomenon, improve bearing life.
To solve the above-mentioned problems, the present invention provides a kind of rotor assembly of anti-electrocorrosion, including rotor core, rotor
Axis, the rotor core are set in outside the armature spindle, and the armature spindle includes the first shaft part and the second shaft part, the first axle
Clutch shaft bearing installation position is provided with section, second bearing installation position, first shaft part and institute are provided with second shaft part
State the axially spaced setting of the second shaft part, and connected by insulating materials, first shaft part and/or the second shaft part with described turn
Sub- core insulation isolation.
Further, the insulating materials is located in the axial length range of the rotor core.
Further, first shaft part and the second shaft part in the radial clearance at the rotor core mating connection with filling out
Filled with the insulating materials.
Further, first shaft part or the second shaft part in the radial clearance at the rotor core mating connection with filling out
Filled with the insulating materials.
Further, when first shaft part is described with being filled with the radial clearance at the rotor core mating connection
During insulating materials, the periphery of the part that second shaft part and the rotor core coordinate be provided with axially extending raised line and with
The rotor core interference fit；Or, when second shaft part in the radial clearance at the rotor core mating connection with filling out
During filled with the insulating materials, the periphery of the part that first shaft part and the rotor core coordinate is provided with axially extending
Raised line and with the rotor core be interference fitted.
Further, when first shaft part is described with being filled with the radial clearance at the rotor core mating connection
During insulating materials, first shaft part is matched somebody with somebody with the rotor core mating connection length more than the second shaft part with the rotor core
Close connection length；Or, when second shaft part is described exhausted with being filled with the radial clearance at the rotor core mating connection
During edge material, second shaft part is more than the first shaft part with the rotor core mating connection length and coordinates with the rotor core
Connection length.
Further, the insulating materials is vibration-absorptive material.
The present invention also provides a kind of motor, including rotor assembly, the rotor assembly is institute in any of the above-described technical solution
The rotor assembly for the anti-electrocorrosion stated.
Further, the motor is plastic packaging motor.
The rotor assembly of a kind of anti-electrocorrosion provided by the invention, due to being filled out between first shaft part and the second shaft part
Insulating materials is noted, the insulating materials is while insulating effect is realized, additionally it is possible to by first shaft part and the second shaft part
It is connected as one, the shaft current closed circuit that motor fore bearing, armature spindle, electric motor back shaft are held and motor base is formed is by insulating
The place of filling in of material is fully disconnected or part disconnects, thus can greatly reduce or even eliminate shaft current, is effectively reduced or even is disappeared
Except galvano-cautery phenomenon, bearing life is improved, reduces the noise produced at bearing, meanwhile, eliminate conventionally employed outside and lead
Electric material holds caducous hidden danger.
Brief description of the drawings
Fig. 1 is the structure diagram of the prior art；
Fig. 2 is the assembling schematic diagram that the present invention discloses rotor assembly；
Fig. 3 is a kind of structure diagram that the present invention discloses rotor assembly；
Fig. 4 is another structure diagram that the present invention discloses rotor assembly；
Fig. 5 is another structure diagram that the present invention discloses rotor assembly；
Fig. 6 is a kind of internal structure schematic diagram that the present invention discloses motor.
Reference numeral is expressed as：
1 ', drive end bearing bracket；2 ', rear end cap；3 ', conductive material；1st, magnetic shoe；2nd, rotor core；3rd, armature spindle；31st, first axle
Hold installation position；32nd, second bearing installation position；33rd, the first shaft part；34th, the second shaft part；35th, insulating materials.
Embodiment
With reference to shown in referring to Fig. 2 to 5, a kind of rotor assembly of anti-electrocorrosion of offer of the embodiment of the present invention, including magnetic shoe 1,
Rotor core 2, armature spindle 3, the magnetic shoe 1, rotor core 2 are sequentially sleeved at outside the armature spindle 3, and the armature spindle 3 includes
First shaft part 33 and the second shaft part 34, are provided with clutch shaft bearing installation position 31, second shaft part 34 on first shaft part 33
On be provided with second bearing installation position 32, to realize the assembly connection of rotor and motor, first shaft part 33 and described second
34 axially spaced setting of shaft part, and being connected by insulating materials 35,33 and/or second shaft part 34 of the first shaft part with it is described
Rotor core 2 is dielectrically separated from.Since the technical solution has filled in insulation material between 33 and second shaft part 34 of the first shaft part
Material 35, the insulating materials 35 is while insulating effect is realized, additionally it is possible to connects first shaft part 33 and the second shaft part 34
One is connected in, the shaft current closed circuit that motor fore bearing, armature spindle, electric motor back shaft are held and motor base is formed is by insulation material
The place of filling in of material 35 is fully disconnected or part disconnects, thus can greatly reduce or even eliminate shaft current, is effectively reduced or even is disappeared
Except galvano-cautery phenomenon, bearing life is improved, reduces the noise produced at bearing, meanwhile, eliminate conventionally employed outside and lead
Electric material holds caducous hidden danger.
In the present embodiment, when the insulating materials 35 is in the axial length range of the rotor core 2, it is necessary to
First shaft part, 33 and second shaft part 34 in the radial clearance at 2 mating connection of rotor core with filling the insulation material
Material 35, to realize 33 and second shaft part 34 of the first shaft part and the insulation of the rotor core 2, prevents shaft current in insulation material
35 places of filling in of material detour to the rotor core 2 forms the closed circuit of shaft current again.The technical program can thoroughly be cut off
The possible circuit loop of shaft current, completely eliminates the generation of shaft current, maximum to the protection of motor bearings.
It is of course also possible to only by 33 or second shaft part 34 of the first shaft part and 2 mating connection of rotor core
The insulating materials 35 is filled in radial clearance, can also realize the partial cut effect of shaft current closed circuit.The technical program
In due to being filled with the insulating materials 35 with 2 mating surface of rotor core in first shaft part, 33 or second shaft part 34,
The circuit loop of partial partition shaft current, reduces the galvano-cautery phenomenon to ball in bearing, to the protection of motor bearings
Improve.
In such cases, 33 and second shaft part 34 of the first shaft part can with the fit system of 2 endoporus of rotor core
With multiple choices, such as, when first shaft part 33 in the radial clearance at 2 mating connection of rotor core with being filled with
During the insulating materials 35, the periphery of the part that second shaft part 34 coordinates with the rotor core 2 is provided with axially extending
Raised line and be interference fitted with the rotor core 2；Alternatively, when second shaft part 34 is connected with the rotor core 2
When the insulating materials 35 is filled with the radial clearance at place, first shaft part 33 and the part of the rotor core 2 cooperation
Periphery be provided with axially extending raised line and be interference fitted with the rotor core 2, its cross section can be triangle, rectangle
Etc. shape, the installation of the shaft part and the rotor core 2 is realized, simplify and coordinate installation process.
Consider that 33 and second shaft part 34 of the first shaft part coordinates the bond strength of installation with the rotor core 2, work as institute
It is described when stating the first shaft part 33 with being filled with the insulating materials 35 in the radial clearance at 2 mating connection of rotor core
First shaft part 33 is more than the second shaft part 34 with the 2 mating connection length of rotor core and is grown with the rotor core 2 mating connection
Degree；Or, when second shaft part 34 in the radial clearance at 2 mating connection of rotor core with being filled with the insulating materials
When 35, second shaft part 34 is matched somebody with somebody with the 2 mating connection length of rotor core more than the first shaft part 33 with the rotor core 2
Close connection length.
The insulating materials 35 filled in above-mentioned technical proposal is preferably vibration-absorptive material such as rubber, at this time, the insulating materials
35 not only have the function that insulation, connection, can also play cushioning effect to the first shaft part 33 and the second shaft part 34.
With reference to shown in Figure 6, the embodiment of the present invention also provides a kind of motor, including rotor assembly, the rotor assembly
For a kind of rotor assembly of anti-electrocorrosion disclosed in above-mentioned any one technical solution.The motor is preferably plastic packaging electricity
Machine.
For those skilled in the art it is easily understood that on the premise of not conflicting, above-mentioned each advantageous manner can be free
Ground combination, superposition.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made within principle etc., should all be included in the protection scope of the present invention.Above only
It is the preferred embodiment of the present invention, it is noted that for those skilled in the art, do not departing from this hair
On the premise of bright technical principle, some improvement and modification can also be made, these improvements and modifications also should be regarded as the guarantor of the present invention
Protect scope.
Claims (9)
1. a kind of rotor assembly of anti-electrocorrosion, including rotor core (2), armature spindle (3), the rotor core (2) are set in
The armature spindle (3) is outside, it is characterised in that and the armature spindle (3) includes the first shaft part (33) and the second shaft part (34), and described
Clutch shaft bearing installation position (31) is provided with one shaft part (33), second bearing installation position is provided with second shaft part (34)
(32), first shaft part (33) and second shaft part (34) axially spaced setting, and connected by insulating materials (35),
First shaft part (33) and/or the second shaft part (34) are dielectrically separated from the rotor core (2).
2. rotor assembly according to claim 1, it is characterised in that the insulating materials (35) is located at the rotor core
(2) in axial length range.
3. rotor assembly according to claim 2, it is characterised in that first shaft part (33) and the second shaft part (34) with
The insulating materials (35) is filled with radial clearance at rotor core (2) mating connection.
4. rotor assembly according to claim 2, it is characterised in that first shaft part (33) or the second shaft part (34) with
The insulating materials (35) is filled with radial clearance at rotor core (2) mating connection.
5. rotor assembly according to claim 4, it is characterised in that when first shaft part (33) and the rotor core
(2) when the insulating materials (35) are filled with the radial clearance at mating connection, second shaft part (34) and the rotor
The periphery for the part that iron core (2) coordinates is provided with axially extending raised line and is interference fitted with the rotor core (2)；Or, work as
Second shaft part (34) in the radial clearance at the rotor core (2) mating connection with being filled with the insulating materials (35)
When, the periphery of the part that first shaft part (33) and the rotor core (2) coordinate be provided with axially extending raised line and with
Rotor core (2) interference fit.
6. rotor assembly according to claim 4, it is characterised in that when first shaft part (33) and the rotor core
(2) when the insulating materials (35) are filled with the radial clearance at mating connection, first shaft part (33) and the rotor
Iron core (2) mating connection length is more than the second shaft part (34) and the rotor core (2) mating connection length；Or, when described
When two shaft parts (34) in the radial clearance at the rotor core (2) mating connection with being filled with the insulating materials (35), institute
State the second shaft part (34) and be more than the first shaft part (33) and the rotor core (2) with the rotor core (2) mating connection length
Mating connection length.
7. rotor assembly as claimed in any of claims 1 to 6, it is characterised in that the insulating materials (35) is
Vibration-absorptive material.
8. a kind of motor, including rotor assembly, it is characterised in that the rotor assembly is any one institute in claim 1 to 7
A kind of rotor assembly for the anti-electrocorrosion stated.
9. motor according to claim 8, it is characterised in that the motor is plastic packaging motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711212366.5A CN107959374A (en) | 2017-11-28 | 2017-11-28 | The rotor assembly and motor of anti-electrocorrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711212366.5A CN107959374A (en) | 2017-11-28 | 2017-11-28 | The rotor assembly and motor of anti-electrocorrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107959374A true CN107959374A (en) | 2018-04-24 |
Family
ID=61962335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711212366.5A Pending CN107959374A (en) | 2017-11-28 | 2017-11-28 | The rotor assembly and motor of anti-electrocorrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107959374A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114421701A (en) * | 2022-01-28 | 2022-04-29 | 上海纳铁福传动***有限公司 | Motor rotor and motor |
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| CN105811644A (en) * | 2016-03-10 | 2016-07-27 | 南京高传机电自动控制设备有限公司 | Insulating transmission shaft for connecting with motor and gear case |
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| CN206506374U (en) * | 2017-03-14 | 2017-09-19 | 浙江旭扬机电有限公司 | A kind of good brushless, permanently excited direct current motor of stability that insulate |
| CN206595808U (en) * | 2017-03-31 | 2017-10-27 | 中材高新成都能源技术有限公司 | A kind of electric machine structure for preventing shaft current generation |
| CN207625378U (en) * | 2017-11-28 | 2018-07-17 | 珠海格力节能环保制冷技术研究中心有限公司 | The rotor assembly and motor of anti-electrocorrosion |
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- 2017-11-28 CN CN201711212366.5A patent/CN107959374A/en active Pending
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| CN201388093Y (en) * | 2009-03-24 | 2010-01-20 | 广东威灵电机制造有限公司 | Permanent magnet rotor for motor |
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| JP2012019580A (en) * | 2010-07-06 | 2012-01-26 | Mitsubishi Electric Corp | Electric motor rotor, method for manufacturing electric motor and electric motor rotor and air conditioner |
| CN102157995A (en) * | 2011-04-13 | 2011-08-17 | 康平科技(苏州)有限公司 | Electromechanical rotor |
| JP2013120038A (en) * | 2011-12-08 | 2013-06-17 | Mitsubishi Electric Corp | Air conditioner |
| CN202488235U (en) * | 2012-02-14 | 2012-10-10 | 上海惠深工具科技有限公司 | Series-excited motor rotor applying short drivepipe technology |
| CN103401383A (en) * | 2013-08-05 | 2013-11-20 | 瑞安市宏发电器有限公司 | Rotor with insulated rotor shaft and iron core and starter of relevant motor |
| CN204089380U (en) * | 2014-06-26 | 2015-01-07 | 佛山市威灵洗涤电机制造有限公司 | Rotor assembly and the motor with it |
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| JP2016194286A (en) * | 2015-04-01 | 2016-11-17 | 株式会社東芝 | Insulating spacer of rotor of rotating electrical machine |
| CN104967233A (en) * | 2015-06-30 | 2015-10-07 | 安徽博隆节能电器有限公司 | High-safety switched reluctance motor |
| CN105811644A (en) * | 2016-03-10 | 2016-07-27 | 南京高传机电自动控制设备有限公司 | Insulating transmission shaft for connecting with motor and gear case |
| CN206506374U (en) * | 2017-03-14 | 2017-09-19 | 浙江旭扬机电有限公司 | A kind of good brushless, permanently excited direct current motor of stability that insulate |
| CN206595808U (en) * | 2017-03-31 | 2017-10-27 | 中材高新成都能源技术有限公司 | A kind of electric machine structure for preventing shaft current generation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114421701A (en) * | 2022-01-28 | 2022-04-29 | 上海纳铁福传动***有限公司 | Motor rotor and motor |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180424 |