CN207625378U - The rotor assembly and motor of anti-electrocorrosion - Google Patents
The rotor assembly and motor of anti-electrocorrosion Download PDFInfo
- Publication number
- CN207625378U CN207625378U CN201721613199.0U CN201721613199U CN207625378U CN 207625378 U CN207625378 U CN 207625378U CN 201721613199 U CN201721613199 U CN 201721613199U CN 207625378 U CN207625378 U CN 207625378U
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- 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.)
- Expired - Fee Related
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- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model 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, it is provided with first bearing installation position on first shaft part, it is provided with second bearing installation position on 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 utility model, can greatly reduce and even thoroughly eliminate shaft current, effectively reduce or even eliminate galvano-cautery phenomenon, improve bearing life.
Description
Technical field
The utility model belongs to technical field of motors, and in particular to a kind of rotor assembly and motor of anti-electrocorrosion.
Background technology
Motor at runtime, since rotor is in alternating magnetic field or due to magnetic circuit asymmetry etc., rotor core and rotor
Shaft voltage will be generated 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, thus motor front axle is held, armature spindle, electric motor back shaft are held and motor
Shaft current is formed between pedestal；In addition, after the oil film of bearing inner race and outer ring is breakdown, motor front axle hold 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 generate galvanic corrosion, to destroy the raceway of bearing, bearing life is made to shorten, while easily cause noise.
To solve the above-mentioned problems, a kind of processing mode in the prior art is as shown in Figure 1, using conductive tape, conducting wire
Equal conductive materials 3 ' are 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 realize the effect for reducing shaft current to damage of the bearing, but reducing effect is not satisfactory, especially to reduce shaft voltage
It is easy to fall off under external force, therefore galvano-cautery phenomenon is still more serious, axis since conductive material is set on the outside of motor
It is generally relatively low to hold the service life.
Utility model content
Therefore, the technical problem to be solved by the present invention is to provide a kind of rotor assembly of anti-electrocorrosion and motor,
It can greatly reduce and even be eliminated shaft current, effectively reduce or even eliminate galvano-cautery phenomenon, improve bearing life.
To solve the above-mentioned problems, the utility model provides a kind of rotor assembly of anti-electrocorrosion, including rotor core, turns
Sub- axis, the rotor core are set in outside the armature spindle, the armature spindle include the first shaft part and the second shaft part, described first
Be provided with first bearing installation position on shaft part, be provided with second bearing installation position on second shaft part, first shaft part and
The axially spaced setting of second shaft part, and being connected by insulating materials, first shaft part and/or the second shaft part with it is described
Rotor core is dielectrically separated from.
Further, the insulating materials is located in the axial length range of the rotor core.
Further, first shaft part and the second shaft part are filled out with the radial clearance at the rotor core mating connection
Filled with the insulating materials.
Further, first shaft part or the second shaft part are filled out with the radial clearance at the rotor core mating connection
Filled with the insulating materials.
Further, filled with described in the radial clearance at first shaft part and the rotor core mating connection
When insulating materials, the periphery of the part of second shaft part and the rotor core cooperation be provided with axially extending raised line and with
The rotor core interference fit；Or, when second shaft part is filled out with the radial clearance at the rotor core mating connection
When filled with the insulating materials, the periphery of the part of first shaft part and the rotor core cooperation is provided with axially extending
Raised line and with the rotor core be interference fitted.
Further, filled with described in the radial clearance at first shaft part and the rotor core mating connection
When insulating materials, first shaft part is matched more than the second shaft part with the rotor core with the rotor core mating connection length
Close connection length；Or, working as in the radial clearance at second shaft part and the rotor core mating connection filled with described exhausted
When 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 utility model also provides a kind of motor, including rotor assembly, and the rotor assembly is any of the above-described technical solution
Described in anti-electrocorrosion rotor assembly.
Further, the motor is plastic packaging motor.
A kind of rotor assembly of anti-electrocorrosion provided by the utility model, due to first shaft part and the second shaft part it
Between filled in insulating materials, the insulating materials is while realizing insulating effect, additionally it is possible to by first shaft part and second
Shaft part is connected as one, motor front axle is held, armature spindle, electric motor back shaft are held and motor base be formed by shaft current closed circuit by
The place of filling in of insulating materials is fully disconnected or part disconnects, thus can greatly be reduced and even be eliminated shaft current, and effectively reduction is
To galvano-cautery phenomenon is eliminated, bearing life is improved, reduces the noise generated at bearing, meanwhile, it eliminates conventionally employed outer
The hidden danger that portion's conductive material is easy to fall off.
Description of the drawings
Fig. 1 is the structural schematic diagram of the prior art；
Fig. 2 is the assembling schematic diagram that the utility model discloses rotor assembly；
Fig. 3 is a kind of structural schematic diagram that the utility model discloses rotor assembly；
Fig. 4 is another structural schematic diagram that the utility model discloses rotor assembly；
Fig. 5 is another structural schematic diagram that the utility model discloses rotor assembly；
Fig. 6 is a kind of internal structure schematic diagram that the utility model discloses motor.
Reference numeral is expressed as：
1 ', drive end bearing bracket；2 ', rear end cap；3 ', conductive material；1, magnetic shoe；2, rotor core；3, armature spindle；31, first axle
Hold installation position；32, second bearing installation position；33, the first shaft part；34, the second shaft part；35, insulating materials.
Specific implementation mode
In conjunction with referring to shown in Fig. 2 to 5, the utility model embodiment provides a kind of rotor assembly of anti-electrocorrosion, including magnetic
Watt 1, rotor core 2, armature spindle 3, the magnetic shoe 1, rotor core 2 are sequentially sleeved at outside the armature spindle 3, the armature spindle 3
Including the first shaft part 33 and the second shaft part 34, first bearing installation position 31, second axis are provided on first shaft part 33
It is provided with second bearing installation position 32 in section 34, to realize the assembly connection of rotor and motor, first shaft part 33 and described
Second shaft part, 34 axially spaced setting, and being connected by insulating materials 35, first shaft part, 33 and/or second shaft part 34 with
The rotor core 2 is dielectrically separated from.Since the technical solution has been filled in absolutely between first shaft part, 33 and second shaft part 34
Edge material 35, the insulating materials 35 is while realizing insulating effect, additionally it is possible to by first shaft part, 33 and second shaft part
34 are connected as one, and motor front axle is held, armature spindle, electric motor back shaft are held and motor base is formed by shaft current closed circuit by exhausted
The place of filling in of edge material 35 is fully disconnected or part disconnects, thus can greatly be reduced and even be eliminated shaft current, and effectively reduction is
To galvano-cautery phenomenon is eliminated, bearing life is improved, reduces the noise generated at bearing, meanwhile, it eliminates conventionally employed outer
The hidden danger that portion's conductive material is easy to fall off.
In the present embodiment, when the insulating materials 35 is in the axial length range of the rotor core 2, need
First shaft part, 33 and second shaft part 34 fills the insulation material with the radial clearance at 2 mating connection of the rotor core
Material 35 prevents shaft current in insulation material to realize the insulation of 33 and second shaft part 34 and the rotor core 2 of first shaft part
35 places of filling in of material detour forms the closed circuit of shaft current to the rotor core 2 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 will be at first shaft part, 33 or second shaft part 34 and 2 mating connection of the 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 the 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
It improves.
In such cases, first shaft part, 33 and second shaft part 34 can with the fit system of 2 endoporus of the rotor core
With multiple choices, for example, when first shaft part 33 is filled with the radial clearance at 2 mating connection of the rotor core
When the insulating materials 35, the periphery of the part that second shaft part 34 and the rotor core 2 coordinate is provided with axially extending
Raised line and with the rotor core 2 be interference fitted；Alternatively, when second shaft part 34 and the rotor core 2 are connected
When being filled with the insulating materials 35 in the radial clearance at place, the part of first shaft part 33 and the cooperation of the rotor core 2
Periphery be provided with axially extending raised line and with the rotor core 2 be interference fitted, cross section can be triangle, rectangle
Etc. shapes, realize the installation of the shaft part and the rotor core 2, simplify cooperation installation process.
The bond strength for considering first shaft part, 33 and second shaft part 34 and the cooperation installation of the rotor core 2, works as institute
It is described when stating the first shaft part 33 in the radial clearance at 2 mating connection of the rotor core filled with the insulating materials 35
First shaft part 33 is more than the second shaft part 34 with 2 mating connection length of the rotor core and is grown with the mating connection of the rotor core 2
Degree；Or, working as second shaft part 34 and being filled with the insulating materials in the radial clearance at 2 mating connection of the rotor core
When 35, second shaft part 34 is matched more than the first shaft part 33 with the rotor core 2 with 2 mating connection length of the rotor core
Close connection length.
The insulating materials 35 filled in above-mentioned technical proposal is preferably vibration-absorptive material such as rubber, at this point, the insulating materials
35 not only have the function of insulation, connection, can also play cushioning effect to the first shaft part 33 and the second shaft part 34.
In conjunction with shown in Figure 6, the utility model embodiment also provides a kind of motor, including rotor assembly, the rotor
Component is a kind of rotor assembly of anti-electrocorrosion disclosed in above-mentioned any one technical solution.The motor is preferably plastic packaging
Motor.
Those skilled in the art will readily recognize that under the premise of not conflicting, above-mentioned each advantageous manner can be free
Ground combination, superposition.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all in this practicality
All any modification, equivalent and improvement etc., should be included in the guarantor of the utility model made by within novel spirit and principle
Within the scope of shield.Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill of the art
For personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these improvement
The scope of protection of the utility model is also should be regarded as with modification.
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, which is characterized in that and the armature spindle (3) includes the first shaft part (33) and the second shaft part (34), and described the
It is provided with first bearing installation position (31) on one shaft part (33), second bearing installation position is provided on 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, which is characterized in that the insulating materials (35) is located at the rotor core
(2) in axial length range.
3. rotor assembly according to claim 2, which is characterized in that first shaft part (33) and the second shaft part (34) with
The insulating materials (35) is filled in radial clearance at rotor core (2) mating connection.
4. rotor assembly according to claim 2, which is characterized in that first shaft part (33) or the second shaft part (34) with
The insulating materials (35) is filled in radial clearance at rotor core (2) mating connection.
5. rotor assembly according to claim 4, which is characterized in that when first shaft part (33) and the rotor core
(2) when being filled with the insulating materials (35) in the radial clearance at mating connection, second shaft part (34) and the rotor
The periphery of the part of iron core (2) cooperation is provided with axially extending raised line and is interference fitted with the rotor core (2)；Or, working as
The insulating materials (35) is filled in radial clearance at second shaft part (34) and the rotor core (2) mating connection
When, the periphery of the part of first shaft part (33) and the rotor core (2) cooperation be provided with axially extending raised line and with
Rotor core (2) interference fit.
6. rotor assembly according to claim 4, which is characterized in that when first shaft part (33) and the rotor core
(2) when being filled with the insulating materials (35) in 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 the
Two shaft parts (34) are with the insulating materials (35) are filled in the radial clearance at the rotor core (2) mating connection when, institute
It states the second shaft part (34) and is 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, which is characterized in that the insulating materials (35) is
Vibration-absorptive material.
8. a kind of motor, including rotor assembly, which is characterized in that the rotor assembly is any one of claim 1 to 7 institute
A kind of rotor assembly for the anti-electrocorrosion stated.
9. motor according to claim 8, which is characterized in that the motor is plastic packaging motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721613199.0U CN207625378U (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 |
|---|---|---|---|
| CN201721613199.0U CN207625378U (en) | 2017-11-28 | 2017-11-28 | The rotor assembly and motor of anti-electrocorrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207625378U true CN207625378U (en) | 2018-07-17 |
Family
ID=62824241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721613199.0U Expired - Fee Related CN207625378U (en) | 2017-11-28 | 2017-11-28 | The rotor assembly and motor of anti-electrocorrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207625378U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959374A (en) * | 2017-11-28 | 2018-04-24 | 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 |
| CN114552829A (en) * | 2020-11-20 | 2022-05-27 | 群光电能科技(台州)有限公司 | Motor |
-
2017
- 2017-11-28 CN CN201721613199.0U patent/CN207625378U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959374A (en) * | 2017-11-28 | 2018-04-24 | 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 |
| CN114552829A (en) * | 2020-11-20 | 2022-05-27 | 群光电能科技(台州)有限公司 | Motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180717 Termination date: 20211128 |