CN207166244U - Insulation rotor and motor - Google Patents
Insulation rotor and motor Download PDFInfo
- Publication number
- CN207166244U CN207166244U CN201721155527.7U CN201721155527U CN207166244U CN 207166244 U CN207166244 U CN 207166244U CN 201721155527 U CN201721155527 U CN 201721155527U CN 207166244 U CN207166244 U CN 207166244U
- Authority
- CN
- China
- Prior art keywords
- rotor
- insulation
- connecting piece
- rotor shaft
- insulated connecting
- 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.)
- Withdrawn - After Issue
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
It the utility model is related to electric machine structure field, disclose a kind of insulation rotor and motor, the insulation rotor, including rotor core (4) and rotor shaft (1), the rotor core (4) is formed with centre bore (42), the insulated connecting piece (3) of the rotor shaft (1) outer wall is conformed between the inner hole wall and the rotor shaft (1) of the centre bore (42) filled with insulation, the reinforcement connector (2) for being fixed to the rotor shaft (1) is provided with the inside of the insulated connecting piece (3), it is arranged such, insulation rotor can effectively reduce the galvano-cautery of motor bearings.
Description
Technical field
The rotor structure of brushless electric machine is the utility model is related to, is turned more particularly to a kind of insulation rotor and with the insulation
The motor of son.
Background technology
Efficient brushless electric machine replaces use of the induction machine in field of air conditioning, be Trend of Energy Saving development in recent years must
Ask.On this kind of motor, permanent-magnet structure is fixed on the outer peripheral face of rotor core as required.In use, rotor core companion
Axle wears the axis of rotation for being connected in rotor core center, and rotor core surface produces induced electromotive force, also, because installation relation makes
Obtain rotor core, permanent magnetism and rotating shaft and be formed as equipotentiality body.
In order to do revolving support to rotating shaft, rotating shaft both ends are provided with bearing, and bearing inner race is with rotating shaft due to interference fit
Form equipotentiality body；Bearing outer ring contacts with the bearing chamber on motor.Due to above-mentioned installation relation cause bearing Internal and external cycle it
Between potential difference be present.When motor works (when especially working environment is more dried), the potential difference causes bearing internal external circle
Relatively rotate and corrode in rolling element surface-discharge, rolling element with the lasting generation electrostatic of discharge process, ultimately result in motor fortune
Abnormal sound be present during turning and bearing is scrapped in advance.
In the prior art, prevent bearing electrostatic corrosion means, as application publication number by CN106787313A public affairs
The insulation rotor structure opened, including permanet magnet, outer rotor yoke, internal rotor iron core, in outer rotor rim and internal rotor iron core
Between fill PBT plastic.In mode disclosed in the patent, equivalent to rotor core be divided into two layers (interior turn i.e. in patent
Sub- iron core and outer rotor yoke), fill insulant (PBT plastic filled) between two layers of rotor core, within causing
Rotor core and outer rotor yoke insulate, and prevent rotating shaft from forming equipotentiality body by contacting rotor core, and by the inner wrap strip of bearing
Electricity.
But rotor core will bear the radially power with axial direction simultaneously in the course of work, this requires above-mentioned layering to process
The internal layer of rotor core there is certain thickness to meet intensity requirement, consider the simplicity of manufacture, the modeling of insulation
Material fill part thickness receives larger limitation.
Therefore, rotor core is divided into the mode of Internal and external cycle and fill insulant, although bearing inner race electricity can be reduced
The increased situation of kinetic potential, but the thickness of the insulating materials causes bearing inner race electromotive force still inevitably to exist first, axle
Hold and still suffer from larger shaft voltage between Internal and external cycle.
Utility model content
The purpose of this utility model is to overcome above mentioned problem existing for prior art, there is provided a kind of insulation rotor and electricity
Machine, the insulation rotor can be effectively reduced due to noise of motor caused by bearing galvano-cautery.
To achieve these goals, on the one hand the utility model provides a kind of insulation rotor, including rotor core and rotor
Rotating shaft, the rotor core is formed with centre bore, filled with insulation between the inner hole wall of the centre bore and the rotor shaft
The insulated connecting piece of the rotor shaft outer wall is conformed to, is provided with the inside of the insulated connecting piece and is fixed to the rotor shaft
Reinforcement connector.
Preferably, the connecting portion strengthened connector be connected to the rotor shaft with including interference fit, and from
The junction surface that the connecting portion bends and is embedded in the insulated connecting piece to the axis direction for deviateing the rotor shaft.
Preferably, the end of the remote connecting portion at the junction surface has bent back portion.
Preferably, formed with multiple open-works being evenly distributed on the junction surface.
Preferably, the reinforcement connector is that metal is integrally formed part.
Preferably, along the axial direction of the rotor shaft, the insulation rotor includes arranged for interval and two be mutually symmetrical
The reinforcement connector.
Preferably, on the inner hole wall of the centre bore circumferentially uniform intervals be provided with it is multiple be used for increase it is described insulation connect
The projection and/or depression of fitting and the fitting area of the inner hole wall of the centre bore.
Preferably, it is circumferentially arranged on the periphery wall of the rotor core to have some spacing preiections, the adjacent limit convex
Magnetic shoe is bonded between rising.
Preferably, the rotor core includes multiple silicon steel sheets for laminating setting, and the insulated connecting piece, which has, to be resisted against
The limiting section at the silicon steel sheet stacking direction both ends.
The utility model second aspect provides a kind of motor, and the motor has above-mentioned insulation rotor.
Pass through above-mentioned technical proposal, the reinforcement connector that insulated connecting piece is set with its inner side jointly insulate rotor core
It is connected on rotor shaft, because insulated connecting piece directly contacts rotor shaft, the connection between rotor core and rotor shaft
Intensity is realized by reinforcement connector, and insulating properties is then ensured by insulated connecting piece.After the internal layer for saving rotor core, insulation
The thickness adjustment range increase of connector radially so that insulating properties of the rotor shaft between rotor core improves.
Brief description of the drawings
Fig. 1 is the assembly structure figure of insulation rotor；
Fig. 2 is the detonation configuration view vertically of insulation rotor；
Fig. 3 is the topology view for stacking the single silicon steel sheet for forming rotor core；
Fig. 4 is the topology view for strengthening connector.
Description of reference numerals
1- rotor shafts；2- strengthens connector；20- connecting portions；21- junction surfaces；22- bent back portions；23- open-works；3- insulate
Connector；30- clampings portion；31- limiting sections；4- rotor cores；40- is recessed；41- spacing preiections；42- centre bores；5- magnetic shoes.
Embodiment
Shown in as shown in Figure 1 to Figure 4, the utility model provides a kind of insulation rotor first, including rotor core 4, rotor turn
Axle 1 and the magnetic shoe 5 being bonded and fixed on the periphery wall of rotor core 4.Wherein：Formed with centre bore 42 on rotor core 4, turn
Sub- rotating shaft 1 passes through the centre bore 42, also, connects between the outer wall of the inner hole wall of centre bore 42 and rotor shaft 1 filled with insulation
Fitting 3, the insulated connecting piece 3 insulation is conformed on the outer wall of rotor shaft 1, with insulated separation rotor core 4 and rotor shaft
1, avoid both from being formed as equipotentiality body.The side for conforming to the outer wall of rotor shaft 1 of insulated connecting piece 3 is provided with and will connect rotor
Iron core 4 is fixed to the reinforcement connector 2 on rotor shaft 1 with the axial and circumferential of insulated connecting piece 3.
Specifically, with reference to shown in Fig. 1 and Fig. 2, the integrated through injection molding made of insulating materials such as generally plastics of insulated connecting piece 3
Part, it includes being used for the clamping portion 30 engaged with the inner hole wall of centre bore 42, and be axially located in the both ends in clamping portion 30
Limiting section 31.In the utility model, the preferably several silicon steel sheets (shown in Fig. 3) laminated vertically of rotor core 4, each silicon
The center of steel disc offers through hole, and after whole silicon steel plate stackings, whole through holes are collectively forming centre bore 42.Each silicon steel sheet leads to
The inner hole wall in hole is conformed on the periphery wall in clamping portion 30, and limiting section 31 is pressed on to be located at and laminated on the silicon steel sheet at direction both ends,
To keep the relation that laminates of whole silicon steel sheets, rotor core 4 is formed.Also, to form the spacing relation, the radial direction of limiting section 31
Size is greater than the size of through hole, in this way, can preferably insulated separation rotor core 4 and rotor shaft 1.
As shown in Figure 4, it is connected on rotor shaft 1 concrete structure of reinforcement connector 2 with including interference fit
Connecting portion 20, and from connecting portion 20 to deviate rotor shaft 1 axis direction bending joint portion 21, junction surface 21 it is remote
The end of connecting portion 20 has bent back portion 22.
Rotor core 4 rotates in the presence of electric current with magnetic field, and is exported the rotary motion by rotor shaft 1.
In the utility model, due to rotor core and be not directly contacted with rotor shaft 1, the substitute is insulated connecting piece 3 respectively with
Rotor core 4 and rotor shaft 1 contact, and therefore, the motion of rotor shaft 1 needs to transmit by insulated connecting piece 3.Therefore, may be used
With understanding, strengthen the setting purpose of connector 2, be to ensure that bonding strength meets that the use of insulation rotor will at two
Ask：First, its own bonding strength with insulated connecting piece 3；Second, the connection of connecting portion 20 and rotor shaft 1 thereon is strong
Degree.Therefore, strengthen connector 2 preferably part is integrally formed using metal, and the setting purpose of junction surface 21 and bent back portion 22
It is that therefore, both shapes are not limited to figure in order to strengthen the bonding strength for strengthening connector 2 itself with insulated connecting piece 3
The structure shown, it can also can arbitrarily realize the abnormally-structured of above-mentioned purpose.
The open-work 23 being evenly distributed is further provided with junction surface 21.Using insulated connecting piece 3 with strengthening connector 2
Substitute existing rotor core internal layer and add insulation plastic packaging, in addition to it can increase insulation effect, the beneficial effect of its another aspect
It is embodied in that the total quality of insulation rotor is lighter, and rotary inertia is smaller, when the motor where insulation rotor is by external drive,
The response sensitivity of insulation rotor with smaller rotary inertia is higher than the rotor structure that rotary inertia is larger under equal conditions.By
It is preceding described, in order to lift the bonding strength of insulated connecting piece 3 and rotor shaft 1, metal material is set in the inner side of insulated connecting piece 3
The reinforcement connector 2 of matter, this will certainly increase the quality of insulation rotor (it is understood that the density of metal is generally greater than exhausted
The density of edge elastomeric material), therefore, the introducing of this part metals material can further be reduced for insulation turn by opening up open-work 23
The influence of the rotary inertia of son.And be circumferentially uniformly arranged whole open-works 23, the barycenter of insulation rotor can be made positioned at its time
Where rotating shaft on straight line, revolution is more steady.Also, open-work 23, which can also further enhance, strengthens connector 2 and insulation connection
The bonding strength of part 3.
As it is further preferred that along the axial direction of rotor shaft 1, insulated connecting piece 3 is interior to be embedded with two arranged for interval simultaneously
The reinforcement connector 2 being mutually symmetrical.Especially when reinforcement connector 3 uses the structure with bent back portion 22 shown in Fig. 4, this
Place claims symmetrical, refers to that two overbending directions for strengthening the bent back portion 22 on connector 2 are away from one another to prevent insulation from connecting
Axial two of the fitting 3 along rotor shaft 1 are relatively reliable to play, axially position.
Circumferentially uniform intervals are disposed with multiple raised and/depression on the inner hole wall of centre bore 42, to increase rotor core 4
With the contact area of insulated connecting piece 3.Shown in Fig. 3 for use uniform depression 40, it should be appreciated that as long as meet increase
Add the structure of contact area this purpose, suitable for the utility model, it is not limited to the sunk structure of diagram, or it is single
Bulge-structure or two kinds of structures combination.
Circumferentially arranged on the periphery wall of rotor core 4 to have some spacing preiections 40, magnetic shoe 5 is installed according to insulation rotor
Motor involve a need to paste be fixed between adjacent spacing preiection 40.
The procedure of processing of insulation rotor of the present utility model given below, further to be explained to said structure：
Step 1: the connecting portion 20 of two reinforcement connectors 2 is formed into interference fit with rotor shaft 1, to form both
Between axial direction with it is circumferentially positioned；
Step 2: rotor core 4 is placed according to correct position relationship, to the inner hole wall and rotor shaft of centre bore 42
Injection forms insulated connecting piece 3 between 1 outer wall；
It is fixed to Step 3: magnetic shoe 5 is pasted on the outer wall of rotor core 4.
In addition, the utility model also provides a kind of motor, the rotor portion in it uses foregoing insulation rotor.
Preferred embodiment of the present utility model, still, the utility model and unlimited is described in detail above in association with accompanying drawing
In this.In range of the technology design of the present utility model, a variety of simple variants can be carried out to the technical solution of the utility model,
It is combined in any suitable manner including each particular technique feature, in order to avoid unnecessary repetition, the utility model
Various combinations of possible ways are no longer separately illustrated.But these simple variants and combination should equally be considered as the utility model institute
Disclosure, belong to the scope of protection of the utility model.
Claims (10)
1. a kind of insulation rotor, including rotor core (4) and rotor shaft (1), it is characterised in that rotor core (4) shape
Into there is centre bore (42), institute is conformed to filled with insulation between the inner hole wall and the rotor shaft (1) of the centre bore (42)
The insulated connecting piece (3) of rotor shaft (1) outer wall is stated, is provided with the inside of the insulated connecting piece (3) and is fixed to the rotor turn
The reinforcement connector (2) of axle (1).
2. insulation rotor according to claim 1, it is characterised in that the reinforcement connector (2) includes interference fit ground
The connecting portion (20) of the rotor shaft (1) is connected to, and from the connecting portion (20) to the deviation rotor shaft (1)
Axis direction bends and is embedded in the junction surface (21) in the insulated connecting piece (3).
3. insulation rotor according to claim 2, it is characterised in that the remote connecting portion of the junction surface (21)
(20) end has bent back portion (22).
4. insulation rotor according to claim 2, it is characterised in that on the junction surface (21) formed with it is multiple circumferentially
Uniform open-work (23).
5. insulation rotor according to claim 1, it is characterised in that the reinforcement connector (2) is integrally formed for metal
Part.
6. insulation rotor according to claim 1, it is characterised in that along the axial direction of the rotor shaft (1), the insulation
Two reinforcement connectors (2) that rotor includes arranged for interval and is mutually symmetrical.
7. insulation rotor according to claim 1, it is characterised in that circumferentially equal on the inner hole wall of the centre bore (42)
It is even to be arranged at intervals with multiple fitting areas for being used to increase the inner hole wall of the insulated connecting piece (3) and the centre bore (42)
Raised and/or depression.
8. insulation rotor according to claim 1, it is characterised in that on the periphery wall of the rotor core (4) circumferentially
Some spacing preiections (40) are provided with, magnetic shoe (5) is bonded between the adjacent spacing preiection (40).
9. insulation rotor as claimed in any of claims 1 to 8, it is characterised in that the rotor core (4) includes
Multiple silicon steel sheets for laminating setting, the insulated connecting piece (3), which has, is resisted against the spacing of the silicon steel sheet stacking direction both ends
Portion (31).
10. a kind of motor, it is characterised in that the motor has the insulation rotor described in any one in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721155527.7U CN207166244U (en) | 2017-09-11 | 2017-09-11 | Insulation rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721155527.7U CN207166244U (en) | 2017-09-11 | 2017-09-11 | Insulation rotor and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207166244U true CN207166244U (en) | 2018-03-30 |
Family
ID=61721229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721155527.7U Withdrawn - After Issue CN207166244U (en) | 2017-09-11 | 2017-09-11 | Insulation rotor and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207166244U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107492965A (en) * | 2017-09-11 | 2017-12-19 | 广东威灵电机制造有限公司 | Insulation rotor and motor |
-
2017
- 2017-09-11 CN CN201721155527.7U patent/CN207166244U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107492965A (en) * | 2017-09-11 | 2017-12-19 | 广东威灵电机制造有限公司 | Insulation rotor and motor |
| CN107492965B (en) * | 2017-09-11 | 2020-06-30 | 广东威灵电机制造有限公司 | Insulating rotor and motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180330 Effective date of abandoning: 20200630 |