CN206723068U - The PM rotor of draining pump and draining pump, washing machine comprising it - Google Patents
The PM rotor of draining pump and draining pump, washing machine comprising it Download PDFInfo
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- CN206723068U CN206723068U CN201720352252.XU CN201720352252U CN206723068U CN 206723068 U CN206723068 U CN 206723068U CN 201720352252 U CN201720352252 U CN 201720352252U CN 206723068 U CN206723068 U CN 206723068U
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- assembly
- permanent magnet
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- motor shaft
- bearing
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Abstract
The application is related to a kind of PM rotor of draining pump and draining pump, washing machine comprising it.The PM rotor of draining pump includes permanent magnet assembly, bearing assembly and impeller assembly, the permanent magnet assembly includes injection and forms overall motor shaft and permanent magnet, the bearing assembly is arranged between the permanent magnet assembly and the impeller assembly, and the motor shaft is through and out the bearing assembly；The impeller assembly is fixed-type to be stretched out on the part of the bearing assembly in the motor shaft.Using this PM rotor, there is the advantages of cost is low, noise is small, suitable for field of household appliances such as the draining pumps of washing machine.
Description
Technical field
The utility model is related to and be applied to family's electro-technical field, the PM rotor of more particularly to a kind of draining pump and comprising
Its draining pump, washing machine.
Background technology
Drainage pump of washing machine PM rotor in the market, its impeller either have a use in the magnetic core of permanent magnet
Start muscle and vibration isolation rubber in having in the accommodating chamber of starting and permanent magnet body rotor, accommodating chamber, although vibration isolation rubber can be to a certain degree
The strike note between startup muscle and vibration isolation rubber is reduced, so as to reduce noise during PM rotor rotation, but due to starting
The accessory size of muscle and vibration isolation rubber is difficult control, therefore noise when causing the PM rotor to rotate is difficult control.
Chinese patent CN 101408228B disclose the transmission between the rotor and working component of a kind of permagnetic synchronous motor
Device, the transmission device include the axle sleeve of connection armature spindle, the startup muscle protruded from the tubular body side wall of axle sleeve, have accommodating
The working component of the accommodating chamber of axle sleeve, from the first limit rib for accommodating cavity wall protrusion of working component, it is contained in accommodating chamber
Damping block, start and anticollision gap be provided between the top surface of muscle and the top surface of the first limit rib, so that axle sleeve revolves with armature spindle
When turning, prevent that starting muscle collides or rub with the first limit rib.This structure that accommodating chamber is set in impeller, it is impossible to keep away
Exempt from the impact noise of the rotor of permagnetic synchronous motor.
Chinese patent CN 202841037U disclose a kind of magnetic core actuating mechanism of alternating current permanent magnet synchronous water discharge pump motor,
Including p-m rotor, armature spindle and rotor axle sleeve, the tubular body lateral wall protrusion one of axle sleeve starts muscle, the magnetic core of p-m rotor
With an accommodating chamber that can house axle sleeve, accommodate chamber inner sidewall and protrude a limit rib, start muscle and interfere to be formed with limit rib
Two groups of interference surfaces, a damping elastomer body is installed in each group of interference surface, and damping elastomer body has towards the first arc for starting muscle
Face and the second cambered surface towards limit rib, start muscle or limit rib respectively with the first cambered surface or the second cambered surface with identical song
The globoidal structure of rate radius and the center of curvature.This structure that accommodating chamber is set in magnetic core, same inevitable permanent-magnet synchronous
The impact noise of the rotor of motor.
The noise during PM rotor rotation of drainage pump of washing machine how is preferably reduced, is turned into when previous very serious
Technical problem, traditional PM rotor can not preferably meet continue to develop industry requirement.
Utility model content
The application aims to provide a kind of a kind of permanent magnet for the draining pump that can reduce noise when PM rotor rotates
Rotor and draining pump, washing machine comprising it.
In order to solve the above technical problems, the technical scheme that the application provides is：A kind of PM rotor of draining pump, including
Permanent magnet assembly, bearing assembly and impeller assembly, the permanent magnet assembly include injection and form overall motor shaft and permanent magnet,
The bearing assembly is arranged between the permanent magnet assembly and the impeller assembly, and the motor shaft is through and out the axle
Bearing assembly；The impeller assembly is fixed-type to be stretched out on the part of the bearing assembly in the motor shaft.
Preferably, the motor shaft is fixedly installed on the inside of injection-moulded plastic and is axially located in the permanent magnet assembly
The heart, the both sides end face of the permanent magnet are plastic by the injection-moulded plastic.
Preferably, the bearing assembly has bearing, sealing drum and bearing bracket stand, and the motor shaft of the permanent magnet assembly passes through
The bearing, the motor shaft are provided with knurled portion or cut out portion in the outer end for stretching out the bearing assembly.
Preferably, the impeller assembly has boss in the end relative with the bearing assembly, the impeller assembly
Plastic components is molded or crimped in knurled portion or the cut out portion of the embedded motor shaft.
Preferably, the gap between the end face of the bearing bracket stand and the end face of the boss is 2.5mm~6mm.
Preferably, the impeller assembly includes blade, and the root of the blade is provided with dividing plate, is set on the dividing plate
It is equipped with least one through hole.Equally distributed back blades is provided with the another side of dividing plate, the height of the back blades is 0.5mm
~2mm.It is highly preferred that it is provided with breach on the inside of the blade.
The another aspect of the application is related to a kind of draining pump, including stator, motor, pump case and rotor, and rotor therein is
PM rotor as described above.
The application's relates in one aspect to a kind of washing machine, including draining pump as described above again.
According to such scheme it can be seen that the application has the following advantages that：Permanent magnet assembly is molded into an entirety, impeller
Annular knurl position or the cutting part of the motor shaft of permanent magnet assembly are molded or are crimped on, so that permanent magnet assembly and impeller
As an entirety, and bearing assembly is installed between permanent magnet assembly and impeller, bearing assembly is uniquely can axially to live
Dynamic part, for supporting fixed permanent magnet rotor.This technical scheme due to without traditional PM rotor magnetic core or
Startup muscle and vibration isolation rubber in accommodating chamber in impeller, both reduce cost, while reduce noise again.
Brief description of the drawings
Fig. 1 is a kind of assembling schematic diagram of the PM rotor of draining pump of the application.
Fig. 2 is a kind of structural representation of the PM rotor of draining pump of the application.
Fig. 3 is a kind of cut-away view of the PM rotor of draining pump of the application.
Fig. 4 is a kind of cut-away view of another embodiment of PM rotor of draining pump of the application.
Fig. 5 is a kind of blade wheel structure schematic diagram of the PM rotor of Fig. 1 to Fig. 4 of the application draining pump.
Fig. 6 is a kind of cut-away view of the another embodiment of PM rotor of draining pump of the application.
Brief description of the drawings：1st, permanent magnet assembly, 2, bearing assembly, 3, impeller assembly, 11, motor shaft, 12, permanent magnet, 13, note
Mould plastics, 21, bearing, 22, sealing drum, 23, bearing bracket stand, 31, plastic components, 32, boss, 33, the end face of boss, 34, blade,
35th, dividing plate, 36, through hole, 37, back blades, 38, breach, 111, knurled portion, 112, groove, 113, cut out portion, 231, bearing
The end face of frame
Embodiment
Application scheme is described in further detail below in conjunction with the accompanying drawings.
According to the PM rotor of the draining pump of the application, including permanent magnet assembly 1, bearing assembly 2 and impeller assembly 3,
Permanent magnet assembly 1 includes injection and forms overall motor shaft 11 and permanent magnet 12, and bearing assembly 2 is arranged on the He of permanent magnet assembly 1
Between impeller assembly 3, motor shaft 11 is through and out bearing assembly 2；Impeller assembly 3 is fixed-type to stretch out bearing in motor shaft 11
On the part of component 2.In this application, permanent magnet assembly is molded into an entirety, and impeller assembly is fixed on permanent magnet assembly
On motor shaft, so that permanent magnet assembly and impeller assembly also turn into an entirety, and in permanent magnet assembly and impeller assembly
Between bearing assembly is installed.Bearing assembly is uniquely can be relative to the part of motor shaft activity, for supporting fixed permanent magnetism
Body rotor.
The first embodiment of the PM rotor of draining pump with reference to shown in accompanying drawing 1, Fig. 2, Fig. 3 and Fig. 5, including
Permanent magnet assembly 1, bearing assembly 2 and impeller assembly 3, permanent magnet assembly 1 include motor shaft 11 and permanent magnet 12, the He of motor shaft 11
Permanent magnet 12 is molded into an entirety by injection-moulded plastic 13, and motor shaft 11 is fixedly installed on the inside of injection-moulded plastic 13 and its axle
To the center for being placed in permanent magnet assembly 1, it is plastic that the both sides end face of permanent magnet 12 is injection molding plastics 13；Bearing assembly 2 have bearing 21,
Sealing drum 22 and bearing bracket stand 23, the motor shaft 11 of permanent magnet assembly 1 pass through bearing 21, and motor shaft 11 is stretching out bearing assembly 2
Outer end is provided with knurled portion 111；Impeller assembly 3 has boss 32, the modeling of impeller assembly 3 in the end relative with bearing assembly 2
On the knurled portion 111 for expecting the embedded motor shaft 11 of the injection of part 31.Between between the end face 231 of bearing bracket stand and the end face 33 of boss
Gap L is 2.5mm~6mm, using the radial direction depanning neutral gear gap as impeller assembly 3.
The diameter of motor shaft 11 can be 3mm~4mm, and the length of knurled portion 111 can be 5mm~15mm.Permanent magnet
12 material is ferrite magnetic material, and it is shaped as diameter 17mm~21mm cylinder.Injection-moulded plastic 13 can be poly- first
Aldehyde plastics.The material of sealing drum 22 can be rubber.
Preferably, at least one groove 112, the plastic section of impeller assembly 3 are provided with the knurled portion 111 of motor shaft 11
Part 31 is embedded in the groove 112 of knurled portion 111.
Preferably, impeller assembly 3 can include such as four blades 34, and the root of blade 34 is provided with dividing plate 35, every
At least one through hole 36 is provided with plate 35.Equally distributed such as four back blades 37 are provided with the another side of dividing plate 35,
The height of back blades 37 is 0.5mm~2mm.Four inner sides of blade 34 are provided with breach 38.
The application another program is described in further detail below in conjunction with the accompanying drawings.
With reference to shown in accompanying drawing 1, Fig. 2, Fig. 4 and Fig. 5, a kind of PM rotor of draining pump includes permanent magnet assembly 1, axle
Bearing assembly 2 and impeller assembly 3, permanent magnet assembly 1 include motor shaft 11 and permanent magnet 12, and motor shaft 11 and permanent magnet 12 pass through note
Modeling plastics 13 are molded into an entirety, and motor shaft 11 is fixedly installed on the inside of injection-moulded plastic 13 and it is axially located at set of permanent magnets
The center of part 1, it is plastic that the both sides end face of permanent magnet 12 is injection molding plastics 13；Bearing assembly 2 has bearing 21, sealing drum 22 and bearing
Frame 23, the motor shaft 11 of permanent magnet assembly 1 pass through bearing 21, and motor shaft 11 is provided with notch in the outer end for stretching out bearing assembly 2
Divide 113；Impeller assembly 3 has boss 32 in the end relative with bearing assembly 2, and the plastic components 31 of impeller assembly 3 is molded embedding
Enter in the cut out portion 113 of motor shaft 11.Gap L between the end face 231 of bearing bracket stand and the end face 33 of boss for 2.5mm~
6mm, using the radial direction depanning neutral gear gap as impeller assembly 3.Wherein, the cut out portion 113 of motor shaft 11 is at least provided with one
It is individual.
A kind of two above technical scheme of the PM rotor of draining pump of the application, in specific application, in order that
The plastic components of impeller is smoothly embedded in the groove of knurled portion of motor shaft, or the smoothly cut out portion of embedded motor shaft
It is interior, to prevent impeller from being deformed in injection moulding process, or pull, preferably ensure between the end face of bearing bracket stand and the end face of boss
The radial direction depanning neutral gear gap L of injection molding impeller be 2.5mm~6mm.In practical application, with 4mm or so for optimal radial direction depanning
Neutral gear gap.
The application yet another aspect is described in further detail below in conjunction with the accompanying drawings.
With reference to shown in accompanying drawing 6, a kind of PM rotor of draining pump includes permanent magnet assembly 1, bearing assembly 2 and impeller sets
Part 3, permanent magnet assembly 1 include motor shaft 11 and permanent magnet 12, and motor shaft 11 and permanent magnet 12 are molded into by injection-moulded plastic 13
One entirety, motor shaft 11 is fixedly installed on the inside of injection-moulded plastic 13 and it is axially located at the center of permanent magnet assembly 1, permanent magnetism
It is plastic that the both sides end face of body 12 is injection molding plastics 13；Bearing assembly 2 has bearing 21, sealing drum 22 and bearing bracket stand 23, set of permanent magnets
The motor shaft 11 of part 1 passes through bearing 21, and motor shaft 11 is provided with knurled portion 111 in the outer end for stretching out bearing assembly 2；Impeller assembly
3 plastic components 31 is crimped on the knurled portion 111 of embedded motor shaft 11.
A kind of another technical scheme of the PM rotor of draining pump of the application, in specific application, it can also adopt
The mode that pressure connects so that the plastic components of impeller is smoothly embedded in the groove of knurled portion of motor shaft.Therefore the modeling of impeller
The knurled portion of material part and motor shaft belongs to interference fit.
The application further relates to a kind of draining pump, including stator, motor, pump case and rotor, and PM rotor therein is such as
Upper described any PM rotor.Because the application only relates to the improvement to PM rotor, without regard to miscellaneous part
Improvement, so being repeated no more to miscellaneous part.It is it is to be understood that equal according to the stator, motor and pump case of the draining pump of the application
For prior art, those skilled in the art are fully able to realize.
The application further relates to a kind of washing machine, including draining pump as described above.Because the application is only related to draining pump
Improvement, without regard to the improvement of miscellaneous part, so being repeated no more to miscellaneous part.It is to be understood that washing according to the application
The miscellaneous part of clothing machine is prior art, and those skilled in the art are fully able to realize.
The application and embodiments thereof are described above, this describe it is no restricted, shown in accompanying drawing also only
It is one of presently filed embodiment, actual structure is not limited thereto.All in all if the ordinary skill people of this area
Member is enlightened by it, similar to the technical scheme without designing for creativeness in the case where not departing from the application and creating objective
Frame mode and embodiment, the protection domain of the application all should be belonged to.
Claims (10)
1. a kind of PM rotor of draining pump, including permanent magnet assembly, bearing assembly and impeller assembly, it is characterised in that institute
Stating permanent magnet assembly includes motor shaft and permanent magnet that injection forms entirety, and the bearing assembly is arranged on the permanent magnet assembly
Between the impeller assembly, the motor shaft is through and out the bearing assembly；The impeller assembly is fixed-type in institute
Motor shaft is stated to stretch out on the part of the bearing assembly.
2. PM rotor according to claim 1, it is characterised in that the motor shaft is fixedly installed on injection-moulded plastic
Internal and be axially located at the center of the permanent magnet assembly, the both sides end face of the permanent magnet is plastic by the injection-moulded plastic.
3. PM rotor according to claim 1 or 2, it is characterised in that the bearing assembly has bearing, sealing drum
And bearing bracket stand, the motor shaft of the permanent magnet assembly pass through the bearing, the motor shaft is stretching out the outer of the bearing assembly
End is provided with knurled portion or cut out portion.
4. PM rotor according to claim 3, it is characterised in that the impeller assembly with the bearing assembly phase
To end there is boss, the knurled portion of the embedded motor shaft of plastic components injection or crimping of the impeller assembly or cut
On oral area point.
5. PM rotor according to claim 4, it is characterised in that the end face of the bearing bracket stand and the end of the boss
Gap between face is 2.5mm~6mm.
6. PM rotor according to claim 1 or 2, it is characterised in that the impeller assembly includes blade, and institute
The root for stating blade is provided with dividing plate, and at least one through hole is provided with the dividing plate.
7. PM rotor according to claim 6, it is characterised in that be provided with the another side of the dividing plate and uniformly divide
The back blades of cloth, the height of the back blades is 0.5mm~2mm.
8. PM rotor according to claim 6, it is characterised in that be provided with breach on the inside of the blade.
9. a kind of draining pump, including stator, motor, pump case and rotor, it is characterised in that the rotor is in claim 1-8
PM rotor described in any one.
10. a kind of washing machine, it is characterised in that including draining pump according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720352252.XU CN206723068U (en) | 2017-04-06 | 2017-04-06 | The PM rotor of draining pump and draining pump, washing machine comprising it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720352252.XU CN206723068U (en) | 2017-04-06 | 2017-04-06 | The PM rotor of draining pump and draining pump, washing machine comprising it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206723068U true CN206723068U (en) | 2017-12-08 |
Family
ID=60503735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720352252.XU Active CN206723068U (en) | 2017-04-06 | 2017-04-06 | The PM rotor of draining pump and draining pump, washing machine comprising it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206723068U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044426A (en) * | 2017-04-06 | 2017-08-15 | 无锡好力泵业有限公司 | The PM rotor of draining pump and the draining pump comprising it, washing machine |
| JP2021534343A (en) * | 2018-08-15 | 2021-12-09 | 青島海爾▲滾▼筒洗衣机有限公司Qingdao Haier Drum Washing Machine Co., Ltd. | The pump device and the cleaning device in which the pump device is located |
-
2017
- 2017-04-06 CN CN201720352252.XU patent/CN206723068U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044426A (en) * | 2017-04-06 | 2017-08-15 | 无锡好力泵业有限公司 | The PM rotor of draining pump and the draining pump comprising it, washing machine |
| JP2021534343A (en) * | 2018-08-15 | 2021-12-09 | 青島海爾▲滾▼筒洗衣机有限公司Qingdao Haier Drum Washing Machine Co., Ltd. | The pump device and the cleaning device in which the pump device is located |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Permanent magnet rotor of draining pump, draining pump comprising permanent magnet rotor and washing machine Effective date of registration: 20190729 Granted publication date: 20171208 Pledgee: Agricultural Bank of China Limited by Share Ltd Wuxi Huishan branch Pledgor: Wuxi Haoli Pumps Industrial Co., Ltd. Registration number: 2019990000785 |