CN101826768A - The bearing housing supporting structure of brshless DC motor - Google Patents
The bearing housing supporting structure of brshless DC motor Download PDFInfo
- Publication number
- CN101826768A CN101826768A CN201010121359A CN201010121359A CN101826768A CN 101826768 A CN101826768 A CN 101826768A CN 201010121359 A CN201010121359 A CN 201010121359A CN 201010121359 A CN201010121359 A CN 201010121359A CN 101826768 A CN101826768 A CN 101826768A
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- China
- Prior art keywords
- bearing housing
- mentioned
- brshless
- motor
- pressed
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/15—Mounting arrangements for bearing-shields or end plates
-
- 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
- H02K7/08—Structural association with bearings
- H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Frames (AREA)
- Brushless Motors (AREA)
Abstract
The present invention relates to the bearing housing supporting structure of brshless DC motor, in more detail, relate to following bearing housing supporting structure: in the outer-rotor type brshless DC motor, bearing housing directly is pressed into (filling in by force) to stator lasmination and fixing, make that assembling is simple, reduce parts, thereby reduce manufacturing expense.The bearing housing supporting structure of brshless DC motor of the present invention will be accommodated in brshless DC motor and be rotated freely that the bearing housing of the bearing of supporting rotating shaft is fixed on the stator lasmination, it is characterized in that, on the said stator lamination, form the inside diameter that is pressed into above-mentioned bearing housing, the outer diameter part of above-mentioned bearing housing is pressed into the inside diameter of said stator lamination, and above-mentioned thus bearing housing is fixedly attached on the said stator lamination.
Description
Technical field
The present invention relates to the bearing housing supporting structure of brshless DC motor, in more detail, relate to following bearing housing supporting structure: in the outer-rotor type brshless DC motor, bearing housing directly is pressed into (filling in by force) to stator lasmination and fixing, make that assembling is simple, reduce parts, thereby reduce manufacturing expense.
Background technology
Usually, as brshless DC motor, inner-rotor type (Inner rotor type) brshless DC motor and outer-rotor type (outer rotor type) brshless DC motor are arranged, the structure of above-mentioned outer-rotor brushless direct current machine is to be configured in outside rotor rotation, above-mentioned outer-rotor brushless direct current machine comprises: stator, and it is made of the core by forming at coiling coil on radial a plurality of grooves (below become " core assembly "); And rotor, it constitutes by annular or circular magnet with the rotor yoke of above-mentioned magnet attached to inner peripheral surface, the outer peripheral face of above-mentioned magnet and above-mentioned core assembly separates certain intervals (space part) and opposed with above-mentioned core assembly, and is fixedly connected with the rotating shaft that makes above-mentioned rotor rotation at the central part of above-mentioned rotor yoke.
The structure of general outer-rotor brushless direct current machine is, above-mentioned core assembly portion in the central fixedly adheres to bearing housing, and on the inner peripheral surface of above-mentioned bearing housing bearing is set, this bearing is used for the rotatably mounted rotating shaft that is fixedly connected on the central part of above-mentioned rotor yoke.
Aforesaid outer-rotor brushless direct current machine (hereinafter referred to as " brshless DC motor ") generally is used for the spindle motor of disk drive device (being designated hereinafter simply as device) etc.
Illustrate that with reference to Fig. 1 the core assembly of existing brshless DC motor and bearing support structure are as follows.
As shown in Figure 1, existing brshless DC motor constitutes and comprises: stator, and it is made of the core assembly 100 that forms by coiling coil 120 on radial core 110; And rotor, it constitutes by magnet 220 with the rotor yoke 210 of above-mentioned magnet 220 attached to inner peripheral surface, the outer peripheral face of above-mentioned magnet 220 and above-mentioned core assembly 100 separates certain intervals (space part) and opposed with above-mentioned core assembly 100, is fixedly connected with the rotating shaft 300 that makes above-mentioned rotor rotation at the central part of above-mentioned rotor yoke 210.
Accommodate the bearing housing 400 of bearing in the central portion of above-mentioned core assembly 100 portion within it of disposing, and use screw 410 etc. that above-mentioned core assembly 100 is fixed on the above-mentioned bearing housing 400, and, fix by screw 430 for above-mentioned core assembly 100 and bearing housing 400 are fixed on the stator lasmination 500.Dispose PCB (tellite) 600 between above-mentioned core assembly 100 and the stator lasmination 500, this PCB 600 is used for transmitting electricity and the control signal that applies from the outside to above-mentioned core assembly 100.
And, dispose bearing 420,440 and rotatably mounted above-mentioned rotating shaft 300 in the top and the bottom of above-mentioned bearing housing inside.
In the brshless DC motor of aforesaid prior art, the supporting structure of bearing housing is after above-mentioned bearing housing 400 is embedded into stator lasmination 500, connect by screw above-mentioned bearing housing 400 is fixed on structure on the said stator lamination 500, existing needs accessory (screw etc.) attachment step, increase manufacturing expense and assembly program, cause increasing the problem of manufacturing expense.
Summary of the invention
The present invention proposes in order to solve above-mentioned the problems of the prior art, its purpose is to provide a kind of bearing housing supporting structure of brshless DC motor, the shape of its change stator lasmination and bearing housing, above-mentioned bearing housing directly is pressed into (filling in by force) to said stator lamination and fixing, reduce parts and assembly program thus, reduce manufacturing expense.
To achieve these goals, the bearing housing supporting structure of brshless DC motor of the present invention will be accommodated in brshless DC motor and be rotated freely that the bearing housing of the bearing of supporting rotating shaft is fixed on the stator lasmination, it is characterized in that, on the said stator lamination, form the inside diameter that is pressed into above-mentioned bearing housing, the outer diameter part of above-mentioned bearing housing is pressed into the inside diameter of said stator lamination, and above-mentioned thus bearing housing is fixedly attached on the said stator lamination.
In addition, the invention is characterized in that the face that is pressed into above-mentioned bearing housing in the inside diameter of said stator lamination is to form by the crooked certain-length of inside diameter with the said stator lamination.
In addition, the invention is characterized in, the outer diameter part of above-mentioned bearing housing has boss, is pressed into certain depth when above at the outer diameter part of above-mentioned bearing housing to the inside diameter of above-mentioned stator lasmination thus, the outer diameter part of above-mentioned bearing housing is stuck on the face of said stator lamination and is not pressed further into.
The bearing housing supporting structure of brshless DC motor of the present invention has changed the shape of stator lasmination and bearing housing, above-mentioned bearing housing directly is pressed into (filling in by force) to said stator lamination and fixing, have the parts of minimizing and assembly program, thereby reduce the effect of manufacturing expense.
Description of drawings
Fig. 1 is the sectional view of the existing brshless DC motor of expression.
Fig. 2 is the sectional view of expression brshless DC motor of the present invention.
Fig. 3 is the detailed structure view of the bearing housing supporting structure of Fig. 2.
Reference numeral:
10: core assembly 11: core
12: coil 20: rotor
21: rotor yoke 22: magnet
30: rotating shaft 40: bearing housing
43: bearing 43: boss
50: stator lasmination 51: bend
60：PCB
Embodiment
Below, the supporting structure of the bearing housing of the brshless DC motor that present invention will be described in detail with reference to the accompanying.
Fig. 2 is the sectional view of expression brshless DC motor of the present invention, and Fig. 3 is the detailed structure view of the bearing housing supporting structure among Fig. 2.
As shown in Figure 2, brshless DC motor of the present invention comprises: stator, and it is made of the core assembly 10 that forms by coiling coil 12 on the core 11 of inside diameter radial, have a certain size in inside; With rotor 20, it is made of toroidal magnet 22 and rotor yoke 21, the outer peripheral face of above-mentioned magnet 22 and above-mentioned core assembly 10 separates certain intervals (space part) and opposed with above-mentioned core assembly 10, above-mentioned rotor yoke 21 with above-mentioned magnet 22 attached to inner peripheral surface, central part in above-mentioned rotor yoke 21 is fixedly connected with the rotating shaft 30 that makes above-mentioned rotor 20 rotations, and possesses the bearing housing cylindraceous 40 that the bearing 43 of above-mentioned rotating shaft 30 is supported in the rotation of accommodating freely.
And above-mentioned bearing housing 40 is fixed on the stator lasmination 50, disposes PCB (tellite) 60 between above-mentioned core assembly 10 and stator lasmination 50, and this PCB 60 is used for transmitting electricity and the control signal that applies from the outside to above-mentioned core assembly 10.
The bearing 43 that is housed in the inside of above-mentioned bearing housing 40 possesses E ring 45, possesses wave washer 46 in the bottom, in order to avoid bearing 43 comes off on top.And, be pressed into the inside diameter of above-mentioned core assembly 10 and the 2nd bearing 44 of the supporting that is fixed, insert packing ring 47 in its underpart, thereby when preventing to rotate with the part of giving prominence at the central portion of above-mentioned rotor yoke 21 between decreased performance due to the friction that produces.
Above-mentioned bearing 43,44 is preferably ball bearing or oilless bearing.
Illustrate that below with reference to Fig. 2 and Fig. 3 bearing housing 40 in the brshless DC motor is fixed on the structure on the stator lasmination 50.
Said stator lamination 50 forms inside diameter on bearing housing 40 bulged-in positions, and above-mentioned inside diameter forms the bend 51 be bent downwardly certain-length, and wherein, this bearing housing 40 is used to accommodate and rotates the bearing 43 of supporting rotating shaft 30 freely.
Above-mentioned bearing housing 40 forms has 2 heavy or 3 bicircular barrel shape boss 48, that have different-diameter, and above-mentioned boss 48 plays at the outer diameter part of above-mentioned bearing housing 40 and is pressed into certain depth when above to the inside diameter of above-mentioned stator lasmination 50, be stuck on the datum level 52 of said stator lamination 50, thus the effect that is not pressed further into.
Bearing housing supporting structure of the present invention is above-mentioned bearing housing 40 to be pressed into (filling in by force) to the inside diameter that is formed at said stator lamination 50, thereby above-mentioned bearing housing 40 is fixedly attached on the said stator lamination 50.
At this moment, bulged-in in the bend that is bent downwardly certain-length 51 in the inside diameter of said stator lamination 50 and the above-mentioned bearing housing 40 closely contacts, thereby above-mentioned bearing housing 40 firmly is fixed on the said stator lamination 50.
And when above-mentioned bearing housing 40 was pressed into the inside diameter of said stator lamination 50, if be pressed into appropriate depth, the boss 48 that then is formed at above-mentioned bearing housing 40 touched the datum level of said stator lamination 50, thereby can't further be pressed into.
As mentioned above, above-mentioned bearing housing directly is pressed into (filling in by force) to said stator lamination and fixing, thereby do not need the draw bails such as screw that are used for above-mentioned bearing housing is fixed on the said stator lamination as prior art, therefore can reduce component count and assembly program, thereby reduce manufacturing expense.
The preferred embodiments of the present invention more than have been described, but those skilled in the art can carry out various modifications and changes to the present invention in the scope that does not break away from the thought of the present invention that is recorded in claims and field.
Claims (3)
1. the bearing housing supporting structure of a brshless DC motor, it will be accommodated in brshless DC motor and rotate freely that the bearing housing of the bearing of supporting rotating shaft is fixed on the stator lasmination,
This bearing housing supporting structure is characterised in that,
Form the inside diameter that is pressed into above-mentioned bearing housing on the said stator lamination, the outer diameter part of above-mentioned bearing housing is pressed into the inside diameter of said stator lamination, and above-mentioned thus bearing housing is fixedly attached on the said stator lamination.
2. the bearing housing supporting structure of brshless DC motor according to claim 1 is characterized in that, the face that is pressed into above-mentioned bearing housing in the inside diameter of said stator lamination is to form by the crooked certain-length of inside diameter with the said stator lamination.
3. the bearing housing supporting structure of brshless DC motor according to claim 1 and 2 is characterized in that,
The outer diameter part of above-mentioned bearing housing has boss, is pressed into certain depth when above at the outer diameter part of above-mentioned bearing housing to the inside diameter of above-mentioned stator lasmination thus, the outer diameter part of above-mentioned bearing housing is stuck on the face of said stator lamination and is not pressed further into.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2009-0018793 | 2009-03-05 | ||
| KR1020090018793A KR101024316B1 (en) | 2009-03-05 | 2009-03-05 | The Structure of Supporting Bearing Housing for a BLDC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101826768A true CN101826768A (en) | 2010-09-08 |
Family
ID=42690532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010121359A Pending CN101826768A (en) | 2009-03-05 | 2010-02-24 | The bearing housing supporting structure of brshless DC motor |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101024316B1 (en) |
| CN (1) | CN101826768A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101380223B1 (en) * | 2011-09-30 | 2014-04-02 | 주식회사 모아텍 | The structure of Installing PCB and Plate for Motor |
| KR101962220B1 (en) * | 2017-09-27 | 2019-03-26 | 우리산업 주식회사 | Dc motor assembly |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3594441B2 (en) * | 1997-02-27 | 2004-12-02 | 東京パーツ工業株式会社 | Hydrodynamic bearing motor |
| JP2000050595A (en) * | 1998-07-31 | 2000-02-18 | Nec Home Electron Ltd | Brushless motor |
| JP3607511B2 (en) | 1998-10-12 | 2005-01-05 | 株式会社三協精機製作所 | Rotor and rotor assembling method and motor using the rotor |
-
2009
- 2009-03-05 KR KR1020090018793A patent/KR101024316B1/en active IP Right Grant
-
2010
- 2010-02-24 CN CN201010121359A patent/CN101826768A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| KR101024316B1 (en) | 2011-03-23 |
| KR20100100101A (en) | 2010-09-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100908 |