KR200156948Y1 - Spindle motor - Google Patents
Spindle motor Download PDFInfo
- Publication number
- KR200156948Y1 KR200156948Y1 KR2019920026767U KR920026767U KR200156948Y1 KR 200156948 Y1 KR200156948 Y1 KR 200156948Y1 KR 2019920026767 U KR2019920026767 U KR 2019920026767U KR 920026767 U KR920026767 U KR 920026767U KR 200156948 Y1 KR200156948 Y1 KR 200156948Y1
- Authority
- KR
- South Korea
- Prior art keywords
- hub
- spindle motor
- bearing
- shaft
- ring
- 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 - Lifetime
Links
- 238000003825 pressing Methods 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract 1
- 230000036316 preload Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/02—Sliding-contact bearings
- F16C25/04—Sliding-contact bearings self-adjusting
- F16C25/045—Sliding-contact bearings self-adjusting with magnetic means to preload the bearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/08—Rigid support of bearing units; Housings, e.g. caps, covers for spindles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Frames (AREA)
Abstract
이 고안은 하드디스크 드라이브(Hard disk drive)용 스핀들 모터에 관한 것으로서, 상기 스핀들 모터를 구성하는 허브와 방진커버판을 일체로 성형하고, 상기 허브의 밑면에 링형태의 돌출부를 형성함으로써, 허브의 고속회전시 베어링에서 발생되는 불순물, 먼지등의 이물질이 외부로 유출되는 것을 차단시킬 수 있고, 상기 스핀들 모터의 제조후에 베어링 예압을 인가할 수 있으므로 예압공정 및 조립공정을 단순화할 수 있음과 동시에 제품의 신뢰성을 향상시킬 수 있는 것이다.The present invention relates to a spindle motor for a hard disk drive, wherein the hub and the dust cover plate constituting the spindle motor are integrally formed, and a ring-shaped protrusion is formed on the bottom of the hub to form a hub. It can block foreign substances such as impurities, dust, etc. generated from the bearings during high speed rotation to the outside, and preloading can be applied after manufacturing the spindle motor, which simplifies the preloading process and assembly process. To improve the reliability.
Description
본 고안은 스핀들 모터에 관한 것으로서, 더욱 상세하게는 샤프트에 베어링 지지되는 허브의 내경 상단부를 완전 밀폐되도록 하면서 상단의 밀폐단 단부의 저면으로는 링형상으로 가압돌기가 일체로 형성되게 하므로서 베어링 외부로의 이물질 유출이 차단되도록 하는 동시에 허브의 조립에 의해서 간단하게 베어링의 내륜에 예압이 인가되도록 하는 스핀들 모터에 관한 것이다.The present invention relates to a spindle motor, and more specifically, to the outer surface of the bearing by forming a pressurized protrusion integrally formed in a ring shape on the bottom surface of the closed end of the upper end of the hub that is completely sealed to the shaft supported by the shaft. The present invention relates to a spindle motor that allows the outflow of foreign substances to be blocked, and at the same time, preload is simply applied to the inner ring of the bearing by assembling the hub.
일반적으로 하드 디스크 드라이브(Hard Disk Drive)는 컴퓨터의 본체에 내장되어 입,출력되는 데이터를 디스크에 기록 및 재생하는 동작을 수행하게 되며, 이러한 하드 디스크 드라이브의 구동을 위해 구비시키게 되는 것이 스핀들 모터이다.In general, a hard disk drive (hard disk drive) is built in the main body of the computer to perform the operation of recording and reproducing the input and output data to the disk, the spindle motor is provided to drive such a hard disk drive .
제1도는 종래의 스핀들 모터 구조를 도시한 것으로서, 하우징(15)의 내경부에는 샤프트(17)가 고정되게 끼워지고, 내경부의 외주면에는 구동용 코일(13)이 권선된 스테이터 코어(4)가 결합되어 있다.1 illustrates a conventional spindle motor structure, in which a shaft 17 is fixedly fitted to an inner diameter portion of a housing 15 and a stator core 4 wound around a driving coil 13 on an outer circumferential surface of the inner diameter portion. Is combined.
그리고 샤프트(17)의 상부에는 베어링(16)에 의해 허브(11)가 축지지되도록 하며, 허브(11)의 상단부에는 금속재질인 별도의 방진커버판(18)이 접착제(19)에 의해서 부착되도록 하고 있다.In addition, the hub 11 is axially supported by the bearing 16 on the upper part of the shaft 17, and a separate dustproof cover plate 18, which is made of metal, is attached to the upper end of the hub 11 by the adhesive 19. I am trying to.
한편 샤프트(17)에 허브(11)를 베어링(16)을 개입시켜 조립시키게 될 때 베어링에서의 진동과 소음발생의 방지 목적으로 베어링에 예압을 인가시키게 되며, 이러한 베어링 예압은 통상 제2도에서와 같은 가압지그(20)를 이용하여 가압지그(20)의 저부로 돌출시킨 가압돌부(20a)가 베어링(16)의 내륜을 가압하는 동작에 의해서 수행되도록 하고 있다.On the other hand, when the hub 11 is assembled to the shaft 17 through the bearing 16, the preload is applied to the bearing for the purpose of preventing vibration and noise from the bearing. The pressing protrusion 20a protruding to the bottom of the pressing jig 20 using the pressing jig 20 as described above is performed by pressing the inner ring of the bearing 16.
이와같이 구성되는 스핀들 모터는 전원이 외부로부터 인가되면서 구동용 코일(13)에 전류가 유도되면 허브(11)에서 구동용 코일(13)과 대향되게 부착시킨 메인 마그네트(12)와의 상로작용에 의해서 전자기력을 발생시키게 되고, 이로서 허브(11)를 회전시키게 되는 것이다.When the electric current is induced in the driving coil 13 while the power source is applied from the outside, the spindle motor configured as described above has an electromagnetic force by a vertical action with the main magnet 12 attached to the driving coil 13 in the hub 11 so as to face the driving coil 13. It will generate, thereby rotating the hub (11).
허브(11)가 회전하기 시작하면 허브(11)에 안착되는 디스크(도시생략)가 동시에 회전하면서 헤드에 의해 디스크에 정보를 기록하거나 기록된 정보를 재생하게 되는 것이다.When the hub 11 starts to rotate, the disk (not shown) seated on the hub 11 rotates at the same time to record information on the disk or reproduce the recorded information by the head.
하지만 종전의 스핀들 모터는 방진커버판(18)을 별도의 금형에 의해 제작해야만 하는 제작공정 및 이를 허브(11)에 부착시키기 위해서는 접착제(19)등을 이용하는 조립공정이 반드시 요구되고, 특히 베어링 예압을 위해서는 별도의 가압지그(20)가 구비되어야만 하므로 제품의 생산성과 원가면에서 대단히 불리한 문제점이 있다.However, the conventional spindle motor requires a fabrication process in which the dustproof cover plate 18 must be manufactured by a separate mold, and an assembly process using an adhesive 19 or the like in order to attach the dust cover plate 18 to the hub 11. In order to be provided with a separate pressing jig 20 there is a very disadvantageous problem in terms of productivity and cost of the product.
이에 본 고안은 상기한 문제점을 해결하기 위하여 안출한 것으로서, 본 고안은 허브의 베어링 상부측을 완전 밀폐되는 구성으로 되게 하여 방진커버판의 별도 제작 및 조립 공정이 생략될 수 있도록 하는데 주된 목적이 있다.The present invention has been made in order to solve the above problems, the present invention has a main purpose to make the bearing upper side of the hub in a completely sealed configuration so that the separate manufacturing and assembly process of the dustproof cover plate can be omitted. .
또한 본 고안은 방진차단부의 저부로 베어링의 내륜을 가압할 수 있도록 하는 가압돌기가 돌출성형되도록 하므로서 허브의 조립에 의해 간단히 베어링 예압이 인가되도록 하는데 다른 목적이 있다.In addition, the present invention has another object to simply apply the preload of the bearing by the assembly of the hub to be formed so that the pressing projection for pressing the inner ring of the bearing to the bottom of the anti-vibration blocking.
제1도는 종래 스핀들 모터의 단면도.1 is a cross-sectional view of a conventional spindle motor.
제2도는 종래 베어링 내륜에 예압을 인가하는 상태를 도시한 개략 단면도.2 is a schematic cross-sectional view showing a state in which a preload is applied to a conventional bearing inner ring.
제3도는 본 고안에 따른 스핀들 모터의 단면도.3 is a cross-sectional view of the spindle motor according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 스핀들 모터 11 : 허브10: spindle motor 11: hub
11a : 방진차단부 11b : 가압돌부11a: dustproof blocking part 11b: pressing protrusion
13 : 구동용 코일 14 : 스테이터 코어13 driving coil 14 stator core
15 : 하우징 16 : 베어링15 housing 16 bearing
16a : 베어링 내륜 17 : 샤프트16a: bearing inner ring 17: shaft
18 : 방진커버판 19 : 접착제18: dust cover 19: adhesive
상기한 목적을 달성시키기 위하여 본 고안은 하우징 내경부에는 샤프트가 축지지되고, 내경부의 외주면에는 구동용 코일이 권선되어 있는 스테이터 코어가 결합되며, 샤프트의 상부에는 베어링에 의해서 허브가 결합되는 스핀들 모터에 있어서, 상기 허브의 샤프트가 삽입되어 있는 중앙의 상단부는 밀폐되게 하여 방진차단부를 이루고, 상기 방진차단부의 저부로는 베어링의 내륜에 근접하는 링형상의 가압돌부가 돌출되도록 하는 구성이 특징이다.In order to achieve the above object, the present invention has a shaft supported by a shaft on an inner diameter of a housing, a stator core having a driving coil wound on an outer circumferential surface of the inner diameter, and a hub coupled to a hub by a bearing on an upper portion of the shaft. In the motor, the upper end portion of the center in which the shaft of the hub is inserted is sealed to form a dustproof cutout portion, and the bottom portion of the dustproof cutoff portion is characterized in that a ring-shaped pressing protrusion protruding to the inner ring of the bearing protrudes. .
이하 본 고안의 바람직한 실시예를 첨부한 도면에 따라 상세히 설명하면 다음과 같다.Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.
제3도는 본 고안에 따른 스핀들 모터를 도시한 것으로서, 하우징(15)의 내경부에는 샤프트(17)가 축지지되고, 내경부의 외주면에는 구동용 코일(13)이 권선되어 있는 스테이터 코어(14)가 결합되며, 샤프트(17)의 상부에는 베어링(16)에 의해서 결합되는 허브(11)가 조립되는 구성은 종전과 동일하다.3 is a diagram illustrating a spindle motor according to the present invention, wherein a shaft 17 is axially supported on an inner diameter portion of a housing 15, and a stator core 14 is wound around a driving coil 13 on an outer circumferential surface of the inner diameter portion. ) Is coupled, the configuration of the hub 11 is assembled to the upper portion of the shaft 17 by the bearing 16 is the same as before.
그리고 허브(11)에는 스테이터 코어(14)와 대응되는 위치에 구동 마그네트(12)가 부착되도록 한다.In addition, the driving magnet 12 is attached to the hub 11 at a position corresponding to the stator core 14.
이와같은 구성에서 본 고안은 샤프트(17)가 삽입되어 베어링(16)에 의해 연결되는 허브(11)의 내경면의 상단부를 밀폐시킨 구조로 형성하여 방진차단부(11a)를 이루도록 하며, 방진차단부(11a)의 저면으로부터는 그 저부의 베어링 내륜에 근접되게 링형상의 가압돌부(11b)가 돌출되도록 한 것이 특징이다.In this configuration, the present invention forms a structure in which an upper end portion of the inner diameter surface of the hub 11 connected by the bearing 16 is inserted into the shaft 17 to form a dustproof blocking portion 11a, and thus dustproof blocking From the bottom of the part 11a, the ring-shaped pressing protrusion 11b protrudes from the bottom of the bearing inner ring.
즉 샤프트(17)의 상부측 허브(11)의 중앙 상부를 완전 밀폐되도록 하고, 이 밀폐된 부위에서 하향 돌출되게 가압돌부(11b)가 형성되도록 하는 것이다.That is, the central upper portion of the hub 11 of the upper side of the shaft 17 is completely sealed, and the pressing protrusion 11b is formed to protrude downward from the sealed portion.
도면 중 미설명부호 21은 베어링간을 일정 간격으로 유지되도록 하는 스페이서이다.In the drawings, reference numeral 21 is a spacer for maintaining the bearings at regular intervals.
이상과 같은 구성에 따라 방진차단 구조를 일체로 형성하는 허브(11)에 의해 별도의 방진차단판을 제작 및 조립시킬 필요가 없게 되며, 방진차단부(11a)의 저부로 돌출시키게 되는 가압돌부(11b)에 의해서는 허브의 조립시 베어링(16)의 내륜(16a)을 일정 하중으로 가압하게 되므로서 베어링(16)에 예압을 균일하게 가할 수가 있게 된다.According to the above configuration, it is not necessary to fabricate and assemble a separate anti-vibration blocking plate by the hub 11 integrally forming the anti-vibration blocking structure, and pressurized protrusions protruding to the bottom of the anti-vibration blocking portion 11a ( 11b) pressurizes the inner ring 16a of the bearing 16 with a certain load during assembling the hub, thereby allowing the preload to be uniformly applied to the bearing 16.
따라서 조립된 스핀들 모터가 고속으로 구동시 베어링(16)에서 발생되는 각종 이물질들이 방진차단부(11a)에 막혀져 허브(11)의 외부로 유출되지 않게 되는 동시에 베어링(16)에서의 진동과 소음을 방지시키므로서 안정된 구동성을 유지시킬 수가 있게 된다.Therefore, when the assembled spindle motor is driven at a high speed, various foreign substances generated in the bearing 16 are blocked by the anti-vibration blocking part 11a so as not to flow out of the hub 11 and at the same time, vibration and noise in the bearing 16 are prevented. It is possible to maintain a stable driveability by preventing the.
그러므로 본 고안은 스핀들 모터의 구성 부품을 제작시 별도의 방진커버판을 생략할 수가 있게 되어 제작공정 및 이를 조립하는 조립공정이 생략되면서 모터 제작의 생산성을 증대시키게 되는 동시에 베어링의 안정된 구동으로 모터의 성능을 향상시키게 되며, 특히 허브로부터 내부의 이물질 유출을 방지시켜 모터의 청정도를 개선시키게 되는 매우 유용한 효과를 제공하게 되는 것이다.Therefore, the present invention can omit a separate dustproof cover plate when manufacturing the component parts of the spindle motor, thereby eliminating the manufacturing process and the assembling process of assembling the same, thereby increasing the productivity of the motor manufacturing and at the same time driving the motor stably. This improves the performance, and in particular, it provides a very useful effect of improving the cleanliness of the motor by preventing foreign matter from leaking from the hub.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019920026767U KR200156948Y1 (en) | 1992-12-28 | 1992-12-28 | Spindle motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019920026767U KR200156948Y1 (en) | 1992-12-28 | 1992-12-28 | Spindle motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR940018048U KR940018048U (en) | 1994-07-30 |
| KR200156948Y1 true KR200156948Y1 (en) | 1999-09-15 |
Family
ID=19347898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019920026767U Expired - Lifetime KR200156948Y1 (en) | 1992-12-28 | 1992-12-28 | Spindle motor |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR200156948Y1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100837353B1 (en) | 2006-11-15 | 2008-06-12 | 엘지전자 주식회사 | Hermetic Abduction Motor |
-
1992
- 1992-12-28 KR KR2019920026767U patent/KR200156948Y1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100837353B1 (en) | 2006-11-15 | 2008-06-12 | 엘지전자 주식회사 | Hermetic Abduction Motor |
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| Publication number | Publication date |
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| KR940018048U (en) | 1994-07-30 |
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