WO2012017737A1 - 扁平形振動モータ - Google Patents
扁平形振動モータ Download PDFInfo
- Publication number
- WO2012017737A1 WO2012017737A1 PCT/JP2011/063343 JP2011063343W WO2012017737A1 WO 2012017737 A1 WO2012017737 A1 WO 2012017737A1 JP 2011063343 W JP2011063343 W JP 2011063343W WO 2012017737 A1 WO2012017737 A1 WO 2012017737A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bearing
- side cylindrical
- flat
- cylindrical portion
- cylindrical section
- Prior art date
Links
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Classifications
-
- 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
- H02K7/085—Structural association with bearings radially supporting the rotary shaft at only one end of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2793—Rotors axially facing stators
- H02K1/2795—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets
-
- 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
- H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
- H02K5/1675—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at only one end of the rotor
-
- 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
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
- H02K7/061—Means for converting reciprocating motion into rotary motion or vice versa using rotary unbalanced masses
- H02K7/063—Means for converting reciprocating motion into rotary motion or vice versa using rotary unbalanced masses integrally combined with motor parts, e.g. motors with eccentric rotors
Definitions
- the present invention relates to a flat vibration motor built in a mobile phone or the like, and more particularly to a bearing fixing structure.
- a flat vibration motor for example, a brushless motor
- a stainless steel disk-shaped base plate in which one end of a support shaft is press-fitted into a burring portion, and the other end of the support shaft is a shaft that is closed by the base plate.
- a stainless steel bottomed cylindrical cover case fitted into the mounting hole, a rotor frame having an axial field type rotor magnet and an eccentric weight supported rotatably through a sliding bearing through which the support shaft passes, And a flexible printed wiring board on which a plurality of air-core coils and electronic components such as a current control IC are mounted.
- the rotor frame has a flange protruding inward, and the sliding bearing is fixed to the flange by caulking.
- the sliding bearing that is caulked and fixed to the rotor frame has a caulking annular protrusion on the outer peripheral portion, so that the sliding bearing has a special shape, resulting in an increase in cost.
- the man-hours are increased by the amount of caulking, and this is also a factor of high cost.
- the bearing itself since part of the bearing is deformed in the caulking process, the bearing itself may be deformed or the shape of the shaft insertion hole may be defective, and there may be a problem in mounting accuracy and coaxiality.
- an object of the present invention is to provide a flat structure having a fixing structure in which a normal cylindrical bearing can be used and the bearing can be fixed with sufficient fixing strength without deforming the bearing. It is to provide a shape vibration motor.
- the flat vibration motor according to the present invention includes a stator portion that supports one end of the support shaft, a cover case that supports the other end of the support shaft by opening the opening of the cylindrical portion, and the support shaft penetrates.
- a rotor frame that is rotatably supported via a bearing that has a flat cylindrical shape and is bent from the flat plate portion at the center of the flat plate portion and the flat plate portion.
- An outer peripheral cylindrical portion that extends in the axial direction, and an inner peripheral cylindrical portion that is bent inward from the tip of the outer peripheral cylindrical portion and extends in a direction opposite to the extending direction of the outer peripheral cylindrical portion. It is characterized by being elastically fitted and fixed to the cylindrical part.
- the inner peripheral cylindrical portion of the rotor frame is bent inward from the tip of the outer peripheral cylindrical portion and extends in the direction opposite to the extending direction of the outer peripheral cylindrical portion.
- a reaction force to bend a force directed inward from the end side opposite to the end bent from the outer cylindrical part acts, and when a cylindrical bearing is fixed here, this inner direction
- the bearing is elastically fixed by the force. Compared to conventional press-fitting and fixing, a force in the inner direction from the inner peripheral side cylindrical portion is always applied to the bearing, and the bearing is fixed with sufficient fixing strength.
- the bearing When the bearing comes into contact with the inner peripheral flange, the bearing can be prevented from coming off, and the fixing strength of the bearing can be further increased.
- a flat vibration motor having a fixing structure that can use a normal cylindrical bearing and that can fix the bearing with sufficient fixing strength without deforming the bearing.
- (A) is a longitudinal cross-sectional view of the flat vibration motor which concerns on Example 1 of this invention, (B) is the a section enlarged view of (A).
- (A) is a longitudinal cross-sectional view of the flat vibration motor which concerns on Example 2 of this invention, (B) is the b section enlarged view of (A).
- FIG. 1A is a longitudinal sectional view of a flat vibration motor according to a first embodiment of the present invention
- FIG. 1B is an enlarged view of part a in FIG.
- the flat vibration motor of the present invention is, for example, a brushless motor, and includes a plate 11 that supports one end of a support shaft 1 and a circuit board 12 superimposed on the plate 11, and a plurality of air cores on the circuit board 12.
- the coil 13 and the electronic component 14 are mounted, and these form the stator unit 10.
- cover case 20 that supports the other end of the support shaft 1 and the rotor portion 30 that is rotatably supported through a bearing 31 through which the support shaft 1 passes are provided. Is closed by the stator portion 10.
- the rotor unit 30 includes a bearing 31, a rotor frame 32 in which the bearing 31 is fitted, a rotor magnet 33 fixed to the rotor frame 32, and an eccentric weight 34 that is also fixed to the rotor frame 32 outside the rotor magnet 33. Consists of.
- the rotor frame 32 has a flat cylindrical shape, a flat plate portion 32b in which a central hole 32a is formed, and an outer peripheral side cylindrical portion 32c that is bent from the flat plate portion 32b and extends in the axial direction on the central hole 32a side of the flat plate portion 32b.
- the outer cylindrical portion 32c is bent inward from the end opposite to the end bent from the flat plate portion 32b, and extends in the direction opposite to the extending direction of the outer cylindrical portion 32c. It has a circumferential cylindrical portion 32d.
- Reference numeral 40 denotes a washer that abuts the bearing 31 and supports the rotor portion 30.
- the inner circumferential cylindrical portion 32d is bent inward from the end of the outer circumferential cylindrical portion 32c and extends in the direction opposite to the extending direction of the outer circumferential cylindrical portion 32c.
- the inner peripheral cylindrical portion 32d is mainly subjected to a force directed inward from the end opposite to the end bent from the outer cylindrical portion 32c as a reaction force of bending.
- the bearing 31 When the cylindrical bearing 31 is fixed to the inner peripheral side cylindrical portion 32d (central hole 32a), the bearing 31 is elastically fixed by the force in the inner direction. Compared with conventional press-fitting and fixing, a force inward from the inner peripheral side cylindrical portion 32d is always applied to the bearing 31, and the bearing 31 is fixed with sufficient fixing strength. Therefore, it is possible to use a general cylindrical bearing without using a specially shaped bearing that supports caulking and fixing, and with sufficient fixing strength without deforming the bearing by caulking and fixing. The bearing can be fixed.
- FIG. 2A is a longitudinal sectional view of a flat vibration motor according to a second embodiment of the present invention
- FIG. 2B is an enlarged view of a portion b of FIG. 2 that are the same as those shown in FIG. 1 are given the same reference numerals, and descriptions thereof are omitted.
- a portion different from the flat vibration motor shown in FIG. 1 is in the rotor frame 32, and one end of the inner peripheral side cylindrical portion 32d is an inner peripheral flange portion 32e protruding inward.
- the end surface of the bearing 31 is in contact with the inner peripheral flange 32e.
- the bearing 31 When the bearing 31 comes into contact with the inner circumferential flange 32e, the bearing 31 can be prevented from coming off, and the fixing strength of the bearing 31 can be further increased.
- a structure may be adopted in which the outer cylindrical portion 32c is formed and protrudes inward from the inner peripheral cylindrical portion 32d.
- it is not limited to the structure formed from the end portion opposite to the end portion bent from the outer peripheral side cylindrical portion 32c of the inner peripheral side cylindrical portion 32d, but is formed on the end portion side bent from the outer peripheral side cylindrical portion 32c.
- it may be molded from a portion other than the end portion.
- the outer cylindrical portion 32c extends downward in the figure, but it is also possible to adopt a structure extending upward in the figure.
- the fixed-shaft flat vibration motor having the support shaft 1 fixed thereto has been described.
- a shaft-rotating flat vibration motor can also be adopted, and the gist of the present invention is not changed. Changes to each known structure in the range are also possible. Furthermore, it is applicable not only to a vibration motor but also to a flat motor.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
本例では、内周鍔部32eは内周側円筒部32dから成形されているが、外周側円筒部32cから成形し、内周側円筒部32dよりも内側に突出させる構造を採用しても良い。また、内周側円筒部32dの外周側円筒部32cから屈曲した端部とは反対の端部側から成形される構造に限らず、外周側円筒部32cから屈曲した端部側に成形しても良いし、端部以外の部分から成形しても良い。
さらに、振動モータだけでなく、扁平形モータにも適用可能である。
10…ステータ部
11…プレート
12…回路基板
13…空芯コイル
14…電子部品
20…カバーケース
20a…開口部
30…ロータ部
31…軸受
32…ロータフレーム
32a…中央孔
32b…平板部
32c…外周側円筒部
32d…内周側円筒部
32e…内周鍔部
33…ロータマグネット
34…偏心錘
40…ワッシャ
Claims (2)
- 支軸の一端を支持するステータ部と、筒状部の開口が前記ステータ部で塞がれて前記支軸の他端を支持するカバーケースと、前記支軸が貫通する軸受を介して回転自在に支持されているロータフレームとを備える扁平形モータであって、
前記ロータフレームは、扁平形円筒状で、平板部と、前記平板部の中央で当該平板部から屈曲して軸方向に延びる外周側円筒部と、前記外周側円筒部の先端から内側へ屈曲して当該外周側円筒部の延出方向とは逆方向に延びる内周側円筒部を持ち、前記軸受が前記内周側円筒部に弾性的に嵌め込み固定されていることを特徴とする、扁平形モータ。 - 請求項1に記載の扁平形モータにおいて、前記内周側円筒部又は前記外周側円筒部の一端が内側へ張り出た内周鍔部となっており、前記軸受の端面が前記内周鍔部に当接していることを特徴とする扁平形モータ。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/813,282 US9093870B2 (en) | 2010-08-04 | 2011-06-10 | Flat motor |
JP2012527631A JP5849321B2 (ja) | 2010-08-04 | 2011-06-10 | 扁平形振動モータ |
CN201180037327.0A CN103141013B (zh) | 2010-08-04 | 2011-06-10 | 扁平型马达 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010175071 | 2010-08-04 | ||
JP2010-175071 | 2010-08-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012017737A1 true WO2012017737A1 (ja) | 2012-02-09 |
Family
ID=45559250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/063343 WO2012017737A1 (ja) | 2010-08-04 | 2011-06-10 | 扁平形振動モータ |
Country Status (4)
Country | Link |
---|---|
US (1) | US9093870B2 (ja) |
JP (1) | JP5849321B2 (ja) |
CN (1) | CN103141013B (ja) |
WO (1) | WO2012017737A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016100945A (ja) * | 2014-11-19 | 2016-05-30 | 日本電産セイミツ株式会社 | 振動モータ |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017074572A (ja) * | 2015-10-16 | 2017-04-20 | 日本電産セイミツ株式会社 | 振動モータ |
US10396645B2 (en) * | 2015-10-16 | 2019-08-27 | Nidec Seimitsu Corporation | Vibration motor |
JP6531260B2 (ja) * | 2015-10-16 | 2019-06-19 | 日本電産セイミツ株式会社 | 振動モータ |
JP6531261B2 (ja) * | 2015-10-16 | 2019-06-19 | 日本電産セイミツ株式会社 | 振動モータ |
CN111525768B (zh) * | 2019-02-01 | 2023-02-28 | 香港中文大学 | 人体动能收集装置及其转换方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005027484A (ja) * | 2003-07-04 | 2005-01-27 | Tokyo Parts Ind Co Ltd | ステータと同ステータを備えた軸方向空隙型ブラシレスモータ |
JP2006094644A (ja) * | 2004-09-24 | 2006-04-06 | Nidec Copal Corp | ブラシレスモータ |
JP2007104740A (ja) * | 2005-09-30 | 2007-04-19 | Nidec Copal Corp | ブラシレスモータ |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6998742B2 (en) | 2002-10-28 | 2006-02-14 | Tokyo Parts Industrial Co., Ltd. | Axial-air-gap brushless vibration motor containing drive circuit |
KR100541103B1 (ko) | 2004-01-06 | 2006-01-11 | 삼성전기주식회사 | 바-타입 진동모터 |
JP2009303444A (ja) * | 2008-06-17 | 2009-12-24 | Sanyo Electric Co Ltd | 扁平形モータ |
JP2011067082A (ja) * | 2009-08-19 | 2011-03-31 | Sanyo Electric Co Ltd | 扁平形振動モータ |
-
2011
- 2011-06-10 CN CN201180037327.0A patent/CN103141013B/zh not_active Expired - Fee Related
- 2011-06-10 US US13/813,282 patent/US9093870B2/en not_active Expired - Fee Related
- 2011-06-10 JP JP2012527631A patent/JP5849321B2/ja not_active Expired - Fee Related
- 2011-06-10 WO PCT/JP2011/063343 patent/WO2012017737A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005027484A (ja) * | 2003-07-04 | 2005-01-27 | Tokyo Parts Ind Co Ltd | ステータと同ステータを備えた軸方向空隙型ブラシレスモータ |
JP2006094644A (ja) * | 2004-09-24 | 2006-04-06 | Nidec Copal Corp | ブラシレスモータ |
JP2007104740A (ja) * | 2005-09-30 | 2007-04-19 | Nidec Copal Corp | ブラシレスモータ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016100945A (ja) * | 2014-11-19 | 2016-05-30 | 日本電産セイミツ株式会社 | 振動モータ |
Also Published As
Publication number | Publication date |
---|---|
US20130127277A1 (en) | 2013-05-23 |
JP5849321B2 (ja) | 2016-01-27 |
US9093870B2 (en) | 2015-07-28 |
CN103141013A (zh) | 2013-06-05 |
CN103141013B (zh) | 2015-09-09 |
JPWO2012017737A1 (ja) | 2013-10-03 |
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