CN109038939B - Permanent magnet alternating current flat vibration motor and use method - Google Patents
Permanent magnet alternating current flat vibration motor and use method Download PDFInfo
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- CN109038939B CN109038939B CN201810769877.5A CN201810769877A CN109038939B CN 109038939 B CN109038939 B CN 109038939B CN 201810769877 A CN201810769877 A CN 201810769877A CN 109038939 B CN109038939 B CN 109038939B
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 49
- 239000010959 steel Substances 0.000 claims abstract description 49
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229920000297 Rayon Polymers 0.000 description 4
- 230000003993 interaction Effects 0.000 description 3
- 229910001080 W alloy Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
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Classifications
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- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
-
- 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
Abstract
The invention discloses a using method of a permanent magnet alternating current flat vibration motor, which comprises a cylindrical shell with an opening at the lower end, a rotor and a stator, wherein the rotor and the stator are arranged in the shell; the stator comprises a base arranged at the lower part of the shell, 2 coils arranged on the base, a rotating shaft arranged on the base and connected with the base, and a plurality of FPC (flexible printed circuit) cables arranged on the base; the rotor comprises a bracket arranged on the rotating shaft, magnetic steel arranged on the bracket and connected with the bracket, an eccentric hammer arranged on one side of the bracket and connected with the bracket, and an oil-containing bearing arranged on the rotating shaft; the 2 coils are respectively and electrically connected with the corresponding FPC flat cables. The invention has the characteristics of effectively prolonging the service life of the motor, reducing noise and lowering production cost.
Description
Technical Field
The invention relates to the technical field of miniature vibration motors, in particular to a permanent magnet alternating current flat vibration motor capable of effectively prolonging the service life of the motor, reducing noise and reducing production cost and a using method thereof.
Background
The mobile phone is called as an indispensable necessity for the life of people, and along with the more powerful function of the mobile phone, the life of people is less and less; meanwhile, the quality of the mobile phone is better and better, and the frequency of replacing the mobile phone by people is obviously reduced due to the quality problem of the mobile phone, so that the mobile phone is replaced once in several years from the previous replacement of one mobile phone in one year; therefore, the requirements for the life and quality of each component in the mobile phone are higher and higher.
At present, the vibration motors mainly used in the mobile phone are a permanent magnet direct current flat vibration motor and a brushless motor. The permanent magnet direct current flat vibration motor is a rotary motor with a brush, has the defects of high noise and short service life during working, and is no longer used in high-end mobile phones due to the problems. The brushless motor has a control IC which is expensive, and thus cannot be widely used.
Disclosure of Invention
The invention aims to overcome the defects of higher noise, shorter service life and higher cost of a brushless motor of a permanent magnet direct current flat vibration motor in the prior art, and provides a permanent magnet alternating current flat vibration motor and a use method thereof, wherein the permanent magnet alternating current flat vibration motor can effectively prolong the service life of the motor, reduce the noise and reduce the production cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for using a permanent magnet alternating current flat vibration motor comprises a cylindrical shell with an opening at the lower end, a rotor and a stator which are arranged in the shell; the stator comprises a base arranged at the lower part of the shell, 2 coils arranged on the base, a rotating shaft arranged on the base and connected with the base, and a plurality of FPC (flexible printed circuit) cables arranged on the base; the rotor comprises a bracket arranged on the rotating shaft, magnetic steel arranged on the bracket and connected with the bracket, an eccentric hammer arranged on one side of the bracket and connected with the bracket, and an oil-containing bearing arranged on the rotating shaft; the 2 coils are respectively and electrically connected with corresponding FPC flat cables; the method comprises the following steps:
(1-1) magnetizing the magnetic steel by an operator;
(1-2) respectively inputting alternating currents into 2 coils, wherein the 2 coils generate alternating magnetic fields;
(1-3) the magnetic field generated by the 2 coils interacts with the magnetic field of the magnetic steel, the magnetic steel rotates, and the magnetic steel rotates to drive the rotor to rotate;
(1-4) changing the direction of the alternating current, wherein 2 coils generate magnetic fields with opposite directions, the magnetic fields generated by the 2 coils drive the magnetic steel to move in opposite directions, the current is changed continuously, and the rotor is driven to move back and forth continuously;
(1-5) the rotor continuously moves back and forth to drive the eccentric hammer to move along with the rotor, and the eccentric hammer generates vibration.
The invention relates to a permanent magnet alternating current flat vibration motor, which is designed and optimized on the basis of a common flat motor, eliminates parts such as a commutator, an electric brush and the like which have higher cost and are difficult to manufacture, fully utilizes the interaction of an alternating magnetic field generated by a coil and a magnetic field of magnetic steel to achieve the aim of vibration, has simple structure, is easy to operate and use, has lower noise and longer service life because of being brushless, does not need chip control, saves economic cost and has the characteristic of universality.
Preferably, the step (1-1) further comprises the steps of:
(2-1) dividing the magnetic steel into four parts, namely, upper left part, lower left part, upper right part and lower right part by an operator;
(2-2) the upper left part is magnetized into N levels, the lower left part is magnetized into S levels, the upper right part is magnetized into S levels, and the lower right part is magnetized into N levels.
Preferably, the magnetic steel is in a circular ring shape, and the rotating shaft penetrates through the magnetic steel and extends out of the magnetic steel. The magnetic steel is fixedly connected with the bracket viscose. When the coil generates an alternating magnetic field, the alternating magnetic field interacts with the magnetic field of the magnetic steel, and the magnetic steel can move back and forth under the rotating action of the bearing.
Preferably, the eccentric weight is in a semicircular ring shape, is positioned between the bracket and the magnetic steel and has an inverted L-shaped cross section. The eccentric hammer is made of tungsten alloy, and the eccentric hammer vibrates when the rotor moves back and forth due to the interaction of the alternating magnetic field and the magnetic field of the magnetic steel. The eccentric hammer is fixedly connected with the bracket through viscose.
Preferably, the 2 coils are respectively positioned at the left side and the right side of the rotating shaft; the oil-retaining bearing is positioned between the bracket and the rotating shaft. The oil-retaining bearing is used for supporting a rotating body consisting of the bracket, the magnetic steel and the eccentric hammer, so that the friction coefficient in the motion process is reduced, and the rotation precision is ensured. Alternating current is input into the 2 coils through the two golden fingers of the FPC, and the coils generate an alternating magnetic field. The FPC is a flexible printed circuit board which is made of polyimide or polyester film as a base material and has high reliability and flexibility. The high-density light-weight LED lamp has the characteristics of high wiring density, light weight, thin thickness and good bending property.
Preferably, the upper end of the rotating shaft is in contact with the shell, and the lower end of the rotating shaft is in interference fit connection with the base. The lower extreme and the base interference fit of pivot are connected in order to guarantee working strength, increase of service life.
Preferably, the oil-retaining bearing is connected with the bracket in an interference fit manner. The oil-retaining bearing is connected with the bracket in an interference fit manner to increase the strength, so that looseness or falling off caused by the action of centrifugal force in the rotating process can be avoided, the service life of the motor can be prolonged, and faults can be avoided.
Preferably, the lower part of the shaft is provided with a first gasket, and the first gasket is positioned at the lower part of the oil-containing bearing and is in contact with the oil-containing bearing; the upper part of the rotating shaft is provided with a second gasket, the second gasket is in a ring shape and is positioned between the shell and the support. The first gasket is used for reducing vibration friction between the rotor and the stator, and the second gasket is used for reducing friction vibration between the rotor and the shell, so that the shell is prevented from vibrating along with the vibration of the rotor, and noise is reduced.
Therefore, the invention has the following beneficial effects: the lower end of the rotating shaft is connected with the base in an interference fit manner, and the oil-containing bearing is connected with the bracket in an interference fit manner, so that the service life of the motor is prolonged, and faults caused by looseness or falling off in the movement process are avoided; the magnetic steel is magnetized according to the method provided by the invention, and interacts with the alternating magnetic field generated by the coil, so that parts such as a commutator, an electric brush and the like which have higher cost and are difficult to manufacture are eliminated, the interaction between the alternating magnetic field generated by the coil and the magnetic field of the magnetic steel is fully utilized, and the eccentric hammer generates vibration in the motion process of the rotor, so that the purpose of a vibration motor is achieved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of one construction of the stator of the present invention;
fig. 3 is a schematic view of a structure of the rotor of the present invention.
In the figure: the device comprises a shell 1, a base 2, a coil 3, a rotating shaft 4, an FPC (flexible printed circuit) flat cable 5, a support 6, magnetic steel 7, an eccentric hammer 8, an oil-retaining bearing 9, a first gasket 10 and a second gasket 11.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
The embodiment shown in fig. 1 is a method for using a permanent magnet alternating current flat vibration motor, which comprises a cylindrical shell 1 with an opening at the lower end, a rotor and a stator arranged in the shell; the stator shown in fig. 2 comprises a base 2 arranged at the lower part of the shell, 2 coils 3 arranged on the base, a rotating shaft 4 arranged on the base and connected with the base, and a plurality of FPC (flexible printed circuit) cables 5 arranged on the base; the rotor shown in fig. 3 comprises a bracket 6 arranged on the rotating shaft, a magnetic steel 7 arranged on the bracket and connected with the bracket, an eccentric hammer 8 arranged on one side of the bracket and connected with the bracket, and an oil-containing bearing 9 arranged on the rotating shaft; the 2 coils are respectively and electrically connected with corresponding FPC flat cables; the method comprises the following steps:
step 100, magnetizing the magnetic steel by an operator;
step 110, an operator divides the magnetic steel into four parts, namely upper left, lower left, upper right and lower right;
and 120, magnetizing the left upper part of the magnetic steel into N levels, magnetizing the left lower part of the magnetic steel into S levels, magnetizing the right upper part of the magnetic steel into S levels, and magnetizing the right lower part of the magnetic steel into N levels by an operator.
Step 200, respectively inputting alternating current into 2 coils, wherein the 2 coils generate alternating magnetic fields;
step 300, magnetic fields generated by the 2 coils interact with magnetic fields of the magnetic steel, the magnetic steel rotates, and the magnetic steel rotates to drive the rotor to rotate;
step 400, changing the direction of alternating current, wherein 2 coils generate magnetic fields with opposite directions, the magnetic fields generated by the 2 coils drive the magnetic steel to move in opposite directions, the current is changed continuously, and the rotor is driven to move back and forth continuously;
step 500, the rotor continuously moves back and forth to drive the eccentric hammer to move along with the rotor, and the eccentric hammer generates vibration.
As shown in fig. 1 and 3, the magnetic steel is annular, and the rotating shaft penetrates through the magnetic steel and extends out of the magnetic steel. The eccentric hammer is in a semicircular ring shape and is positioned between the bracket and the magnetic steel, and the cross section of the eccentric hammer is in an inverted L shape. The eccentric weight is made of tungsten alloy and is fixed on the bracket by using viscose glue. The magnetic steel and the bracket are fixed by viscose. The oil-retaining bearing is positioned between the support and the rotating shaft and is connected with the support in an interference fit manner. The lower part of the rotating shaft is provided with a first gasket 10 which is positioned at the lower part of the oil-retaining bearing and is contacted with the oil-retaining bearing; the upper part of the rotating shaft is provided with a second gasket 11 which is in a ring shape and is positioned between the shell and the bracket.
As shown in fig. 2, 2 coils are respectively positioned at the left and right sides of the rotating shaft; the upper end of the rotating shaft is contacted with the shell, and the lower end of the rotating shaft is connected with the base in an interference fit manner. Each coil is fixed on the FPC flat cable by using an adhesive, and each FPC flat cable is fixed on the base by using the adhesive.
It should be understood that this example is for illustrative purposes only and is not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Claims (8)
1. The use method of the permanent magnet alternating current flat vibration motor is characterized by comprising a cylindrical shell (1) with an opening at the lower end, a rotor and a stator which are arranged in the shell; the stator comprises a base (2) arranged at the lower part of the shell, 2 coils (3) arranged on the base and connected with the base, a rotating shaft (4) arranged on the base and connected with the base, and a plurality of FPC (flexible printed circuit) cables (5) arranged on the base; the rotor comprises a bracket (6) arranged on the rotating shaft and connected with the rotating shaft, a magnetic steel (7) arranged on the bracket and connected with the bracket, an eccentric hammer (8) arranged on one side of the bracket and connected with the bracket, and an oil-containing bearing (9) arranged on the rotating shaft; the eccentric hammer is in a semicircular ring shape and is positioned between the bracket and the magnetic steel, the cross section of the eccentric hammer is in an inverted L shape, and the 2 coils are respectively and electrically connected with corresponding FPC (flexible printed circuit) cables; the method comprises the following steps:
(1-1) magnetizing the magnetic steel by an operator;
(1-2) respectively inputting alternating currents into 2 coils, wherein the 2 coils generate alternating magnetic fields;
(1-3) the magnetic field generated by the 2 coils interacts with the magnetic field of the magnetic steel, the magnetic steel rotates, and the magnetic steel rotates to drive the rotor to rotate;
(1-4) changing the direction of the alternating current, wherein 2 coils generate magnetic fields with opposite directions, the magnetic fields generated by the 2 coils drive the magnetic steel to move in opposite directions, the current is changed continuously, and the rotor is driven to move back and forth continuously;
(1-5) the rotor continuously moves back and forth to drive the eccentric weight to move along with the rotor, and the eccentric weight generates vibration.
2. The use method of a permanent magnet ac flat vibration motor according to claim 1, wherein the step (1-1) further comprises the steps of:
(2-1) dividing the magnetic steel into four parts, namely, upper left part, lower left part, upper right part and lower right part by an operator;
(2-2) the operator magnetizes the upper left portion as N-level, the operator magnetizes the lower left portion as S-level, the operator magnetizes the upper right portion as S-level, and the operator magnetizes the lower right portion as N-level.
3. The method as claimed in claim 1, wherein the magnetic steel is annular, and the shaft passes through the magnetic steel and extends out of the magnetic steel.
4. The method of claim 1, wherein the eccentric weight is a semi-circular shape, the eccentric weight is located between the bracket and the magnetic steel, and the cross section of the eccentric weight is in an inverted L shape.
5. The use method of the permanent magnet ac flat vibration motor according to claim 1, wherein 2 coils are respectively located at the left and right sides of the rotation shaft; the oil-retaining bearing is positioned between the bracket and the rotating shaft.
6. The method as claimed in claim 1, wherein the upper end of the shaft contacts the housing and the lower end of the shaft is connected to the base in an interference fit.
7. The use method of the permanent magnet AC flat vibration motor as claimed in claim 5, wherein the oil-containing bearing is connected with the bracket in an interference fit manner.
8. The use method of a permanent magnet flat vibration motor according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7, wherein the lower part of the rotating shaft is provided with a first gasket (10), and the first gasket is positioned at the lower part of the oil-containing bearing and is contacted with the oil-containing bearing; the upper part of the rotating shaft is provided with a second gasket (11) which is in a ring shape and is positioned between the shell and the bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810769877.5A CN109038939B (en) | 2018-07-13 | 2018-07-13 | Permanent magnet alternating current flat vibration motor and use method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810769877.5A CN109038939B (en) | 2018-07-13 | 2018-07-13 | Permanent magnet alternating current flat vibration motor and use method |
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| Publication Number | Publication Date |
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| CN109038939A CN109038939A (en) | 2018-12-18 |
| CN109038939B true CN109038939B (en) | 2021-04-20 |
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| CN201810769877.5A Active CN109038939B (en) | 2018-07-13 | 2018-07-13 | Permanent magnet alternating current flat vibration motor and use method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111463983A (en) * | 2020-05-21 | 2020-07-28 | 浙江省东阳市东磁诚基电子有限公司 | Novel single-coil brushless motor and implementation method thereof |
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| CN2624512Y (en) * | 2003-04-17 | 2004-07-07 | 力致科技股份有限公司 | Reciprocation and rotation reverse gear |
| CN101764458A (en) * | 2008-12-25 | 2010-06-30 | 思考株式会社 | Eccentric rotor and small-sized brushless vibration motor with the rotor |
| CN105610272A (en) * | 2014-11-19 | 2016-05-25 | 日本电产精密株式会社 | Vibration motor |
| CN106803699A (en) * | 2016-07-19 | 2017-06-06 | 李相宜 | Brushless DC vibrating motor |
| CN206517275U (en) * | 2015-12-25 | 2017-09-22 | 日本电产精密株式会社 | Vibrating motor, band vibration section substrate and noiseless device for informing |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2997632B2 (en) * | 1995-04-27 | 2000-01-11 | 核燃料サイクル開発機構 | Electromagnetic rotary vibration device for rotary body and vibration control device for rotary body using the same |
| JP3579571B2 (en) * | 1997-06-16 | 2004-10-20 | 東京パーツ工業株式会社 | Axial air fan motor |
| JP3785347B2 (en) * | 2001-10-30 | 2006-06-14 | トヨタ自動車株式会社 | Torsional vibration device |
| WO2009120046A2 (en) * | 2008-03-28 | 2009-10-01 | 백명호 | Direct current brushless vibration motor |
| CN103427583A (en) * | 2013-08-09 | 2013-12-04 | 重庆市灵龙电子有限公司 | Flat interference-proof vibration motor |
| KR101629167B1 (en) * | 2014-09-11 | 2016-06-13 | 주식회사 엠플러스 | Vibrator |
| JP2017153314A (en) * | 2016-02-26 | 2017-08-31 | 日本電産セイミツ株式会社 | Vibration motor |
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2018
- 2018-07-13 CN CN201810769877.5A patent/CN109038939B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2624512Y (en) * | 2003-04-17 | 2004-07-07 | 力致科技股份有限公司 | Reciprocation and rotation reverse gear |
| CN101764458A (en) * | 2008-12-25 | 2010-06-30 | 思考株式会社 | Eccentric rotor and small-sized brushless vibration motor with the rotor |
| CN105610272A (en) * | 2014-11-19 | 2016-05-25 | 日本电产精密株式会社 | Vibration motor |
| CN206517275U (en) * | 2015-12-25 | 2017-09-22 | 日本电产精密株式会社 | Vibrating motor, band vibration section substrate and noiseless device for informing |
| CN106803699A (en) * | 2016-07-19 | 2017-06-06 | 李相宜 | Brushless DC vibrating motor |
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| CN109038939A (en) | 2018-12-18 |
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Denomination of invention: A permanent magnet AC flat vibration motor and its application method Effective date of registration: 20221228 Granted publication date: 20210420 Pledgee: Dongyang Branch of China Construction Bank Co.,Ltd. Pledgor: ZHEJIANG DONGYANG DONGCI CHENGJI ELECTRONIC Co.,Ltd. Registration number: Y2022330003719 |
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