CN203326847U - Linear vibration motor - Google Patents
Linear vibration motor Download PDFInfo
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- CN203326847U CN203326847U CN201320258084XU CN201320258084U CN203326847U CN 203326847 U CN203326847 U CN 203326847U CN 201320258084X U CN201320258084X U CN 201320258084XU CN 201320258084 U CN201320258084 U CN 201320258084U CN 203326847 U CN203326847 U CN 203326847U
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- linear vibration
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- fixed
- vibration motor
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Abstract
The utility model relates to a linear vibration motor, comprising a shell, a pedestal, conic springs, magnetic bowls, mass blocks, a spiral flexible circuit board, hollow coils, a pair of magnets, and upper and lower buffer foam. One end of each conic spring is fixed on the inner side of the shell, while the other end of the conic spring is fixed with the corresponding magnetic bowl. The springs and the mass blocks form a simple harmonic vibration system. The like poles of the magnets are arranged opposite to each other. The lower buffer foam is adhered on the surface of the pedestal. The linear vibration motor is characterized in that the upper buffer foam is adhered on the surface of each mass block between the corresponding conic spring and the mass block. The beneficial effects are that compared with linear vibration motors in the prior art, in which the buffer foam is adhered on the central inner side of the shell close to the magnets, the linear vibration motor of the utility model has the characteristics of being simple in structure, reduced in noise, good in effect, and convenient to operate. Through the slight improvement of the production technology, the problem that the central parts of the springs protrude in the reverse direction and occasionally contact with the upper surfaces of the mass blocks to generate noises can be solved, and the quality requirement of users can be satisfied.
Description
Technical field
The utility model belongs to vibrating motor, relates in particular to a kind of linear vibration electric motor.
Background technology
Refer to accompanying drawing 2, linear vibration electric motor comprises that casing and base form the outside motor shape, an end is fixed in the interior volute spring of casing and forms Harmonic Vibration System, is fixed in the mass inboard with the mass that is fixed in the spring other end by the magnetic bowl, and is drawn out to the hollow coil magnet relative with a pair of homopolarity of base center with being fixed in casing in the motor outside by the spirality flexible circuit board.Its operation principle is to apply the alternating current of the simple harmonic quantity system frequency same frequency formed with the spring-mass piece to coil by flexible PCB, produce the exciting force with the resonance frequency same frequency under magnetic fields, make the spring-mass piece form resonance, produce vibration.Linear vibration electric motor, when vibration, can produce noise.At present, the noise of linear vibration electric motor prevents design, and employing will cushion the mode that foam is pasted on casing inside usually, and the buffering foam is attached to the position that the casing center inside approaches magnet, avoids spring center section and casing inner surface directly to contact the noise of generation.Like this, although the Oscillation Amplitude of restriction mass can reduce a part of noise.But, because volute spring one end is fixed on the internal side of shell top, the other end and magnetic bowl are fixed, during volute spring compression, the spring arm central part can oppositely be heaved certain altitude, the time and contact with the mass upper surface and produce noise.
The utility model content
The utility model is in order to overcome deficiency of the prior art, provides a kind of simple in structure, and noise is little, the linear vibration electric motor of dependable performance.
The utility model for achieving the above object, be achieved through the following technical solutions, a kind of linear vibration electric motor, comprise that casing, base, volute spring one end are fixed in internal side of shell, the volute spring other end and magnetic bowl are fixed, and forming Harmonic Vibration System, spirality flexible circuit board, magnet that the hollow coil is relative with a pair of homopolarity with mass, susceptor surface is pasted lower buffering foam, it is characterized in that: upper buffering foam is pasted on the mass surface between described volute spring and mass.
Described buffering foam shape in the form of a ring.
The dangerous position of spring arm central part when the position of described buffering foam and volute spring compression touches.
Beneficial effect: linear vibration electric motor will cushion foam than prior art and stick on mode that the casing center inside approaches magnet positions and have simple in structurely, easy and simple to handle, reduce the good characteristics of noise result.Production technology is slightly made improvements, can solve the reverse bulge height of spring arm central part, the time and contact a difficult problem that produces noise with the mass upper surface, met user's quality requirement.
The accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is existing linear vibration electric motor structural representation.
In figure: 1 casing, 2 volute springs, 3 magnetic bowls, 4 masses, 5 coils, 6 flexible circuit board, 7 upside magnet, 8 iron plates, 9 bases, 10 downside magnet, 11 times buffering foams, cushion foam on 12.
Embodiment
Below in conjunction with preferred embodiment, details are as follows for the embodiment that foundation the utility model is provided:
Embodiment
Refer to accompanying drawing 1, linear vibration electric motor comprises that casing 1 peristome is connected with base 9 outer diameter parts, volute spring 2 one ends are fixed in casing, its other end and magnetic bowl 3 are fixing, the magnetic bowl is embedded in mass 4 hollow parts and is connected with mass, coil 5 is embedded in magnetic bowl inside diameter, two lead-in wires of coil are connected with the flexible circuit board 6 that is pasted on mass 4 surfaces, upside magnet 7 one ends are fixed in center in casing, the other end is fixed with the iron plate 8 of concentrating flux to use, downside magnet 10 1 ends are fixed in the base center, the practise physiognomy magnetic pole of opposite end of its other end magnetic pole and upside magnet is identical, susceptor surface is pasted lower buffering foam 11, upper buffering foam 12 is pasted on the mass surface that mass and spring face mutually.Upper and lower buffering foam shape in the form of a ring.The dangerous position of spring arm central part when the position of upper buffering foam and volute spring compression touches.
Apply the alternating current of the simple harmonic quantity system frequency same frequency formed with the spring-mass piece to coil by flexible PCB, the exciting force of generation and resonance frequency same frequency under magnetic fields, make the spring-mass piece form resonance, produces and vibrate.In vibration processes, volute spring compression, the reverse bulge height of spring arm central part just in time touches with upper buffering foam, has avoided spring to contact with mass and has produced noise.
The above, be only preferred embodiment of the present utility model, not structure of the present utility model done to any pro forma restriction.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of the technical solution of the utility model.
Claims (3)
1. a linear vibration electric motor, comprise that casing, base, volute spring one end are fixed in internal side of shell, the volute spring other end and magnetic bowl are fixed, and form Harmonic Vibration System, spirality flexible circuit board, magnet that the hollow coil is relative with a pair of homopolarity with mass, susceptor surface is pasted lower buffering foam, it is characterized in that: upper buffering foam is pasted on the mass surface between described volute spring and mass.
2. linear vibration electric motor according to claim 1, it is characterized in that: described buffering foam shape in the form of a ring.
3. linear vibration electric motor according to claim 1, it is characterized in that: the dangerous position of the spring arm central part when position of described buffering foam and volute spring compression touches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320258084XU CN203326847U (en) | 2013-05-14 | 2013-05-14 | Linear vibration motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320258084XU CN203326847U (en) | 2013-05-14 | 2013-05-14 | Linear vibration motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203326847U true CN203326847U (en) | 2013-12-04 |
Family
ID=49666139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320258084XU Expired - Fee Related CN203326847U (en) | 2013-05-14 | 2013-05-14 | Linear vibration motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203326847U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825421A (en) * | 2014-03-06 | 2014-05-28 | 三星高新电机（天津）有限公司 | Sponge-positioned magnet type linear vibration motor |
| CN106374713A (en) * | 2016-11-01 | 2017-02-01 | 四川安和精密电子电器有限公司 | Linear vibration motor |
| CN107437881A (en) * | 2017-09-14 | 2017-12-05 | 严振华 | Mobile phone linear oscillator generating means |
-
2013
- 2013-05-14 CN CN201320258084XU patent/CN203326847U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825421A (en) * | 2014-03-06 | 2014-05-28 | 三星高新电机（天津）有限公司 | Sponge-positioned magnet type linear vibration motor |
| CN106374713A (en) * | 2016-11-01 | 2017-02-01 | 四川安和精密电子电器有限公司 | Linear vibration motor |
| CN107437881A (en) * | 2017-09-14 | 2017-12-05 | 严振华 | Mobile phone linear oscillator generating means |
| CN107437881B (en) * | 2017-09-14 | 2023-12-29 | 包头磁馨电子有限公司 | Linear vibration generating device for mobile phone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140514 |