CN101316065A - Linear vibration motor - Google Patents
Linear vibration motor Download PDFInfo
- Publication number
- CN101316065A CN101316065A CNA2008100632063A CN200810063206A CN101316065A CN 101316065 A CN101316065 A CN 101316065A CN A2008100632063 A CNA2008100632063 A CN A2008100632063A CN 200810063206 A CN200810063206 A CN 200810063206A CN 101316065 A CN101316065 A CN 101316065A
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- vibration motor
- fixed
- linear vibration
- yoke
- magnet steel
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Abstract
The invention relates to a linear vibration motor, belonging to the technical field of a part which provides vibration signals for the communication tools such as mobile phones. The linear vibration motor comprises a lower bracket and an inverted cup-shaped shell which is connected with the lower bracket; a leaf spring is provided with an external plane, an internal plane and an elastic connecting part which is connected between the external plane and the internal plane; the external plane of the leaf spring is connected with the top plate of the shell; the internal plane of the leaf spring is fixed with the upper end surface of a fixed sleeve; the periphery of the fixed sleeve is provided with a heavy hammer; the fixed sleeve is internally provided with yoke iron and magnetic steel which is fixed at the lower end of the yoke iron; the position of the lower bracket corresponding to the lower part of the magnetic steel is provided with a coil; a circular gap is formed between the yoke iron, the magnetic iron and the internal wall of the fixed sleeve; the coil can enter the circular gap; a vertical guiding shaft is fixed on the lower bracket corresponding to the lower part of the center of the magnetic steel; the yoke iron and the magnetic steel center are provided with guiding holes which are matched with a guiding shaft. The linear vibration motor can effectively lead the heavy hammer, the magnetic steel, etc. to motion linearly up and down, thus reducing the generation of the radial offset; in addition, the coil is not damaged owing to the bumping during the motion process.
Description
Technical field
The present invention relates to a kind of linear vibration motor, belong to the technical field of parts that vibration signal is provided for communication tools such as mobile phones.
Technical background
A kind of linear vibration motor that uses resonance frequency (publication number: CN1661891), comprising: removable unit, have magnet, be used to hold the yoke of described magnet and have predetermined quality, be used for weight around the side of described yoke; Base assembly is positioned under the described removable unit and has coil block; Shell is used to cover described base assembly and the described removable unit that is positioned on the described base assembly; And elastic component, be configured as the sheet spring, described elastic component comprises the top board that is fixed to described shell or the top outerplanar portion of described base assembly, relative with described outerplanar portion and be connected to the inner plane portion of the top or the bottom of described removable unit, and at least two connecting portions, be used for connecting described inner plane portion and described outerplanar portion along curve, described inner plane portion has the diameters with about 15 to 70% couplings of the outer dia of described removable unit, and described elastic component can be deformed to and makes described inside and outside planar portions move to the degree of co-planar locations from their parallel positions spaced apart a predetermined distance, thus, under the interaction of the electromagnetic force of magnetic force that produces by described magnet and the preset frequency that produces by described coil block, described removable unit vertical vibration.
In the technique scheme, easily do not produce the skew coil of wounding thereby magnet, yoke and weight have the location in motion process, cause the fracture of coil varnish envelope curve, generation is opened circuit, and makes the motor can't operate as normal.
Summary of the invention
The object of the invention is to provide a kind of weight and magnet steel etc. of making effectively to carry out rectilinear motion up and down, thereby reduce the generation of radial deflection amount, coil can not be collided and the linear vibration motor that damages in motion process, the easy generation is offset the coil of wounding thereby the magnet, yoke and the weight that have solved the prior art existence do not have the location in motion process, cause the fracture of coil varnish envelope curve, generation is opened circuit, make motor can't operate as normal etc. problem.
Above-mentioned technical purpose of the present invention mainly solves by the following technical programs: it comprises bottom bracket and the cup-shaped shell that falls that is connected on the bottom bracket, the sheet spring have outerplanar and inner plane and be connected outerplanar and inner plane between elastic joint part, the outerplanar of sheet spring is connected with the top board of shell, the inner plane of sheet spring and the upper surface of fixed cover are fixed, the fixed cover outer periphery is equipped with weight, be provided with yoke and the magnet steel that is fixed on the yoke lower end in the fixed cover, bottom bracket is provided with coil corresponding to the position of magnet steel below, form the annular gap between described yoke and magnet steel and the fixed cover inwall, coil can enter in the annular gap, described bottom bracket is fixed with the vertical axis of guide corresponding to the magnet steel central lower, and described yoke and magnet steel center are provided with the pilot hole that matches with the axis of guide.Wherein, by increasing the axis of guide, and corresponding pilot hole is set on yoke and magnet steel, can guarantee effectively that weight, fixed cover, magnet steel and yoke carry out rectilinear motion up and down, play good guide effect, thereby reduce the generation of radial deflection amount, make between weight circumference and the shell can not bump, also further reduced the noise that unit of the present invention turns over journey; Simultaneously, also avoid the collision between fixed cover, magnet steel and yoke and the coil, guarantee that coil can not damage because of collision.
As preferably, be fixed with the second bubble silk floss on the bottom that described pilot hole upper end and fixed cover constitute.On the bottom that the pilot hole of yoke and magnet steel and fixed cover constitute, fix the continuous direct collision that then can avoid between axis of guide upper end and the fixed cover of second bubble, thereby further reduce the noise in the operation process of the present invention.
As preferably, it is continuous that described sheath top plate inner surface is provided with first bubble, and described first bubble is continuous corresponding to sheet spring inner plane top.Wherein, inner surface in sheath top plate is provided with the first bubble silk floss corresponding to the position above the sheet spring inner surface, can avoid in the direct collision between sheet spring and the sheath top plate under the drive of parts such as fixed cover, yoke, magnet steel and weight, the continuous effectively impact kinetic energy of absorbing sheet spring of first bubble, thereby the noise in the reduction operation process of the present invention.
As preferably, the top board center of described shell is provided with a fabrication hole, and the described first bubble silk floss is the loop configuration coaxial with described fabrication hole.Wherein, the top board center of shell is provided with fabrication hole and can makes things convenient for welding operation between sheet spring and the shell.
As preferably, the continuous thickness of described first bubble is that a times of outer casing thickness is to twice.Wherein, the Thickness Design that first bubble is continuous a times of outer casing thickness to guaranteeing on the one hand between the twice that the first bubble silk floss plays effective noise reduction effect, has guaranteed also that on the other hand parts such as weight have enough up-down vibration spaces.
As preferably, the position that described bottom bracket is provided with the axis of guide forms looping pit, the lower end of the described axis of guide and the looping pit close-fitting of convex.Wherein, because the size of the axis of guide is less, adopts the mode of close-fitting then to be beneficial to assembling of the present invention and guarantee the secure fixation of the axis of guide and the good guide of parts such as yoke, magnet steel and weight.
Therefore, the present invention has makes weight and magnet steel etc. carry out rectilinear motion up and down effectively, thereby reduces the generation of radial deflection amount, and coil can not be collided and characteristics such as damage in motion process.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment 1: as shown in Figure 1, on the bottom bracket 1 and be connected with down cup-shaped shell 2, the top board center of shell 2 is provided with a fabrication hole 17, sheet spring 3 have outerplanar 4 and inner plane 5 and be connected outerplanar 4 and inner plane 5 between elastic joint part 6, the outerplanar 4 of sheet spring 3 welds together with the top board of shell 2, the inner plane 5 of sheet spring 3 is fixed with the upper surface of fixed cover 7, the top board inner surface of shell 2 is provided with first bubble continuous 18, first bubble continuous 18 is corresponding to the top of the inner plane 5 of sheet spring 3, first bubble continuous 18 is the loop configuration coaxial with fabrication hole 17, the thickness of first bubble continuous 18 is the twice of shell 2 thickness, fixed cover 7 outer periphery are equipped with weight 8, be provided with yoke 9 and the magnet steel 10 that is fixed on yoke 9 lower ends in the fixed cover 7, form annular gap 11 between yoke 9 and magnet steel 10 and fixed cover 7 inwalls, the center of yoke 9 and magnet steel 10 is provided with pilot hole 13, is fixed with second bubble continuous 16 on the bottom that pilot hole 13 upper ends and fixed cover 7 constitute.
Bottom bracket 1 is provided with coil 12 corresponding to the position of magnet steel 10 belows, coil 12 can enter in the annular gap 11, bottom bracket 1 is fixed with the vertical axis of guide 14 corresponding to the central lower of magnet steel 10, bottom bracket 1 is provided with the looping pit 15 of the position formation convex of the axis of guide 14, the lower end of the axis of guide 14 and looping pit 15 close-fittings, lead 14 matches with pilot hole 13.
Inner surface in sheath top plate is provided with the first bubble silk floss corresponding to the position above the sheet spring inner surface, can avoid in the direct collision between sheet spring and the sheath top plate under the drive of parts such as fixed cover, yoke, magnet steel and weight, the continuous effectively impact kinetic energy of absorbing sheet spring of first bubble, thereby the noise in the reduction operation process of the present invention; By increasing the axis of guide, and corresponding pilot hole is set on yoke and magnet steel, can guarantee effectively that weight, fixed cover, magnet steel and yoke carry out rectilinear motion up and down, play good guide effect, thereby reduce the generation of radial deflection amount, make between weight circumference and the shell can not bump, also further reduced the noise that unit of the present invention turns over journey; Simultaneously, also avoid the collision between fixed cover, magnet steel and yoke and the coil, guarantee that coil can not damage because of collision; In addition, on the bottom that the pilot hole of yoke and magnet steel and fixed cover constitute, fix the continuous direct collision that then can avoid between axis of guide upper end and the fixed cover of second bubble, thereby further reduce the noise in the operation process of the present invention.
Claims (6)
1, a kind of linear vibration motor, comprise bottom bracket and the cup-shaped shell that falls that is connected on the bottom bracket, the sheet spring have outerplanar and inner plane and be connected outerplanar and inner plane between elastic joint part, the outerplanar of sheet spring is connected with the top board of shell, the inner plane of sheet spring and the upper surface of fixed cover are fixed, the fixed cover outer periphery is equipped with weight, be provided with yoke and the magnet steel that is fixed on the yoke lower end in the fixed cover, bottom bracket is provided with coil corresponding to the position of magnet steel below, it is characterized in that forming the annular gap between described yoke and magnet steel and the fixed cover inwall, coil can enter in the annular gap, described bottom bracket is fixed with the vertical axis of guide corresponding to the magnet steel central lower, and described yoke and magnet steel center are provided with the pilot hole that matches with the axis of guide.
2, linear vibration motor according to claim 1, it is continuous to it is characterized in that being fixed with second bubble on the bottom that described pilot hole upper end and fixed cover constitute.
3, linear vibration motor according to claim 1 and 2, it is continuous to it is characterized in that described sheath top plate inner surface is provided with first bubble, and described first bubble is continuous corresponding to sheet spring inner plane top.
4, linear vibration motor according to claim 3 is characterized in that the top board center of described shell is provided with a fabrication hole, and the described first bubble silk floss is the loop configuration coaxial with described fabrication hole.
5, linear vibration motor according to claim 3, the thickness that it is characterized in that the described first bubble silk floss are that a times of outer casing thickness arrives twice.
6, linear vibration motor according to claim 1 and 2 is characterized in that described bottom bracket is provided with looping pit, the lower end of the described axis of guide and the looping pit close-fitting of the position formation convex of the axis of guide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100632063A CN101316065A (en) | 2008-07-22 | 2008-07-22 | Linear vibration motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100632063A CN101316065A (en) | 2008-07-22 | 2008-07-22 | Linear vibration motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101316065A true CN101316065A (en) | 2008-12-03 |
Family
ID=40106943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100632063A Pending CN101316065A (en) | 2008-07-22 | 2008-07-22 | Linear vibration motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101316065A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468736A (en) * | 2010-11-17 | 2012-05-23 | 三星电机株式会社 | Linear vibrator |
| CN103004067A (en) * | 2010-07-12 | 2013-03-27 | Lg伊诺特有限公司 | Linear vibrator |
| CN102025253B (en) * | 2009-09-15 | 2013-11-13 | 台达电子工业股份有限公司 | Magnetic vibrator |
| CN102468736B (en) * | 2010-11-17 | 2016-12-14 | Mplus株式会社 | Linear vibrator |
-
2008
- 2008-07-22 CN CNA2008100632063A patent/CN101316065A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025253B (en) * | 2009-09-15 | 2013-11-13 | 台达电子工业股份有限公司 | Magnetic vibrator |
| CN103004067A (en) * | 2010-07-12 | 2013-03-27 | Lg伊诺特有限公司 | Linear vibrator |
| CN103004067B (en) * | 2010-07-12 | 2015-06-17 | 易音特电子株式会社 | Linear vibrator |
| CN102468736A (en) * | 2010-11-17 | 2012-05-23 | 三星电机株式会社 | Linear vibrator |
| US8736121B2 (en) | 2010-11-17 | 2014-05-27 | Samsung Electro-Mechanics Co., Ltd. | Linear vibrator |
| US9059623B2 (en) | 2010-11-17 | 2015-06-16 | Sasmung Electro-Mechanics Co., Ltd. | Linear vibrator |
| CN102468736B (en) * | 2010-11-17 | 2016-12-14 | Mplus株式会社 | Linear vibrator |
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Open date: 20081203 |