CN205566063U - Linear vibrating motor - Google Patents
Linear vibrating motor Download PDFInfo
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- CN205566063U CN205566063U CN201620117136.5U CN201620117136U CN205566063U CN 205566063 U CN205566063 U CN 205566063U CN 201620117136 U CN201620117136 U CN 201620117136U CN 205566063 U CN205566063 U CN 205566063U
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- Apparatuses For Generation Of Mechanical Vibrations (AREA)
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Abstract
The utility model provides a linear vibrating motor, including shell, oscillator and fix on the shell and with oscillator parallel arrangement's stator, the oscillator includes the quality piece and inlays the vibrating mass who establishes in the quality piece, wherein, vibrating mass includes the permanent magnet, the stator is including being fixed in the magnetic conduction piece on the shell, be fixed with on the magnetic conduction piece and lead magnetic brush, lead magnetic brush 's brush head and vibrating mass's permanent magnet springiness contaction, perhaps, be fixed with on vibrating mass's permanent magnet and lead magnetic brush, the brush head and magnetic conduction piece springiness contaction of leading magnetic brush, the magnetic conduction piece receives effect the same with the direction of vibration of oscillator and/or the magnetic field force that the person is opposite, the magnetic field force to make a concerted effort the direction the same with relative displacement's direction. Lead magnetic brush through setting up between permanent magnet and magnetic conduction piece, can concentrate the magnetic field that the permanent magnet sent to guide to the magnetic conduction piece to increase the effective magnetic field of oscillator as far as possible, make the effort between oscillator and the magnetic conduction piece bigger, obtain the strong sense effect of shaking.
Description
Technical Field
The utility model relates to a consumer electronics technical field, more specifically relates to a be applied to portable consumer electronics's linear vibration motor.
Background
With the development of communication technology, portable electronic products, such as mobile phones, handheld game consoles or handheld multimedia entertainment devices, have come into the lives of people. In these portable electronic products, a micro vibration motor is generally used for system feedback, such as incoming call prompt of a mobile phone, vibration feedback of a game machine, and the like. However, with the trend of electronic products being lighter and thinner, various components inside the electronic products also need to adapt to the trend, and micro vibration motors are no exception.
An existing micro vibration motor generally includes an upper cover, a lower cover forming a vibration space with the upper cover, a vibrator (including a weight block and a permanent magnet) performing linear reciprocating vibration in the vibration space, an elastic support member connecting the upper cover and making the vibrator perform reciprocating vibration, and a coil located a distance below the vibrator.
In the micro vibration motor with the structure, the force for driving the vibrator to vibrate is completely derived from the magnetic field force between the vibrator and the coil, the vibration sense of the vibrator vibration is small due to the limited magnetic field force between the vibrator and the coil, and the stress of the vibrator is changed due to the change of the position of the vibrator relative to the position of the coil in the vibration process of the vibrator, so that the linear vibration response speed is not uniform, the vibration of the vibrator generates nonlinear change, and the vibration sense balance of an electronic product is influenced.
In the micro vibration motor with the structure, magnetic lines of force generated by the permanent magnet in the vibrator are relatively dispersed, the magnetic conduction strength between the vibrator and the coil is relatively weak, and the relative magnetic flux passing through the coil is relatively small, so that the acting force is relatively small, and the vibration effect is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the utility model aims at providing a linear vibration motor to the magnetic conduction piece replaces the stator coil, utilize magnetic conduction piece and oscillator at the produced effort of the in-process that takes place the displacement, thereby promote the oscillator and do reciprocating motion in the direction parallel with stator place plane, and lead the magnetic brush through setting up between permanent magnet and magnetic conduction piece, concentrate the magnetic field that sends the permanent magnet and guide to the magnetic conduction piece, thereby increase the effective magnetic field of oscillator as far as possible, make the effort between oscillator and the magnetic conduction piece bigger, obtain strong sense effect of shaking.
According to the utility model, the linear vibration motor comprises a shell, a vibrator and a stator which is fixed on the shell and is arranged in parallel with the vibrator, wherein the vibrator comprises a mass block and a vibration block which is embedded in the mass block; wherein, the vibrating block comprises a permanent magnet; the stator comprises a magnetic conduction block fixed on the shell; a magnetic conducting brush is fixed on the magnetic conducting block, and a brush head of the magnetic conducting brush is in elastic contact with the permanent magnet of the vibrating block; or a magnetic conducting brush is fixed on the permanent magnet of the vibrating block, and a brush head of the magnetic conducting brush is in elastic contact with the magnetic conducting block; the magnetic conduction block is acted by a magnetic field force in the same direction and/or opposite direction to the vibration direction of the vibrator; when the vibrator is in a balanced state, the resultant force of the magnetic field forces is zero; when the magnetic conduction block is acted by excitation force and generates relative displacement with the vibrator in the vibration direction of the vibrator, the resultant force direction of the magnetic field force is the same as the relative displacement direction, and the magnitude of the resultant force of the magnetic field force is in direct proportion to the magnitude of the relative displacement.
Wherein, the preferred scheme is that the magnetic conduction brush is of a herringbone structure or an arc structure; the top end of the middle part of the magnetic conduction brush is fixed on the magnetic conduction block, and brush heads arranged at the two tail ends of the magnetic conduction brush are respectively in elastic contact with the permanent magnet of the vibration block; or the two tail ends of the magnetic conducting brush are respectively fixed on the permanent magnets, and the brush head arranged at the top end of the middle part of the magnetic conducting brush is in elastic contact with the magnetic conducting block.
Preferably, the magnetic brush is made of a magnetic metal material.
The vibrating block comprises a first permanent magnet, a second permanent magnet and a third permanent magnet which are sequentially arranged in an adjacent mode, and the magnetic conducting blocks are symmetrically located on the upper side and the lower side of the second permanent magnet.
Wherein, the preferred scheme is that the magnetic field generating device also comprises a push-pull structure which is arranged at the two ends of the permanent magnet in a bilateral symmetry manner; the push-pull structure comprises a push-pull magnet embedded in the mass block and push-pull coils positioned on one side or the upper side and the lower side of the push-pull magnet.
Preferably, two pairs of push-pull magnet fixing slots are arranged on the mass block, and two push-pull magnets distributed up and down and a magnetic yoke positioned between the two push-pull magnets are accommodated in each pair of push-pull magnet fixing slots.
Wherein, the preferred scheme is that the middle part of the mass block is provided with an avoiding structure corresponding to the push-pull coil and the magnetic conduction block; a groove for accommodating the vibrating block is arranged in the mass block; the push-pull magnet fixing grooves are positioned on two sides of the groove.
Preferably, the vibrating block is fixed in the groove in a gluing mode.
Wherein, the preferable scheme is that the device also comprises a flexible circuit board; the flexible circuit board is fixedly connected with the shell; and the push-pull coil is communicated with an external circuit through a circuit on the flexible circuit board.
The preferred scheme is that two ends of the mass block are elastically connected with the shell through elastic supporting pieces, and the elastic supporting pieces suspend the mass block in the shell.
Utilize above-mentioned according to the utility model discloses a linear vibration motor, the motor design thinking that has just provided the drive by the magnetic field force of oscillator and coil has jumped out now, replace the stator coil with the magnetic conduction piece, supplementary with excitation force generation part, the oscillator begins to take place the change of displacement when receiving this excitation force effect, but in follow-up vibration process, can reach the purpose of self-drive completely through the interact between magnetic conduction piece and the permanent magnet, when it is in the free vibration state, as long as this part self-drive power is enough big, will very easy obtain great vibration; compared with the resonance working principle in the prior art, the self-driven working mode can greatly shorten the time required by starting the system.
Further, the utility model discloses a set up between permanent magnet and magnetic conduction piece and lead the magnetic brush, can concentrate the magnetic field that the permanent magnet sent and guide to magnetic conduction piece to increase the effective magnetic field of vibrating mass as far as possible, make the effort between oscillator and the magnetic conduction piece bigger, obtain strong sense effect of shaking.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows an exploded structural view of a linear vibration motor according to an embodiment of the present invention;
fig. 2 shows a cross-sectional view of a linear vibration motor according to an embodiment of the present invention;
fig. 3-1 shows a schematic view of a linear vibration motor according to an embodiment of the present invention;
fig. 3-2 shows a second principle schematic diagram of a linear vibration motor according to an embodiment of the present invention;
fig. 4-1 is a schematic view showing a first structure of a magnetically conductive brush of a linear vibration motor according to an embodiment of the present invention;
fig. 4-2 shows a second structural diagram of a magnetic brush of a linear vibration motor according to an embodiment of the present invention.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
As used in the description of the embodiments below, the "mass" may also be referred to as a "counterweight", and refers to a high quality, high density metal mass that is secured to a vibrating mass that generates vibrations to enhance the vibration balance.
In addition, the utility model discloses mainly used micro-vibration motor's improvement, nevertheless do not exclude to be applied to large-scale vibration motor with the technique in the utility model. However, for the sake of expression, in the following description of the embodiments, "linear vibration motor" and "micro vibration motor" are denoted to have the same meaning.
For the purpose of describing the structure of the linear vibration motor of the present invention in detail, the following description will discuss specific embodiments of the present invention in detail with reference to the accompanying drawings.
In order to solve the unbalanced problem of the sense of vibration that causes because the drive power that the magnet of oscillator and stator coil provided is unbalanced among the current miniature vibrating motor structure, the utility model provides a linear vibrating motor to the stator coil is replaced to the magnetic conduction piece, has overcome the stator coil because the unbalanced problem of atress that the change of circular telegram direction and electric current size unstability lead to, effectively strengthens miniature vibrating motor's the sense of vibration balanced.
Fig. 1 shows an exploded structure of a linear vibration motor according to an embodiment of the present invention; fig. 2 shows a sectional structure of a linear vibration motor according to an embodiment of the present invention.
As shown in fig. 1 and fig. 2, the present invention provides a linear vibration motor, which includes a housing, a vibrator, and a stator fixed on the housing and arranged in parallel with the vibrator, wherein the vibrator includes a mass block 9 and a central vibration block (or vibration block, the same below) arranged in the middle of the mass block 9, and the central vibration block includes at least one permanent magnet; the stator comprises magnetic conduction blocks 3a and 3b fixed on the shell, magnetic conduction brushes 12a and 12b are fixed on the magnetic conduction blocks, and brush heads of the magnetic conduction brushes are in elastic contact with the permanent magnets of the vibrating block; or a magnetic conducting brush is fixed on the permanent magnet of the vibrating block, and a brush head of the magnetic conducting brush is in elastic contact with the magnetic conducting block.
Wherein, the magnetic conduction blocks 3a and 3b are acted by two magnetic field forces with the same and/or opposite directions in the vibration direction of the vibrator; when the vibrator is in a balanced state, the resultant force of the two magnetic field forces is zero; when the magnetic conduction blocks 3a and 3b are subjected to the action of the excitation force and generate relative displacement with the vibrator in the vibration direction of the vibrator, the resultant force direction of the two magnetic field forces is the same as the relative displacement direction, and the magnitude of the resultant force of the two magnetic field forces is in direct proportion to the magnitude of the relative displacement.
Specifically, due to the action of the magnetic conductive brushes 12a and 12b, originally dispersed magnetic lines of force guided out from the magnetic conductive yoke in the vibrating block are guided by the magnetic conductive brushes 12a and 12b to intensively penetrate through the magnetic conductive blocks on the upper and lower sides, so that the magnetic flux penetrating through the magnetic conductive blocks is increased as much as possible, and the magnetic field of the vibrating block is fully utilized. In a specific application, the magnetic brushes 12a and 12b are made of a magnetic conductive material having an elastic structure, such as a metal material capable of magnetic conduction, or an elastic plastic sheet coated with a magnetic conductive material.
Wherein, the shell includes the epitheca 1 of cuboid structure and with the fixed platelike structure's of epitheca 1 adaptation connection inferior valve 11.
In the embodiment shown in fig. 1 and 2, the central vibrating block includes three permanent magnets which are adjacently arranged and magnetized in the horizontal direction, the adjacent ends of the adjacently arranged permanent magnets have the same polarity, and the magnetic conducting blocks are of a sheet structure, are arranged on the upper side and the lower side of the permanent magnet in the middle of the central vibrating block, and are symmetrical relative to the center of the central vibrating block.
In other words, the central vibrating mass includes a first permanent magnet 7a, a second permanent magnet 7b and a third permanent magnet 7c arranged in sequence, a first magnetic yoke 8a is disposed between the first permanent magnet 7a and the second permanent magnet 7b, a second magnetic yoke 8b is disposed between the second permanent magnet 7b and the third permanent magnet 7c, a first magnetic block 3a is disposed on the upper side of the second permanent magnet 7b, a second magnetic block 3b is disposed on the lower side of the second permanent magnet 7b, and the first magnetic block 3a and the second magnetic block 3b are both fixed on the housing and have a certain gap with the second permanent magnet 7 b. The first magnetic conduction block 3a and the second magnetic conduction block 3b are symmetrically distributed relative to the second permanent magnet 7b, and when the oscillator is in a balanced static state, the distances between the first magnetic conduction block 3a and the second magnetic conduction block 3b and the end parts of the first permanent magnet 7a and the third permanent magnet 7c are the same.
It should be noted that the magnetic conductive blocks may also be symmetrically or asymmetrically distributed on the upper and lower sides of the vibrating block, and the latter arranges the magnetic conductive blocks on one side of the vibrating block. For example, the vibrating mass comprises three adjacent permanent magnets; the three adjacent permanent magnets are magnetized in the horizontal direction, and the adjacent ends of the adjacent permanent magnets have the same polarity; and the two magnetic conduction blocks are symmetrically arranged on the upper side and the lower side of the vibrating block and correspond to the permanent magnets in the middle of the vibrating block.
Or the vibrating block comprises a permanent magnet, two magnetic conduction blocks are arranged, and the two magnetic conduction blocks are both positioned on the upper side or the lower side of the vibrating block; or the two magnetic conduction blocks are distributed corresponding to the left end and the right end of the permanent magnet respectively and are symmetrical about the central axis of the permanent magnet.
Or the vibrating block comprises three permanent magnets which are adjacently arranged, the three adjacent permanent magnets are magnetized in the horizontal direction, the adjacent ends of the adjacent permanent magnets have the same polarity, the magnetic conduction blocks are six, and the six magnetic conduction blocks are symmetrically arranged on the upper side and the lower side of the three adjacent permanent magnets respectively.
The vibrating block comprises three permanent magnets which are adjacently arranged, the three adjacent permanent magnets are magnetized in the horizontal direction, and the adjacent ends of the adjacent permanent magnets have the same polarity; the magnetic conduction block is provided with two blocks; the two magnetic conduction blocks are asymmetrically arranged on the upper side and the lower side of the vibrating block; and the magnetic conduction blocks which are asymmetrically arranged at the upper side and the lower side of the vibrating block are symmetrical about the center of the vibrating block.
Fig. 3-1 and 3-2 show the principle structure of the stationary state and the vibration state of the linear vibration motor according to the embodiment of the present invention from different angles, respectively.
As shown in fig. 3-1 and 3-2, when the transducer is in a balanced state, the first magnetic conductive block 3a receives two magnetic field forces F1 and F2 with the same magnitude and opposite directions; when the first magnetic conductive block 3a undergoes a relative displacement d to the right from the vibrator in the vibration direction of the vibrator (including the permanent magnets 7a, 7b, 7c and the magnetic conductive yokes 8a, 8b disposed between the adjacently disposed permanent magnets), the magnetic force F1 received by the first magnetic conductive block 3a is smaller than F2, that is, when the displacement of the first magnetic conductive block 3a (the displacement is the relative displacement with the permanent magnets because the magnetic conductive blocks are fixed to the housing) varies as d, the magnetic force dF received by the first magnetic conductive block 3a is F2-F1 is Kd >0, where K is the proportionality coefficient of the magnetic force received by the magnetic conductive blocks, and K is related to the sizes of the magnetic conductive blocks, the permanent magnets and the positions therebetween. Similarly, the second magnetic conduction block 3b receives a magnetic force dF of F4-F3 Kd >0, and the first magnetic conduction block 3a and the second magnetic conduction block 3b together drive the vibrating block to vibrate in a direction parallel to the magnetic conduction blocks.
Therefore, when the magnetic conduction block is displaced relative to the vibrator in the vibration direction of the vibrator, the resultant force direction of the two magnetic field forces is the same as the relative displacement direction of the magnetic conduction block, and the magnitude of the resultant force of the two magnetic field forces is in a direct proportional relation with the magnitude of the relative displacement, so that the inverse stiffness change of the magnetic conduction block is realized, the vibrator is ensured to generate resonance, and the vibration effect is more remarkable.
Fig. 4-1 and 4-2 show two kinds of magnetic conductive brush structures of a linear vibration motor according to an embodiment of the present invention. The magnetic conducting brush shown in fig. 4-1 is of an arc-shaped structure, the magnetic conducting brush shown in fig. 4-2 is of a herringbone structure, the top end of the herringbone structure is fixedly connected with the magnetic conducting block, and the two tail ends of the herringbone structure are respectively in elastic contact with the two magnetic conducting yokes of the vibrating block. Or the two tail ends are respectively fixed on the magnetic conducting yoke, and the top end of the herringbone is elastically contacted with the magnetic conducting block. Or the top end of the herringbone is fixedly connected with the magnetic conduction block, and the two tail ends of the herringbone are respectively in elastic contact with the permanent magnet yoke. Or the two tail ends are respectively fixed on the permanent magnet, and the top end of the herringbone is elastically contacted with the magnetic conduction block.
The utility model discloses at specific in-process of using, also can increase/reduce the permanent magnet in the central vibrating mass according to the product needs of reality, for example, adopt and exceed three above permanent magnets and constitute central vibrating mass according to above-mentioned mode to the upper and lower both sides of each permanent magnet for central vibrating mass all set up a magnetic conduction piece, with effort between reinforcing magnetic conduction piece and the oscillator, reinforcing linear vibrating motor's the sense of shaking.
In another embodiment of the present invention, in order to enhance the magnetic conduction function of the magnetic conduction block, the magnetic conduction block 3a or 3b can be designed to be a special-shaped structure, such as a U-shaped structure or an i-shaped structure, so as to obtain the magnetic flux as large as possible, thereby enhancing the vibration of the linear vibration motor. Wherein, the two ends of the magnetic conduction block corresponding to the permanent magnet can be provided with extension parts for magnetic convergence; or, the two ends of the magnetic conduction block 3 with the I-shaped structure are also provided with extension parts for magnetic collection.
In the above embodiments, an excitation force generating member for exciting the magnetic conductive block is further provided, and the excitation force generating member generates an excitation force to disturb the vibrator vibration.
Specifically, as shown in fig. 1 and 2, the excitation force generating member may be a push-pull structure disposed symmetrically on both left and right sides of the vibrating mass. The push-pull structure comprises push-pull magnets 5a, 5a ', 5b and 5 b' and push-pull coils 2a, 2a ', 2b and 2 b' which are symmetrically arranged on one side or the upper side and the lower side of the push-pull magnets; the vibrator comprises a mass block 9, and an avoidance stator and an avoidance structure of a push-pull coil are arranged in the middle of the mass block 9; a groove for accommodating the central vibrating block and the push-pull structure is arranged in the mass block; the central vibrating block and the push-pull structure can be fixed in the groove by gluing or laser electric welding.
Specifically, a groove matched with the vibrator structure is arranged in the middle of the mass block, and the vibrator is fixed in the groove. Two pairs (four) of push-pull magnet fixing grooves are arranged at two ends of the groove, the push-pull magnets are accommodated in the push-pull magnet fixing grooves, two push-pull magnets in an up-and-down structure and magnetic conductive yokes 6a and 6b positioned between the two push-pull magnets are arranged in each push-pull magnet fixing groove, and corresponding push-pull coils are respectively arranged at the upper side and the lower side of each push-pull magnet fixing groove. The push-pull coil and the push-pull magnet are arranged in parallel, and an alternating current signal is introduced into the push-pull coil to excite the magnetic conduction block to bear force, so that the vibration block is driven to vibrate, and the vibration of the linear vibration motor is realized; when the vibrator starts to reciprocate along the vibration direction, in the subsequent vibration process, the push-pull magnet and the push-pull coil are not required to continuously provide driving force, and the vibrator can vibrate only by means of the interaction force between the magnetic conduction block and the magnets in the vibration block.
It should be noted that the push-pull coil may be disposed on one side of the push-pull magnet or symmetrically disposed on the upper and lower sides of the push-pull magnet, the structure of the push-pull magnet is not limited to the two pairs of structures shown in the drawings, and the number and position of the push-pull magnet and the push-pull coil in the push-pull structure may also be flexibly set according to the needs of the product, for example, a set of push-pull magnet and the push-pull coil corresponding to the push-pull magnet are respectively disposed on two sides of the groove of the fixed vibrating block, and the push-pull coil is disposed on one side of the push-pull magnet, or the push-pull coil is asymmetrically disposed on the upper and lower sides.
The linear vibration motor of the present invention further includes a Flexible Printed Circuit Board (PFCB) 4 and an elastic supporting member 10; wherein, the flexible circuit board 4 is fixedly connected with the shell; and the push-pull coil is communicated with an external circuit through a circuit on the flexible circuit board 4. Elastic support members 10 are respectively arranged at the left end and the right end of the mass block 9, the push-pull structure is arranged between the elastic support members 10 and the vibrating block, and the elastic support members 10 are fixed between the vibrator and the shell in a limiting mode to provide elastic restoring force for vibration of the vibrator.
When the magnetic conduction block is displaced relative to the vibrator in the vibration direction of the vibrator, the vibrator moves towards one end of the linear vibration motor until the resultant force of the two magnetic field forces applied to the vibrator is smaller than the elastic force of the elastic supporting piece at one end of the mass block, so that the vibrator moves towards the opposite direction until the resultant force of the two magnetic field forces applied to the vibrator is smaller than the elastic force of the elastic supporting piece at the other end of the mass block, and the reciprocating motion of the vibrator is realized.
According to the utility model discloses a linear vibrating motor, from the angle of the magnetic conduction intensity between magnetic conduction piece and the oscillator, add the magnetic brush between vibrating mass and magnetic conduction piece for magnetic line of force/magnetism line of induction that the vibrating mass sent can pass the magnetic conduction piece more intensively, with the magnetic field utilization ratio that improves the vibrating mass.
The linear vibration motor according to the present invention is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the linear vibration motor of the present invention without departing from the scope of the invention. Therefore, the scope of the present invention should be determined by the content of the appended claims.
Claims (10)
1. A linear vibration motor comprises a shell, a vibrator and a stator which is fixed on the shell and is arranged in parallel with the vibrator, wherein the vibrator comprises a mass block and a vibration block embedded in the mass block; it is characterized in that the preparation method is characterized in that,
the vibrating block comprises a permanent magnet; the stator comprises a magnetic conduction block fixed on the shell;
a magnetic conducting brush is fixed on the magnetic conducting block, and a brush head of the magnetic conducting brush is in elastic contact with the permanent magnet of the vibrating block; or,
a magnetic conducting brush is fixed on the permanent magnet of the vibrating block, and a brush head of the magnetic conducting brush is in elastic contact with the magnetic conducting block;
the magnetic conduction block is acted by a magnetic field force in the same direction as and/or opposite to the vibration direction of the vibrator; wherein,
when the vibrator is in a balanced state, the resultant force of the magnetic field force is zero;
when the magnetic conduction block is acted by excitation force and generates relative displacement with the vibrator in the vibration direction of the vibrator, the resultant force direction of the magnetic field force is the same as the relative displacement direction, and the magnitude of the resultant force of the magnetic field force is in direct proportion to the magnitude of the relative displacement.
2. The linear vibration motor of claim 1,
The magnetic conductive brush is of a herringbone structure or an arc structure;
the top end of the middle part of the magnetic conduction brush is fixed on the magnetic conduction block, and brush heads arranged at two tail ends of the magnetic conduction brush are respectively in elastic contact with the permanent magnet of the vibration block; or,
two tail ends of the magnetic conduction brush are respectively fixed on the permanent magnets, and a brush head arranged at the top end of the middle part of the magnetic conduction brush is in elastic contact with the magnetic conduction block.
3. The linear vibration motor according to claim 1 or 2,
the magnetic brush is made of a metal material capable of conducting magnetism.
4. The linear vibration motor of claim 1,
the vibrating block comprises three first permanent magnets, a second permanent magnet and a third permanent magnet which are sequentially arranged in an adjacent mode, and the magnetic conduction blocks are symmetrically located on the upper side and the lower side of the second permanent magnet.
5. The linear vibration motor of claim 1,
the push-pull structure is arranged at the two ends of the permanent magnet in a bilateral symmetry manner; wherein,
the push-pull structure comprises a push-pull magnet embedded in the mass block and push-pull coils positioned on one side or the upper side and the lower side of the push-pull magnet.
6. The linear vibration motor of claim 5, wherein two pairs of push-pull magnet fixing grooves are formed on the mass block, and two push-pull magnets arranged up and down and a magnetic yoke positioned between the two push-pull magnets are received in each pair of push-pull magnet fixing grooves.
7. The linear vibration motor of claim 6,
an avoidance structure corresponding to the push-pull coil and the magnetic conduction block is arranged in the middle of the mass block;
a groove for accommodating the vibrating block is arranged in the mass block;
the push-pull magnet fixing grooves are positioned on two sides of the groove.
8. The linear vibration motor of claim 7,
the vibrating block is fixed in the groove in a gluing mode.
9. The linear vibration motor of claim 5,
the flexible printed circuit board is also included;
the flexible circuit board is fixedly connected with the shell; and the number of the first and second groups,
the push-pull coil is communicated with an external circuit through a circuit on the flexible circuit board.
10. The linear vibration motor of claim 1,
the two ends of the mass block are elastically connected with the shell through elastic supporting pieces, and the elastic supporting pieces are used for suspending the mass block in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620117136.5U CN205566063U (en) | 2016-02-05 | 2016-02-05 | Linear vibrating motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620117136.5U CN205566063U (en) | 2016-02-05 | 2016-02-05 | Linear vibrating motor |
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| CN205566063U true CN205566063U (en) | 2016-09-07 |
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| CN201620117136.5U Active CN205566063U (en) | 2016-02-05 | 2016-02-05 | Linear vibrating motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017133152A1 (en) * | 2016-02-05 | 2017-08-10 | 歌尔声学股份有限公司 | Linear vibration motor |
| CN110350752A (en) * | 2018-04-04 | 2019-10-18 | 日本电产精密株式会社 | Vibrating motor |
| WO2021134360A1 (en) * | 2019-12-30 | 2021-07-08 | 瑞声声学科技(深圳)有限公司 | Vibration electric motor |
-
2016
- 2016-02-05 CN CN201620117136.5U patent/CN205566063U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017133152A1 (en) * | 2016-02-05 | 2017-08-10 | 歌尔声学股份有限公司 | Linear vibration motor |
| US11469656B2 (en) | 2016-02-05 | 2022-10-11 | Goertek Inc. | Linear vibrating motor |
| CN110350752A (en) * | 2018-04-04 | 2019-10-18 | 日本电产精密株式会社 | Vibrating motor |
| WO2021134360A1 (en) * | 2019-12-30 | 2021-07-08 | 瑞声声学科技(深圳)有限公司 | Vibration electric motor |
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Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |