CN205595982U - Linear vibrating motor - Google Patents
Linear vibrating motor Download PDFInfo
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- CN205595982U CN205595982U CN201620089288.9U CN201620089288U CN205595982U CN 205595982 U CN205595982 U CN 205595982U CN 201620089288 U CN201620089288 U CN 201620089288U CN 205595982 U CN205595982 U CN 205595982U
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- vibration motor
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- linear vibration
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- 230000002093 peripheral effect Effects 0.000 claims description 43
- 230000005489 elastic deformation Effects 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000000725 suspension Substances 0.000 abstract 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 210000003811 finger Anatomy 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000003813 thumb Anatomy 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The utility model provides a linear vibrating motor, including external shell body to and accept the oscillator in external shell body, the oscillator supports suspension in external shell body by elastic support elements, its characterized in that just is provided with the trompil on the terminal surface to the oscillator direction of vibration at external shell body, and the vibration space of oscillator extends to in the trompil. Utilize above -mentioned utility model, can keep vibration space when increasing the magnetic circuit volume through setting up the trompil on external shell body to improve the vibration performance of motor.
Description
Technical Field
The utility model relates to the technical field of motors, more specifically relates to a linear vibrating motor of Z axle direction vibration.
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.
Specifically, fig. 1 shows a sectional structure of a conventional vibration motor.
As shown in fig. 1, the conventional vibration motor includes a housing (including an upper housing 2 ' and a lower housing 11 ' adapted to the upper housing 2 '), and a vibrator, a stator coil 6 ' and an auxiliary system accommodated in the housing, the vibrator being supported by an elastic support 8 ' and suspended in the housing; the vibrator comprises a magnetic circuit system and a balancing weight 3 ', wherein the magnetic circuit system further comprises a magnetic yoke 4', a magnet 5 'and a washer 7'; the auxiliary system comprises an electrical connector 9 'and a cushion pad 10', etc.
It is known that the volume and the movement space of the magnetic circuit system of the conventional Z-direction vibration motor are limited to a certain extent due to the existence of the outer case, and the performance of the motor is also affected to a certain extent. Therefore, it is a difficult problem to reduce the volume of the motor and ensure that the motor performance is not affected.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention is to provide a linear vibration motor to solve the problem that the volume and the motion space of the current motor magnetic circuit system are limited by the housing.
The utility model provides a linear vibration motor, which comprises a peripheral shell and a vibrator accommodated in the peripheral shell, wherein the vibrator is supported by an elastic supporting piece and suspended in the peripheral shell; wherein, be provided with the trompil on the terminal surface that the peripheral casing just right oscillator vibration direction, the vibration space of oscillator extends to in the trompil.
In addition, the preferred structure is that the vibrator comprises a magnetic circuit system and a balancing weight sleeved and fixed on the outer side of the magnetic circuit system; one end of the elastic supporting piece is fixedly connected with the vibrator, and the other end of the elastic supporting piece is fixedly connected with the peripheral shell.
Further, it is preferable that the size of the opening of the outer casing is larger than the size of the cross section of the magnetic circuit system, and the vibration space of the magnetic circuit system extends into the opening.
In addition, the preferred structure is that the peripheral shell comprises an upper shell and a lower shell matched with the upper shell; wherein, the upper shell is a semi-closed cylindrical structure, and the lower shell is fixed at the open end of the upper shell; the opening is arranged on the closed end surface of the upper shell.
Further, it is preferable that the elastic support member has an elastic deformation space in a vertical direction, and the vibrator vibrates in the vertical direction under support of the elastic support member; the opening of the peripheral shell is arranged on the end face of the upper shell, which is positioned on the upper side of the magnetic circuit system.
In addition, the magnetic circuit system preferably includes a magnetic yoke having a basin-like structure, a magnet and washers accommodated in the magnetic yoke, and a magnetic gap is formed between a side wall of the magnetic yoke and the magnet; the linear vibration motor also comprises a stator coil accommodated in the peripheral shell; one end of the stator coil is fixed on the peripheral shell, and the other end of the stator coil is suspended in the magnetic gap.
In addition, the preferable structure is that a buffer structure is combined on the end face of the peripheral shell corresponding to the vibration direction of the vibrator, and the buffer structure comprises a buffer pad positioned on the lower shell and an elastic pad positioned on the upper shell; wherein, the cushion pad is of a sheet structure; the elastic pad is attached to the outer side of the opening of the upper shell.
In addition, the preferred structure is that the balancing weight is a ring-shaped structure, and the inner side of the balancing weight is fixedly connected with the side wall of the magnetic guide yoke.
In addition, it is preferable that an electrical connector is provided between the outer casing and the stator coil, and the stator coil is electrically connected to the electrical connector.
In addition, it is preferable that the elastic support is a plate spring including a fixed end connected to the outer case, a fixed plate connected to the vibrator, and an elastic connection arm between the fixed end and the fixed plate.
According to the above technical scheme, the utility model discloses a linear vibration motor through set up trompil and the bullet pad that corresponds on peripheral casing, in extending oscillator vibration space to the trompil of peripheral casing, simultaneously, also can increase magnetic circuit's volume, reinforcing linear vibration motor's the sense 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 is a cross-sectional view of a conventional motor;
fig. 2 is an exploded view of a linear vibration motor according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a linear vibration motor according to an embodiment of the present invention.
Wherein the reference numerals include: the spring washer 1, 1 ', the upper shell 2, 2 ', the opening 21, the balancing weight 3, 3 ', the magnetic yoke 4, 4 ', the magnet 5, 5 ', the stator coil 6, 6 ', the washer 7, 7 ', the elastic support member 8, 8 ', the electric connector 9, 9 ', the buffer pad 10, 10 ', and the lower shell 11, 11 '.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
For the purpose of describing the linear vibration motor of the present invention in detail, specific embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 2 shows an exploded structure of a linear vibration motor according to an embodiment of the present invention; fig. 3 shows a sectional structure of a linear vibration motor according to an embodiment of the present invention.
As shown in fig. 2 to fig. 3, the novel vibration motor according to the embodiment of the present invention includes a peripheral housing, a vibrator and a stator coil 6 housed in the peripheral housing, wherein the vibrator is supported by an elastic supporting member 8 and suspended in the peripheral housing, an electrical connecting member 9 is disposed between the peripheral housing and the stator coil 6, and one end of the stator coil 6 is fixed to the electrical connecting member; wherein, set up trompil 21 on the terminal surface that the peripheral casing just right oscillator vibration direction, the vibration space of oscillator can extend to in the trompil 21. The electrical connector 9 may be a Flexible Printed Circuit Board (FPCB) or a conductive Board.
Specifically, the oscillator includes magnetic circuit and the balancing weight 3 that the cover was established and was fixed in the magnetic circuit outside, elastic support piece 8's one end and 3 fixed connection of balancing weight, the other end and peripheral casing fixed connection to hang the oscillator and establish in peripheral casing, provide the elastic restoring force for the vibration of oscillator through elastic support piece 8. The magnetic circuit system further comprises a magnetic conductive yoke 4 with a basin-shaped structure, a magnet 5 accommodated in the magnetic conductive yoke 4, and a washer 7 attached to one side of the magnet 5 far away from the magnetic conductive yoke 4, a magnetic gap is formed between the side wall of the magnetic conductive yoke 4 and the magnet 5, and the other end of the stator coil 6 is suspended in the magnetic gap.
The embodiment of the utility model provides an among the linear vibration motor, magnetic conduction yoke 4 can adopt the material preparation of high magnetic conduction to form, can play radiating effect through gummed mode and 3 fixed connection of balancing weight in the use, avoids magnetic circuit during operation high temperature, guarantees linear vibration motor's stable performance.
Wherein, pass through the electric current signal in stator coil 6, according to the left hand rule: the left hand is stretched to enable the thumb to be perpendicular to the other four fingers and to be located in the same plane, so that the magnetic induction lines generated by the stator coil 6 flow in from the palm of the hand, the four fingers point to the direction of the introduced current, and the pointing direction of the thumb is the direction of the ampere force applied to the stator coil 6. Since the stator coil 6 is fixed to the electric connector so as not to move, the magnetic circuit system receives a driving force in the direction opposite to that of the stator coil 6 based on the relationship between the acting force and the reaction force. When the current direction of the stator coil 6 is changed, the direction of the reaction force applied to the magnetic circuit system is changed, the motion is alternately performed, and the vibrator formed by the magnetic circuit system and the balancing weight 3 reciprocates in the peripheral shell, so that the vibration of the linear vibration motor is realized.
The utility model discloses an among the linear vibration motor, balancing weight 3 is the annular structure, and the inboard fixed laminating of balancing weight 3 is in the periphery of the lateral wall of magnetic yoke 4. The position of the peripheral shell corresponding to the magnetic circuit system is provided with the opening 21, meanwhile, the height of the counterweight block 3 is set to be smaller than the height of the magnetic circuit system, the size of the opening 21 is larger than the sectional size of the magnetic circuit system, in the vibration process of the magnetic circuit system, the motion space of the vibrator can be extended into the opening 21, the quality of the vibrator can be maximized, and therefore the vibration quantity of the system is kept under the condition that the height of a product is reduced; in addition, the arrangement of the opening on the peripheral shell can also increase the volume and the vibration space of the magnetic circuit system, so that the stator coil 6 can obtain the magnetic flux as much as possible, and the vibration sense of the linear vibration motor is enhanced.
In another embodiment of the present invention, the peripheral housing comprises an upper housing 2 and a lower housing 11 adapted to the upper housing 2; wherein, the upper casing 2 is a semi-closed cylindrical structure, one end of which is a closed end, the other end is an open end, and the lower casing 11 is fixed at the open end of the upper casing 2, so as to form a space for accommodating the vibrator and the stator coil 6 in cooperation with the upper casing 2. Wherein, the opening 21 is arranged on the end surface of the closed end of the upper shell 2, and the fixed spring washer 1 is attached to the outer side of the opening 21. It should be noted that, in the present embodiment, a motor vibrating in the Z direction (the Z direction here is along the vertical direction, and can be regarded as the thickness direction of the motor) is shown, and based on the technical problem solved by the present invention, the opening 21 needs to be provided on the end surface of the peripheral casing (specifically, the upper casing 2) corresponding to the vibration direction of the vibrator, as can be seen from fig. 2 and 3, in the present embodiment, the opening 21 is specifically provided on the end surface of the upper casing 2 located on the upper side of the magnetic circuit system.
In addition, a buffer structure is combined on the end face of the peripheral shell corresponding to the vibration direction of the vibrator, the buffer structure comprises a spring pad 1 positioned on the upper shell, wherein the spring pad 1 is the conventional requirement in the installation process of a motor product, as shown in fig. 1 and 3, the outer ends of the upper shells 2 and 2 'of the motor structure in the prior art or the motor structure in the application are combined with the spring pads 1 and 1'; in contrast, since the upper case 2 is further provided with the opening 21 in the present application, the cushion 1 shown in fig. 3 is attached to the outside of the opening 21 and seals the opening 21.
The utility model discloses an among the linear vibrating motor, the main effect of bullet pad 1 is cushioned and steps up to make linear vibrating motor transmit the vibration sense, guarantee to fall the reliability. In addition, in order to avoid the direct collision with the peripheral shell when the vibrator vibrates, the linear vibration motor of the utility model also comprises a buffer cushion 10 which is positioned on the lower shell 11 and corresponds to the positions of the magnet 5 and the washer 7; wherein, be provided with the through-hole at electric connector 9's center, be provided with blotter 10 fixed slot in the position that peripheral casing corresponds the through-hole, blotter 10 is spacing in the fixed slot to be located same vertical line with magnet 5 and the china department 7 that are located stator coil 6, at the vibration in-process of oscillator, can play certain cushioning effect.
Specifically, the buffer pad 10 may be a silicone pad or other material with certain elasticity. It is further noted that the cushion 10' as shown in FIG. 1 is specifically designed with a raised configuration; in the present application, as shown in fig. 2 and 3, the cushion pad 10 is designed as a circular sheet structure, and the end surface thereof is a plane, and there is no protrusion like the prior art.
In another embodiment of the present invention, the elastic supporting member 8 can adopt a plate spring, the plate spring includes a fixed end connected to the peripheral housing, a fixed disk connected to the vibrator, and an elastic connecting arm between the fixed end and the fixed disk, the vibrator (including the magnetic circuit system and the weight 3 fixedly connected to the magnetic circuit system) is suspended in the space formed by the peripheral housing through the elastic supporting member 8, and an elastic restoring force along the vertical direction (Z direction) is provided for the vibration of the vibrator.
It can be seen from the above embodiment that, the utility model provides a linear vibration motor sets up trompil and corresponding bullet pad on peripheral casing, can extend the vibration space of oscillator to the trompil of peripheral casing in, simultaneously, also can increase magnetic circuit's volume, makes stator coil can obtain magnetic flux as far as possible, strengthens linear vibration motor's the sense of shaking to keep the vibration volume of motor under the condition that reduces motor product overall dimension, ensure the stable performance of product.
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 peripheral shell and a vibrator accommodated in the peripheral shell, wherein the vibrator is supported by an elastic supporting piece and suspended in the peripheral shell; it is characterized in that the preparation method is characterized in that,
and an opening is formed in the end face, opposite to the vibration direction of the vibrator, of the peripheral shell, and the vibration space of the vibrator extends into the opening.
2. The linear vibration motor of claim 1,
the vibrator comprises a magnetic circuit system and a balancing weight sleeved and fixed on the outer side of the magnetic circuit system;
one end of the elastic supporting piece is fixedly connected with the vibrator, and the other end of the elastic supporting piece is fixedly connected with the peripheral shell.
3. The linear vibration motor of claim 2,
the size of the peripheral shell opening is larger than the cross-sectional size of the magnetic circuit system, and the vibration space of the magnetic circuit system extends into the opening.
4. The linear vibration motor of claim 1,
the peripheral shell comprises an upper shell and a lower shell matched with the upper shell; wherein,
the upper shell is of a semi-closed cylindrical structure, and the lower shell is fixed at the open end of the upper shell;
the opening is formed in the closed end face of the upper shell.
5. The linear vibration motor of claim 2,
the elastic supporting piece is provided with an elastic deformation space along the vertical direction, and the vibrator vibrates along the vertical direction under the support of the elastic supporting piece;
the opening of the peripheral shell is formed in the end face, located on the upper side of the magnetic circuit system, of the upper shell.
6. The linear vibration motor of claim 5,
the magnetic circuit system comprises a magnetic yoke with a basin-shaped structure, a magnet and a washer which are accommodated in the magnetic yoke, and a magnetic gap is formed between the side wall of the magnetic yoke and the magnet;
the linear vibration motor further comprises a stator coil accommodated in the outer casing; wherein,
one end of the stator coil is fixed on the peripheral shell, and the other end of the stator coil is suspended in the magnetic gap.
7. The linear vibration motor of claim 5,
a buffer structure is combined on the end face of the peripheral shell corresponding to the vibration direction of the vibrator, and the buffer structure comprises a buffer pad positioned on the lower shell and a spring pad positioned on the upper shell; wherein,
the buffer pad is of a sheet structure, and the elastic pad is attached to the outer side of the opening of the upper shell.
8. The linear vibration motor of claim 6,
the balancing weight is of a circular ring-shaped structure, and the inner side of the balancing weight is fixedly connected with the side wall of the magnetic guide yoke.
9. The linear vibration motor of claim 6,
and an electric connector is arranged between the peripheral shell and the stator coil, and the stator coil is conducted with the electric connector.
10. The linear vibration motor of claim 1,
elastic support piece is the piece formula spring, include with stiff end that peripheral casing connects, with the fixed disk that the oscillator is connected and be located elastic connection arm between stiff end and the fixed disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620089288.9U CN205595982U (en) | 2016-01-28 | 2016-01-28 | Linear vibrating motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620089288.9U CN205595982U (en) | 2016-01-28 | 2016-01-28 | Linear vibrating motor |
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| Publication Number | Publication Date |
|---|---|
| CN205595982U true CN205595982U (en) | 2016-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620089288.9U Active CN205595982U (en) | 2016-01-28 | 2016-01-28 | Linear vibrating motor |
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| Country | Link |
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| CN (1) | CN205595982U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107484089A (en) * | 2017-07-26 | 2017-12-15 | 苏州逸巛声学科技有限公司 | A kind of receiver and its assembly technology |
| WO2021174560A1 (en) * | 2020-03-02 | 2021-09-10 | 瑞声声学科技(深圳)有限公司 | Linear motor |
-
2016
- 2016-01-28 CN CN201620089288.9U patent/CN205595982U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107484089A (en) * | 2017-07-26 | 2017-12-15 | 苏州逸巛声学科技有限公司 | A kind of receiver and its assembly technology |
| WO2021174560A1 (en) * | 2020-03-02 | 2021-09-10 | 瑞声声学科技(深圳)有限公司 | Linear motor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
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. |