CN205792138U - Linear vibration motor - Google Patents
Linear vibration motor Download PDFInfo
- Publication number
- CN205792138U CN205792138U CN201620501068.2U CN201620501068U CN205792138U CN 205792138 U CN205792138 U CN 205792138U CN 201620501068 U CN201620501068 U CN 201620501068U CN 205792138 U CN205792138 U CN 205792138U
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- China
- Prior art keywords
- elastic
- fixing part
- vibration motor
- elastic sheet
- linear vibration
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 239000012634 fragment Substances 0.000 abstract description 9
- 230000003287 optical effect Effects 0.000 abstract 4
- 238000004519 manufacturing process Methods 0.000 description 5
- 241000463219 Epitheca Species 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 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 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
This utility model provides a kind of linear vibration motor, including shell, houses vibrational system in the enclosure and for supporting the elastic supporting member for supporting optical member of vibrational system；Vibrational system includes mass and the permanent magnet being embedded in mass, and elastic supporting member for supporting optical member is separately fixed between mass two ends and shell；Elastic supporting member for supporting optical member includes that two intersect not in contact with the first shell fragment arranged and the second shell fragment；First shell fragment and the second shell fragment include the first fixed part, the second fixed part, elasticity arm between the first fixed part and the second fixed part respectively；Wherein, the first fixed part is mutually perpendicular to the second corresponding fixed part；First shell fragment and the second shell fragment are fixed between mass and shell by respective first fixed part and the second fixed part respectively.Utilize above-mentioned utility model, it is possible to increase the reliability of elastic supporting member for supporting optical member, it is to avoid vibrational system produces deflection in the Y direction of linear vibration motor.
Description
Technical Field
The utility model relates to the technical field of motors, more specifically relates to a portable 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.
The existing micro vibration motor generally comprises an upper cover, a lower cover, a vibrator (comprising a balancing weight and a permanent magnet) and a coil, wherein the lower cover and the upper cover form a vibration space, the vibrator conducts linear reciprocating vibration in the vibration space, the elastic sheet is connected with the upper cover and enables the vibrator to conduct reciprocating vibration, and the coil is located a certain distance below the vibrator.
The elastic sheet of the motor has various structural forms, can be formed by welding three or more simple vibrating arms, and needs to be welded for many times when the requirement of elastically supporting the balancing weight under a certain condition is met, and the welding consistency cannot be ensured; or two or more complex elastic sheets with superposed positions in orthographic projection are welded; or, a piece of elastic sheet with a complex structure is directly used.
The elastic sheets in the above situations have obvious defects in manufacturing or process, and are formed by combining excessively complicated elastic sheets or excessively complicated manufacturing processes, so that the production cost and the product reject ratio are easily increased, and the reliability of the product is difficult to ensure.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, an object of the present invention is to provide a linear vibration motor to solve the problems of complex structure of the prior spring plate, complicated manufacturing process, high production cost and poor product quality.
The utility model provides a linear vibration motor, which comprises a shell, a vibration system contained in the shell and an elastic supporting piece used for supporting the vibration system; the vibration system comprises a mass block and a permanent magnet embedded in the mass block, and the elastic supporting pieces are respectively fixed between two ends of the mass block and the shell; the elastic supporting piece comprises a first elastic sheet and a second elastic sheet which are crossed and not in contact arrangement; the first elastic sheet and the second elastic sheet respectively comprise a first fixing part, a second fixing part and an elastic arm positioned between the first fixing part and the second fixing part; the first fixing part is vertical to the corresponding second fixing part; the first elastic sheet and the second elastic sheet are respectively fixed between the mass block and the shell through the respective first fixing part and the second fixing part.
In addition, the preferable structure is that avoidance structures are respectively arranged at the intersection positions of the elastic arm of the first elastic sheet and the elastic arm of the second elastic sheet.
In addition, the preferred structure is that the first elastic sheet and the second elastic sheet are both L-shaped elastic sheets.
In addition, the preferable structure is that the first fixing part of the first elastic sheet and the first fixing part of the second elastic sheet are respectively welded on two vertical side walls at the same end of the mass block; the second fixing part of the first elastic sheet and the second fixing part of the second elastic sheet are respectively welded on the side wall of the shell opposite to the end face of the mass block.
Further, it is preferable that a reinforcing plate is provided at each of the first fixing portion and the second fixing portion.
In addition, the elastic supporting members at both ends of the mass are preferably arranged symmetrically with respect to the center of the mass.
In addition, preferably, three permanent magnets which are adjacently arranged are arranged in the mass block, all the three permanent magnets which are adjacently arranged are magnetized in the horizontal direction, and the adjacent ends of the adjacent permanent magnets have the same polarity.
Further, a preferred configuration is such that the motor further comprises a stator system housed in the housing; the stator system comprises a stator coil arranged corresponding to the permanent magnet; the winding direction of the stator coil is parallel to the direction of the N-S pole of the permanent magnet.
In addition, the preferable structure is that the device further comprises a flexible circuit board; the flexible circuit board is fixedly connected with the shell in a buckling mode; and the stator coil is fixed on the flexible circuit board and is communicated with an external circuit through a circuit on the flexible circuit board.
Further, it is preferable that the housing includes an upper case and a lower case which are fittingly coupled; and a washer plate is attached to one side of the mass block, which is close to the upper shell.
According to the above technical scheme, the elastic support member of the linear vibration motor of the present invention is composed of the first elastic sheet and the second elastic sheet which are crossed but spaced, and the two elastic sheets do not need to be welded and fixed, so that the structure is simple and the assembly is convenient; in addition, the deflection of the vibration system in the Y-axis direction of the linear vibration motor can be counteracted through the two elastic sheets, and the reliability of the elastic supporting piece is ensured.
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 an exploded view of a linear vibration motor according to an embodiment of the present invention;
fig. 2 is a plan view of a linear vibration motor according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an elastic supporting member according to an embodiment of the present invention.
Wherein the reference numerals include: the spring plate comprises an upper shell 1, a washer plate 2, a mass block 3, an elastic support piece 4, a first fixing part 41 of a first elastic sheet, a second fixing part 42 of the first elastic sheet, an avoiding structure 43 of the first elastic sheet, a first fixing part 41 ' of a second elastic sheet, a second fixing part 42 ' of the second elastic sheet, an avoiding structure 43 ' of the second elastic sheet, a permanent magnet 5, a stator coil 6, a flexible circuit board 7 and a lower shell 8.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
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 invention is mainly used for improving the micro vibration motor, but the application of the technology in the invention to the large vibration motor is not excluded. However, for convenience of description, in the following description of the embodiments, "linear vibration motor" and "micro vibration motor" are denoted as the same meaning.
For the purpose of describing the linear motor structure of the present invention in detail, specific embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 and 2 show an exploded structure and a plan view structure of a linear vibration motor according to an embodiment of the present invention, respectively.
As shown in fig. 1 and fig. 2, the linear vibration motor according to the embodiment of the present invention includes a housing, a vibration system accommodated in the housing, and an elastic support member 4 for supporting the vibration system; the vibration system comprises a mass block 3 and at least one permanent magnet embedded in the mass block 3, and elastic supporting pieces 4 are respectively fixed between two ends of the mass block 3 and the side wall of the shell, so that the mass block 3 is suspended in the shell and provides elastic restoring force for the vibration of the mass block; wherein, the elastic supporting members 4 at the two ends of the mass block 3 are symmetrically distributed about the center of the mass block 3.
Specifically, the elastic support 4 includes two first elastic sheets and two second elastic sheets which are crossed but not in contact arrangement; the first elastic sheet and the second elastic sheet respectively comprise a first fixing part, a second fixing part and an elastic arm positioned between the first fixing part and the second fixing part; the first fixing parts are perpendicular to the corresponding second fixing parts, and avoidance structures corresponding to the positions are arranged at the crossing positions of the elastic arms of the first elastic sheets and the elastic arms of the second elastic sheets respectively.
In particular, fig. 3 shows an elastic support structure according to an embodiment of the invention.
As shown together with fig. 1 to 3, the elastic supporting members 4 of the embodiment of the present invention are symmetrically disposed at two ends of the mass block 3, and indirectly fix the mass block 3 and the housing. The elastic support member 4 comprises a first elastic sheet and a second elastic sheet which are crossed and arranged at intervals, wherein the first elastic sheet and the second elastic sheet are L-shaped elastic sheets and respectively comprise a first fixing part, a second fixing part and an elastic arm positioned between the first fixing part and the second fixing part. The first fixing parts are perpendicular to the corresponding second fixing parts, and avoidance structures are arranged at the crossing positions of the elastic arms of the first elastic sheets and the elastic arms of the second elastic sheets respectively.
In the process of assembling the elastic sheets, the first fixing portion 41 of the first elastic sheet and the first fixing portion 41 ' of the second elastic sheet are respectively welded on two vertical side walls at the same end of the mass block 3, the second fixing portion 42 of the first elastic sheet and the second fixing portion 42 ' of the second elastic sheet are respectively welded on the same short side wall of the shell opposite to the end face of the mass block, and the avoiding structure 43 of the first elastic sheet and the avoiding structure 43 ' of the second elastic sheet are correspondingly arranged up and down and are mutually avoided. For example, the avoiding structure arranged on the elastic arm of the first elastic sheet is an upward concave notch, and the avoiding structure arranged on the elastic arm of the second elastic sheet correspondingly is a downward concave notch, so that the contact between the two elastic arms is avoided. The avoiding structure can be set to be in various shapes such as a rectangle or a U shape and the like, and is not limited to the arc shape shown in the attached drawings.
In addition, in order to ensure the welding firmness degree between the elastic support piece 4, the mass block 3 and the shell and prevent the elastic pieces from falling off or being welded through, reinforcing plates are arranged on the first fixing part and the second fixing part of the first elastic piece and the second elastic piece respectively, the first fixing part and the mass block are ensured to be welded and fixed through the corresponding reinforcing plates, and the second fixing part and the shell are welded and fixed.
In an embodiment of the present invention, three permanent magnets 5 distributed along the X-axis direction of the linear vibration motor are embedded in the mass block 3, the three adjacent permanent magnets 5 are magnetized in the horizontal direction, and the adjacent ends of the adjacent permanent magnets 5 have the same polarity, for example, the magnetizing directions of the three permanent magnets are N-S, S-N, N-S or S-N, N-S, S-N. The stator system includes a stator coil 6 provided corresponding to the permanent magnet 5, and the winding direction of the stator coil 6 is parallel to the direction of the N-S pole of the permanent magnet.
The utility model discloses at specific in-process of using, also can increase/reduce the permanent magnet number in the quality piece according to the product needs of reality, for example, adopt and exceed more than three permanent magnets and organize inside the quality piece according to above-mentioned mode to set up corresponding stator coil in one side of permanent magnet or upper and lower both sides, with effort between reinforcing permanent magnet and the stator coil, reinforcing linear vibration motor's the sense of shaking.
Further, the housing includes an upper case 1, a lower case 8 fitted to the upper case 1, and a Flexible wiring Board 7 (PFCB) fixed to the lower case 8 for communicating external circuits inside and outside the linear vibration motor; wherein, epitheca 1 is semi-closed cuboid structure, and inferior valve 8 is fixed at the open end of epitheca 1, pastes on the lateral wall that the quality piece 3 is close to epitheca 1 and is equipped with china department's board 2. The flexible circuit board 7 can be fixedly connected with the lower shell 8 in a buckling mode, and the stator coil 6 is fixed on the flexible circuit board 7 and is communicated with an external circuit through a circuit on the flexible circuit board 7.
According to the above embodiment, the utility model provides a linear vibration motor adopts two independent simple shell fragments respectively to constitute elastic support piece jointly, and contactless setting between two shell fragments to offset the ascending incline of vibration system in linear vibration motor Y axle side through two shell fragments, simple structure, equipment convenience can ensure elastic support piece's reliability and linear vibration motor's stability simultaneously.
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 comprising a housing, a vibration system housed within the housing, and a resilient support for supporting the vibration system; the vibration system comprises a mass block and a permanent magnet embedded in the mass block, and the elastic supporting pieces are respectively fixed between two ends of the mass block and the shell; it is characterized in that the preparation method is characterized in that,
the elastic supporting piece comprises a first elastic piece and a second elastic piece which are crossed and not in contact arrangement;
the first elastic sheet and the second elastic sheet respectively comprise a first fixing part, a second fixing part and an elastic arm positioned between the first fixing part and the second fixing part; wherein,
the first fixing part is vertical to the corresponding second fixing part;
the first elastic sheet and the second elastic sheet are respectively fixed between the mass block and the shell through a first fixing part and a second fixing part.
2. The linear vibration motor of claim 1,
and avoidance structures are respectively arranged at the crossed positions of the elastic arm of the first elastic sheet and the elastic arm of the second elastic sheet.
3. The linear vibration motor of claim 1,
the first elastic sheet and the second elastic sheet are both L-shaped elastic sheets.
4. The linear vibration motor of claim 1,
the first fixing part of the first elastic sheet and the first fixing part of the second elastic sheet are respectively welded on two vertical side walls at the same end of the mass block;
and the second fixing part of the first elastic sheet and the second fixing part of the second elastic sheet are respectively welded on the side wall of the shell opposite to the end surface of the mass block correspondingly.
5. The linear vibration motor of claim 1,
and reinforcing plates are arranged at the first fixing part and the second fixing part.
6. The linear vibration motor of claim 1,
the elastic supporting pieces are positioned at the two ends of the mass block and are symmetrically distributed about the center of the mass block.
7. The linear vibration motor of claim 1,
the mass block is internally provided with three permanent magnets which are adjacently arranged, the three permanent magnets which are adjacently arranged are all magnetized in the horizontal direction, and the polarities of the adjacent ends of the adjacent permanent magnets are the same.
8. The linear vibration motor of claim 1,
further comprising a stator system housed within the housing;
The stator system comprises a stator coil arranged corresponding to the permanent magnet;
and the winding direction of the stator coil is parallel to the direction of the N-S pole of the permanent magnet.
9. The linear vibration motor of claim 8,
the flexible printed circuit board is also included;
the flexible circuit board is fixedly connected with the shell in a buckling mode; and the number of the first and second groups,
the stator coil is fixed on the flexible circuit board and is communicated with an external circuit through a circuit on the flexible circuit board.
10. The linear vibration motor of claim 1,
the shell comprises an upper shell and a lower shell which are connected in a matching way;
and a washer plate is attached to one side of the mass block, which is close to the upper shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620501068.2U CN205792138U (en) | 2016-05-26 | 2016-05-26 | Linear vibration motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620501068.2U CN205792138U (en) | 2016-05-26 | 2016-05-26 | Linear vibration motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205792138U true CN205792138U (en) | 2016-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620501068.2U Expired - Fee Related CN205792138U (en) | 2016-05-26 | 2016-05-26 | Linear vibration motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205792138U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106911242A (en) * | 2017-04-28 | 2017-06-30 | 歌尔股份有限公司 | Linear vibration motor |
| CN110601489A (en) * | 2019-09-11 | 2019-12-20 | 浙江省东阳市东磁诚基电子有限公司 | Novel elastic sheet type linear motor and implementation method thereof |
| CN111316543A (en) * | 2017-11-20 | 2020-06-19 | 阿尔卑斯阿尔派株式会社 | Vibration generating device |
-
2016
- 2016-05-26 CN CN201620501068.2U patent/CN205792138U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106911242A (en) * | 2017-04-28 | 2017-06-30 | 歌尔股份有限公司 | Linear vibration motor |
| CN106911242B (en) * | 2017-04-28 | 2023-09-12 | 歌尔股份有限公司 | Linear vibration motor |
| CN111316543A (en) * | 2017-11-20 | 2020-06-19 | 阿尔卑斯阿尔派株式会社 | Vibration generating device |
| CN111316543B (en) * | 2017-11-20 | 2022-05-24 | 阿尔卑斯阿尔派株式会社 | Vibration generating device |
| CN110601489A (en) * | 2019-09-11 | 2019-12-20 | 浙江省东阳市东磁诚基电子有限公司 | Novel elastic sheet type linear motor and implementation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20200526 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |