CN108512387A - A kind of linear motor and electronic device - Google Patents
A kind of linear motor and electronic device Download PDFInfo
- Publication number
- CN108512387A CN108512387A CN201810447559.7A CN201810447559A CN108512387A CN 108512387 A CN108512387 A CN 108512387A CN 201810447559 A CN201810447559 A CN 201810447559A CN 108512387 A CN108512387 A CN 108512387A
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- Prior art keywords
- cylinder
- linear motor
- mass block
- coil
- magnetic
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
A kind of linear motor of present invention offer and electronic device, the linear motor include the interior shell for setting accommodating cavity；Fixed first cylinder and the second cylinder in the accommodating cavity；The magnetic oscillator being set between first cylinder and second cylinder, the both ends of the magnetic oscillator are respectively protruding into first cylinder and second cylinder, and the both ends of the magnetic oscillator are connect with first cylinder and second cylinder seal respectively；And coil, when the coil connects alternating current, the magnetic oscillator is reciprocating between first cylinder and second cylinder.In this way, magnetic oscillator by electromagnetic field effect in cylinder motion, and moving the internal and external pressure difference generated can make magnetic oscillator reciprocating with respect to cylinder, be vibrated to generate.Compared to the structure for providing elastic restoring force by shrapnel, the present invention can effectively solve the problem that leads to the problem that the vibration performance of linear motor is poor and service life is shorter because shrapnel fails.
Description
Technical field
The present invention relates to motor technologies field more particularly to a kind of linear motors and electronic device.
Background technology
With the development of the communication technology, electronic device, such as mobile phone, handheld device or palm multimedia recreation device into
Enter people’s lives.In these electronic devices, it usually needs vibration prompt is carried out, for example, vibration prompt when cell phone incoming call,
The vibration prompt etc. of game machine.
Generally use linear motor includes to realize the vibration prompt of electronic device, linear motor in the prior art at present
There are shell, oscillator reciprocating in the oscillation space of shell, for the reciprocating bullet for providing elastic restoring force of oscillator
Piece and the coil etc. that magnetic field is provided for oscillator.
In above-mentioned linear motor vibration processes, since shrapnel does not stop to be squeezed and provide by oscillator the elasticity of oscillator
Restoring force influences the vibration performance of linear motor and uses the longevity for a long time using shrapnel failure or elastic fatigue etc. easily occurs
Life.
Invention content
A kind of linear motor of offer of the embodiment of the present invention and electronic device, to solve shrapnel in linear motor in the prior art
For a long time using shrapnel failure or elastic fatigue easily occurs, influences the vibration performance and service life of linear motor the problem of.
In a first aspect, an embodiment of the present invention provides a kind of linear motors, including：
Inside set the shell of accommodating cavity；
Fixed first cylinder and the second cylinder in the accommodating cavity；
The magnetic oscillator being set between first cylinder and second cylinder, the both ends difference of the magnetic oscillator
Stretch into first cylinder and second cylinder, the both ends of the magnetic oscillator respectively with first cylinder and described
Two cylinder seals connect；And
Coil, when the coil connects alternating current, the magnetic oscillator is in first cylinder and second cylinder
Between it is reciprocating.
Second aspect, the embodiment of the present invention also provide a kind of electronic device, and the electronic device includes linear motor, described
Linear motor includes：
Inside set the shell of accommodating cavity；
Fixed first cylinder and the second cylinder in the accommodating cavity；
The magnetic oscillator being set between first cylinder and second cylinder, the both ends difference of the magnetic oscillator
Stretch into first cylinder and second cylinder, the both ends of the magnetic oscillator respectively with first cylinder and described
Two cylinder seals connect；And
Coil, when the coil connects alternating current, the magnetic oscillator is in first cylinder and second cylinder
Between it is reciprocating.
In the embodiment of the present invention, due to magnetic oscillator by electromagnetic field effect in cylinder motion, and move generate it is inside and outside
Draught head can make magnetic oscillator reciprocating with respect to cylinder, to make linear motor generate vibration.It is linear compared to existing
Motor provides elastic restoring force by shrapnel for magnetic oscillator, and the linear motor of the embodiment of the present invention can effectively solve the problem that because of shrapnel
It fails and leads to the problem that the vibration performance of linear motor is poor and service life is shorter.As it can be seen that the line of the embodiment of the present invention
Property motor have better vibration performance and longer service life.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without having to pay creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the explosive view of linear motor provided in an embodiment of the present invention；
Fig. 2 is the vibration principle schematic diagram of linear motor provided in an embodiment of the present invention；
Fig. 3 is the guide frame schematic diagram of linear motor provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained without creative efforts
Example, shall fall within the protection scope of the present invention.
Referring to Fig. 1, the embodiment of the present invention provides a kind of linear motor 100, including shell 10, the first cylinder 20, second
Cylinder 30, magnetic oscillator 40 and coil 50 etc., below will be described in detail said elements and its connection relation.
Accommodating cavity 11 is equipped in the shell 10, the accommodating cavity 11 is used to accommodate the element of the linear motor 100, institute
The shape for stating accommodating cavity 11 and the element of the linear motor 100 cooperate, such as can be cylindric, can also be in rectangular
Body shape can also be other shapes.In the embodiment of the present invention, the accommodating cavity 11 is rectangular-shape.The shell 10 can be with
Including upper cover 12 as shown in Figure 1, center 13 and lower cover 14, the upper cover 12, center 13 and lower cover 14 are sequentially connected, shape
At the accommodating cavity 11.In some embodiments of the invention, the upper cover 12 can be integrally formed with the center 13.
First cylinder 20 and second cylinder 30 fixation are housed in the accommodating cavity 11, first cylinder
20 are oppositely arranged with the opening of second cylinder 30, and first cylinder 20 and second cylinder 30 can be in accommodating cavities
It is fixedly connected, can also respectively be fixed with the both ends of the center 13 in the accommodating cavity 11 with the upper cover 12 respectively in 11
Connection, first cylinder 20 and second cylinder 30 can also be fixedly connected with the lower cover 14 respectively, and are housed in
In the accommodating cavity 11.In the embodiment of the present invention, first cylinder 20 and second cylinder 30 are in the accommodating cavity 11
The interior both ends with the center 13 are respectively fixedly connected with.
The magnetic oscillator 40 is set between first cylinder 20 and second cylinder 30, the magnetic oscillator 40
Both ends be respectively protruding into first cylinder 20 and second cylinder 30, the both ends of the magnetic oscillator 40 respectively with it is described
First cylinder 20 and second cylinder 30 are tightly connected, when the coil 50 connects alternating current, the magnetic oscillator 40
It is reciprocating between first cylinder 20 and second cylinder 30.It should be noted that being carried in the embodiment of the present invention
To the magnetic oscillator 40 both ends refer both to the first end of the magnetic oscillator 40 and with the magnetic oscillator 40 first
Hold opposite second end.
Optionally, the magnetic oscillator 40 includes mass block 41 and magnetic element 42, and the magnetic element 42 is set to
The side of the direction of the mass block 41 coil 50, the both ends of the mass block 41 are respectively protruding into 20 He of the first cylinder
In second cylinder 30, the both ends of the mass block 41 connect with first cylinder 20 and second cylinder 30 sealing respectively
Connect, the coil 50 connect alternating current when, the magnetic element 42 drive the mass block 41 first cylinder 20 with
It is reciprocating between second cylinder 30.It should be noted that the both ends for the mass block 41 mentioned in the embodiment of the present invention
Refer both to the first end of the mass block 41 and the second end opposite with the first end of the mass block 41.The magnetic oscillator 40
May include a magnetic element 42, or at least two magnetic elements 42, when the magnetic oscillator 40 includes at least two
When a magnetic element 42, at least two magnetic elements, 42 pole orientation is identical.In the embodiment of the present invention, the magnetic oscillator
40 include two magnetic elements 42, and the magnetic element 42 is magnet steel.
Optionally, storage tank is arranged in the side of the direction of the mass block 41 coil 50, and the magnetic element 42 is set
It is placed in the storage tank, to realize being fixedly connected between the magnetic element 42 and the mass block 41.It is appreciated that
, the storage tank can be the through-hole being opened on the mass block 41.In other embodiments of the invention, the magnetic member
Part 42 can be fixedly connected with the side of the direction of the mass block 41 coil 50, such as can be fixed by adhesive means
Connection.
Optionally, the mass block 41 includes quality block body 411 and is separately positioned on 411 both ends of quality block body
Piston 412, first cylinder 20 and second gas are stretched into the both ends of the mass block 41 by the piston 412 respectively
In cylinder 30.It should be noted that 411 both ends of quality block body mentioned in the embodiment of the present invention refer both to the quality block body
411 first end and the second end opposite with the first end of the quality block body 411.Optionally, the piston 412 and institute
Sealing element, such as sealing ring is respectively set in the junction for stating the first cylinder 20 and second cylinder 30, realizes the piston 412
It is tightly connected respectively with first cylinder 20 and second cylinder 30.The sealing element can arbitrarily realize sealing
Material is made, such as can be made of rubber material.The piston 412 can be integrally formed with the quality block body 411,
It can be fixedly connected by other means with the both ends of the quality block body 411, such as by way of welding or gluing
It achieves a fixed connection with the both ends of the quality block body 411.
It is the operation principle schematic diagram of linear motor provided in an embodiment of the present invention also referring to Fig. 2, Fig. 2, such as Fig. 2 institutes
Show, when coil 50 is not powered, mass block 41 is still among first cylinder 20 and second cylinder 30, the first gas
Cylinder 20 pressure P1 and the pressure P2 of the second cylinder 30 is equal with atmospheric pressure P.When coil 50 connects the electric current of first direction,
Under the action of electromagnetic field, magnetic element 42 drives the mass block 41 to be moved towards the direction of the first cylinder 20, first gas
20 internal volume of cylinder becomes smaller, and P1 increases, and generates the power in 30 direction of the second cylinder of direction, while inside second cylinder 30
Volume increases, and P2 reduces, and also generates the power in 30 direction of the second cylinder of direction, the power in two 30 directions of the second cylinder of direction
It is equivalent to the bounce of shrapnel, linear motor 100 is enabled to generate vibration sense within a very short time.Similarly, when coil 50 connects
When leading to second direction electric current opposite to the first direction, first cylinder 20 and second cylinder 30 generate court respectively
To the power in 20 direction of the first cylinder.
In the embodiment of the present invention, due to magnetic oscillator by electromagnetic field effect in cylinder motion, and move generate it is inside and outside
Draught head can make magnetic oscillator reciprocating with respect to cylinder, to make linear motor generate vibration.It is linear compared to existing
Motor provides elastic restoring force by shrapnel for magnetic oscillator, and the linear motor of the embodiment of the present invention can effectively solve the problem that because of shrapnel
It fails and leads to the problem that the vibration performance of linear motor is poor and service life is shorter.As it can be seen that the line of the embodiment of the present invention
Property motor have better vibration performance and longer service life.
It should also be noted that, since existing linear motor by shrapnel provides elastic restoring force for magnetic oscillator, it is magnetic
There are machineries to touch between oscillator and shrapnel, this makes vibration that existing linear motor generates, and there are larger noises.And this hair
The linear motor that bright embodiment provides realizes that vibration, magnetic oscillator are reciprocating with respect to cylinder by the draught head inside and outside cylinder
When there is no machineries to touch, in this way, the linear motor of the embodiment of the present invention vibration when, vibration sense is finer and smoother, noise smaller.
In addition, the structure of linear motor provided in an embodiment of the present invention is simpler relative to traditional elastic piece structure, group
Part is less, it is easier to assemble.
Optionally, the linear motor further includes the circuit board being electrically connected with the coil, and the circuit board is described
Coil provides alternating current.
In the embodiment, the linear motor 100 further includes circuit board 60, and the circuit board 60 is electrical with the coil 50
Connection, for providing alternating current for the coil 50.The circuit board 60 can be ordinary circuit board (Printed
Circuit Board, PCB), can also be flexible PCB (Flexible Printed Circuit, FPC), the present invention is real
Example is applied to be not specifically limited this.The shape of the circuit board 60 can be matched with the shape of the lower cover 14, and can be pasted
It is located on the lower cover 14.In the embodiment of the present invention, the coil 50 is fixed on the circuit board 60 that (such as coil can lead to
Mode for dispensing glue is crossed to be fixed on circuit board 60), the circuit board 60 is fixed on the lower cover 14 that (such as circuit board can lead to
It crosses double faced adhesive tape to be fixed on lower cover 14).The lead of the circuit board 60 exposes to the shell 10, for realizing with external electrical
The electric connections such as source, processor.
Optionally, the mass block is connected with the shell by guide frame, and the mass block is in the guiding
It is reciprocating between first cylinder and second cylinder under the guiding of structure.
It is the schematic diagram of the guide frame of linear motor provided in an embodiment of the present invention refering to Fig. 3, Fig. 3, as shown in figure 3,
It is connected by guide frame 70 between the mass block 41 and the shell 10, the mass block 41 is in the guide frame
Guiding under, it is reciprocating between first cylinder 20 and second cylinder 30.In this way, 70 energy of the guide frame
Enough being that the mass block 41 is reciprocating in the shell 10 provides guiding, and linear motor 100 is avoided to generate perpendicular to matter
The polarization of 41 direction of motion of gauge block, the vibrating noise generated so as to avoid mass block 41 because colliding shell 10.
Optionally, the guide frame includes the first groove being arranged in the housing sidewall, and is set to the matter
First guide pad of gauge block, first guide pad are connected with first groove；Alternatively,
The guide frame includes the second guide pad being arranged in the housing sidewall, and is arranged in the mass block
Second groove, second guide pad are connected with second groove.
In some embodiments of the invention, as shown in figure 3, the guide frame 70 may include setting the shell 10 to
The first groove 71 in few one side wall, and it is set to the first guide pad 72 of the mass block 41, first guide pad 72
It is connected with first groove 71, guiding is provided for the mass block 41 is reciprocating in the shell 10.Specifically
Ground, first guide pad 71 are contained in first groove 71, and being capable of the opposite sliding in first groove 71.Institute
Stating the first guide pad 72 can be integrally formed with the mass block 41.
In other embodiments of the invention, the guide frame 70 may include being arranged in at least one side wall of the shell 10
The second guide pad, and be set to the second groove of the mass block 41, second guide pad is matched with second groove
Connection is closed, guiding is provided for the mass block 41 is reciprocating in the shell 10.Specifically, second guide pad is received
It is dissolved in second groove, and being capable of the opposite sliding in second groove.Second guide pad can be with the shell
Body 10 is integrally formed.
The embodiment of the present invention also provides a kind of electronic device, and the electronic device includes the linear horse in above-described embodiment
It reaches, the electronic device can reach the identical advantageous effect of linear motor in above-described embodiment, and details are not described herein again.It is described
Electronic device can be any electronic device, such as：It is mobile phone, tablet computer (Tablet Personal Computer), above-knee
Type computer (Laptop Computer), personal digital assistant (personal digital assistant, abbreviation PDA), movement
Internet device (Mobile Internet Device, MID) or wearable device (Wearable Device), vehicle-mounted computer,
Camera, music player, E-book reader, navigator etc..
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of linear motor, which is characterized in that including：
Inside set the shell of accommodating cavity；
Fixed first cylinder and the second cylinder in the accommodating cavity；
The magnetic oscillator being set between first cylinder and second cylinder, the both ends of the magnetic oscillator are respectively protruding into
In first cylinder and second cylinder, the both ends of the magnetic oscillator respectively with first cylinder and second gas
Cylinder is tightly connected；And
Coil, when the coil connects alternating current, the magnetic oscillator is between first cylinder and second cylinder
It is reciprocating.
2. linear motor as described in claim 1, which is characterized in that the magnetic oscillator includes mass block and magnetic member
Part, the magnetic element are set to the side of the direction coil of the mass block, and the both ends of the mass block are respectively protruding into
In first cylinder and second cylinder, the both ends of the mass block respectively with first cylinder and second cylinder
It is tightly connected；
When the coil connects alternating current, the magnetic element drives the mass block in first cylinder and described second
It is reciprocating between cylinder.
3. linear motor as claimed in claim 2, which is characterized in that the mass block includes quality block body and is respectively set
Piston at quality block body both ends, the both ends of the mass block respectively by the piston stretch into first cylinder and
In second cylinder.
4. linear motor as claimed in claim 3, which is characterized in that the piston and first cylinder and second gas
The junction of cylinder is respectively arranged with sealing element.
5. linear motor as claimed in claim 4, which is characterized in that the sealing element is rubber material.
6. linear motor as claimed in claim 2, which is characterized in that the side of the direction coil of the mass block is equipped with
Storage tank, the magnetic element are set in the storage tank.
7. linear motor as claimed in claim 2, which is characterized in that the mass block is matched with the shell by guide frame
Connection is closed, the mass block is made past under the guiding of the guide frame between first cylinder and second cylinder
Multiple movement.
8. linear motor as claimed in claim 7, which is characterized in that the guide frame includes being arranged in the housing sidewall
The first groove, and be set to the first guide pad of the mass block, first guide pad coordinates with first groove
Connection；Alternatively,
The guide frame includes the second guide pad being arranged in the housing sidewall, and is arranged the second of the mass block
Groove, second guide pad are connected with second groove.
9. linear motor as described in claim 1, which is characterized in that the linear motor further includes electrically connecting with the coil
The circuit board connect, the circuit board provide alternating current for the coil.
10. a kind of electronic device, which is characterized in that the electronic device includes 1 to 9 any one of them line of the claims
Property motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810447559.7A CN108512387A (en) | 2018-05-11 | 2018-05-11 | A kind of linear motor and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810447559.7A CN108512387A (en) | 2018-05-11 | 2018-05-11 | A kind of linear motor and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108512387A true CN108512387A (en) | 2018-09-07 |
Family
ID=63400215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810447559.7A Pending CN108512387A (en) | 2018-05-11 | 2018-05-11 | A kind of linear motor and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108512387A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445343A (en) * | 2019-07-17 | 2019-11-12 | 瑞声科技（南京）有限公司 | Linear vibration motor |
| CN111277684A (en) * | 2020-01-21 | 2020-06-12 | 维沃移动通信有限公司 | Electronic device |
| WO2021227678A1 (en) * | 2020-05-15 | 2021-11-18 | 华为技术有限公司 | Linear motor apparatus and terminal device |
| CN114244054A (en) * | 2021-12-23 | 2022-03-25 | 苏州索迩电子技术有限公司 | Linear vibration motor and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660003A (en) * | 2015-02-02 | 2015-05-27 | 瑞声光电科技(常州)有限公司 | Flat linear vibration motor |
| CN107204695A (en) * | 2017-05-26 | 2017-09-26 | 维沃移动通信有限公司 | A kind of linear motor and mobile terminal |
-
2018
- 2018-05-11 CN CN201810447559.7A patent/CN108512387A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660003A (en) * | 2015-02-02 | 2015-05-27 | 瑞声光电科技(常州)有限公司 | Flat linear vibration motor |
| CN107204695A (en) * | 2017-05-26 | 2017-09-26 | 维沃移动通信有限公司 | A kind of linear motor and mobile terminal |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445343A (en) * | 2019-07-17 | 2019-11-12 | 瑞声科技（南京）有限公司 | Linear vibration motor |
| US11462984B2 (en) * | 2019-07-17 | 2022-10-04 | AAC Technologies Pte. Ltd. | Linear vibration motor |
| CN111277684A (en) * | 2020-01-21 | 2020-06-12 | 维沃移动通信有限公司 | Electronic device |
| WO2021227678A1 (en) * | 2020-05-15 | 2021-11-18 | 华为技术有限公司 | Linear motor apparatus and terminal device |
| CN114244054A (en) * | 2021-12-23 | 2022-03-25 | 苏州索迩电子技术有限公司 | Linear vibration motor and electronic equipment |
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Application publication date: 20180907 |