CN107046355A - Linear vibrator - Google Patents
Linear vibrator Download PDFInfo
- Publication number
- CN107046355A CN107046355A CN201710222594.4A CN201710222594A CN107046355A CN 107046355 A CN107046355 A CN 107046355A CN 201710222594 A CN201710222594 A CN 201710222594A CN 107046355 A CN107046355 A CN 107046355A
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- CN
- China
- Prior art keywords
- coil
- air core
- permanent magnet
- linear vibrator
- core coil
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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.)
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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
- H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The invention discloses a kind of linear vibrator, its upper end fixed part includes upper casing and the first permanent magnet fixed with upper casing；Lower end fixed part includes lower casing, flexible circuit board and the second permanent magnet fixed with lower casing；Oscillating component includes elastomeric element, air core coil, metallic plate and mass body, and the oscillating component and upper casing are connected to each other by elastomeric element；There is provided inner space for the shell of upper casing and lower casing formation linear vibrator；First permanent magnet and the second permanent magnet are relative with the upper surface and lower surface of air core coil respectively, and identical with the magnetic of air core coil opposing polarities；Mass body, which is arranged in the periphery of air core coil, air core coil, is provided with metallic object, and external power source is input to coil by flexible circuit board, and the metallic object turns into electromagnet during coil electricity.The present invention is used as electromagnet and permanent magnet by the metallic object inserted in air core coil mutually makes oscillating component quickly move up and down generation vibration.
Description
Technical field
The present invention relates to linear vibrator, and in particular to applied to the linear vibrator in handheld communication devices.
Background technology
Recently, the shipment amount of the mobile phone for the giant-screen LCD that consumer uses is facilitated to increase sharply, most of giant-screen LCD mobile phones
Using the pattern of Touch Screen.Vibrating motor be used to produce vibration sense during Touch Screen.Vibrating motor utilizes the principle of electromagnetic force
It is mechanical energy by electromagnetic energy, plays a part of tone-off mode in mobile phone and pass on signal.
In the prior art, rotate the rotating part of unbalance mass, by producing revolving force, so that mechanical oscillation are obtained,
Such as brush (Brush) contact with commutator (Commutator) produces rectified action, so as to obtain returning for mechanical oscillation mode
Turn power.Use commutator（Commutator brush (Brush) series motor), due to brush（Brush）In rotation process warp
Over commutation（Commutator）Mechanical friction is produced during fragment can produce electric spark and foreign matter, and shorten the use longevity of motor
Life.Moreover, reaching that intended vibratory amount needs the regular hour because of revolution inertia after motor conducting, therefore it is difficult to produce screen to touch
Control vibration sense.
In order to overcome the service life of above-mentioned motor and the shortcoming of response characteristic, linear vibrator, which is widely used in realizing, to be touched
Touch the vibrating function in screen.Linear vibrator is without using motor Principle of Rotating, but the electricity produced by coil and permanent magnet
Magnetic force matches with resonant frequency, to built-in spring and hangs over the mass body on spring and sends pulsation, so as to produce vibration.It is right
For the linear vibrator of vertical vibration is designed to, in order to embody a variety of vibration senses and utilize touch sensing, necessarily need
The faster linear vibrator of response speed is wanted, therefore makes that optimal sound can be reached between electromagnetic force, magnetic force and elastic recovering force
Answer the research of the linear vibrator of characteristic extremely urgent.
The content of the invention
The purpose of the present invention is to overcome above-mentioned technological deficiency there is provided a kind of fast response time, linear oscillator simple in construction
Device.
The technical solution adopted by the present invention is as follows：A kind of linear vibrator, including：
Upper end fixation part point, including upper casing and the first permanent magnet with upper casing fixation；
Lower end fixed part includes lower casing, flexible circuit board and the second permanent magnet fixed with lower casing；
Oscillating component, including elastomeric element, air core coil, metallic plate and mass body, elastomeric element by the oscillating component with it is upper
Casing is connected to each other；
Wherein, there is provided inner space for the shell of upper casing and lower casing formation linear vibrator；First permanent magnet and second is forever
Long magnet is relative with the upper surface and lower surface of air core coil respectively and identical with the magnetic of air core coil opposing polarities；Quality
Body, which is arranged in the periphery of air core coil, air core coil, is provided with metallic object, and external power source is input to line by flexible circuit board
Circle, the metallic object turns into electromagnet during coil electricity.
As a kind of preferred embodiment, the metallic object is retort stand, and the center of air core coil is cylindrical shape, and iron core bracket is inserted
Enter in air core coil, coil inner ring is fixed with iron core bracket outer ring.
Coil is fixed with iron core bracket with anaerobic thermmohardening adhesive.
The height of iron core bracket >=air core coil height.
The metallic plate is made up of circular planar portions and cylindric lug boss, the upper surface of circular planar portions and following table
Face is fixedly connected with elastomeric element and mass body respectively, between cylindric lug boss insertion mass body inner ring and coil outer diameter, circle
The inner ring of tubular lug boss and outer ring are fixed with coil outer ring and mass body inner ring respectively.Circular plane radially inward is prolonged
Stretch, form the chuck for preventing that coil from departing from.
As another preferred embodiment, the metallic plate has a circular planar portions and a cylindric lug boss, bullet
Property part be fixed on the upper surfaces of circular planar portions, the inner ring of cylindric lug boss insertion coil is used as metallic object.The gold
Category plate is made up of ferrous material.
Elastomeric element is helical spring or card spring.
Insertion metallic object, the top and bottom of metallic object in the middle of the air core coil of the composition oscillating component of linear vibrator of the present invention
It is relative with the first permanent magnet and the second permanent magnet respectively, and it is identical to the magnetic of magnetic pole, to coil incoming transport it is electric when
The metallic object being inserted in air core coil plays a part of electromagnet, and repulsion, different magnetic poles are produced with permanent magnet same pole
Gravitation is produced, vibration section is quickly moved up and down, vibration is produced, the linear vibrator fast response time can meet hand-held logical
Interrogate demand of the equipment to screen touch-control vibration sense.
Brief description of the drawings
Fig. 1 is the diagrammatic cross-section of the linear vibration device of the embodiment of the present invention 1.
Fig. 2 is the decomposing schematic representation of the linear vibration device of the embodiment of the present invention 1.
Fig. 3 is the fundamental diagram of the linear vibration device of the embodiment of the present invention 1.
Fig. 4 is the profile schematic diagram of the linear vibration device of the embodiment of the present invention 2.
Fig. 5 is the decomposing schematic representation of the linear vibration device of embodiments of the invention 2.
Symbol description：
100, 300 :Linear vibrator；110, 310 :Lower end fixed part；120, 320 :Oscillating component；130,
330 :Upper end fixation part point；
111, 311 :Second permanent magnet；131, 331 :First permanent magnet；132, 332 :Upper casing；132a is received
Receive space；126, 326 :Elastomeric element；125, 325 :Metallic plate；125a, 325a:Circular planar portions；125b,
325b:Cylindric lug boss；125c:Chuck；124, 324 :Coil；
123 :Iron core bracket；113, 313 :Flexible circuit board；112, 312 :Lower casing；112a:Accommodation space,
112b:Portion of terminal.
Embodiment
Embodiments of the invention are described in detail with reference to the accompanying drawings.It is to be noted, however, that the spirit of the present invention is not limited
In embodiment set forth herein, understand that those skilled in the art of the present invention can be by increase, modification and removal identical essence
Part in god easily realizes the invention of deterioration or including other embodiment within the spirit of the invention, and these are solved
It is interpreted as including within the spirit of the invention.In the accompanying drawings, identical reference numeral is used to mark same or similar part, uses
" first ", " second ", " upper end ", " lower end " and similar term are used to make a distinction with miscellaneous part, but these parts
Structure should not be construed as limited by these terms.
Embodiment 1
Reference picture 1, Fig. 2, linear vibrator of the invention are made up of following part：Protect the inner member of linear vibrator and carry
For the upper casing 132 in space；Upper casing 132 is provided with the first permanent magnet 131, the first permanent magnet 131 and oscillating component 120
Electromagnet produce electromagnetic force interaction；The permanent magnet 131 of upper casing 132 and first constitutes upper end fixation part 130, upper end
Fixed part 130 is connected with the elastomeric element 126 of oscillating component 120；Oscillating component 120 include iron core bracket 123, coil 124,
Mass body 122, metallic plate 125, elastomeric element 126, the external diameter of iron core bracket 123 are surrounded by coil 124, and elastomeric element 126 passes through
Sheet metal 125 is connected with oscillating component 120；Match with upper casing 132 and protect the lower casing 112 of internal part；Lower casing 112
The second permanent magnet 111 that the electromagnet of middle setting and oscillating component 120 interacts, lower casing 112, the second permanent magnet
111 and flexible circuit board 113 constitute lower end fixed part 110, lower end fixed part 110 is for external power source and coil
124 connected offer circulation passage.
The detailed construction of oscillating component 120 assigns iron core bracket for the internal diameter the inside of hollow coil 124 in the present embodiment
123, this iron core bracket 123 plays a part of electromagnet when hollow coil 124 is turned on, and iron core bracket 123 is by cylindrical shape irony material
Material is made, in order to improve protecting against shock efficiency, it is proposed that use anaerobic thermmohardening adhesive.In order to realize electromagnet maximum intensity
Change, height >=air core coil height of iron core bracket.
Metallic plate 125 is made up of circular planar portions 125a and cylindrical shape lug boss 125b in the present embodiment, and annular shape is flat
Facial 125a upper and lower surface is fixedly connected with elastomeric element 126 and mass body 122 respectively, cylindric lug boss 125b
Insert between the inner ring of mass body 122 and the outer ring of coil 124, cylindric lug boss 125b inner ring and outer ring respectively with coil 124
Outer ring and the inner ring of mass body 122 are fixed, and circular planar portions 125a radially inwards extend the chuck to be formed and prevent that coil from departing from
125c.The metallic plate 125 of the present embodiment can be between intensifier coil 124 and mass body 122, and elastomeric element 126 and vibration
The reliability connected between part 120.
During making, first iron core bracket 123, the internal diameter and coil of mass body 122 will be assigned inside the internal diameter of hollow coil 124
Fixed after inserting metallic plate 125 between 124 external diameters with adhesive, the cylindric lug boss 125b of metallic plate 125 is used to assign line
Circle 124, the cylindric lug boss 125b can precisely determine the assembled height of coil 124, therefore can ensure after finished goods assembling
The reaction distance of permanent magnet 131,111 of the iron core bracket 123 at the center of coil 124 with being installed on fixed part is homogeneous, so that really
Identical characteristic is maintained when protecting batch production.The metallic plate 125 of the reverse side of coil 124 is that annular shape planar portions 125a will keep balance,
To be connected with elastomeric element 126.The oscillating component 120 being assembled as above and the upper casing that inner space is provided
132 are connected by elastomeric element 126.Connection procedure is as follows：First by the metallic plate 125 of fixed coil 124 and mass body 122
With the laser welding of elastomeric element 126, make the oscillating component 120 containing elastomeric element 126, then upper end fixation part points 130 with
Oscillating component 120 is connected, and upper end fixation part point 130 contains the first permanent magnet 131 and upper casing 132.Upper end fixation part point
130 the first permanent magnet is assigned in the inner side of upper casing 132, is made to prevent break-off in the inner side of upper casing 132
Accommodation space 132a, the first permanent magnet 131 is fixed after being inserted into this accommodation space 132a with adhesive.In order to connect vibration section
Divide laser after connecting on the upside of 120 and upper end fixation part 130, the elastomeric element 126 of oscillating component 120 with the inner side of upper casing 132
The mode of welding is fixed, the upper end fixation part containing oscillating component 120 that thus completes point 130.
By using flexible circuit board 113 to the coil 124 of the oscillating component 120 positioned at the inner side of upper end fixation part point 130
Foreign current is accessed, a part of surface of the circumferential circuit board 113 being involved in and mass body 122 is fixed with adhesive, then will
The line all the time of coil 124 is placed in the scolding tin position of flexible circuit board 113, then scolding tin connection, in order to reduce noise and avoid length
Short circuit occurs for time action, it is proposed that it is flexible circuit board 113 thin below 0.1mm to enable thickness.
As above the upper end fixation part containing oscillating component 120 made point 130 needs to be connected with lower end fixed part 110
Connect.Lower end fixed part 110 is such as upper end fixation part point 130, in the accommodation space 112a of the medial center formation of lower casing 112
The inside is fixed after assigning the second permanent magnet 111 with adhesive, and the portion of terminal for drawing flexible circuit board is made on lower casing 112
112b, flexible circuit board 113 is fixed on the mass body 122 of oscillating component 120, and is connected with the scolding tin of coil 124.
Lower casing 112 and upper casing 132 are in order to protect internal part generally to be rushed using the metal material of SPC or SUS materials
It is pressed into, the lower end fixed part 110 as above made divides after 130 phase riveteds with the upper end fixation part containing oscillating component 120, soft
Property circuit board 113 will be exposed, by exposed flexible circuit board 113 is with adhesive or tape-stripping and is fixed on lower casing 112
Portion of terminal 112b on.
Linear vibrator operation principle of the present invention is as shown in figure 3, assign into the first permanent magnet of upper end fixation part 130
131 and the second permanent magnet 111 of lower end fixed part 110, towards direction of principal axis above and below magnetize, and with being protected in face of the part of coil 124
Hold same pole.（a）In illustrate in face of the magnetic pole of the first permanent magnet 131 of coil 124, the second permanent magnet 111 to be N
Pole, during 124 no current of coil, elastomeric element 126 supports the situation of oscillating component 120；（b）In illustrate to have just in coil 124
During to electric current, the iron core bracket 123 in the middle of coil 124 is transformed into electromagnet, and upside is changed into N poles, and downside is changed into S poles, now electric
Produce repulsion between the N poles of magnet and the N poles of the first permanent magnet 131 and the second permanent magnet 111, the S poles of electromagnet and the
The N poles of one permanent magnet 131 and the second permanent magnet 111 produce gravitation, so that oscillating component 120 can be moved down；（c）In show
Anticipate in coil 124 when having reverse current, the iron core bracket 123 in the middle of coil 124 is transformed into electromagnet, and upside is changed into S poles, under
Side is changed into N poles, now produces repulsion between the N poles of electromagnet and the N poles of the first permanent magnet 131 and the second permanent magnet 111,
The S poles of electromagnet and the N poles of the first permanent magnet 131 and the second permanent magnet 111 produce gravitation, so that the meeting of oscillating component 120
Move up.Same principle causes oscillating component 120 to move up and down by alternating current, with being fixed on oscillating component 120
Vibration will be produced under the collective effect of mass body 122 of the high weight of high specific gravity.And the frequency of alternating current and elastomeric element 126
When resonant frequency matches, the trend of elastomeric element 126 can be improved rapidly, the vibration of maximum can be produced.It is installed on vibration section
The mode that mass body 122 on points 120 adds high temperature sintering after a small amount of nickel with high-gravity tungsten powdered steel is made, addition nickel into
Branch is improved corrosion resistance and keeps good flatness, contributes to the welding with metallic plate 125, strong to improve bonding
Degree.
As described above, invention applies the electromagnet principle of the iron core bracket 123 at the center of coil 124, iron core bracket 123
The first permanent magnet 131 of same pole, the second permanent magnet 111 are assigned in opposite up and down, while with gravitation and repulsion, so that
The vibration section containing mass body 122 is moved or is stopped more quickly, therefore experienced faster during the screen such as touch-control smart mobile phone
Answer speed.
Embodiment 2
In the present embodiment, the metallic plate 325 for connecting elastomeric element 326 and mass body can be applied when support, by iron material matter
Steel plate metallic plate 325 is made of pressing equipment, the metallic plate 325 has an annular shape planar portions 325a and a cylindrical shape convex
Portion 325b is played, elastomeric element 326 is fixed on circular planar portions 325a upper surface, and cylindric lug boss 325b inserts coil
324 inner ring is used as metallic object.Inside cylindric lug boss 325b insertions hollow coil 324, without inserting iron core bracket 123
Effect same can be played.In order to realize electromagnet maximum intensity, cylindric lug boss 325b height >=air core coil 324 is high
Degree.Coil 324 produces the electromagnetic force in up-down vibration direction, and the cylindric lug boss 325b of metallic plate 325 is by this electromagnetic force towards one
Individual direction makes power, and the flowing with electric current and permanent magnet react generation gravitation and repulsion, contains mass body during this
322 vibration section 320 moves up and down, and can obtain the vibration of reaction speed soon.The annular shape of metallic plate 325 is put down in the present embodiment
Facial 325a upper surface is fixed with Flexible Connector 326, the upper surface of lower surface and part mass body 322 and coil 324
Fixed, the outer ring of coil 325 and the inner ring of mass body 322 are fixed.Its upper end fixed part 330 include upper casing 332 and with
Upper casing 332 fix the first permanent magnet 331, lower end fixed part 310 include lower casing 312, flexible circuit board 313 and
The second permanent magnet 311 fixed with lower casing 312, its annexation etc. is same as Example 1, does not repeat herein.
Claims (10)
1. a kind of linear vibrator, including：
Upper end fixation part point, including upper casing and the first permanent magnet with upper casing fixation；
Lower end fixed part includes lower casing, flexible circuit board and the second permanent magnet fixed with lower casing；
Oscillating component, including elastomeric element, air core coil, metallic plate and mass body, elastomeric element is by the vibration section and upper machine
Shell is connected to each other；
Wherein, there is provided inner space for the shell of upper casing and lower casing formation linear vibrator；First permanent magnet and second is forever
Long magnet is relative with the upper surface and lower surface of air core coil respectively and identical with the magnetic of air core coil opposing polarities；Quality
Body, which is arranged in the periphery of air core coil, air core coil, is provided with metallic object, and external power source is input to line by flexible circuit board
Circle, the metallic object turns into electromagnet during coil electricity.
2. core vibrator according to claim 1, it is characterized in that the metallic object is retort stand, the center of air core coil
For cylindrical shape, iron core bracket is inserted in air core coil, and coil inner ring is fixed with iron core bracket outer ring.
3. linear vibrator according to claim 2, it is characterized in that coil is gluing with anaerobic thermmohardening with iron core bracket
Agent is fixed.
4. linear vibrator according to claim 2, it is characterized in that the metallic plate is by circular planar portions and cylindrical shape
Lug boss is constituted, and the upper and lower surface of circular planar portions is fixedly connected with elastomeric element and mass body respectively, cylindric
Lug boss is inserted between mass body inner ring and coil outer diameter, the inner ring of cylindric lug boss and outer ring respectively with coil outer ring and matter
Amount in vivo fix by circle.
5. linear vibrator according to claim 4, it is characterized in that circular plane radially inward extension, formation is prevented
The chuck that coil departs from.
6. linear vibrator according to claim 1, it is characterized in that the metallic plate has a circular planar portions and one
Individual cylindric lug boss, elastomeric element is fixed on the upper surface of circular planar portions, and cylindric lug boss inserts the inner ring of coil
It is used as metallic object.
7. linear vibrator according to claim 6, it is characterized in that the metallic plate is made up of ferrous material.
8. the linear vibrator according to claim 2 or 6, it is characterized in that the height of height >=air core coil of iron core bracket
Degree；The height of height >=air core coil of cylindric lug boss.
9. the linear vibrator according to claim any one of 1-7, it is characterized in that mass body high-gravity tungsten powdered steel adds
Plus the mode of high temperature sintering is made after a small amount of nickel.
10. the linear vibrator according to claim any one of 1-7, it is characterized in that the elastomeric element be helical spring or
Card spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222594.4A CN107046355A (en) | 2017-04-07 | 2017-04-07 | Linear vibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222594.4A CN107046355A (en) | 2017-04-07 | 2017-04-07 | Linear vibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107046355A true CN107046355A (en) | 2017-08-15 |
Family
ID=59544438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710222594.4A Pending CN107046355A (en) | 2017-04-07 | 2017-04-07 | Linear vibrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107046355A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110166904A (en) * | 2019-06-12 | 2019-08-23 | 瑞声科技（南京）有限公司 | Screen sounding device |
| CN110719009A (en) * | 2018-07-11 | 2020-01-21 | Mplus株式会社 | Elastic member structure and linear vibration motor using same |
| WO2021035829A1 (en) * | 2019-08-28 | 2021-03-04 | 领先科技(东台)有限公司 | Linear vibration motor having coil embedded with iron core |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447372A (en) * | 2010-10-04 | 2012-05-09 | 三星电机株式会社 | Linear vibrator |
| CN103855904A (en) * | 2012-12-06 | 2014-06-11 | 三星电机株式会社 | Linear vibrator |
| CN104617733A (en) * | 2013-11-05 | 2015-05-13 | 三星电机株式会社 | Linear vibrator |
| CN206628967U (en) * | 2017-04-07 | 2017-11-10 | 威海硕科微电机有限公司 | Linear vibrator |
-
2017
- 2017-04-07 CN CN201710222594.4A patent/CN107046355A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447372A (en) * | 2010-10-04 | 2012-05-09 | 三星电机株式会社 | Linear vibrator |
| CN103855904A (en) * | 2012-12-06 | 2014-06-11 | 三星电机株式会社 | Linear vibrator |
| CN104617733A (en) * | 2013-11-05 | 2015-05-13 | 三星电机株式会社 | Linear vibrator |
| CN206628967U (en) * | 2017-04-07 | 2017-11-10 | 威海硕科微电机有限公司 | Linear vibrator |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110719009A (en) * | 2018-07-11 | 2020-01-21 | Mplus株式会社 | Elastic member structure and linear vibration motor using same |
| CN110719009B (en) * | 2018-07-11 | 2021-09-28 | Mplus株式会社 | Elastic member structure and linear vibration motor using same |
| CN110166904A (en) * | 2019-06-12 | 2019-08-23 | 瑞声科技（南京）有限公司 | Screen sounding device |
| CN110166904B (en) * | 2019-06-12 | 2020-08-18 | 瑞声科技（南京）有限公司 | Screen sounding device |
| WO2021035829A1 (en) * | 2019-08-28 | 2021-03-04 | 领先科技(东台)有限公司 | Linear vibration motor having coil embedded with iron core |
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