CN109889008A - A kind of damping structure and its damping control mode of linear vibrator - Google Patents
A kind of damping structure and its damping control mode of linear vibrator Download PDFInfo
- Publication number
- CN109889008A CN109889008A CN201910198040.4A CN201910198040A CN109889008A CN 109889008 A CN109889008 A CN 109889008A CN 201910198040 A CN201910198040 A CN 201910198040A CN 109889008 A CN109889008 A CN 109889008A
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- oscillating component
- induction part
- driving coil
- damping structure
- linear vibrator
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- 238000013016 damping Methods 0.000 title claims abstract description 47
- 230000006698 induction Effects 0.000 claims abstract description 60
- 238000005452 bending Methods 0.000 claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
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- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000005672 electromagnetic field Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000006467 substitution reaction Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005381 potential energy Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000036982 action potential Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- -1 induction coil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The invention discloses a kind of damping structure of linear vibrator and its damping control modes, including drive part, oscillating component and induction part, drive part includes driving coil, oscillating component includes clump weight and permanent magnet, the inner space of pre-set dimension is equipped among clump weight, permanent magnet is placed in inner space, induction part and driving coil are separately positioned on the two sides of oscillating component, or, the side of oscillating component is arranged in driving coil, the two sides of oscillating component are provided with induction part, driving coil indirect current；The present invention has to be damped with electromagnetic damping substitution solid-state machinery, and properties of product consistency is good, the strong advantage of stability under high/low temperature condition.
Description
Technical field
The present invention relates to mobile electronic device field, it is more particularly to damping structure and its damping of a kind of linear vibrator
Control mode.
Background technique
Due to the intrinsic simple harmonic oscillation characteristic of linear vibrator, if without additionally damping, the remained shock of product can be dragged
Must be long, dwell time can be very long, causes in practical applications by various limitations, the damping knot of existing linear vibrator
Structure is almost solid-state machinery damping (such as magnetic liquid, silica gel or foam), and it is poor that solid-state damps comparison of coherence, and temperature characterisitic is not
Ideal causes properties of product consistency poor, big in the following performance variation of high temperature (25 DEG C) the above low temperature (- 20 DEG C).
Summary of the invention
Technical problem to be solved by the present invention lies in the damping structure temperature characterisitics of the linear vibrator of the prior art not
Ideal, the problem of properties of product consistency difference.
The present invention is to solve a kind of above-mentioned technical problem: damping structure of linear vibrator by the following technical programs,
Including drive part, oscillating component and induction part, the drive part includes driving coil, and the oscillating component includes matching
Pouring weight and permanent magnet, the clump weight centre are equipped with the inner space of pre-set dimension, and the permanent magnet is placed in the inner space,
The induction part and the driving coil are separately positioned on the two sides of the oscillating component, alternatively, the driving coil is arranged
In the side of oscillating component, the two sides of oscillating component are provided with the induction part, the driving coil indirect current.Driving
After coil indirect current, induction part generates induced current and induced electromotive force, when stopping powering to driving coil, induction
The magnetic field force that induced current on part generates always hinders the movement of oscillating component, effective to hinder the original fortune of oscillating component
Action potential, to prevent the oscillating component remained shock of linear vibrator from dragging very long.
Preferably, the induction part material is metal.
Preferably, the induction part short circuit connection.
Preferably, the induction part is induction coil, annular any one of copper sheet or copper ring.
Preferably, the drive part further includes lower cover and flexible circuit board, and the flexible circuit board is solid by double-sided adhesive
It is scheduled on the top of the lower cover.
Preferably, the damping structure further includes casing, and the induction part is fixed by glue and casing, the induction
Part is located at the lower central position of the casing.
Preferably, the edge of the casing is fixedly connected with the lower cover edge by Laser Welding, the casing with it is described
Cavity is formed between lower cover, the drive part, oscillating component and induction part are respectively positioned in the cavity.
Preferably, there are two preset pad and two contact pads, two preset pads on the flexible circuit board
It is fixedly connected by welding respectively with the both ends lead of the driving coil, described two preset pads connect with described two
It is connected between touching pad by copper cabling, two contact pads are connect with external power supply, are powered for driving coil.
Preferably, the oscillating component further include the magnetic conductive board matched with the size and shape of the inner space and
It is respectively welded at two spring assemblies of the clump weight left and right side, the driving coil is located at the clump weight and described
The lower section of permanent magnet, and have gap between the lower surface of the permanent magnet, the magnetic conductive board is fixed on the top of clump weight simultaneously
And the top of the inner space is blocked, and permanent magnet described in support, the following table of the upper surface of the permanent magnet and the magnetic conductive board
The connection of face gluing, has gap between the magnetic conductive board and the induction part.
Preferably, each spring assembly includes bending spring leaf, the first block and the second block, the bending spring
Piece is C-shaped, and first block is placed between the bending spring leaf and the clump weight and is welded on bending spring leaf, institute
The second block is stated to be placed between the bending spring leaf and the casing and be welded on bending spring leaf.
The present invention also provides a kind of damping control modes of the damping structure of linear vibrator, comprising: gives the driving line
The electric current of logical alternation is enclosed, the driving coil generates the electromagnetic field of variation, and the permanent magnet is by magnetic field force, in the work of magnetic field force
Under, the oscillating component is driven to do simple harmonic motion in the horizontal direction, when oscillating component is when doing simple harmonic motion, on oscillating component
Permanent magnet the magnetic line of force can cut the short circuit being mounted on casing induction part magnetic induction line, at this time in induction part will produce
Raw induced current and induced electromotive force, when stopping powering to driving coil, the magnetic field of the induced current generation on induction part
Power always hinders the movement of oscillating component, effective to hinder the original movement potential energy of oscillating component.
The present invention has the advantage that compared with prior art
1) driving coil and induction part is used to be implemented in combination with the effect of electromagnetic damping to substitute solid-state machinery damping, induction
Part is the metallic conductors materials such as induction coil, copper sheet or copper ring, and performance is stablized under high/low temperature condition, solves properties of product
Consistency and under high/low temperature condition stability problem.
2) present invention substitutes solid-state machinery damping, at low cost, strong operability by the way of electromagnetic damping.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, attached drawing needed in invention description will be made below
Simply introduce, it should be apparent that, drawings in the following description are only some embodiments of the invention, common for this field
For technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is decomposed completely under a kind of a kind of angle of the damping structure of linear vibrator disclosed in the embodiment of the present invention
Explosive view；
Fig. 2 be under a kind of another angle of the damping structure of linear vibrator disclosed in the embodiment of the present invention not exclusively
Decomposition explosion figure；
Fig. 3 is a kind of schematic diagram of the spring assembly of the damping structure of linear vibrator disclosed in the embodiment of the present invention
Fig. 4 is a kind of schematic cross sectional views of the damping structure of linear vibrator disclosed in the embodiment of the present invention；
Corresponding component title represented by number in figure:
1, drive part 2, oscillating component 3, induction part
4, casing 101, lower cover 102, flexible circuit board
103, driving coil 201, clump weight 202, permanent magnet
203, magnetic conductive board 204, spring assembly 401, notch
1011, extension 2041, bending spring leaf 2042, the first block
2043, the second block 2011, inner space
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
As shown in Figure 1, Figure 2 and Figure 4, a kind of damping structure of linear vibrator, including drive part 1, oscillating component 2 with
And induction part 3.
The drive part 1 includes lower cover 101, flexible circuit board 102 and driving coil 103, the flexible circuit board
102 are fixed on the top of the lower cover 101 by double-sided adhesive, and the driving coil 103 is fixed on the flexible electrical by glue
The top of road plate 102.Specifically, extension 1011 is arranged in the rear side of the lower cover 101, have two on the flexible circuit board 102
A preset pad (not shown) and two contact pad (not shown), two contact pads are being located at the extension 1011 just
Top, both ends lead of two preset pads respectively with the driving coil 103 is fixedly connected by welding, described two
Pass through copper cabling (figure is not marked) connection, two contact pads and external power supply between preset pad and described two contact pads
Connection is powered for driving coil 103,103 indirect current of driving coil.
The oscillating component 2 includes clump weight 201, permanent magnet 202, magnetic conductive board 203 and spring assembly 204, described to match
The inner space 2011 of pre-set dimension is equipped among pouring weight 201, the permanent magnet 202 is placed in the inner space 2011, this hair
Clump weight 201 described in bright embodiment is rectangular block, and it is rectangle that inner space 2011 is identical with 202 shape of permanent magnet, internal
Space 2011 is slightly larger than the permanent magnet 202, and unlimited setting shape, is only to provide a kind of enforceable embodiment in the present invention,
Other enforceable shapes are also within the scope of the present invention.The driving coil 103 is located at the clump weight 201 and described
The lower section of permanent magnet 202, and have gap with the lower surface of the permanent magnet 202, during preventing 2 fall-down test of oscillating component etc.
Contact the driving coil 103；The magnetic conductive board 203 is matched with the size and shape of the inner space 2011, described to lead
Magnetic sheet 203 is fixed on the top of clump weight 201, the upper surface of the permanent magnet 202 and the magnetic conductive board 203 by laser welding
Lower surface be fixedly connected by glue, block the top of the inner space 2011, permanent magnet 202 described in support；The bullet
There are two spring components 204, and two spring assemblies 204 are respectively welded at 201 left and right side of clump weight.
Refering to Fig. 3, each spring assembly 204 includes bending spring leaf 2041, the first block 2042 and the second block
2043, the bending spring leaf 2041 is C-shaped.First block 2042 is placed in the bending spring leaf 2041 and the counterweight
Between block 201 and it is welded to the c-shaped opening side of bending spring leaf 2041, second block 2043 is placed in the bending spring
Between piece 2041 and the casing 4 and be welded to the c-shaped opening other side of bending spring leaf 2041, first block 2042 with
The c-shaped opening side of bending spring leaf 2041 is integrally welded on casing 4, second block 2043 and bending spring leaf 2041
The c-shaped opening other side be integrally welded on clump weight 201.
The induction part 3 is induction coil, annular any one of copper sheet or copper ring, but induction part of the invention
3 are not only confined to cited embodiment, and material is metallic conductor, and the structure of internal short-circuit can be used as of the invention
Induction part 3.The induction component 3 is shorted using the induction coil, the induction coil in embodiments of the present invention,
Specifically, the disengaging lead of the induction coil is welded on casing.Distinguish with the driving coil 103 induction part 3
The two sides of the oscillating component 2 are set, alternatively, the side of oscillating component 2, oscillating component 2 is arranged in the driving coil 103
Two sides be provided with the induction part 3, it should be noted that not limit induction part 3 number, induction part 3 can
Think it is multiple, in the settable induction part 3 in the two sides of oscillating component 2, i.e., on casing 4 be arranged induction part 3 under the premise of,
It is also provided with induction part 3, on lower cover 101 to enhance damping；It, can also be in casing in order to further enhance damping
4 and lower cover 101 on be respectively provided with multiple induction parts 3；Or the area by increasing induction part 3 and thickness are to enhance damping
Effect.Provided in an embodiment of the present invention is the centre for the lower section that the induction part 3 is fixedly connected on the casing 4 by glue
Position, and have gap between the induction part 3 and the magnetic conductive board 203.
The casing 4 is in embodiments of the present invention rectangular box shape body, but is not limited to rectangular box shape body, as long as can
Realize that the effect of loaded objects is within the scope of the invention.The shape phase of the shape of the casing 4 and the lower cover 101
Together, and the position of extension 1011 described in 4 left side face of casing is equipped with and the matched notch 401 of extension 1011, the stretching
It notch 401 described in 1011 face of portion and is extended out to the outside direction of casing 4, the Contact welding on the extension 1011
Disk also extends out therewith, is placed in the outside of casing 4, and the edge of the casing 4 and 101 edge of lower cover pass through laser solid welding
Fixed connection, forms cavity, the drive part 1, oscillating component 2 and induction part between the casing 4 and the lower cover 101
3 are respectively positioned in the cavity.
The present invention also provides a kind of damping control modes of the damping structure of linear vibrator, comprising: gives the driving line
Enclose the electric current of 103 logical alternations, the driving coil 103 generates the electromagnetic field of variation, the permanent magnet 202 by magnetic field force,
Under the action of magnetic field force, the oscillating component 2 is driven to do simple harmonic motion in the horizontal direction, when oscillating component 2 is doing simple harmonic motion
When, the magnetic line of force of the permanent magnet 202 on oscillating component 2 can cut the magnetic strength of the induction part 3 for the short circuit being mounted on casing 4
Line will generate induced current and induced electromotive force, when stopping powering to driving coil 103, induction part at this time in induction part 3
The magnetic field force that the induced current divided on 3 generates always hinders the movement of oscillating component 2, effective to hinder oscillating component 2 original
Move potential energy.
By above technical scheme, a kind of damping structure of linear vibrator provided by the present invention and its damping control side
Formula is damped using electromagnetic damping substitution solid-state machinery, and performance is stablized under high/low temperature condition, solves properties of product consistency and in height
The problem of stability under cryogenic conditions effectively hinders oscillating component when the driving coil of linear vibrator stops power supply
Movement potential energy, effectively reduce the remained shock of oscillating component, reduce the dwell time of oscillating component.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (11)
1. a kind of damping structure of linear vibrator, which is characterized in that including drive part, oscillating component and induction part,
The drive part includes driving coil, and the oscillating component includes clump weight and permanent magnet, is equipped among the clump weight pre-
If the inner space of size, the permanent magnet is placed in the inner space, and the induction part is set respectively with the driving coil
It sets in the two sides of the oscillating component, alternatively, the side of oscillating component is arranged in the driving coil, the two sides of oscillating component are equal
It is provided with the induction part, the driving coil indirect current.
2. a kind of damping structure of linear vibrator according to claim 1, which is characterized in that the induction part material
For metal.
3. a kind of damping structure of linear vibrator according to claim 1, which is characterized in that the induction part short circuit
Connection.
4. a kind of damping structure of linear vibrator according to claim 2, which is characterized in that the induction part is sense
Answer coil, annular any one of copper sheet or copper ring.
5. a kind of damping structure of linear vibrator according to claim 1, which is characterized in that the drive part also wraps
Lower cover and flexible circuit board are included, the flexible circuit board is fixed on the top of the lower cover by double-sided adhesive.
6. a kind of damping structure of linear vibrator according to claim 5, which is characterized in that the damping structure also wraps
Casing is included, the induction part is fixed by glue and casing, and the induction part is located at the lower central position of the casing.
7. a kind of damping structure of linear vibrator according to claim 6, which is characterized in that the edge of the casing with
The lower cover edge is fixedly connected by Laser Welding, and cavity, the drive part, vibration are formed between the casing and the lower cover
Dynamic part and induction part are respectively positioned in the cavity.
8. a kind of damping structure of linear vibrator according to claim 5, which is characterized in that on the flexible circuit board
There are two preset pad and two contact pads, two preset pads are logical with the both ends lead of the driving coil respectively
It crosses and connection is welded and fixed, connected between described two preset pads and described two contact pads by copper cabling, two connect
Touching pad is connect with external power supply, is powered for driving coil.
9. a kind of damping structure of linear vibrator according to claim 6, which is characterized in that the oscillating component also wraps
It includes the magnetic conductive board matched with the size and shape of the inner space and is respectively welded at the clump weight left and right side
Two spring assemblies, the driving coil is located at the lower section of the clump weight and the permanent magnet, and with the permanent magnet
There is gap between lower surface, the magnetic conductive board is fixed on the top of clump weight and blocks the top of the inner space, support
The permanent magnet, the upper surface of the permanent magnet are connect with the lower surface gluing of the magnetic conductive board, the magnetic conductive board and the sense
Answering has gap between part.
10. a kind of damping structure of linear vibrator according to claim 9, which is characterized in that each groups of springs
Part includes bending spring leaf, the first block and the second block, and the bending spring leaf is C-shaped, and first block is placed in described
It between bending spring leaf and the clump weight and is welded on bending spring leaf, second block is placed in the bending spring leaf
Between the casing and it is welded on bending spring leaf.
11. according to a kind of described in any item damping control modes of the damping structure of linear vibrator of right 1-10, feature
It is, comprising: lead to the electric current of alternation to the driving coil, the driving coil generates the electromagnetic field of variation, the permanent magnet
By magnetic field force, under the action of a magnetic force, the oscillating component is driven to do simple harmonic motion in the horizontal direction, when oscillating component exists
When doing simple harmonic motion, the magnetic line of force of the permanent magnet on oscillating component can cut the magnetic of the induction part for the short circuit being mounted on casing
Feel line, induced current and induced electromotive force, when stopping powering to driving coil, induction part will be generated in induction part at this time
On the magnetic field force that generates of induced current always hinder the movement of oscillating component, it is effective to hinder the original kinetic-potential of oscillating component
Energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910198040.4A CN109889008A (en) | 2019-03-15 | 2019-03-15 | A kind of damping structure and its damping control mode of linear vibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910198040.4A CN109889008A (en) | 2019-03-15 | 2019-03-15 | A kind of damping structure and its damping control mode of linear vibrator |
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| Publication Number | Publication Date |
|---|---|
| CN109889008A true CN109889008A (en) | 2019-06-14 |
Family
ID=66932484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910198040.4A Pending CN109889008A (en) | 2019-03-15 | 2019-03-15 | A kind of damping structure and its damping control mode of linear vibrator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021128788A1 (en) * | 2019-12-25 | 2021-07-01 | 歌尔股份有限公司 | Vibration device and electronic product |
| WO2021128176A1 (en) * | 2019-12-26 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Linear motor |
| WO2021127908A1 (en) * | 2019-12-23 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Linear vibration motor |
| CN113765326A (en) * | 2021-10-11 | 2021-12-07 | 维沃移动通信有限公司 | Linear motor, method and device for detecting oscillation starting direction of linear motor and electronic equipment |
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