CN201156697Y - Spring tab pair for ultra-small type voice coil motor - Google Patents
Spring tab pair for ultra-small type voice coil motor Download PDFInfo
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- CN201156697Y CN201156697Y CNU2008200919590U CN200820091959U CN201156697Y CN 201156697 Y CN201156697 Y CN 201156697Y CN U2008200919590 U CNU2008200919590 U CN U2008200919590U CN 200820091959 U CN200820091959 U CN 200820091959U CN 201156697 Y CN201156697 Y CN 201156697Y
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- spring
- spring leaf
- voice coil
- coil motor
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Abstract
The utility model relates to a spring leaf pair used in a microminiaturization voice coil motor, which comprises a front spring leaf and a back spring leaf; the front spring leaf and the back spring leaf both comprise a substrate, the center of which is provided with a central hole; an inner circle motion ring and an outer circle fixing ring are coaxially arranged from the interior to the exterior along the radial direction of the periphery of the central hole; a clamping structure is arranged on the inner circle motion ring; detour spring wires are arranged on the outer circle fixing ring; the spring leaf pair is characterized in that the back spring leaf is formed by two half spring leaves which are divided into a left and a right part; and he back spring leaf is spaced by a slicing isolating slot; all half spring leaves are respectively connected with a positive input terminal and a negative input terminal. The substrates of the front spring leaf and the back spring leaf are a rectangle plat structure; the outer circle fixing ring are provided with at least four pieces of staggered detour spring wires; the shapes of the detour spring wires are the same; besides, the detour spring wires are uniformly and symmetrically arranged between the inner circle motion ring and the outer circle fixing ring. The spring leaf pair can be used to improve the response speed of a motion loading seat, reduce the quantities of the parts and the processing working procedures of the voice coil motor, save the processing material, reduce the processing cost and can also reduce the shape size of the voice coil motor.
Description
[technical field]
The utility model relates to the voice coil motor field, particularly is used for the automatic focusing shooting module of portable electric appts such as mobile phone and notebook, bears the spring leaf pair of the microminiaturizationvoice voice coil motor of automatic focus function.
[background technology]
Voice coil motor (Voice Coil Motor VCM) is a kind of more special straight-line displacement drive motors, its have simple in structure, volume is little, low energy consumption, noiselessness, high acceleration and response speed is fast, displacement is accurate and advantage such as cheap.Voice coil motor is suitable as the short distance linear displacement power unit in the portable type electronic product very much.The automatic focusing camera module that is used for mobile phone and notebook computer at present generally adopts the power unit of voice coil motor as its Optical devices displacement.Yet the driving of voice coil motor/reduction pace of change is slower for the pace of change that portable electronic products is counted Millisecond easily.For improving above-mentioned condition, generally can in the middle of voice coil motor, add at least one spring leaf, even an auxiliary spring sheet quickens the pace of change that drives/reduce.
Fig. 1 has showed the decomposing schematic representation of the voice coil motor (VCM) of the automatic focusing (Auto Focus) that is used for mobile phone and notebook computer in the prior art.As shown in Figure 1, the prior art voice coil motor includes a fore-stock 100, after-poppet 105 and metal shell 110, described metal shell 110 inner chamber peripheries evenly are provided with four block permanent magnets 115, seat 120 is carried in one motion, its inner chamber is processed with internal thread, be used for screwing in motion output (as camera lens etc.), described motion is carried on the seat 120 and is fixed with loop coil 125, be movably placed in four block permanent magnets, 115 centers in the iron-clad metal shell 110 after this motion year seat 120 and coil 125 combinations, and produce that the action of a magnetic fields make it to repel each other or inhale mutually on this four block permanent magnet 115 by 125 energisings of this loop coil, thereby drive this motion and carry seat 120 coaxial line displacements, and this motion is carried seat 120 by before being located at it, spring leaf 130 and rear spring sheet 135 are supported on the concentric of this device before the back, to quicken driving/reduction.
Because connecting the forward and backward spring leaf 130,135 of motion year seat 120 all is whole slab constructions, need finish the electric current import feature by other, independent positive and negative input terminal 140,145, therefore, on described front spring sheet 130 and rear spring sheet 135, also be connected to positive and negative input terminal 140,145, and forward and backward spring leaf 130,135 participates in current circuit, so all need independent insulating trip 150,155 and metal shell 110 insulation to come.Simultaneously, the end of a thread of described coil 125 needs also to pass that described motion carries that the side of seat 120 offers crosses line groove 13 and the 130 welding conductings of front spring sheet.When passing through positive and negative input terminal 140,145, via front spring sheet 130 and rear spring sheet 135, when coil 125 energisings, permanent magnet 115 applies and front spring sheet 130 and rear spring sheet 135 relative coil 125 opposite effect power to described coil 125, under the effect of permanent magnet 115, the described motion of described coil 125 drives is carried seat 120 and is moved.Power by electrical current in the regulating winding 125 changes, and can realize moving carrying the control that seat 120 moves forward and backward displacement; And by the mechanical return force by the action of a magnetic field power and forward and backward spring leaf 130,135, can make motion carry seat 120 and be returned to initial position.
Fig. 2 has showed the structural representation of prior art spring leaf pair.This spring leaf pair is made up of forward and backward two spring leafs 130,135, and described forward and backward spring leaf 130,135 is plate shaped unitary circular structure, can play the effect of mechanical elasticity restoring force and current lead-through.But, therefore must rely on other independent positive and negative input terminal 140,145 to finish the import feature of electric current because forward and backward spring leaf 130,135 itself does not insert electric current; So in structure, plus end 140 is by realizing with rear spring sheet 135 welding manners with 130 welding of front spring sheet, negative terminal 145.On described forward and backward spring leaf 130,135, also have spring silk circuitous configuration 132, but spring silk round about manner normally is less than three sections simple round about manner.
Be not difficult to find out by above prior art, though existing voice coil motor can provide the linear displacement that needs, but still has following major defect: a) required component number is many, is difficult in further to dwindle the space on the structure, process implementing is poor, and the actual production quality is difficult to guarantee; B) because the forward and backward spring leaf of composition spring leaf pair all is disk constructions, need finish the electric current import feature, increase the quantity of part undoubtedly in addition by other independent positive and negative input terminal; C) forward and backward spring leaf all participates in current circuit, so all need independent insulating trip that itself and metal shell insulation are come; D) plus end, negative terminal are connected by welding manner with front spring sheet, rear spring sheet respectively, need higher welding procedure to guarantee its welding yields; E) because existing forward and backward spring leaf all adopts circular base, its spring silk round about manner is subjected to its erection space restriction, seem too dull and narrow, so when applying external force, required strength is less, as easy as rolling off a logly be subjected to external force skew and produce lateral inclination elasticity is restricted, answer speed is slow.
At present, continuous high speed development along with modern science and technology, the automatic focusing camera module of mobile phone and notebook computer is more and more littler, more and more thinner to the volume requirement of power unit, yield requirement to assembly technology is more and more higher, and require more and more lower to the assembly technology cost, the defective of above-mentioned prior art has largely been limited to its application in the automatic focusing camera module field of mobile phone and notebook computer.
[utility model content]
Technical problem to be solved in the utility model is the defective that overcomes above-mentioned prior art, a kind of improved spring leaf pair is provided, it has, and shift length is big, elastic-restoring force is strong and uniform characteristics, possesses the conducting terminal function simultaneously, can reduce the voice coil motor processing cost.
For reaching above-mentioned utility model purpose, the utility model proposes following technical scheme:
A kind of spring leaf pair that is used for microminiaturizationvoice voice coil motor, comprise: front spring sheet and rear spring sheet, described front spring sheet and rear spring sheet include a matrix, described matrix central authorities offer centre bore, coaxial from inside to outside inner ring motion ring and the outer ring retainer ring of being distributed with of this centre bore peripheral radial, described inner ring motion ring is provided with the screens structure, the outer ring retainer ring is provided with circuitous spring silk, it is characterized in that: described rear spring sheet is formed by the two halves spring leaf combination of dividing right and left, its respectively with just, negative input end joins, and is provided with the burst insulation tank between the two halves spring leaf.
Preferably, described front spring sheet and rear spring sheet matrix are and the rectangular flat structure.
Preferably, the circle retainer ring is provided with at least four staggered circuitous spring silks outside described front spring sheet and the rear spring sheet, and each circuitous spring filament shape is identical, and is distributed in evenly, symmetrically between inner ring motion ring and the outer ring retainer ring.
Preferably, described each circuitous spring silk can be distributed on four angles of rectangular flat matrix.
Further, on described two halves spring leaf, also be respectively equipped with at least one welding lug.
As can be seen from the above technical solutions, the utlity model has following technique effect:
1) the utility model forms the two halves spring leaf combination that the rear spring sheet is designed to divide right and left, can realize voice coil motor current reflux function separately by it, so the front spring sheet can save conducting function, therefore, do not need to be provided with again in addition and put into insulating trip separately and make it to separate,, save rapidoprint so can reduce voice coil motor product parts number and processing technology with metal shell, cut down finished cost, also can reduce the overall dimension of voice coil motor simultaneously.
2) the utility model is designed to forward and backward spring leaf base shape and the suitable rectangular configuration of voice coil motor metal shell end surface shape, the installation that both can be convenient to forward and backward spring leaf presses solidly, can increase the erection space of spring silk again, identical, the staggered circuitous spring silk of at least four strips can be set on the retainer ring of outer ring, can effectively elongate the extended distance of spring silk, improve the elastic-restoring force of spring leaf pair, thereby improved shift length and response speed that seat is carried in motion greatly, promoted the voice coil motor product quality.
[description of drawings]
Fig. 1 is the decomposing schematic representation of prior art voice coil motor;
Fig. 2 is the prior art voice coil motor secondary schematic diagram of reed of being hit by a bullet;
Fig. 3 is rear spring plate plane figure in the prior art voice coil motor;
Fig. 4 is the secondary schematic diagram of the utility model spring leaf;
Fig. 5 is the utility model rear spring plate plane figure;
Fig. 6 is the decomposing schematic representation of the voice coil motor of use the utility model spring leaf pair;
In the prior art accompanying drawing:
100 fore-stocks, 105 after-poppets; 110 metal shells
130 front spring sheets, 132 circuitous spring silks; 134 outer ring retainer rings;
135 rear spring sheets, 136 inner rings motion ring 140+ input terminal;
Insulating trip 155 back insulating trips before the 145-input terminal 150.
In the utility model accompanying drawing:
100 fore-stocks, 105 after-poppets; 110.1 metal shell
115.1 seat 125 coils are carried in magnet 120.1 motions;
130.1 front spring sheet 132.1 circuitous spring silk 134.1 outer ring retainer rings;
135.1 rear spring sheet; 136.1 inner ring motion ring; 155 back insulating trips
10 flat bases, 11 centre bores, 12 first circuitous spring silks;
13 second circuitous spring silks; 14 the 3rd circuitous spring silks; 15 the 4th circuitous spring silks;
16 burst insulation tanks; 17 plus ends folding is prominent; 18 negative terminals folding is prominent;
19 welding lugs; 20 screens structures.
[embodiment]
As Fig. 4, shown in Figure 5, the utility model comprises: front spring sheet 130.1 and rear spring sheet 135.1, described front spring sheet 130.1 and rear spring sheet 135.1 include a flat base 10, this matrix can adopt copper tin-nickel alloy sheet to make, and it has splendid elasticity, fatigue resistance, conductivity, easy weldability, oxidative resistance.Described matrix central authorities offer a centre bore 11, radially coaxial from inside to outside inner ring motion ring 136.1, the outer ring retainer ring 134.1 of being distributed with in these centre bore 11 neighborings, described inner ring motion ring 134.1 is provided with at least one screens structure 20, inner ring motion ring 136.1 can rely on this embossed card bit architecture 20 and motion to carry seat 120 and realize radial location, relies on the pressing of forward and backward support 100,105 to realize axial location; Described outer ring retainer ring 134.1 is provided with circuitous spring silk 132.1.As shown in Figure 5, rear spring sheet 135.1 described in the utility model is by the two halves spring leaf of dividing right and left---and back left spring sheet 135.1a, the right spring leaf 135.1b in back combine, both are symmetrically in matrix centre bore 11 longitudinal axis, be provided with the burst insulation tank 16 that both can be separated between described back left spring sheet 135.1a, the right spring leaf 135.1b in back, burst insulation tank 16 is centered in matrix centre bore 11 longitudinal axis.On the top of back left spring sheet 135.1a, the right spring leaf 135.1b in back, it is prominent 18 also vertically to have folded plus end folding prominent 17 and negative terminal folding respectively, can be used as the positive and negative input terminal of electric current, finishes the importing of electric current.In the said structure, because back left spring sheet 135.1a that rear spring sheet 135.1 is designed to divide right and left and the right spring leaf 135.1b in back, the voice coil motor current reflux function that can realize separately, and front spring sheet 130.1 just can save conducting function, compared with prior art, does not need to be provided with in addition again and puts into insulating trip separately and metal shell separates, so can reduce three auxiliary components of voice coil motor product, avoid the accurate welding procedure in three roads, saved rapidoprint, reduced processing cost.Simultaneously, owing to overall dimensions reduces, so also can reduce the overall dimension of voice coil motor.
As Fig. 4, shown in Figure 5, the utility model also is designed to the rectangular flat structure with the matrix of front spring sheet 130.1 and rear spring sheet 135.1, be that outer ring retainer ring 134.1 is designed to rectangle, the end surface shape of itself and voice coil motor metal shell is approaching, and the installation that can be convenient to front spring sheet 130.1 and rear spring sheet 135.1 presses solidly.
Because the utility model matrix 10 adopts rectangular configuration, therefore, on circle retainer ring 134.1 outside described front spring sheet 130.1 and the rear spring sheet 135.1, be provided with four staggered circuitous spring silks, be respectively first circuitous spring silk 12, second circuitous spring silk the 13, the 3rd circuitous spring silk the 14, the 4th circuitous spring silk 15.Above-mentioned each circuitous spring filament shape is identical, evenly, be distributed in symmetrically between inner ring motion ring 136.1 and the outer ring retainer ring 134.1, be to be separated by 90 ° between adjacent two circuitous spring silks, and each circuitous spring silk is distributed in an interior angle position of rectangular flat matrix 10, makes two circuitous spring silks being both even number or being both odd number be symmetrically distributed by the center of circle of matrix centre bore 11; The round about manner of spring silk is interspersed by installing space as far as possible, can effectively elongate the extended distance of spring silk, like this, can make and be positioned on the outer ring retainer ring 134.1 circuitous spring silk 132.1 length and extend greatly, can effectively improve front spring sheet 130.1 and rear spring sheet 135.1 elastic-restoring forces, thereby shift length and response speed that seat is carried in motion have been improved greatly, to promote the voice coil motor product quality.
As further improvement, the utility model also is provided with at least one welding lug 19 on left spring sheet 135.1a after the described rear spring sheet 135.1 and the right spring leaf 135.1b in back, can be convenient to the end of a thread, the welding of line tail of drawing with coil 125 bottoms.
The voice coil motor course of work: when electric current dashes forward 17,18 by positive and negative terminal folding, when left spring sheet 135.1a, the right spring leaf 135.1b in back switch on to conductive coil 125 afterwards via split type rear spring sheet 135.1, permanent magnet 115.1 carries seat 120.1 to conductive coil 125 and related motion thereof and applies the spring leaf pair formed with described forward and backward spring leaf 130.1,135.1 and carry the opposite magnetic field force of seat 120.1 to motion, under the magnetic field force effect of permanent magnet 115.1, described conductive coil 125 drives a motion year seat 120.1 and moves.Change by the power of regulating electric current in the conductive coil 125, thereby realize that motion year seat 120.1 moves forward and backward the accurate control of displacement; Mechanical return force by the spring leaf pair formed by the action of a magnetic field power and forward and backward spring leaf 130.1,135.1 makes motion carry seat 120.1 and is returned to initial position.After voice coil motor arrives the displacement limits position,, can rapidly seat 120.1 be carried in motion and retract initial position because circuitous spring silk 132.1 has restoring force preferably on the spring leaf pair.
The utility model front spring sheet 130.1 adopts the full slice system design, only bears the function that axial mechanical return force and radial alignment guarantee, but bears the electric current guiding function without it.Do not draw lead and its welding so do not need to carry seat 120.1 middle punches from motion especially; Then spring leaf 135.1 adopts left and right sides burst compound mode, remove and to bear the function that axial mechanical return force and radial alignment guarantee, also go up the function that the plus end folding is prominent 17, negative terminal folding prominent 18 is born the guiding of positive and negative electrode electric current by left spring sheet 135.1a, the right spring leaf 135.1b in back thereafter.Like this, only need to carry seat 120.1 one ends and the positive and negative polar curve tail of coil 125 and 135.1 conductings of rear spring sheet are drawn get final product from motion, very convenient, succinct.
Therefore, adopt more succinct topology layout that the voice coil motor of the secondary utility model of this spring leaf can realize, response time, littler overall dimension and the assembly technology of lower fraction defective faster.The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (5)
1, a kind of spring leaf pair that is used for microminiaturizationvoice voice coil motor, comprise: front spring sheet and rear spring sheet, described front spring sheet and rear spring sheet include a matrix, described matrix central authorities offer centre bore, coaxial from inside to outside inner ring motion ring and the outer ring retainer ring of being distributed with of this centre bore peripheral radial, described inner ring motion ring is provided with the screens structure, the outer ring retainer ring is provided with circuitous spring silk, it is characterized in that: described rear spring sheet is formed by the two halves spring leaf combination of dividing right and left, its respectively with just, negative input end joins, and is provided with the burst insulation tank between the two halves spring leaf.
2, a kind of spring leaf pair that is used for microminiaturizationvoice voice coil motor according to claim 1, it is characterized in that: the circle retainer ring is provided with at least four staggered circuitous spring silks outside described front spring sheet and the rear spring sheet, each circuitous spring filament shape is identical, and is distributed in evenly, symmetrically between inner ring motion ring and the outer ring retainer ring.
3, a kind of spring leaf pair that is used for microminiaturizationvoice voice coil motor according to claim 1 and 2, it is characterized in that: described front spring sheet and rear spring sheet matrix are the rectangular flat structure.
4. a kind of spring leaf pair that is used for microminiaturizationvoice voice coil motor according to claim 3 is characterized in that: described each circuitous spring silk is distributed on four angles of rectangular flat matrix.
5, according to claim 1 or 2 or 4 described a kind of spring leaf pairs that are used for microminiaturizationvoice voice coil motor, it is characterized in that: on the two halves spring leaf on the described rear spring sheet, be respectively equipped with at least one welding lug.6, a kind of spring leaf pair that is used for microminiaturizationvoice voice coil motor according to claim 3 is characterized in that: on the two halves spring leaf on the described rear spring sheet, be respectively equipped with at least one welding lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200919590U CN201156697Y (en) | 2008-02-03 | 2008-02-03 | Spring tab pair for ultra-small type voice coil motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200919590U CN201156697Y (en) | 2008-02-03 | 2008-02-03 | Spring tab pair for ultra-small type voice coil motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201156697Y true CN201156697Y (en) | 2008-11-26 |
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ID=40104473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200919590U Expired - Fee Related CN201156697Y (en) | 2008-02-03 | 2008-02-03 | Spring tab pair for ultra-small type voice coil motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201156697Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810967A (en) * | 2011-05-31 | 2012-12-05 | 鸿富锦精密工业（深圳）有限公司 | voice coil motor |
| CN103051145A (en) * | 2012-12-25 | 2013-04-17 | 深圳市威盟光电科技有限公司 | Voice coil motor and leaf spring thereof |
| CN108372369A (en) * | 2018-03-27 | 2018-08-07 | 苏州聚力电机有限公司 | A kind of typesetting design of the novel shrapnel of voice coil motor |
| CN112702841A (en) * | 2020-12-16 | 2021-04-23 | 苏州昀冢电子科技股份有限公司 | Base welded with electronic element and voice coil motor thereof |
-
2008
- 2008-02-03 CN CNU2008200919590U patent/CN201156697Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810967A (en) * | 2011-05-31 | 2012-12-05 | 鸿富锦精密工业（深圳）有限公司 | voice coil motor |
| CN102810967B (en) * | 2011-05-31 | 2016-05-11 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| CN103051145A (en) * | 2012-12-25 | 2013-04-17 | 深圳市威盟光电科技有限公司 | Voice coil motor and leaf spring thereof |
| CN108372369A (en) * | 2018-03-27 | 2018-08-07 | 苏州聚力电机有限公司 | A kind of typesetting design of the novel shrapnel of voice coil motor |
| CN112702841A (en) * | 2020-12-16 | 2021-04-23 | 苏州昀冢电子科技股份有限公司 | Base welded with electronic element and voice coil motor thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cang Qinglong Inventor before: Liu Hongwei Inventor before: Lu Zhihui |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LIU HONGWEI; LU ZHIHUI TO: ZANG QINGLONG |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081126 Termination date: 20120203 |