CN203562923U - Thin-type flat linear vibration motor - Google Patents
Thin-type flat linear vibration motor Download PDFInfo
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- CN203562923U CN203562923U CN201320628562.1U CN201320628562U CN203562923U CN 203562923 U CN203562923 U CN 203562923U CN 201320628562 U CN201320628562 U CN 201320628562U CN 203562923 U CN203562923 U CN 203562923U
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Abstract
The utility model provides a thin-type flat linear vibration motor. A protection device is located in a machine shell, at least one part of the protection device is arranged opposite to at least one part of an elastic support part in the height direction of the machine shell; the shortest distance from the protection device to the elastic support part is less than the shortest distance from a coil to a vibration block. According to the utility model, a vibration assembly can drive the elastic support part to stretch and compress when vibrating, the elastic support part and the vibration block generate a little vibration in the height direction of the machine shell in the process; and the protection device is arranged, the elastic support part cannot directly impact a cover plate, and the vibration block cannot directly impact the coil, so that the cover plate and the coil are protected, the integral service life of the vibration motor is prolonged, and the noise is reduced.
Description
Technical field
The utility model relates to a kind of vibrating motor, relates in particular to a kind of improved slim flat linear type vibration motor for portable consumer electronic product.
Background technology
Mobility consumption electronic product in the market, generally all can use vibrating motor as system feedback parts, such as, the incoming call prompting of mobile phone, vibrational feedback of game machine etc.Existing vibrating motor mainly comprises column motor unshakable in one's determination, hollow-cup motor and flat electric machine on the market.Itself structures shape of column motor unshakable in one's determination, hollow-cup motor the thickness of complicated, the motor of mechanism compared with the shortcomings such as thick, manufacturing process is many, the noise of complex process, motor is large and control precision is poor.Now, in order to adapt to the frivolous portable designing requirement of electric consumers, vibrating motor is also progressively to flat, frivolous future development.
Linear vibration electric motor refers to the motor that the direction of vibration of oscillator is straight reciprocating motion, because its vibration steadily, is widely used on consumption electronic products.Chinese patent literature CN200480000815.4 discloses a kind of linear vibration electric motor structure, the direction of vibration of the oscillator of this linear vibration electric motor is perpendicular to mounting plane, therefore, need higher vertical height so that oscillator moves up and down, thereby the height of whole motor is increased.
Chinese patent literature CN101488679B discloses a kind of flat linear vibrating motor, it comprises upper cover, coordinate the pedestal that forms spatial accommodation with upper cover, be contained in spatial accommodation and be positioned at the coil on pedestal, be connected in the elastic supporting member for supporting optical member on pedestal, by the supported and suspended permanent magnet in spatial accommodation of elastic supporting member for supporting optical member, pedestal is provided with some sidewalls and perpendicular to the diapire of sidewall, coil is arranged on diapire and is positioned at the bottom center position of permanent magnet, between coil and permanent magnet, there is gap, wherein, the magnetic pole of permanent magnet is over against coil, and permanent magnet is contrary over against the polarised direction of the magnetic pole of coil.In use, permanent magnet
Under the effect of magnetic field force, along the direction that is parallel to base bottom wall, move, thereby form to be parallel to, flat edge is installed the direction that is parallel to base bottom wall and carry out linear oscillator, thereby make not need between upper cover and permanent magnet reserved higher oscillation space, and then reduced the distance between upper cover and permanent magnet, be convenient to the thin design of vibrating motor.Yet still there is in actual use following technical problem in above-mentioned vibrating motor:
The first, coil is directly installed on the below of balancing weight, due to elastic supporting member for supporting optical member relative flexibility, when magnetic force is larger, when balancing weight drives permanent magnet side-to-side vibrations, elastic supporting member for supporting optical member and balancing weight also can produce up-down vibration, thereby make the whole constantly shock of balancing weight coil, this not only produces larger noise, if things go on like this also can have a strong impact on the useful life of the parts such as coil;
The second, its coil is positioned at the bottom center position of permanent magnet, and be arranged on the diapire of pedestal, the lead end of coil and the conducting strip welding being arranged on pedestal sidewall, conducting strip further for example, is welded to connect with the mainboard of user side (mobile phone), in use, if when vibrating motor damages, the mainboard of user side need to together be changed, very inconvenience; And if by coil be simply replaced into be placed on permanent magnet below this will cause the magnetic line of force will pass through formation loop, casing bottom surface, path is longer, thus magnetic force a little less than;
Three, its elastic supporting member for supporting optical member comprises location division, elastic force wall and junction surface, wherein, the size in the gap between elastic force wall has considerable influence to the vibratory output of motor and vibration precision, elastic supporting member for supporting optical member is integrated, especially the elastic force wall part that is formed in one, this kind of structural design causes in the manufacture process of vibrating motor, being difficult to for the difference requirement of vibratory output and vibration precision, carry out accommodation according to different clients, and then causes the universality of vibrating motor poor;
Four, the junction surface of its elastic supporting member for supporting optical member has upper lower clamping piece, and upper lower clamping piece forms the installing space with installing port, and during installation, balancing weight is in installing port B puts in the installing space of lower clamping piece formation.In use, breeding piece and permanent magnet along away from or the direction that stretches into installing port vibrate, when design, need to precompute according to the elastic force of vibratory output and elastic force wall the size of the installing space of upper lower clamping piece formation, need to guarantee when vibration, balancing weight can not depart from the installing space of the upper lower clamping piece formation that is positioned at pedestal one side, and then causes the complexity of global design.
While five, using, vibration back and forth in the installing space that need to form at upper lower clamping piece due to balancing weight, during vibration with between upper lower clamping piece due to the larger vibration noise of larger friction generation.
Utility model content
For this reason, first technical problem to be solved in the utility model is to overcome vibrating motor coil low defect in useful life of the prior art, thereby a kind of coil relatively high improved slim flat linear type vibration motor in useful life is provided.
Second technical problem to be solved in the utility model is to overcome the defect that its mounting structure of vibrating motor of the prior art causes the replacing inconvenience that winding wiring terminal need to cause with the welding of user side mainboard, thereby provide a kind of, at vibrating motor, damages and do not need to change the slim flat linear type vibration motor of user side mainboard while changing simultaneously.
The 3rd technical problem to be solved in the utility model be to overcome its elasticity arm of vibrating motor of the prior art be formed in one part and cause manufacture time universality poor problem, thereby a kind of higher slim flat linear type vibration motor of universality of being convenient to adjust according to user side demand during fabrication vibratory output and control precision is provided.
The vibrating motor that provides a kind of noise less is provided the 4th technical problem to be solved in the utility model.
For this reason, the utility model provides a kind of slim flat linear type vibration motor, comprise casing, mount cover on described casing and form the cover plate of installing space with described casing, by laying respectively at the location of the elastic supporting member for supporting optical member in two opposing sidewalls of described casing, be suspended on the vibration component in described installing space, described vibration component involving vibrations piece and be arranged on the permanent magnet on described vibrating mass, be positioned at described permanent magnet specified distance at least two coils of series connection are mutually installed, described vibration component can be stretched accordingly and compress along two elastic supporting member for supporting optical member that are basically parallel to the direction double vibrations of described casing bottom surface and make to be positioned in opposing sidewalls in vibration processes under the effect of magnetic field force, it is characterized in that: also comprise protective device, described protective device is positioned at casing, and have at least a part to be oppositely arranged with at least a portion of described elastic supporting member for supporting optical member in the short transverse of casing, to stop described elastic supporting member for supporting optical member directly to clash into described cover plate when described vibration component vibrates.
Described protective device is less than the beeline of vibrating mass described in described coil distance at a distance of the beeline of described elastic supporting member for supporting optical member, to stop described vibrating mass directly to clash into described cover plate when the described vibration component vibration.
On described protective device and/or described elastic supporting member for supporting optical member, buffer structure is set, with the noise that reduces to produce when described protective device and described elastic supporting member for supporting optical member clash into.
Described elastic supporting member for supporting optical member comprises after minute body formed having interconnective the first brace of a part and the second brace at least, the part not being connected of described the first brace and described the second brace arranges and forms strain gap in opposite directions, described the first brace is connected with the sidewall of described casing, and described the second brace is connected with described vibrating mass.
Described the first brace is identical with the structure of described the second brace.
On the inwall arranging in opposite directions of described the first brace and described the second brace, first stopper is installed respectively, described buffer structure comprises and is arranged on the block rubber on stopper described at least one.
On the outer wall that interconnects part of described the first brace and described the second brace, the second stopper is installed.
On the length direction of described the first brace and described the second brace, has a part of height at least lower than the height of other parts.
Described block rubber is arranged on described the first brace, and described protective device comprises cover plate guide vane end stop, and described cover plate guide vane end stop is arranged on the inwall of described cover plate, and has at least a part to be oppositely arranged with block rubber in the short transverse of described casing.
Described coil connects insulation board and is positioned at same level with it, described insulation board has the lug boss that protrudes from from the side described installing space, the binding post of pegging graft with user side mainboard is installed on described lug boss, the inside of described insulation board is embedded with wire, one end of described wire is electrically connected to the lead end of described coil, and the other end is electrically connected to described binding post.
Described insulation board is pcb board.
On described casing, have spill mounting groove, it is interior and supported that the described lug boss of described insulation board is connected to described spill mounting groove.
In the gap of the specific range forming between described permanent magnet and described coil, be filled with magnetic liquid lubrication agent.
Described permanent magnet is one, and the magnetic pole on its both sides is over against described coil, and contrary over against the polarised direction of the described magnetic pole of coil.
Described vibrating mass has installation through hole, and described permanent magnet is arranged in described installation through hole and makes its upper and lower surface substantially concordant with described vibrating mass.
Described vibrating mass adopts density to be greater than 17g/cm
3heavy alloy manufacture form.
Upper surface at described coil is installed magnetic conductive board.
The linear vibration electric motor that the utility model provides has the following advantages:
1. the slim flat linear type vibration motor that the utility model provides; also comprise protective device; described protective device is positioned at casing; and have at least a part to be oppositely arranged with at least a portion of described elastic supporting member for supporting optical member in the short transverse of casing, to stop described elastic supporting member for supporting optical member to clash into described cover plate when described vibration component vibrates.During vibration component vibration; can drive elastic supporting member for supporting optical member to stretch and compression movement; in this process; described elastic supporting member for supporting optical member produces a small amount of vibration in the short transverse of casing; owing in the short transverse of casing, protective device being set, thereby while making to vibrate, described elastic supporting member for supporting optical member can not strike on the cover plate of described casing; protect cover plate and elastic supporting member for supporting optical member, improved the useful life of vibrating motor integral body.
2. the slim flat linear type vibration motor that the utility model provides, described protective device is less than the beeline of vibrating mass described in described coil distance at a distance of the beeline of described elastic supporting member for supporting optical member, thereby, at described vibration component during in casing internal vibration, even if produce along the concussion of the short transverse of casing, also can make described elastic supporting member for supporting optical member first contact with described protective device, not only protected described elastic supporting member for supporting optical member, and avoided the shock between described vibrating mass and described coil, protected coil simultaneously, and reduced owing to clashing into the noise producing between vibrating mass and coil.
3. the slim flat linear type vibration motor that the utility model provides arranges buffer structure on described protective device and/or described elastic supporting member for supporting optical member, with the noise that reduces to produce when described protective device and described elastic supporting member for supporting optical member clash into.On described protective device and/or described elastic supporting member for supporting optical member, buffer structure is set, makes elastic supporting member for supporting optical member when contacting with described protective device, the noise producing in the time of can reducing both and contact by buffer structure, and protection elastic supporting member for supporting optical member.
4. the slim flat linear type vibration motor that the utility model provides, described elastic supporting member for supporting optical member comprises after minute body formed having interconnective the first brace of a part and the second brace at least, between the part not connecting of described the first brace and described the second brace, form strain gap, described the first brace is connected with the sidewall of described casing, and described the second brace is connected with described vibrating mass.Because dividing after body formed, described the first brace and described the second brace be connected again, therefore, during fabrication, can require according to the precompression of elastic supporting member for supporting optical member the link position of described the first brace of design and the second brace, and then the deformation gap that forms of the not coupling part that changes described the first brace and the second brace, thereby make vibrating motor of the present utility model there is good universality.
5. the slim flat linear type vibration motor that the utility model provides is installed respectively first stopper on the inwall arranging in opposite directions of described the first brace and described the second brace, described at least one, on the first stopper, block rubber is installed.The first stopper is set the useful life that has increased elastic supporting member for supporting optical member, the installation of block rubber make the first brace and the second brace be stretched and contraction process in cushioned under the collision that the produces effect at block rubber, thereby improved the useful life of elastic supporting member for supporting optical member, also reduced noise.
6. the slim flat linear type vibration motor that the utility model provides; described block rubber is arranged on described the first brace; described protective device comprises cover plate guide vane end stop; described cover plate guide vane end stop is arranged on the inwall of described cover plate, and has at least a part to be oppositely arranged with block rubber in the short transverse of described casing.By being arranged on the more stable work that makes described cover plate guide vane end stop on described cover plate, described cover plate guide vane end stop has at least a part to be oppositely arranged with the described block rubber of described the first brace in the short transverse of described casing, owing to being provided with block rubber on described the first brace, even when described the first brace strikes on described cover plate guide vane end stop, the major part of described cover plate guide vane end stop even all also only can contact with described block rubber, can directly not contact with elastic supporting member for supporting optical member, thereby the noise producing while greatly reducing the first brace and described cover plate guide vane end stop shock by block rubber, not only protected the first brace, and reduced the operating noise of vibrating motor integral body.
7. the slim flat linear type vibration motor that the utility model provides, installs magnetic conductive board at the upper surface of described coil.By increase magnetic conductive board, make the magnetic line of force pass magnetic conductive board and directly go back, form loop, and make the magnetic line of force just can form loop by casing bottom surface, thereby have to utilize, improve magnetic field intensity, and then make linear vibration motor there is larger amplitude.
8. the slim flat linear type vibration motor that the utility model provides, described coil is arranged on the top of described permanent magnet, this can draw the lead end of coil easily from the top of installing space, described coil connects insulation board and is positioned at same level with it, described coil connects insulation board and is positioned at same level with it, described insulation board has the lug boss that protrudes from from the side described installing space, the binding post of pegging graft with user side mainboard is installed on described lug boss, the inside of described insulation board is embedded with wire, one end of described wire is electrically connected to the lead end of described coil, the other end is electrically connected to described binding post.After lead end is electrically connected to wire with described insulation board welding is rear, by binding post, can realizes and being connected with the grafting of user side mainboard.In use, when needing repairing or changing if vibrating motor damages, the binding post being positioned on lug boss of vibrating motor is extracted and can vibrating motor be changed and be keeped in repair from user side mainboard, and do not need to change user side mainboard simultaneously, very convenient.
9. the slim flat linear type vibration motor that the utility model provides, is filled with magnetic liquid lubrication agent in the gap with specific range forming between described permanent magnet and described coil.This kind of design further avoided vibration noise.
Accompanying drawing explanation
For the content of utility model is more likely to be clearly understood, according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the casing of vibrating motor in embodiment 1 and the outside drawing after cover plate installation;
Fig. 2 is the decomposition texture schematic diagram of the vibrating motor in Fig. 1;
Fig. 3 is that in embodiment 1, vibrating motor is removed the internal structure schematic diagram after cover plate, magnetic conductive board and coil;
Fig. 4 is that in embodiment 1, vibrating motor is removed the internal structure schematic diagram after cover plate;
Fig. 5 is the structural representation of the elastic supporting member for supporting optical member in embodiment 1;
Fig. 6 is the longitudinal sectional drawing of the vibrating motor shown in Fig. 1;
Fig. 7 is the linear oscillator schematic diagram of embodiment 1 vibrating motor;
In figure, Reference numeral is expressed as:
1-casing, 11-spill mounting groove, 12-the first side wall, 13-the second sidewall, 14-bottom surface, 15-rear wall; 16-antetheca; 2-cover plate, 21-cover plate jut; 3-elastic supporting member for supporting optical member, 31-the first brace, 32-the second brace; 33-the first stopper; 34-block rubber; 35-the second stopper; 4-vibration component, 41-vibrating mass; 42-permanent magnet, 43-installs through hole; 5-coil, 51-square groove; 6-insulation board; 61-lug boss; 7-magnetic conductive board; 8-cover plate guide vane end stop.
Embodiment
As 1 and Fig. 2 as shown in, the present embodiment provides a kind of vibrating motor, comprise casing 1 and mount cover the cover plate 2 on described casing 1, described casing 1 has bottom surface 14, the first side wall 12 being connected with bottom surface 14, the second sidewall 13, antetheca 16 and rear wall 15, described bottom surface 14 surrounds a cavity with certain height with the above-mentioned sidewall of casing 1, on described antetheca 16, offer spill mounting groove 11, described cover plate 2 has an outside outstanding cover plate jut 21, described cover plate jut 21 is plugged in described spill mounting groove 11, thereby together with described cover plate 2 is formed with described casing 1, form an installing space.
In described installing space, direction from the bottom surface 14 of described casing 1 towards described cover plate 2 is provided with vibration component 4 successively, two coil 5(coils 5 of mutually connecting are connected with pcb board 6, and both are in same level) and magnetic conductive board 7, , the common vibration component 4 that forms of described vibrating mass 41 and described permanent magnet 42, described vibration component 4 is mounted respectively elastic supporting member for supporting optical member on the first side wall 12 of described casing 1 and the second sidewall 13 3 and supports and hang and be fixed in described installing space, at this, hang and fixedly refer to that described vibration component 4 does not contact with the bottom surface 14 of described casing 1.
Particularly, described vibrating mass 41 has installs through hole 43, and permanent magnet 42 is arranged in described installation through hole 43 and makes its upper and lower surface substantially concordant with described vibrating mass 41, described in the top distance of described permanent magnet 42, permanent magnet 42 upper surface specified distance are provided with coil 5, the magnetic pole on the both sides of permanent magnet 42 is over against described coil 5, and the polarised direction over against the described magnetic pole of coil 5 is contrary, thereby between the upper surface of described permanent magnet 42 and the lower surface of described coil 5, form the gap with specific range, in described gap, be filled with magnetic liquid lubrication agent, described magnetic liquid lubrication agent is attracted to the upper surface of permanent magnet 42 under magnetic action, the middle part of described coil 5 offers square groove 51, the lead end of coil 5 stretches out in described square groove 51, the lead end and the pcb board 6 that stretch out the coil 5 of square groove 51 weld together, specifically, described pcb board 6 has lug boss 61, described lug boss 61 has the bearing of trend identical with described cover plate jut 21, and together insert with described cover plate jut 21 that described spill mounting groove 11 is interior stretches out described installing space after supported, in described lug boss 61, be embedded with wire, on described lug boss 61, be provided with binding post, the lug boss 61 of described lead end and pcb board 6 welds together, and one end of wire is electrically connected to lead end, the other end of wire is electrically connected to binding post.When vibrating motor is connected with user side mainboard, only the binding post on lug boss 61 need to be plugged on the mainboard of user side, when needing to change and keeping in repair when vibrating motor damage, binding post can be pulled up from mainboard, thereby realize the split of vibrating motor and mainboard, do not need to change vibrating motor and mainboard simultaneously.
The vibrating motor that the present embodiment provides also comprises protective device; described protective device is positioned at casing 1; and have at least a part to be oppositely arranged with at least a portion of described elastic supporting member for supporting optical member 3 in the short transverse of casing 1, to stop described elastic supporting member for supporting optical member 3 directly to clash into described cover plate 2 when described vibration component 4 vibrates.
During vibration component 4 vibration; can drive elastic supporting member for supporting optical member 3 to stretch and compression movement; in this process; described elastic supporting member for supporting optical member 3 produces a small amount of vibration in the short transverse of casing 1; owing in the short transverse at casing 1, protective device being set, thereby while making to vibrate, described elastic supporting member for supporting optical member 3 can not strike on the cover plate 2 of described casing 1; protect cover plate 2 and elastic supporting member for supporting optical member 3, improved the useful life of vibrating motor integral body.
In the present embodiment; described protective device is less than described coil 5 at a distance of the beeline of described vibrating mass 41 at a distance of the beeline of described elastic supporting member for supporting optical member 3; thereby; when described vibration component 4 is during in casing 1 internal vibration; even if produce along the concussion of the short transverse of casing 1; also can make described elastic supporting member for supporting optical member 3 first contact with described protective device; avoided the shock between described vibrating mass 41 and described coil 5; protected coil 5 simultaneously, and reduced owing to clashing into the noise producing between vibrating mass 41 and coil 5.
In the present embodiment; described protective device comprises cover plate guide vane end stop 8; described cover plate guide vane end stop 8 is arranged on the inwall of described cover plate 2; and have at least a part relative with elastic supporting member for supporting optical member 3 in the short transverse of described casing 1; further; while clashing into described protective device for fear of described elastic supporting member for supporting optical member 3, produce larger my noise; described elastic supporting member for supporting optical member 3 arranges buffer structure on the position relative with described protective device; the noise producing when reducing both and contact by buffer structure, and protection elastic supporting member for supporting optical member 3.In the present embodiment, described buffer structure is the block rubber 34 being arranged on described elastic supporting member for supporting optical member 3.As a kind of distortion of the present embodiment, described buffer structure can also be arranged on described protective device.
How the vibration component 4 illustrating in the present embodiment below in conjunction with accompanying drawing is hung and to be fixed in described installing space by described elastic supporting member for supporting optical member 3, and described elastic supporting member for supporting optical member 3 has the feature of high damping.As shown in Fig. 2-6, described elastic supporting member for supporting optical member 3 comprises after minute body formed having interconnective the first brace 31 of a part and the second brace 32 at least, described the first brace 31 is identical with the structure of described the second brace 32, described the first brace 31 arranges in opposite directions with the part not being connected of described the second brace 32, on the inwall arranging in opposite directions of described the first brace 31 and described the second brace 32, first stopper 33 is installed respectively, between two the first stoppers 33, form strain gap A (seeing Fig. 6), described at least one, on the first stopper 33, block rubber 34 is installed, described block rubber 34 is relative with described cover plate guide vane end stop 8, on the outer wall that interconnects part of described the first brace 31 and described the second brace 32, the second stopper 35 is installed.
Described vibrating motor has two elastic supporting member for supporting optical member 3, two elastic supporting member for supporting optical member 3 are arranged on contrary direction on the sidewall of described casing 1 (seeing Fig. 3 and Fig. 4), described first brace 31 of described elastic supporting member for supporting optical member 3 is connected with the sidewall 12,13 of described casing 1 respectively, and described the second brace 32 is connected with described vibrating mass 41.After installation, two described elastic supporting member for supporting optical member 3 lay respectively at the both sides of described vibrating mass 41, thereby described vibrating mass 41 is suspended in described casing 1, and the strain gap that the first brace 31 and the second brace 32 form is parallel to the bottom surface 14 of casing 1, it is also the bottom surface 14 that the deformation direction of elastic supporting member for supporting optical member 3 is parallel to described casing 1.
After left, the vibration of (or to the right) starts, vibration component 4 is along the direction vibration that is parallel to casing 1 bottom surface 14, the second brace 32 that is positioned at the elastic supporting member for supporting optical member 3 on 1 one sidewalls of casing moves towards the direction near the first brace 31 under the drive of vibration component 4, and make block rubber 34 constantly compressed, because block rubber 34 is softer, it can not send powerful noise in compressed process.And, cover plate guide vane end stop 8 is set on the inwall due to described cover plate 2, described cover plate guide vane end stop 8 is relative with the block rubber 34 on described the first brace 31, described cover plate guide vane end stop 8 is less than described coil 5 at a distance of the beeline of described vibrating mass 41 at a distance of the beeline of described elastic supporting member for supporting optical member 3, even the vibration that described elastic supporting member for supporting optical member 3 and vibrating mass 41 produce along casing 1 short transverse, also can make described elastic supporting member for supporting optical member first contact with described protective device, not only protected described elastic supporting member for supporting optical member, and avoided the shock between described vibrating mass and described coil, protected coil simultaneously, and reduced owing to clashing into the noise producing between vibrating mass and coil.
The first brace 31 of elastic supporting member for supporting optical member 3 described above and the second brace 32 adopt a minute body formed mode moulding respectively, and then the part of the two is connected, and between the part not connecting, form strain gap A.Because described the first brace 31 and described the second brace 32 minutes are connected after body formed again, therefore, during fabrication, can require according to the precompression of elastic supporting member for supporting optical member 3 link position of described the first brace 31 of design and the second brace 32, change the deformation gap of the not coupling part formation of described the first brace 31 and the second brace 32, thereby make the vibrating motor of the present embodiment there is good universality.
At this, described the first brace 31 is welding with the fixed form of described casing 1, be specially laser welding, described the second brace 32 is also laser welding with the connected mode of described vibrating mass 41, certainly can also adopt other welding manners well known in the art maybe described vibrating mass 41 and the second brace 3 of described elastic supporting member for supporting optical member 3 can be fixed, and in vibrating mass 41 vibration processes, make it can not produce the fixed form of relative displacements with the second brace 3.Described elastic supporting member for supporting optical member 3 is spring.Described vibrating mass 41 adopts a kind of heavy alloy tungsten gold to manufacture, and density is greater than 17g/cm
3, adopt compacting sintering form to make, can under very little volume, there is higher quality, thereby improve vibratory output.
Vibrating motor in the present embodiment, in order to realize frivolous object, in order to reach the object of the thickness that reduces casing 1, be arranged on the magnetic pole of two permanent magnets 42 on described vibrating mass 41 over against described coil 5, and the polarised direction over against the described magnetic pole of coil 5 is contrary, the magnetic pole polarised direction forming when as shown in Figure 7, coil 5 is switched on is parallel with the direction of magnetization of the permanent magnet 42 on vibrating mass 41.Particularly, the wherein magnetic pole of that is fixed on two permanent magnets 42 on described vibrating mass 41 is contrary with the magnetic pole of another piece, see Fig. 7, and the magnetic pole plane parallel of permanent magnet 42 is in the bottom surface 14 of casing 1, also be parallel to coil 5, that is, the N utmost point of permanent magnet 42 or the S utmost point are over against the bottom surface 14 of casing 1, also over against coil 5.
During coil 5 energising, it obtains alternating current from outside, electric current flows along the coiling direction of coil 5, the a certain moment, in Fig. 7, the magnetic field on the left side produces perpendicular to the outside electric current of drawing, in Fig. 7, the magnetic field on the right produces perpendicular to drawing electric current inwards, in figure, simply illustrate each magnetic line of force direction, according to left hand rule, it is F1 ' that magnetic field, the left side produces magnetic field force, direction to the right, it is F2 ' that magnetic field, the right produces magnetic field force, direction equally to the right, and both sizes are identical, therefore, the direction of the magnetic field force that whole coil 5 is subject to is for left, but, because coil 5 itself is positioned in the sidewall 12 of casing 1, on 13, therefore coil 5 can not move, but the relation due to active force and reaction force, two permanent magnets 42 are subject to respectively direction and F1 ', F1 and F2 effect that F2 ' opposite direction size is identical, and permanent magnet 42 is together suspended in installing space with vibrating mass 41, and the strain direction of elastic supporting member for supporting optical member 3 is parallel to the bottom surface 14 of casing 1, therefore, permanent magnet 42 and vibrating mass 41 1 coexist under the effect of magnetic field force to left movement (F1 in figure, the direction of arrow of F2).If the sense of current changes, permanent magnet 42 together moves right with vibrating mass 41, and the reciprocating motion that forms left and right with this, is parallel to the vibration of bottom surface.Because the direction of vibration of vibration component in vibrating motor is the bottom surface 14 that is parallel to casing 1, therefore, on the thickness direction of casing 1, does not need reserved larger gap to vibrate for it, thereby realized the frivolous and flat of motor.
As a kind of distortion of the present embodiment, two permanent magnets 42 can be made to one, the pole orientation of half is contrary with second half pole orientation, also can produce the effect identical with a upper execution mode.
Above-mentioned embodiment is just explained in detail the technical solution of the utility model; the utility model has more than and is only confined to above-described embodiment; those skilled in the art should be understood that; the above-mentioned principle of every foundation and the improvement of spirit on the utility model basis, substitute, all should be within protection range of the present utility model.
Claims (16)
1. a slim flat linear type vibration motor, comprise casing (1), mount cover at described casing (1) upper and form the cover plate (2) of installing space with described casing (1), by laying respectively at the location of the elastic supporting member for supporting optical member (3) in (1) two opposing sidewalls of described casing, be suspended on the vibration component (4) in described installing space, described vibration component (4) involving vibrations piece (41) and be arranged on the permanent magnet (42) on described vibrating mass (41), be positioned at described permanent magnet (42) specified distance at least two coils (5) of series connection are mutually installed, described vibration component (4) can be stretched accordingly and compress along two elastic supporting member for supporting optical member (3) that are basically parallel to the direction double vibrations of described casing (1) bottom surface and make to be positioned in opposing sidewalls in vibration processes under the effect of magnetic field force, it is characterized in that: also comprise protective device, described protective device is positioned at casing (1), and have at least a part to be oppositely arranged with at least a portion of described elastic supporting member for supporting optical member (3) in the short transverse of casing (1), to stop described elastic supporting member for supporting optical member (3) directly to clash into described cover plate (2) when described vibration component (4) vibrates.
2. slim flat linear type vibration motor according to claim 1; it is characterized in that: described protective device is less than described coil (5) at a distance of the beeline of described vibrating mass (41), to stop described vibrating mass (41) directly to clash into described coil (5) when described vibration component (4) vibrates at a distance of the beeline of described elastic supporting member for supporting optical member (3).
3. slim flat linear type vibration motor according to claim 2; it is characterized in that: on described protective device and/or described elastic supporting member for supporting optical member (3), buffer structure is set, with the noise that reduces to produce when described protective device and described elastic supporting member for supporting optical member (3) clash into.
4. slim flat linear type vibration motor according to claim 3, it is characterized in that: described elastic supporting member for supporting optical member (3) comprises after minute body formed having a part interconnective the first brace (31) and the second brace (32) at least, the part not being connected of described the first brace (31) and described the second brace (32) arranges and forms strain gap (A) in opposite directions, described the first brace (31) is connected with the sidewall of described casing (1), and described the second brace (32) is connected with described vibrating mass (41).
5. slim flat linear type vibration motor according to claim 4, is characterized in that: described the first brace (31) is identical with the structure of described the second brace (32).
6. slim flat linear type vibration motor according to claim 4, it is characterized in that: on the inwall arranging in opposite directions of described the first brace (31) and described the second brace (32), first stopper (33) is installed respectively, described buffer structure comprises and is arranged on the block rubber (34) on stopper (33) described at least one.
7. according to the slim flat linear type vibration motor described in claim 5 or 6, it is characterized in that: on the outer wall that interconnects part of described the first brace (31) and described the second brace (32), the second stopper (35) is installed.
8. slim flat linear type vibration motor according to claim 6; it is characterized in that: described block rubber (34) is arranged on described the first brace (31); described protective device comprises cover plate guide vane end stop (8); described cover plate guide vane end stop (8) is arranged on the inwall of described cover plate (2), and has at least a part to be oppositely arranged with block rubber (34) in the short transverse of described casing (1).
9. according to the slim flat linear type vibration motor described in any one in claim 1-3, it is characterized in that: described coil (5) connects insulation board (6) and is positioned at same level with it, described insulation board (6) has the lug boss (61) that protrudes from from the side described installing space, the binding post of pegging graft with user side mainboard is installed on described lug boss (61), the inside of described insulation board (6) is embedded with wire, one end of described wire is electrically connected to the lead end of described coil (5), and the other end is electrically connected to described binding post.
10. slim flat linear type vibration motor according to claim 9, is characterized in that: described insulation board (6) is pcb board.
11. slim flat linear type vibration motors according to claim 10, it is characterized in that: on described casing (1), have spill mounting groove (11), it is interior and supported that the described lug boss (61) of described insulation board (6) is connected to described spill mounting groove (11).
12. according to the slim flat linear type vibration motor described in any one in claim 1-3, it is characterized in that: in the gap of the specific range forming between described permanent magnet (42) and described coil (5), be filled with magnetic liquid lubrication agent.
13. according to the slim flat linear type vibration motor described in any one in claim 1-3, it is characterized in that: described permanent magnet (42) is one, and the magnetic pole on its both sides is over against described coil (5), and contrary over against the polarised direction of the described magnetic pole of coil (5).
14. according to the slim flat linear type vibration motor described in any one in claim 1-3, it is characterized in that: described vibrating mass (41) has installation through hole, described permanent magnet (42) is arranged in described installation through hole (43) and makes its upper and lower surface substantially concordant with described vibrating mass (41).
15. according to the slim flat linear type vibration motor described in any one in claim 1-3, it is characterized in that: described vibrating mass (41) adopts density to be greater than 17g/cm
3heavy alloy manufacture form.
16. according to the slim flat linear type vibration motor described in any one in claim 1-3, it is characterized in that: the upper surface at described coil (5) is installed magnetic conductive board (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320628562.1U CN203562923U (en) | 2013-10-12 | 2013-10-12 | Thin-type flat linear vibration motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320628562.1U CN203562923U (en) | 2013-10-12 | 2013-10-12 | Thin-type flat linear vibration motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203562923U true CN203562923U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320628562.1U Expired - Fee Related CN203562923U (en) | 2013-10-12 | 2013-10-12 | Thin-type flat linear vibration motor |
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| Country | Link |
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| CN (1) | CN203562923U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490582A (en) * | 2013-10-12 | 2014-01-01 | 金龙机电股份有限公司 | Thin type flat linear vibration motor |
| CN105071626A (en) * | 2015-07-31 | 2015-11-18 | 瑞声光电科技(常州)有限公司 | Linear vibration motor |
| WO2022126770A1 (en) * | 2020-12-17 | 2022-06-23 | 瑞声声学科技(深圳)有限公司 | Elastic member and vibration motor |
-
2013
- 2013-10-12 CN CN201320628562.1U patent/CN203562923U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490582A (en) * | 2013-10-12 | 2014-01-01 | 金龙机电股份有限公司 | Thin type flat linear vibration motor |
| CN105071626A (en) * | 2015-07-31 | 2015-11-18 | 瑞声光电科技(常州)有限公司 | Linear vibration motor |
| CN105071626B (en) * | 2015-07-31 | 2017-12-22 | 瑞声光电科技(常州)有限公司 | A kind of linear vibration electric motor |
| WO2022126770A1 (en) * | 2020-12-17 | 2022-06-23 | 瑞声声学科技(深圳)有限公司 | Elastic member and vibration motor |
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