CN203377766U - An improved thin flat linear vibration motor - Google Patents
An improved thin flat linear vibration motor Download PDFInfo
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- CN203377766U CN203377766U CN201320492350.5U CN201320492350U CN203377766U CN 203377766 U CN203377766 U CN 203377766U CN 201320492350 U CN201320492350 U CN 201320492350U CN 203377766 U CN203377766 U CN 203377766U
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Abstract
The utility model provides an improved thin flat linear vibration motor comprising a protection device disposed between a vibration assembly and a cover plate or between a vibration assembly and the bottom surface of an enclosure for preventing the vibration assembly from striking a coil directly in movement, so that the coil is protected. The noise is also greatly 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 the portable consumer electronic product.
Background technology
Mobility consumption electronic product in the market, generally all can use vibrating motor as the 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 than the shortcomings such as thick, that 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 make the height of whole motor increase.
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, there is gap between coil and permanent magnet, 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, flat edge is installed the direction that is parallel to base bottom wall and carry out linear oscillator thereby form to be parallel to, thereby make between upper cover and permanent magnet and do not need 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 following technical problem in actual use in above-mentioned vibrating motor:
The first, coil is directly installed on the below of balancing weight, due to the elastic supporting member for supporting optical member relative flexibility, when magnetic force is larger, when balancing weight drives the permanent magnet side-to-side vibrations, elastic supporting member for supporting optical member and balancing weight also can produce up-down vibration, thereby make, balancing weight is whole can constantly clash into coil, and 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 be arranged on the 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 simply be 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 the elastic force wall has considerable influence to vibratory output and the vibration precision of motor, 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 carry out accommodation according to different clients for the difference requirement of vibratory output and vibration precision, 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 break away 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.
The 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 of the replacing inconvenience that its mounting structure of vibrating motor of the prior art causes the winding wiring terminal 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 is to overcome that its elasticity arm of vibrating motor of the prior art is formed in one part and the poor problem of universality during the manufacture that causes, thereby a kind of higher slim flat linear type vibration motor of universality of being convenient to adjust according to the 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 improved slim flat linear type vibration motor, comprise casing, mount cover on described casing and form the cover plate of installing space with described casing, be suspended on the vibration component in described installing space by the location that lays respectively at the elastic supporting member for supporting optical member on two opposing sidewalls of described casing, 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 coil is installed, described vibration component can be under the effect of magnetic field force along the direction double vibrations that is basically parallel to described casing bottom surface and make two elastic supporting member for supporting optical member that are positioned on opposing sidewalls be stretched accordingly and compress in vibration processes, also comprise protective device, described protective device is between described vibration component and described cover plate or between described vibration component and described casing bottom surface, to stop it directly to clash into described coil when described vibration component moves.
Described coil is positioned at described permanent magnet top and the described specific range of the described permanent magnet of distance; Described protective device comprises two quality guide vane end stops that are arranged on described vibrating mass upper surface, and the vertical distance of described quality guide vane end stop and described cover plate lower surface is less than the distance of described vibrating mass and described coil lower surface.
Described coil is positioned at below and the described specific range of the described permanent magnet of distance of described permanent magnet; Described protective device comprises two quality guide vane end stops that are arranged on described vibrating mass lower surface, and the vertical distance of described quality guide vane end stop and described casing bottom surface is less than the distance of described vibrating mass and described coil upper surface.
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 be not connected of described the first brace and described the second brace arranges and forms the 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.
On the inwall arranged in opposite directions of described the first brace and described the second brace, first stopper is installed respectively, at least one described first stopper, block rubber is installed.
Also comprise stopping means, described stopping means is between the sidewall of described coil and casing, when described vibration component vibrates, to stop described the first brace and described the second brace directly to clash into.
Described stopping means comprises the cover plate guide vane end stop that is arranged on described cover plate lower surface, described cover plate guide vane end stop and described quality guide vane end stop are in same level, and the horizontal range of described cover plate guide vane end stop and described quality guide vane end stop is less than the strain gap between described the first brace and described the second brace.
On the outer wall that interconnects part of described the first brace and described the second brace, the second stopper is installed.
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 the 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.
Have the spill mounting groove on described casing, it is interior and supported that the described lug boss of described insulation board is connected to described spill mounting groove.
Be filled with the magnetic liquid lubrication agent in the gap of the specific range formed between described permanent magnet and described coil.
Described permanent magnet is two, and its magnetic pole is over against described coil, and contrary over against the polarised direction of the described magnetic pole of coil.
Described vibrating mass has the installation through hole, and two described permanent magnets are arranged on respectively in described installation through hole and make its upper and lower surface substantially concordant with described vibrating mass.
Lower surface at described vibrating mass 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 between described vibration component and described cover plate or described vibration component and described casing bottom surface; to stop it directly to clash into described coil, thereby protected coil when described vibration component moves.
2. the slim flat linear type vibration motor that the utility model provides, it provides the protective device of two kinds of forms, when described coil is positioned at the top of described permanent magnet and distance during described permanent magnet specific range, described protective device comprises two quality guide vane end stops that are arranged on described vibrating mass upper surface, and the vertical distance of described quality guide vane end stop and described cover plate lower surface is less than the distance of described vibrating mass and described coil lower surface; When described coil is positioned at the below of described permanent magnet and distance during described permanent magnet specific range; Described protective device comprises two quality guide vane end stops that are arranged on described vibrating mass lower surface, and the vertical distance of described quality guide vane end stop and described casing bottom surface is less than the distance of described vibrating mass and described coil upper surface.When vibration component vibrates; it drives elastic supporting member for supporting optical member together along the direction linear vibration that is basically parallel to the casing bottom surface; due to the elastic supporting member for supporting optical member relative flexibility and under the weight impact of vibrating mass; also up-down vibration in carrying out above-mentioned linear vibration process, now, the quality guide vane end stop contacts with cover plate lower surface or casing bottom surface respectively; thereby avoided vibrating mass and coil directly to clash into; and then coil is protected, simultaneously, reduce noise.
3. 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, form the strain gap between the part do not connected of described the first brace and described the second brace, 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 universality preferably.
4. the slim flat linear type vibration motor that the utility model provides is installed respectively first stopper on the inwall arranged in opposite directions of described the first brace and described the second brace, at least one described 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 effect of collision at block rubber that produce, thereby improved the useful life of elastic supporting member for supporting optical member, also reduced noise.
5. the slim flat linear type vibration motor that the utility model provides, also comprise stopping means, described stopping means is between the sidewall of described coil and casing, described stopping means comprises the cover plate guide vane end stop that is arranged on described cover plate lower surface, described cover plate guide vane end stop and described quality guide vane end stop are in same level, and the horizontal range of described cover plate guide vane end stop and described quality guide vane end stop is less than the strain gap between described the first brace and described the second brace.When vibration component vibrates along the direction that is parallel to the casing bottom surface, the second brace of elastic supporting member for supporting optical member moves towards the direction near the first brace under the drive of vibration component, and make block rubber constantly compressed, because block rubber is softer, it can not send powerful noise in compressed process, now, the quality guide vane end stop is together motion also, because the horizontal range of described cover plate guide vane end stop and described quality guide vane end stop is less than the strain gap between described the first brace and described the second brace, so, in motion process, before reaching the deformation limit of block rubber, at first the quality guide vane end stop contacts with the cover plate guide vane end stop, thereby avoided the shock of described the first brace and the second brace, further reduced noise.
6. the slim flat linear type vibration motor that the utility model provides, install magnetic conductive board at the lower surface of described vibrating mass.By the 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 the casing bottom surface, improve magnetic field intensity thereby have to utilize, and then make the linear vibration motor there is larger amplitude.
7. the slim flat linear type vibration motor that the utility model provides, described coil is arranged on the top of described permanent magnet, this makes the lead end of coil to draw from the top of installing space easily, 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 the 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 and the welding of described insulation board, with after wire is electrically connected to, by binding post, with the grafting of user side mainboard, can realize being connected.In use, if damaging, vibrating motor needs repairing or while changing, the binding post be positioned on lug boss of vibrating motor is extracted and can be changed and keep in repair vibrating motor from the user side mainboard, and do not need to change the user side mainboard simultaneously, very convenient.
8. the slim flat linear type vibration motor that the utility model provides, be filled with the magnetic liquid lubrication agent in the gap with specific range formed between described permanent magnet and described coil.This kind of design further avoided vibration noise.
The accompanying drawing explanation
For the content that makes utility model is more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the casing of vibrating motor in embodiment 1 and the outside drawing after the cover plate installation;
Fig. 2 is the decomposition texture schematic diagram of the vibrating motor in Fig. 1;
Fig. 3 is the internal structure schematic diagram after vibrating motor removal cover plate, insulation board and coil in embodiment 1;
Fig. 4 is the internal structure schematic diagram after vibrating motor removal cover plate in embodiment 1;
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:
The 1-casing, 11-spill mounting groove, 12-the first side wall, 13-the second sidewall, 14-bottom surface, 15-rear wall; The 16-antetheca; The 2-cover plate, 21-cover plate jut; The 3-elastic supporting member for supporting optical member, 31-the first brace, 32-the second brace; 33-the first stopper; The 34-block rubber; 35-the second stopper; The 4-vibration component, the 41-vibrating mass; The 42-permanent magnet, 43-installs through hole; The 5-coil, the 51-square groove; 6-quality guide vane end stop; The 7-insulation board; The 71-lug boss; The 8-magnetic conductive board; 9-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 be 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, offer spill mounting groove 11 on described antetheca 16, 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 by described cover plate 2 with together with described casing 1 forms, form an installing space.
In described installing space, towards the direction of described cover plate 2, magnetic conductive board 8, vibration component 4, coil 5(coil 5 being installed successively from the bottom surface 14 of described casing 1 is connected with pcb board 7, and both are in same level), 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.The lower surface of described cover plate 2 is installed two cover plate guide vane end stops 9.
Particularly, described vibrating mass 41 has and 43, two permanent magnets 42 of through hole are installed are arranged on respectively in described installation through hole 43 and make its upper and lower surface substantially concordant with described vibrating mass 41, the top described permanent magnet 42 upper surface specified distance of distance of described permanent magnet 42 are equipped with coil 5, thereby form the gap with specific range between the lower surface of the upper surface of described permanent magnet 42 and described coil 5, be filled with the magnetic liquid lubrication agent in described gap, 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 7 that stretch out the coil 5 of square groove 51 weld together, specifically, described pcb board 7 has lug boss 71, described lug boss 71 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, be embedded with wire in described lug boss 71, be provided with binding post on described lug boss 71, the lug boss 71 of described lead end and pcb board 7 welds together, and an 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 the user side mainboard, only the binding post on lug boss 71 need to be plugged on the mainboard of user side and get final product, while when the vibrating motor damage, needing replacing and maintenance, 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 comprises that two quality guide vane end stop 6(that are arranged on described vibrating mass 41 upper surfaces as shown in Figure 2); described quality guide vane end stop 6 and described cover plate guide vane end stop 9 are in same level; and form horizontal range B(between the two as shown in Figure 6), the vertical distance of described quality guide vane end stop 6 and described cover plate 2 lower surfaces is less than the distance (as shown in Figure 6) of described vibrating mass 41 and described coil 5 lower surfaces.When vibration component 4 vibration; it drives elastic supporting member for supporting optical member 3 together along the direction linear vibration that is basically parallel to casing 1 bottom surface 14; due to elastic supporting member for supporting optical member 3 relative flexibilities and under the weight impact of vibrating mass 41; also up-down vibration in carrying out above-mentioned linear vibration process; now, under the effect of quality guide vane end stop 6, make quality guide vane end stop 6 at first contact with cover plate 2 lower surfaces; thereby avoided vibrating mass 41 and coil 5 directly to clash into, and then coil 5 is protected.
How the vibration component 4 illustrated 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 characteristics 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 arranges in opposite directions with the part be not connected of described the second brace 32, on the inwall arranged in opposite directions of described the first brace 31 and described the second brace 32, first stopper 33 is installed respectively, form strain gap A (seeing Fig. 6) between two the first stoppers 33, strain gap A between described the first brace 31 and described the second brace 32 is greater than the horizontal range B of described cover plate guide vane end stop 9 and described quality guide vane end stop 6, block rubber 34 is installed at least one described first stopper 33, 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, now, quality guide vane end stop 6 is together motion also, because the horizontal range B of described cover plate guide vane end stop 9 and described quality guide vane end stop 6 is less than the strain gap A between described the first brace 31 and described the second brace 32, so, in motion process, before the deformation limit that reaches block rubber 34, at first quality guide vane end stop 6 contacts with cover plate guide vane end stop 9, thereby avoided the shock of described the first brace 31 and the second brace 32, further reduced noise.
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 form strain gap A between the part do not connected.Due to described the first brace 31 and described the second brace 32 minutes, be connected again after body formed, 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, changed 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 universality preferably.
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 the compacting sintering form to make, can under very little volume, higher quality be arranged, thereby improve vibratory output.
Vibrating motor in the present embodiment, in order to realize frivolous purpose, in order to reach the purpose 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 formed 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 the electric current outside perpendicular to drawing, in Fig. 7, the magnetic field on the right produces perpendicular to drawing electric current inwards, simply illustrate each magnetic line of force direction in figure, 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 together is 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, be 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.
The present embodiment is the distortion on embodiment 1 basis, and the difference of itself and embodiment 1 is: in the present embodiment, described coil 5 is positioned at below and described permanent magnet 42 specific ranges of distance of described permanent magnet 42; Now, in order to play the protective effect to coil 5, at described vibrating mass 41 lower surfaces, two quality guide vane end stops 6 are installed, the vertical distance of described quality guide vane end stop 6 and described casing 1 bottom surface is less than the distance of described vibrating mass 41 and described coil 5 upper surfaces.
Above-mentioned embodiment just is explained in detail the technical solution of the utility model; the utility model has more than and only is 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. an improved 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), be suspended on the vibration component (4) in described installing space by the location that lays respectively at the elastic supporting member for supporting optical member (3) on (1) two opposing sidewalls of described casing, 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 coil (5) is installed, described vibration component (4) can be under the effect of magnetic field force along the direction double vibrations that is basically parallel to described casing (1) bottom surface and make two elastic supporting member for supporting optical member (3) that are positioned on opposing sidewalls be stretched accordingly and compress in vibration processes, it is characterized in that: also comprise protective device, described protective device be positioned between described vibration component (4) and described cover plate (2) or be positioned at described vibration component (4) and described casing (1) bottom surface between, to stop it directly to clash into described coil (5) when described vibration component (4) moves.
2. improved slim flat linear type vibration motor according to claim 1, it is characterized in that: described coil (5) is positioned at described permanent magnet (42) top and the described specific range of distance described permanent magnet (42); Described protective device comprises two quality guide vane end stops (6) that are arranged on described vibrating mass (41) upper surface, and the vertical distance of described quality guide vane end stop (6) and described cover plate (2) lower surface is less than the distance of described vibrating mass (41) and described coil (5) lower surface.
3. improved slim flat linear type vibration motor according to claim 1, it is characterized in that: described coil (5) is positioned at below and the described specific range of distance described permanent magnet (42) of described permanent magnet (42); Described protective device comprises two quality guide vane end stops (6) that are arranged on described vibrating mass (41) lower surface, and the vertical distance of described quality guide vane end stop (6) and described casing (1) bottom surface is less than the distance of described vibrating mass (41) and described coil (5) upper surface.
4. according to the described improved slim flat linear type vibration motor of claim 2 or 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 be not 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. improved slim flat linear type vibration motor according to claim 4, it is characterized in that: on the inwall arranged in opposite directions of described the first brace (31) and described the second brace (32), first stopper (33) is installed respectively, the upper block rubber (34) of installing of at least one described first stopper (33).
6. improved slim flat linear type vibration motor according to claim 5, it is characterized in that: also comprise stopping means, described stopping means is positioned between the sidewall of described coil (5) and casing (1), to stop described the first brace (31) and described the second brace (32) when described vibration component (4) vibrates, directly clashes into.
7. improved slim flat linear type vibration motor according to claim 6, it is characterized in that: described stopping means comprises the cover plate guide vane end stop (9) that is arranged on described cover plate (2) lower surface, described cover plate guide vane end stop (9) is with described quality guide vane end stop (6) in same level, and the horizontal range (B) of described cover plate guide vane end stop (9) and described quality guide vane end stop (6) is less than the strain gap (A) between described the first brace (31) and described the second brace (32).
8. improved slim flat linear type vibration motor according to claim 7, 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.
9. improved slim flat linear type vibration motor according to claim 2, it is characterized in that: described coil (5) connects insulation board (7) and is positioned at same level with it, described insulation board (7) has the lug boss (71) that protrudes from from the side described installing space, the binding post of pegging graft with the user side mainboard is installed on described lug boss (71), the inside of described insulation board (7) 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. improved slim flat linear type vibration motor according to claim 9, it is characterized in that: described insulation board (7) is pcb board.
11. improved slim flat linear type vibration motor according to claim 10, it is characterized in that: have spill mounting groove (11) on described casing (1), it is interior and supported that the described lug boss (71) of described insulation board (7) is connected to described spill mounting groove (11).
12., according to the described improved slim flat linear type vibration motor of claim 11, it is characterized in that: in the gap of the specific range formed between described permanent magnet (42) and described coil (5), be filled with the magnetic liquid lubrication agent.
13., according to the described improved slim flat linear type vibration motor of claim 12, it is characterized in that: described permanent magnet (42) is two, its magnetic pole 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 described improved slim flat linear type vibration motor of claim 13, it is characterized in that: described vibrating mass (41) has the installation through hole, and two described permanent magnets (42) are arranged on respectively in described installation through hole (43) and make its upper and lower surface substantially concordant with described vibrating mass (41).
15., according to the described slim flat linear type vibration motor of any one in claim 1-3, it is characterized in that: described vibrating mass (41) adopts density to be greater than 17g/cm
3the heavy alloy manufacture form.
16. improved slim flat linear type vibration motor, is characterized in that: at the lower surface installation magnetic conductive board (8) of described vibrating mass (41) according to claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492350.5U CN203377766U (en) | 2013-08-13 | 2013-08-13 | An improved thin flat linear vibration motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492350.5U CN203377766U (en) | 2013-08-13 | 2013-08-13 | An improved thin flat linear vibration motor |
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| Publication Number | Publication Date |
|---|---|
| CN203377766U true CN203377766U (en) | 2014-01-01 |
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| CN201320492350.5U Expired - Fee Related CN203377766U (en) | 2013-08-13 | 2013-08-13 | An improved thin flat linear vibration motor |
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| Country | Link |
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| CN (1) | CN203377766U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401394A (en) * | 2013-08-13 | 2013-11-20 | 金龙机电股份有限公司 | Improved thin flat linear vibration motor |
| CN105790541A (en) * | 2016-03-11 | 2016-07-20 | 歌尔声学股份有限公司 | 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
- 2013-08-13 CN CN201320492350.5U patent/CN203377766U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401394A (en) * | 2013-08-13 | 2013-11-20 | 金龙机电股份有限公司 | Improved thin flat linear vibration motor |
| CN105790541A (en) * | 2016-03-11 | 2016-07-20 | 歌尔声学股份有限公司 | Linear vibration motor |
| CN105790541B (en) * | 2016-03-11 | 2019-01-15 | 歌尔股份有限公司 | A kind of 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| IP01 | Partial invalidation of patent right | ||
| IP01 | Partial invalidation of patent right |
Commission number: 5W110430 Conclusion of examination: It is declared that utility model 201320492350.5 is partially invalid, and the patent will remain valid on the basis of amended claims 1-10 submitted by the patentee on September 29, 2016. Decision date of declaring invalidation: 20170303 Decision number of declaring invalidation: 31545 Denomination of utility model: Improved thin flat linear vibration motor Granted publication date: 20140101 Patentee: JINLONG MACHINERY AND ELECTRONICS Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20210813 |