CN205231985U - Linear vibration motor - Google Patents
Linear vibration motor Download PDFInfo
- Publication number
- CN205231985U CN205231985U CN201520934877.8U CN201520934877U CN205231985U CN 205231985 U CN205231985 U CN 205231985U CN 201520934877 U CN201520934877 U CN 201520934877U CN 205231985 U CN205231985 U CN 205231985U
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- Prior art keywords
- balancing weight
- linear vibration
- electric motor
- coil
- vibration electric
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- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The utility model discloses a linear vibration motor, including combine lid and casing together, vibration system and stator system have been accommodated in the airtight space that lid and casing formed, vibration system includes magnet subassembly and balancing weight, the external circuit's in connecting of stator system conducting wire board and coil, the magnet subassembly includes two independent magnetization opposite direction's permanent magnet, the magnet subassembly passes the coil, and both ends are fixed on the balancing weight respectively, the coil suspension is in the intermediate position of balancing weight, two distolateral elastic support elements that combine to have support and vibration system respectively of balancing weight, the coil is fixed with conducting wire board spot welding, the conducting wire board bonds fixedly with the casing. The utility model discloses a linear vibration motor, that can improve the coil effectively utilizes length to overturn in the time of can effectively preventing the oscillator vibration, simple structure easily realizes.
Description
Technical field
The utility model relates to electroacoustic field, is specifically related to a kind of linear vibration electric motor.
Background technology
Current, portable mobile communication terminal device has become people's daily life and the requisite instrument of work, wherein a function the most basic realizes interpersonal instant messaging exactly, in this course, the user of mobile communication terminal device inevitably becomes called object.Generally, called avatar comprises again auditory tone cues and vibration prompt two kinds, vibration prompt function both effectively can point out user by producing vibration signal in the environment of noise and excitement, the function of instant alerts can be realized again in office spaces such as the meeting rooms of solemn solemn silence simultaneously, thus the function that mobile communication terminal device is indispensable is become, and study carefully the realization of its function, then mainly realized by the vibrating motor be arranged in mobile communication terminal device.
Vibrating motor comprises linear vibration electric motor, and namely the direction of vibration of oscillator is the reciprocating motion of straight line, generally includes upper casing and lower casing, in the seal cavity that upper casing and lower casing are formed jointly, accommodate vibrational system and stator system.For the linear vibration electric motor of rectangular configuration, the direction of definition motor major axis be X to, the direction of motor minor axis is Y-direction, existing linear vibration electric motor is upper vibration in X direction mostly, in order to prevent overturning during oscillator vibration, a kind of way of the prior art is, coil is arranged on the bottom of vibrational system, the two ends spring of vibrational system is as elastic supporting member for supporting optical member, and centre is worn axle and is fixed, the linear vibration electric motor of this structure, its both sides can utilize magnetic balance to reach the effect preventing oscillator from overturning, but structure is comparatively complicated.Application number is that CN200910173756.5 patent discloses a kind of linear vibration electric motor, one end of its magnet is inserted in the inner space of coil, the side of balancing weight is provided with yoke-like body, spring is provided with between yoke-like body and peripheral frame, with this, balancing weight is fixed, and by having the bearing of sphere, minimize the friction with housing, solve the problem of wearing and tearing between parts targetedly, but for preventing oscillator from overturning not good effect.Therefore, binding site and mode etc. between being necessary each parts of linear vibration electric motor make further improvement, make it under the prerequisite of simplified structure, effectively prevent oscillator from overturning.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of linear vibration electric motor, improves the mode etc. that the position of coil, coil are combined with magnet, and effectively to prevent oscillator from overturning, and structure is simple, is convenient to realize.
To achieve these goals, the utility model by the following technical solutions: a kind of linear vibration electric motor, comprises the lid and housing that combine; Contain vibrational system and stator system in the confined space that described lid and described housing are formed, described vibrational system comprises magnet assembly and balancing weight; Described stator system comprises the conducting wire plate and coil that connect peripheral circuits, and wherein, described magnet assembly comprises two pieces of permanent magnets that independently direction of magnetization is contrary; Described magnet assembly is through described coil, and two ends are separately fixed on described balancing weight; Described coil is suspended in the centre position of described balancing weight; Two sides of described balancing weight are combined with the elastic supporting member for supporting optical member supporting described vibrational system respectively; Described coil and the plate spot welding of described conducting wire are fixed; Described conducting wire plate and described housing bond fixing.
Improve as one, described linear vibration electric motor is rectangular configuration; The two pieces of permanent magnets forming described magnet assembly are respectively the first permanent magnet and the second permanent magnet; Described first permanent magnet and described second permanent magnet are arranged in order along the long axis direction of described linear vibration electric motor; Described first permanent magnet is contrary with the magnetizing direction of described second permanent magnet.
Improve as one, between described first permanent magnet and described second permanent magnet, be fixed with a spacer block; Described spacer block is made up of permeability magnetic material.
Improve as one, described spacer block is SUS430 stainless steel.
Improve as one, described balancing weight is provided with the through hole of vertical through described balancing weight; Described magnet assembly is fixed in described through hole, and two ends bond fixing respectively with described balancing weight; Described coil embeds from one end of described magnet assembly, is incorporated into the centre position of described magnet assembly; The aperture of described through hole mid portion is greater than the aperture in the region near end, to dodge described coil.
Improve as one, described balancing weight is non-magnet material, can select tungsten steel block or tungsten alloy.
Improve as one, described magnet assembly and described balancing weight are suspended in the airtight accommodation space that described lid and described housing formed by described elastic supporting member for supporting optical member.
Improve as one, described elastic supporting member for supporting optical member comprises the elasticity arm of bending; Two ends of described elasticity arm are respectively the first contact jaw and second contact jaw fixing with described housing laser welding fixed with described balancing weight laser welding.
Improve as one, the inner side of described first contact jaw and described second contact jaw is combined with stiffener respectively; Cushion pad is provided with between described stiffener; The guide vane end stop limiting described balancing weight motion amplitude is also provided with between described cushion pad and described second contact jaw; Described guide vane end stop and described housing are fixed by laser welding.
Improve as one, described elastic supporting member for supporting optical member is stainless steel.
Compared to existing technologies, linear vibration electric motor of the present utility model, permanent magnet is through the inner space of coil, two ends are fixed on balancing weight, and the two ends of balancing weight support fixing by elastic supporting member for supporting optical member, and this kind of structural design makes that coil is Embedded is arranged on centre position, what improve coil effectively utilizes length, structure is comparatively simple, is convenient to realize, and can effectively prevents it from overturning.
Accompanying drawing explanation
Fig. 1 is the explosive view of the utility model linear vibration electric motor structure;
Fig. 2 is the vertical view of the utility model linear vibration electric motor structure;
Fig. 3 is the upward view of the utility model linear vibration electric motor structure;
Fig. 4 is the cutaway view of the utility model vibrating motor structure;
Fig. 5 is the utility model linear vibration electric motor operation principle schematic diagram based on Fig. 4;
Reference numeral wherein comprises: 1, lid, and 2, housing, 3, balancing weight, 31, through hole, 4, magnet assembly, the 41, first permanent magnet, 42, the second permanent magnet, 5, coil, 6, conducting wire plate, 7, elastic supporting member for supporting optical member, the 71, first contact jaw, the 72, second contact jaw, 73, elasticity arm, 8, guide vane end stop, 9, stiffener, 10, cushion pad, 11, spacer block.
Embodiment
Below in conjunction with accompanying drawing, describe the utility model content in detail:
Embodiment:
Consult Fig. 1, Fig. 2, Fig. 3 and Fig. 4 jointly shown in, linear vibration electric motor of the present utility model comprises lid 1 and housing 2, wherein, lid 1 comprise a substrate and from four sides of substrate to the vertically extending sidewall in direction of housing 2, housing 2 comprises a diapire, punch forming, lid 1 and housing 2 cooperatively interact, the spatial accommodation of common formation sealing, vibrational system and stator system is contained in this spatial accommodation, wherein, vibrational system comprises balancing weight 3 and magnet assembly 4, the effect of balancing weight 3 strengthens vibration force, make vibration more strong, it should be non-magnetic material, and thickness gets over Bao Yuehao, be preferably tungsten steel block, this is because the density ratio of tungsten steel block is larger, and low price, also can adopt tungsten alloy material to replace, stator system then comprises the coil 5 and conducting wire plate 6 that connect peripheral circuits, and wherein, conducting wire plate 6 is shaping separately, is fixed on the upper surface of housing 2 by being coated with glue bond.
Consult Fig. 2 and Fig. 3 jointly shown in, linear vibration electric motor of the present utility model is rectangular configuration, coil 5 is no longer positioned at the below of magnet assembly 4, specifically, in the present embodiment, magnet assembly 4 comprises two pieces of independently permanent magnets, be respectively the first permanent magnet 41 and the second permanent magnet 42, as shown in Figure 5, first permanent magnet 41 is contrary with the magnetizing direction of the second permanent magnet 42, and (the first permanent magnet 41 is for magnetize from its right-hand member to left end, second permanent magnet 42 is then for magnetizing from its left end to right-hand member), repel each other along assembly direction; In present embodiment, magnet assembly 4 with the Position Design of coil 5 is: magnet assembly 4 is through described coil, and the first permanent magnet 1 and the second permanent magnet 2 are arranged in order along the long axis direction of linear vibration electric motor, that is, the inner space of the lucky thorough coil 5 of mid portion of magnet assembly 4; In addition, the left end of the first permanent magnet 1 and the right-hand member of the second permanent magnet 2 are separately fixed on balancing weight 3, and coil 5 then embeds from one end of magnet assembly 4, is suspended in the centre position of balancing weight 3, and is connected by spot welding with conducting wire plate 6; Balancing weight 3 is correspondingly provided with the through hole 31 of vertically its inside through, magnet assembly 4 is fixed in through hole 31, the centre position being incorporated into magnet assembly 4 because coil 5 is embedded, therefore the aperture of through hole 31 mid portion needs the aperture in the region be greater than near end, to dodge coil 5.
In order to make the magnetic line of force more intensive, be fixed with one every fast 11 between the first permanent magnet 4 and the second permanent magnet 5, be required to be permeability magnetic material every fast 11 and make, SUS430 stainless steel can be used as one of selection.
In order to support the motion of vibrational system, two sides of balancing weight 4 are combined with elastic supporting member for supporting optical member 7 respectively, such magnet assembly 4 is fixed on balancing weight 3, and balancing weight 3 is combined with elastic supporting member for supporting optical member 7, vibrational system is suspended in the airtight accommodation space of lid 1 and housing 2 formation by elastic supporting member for supporting optical member 7.
Elastic supporting member for supporting optical member 7 specifically comprises the elasticity arm 73 of bending, elasticity arm 73 has the strain space being parallel to linear vibration electric motor major axis, its end is two contact jaws combined with miscellaneous part, first contact jaw 71 is fixed by laser welding with balancing weight 3, second contact jaw 72 is fixed by laser welding with housing 2, because elastic supporting member for supporting optical member 7 itself is thinner, in order to improve weld strength, the inner side of the first contact jaw 71 and the second contact jaw 72 is combined with stiffener 9 respectively, and between two stiffeners 9, be provided with cushion pad 10, cushion pad 10 mainly plays damping action herein, prevent very stiff and demanding phenomenon from occurring, generally silicagel pad can be adopted.
In addition, in order to limit the amplitude of balancing weight 3, be provided with guide vane end stop 8 between cushion pad 10 and the second contact jaw 72, guide vane end stop 8 and housing 2 are fixed by laser welding.It should be noted that, what mainly utilize due to linear vibration electric motor of the present utility model is the pole parts that magnet assembly 4 is positioned at coil 5 inner space, thus the elastic supporting member for supporting optical member 7 in present embodiment can adopt non-magnetic material with guide vane end stop 8, also can adopt the magnetic conductive materials such as stainless steel.
Elaborate the connected mode etc. between the structure of the utility model linear vibration electric motor and parts above, the operation principle below in conjunction with accompanying drawing 5 pairs of the utility model linear vibration electric motors is described:
For convenience of explanation, Fig. 5 carries out operation principle signal based on Fig. 4, linear vibration electric motor of the present utility model is along long axis direction (X to) motion, Fig. 4 is the generalized section of the long axis direction (X to) along linear vibration electric motor, and thus in Fig. 5, the left-hand of arrows and dextrad can be considered the direction of vibration of vibrational system.Specifically, coil 5 obtains alternating current by conducting wire plate 6 from outside, electric current flows along the direction of coil 5 coiling, coil 5 is considered as upper ring and a lower ring, when a certain moment, assuming that the sense of current in coil 5 is as shown in FIG., namely the sense of current of pressed on ring be vertical view towards inner, correspondingly in accompanying drawing to be denoted as
the sense of current of lower ring is that vertical view is towards outward, correspondingly in accompanying drawing be denoted as ⊙, in accompanying drawing, the magnetic line of force direction at each ring position place is simply illustrated, according to left hand rule (Ampere's law), the magnetic field force direction that upper ring and a lower ring is subject to is identical, indicate with F1 in figure, direction to the right, in theory, coil 5 should move right, but because the spot welding of coil 5 own is fixed on conducting wire plate 6, himself can not move, according to the relation (equal and opposite in direction of active force and reaction force, direction is contrary), two parts magnet of magnet assembly 4 is subject to the active force of F1 ', and direction left, comprehensive above-mentioned explanation is known, the reaction force direction that magnet assembly 4 is subject to left, in addition magnet assembly 4 bonding is fixed on balancing weight 3, together be suspended above in airtight spatial accommodation, and the strain direction of the elasticity arm 73 of elastic supporting member for supporting optical member 7 is parallel to the major axis (X to) of linear vibration electric motor, therefore, magnet assembly 4 and balancing weight 3 are together under the action of a magnetic force along X to left movement, when the sense of current passed through in coil 5 changes, so magnet assembly 4 and balancing weight 3 together move round about, with this formed along X to bilateral reciprocation.
These are only the utility model case study on implementation, be not limited to the utility model, as long as those of ordinary skill in the art modify or change according to the equivalence that the utility model institute disclosure is done, all should include in the protection range recorded in claims.
Claims (10)
1. a linear vibration electric motor, comprises the lid and housing that combine; Contain vibrational system and stator system in the confined space that described lid and described housing are formed, described vibrational system comprises magnet assembly and balancing weight; Described stator system comprises the conducting wire plate and coil that connect peripheral circuits, it is characterized in that: described magnet assembly comprises two pieces of permanent magnets that independently direction of magnetization is contrary; Described magnet assembly is through described coil, and two ends are separately fixed on described balancing weight; Described coil is suspended in the centre position of described balancing weight; Two sides of described balancing weight are combined with the elastic supporting member for supporting optical member supporting described vibrational system respectively; Described coil and the plate spot welding of described conducting wire are fixed; Described conducting wire plate and described housing bond fixing.
2. linear vibration electric motor according to claim 1, is characterized in that: described linear vibration electric motor is rectangular configuration; The two pieces of permanent magnets forming described magnet assembly are respectively the first permanent magnet and the second permanent magnet; Described first permanent magnet and described second permanent magnet are arranged in order along the long axis direction of described linear vibration electric motor; Described first permanent magnet is contrary with the magnetizing direction of described second permanent magnet.
3. linear vibration electric motor according to claim 2, is characterized in that: be fixed with a spacer block between described first permanent magnet and described second permanent magnet; Described spacer block is made up of permeability magnetic material.
4. linear vibration electric motor according to claim 3, is characterized in that: described spacer block is SUS430 stainless steel.
5. linear vibration electric motor according to claim 1, is characterized in that: the through hole described balancing weight being provided with vertical through described balancing weight; Described magnet assembly is fixed in described through hole, and two ends bond fixing respectively with described balancing weight; Described coil embeds from one end of described magnet assembly, is incorporated into the centre position of described magnet assembly; The aperture of described through hole mid portion is greater than the aperture in the region near end, to dodge described coil.
6. linear vibration electric motor according to claim 5, is characterized in that: described balancing weight is non-magnet material, can select tungsten steel block or tungsten alloy.
7. linear vibration electric motor according to claim 1, is characterized in that: described magnet assembly and described balancing weight are suspended in the airtight accommodation space that described lid and described housing formed by described elastic supporting member for supporting optical member.
8. linear vibration electric motor according to claim 7, is characterized in that: described elastic supporting member for supporting optical member comprises the elasticity arm of bending; Two ends of described elasticity arm are respectively the first contact jaw and second contact jaw fixing with described housing laser welding fixed with described balancing weight laser welding.
9. linear vibration electric motor according to claim 8, is characterized in that: the inner side of described first contact jaw and described second contact jaw is combined with stiffener respectively; Cushion pad is provided with between described stiffener; The guide vane end stop limiting described balancing weight motion amplitude is also provided with between described cushion pad and described second contact jaw; Described guide vane end stop and described housing are fixed by laser welding.
10. linear vibration electric motor according to claim 8, is characterized in that: described elastic supporting member for supporting optical member is stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520934877.8U CN205231985U (en) | 2015-07-31 | 2015-11-20 | Linear vibration motor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520574412 | 2015-07-31 | ||
| CN2015205744126 | 2015-07-31 | ||
| CN201520934877.8U CN205231985U (en) | 2015-07-31 | 2015-11-20 | Linear vibration motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205231985U true CN205231985U (en) | 2016-05-11 |
Family
ID=55907027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520934877.8U Expired - Fee Related CN205231985U (en) | 2015-07-31 | 2015-11-20 | Linear vibration motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205231985U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208602A (en) * | 2016-07-28 | 2016-12-07 | 深圳市信维通信股份有限公司 | Linear vibration motor |
| CN109309892A (en) * | 2018-10-16 | 2019-02-05 | 歌尔股份有限公司 | Electromagnetic driver and screen sounding device |
| CN109672316A (en) * | 2018-04-30 | 2019-04-23 | 天津富禄通信技术有限公司 | Quadrangle vertical vibration motor |
| CN110113696A (en) * | 2019-04-23 | 2019-08-09 | 歌尔股份有限公司 | Vibration-sound generating device and electronic product |
-
2015
- 2015-11-20 CN CN201520934877.8U patent/CN205231985U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208602A (en) * | 2016-07-28 | 2016-12-07 | 深圳市信维通信股份有限公司 | Linear vibration motor |
| CN109672316A (en) * | 2018-04-30 | 2019-04-23 | 天津富禄通信技术有限公司 | Quadrangle vertical vibration motor |
| CN109672316B (en) * | 2018-04-30 | 2024-03-29 | 天津富禄通信技术有限公司 | Four-corner vertical vibration motor |
| CN109309892A (en) * | 2018-10-16 | 2019-02-05 | 歌尔股份有限公司 | Electromagnetic driver and screen sounding device |
| CN109309892B (en) * | 2018-10-16 | 2022-07-19 | 歌尔股份有限公司 | Electromagnetic exciter and screen sounding device |
| CN110113696A (en) * | 2019-04-23 | 2019-08-09 | 歌尔股份有限公司 | Vibration-sound generating device and electronic product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |
|
| 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: 20160511 Termination date: 20191120 |