CN211352009U - Vibration exciter and electronic equipment - Google Patents
Vibration exciter and electronic equipment Download PDFInfo
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- CN211352009U CN211352009U CN202020052972.6U CN202020052972U CN211352009U CN 211352009 U CN211352009 U CN 211352009U CN 202020052972 U CN202020052972 U CN 202020052972U CN 211352009 U CN211352009 U CN 211352009U
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Abstract
The application provides a vibration exciter and electronic equipment, including shell, vibration subassembly, fixed subassembly and centering branch piece, wherein: the vibration assembly is arranged in the shell and comprises a vibrator, the top of the vibrator is used for being connected with a screen, and a permanent magnet is fixed at the bottom of the vibrator; the fixing component is arranged in the shell and comprises a supporting piece fixed with the shell, a coil fixed on the supporting piece and an iron core sleeved in the coil, and the iron core is positioned right above the permanent magnet; alternating current is introduced into the coil; the centering support piece is arranged at the top of the vibrator, connected with the vibration assembly and the shell and used for keeping the vibration direction of the vibrator perpendicular to the screen. The magnetic induction motor has the advantages that the structural design is simple, the manufacturing cost is low, the magnetic induction intensity of the iron core is high after the iron core is magnetized, and the iron core and the permanent magnet can generate large repulsive force and attractive force to provide large driving force.
Description
Technical Field
The present application relates to the field of electromagnetic vibration technology, and in particular, to a vibration exciter and an electronic device based on the vibration exciter.
Background
In order to improve the color value and the technological sense of the mobile phone, a comprehensive screen design is more and more favored, but the mobile phone in the current world is difficult to realize a real comprehensive screen design, mainly because the front of the mobile phone relates to the design of a sound outlet of a receiver, and therefore the traditional receiver is cancelled to become a development trend.
In some other solutions, there are also electromagnetic actuators arranged on the screen, which generally use the ampere rule. However, the existing exciter has a complex structure, low magnetic field utilization efficiency, high power consumption and small driving force, and in order to increase the driving force, the number of magnets and the number of turns of a coil can be increased according to the ampere rule, which causes the material cost of a product to be increased and reduces the competitiveness of the product.
SUMMERY OF THE UTILITY MODEL
The present application provides a vibration exciter and an electronic device based on the vibration exciter, which can drive a screen to vibrate and radiate sound to overcome the above problems.
In order to solve the above problem, the present application discloses a vibration exciter, including a housing, a vibration component, a fixing component, and a centering chip, wherein:
the vibration assembly is arranged in the shell and comprises a vibrator, the top of the vibrator is used for being connected with a screen, and a permanent magnet is fixed at the bottom of the vibrator;
the fixing component is arranged in the shell and comprises a supporting piece fixed with the shell, a coil fixed on the supporting piece and an iron core sleeved in the coil, and the iron core is positioned right above the permanent magnet;
when alternating current is introduced into the coil, repulsive force and attractive force which are changed alternately constantly are generated between the magnetized iron core and the permanent magnet, and the permanent magnet drives the vibrator to vibrate in the direction vertical to the screen under the action of the repulsive force and the attractive force which are changed alternately constantly;
the centering support piece is arranged at the top of the vibrator, connected with the vibration assembly and the shell and used for keeping the vibration direction of the vibrator perpendicular to the screen.
Optionally, the permanent magnet includes a first permanent magnet and a second permanent magnet, and the first permanent magnet and the second permanent magnet are axisymmetrical with respect to a central axis of the vibrator;
the support piece is a T-shaped column, the upper end of the T-shaped column penetrates through the bottom of the vibrator and is arranged in the vibrator, and the lower end of the T-shaped column is vertically fixed with the bottom surface of the shell;
the coils comprise a first coil and a second coil, and the first coil and the second coil are axisymmetrical about a central axis of the T-shaped column;
the iron core comprises a first iron core and a second iron core, the first iron core is sleeved in the first coil, and the second iron core is sleeved in the second coil.
Optionally, a boss with adjustable height is arranged at the top of the vibrator, and the top surface of the boss is connected with the screen.
Optionally, the centering branch piece is provided with a limiting opening, and the limiting opening is sleeved outside the boss.
Optionally, the permanent magnet is made of a rare earth permanent magnet material.
Optionally, the iron core is made of a soft magnetic material.
In order to solve the above problem, the present application also discloses an electronic device, including:
a screen; and
a vibration exciter as described herein disposed below the screen; the vibration direction of the vibration exciter is perpendicular to the screen.
Compared with the prior art, the method has the following advantages:
the application provides a vibration exciter with different working principles, which comprises a shell, a vibration assembly, a fixing assembly and a centering support piece, wherein the vibration assembly is arranged in the shell and comprises a vibrator, the top of the vibrator is used for being connected with a screen, and a permanent magnet is fixed at the bottom of the vibrator; the fixing component is arranged in the shell and comprises a supporting piece fixed with the shell, a coil fixed on the supporting piece and an iron core sleeved in the coil, and the iron core is positioned right above the permanent magnet; when alternating current is introduced into the coil, repulsive force and attractive force which are changed alternately constantly are generated between the magnetized iron core and the permanent magnet, and the permanent magnet drives the vibrator to vibrate in the direction vertical to the screen under the action of the repulsive force and the attractive force which are changed alternately constantly; the centering support piece is arranged at the top of the vibrator, connected with the vibration assembly and the shell and used for keeping the vibration direction of the vibrator perpendicular to the screen. The scheme of the vibration exciter has simple structure design and lower manufacturing cost, and the iron core has higher magnetic induction intensity after being magnetized, and can generate larger repulsive force and attractive force with the permanent magnet to provide larger driving force. The centering support piece can avoid the vibrator from deviating from the vibration direction due to overlarge vibration amplitude or external factors in the movement process, so that the vibration force of the screen is unbalanced and the sounding is influenced.
Drawings
FIG. 1 is a schematic diagram of an exemplary configuration of a first embodiment of a vibration exciter of the present application;
FIG. 2 is a schematic structural diagram of a second embodiment of a vibration exciter of the present application;
FIG. 3 is an exploded view of a second embodiment of a vibration exciter of the present application;
FIG. 4 is a top plan view along the long axis of a second embodiment of a vibration exciter of the present application;
FIG. 5 is a schematic structural diagram of a vibration assembly of a second embodiment of a vibration exciter of the present application;
fig. 6 is a schematic structural diagram of a fixing assembly of a second embodiment of the vibration exciter according to the present invention.
Description of reference numerals:
the device comprises a shell, a vibrating component, a fixing component, a centering supporting piece, a vibrator, a permanent magnet, a boss, a through hole, a supporting piece, a coil, a core and a limiting port, wherein the shell is 1, the vibrating component is 2, the fixing component is 3, the centering supporting piece is 4, the vibrator is 201, the permanent magnet is 202, the boss is 203, the through hole is 204, the supporting piece is 301, the coil.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.
The first embodiment is as follows:
to the technical problem of the utility model, this application embodiment provides a vibration exciter, including shell 1, vibration subassembly 2, fixed subassembly 3 and centering support piece 4, wherein: the vibration assembly 2 is arranged in the shell 1 and comprises a vibrator 201, the top of the vibrator 201 is used for being connected with a screen, and a permanent magnet 202 is fixed at the bottom of the vibrator 201; the fixing component 3 is arranged in the housing 1, and includes a supporting member 301 fixed with the housing 1, a coil 302 fixed on the supporting member 301, and an iron core 303 sleeved in the coil 302, wherein the iron core 303 is located right above the permanent magnet 202; when alternating current is introduced into the coil 302, repulsive force and attractive force which are changed alternately constantly are generated between the magnetized iron core 303 and the permanent magnet 202, and the permanent magnet 202 drives the vibrator 201 to vibrate in a direction perpendicular to the screen under the action of the repulsive force and the attractive force which are changed alternately constantly; the centering support piece 4 is arranged on the top of the vibrator 201, connected with the vibration component 2 and the shell 1, and used for keeping the vibration direction of the vibrator 201 perpendicular to the screen.
In the embodiment of the present application, the housing 1 is a shell structure having an internal cavity, and the material thereof is metal, plastic, ceramic, glass, or the like. The fixed component 3 and the vibrating component 2 are both positioned in the cavity, and the top of the vibrator 201 can be partially arranged outside the cavity so as to be connected with a screen conveniently, and can also be connected with the screen through other intermediate parts. The bottom of the vibrator 201 is fixed with a permanent magnet 202, and the permanent magnet 202 can be fixed at the bottom of the vibrator 201 by adopting bonding, welding or clamping and the like, so as to drive the vibrator 201 to synchronously vibrate up and down when receiving repulsive force and attractive force which change alternately. The permanent magnet 202 of the embodiment of the application is made of rare earth permanent magnet material, preferably, the permanent magnet 202 is made of any one of ferrite, neodymium iron boron and aluminum nickel cobalt.
The supporting member 301 in the fixing assembly 3 according to the embodiment of the present application may be disposed along the vibration direction of the vibrator 201, or may be disposed vertically along the vibration direction of the vibrator 201. When the supporting member 301 is disposed along the vibration direction of the vibrator 201, the supporting member 301 may be fixed to the bottom of the case 1; when the supporting member 301 is vertically disposed along the vibration direction of the vibrator 201, the supporting member 301 may be fixed to the inner sidewall of the case 1. In any arrangement mode, it is only required to ensure that the coil 302 with the iron core 303 is arranged right above the permanent magnet 202, so that when alternating current is introduced into the coil 302, under the magnetic effect of the current, according to the right-hand rule, the iron core 303 is magnetized to generate an N-pole magnetic field and an S-pole magnetic field which are continuously alternated, and an attraction force and a repulsion force which are continuously alternated are generated for the permanent magnet 202 with the same polarity, so that the permanent magnet 202 is driven to vibrate, and the vibrator 201 is driven to vibrate. The iron core 303 of this application embodiment is made of soft magnetic material, and is preferred, iron core 303 adopts pure iron or silicon steel to make.
The centring disk 4 of the embodiment of the application can be a frame structure, and when the vibration component 2 further comprises a mounting part which does not influence the vibration of the vibrator 201, a plurality of screw holes can be arranged on the centring disk 4, and the mounting part and the shell 1 of the centring disk 4 and the vibration component 2 can be respectively fixed by adopting screws through the screw hole arrangement at different positions. The centering branch piece 4 can also be provided with a limiting opening 401, the oscillator 201 or an intermediate part at the top of the oscillator 201 is sleeved by the limiting opening 401, and then the centering branch piece 4 is fixed with the shell 1, so that the vibration direction of the oscillator 201 can be kept to be vertical to the screen.
In the embodiment of the present application, the number of the vibrator 201, the permanent magnet 202, the coil 302, and the iron core 303 may be one or more, such as two (referring to the embodiment, an axisymmetric structure is formed), and four (a centrosymmetric structure is also possible). The embodiments of the present application do not limit the shapes of the vibrator 201 and the permanent magnet 202, and all the objects of the present application can be achieved within the scope of the present application.
Referring to fig. 1, there is shown an exemplary structural schematic diagram of a first embodiment of a vibration exciter of the present application; in fig. 1, the vibrator comprises a housing 1, a vibrator 201 is a cylinder, a cavity is formed in the vibrator 201, a permanent magnet 202, a coil 302 and an iron core 303 are all located in the vibrator 201, the number of the permanent magnet 202 is one, the permanent magnet 202 is installed at the bottom of the vibrator 201, and the iron core 303 is sleeved in the coil 302 and located right above the permanent magnet 202. Two through holes 204 are formed in the bottom of the vibrator 201, the supporting piece 301 is a Y-shaped supporting rod, two mutually symmetrical supporting legs of the Y-shaped supporting rod respectively penetrate through the two through holes 204 to be fixed with the bottom of the shell 1, and the top of the Y-shaped supporting rod is fixed with the iron core 303. The top portion of the vibrator 201 is placed on top of the housing 1 for vibrating the screen. The centering branch piece 4 is sleeved on the top of the vibrator 201 and fixed with the shell 1 through modes such as adhesion or bolts. In fig. 1, the coil 302 is connected to a lead (not shown in fig. 1) through which an alternating current flows, and a slot (not shown in fig. 1) for routing the lead through which the alternating current flows is also reserved in the case 1 or the vibrator 201, so that the coil 302 is electrically connected to the alternating current outside the vibration exciter.
The electromagnetic vibration exciter has the advantages that the scheme structure design is simple, the manufacturing cost is low, the magnetic induction intensity of the iron core 303 is high after the iron core is magnetized, and the iron core 303 and the permanent magnet 202 can generate large repulsive force and attractive force to provide large driving force. In addition, the centering support 4 of the present application can avoid the problem that the vibration force of the screen is unbalanced and the sounding is affected due to the fact that the vibrator 201 deviates from the vibration direction due to too large vibration amplitude or external factors (such as external magnetic field of the interference permanent magnet 202) in the movement process.
Example two:
referring to fig. 2, on the basis of the first embodiment, a structural schematic diagram of a second embodiment of the vibration exciter of the present application is shown, where the permanent magnet 202 includes a first permanent magnet 202 and a second permanent magnet 202, and the first permanent magnet 202 and the second permanent magnet 202 are axisymmetrical with respect to a central axis of the vibrator 201; the supporting piece 301 is a T-shaped column, the upper end of the T-shaped column penetrates through the bottom of the vibrator 201 and is arranged in the vibrator 201, and the lower end of the T-shaped column is vertically fixed with the bottom surface of the shell 1; the coils 302 comprise a first coil 302 and a second coil 302, and the first coil 302 and the second coil 302 are axisymmetrical with respect to a central axis of the T-shaped column; the iron core 303 includes a first iron core 303 and a second iron core 303, the first iron core 303 is sleeved in the first coil 302, and the second iron core 303 is sleeved in the second coil 302. For further explanation of the present application, reference is made to fig. 3, which shows an exploded view of a second embodiment of a vibration exciter of the present application; referring to fig. 4, a top view along the long axis of a second embodiment of a vibration exciter of the present application is shown. In fig. 2, the first coil 302 and the second coil 302 are connected to a lead (not shown in fig. 2) through which an alternating current flows, and a slot (not shown in fig. 2) for wiring the lead through which the alternating current flows is reserved in the case 1 or the vibrator 201, so that the coil 302 is conducted to the alternating current outside the vibration exciter.
In this embodiment, the number of the permanent magnet 202, the coil 302 and the iron cores 303 is set to two, and the supporting member 301 is of a T-shaped column structure, so that the whole vibration exciter is of an axisymmetric structure, and the two iron cores 303 simultaneously generate two sets of repulsion forces and attraction forces which are continuously and alternately changed, thereby not only increasing the driving force for the permanent magnet 202, but also enabling the permanent magnet 202 to drive the vibrator 201 to realize balanced knocking on the screen, protecting the screen, and improving the stability of screen sounding. Meanwhile, the axial symmetry structure is simple in structure, convenient to replace parts and capable of improving competitiveness of products.
Specifically, referring to fig. 5, a schematic structural diagram of the vibration assembly 2 of the second embodiment of the vibration exciter according to the present invention is shown; as shown in fig. 5, the vibrator 201 of the embodiment of the present application may include a rectangular frame assembled by a rectangular plate and two L-shaped plates, in the rectangular frame, the rectangular plate is the top of the vibrator 201, and the two L-shaped plates opposite to the rectangular plate are the bottom of the vibrator 201, the first permanent magnet 202 and the second permanent magnet 202 are disposed in the rectangular frame and fixed on the two L-shaped plates opposite to the rectangular plate, respectively, a bayonet is formed between the end surfaces of the two L-shaped plates, and the bayonet is communicated with the inside of the vibrator 201 to form a cavity in which a T-shaped column can be disposed.
Referring to fig. 6, there is shown a schematic structural view of the fixing assembly 3 of the second embodiment of the vibration exciter of the present application; as shown in fig. 6, the T-shaped column includes a rectangular plate and a rectangular parallelepiped, the rectangular plate can be used as a transverse portion of the T-shaped column and placed in the above-mentioned cavity for placing the T-shaped column, one end of the rectangular parallelepiped can be fixed on a plate surface of the rectangular plate by welding, and the other end can pass through the bayonet and be fixed on a vertical portion of the T-shaped column at the bottom of the housing 1 by laser welding, thereby forming a T-shaped structure. In a specific implementation, the axial length of the vertical portion of the T-shaped column may be long, so that a certain vibration distance is maintained between the iron core 303 and the permanent magnet 202.
In addition, in a preferred embodiment of the present application, a height-adjustable boss 203 is disposed on the top of the vibrator 201, and the top surface of the boss 203 is connected to the screen. The boss 203 can be an intermediate member in the first embodiment, and the boss 203 can be made of hard rubber, so that vibration sounding can be ensured, and certain protection can be applied to the screen. Specifically, a limiting opening 401 is formed in the centering branch piece 4, the limiting opening 401 is sleeved outside the boss 203, and therefore the vibration direction of the vibrator 201 is kept perpendicular to the screen by limiting the moving range of the boss 203. The problem that sound production is influenced due to unbalanced vibration force on a screen caused by overlarge vibration amplitude or deviation of the vibration direction of the vibrator 201 due to external factors (such as an external magnetic field interfering with the permanent magnet 202) in the motion process is solved, and compared with the prior art, the method is greatly improved. The limiting opening 401 cannot be too small at this time so as to avoid affecting the normal vibration of the boss 203.
To the technical problem of the utility model, this application still provides an electronic equipment, include:
a screen; and
a vibration exciter according to an embodiment of the present application disposed below the screen; the vibration direction of the vibration exciter is perpendicular to the screen. The vibration exciter enables the screen to vibrate and make sound, so that the problem of sound production of a mobile phone can be solved, and the competitiveness of electronic equipment can be improved.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The vibration exciter and the electronic device provided by the present application are described in detail above, and the principle and the implementation of the present application are explained in the present application by applying specific examples, and the description of the above examples is only used to help understand the structure and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (7)
1. A vibration exciter comprising a housing (1), a vibration assembly (2), a stationary assembly (3), and a spider (4), wherein:
the vibration assembly (2) is arranged in the shell (1) and comprises a vibrator (201), the top of the vibrator (201) is used for being connected with a screen, and a permanent magnet (202) is fixed at the bottom of the vibrator (201);
the fixing component (3) is arranged in the shell (1), and comprises a supporting piece (301) fixed with the shell (1), a coil (302) fixed on the supporting piece (301), and an iron core (303) sleeved in the coil (302), wherein the iron core (303) is positioned right above the permanent magnet (202);
when alternating current is introduced into the coil (302), repulsive force and attractive force which are changed alternately constantly are generated between the magnetized iron core (303) and the permanent magnet (202), and the permanent magnet (202) drives the vibrator (201) to vibrate along the direction vertical to the screen under the action of the repulsive force and the attractive force which are changed alternately constantly;
the centering support piece (4) is arranged at the top of the vibrator (201), connected with the vibration component (2) and the shell (1) and used for keeping the vibration direction of the vibrator (201) perpendicular to the screen.
2. A vibration exciter according to claim 1, characterised in that the permanent magnet (202) comprises a first permanent magnet and a second permanent magnet, which are axisymmetrical with respect to the central axis of the vibrator;
the support piece (301) is a T-shaped column, the upper end of the T-shaped column penetrates through the bottom of the vibrator (201) and is arranged in the vibrator (201), and the lower end of the T-shaped column is vertically fixed with the bottom surface of the shell (1);
the coil (302) comprises a first coil and a second coil, the first coil and the second coil are axisymmetrical about a central axis of the T-shaped pole;
the iron core (303) comprises a first iron core and a second iron core, the first iron core is sleeved in the first coil, and the second iron core is sleeved in the second coil.
3. A vibration exciter according to claim 1 or 2, characterised in that the top of the vibrator (201) is provided with a height-adjustable boss (203), the top surface of the boss (203) being connected to the screen.
4. A vibration exciter according to claim 3, characterized in that the centering branch piece (4) is provided with a limiting opening (401), and the limiting opening (401) is sleeved outside the boss (203).
5. A vibration exciter according to claim 1 or claim 2, characterised in that the permanent magnet (202) is made of a rare earth permanent magnet material.
6. A vibration exciter according to claim 1 or claim 2, characterised in that the core (303) is made of a soft magnetic material.
7. An electronic device, comprising:
a screen; and
a vibration exciter according to any of claims 1 to 6 disposed below the screen; the vibration direction of the vibration exciter is perpendicular to the screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020052972.6U CN211352009U (en) | 2020-01-10 | 2020-01-10 | Vibration exciter and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020052972.6U CN211352009U (en) | 2020-01-10 | 2020-01-10 | Vibration exciter and electronic equipment |
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| Publication Number | Publication Date |
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| CN211352009U true CN211352009U (en) | 2020-08-25 |
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| CN202020052972.6U Active CN211352009U (en) | 2020-01-10 | 2020-01-10 | Vibration exciter and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113114807A (en) * | 2021-04-07 | 2021-07-13 | Oppo广东移动通信有限公司 | Electronic device and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113114807A (en) * | 2021-04-07 | 2021-07-13 | Oppo广东移动通信有限公司 | Electronic device and control method thereof |
| CN113114807B (en) * | 2021-04-07 | 2023-09-01 | Oppo广东移动通信有限公司 | Electronic apparatus and control method thereof |
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