CN103987004B - Thin speaker - Google Patents
Thin speaker Download PDFInfo
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- CN103987004B CN103987004B CN201410128800.1A CN201410128800A CN103987004B CN 103987004 B CN103987004 B CN 103987004B CN 201410128800 A CN201410128800 A CN 201410128800A CN 103987004 B CN103987004 B CN 103987004B
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- frame
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- yoke framework
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Abstract
The invention discloses a kind of super-thin speaker, including frame, the sound film and at least one actuator that are installed in frame, the actuator includes producing the magnetic circuit vibrational system of vibration based on audio signal and above-mentioned vibration is transferred into sound vibration of membrane delivery arm；Magnetic circuit vibrational system includes one based on the yoke framework that vibration is produced under Electromagnetic Drive, and the yoke framework is flush-mounted in the side wall of the frame and is located at the lower section of the sound film；The one end for vibrating delivery arm is connected to side of the yoke framework away from frame side wall, and the other end extends abutting to sound film from the oblique top of yoke framework.The present invention proposes a kind of loudspeaker that improve low frequency performance and can further be thinned loudspeaker overall structure.
Description
Technical field
The present invention relates to a kind of loudspeaker, more particularly to a kind of super-thin speaker.
Background technology
At present, known slimming loudspeaker can be divided into two classes：One is traditional long narrow Ultrathin electric type loudspeaker, its
Principle of sound be when tone currents is by the voice coil loudspeaker voice coil that hangs in fixed magnetic field, voice coil loudspeaker voice coil stress and move, so as to swash tibial membrane
Vibration sounding；This loudspeaker must have a magnetic circuit to provide power source, and the size and weight of exactly this magnetic circuit limit it is such
The further ultrathin of loudspeaker, long narrowization and miniaturization.The verified electricity in 200 to 400 cubic millimeters of space of experiment
Magnetic-type magnetic circuit than electrodynamic type magnetic circuit more efficiently, but traditional electromagnetic actuators form factor (the i.e. width of actuator and height
The ratio between) be about between 1 to 2, it is generally inadequate to the actuating power required for loudspeaker is provided.The second is the loudspeaker of piezo-electric type,
Its principle of sound is that piezoelectric vibrator is vibrated due to inverse piezoelectric effect and then swashs tibial membrane and shaken when tone currents is by piezoelectric vibrator
Dynamic sounding；However, by taking Piezoelectric loudspeaker as an example, it is limited to the intrinsic physical property of piezoelectric ceramics, not only piezoelectric ceramics
It is frangible, and piezoelectric ceramic vibration is difficult the sufficiently large amplitude required for providing loudspeaker in itself, so there is presently no low frequency
The piezoelectric loudspeaker for having responded occurs.
The content of the invention
In view of the shortcomings of the prior art, the present invention proposes one kind can improve low frequency performance and can be by loudspeaker overall structure
The loudspeaker being further thinned.
In order to achieve the above object, the technical solution adopted in the present invention is as follows：
Super-thin speaker, including frame, the sound film and at least one actuator that are installed in frame, the actuator bag
Include the magnetic circuit vibrational system based on audio signal generation vibration and above-mentioned vibration is transferred to sound vibration of membrane delivery arm；The magnetic
Road vibrational system includes one based on the yoke framework that vibration is produced under Electromagnetic Drive, and the yoke framework is flush-mounted in the side wall of the frame
It is interior and positioned at the lower section of the sound film；One end of the vibration delivery arm is connected to side of the yoke framework away from frame side wall,
The other end extends abutting to sound film from the oblique top of yoke framework.
Preferably, the yoke framework includes a bottom, a top and a counter-lateral quadrents, wherein, width and the height of sidepiece
The ratio between be not less than 2；The pair of sidepiece is supported including first sidepiece fitted with frame side wall and one with vibration delivery arm
The second sidepiece for connecing；Second sidepiece is provided with an air gap.
Preferably, the vibration delivery arm is plate-like, and its one end is abutted with the middle part of sound film, the other end and yoke framework
Second sidepiece is abutted；The vibration delivery arm includes a body, extends the first extension to be formed from the body two ends
With the second extension, first extension extends vertically and close with the second sidepiece of yoke framework upwards from the head end of body
Laminating, second extension is extended vertically and abutted with the middle part of sound film upwards from the tail end of body.
Preferably, the vibration delivery arm is loose structure.
Preferably, the frame is in cavity shape, and it includes that a bottom wall, one are extended the side wall for being formed by bottom wall part periphery；Institute
State frame side wall and be provided with embedding slot for being embedded in yoke framework；The sound film is installed on the side wall of the frame by ring.
Preferably, the magnetic circuit vibrational system also includes coil and the magnetic element being contained in the yoke framework, described
Coil, air gap and magnetic element coordinate the Electromagnetic Drive environment for constituting yoke framework.
Preferably, the magnetic element is permanent magnet or DC coil；The surface of the magnetic element is coated with preserving timber
Material.
Preferably, the quantity of the coil is more than one.
Preferably, the actuator is two, and is symmetrically distributed on the length direction of frame.
Preferably, the actuator is four, wherein, two are symmetrically distributed on the length direction of frame, another two pair
Title is distributed on the width of frame.
Beneficial effects of the present invention are as follows：
Be input into audio signal to coil by the present invention, the phase interaction of dynamic current and air gap in magnetic element, coil
Under, yoke framework produces the vibration of different frequency, and the present invention is inlaid in the side wall of frame by by yoke framework, and will be shaken
Dynamic delivery arm two ends abut to sound film and yoke framework away from the side of frame side wall respectively, are passed by the angularly disposed vibration
The lateral transport that arm realizes vibration is passed, compared with piezoelectric loudspeaker, actuator of the invention can provide low frequency spoke for loudspeaker
Required vibration amplitude when penetrating, with the piezoelectric vibrator vibration amplitude for solving existing piezoelectric loudspeaker it is too small caused by it is sensitive
The relatively low problem of degree, so as to be effectively improved the low frequency performance of loudspeaker；Compared with traditional electromagnetic actuators, the present invention can protected
Hold traditional magnetic circuit driving force it is constant in the case of, to increase the actuator shape factor (the yoke framework i.e. in the present invention program
The ratio between width of sidepiece and height) method significantly improve actuator driving force, be conducive to loadspeaker structure to be further thinned.
Brief description of the drawings
Fig. 1 is the stereogram of the preferred embodiment of super-thin speaker of the present invention；
Fig. 2 is the decomposing schematic representation of super-thin speaker in Fig. 1；
Fig. 3 is the longitudinal sectional drawing of actuator and sound film in Fig. 1；
Fig. 4 is the stereogram of actuator in Fig. 1.
Specific embodiment
Below, with reference to accompanying drawing and specific embodiment, the present invention is described further, in order to clearer understanding
Present invention technological thought required for protection.
In the specific descriptions of following preferred embodiment, by the accompanying drawing with reference to appended by constituting a present invention part.Institute
Attached accompanying drawing has been illustrated by way of example can realize specific embodiment.The embodiment of example is not intended as
Limit all embodiments of the invention.It is appreciated that without departing from the scope of the present invention, it is possible to use other
Embodiment, it is also possible to carry out structural or logicality modification.Therefore, specific descriptions below are simultaneously nonrestrictive, and this
The scope of invention is defined by the claims appended hereto.
Refer to Fig. 1 and Fig. 4, the present invention relates to a kind of super-thin speaker, its better embodiment include frame 100,
Sound film 200 and actuator 300.
Frame 100 is used to install sound film 200 and actuator 300, and it is in cavity shape, including bottom wall 110, by bottom wall 110 weeks
Edge extends the side wall 120 to be formed.Wherein, bottom wall 110 is the hollow sheeting that a middle part opens up cavity, and the cavity is in the height direction
Through whole bottom wall part 110.Side wall 120 is adapted with the shape of actuator 300, and specifically, in side, the inner side of wall 120 is provided with use
In the embedding slot of setting-in actuator 300.
Sound film 200 is a flat membrane structure, and it is installed in frame 100 and thickness and size can be as needed
Set.In the present embodiment, sound film 200 is installed on the side wall 120 of the frame 100 by ring 400.
Actuator 300 includes producing the magnetic circuit vibrational system 310 of vibration based on audio signal and is transferred to above-mentioned vibration
The vibration delivery arm 320 of sound film 200.
In the present embodiment, magnetic circuit vibrational system 310 includes yoke framework 311, the magnetic being contained in the yoke framework 311
Property element 312 and around the coil 313 being located in the yoke framework 311.
Yoke framework 311 is flush-mounted in the side wall 120 of the frame 100 and is located at the lower section of the sound film 200.Yoke framework
311 include a bottom 311a, a top 311d, a counter-lateral quadrents (311b, 311c).Wherein, a counter-lateral quadrents (311b, 311c) includes
One the first sidepiece 311b fitted with a frame side wall 120 and second sidepiece 311c abutted with vibration delivery arm 320；And
And, yoke framework 311 is inlaid in the embedding slot of side wall 120 by first sidepiece 311b so that whole magnetic circuit vibrational system
310 inner surfaces for being closely inlaid in frame 100；Second sidepiece 311c is provided with an air gap 311e, air gap 311e this
Position on two sidepiece 311c can be arranged as required to.Can be with the magnetic element 312 when dynamic current flows through the coil 313
Interacted with air gap, constitute the Electromagnetic Drive environment of yoke framework 311, make yoke framework 311 be based on being produced under Electromagnetic Drive
The vibration of different frequency, and those skilled in the art can as needed take the combination mould of various magnetic elements 312 and coil 313
The position relationship of formula, magnetic element 312 and coil 313 is not unique.
In the present embodiment, it is more than one around the coil 313 being located in yoke framework 311, its quantity can be as needed
Set, and it can be around being located on the top 311d of yoke framework 311, or around the bottom for being located at yoke framework 311
On 311a.
The surface of magnetic element 312 is coated with anti-corrosion material, the magnetic element 312 can be permanent magnet or DC coil,
In the present embodiment, magnetic element 312 is arranged on the bottom 311a of yoke framework 311, in some other embodiment, the magnetic
Property element 312 can also be arranged on the top 311d or a counter-lateral quadrents of yoke framework 311 (311b, 311c).
The one end for vibrating delivery arm 320 is connected to side (i.e. second sidepiece of the yoke framework 311 away from frame side wall
311c), the other end extends from the oblique top of yoke framework 311 and abuts to sound film 200, for magnetic circuit vibrational system 310 to be generated
Vibration fast delicately transmit to sound film 200 so that sound film 200 send different frequency and power sound.In the present embodiment
In, the vibration delivery arm 320 is plate-like, including a body 322, to be formed first is extended from the two ends of body 322 prolongs
The extension 323 of extending portion 321 and second, first extension 321 extended vertically upwards from the head end of body 322 and with yoke frame
Second sidepiece 311c of body fits closely, second extension 323 extended vertically upwards from the tail end of body 322 and with sound film
200 middle part abuts.Wherein, the first extension 321 can increase vibration delivery arm 320 with close laminating of the second sidepiece 311c
With the contact area of yoke framework 311, to improve vibration efficiency of transmission.Preferably, the width of the first extension 321 with
The width L of the sidepiece of yoke framework 311 is consistent, to promote vibration delivery arm 320 fully to be connect with the sidepiece 311c of yoke framework 311
Touch.
In some other embodiment, multiple perforation can be set in vibration delivery arm 320, to form loose structure, from
And moving-mass and harmful acoustic radiation face are reduced, and, the shape for vibrating delivery arm 320 is not limited to rectangular tabular knot
Structure, can also be using such as I-shaped.
In some other embodiment, also reinforced bar net can be laid in the lower surface of sound film 200, and the reinforced bar net is passed with vibration
Arm 320 is passed to be integrally formed.
The present invention is inlaid in the side wall 120 of frame 100 by by yoke framework 311, and will vibration delivery arm 320 two ends
The second sidepiece 311c to sound film 200 and yoke framework 311 is abutted respectively, it is real by the angularly disposed vibration delivery arm 320
The lateral transport now vibrated, compared with piezoelectric loudspeaker, actuator of the invention can generate bigger vibration amplitude, and provide
High-quality low frequency performance, for example, under square one, the vibration amplitude of piezoelectric itself is less than 0.1mm, and the magnetic circuit shakes
The vibration amplitude of the dynamic generation of system 310 can reach 0.5mm to 1.5mm, so that for required when loudspeaker provides low frequency radiation
Vibration amplitude, asks so that the too small caused sensitivity of the piezoelectric vibrator vibration amplitude for solving existing piezoelectric loudspeaker is relatively low
Topic, so as to be effectively improved the low frequency performance of loudspeaker.
The ratio between the width of actuator and height are defined as the form factor of actuator, in the present invention, actuator herein
Form factor be the ratio between width L and height H of yoke framework sidepiece.Therefore actuator structure of the present invention is used to be caused for increase
Dynamic device form factor the ratio between (i.e. the width of yoke framework sidepiece with height) with improve actuator driving force provide may, favorably
Further it is thinned in loadspeaker structure.In the present embodiment, the width L and height H of the sidepiece (311b, 311c) of yoke framework
The ratio between be not less than 2, make whole yoke framework 311 substantially in slender type, fitted in the case where the height H of yoke framework 311 is reduced
As the width L for increasing yoke framework 311, to ensure enough yoke areas of section, loadspeaker structure can be further thinned,
It is therefore particularly suitable for the audio scheme design of the plate video equipment such as LCD, PDP.The present invention can keep traditional magnetic circuit to drive
In the case that kinetic force is constant, with increase the actuator shape factor (width of the yoke framework sidepiece i.e. in the present invention program with
Height the ratio between) method significantly improve actuator driving force, be conducive to loadspeaker structure to be further thinned.
Meanwhile, in some other embodiment, actuator could be arranged to two, and two actuators are symmetrically distributed in basin
On the length direction of frame；Or, actuator is set to four, wherein, two are symmetrically distributed on the length direction of frame, separately
Two are symmetrically distributed on the width of frame.
For a person skilled in the art, technical scheme that can be as described above and design, make other each
Plant corresponding change and deform, and all these changes and deforms the protection model that should all belong to the claims in the present invention
Within enclosing.
Claims (8)
1. super-thin speaker, including frame, the sound film being installed in frame and at least one actuator, it is characterised in that：Institute
Stating actuator includes being produced the magnetic circuit vibrational system of vibration and above-mentioned vibration being transferred into sound vibration of membrane based on audio signal passing
Pass arm；The magnetic circuit vibrational system includes one based on the yoke framework that vibration is produced under Electromagnetic Drive, and the yoke framework is flush-mounted in
In the side wall of the frame and positioned at the lower section of the sound film；One end of the vibration delivery arm is connected to the yoke framework away from frame
The side of side wall, the other end extends abutting to sound film from the oblique top of yoke framework；The yoke framework includes a bottom, a top
Portion and a counter-lateral quadrents, wherein, the ratio between width and height of sidepiece are not less than 2；The pair of sidepiece includes one with frame side wall
First sidepiece of laminating and second sidepiece abutted with vibration delivery arm；Second sidepiece is provided with an air gap；It is described to shake
Dynamic delivery arm is plate-like, and its one end is abutted with the middle part of sound film, and the other end is abutted with the second sidepiece of yoke framework；The vibration
Delivery arm includes a body, extends the first extension and the second extension to be formed from the body two ends, and this first prolongs
Extending portion is extended vertically and fitted closely with the second sidepiece of yoke framework upwards from the head end of body, and second extension is from originally
The tail end in body portion is extended vertically and abutted with the middle part of sound film upwards.
2. super-thin speaker as claimed in claim 1, it is characterised in that：The vibration delivery arm is loose structure.
3. super-thin speaker as claimed in claim 1, it is characterised in that：The frame be in cavity shape, it include a bottom wall,
One is extended the side wall for being formed by bottom wall part periphery；Frame side wall is provided with the embedding slot for being embedded in yoke framework；The sound
Film is installed on the side wall of the frame by ring.
4. super-thin speaker as claimed in claim 1, it is characterised in that：The magnetic circuit vibrational system also includes coil and appearance
The magnetic element in the yoke framework is put, the coil, air gap and magnetic element coordinate the Electromagnetic Drive for constituting yoke framework
Environment.
5. super-thin speaker as claimed in claim 4, it is characterised in that：The magnetic element is permanent magnet or AC line
Circle；The surface of the magnetic element is coated with anti-corrosion material.
6. super-thin speaker as claimed in claim 4, it is characterised in that：The quantity of the coil is more than one.
7. the super-thin speaker as any one of claim 1-6, it is characterised in that：The actuator is two, and
It is symmetrically distributed on the length direction of frame.
8. the super-thin speaker as any one of claim 1-6, it is characterised in that：The actuator is four, its
In, two are symmetrically distributed on the length direction of frame, and another two is symmetrically distributed on the width of frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410128800.1A CN103987004B (en) | 2014-04-01 | 2014-04-01 | Thin speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410128800.1A CN103987004B (en) | 2014-04-01 | 2014-04-01 | Thin speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103987004A CN103987004A (en) | 2014-08-13 |
| CN103987004B true CN103987004B (en) | 2017-06-27 |
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ID=51278809
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410128800.1A Active CN103987004B (en) | 2014-04-01 | 2014-04-01 | Thin speaker |
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| Country | Link |
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| CN (1) | CN103987004B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109982218A (en) * | 2019-04-01 | 2019-07-05 | 深圳市信维声学科技有限公司 | A kind of Bidirectional sounding loudspeaker |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3972306B2 (en) * | 2003-11-20 | 2007-09-05 | ミネベア株式会社 | Speaker diaphragm and speaker using the diaphragm |
| CN101207942A (en) * | 2007-12-19 | 2008-06-25 | 傅建华 | Ultra thin type depth base tone loudspeaker with touch sensation shaking feeling |
| CN101682819A (en) * | 2008-01-28 | 2010-03-24 | 日本先锋公司 | Speaker device |
| CN102291655A (en) * | 2010-06-17 | 2011-12-21 | 索尼公司 | Acoustic conversion device and acoustic conversion device assembly method |
| CN102474689A (en) * | 2009-07-09 | 2012-05-23 | 日本先锋公司 | Speaker device |
| CN203883988U (en) * | 2014-04-01 | 2014-10-15 | 国光电器股份有限公司 | Ultra-thin type loudspeaker |
-
2014
- 2014-04-01 CN CN201410128800.1A patent/CN103987004B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3972306B2 (en) * | 2003-11-20 | 2007-09-05 | ミネベア株式会社 | Speaker diaphragm and speaker using the diaphragm |
| CN101207942A (en) * | 2007-12-19 | 2008-06-25 | 傅建华 | Ultra thin type depth base tone loudspeaker with touch sensation shaking feeling |
| CN101682819A (en) * | 2008-01-28 | 2010-03-24 | 日本先锋公司 | Speaker device |
| CN102474689A (en) * | 2009-07-09 | 2012-05-23 | 日本先锋公司 | Speaker device |
| CN102291655A (en) * | 2010-06-17 | 2011-12-21 | 索尼公司 | Acoustic conversion device and acoustic conversion device assembly method |
| CN203883988U (en) * | 2014-04-01 | 2014-10-15 | 国光电器股份有限公司 | Ultra-thin type loudspeaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103987004A (en) | 2014-08-13 |
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