CN102868959B - Aluminium strip speaker - Google Patents
Aluminium strip speaker Download PDFInfo
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- CN102868959B CN102868959B CN201210388040.9A CN201210388040A CN102868959B CN 102868959 B CN102868959 B CN 102868959B CN 201210388040 A CN201210388040 A CN 201210388040A CN 102868959 B CN102868959 B CN 102868959B
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Abstract
The invention discloses an aluminium strip speaker which comprises a bar aluminium strip and a magnetic field parallel to the aluminium strip in the width direction, wherein the tone current is fed back along the length direction of the aluminium strip; the peripheral brim of the aluminium strip is fixed on a bracket; a plurality of annular impress edges are arranged on the aluminium strip near the peripheral brim of the bracket. Another technical scheme is that a Haier pneumatic aluminium strip speaker comprises the bar aluminium strip and the magnetic field parallel to the aluminium strip in the width direction; and the tone current is fed back along the length direction of the aluminium strip. The aluminium strip speaker is characterized in that the peripheral brim of the aluminium strip is fixed on the bracket; the joint of the brim of the bracket and the brim of the length direction of the aluminium strip forms a wave shape; the aluminium strip is fixed on the waveform bracket, so that the aluminium strip is curved in a waveform shape along the length direction; and the plurality of annular impress edges are arranged on the aluminium strip. It can be seen that a vibrating diaphragm of the aluminium strip speaker can be kept light; the aluminium strip speaker has the advantages of good high-frequency response and simple magnetic circuit, and the problem of the acoustic short circuit can be solved.
Description
Technical field:
The present invention relates to a kind of loud speaker, be specifically related to a kind of ribbon loudspeaker.
Background technology:
Ribbon speaker is a very ancient design, starts from nineteen twenty, because of vibrating diaphragm normally aluminium strip, also claims ribbon loudspeaker.The principle of ribbon loudspeaker as shown in Figure 1, is placed in the aluminium strip of permanent-magnetic field, feed-in tone currents, under the effect of electromagnetic force, and aluminium strip up-down vibration sounding.Practical aluminium band type loud speaker commonly dioptric type aluminium belt diaphragm, because can provide vibrating diaphragm rational amplitude, as shown in Figure 2.And according to saying that complications can provide the extra rigidity of vibrating diaphragm to resist diaphagras, simultaneously the aluminium belt diaphragm of various ribbon loudspeaker also usually sees compacting decorative pattern miscellaneous if diamond texture etc. is to suppress diaphagras.But the existence of dioptric type aluminium belt diaphragm causes the light yielding problem of vibrating diaphragm because of air-flow or impact.
Another kind of aluminium band type loudspeaker design scheme is the pneumatic ribbon loudspeaker of Haier's formula, Haier's formula modulated air steam loudspeaker is since the seventies invention in last century, have always all kinds of design occur and practical, as the Jet high pitch loudspeaker etc. of Elac company, that a technology being well studied development (is invented see Mr. Heil, us3636278, us3832499, us4056697).Its simple principle concept as shown in Figure 3, when move in opposite directions by (or contrary) for adjacent two parts of vibrating diaphragm of dark complications, air in deep valley is extruded away (or from ambient inlet air), when this motion is audio frequency alternate motion, air by among " extrude/suck " complications of alternation, and then will be formed from tortuous to extraradial sound wave.
And the US Patent No. 3636278 of in fact aforesaid Haier or the German patent DE 431659 of GERLACH to design be only principle type, cannot be practical, two kinds of designs all do not have coml to apply.Practical application be the design of Haier's formula accordion collapsible vibrating diaphragm (US3832499), and in the market be the design of the JET high pitch of the ELAC company improved, be also face vibrating diaphragm.Aluminium band type Haier loud speaker cannot be practical reason as follows: as shown in Figure 4, when the complications place extruding air of belt vibrating diaphragm upward opening, at the complications place of upward opening, define air positive pressure; Simultaneously adjacent in left and right aft-opening complications place, defines contrary negative pressure.The mid portion air of upward opening complications upwardly gone out, and forms radiative acoustic wave, and the air at vibrating diaphragm edge attract by the negative pressure after adjacent vibrating diaphragm, flowed to after vibrating diaphragm, i.e. short circuit.The ratio of this two parts air just determines radiation efficiency, and efficiency is too low just loses practicality.And this ratio is decided by the width of vibrating diaphragm because flow to vibrating diaphragm below be the air of vibrating diaphragm marginal portion, when widening the width of vibrating diaphragm, during forming surface vibrating diaphragm, the ratio of the air be shorted reduces, and radiation efficiency improves.
And the design of belt design Heil or Gerlach as shown in Figure 3, the very most of meeting of the air be squeezed before vibrating diaphragm is subject to the attraction of the negative pressure of vibrating diaphragm rear adjacent complications, flows to after vibrating diaphragm, forms acoustic short circuit, brings extremely low radiation efficiency, loses practicality.This acoustic short circuit problem also exists in the design of basic ribbon speaker, but because be that positive and negative pressure is little without tortuous or shallow complications, acoustic short circuit effect is not too obvious, but in low-frequency range, the amplitude of vibrating diaphragm strengthens, the upper and lower positive and negative pressure of vibrating diaphragm is large, and acoustic short circuit effect just obviously strengthens.This may be the high pitch loudspeaker that common ribbon loudspeaker is difficult to be used as two frequency divisions, be namely difficult to be operated in comparatively low-frequency range as the reason of 1 ~ 2kHz.
The application wishes the ribbon loudspeaker technical scheme proposing a kind of practicality for this reason, and keep the vibrating diaphragm of belt design light, high frequency response is good, the simple advantage of magnetic circuit, can overcome again its acoustic short circuit problem, improves the yielding inefficacy shortcoming of dioptric type aluminium belt diaphragm simultaneously.
Summary of the invention:
The object of this invention is to provide a kind of vibrating diaphragm that belt can be kept to design light, high frequency response is good, the simple advantage of magnetic circuit, can overcome again the ribbon loudspeaker that its acoustic short circuit problem improves the yielding inefficacy shortcoming of dioptric type aluminium belt diaphragm simultaneously.
Ribbon loudspeaker of the present invention, comprise the aluminium strip of strip and be parallel to the magnetic field of aluminium strip Width, along aluminium strip length direction feed-in tone currents, it is characterized in that, aluminium strip edge is fixed on support, and aluminium strip has several impression rings in the form of a ring near support edge.
Aluminium strip edge is fixed on support, under not increasing oscillating mass and not increasing the prerequisite of additional components, by arranging several impression rings in the form of a ring near support edge on aluminium strip, impression ring in the form of a ring can provide the reasonable amplitude of the diaphragm oscillations in impression ring.Vibrating diaphragm in impression ring is when aluminium strip feed-in tone currents, and up-down vibration, promotes air, and then produces acoustic radiation.So just under not strengthening oscillating mass not increase the prerequisite of additional components, simply but can provide the rational amplitude of vibrating diaphragm dexterously.Because it is fixed on support by the edge of aluminium strip, the air namely before and after vibrating diaphragm is isolated, the air that before and after vibrating diaphragm, a side is pushed can not attract by the negative pressure of the opposing party and offset, the problem of acoustic short circuit would not be produced.Vibrating diaphragm is fixed on support, can not be out of shape easily because of air-flow or impact, solve the problem that traditional dioptric type aluminium belt diaphragm lost efficacy because shape is yielding.
Certainly, larger amplitude is provided in order to give bass ribbon loudspeaker in some, be easy to it is envisioned that, inside existing impression ring in the form of a ring together, suppress the impression ring in the form of a ring of or more again, thus the amplitude of twice or more is provided, therefore impression ring is in the form of a ring preferably two or more.
Another one technical scheme of the present invention is: the pneumatic ribbon loudspeaker of Haier's formula, comprise the aluminium strip of strip and be parallel to the magnetic field of aluminium strip Width, along aluminium strip length direction feed-in tone currents, it is characterized in that, aluminium strip edge is fixed on support, bracket edge and aluminium strip lengthwise edge junction undulate, aluminium strip is fixed on corrugated support, thus make aluminium strip tortuous at undulate along its length, aluminium strip has several impression rings along aluminium strip length direction.
The junction undulate of support and aluminium strip lengthwise edge, aluminium strip is fixed on corrugated support, thus make aluminium strip tortuous at undulate along its length, the air of corrugated like this aluminium belt diaphragm front portion and the air at vibrating diaphragm rear portion are separated by support, before and after vibrating diaphragm, the air that one side is extruded can not attract by the negative pressure of the opposing party and offset, the problem of acoustic short circuit would not be produced.Vibrating diaphragm is fixed on support, can not be out of shape easily because of air-flow or impact, solve the problem that traditional dioptric type aluminium belt diaphragm lost efficacy because shape is yielding, and when feed-in tone currents, the width alternation ground of aluminium strip waveform complications is widened or is narrowed, extruding or suction air, and then produce the pneumatic acoustic radiation of Haier's formula, and impression ring simply can provide the rational amplitude of vibrating diaphragm meander width change dexterously under not strengthening oscillating mass not increase the prerequisite of additional components.
Preferably, described impression ring is two, is located at aluminium strip two long limits respectively near support inner edge place.
Certainly, in order to provide larger amplitude to bass ribbon loudspeaker in some, be easy to it is envisioned that, in the inner side of existing one impression ring, suppress the impression ring of or more again, thus provide the amplitude of twice or more, therefore described impression ring is preferably three or more.
As can be seen here, the present invention can keep the vibrating diaphragm of aluminium belt diaphragm loud speaker light, and high frequency response is good, the simple advantage of magnetic circuit, can overcome again its acoustic short circuit problem, also improves the yielding inefficacy shortcoming of dioptric type aluminium belt diaphragm simultaneously.
Accompanying drawing illustrates:
Fig. 1 is the schematic diagram of ribbon loudspeaker;
Fig. 2 is the schematic diagram of dioptric type ribbon loudspeaker;
The schematic diagram of Tu3Shi Haier formula ribbon loudspeaker;
The acoustic short circuit schematic diagram of Tu4Shi Haier formula ribbon loudspeaker;
Fig. 5 is the structural representation of the ribbon loudspeaker of embodiment 1, and wherein Fig. 5 a-d is the schematic diagram preparing ribbon loudspeaker, and Fig. 5 e is the longitudinal section of Fig. 5 d;
Fig. 6 is the structural representation of the pneumatic ribbon loudspeaker of Haier's formula of embodiment 2, and wherein Fig. 6 a-d is the schematic diagram of the pneumatic ribbon loudspeaker of preparation Haier's formula;
Fig. 7 is the A-A cutaway view of Fig. 6 d;
Wherein 1, support; 2, aluminium strip; 3, impression ring in the form of a ring; 4, aluminium strip; 5, impression ring; 6, support, 7, magnet steel; 8, magnetic circuit.
Embodiment:
Following examples further illustrate of the present invention, instead of limitation of the present invention.
Embodiment 1:
As shown in Figure 5, a-d in Fig. 5 is the structure schematic diagram of the ribbon loudspeaker of the present embodiment, Fig. 5 e is the longitudinal section of Fig. 5 d, this ribbon loudspeaker comprises the aluminium strip 2 of strip and is parallel to the magnetic field of aluminium strip Width, magnetic field comprises or substantially comprises aluminium strip 2, and along aluminium strip length direction energy feed-in tone currents, aluminium strip edge is fixed on support 1, have 1 impression ring 3 in the form of a ring near support place in aluminium strip 2 edge, impression ring 3 is in the form of a ring positioned at magnetic field.
Prepare example 1: at the plastic stent 1(wall thickness 0.8mm of 100 × 10 × 5mm, as shown in Figure 5 a), the aluminium strip 2 of wide 10 micron thickness of 10mm on its opening part gummed, two reserves to do and goes between with (Fig. 5 b), put into mould, go out the indenture of the approximate half-circular of the dark 1mm of wide 2mm near the mold pressing of support place in aluminium strip edge, indenture forms impression ring 3 in the form of a ring thus, as shown in Figure 5 c, shown in Fig. 5 d and e, the support of band aluminium strip is inserted in magnetic circuit 8, the magnetic pole strength of magnetic circuit 8 is 100 × 5mm, distance between two poles is from being 10.5mm, form the permanent-magnetic field that is approximately 100 × 5 × 10.5MM, magnetic direction is in 10.5 directions, and ensure the middle part of aluminium belt diaphragm generally within magnetic field, namely the novel ribbon loudspeaker without acoustic short circuit of edge supports band impression ring is in the form of a ring formed.Certainly, be suppress the diaphagras of vibrating diaphragm, on the vibrating diaphragm planar section in impression ring, various decorative pattern can be suppressed, with improving SNR.
Embodiment 2:
As shown in Figure 6 and Figure 7, a-d in Fig. 6 is the structure schematic diagram of the pneumatic ribbon loudspeaker of Haier's formula of the present embodiment, the pneumatic ribbon loudspeaker of Haier's formula comprises the aluminium strip 4 of strip and is parallel to the magnetic field of aluminium strip Width, along aluminium strip length direction energy feed-in tone currents, aluminium strip 4 edge is fixing on the frame 6, the long limit undulate of support 6, the junction undulate of support 6 edge and aluminium strip lengthwise edge, aluminium strip 4 is fixed on corrugated support 6, thus make aluminium strip 4 tortuous at undulate along its length, near the inner edge place of support 6, respectively there is 1 impression ring 5 along aluminium strip length direction on aluminium strip 4 two long limits.
Concrete preparation process:
Prepare example 1: as shown in Figure 6 and Figure 7, wide at a 10mm, on the aluminium strip 4 of 10 micron thickness, the mode of rolling with wheel extrudes the impression ring 5 of the approximate half-circular of two dark 1mm of wide 2mm at length direction, the outward flange of impression ring 5 apart from aluminium strip edge 1mm(Fig. 6 a), this width gives over to be combined with support 6 and uses.Get the ABS plastic sheet that two 0.8mm are thick, be cut into the sheet of 100 × 10mm, a long limit mills out wavy edge wherein, the top of wave is semicircle, and radius is 5mm, has five deep valleys, by two waveform sheets, interval 10mm, is parallelly fixed into the rectangular frame shape support 6 that outside dimension is 100 × 10mm, as shown in Figure 6 b.The aluminium belt diaphragm 4 of the band impression ring 5 pressed is glued together in wavy edge on the frame 6, form oscillating component (Fig. 6 c), insert in magnetic circuit 8 as shown in fig 6d, the magnetic pole strength of magnet steel 7 is 100 × 10mm, magnet steel spacing is 10.5mm, namely forms the pneumatic ribbon loudspeaker of novel Haier formula of an edge supports band impression ring.
Above-listed detailed description is illustrating for possible embodiments of the present invention, and this embodiment is also not used to limit the scope of the claims of the present invention, and the equivalence that all the present invention of disengaging do is implemented or changed, and all should be contained in the scope of the claims of this case.
Claims (5)
1. a ribbon loudspeaker, comprise the aluminium strip of strip and be parallel to the magnetic field of aluminium strip Width, along aluminium strip length direction feed-in tone currents, it is characterized in that, aluminium strip edge is fixed on support, and aluminium strip has several impression rings in the form of a ring near support edge.
2. ribbon loudspeaker according to claim 1, is characterized in that, described impression ring is in the form of a ring two or more.
3. the pneumatic ribbon loudspeaker of Haier's formula, comprise the aluminium strip of strip and be parallel to the magnetic field of aluminium strip Width, along aluminium strip length direction feed-in tone currents, it is characterized in that, aluminium strip edge is fixed on support, bracket edge and aluminium strip lengthwise edge junction undulate, and aluminium strip is fixed on corrugated support, thus make aluminium strip tortuous at undulate along its length, aluminium strip has several impression rings along aluminium strip length direction.
4. the pneumatic ribbon loudspeaker of Haier according to claim 3 formula, is characterized in that, described impression ring is two, is located at aluminium strip two long limits respectively near support inner edge place.
5. the pneumatic ribbon loudspeaker of Haier according to claim 3 formula, is characterized in that, described impression ring is three or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210388040.9A CN102868959B (en) | 2012-10-12 | 2012-10-12 | Aluminium strip speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210388040.9A CN102868959B (en) | 2012-10-12 | 2012-10-12 | Aluminium strip speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102868959A CN102868959A (en) | 2013-01-09 |
| CN102868959B true CN102868959B (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210388040.9A Active CN102868959B (en) | 2012-10-12 | 2012-10-12 | Aluminium strip speaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN102868959B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102349453B1 (en) | 2015-07-24 | 2022-01-10 | 삼성전자주식회사 | Speaker apparatus and electronic apparatus including the same |
| WO2017214855A1 (en) * | 2016-06-14 | 2017-12-21 | 邓克忠 | Pneumatic single-body structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5765996A (en) * | 1980-10-13 | 1982-04-21 | Katsuya Ishizaki | Speaker due to plane diaphragm |
| US4354066A (en) * | 1980-09-15 | 1982-10-12 | Necoechea Robert W | Rigid-diaphragm transducer with plural coils |
| CN1596032A (en) * | 2003-09-11 | 2005-03-16 | Akg声学有限公司 | Dynamic electroacoustic converter, in particular small speaker |
| EP0814637B1 (en) * | 1996-06-19 | 2005-11-09 | AKG Acoustics GmbH | Method for producing a diaphragm for an electroacoustic transducer |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3636278A (en) * | 1969-02-19 | 1972-01-18 | Heil Scient Lab Inc | Acoustic transducer with a diaphragm forming a plurality of adjacent narrow air spaces open only at one side with the open sides of adjacent air spaces alternatingly facing in opposite directions |
| CN2126492U (en) * | 1991-09-07 | 1992-12-30 | 曹月明 | Full flat shear wave diffusion triangular beam resonance plate |
| JP4573543B2 (en) * | 2004-03-02 | 2010-11-04 | 株式会社オーディオテクニカ | Movable ribbon microphone |
| CN1961608B (en) * | 2004-05-27 | 2011-08-17 | 松下电器产业株式会社 | Loudspeaker |
| CN1756445A (en) * | 2004-09-30 | 2006-04-05 | 春耕科技有限公司 | Ribbon type sound film of plane loudspeaker and its manufacturing method |
| DE102007020847B4 (en) * | 2007-05-02 | 2009-11-26 | Mundorf Eb Gmbh | Membrane arrangement for an electrodynamic sound transducer and loudspeaker with such a membrane arrangement |
| CN201114747Y (en) * | 2007-07-31 | 2008-09-10 | 深圳市兰光进出口有限公司 | Closed big voice coil speaker with resonator |
-
2012
- 2012-10-12 CN CN201210388040.9A patent/CN102868959B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4354066A (en) * | 1980-09-15 | 1982-10-12 | Necoechea Robert W | Rigid-diaphragm transducer with plural coils |
| JPS5765996A (en) * | 1980-10-13 | 1982-04-21 | Katsuya Ishizaki | Speaker due to plane diaphragm |
| EP0814637B1 (en) * | 1996-06-19 | 2005-11-09 | AKG Acoustics GmbH | Method for producing a diaphragm for an electroacoustic transducer |
| CN1596032A (en) * | 2003-09-11 | 2005-03-16 | Akg声学有限公司 | Dynamic electroacoustic converter, in particular small speaker |
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| CN102868959A (en) | 2013-01-09 |
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