CN1925694B - Fabric thin-belt type sound-membrane loudspeaker - Google Patents
Fabric thin-belt type sound-membrane loudspeaker Download PDFInfo
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- CN1925694B CN1925694B CN2005100369727A CN200510036972A CN1925694B CN 1925694 B CN1925694 B CN 1925694B CN 2005100369727 A CN2005100369727 A CN 2005100369727A CN 200510036972 A CN200510036972 A CN 200510036972A CN 1925694 B CN1925694 B CN 1925694B
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- type sound
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Abstract
This invention relates to one fabric film audio microphone, which comprises two bars of different magnetic electrode boards to form permanent magnetic field, wherein, the said field is set with several wires distributed along length direction to form fabric film with each wire outer circuit connection to form series connection; when audio film feeds audio signals, each wire generates same audio frequency current under magnetic function to generate same upper and down vibration drive force.
Description
Technical field
The present invention relates to a kind of improvement of ribbon speaker.
Background technology
Owing to the rise of SACD and DVD Audio, the high frequency bandwidth in package program source is brought up to 44KHz by the 22KHz of traditional C D at present, thus the desirability that has brought the high-end frequency response of audio amplifier to widen.The tradition ball top type loudspeaker is as the high-end bandwidth of the soft ball top type loudspeaker 20KHz that only has an appointment, though the tone color grace can't satisfy the demands.And adopt beryllium, diamond, pottery, etc. the hard ball top type loudspeaker of hard sphere top vibrating diaphragm, though bandwidth can be widened 40KHz, even 100KHz, but run into two problems, the one, with high costs, difficulty of processing is too big, the 2nd, these material internal dampings are too little, easily produce and cut apart vibration, high-end frequency response has bigger peak valley, causes tone color easily to produce cold, hard problem.
And traditional ribbon speaker or title aluminium strip high pitch, this 2 years markets get warm again after a cold spell to some extent, and the one, it can reach the bandwidth of 40～50KHz, satisfies present requirement to high frequency bandwidth, and the 2nd, its manufacture difficulty is relatively low.Shown in Figure 1 as description of drawings, in the bar shaped magnetic field that certain altitude is arranged that two different name strip magnetic poles that are arranged side by side produce, one folding aluminium foil strip is arranged, external power amplifier behind matching transformer, when presenting with audio signal through power amplifier, through in aluminium foil strip, forming a tone currents behind the matching transformer, produce the actuating force of up-down vibration with the action of a magnetic field, drive the aluminium strip vibration sounding.But ribbon speaker also runs into three problems in practicality:
1, impedance is too low, only has an appointment 0.01 ohm, can't be directly and power amplifier be complementary, must add matching transformer, impedance is raise, and matching transformer is very big to the influence of sound.
2, aluminium strip material internal damping is too low, and tone color runs into chill problem equally.
3, resistance to impact is too poor, and Chong impact just can destroy the collapsed shape of aluminium strip slightly, even heavy-handed point is all not all right when putting down.And the slightly bigger collapsed shape that also may destroy aluminium strip of volume when using, failure rate is too high.
Summary of the invention
The objective of the invention is to propose a kind of can be at the high frequency bandwidth that keeps the conventional belt loud speaker, in the time of advantage such as transient state is good, solve the fabric thin-belt type sound-membrane loudspeaker of problems such as its impedance is low, tone color is chill, failure rate height effectively.
Fabric thin-belt type sound-membrane loudspeaker of the present invention by the following technical solutions, it has at least two strip synonyms pole plates arranged side by side relatively, form strip permanent magnetic field, in described strip permanent magnetic field, be provided with one by the fabric strip and in this band along its length and the fabric thin-belt type sound-membrane that constitutes of some leads of column distribution, each lead in the fabric strip through external circuit with series connection or/and parallel way connect, make and in each lead, produce the homophase tone currents when feeding audio signal, thus, under the effect in magnetic field, lead produces the actuating force of the up-down vibration of homophase, the whole fabric thin-belt type sound-membrane up-down vibration sounding that drives.
Can keep definite shape by thermal finalization at described fabric thin-belt type sound-membrane, and can be by applying the internal damping of one deck glued membrane raising sound film.
Below for two kinds of common organization plans of fabric thin-belt type sound-membrane loudspeaker of the present invention:
First kind of organization plan is that it is arranged side by side relatively that loud speaker is established two strip synonyms pole plates, forms a strip permanent magnetic field, establishes a fabric thin-belt type sound-membrane in this strip permanent magnetic field.
Second kind of organization plan is, loud speaker is provided with two and put strip permanent magnetic field, establish one described fabric thin-belt type sound-membrane in each strip permanent magnetic field, and it is the lead in two fabric strip sound films is continuous, article two, the electric current in all leads of fabric strip sound film acts on mutually with magnetic field and produces the homophase electromagnetic actuation force, thereby make two in phase whole drivings of fabric strip sound films quilt and sounding, formation biobelt push-pull type fabric strip sound-membrane loudspeaker.
This scheme is formed two magnetic gap by 3 or the two pairs of magnetic pole plate arranged side by side and is constituted two and put strip permanent magnetic field.
When loud speaker set two and when putting strip permanent magnetic field and having the opposite magnetic fields direction (as two magnetic gap about constituting by 3 magnetic pole plate arranged side by side in left, center, right formed two and put strip permanent magnetic field), make about flowing through the tone currents of the lead in two fabric strip sound films anti-phase mutually; When loud speaker set two and when putting strip permanent magnetic field and having the same magnetic field direction (as magnetic pole plate arranged side by side constituted by two pairs two and put strip permanent magnetic field), make about flowing through the tone currents homophase of the lead in two fabric strip sound films.Like this, can make the interior electric current of all leads of two fabric strip sound films act on generation homophase electromagnetic actuation force mutually with magnetic field.
The present invention combines the material of soft ball top fabric sound film with the design concept of ribbon speaker, utilize one to be arranged in magnetic field fabric strip, some mutual series-parallel leads reach the direct whole result who drives of ribbon speaker, and can obtain suitable resistance value by the connection in series-parallel of these leads, be convenient to the direct coupling with power amplifier, save matching transformer.And the characteristic of fabric sound film and on colloid apply, good internal damping can be provided, realize graceful tone color.And guarantor's type ability is splendid after the thermal finalization of fabric sound film, can avoid the problem of the shock-resistant difference of aluminium strip.
Description of drawings
Fig. 1 is the structural representation of conventional aluminum ribbon speaker;
Fig. 2 is the structural representation of single fabric thin-belt type sound-membrane loudspeaker of the present invention;
Fig. 3 is the structural representation of biobelt push-pull type fabric strip sound-membrane loudspeaker.
Among the figure, the 1st, the strip magnetic pole, the 2nd, the strip aluminium foil strip that folds, the 3rd, matching transformer, the 4th, strip fabrics strip sound film, the 5th, lead is along its length distributing on the fabric strip sound film.
Embodiment
Embodiment one
As shown in Figure 1, this fabric thin-belt type sound-membrane loudspeaker, forming magnetic gap constitutes a strip permanent magnetic field side by side by the strip magnetic pole 1 of two different names, in this strip permanent magnetic field, be provided with a strip fabrics strip sound film 4, described strip fabrics strip sound film 4 is wide at 0.5 centimetre, the enamelled wire 5 (lead) of five 0.06 mm dias is advanced in braiding on the fabric strip of 10 centimeter length, shown in heavy line among the figure, and applies damping glue.This band is fixed on the individual layer printed wiring board of one 5 millimeters thick, five flat copper tinsel cord bar and pads are arranged on the plate, five enamelled wires in the band are welded to respective pad, make the full series connection shown in each enamelled wire formation figure link, make and in each lead 5, can produce the homophase tone currents when feeding audio signal, install then in the bar shaped magnetic field shown in the figure, be of a size of 0.5 centimetre high * 9 centimeter length of 0.8 centimetre wide *, magnetic direction is a Width.Can obtain the fabric thin-belt type high pitch loudspeaker that an impedance is about 8 Europe.If the size in fabric strip and magnetic field is scaled up, can obtain fabric thin-belt type Squawker and fabric thin-belt type woofer respectively.And the line of the lead that uses footpath also will change accordingly with quantity.
Embodiment two
As shown in Figure 3, present embodiment is a biobelt push-pull type fabric strip sound-membrane loudspeaker, by three strip magnetic poles 1 arranged side by side, form adjacent about two magnetic gap, about formation two and put strip permanent magnetic field, in two adjacent magnetic gap, two fabric strips 4 that apply through the damping glues are arranged, each is uniform through external circuit five leads 5 that link in every fabric strip 4, constitutes the load in one 8 Europe.The width of fabric strip sound film and length and conventional belt loud speaker are similar to be 0.5cm * 10cm, when the fabric strip sound film of feeding by power amplifier with audio signal, in five leads of every fabric strip sound film, can produce the homophase tone currents, this electric current is subjected to the action of a magnetic field of N → S and produces the actuating force of a homophase, because of two and put strip permanent magnetic field and have the opposite magnetic fields direction, suitable connection by external circuit, make the tone currents direction of two two groups of leads in the fabric strip sound film opposite, thereby make the in phase vibration of two fabric strips and sounding.The every lead here can be that many thin wires in the band are formed in parallel.
Claims (6)
1. fabric thin-belt type sound-membrane loudspeaker, have at least two strip synonyms pole plates arranged side by side relatively, form strip permanent magnetic field, it is characterized in that in strip permanent magnetic field, being provided with one by the fabric strip and in this band along its length and the fabric thin-belt type sound-membrane that some leads constituted of column distribution, each lead in the fabric strip connects with series connection or series-parallel system through external circuit, make when feeding audio signal, produce the homophase tone currents in each lead.
2. fabric thin-belt type sound-membrane loudspeaker according to claim 1, it is arranged side by side relatively to it is characterized in that described loud speaker is established two strip synonyms pole plates, forms a strip permanent magnetic field, establishes a fabric thin-belt type sound-membrane in this strip permanent magnetic field.
3. fabric thin-belt type loud speaker according to claim 1, it is characterized in that described loud speaker is provided with two and put strip permanent magnetic field, establish a described fabric thin-belt type sound-membrane in each strip permanent magnetic field, and the lead in two fabric strip sound films is continuous, the electric current in all leads of two fabric strip sound films acts on mutually with magnetic field and produces the homophase electromagnetic actuation force.
4. according to each described fabric thin-belt type sound-membrane loudspeaker in the claim 1 to 3, it is characterized in that described fabric thin-belt type sound-membrane is through thermal finalization.
5. according to each described fabric thin-belt type sound-membrane loudspeaker in the claim 1 to 3, it is characterized in that being coated with on the described fabric thin-belt type sound-membrane one deck glued membrane.
6. fabric thin-belt type sound-membrane loudspeaker according to claim 4 is characterized in that being coated with on the described fabric thin-belt type sound-membrane one deck glued membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100369727A CN1925694B (en) | 2005-09-02 | 2005-09-02 | Fabric thin-belt type sound-membrane loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100369727A CN1925694B (en) | 2005-09-02 | 2005-09-02 | Fabric thin-belt type sound-membrane loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1925694A CN1925694A (en) | 2007-03-07 |
| CN1925694B true CN1925694B (en) | 2011-09-21 |
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ID=37818083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100369727A Expired - Fee Related CN1925694B (en) | 2005-09-02 | 2005-09-02 | Fabric thin-belt type sound-membrane loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1925694B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107820167B (en) * | 2017-10-13 | 2020-09-01 | 何永斌 | High pitch diaphragm of belt loudspeaker and tensioning device thereof |
| CN108064010B (en) * | 2017-12-20 | 2020-10-09 | 何永斌 | Belt loudspeaker diaphragm that non-uniform width was cut apart |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2506046Y (en) * | 2001-08-27 | 2002-08-14 | 姚洪波 | Driver of belt type high frequency loudspeaker |
| CN2653829Y (en) * | 2003-09-27 | 2004-11-03 | 百富非凡机电设备（北京）有限公司 | Improved speaker vibration membrane base material member |
| CN1640187A (en) * | 2002-02-28 | 2005-07-13 | 古河电气工业株式会社 | Planar speaker |
-
2005
- 2005-09-02 CN CN2005100369727A patent/CN1925694B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2506046Y (en) * | 2001-08-27 | 2002-08-14 | 姚洪波 | Driver of belt type high frequency loudspeaker |
| CN1640187A (en) * | 2002-02-28 | 2005-07-13 | 古河电气工业株式会社 | Planar speaker |
| CN2653829Y (en) * | 2003-09-27 | 2004-11-03 | 百富非凡机电设备（北京）有限公司 | Improved speaker vibration membrane base material member |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1925694A (en) | 2007-03-07 |
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Granted publication date: 20110921 Termination date: 20140902 |
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