CN107809709B - Closed-cell foam electric loudspeaker - Google Patents
Closed-cell foam electric loudspeaker Download PDFInfo
- Publication number
- CN107809709B CN107809709B CN201711304893.9A CN201711304893A CN107809709B CN 107809709 B CN107809709 B CN 107809709B CN 201711304893 A CN201711304893 A CN 201711304893A CN 107809709 B CN107809709 B CN 107809709B
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- ring
- closed
- cell foam
- edge
- voice coil
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Abstract
The invention relates to a closed-cell foam electric loudspeaker, which comprises a base body, a magnet, a folded ring body, a voice coil body, a substrate film, a closed-cell foam plate, an anode wiring terminal and a cathode wiring terminal, wherein the magnet is arranged in an installation concave cavity of the base body, the folded ring body is of a folded ring body structure which is formed by overlapping an upper semi-ring body and a lower semi-ring body and is provided with a hollow annular channel, the closed-cell foam plate and the substrate film are mutually overlapped and assembled together and are arranged in a concave cavity hole of the folded ring body together to form a closed-cell foam vibration basin of the loudspeaker, the closed-cell foam vibration basin is arranged in the concave cavity groove of the base body through the connection of the outer ring edge of the folded ring body and the groove wall of the concave cavity groove, the voice coil body is arranged between the closed-cell foam vibration basin and the magnet, and the anode wiring terminal and the cathode wiring terminal are electrically connected with the voice coil body through wires. The invention has the characteristics of good frequency response, good sound fidelity, low distortion, good sensitivity and the like, and further has excellent sound reproduction quality and excellent durability.
Description
Technical Field
The invention relates to the field of sound equipment, in particular to an electrodynamic loudspeaker.
Background
The existing electric loudspeaker has the largest market possession of cone-basin loudspeakers, and the application technology and the production process are the most mature. The diaphragm material of cone basin speaker is mainly pulp material, in order to increase its rigidity, internal damping and water-proof property, the pulp is often doped with wool or kapok, silk, carbon fiber, flax, etc. The material characteristics of the existing cone basin loudspeaker are difficult to further and greatly improve the sound reproduction quality even though the basin structure or the structure of the existing cone basin loudspeaker is improved.
Currently, another type of electrodynamic speaker is a flat panel electrodynamic speaker proposed by NXT corporation. The sound-producing vibration principle of the flat-plate type electrodynamic loudspeaker is completely different from that of the traditional cone-basin loudspeaker, and the flat-plate type electrodynamic loudspeaker is characterized in that a small driver is adhered to a special flat plate and at a special appointed relevant position, and when the driver is conductive, the driver drives the flat plate to produce wave-type vibration to conduct sound. The transduction plane plate of the flat plate type electrodynamic loudspeaker mainly comprises a honeycomb plate, a sandwich plate and a pulp plate. The honeycomb board has the best sound returning effect, but the relative cost is also the highest; secondly, a sandwich board is adopted; the pulp board is made of similar materials as the cone of the traditional loudspeaker, and has low price, but relatively poor sound quality.
The shortcomings of flat panel electrodynamic loudspeakers are mainly manifested in two ways: (1) insufficient low frequency response. Because the NXT loudspeaker is designed in a wave-type vibration mode, the quantity of air pushed by the NXT loudspeaker is limited, so that low-frequency energy is insufficient, only medium-high frequency of about 100Hz-18kHz can be emitted, and people often feel bright, surplus and soft and insufficient. A low-frequency sound box is generally required to be equipped to complete low-frequency sound reproduction below 100 Hz. In terms of the current effect, the connection of the subwoofer and the flat-panel speaker is not satisfactory, and the requirements of the tone quality and tone color distance Hi-Fi fever friends are also large. (2) the sound quality is to be improved. Because the NXT flat-panel loudspeaker can make independent random vibration sound production instead of rigid synchronous vibration on a plate surface after being excited, the restored sound has certain quality but certain distortion, so the NXT flat-panel loudspeaker has not been stepped into the high-fidelity sound field so far, and the sound quality of the NXT flat-panel loudspeaker needs to be further improved.
The Chinese patent application No. CN201110217241.8 discloses a patent document, and the inventor Xu Qinghua is in the same aim of providing a closed cell foam board which is applied to the acoustic field for the first time, and a closed cell foam material has great effects on sound wave conduction and radiation characteristics, active noise reduction in the sound wave conduction process, and sound fidelity improvement. However, in view of the time hurdles at the time, specific acoustic products that can be implemented have not been developed.
Disclosure of Invention
The invention aims to solve the problems and the shortcomings, and provide a closed-cell foam electric loudspeaker which has the characteristics of good frequency response, good sound fidelity, low distortion, good sensitivity and the like through the comprehensive application of a special folded ring body structure, a substrate film, a closed-cell foam board and the like, and further has excellent sound reproduction quality and excellent durability.
The technical scheme of the invention is realized as follows: the closed-cell foam electric loudspeaker comprises a base body, a magnet, a folded ring body, a voice coil body, a substrate film, a closed-cell foam plate, an anode wiring terminal and a cathode wiring terminal, wherein the base body is provided with a concave cavity groove, the bottom of the concave cavity groove is also provided with a mounting concave cavity, and the magnet is mounted in the mounting concave cavity; the ring folding body is of a ring folding body structure with a hollow ring channel, and the ring folding body is formed by overlapping an upper ring half body and a lower ring half body; a concave ring cavity hole is formed in the middle of the folded ring body; the closed-cell foam plate and the substrate film are mutually overlapped and assembled together and are arranged in the concave ring cavity hole of the ring-folded body together to form a closed-cell foam vibration basin body of the loudspeaker; the outer annular wall of the folded ring body is also provided with an outer annular edge, and the closed-pore foam vibration basin body is arranged in the concave cavity groove of the base body through the connection of the outer annular edge of the folded ring body and the groove wall of the concave cavity groove; the voice coil body is arranged between the closed-pore foam vibration basin body and the magnet, the upper end of the voice coil body is connected with the bottom surface of the substrate film, and the lower end of the voice coil body is connected with the magnet; the positive binding post, negative binding post set up respectively on the lateral surface of pedestal, and this positive binding post, negative binding post pass through electric wire and voice coil body electricity and be connected.
In order to make the ring folding body have the characteristics of simple structure, easy, the simple production of processing, still be equipped with the semi-ring outward flange on the outer rampart of upper semi-ring body, still be equipped with the semi-ring outward flange down on the outer rampart of semi-ring down, the semi-ring outward flange overlaps together with the semi-ring outward flange down to be provided with the spacer ring spare between the semi-ring outward flange and the semi-ring outward flange down, so constitute outer limit together.
In order to enable the closed-cell foam vibration basin body to be simply and conveniently fixedly arranged in the base body, the base body is composed of an upper cover ring and a lower base which are mutually nested and assembled together, a clamping ring groove is formed between the upper cover ring and the lower base, and the closed-cell foam vibration basin body is arranged in the base body by being clamped in the clamping ring groove between the upper cover ring and the lower base through the outer ring edge of the closed-cell foam vibration basin body; the concave cavity groove and the mounting concave cavity are respectively arranged on the lower base.
In order to enable the closed-cell foam plate and the substrate film to be simply, conveniently and firmly installed in the folded ring body, an upper inner edge is further arranged on the inner side of the upper half ring body, a lower inner edge is further arranged on the inner side of the lower half ring body, the upper inner edge and the lower inner edge are mutually overlapped to form an inner edge supporting ring edge, and the substrate film is embedded on the inner edge supporting ring edge through the peripheral edge of the substrate film to be assembled in the concave ring cavity hole.
The invention has the beneficial effects that: the invention adopts the vibrating diaphragm structure of the electrodynamic loudspeaker which is composed of the folded ring body, the substrate film, the closed-cell foam plate and the like, and has the advantages of excellent sound wave conduction and radiation characteristics by virtue of excellent structural design and light weight of the closed-cell foam plate, so that the loudspeaker can play an excellent active noise reduction role, has the characteristics of excellent frequency response, good sound fidelity, low distortion, excellent sensitivity and the like, and further has excellent sound reproduction quality and excellent durability. In addition, the invention has the advantages of no technical difficulty and no problem in implementation and reproduction by careful structural design, thereby greatly saving about implementation cost and improving implementation efficiency.
Drawings
Fig. 1 is a schematic cross-sectional view of a first embodiment of the present invention.
Fig. 2 is a schematic cross-sectional structure of a second embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of the ring body of the present invention.
Fig. 4 is a schematic view of the exploded state of fig. 3 according to the present invention.
FIG. 5 is a schematic cross-sectional view of the substrate film of the present invention assembled with a closed cell foam panel.
Fig. 6 is a schematic view of the exploded state of fig. 5 according to the present invention.
Fig. 7 is a schematic cross-sectional view of a base of the present invention.
Fig. 8 is a schematic cross-sectional structure of a magnet of the present invention.
Detailed Description
As shown in fig. 1 and 2, the closed-cell foam electrodynamic loudspeaker of the present invention comprises a base 1, a magnet 2, a folded ring 3, a voice coil 4, a substrate film 5, a closed-cell foam board 6, a positive electrode terminal 30, and a negative electrode terminal 40, wherein
As shown in fig. 7, the base 1 is provided with a concave cavity groove 11, a mounting concave cavity 12 is further arranged at the bottom of the concave cavity groove 11, and the magnet 2 is mounted in the mounting concave cavity 12.
As shown in fig. 1, 2 and 3, the ring body 3 is a ring body structure formed by stacking an upper ring body 31 and a lower ring body 32 together and having a hollow ring channel 33; a concave ring cavity hole 34 with an inner edge supporting ring edge 50 is also formed in the middle part of the folded ring body 3.
As shown in fig. 5, 1 and 2, the closed-cell foam board 6 and the base board film 5 are assembled together in a stacked manner, and are mounted in the concave cavity 34 of the folded ring body 3 together to form the closed-cell foam vibration basin 7 of the speaker.
As shown in fig. 1, 2 and 3, the outer annular wall of the folded ring body 3 is further provided with an outer annular edge 35, and the closed-cell foam vibration basin 7 is installed in the concave groove 11 of the base body 1 through the connection between the outer annular edge 35 of the folded ring body 3 and the groove wall of the concave groove 11.
As shown in fig. 1 and 2, the voice coil body 4 is disposed between the closed-cell foam vibration tub 7 and the magnet 2, and the upper end of the voice coil body 4 is connected to the bottom surface of the substrate film 5, and the lower end of the voice coil body 4 is connected to the magnet 2.
As shown in fig. 1, 2 and 7, the positive terminal 30 and the negative terminal 40 are respectively disposed on the outer side surface of the base 1, and the positive terminal 30 and the negative terminal 40 are electrically connected to the voice coil body 4 by wires.
Through the series of careful and scientific structural designs, the invention has no technical difficulty and problems in implementation and reproduction, thus greatly saving about implementation cost and improving implementation efficiency.
In order to make the folded ring body simple in structure, easy to manufacture and produce, as shown in fig. 3 and 4, an upper half ring outer edge 36 is further provided on the outer ring wall of the upper half ring body 31, a lower half ring outer edge 37 is further provided on the outer ring wall of the lower half ring body 32, the upper half ring outer edge 36 and the lower half ring outer edge 37 are overlapped together, and a spacer ring 8 is provided between the upper half ring outer edge 36 and the lower half ring outer edge 37, so as to form an outer ring edge 35 together. By such design, the periphery of the whole closed-cell foam vibration basin body 7 has stronger structural strength, so that the closed-cell foam vibration basin body can be firmly and reliably clamped on the base body 1.
In order to enable the closed-cell foam vibration basin body 7 to be simply and conveniently fixedly installed in the base body, as shown in fig. 1, 2 and 7, the base body 1 is composed of an upper cover ring 9 and a lower base 10 which are mutually nested and assembled, a clamping ring groove 20 is formed between the upper cover ring 9 and the lower base 10, and the closed-cell foam vibration basin body 7 is installed in the base body 1 by clamping an outer ring edge 35 of the closed-cell foam vibration basin body 7 in the clamping ring groove 20 between the upper cover ring 9 and the lower base 10; the concave cavity groove 11 and the installation concave cavity 12 are respectively arranged on the lower base 10. In order to facilitate the wiring and connection of the present invention to the voice coil body 4, and to minimize the influence during the assembly process, as shown in fig. 7, the positive terminal 30 and the negative terminal 40 are respectively disposed on the side wall of the upper cover ring 9, and the positive terminal 30 and the negative terminal 40 respectively penetrate through the side wall of the upper cover ring 9 and the side wall of the lower base 10 and are electrically connected to the voice coil body 4 through the electric wire 60.
For saving production materials for the weight of the whole speaker unit product, as shown in fig. 7, the bottom surface of the lower chassis 10 is further provided with a through hole 101 penetrating the mounting cavity 12.
In order to further optimize the assembly structure of the upper half ring body 31 and the lower half ring body 32, as shown in fig. 4, an upper inner edge 38 is further provided on the inner side of the upper half ring body 31, a lower inner edge 39 is further provided on the inner side of the lower half ring body 32, the upper inner edge 38 and the lower inner edge 39 are mutually stacked to form an inner edge supporting ring edge 50, and the substrate film 5 is embedded on the inner edge supporting ring edge 50 through the peripheral edge thereof to be assembled in the concave ring cavity hole 34.
In order to fix the lower end of the voice coil body 4 to the magnet 2 simply and conveniently, as shown in fig. 8, a voice coil fitting ring groove 21 is further provided on the magnet 2, and the lower end of the voice coil body 4 is fitted in the voice coil fitting ring groove 21. Similarly, in order to facilitate the top placement of the upper end of the voice coil body 4 on the bottom surface of the closed-cell foam vibration basin 7, as shown in fig. 5 and 6, the bottom surface of the base plate film 5 is provided with a concave surface 51, the top surface of the base plate film 5 is provided with an embedded concave cavity 52, the bottom surface of the closed-cell foam plate 6 is correspondingly provided with a bottom surface structure 61 which is embedded in the concave surface 51, the closed-cell foam plate 6 is overlapped in the embedded concave cavity 52 of the base plate film 5 in an anastomotic manner, and the upper end of the voice coil body 4 is embedded in the concave surface 51 of the base plate film 5.
In order to make the speaker unit have better directivity, as shown in fig. 6, the top surface of the closed-cell foam board 6 is further provided with an arc concave surface 62, and the arc concave surface 62 has a certain aggregation effect, so that the sound has better directivity.
Claims (9)
1. A closed cell foam electrodynamic loudspeaker characterized by: comprises a seat body (1), a magnet (2), a folded ring body (3), a voice coil body (4), a substrate film (5), a closed-pore foam board (6), a positive electrode binding post (30) and a negative electrode binding post (40), wherein
The base body (1) is provided with a concave cavity groove (11), the bottom of the concave cavity groove (11) is also provided with a mounting concave cavity (12), and the magnet (2) is mounted in the mounting concave cavity (12);
the ring folding body (3) is a ring folding body structure which is formed by superposing an upper half ring body (31) and a lower half ring body (32) and is provided with a hollow annular channel (33); a concave ring cavity hole (34) with an inner edge supporting ring edge (50) is also formed in the middle part of the folded ring body (3);
the closed-cell foam plate (6) and the base plate film (5) are mutually overlapped and assembled and are arranged in the concave annular cavity (34) of the folded ring body (3) together to form a closed-cell foam vibration basin body (7) of the loudspeaker;
an outer annular edge (35) is further arranged on the outer annular wall of the folded ring body (3), and the closed-pore foam vibration basin body (7) is arranged in the concave cavity groove (11) of the base body (1) through the connection of the outer annular edge (35) of the folded ring body (3) and the groove wall of the concave cavity groove (11);
the voice coil body (4) is arranged between the closed-pore foam vibration basin body (7) and the magnet (2), the upper end of the voice coil body (4) is connected with the bottom surface of the substrate film (5), and the lower end of the voice coil body (4) is connected with the magnet (2);
the positive electrode binding post (30) and the negative electrode binding post (40) are respectively arranged on the outer side face of the base body (1), and the positive electrode binding post (30) and the negative electrode binding post (40) are electrically connected with the voice coil body (4) through wires.
2. The closed cell foam electrodynamic loudspeaker of claim 1, wherein: the outer annular wall of the upper semi-annular body (31) is also provided with an upper semi-annular outer edge (36), the outer annular wall of the lower semi-annular body (32) is also provided with a lower semi-annular outer edge (37), the upper semi-annular outer edge (36) and the lower semi-annular outer edge (37) are overlapped together, and a separation ring (8) is arranged between the upper semi-annular outer edge (36) and the lower semi-annular outer edge (37) so as to form an outer annular edge (35) together.
3. The closed cell foam electrodynamic loudspeaker of claim 2, wherein: the closed-cell foam vibration basin body (7) is clamped in the clamping ring groove (20) between the upper cover ring (9) and the lower base (10) through an outer ring edge (35) of the closed-cell foam vibration basin body so as to be mounted in the base body (1); the concave cavity groove (11) and the installation concave cavity (12) are respectively arranged on the lower base (10).
4. A closed cell foam electrodynamic loudspeaker as claimed in claim 3, wherein: the positive electrode binding post (30) and the negative electrode binding post (40) are respectively arranged on the side wall of the upper cover ring (9), and the positive electrode binding post (30) and the negative electrode binding post (40) respectively penetrate through the side wall of the upper cover ring (9) and the side wall of the lower base (10) and are electrically connected with the voice coil body (4) through wires.
5. A closed cell foam electrodynamic loudspeaker as claimed in claim 3, wherein: the bottom surface of the lower base (10) is also provided with a through hole (101) penetrating through the mounting concave cavity (12).
6. The closed cell foam electrodynamic loudspeaker of claim 2, wherein: the inner side of the upper semi-ring body (31) is also provided with an upper inner edge (38), the inner side of the lower semi-ring body (32) is also provided with a lower inner edge (39), the upper inner edge (38) and the lower inner edge (39) are mutually overlapped to form an inner edge supporting ring edge (50), and the substrate film (5) is embedded on the inner edge supporting ring edge (50) through the peripheral edge of the substrate film to be assembled in the concave ring cavity hole (34).
7. The closed cell foam electrodynamic loudspeaker of claim 1, wherein: the magnet (2) is also provided with a voice coil embedded ring groove (21), and the lower end of the voice coil body (4) is embedded in the voice coil embedded ring groove (21).
8. The closed cell foam electrodynamic loudspeaker of claim 1, wherein: the bottom surface of base plate membrane (5) is equipped with concave surface (51), and the top surface of this base plate membrane (5) is equipped with inlays and adorns cavity (52), the bottom surface of obturator foam board (6) is equipped with corresponding bottom surface structure (61) that coincide with concave surface (51) and inlay, and this obturator foam board (6) coincide the pile up in inlays cavity (52) of base plate membrane (5), the upper end of voice coil body (4) inlays in concave surface (51) of base plate membrane (5).
9. The closed cell foam electrodynamic loudspeaker of claim 1, wherein: the top surface of the closed-cell foam plate (6) is also provided with an arc-shaped concave surface (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711304893.9A CN107809709B (en) | 2017-12-11 | 2017-12-11 | Closed-cell foam electric loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711304893.9A CN107809709B (en) | 2017-12-11 | 2017-12-11 | Closed-cell foam electric loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107809709A CN107809709A (en) | 2018-03-16 |
| CN107809709B true CN107809709B (en) | 2023-08-01 |
Family
ID=61589851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711304893.9A Active CN107809709B (en) | 2017-12-11 | 2017-12-11 | Closed-cell foam electric loudspeaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN107809709B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202488684U (en) * | 2012-01-14 | 2012-10-10 | 天津英安达科技有限公司 | panel diaphragm with center holes |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU5685894A (en) * | 1992-12-08 | 1994-07-04 | Linaeum Corporation | Audio transducer with flexible foam enclosure |
| US8270660B2 (en) * | 2006-07-03 | 2012-09-18 | Pioneer Corporation | Speaker device and speaker unit |
| CN201663651U (en) * | 2010-02-08 | 2010-12-01 | 深圳市辉煌电子有限公司 | Transparent sounding-medium electric flat-panel loudspeaker |
| GB2488758A (en) * | 2011-03-02 | 2012-09-12 | Gp Acoustics Uk Ltd | Bass reflex loudspeaker has acoustic leakage in walls of port duct |
| CN202488685U (en) * | 2012-01-14 | 2012-10-10 | 天津英安达科技有限公司 | Ultra-thin double folded-ring flat loudspeaker without U-shaped iron |
| CN207652687U (en) * | 2017-12-11 | 2018-07-24 | 佛山市柯博明珠数码电子有限公司 | A kind of closed-cell foam dynamic speaker |
-
2017
- 2017-12-11 CN CN201711304893.9A patent/CN107809709B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202488684U (en) * | 2012-01-14 | 2012-10-10 | 天津英安达科技有限公司 | panel diaphragm with center holes |
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| CN107809709A (en) | 2018-03-16 |
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