CN2464036Y - Mechanical frequency-dividing all audio frequency diaphragm - Google Patents
Mechanical frequency-dividing all audio frequency diaphragm Download PDFInfo
- Publication number
- CN2464036Y CN2464036Y CN 01205743 CN01205743U CN2464036Y CN 2464036 Y CN2464036 Y CN 2464036Y CN 01205743 CN01205743 CN 01205743 CN 01205743 U CN01205743 U CN 01205743U CN 2464036 Y CN2464036 Y CN 2464036Y
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- vibrating diaphragm
- compliant element
- mass elements
- frequency division
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Abstract
The utility model relates to a mechanical frequency-dividing vibrating diaphragm with full sound frequency, which is formed by that two to a plurality of sets of compliance elements and mass elements are bonded from outside to inside; in each set, the compliance elements are arranged outside; the inner edges of the compliance elements are bonded with the outer edges of the mass elements; in the most outer set, the outer edges of the compliance elements are bonded with a support frame; in the most inner set, the inner edges of the mass elements are bonded with a sound coil; the compliance components and the mass of the mass components are successively reduced from outer sets to inner sets. Under the action of a single magnetic circuit and driving force, the vibrating diaphragm of the utility model can radiate a sound with the full sound frequency; the utility model has the advantages of convenient operation and low cost; the utility model can be used for various sounding devices.
Description
The utility model belongs to the loud speaker field, and what be specifically related to is a kind of diaphragm of loudspeaker.
Traditional dynamic speaker mostly is conical diaphragm, its structure as shown in Figure 1, vibrating diaphragm is made of a compliant element 3 and a mass elements 2 (or claiming stiffener), compliant element 3 outside, but round shape pleat folding for the easy on and off motion, claim ring 3 again, be paper, cloth, foamed material, materials such as rubber are made, mass elements 2 is the cone of rigidity interior, claims awl basin 2 again, be paper, metal, material such as polypropylene or composite material is made, the outer rim of ring 3 and support 1 are bonding, and its inner rim is bonding with the outer rim of awl basin 2, and the inner edge of awl basin 2 is then bonding with the voice coil loudspeaker voice coil 4 that produces active force.Its principle as shown in Figure 2, under the effect of directed force F, mass elements M promptly 2 and compliant element C promptly 3 can obtain certain speed V, form vibration, produce sound.According to electricity, power analogy principle, Fig. 2 system can represent as Fig. 3 with admittance type circuit form, and in Fig. 3: V is a vibration velocity; F (j ω) is the suffered active force of system, is the function of frequency; M is a mass elements, also represents its numerical values recited simultaneously; C is a compliant element, represents its numerical values recited simultaneously, i.e. under the unit force effect, produce the size of displacement; ω=2 π f, f is a vibration frequency; J is an imaginary symbols, j
2=-1.Like this, a compliant element and a mass elements have constituted a machinery hand-pass filter, and its passband is fH-fL, sees Fig. 4, and among Fig. 4: fH is that system frequency response is high-end, and M, C are more little, and fH is high more; FL is the low side of system frequency response, and M, C are big more, and fH is low more.The vibrating diaphragm of conventional loudspeakers is because the restriction of material compliance and quality, the unit frequency response is difficult to cover whole audiorange 20-20000Hz, therefore, constituting complete audio playback systems often is made of two or more separate units, and cover whole tone frequently by Active crossover or Passive, and all need there be a cover independent magnetic circuit and a drives system each unit.
The purpose of this utility model is to provide a kind of and do not need Active crossover or Passive at the problems referred to above of traditional vibrating diaphragm existence, and only needs a unit can realize the diaphragm of loudspeaker of whole tone radio-frequency radiation.
The purpose of this utility model be achieved in that vibrating diaphragm ecto-entad of the present utility model by two to the array compliant element with mass elements is bonding forms, every group is made of a compliant element and a mass elements, each the group in compliant element outside, the outer rim of its inner rim and mass elements bonds together; The outer rim and the support of compliant element are bonding in one group of the outermost, and the inner edge and the voice coil loudspeaker voice coil of mass elements is bonding in interior one group; The compliance of compliant element and the quality of mass elements are by outer group of inwardly group reduction successively.
Technique effect of the present utility model is: because vibrating diaphragm of the present utility model constitutes to array compliance compliant element and the mass elements different with quality by two, each organizes compliant element and mass elements has promptly constituted the machinery hand-pass filter that the different frequency response range is arranged, therefore vibrating diaphragm of the present utility model system is under single magnetic circuit, single actuating force effect, go out whole tone sound frequently by mechanical frequency division is radiation-curable, use more convenient, cost is lower, can be widely used in various microphone devices.
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the section of structure of conventional loudspeakers vibrating diaphragm.
Fig. 2 is the simplification principle schematic of conventional loudspeakers vibrating diaphragm sounding.
Fig. 3 is the equivalent admittance type circuit diagram of Fig. 2.
Fig. 4 is the frequency response curve of band pass filter shown in Figure 3.
Fig. 5 is the section of structure of the utility model embodiment one.
Fig. 6 is the simplification principle schematic of embodiment one.
Fig. 7 is the equivalent admittance type circuit diagram of Fig. 6.
Fig. 8 is the section of structure of the utility model embodiment two.
As shown in Figure 5, embodiment one is a two divided-frequency full-band loudspeaker unit, comprises vibrating diaphragm and driver, and its vertical view is circular tabular.Its vibrating diaphragm ecto-entad is made up of two groups of compliant elements and mass elements, ecto-entad is followed successively by: circular foamed material ring 7, aluminium honeycomb plectane 5, circular papery ring 8, papery awl basin 6, the longitudinal section of wherein circular foamed material ring 7 and circular papery ring 8 is circular arc.The outer rim of above-mentioned circular foamed material ring 7 and fixed support 10 are bonding, the outer rim of its inner rim and aluminium honeycomb plectane 5 is bonding, the inner edge of aluminium honeycomb plectane 5 and the outer rim of circular papery ring 8 are bonding, the inner edge of circular papery ring 8 and papery awl basin 6 are bonding, and the inner edge of papery awl basin 6 and the voice coil loudspeaker voice coil 9 of driver are bonding.The compliance of circular foamed material ring 7 is greater than the compliance of circular papery ring 8 in the above-mentioned compliant element, and the quality of aluminium honeycomb plectane 5 is greater than the quality of papery awl basin 6 in the mass elements.The different numerical value of mass elements and compliant element in the utility model wait to determine according to desired index such as sensitivity, frequency bandwidth.
As shown in Figure 6 and Figure 7, circular foamed material ring 7 is that C1 and aluminium honeycomb plectane 5 are that M1 forms mechanical low pass filter, and circular papery ring 8 is that C2 and papery awl basin 6 are that M2 forms mechanical high pass filter, thereby forms whole tone vibrating diaphragm system frequently.
As shown in Figure 8, embodiment two is a three frequency division planar square loud speaker, integral body is overlooked and is square plate, its vibrating diaphragm ecto-entad is made up of three groups of compliant elements and mass elements, ecto-entad is followed successively by: whole is that square longitudinal section is the rubber ring 17 of groove shaped, larger area square aluminum honeycomb flat board 11, whole is that square longitudinal section is the cloth matter ring 16 of groove shaped, the square aluminum honeycomb flat board 12 of middle homalographic, whole is that square longitudinal section is the papery ring 15 of groove shaped, square aluminum honeycomb flat board 13 than small size, their ecto-entads order is bonding, the outer rim of rubber ring 17 and fixed support 18 are bonding, and be bonding than the voice coil loudspeaker voice coil 14 of the inner edge of the square aluminum honeycomb flat board 13 of small size and driver.In the above-mentioned compliant element, diminish successively by the groove ecto-entad of rubber ring 17, cloth matter ring 16, papery ring 15, compliance diminishes gradually; In the above-mentioned mass elements, the area ecto-entad diminishes successively, and quality diminishes successively.Compliant element that outermost is one group and mass elements radiation bass, middle one group compliant element and mass elements radiation middle pitch, interior one group compliant element and mass elements radiation high pitch, thus form whole tone vibrating diaphragm system frequently.Above-mentioned " than large tracts of land ", " middle homalographic ", " than small size " are only for mass elements.
Activation configuration among embodiment one and the embodiment two all adopts prior art, and is irrelevant with the invention, do not describe in detail at this.
If on the basis of embodiment two, increase by one group of mass elements and compliant element again, then constitute mechanical four frequency division vibrating diaphragms, by that analogy, increase mass elements and compliant element again, can obtain mechanical five frequency divisions, six frequency divisions ... nine frequency division vibrating diaphragms, accurately numerical value can obtain according to calculating and experiment, in practice, mechanical two divided-frequency vibrating diaphragm or mechanical three frequency division vibrating diaphragm just can radiation whole tone sound frequently.
The material of compliant element and mass elements can adopt the material that traditional vibrating diaphragm adopts in the utility model.
The existing diaphragm of loudspeaker is a conical structure, mass elements can be tabular or coniform in the utility model, thereby the shape of vibrating diaphragm can be designed to the combined shaped of tabular, coniform or dull and stereotyped, circular cone, vibrating diaphragm as embodiment one is a combined shaped dull and stereotyped and circular cone, the vibrating diaphragm of embodiment two is a tabular, can determine the physical dimension of loud speaker whereby according to the application scenario, can reduce the thickness of existing loud speaker, realize ultra-thinization as using the tabular vibrating diaphragm.
Claims (8)
1. mechanical frequency division whole tone vibrating diaphragm frequently, constitute by compliant element and stiffener, it is characterized in that: the vibrating diaphragm ecto-entad is by two to the array compliant element with mass elements is bonding forms, in each group compliant element outside, the outer rim of its inner rim and mass elements bonds together; The outer rim and the support of compliant element are bonding in one group of the outermost, and the inner edge and the voice coil loudspeaker voice coil of mass elements is bonding in interior one group; The compliance of compliant element and the quality of mass elements are by outer group of inwardly group reduction successively.
2. mechanical frequency division whole tone according to claim 1 is vibrating diaphragm frequently, it is characterized in that: the group number of described compliant element and mass elements be two or three groups preferable.
3. mechanical frequency division whole tone according to claim 1 is vibrating diaphragm frequently, and it is characterized in that: the longitudinal section of each compliant element is a circular arc.
4. mechanical frequency division whole tone according to claim 1 is vibrating diaphragm frequently, and it is characterized in that: the longitudinal section of each compliant element is a groove shaped.
5. mechanical frequency division whole tone according to claim 4 is vibrating diaphragm frequently, and it is characterized in that: the groove of compliant element diminishes successively by outer group inside group.
6. mechanical frequency division whole tone according to claim 1 is vibrating diaphragm frequently, and it is characterized in that: single mass elements is a tabular or coniform.
7. mechanical frequency division whole tone according to claim 1 is vibrating diaphragm frequently, it is characterized in that: material selection rubber, cloth, foamed material or the paper of described compliant element.
8. mechanical frequency division whole tone according to claim 1 is vibrating diaphragm frequently, it is characterized in that: material selection paper, metal, polypropylene or the composite material of described mass elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01205743 CN2464036Y (en) | 2001-02-22 | 2001-02-22 | Mechanical frequency-dividing all audio frequency diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01205743 CN2464036Y (en) | 2001-02-22 | 2001-02-22 | Mechanical frequency-dividing all audio frequency diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2464036Y true CN2464036Y (en) | 2001-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01205743 Expired - Fee Related CN2464036Y (en) | 2001-02-22 | 2001-02-22 | Mechanical frequency-dividing all audio frequency diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2464036Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102149037A (en) * | 2011-05-16 | 2011-08-10 | 徐清华 | Digital loudspeaker |
| CN103109547A (en) * | 2010-02-26 | 2013-05-15 | Pss比利时股份有限公司 | Mass loading for piston loudspeakers |
-
2001
- 2001-02-22 CN CN 01205743 patent/CN2464036Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103109547A (en) * | 2010-02-26 | 2013-05-15 | Pss比利时股份有限公司 | Mass loading for piston loudspeakers |
| CN103109547B (en) * | 2010-02-26 | 2015-11-25 | Pss比利时股份有限公司 | A kind of speaker diaphragm with quality load |
| CN102149037A (en) * | 2011-05-16 | 2011-08-10 | 徐清华 | Digital loudspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |