CN2439759Y - Loudspeaker with novel vibration device - Google Patents
Loudspeaker with novel vibration device Download PDFInfo
- Publication number
- CN2439759Y CN2439759Y CN 00237932 CN00237932U CN2439759Y CN 2439759 Y CN2439759 Y CN 2439759Y CN 00237932 CN00237932 CN 00237932 CN 00237932 U CN00237932 U CN 00237932U CN 2439759 Y CN2439759 Y CN 2439759Y
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- Prior art keywords
- basin
- voice coil
- awl
- ripple
- elastic wave
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Abstract
The utility model provides a loudspeaker with a novel vibration device, which comprises a cone basin (3), a basin stand (7), a magnetic conducting post (16), a dangling edge (2), a speech coil (10) and a first elastic wave (401). The surface position of the cone basin is provided with a second elastic wave (402), and a phase plug (14) is arranged on the magnetic conducting post. An inner hole of the second elastic wave is connected with the phase plug, and the outer end of the second elastic wave is connected with the surface of the cone basin. The installation of the second elastic wave enhances the restoring force of the elastic waves, an elastic wave system has good symmetry and firm sound basin positioning effect, the speech coil which is always positioned at the center of a magnetic gap can be kept when the utility model has high-power driving, and the loudspeaker reduces the harmonic distortion for three times.
Description
The utility model relates to the electroacoustic transduction equipment technical field, is specifically related to a kind of loudspeaker vibration device.
Electrodynamic loudspeaker is the interaction force that utilizes between live conductor (voice coil loudspeaker voice coil) and the stationary magnetic field, and the diaphragm that is fixed on voice coil loudspeaker voice coil one end is vibrated and sounding.Tradition awl basin loudspeaker comprises the vibrational system of being made up of outstanding limit 2, awl basin 3, voice coil loudspeaker voice coil 10 and bullet ripple 4 (also claiming centring disk) etc. as shown in Figure 1; The magnetic circuit system of forming by permanent magnet 12, magnetic conductive board 9 and stem stem 11 etc.; By the auxiliary system that basin frame 7, terminal block 8, flanging 1 and dust cap 5 etc. are formed, wherein critical piece is awl benzvalene form diaphragm, voice coil loudspeaker voice coil, support and magnetic circuit.For improving loud speaker sound reproduction index, the current the following aspects that is primarily aimed at is improved: (1) is to the improvement of magnetic structure, as patent 98229472; (2) utilization novel materials, as superpower magnet " neodymium iron boron ", new-type composite diaphragm " bulletproof cloth, liquid crystal polymer, polypropylene or the like "; (3) to the improvement of vibrational structure, as patent 98234510, it plays ripple and adopts " O " shape structure.
Suspended portion in any loudspeaker unit vibrational system all comprises two primary elements---outstanding limit 2 and bullet ripple 4.Outstanding limit 2 helps holding unit awl basin 3 centrings and provides a part of restoring force can also provide the damping at awl basin edge simultaneously among the magnetic conduction gap with holding unit voice coil loudspeaker voice coil 10; The outer end that plays ripple 4 links to each other with speaker frame 7, endoporus and voice coil loudspeaker voice coil 10 and awl basin 3 bond together mutually, it is used for keeping the tram of voice coil loudspeaker voice coil in the loud speaker magnetic air gap, makes unit voice coil loudspeaker voice coil 10 aim at the central authorities of conducting magnetic columns and provides voice coil loudspeaker voice coil to remain on restoring force among the magnetic conduction gap.
By outstanding limit 2 and the translational speed that plays ripple 4 formed rigidity or compliance meeting cone of influence basin, for the whole compliances of loud speaker, play ripple and provide 80% approximately, promptly provide loudspeaker unit main restoring force.Yet the flintiness that plays ripple also influences the resonance frequency fs of loudspeaker unit simultaneously, and fs is the function of compliance and quality, and its relation is: and fs=[6.28 (Cs * Md)
1/2]
-1(wherein Cs is the compliance of unit drives part, and Md is the total weight of unit drives part), promptly resonance frequency fs and compliance Cs and unit drives part gross weight are inversely proportional to.
Optimal suspension should be to be provided at constant restoring force in the moving range, yet in fact exist abnormal phenomena---the oil tank effect that voice coil loudspeaker voice coil is dynamically offset, this unit voice coil loudspeaker voice coil in unit drives when limiting and the counteracting that produces near maximum linear displacement Xmax, belong to a kind of nonlinear phenomenon---when voice coil loudspeaker voice coil moves to that more the multi-turn number leaves the position of magnetic gap, magnetic energy product BL value reduces, back electromotive force reduces, voice coil loudspeaker voice coil injects more electric current, and it is farther and cause third harmonic distortion even voice coil loudspeaker voice coil to be pushed away magnetic gap.
The inertia damping vibration that patent 98234510 is produced in order to end the vibrating diaphragm motion, and adopt " O " shape structure bullet ripple.This hollow structure makes that the manufacture craft that plays ripple is very complicated, and the processing cost height is incompatible with existing bullet ripple standard fitting, and its effect that suppresses the inertia damping vibration is unsatisfactory.Do not have improving of essence for the nonlinear characteristic under the large amplitude motion state in addition, the fastness of sound basin location is not strengthened yet simultaneously.
The purpose of this utility model is exactly in order to overcome the deficiencies in the prior art, improves above-mentioned nonlinear distortion characteristics, and proposes a kind of two-way pair of bullet wave structure.
To achieve these goals, the utility model loud speaker comprises
Awl basin, basin frame;
Place the conducting magnetic column at awl basin and basin frame center;
Be connected with awl basin one end (large awl end) and be fixed on outstanding limit on the basin frame;
Be connected with the awl basin other end (conelet end) and place voice coil loudspeaker voice coil between magnetic gap;
First plays ripple, and its endoporus and voice coil loudspeaker voice coil and awl basin bond together mutually, and the outer end links to each other with the basin frame;
It is characterized in that, be provided with second at the surface location of boring basin and play ripple, and phase plug is set on conducting magnetic column that second plays the ripple endoporus links to each other with phase plug, the outer end links to each other with awl basin surface.
Second plays being provided with of ripple has increased the restoring force that plays ripple, can make bullet wave system system that better symmetry and more firm sound basin locating effect are arranged, the sound basin waves phenomenon in the time of can preventing large amplitude, can keep voice coil loudspeaker voice coil to be positioned at the center of magnetic gap all the time when high-power driving, third harmonic distortion can reduce like this.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the cardinal principle structure chart of prior art loud speaker;
Fig. 2 is the principle assumption diagram of the utility model loud speaker.
The speaker unit of two-way pair of bullet wave structure of the utility model as shown in Figure 2.Magnetic circuit system mainly is made up of magnetic conductive board 9, main magnet 15, conducting magnetic column (T iron) 16, secondary magnetic 17; Vibrational system mainly is made up of awl basin 3, voice coil loudspeaker voice coil 10, outstanding limit 2, bullet ripple 401, bullet ripple 402, phase plug 14.Auxiliary system comprises flanging 1, basin frame 7, submissive lead-in wire 6, binding post 8 etc.
A metal phase plug 14 (as the metallic aluminium cylinder) is installed on conducting magnetic column 16, and the outer end is fixed on the bullet ripple 402 on awl basin surface, and its endoporus is fixed on the phase plug 14.
The increase that plays ripple 402 can make vibrational system that better symmetry and more firm awl basin locating effect are arranged, the stationary plane of awl basin increases to three (awl basins 3 and the stationary plane that plays ripple 401 by two (awl basins 3 and the stationary plane of the stationary plane that plays ripple 401 with awl basin edge and outstanding limit 2), the stationary plane on awl basin edge and outstanding limit 2, play ripple 402 and the stationary plane of boring basin 3), like this under bigger linear displacement Xmax state, the restoring force that plays ripple strengthens greatly, non-linear minimizing when just playing wave motion, when guaranteeing high-flexibility (low fs), increased the restoring force that plays ripple again, the transient response characteristic good of unit.
When the diameter of the first bullet ripple 401 and the second bullet ripple 402 is consistent is best, and the symmetry that plays wave motion this moment is the best.
On the conducting magnetic column structure of metal cylinder phase plug 14 can with the structural equivalents of short-circuited conducting sleeve.The short circuit fourth finger adds copper (aluminium) cover or adds the mode of copper (aluminium) ring at the inner ring of magnetic conductive board in the outer ring of unit conducting magnetic column, effect is a non-linear relation of improving magnetic circuit, thereby reaches the purpose that reduces harmonic distortion; Promptly can produce the eddy current (metal cylinder plays the secondary coil effect of voice coil loudspeaker voice coil) that opposite same intensity magnetic field comes the offset magnetic field modulation to be produced by the induction of voice coil loudspeaker voice coil 10.Because the effect of short circuit reduces the inductance value of voice coil loudspeaker voice coil 10, has improved the high frequency response characteristic of unit, helps to promote tonequality, this equivalent short-circuit ring structure makes magnetic material nonlinear inductance quantitative changeization little simultaneously, and the harmonic distortion of unit is reduced.In addition since the awl basin when high frequency, tend to by trend near the area radiation at center, play the negative effect that wave radiation is brought in order to reduce awl basin surface, the top of metal cylinder cooperates the characteristic of awl basin high frequency response (the high-end response of unit frequency response), be designed to the spill outward appearance, can making the high-end Frequency Response of unit, very desirable (high frequency attenuation presents the curve that the nature transition is roll-offed, do not have too much peak valley to rise and fall), help the improvement of tone color.Metal cylinder has played the surperficial composite action that plays ripple, equivalent magnetic circuit short-circuited conducting sleeve and improve the phase characteristic of unit high frequency response of fixed cone basin in sum.
(quality that promptly promotes air is big more to cooperate the wide outstanding limit of long radius, long voice coil can effectively improve the Xmax of unit in the practical application, the amount sense of low frequency is also many more, the rated power that also promptly bears is big more), adopt two-way two ripple, spill phase plug short-circuit ring structure of playing simultaneously, can improve the harmonic distortion characteristic in the great dynamic range greatly, have tangible tone color to improve effect.
Claims (4)
1, a kind of loud speaker that has the novel vibrating device comprises
Awl basin (3), basin frame (7);
Place the conducting magnetic column (16) at awl basin and basin frame center;
Be connected with awl basin one end (large awl end) and be fixed on outstanding limit (2) on the basin frame;
Be connected with the awl basin other end (conelet end) and place voice coil loudspeaker voice coil (10) between magnetic gap;
First plays ripple (401), and its endoporus and voice coil loudspeaker voice coil and awl basin bond together mutually, and the outer end links to each other with the basin frame;
It is characterized in that, be provided with second at the surface location of boring basin and play ripple (402), and phase plug (14) is set on conducting magnetic column that second plays the ripple endoporus links to each other with phase plug, the outer end links to each other with awl basin surface.
2, loud speaker as claimed in claim 1 is characterized in that: the structure of described phase plug (14) and short-circuit ring structure equivalence.
3, loud speaker as claimed in claim 1 or 2 is characterized in that: described phase plug (14) top is a spill.
4, loud speaker as claimed in claim 1 or 2 is characterized in that: the diameter of the first bullet ripple (401) and the second bullet ripple (402) is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00237932 CN2439759Y (en) | 2000-08-14 | 2000-08-14 | Loudspeaker with novel vibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00237932 CN2439759Y (en) | 2000-08-14 | 2000-08-14 | Loudspeaker with novel vibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2439759Y true CN2439759Y (en) | 2001-07-18 |
Family
ID=33599089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00237932 Expired - Fee Related CN2439759Y (en) | 2000-08-14 | 2000-08-14 | Loudspeaker with novel vibration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2439759Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106303848A (en) * | 2016-08-12 | 2017-01-04 | 苏州秀转电子有限公司 | The electromagnetic screen of vehicle audio |
| CN111787469A (en) * | 2020-07-16 | 2020-10-16 | 中国人民解放军军事科学院防化研究院 | High-sound-pressure broadband wave source |
-
2000
- 2000-08-14 CN CN 00237932 patent/CN2439759Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106303848A (en) * | 2016-08-12 | 2017-01-04 | 苏州秀转电子有限公司 | The electromagnetic screen of vehicle audio |
| CN106303848B (en) * | 2016-08-12 | 2019-05-14 | 苏州秀转电子有限公司 | The electromagnetic screen of vehicle audio |
| CN111787469A (en) * | 2020-07-16 | 2020-10-16 | 中国人民解放军军事科学院防化研究院 | High-sound-pressure broadband wave source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: MEIJIA TECHNOLOGY( ZHONGSHAN ) CO., LTD. Free format text: FORMER OWNER: AILANG DIGIT TECHNOLOGY CO., LTD., GUANGDONG Effective date: 20040716 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20040716 Address after: 510613 CITIC Plaza, 233 Tianhe North Road, Guangdong, Guangzhou 5303 Patentee after: Mg International Zhongshan Co., Ltd. Address before: 510620 CITIC Plaza, 233 Tianhe North Road, Guangdong, Guangzhou 5006-5007 Patentee before: Ailang Digital Technology Co., Ltd., Guangdong Prov. |
|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Shi Yue Document name: Notification of Termination of Patent Right |
|
| 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 |