CN201594911U - Loudspeaker magnetic short circuit ring and loudspeaker - Google Patents
Loudspeaker magnetic short circuit ring and loudspeaker Download PDFInfo
- Publication number
- CN201594911U CN201594911U CN2009202464005U CN200920246400U CN201594911U CN 201594911 U CN201594911 U CN 201594911U CN 2009202464005 U CN2009202464005 U CN 2009202464005U CN 200920246400 U CN200920246400 U CN 200920246400U CN 201594911 U CN201594911 U CN 201594911U
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- short
- conducting sleeve
- voice coil
- circuited conducting
- loudspeaker
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Abstract
The utility model relates to a loudspeaker magnetic short circuit ring and a loudspeaker comprising the short circuit ring. An annular groove is processed on the outer circumferential surface of the pole column of a T iron, and a metal wire of proper thickness is closely wound in the groove to form a short circuit ring. Thus, the magnetic short circuit ring of the loudspeaker does not occupy the magnetic circuit gap. A voice coil can freely move in the magnetic circuit gap without touching the inner and outer walls of the magnetic circuit. Meanwhile, the magnetic field intensity in the magnetic circuit gap is increased, and the loudspeaker sensitivity can not be reduced due to the short circuit ring.
Description
Technical field
The loud speaker that the utility model relates to a kind of magnetic circuit of loudspeaker short-circuited conducting sleeve and comprises this short-circuited conducting sleeve.
Background technology
At present, in order to reduce distortion that magnetic circuit of loudspeaker causes and the high frequency radiation that improves loud speaker, generally need in magnetic circuit of loudspeaker, dispose a magnetic circuit of loudspeaker short-circuited conducting sleeve.
At first, when electric current when having the voice coil loudspeaker voice coil of induction reactance, can on voice coil loudspeaker voice coil, produce the reverse induction electromotive force, participate in electricity, power, conversion, thereby make the sound wave distortion of reduction.At this, short-circuited conducting sleeve plays the effect of voice coil loudspeaker voice coil secondary coil, it when voice coil loudspeaker voice coil moves, produce one with the opposite magnetic field of voice coil loudspeaker voice coil current field direction, make the equivalent inductance of voice coil loudspeaker voice coil approach zero, reduced inverse electromotive force, thereby reduced distortion.
Secondly, the electrical impedance of loud speaker increases and dull the rising with frequency ground.Under the situation of loud speaker level pressure input, electrical power that will loud speaker consumed reduces, and its result will cause the reduction of loud speaker radiation acoustical power, thereby influence the playback of high frequency.Because short-circuited conducting sleeve reduces the equivalent inductance of voice coil loudspeaker voice coil greatly, thus the electrical impedance of loud speaker when high frequency no longer the increase with frequency obviously rise, the frequency can be improved the high frequency radiation of loud speaker.
Fig. 1 is the profile of existing loud speaker comprising short-circuited conducting sleeve.
As shown in Figure 1, loud speaker comprises voice coil loudspeaker voice coil 1, train wheel bridge 2, magnet 3, T iron 4 and short-circuited conducting sleeve 5.Magnetic circuit of loudspeaker is made up of train wheel bridge 2, T iron 4 and toroidal coils.A toroid air gap is formed between the pole piece post of train wheel bridge 2, magnet 3 and T iron 4, and voice coil loudspeaker voice coil is suspended in this toroid air gap and with vibrating diaphragm and is connected.Voice coil loudspeaker voice coil by the alternation tone currents moves owing in the magnetic field that acts on the toroid air gap in magnetic field, and the vibrating diaphragm that links to each other with voice coil loudspeaker voice coil is vibration thereupon also, by air dielectric sound wave is sent out again.Short-circuited conducting sleeve is configured to be enclosed within on the T iron (conducting magnetic column or be called newel or be called the pole piece post) of the magnetic circuit of loud speaker, and short-circuited conducting sleeve can be made by metallic copper.
Further, Fig. 2 is the profile of existing magnetic circuit structure for loudspeaker comprising short-circuited conducting sleeve.
As shown in Figure 2, magnetic circuit of loudspeaker is made up of train wheel bridge 2, T iron 4 and toroidal coils.Short-circuited conducting sleeve can be enclosed within on the pole piece post of T iron for a thin copper sheathing, and the external diameter of the short-circuited conducting sleeve on the pole piece post of the mesopore of train wheel bridge and T iron forms the toroid slit, and voice coil loudspeaker voice coil is suspended in this toroid slit and with vibrating diaphragm and links to each other.Coil by AC signal moves in the magnetic field in magnetic circuit slit, makes the vibrating diaphragm vibration that links to each other with voice coil loudspeaker voice coil, by air dielectric, sound wave is sent out again.
In order to guarantee the sensitivity of loud speaker, the magnetic field in magnetic circuit slit must have certain intensity.Under all fixing situation of the quality of magnet and volume, the shape of magnetic circuit, permeability magnetic material, the magnetic field intensity in the magnetic circuit slit depends on the width degree in magnetic slit.In addition, should be able to free movement in the magnetic circuit slit in order to guarantee voice coil loudspeaker voice coil, do not touch the magnetic circuit inside and outside wall, this just requires the magnetic circuit slit that enough width will be arranged.The magnetic field intensity in magnetic circuit slit and the width in slit are inversely proportional to, and the slit is wide more, and magnetic field intensity is weak more, and the sensitivity of loud speaker is just low more.
Having under the situation of short-circuited conducting sleeve, the copper sheathing thickness of short-circuited conducting sleeve has taken the part in magnetic slit, and actual gap has broadened, and magnetic field intensity is low, thereby has reduced the sensitivity of loud speaker.
The utility model content
The loud speaker that the utility model provides a kind of magnetic circuit of loudspeaker short-circuited conducting sleeve that can overcome the above problems and comprised this short-circuited conducting sleeve
In first aspect, the utility model provides a kind of magnetic circuit of loudspeaker short-circuited conducting sleeve, described magnetic circuit of loudspeaker comprises train wheel bridge, magnet, T iron and short-circuited conducting sleeve, it is characterized in that having ring-like groove together on the pole piece post outer circumference surface of described T iron, described short-circuited conducting sleeve is the tight metal wire of coiling in described ring-shaped groove.
In second aspect, the utility model provides a kind of loud speaker, comprise vibrating diaphragm, voice coil loudspeaker voice coil, train wheel bridge, magnet, T iron and short-circuited conducting sleeve, it is characterized in that having ring-like groove together on the pole piece post outer circumference surface of described T iron, described short-circuited conducting sleeve is the metal wire of tight coiling in described ring-shaped groove, the pole piece post external diameter of the mesopore of train wheel bridge, magnet, T iron and described short-circuited conducting sleeve form the toroid slit, described voice coil loudspeaker voice coil is suspended in the described toroid slit and with vibrating diaphragm and links to each other, the vibration when energising of described voice coil loudspeaker voice coil is to drive the vibrating diaphragm sounding.
The utility model is by processing ring-like groove together on the pole piece post outer circumference surface of T iron, closely coiling thickness suitable metal line forms short-circuited conducting sleeve in groove.Like this, the magnetic circuit short-circuited conducting sleeve of loud speaker does not take the magnetic circuit slit, both guaranteed voice coil loudspeaker voice coil can be in the magnetic circuit slit free movement and do not touch the magnetic circuit inside and outside wall, also increased the magnetic field intensity in the magnetic circuit slit simultaneously, guaranteed that the sensitivity of loud speaker can thereby not reduce because of the former of short-circuited conducting sleeve.
Description of drawings
Below with reference to accompanying drawings specific embodiments of the present utility model is described in detail, in the accompanying drawings:
Fig. 1 is the profile of existing loud speaker comprising short-circuited conducting sleeve;
Fig. 2 is the profile of existing magnetic circuit structure for loudspeaker comprising short-circuited conducting sleeve;
Fig. 3 is the profile according to the magnetic circuit of loudspeaker comprising short-circuited conducting sleeve of the present utility model.
Embodiment
Fig. 3 is the profile according to the magnetic circuit of loudspeaker comprising short-circuited conducting sleeve of the present utility model.
As shown in Figure 3, magnetic circuit of loudspeaker by train wheel bridge 2, T iron 4, toroidal coils 3 and the short-circuited conducting sleeve 6 after improving form.On the pole piece post outer circumference surface of T iron, process ring-like groove together, tight coiling thickness suitable metal line in groove, this metal wire can be a bare copper wire.Preferably, after coiling is finished, the end of a thread and winding are welded, and copper cash winding external diameter does not exceed the external diameter of pole piece post.Like this, the short-circuited conducting sleeve after the improvement is the as above copper cash of institute's coiling.Short-circuited conducting sleeve 6 after the pole piece post external diameter of the mesopore of train wheel bridge 2, magnet, T iron and the improvement forms the toroid slits, and voice coil loudspeaker voice coil 1 is suspended in this toroid slit and with vibrating diaphragm and links to each other.Coil by AC signal moves in the magnetic field in magnetic circuit slit, makes the vibrating diaphragm vibration that links to each other with voice coil loudspeaker voice coil 1, by air dielectric, sound wave is sent out again.
Before improving, compare, magnetic circuit of loudspeaker short-circuited conducting sleeve 6 after the improvement no longer takies the magnetic circuit slit, both guaranteed voice coil loudspeaker voice coil 1 can be in the magnetic circuit slit free movement and do not touch the magnetic circuit inside and outside wall, also increased simultaneously the magnetic field intensity in the magnetic circuit slit, guaranteed that the sensitivity of loud speaker can thereby not reduce because of the former of short-circuited conducting sleeve.
Obviously, under the prerequisite that does not depart from true spirit of the present utility model and scope, the utility model described here can have many variations.Therefore, the change that all it will be apparent to those skilled in the art that all should be included within the scope that these claims contain.The utility model scope required for protection is only limited by described claims.
Claims (8)
1. magnetic circuit of loudspeaker short-circuited conducting sleeve, described magnetic circuit of loudspeaker comprises train wheel bridge, magnet, T iron and short-circuited conducting sleeve, it is characterized in that having ring-like groove together on the pole piece post outer circumference surface of described T iron, described short-circuited conducting sleeve is the tight metal wire of coiling in described ring-shaped groove.
2. short-circuited conducting sleeve according to claim 1 is characterized in that described metal wire is a bare copper wire.
3. short-circuited conducting sleeve according to claim 1 is characterized in that the external diameter of described metal wire does not exceed the external diameter of the pole piece post of described T iron.
4. short-circuited conducting sleeve according to claim 1 is characterized in that described coiling is the end of a thread and the winding welding with metal wire.
5. loud speaker, comprise vibrating diaphragm, voice coil loudspeaker voice coil, train wheel bridge, magnet, T iron and short-circuited conducting sleeve, it is characterized in that having ring-like groove together on the pole piece post outer circumference surface of described T iron, described short-circuited conducting sleeve is the metal wire of tight coiling in described ring-shaped groove, the pole piece post external diameter of the mesopore of train wheel bridge, magnet, T iron and described short-circuited conducting sleeve form the toroid slit, described voice coil loudspeaker voice coil is suspended in the described toroid slit and with vibrating diaphragm and links to each other, the vibration when energising of described voice coil loudspeaker voice coil is to drive the vibrating diaphragm sounding.
6. loud speaker according to claim 5 is characterized in that described metal wire is a bare copper wire.
7. loud speaker according to claim 5 is characterized in that the external diameter of described metal wire does not exceed the external diameter of the pole piece post of described T iron.
8. loud speaker according to claim 5 is characterized in that described coiling is the end of a thread and the winding welding with metal wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202464005U CN201594911U (en) | 2009-10-26 | 2009-10-26 | Loudspeaker magnetic short circuit ring and loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202464005U CN201594911U (en) | 2009-10-26 | 2009-10-26 | Loudspeaker magnetic short circuit ring and loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201594911U true CN201594911U (en) | 2010-09-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202464005U Expired - Fee Related CN201594911U (en) | 2009-10-26 | 2009-10-26 | Loudspeaker magnetic short circuit ring and loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201594911U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104661161A (en) * | 2013-11-21 | 2015-05-27 | 哈曼国际工业有限公司 | Inverted dual coil transducer |
| CN103200489B (en) * | 2013-03-21 | 2016-11-02 | 张百良 | A kind of film short-circuited conducting sleeve of electromagnetic driver |
| CN107509147A (en) * | 2017-09-21 | 2017-12-22 | 惠州超声音响有限公司 | A kind of magnetic circuit of loudspeaker with U-shaped short-circuited conducting sleeve |
| CN107529115A (en) * | 2017-09-30 | 2017-12-29 | 陈新得 | A kind of tesla's magnetic group loudspeaker |
| CN108668208A (en) * | 2018-05-16 | 2018-10-16 | 歌尔股份有限公司 | A kind of loud speaker |
-
2009
- 2009-10-26 CN CN2009202464005U patent/CN201594911U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103200489B (en) * | 2013-03-21 | 2016-11-02 | 张百良 | A kind of film short-circuited conducting sleeve of electromagnetic driver |
| CN104661161A (en) * | 2013-11-21 | 2015-05-27 | 哈曼国际工业有限公司 | Inverted dual coil transducer |
| CN104661161B (en) * | 2013-11-21 | 2020-01-21 | 哈曼国际工业有限公司 | Inverted double-coil transducer |
| CN107509147A (en) * | 2017-09-21 | 2017-12-22 | 惠州超声音响有限公司 | A kind of magnetic circuit of loudspeaker with U-shaped short-circuited conducting sleeve |
| GB2566827A (en) * | 2017-09-21 | 2019-03-27 | Premium Loudspeakers Hui Zhou Co Ltd | Loudspeaker magnetic circuit system having u-shaped short-circuit ring |
| GB2566827B (en) * | 2017-09-21 | 2019-12-18 | Tymphany Acoustic Tech Huizhou Co Ltd | Loudspeaker magnetic circuit system having u-shaped short-circuit ring |
| CN107509147B (en) * | 2017-09-21 | 2023-12-12 | 惠州迪芬尼声学科技股份有限公司 | Loudspeaker magnetic circuit system with U-shaped short circuit ring |
| CN107529115A (en) * | 2017-09-30 | 2017-12-29 | 陈新得 | A kind of tesla's magnetic group loudspeaker |
| CN108668208A (en) * | 2018-05-16 | 2018-10-16 | 歌尔股份有限公司 | A kind of loud speaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20121026 |