CN103096224A - Moving-magnetic type speaker - Google Patents

Moving-magnetic type speaker Download PDF

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Publication number
CN103096224A
CN103096224A CN201310015151XA CN201310015151A CN103096224A CN 103096224 A CN103096224 A CN 103096224A CN 201310015151X A CN201310015151X A CN 201310015151XA CN 201310015151 A CN201310015151 A CN 201310015151A CN 103096224 A CN103096224 A CN 103096224A
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CN
China
Prior art keywords
magnetic
electromagnet
described
moving
diaphragm
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CN201310015151XA
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Chinese (zh)
Inventor
成保院
Original Assignee
广东欧珀移动通信有限公司
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Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Priority to CN201310015151XA priority Critical patent/CN103096224A/en
Publication of CN103096224A publication Critical patent/CN103096224A/en

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Abstract

The invention discloses a moving-magnetic type speaker which comprises a magnetic vibrating diaphragm, a first electromagnet, a second electromagnet and a frame with a hollow structure. The hollow structure forms a containing cavity. The magnetic vibrating diaphragm is contained in the containing cavity and is provided with a first magnetic pole and a second magnetic pole. The first electromagnet and the second electromagnet are spaced along the direction from one side of the magnetic vibrating diaphragm to the other side of the magnetic vibrating diaphragm and are contained in the containing cavity. The magnetic vibrating diaphragm is placed between the first electromagnet and the second electromagnet. The magnetic poles, near the magnetic vibrating diaphragm, of the first electromagnet and the second electromagnet are in the same arrangement so that when the moving-magnetic type speaker is connected with a voice frequency electric current, thrust and tension are acted to the magnetic vibrating diaphragm by the first electromagnet and the second electromagnet, push-pull type acting force is generated to be acted on the magnetic vibrating diaphragm and each point of the magnetic vibrating diaphragm is even is force receiving and therefore high amplitude and sensitivity of the moving-magnetic type speaker can be reached and good operations of high frequency, middle frequency and low frequency can be achieved.

Description

Moving-magnetic type loudspeaker

Technical field

The present invention relates to a kind of loud speaker, relate in particular to a kind of moving-magnetic type loudspeaker.

Background technology

Loud speaker is a kind of energy transducer that the signal of telecommunication is changed into acoustical signal, and along with the improving constantly of people's living standard, loud speaker has become very common a kind of electrical equipment in people's life, and is widely used in every electronics and IT products in life.

As everyone knows, loud speaker is of a great variety.Can be divided into by transducing mechanism and structure: moving-coil type, condenser type, piezoelectric type, electromagnetic type, electric ion type and pneumatic type loud speaker; Can be divided into by the acoustic radiation material: cone formula, horn type and diaphragm type etc.; Can be divided into by operating frequency: bass, middle pitch and high pitch; Can be divided into by the voice coil loudspeaker voice coil impedance: Low ESR and high impedance.And the development along with loudspeaker techniques, numerous novel planar diaphragm speakers have appearred, such as electrostatic loudspeaker, to have the sound details abundant although its tonequality is compared traditional coil-moving speaker, comparatively unique advantage that parsing power is high, but because of its structure fragility very, very easily be subject to the impact of external environment, therefore need special amplifier to drive its work; But also have the not good shortcoming of low frequency frequency response, be also can't satisfy people to the pursuit of high-quality sound effect, thereby make it all be subject to serious restriction in producing, promote and using.

Therefore, being badly in need of a kind of high, medium and low frequency can obtain splendid performance and overcome above-mentioned defective with the moving-magnetic type loudspeaker that improves tonequality.

Summary of the invention

The object of the present invention is to provide a kind of high, medium and low frequency can obtain splendid performance to improve the moving-magnetic type loudspeaker of tonequality.

For achieving the above object, moving-magnetic type loudspeaker of the present invention comprises the framework of magnetic diaphragm, the first electromagnet, the second electromagnet and hollow structure.Described hollow structure forms a containing cavity, and described magnetic diaphragm is contained in described containing cavity, and a side of described magnetic diaphragm has the first magnetic pole, and the opposite side of described magnetic diaphragm has the second magnetic pole.Described the first electromagnet and the second electromagnet are the spaced apart and corresponding described containing cavity that is contained in along one of described magnetic diaphragm side to opposite side direction, described magnetic diaphragm is between described the first electromagnet and the second electromagnet, and described the first electromagnet and the magnetic pole of an end of the second contiguous described magnetic diaphragm of electromagnet are identical setting.

Preferably, described the first electromagnet and the second electromagnet along one of described magnetic diaphragm side to the opposite side direction and this magnetic diaphragm face.

Preferably, the center line of described the first electromagnet along one of described magnetic diaphragm side to the opposite side direction and the center line overlaid of the second electromagnet.

Preferably, described magnetic diaphragm is planar structure, and described the first electromagnet and the second electromagnet are symmetrical setting centered by described magnetic diaphragm.

Preferably, the inwall of described containing cavity is provided with an outstanding limit structure, and described magnetic diaphragm is connected with described outstanding limit structure.

Preferably, described the first electromagnet and the second electromagnet all comprise a magnetic core and are wound in coil on described magnetic core.

Preferably, the cross section of described magnetic core along one of described magnetic diaphragm side to the opposite side direction is I shape.

Preferably, described magnetic core is column structure, and the middle part of described column structure offers the cannelure for described coil winding.

Preferably, described magnetic core is provided with the first entrant sound structure that distributes for sound that described magnetic diaphragm produces, and described the first entrant sound even structure is distributed on described magnetic core.

Preferably, described the first entrant sound structure is one to run through the air vent hole of described magnetic core.

compared with prior art, after moving-magnetic type loudspeaker accessing to audio electric current of the present invention, the first electromagnet is identical with the magnetic pole of an end of the contiguous magnetic diaphragm of the second electromagnet, and then the magnetic diaphragm with the first magnetic pole and second magnetic pole is produced a thrust and a pulling force, form a push-pull type active force acting in conjunction in magnetic diaphragm, order about forcefully the magnetic diaphragm vibration, and produce resonance (sympathetic response) and produce the sound consistent with audio signal with ambient air, make the stressed problem of cutting apart motion that evenly and not can produce of each point of whole magnetic diaphragm, make moving-magnetic type loudspeaker of the present invention can obtain larger amplitude and sensitivity, reach the abundant high effect of parsing power that reaches of details, thereby make the high frequency exquisiteness of moving-magnetic type loudspeaker of the present invention penetrating, the shock of the full and low frequency of intermediate frequency, therefore, the height of moving-magnetic type loudspeaker of the present invention, in, low frequency can obtain splendid performance to improve tonequality, overcome the deficiency of existing loud speaker, thereby make up its shortcoming.

Description of drawings

Fig. 1 is the structural representation of moving-magnetic type loudspeaker of the present invention.

Fig. 2 be moving-magnetic type loudspeaker of the present invention in a certain work the working state schematic representation during moment.

Embodiment

In order to describe technology contents of the present invention, structural feature in detail, below in conjunction with execution mode and coordinate accompanying drawing to be described further.

See also Fig. 1, moving-magnetic type loudspeaker 100 of the present invention comprises the framework 40 of magnetic diaphragm 10, the first electromagnet 20, the second electromagnet 30 and hollow structure.Hollow structure forms a containing cavity 50, magnetic diaphragm 10 is contained in containing cavity 50, specifically, a side of magnetic diaphragm 10 has the first magnetic pole 11(N utmost point as shown in Figure 2), the opposite side of magnetic diaphragm 10 has the second magnetic pole 12(S utmost point as shown in Figure 2).The first electromagnet 20 and the second electromagnet 30 are the spaced apart and corresponding containing cavity 50 that is contained in along one of magnetic diaphragm 10 side to opposite side direction, magnetic diaphragm 10 is between the first electromagnet 20 and the second electromagnet 30, and the first electromagnet 20 and the magnetic pole of an end of the contiguous magnetic diaphragms 10 of the second electromagnet 30 are identical setting.therefore when moving-magnetic type loudspeaker 100 accessing to audio electric current of the present invention, the first electromagnet 20 is identical with the magnetic pole magnetic of an end of the second electromagnet 30 contiguous magnetic diaphragms 10, an end as the first electromagnet 20 contiguous magnetic diaphragms 10 in Fig. 2 produces the arctic, represent with N1, and an end of the second electromagnet 30 contiguous magnetic diaphragms 10 also produces the arctic, represent with N2, make 20 pairs of magnetic diaphragms of the first electromagnet 10 produce a thrust, simultaneously, the second 30 pairs of electromagnet magnetic diaphragm 10 produces a pulling force, thereby form a push-pull type active force and act on magnetic diaphragm 10, order about forcefully magnetic diaphragm 10 vibrations, and produce resonance (sympathetic response) and produce the sound consistent with audio signal with ambient air.Particularly, as follows:

Than the superior, the first electromagnet 20 and the second electromagnet 30 along one of magnetic diaphragm 10 side to the opposite side direction and this magnetic diaphragm 10 face, to improve further the action effect of recommending of the first electromagnet 20 and 30 pairs of magnetic diaphragms 10 of the second electromagnet; Particularly, the center line of the first electromagnet 20 along one of magnetic diaphragm 10 side to the opposite side direction and the center line overlaid of the second electromagnet 30, make the first electromagnet 20 and 30 pairs of magnetic diaphragms 10 of the second electromagnet to recommend action effect better; More specifically, magnetic diaphragm 10 is planar structure, the first electromagnet 20 and the second electromagnet 30 are symmetrical setting centered by magnetic diaphragm 10, make the position of the first electromagnet 20, the second electromagnet 30 and magnetic diaphragm 10 more rationally compact, magnetic diaphragm 10 forced vibrations are more steady flexibly, longer service life makes the structure of moving-magnetic type loudspeaker 100 of the present invention be simplified and produces better acoustical quality.Certainly, the shape on the surface of above-mentioned magnetic diaphragm 10 ratio is not limited to this, and the above-mentioned magnetic diaphragm that is planar structure 10 is only the preferred version in the present embodiment, in other embodiments, can also adopt according to concrete user demand other scheme; Specifically, magnetic diaphragm 10 is preferably the film with permanent magnetic or ferromagnetic property.

Simultaneously, the inwall of containing cavity 50 is provided with an outstanding limit structure 70, and magnetic diaphragm 10 is connected with outstanding limit structure 70, outstanding limit structure 70 make the vibration of magnetic diaphragm 10 and response more sensitive, specifically, hang limit structure 70 and be preferably and have flexible connecting media.Certainly, the mode that magnetic diaphragm 10 is arranged in containing cavity 50 is not limited to this, also can adopt flexibly according to the user demand of reality other form.

Moreover the first electromagnet 20 and the second electromagnet 30 all comprise a magnetic core 21,31 and be wound in coil 22,32 on magnetic core 21,31, to simplify the structure of the first electromagnet 20 and the second electromagnet 30; More excellently be, the cross section of magnetic core 21,31 along one of magnetic diaphragm 10 side to the opposite side direction is I shape, perhaps, magnetic core 21,31 is column structure, the middle part of column structure offers for coil 22,32 cannelures 23,33 that are wound around, to save the material of the first electromagnet 20 and the second electromagnet 30, thereby reduce the production and processing cost, and simplified the structure of the first electromagnet 20 and the second electromagnet 30 and the space occupancy volume in framework 40, thereby optimized further the structure of moving-magnetic type loudspeaker 100 of the present invention.

At last, magnetic core 21,31 is provided with the first entrant sound structure 60 that distributes for magnetic diaphragm 10 sound that produces, the first entrant sound structure 60 is uniformly distributed on magnetic core 21,31, so that the sound of magnetic diaphragm 10 generation of vibrations can successfully be distributed by propagation, the form that arranges of certain the first entrant sound structure 60 is not limited to this, in other embodiments, can also adopt according to the operating position of reality other the form that arranges to reach the effect of conduct acoustic waves; More excellent is, the first entrant sound structure 60 is one to run through magnetic core 21,31 air vent hole, and certainly, the specific constructive form of the first entrant sound structure 60 is not limited to this, in other embodiments, can also select different version according to actual conditions neatly.wherein, for the sound that makes moving-magnetic type loudspeaker 100 of the present invention produce can be dispersed into the external world from framework 40 internal communications more smoothly, and the good acoustical quality that can keep sound, therefore the sidewall of framework 40 is provided with for loose soniferous the second entrant sound structure (not shown) on also, more excellently be, the second entrant sound structure and the first entrant sound structure 60 are the corresponding and setting that cooperatively interacts one by one, so that can be more smoothly after by the first entrant sound mechanism propagating through the second entrant sound mechanism exactly, the sound that moving-magnetic type loudspeaker of the present invention 100 produces is dispersed into the external world, and the second entrant sound structure is one to run through the air vent hole of framework 40 sidewalls, and certainly, the specific constructive form of the second entrant sound structure is not limited to this, in other embodiments, can also select different version according to actual conditions neatly.

In conjunction with Fig. 2, operation principle to moving-magnetic type loudspeaker 100 of the present invention elaborates: after the coil 22 of the first electromagnet 20 of moving-magnetic type loudspeaker 100 of the present invention and the second electromagnet 30,32 equal accessing to audio electric currents, and tone currents direction such as I that coil 22,32 at a time passes into 1And I 2The direction of shown arrow indication, therefore the magnetic core 21 of the first electromagnet 20 and the second electromagnet 30,22 magnetic fields that produce single spin-echo, the first electromagnet 20 is identical with the magnetic pole magnetic of an end of the second electromagnet 30 contiguous magnetic diaphragms 10, the magnetic direction of the first electromagnet 20 such as N 1, S 1The direction of shown arrow indication, the magnetic direction of the second electromagnet 30 such as N 2, S 2The direction of shown arrow indication, and the direction of the arrow indication of the magnetic direction that produces of magnetic diaphragm 10 as shown in N, S are so the first 20 pairs of electromagnet magnetic diaphragm 10 produces a thrust F x, simultaneously, the second 30 pairs of electromagnet magnetic diaphragm 10 produces a tensile force f yThereby, form a push-pull type active force and act on magnetic diaphragm 10, promote forcefully magnetic diaphragm 10 and produce vibration, and produce resonance (sympathetic response) and send the sound consistent with audio signal with ambient air.Then, the sound that magnetic diaphragm 10 vibration produces is through the propagation in turn of the first entrant sound structure 60 and the second entrant sound mechanism, and the sound transmission that magnetic diaphragm 10 vibrations are produced is dispersed into the external world.

The person of meriting attention, the first electromagnet 20 in the present embodiment and the quantity of the second electromagnet 30 all are preferably 1 group; But in other embodiments, the quantity of the first electromagnet 20 and the second electromagnet 30 is not limited to this, and it is to select different quantity according to different user demands.

compared with prior art, due to moving-magnetic type loudspeaker 100 of the present invention after the accessing to audio electric current, the first electromagnet 20 is identical with the magnetic pole magnetic of an end of the second electromagnet 30 contiguous magnetic diaphragms 10, magnetic diaphragm 10 with the first magnetic pole 11 and second magnetic pole 12 is produced a thrust and a pulling force, form a push-pull type active force acting in conjunction in magnetic diaphragm 10, order about forcefully magnetic diaphragm 10 vibrations and produce resonance (sympathetic response) and produce the sound consistent with audio signal with ambient air, make the stressed problem of cutting apart motion that evenly and not can produce of each point of whole magnetic diaphragm 10, make moving-magnetic type loudspeaker 100 of the present invention can obtain higher amplitude and sensitivity, reach the abundant high effect of parsing power that reaches of details, thereby make the high frequency exquisiteness of moving-magnetic type loudspeaker 100 of the present invention penetrating, the shock of the full and low frequency of intermediate frequency, therefore, the height of moving-magnetic type loudspeaker 100 of the present invention, in, low frequency can obtain splendid performance to improve tonequality, overcome the deficiency of existing loud speaker, thereby make up its shortcoming.

Above disclosed is only preferred embodiments of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to claim of the present invention still belongs to the scope that the present invention is contained.

Claims (10)

1. moving-magnetic type loudspeaker, it is characterized in that, comprise magnetic diaphragm, the first electromagnet, the framework of the second electromagnet and hollow structure, described hollow structure forms a containing cavity, described magnetic diaphragm is contained in described containing cavity, and a side of described magnetic diaphragm has the first magnetic pole, the opposite side of described magnetic diaphragm has the second magnetic pole, described the first electromagnet and the second electromagnet are the spaced apart and corresponding described containing cavity that is contained in along one of described magnetic diaphragm side to opposite side direction, described magnetic diaphragm is between described the first electromagnet and the second electromagnet, and described the first electromagnet and the magnetic pole of an end of the second contiguous described magnetic diaphragm of electromagnet are identical setting.
2. moving-magnetic type loudspeaker as claimed in claim 1, is characterized in that, described the first electromagnet and the second electromagnet along one of described magnetic diaphragm side to the opposite side direction and this magnetic diaphragm face.
3. moving-magnetic type loudspeaker as claimed in claim 1, is characterized in that, the center line of described the first electromagnet along one of described magnetic diaphragm side to the opposite side direction and the center line overlaid of the second electromagnet.
4. moving-magnetic type loudspeaker as claimed in claim 1, is characterized in that, described magnetic diaphragm is planar structure, and described the first electromagnet and the second electromagnet are symmetrical setting centered by described magnetic diaphragm.
5. moving-magnetic type loudspeaker as described in claim 1 to 4 any one, is characterized in that, the inwall of described containing cavity is provided with an outstanding limit structure, and described magnetic diaphragm is connected with described outstanding limit structure.
6. moving-magnetic type loudspeaker as described in claim 1 to 4 any one, is characterized in that, described the first electromagnet and the second electromagnet all comprise a magnetic core and be wound in coil on described magnetic core.
7. moving-magnetic type loudspeaker as claimed in claim 6, is characterized in that, the cross section of described magnetic core along one of described magnetic diaphragm side to the opposite side direction is I shape.
8. moving-magnetic type loudspeaker as claimed in claim 6, is characterized in that, described magnetic core is column structure, and the middle part of described column structure offers the cannelure for described coil winding.
9. moving-magnetic type loudspeaker as claimed in claim 6, is characterized in that, described magnetic core is provided with the first entrant sound structure that distributes for sound that described magnetic diaphragm produces, and described the first entrant sound even structure is distributed on described magnetic core.
10. moving-magnetic type loudspeaker as claimed in claim 9, is characterized in that, described the first entrant sound structure is one to run through the air vent hole of described magnetic core.
CN201310015151XA 2013-01-15 2013-01-15 Moving-magnetic type speaker CN103096224A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103929700A (en) * 2014-04-15 2014-07-16 施平曦 Horn driven by balanced magnets
CN104618838A (en) * 2015-02-09 2015-05-13 张玮 Moving-magnetic and planar-vortex multi-layer connected type ultrathin receiver (speaker)
CN104869496A (en) * 2015-03-23 2015-08-26 马根昌 Throat tube type sound box
CN106454662A (en) * 2016-11-18 2017-02-22 广东欧珀移动通信有限公司 Loudspeaker and earphone
CN106804020A (en) * 2017-01-20 2017-06-06 瑞声科技(南京)有限公司 Vibrative sound producing device

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CN2506046Y (en) * 2001-08-27 2002-08-14 姚洪波 Driver of belt type high frequency loudspeaker
EP1434463A2 (en) * 2002-12-27 2004-06-30 Matsushita Electric Industrial Co., Ltd. Electroacoustic transducer and electronic apparatus with such a transducer
US20050281419A1 (en) * 2004-06-18 2005-12-22 Shinichi Miyazaki Ultrasonic transducer, ultrasonic speaker, and method of controlling the driving of ultrasonic transducer
CN200947671Y (en) * 2006-01-20 2007-09-12 丁轶 Belt speaker
CN101340738A (en) * 2007-07-05 2009-01-07 中国科学院声学研究所 Super large power electromagnetic suction push-pull driving sound source
CN201213315Y (en) * 2008-03-10 2009-03-25 中山市惠威电器有限公司 Belt type high frequency loudspeaker
CN201435823Y (en) * 2009-04-21 2010-03-31 美律实业股份有限公司 electroacoustic transducer

Patent Citations (8)

* Cited by examiner, † Cited by third party
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
EP1434463A2 (en) * 2002-12-27 2004-06-30 Matsushita Electric Industrial Co., Ltd. Electroacoustic transducer and electronic apparatus with such a transducer
US20050281419A1 (en) * 2004-06-18 2005-12-22 Shinichi Miyazaki Ultrasonic transducer, ultrasonic speaker, and method of controlling the driving of ultrasonic transducer
JP2006005734A (en) * 2004-06-18 2006-01-05 Seiko Epson Corp Ultrasonic transducer, ultrasonic speaker, and method for controlling drive of ultrasonic transducer
CN200947671Y (en) * 2006-01-20 2007-09-12 丁轶 Belt speaker
CN101340738A (en) * 2007-07-05 2009-01-07 中国科学院声学研究所 Super large power electromagnetic suction push-pull driving sound source
CN201213315Y (en) * 2008-03-10 2009-03-25 中山市惠威电器有限公司 Belt type high frequency loudspeaker
CN201435823Y (en) * 2009-04-21 2010-03-31 美律实业股份有限公司 electroacoustic transducer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103929700A (en) * 2014-04-15 2014-07-16 施平曦 Horn driven by balanced magnets
CN104618838A (en) * 2015-02-09 2015-05-13 张玮 Moving-magnetic and planar-vortex multi-layer connected type ultrathin receiver (speaker)
CN104869496A (en) * 2015-03-23 2015-08-26 马根昌 Throat tube type sound box
CN104869496B (en) * 2015-03-23 2018-03-27 佛山莱特镁节能环保科技有限公司 Wikipedia type sound equipment
CN106454662A (en) * 2016-11-18 2017-02-22 广东欧珀移动通信有限公司 Loudspeaker and earphone
CN106454662B (en) * 2016-11-18 2019-04-23 Oppo广东移动通信有限公司 Loudspeaker and earphone
CN106804020A (en) * 2017-01-20 2017-06-06 瑞声科技(南京)有限公司 Vibrative sound producing device

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Application publication date: 20130508