Utility model content
In view of the foregoing, it is necessary to which a kind of compact-sized loudspeaker is provided.
The utility model provides a kind of loudspeaker, including voice unit, bass unit, passive vibrating diaphragm and frame, describedFrame includes the first basin body portion and the fixed passive vibrating diaphragm for accommodating the voice unit and the bass unitSecond basin body portion, the voice unit are set to the bottom end in first basin body portion, and the bass unit is set to described firstThe top in basin body portion, second basin body portion have upper frame and connect the top of the upper frame and first basin body portionMultiple side arms, the multiple side arm be intervally arranged with the upper frame on the top in first basin body portion, the second basin body portion withAnd multiple through-holes are formed between multiple side arms being intervally arranged；
A part of sound wave that the voice unit and the bass unit issue directly is transferred out from the through-hole, another portionDivide sound wave via low-frequency sound wave is obtained after the passive vibrating diaphragm reflection, the low-frequency sound wave is transferred out from the through-hole again.
Further, the voice unit include tweeters diaphragms, the high pitch voice coil being connect with the tweeters diaphragms and withFirst fixed ring of the tweeters diaphragms periphery connection；The bass unit includes tweeters diaphragmse, connect with the tweeters diaphragmseBass coil and be connected to the second fixed ring of the tweeters diaphragmse outer periphery.
Further, the top of the upper frame in second basin body portion is provided with third fixed ring, the third fixed ringIt is connected to the passive vibrating diaphragm outer periphery, the passive vibrating diaphragm includes diaphragm and counterweight；
The middle part of the diaphragm is arranged in the counterweight, and the counterweight is located at the diaphragm close to the bass unitSide；
The periphery of the diaphragm is equipped with ring.
Further, the tweeters diaphragmse is hollow ring diaphragm, and the inner periphery connection the 4th of the tweeters diaphragmse is solidDetermine ring；
The loudspeaker further includes magnetic circuit component, and the magnetic circuit component includes T iron and magnet, in which:
The T iron includes cylinder and partition, and the cylinder is in hollow pipeline shape to form voice guide hole, the diaphragm rings windingIt is placed on the cylinder；
The cylinder is contacted close to the top of the tweeters diaphragmse with the 4th fixed ring, and the magnet is arranged describedFor partition between the lower surface and first basin body portion of the tweeters diaphragms, the magnet is sheathed on the outer of the cylinderSide, so that the magnet is folded between the lower surface of the partition and first basin body portion.
Further, the loudspeaker further includes the first damping screen and protection cap, and the protection cap is arranged described firstThe middle part of the protection cap is arranged in the bottom end in basin body portion, first damping screen, to adjust the air pressure in the voice unit；
The loudspeaker further includes the second damping screen, and first basin body of the frame is arranged in second damping screenThe outer edge in portion, to adjust the air pressure in the bass list.
Further, the loudspeaker further includes circuit board, and the bottom end in first basin body portion is arranged in the circuit board,The circuit board is used to provide power supply signal for the high pitch voice coil and the bass coil.
Further, the loudspeaker further includes washer, and the close height of the cylinder of the T iron is arranged in the washerThe bottom end of sound unit.
Further, the loudspeaker further includes first lead slot and first lead, and the first lead slot is arranged in instituteThe side of the bottom end in the first basin body portion is stated, one end of the first lead draws from the first lead slot and shakes along the high pitchIt extends to the high pitch voice coil on the inside of film to be electrically connected with the high pitch voice coil, the other end of the first lead passes through described firstWire lead slot is connect with the circuit board.
Further, the loudspeaker further includes the second wire lead slot and the second lead, and second wire lead slot is arranged in instituteThe side on the top in the first basin body portion is stated, wherein one end of second lead is connected with the bass coil, described second drawsThe other end of line is stretched along the outer rim edge in first basin body portion by the second wire lead slot and is connect with the circuit board.
The utility model also provides a kind of earphone, including loudspeaker as described above, and the earphone further includes described in installationThe earphone case of loudspeaker and the cable being electrically connected with the loudspeaker.
Compared with prior art, loudspeaker provided by the utility model, including voice unit, bass unit, passive vibrating diaphragmAnd frame, the frame include the first basin body portion and the second basin body portion, first basin body portion accommodates voice unit and lowSound unit, second basin body portion have upper frame and are connected between the upper frame and the top in first basin body portionMultiple side arms, the multiple side arm be intervally arranged with the upper frame on the top in first basin body portion, the second basin body portion withAnd multiple through-holes are defined between multiple side arms being intervally arranged；A part of sound wave that the voice unit and bass unit issue is straightIt connects from the through-hole and transfers out, another part sound wave absorbs via the passive vibrating diaphragm and obtains low-frequency sound wave after reflecting, describedLow-frequency sound wave is transferred out from the through-hole again.Since high and low sound unit, passive vibrating diaphragm are set in frame, substantially reduce and raiseThe volume of sound device, and process is simplified, therefore reduce costs.
Further, two phonation units of loudspeaker provided by the utility model share a magnetic circuit component, the magneticAccommodating chamber in frame is separated into two not connected sound chambers by road component, and the audio difference that each phonation unit issues is neverSame sound chamber is spread out of, and the air-flow between two sound chambers does not circulate mutually, avoids generating audio mixing, so that the sound timbre that loudspeaker issuesCompletely, while it is also more compact using the structure of two phonation units of this structure.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with specific embodiment.Obviously, instituteThe embodiment of description is only a part of embodiment of the utility model, rather than whole embodiments.It is practical new based on thisEmbodiment in type, every other reality obtained by those of ordinary skill in the art without making creative effortsMode is applied, is fallen within the protection scope of the utility model.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility modelThe normally understood meaning of the technical staff in domain is identical.The title of technological means used in the description of the utility model is onlyIt is the purpose in order to describe specific embodiment, it is not intended that in limitation the utility model.
It please refers to shown in Fig. 1-4, Fig. 1 is the general perspective view for the loudspeaker 100 that an embodiment of the utility model providesFigure, Fig. 2 are this implementation schematic perspective view, and Fig. 3 is loudspeaker shown in Fig. 1 along the cross-sectional view in the direction II-II, and Fig. 4 is Fig. 2 instituteShow the explosive view of loudspeaker.In the present embodiment, loudspeaker 100 includes voice unit, bass unit, passive vibrating diaphragm and frame 4,Frame 4 is whole cup-shaped, and with top 50 and bottom end 60, and the frame 4 accommodates voice unit, bass unit and magnetic circuit component3.The bottom end of frame 4 is equipped with protection cap 8.
Specifically, in the present embodiment, frame 4 includes the first basin body portion for accommodating voice unit and bass unit41 and fixed passive vibrating diaphragm the second basin body portion.
As shown in figure 3, voice unit is set to the bottom end in the first basin body portion 41, bass unit is set to the first basin body portion 41Top, the second basin body portion, which has, upper frame 42 and to be connected to multiple between frame 42 and the top in the first basin body portion 41Side arm 43, multiple side arms 43 are intervally arranged in the upper frame 42 on the top in the first basin body portion 41, the second basin body portion and multipleMultiple through-holes 40 are formed between the side arm 43 being intervally arranged.
In order to easy to process and reduce cost, the first basin body portion 41, upper frame 42 and side arm 43 are integrally formed, upper frame42 top is equipped with passive vibrating diaphragm.Passive vibrating diaphragm includes diaphragm 17, counterweight 15 and the ring 16 in the setting of diaphragm periphery.Due to heightSound unit, bass unit are installed in integrally formed frame with passive vibrating diaphragm, therefore substantially reduce the volume of loudspeaker.
A part of sound wave that voice unit and bass unit issue directly is transferred out from through-hole 40；The conduction of another part sound waveResonance occurs to absorb high frequency sound wave and issue low-frequency sound wave to passive vibrating diaphragm, and with passive vibrating diaphragm, low-frequency sound wave is via passiveIt is transferred out again from through-hole 40 after vibrating diaphragm reflection.Due to producing low-frequency sound wave, all-bottom sound after acoustic wave segment and the resonance of passive vibrating diaphragmWave transfers out via through-hole 40 and eventually enters into human ear, to greatly reinforce bass, is finally reached the effect for improving sound quality.
In the present embodiment, it is provided with third fixed ring 18 in upper frame 42, which is connected to passive vibrationFilm outer periphery.Third fixed ring 18 can be the ring of copper ring or other materials, can to improve the stability of passive diaphragm oscillationsWhen to avoid big volume, there is the phenomenon that vibrating diaphragm is disengaged from edge because passive vibrating diaphragm motion amplitude is excessive.
In the present embodiment, passive vibrating diaphragm includes diaphragm 17, the middle position of diaphragm 17 and (including low close to bass unitSound vibrating diaphragm 21, bass coil 22, the second fixed ring 23 and the 4th fixed ring 24) side be equipped with counterweight 15,17 periphery of diaphragm is setThere is ring 16.It in order to guarantee better air-tightness, while can be reduced production process again, save material, drop low cost production thereofSimplification, diaphragm 17 and ring 16 can integrated moldings.It sees on the whole, passive vibrating diaphragm peripheral (ring) is arcuate structure,Inside is plane or bathtub construction.In general, ring 16 can be round, ellipse, runway circle or other shapes.Counterweight 15 can be goldBelong to material, it in other embodiments, can the middle position in diaphragm 17 and one layer of colloidal material of side painting close to bass unitTo achieve the effect that counterweight.Diaphragm 17 can be made of high damping materials such as paper, cloth, foam, rubber or thermoplastics.Diaphragm 17 and counterweight15 bondings together, can absorb the high pitch formed since counterweight is vibrated, to reach better bass effect.In other embodimentsIn, passive vibrating diaphragm may also be arranged to other shapes.
In order to more compactly by voice unit and bass unit configuration in integrally formed frame 4, it is preferred that high pitch listMember and the structure of bass unit are specific as follows:
Voice unit is set to the bottom end in the first basin body portion 41 comprising tweeters diaphragms 11, high pitch voice coil 12 and first are solidDetermine ring 13.Wherein, high pitch voice coil 12 is in hollow and annular, and one end is fixed on side of the tweeters diaphragms 11 far from passive vibrating diaphragm, separatelyOne end is hanging setting.After high pitch voice coil 12 is powered, the movement of the reciprocating cutting magnetic line of force is done under the action of electromagnetic field, thus bandDynamic tweeters diaphragms 11 vibrate up and down, and generate sound wave.First fixed ring 13 is fixedly connected with the outer periphery of tweeters diaphragms 11, can beThe ring of copper ring or other materials, to improve the stability of the vibration of tweeters diaphragms 11, when avoiding big volume, because vibrating diaphragm moves widthIt spends big and the phenomenon that voice coil dislocation or vibrating diaphragm are disengaged from edge occurs.Bottom end and the guarantor of frame 4 is arranged in first fixed ring 13Between protecting cover 8.
Bass unit is set to the top in first basin body portion 41 comprising tweeters diaphragmse 21, bass coil 22, secondFixed ring 23 and the 4th fixed ring 24.Tweeters diaphragmse 21 is hollow ring diaphragm structure, inner periphery with minor diameter and bigThe outer periphery of diameter, the second fixed ring 23 are fixed on outer periphery, and the 4th fixed ring 24 is fixed on inner periphery, the second fixed ring 23 andThe coaxial arrangement of 4th fixed ring 24, and diameter is different, and second fixed ring 23 and the 4th fixed ring 24 can be copperThe ring of ring or other materials, to improve the stability of the vibration of tweeters diaphragmse 21, when can be to avoid big volume, because vibrating diaphragm movesAmplitude is excessive and the phenomenon that voice coil dislocation or vibrating diaphragm are disengaged from edge occurs.One end of bass coil 22 is connected to tweeters diaphragmse 21Side far from protection cap 8, the other end are hanging setting.Second fixed ring 23 is arranged on the outer periphery on 4 top of frame.
Loudspeaker further includes magnetic circuit component 3, and magnetic circuit component 3 generally includes magnet 31, T iron 32.In some embodiments, byIt can additional washer 33 in the structure difference of T iron 32.In this implementation, washer 33 is fixed in T iron 32.
Whole T iron 32 is in T-shaped comprising hollow cylinder 321 and annular partition 322, cylinder 321 and partition 322 can oneBody formed or independent molding, partition 322 are annular in shape and generally around in the middle position of the cylinder 321；As shown in figure 3,The hollow part of cylinder 321 is the voice guide hole 30 for leading note, cylinder 321 close to bass unit one end and bass unitFour fixed rings 24 are in contact, and one end of the close voice unit of cylinder 321 is equipped with washer 33, and washer 33 is used for magnetic conduction, usuallyIt is the lower mild steel of phosphorus content to reduce magnetic resistance, it usually constitutes magnetic circuit, in other embodiments, the China with T iron, magnetDepartment 33 can be integrally formed with T iron 32；In general, washer 33 and T iron 32 use identical material when the material of T iron 32 is harderAnd it is integrally formed；When the material is soft for T iron 32, washer 33 is then fastenedly connected using harder material and with the T iron 32, withT iron 32 is carried out reinforcing that T iron 32 is avoided to deform.
Ringshaped magnet 31, set are provided between the lower surface and frame 4 of the close voice unit of the partition 322 of T iron 32Set on the outside of cylinder 321, so that magnet 31 is folded between the lower surface of partition 322 and frame 4, magnet 31 is solid for providingFixed magnetic field.In addition, the lower surface of the bottom end of frame 4 is connect with circuit board 5, circuit board 5 is equipped with input terminal and (does not show in figureExternal power supply is connected out), to provide source of sound and the current signal input of loudspeaker, and current signal is passed into high pitch voice coil 12With bass coil 22.
The close middle position of protection cap 8 is equipped with the first damping screen 6, to adjust the air pressure in voice unit.The basinThe side of 4 bottom end of frame is equipped with first lead slot (not shown), and wherein first lead (not shown) is from first lead slotIt draws, and extends to high pitch voice coil 12 on the inside of tweeters diaphragms 11 and be connected electrically, to provide electric current letter to high pitch voice coil 12Number, the other end of first lead is connect by first lead slot with circuit board 5, and what this technology belonged to earphone field notes technology,It is realized by first lead and is powered to high pitch voice coil 12, high pitch voice coil 12 is driven to vibrate.In other embodiments, described first drawsLine can be also connected to otherwise on high pitch voice coil 12.
The outer edge side on the close top in first basin body portion 41 is equipped with the second damping screen 7, to adjust bass unitInterior air pressure.The side on 4 top of frame is equipped with the second wire lead slot (not shown), wherein the second lead (does not show in figureOne end and bass coil 22 out) connects, and the second lead other end is by the second wire lead slot along the first basin body portion 41Outer rim is powered to the bass coil 22 with realizing along stretching and connecting with circuit board 5, to drive bass coil 22 to vibrate.At itIn its embodiment, second lead can be also connected to otherwise in bass coil 22.
T iron 32 in magnetic circuit component 3 is in hollow columnar, and it cooperates cyclic annular tweeters diaphragmse 21, tweeters diaphragms 11 and frameEach component parts such as 4 form closed high pitch sound chamber 10 and bass sound chamber 20.The high pitch sound chamber 10, bass sound chamber 20It forms specific as follows:
Tweeters diaphragms 11, the first fixed ring 13, magnetic circuit component 3 enclose a closed high pitch sound chamber 10, high pitch jointly12 one end of voice coil connects vibrating diaphragm 11, and the other end protrudes into high pitch sound chamber 10, and magnet 31 is that the high pitch voice coil 12 provides fixed magnetic, high pitch voice coil 12, which is passed through tone currents, can generate changing magnetic field, the fixed magnetic field phase that changing magnetic field is provided with magnet 31Interaction, same polarity magnetic field is mutually exclusive, and opposed magnetic field attracts each other.Due to high pitch voice coil 12 and 11 phase of tweeters diaphragmsEven, high pitch voice coil 12 is repelling and tweeters diaphragms 11 is driven to vibrate air with sounding under attracting active force.At this point, high pitch sound chamberAir in 10 is extruded or expands, so that most sound wave that voice unit issues can be communicated up by voice guide hole 30.
In addition, tweeters diaphragmse 21, the second fixed ring 23, the 4th fixed ring 24, magnetic circuit component 3 and the first basin body portion 41 are commonEnclose a closed bass sound chamber 20.Described 22 one end of bass coil connects tweeters diaphragmse 21, and the other end protrudes into bass soundIn chamber 20, the magnet 31 is that bass coil 22 provides fixed magnetic field, and tone currents is passed through in bass coil 22 can generate variationMagnetic field, the fixed magnetic field that changing magnetic field and magnet 31 provide interacts, and same polarity magnetic field is mutually exclusive, opposed polarity magneticField attracts each other.The bass coil 22 is connected with tweeters diaphragmse 21, and the bass coil 22 is being repelled and attracting active forceIt is lower that the tweeters diaphragmse 21 is driven to vibrate air with sounding.Therefore the air in bass sound chamber 20 is extruded or expands.Bass listMost sound wave that member issues can be communicated up through vibrating diaphragm 21.
Since the T iron 32 in magnetic circuit component 3 is in hollow columnar, and cooperate cyclic annular tweeters diaphragmse 21, tweeters diaphragms 11 and basinEach component part such as frame 4 forms above-mentioned high pitch sound chamber 10 and bass sound chamber 20, and is two independently separated sound chambers, althoughA magnet 31 is shared, but the intracavitary air of two sounds does not circulate mutually, therefore air crosstalk does not occur, avoids the production of audio mixingIt is raw.It is exported specifically, the voice unit issues sound wave by voice guide hole 30, and the sound wave that bass unit issues directly spreads out of and raisesSound device 100, two groups of sound independently issue as a result, sound field separation, generate clean sound quality, while using two of this structureThe structure of phonation unit is also more compact.
In other embodiments, voice unit, can replace with bass unit position.
Present embodiment also provides a kind of earphone, and the earphone includes the loudspeaker 100, as known to those skilled in the art, the earphone further includes the earphone case for installing the loudspeaker 100, and to the loudspeaker 100 provide source of sound andThe cable of electric current input.The cable is connected to the input terminal on the circuit board 5 in loudspeaker 100.
Embodiment of above is only for interpreting the claims.The right protection scope of the utility model is not limited toBright book.Anyone skilled in the art is in the technical scope that the utility model discloses, the change that can readily occur inChange or replace, is included within the protection scope of the utility model.