CN1112348A

CN1112348A - Balance sound box

Info

Publication number: CN1112348A
Application number: CN 95110908
Authority: CN
Inventors: 高诚
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-19
Filing date: 1995-07-19
Publication date: 1995-11-22

Abstract

The balanced sound box is composed of box body, effuser, magnet, barrier board and mechanically balanced structural member that has supporters for installing centralizing ring and magnet. By the mechanically balanced structural member, the reacting force generated by effuser and magnet is balanced with box body, so minimizing the resonance. Its advantages include good location of stereo sound field, high efficiency of sound radiation, and simple structure.

Description

Balance sound box

The present invention relates to a kind of audio amplifier.

Loud speaker as the mouthpiece who converts acoustic energy to by electric energy in the high fidelity sound system play a part to cause close important.As woofer when the sound-reducing must by with sound box in the damping action of air, the low-frequency minimum frequency of loud speaker is widened, the distortion when reducing sound-reducing and improve radiation efficiency.At present, traditional audio amplifier is that a kind of benzvalene form body of compositions such as the basin that shakes of loud speaker, magnet is installed on the baffle of sound box, and making the mounting plane of existing loud speaker and the baffle plane of being installed is a plane.On the one hand acoustic vibration is when taking place in loud speaker, and according to Newtonian mechanics the 3rd law: each active force must be accompanied same size, direction and its opposite reaction; Promptly follow each vibration of basin of shaking of loud speaker to produce a loud speaker support and push rightabout active force to, simultaneously the loud speaker installation baffle of the direction of this power and sound box by acoustic excitation after the direction of elastically-deformable power of the baffle that produces be consistent all the time, therefore, the synthetic elastic deformation that has aggravated the baffle of institute's installation loud speaker of two power, make the resonance aggravation of sound box, thereby make music reduction distortion; Be passed to the casing of audio amplifier during on the other hand owing to woofer generation acoustic vibration by support, this vibration diffuses to the loudspeaker unit of other frequency that is installed in same audio amplifier, make the frequency response effect of these unit be subjected to phase modulated, this phenomenon is the most outstanding with voice unit, makes the sound field location ambiguity when consequently resetting stereo music.For solving this defective, generally the method for Cai Yonging is to be equipped with the ribs of mechanics fixation or to do the width of casing wideer slightly than the diameter of woofer as far as possible on the casing of audio amplifier, contend with owing to the shake resonance of the audio amplifier that causes of woofer basin stand, to ribs because its employed material is general identical with tank material, fixing position is not on the contact of loud speaker that makes casing generation resonance and sound box, so the casing covibration shows comparatively outstandingly when the loud speaker acoustical power is big.Therefore, many advanced persons' audio amplifier factory makes one-piece box with the loudspeaker unit of each frequency and forms an audio amplifier in the world.Producing the country of this audio amplifier and board name and model has: Britain KEF Reference series; France DAVIS series; Britain B﹠amp; W Matrix 800 series; Britain OhmlXO, CAM-16 etc.; The manufacturing process of this audio amplifier is very loaded down with trivial details, and high pitch or height, middle pitch unit are placed on the bass one-piece box, have destroyed the globality of audio amplifier, is unfavorable for attractive in appearancely, still fails to solve the resonance problem of woofer simultaneously at all.The makers' engineer of Denmark's DALL audio amplifier once adopted with two back-to-back installation methods of woofer in the DALL-40 of nineteen eighty-three design series audio amplifier and solved caused casing resonance problem of loud speaker of single baffle installation, there is serious mutual interference effect in magnetic field between its two used loud speakers of this registered patent " connection of L formula " method, and influences the frequency and the power characteristic of woofer; Although it adopts the speaker magnet device of extremely strong power, but the polarity of the magnet arrangement of two loud speakers two close faces on the installation site is identical, magnetic line of force direction near the magnet arrangement of two loud speakers between opposite fully, and because the iron body after the speaker magnets is the high magnetic conductor of permeability, the magnetic field intensity of the magnet of this usefulness " L connection method " institute employing loud speaker is big more, and the magnetic interference effect between its two loud speakers is big more; And for using a woofer just can not adapt to as this method of audio amplifier occasion.Chinese patent CN 1030507A discloses a kind of Ultralight loudspeaker enclosures, and it is that at least one loudspeaker is fixed on a thermal conductivity preferably on the supporting part with the method for heat engagement, and this supporting part is an assembly of shell; Owing to its loudspeaker that adopt are a kind of whole tone frequency domains, adopt the excitation vibrating diaphragm to produce acoustic pressure, improve the audio amplifier of radiation efficiency by horn, the bass cut-off frequency of this loudspeaker is not suitable for the woofer in the high fidelity sound system than the bass cut-off frequency height of coil-moving speaker; Its vibrating diaphragm does not exist with sound box with magnet arrangement simultaneously the mechanical balance relation relevant with the vibration of loud speaker each other.Development along with hyundai electronics industry and technology thereof, make sound-reducing more and more higher to the specification requirement of the loud speaker of high fidelity sound system and audio amplifier thereof, the standard Hz-KHz of the international high-fidelity music center that International Power association issues had been done three times and had been widened, and the general character relation of having isolated loud speaker and audio amplifier as the manufacturing of existing loud speaker, do passive audio amplifier design according to existing loud speaker passively concerning audio amplifier factory, the audio amplifier of being produced has seemed and has not more and more caught up with the requirement of growing sound technique in this way.In fact, when existing woofer being made when more high-power, then need each parts of loud speaker are all made the deadweight of considering loud speaker more greatly and not and are mounted to the audio amplifier resonance problem that audio amplifier brings, and reduced acoustic technique index as final microphone device audio amplifier, because existing woofer is subjected to the restriction of mounting pot support, the basin that shakes is generally all shorter with the distance of centering ring simultaneously; When the basin generation sound that shakes shakes, the density and the thickness thereof of the material of basin can not be concentric unanimity fully owing to shake, again because the centering ring is shorter with the distance of the basin that shakes, and make voice coil loudspeaker voice coil and speech coil framework formation and magnet and the eccentric piston-like motion of iron core do that links to each other with shake basin and centering ring, and influence the stereo sound field location of audio amplifier.

The purpose of this invention is to provide and a kind ofly when sound-reducing, reach balance jointly by mechanical balance member and audio amplifier by shake basin body and reaction force that magnet arrangement produces, resonance is less when making sound box be subjected to acoustic excitation, and the basin shape support behind the existing speaker cones of cancellation, improve acoustic radiation efficiency; And audio amplifier stereo sound field location better, the balance sound box of the high-fidelity of the fidelity when improving the audio amplifier music playback.

Realize technology general plotting of the present invention be the baffle of magnet arrangement, the sound box of the basin body that shakes, loud speaker with sound box, loud speaker, by be connected and fixed Compositional balance formula audio amplifier with the mechanics balance component; Have the centering ring of the voice coil loudspeaker voice coil of the basin body that shakes that can be connected as a single entity with it that ring support of usefulness, the mounting bracket of magnet arrangement are installed on the mechanical balance member, the member of mechanical balance simultaneously can be made the integral type member that is connected as a single entity and shake basin body, magnet arrangement and upper and lower casing or boxboard Compositional balance formula audio amplifier with the mid portion of casing.

The technical scheme that realizes purpose of the present invention is the front baffle by sound box and casing; Baffle after the back of front baffle has one; The basin body that shakes of loud speaker; The magnet arrangement of loud speaker; On the baffle of front, be provided with the installing hole of the basin body that shakes; Between front baffle and back baffle by and the equidistant installation of basin body coaxial direction and axle center of shaking, make front baffle and back baffle two-way fixing, can make between the sound box baffle and the mechanical balance member of the common generation mechanical balance effect between basin body and the magnet arrangement of shaking of loud speaker is formed.

Above-mentioned balance sound box, ring support, magnet arrangement mounting bracket that described mechanical balance member is installed by balance connecting rod, centering ring are formed; The side baffle that the side of the front baffle of casing, back baffle and these two blocks of baffles links to each other can adopt processing methods such as mold pressing, casting to make the member of one with non-iron and ferroalloy materials with the mechanical balance member; And form by this member and upper box or boxboard and lower box or boxboard, the basin body that shakes, magnet arrangement.

Above-mentioned balance sound box, the basin body that shakes that useful adhesive is bonding or mechanical means installs and fixes on the described basin body installing hole limit that shakes, the basin body that shakes is made up of with bonding the interfixing of adhesive in coaxial direction basin edge break ring, the basin that shakes, centering ring, voice coil loudspeaker voice coil and speech coil framework; Before the back baffle of sound box, bonding or mechanical means of useful adhesive or the magnet arrangement that is connected and fixed with the mechanical balance member, cooperates and leave an air gap with the voice coil loudspeaker voice coil and the speech coil framework same axis of the basin body that shakes behind the basin body that shakes; Magnet arrangement by preceding iron body, iron core, back iron body, magnet or preceding iron body, integral type iron core after iron body and magnet form; Bian Shangyou and hole heart symmetry isogonism at the basin body installing hole that shakes distribute, fixedly mount the screw perforation of the balance connecting rod of mechanical balance member with screw, have on the baffle identically and corresponding vertical in the back, bore a hole with the screw of screw fixed installation balance connecting rod with the screw punch position of front baffle; Between the screw perforation front of the interior case face of the screw perforation back of the interior case face of front baffle and back baffle, the two end end areas balance connecting rod big than these two apertures arranged, be provided with the screw perforation that allows screw pass the front baffle at two end end face centers of balance connecting rod and the screw hole that cooperates and allow screw pass the screw perforation of back baffle and the screw hole of cooperation; Be provided with the ring support that usefulness is installed with the centering ring of the basin body coaxial direction of shaking on the centering ring plane of the basin body that shakes, this ring support can be connected as a single entity with the balance connecting rod or be provided with the perforation identical with the cross sectional shape of balance connecting rod on its limit, allow the balance connecting rod pass this hole with adhesive bonding or mechanical means and fixing; Centering ring with adhesive bonding or mechanical means and ring support fix; On the limit of ring support, be fixed with the two-way terminal block of the voice coil loudspeaker voice coil wiring of the basin body that shakes that connects the audio amplifier wiring; The back plane of iron body has the mounting bracket with the magnet arrangement of the basin body coaxial direction of shaking behind the back iron body of magnet arrangement or integral type iron core, this support can be connected as a single entity with the balance connecting rod or be provided with the perforation identical with the cross sectional shape of balance connecting rod on its limit, allow the balance connecting rod pass this hole, magnet arrangement with adhesive bonding or mechanical means and magnet arrangement mounting bracket fix.

Above-mentioned balance sound box, the basin body trim ring that shakes that positive useful adhesive on the outside of the basin edge break ring of the described basin body that shakes is adhesively fixed, on this trim ring and the Bian Shangyou of the basin edge break ring screw identical with screw punch position on the baffle of front bore a hole, this trim ring must be that coaxial direction is installed with the basin body that shakes, the basin body that shakes pass on the trim ring with screw and basin edge break ring limit on screw perforation, the screw perforation on the baffle of front and balance connecting rod on the screw that matches bore a hole and fix; It is that benchmark forms and intersects the centering point and voice coil loudspeaker voice coil and speech coil framework had a coaxial positioning effect that centering ring can be formed axial line with the basin body that shakes by front centering ring and reverse side centering ring, the front centering ring is identical circular cone cylindricality with the reverse side centering ring, and rightabout is adhesively fixed on the conical surface with positive and negative centering ring circular cone cylindricality of ring support parallel positive composition surface and anti-composition surface with adhesive, centering ring has preferably elasticity and prolongs ring heart direction retractility preferably, and the cross section of ring can be wave wrinkle shapes; The preceding iron body of magnet arrangement is bigger slightly than the external diameter of magnet, the screw perforation that distributes with magnet arrangement axle center symmetry isogonism is arranged on the circle limit of dishing out, on the magnet arrangement mounting bracket, have corresponding with screw perforation, distributing position is identical and keep the screw hole or the screw perforation of coaxial direction with the basin body that shakes, and magnet arrangement is fixed on the mounting bracket of magnet arrangement with connecting screw; The magnet arrangement connecting rod that is connected to a fixed with the back baffle can be arranged on the magnet arrangement mounting bracket; It is identical screw hole that the end face center of one end of magnet arrangement connecting rod is provided with screw hole, can magnet arrangement and magnet arrangement mounting bracket be fixed with connecting screw by this screw hole, the other end end face center of magnet arrangement connecting rod is a screw hole, fixes with the screw that matches by screw perforation corresponding with it on the baffle of back.

Above-mentioned balance sound box, the side direction mechanical balance connector that the ring support of usefulness is connected as a single entity is installed in can have with centering ring between the side baffle on described two limits at front baffle that connects audio amplifier and back baffle, on side direction mechanical balance connector, screw hole is arranged, corresponding with it screw perforation is arranged on the side baffle on two limits, do two-way fixing by the side baffle on screw and two limits; Between the side baffle on two limits of front baffle that connects audio amplifier and back baffle, the side direction mechanical balance connector that is connected as a single entity with the magnet arrangement mounting bracket can be arranged, on side direction mechanical balance connector, screw hole is arranged, corresponding with it screw perforation is arranged on the side baffle on two limits, do two-way fixing by the side baffle on screw and two limits; The magnet arrangement mounting bracket can cooperate magnet apparatus, directly be fixed on the baffle of back with screw according to the needs of voice coil loudspeaker voice coil and speech coil framework axial length with the basin body that shakes.

A kind of balance sound box is by the front baffle of sound box and casing; Baffle after the back of front baffle has one; The loud speaker that constitutes by the basin body that shakes, magnet arrangement and loud speaker mounting bracket; On the baffle of front, establish the installing hole of loud speaker; Between front baffle and back baffle by and the equidistant installation of loud speaker coaxial direction and axle center, make front baffle and back baffle two-way fixing, the loud speaker mechanical balance member of generation mechanical balance effect between the sound box baffle is formed.

Above-mentioned balance sound box, described loud speaker mechanical balance member is by balancing pole; Two end end face centers of balancing pole are provided with screw hole, and an end of balancing pole is installed screw by loud speaker and passed screw on the loud speaker and screw perforation corresponding with it on perforation and the front baffle is installed and fixes with front baffle and loud speaker; The vertical corresponding screw perforation of screw perforation on the baffle of front is arranged on the baffle of back, and the other end of balancing pole passes the screw perforation on the baffle of back by connecting screw and fixes with the back baffle; Form.

The present invention has positive effect: 1. separate respectively and the mechanical balance effect by the mechanical balance member of sound box front baffle and back baffle by shake basin body and magnet arrangement with loud speaker, the basin stand vibration of the loud speaker when having eliminated existing loud speaker sound substantially and shaking, the fidelity when having improved the loudspeaker sound reduction; 2. by the installation of mechanical balance member, the basin stand of having cancelled existing loud speaker hinders effect to the acoustic resistance of the basin that shakes, and has improved the radiation efficiency of loud speaker; 3. because shake basin body and magnet arrangement are fixed in audio amplifier by the mounting bracket of mechanical balance member respectively, the magnet of loud speaker etc. can be made greatlyyer, and the degree of depth that is not subjected to have the loud speaker support now limits, and easily makes the bigger balance sound box of rated power; 4. when the acoustical power of loud speaker is big,, and correspondingly obtain part mechanical balance because the direction of the vibration force that the baffle of the direction of the basin body that shakes vibration force when vibrating with the magnet arrangement generation and casing is produced by acoustic excitation is opposite all the time; Again because the mechanical balance effect of mechanical balance member, make that the vibration force transmission speed that produced is fast, distance is short, and by the mechanical balance effect of self, make various stress be able to balance, so having greatly, the resonance of balance sound box casing when sound-reducing reduces, and the fidelity of having improved the sound-reducing of audio amplifier; 5. owing to not limited by the degree of depth of existing loud speaker support, the distance of growing between can obtain shaking basin and the centering ring; The coaxial centering of voice coil loudspeaker voice coil and speech coil framework was better when the basin generation sound that shakes was shaken; Simultaneously, make the coaxial centering of speech coil framework, make the basin that shakes do desirable piston-like motion by its axis direction more satisfactoryly, improved the stereo sound field location of audio amplifier by the centering ring that intersects; Because this centering ring has elasticity preferably, the transient response of loud speaker is improved, and can improve the rated power of loud speaker relatively simultaneously; 6. it is simple to make balance sound box technology, and the basin stand handling ease of the existing loud speaker of the manufacturing of balance connecting rod and other member can reduce cost greatly to small-sized audio amplifier especially, and practicality is better.

Fig. 1 has the three-dimensional schematic sectional view of loudspeaker box structure of integral type member for the present invention.

Shake for the present invention the has loudspeaker box structure cross-sectional schematic of basin body trim ring of Fig. 2.

Fig. 3 has the loudspeaker box structure schematic cross-sectional cutaway view of the side direction balance connector of ring support and magnet arrangement mounting bracket for the present invention.

The structural representation cutaway view of the loud speaker mechanical balance member that Fig. 4 has for the present invention.

Fig. 5 is applied to the three-dimensional schematic sectional view of two divided-frequency phase inverted cabinet for Fig. 1.

Fig. 6 is applied to the cross-sectional schematic of two divided-frequency phase inverted cabinet for Fig. 2.

Fig. 7 is applied to the cross-sectional schematic of three frequency division phase inverted cabinet for Fig. 3.

Fig. 8 is applied to the cross-sectional schematic of four frequency division phase inverted cabinets for Fig. 1.

Embodiment 1

By Fig. 1, use the casting die suitable mutually with Fig. 1 integral type member (1), the aluminium alloy is a material, forms through casting, the demoulding, metal finish, aluminum alloy materials is non-iron and ferroalloy materials, and the magnetic field of magnet arrangement is not had bigger influence; Make the member (1) of one with casting and metal finish method, can improve the coaxial installation accuracy of the basin body that shakes (3), magnet arrangement (4), simple for assembly process, heat conduction simultaneously is better, helps dispelling the heat when loudspeaker voice coil is worked.The mechanical balance member (2) of integral type member (1) is to be connected as a single entity with the side baffle (10) that front baffle (11), back baffle (13) and this two baffle sides of casing link to each other by balance connecting rod (22), centering ring installation ring support (24), magnet arrangement mounting bracket (25), cross section, knuckle place between baffle is a circular arc, resonance ability in order to the sound box opposing is produced by acoustic excitation reduces to minimum with extraneous sound deflection influence; The basin body (3) that shakes is made up of with bonding the interfixing of adhesive in coaxial direction basin edge break ring (31), the basin that shakes (32), centering ring (33), voice coil loudspeaker voice coil and speech coil framework (34); Magnet arrangement (4) by preceding iron body (41), integral type iron core after iron body (46) and magnet (45) form back at magnet arrangement, be connected as a single entity and the coaxial with it magnet arrangement supporting mass (9) with the integral type member is arranged, in order to strengthen the mechanical balance effect of magnet arrangement; There is the front of protrusion to throw the limit on the interface limit of integral type member (1) and upper box and lower box, upper box and lower box are embedded in the groove, and be adhesively fixed and make box sealing with adhesive.

Embodiment 2

By Fig. 2, the distance of the interior case face of the interior case face of selection front baffle (11) and back baffle (13) is as the length of the balance connecting rod of mechanical balance member (2), with aluminium alloy is material, adopts the method for metal finish to make the mechanical balance member (2) that ring support (24), magnet arrangement mounting bracket (25) composition are installed with balance connecting rod (22), the centering ring of Fig. 1; The baffle of audio amplifier is to be made by middle density machine compacting plank, should accomplish fluently in advance and the equidistant screw perforation in basin body (3) coaxial direction and axle center (16) of shaking at front baffle (11) and back baffle (13), screw perforation (14) and screw perforation (15), the screw that selection matches makes front baffle (11) and back baffle (13) do two-way fixing by the framework of mechanical balance member (2) and sound box, make between the sound box baffle and the basin body that shakes (3) of loud speaker and magnet arrangement (4) between common generation mechanical balance effect, the audio amplifier baffle is adhesively fixed with adhesive between the limit.The basin body (3) that shakes is made up of with bonding the interfixing of adhesive in coaxial direction basin edge break ring (31), the basin that shakes (32), front centering ring (331), reverse side centering ring (332) and voice coil loudspeaker voice coil and speech coil framework (34); Front centering ring (331) and reverse side centering ring (332) are that benchmark forms and intersects centering point and to the coaxial positioning effect of voice coil loudspeaker voice coil and speech coil framework (23) with the axial line of the basin body that shakes (3), front centering ring (331) is identical circular cone cylindricality with reverse side centering ring (332), and rightabout is adhesively fixed on the conical surface with positive and negative centering ring circular cone cylindricality of ring support (24) parallel positive composition surface (241) and anti-composition surface (242) with adhesive; The basin body trim ring (35) that shakes that useful adhesive is adhesively fixed on the front on the outside of the basin edge break ring (31) of the basin body that shakes (3), this trim ring (35) go up and the Bian Shangyou of basin edge break ring (31) and front baffle on the identical screw perforation (341) in screw perforation (16) position of (11), the basin body that shakes (3) pass with screw (21) that trim ring (34) is gone up and basin edge break ring (31) limit on screw bore a hole (341), the screw of (11) is bored a hole the screw hole (221) that matches on (16) and the balance connecting rod (22) and is fixed on the baffle of front; Back baffle (13) at sound box is preceding, the magnet arrangement (4) that the useful adhesive in the basin body that shakes (3) back is adhesively fixed or adopts the mechanical engagement method to fix with mechanical balance member (2), cooperate and leave an air gap with the voice coil loudspeaker voice coil and speech coil framework (34) same axis of the basin body that shakes (3); Magnet arrangement (4) by preceding iron body (41), integral type iron core after iron body (46) and magnet (45) form; The preceding iron body (41) of magnet arrangement (4) is bigger slightly than the external diameter of magnet (45), the screw perforation (451) that distributes with magnet arrangement axle center symmetry isogonism is arranged on the circle limit of dishing out, on magnet arrangement mounting bracket (25), have corresponding with screw perforation (451), distributing position is identical and screw hole (251) or the screw perforation (252) coaxial with the basin body that shakes, and magnet arrangement (4) is fixed on the mounting bracket (25) of magnet arrangement with connecting screw (47); The magnet arrangement connecting rod (48) that is connected to a fixed with back baffle (13) is arranged on magnet arrangement mounting bracket (25); It is (251) identical screw hole (481) that the end face center of one end of magnet arrangement connecting rod (48) is provided with screw hole, with connecting screw (47) magnet arrangement (4) and magnet arrangement mounting bracket (48) are fixed by this screw hole (481), the other end end face center of magnet arrangement connecting rod (48) is screw hole (482), fixes with the screw (49) that matches by screw perforation (15) corresponding with it on the baffle of back.

Embodiment 3

By Fig. 2 and Fig. 3, all the other are with embodiment 2, difference is, between the side baffle (10) on two limits of front baffle (11) that connects audio amplifier and back baffle (13), can have and side direction mechanical balance connector (244) that ring support (24) is connected as a single entity, screw hole (245) is arranged on side direction mechanical balance connector (244), corresponding with it screw perforation (17) is arranged on the side baffle (10) on two limits, do two-way fixing by the screw (246) and the side baffle (10) on two limits; At the front baffle (11) that connects audio amplifier with afterwards between the side baffle (10) on two limits of baffle (13) the side direction mechanical balance connector (255) that is connected as a single entity with magnet arrangement mounting bracket (25) can be arranged, on this balance connector (255), screw hole (256) is arranged, corresponding with it screw perforation (18) is arranged on the side baffle (10) on two limits, do two-way fixing by the screw (257) and the baffle on two limits; Magnet arrangement mounting bracket (25) can cooperate magnet apparatus (4), directly be fixed on the baffle of back (13) with screw according to the needs of voice coil loudspeaker voice coil and speech coil framework (34) axial length with the basin body that shakes.The basin body (3) that shakes is made up of with bonding the interfixing of adhesive in coaxial direction basin edge break ring (31), the basin that shakes (32), centering ring (33), voice coil loudspeaker voice coil and speech coil framework (34); Magnet arrangement (4) is made up of preceding iron body (41), iron core (42), back iron body (43), magnet (45).

Embodiment 4.

By Fig. 4, the baffle of sound box is a density machine compacting plank in using, and adopts adhesive to be adhesively fixed and forms.Loud speaker by the basin body that shakes (3), magnet arrangement (4) and loud speaker mounting bracket formation; On front baffle (11), establish the installing hole (121) of loud speaker; Have between the interior case face of the interior case face of front baffle (11) and back baffle (13) and the equidistant installation of loud speaker coaxial direction and axle center can make the sound box baffle and and loud speaker between the loud speaker mechanical balance member (6) of generation mechanical balance effect, it is to form through metal finish with Cu alloy material.Loud speaker mechanical balance member (6) is by balancing pole (61); Two end end face centers of balancing pole (61) are provided with screw hole (62), and an end of balancing pole (61) is installed screw (62) by loud speaker and passed screw on the loud speaker and screw perforation (19) corresponding with it on perforation (5) and the front baffle (11) is installed and fixes with front baffle (11) and loud speaker; Go up vertical corresponding screw perforation (110) at back baffle (13), the other end of balancing pole (61) passes the screw perforation (110) on the back baffle (13) by connecting screw (63) and fixes with the back baffle.

Application examples 1.

By Fig. 1 and Fig. 5, get this balance sound box of embodiment 1 gained.Pass the screw perforation (102) that integral type member (1) goes up on the throwing limit face that interface protrudes by screw (101) and fix having above the integral type member with upper box (7), on the front baffle (11) of upper box (7), high pitch loudspeaker installing hole (19) is arranged, install on this hole high pitch loudspeaker (51) is installed; There is the screw perforation (104) on the throwing limit face that passes integral type member (1) lower interface protrusion by screw (103) to fix in the below of integral type member (1) with lower box (8); During the moving-coil type sound-producing device that is made of the basin body that shakes (3) and magnet arrangement (4) can be reset, low-frequency audio frequency, on lower box (8) back baffle (13), be provided with the audio amplifier terminal box, case internal fixation at lower box (8) has loudspeaker enclosure divider, and connects the high and low frequency unit by lead; Upper and lower casing is with glass fibre, compounded mix, the compression molding of heat curing-type polyester; The inner surface bonding baffle blanket of adhesive at casing promptly gets balance sound box.There is a little perforation (91) that communicates with the case outer air at the center of iron body (46) and coaxial with it magnet arrangement supporting mass (9) behind the integral type iron core, outside the heat guiding case that this perforation is produced in the time of effectively the basin body voice coil loudspeaker voice coil that shakes being worked, can improve the transient response of the basin body that shakes (3) simultaneously.

Application examples 2.

By Fig. 2 and Fig. 6, get this balance sound box of embodiment 2 gained.Be provided with high pitch loudspeaker installing hole (19) in the front of sound box baffle (11) top, high pitch loudspeaker (51) is installed on this hole; Be provided with the pipe made from the ABS engineering plastics of falling the case (54) between the basin body that shakes (3) of front baffle (11) and high pitch loudspeaker, phase-reversing tube (54) is bonded on the paraphase hole that baffle opens with adhesive; During the moving-coil type sound-producing device that is made of the basin body that shakes (3) and magnet arrangement (4) can be reset, low-frequency audio frequency, on back baffle (13), be provided with audio amplifier terminal box (72), interior case face top at back baffle (13) is fixed with loudspeaker enclosure divider (71), and connects the high and low frequency unit by lead (192); The inner surface bonding baffle blanket of adhesive (67) at casing promptly gets balance sound box.

Application examples 3.

By Fig. 4 and Fig. 7, get this balance sound box of embodiment 4 gained.In the front of sound box baffle (11) top high pitch loudspeaker (51) and Squawker (51) are installed; Woofer installing hole (121) is arranged and woofer is installed in the below of front baffle (11), be provided with the pipe made from the ABS engineering plastics of falling the case (54) below woofer, phase-reversing tube (54) is bonded on the paraphase hole that baffle opens with adhesive; On back baffle (13), be provided with audio amplifier terminal box (72), be fixed with loudspeaker enclosure divider (71) at the interior case basifacial of back baffle (13), and connect high, medium and low frequency unit by lead; The inner surface bonding baffle blanket of adhesive (67) at casing promptly gets balance sound box.

Claims

1, a kind of balance sound box is characterized in that, by the front baffle (11) of sound box and casing; Baffle (13) after the back of front baffle (11) has one; The basin body that shakes (3) of loud speaker; The magnet arrangement of loud speaker (4); On front baffle (11), be provided with the installing hole (12) of the basin body that shakes (3); Have between front baffle (11) and back baffle (13) with the basin body that shakes (3) coaxial direction and the equidistant installation in axle center, make front baffle (11) and back baffle (13) two-way fixing, the mechanical balance member (2) of generation mechanical balance effect is formed.

2, balance sound box according to claim 1 is characterized in that, described mechanical balance member (2) is made up of balance connecting rod (22), centering ring installation ring support (24), magnet arrangement mounting bracket (25); The side baffle (10) that the front baffle (11) of casing, back baffle (13) and this two baffle sides link to each other can adopt processing methods such as mold pressing, casting to make the member (1) of one with non-iron and ferroalloy materials with mechanical balance member (2); And form by this member (1) and upper box (7) or boxboard and lower box (8) or boxboard, the basin body that shakes (3), magnet arrangement (4).

3, according to claim 1 and 2 described balance sound boxes, it is characterized in that, the basin body that shakes (3) that useful adhesive is bonding or mechanical means installs and fixes on described basin body installing hole (12) limit that shakes, the basin body that shakes (3) is made up of with bonding the interfixing of adhesive in coaxial direction basin edge break ring (31), the basin that shakes (32), centering ring (33), voice coil loudspeaker voice coil and speech coil framework (34); Back baffle (13) at sound box is preceding, the magnet arrangement (4) that the useful adhesive in the basin body that shakes (3) back is bonding or mechanical means is fixed with mechanical balance member (2), cooperate and leave an air gap with the voice coil loudspeaker voice coil and speech coil framework (34) same axis of the basin body that shakes (3); Magnet arrangement (4) by preceding iron body (41), iron core (42), back iron body (43), magnet (45) or preceding iron body (41), integral type iron core after iron body (46) and magnet (45) form; Bian Shangyou and hole heart symmetry isogonism at the basin body installing hole (12) that shakes distribute, use screw (21) to fixedly mount the screw perforation (16) of the balance connecting rod (22) of mechanical balance member (2), on back baffle (13), have identical and corresponding vertical with screw perforation (16) position of front baffle (11), with the screw of screw (23) fixed installation balance connecting rod (22) bore a hole (14); Between screw perforation (14) front in screw perforation (16) back on the interior case face of front baffle (11) and the back baffle (13) on the case face the two end end areas balance connecting rod (22) bigger than these two apertures arranged, be provided with the screw that allows screw (21) pass on the front baffle (11) at two end end face centers of balance connecting rod and bore a hole (16) and the screw hole (221) of cooperation, and the screw that screw (23) passes on the back baffle (13) is bored a hole (14) and the screw hole (222) of cooperation; Be provided with the ring support (24) that usefulness is installed with the centering ring of basin body (3) coaxial direction of shaking on the centering ring plane of the basin body that shakes (3), this ring support (24) can be connected as a single entity or be provided with the perforation (224) identical with the cross sectional shape of balance connecting rod (22) on its limit with balance connecting rod (22), allow balance connecting rod (22) pass this hole (224) and fix with the bonding or mechanical means of adhesive; Centering ring (33) is fixed with bonding or mechanical means of adhesive and ring support (24); On the limit of ring support (23), be fixed with the two-way terminal block (231) of the voice coil loudspeaker voice coil wiring of the basin body that shakes (3) that connects the audio amplifier wiring; The back plane of iron body (46) has the mounting bracket (25) with the magnet arrangement (4) of basin body (3) coaxial direction of shaking behind the back iron body (43) of magnet arrangement (4) or integral type iron core, this support (25) can be connected as a single entity or be provided with the perforation (225) identical with the cross sectional shape of balance connecting rod (22) on its limit with balance connecting rod (22), allow balance connecting rod (22) pass this hole (225), magnet arrangement (4) is fixed with bonding or mechanical means of adhesive and magnet arrangement mounting bracket (25).

4, balance sound box according to claim 1 and 2, it is characterized in that, the basin body trim ring (35) that shakes that useful adhesive is adhesively fixed on the front on the outside of the basin edge break ring (31) of the described basin body that shakes (3), this trim ring (35) go up and the Bian Shangyou of basin edge break ring (31) and front baffle on the identical screw perforation (341) in screw perforation (16) position of (11), the basin body that shakes (3) passes trim ring (34) with screw (21) and goes up screw on the outside that reaches basin edge break ring (31) bore a hole (341), the screw hole (221) that matches on the screw of (11) perforation (16) and the balance connecting rod (22) on the baffle of front and fixing; It is that benchmark forms and intersects centering point and to the coaxial positioning effect of voice coil loudspeaker voice coil and speech coil framework (34) that centering ring (33) can be formed axial line with the basin body that shakes (3) by front centering ring (331) and reverse side centering ring (332), front centering ring (331) is identical circular cone cylindricality with reverse side centering ring (332), and rightabout is adhesively fixed on the conical surface with positive and negative centering ring circular cone cylindricality of ring support (24) parallel positive composition surface (241) and anti-composition surface (242) with adhesive; The preceding iron body (41) of magnet arrangement (4) is bigger slightly than the external diameter of magnet (45), the screw perforation (451) that distributes with magnet arrangement axle center symmetry isogonism is arranged on the circle limit of dishing out, on magnet arrangement mounting bracket (25), have corresponding with screw perforation (451), distributing position is identical and screw hole (251) or the screw perforation (252) coaxial with the basin body that shakes, and magnet arrangement (4) is fixed on the mounting bracket (25) of magnet arrangement with connecting screw (47); The magnet arrangement connecting rod (48) that is connected to a fixed with back baffle (13) can be arranged on magnet arrangement mounting bracket (25); It is (251) identical screw hole (481) that the end face center of one end of magnet arrangement connecting rod (48) is provided with screw hole, with connecting screw (47) magnet arrangement (4) and magnet arrangement mounting bracket (48) are fixed by this screw hole (481), the other end end face center of magnet arrangement connecting rod (48) is screw hole (482), fixes with the screw (49) that matches by screw perforation (15) corresponding with it on the baffle of back.

5, balance sound box according to claim 4, it is characterized in that, can have between the side baffle (10) on described two limits at front baffle (11) that connects audio amplifier and back baffle (13) and side direction mechanical balance connector (244) that ring support (24) is connected as a single entity, screw hole (245) is arranged on side direction mechanical balance connector (244), corresponding with it screw perforation (17) is arranged on the side baffle (10) on two limits, do two-way fixing by the screw (246) and the side baffle (10) on two limits; At the front baffle (11) that connects audio amplifier with afterwards between the side baffle (10) on two limits of baffle (13) the side direction mechanical balance connector (255) that is connected as a single entity with magnet arrangement mounting bracket (25) can be arranged, on this balance connector (255), screw hole (256) is arranged, corresponding with it screw perforation (18) is arranged on the side baffle (10) on two limits, do two-way fixing by the screw (257) and the baffle on two limits; Magnet arrangement mounting bracket (25) can cooperate magnet apparatus (4), directly be fixed on the baffle of back (13) with screw according to the needs of voice coil loudspeaker voice coil and speech coil framework (34) axial length with the basin body that shakes.

6, a kind of balance sound box is characterized in that, by the front baffle (11) of sound box and casing; Baffle (13) after the back of front baffle (11) has one; Loud speaker by the basin body that shakes (3), magnet arrangement (4) and loud speaker mounting bracket formation; On front baffle (11), establish the installing hole (121) of loud speaker; Between front baffle (11) and back baffle (13), have and the equidistant installation of loud speaker coaxial direction and axle center, make front baffle (11) and back baffle (13) two-way fixing, the loud speaker mechanical balance member (6) of generation mechanical balance effect between the sound box baffle is formed.

7, balance sound box according to claim 6 is characterized in that, described loud speaker mechanical balance member (6) is by balancing pole (61); Two end end face centers of balancing pole (61) are provided with screw hole (62), and an end of balancing pole (61) is installed screw (62) by loud speaker and passed screw on the loud speaker and screw perforation (19) corresponding with it on perforation (5) and the front baffle (11) is installed and fixes with front baffle (11) and loud speaker; Go up vertical corresponding screw perforation (110) at back baffle (13), the other end of balancing pole (61) passes the screw perforation (110) on the back baffle (13) by connecting screw (63) and fixes with the back baffle.