CN2266243Y - Coaxial double-field double-voice coil loudspeaker - Google Patents

Abstract

The utility model relates to a coaxial double-magnetic field double-voice coil loudspeaker. A pressure ring, a yoke ring, a periphery vibrating diaphragm, a middle vibrating diaphragm, a dust-proof cover, an inner corrugation support chip, an outer corrugation support chip, a big voice coil, a small voice coil, a magnetic conductivity pole plate, a core column, a positioning ring, a basin frame, a permanent magnet, an outer magnetic conductivity cover, etc. are connected to form the utility model, wherein, the middle vibrating diaphragm is respectively connected with the dust-proof cover, the small voice coil and the inner corrugation support chip, the periphery vibrating diaphragm is connected with the yoke ring, the middle vibrating diaphragm and the big voice coil connected with the inner corrugation support chip and the outer corrugation support chip connected with the basin frame, the positioning ring is connected with the basin frame and the outer magnetic conductivity cover, and the pressure ring is connected with the basin frame and the yoke ring. The loudspeaker has the advantages of large power, high sound pressure, good sound quality, and no magnetism leakage. A super-heavy bass can be additionally arranged. The utility model is easily matched with a power amplifier.

Description

Coaxial pair of magnetic field double-coil loudspeaker

The utility model is a coaxial pair of magnetic field double-coil loudspeaker, belongs to the electroacoustic techniques field.

Existing loud speaker kind is a lot, and electromagnetic type, moving-coil type, piezoelectric type, electrostatic etc. are arranged, and what use the most extensively is coil-moving speaker.But commercially available coil-moving speaker exists following problem and shortcoming: (1) permanent magnet utilance is low.Its reason one is an internal magnetization because voice coil diameter restriction and magnet is little, and acoustic pressure is low; The 2nd, though external magnetic type is the strong leakage magnetic field (being commonly called as leakage field) in magnetic field; (2) existing main loudspeaker system has turned round and look at gamut and has not just turned round and look at mega bass owing to be the single-tone circle; (3) the single-tone circle is raised device change tone color difficulty; (4) increase the acoustical power difficulty.In the existing loud speaker coaxial loudspeaker is also arranged, but its voice coil loudspeaker voice coil all is to be in single magnetic field.

The purpose of this utility model be exactly for overcome the power that existing coil-moving speaker exists little, be difficult for adding mega bass, change tone color difficulty, the low shortcomings such as (leakage fields) of magnets magnetic fields utilance, and a kind of highly sensitive, magnetic leakage free of research and design, the broadcasting that can add mega bass easily and don't change original gamut, the New Times mega bass requirement of the household audio and video system of rise down can be satisfied, high-quality, the powerful coaxial pair of magnetic field double-coil loudspeaker of tone color can be changed again for the music-lover.

The utility model is realized by following organization plan: the structural representation of coaxial pair of magnetic field double-coil loudspeaker as shown in Figure 1.It by pressure ring 1, yoke ring (elastic edge) 2, periphery vibrating diaphragm 3, middle vibrating diaphragm 4, dust cover 5, interior ripple prop up sheet 6, big voice coil loudspeaker voice coil and skeleton 7 thereof, outer ripple props up sheet 8, little voice coil loudspeaker voice coil and skeleton 9 thereof, magnetic conduction pole plate 10, magnetic conductive core column 11, locating ring 12, basin frame 13, permanent magnet 14, outer magnetism-guiding hood 15 common bondings mutually or riveted joint and connects and composes.Its interconnected relationship is: dust cover 5 and middle vibrating diaphragm 4 bonding connections, middle vibrating diaphragm 4 and little voice coil loudspeaker voice coil 9 bonding connections, interior ripple prop up sheet 6 respectively with little voice coil loudspeaker voice coil 9 and 7 bonding connections of big voice coil loudspeaker voice coil, periphery vibrating diaphragm 3 and yoke ring (elastic edge) 2, middle vibrating diaphragm 4 and big voice coil loudspeaker voice coil 7 bonding connections, big voice coil loudspeaker voice coil 7 props up sheet 8 with outer ripple and interior ripple props up sheet 6 bonding connections, outer ripple props up sheet 8 and basin frame 13 bonding connections, the size voice coil loudspeaker voice coil is around in its skeleton 7 respectively, on 9 and be positioned magnetic gap central authorities, be bonded in magnetic conduction pole plate 10 and outer magnetism-guiding hood 15 and the bonding on the permanent magnet or be riveted on the magnetic field of magnetic conductive core column's 11 formation magnetic gaps at outer magnetism-guiding hood 15 centers, locating ring 12 bonds with basin frame 13 and outer magnetism-guiding hood 15 or riveted joint is connected, make whole magnetic circuit system fastening with the basin frame firmly, pressure ring 1 and basin frame 13 and yoke ring 2 (elastic edge) bonding connection.The style of work principle of this coaxial pair of magnetic field double-coil loudspeaker and the operation principle of existing coil-moving speaker are basic identical.When existing single-tone circle list magnetic field coil-moving speaker operation principle is based on voice coil loudspeaker voice coil and adds the tone currents signal, produce vibration force with the magnetic field interaction of former permanent magnet and impose on vibrating diaphragm, make the vibrating diaphragm vibration sounding.The action principle of double-tone circle is also the same, and just many voice coil loudspeaker voice coils produce many magnetic fields vibrating diaphragm is imposed on oscillating action power---vibration force in parallel.But require the vibration force homophase of these two parallel connections, synchronously, otherwise the cross (talk) modulation can take place.Therefore, to require be that same tone currents signal (getting final product as two voice coil loudspeaker voice coils are in parallel) is separated or added simultaneously to same signal source to the audio signal that is added on two voice coil loudspeaker voice coils.Certainly, the amplitude of two signals can be identical or different, like this can adjustment tonequality.Because the double-tone circle, tone currents strengthens, and vibration force F also strengthens, and acoustic pressure increases thereupon.

The utility model is compared with existing loud speaker following advantage and beneficial effect: (1) can be bigger than the line footpath of little voice coil loudspeaker voice coil because of the line footpath of big voice coil loudspeaker voice coil, so it bears power and radiating effect is all bigger, owing to of the driving of two magnetic fields double-tone circle to vibrating diaphragm, the acoustic pressure height, power will be for more than the original twice; (2) because the double-tone circle drives vibrating diaphragm (driving) jointly on two different-diameters of vibrating diaphragm, to the control of vibrating diaphragm sounding better, it is little to cut apart vibration, thereby the distortion factor is little; (3) acoustical power of regulating two voice coil loudspeaker voice coils is distributed the tonequality that can change loud speaker; (4) vibrating diaphragm because of this loud speaker is formed by periphery vibrating diaphragm and middle vibrating diaphragm compoiste adhering, and two diaphragm materials can be identical or different, and this digs the condition of having made for development high-fidelity loud speaker; (5) this loud speaker can improve the low frequency characteristic of loud speaker, for example on big voice coil loudspeaker voice coil, add controlled mega bass signal (this signal can obtain from the mega bass power amplifier that original signal is separated), thereby solved the mega bass problem of " household audio and video system " of present rise, and needn't add the mega bass case; Suitable especially to mobile or small-sized motion picture projection team, because need not be again with going up big and stupid mega bass case; (6) because of the double-tone circle is arranged, utilize serial or parallel connection can change the impedance of loud speaker, easier and power amplifier is complementary; (7) this loud speaker magnetic field utilance height, not magnetic leakage.The design of two Magnetic Field Design has just utilized the energy of permanent magnet to heavens.Because leakage field does not make it can be applicable to the equipment that does not allow magnetic disturbance.

Figure of description is further specified as follows: Fig. 1 is the structural representation of coaxial pair of magnetic field double-coil loudspeaker; Fig. 2 is the production installation diagram of one of embodiment.Among the figure: 1 is pressure ring, and 2 is yoke ring (elastic edge), and 3 is the periphery vibrating diaphragm, 4 is middle vibrating diaphragm, and 5 is dust cover, and 6 prop up sheet for interior ripple, 7 is big voice coil loudspeaker voice coil and skeleton thereof, and 8 prop up sheet for outer ripple, and 9 is little voice coil loudspeaker voice coil and skeleton thereof, 10 is the magnetic conduction pole plate, 11 is magnetic conductive core column, and 12 is locating ring, and 13 is the basin frame, 14 is permanent magnet, and 15 is outer magnetism-guiding hood.

Execution mode of the present utility model can be as follows: enforcement of the present utility model, make comparatively simply, it is a novelty, the combination of the large and small loud speaker of a shared basin frame cleverly in fact.Thereby the manufacturing mode of its production, enforcement and existing coil-moving speaker is basic identical, as long as, just can manufacture the utility model preferably by Fig. 1, shown in Figure 2 design and the above the interconnected relationship of each parts of by specification is carried out assembling, the bonding connection of loud speaker---coaxial pair of magnetic field double-coil loudspeaker.Fig. 2 is that illustration is implemented in the production assembling of coaxial pair of magnetic field double-coil loudspeaker of 6.5 inches bores.Dimensional units is millimeter among the figure, φ 1=168 wherein, φ 2=76, φ 3=26, φ 4=25, φ 5=77, φ 6=87, H=80, n=25, a=5, b=20.

Claims (1)

1. A kind of coaxial pair of magnetic field double-coil loudspeaker, it is characterized in that: each voice coil loudspeaker voice coil is in the different magnetic field, it is by pressure ring (1), yoke ring (elastic edge) (2), periphery vibrating diaphragm (3), middle vibrating diaphragm (4), dust cover (5), interior ripple props up sheet (6), big voice coil loudspeaker voice coil and skeleton (7) thereof, outer ripple props up sheet (8), little voice coil loudspeaker voice coil and skeleton thereof (9), magnetic conduction pole plate (10), magnetic conductive core column (11), locating ring (12), basin frame (13), permanent magnet (14), outer magnetism-guiding hood (15) bonds jointly or rivets and connects and composes, its interconnected relationship is: dust cover (5) and middle vibrating diaphragm (4) bonding connection, middle vibrating diaphragm (4) and little voice coil loudspeaker voice coil (9) bonding connection, interior ripple prop up sheet (6) respectively with little voice coil loudspeaker voice coil (9) and bonding connection of big voice coil loudspeaker voice coil (7), periphery vibrating diaphragm (3) and yoke ring (elastic edge) (2), middle vibrating diaphragm (4) and big voice coil loudspeaker voice coil (7) bonding connection, big voice coil loudspeaker voice coil (7) props up sheet (8) with outer ripple and interior ripple props up sheet (6) bonding connection, outer ripple props up sheet (8) and basin frame (13) bonding connection, the size voice coil loudspeaker voice coil is around in its skeleton (7) respectively, (9) on and be positioned magnetic gap central authorities, be bonded in magnetic conduction pole plate (10) and outer magnetism-guiding hood (15) and the bonding on the permanent magnet or be riveted on the magnetic field of magnetic conductive core column (11) the formation magnetic gap at outer magnetism-guiding hood (15) center, locating ring (12) bonds with basin frame (13) and outer magnetism-guiding hood (15) or riveted joint is connected, pressure ring (1) and basin frame (13) and yoke ring (elastic edge) (2) bonding connection.

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