A triple full-frequency in-phase loudspeaker

Abstract

The present invention discloses a triple full-frequency in-phase loudspeaker, which includes a base, a permanent magnet, an audio excitation coil, a loudspeaker bracket, an audio vibration coil, a magnetic flux washer, a paper cone, a dust cover, a piezoelectric ceramic vibrating piece, and a centering spider. The present invention can break down the edge effect of the loudspeaker structure, correct the amplitude deformation of sound waves in real time, restore the correct sound waveform, achieve original sound restoration, overcome the mistakes of the paper cone blocking sound and phase inversion chaos, enhance the sound pressure of the audio peak force effect on the disc surface, highlight the sound head, thereby expanding the amplitude of the sound strength change, significantly restoring the sound head, sound intensity, sound length, as well as the material of the sound source and the sound production state, etc. The charm of the sound is rich and real, especially suitable for restoring the artistic characteristics of sound, can enhance the force effect of the loudspeaker, greatly reduce the power ratio of the electrical effect, improve the electroacoustic restoration efficiency, correct the excessive sound intensity, be more suitable for human auditory tolerance, and can avoid the trouble of sound noise between neighbors.

Description

Technical Field

[0001] The present invention relates to the technical field of loudspeakers, and specifically refers to a triple full-range in-phase loudspeaker. Background Art

[0002] There are some problems with current moving coil loudspeakers: ① There is a disk edge effect in the structure of moving coil loudspeakers: the spider and the surround limit the initial and final positions of the vibration of the disk surface, and maintain a tug on the vibrating sound-emitting disk surface during the limited stroke, which can maintain the compliance and axiality of the vibrating disk surface and limit the movement of the voice coil within the effective magnetic force area; this limitation and tug of the spider and the surround on the disk surface of the vibrating disk body are compliant movements of action and reaction forces, which severely restrict the vibration effect of the disk surface; the disk surface responds to the vibration of the audio vibration coil. First of all, the peak value of the disk surface vibration is cut off because the vibration of the disk surface is "held" by the spider and the surround; furthermore, the disk body vibration takes the center of the disk body (thickness center) as the origin. During the first audio positive half cycle (being tugged), it fails to extend to the peak position, and its negative half cycle (the reaction force tugging the positive half cycle is superimposed) will exceed the trough position; during the second audio positive half cycle (the reaction force of the previous negative half cycle is superimposed), it will exceed the peak position, and its negative half cycle (the reaction force tugging the positive half cycle is superimposed) will even more exceed the trough position; the overall effect is that the waveform of the sound is the shape of the audio waveform after being stretched in amplitude, and the original waveform of the audio is damaged, and the sound will inevitably be distorted; when the sound wave amplitude is distorted, the vibration peak value of the disk body disk quality is floatingly migrated to the outer spaces on both sides of the disk body, which not only makes the force point of the disk surface pushing the air become virtual, and the sound pressure will inevitably be reduced, but also the starting point of the sound is in the outer spaces on both sides of the disk body, which is likely to mislead the hearing and cause the effect that the disk body blocks the sound on both sides and there are always many sounds that cannot come out of the loudspeaker; the disk edge effect of the moving coil loudspeaker makes the restored sound distorted, the sound pressure is poor, and it causes an auditory error of disk body blockage; currently, there is no loudspeaker product that truly eliminates the disk edge effect. ② There are objective limitations in the frequency response resonance characteristics of the loudspeaker material, and currently there is no single loudspeaker with truly excellent full frequency response. ③ During the electroacoustic conversion process, the force effect and the electrical effect simultaneously consume the peak power of the audio wave, reducing the intensity change of the sound, resulting in the effect that weak sounds are too small or invisible, and strong sounds are too large or in conflict, especially the change process of the sound is severely reduced and distorted. Summary of the Invention

[0003] To solve the above technical problems, the technical solution provided by the present invention is: a triple full-frequency in-phase loudspeaker, including a T-shaped base composed of a chassis and a chassis column. One end of the chassis column close to the chassis is provided with a permanent magnet on its outer side, and an audio excitation coil is arranged outside the permanent magnet. One end of the chassis column far from the chassis extends into the speaker bracket, and an audio vibration coil is arranged outside it. A magnetic conductive wasp is arranged outside the audio vibration coil. One end of the speaker bracket far from the base is provided with a paper cone outside it. A dust cover corresponding to the speaker bracket is arranged at the center of the paper cone. A piezoelectric ceramic vibration sheet is arranged inside the dust cover. A centering spider connecting the speaker bracket and the inner wall of the paper cone is arranged inside one end of the paper cone close to the magnetic conductive wasp.

[0004] As an improvement, it further includes a power adjustment frequency divider accessory. The power adjustment frequency divider accessory includes a frequency division non-polar capacitor and a power adjustment resistor. The audio excitation coil is connected in series with the audio vibration coil. The power adjustment resistor is connected to both ends of the audio excitation coil. The frequency division non-polar capacitor is connected in series with the piezoelectric ceramic vibration sheet and is connected to both ends of the audio excitation coil and the audio vibration coil.

[0005] As an improvement, the permanent magnet, the audio excitation coil, the audio vibration coil, and the magnetic conductive wasp are all of annular structures.

[0006] As an improvement, the outer edge end of the paper cone is provided with a folded edge bent inward.

[0007] As an improvement, the piezoelectric ceramic vibration sheet is a double-sided piezoelectric ceramic vibration sheet.

[0008] As an improvement, the dust cover is a spherical dust cover.

[0009] As an improvement, the DC static N / S polarity of the audio excitation coil is the same as the N / S polarity of the permanent magnet to achieve static like-pole superposition. The wire diameter of the audio excitation coil is 200%-1000% of the wire diameter of the audio vibration coil, and the resistance value of the audio excitation coil is 25%-50% of the resistance value of the audio vibration coil.

[0010] As an improvement, the power adjustment resistor is a 5W-10W ceramic cement resistor, and its resistance value is equal to the resistance value of the audio excitation coil.

[0011] As an improvement, the electro-acoustic power value of the piezoelectric ceramic vibration sheet is 30%-50% of the electro-acoustic power of the audio vibration coil.

[0012] After adopting the above structure, the present invention has the following advantages: 1. The triple full-frequency in-phase loudspeaker of the present invention uses audio excitation to break down the edge effect of the loudspeaker structure, corrects the amplitude deformation of the sound wave in real time, restores the correct sound waveform, realizes the restoration of the original sound, and overcomes the problems of the paper cone blocking the sound and the phase inversion chaos.

[0013] 2. The triple full-frequency in-phase loudspeaker of the present invention enhances the sound pressure of the audio wave crest force effect on the disk surface through the force effect of audio excitation being in the same phase as the moving coil audio, highlighting the sound head of the sound, thereby expanding the amplitude range of the sound intensity change, significantly restoring the sound head, sound intensity, sound length, as well as the material of the sound source and the sound production state, etc. The charm of the sound is rich and real, and it is especially suitable for restoring the characteristics of sound art.

[0014] 3. The triple full-frequency in-phase loudspeaker of the present invention uses audio excitation to enhance the force effect of the loudspeaker, greatly reducing the power ratio of the electrical effect, improving the electroacoustic restoration efficiency, correcting the excessive sound intensity, being more suitable for the auditory tolerance of people, and avoiding the annoyance of sound noise between neighbors.

[0015] 4. The triple full-frequency in-phase loudspeaker of the present invention uses a coaxial and in-phase series combination of multiple materials, moving coils, and piezoelectric vibration, enabling a single loudspeaker assembly to be well-suited for full-frequency response and reducing the raw materials for speaker manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a triple full-frequency in-phase loudspeaker of the present invention.

[0017] Figure 2 It is a schematic diagram of the power adjustment and frequency division circuit of a triple full-frequency in-phase loudspeaker of the present invention.

[0018] As shown in the figure: 1. Chassis, 2. Chassis column, 3. Permanent magnet, 4. Audio excitation coil, 5. Loudspeaker bracket, 6. Audio vibration coil, 7. Magnetic flux concentrator, 8. Paper cone, 9. Dust cap, 10. Piezoelectric ceramic vibration plate, 11. Centering spider, 12. Power adjustment and frequency division accessory, 13. Flange, R. Power adjustment resistor, U. Frequency division non-polar capacitor, Y. Piezoelectric ceramic vibration plate, L1. Audio excitation coil, L2. Audio vibration coil. DETAILED DESCRIPTION OF THE INVENTION

[0019] Combined with the attached drawings, a triple full-frequency in-phase loudspeaker includes a T-shaped base composed of a chassis 1 and a chassis column 2. One end of the chassis column 2 close to the chassis 1 is provided with a permanent magnet 3 on its outer side, an audio excitation coil 4 is arranged outside the permanent magnet 3, one end of the chassis column 2 far from the chassis 1 extends into the loudspeaker bracket 5, and an audio vibration coil 6 is arranged on its outer side. A magnetic flux concentrator 7 is arranged outside the audio vibration coil 6. One end of the loudspeaker bracket 5 far from the base 1 is provided with a paper cone 8 on its outer side. A dust cap 9 corresponding to the loudspeaker bracket 5 is arranged at the center of the paper cone 8. A piezoelectric ceramic vibration plate 10 is arranged on the inner side of the dust cap 9. A centering spider 11 connecting the loudspeaker bracket 5 and the inner wall of the paper cone 8 is arranged inside one end of the paper cone 8 close to the magnetic flux concentrator 7.

[0020] Preferably, as an embodiment of the present invention, it further includes a power regulating and frequency dividing attachment 12. The power regulating and frequency dividing attachment 12 includes a frequency dividing non-polar capacitor and a power regulating resistor. The audio exciting coil 4 is connected in series with the audio vibrating coil 6. The power regulating resistor is connected across the two ends of the audio exciting coil 4. The frequency dividing non-polar capacitor is connected in series with the piezoelectric ceramic vibrating piece 10 and is connected across the two ends of the audio exciting coil 4 and the audio vibrating coil 6.

[0021] Preferably, as an embodiment of the present invention, the permanent magnet 3, the audio exciting coil 4, the audio vibrating coil 6, and the magnetic permeable Washer 7 are all of annular structure.

[0022] Preferably, as an embodiment of the present invention, the outer edge end of the paper cone 8 is provided with a folded edge 13 that bends inward.

[0023] Preferably, as an embodiment of the present invention, the piezoelectric ceramic vibrating piece 10 is a double-sided piezoelectric ceramic vibrating piece.

[0024] Preferably, as an embodiment of the present invention, the dust cover 9 is a spherical dust cover.

[0025] Preferably, as an embodiment of the present invention, the DC static N / S polarity of the audio exciting coil is the same as the N / S polarity of the permanent magnet to achieve static like-pole superposition. The wire diameter of the audio exciting coil is 200%-1000% of the wire diameter of the audio vibrating coil. The resistance value of the audio exciting coil is 25%-50% of the resistance value of the audio vibrating coil.

[0026] Preferably, as an embodiment of the present invention, the power regulating resistor is a 5W-10W ceramic cement resistor, and its resistance value is equal to the resistance value of the audio exciting coil.

[0027] Preferably, as an embodiment of the present invention, the electro-acoustic power value of the piezoelectric ceramic vibrating piece is 30%-50% of the electro-acoustic power of the audio vibrating coil.

[0028] When the present invention is specifically implemented: 1. It realizes the combination of static and dynamic magnetic fields, permanent magnet + exciting coil:

[0029] The exciting coil is connected in series with the audio vibration coil, and the power is distributed in a 1:2 ratio. The audio excitation and the solid permanent magnet are guided by the same magnetic conductive Washer, so that the effective magnetic field changes with the audio: in each positive half cycle of the audio, the magnetic force is enhanced, and in the negative half cycle, the magnetic force is weakened; since the magnetic force change of the audio exciting coil is synchronized with the audio change of the audio vibration coil, that is, peak to peak and trough to trough, the force effect of the audio vibration coil causes the paper disc to vibrate. The vibration of the paper disc takes the middle of the paper disc (thickness center) as the origin. In the first positive half cycle of the audio (the thrust is enhanced due to the enhanced magnetic force, offsetting the involved force effect), it can extend to the peak position, and its negative half cycle (the thrust is weakened due to the weakened magnetic force, offsetting the reaction force that was superimposed on the involved positive half cycle) will not exceed the trough position; in the second positive half cycle of the audio (the reaction force of the previous negative half cycle is offset by the excitation, and the reaction force involved in this positive half cycle is offset by the increased thrust due to the enhanced magnetic force), it can extend to the peak position, and its negative half cycle (the thrust is weakened due to the weakened magnetic force, offsetting the reaction force that was superimposed on the involved positive half cycle) will not cross the trough position; therefore, the overall effect is that the waveform of the sound is controlled within the interval of the original peak and trough positions of the audio, the original waveform of the audio power is accurately restored, and the sound is real; the vibration peak of the paper disc quality is within the two side surfaces of the disc body, making the force application point of the paper disc hitting the air concentrated on the substantial surface of the disc, and the sound pressure is naturally solid. Moreover, the starting point of the sound is on the disc surface, which is easy to trigger the auditory sense of the surging sound; therefore, through the dynamic control of the audio excitation, the edge effect of the speaker is effectively eliminated, the real sound waveform is restored, and the real dynamics of the sound are guaranteed; by participating in the electromagnetic force effect through the audio excitation, the efficiency of converting the audio current into sound is improved.

[0030] 2. The combination of moving coil and piezoelectric double vibration is realized. The audio vibration coil + double-sided piezoelectric ceramic vibration piece form a moving coil and piezoelectric vibration sound generation mode: the piezoelectric ceramic vibration piece is press-fitted and installed in the spherical dust cover, and the high frequency blocked by the audio exciting coil is connected in series and superposed coaxially and in the same phase on the disc surface of the disc body, overcoming the adverse characteristics of the elastic wave, the folded edge and the paper basin material for high frequency resonance, and ensuring the full and real high, middle and low frequency responses of the vibrating disc surface.

[0031] 3. The combination of power adjustment and frequency division is realized. The power adjustment and frequency division device is composed of an exciting coil + a power adjustment shunt resistor + a frequency division non-polar capacitor:

[0032] The frequency division non-polar capacitor and the audio exciting coil form a two-band shunt for high frequency, sub-high, middle and low frequencies. Among them, the audio exciting coil outputs the full frequency to the audio vibration coil, and the frequency division non-polar capacitor outputs the high frequency power blocked by the exciting coil to the double-sided piezoelectric ceramic vibration piece; the value of the power adjustment shunt resistor = the resistance value of the exciting coil. The exciting coil and the power adjustment resistor are connected in parallel, and then the whole is connected in series with the audio vibration coil; through power adjustment and frequency division, a major breakthrough has been made in the excellent working conditions of the speaker under large, medium and small power inputs.

[0033] The above description of the present invention and its implementation manners is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. In general, if those of ordinary skill in the art are inspired by it and design, without creative efforts, structural manners and embodiments similar to the technical solution without departing from the gist of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A triple full-frequency in-phase loudspeaker, characterized in that It includes a T-shaped base composed of a chassis and chassis columns. One end of the chassis column close to the chassis is provided with a permanent magnet on its outer side. An audio excitation coil is provided outside the permanent magnet. One end of the chassis column far from the chassis extends into a speaker bracket, and an audio vibration coil is provided outside it. A magnetic conductive washer is provided outside the audio vibration coil. One end of the speaker bracket far from the base is provided with a paper cone outside it. A dust cover corresponding to the speaker bracket is provided at the center of the paper cone. A piezoelectric ceramic vibration plate is provided inside the dust cover. A centering corrugated sheet connecting the speaker bracket and the inner wall of the paper cone is provided inside one end of the paper cone close to the magnetic conductive washer; It further includes a power regulation and frequency division accessory. The power regulation and frequency division accessory includes a frequency division non-polar capacitor and a power regulation resistor. The audio excitation coil and the audio vibration coil are connected in series, and the power is distributed in a 1:2 ratio. The power regulation resistor is connected to both ends of the audio excitation coil. The frequency division non-polar capacitor is connected in series with the piezoelectric ceramic vibration plate and is connected to both ends of the audio excitation coil and the audio vibration coil.

2. The triple full-frequency in-phase loudspeaker according to claim 1, characterized in that, The permanent magnet, the audio excitation coil, the audio vibration coil, and the magnetic conductive washer are all of annular structures.

3. The three-way full-range in-phase speaker according to claim 1, characterized in that, The outer edge end of the paper cone is provided with a folded edge bent inward.

4. A triple full-frequency in-phase loudspeaker according to claim 1, wherein, The piezoelectric ceramic vibration plate is a double-sided piezoelectric ceramic vibration plate.

5. The triple full-range in-phase loudspeaker according to claim 1, wherein The dust cover is a spherical dust cover.

6. The triple full-frequency in-phase loudspeaker according to claim 1, wherein The DC static N / S polarity of the audio excitation coil is the same as the N / S polarity of the permanent magnet to achieve static like-pole superposition. The wire diameter of the audio excitation coil is 200%-1000% of the wire diameter of the audio vibration coil. The resistance value of the audio excitation coil is 25%-50% of the resistance value of the audio vibration coil.

7. The tri-band full-range in-phase loudspeaker according to claim 1, wherein The power regulation resistor is a 5W-10W ceramic cement resistor, and its resistance value is equal to the resistance value of the audio excitation coil.

8. The tri-band full-range in-phase loudspeaker according to claim 1, wherein The electro-acoustic power value of the piezoelectric ceramic vibration plate is 30%-50% of the electro-acoustic power of the audio vibration coil.

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