CN111586538A

CN111586538A - Triple full-frequency normal-phase loudspeaker

Info

Publication number: CN111586538A
Application number: CN202010337689.2A
Authority: CN
Inventors: 苏惠镳; 梁建梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-08-25

Abstract

The invention discloses a triple full-frequency normal phase loudspeaker, which comprises a base, a permanent magnet, an audio excitation coil, a loudspeaker bracket, an audio vibration coil, a magnetic conduction Wheats, a paper disc, a dust cover, a piezoelectric ceramic vibrating reed and a centering elastic wave plate, wherein the triple full-frequency normal phase loudspeaker can break down the disc edge effect of the loudspeaker structure, correct sound amplitude deformation is corrected in real time, correct sound waveform is restored, original sound restoration is realized, the errors of paper disc barrier sound and phase inversion confusion are overcome, the sound pressure of an audio crest force effect on the disc surface can be enhanced, the sound head of sound is highlighted, the strength change amplitude of sound is expanded, the contents of the sound head, sound intensity, sound length, sound production object material, sound production state and the like are obviously restored, the sound has rich and real sound quality, and is particularly suitable for the restoration of artistic characteristics, the sound force effect of the loudspeaker can be enhanced, the power ratio of electric effect, correcting the excessive sound intensity, being more suitable for the hearing tolerance of people and avoiding the sound noise trouble among neighbors.

Description

Triple full-frequency normal-phase loudspeaker

Technical Field

The invention relates to the technical field of loudspeakers, in particular to a triple full-frequency normal-phase loudspeaker.

Background

There are some problems with current moving coil speakers: firstly, the structure of the moving coil loudspeaker has a disc edge effect: the vibration of the disk surface is limited by the elastic wave and the edge, the initial position and the final position are kept, the vibrating sounding disk surface is kept dragged in the limited stroke, the smoothness and the axiality of the vibrating disk surface can be kept, and the voice coil is limited to move in the range of the effective magnetic force area; the limitation and dragging of the elastic waves and the folded edges to the disk surface of the vibrating disk body are compliant motions of acting force and reacting force, which seriously restrict the vibration effect of the disk surface; the disk surface of the disk body responds to the vibration from the audio vibration coil, firstly, the peak value of the disk surface vibration is cut off, and the disk surface vibration is held by the elastic waves and the folding edges; moreover, the vibration of the disc body takes the middle (thickness center) of the disc body as an origin, the first audio positive half cycle (dragged) cannot extend to the peak position, and the negative half cycle (the reaction force of the dragging positive half cycle is superposed) of the first audio negative half cycle exceeds the trough position; the second audio positive half cycle (the reaction force of the previous negative half cycle is superposed) will cross the peak position, and its negative half cycle (the reaction force of the positive half cycle is superposed) will cross the valley position; the total effect is as follows: the waveform of the sound is the shape of the audio waveform after the amplitude is elongated, the original waveform of the audio is damaged, and the sound is inevitably lost; when the sound wave amplitude is not true, the vibration peak value of the disk body is floated and transferred to the outer side spaces at two sides of the disk body, so that the force point of the disk surface for pushing air is virtually diffused, the sound pressure is inevitably reduced, the sound starting point is in the outer side spaces at two sides of the disk body, the auditory sense is easily misled, the disk body is caused to separate the sound at two sides, and a plurality of sounds always can not come out from the loudspeaker; the disc edge effect of the moving coil loudspeaker makes the restored sound be infirm and the sound pressure is poor, so that the auditory error of the disc body isolation is caused; currently, no speaker product exists that truly eliminates the disc edge effect. Secondly, the frequency response resonance characteristic of the loudspeaker material has objective limitation, and no single real loudspeaker with good full frequency response exists at present. And the force effect and the electric effect simultaneously consume the power of the audio wave crest in the electro-acoustic conversion process, reduce the strong and weak change of the sound, and cause the effects of too small weak sound or invisible sound and too large strong sound or conflict, particularly the change process of the sound is seriously reduced.

Disclosure of Invention

In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides a full normal phase speaker of trigeminy, includes the T type base of constituteing by chassis, chassis post, the one end outside that the chassis post is close to the chassis is equipped with the permanent magnet, be equipped with audio excitation coil outside the permanent magnet, the one end that the chassis post was kept away from the chassis stretches into the speaker support in, its outside is equipped with audio vibration coil, vibration audio vibration coil is equipped with the magnetic conduction china outward, and its outside of the one end of base is kept away from to the speaker support is equipped with the paper disc, the paper disc center is equipped with the dust cover that corresponds with the speaker support, the dust cover inboard is equipped with the piezoceramics trembler, its inside centering bullet wave plate of connecting speaker support, paper disc inner wall that is.

As an improvement, the power-regulating frequency divider accessory comprises a frequency-regulating electrodeless capacitor and a power-regulating resistor, the audio exciting coil is connected with the audio vibration coil in series, the power-regulating resistor is connected to two ends of the audio exciting coil, and the frequency-regulating electrodeless capacitor is connected with the piezoelectric ceramic vibrating reed in series and connected to two ends of the audio exciting coil and two ends of the audio vibration coil.

As an improvement, the permanent magnet, the audio exciting coil, the audio vibration coil and the magnetic-conduction Wheats are all of annular structures.

As an improvement, the end part of the outer edge of the paper disc is provided with a folded edge which is bent inwards.

As an improvement, the piezoelectric ceramic vibrating piece is a double-sided piezoelectric ceramic vibrating piece.

As an improvement, the dust cover is a spherical dust cover.

As an improvement, the static N/S polarity of the direct current of the audio exciting coil is consistent with the N/S polarity of the permanent magnet to achieve static homopolar superposition, the wire diameter of the audio exciting coil is 200% -1000% of that of the audio vibration coil, and the resistance value of the audio exciting coil is 25% -50% of that of the audio vibration coil.

As an improvement, the ceramic cement resistor with the power adjusting resistance of 5W-10W has the same resistance value as the audio exciting coil.

As an improvement, the electroacoustic power value of the piezoelectric ceramic vibrating plate is 30% -50% of the electroacoustic power of the audio vibration coil.

After adopting the structure, the invention has the following advantages: 1. the audio excitation for the triple full-frequency normal-phase speaker provided by the invention collapses the disc edge effect of the speaker structure, corrects the sound wave amplitude deformation in real time, restores the correct sound waveform, realizes the original sound restoration, and overcomes the errors of cone blocking sound and phase inversion disorder.

2. The triple full-frequency normal-phase loudspeaker enhances the sound pressure of the audio crest force effect on the disc surface and highlights the sound head of the sound through the same-phase force effect of the audio excitation and the moving coil audio, thereby expanding the change amplitude of the intensity of the sound, obviously restoring the contents of the sound head, the sound intensity, the sound length, the material of a sound production object, the sound production state and the like, and the sound has rich and real lingering charm, and is particularly suitable for restoring the sound artistic characteristics.

3. The triple full-frequency normal-phase loudspeaker improves the force effect of the loudspeaker by audio excitation, greatly reduces the power ratio of the electric effect, improves the electroacoustic reduction efficiency, corrects the excessive sound intensity, is more suitable for the auditory tolerance of people, and can avoid the trouble of sound noise between neighbors.

4. The triple full-frequency normal-phase loudspeaker is formed by coaxially and serially connecting multiple materials, moving coils and pressure vibration double vibrations, so that a single loudspeaker assembly is well suitable for full-frequency response and simplified loudspeaker box manufacturing materials.

Drawings

Fig. 1 is a schematic structural diagram of a triple full-frequency normal-phase speaker according to the present invention.

Fig. 2 is a schematic diagram of a power-adjusting frequency-dividing circuit of a triple full-frequency normal-phase speaker according to the present invention.

As shown in the figure: 1. the loudspeaker comprises a chassis, 2, a chassis column, 3, a permanent magnet, 4, an audio exciting coil, 5, a loudspeaker support, 6, an audio vibrating coil, 7, a magnetic conduction Huasi, 8, a paper disc, 9, a dust cover, 10, a piezoelectric ceramic vibrating reed, 11, a piezoelectric ceramic vibrating reed, 12, a power-adjusting frequency divider accessory, 13, a folded edge, R, a power-adjusting resistor, U, a frequency-dividing electrodeless capacitor, Y, a piezoelectric ceramic vibrating reed, L1, an audio exciting coil, L2 and an audio vibrating coil.

Detailed Description

Combine the attached drawing, a full normal phase speaker of trigeminy, include the T type base of compriseing chassis 1, chassis post 2, its outside of chassis post 2 one end that is close to chassis 1 is equipped with permanent magnet 3, permanent magnet 3 is equipped with audio excitation coil 4 outward, chassis post 2 is kept away from in chassis 1's one end stretches into speaker support 5, and its outside is equipped with audio vibration coil 6, vibration audio vibration coil 6 is equipped with magnetic conduction huas 7 outward, speaker support 5 keeps away from base 1's one end its outside and is equipped with paper disc 8, paper disc 8 center is equipped with the dust cover 9 that corresponds with speaker support 5, the dust cover 9 inboard is equipped with piezoceramics trembler 10, its inside piezoceramics trembler 11 of connecting speaker support 5, the 8 inner walls of paper disc 11 that is equipped with of one end that paper disc 8 is close to magnetic conduction hua.

As a preferred embodiment of this embodiment, the power-adjusting frequency divider accessory 12 is further included, the power-adjusting frequency divider accessory 12 includes a frequency-dividing electrodeless capacitor and a power-adjusting resistor, the audio exciting coil 4 is connected in series with the audio vibration coil 6, the power-adjusting resistor is connected to two ends of the audio exciting coil 4, and the frequency-dividing electrodeless capacitor is connected in series with the piezoelectric ceramic vibration piece 10 and is connected to two ends of the audio exciting coil 4 and the audio vibration coil 6.

In the preferred embodiment of the present embodiment, the permanent magnet 3, the audio exciting coil 4, the audio vibrating coil 6, and the magnetic conductive washer 7 are all in a ring structure.

As a preferred embodiment of this embodiment, the outer edge end of the paper tray 8 is provided with a folded edge 13 which is bent inwards.

As a preferred embodiment of this embodiment, the piezoelectric ceramic vibrating piece 10 is a double-sided piezoelectric ceramic vibrating piece.

As a preferred embodiment of the present embodiment, the dust cover 9 is a spherical dust cover.

As a preferred embodiment of this embodiment, the N/S polarity of the direct current static state of the audio exciting coil and the N/S polarity of the permanent magnet are consistent to achieve static homopolar superposition, the wire diameter of the audio exciting coil is 200% to 1000% of the wire diameter of the audio vibration coil, and the resistance value of the audio exciting coil is 25% to 50% of the resistance value of the audio vibration coil.

As a preferred embodiment of the embodiment, the ceramic cement resistor with the power adjusting resistance of 5W-10W has a resistance value equal to that of the audio exciting coil.

In a preferred embodiment of this embodiment, the value of the electric sound power of the piezoelectric ceramic vibrating reed is 30% to 50% of the electric sound power of the audio vibrating coil.

In the specific implementation of the invention, 1, the dynamic and static double-magnet combination is realized, and the permanent magnet and the magnet exciting coil are as follows:

the exciting coil is connected in series with the audio vibration coil according to a ratio of 1: 2, power is distributed in proportion, and the audio excitation and the solid permanent magnet are guided by the same set of magnetic permeability Wheats, so that the effective magnetic field changes along with the audio: the positive half cycle of each audio frequency enhances the magnetic force, and the negative half cycle weakens the magnetic force; because the magnetic force change of the audio excitation coil is synchronous with the audio change of the audio vibration coil, namely, the wave crest to the wave crest, the wave trough to the wave trough, the force effect of the audio vibration coil makes the paper disc vibrate, the paper disc vibrates by taking the middle (the thickness center) of the paper disc as an original point, the first audio positive half cycle (the thrust is enhanced due to the enhancement of the magnetic force, and the dragged force effect is counteracted) can be extended to the peak position, and the negative half cycle (the thrust is weakened due to the weakening of the magnetic force, and the reaction force of the dragged positive half cycle which is superposed once is counteracted) can not exceed the wave trough position; the second audio positive half cycle (the reaction force of the previous negative half cycle is counteracted by excitation, the reaction force which involves the positive half cycle is counteracted by increasing the thrust due to the increase of the magnetic force) can extend to the position of the wave crest, and the negative half cycle (the reaction force which involves the positive half cycle and is superposed once is counteracted by decreasing the magnetic force) can not cross the position of the wave trough; the overall effect is therefore: the waveform of the sound is controlled within the original peak and trough position interval of the audio, the original waveform of the audio power is accurately restored, and the sound is real; the vibration peak value of the paper disc is arranged in the two side surfaces of the disc body, so that the force point of the paper disc for pushing air is concentrated on the disc surface, the sound pressure is natural and firm, and the sound starting point is arranged on the disc surface, so that the auditory sense of sound surge is easily triggered; therefore, the invention practically breaks down the disc edge effect of the loudspeaker through the dynamic control of audio excitation, restores the real sound waveform and ensures the real dynamics of the sound; the effect of converting audio current into sound is improved by the participation of audio excitation in the electromagnetic force effect.

2. The piezoelectric double-vibration combination of the moving coil is realized, and the audio vibration coil and the double-sided piezoelectric ceramic vibrating piece form a moving coil and a pressure vibration double-vibration sounding mode: the piezoelectric ceramic vibrating reed is mounted in a spherical dust cover in a pressing mode, the high-pitched voice coaxial and in-phase series connection and superposition of the voice frequency exciting coil is blocked on the disc surface of the disc body, the bad characteristics of elastic waves, folded edges and cone paper materials to high-frequency resonance are overcome, and the fullness and trueness of high-frequency, medium-frequency, low-frequency and full-frequency response of the vibrating disc surface are guaranteed.

3. The power regulation and frequency division combination is realized, and the power regulation frequency divider is composed of the excitation coil, the power regulation shunt resistor and the frequency division electrodeless capacitor:

the frequency division electrodeless capacitor and the audio excitation coil form a high-frequency, second-highest, middle-low-frequency two-frequency-band shunt, wherein the audio excitation coil outputs full frequency to the audio vibration coil, and the frequency division electrodeless capacitor outputs high-frequency power blocked by the excitation coil to the double-sided piezoelectric ceramic vibrating piece; the power regulating shunt resistance value is equal to the resistance value of the magnet exciting coil, the magnet exciting coil and the power regulating resistor are connected in parallel, and then the whole body is connected with the audio vibration coil in series; by adjusting power and dividing frequency, the loudspeaker has great breakthrough in excellent working conditions under large, medium and small power input.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a full normal phase speaker of trigeminy, its characterized in that includes the T type base of constituteing by chassis, chassis post, the one end outside that the chassis post is close to the chassis is equipped with the permanent magnet, the permanent magnet is equipped with audio excitation coil outward, the one end that the chassis post was kept away from the chassis is stretched into in the speaker support, and its outside is equipped with audio vibration coil, vibration audio vibration coil is equipped with the magnetic conduction china outward, and its outside of the one end of base is kept away from to the speaker support is equipped with the paper disc, the paper disc center is equipped with the dust cover that corresponds with the speaker support, the dust cover inboard is equipped with the piezoceramics trembler, its inside centering bullet wave plate that is equipped with connection speaker support, paper.

2. The triple full-frequency normal-phase speaker according to claim 1, further comprising a power-adjusting divider attachment, wherein the power-adjusting divider attachment comprises a frequency-dividing electrodeless capacitor and a power-adjusting resistor, the audio exciting coil is connected in series with the audio vibration coil, the power-adjusting resistor is connected to two ends of the audio exciting coil, and the frequency-dividing electrodeless capacitor is connected in series with the piezoelectric ceramic vibration piece and is connected to two ends of the audio exciting coil and the audio vibration coil.

3. The triple full-frequency normal-phase speaker according to claim 1, wherein the permanent magnet, the audio exciting coil, the audio vibrating coil and the magnetic conductive wales are all in a ring structure.

4. The triple full-frequency normal phase speaker as claimed in claim 1, wherein the outer edge of the paper plate is provided with a folded edge bent inwards.

5. The triple full-band normal-phase speaker as claimed in claim 1, wherein the piezoelectric ceramic vibrating reed is a double-sided piezoelectric ceramic vibrating reed.

6. The triple full-band normal phase speaker as claimed in claim 1, wherein the dust cover is a spherical dust cover.

7. The triple full-frequency normal phase speaker as claimed in claim 1, wherein the static N/S polarity of the dc current of the audio exciting coil is consistent with the N/S polarity of the permanent magnet to achieve static homopolar superposition, the wire diameter of the audio exciting coil is 200-1000% of the wire diameter of the audio vibration coil, and the resistance value of the audio exciting coil is 25-50% of the resistance value of the audio vibration coil.

8. The triple full-frequency normal phase speaker as claimed in claim 1, wherein the power adjusting resistor is a ceramic cement resistor of 5W-10W, and the resistance value is equal to the resistance value of the audio exciting coil.

9. The triple full-band normal-phase speaker as claimed in claim 1, wherein the value of the electric power of the piezoelectric ceramic vibrating reed is 30% -50% of the electric power of the audio vibrating coil.