CN114143658B - Double-resonance earphone vibration piece unit and earphone with the structure - Google Patents

Abstract

The present invention relates to the field of vibration technology of vibration plates, and in particular to a dual-harmonic earphone vibration plate unit and an earphone having such a structure, comprising a main vibration module, a field control module, and a transformer module, wherein the main vibration module, the field control module, and the transformer module are all installed inside an integrated shell, the main vibration module is installed between the field control modules and connected to an external positive terminal through a wire, the two ends of the field control module are respectively connected to the two ends of the transformer module, the input end of the transformer module is connected to an audio input signal, and a dual-harmonic module is installed on one side of the main vibration module. Compared with existing vibration plates, this vibration plate unit can have a better vibration amplitude, and the dual-harmonic dual-harmonic module is used to enhance the vibration plate edge amplitude, thereby improving the vibration effect of the vibration plate unit as a whole, being able to better expand the sound range of the vibration plate when in use, and improving the performance of the vibration plate, thereby achieving the purpose of improving the sound transmission effect of the earphone.

Description

Double-resonance earphone vibration plate unit and earphone with the structure

Technical Field

The present invention relates to the field of vibration technology of diaphragms, and in particular to a new diaphragm technology and a new headphone structure capable of improving the vibration effect and amplitude of a headphone diaphragm, in particular a dual-harmonic headphone diaphragm unit and a headphone having the structure.

Background technique

As we all know, the function of headphones is to receive the electrical signals sent by the media player or receiver, and convert them into audible sound waves using the speakers close to the ears. From the industry's perspective, mobile phone headphones are divided into two standards: the OMTP standard is usually called the national standard, and the CTIA is called the international standard. Different standards also have different requirements for headphone production.

From the perspective of different classification criteria, headphones can be divided into many different categories. For example, headphones are classified according to their transducer methods, mainly including: dynamic coil, moving iron, electrostatic and isomagnetic. From the structural and functional methods, they can be classified into semi-open and closed types. From the wearing form, they are classified into earplug type, ear-hanging type, in-ear type and head-mounted type; from the number of people wearing them, they are classified into single-person headphones and multi-person headphones. From the sound source, they can be divided into active headphones and passive headphones; active headphones are often called card-inserted headphones. Regardless of the type of wired headphones, their structural composition and working principle are very similar to those of speakers, and they are also composed of two parts: a magnetic circuit system and a sound system. For example, traditional headphones are mainly composed of four parts: a headband, left and right sound units, earmuffs and leads.

Among them, the function of the headband is to fix the left and right sound units and place them on both sides of the head. Its structure and the way it is connected to the unit determine the pressure of the headband and earmuffs on the head, affecting the comfort of wearing the headphones. The earmuffs are the parts where the head contacts the sound unit. They are crucial for dynamic headphones. Their function is to reflect low frequencies back to ensure low-frequency playback. The lead of the headphone is the connection line between the output end of the headphone amplifier circuit and the headphone voice coil. The sound unit of the headphone is the core and most important part of the entire headphone, which mainly includes acoustic structures such as the magnetic circuit system, vibration system, cavity and hole.

The reason why the sound unit of the earphone can make different sounds is that its working principle is similar to that of the speaker. The website with the following URL: https://www.sohu.com/a/216178295_121611 records the sound principle of the dynamic unit type. The specific principle is shown in Figure 1. A coil is attached to the diaphragm of the dynamic unit. The changing current passes through the coil to generate an electric field, which acts on the permanent magnet below, thereby causing the diaphragm to vibrate and make sound.

It can be seen from the above-mentioned prior art that the key structure of the earphone for sound generation is the diaphragm structure. When the traditional earphone is working, its diaphragm unit (also called the diaphragm unit, named according to the different types of vibrating diaphragm structures) is limited by the diaphragm structure, so that the vibration area of the diaphragm is only maintained in the middle area. This greatly limits the vibration range of the entire diaphragm structure. When used in some occasions with high fidelity requirements, the bass and treble of the earphone are usually not accurately expressed, which affects the sound effect of the earphone.

For example, in the patent document of our company's prior application with patent application number CN202010660144.5, a patent name is disclosed: earphone vibration component and the structure of a vibration earphone with the vibration component, whose main structure includes a sound transmission shell with a mesh on the surface, a sound membrane component is fixedly provided in the middle of the shell inner cavity of the sound transmission shell with a mesh on the surface, and a pole plate component symmetrically arranged about the center plane of the shell inner cavity is respectively arranged in the shell inner cavity on both sides of the sound membrane component, and the spacing distance between the two pole plate assemblies is adjustable, and the two pole plate assemblies are respectively connected to a step-up transformer equivalent circuit through wires, and the input end of the step-up transformer equivalent circuit is connected to the external audio input signal, and the sound membrane component is connected to the external high voltage through a wire, and a high voltage is formed between the sound membrane component and the output end of the step-up transformer equivalent circuit.

It can be seen from its disclosed content that the above-mentioned prior patent application mainly obtains more realistic sound reproduction through an adjustable vibration component. This method can improve the problem of limited vibration of the diaphragm to a certain extent, but in terms of overall effect, it cannot achieve the actual effect of changing the vibration of the edge of the diaphragm. Therefore, it has limitations in terms of the effect of enhancing the amplitude and vibration breadth of the diaphragm.

To this end, the present application studies the problem of headphone sound distortion caused by insufficient vibration of the diaphragm or vibrator in the prior art, and develops and designs a dual-harmonic headphone vibrator unit to better ensure the sound effect and better solve the problems existing in the prior art.

Summary of the invention

The present invention solves one of the above technical problems, and the technical solution adopted is: a dual-harmonic headphone vibration unit, including a main vibration module, a field control module, and a transformer module. The main vibration module, the field control module, and the transformer module are all installed inside an integrated shell. The main vibration module is installed between the field control modules and connected to the external positive terminal through a wire. The two ends of the field control module are respectively connected to the two ends of the transformer module. The input end of the transformer module is connected to an audio input signal. A dual-harmonic module is installed on one side of the main vibration module. The dual-harmonic module cooperates with the main vibration module to resonate and increase the vibration amplitude of the edge.

In any of the above schemes, it is preferred that the field control module includes two thin plates fixedly installed in the installation cavity of the integrated shell, and both ends of the two thin plates are hinged on the inner wall of the installation cavity. A mid-domain field force adjustment device is respectively provided on the outer side of the middle part of each thin plate. The two mid-domain field force adjustment devices are respectively used to realize the regulation of the middle distance between the two thin plates. The two thin plates are respectively connected to the two ends of the transformer module through wires, and there is a spacing space between the two thin plates and the main vibration module.

In any of the above schemes, it is preferred that the mid-domain field force regulating device includes an insulating screw screwed into a screw hole on the inner wall at a corresponding position of the mounting cavity, a pressing ball portion is installed at the inner end of the insulating screw, and the outer end of the insulating screw is screwed through the integrated shell, and the pressing ball portion presses the middle part of the outer side of the thin plate at the corresponding position to cause the middle part of the thin plate to bulge inward and deform.

In any of the above schemes, preferably, a precision external thread is provided on the outer side wall of the inner section of the insulating screw, and the outer section of the insulating screw has a larger diameter than the inner section.

In any of the above solutions, preferably, the transformer module adopts a step-up transformer equivalent circuit structure.

In any of the above schemes, preferably, the main vibration module includes a main vibration plate installed in a mounting cavity between the two thin electrode plates, and both ends of the main vibration plate are fixedly mounted on the inner wall corresponding to the mounting cavity.

In any of the above schemes, it is preferred that the dual-resonance module includes two resonant diaphragms fixedly mounted on both sides of the middle of the corresponding main oscillator, the roots of the two resonant diaphragms are spaced apart, the inner end of the resonant diaphragm is fixed on the main oscillator, the outer end of the resonant diaphragm is freely suspended, and the middle section and outer end of the resonant diaphragm are arranged parallel to the main oscillator.

The present invention also provides an earphone with a dual-harmonic headphone vibration plate unit, comprising two dual-harmonic headphone vibration plate units, both of which adopt the dual-harmonic headphone vibration plate unit as mentioned above, each of which is installed inside a corresponding earphone shell, the input end of the transformer module of the dual-harmonic headphone vibration plate unit is connected to an external audio input signal through an earphone plug on an earphone cable, a volume control key is integrated on the earphone cable, and the two earphone shells are connected through a head-mounted ear band.

Compared with the prior art, the beneficial effects of the present invention are as follows:

1. Compared with the existing diaphragms, this diaphragm unit can have a better vibration amplitude. The dual-harmonic module is used to enhance the edge amplitude of the diaphragm, which improves the vibration effect of the diaphragm unit as a whole, can better expand the sound range of the diaphragm when used, improve the performance of the diaphragm, and thus achieve the purpose of improving the sound transmission effect of the earphone.

2. The main vibration plate of the entire main vibration module and the resonant diaphragm of the dual-resonance module are made of one-piece material, which effectively ensures the consistency of the vibration plate material and the consistency of its amplitude feedback when subjected to force. At the same time, the one-piece molding ensures that the entire vibration plate has no mechanical connection or welding parts caused by texture changes, and the overall vibration sound effect is better.

3. The mid-field force regulating device can control the change of the central electric field as needed, so as to achieve the purpose of balancing the edge electric field, better reduce the force difference between the resonant diaphragm and the main oscillator, and improve the overall resonance effect.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn according to the actual scale.

FIG. 1 is a schematic diagram of the sound generation principle of a conventional headphone dynamic unit type.

FIG. 2 is a schematic diagram of the internal cross-sectional structure of the first embodiment of the present invention.

FIG. 3 is a schematic diagram of the internal cross-sectional structure of the second embodiment of the present invention.

FIG. 4 is a schematic diagram of the internal cross-sectional structure of the third and fourth embodiments of the present invention.

FIG. 5 is a schematic structural diagram of the earphone of the present invention.

In the figure, 1. integrated shell; 2. mounting cavity; 3. thin electrode plate; 4. insulating screw; 5. pressing ball; 6. main oscillator; 601. convex curved surface structure; 7. resonant diaphragm; 8. headphone plug; 9. volume control button; 10. headphone shell; 11. headband; 12. headphone cable; 13. step-up transformer equivalent circuit; A. dual-resonance headphone oscillator unit.

Detailed ways

The following is a detailed description of the embodiments of the technical solution of the present invention in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present invention. The specific structure of the present invention is shown in Figures 1-5.

Embodiment 1: As shown in Figures 2 and 5:

The dual-harmonic headphone vibration unit includes a main vibration module, a field control module, and a transformer module. The main vibration module, the field control module, and the transformer module are all installed inside an integrated shell 1. The main vibration module is installed between the field control modules and connected to the external positive terminal through a wire. The two ends of the field control module are respectively connected to the two ends of the transformer module. The input end of the transformer module is connected to an audio input signal. A dual-harmonic module is installed on one side of the main vibration module. The dual-harmonic module cooperates with the main vibration module to resonate and increase the vibration amplitude of the edge.

The core part of the entire dual-harmonic headphone vibration unit A adopts the main vibration module configured with the dual-harmonic module to ensure the vibration frequency and amplitude in the middle, while making better use of the dual-harmonic module to increase the amplitude at the edge, thereby effectively expanding the breadth of sound, improving the subsequent sound transmission effect of the entire vibration unit, and ensuring the sound restoration of the headphone.

In any of the above schemes, it is preferred that the field control module includes two spaced-apart thin plates 3 fixedly installed in the installation cavity 2 of the integrated shell 1, both ends of the two thin plates 3 are hinged on the inner wall of the installation cavity 2, and a mid-domain field force regulating device is respectively provided on the outer side of the middle part of each thin plate 3, and the two mid-domain field force regulating devices are respectively used to realize the regulation of the middle distance between the two thin plates 3, and the two thin plates 3 are respectively connected to the two ends of the transformer module through wires, and there is a spacing space between the two thin plates 3 and the main vibration module.

After the field control module is installed, it can be connected to an external audio device and the voltage can be added by using the step-up transformer structure of the transformer module, so that an electric field is formed between the two thin plates 3, and finally the main vibration module and the dual-resonance module are subjected to the electric field force to achieve the purpose of vibration. The specific principle is: the audio model is amplified and connected to the fixed thin plate 3, and the changing audio signal will generate a changing electric field between the two thin plates 3. The main vibration plate 6 and the resonant diaphragm 7 of the earphone are between the two thin plates 3, and an extremely high voltage is externally connected. In the changing electric field generated by the audio signal, the charges on each vibration plate are subjected to force, so that the diaphragm vibrates at a frequency to form a sound.

In any of the above schemes, it is preferred that the mid-domain field force regulating device includes an insulating screw 4 screwed into a screw hole on the inner wall at a corresponding position of the mounting cavity 2, and a pressing ball 5 is installed at the inner end of the insulating screw 4. The outer end of the insulating screw 4 is screwed through the integrated shell 1, and the pressing ball 5 presses the middle part of the outer side of the thin plate 3 at the corresponding position to cause the middle part of the thin plate 3 to bulge inward and deform.

By setting up the mid-field force adjustment device, the degree of tightness against the middle part of the outer side of the thin electrode 3 can be controlled, so as to realize the change of the distance between the middle parts of the outer sides of the two thin electrodes 3, thereby achieving the effect of adjusting the electric field force in the middle, and then realizing the adjustment of the vibration amplitude of the main oscillator 6 in the middle, thereby realizing the regulation of different audio input effects, improving the restoration degree of the entire main oscillator 6 to the audio signal, and at the same time, the difference in vibration frequency between the main oscillator 6 and the resonance diaphragm 7 can be adjusted.

In any of the above solutions, it is preferred that the voltage transformation module adopts a step-up transformer equivalent circuit 13.

The step-up transformer structure can better amplify the audio input signal.

In any of the above solutions, preferably, the main vibration module includes a main vibration plate 6 installed in the installation cavity 2 between the two thin electrode plates 3, and both ends of the main vibration plate 6 are fixedly installed on the corresponding inner wall of the installation cavity 2.

In any of the above schemes, it is preferred that the dual-resonance module includes two resonant diaphragms 7 fixedly mounted on both sides of the middle of the corresponding main oscillator 6, the roots of the two resonant diaphragms 7 are spaced apart, the inner end of the resonant diaphragm 7 is fixed on the main oscillator 6, the outer end of the resonant diaphragm 7 is freely suspended, and the middle section and the outer end of the resonant diaphragm 7 are both arranged parallel to the main oscillator 6.

The main purpose of suspending the outer ends of the two resonant diaphragms 7 and connecting the inner ends to the main oscillator 6 is that when the middle part of the main oscillator 6 is affected by the electric charge force, the entire main oscillator 6 will be driven to vibrate, among which the vibration amplitude of the middle part is the largest. At this time, relying on the vibration of the middle part, the resonant diaphragm 7 connected to the root will vibrate at the vibration frequency and amplitude of the middle connection part. At the same time, the suspended end of the resonant diaphragm 7 will also be affected by the electric charge force to vibrate, thereby achieving the effect of increasing the vibration amplitude of the edge part, while ensuring the vibration amplitude of the middle position. Therefore, when receiving the audio signal, the purpose of the middle and edge parts vibrating with a larger amplitude at the same time can be achieved, thereby broadening the restoration degree of the entire oscillator structure to the audio signal within a larger sound range, thereby improving the sound quality and sound effect restoration degree of the headphones.

The present invention also provides an earphone with a dual-harmonic earphone vibration plate unit, including two dual-harmonic earphone vibration plate units, the two dual-harmonic earphone vibration plate units A both adopt the dual-harmonic earphone vibration plate unit as described above, each dual-harmonic earphone vibration plate unit A is installed inside the corresponding earphone shell 10, the input end of the transformer module of the dual-harmonic earphone vibration plate unit A is connected to the external audio input signal through the earphone plug 8 on the earphone line 12, the earphone line 12 is integrated with a volume control button 9, and the two earphone shells 10 are connected through a head-mounted earband 11. The entire earphone is equipped with two dual-harmonic earphone vibration plate units, and the earphone adopts a head-mounted structure, which can ensure the comfort of wearing, and at the same time, the purpose of controlling the volume is achieved through the volume control button 9 on the earphone line 12; in addition, according to different usage scenarios, the thin plate 3 can be adjusted by pre-adjusting each insulating screw 4, thereby adjusting the earphone sound effect.

Second embodiment: as shown in Figures 3 and 5:

The dual-harmonic headphone vibration unit includes a main vibration module, a field control module, and a transformer module. The main vibration module, the field control module, and the transformer module are all installed inside an integrated shell 1. The main vibration module is installed between the field control modules and connected to the external positive terminal through a wire. The two ends of the field control module are respectively connected to the two ends of the transformer module. The input end of the transformer module is connected to an audio input signal. A dual-harmonic module is installed on one side of the main vibration module. The dual-harmonic module cooperates with the main vibration module to resonate and increase the vibration amplitude of the edge.

The core part of the entire dual-harmonic headphone vibration unit A adopts the main vibration module configured with the dual-harmonic module to ensure the vibration frequency and amplitude in the middle, while making better use of the dual-harmonic module to increase the amplitude at the edge, thereby effectively expanding the breadth of sound, improving the subsequent sound transmission effect of the entire vibration unit, and ensuring the sound restoration of the headphone.

In any of the above schemes, it is preferred that the field control module includes two spaced-apart thin plates 3 fixedly installed in the installation cavity 2 of the integrated shell 1, both ends of the two thin plates 3 are hinged on the inner wall of the installation cavity 2, and a mid-domain field force regulating device is respectively provided on the outer side of the middle part of each thin plate 3, and the two mid-domain field force regulating devices are respectively used to realize the regulation of the middle distance between the two thin plates 3, and the two thin plates 3 are respectively connected to the two ends of the transformer module through wires, and there is a spacing space between the two thin plates 3 and the main vibration module.

After the field control module is installed, it can be connected to an external audio device and the voltage can be added by using the step-up transformer structure of the transformer module, so that an electric field is formed between the two thin plates 3, and finally the main vibration module and the dual-resonance module are subjected to the electric field force to achieve the purpose of vibration. The specific principle is: the audio model is amplified and connected to the fixed thin plate 3, and the changing audio signal will generate a changing electric field between the two thin plates 3. The main vibration plate 6 and the resonant diaphragm 7 of the earphone are between the two thin plates 3, and an extremely high voltage is externally connected. In the changing electric field generated by the audio signal, the charges on each vibration plate are subjected to force, so that the diaphragm swings and forms sound.

In any of the above schemes, it is preferred that the mid-domain field force regulating device includes an insulating screw 4 screwed into a screw hole on the inner wall at a corresponding position of the mounting cavity 2, and a pressing ball 5 is installed at the inner end of the insulating screw 4. The outer end of the insulating screw 4 is screwed through the integrated shell 1, and the pressing ball 5 presses the middle part of the outer side of the thin plate 3 at the corresponding position to cause the middle part of the thin plate 3 to bulge inward and deform.

By setting up the mid-field force adjustment device, the degree of tightness against the middle part of the outer side of the thin electrode 3 can be controlled, so as to realize the change of the distance between the middle parts of the outer sides of the two thin electrodes 3, thereby achieving the effect of adjusting the electric field force in the middle, and then realizing the adjustment of the vibration amplitude of the main oscillator 6 in the middle, thereby realizing the regulation of different audio input effects, improving the restoration degree of the entire main oscillator 6 to the audio signal, and at the same time, the difference in vibration frequency between the main oscillator 6 and the resonance diaphragm 7 can be adjusted.

In any of the above schemes, preferably, a precision external thread is provided on the outer side wall of the inner section of the insulating screw rod 4, and the outer section rod diameter of the insulating screw rod 4 is larger than the inner section rod diameter.

Precision external thread adjustment can ensure the amplitude control of adjustment and ensure more precise adjustment.

In any of the above solutions, it is preferred that the voltage transformation module adopts a step-up transformer equivalent circuit 13.

The step-up transformer structure can better amplify the audio input signal.

In any of the above solutions, preferably, the main vibration module includes a main vibration plate 6 installed in the installation cavity 2 between the two thin electrode plates 3, and both ends of the main vibration plate 6 are fixedly installed on the corresponding inner wall of the installation cavity 2.

In any of the above schemes, it is preferred that the dual-resonance module includes two resonant diaphragms 7 fixedly mounted on both sides of the middle of the corresponding main oscillator 6, the roots of the two resonant diaphragms 7 are spaced apart, the inner end of the resonant diaphragm 7 is fixed on the main oscillator 6, the outer end of the resonant diaphragm 7 is freely suspended, and the middle section and the outer end of the resonant diaphragm 7 are both arranged parallel to the main oscillator 6.

The main purpose of suspending the outer ends of the two resonant diaphragms 7 and connecting the inner ends to the main oscillator 6 is that when the middle part of the main oscillator 6 is affected by the electric charge force, the entire main oscillator 6 will be driven to vibrate, among which the vibration amplitude of the middle part is the largest. At this time, relying on the vibration of the middle part, the resonant diaphragm 7 connected to the root will vibrate at the vibration frequency and amplitude of the middle connection part. At the same time, the suspended end of the resonant diaphragm 7 will also be affected by the electric charge force to vibrate, thereby achieving the effect of increasing the vibration amplitude of the edge part, while ensuring the vibration amplitude of the middle position. Therefore, when receiving the audio signal, the purpose of simultaneously vibrating the middle and edge parts with a large amplitude can be achieved, thereby broadening the restoration degree of the entire oscillator structure to the audio signal within a larger sound range, thereby improving the sound quality and sound effect restoration degree of the headphones.

In any of the above solutions, preferably, the inner end of the resonant diaphragm 7 is integrally connected to the main oscillating plate 6 , and the resonant diaphragm 7 is a diaphragm structure formed by being stamped out from the main oscillating plate 6 and then bent.

The resonant diaphragm 7 and the main vibration plate 6 are made of synchronous plates, which can avoid mechanical connection, ensure the uniformity of the material of the entire vibration plate, and maintain the relative consistency of the vibration effect.

In any of the above solutions, preferably, the thickness of the main vibration plate 6 is 0.5-1 mm.

In any of the above solutions, it is preferred that the bending section of the resonant diaphragm 7 is a semicircular structure, which can ensure that it has both toughness and compressive strength, can bend after being subjected to force, and can quickly reset after the force disappears.

In any of the above solutions, preferably, the spacing distance between the outer side of the main oscillator 6 and the horizontal section of the resonance diaphragm 7 is 5-8 mm.

The present invention also provides an earphone with a dual-harmonic earphone vibration plate unit, including two dual-harmonic earphone vibration plate units, the two dual-harmonic earphone vibration plate units A both adopt the dual-harmonic earphone vibration plate unit as described above, each dual-harmonic earphone vibration plate unit A is installed inside the corresponding earphone shell 10, the input end of the transformer module of the dual-harmonic earphone vibration plate unit A is connected to the external audio input signal through the earphone plug 8 on the earphone line 12, the earphone line 12 is integrated with a volume control button 9, and the two earphone shells 10 are connected through a head-mounted earband 11. The entire earphone is equipped with two dual-harmonic earphone vibration plate units, and the earphone adopts a head-mounted structure, which can ensure the comfort of wearing, and at the same time, the purpose of controlling the volume is achieved through the volume control button 9 on the earphone line 12; in addition, according to different usage scenarios, the thin plate 3 can be adjusted by adjusting each insulating screw 4, thereby adjusting the sound effect restoration of the earphone.

Embodiment 3: As shown in Figures 4 and 5:

Compared with the second embodiment, the improvement is:

In any of the above solutions, preferably, convex curved surface structures 601 are provided on both sides of the middle of the main oscillator 6 .

The purpose of providing the convex curved surface here is to increase the weight of the middle part, thereby increasing the inertial vibration brought about by the vibration of the middle part of the main vibration plate 6, and ensuring the enhancement effect of the vibrato and heavy bass in the audio signal.

In any of the above schemes, preferably, the inner end of the resonant diaphragm 7 is integrally connected to the main oscillator 6 at the edge of the convex curved surface structure 601, and the resonant diaphragm 7 is a diaphragm structure formed by punching out the main oscillator 6 and then bending it.

The resonant diaphragm 7 and the main vibration plate 6 are made of synchronous plates, which can avoid mechanical connection, ensure the uniformity of the material of the entire vibration plate, and maintain the relative consistency of the vibration effect.

In any of the above solutions, preferably, the distance between the two convex curved surface structures 601 in the middle of the main vibration plate 6 is 1-1.5 mm.

Embodiment 4: As shown in Figures 4 and 5:

The dual-harmonic headphone vibration unit includes a main vibration module, a field control module, and a transformer module. The main vibration module, the field control module, and the transformer module are all installed inside an integrated shell 1. The main vibration module is installed between the field control modules and connected to the external positive terminal through a wire. The two ends of the field control module are respectively connected to the two ends of the transformer module. The input end of the transformer module is connected to an audio input signal. A dual-harmonic module is installed on one side of the main vibration module. The dual-harmonic module cooperates with the main vibration module to resonate and increase the vibration amplitude of the edge.

The core part of the entire dual-harmonic headphone vibration unit A adopts the main vibration module configured with the dual-harmonic module to ensure the vibration frequency and amplitude in the middle, while making better use of the dual-harmonic module to increase the amplitude at the edge, thereby effectively expanding the breadth of sound, improving the subsequent sound transmission effect of the entire vibration unit, and ensuring the sound restoration of the headphone.

In any of the above schemes, it is preferred that the field control module includes two spaced-apart thin plates 3 fixedly installed in the installation cavity 2 of the integrated shell 1, both ends of the two thin plates 3 are hinged on the inner wall of the installation cavity 2, and a mid-domain field force regulating device is respectively provided on the outer side of the middle part of each thin plate 3, and the two mid-domain field force regulating devices are respectively used to realize the regulation of the middle distance between the two thin plates 3, and the two thin plates 3 are respectively connected to the two ends of the transformer module through wires, and there is a spacing space between the two thin plates 3 and the main vibration module.

After the field control module is installed, it can be connected to an external audio device and the voltage can be added by using the step-up transformer structure of the transformer module, so that an electric field is formed between the two thin plates 3, and finally the main vibration module and the dual-resonance module are subjected to the electric field force to achieve the purpose of vibration. The specific principle is: the audio model is amplified and connected to the fixed thin plate 3, and the changing audio signal will generate a changing electric field between the two thin plates 3. The main vibration plate 6 and the resonant diaphragm 7 of the earphone are between the two thin plates 3, and an extremely high voltage is externally connected. In the changing electric field generated by the audio signal, the charges on each vibration plate are subjected to force, so that the diaphragm swings and forms sound.

In any of the above schemes, it is preferred that the mid-domain field force regulating device includes an insulating screw 4 screwed into a screw hole on the inner wall at a corresponding position of the mounting cavity 2, and a pressing ball 5 is installed at the inner end of the insulating screw 4. The outer end of the insulating screw 4 is screwed through the integrated shell 1, and the pressing ball 5 presses the middle part of the outer side of the thin plate 3 at the corresponding position to cause the middle part of the thin plate 3 to bulge inward and deform.

By setting up the mid-field force adjustment device, the degree of tightness against the middle part of the outer side of the thin electrode 3 can be controlled, so as to realize the change of the distance between the middle parts of the outer sides of the two thin electrodes 3, thereby achieving the effect of adjusting the electric field force in the middle, and then realizing the adjustment of the vibration amplitude of the main oscillator 6 in the middle, thereby realizing the regulation of different audio input effects, improving the restoration degree of the entire main oscillator 6 to the audio signal, and at the same time, the difference in vibration frequency between the main oscillator 6 and the resonance diaphragm 7 can be adjusted.

In any of the above schemes, preferably, a precision external thread is provided on the outer side wall of the inner section of the insulating screw rod 4, and the outer section rod diameter of the insulating screw rod 4 is larger than the inner section rod diameter.

Precision external thread adjustment can ensure the amplitude control of adjustment and ensure more precise adjustment.

In any of the above solutions, it is preferred that the voltage transformation module adopts a step-up transformer equivalent circuit 13.

The step-up transformer structure can better amplify the audio input signal.

In any of the above solutions, preferably, the main vibration module includes a main vibration plate 6 installed in the installation cavity 2 between the two thin electrode plates 3, and both ends of the main vibration plate 6 are fixedly installed on the corresponding inner wall of the installation cavity 2.

In any of the above schemes, it is preferred that the dual-resonance module includes two resonant diaphragms 7 fixedly mounted on both sides of the middle of the corresponding main oscillator 6, the roots of the two resonant diaphragms 7 are spaced apart, the inner end of the resonant diaphragm 7 is fixed on the main oscillator 6, the outer end of the resonant diaphragm 7 is freely suspended, and the middle section and the outer end of the resonant diaphragm 7 are both arranged parallel to the main oscillator 6.

The main purpose of suspending the outer ends of the two resonant diaphragms 7 and connecting the inner ends to the main oscillator 6 is that when the middle part of the main oscillator 6 is affected by the electric charge force, the entire main oscillator 6 will be driven to vibrate, among which the vibration amplitude of the middle part is the largest. At this time, relying on the vibration of the middle part, the resonant diaphragm 7 connected to the root will vibrate at the vibration frequency and amplitude of the middle connection part. At the same time, the suspended end of the resonant diaphragm 7 will also be affected by the electric charge force to vibrate, thereby achieving the effect of increasing the vibration amplitude of the edge part, while ensuring the vibration amplitude of the middle position. Therefore, when receiving the audio signal, the purpose of simultaneously vibrating the middle and edge parts with a large amplitude can be achieved, thereby broadening the restoration degree of the entire oscillator structure to the audio signal within a larger sound range, thereby improving the sound quality and sound effect restoration degree of the headphones.

In any of the above solutions, preferably, convex curved surface structures 601 are provided on both sides of the middle of the main oscillator 6 .

The purpose of providing the convex curved surface here is to increase the weight of the middle part, thereby increasing the inertial vibration caused by the vibration of the middle part of the main vibration plate 6, and ensuring the enhancement effect of the vibrato and heavy bass in the audio signal.

In any of the above schemes, preferably, the inner end of the resonant diaphragm 7 is integrally connected to the main oscillator 6 at the edge of the convex curved surface structure 601, and the resonant diaphragm 7 is a diaphragm structure formed by punching out the main oscillator 6 and then bending it.

The resonant diaphragm 7 and the main vibration plate 6 are made of synchronous plates, which can avoid mechanical connection, ensure the uniformity of the material of the entire vibration plate, and maintain the relative consistency of the vibration effect.

Preferably, in any of the above solutions, an insulating coating is coated on the inner side wall of the horizontal section of each of the resonant diaphragms 7 .

In any of the above solutions, preferably, the surface of the curved section of each of the resonant diaphragms 7 is coated with an insulating coating.

The purpose of applying the insulating coating is to isolate the electric charge on the opposite side, thereby isolating the electric field force. The resonant diaphragm 7 arranged here is reset after vibration by mechanical reset of its own bending section.

In any of the above solutions, preferably, the thickness of the main vibration plate 6 is 0.5-1 mm.

In any of the above solutions, preferably, the distance between the two convex curved surface structures 601 in the middle of the main vibration plate 6 is 1-1.5 mm.

In any of the above solutions, it is preferred that the bending section of the resonant diaphragm 7 is a semicircular structure, which can ensure that it has both toughness and compressive strength, can bend after being subjected to force, and can quickly reset after the force disappears.

In any of the above solutions, preferably, the spacing distance between the outer side of the main oscillating plate 6 and the horizontal section of the resonant diaphragm 7 is 5-8 mm. Setting a suitable spacing distance can ensure that the resonant diaphragm 7 has sufficient amplitude space.

The present invention also provides an earphone with a dual-harmonic headphone vibration plate unit, comprising two dual-harmonic headphone vibration plate units, the two dual-harmonic headphone vibration plate units A both adopt the dual-harmonic headphone vibration plate unit as described above, each of the dual-harmonic headphone vibration plate units A is installed inside the corresponding earphone shell 10, the input end of the transformer module of the dual-harmonic headphone vibration plate unit A is connected to the external audio input signal through the headphone plug 8 on the headphone cable 12, and the headphone cable 12 is integrated with a volume control key 9, and the two headphone shells 10 are connected through a head-mounted ear band 11.

The entire earphone is equipped with two dual-resonance earphone vibration units. The earphone adopts a head-mounted structure to ensure wearing comfort. At the same time, the volume can be controlled by the volume control button 9 on the headphone cable 12. In addition, according to different usage scenarios, the thin electrode 3 can be adjusted by adjusting each insulating screw 4, thereby adjusting the sound restoration degree of the earphone.

The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the specification of the present invention. For those skilled in the art, any replacement improvements or changes made to the implementation methods of the present invention fall within the protection scope of the present invention.

The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims (5)

1. The double-vibration resonance type earphone vibrating piece unit is characterized in that: the device comprises a main vibration module, a field control module and a transformation module, wherein the main vibration module, the field control module and the transformation module are all arranged in an integrated shell, the main vibration module is arranged between the field control modules and is connected with an external positive electrode end through a wire, two ends of the field control module are respectively connected with two ends of the transformation module, an input end of the transformation module is connected with an audio input signal, a double vibration resonance module is arranged on one side of the main vibration module, and the double vibration resonance module is matched with the main vibration module to resonate and improve the vibration amplitude of the edge;

the field control module comprises two thin pole plates which are fixedly arranged in a mounting cavity of the integrated shell and are arranged at intervals, two ends of the two thin pole plates are hinged to the inner wall of the mounting cavity, a middle field regulator piece is arranged on the outer side of the middle part of each thin pole plate, the two middle field regulator pieces are respectively used for regulating and controlling the middle space of the two thin pole plates, the two thin pole plates are respectively connected with two ends of the voltage transformation module through wires, and an interval space exists between the two thin pole plates and the main vibration module;

the main vibration module comprises a main vibration plate arranged in a mounting cavity between two thin polar plates, and two ends of the main vibration plate are fixedly arranged on the inner wall corresponding to the mounting cavity;

the double-vibration resonance type module comprises two resonance diaphragms fixedly arranged on two sides of the middle part of a corresponding main vibration plate, the root parts of the two resonance diaphragms are arranged at intervals, the inner ends of the resonance diaphragms are fixed on the main vibration plate, the outer ends of the resonance diaphragms are freely suspended, and the middle section and the outer ends of the resonance diaphragms are parallel to the main vibration plate;

the middle field regulator is used for controlling the degree of the tight support of the middle field regulator on the outer middle parts of the thin polar plates, so that the distance change between the outer middle parts of the two thin polar plates is realized, and the electric field force of the middle parts is regulated; the vibration amplitude of the main vibrating plate in the middle is adjusted, the adjustment and control of different audio input effects are realized, the reduction degree of the main vibrating plate to audio signals is improved, and meanwhile, the difference between the vibration frequency amplitudes of the main vibrating plate and the resonance diaphragm can be adjusted and controlled;

the outer ends of the two resonant diaphragms are arranged in a suspending way, and the inner ends of the two resonant diaphragms are connected with the main vibrating diaphragm; when the middle part of the main vibrating plate is acted by electric charge force, the main vibrating plate can be driven to vibrate; the root part and the resonance membrane connected with the root part can be carried by the vibration of the middle part to vibrate according to the vibration frequency and amplitude of the middle part connection part, and meanwhile, the suspension end of the resonance membrane can also vibrate by the charge force, so that the vibration amplitude of the edge part is improved, and the vibration amplitude of the middle part is ensured;

the inner end of the resonance diaphragm is integrally connected to the main vibration plate, and the resonance diaphragm is of a diaphragm structure formed by bending after being stamped from the main vibration plate.

2. The dual resonance earphone vibrating piece unit according to claim 1, wherein: the middle-domain field regulator comprises an insulating screw rod which is rotatably arranged in a screw hole in the inner wall of the corresponding position of the installation cavity, wherein a pressing ball part is arranged at the inner end of the insulating screw rod, the outer end of the insulating screw rod rotatably penetrates out of the integrated shell, and the pressing ball part enables the middle part of the outer side of the thin polar plate to be inwards protruded and deformed by pressing the middle part of the outer side of the thin polar plate at the corresponding position.

3. The dual resonance earphone vibrating piece unit according to claim 2, wherein: the precise external threads are arranged on the outer side wall of the inner section of the insulating screw, and the outer section rod diameter of the insulating screw is larger than the inner section rod diameter of the insulating screw.

4. A dual resonance earphone vibrating vane unit as claimed in claim 3, wherein: the transformation module adopts an equivalent circuit structure of a step-up transformer.

5. An earphone with double resonance earphone piece unit that shakes, its characterized in that: the device comprises two double-vibration-resonance type earphone vibrating sheet units, wherein the double-vibration-resonance type earphone vibrating sheet units are respectively arranged in corresponding earphone shells according to any one of claims 1-4, the input end of a transformation module of the double-vibration-resonance type earphone vibrating sheet unit is connected with an external audio input signal through an earphone plug on an earphone wire, a volume control key is integrated on the earphone wire, and the two earphone shells are connected through a head-mounted earphone belt.