Earphone capable of improving low-frequency characteristic

Abstract

The utility model discloses an earphone capable of improving low-frequency characteristics, which comprises an earphone shell, an earphone main body and a loudspeaker assembly connected with the earphone main body are arranged in the earphone shell, and the earphone main body is provided with a resonant cavity used for providing a sound resonance space and a bass filter tube matched with the resonant cavity to improve the low-frequency characteristics of sound. According to the earphone, firstly, an extra space is provided for sound through the resonant cavity, so that the sound is propagated in the resonant cavity and forms resonance, the intensity of a low-frequency signal is enhanced, and the low-frequency signal enhanced by the resonant cavity is tuned by the bass filter tube, so that the definition of the low-frequency sound is improved; through the cooperation of the resonant cavity and the bass filter tube, the intensity and depth of low-frequency sound are significantly improved, and a deeper and powerful bass effect can be provided.

Description

TECHNICAL FIELD

[0002] The utility model relates to earphone technical field especially relates to earphone of improving low frequency characteristic.

BACKGROUND TECHNIQUE

[0004] Earphone as a kind of modern life indispensable electronic equipment accessories, widely used in various fields. Because of the popularity of mobile phone or video player and other electronic products, and earphone as its supporting product, everywhere in daily life, it brings many conveniences to people at the same time, also adds infinite joy to life. In the design of existing earphone, the strength and definition of low frequency signal are often limited by the volume and structure of earphone cavity, resulting in insufficient fullness and force of low frequency sound of earphone.

UTILITARY MODEL CONTENT

[0006] To solve the current earphone due to the volume and structure of earphone cavity, resulting in insufficient fullness and force of low frequency sound of earphone technical problem, the utility model provides an earphone of improving low frequency characteristic.

[0007] The utility model is realized by the following technical schemes:

[0008] An earphone of improving low frequency characteristic, including earphone shell, earphone main part and loudspeaker assembly connected with earphone main part are equipped in earphone shell, earphone main part is equipped with the resonance cavity for providing sound resonance space, and the bass filter tube that improves the low frequency characteristic of sound with the resonance cavity cooperation.

[0009] An earphone of improving low frequency characteristic as described above, one end of the resonance cavity is connected with the loudspeaker assembly, the other end of the resonance cavity is connected with the bass filter tube.

[0010] An earphone of improving low frequency characteristic as described above, the resonance cavity is equipped with through-hole in one end connected with the bass filter tube, the diameter of through-hole is smaller than the diameter of bass filter tube.

[0011] An earphone of improving low frequency characteristic as described above, earphone main part is equipped with air pressure balance mechanism, air pressure balance mechanism includes buffer air channel and pressure relief hole for maintaining air pressure balance inside and outside earphone, one end of buffer air channel is connected with bass filter tube, the other end of buffer air channel is connected with pressure relief hole.

[0012] An earphone of improving low frequency characteristic as described above, the outer side of pressure relief hole is equipped with dust screen for preventing earphone inside from being contaminated, and the dust screen is strip cotton net.

[0013] An earphone of improving low frequency characteristic as described above, the diameter range of pressure relief hole is 0.5mm-2mm.

[0014] An earphone with improved low frequency characteristics as described above, at least one acoustic filter for suppressing low frequency resonance peak is arranged between the loudspeaker assembly and the resonance cavity.

[0015] An earphone with improved low frequency characteristics as described above, the loudspeaker assembly is a moving iron loudspeaker.

[0016] Compared with the prior art, the earphone with improved low frequency characteristics has the following beneficial effects:

[0017] 1. The earphone provided by the utility model firstly provides extra space for sound through the resonance cavity, so that the sound propagates in the resonance cavity and forms resonance, thereby enhancing the strength of low frequency signals, and the bass filter tube tunes the low frequency signals enhanced by the resonance cavity, thereby improving the clarity of low frequency sound; through the cooperation of the resonance cavity and the bass filter tube, the strength and depth of low frequency sound are significantly improved, and more deep and powerful bass effect can be provided.

[0018] 2. The air pressure balancing mechanism can quickly adjust the air pressure difference between the inside and outside of the earphone, effectively alleviates the compression and discomfort when wearing for a long time, improves the wearing comfort of the user, and also avoids damage to the eardrum caused by excessive air pressure difference.

[0019] 3. The volume of the resonance cavity is calculated based on acoustic calculation theory, which can effectively reduce acoustic distortion caused by air pressure changes, make the propagation of low frequency sound more stable, avoid audio quality blurring caused by complex reflection in the resonance cavity, and also help to reduce resonance of other non-target frequencies, avoid unnecessary sound mixing or distortion, and improve the overall audio quality. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced.

[0022] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0023] Figure 2 It is Figure 1 An exploded schematic diagram;

[0024] Figure 3 It is Figure 1 Another perspective exploded schematic diagram of the utility model;

[0025] Figure 4 It is a schematic diagram of the earphone main body structure of the utility model;

[0026] Figure 5 It is Figure 4 A cross-sectional schematic diagram;

[0027] Figure 6 The product structure schematic view of the utility model.

CONCRETE IMPLEMENTATION

[0029] In order to make the technical problem, technical scheme and beneficial effect solved by the utility model more clearly, the utility model is further explained in detail below by combining with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0030] Specific examples, combine Figures 1 to 6 As shown in the technical scheme of the utility model, a kind of earphone for improving low frequency characteristic, including earphone shell 10, earphone shell 10 inside is equipped with earphone main body 20 and the loudspeaker assembly 30 being connected with earphone main body 20, the earphone main body 20 is equipped with the resonance cavity 21 for providing sound resonance space, and the bass filter tube 22 for improving the low frequency characteristic of sound with resonance cavity 21 cooperation.The earphone first provides additional space for sound by resonance cavity 21, so that sound spreads in resonance cavity 21 and forms resonance, enhances the intensity of low frequency signal, and bass filter tube 22 tunes the low frequency signal enhanced after resonance cavity 21, improves the intelligibility of low frequency sound;Through the cooperation of resonance cavity 21 and bass filter tube 22, the intensity and depth of low frequency sound are significantly improved, and more deep, powerful bass effect can be provided.

[0031] Further, as the preferred embodiment of the present scheme but not limited, one end of the resonance cavity 21 is connected with the loudspeaker assembly 30, and the other end of the resonance cavity 21 is connected with the bass filter tube 22.

[0032] Among them, one end of the resonance cavity 21 and the bass filter tube 22 is provided with through hole 23, and the diameter of the through hole 23 is smaller than the diameter of the bass filter tube 22.

[0033] In the embodiment, the resonance cavity and the bass filter tube are connected through the through hole with smaller diameter, which can screen and tune the sound wave, attenuate high frequency signal;At the same time, low frequency signal is more efficiently output through bass filter tube, avoiding the interference of high frequency signal on low frequency effect;In addition, the through hole also limits the air flow from the resonance cavity to the bass filter tube, which helps to control the sound pressure level and avoid excessive low frequency output or distortion under high volume.

[0034] Further, as a preferred embodiment of the present scheme but not limited, the earphone body 20 is provided with an air pressure balancing mechanism 24, the air pressure balancing mechanism 24 comprises a buffer air channel 241 and a pressure relief hole 242 for maintaining the air pressure balance inside and outside the earphone, one end of the buffer air channel 241 is connected with the bass filter tube 22, the other end of the buffer air channel 241 is connected with the pressure relief hole 242, the outside of the pressure relief hole 242 is provided with a dust screen 243 for preventing the earphone inside from being contaminated, and the dust screen 243 is a strip cotton screen.

[0035] In the embodiment, the diameter of the pressure relief hole 242 is preferably 1mm, and in the specific implementation, the diameter of the pressure relief hole 242 can be adjusted according to the cavity volume inside the earphone and the sealing performance of the earphone.

[0036] In addition, although only one pressure relief hole 242 is provided in the embodiment, the number of pressure relief holes 242 can also be increased according to the cavity volume inside the earphone and the sealing performance of the earphone in the specific implementation.

[0037] In the embodiment, the air pressure balancing mechanism can quickly adjust the air pressure difference inside and outside the earphone, effectively relieve the compression and discomfort when wearing for a long time, improve the wearing comfort of the user, and also avoid damage to the eardrum due to excessive air pressure difference; secondly, the design of the pressure relief hole helps to release the excess air pressure without losing low-frequency energy, so that the low-frequency sound is more stable and clear, and the dust screen covers the outside of the pressure relief hole, which can effectively block dust and other impurities from entering the earphone inside, thereby avoiding damage caused by contamination inside the earphone.

[0038] In addition, the air flow in the buffer air channel can buffer the air pressure fluctuation caused by vibration, avoid acoustic distortion caused by air pressure change, and thus improve the stability and clarity of the sound quality.

[0039] Further, as a preferred embodiment of the present scheme but not limited, the actual volume of the resonance cavity 21 is determined based on the acoustic calculation theory, and the specific calculation principle is as follows:

[0040] The opening cross-sectional area A and the effective length L of the bass filter tube 22 are measured;

[0041] The target low-frequency range is determined;

[0042] The opening cross-sectional area A, the effective length L and the target low-frequency range are determined by the resonance frequency calculation formula, and the resonance frequency calculation formula is

[0043] .

[0044] The target low frequency range is 5Hz-20Hz, that is, the resonance cavity 21 has better low frequency resonance effect on low frequency sound in the range of 5Hz-20Hz, and of course has low frequency resonance effect on low frequency sound in other low frequency ranges.

[0045] In the embodiment, the resonance cavity designed based on acoustic calculation theory can effectively reduce acoustic distortion caused by air pressure change, make the propagation of low frequency sound more stable, avoid sound quality blurring caused by complex reflection in the resonance cavity, and help reduce resonance of other non-target frequencies, avoid unnecessary sound mixing or distortion, and improve overall audio quality.

[0046] Further, as a preferred embodiment of the scheme but not limited, at least one acoustic filter 40 for suppressing low frequency resonance peak is arranged between the loudspeaker assembly 30 and the resonance cavity 21.

[0047] The loudspeaker assembly 30 is a moving coil loudspeaker, the outer diameter of the acoustic filter 40 is 1.4mm, and the number of the acoustic filter 40 is 2, and in specific implementation, the number of the acoustic filter 40 can be adjusted according to actual design requirements.

[0048] In the embodiment, the acoustic filter can effectively suppress the low frequency resonance peak, avoid excessive enhancement or distortion of low frequency sound caused by the resonance peak, make the low frequency performance more natural and balanced, reduce resonance and noise, make the audio signal more pure, and improve the overall listening experience.

[0049] The working principle of the embodiment is as follows:

[0050] The earphone for improving low frequency characteristics provided by the utility model, through the cooperation of resonance cavity 21 and bass filter tube 22, can significantly improve the intensity and depth of low frequency sound, and can provide more deep and powerful bass effect, and the specific principle is:

[0051] The sound emitted by the loudspeaker assembly 30 will first pass through the resonance cavity 21, so that the sound propagates in the resonance cavity 21 and forms resonance, enhancing the intensity of the low frequency signal, and the bass filter tube 22 tunes the low frequency signal enhanced by the resonance cavity 21, improves the clarity of the low frequency sound, and thus the earphone can provide more powerful bass effect;

[0052] In addition, the earphone body 20 is provided with an air pressure balancing mechanism 24, a buffer air channel 241 of the air pressure balancing mechanism 24 can buffer the air pressure fluctuation caused by vibration, avoid the acoustic distortion caused by the air pressure change, thereby improving the stability and clarity of the sound quality, the pressure relief hole 242 of the air pressure balancing mechanism 24 is constantly open, can adjust the air pressure difference inside and outside the earphone at any time, thereby effectively relieving the compression and discomfort when wearing for a long time, improving the wearing comfort of the user.

[0053] Those skilled in the art should understand that the above description is an embodiment provided in combination with specific content, and does not mean that the specific implementation of the utility model is limited to these descriptions. Since the industry naming is not the same, it is not limited to the above naming, and it is not limited to the English naming. Any approximation, similarity or replacement of the method and structure of the utility model, or any technical deduction or replacement under the premise of the concept of the utility model, should be regarded as the protection scope of the utility model.

Claims

1. An earphone for improving low frequency characteristics, characterized by comprising: The earphone comprises an earphone shell (10), an earphone main body (20) and a loudspeaker assembly (30) connected with the earphone main body (20) are arranged in the earphone shell (10), the earphone main body (20) is provided with a resonance cavity (21) for providing a sound resonance space, and a bass filter tube (22) for improving the low frequency characteristic of sound in cooperation with the resonance cavity (21).

2. The earphone of claim 1, wherein the first and second acoustic ports are arranged to be substantially symmetric with respect to a plane that is perpendicular to the longitudinal axis and that passes through the center of the diaphragm. One end of the resonance cavity (21) is connected with the loudspeaker assembly (30), and the other end of the resonance cavity (21) is connected with the bass filter tube (22).

3. The earphone of claim 1, wherein the first and second acoustic ports are arranged to be substantially symmetric with respect to a plane that is perpendicular to the longitudinal axis and that passes through the center of the diaphragm. The end of the resonance cavity (21) connected with the bass filter tube (22) is provided with a through hole (23), and the diameter of the through hole (23) is smaller than the diameter of the bass filter tube (22).

4. The earphone of claim 1, wherein the earphone is configured to improve low frequency characteristics. The earphone main body (20) is provided with an air pressure balancing mechanism (24), the air pressure balancing mechanism (24) comprises a buffer air channel (241) and a pressure relief hole (242) for maintaining the air pressure balance inside and outside the earphone, one end of the buffer air channel (241) is connected with the bass filter tube (22), and the other end of the buffer air channel (241) is connected with the pressure relief hole (242).

5. The earphone of claim 4, wherein the first and second acoustic ports are arranged to be substantially aligned with each other when the earphone is in the first position. The outer side of the pressure relief hole (242) is provided with a dustproof net (243) for preventing the inside of the earphone from being contaminated, and the dustproof net (243) is a strip cotton net.

6. The earphone of claim 4, wherein the first and second diaphragms are made of a material having a density of 1.0 g / cm3 or less. The diameter of the pressure relief hole (242) ranges from 0.5mm to 2mm.

7. The earphone of claim 1, wherein the earphone is configured to improve low frequency characteristics. At least one acoustic filter (40) for suppressing the low frequency resonance peak is arranged between the loudspeaker assembly (30) and the resonance cavity (21).

8. The earphone of claim 1, wherein, The loudspeaker assembly (30) is a moving-iron loudspeaker.

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