A pair of headphones

Abstract

The present invention provides an earphone, comprising: a housing having a sound - generating section and a hollow section connected to each other, with a sound output port on a side of the sound - generating section facing away from the hollow section, the sound output port being configured to receive an audio signal and vibrate to generate sound according to the audio signal; and an adjusting member disposed in the hollow section and partially inserted into the hollow section, the adjusting member defining a resonant cavity adjacent to the sound - generating section and on a side facing away from the sound output port inside the hollow section, and the volume of the resonant cavity can be changed only from inside the hollow section by the movement of the adjusting member relative to the hollow section, so as to adjust the sound output from the sound output port while keeping the external dimensions of the earphone unchanged; it can controllably change the acoustic performance of the earphone without complicating the electronic devices and control programs, and effectively prevent the earphone from shaking and falling off, and has a compact structure.

Description

Technical Field

[0001] The present invention relates to the field of audio output devices, and particularly to a headphone. Background Art

[0002] Existing headphone systems receive electrical signals representing audio sounds and convert the electrical signals into audio sound waves through a driving unit. The driving unit includes a diaphragm responsive to the electrical signal, and the diaphragm vibrates to disturb the surrounding air, thereby generating audio sound waves. Existing headphones come in a variety of forms and can provide different performance levels. Some headphones have sufficient low-frequency characteristics and can respond well to lower-frequency input signals; some headphones have sufficient high-frequency characteristics and can respond well to higher-frequency input signals; however, these headphones often cannot accurately reproduce input signals of various frequencies.

[0003] For this reason, some existing high-quality headphones are provided with high, medium, and low-frequency combined speakers to reproduce input signals of various frequencies; however, more electronic components and complex control programs are added. There are also some headphones that controllably change the acoustic performance of the headphones by changing the volume of the space in front of and / or behind the diaphragm; however, it is necessary to change the overall geometric dimensions of the headphones, especially for semi-in-ear and in-ear headphones, which moves the center of gravity of the headphones away from the user's ears, resulting in the headphones being prone to shaking or even falling out, and being unfavorable for the compactness of the headphones. Summary of the Invention

[0004] In view of the above-mentioned drawbacks in the prior art, the present invention provides a headphone, comprising: a housing having a sound-generating section and a hollow section connected to each other, and a sound output port on a side of the sound-generating section facing away from the hollow section, the sound output port being configured to receive an audio signal and vibrate to generate sound according to the audio signal; and an adjusting member disposed in the hollow section and partially inserted into the hollow section, the adjusting member defining a resonance chamber adjacent to the sound-generating section and facing away from the sound output port side inside the hollow section, and the volume of the resonance chamber can be changed only from inside the hollow section by the movement of the adjusting member relative to the hollow section, so as to adjust the sound output from the sound output port while keeping the external dimensions of the headphone unchanged.

[0005] Preferably, the adjusting member includes a flexible cover, a connecting portion, a fixing plate, a screw, and a rotating portion.

[0006] Preferably, the flexible cover covers the surface of the sound-emitting section facing away from the sound output port inside the hollow section, thereby forming the resonance chamber; the fixed plate has a central threaded hole and is fixed inside the hollow section, the rotating part has a central connecting hole and is rotatably connected to the outside of the hollow section, the screw is axially fixedly connected to the center position of the flexible cover through the connecting part, the screw is threadedly connected to the central threaded hole and is connected to the central connecting hole through a keyway.

[0007] Preferably, the inner surface of the flexible cover is in the shape of an ellipsoid or a parabola.

[0008] Preferably, the connecting portion includes an arc-shaped plate and a universal joint.

[0009] Preferably, the arc-shaped plate is arranged inside the center position of the flexible cover, or the arc-shaped plate is arranged closely to the center position of the flexible cover and is located inside the resonance chamber.

[0010] Preferably, the arc-shaped plate is connected to the screw rod via the universal joint.

[0011] Preferably, the screw rod is provided with at least one slide groove, and the central connecting hole is provided with a convex key matching the slide groove.

[0012] Preferably, the screw rod is provided with at least one first sliding groove, and the central connecting hole is provided with at least one second sliding groove, and the first sliding groove and the second sliding groove jointly accommodate the key block.

[0013] Preferably, the regulating member comprises at least one set of closely arranged fixed orifice plates and rotating orifice plates.

[0014] Preferably, the fixed orifice plate has a first adjustment hole and is fixed inside the hollow section, and the rotating orifice plate has a second adjustment hole and is rotatably arranged inside the hollow section, and the rotating orifice plate can selectively not cover or at least partially cover the first adjustment hole by rotating it.

[0015] Preferably, the fixed orifice plate and the rotating orifice plate main body are circular, and the first adjustment hole and the second adjustment hole are both fan-shaped radiating from the center of the circle to the periphery.

[0016] Preferably, the outer edge of the rotating orifice plate is provided with an operating portion, and a user can drive the rotating orifice plate to rotate by turning the operating portion.

[0017] Preferably, the earphone is a semi-in-ear or in-ear earphone.

[0018] The present invention provides an earphone, comprising: a housing having a sound - generating section and a hollow section connected to each other, a sound output port being provided on a side of the sound - generating section facing away from the hollow section, the sound output port being configured to receive an audio signal and vibrate to generate sound according to the audio signal; and an adjustment member disposed in the hollow section and partially inserted into the hollow section, the adjustment member defining a resonant cavity adjacent to the sound - generating section and facing away from the side of the sound output port inside the hollow section, and the volume of the resonant cavity can be changed only from inside the hollow section by the movement of the adjustment member relative to the hollow section, so as to adjust the sound output from the sound output port while keeping the external dimensions of the earphone unchanged; it can controllably change the acoustic performance of the earphone without complicating the electronic devices and control programs, and effectively prevent the earphone from shaking and falling off, with a compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic internal structure diagram of an earphone according to an embodiment of the present invention.

[0020] Figure 2 For the present invention Figure 1 FIG. is a schematic mating structure diagram of a screw and a rotating part according to an embodiment of the present invention.

[0021] Figure 3 FIG. is a schematic internal structure diagram of another earphone according to an embodiment of the present invention.

[0022] Figure 4 For the present invention Figure 3 FIG. is a schematic structure diagram of a fixing hole plate and a rotating hole plate of an earphone according to an embodiment of the present invention.

[0023] Wherein, earphone - 100, sound - generating section - 101, sound output port - 102, hollow section - 103, flexible cover - 104, resonant cavity - 105, arc plate - 106, screw - 107, universal joint - 108, rotating part - 109, fixing plate - 110, wire harness - 111, key block - 112, fixing hole plate - 204, first adjustment hole - 2041, rotating hole plate - 206, second adjustment hole - 2061, operation part - 207. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to address the problems of complex mechanisms, easy shaking and falling off, and non - compact structure when the existing earphones controllably change the acoustic performance, the earphone provided by the present invention is realized through the following technical solutions:

[0025] Embodiment:

[0026] This embodiment provides an earphone 100. Please refer to Figure 1, including: a housing having a sound - generating section 101 and a hollow section 103 connected to each other. On one side of the sound - generating section 101 facing away from the hollow section 103, there is a sound output port 102, and the sound output port 102 is used to receive an audio signal and vibrate to generate sound according to the audio signal; and an adjusting member. The adjusting member is disposed in the hollow section 103 and partially inserted into the hollow section 103. The adjusting member defines a resonant cavity 105 adjacent to the sound - generating section 101 and on the side facing away from the sound output port 102 inside the hollow section 103. By moving the adjusting member relative to the hollow section 103, the volume of the resonant cavity 105 can be changed only from inside the hollow section 103, so as to adjust the sound output from the sound output port 102 while keeping the external dimensions of the earphone 100 unchanged.

[0027] Specifically, the hollow section 103 is a hollow cylindrical shape.

[0028] Specifically, the adjusting member includes a flexible cover 104, a connecting portion, a fixing plate 110, a screw 107, and a rotating portion 109.

[0029] Specifically, the flexible cover 104 covers the surface of the sound - generating section 101 on the side facing away from the sound output port 102 inside the hollow section 103, thereby forming the resonant cavity 105; the fixing plate 110 has a central threaded hole and is fixed inside the hollow section 103, the rotating portion 109 has a central connection hole and is rotatably connected to the outside of the hollow section 103, the screw 107 is axially fixedly connected to the central position of the flexible cover 104 through the connecting portion, and the screw 107 is thread - connected to the central threaded hole and key - slot - connected to the central connection hole.

[0030] Specifically, the inner surface of the flexible cover 104 is an ellipsoidal surface or a parabolic surface. The inner surface of the flexible cover 104 can also be an arc surface of other smooth shapes. Based on this smooth shape, the irregular reflection of sound waves inside the resonant cavity 105 is weakened. When the flexible cover 104 is not fully stretched, its wall thickness is larger, which is beneficial to low - frequency resonance; when the flexible cover 104 is fully stretched, its wall thickness is smaller, which is beneficial to high - frequency resonance.

[0031] Specifically, the connecting portion includes an arc - shaped plate 106 and a universal joint 108.

[0032] Specifically, the arc - shaped plate 106 is disposed inside the central position of the flexible cover 104, or the arc - shaped plate 106 is closely attached to the central position of the flexible cover 104 and is located inside the resonant cavity 105.

[0033] Specifically, the arc - shaped plate 106 connects the screw 107 through the universal joint 108.

[0034] Specifically, the screw rod 107 is provided with at least one sliding groove, and the central connecting hole is provided with a convex key matching the sliding groove.

[0035] Specifically, see Figure 2 The screw rod 107 has at least one first slide groove 1071 , and the central connecting hole has at least one second slide groove 1091 . The first slide groove 1071 and the second slide groove 1091 jointly accommodate the key block 112 .

[0036] During operation, the user rotates the rotating part 109, and the rotating part 109 drives the screw 107 to rotate relative to the central threaded hole of the fixing plate 110 through the keyway. Since the fixing plate 110 is fixed, the screw 107 produces axial linear motion, and the key structure slides axially in the slide groove structure. One end of the screw 107 is connected to the arc plate 106 through the universal joint 108, thereby pulling the flexible cover 104 to different degrees, so that the flexible cover 104 changes the volume of the internal space and changes its own wall thickness. The two combinedly change the volume and performance of the resonant chamber 105, and can adapt to the performance requirements of audio signals of different frequency types. The specific operation degree of the rotating part 109 and the corresponding relationship between the frequency type are calibrated through experiments.

[0037] Specifically, see Figure 3 , Figure 4 The regulating member includes at least one set of closely arranged fixed orifice plates 204 and rotating orifice plates 206.

[0038] Specifically, the fixed orifice plate 204 has a first adjustment hole 2041 and is fixed inside the hollow section 103, and the rotating orifice plate 206 has a second adjustment hole 2061 and is rotatably arranged inside the hollow section 103. By rotating the rotating orifice plate 206, the first adjustment hole 2041 can be selectively not covered or at least partially covered.

[0039] Specifically, the main bodies of the fixed orifice plate 204 and the rotating orifice plate 206 are circular, and the first adjustment holes 2041 and the second adjustment holes 2061 are both fan-shaped and radiate from the center of the circle to the periphery.

[0040] Specifically, the outer edge of the rotating orifice plate 206 is provided with an operating portion 207 , and the user can drive the rotating orifice plate 206 to rotate by turning the operating portion 207 .

[0041] During operation, the user rotates the operation part 207 to drive the rotating orifice plate 206 to rotate. When at least part of the first adjustment hole 2041 and the second adjustment hole 2061 overlap, the spaces on both sides of the fixed orifice plate 204 where the first adjustment hole 2041 is located are communicated. The more the space communicated from the sound generating section 101 towards the hollow section 103, the larger the volume of the resonant cavity 105. Moreover, different communication areas and their arrangement orders make the vibration characteristics of the resonant cavity 105 also different. The two comprehensively change the volume and performance of the resonant cavity 105, and can meet the performance requirements of audio signals of different frequency types. The corresponding relationship between the specific operation degree of the operation part 207 and the frequency type is calibrated through experiments.

[0042] Specifically, the earphone 100 is a semi-in-ear or in-ear earphone. The earphone 100 is a wired earphone or a wireless earphone; when the earphone 100 is a wired earphone, it is equipped with a wire harness 111.

[0043] This embodiment provides an earphone 100, including: a housing having a sound generating section and a hollow section 103 connected to each other. On the side of the sound generating section 101 facing away from the hollow section 103, there is a sound output port 102 for receiving an audio signal and vibrating to generate sound according to the audio signal; and an adjustment member disposed in the hollow section 103 and partially inserted into the hollow section 103. The adjustment member defines a resonant cavity 105 adjacent to the sound generating section 101 and on the side facing away from the sound output port 102 inside the hollow section 103. By moving the adjustment member relative to the hollow section 103, the volume of the resonant cavity 105 can be changed only from inside the hollow section 103, thereby adjusting the sound output from the sound output port 102 and keeping the external dimensions of the earphone 100 unchanged; it can controllably change the acoustic performance of the earphone 100 without complicating the electronic devices and control programs, and effectively prevent the earphone 100 from shaking and falling off, with a compact structure.

[0044] It should be noted that the above content is a further detailed description of the present invention in combination with specific implementation manners. It cannot be determined that the specific implementation manners of the present invention are limited thereto. Under the guidance of the above embodiments, those skilled in the art can make various improvements and deformations on the basis of the above embodiments, and these improvements or deformations fall within the protection scope of the present invention.

Claims

1. A headphone, characterized in that, Comprising: A housing having a sound - generating section and a hollow section connected to each other. On one side of the sound - generating section facing away from the hollow section, there is a sound output port for receiving an audio signal and vibrating to generate sound according to the audio signal. And an adjusting member disposed in the hollow section and partially inserted into the hollow section. The adjusting member defines a resonance chamber adjacent to the sound - generating section and on the side facing away from the sound output port inside the hollow section. By the movement of the adjusting member relative to the hollow section, the volume of the resonance chamber can be changed only from inside the hollow section, thereby adjusting the sound output from the sound output port while keeping the external dimensions of the earphone unchanged. The adjusting member includes a flexible cover, a connecting portion, a fixing plate, a screw, and a rotating portion. The flexible cover covers the surface of the sound - generating section on the side facing away from the sound output port inside the hollow section, thereby forming the resonance chamber. The fixing plate has a central threaded hole and is fixed inside the hollow section. The rotating portion has a central connection hole and is rotatably connected to the outside of the hollow section. The screw is axially fixedly connected to the central position of the flexible cover through the connecting portion, and the screw is thread - connected to the central threaded hole and key - connected to the central connection hole through a keyway.

2. The earphone according to claim 1, wherein, The inner surface of the flexible cover is ellipsoidal or parabolic.

3. The earphone according to claim 2, wherein The connecting portion includes an arc - shaped plate and a universal joint.

4. The earphone according to claim 3, wherein, The arc - shaped plate is disposed inside the central position of the flexible cover, or the arc - shaped plate is closely attached to the central position of the flexible cover and is located inside the resonance chamber.

5. The earphone according to claim 4, wherein The arc - shaped plate connects the screw through the universal joint.

6. The earphone according to claim 5, characterized in that, The screw has at least one chute, and the central connection hole has a convex key matching the chute.

7. The earphone according to claim 5, characterized in that, The screw has at least one first chute, and the central connection hole has at least one second chute. The first chute and the second chute jointly accommodate a key block.

8. The earphone according to any one of claims 1-7, characterized in that, The earphone is a semi - in - ear or in - ear earphone.

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