Earphones and earphone shells with acoustic functions

Abstract

The present invention provides an earphone and an earphone shell with an acoustic function, the earphone shell with an acoustic function comprises a main acoustic shell with an accommodating cavity and an earmuff, a supporting structure is provided in the accommodating cavity, the part of the accommodating cavity in front of the supporting structure is a front cavity, a sound guide tube is installed in the front cavity, a connecting plate is extended outward from the front end of the sound guide tube, the connecting plate is connected to the main acoustic shell, an inner cavity is formed in the area corresponding to the inner side of the sound guide tube in the front cavity, and an outer cavity is formed in the area corresponding to the outer side of the sound guide tube in the front cavity. The present invention installs a sound guide tube in the front cavity of the main acoustic shell to divide the front cavity into an inner cavity and an outer cavity, so that the sound emitted by the sound-emitting unit can be better acoustically processed, the mid-range distortion is extremely small, the treble extension is improved, the low frequency dive is deep, clean and full, so that the energy distribution of the treble, mid-range and bass is uniform, and the fusion between frequency bands is natural and smooth without abruptness and burrs, so as to better achieve high-fidelity effects.

Description

Technical Field

[0001] The present invention belongs to the field of earphones, and more specifically, relates to an earphone shell with acoustic function and an earphone using the earphone shell with acoustic function. Background Art

[0002] The frequency range of sound that the human ear can hear is: 20Hz ~ 20000Hz. In the entire audible sound frequency range of 20Hz ~ 20kHz, the upper and lower limits of the frequency are 10 octaves in total. Generally, the audible sound is divided into three parts according to the octave relationship to determine the low, medium and high frequency bands. That is: the low frequency band is 20Hz ~ 160Hz (3 times the frequency); the medium frequency band is 160Hz ~ 2500Hz (4 times the frequency); the high frequency band is 2500Hz ~ 20000Hz (3 times the frequency). The human ear feels that the sound loudness of the medium frequency band is relatively large and relatively flat. The sound loudness felt in the high frequency band gradually decreases with the increase of frequency, which is a slant line. The low frequency band decreases sharply below 80Hz, and the steepness of the slant line is relatively large. Generally, the sharp decrease in the low frequency band is called the low-frequency "sluggish" phenomenon. High fidelity refers to the playback sound that is highly similar to the original sound. Headphones generally include a sound unit and a casing. The earphone shell has a front cavity and a rear cavity, wherein the cavity in front of the sound unit is the front cavity, and the cavity behind the sound unit is the rear cavity. The front cavity of the current earphone shell generally guides the sound emitted by the sound unit, and the rear cavity of the earphone shell reflects part of the sound, especially the bass, to increase the bass. However, the acoustic processing effect of this earphone shell on the sound is poor, and it is difficult to achieve high-fidelity effect. Summary of the invention

[0003] The purpose of the present invention is to provide an earphone shell with acoustic function to solve the problem that the earphone shell in the prior art has poor sound acoustic processing effect.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an earphone shell with acoustic function, comprising a main acoustic shell with an accommodating cavity and an earmuff installed at the front end of the main acoustic shell, the accommodating cavity is provided with a supporting structure for supporting a sound unit, the part of the accommodating cavity on the front side of the supporting structure is a front cavity, and the part of the accommodating cavity on the rear side of the supporting structure forms a rear cavity, a sound guide tube in a front-to-back penetrating shape is installed in the front cavity, the rear end of the sound guide tube surrounds the area on the supporting structure where the sound unit is installed, the front end of the sound guide tube extends outward with a connecting plate, the connecting plate is connected to the main acoustic shell, the area in the front cavity corresponding to the inner side of the sound guide tube forms an inner cavity, and the area in the front cavity corresponding to the outer side of the sound guide tube forms an outer cavity.

[0005] Furthermore, the sound guide is in the shape of a trumpet, and the cross-sectional area of ​​the inner cavity gradually expands from the back to the front.

[0006] Furthermore, a sound filter is installed at the front end of the sound guide tube, and the sound filter covers the front end of the inner cavity.

[0007] Furthermore, the supporting structure is a supporting plate installed in the accommodating cavity, the periphery of the supporting plate is connected to the main acoustic shell, and an opening is provided in the area of ​​the supporting plate corresponding to the rear end of the acoustic conductor.

[0008] Furthermore, a sound cover for accommodating and supporting the sound-emitting unit is installed on the support plate, the sound cover covers the opening, and a plurality of sound outlet holes are opened at the front end of the sound cover.

[0009] Furthermore, the main acoustic shell includes a main shell structure with an opening at the rear end and a cover mechanism covering the opening, the accommodating cavity is formed in the main shell structure, the main shell structure is connected to the sound conductor, and the earmuff is installed at the front end of the main shell structure.

[0010] Furthermore, the main shell structure includes a skeleton and an outer shell covering the skeleton, the skeleton includes a front frame, a rear frame and a plurality of supporting ribs connecting the front frame and the rear frame, the supporting structure is connected to the supporting ribs, the opening is formed in the rear frame, the skeleton is connected to the sound guide tube, and the earmuff is installed at the front end of the main shell structure.

[0011] Furthermore, the main shell structure also includes a plurality of tuning plates that cooperate to cover the outer side of the frame, and each of the tuning plates is located between the rear frame and the front frame.

[0012] Furthermore, the earmuff includes a sponge cover connected to the periphery of the front end of the main sound shell, a surface skin covering the sponge cover and a mesh installed in the sponge cover, and the plane where the mesh is located is inclined to the plane where the front end of the sound guide tube is located.

[0013] The beneficial effect of the earphone shell with acoustic function provided by the present invention is that compared with the prior art, the present invention installs a sound guide tube in the front cavity of the main sound shell to divide the front cavity into an inner cavity and an outer cavity. The inner cavity can better guide the sound emitted by the sound unit; the outer cavity can prevent resonance and attenuate the excess energy of each frequency band, thereby better acoustically processing the sound emitted by the sound unit, making the mid-range distortion extremely small, improving the treble extension, and the low-frequency dive deep, clean and full, so that the treble, mid-range and bass energy are evenly distributed, and the fusion between frequency bands is natural and smooth without abruptness and burrs, so as to better achieve high-fidelity effects.

[0014] Another object of the present invention is to provide an earphone, comprising a sound-emitting unit and an earphone shell with acoustic function as described above, wherein the sound-emitting unit is mounted on the supporting structure.

[0015] The earphone of the present invention uses the above-mentioned earphone shell with acoustic function, which can better perform acoustic processing on the sound emitted by the sound-emitting unit, so that the three frequencies of the sound emitted by the earphone are balanced, achieving a high-fidelity effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the structure of an earphone shell with acoustic function provided by an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of an earphone shell with acoustic function;

[0019] Figure 3 for Figure 1 A schematic diagram of the exploded structure of an earphone shell with acoustic function;

[0020] Figure 4 for Figure 3 Schematic diagram of the exploded structure of the middle earmuff;

[0021] Figure 5 for Figure 4 Schematic diagram of the exploded structure of the main sound shell and the sound guide tube;

[0022] Figure 6 for Figure 5 Schematic diagram of the exploded structure of the middle main shell structure and the sound guide tube Figure 1 ;

[0023] Figure 7 for Figure 5 Schematic diagram of the exploded structure of the middle main shell structure and the sound guide tube Figure 2 ;

[0024] Figure 8 for Figure 7 Schematic diagram of the structure when the middle frame, support plate and tuning piece are combined Figure 1 ;

[0025] Fig. 9 for Figure 7 Schematic diagram of the structure when the middle frame, support plate and tuning piece are combined Figure 2 ;

[0026] Fig.10 for Figure 7 Schematic diagram of the structure when the middle tone piece is separated from the frame;

[0027] Fig.11 for Figure 7 Schematic diagram of the enlarged structure of the mesoskeleton.

[0028] Among them, the main marks of the drawings in the figure are:

[0029] 10-earmuffs; 11-sponge cover; 111-positioning step; 12-face skin; 13-mesh cloth; 14-connecting ring; 141-buckle; 15-sealing pad; 151-through opening;

[0030] 20-main acoustic shell; 21-accommodating cavity; 22-front cavity; 221-inner cavity; 222-outer cavity; 23-rear cavity; 24-sound adjustment hole;

[0031] 31-sound guide tube; 311-connecting plate; 312-card slot; 32-sound filter; 33-first sealing gasket;

[0032] 40-cover mechanism; 41-mesh plate; 42-support ring; 43-dustproof cloth; 44-cloth sheet;

[0033] 50-main shell structure; 51-frame; 511-front frame; 512-rear frame; 513-support ribs; 514-middle frame; 515-fixing box; 52-tuning plate; 53-front shell; 531-notch; 532-support box; 533-through hole; 534-audio socket; 535-cover plate; 54-middle shell; 55-silencing plate;

[0034] 61 - supporting plate; 611 - tuning hole; 62 - sound cover; 621 - sound outlet hole; 63 - second sealing pad. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0038] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Please also read Figures 1 to 11The earphone shell with acoustic function provided by the present invention is now described. The earphone shell with acoustic function comprises a main acoustic shell 20 and an earmuff 10, wherein the earmuff 10 is mounted at the front end of the main acoustic shell 20; a receiving cavity 21 is provided in the main acoustic shell 20, and components such as a sound unit and a circuit board can be installed in the receiving cavity 21. A supporting structure is provided in the receiving cavity 21, and the supporting structure is used to support the sound unit, so as to facilitate supporting the sound unit in the receiving cavity 21. The part of the accommodating cavity 21 on the front side of the supporting structure is the front cavity 22, and the part of the accommodating cavity 21 on the rear side of the supporting structure forms the rear cavity 23. A sound guide tube 31 is installed in the front cavity 22, and the sound guide tube 31 is in a front-to-back penetrating shape so as to guide the sound emitted by the sound unit; the rear end of the sound guide tube 31 surrounds the area where the sound unit is installed on the supporting structure, that is, when the sound unit is installed on the supporting structure, the rear end of the sound guide tube 31 surrounds the sound unit, and the sound unit is located in the area corresponding to the rear end of the sound guide tube 31; a connecting plate 311 extends outward from the front end of the sound guide tube 31, and the connecting plate 311 is connected to the main sound shell 20. The connecting plate 311 is arranged at the front end of the sound guide tube 31 to facilitate fixing the sound guide tube 31 in the main sound shell 20. An inner cavity 221 is formed in the area of ​​the front cavity 22 corresponding to the inner side of the sound conductor 31, and an outer cavity 222 is formed in the area of ​​the front cavity 22 corresponding to the outer side of the sound conductor 31, that is, the sound conductor 31 divides the front cavity 22 into an inner cavity 221 and an outer cavity 222, the part of the outer side of the sound conductor 31 corresponding to the front cavity 22 is the outer cavity 222, and the interior of the sound conductor 31 forms an inner cavity 221; the inner cavity 221 can better guide the sound emitted by the sound-emitting unit, so that the sound of each frequency band can be guided out to a greater extent to ensure the volume; and the outer cavity 222 can attenuate excessive energy in each frequency band and prevent resonance. In comparison, the bass attenuation is relatively small, even if the bass is appropriately enhanced auditorily, the energy distribution of each frequency band is more uniform.

[0041] Compared with the prior art, the earphone shell with acoustic function provided by the present invention installs a sound guide tube 31 in the front cavity 22 of the main sound shell 20 to divide the front cavity 22 into an inner cavity 221 and an outer cavity 222. The inner cavity 221 can better guide the sound emitted by the sound unit; the outer cavity 222 can prevent resonance and attenuate the excess energy of each frequency band, thereby better performing acoustic processing on the sound emitted by the sound unit, so that the mid-range distortion is extremely small; the treble extension is improved, the low-frequency dive is deep, clean and full, elastic and powerful; the treble, mid-range and bass energy are evenly distributed, and the fusion of the sounds in each frequency band is natural and smooth, without abruptness and burrs, so as to better achieve high-fidelity effects.

[0042] Please also refer to Figure 2 , Figure 6 and Figure 7As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the sound guide tube 31 is horn-shaped, and the cross-sectional area of ​​the inner cavity 221 is gradually expanded from back to front. The sound guide tube 31 is set in a horn shape, which can better guide and diffuse the sound and reduce the attenuation of the sound.

[0043] Please also refer to Figure 2 , Figure 6 and Figure 7 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the earphone shell with acoustic function further includes a first sealing gasket 33 which is fitted between the main acoustic shell 20 and the connecting plate 311. The first sealing gasket 33 is provided to better seal the connecting plate 311 and the main acoustic shell 20, prevent sound from leaking from between the connecting plate 311 and the main acoustic shell 20, and better guide the sound from the set position.

[0044] Please also refer to Figure 2 , Figure 6 and Figure 7 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, a sound filter 32 is installed at the front end of the sound guide tube 31. The sound filter 32 is provided to absorb part of the high-frequency sound to better prevent the sound from being harsh. The sound filter 32 can be a sponge sheet or other cloth sheets. Covering the front end of the inner cavity 221 with the sound filter 32 can make the sound filter 32 better absorb part of the high-frequency sound, thereby making the fusion of the sounds of each frequency band more natural and smooth, and making the sound energy of the three frequency bands more balanced.

[0045] Please also refer to Figure 2 , Figure 6 and Figure 7 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, a first positioning groove (not shown in the figure) for positioning and installing the sound filter 32 is provided on the inner side of the front end of the sound guide tube 31. The first positioning groove is provided at the front end of the sound guide tube 31 to facilitate the installation of the sound filter 32 and facilitate assembly and fixation.

[0046] Please also refer to Figure 2 , Figures 6 to 8As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the supporting structure is a supporting plate 61 installed in the accommodating cavity 21, the periphery of the supporting plate 61 is connected to the main acoustic shell 20, and an opening (not shown in the figure) is provided in the area corresponding to the rear end of the sound guide tube 31 on the supporting plate 61. The supporting plate 61 is provided to facilitate the support of the sound unit, and the opening is provided on the supporting plate 61, so that the sound emitted by the sound unit can enter the front cavity 22. In addition, the supporting plate 61 is provided, and the accommodating cavity 21 of the main acoustic shell 20 can also be better divided into the front cavity 22 and the rear cavity 23, so that the sound of different frequency bands can be better selectively adjusted and processed. In addition, the opening is provided in the area corresponding to the rear end of the sound guide tube 31. When the sound unit is installed on the supporting plate 61, the sound emitted by the sound unit can better enter the sound guide tube 31. In some other embodiments, the supporting structure can also be a rib to support the sound unit.

[0047] Please also refer to Figure 2 , Figures 6 to 8 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, a sound cover 62 is installed on the support plate 61, and the sound cover 62 covers the opening. A plurality of sound outlet holes 621 are provided at the front end of the sound cover 62. The sound cover 62 can be used to accommodate and support the sound unit, that is, when the sound unit is installed, the sound unit can be installed in the sound cover 62. The sound outlet holes 621 are provided at the front end of the sound cover 62, so that the sound emitted by the sound unit can be better exported. Of course, the design of the sound outlet holes 621 can also play a role in regulating the sound. In this embodiment, the front end of the sound cover 62 is a spider web-like structure. In some other embodiments, the front end of the sound cover 62 can also be in a honeycomb grid shape, etc.

[0048] Please also refer to Figure 2 , Figures 6 to 8 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the sound cover 62 extends into the sound guide tube 31. The sound cover 62 extends into the sound guide tube 31, so that the sound emitted by the sound unit can be better guided out by the sound guide tube 31, and the sound cover 62 can also play a role in supporting and positioning the rear end of the sound guide tube 31.

[0049] Please also refer to Figure 2 , Figures 6 to 8 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, a tuning hole 611 is provided on the support plate 61 to connect the outer cavity 222 and the rear cavity 23. The tuning hole 611 is provided on the support plate 61, and the tuning hole 611 connects the outer cavity 222 and the rear cavity 23, so that the audio in the rear cavity 23 can enter the outer cavity 222 better, so as to enhance the mid-bass and improve the tuning effect.

[0050] In this embodiment, two tuning holes 611 are provided on the support plate 61. In other embodiments, more tuning holes 611 may be provided on the support plate 61, and when adapting different pronunciation units, the tuning holes 611 may be selectively closed to perform better tuning processing.

[0051] Please also refer to Figure 2 , Figures 6 to 8 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, a second sealing gasket 63 is also installed in the accommodating cavity 21, and the second sealing gasket 63 is matched and cushioned between the main acoustic shell 20 and the support plate 61. The second sealing gasket 63 can better prevent sound from leaking from between the main acoustic shell 20 and the support plate 61, and make the sound pass through the tuning hole 611 better, thereby enhancing the tuning effect.

[0052] Please also refer to Figures 5 to 11 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the main acoustic shell 20 includes a main shell structure 50 and a cover mechanism 40; an opening (not shown in the figure) is opened at the rear end of the main shell structure 50, the cover mechanism 40 covers the opening, a receiving cavity 21 is formed in the main shell structure 50, the main shell structure 50 is connected to the sound guide tube 31, and the earmuff 10 is installed at the front end of the main shell structure 50. The main shell structure 50 of this structure is easy to process and manufacture, and is also easy to assemble.

[0053] Please also refer to Figure 1 , Figure 2 and Figure 5 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the cover mechanism 40 includes a mesh plate 41 covering the opening. The mesh plate 41 is used and covers the opening at the rear end of the main shell structure 50 to set the rear cavity 23 to be open, so that the sound energy in the rear cavity 23 can be better discharged, especially part of the bass can be diffused, the bass sound pressure can be reduced, so that people can perceive a wider sense of sound space. Of course, in other embodiments, the rear cavity 23 can also be set to be closed, such as the cover mechanism 40 is provided with a sealing plate to seal the opening of the main shell structure 50.

[0054] Please also refer to Figure 1 , Figure 2 and Figure 5 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the cover blocking mechanism 40 further includes a support ring 42, the mesh plate 41 is mounted on the support ring 42, and the support ring 42 is connected to the rear end of the main shell structure 50. The support ring 42 is provided to facilitate the installation of the mesh plate 41 on the main shell structure 50.

[0055] Please also refer to Figure 1 , Figure 2 and Figure 5 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, a support block (not marked in the figure) is installed on the support ring 42, and a hinge block (not marked in the figure) is installed on the main shell structure 50, and the support block is axially connected to the hinge block. This structure facilitates the installation of the support ring 42 on the main shell structure 50, and then facilitates the mesh plate 41 to cover the opening of the main shell structure 50. In addition, this structure also facilitates the opening of the support ring 42, so as to facilitate the viewing of the structure in the rear cavity 23, and facilitate assembly and tuning. Furthermore, after the support ring 42 is installed, the support ring 42 can also be fixedly connected to the main shell structure 50 to prevent the user from disassembling it.

[0056] Please also refer to Figure 1 , Figure 2 and Figure 5 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the mesh plate 41 is covered with a dustproof cloth 43. The dustproof cloth 43 is covered on the mesh plate 41 to prevent external dust from entering the main shell structure 50.

[0057] Please also refer to Figure 1 , Figure 2 and Figure 5 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the cover mechanism 40 further includes a cloth piece 44 arranged on the inner surface of the mesh plate 41. The cloth piece 44 can protect the mesh plate 41 and is more beautiful.

[0058] Please also refer to Figure 1 , Fig.10 and Fig.11 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, a sound adjustment hole 24 connected to the front cavity 22 is provided on the main acoustic shell 20. The sound adjustment hole 24 is provided on the main acoustic shell 20, so that the air permeability of the front cavity 22 can be easily adjusted, and the sound tuning is convenient. Furthermore, two sound adjustment holes 24 are provided on the main acoustic shell 20. Furthermore, the two sound adjustment holes 24 are arranged in a front-to-back interval. Furthermore, the sound adjustment hole 24 is in a narrow mouth shape.

[0059] Please also refer to Figure 2 , Figures 5 to 11As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the main shell structure 50 includes a skeleton 51 and a shell, the skeleton 51 includes a front frame 511, a rear frame 512 and a plurality of support ribs 513 connecting the front frame 511 and the rear frame 512, the support structure is connected to the support ribs 513, the above-mentioned opening is formed in the rear frame 512, the skeleton 51 is connected to the sound guide tube 31, the earmuff 10 is installed at the front end of the main shell structure 50, and the shell is covered on the skeleton 51; specifically, the accommodating cavity 21 is located in the skeleton 51. The skeleton 51 is provided to facilitate the support of the shell and increase the strength. Further, the above-mentioned sound adjustment hole 24 is opened on the shell.

[0060] Furthermore, the skeleton 51 is trumpet-shaped, and the circumference of the rear frame 512 is smaller than the circumference of the front frame 511, so as to support the main shell structure 50 in a trumpet shape and also facilitate the diffusion of the sound emitted by the sound unit.

[0061] Please also refer to Figure 1 , Figure 2 and Figure 5 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the main shell structure 50 also includes a muffler plate 55 covering the opening, and the muffler plate 55 is located on the inner side of the mesh plate 41. The muffler plate 55 can increase damping to better adjust the bass. Further, the muffler plate 55 can be installed on the main shell structure 50.

[0062] Please also refer to Figures 6 to 10 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the main shell structure 50 also includes a plurality of tuning pieces 52 that cooperate to cover the outside of the frame 51, and each tuning piece 52 is located between the rear frame 512 and the front frame 511. Since there is a gap between two adjacent support ribs 513, the gap between the two tuning pieces 52 can connect the rear cavity 23 and the front cavity 22, and the setting of the tuning piece 52 can adjust the air permeability of the front cavity 22 and the rear cavity 23, so as to better tune, especially to adjust the mid-low frequency sound well.

[0063] Please also refer to Figures 6 to 10 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, there are four tuning pieces 52, and the four tuning pieces 52 are respectively matched to cover the outside of the frame 51. The use of four tuning pieces 52 is convenient for processing and manufacturing, and it is also convenient to adjust the air permeability; in addition, each tuning piece 52 can also be better matched with the frame 51.

[0064] Please also refer to Figure 6 , Figure 8 and Fig.11As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the skeleton 51 also includes a middle frame 514 arranged between the front frame 511 and the rear frame 512, and the middle frame 514 is connected to each support rib 513, and the middle frame 514 is connected to the support structure. The middle frame 514 is provided to increase the strength on the one hand, and to facilitate the connection of the support structure on the other hand. And when the support structure is a support plate 61, the support plate 61 and the middle frame 514 can be better sealed, so as to separate the front cavity 22 from the rear cavity 23.

[0065] Furthermore, the second sealing pad 63 is provided between the middle frame 514 and the support plate 61 to better separate the front cavity 22 from the rear cavity 23, prevent sound from leaking from between the middle frame 514 and the support plate 61, and allow the sound to pass through the tuning hole 611 better, thereby enhancing the tuning effect.

[0066] Please also refer to Figure 6 , Fig.10 and Fig.11 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, one side of the middle frame 514 is in contact with the corresponding side of the rear frame 512. This structure can make the depth of one side of the rear cavity 23 smaller than the depth of the other side, and this structure can better prevent the resonance of the rear cavity 23, and prevent the sound reflected by the cover mechanism 40 from being opposite in phase to the sound emitted by the sound unit, thereby preventing standing waves.

[0067] Please also refer to Figure 6 , Fig.10 and Fig.11 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the shell includes a front shell 53 covering the front frame 511 and a middle shell 54 covering the rear frame 512 and between the front frame 511 and the rear frame 512. The front shell 53 and the middle shell 54 are used to form the shell, which is convenient for processing and manufacturing, and also convenient for assembly.

[0068] Please also refer to Figure 6 , Fig.10 and Fig.11 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the sound adjustment hole 24 is opened on the front shell 53. Specifically, a notch 531 can be opened on the front shell 53, and when the front shell 53 is covered on the front frame 511, the sound adjustment hole 24 is formed between the two sides of the notch 531 and the two sides of the front frame 511, so as to facilitate manufacturing.

[0069] Please also refer to Figure 6 , Figure 7 and Fig.11As a specific embodiment of the earphone shell with acoustic function provided by the present invention, a support box 532 is provided inside the front shell 53, an audio socket 534 is installed in the support box 532, a cover plate 535 is covered on the support box 532, and a through hole 533 connected to the audio socket 534 is opened on the front shell 53 at a position corresponding to the socket. This structure is convenient for connecting the sound unit to the audio socket 534 after it is installed on the support structure, and then it can be conveniently connected to the wire.

[0070] Please also refer to Figure 6 , Figure 7 and Fig.11 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, a fixing box 515 for accommodating the supporting box 532 is correspondingly provided on the frame 51. The fixing box 515 can accommodate the supporting box 532 and also play a supporting role.

[0071] Please also refer to Figure 3 and Figure 4 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the earmuff 10 includes a sponge cover 11, a face skin 12 and a mesh 13. The sponge cover 11 is connected to the periphery of the front end of the main acoustic shell 20, and the face skin 12 covers the sponge cover 11 to improve the wearing comfort. The mesh 13 is installed in the sponge cover 11 to play a dustproof role. In addition, the plane where the mesh 13 is located is inclined to the plane where the front end of the sound guide tube 31 is located. This structural design can prevent the sound from being reflected by the mesh 13 to form standing waves, that is, it can play a role in preventing standing waves.

[0072] Furthermore, a positioning step 111 is provided in the sponge cover 11 to facilitate the installation and positioning of the mesh cloth 13 .

[0073] Please also refer to Figure 3 , Figure 4 and Figure 6 As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the earmuff 10 further includes a connecting ring 14, the connecting ring 14 is connected to the bottom surface of the sponge cover 11, and the connecting ring 14 is connected to the front end of the main acoustic shell 20. Further, a buckle 141 can be provided on the connecting ring 14, and a card slot 312 is provided at the front end of the main acoustic shell 20, so that the connecting ring 14 can be conveniently installed at the front end of the main acoustic shell 20. Furthermore, in this embodiment, a card slot 312 is provided on the connecting plate 311 of the sound guide tube 31, and the connecting ring 14 is connected to the connecting plate 311, which is convenient for assembly.

[0074] Please also refer to Figure 3 , Figure 4 and Figure 6As a specific embodiment of the earphone shell with acoustic function provided by the present invention, the earmuff 10 also includes a sealing pad 15, which is provided between the connecting ring 14 and the front end of the main acoustic shell 20 to increase the sealing between the periphery of the earmuff 10 and the periphery of the main acoustic shell 20. In this embodiment, the sealing pad 15 is provided between the connecting plate 311 and the front end of the main acoustic shell 20 to better seal. Furthermore, a through hole 151 is provided on the sealing pad 15 at a position corresponding to the buckle 141, so that the buckle 141 can pass through.

[0075] See also Figure 1 The embodiment of the present invention also discloses an earphone, comprising a sound unit and the earphone shell with acoustic function as described above, wherein the sound unit is mounted on a supporting structure. The earphone uses the earphone shell with acoustic function as described above, and can better acoustically process the sound emitted by the sound unit, so that the three frequencies of the sound emitted by the earphone are balanced, thereby achieving a high-fidelity effect.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An earphone shell with acoustic function, comprising a main acoustic shell with an accommodating cavity and an earmuff installed at the front end of the main acoustic shell, wherein the accommodating cavity is provided with a supporting structure for supporting a sound unit, the portion of the accommodating cavity in front of the supporting structure is a front cavity, and the portion of the accommodating cavity in the rear of the supporting structure forms a rear cavity, characterized in that: A sound guide tube is installed in the front cavity in a front-to-back penetrating shape, and the rear end of the sound guide tube surrounds the area on the supporting structure where the sound unit is installed. When the sound unit is installed on the supporting structure, the rear end of the sound guide tube surrounds the sound unit, and the sound unit is located in the area corresponding to the rear end of the sound guide tube. A connecting plate extends outward from the front end of the sound guide tube, and the connecting plate is connected to the main sound shell. The sound guide tube divides the front cavity into an inner cavity and an outer cavity. The inner cavity is formed in the area of ​​the front cavity corresponding to the inner side of the sound guide tube, and the outer cavity is formed in the area of ​​the front cavity corresponding to the outer side of the sound guide tube.

2. The earphone shell with acoustic function as claimed in claim 1, characterized in that: The sound guide is in the shape of a trumpet, and the cross-sectional area of ​​the inner cavity gradually expands from the back to the front.

3. The earphone shell with acoustic function as claimed in claim 1, characterized in that: A sound filter is installed at the front end of the sound guide tube, and the sound filter covers the front end of the inner cavity.

4. The earphone shell with acoustic function as claimed in claim 1, characterized in that: The supporting structure is a supporting plate installed in the accommodating cavity, the periphery of the supporting plate is connected to the main acoustic shell, and an opening is formed in the area of ​​the supporting plate corresponding to the rear end of the acoustic conductor.

5. The earphone shell with acoustic function as claimed in claim 4, characterized in that: A sound cover for accommodating and supporting the sound-generating unit is installed on the support plate. The sound cover covers the opening, and a plurality of sound outlet holes are opened at the front end of the sound cover.

6. The earphone shell with acoustic function according to any one of claims 1 to 5, characterized in that: The main acoustic shell comprises a main shell structure with an opening at the rear end and a cover mechanism covering the opening, the accommodating cavity is formed in the main shell structure, the main shell structure is connected to the sound conductor, and the earmuff is installed at the front end of the main shell structure.

7. The earphone shell with acoustic function as claimed in claim 6, characterized in that: The main shell structure includes a frame and an outer shell covering the frame, the frame includes a front frame, a rear frame and a plurality of support ribs connecting the front frame and the rear frame, the support structure is connected to the support ribs, the opening is formed in the rear frame, the frame is connected to the sound guide tube, and the earmuff is installed at the front end of the main shell structure.

8. The earphone shell with acoustic function as claimed in claim 7, characterized in that: The main shell structure also includes a plurality of tuning plates which are matched to cover the outer side of the frame, and each of the tuning plates is located between the rear frame and the front frame.

9. The earphone shell with acoustic function according to any one of claims 1 to 5, characterized in that: The earmuff comprises a sponge cover connected to the periphery of the front end of the main sound shell, a surface skin covering the sponge cover and a mesh installed in the sponge cover, and the plane where the mesh is located is inclined to the plane where the front end of the sound guide tube is located.

10. An earphone, comprising a sound-emitting unit, characterized in that: It also includes an earphone shell with acoustic function as described in any one of claims 1 to 9, and the sound unit is installed on the supporting structure.

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