CN219761273U - Adjustable earphone - Google Patents

Abstract

The utility model discloses a tunable earphone which comprises an earphone structure and an ear rod, wherein the earphone structure comprises a shell, a loudspeaker and a tuning hole, the ear rod comprises a rod body, a tuning piece and an audio line, the loudspeaker is arranged in the shell, a resonant cavity is formed between the loudspeaker and the shell, a first connecting part is arranged on the outer side of the shell, the tuning hole is arranged on the first connecting part in a penetrating mode, the tuning hole penetrates through the shell and is communicated with the resonant cavity, a second connecting part is arranged on the outer side of the rod body, the tuning piece is arranged on the second connecting part, the first connecting part and the second connecting part are rotatably arranged, the tuning hole of the first connecting part is arranged on a rotating path of the tuning piece of the second connecting part, one end of the audio line penetrates through the first connecting part and the second connecting part from the rod body, and one end of the audio line is electrically connected with the loudspeaker. According to the utility model, the relative position between the tuning sheet and the tuning hole is changed by rotating the ear rod, and the tuning sheet is opened or covers the tuning hole to change the air pressure in the resonant cavity, so that the purpose of changing the sound frequency is achieved.

Description

Adjustable earphone

Technical Field

The utility model relates to an earphone, in particular to a tunable earphone.

Background

In the prior art, the application of headphones is becoming more popular, and the tone and the listening feeling of music or sound played through the headphones are fixed, but the headphones cannot meet the requirements of everyone on the tone. In view of the above problems, although the tone color of the earphone can be changed by adjusting the electronic signal of the audio, the electronic signal may cause distortion of the sound, resulting in a problem of reduced sound quality.

Disclosure of Invention

The utility model provides a tunable earphone which can solve the problem that the existing electronic signal is adjusted to possibly cause the distortion of sound played by the earphone.

To achieve the above object, the present utility model provides a tunable earphone, comprising: the earphone structure comprises a shell, a loudspeaker and a tuning hole, wherein the loudspeaker is arranged in the shell, a resonant cavity is formed between the loudspeaker and the shell, a first connecting part is arranged on the outer side of the shell, the tuning hole is positioned in the first connecting part, the shell is penetrated through the tuning hole, and the tuning hole is communicated with the resonant cavity. The utility model provides an earstem, includes body of rod, tuning piece and audio line, and the outside of body of rod has second connecting portion, and the tuning piece sets up in second connecting portion, and first connecting portion rotates with second connecting portion and sets up, and the tuning hole of first connecting portion is located the rotation route of tuning piece of second connecting portion, and the one end of audio line wears to establish first connecting portion and second connecting portion in the body of rod, the one end electric connection speaker of audio line.

In one embodiment, the first connecting portion comprises an annular groove, the tuning hole is located at the bottom of the annular groove, the first connecting portion is connected with the second connecting portion, and the tuning piece is located in the annular groove, wherein the tuning hole is one or more.

In one embodiment, the first connecting portion includes a through hole, the through hole penetrates through the shell and is communicated with the resonant cavity, the through hole is located in the annular groove, the second connecting portion includes a buckle assembly, the buckle assembly is located on the periphery of the audio line, one end of the buckle assembly penetrates through the through hole, and one end of the buckle assembly is clamped on the side wall of the orifice, located on the inner side of the shell, of the through hole.

In one embodiment, the ear rod further comprises a stop ring, the stop ring is sleeved on the buckle assembly, the periphery of the through hole further comprises a limiting notch, and the stop ring is embedded in the limiting notch.

In one embodiment, the first connecting portion further includes a limiting component, the limiting component includes a first limiting member and a second limiting member, the first limiting member and the second limiting member are disposed in the annular groove, the fastening component further includes a first stopping member and a second stopping member, the first stopping member and the second stopping member are located at two ends of the tuning piece, the first stopping member is adjacent to one side with the first limiting member, and the second stopping member is adjacent to one side with the second limiting member.

In one embodiment, the fastening component is provided with a column body and a fastening lug, the fastening lug extends outwards from the circumferential side of one end of the column body, the column body is provided with a through hole in a penetrating mode, and the fastening lug is fastened on the side wall of the hole opening of the inner side of the shell.

In one embodiment, the first stop member abuts against the first limiting member, the tuning piece completely covers the tuning hole, the second connection portion rotates relative to the first connection portion, the second connection portion drives the first stop member and the second stop member to rotate, the second stop member moves towards the second limiting member, the tuning piece gradually opens the tuning hole, the second stop member abuts against the second limiting member, and the tuning piece completely opens the tuning hole.

In one embodiment, the tuning piece is of an arc-shaped structure, the rotation path of the tuning piece is between the first limiting piece and the second limiting piece in the annular groove, and the arc edge length of the tuning piece is smaller than the path length of the rotation path of the tuning piece.

In one embodiment, the buckle assembly further comprises a third stop member, the third stop member is located between the first stop member and the second stop member in the annular groove without the first stop member and the second stop member, wherein the first stop member abuts against the first stop member, and then the third stop member abuts against the second stop member; or the second stop piece is propped against the second limiting piece, and the third stop piece is propped against the first limiting piece.

In one embodiment, the inside of the housing has a dust screen that covers the tuning hole.

In one embodiment, the outer side of the shell is further provided with a first positioning mark, the first positioning mark is located at one side of the first connecting portion, the outer side of the rod body is provided with a second positioning mark, the second positioning mark is located at one side of the second connecting portion, the second connecting portion rotates relative to the first connecting portion, and then the second positioning mark corresponds to the first positioning mark.

The utility model provides a tunable earphone, which changes the relative position of a second connecting part relative to a first connecting part by rotating an ear rod, adjusts the relative position between a tuning sheet and a tuning hole, and changes the air pressure in a resonant cavity by opening or covering the tuning sheet so as to achieve the purpose of changing the sound frequency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic diagram of a toneable earphone of the present utility model;

FIG. 2 is an exploded perspective view of the toneable headphones of the present utility model;

FIG. 3 is a cross-sectional view of line A-A' of FIG. 1;

FIG. 4 is another schematic diagram of the toneable headphones of the present utility model;

FIG. 5 is a cross-sectional view taken along line C-C' of FIG. 4;

FIG. 6 is another operational schematic of FIG. 5;

FIG. 7 is a further schematic illustration of the operation of FIG. 5;

FIG. 8 is another cross-sectional view of the segment C-C' of FIG. 4; and

fig. 9 is a cross-sectional view of line B-B' of fig. 2.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In this embodiment, as shown in fig. 1, 2 and 3, and fig. 3 is a cross-sectional view of line A-A' in fig. 1, the toneable earphone 10 includes: the earphone structure 20 and the ear stem 30. Wherein the earphone structure 20 comprises a housing 21, a speaker 22 and a tuning hole 23. The ear lever 30 includes a lever body 31, a tuning piece 32, and an audio line 33. The speaker 22 is disposed in the housing 21, and a resonant cavity 24 is formed between the speaker 22 and the housing 21. The outside of casing 21 has first connecting portion 211, and tuning hole 23 is located first connecting portion 211, and casing 21 is worn to establish to tuning hole 23, and tuning hole 23 intercommunication resonant cavity 24, resonant cavity 24 communicate with the external world through tuning hole 23. The outer side of the rod body 31 has a second connection portion 311, and the tuning piece 32 is provided at the second connection portion 311. The first connecting portion 211 and the second connecting portion 311 are rotatably disposed. The tuning hole 23 of the first coupling portion 211 is located on the rotational path of the tuning sheet 32 of the second coupling portion 311. One end of the audio line 33 is inserted through the first connecting portion 211 and the second connecting portion 311 from the rod 31, and one end of the audio line 33 is electrically connected to the speaker 22.

As described above, the first connection portion 211 includes the annular groove 2111 and the through hole 2112, the tuning hole 23 is located at the bottom of the annular groove 2111, the through hole 2112 penetrates the housing 21 and communicates with the resonant cavity 24, the through hole 2112 is located inside the annular groove 2111, that is, the annular groove 2111 is disposed around the through hole 2112. Wherein the tuning holes 23 are one or more. When the tuning holes 23 are plural, the tuning holes 23 are arranged in an arc shape corresponding to the bottoms of the annular grooves 2111, the audio line 33 passes through the through holes 2112, and the audio line 33 passes through the resonant cavity 24 and is connected to the speaker 22.

In addition, the earphone structure 20 further includes a front sound cavity 25, the front sound cavity 25 is a sound outlet communicated with the housing 21, the front sound cavity 25 is communicated with a resonance cavity 24, the speaker 22 is located between the resonance cavity 24 and the front sound cavity 25, and the resonance cavity 24 is located at one side of the housing 21. The speaker 22 emits sound by vibration, and the sound and the resonance chamber 24 resonate with each other to generate sound, and the sound passing through the resonance effect is emitted through the front sound chamber 25. The user delivers sound into the ear through the front sound chamber 25. The first connecting portion 211 includes a limiting component 2113, the limiting component 2113 further includes a first limiting component 2114 and a second limiting component 2115, and the first limiting component 2114 and the second limiting component 2115 are disposed in the annular groove 2111. One ends of the first limiting piece 2114 and the second limiting piece 2115 extend from the groove wall of the annular groove 2111 towards the direction of the through hole 2112, and the other ends of the first limiting piece 2114 and the second limiting piece 2115 are connected with the groove wall of the annular groove 2111. The second connection portion 311 includes a clip assembly 3111, the clip assembly 3111 is located on a peripheral side of the audio line 33, the clip assembly 3111 further includes a first stopper 3112 and a second stopper 3113, the first stopper 3112 and the second stopper 3113 are located at two ends of the tuning sheet 32, the first stopper 3112 is adjacent to the side with the first stopper 2114, and the second stopper 3113 is adjacent to the side with the second stopper 2115.

In this embodiment, the latch assembly 3111 further includes a third stopper 3114, the third stopper 3114 is located between the first stopper 2114 and the second stopper 2115 in the annular groove 2111 without the first stopper 3112 and the second stopper 3113, wherein the first stopper 3112 abuts the first stopper 2114, and the third stopper 3114 abuts the second stopper 2115; or the second stopper 3113 abuts the second stopper 2115, the third stopper 3114 abuts the first stopper 2114. Wherein the first stopper 3112, the second stopper 3113 and the third stopper 3114 protrude perpendicularly outward from the side face of the column 3111A.

The first connecting portion 211 and the second connecting portion 311 are rotatably disposed, the tuning hole 23 of the first connecting portion 211 is located in the annular groove 2111, the tuning piece 32 is attached to the bottom of the annular groove 2111, the tuning piece 32 moves at the bottom of the annular groove 2111, and the tuning hole 23 is located on the rotation path of the tuning piece 32 of the second connecting portion 311, in other words, the annular groove 2111 is the rotation path of the tuning piece 32. The tuning sheet 32 is moved to the surface having the tuning hole 23 to cover the tuning hole 23; or the tuning sheet 32 is away from the surface having the tuning hole 23 to open the tuning hole 23.

As shown in fig. 4 and 5, and fig. 5 is a sectional view of line C-C' of fig. 4, a user rotates the second connection part 311 by rotating the ear lever 30, and the tuning piece 32 moves along the rotation path, and the tuning piece 32 can gradually open the number of tuning holes 23, and the air in the resonance cavity 24 is convected with the air from the outside by adjusting the number of opening tuning holes 23, so as to change the air pressure in the resonance cavity 24. The first stopper 3112 abuts against the first stopper 2114, and the tuning piece 32 completely covers the tuning hole 23, and the air pressure in the resonance chamber 24 does not change in the case where the speaker 22 is not operated. As the diaphragm of speaker 22 vibrates within housing 21, the diaphragm of speaker 22 continuously compresses and expands the air in resonant cavity 24. When the diaphragm of the speaker 22 vibrates toward the resonant cavity 24, the magnitude of the vibration amplitude and the speed of the vibration frequency of the diaphragm of the speaker 22 are affected by the air pressure extrusion in the resonant cavity 24, and the air pressure of the resonant cavity 24 is the first air pressure; since the resonant cavity 24 is relatively sealed, it will produce a first change in the mode or amplitude of vibration of the diaphragm of the speaker 22, resulting in a first tuning effect.

As shown in fig. 6, and fig. 6 is another operation schematic diagram of fig. 5, the second connecting portion 311 drives the first stopper 3112 and the second stopper 3113 to rotate, and the second stopper 3113 moves toward the second stopper 2115, so that the tuning piece 32 gradually opens the tuning hole 23. In the case of a loudspeaker 22 not in operation, the air pressure in the resonant cavity 24 likewise does not change. When the diaphragm of the speaker 22 vibrates in the housing 21, the diaphragm of the speaker 22 continuously compresses and expands the air in the resonant cavity 24, but since some of the tuning holes 23 are not covered by the tuning sheet 32, the air in the resonant cavity 24 can be convected to the air from the outside through the uncovered tuning holes 23. When the vibration amplitude and the vibration frequency of the diaphragm of the speaker 22 are affected by the air pressure extrusion during the vibration of the diaphragm of the speaker 22 toward the resonant cavity 24, the air pressure in the resonant cavity 24 is lower than that in the relatively sealed resonant cavity 24, and the air pressure is the second air pressure. Since the resonant cavity 24 is relatively moderately open, it will produce a second change in the mode or amplitude of vibration of the speaker 22, resulting in a second tuning effect.

As shown in fig. 7, and fig. 7 is a schematic diagram of still another operation of fig. 5, the second stopper 3113 abuts against the second stopper 2115, so that the tuning piece 32 completely opens the tuning hole 23, and further increases the convection amount of air in the resonant cavity 24 and air from the outside, so that when the vibrating diaphragm of the speaker 22 vibrates toward the resonant cavity 24, the vibration amplitude and the vibration frequency of the vibrating diaphragm of the speaker 22 are affected by the extrusion of air pressure, the air pressure in the resonant cavity 24 drops again, and at this time, the air pressure is the third air pressure, the first air pressure is greater than the second air pressure, and the second air pressure is greater than the third air pressure. Since the resonant cavity 24 is relatively highly open, it will produce a third change in the mode or amplitude of vibration of the speaker 22, resulting in a third tuning effect.

The above-mentioned fig. 5, 6 and 7 and the related description mainly illustrate three states, but are not limited thereto. In some embodiments, according to how many tuning holes 23 are not covered by the tuning sheet 32 or are covered by the tuning sheet 32 entirely, that is, when the speaker 22 vibrates in the housing 21, air in the resonant cavity 24 can be convected with air from the outside through how many tuning holes 23, which affects a change in air pressure in the resonant cavity 24 or a change in air exchange amount with the outside, which can generate a corresponding change in a vibration mode or a vibration amplitude of the speaker 22, so that a resonant frequency can be adjusted, resulting in a corresponding tuning effect. In some embodiments, the frequency response of the medium and low frequencies of the speaker 22 may be primarily changed depending on how many tuning holes 23 are uncovered by the tuning sheet 32 or are fully covered by the tuning sheet 32.

In addition, the above-mentioned sound variation of the speaker 22 not only adjusts the air pressure of the resonant cavity 24 through the tuning hole 23, and further changes the vibration amplitude and the vibration frequency of the diaphragm of the speaker 22, but also the speaker 22 further includes a front sound cavity 25, and the front sound cavity 25 can also adjust the vibration amplitude and the vibration frequency of the diaphragm of the speaker 22, and further adjust the tone of the middle and low frequencies of the speaker 22.

In this embodiment, referring to fig. 2 again, the ear rod 30 further includes a stopper ring 34, the stopper ring 34 is made of soft rubber, the circumferential side of the through hole 2112 further includes a limiting recess 2116, the stopper ring 34 is embedded in the limiting recess 2116, the stopper ring 34 is sleeved with a clip assembly 3111, the tuning piece 32 is located at one side of the stopper ring 34, the stopper ring 34 is located at the inner side of the annular groove 2111, and the second connecting portion 311 drives the stopper ring 34 to rotate. The stopper ring 34 is provided with a plurality of notches corresponding to the first stopper 3112, the second stopper 3113 and the third stopper 3114, and the stopper ring 34 is fitted to the first stopper 3112, the second stopper 3113 and the third stopper 3114.

When the user rotates the ear lever 30 to adjust the position of the tuning sheet 32, the force applied by the user to rotate the second connecting portion 311 is greater than the friction force between the stopper ring 34 and the restriction recess 2116. When the second connection portion 311 stops rotating, the user does not apply force to the second connection portion 311 any more, the friction force of the stopper ring 34 with respect to the limiting recess 2116 can prevent any rotation of the second connection portion 311, in other words, fix the position of the ear post 30 with respect to the earphone structure 20, i.e., fix the state where the tuning piece 32 covers the tuning hole 23.

In this embodiment, the latch assembly 3111 protrudes from the outer side of the rod 31, the latch assembly 3111 includes a column 3111A and a plurality of latch projections 3111B, the plurality of latch projections 3111B extend outwardly from one end of the column 3111A, the plurality of latch projections 3111B protrude from the outer side of the column 3111A, the protruding directions of the plurality of latch projections 3111B are parallel to the rod 31, the other end of the column 3111A is disposed vertically on the outer side of the rod 31, and one side of the plurality of latch projections 3111B is located between the tuning piece 32 and the audio line 33. One end of the buckle assembly 3111 is inserted through the through hole 2112, and the column 3111A is passed through the through hole 2112, and a plurality of buckle protrusions 3111B are fastened to the side walls of the hole of the through hole 2112.

Further, when the buckle assembly 3111 passes through the through hole 2112, the plurality of buckle protrusions 3111B of the buckle assembly 3111 are tapered and smaller than the aperture size of the through hole 2112 due to the influence of external force, the plurality of buckle protrusions 3111B pass through the through hole 2112 in a compressed state, after the plurality of buckle protrusions 3111B of the buckle assembly 3111 enter the inner side of the housing 21, the plurality of buckle protrusions 3111B of the buckle assembly 3111 are not influenced by external force, and then the plurality of buckle protrusions 3111B gradually expand and snap on the aperture side wall of the through hole 2112.

In the present embodiment, the first connection portion 211 is concavely disposed from the outside of the earphone structure 20, the second connection portion 311 is convexly disposed from the outside of the ear stem 30, wherein the speaker 22 is located at one side in the housing 21, the tuning hole 23 is located at the other side of the housing 21, and the resonant cavity 24 is located between the speaker 22 and the tuning hole 23. Wherein the tuning piece 32 is of an arc-shaped structure, the tuning piece 32 protrudes from the outer side of the rod body 31, the tuning piece 32 is located at one side of the audio line 33, a rotation path of the tuning piece 32 is located between the first limiting part 2114 and the second limiting part 2115 in the annular groove 2111, and the arc edge length of the tuning piece 32 is smaller than the path length of the rotation path of the tuning piece 32. In addition, the outer surface of the rod 31 further has a protection layer 35, the protection layer 35 is coated on the outer surface of the rod 31 by injection molding (as shown in fig. 3), and the fastening component 3111 is inserted through the protection layer 35, and the protection layer 35 can protect the outer surface of the rod 31. Meanwhile, the tuning piece 32 located on the surface of the rod body 31 may be further manufactured together by injection molding, that is, the protective layer 35 and the tuning piece 32 are integrally formed.

Referring back to fig. 1, the outer side of the housing 21 further has a first positioning mark 212, the outer side of the rod 31 has a second positioning mark 312, the second positioning mark 312 is located at one side of the second connecting portion 311, the second positioning mark 312 rotates corresponding to the second connecting portion 311, the first positioning mark 212 is located at one side of the first connecting portion 211, and the first positioning mark 212 has a plurality of first positioning marks 212, each of which corresponds to a different number of tuning holes 23.

When the ear rod 30 is rotated, the second positioning mark 312 is matched with the tuning piece 32 of the second connecting part 311 to cover the tuning holes 23, and the second positioning mark 312 corresponds to different first positioning marks 212 to cover different numbers of tuning holes 23 by the tuning piece 32.

As shown in fig. 8, and fig. 8 is another cross-sectional view of line C-C' of fig. 4, in another embodiment, the tuning holes 23 may be provided as elongated arc-shaped holes, and the arcs Kong Dongchuan are provided at the bottoms of the annular grooves 2111. The tuning piece 32 can completely cover the tuning hole 23, the tuning piece 32 can also be moved to different positions to open the orifice of the tuning hole 23, the size of the orifice uncovered by the tuning piece 32 is changed, and the air in the resonant cavity 24 and the air outside are caused to be convected by adjusting the length of the arc edge of the tuning hole 23, so that the air pressure in the resonant cavity 24 is changed. Further, the second positioning marks 312 correspond to the first positioning marks 212, so that the tuning sheet 32 covers the openings of the tuning holes 23 with different sizes.

As shown in fig. 9, and fig. 9 is a cross-sectional view of line B-B' in fig. 2, the inside of the housing 21 has a dust-proof net 213, the dust-proof net 213 covers the tuning hole 23, the dust-proof net 213 has a ring-shaped structure, the external dimension of the dust-proof net 213 corresponds to the ring-shaped groove 2111, and the dust-proof net 213 prevents foreign matters from entering the inside of the housing 21 through the tuning hole 23, so as to prevent dust and foreign matters from accumulating on the inside of the housing 21, causing a short circuit of the audio line 33 or reducing the vibration amplitude of the speaker 22, which causes a change in the vibration frequency.

In summary, including casing, speaker and resonant cavity in the earphone structure, the earstem includes the body of rod, tuning piece and audio line, the outside of casing has first connecting portion, the outside of the body of rod has second connecting portion, make the speaker actuate through the audio line, produce sound in the earphone structure, change the relative position between second connecting portion for first connecting portion through rotating the earstem, adjust the relative position between tuning piece and the tuning hole, and open or cover the tuning hole through the tuning piece, with the air pressure in the change resonant cavity or with external air exchange volume, reach the purpose of changing sound frequency.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative, not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are to be protected by the present utility model.

Claims (11)

1. A toneable earphone, comprising:

the earphone structure comprises a shell, a loudspeaker and a tuning hole, wherein the loudspeaker is arranged in the shell, a resonant cavity is formed between the loudspeaker and the shell, a first connecting part is arranged on the outer side of the shell, the tuning hole is positioned in the first connecting part, the tuning hole penetrates through the shell, and the tuning hole is communicated with the resonant cavity; and

the utility model provides an earstem, includes body of rod, tuning piece and audio line, the outside of body of rod has second connecting portion, the tuning piece set up in second connecting portion, first connecting portion with second connecting portion rotate and set up, first connecting portion the tuning hole is located on the rotation route of tuning piece of second connecting portion, the tuning piece is configured to rotate to cover or not the tuning hole, the one end of audio line is followed wear to establish in the body of rod first connecting portion with second connecting portion, the one end electric connection of audio line the speaker.

2. The toneable earphone of claim 1, wherein the first connection portion comprises an annular groove, the tuning hole is located at a bottom of the annular groove, the first connection portion is connected to the second connection portion, and the tuning tab is located in the annular groove, wherein the tuning hole is one or more.

3. The toneable headphones of claim 2, wherein the first connection portion includes a through hole penetrating the housing and communicating with the resonant cavity, the annular groove surrounds the through hole, the second connection portion includes a clip assembly located on a peripheral side of the audio line, one end of the clip assembly penetrates the through hole, and one end of the clip assembly is clipped to an orifice side wall of the through hole located on an inner side of the housing.

4. The toneable headphones of claim 3, wherein the ear stem further comprises a stop ring, the stop ring being disposed around the clip assembly, the through hole peripheral side further comprising a limiting recess, the stop ring being engaged with the limiting recess.

5. The toneable headphones of claim 4, wherein the snap assembly has a post and a snap tab, the snap tab extending outwardly from a peripheral side of one end of the post, the post passing through the through hole, the snap tab snap engaging an aperture sidewall of the through hole inside the housing.

6. The toneable headphones of claim 2, wherein the first connection portion further comprises a spacing assembly comprising a first spacing member and a second spacing member disposed within the annular recess, the second connection portion comprising a snap assembly further comprising a first stop member and a second stop member disposed at opposite ends of the tuning blade, wherein the first stop member is adjacent to a side having the first spacing member, and the second stop member is adjacent to a side having the second spacing member.

7. The toneable headphones of claim 6, wherein the first stop abuts the first stop, the tuning piece completely covers the tuning hole, wherein the second connection is configured such that when the second connection is rotated relative to the first connection, the second connection rotates the first stop with the second stop, the second stop moves toward the second stop, the tuning piece gradually opens the tuning hole, and the second stop abuts the second stop, the tuning piece completely opens the tuning hole.

8. The toneable headphones of claim 7, wherein the tuning sheet has an arcuate configuration, the rotational path of the tuning sheet being between the first and second stop members within the annular groove, the arcuate edge of the tuning sheet having a path length less than the rotational path of the tuning sheet.

9. The toneable earphone of claim 8, wherein the clasp assembly further comprises a third stop located between the first and second stops within the annular recess without the first and second stops, wherein the first stop abuts the first stop and the third stop abuts the second stop; or the second stop piece is propped against the second limiting piece, and then the third stop piece is propped against the first limiting piece.

10. The toneable earphone of claim 1, wherein an inner side of the housing has a dust screen covering the tuning hole.

11. The toneable headphones of claim 1, wherein the housing further has a first locating identifier on an outer side thereof, the first locating identifier being located on one side of the first connection portion, the lever having a second locating identifier on an outer side thereof, the second locating identifier being located on one side thereof, the second connection portion being rotated relative to the first connection portion, the second locating identifier corresponding to the first locating identifier.