CN215072932U

CN215072932U - Earphone tuning structure

Info

Publication number: CN215072932U
Application number: CN202121588049.5U
Authority: CN
Inventors: 刘欣
Original assignee: Beijing Edifier Technology Co Ltd
Current assignee: Beijing Edifier Technology Co Ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2021-12-07
Anticipated expiration: 2031-07-13

Abstract

The utility model discloses an earphone tuning structure, which comprises an earphone front shell, wherein the earphone front shell is provided with a mounting groove for mounting a loudspeaker and a sound outlet hole communicated with the mounting groove, one end of the sound outlet hole close to the mounting groove is provided with a first tuning net, and the other end of the sound outlet hole far away from the mounting groove is provided with a second tuning net; the inner hole wall of the sound outlet hole is further provided with a pressure relief through hole, the pressure relief through hole is located between the first tuning net and the second tuning net, and the acoustic resistances of the first tuning net, the pressure relief through hole and the second tuning net are sequentially reduced. In this embodiment, the acoustics air current in the duct mainly discharges from between the pressure release hole after the second tuning net, and only can there be less acoustics air current to flow through first tuning net, and first tuning net is equivalent to and constitutes the filter screen structure of filtering acoustics air current together, can very big reduction the impact of acoustics air current to the vibrating diaphragm of loudspeaker.

Description

Earphone tuning structure

Technical Field

The utility model relates to an earphone technical field especially relates to an earphone tuning structure.

Background

The existing earphone acoustic cavity comprises an earphone front shell, an earphone rear shell and a loudspeaker, wherein the loudspeaker is arranged between the earphone front shell and the earphone rear shell so as to divide an acoustic inner cavity formed by the earphone front shell and the earphone rear shell into a front acoustic cavity and a rear acoustic cavity.

In the in-service use process, the vibrating diaphragm of loudspeaker can be impacted to the pronunciation air current of circulation to lead to the vibrating diaphragm of loudspeaker to send the noise.

Therefore, it is desirable to design a tuning structure of an earphone to reduce the impact of the circulating sound airflow on the diaphragm of the speaker.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an earphone tuning structure solves above problem.

To achieve the purpose, the utility model adopts the following technical proposal:

the earphone tuning structure comprises an earphone front shell, wherein the earphone front shell is provided with a mounting groove for mounting a loudspeaker and a sound outlet hole communicated with the mounting groove, a first tuning net is arranged at one end, close to the mounting groove, of the sound outlet hole, and a second tuning net is arranged at the other end, far away from the mounting groove, of the sound outlet hole;

still be provided with the pressure release through-hole on the inner hole wall of sound outlet hole, the pressure release through-hole is in first tuning net with between the second tuning net, just first tuning net the pressure release through-hole with the acoustical resistance order of second tuning net reduces.

Optionally, the earphone front shell comprises a sound outlet mouth for mounting an earmuff, and the sound outlet hole penetrates through the sound outlet mouth.

Optionally, still including install in earmuff on the sound output mouth, earmuff has the cover to be located endotheca on the sound output mouth with be arranged in inserting the overcoat in the duct, the endotheca with the overcoat is connected.

Optionally, an annular clamping groove is formed in the sound outlet nozzle, the inner sleeve is provided with a mounting hole, and an annular mounting protrusion matched with the annular clamping groove is arranged in the mounting hole;

when the ear cap is arranged on the sound outlet mouth, the annular mounting bulge is sleeved on the annular clamping groove.

Optionally, the pressure relief through hole is formed at a sleeving position of the sound outlet mouth and the ear cap.

Optionally, the pressure relief through hole is Z-shaped, one end of the pressure relief through hole is communicated with the sound outlet hole, and the other end of the pressure relief through hole is communicated with the outside.

Optionally, a speaker is installed in the installation groove, and a diaphragm of the speaker faces the sound outlet hole.

Optionally, a tuning cavity is arranged between the first tuning net and the mounting groove, the tuning cavity is a cavity body gradually reduced towards the sound outlet hole, and the cavity wall of the tuning cavity is in smooth transition.

Compared with the prior art, the utility model discloses following beneficial effect has:

in this embodiment, one end of the sound outlet hole on the front shell of the earphone is provided with a first tuning net, the other end of the sound outlet hole is provided with a second tuning net, a pressure relief hole is arranged between the first tuning net and the second tuning net, and the acoustic resistances of the first tuning net, the pressure relief hole and the second tuning net are sequentially reduced; in the in-service use process, the acoustics air current in the duct mainly discharges from between the pressure release hole after the second tuning net, only can have less acoustics air current to flow through first tuning net, and first tuning net is equivalent to and constitutes the filter screen structure of filtering acoustics air current together, very big reduction the impact of acoustics air current to the vibrating diaphragm of loudspeaker.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

The structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the achievable purpose.

Fig. 1 is a schematic view of an earphone tuning structure provided by an embodiment of the present invention;

FIG. 2 is a schematic sectional view taken along line B-B in FIG. 1;

fig. 3 is an explosion schematic view of the tuning structure of the earphone provided by the embodiment of the present invention;

fig. 4 is a schematic sectional view taken along line a-a in fig. 2.

Illustration of the drawings: 1. an earphone front shell; 11. mounting grooves; 12. a sound outlet hole; 13. a pressure relief through hole; 14. a sound outlet mouth; 141. an annular neck; 15. a tuning cavity; 2. a first tuning net; 3. a second tuning net; 4. ear cap; 41. an inner sleeve; 42. a jacket; 5. and (5) mounting a horn.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The embodiment of the utility model provides an earphone tuning structure, shell 1 before the earphone, shell 1 is provided with the play sound hole 12 that is used for installing the mounting groove 11 of loudspeaker 5 and intercommunication mounting groove 11 before the earphone, and the one end that goes out sound hole 12 and be close to mounting groove 11 is provided with first tuning net 2, and the other end that goes out sound hole 12 and keep away from mounting groove 11 is provided with second tuning net 3. It should be noted that the first tuning net 2 covers one end of the sound outlet hole 12, and the second tuning net 3 covers the other end of the sound outlet hole 12.

The inner hole wall of the sound outlet hole 12 is further provided with a pressure relief through hole 13, the pressure relief through hole 13 is located between the first tuning net 2 and the second tuning net 3, and the resistance of the first tuning net 2, the pressure relief through hole 13 and the second tuning net 3 to the sound production airflow is reduced in sequence.

Specifically, in the actual use process, when the horn 5 produces sound, the sound is mainly output from the second sound-producing net 3 because the resistance of the second sound-producing net 3 to the circulating sound-producing airflow is minimum; when wearing the earphone, the sound production air current of circulation in the external auditory canal can pass through second tuning net 3, then mainly discharges from pressure release through-hole 13, has reduced the impact of the sound production air current of circulation to the vibrating diaphragm of loudspeaker 5, makes loudspeaker 5's sound quality better.

In addition, first tuning net 2 and second tuning net 3 constitute twice tuning structure, can not only filter the produced miscellaneous sound of loudspeaker 5 more effectively, obtain balanced sound output, have promoted loudspeaker 5's tone quality, can effectively filter the impact of sound production air current moreover, avoid the sound production air current to produce too big impact to loudspeaker 5's vibrating diaphragm. It should be noted that the first tuning net 2 and the second tuning net 3 are both porous structures, and the pore diameter of the first tuning net 2 is smaller than that of the second tuning net 3.

Optionally, the front shell 1 of the headset comprises a sound outlet mouth 14 for mounting an earcap, the sound outlet hole 12 extending through the sound outlet mouth 14. Specifically, the earphone front case 1 outputs sound mainly through the mouthpiece 14. In addition, the sound outlet 14 is arranged in a protruding mode, and the pressure relief through hole 13 is more conveniently machined in the sound outlet.

Optionally, the earphone tuning structure further comprises an ear muff 4 mounted on the sound outlet 14, the ear muff 4 has an inner casing 41 sleeved on the sound outlet 14 and an outer casing 42 for being plugged into the external auditory canal, and the inner casing 41 and the outer casing 42 are connected.

In particular, the ear muff 4 is mainly used to form a relatively sealed space in the external auditory canal, so as to reduce the influence of external noise on the sound emitted from the earphone.

Optionally, an annular clamping groove 141 is formed in the sound outlet nozzle 14, the inner sleeve 41 has a mounting hole, and an annular mounting protrusion matched with the annular clamping groove 141 is formed in the mounting hole; when the ear cap 4 is mounted on the sound outlet 14, the annular mounting protrusion is sleeved on the annular clamping groove 141.

Specifically, the ear muff 4 is detachably fitted over the mouthpiece 14 and securely connected by the annular fitting protrusion and the annular catching groove 141.

Alternatively, the pressure relief through hole 13 is formed at the fitting position of the mouthpiece 14 and the ear muff 4.

Specifically, the sound outlet mouth 14 and the ear cap 4 form a pressure relief through hole 13; it should be understood that the sound outlet 14 and the ear cap can be assembled to form the complete pressure relief through hole 13, which can effectively reduce the difficulty of processing the pressure relief through hole 13.

Optionally, the pressure relief through hole 13 is substantially Z-shaped, one end of the pressure relief through hole 13 is communicated with the sound outlet hole 12, and the other end is communicated with the outside.

Specifically, in order to make the pressure relief through hole 13 have a preset acoustic resistance, it is provided as a through hole having two turns. It should be noted that the hole diameter of the pressure relief through hole 13 should be set according to the specific situation.

Optionally, a loudspeaker 5 is installed in the installation groove 11, and in order to improve the sound production effect of the loudspeaker, a vibrating diaphragm of the loudspeaker 5 is over against the sound outlet hole 12.

Optionally, a tuning cavity 15 is further disposed between the first tuning net 2 and the mounting groove 11, the tuning cavity 15 is a cavity that gradually decreases towards the sound outlet hole 12, and a cavity wall of the tuning cavity 15 is in smooth transition. It will be appreciated that the tuning chamber is arranged to provide a reverberation effect on the sound emitted by the horn 5, making the sound of the horn more pleasant.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The tuning structure of the earphone is characterized by comprising a front casing (1) of the earphone, wherein the front casing (1) of the earphone is provided with a mounting groove (11) for mounting a loudspeaker (5) and a sound outlet hole (12) communicated with the mounting groove (11), one end, close to the mounting groove (11), of the sound outlet hole (12) is provided with a first tuning net (2), and the other end, far away from the mounting groove (11), of the sound outlet hole (12) is provided with a second tuning net (3);

still be provided with pressure release through-hole (13) on the inner hole wall of sound outlet hole (12), pressure release through-hole (13) are in between first tuning net (2) and second tuning net (3), just first tuning net (2) pressure release through-hole (13) with the acoustic resistance order of second tuning net (3) reduces.

2. The earphone tuning structure according to claim 1, characterized in that the earphone front shell (1) comprises a sound outlet nozzle (14) for mounting an earcap, and the sound outlet hole (12) penetrates through the sound outlet nozzle (14).

3. The earphone tuning structure according to claim 2, further comprising an ear cover (4) mounted on the mouthpiece (14), the ear cover (4) having an inner cover (41) fitted over the mouthpiece (14) and an outer cover (42) for insertion into an ear canal, the inner cover (41) and the outer cover (42) being connected.

4. The earphone tuning structure according to claim 3, wherein the sound outlet nozzle (14) is provided with an annular clamping groove (141), the inner sleeve (41) is provided with a mounting hole, and an annular mounting protrusion matched with the annular clamping groove (141) is arranged in the mounting hole;

when the ear muffs (4) are arranged on the sound outlet mouth (14), the annular mounting bulge is sleeved on the annular clamping groove (141).

5. The earphone tuning structure according to claim 3, wherein the pressure relief through hole (13) is formed at a socket position of the mouthpiece (14) and the earmuff (4).

6. The earphone tuning structure according to claim 3, wherein the pressure relief through hole (13) is Z-shaped, one end of the pressure relief through hole (13) is communicated with the sound outlet hole (12), and the other end of the pressure relief through hole is communicated with the outside.

7. The earphone tuning structure according to claim 1, wherein a speaker (5) is installed in the installation groove (11), and a diaphragm of the speaker (5) faces the sound outlet hole (12).

8. The earphone tuning structure according to claim 1, wherein a tuning cavity (15) is arranged between the first tuning net (2) and the mounting groove (11), the tuning cavity (15) is a cavity which is gradually reduced towards the sound outlet hole (12), and the cavity wall of the tuning cavity (15) is in smooth transition.