CN219627880U - Air conduction earphone with double sound outlet holes - Google Patents

Abstract

The utility model relates to the technical field of earphones, in particular to an air conduction earphone with double sound outlet holes, which comprises: the sound generating device comprises a main shell, a sound generating device, a first sound outlet and a second sound outlet, wherein the main shell comprises a first shell, a second shell and a cavity between the first shell and the second shell, and the sound generating device is located in the first accommodating cavity. The air conduction earphone of the utility model does not need to be arranged in the ear, and the sound outlet position can be tightly pressed with the human auditory canal position by utilizing the wearing mode of combining the ear hook and the main shell, so that the air conduction earphone can be normally used without being in the ear, can avoid dirt and can not cause the problem of ear pain when wearing the earphone for a long time. The utility model can prevent the sound wave from generating the sound short circuit by arranging the two sound outlet holes, and can compensate the low frequency part of the sound wave, extend the high frequency part of the sound wave and improve the low frequency performance of the sound wave.

Description

Air conduction earphone with double sound outlet holes

Technical Field

The utility model relates to the technical field of earphones, in particular to an air conduction earphone with double sound outlet holes.

Background

The headphones are a pair of conversion units that receive the electrical signals from the media player or receiver and convert them to audible sound waves using a speaker positioned proximate the ear.

In the prior art, according to the difference of wearing mode, traditional earphone divide into in-ear earphone and earmuff earphone, and wherein in-ear earphone need insert in the person's ear canal when using, in-ear earphone wears back ear for a long time and can appear painful sense, breeds the bacterium easily, influences the ear canal health, in addition, because the direct mode of propagating forward in the ear canal of sound, will bear stethoscope effect, causes the ear discomfort easily to there is in-head effect, and the sense of hearing is unnatural, lacks the space sense. The earmuff type earphone does not need to be inserted into the auditory canal of a wearer, but needs to cover the whole auricle, so that the earmuff type earphone needs to squeeze the auricle when in use, so as to ensure that emitted sound can be transmitted into the auditory canal as much as possible, and the earmuff type earphone also has disadvantages after long-term use, such as discomfort of the auricle.

In order to overcome the defects of the traditional earphone, an air-guide earphone is arranged, an earphone head of the air-guide earphone is worn outside an concha cavity, and sound emitted by the earphone positioned outside an external auditory canal is conducted into the auditory canal from the outside of an external auditory meatus through a directional sound guide hole. However, the above-mentioned earphone generally has problems such as poor bass effect and insufficient sound permeability.

Disclosure of Invention

The present utility model is directed to an air conduction earphone with dual sound outlets, which at least solves one of the problems set forth in the background art.

The technical scheme of the utility model is as follows:

an air conduction earphone with double sound outlets, comprising:

the main shell comprises a first shell and a second shell, a cavity is formed between the first shell and the second shell, and the cavity comprises a first accommodating cavity and a second rear sound cavity;

the sound generating device is positioned in the first accommodating cavity, the front surface of the sound generating device is provided with a sound generating surface, the sound generating surface is close to the first shell, and the outer wall surface of the first shell is attached to the ears of a human body;

the first sound outlet is arranged on the first shell and faces the auditory canal;

the second sound outlet hole is arranged on the second shell, and the direction of the second sound outlet hole is opposite to that of the first sound outlet hole and deviates from the auditory canal;

the sound generating device comprises a first shell, a second shell, a sound generating device, a sound transmitting hole, a sound receiving hole and a sound receiving hole.

Further, a sealing cover plate is arranged on one side, away from the second shell, of the second rear sound cavity.

Further, the inside wall that the second back tone chamber is close to the perisporium of the one end of sealed apron is provided with first ladder portion, sealed apron card is in the first ladder portion, the one end that sealed apron is close to first chamber that holds is equipped with the locking knot, first chamber that holds with be equipped with the baffle between the second back tone chamber, be equipped with the catching groove on the baffle, the catching groove is close to the one end and the locking knot cooperation of locking knot are connected, the catching groove is kept away from form the sound hole between one end and the locking knot of locking knot.

Further, the cavity further comprises a second accommodating cavity, and the second accommodating cavity is formed by surrounding the first shell, the sealing cover plate and the side wall of the first accommodating cavity.

Further, a circuit assembly is arranged in the second accommodating cavity, the circuit assembly comprises a circuit board and a battery, the battery is electrically connected with the circuit board, and the circuit board is electrically connected with the sounding device.

Further, the first sound outlet hole and the second sound outlet hole are respectively provided with a dustproof net.

Further, the inner wall surface of the first accommodating cavity is provided with a second step portion, and the sound generating device is fixed in the second step portion in a mode that the sound generating surface faces the first shell.

Further, the novel ear hanger also comprises an ear hanger, wherein the ear hanger comprises two free ends, the number of the main shell is two, and the main shell is respectively fixed at one free end of the ear hanger.

Further, a fixing hole is further formed between the first shell and the second shell of the main shell, a fixing head is arranged at the free end of the ear hook, and the fixing head is inserted into the fixing hole so that the main shell is fixedly connected with the ear hook.

Further, a first hole is formed in the fixing head, a second hole is formed in the side wall of the fixing hole, when the fixing head is inserted into the fixing hole, the first hole is communicated with the second hole, a locking piece is fixedly connected in the first hole and the second hole, and the locking piece penetrates through the first hole and the second hole.

The utility model provides an air conduction earphone with double sound outlet holes through improvement, which has at least one of the following improvements and advantages compared with the prior art:

1. the utility model is based on the structure without setting in-ear mode, and the wearing mode of combining the ear hook and the main shell body is utilized, so that the sound outlet position can be tightly pressed with the position of the human auditory canal, the utility model can be normally used without in-ear mode, dirt can be avoided, and the problem of ear pain caused by wearing the earphone for a long time can be avoided.

2. The utility model can prevent the sound wave from generating the sound short circuit by arranging the two sound outlet holes, and the two sound outlet holes are opposite, thereby compensating the low frequency part of the sound wave, extending the high frequency part of the sound wave and improving the low frequency performance of the sound wave.

Drawings

The utility model is further explained below with reference to the drawings and examples:

FIG. 1 is a schematic diagram of an air conduction earphone according to the present utility model;

FIG. 2 is an exploded view of a part of the structure of the air conduction earphone according to the present utility model;

FIG. 3 is a schematic view of the structure of the first housing according to the present utility model;

FIG. 4 is a schematic view of the structure of the first housing and the sealing cover plate according to the present utility model;

FIG. 5 is a schematic view of the structure of the second housing according to the present utility model;

FIG. 6 is a schematic view of a portion of the construction of an ear hook according to the present utility model;

FIG. 7 is a cross-sectional view of a portion of the structure of the air conduction earphone of the present utility model;

fig. 8 is a graph of a test of sound production of an air conduction earphone according to the present utility model.

Reference numerals illustrate:

7. ear-hanging; 1. a first housing; 2. a second housing; 4. a sound producing device; 5. a first sound outlet hole; 6. a second sound outlet hole; 51. a dust screen; 31. a first accommodation chamber; 32. a second rear sound cavity; 33. a front sound cavity; 34. a first rear sound cavity; 35. a sound transmission hole; 36. a second accommodation chamber; 321. sealing the cover plate;

322. a first step portion; 323. locking buckles; 311. a buckling groove; 312. a second step portion; 361. a circuit assembly; 71. a free end; 72. a fixing hole; 73. a fixed head; 721. a second hole; 731. a first hole; 74. a locking member.

Detailed Description

The following detailed description of the present utility model clearly and fully describes the technical solutions of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

It should also be understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

Furthermore, the terms "first," "second," "third," and the like in the description of the present specification and in the appended claims, are used for distinguishing between descriptions and not necessarily for indicating or implying a relative importance.

The utility model provides an air conduction earphone with double sound outlet holes through improvement, which comprises the following technical scheme:

as shown in fig. 1 and 2, an air conduction earphone with double sound outlet holes, comprising: the sound generating device comprises a main shell, a sound generating device 4, a first sound outlet 5 and a second sound outlet 6.

As shown in fig. 2 and 7, the main housing includes a first housing 1 and a second housing 2, and a cavity is formed between the first housing and the second housing, and the cavity includes a first accommodating cavity 31 and a second rear sound cavity 32.

The main shell is used for resonating and reverberation to influence the sounding effect of the sounding device 4 and the whole earphone, and the material of the main shell can be plastic, resin, metal material or mixed material and other materials with certain hardness, so that the durability of the shell is good, the shell is not easy to deform, the sounding device 4 and other parts in the shell can be protected, and the whole earphone is light enough. The first casing 1 and the second casing 2 are connected by means of fastening, screwing or screwing, etc., and the specific connection structure may adopt a conventional structure in the art, which is not described herein. Thereby defining a cavity for accommodating the electronic device between the first housing 1 and the second housing 2. The second casing 2 is a bowl-shaped member, the outer wall surface of the second casing is formed by a curved surface with a lower curvature, the outer wall surface of the second casing is provided with patterns formed by a plurality of grooves, the patterns are used for providing hand feeling when a user operates the earphone, and friction force is increased, so that the user is not easy to fall off when adjusting or taking the earphone, and aesthetic feeling is increased.

As shown in fig. 2, the sound generating device 4 is located in the first accommodating cavity 31, the front surface of the sound generating device 4 has a sound generating surface, the sound generating surface is close to the first housing 1, and the outer wall surface of the first housing 1 is attached to an ear of a human body. Wherein the sound generating means 4 may convert the electrical signal into sound (e.g. by controlling the magnetic field variation such that the diaphragm of the sound generating means 4 vibrates and sounds), in particular the sound generating means 4 may be a loudspeaker. The sound generating device 4 adopts a structure well known in the art, and will not be described herein.

As shown in fig. 2, 3 and 5, the first sound outlet 5 is provided on the first housing 1, and the first sound outlet 5 faces the auditory canal. The second sound outlet hole 6 is arranged on the second shell 2, and the direction of the second sound outlet hole 6 is opposite to that of the first sound outlet hole 5 and is far away from the auditory canal.

After the air conduction earphone is worn on a human body, the outer wall surface of the first shell 1 is attached to the ear of the human body, the position of the first sound outlet 5 is opposite to the external auditory meatus, a curved surface with a slower curvature is arranged on the outer wall surface of the first shell 1, and the first sound outlet 5 is arranged at the curved surface. The curved surface makes the first casing 1 laminate more with human ear for wear more comfortablely, use earphone time for a long time also be difficult for painful phenomenon. The curved surface is arranged to be slightly clamped into the concha cavity, so that the curved surface plays a certain role in fixation and positioning, and the first sound outlet hole 5 is more easily adjusted to the position facing the external auditory canal in the use and adjustment process of a user, so that the earphone can achieve a better playing effect.

As shown in fig. 4 and 7, a front sound cavity 33 is formed between the sound emitting surface on the front side of the sound emitting device 4 and the first housing 1, the front sound cavity 33 is communicated with the first sound emitting hole 5, a first rear sound cavity 34 is formed between the back side of the sound emitting device 4 and the second housing 2, the first rear sound cavity 34 is communicated with the second rear sound cavity 32 through a sound transmitting hole 35, and the second rear sound cavity 32 is communicated with the second sound emitting hole 6.

Like this, sound that sound generating device 4 produced because of sound emitting surface vibration enters into front sound cavity 33 to mix the back through front sound cavity 33 and pass through first sound outlet 5 and convey away, directly enter into the ear canal through the air conduction, the other parts that the air conduction adopted are all common general knowledge in the art and are not described in detail. The sound (usually low-frequency sound) generated by the air disturbance on the sound emitting surface of the sound emitting device 4 enters the first rear sound cavity 34, is mixed by the first rear sound cavity 34 and then enters the second rear sound cavity 32, and is then mixed by the second rear sound cavity 32 and then is transmitted by the second sound emitting hole 6, and the second sound emitting hole 6 is arranged to prevent the front sound wave and the rear sound wave of the sound emitting device 4 from generating the sound short circuit phenomenon, and can compensate the low-frequency part of the sound wave, extend the high-frequency part of the sound wave and improve the effect of low-frequency expression in the sound wave. Simultaneously, the purpose of allowing sound waves in the external environment to enter the front sound cavity through the sound generating device 4 is achieved, so that the earphone is not completely blocked from external environment sounds, and the hearing feeling is more space.

Above-mentioned air conduction earphone, through first back sound chamber 34 and the second back sound chamber 32 that is linked together with first back sound chamber 34, set up second back sound chamber 32 and can reveal sound generating mechanism 4 to the partial sound in first back sound chamber 34 and carry out the separation, the sound that produces sound generating mechanism 4 sound production face disturbance air and the sound that leaks when sound generating mechanism 4 sound weakens through first back sound chamber 34, then pass through the sound hole 35 and pass into second back sound chamber 32, the mixed back in rethread second back sound chamber 32 is passed out by second sound hole 6, can solve the sound short circuit phenomenon again when weakening the noise, promote the presentation effect of earphone.

The direction of the second sound outlet 6 is opposite to the first sound outlet 5 and far away from the auditory canal, so as to avoid influencing the sound production effect of the earphone, specifically, if the second sound outlet 6 is also directed towards the auditory canal, as the sound is mixed by the first rear sound cavity 34 and the second rear sound cavity 32 and then is transmitted by the second sound outlet 6, the time for reaching the auditory canal is different from the time for directly transmitting from the first sound outlet 5 to the auditory canal through air conduction, and the confusion is generated when the sound is heard by the human body, so that the sound is not transparent. If the second sound outlet 6 is directed toward the auricle, the sound is mixed by the first rear sound cavity 34 and the second rear sound cavity 32, then is transmitted out through the second sound outlet 6, reaches the auricle, and is reflected into the auditory canal through the auricle, so that the sound is more turbid. Therefore, the second sound outlet 6 is arranged in the direction opposite to the first sound outlet 5 and far away from the auditory canal, so that the sound entering the auditory canal is ensured to be clearer, and the sounding effect of the earphone is better.

Referring to fig. 8, a test graph of the sound emission of an air conduction earphone is shown, wherein the abscissa is the frequency of sound, and the unit is Hz; the ordinate is sound size in dB. In fig. 8, the solid line is a curve of the effective sound level when the second sound outlet 6 is provided in the direction away from the auditory canal, and the broken line is a curve of the effective sound level when the second sound outlet 6 is provided in the direction toward the auricle on the side of the case. According to the fig. 8, it can be seen that the position section from 240Hz to 800Hz has a volume of the second sound outlet when the second sound outlet is arranged in the direction away from the auditory canal greater than that of the second sound outlet when the second sound outlet is arranged on the side of the shell and faces the auricle, so that the medium-low frequency sensing of 240Hz-800Hz can be enhanced, that is, the medium-low frequency audio field can be enhanced remarkably, and the audio playing effect can be improved remarkably. The size and position of the second sound outlet hole can be changed slightly or the experimental equipment can be changed slightly, so that the test result shown in fig. 8 has only rough guidance, and a certain difference may be generated during retesting. The experimental data is not limiting of the utility model.

As shown in fig. 2 and 4, in some embodiments, a sealing cover 321 is disposed on a side of the second rear sound chamber 32 away from the second housing 2. The inside wall that second back sound chamber 32 is close to the one end of sealed apron 321 is provided with first ladder portion 322, sealed apron 321 card is in the first ladder portion 322, sealed apron 321 is close to the one end that first chamber 31 held is equipped with locking knot 323, first hold chamber 31 with be equipped with the baffle between the second back sound chamber 32, be equipped with catching groove 311 on the baffle, the one end that catching groove 311 is close to locking knot 323 is connected with locking knot 323 cooperation, catching groove 311 is kept away from form the sound hole 35 between one end that locking detained 323 and the locking knot 323. The area of the sound transmission holes 35 is larger than 1mm ² 。

The sealing cover plate 321 can separate the second rear sound cavity 32 from the control circuit board, the battery and other components in the second accommodating cavity 36, so that energy is prevented from being absorbed and consumed by the circuit board or the battery and other components, and the energy cannot be transmitted out through the second sound outlet 6, and the effect of sound leakage cannot be achieved. Simultaneously, the sealing cover plate 321 can be opened, when the second sound outlet hole 6 is blocked, the sealing cover plate 321 is conveniently opened, and then the second sound outlet hole 6 is cleaned.

As shown in fig. 5, in some embodiments, the cavity further includes a second accommodating cavity 36, and the second accommodating cavity 36 is formed by surrounding the first housing 1, the sealing cover 321, and the side wall of the first accommodating cavity 31. The second accommodating cavity 36 is provided with a circuit assembly 361, and the circuit assembly 361 comprises a circuit board and a battery, the battery is electrically connected with the circuit board, and the circuit board is electrically connected with the sound generating device 4. The circuit component 361 is disposed in the second accommodating cavity 36, so that displacement of the circuit component 361 caused by movement of the earphone is avoided, and the circuit component 361 is protected.

As shown in fig. 2, in some embodiments, the first sound outlet 5 and the second sound outlet 6 are respectively provided with a dust screen 51. The material of the dust-proof net 51 is generally a metal nickel sheet, and other similar materials may be used, which is not limited herein. The periphery of the first sound outlet hole 5 and the second sound outlet hole 6 are provided with dust screen 51 mounting grooves, and the periphery of the dust screen 51 is bonded with the dust screen 51 mounting grooves, so that the function of fixing the dust screen 51 can be achieved, and the normal use of the dust screen 51 can be ensured. The dust screen 51 can block external dust from entering the first sound outlet 5 and the second sound outlet 6, thereby preventing dust, body fluid, etc. from blocking the first sound outlet 5 and the second sound outlet 6, and causing unrecognizable sound.

As shown in fig. 5, in some embodiments, the inner wall surface of the first accommodating chamber 31 is provided with a second stepped portion 312, and the sound generating device 4 is fixed in the second stepped portion 312 with the sound generating surface facing the first housing 1. The sound generating device 4 is fixed in the second step 312 by means of gluing, ultrasonic welding, or the like, which is not limited herein. The second step part 312 is arranged, the sound generating device 4 is fixed on the second step part 312, on one hand, the sound generating device 4 can be limited and good fixing can be provided, and damage of the sound generating device 4 caused by collision and the like due to position is avoided; on the other hand, in order to mix the sound emitted from the generating surface of the sound generating device 4 in the front sound cavity 33 as much as possible, the unnecessary sound leakage caused by the gap between the first accommodating cavity 31 and the sound generating device 4 is avoided, so that the earphone achieves a better sound generating effect.

As shown in fig. 1 and 6, in some embodiments, the air conduction earphone with dual sound outlet further comprises an ear hook 7, wherein the ear hook 7 comprises two free ends 71, and the main housing has two free ends, and the main housing is respectively fixed to one free end 71 of the ear hook 7. The stability of this air conduction earphone is then improved to the ear-hang 7, guarantees the comfort level of use.

As shown in fig. 2, in some embodiments, a fixing hole 72 is further provided between the first housing 1 and the second housing 2 of the main housing, and the free end 71 of the ear hook 7 is provided with a fixing head 73, and the fixing head 73 is inserted into the fixing hole 72 so that the main housing is fixedly connected with the ear hook 7.

As shown in fig. 2 and 6, in some embodiments, the fixing head 73 is provided with a first hole 731, a second hole 721 is formed on a side wall of the fixing hole 72, when the fixing head 73 is inserted into the fixing hole 72, the first hole 731 is communicated with the second hole 721, and locking members 74 are fixedly connected in the first hole 731 and the second hole 721, and the locking members 74 pass through the first hole 731 and the second hole 721. The first and second holes 731 and 721 may be screw holes and the locking member 74 may be a screw. The first and second apertures 731, 721 may be pin apertures and the locking member 74 may be a pin. The fixing effect can be achieved by adopting a structure known in the art, and the fixing effect is not limited herein. The provision of the locking member 74 to lock the first and second holes 731 and 721 can doubly enhance the stability of the connection of the ear hook 7 to the housing.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.

Claims (10)

1. An air conduction earphone with double sound outlets, comprising:

the sound box comprises a main shell, wherein the main shell comprises a first shell (1) and a second shell (2), a cavity is formed between the first shell and the second shell, and the cavity comprises a first accommodating cavity (31) and a second rear sound cavity (32);

the sound generating device (4) is positioned in the first accommodating cavity (31), the front surface of the sound generating device (4) is provided with a sound generating surface, and the sound generating surface is close to the first shell (1);

the first sound outlet hole (5) is formed in the first shell (1), and the first sound outlet hole (5) faces towards the auditory canal;

the second sound outlet hole (6) is formed in the second shell (2), and the second sound outlet hole (6) faces opposite to the first sound outlet hole (5) and deviates from the auditory canal;

the sound generating device comprises a sound generating device (4), a front sound generating surface and a first shell (1), wherein a front sound cavity (33) is formed between the front sound generating surface of the sound generating device (4) and the first sound outlet (5), a first rear sound cavity (34) is formed between the back surface of the sound generating device (4) and a second shell (2), the first rear sound cavity (34) is communicated with a second rear sound cavity (32) through a sound transmission hole (35), and the second rear sound cavity (32) is communicated with a second sound outlet (6).

2. An air conduction earphone with double sound outlet according to claim 1, characterized in that the side of the second rear sound chamber (32) remote from the second housing (2) is provided with a sealing cover plate (321).

3. The air conduction earphone with double sound outlet holes according to claim 2, wherein a first step portion (322) is arranged on the inner side wall of the second back sound cavity (32) close to one end of the sealing cover plate (321), the sealing cover plate (321) is clamped in the first step portion (322), a locking buckle (323) is arranged on one end of the sealing cover plate (321) close to the first accommodating cavity (31), a baffle is arranged between the first accommodating cavity (31) and the second back sound cavity (32), a buckling groove (311) is arranged on the baffle, one end of the buckling groove (311) close to the locking buckle (323) is connected with the locking buckle (323) in a matched mode, and a sound transmission hole (35) is formed between one end of the buckling groove (311) far away from the locking buckle (323) and the locking buckle (323).

4. An air conduction earphone with dual sound outlet according to claim 2, characterized in that the cavity further comprises a second receiving cavity (36), the second receiving cavity (36) being formed by the first housing (1), a sealing cover plate (321) and a side wall of the first receiving cavity (31).

5. The air conduction earphone with double sound outlets as recited in claim 4, wherein a circuit assembly (361) is disposed in the second receiving cavity (36), the circuit assembly (361) including a circuit board and a battery, the battery being electrically connected to the circuit board, the circuit board being electrically connected to the sound generating device (4).

6. An air conduction earphone with double sound outlet according to claim 4, characterized in that the first sound outlet (5) and the second sound outlet (6) are respectively provided with a dust screen (51).

7. An air conduction earphone with double sound outlet holes as claimed in claim 6, characterized in that the inner wall surface of said first accommodation chamber (31) is provided with a second step portion (312), and said sound generating means (4) is fixed in said second step portion (312) with the sound generating surface facing said first housing (1).

8. An air conduction earphone with dual sound outlet as claimed in any one of claims 1-7 further comprising an ear hook (7), said ear hook (7) comprising two free ends (71), said main housings being two, each of said main housings being secured to a respective one of said free ends (71) of said ear hook (7).

9. An air conduction earphone with double sound outlet holes as in claim 8, wherein a fixing hole (72) is further provided between the first housing (1) and the second housing (2) of the main housing, the free end (71) of the ear hook (7) is provided with a fixing head (73), and the fixing head (73) is inserted into the fixing hole (72) to fixedly connect the main housing with the ear hook (7).

10. The air conduction earphone with double sound outlet holes as claimed in claim 9, wherein a first hole (731) is formed in the fixing head (73), a second hole (721) is formed in the side wall of the fixing hole (72), when the fixing head (73) is inserted into the fixing hole (72), the first hole (731) is communicated with the second hole (721), a locking piece (74) is fixedly connected in the first hole (731) and the second hole (721), and the locking piece (74) penetrates through the first hole (731) and the second hole (721).