CN114095818B - Earphone - Google Patents

Abstract

The present application provides an earphone, which includes a housing, a partition and a dynamic speaker. The casing has a sound outlet; the partition is arranged in the casing, and the edge of the partition is sealingly connected with the inner wall of the casing, so as to separate the inner space of the casing into a rear sound cavity relatively far away from the sound outlet and a rear sound chamber relatively close to the sound outlet. In the front sound chamber of the mouth, there is a vent hole on the partition, and the vent hole connects the front sound chamber and the rear sound chamber; the moving coil speaker is arranged in the front sound chamber and at least connected to the partition, and the moving coil speaker is connected to the rear sound chamber through the vent hole. There is air communication between the sound cavities. The earphones based on the embodiments of the present application can not only improve the sound quality of the earphones, but also prevent the diaphragm of the dynamic speaker from being broken due to excessive amplitude, and because the rear sound chamber is connected to the outside air, the air pressure received by the user's eardrum can be compared with that of the eardrum. The pressure of the outside air is balanced to improve the comfort of the user's eardrums.

Description

a kind of earphone

technical field

The present application relates to the technical field of audio playback, in particular to an earphone.

Background technique

The earphone is an electro-acoustic transducer, which plays the audio to be played by converting the electrical signal into a sound signal. Earphones can be divided into dynamic earphones, moving iron earphones, coil iron earphones, and isomagnetic earphones according to the energy conversion method. The volume of the current earphones is not small enough and the sound quality needs to be improved.

Contents of the invention

In order to at least partly solve the above problems, an embodiment of the present application provides an earphone, which includes a housing, a partition, and a dynamic speaker. The casing has a sound outlet; the partition is arranged in the casing, and the edge of the partition is sealingly connected with the inner wall of the casing, so as to separate the inner space of the casing into a rear sound cavity relatively far away from the sound outlet and relatively close to the sound outlet The front sound chamber is provided with a vent hole on the partition, and the vent hole communicates with the front sound chamber and the rear sound chamber; the moving coil horn is arranged in the front sound chamber and at least connected to the partition, and the moving coil speaker is connected to the front sound chamber through the vent hole. The air communication between the rear sound cavities.

Based on the earphone of the embodiment of the present application, the internal space of the housing is divided into a front sound cavity and a rear sound cavity by setting a partition, and a vent hole is opened on the partition to communicate with the front sound cavity and the rear sound cavity, so that the front sound cavity The air pressure inside is balanced with the air pressure in the rear sound chamber, which not only improves the sound quality of the earphone, but also prevents the diaphragm of the dynamic speaker from being broken due to excessive amplitude, and because the rear sound chamber communicates with the outside air, it can The air pressure received by the user's eardrum is balanced with the external air pressure, thereby improving the comfort of the user's eardrum.

Further, the moving coil speaker includes a speaker body and a speaker back cover. The speaker body is arranged between the partition and the sound outlet, and the first air passage is formed between the speaker body and the inner wall of the housing; A second air passage is formed between the rear cover and the partition, and the second air passage communicates with the first air passage and the vent hole respectively.

Based on the above-mentioned embodiment, by designing the speaker back cover to be arranged between the speaker body and the partition, and to cover the speaker body, on the one hand, the speaker back cover can protect the speaker body; The cover and the partition are arranged at intervals to form a second air passage, the second air passage communicates with the vent hole, and the second air passage communicates with the first air passage to form the airflow passage, so that the sound outlet can pass through the first air passage successively. The first airway, the second airway and the vent hole are in communication with the rear sound cavity.

Further, the earphone also includes a moving iron horn, and the moving iron horn is arranged in the front sound cavity and connected with the horn body.

Based on the above-mentioned embodiment, by setting the moving iron horn in the front sound cavity, the mid-high pitch from the moving iron horn and the bass sound from the moving coil speaker reverberate in the front sound cavity and enter the human ear through the sound outlet, so that The sound from the earphone has better sound quality; the connection between the moving coil speaker and the moving iron speaker can make the assembly of the moving iron speaker and the moving coil speaker more compact, which is conducive to the miniaturization of the casing and the earphone.

Further, an elastic member is arranged between the moving coil horn and the moving iron horn, and the end of the moving iron horn away from the sound outlet is arranged in the elastic member.

Based on the above-mentioned embodiment, the moving iron horn can be better assembled and fixed by setting the elastic piece, and the end of the moving iron horn away from the sound outlet is set in the elastic piece, so that the moving iron horn and the moving coil can be easily realized by means of the elastic piece Horn assembly.

Further, in the second air passage, a raised portion is provided between the partition and the horn rear cover, and the raised portion is disposed on the partition and/or the horn rear cover.

Based on the above-mentioned embodiment, by providing the raised portion, it is possible to ensure that there is a sufficient gap between the partition and the horn back cover, and that the second air passage has a sufficiently large flow cross-section, so that the air pressure in the front sound chamber is the same as that in the rear sound chamber. The air pressure inside can be quickly equalized.

Further, the speaker body includes a ring magnet, a diaphragm and a ring voice coil. The ring magnet is arranged on the side of the back cover of the speaker away from the separator, and the ring magnet is connected with the back cover of the speaker; the diaphragm is arranged between the back cover of the speaker and the ring magnet, and the edge of the diaphragm is connected to the ring magnet and/or the back cover of the speaker connection; the annular voice coil is arranged coaxially with the annular magnet, and the annular voice coil is connected with the surface of the vibrating membrane facing the ring magnet.

Based on the above-mentioned embodiment, the annular voice coil and the annular magnet are arranged coaxially, and the annular voice coil is connected to the surface of the diaphragm facing the annular magnet. When the current passed into the annular voice coil changes, the magnetic field generated by the annular voice coil Change, when the magnetic field generated by the ring voice coil changes, the interaction between the magnetic field of the ring magnet and the magnetic field generated by the ring voice coil makes the ring voice coil vibrate, and then the vibration of the diaphragm can be driven by the ring voice coil, thereby realizing the loudspeaker The vocal function of the body.

Further, the earphone further includes at least one feedback microphone arranged in the front sound cavity.

Based on the above embodiments, the feedback microphone has the function of sound collection and noise reduction, so that the earphone can output better sound quality. By setting the feedback microphone in the front sound cavity, the mixed sound in the front sound cavity can be directly sent to the outside of the casing after noise reduction to obtain better sound quality output.

Further, the feedback microphone is disposed on the elastic member.

Based on the above embodiments, the feedback microphone can be stably embedded in the elastic member, and at the same time, the extra space occupied by the feedback microphone in the front sound cavity can be reduced, so that the housing can be made smaller.

Further, an equalization hole is opened on the shell, and the equalization hole communicates with the front sound cavity.

Based on the above-mentioned embodiment, by opening an equalization hole on the shell, the equalization hole communicates with the front sound cavity, so that the balance of the air pressure in the front sound cavity and the external air pressure can be realized more quickly. On this basis, the front sound cavity can also be made The air pressure in the sound chamber and the air pressure in the rear sound chamber reach the equilibrium state more quickly, and the feedback microphone can also collect environmental noise through the equalization hole.

Further, both the vent holes and the equalization holes are covered with mesh cloth.

Based on the above-mentioned embodiments, the mesh cloth can not only prevent external debris from entering the front sound chamber, but also adjust the sound output curve of the earphone by replacing the mesh cloth with different meshes.

The embodiment of the present application provides an earphone, which divides the internal space of the housing into a front sound cavity and a rear sound cavity by setting a partition, and opens a vent hole on the partition to communicate with the front sound cavity and the rear sound cavity, so that the front sound cavity The air pressure in the sound cavity is balanced with the air pressure in the rear sound cavity, which not only improves the sound quality of the earphones, but also prevents the diaphragm of the dynamic speaker from being broken due to excessive amplitude. The air pressure received by the user's eardrum can be balanced with the external air pressure, thereby improving the comfort of the user's eardrum.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a partial cross-sectional structural schematic diagram of an earphone in an embodiment of the present application;

Fig. 2 is a partial cross-sectional structural schematic diagram of an earphone in another embodiment of the present application;

FIG. 3 is a structural schematic diagram of a viewing angle of an earphone in an embodiment of the present application;

Fig. 4 is a partial cross-sectional structural schematic diagram of an earphone in an embodiment of the present application;

Fig. 5 is a structural schematic diagram of another viewing angle of the earphone in an embodiment of the present application;

Fig. 6 is a structural schematic diagram of another viewing angle of an earphone in an embodiment of the present application;

Fig. 7 is a partial cross-sectional structural schematic diagram of an earphone in another embodiment of the present application;

Fig. 8 is a schematic structural diagram of a support in an embodiment of the present application.

Description of drawings: 1. Earphone; 10. Shell; 11. Sound outlet; 12. Front sound chamber; 13. Rear sound chamber; 14. Air flow channel; 141. First airway; 142. Second airway; 15. First positioning step; 16. Second positioning step; 20. Partition; 21. Vent hole; 22. Avoidance part; 221. Avoidance hole; 23. Seal connection part; 30. Moving coil horn; 31. Horn body ; 311, ring magnet; 312, diaphragm; 313, ring voice coil; 32, speaker back cover; 321, opening part; 3211, tuning hole; 322, cover part; 40, raised part; 41, the first protrusion; 42, the first slot; 43, the second protrusion; 44, the second slot; 45, avoidance groove; 50, support; 51; sound Hole; 52, support portion; 53, accommodation portion; 531, accommodation groove; 60, moving iron horn; 70, elastic member; 71, embedded groove; 80, feedback microphone; 90, flexible circuit board; 100, balance hole; 110, mesh cloth.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

In the related art, a moving coil earphone generally includes a casing and a moving coil unit located in the casing of the casing. In the technology, the moving coil unit is used as the boundary to divide the inner space of the shell into the front sound cavity and the rear sound cavity. Since the front sound cavity and the rear sound cavity are isolated from each other, during the sounding process of the earphone, the front sound cavity The air pressure in the earphone is not balanced with the air pressure in the rear sound chamber, which will affect the sound quality of the earphones, and easily cause the user's eardrum to be uncomfortable, and may even cause the diaphragm of the moving coil unit to rupture due to excessive amplitude.

In order to solve the above technical problems, as shown in FIG. 1 , an embodiment of the present application provides an earphone 1 . The earphone 1 includes a housing 10 , a partition 20 and a dynamic speaker 30 .

The shape, material and size of the housing 10 can not be limited, for example, the housing 10 has a sound outlet 11, and along the direction close to the sound outlet 11, the radial dimension of the housing 11 gradually decreases, so that the housing 11 can The end of the body 10 with the sound outlet 11 is provided with an ear cap, so that the ear-entry part of the earphone 10 (that is, the part including the ear cap) is adapted to the human ear and has better wearing comfort; for another example, the housing 10 It can be made of metal (such as aluminum and other metals), and the metal material can improve the overall rigidity of the housing 10, which can prevent the housing 10 from being easily damaged. 30, etc.) to play a better protective role, it is understandable that the housing 10 can also be made of other materials (such as plastic, etc.), the plastic material is easy to shape, and the cost is low.

The sound outlet 11 of the casing 10 is used to transmit the sound emitted by the dynamic speaker 30 to the outside of the casing 10 . It can be understood that the sound outlet 11 serves as a connection between the inside of the housing 10 and the outside of the housing 10, and the sound emitted inside the housing 10 can be transmitted to the outside of the housing 10 through the sound outlet 11. Then, the sound outside the housing 10 Dust, particles and other sundries are also easy to enter the housing 10 through the sound outlet 11. Therefore, a protective structure can be provided at the sound outlet 11, and the protective structure can have a plurality of holes for propagating sound, so that the earphone 1 The sound emitted is transmitted through the holes of the protective structure, and the protective device can also prevent external debris from entering the inside of the housing 10, so that the parts inside the housing 10 can be protected to ensure that the parts inside the housing 10 are not protected from Impurities entering the earphone 1 can work normally.

Specifically, the protective structure can include a protective net, which can be fixedly connected to the wall of the sound outlet 11. The protective net has a plurality of holes for transmitting sound. The sundries enter the housing 10; the protective device can further include an acoustic mesh layered with the protective net, the acoustic mesh is located on the inner side of the protective net and covers the sound outlet 11, the acoustic mesh can not only further prevent external miscellaneous The sound entering the casing 10 through the sound outlet 11 can also compensate for the lack of frequency response in different frequency bands, so that the sound output by the dynamic speaker 30 has a more stable and balanced sound quality.

The shape, material and size of the partition 20 are not limited, as long as it can be arranged in the housing 10 and divide the inner space of the housing 10 into two cavities. The partition 20 is arranged in the casing 10, and the edge of the partition 20 is sealed and connected with the inner wall of the casing 10, so as to separate the inner space of the casing 10 into a rear sound cavity 13 and a front sound cavity communicating with the sound outlet 11 12. It can be understood that the aforementioned "sealed connection" can be understood as: two components are connected and the two components are sealed at the connection position, the same below; when the two components are respectively the separator 20 and the housing 10, it can be understood It is: the edge of the partition 20 is connected to the inner wall of the housing 10, and the connection position between the edge of the partition 20 and the inner wall of the housing 10 is sealed, that is, the front sound chamber 12 and the rear sound chamber 13 cannot The communication is through the connection position between the edge of the partition 20 and the inner wall of the housing 10 . Specifically, the way of connecting the edge of the partition 20 to the inner wall of the housing 10 includes but not limited to glue joint, clip joint, screw joint, welding and the like. The edge of the partition 20 and the inner wall of the housing 10 can be sealed by glue, or by a sealing member (such as a rubber ring, etc.).

The partition 20 is used to divide the inner space of the housing 10 into a rear sound cavity 13 and a front sound cavity 12 . It can be understood that, by designing the size and shape of the front sound chamber 12 and the rear sound chamber 13 , the sound output by the earphone 1 can be corrected, so as to produce different correction effects on sounds corresponding to different audio frequencies. For example, since the front sound chamber 12 communicates with the sound outlet 11, that is, the sound emitted by the moving coil speaker 30 is first processed by the front sound chamber 12, and then transmitted to the outside of the casing 10 through the sound outlet 11, so that the corresponding sound of the audio It can be clearly transmitted to the human ear. By adjusting the size and shape of the front sound cavity 12, the front sound cavity 12 mainly affects the mid-high frequency part of the audio, thereby highlighting the mid-high frequency part of the audio, so that the audio is easier to be heard. Human ear recognition; For another example, the rear sound cavity 13 has less influence on the high-frequency sound, but has a greater impact on the low-frequency part. Therefore, the cavity size and shape of the rear sound cavity 13 can be adjusted to make the low-frequency part of the audio frequency more Prominent, for example, can make the low-frequency part emitted by the dynamic speaker 30 more balanced in terms of dive and volume.

The vent hole 21 is opened on the partition 20 , and the vent hole 21 is not opened at the edge of the partition 20 , so as to prevent the vent hole 21 from being blocked when the edge of the partition 20 is in sealing connection with the inner wall of the casing 10 . The vent hole 21 is used to connect the front sound cavity 12 and the rear sound cavity 13, so that the air pressure in the front sound cavity 12 and the rear sound cavity 13 can maintain a balanced state.

The moving coil speaker 30 is disposed in the front sound cavity 12 and can be connected to the partition 20 , so that the moving coil speaker 30 is fixed in the casing 10 . Further, in another implementation manner, at least a part of the edge of the moving coil horn 30 may be fixedly connected to the inner wall of the housing 10 to make the position of the moving coil horn 30 in the front sound cavity 12 more stable. In order to prevent the moving coil speaker 30 from blocking the vent hole 21, there is an airflow channel 14 between the inner wall of the housing 10 corresponding to the moving coil speaker 30 and the front sound chamber 12 and the partition 20, and the airflow can pass through the airflow channel 14 and then pass through the vent hole 21 And it communicates with the rear sound chamber 13, so that the front sound chamber 12 and the rear sound chamber 13 remain in communication. Since the front sound chamber 12 communicates with the rear sound chamber 13 through the airflow channel 14 and the vent hole 21, air is communicated between the moving coil horn 30 and the rear sound chamber 13, for example, the sound emitted by the moving coil horn 30 in the front sound chamber 12 Part of the sound passes through the front sound cavity 12 and is directly transmitted to the outside of the housing 10 through the sound outlet 11. At the same time, part of the sound emitted by the moving coil speaker 30 can be at least partially transmitted to the front through the vent hole 21 after flowing into the rear sound cavity 13. The sound cavity 12 is then transmitted to the outside of the shell 10 through the sound outlet 11, thereby improving the low-frequency effect of the earphone 1 .

In the related art, the internal space of the housing (similar to the housing 10 in the embodiment of the present application) is divided into a front sound chamber (similar to the moving coil horn 30 in the embodiment of the present application) as the boundary For the front sound cavity 12) and the rear sound cavity (similar to the rear sound cavity 13 in the embodiment of the present application), in order to strictly divide the front sound cavity and the rear sound cavity, the edge of the moving coil unit It needs to be sealed and connected with the inner wall of the shell. At the same time, in order to ensure the integrity of the diaphragm in the moving coil unit (the diaphragm is generally round), a vent hole is set on the moving coil unit on the basis of the sealed connection between the moving coil unit and the shell. It is inappropriate, because it is necessary to open a hole on the diaphragm to open a vent hole on the moving coil unit, which will cause damage to the diaphragm. Therefore, in the related art, it is impossible to provide a vent hole on the moving coil unit so that the moving coil The front sound cavity on both sides of the unit communicates with the rear sound cavity to ensure the air pressure balance between the front sound cavity and the rear sound cavity.

The difference between the embodiment of the present application and the related technology is that by additionally setting a partition 20 in the casing 10, the front sound chamber 12 and the rear sound chamber 13 are divided with the partition 20 as the boundary, and a vent is provided on the partition 20. The hole 21 is to communicate with the front sound chamber 12 and the rear sound chamber 13; by sealing the edge of the partition 20 with the inner wall of the housing 10, it is avoided that the front sound chamber 12 and the rear sound chamber 13 are communicated by the edge of the partition 20, and simultaneously The moving coil speaker 30 is arranged in the front sound cavity 12, and the air between the moving coil speaker 30 and the rear sound cavity 13 is connected, so that the moving coil speaker 30 is in air communication with the front sound cavity 12 and the rear sound cavity 13 at the same time, ensuring The sound effect of the dynamic speaker 30. On this basis, in order to avoid the communication between the front sound chamber 12 and the rear sound chamber 13 blocked by the moving coil speaker 30 , between the inner wall of the housing 10 corresponding to the moving coil speaker 30 and the front sound chamber 12 and the partition 20 An airflow passage 14 is formed, and the airflow located in the front sound chamber 12 passes through the airflow passage 14 and then communicates with the rear sound chamber 13 through the vent hole 21, thereby ensuring that the front sound chamber 12 and the rear sound chamber 13 are always connected, so that the front sound chamber 12 The air pressure inside and the air pressure in the rear sound chamber 13 are balanced, so that not only the sound quality of the earphone 1 can be improved, but also the diaphragm of the moving coil speaker 30 can be prevented from being broken due to excessive amplitude, and because the rear sound chamber 13 is generally in contact with the external air The air pressure received by the user's eardrum can be balanced with the external air pressure, thereby improving the comfort of the user's eardrum. In addition, the moving coil horn 30 in the embodiment of the present application may also be a sounding device such as a moving iron horn, a coil iron horn, and the like.

Specifically, as shown in FIG. 2 , the dynamic speaker 30 includes a speaker body 31 , and the speaker body 31 may further include a ring magnet 311 , a diaphragm 312 and a ring voice coil 313 . The horn body 31 is arranged between the partition 20 and the sound outlet 11. When the diaphragm 312 vibrates, it moves back and forth along the axial direction of the diaphragm 312 to produce sound in the housing 10; The inner walls of the body 10 are arranged at intervals to form a first air channel 141 , and the first air channel 141 may be formed near the entire peripheral side of the horn body 31 , or may be formed near a part of the side of the horn body 31 . Specifically, the first air passage 14 may be formed by a gap between the ring magnet 311 and the inner wall of the housing 10 corresponding to the front sound cavity 12 .

Further, the moving coil speaker 30 also includes a speaker rear cover 32, the speaker rear cover 32 is arranged between the speaker body 31 and the separator 20, and covers the speaker body 31, a part of the edge of the speaker rear cover 32 is in contact with the housing 10 The inner wall is connected, and the other part is spaced apart from the inner wall of the housing 10 , thereby ensuring the air communication between the airflow channel 14 and the air leakage hole 21 . On the one hand, the speaker rear cover 32 can protect the speaker body 31 , specifically, it can protect components such as the ring magnet 311 , the diaphragm 312 and the ring voice coil 313 . On the other hand, the second air channel 142 is formed by arranging the speaker rear cover 32 and the partition member 20 at intervals. There is a gap between them, so that the second air passage 142 communicates with the first air passage 141 and forms the airflow passage 14, so that the sound outlet 11 can pass through the first air passage 141, the second air passage 142 and the air release hole 21 in sequence The rear sound cavity 13 is connected.

Specifically, the ring magnet 311 has a hollow ring shape and is disposed on a side of the speaker back cover 32 away from the partition 20 , and the ring magnet 311 is fixedly connected to the speaker back cover 32 . A gap may be left between the ring magnet 311 and the inner wall of the housing 10 corresponding to the front sound chamber 12 to form the first air passage 141 .

The shape of the diaphragm 312 is circular, and it is arranged between the horn back cover 32 and the ring magnet 311. The edge of the diaphragm 312 can be connected to the edge of the ring magnet 311 separately, and can also be connected to the edge of the speaker back cover 32 separately. When the edge of the ring magnet 311 coincides with the projection of the edge of the speaker back cover 32 on the diaphragm 312 , the edge of the diaphragm 312 can also be connected to the edges of the ring magnet 311 and the edge of the speaker back cover 32 at the same time.

The ring voice coil 313 is arranged coaxially with the ring magnet 311 , and the ring voice coil 313 is connected with the surface of the diaphragm 312 facing the ring magnet 311 . The annular voice coil 313 may be a coil, and when the current passing through the annular voice coil 313 changes, the magnetic field generated by the annular voice coil 313 changes accordingly. The ring magnet 311 may be a permanent magnet, capable of generating a permanent magnetic field. When the magnetic field generated by the ring voice coil 313 changes, the interaction between the magnetic field of the ring magnet 311 and the magnetic field generated by the ring voice coil 313 makes the ring voice coil 313 reciprocate along the axial direction of the ring magnet 311, and then the ring sound can be passed The ring 131 drives the vibration of the vibrating membrane 312 to realize the sounding function of the horn body 31 .

Specifically, referring to FIG. 3 , the partition 20 includes a evacuation portion 22 located in the middle of the partition 20 and a sealing connection portion 23 surrounding the evasion portion 22 . The avoidance part 22 is provided with an avoidance hole 221; the speaker back cover 32 includes an opening part 321 located in the middle part of the speaker rear cover 32, and the opening part 321 is provided with a tuning hole 3211, and the tuning hole 3211 communicates with the rear sound through the avoidance hole 221. The cavity 13 is connected, so that the sound emitted by the vibrating diaphragm 312 can be transmitted to the rear sound cavity 13 through the tuning hole 3211 and the avoidance hole 221 , thereby improving the low frequency effect of the earphone 1 through the rear sound cavity 13 .

Further, the opening portion 321 is sleeved in the avoidance hole 221 of the avoidance portion 22, and the escape portion 22 and the opening portion 321 are hermetically connected, so that the avoidance hole 221 and the tuning hole 3211 are respectively connected to the second air passage 142. Insulation, that is, the sound transmission channel formed by the avoidance hole 221 and the tuning hole 3211 to transmit sound to the rear sound chamber 13 is isolated from the second airway 142, thereby preventing the second airway 142 from vibrating the diaphragm 312 and the rear sound chamber. 13. The sound transmission between the effects. Specifically, the sealed connection between the avoidance portion 22 and the opening portion 321 can ensure that the audio frequency has a better transmission effect. Entering the second airway 142, thereby reducing the constricting effect of the rear sound chamber 13 on the sound; Noise is generated inside, resulting in the deterioration of the sound quality output by the rear sound cavity 13, that is, the sealed connection between the avoidance part 22 and the opening part 321 can restrict the flow direction of the gas in the airflow channel 14, so that the gas can only pass through the vent hole 21 In and out of the rear sound chamber 13. It can be understood that an acoustic mesh can be provided at the tuning hole 3211, and the sound output curve of the earphone 1 can be adjusted by replacing the acoustic mesh with a different mesh.

Further, the avoidance hole 221 can be larger than the tuning hole 3211, by setting the hole diameter of the avoidance hole 221 larger than the hole diameter of the tuning hole 3211, so that the opening part 321 can extend into the avoidance hole 221, and the opening part 321 can be relatively The other parts of the speaker rear cover 32 protrude and extend into the avoidance hole 221, so that the avoidance hole 221 can expose part of the opening portion 321, that is, the hole wall of the avoidance hole 221 is in contact with the surface of the opening portion 321, which is convenient for avoiding Glue is dispensed at the contact position between the hole wall of the hole 221 and the opening portion 321 , so as to realize the sealed connection between the escape portion 22 and the opening portion 321 .

As shown in FIG. 4 , in addition to the opening portion 321 , the horn back cover 32 also includes a covering portion 322 surrounding the opening portion 321 , and a glue joint surrounding the covering portion 322 . part 323 and the connecting part 324 provided on the edge of part of the adhesive part 323; the opening part 321 and the covering part 322 are both covered on the diaphragm 312, and the opening part 321 is protruding compared to the covering part 322 to extend into the avoidance hole 221; the adhesive part 323 extends from the cover part 322 to the position of the ring magnet 311, and is glued to the ring magnet 311; the connecting part 324 extends from a part of the adhesive part 323 to the direction away from the ring magnet 311, and It is fixedly connected with the inner wall of the housing 10, so as to realize the fixed connection between the speaker rear cover 32 and the inner wall of the housing 10 through the connecting part 324; Therefore, there is a gap between the other part of the adhesive part 323 and the housing 10, that is, this part makes a part of the edge of the speaker rear cover 32 spaced from the housing 10, so that the first air passage 141 and the second air passage 142 pass through the gap. Gap connectivity. Because the ring magnet 311 is glued to the glue joint 323, the diaphragm 312 is arranged between the speaker rear cover 32 and the ring magnet 311, and the edge of the diaphragm 312 is connected to the ring magnet 311 and/or the speaker rear cover 32, therefore, through The speaker rear cover 32 is partly fixedly connected with the inner wall of the casing 10 , which can ensure the relative fixation of the diaphragm 312 and the ring magnet 311 in the front sound cavity 12 .

Please continue to refer to FIG. 4, corresponding to the sealing connection portion 23, the inner wall of the housing 10 is provided with a first positioning step 15, and the edge of the partition 20, that is, the sealing connection portion 23 is in sealing connection with the first positioning step 15. A positioning step 15, the spacer 20 can be easily assembled on the first positioning step 15 during assembly, and after the spacer 20 is assembled on the first positioning step 15, the spacer 20 is carried by the first positioning step 15, which can improve The installation stability of the spacer 20 is improved, and when the spacer 20 is sealed and connected with the inner wall of the housing 10 by glue, the first positioning step 15 can carry more glue, thereby improving the distance between the spacer 20 and the inner wall of the housing 10. The sealing stability between.

Corresponding to the connecting portion 324, the inner wall of the casing 10 is provided with a second positioning step 16, and the edge of the speaker rear cover 32, that is, the connecting portion 324 is connected to the second positioning step 16. It can be understood that this connection method includes but does not Limited to gluing, clamping, abutting, etc., by setting the second positioning step 16, the horn back cover 32 can be easily assembled on the second positioning step 16 during assembly, and the horn back cover 32 is assembled on the second positioning step 16. Behind the step 16, the speaker back cover 32 and the speaker body 31 connected to the speaker back cover 32 are carried by the second positioning step 16, which can improve the installation stability of the speaker body 31 and the speaker back cover 32.

Please continue to refer to FIG. 4 , further, in the second air passage 142, a raised portion 40 is provided between the partition 20 and the speaker rear cover 32, and the raised portion 40 is separately arranged on the partition 20, or is separately arranged on The speaker rear cover 32 , or the protruding portion 40 is disposed on the partition 20 and the speaker rear cover 32 at the same time. When the spacer 20 and the speaker rear cover 32 are respectively provided with a protrusion 40 , the position of the protrusion 40 on the spacer 20 corresponds to that of the speaker rear cover 32 and abuts against each other. By arranging the raised portion 40, it can be ensured that there is a sufficient gap between the spacer 20 and the horn back cover 32, and that the second air passage 142 has a sufficiently large flow cross-section, so that the air pressure in the front sound chamber 12 is consistent with that of the rear sound chamber. The air pressure in 13 can be quickly equalized. Furthermore, the raised portion 40 provided on the partition 20 and the raised portion 40 provided on the speaker rear cover 32 can also have a mutual limiting effect, so as to better ensure the stability of the connection between the separator 20 and the speaker rear cover 32 sex.

As shown in FIG. 5 , further, one of the edge of the partition 20 and the inner wall of the housing 10 is provided with a first protrusion 41 , and the other of the edge of the partition 20 and the inner wall of the housing 10 is provided with a first projection 41 . The slot 42, the first protrusion 41 is engaged with the first slot 42, that is, the spacer 20 and the housing 10 are engaged through the first protrusion 41 and the first slot 42, so that not only is it convenient for the spacer 20 and the casing 10 , and after assembly, the partition 20 cannot rotate relative to the casing 10 , thereby improving the installation stability of the partition 20 on the casing 10 .

As shown in FIG. 6 , further, a part of the edge of the speaker rear cover 32 connected to the housing 10 and one of the inner walls of the housing 10 corresponding to the front sound chamber 12 is provided with a second protrusion 43 , and the speaker rear cover 32 The other part of the edge connected to the housing 10 and the inner wall of the housing 10 corresponding to the front sound chamber 12 is provided with a second card slot 44, and the second protrusion 43 is engaged with the second card slot 44, that is, the speaker A part of the edge of the back cover 32 connected to the housing 10 is engaged with the inner wall of the housing 10 corresponding to the front sound cavity 12 through the second protrusion 43 and the second locking groove 44. 10, and after assembly, the speaker rear cover 32 cannot rotate relative to the housing 10, thereby improving the installation stability of the speaker rear cover 32 on the housing 10.

As shown in Figures 7 and 8, further, in order to improve the installation stability of the moving coil speaker 30 in the housing 10, the earphone 1 can also include a support 50, which is arranged near the sound outlet of the ring magnet 311 11, and the ring magnet 311 is arranged on the support member 50, so that the ring magnet 311 is supported by the support member 50, because the ring magnet 311 is connected with the diaphragm 312 and the horn back cover 32, and because the ring voice coil 313 and The surface of one side of the diaphragm 312 facing the ring magnet 311 is connected, therefore, the support member 50 also supports the diaphragm 312, the speaker back cover 32 and the ring voice coil 313; in addition, the support member 50 is provided with a sound hole 51 (see FIG. 8 ), the sound generated by the vibration of the diaphragm 312 is transmitted to the sound outlet 11 through the sound outlet hole 51 . It can be understood that the number, size, location and distribution of the sound holes 51 can be set according to actual conditions, which is not limited in this embodiment. It can be understood that, in order to transmit the sound generated by the vibration of the diaphragm 312 through the sound outlet 51 , the ring magnet 311 should be set away from the position where the sound outlet 51 is located.

Please continue to refer to FIGS. 7-8 . Further, in order to improve the sound quality of the earphone 1 , the earphone 1 may also include a single moving iron horn 60 or multiple moving iron horns 60 , and the moving iron horn 60 is arranged in the front sound cavity 12 . The sounding effect of the moving iron horn 60 on the middle and high frequency is better, and the sounding effect of the moving coil speaker 30 on the low frequency is better. The bass from the moving coil speaker 30 reverberates in the front sound cavity 12 and enters the human ear through the sound outlet 11 , so that the sound from the earphone 1 has better sound quality.

In the related technology, the side surface of the diaphragm without the annular voice coil is facing the sound outlet, and the side (or front side) of the diaphragm without the annular voice coil is used as the sounding position (or frontal sounding) . In the present embodiment, according to the previous description, the side surface of the diaphragm 312 provided with the annular voice coil 313 is set toward the sound outlet 11, that is, the diaphragm 312 adopts the side provided with the annular voice coil 313 ( or the back side) as the sounding position (or the back side sounding), so that the moving iron horn 60 is closer to the sounding position of the diaphragm 312, which can reduce the phase difference of the sound output by the moving iron horn 60 and the diaphragm 312 , thereby improving the sound quality of the earphone 1 .

Specifically, referring to FIG. 7 and FIG. 8 , the supporting member 50 further includes a supporting portion 52 and an accommodating portion 53 . The support part 52 is arranged in a ring shape and connected to the inner wall of the housing 10. The ring magnet 311 is arranged on the side of the support part 52 away from the sound outlet 11, so as to support the ring magnet 311 through the support part 52; the accommodating part 53 and the support part 52 The ring magnet 311 is arranged on the outside of the housing part 53 and is located on the support part 52. The housing part 53 is provided with a housing groove 531, and the notch of the housing groove 531 is set toward the sound outlet 11. Compared with Compared with the moving coil horn 30, the volume of the moving iron horn 60 is relatively small. Therefore, the end of the moving iron horn 60 away from the sound outlet 11 is accommodated in the accommodation groove 531. Since the ring magnet 311 is arranged around the accommodation portion 53 In addition, the end of the moving iron horn 60 away from the sound outlet 11 is accommodated in the accommodating groove 531, therefore, the end of the moving iron horn 60 away from the sound outlet 11 is actually accommodated in the ring magnet 311, that is, the moving iron horn 60 is actually accommodated in the ring magnet 311. The iron horn 60 is partly accommodated in the moving coil horn 30 , so that the moving iron horn 60 and the moving coil horn 30 can be assembled more compactly, which is beneficial to the miniaturization of the casing 10 and the earphone 1 . The sound outlet 51 is opened on the supporting portion 52 to avoid being blocked by the iron horn 60 when the sound outlet 51 is opened in the accommodating portion 53 . The ring magnet 311 is disposed on the supporting portion 52 and avoids the sound outlet 51 , so that the sound emitted by the diaphragm 312 is transmitted through the sound outlet 51 .

It can be understood that one end of the ring magnet 311 can be sealingly connected with the support part 52, and the other end of the ring magnet 311 can be sealingly connected with the speaker back cover 32, so that the support member 50, the ring magnet 311, the diaphragm 312, and the ring voice coil 313 and the speaker back cover 32 form a sealed moving coil speaker module, the moving coil speaker module communicates with the rear sound cavity 13 through the tuning hole 3211 of the speaker back cover 32, and passes through the sound hole 51 of the support part 52 It communicates with the front sound cavity 12, so that when assembling the earphone 1, the dynamic speaker module can be directly installed on the first positioning step 15, thereby avoiding the support 50, the ring magnet 311, the diaphragm 312, the ring voice coil 313 and the speaker rear cover 32 are installed one by one, thereby improving the assembly efficiency of the earphone 1 .

Please continue to refer to FIG. 7 , further, in order to better assemble and fix the moving iron horn 60 and the moving coil horn 30 , the earphone 1 further includes an elastic member 70 , the cross-sectional shape of the elastic member 70 may be U-shaped, and the opening faces the outlet. The sound port 11, the elastic member 70 is embedded in the accommodation groove 531, and the end of the moving iron horn 60 away from the sound outlet 11 is accommodated in the elastic member 70, so that the elastic member 70 abuts against the groove wall of the accommodation groove 531 and achieve interference fit; the elastic member 70 has an embedding groove 71, and the opening of the embedding groove 71 makes the elastic member 70 easier to deform, easier to install in the receiving groove 531 of the support member 50, and can also be used to place the moving iron horn The end of 60 away from the sound outlet 11 is embedded in the embedding groove 71, and has an interference fit with the groove wall of the embedding groove 71, so that the assembly of the elastic member 70 and the moving iron horn 60 can be easily realized.

As shown in Figure 7, the earphone 1 also includes a feedback microphone 80 and a flexible circuit board 90, the feedback microphone 80 is embedded in the elastic member 70; the flexible circuit board 90 extends from the rear sound chamber 13 to the front sound chamber 12, and the flexible circuit board 90 It is electrically connected with the annular voice coil 313 , the moving iron horn 60 and the feedback microphone 80 .

The feedback microphone 80 is directly embedded in the elastic member 70 , which is not only convenient for installation, but also does not occupy additional space of the front sound chamber 12 . The feedback microphone 80 can be used to collect environmental noise, and transmit the collected environmental noise signal to the processor of the earphone 1 through the flexible circuit board 90, or to the processor of the audio playback terminal connected to the earphone 1, and the processor performs real-time calculation , through the flexible circuit board 90 to the moving coil speaker 30 and the moving iron speaker 60, the audio signal with the opposite phase and the same amplitude as the ambient noise is sent, and the corresponding audio signal is played through the moving coil speaker 30 and the moving iron speaker 60, so as to Offset the ambient noise, so as to achieve the effect of active noise reduction. The flexible circuit board 90 has the characteristics of high wiring density, light weight, thin thickness and good bendability, and can be bent and wired according to the actual situation, so that the connection with the annular voice coil 313 and the dynamic circuit board 90 can be realized through a flexible circuit board 90 Electrical connection between the iron horn 60 and the feedback microphone 80 .

Please refer to FIG. 3 . Correspondingly, a part of the edge of the speaker rear cover 32 and a part of the edge of the separator 20 are provided with avoidance grooves 45 . The electrical connection of the processor of the earphone 1, and the flexible circuit board 90 can extend from the rear sound cavity 13 to the front sound cavity 12 via the escape groove 45, so as to realize the connection with the annular voice coil 313, the moving iron horn 60 and the front sound cavity 12. The electrical connection between the feedback microphones 80 . It can be understood that the avoidance groove 45 on the edge of the partition 20 needs to be sealed after the flexible circuit board 90 passes through, so as to prevent the front sound chamber 12 and the rear sound chamber 13 from communicating through the avoidance groove 45 .

Since the vent hole 21 is far away from the front sound chamber 12, in order to quickly balance the air pressure in the front sound chamber 12 with the air pressure of the outside air, further, as shown in FIG. The equalization hole 100 is connected with the front sound cavity 12. Since the equalization hole 100 is directly connected with the front sound cavity 12, the air pressure in the front sound cavity 12 and the air pressure of the external air can quickly reach a balanced state. On this basis, the front sound cavity can also be made The air pressure in the sound chamber 12 and the air pressure in the rear sound chamber 13 reach equilibrium more quickly. In addition, the feedback microphone 80 can collect ambient noise through the equalization hole 100 . Furthermore, the vent hole 21 and the equalization hole 100 are respectively covered with a mesh cloth 110, the mesh cloth 110 can not only prevent external debris from entering the front sound cavity 12, but also can adjust the earphone by replacing the mesh cloth 110 of different meshes. 1 sound output curve.

In the drawings of this embodiment, the same or similar symbols correspond to the same or similar components; The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific Orientation structure and operation, therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes, and should not be construed as limitations on this patent. Those of ordinary skill in the art can understand the specific meanings of the above terms according to specific situations.

The above are only preferred embodiments of the application, and are not intended to limit the application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the application should be included in the protection scope of the application. Inside.

Claims (9)

1. An earphone, the earphone comprising:

the shell is provided with a sound outlet;

the separator is arranged in the shell, the edge of the separator is connected with the inner wall of the shell in a sealing way, so that the inner space of the shell is divided into a rear sound cavity relatively far away from the sound outlet and a front sound cavity relatively close to the sound outlet, the separator is provided with a vent hole, and the vent hole is communicated with the front sound cavity and the rear sound cavity;

the moving coil loudspeaker is arranged in the front sound cavity and is at least connected with the partition piece, and the moving coil loudspeaker is communicated with the rear sound cavity through the air leakage hole in an air mode; the moving coil loudspeaker comprises a loudspeaker body and a loudspeaker rear cover, wherein the loudspeaker body is arranged between the partition piece and the sound outlet, and a first air passage is formed between the loudspeaker body and the inner wall of the shell; the loudspeaker rear cover is arranged between the loudspeaker body and the partition piece and is covered on the loudspeaker body, a second air passage is formed between the loudspeaker rear cover and the partition piece, and the second air passage is respectively communicated with the first air passage and the air leakage hole.

2. The earphone of claim 1, further comprising a moving iron horn disposed within the front sound cavity and connected to the horn body.

3. The earphone of claim 2, wherein an elastic member is disposed between the moving coil speaker and the moving iron speaker, and an end of the moving iron speaker away from the sound outlet is disposed in the elastic member.

4. The earphone according to claim 1, wherein a boss is provided between the partition and the horn rear cover in the second air passage, the boss being provided on the partition and/or the horn rear cover.

5. The earphone of claim 1, wherein the horn body comprises:

the annular magnet is arranged on one side of the horn rear cover, which is away from the partition piece, and is connected with the horn rear cover;

the vibrating diaphragm is arranged between the loudspeaker rear cover and the annular magnet, and the edge of the vibrating diaphragm is connected with the annular magnet and/or the loudspeaker rear cover;

the annular voice coil is coaxially arranged with the annular magnet, and is connected with one side surface of the vibrating diaphragm, which faces the annular magnet.

6. The headset of claim 3, wherein the headset further comprises:

at least one feedback microphone disposed within the front sound cavity.

7. The earphone of claim 6, wherein the feedback microphone is disposed on the elastic member.

8. The earphone of claim 1, wherein the housing further defines an equalization aperture, the equalization aperture being in communication with the front sound chamber.

9. The earphone of claim 1, wherein the vent hole is covered with a mesh.