CN213694107U - Sound production monomer and earphone - Google Patents

Abstract

The utility model discloses a sound production monomer and earphone, sound production monomer include the casing and locate sound production unit in the casing, sound production unit include magnetic yoke, magnetic circuit system and with magnetic circuit corresponds the vibration system that sets up, the magnetic yoke include the bottom plate and from the positioning support post that the bottom plate is buckled and is extended, magnetic circuit system locates including pasting the magnet steel assembly of bottom plate is located with pasting the magnet steel assembly keeps away from the magnetic conductive plate subassembly of bottom plate one side, be equipped with on the magnetic conductive plate subassembly with positioning support post complex constant head tank. The utility model discloses a sound production monomer size is little, tone quality is good.

Description

Sound production monomer and earphone

Technical Field

The utility model relates to an electroacoustic conversion technology field, in particular to sound production monomer and earphone.

Background

The loudspeaker comprises a magnetic circuit component, a vibration component and a shell, wherein the voice coil is connected with an external power supply through a voice coil lead, the electrified voice coil is stressed to generate vibration in a magnetic field of the magnetic circuit system, and the vibration of the voice coil drives the vibration of the vibrating diaphragm to generate resonance with surrounding air to make sound. Among the current speaker structure, need set up in the shell with magnetic yoke complex location structure of magnetic circuit to it is fixed with magnetic yoke and shell through location structure, location structure will occupy the accommodating space in the shell, makes to leave for magnetic circuit's space in the shell and reduces, influences the magnetic circuit magnetic flux, thereby leads to the sound production monomer acoustic performance not good. Especially, when the housing is an irregular metal housing, the operation difficulty of arranging the positioning structure on the metal housing is large.

Therefore, it is desirable to provide a novel sounding unit to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sound production monomer aims at solving current speaker structure, and the location structure of extra setting influences magnetic circuit and arranges the space, leads to the not good technical problem of acoustic performance.

For realizing above-mentioned purpose, the utility model provides a sound production monomer includes the casing and locates sound production unit in the casing, sound production unit include magnetic yoke, magnetic circuit system and with magnetic circuit corresponds the vibration system that sets up, the magnetic yoke include the bottom plate and certainly the bottom plate is buckled the location pillar that extends, magnetic circuit system locates including pasting the magnet steel assembly and the subsides of bottom plate are located magnet steel assembly keeps away from the magnetic conductive plate subassembly of bottom plate one side, be equipped with on the magnetic conductive plate subassembly with location pillar complex constant head tank.

Optionally, the magnetic steel assembly includes a main magnetic steel and an auxiliary magnetic steel forming a magnetic gap with the main magnetic steel, the magnetic conducting plate assembly includes a main magnetic plate attached to the main magnetic steel and an auxiliary magnetic conducting plate attached to the auxiliary magnetic steel, and the positioning slot is opened in the auxiliary magnetic conducting plate.

Optionally, the auxiliary magnetic conductive plate is annular and has a central hole, the main magnetic conductive plate is disposed in the central hole and spaced from the auxiliary magnetic conductive plate, the inner wall of the magnetic conductive plate forming the central hole is recessed in a direction away from the main magnetic conductive plate to form the positioning groove, the positioning pillar is inserted into the positioning groove, the positioning pillar and the main magnetic steel are spaced to form a gap, and the voice coil of the vibration system is inserted into the gap.

Optionally, the number of the auxiliary magnetic steels and the number of the positioning pillars are two, the two auxiliary magnetic steels are arranged on two opposite sides of the main magnetic steel, the side wall of the main magnetic steel comprises a first side surface arranged at an interval with the auxiliary magnetic steels and a second side surface connected with the two first side surfaces, and the two positioning pillars are arranged at an interval with the second side surface respectively.

Optionally, the auxiliary magnetic conductive plate is annular and has a central hole, the main magnetic conductive plate is disposed in the central hole and spaced from the auxiliary magnetic conductive plate, the auxiliary magnetic conductive plate is far away from the outer wall of the magnetic conductive plate of the main magnetic conductive plate and is recessed towards the direction close to the main magnetic conductive plate to form the positioning groove, and the positioning support is inserted into the positioning groove.

Optionally, an avoiding hole for avoiding the positioning pillar is formed in the auxiliary magnetic steel.

Optionally, the secondary magnetic steel is an annular magnetic steel disposed around the primary magnetic steel.

Optionally, a pressure relief opening is formed in the casing, an air vent is formed in the bottom plate, a second airflow channel with an opening facing the vibration system is formed in the magnetic conduction plate assembly and the magnetic steel assembly, and the air vent is communicated with the first airflow channel and the pressure relief opening.

Optionally, the surface of the bottom plate away from the vibration system is provided with an airflow groove communicated with the vent hole, and a first airflow channel is formed between the airflow groove and the shell.

Optionally, the quantity of sound generating unit is two, two sound generating unit's vibration system sets up relatively, two one is bass sound generating unit in the sound generating unit, and another is bass sound generating unit or treble sound generating unit.

This the utility model also provides an earphone, the earphone includes such as above-mentioned sound production monomer.

In the utility model, when the magnetic yoke and the magnetic circuit system are assembled, the magnetic yoke can be positioned by the positioning pillar and the positioning groove, thereby saving the positioning structure used for positioning the assembling position of the magnetic yoke in the prior art, and compared with the positioning structure in the prior art, the magnetic yoke provided by the utility model has simple structure, and is particularly beneficial to the sounding monomer with the irregular metal shell; meanwhile, compared with the positioning groove arranged on the magnetic steel assembly, the positioning groove arranged on the magnetic conduction plate assembly has small influence on the magnetic flux of the magnetic circuit system; the positioning pillars extending out of the bottom plate are matched with the positioning grooves, so that the symmetry and the concentricity of the sounding unit are ensured, and the magnetic conduction yoke and the magnetic conduction plate assembly have both magnetic conduction and positioning functions.

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 structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of a disassembled structure of an embodiment of the sound generating unit of the present invention;

fig. 2 is a schematic perspective view of a partial structure of the sound generating unit according to the present invention;

fig. 3 is a schematic cross-sectional structure view of the sound generating unit shown in fig. 2;

fig. 4 is a schematic view of a disassembled structure of another embodiment of the sound generating unit of the present invention;

fig. 5 is a schematic perspective view of a partial structure of another embodiment of the sound generating unit of the present invention;

fig. 6 is a schematic cross-sectional structure view of the sound generating unit shown in fig. 2;

fig. 7 is a schematic perspective view of an embodiment of the sound-generating unit of the present invention;

FIG. 8 is a schematic view of the disassembled structure of the sounding unit shown in FIG. 7;

FIG. 9 is a schematic cross-sectional view of the sounding unit shown in FIG. 7 along the line A-A;

fig. 10 is a schematic cross-sectional view of an embodiment of the earphone of the present invention;

fig. 11 is a schematic cross-sectional view of another embodiment of the earphone of the present invention.

Examples reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, 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.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a sound production monomer.

Referring to fig. 1, fig. 2, fig. 3 and fig. 7, the utility model discloses technical scheme provides a sound production monomer 100, sound production monomer 100 includes casing 10 and locates sound production unit 30 in the casing 10, sound production unit 30 include magnetic yoke 5, magnetic circuit 1 and with magnetic circuit 1 corresponds the vibration system 3 that sets up, magnetic yoke 5 includes bottom plate 51 and certainly bottom plate 51 buckles the location pillar 53 that extends, magnetic circuit 1 locates including pasting magnetic steel component 11 and the subsides of bottom plate 51 are located magnetic steel component 11 keeps away from magnetic steel component 13 of bottom plate 51 one side, be equipped with on the magnetic steel component 13 with location pillar 53 complex constant head tank 132.

When the magnetic conducting yoke 5 and the magnetic circuit system 1 are assembled, the positioning structure for positioning the assembling position of the magnetic conducting yoke in the prior art can be omitted by positioning the positioning pillar 53 and the positioning groove 132, and compared with the positioning structure in the prior art, the magnetic conducting yoke 5 provided by the utility model has a simple structure, and is particularly beneficial to the sounding unit 100 with the irregular metal shell 10; meanwhile, compared with the positioning groove 132 arranged on the magnetic steel component 11, the positioning groove 132 arranged on the magnetic conducting plate component 13 has little influence on the magnetic flux of the magnetic circuit system 1; the positioning pillar 53 extending from the bottom plate 51 is matched with the positioning groove 132, so as to ensure the symmetry and the concentricity of the sound generating unit 30, and the magnetic yoke 5 and the magnetic conductive plate assembly 13 have both magnetic conduction and positioning functions.

Further, the magnetic steel assembly 11 includes a main magnetic steel 111 and an auxiliary magnetic steel 113 forming a magnetic gap with the main magnetic steel 111, the magnetic conducting plate assembly 13 includes a main magnetic plate 131 attached to the main magnetic steel 111 and an auxiliary magnetic plate 133 attached to the auxiliary magnetic steel 113, and the positioning slot 132 is opened in the auxiliary magnetic plate 133. Compared with the main magnetic plate 131, the structure of the auxiliary magnetic plate 133 may have more changes, for example, the auxiliary magnetic plate 133 may be an annular magnetic plate, may be a plurality of magnetic plates separately disposed on each auxiliary magnetic steel 113, or may be a special-shaped magnetic plate having an outer contour larger than that of the auxiliary magnetic steel 113. The positioning groove 132 is formed in the auxiliary magnetic conductive plate 133, so that the position of the positioning groove 132 can be varied.

The auxiliary magnetic conducting plate 133 is ring-shaped with a central hole 134, the main magnetic conducting plate 131 is arranged in the central hole 134 and is arranged at intervals with the auxiliary magnetic conducting plate 133, the inner wall of the magnetic conducting plate forming the central hole 134 is recessed towards the direction far away from the main magnetic conducting plate 131 to form the positioning groove 132, the positioning strut 53 is inserted into the positioning groove 132, the positioning strut 53 and the main magnetic steel 111 are arranged at intervals to form a gap 112, and the voice coil 33 of the vibration system 3 is inserted into the gap 112. The magnetic yoke 5 is made of a magnetic conductive material, and a magnetic field with a certain intensity is formed in a gap 112 between the positioning pillar 53 and the main magnetic steel 111, and the magnetic field can interact with a magnetic field generated by electrifying the voice coil 33 to push the voice coil 33 to move. The positioning pillars 53 are spaced from the main magnet steel 111, so that the magnetic flux of the magnetic circuit system 1 is increased.

Furthermore, the number of the auxiliary magnetic steels 113 and the number of the positioning pillars 53 are two, the two auxiliary magnetic steels 113 are disposed on two opposite sides of the main magnetic steel 111, the side wall of the main magnetic steel 111 includes a first side surface spaced from the auxiliary magnetic steels 113 and a second side surface connected to the two first side surfaces, and the two positioning pillars 53 are disposed at intervals from the second side surfaces. The side wall of the main magnet steel 111 is a surface arranged along the sound emitting direction. The positioning pillars 53 and the auxiliary magnetic steels 113 are arranged on different sides of the main magnetic steel 111, so that enough space is reserved for arranging the auxiliary magnetic steels 113.

Referring to fig. 4, 5 and 6, the auxiliary magnetic conductive plate 133 is a ring shape having a central hole 134, the main magnetic conductive plate 131 is disposed in the central hole 134 and spaced from the auxiliary magnetic conductive plate 133, the auxiliary magnetic conductive plate 133 is recessed from the outer wall of the magnetic conductive plate of the main magnetic conductive plate 131 toward the direction close to the main magnetic conductive plate 131 to form the positioning slot 132, and the positioning support 53 is inserted into the positioning slot 132. The difference from the previous embodiment is that the positioning groove 132 is formed on the outer wall of the auxiliary magnetic conductive plate 133 in this embodiment. In the case of fixing the same magnetic steel assembly 11, when the positioning groove 132 is formed in the outer wall of the auxiliary magnetic conductive plate 133, the size of the auxiliary magnetic conductive plate 133 may be smaller and the size of the magnetic yoke 5 may be larger than when the positioning groove 132 is formed in the inner wall of the auxiliary magnetic conductive plate 133; accordingly, when the positioning groove 132 is formed on the inner wall of the auxiliary magnetic conductive plate 133, the size of the auxiliary magnetic conductive plate 133 may be larger and the size of the magnetic yoke 5 may be smaller than when the positioning groove 132 is formed on the outer wall of the auxiliary magnetic conductive plate 133. One skilled in the art can open the positioning slot 132 on the secondary magnetic conductive plate 133 according to the requirement.

Further, an avoidance hole 1132 for avoiding the positioning strut 53 is formed in the auxiliary magnetic steel 113. On the basis of ensuring that the sizes of the magnetic yoke 5 and the auxiliary magnetic conductive plate 133 are small enough, the volume of the auxiliary magnetic steel 113 is increased as much as possible, and the magnetic flux is increased.

The secondary magnetic steel 113 is an annular magnetic steel arranged around the primary magnetic steel 111, so that the volume of the secondary magnetic steel 113 is increased and the magnetic flux is increased in a limited space.

Referring to fig. 2 and 9, in an embodiment, a pressure relief opening 112 is formed in the housing 10, the vibration system 3 includes a diaphragm 31 fixed to the housing 10 and a voice coil 33 driving the diaphragm 31 to vibrate and generate sound, and a flow guiding space 20 is formed between the diaphragm 31 and the housing 10. The surface of the bottom plate 51 far away from the vibration system 3 is provided with an airflow groove 52 communicated with the vent hole 54, and a second airflow channel communicated with the air guide space 20 and the pressure relief opening 112 is formed between the airflow groove 52 and the casing 10.

The pressure relief port 102 is covered with a dust-proof film 107 to prevent foreign matters from entering the sound unit 30. The sound unit 30 further includes conductive terminals 7 electrically connected to the voice coil 31.

The second airflow channel is communicated with the flow guiding space 20 and the pressure relief opening 102, so that in the vibration process of the diaphragm 31, the air pressure of the flow guiding space 20 can be balanced with the outside through the second airflow channel and the pressure relief opening 102, and the vibration sound production of the diaphragm 31 is facilitated; the air flow groove 52 is formed in the magnetic yoke 5, so that other ventilation structures are prevented from being arranged on the magnetic circuit system 1, the magnetic flux of the magnetic circuit system 1 is ensured, and the acoustic performance of the sound generating unit 100 is improved; the airflow groove 52 and the housing 10 form a first flow guide channel, so that other channels for airflow circulation are not reserved between the magnetic yoke 5 and the housing 10, and the product thinning arrangement of the sound generating unit 100 is facilitated.

The pressure relief port 102 is covered with a dust-proof film 107 to prevent foreign matters from entering the sound unit 30. The bottom plate 51 is provided with a vent hole 54, the magnetic conduction plate assembly 13 and the magnetic steel assembly 11 are provided with a first air flow passage 14 which is opened towards the vibration system 3, the vent hole 54 is communicated with the first air flow passage 14 and the pressure relief opening 102, and the air flow groove 52 is communicated with the vent hole 54. So that the air pressure on the side of the diaphragm 31 near the yoke 5 during vibration of the diaphragm 31 can be balanced with the outside through the second air flow passage and the first air flow passage 14 at the same time.

Still further, the diaphragm 31 includes a central portion 311, a corrugated portion 313 and a fixing portion 315 that are sequentially arranged from inside to outside, the fixing portion 315 is connected to the casing 10, the flow guiding space 20 includes a first vibration cavity 21 surrounded by the corrugated portion 313, the casing 10 and the magnetic circuit system 1, and a second vibration cavity 22 between the central portion 311 and the magnetic circuit system 1, the first air flow channel 14 communicates the second vibration cavity 22 and the vent hole 54, and the second air flow channel communicates the first vibration cavity 21 and the vent hole 54. One end of the voice coil 33 is connected to the central portion 311, that is, the flow of the air current between the first vibration cavity 21 and the second vibration cavity 22 may be affected by the voice coil 33 due to the disposition of the voice coil 33. In this embodiment, the air pressure at the side of the corrugated rim portion 313 close to the magnetic yoke 5 is mainly balanced by the second air flow channel, and the air pressure at the side of the central portion 311 close to the magnetic yoke 5 is mainly balanced by the first air flow channel 14, so as to avoid the occurrence of the vibration of the voice coil 33 due to the flow of the air flow between the first vibration cavity 21 and the second vibration cavity 22, and avoid the difficulty in air pressure balance in any space of the inner side and the outer side of the voice coil 33 due to the single air flow channel.

The number of the air flow grooves 52 is plural, and the air flow grooves 52 are arranged two by two symmetrically along the radial axis of the vent hole 54. The pressure relief port 102, the first air flow path 14, and the vent hole 54 are coaxially arranged, thereby facilitating the rapid flow of the air flow in the space of the center portion 311 on the side close to the magnetic yoke 5. When the diaphragm 31 vibrates to compress air in the sound generating unit 30, the air flow flows in the direction of the dotted arrow shown in fig. 2.

Referring to fig. 7, 8 and 9, the number of the sound units 30 is two, the vibration systems 3 of the two sound units 30 are disposed opposite to each other, one of the two sound units 30 is a bass sound unit, and the other is a bass sound unit or a treble sound unit. Those skilled in the art can select which sound units the two sound units 30 are respectively. When the full-frequency effect is needed to be realized, the auditory experience of a user is increased, and a bass sounding unit and a treble sounding unit can be combined; when the bass effect needs to be enhanced, the low frequency is more vigorous, and the combination of double bass sounding units can be adopted.

Referring to fig. 10 and 11, the present invention further provides an earphone, which includes the sound generating unit 100.

The specific structure of the sounding unit 100 refers to the above embodiments, and since the earphone adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here. The headset may in particular be an in-ear headset or an in-ear headset.

Referring to fig. 9 and 10, the earphone includes a housing 200 adapted to the concha cavity of the user, a top of the housing 200 is an end of the earphone contacting with the top of the concha cavity of the user, a bottom of the housing 200 is an end of the earphone contacting with the bottom of the concha cavity of the user, and a first sound outlet 201 facing the external auditory canal of the user is formed in the housing 200. The casing 10 includes an upper casing 101, a middle casing 103 and a lower casing 105 which are connected in sequence, the two sound generating units 30 are respectively accommodated in the upper casing 101 and the lower casing 105, a front cavity 40 is formed between the vibrating diaphragms 31 of the two sound generating units 30, and a second sound outlet 104 is formed on the middle casing 103 and communicates with the first sound outlet 201 and the front cavity 40.

In one embodiment, the casing 10 further includes fixing rings 109 connected to opposite ends of the middle case 105, and the diaphragms 31 of the two sound emitting units 30 are fixed to the fixing rings 109 and the middle case 105, respectively. The sub magnetic conductive plate 133 is connected to the fixing ring 109, so that the sub magnetic conductive plate 133 is fixed in positional relationship with the middle case 105. The size of the fixing ring 109 can be changed to fix the diaphragms 31 with different sizes on the housing 10. For example, when the sound unit 30 is a high-pitch sound unit, the size of the diaphragm 31 is small, and the size of the corresponding fixing ring 109 is reduced; when the sound unit 30 is a bass sound unit, the size of the diaphragm 31 is larger, and the size of the corresponding fixing ring 109 is increased. The size of the diaphragm 31 is such that the size of the diaphragm 31 does not represent the size of the actual diaphragm 31, as compared to the size of the bass sound unit. In the present embodiment, both the upper case 101 and the lower case 105 are metal cases.

Referring to fig. 10, two sound units 30 are stacked in a direction perpendicular to the bottom of the housing 200 and to the top of the housing 200.

Referring to fig. 11, two sound units 30 are stacked along the direction from the bottom of the housing 200 to the top of the housing 200. A person skilled in the art can determine how to arrange the positional relationship of the two sound emitting units 30 in the housing 200 according to the space reserved for the sound emitting unit 100 in the housing 200 and the size of the sound emitting unit 100.

The above is only the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are in the utility model discloses a conceive, utilize the equivalent structure transform that the content of the specification and the attached drawings did, or directly/indirectly use all to include in other relevant technical fields the patent protection scope of the present invention.

Claims (11)

1. The utility model provides a sound production monomer, its characterized in that, sound production monomer includes the casing and locates sound production unit in the casing, sound production unit include magnetic yoke, magnetic circuit and with magnetic circuit corresponds the vibration system that sets up, the magnetic yoke include the bottom plate and certainly the bottom plate location pillar that extends of buckling, magnetic circuit locates including pasting the magnetic steel assembly of bottom plate is located with pasting the magnetic steel assembly keeps away from the magnetic conductive plate subassembly of bottom plate one side, be equipped with on the magnetic conductive plate subassembly with location pillar complex constant head tank.

2. The single sound-generating unit according to claim 1, wherein the magnetic steel assembly includes a main magnetic steel and an auxiliary magnetic steel forming a magnetic gap with the main magnetic steel, the magnetic conductive plate assembly includes a main magnetic plate attached to the main magnetic steel and an auxiliary magnetic plate attached to the auxiliary magnetic steel, and the positioning slot is opened in the auxiliary magnetic conductive plate.

3. The single sound-generating unit according to claim 2, wherein the secondary magnetic conductive plate is annular and has a central hole, the primary magnetic conductive plate is disposed in the central hole and spaced from the secondary magnetic conductive plate, the inner wall of the magnetic conductive plate forming the central hole is recessed in a direction away from the primary magnetic conductive plate to form the positioning slot, the positioning pillar is inserted into the positioning slot, the positioning pillar is spaced from the primary magnetic steel to form a gap, and the voice coil of the vibration system is inserted into the gap.

4. The sounding unit as claimed in claim 3, wherein the number of the secondary magnetic steels and the number of the positioning pillars are two, the two secondary magnetic steels are disposed on opposite sides of the primary magnetic steel, the sidewall of the primary magnetic steel includes a first side surface spaced apart from the secondary magnetic steels and a second side surface connecting the two first side surfaces, and the two positioning pillars are disposed spaced apart from the second side surface.

5. The single sound-generating unit according to claim 2, wherein the secondary magnetic conductive plate is annular and has a central hole, the primary magnetic conductive plate is disposed in the central hole and spaced from the secondary magnetic conductive plate, the secondary magnetic conductive plate is far away from the outer wall of the magnetic conductive plate of the primary magnetic conductive plate and is recessed toward the primary magnetic plate to form the positioning groove, and the positioning pillar is inserted into the positioning groove.

6. The sounding unit as claimed in claim 5, wherein the secondary magnetic steel has an avoiding hole formed thereon for avoiding the positioning pillar.

7. The sound generating unit as claimed in claim 6, wherein the secondary magnetic steel is an annular magnetic steel disposed around the primary magnetic steel.

8. The sounding unit as claimed in any one of claims 1 to 7, wherein the casing has a pressure relief opening, the bottom plate has a vent hole, the magnetic conductive plate assembly and the magnetic steel assembly have a first air flow channel with an opening facing the vibration system, and the vent hole communicates the first air flow channel with the pressure relief opening.

9. The sound generating unit as claimed in claim 8, wherein the surface of the base plate remote from the vibration system is formed with an air flow groove communicating with the vent hole, and a second air flow passage is formed between the air flow groove and the housing.

10. The sounding unit according to any one of claims 1 to 7, wherein the number of the sounding units is two, the vibration systems of the two sounding units are disposed opposite to each other, and one of the two sounding units is a bass sounding unit and the other is a bass sounding unit or a treble sounding unit.

11. A headset, characterized in that the headset comprises a sound-emitting cell according to any one of claims 1 to 10.

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