Earphone

Abstract

The utility model discloses an earphone, the earphone comprises a sound production part, the sound production part is arranged in an auricular conchae cavity in a wearing state, and the sound production part comprises a first shell, a second shell and a loudspeaker assembly. The loudspeaker assembly comprises an annular supporting assembly and two vibration assemblies. The two vibration assemblies are respectively provided with protruding parts which protrude out of the annular supporting assembly in the axial direction and are arranged back to back, the loudspeaker assembly is matched with the first shell and the second shell to form two first acoustic cavities on the peripheries of the two protruding parts, and the annular supporting assembly is provided with a split face perpendicular to the axial direction. The first shell is provided with two pressure relief holes, and the two pressure relief holes are formed in the two sides of the split and communicate with the corresponding first acoustic cavities and the external environment correspondingly. By means of the mode, the pressure relief effect can be improved, the sound production effect of the earphone can be improved, and the structural strength of the first shell can be improved so as to improve the structural strength of the earphone.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and in particular to headphones. Background Technology

[0002] With the increasing prevalence of electronic devices, they have become indispensable social and entertainment tools in people's daily lives, and people's demands for these devices are also rising. Headphones and smart glasses, for example, are widely used in daily life, working in conjunction with mobile phones, computers, and other terminal devices to provide users with an auditory feast. Since the pressure relief effect inside headphones affects their sound output, improving the pressure relief effect is a pressing technical problem that needs to be solved. Utility Model Content

[0003] To solve the above-mentioned technical problems, one technical solution adopted in this application is to provide an earphone, which includes a sound-emitting part, a backing part, and an elastic connecting part connected between the sound-emitting part and the backing part. In the wearing state, the sound-emitting part is disposed in the concha cavity, the backing part abuts against the back side of the auricle, and the elastic connecting part is wrapped around the periphery of the helix. The sound-emitting part includes a first shell, a second shell, and a speaker assembly, and the elastic connecting part is connected to the first end of the first shell.

[0004] The loudspeaker assembly includes an annular support assembly and two sets of vibrating assemblies spaced apart on the annular support assembly along its axial direction.

[0005] The two sets of vibration components each have a protrusion that protrudes from the annular support component along the axial direction and is arranged opposite to each other. The speaker assembly cooperates with the first housing and the second housing to form two first acoustic cavities around the two protrusions. The first housing has two pressure relief holes, which are spaced apart and each corresponds to a first acoustic cavity, and are respectively connected to the corresponding first acoustic cavity and the external environment.

[0006] In some embodiments, the speaker assembly is partially inserted into the first housing from the second end of the first housing in a radial direction perpendicular to the axial direction, the annular support assembly abuts against the inner wall surface of the first housing, the second housing is assembled with the second end of the first housing, and the first end and the second end are disposed opposite to each other;

[0007] The radial dimensions of the two protrusions are smaller than the radial dimensions of the annular support assembly. The annular support assembly has a split surface perpendicular to the axial direction, and two pressure relief holes are spaced apart on both sides of the split surface.

[0008] In some embodiments, the two pressure relief holes are arranged symmetrically with respect to the split surface.

[0009] In some embodiments, the annular support assembly comprises a connecting ring and two yokes, two sets of vibration assemblies are respectively arranged on the two yokes, the two yokes are fixed to the two ends of the connecting ring in an assembled manner along the axial direction, and the connecting ring is in abutment with the first shell.

[0010] In some embodiments, the shortest interval distance of the two pressure relief holes along the axial direction is not less than the width of the connecting ring.

[0011] In some embodiments, each set of vibration assemblies respectively comprises a diaphragm supported on a corresponding yoke, a magnetic circuit assembly, and a voice coil connected to the diaphragm, the magnetic circuit assembly forms a protruding portion, and the yoke is provided with a communication hole in communication with the first acoustic cavity and the diaphragms of the two sets of vibration assemblies on the opposite sides of the diaphragms.

[0012] In some embodiments, the shortest distance between the pressure relief hole and the communication hole is between 0.1mm and 3mm.

[0013] In some embodiments, as viewed along the axial direction, the annular support assembly and the inner wall surface of the first shell on the side close to the abutting portion form a first abutting region, and the two pressure relief holes are located between the first abutting region and the first end.

[0014] In some embodiments, in at least a region between the first abutting region and the first end, the annular support assembly and the inner wall surface of the first shell are kept apart, so that the two first acoustic cavities are in communication with each other.

[0015] In some embodiments, the annular support assembly and the inner wall surface of the first shell on the side away from the abutting portion form a second abutting region, a second acoustic cavity is further formed between the two sets of vibration assemblies, the second shell is provided with a sound outlet hole in communication with the second acoustic cavity and the external environment, the sound outlet hole is located between the first abutting region and the second abutting region, the annular support assembly is in abutment with the second shell around the sound outlet hole, so as to isolate the first acoustic cavity and the second acoustic cavity.

[0016] In some embodiments, as viewed along the axial direction, the shortest distance between the sound outlet hole and any pressure relief hole is between 8.5mm and 14mm.

[0017] In some embodiments, the elastic connecting portion further comprises a third shell assembled with the first end of the first shell, the two pressure relief holes are arranged in a strip shape, and the joint line between the third shell and the first shell is arranged at an equal distance from the long side holes of the two pressure relief holes.

[0018] In some embodiments, the earphone comprises a microphone arranged in the third shell, the third shell is provided with a sound collecting hole penetrating through the third shell to communicate with the sound collecting area of the microphone, and the distance between the sound collecting hole and any pressure relief hole is greater than 3.5mm as viewed along the axial direction.

[0019] In some embodiments, the inner wall surface of the first shell is provided with two limiting portions extending towards the ends of the two protruding portions away from each other in the axial direction, and the two pressure relief holes are located between the limiting portions and the first end when viewed in the axial direction.

[0020] In some embodiments, when the loudspeaker assembly is inserted into the first shell, the annular support assembly and the inner wall surface of the first shell form two abutting regions spaced apart from each other, the spacing direction of the two abutting regions is arranged transversely to the radial direction when viewed in the axial direction, the annular support assembly is provided with a slot at each of the two abutting regions, and the inner wall surface of the first shell is provided with a plug at each of the two abutting regions, the plug and the slot form a plug-in fit when the loudspeaker assembly is inserted into the first shell.

[0021] In some embodiments, the annular support assembly is provided with a stop block at each of the two abutting regions, and the plug and the stop block form a stop fit when the loudspeaker assembly is inserted into the first shell, so as to limit the insertion depth of the loudspeaker assembly relative to the first shell.

[0022] In some embodiments, the annular support assembly comprises a connecting ring and two baskets, two groups of vibration assemblies are arranged on the two baskets respectively, and the two baskets are fixed to the two ends of the connecting ring in an assembled manner in the axial direction, and the slot and the stop block are arranged on the connecting ring.

[0023] In some embodiments, the inner wall surface of the first shell is provided with two limiting portions extending towards the ends of the two protruding portions away from each other in the axial direction, and the two limiting portions abut the ends of the two protruding portions respectively.

[0024] In some embodiments, the inner wall surface of the first shell is provided with a groove at each of the two abutting regions, the plug is located in the groove, and the annular support assembly is partially located in the groove. In some embodiments, the second shell is provided with a sound outlet hole, the center line of the sound emitting portion and the center of the abutting portion is a first center line, the center line of the sound outlet hole and the center of the pressure relief hole is a second center line, and the included angle between the median plane of the second center line and the first center line is less than 30°.

[0025] The beneficial effects of the present application are: the sound generating part of the earphone in the present application includes a first shell, a second shell and a loudspeaker assembly, the loudspeaker assembly has a ring-shaped support assembly and two groups of vibration assemblies, the setting of the two groups of vibration assemblies can make the amplitude of the two groups of vibration assemblies about half of the single vibration assembly with the same output size sound, so as to make the non-linear distortion of the earphone smaller. Moreover, the two groups of vibration assemblies work synchronously, and when playing low-frequency signals, they can push more air, make the low frequency more powerful and full, create a stable sound field, and make the sound quality effect of the earphone better. Moreover, the loudspeaker assembly cooperates with the first shell and the second shell to form two first acoustic cavities outside the two protruding parts, wherein the two pressure relief holes on the first shell are respectively communicated with the two first acoustic cavities. In this way, two pressure relief holes are arranged on the first shell, and the two pressure relief holes correspond to the two groups of vibration assemblies and the two first acoustic cavities respectively, so as to communicate the two first acoustic cavities respectively to improve the pressure relief effect of the earphone, thereby improving the sound quality effect of the earphone. Moreover, compared with the setting of one long pressure relief hole communicating with the two first acoustic cavities, the setting of two pressure relief holes can reduce the size of a single pressure relief hole, thereby improving the structural strength of the first shell, making the first shell more solid, and improving the structural strength of the earphone. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic view of the front profile of the ear of a user of the present application;

[0027] Figure 2 is a schematic view of the lateral three-dimensional structure of an embodiment of the earphone provided by the present application;

[0028] Figure 3 is a schematic view of the lateral three-dimensional structure of another embodiment of the earphone shown in Figure 2

[0029] is a schematic view of the lateral three-dimensional structure of another embodiment of the earphone shown in Figure 4 Figure 2 is a schematic view of the lateral three-dimensional structure of another embodiment of the earphone shown in

[0030] Figure 5 Figure 3 is a schematic view of the cross-sectional structure of the earphone embodiment along the section line B-B shown in

[0031] Figure 6 is a schematic view of the cross-sectional structure of the sound generating part of the earphone embodiment along the section line A-A shown in Figure 2

[0032] Figure 7 Figure 4 is a schematic view of the loudspeaker assembly of the earphone embodiment shown in

[0033] Figure 8 ​​​​is Figure 4 a perspective view of a first housing in the earphone embodiment shown in FIG. 1;

[0034] Figure 9 is Figure 2 a perspective view of partial components in the earphone embodiment shown in FIG. 1;

[0035] Figure 10 is Figure 2 another side view of the earphone embodiment shown in FIG. 1. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0037] Reference to "embodiments" in the present application means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments.

[0038] The following is an exemplary description of the earphone embodiment.

[0039] In combination with Figure 1 , the ear of a user 1 can include physiological sites such as an external auditory canal 101, a concha cavity 102, and an auricle 103. The external auditory canal 101 has an ear canal opening 1011, which is specifically an entrance (i.e., an ear hole) of the external auditory canal 101 away from the tympanic membrane. In addition, the concha cavity 102 has a certain volume and depth, and the concha cavity 102 is directly connected with the external auditory canal 101, i.e., the aforementioned ear hole can be simply regarded as being located at the bottom of the concha cavity 102.

[0040] In combination with Figure 2 , the earphone 10 is an audio converter capable of receiving electrical signals from a media player or a receiver and converting the electrical signals into sound waves that can be heard by a user. In some embodiments, the earphone 10 can be an ear clip type earphone, an ear hook type earphone, or a behind-the-ear type earphone, etc.

[0041] In some embodiments, as shown in FIG. 2, the earphone 10 can include a sound generating portion 100, an abutting portion 200, and an elastic connecting portion 300 connected between the sound generating portion 100 and the abutting portion 200. Figures 2 to 10

[0042] ​The sound generating part 100 can be a sound playing device, which can convert an electric signal into a sound signal (also referred to as "sound wave" or "sound signal") and transmit it to the ear 1 of the wearer.

[0043] The elastic connecting part 300 can be an elastic piece or a spring element, which can connect the sound generating part 100 and the abutting part 200, so that the user can wear the earphone 10 on the ear 1 through the elastic connecting part 300. In the wearing state, the sound generating part 100 can be arranged in the concha cavity 102, the abutting part 200 abuts against the back side of the auricle 103, and the elastic connecting part 300 can be arranged around the periphery of the helix.

[0044] As shown in Figure 4 and Figure 5 , the sound generating part 100 can include a first shell 110, a second shell 120, and a loudspeaker assembly 130, and the elastic connecting part 300 is connected with the first end 111 of the first shell 110. The first shell 110 and the second shell 120 can be clamped with each other, and the loudspeaker assembly 130 can be arranged in the space enclosed by the first shell 110 and the second shell 120.

[0045] As shown in Figure 6 and Figure 7 , the loudspeaker assembly 130 can include a ring-shaped support assembly 131 and two groups of vibration assemblies 132 arranged on the ring-shaped support assembly 131 in the axial direction of the ring-shaped support assembly 131. The vibration assembly 132 is a component that can convert an electric signal into a corresponding sound signal, and the diaphragm in the vibration assembly 132 can vibrate under the action of an electric current to generate sound waves, thereby realizing the sound playing function of the sound generating part 100. The ring-shaped support assembly 131 can connect and fix the two groups of vibration assemblies 132.

[0046] By arranging two groups of vibration assemblies 132 in the earphone 10, the two groups of vibration assemblies 132 can realize a large diaphragm area in a relatively small space, thereby increasing the sound quality of the earphone 10. Moreover, the synchronous vibration of the two groups of vibration assemblies 132 can increase the vibration effect at the corresponding position of the diaphragm, making the sound clearer and louder, and increasing the upper limit of the sound output of the earphone 10. In the case of the same output sound size, the amplitude of the two groups of vibration assemblies 132 is about half of that of a single group of vibration assemblies 132 with the same output sound size, and the smaller the amplitude, the smaller the nonlinear distortion. Therefore, in the case of the same output volume, the output sound distortion of the two groups of vibration assemblies 132 is smaller. At the same time, the synchronous work of the two groups of vibration assemblies 132 can push more air when playing low-frequency signals, making the low frequency more powerful and full, and creating a stable sound field, thereby making the sound quality of the earphone 10 better.

[0047] In some embodiments, the speaker assembly 130 can be partially inserted into the first housing 110 along a radial direction perpendicular to the axial direction from the second end 112 of the first housing 110, the annular support assembly 131 abuts the inner wall surface of the first housing 110, and the second housing 120 is assembled with the second end 112 of the first housing 110, the first end 111 being opposite to the second end 112. As an example, the axial direction can be as shown by the arrow C in Figure 5 and Figure 6 the radial direction from the second end 112 of the first housing 110 towards the inside of the first housing 110 can be as shown by the arrow D in Figure 4 and Figure 5 .

[0048] As shown in Figure 6 and Figure 7 , the two groups of vibration assemblies 132 can respectively have protruding portions 1321 protruding from the annular support assembly 131 along the axial direction C and opposite to each other. The radial dimension of the two protruding portions 1321 is smaller than the radial dimension of the annular support assembly 131. As an example, the radial dimension of the protruding portions 1321 can be as shown by the length L1 in Figure 6 , and the radial dimension of the annular support assembly 131 can be as shown by the length L2 in Figure 6 .

[0049] In some embodiments, in a radial direction of the speaker assembly 130, the periphery of the annular support assembly 131 exceeds the periphery of the two protruding portions 1321, and the speaker assembly 130 abuts the inner wall surface of the first housing 110 through the annular support assembly 131.

[0050] In some embodiments, as shown in Figure 5 and Figure 6 , the speaker assembly 130 can cooperate with the first housing 110 and the second housing 120 to form two first acoustic cavities 1301 outside the periphery of the two protruding portions 1321. The first housing 110 is provided with two pressure relief holes 113, which are spaced apart and each correspond to one of the first acoustic cavities 1301, and respectively communicate the corresponding first acoustic cavity 1301 with the external environment.

[0051] Specifically, since the periphery of the two protruding portions 1321 opposite to each other along the axial direction C forms the two first acoustic cavities 1301, the two first acoustic cavities 1301 are spaced apart along the axial direction A. The two pressure relief holes 113 on the first housing 110 are spaced apart and respectively communicate the corresponding first acoustic cavities 1301, i.e., the two pressure relief holes 113 are correspondingly arranged at the positions of the first housing 110 corresponding to the two first acoustic cavities 1301.

[0052] In this way, the two pressure relief holes 113 are in communication with the two first acoustic cavities 1301, thereby improving the pressure relief effect. In addition, the two pressure relief holes 113 are arranged on opposite sides of the middle surface, thereby improving the freedom of arrangement of the pressure relief holes 113. Since the pressure relief holes 113 have a certain area requirement, the pressure relief area required by the two sets of vibration assemblies 132 is certain. Therefore, the two small pressure relief holes 113 are easier to waterproof and dustproof than one large pressure relief hole 113. In addition, the two small pressure relief holes 113 arranged on opposite sides of the middle surface have higher structural strength than one large pressure relief hole 113 arranged on the edge of the middle surface, thereby making the first shell 110 more solid and reducing the entry of moisture, dust and other impurities into the first acoustic cavities 1301 to corrode and damage the elements inside the first shell 110, thereby improving the reliability and durability of the earphone 10.

[0053] In some embodiments, as shown in FIG. 13A, the annular support assembly 131 has a middle surface arranged perpendicular to the axial direction A, and the two pressure relief holes 113 are arranged on opposite sides of the middle surface. Figures 3 to 5 As an example, the middle surface can be arranged as shown in FIG. 13B. Figure 3 As shown in FIG. 13C, Figure 5 is the structure of the earphone 10 in the middle surface LF as viewed along the axial direction C.

[0054] Arranging the two pressure relief holes 113 on opposite sides of the middle surface LF can make the two pressure relief holes 113 not occupy the space on the first shell 110 corresponding to the middle surface LF, so that the annular support assembly 131 can be arranged to abut against the first shell 110 through the middle position of the two pressure relief holes 113 or other elements, thereby improving the space utilization inside the first shell 110.

[0055] In addition, arranging the two pressure relief holes 113 on opposite sides of the middle surface LF can make the two pressure relief holes 113 extend from the edges of the two sets of vibration assemblies 132 to the middle position of the first acoustic cavities 1301 close to the vibration assemblies 132. In this way, the two pressure relief holes 113 are closer to the center of the two sets of vibration assemblies 132, thereby making the two pressure relief holes 113 better for pressure relief of the first acoustic cavities 1301, and making the vibration of the vibration assemblies 132 more uniform and stable, thereby reducing the fluctuation of the sound generated, improving the vibration consistency of the two sets of vibration assemblies 132, and improving the sound quality of the earphone 10.

[0056] In some embodiments, the two pressure relief holes 113 can be arranged symmetrically with respect to the middle surface LF. In other words, the two pressure relief holes 113 have the same shape and are arranged symmetrically with respect to the middle surface LF. In addition, the two sets of vibration assemblies 132 can also be arranged symmetrically with respect to the middle surface LF.

[0057] In this way, the two pressure relief holes 113 can be arranged to communicate with the corresponding first acoustic cavity 1301, so that the pressure relief effects of the two pressure relief holes 113 can be made as consistent as possible, so that the resonance peaks of the two groups of vibration assemblies 132 when emitting sound can be made as consistent as possible, so that the fluctuations of the two groups of vibration assemblies 132 can be reduced, and thus the sound emission effect of the earphone 10 can be improved.

[0058] In some embodiments, as shown in Figure 6 and Figure 7 The annular support assembly 131 can include a connecting ring 1311 and two yokes 1312, and the two groups of vibration assemblies 132 are arranged on the two yokes 1312, respectively. The two yokes 1312 are fixed to the two ends of the connecting ring 1311 in an assembled manner along the axial direction A, and the connecting ring 1311 abuts against the first shell 110.

[0059] Specifically, the two yokes 1312 can be arranged opposite to each other with respect to the median plane LF along the axial direction A. The connecting ring 1311 is arranged at the middle position between the two yokes 1312 to connect the two yokes 1312, so as to combine the two yokes 1312 and the two groups of vibration assemblies 132 to form the loudspeaker assembly 130. The connecting ring 1311 can abut against the first shell 110 along any radial direction perpendicular to the axial direction A, so that the loudspeaker assembly 130 is fixedly abutted against the first shell 110.

[0060] In this way, the annular support assembly 131 can facilitate the preparation and assembly of the loudspeaker assembly 130, so as to reduce the difficulty of the preparation and assembly of the loudspeaker assembly 130, and thus reduce the difficulty of the preparation of the earphone 10.

[0061] In some embodiments, the shortest interval distance of the two pressure relief holes 113 along the axial direction A is not less than the width of the connecting ring 1311. As an example, the shortest interval distance of the two pressure relief holes 113 along the axial direction A can be as shown by the distance L3 in Figure 8 , and the width of the connecting ring 1311 along the axial direction A can be as shown by the distance L4 in Figure 6 .

[0062] Since the connecting ring 1311 abuts against the first shell 110 along any radial direction, if the shortest interval distance of the two pressure relief holes 113 along the axial direction A is less than the width of the connecting ring 1311, the connecting ring 1311 will block part of the pressure relief holes 113 inside the first shell 110, thereby affecting the pressure relief effect of the pressure relief holes 113. Moreover, the shell width at the middle position of the two pressure relief holes 113 is too small, which will cause the structural strength of the first shell 110 to be too small. When the connecting ring 1311 abuts against the shell at the middle position of the two pressure relief holes 113, or when the first shell 110 is extruded by pressure, the shell at this part is prone to breakage.

[0063] Therefore, the shortest interval distance of the two pressure relief holes 113 along the axial direction A is not less than the width of the connecting ring 1311, so that the connecting ring 1311 will not block the two pressure relief holes 113 inside the first shell 110, thereby improving the pressure relief effect of the two pressure relief holes 113, and the structural strength of the shell at the middle position of the two pressure relief holes 113 can be improved, thereby improving the structural strength of the first shell 110.

[0064] In some embodiments, as shown in Figure 6 and Figure 7 Each group of vibration assemblies 132 can include a diaphragm 1322 supported on a corresponding yoke 1312, a magnetic circuit assembly 1323 forming the protruding portion 1321, and a voice coil 1324 connected to the diaphragm 1322, as shown in

[0065] The voice coil 1324 is configured to vibrate when current passes through the magnetic field of the magnetic circuit assembly 1323 to interact with the magnetic field, thereby generating vibrations, and drive the diaphragm 1322 to vibrate to generate sound waves. The diaphragm 1322, the magnetic circuit assembly 1323, and the yoke 1312 form an internal acoustic cavity 1325, and the communication hole 1313 on the yoke 1312 can communicate the internal acoustic cavity 1325 with the first acoustic cavity 1301 outside the protruding portion 1321.

[0066] In this way, the internal acoustic cavity 1325 can be in communication with the environment outside the earphone 10 through the communication hole 1313 on the yoke 1312, the first acoustic cavity 1301, and the pressure relief hole 113, and the air in the internal acoustic cavity 1325 can be effectively conducted to the outside, thereby effectively improving the pressure relief effect.

[0067] In some embodiments, as shown in Figure 9As shown, the shortest distance between the pressure relief hole 113 and the communication hole 1313 can be between 0.1 mm and 3 mm. For example, the shortest distance between the pressure relief hole 113 and the communication hole 1313 can be 0.1 mm, 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.6 mm, 2 mm, 2.5 mm, 2.8 mm, or 3 mm, etc. As an example, the shortest distance between the pressure relief hole 113 and the communication hole 1313 can be as shown in the middle distance L5. Figure 9

[0068] If the shortest distance between the pressure relief hole 113 and the communication hole 1313 is less than 0.1 mm, the yoke 1312 is too close to the first housing 110, and the pressure relief hole 113 is blocked by the yoke 1312 and difficult to communicate with the first acoustic cavity 1301. If the shortest distance between the pressure relief hole 113 and the communication hole 1313 is greater than 3 mm, it means that the yoke 1312 is too far from the first housing 110, which increases the volume of the first acoustic cavity 1301 and affects the pressure relief effect of the pressure relief hole 113, and also increases the size of the earphone 10.

[0069] Therefore, the shortest distance between the pressure relief hole 113 and the communication hole 1313 is between 0.1 mm and 3 mm, which not only makes the pressure relief hole 113 not easy to be blocked by the yoke 1312, but also reduces the volume of the first acoustic cavity 1301 and reduces the impact on the pressure relief effect of the pressure relief hole 113, and also reduces the size of the earphone 10.

[0070] In some embodiments, as shown, the inner wall surface of the annular support assembly 131 close to one side of the abutting portion 200 of the first housing 110 can form a first abutting area 1314, and the two pressure relief holes 113 are located between the first abutting area 1314 and the first end 111. Figures 5 to 8

[0071] ​​Specifically, the sound generating part 100 has a side close to the abutting part 200 and a side away from the abutting part 200. When the earphone 10 is worn, the sound generating part 100 can abut in the concha cavity 102, and the abutting part 200 abuts on the back side of the auricle 103. Therefore, in the wearing state, the side of the sound generating part 100 close to the abutting part 200 is blocked by the concha cavity 102. The inner wall surface of the first shell 110 on the side close to the abutting part 200 forms a first abutting area 1314, and the two pressure relief holes 113 are arranged between the first abutting area 1314 and the first end 111. This not only makes the two pressure relief holes 113 closer to the ear 1 in the wearing state, so that in the wearing state, dust, moisture and other impurities from the outside are less likely to enter the pressure relief holes 113 and damage the elements inside the first shell 110, but also improves the aesthetics of the earphone 10. The two pressure relief holes 113 are located between the first abutting area 1314 and the first end 111, which can reduce the influence of the opening of the pressure relief holes 113 on the structural strength of the first shell 110, thereby strengthening the strength of the first shell 110.

[0072] In some embodiments, the annular support assembly 131 is spaced apart from the inner wall surface of the first shell 110 in at least a region between the first abutting area 1314 and the first end 111, so that the two first acoustic cavities 1301 are in communication with each other. Both of the two first acoustic cavities 1301 are in communication with the pressure relief holes 113 to achieve the pressure relief function. Therefore, arranging the two first acoustic cavities 1301 in communication with each other can balance the pressure relief effect of the two first acoustic cavities 1301, thereby improving the pressure relief effect.

[0073] In some embodiments, as shown in Figure 5 and Figure 6 The annular support assembly 131 and the inner wall surface of the first shell 110 away from the abutting part 200 can form a second abutting area 1315. The two groups of vibration assemblies 132 further form a second acoustic cavity 1326. The second shell 120 can be provided with a sound outlet hole 121 communicating the second acoustic cavity 1326 with the external environment, and the sound outlet hole 121 is located between the first abutting area 1314 and the second abutting area 1315. The annular support assembly 131 surrounds the sound outlet hole 121 and abuts on the second shell 120 to isolate the first acoustic cavity 1301 and the second acoustic cavity 1326.

[0074] Specifically, the sound waves generated by the diaphragms 1322 of the two groups of vibration assemblies 132 can be transmitted out of the earphone 10 through the second acoustic cavity 1326 and the sound outlet hole 121. The sound outlet hole 121 is located between the first abutting area 1314 and the second abutting area 1315, which can reduce the influence of the opening of the sound outlet hole 121 on the strength of the second shell 120, thereby strengthening the strength of the second shell 120, and making the structure of the earphone 10 more stable.

[0075] In some embodiments, as shown in FIG. 1 1, the shortest distance between the sound hole 121 and any pressure relief hole 1 13 can be between 8.5mm-14mm when viewed along the axial direction A. Figure 10 For example, the shortest distance between any pressure relief hole 1 13 and the sound hole 121 can be 8.5mm, 9mm, 9.2mm, 9.5mm, 10mm, 10.5mm, 1 1 mm, 1 1.5mm, 12mm, 12.5mm, 13mm, or 14mm, etc. As an example, the shortest distance between the sound hole 121 and any pressure relief hole 1 13 can be shown as the middle distance L6 in FIG. 1 1. Figure 10

[0076] If the shortest distance between the sound hole 121 and any pressure relief hole 1 13 is less than 8.5mm, it means that the position of the pressure relief hole 1 13 is too close to the position of the sound hole 121, so when the earphone is worn on the ear 1 of the user, the sound hole 121 corresponds to the ear canal opening 101 1 of the user, and the pressure relief hole 1 13 is easily blocked by the ear 1, thereby affecting the pressure relief effect of the pressure relief hole 1 13. If the shortest distance between the sound hole 121 and any pressure relief hole 1 13 is greater than 14mm, it means that the pressure relief hole 1 13 is too close to the edge of the first shell 1 10, which will affect the strength of the first shell 1 10, and the pressure relief hole 1 13 is away from the center position of the vibration assembly 132, which will also affect the pressure relief effect, thereby reducing the sound quality of the earphone 10.

[0077] Therefore, the shortest distance between the sound hole 121 and any pressure relief hole 1 13 is between 8.5mm-14mm, which not only makes the pressure relief hole 1 13 not easily blocked by the ear 1, but also reduces the impact of the pressure relief hole 1 13 on the strength of the first shell 1 10, and can also improve the pressure relief effect of the pressure relief hole 1 13, thereby improving the sound quality of the earphone 10.

[0078] In some embodiments, as shown in FIG. 1 1, the shortest distance between the sound hole 121 and any pressure relief hole 1 13 can be between 8.5mm-14mm when viewed along the axial direction A. Figure 4 For example, the shortest distance between any pressure relief hole 1 13 and the sound hole 121 can be 8.5mm, 9mm, 9.2mm, 9.5mm, 10mm, 10.5mm, 1 1 mm, 1 1.5mm, 12mm, 12.5mm, 13mm, or 14mm, etc. As an example, the shortest distance between the sound hole 121 and any pressure relief hole 1 13 can be shown as the middle distance L6 in FIG. 1 1.

[0079] ​Specifically, as viewed along the axial direction A, it can be seen that the long sides of the two pressure relief holes 113 are arranged in parallel with the joint lines between the third housing 310 and the first housing 110. By arranging the shape of the two pressure relief holes 113 in this way, the strength between the long sides of the two pressure relief holes 113 and the first end 111 of the first housing 110 can be enhanced, thereby enhancing the structural strength of the first housing 110. Moreover, this arrangement enables the two independently arranged pressure relief holes 113 to be closer to the communication hole 1313 of the back chassis 1312 of the vibration assembly 132, thereby enabling the resonance peak of the first acoustic cavity 1301 to be at a higher frequency, making the frequency response of the entire first acoustic cavity 1301 flatter in a wider frequency band and the phase fluctuation smaller, so as to facilitate reducing the sound leakage effect of the earphone 10.

[0080] Of course, in other embodiments, the shape of the pressure relief hole 113 can also be arranged in a circular, triangular, or irregular shape, etc.

[0081] In some embodiments, as shown in Figure 4 and Figure 5 , the earphone 10 can include a microphone 400, which can be arranged in the third housing 310. The third housing 310 is provided with a sound collecting hole 311 that penetrates through the third housing 310 to communicate with the sound collection area of the microphone 400. The microphone 400 can collect the sound outside the earphone 10 through the sound collecting hole 311. The sound outside the earphone 10 can be, for example, the user's speaking sound, the sound of a whistle, the sound of a bell, the sound of surrounding people, or the sound of traffic control, etc.

[0082] As shown in Figure 10 , when viewed along the axial direction A, the distance between the sound collecting hole 311 and any pressure relief hole 113 is greater than 3.5 mm. For example, when viewed along the axial direction A, the distance between the microphone 400 and any pressure relief hole 113 is 3.8 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 8 mm, or 10 mm, etc. As an example, the shortest distance between the sound hole 121 and any pressure relief hole 113 can be as shown in Figure 10 .

[0083] If the distance between the sound collecting hole 311 and any pressure relief hole 113 is less than 3.5 mm, it means that the distance between the sound collecting hole 311 and any pressure relief hole 113 is small, and the microphone 400 arranged at the sound collecting hole 311 is easy to extend from the third housing 310 to the inside of the first housing 110, thereby easily blocking the pressure relief hole 113, which can affect the pressure relief effect of the pressure relief hole 113.

[0084] Therefore, the distance between the sound hole 311 and any pressure relief hole 113 is greater than 3.5 mm, so that the pressure relief hole 113 is not easily blocked by the ear 1, thereby improving the pressure relief effect of the pressure relief hole 113, and improving the sound quality of the earphone 10.

[0085] In some embodiments, as shown in Figure 6 and Figure 8 , the inner wall surface of the first shell 110 can be provided with two limiting portions 114 extending along the axial direction A away from the ends of the two protruding portions 1321, and the two pressure relief holes 113 are located between the limiting portions 114 and the first end 111 when viewed along the axial direction A. By arranging the two pressure relief holes 113 between the limiting portions 114 and the first end 111, the influence of the opening of the two pressure relief holes 113 on the first shell 110 can be reduced, thereby improving the structural strength of the first shell 110.

[0086] In some embodiments, as shown in Figure 6 , the two limiting portions 114 respectively abut the ends of the two protruding portions 1321. Specifically, the two limiting portions 114 can respectively abut the two protruding portions 1321 in the axial direction A, thereby limiting the speaker assembly 130 in the axial direction A, thereby strengthening the structural stability inside the first shell 110 and the structural strength of the first shell 110.

[0087] In some embodiments, as shown in Figure 5 and Figure 8 , when the speaker assembly 130 is inserted into the first shell 110, the annular support assembly 131 and the inner wall surface of the first shell 110 form two abutting regions 1316 spaced apart from each other.

[0088] In some embodiments, the two abutting regions 1316 can be a first abutting region 1314 and a second abutting region 1315.

[0089] When viewed along the axial direction A, the spacing direction of the two abutting regions 1316 is crosswise arranged with the radial direction D. In other words, the direction in which the speaker assembly 130 is inserted into the first shell 110 is crosswise arranged with the spacing direction of the two abutting regions 1316. As an example, the spacing direction of the two abutting regions 1316 can be as shown by the direction of the arrow E in Figure 5 and Figure 6 .

[0090] In some embodiments, as shown in Figures 5 to 8As shown, the annular support assembly 131 can be provided with a slot 1317 at each of the two abutting regions 1316, and the inner wall surface of the first shell 110 can be provided with an insertion block 1318 at each of the two abutting regions 1316. The insertion block 1318 and the slot 1317 form a plug-in fit when the speaker assembly 130 is inserted into the first shell 110. In other words, during the process of inserting the speaker assembly 130 into the first shell 110 along the radial direction D, the insertion block 1318 of the inner wall surface of the first shell 110 and the slot 1317 of the annular support assembly 131 can form a plug-in fit, thereby achieving the limiting abutment between the annular support assembly 131 and the first shell 110.

[0091] Since the two pressure relief holes 113 are arranged on both sides of the speaker assembly 130 along the axial direction C of the first shell 110, arranging the two abutting regions 1316 along the radial direction can make the two abutting regions 1316 and the two pressure relief holes 113 not interfere with each other, thereby further achieving the abutting and fixing of the speaker assembly 130 and the first shell 110 after adjusting the positions of the two pressure relief holes 113, so as to improve the structural stability inside the earphone 10.

[0092] In some embodiments, as shown in Figure 5 and Figure 7 As shown, the annular support assembly 131 is provided with a stop block 1319 at each of the two abutting regions 1316, and the insertion block 1318 and the stop block 1319 form a stop fit when the speaker assembly 130 is inserted into the first shell 110, so as to limit the insertion depth of the speaker assembly 130 relative to the first shell 110.

[0093] In some embodiments, as shown in

[0094] Moreover, the stop block 1319 and the slot 1317 can cooperate with each other so that the depth of the slot 1317 is the insertion depth of the speaker assembly 130 relative to the first shell 110. When the speaker assembly 130 is inserted into the first shell 110, the insertion block 1318 is inserted into the slot 1317 and forms a plug-in fit, and the insertion block 1318 abuts against the stop block 1319, thereby completing the assembly process of the speaker assembly 130 and the first shell 110. In this way, the speaker assembly 130 can be conveniently inserted into the first shell 110, thereby simplifying the assembly process of the earphone 10.

[0095] In some embodiments, as shown in Figure 6 andFigure 7 As shown, two groups of vibration assemblies 132 can be respectively arranged on two yokes 1312, and the two yokes 1312 can be fixed in an assembled manner at two ends of the connecting ring 1311 along the axial direction C. The slot 1317 and the stop block 1319 are arranged on the connecting ring 1311.

[0096] Specifically, the two groups of vibration assemblies 132 are arranged on the two yokes 1312, and the connecting ring 1311 connects and fixes the two yokes 1312 to connect and fix the two groups of vibration assemblies 132. The slot 1317 and the stop block 1319 are arranged on the connecting ring 1311, which not only facilitates the preparation and formation of the slot 1317 and the stop block 1319, simplifies the structure of the loudspeaker assembly 130, but also facilitates the mutual abutment and fixation of the loudspeaker assembly 130 and the first shell 110, thereby simplifying the fixed connection structure between the loudspeaker assembly 130 and the first shell 110.

[0097] In some embodiments, as shown in Figure 6 The inner wall surface of the first shell 110 can be provided with a groove 115 at each of the two abutment regions 1316, and the plug 1318 is located in the groove 115, and part of the annular support assembly 131 is located in the groove 115.

[0098] Specifically, the shape of the groove 115 corresponds to the shape of the partial periphery of the annular support assembly 131 in the radial direction. During the process of inserting the loudspeaker assembly 130 into the first shell 110, the partial periphery of the annular support assembly 131 cooperates with the groove 115 to be inserted into the groove 115, and the plug 1318 is also inserted into the slot 1317. By providing the groove 115, the position of the annular support assembly 131 can be easily positioned during assembly, facilitating the assembly of the loudspeaker assembly 130 and the first shell 110. Moreover, the first shell 110 can further limit the position of the annular support assembly 131 to further fix the loudspeaker assembly 130, thereby improving the structural stability of the earphone 10.

[0099] In some embodiments, as shown in Figure 10 The second shell 120 is provided with a sound outlet hole 121, the line connecting the center of the sound generating part 100 and the center of the abutting part 200 is a first line, the line connecting the center of the sound outlet hole 121 and the center of the pressure relief hole 113 is a second line, and the included angle between the median plane of the second line and the first line is less than 30°. As an example, the first line can be as shown by the line segment HI in Figure 10 , the second line can be as shown by the line segment JK in Figure 10 , and the median plane of the second line JK can be as shown by the plane LM in Figure 10 .

[0100] For example, in some embodiments, the angle between the median plane LM of the second line JK and the first line HI can be 0°, 10°, 15°, 20°, or 25°, etc.

[0101] The second line JK is perpendicular to the median plane LM of the second line JK, and the median plane LM bisects the second line JK. Specifically, the median plane LM is the sound attenuation plane formed by the sound outlet hole 121 and the pressure relief hole 113, and the sound waves of the sound outlet hole 121 and the pressure relief hole 113 cancel each other on this plane. Therefore, when the earphone 10 is worn on the ear 1, the median plane LM needs to be as far away from the ear canal opening 1011 as possible.

[0102] In the wearing state, since the sound generating part 100 can be arranged in the concha cavity 102, and the abutting part 200 abuts against the back side of the auricle 103, the first line HI can be parallel to the thickness direction of the auricle 103, and substantially perpendicular to the direction of the ear canal opening 1011. The thickness direction of the auricle 103 and the direction of the ear canal opening 1011 can be substantially perpendicular. Since the structure of the ear 1 of each person is different, and the wearing method of the earphone 10 affects the wearing state, the first line HI can be parallel to the thickness direction of the auricle 103 means that the spatial angle between the first line HI and the thickness direction of the auricle 103 is less than 10°. The first line HI is substantially perpendicular to the direction of the ear canal opening 1011 means that the spatial angle between the first line HI and the direction of the ear canal opening 1011 is in the range of 80°-100°.

[0103] Therefore, it can be concluded that setting the angle between the median plane LM of the second line JK and the first line HI to be less than 30° can make the median plane LM of the first line HI have a larger spatial angle with the direction of the ear canal opening 1011, so that the median plane LM is farther away from the ear canal opening 1011, thereby reducing the influence of the sound attenuation plane of the sound outlet hole 121 and the pressure relief hole 113 on the sound quality transmitted into the ear canal opening 1011 of the user, and increasing the listening effect.

[0104] In summary, the sound generating part in the earphone in the present application comprises a first shell 110, a second shell 120 and a loudspeaker assembly 130, the loudspeaker assembly 130 has an annular support assembly 131 and two sets of vibration assemblies 132, wherein the setting of the two sets of vibration assemblies 132, compared with the setting of only one vibration assembly 132, the amplitude of the two sets of vibration assemblies 132 can be about half of the single vibration assembly 132 with the same output size sound, so that the non-linear distortion of the earphone 10 can be smaller. Moreover, the two sets of vibration assemblies 132 work synchronously, and when playing low-frequency signals, they can push more air, making the low frequency more powerful and full, and can create a stable sound field, so that the sound quality effect of the earphone 10 is better. Moreover, the loudspeaker assembly 130 cooperates with the first shell 110 and the second shell 120 to form two first acoustic cavities 1301 outside the two protruding parts 1321, wherein the two pressure relief holes 113 on the first shell 110 are respectively communicated with the two first acoustic cavities 1301. In this way, the two pressure relief holes 113 are arranged on the first shell 110, and the two pressure relief holes 113 correspond to the two sets of vibration assemblies 132 respectively and correspond to the two first acoustic cavities 1301 respectively, which can not only communicate the two first acoustic cavities 1301 respectively to improve the pressure relief effect of the earphone 10, thereby improving the sound quality effect of the earphone 10, but also compared with the setting of one pressure relief hole 113 with a relatively long size communicating the two first acoustic cavities 1301, the setting of two pressure relief holes 113 can reduce the size of a single pressure relief hole 113, thereby improving the structural strength of the first shell 110, so that the first shell 110 is more solid.

[0105] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An earphone, characterized by comprising: The earphone comprises a sound generating part, an abutting part, and an elastic connecting part connected between the sound generating part and the abutting part, wherein in a wearing state, the sound generating part is arranged in the concha cavity, the abutting part is in abutment with the back side of the auricle, and the elastic connecting part is arranged around the periphery of the helix, the sound generating part comprises a first shell, a second shell, and a loudspeaker assembly, and the elastic connecting part is connected with the first end of the first shell; The loudspeaker assembly comprises a ring-shaped support assembly and two groups of vibration assemblies arranged on the ring-shaped support assembly in the axial direction of the ring-shaped support assembly; The two groups of vibration assemblies each have a protruding part protruding from the ring-shaped support assembly in the axial direction and arranged opposite to each other, the loudspeaker assembly cooperates with the first shell and the second shell to form two first acoustic cavities around the two protruding parts, the first shell is provided with two pressure relief holes, the two pressure relief holes are arranged in a spaced manner and each correspond to one of the first acoustic cavities, and each of the two pressure relief holes is in communication with the corresponding first acoustic cavity and the external environment.

2. The earphone of claim 1, wherein The loudspeaker assembly is partially inserted into the first shell from the second end of the first shell in a radial direction perpendicular to the axial direction, the ring-shaped support assembly is in abutment with the inner wall surface of the first shell, the second shell is assembled with the second end of the first shell, and the first end is arranged opposite to the second end; The radial dimension of the two protruding parts is smaller than the radial dimension of the ring-shaped support assembly, the ring-shaped support assembly has a median surface arranged perpendicular to the axial direction, and the two pressure relief holes are arranged on the two sides of the median surface in a spaced manner.

3. The earphone of claim 2, wherein The two pressure relief holes are arranged symmetrically with respect to the median surface.

4. The earphone of claim 1, wherein The ring-shaped support assembly comprises a connecting ring and two yokes, the two groups of vibration assemblies are arranged on the two yokes, the two yokes are fixed to the two ends of the connecting ring in an assembled manner in the axial direction, and the connecting ring is in abutment with the first shell.

5. The earphone of claim 4, wherein The shortest interval distance of the two pressure relief holes in the axial direction is not less than the width of the connecting ring.

6. The earphone of claim 4, wherein, Each group of vibration assemblies comprises a diaphragm supported on the corresponding yoke, a magnetic circuit assembly, and a voice coil connected with the diaphragm, the magnetic circuit assembly forms the protruding part, and the yoke is provided with a communication hole in communication with the first acoustic cavity and the diaphragm of each group of vibration assemblies on the side opposite to each other.

7. The earphone of claim 6, wherein The shortest distance between the pressure relief hole and the communication hole is between 0.1 mm and 3 mm.

8. The earphone of claim 1, wherein, In the axial direction, the ring-shaped support assembly and the inner wall surface of the first shell on the side close to the abutting part form a first abutment area, and the two pressure relief holes are located between the first abutment area and the first end.

9. The earphone of claim 8, wherein, In at least a certain area between the first abutment area and the first end, the ring-shaped support assembly and the inner wall surface of the first shell are kept spaced to make the two first acoustic cavities communicate with each other.

10. The earphone of claim 8, wherein, The annular support assembly and the inner wall surface of the first shell away from the abutting portion form a second abutting area, and the two groups of vibration assemblies further form a second acoustic cavity, and the second shell is provided with a sound outlet hole communicating the second acoustic cavity with the external environment, the sound outlet hole is located between the first abutting area and the second abutting area, the annular support assembly is in abutment with the second shell around the sound outlet hole, so as to isolate the first acoustic cavity and the second acoustic cavity.

11. The earphone of claim 10, wherein, When viewed along the axial direction, the shortest distance between the sound outlet hole and any one of the pressure relief holes is 8.5-14 mm.

12. The earphone of claim 1, wherein, The elastic connecting part further comprises a third shell, the third shell is assembled with the first end of the first shell, the two pressure relief holes are arranged in a strip shape, and the joint line between the third shell and the first shell is equidistantly arranged along the long side of the two pressure relief holes.

13. The earphone of claim 12, wherein, The earphone comprises a microphone, the microphone is arranged in the third shell, the third shell is provided with a sound collecting hole, the sound collecting hole penetrates through the third shell to communicate with the sound collecting area of the microphone, and the distance between the sound collecting hole and any one of the pressure relief holes is greater than 3.5 mm when viewed along the axial direction.

14. The earphone of claim 1, wherein, The inner wall surface of the first shell is provided with two limiting portions extending along the axial direction towards the ends of the two protruding portions away from each other, and the two pressure relief holes are located between the limiting portions and the first end when viewed along the axial direction.

15. The earphone of claim 1, wherein, The loudspeaker assembly is partially inserted into the first shell along a radial direction perpendicular to the axial direction, and when the loudspeaker assembly is inserted into the first shell, the annular support assembly and the inner wall surface of the first shell form two abutting areas spaced from each other, the spacing direction of the two abutting areas is arranged transversely to the radial direction when viewed along the axial direction, the annular support assembly is provided with a slot at each of the two abutting areas, and the inner wall surface of the first shell is provided with a plug at each of the two abutting areas, the plug and the slot form a plug-in fit as the loudspeaker assembly is inserted into the first shell.

16. The earphone of claim 15, wherein, The annular support assembly is provided with a stop block at each of the two abutting areas, and the plug and the stop block form a stop fit as the loudspeaker assembly is inserted into the first shell, so as to limit the insertion depth of the loudspeaker assembly relative to the first shell.

17. The earphone of claim 16, wherein The annular support assembly comprises a connecting ring and two yokes, the two groups of vibration assemblies are arranged on the two yokes, the two yokes are fixed at the two ends of the connecting ring in an assembled manner along the axial direction, and the slot and the stop block are arranged on the connecting ring.

18. The earphone of claim 17, wherein, The inner wall surface of the first shell is provided with two limiting portions extending along the axial direction towards the ends of the two protruding portions away from each other, and the two limiting portions are respectively in abutment with the ends of the two protruding portions.

19. The earphone of claim 17, wherein, Inner wall surfaces of the first shell are respectively provided with grooves at the two abutting regions, the plug blocks are located in the grooves, and the annular support assembly parts are located in the grooves.

20. The earphone of claim 1, wherein, The second shell is provided with a sound outlet hole, a first connecting line is formed between the center of the sound generating part and the center of the abutting part, a second connecting line is formed between the center of the sound outlet hole and the center of the pressure relief hole, and the included angle between the median plane of the second connecting line and the first connecting line is less than 30°.

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