Speaker arrangement and earphones

Abstract

Loudspeaker arrangement, characterized in that it comprises: a housing assembly that is provided with a receiving space; a bone conduction core module that is provided in the recording space and generates vibrations in a first vibration direction; and an air conduction core module provided in the recording chamber, wherein the air conduction core module and the bone conduction core module are arranged accordingly in the first vibration direction, wherein the distance between the projection of the center of mass of the bone conduction core module onto a reference plane perpendicular to the first vibration direction and the projection of the center of mass of the air conduction core module onto the reference plane is less than 0.5 mm; or wherein the bone conduction core module has a first central axis extending in the first vibration direction; and wherein the distance between the center of mass of the air conduit core module and the first central axis is less than or equal to 0.5 mm.

Description

TECHNICAL AREA

[0001] The present application relates to the technical field of electronic devices, in particular to a loudspeaker arrangement and an earphone. STATE OF THE ART

[0002] Earphones are indispensable tools for social interaction and entertainment in daily life and are currently widely used. The demands placed on electronic devices are constantly increasing. Currently, earphones that combine air conduction and bone conduction technology can offer superior sound and a better user experience, which is why this type of earphone is enjoying increasing popularity.

[0003] Since bone conduction technology relies on the vibration of the earphone to transmit vibration signals to the human body, the vibration of a bone conduction loudspeaker along its axis also sets the housing assembly into vibration, meaning that both the air conduction loudspeaker and the housing assembly represent vibrational loads. An air conduction loudspeaker is typically positioned off-axis with the bone conduction loudspeaker. In this case, the mass of the air conduction loudspeaker will cause a shift in the bone conduction loudspeaker's vibration, resulting in the loudspeaker generating two moments in opposite directions and attenuating the bone conduction loudspeaker's vibration along its axis. This reduces the volume of the bone conduction component of the earphone, thereby lowering the overall volume and impairing the earphone's sound quality. REVELATION OF THE INVENTION

[0004] The present application provides a loudspeaker arrangement and an earphone which can reduce the influence of an air conduction core module on the vibration effect of a bone conduction core module, increase the volume, improve the bone conduction effect of the loudspeaker arrangement and thus improve the sound effect of the loudspeaker arrangement.

[0005] To solve the aforementioned technical problem, one technical solution employed by the present application is to provide a loudspeaker arrangement comprising a housing assembly, a bone conduction core module and an air conduction core module.

[0006] The housing assembly is provided with a receiving chamber. The bone conduction core module is located in the receiving chamber and generates vibrations in a first vibration direction. The air conduction core module is also located in the receiving chamber, with the air conduction core module and the bone conduction core module positioned sequentially in the first vibration direction.

[0007] In some embodiments, the projections of the bone conduction core module and the air conduction core module onto a reference plane perpendicular to the first vibration direction have an overlapping area.

[0008] In some embodiments, the ratio between the overlapping area and the projection area of ​​the air duct core module onto the reference plane is greater than 20%, 40%, or 60%; and / or that the ratio between the overlapping area and the projection area of ​​the bone conduction core module onto the reference plane is greater than 20%, greater than 40%, or greater than 60%.

[0009] In some embodiments, the air conduction core module is stacked with the bone conduction core module in the first vibration direction.

[0010] In some embodiments, the air conduction core module is permanently connected to the bone conduction core module.

[0011] In some embodiments, an elastic damping element is arranged between the air conduction core module and the bone conduction core module.

[0012] In some embodiments, the air conduction core module is spaced apart from the bone conduction core module in the first vibration direction.

[0013] In some embodiments, the housing assembly is provided with a partition, wherein the receiving space comprises a first receiving chamber and a second receiving chamber, which are separated from each other by the partition. The bone conduction core module is arranged in the first receiving chamber, and the air conduction core module is arranged in the second receiving chamber.

[0014] In some embodiments, the housing assembly comprises a first housing, a second housing and a third housing, wherein the second housing is joined with the first housing and, fitted with it, forms the first receiving chamber, wherein the third housing is joined with the first housing and the second housing respectively, and, fitted with the first housing, forms the second receiving chamber.

[0015] In some embodiments, the bone conduction core module has a first central axis extending in the first vibration direction; the air conduction core module generates vibrations in a second vibration direction and has a second central axis extending in the second vibration direction. The first central axis and the second central axis form an angle of 70° to 100°. The third housing is located on a side of the first housing facing away from the second housing in the first vibration direction; the third housing has a cross-sectional dimension perpendicular to the first vibration direction that gradually or stepwise decreases in a direction away from the second housing.

[0016] In some embodiments, the second housing has a contact area that, in a wearing state, is in contact with the face of a user; wherein a joining seam between the first housing and the second housing is located outside the contact area.

[0017] In some embodiments, the air duct core module generates vibrations in a second vibration direction, wherein a sound outlet opening and a pressure relief opening are provided in the housing assembly, which communicate with the second receiving chamber, wherein the sound outlet opening and the pressure relief opening are arranged in two side walls of the housing assembly, which are spaced apart from each other in the second vibration direction.

[0018] In some embodiments, the shape or dimensions of the first receiving chamber are adapted to the shape or dimensions of the bone conduction core module.

[0019] In some embodiments, at least one of the air conduction core module and the bone conduction core module is fixed relative to the housing assembly.

[0020] In some embodiments, the bone conduction core module is designed as a sealed structure, with the interior of the bone conduction core module and the receiving chamber being isolated from each other.

[0021] In some embodiments, the bone conduction core module comprises a cylindrical cover, a drive assembly, and two sealing plates; the cylindrical cover being rigidly connected to the housing assembly, the drive assembly being arranged within the cylindrical cover, and the drive assembly being used to vibrate the cylindrical cover and thereby vibrate the housing assembly. The two sealing plates are each arranged at opposite ends of the cylindrical cover and seal the cylindrical cover to form the sealed structure.

[0022] In some embodiments, the bone conduction core module comprises a vibration transmission element, wherein the drive assembly comprises a voice coil assembly and a magnet assembly, wherein the voice coil assembly is mounted on the magnet assembly, wherein the vibration transmission element firmly connects the cylindrical cover to the magnet assembly, and wherein the voice coil assembly is firmly connected to the cylindrical cover.

[0023] In some embodiments, an interior of the cylindrical cover is filled with a magnetofluid, wherein the magnetofluid occupies at least a part of the interior of the cylindrical cover.

[0024] In some embodiments, the distance between the projection of the center of mass of the bone conduction core module onto a reference plane perpendicular to the first vibration direction and the projection of the center of mass of the air conduction core module onto the reference plane is less than 0.5 mm. Alternatively, the bone conduction core module has a first central axis extending in the first vibration direction. The distance between the center of mass of the air conduction core module and the first central axis is less than or equal to 0.5 mm.

[0025] In some embodiments, the distance is 0 to 0.4 mm or 0 to 0.2 mm.

[0026] In some embodiments, the air conduit core module generates vibrations in a second vibration direction; wherein the first vibration direction and the second vibration direction form an angle of 70° to 100° or 80° to 90°.

[0027] In some embodiments, the housing assembly is provided with a first side surface, a second side surface, and a vibration transmission surface, wherein the first side surface, the second side surface, and the vibration transmission surface are not coplanar to each other, wherein the first side surface and the second side surface are spaced apart from each other in a direction perpendicular to the first vibration direction, wherein the housing assembly provides a sound outlet opening that penetrates the first side surface and communicates with the receiving chamber, and a pressure relief opening that penetrates the second side surface and communicates with the receiving chamber. The vibration transmission surface is perpendicular to the first vibration direction, and the bone conduction core module transmits vibrations to the outside via the vibration transmission surface.

[0028] To solve the aforementioned technical problem, a further solution employed in the present application consists of providing a loudspeaker arrangement comprising a housing assembly, a bone conduction core module, and an air conduction core module. The housing assembly is provided with a receiving chamber. The bone conduction core module is located in the receiving chamber and generates vibrations in a first vibration direction. The air conduction core module is also located in the receiving chamber.

[0029] The air conduction core module and the bone conduction core module are arranged in the first vibration direction, and the projections of the bone conduction core module and the air conduction core module onto a reference plane perpendicular to the first vibration direction have an overlapping area. The ratio between the overlapping area and the projection area of ​​the air conduction core module or the bone conduction core module onto the reference plane is greater than 20%, greater than 40%, or greater than 60%.

[0030] To solve the aforementioned technical problem, another solution employed by the present application is to provide an earphone comprising the loudspeaker arrangement described above.

[0031] The present application achieves the following advantageous effects: By arranging the air conduction core module and the bone conduction core module in the first vibration direction of the bone conduction core module, and by arranging the air conduction core module and the bone conduction core module in the first vibration direction and opposite each other, the mass of the air conduction core module can be more strongly concentrated on the axis of the bone conduction core module in the present application. This weakens the displacement effect of the air conduction core module on the vibration of the bone conduction core module, so that the bone conduction core module can better set the air conduction core module in motion when oscillating. Furthermore, the influence of the mass of the air conduction core module on the vibration effect of the bone conduction core module is reduced, and the volume can be increased, thereby improving the bone conduction effect of the loudspeaker arrangement.to improve the sound effect of the speaker arrangement. BRIEF DESCRIPTION OF THE FIGURES Fig. Figure 1 shows a schematic perspective structural view of the overall structure of an embodiment of an earphone of the present application; Fig. Figure 2 shows a schematic perspective structural view of an embodiment of a loudspeaker arrangement and part of an ear hook of the present application; Fig. 3a shows a schematic exploded view of the structure of an embodiment of the in Fig. 2 speaker arrangement shown; Fig. Figure 3b shows a schematic exploded view of the structure of another embodiment of the in Fig. 2 speaker arrangement shown; Fig. Figure 4 shows a schematic view of a cross-sectional structure of an embodiment of the in Fig. 2 loudspeaker arrangement shown along a section line AA; Fig. Figure 5a shows a further schematic view of the cross-sectional structure of the embodiment described in Fig. 2 loudspeaker arrangement shown along the section line AA; Fig. Figure 5b shows another schematic view of the cross-sectional structure of the embodiment described in Fig. 2 loudspeaker arrangement shown along the section line AA; Fig. Figure 6 shows another schematic perspective structural view of an embodiment of the in Fig. 2 speaker arrangement shown; Fig. Figure 7 shows a schematic view of the positional relationship between a first central axis and a second central axis in the embodiment described in Fig. 2 speaker arrangement shown; Fig. Figure 8 shows a schematic exploded view of the structure of an embodiment of the in Fig. 3a bone conduction loudspeaker shown; Fig. Figure 9 shows a schematic view of a cross-sectional structure of an embodiment of the in Fig. 8 bone conduction loudspeakers shown along a section line BB; Fig. Figure 10 shows a schematic perspective structural view of an embodiment of the in Fig. 3a air-conducting loudspeaker shown; Fig. Figure 11 shows a schematic exploded view of the structure of an embodiment of the in Fig. 10 air-conducting loudspeakers shown; Fig. Figure 12 shows a schematic exploded view of the structure of an embodiment of a further loudspeaker arrangement of the present application, as in Fig. 2 shown; Fig. Figure 13 shows a schematic view of a cross-sectional structure of an embodiment of the exemplary embodiment of the in Fig. 12 loudspeaker arrangement shown along a section line AA; Fig. Figure 14 shows a schematic view of a cross-sectional structure of a further embodiment of the exemplary embodiment described in Fig. 12 loudspeaker arrangement shown along the section line AA; Fig. Figure 15 shows a schematic view of a cross-sectional structure of another embodiment of the exemplary embodiment described in Fig. 12 loudspeaker arrangement shown along the section line AA; Fig. Figure 16 shows a schematic structural view of a vibration transmission element in the embodiment described in Fig. 8 bone conduction loudspeakers shown; Fig. Figure 17 shows a schematic exploded view of an embodiment of a further loudspeaker arrangement of the present application; Fig. Figure 18 shows a schematic view of a cross-sectional structure of an embodiment of the exemplary embodiment of the in Fig. 17 loudspeaker arrangement shown along a section line CC; Fig. Figure 19 shows a schematic view of a cross-sectional structure of a further embodiment of the exemplary embodiment described in Fig. 17 loudspeaker arrangement shown along the section line CC; Fig. Figure 20 shows a schematic view of a cross-sectional structure of another embodiment of the exemplary embodiment described in Fig. 17 loudspeaker arrangement shown along the section line CC; and Fig. 21 shows another schematic view of a cross-sectional structure of the embodiment described in Fig. 17 loudspeaker arrangement shown along the section line CC. DETAILED EXECUTION FORMS

[0032] The present application is described in further detail in connection with the drawings and the embodiments. It should be noted in particular that the following embodiments are intended only to illustrate the present application and do not, however, limit its scope. Furthermore, the following embodiments represent only some, not all, embodiments of the present application. All other embodiments that are accessible to a person skilled in the art without inventive step are within the scope of protection of the application.

[0033] The mention of "exemplarities" in this application means that the specific features, structures, or properties described in connection with these exemplary embodiments may be included in at least one exemplary embodiment of this application. What the person skilled in the art understands explicitly and implicitly is that the exemplary embodiments described in this application can be combined with further exemplary embodiments.

[0034] As in Fig. As shown in Figure 1, an earphone 1 can comprise a speaker assembly 10, an ear hook 20 and a back-of-head band 30.

[0035] The loudspeaker assembly 10 can comprise core modules, including a loudspeaker and a corresponding mounting housing, circuitry, etc. There can be two loudspeaker assemblies 10. Each loudspeaker assembly 10 is used to transmit vibrations and / or sound to the left and right ears of a user. The two loudspeaker assemblies 10 can be identical or different. For example, one loudspeaker assembly 10 may be equipped with a microphone, while the other loudspeaker assembly 10 is not. Of course, both loudspeaker assemblies 10 can also be equipped with microphones. As another example, one loudspeaker assembly 10 may be equipped with a button and a corresponding circuit board, while the other loudspeaker assembly 10 is not.The loudspeakers contained in the two loudspeaker arrangements 10 can be identical or different. The following description of one loudspeaker arrangement 10 herein can be regarded as a detailed description using one of the two loudspeaker arrangements 10 as an example.

[0036] The number of ear hooks 20 can also be two, with the two ear hooks 20 being able to be attached to the user's left and right ears respectively, so that the speaker assembly 10 can be adjusted to fit the user's face. For example, one ear hook 20 can be equipped with a battery, and the other ear hook 20 can be equipped with a control circuit, etc. One end of the ear hook 20 is connected to the speaker assembly 10, and the other end of the ear hook 20 is connected to the headband 30. The ear hook 20 can also be referred to as the carrying assembly 20.

[0037] The back-of-the-head band 30 can connect the two ear hooks 20. The back-of-the-head band 30 can be placed around the back of the user's neck or head and provide clamping force so that the two speaker assemblies 10 are clamped to either side of the user's face and the ear hooks 20 hang more securely on the user's ears. Of course, the earphone 1 can also be worn without a back-of-the-head band 30, in which case the speaker assembly 10 is worn over the ear hook 20 on the user's ear.

[0038] In some embodiments, the earphone 1 may also not include a headband assembly 30, wherein the loudspeaker arrangement 10 is worn on the user's ear via an earhook 20. Alternatively, in some embodiments, the earphone 1 may also not include an earhook 20 and may be connected to the loudspeaker arrangement 10 via a headrest structure or neckband structure, wherein the loudspeaker arrangement 10 is held close to the user's face by the headrest structure or neckband structure or is stably positioned on the outside of the user's ear.

[0039] The following mainly describes, by way of example, the loudspeaker arrangement 10 of the earphone 1 and other structures.

[0040] As in Fig. 2 to Fig. As shown in Figure 4, the loudspeaker arrangement 10 comprises a housing assembly 100, a bone conduction loudspeaker 200, and an air conduction loudspeaker 300. The housing assembly 100 can be provided with a receiving chamber 110. The air conduction loudspeaker 300 can be located in the receiving chamber 110, and the bone conduction loudspeaker 200 can be located in the receiving chamber 110.

[0041] The recording chamber 110 is formed in the housing assembly 100, wherein the recording chamber 110 houses the air conduction loudspeaker 300 and the bone conduction loudspeaker 200. The recording chamber 110 can be a single large chamber or be divided into two or more smaller chambers that may or may not communicate with each other. For example, in the Fig. In the embodiment shown in 3a, the housing assembly 100 is provided with a first receiving chamber 111 and a second receiving chamber 112, wherein the first receiving chamber 111 and the second receiving chamber 112 can be two spaces that are in communication with each other or not in communication with each other.

[0042] In some embodiments, as in Fig. As shown in Figure 3a, the housing assembly 100 can also be provided with a communication opening 113, which brings the first recording chamber 111 into communication with the second recording chamber 112. In this way, at least the first recording chamber 111 and the second recording chamber 112, as well as the communication opening 113, can together form the recording space 110. The bone conduction loudspeaker 200 can be arranged in the first recording chamber 111 and close the communication opening 113, so that the first recording chamber 111 and the second recording chamber 112 are isolated from each other. The air conduction loudspeaker 300 can be arranged in the second recording chamber 112. In further embodiments, no communication opening 113 can be provided between the first recording chamber 111 and the second recording chamber 112, while the two recording chambers are isolated from each other by the housing assembly 100 itself and are not in communication.

[0043] The air conduction loudspeaker 300 is used to transmit sound into the user's ear canal via air vibration, while the bone conduction loudspeaker 200 is used to transmit sound to the user through bone conduction vibrations. Since the second recording chamber 112, which houses the air conduction loudspeaker 300, needs to communicate with the outside world to transmit sound waves through the air, and the bone conduction loudspeaker 200 requires a tightly sealed environment to ensure the bone conduction effect, arranging the bone conduction loudspeaker 200 and the air conduction loudspeaker 300 separately in two different chambers within the recording chamber 110 effectively reduces mutual interference between them, thereby improving the sound quality of the earphone 1.In this context, tightness can be understood as the airtightness of the chamber space.

[0044] Based on the above explanations, by providing a communication opening 113 between the first recording chamber 111 and the second recording chamber 112, and by using the bone conduction loudspeaker 200 to close the communication opening 113 on one side, the usable space of the first recording chamber 111 can be expanded while ensuring a tight seal of the second recording chamber 112. This can effectively improve the ease of mounting the air conduction loudspeaker 300 and the reliability of the structural configuration. Furthermore, it can easily and effectively increase the volume of the sound chamber formed by the air conduction loudspeaker 300 in the second recording chamber 112, thereby improving the sound output effect and sound quality of the air conduction loudspeaker 300.From another perspective, while maintaining an unchanged volume of the sound chamber space, the air conduction loudspeaker 300 can be positioned closer to the side of the bone conduction loudspeaker 200, which can reduce the dimensions of the loudspeaker arrangement 10 and achieve a compact overall dimension.

[0045] In some embodiments, as in Fig. 3a and Fig. As shown in Figure 4, a sound outlet opening 114 and a pressure relief opening 115 are provided on the housing assembly 100, which communicate the second receiving chamber 112 with the external environment, wherein the sound outlet opening 114 and the pressure relief opening 115 can be spaced apart from each other.

[0046] The air transmission loudspeaker 300 is provided in the second recording chamber 112. A sound chamber (an external acoustic sound chamber) for the air transmission loudspeaker 300 can be formed in the second recording chamber 112.

[0047] By providing a communication opening 113 between the first recording chamber 111 and the second recording chamber 112, the second recording chamber 112 can be connected to the communication opening 113. The bone conduction loudspeaker 200 closes the communication opening 113 on one side of the communication opening 113 facing away from the second recording chamber 112, thus extending the sound chamber space in the second recording chamber 112 into the communication opening 113. This increases the volume of this acoustic chamber and achieves a better acoustic effect. The sound outlet opening 114 can be used to direct the sound waves generated by the air conduction loudspeaker 300 from the loudspeaker arrangement 10 to transmit them to the user's ear canal.By providing the pressure relief opening 115, which allows the second recording chamber 112 to communicate with the external environment, air can flow freely between the second recording chamber 112 and the air-conducting loudspeaker 300. This prevents the gas in the second recording chamber 112 from dampening the vibration of the air-conducting loudspeaker 300 and thus impairing its sound quality. Therefore, providing the pressure relief opening 115 can give the earphone 1 a better sound effect.

[0048] By arranging the sound outlet 114 and the pressure relief outlet 115 at a distance from each other, the mutual interference between the sound outlet 114 and the pressure relief outlet 115 can be reduced, so that the air pressure exiting the pressure relief outlet 115 does not easily impair the sound waves transmitted in the sound outlet 114, thereby improving the sound effect of the earphone 1.

[0049] In some embodiments, as in Fig. 3a and Fig. Figure 4 shows the pressure relief opening 115 connected to the second receiving chamber 112, wherein the communication opening 113 is in communication with the second receiving chamber 112, and wherein the pressure relief opening 115 can communicate with the connection opening 113 via the second receiving chamber 112.

[0050] In another embodiment, as in Fig. 3b and Fig. Figure 5b shows that the communication opening 113 is directly connected to the pressure relief opening 115, wherein the bone conduction loudspeaker 200 can also close the communication opening 113 on the side of the communication opening 113 facing the first recording chamber 111 in order to ensure the tightness of the first recording chamber 111, while at the same time the area of ​​the air inlet end of the pressure relief opening 115 can be increased to improve the pressure relief effect of the pressure relief opening 115 and thus increase the sound effect of the loudspeaker arrangement 10.

[0051] In some embodiments, as in Fig. 3a and Fig. As shown in Figure 4, the air-conducting loudspeaker 300 is arranged such that it divides the second receiving chamber 112 into a first sub-chamber 1121 and a second sub-chamber 1122, which are isolated from each other. The first sub-chamber 1121 and the second sub-chamber 1122 do not communicate with each other. The sound outlet opening 114 can communicate with the first sub-chamber 1121, while the pressure relief opening 115 can communicate with the second sub-chamber 1122. Furthermore, the communication opening 113 can communicate with the second sub-chamber 1122.

[0052] Optionally, as in Fig. As shown in Figure 3a, the air-conducting loudspeaker 300 comprises a diaphragm 310 and a drive mechanism 320, the drive mechanism 320 being connectable to the diaphragm 310. An inner sound chamber 330 can be enclosed between the diaphragm 310 and the drive mechanism 320, with one side of the diaphragm 310 facing away from the inner sound chamber 330 forming a sound chamber space, which is also the second sub-chamber 1122. The drive mechanism 320 is used, under control of electrical signals, to drive the diaphragm 310 so that it generates vibrations, thereby causing the air in the inner sound chamber 330 in the air-conducting loudspeaker 300 to vibrate and generating air-conducted sound waves that are transmitted out of the loudspeaker arrangement 10 through the first sub-chamber 1121 and the second sub-chamber 1122 (i.e., the sound chamber space) and the sound outlet opening 114.

[0053] In this case, the presence of the communication opening 113 can increase the volume of the second sub-chamber 1122, i.e., increase the volume of the sound chamber space, which in turn can improve the sound effect of the loudspeaker arrangement 10.

[0054] Specifically, during operation of the earphone 1, a portion of the sound waves generated by the air conduction loudspeaker 300 according to the air vibration principle can be transmitted through the first subchamber 1121 and the sound outlet opening 114 from the loudspeaker assembly 10. The pressure relief opening 115 allows the second subchamber 1122 to communicate with the external environment, enabling air to flow freely between the external environment and the second subchamber 1122. If the second subchamber 1122 were closed, the air in the second subchamber 1122 would dampen the vibration of the air conduction loudspeaker 300 during operation, which in turn would affect the sound quality of the air conduction loudspeaker 300.In this way, pressure equalization between the second sub-chamber 1122 and the external environment can be maintained through the pressure relief opening 115, thereby reducing the influence on the sound generation of the air conduction loudspeaker 300 and thus the influence on the sound effect of the earphone 1.

[0055] In some embodiments, one or more pressure relief openings 115 may be provided, with several pressure relief openings 115 being spaced apart from one another. Multiple pressure relief openings 115 can enhance the pressure relief effect and provide the earphone 1 with a better sound effect. Optionally, positions where at least two pressure relief openings 115 on the housing assembly 100 communicate with the external environment can be arranged on different side faces of the housing assembly 100, thereby reducing the probability of interference amplification of the pressure relief openings 115.

[0056] In some embodiments, as in Fig. 3a, Fig. 4 and Fig. As shown in Figure 5a, the housing assembly 100 comprises a first housing 120, a second housing 130, and a third housing 140. The second housing 130 and the first housing 120 can be fitted into the first receiving chamber 111 (in Fig. 4 schematically marked on the first housing 120, which, however, does not mean that the first receiving chamber 111 is only the part shown on the first housing 120). The third housing 140 and the first housing 120 can be fitted to form the second receiving chamber 112 (in Fig. 4 schematically marked on the first housing 120, which, however, does not mean that the second receiving chamber 112 is only the part shown on the first housing). The communication opening 113 can be formed on the first housing 120. A sound outlet opening 114 can be formed on the third housing 140, which brings the second receiving chamber 112 into communication with the external environment. A pressure relief opening 115 can be formed on the first housing 120, which brings the second receiving chamber 112 into communication with the external environment. Optionally, the pressure relief opening 115 can be arranged on a side of the first housing 120 facing away from the third housing 140, so that the distance between the pressure relief opening 115 and the sound outlet opening 114 is relatively large.

[0057] By forming the first receiving chamber 111 and the second receiving chamber 112 through the mutually pressed fit of the first housing 120, the second housing 130 and the third housing 140, the assembly and disassembly of the loudspeaker arrangement 10 can be facilitated and the tightness and stability of the structure of the loudspeaker arrangement 10 can also be improved.By providing the sound outlet opening 114 on the third housing 140 and the pressure relief opening 115 on the first housing 120, the distance between the sound outlet opening 114 and the pressure relief opening 115 can be increased, which can reduce the mutual interference of the sound waves transmitted through the sound outlet opening 114 and the pressure relief opening 115 respectively, reduce the probability of destructive interference of the sound waves emerging from the sound outlet opening 114 and the pressure relief opening 115 in the near field and can give the earphone 1 a better sound effect.

[0058] As in Fig. As shown in Figure 2, the earphone can comprise a carrying assembly 20 and the loudspeaker arrangement 10 described above. The carrying assembly 20 can also be referred to as the ear hook 20. Specifically, the carrying assembly 20 can be connected to the first housing 120. Connecting the carrying assembly 20 to the first housing 120 allows the carrying assembly 20 to be more tightly connected to the loudspeaker arrangement 10, so that it does not easily detach from the loudspeaker arrangement 10 during use. The position of the first housing 120 and the carrying assembly 20 can optionally correspond to the first receiving chamber 111.In particular, the support assembly 20, when mounted on the first housing 120, can point towards the first recording chamber 111, so that the pivot position of the first housing 120 relative to the support assembly 20 is closer to the first recording chamber 111, whereby, when the bone conduction loudspeaker 200 vibrates the first housing 120, the first housing can generate a larger pivoting movement with a faster pivoting speed, which can improve the sound quality of the bone conduction.

[0059] In some embodiments, as in Fig. 3a to Fig. As shown in Figure 4, the housing assembly 100 includes a partition 150, which is used to separate the first recording chamber 111 and the second recording chamber 112 from each other. The communication opening 113 can be formed in the partition 150. The bone conduction loudspeaker 200 can close the communication opening 113 on the side of the partition 150 facing the first recording chamber 111.

[0060] The partition 150 separates the first recording chamber 111 and the second recording chamber 112 from each other, further isolating the bone conduction loudspeaker 200 and the air conduction loudspeaker 300. This prevents air vibrations generated in the first recording chamber 111 when the bone conduction loudspeaker 200 contracts from affecting the air conduction loudspeaker 300 and canceling out some of the air-conducted sound waves. This prevents the bone conduction loudspeaker 200 from interfering with the transmission of air-conducted sound waves and also reduces the likelihood of collisions between the bone conduction loudspeaker 200 and the air conduction loudspeaker 300 that could damage either.Since the partition 150 separates the first recording chamber 111 and the second recording chamber 112, the ease of mounting the bone conduction loudspeaker 200 and the air conduction loudspeaker 300 can also be improved. Furthermore, it is provided that if the bone conduction loudspeaker 200 closes the communication opening 113 on the side of the partition 150 facing the first recording chamber 111, a larger volume space can be created by the communication opening 113 being in communication with the second recording chamber 112, which in turn improves the sound quality of the air conduction of the air conduction loudspeaker 300.

[0061] In some embodiments, as in Fig. Figure 4 shows that the bone conduction loudspeaker 200 rests against the partition 150 to close the communication opening 113. In other words, a surface of the bone conduction loudspeaker 200 rests directly or indirectly against the partition 150 to close the communication opening 113 and thus ensure the tightness of the first recording chamber 111.

[0062] In further embodiments, a sealing element 160 can be provided between the bone conduction loudspeaker 200 and the partition 150, wherein the sealing element 160 surrounds the communication opening 113. One side of the sealing element 160 can be in close contact with the partition 150 and surround the communication opening 113, while the opposite side can be in close contact with a wall surface of the bone conduction loudspeaker 200, so that the bone conduction loudspeaker 200 can close the communication opening 113. By providing a sealing element 160 between the bone conduction loudspeaker 200 and the partition 150, the tightness of the first receiving chamber 111 can be increased, thus enhancing the bone conduction effect.

[0063] In some embodiments, the sealing element 160 can comprise at least one sealant and one sealing ring. If the sealing element 160 is a sealant, the sealant can be applied in dots to the partition 150 around the communication opening 113 by dispensing; then the bone conduction loudspeaker 200 is pressed onto the sealant and the partition 150 to seal the communication opening 113. Since a sealing ring also provides good sealing performance, the sealing of the first receiving chamber 111 can also be improved by providing a sealing ring between the partition 150 and the bone conduction loudspeaker 200. Of course, in other embodiments, the sealing element 160 can also be a sealing plate, a soft filler material, or other elements not specifically listed in this embodiment.

[0064] In some embodiments, as in Fig. 3a, Fig. 4 and Fig. Figure 5a shows the housing assembly 100 in the first receiving chamber 111 being provided with a support wall 101, wherein the support wall 101 and the partition wall 150 together enclose a boundary space 102, wherein the bone conduction loudspeaker 200 can be arranged in the boundary space 102 and can rest against the support wall 101, wherein the support wall 101 and the partition wall 150 can be used to jointly limit the movement of the bone conduction loudspeaker 200 in the radial direction relative to the housing assembly 100.

[0065] Specifically, a direction in which the bone conduction loudspeaker 200 oscillates relative to the housing assembly 100 can be an axial direction of the bone conduction loudspeaker 200, wherein a direction perpendicular to the axial direction of the bone conduction loudspeaker 200 is a radial direction of the bone conduction loudspeaker 200, the supporting wall 101 and the partition 150 being jointly used to limit the movement of the bone conduction loudspeaker 200 in any radial direction perpendicular to its axial direction relative to the housing assembly 100. The axial direction of the bone conduction loudspeaker 200 can be defined by the two directions along line X in Fig. 3a running directions; and the radial direction of the bone conduction loudspeaker 200 can refer to the two along line Y in Fig. 3a and Fig. 4 directions, but the radial direction is not limited to these directions specifically represented by Y.

[0066] Optionally, one end of the support wall 101 can be connected to the first housing 120 or the second housing 130, and the other end extends towards the bone conduction loudspeaker 200. The support wall 101 is adapted to an outer surface of the bone conduction loudspeaker 200 to allow it to bear against the bone conduction loudspeaker 200 in the radial direction. This allows the support wall 101 and the partition 150 to jointly limit the radial movement of the bone conduction loudspeaker 200 relative to the housing assembly 100, thereby restricting the movement of the bone conduction loudspeaker 200 to the axial direction and also enabling a more compact internal structure of the loudspeaker assembly 10.

[0067] In some embodiments, as in Fig. As shown in Figure 3a, the bone conduction loudspeaker 200 has a first central axis X and is configured to generate vibrations in the direction of the first central axis X. The bone conduction loudspeaker 200 can have a circumferential side surface 201 arranged around the first central axis X, the circumferential side surface 201 closing the communication opening 113. The two directions specified by the first central axis X can also be the axial direction of the bone conduction loudspeaker 200, the bone conduction loudspeaker 200 generating vibrations in the direction of the first central axis X and transmitting sound to the user by bone conduction vibration.

[0068] Optionally, the circumferential side surface 201 of the bone conduction loudspeaker 200 can abut the support wall 101, whereby the support wall 101 and the partition wall 150 can jointly act on the circumferential side surface 201 of the bone conduction loudspeaker 200 in order to limit the movement of the bone conduction loudspeaker 200 in a radial direction relative to the housing assembly 100.

[0069] In some embodiments, as in Fig. 3a and Fig. As shown in Figure 4, the air-conducting loudspeaker 300 has a second central axis Y and is arranged to generate vibrations in the direction of the second central axis Y.

[0070] Optionally, the first central axis X and the second central axis Y can be perpendicular to each other. Then, the direction indicated by the first central axis X can be an axial direction of the bone conduction loudspeaker 200, and the direction indicated by the second central axis Y can be a radial direction perpendicular to the axial direction of the bone conduction loudspeaker 200.

[0071] Optionally, as in Fig. 3a, Fig. 4 and Fig. Figure 6 shows that the housing assembly 100 has a first side 103, a second side 104, and a third side 105, wherein the first side 103 and the second side 104 are arranged opposite each other in a direction perpendicular to the first central axis X and the second central axis Y, and the third side 105 is arranged adjacent to the first side 103 and the second side 104. Optionally, the first central axis X or the second central axis Y can pass through the third side 105. One of the pressure relief openings 115 can be formed on the first side 103 or the second side 104, while another pressure relief opening 115 can be formed on the third side 105.

[0072] For example, in some embodiments, the first central axis X can pass through the third side 105. The housing assembly 100 has a face-contact side for transmitting bone conduction vibrations to the user's face, with the third side 105 facing away from the face-contact side. In further embodiments, the second central axis Y passes through the third side 105. On the housing assembly 100, the third side 105 and a side on which the sound outlet opening 114 is located face away from each other.

[0073] By providing multiple pressure relief openings 115, the pressure relief area through which the second recording chamber 112 releases pressure to the external environment can be enlarged. This allows for rapid air circulation between the external environment and the second recording chamber 112, enabling the air in the sound chamber space of the second recording chamber 112 to be discharged quickly to the external environment and reducing the damping effect on the operation of the air-conducting loudspeaker 300 caused by sluggish airflow. This also helps to prevent, as far as possible, a situation where pressure relief cannot occur in the second recording chamber 112 after a pressure relief opening 115 is closed, thus avoiding any impairment of the vibrational sound waves of the air-conducting loudspeaker 300.

[0074] In some embodiments, different pressure relief openings 115 can be provided on different sides of the housing assembly 100. For example, a pressure relief opening 115 can be provided on the first side 103 or the second side 104, and on the third side 105 at a position corresponding to the second sub-chamber 1122, such that the pressure relief opening 115 is in communication with the second sub-chamber 1122.By means of such a configuration, the probability of interference between the sounds derived through the individual pressure relief openings 115, in particular the probability of constructive interference, can be reduced based on the enlargement of the pressure relief area, the sound effect can be improved and thus the influence on the sound emerging from the sound outlet opening 114 can be reduced.

[0075] In some embodiments, as in Fig. Figure 6 shows the housing assembly 100 on the third side 105 with an outwardly projecting body edge 106, wherein the further pressure relief opening 115 communicates with the external environment through the body edge 106. When the earphone 1 is worn and used, the opening direction of the sound outlet 114 is normally directed towards the user's ear canal, while a surface of the bone conduction loudspeaker 200 used for bone conduction is typically in close contact with the skin next to the ear canal. Therefore, the opening direction of the sound outlet 114 and the bone conduction surface intersect and form an acute angle, while an outwardly projecting body edge 106 is formed on the side of the housing assembly 100 furthest from the human skin.

[0076] Optionally, the body edge 106 can be positioned on the first housing 120 and correspond to the position of the second receiving chamber 112, so that the pressure relief opening 115 located on the body edge 106 can communicate with the second receiving chamber 112. Positioning the additional pressure relief opening 115 at the location of the body edge 106 ensures that this pressure relief opening 115 is not easily obstructed when wearing and using the earphone 1, thus guaranteeing air circulation in the pressure relief opening 115. Of course, in further embodiments, the body edge 106 of the third side 105 can also be recessed towards the inside of the housing assembly 100.

[0077] In some embodiments, as in Fig. 4, Fig. 5a and Fig. As shown in Figure 7, in a vertical direction Z, perpendicular to the first central axis X and the second central axis Y, the first recording chamber 111 has a first bottom wall 1111 and a second bottom wall 1112, which are opposite each other, and the second recording chamber 112 may have a third bottom wall 1123 and a fourth bottom wall 1124, which are opposite each other. The first bottom wall 1111 and the third bottom wall 1123 may be adjacent to each other, while the second bottom wall 1112 and the fourth bottom wall 1124 may also be adjacent to each other. The vertical direction Z has a positive direction from a plane of the first bottom wall 1111 to a plane of the second bottom wall 1112 and a negative direction opposite to the positive direction. The positive direction is indicated by the arrow Z in Fig. 3a and Fig. 7 shown.

[0078] Optionally, the circumferential side surface 201 of the bone conduction loudspeaker 200 can be in contact with the first floor wall 1111, wherein the first floor wall 1111, the supporting wall 101 and the partition wall 150 together enclose the boundary space 102, wherein the bone conduction loudspeaker 200 can be arranged in the boundary space 102 and can be in contact with the supporting wall 101 and the first floor wall 1111.

[0079] In the positive direction, the lowest point of the first floor wall 1111 can be higher than the lowest point of the third floor wall 1123.

[0080] In some embodiments, as in Fig. Figure 4 shows that the housing assembly 100 has a wall 1101 which adjoins the first receiving chamber 111 in a vertical direction, with the pressure relief opening 115 being provided in the wall 1101.

[0081] Specifically, by providing the pressure relief opening 115 in the wall 1101 between the first bottom wall 1111 and the third bottom wall 1123, the usable space within the housing assembly 100 can be fully utilized to improve the space utilization of the loudspeaker arrangement 10. Because the lowest point of the first bottom wall 1111 can be higher than the lowest point of the third bottom wall 1123, the first bottom wall 1111 and the third bottom wall 1123 can be offset in height along the positive direction of the vertical direction Z. This creates a larger space in the wall 1101 between them for the pressure relief opening 115, allowing the dimensions of the pressure relief opening 115 to be larger, thus increasing its size and improving the pressure relief effect.

[0082] In some embodiments, as in Fig. 4 to Fig. As shown in Figure 5a, the pressure relief opening 115 in the wall 1101 is funnel-shaped, extending from the second receiving chamber 110 outwards towards the housing assembly 100. A portion of the opening wall of the pressure relief opening 115, located near the third bottom wall 1123, can gradually tilt in the negative direction towards the side on which the third bottom wall 1123 is located. This configuration allows the dimensions of the pressure relief opening 115 to be further increased, thereby facilitating pressure relief through the pressure relief opening 115 and improving the sound effect of the loudspeaker arrangement 10.

[0083] In some embodiments, as in Fig. 3a and Fig. Figure 7 shows that the first central axis X and the second central axis Y are skew lines relative to each other, with the first central axis X and the second central axis Y being offset from each other in the vertical direction Z, which is perpendicular to the first central axis X and the second central axis Y.

[0084] Since the bone conduction loudspeaker 200 vibrates in the direction of the first central axis X and the air conduction loudspeaker 300 vibrates in the direction of the second central axis Y, the mutual interference of two components, namely the bone conduction loudspeaker 200 and the air conduction loudspeaker 300, during their vibration can be reduced by forming the first central axis X and the second central axis Y as skew and offset straight lines, thereby improving the effect of sound generation and transmission of the components.

[0085] In some embodiments, for example, as in Fig. As shown in Figure 7, in the positive direction the first central axis X is arranged higher than the second central axis Y, which can make it easier to arrange the lowest point of the first bottom wall 1111 higher than the lowest point of the third bottom wall 1123 to facilitate the formation of a funnel-shaped pressure relief opening 115, which allows the dimensions of the funnel-shaped pressure relief opening 115 to be made larger.

[0086] In some embodiments, as in Fig. As shown in Figure 7, the distance P between the first central axis X and the second central axis Y can be 0.2 to 0.8 mm. The distance between the first central axis X and the second central axis Y can be... Fig. 5a can be represented by the distance P. For example, the distance P between the first central axis X and the second central axis Y can be 0.3, 0.5 or 0.7.

[0087] Optionally, the first central axis X can be higher than the second central axis Y in the positive direction. By configuring the distance between the first central axis X and the second central axis Y in this way, the dimensions of the loudspeaker arrangement 10 can be reduced, while the lowest point of the first floor wall 1111 can be designed to be higher than the lowest point of the third floor wall 1123.

[0088] In some embodiments, as in Fig. 8 and Fig. Figure 9 shows that the bone conduction loudspeaker 200 comprises a cylindrical cover 210 extending along the first central axis X, a voice coil assembly 221, a magnet assembly 222, and a vibration transmission element 223, wherein the voice coil assembly 221 and the magnet assembly 222 can be arranged in the cylindrical space of the cylindrical cover 210, wherein the vibration transmission element 223 is rigidly connected to a first connection between the magnet assembly 222 and the voice coil assembly 221 and to the cylindrical cover 210, and wherein a second connection between the magnet assembly 222 and the voice coil assembly 221 is rigidly connected to the cylindrical cover 210. The cylindrical cover 210 closes the communication opening 113.

[0089] The magnet assembly 222 is used to enable an interaction between its magnetic field and the voice coil assembly 221 when current flows through it, thus generating vibrations to convert a sound-related current signal into a vibration signal. The voice coil assembly 221, when current flows through it, generates an electrical signal that interacts with the magnetic field of the magnet assembly 222, causing the magnet assembly 222 to generate vibrations. The cylindrical cover 210 can be magnetically conductive and can be used to limit the direction of the magnetic field of the magnet assembly 222. The cylindrical cover 210 can also be in contact with the housing assembly 100.When the voice coil assembly 221 is set into vibration, it can cause the cylindrical cover 210 to vibrate, thereby transmitting the vibration signal via the cylindrical cover 210 to the housing assembly 100. The vibration transmission element 223 is used to elastically connect the voice coil assembly 221 and the magnet assembly 222, thus elastically limiting their relative movement in the direction of the first central axis X.

[0090] In some embodiments, as in Fig. 10 to Fig. Figure 11 shows that the air-conducting loudspeaker 300 comprises a diaphragm 310 and a drive mechanism 320, wherein the drive mechanism 320 may be connected to the diaphragm 310, and wherein an inner sound chamber 330 may be enclosed between the diaphragm 310 and the drive mechanism 320. The drive mechanism 320 is used, under the control of electrical signals, to drive the diaphragm 310 so that it generates vibrations, which in turn cause the air in the inner sound chamber 330 in the air-conducting loudspeaker 300 to vibrate, thereby generating sound waves.

[0091] There are many ways to arrange the air-conducting loudspeaker 300 in the second recording chamber 112. For example, the inner sound chamber 330 can be connected to the second sub-chamber 1122 to communicate with the pressure relief opening 115. Alternatively, the inner sound chamber 330 can communicate with the first sub-chamber 1121. Two of these possibilities are described below.

[0092] First possibility: The membrane 310 can be arranged closer to the communication opening 113 than the drive mechanism 320, wherein the membrane 310 is arranged opposite the communication opening 113 and faces the second subchamber 1122, and wherein the first subchamber 1121 can communicate with the inner sound chamber 330.

[0093] When the drive mechanism 320 causes the diaphragm 310 to vibrate, the diaphragm 310 is located closer to the communication opening 113, i.e., closer to the bone conduction loudspeaker 200. On the one hand, due to the larger radial dimension of the diaphragm 310 and the smaller radial dimension of the drive mechanism 320, by arranging the larger diaphragm 310 close to the bone conduction loudspeaker 200 and the smaller diaphragm 320 closer to the outside, the volume of the housing assembly 100 near the outside can be effectively reduced, thereby making the volume and dimensions of the loudspeaker assembly 10 more compact and reasonable, and improving the space utilization of the interior of the loudspeaker assembly 10.On the other hand, by arranging the membrane 310 opposite the communication opening 113 and facing the second subchamber 1122, the volume of the second subchamber 1122 can be effectively increased, so that the air in the second subchamber 1122 can be effectively directed outwards through the pressure relief opening 115, which improves the pressure relief effect.

[0094] Second possibility: The membrane 310 can be arranged further away from the communication opening 113 than the drive mechanism 320, wherein the membrane 310 can be turned away from the communication opening 113 and towards the first subchamber 1121, and wherein the second subchamber 1122 is in communication with the inner sound chamber 330.

[0095] Because the membrane 310 faces away from the communication opening 113 and towards the first subchamber 1121, the transmission of the sound waves generated by the membrane 310 to the first subchamber 1121 is facilitated. Furthermore, the presence of the communication opening 113 and the second subchamber 1122 enlarges the inner sound chamber 330; and the pressure relief via the pressure relief opening 115 effectively improves the pressure relief effect.

[0096] In some embodiments, as in Fig. 10 to Fig. Figure 11 shows that the drive mechanism 320 comprises a voice coil 321 and a magnetic circuit assembly 322, wherein the magnetic circuit assembly 322 comprises a cover 3222 with an open end 3221 and an annular flange 3223, which is arranged at the open end 3221 of the cover 3222 and projects from an outer circumferential surface of the cover 3222. The magnetic circuit assembly 322 is used to interact with the voice coil 321 and thereby generate vibrations, wherein the voice coil 321, when current flows through it, interacts with the magnetic field of the magnetic circuit assembly 322 and thereby drives the magnetic circuit assembly 322 to generate vibrations.

[0097] An edge of the diaphragm 310 can be attached to the annular flange 3223. The voice coil 321 can be connected to a side of the diaphragm 310 facing the magnetic circuit arrangement 322. An inner sound chamber 330 can be enclosed between the diaphragm 310 and the magnetic circuit arrangement 322, with the diaphragm 310 located on a side of the cover 3222 facing away from the sound outlet opening 114 and facing the communication opening 113, the first subchamber 1121 communicating with the inner sound chamber 330. This communication between the first subchamber 1121 and the inner sound chamber 330 allows the sound waves generated by the air vibrations inside the inner sound chamber 330 to be transmitted through the first subchamber 1121 and the sound outlet opening 114 out of the loudspeaker arrangement 10.

[0098] Optionally, the annular flange 3223 can be arranged on a side facing away from the sound outlet 114, and the diaphragm 310 can also be arranged on a side facing away from the sound outlet 114. In this way, the diaphragm 310 and the annular flange 3223, etc., can be brought closer to the interior of the housing assembly 100, allowing the diaphragm 310 and the annular flange 3223 with a larger radial dimension of the air-conducting loudspeaker 300 to be positioned facing away from the sound outlet 114, while a portion of the air-conducting loudspeaker 300 with a smaller dimension can be located close to the sound outlet 114.This structure, in which the air-conducting loudspeaker 300 is arranged in reverse, can effectively reduce the dimensions of a portion of the housing assembly 100 located near the sound outlet 114, compared to a conventional loudspeaker structure where the diaphragm 310 must face the sound outlet 114. This allows the dimensions of the housing assembly 100 to decrease from the central area to a portion of the sound outlet 114 (i.e., the radial dimension of the outer circumferential area of ​​the housing assembly 100 can gradually decrease), making the structure more compact, effectively improving the space utilization of the housing assembly 100, and reducing the overall volume of the entire housing assembly 100. Additionally, such an inverted arrangement can optimize the sound exit path and thus improve sound quality.In simpler terms, the air transmission loudspeaker 300 is arranged in reverse in the direction of air vibration, effectively reducing the size of the housing assembly 100.

[0099] If, in the loudspeaker arrangement 10, the positions of the sound outlet 114 and the pressure relief opening 115 are relatively close to each other, the sound waves generated by the pressure relief opening 115 and the sound outlet 114, respectively, influence each other, which can lead to near-field interference. The low-frequency sound waves transmitted by the sound outlet 114 can easily be attenuated by the phase-shifted interference of the sound waves exiting the pressure relief opening 115, resulting in a sound cancellation phenomenon. The following exemplary embodiments describe further technical measures related to the pressure relief opening 115 and the sound outlet 114.

[0100] Below is an exemplary description of an earphone 1 according to a further implementation example.

[0101] As mentioned above, a housing assembly 100 can be equipped with a recording chamber 110. An air-conduction loudspeaker 300 is provided in the recording chamber 110. A bone conduction loudspeaker 200 is provided in the recording chamber 110.

[0102] Optionally, the bone conduction loudspeaker 200 can have a first central axis X and generate vibrations in the direction of this axis. The air conduction loudspeaker 300 can have a second central axis Y and generate vibrations in the direction of this axis. Specifically, a voice coil and a diaphragm of the air conduction loudspeaker 300 generate vibrations in the direction of the second central axis Y.

[0103] The housing assembly 100 is further provided with a sound outlet opening 114 and a pressure relief opening 115, which communicate with the receiving chamber 110. The sound outlet opening 114 and the pressure relief opening 115 are each used to direct a portion of the sound waves generated by the air-line loudspeaker 300 to the external environment. The pressure relief opening 115 and the sound outlet opening 114 can each be located on two opposite side surfaces of the housing assembly 100.

[0104] As in Fig. 12 to Fig. As shown in Figure 13, the housing assembly 100 can comprise a first housing 120, a second housing 130, and a third housing 140. The first housing 120, the second housing 130, and the third housing 140 can together enclose the receiving space 110. Optionally, the second housing 130 can be connected to the first housing 120 in the direction of the first central axis X, and the third housing 140 can be connected to the second housing 130 in the direction of the second central axis Y. Optionally, the sound outlet 114 can be provided on the third housing 140, and the pressure relief opening 115 can be provided on a portion of the first housing 120 facing away from the third housing 140, such that the sound outlet 114 and the pressure relief opening 115 are located on opposite sides of the housing assembly 100.

[0105] By arranging the sound outlet 114 and the pressure relief opening 115 on opposite sides of the housing assembly 100, the distance between the sound outlet 114 and the pressure relief opening 115 can be increased compared to arranging them on other adjacent sides or on the same side of the housing assembly 100. This reduces the mutual interference between the two openings. This decreases the destructive interference between the sound outlet 114 and the pressure relief opening 115 in the near field and thus attenuates the sound waves emanating from the sound outlet 114.This reduces the sound cancellation phenomenon between the two openings, thereby improving the low-frequency effect of the loudspeaker arrangement 10 and thus the sound effect of the earphone 1.

[0106] In some embodiments, as in Fig. 12 to Fig. Figure 13 shows that the loudspeaker arrangement 10 is provided with a pressure relief channel 400, which communicates with the pressure relief opening 115. The sound outlet opening 114 can communicate with the recording chamber 110. The pressure relief channel 400 is used to direct a portion of the sound waves generated by the air-line loudspeaker 300 in the recording chamber 110 to the pressure relief opening 115.

[0107] By providing a pressure relief channel 400, which connects the receiving chamber 110 to the pressure relief opening 115, the air to be relieved in the receiving chamber 110 can be conveniently directed into the pressure relief channel 400, and the pressure relief can then be further relieved via the pressure relief opening 115. On the one hand, the pressure relief path can be extended to improve the pressure relief effect. On the other hand, the pressure relief channel 400, which communicates with the pressure relief opening 115, ensures that the sound waves being relieved during a pressure relief process do not easily interfere with the operation of other components, thereby improving the sound effect of the loudspeaker arrangement 10. The provision of the pressure relief channel 400 also allows for precise positioning of the pressure relief of the air duct loudspeaker 300.While the mutual interference between the sound outlet opening 114 and the pressure relief opening 115 is reduced, the flexibility of the pressure relief of the air duct loudspeaker 300 is increased.

[0108] In some embodiments, the pressure relief channel 400 and the receiving chamber 110 can be spaced apart from each other, with the pressure relief channel 400 being able to communicate with the receiving chamber 110. Optionally, the first housing 120 can be provided with the aforementioned pressure relief channel 400, with one end of the pressure relief channel 400 communicating with the receiving chamber 110 and the other end of the pressure relief channel 400 being configured as a pressure relief opening 115. Specifically, the pressure relief channel 400 and the receiving chamber 110 can be spaced apart from each other so that the gases to be relieved can be relieved independently of each other and are separated from other elements in the receiving chamber 110, so that the elements in the receiving chamber 110 are not easily affected.Furthermore, by providing the pressure relief channel 400 on the first housing 120, a greater distance between the pressure relief opening 115 and the sound outlet opening 114 can be achieved, and no additional installation of the pressure relief channel 400 is required when assembling the first housing 120, the second housing 130 and the third housing 140, which increases assembly efficiency.

[0109] In some embodiments, as in Fig. 12 to Fig. Figure 13 shows that the recording chamber 110 comprises a first recording chamber 111 and a second recording chamber 112, which are separated from each other, wherein the bone conduction loudspeaker 200 is arranged in the first recording chamber 111 and the air conduction loudspeaker 300 is arranged in the second recording chamber 112, wherein the sound outlet opening 114 is connected to the second recording chamber 112, wherein the pressure relief channel 400 is in communication with the second recording chamber 112 and is spaced apart from the first recording chamber 111, and wherein the pressure relief channel 400 brings the second recording chamber 112 into communication with the pressure relief opening 115.

[0110] Optionally, the second housing 130 and the first housing 120 can be fitted together to form the first recording chamber 111, and the third housing 140 and the first housing 120 can be fitted together to form the second recording chamber 112.

[0111] Due to the different operating principles of the bone conduction loudspeaker 200 and the air conduction loudspeaker 300, the independence of the operation of the bone conduction loudspeaker 200 can be ensured by separating the first recording chamber 111, the second recording chamber 112 and the pressure relief channel 400 from each other, the influence of the operation of the air conduction loudspeaker 300 on the bone conduction loudspeaker 200 can be minimized and the bone conduction loudspeaker 200 can also be protected to a certain extent.Since, during operation of the earphone 1, the sound waves generated by the air conduction loudspeaker 300 according to the air vibration principle are emitted from the loudspeaker arrangement 10 through the sound outlet opening 114 and can thus reach the user's ear canal, the communication between the second receiving chamber 112, in which the air conduction loudspeaker 300 is located, and the external environment via the pressure relief opening 115 allows air to circulate freely in the second receiving chamber 112 and in the air conduction loudspeaker 300, thereby preventing the air in the second receiving chamber 112 from damping the vibrations of the air conduction loudspeaker 300 and thus impairing the sound effect generated by the air conduction loudspeaker 300.

[0112] In some embodiments, the first receiving chamber 111 and the second receiving chamber 112 can be isolated from each other. Specifically, the area of ​​the interface between the first receiving chamber 111 and the external environment can be smaller than the area of ​​the interface between the second receiving chamber 112 and the external environment, and smaller than the area of ​​the interface between the pressure relief channel 400 and the external environment. In other words, the tightness of the first receiving chamber 111 is greater than that of the second receiving chamber 112 and the pressure relief channel 400. Here, tightness can be understood as the airtightness of the chamber space.

[0113] Since the bone conduction loudspeaker 200 requires a highly sealed environment to ensure the bone conduction effect, mutual interference between the bone conduction loudspeaker 200 and the air conduction loudspeaker 300 can be effectively reduced by arranging the bone conduction loudspeaker 200 and the air conduction loudspeaker 300 separately in two different chambers in the recording room 110, and the sound effect produced by the bone conduction loudspeaker 200 can also be effectively improved by arranging the bone conduction loudspeaker 200 in the first recording chamber 111 with better sealing.

[0114] Optionally, the pressure relief channel 400 and the first receiving chamber 111 can be spaced apart from each other in a vertical direction Z, which is perpendicular to the arrangement direction of the first receiving chamber 111 and the second receiving chamber 112. As shown in Fig. 12 to Fig. As shown in Figure 13, the orientation of the first recording chamber 111 and the second recording chamber 112 can be identical to the direction of the second central axis Y of the air-conducting loudspeaker 300. The two directions can be those defined by the Y-line in Figure 13. Fig. 12 and Fig. The directions shown in the 13 diagrams are shown. The vertical direction Z, perpendicular to the arrangement direction of the first recording chamber 111 and the second recording chamber 112, is indicated by the arrow Z in Fig. 12 and Fig. 13 shown.

[0115] Optionally, the extension length of the pressure relief channel 400 in the arrangement direction can have a length component that is greater than its length component in the vertical direction Z. Such a configuration allows the following: The pressure relief channel 400 to have a smaller dimension in the vertical direction Z, thereby reducing the dimension of the loudspeaker arrangement 10 in the vertical direction Z; the distance between the sound outlet opening 114 and the pressure relief opening 115 can be increased to reduce mutual interference between the sound outlet opening 114 and the pressure relief opening 115 in the near field. The length component of the extension length of the pressure relief channel 400 in the arrangement direction is given by the length E in Fig. Figure 13 shows the length component of the pressure relief channel 400 in the vertical direction Z through the length F in Fig. 13 is shown, where E > F.

[0116] In some embodiments, as in Fig. 12 to Fig. Figure 13 shows that the housing assembly 100 provides a first partition 170 between the first recording chamber 111 and the second recording chamber 112, and a second partition 180 between the pressure relief channel 400 and the first recording chamber 111. The first partition 170 can separate the second recording chamber 112 from the first recording chamber 111. The second partition 180 can be used to separate the pressure relief channel 400 from the first recording chamber 111. In this way, an independent pressure relief channel 400 and an independent first recording chamber 111 can be formed. On the one hand, the presence of the pressure relief channel 400 can lengthen the pressure relief path, increase the dimensions of the pressure relief chamber, and improve the pressure relief effect, thereby improving the sound quality.On the other hand, the working processes of the air conduction loudspeaker 300 and the bone conduction loudspeaker 200 cannot interfere with each other, which reduces the mutual influence between the two and ensures their respective output effects of sound quality.

[0117] Optionally, one end of the second partition 180 can be connected to the first housing 120, and the opposite end can be connected to the first partition 170, so that the pressure relief channel 400 and the first receiving chamber 111 can be spaced apart from each other in the vertical direction Z.

[0118] Optionally, as in Fig. As shown in Figure 13, the first partition 170 extends further between the second receiving chamber 112 and the pressure relief channel 400, wherein the first partition 170 may be provided with a sound-guiding opening 173, the sound-guiding opening 173 bringing the second receiving chamber 112 into communication with the pressure relief channel 400. The pressure relief opening 115 communicates with the second receiving chamber 112 via the pressure relief channel 400 and the sound-guiding opening 173.During operation of the earphone 1, a portion of the sound waves generated by the air-conducting loudspeaker 300, which must be subjected to pressure relief, can be successively transmitted through the second receiving chamber 112, the sound guide opening 173, the pressure relief channel 400 and the pressure relief opening 115 out of the loudspeaker arrangement 10 in order to prevent the air in the second receiving chamber 112 from damping the vibration of the air-conducting loudspeaker 300 and thereby impairing the sound effect generated by the air-conducting loudspeaker 300.

[0119] In some embodiments, as in Fig. Figure 13 shows that the housing assembly 100 has a first communication opening 172 between the first recording chamber 111 and the second recording chamber 112, wherein the first communication opening 172 can bring the first recording chamber 111 into communication with the second recording chamber 112. The bone conduction loudspeaker 200 can close the first communication opening 172, so that the first recording chamber 111 and the second recording chamber 112 are isolated from each other.

[0120] By providing the first communication opening 172 between the first recording chamber 111 and the second recording chamber 112, and by using the bone conduction loudspeaker 200 to close the first communication opening 172 on one side, the usable space of the first recording chamber 111 can be expanded while ensuring the strong airtightness of the second recording chamber 112. This can effectively improve the ease of installation of the air conduction loudspeaker 300 and the reliability of the structural configuration. Furthermore, it can easily and effectively increase the volume of the sound chamber space formed by the air conduction loudspeaker 300 in the second recording chamber 112, thereby improving the sound output effect and sound quality of the air conduction loudspeaker 300.From another perspective, while maintaining an unchanged volume of the sound chamber space, the air conduction loudspeaker 300 can be positioned closer to the side of the bone conduction loudspeaker 200, which can reduce the dimensions of the loudspeaker arrangement 10 and achieve a compact overall dimension.

[0121] In some embodiments, as in Fig. Figure 13 shows that the housing assembly 100 has a second communication opening 181 between the first recording chamber 111 and the pressure relief channel 400, wherein the second communication opening 181 can bring the first recording chamber 111 into communication with the pressure relief channel 400, wherein the bone conduction loudspeaker 200 closes the second communication opening 181, so that the first recording chamber 111 and the pressure relief channel 400 are isolated from each other.

[0122] By bringing the second communication opening 181 into communication with the first recording chamber 111 and the pressure relief channel 400, and by the bone conduction loudspeaker 200 sealing the second communication opening 181, the area of ​​the pressure relief channel 400 can be increased while simultaneously ensuring the strong airtightness of the first recording chamber 111. In this way, it is possible either to allow the pressure relief channel 400 to have a larger space for pressure relief, thereby improving the pressure relief effect, or to allow the pressure relief channel 400 to be located closer to the first recording chamber 111 while maintaining the same area size, thus reducing the dimensions of the loudspeaker assembly 10 in the vertical direction Z.

[0123] Of course, in other embodiments the pressure relief channel 400 can be designed in other shapes. Pressure relief channels 400 in other shapes are described below as examples.

[0124] In some embodiments, as in Fig. Figure 14 shows the loudspeaker arrangement 10 comprising a channel tube 500 formed with a pressure relief channel 400, wherein the channel tube 500 is fixedly arranged on the housing assembly 100 and is located in the first receiving chamber 111, wherein one end of the channel tube 500 communicates with the second receiving chamber 112 and the other end communicates with the pressure relief opening 115.

[0125] Optionally, a first partition 170 can be provided between the first recording chamber 111 and the second recording chamber 112, the first partition 170 separating the second recording chamber 112 and the first recording chamber 111 from each other. One end of the duct 500 can be connected to the first partition 170 and communicate with the second recording chamber 112, and the other end can communicate with the pressure relief opening 115 on the first housing 120, thus connecting the second recording chamber 112 to the external environment. Optionally, the bone conduction loudspeaker 200 can be spaced vertically Z away from the duct 500.

[0126] The conduit 500 is located in the first recording chamber 111 and is isolated from and does not communicate with it. Specifically, a portion of the conduit 500 that communicates with the second recording chamber 112 is sealed off from the first recording chamber 111, and a portion of the conduit 500 that communicates with the pressure relief opening 115 is also sealed off from the first recording chamber 111. Specifically, the conduit 500 in the first recording chamber 111 is sealed to the first housing 120 and thus does not communicate with the first recording chamber 111. In this way, the tight seal of the first recording chamber 111 can be ensured to guarantee the bone conduction effect of the bone conduction loudspeaker 200.

[0127] In other embodiments, as in Fig. Figure 15 shows that part of the recording space 110 is designed as a pressure relief channel 400.

[0128] Optionally, the bone conduction loudspeaker 200 can be designed as a sealed structure, the interior of which is isolated from the recording chamber 110. A pressure relief channel 400 can be enclosed between the bone conduction loudspeaker 200 and an inner wall of the recording chamber 110. Due to the sealed structure of the bone conduction loudspeaker 200, the influence of water vapor in the recording chamber 110 on the bone conduction loudspeaker 200 can be largely avoided, thus allowing the bone conduction loudspeaker 300 to be adapted to an unsealed environment and achieving a good bone conduction effect even without high airtightness.

[0129] Optionally, as in Fig. As shown in Figure 15, the recording chamber 110 comprises a first recording chamber 111 and a second recording chamber 112, which are spaced apart from each other. The bone conduction loudspeaker 200 can be arranged in the first recording chamber 111 and can enclose a pressure relief channel 400 with an inner wall of the first recording chamber 111. The air conduction loudspeaker 300 can be arranged in the second recording chamber 112. The housing assembly 100 can be provided with a sound-guiding opening 173 between the first recording chamber 111 and the second recording chamber 112, the sound-guiding opening 173 bringing the first recording chamber 111 into communication with the second recording chamber 112.

[0130] Specifically, the pressure relief opening 115 is arranged on the first housing 120 and communicates with the first receiving chamber 111. The sound waves generated by the air-conducting loudspeaker 300, which require pressure relief, can then be successively routed through the second receiving chamber 112, the sound guide opening 173, the first receiving chamber 111 (i.e., the pressure relief channel 400), and the pressure relief opening 115 out of the loudspeaker arrangement 10.

[0131] In this way, by having the bone conduction loudspeaker 200 and the inner wall of the first recording chamber 111 enclose a pressure relief channel 400, the internal structure of the first recording chamber 111 can be simplified, thereby reducing the dimensions of the first recording chamber 111 and making the structure of the loudspeaker arrangement 10 more compact. Furthermore, by forming a pressure relief channel with the first recording chamber 111 and the bone conduction loudspeaker 200, the space utilization of the first recording chamber 111 can be improved, thus fully utilizing the space of the first recording chamber 111 to increase the dimensions of the pressure relief channel 400, improve the pressure relief effect, and thus enhance the sound effect of the air conduction loudspeaker 300.

[0132] In some embodiments, as in Fig. 8 to Fig. As shown in Figure 9, the bone conduction loudspeaker 200 comprises a cylindrical cover 210, a drive assembly 220, and two sealing plates 230. The cylindrical cover 210 can be rigidly connected to the housing assembly 100, with the drive assembly 220 being arranged within the cylindrical cover 210. The drive assembly 220 is used to vibrate the cylindrical cover 210, thereby also vibrating the housing assembly 100. The two sealing plates 230 can each be arranged at either end of the cylindrical cover 210 and seal the cylindrical cover 210 to form a sealed structure.

[0133] Optionally, the drive assembly 220 can be positioned between the two sealing plates 230, with the drive assembly 220 and the two sealing plates 230 arranged sequentially along a first central axis X. The drive assembly 220 is used to generate vibrations along the first central axis X under the influence of an electrical signal, thereby vibrating the cylindrical cover 210 and thus the housing assembly 100. This vibration signal is then transmitted to a human body in contact with the housing assembly 100, thus achieving bone conduction.

[0134] By sealing the cylindrical cover 210 with the two sealing plates 230, the sealed structure of the bone conduction loudspeaker 200 is achieved, thereby reducing interference from external moisture and dust at the bone conduction loudspeaker 200, increasing the integration of the bone conduction loudspeaker 200's structure, and enhancing its compactness. Optionally, the sealing plate 230 can be designed as a magnetically conductive plate, which can suppress stray flux from the drive assembly 220 and thus increase the magnetic field strength in the cylindrical cover 210.

[0135] In some embodiments, as in Fig. 8 to Fig. As shown in Figure 9, the bone conduction loudspeaker 200 further comprises a vibration transmission element 223. The drive assembly 220 can also comprise a voice coil assembly 221 and a magnet assembly 222, wherein the voice coil assembly 221 can be mounted on the magnet assembly 222, and wherein the vibration transmission element 223 can be fixedly connected to the cylindrical cover 210 and to one of the voice coil assembly 221 and the magnet assembly 222, and the other of the voice coil assembly 221 and the magnet assembly 222 can be fixedly connected to the cylindrical cover 210.

[0136] The magnet assembly 222 is used to enable an interaction between its magnetic field and the voice coil assembly 221 when current flows through it, thus generating vibrations to convert a sound-related current signal into a vibration signal. The voice coil assembly 221 is used to generate an electrical signal when current flows through it, which interacts with the magnetic field of the magnet assembly 222, thereby generating vibrations. The cylindrical cover 210 is used to limit the direction of the magnetic field of the magnet assembly 222. The cylindrical cover 210 is also used to make contact with the housing assembly 100.When the voice coil assembly 221 is set into vibration, it can cause the cylindrical cover 210 to vibrate, thereby transmitting the vibration signal via the cylindrical cover 210 to the housing assembly 100. The vibration transmission element 223 is used to elastically connect the voice coil assembly 221 and the magnet assembly 222, thus elastically limiting their relative movement in the direction of the first central axis X.

[0137] The following embodiment further describes the sealing structure of the bone conduction loudspeaker 200 by way of example.

[0138] With reference to Fig. 3a The bone conduction loudspeaker 200 is located in the recording chamber 110. The bone conduction loudspeaker 200 is connected to the housing assembly 100. Specifically, when using the earphone 1, the housing assembly 100 can be in contact with the user's body, with the bone conduction loudspeaker 200 being used to vibrate the housing assembly 100 by means of bone conduction vibration, thereby transmitting sound to the user.

[0139] In some embodiments, as in Fig. 8 to Fig. Figure 9 shows that the bone conduction loudspeaker 200 comprises a cylindrical cover 210, a drive assembly 220, and two sealing plates 230. The cylindrical cover 210 can enclose a housing space 211. The drive assembly 220 can be arranged in the housing space 211 and connected to the cylindrical cover 210. The two sealing plates 230 can each be arranged at either end of the cylindrical cover 210 and seal the housing space 211.

[0140] The drive assembly 220 can be used to convert an electrical signal into a vibration signal, so that when the bone conduction loudspeaker 200 is used, the drive assembly 220 can generate vibrations and cause the cylindrical cover 210 to vibrate. Sealing both ends of the cylindrical cover 210 with the two sealing plates 230 creates a sealed enclosure 211, thus confining the drive assembly 220 and preventing it from falling out of the cylindrical cover 210. Furthermore, sealing the cylindrical cover 210 with the two sealing plates 230 also prevents contaminants such as dust, water droplets, etc., from entering the enclosure.This allows vibrations to enter the housing space 211 and affect the vibration of the drive assembly 220, thereby ensuring the bone conduction effect of the bone conduction loudspeaker 200 and extending its service life. Furthermore, the structure of the bone conduction loudspeaker 200 is more integrated, increasing its compactness.

[0141] Optionally, the sealing plate 230 can be designed as a magnetically conductive plate, which can suppress stray flux from the drive assembly 220 and thus increase the magnetic field strength in the cylindrical cover 210. For example, the sealing plate 230 can be a steel plate. In some embodiments, the sealing plate 230 can also be an ordinary metal plate.

[0142] In some embodiments, as in Fig. 8 to Fig. As shown in Figure 9, the bone conduction loudspeaker 200 further comprises a vibration transmission element 223, wherein the vibration transmission element 223 connects the drive assembly 220 to the cylindrical cover 210. In one direction of a central axis of the cylindrical cover 210, the vibration transmission element 223 can be arranged between the drive assembly 220 and the sealing plate 230 and may be opposite the sealing plate 230. Specifically, the central axis of the cylindrical cover 210 can coincide with the first central axis X of the bone conduction loudspeaker 200, the direction of the central axis of the cylindrical cover 210 being indicated by the arrow X in Figure 9. Fig. 8 and Fig. 9 is shown.

[0143] The vibration transmission element 223 is used to connect to the drive assembly 220 in order to limit the drive assembly 220. During its vibration, the drive assembly 220 drives the vibration transmission element 223 to vibrate the cylindrical cover 210. Specifically, the sealing plate 230, the vibration transmission element 223, and the drive assembly 220 are arranged sequentially along the central axis of the cylindrical cover 210. The vibration direction of the bone conduction loudspeaker 200 can also be the direction of the central axis of the cylindrical cover 210. That is, the vibration direction of the drive assembly 220 is also the direction of the central axis of the cylindrical cover 210. With this configuration, the sealing plate 230 and the vibration transmission element 223 can be operated in a controlled manner.The drive assembly 220 can be doubly limited in the vibration directions of the drive assembly 220 by the sealing plate 230, which can also limit the vibration transmission element 223 to prevent the vibration transmission element 223 from deforming excessively during operation or vibration of the drive assembly 220, thereby extending the service life of the vibration transmission element 223.

[0144] In some embodiments, as in Fig. 8 to Fig. Figure 9 shows that the two sealing plates 230 are firmly connected to both ends of the cylindrical cover 210, with a circumferential edge of the vibration transmission element 223 being firmly connected to the inner wall of the cylindrical cover 210.

[0145] Optionally, as in Fig. 8 to Fig. As shown in Figure 9, at least one end of the cylindrical cover 210 is stepped to form a first bearing surface 212 and a second bearing surface 213 in the direction of the central axis, with a stepped slope between them, the second bearing surface 213 being located closer to the central axis of the cylindrical cover 210 than the first bearing surface 212. The sealing plate 230 is firmly supported on the first bearing surface 212. The circumferential edge of the vibration transmission element 223 is firmly supported on the second bearing surface 213.

[0146] Optionally, the first contact surface 212 can be flush with one of the sides of the vibration transmission element 223 facing away from the second contact surface 213, so that when the sealing plate 230 is firmly supported on the first contact surface 212, the vibration transmission element 223 can be pressed against the second contact surface 213 to further secure it to the cylindrical cover 210. This configuration allows for a more compact design of the bone conduction loudspeaker 200 and facilitates assembly.

[0147] The connection between the sealing plate 230 and the first bearing surface 212 can be designed to be sealed (e.g., a sealant can be applied for fastening and sealing; alternatively, fastening and sealing can be achieved by welding). A further sealing plate 230, located at the other end of the cylindrical cover 210, can also be sealed to the cylindrical cover 210, so that the cylindrical cover 210 forms a sealed structure.

[0148] In further embodiments, the vibration transmission element 223 can be fixedly connected to one end of the cylindrical cover 210, wherein the sealing plate 230 is fixedly stacked on a side of the vibration transmission element 223 that is remote from the drive assembly 220 and is spaced apart from the cylindrical cover 210.

[0149] Specifically, in the axial direction of the cylindrical cover 210, the sealing plate 230, the vibration transmission element 223, and the cylindrical cover 210 are arranged in a layered arrangement, with the circumferential edge of the vibration transmission element 223 being fixedly connected to an end face of the cylindrical cover 210, and the sealing plate 230 being attached to the vibration transmission element 223 in such a way as to be connected to the cylindrical cover 210 via the vibration transmission element 223. Both the connection of the vibration transmission element 223 to the cylindrical cover 210 and the connection of the sealing plate 230 to the vibration transmission element 223 are designed to be sealing.

[0150] Of course, in other embodiments, the vibration transmission element 223 and the sealing plate 230 can also be attached to the cylindrical cover 210 in other ways. For example, the circumferential edge of the vibration transmission element 223 can be directly connected to the inner wall of the cylindrical cover 210, with the sealing plate 230 being firmly supported on the first bearing surface 212 and covering one end of a sealing plate 230. This is not described in detail here for this embodiment.

[0151] In some embodiments, as in Fig. 8 to Fig. Figure 9 shows that the number of vibration transmission sheets 223 is two, wherein the two vibration transmission sheets 223 can each be rigidly connected to the cylindrical cover 210, and wherein the two sealing plates 230 can be arranged one-to-one on a side of the two vibration transmission sheets 223 away from the drive assembly 220.

[0152] Specifically, the two vibration transmission sheets 223 and the two sealing plates 230 can be arranged sequentially along the central axis of the cylindrical cover 210. Furthermore, the two vibration transmission sheets 223 and the two sealing plates 230 can each be located on either side of the drive assembly 220, with the two vibration transmission sheets 223 connecting the drive assembly 220 and the cylindrical cover 210 on both sides of the drive assembly 220 to confine the drive assembly 220 on both sides. The two sealing plates 230 can each be arranged on a side of the two vibration transmission sheets 223 furthest from the drive assembly 220 to protect the two vibration transmission sheets 223 and to seal the housing space 211 of the cylindrical cover 210.

[0153] By providing two vibration transmission blades 223, it is made easier for the drive assembly 220 to drive the two vibration transmission blades 223 during vibration, causing the cylindrical cover 210 to vibrate. This improves the bone conduction effect of the bone conduction loudspeaker 300 and increases its sensitivity. Furthermore, by limiting the drive assembly 220, the pressure caused by its vibration can be distributed, thus extending the service life of the vibration transmission blades 223 and, consequently, the service life of the bone conduction loudspeaker 200.

[0154] Of course, in other embodiments only one vibration transmission element 223 can be provided, wherein the vibration transmission element 223 can be arranged on one side of the cylindrical cover 210 and connected to the drive assembly 220, thus limiting the drive assembly 220. The two sealing plates 230 can also be arranged on both sides of the cylindrical cover 210 and seal the housing space 211 of the cylindrical cover 210, with the vibration transmission element 223 being located between the two sealing plates 230, so that it lies within the housing space 211 of the cylindrical cover 210. Optionally, the sealing plate 230 furthest from the vibration transmission element 223 can be formed integrally with the cylindrical cover 210 to create a single-piece structure. In this way, the sealing of the housing space 211 can be improved.

[0155] In some embodiments, as in Fig. 8 to Fig. Figure 9 shows the drive assembly 220 further comprising a voice coil assembly 221 and a magnet assembly 222, wherein a first voice coil assembly 221 and the magnet assembly 222 surrounds a second voice coil assembly 221 and the magnet assembly 222, and wherein the first voice coil assembly 221 and the magnet assembly 222 is firmly connected to the cylindrical cover 210. The vibration transmission element 223 firmly connects the second of the voice coil assembly 221 and the magnet assembly 222 to the cylindrical cover 210. The vibration transmission element 223 and the sealing plate 230 are arranged opposite each other in the direction of the central axis, the vibration transmission element 223 being used to elastically restrict the relative movement of the voice coil assembly 221 and the magnet assembly 222 in the direction of the central axis of the cylindrical cover 210.The voice coil assembly 221 is used to receive current, and the current can form a circuit through the voice coil assembly 221. The magnet assembly 222 is used to interact with the current in the voice coil assembly 221 and thereby generate vibrations in the direction of the central axis. During vibration, the magnet assembly 222 can directly or indirectly set the cylindrical cover 210 in motion. The magnet assembly 222 and the voice coil assembly 221 move relative to each other in the direction of the central axis of the cylindrical cover 210.

[0156] For example, in the Fig. 8 and Fig. In the embodiment shown in Figure 9, the first of the voice coil assembly 221 and the magnet assembly 222 can be the voice coil assembly 221, while the second of the voice coil assembly 221 and the magnet assembly 222 can be the magnet assembly 222. Specifically, the voice coil assembly 221 is arranged on the inner wall of the cylindrical cover 210 and fixedly connected to the cylindrical cover 210, wherein the voice coil assembly 221 is arranged around the magnet assembly 222, the magnet assembly 222 being provided in the housing space 211 of the cylindrical cover 210 and spaced apart from the voice coil assembly 221, wherein the vibration transmission element 223 fixedly connects the magnet assembly 222 to the cylindrical cover 210. The magnetic assembly 222, the vibration transmission element 223, the sealing plate 230 are arranged one after the other in the direction of the central axis of the cylindrical cover 210.When the magnet assembly 222 and the voice coil assembly 221 interact, the magnet assembly 222 vibrates the cylindrical cover 210 via the vibration transmission element 223.

[0157] Of course, in other embodiments, the first of the voice coil assembly 221 and the magnet assembly 222 can be the magnet assembly 222, while the second of the voice coil assembly 221 and the magnet assembly 222 can be the voice coil assembly 221. Specifically, the magnet assembly 222 can be firmly in contact with the inner wall of the cylindrical cover 210, with the magnet assembly 222 being arranged around the voice coil assembly 221, the voice coil assembly 221 being connected to the cylindrical cover 210 via the vibration transmission element 223. In this way, the magnet assembly 222 and the voice coil assembly 221 interact with each other, with the magnet assembly 222 being able to directly vibrate the cylindrical cover 210, which in turn vibrates the housing assembly 100.

[0158] By elastically limiting the relative movement of the voice coil assembly 221 and the magnet assembly 222, the vibration transmission element 223 ensures that the magnet assembly 222 is always surrounded by the voice coil assembly 221, thereby maintaining the interaction between the magnetic field and the current between the voice coil assembly 221 and the magnet assembly 222 in order to maintain the vibration of the magnet assembly 222, so that the bone conduction loudspeaker 200 can realize the bone conduction function over a long period of time.

[0159] In some embodiments, as in Fig. Figure 16 shows that the vibration transmission element 223 is located between the second of the voice coil assembly 221 and the magnet assembly 222 and the corresponding sealing plate 230, wherein the sealing plate 230 is used to rigidly limit the extent of deformation of the vibration transmission element 223 in the direction of the central axis and thus rigidly limit the relative range of movement of the voice coil assembly 221 and the magnet assembly 222.

[0160] Specifically, during the interaction of the voice coil assembly 221 and the magnet assembly 222, the latter influences the vibration transmission element 223, causing elastic deformation of the vibration transmission element 223. By arranging the sealing plate 230 on the side of the vibration transmission element 223 facing away from the voice coil assembly 221 and the magnet assembly 222, in order to rigidly limit the extent of deformation of the vibration transmission element 223, it is therefore possible to prevent the vibration transmission element 223 from undergoing a deformation exceeding its elastic limit during a process in which it is driven to deform. This would result in a transition of the vibration transmission element 223 from elastic to plastic deformation, thus protecting the vibration transmission element 223.

[0161] The fixed position of the sealing plate 230 can be determined according to the relative range of motion of the voice coil assembly 221 and the magnet assembly 222, as well as the elastic limit of the vibration transmission element 223, so that the sealing plate 230 can restrict the relative range of motion of the voice coil assembly 221 and the magnet assembly 222. This allows the sealing plate 230 and the vibration transmission element 223 together to limit the relative range of motion of the voice coil assembly 221 and the magnet assembly 222 to the maximum relative range of motion. This protects the vibration transmission element 223, the voice coil assembly 221, and the magnet assembly 222, and can also improve the vibration effect of the bone conduction loudspeaker 200.

[0162] In some embodiments, as in Fig. 8 and Fig. Figure 16 shows that the vibration transmission element 223 comprises a central mounting section 2231, an outer annular mounting section 2232 surrounding the central mounting section 2231, and a connecting rod assembly 2233 connected between the central mounting section 2231 and the annular mounting section 2232, wherein the annular mounting section 2232 is connected to the cylindrical cover 210, and wherein the central mounting section 2231 is connected to the second of the voice coil assembly 221 and the magnet assembly 222.

[0163] The connecting rod assembly 2233 can deform elastically and, when current flows through the voice coil assembly 221, can elastically constrain the movement of the voice coil assembly 221 and the magnet assembly 222. Elastic constraint can be understood as the movement of the voice coil assembly 221 and the magnet assembly 222 relative to each other within the range of relative motion permitted by the elastic deformation of the connecting rod assembly 2233. The connecting rod assembly 2233 can, on the one hand, restrict the range of relative motion between the voice coil assembly 221 and the magnet assembly 222 in the direction of the central axis and, on the other hand, cause the voice coil assembly 221 and the magnet assembly 222 to return to their original position through elastic restoring force after the relative motion of the voice coil assembly 221 and the magnet assembly 222 has been reached.

[0164] The connecting rod assembly 2233 of the vibration transmission element 223 offers excellent elastic deformation capability, but it communicates with the interior of the cylindrical cover 210 and cannot form a sealed space with the cylindrical cover 210. However, by sealing the recesses in the vibration transmission element 223 with the sealing plate 230, a sealed space can be formed with the cylindrical cover 210. This configuration improves the performance of the magnetic circuit of the bone conduction loudspeaker 10 and enhances the sound effect.

[0165] In its natural state, the distance between the central mounting section 2231 and the corresponding sealing plate 230 is in the direction of the central axis. The natural state refers to a time when no current flows through the voice coil assembly 221, i.e., when the voice coil assembly 221 and the magnet assembly 222 are relatively stationary.When the voice coil assembly 221 and the magnet assembly 222 are relatively stationary, a space can be provided between the central mounting section 2231 and the corresponding sealing plate 230 in the direction of the central axis of the second voice coil assembly 221 and the magnet assembly 222 in which they can oscillate relative to the cylindrical cover 210 in the direction of the central axis, so that bone conduction to the human body of the user can take place via the cylindrical cover 210 and the housing assembly 100 in the direction of the central axis.

[0166] Optionally, in its natural state, the central mounting section 2231 can be positioned closer to the second of the voice coil assembly 221 and the magnet assembly 222 in the direction of the central axis than the annular mounting section 2232. Furthermore, in its natural state, the vibration transmission element 223 can exhibit a certain pre-deformation; that is, the connecting rod assembly 2233 of the vibration transmission element 223 has a certain pre-deformation. This ensures that, in its natural state, the two vibration transmission plates 223 can act on the magnet assembly 222 on both sides, thus ensuring that the magnet assembly 222 is located in the central position of the cylindrical cover 210. Additionally, this can result in more stable vibration of the magnet assembly 222 during subsequent vibration operations.

[0167] In the embodiments of the present application, the sealing plate 230 can be a flat plate, a concave plate whose central position relative to an edge position is recessed into the magnet assembly 222, or a convex plate whose central position relative to an edge position is curved outwards from the magnet assembly 222.

[0168] In some embodiments, the distance between the central mounting section 2231 and the corresponding sealing plate 230 is in a range between 0.005 and 0.8 mm.

[0169] By defining a distance between the central mounting section 2231 and the corresponding sealing plate 230, the drive assembly 220 can vibrate the central mounting section 2231 within this distance, in order to vibrate the cylindrical cover 210.

[0170] Optionally, the distance between the central mounting section 2231 and the corresponding sealing plate 230 can be the distance between the center point of the central mounting section 2231 and the center point of the sealing plate 230. As shown in Fig. As shown in Figure 9, the distance between the central mounting section 2231 and the corresponding sealing plate 230 can be represented by a distance H in this figure. For example, the distance between the center point of the central mounting section 2231 and the center point of the sealing plate 230 can be 0.2 mm, 0.5 mm, or 0.7 mm. Such a configuration of the distance between the central mounting section 2231 and the corresponding sealing plate 230 allows the sealing plate 230 to limit the vibration of the central mounting section 2231 and the drive assembly 220 accordingly, in order to prevent excessive vibration amplitude of the drive assembly 220 from causing deformation of the connecting rod assembly 2233 beyond its tolerance range and thus resulting in damage to it.

[0171] As in Fig. 8 and Fig. As shown in Figure 9, the magnetic assembly 222 can further comprise a magnet 2221 and two magnetically conductive plates 2222, wherein the two magnetically conductive plates 2222 are each arranged on both side faces of the magnet 2221, facing away from each other in the direction of the central axis. The magnetically conductive plate 2222 has a projection 2201 that projects in the direction of the central mounting section 2231, wherein the projection 2201 is firmly connected to the central mounting section 2231.

[0172] The magnetically conductive plates 2222 are used to limit the direction of the magnetic field of the magnet 2221 at both end surfaces, which are facing away from each other in the direction of the central axis of the magnet 2221, in order to increase the interaction between the magnet 2221 and the voice coil 2211.

[0173] The two projections 2201 of the two magnetically conductive plates 2222 each project towards the central mounting section 2231 of the two vibration transmission plates 223, which are opposite the two magnetically conductive plates 2222. That is, the directions of the two projections 2201 are opposite.By firmly connecting the projection 2201 to the central mounting section 2231, a relatively stable fixed connection can be achieved between the two magnetically conductive plates 2222 and the two vibration transmission plates 223. Furthermore, the connection point of the magnetically conductive plate 2222 with the vibration transmission element 223 does not occupy too much space in the connecting rod assembly 2233, thus providing sufficient space for elastic deformation in the connecting rod assembly 2233 and improving the elasticity of the vibration transmission element 223.

[0174] In some embodiments, as in Fig. 8 and Fig. Figure 9 shows that the voice coil assembly 221 further comprises two groups of voice coils 2211 spaced apart from each other in the direction of the central axis, wherein the cylindrical cover 210 is wound around the outside of the two groups of voice coils 2211, wherein projections of the two magnetically conductive plates 2222 in a radial direction of the bone conduction loudspeaker 200 are arranged at least partially overlapping with the two groups of voice coils 2211, wherein the current directions of the two groups of voice coils 2211 are opposite to each other.

[0175] The radial direction of the bone conduction loudspeaker 200 is indicated by the arrow Y in Fig. Figure 9 illustrates this. The arrangement, in which the projections of the two magnetically conductive plates 2222 overlap at least partially with the two groups of voice coils 2211 in the radial direction of the bone conduction loudspeaker 200, enhances the interaction between the two magnetically conductive plates 2222, the magnet 2221, and the two voice coils 2211, thereby increasing the sensitivity of the magnet assembly 222. Furthermore, the opposite current directions of the two voice coils 2211 ensure that the two voice coils 2211 experience forces in the same direction when interacting with the same magnet 2221, allowing the magnet 2221 to move in the same direction under the influence of the two voice coils 2211 and the magnetic field.And by changing the current direction of the two voice coils 2211, it is possible to enable the magnet 2221 to generate a vibration in the direction of the central axis.

[0176] In some embodiments, the accommodation space 211 is filled with a magnetofluid, wherein the magnetofluid occupies at least a part of the accommodation space 211.

[0177] The magnetofluid is also known as magnetic fluid, ferrofluid, or magnetic liquid. It exhibits both the fluidity of a liquid and the magnetic properties of a solid magnetic material. The magnetofluid has a higher magnetic conductivity than air, which can enhance the magnetic field effect of the magnet assembly 222, thereby making the magnet assembly 222 more sensitive to vibration. Furthermore, the presence of the magnetofluid can also reduce the resistance to relative movement between the voice coil assembly 221 and the magnet assembly 222, thus improving the vibration effect and effectively enhancing the sound quality. This, in turn, improves the bone conduction effect of the bone conduction loudspeaker 200 and the sound effect of the loudspeaker arrangement 10.

[0178] Optionally, the magnetofluid can be set aside to completely fill the housing space 211. This configuration reduces flow resistance and improves the bone conduction effect of the bone conduction loudspeaker 200.

[0179] In some embodiments, the air conduction loudspeaker 300 and the housing assembly 100 become a vibration load because the bone conduction loudspeaker 200, in generating vibrations on its axis, causes the housing assembly 100 to vibrate. In related technologies, the air conduction loudspeaker 300 is typically located off-axis with the bone conduction loudspeaker 200; for example, the air conduction loudspeaker 300 is often arranged in a radial direction perpendicular to the bone conduction loudspeaker 200's axis. In this case, the mass of the air conduction loudspeaker 300 causes a displacement of the bone conduction loudspeaker 200's vibration, so that the loudspeaker assembly 10 generates two torques in different directions and the bone conduction loudspeaker 200's vibration on its axis is attenuated, thereby reducing the volume of the bone conduction component of the earphone 1.

[0180] To solve the above problem, the following exemplary embodiments describe the content with regard to the position, structure, etc. of the bone conduction loudspeaker 200 and the air conduction loudspeaker 300 in the loudspeaker arrangement 10.

[0181] As in Fig. 17 and Fig. Figure 18 shows a bone conduction core module 200 and an air conduction core module 300 arranged in a housing assembly 100, as previously described. The bone conduction core module 200 can also be referred to as a bone conduction loudspeaker 200 and is used to transmit sound to the user via bone conduction vibration. The air conduction core module 300 can be referred to as an air conduction loudspeaker 300 and is used to transmit sound into the user's ear canal according to the air vibration principle.

[0182] Optionally, the housing assembly 100 can be provided with a receiving chamber 110. The bone conduction core module 200 can be arranged in the receiving chamber 110 and generate vibrations in a first vibration direction. The air conduction core module 300 is arranged in the receiving chamber 110, and the air conduction core module and the bone conduction core module 200 are arranged correspondingly to each other in the first vibration direction. The corresponding arrangement of the air conduction core module 300 and the bone conduction core module 200 means, in particular, that on a reference plane perpendicular to the first vibration direction, the projections of the air conduction core module 300 and the bone conduction core module 200 have an overlapping area.

[0183] The first vibration direction of the bone conduction core module 200 can be identical to the direction of the central axis of the bone conduction core module 200. The two directions can be distinguished by the arrow X in Fig. 18 are shown.

[0184] Positioning the air conduction core module 300 in the first vibration direction of the bone conduction core module 200 can result in the mass of the air conduction core module 300 being more strongly concentrated on the axis of the bone conduction core module 200. When the bone conduction core module 200 vibrates in the first vibration direction, the displacement effect of the air conduction core module 300 on the vibration of the bone conduction core module 200 is attenuated, so that the bone conduction core module 200 can better set the housing assembly 100 into vibration in the first vibration direction, with the sound quality produced by the vibration of the bone conduction core module 200 being purer and conforming to the acoustic design principles.In this way, the influence of the mass of the air conduction core module 300 on the vibration effect of the bone conduction core module 200 is reduced, giving the bone conduction core module 200 a better bone conduction effect and improving the sound effect of the bone conduction component of the earphone 1.

[0185] In some embodiments, the air duct core module can generate 300 vibrations in a second vibration direction. The first and second vibration directions form an angle of 70° to 100° or 80° to 90°.

[0186] Because the first and second vibration directions are different and intersect, the mutual interference between the air conduction core module 300 and the bone conduction core module 200 can be reduced, so that the air conduction core module 300 has a better sound output effect and the bone conduction core module 200 has a good bone conduction effect.

[0187] The angle between the first and second vibration directions can be 75°, 85°, or 95°. For example, the first and second vibration directions can optionally be perpendicular to each other, meaning the angle between them can be 90°. The second vibration direction can be the axial direction of the air duct core module 300, with the second vibration direction pointing towards arrow Y in Fig. 18 can be obtained.

[0188] Such a configuration can largely reduce the mutual interference between the air conduction core module 300 and the bone conduction core module 200, so that the respective vibrations are not easily affected by the vibration of the other, thereby improving the sound quality of the earphone 1.

[0189] In some embodiments, as in Fig. 17 to Fig. Figure 18 shows that the housing assembly 100 is provided with a first side surface 107, a second side surface 108, and a vibration transmission surface 109 (i.e., the previously mentioned face contact side), wherein the first side surface 107, the second side surface 108, and the vibration transmission surface 109 cannot be coplanar to each other, and wherein the first side surface 107 and the second side surface 108 are spaced apart from each other in a direction perpendicular to the first vibration direction. A sound outlet opening 114, which penetrates the first side surface 107 and communicates with the receiving chamber 110, and a pressure relief opening 115, which penetrates the second side surface 108 and communicates with the receiving chamber 110, can be provided on the housing assembly 100.

[0190] The sound outlet 114 and the pressure relief vent 115 are each used to direct at least a portion of the sound waves generated by the air conduction core module 300 to the external environment. The difference lies in the fact that the sound outlet 114 is normally positioned towards or near the user's ear to direct some of the sound waves generated by the air conduction core module 300 into the user's ear, and that the pressure relief vent 115 is used to release the air in the receiving chamber 110 that dampens the vibration of the air conduction loudspeaker 300, thus equalizing the pressure in the receiving chamber 110 to reduce the impact of the vibration effect of the air conduction core module 300.

[0191] By arranging the sound outlet 114 and the pressure relief opening 115 on the first side surface 107 and the second side surface 108, respectively, which are positioned opposite each other, the distance between the sound outlet 114 and the pressure relief opening 115 can be relatively increased in order to reduce mutual interference, in particular destructive interference, between some of the sound waves exiting the pressure relief opening 115 and the sound waves directed by the sound outlet 114, thereby improving the quality of the sound directed from the sound outlet 114. In other embodiments, the positions of the sound outlet 114 and the pressure relief opening 115 on the housing assembly 100 can be reversed to adapt to the specific position of the human ear.

[0192] Optionally, the vibration transmission surface 109 can be oriented perpendicular to the first vibration direction, with the bone conduction core module 200 transmitting vibrations to the outside via the vibration transmission surface 109. Such a configuration can result in the pressure relief opening 115, the sound outlet opening 114, and the vibration transmission surface 109 all being non-coplanar, thus preventing the sound waves directed through the sound outlet opening 114, the sound waves emitted from the pressure relief opening 115, and the vibrations on the vibration transmission surface 109 from easily interfering with each other. Consequently, the sound effect of the loudspeaker arrangement 10 is improved by the sound outlet opening 114 and the pressure relief opening 115.

[0193] In some embodiments, as in Fig. Figure 18 shows that the air conduction core module 300 is stacked with the bone conduction core module 200 in the first vibration direction. In other words, the air conduction core module 300 and the bone conduction core module 200 are stacked in the first vibration direction. Optionally, the air conduction core module 300 can be rigidly connected to the bone conduction core module 200.

[0194] By attaching the air conduction core module 300 to the bone conduction core module 200 in the first vibration direction, it is made easier for the bone conduction core module 200 to vibrate the air conduction core module 300, thereby reducing the influence of the counterweight of the air conduction core module 300 on the vibration of the bone conduction core module 200 and thus ensuring the bone conduction effect of the loudspeaker arrangement 10.

[0195] In some embodiments, as in Fig. Figure 19 shows that an elastic damping element 600 is provided between the air conduction core module 300 and the bone conduction core module 200. The elastic damping element 600 can be an elastic colloid (e.g., silica gel, rubber, etc.), a spring, an airbag, or a magnetofluid, etc. This configuration reduces the effects and limitations of the air conduction core module 300 on the vibration of the bone conduction core module 200, allowing the bone conduction core module 200 to oscillate more freely and improving the vibration effect. Furthermore, the elastic damping element 600 protects the air conduction core module 300.

[0196] In some embodiments, at least one of the air conduction core module 300 and the bone conduction core module 200 can be fixed relative to the housing assembly 100. Optionally, the air conduction core module 300 and the bone conduction core module 200 can each be rigidly connected to the housing assembly 100. Such a configuration can improve the operational stability of the bone conduction core module 200 and the air conduction core module 300.

[0197] In some embodiments, as in Fig. As shown in Figure 20, the air conduction core module 300 is arranged at a distance from the bone conduction core module 200 in the first vibration direction. This reduces the influence of the weight of the air conduction core module 300 on the displacement of the vibration of the bone conduction core module 200; furthermore, the distance between the two modules also reduces the mutual influence of their vibrations and decreases the probability of vibration interference. Optionally, the air conduction core module 300 can be rigidly connected to the housing assembly 100. And when the bone conduction core module 200 sets the housing assembly 100 into vibration, the housing assembly 100 further sets the air conduction core module 300 into vibration.

[0198] Optionally, the housing assembly 100 can be provided with a partition 150, wherein the receiving chamber 110 can comprise a first receiving chamber 111 and a second receiving chamber 112, which are separated from each other by the partition 150. The bone conduction core module 200 is arranged in the first receiving chamber 111, and the air conduction core module 300 is arranged in the second receiving chamber 112.

[0199] Optional includes, as in Fig. Figure 19 shows the housing assembly 100 comprising a first housing 120, a second housing 130, and a third housing 140, wherein the second housing 130 is joined with the first housing 120 and, fitted with it, forms the first receiving chamber 111, and wherein the third housing 140 is joined with both the first housing 120 and the second housing 130 and, fitted with the first housing 120, forms the second receiving chamber 112. The above configuration allows the loudspeaker assembly 10 to be easily assembled and disassembled.

[0200] Since the bone conduction core module 200 requires a highly sealed environment to ensure the bone conduction effect, the bone conduction effect of the bone conduction core module 200 can be improved by arranging the bone conduction core module 200 and the air conduction core module 300 in separate chambers. Optionally, the first receiving chamber 111 can be sealed to provide it with improved airtightness.

[0201] Optionally, the shape or dimensions of the first recording chamber 111 are adapted to the shape or dimensions of the bone conduction core module 200. In this way, the dimensions of the loudspeaker assembly 10 can be reduced, and it is made easier for the bone conduction core module 200 to vibrate the housing assembly 100 and transmit the bone conduction to the user's human body.

[0202] In some embodiments, as in Fig. Figure 20 shows that the air-conducting core module 300 generates vibrations in a second vibration direction. The housing assembly 100 is provided with a sound outlet opening 114 and a pressure relief opening 115, which communicate with the second receiving chamber 112. The sound outlet opening 114 is used to divert some of the sound waves generated by the air-conducting loudspeaker 300 away from the loudspeaker arrangement 10, while the pressure relief opening 115 is used to connect the second receiving chamber 112 to the external environment to ensure air pressure equalization inside the second receiving chamber 112 and to reduce any air pressure buildup that would impair the sound effect generated by the air-conducting loudspeaker 300.

[0203] The sound outlet 114 and the pressure relief opening 115 are provided in two side walls of the housing assembly 100, spaced apart from each other in the second vibration direction. This configuration reduces the mutual interference of the sound waves transmitted by the sound outlet 114 and the pressure relief opening 115, thereby improving the sound effect of the loudspeaker arrangement 10.

[0204] In some embodiments, as in Fig. Figure 20 shows that the bone conduction core module 200 has a first central axis X extending in the first vibration direction. The air conduction core module 300 can generate vibrations in a second vibration direction and has a second central axis Y extending in the second vibration direction. The angle between the first central axis X and the second central axis Y can be between 70° and 100°.

[0205] For example, the angle between the first central axis X and the second central axis Y can be 80°, 85°, 90°, etc. Optionally, the angle between the first central axis X and the second central axis Y can be 90°. Such a configuration reduces the mutual interference between the vibration of the bone conduction core module 200 and the vibration of the air conduction core module 300, thus ensuring the sound effect of the loudspeaker arrangement 10.

[0206] In some embodiments, as in Fig. Figure 20 shows that the second housing 130 has a contact area 131 which, when worn, is in contact with the user's face. A seam 132 between the first housing 120 and the second housing 130 is located outside the contact area 131. By placing the seam 132 between the first housing 120 and the second housing 130 outside the contact area 131 instead of within it, the seam 132 is prevented from easily pinching the skin when the earphone 1 is used.

[0207] In some embodiments, the air conduction core module 300 and the bone conduction core module 200 can be arranged in the first vibration direction. Optionally, the projections of the bone conduction core module 200 and the air conduction core module 300 onto a reference plane perpendicular to the first vibration direction can have an overlapping area.

[0208] As in Fig. As shown in Figure 21, the projection of the bone conduction core module 200 onto the reference plane perpendicular to the first vibration direction can be determined by K in Fig. 21 is shown, where the projection of the air duct core module 300 onto the reference plane perpendicular to the first vibration direction by J in Fig. 21 can be represented, where J and K have an overlapping area. The above configuration facilitates the vibration of the air conduction core module 300 by the bone conduction core module 200 in the first vibration direction.

[0209] The structure of the bone conduction core module 200 is comparatively compact, resulting in a relatively concentrated and uniform mass. The vibration of the air conduction core module 300 originates primarily from the membrane 310. The membrane 310 occupies a large volume but has a low mass; its mass is concentrated mainly on one side of the air conduction core module 300 that is furthest from the membrane 310, i.e., near the magnetic circuit assembly 322. The volume of the bone conduction core module 200 and the air conduction core module 300 is specifically designed according to the acoustic requirements. Therefore, the overlapping area of ​​the bone conduction core module 200 and the air conduction core module 300 perpendicular to the first vibration direction is designed as follows: Optionally, the ratio between the overlapping area and the projection area of ​​the duct core module 300 onto the reference plane can be greater than 20%, 40%, or 60%. For example, the ratio between the overlapping area and the projection area of ​​the duct core module 300 onto the reference plane can be 25%, 45%, 50%, or 100%.

[0210] Optionally, the ratio between the overlapping area and the projection area of ​​the Bone Conduction Core Module 200 onto the reference plane can be greater than 20%, 40%, or 60%. For example, the ratio between the overlapping area and the projection area of ​​the Bone Conduction Core Module 200 onto the reference plane can be 25%, 45%, 50%, or 100%.

[0211] Such a configuration of the arrangement mode of the air conduction core module 300 and the bone conduction core module 200 effectively enables the majority of the weight of the air conduction core module 300 to fall onto the bone conduction core module 200 in the first vibration direction, thereby reducing the influence of the air conduction core module 300 on the vibration of the bone conduction core module 200, thus improving the vibration effect of the bone conduction core module 200 and increasing the sound effect of the bone conduction of the bone conduction core module 200.

[0212] In some embodiments, as in Fig. Figure 21 shows that the distance between the projection of the center of mass of the bone conduction core module 200 onto a reference plane perpendicular to the first vibration direction and the projection of the center of mass of the air conduction core module 300 onto the reference plane is less than 0.5 mm. The center of mass of the bone conduction core module 200 can be defined by point O in Fig. 20 are shown, and the center of mass of the air duct core module 300 is defined by point Q in Fig. 20 shown.

[0213] The smaller the distance between the center of mass of the bone conduction core module 200 and the center of mass of the air conduction core module 300 in the direction perpendicular to the first vibration direction, the less the vibration of the bone conduction core module 200 is affected by a weight offset of the air conduction core module 300, and the better the vibration effect and the better the sound effect.

[0214] Optionally, the distance can be 0 to 0.4 mm or 0 to 0.2 mm. As in Fig. As shown in Figure 20, the distance between the center of mass of the bone conduction core module 200 and the center of mass of the air conduction core module 300 can be 0 mm. This means that both the center of mass of the air conduction core module 300 and the center of mass of the bone conduction core module 200 are located in the direction of the first vibration direction. In other words, on the reference plane perpendicular to the first vibration direction, the center of mass of the air conduction core module 300 and the center of mass of the bone conduction core module 200 completely overlap.Therefore, by such a configuration of the distance between the two, the different torques generated by the vibration of the bone conduction core module 200 and the air conduction core module 300 can be reduced, allowing the bone conduction core module to have a better bone conduction effect, so that the loudspeaker arrangement 10 has a better sound effect.

[0215] Of course, in other embodiments, the distance between the projection of the center of mass of the air conduction core module 300 and the projection of the center of mass of the bone conduction core module 200 on the reference plane perpendicular to the first vibration direction can also be 0.1 mm, 0.25 mm, 0.3 mm, etc. These are not listed in detail in this exemplary embodiment.

[0216] Alternatively, the bone conduction core module 200 can have a first central axis X, where the first vibration direction is the direction of the first central axis X. The distance between the center of mass of the air conduction core module 300 and the first central axis X is less than or equal to 0.5 mm. Likewise, the closer the center of mass of the air conduction core module 300 is to the first central axis X, the less influence the air conduction core module 300 has on the vibration of the bone conduction core module 200.

[0217] For example, optionally, as in Fig. Figure 20 shows that the distance between the center of mass of the air conduction core module 300 and the first central axis X is equal to 0 mm. Such a configuration of the distance between the two also makes it easier for the bone conduction core module 200 to oscillate in the direction of the first central axis X with the air conduction core module 300, thereby enabling the bone conduction loudspeaker 200 to exhibit a better bone conduction effect, so that the loudspeaker arrangement 10 has a better sound effect.

[0218] Similarly, in other embodiments, the distance between the center of mass of the air duct core module 300 and the first central axis X can also be 0.1 mm, 0.2 mm, 0.3 mm, etc. These are not listed in detail in this exemplary embodiment.

[0219] In some embodiments, such as in Fig. As shown in Figure 21, the bone conduction core module 200 can be designed as a sealed structure, whereby the interior of the bone conduction core module 200 and the recording chamber 110 can be isolated from each other.

[0220] Optionally, as in Fig. 8 and Fig. Figure 9 shows that the bone conduction core module 200 comprises a cylindrical cover 210, a drive assembly 220, and two sealing plates 230. The cylindrical cover 210 is rigidly connected to the housing assembly 100, with the drive assembly 220 being arranged within the cylindrical cover 210. The drive assembly 220 is used to vibrate the cylindrical cover 210, thereby also vibrating the housing assembly 100. The two sealing plates 230 are each arranged at both ends of the cylindrical cover 210 and seal the cylindrical cover 210 to form the sealed structure.

[0221] Vibrations generated by the drive assembly 220 within the sealed cylindrical cover 210 prevent the drive assembly 220 from being easily affected by air resistance and other factors during vibration, thus ensuring that the bone conduction core module 200 exhibits good bone conduction performance. Furthermore, in the event of a fall or impact of the earphone 1, the closed cylindrical cover 210 also prevents the drive assembly 220 from falling out of the cylindrical cover 210 and thus damaging the internal structure, thereby improving the structural stability of the bone conduction core module 200.

[0222] Optionally, the bone conduction core module 200 can include a vibration transmission element 223, wherein the drive assembly 220 comprises a voice coil assembly 221 and a magnet assembly 222, wherein the voice coil assembly 221 is mounted on the magnet assembly 222, wherein the vibration transmission element 223 firmly connects the cylindrical cover 210 to the magnet assembly 222, and wherein the voice coil assembly 221 is firmly connected to the cylindrical cover 210. The voice coil assembly 221 is used to receive electrical signals and interact with the magnet assembly 222 to vibrate the magnet assembly 222, the magnet assembly 222 being used to vibrate the cylindrical cover 210 after the interaction with the voice coil assembly 221, the vibration transmission element 223 being used to limit the position of the magnet assembly 222.Specifically, by having the two sealing plates 230 cover and close the cylindrical cover 210 to form a sealed structure, the direction of the magnetic field can be better limited, making the vibration of the magnet assembly 222 more sensitive, and also preventing the vibration transmission element 223 and the magnet assembly 222 from falling out of the cylindrical cover 210.

[0223] In some embodiments, the magnetofluid can occupy at least part of the interior of the cylindrical cover 210. The magnetofluid is also known as magnetic fluid, ferrofluid, or magnetic liquid. The magnetofluid exhibits both the flowability of a liquid and the magnetic properties of a solid magnetic material. The magnetofluid has a higher magnetic conductivity than air, which can enhance the magnetic field effect of the magnet assembly 222, thereby making the magnet assembly 222 more sensitive to vibration. This, in turn, improves the bone conduction effect of the bone conduction core module 200 and the sound effect of the loudspeaker arrangement 10.

[0224] Optionally, the magnetofluid can be set aside to completely fill the interior of the cylindrical cover 210. This configuration reduces flow resistance and improves the bone conduction effect of the bone conduction core module 200.

[0225] Based on the above embodiments, the earphone 1 can comprise the loudspeaker arrangement 10 of the various embodiments described above.

[0226] In summary, the present application allows the air conduction core module 300 and the bone conduction core module 200 to be positioned in the first vibration direction of the bone conduction core module 200, and the corresponding arrangement of the air conduction core module 300 and the bone conduction core module 200 in the first vibration direction, thereby concentrating the mass of the air conduction core module 300 more strongly on the axis of the bone conduction core module 200. This weakens the displacement effect of the air conduction core module 300 on the vibration of the bone conduction core module 200. Thus, when the bone conduction core module 200 vibrates, it can better set the air conduction core module 300 in motion, reducing the influence of the mass of the air conduction core module 300 on the vibration effect of the bone conduction core module 200 and increasing the sound level.This improves the bone conduction effect of the loudspeaker arrangement and thus the sound effect of the loudspeaker arrangement 10.

[0227] The above-mentioned examples are only some of the embodiments of the present application and do not limit the scope of protection of the present application. Any equivalent transformation with respect to the device or process carried out using the content of the description and drawings of the present application, as well as any direct or indirect application of such content to other related technical fields, also falls within the scope of protection of the present application.

Claims

[1] Loudspeaker arrangement, characterized by that it includes: a housing assembly that is provided with a receiving space; a bone conduction core module that is provided in the recording space and generates vibrations in a first vibration direction; and an air conduction core module provided in the recording chamber, wherein the air conduction core module and the bone conduction core module are arranged accordingly in the first vibration direction, wherein the distance between the projection of the center of mass of the bone conduction core module onto a reference plane perpendicular to the first vibration direction and the projection of the center of mass of the air conduction core module onto the reference plane is less than 0.5 mm; or wherein the bone conduction core module has a first central axis extending in the first vibration direction; and wherein the distance between the center of mass of the air conduit core module and the first central axis is less than or equal to 0.5 mm. [2] Loudspeaker arrangement according to claim 1, characterized by that the distance is 0 to 0.4 mm or 0 to 0.2 mm. [3] Loudspeaker arrangement according to one of claims 1 and 2, characterized by , that the projections of the bone conduction core module and the air conduction core module onto the reference plane, which is perpendicular to the first vibration direction, have an overlapping area, where the ratio between the overlapping area and the projection area of ​​the air duct core module onto the reference plane is greater than 60%, and / or where the ratio between the overlapping area and the projection area of ​​the bone conduction core module onto the reference plane is greater than 60%. [4] Loudspeaker arrangement according to any one of claims 1 to 3, characterized by, that the air conduction core module is arranged at a distance from the bone conduction core module in the first direction of vibration, wherein the housing assembly is provided with a partition, wherein the receiving space comprises a first receiving chamber and a second receiving chamber which are separated from each other by the partition, and wherein the bone conduction core module is located in the first recording chamber and the air conduction core module is located in the second recording chamber. [5] Loudspeaker arrangement according to claim 4, characterized by , that the housing assembly comprises a first housing, a second housing and a third housing, wherein the second housing is joined with the first housing and, fitted with it, forms the first receiving chamber, wherein the third housing is joined with the first housing and the second housing respectively, and, fitted with the first housing, forms the second receiving chamber. [6] Loudspeaker arrangement according to claim 5, characterized by , that the bone conduction core module has a first central axis extending in the first vibration direction, with the air conduction core module generating vibrations in a second vibration direction, and has a second central axis extending in the second vibration direction, with the first central axis and the second central axis forming an angle of 70° to 100°, wherein the third housing is located on a side of the first housing facing away from the second housing in the first direction of vibration, and wherein the third housing has a cross-sectional dimension perpendicular to the first direction of vibration which gradually or stepwise decreases in a direction away from the second housing. [7] Loudspeaker arrangement according to any one of claims 4 to 6, characterized by, that the housing assembly is provided with a communication opening which brings the first recording chamber into communication with the second recording chamber, wherein the bone conduction loudspeaker is located in the first recording chamber and closes the communication opening, so that the first recording chamber and the second recording chamber 112 are isolated from each other. [8] Loudspeaker arrangement according to any one of claims 4 to 7, characterized by , that the air duct core module generates vibrations in a second vibration direction, wherein a sound outlet opening and a pressure relief opening are provided in the housing assembly, which communicate with the second receiving chamber, and wherein the sound outlet opening and the pressure relief opening are arranged in two side walls of the housing assembly, which are spaced apart from each other in the second vibration direction. [9] Loudspeaker arrangement according to claim 8, characterized by, that the air-conducting loudspeaker is arranged such that it divides the second receiving chamber into a first sub-chamber and a second sub-chamber which are isolated from each other, wherein the first sub-chamber and the second sub-chamber are not in communication with each other, wherein the sound outlet opening is in communication with the first sub-chamber, and wherein the pressure relief opening is in communication with the second sub-chamber. [10] Loudspeaker arrangement according to claim 9, characterized by that the housing assembly is provided with a communication opening that brings the first receiving chamber into communication with the second receiving chamber, wherein the communication opening is in communication with the second sub-chamber. [11] Loudspeaker arrangement according to one of claims 9 and 10, characterized by, that the air conduction loudspeaker comprises a diaphragm and a drive mechanism, wherein the drive mechanism is connected to the diaphragm, wherein an inner sound chamber may be enclosed between the diaphragm and the drive mechanism, and wherein the second sub-chamber is located on one side of the diaphragm facing away from the inner sound chamber. [12] Loudspeaker arrangement according to any one of claims 1 to 11, characterized by , that the bone conduction core module is designed as a sealed structure, with the interior of the bone conduction core module and the receiving chamber being isolated from each other. [13] Loudspeaker arrangement according to claim 12, characterized by , that The bone conduction core module comprises a cylindrical cover, a drive assembly, and two sealing plates. wherein the cylindrical cover is rigidly connected to the housing assembly, wherein the drive assembly is arranged in the cylindrical cover, wherein the drive assembly is used to vibrate the cylindrical cover and thereby vibrate the housing assembly, and wherein the two sealing plates are arranged at both ends of the cylindrical cover and close the cylindrical cover to form the sealed structure. [14] Loudspeaker arrangement according to any one of claims 1 to 13, characterized by , that The housing assembly is provided with a first side surface, a second side surface, and a vibration transmission surface, wherein the first side surface, the second side surface, and the vibration transmission surface are not coplanar to each other, wherein the first side surface and the second side surface are spaced apart from each other in a direction perpendicular to the first vibration direction, wherein the housing assembly includes a sound outlet opening that penetrates the first side surface and communicates with the receiving space, and a pressure relief opening that penetrates the second side surface and communicates with the receiving space. wherein the vibration transmission surface is perpendicular to the first vibration direction, and wherein the bone conduction core module transmits vibrations to the outside via the vibration transmission surface. [15] Earphones, characterized bythat it comprises a loudspeaker arrangement according to any one of claims 1 to 14.

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