Loudspeaker and electronic equipment

Abstract

The invention provides a loudspeaker and electronic equipment. The loudspeaker comprises a shell, a magnetic circuit assembly, a first vibrating diaphragm, a second vibrating diaphragm, a voice coil, a first adjusting part and a second adjusting part, the shell is provided with an inner cavity; the magnetic circuit assembly is located in the inner cavity and fixedly connected with the shell. The magnetic circuit assembly is provided with a magnetic gap. The first vibrating diaphragm and the second vibrating diaphragm are respectively positioned on two opposite sides of the magnetic circuit assembly, and the periphery of the first vibrating diaphragm and the periphery of the second vibrating diaphragm are fixedly connected to the shell; the voice coil is connected between the first vibrating diaphragm and the second vibrating diaphragm, and at least part of the voice coil is located in the magnetic gap; the first adjusting piece and the second adjusting piece are located on the two opposite sides of the magnetic circuit assembly respectively, at least parts of the first adjusting piece and the second adjusting piece directly face the magnetic gap in the thickness direction of the loudspeaker, the first adjusting piece is fixed to the first vibrating diaphragm and / or the voice coil, and the second adjusting piece is fixed to the second vibrating diaphragm and / or the voice coil. The first adjusting piece and the second adjusting piece are magnetic pieces. The low-frequency radiation capability of the loudspeaker and the electronic equipment is better.

Description

Technical Field

[0001] The present application relates to the field of audio technology, and in particular to a speaker and an electronic device. Background Art

[0002] Speakers, as a common electroacoustic transducer, are widely used in various electronic devices (such as mobile phones and smart glasses). Smart glasses typically use dual-diaphragm speakers with the same direction. The upper and lower diaphragms of the speaker vibrate in the same direction, forming a dipole when radiating outward. The sound waves radiated from the upper and lower diaphragms cancel each other outward at the sides of the glasses, achieving directional sound, reducing lateral sound leakage through the glasses, and improving the privacy of voice content. However, dual-diaphragm speakers with the same direction have poor low-frequency radiation capability and low low-frequency sensitivity. Summary of the Invention

[0003] The present application provides an electronic device and an electronic device including the speaker. The speaker and the electronic device provided in the present application have good low-frequency radiation capability.

[0004] In a first aspect, a loudspeaker is provided, which includes a shell, a magnetic circuit assembly, a first diaphragm, a second diaphragm, a voice coil, a first adjusting member and a second adjusting member; the shell has an inner cavity; the magnetic circuit assembly is located in the inner cavity and fixedly connected to the shell, and the magnetic circuit assembly is provided with a magnetic gap; the first diaphragm and the second diaphragm are respectively located on opposite sides of the magnetic circuit assembly, and the periphery of the first diaphragm and the periphery of the second diaphragm are both fixedly connected to the shell; the voice coil is located between the first diaphragm and the second diaphragm and fixedly connected to the first diaphragm and the second diaphragm, and the voice coil is at least partially located in the magnetic gap; the first adjusting member and the second adjusting member are respectively located on opposite sides of the magnetic circuit assembly, and in the thickness direction of the loudspeaker, the first adjusting member and the second adjusting member are at least partially facing the magnetic gap, the first adjusting member is fixed to the first diaphragm and / or the voice coil, and the second adjusting member is fixed to the second diaphragm and / or the voice coil, wherein the first adjusting member and the second adjusting member are both magnetic members.

[0005] The speaker provided in the present application includes a first adjusting member and a second adjusting member, both of which are magnetic members, and both of which are at least partially facing the magnetic gap. By setting the relative positions of the first adjusting member, the second adjusting member and the magnetic gap, when the speaker is working, an interaction force is formed between the first adjusting member and the magnetic gap, and an interaction force is formed between the second adjusting member and the magnetic gap. Through the coordination of these two forces, the first adjusting member and the second adjusting member can provide a negative stiffness coefficient for the speaker, thereby reducing the stiffness of the vibration component during vibration. In this way, it is beneficial to enhance the low-frequency radiation capability of the speaker and improve the low-frequency sensitivity of the speaker. In other words, the low-frequency performance of the speaker is improved.

[0006] It is understood that the second diaphragm, magnetic circuit assembly, and first diaphragm of the speaker are arranged sequentially along the thickness direction of the speaker. In some embodiments, the first and second diaphragms can be parallel to each other, with the first and second diaphragms being perpendicular to the thickness direction of the speaker. Along the thickness direction of the speaker, a partial or full projection of the first adjustment member overlaps with a projection of the magnetic gap. A partial or full projection of the second adjustment member overlaps with a projection of the magnetic gap.

[0007] It is understood that the first adjusting member may be fixedly connected to the first diaphragm, or the first adjusting member may be fixedly connected to the voice coil, or the first adjusting member may be fixedly connected to both the first diaphragm and the voice coil. The second adjusting member may be fixedly connected to the second diaphragm, or the second adjusting member may be fixedly connected to the voice coil, or the second adjusting member may be fixedly connected to both the second diaphragm and the voice coil.

[0008] In one possible implementation, the first adjustment member is positioned between the first diaphragm and the voice coil, and fixedly connects the two. In this case, the first adjustment member can better face the magnetic gap of the magnetic circuit assembly, resulting in a larger facing area. The force between the first adjustment member and the magnetic gap changes more sensitively to changes in the position of the first adjustment member, thereby enhancing the effectiveness of the speaker's negative stiffness system.

[0009] In one possible implementation, the second adjustment member is located between the second diaphragm and the voice coil, and fixedly connects the two. In this case, the second adjustment member can better face the magnetic gap of the magnetic circuit assembly, and the facing area between the two is larger. The force between the second adjustment member and the magnetic gap changes more sensitively to changes in the position of the second adjustment member, thereby enhancing the effectiveness of the speaker's negative stiffness system.

[0010] In a possible implementation, the first adjusting member and / or the second adjusting member is soft iron. In this case, the cost of soft iron is relatively low, which is conducive to reducing the production cost of the speaker.

[0011] In one possible implementation, the magnetic gap includes a first sub-magnetic gap and a second sub-magnetic gap arranged at intervals, the first sub-magnetic gap and the second sub-magnetic gap are arranged in the thickness direction of the speaker, and the magnetic field direction of the first sub-magnetic gap is opposite to the magnetic field direction of the second sub-magnetic gap; the voice coil includes a first side portion and a second side portion that are opposite and spaced apart, the first side portion is fixedly connected to the first diaphragm and is at least partially located in the first sub-magnetic gap, and the second side portion is fixedly connected to the second diaphragm and is at least partially located in the second sub-magnetic gap.

[0012] In this embodiment, when the voice coil is energized, the directions of the currents passing through the first side portion and the second side portion are opposite, and the direction of the magnetic field of the first sub-magnetic gap is opposite to the direction of the magnetic field of the second sub-magnetic gap, so that the directions of the Ampere forces acting on the first side portion and the second side portion in the magnetic field are the same, and the voice coil can move in the direction of the Ampere force, the movement consistency of the voice coil is strong, and the driving efficiency is high.

[0013] In one possible implementation, the magnetic circuit assembly includes a first magnetic assembly and a second magnetic assembly, and the first magnetic assembly and the second magnetic assembly are arranged along the thickness direction of the speaker; the first magnetic assembly includes a first magnetic member and a second magnetic member arranged at intervals, and the arrangement direction of the first magnetic member and the second magnetic member is perpendicular to the thickness direction of the speaker, the polarities of the opposite ends of the first magnetic member and the second magnetic member are opposite, and a first sub-magnetic gap is formed between the first magnetic member and the second magnetic member; the second magnetic assembly includes a third magnetic member and a fourth magnetic member arranged at intervals, and the arrangement direction of the third magnetic member and the fourth magnetic member is perpendicular to the thickness direction of the speaker, the polarities of the opposite ends of the third magnetic member and the fourth magnetic member are opposite, and a second sub-magnetic gap is formed between the third magnetic member and the fourth magnetic member.

[0014] In this embodiment, the structure of the magnetic circuit assembly is relatively simple, and the manufacturing cost of the speaker is relatively low.

[0015] In one possible implementation, the magnetic circuit assembly includes a first magnet, a second magnet, a first magnetic conductive member, a second magnetic conductive member, a third magnetic conductive member and a fourth magnetic conductive member; the first magnet and the second magnet are arranged at intervals, and the arrangement direction is perpendicular to the thickness direction of the speaker, and the polarization directions of the first magnet and the second magnet are opposite and both are parallel to the thickness direction of the speaker; the first magnetic conductive member is fixed to the side of the first magnet facing the first diaphragm, the second magnetic conductive member is fixed to the side of the second magnet facing the first diaphragm, and the first sub-magnetic gap is located between the first magnetic conductive member and the second magnetic conductive member; the third magnetic conductive member is fixed to the side of the first magnet facing the second diaphragm, the fourth magnetic conductive member is fixed to the side of the second magnet facing the second diaphragm, and the second sub-magnetic gap is located between the third magnetic conductive member and the fourth magnetic conductive member.

[0016] In this embodiment, the first and second magnetic conductive members can enhance the magnetic field strength of the first sub-magnetic gap. The first and second magnetic conductive members allow the first and second magnets to be smaller in size under conditions of equal magnetic field strength within the first sub-magnetic gap, facilitating miniaturization of the entire speaker. The third and fourth magnetic conductive members can enhance the magnetic field strength of the second sub-magnetic gap. The third and fourth magnetic conductive members allow the first and second magnets to be smaller in size under conditions of equal magnetic field strength within the second sub-magnetic gap, facilitating miniaturization of the entire speaker.

[0017] In one possible implementation, there are multiple voice coils, the arrangement direction of the multiple voice coils is parallel to the length direction of the speaker, the length direction of the speaker is perpendicular to the thickness direction of the speaker, and the multiple voice coils are at least partially located in the same magnetic gap; or, there are multiple magnetic gaps, the multiple magnetic gaps are arranged at intervals in the width direction of the speaker, the width direction of the speaker is perpendicular to the thickness direction of the speaker, there are multiple voice coils, the arrangement direction of the multiple voice coils is parallel to the width direction of the speaker, and the multiple voice coils correspond to different magnetic gap settings.

[0018] In this embodiment, multiple voice coils can be arranged to fully utilize the space along the length of the speaker, thereby reducing the space occupied along the width of the speaker. This facilitates miniaturization of the speaker in width, resulting in a narrow and long product form, making the speaker more suitable for elongated products such as electronic devices such as reading pens and selfie sticks. It is understood that in other embodiments, the speaker can be designed with an appropriate aspect ratio based on actual needs, and the layout of the multiple voice coils can be designed in conjunction with the aspect ratio of the speaker to improve the stability of the vibration component during vibration.

[0019] In one possible implementation, the magnetic gap includes a first sub-magnetic gap, a second sub-magnetic gap, a third sub-magnetic gap and a fourth sub-magnetic gap arranged at intervals, the arrangement direction of the first sub-magnetic gap and the second sub-magnetic gap is perpendicular to the thickness direction of the speaker, the magnetic field direction of the first sub-magnetic gap is opposite to the magnetic field direction of the second sub-magnetic gap, the arrangement direction of the third sub-magnetic gap and the fourth sub-magnetic gap is perpendicular to the thickness direction of the speaker, and the magnetic field direction of the third sub-magnetic gap is opposite to the magnetic field direction of the fourth sub-magnetic gap; the arrangement direction of the first sub-magnetic gap and the third sub-magnetic gap is parallel to the thickness direction of the speaker. In the thickness direction, the arrangement direction of the second sub-magnetic gap and the fourth sub-magnetic gap is parallel to the thickness direction of the speaker; the voice coil includes a first sub-voice coil and a second sub-voice coil, and the first sub-voice coil and the second sub-voice coil are arranged along the thickness direction of the speaker; the first sub-voice coil includes a first side portion and a second side portion that are oppositely arranged, the first side portion is at least partially located in the first sub-magnetic gap, and the second side portion is at least partially located in the second sub-magnetic gap; the second sub-voice coil includes a third side portion and a fourth side portion that are oppositely arranged, the third side portion is at least partially located in the third sub-magnetic gap, and the fourth side portion is at least partially located in the fourth sub-magnetic gap.

[0020] In this embodiment, multiple sub-voice coils can be arranged by making full use of the space in the thickness direction of the speaker, thereby reducing the space occupied in the thickness direction of the speaker, which is conducive to the miniaturization of the speaker in thickness. The speaker is more suitable for thin flat products, such as mobile phones, smart watches, tablet computers and other electronic devices.

[0021] In one possible implementation, the magnetic circuit assembly includes a first magnetic assembly and a second magnetic assembly, and the first magnetic assembly and the second magnetic assembly are arranged along the thickness direction of the speaker; the first magnetic assembly includes a first magnetic member and a second magnetic member arranged at intervals, and a third magnetic member and a fourth magnetic member arranged at intervals, and the arrangement direction of the first magnetic member, the second magnetic member, the third magnetic member and the fourth magnetic member is perpendicular to the thickness direction of the speaker, the polarities of the opposite ends of the first magnetic member and the second magnetic member are opposite, and a first sub-magnetic gap is formed between the first magnetic member and the second magnetic member, and the opposite ends of the third magnetic member and the fourth magnetic member are opposite. The polarities of the opposite ends of the fifth magnetic member and the sixth magnetic member are opposite, and a second sub-magnetic gap is formed between the third magnetic member and the fourth magnetic member; the second magnetic assembly includes the fifth magnetic member and the sixth magnetic member arranged at intervals, and the seventh magnetic member and the eighth magnetic member arranged at intervals, and the arrangement direction of the fifth magnetic member, the sixth magnetic member, the seventh magnetic member and the eighth magnetic member is perpendicular to the thickness direction of the speaker, the polarities of the opposite ends of the fifth magnetic member and the sixth magnetic member are opposite, and a third sub-magnetic gap is formed between the fifth magnetic member and the sixth magnetic member, the polarities of the opposite ends of the seventh magnetic member and the eighth magnetic member are opposite, and a fourth sub-magnetic gap is formed between the seventh magnetic member and the eighth magnetic member.

[0022] In this embodiment, the structure of the magnetic circuit assembly is relatively simple, and the manufacturing cost of the speaker is relatively low.

[0023] In one possible implementation, the magnetic circuit assembly includes a first magnet, a second magnet, a third magnet, a first magnetic conductive member, a second magnetic conductive member, a third magnetic conductive member, a fourth magnetic conductive member, a fifth magnetic conductive member and a sixth magnetic conductive member; the first magnet, the second magnet and the third magnet are arranged at intervals, and the arrangement direction is perpendicular to the thickness direction of the speaker, the polarization directions of the first magnet and the second magnet are opposite and both are parallel to the thickness direction of the speaker, and the polarization directions of the second magnet and the third magnet are opposite and both are parallel to the thickness direction of the speaker; the first magnetic conductive member is fixed to the side of the first magnet facing the first diaphragm, and the second magnetic conductive member is fixed to the side of the first magnet facing the first diaphragm. The first sub-magnetic gap is located between the first and second magnetic conductive members, and the second sub-magnetic gap is located between the second and third magnetic conductive members; the fourth magnetic conductive member is fixed to the side of the first magnet facing the second diaphragm, the fifth magnetic conductive member is fixed to the side of the second magnet facing the second diaphragm, and the sixth magnetic conductive member is fixed to the side of the third magnet facing the second diaphragm. The third sub-magnetic gap is located between the fourth and fifth magnetic conductive members, and the fourth sub-magnetic gap is located between the fifth and sixth magnetic conductive members.

[0024] In this embodiment, the first and second magnetic conductive members can enhance the magnetic field strength of the first sub-magnetic gap. The first and second magnetic conductive members enable the first and second magnets to be smaller in size under conditions of equal magnetic field strength in the first sub-magnetic gap, facilitating the miniaturization of the entire speaker. The second and third magnetic conductive members can enhance the magnetic field strength of the second sub-magnetic gap. The second and third magnetic conductive members enable the second and third magnets to be smaller in size under conditions of equal magnetic field strength in the second sub-magnetic gap, facilitating the miniaturization of the entire speaker. The fourth and fifth magnetic conductive members can enhance the magnetic field strength of the third sub-magnetic gap. The fourth and fifth magnetic conductive members enable the first and second magnets to be smaller in size under conditions of equal magnetic field strength in the third sub-magnetic gap, facilitating the miniaturization of the entire speaker. The fifth and sixth magnetic conductive members can enhance the magnetic field strength of the fourth sub-magnetic gap. The fifth and sixth magnetic conductive members enable the second and third magnets to be smaller in size under conditions of equal magnetic field strength in the fourth sub-magnetic gap, facilitating the miniaturization of the entire speaker.

[0025] In a possible implementation, the loudspeaker further includes a bracket, which is located between the first sub-voice coil and the second sub-voice coil and fixedly connects the first sub-voice coil and the second sub-voice coil.

[0026] In this embodiment, the bracket connects the first and second voice coils, allowing them to form a single unit. When energized, the first and second voice coils vibrate synchronously as a unit, thereby improving the vibration consistency and stability of the vibration assembly.

[0027] In one possible implementation, the speaker also includes a first connecting member, which includes a peripheral portion and a connecting portion. The connecting portion is located on the inner side of the peripheral portion and connects the peripheral portion. The peripheral portion connects the shell and the first diaphragm, and the connecting portion connects the first diaphragm and the voice coil.

[0028] In this embodiment, the voice coil can be connected to the first diaphragm and the second diaphragm via a first connector and a second connector, respectively. This improves the smoothness of the vibration of the vibration assembly. Furthermore, the first connector and the second connector are provided on either side of the voice coil to ensure the structural symmetry of the vibration assembly relative to the magnetic circuit assembly, thereby ensuring symmetry in the upper and lower vibration stiffness of the vibration assembly, which is beneficial for improving the vibration stability of the vibration assembly. Furthermore, the first connector can also be electrically conductive. The first connector is electrically connected to the voice coil, allowing the voice coil to be electrically connected to devices external to the speaker via the first connector.

[0029] In one possible implementation, the first and second diaphragms are symmetrically positioned relative to the magnetic circuit assembly, and the first and second adjustment members are symmetrically positioned relative to the magnetic circuit assembly. This ensures structural symmetry between the vibration assembly and the magnetic circuit assembly, resulting in symmetrical vertical vibration stiffness of the vibration assembly, which helps improve the vibration stability of the vibration assembly.

[0030] In one possible implementation, there are multiple magnetic gaps, and the magnetic gaps facing the first and / or second adjustment members may or may not have voice coils. This allows for more flexible positioning of the speaker components, which helps expand the speaker's applicability.

[0031] In a second aspect, a loudspeaker is provided, which includes a shell, a magnetic circuit assembly, a first diaphragm, a second diaphragm, a voice coil and an adjustment member; the shell has an inner cavity; the magnetic circuit assembly is located in the inner cavity and fixedly connected to the shell, the magnetic circuit assembly is provided with a first magnetic gap and a second magnetic gap arranged at intervals, and the arrangement direction of the first magnetic gap and the second magnetic gap is parallel to the thickness direction of the loudspeaker; the first diaphragm and the second diaphragm are respectively located on opposite sides of the magnetic circuit assembly, and the periphery of the first diaphragm and the periphery of the second diaphragm are both fixedly connected to the shell; the voice coil is located between the first diaphragm and the second diaphragm, the voice coil includes a first part and a second part arranged at intervals, the first part and the second part are arranged in the thickness direction of the loudspeaker, the first part is fixedly connected to the first diaphragm and at least partially located in the first magnetic gap, the second part is fixedly connected to the second diaphragm and at least partially located in the second magnetic gap; the adjustment member is located between the first part and the second part, and fixedly connected to the first part and the second part, the adjustment member is also located between the first magnetic gap and the second magnetic gap, and the adjustment member is a magnetic member.

[0032] The speaker provided in this application includes an adjusting member. The adjusting member is a magnetic member and is located between the first magnetic gap and the second magnetic gap. By setting the relative positions of the adjusting member and the first magnetic gap and the second magnetic gap, when the speaker is working, an interaction force is formed between the adjusting member and the first magnetic gap, and an interaction force is formed between the adjusting member and the second magnetic gap. Through the coordination of these two forces, the adjusting member can provide a negative stiffness coefficient for the speaker, thereby reducing the stiffness of the vibration component during vibration. In this way, it is beneficial to enhance the low-frequency radiation capability of the speaker and improve the low-frequency sensitivity of the speaker. That is, the low-frequency performance of the speaker is improved. It can be understood that the second diaphragm, the magnetic circuit assembly and the first diaphragm of the speaker are arranged in sequence in the thickness direction of the speaker. In some embodiments, the first diaphragm and the second diaphragm can be parallel to each other, and the first diaphragm and the second diaphragm are perpendicular to the thickness direction of the speaker.

[0033] In a possible implementation, a direction of the magnetic field of the first magnetic gap is opposite to a direction of the magnetic field of the second magnetic gap, and a winding plane of the voice coil is parallel to a thickness direction of the loudspeaker.

[0034] In this embodiment, when the voice coil is energized, current circulates through the first and second portions, with the current flowing in opposite directions. The magnetic field of the first magnetic gap is in opposite directions to the magnetic field of the second magnetic gap. This results in the Ampere force acting on the first and second portions in the same direction within the magnetic field. This allows the voice coil to move in the direction of the Ampere force, resulting in highly consistent movement and improved driving efficiency. It should be understood that the voice coil's winding plane is the same plane as the first and second portions. When the voice coil is energized, the current flows in the voice coil in a direction parallel to the winding plane.

[0035] In one possible implementation, the magnetic circuit assembly includes a first magnetic assembly and a second magnetic assembly, and the first magnetic assembly and the second magnetic assembly are arranged along the thickness direction of the speaker; the first magnetic assembly includes a first magnetic member and a second magnetic member arranged at intervals, and a third magnetic member and a fourth magnetic member arranged at intervals, and the arrangement direction of the first magnetic member, the second magnetic member, the third magnetic member and the fourth magnetic member is perpendicular to the thickness direction of the speaker, the polarities of the opposite ends of the first magnetic member and the second magnetic member are opposite, and a first sub-magnetic gap is formed between the first magnetic member and the second magnetic member, and the opposite ends of the third magnetic member and the fourth magnetic member are opposite. The third and fourth magnetic members have opposite polarities, forming a second sub-magnetic gap between them. The second magnetic assembly includes a fifth and sixth magnetic member, as well as a seventh and eighth magnetic member, arranged at intervals. The fifth, sixth, seventh, and eighth magnetic members are arranged perpendicular to the thickness of the speaker. The opposing ends of the fifth and sixth magnetic members have opposite polarities, forming a third sub-magnetic gap between them. The opposing ends of the seventh and eighth magnetic members have opposite polarities, forming a fourth sub-magnetic gap between them. Thus, the structure of the magnetic circuit assembly is relatively simple, and the speaker manufacturing cost is relatively low.

[0036] In one possible implementation, the magnetic circuit assembly includes a first magnet, a second magnet, a third magnet, a first magnetic conductive member, a second magnetic conductive member, a third magnetic conductive member, a fourth magnetic conductive member, a fifth magnetic conductive member and a sixth magnetic conductive member; the first magnet, the second magnet and the third magnet are arranged at intervals, and the arrangement direction is perpendicular to the thickness direction of the speaker, the polarization directions of the first magnet and the second magnet are opposite and both are parallel to the thickness direction of the speaker, and the polarization directions of the second magnet and the third magnet are opposite and both are parallel to the thickness direction of the speaker; the first magnetic conductive member is fixed to the side of the first magnet facing the first diaphragm, and the second magnetic conductive member is fixed to the side of the first magnet facing the first diaphragm. The first sub-magnetic gap is located between the first and second magnetic conductive members, and the second sub-magnetic gap is located between the second and third magnetic conductive members; the fourth magnetic conductive member is fixed to the side of the first magnet facing the second diaphragm, the fifth magnetic conductive member is fixed to the side of the second magnet facing the second diaphragm, and the sixth magnetic conductive member is fixed to the side of the third magnet facing the second diaphragm. The third sub-magnetic gap is located between the fourth and fifth magnetic conductive members, and the fourth sub-magnetic gap is located between the fifth and sixth magnetic conductive members.

[0037] In one possible implementation, there are multiple voice coils, the arrangement direction of the multiple voice coils is parallel to the length direction of the speaker, the length direction of the speaker is perpendicular to the thickness direction of the speaker, and the multiple voice coils are at least partially located in the same magnetic gap; or, there are multiple magnetic gaps, the multiple magnetic gaps are arranged at intervals in the width direction of the speaker, the width direction of the speaker is perpendicular to the thickness direction of the speaker, there are multiple voice coils, the arrangement direction of the multiple voice coils is parallel to the width direction of the speaker, and the multiple voice coils are at least partially located in the multiple magnetic gaps in a one-to-one correspondence.

[0038] In this embodiment, the design of multiple voice coils can be tailored to the actual length of the speaker, resulting in a more suitable aspect ratio for the design of multiple voice coils to form a vibrating assembly, thereby improving the stability of the vibrating assembly during vibration. Furthermore, the multiple voice coils can be arranged to fully utilize the space along the length of the speaker, thereby reducing the space occupied along the width of the speaker. This facilitates the miniaturization of the speaker width, making the speaker more suitable for elongated products such as electronic devices such as reading pens and selfie sticks.

[0039] In one possible implementation, the first magnetic gap includes a first sub-magnetic gap and a second sub-magnetic gap arranged at intervals, the arrangement direction of the first sub-magnetic gap and the second sub-magnetic gap is perpendicular to the thickness direction of the speaker, and the magnetic field direction of the first sub-magnetic gap is opposite to the magnetic field direction of the second sub-magnetic gap; the second magnetic gap includes a third sub-magnetic gap and a fourth sub-magnetic gap arranged at intervals, the arrangement direction of the third sub-magnetic gap and the fourth sub-magnetic gap is perpendicular to the thickness direction of the speaker, and the magnetic field direction of the third sub-magnetic gap is opposite to the magnetic field direction of the fourth sub-magnetic gap; the first sub-magnetic gap and the third sub-magnetic gap are opposite to each other. The first sub-voice coil and the second sub-voice coil are arranged at intervals, and the arrangement direction is parallel to the thickness direction of the speaker; the second sub-magnetic gap and the fourth sub-magnetic gap are arranged at intervals, and the arrangement direction is parallel to the thickness direction of the speaker; the first part is the first sub-voice coil, and the second part is the second sub-voice coil, the first sub-voice coil includes a first side portion and a second side portion relative to each other, the first side portion is at least partially located in the first sub-magnetic gap, and the second side portion is at least partially located in the second sub-magnetic gap; the second sub-voice coil includes a third side portion and a fourth side portion relative to each other, the third side portion is at least partially located in the third sub-magnetic gap, and the fourth side portion is at least partially located in the fourth sub-magnetic gap.

[0040] In this embodiment, multiple sub-voice coils can be arranged by making full use of the space in the thickness direction of the speaker, thereby reducing the space occupied in the thickness direction of the speaker, which is conducive to the miniaturization of the speaker in thickness. The speaker is more suitable for thin flat products, such as mobile phones, smart watches, tablet computers and other electronic devices.

[0041] In one possible implementation, the magnetic circuit assembly includes a first magnetic assembly and a second magnetic assembly, and the first magnetic assembly and the second magnetic assembly are arranged along the thickness direction of the speaker; the first magnetic assembly includes a first magnetic member and a second magnetic member arranged at intervals, and a third magnetic member and a fourth magnetic member arranged at intervals, and the arrangement direction of the first magnetic member, the second magnetic member, the third magnetic member and the fourth magnetic member is perpendicular to the thickness direction of the speaker, the polarities of the opposite ends of the first magnetic member and the second magnetic member are opposite, and a first sub-magnetic gap is formed between the first magnetic member and the second magnetic member, and the opposite ends of the third magnetic member and the fourth magnetic member are opposite. The third and fourth magnetic members have opposite polarities, forming a second sub-magnetic gap between them. The second magnetic assembly includes a fifth and sixth magnetic member, as well as a seventh and eighth magnetic member, arranged at intervals. The fifth, sixth, seventh, and eighth magnetic members are arranged perpendicular to the thickness of the speaker. The opposing ends of the fifth and sixth magnetic members have opposite polarities, forming a third sub-magnetic gap between them. The opposing ends of the seventh and eighth magnetic members have opposite polarities, forming a fourth sub-magnetic gap between them. Thus, the structure of the magnetic circuit assembly is relatively simple, and the speaker manufacturing cost is relatively low.

[0042] In one possible implementation, the magnetic circuit assembly includes a first magnet, a second magnet, a third magnet, a first magnetic conductive member, a second magnetic conductive member, a third magnetic conductive member, a fourth magnetic conductive member, a fifth magnetic conductive member and a sixth magnetic conductive member; the first magnet, the second magnet and the third magnet are arranged at intervals, and the arrangement direction is perpendicular to the thickness direction of the speaker, the polarization directions of the first magnet and the second magnet are opposite and both are parallel to the thickness direction of the speaker, and the polarization directions of the second magnet and the third magnet are opposite and both are parallel to the thickness direction of the speaker; the first magnetic conductive member is fixed to the side of the first magnet facing the first diaphragm, and the second magnetic conductive member is fixed to the side of the first magnet facing the first diaphragm. The first sub-magnetic gap is located between the first and second magnetic conductive members, and the second sub-magnetic gap is located between the second and third magnetic conductive members; the fourth magnetic conductive member is fixed to the side of the first magnet facing the second diaphragm, the fifth magnetic conductive member is fixed to the side of the second magnet facing the second diaphragm, and the sixth magnetic conductive member is fixed to the side of the third magnet facing the second diaphragm. The third sub-magnetic gap is located between the fourth and fifth magnetic conductive members, and the fourth sub-magnetic gap is located between the fifth and sixth magnetic conductive members.

[0043] In this embodiment, the first and second magnetic conductive members can enhance the magnetic field strength of the first sub-magnetic gap. The first and second magnetic conductive members enable the first and second magnets to be smaller in size under conditions of equal magnetic field strength in the first sub-magnetic gap, facilitating the miniaturization of the entire speaker. The second and third magnetic conductive members can enhance the magnetic field strength of the second sub-magnetic gap. The second and third magnetic conductive members enable the second and third magnets to be smaller in size under conditions of equal magnetic field strength in the second sub-magnetic gap, facilitating the miniaturization of the entire speaker. The fourth and fifth magnetic conductive members can enhance the magnetic field strength of the third sub-magnetic gap. The fourth and fifth magnetic conductive members enable the first and second magnets to be smaller in size under conditions of equal magnetic field strength in the third sub-magnetic gap, facilitating the miniaturization of the entire speaker. The fifth and sixth magnetic conductive members can enhance the magnetic field strength of the fourth sub-magnetic gap. The fifth and sixth magnetic conductive members enable the second and third magnets to be smaller in size under conditions of equal magnetic field strength in the fourth sub-magnetic gap, facilitating the miniaturization of the entire speaker.

[0044] In a third aspect, an electronic device is provided, comprising a housing and the above-mentioned speaker, wherein the speaker is accommodated inside the housing. The electronic device having the above-mentioned speaker has better low-frequency radiation capability. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0046] Figure 1This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0047] Figure 2 yes Figure 1 The structure diagram of the temples shown in some embodiments;

[0048] Figure 3 is a schematic structural diagram of the speaker provided in this application in some embodiments;

[0049] Figure 4 yes Figure 3 A schematic diagram of a partial structural breakdown of the loudspeaker shown;

[0050] Figure 5 yes Figure 3 The schematic diagram of the cross-sectional structure of the loudspeaker in the AA direction is shown;

[0051] Figure 6 yes Figure 3 The schematic diagram of the cross-sectional structure of the loudspeaker in the BB direction is shown;

[0052] Figure 7 yes Figure 3 A partial structural cross-sectional view of the loudspeaker in one state along the AA direction is shown;

[0053] Figure 8 yes Figure 3 A partial structural cross-sectional view of the loudspeaker in another state along the AA direction is shown;

[0054] Figure 9 yes Figure 3 A partial structural cross-sectional view of the loudspeaker in another state along the AA direction is shown;

[0055] Figure 10A yes Figure 3 A schematic cross-sectional view of another embodiment of a loudspeaker in the AA direction is shown;

[0056] Figure 10B yes Figure 3 A schematic cross-sectional structure diagram of another embodiment of a loudspeaker in the BB direction is shown;

[0057] Figure 11 yes Figure 3 A schematic cross-sectional view of another embodiment of a loudspeaker in the AA direction is shown;

[0058] Figure 12 yes Figure 3 A schematic structural diagram of another embodiment of a loudspeaker is shown;

[0059] Figure 13 yes Figure 12A schematic diagram of a partial structural breakdown of the loudspeaker shown;

[0060] Figure 14 yes Figure 13 A schematic structural diagram of an embodiment of a magnetic circuit assembly is shown;

[0061] Figure 15 yes Figure 12 The schematic diagram of the cross-sectional structure of the loudspeaker in the CC direction is shown;

[0062] Figure 16 yes Figure 12 The schematic cross-sectional structure diagram of the loudspeaker in the DD direction is shown;

[0063] Figure 17 yes Figure 12 A partial structural cross-sectional view of a loudspeaker in one state in the CC direction is shown;

[0064] Figure 18 yes Figure 12 A partial structural cross-sectional view of the loudspeaker in another state in the CC direction is shown;

[0065] Figure 19 yes Figure 12 A schematic cross-sectional structure diagram of another embodiment of a loudspeaker in the CC direction is shown;

[0066] Figure 20 yes Figure 12 A schematic cross-sectional structure diagram of another embodiment of a loudspeaker in the CC direction is shown;

[0067] Figure 21 yes Figure 12 A schematic cross-sectional structure diagram of another embodiment of a loudspeaker in the CC direction is shown;

[0068] Figure 22 yes Figure 3 A schematic structural diagram of another embodiment of a loudspeaker is shown;

[0069] Figure 23 yes Figure 22 A schematic diagram of a partial structural breakdown of the loudspeaker shown;

[0070] Figure 24 yes Figure 22 The schematic diagram of the cross-sectional structure of the loudspeaker in the EE direction is shown;

[0071] Figure 25 yes Figure 22 The schematic diagram of the cross-sectional structure of the loudspeaker in the FF direction is shown;

[0072] Figure 26 yes Figure 22A partial structural cross-sectional view of a loudspeaker in the EE direction in one state is shown;

[0073] Figure 27 yes Figure 22 A partial structural cross-sectional view of the loudspeaker in another state in the EE direction is shown;

[0074] Figure 28 yes Figure 22 A schematic cross-sectional view of another embodiment of a loudspeaker in the EE direction is shown;

[0075] Figure 29 It is the frequency response curve of the loudspeaker under the same working power in different implementation schemes;

[0076] Figure 30 yes Figure 22 A schematic cross-sectional view of another embodiment of a loudspeaker in the EE direction is shown;

[0077] Figure 31 yes Figure 22 The cross-sectional structure diagram of another embodiment of the loudspeaker in the EE direction is shown. DETAILED DESCRIPTION

[0078] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0079] In the description of the embodiments of the present application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted" and "connected" should be understood broadly. For example, "connected" can be detachably or non-detachably connected; it can be directly connected or indirectly connected through an intermediate medium. "Fixed connection" refers to a connection in which the relative positional relationship remains unchanged after connection. "Rotational connection" refers to a connection in which the connection allows relative rotation. The directional terms mentioned in the embodiments of the present application, such as "upper," "lower," "top," "bottom," "inner," and "outer," are merely references to the directions in the accompanying drawings. Therefore, the directional terms used are intended to better and more clearly illustrate and understand the embodiments of the present application, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the embodiments of the present application. In the embodiments of the present application, the terms "first," "second," "third," "fourth," "fifth," "sixth," "seventh," and "eighth," etc., are used for descriptive purposes only and should not be construed to indicate or imply relative importance or to implicitly indicate the number of the technical features indicated. Therefore, features defined as "first," "second," "third," "fourth," "fifth," "sixth," "seventh," and "eighth" may explicitly or implicitly include one or more of these features. In the embodiments of the present application, "and / or" is simply a description of an association relationship between associated objects, indicating that three relationships can exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship. References to "some embodiments" and the like in this specification mean that one or more embodiments of the present application include the specific features, structures, or characteristics described in conjunction with these embodiments. Therefore, phrases such as "in some embodiments" and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically stated. The terms "including," "having," and their variations all mean "including but not limited to," unless otherwise specifically stated. It should be understood that the specific embodiments described herein are merely illustrative of the relevant embodiments and are not intended to limit such embodiments. It should also be noted that for ease of description, only portions relevant to the embodiments are shown in the drawings. In the embodiments of this application, the terms "parallel" and "perpendicular" are defined based on current technological standards, rather than being strictly mathematically defined. A small amount of deviation is permitted, and both approximately parallel and approximately perpendicular are acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0° and 10°.For example, A and B are perpendicular, which means A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80° and 100°. The term "plurality" means at least two.

[0080] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0081] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0082] See also Figure 1 , Figure 1 1 is a schematic structural diagram of an electronic device 1000 provided in an embodiment of the present application.

[0083] In some embodiments, the electronic device 1000 may be an augmented reality (AR) glasses, an AR helmet, or a virtual reality (VR) glasses, a reading pen, a selfie stick, a wristband, a mobile phone, a smartwatch, a tablet computer, or other electronic device 1000 that requires a speaker to output audio. This application specifically describes the electronic device 1000 as AR glasses.

[0084] In this embodiment, the electronic device 1000 includes a frame 10, a display device 20, a speaker 30, and a circuit board 40. The display device 20, the speaker 30, and the circuit board 40 are all mounted on the frame 10. The display device 20 and the speaker 30 are both electrically connected to the circuit board 40, which is used to control the display of the display device 20 and the sound of the speaker 30.

[0085] Illustratively, the frame 10 includes a frame 11 and temples 12 connected to the frame 11. There are two temples 12, each connected to opposite ends of the frame 11. It should be noted that in other embodiments, the frame 10 may also include a frame 11 and a fixing strap connected to the frame 11, and this application is not specifically limited thereto.

[0086] The frame 11 may include two frames 111 and a crossbeam 112 connected between the two frames 111. Both frames 111 are provided with a receiving cavity for receiving the electronic components of the electronic device 1000. The crossbeam 112 is integrally formed with the two frames 111 to simplify the molding process of the frame 11 and increase the overall strength of the frame 11. The material of the frame 11 includes but is not limited to metal, plastic, resin or natural materials. It should be understood that the frame 11 is not limited to Figure 1 The full-rimmed frames shown may also be half-rimmed or rimless.

[0087] In this embodiment, there are two display devices 20, and the two display devices 20 have the same structure. Specifically, the two display devices 20 are respectively mounted on the two frames 111 of the frame 11. When the electronic device 1000 is worn on the user's head, one display device 20 corresponds to the user's left eye, and the other display device 20 corresponds to the user's right eye. In this case, the user can view virtual scenes or real scenes through the two display devices 20. It should be noted that in other embodiments, the structures of the two display devices 20 can also be different, or the number of display devices 20 can also be one or more, and this application does not specifically limit this.

[0088] In this embodiment, the display device 20 is mounted in the frame 111 and electrically connected to the circuit board 40. In this embodiment, the circuit board 40 can be mounted inside the temple 12. There can be two circuit boards 40, one located in each temple 12 and electrically connected to its corresponding display device 20. Of course, in other embodiments, there can be only one circuit board 40, located in one of the temples 12.

[0089] Of course, in an implementation scenario of other embodiments, the circuit board 40 may also be installed in the frame 111 , or in the accommodating cavity of the frame 111 .

[0090] The two temples 12 are rotatably connected to the opposite ends of the frame 11. Specifically, the two temples 12 are rotatably connected to the two frames 111 of the frame 11. Figure 1 When the electronic device 1000 is in the folded state, the two temples 12 rotate relative to the frame 11 until they are opposite to each other. At this time, the two temples 12 of the electronic device 1000 can be placed on the user's ears, and the crossbar 112 can be placed on the user's nose bridge, so that the electronic device 1000 is worn on the user's head. When the electronic device 1000 is in the folded state, the two temples 12 rotate relative to the frame 11 until they at least partially overlap each other and are accommodated inside the frame 11. At this time, the electronic device 1000 can be stored.

[0091] In the embodiments of this application, the terms "inside" and "outside" used in referring to electronic device 1000 are primarily used to describe the orientation of electronic device 1000 when worn on the user's head. When worn by a user, the orientation closer to the user's head is considered inside, while the orientation farther from the user's head is considered outside. These terms do not limit the orientation of electronic device 1000 in other scenarios.

[0092] In other embodiments, the two temples 12 may be fixedly connected to the two frames 111 respectively, or the two temples 12 may be integrally formed with the frame 11, that is, the electronic device 1000 is always in an unfolded state, which is not specifically limited in this application.

[0093] It is understandable that the two temples 12 in this embodiment have the same structure, and the structure of the temple 12 will be described below using one of the temples 12 as an example. Of course, in other embodiments, the structures of the two temples 12 may also be different.

[0094] Please refer to Figure 1 and Figure 2 , Figure 2 yes Figure 1 The structure of the temple 12 shown in some embodiments is schematic.

[0095] In some embodiments, the temple 12 may include a connecting section 121, an intermediate section 122, and an ear-hanging section 123. The connecting section 121, the intermediate section 122, and the ear-hanging section 123 are connected in sequence. The side of the connecting section 121 away from the intermediate section 122 can be rotatably connected to the corresponding frame 111, and the ear-hanging section 123 is used to wear the temple 12 above the user's ear. The intermediate section 122 is provided with a receiving cavity and a sound hole 1223 connected to the receiving cavity. The speaker 30 is installed in the receiving cavity. The sound emitted by the speaker 30 can be transmitted to the outside of the receiving cavity through the sound hole 1223 and received by the user's ear. That is, the temple 12 is equivalent to the shell of the electronic device 1000 for accommodating the speaker 30.

[0096] In this embodiment, the middle section 122 can be relatively convex downward, with the convex portion close to the user's external auditory canal, so that the sound hole 1223 can be closer to the user's ear. The sound emitted by the speaker 30 is transmitted through the sound hole 1223 and directly enters the user's external auditory canal, so that the user can quickly hear the sound emitted by the speaker 30. Of course, in other embodiments, the middle section 122 may not be convex downward.

[0097] In this embodiment, there are two sound holes 1223. These two sound holes 1223 are located on opposite sides of the middle section 122, and the sound is emitted in opposite directions. One of the sound holes 1223 is located on the side of the middle section 122 closer to the user's ear, which facilitates the sound output from the speaker 30 to the user's ear and enhances the audiovisual experience of the electronic device 1000. In other embodiments, the sound emission directions of the two sound holes 1223 may also be at an angle.

[0098] In this embodiment, there are two speakers 30, each located within a corresponding housing cavity of the temple 12. Specifically, when the user wears the electronic device 1000, the housing cavity can be located above and in front of the user's ear. When the speakers 30 emit sound, the user can hear the sound more clearly and intuitively. Of course, in other embodiments, the speakers 30 can also be located in other locations, such as the connecting section 121, the ear hook section 123, or other locations on the frame 111.

[0099] When the user wears AR glasses, the virtual reality image can be transmitted to the user's eyes through the display device 20, and the sound emitted by the speaker 30 can be output to the outside of the electronic device 1000 through the sound hole and heard by the user, thereby realizing the audio-visual function of the electronic device 1000.

[0100] It is understandable that, in this embodiment, the structures of the speakers 30 provided on the two temples 12 are identical. Of course, in other embodiments, the structures of the speakers 30 provided on the two temples 12 may also be different.

[0101] The circuit board 40 integrates a processor, memory, and other various circuit components. The display device 20 and the speaker are coupled to the processor. The processor may include one or more processing units, for example: the processor may include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU). Among them, different processing units can be independent devices or integrated into one or more processors.

[0102] The processor can generate operation control signals based on instruction opcodes and timing signals to complete the control of instruction extraction and execution.

[0103] The processor may also include internal memory for storing instructions and data. In some embodiments, the memory in the processor may be a cache memory. This memory can store instructions or data that have been used by the processor or that are frequently used. When the processor needs to use the instruction or data, it can directly access it from the memory. This avoids duplicate accesses, reduces processor latency, and thus improves system efficiency.

[0104] In some embodiments, the processor may include one or more interfaces. The interface may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a universal serial bus (USB) interface. The processor may be connected to modules such as a touch sensor, a wireless communication module, a display, and a camera through at least one of the above interfaces.

[0105] The memory can be used to store computer executable program code, which includes instructions. The memory may include a program storage area and a data storage area. The program storage area may store an operating system, an application required for at least one function (such as a photo taking function, a video recording function, etc.), etc. The data storage area may store data created during the use of the electronic device 1000 (such as image data, video data, etc.), etc. In addition, the memory may include a high-speed random access memory and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc.

[0106] The processor executes various functional methods or data processing of the electronic device 1000 by running instructions stored in the memory and / or instructions stored in the memory set in the processor, for example, causing the display device 20 to present a virtual reality image, causing the speaker 30 to emit sound, etc.

[0107] In this embodiment, the speaker 30 installed in the receiving cavity of the middle section 122 has various embodiments. Some embodiments of the speaker 30 are described in detail below.

[0108] Please refer to Figure 3 、 Figure 4 and Figure 5 , Figure 3 3 is a schematic structural diagram of the speaker 30 provided in this application in some embodiments. Figure 4 yes Figure 3 The schematic diagram of the partial structural decomposition of the speaker 30 is shown. Figure 5 yes Figure 3 The cross-sectional structure diagram of the loudspeaker 30 shown in the figure is in the AA direction. Figure 3 The width direction of the speaker 30 is the X-axis direction, the length direction of the speaker 30 is the Y-axis direction, and the thickness direction of the speaker 30 is the Z-axis direction. The X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other.

[0109] In some embodiments, the speaker 30 may include a housing 31, a magnetic circuit assembly 32, a first diaphragm 331, a second diaphragm 332, a voice coil 34, a first adjustment member 351, and a second adjustment member 352. The housing 31 has an inner cavity 311, and the magnetic circuit assembly 32 is located in the inner cavity 311. The magnetic circuit assembly 32 has a magnetic gap 320.

[0110] The first diaphragm 331 and the second diaphragm 332 are respectively located on opposite sides of the magnetic circuit assembly 32. The periphery of the first diaphragm 331 and the periphery of the second diaphragm 332 are both fixedly connected to the housing 31. The second diaphragm 332, the magnetic circuit assembly 32, and the first diaphragm 331 are arranged in sequence in the thickness direction (i.e., the Z-axis direction) of the speaker 30. For example, the first diaphragm 331 and the second diaphragm 332 can be parallel to each other, and the first diaphragm 331 and the second diaphragm 332 are perpendicular to the thickness direction of the speaker 30.

[0111] The voice coil 34 is located between the first diaphragm 331 and the second diaphragm 332 and is fixedly connected to the first diaphragm 331 and the second diaphragm 332. The voice coil 34 is at least partially located within the magnetic gap 320. It is understood that the voice coil 34 can be partially located within the magnetic gap 320, or the voice coil 34 can be located entirely within the magnetic gap 320.

[0112] In this embodiment, the first adjustment member 351 and the second adjustment member 352 are located within the inner cavity 311, and are located on opposite sides of the magnetic circuit assembly 32. In the thickness direction of the speaker 30, both the first adjustment member 351 and the second adjustment member 352 at least partially face the magnetic gap 320. It will be appreciated that, in the thickness direction of the speaker 30, a partial or full projection of the first adjustment member 351 overlaps with a projection of the magnetic gap 320. A partial or full projection of the second adjustment member 352 overlaps with a projection of the magnetic gap 320.

[0113] In the embodiment of the present application, the number of magnetic gaps 320 can be one or more. When the number of magnetic gaps 320 is one, the magnetic gap 320 directly facing the first adjustment member 351 and the second adjustment member 352 is arranged with a voice coil 34. When the number of magnetic gaps 320 is multiple, the magnetic gap 320 directly facing the first adjustment member 351 and / or the second adjustment member 352 can be arranged with a voice coil 34, or can also not be arranged with a voice coil 34 (that is, the voice coil 34 and the first adjustment member 351 and / or the second adjustment member 352 can correspond to the same magnetic gap 320 or different magnetic gaps 320). In this case, the position setting of the various components of the speaker 30 is more flexible, which is conducive to increasing the applicability of the speaker 30.

[0114] In some embodiments, the first adjusting member 351 and the second adjusting member 352 are both magnetic members. For example, the first adjusting member 351 and the second adjusting member 352 can be magnets, soft iron, etc. The first adjusting member 351 and the second adjusting member 352 are affected by the magnetic field of the magnetic gap 320.

[0115] Exemplarily, the first adjusting member 351 and / or the second adjusting member 352 may be soft iron. Soft iron is easily magnetized by a magnetic field and demagnetized after the external magnetic field is removed. The cost of soft iron is relatively low, which helps to reduce the production cost of the speaker 30. Among them, the soft iron may be pure iron or an alloy with a very high iron content. For example, the first adjusting member 351 and / or the second adjusting member 352 may be steel with a low carbon content, such as "general cold-rolled carbon steel sheet and strip" (Steel Plate Cold Common, SPCC). In some other embodiments, the first adjusting member 351 and / or the second adjusting member 352 may also be an iron-silicon alloy, a nickel-iron alloy, etc.

[0116] In some other embodiments, the first adjusting member 351 and / or the second adjusting member 352 may also be made of magnetic materials such as aluminum nickel cobalt alloy, iron chromium cobalt alloy, ferrite, neodymium iron boron, etc.

[0117] Please refer to Figure 5 and Figure 6 , Figure 6 yes Figure 3 The schematic cross-sectional structure diagram of the loudspeaker 30 is shown in the BB direction.

[0118] In some embodiments, the voice coil 34 has a hollow structure. The voice coil 34 may include a first side portion 341 and a second side portion 342 that are spaced apart from each other. In the embodiment of the present application, the first side portion 341 and the second side portion 342 of the voice coil 34 are located in the winding plane of the voice coil 34. For example, the winding plane of the voice coil 34 may be parallel to the thickness of the speaker 30. The first side portion 341 is fixedly connected to the first diaphragm 331 and is at least partially located in the magnetic gap 320. The second side portion 342 is fixedly connected to the second diaphragm 332 and is at least partially located in the magnetic gap 320. It is understood that the first side portion 341 may be partially or entirely located within the magnetic gap 320. The second side portion 342 is fixedly connected to the second diaphragm 332 and is at least partially located in the magnetic gap 320. It is understood that the second side portion 342 may be partially or entirely located within the magnetic gap 320.

[0119] In this embodiment, the first adjustment member 351 is located between the first diaphragm 331 and the voice coil 34, and is fixedly connected to the first diaphragm 331 and the voice coil 34. For example, the first adjustment member 351 may be located between the first side portion 341 of the voice coil 34 and the first diaphragm 331, and is fixedly connected to the first side portion 341 of the voice coil 34 and the first diaphragm 331. The second adjustment member 352 is located between the second diaphragm 332 and the voice coil 34, and is fixedly connected to the second diaphragm 332 and the voice coil 34. For example, the second adjustment member 352 may be located between the second side portion 342 of the voice coil 34 and the second diaphragm 332, and is fixedly connected to the second side portion 342 of the voice coil 34 and the second diaphragm 332. The voice coil 34, the first diaphragm 331, the second diaphragm 332, the first adjustment member 351, and the second adjustment member 352 may collectively form a vibration assembly that vibrates in the same direction.

[0120] In the embodiment of the present application, the position design of the first adjusting member 351 allows the first adjusting member 351 to better face the magnetic gap 320 of the magnetic circuit assembly 32. The area of ​​the first adjusting member 351 facing the magnetic gap 320 is larger, and the first adjusting member 351 is more sensitive to the change and magnitude of the force acting through the magnetic gap 320 when the first adjusting member 351 changes position, which is beneficial to improving the efficiency of the negative stiffness system of the speaker 30. The position design of the second adjusting member 352 allows the second adjusting member 352 to better face the magnetic gap 320 of the magnetic circuit assembly 32. The area of ​​the second adjusting member 352 facing the magnetic gap 320 is larger, and the second adjusting member 352 is more sensitive to the change and magnitude of the force acting through the magnetic gap 320 when the second adjusting member 352 changes position, which is beneficial to improving the efficiency of the negative stiffness system of the speaker 30.

[0121] In other embodiments, the first adjusting member 351 is fixedly connected to the first diaphragm 331 and is located on a side of the first diaphragm 331 facing away from the voice coil 34, or the first adjusting member 351 is fixedly connected to the voice coil 34 and is located on a side of the voice coil 34. The second adjusting member 352 is fixedly connected to the second diaphragm 332 and is located on a side of the second diaphragm 332 facing away from the voice coil 34, or the second adjusting member 352 is fixedly connected to the voice coil 34 and is located on a side of the voice coil 34.

[0122] In this embodiment, the first diaphragm 331 and the second diaphragm 332 are symmetrically arranged relative to the magnetic circuit assembly 32. It is understandable that the first diaphragm 331 and the second diaphragm 332 are symmetrically arranged relative to the center of the magnetic circuit assembly 32. At this time, the thickness direction of the speaker 30 is perpendicular to the direction of the first diaphragm 331 and the second diaphragm 332. In this way, the structural symmetry of the vibration assembly relative to the magnetic circuit assembly 32 is ensured, so that the upper and lower vibration stiffness of the vibration assembly are symmetrical, which is beneficial to improving the vibration stability of the vibration assembly. The first adjustment member 351 and the second adjustment member 352 are symmetrically arranged relative to the magnetic circuit assembly 32. It is understandable that the first adjustment member 351 and the second adjustment member 352 are symmetrically arranged relative to the center of the magnetic circuit assembly 32. In this way, the structural symmetry of the vibration assembly relative to the magnetic circuit assembly 32 is ensured, so that the upper and lower vibration stiffness of the vibration assembly are symmetrical, which is beneficial to improving the vibration stability of the vibration assembly.

[0123] See also Figure 4 and Figure 5 In some embodiments, the magnetic circuit assembly 32 may include a first magnetic assembly 321 and a second magnetic assembly 322. The first magnetic assembly 321 and the second magnetic assembly 322 are spaced apart along the thickness direction of the speaker 30. For example, the first magnetic assembly 321 and the second magnetic assembly 322 may be arranged opposite each other. The first magnetic assembly 321 may include a first magnetic member 3211 and a second magnetic member 3212 spaced apart from each other. The first magnetic member 3211 and the second magnetic member 3212 are arranged perpendicular to the thickness direction of the speaker 30. For example, the first magnetic member 3211 and the second magnetic member 3212 may be arranged opposite each other along the width direction of the speaker 30. The polarities of the opposing ends of the first magnetic member 3211 and the second magnetic member 3212 are opposite, forming a magnetic field loop between the first magnetic member 3211 and the second magnetic member 3212. In other words, a first sub-magnetic gap 3201 is formed between the first magnetic member 3211 and the second magnetic member 3212. In other embodiments, the first magnetic member 3211 and the second magnetic member 3212 may also be arranged opposite to each other along the length direction of the speaker 30 .

[0124] Exemplarily, the second magnetic assembly 322 may include a third magnetic member 3221 and a fourth magnetic member 3222 arranged at intervals. The arrangement direction of the third magnetic member 3221 and the fourth magnetic member 3222 is perpendicular to the thickness direction of the speaker 30. Exemplarily, the third magnetic member 3221 and the fourth magnetic member 3222 may be arranged relative to each other along the width direction of the speaker 30. The polarities of the opposite ends of the third magnetic member 3221 and the fourth magnetic member 3222 are opposite, and a magnetic field loop is formed between the third magnetic member 3221 and the fourth magnetic member 3222. That is, a second sub-magnetic gap 3202 is formed between the third magnetic member 3221 and the fourth magnetic member 3222. In other embodiments, the third magnetic member 3221 and the fourth magnetic member 3222 may be arranged relative to each other along the length direction of the speaker 30. The structure of the magnetic circuit assembly 32 in this embodiment is relatively simple, and the manufacturing cost of the speaker 30 is relatively low.

[0125] In this embodiment, the first sub-magnetic gap 3201 and the second sub-magnetic gap 3202 together constitute the magnetic gap 320 of the magnetic circuit assembly 32. The first sub-magnetic gap 3201 and the second sub-magnetic gap 3202 are arranged in the thickness direction of the speaker 30. The first side portion 341 of the voice coil 34 is at least partially located in the first sub-magnetic gap 3201. It is understood that the first side portion 341 can be located entirely or partially in the first sub-magnetic gap 3201. In this case, the first adjustment member 351 is located on the side of the first sub-magnetic gap 3201 close to the first diaphragm 331. The second side portion 342 of the voice coil 34 is at least partially located in the first sub-magnetic gap 3201. It is understood that the second side portion 342 can be located entirely or partially in the second sub-magnetic gap 3202. In this case, the second adjustment member 352 is located on the side of the second sub-magnetic gap 3202 close to the second diaphragm 332.

[0126] See also Figure 7 , Figure 7 yes Figure 3 The speaker 30 is a partial structural cross-sectional view in the AA direction in a state shown. Figure 7 The voice coil 34 of the loudspeaker 30 is shown unpowered, with the vibrating assembly in an equilibrium position.

[0127] In this embodiment, the first adjusting member 351 is affected by the magnetic field of the first sub-magnetic gap 3201. At this time, the first sub-magnetic gap 3201 generates a static magnetostatic force F on the first adjusting member 351. S1 .Magnetostatic force F S1 The direction of the magnetostatic force F is from the first diaphragm 331 to the second diaphragm 332, and when the first adjustment member 351 is close to the magnetic circuit assembly 32, the magnetostatic force F S1 When the first adjusting member 351 is away from the magnetic circuit assembly 32, the static magnetostatic force F S1The second adjusting member 352 will be affected by the magnetic field of the second sub-magnetic gap 3202. At this time, the second sub-magnetic gap 3202 generates a static magnetic force F on the second adjusting member 352. S2 .Magnetostatic force F S2 The direction of the magnetostatic force F is from the second diaphragm 332 to the first diaphragm 331, and when the second adjusting member 352 is close to the magnetic circuit assembly 32, the magnetostatic force F S2 When the second adjusting member 352 is away from the magnetic circuit assembly 32, the static magnetostatic force F S2 The size is reduced.

[0128] In this embodiment, the first adjusting member 351 is subjected to a static magnetic force F S1 The direction of the second adjusting member 352 is related to the static magnetic force F S2 The direction is opposite to that of the first adjusting member 351, and when the voice coil 34 is not energized, the static magnetostrictive force F S1 The magnitude of the static magnetic force F on the second adjusting member 352 S2 are equal in size. At this time, F S1 and F S2 They can cancel each other out, and the vibration component is in a balanced position, that is, the voice coil 34, the first diaphragm 331, the second diaphragm 332, the first adjustment member 351 and the second adjustment member 352 are respectively in their respective balanced positions.

[0129] See also Figure 7 and Figure 8 , Figure 8 yes Figure 3 Another state of the speaker 30 is a partial structural cross-sectional view in the AA direction. Figure 8 The voice coil 34 of the loudspeaker 30 is energized, and the movement direction of the voice coil 34 is from the first diaphragm 331 to the second diaphragm 332 .

[0130] In this embodiment, the direction of the magnetic field in the first sub-magnetic gap 3201 is opposite to the direction of the magnetic field in the second sub-magnetic gap 3202. It is understood that when the north pole (north pole) of one magnetic component faces the south pole (south pole) of another magnetic component, the direction of the magnetic field in the magnetic gap 320 formed by the two magnetic components points from the north pole of one magnetic component to the south pole of the other magnetic component.

[0131] Exemplarily, the north pole of the first magnetic member 3211 is disposed opposite the south pole of the second magnetic member 3212, and the magnetic direction of the first sub-magnetic gap 3201 formed between the first magnetic member 3211 and the second magnetic member 3212 is from the north pole of the first magnetic member 3211 to the south pole of the second magnetic member 3212. The south pole of the third magnetic member 3221 is disposed opposite the north pole of the fourth magnetic member 3222, and the magnetic direction of the second sub-magnetic gap 3202 formed between the third magnetic member 3221 and the fourth magnetic member 3222 is from the north pole of the fourth magnetic member 3222 to the south pole of the third magnetic member 3221.

[0132] Of course, in other embodiments, the south pole of the first magnetic member 3211 may be disposed opposite the north pole of the second magnetic member 3212, and the magnetic direction of the second sub-magnetic gap 3202 formed between the third magnetic member 3221 and the fourth magnetic member 3222 is directed from the north pole of the second magnetic member 3212 to the south pole of the first magnetic member 3211. The north pole of the third magnetic member 3221 may be disposed opposite the south pole of the fourth magnetic member 3222, and the magnetic direction of the first sub-magnetic gap 3201 formed between the first magnetic member 3211 and the second magnetic member 3212 is directed from the north pole of the third magnetic member 3221 to the south pole of the fourth magnetic member 3222.

[0133] In this embodiment, when the voice coil 34 is energized, the direction of the current in the voice coil 34 can be parallel or approximately parallel to the winding plane of the voice coil 34. The current circulates through the first side portion 341 and the second side portion 342. The directions of the current in the first side portion 341 and the second side portion 342 are opposite. The direction of the magnetic field in the first sub-magnetic gap 3201 is opposite to the direction of the magnetic field in the second sub-magnetic gap 3202. As a result, the first side portion 341 and the second side portion 342 of the voice coil 34 are subjected to the same Ampere force F in the magnetic field. B The voice coil 34 can be moved along the Z-axis direction (Ampere force F B The first diaphragm 331, the second diaphragm 332, the first adjusting member 351 and the second adjusting member 352 are driven to move back and forth along the Z-axis. The entire vibration assembly vibrates in the same direction, and both the first diaphragm 331 and the second diaphragm 332 produce sound. It can be understood that the Ampere force F B The direction of satisfies the left-hand rule, that is, the Ampere force F B The direction can be from the first diaphragm 331 to the second diaphragm 332 , or from the second diaphragm 332 to the first diaphragm 331 .

[0134] In this embodiment, when the speaker 30 is working, the voice coil 34 is subjected to the Ampere force F after being energized. BThe vibration component generates an elastic restoring force due to the deviation from the equilibrium position. This restoring force can be provided by elastic components such as the first diaphragm 331 and the second diaphragm 332. The restoring force provided by the elastic components is generally opposite to the movement direction of the vibration component. For example, when the voice coil 34 vibrates and drives the first diaphragm 331 and the second diaphragm 332 to vibrate, the first diaphragm 331 and the second diaphragm 332 can provide a restoring force F M , recovery force F M The direction of the Ampere force F B The direction is opposite to that of the linear small displacement. Under the assumption of linear small displacement, the restoring force F M It is proportional to the displacement x of the first diaphragm 331 and the second diaphragm 332, that is: F M Equal to K ms* x, where K ms is the stiffness of the vibration component. Moreover, similar rules are still satisfied under large displacement, and K ms Expressed as K ms (x), that is, K ms Varies with displacement x.

[0135] The first diaphragm 331, the second diaphragm 332, the voice coil 34, the first adjustment member 351 and the second adjustment member 352 of the vibration assembly together constitute the vibration mass M. ms , so the first resonant frequency f0 of the vibration system is expressed as:

[0136]

[0137] In the low frequency band, before the frequency f0, the vibration component of the speaker 30 generally performs piston-like vibration, and its low frequency radiation capacity is proportional to (F B / K ms ), where F B is the Ampere force, K ms is the stiffness of the vibration component. Therefore, increasing F B Or lower K ms Both can enhance the low-frequency radiation capability of the speaker 30 and improve the low-frequency sensitivity of the speaker 30 .

[0138] See also Figure 7 and Figure 8 In this embodiment, when the voice coil 34 is energized and moves from the first diaphragm 331 to the second diaphragm 332, the first diaphragm 331 and the second diaphragm 332 move from the first diaphragm 331 to the second diaphragm 332 under the drive of the voice coil 34. The restoring force F MThe direction of the first diaphragm 331 is from the second diaphragm 332. The first adjusting member 351 and the second adjusting member 352 move away from the first diaphragm 331 under the drive of the voice coil 34. At this time, the first adjusting member 351 is close to the magnetic circuit assembly 32, and the static magnetic force F S1 The second adjusting member 352 is away from the magnetic circuit assembly 32, and the static magnetic force F on the second adjusting member 352 is increased. S2 The static magnetic force F on the first adjusting member 351 is reduced. S1 Greater than the static magnetostrictive force F on the second adjusting member 352 S2 The first adjusting member 351 and the second adjusting member 352 are subjected to a static magnetic force F S The direction is from the first diaphragm 331 to the second diaphragm 332, and the restoring force F M The direction is opposite to that of the first adjusting member 351 and the second adjusting member 352, and increases with the increase of the displacement S1, thereby offsetting part of the restoring force F on the vibration component. M The first adjusting member 351 and the second adjusting member 352 can provide a negative stiffness coefficient (-K s ), the stiffness of the vibration component is (K ms -K s ), the stiffness of the vibration component is reduced. This is beneficial for enhancing the low-frequency radiation capability of the speaker 30 and improving the low-frequency sensitivity of the speaker 30. In other words, the low-frequency performance of the speaker 30 is improved.

[0139] See also Figure 7 and Figure 9 , Figure 9 yes Figure 3 Another state of the speaker 30 is a partial structural cross-sectional view in the AA direction. Figure 9 The voice coil 34 of the loudspeaker 30 is energized, and the movement direction of the voice coil 34 is from the second diaphragm 332 toward the first diaphragm 331 .

[0140] In this embodiment, when the voice coil 34 is energized and moves from the second diaphragm 332 to the first diaphragm 331, the first diaphragm 331 and the second diaphragm 332 move from the second diaphragm 332 to the first diaphragm 331 under the drive of the voice coil 34. The restoring force F M The direction of the first diaphragm 331 is directed toward the second diaphragm 332. The first adjusting member 351 and the second adjusting member 352 move toward the direction close to the first diaphragm 331 under the drive of the voice coil 34. At this time, the first adjusting member 351 is close to the magnetic circuit assembly 32, and the static magnetic force F on the first adjusting member 351 is S1 The second adjusting member 352 is away from the magnetic circuit assembly 32, and the static magnetic force F on the second adjusting member 352 is reduced. S2The static magnetic force F on the first adjusting member 351 increases. S1 is smaller than the static magnetostrictive force F on the second adjusting member 352 S2 The first adjusting member 351 and the second adjusting member 352 are subjected to a static magnetic force F S The direction of the second diaphragm 332 points to the first diaphragm 331, and the restoring force F M The direction is opposite to that of the first adjusting member 351 and the second adjusting member 352, and increases with the increase of the displacement S2, thereby offsetting part of the restoring force F on the vibration component. M The first adjusting member 351 and the second adjusting member 352 can provide a negative stiffness coefficient (-K s ), the stiffness of the vibration component is (K ms -K s ), the stiffness of the vibration component is reduced. This is beneficial for enhancing the low-frequency radiation capability of the speaker 30 and improving the low-frequency sensitivity of the speaker 30. In other words, the low-frequency performance of the speaker 30 is improved.

[0141] Please refer to Figure 4 、 Figure 5 and Figure 6 In some embodiments, the speaker 30 may further include a first connecting member 361 and a second connecting member 362. The first connecting member 361 may include a peripheral portion 3611 and a connecting portion 3612, wherein the connecting portion 3612 is located inside the peripheral portion 3611 and connects to the peripheral portion 3611. It is understood that the peripheral portion 3611 may surround the connecting portion 3612. For example, the peripheral portion 3611 may be roughly rectangular, and the shape of the peripheral portion 3611 corresponds to the peripheral shape of the first diaphragm 331. The connecting portion 3612 may be roughly strip-shaped, and the shape of the connecting portion 3612 corresponds to the shape of the surface of the voice coil 34 facing the first diaphragm 331. It is understood that the connecting portion 3612 may be specifically designed based on the arrangement of the voice coil 34, that is, the shape of the surface of the voice coil 34 facing the first diaphragm 331.

[0142] In this embodiment, the peripheral portion 3611 of the first connecting member 361 is located between the housing 31 and the first diaphragm 331, and is fixedly connected to the housing 31 and the first diaphragm 331. The connecting portion 3612 of the first connecting member 361 is located between the first diaphragm 331 and the first adjusting member 351, and is fixedly connected to the first diaphragm 331 and the first adjusting member 351. That is, the connecting portion 3612 of the first connecting member 361 is located between the first diaphragm 331 and the voice coil 34, and is fixedly connected to the first diaphragm 331 and the voice coil 34. In this embodiment, the connecting portion 3612 of the first connecting member 361 is indirectly connected to the voice coil 34. In other embodiments, the first adjusting member 351 may not be located between the first diaphragm 331 and the voice coil 34, and the connecting portion 3612 of the first connecting member 361 may be directly connected to the voice coil 34.

[0143] Illustratively, the second connecting member 362 has the same shape as the first connecting member 361. The second connecting member 362 may include a peripheral portion 3621 and a connecting portion 3622, with the connecting portion 3622 being located inside the peripheral portion 3621 and connected to the peripheral portion 3621. It will be appreciated that the peripheral portion 3621 may surround the connecting portion 3622. Illustratively, the peripheral portion 3621 may be roughly rectangular, with its shape corresponding to the peripheral shape of the second diaphragm 332. The connecting portion 3622 may be roughly strip-shaped, with its shape corresponding to the surface shape of the voice coil 34 facing the second diaphragm 332. It will be appreciated that the connecting portion 3622 may be specifically designed based on the configuration of the voice coil 34, that is, the surface shape of the voice coil 34 facing the second diaphragm 332.

[0144] In this embodiment, the peripheral portion 3621 of the second connecting member 362 is located between the housing 31 and the first diaphragm 331, and is fixedly connected to the housing 31 and the second diaphragm 332. The connecting portion 3622 of the second connecting member 362 is located between the second diaphragm 332 and the second adjusting member 352, and is fixedly connected to the second diaphragm 332 and the second adjusting member 352. That is, the connecting portion 3622 of the second connecting member 362 is located between the second diaphragm 332 and the voice coil 34, and is fixedly connected to the second diaphragm 332 and the voice coil 34. In this embodiment, the connecting portion 3622 of the second connecting member 362 is indirectly connected to the voice coil 34. In other embodiments, the second adjusting member 352 may not be located between the second diaphragm 332 and the voice coil 34, and the connecting portion 3622 of the second connecting member 362 may be directly connected to the voice coil 34.

[0145] The loudspeaker 30 of the embodiment of the present application includes a first connector 361 and a second connector 362, and the voice coil 34 can be connected to the first diaphragm 331 and the second diaphragm 332 respectively through the first connector 361 and the second connector 362. In this way, the vibration stability of the vibration component is better when it vibrates. In addition, the first connector 361 and the second connector 362 are respectively provided on both sides of the voice coil 34 to ensure the structural symmetry of the vibration component relative to the magnetic circuit component 32, so that the upper and lower vibration stiffness of the vibration component are symmetrical, which is conducive to improving the vibration stability of the vibration component. In addition, the first connector 361 and the second connector 362 can have a certain degree of elasticity. When the vibration component vibrates, the first connector 361 and the second connector 362 can provide a restoring force for the vibration component, and the direction of the restoring force is opposite to the vibration direction. That is, the first connector 361 and the second connector 362 can enhance the stiffness of the vibration component.

[0146] In some embodiments, the first connecting member 361 and the second connecting member 362 may be made of plastic, metal, or the like.

[0147] In some embodiments, the first connector 361 and / or the second connector 362 may also have conductive properties. The first connector 361 and / or the second connector 362 are electrically connected to the voice coil 34, so that the voice coil 34 can be electrically connected to devices outside the speaker 30 through the first connector 361 and / or the second connector 362. In other words, external current can reach the voice coil 34 through the first connector 361 and / or the second connector 362.

[0148] In other embodiments, the speaker 30 may be provided with only one connector, one connector connected between the voice coil 34 and the first diaphragm 331, or one connector connected between the voice coil 34 and the second diaphragm 332. This application does not limit the specific number and shape of the connectors. In other embodiments, the shapes of the first connector 361 and the second connector 362 may be different.

[0149] Please refer again Figure 4 and Figure 5 In some embodiments, the shell 31 is a roughly rectangular cylinder. The shell 31 is a hollow structure with openings on both sides. The two openings of the shell 31 are respectively a first opening 3111 and a second opening 3112. The first opening 3111 and the second opening 3112 can be connected to the inner cavity 311. The periphery of the first diaphragm 331 and the periphery of the second diaphragm 332 are fixedly connected to the shell 31, and the first diaphragm 331 covers the first opening 3111 of the shell 31, and the second diaphragm 332 covers the second opening 3112 of the shell 31. That is, the first diaphragm 331 and the second diaphragm 332 respectively cover the opposite sides of the shell 31 to seal the inner cavity 311.

[0150] In other embodiments, the shape of the shell 31 may also be a cylinder, a square cylinder, or a special shape.

[0151] In this embodiment, the speaker 30 may further include a mounting bracket 37. The mounting bracket 37 is disposed within the inner cavity 311. For example, the housing 31 may include a first slot 312 and a second slot 313, respectively disposed on two opposing inner sidewalls along the length of the housing 31. The mounting bracket 37 may be restrained within the housing 31 by the first slot 312 and the second slot 313. The first slot 312 and the second slot 313 may restrict movement of the mounting bracket 37 in the Y-axis and the Z-axis, thereby stably securing the mounting bracket 37 to the housing 31. Of course, in other embodiments, the housing 31 may not include the first slot 312 and the second slot 313. The mounting bracket 37 may be secured to the housing 31 via bonding, bolting, or other connection methods. Alternatively, the housing 31 may include other retaining structures in addition to the first slot 312 and the second slot 313 to secure the mounting bracket 37 and the magnetic circuit assembly 32 to the housing 31. This application does not limit the connection method between the mounting bracket 37 and the housing 31.

[0152] In this embodiment, the mounting bracket 37 is located within the inner cavity of the housing 31, and the mounting bracket 37 and the housing 31 are split into an inner and outer structure. In other embodiments, the mounting bracket 37 and the housing 31 may be integrally formed components, with the mounting bracket 37 located inside the housing 31. Alternatively, the mounting bracket 37 may be located inside the housing 31, and the housing 31 and mounting bracket 37 may be split into an upper and lower structure. In other words, both the housing 31 and mounting bracket 37 may be split into an upper and lower structure, and the upper and lower parts of the housing 31 and mounting bracket 37 may be connected.

[0153] Please refer to Figure 4 and Figure 5The magnetic circuit assembly 32 can be fixed to the mounting frame 37. Exemplarily, the mounting frame 37 is a roughly rectangular column. The mounting frame 37 is a hollow structure with an installation space 371 therein. Exemplarily, the mounting frame 37 can include a top wall 373 and a bottom wall 374 disposed opposite each other, as well as a first side wall 375 and a second side wall 376 disposed opposite each other, with the first side wall 375 and the second side wall 376 connected between the top wall 373 and the bottom wall 374. The top wall 373, the bottom wall 374, the first side wall 375, and the second side wall 376 collectively define the installation space 371. The magnetic circuit assembly 32 can be fixed within the installation space 371. The mounting frame 37 can also have a limiting notch 372. The limiting notch 372 can penetrate the top wall 373 and the bottom wall 374 of the mounting frame 37 along the Z-axis and connect to the installation space 371. The magnetic circuit assembly 32 can be at least partially located within the limiting notch 372. The limiting notches 372 can limit the movement of the magnetic circuit assembly 32 in the Y-axis direction, so that the magnetic circuit assembly 32 is stably fixed to the mounting bracket 37. For example, there can be four limiting notches 372, which are spaced apart. The first magnetic member 3211, the second magnetic member 3212, the third magnetic member 3221, and the fourth magnetic member 3222 of the magnetic circuit assembly 32 are respectively fixed to the four limiting notches 372.

[0154] In other embodiments, the speaker 30 may not include the mounting bracket 37 . In this case, the magnetic circuit assembly 32 may be directly fixed to the inner cavity 311 of the housing 31 .

[0155] See also Figure 5 and Figure 6 In some embodiments, the edges of the first diaphragm 331 and the second diaphragm 332 may further include a folding ring portion, which adopts a semicircular arc design to increase the displacement in the vibration direction. In actual use, other effective means to increase the displacement may be used, such as the folding ring portion adopting an elliptical design, or the first diaphragm 331 / the second diaphragm 332 adopting a material with a lower elastic modulus. Of course, in other embodiments, the first diaphragm 331 or the second diaphragm 332 may not include a folding ring portion. This application does not limit the shape of the first diaphragm 331 and the second diaphragm 332. Exemplarily, the first diaphragm 331 and / or the second diaphragm 332 may further include a dome 338, which is respectively fixed to the surface of the first diaphragm 331 and / or the second diaphragm 332 away from the voice coil 34 to increase the stiffness of the first diaphragm 331 and the second diaphragm 332.

[0156] In some embodiments, the vibration assembly may further include a connecting circuit (not shown). The connecting circuit may be provided on the surface of the first diaphragm 331 or the second diaphragm 332 on the side close to the voice coil 34. The connecting circuit is electrically connected to the voice coil 34. The connecting circuit may also be a wire. In some embodiments, a circuit lead-out solution is used by printing copper wire on the surface of the first diaphragm 331. Of course, in other embodiments, a circuit lead-out solution may also be used by etching a circuit on the first diaphragm 331, or the connecting circuit is provided on the second diaphragm 332. This application does not limit the circuit lead-out solution.

[0157] See also Figure 10A , Figure 10A yes Figure 3 The cross-sectional structure diagram of another embodiment of the loudspeaker 30 shown is taken along the AA direction.

[0158] The structure of the speaker 30 provided in this embodiment is Figure 3 The structure of the speaker 30 in the illustrated embodiment is substantially the same, and the common parts are not further described. The difference is that the speaker 30 provided in this embodiment includes multiple voice coils 34, and the arrangement direction of the multiple voice coils 34 is parallel to the width direction of the speaker 30. It is understood that the speaker 30 can be designed with a suitable aspect ratio based on actual needs, and the layout of the multiple voice coils 34 can be designed in combination with the aspect ratio of the speaker 30 to improve the stability of the vibration assembly during vibration.

[0159] In this embodiment, there are multiple magnetic gaps 320, each spaced apart across the width of the speaker 30. Multiple voice coils 34 are positioned corresponding to different magnetic gaps 320. It is understood that each voice coil 34 may be partially or completely located within the corresponding magnetic gap 320. When energized, the multiple voice coils 34 can vibrate synchronously, driving the first diaphragm 331, the second diaphragm 332, the first adjustment member 351, and the second adjustment member 352 to vibrate in the same direction. Exemplarily, there are multiple first adjustment members 351 and multiple second adjustment members 352. The multiple first adjustment members 351 correspond to, at least partially, the multiple magnetic gaps 320. The multiple second adjustment members 352 correspond to, at least partially, the multiple magnetic gaps 320.

[0160] Exemplarily, there are two voice coils 34 and two magnetic gaps 320. The first magnetic assembly 321 may include a first magnetic member 3211, a second magnetic member 3212, and a fifth magnetic member 3213, which are arranged in a spaced relationship. The first magnetic member 3211, the second magnetic member 3212, and the fifth magnetic member 3213 are sequentially arranged along the width of the speaker 30. Specifically, the second magnetic member 3212 is located between the first magnetic member 3211 and the fifth magnetic member 3213, and is disposed opposite each other. The polarities of the opposing ends of the first magnetic member 3211 and the second magnetic member 3212 are opposite, forming a first sub-magnetic gap 3201 of the magnetic gap 320 between the first magnetic member 3211 and the second magnetic member 3212. The polarities of the opposing ends of the second magnetic member 3212 and the fifth magnetic member 3213 are opposite, forming a first sub-magnetic gap 3201 of another magnetic gap 320 between the second magnetic member 3212 and the fifth magnetic member 3213.

[0161] For example, the second magnetic assembly 322 may include a third magnetic member 3221, a fourth magnetic member 3222, and a sixth magnetic member 3223 arranged in an interval. The third magnetic member 3221, the fourth magnetic member 3222, and the sixth magnetic member 3223 are sequentially arranged along the width of the speaker 30. Specifically, the fourth magnetic member 3222 is located between the third magnetic member 3221 and the sixth magnetic member 3223, and is disposed opposite the third magnetic member 3221 and the sixth magnetic member 3223, respectively. The polarities of the opposing ends of the third magnetic member 3221 and the fourth magnetic member 3222 are opposite, forming a second sub-magnetic gap 3202 of the magnetic gap 320 between the third and fourth magnetic members 3221 and 3222. The polarities of the opposing ends of the fourth magnetic member 3222 and the sixth magnetic member 3223 are opposite, forming a second sub-magnetic gap 3202 of another magnetic gap 320 between the fourth and sixth magnetic members 3222 and 3223. The first side portions 341 of the two voice coils 34 are at least partially located in the first sub-magnetic gap 3201 of the corresponding magnetic gap 320, and the second side portions 342 of the two voice coils 34 are at least partially located in the second sub-magnetic gap 3202 of the corresponding magnetic gap 320. In other embodiments, the number of voice coils 34 and magnetic gap 320 may be greater than two. It should be noted that the shapes of the multiple voice coils 34 may be identical or different. This application does not limit the specific number and shape of the voice coils 34.

[0162] See also Figure 10B , Figure 10B yes Figure 3 The schematic cross-sectional structure diagram of another embodiment of the loudspeaker 30 is shown in the BB direction.

[0163] The structure of the speaker 30 provided in this embodiment is Figure 3The structure of the speaker 30 in the illustrated embodiment is substantially the same, and the identical parts will not be repeated here. The difference is that the speaker 30 provided in this embodiment includes multiple voice coils 34, and the arrangement direction of the multiple voice coils 34 is parallel to the length direction of the speaker 30. The multiple voice coils 34 can make full use of the space in the length direction of the speaker 30 for arrangement, thereby reducing the space occupied in the width direction of the speaker 30, which is conducive to the miniaturization of the width of the speaker 30, so as to obtain a narrow and long product form. The speaker 30 is more suitable for elongated products, such as electronic devices 1000 such as reading pens and selfie sticks. It will be understood that in some other embodiments, the speaker 30 can be designed with a suitable aspect ratio according to actual needs. The layout of the multiple voice coils 34 can be designed in combination with the aspect ratio of the speaker 30 to improve the stability of the vibration component during vibration.

[0164] In this embodiment, the multiple voice coils 34 are at least partially located in the same magnetic gap 320. It is understandable that each voice coil 34 can be partially located in a magnetic gap 320, or each voice coil 34 can be completely located in a magnetic gap 320. After the multiple voice coils 34 are energized, the multiple voice coils 34 can vibrate synchronously and push the first diaphragm 331, the second diaphragm 332, the first adjustment member 351, and the second adjustment member 352 to vibrate in the same direction. Exemplarily, there are two voice coils 34. Both voice coils 34 are located in the same magnetic gap 320. In other embodiments, the number of voice coils 34 can be more than two. It should be noted that the shapes of the multiple voice coils 34 can be exactly the same or different. This application does not limit the specific number and shape of the voice coils 34.

[0165] In this embodiment, there are multiple first adjustment members 351 and multiple second adjustment members 352. The multiple first adjustment members 351 are spaced apart and all at least partially face the same magnetic gap 320. The multiple second adjustment members 352 are spaced apart and all at least partially face the same magnetic gap 320. In other embodiments, the multiple first adjustment members 351 and the multiple second adjustment members 352 may be a single integrated structure.

[0166] See also Figure 11 , Figure 11 yes Figure 3 The cross-sectional structure diagram of another embodiment of the loudspeaker 30 shown is taken along the AA direction.

[0167] The structure of the speaker 30 provided in this embodiment is Figure 3The structure of the speaker 30 in the illustrated embodiment is substantially the same, and the common parts are not further described. The difference is that the voice coil 34 of the speaker 30 provided in this embodiment includes a first sub-voice coil 34a and a second sub-voice coil 34b. The first sub-voice coil 34a and the second sub-voice coil 34b are arranged along the thickness direction of the speaker 30. It will be appreciated that the arrangement of multiple sub-voice coils 34 can fully utilize the space in the thickness direction of the speaker 30, thereby reducing the space occupied in the thickness direction of the speaker 30, facilitating the miniaturization of the speaker 30, and making the speaker 30 more suitable for thin flat-panel products, such as mobile phones, smart watches, tablet computers, and other electronic devices 1000.

[0168] In this embodiment, the magnetic gap 320 includes a first sub-magnetic gap 3201a, a second sub-magnetic gap 3202a, a third sub-magnetic gap 3203b, and a fourth sub-magnetic gap 3204b, which are arranged in an alternating manner. The first sub-magnetic gap 3201a and the second sub-magnetic gap 3202a are arranged perpendicular to the thickness of the speaker 30. The magnetic field direction of the first sub-magnetic gap 3201a is opposite to the magnetic field direction of the second sub-magnetic gap 3202a. The third sub-magnetic gap 3203b and the fourth sub-magnetic gap 3204b are arranged perpendicular to the thickness of the speaker 30, and the magnetic field direction of the third sub-magnetic gap 3203b is opposite to the magnetic field direction of the fourth sub-magnetic gap 3204b. The first sub-magnetic gap 3201a and the third sub-magnetic gap 3203b are arranged parallel to the thickness of the speaker 30, while the second sub-magnetic gap 3202a and the fourth sub-magnetic gap 3204b are arranged parallel to the thickness of the speaker 30.

[0169] Illustratively, the magnetic circuit assembly 32 includes a first magnetic assembly 323 and a second magnetic assembly 324, which are arranged along the thickness of the speaker 30. The first magnetic assembly 323 includes a first magnetic member 3231 and a second magnetic member 3232, which are arranged at intervals, and a third magnetic member 3233 and a fourth magnetic member 3234, which are arranged at intervals. The first magnetic member 3231, the second magnetic member 3232, the third magnetic member 3233, and the fourth magnetic member 3234 are arranged perpendicular to the thickness of the speaker 30. Illustratively, the first magnetic member 3231 and the second magnetic member 3232 are arranged opposite each other along the width of the speaker 30, and the third magnetic member 3233 and the fourth magnetic member 3234 are arranged opposite each other along the width of the speaker 30. The second magnetic member 3232 and the third magnetic member 3233 can be arranged in a close-fitting manner or spaced apart. The polarities of the opposing ends of the first magnetic member 3231 and the second magnetic member 3232 are opposite, forming a first sub-magnetic gap 3201a between the first magnetic member 3231 and the second magnetic member 3232. The polarities of the opposing ends of the third magnetic member 3233 and the fourth magnetic member 3234 are opposite, forming a second sub-magnetic gap 3202a between the third magnetic member 3233 and the fourth magnetic member 3234.

[0170] Exemplarily, the second magnetic assembly 324 includes a fifth magnetic member 3241 and a sixth magnetic member 3242, which are arranged in an interval, and a seventh magnetic member 3243 and an eighth magnetic member 3244, which are arranged in an interval. The fifth magnetic member 3241, the sixth magnetic member 3242, the seventh magnetic member 3243, and the eighth magnetic member 3244 are arranged perpendicular to the thickness of the speaker 30. Exemplarily, the fifth magnetic member 3241 and the sixth magnetic member 3242 are arranged opposite each other along the width of the speaker 30, and the seventh magnetic member 3243 and the eighth magnetic member 3244 are arranged opposite each other along the width of the speaker 30. The sixth magnetic member 3242 and the seventh magnetic member 3243 can be arranged in a close-fitting manner or spaced apart. The polarity of the opposing ends of the fifth magnetic member 3241 and the sixth magnetic member 3242 is opposite, forming a third sub-magnetic gap 3203b between the fifth magnetic member 3241 and the sixth magnetic member 3242. The polarities of the seventh magnetic member 3243 and the eighth magnetic member 3244 are opposite, and a fourth sub-magnetic gap 3204b is formed between the seventh magnetic member 3243 and the eighth magnetic member 3244. The structure of the magnetic circuit assembly 32 in this embodiment is relatively simple, and the manufacturing cost of the speaker 30 is relatively low.

[0171] In this embodiment, the first sub-voice coil 34a includes a first side portion 341a and a second side portion 342a that are opposite to each other. The first side portion 341 and the second side portion 342 of the second sub-voice coil 34b are located in the winding plane of the second sub-voice coil 34b. For example, the winding plane of the second sub-voice coil 34b can be perpendicular to the thickness direction of the loudspeaker 30. The first side portion 341a is at least partially located in the first sub-magnetic gap 3201a, and the second side portion 342a is at least partially located in the second sub-magnetic gap 3202a. In this embodiment of the present application, the first side portion 341 and the second side portion 342 of the first sub-voice coil 34a are located in the winding plane of the first sub-voice coil 34a. For example, the winding plane of the first sub-voice coil 34a can be perpendicular to the thickness direction of the loudspeaker 30. The second sub-voice coil 34b includes a third side portion 341b and a fourth side portion 342b opposite to each other. The third side portion 341b is at least partially located in the third sub-magnetic gap 3203b, and the fourth side portion 342b is at least partially located in the fourth sub-magnetic gap 3204b.

[0172] In this embodiment, the speaker 30 may further include a bracket 343. The bracket 343 may be located between the first sub-voice coil 34a and the second sub-voice coil 34b, and may securely connect the first sub-voice coil 34a and the second sub-voice coil 34b. The speaker 30 of this embodiment connects the first sub-voice coil 34a and the second sub-voice coil 34b by providing the bracket 343, so that the first sub-voice coil 34a and the second sub-voice coil 34b can form a single unit. When the first sub-voice coil 34a and the second sub-voice coil 34b are energized, the first sub-voice coil 34a and the second sub-voice coil 34b can vibrate synchronously as a unit, thereby improving the consistency and stability of the vibration of the vibration component.

[0173] In this embodiment, the first adjustment member 351 may include a first sub-adjustment member 351a and a second sub-adjustment member 351b. The first sub-adjustment member 351a and the second sub-adjustment member 351b are both fixedly connected to the first diaphragm 331 and the first sub-voice coil 34a. The first sub-adjustment member 351a at least partially faces the first sub-magnetic gap 3201a. The second sub-adjustment member 351b at least partially faces the second sub-magnetic gap 3202a. The second adjustment member 352 may include a third sub-adjustment member 352a and a fourth sub-adjustment member 352b. The third sub-adjustment member 352a and the fourth sub-adjustment member 352b are both fixedly connected to the second diaphragm 332 and the second sub-voice coil 34b. The third sub-adjustment member 352a at least partially faces the third sub-magnetic gap 3203b. The fourth sub-adjustment member 352b at least partially faces the fourth sub-magnetic gap 3204b. In other embodiments, the voice coil 34 may further include a third sub-voice coil and a fourth sub-voice coil. It should be noted that the shapes of the multiple sub-voice coils may be identical or different. This application does not limit the specific number and shape of the sub-voice coils 34 .

[0174] See also Figure 12 and Figure 13 , Figure 12 yes Figure 3 FIG. 1 is a schematic structural diagram of another embodiment of a loudspeaker 30 shown in FIG. Figure 13 yes Figure 12 The schematic diagram of the partial structure of the speaker 30 is shown. For the convenience of description, the definition Figure 12 The width direction of the speaker 30 is the X-axis direction, the length direction of the speaker 30 is the Y-axis direction, and the thickness direction of the speaker 30 is the Z-axis direction. The X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other.

[0175] The loudspeaker 30 provided in this embodiment may include a housing 31, a magnetic circuit assembly 32, a first diaphragm 331, a second diaphragm 332, a voice coil 34, a first adjustment member 351, and a second adjustment member 352. The housing 31 has an inner cavity 311, and the magnetic circuit assembly 32 is located in the inner cavity 311. The first diaphragm 331 and the second diaphragm 332 are respectively located on opposite sides of the magnetic circuit assembly 32, and the periphery of the first diaphragm 331 and the periphery of the second diaphragm 332 are both fixedly connected to the housing 31. Among them, the second diaphragm 332, the magnetic circuit assembly 32 and the first diaphragm 331 are arranged in sequence in the thickness direction of the loudspeaker 30 (that is, the Z-axis direction). The voice coil 34 is located between the first diaphragm 331 and the second diaphragm 332, and is fixedly connected to the first diaphragm 331 and the second diaphragm 332. The magnetic circuit assembly 32 has a magnetic gap 320. The voice coil 34 is at least partially located in the magnetic gap 320. It is understandable that the voice coil 34 may be partially located within the magnetic gap 320 , or the voice coil 34 may be entirely located within the magnetic gap 320 .

[0176] The structure and arrangement of the housing 31, the first diaphragm 331, the second diaphragm 332, the voice coil 34, the first adjusting member 351 and the second adjusting member 352 of the loudspeaker 30 in this embodiment can be similar to Figure 3 The structures and arrangements of the housing 31 , the first diaphragm 331 , the second diaphragm 332 , the voice coil 34 , the first adjusting member 351 and the second adjusting member 352 of the loudspeaker 30 shown are substantially the same, and the same parts are not repeated here.

[0177] The speaker 30 in this embodiment is Figure 3 The difference between the loudspeaker 30 shown is the structure of the magnetic circuit assembly 32. The structure of the magnetic circuit assembly 32 in this embodiment will be described in detail below.

[0178] See also Figure 13 、 Figure 14 and Figure 15 , Figure 14 yes Figure 13 A schematic structural diagram of an embodiment of a magnetic circuit assembly 32 is shown. Figure 15 yes Figure 12 The schematic cross-sectional structure diagram of the loudspeaker 30 in the CC direction is shown.

[0179] In this embodiment, the magnetic circuit assembly 32 may include a first magnet 3251, a second magnet 3252, a first magnetic conductive member 3261, a second magnetic conductive member 3262, a third magnetic conductive member 3271, a fourth magnetic conductive member 3272, a first connecting member 3264, a second connecting member 3265, a third connecting member 3274, and a fourth connecting member 3275. The first magnet 3251 and the second magnet 3252 are spaced apart and arranged perpendicular to the thickness of the speaker 30. For example, the first magnet 3251 and the second magnet 3252 may be arranged opposite each other along the width of the speaker 30. The first magnet 3251 may be mounted in the first slot 312 of the housing 31 by adhesive bonding, and the second magnet 3252 may be mounted in the second slot 313 of the housing 31 by adhesive bonding. The first slot 312 and the second slot 313 may serve as position limiters for the first magnet 3251 and the second magnet 3252.

[0180] Exemplarily, the polarities of the opposing ends of the first magnet 3251 and the second magnet 3252 are opposite, forming a magnetic field loop between the first magnet 3251 and the second magnet 3252. The first magnetic conductive member 3261 is fixed to the side of the first magnet 3251 facing the first diaphragm 331, and the second magnetic conductive member 3262 is fixed to the side of the second magnet 3252 facing the first diaphragm 331. The third magnetic conductive member 3271 is fixed to the side of the first magnet 3251 facing the second diaphragm 332, and the fourth magnetic conductive member 3272 is fixed to the side of the second magnet 3252 facing the second diaphragm 332. The first magnetic conductive member 3261 and the third magnetic conductive member 3271 can be fixed to opposite sides of the first magnet 3251 by bonding. The second magnetic conductive member 3262 and the fourth magnetic conductive member 3272 can be fixed to opposite sides of the first magnet 3251 by bonding. In other embodiments, the first magnet 3251 , the second magnet 3252 and the first to fourth magnetic conductive members 3261 , 3272 may be connected by other connection methods besides bonding.

[0181] Exemplarily, the first connecting piece 3264 and the second connecting piece 3265 can both be roughly semi-annular. The first connecting piece 3264 and the second connecting piece 3265 are respectively connected to the two ends of the first magnetic conductive piece 3261, and the first connecting piece 3264 and the second connecting piece 3265 are respectively connected to the two ends of the second magnetic conductive piece 3262. It can be understood that the first magnetic conductive piece 3261 and the second magnetic conductive piece 3262 can be connected to form a whole through the first connecting piece 3264 and the second connecting piece 3265. The first magnetic conductive piece 3261, the second magnetic conductive piece 3262, the first connecting piece 3264 and the second connecting piece 3265 can also be an integrally molded structure. In this way, the first magnetic conductive piece 3261 and the second magnetic conductive piece 3262 can be assembled with other components as a whole, which facilitates the assembly of the first magnetic conductive piece 3261 and the second magnetic conductive piece 3262. It should be understood that the material of the first connecting member 3264 and the second connecting member 3265 can be the same as or different from the material of the first magnetic conductive member 3261 and the second magnetic conductive member 3262 .

[0182] In other embodiments, the magnetic circuit assembly 32 may also not include the first connecting member 3264 and the second connecting member 3265. The first magnetic conductive member 3261 and the second magnetic conductive member 3262 are connected to the first magnet 3251 and the second magnet 3252, respectively.

[0183] Exemplarily, the third connecting member 3274 and the fourth connecting member 3275 can both be roughly semi-annular. The third connecting member 3274 and the fourth connecting member 3275 are respectively connected to the two ends of the third magnetic conductive member 3271, and the third connecting member 3274 and the fourth connecting member 3275 are respectively connected to the two ends of the fourth magnetic conductive member 3272. It can be understood that the third magnetic conductive member 3271 and the fourth magnetic conductive member 3272 can be connected to form a whole through the third connecting member 3274 and the fourth connecting member 3275. The third magnetic conductive member 3271, the fourth magnetic conductive member 3272, the third connecting member 3274 and the fourth connecting member 3275 can also be an integrally molded structure. In this way, the third magnetic conductive member 3271 and the fourth magnetic conductive member 3272 can be assembled with other components as a whole, which facilitates the assembly of the third magnetic conductive member 3271 and the fourth magnetic conductive member 3272. It should be understood that the material of the third connecting member 3274 and the fourth connecting member 3275 may be the same as or different from the material of the third magnetic conductive member 3271 and the fourth magnetic conductive member 3272 .

[0184] In other embodiments, the magnetic circuit assembly 32 may also not include the third connecting member 3274 and the fourth connecting member 3275. The third magnetic conductive member 3271 and the fourth magnetic conductive member 3272 are connected to the first magnet 3251 and the second magnet 3252, respectively.

[0185] In other embodiments, the magnetic circuit assembly 32 may include only the first magnet 3251 and the second magnet 3252, and may not include the first magnetic conductive member 3261, the second magnetic conductive member 3262, the third magnetic conductive member 3271, and the fourth magnetic conductive member 3272. Alternatively, the magnetic circuit assembly 32 may include the first magnet 3251 and the second magnet 3252 and the first magnetic conductive member 3261 and the second magnetic conductive member 3262; or alternatively, the magnetic circuit assembly 32 may include the first magnet 3251 and the second magnet 3252 and the third magnetic conductive member 3271 and the fourth magnetic conductive member 3272.

[0186] See also Figure 15 and Figure 16 , Figure 16 yes Figure 12 The schematic cross-sectional structure diagram of the loudspeaker 30 in the DD direction is shown.

[0187] In this embodiment, the magnetic gap 320 includes a first sub-magnetic gap 3201 and a second sub-magnetic gap 3202, which are spaced apart. The first sub-magnetic gap 3201 is located between the first magnetic conductive member 3261 and the second magnetic conductive member 3262, while the second sub-magnetic gap 3202 is located between the third magnetic conductive member 3271 and the fourth magnetic conductive member 3272. It is understood that the first magnetic conductive member 3261 and the second magnetic conductive member 3262 can enhance the magnetic field strength of the first sub-magnetic gap 3201. The first magnetic conductive member 3261 and the second magnetic conductive member 3262 enable the first magnet 3251 and the second magnet 3252 to be smaller in size under conditions of the same magnetic field strength within the first sub-magnetic gap 3201, facilitating the miniaturization of the entire speaker 30. The third magnetic conductive member 3271 and the fourth magnetic conductive member 3272 can also enhance the magnetic field strength of the second sub-magnetic gap 3202. The third magnetic conductive member 3271 and the fourth magnetic conductive member 3272 enable the first magnet 3251 and the second magnet 3252 to be smaller in size under the same magnetic field strength in the second sub-magnetic gap 3202 , which is conducive to the miniaturization of the entire speaker 30 .

[0188] Exemplarily, the first sub-magnetic gap 3201 and the second sub-magnetic gap 3202 are arranged in the thickness direction of the speaker 30. The first side portion 341 of the voice coil 34 is at least partially located in the first sub-magnetic gap 3201. It is understood that the first side portion 341 can be located entirely or partially in the first sub-magnetic gap 3201. The second side portion 342 of the voice coil 34 is at least partially located in the first sub-magnetic gap 3201. It is understood that the second side portion 342 can be located entirely or partially in the second sub-magnetic gap 3202.

[0189] See also Figure 17 , Figure 17 yes Figure 12The speaker 30 is a partial structural cross-sectional view in the CC direction in a state shown. Figure 17 The voice coil 34 of the loudspeaker 30 is shown unpowered, with the vibrating assembly in an equilibrium position.

[0190] In this embodiment, the first adjusting member 351 is affected by the magnetic field of the first sub-magnetic gap 3201. At this time, the first sub-magnetic gap 3201 generates a static magnetostatic force F on the first adjusting member 351. S1 .Magnetostatic force F S1 The direction of the magnetostatic force F is from the first diaphragm 331 to the second diaphragm 332, and when the first adjustment member 351 is close to the magnetic circuit assembly 32, the magnetostatic force F S1 When the first adjusting member 351 is away from the magnetic circuit assembly 32, the static magnetostatic force F S1 The second adjusting member 352 will be affected by the magnetic field of the second sub-magnetic gap 3202. At this time, the second sub-magnetic gap 3202 generates a static magnetic force F on the second adjusting member 352. S2 .Magnetostatic force F S2 The direction of the magnetostatic force F is from the second diaphragm 332 to the first diaphragm 331, and when the second adjusting member 352 is close to the magnetic circuit assembly 32, the magnetostatic force F S2 When the second adjusting member 352 is away from the magnetic circuit assembly 32, the static magnetostatic force F S2 The size is reduced.

[0191] In this embodiment, the first adjusting member 351 is subjected to a static magnetic force F S1 The direction of the second adjusting member 352 is related to the static magnetic force F S2 The direction is opposite to that of the first adjusting member 351, and when the voice coil 34 is not energized, the static magnetostrictive force F S1 The magnitude of the static magnetic force F on the second adjusting member 352 S2 are equal in size. At this time, F S1 and F S2 Can cancel each other out and the vibrating components are in a balanced position.

[0192] See also Figure 17 and Figure 18 , Figure 18 yes Figure 12 Another state of the speaker 30 is a partial structural cross-sectional view in the CC direction. Figure 18 The voice coil 34 of the loudspeaker 30 is energized, and the movement direction of the voice coil 34 is from the first diaphragm 331 to the second diaphragm 332 .

[0193] In this embodiment, the polarization directions of the first magnet 3251 and the second magnet 3252 are opposite and parallel to the thickness direction of the speaker 30. For example, the end of the first magnet 3251 near the first magnetic member 3261 is the north pole, and the end of the first magnet 3251 near the third magnetic member 3271 is the south pole. In this case, the polarization direction of the first magnet 3251 points from the first magnetic member 3261 to the third magnetic member 3271 and is parallel to the thickness direction of the speaker 30. Correspondingly, the end of the second magnet 3252 near the second magnetic member 3262 is the south pole, and the end of the second magnet 3252 near the fourth magnetic member 3272 is the north pole. The polarization direction of the second magnet 3252 points from the fourth magnetic member 3272 to the second magnetic member 3262 and is parallel to the thickness direction of the speaker 30. Of course, in other embodiments, the end of the first magnet 3251 near the first magnetic member 3261 can be an S pole, and the end of the first magnet 3251 near the third magnetic member 3271 can be an N pole. In this case, the polarization direction of the first magnet 3251 points from the third magnetic member 3271 to the first magnetic member 3261 and is parallel to the thickness direction of the speaker 30. Correspondingly, the end of the second magnet 3252 near the second magnetic member 3262 can be an N pole, and the end of the second magnet 3252 near the fourth magnetic member 3272 can be an N pole. The polarization direction of the second magnet 3252 points from the second magnetic member 3262 to the fourth magnetic member 3272 and is parallel to the thickness direction of the speaker 30.

[0194] In this embodiment, because the polarization directions of the first magnet 3251 and the second magnet 3252 are opposite, the direction of the magnetic field in the first sub-magnetic gap 3201 formed between the first magnetic conductive member 3261 and the second magnetic conductive member is opposite to the direction of the magnetic field in the first sub-magnetic gap 3201 formed between the third magnetic conductive member 3271 and the fourth magnetic conductive member. When the voice coil 34 is energized, the direction of the current in the voice coil 34 can be parallel or approximately parallel to the winding plane of the voice coil 34. The current circulates through the first side portion 341 and the second side portion 342, and the current directions in the first side portion 341 and the second side portion 342 are opposite. The magnetic field direction of the first sub-magnetic gap 3201 is opposite to the magnetic field direction of the second sub-magnetic gap 3202, causing the first side portion 341 and the second side portion 342 of the voice coil 34 to be subjected to the same Ampere force F in the magnetic field. B The voice coil 34 can be moved along the Z-axis direction (Ampere force F B The voice coil 34 can move in a direction that cuts the magnetic flux lines, and the voice coil 34 has a strong consistency in movement, resulting in a high driving efficiency. At this time, the voice coil 34 can push the first diaphragm 331, the second diaphragm 332, the first adjustment member 351 and the second adjustment member 352 to move back and forth along the Z-axis. The entire vibration assembly vibrates in the same direction, and both the first diaphragm 331 and the second diaphragm 332 produce sound. It can be understood that the Ampere force F B The direction of satisfies the left-hand rule, that is, the Ampere force F BThe direction can be from the first diaphragm 331 to the second diaphragm 332 , or from the second diaphragm 332 to the first diaphragm 331 .

[0195] See also Figure 17 and Figure 18 In this embodiment, when the voice coil 34 is energized and moves from the first diaphragm 331 to the second diaphragm 332, the first diaphragm 331 and the second diaphragm 332 move from the first diaphragm 331 to the second diaphragm 332 under the drive of the voice coil 34. The restoring force F M The direction of the first diaphragm 331 is from the second diaphragm 332. The first adjusting member 351 and the second adjusting member 352 move away from the first diaphragm 331 under the drive of the voice coil 34. At this time, the first adjusting member 351 is close to the magnetic circuit assembly 32, and the static magnetic force F S1 The second adjusting member 352 is away from the magnetic circuit assembly 32, and the static magnetic force F on the second adjusting member 352 is increased. S2 The static magnetic force F on the first adjusting member 351 is reduced. S1 Greater than the static magnetostrictive force F on the second adjusting member 352 S2 The first adjusting member 351 and the second adjusting member 352 are subjected to a static magnetic force F S The direction is from the first diaphragm 331 to the second diaphragm 332, and the restoring force F M The direction is opposite to that of the first adjusting member 351 and the second adjusting member 352, and increases with the increase of the displacement S1, thereby offsetting part of the restoring force F on the vibration component. M The first adjusting member 351 and the second adjusting member 352 can provide a negative stiffness coefficient (-K s ), the stiffness of the vibration component is (K ms -K s ), the stiffness of the vibration component is reduced. This is beneficial for enhancing the low-frequency radiation capability of the speaker 30 and improving the low-frequency sensitivity of the speaker 30. In other words, the low-frequency performance of the speaker 30 is improved.

[0196] See also Figure 17 and Figure 19 , Figure 19 yes Figure 12 The cross-sectional structure diagram of another embodiment of the loudspeaker 30 in the CC direction is shown. For example, Figure 19 The voice coil 34 of the loudspeaker 30 is energized, and the movement direction of the voice coil 34 is from the second diaphragm 332 toward the first diaphragm 331 .

[0197] In this embodiment, when the voice coil 34 is energized and moves from the second diaphragm 332 to the first diaphragm 331, the first diaphragm 331 and the second diaphragm 332 move from the second diaphragm 332 to the first diaphragm 331 under the drive of the voice coil 34. The restoring force F M The direction of the first diaphragm 331 is directed toward the second diaphragm 332. The first adjusting member 351 and the second adjusting member 352 move toward the direction close to the first diaphragm 331 under the drive of the voice coil 34. At this time, the first adjusting member 351 is close to the magnetic circuit assembly 32, and the static magnetic force F on the first adjusting member 351 is S1 The second adjusting member 352 is away from the magnetic circuit assembly 32, and the static magnetic force F on the second adjusting member 352 is reduced. S2 The static magnetic force F on the first adjusting member 351 increases. S1 is smaller than the static magnetostrictive force F on the second adjusting member 352 S2 The first adjusting member 351 and the second adjusting member 352 are subjected to a static magnetic force F S The direction of the second diaphragm 332 points to the first diaphragm 331, and the restoring force F M The direction is opposite to that of the first adjusting member 351 and the second adjusting member 352, and increases with the increase of the displacement S2, thereby offsetting part of the restoring force F on the vibration component. M The first adjusting member 351 and the second adjusting member 352 can provide a negative stiffness coefficient (-K s ), the stiffness of the vibration component is (K ms -K s ), the stiffness of the vibration component is reduced. This is beneficial for enhancing the low-frequency radiation capability of the speaker 30 and improving the low-frequency sensitivity of the speaker 30. In other words, the low-frequency performance of the speaker 30 is improved.

[0198] See also Figure 20 , Figure 20 yes Figure 12 The cross-sectional structure diagram of another embodiment of the loudspeaker 30 in the CC direction is shown.

[0199] The structure of the speaker 30 provided in this embodiment is Figure 12 The structure of the speaker 30 in the illustrated embodiment is substantially the same, and the common parts are not further described. The difference is that the speaker 30 provided in this embodiment includes multiple voice coils 34, and the arrangement direction of the multiple voice coils 34 is parallel to the width direction of the speaker 30. It is understood that the speaker 30 can be designed with a suitable aspect ratio based on actual needs, and the layout of the multiple voice coils 34 can be designed in combination with the aspect ratio of the speaker 30 to improve the stability of the vibration assembly during vibration.

[0200] In this embodiment, there are multiple magnetic gaps 320, each spaced apart across the width of the speaker 30. Multiple voice coils 34 are positioned corresponding to different magnetic gaps 320. It is understood that each voice coil 34 may be partially or completely located within the corresponding magnetic gap 320. When energized, the multiple voice coils 34 can vibrate synchronously, driving the first diaphragm 331, the second diaphragm 332, the first adjustment member 351, and the second adjustment member 352 to vibrate in the same direction. Exemplarily, there are multiple first adjustment members 351 and multiple second adjustment members 352. The multiple first adjustment members 351 correspond to, at least partially, the multiple magnetic gaps 320. The multiple second adjustment members 352 correspond to, at least partially, the multiple magnetic gaps 320.

[0201] Exemplarily, there are two voice coils 34 and two magnetic gaps 320. The magnetic circuit assembly 32 may include a first magnet 3251, a second magnet 3252, a third magnet 3253, a first magnetic conductive member 3261, a second magnetic conductive member 3262, a fifth magnetic conductive member 3263, a third magnetic conductive member 3271, a fourth magnetic conductive member 3272, and a sixth magnetic conductive member 3273. The first magnetic conductive member 3261, the second magnetic conductive member 3262, and the fifth magnetic conductive member 3263 are sequentially arranged along the width of the speaker 30. Specifically, the second magnetic conductive member 3262 is located between the first magnetic conductive member 3261 and the fifth magnetic conductive member 3263, and is disposed opposite the first magnetic conductive member 3261 and the fifth magnetic conductive member 3263. The first magnetic conductive member 3261 and the second magnetic conductive member 3262 form a first sub-magnetic gap 3201 of the magnetic gap 320. A first sub-magnetic gap 3201 of another magnetic gap 320 is formed between the second magnetic conductive member 3262 and the fifth magnetic conductive member 3263. A fourth magnetic conductive member 3272 is located between the third magnetic conductive member 3271 and the sixth magnetic conductive member 3273, and is disposed opposite the third magnetic conductive member 3271 and the sixth magnetic conductive member 3273, respectively. A second sub-magnetic gap 3202 of another magnetic gap 320 is formed between the third magnetic conductive member 3271 and the fourth magnetic conductive member 3272. A second sub-magnetic gap 3202 of another magnetic gap 320 is formed between the fourth magnetic conductive member 3272 and the sixth magnetic conductive member 3273.

[0202] Exemplarily, the first side portions 341 of the two voice coils 34 are at least partially located in the first sub-magnetic gap 3201 of the corresponding magnetic gap 320 , and the second side portions 342 of the two voice coils 34 are at least partially located in the second sub-magnetic gap 3202 of the corresponding magnetic gap 320 .

[0203] In other embodiments, the number of voice coils 34 and magnetic gaps 320 may be greater than two. It should be noted that the shapes of the multiple voice coils 34 may be identical or different. This application does not limit the specific number and shape of the voice coils 34.

[0204] In other embodiments, the arrangement direction of the multiple voice coils 34 is parallel to the length direction of the speaker 30. In this case, the multiple voice coils 34 can make full use of the space in the length direction of the speaker 30 for arrangement, thereby reducing the space occupied in the width direction of the speaker 30, which is beneficial to the miniaturization of the speaker 30 in width, so as to obtain a narrow and long product form. The speaker 30 is more suitable for long strip products, such as electronic devices 1000 such as reading pens and selfie sticks. It can be understood that in some other embodiments, the speaker 30 can be designed with a suitable aspect ratio according to actual needs, and the layout of the multiple voice coils 34 can be designed in combination with the aspect ratio of the speaker 30 to improve the stability of the vibration component during the vibration process. Please refer to Figure 21 , Figure 21 yes Figure 12 The cross-sectional structure diagram of another embodiment of the loudspeaker 30 in the CC direction is shown.

[0205] The structure of the speaker 30 provided in this embodiment is Figure 12 The structure of the speaker 30 in the illustrated embodiment is substantially the same, and the common parts are not further described. The difference is that the voice coil 34 of the speaker 30 provided in this embodiment includes a first sub-voice coil 34a and a second sub-voice coil 34b. The first sub-voice coil 34a and the second sub-voice coil 34b are arranged along the thickness direction of the speaker 30. It will be appreciated that the arrangement of multiple sub-voice coils 34 can fully utilize the space in the thickness direction of the speaker 30, thereby reducing the space occupied in the thickness direction of the speaker 30, facilitating the miniaturization of the speaker 30, and making the speaker 30 more suitable for thin flat-panel products, such as mobile phones, smart watches, tablet computers, and other electronic devices 1000.

[0206] In this embodiment, the magnetic gap 320 includes a first sub-magnetic gap 3201a, a second sub-magnetic gap 3202a, a third sub-magnetic gap 3203b, and a fourth sub-magnetic gap 3204b, which are arranged in an alternating manner. Exemplarily, the first sub-magnetic gap 3201a and the second sub-magnetic gap 3202a are arranged perpendicular to the thickness of the speaker 30. The magnetic field direction of the first sub-magnetic gap 3201a is opposite to the magnetic field direction of the second sub-magnetic gap 3202a, and the magnetic field direction of the third sub-magnetic gap 3203b is opposite to the magnetic field direction of the fourth sub-magnetic gap 3204b. The first sub-magnetic gap 3201a and the third sub-magnetic gap 3203b are arranged parallel to the thickness of the speaker 30, while the second sub-magnetic gap 3202a and the fourth sub-magnetic gap 3204b are arranged parallel to the thickness of the speaker 30.

[0207] Illustratively, the magnetic circuit assembly 32 includes a first magnet 3251, a second magnet 3252, a third magnet 3253, a first magnetic conductive member 3281, a second magnetic conductive member 3282, a third magnetic conductive member 3283, a fourth magnetic conductive member 3291, a fifth magnetic conductive member 3292, and a sixth magnetic conductive member 3293. The first magnet 3251, the second magnet 3252, and the third magnet 3253 are arranged at intervals and in a direction perpendicular to the thickness of the speaker 30. The first magnetic conductive member 3281 is fixed to the side of the first magnet 3251 facing the first diaphragm 331, the second magnetic conductive member 3282 is fixed to the side of the second magnet 3252 facing the first diaphragm 331, and the third magnetic conductive member 3283 is fixed to the side of the third magnet 3253 facing the first diaphragm 331. The first sub-magnetic gap 3201a is located between the first magnetic conductive member 3281 and the second magnetic conductive member 3282, and the second sub-magnetic gap 3202a is located between the second magnetic conductive member 3282 and the third magnetic conductive member 3283. The fourth magnetic conductive member 3291 is fixed to the side of the first magnet 3251 facing the second diaphragm 332, the fifth magnetic conductive member 3292 is fixed to the side of the second magnet 3252 facing the second diaphragm 332, and the sixth magnetic conductive member 3293 is fixed to the side of the third magnet 3253 facing the second diaphragm 332. The third sub-magnetic gap 3203b is located between the fourth magnetic conductive member 3291 and the fifth magnetic conductive member 3292, and the fourth sub-magnetic gap 3204b is located between the fifth magnetic conductive member 3292 and the sixth magnetic conductive member 3293.

[0208] In this embodiment, the first sub-voice coil 34a includes opposing first and second sides 341a and 342a. In this embodiment of the present application, the first and second sides 341 and 342 of the voice coil 34 are located in the winding plane of the voice coil 34. For example, the winding plane of the voice coil 34 may be parallel to the thickness of the speaker 30. The first side 341a is at least partially located in the first sub-magnetic gap 3201a, and the second side 342a is at least partially located in the second sub-magnetic gap 3202a. The second sub-voice coil 34b includes opposing third and fourth sides 341b and 342b. The third side 341b is at least partially located in the third sub-magnetic gap 3203b, and the fourth side 342b is at least partially located in the fourth sub-magnetic gap 3204b.

[0209] In this embodiment, the speaker 30 may further include a bracket 343. The bracket 343 is located between the first sub-voice coil 34a and the second sub-voice coil 34b and fixedly connects the first sub-voice coil 34a and the second sub-voice coil 34b. By providing the bracket 343 to connect the first sub-voice coil 34a and the second sub-voice coil 34b, the speaker 30 of this embodiment can form a single unit. When the first sub-voice coil 34a and the second sub-voice coil 34b are energized, the first sub-voice coil 34a and the second sub-voice coil 34b can vibrate synchronously as a unit, thereby improving the vibration consistency and stability of the vibration component.

[0210] In this embodiment, the first adjusting member 351 may include a first sub-adjusting member 351a and a second sub-adjusting member 351b. The first sub-adjusting member 351a and the second sub-adjusting member 351b are both fixedly connected to the first diaphragm 331 and the first sub-voice coil 34a. The first sub-adjusting member 351a at least partially faces the first sub-magnetic gap 3201a. The second sub-adjusting member 351b at least partially faces the second sub-magnetic gap 3202a. The second adjusting member 352 may include a third sub-adjusting member 352a and a fourth sub-adjusting member 352b. The third sub-adjusting member 352a and the fourth sub-adjusting member 352b are both fixedly connected to the second diaphragm 332 and the second sub-voice coil 34b. The third sub-adjusting member 352a at least partially faces the third sub-magnetic gap 3203b. The fourth sub-adjusting member 352b at least partially faces the fourth sub-magnetic gap 3204b.

[0211] In other embodiments, the voice coil 34 may further include a third sub-voice coil, a fourth sub-voice coil, etc. It should be noted that the shapes of the multiple sub-voice coils may be identical or different. This application does not limit the specific number and shape of the sub-voice coils 34.

[0212] See also Figure 22 and Figure 23 , Figure 22 yes Figure 3 FIG. 1 is a schematic structural diagram of another embodiment of a loudspeaker 30 shown in FIG. Figure 23 yes Figure 22 The schematic diagram of the partial structure of the speaker 30 is shown. For the convenience of description, the definition Figure 22 The width direction of the speaker 30 is the X-axis direction, the length direction of the speaker 30 is the Y-axis direction, and the thickness direction of the speaker 30 is the Z-axis direction.

[0213] The loudspeaker 30 provided in this embodiment may include a shell 31, a magnetic circuit assembly 32, a first diaphragm 331, a second diaphragm 332, a voice coil 34 and an adjustment member 35. The shell 31 has an inner cavity 311, and the magnetic circuit assembly 32 is located in the inner cavity 311. The first diaphragm 331 and the second diaphragm 332 are respectively located on opposite sides of the magnetic circuit assembly 32, and the periphery of the first diaphragm 331 and the periphery of the second diaphragm 332 are fixedly connected to the shell 31. Among them, the second diaphragm 332, the magnetic circuit assembly 32 and the first diaphragm 331 are arranged in sequence in the thickness direction of the loudspeaker 30 (that is, the Z-axis direction). The magnetic circuit assembly 32 has a magnetic gap 320. The voice coil 34 is located between the first diaphragm 331 and the second diaphragm 332, and is fixedly connected to the first diaphragm 331 and the second diaphragm 332. The voice coil 34 is at least partially located in the magnetic gap 320. It is understood that the voice coil 34 may be partially located in the magnetic gap 320, or the voice coil 34 may be entirely located in the magnetic gap 320. The structure and arrangement of the housing 31, the first diaphragm 331, the second diaphragm 332 and the voice coil 34 of the speaker 30 in this embodiment may be similar to those in FIG. Figure 3 The structures and arrangements of the housing 31 , the first diaphragm 331 , the second diaphragm 332 and the voice coil 34 of the loudspeaker 30 are substantially the same, and the same parts will not be described again.

[0214] The speaker 30 provided in this embodiment may further include a first connecting member 361 and a second connecting member 362. The first connecting member 361 may include a peripheral portion 3611 and a connecting portion 3612, wherein the connecting portion 3612 is located inside the peripheral portion 3611 and connects the peripheral portion 3611. The peripheral portion 3611 of the first connecting member 361 is located between the housing 31 and the first diaphragm 331, and fixedly connects the housing 31 and the first diaphragm 331.

[0215] The connecting portion 3612 of the first connecting member 361 is located between the first diaphragm 331 and the voice coil 34 , and fixedly connects the first diaphragm 331 and the voice coil 34 .

[0216] The second connecting member 362 has the same shape as the first connecting member 361 .

[0217] The second connecting member 362 may include a peripheral portion 3621 and a connecting portion 3622. The peripheral portion 3621 of the second connecting member 362 is located between the housing 31 and the first diaphragm 331, and is fixedly connected to the housing 31 and the second diaphragm 332. The connecting portion 3622 of the second connecting member 362 is located between the second diaphragm 332 and the voice coil 34, and is fixedly connected to the second diaphragm 332 and the voice coil 34. The structure and arrangement of the first connecting member 361 and the second connecting member 362 of the speaker 30 in this embodiment can be similar to Figure 3 The structures of the first connecting member 361 and the second connecting member 362 are substantially the same, and the same parts are not repeated here.

[0218] See also Figure 24 and Figure 25 , Figure 24 yes Figure 22 The schematic cross-sectional structure diagram of the loudspeaker 30 in the EE direction is shown. Figure 25 yes Figure 22 The schematic cross-sectional structure diagram of the loudspeaker 30 in the FF direction is shown.

[0219] In this embodiment, the structure of the magnetic circuit component 32 is similar to Figure 15 The structure of the magnetic circuit assembly 32 shown is basically the same, and the same parts can be referred to in Figure 15 The relevant description of the structure of the speaker 30 is omitted here. For example, the magnetic gap 320 includes a first magnetic gap 3205 and a second magnetic gap 3206. The arrangement direction of the first magnetic gap 3205 and the second magnetic gap 3206 is parallel to the thickness direction of the speaker 30. The first magnetic gap 3205 is located between the first magnetic conductive member 3261 and the second magnetic conductive member 3262, and the second magnetic gap 3206 is located between the third magnetic conductive member 3271 and the fourth magnetic conductive member 3272. The first magnetic gap 3205 and the second magnetic gap 3206 are arranged in the thickness direction of the speaker 30.

[0220] Exemplarily, the voice coil 34 is a hollow structure and includes a first portion 344 and a second portion 345 spaced apart from each other. The first portion 344 and the second portion 345 are arranged along the thickness direction of the speaker 30. In the embodiment of the present application, the first portion 344 and the second portion 345 of the voice coil 34 are located in the winding plane of the voice coil 34. Exemplarily, the winding plane of the voice coil 34 may be perpendicular to the thickness direction of the speaker 30. The first portion 344 is fixedly connected to the first diaphragm 331 and is at least partially located in the first magnetic gap 3205. It is understood that the first portion 344 may be partially located in the first magnetic gap 3205, or the first portion 344 may be entirely located in the first magnetic gap 3205. The second portion 345 is fixedly connected to the second diaphragm 332, and the voice coil 34 is at least partially located in the second magnetic gap 3206. It is understood that the second portion 345 may be partially located in the second magnetic gap 3206, or the first portion 344 may be entirely located in the second magnetic gap 3206.

[0221] In this embodiment, the adjustment member 35 is located between the first part 344 and the second part 345, and fixedly connects the first part 344 and the second part 345. The adjustment member 35 is also located between the first magnetic gap 3205 and the second magnetic gap 3206. Exemplarily, the speaker 30 may further include a connecting frame 38. The connecting frame 38 fixedly connects the voice coil 34 and the adjustment member 35. The connecting frame 38 is located on the inner side of the voice coil 34 and fixedly connects the voice coil 34. The connecting frame 38 may be roughly annular and arranged around the adjustment member 35. The connecting frame 38 may be fixed to the outer circumference of the adjustment member 35 and the inner side of the voice coil 34 by bonding. The number of adjustment members 35 may be one or more. When the number of adjustment members 35 is multiple, the multiple adjustment members 35 are all arranged inside the voice coil 34 and connected to the voice coil 34.

[0222] For example, the adjustment member 35 can be located at the center of the magnetic circuit assembly 32. In this way, the structural symmetry of the vibration assembly relative to the magnetic circuit assembly 32 is ensured, so that the upper and lower vibration stiffness of the vibration assembly are symmetrical, which is conducive to improving the vibration stability of the vibration assembly.

[0223] In some embodiments, the adjusting member 35 is a magnetic member. The adjusting member 35 will be affected by the magnetic field of the magnetic gap 320. For example, the adjusting member 35 can be a magnet, soft iron, etc. The present application does not limit the material of the adjusting member 35. For example, the adjusting member 35 can be soft iron. Soft iron is easily magnetized by the magnetic field and demagnetized after the external magnetic field is removed. The cost of soft iron is relatively low, which helps to reduce the production cost of the speaker 30. Among them, the soft iron can be pure iron or an alloy with a very high iron content. For example, the adjusting member 35 can be steel with a low carbon content, such as "general cold-rolled carbon steel sheet and strip" (Steel Plate Cold Common, SPCC). In some other embodiments, the adjusting member 35 can also be an iron-silicon alloy, a nickel-iron alloy, etc.

[0224] The speaker 30 in this embodiment, by providing a connecting bracket 38, can first assemble the adjusting member 35 with the connecting bracket 38, and then assemble the connecting bracket 38 with the voice coil 34. This ensures a fixed connection between the adjusting member 35 and the voice coil 34, and the assembly of the adjusting member 35 and the voice coil 34 is relatively simple. In other embodiments, the speaker 30 may not be provided with a connecting bracket 38, and the adjusting member 35 may be fixedly connected to the voice coil 34 by bonding or other means. This application does not limit the connection method between the adjusting member 35 and the voice coil 34.

[0225] See also Figure 26 , Figure 26 yes Figure 22 The speaker 30 is a partial structural cross-sectional view in the EE direction in a state shown. Figure 26 The voice coil 34 of the loudspeaker 30 is shown unpowered, with the vibrating assembly in an equilibrium position.

[0226] In this embodiment, the adjusting member 35 is affected by the magnetic fields of the first magnetic gap 3205 and the second magnetic gap 3206. The first magnetic gap 3205 generates a static magnetic force F on the adjusting member 35. S1 .Magnetostatic force F S1 The direction of the magnetostatic force F is from the second diaphragm 332 to the first diaphragm 331, and when the adjustment member 35 is close to the first magnetic gap 3205, the magnetostatic force F S1 When the adjustment member 35 is away from the first magnetic gap 3205, the static magnetostatic force F S1 The second magnetic gap 3206 generates a static magnetic force F on the adjustment member 35. S2 .Magnetostatic force F S2 The direction of the magnetostatic force F is from the first diaphragm 331 to the second diaphragm 332, and when the adjustment member 35 is close to the second magnetic gap 3206, the magnetostatic force F S2 When the adjustment member 35 is away from the second magnetic gap 3206, the static magnetostriction F S2 The size of the static magnetic force F on the adjusting member 35 is reduced. S1 The direction of the magnetostatic force F S2 The direction is opposite to that of the magnetostatic force F. S1 The magnitude of the static magnetic force F S2 are equal in size. At this time, F S1 and F S2 Can cancel each other out and the vibrating components are in a balanced position.

[0227] Please refer to Figure 26 and Figure 27 , Figure 27 yes Figure 22 Another state of the speaker 30 is a partial structural cross-sectional view in the EE direction. Figure 27 The voice coil 34 of the loudspeaker 30 is energized, and the movement direction of the voice coil 34 is from the first diaphragm 331 to the second diaphragm 332 .

[0228] Exemplarily, the polarization directions of the first magnet 3251 and the second magnet 3252 are opposite and parallel to the thickness direction of the speaker 30. The magnetic field direction of the first magnetic gap 3205 formed between the first magnetic conductive member 3261 and the second magnetic conductive member 3262 is opposite to the magnetic field direction of the first magnetic gap 3205 formed between the third magnetic conductive member 3271 and the fourth magnetic conductive member. When the voice coil 34 is energized, the direction of the current in the voice coil 34 can be parallel or approximately parallel to the winding plane of the voice coil 34. The current circulates through the first portion 344 and the second portion 345, and the current directions in the first portion 344 and the second portion 345 are opposite. The magnetic field direction of the first magnetic gap 3205 is opposite to the magnetic field direction of the second magnetic gap 3206, so that the first portion 344 and the second portion 345 of the voice coil 34 are subjected to the same Ampere force F in the magnetic field. B The voice coil 34 can be moved along the Z-axis direction (Ampere force F B The voice coil 34 can move the first diaphragm 331, the second diaphragm 332 and the adjustment member 35 to move back and forth along the Z axis. B The direction of satisfies the left-hand rule, that is, the Ampere force F B The direction can be from the first diaphragm 331 to the second diaphragm 332 , or from the second diaphragm 332 to the first diaphragm 331 .

[0229] In this embodiment, when the voice coil 34 is energized and moves from the first diaphragm 331 to the second diaphragm 332, the first diaphragm 331 and the second diaphragm 332 move from the first diaphragm 331 to the second diaphragm 332 under the drive of the voice coil 34. The restoring force F provided by the first diaphragm 331 and the second diaphragm 332 is M The direction of the magnetic field is from the second diaphragm 332 to the first diaphragm 331. Driven by the voice coil 34, the adjusting member 35 also moves in the direction away from the first diaphragm 331. At this time, the adjusting member 35 is close to the second magnetic gap 3206 and away from the first magnetic gap 3205. The static magnetic force F S1 Less than the static magnetostatic force F S2 That is, the static magnetic force F on the entire adjusting member 35 is S The direction is from the first diaphragm 331 to the second diaphragm 332, and the restoring force F M The direction is opposite to that of the adjusting member 35, and increases with the increase of the displacement S1 of the adjusting member 35, thereby offsetting part of the restoring force F on the vibration component. M , the adjustment member 35 can provide a negative stiffness coefficient (-K s ), the stiffness of the vibration component is (K ms -K s), the stiffness of the vibration component is reduced. This is beneficial for enhancing the low-frequency radiation capability of the speaker 30 and improving the low-frequency sensitivity of the speaker 30. In other words, the low-frequency performance of the speaker 30 is improved.

[0230] See also Figure 26 and Figure 28 , Figure 28 yes Figure 22 The cross-sectional structure diagram of another embodiment of the loudspeaker 30 in the EE direction is shown. For example, Figure 28 The voice coil 34 of the loudspeaker 30 is energized, and the movement direction of the voice coil 34 is from the second diaphragm 332 toward the first diaphragm 331 .

[0231] In this embodiment, when the voice coil 34 is energized and moves from the second diaphragm 332 to the first diaphragm 331, the first diaphragm 331 and the second diaphragm 332 move from the second diaphragm 332 to the first diaphragm 331 under the drive of the voice coil 34. The restoring force F provided by the first diaphragm 331 and the second diaphragm 332 is M The direction of the magnetic field is from the first diaphragm 331 to the second diaphragm 332. Driven by the voice coil 34, the adjusting member 35 also moves toward the direction close to the first diaphragm 331. At this time, the adjusting member 35 is close to the first magnetic gap 3205 and away from the second magnetic gap 3206. The static magnetic force F S1 Greater than the static magnetostatic force F S2 That is, the static magnetic force F on the entire adjusting member 35 is S The direction of the second diaphragm 332 points to the first diaphragm 331, and the restoring force F M The direction is opposite to that of the adjusting member 35, and increases with the increase of the displacement S2 of the adjusting member 35, thereby offsetting part of the restoring force F on the vibration component. M , the adjustment member 35 can provide a negative stiffness coefficient (-K s ), the stiffness of the vibration component is (K ms -K s ), the stiffness of the vibration component is reduced. This is beneficial for enhancing the low-frequency radiation capability of the speaker 30 and improving the low-frequency sensitivity of the speaker 30. In other words, the low-frequency performance of the speaker 30 is improved.

[0232] In the embodiment of the present application, the speaker 30 can provide different negative stiffness coefficients by changing the size of the adjustment member 35, and the stiffness of the vibration component can achieve different reduction effects, thereby achieving different improvement effects on the low-frequency performance of the speaker 30, and can more conveniently realize the design of multiple types of different speakers 30.

[0233] The following table compares multiple parameters (including stiffness, mass, first resonant frequency f0, sensitivity SPL, etc.) of the loudspeaker in different implementation schemes to illustrate the impact of the size of the adjustment member 35 on the performance of the loudspeaker 30. The three implementation schemes of the loudspeaker listed in the table are: (1) The loudspeaker does not include an adjustment member; (2) The loudspeaker 30 includes an adjustment member 35 and a connecting frame 38, and the size of the adjustment member 35 (length * width * thickness) is 0.75mm * 0.5mm * 0.35mm. The adjustment member 35 is soft iron. The number of adjustment members 35 can be two. The mass of the two adjustment members 35 is 2mg. The mass of the connecting frame 38 is 3mg; (3) The loudspeaker 30 includes an adjustment member 35 and a connecting frame 38, and the size of the adjustment member 35 (length * width * thickness) is 0.75mm * 1mm * 0.35mm. The adjustment member 35 is soft iron. The number of adjustment members 35 can be two. The mass of the two adjustment members 35 is 4mg. The mass of the connecting frame 38 is 3mg.

[0234]

[0235] As shown in the table above, using solution (1), the speaker's stiffness is approximately 0.185 N / mm. The first resonant frequency f0 is approximately 226 Hz. At an operating power of 0.02 W, the speaker's low-frequency (100 Hz) sensitivity (SPL) is approximately 70.1 dB.

[0236] With solution (2), the stiffness of the loudspeaker 30 is approximately 0.095 N / mm, which is approximately 0.09 N / mm lower than that of solution (1). The first resonant frequency f0 is approximately 164 Hz, which is approximately 62 Hz lower than that of solution (1). At an operating power of 0.02 W, the low-frequency (100 Hz) sensitivity (SPL) of the loudspeaker 30 is approximately 74.1 dB, which is approximately 4 dB higher than that of solution (1). Compared with solution (1), the low-frequency radiation performance of solution (2) is improved.

[0237] With solution (3), the stiffness of the loudspeaker 30 is approximately 0.035 N / mm, which is approximately 0.15 N / mm lower than that of solution (1). The first resonant frequency f0 is approximately 107 Hz, which is approximately 119 Hz lower than that of solution (1). At an operating power of 0.02 W, the low-frequency (100 Hz) sensitivity (SPL) of the loudspeaker 30 is approximately 5.6 dB higher than that of solution (1). The low-frequency radiation performance of solution (3) is improved compared to that of solution (1).

[0238] See also Figure 29 , Figure 29 3 is a frequency response curve diagram of the loudspeaker 30 under the same working power in different implementation schemes. Figure 29In the frequency response curve of the speaker 30 shown in FIG. 1 , the horizontal axis represents the frequency of the speaker 30 (in Hz), and the vertical axis represents the sensitivity of the speaker 30 (in dB). Figure 29 35. The frequency response curve diagrams of the speaker 30 including the adjustment member 35 and the frequency response curve diagrams of the speaker 30 not including the adjustment member 35 are shown respectively. Figure 29 The dotted line in FIG. 3 illustrates a frequency response curve of a solution in which the loudspeaker 30 includes the adjustment member 35 , and the dotted line in FIG. 4 illustrates a frequency response curve of a solution in which the loudspeaker does not include the adjustment member 35 .

[0239] In some embodiments, the speaker 30 may include an adjusting member 35 and a connecting frame 38, and the size (length * width * thickness) of the adjusting member 35 is 0.75mm * 0.5mm * 0.35mm. Exemplarily, the speaker 30 may adopt the implementation scheme (2) mentioned above. Under the same operating power (0.02W), the speaker 30 includes the solution of the adjusting member 35 (that is, implementation scheme (2)). Compared with the solution that the speaker 30 does not include the adjusting member 35 (that is, implementation scheme (1)), the low-frequency (100Hz) sensitivity of the speaker 30 provided in the embodiment of the present application is improved, which can be increased by about 3dB or more, and the first resonant frequency f0 is reduced, which significantly improves the low-frequency radiation capability of the speaker 30.

[0240] See also Figure 30 , Figure 30 yes Figure 22 The cross-sectional structure diagram of another embodiment of the loudspeaker 30 in the EE direction is shown.

[0241] The structure of the speaker 30 provided in this embodiment is Figure 22 The structure of the speaker 30 in the illustrated embodiment is substantially the same, and the common parts are not further described. The difference is that the speaker 30 provided in this embodiment includes multiple voice coils 34, and the arrangement direction of the multiple voice coils 34 is parallel to the width direction of the speaker 30. It is understood that the speaker 30 can be designed with a suitable aspect ratio based on actual needs, and the layout of the multiple voice coils 34 can be designed in combination with the aspect ratio of the speaker 30 to improve the stability of the vibration assembly during vibration.

[0242] In this embodiment, there are multiple magnetic gaps 320, which are arranged at intervals along the width of the speaker 30. Multiple voice coils 34 are respectively arranged corresponding to the magnetic gaps 320. Each magnetic gap 320 includes a first magnetic gap 3205 and a second magnetic gap 3206. The multiple voice coils 34 are at least partially located in the multiple magnetic gaps 320 in a one-to-one correspondence. It is understood that each voice coil 34 can be partially located in the corresponding magnetic gap 320, or each voice coil 34 can be completely located in the corresponding magnetic gap 320. When the multiple voice coils 34 are energized, the multiple voice coils 34 can vibrate synchronously and drive the first diaphragm 331, the second diaphragm 332, and the adjustment member 35 to vibrate in the same direction.

[0243] Exemplarily, there are two voice coils 34 and two magnetic gaps 320. The magnetic circuit assembly 32 may include a first magnet 3251, a second magnet 3252, a third magnet 3253, a first magnetic conductive member 3261, a second magnetic conductive member 3262, a fifth magnetic conductive member 3263, a third magnetic conductive member 3271, a fourth magnetic conductive member 3272, and a sixth magnetic conductive member 3273. The first magnetic conductive member 3261, the second magnetic conductive member 3262, and the fifth magnetic conductive member 3263 are sequentially arranged along the width of the speaker 30. Specifically, the second magnetic conductive member 3262 is located between the first magnetic conductive member 3261 and the fifth magnetic conductive member 3263, and is disposed opposite the first magnetic conductive member 3261 and the fifth magnetic conductive member 3263. A first magnetic gap 3205 of the magnetic gap 320 is formed between the first magnetic conductive member 3261 and the second magnetic conductive member 3262. A first magnetic gap 3205 of another magnetic gap 320 is formed between the second magnetic conductive member 3262 and the fifth magnetic conductive member 3263. The fourth magnetic conductive member 3272 is located between the third magnetic conductive member 3271 and the sixth magnetic conductive member 3273, and is disposed opposite the third magnetic conductive member 3271 and the sixth magnetic conductive member 3273, respectively. A second magnetic gap 3206 of another magnetic gap 320 is formed between the third magnetic conductive member 3271 and the fourth magnetic conductive member 3272. A second magnetic gap 3206 of another magnetic gap 320 is formed between the fourth magnetic conductive member 3272 and the sixth magnetic conductive member 3273.

[0244] Exemplarily, the winding plane of the voice coil 34 is parallel to the thickness direction of the speaker 30. The first portions 344 of the two voice coils 34 are at least partially located in the first magnetic gap 3205 of the corresponding magnetic gap 320, and the second portions 345 of the two voice coils 34 are at least partially located in the second magnetic gap 3206 of the corresponding magnetic gap 320.

[0245] In other embodiments, the number of voice coils 34 and magnetic gaps 320 may be greater than two. It should be noted that the shapes of the multiple voice coils 34 may be identical or different. This application does not limit the specific number and shape of the voice coils 34.

[0246] In this embodiment, there are multiple adjusting members 35 , which are disposed between the first magnetic gaps 3205 and the second magnetic gaps 3206 in a one-to-one correspondence.

[0247] In other embodiments, the arrangement of the multiple voice coils 34 is parallel to the length of the speaker 30. The multiple voice coils 34 are at least partially located within the same magnetic gap 320. It is understood that each voice coil 34 can be partially or completely located within a single magnetic gap 320. When energized, the multiple voice coils 34 can vibrate synchronously, driving the first diaphragm 331, the second diaphragm 332, and the adjustment member 35 to vibrate in the same direction. The multiple voice coils 34 can be arranged to fully utilize the space along the length of the speaker 30, thereby reducing the space occupied along the width of the speaker 30. This facilitates miniaturization of the width of the speaker 30, resulting in a narrow and long product form factor. The speaker 30 is more suitable for elongated products, such as electronic devices 1000 such as reading pens and selfie sticks. It is understood that in other embodiments, the speaker 30 can be designed with a suitable aspect ratio based on actual needs. The layout of the multiple voice coils 34 can be designed in conjunction with the aspect ratio of the speaker 30 to improve the stability of the vibration assembly during vibration.

[0248] In some embodiments, the structure of the magnetic circuit component 32 of the speaker 30 can also be referred to Figure 5 The structure of the magnetic circuit assembly 32 is shown. The magnetic circuit assembly 32 may include a first magnetic assembly 321 and a second magnetic assembly 322. The first magnetic assembly 321 and the second magnetic assembly 322 are spaced apart along the thickness direction of the speaker 30. For example, the first magnetic assembly 321 and the second magnetic assembly 322 may be arranged opposite each other. The first magnetic assembly 321 may include a first magnetic member 3211 and a second magnetic member 3212 spaced apart. The first magnetic member 3211 and the second magnetic member 3212 are arranged perpendicular to the thickness direction of the speaker 30. The polarities of the opposing ends of the first magnetic member 3211 and the second magnetic member 3212 are opposite, forming a first magnetic gap 3205 between the first magnetic member 3211 and the second magnetic member 3212. The second magnetic assembly 322 may include a third magnetic member 3221 and a fourth magnetic member 3222 spaced apart. The third magnetic member 3221 and the fourth magnetic member 3222 are arranged perpendicular to the thickness direction of the speaker 30. The polarities of the opposite ends of the third magnetic member 3221 and the fourth magnetic member 3222 are opposite, and a second magnetic gap 3206 is formed between the third magnetic member 3221 and the fourth magnetic member 3222 .

[0249] See also Figure 31 , Figure 31 yes Figure 22 The cross-sectional structure diagram of another embodiment of the loudspeaker 30 in the EE direction is shown.

[0250] The structure of the speaker 30 provided in this embodiment is Figure 12 The structure of the speaker 30 in the illustrated embodiment is substantially the same, and the common parts are not further described. The difference is that the first portion 344 of the voice coil 34 of the speaker 30 provided in this embodiment is a first sub-voice coil. The second portion 345 of the voice coil 34 is a second sub-voice coil. The first and second sub-voice coils are arranged along the thickness direction of the speaker 30. It will be appreciated that the arrangement of multiple sub-voice coils can fully utilize the space in the thickness direction of the speaker 30, thereby reducing the space occupied in the thickness direction of the speaker 30, facilitating the miniaturization of the speaker 30, and making the speaker 30 more suitable for thin flat-panel products, such as mobile phones, smart watches, tablet computers, and other electronic devices 1000.

[0251] Exemplarily, the first magnetic gap 3205 includes a first sub-magnetic gap 3205a and a second sub-magnetic gap 3205b, which are arranged in a direction perpendicular to the thickness of the speaker 30. The magnetic field direction of the first sub-magnetic gap 3205a is opposite to the magnetic field direction of the second sub-magnetic gap 3205b. The second magnetic gap 3206 includes a third sub-magnetic gap 3206a and a fourth sub-magnetic gap 3206b, which are arranged in a direction opposite to the magnetic field direction of the fourth sub-magnetic gap 3206b. The first sub-magnetic gap 3205a and the third sub-magnetic gap 3206a are arranged in a direction parallel to the thickness of the speaker 30. The second sub-magnetic gap 3205b and the fourth sub-magnetic gap 3206b are arranged in a direction parallel to the thickness of the speaker 30.

[0252] Illustratively, the magnetic circuit assembly 32 includes a first magnet 3251, a second magnet 3252, a third magnet 3253, a first magnetic conductive member 3281, a second magnetic conductive member 3282, a third magnetic conductive member 3283, a fourth magnetic conductive member 3291, a fifth magnetic conductive member 3292, and a sixth magnetic conductive member 3293. The first magnet 3251, the second magnet 3252, and the third magnet 3253 are arranged at intervals and in a direction perpendicular to the thickness of the speaker 30. The first magnetic conductive member 3281 is fixed to the side of the first magnet 3251 facing the first diaphragm 331, the second magnetic conductive member 3282 is fixed to the side of the second magnet 3252 facing the first diaphragm 331, and the third magnetic conductive member 3283 is fixed to the side of the third magnet 3253 facing the first diaphragm 331. The first sub-magnetic gap 3205a is located between the first magnetic conductive member 3281 and the second magnetic conductive member 3282, and the second sub-magnetic gap 3205b is located between the second magnetic conductive member 3282 and the third magnetic conductive member 3283. The fourth magnetic conductive member 3291 is fixed to the side of the first magnet 3251 facing the second diaphragm 332, the fifth magnetic conductive member 3292 is fixed to the side of the second magnet 3252 facing the second diaphragm 332, and the sixth magnetic conductive member 3293 is fixed to the side of the third magnet 3253 facing the second diaphragm 332. The third sub-magnetic gap 3206a is located between the fourth magnetic conductive member 3291 and the fifth magnetic conductive member 3292, and the fourth sub-magnetic gap 3206b is located between the fifth magnetic conductive member 3292 and the sixth magnetic conductive member 3293.

[0253] In the embodiment of the present application, the first magnetic conductive member 3281 and the second magnetic conductive member 3282 can enhance the magnetic field strength of the first sub-magnetic gap 3205a. The first magnetic conductive member 3281 and the second magnetic conductive member 3282 enable the first magnet 3251 and the second magnet 3252 to be smaller under conditions of equal magnetic field strength in the first sub-magnetic gap 3205a, facilitating the miniaturization of the entire speaker 30. The second magnetic conductive member 3282 and the third magnetic conductive member 3283 can enhance the magnetic field strength of the second sub-magnetic gap 3205b. The second magnetic conductive member 3282 and the third magnetic conductive member 3283 enable the second magnet 3252 and the third magnet 3253 to be smaller under conditions of equal magnetic field strength in the second sub-magnetic gap, facilitating the miniaturization of the entire speaker 30. The fourth magnetic conductive member 3291 and the fifth magnetic conductive member 3292 can enhance the magnetic field strength of the third sub-magnetic gap 3206a. The fourth and fifth magnetic conductive members 3291 and 3292 enable the first and second magnets 3251 and 3252 to be smaller in size within the third sub-magnetic gap 3206a under conditions of equal magnetic field strength, thereby facilitating the miniaturization of the entire speaker 30. The fifth and sixth magnetic conductive members 3292 and 3293 enhance the magnetic field strength within the fourth sub-magnetic gap 3206b. The fifth and sixth magnetic conductive members 3292 and 3293 enable the second and third magnets 3252 and 3253 to be smaller in size within the fourth sub-magnetic gap 3206b under conditions of equal magnetic field strength, thereby facilitating the miniaturization of the entire speaker 30.

[0254] In this embodiment, the first portion 344 of the voice coil 34 (i.e., the first sub-voice coil) includes opposing first and second sides 3441 and 3442. The first side 3441 is at least partially located in the first sub-magnetic gap 3205a, and the second side 3442 is at least partially located in the second sub-magnetic gap 3205b. The second portion 345 of the voice coil 344 includes opposing third and fourth sides 3451 and 3452. The third side 3451 is at least partially located in the third sub-magnetic gap 3206a, and the fourth side 3452 is at least partially located in the fourth sub-magnetic gap 3206b.

[0255] In this embodiment, the speaker 30 may further include a bracket 343. The bracket 343 is positioned between the first portion 344 and the second portion 345, and securely connects the first portion 344 and the second portion 345. By providing the bracket 343 to connect the first portion 344 and the second portion 345, the speaker 30 of this embodiment forms a single unit. When power is supplied to the first portion 344 and the second portion 345, the first portion 344 and the second portion 345 vibrate synchronously as a unit, thereby improving the consistency and stability of the vibration of the vibration assembly.

[0256] In this embodiment, the adjusting member 35 may include a first sub-adjusting member 35a and a second sub-adjusting member 35b. The first sub-adjusting member 35a is fixedly connected to the first portion 344 and is disposed between the first sub-magnetic gap 3205a and the third sub-magnetic gap 3206a. The second sub-adjusting member 35b is fixedly connected to the second portion 345 and is disposed between the second sub-magnetic gap 3205b and the fourth sub-magnetic gap 3206b.

[0257] In other embodiments, the voice coil 34 may further include a third sub-voice coil, a fourth sub-voice coil, etc. It should be noted that the shapes of the multiple sub-voice coils may be identical or different. This application does not limit the specific number and shape of the sub-voice coils.

[0258] In some embodiments, the structure of the magnetic circuit component 32 of the speaker 30 can also be referred to Figure 11 The structure of the magnetic circuit assembly 32 is shown. The magnetic circuit assembly 32 may include a first magnetic assembly 321 and a second magnetic assembly 322. The first magnetic assembly 323 and the second magnetic assembly 324 are arranged along the thickness direction of the speaker 30. The first magnetic assembly 323 includes a first magnetic member 3231 and a second magnetic member 3232, which are spaced apart from each other, and a third magnetic member 3233 and a fourth magnetic member 3234, which are spaced apart from each other. The first magnetic member 3231, the second magnetic member 3232, the third magnetic member 3233, and the fourth magnetic member 3234 are arranged perpendicular to the thickness direction of the speaker 30. The polarities of the opposing ends of the first magnetic member 3231 and the second magnetic member 3232 are opposite, forming a first sub-magnetic gap 3201a between them. The polarities of the opposing ends of the third magnetic member 3233 and the fourth magnetic member 3234 are opposite, forming a second sub-magnetic gap 3202a between them. The second magnetic assembly 324 includes a fifth magnetic member 3241 and a sixth magnetic member 3242, which are arranged at intervals, as well as a seventh magnetic member 3243 and an eighth magnetic member 3244, which are arranged at intervals. The fifth magnetic member 3241, the sixth magnetic member 3242, the seventh magnetic member 3243, and the eighth magnetic member 3244 are arranged perpendicular to the thickness of the speaker 30. The polarities of the opposing ends of the fifth magnetic member 3241 and the sixth magnetic member 3242 are opposite, forming a third sub-magnetic gap 3203b between the fifth magnetic member 3241 and the sixth magnetic member 3242. The polarities of the opposing ends of the seventh magnetic member 3243 and the eighth magnetic member 3244 are opposite, forming a fourth sub-magnetic gap 3204b between the seventh magnetic member 3243 and the eighth magnetic member 3244. The structure of the magnetic circuit assembly 32 in this embodiment is relatively simple, and the manufacturing cost of the speaker 30 is relatively low.

[0259] It should be noted that all the above drawings are for illustrative purposes only and do not represent the actual size of the product. Furthermore, the dimensional ratios between the components in the drawings are not intended to limit the actual product of the present application.

[0260] The above are only some of the embodiments of this application, and the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A loudspeaker (30), characterized in that: include: A housing (31) having an inner cavity (311); A magnetic circuit component (32) is located in the inner cavity (311) and fixedly connected to the housing (31), and the magnetic circuit component (32) is provided with a magnetic gap (320); A first diaphragm (331) and a second diaphragm (332) are respectively located on opposite sides of the magnetic circuit assembly (32), and the periphery of the first diaphragm (331) and the periphery of the second diaphragm (332) are both fixedly connected to the housing (31); a voice coil (34) located between the first diaphragm (331) and the second diaphragm (332) and fixedly connected to the first diaphragm (331) and the second diaphragm (332), wherein the voice coil (34) is at least partially located in the magnetic gap (320); and A first adjusting member (351) and a second adjusting member (352), wherein the first adjusting member (351) and the second adjusting member (352) are respectively located on opposite sides of the magnetic circuit assembly (32); in the thickness direction of the loudspeaker (30), the first adjusting member (351) and the second adjusting member (352) are at least partially opposite to the magnetic gap (320); the first adjusting member (351) is fixed to the first diaphragm (331) and / or the voice coil (34); the second adjusting member (352) is fixed to the second diaphragm (332) and / or the voice coil (34); wherein the first adjusting member (351) and the second adjusting member (352) are both magnetic members.

2. The loudspeaker (30) according to claim 1, characterized in that The first adjusting member (351) is located between the first diaphragm (331) and the voice coil (34), and fixedly connects the first diaphragm (331) and the voice coil (34); The second adjusting member (352) is located between the second diaphragm (332) and the voice coil (34), and fixedly connects the second diaphragm (332) and the voice coil (34).

3. The loudspeaker (30) according to claim 1 or 2, characterized in that The first adjusting member (351) and / or the second adjusting member (352) are made of soft iron.

4. The loudspeaker (30) according to any one of claims 1 to 3, characterized in that The magnetic gap (320) comprises a first sub-magnetic gap (3201) and a second sub-magnetic gap (3202) arranged at intervals, the first sub-magnetic gap (3201) and the second sub-magnetic gap (3202) being arranged in the thickness direction of the loudspeaker (30), and the magnetic field direction of the first sub-magnetic gap (3201) is opposite to the magnetic field direction of the second sub-magnetic gap (3202); The voice coil (34) includes a first side portion (341) and a second side portion (342) that are arranged opposite to and spaced apart from each other, wherein the first side portion (341) is fixedly connected to the first diaphragm (331) and is at least partially located in the first sub-magnetic gap (3201), and the second side portion (342) is fixedly connected to the second diaphragm (332) and is at least partially located in the second sub-magnetic gap (3202).

5. The loudspeaker (30) according to claim 4, characterized in that The magnetic circuit component (32) comprises a first magnetic component (321) and a second magnetic component (322), wherein the first magnetic component (321) and the second magnetic component (322) are arranged along the thickness direction of the speaker (30); The first magnetic component (321) comprises a first magnetic member (3211) and a second magnetic member (3212) arranged at intervals, the arrangement direction of the first magnetic member (3211) and the second magnetic member (3212) being perpendicular to the thickness direction of the loudspeaker (30), the polarities of the opposite ends of the first magnetic member (3211) and the second magnetic member (3212) being opposite, and the first sub-magnetic gap (3201) being formed between the first magnetic member (3211) and the second magnetic member (3212); The second magnetic component (322) includes a third magnetic member (3221) and a fourth magnetic member (3222) arranged at intervals, the arrangement direction of the third magnetic member (3221) and the fourth magnetic member (3222) is perpendicular to the thickness direction of the speaker (30), the polarities of the opposite ends of the third magnetic member (3221) and the fourth magnetic member (3222) are opposite, and the second sub-magnetic gap (3202) is formed between the third magnetic member (3221) and the fourth magnetic member (3222).

6. The loudspeaker (30) according to claim 4, characterized in that The magnetic circuit assembly (32) includes a first magnet (3251), a second magnet (3252), a first magnetic conductive member (3261), a second magnetic conductive member (3262), a third magnetic conductive member (3271), and a fourth magnetic conductive member (3272); The first magnet (3251) and the second magnet (3252) are arranged at intervals, and the arrangement direction is perpendicular to the thickness direction of the speaker (30); the polarization directions of the first magnet (3251) and the second magnet (3252) are opposite and are both parallel to the thickness direction of the speaker (30); The first magnetic conductive member (3261) is fixed to the side of the first magnet (3251) facing the first diaphragm (331), the second magnetic conductive member (3262) is fixed to the side of the second magnet (3252) facing the first diaphragm (331), and the first sub-magnetic gap (3201) is located between the first magnetic conductive member (3261) and the second magnetic conductive member (3262); The third magnetic conductive member (3271) is fixed to the side of the first magnet (3251) facing the second diaphragm (332), the fourth magnetic conductive member (3272) is fixed to the side of the second magnet (3252) facing the second diaphragm (332), and the second sub-magnetic gap (3202) is located between the third magnetic conductive member (3271) and the fourth magnetic conductive member (3272).

7. The loudspeaker (30) according to any one of claims 4 to 6, characterized in that There are a plurality of voice coils (34), the arrangement direction of the plurality of voice coils (34) is parallel to the length direction of the speaker (30), the length direction of the speaker (30) is perpendicular to the thickness direction of the speaker (30), and the plurality of voice coils (34) are at least partially located in the same magnetic gap (320); or, There are multiple magnetic gaps (320), and the multiple magnetic gaps (320) are arranged at intervals in the width direction of the speaker (30), and the width direction of the speaker (30) is perpendicular to the thickness direction of the speaker (30). There are multiple voice coils (34), and the arrangement direction of the multiple voice coils (34) is parallel to the width direction of the speaker (30), and the multiple voice coils (34) are respectively arranged corresponding to different magnetic gaps (320).

8. The loudspeaker (30) according to any one of claims 1 to 3, characterized in that The magnetic gap (320) comprises a first sub-magnetic gap (3201a), a second sub-magnetic gap (3202a), a third sub-magnetic gap (3203b) and a fourth sub-magnetic gap (3204b) which are arranged at intervals; The arrangement directions of the first sub-magnetic gap (3201a) and the second sub-magnetic gap (3202a) are perpendicular to the thickness direction of the loudspeaker (30), and the magnetic field direction of the first sub-magnetic gap (3201a) is opposite to the magnetic field direction of the second sub-magnetic gap (3202a); the arrangement directions of the third sub-magnetic gap (3203b) and the fourth sub-magnetic gap (3204b) are perpendicular to the thickness direction of the loudspeaker (30), and the magnetic field direction of the third sub-magnetic gap (3203b) is opposite to the magnetic field direction of the fourth sub-magnetic gap (3204b); the arrangement directions of the first sub-magnetic gap (3201a) and the third sub-magnetic gap (3203b) are parallel to the thickness direction of the loudspeaker (30), and the arrangement directions of the second sub-magnetic gap (3202a) and the fourth sub-magnetic gap (3204b) are parallel to the thickness direction of the loudspeaker (30); The voice coil (34) includes a first sub-voice coil (34a) and a second sub-voice coil (34b), and the first sub-voice coil (34a) and the second sub-voice coil (34b) are arranged along the thickness direction of the speaker (30); the first sub-voice coil (34a) includes a first side portion (341a) and a second side portion (342a) that are arranged opposite to each other, the first side portion (341a) is at least partially located in the first sub-magnetic gap (3201a), and the second side portion (342a) is at least partially located in the second sub-magnetic gap (3202a); the second sub-voice coil (34b) includes a third side portion (341b) and a fourth side portion (342b) that are arranged opposite to each other, the third side portion (341b) is at least partially located in the third sub-magnetic gap (3203b), and the fourth side portion (342b) is at least partially located in the fourth sub-magnetic gap (3204b).

9. The loudspeaker (30) according to claim 8, characterized in that The magnetic circuit component (32) comprises a first magnetic component (323) and a second magnetic component (324), wherein the first magnetic component (323) and the second magnetic component (324) are arranged along the thickness direction of the speaker (30); The first magnetic component (323) comprises a first magnetic member (3231) and a second magnetic member (3232) arranged at intervals, and a third magnetic member (3233) and a fourth magnetic member (3234) arranged at intervals; the arrangement direction of the first magnetic member (3231), the second magnetic member (3232), the third magnetic member (3233) and the fourth magnetic member (3234) is perpendicular to the thickness direction of the speaker (30); the polarities of the opposite ends of the first magnetic member (3231) and the second magnetic member (3232) are opposite; a first sub-magnetic gap (3201a) is formed between the first magnetic member (3231) and the second magnetic member (3232); the polarities of the opposite ends of the third magnetic member (3233) and the fourth magnetic member (3234) are opposite; a second sub-magnetic gap (3202a) is formed between the third magnetic member (3233) and the fourth magnetic member (3234); The second magnetic component (324) includes a fifth magnetic member (3241) and a sixth magnetic member (3242) arranged at intervals, and a seventh magnetic member (3243) and an eighth magnetic member (3244) arranged at intervals. The arrangement direction of the fifth magnetic member (3241), the sixth magnetic member (3242), the seventh magnetic member (3243) and the eighth magnetic member (3244) is perpendicular to the thickness direction of the speaker (30). The polarities of the opposite ends of the fifth magnetic member (3241) and the sixth magnetic member (3242) are opposite. The third sub-magnetic gap (3203b) is formed between the fifth magnetic member (3241) and the sixth magnetic member (3242). The polarities of the opposite ends of the seventh magnetic member (3243) and the eighth magnetic member (3244) are opposite. The fourth sub-magnetic gap (3204b) is formed between the seventh magnetic member (3243) and the eighth magnetic member (3244).

10. The loudspeaker (30) according to claim 8, characterized in that The magnetic circuit assembly (32) includes a first magnet (3251), a second magnet (3252), a third magnet (3253), a first magnetic conductive member (3281), a second magnetic conductive member (3282), a third magnetic conductive member (3283), a fourth magnetic conductive member (3291), a fifth magnetic conductive member (3292), and a sixth magnetic conductive member (3293); The first magnet (3251), the second magnet (3252) and the third magnet (3253) are arranged at intervals, and the arrangement direction is perpendicular to the thickness direction of the speaker (30); the polarization directions of the first magnet (3251) and the second magnet (3252) are opposite and parallel to the thickness direction of the speaker (30); the polarization directions of the second magnet (3252) and the third magnet (3253) are opposite and parallel to the thickness direction of the speaker (30); The first magnetic conductive member (3281) is fixed to the side of the first magnet (3251) facing the first diaphragm (331), the second magnetic conductive member (3282) is fixed to the side of the second magnet (3252) facing the first diaphragm (331), the third magnetic conductive member (3283) is fixed to the side of the third magnet (3253) facing the first diaphragm (331), the first sub-magnetic gap (3201a) is located between the first magnetic conductive member (3281) and the second magnetic conductive member (3282), and the second sub-magnetic gap (3202a) is located between the second magnetic conductive member (3282) and the third magnetic conductive member (3283); The fourth magnetic conductive member (3291) is fixed to the side of the first magnet (3251) facing the second diaphragm (332), the fifth magnetic conductive member (3292) is fixed to the side of the second magnet (3252) facing the second diaphragm (332), the sixth magnetic conductive member (3293) is fixed to the side of the third magnet (3253) facing the second diaphragm (332), the third sub-magnetic gap (3203b) is located between the fourth magnetic conductive member (3291) and the fifth magnetic conductive member (3292), and the fourth sub-magnetic gap (3204b) is located between the fifth magnetic conductive member (3292) and the sixth magnetic conductive member (3293).

11. The loudspeaker (30) according to claim 8, characterized in that The loudspeaker (30) further comprises a bracket (343), wherein the bracket (343) is located between the first sub-voice coil (34a) and the second sub-voice coil (34b), and fixedly connects the first sub-voice coil (34a) and the second sub-voice coil (34b).

12. The loudspeaker (30) according to any one of claims 1 to 11, characterized in that The loudspeaker (30) further includes a first connecting member (361), the first connecting member (361) including a peripheral portion (3611) and a connecting portion (3612), the connecting portion (3612) being located on the inner side of the peripheral portion (3611) and connecting the peripheral portion (3611), the peripheral portion (3611) connecting the housing (31) and the first diaphragm (331), and the connecting portion (3612) connecting the first diaphragm (331) and the voice coil (34).

13. The loudspeaker (30) according to any one of claims 1 to 12, characterized in that The first diaphragm (331) and the second diaphragm (332) are symmetrically arranged relative to the magnetic circuit component (32), and the first adjusting member (351) and the second adjusting member (352) are symmetrically arranged relative to the magnetic circuit component (32).

14. The loudspeaker (30) according to any one of claims 1 to 13, characterized in that There are multiple magnetic gaps (320), and the magnetic gaps (320) directly facing the first adjusting member (351) and / or the second adjusting member (352) are arranged with the voice coil (34) or are not arranged with the voice coil (34).

15. A loudspeaker (30), characterized in that include: A housing (31) having an inner cavity (311); a magnetic circuit component (32) located in the inner cavity (311) and fixedly connected to the housing (31), the magnetic circuit component (32) being provided with a first magnetic gap (3205) and a second magnetic gap (3206) arranged at intervals, the arrangement direction of the first magnetic gap (3205) and the second magnetic gap (3206) being parallel to the thickness direction of the speaker (30); A first diaphragm (331) and a second diaphragm (332) are respectively located on opposite sides of the magnetic circuit assembly (32), and the periphery of the first diaphragm (331) and the periphery of the second diaphragm (332) are both fixedly connected to the housing (31); a voice coil (34) located between the first diaphragm (331) and the second diaphragm (332), the voice coil (34) comprising a first portion (344) and a second portion (345) arranged at intervals, the first portion (344) and the second portion (345) being arranged in a thickness direction of the loudspeaker (30), the first portion (344) being fixedly connected to the first diaphragm (331) and at least partially located in the first magnetic gap (3205), and the second portion (345) being fixedly connected to the second diaphragm (332) and at least partially located in the second magnetic gap (3206); and An adjusting member (35) is located between the first portion (344) and the second portion (345), and fixedly connects the first portion (344) and the second portion (345). The adjusting member (35) is also located between the first magnetic gap (3205) and the second magnetic gap (3206). The adjusting member (35) is a magnetic member.

16. The loudspeaker (30) according to claim 15, characterized in that The direction of the magnetic field of the first magnetic gap (3205) is opposite to the direction of the magnetic field of the second magnetic gap (3206), and the winding plane of the voice coil (34) is parallel to the thickness direction of the speaker (30).

17. The loudspeaker (30) according to claim 16, characterized in that There are multiple voice coils (34), the arrangement direction of the multiple voice coils (34) is parallel to the length direction of the speaker (30), the length direction of the speaker (30) is perpendicular to the thickness direction of the speaker (30), and the multiple voice coils (34) are at least partially located in the same magnetic gap (320); or, There are a plurality of magnetic gaps (320), and the plurality of magnetic gaps (320) are arranged at intervals in the width direction of the speaker (30), and the width direction of the speaker (30) is perpendicular to the thickness direction of the speaker (30). There are a plurality of voice coils (34), and the arrangement direction of the plurality of voice coils (34) is parallel to the width direction of the speaker (30), and the plurality of voice coils (34) are at least partially located in the plurality of magnetic gaps (320) in a one-to-one correspondence.

18. The loudspeaker (30) according to claim 15, characterized in that The first magnetic gap (3205) comprises a first sub-magnetic gap (3205a) and a second sub-magnetic gap (3205b) arranged at intervals, the arrangement direction of the first sub-magnetic gap (3205a) and the second sub-magnetic gap (3205b) is perpendicular to the thickness direction of the loudspeaker (30), and the magnetic field direction of the first sub-magnetic gap (3205a) is opposite to the magnetic field direction of the second sub-magnetic gap (3205b); The second magnetic gap (3206) comprises a third sub-magnetic gap (3206a) and a fourth sub-magnetic gap (3206b) arranged at intervals, the arrangement direction of the third sub-magnetic gap (3206a) and the fourth sub-magnetic gap (3206b) being perpendicular to the thickness direction of the loudspeaker (30), and the magnetic field direction of the third sub-magnetic gap (3206a) being opposite to the magnetic field direction of the fourth sub-magnetic gap (3206b); The first sub-magnetic gap (3205a) and the third sub-magnetic gap (3206a) are arranged at intervals, and the arrangement direction is parallel to the thickness direction of the speaker (30); the second sub-magnetic gap (3205b) and the fourth sub-magnetic gap (3206b) are arranged at intervals, and the arrangement direction is parallel to the thickness direction of the speaker (30); The first part (344) is a first sub-voice coil, and the second part (345) is a second sub-voice coil. The first sub-voice coil includes a first side portion (3441) and a second side portion (3442) relative to each other, the first side portion (3441) is at least partially located in the first sub-magnetic gap (3205a), and the second side portion (3442) is at least partially located in the second sub-magnetic gap (3205b); the second sub-voice coil includes a third side portion (3451) and a fourth side portion (3452) relative to each other, the third side portion (3451) is at least partially located in the third sub-magnetic gap (3206a), and the fourth side portion (3452) is at least partially located in the fourth sub-magnetic gap (3206b).

19. An electronic device, characterized in that: The invention comprises a housing and a loudspeaker (30) according to any one of claims 1 to 18, wherein the loudspeaker (30) is mounted on the housing.

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