Loudspeaker and earphone

Abstract

The utility model discloses a loudspeaker and an earphone. The loudspeaker comprises an annular support, a magnetic circuit assembly, a first vibration assembly and a second vibration assembly. The annular support is provided with a first end and a second end. The magnetic circuit assembly is arranged in the annular support. The first vibration assembly comprises a first vibrating diaphragm and a first voice coil, the edge of the first vibrating diaphragm is connected with the first end, and the first vibrating diaphragm, the annular support and the magnetic circuit assembly jointly define a first cavity; the second vibration assembly comprises a second vibrating diaphragm and a second voice coil, the edge of the second vibrating diaphragm is connected with the second end, and the first vibrating diaphragm, the annular support and the magnetic circuit assembly jointly define a second cavity; the annular support is provided with an air flow channel, an air vent communicated with the air flow channel is formed in the peripheral face of the annular support, and the first cavity and the second cavity are both communicated with the air vent. The diaphragm area of the loudspeaker and the vibration amplitude of the diaphragm can be increased, and the sound output by the loudspeaker can be increased.

Description

Technical Field

[0001] This application relates to the technical field of acoustic devices, and more particularly to a loudspeaker and headphones. Background Technology

[0002] A loudspeaker typically consists of a diaphragm, a voice coil, and a magnetic circuit assembly. The voice coil is connected to the diaphragm. When the voice coil is energized, it generates a magnetic field. The voice coil moves under the influence of the magnetic field of the magnetic circuit assembly, which in turn causes the diaphragm to vibrate and produce sound.

[0003] For smaller speakers, the diaphragm is usually smaller due to the limitations of the speaker's size, resulting in a smaller sound output. Utility Model Content

[0004] This application provides a loudspeaker and headphones that can increase the diaphragm area and vibration amplitude of the loudspeaker, thereby increasing the sound output of the loudspeaker.

[0005] In a first aspect, this application provides a loudspeaker, comprising:

[0006] A ring-shaped support has a first end and a second end arranged along a first direction;

[0007] A magnetic circuit assembly is disposed within the annular bracket and connected to the inner sidewall of the annular bracket. A first magnetic gap is formed on the side of the magnetic circuit assembly near the first end, and a second magnetic gap is formed on the side of the magnetic circuit assembly near the second end.

[0008] The first vibration component includes a first diaphragm and a first voice coil. The edge of the first diaphragm is connected to the first end. The first diaphragm, together with the annular support and the magnetic circuit component, forms a first cavity. One end of the first voice coil is inserted into the first magnetic gap, and the other end is connected to the first diaphragm.

[0009] The second vibration component includes a second diaphragm and a second voice coil. The edge of the second diaphragm is connected to the second end. The second diaphragm, together with the annular support and the magnetic circuit component, forms a second cavity. One end of the second voice coil is inserted into the second magnetic gap, and the other end is connected to the second diaphragm. The vibration direction of the second diaphragm is opposite to that of the first diaphragm.

[0010] The annular support has an airflow channel and an air vent that communicates with the airflow channel. Both the first cavity and the second cavity are connected to the airflow channel.

[0011] Secondly, this application also provides an earphone, including a housing and a speaker, wherein the speaker is disposed within the housing.

[0012] The beneficial effects of this application are as follows: By setting two diaphragms, the first diaphragm and the second diaphragm, the diaphragm area in the speaker can be increased without changing the circumferential dimensions of the speaker, thereby increasing the sound output of the speaker; in addition, the first cavity and the second cavity share a common airflow channel and vent for air intake and exhaust, realizing rapid exchange with the outside air, eliminating the need to open separate gas exchange channels for the first cavity and the second cavity, reducing the number of components inside the speaker, thereby reducing the overall volume of the speaker while increasing the diaphragm area. Furthermore, the simultaneous air intake and exhaust of the first cavity and the second cavity ensures that the two diaphragms have the same airflow resistance, increasing the gas flow velocity in the airflow channel, thereby increasing the gas flow velocity in the first cavity and the second cavity, resulting in a larger vibration amplitude for the first diaphragm and the second diaphragm, which in turn produces a louder sound, allowing the speaker to output a louder sound and better low-frequency sound. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the speaker structure in one embodiment of this application;

[0015] Figure 2 This is a partial structural diagram of a speaker in one embodiment of this application;

[0016] Figure 3 This is an exploded view of the speaker components in one embodiment of this application;

[0017] Figure 4 This is an exploded view of the components of a magnetic circuit assembly in one embodiment of this application;

[0018] Figure 5 This is a schematic diagram of the speaker structure after removing the first vibration component and the second vibration component in one embodiment of this application;

[0019] Figure 6 This is a schematic diagram of the magnetic circuit assembly and part of the support structure in one embodiment of this application;

[0020] Figure 7 This is a schematic diagram of the speaker structure in another embodiment of this application.

[0021] Figure label:

[0022] 10. Ring-shaped bracket; 11. First end; 12. Second end; 13. Airflow channel; 14. Vent; 15. Main body; 16. Channel structure; 161. First air inlet; 162. Second air inlet; 163. Insertion interface; 164. Sub-channel; 20. Magnetic circuit assembly; 21. First magnetic gap; 22. Second magnetic gap; 23. First magnetic conductor; 231. Protrusion; 232. Support; 233. Receiving groove ; 234, Flow port; 24, First magnet; 25, Second magnetic conductor; 26, Second magnet; 27, Third magnetic conductor; 30, First vibration assembly; 31, First diaphragm; 32, First voice coil; 40, Second vibration assembly; 41, Second diaphragm; 42, Second voice coil; 51, First cavity; 52, Second cavity; 61, First cover; 62, Second cover; 63, First sound outlet; 64, Second sound outlet. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0024] A loudspeaker typically consists of a diaphragm, a voice coil, and a magnetic circuit assembly. The voice coil is connected to the diaphragm. When the voice coil is energized, it generates a magnetic field. The voice coil moves under the influence of the magnetic field of the magnetic circuit assembly, which in turn causes the diaphragm to vibrate and produce sound. The volume of sound that a loudspeaker can output is related to factors such as the diaphragm area and the amplitude of diaphragm vibration.

[0025] For smaller speakers, such as those used in headphones, headphones are popular among consumers due to their comfort and the fact that they don't need to be inserted into the ear. To provide users with better wearing comfort, headphones are usually made smaller, which in turn leads to smaller speakers. Because the speakers are smaller, the diaphragms are also smaller. Since the diaphragm area is directly proportional to the volume of the speaker output, the output volume is lower. In addition, the small size of the headphones means that they do not fit tightly enough in the ear canal, which can lead to low-frequency leakage, resulting in even lower sound for the user.

[0026] To address the aforementioned problems, this application provides a speaker and headphones to solve them.

[0027] Firstly, this application provides a loudspeaker, such as Figures 1 to 3 As shown, the loudspeaker includes an annular support 10, a magnetic circuit assembly 20, a first vibration assembly 30, and a second vibration assembly 40. The overall shape of the loudspeaker can be circular, elliptical, rectangular, square, or other shapes. This application does not impose specific limitations on the shape of the loudspeaker.

[0028] The annular support 10 has a first end 11 and a second end 12 arranged along the first direction XX. The annular support 10 can be circular, square, or other annular shapes. When the annular support 10 is circular, the first direction XX is the axial direction of the annular support 10. The magnetic circuit assembly 20 is disposed inside the annular support 10 and connected to the inner wall of the annular support 10. A first magnetic gap 21 is formed on the side of the magnetic circuit assembly 20 near the first end 11, and a second magnetic gap 22 is formed on the side of the magnetic circuit assembly 20 near the second end 12. The first vibration assembly 30 includes a first diaphragm 31 and a first voice coil 32. The axial direction of the first diaphragm 31 is parallel to the first direction XX, and the edge of the first diaphragm 31 is connected to the first end 11. The first diaphragm 31 and the annular support... The frame 10 and the magnetic circuit assembly 20 together form a first cavity 51. One end of the first voice coil 32 is inserted into the first magnetic gap 21, and the other end is connected to the first diaphragm 31. The second vibration assembly 40 includes a second diaphragm 41 and a second voice coil 42. The axis of the second diaphragm 41 is parallel to the first direction XX. The edge of the second diaphragm 41 is connected to the second end 12. The second diaphragm 41, the annular frame 10, and the magnetic circuit assembly 20 together form a second cavity 52. ​​One end of the second voice coil 42 is inserted into the second magnetic gap 22, and the other end is connected to the second diaphragm 41. The vibration direction of the second diaphragm 41 is opposite to the vibration direction of the first diaphragm 31, meaning that at the same time, the vibration direction of the second diaphragm 41 is opposite to the vibration direction of the first diaphragm 31.

[0029] Understandably, the first cavity 51 and the second cavity 52 are separated by the magnetic circuit assembly 20. The first cavity 51 provides vibration space for the first diaphragm 31, and the second cavity 52 provides vibration space for the second diaphragm 41. The first diaphragm 31 and the second diaphragm 41 can be mounted on the bracket by adhesive bonding. The first magnetic gap 21 and the second magnetic gap 22 open in opposite directions. The first magnetic gap 21 provides movement space for the first voice coil 32, and the second magnetic gap 22 provides movement space for the second voice coil 42. The first voice coil 32 is connected to the first diaphragm 31 by adhesive bonding. The second voice coil 42 can be connected to the second diaphragm 41 by adhesive bonding. When the first voice coil 32 and the second voice coil 42 are energized, they generate a magnetic field, causing the first voice coil 32 and the second voice coil 42 to move along the first direction XX under the action of the magnetic field of the magnetic circuit assembly 20, thereby driving the first diaphragm 31 and the second diaphragm 41 to vibrate and produce sound along the first direction XX respectively. In this application, by setting the first diaphragm 31 and the second diaphragm 41, the diaphragm area in the speaker can be increased without changing the circumferential size of the speaker, thereby increasing the sound output of the speaker.

[0030] It should also be noted that the vibration direction of the second diaphragm 41 can be made opposite to that of the first diaphragm 31 by designing the magnetic field of the magnetic circuit assembly 20, as well as by designing the current flow direction and magnitude in the first voice coil 32 and the second voice coil 42. For example, using... Figure 1 Taking the perspective shown as an example, when the first diaphragm 31 vibrates upward, the second diaphragm 41 vibrates downward, and when the first diaphragm 31 vibrates downward, the second diaphragm 41 vibrates upward. This allows the vibration forces generated by the first diaphragm 31 and the second diaphragm 41 on the entire speaker to cancel each other out, thereby reducing or even eliminating the overall vibration caused by the vibration of the first diaphragm 31 and the second diaphragm 41, which can improve the user experience.

[0031] Specifically, the annular support 10 has an airflow channel 13, and the annular support 10 is provided with an air vent 14 that communicates with the airflow channel 13. The first cavity 51 and the second cavity 52 are both connected to the airflow channel 13.

[0032] It should be noted that the vent 14 can be located on the outer surface of the annular support 10, and the airflow channel 13 communicates with the atmosphere through the vent 14, allowing the first cavity 51 and the second cavity 52 to communicate with the atmosphere. This enables the first cavity 51 and the second cavity 52 to exchange air with the outside air when the first diaphragm 31 and the second diaphragm 41 vibrate. See also Figure 2 From the perspective shown, when the first diaphragm 31 vibrates downward, the second diaphragm 41 vibrates upward. The first diaphragm 31 will discharge the air in the first cavity 51 through the airflow channel 13 and the vent 14, and the second diaphragm 41 will discharge the air in the second cavity 52 through the airflow channel 13 and the vent 14. When the first diaphragm 31 vibrates upward, the second diaphragm 41 vibrates downward. The first diaphragm 31 will draw air from the atmosphere into the first cavity 51 through the vent 14 and the airflow channel 13, and the second diaphragm 41 will draw air from the atmosphere into the second cavity 52 through the vent 14 and the airflow channel 13.

[0033] Understandably, in this application, the first cavity 51 and the second cavity 52 share a single airflow channel 13 and vent 14 for air intake and exhaust, enabling rapid exchange with the outside air. This eliminates the need for separate gas exchange channels for the first cavity 51 and the second cavity 52, reducing the number of components inside the speaker. Consequently, the overall volume of the speaker can be reduced while increasing the diaphragm area. Furthermore, the simultaneous intake and exhaust of the first cavity 51 and the second cavity 52 ensures that the two diaphragms 31 and 41 have the same airflow resistance, increasing the gas velocity within the airflow channel 13. This, in turn, increases the gas velocity within the first cavity 51 and the second cavity 52, resulting in a larger vibration amplitude for the diaphragms 31 and 41, thereby producing a louder sound. Ultimately, this allows the speaker to output a louder sound and better low-frequency response.

[0034] In some embodiments, when the first voice coil 32 and the second voice coil 42 are energized, the driving force provided by the magnetic circuit assembly 20 to the first voice coil 32 can be the same in magnitude and opposite in direction to the driving force provided by the magnetic circuit assembly 20 to the second voice coil 42. This results in the first diaphragm 31 and the second diaphragm 41 vibrating in opposite directions with the same amplitude, thereby canceling out the vibration forces generated by the first diaphragm 31 and the second diaphragm 41 on the entire speaker. The first voice coil 32 and the second voice coil 42 can be connected in parallel or in series; this application does not impose specific limitations.

[0035] In some embodiments, the diameter of the first diaphragm 31 is D1, and the diameter of the second diaphragm 41 is D2, where 0.1*D2≤D1≤10*D2. This prevents the difference between the dimensions of the first diaphragm 31 and the second diaphragm 41 from being too large, ensuring that the vibration forces generated by the first diaphragm 31 and the second diaphragm 41 on the entire speaker can effectively cancel each other out. D1 can be equal to D2, or it can be 0.1 times, 0.5 times, 2 times, 5 times, 10 times, or other multiples of D2.

[0036] In some embodiments, the inner diameter of the first voice coil 32 is D3, and the inner diameter of the second voice coil 42 is D4, where 0.1*D4≤D3≤10*D4. The inner diameter of the first voice coil 32 refers to the inner diameter of its inner ring, and the inner diameter of the second voice coil 42 refers to the inner diameter of its inner ring. This prevents excessive differences in the dimensions of the first and second voice coils, thus preventing excessive differences in the driving force provided by the magnetic circuit assembly 20 to the first and second voice coils 32. Consequently, the vibration forces generated by the first and second diaphragms 31 on the entire speaker can effectively cancel each other out. D3 can be equal to D4, or it can be 0.1, 0.5, 2, 5, 10, or other multiples of D4.

[0037] See also Figures 1 to 3 As shown, in some embodiments of this application, the annular support 10 includes a main body 15 and a channel structure 16; the main body 15 is disposed around the outer periphery of the magnetic circuit assembly 20; the channel structure 16 is located between the main body 15 and the magnetic circuit assembly 20, and is connected to the main body 15 and the magnetic circuit assembly 20; an airflow channel 13 is disposed in the channel structure 16; a first air guide port 161 is disposed on the side of the channel structure 16 near the first cavity 51, the first air guide port 161 connects the first cavity 51 and the airflow channel 13; a second air guide port 162 is disposed on the side of the channel structure 16 near the second cavity 52, the second air guide port 162 connects the second cavity 52 and the airflow channel 13. It is understood that the airflow channel 13 is formed in the channel structure 16. The first air guide port 161 faces the first cavity 51, which can reduce the distance between the first cavity 51 and the airflow channel 13, thereby shortening the airflow path and allowing the first cavity 51 to exchange gases quickly with the airflow channel 13 through the first air guide port 161. The second air guide port 162 faces the second cavity 52, which can reduce the distance between the second cavity 52 and the airflow channel 13, allowing the second cavity 52 to exchange gases quickly with the airflow channel 13 through the second air guide port 162.

[0038] In some embodiments, the annular support 10 and the airflow channel 13 extend around the periphery of the magnetic circuit assembly 20. One or more first air inlets 161 may be provided. When multiple first air inlets 161 are provided, they are arranged at intervals around the periphery of the magnetic circuit assembly 20, allowing the first cavity 51 to exchange gas with the airflow channel 13 from various directions. This helps reduce airflow resistance and increase the gas exchange speed. The number of first air inlets 161 can be greater than or equal to one and less than or equal to 20. One or more second air inlets 162 may be provided. When multiple second air inlets 162 are provided, they are arranged at intervals around the periphery of the magnetic circuit assembly 20. The number of second air inlets 162 can be greater than or equal to one and less than or equal to 20. Specifically, the channel structure 16 includes multiple sub-channels 164 arranged at intervals along the outer periphery of the magnetic circuit assembly 20. A first air inlet 161 and a second air inlet 162 are defined between two adjacent sub-channels 164. More specifically, the sub-channel 164 includes upper and lower guide vanes spaced apart along a first direction, with the upper and lower guide vanes defining a portion of the airflow channel 13. It should be noted that the portions defined between the upper and lower guide vanes of the multiple sub-channels 164 are interconnected to form the airflow channel 13. A first air inlet 161 is formed between the upper guide vanes of two adjacent sub-channels 164, and a second air inlet 162 is formed between the lower guide vanes of two adjacent sub-channels 164.

[0039] In some embodiments, on a plane perpendicular to the first direction XX, the projected area of ​​the first air guide 161 is s1, the projected area of ​​the second air guide 162 is s2, and the projected area of ​​the channel structure 16 is S; wherein 0.01*S≤s1≤0.5*S, and / or 0.01*S≤s2≤0.5*S, so that the first air guide 161 and the second air guide 162 have suitable opening areas, ensuring that the first cavity 51 and the second cavity 52 can quickly exchange gas with the airflow channel 13, while preventing the first air guide 161 and the second air guide 162 from occupying a large area, thus preventing the airflow channel 13 from playing a good guiding role for the airflow. Wherein, s1 can be 0.01 times, 0.1 times, 0.2 times, 0.3 times, 0.5 times, or other multiples of S, and s2 can be 0.01 times, 0.1 times, 0.2 times, 0.3 times, 0.5 times, or other multiples of S.

[0040] In some embodiments, the channel structure 16 has a connector 163 at one end near the magnetic circuit assembly 20. A portion of the magnetic circuit assembly 20 extends into the airflow channel 13 through the connector 163, and the end of the channel structure 16 near the magnetic circuit assembly 20 is sealed to the magnetic circuit assembly 20 to seal the connector 163. It is understood that by providing the connector 163, the weight of the channel structure 16 can be reduced, thereby reducing the weight of the speaker. The extension of the magnetic circuit assembly 20 into the airflow channel 13 allows the channel structure 16 to provide mounting positioning for the magnetic circuit assembly 20, preventing it from shaking during use. Furthermore, the sealing of the connector 163 by the magnetic circuit assembly 20 prevents noise from generated by gas entering and exiting the airflow channel 13 through the connector 163. The connector 163 can extend circumferentially around the magnetic circuit assembly 20 and is formed between the upper and lower guide plates.

[0041] like Figures 2 to 4 As shown, in some embodiments of this application, the magnetic circuit assembly 20 includes a first magnetic conductor 23, a first magnet 24, a second magnetic conductor 25, a second magnet 26, and a third magnetic conductor 27; the first magnetic conductor 23 includes a protrusion 231 and a support 232, the protrusion 231 protrudes toward the second cavity 52 relative to the support 232, and a receiving groove 233 is provided on the side of the protrusion 231 near the first cavity 51; the support 232 extends around the periphery of the protrusion 231 and is adjacent to the protrusion. The part 231 is connected to the annular bracket 10; the first magnet 24 is located in the receiving groove 233, and a first magnetic gap 21 is formed between the first magnet 24 and the peripheral side wall of the receiving groove 233; the second magnetic conductor 25 is located on the side of the first magnet 24 away from the bottom of the receiving groove 233; the second magnet 26 is arranged around the outer periphery of the protrusion 231, and a second magnetic gap 22 is formed between the second magnet 26 and the protrusion 231; the third magnetic conductor 27 is located on the side of the second magnet 26 away from the support part 232.

[0042] Understandably, the first magnet 24 provides driving force for the first voice coil 32, and the second magnet 26 provides driving force for the second voice coil 42. By forming a first magnetic gap 21 and a second magnetic gap 22 with the first magnet 24 and the second magnet 26 respectively using a first magnetic conductor 23, the number of components in the magnetic circuit assembly 20 can be reduced, thereby reducing the overall size of the speaker. Furthermore, by forming a receiving groove 233 on the first magnetic conductor 23 to accommodate the first magnet 24, the thickness of the magnetic circuit assembly 20 in the first direction XX can be reduced, thereby reducing the space occupied by the magnetic circuit assembly 20 and thus reducing the size of the speaker. The receiving groove 233 can be formed during the formation of the protrusion 231, for example, by die-casting to make a portion of the first magnetic conductor 23 protrude to form the protrusion 231, while simultaneously forming the receiving groove 233.

[0043] Among them, the first magnetic conductive element 23, the second magnetic conductive element 25 and the third magnetic conductive element 27 all have the function of concentrating the magnetic field. The first magnetic conductive element 23 and the second magnetic conductive element 25 can concentrate the magnetic field generated by the first magnet 24 between the first magnetic conductive element 23 and the second magnetic conductive element 25. The first magnetic conductive element 23 and the third magnetic conductive element 27 can concentrate the magnetic field generated by the second magnet 26 between the first magnetic conductive element 23 and the third magnetic conductive element 27. The first magnetic conductive element 23, the second magnetic conductive element 25 and the third magnetic conductive element 27 can be made of low carbon steel.

[0044] like Figures 4 to 6 As shown, in some embodiments, both the protrusion 231 and the support 232 are provided with a flow channel 234. The flow channel 234 extends along the first direction XX to penetrate the protrusion 231 and the support 232. The first magnetic gap 21 and the second magnetic gap 22 are both connected to the airflow channel 13 through the flow channel 234. It can be understood that when the first diaphragm 31 and the second diaphragm 41 vibrate, the first magnetic gap 21 and the second magnetic gap 22 can also quickly exchange gas with the outside air through the flow channel 234 and the airflow channel 13, thereby reducing the gas resistance encountered by the first voice coil 32 and the second voice coil 42 when they move, and further reducing the gas resistance encountered by the first diaphragm 31 and the second diaphragm 41 when they vibrate, so that the first diaphragm 31 and the second diaphragm 41 have a larger vibration amplitude, thereby producing a louder sound, so that the speaker can output a louder sound and a better low-frequency sound.

[0045] See Figure 2 As shown, taking the downward movement of the first diaphragm 31 and the upward movement of the second diaphragm 41 as an example, Figure 2 The small arrows in the solid line indicate the airflow paths in the first cavity 51 and the second cavity 52. Figure 2The small dashed arrows indicate the airflow paths in the first magnetic gap 21 and the second magnetic gap 22. Gas in the first cavity 51 can sequentially pass through the first air inlet 161, the airflow channel 13, and the vent 14. Gas in the first magnetic gap 21 can sequentially pass through the guide port 234, the first air inlet 161, the airflow channel 13, and the vent 14. Gas in the second cavity 52 can sequentially pass through the second air inlet 162, the airflow channel 13, and the vent 14. Gas in the second magnetic gap 22 can sequentially pass through the guide port 234, the first air inlet 161, the airflow channel 13, and the vent 14. When the first diaphragm 31 moves upward, the airflow paths in the first cavity 51, the second cavity 52, the first magnetic gap 21, and the second magnetic gap 22 are the same as the airflow paths when the first diaphragm 31 moves downward, but in the opposite direction.

[0046] In some embodiments, the guide port 234 on the support 232 extends to the first air inlet 161 and communicates with the first air inlet 161, so that the first magnetic gap 21 and the second magnetic gap 22 are connected to the airflow channel 13, so that the guide port 234 can be directly connected to the first air inlet 161, reducing the distance between the guide port 234 and the first air inlet 161, thereby shortening the airflow path, so that the first magnetic gap 21 and the second magnetic gap 22 can exchange gases with the outside air more quickly.

[0047] The guide port 234 can be provided in one or more ways. The number of guide ports 234 can be the same as the number of first air inlets 161, and the guide ports 234 correspond one-to-one with the first air inlets 161. When multiple guide ports 234 are provided, the multiple guide ports 234 are arranged at intervals around the periphery of the first magnetic conductor 23, so that the first magnetic gap 21 and the second magnetic gap 22 can exchange gas with the airflow channel 13 from all directions, which can increase the gas exchange speed.

[0048] In some embodiments, the guide port 234 may extend from the outer edge of the first magnet 24 to the first air inlet 161 to increase the length of the guide port 234, allowing the first magnetic gap 21 and the second magnetic gap 22 to exchange gases with the outside air more quickly. The width of the guide port 234 is greater than or equal to 0.2 mm and less than or equal to 5 mm; the width of the guide port 234 can be 0.2 mm, 1 mm, 3 mm, 5 mm, or other values.

[0049] In some embodiments, the magnetic pole of the end of the first magnet 24 near the first magnetic conductor 23 is the same as the magnetic pole of the end of the second magnet 26 near the first magnetic conductor 23. According to the principle of magnetic attraction, the magnetic field always points from the N pole to the S pole. When the end of the first magnet 24 near the first magnetic conductor 23 is the S pole, the end of the first magnet 24 away from the first magnetic conductor 23 is the N pole. Similarly, the end of the second magnet 26 near the first magnetic conductor 23 is also the S pole, and the end of the second magnet 26 away from the first magnetic conductor 23 is also the N pole. At this time, the magnetic fields of both the first magnet 24 and the second magnet 26 point from the end away from the first magnetic conductor 23 to the end near the first magnetic conductor 23. For the same reason, when the first magnet 24 is near the first magnetic conductor 23... When one end is the N pole, the end of the first magnet 24 away from the first magnetic conductor 23 is the S pole, and the end of the second magnet 26 close to the first magnetic conductor 23 is also the N pole, and the end of the second magnet 26 away from the first magnetic conductor 23 is also the S pole. At this time, the magnetic fields of the first magnet 24 and the second magnet 26 are both directed from the end close to the first magnetic conductor 23 to the end away from the first magnetic conductor 23, so that the magnetic collection requirements of the first magnet 24 and the second magnet 26 can be met through the first magnetic conductor 23. The magnetic conduction principle of the magnetic conductor has been disclosed in related technologies, and will not be elaborated here.

[0050] like Figure 7 As shown, in some embodiments, the loudspeaker further includes a first cover 61 and a second cover 62. The first cover 61 is disposed at the first end 11 of the annular bracket 10, connected to the annular bracket 10, and forming a first front cavity with the annular bracket 10. The first cover 61 is provided with a first sound outlet 63 communicating with the first front cavity, and the sound generated when the first diaphragm 31 vibrates can be transmitted through the first sound outlet 63. The second cover 62 is disposed at the second end 12 of the annular bracket 10, connected to the annular bracket 10, and forming a second front cavity with the annular bracket 10. The second cover 62 is provided with a second sound outlet 64 communicating with the second front cavity, and the sound generated when the second diaphragm 41 vibrates can be transmitted through the second sound outlet 64.

[0051] The orientation of the first sound outlet 63 and the orientation of the second sound outlet 64 may be the same or different, and the orientation of the first sound outlet 63 and the orientation of the second sound outlet 64 may be the same or different from the orientation of the vent 14.

[0052] Secondly, based on the aforementioned speaker, this application also provides an earphone, which includes a housing and a speaker as described in any of the above embodiments, the speaker being disposed within the housing.

[0053] It should be noted that the headphones can be open-back headphones. Open-back headphones include a power supply unit, a sound output unit, and a connection unit. The sound output unit is connected to the power supply unit through the connection unit, and the sound output unit includes a housing. The power supply unit is the part of the open-back headphones used to power the speaker. The power supply unit includes components such as a battery and a circuit board. The connection unit is used to realize the physical and electrical connection between the power supply unit and the sound output unit. The connection unit may include shape memory wire, conductive wire, and soft silicone, etc. The battery can be electrically connected to the speaker through the conductive wire.

[0054] Of course, in other embodiments, the headphones may also be in-ear headphones, over-ear headphones, earlobe headphones, neckband headphones, or other types of headphones.

[0055] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A loudspeaker, characterized by The application relates to a loudspeaker, which comprises the following parts: a ring-shaped support with a first end and a second end arranged along a first direction; a magnetic circuit assembly arranged in the ring-shaped support and connected with an inner side wall of the ring-shaped support, a first magnetic gap being formed on one side of the magnetic circuit assembly close to the first end, and a second magnetic gap being formed on one side of the magnetic circuit assembly close to the second end; a first vibration assembly comprising a first diaphragm and a first voice coil, the edge of the first diaphragm being connected with the first end, the first diaphragm being jointly enclosed with the ring-shaped support and the magnetic circuit assembly to form a first cavity, one end of the first voice coil being inserted into the first magnetic gap, and the other end of the first voice coil being connected with the first diaphragm; a second vibration assembly comprising a second diaphragm and a second voice coil, the edge of the second diaphragm being connected with the second end, the second diaphragm being jointly enclosed with the ring-shaped support and the magnetic circuit assembly to form a second cavity, one end of the second voice coil being inserted into the second magnetic gap, and the other end of the second voice coil being connected with the second diaphragm, the vibration direction of the second diaphragm being opposite to the vibration direction of the first diaphragm; wherein the ring-shaped support has an airflow channel, the ring-shaped support is provided with an air inlet communicating with the airflow channel, and the first cavity and the second cavity both communicate with the airflow channel.

2. The loudspeaker of claim 1, wherein, The ring-shaped support comprises: a main body arranged around the outer periphery of the magnetic circuit assembly; a channel structure between the main body and the magnetic circuit assembly and connected with the main body and the magnetic circuit assembly, the channel structure being provided with the airflow channel, the channel structure being provided with a first air guide opening on one side close to the first cavity, the first air guide opening communicating the first cavity with the airflow channel, and the channel structure being provided with a second air guide opening on one side close to the second cavity, the second air guide opening communicating the second cavity with the airflow channel.

3. The loudspeaker of claim 2, wherein, The channel structure comprises a plurality of sub-channels arranged at intervals along the outer periphery of the magnetic circuit assembly, and the first air guide opening and the second air guide opening are defined between two adjacent sub-channels.

4. The loudspeaker of claim 2, wherein, In a plane perpendicular to the first direction, the projection area of the first air guide opening is s1, the projection area of the second air guide opening is s2, and the projection area of the channel structure is S; wherein 0.01*S<=s1<=0.5*S and / or 0.01*S<=s2<=0.5*S.

5. The loudspeaker of claim 2, wherein, The channel structure is provided with a plug-in opening on one end close to the magnetic circuit assembly, part of the magnetic circuit assembly extends into the airflow channel through the plug-in opening, and one end of the channel structure close to the magnetic circuit assembly is sealingly connected with the magnetic circuit assembly.

6. The loudspeaker of claim 1, wherein, The magnetic circuit assembly comprises: a first magnetic conducting member comprising a protruding part and a supporting part, the protruding part protruding towards the second cavity relative to the supporting part, the protruding part being provided with a receiving groove on one side close to the first cavity, and the supporting part extending around the circumferential side of the protruding part and being connected with the protruding part and the ring-shaped support; a first magnet located in the receiving groove, the first magnet and the circumferential wall of the receiving groove forming the first magnetic gap; a second magnetic conducting member located on one side of the first magnet away from the bottom of the receiving groove. A second magnet is arranged around the outer periphery of the protruding portion, and a second magnetic gap is formed between the protruding portion and the second magnet; A third magnetic conducting member is arranged on the side of the second magnet away from the supporting portion.

7. The loudspeaker of claim 6, wherein, A flow conducting opening is arranged on the protruding portion and the supporting portion, and extends through the protruding portion and the supporting portion in the first direction, and the first magnetic gap and the second magnetic gap are communicated with the airflow channel through the flow conducting opening.

8. The loudspeaker of claim 7, wherein, The annular support comprises: A main body is arranged around the outer periphery of the magnetic circuit assembly; A channel structure is arranged between the main body and the magnetic circuit assembly, and is connected with the main body and the magnetic circuit assembly, and the airflow channel is arranged in the channel structure, and a first air guiding opening is arranged on the side of the channel structure close to the first cavity, and the first air guiding opening communicates the first cavity with the airflow channel, and a second air guiding opening is arranged on the side of the channel structure close to the second cavity, and the second air guiding opening communicates the second cavity with the airflow channel; The flow conducting opening on the supporting portion extends to the first air guiding opening and communicates with the first air guiding opening, so that the first magnetic gap and the second magnetic gap are communicated with the airflow channel.

9. The loudspeaker of claim 6, wherein, The magnetic pole of the end of the first magnet close to the first magnetic conducting member is the same as the magnetic pole of the end of the second magnet close to the first magnetic conducting member.

10. The loudspeaker of claim 1, wherein, The diameter of the first diaphragm is D1, and the diameter of the second diaphragm is D2, and 0.1*D2≤D1≤10*D2; and / or, The inner diameter of the first voice coil is D3, and the inner diameter of the second voice coil is D4, and 0.1*D4≤D3≤10*D4.

11. The loudspeaker of any one of claims 1-10, wherein, The loudspeaker further comprises: A first cover is arranged on the first end of the annular support, and the first cover is connected with the annular support and forms a first front cavity with the annular support, and a first sound outlet is arranged on the first cover and communicates with the first front cavity; A second cover is arranged on the second end of the annular support, and the second cover is connected with the annular support and forms a second front cavity with the annular support, and a second sound outlet is arranged on the second cover and communicates with the second front cavity.

12. An earphone, characterized by The loudspeaker comprises a shell and the loudspeaker as claimed in any one of claims 1 to 11, and the loudspeaker is arranged in the shell.

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