Loudspeaker and earphone

Abstract

The invention discloses a loudspeaker and an earphone, and belongs to the technical field of audio. The earphone comprises a loudspeaker, and the loudspeaker comprises a first magnet, a second magnet, a frame, a first voice coil, a first vibrating diaphragm, a second voice coil and a second vibrating diaphragm. The first magnet is arranged around the periphery of the second magnet, the basin frame comprises a peripheral part and a basin top part connected with the peripheral part, and the peripheral part is arranged around the periphery of the first magnet; the first voice coil is connected with the first vibrating diaphragm, the first magnet and the basin top are combined to form a magnetic loop with the second magnet, and the first voice coil, the first magnet, the second magnet and the basin top are matched to drive the first vibrating diaphragm to vibrate; the second voice coil is connected with the second vibrating diaphragm, part of the structure of the second voice coil extends into the first magnetic gap, a magnetic loop is formed between the first magnet and the peripheral part, and the second voice coil, the first magnet and the peripheral part are matched to drive the second vibrating diaphragm to vibrate. The volume of the earphone is reduced, and the miniaturization of the earphone is facilitated.

Description

Speakers and headphones

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on April 18, 2023, with application number 2023104218512 and application name “Speakers and Headphones”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of audio technology, and in particular to a speaker and earphones. Background Art

[0003] A speaker is an electroacoustic transducer device, and its performance has a great influence on the sound quality. As an important component of electronic equipment, such as headphones, the performance of the speaker is even more important. The speakers in headphones generally use a dynamic vibration system. Due to its low cost and mature technology, the dynamic vibration system can achieve good sound performance in the entire frequency band. However, the dynamic vibration system cannot avoid the split vibration that deteriorates the sound quality, and the high-frequency expansion is low. Therefore, headphones formed by the combination of a dynamic vibration system and a high-frequency unit have emerged. This type of headphones can achieve the advantages of three-frequency balance, abundant low frequency, bright high frequency and good resolution. Specifically, the types of such headphones include a combination of a dynamic vibration system and a moving iron vibration system, and a combination of a dynamic vibration system and a planar diaphragm. For both types, the thickness of the speaker is increased, which makes the volume of the headphones relatively large, which is not conducive to the miniaturization of the headphones.

[0004] Summary of the Invention

[0005] The present application provides a speaker and earphones to solve the problem that the thickness of the speaker is relatively large, which makes the volume of the earphones relatively large and is not conducive to the miniaturization of the earphones.

[0006] The technical solution is as follows:

[0007] A first aspect of the present application provides an earphone, comprising: a speaker, the speaker comprising: a first magnet, a second magnet, a basket, a first voice coil, a first diaphragm, a second voice coil, and a second diaphragm;

[0008] The first magnet is arranged around the outer circumference of the second magnet, with a gap between the first magnet and the second magnet; the basin frame includes an outer portion and a basin top connected to the outer portion; the outer portion is arranged around the outer circumference of the first magnet, with a first magnetic gap between the outer portion and the first magnet; the first diaphragm and the second diaphragm are respectively located on opposite sides of the basin top;

[0009] The first voice coil is connected to the first diaphragm. A preset gap is defined between the first diaphragm and the top of the basin. The first voice coil is located in the preset gap. The first magnet and the top of the basin are combined to form a magnetic circuit with the second magnet. The first voice coil, the first magnet, the second magnet, and the top of the basin cooperate to drive the first diaphragm to vibrate.

[0010] The second voice coil is connected to the second diaphragm, and part of the structure of the second voice coil extends into the first magnetic gap. A magnetic circuit is formed between the first magnet and the peripheral part. The second voice coil, the first magnet and the peripheral part cooperate to drive the second diaphragm to vibrate.

[0011] By adopting the above solution, the first diaphragm and the second diaphragm are respectively arranged on opposite sides of the top of the basin, so that the first diaphragm and the second diaphragm can be driven to vibrate by their respective corresponding components; and after the structure formed by the combination of the first magnet and the top of the basin forms a magnetic circuit with the second magnet, the first diaphragm is driven to produce sound after the first voice coil is energized; after the magnetic circuit is formed between the first magnet and the outer portion, the second diaphragm is driven to produce sound after the second voice coil is energized; because the thickness direction of the loudspeaker is parallel to the direction from the first diaphragm to the second diaphragm, although the first diaphragm and the second diaphragm are located in the magnetic fields formed by different magnetic circuits, the two magnetic circuits share the first magnet and the basin frame. Therefore, compared with other technical solutions that use a combination of a dynamic vibration system and a moving iron vibration system, or a combination of a dynamic vibration system and a planar diaphragm, both of which require two basin frames, the loudspeaker of the present application reduces the original components that increase the thickness in the thickness direction, thereby facilitating a reduction in the thickness of the loudspeaker. When the loudspeaker is applied to headphones, it is beneficial to reduce the volume of the headphones, thereby facilitating miniaturization of the headphones.

[0012] In some implementations, the basin top has a first through hole, a portion of the second magnet extends into the first through hole, and a gap exists between the portion of the second magnet extending into the first through hole and the first through hole.

[0013] By adopting the above solution, after the first through hole is opened, the second magnet does not contact the top of the basin, thereby strengthening the effect of the second magnet in cooperating with other components to drive the first diaphragm, thereby improving the sound quality of the speaker.

[0014] In some implementations, the first magnet is a ring-shaped structure having a first side surface and a second side surface opposite to each other; and the basin top is in contact with the first side surface.

[0015] By adopting the above solution, the first magnet is annular, so that the first magnet is a closed structure, which can be matched with the second magnet to enable the first voice coil to be in a uniformly distributed magnetic field.

[0016] In some implementations, a height direction of the first magnet is parallel to a direction from the first side surface to the second side surface; in the height direction of the first magnet, a height of the first magnet is not greater than a height of the second magnet.

[0017] By adopting the above solution, the second magnet is relatively close to the first diaphragm, thereby strengthening the effect of the second magnet in cooperating with other components to drive the first diaphragm, thereby improving the sound quality of the speaker.

[0018] In some implementations, the basin top completely covers the first side.

[0019] By adopting the above solution, the first magnet is magnetically guided through the top of the basin, which can increase the magnetic field strength of the gap between the first magnet and the second magnet and improve the vibration amplitude of the first diaphragm.

[0020] In some implementations, the speaker further includes a diaphragm, the first voice coil is fixed to one side of the first diaphragm, and the diaphragm is fixed to the other side opposite to the first diaphragm.

[0021] By adopting the above solution, the diaphragm is used to ensure the high frequency response of the speaker.

[0022] In some implementations, a surface of the basin top facing the first diaphragm has a first recessed groove, and at least a portion of the first voice coil can extend into the first recessed groove.

[0023] By adopting the above solution and designing the first recessed groove, on the one hand, sufficient movement space is provided for the first voice coil when the first diaphragm vibrates; on the other hand, it is beneficial to provide sufficient vibration space for the first diaphragm, thereby improving the sound quality of the speaker.

[0024] In some implementations, a side of the top of the basin facing the first diaphragm has a recessed structure, the recessed structure is distributed circumferentially around the first recessed groove, and a first protrusion is formed between the recessed structure and the first recessed groove; the circumferential edge of the first diaphragm is connected to the surface of the recessed structure.

[0025] By adopting the above solution, it is helpful to reduce the thickness of the speaker.

[0026] In some implementations, the speaker further includes a first fixing ring, and a circumferential edge of the first diaphragm passes through the first fixing ring to be connected to the surface of the recessed structure.

[0027] By adopting the above solution, the first fixing ring is used to facilitate the assembly of the first diaphragm and reduce the possibility of damage to the first diaphragm.

[0028] In some implementations, the speaker further includes a first protective cover, and a circumferential edge of the first diaphragm is clamped between the first protective cover and a first fixing ring.

[0029] By adopting the above solution, the first protective cover is used to protect the first diaphragm system; and the edge of the first diaphragm is clamped between the first protective cover and the first fixing ring to facilitate the fixation of the first diaphragm.

[0030] In some implementations, the first protective cover is provided with a first sound outlet hole.

[0031] By adopting the above solution, the sound generated by the first diaphragm can be transmitted to the outside of the loudspeaker through the first sound outlet.

[0032] In some implementations, the first sound outlet is installed with a damping mesh.

[0033] By adopting the above solution, on the one hand, the internal components of the speaker are protected, and on the other hand, it is helpful to prevent sound distortion.

[0034] In some implementations, the speaker further includes a first washer, the first magnet is located between the basin top and the first washer, and the first washer, the second voice coil, the first magnet, and the peripheral portion cooperate to drive the second diaphragm to vibrate.

[0035] By adopting the above solution, the first washer can achieve magnetic conductivity, so that the first magnetic gap can generate a stronger magnetic field, thereby facilitating the vibration of the second diaphragm.

[0036] In some implementations, the basin frame further includes a radial extension portion, the peripheral portion is cylindrical, the basin top is connected to one end of the peripheral portion, and the radial extension portion is connected to the other end opposite to the peripheral portion; a second sound outlet is provided on the radial extension portion.

[0037] By adopting the above solution, by providing the radial extension portion and opening the second sound outlet hole thereon, the sound generated by the second diaphragm is facilitated to be transmitted to the outside of the loudspeaker.

[0038] In some implementations, the speaker further includes a second protective cover, the second protective cover is connected to the basin frame, and a circumferential edge of the second diaphragm is clamped between the radially extending portion and the second protective cover.

[0039] By adopting the above solution, the second diaphragm is protected by the second protective cover.

[0040] In some implementations, the speaker further includes a second fixing ring, the second fixing ring is connected to the circumferential edge of the second diaphragm, and the circumferential edge of the second diaphragm is clamped between the second fixing ring and the second protective cover.

[0041] By adopting the above solution, the circumferential edge of the second diaphragm can be better fixed by using the second fixing ring and the second protective cover.

[0042] In some implementations, the basin frame further includes an axial extension portion connected to the radial extension portion; the axial extension portion is annular, the second protective cover is inserted into the axial extension portion, and the second fixing ring is located between the second protective cover and the radial extension portion.

[0043] By adopting the above solution, after the second protective cover is inserted into the axial extension portion, it is convenient to achieve a fixed connection between the second protective cover and the basin frame.

[0044] In some implementations, a leakage hole is provided on the second protective cover.

[0045] By adopting the above solution, the leakage hole can be connected to the outside and the cavity formed between the second protective cover and the second diaphragm, so that the atmosphere inside the cavity can be kept in balance with the external atmosphere.

[0046] In some implementations, the second sound outlet hole is provided with a damping mesh; and / or the leakage hole is provided with a damping mesh.

[0047] By adopting the above solution, on the one hand, the internal components of the speaker are protected, and on the other hand, it is helpful to prevent sound distortion.

[0048] In some implementations, when the leakage hole is provided with a damping mesh, the second protective cover has a second recessed groove, the second recessed groove is recessed toward the direction of the second diaphragm, the leakage hole is located at the bottom of the second recessed groove, the damping mesh is fixed in the second recessed groove, and the outer surface of the damping mesh is flush with the outer surface of the second protective cover.

[0049] By adopting the above solution, the damping mesh is not likely to bulge outward, which is beneficial to reducing the thickness of the speaker.

[0050] In some implementations, the inner surface of the second protective cover protrudes toward the second diaphragm to form an inwardly convex structure.

[0051] By adopting the above solution, the damping mesh can be easily installed and the structural strength of the second protective cover at the second recessed groove can be improved without reducing the thickness of the second protective cover at the second recessed groove.

[0052] In some implementations, the frequency of the sound emitted by the first diaphragm is higher than the frequency of the sound emitted by the second diaphragm.

[0053] By adopting the above solution, the speaker can have better expressiveness in both the low-frequency sound range and the high-frequency sound range, which is beneficial to improving the sound quality of the speaker.

[0054] By adopting the above solution, the speaker can have better expressiveness in both the low-frequency sound range and the high-frequency sound range, which is beneficial to improving the sound quality of the speaker.

[0055] In some implementations, the first voice coil is a planar voice coil, and the second voice coil is a cylindrical voice coil.

[0056] By adopting the above solution, the planar voice coil has the characteristics of small thickness and light mass, so that the transient and high-frequency characteristics are better. While it is beneficial to reduce the thickness of the speaker, it is also beneficial to improve the sound quality of the speaker in the high-frequency band; while the cylindrical voice coil has the characteristics of low cost and good performance.

[0057] In some implementations, a magnetization direction of the first magnet is opposite to a magnetization direction of the second magnet.

[0058] By adopting the above solution, the first magnet cooperates with the top of the basin to form a magnetic circuit with the second magnet for driving the first voice coil to vibrate.

[0059] In some implementations, the speaker further includes a circuit board, the circuit board is fixed to the basin frame, and the first voice coil and the second voice coil are electrically connected to the circuit board respectively.

[0060] By adopting the above solution, the circuit board is used to facilitate electrical connection between the speaker and other parts of the earphone, such as a battery, so that power can be supplied to the speaker.

[0061] In some implementations, the earphone further includes a housing, and the speaker is disposed inside the housing.

[0062] By adopting the above solution, the shell can be worn on the human ear. In addition, the outer shape of the shell can be adapted to the shape of the human ear to improve the wearing comfort of the user.

[0063] A second aspect of the present application provides a loudspeaker, comprising: a first magnet, a second magnet, a basket, a first voice coil, a first diaphragm, a second voice coil, and a second diaphragm;

[0064] The first magnet is arranged around the outer circumference of the second magnet, with a gap between the first magnet and the second magnet; the basin frame includes an outer portion and a basin top connected to the outer portion; the outer portion is arranged around the outer circumference of the first magnet, with a first magnetic gap between the outer portion and the first magnet; the first diaphragm and the second diaphragm are respectively located on opposite sides of the basin top;

[0065] The first voice coil is connected to the first diaphragm. A preset gap is defined between the first diaphragm and the top of the basin. The first voice coil is located in the preset gap. The first magnet and the top of the basin are combined to form a magnetic circuit with the second magnet. The first voice coil, the first magnet, the second magnet, and the top of the basin cooperate to drive the first diaphragm to vibrate.

[0066] The second voice coil is connected to the second diaphragm, and part of the structure of the second voice coil extends into the first magnetic gap. A magnetic circuit is formed between the first magnet and the peripheral part. The second voice coil, the first magnet and the peripheral part cooperate to drive the second diaphragm to vibrate.

[0067] By adopting the above-mentioned solution, the first diaphragm and the second diaphragm are respectively arranged on opposite sides of the top of the basin, so that the first diaphragm and the second diaphragm can be driven to vibrate by their respective corresponding components; and after the structure formed by the combination of the first magnet and the top of the basin forms a magnetic circuit with the second magnet, the first diaphragm is driven to produce sound after the first voice coil is energized; after the magnetic circuit is formed between the first magnet and the outer portion, the second diaphragm is driven to produce sound after the second voice coil is energized; because the thickness direction of the loudspeaker is parallel to the direction from the first diaphragm to the second diaphragm, although the first diaphragm and the second diaphragm are located in the magnetic fields formed by different magnetic circuits, the two magnetic circuits share the first magnet and the basin frame. Therefore, compared with other technical solutions that use a combination of a dynamic vibration system and a moving iron vibration system, or a combination of a dynamic vibration system and a planar diaphragm, both of which require two basin frames, the speaker of the present application reduces the original components that increase the thickness in the thickness direction, thereby facilitating a reduction in the thickness of the loudspeaker. When the loudspeaker is applied to headphones, it is beneficial to reduce the volume of the headphones, thereby facilitating miniaturization of the headphones. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] FIG1 is a schematic structural diagram of headphones provided in some embodiments of the present application;

[0069] FIG2 is an exploded view of a speaker provided in some embodiments of the present application;

[0070] FIG3 is a schematic structural diagram of a speaker provided in some embodiments of the present application;

[0071] FIG4 is a structural diagram of a loudspeaker provided in some embodiments of the present application from another perspective;

[0072] FIG5 is a structural diagram of a speaker provided in some embodiments of the present application from another perspective;

[0073] FIG6 is a cross-sectional view taken along line AA in FIG5 ;

[0074] FIG7 is an enlarged schematic diagram of point B in FIG6;

[0075] FIG8 is a cross-sectional view of a speaker provided in some other embodiments of the present application;

[0076] FIG9 is a cross-sectional view of a speaker provided in some further embodiments of the present application;

[0077] FIG10 is a schematic structural diagram of a first protective cover in some embodiments of the present application;

[0078] FIG11 is a schematic structural diagram of a basin stand in some embodiments of the present application;

[0079] FIG12 is a schematic structural diagram of a second protective cover in some embodiments of the present application;

[0080] FIG13 is a schematic structural diagram of the second protective cover from another perspective in some embodiments of the present application;

[0081] FIG14 is a cross-sectional view taken along line CC in FIG13;

[0082] FIG15 is a cross-sectional view of a second protective cover installed with a damping mesh in some embodiments of the present application;

[0083] FIG16 is a schematic diagram of magnetic flux lines in a magnetic circuit of a loudspeaker in some embodiments of the present application.

[0084] 1. The meanings of the figures are as follows: 100, earphone; 101, housing; 102, flexible sleeve; 103, earphone sound outlet; 200, speaker; 204, first magnet; 205, second magnet; 206, basin frame; 207, peripheral portion; 208, basin top; 209, first magnetic gap; 210, first voice coil; 211, first diaphragm; 212, preset gap; 213, second voice coil; 214, second diaphragm; 216, first through hole; 217, first side surface; 218, second side surface; 219, diaphragm; 220, first recessed groove; 221, recessed structure; 222, first protruding portion; 223, first fixing ring; 224, first protective cover; 225, first middle portion; 226, edge portion; 2 27. First sound outlet; 228. First sound outlet tube; 229. Arc chamfer; 230. First washer; 231. Radial extension portion; 232. Second sound outlet; 233. Second protective cover; 234. Axial portion; 235. Second intermediate portion; 236. Second fixing ring; 237. Axial extension portion; 238. Leakage hole; 239. Damping mesh; 240. Second recessed groove; 241. Circuit board; 242. First connection position; 243. Second connection position; 244. Third connection position; 245. Folding ring portion; 246. Dome top portion; 247. Inward convex structure. DETAILED DESCRIPTION

[0085] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0086] It should be understood that the “multiple” mentioned in this application refers to two or more. In the description of this application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in order to facilitate the clear description of the technical solution of this application, words such as “first” and “second” are used to distinguish between identical or similar items with basically the same functions and effects. Those skilled in the art can understand that words such as “first” and “second” do not limit the quantity and execution order, and words such as “first” and “second” do not necessarily limit them to be different.

[0087] The speakers and headphones provided in the embodiments of the present application are explained in detail below.

[0088] As shown in FIG1 , in one or more embodiments, the present application provides a headset 100, which can be either a wireless headset or a wired headset. The headset 100 can be used in conjunction with electronic devices such as mobile phones, tablet computers, laptop computers, and smart watches to convert electrical signals received by the headset from the electronic devices into mechanical vibrations, thereby enabling the headset 100 to produce sound. It should be noted that for headsets 100 that also have a microphone, they can also convert mechanical vibrations into electrical signals and send the corresponding electrical signals to the electronic devices.

[0089] For example, in combination with FIG1 and FIG3 , the present application provides a specific description by taking the earphone 100 as a wireless earphone as an example. The earphone 100 includes a housing 101 , a mainboard, a battery, and a speaker 200 .

[0090] The housing 101 can serve as a carrier for the functional components of the earphone 100. The housing 101 can be worn on the human ear. The outer shape of the housing 101 can be adapted to the shape of the human ear to improve the user's wearing comfort. To improve the user's comfort when wearing the earphone 100, the earphone 100 can also be provided with a flexible sleeve 102, which can be used to contact the user's ear. The outer shape of the flexible sleeve 102 can be shaped like the shape of the human ear canal to improve the adaptability of wearing the earphone 100. In addition, the flexible sleeve 102 can be made of a flexible material such as silicone or rubber to improve the user's comfort when wearing the earphone 100. The housing 101 has an earphone sound outlet 103; the sound outlet channel of the speaker 200 is connected to the earphone sound outlet 103.

[0091] It should be noted that FIG1 only schematically illustrates some components of the headset 100 , and the actual shape, size, position, and structure of these components are not limited by FIG1 and the following figures.

[0092] A motherboard (not shown) is mounted inside the housing 101. It integrates the main control chip, Bluetooth chip, and other components, and can be used for charging management and signal transmission. The motherboard can be a rigid circuit board, a flexible circuit board, or a combination of rigid and flexible circuit boards. A battery (not shown) is mounted inside the housing 101. The battery provides power to the motherboard, speaker 200, and other electronic components within the headset 100. The speaker 200 is located inside the housing 101.

[0093] 2 and 6 , in some embodiments, the speaker 200 includes: a first magnet 204, a second magnet 205, a basin frame 206, a first voice coil 210, a first diaphragm 211, a second voice coil 213, and a second diaphragm 214; the first magnet 204 is arranged around the circumference of the second magnet 205, and a gap is formed between the first magnet 204 and the second magnet 205; the basin frame 206 includes an outer portion 207 and a basin top 208 connected to the outer portion 207; the outer portion 207 is arranged around the circumference of the first magnet 204, and a first magnetic gap 209 is formed between the outer portion 207 and the first magnet 204; the basin top 208 is located between the first magnet 204 and the first diaphragm 211; the basin top has two opposite side surfaces; the first diaphragm 211 and the second diaphragm 214 are respectively located on two opposite side surfaces of the basin top 208; the first voice coil 210 is connected to the first diaphragm 211 The first diaphragm 211 and the basin top 208 are fixedly connected, and a preset gap 212 is provided between the first diaphragm 211 and the basin top 208, that is, the first diaphragm 211 and the basin top 208 are spaced apart, and the first voice coil 210 is located in the preset gap 212. The structure formed by the combination of the first magnet 204 and the basin top 208 forms a magnetic circuit with the second magnet 205. The first voice coil 210, the first magnet 204, the second magnet 205 and the basin top 208 cooperate to drive the first diaphragm 211 to vibrate; the second voice coil 213 is fixedly connected to the second diaphragm 214, and part of the structure of the second voice coil 213 extends into the first magnetic gap 209. A magnetic circuit is formed between the first magnet 204 and the outer portion 207. The second voice coil 213, the first magnet 204 and the outer portion 207 cooperate to drive the second diaphragm 214 to vibrate; the first diaphragm 211 and the second diaphragm 214 are respectively located on opposite sides of the basin top 208.

[0094] It should be noted that the speaker 200 is not limited to being used in the earphone 100. In some other possible implementations, it can also be applied to mobile phones, tablet computers, laptop computers or smart watches.

[0095] The loudspeaker 200 in the embodiment of the present application is configured such that the first diaphragm 211 and the second diaphragm 214 are respectively arranged on two opposite sides of the basin top 208, so that the first diaphragm 211 and the second diaphragm 214 can be driven by their respective corresponding components to vibrate. After a magnetic circuit is formed between the first magnet 204 and the basin top 208 and the second magnet 205, the first diaphragm 211 is driven to produce sound after the first voice coil 210 is energized. The membrane 211 is mainly driven by the first voice coil 210, the first magnet 204, the second magnet 205 and the basin top 208; after the magnetic circuit is formed between the first magnet 204 and the peripheral part 207, the second diaphragm 214 is driven to produce sound after the second voice coil 213 is energized. The second diaphragm 214 is mainly driven by the second voice coil 213, the first magnet 204 and the peripheral part 207; due to the thickness direction of the speaker 200 and the direction from the first diaphragm 211 to the second diaphragm 214 is parallel, so that when the two magnetic circuits share the first magnet 204 and the basin frame 206, compared with other types that use a combination of a dynamic vibration system and a moving iron vibration system, and a combination of a dynamic vibration system and a planar diaphragm, the speaker 200 of the present application reduces the original components that increase the thickness in the thickness direction, thereby helping to reduce the thickness of the speaker 200, and the basin top 208 cooperates with the first magnet 204, so that when the basin top 208 is magnetic to the first magnet 204 or the basin top 208 is a magnet, on the one hand, it is beneficial to enhance the magnetism of the first magnet 204, and on the other hand, it is beneficial to realize that the outer portion 207 is magnetic to the first magnet 204 or the outer portion 207 has magnetism, so that a magnetic circuit can be formed between the first magnet 204; when the speaker 200 is applied to the earphone 100, it is beneficial to reduce the volume of the earphone 100, thereby helping to miniaturize the earphone 100. In addition, the speaker 200 has the characteristics of three-frequency balance, abundant low frequency, bright high frequency and good resolution.

[0096] As shown in conjunction with FIG. 2 and FIG. 6 , in some embodiments, the first voice coil 210 and the second voice coil 213 are located on opposite sides of the basin top 208 , respectively. The first diaphragm 211 and the first voice coil 210 are located on the same side of the basin top 208 , and the second diaphragm 214 and the second voice coil 213 are located on the same side of the basin top 208 . The second magnet 205 is a columnar structure, for example, a cylindrical structure. Of course, the second magnet 205 can also have other shapes, such as an elliptical column structure or a prismatic structure. The first magnet 204 is a magnetic steel or a magnet, and the second magnet 205 is a magnetic steel or a magnet. The first magnet 204 can be an annular structure, for example, a circular ring structure. Of course, the first magnet 204 can also have other closed shapes, such as a polygonal outer contour. This makes the first magnet 204 a closed structure. When combined with the second magnet 205, it allows the first voice coil 210 to be in a uniformly distributed magnetic field. The second magnet 205 is located inside the ring of the first magnet 204 and is spaced apart from the first magnet 204 , that is, the maximum diameter of the second magnet 205 is smaller than the diameter of the inner ring of the first magnet 204 ; the first magnet 204 is an integrated structure.

[0097] It should be noted that, in some other possible implementations, the first magnet 204 may include a plurality of first sub-magnets that are spaced apart from each other, and the plurality of first sub-magnets are evenly spaced apart around the circumference of the second magnet 205 .

[0098] As shown in conjunction with Figures 2 and 6 , in some embodiments, the basin frame 206 is made of a magnetic material, which may be a magnetic metal such as iron, cobalt, or nickel. Furthermore, the surface of the basin frame 206 may be electroplated with multiple colors or galvanized to prevent rust. The basin top 208 and the outer portion 207 are integrally formed. The outer portion 207 may be an annular structure, for example, a circular ring. Of course, the outer contour of the outer portion 207 may also have other shapes, such as a polygon. When the outer portion 207 is an annular structure, the outer portion 207 extends a certain length along the axial direction of the ring to form a cylindrical structure, and the basin top 208 is connected to one end of the outer portion 207; the first magnet 204 and the second magnet 205 are both located in the cavity formed by the outer portion 207 and the basin top 208; the first magnet 204 and the second magnet 205 are both located on the inner side of the basin top 208, and the first diaphragm 211 and the first voice coil 210 are located on the outer side of the basin top 208. The first voice coil 210 and the first diaphragm 211 can be fixedly connected by bonding, with the basin top 208 and the second magnet 205 spaced apart from the first diaphragm 211. The second voice coil 213 and the second diaphragm 214 can be fixedly connected by bonding, with the second voice coil 213 not in contact with the first magnet 204 or the outer ring portion. The first diaphragm 211, the second diaphragm 214, the first voice coil 210, and the second voice coil 213 can be coaxially arranged, with the axis of the second magnet 205 passing through the centers of the first diaphragm 211 and the second diaphragm 214. It should be noted that in some other possible embodiments, at least the basin top 208 of the basin frame 206 is a magnet or magnetic steel, and the outer portion 207 is a magnet or magnetic steel.

[0099] As shown in conjunction with Figures 6 and 11 , in some embodiments, the basin top 208 has a first through-hole 216. A portion of the second magnet 205 extends into the first through-hole 216, with a gap between the portion of the second magnet 205 extending into the first through-hole 216 and the first through-hole 216. This prevents the second magnet 205 from contacting the basin top 208 after the first through-hole 216 is formed, thereby enhancing the effect of the second magnet 205 when cooperating with other components to drive the first diaphragm 211 and improving the sound quality of the speaker 200. In one embodiment, the first through-hole 216 can be a circular hole, with the second magnet 205 spaced apart from the first through-hole 216. This facilitates forming a magnetic circuit between the basin top 208 and the first magnet 204 when combined. Of course, the first through-hole 216 can also be designed as a through-hole of other shapes, such as a polygonal through-hole, as needed.

[0100] As shown in conjunction with FIG6 and FIG16 , in some embodiments, the first magnet 204 has a first side 217 and a second side 218 that are opposed to each other; the basin top 208 contacts the first side 217, and the second side 218 faces the second diaphragm 214; because the basin top 208 is connected to the outer portion 207, this is equivalent to an indirect connection between the first side 217 of the first magnet 204 and the outer portion 207. Therefore, a magnetic circuit for realizing the diaphragm of the second diaphragm 214 can be formed between the second side 218 of the first magnet 204 and the outer portion 207. FIG16 is a partial cross-sectional view of the loudspeaker, with some components omitted (for example, only the first voice coil 210 is shown, while the first diaphragm is not shown) to facilitate a clearer illustration of the magnetic flux lines. The distribution of the magnetic flux lines is merely schematic. In this way, the top portion 208 of the basin conducts magnetism to the first magnet 204, forming a magnetic circuit with the second magnet 205 when the top portion 208 and the first magnet 204 are combined. The magnetic flux lines of the portion of the second magnet 205 extending into the first through-hole 216 are directed toward the inner wall of the first through-hole 216 of the top portion 208 of the basin. The first voice coil 210 is suspended in the magnetic field. When power is supplied to the first voice coil 210, the magnetic field drives the first diaphragm 211 to vibrate. Because the basin frame 206 is made of a magnetically conductive material and the top portion 208 of the basin frame 206 contacts the first magnet 204, the magnetic properties of the first magnet 204 are enhanced. This helps increase the vibration amplitude of the first diaphragm 211 when the first voice coil 210 is in the magnetic field and powered. In one embodiment, the top portion 208 of the basin frame 206 is bonded to the first side surface 217. In addition, since the basin top 208 and the outer portion 207 are an integral structure, and the basin top 208 is in contact with the first magnet 204, when the basin top 208 conducts magnetism to the first magnet 204, on the one hand, it is beneficial to enhance the magnetism of the first magnet 204. After the first magnet 204 cooperates with the basin top 208, it can form a magnetic circuit with the second magnet 205 for realizing the vibration of the first diaphragm 211. On the other hand, it is beneficial to realize the magnetic conduction of the outer portion 207 to the first magnet 204, so that a magnetic circuit can be formed between the outer portion 207 and the first magnet 204 for realizing the vibration of the second diaphragm 214.

[0101] 6 and 11 , in some embodiments, the height direction of the first magnet 204 is parallel to the direction from the first side surface 217 to the second side surface 218 ; in the height direction of the first magnet 204 , the height of the first magnet 204 is not greater than the height of the second magnet 205 , so that the second magnet 205 is relatively close to the first diaphragm 211 , thereby enhancing the effect of the second magnet 205 in cooperating with other components to drive the first diaphragm 211 , improving the sound quality of the speaker 200 , and also helping to reduce the thickness of the speaker 200 . In one embodiment, the height of the first magnet 204 is smaller than that of the second magnet 205. The second magnet 205 extends into the first through hole 216, and the top of the second magnet 205 exceeds the first side surface 217 of the first magnet 204. This helps to move the magnetic flux lines between the second magnet 205 and the basin top 208 toward the direction of the first voice coil 210, so that the first voice coil 210 is located in the dense area of ​​magnetic flux lines between the second magnet 205 and the basin top 208. In this way, when the first voice coil 210 is energized, the vibration amplitude of the first diaphragm 211 is increased. In addition, the first magnet 204 contacts the basin top 208, so that the magnetic flux lines at the basin top 208 are directed toward the first diaphragm 211. 11 is distributed more densely near the side of the basin 11 (that is, the closer to the basin top 208, the denser the magnetic flux lines are distributed on the side facing the first diaphragm 211), and then the second magnet 205 is larger than the first magnet 204, which is conducive to making the first voice coil 210 located in the dense area of ​​the magnetic flux lines in the magnetic circuit, thereby increasing the vibration amplitude of the first diaphragm, and then helping to improve the high-frequency sound quality of the speaker 200; and the top of the second magnet 205 does not need to extend out of the basin top 208, which is conducive to ensuring that the vibration amplitude of the first diaphragm 211 is not too large, reducing the possibility of the first diaphragm 211 hitting the second magnet 205 when vibrating, which is also conducive to ensuring the service life of the first diaphragm 211.

[0102] As shown in Figure 6, in some embodiments, the basin top 208 completely covers the first side surface 217, so that the basin top 208 conducts magnetism to the first magnet 204, which can increase the magnetic field strength of the gap between the first magnet 204 and the second magnet 205, and improve the vibration amplitude of the first diaphragm 211; in addition, since the basin top 208 is in full contact with the first side surface 217 of the first magnet 204, this is conducive to improving the connection strength between the basin top 208 and the first magnet 204, thereby increasing the risk of damage to the speaker 200 when the earphones fall, that is, the first magnet 204 is not easily separated from the basin frame 206, thereby ensuring the quality and performance of the speaker. In addition, in the embodiment of the present application, the top portion 208 of the basin frame 206 is substantially in contact with the first side surface 217 of the first magnet 204. While ensuring the connection strength, it is also beneficial to increase the strength of the magnetic field between the first magnet 204 and the outer portion 207 of the basin frame 206, thereby facilitating an increase in the vibration amplitude of the second diaphragm 214. Since the first magnet 204 is in contact with the top portion 208 of the basin, in order to ensure the vibration amplitude of the first voice coil 210, the height of the second magnet 205 is made greater than the height of the first magnet 204, and the second magnet 205 is also made closer to the direction of the first voice coil 210.

[0103] In one embodiment, the basin top 208 is bonded and fixed to the first side surface 217 of the first magnet 204; the diameter of the first through hole 216 is equal to the inner ring diameter of the annular first magnet 204, and the first voice coil 210 can be annular. For example, the first voice coil 210 is annular, the diameter of the second magnet 205 is larger than the diameter of the inner ring of the first voice coil 210, and the diameter of the second magnet 205 is smaller than the diameter of the outer ring of the first voice coil 210, which is conducive to better driving the movement of the first diaphragm 211 through the first voice coil 210. It should be noted that, in some other possible embodiments, the basin top 208 may also cover more than half of the first side surface 217, that is, the diameter of the first through hole 216 is not greater than half of the sum of the inner ring diameter and the outer ring diameter of the first magnet 204, which can also enhance the connection strength between the basin top 208 and the first magnet 204; the part of the first side surface 217 of the first magnet 204 that is not covered by the basin top 208 can also extend an annular protrusion of a certain height in the direction of the first voice coil 210, and the annular protrusion is spaced apart from the second magnet 205 and arranged around the outer periphery of the second magnet 205, which is also conducive to ensuring the vibration degree of the first diaphragm 211 group.

[0104] As shown in conjunction with Figures 6 and 7 , in some embodiments, the speaker 200 further includes a diaphragm 219. The first voice coil 210 is fixed to one side of the first diaphragm 211, and the diaphragm 219 is fixed to the opposite side of the first diaphragm 211. Thus, the diaphragm 219 is utilized to ensure high-frequency response of the speaker 200. In one embodiment, the diaphragm 219 and the first diaphragm 211 can be fixedly connected by bonding or other means. The first voice coil 210 faces the top portion 208 of the basin. The diaphragm 219 can have a planar structure or a dome structure. The dome structure has a curved surface, which can be a spherical surface or other curved surfaces, such as a surface with a gradually changing curvature. The center of the diaphragm 219, the center of the first diaphragm 211, and the center of the second diaphragm 214 are located on the same centerline.

[0105] As shown in conjunction with Figures 6 and 7 , in some embodiments, the surface of the basin top 208 facing the first diaphragm 211 has a first recessed groove 220, into which at least a portion of the first voice coil 210 can extend. The design of the first recessed groove 220 not only provides sufficient space for the first voice coil 210 to move when the first diaphragm 211 vibrates, but also facilitates sufficient vibration space for the first diaphragm 211, thereby improving the sound quality of the speaker 200. In one embodiment, the first recessed groove 220 is annular, with an outer diameter greater than that of the first voice coil 210. This facilitates the insertion of the first voice coil 210 into the first recessed groove 220, while allowing the top surface of the second magnet 205 to be flush with the bottom of the first recessed groove 220. Of course, in some other possible implementations, under the premise of ensuring the vibration amplitude of the first diaphragm 211, the top surface of the second magnet 205 can also extend out of the bottom surface of the first recessed groove 220. This is conducive to positioning the first voice coil 210 in a dense area of ​​magnetic flux lines in the magnetic circuit, thereby increasing the vibration amplitude of the first diaphragm, and thus helping to improve the high-frequency sound quality of the speaker 200.

[0106] As shown in Figures 6 and 11, in some embodiments, the side of the basin top 208 facing the first diaphragm 211 has a recessed structure 221, the recessed structure 221 is distributed circumferentially around the first recessed groove 220, and a first protrusion 222 is formed between the recessed structure 221 and the first recessed groove 220; the circumferential edge of the first diaphragm 211 is connected to the surface of the recessed structure 221, which is conducive to reducing the thickness of the speaker 200.

[0107] As shown in conjunction with FIG. 2 and FIG. 6 , in some embodiments, the loudspeaker 200 further includes a first fixing ring 223. The circumferential edge of the first diaphragm 211 is connected to the surface of the recessed structure 221 through the first fixing ring 223. This facilitates the assembly of the first diaphragm 211 and reduces the possibility of damage to the first diaphragm 211. In one embodiment, the first diaphragm 211 is fixedly connected to the first fixing ring 223. Exemplarily, the connection can be achieved by bonding or an integral connection. In this way, the first diaphragm 211 and the first fixing ring 223 can form an integral component, so as to facilitate fixing the first diaphragm 211 to the basin frame 206. The connection between the first fixing ring 223 and the basin top 208 can be fixed by bonding or welding.

[0108] 2 , 6 and 11 , in some embodiments, the speaker 200 further includes a first protective cover 224 , and the circumferential edge of the first diaphragm 211 is clamped between the first protective cover 224 and the first fixing ring 223 , so that the first protective cover 224 is used to protect the first diaphragm 211 system; and the edge of the first diaphragm 211 is clamped between the first protective cover 224 and the first fixing ring 223 to facilitate the fixation of the first diaphragm 211 . In one embodiment, the first protective cover 224 is fixedly connected to the first diaphragm 211. The first protective cover 224 includes a first middle portion 225 and an edge portion 226 circumferentially surrounding the first middle portion 225. The edge portion 226 and the first middle portion 225 are an integral structure. The edge portion 226 is annular and fixedly connected to the first diaphragm 211. The diaphragm 219 is located in the cavity formed between the first diaphragm 211 and the first middle portion 225. The first protective cover 224 can be formed by stamping, so that there is a height difference between the edge portion 226 and the first middle portion 225. After the edge portion 226 is fixedly connected to the first diaphragm 211, there is a gap between the first middle portion 225 and the diaphragm 219, so that the first diaphragm 211 can drive the diaphragm 219 to vibrate together, providing a larger movement space for the vibration of the first diaphragm 211.

[0109] As shown in Figure 10, in some embodiments, the first protective cover 224 is provided with a first sound outlet hole 227, so that the sound generated by the first diaphragm 211 can be transmitted to the outside of the speaker 200 through the first sound outlet hole 227; the first sound outlet hole 227 can be provided on the first middle portion 225, and the shape of the first sound outlet hole 227 can be circular, elliptical or arc-shaped; in addition, the number of the first sound outlet holes 227 can be one or more.

[0110] It should be noted that in some other possible embodiments, as shown in FIG8 , the first sound outlet 227 can be connected to a first sound outlet tube 228, and the first intermediate portion 225 is located between the sound outlet tube and the first diaphragm 211; the first sound outlet tube 228 is conducive to improving the sound quality of the speaker 200. The first sound outlet tube 228 can be conical, and the first sound outlet tube 228 includes a first end and a second end. The first end is connected to the first sound outlet 227, and the inner diameter of the first sound outlet tube 228 gradually decreases from the first end to the second end. In some other possible embodiments, as shown in FIG9 , the edge of the first sound outlet 227 is in the form of a circular chamfer 229, which is conducive to forming a Coanda surface, so as to facilitate the propagation of sound into the first sound outlet 227 and reduce damping. Exemplarily, the first sound outlet tube 228 and the first protective cover 224 can be integrally injection molded, thereby improving the connection strength between the first sound outlet tube 228 and the first protective cover 224 and reducing the difficulty of assembly; of course, the first sound outlet tube 228 and the first protective cover 224 can also be a split structure. Exemplarily, the first sound outlet tube 228 can be set on the first protective cover 224 by gluing, clamping, threading, etc.

[0111] As shown in Figures 2 and 6, in some embodiments, the speaker 200 also includes a first washer 230, and the first magnet 204 is located between the basin top 208 and the first washer 230. The first washer 230, the second voice coil 213, the first magnet 204 and the outer portion 207 cooperate to drive the second diaphragm 214 to vibrate. The first washer 230 can achieve magnetic conductivity so that the first magnetic gap 209 can generate a stronger magnetic field, thereby facilitating the vibration of the second diaphragm 214. In one embodiment, the first diaphragm 211 and the second diaphragm 214 are respectively located on both sides of the whole formed by the first magnet 204, the second magnet 205 and the first washer 230, the second diaphragm 214 is located on one side of the first washer 230, and the first magnet 204 and the second magnet 205 are both located on the other side opposite to the first washer 230; the first magnet 204 and the second magnet 205 are respectively fixedly connected to the first washer 230, wherein the second side surface 218 of the first magnet 204 is connected to the first washer 230; the material of the first washer 230 is magnetic conductive material, and the magnetic conductive material can be a magnetic conductive metal, and the magnetic conductive metal is iron, cobalt or nickel. In addition, the surface of the first washer 230 can be colorfully electroplated or galvanized to prevent the first washer 230 from rusting; the first washer 230 is circular, and the diameter of the first washer 230 is not less than the diameter of the outer ring of the first magnet 204, and the diameter of the first washer 230 is smaller than the diameter of the second voice coil 213, so as to prevent the second voice coil 213 from touching the first washer 230 when moving in the first magnetic gap 209; of course, in some other possible implementations, the first washer 230 can also be polygonal. As shown in FIG16 , the first side surface 217 of the first magnet 204 contacts the top portion 208 of the basin, and the top portion 208 of the basin is fixedly connected to the peripheral portion 207, so that the first magnet 204 can conduct magnetism to the peripheral portion 207, and the second side surface 218 of the first magnet 204 contacts the first washer 230 to conduct magnetism to the first washer 230, thereby forming a magnetic circuit between the first washer 230, the first magnet 204 and the peripheral portion 207 respectively. After the second voice coil 213 extends into the first magnetic gap 209, When power is applied to coil 213, the second voice coil 213, under the action of the magnetic field, drives the second diaphragm 214 to vibrate. Furthermore, because the first washer 230 conducts magnetism to the first magnet 204, the magnetic flux lines are confined to the surface of the first washer 230, resulting in a denser distribution of magnetic flux lines on the side of the first washer 230 opposite the outer portion 207. This places the second voice coil 213 in a densely distributed area of ​​magnetic flux lines within the magnetic circuit, thereby increasing the vibration amplitude of the second diaphragm 214 and, in turn, improving the low-frequency sound quality of the speaker 200. The first washer 230 is a sheet-like structure, with the first magnet 204 and the second magnet 205 both located on one side of the first washer 230. It should be noted that in some other embodiments, a third magnet, such as a magnetic steel or a magnet, may be fixed to the other side of the first washer 230.

[0112] As shown in conjunction with Figures 2, 6, and 11, in some embodiments, the frame 206 further includes a radial extension 231 connected to the other end opposite the outer portion 207. A second sound outlet 232 is defined in the radial extension 231, thereby facilitating the transmission of sound generated by the second diaphragm 214 to the exterior of the speaker 200. The provision of the radial extension 231 facilitates the use of a larger second diaphragm 214. The area of ​​the first diaphragm 211 is less than or equal to the area of ​​the second diaphragm 214. In one embodiment, the second sound outlet 232 may be strip-shaped, such as an arc-shaped. Alternatively, the second sound outlet 232 may be circular. There may be multiple second sound outlets 232, evenly distributed along the radial extension 231. The edges of the second sound outlets 232 have arc-shaped chamfers 229, which facilitate the formation of a Coanda surface, facilitating sound transmission into the second sound outlet and reducing damping. The sound outlet channel of the speaker 200 includes a first sound outlet hole 227 and a second sound outlet hole 232. Both the first sound outlet hole 227 and the second sound outlet hole 232 can face the headphone sound outlet hole 103 of the headphone 100. It should be noted that the radial extension portion 231 also plays a role in driving the second diaphragm. That is, the structure formed by the combination of the first washer 230 and the first magnet 204 forms a magnetic circuit with the structure formed by the combination of the outer portion 207 and the radial extension portion 231. After the second voice coil 213 extends into the first magnetic gap 209, when the second voice coil 213 is energized, the second voice coil 213 drives the vibration of the second diaphragm 214 under the action of the magnetic field.

[0113] As shown in conjunction with Figures 2, 6, and 12, in some embodiments, the speaker 200 further includes a second protective cover 233. The second protective cover 233 is connected to the frame 206, and the circumferential edge of the second diaphragm 214 is sandwiched between the radially extending portion 231 and the second protective cover 233. In this way, the second diaphragm 214 is protected by the second protective cover 233. In one embodiment, the second protective cover 233 includes an axial portion 234 and a second intermediate portion 235. The axial portion 234 extends along the height direction of the speaker 200, and the axial portion 234 and the second intermediate portion 235 are integrally structured.

[0114] As shown in conjunction with FIG. 2 and FIG. 6 , in some embodiments, the speaker 200 further includes a second fixing ring 236 , which is connected to the circumferential edge of the second diaphragm 214 . The circumferential edge of the second diaphragm 214 is sandwiched between the second fixing ring 236 and the second protective cover 233 . Thus, the second fixing ring 236 and the second protective cover 233 can effectively secure the circumferential edge of the second diaphragm 214 . In one embodiment, the second diaphragm 214 is fixedly connected to the second fixing ring 236 , exemplarily by bonding or an integral connection. The second diaphragm 214 includes a rim 245 and a dome 246 . The rim 245 and dome 246 can be integrally structured or fixedly connected by bonding. The junction between the rim 245 and dome 246 is fixedly connected to the second voice coil 213 . The rim 245 is fixedly connected to the second fixing ring 236 , exemplarily by bonding or an integral connection. It should be noted that, in some other possible implementations, the first protective cover 224 and the second protective cover 233 can be omitted to save costs; and the diaphragm 219 can also be omitted to save costs; of course, the spherical top 246 of the second diaphragm 214 can also be replaced by other forms of diaphragm structures.

[0115] As shown in Figures 2, 6, and 11, in some embodiments, the basin frame 206 further includes an axial extension 237 connected to the radial extension 231. The axial extension 237 is annular, and the second protective cover 233 is inserted into the axial extension 237. The second fixing ring 236 is positioned between the second protective cover 233 and the radial extension 231. Insertion of the second protective cover 233 into the axial extension 237 facilitates a secure connection between the second protective cover 233 and the basin frame 206. In one embodiment, the axial portion 234 of the second protective cover 233 is inserted into the annular axial extension 237. The axial portion 234 and the axial extension 237 can be securely connected via an interference fit and / or adhesive bonding. The basin top 208, the outer portion 207, the radial extension 231, and the axial extension 237 of the basin frame 206 are integrally formed, which improves the overall structural stability of the basin frame 206.

[0116] As shown in Figures 12, 13, and 14, in some embodiments, the second protective cover 233 is provided with a leakage hole 238. Through the leakage hole 238, the outside air and the cavity formed between the second protective cover 233 and the second diaphragm 214 are connected. This allows the atmosphere inside the cavity to maintain equilibrium with the outside air. The leakage hole 238 is a through hole; there can be one or more leakage holes 238. When there are multiple leakage holes 238, the multiple leakage holes 238 are evenly distributed on the second intermediate fabric of the second protective cover 233, for example, they can be symmetrically distributed.

[0117] In some embodiments, the first sound outlet 227, the second sound outlet 232 and the leakage hole 238 may also be fixed with a damping mesh 239 (see Figures 4 and 15), where only the damping mesh 239 at the leakage hole 238 is shown. This can protect the internal components of the speaker 200 on the one hand, and prevent sound distortion on the other hand. As shown in Figures 12, 13 and 14, in one embodiment, the second protective cover 233 has a second recessed groove 240, which is recessed toward the second diaphragm 214. The leakage hole 238 is located at the bottom of the second recessed groove 240, and the damping mesh 239 is fixed in the second recessed groove 240 by bonding. In this way, the damping mesh 239 can be flush with the outer surface of the second middle portion 235 of the second protective cover 233, which is conducive to reducing the thickness of the loudspeaker 200; illustratively, after the second recessed groove 240 is recessed toward the second diaphragm 214 on the second protective cover 233, the inner surface of the second middle portion 235 protrudes toward the second diaphragm 214 to form an inward convex structure 247. In this way, without reducing the thickness of the second middle portion 235 at the second recessed groove 240, the damping mesh 239 is easily installed and the structural strength of the second middle portion 235 at the second recessed groove 240 is improved.

[0118] In some embodiments, the frequency of the sound emitted by the first diaphragm 211 is higher than the frequency of the sound emitted by the second diaphragm 214. In this way, the first diaphragm emits high-frequency sounds and the second diaphragm emits low-frequency sounds, which can make the speaker 200 have better expressiveness in both the low-frequency range and the high-frequency range, which is conducive to improving the sound quality of the speaker 200.

[0119] In some embodiments, the first voice coil 210 is a planar voice coil, which has the characteristics of small thickness and light mass, so that the transient and high-frequency characteristics are better. While it is beneficial to reduce the thickness of the speaker 200, it is also beneficial to improve the sound quality of the speaker 200 in the high frequency band; the second voice coil 213 is a cylindrical voice coil, which has the characteristics of low cost and good performance.

[0120] As shown in FIG6 , in some embodiments, the magnetization direction of the first magnet 204 is opposite to the magnetization direction of the second magnet 205. Thus, the first magnet 204, combined with the basin top 208, and the second magnet 205 can form a magnetic circuit for driving the first voice coil 210 to vibrate. The magnetization direction is from the south pole to the north pole, that is, from the south pole to the north pole. For example, the first side 217 of the first magnet 204 is the south pole, the second side 218 of the first magnet 204 is the north pole, the end of the second magnet 205 facing the first diaphragm 211 is the north pole, and the end of the second magnet 205 facing the second diaphragm 214 is the south pole.

[0121] As shown in conjunction with Figures 2, 3, and 5, in some embodiments, the speaker 200 further includes a circuit board 241. The circuit board 241 is fixed to the frame 206, and the first voice coil 210 and the second voice coil 213 are electrically connected to the circuit board 241. The use of the circuit board 241 facilitates electrical connection between the speaker 200 and other components of the headset 100, such as a battery, to provide power to the speaker 200. The circuit board 241 is also electrically connected to the mainboard of the headset 100. In one embodiment, the circuit board 241 is roughly arc-shaped so as to be fixed on the radial extension portion 231 of the basin frame 206, and a first connection position 242, a second connection position 243 and a third connection position 244 are respectively arranged along the length direction of the circuit board 241 from one end to the other end; the number of the first connection positions 242 is two, the number of the second connection positions 243 is two, and the number of the third connection positions 244 is two, the two first connection positions 242 are symmetrically arranged, the two second connection positions 243 are symmetrically arranged, and the two third connection positions 244 are symmetrically arranged; the two first connection positions 242 are electrically connected to the mainboard, the two second connection positions 243 are electrically connected to the second voice coil 213, and the two third connection positions 244 are electrically connected to the first voice coil 210.

[0122] In the description of the specification of this application, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A headset, characterized in that: include: A loudspeaker, comprising: a first magnet, a second magnet, a basin frame, a first voice coil, a first diaphragm, a second voice coil and a second diaphragm; The first magnet is arranged around the outer circumference of the second magnet, and there is a gap between the first magnet and the second magnet; the basin frame includes an outer portion and a basin top connected to the outer portion; the outer portion is arranged around the outer circumference of the first magnet, and there is a first magnetic gap between the outer portion and the first magnet; the first diaphragm and the second diaphragm are respectively located on two opposite sides of the basin top; The first voice coil is connected to the first diaphragm, a preset gap is formed between the first diaphragm and the top of the basin, the first voice coil is located in the preset gap, the first magnet and the top of the basin are combined to form a magnetic circuit with the second magnet, and the first voice coil, the first magnet, the second magnet and the top of the basin cooperate to drive the first diaphragm to vibrate; The second voice coil is connected to the second diaphragm, a part of the structure of the second voice coil extends into the first magnetic gap, a magnetic circuit is formed between the first magnet and the peripheral part, and the second voice coil, the first magnet and the peripheral part cooperate to drive the second diaphragm to vibrate.

2. The headset according to claim 1, characterized in that The basin top has a first through hole, a portion of the second magnet extends into the first through hole, and a gap exists between the portion of the second magnet extending into the first through hole and the first through hole.

3. The earphone according to claim 1, characterized in that The first magnet is an annular structure having a first side surface and a second side surface opposite to each other; the basin top is in contact with the first side surface.

4. The earphone according to claim 3, characterized in that The height direction of the first magnet is parallel to the direction from the first side surface to the second side surface; in the height direction of the first magnet, the height of the first magnet is not greater than the height of the second magnet.

5. The earphone according to claim 3 or 4, characterized in that: The basin top completely covers the first side.

6. The earphone according to any one of claims 1 to 4, characterized in that: The loudspeaker further includes a diaphragm. The first voice coil is fixed to one side of the first diaphragm, and the diaphragm is fixed to the other side opposite to the first diaphragm.

7. The earphone according to any one of claims 1 to 4, characterized in that: A first concave groove is formed on a side of the basin top facing the first diaphragm, and at least a part of the structure of the first voice coil can extend into the first concave groove.

8. The earphone according to claim 7, characterized in that The side of the basin top facing the first diaphragm has a recessed structure, the recessed structure is distributed circumferentially around the first recessed groove, and a first protrusion is formed between the recessed structure and the first recessed groove; the circumferential edge of the first diaphragm is connected to the surface of the recessed structure.

9. The earphone according to claim 8, characterized in that The loudspeaker further includes a first fixing ring, and a circumferential edge of the first diaphragm passes through the first fixing ring to be connected to the surface of the recessed structure.

10. The earphone according to claim 9, characterized in that The loudspeaker further includes a first protective cover, and a circumferential edge of the first diaphragm is clamped between the first protective cover and a first fixing ring.

11. The earphone according to claim 10, characterized in that The first protection cover is provided with a first sound outlet hole.

12. The headset according to claim 11, characterized in that The first sound outlet is installed with a damping cloth net.

13. The earphone according to any one of claims 1 to 4, characterized in that: The loudspeaker further includes a first washer, the first magnet is located between the top of the basin and the first washer, and the first washer, the second voice coil, the first magnet and the peripheral portion cooperate to drive the second diaphragm to vibrate.

14. The earphone according to any one of claims 1 to 4, characterized in that: The basin frame also includes a radial extension portion, the outer portion is cylindrical, the basin top is connected to one end of the outer portion, and the radial extension portion is connected to the other end opposite to the outer portion; a second sound outlet hole is opened on the radial extension portion.

15. The headset according to claim 14, characterized in that The loudspeaker further comprises a second protective cover, wherein the second protective cover is connected to the basin frame, and a circumferential edge of the second diaphragm is clamped between the radially extending portion and the second protective cover.

16. The headset according to claim 15, characterized in that The loudspeaker further includes a second fixing ring, wherein the second fixing ring is connected to the circumferential edge of the second diaphragm, and the circumferential edge of the second diaphragm is clamped between the second fixing ring and the second protective cover.

17. The headset according to claim 16, characterized in that The basin frame also includes an axial extension portion, which is connected to the radial extension portion; the axial extension portion is ring-shaped, the second protective cover is inserted into the axial extension portion, and the second fixing ring is located between the second protective cover and the radial extension portion.

18. The earphone according to claim 15, characterized in that The second protective cover is provided with a leakage hole.

19. The headset according to claim 18, characterized in that The second sound outlet hole is provided with a damping mesh; and / or the leakage hole is provided with a damping mesh.

20. The headset according to claim 19, characterized in that When the leakage hole is provided with a damping mesh, the second protective cover has a second recessed groove, the second recessed groove is recessed in the direction of the second diaphragm, the leakage hole is located at the bottom of the second recessed groove, the damping mesh is fixed in the second recessed groove, and the outer surface of the damping mesh is flush with the outer surface of the second protective cover.

21. The headset according to claim 20, characterized in that The inner surface of the second protective cover protrudes toward the direction where the second diaphragm is located, and forms an inner convex structure.

22. The earphone according to any one of claims 1 to 4, characterized in that: The frequency of the sound emitted by the first diaphragm is higher than the frequency of the sound emitted by the second diaphragm.

23. The earphone according to any one of claims 1 to 4, characterized in that: The first voice coil is a planar voice coil, and the second voice coil is a cylindrical voice coil.

24. The earphone according to any one of claims 1 to 4, characterized in that: The magnetization direction of the first magnet is opposite to the magnetization direction of the second magnet.

25. The earphone according to any one of claims 1 to 4, characterized in that: The speaker further includes a circuit board, which is fixed on the basin frame, and the first voice coil and the second voice coil are electrically connected to the circuit board respectively.

26. The earphone according to any one of claims 1 to 4, characterized in that: The earphone also includes a shell, and the speaker is arranged inside the shell.

27. A loudspeaker, characterized in that: include: A first magnet, a second magnet, a basin frame, a first voice coil, a first diaphragm, a second voice coil and a second diaphragm; The first magnet is arranged around the outer circumference of the second magnet, and there is a gap between the first magnet and the second magnet; the basin frame includes an outer portion and a basin top connected to the outer portion; the outer portion is arranged around the outer circumference of the first magnet, and there is a first magnetic gap between the outer portion and the first magnet; the first diaphragm and the second diaphragm are respectively located on two opposite sides of the basin top; The first voice coil is connected to the first diaphragm, a preset gap is formed between the first diaphragm and the top of the basin, the first voice coil is located in the preset gap, the first magnet and the top of the basin are combined to form a magnetic field with the second magnet. A magnetic circuit is formed between the first voice coil, the first magnet, the second magnet and the top of the basin, and the first voice coil, the first magnet, the second magnet and the top of the basin cooperate to drive the first diaphragm to vibrate; The second voice coil is connected to the second diaphragm, a part of the structure of the second voice coil extends into the first magnetic gap, a magnetic circuit is formed between the first magnet and the peripheral part, and the second voice coil, the first magnet and the peripheral part cooperate to drive the second diaphragm to vibrate.

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