Speaker and mobile terminal

Abstract

The application provides a loudspeaker and a mobile terminal, which comprise a frame, a magnetic circuit assembly, a diaphragm assembly and a skeleton. The magnetic circuit assembly is arranged in the frame, the diaphragm assembly comprises a diaphragm and a voice coil, and the voice coil is arranged in the magnetic circuit assembly. In the radial direction of the loudspeaker, the diaphragm is located on both sides of the magnetic circuit assembly. The diaphragm is mounted on the skeleton, and the voice coil transmits vibration to the diaphragm through the skeleton. The loudspeaker provided by the embodiment of the application does not need to reserve a vibration space for the diaphragm in the axial direction of the loudspeaker, in the case of thinning the whole loudspeaker, the space of the magnetic circuit assembly can be maximized to provide sufficient driving force to ensure sound effect, so as to meet the requirements of sound effect and thinning.

Description

Technical Field

[0001] This application relates to the field of acoustic and electronic technology, specifically to a loudspeaker and a mobile terminal. Background Technology

[0002] With the continuous advancement of multimedia technology, mobile terminals face various application scenarios such as audio and video playback, gaming, and digital photography, requiring them to have good audio playback capabilities and a relatively compact size. Therefore, the speakers in mobile terminals also need to be thinner and lighter. However, a good sound experience requires a larger speaker size to provide greater driving power, achieving a larger vibration amplitude and better low-frequency playback performance.

[0003] However, existing speaker technology struggles to balance the demands for both slimness and high-quality sound. Summary of the Invention

[0004] In view of this, this application provides a speaker and a mobile terminal to resolve the technical contradiction between sound quality and thinness in the prior art.

[0005] This application provides a loudspeaker, which includes:

[0006] Sink stand;

[0007] A magnetic circuit assembly, wherein the magnetic circuit assembly is disposed within the basin frame;

[0008] A diaphragm assembly, comprising a diaphragm and a voice coil; the voice coil is disposed in the magnetic circuit assembly; the diaphragm is located on both sides of the magnetic circuit assembly along the radial direction of the loudspeaker;

[0009] A frame, on which the diaphragm is mounted, and through which the voice coil transmits vibrations to the diaphragm.

[0010] The speaker provided in this application does not require a vibration space for the diaphragm in the axial direction of the speaker. With the overall thinning of the speaker, the space of the magnetic circuit assembly can be maximized to provide sufficient driving force to ensure sound quality, thus balancing the requirements of sound quality and thinness.

[0011] In one possible implementation, the skeleton includes a main body and mounting portions located on both sides of the main body; the main body and the mounting portions form a hollow portion;

[0012] The voice coil is disposed in the hollow portion and contacts the main body portion;

[0013] The diaphragm is mounted on the mounting portion;

[0014] The voice coil is used to transmit vibrations to the main body and the mounting portion, so as to cause the diaphragm to vibrate.

[0015] In the above scheme, the voice coil moves back and forth under the action of the magnetic field. Since the main body is in contact with the voice coil, the voice coil can transmit the vibration to the main body and then to the mounting part to make the diaphragm vibrate.

[0016] In one possible implementation, the frame further includes a cantilever; the cantilever connects the main body and the mounting portion.

[0017] The above solution ensures that the size of the mounting part is not too large and the space occupied by the cantilever is small, thus ensuring that the overall structure of the speaker is more compact.

[0018] In one possible implementation, the height of the main body is higher than that of the cantilever along the axial direction of the speaker.

[0019] In the above design, setting the cantilever lower provides a larger vibration space for the diaphragm. Setting the main body higher increases the contact area with the voice coil, thereby effectively transmitting vibrations.

[0020] In one possible implementation, the magnetic circuit assembly includes a bottom magnetic circuit assembly and a top magnetic circuit assembly; a central magnetic conductive sheet is disposed between the bottom magnetic circuit assembly and the top magnetic circuit assembly;

[0021] The bottom magnetic circuit assembly includes a bottom main magnet and a bottom outer magnet; the bottom main magnet is located inside the voice coil, and the bottom outer magnet is located outside the voice coil;

[0022] The top magnetic circuit assembly includes a top main magnet and a top outer magnet; the top main magnet is located inside the voice coil, and the top outer magnet is located outside the voice coil.

[0023] The bottom magnetic circuit assembly and the top magnetic circuit assembly can provide a magnetic field to cause the voice coil to move in the magnetic field.

[0024] In one possible implementation, the central magnetic sheet includes a central magnetic sheet and an outer magnetic sheet;

[0025] The central magnetic conductive sheet is disposed between the bottom main magnet and the top main magnet;

[0026] The outer magnetic sheet is disposed between the bottom outer magnet and the top outer magnet.

[0027] The above scheme constitutes a symmetrical magnetic circuit assembly, which has a strong driving force for thinner speakers.

[0028] In one possible implementation, the outer magnetic sheet and the central magnetic sheet are at the same height along the axial direction of the loudspeaker.

[0029] The outer magnetic sheet and the central magnetic sheet are located in a plane with approximately the same height. The voice coil is placed in a magnetic field and is also located in a plane with approximately the same height as the diaphragm. While ensuring effective vibration transmission, the assembly of the magnetic circuit assembly and the diaphragm assembly is more flat and thin.

[0030] In one possible implementation, the bottom magnetic circuit assembly further includes a bottom magnetic guide sheet; the bottom magnetic guide sheet is mounted on the bottom of the bottom main magnet and the bottom outer magnet;

[0031] The top magnetic circuit assembly also includes a top magnetic guide sheet; the top magnetic guide sheet is mounted on top of the top main magnet and the top outer magnet.

[0032] The above scheme enables the magnetic circuit assembly to have greater driving force.

[0033] In one possible implementation, the top magnetic sheet includes a body and an extension; the extension is connected to the body, extends along the axial direction of the speaker, and is connected to the outer magnetic sheet.

[0034] In the above scheme, the main body can fit with the top main magnet, and the extension is used to directly connect to the external magnetic sheet in the space where the top external magnet is not arranged. This provides space for the arrangement of the diaphragm and also allows the diaphragm to have enough vibration space to ensure the sound effect of the speaker.

[0035] In one possible implementation, the number of the top external magnets is two; along the width direction of the speaker, the two top external magnets are respectively located on both sides of the top main magnet;

[0036] The number of diaphragms is two; along the length of the loudspeaker, the two diaphragms are located on both sides of the voice coil.

[0037] In the above scheme, the diaphragm is set on both sides of the speaker's length direction. To make the speaker thinner, the top external magnet is set on both sides of the top main magnet along the width direction, thereby taking into account the larger driving force of the thin magnetic circuit assembly.

[0038] In one possible implementation, a ring-shaped fold structure is provided on the diaphragm along the circumference.

[0039] In the above scheme, by setting the folded ring structure, the diaphragm can have appropriate rigidity, thereby ensuring the low-frequency performance of the speaker.

[0040] A second aspect of this application provides a mobile terminal, including a housing and a speaker installed within the housing, wherein the speaker is any of the speakers described above.

[0041] The mobile terminal provided in this application embodiment has a speaker with good sound effect and a thin profile, which is beneficial to the thin design of the mobile terminal. Attached Figure Description

[0042] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments 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.

[0043] Figure 1 This is a schematic diagram of the structure of a loudspeaker in related technologies;

[0044] Figure 2 This is a schematic diagram of the structure of a loudspeaker provided in an embodiment of this application;

[0045] Figure 3 This is an exploded view of a loudspeaker provided in an embodiment of this application;

[0046] Figure 4 A top view of a loudspeaker provided in an embodiment of this application;

[0047] Figure 5 for Figure 4 BB-direction sectional view in the middle;

[0048] Figure 6 for Figure 4 CC-direction section view;

[0049] Figure 7 This is a schematic diagram of the structure of the top magnetic conductive sheet in a loudspeaker provided in an embodiment of this application;

[0050] Figure 8 This is a schematic diagram of the structure of the frame in the loudspeaker provided in an embodiment of this application;

[0051] Figure 9 A front view of the frame in a loudspeaker provided in an embodiment of this application;

[0052] Figure 10 A schematic diagram illustrating the working principle of a loudspeaker provided in an embodiment of this application.

[0053] Explanation of reference numerals in the attached figures:

[0054] 10′ - Diaphragm assembly;

[0055] 101′ - Diaphragm;

[0056] 102′ - Voice coil;

[0057] 103′-Pourer stand;

[0058] 104′ - Top of the ball;

[0059] 20′ - Magnetic circuit assembly;

[0060] 201′ - Central magnet;

[0061] 202′-Side magnet;

[0062] L - Magnetic gap;

[0063] A-lower vibration space;

[0064] 100-speaker;

[0065] 10 - Diaphragm assembly;

[0066] 101 - Diaphragm;

[0067] 101a - Folded ring structure;

[0068] 102 - Voice coil;

[0069] 20 - Magnetic circuit assembly;

[0070] 210 - Bottom magnetic circuit assembly;

[0071] 211 - Bottom main magnet;

[0072] 212 - Bottom outer magnet;

[0073] 213 - Bottom magnetic plate;

[0074] 220 - Top magnetic circuit assembly;

[0075] 221 - Top main magnet;

[0076] 222 - Top external magnet;

[0077] 223 - Top magnetic plate;

[0078] 223a-Ontology;

[0079] 223b - Extension;

[0080] 230 - Central magnetic conductive sheet;

[0081] 231 - Central magnetic plate;

[0082] 232 - External magnetic sheet;

[0083] 30-Pourer stand;

[0084] 40-Skeleton;

[0085] 41-Main body;

[0086] 42-Installation Section;

[0087] 43-Hollow section;

[0088] 44-Cantilever;

[0089] 50 - Flexible circuit board;

[0090] 60-Gasket. Detailed Implementation

[0091] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0092] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0093] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0094] In mobile terminals such as smartphones, an external audio playback device, such as a speaker, is required to play multimedia information like audio and video. The speaker is located inside the mobile terminal's casing and emits sound through a sound outlet on the casing. The mobile terminal in this embodiment may include a mobile phone, tablet computer, personal digital assistant (PDA), point-of-sales (POS) terminal, in-vehicle computer, etc.

[0095] To enable a loudspeaker to produce sound, it can include a diaphragm assembly, a magnetic circuit assembly, etc., and sound is produced through the relative movement of the diaphragm assembly and the magnetic circuit assembly. The following is a detailed description of the specific structure of each component in a loudspeaker.

[0096] like Figure 1 As shown, a loudspeaker in the prior art includes a magnetic circuit assembly 20', which can be used to provide a magnetic field to cause the diaphragm assembly 10' to vibrate under the action of the magnetic field force. The magnetic circuit assembly 20' may specifically include a center magnet 201' and a side magnet 202', and a magnetic gap L may be formed between the center magnet 201' and the side magnet 202'.

[0097] The diaphragm assembly 10' includes components such as a diaphragm 101' and a voice coil 102'. The voice coil 102' is located on the outer periphery of the diaphragm 101' and inserted into the magnetic gap L of the magnetic circuit assembly 20', thus placing it within the magnetic field of the magnetic circuit assembly 20'. When an audio current is passed through the voice coil 102', the voice coil 102' moves along the axial direction of the speaker under the influence of the magnetic field of the magnetic circuit assembly 20'. Figure 1 The Z-axis of the diaphragm moves back and forth, causing the diaphragm 101' to vibrate accordingly. When the diaphragm 101' vibrates, it can cause the surrounding air to vibrate and emit sound waves.

[0098] Since the diaphragm 101' is a flexible component capable of deformation, it can be connected to the frame 103' of the supporting structure for support and fixation. In the prior art, the frame 103' can be considered part of the diaphragm assembly 10' during assembly. After the frame 103' is fixed, the center of the diaphragm 101' reciprocates under the drive of the voice coil 102' and produces sound. The center of the diaphragm 101' may have a dome 104'.

[0099] To ensure that the diaphragm 101' has sufficient space to vibrate and produce sound, the diaphragm 101' and the magnetic circuit assembly 20' need to have a certain distance in the speaker's axial direction (Z direction). This distance is also called the lower vibration space A. Figure 1 As shown.

[0100] In order to achieve the desired sound effect of the speaker, the size of the lower vibration space A is usually designed to be close to the amplitude of the diaphragm 101′. Therefore, the speakers in the existing technology are not conducive to the current demand for lightweight and thin mobile terminals.

[0101] In view of this, embodiments of this application provide a speaker that can meet the requirements of speaker thinness while ensuring good sound effect.

[0102] like Figure 2 As shown, this application embodiment provides a loudspeaker 100, which includes a frame 30, a magnetic circuit assembly 20, and a diaphragm assembly 10. The diaphragm assembly 10 includes a diaphragm 101.

[0103] The frame 30 serves as a support in the speaker 100. The magnetic circuit assembly 20 is disposed inside the frame 30, and the diaphragm assembly 10 vibrates accordingly under the influence of the magnetic field.

[0104] like Figure 3 As shown, the basket 30 can be a general frame structure, with the middle area mainly used to support and install the magnetic circuit assembly 20 and the voice coil 102 in the diaphragm assembly 10, while the diaphragm 101 in the diaphragm assembly 10 corresponds to the two sides of the basket 30.

[0105] A flexible circuit board 50 can also be installed on the frame 30 to realize the sound-to-electric conversion. The voice coil 102 can move back and forth along the axial direction (Z direction) of the speaker 100 under the action of the magnetic field of the magnetic circuit assembly 20. The diaphragm 101 is mounted on the frame 40. The voice coil 102 transmits the vibration to the diaphragm 101 through the frame 40, so that the diaphragm 101 vibrates accordingly.

[0106] The magnetic circuit assembly 20 may include a bottom magnetic circuit assembly 210 and a top magnetic circuit assembly 220, wherein a central magnetic conductive sheet 230 is disposed between the bottom magnetic circuit assembly 210 and the top magnetic circuit assembly 220. The bottom magnetic circuit assembly 210 includes a bottom main magnet 211 and a bottom outer magnet 212. The bottom main magnet 211 is located inside the voice coil 102, and the bottom outer magnet 212 is located outside the voice coil 102. It is understood that a magnetic gap can be formed between the bottom main magnet 211 and the bottom outer magnet 212, and the voice coil 102 is in the magnetic field of the magnetic circuit assembly 20, moving back and forth under the action of the magnetic field. There may be multiple bottom outer magnets 212, distributed at different positions around the bottom main magnet 211.

[0107] In an alternative embodiment, spacers 60 may also be provided on both sides of the bottom magnetic circuit assembly 210.

[0108] The top magnetic circuit assembly 220 includes a top main magnet 221 and a top outer magnet 222. The top main magnet 221 is located inside the voice coil 102, and the top outer magnet 222 is located outside the voice coil 102. This causes the voice coil 102 to be located in the magnetic gap of the magnetic circuit assembly 20 and to move back and forth under the action of the magnetic field.

[0109] In one possible implementation, the central magnetic guide plate 230 includes a central magnetic guide plate 231 and outer magnetic guide plates 232. The central magnetic guide plate 231 is disposed between the bottom main magnet 211 and the top main magnet 221. The outer magnetic guide plates 232 are disposed between the bottom outer magnet 212 and the top outer magnet 222. Similarly, the central magnetic guide plate 231 and the outer magnetic guide plates 232 are spaced apart to form a magnetic gap. Multiple outer magnetic guide plates 232 may be present and distributed at different positions around the central magnetic guide plate 231.

[0110] In the speaker 100 provided in this application embodiment, the magnetic circuit assembly 20 is provided with a bottom magnetic circuit assembly 210, a central magnetic sheet 231 and a top magnetic circuit assembly 220 in sequence along the axial direction. The magnetic circuit assembly 20 has a large thickness and a large driving force, which helps to improve the sound effect.

[0111] like Figure 4 The image shown is a top view of the speaker 100 provided in an embodiment of this application. Please refer to... Figure 5 ,for Figure 4 In a cross-sectional view along line BB, in one possible embodiment, the bottom magnetic circuit assembly 210 further includes a bottom magnetic guide plate 213, which is mounted on the bottom of the bottom main magnet 211 and the bottom outer magnet 212. The top magnetic circuit assembly 220 further includes a top magnetic guide plate 223, which is mounted on the top of the top main magnet 221 and the top outer magnet 222.

[0112] Reference Figure 5 As shown, along the axial direction Z of the speaker 100, the middle region of the magnetic circuit assembly 20 includes, from bottom to top, a bottom magnetic conductive sheet 213, a bottom main magnet 211, a center magnetic conductive sheet 231, a top main magnet 221, and a top magnetic conductive sheet 223, forming a symmetrical magnetic circuit assembly 20. For the relatively thin speaker 100, the magnetic circuit assembly 20 has a strong driving force.

[0113] like Figure 5 As shown, in the radial length direction X of the speaker 100, in the region outside the middle region of the magnetic circuit assembly 20, from bottom to top, there are attached bottom magnetic conductive sheet 213, bottom outer magnet 212, outer magnetic conductive sheet 232 and top magnetic conductive sheet 223, thereby further increasing the driving force of the magnetic circuit assembly 20.

[0114] Please refer to Figure 6 ,for Figure 4 In the CC-direction cross-sectional view of the speaker 100, in the region outside the middle region of the magnetic circuit assembly 20, from bottom to top, there are attached bottom magnetic conductive sheet 213, bottom outer magnet 212, outer magnetic conductive sheet 232, top outer magnet 222 and top magnetic conductive sheet 223, thereby further increasing the driving force of the magnetic circuit assembly 20.

[0115] Please continue to refer to Figures 3 to 5 The voice coil 102 is disposed in the magnetic circuit assembly 20. The diaphragm 101 is located on both sides of the magnetic circuit assembly 20 along the radial direction of the speaker 100. In one specific embodiment, the diaphragm 101 is located on both sides of the magnetic circuit assembly 20 along the length direction X. In other embodiments, the diaphragm 101 may also be located on both sides of the magnetic circuit assembly 20 along the width direction Y.

[0116] In this way, the magnetic circuit assembly 20 of the speaker 100 is located in the middle region, without the need to leave vibration space for the diaphragm 101 in the axial direction Z of the speaker 100. With the overall thinning of the speaker 100, the space of the magnetic circuit assembly 20 can be maximized to provide sufficient driving force to ensure sound effect, thus taking into account both sound effect and thinness requirements.

[0117] Reference Figure 5In order to ensure the vibration space of the diaphragm 101 and at the same time ensure the thinness, when the diaphragm 101 is located on both sides of the magnetic circuit assembly 20 along the length direction X, no external magnets are set on both sides of the top main magnet 221. In order to maximize the driving force, two top external magnets 222 can be set along the width direction Y of the speaker 100. The two top external magnets 222 are located on both sides of the top main magnet 221, thereby increasing the driving force of the magnetic circuit assembly 20.

[0118] In the space where the top outer magnet 222 is not arranged, the top magnetic sheet 223 is directly connected to the outer magnetic sheet 232.

[0119] Specifically, refer to Figure 7 The top magnetic guide plate 223 may include a body 223a and an extension 223b. The extension 223b is connected to the body 223a, extends along the Z-axis of the speaker 100, and is connected to the outer magnetic guide plate 232. It is understood that the top magnetic guide plate 223 can be a one-piece structure, that is, the body 223a and the extension 223b are a single unit. The body 223a can fit against the top main magnet 221, while the extension 223b is used to directly connect to the outer magnetic guide plate 232 in the space where the top outer magnet 222 is not located. This provides space for the arrangement of the diaphragm 101 and allows the diaphragm 101 sufficient vibration space to ensure the sound effect of the speaker 100.

[0120] To further ensure the slimness of the loudspeaker 100, the outer magnetic sheet 232 and the central magnetic sheet 231 are at the same height along the axial direction Z of the loudspeaker 100. That is, the outer magnetic sheet 232 and the central magnetic sheet 231 are located in a plane with approximately the same height. The voice coil 102 is placed in a magnetic field and is also located in a plane with approximately the same height as the diaphragm 101. While ensuring effective vibration transmission, the assembly of the magnetic circuit assembly 20 and the diaphragm assembly 10 is more flat and thinner.

[0121] In the speaker 100 provided in the embodiments of this application, such as Figure 3 and Figure 5 As shown, the voice coil 102 and the diaphragm 101 are connected by the skeleton 40, enabling the driving force of the voice coil 102 to coordinate the vibration of the diaphragm 101. In the prior art, vibration is transmitted along the axial direction Z, which inevitably increases the thickness of the speaker. However, in this embodiment, the voice coil 102 transmits the vibration in the axial direction Z to the diaphragms 101 on both sides through the skeleton 40, ensuring the requirement for a thin speaker 100. At the same time, the magnetic circuit assembly 20 with sufficient driving force in the middle region of the speaker 100 provides driving force, ensuring sound quality and resolving the technical contradiction between speaker sound performance and thinness.

[0122] like Figure 8As shown, in one specific embodiment, the frame 40 includes a main body 41 and mounting portions 42 located on both sides of the main body 41. The main body 41 may be sheet-like, and its function is to contact the voice coil 102 to transmit vibration. The main body 41 and the mounting portions 42 form a hollow portion 43, which provides mounting space for the magnetic circuit assembly 20 and the voice coil 102.

[0123] Voice coil 102 is disposed in the hollow portion 43 and contacts the main body portion 41. Voice coil 102 moves back and forth under the influence of a magnetic field. Since the main body portion 41 is in contact with voice coil 102, voice coil 102 can transmit vibrations to the main body portion 41. Diaphragm 101 is mounted on mounting portion 42. Voice coil 102 transmits vibrations to the main body portion 41 and mounting portion 42, causing diaphragm 101 to vibrate.

[0124] In this embodiment, the frame 40 can be a one-piece molded structure, and the mounting part 42 can be a platform structure with a flat upper surface for mounting the diaphragm 101. The frame 40 has a simple structure and does not occupy a large space inside the speaker 100. The main body 41 is in the shape of a thin sheet and fits against the voice coil 102, which is beneficial to the compactness of the overall structure of the speaker 100.

[0125] like Figure 9 As shown, the frame 40 may also include a cantilever 44, which extends along the length direction X and connects the main body 41 and the mounting part 42. In order to ensure that the overall structure of the speaker 100 is more compact and the size of the mounting part 42 is not too large, the vibration of the main body 41 can be transmitted to the mounting part 42 by setting the cantilever 44, and the space occupied by the cantilever 44 is small.

[0126] In one specific implementation, refer to Figure 9 Along the axial direction Z of the loudspeaker 100, the height of the main body 41 is higher than that of the cantilever 44. Setting the cantilever 44 lower provides a larger vibration space for the diaphragm 101. Setting the main body 41 higher increases the contact area with the voice coil 102, thereby effectively transmitting vibrations.

[0127] like Figure 10The diagram shows a simplified cross-sectional view of the loudspeaker 100 provided in this embodiment. Along the axial direction Z of the loudspeaker 100, the entire thickness of the central region is composed of the magnetic circuit assembly 20. From bottom to top, the central region consists of a bottom magnetic guide sheet 213, a bottom main magnet 211, a center magnetic guide sheet 231, a top main magnet 221, and a top magnetic guide sheet 223, thereby providing maximized driving force and ensuring the sound effect of the loudspeaker 100. The voice coil 102 is disposed outside the bottom main magnet 211, the center magnetic guide sheet 231, and the top main magnet 221, and can partially fit against the frame 40. The two sides of the frame 40 are fitted against the diaphragm 101, allowing the voice coil 102 to move back and forth, transmitting vibrations through the frame 40 to the diaphragm 101, causing the diaphragm 101 to vibrate and thus vibrate the surrounding air. The diaphragm 101 and the magnetic circuit assembly 20 are distributed radially, thereby ensuring the thinness of the loudspeaker 100. Therefore, the speaker 100 provided in this application embodiment can achieve both sound quality and a thinner profile.

[0128] In one possible implementation, a folded ring structure 101a is provided around the diaphragm 101. By providing the folded ring structure 101a, the diaphragm 101 can have suitable rigidity, thereby ensuring the low-frequency performance of the speaker 100.

[0129] This application embodiment also provides a mobile terminal, including a housing and a speaker 100 installed in the housing. The speaker 100 has the characteristics of balancing sound quality and thinness, which is conducive to the overall thin design of the mobile terminal.

[0130] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this application. The above description is only a preferred embodiment of this application, but this application does not limit the scope of implementation to what is shown in the drawings. Any changes made in accordance with the concept of this application, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, should be within the protection scope of this application.

Claims

1. A loudspeaker, characterized in that, include: Sink stand; A magnetic circuit assembly, wherein the magnetic circuit assembly is disposed within the basin frame; A diaphragm assembly, the diaphragm assembly including a diaphragm and a voice coil; the voice coil is disposed in the magnetic circuit assembly; Along the radial direction of the loudspeaker, the diaphragm is located on both sides of the magnetic circuit assembly; A frame, the diaphragm is mounted on the frame, and the voice coil transmits vibrations to the diaphragm through the frame; The magnetic circuit assembly includes a bottom magnetic circuit assembly and a top magnetic circuit assembly; a central magnetic conductive sheet is disposed between the bottom magnetic circuit assembly and the top magnetic circuit assembly; The bottom magnetic circuit assembly includes a bottom main magnet and a bottom outer magnet; the bottom main magnet is located inside the voice coil, and the bottom outer magnet is located outside the voice coil; The top magnetic circuit assembly includes a top main magnet and a top outer magnet; the top main magnet is located inside the voice coil, and the top outer magnet is located outside the voice coil; The bottom magnetic circuit assembly further includes a bottom magnetic conductive sheet; the bottom magnetic conductive sheet is installed at the bottom of the bottom main magnet and the bottom outer magnet; The top magnetic circuit assembly also includes a top magnetic guide sheet; the top magnetic guide sheet is mounted on top of the top main magnet and the top outer magnet.

2. The loudspeaker according to claim 1, characterized in that, The frame includes a main body and mounting portions located on both sides of the main body; the main body and the mounting portions form a hollow section; The voice coil is disposed in the hollow portion and contacts the main body portion; The diaphragm is mounted on the mounting portion; The voice coil is used to transmit vibrations to the main body and the mounting portion, so as to cause the diaphragm to vibrate.

3. The loudspeaker according to claim 2, characterized in that, The frame also includes a cantilever; the cantilever connects the main body and the mounting part.

4. The loudspeaker according to claim 3, characterized in that, Along the axial direction of the loudspeaker, the height of the main body is higher than that of the cantilever.

5. The loudspeaker according to claim 1, characterized in that, The central magnetic sheet includes a central magnetic sheet and an outer magnetic sheet; The central magnetic conductive sheet is disposed between the bottom main magnet and the top main magnet; The outer magnetic sheet is disposed between the bottom outer magnet and the top outer magnet.

6. The loudspeaker according to claim 5, characterized in that, Along the axial direction of the loudspeaker, the outer magnetic sheet and the central magnetic sheet are at the same height.

7. The loudspeaker according to claim 1, characterized in that, The top magnetic conductive sheet includes a body and an extension; the extension is connected to the body, extends along the axial direction of the speaker, and is connected to the outer magnetic conductive sheet.

8. The loudspeaker according to claim 1, characterized in that, The number of the top external magnets is two; along the width direction of the speaker, the two top external magnets are respectively located on both sides of the top main magnet; The number of diaphragms is two; along the length of the loudspeaker, the two diaphragms are located on both sides of the voice coil.

9. The loudspeaker according to claim 8, characterized in that, The diaphragm has a ring-shaped structure along its upper edge.

10. A mobile terminal, comprising a housing and a speaker mounted within the housing, characterized in that, The loudspeaker is the loudspeaker according to any one of claims 1-9.

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