Speakers and electronic devices

Abstract

This application provides a loudspeaker and an electronic device. The loudspeaker includes a housing; a vibration assembly including a diaphragm and a diaphragm drive coil connected to the diaphragm; a magnetic circuit assembly and a drive assembly. The magnetic circuit assembly has a gap, and the diaphragm drive coil is opposite to the gap. The magnetic circuit assembly drives the vibration assembly to vibrate in the receiving cavity, and the drive assembly drives the magnetic circuit assembly to vibrate with the vibration assembly, thereby improving the linearity of the vibration of the diaphragm drive coil and the acoustic effect of the loudspeaker.

Description

Technical Field

[0001] This application belongs to the field of acoustic technology, specifically relating to a loudspeaker and an electronic device. Background Technology

[0002] In related technologies, as electronic devices continuously improve their sound production and reception quality, the number of speakers mounted on these devices is also increasing. Taking the dynamic speaker in a mobile phone as an example, the speaker unit of a dynamic speaker includes a diaphragm and a voice coil. When an alternating current is passed through the voice coil, it will vibrate up and down in a fixed magnetic field, thereby driving the diaphragm to vibrate up and down to produce sound.

[0003] Figure 15 A schematic diagram of an existing moving-coil loudspeaker is shown. The existing moving-coil loudspeaker includes a conventional diaphragm 101, a conventional magnetic sheet 102, a conventional center magnet 103, a conventional side magnet 104, a conventional coil 105, a conventional frame 106, and a conventional surround 107. Because the magnetic field strength in the magnetic gap formed by the conventional magnetic sheet 102, the conventional center magnet 103, and the conventional side magnet 104 is not uniform, and the conventional magnetic sheet 102, the conventional center magnet 103, and the conventional side magnet 104 remain stationary, the magnetic force experienced by the conventional coil 105 relative to the magnetic circuit assembly will continuously change during the vibration process. Moreover, the more the conventional coil 105 deviates from the strong magnetic region in the gap, the less the amplitude of the conventional diaphragm 101 can reach the ideal state, resulting in a smaller sound transmission of the existing moving-coil loudspeaker. In addition, the distortion of the existing moving-coil loudspeaker increases, reducing the acoustic effect of the existing moving-coil loudspeaker. Summary of the Invention

[0004] This application aims to provide a loudspeaker and electronic device that can solve the problem of low acoustic performance of existing loudspeakers.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of this application provide a loudspeaker, comprising:

[0007] A housing having a cavity within it, the cavity containing a vibration assembly, a magnetic circuit assembly, and a drive assembly;

[0008] The vibration assembly includes a diaphragm and a diaphragm drive coil, wherein the diaphragm drive coil is connected to the diaphragm;

[0009] The magnetic circuit assembly has a gap, the diaphragm drive coil is opposite to the gap, the magnetic circuit assembly drives the vibration assembly to vibrate in the receiving cavity, and the drive assembly drives the magnetic circuit assembly to vibrate with the vibration assembly.

[0010] Secondly, embodiments of this application provide an electronic device including the speaker described in the first aspect.

[0011] This application provides a loudspeaker, the loudspeaker including a housing; a vibration assembly including a diaphragm and a diaphragm drive coil connected to the diaphragm; a magnetic circuit assembly and a drive assembly, the magnetic circuit assembly having a gap, the diaphragm drive coil being opposite to the gap, the magnetic circuit assembly driving the vibration assembly to vibrate in the receiving cavity, and the drive assembly driving the magnetic circuit assembly to vibrate with the vibration assembly, thereby improving the linearity of the vibration of the diaphragm drive coil and the acoustic effect of the loudspeaker.

[0012] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0014] Figure 1 This is a schematic diagram of a loudspeaker according to an embodiment of this application;

[0015] Figure 2 This is a schematic diagram showing the attraction between a first magnetic component and a second magnetic component of a loudspeaker according to an embodiment of this application;

[0016] Figure 3 This is a schematic diagram showing the mutual repulsion between the first magnetic element and the second magnetic element of a loudspeaker according to an embodiment of this application;

[0017] Figure 4 yes Figure 1 A magnified view of a portion of the image;

[0018] Figure 5 This is a schematic diagram of another loudspeaker according to an embodiment of this application;

[0019] Figure 6 This is a schematic diagram of the first magnetic element of another loudspeaker according to an embodiment of this application;

[0020] Figure 7 yes Figure 5 A magnified view of a portion of the image;

[0021] Figure 8 This is a schematic diagram of another front housing of another speaker according to an embodiment of this application;

[0022] Figure 9 This is a schematic diagram of another loudspeaker according to an embodiment of this application;

[0023] Figure 10 This is a schematic diagram of the electro-deformable element of a loudspeaker being compressed according to another embodiment of this application.

[0024] Figure 11 This is a schematic diagram of the electro-deformable element of a loudspeaker under tension according to another embodiment of this application.

[0025] Figure 12 yes Figure 9 A magnified view of a portion of the image;

[0026] Figure 13 yes Figure 10 A schematic diagram of an electro-optical deformation device;

[0027] Figure 14 yes Figure 11 A schematic diagram of an electro-optical deformation device;

[0028] Figure 15 This is a schematic diagram of a moving-coil loudspeaker in the prior art.

[0029] Figure label:

[0030] 1. Housing; 11. Front housing; 12. Rear housing; 2. Vibration assembly; 21. Diaphragm; 211. Vibrating plate; 212. Folded ring; 22. Diaphragm drive coil; 3. Magnetic circuit assembly; 31. Magnetic yoke; 32. Central magnet; 33. Side magnet; 34. Magnetic sheet; 341. Central magnetic sheet; 342. Side magnetic sheet; 35. Gap; 351. First region; 352. Second region; 4. Drive assembly; 41. First magnetic component; 42. Second magnetic component; 43. Telescopic component; 5. Elastic component; 6. Adhesive component. Detailed Implementation

[0031] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] The following is combined Figure 1 - Figure 4 This application describes a speaker and an electronic device according to embodiments thereof.

[0036] like Figure 1 As shown, according to some embodiments of this application, a loudspeaker is provided, the loudspeaker comprising:

[0037] The housing 1 has a cavity inside, which contains a vibration assembly 2, a magnetic circuit assembly 3, and a drive assembly 4.

[0038] See Figure 1 The vibration component 2 includes a diaphragm 21 and a diaphragm drive coil 22. The diaphragm 21 can be configured such that its periphery is connected to the housing 1, and the diaphragm drive coil 22 is connected to the diaphragm 21. In the loudspeaker, the diaphragm drive coil 22 can vibrate in a magnetic field when an input current is applied, thereby driving the diaphragm 21 to vibrate to convert between electrical signals and vibration signals, so as to realize the sound output of the loudspeaker.

[0039] See Figure 1The magnetic circuit assembly 3 has a gap 35, and the diaphragm driving coil 22 is opposite to the gap 35, for example, the diaphragm driving coil 22 can be inserted into the gap 35; the magnetic circuit assembly 3 drives the vibration assembly 2 to vibrate in the receiving cavity, and the driving assembly 4 can be connected between the magnetic circuit assembly 3 and the housing 1 to drive the magnetic circuit assembly 3 to vibrate with the vibration assembly 2.

[0040] Specifically, when the speaker is not transmitting sound, the vibration assembly 2 and the magnetic circuit assembly 3 are both relatively stationary within the housing 1. No current flows through the diaphragm drive coil 22, and at least a portion of the diaphragm drive coil 22 is inserted into the gap. In one embodiment, the magnetic field formed by the magnetic circuit assembly 3 in the gap includes a strong magnetic region and a weak magnetic region. The magnetic field strength of the strong magnetic region is greater than that of the weak magnetic region. The diaphragm drive coil 22 is located in the strong magnetic region of the magnetic circuit assembly 3, that is, the diaphragm drive coil 22 is located in the gap region with a relatively strong magnetic field.

[0041] When the loudspeaker transmits sound, current is input into the diaphragm drive coil 22, and since at least part of the diaphragm drive coil 22 is located in the gap, the diaphragm drive coil 22 will reciprocate under the action of electromagnetic induction, thereby driving the diaphragm 21 to reciprocate.

[0042] In the speaker provided in this embodiment, the driving component 4 can provide the magnetic circuit component 3 with the power to vibrate. See [link to relevant documentation]. Figure 1 and Figure 2 For example, when the diaphragm drive coil 22 drives the diaphragm 21 to move along the first direction Y, the drive assembly 4 drives the magnetic circuit assembly 3 to move along the first direction Y. Or see Figure 3 When the diaphragm drive coil 22 drives the diaphragm 21 to move in a direction opposite to the first direction Y, the drive assembly 4 drives the magnetic circuit assembly 3 to move in a direction opposite to the first direction Y, so that the magnetic circuit assembly 3 is movably connected to the housing 1; moreover, when the vibration assembly 2 vibrates, the magnetic circuit assembly 3 can vibrate synchronously with the vibration assembly 2, so that the diaphragm drive coil 22 is kept in the stable magnetic field region of the magnetic circuit assembly 3, improving the linearity of the vibration of the diaphragm drive coil 22, reducing the distortion of the speaker, and improving the acoustic effect of the speaker.

[0043] The loudspeaker provided in this embodiment includes a housing 1; a vibration assembly 2, which includes a diaphragm 21 and a diaphragm drive coil 22, wherein the periphery of the diaphragm 21 is connected to the housing 1 and the diaphragm drive coil 22 is connected to the diaphragm 21; a magnetic circuit assembly 3 and a drive assembly 4, wherein the magnetic circuit assembly 3 has a gap, and the diaphragm drive coil 22 is opposite to the gap. When the vibration assembly 2 vibrates, the drive assembly 4 can drive the magnetic circuit assembly 3 to follow the vibration of the vibration assembly 2, thereby improving the linearity of the vibration of the diaphragm drive coil 22 and the acoustic effect of the loudspeaker.

[0044] Optionally, the drive component 4 is connected to the magnetic circuit component 3 on the side near the vibration component 2.

[0045] Specifically, based on the connection of the drive assembly 4 between the magnetic circuit assembly 3 and the housing 1, see... Figures 1 to 3 When the driving component 4 is connected to the magnetic circuit component 3 on the side near the vibration component 2, the driving component 4 can provide the magnetic circuit component 3 with a pulling or pushing force for vibration. That is, when the driving component 4 pulls the magnetic circuit component 3 along the first direction Y, the driving component 4 can cause the magnetic circuit component 3 to move along the first direction Y. Figure 2 As shown; when the driving component 4 pushes the magnetic circuit component 3 in a direction opposite to the first direction Y, the driving component 4 can cause the magnetic circuit component 3 to move in a direction opposite to the first direction Y, such as... Figure 3 As shown; so that the magnetic circuit assembly 3 can vibrate in the same direction as the vibration assembly 2, and the diaphragm drive coil 22 is kept in the stable magnetic field region of the magnetic circuit assembly 3, thereby improving the linearity of the vibration of the diaphragm drive coil 22.

[0046] In one embodiment, see Figures 1 to 3 The housing 1 includes a detachably connected front housing 11 and a rear housing 12. The vibration assembly 2 is connected to the front housing 11, and the drive assembly 4 is located between the front housing 11 and the magnetic circuit assembly 3.

[0047] Optionally, the drive component 4 is connected to the side of the magnetic circuit component 3 away from the vibration component 2.

[0048] Specifically, see Figure 5With the driving component 4 connected between the magnetic circuit component 3 and the housing 1, when the driving component 4 is connected to the side of the magnetic circuit component 3 away from the vibration component 2, the driving component 4 can provide the magnetic circuit component 3 with a pulling or pushing force for vibration. That is, when the driving component 4 pushes the magnetic circuit component 3 along the first direction Y, the driving component 4 can make the magnetic circuit component 3 move along the first direction Y; and when the driving component 4 pulls the magnetic circuit component 3 in a direction opposite to the first direction Y, the driving component 4 can make the magnetic circuit component 3 move in a direction opposite to the first direction Y, so that the magnetic circuit component 3 can vibrate in the same direction as the vibration component 2, and keep the diaphragm driving coil 22 in the stable magnetic field region of the magnetic circuit component 3.

[0049] In one embodiment, see Figures 1 to 3 The housing 1 includes a detachably connected front housing 11 and a rear housing 12. The vibration assembly 2 is connected to the front housing 11, and the drive assembly 4 is located between the rear housing 12 and the magnetic circuit assembly 3.

[0050] Optionally, see Figures 1 to 8 The driving component 4 includes a first magnetic element 41 and a second magnetic element 42. The first magnetic element 41 is disposed on the housing 1, and the second magnetic element 42 is disposed on the magnetic circuit component 3. The second magnetic element 42 cooperates with the first magnetic element 41 to make the magnetic circuit component 3 vibrate with the vibration component 2.

[0051] In the loudspeaker provided in this embodiment, the electromagnetic interaction between the second magnetic element 42 and the first magnetic element 41 allows the driving assembly 4 to provide the magnetic circuit assembly 3 with vibration power, for example, see [link to relevant documentation]. Figure 5 When a repulsive force is generated between the second magnetic element 42 and the first magnetic element 41, the driving component 4 can cause the magnetic circuit component 3 to move along the first direction Y. When an attractive force is generated between the second magnetic element 42 and the first magnetic element 41, the driving component 4 can cause the magnetic circuit component 3 to move in the opposite direction to the first direction Y. When the magnetic circuit component 3 is movably connected to the housing 1 and the vibration component 2 is vibrating, the magnetic circuit component 3 can vibrate in the same direction as the vibration component 2, so that the diaphragm driving coil 22 is kept in the stable magnetic field region of the magnetic circuit component 3, improving the linearity of the vibration of the diaphragm driving coil 22, reducing the distortion of the speaker, and improving the acoustic effect of the speaker.

[0052] Furthermore, when the magnetic circuit assembly 3 and the vibration assembly 2 vibrate in the same direction, the problem of nonlinear reduction of the BL (dynamic factor) of the loudspeaker under large amplitude conditions can be improved, and the relative position of the diaphragm drive coil 22 in the magnetic field generated by the magnetic circuit assembly 3 remains basically unchanged. Thus, under different amplitude vibration conditions of the diaphragm drive coil 22, nearly consistent BL curves can be obtained, thereby improving the linearity of the vibration of the diaphragm drive coil 22.

[0053] Optionally, see Figure 2 A first alternating current is input to the diaphragm drive coil 22, and the vibration component 2 drives the diaphragm 21 to vibrate along the extension direction of the gap 35 through the diaphragm drive coil 22;

[0054] The first magnetic component 41 or the second magnetic component 42 includes a magnetic circuit drive coil, and a second alternating current is input to the magnetic circuit drive coil. The second alternating current has the same frequency as the first alternating current, and the magnetic circuit assembly 3 has the same vibration direction as the vibration assembly 2.

[0055] Specifically, when the first magnetic element 41 includes a magnetic circuit drive coil, and a first alternating current is input into the diaphragm drive coil 22, the vibration component 2 can vibrate within the housing 1 because the diaphragm drive coil 22 is located in the magnetic field region of the magnetic circuit assembly 3. When a second alternating current is input into the magnetic circuit drive coil of the first magnetic element 41, the magnetic circuit assembly 3 can be driven to vibrate within the housing 1 by utilizing the electromagnetic interaction between the second magnetic element 42 and the first magnetic element 41.

[0056] Since the first alternating current and the second alternating current have the same frequency, the vibration frequency of the magnetic circuit assembly 3 can be synchronized with the vibration frequency of the diaphragm drive coil 22. Moreover, the magnitude of the second alternating current matches the vibration of the vibration assembly 2, so that the vibration amplitude of the magnetic circuit assembly 3 can be synchronized with the vibration amplitude of the diaphragm drive coil 22. This allows the magnetic circuit assembly 3 and the vibration assembly 2 to vibrate synchronously, keeping the relative position between the magnetic circuit assembly 3 and the vibration assembly 2 unchanged. This keeps the diaphragm drive coil 22 always in the strong magnetic region with a dense magnetic field generated by the magnetic circuit assembly 3, thereby reducing the distortion of the speaker and improving the sound quality of the speaker.

[0057] Specifically, when the magnitude of the second alternating current matches the vibration of the vibration component 2, the magnitude of the second alternating current can be determined based on parameters such as the number of turns of the magnetic circuit drive coil in the first magnetic component 41, the coil resistance, and the weight of the magnetic circuit component 3. For example, if the weight of the magnetic circuit component 3 is large, the magnitude of the second alternating current can be increased to achieve the matching of the magnitude of the second alternating current with the vibration of the vibration component 2.

[0058] Specifically, when the second magnetic element 42 includes a magnetic circuit drive coil, the magnetic circuit drive coil in the second magnetic element 42 is disposed opposite to the magnetic circuit drive coil in the first magnetic element 41 and can perform electromagnetic cooperation.

[0059] Specifically, when current is input to both the magnetic circuit drive coil in the second magnetic component 42 and the magnetic circuit drive coil in the first magnetic component 41, the mutual inductance between them can generate a repulsive or attractive force. (See also...) Figure 5 When a repulsive force is generated between the magnetic circuit drive coil in the second magnetic component 42 and the magnetic circuit drive coil in the first magnetic component 41, the drive assembly 4 can cause the magnetic circuit assembly 3 to move along the first direction Y. When an attractive force is generated between the second magnetic component 42 and the first magnetic component 41, the drive assembly 4 can cause the magnetic circuit assembly 3 to move in the opposite direction to the first direction Y, so that the magnetic circuit assembly 3 can vibrate in the same direction as the vibration assembly 2.

[0060] In addition, by adjusting parameters such as the magnitude and direction of the current in the magnetic circuit drive coil of the second magnetic component 42 and the magnetic circuit drive coil of the first magnetic component 41 respectively, the type (attraction or repulsion) and magnitude of the force between the magnetic circuit drive coil of the second magnetic component 42 and the magnetic circuit drive coil of the first magnetic component 41 can be adjusted to ensure the synchronization of the relative vibration of the magnetic circuit assembly 3 and the vibration assembly 2.

[0061] Optionally, the first magnetic element 41 includes a first magnet, in which a magnetic circuit drive coil is wound around the first magnet to form an electromagnet, and the second magnetic element 42 includes a second magnet, which is disposed opposite to the electromagnet and is capable of electromagnetic interaction.

[0062] Specifically, when the magnetic circuit drive coil in the first magnetic component 41 is energized, it can cause the electromagnet to form a permanent magnet. The magnetic interaction between the electromagnet and the second magnet can generate either a repulsive or attractive force between them. See also Figure 5When the opposing magnetic poles of the electromagnet and the second magnet are the same, a repulsive force is generated between the electromagnet and the second magnet, and the driving component 4 can cause the magnetic circuit component 3 to move along the first direction Y. When the opposing magnetic poles of the electromagnet and the second magnet are opposite, an attractive force is generated between the electromagnet and the second magnet, and the driving component 4 can cause the magnetic circuit component 3 to move in the opposite direction to the first direction Y, so that the magnetic circuit component 3 can vibrate in the same direction as the vibration component 2.

[0063] In addition, by adjusting parameters such as the magnitude and direction of the current in the magnetic circuit drive coil of the first magnetic component 41, the type and magnitude of the force between the electromagnet and the second magnet can be adjusted to ensure the synchronization of the relative vibration of the magnetic circuit assembly 3 and the vibration assembly 2.

[0064] Optionally, see Figures 1 to 5 The speaker also includes an elastic element 5, which is disposed between the magnetic circuit assembly 3 and the housing 1. One end of the elastic element 5 is fixed to the side of the magnetic circuit assembly opposite to the vibration assembly, and the other end of the elastic element is fixed to the housing to support the magnetic circuit assembly.

[0065] Specifically, the magnetic circuit assembly 3 may include a magnetic yoke 31, a central magnet 32, a side magnet 33, and a magnetic sheet 34. The central magnet 32 ​​is disposed on the magnetic yoke 31, and the side magnet 33 is disposed on the magnetic yoke 31 but not adjacent to the periphery of the central magnet 32. The magnetic sheet 34 may specifically include a central magnetic sheet 341 and a side magnetic sheet 342. The central magnetic sheet 341 is disposed on the side of the central magnet 32 ​​away from the magnetic yoke 31, and the side magnetic sheet 342 is disposed on the side of the side magnet 33 away from the magnetic yoke 31. The gaps in the magnetic circuit assembly 3 include a gap between the side magnet 33 and the central magnet 32 ​​and a gap between the central magnetic sheet 341 and the side magnetic sheet 342.

[0066] The elastic element 5 can be a spring or an elastic sleeve, and it is connected between the magnetic yoke 31 and the housing 1. When the speaker is not transmitting sound, the drive assembly 4 does not provide driving force to the magnetic circuit assembly 3. At this time, the elastic element 5 can support the magnetic circuit assembly 3 in a compressed state to balance the weight of the magnetic circuit assembly 3 itself.

[0067] When the loudspeaker transmits sound, and the magnetic circuit assembly 3 and the vibration assembly 2 vibrate in the same direction, the magnetic yoke 31 can pull the elastic member 5 to stretch or compress when it vibrates up and down, thereby improving the flexibility of the vibration of the magnetic circuit assembly 3.

[0068] Optionally, see Figure 5 and Figure 6 The magnetic circuit drive coil in the second magnetic component 42 and the magnetic circuit drive coil in the first magnetic component 41 are both ring-shaped. The magnetic circuit drive coil in the second magnetic component 42 is disposed in the circumferential region of the magnetic circuit assembly 3 near the housing 1. The elastic member 5 is located in the middle region enclosed by the magnetic circuit drive coil in the second magnetic component 42 and the magnetic circuit drive coil in the first magnetic component 41.

[0069] Specifically, the magnetic circuit drive coil in the second magnetic component 42 is disposed on the edge of the magnetic circuit assembly 3 near the housing 1. When the mutual inductance between the magnetic circuit drive coil in the second magnetic component 42 and the magnetic circuit drive coil in the first magnetic component 41 generates a repulsive or attractive force between them, the repulsive or attractive force is evenly applied to the magnetic circuit assembly 3 to ensure the stability of the vibration of the magnetic circuit assembly 3.

[0070] In another embodiment, the second magnetic element 42 may include a plurality of magnetic circuit drive coils in the second magnetic element 42, and the first magnetic element 41 may include a plurality of magnetic circuit drive coils in the first magnetic element 41. The magnetic circuit drive coils in the plurality of second magnetic elements 42 are spaced apart and arranged in a ring in the circumferential region of the magnetic circuit assembly 3 near the housing 1. The elastic element 5 is located in the space enclosed by the magnetic circuit drive coils in the plurality of second magnetic elements 42 and the magnetic circuit drive coils in the plurality of first magnetic elements 41.

[0071] Alternatively, without the elastic element 5, current can be continuously input into the magnetic circuit drive coil in the second magnetic element 42 and the magnetic circuit drive coil in the first magnetic element 41 to suspend the magnetic circuit assembly 3 when the speaker is not in operation.

[0072] Optionally, see Figures 9 to 11 The drive assembly 4 includes a telescopic member 43, which is connected to the magnetic circuit assembly 3;

[0073] During the process of the diaphragm driving coil 22 driving the diaphragm 21 to vibrate, the telescopic member 43 deforms to drive the magnetic circuit assembly 3 to vibrate with the vibration assembly 2.

[0074] Specifically, the telescopic member 43 can shrink and stretch in response to different electrical signals. For example, the telescopic member 43 can be a piezoelectric ceramic or a shape memory metal.

[0075] When the telescopic member 43 contracts or extends, it can provide a pulling or pushing force to the magnetic circuit assembly 3 to vibrate. When the telescopic member 43 contracts, it can pull the magnetic circuit assembly 3, allowing the magnetic circuit assembly 3 to move along the first direction Y. Figure 10 As shown, at this time, because the telescopic member 43 is compressed, the width of the telescopic member 43 increases to H1, as... Figure 13 As shown; the telescopic member 43, when extended, can push the magnetic circuit assembly 3, and the telescopic member 43 can cause the magnetic circuit assembly 3 to move in a direction opposite to the first direction Y, such as... Figure 11 As shown, at this time, because the telescopic member 43 is stretched, the width of the telescopic member 43 is reduced to H2, as... Figure 14 As shown; so that the magnetic circuit assembly 3 can vibrate in the same direction as the vibration assembly 2, and the diaphragm drive coil 22 is kept in the stable magnetic field region of the magnetic circuit assembly 3, thereby improving the linearity of the vibration of the diaphragm drive coil 22.

[0076] It is worth noting that the nonlinearity of the diaphragm drive coil 22 vibration mainly occurs in the case of low-frequency, large-amplitude vibration of the diaphragm drive coil 22. Therefore, under high-current vibration of 100-1000Hz, the drive assembly 4 can flexibly drive the selected magnetic circuit assembly 3 and the vibration assembly 2 to vibrate in the same direction.

[0077] Optionally, see Figure 9 The telescopic member 43 is an electro-deformable basin frame, the diaphragm 21 is sandwiched between the housing 1 and the first end of the electro-deformable basin frame, and the second end of the electro-deformable basin frame is connected to the magnetic circuit assembly 3.

[0078] The electro-deformation frame deforms to drive the magnetic circuit assembly 3 to vibrate synchronously with the vibration assembly 2.

[0079] Specifically, the edge of the diaphragm 21 can serve as its connection area. One side surface of the edge of the diaphragm 21 can be bonded to the housing 1, and the other side surface of the edge of the diaphragm 21 can be bonded to the top of the electro-deformation basin frame. The bottom end of the electro-deformation basin frame can be bonded to the magnetic circuit assembly 3, so that the vibration of the diaphragm 21 can be transmitted through the electro-deformation basin frame while driving the magnetic circuit assembly 3 and the vibration assembly 2 to vibrate in the same direction.

[0080] Optionally, see Figure 12 The gap 35 includes a first region 351 and a second region 352, wherein the magnetic field strength of the first region 351 is greater than that of the second region 352, and at least a portion of the diaphragm drive coil 22 is held in the first region 351.

[0081] Specifically, see Figure 12The first region 351 can be the region formed between the central magnetic sheet 341 and the side magnetic sheet 342, and the second region 352 can be the region formed between the central magnet 32 ​​and the side magnet 33. Since the central magnetic sheet 341 is located between the central magnet 32 ​​and the diaphragm 21, and the side magnetic sheet 342 is located between the side magnet 33 and the diaphragm 21, the central magnetic sheet 341 and the side magnetic sheet 342 can change the direction of the magnetic field of the central magnet 32 ​​and the side magnet 33 and concentrate them together through the first region 351, so that the magnetic field strength of the first region 351 is greater than the magnetic field strength of the second region 352, that is, a strong magnetic region is formed in the first region 351.

[0082] When the magnetic circuit assembly 3 and the vibration assembly 2 vibrate in the same direction, the diaphragm drive coil 22 can be kept in the strong magnetic region of the magnetic circuit assembly 3, thereby improving the linearity and amplitude of the vibration of the diaphragm drive coil 22.

[0083] Optionally, the loudspeaker further includes a distance detection component disposed between the diaphragm drive coil 22 and the magnetic circuit assembly 3, and used to detect the distance between the diaphragm drive coil 22 and the magnetic circuit assembly 3;

[0084] When the driving component 4 drives the magnetic circuit component 3 to vibrate in the same direction as the vibration component 2, the change in distance between the diaphragm driving coil 22 and the magnetic circuit component 3 is less than a set distance.

[0085] Specifically, the loudspeaker may include a control component that receives distance information detected by the distance detection component. This control component can adjust the driving force of the driving component 4 according to the distance information between the diaphragm drive coil 22 and the magnetic circuit component 3.

[0086] When the increase in distance between the diaphragm drive coil 22 and the magnetic circuit assembly 3 is greater than a set distance, the control component can control the drive component 4 to increase the driving force so that the vibration amplitude of the magnetic circuit assembly 3 is synchronized with the vibration amplitude of the vibration component 2; and when the decrease in distance between the diaphragm drive coil 22 and the magnetic circuit assembly 3 is greater than a set distance, the control component can control the drive component 4 to decrease the driving force, similarly ensuring that the vibration amplitude of the magnetic circuit assembly 3 is synchronized with the vibration amplitude of the vibration component 2.

[0087] Optionally, the distance detection component includes a first electrode plate and a second electrode plate. The first electrode plate is disposed on the magnetic circuit component 3 and located in the gap. The second electrode plate is disposed on the diaphragm drive coil 22 and is opposite to the first electrode plate.

[0088] When the driving component 4 drives the magnetic circuit component 3 to vibrate in the same direction as the vibration component 2, the capacitance change between the second electrode plate and the first electrode plate is less than a set threshold.

[0089] Specifically, the capacitance between the second electrode and the first electrode can correspond to the distance between the diaphragm drive coil 22 and the magnetic circuit assembly 3. That is, the change in capacitance between the second electrode and the first electrode can be used to determine the change in distance between the diaphragm drive coil 22 and the magnetic circuit assembly 3. For example, if the capacitance between the second electrode and the first electrode decreases, the driving force of the drive assembly 4 can be increased by increasing the value of the second alternating current. This capacitance change can be fed back to the control assembly to ensure that the vibration amplitude of the magnetic circuit assembly 3 is synchronized with the vibration amplitude of the vibration assembly 2 through the control of the drive assembly 4.

[0090] Alternatively, the distance detection component can also be a distance sensor, which can directly obtain the distance between the diaphragm drive coil 22 and the magnetic circuit assembly 3, so as to adjust the vibration amplitude of the magnetic circuit assembly 3.

[0091] Optionally, see Figure 5 The diaphragm 21 includes a vibrating plate 211 and a folded ring 212. One side of the folded ring 212 is connected to the vibrating plate 211, and the other side of the folded ring 212 is fixedly connected to the housing 1.

[0092] Specifically, the vibrating plate 211 can be connected to the hollow area of ​​the folded ring 212. The vibrating plate 211 can serve as the vibrating body of the diaphragm 21 to ensure the structural integrity of the diaphragm 21 during frequent vibration. The outer periphery of the folded ring 212 is fixed inside the housing 1. The folded ring 212 can provide elasticity to the vibration of the diaphragm 21 and increase the amplitude of the diaphragm 21 during vibration.

[0093] Optionally, the housing 1 includes a detachably connected front housing 11 and a rear housing 12, the vibration assembly is disposed near the front housing 11, the magnetic circuit assembly is disposed near the rear housing 12, and the outer side of the folded ring 212 is attached and fixed to the surface of the front housing 11 facing the rear housing 12.

[0094] Specifically, see Figure 4 The outer periphery of the folding ring 212 is fixed to the surface of the front shell 11 facing the rear shell 12 by the adhesive 6. In one embodiment, one side of the outer periphery of the folding ring 212 is glued to the surface of the front shell 11 facing the rear shell 12 by adhesive or tape to simplify the assembly process of the diaphragm 21 and the shell 1.

[0095] In another embodiment, the outer peripheral side of the folding ring 212 can be integrally connected to the surface of the front shell 11 facing the rear shell 12. For example, the outer peripheral side of the folding ring 212 can be fixed to the surface of the front shell 11 facing the rear shell 12 by heat fusion to ensure the connection strength between the diaphragm 21 and the shell 1.

[0096] Alternatively, the housing 1 can be a speaker basket, or when the speaker is used in an electronic device, the housing 1 can be used as at least part of the electronic device housing.

[0097] This application also provides an electronic device, which includes the aforementioned speaker.

[0098] Specifically, when the electronic device is equipped with the speaker, when the vibration component 2 vibrates, the driving component 4 can drive the magnetic circuit component 3 to vibrate with the vibration component 2, thereby improving the linearity of the vibration of the diaphragm driving coil 22 and ensuring the acoustic effect of the electronic device.

[0099] Additionally, the housing 1 can serve as the front housing 11 and rear housing 12 of the electronic device, with the outer periphery of the diaphragm 21 fixed to the front housing 11 via adhesive 6; the front housing 11 can be a single unit, such as... Figure 7 As shown, this ensures the overall strength of the front shell 11; the front shell 11 can also be divided into a front shell body and a front shell bracket detachably connected to the periphery of the front shell body, such as... Figure 8 As shown, this is to facilitate the assembly of internal components of the electronic device.

[0100] The elastic element 5 can abut between the magnetic yoke 31 and the rear shell 12 to balance the weight of the magnetic circuit assembly 3.

[0101] The first direction Y is the direction from the rear shell 12 to the front shell 11. When the vibration assembly 2 moves towards the first direction Y to approach the front shell 11, the drive assembly 4 drives the magnetic circuit assembly 3 to move towards the front shell 11 in the first direction Y. When the vibration assembly 2 moves in the opposite direction to the first direction Y, the vibration assembly 2 approaches the rear shell 12, and the drive assembly 4 drives the magnetic circuit assembly 3 to move in the opposite direction to the first direction Y, and the magnetic circuit assembly 3 approaches the rear shell 12. The vibration assembly 2 reciprocates within the shell 1 to produce sound, and the drive assembly 4 drives the magnetic circuit assembly 3 to reciprocate synchronously with the vibration assembly within the shell 1, reducing the distortion of the speaker.

[0102] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0103] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A loudspeaker, characterized by The application relates to a loudspeaker, which comprises: a shell (1) with a containing cavity, a vibration assembly (2), a magnetic circuit assembly (3) and a driving assembly (4) contained in the containing cavity; the vibration assembly (2) comprises a diaphragm (21) and a diaphragm driving coil (22) connected to the diaphragm (21); the magnetic circuit assembly (3) has a gap (35) opposite to the diaphragm driving coil (22), the magnetic circuit assembly (3) drives the vibration assembly (2) to vibrate in the containing cavity, the driving assembly (4) drives the magnetic circuit assembly (3) to vibrate in the same direction with the vibration assembly (2), and the magnetic circuit assembly (3) vibrates synchronously with the vibration assembly (2), so that the relative position between the magnetic circuit assembly (3) and the vibration assembly (2) remains unchanged.

2. The loudspeaker of claim 1, wherein, the driving assembly (4) comprises a first magnetic member (41) arranged on the shell (1) and a second magnetic member (42) arranged on the magnetic circuit assembly (3); the second magnetic member cooperates with the first magnetic member (41) to drive the magnetic circuit assembly (3) to vibrate with the vibration assembly (2).

3. The loudspeaker of claim 2, wherein, a first alternating current is input to the diaphragm driving coil (22), and the vibration assembly (2) drives the diaphragm to vibrate along the extension direction of the gap through the diaphragm driving coil; the first magnetic member (41) or the second magnetic member comprises a magnetic circuit driving coil, a second alternating current is input to the magnetic circuit driving coil, the frequency of the second alternating current is the same as that of the first alternating current, and the vibration direction of the magnetic circuit assembly (3) is the same as that of the vibration assembly (2).

4. The loudspeaker of claim 1, wherein, the driving assembly (4) comprises an elastic member (43) connected to the magnetic circuit assembly (3); during the vibration of the diaphragm driven by the diaphragm driving coil, the elastic member deforms to drive the magnetic circuit assembly (3) to vibrate with the vibration assembly (2).

5. The loudspeaker of claim 4, wherein, the elastic member (43) is an electro-deformation yoke, the diaphragm (21) is clamped between the shell (1) and a first end of the electro-deformation yoke, and a second end of the electro-deformation yoke is connected to the magnetic circuit assembly (3); the electro-deformation yoke deforms to drive the magnetic circuit assembly (3) to vibrate synchronously with the vibration assembly (2).

6. The loudspeaker of any one of claims 1-5, wherein, an elastic member (5) is arranged between the magnetic circuit assembly (3) and the shell (1), one end of the elastic member is fixed to a side of the magnetic circuit assembly away from the vibration assembly, and the other end of the elastic member is fixed to the shell to support the magnetic circuit assembly.

7. The loudspeaker of any one of claims 1-5, wherein, the shell comprises a front shell (11) and a rear shell (12) detachably connected, the driving assembly is arranged between the front shell (11) and the magnetic circuit assembly, and / or the driving assembly is arranged between the rear shell (12) and the magnetic circuit assembly.

8. The loudspeaker of claim 1, wherein, The diaphragm (21) comprises a vibrating plate (211) and a folded ring (212), one side of the folded ring (212) is connected with the vibrating plate (211), and the other side of the folded ring (212) is fixedly connected with the shell (1).

9. The loudspeaker of claim 8, wherein, The shell (1) comprises a front shell (11) and a rear shell (12) which are detachably connected, the vibration assembly is arranged close to the front shell (11), the magnetic circuit assembly is arranged close to the rear shell (12), and the outer side of the folded ring (212) is fixedly attached to the surface of the front shell facing the rear shell.

10. An electronic device, comprising: The loudspeaker comprises any one of claims 1 to 9.

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