Exciter, sound box and vehicle

By fixedly connecting the voice coil to the housing in the exciter and using the magnetic gap of the magnetic component to increase the vibration quality, the problem of light voice coil quality resulting in poor low frequency effect is solved, and better low frequency effect and frequency response are achieved.

CN223093875UActive Publication Date: 2025-07-11BYD CO LTD
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Patent Information

Application Number
CN202422038945.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-21
Publication Date
2025-07-11
Estimated Expiration
2034-08-21

AI Technical Summary

Technical Problem

The voice coil of existing exciters is lighter in quality, resulting in poor low frequency performance during operation.

Method used

By fixedly connecting the voice coil to the housing and connecting the inner side of the elastic wave to the magnetic component, there is a magnetic gap in the magnetic component, and the second end of the voice coil is located in the magnetic gap, which increases the vibration mass by using the larger mass of the magnetic component to enhance the low-frequency effect.

Benefits of technology

It effectively increases the vibration quality of the exciter and improves the low-frequency effect and frequency response.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an exciter, a sound box and a vehicle. The exciter includes: a housing; the voice coil is located in the shell, and the first end of the voice coil is connected to the shell; the damper is located in the shell, and the outer side of the damper is connected to the shell; the magnetic assembly is located in the shell, the inner side of the damper is connected to the magnetic assembly, a magnetic gap is formed in the magnetic assembly, and the second end of the voice coil is located in the magnetic gap. The exciter provided by the embodiment of the utility model has a better low-frequency effect.
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Description

Technical Field

[0001] The utility model relates to the technical field of exciters, and specifically, to an exciter, a speaker and a vehicle. Background Art

[0002] An exciter is a harmonic generator, which is a sound processing device that modifies and beautifies sound signals by using the psychoacoustic characteristics of humans. By adding components to the sound in various ways, the sound quality and timbre can be improved, and the sense of space of the sound can be increased.

[0003] In related technologies, the flexure of the exciter is usually installed on the voice coil of the exciter. When the exciter works, the voice coil vibrates, and then drives the exciter and its installation plane to vibrate and generate sound. The voice coil is relatively light in mass and cannot effectively increase the vibration mass of the exciter, so the low-frequency effect of the exciter during operation is not good. Summary of the Utility Model

[0004] A series of simplified concepts are introduced in the summary of the utility model, which will be further elaborated in the detailed implementation section. The summary of the utility model does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] The present utility model is proposed to solve the above problems. According to the first aspect of the present utility model, there is provided an exciter, which includes:

[0006] A housing;

[0007] A voice coil located inside the housing, and a first end of the voice coil is connected to the housing;

[0008] A flexure located inside the housing, and an outer side of the flexure is connected to the housing;

[0009] A magnetic component located inside the housing, an inner side of the flexure is connected to the magnetic component, and there is a magnetic gap in the magnetic component, and a second end of the voice coil is located in the magnetic gap.

[0010] Exemplarily, the magnetic component includes a first magnetic member, a second magnetic member and a magnetic conductor;

[0011] The second magnetic member and the magnetic conductor are arranged inside the first magnetic member, and there is the magnetic gap between the first magnetic member and the second magnetic member and the magnetic conductor.

[0012] Exemplarily, the first magnetic member has a cylindrical outer wall and a support portion connected to the cylindrical outer wall, and the support portion is located inside the cylindrical outer wall;

[0013] The second magnetic member and the magnetic conductive member are located inside the cylindrical outer wall. The first side of the second magnetic member is connected to the second magnetic member, and the second side of the second magnetic member is connected to the magnetic conductive member.

[0014] Exemplarily, the first magnetic member is a U-shaped iron, the second magnetic member is a magnet, and the magnetic conductive member is a magnetic conductive plate.

[0015] Exemplarily, the flexure includes a first flexure and a second flexure;

[0016] The outer side of the first flexure is connected to the housing, and the inner side of the first flexure is connected to the first end face of the first magnetic member;

[0017] The outer side of the second flexure is connected to the housing, and the inner side of the second flexure is connected to the second end face of the first magnetic member.

[0018] Exemplarily, the first flexure and the second flexure are symmetrically arranged on both sides of the first magnetic member.

[0019] Exemplarily, the first end face of the first magnetic member has a first annular boss, and the first annular boss passes through a first through hole inside the first flexure;

[0020] The second end face of the first magnetic member has a second annular boss, and the second annular boss passes through a second through hole inside the second flexure.

[0021] Exemplarily, the housing includes an upper shell, a middle shell, and a lower shell. The upper shell is connected to the first side of the middle shell, and the lower shell is connected to the second side of the middle shell;

[0022] The first end of the voice coil is connected to the upper shell;

[0023] The outer side of the first flexure is connected to the first side of the middle shell, and the outer side of the second flexure is connected to the second side of the middle shell.

[0024] Exemplarily, the outer side of the first flexure is clamped and fixed between the upper shell and the middle shell;

[0025] The outer side of the second flexure is clamped and fixed between the middle shell and the lower shell.

[0026] Exemplarily, the voice coil includes a voice coil bobbin and a coil:

[0027] The voice coil bobbin is connected to the housing;

[0028] The coil is wound around the voice coil bobbin, and the coil is located in the magnetic gap.

[0029] According to a second aspect of the present utility model, there is provided a speaker, which includes the exciter as described above.

[0030] According to a third aspect of the present utility model, there is provided a vehicle, which includes the exciter as described above or the speaker as described above.

[0031] For the exciter, speaker and vehicle according to the present utility model, the voice coil and the housing are fixedly connected. At the same time, the inner side of the spider is connected to the magnetic component. There is a magnetic gap in the magnetic component. The voice coil is inserted into the magnetic gap of the magnetic component. When the exciter works, the coil in the voice coil generates a force on the magnetic component after passing through an alternating signal, driving the magnetic component to vibrate, and then driving the exciter and its mounting plane to vibrate and generate sound. The mass of the magnetic component is much larger than that of the voice coil. By connecting the spider to the magnetic component with a larger mass, the vibration mass can be effectively increased, the low-frequency effect of the exciter can be improved, and the frequency response can be better. Description of the Drawings

[0032] By describing the embodiments of the present utility model in more detail in conjunction with the drawings, the above and other objects, features and advantages of the present utility model will become more obvious. The drawings are used to provide a further understanding of the embodiments of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings, the same reference numerals generally represent the same components or steps.

[0033] Figure 1 It is a cross-sectional schematic view of an exciter according to an embodiment of the present utility model;

[0034] Figure 2 It is an exploded schematic view of an exciter according to an embodiment of the present utility model;

[0035] Figure 3 It is a cross-sectional schematic view of a yoke according to an embodiment of the present utility model;

[0036] Figure 4 It is a structural schematic view of a voice coil according to an embodiment of the present utility model.

[0037] Description of the Reference Numerals in the Drawings:

[0038] 100 - housing, 110 - upper housing, 120 - middle housing, 130 - lower housing, 200 - voice coil, 210 - voice coil bobbin, 220 - coil, 300 - spider, 320 - second spider, 400 - magnetic component, 410 - first magnetic member, 411 - first end face of the first magnetic member, 412 - second end face of the first magnetic member, 413 - first annular boss, 414 - second annular boss, 415 - cylindrical outer wall, 416 - support portion, 420 - second magnetic member, 430 - magnetic conductor. Detailed implementation manners

[0039] In the following description, numerous specific details are given to provide a more thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application may be practiced without one or more of these details. In other instances, some technical features well known to those of ordinary skill in the art are not described to avoid confusion with the present application.

[0040] It should be understood that the present application can be implemented in different forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present application to those of ordinary skill in the art. In the drawings, the dimensions and relative dimensions of layers and regions may be exaggerated for clarity. Like reference numerals throughout the figures indicate like elements.

[0041] It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, or section from another element, component, region, layer, or section. Thus, a first element, component, region, layer, or section discussed below may be denoted as a second element, component, region, layer, or section without departing from the teachings of the present application.

[0042] Spatial relationship terms such as "under", "beneath", "below", "underneath", "above", "upper", etc. are used herein for convenience in describing the relationship of one element or feature shown in the figures to other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relationship terms are intended to also include different orientations of the device in use and operation.

[0043] The purpose of the terms used herein is only to describe specific embodiments and is not a limitation of the present application. When used herein, the singular forms "a", "an", and "the" are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "comprising" and / or "including", when used in this specification, specify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term "and / or" includes any and all combinations of the related listed items.

[0044] Embodiments of the utility model are described herein with reference to cross-sectional views that are schematic diagrams of ideal embodiments (and intermediate structures) of the present application. As such, variations in the shapes shown can be expected due to, for example, manufacturing techniques and / or tolerances. Accordingly, embodiments of the present application should not be limited to the specific shapes shown herein, but rather include shape deviations due to, for example, manufacturing. Thus, the figures shown are substantially schematic, and their shapes are not intended to show the actual shape of the device and are not intended to limit the scope of the present application.

[0045] Reference is made to Figures 1-4 for an exemplary illustration of an actuator according to an embodiment of the present utility model. Figure 1 is a schematic cross-sectional view of an actuator according to an embodiment of the present utility model; Figure 2 is an exploded schematic view of an actuator according to an embodiment of the present utility model. The actuator includes: a housing 100, a voice coil 200, a suspension 300, and a magnetic assembly 400. The voice coil 200 is located within the housing 100, and a first end of the voice coil 200 is connected to the housing 100; the suspension 300 is located within the housing 100, and an outer side of the suspension 300 is connected to the housing 100; the magnetic assembly 400 is located within the housing 100, an inner side of the suspension 300 is connected to the magnetic assembly 400, a magnetic gap is provided in the magnetic assembly 400, and a second end of the voice coil 200 is located within the magnetic gap.

[0046] For the actuator according to an embodiment of the present utility model, the voice coil 200 is fixedly connected to the housing 100. At the same time, an inner side of the suspension 300 is connected to the magnetic assembly 400, and an outer side of the suspension 400 is connected to the housing 100. The housing 100 of the actuator can be mounted on a preset mounting plane. When the actuator operates, a coil 220 in the voice coil 200 generates a force on the magnetic assembly 400 after passing through an alternating signal, driving the magnetic assembly 400 to vibrate, and then driving the actuator and the mounting plane to vibrate outward. Since the suspension 300 is connected to the magnetic assembly 400 with a relatively large mass, rather than to the voice coil 200 with a relatively small mass, the vibration mass of the actuator can be effectively increased, the low-frequency effect of the actuator can be improved, the effective frequency bandwidth of the actuator can be extended, and the frequency response can be made better.

[0047] In this embodiment, the magnetic assembly 400 includes a first magnetic member 410, a second magnetic member 420, and a magnetic conductive member 430. The second magnetic member 420 and the magnetic conductive member 430 are disposed inside the first magnetic member 410, and there is a magnetic gap between the first magnetic member 410 and the second magnetic member 420 and the magnetic conductive member 430. The first magnetic member 410 and the magnetic conductive member 430 can be made of soft magnetic materials such as low-carbon steel and iron-nickel alloy, and the second magnetic member 420 can be a permanent magnet such as ferrite or neodymium iron boron. The first magnetic member 410, the second magnetic member 420, and the magnetic conductive member 430 form a magnetic circuit driving structure to provide a driving magnetic field. The second end of the voice coil 200 is located in the magnetic gap of the magnetic assembly 400. After the coil 220 in the voice coil 200 is energized, a magnetic force is generated, which acts on the magnetic assembly 400. The magnetic assembly 400 moves back and forth under the action of the force, thereby driving the actuator and the mounting plane to vibrate and emit sound outward.

[0048] Exemplarily, an annular magnetic gap is formed by the first magnetic member 410, the second magnetic member 420, and the magnetic conductive member 430, and the center of the voice coil 200 corresponds to and is collinear with the center of the annular magnetic gap.

[0049] As Figure 3 shown, in this embodiment, the first magnetic member 410 includes a cylindrical outer wall 415 and a support portion 416 located inside the cylindrical outer wall 415. The circumferential edge of the support portion 416 is connected to the cylindrical outer wall 415. The second magnetic member 420 and the magnetic conductive member 430 are both located inside the cylindrical outer wall 415. The first side of the second magnetic member 420 is connected to the support portion 416, and the second side of the second magnetic member 420 is connected to the magnetic conductive member 430. There is a magnetic gap between the cylindrical outer wall 415 and the second magnetic member 420 and the magnetic conductive member 430. Exemplarily, the first side and the second side of the second magnetic member 420 can be connected to the support portion 416 and the magnetic conductive member 430 respectively by an adhesive method.

[0050] Exemplarily, the first magnetic member 410 is a U-shaped iron, the second magnetic member 420 is a magnet, and the magnetic conductive member 430 is a magnetic conductive plate. The magnetic conductive plate is also called a washer, and its material is usually low-carbon steel with a low carbon content to reduce magnetic resistance. The magnetic conductive plate usually forms a magnetic circuit with the U-shaped iron and the magnet. Its thickness and the width of the voice coil 200 determine the magnitude of the bass distortion of the actuator.

[0051] In this embodiment, the diaphragm 300 includes a first diaphragm 310 and a second diaphragm 320. The outer side of the first diaphragm 310 is connected to the housing 100, and the inner side of the first diaphragm 310 is connected to the first end face 411 of the first magnetic member 410. Exemplarily, the outer side and the inner side of the first diaphragm 310 can be connected to the housing 100 and the first end face 411 respectively by means such as bonding. The outer side of the second diaphragm 320 is connected to the housing 100, and the inner side of the second diaphragm 320 is connected to the second end face 412 of the first magnetic member 410. Exemplarily, the outer side and the inner side of the second diaphragm 330 can be connected to the housing 100 and the second end face 412 respectively by means such as bonding. The second end face 412 and the second end face can be two opposite end faces of the first magnetic member. The diaphragm is also called a baffle or a damper, and it has a braking effect and a center holding effect.

[0052] In the related art, there is also a technical solution of setting two diaphragms in the actuator, but both of its two diaphragms are connected to the same side of the voice coil. When the actuator works, the compliance linear range of its vibration system is small, the symmetry is poor, and nonlinear distortion is likely to occur. In this embodiment, by connecting the inner sides of the first diaphragm 310 and the second diaphragm 320 of the actuator to both sides of the first magnetic member 410 respectively, the compliance and its symmetry during the operation of the actuator can be effectively balanced, thereby effectively reducing the nonlinear distortion of the actuator.

[0053] Exemplarily, the first diaphragm 310 and the second diaphragm 320 are symmetrically arranged on both sides of the first magnetic member 410. That is, the shapes, structures and dimensions of the first diaphragm 310 and the second diaphragm 320 are the same. Thus, through their symmetrical arrangement, the nonlinear distortion of the actuator can be more effectively reduced.

[0054] In this embodiment, as Figure 3 shown, the first end face 411 of the first magnetic member 410 has a first annular boss 413, and the first annular boss 413 passes through the first through hole on the inner side of the first diaphragm 310. The second end face 412 of the first magnetic member 410 has a second annular boss 414, and the second annular boss 414 passes through the second through hole on the inner side of the second diaphragm 320.

[0055] The center of the first annular boss 413 is collinear with the center of the first end face 411 of the first magnetic member 410, and the outer diameter of the first end face 411 of the first magnetic member 410 is greater than the outer diameter of the first annular boss 413. The center of the second annular boss 414 is collinear with the center of the second end face 412 of the first magnetic member 410, and the outer diameter of the second end face 412 of the first magnetic member 410 is greater than the outer diameter of the second annular boss 414. The first annular boss 413 is inserted into the first through hole inside the first elastic wave 310, and the second annular boss 414 is inserted into the second through hole inside the second elastic wave 320. The diameter of the first through hole inside the first elastic wave 310 is slightly larger than the outer diameter of the first annular boss 413, and the diameter of the second through hole inside the second elastic wave 320 is slightly larger than the outer diameter of the second annular boss 414. Thus, before connecting the inner sides of the first elastic wave 310 and the second elastic wave 320 to the first end face 411 and the second end face 412 respectively, the first elastic wave 310 and the second elastic wave 320 can be sleeved on the first annular boss 413 and the second annular boss 414 respectively, that is, the first annular boss 413 and the second annular boss 414 are respectively inserted into the first through hole and the second through hole, so as to realize the positioning of the first elastic wave 310 and the second elastic wave 320 on the first end face 411 and the second end face 412. The arrangement of the first annular boss 413 and the second annular boss 414 can reduce the positioning difficulty between the elastic wave 300 and the first magnetic member 410, and facilitate the assembly and connection of the actuator.

[0056] In this embodiment, the housing 100 includes an upper housing 110, a middle housing 120 and a lower housing 130. The upper housing 110 is connected to the first side of the middle housing 120, and the lower housing 130 is connected to the second side of the middle housing 120. The first side and the second side of the middle housing 120 are its opposite sides. Exemplarily, the upper housing 110 and the lower housing 130 can be respectively connected to the two sides of the middle housing 120 by means such as bonding and snap connection. The first end of the voice coil 200 is connected to the upper housing 110. Exemplarily, it can be connected to the upper housing 110 by bonding. The outer side of the first elastic wave 310 is connected to the first side of the middle housing 120, that is, the side of the middle housing 120 facing the upper housing 110, and the outer side of the second elastic wave 320 is connected to the second side of the middle housing 120, that is, the side of the middle housing 120 facing the lower housing 130. Exemplarily, the outer sides of the first elastic wave 310 and the second elastic wave 320 can be respectively connected to the first side and the second side of the middle housing 120 by bonding. By connecting the outer sides of the two elastic waves to the two sides of the middle housing respectively, the symmetry can be effectively ensured.

[0057] In this embodiment, the outer side of the first elastic wave 310 is clamped and fixed between the upper housing 110 and the middle housing 120, and the outer side of the second elastic wave 320 is clamped and fixed between the middle housing 120 and the lower housing 130. By the clamping and fixing method, the outer sides of the first elastic wave 310 and the second elastic wave 320 can be more firmly fixed on the housing 100.

[0058] As Figure 4 shown, in this embodiment, the voice coil 200 includes a voice coil bobbin 210 and a coil 220. The voice coil bobbin 210 is connected to the housing 100, the coil 220 is wound around the voice coil bobbin 210, and the coil 220 is located in the magnetic gap. Specifically, the first end of the voice coil bobbin is connected to the upper housing, and the coil 220 is wound around the outside of the second end of the voice coil bobbin.

[0059] The voice coil 200 is a coil 220 through which the actuator passes an electric current. The voice coil bobbin 210 is a bobbin that supports the coil 220, and its material can be aluminum, magnesium alloy, copper, etc. The coil 220 is usually composed of self-fusing enameled wires such as enameled oxygen-free copper wires, copper-clad aluminum wires, pure aluminum wires, etc.

[0060] The following is an exemplary description of the assembly process of the actuator in this embodiment. First, the second end of the second magnetic member 420 is bonded to the magnetic conductive member 430 through a jig. Then, the assembly formed by bonding the second magnetic member 420 and the magnetic conductive member 430 is installed on the support portion 416 of the first magnetic member 410 through a jig. After that, the inner side of the first suspension 310 is bonded to the first end face 411 of the first magnetic member 410, and the outer side of the first suspension 310 is bonded to the first end of the middle housing 120. Then, the voice coil bobbin 210 of the voice coil 200 is bonded to the upper housing 110, and the upper housing 110 is bonded to the first end of the middle housing 120 and is bonded to the outer side of the first suspension 310, so that the coil 220 of the voice coil 200 is inserted into the magnetic gap of the magnetic assembly 400 composed of the first magnetic member 410, the second magnetic member 420 and the magnetic conductive member 430. After that, the inner and outer sides of the second suspension 320 are respectively bonded to the second end face 412 of the first magnetic member 410 and the second end of the middle housing 120. Finally, the lower housing 130 is bonded to the second end of the middle housing 120.

[0061] When the actuator in this embodiment is in use, when an alternating audio current is applied to the coil 220, an alternating thrust will be generated. Since the voice coil bobbin 210 is fixed to the housing 100 of the actuator, the voice coil 200 is fixed. The alternating thrust will act on the magnetic assembly 400, causing the magnetic assembly 400 to vibrate. Since the magnetic assembly 400 is connected to the housing 100 through the suspension 300, it can drive the housing 100 and the mounting plane to vibrate repeatedly to emit sound outward.

[0062] The actuator can be directly connected in contact with external devices such as a display screen or a vibrating plate, or can be indirectly fixed to the external device by other means such as adhesives. When the actuator works, it will push the external device to vibrate, and after the external device generates vibration, it will in turn push the actuator, and the two form a back-and-forth movement, generating sound and low-frequency effects. Of course, the number of actuators can be one, two or even multiple, and the number of actuators can be selected according to the actual needs of the device to achieve the optimal sound output effect.

[0063] The actuator in the present utility model can be applied to various installation sites, especially for products with limited space, such as automotive subwoofers, in-wall speakers, etc.

[0064] Thus, the introduction of the structure of the actuator of the present utility model is completed. For a complete actuator, there may also be other component structures, which will not be elaborated one by one here.

[0065] This application also provides a speaker, which includes the actuator as described above.

[0066] This application also provides a vehicle, which includes the actuator as described above or includes the speaker as described above. For the structures of other parts of the vehicle, please refer to the prior art and will not be elaborated herein.

[0067] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application thereto. Those of ordinary skill in the art can make various changes and modifications therein without departing from the scope and spirit of the present application. All such changes and modifications are intended to be included within the scope of the present application as claimed in the appended claims.

[0068] In the specification provided herein, a large number of specific details are set forth. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0069] Similarly, it should be understood that, in order to streamline the present application and assist in understanding one or more of the various utility model aspects, in the description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the methods of the present application should not be construed as reflecting an intention that the claimed present application requires more features than are expressly recited in each claim. Rather, as reflected by the corresponding claims, the inventive point lies in that the corresponding technical problems can be solved by features that are less than all the features of a single disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into the detailed description, where each claim itself serves as a separate embodiment of the present application.

[0070] Those skilled in the art will appreciate that, except where features are mutually exclusive, any combination may be used to combine all the features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all the processes or units of any method or apparatus so disclosed. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0071] Furthermore, those skilled in the art will be able to understand that, although some of the embodiments described herein include certain features included in other embodiments but not others, the combination of features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0072] It should be noted that the above embodiments illustrate the present application rather than limit the present application, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims.

Claims

1. An actuator, characterized in that, Comprising: A housing; A voice coil located inside the housing, with the first end of the voice coil connected to the housing; A suspension located inside the housing, with the outer side of the suspension connected to the housing; A magnetic assembly located inside the housing, with the inner side of the suspension connected to the magnetic assembly, the magnetic assembly having a magnetic gap, and the second end of the voice coil located in the magnetic gap.

2. The actuator according to claim 1, wherein The magnetic assembly includes a first magnetic member, a second magnetic member, and a magnetic conductive member; The second magnetic member and the magnetic conductive member are disposed inside the first magnetic member, and there is the magnetic gap between the first magnetic member and the second magnetic member and the magnetic conductive member.

3. The actuator according to claim 2, wherein The first magnetic member has a cylindrical outer wall and a support portion connected to the cylindrical outer wall, the support portion being located inside the cylindrical outer wall; The second magnetic member and the magnetic conductive member are located inside the cylindrical outer wall, the first side of the second magnetic member is connected to the second magnetic member, and the second side of the second magnetic member is connected to the magnetic conductive member.

4. The actuator according to claim 3, wherein The first magnetic member is a U-shaped iron, the second magnetic member is a magnet, and the magnetic conductive member is a magnetic conductive plate.

5. The actuator according to any one of claims 2-4, wherein The suspension includes a first suspension and a second suspension; The outer side of the first suspension is connected to the housing, and the inner side of the first suspension is connected to the first end face of the first magnetic member; The outer side of the second suspension is connected to the housing, and the inner side of the second suspension is connected to the second end face of the first magnetic member.

6. The actuator according to claim 5, wherein The first suspension and the second suspension are symmetrically disposed on both sides of the first magnetic member.

7. The actuator according to claim 5, wherein The first end face of the first magnetic member has a first annular boss that passes through a first through hole inside the first suspension; The second end face of the first magnetic member has a second annular boss that passes through a second through hole inside the second suspension.

8. The actuator according to claim 5, wherein The housing includes an upper housing, a middle housing, and a lower housing, the upper housing is connected to the first side of the middle housing, and the lower housing is connected to the second side of the middle housing; The first end of the voice coil is connected to the upper housing; The outer side of the first suspension is connected to the first side of the middle housing, and the outer side of the second suspension is connected to the second side of the middle housing.

9. The actuator according to claim 8, wherein The outer side of the first suspension is clamped and fixed between the upper housing and the middle housing; The outer side of the second suspension is clamped and fixed between the middle housing and the lower housing.

10. The actuator according to claim 1, wherein The voice coil includes a voice coil bobbin and a coil: The voice coil bobbin is connected to the housing; The coil is wound around the voice coil bobbin, and the coil is located in the magnetic gap.

11. A speaker, characterized in that, Including the actuator according to any one of claims 1-10.

12. A vehicle, characterized in that, Comprising an actuator as described in any one of claims 1-10 or a speaker as described in claim 11.