Speaker unit and camera equipment

Abstract

This utility model relates to the field of camera equipment technology, and provides a loudspeaker device and camera equipment. The loudspeaker device includes a loudspeaker body, a magnetic filter, a strong magnet assembly, and a drive assembly. The loudspeaker body is mounted to the equipment frame, and the magnetic filter is disposed around the loudspeaker body. The drive component in the drive assembly is mounted to the equipment frame, and the drive roller is drivenly connected to the output shaft of the drive component. The drive roller is rotatably mounted to the equipment frame and drivenly connected to the output shaft. The drive roller supports the magnetic filter and drives the magnetic filter to rotate. The driven roller is rotatably mounted to the equipment frame and cooperates with the drive roller to support the magnetic filter. The strong magnet assembly is used to remove magnetic impurities from the rotating magnetic filter. This utility model maintains good acoustic performance of the loudspeaker by distributing a magnetic filter around the loudspeaker body and automatically removing metal dust adsorbed on the magnetic filter using a strong magnet assembly.

Description

Technical Field

[0001] This utility model relates to the field of camera equipment technology, and in particular to a speaker device and camera equipment. Background Technology

[0002] With the increasing application of video equipment in industrial inspection, security monitoring, and smart manufacturing, its audio function has become a key interactive module. Especially in high-dust environments such as metal processing workshops and casting production lines, video equipment needs to provide real-time feedback on equipment status, issue safety warnings, or conduct voice communication through speakers.

[0003] However, with prolonged use, the speaker will attract metal dust particles from the air, which can easily affect the movement of the diaphragm, leading to a decrease in the sound quality of the speaker or even damage to the speaker. Utility Model Content

[0004] This utility model provides a loudspeaker device and a camera device to solve the above-mentioned technical defects in the prior art. By covering the outside of the loudspeaker body with a magnetic filter screen and automatically removing the metal dust adsorbed on the magnetic filter screen by a strong magnet assembly, the good acoustic performance of the loudspeaker can be maintained.

[0005] The first aspect of this utility model provides a loudspeaker device, comprising:

[0006] Speaker body for mounting to the equipment frame;

[0007] A magnetic filter screen is installed around the speaker body;

[0008] Driver components, including:

[0009] A drive unit for mounting to the device frame, the drive unit having an output shaft;

[0010] An active roller is rotatably mounted to the device frame and drivenly connected to the output shaft. The active roller is used to support the magnetic filter screen and to drive the magnetic filter screen to rotate.

[0011] The driven roller is rotatably mounted to the equipment frame and cooperates with the driving roller to support the magnetic filter screen;

[0012] A strong magnet assembly is used to mount to the equipment frame and is used to remove magnetic impurities from the rotating magnetic filter screen.

[0013] According to the speaker device provided by this utility model, the magnetic filter screen is provided with a continuous meshing part along the circumferential direction;

[0014] The outer circumferential surface of the drive roller is provided with a first meshing structure, and the first meshing structure meshes with the meshing part.

[0015] The outer circumferential surface of the driven roller is provided with a second meshing structure, which meshes with the meshing part.

[0016] According to the speaker device provided by this utility model, the magnetic filter has a first end and a second end that are disposed opposite to each other along the length direction, and the area of ​​the magnetic filter between the first end and the second end is defined as the filter area.

[0017] The magnetic filter screen is provided with the meshing part near the first end and the second end, and the meshing part at each end meshes with the first meshing structure and the second meshing structure.

[0018] According to the speaker device provided by this utility model, the engaging part includes a toothed ring arranged along the circumferential direction of the magnetic filter screen;

[0019] Both the first meshing structure and the second meshing structure include a gear protrusion, which meshes with the gear ring.

[0020] According to the speaker device provided by this utility model, the magnetic filter screen is divided into a functional area and a closed area. The functional area is provided with multiple filter holes, and the surface of the closed area is closed.

[0021] When the magnetic filter remains stationary, the functional area corresponds to the diaphragm projection area of ​​the speaker body.

[0022] According to the speaker device provided by this utility model, the strong magnet assembly includes:

[0023] A strong magnet body, suitable for mounting to a device frame, wherein the magnetic force of the strong magnet body is greater than the magnetic force of the magnetic filter screen, for stripping magnetic impurities from the magnetic filter screen;

[0024] A demagnetizing component is provided at the location of the strong magnet body. The demagnetizing component is used to demagnetize the strong magnet body so that magnetic impurities stripped from the strong magnet body are removed from the magnetic filter screen.

[0025] The speaker device provided by this utility model further includes at least one brush head assembly, at least one of the brush head assemblies being adapted to be fixed to the device frame and located near the magnetic filter screen, each of the brush head assemblies being used to scrape off particulate impurities adhering to the magnetic filter screen.

[0026] According to the speaker device provided by this utility model, each of the brush head assemblies includes:

[0027] A fixing base, adapted to be fixed to the equipment frame;

[0028] Flexible bristles are disposed on the side of the fixed substrate facing the magnetic filter, and the bristle tips of the flexible bristles maintain pressure contact with the outer surface of the magnetic filter.

[0029] According to the speaker device provided by this utility model, when two brush head assemblies are provided, the two brush head assemblies are arranged opposite to each other, one of the brush head assemblies is located on the outside of the magnetic filter, and the other brush head assembly is located on the inside of the magnetic filter.

[0030] A second aspect of this utility model provides a camera device, including a device frame and a speaker device as described in any one of the claims, wherein the speaker device is disposed on the device frame.

[0031] The speaker device provided by this utility model uses a magnetic filter screen surrounding the speaker body, supported by a combination of a drive roller and a driven roller. A strong magnet assembly is mounted on the device frame to remove magnetic impurities from the rotating magnetic filter screen. When the drive unit rotates the output shaft, causing the drive roller to rotate synchronously and drive the magnetic filter screen to roll along its circumference, the metal shavings adsorbed on the surface of the magnetic filter screen are carried away. When the magnetic filter screen with adsorbed metal shavings rolls past the position of the strong magnet assembly (cleaning point), the local magnetic field generated by the strong magnet assembly, which is much stronger than the magnetic field of the magnetic filter screen itself, strongly attracts the metal shavings originally attached to the magnetic filter screen and peels them off, capturing them on or near the surface of the strong magnet assembly. This achieves automatic removal of metal dust adsorbed on the magnetic filter screen, preventing the magnetic filter screen from becoming clogged due to metal shavings accumulation, ensuring smooth airflow, and maintaining good acoustic performance (sound quality, loudness) of the speaker.

[0032] Specifically, a magnetic filter is installed around the speaker body to prevent metal debris from entering the speaker's interior. This ensures the speaker's normal operation, avoids damage to the delicate voice coil, diaphragm, or magnetic circuit system, significantly reduces the failure rate, and extends the speaker's lifespan. This design is particularly important for camera equipment installed in dusty environments, metal processing environments (factories, workshops), or outdoor areas prone to metal erosion particles. A strong magnet assembly provides an attraction force far exceeding the filter's own magnetism, ensuring effective stripping and capture of ferromagnetic metal debris of various sizes. This removes magnetic impurities from the rotating magnetic filter and maintains its attraction capacity.

[0033] Furthermore, the speaker device provided in this embodiment can automatically trigger a cleaning cycle through a preset program, eliminating the need for manual intervention in filter disassembly, cleaning, and installation. This saves on manual cleaning costs and time, especially for camera equipment installed at high or inaccessible locations (such as high-altitude monitoring and inside industrial equipment). It improves the long-term reliability and maintenance-free operation of the speaker in environments containing metal dust, effectively solving the problem of easy clogging and difficult cleaning of traditional fixed filters. It is suitable for camera equipment in fields such as security monitoring and industrial equipment.

[0034] The camera device provided in this embodiment of the present invention, because it includes the above-described speaker device, possesses all the advantages of the above-described speaker device. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the loudspeaker device provided in Embodiment 1 of this utility model.

[0037] Figure 2 This is a front view of the loudspeaker device provided in Embodiment 1 of this utility model.

[0038] Figure 3 This is a schematic diagram of the loudspeaker device provided in Embodiment 2 of this utility model.

[0039] Figure 4 This is a front view of the loudspeaker device provided in Embodiment 2 of this utility model.

[0040] Figure label:

[0041] 10. Speaker body;

[0042] 20. Magnetic filter screen; 21. Engaging part; 22. Filtering area; 30. Strong magnet assembly; 40. Drive assembly; 41. Drive component; 42. Active roller; 421. First engagement structure; 43. Driven roller; 431. Second engagement structure; 50. Brush head assembly; 51. Fixed base; 52. Flexible bristles. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0044] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0045] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] Figure 1 This is a schematic diagram of the loudspeaker device provided in Embodiment 1 of this utility model. Figure 2 This is a front view of the loudspeaker device provided in Embodiment 1 of this utility model.

[0048] See Figure 1 and Figure 2This utility model provides a loudspeaker device, which includes a loudspeaker body 10, a magnetic filter 20, a strong magnet assembly 30, and a driving assembly 40.

[0049] Since the audio function of the camera equipment has become a key interactive module, especially in high-dust environments such as metal processing workshops and casting production lines, the camera equipment needs to provide real-time feedback on equipment status, issue safety warnings, or conduct voice communication through speakers. The speaker body 10 is mounted to the equipment frame via an extended bracket. The bracket of the speaker body 10 is connected to the side of the speaker body 10 and is perpendicular to the axis of the speaker body 10. In other words, the bracket of the speaker body 10 is parallel to the rotation axis of the magnetic filter 20 and will not interfere with the rotation of the magnetic filter 20.

[0050] The magnetic filter 20 is typically made of metal wire mesh (such as stainless steel wire). The magnetic filter 20 is placed around the perimeter of the speaker body 10, that is, the magnetic filter 20 is arranged around the perimeter of the speaker body 10. The magnetic filter 20 itself has weak magnetism (such as ferromagnetic material), which can initially attract metal shavings.

[0051] The drive assembly 40 includes a drive element 41, a drive roller 42, and a driven roller 43. The drive element 41 is used for mounting to the equipment frame and can be a small stepper motor or a low-speed DC motor with a reduction gearbox to ensure smooth and controllable torque. The drive element 41, mounted to the equipment frame, has an output shaft for transmitting torque.

[0052] The driving roller 42 and the driven roller 43 are typically cylindrical or elliptical in shape, and both can be made of wear-resistant plastic (such as POM) or metal. The driving roller 42 and the driven roller 43 work together to support the magnetic filter screen 20.

[0053] The drive roller 42 is rotatably mounted to the equipment frame via bearings or other components. The drive roller 42 is connected to the output shaft via a coupling or directly for driving the magnetic filter screen 20 to rotate. The driven roller 43 is also rotatably mounted to the equipment frame via bearings or other components. The driven roller 43 is spaced apart from the drive roller 42. The diameters of the drive roller 42 and the driven roller 43, as well as the distance between them, must ensure stable support and drive of the entire magnetic filter screen 20, maintaining appropriate tension during rotation and preventing shifting or jamming.

[0054] The strong magnet assembly 30 is located on the magnetic filter 20 away from the speaker body 10, that is, the strong magnet assembly 30 is located on the outside of the magnetic filter 20, facing or close to a specific position (such as a cleaning point) on the rotation path of the magnetic filter 20. The strong magnet assembly 30 is used to remove magnetic impurities (such as metal impurities) on the magnetic filter 20.

[0055] The strong magnet assembly 30 includes a strong magnet body and a demagnetizing component. The strong magnet body includes one or more high-performance permanent magnets (such as neodymium iron boron magnets) capable of generating a strong local magnetic field. The magnetic force of the strong magnet body is greater than that of the magnetic filter screen 20, used to remove magnetic impurities from the magnetic filter screen 20. The strong magnet body can be embedded in the equipment frame. The demagnetizing component is located at the location of the strong magnet body and is used to demagnetize the strong magnet body, so that the strong magnet body can remove magnetic impurities from the magnetic filter screen 20. The demagnetizing component includes a controllable electromagnetic demagnetizing coil or a magnetic shielding mechanism. For example, an electromagnetic coil can be installed near the location of the strong magnet body. When the electromagnetic coil is energized, it can generate a reverse magnetic field to cancel the magnetic field of the permanent magnet, thereby demagnetizing the strong magnet body.

[0056] Additionally, the speaker unit can be connected to the control system of the camera equipment. The control system includes a microcontroller (MCU) or a timing circuit to enable an automatic periodic start-up mode. The control system can send control signals to the drive unit 41 (motor) and the demagnetizing assembly based on preset time intervals (such as every hour, once a day, etc.) or sensor signals (such as detecting a decrease in speaker power, high ambient dust concentration, etc.).

[0057] When the loudspeaker unit is operating under normal conditions, the loudspeaker body 10 works normally and emits sound. Metal dust and debris (such as iron filings and steel filings) in the environment are attracted to the surface of the magnetic filter 20 by its weak magnetism, preventing them from entering the interior of the loudspeaker body 10 and affecting the sound quality or damaging the diaphragm. At this time, the strong magnet body generates a strong magnetic field and is in an "attractive" state, and the demagnetizing components (such as electromagnetic coils) are not engaged.

[0058] When the speaker unit is operating under clean conditions, the drive unit 41 (motor) starts, driving the output shaft to rotate. The output shaft drives the drive roller 42 to rotate synchronously, thereby causing the magnetic filter screen 20 to roll smoothly along its circumference. At the same time, the driven roller 43 cooperates with the drive roller 42 to provide support, maintain the tension of the magnetic filter screen 20, and assist in rotation, ensuring that the magnetic filter screen 20 moves synchronously and stably throughout the entire circumference without slipping or deformation.

[0059] As the magnetic filter 20 rolls, the metal shavings adsorbed on its surface are carried away. When the magnetic filter 20 with adsorbed metal shavings rolls past the position (cleaning point) of the strong magnet assembly 30, the local magnetic field generated by the strong magnet assembly 30, which is much stronger than the magnetic field of the magnetic filter 20 itself, will strongly attract the metal shavings that were originally attached to the magnetic filter 20 and peel them off from the magnetic filter 20, capturing them on the surface of the strong magnet assembly 30 or in the collection area nearby.

[0060] After the magnetic filter 20 completes a certain angle of rotation (e.g., one full rotation or half a rotation, ensuring all parts pass through the cleaning points), the control system sends a signal to activate the demagnetizing assembly: if an electromagnetic demagnetizing coil is used, the coil is energized, generating a magnetic field with controllable strength opposite to the permanent magnet's magnetic field direction, instantly canceling or significantly weakening the permanent magnet's magnetic field strength in the collection area, causing it to lose its attraction to metal shavings. If a magnetic shielding mechanism is used, a magnetic baffle is driven to insert between the permanent magnet and the collection area, shielding the magnetic field and similarly demagnetizing the collection area.

[0061] Alternatively, a collection box or collection trough can be placed below the strong magnet assembly 30. The metal shavings, no longer bound by magnetism, will fall into the collection trough or collection box under gravity. Alternatively, a slight vibration or scraper can be designed to assist in their removal. After the demagnetization process is completed (the electromagnetic coil is de-energized or the shielding plate is removed), the strong magnet assembly 30 returns to a strong magnetic field state, ready for the next adsorption.

[0062] After cleaning, the magnetic filter 20 continues to roll, or the control system reverses the motor to return the filter to its initial position, the motor stops, and the speaker returns to normal operation. Metal shavings in the collection tank or box can be manually cleaned during regular equipment maintenance.

[0063] It is understood that the loudspeaker device provided in this embodiment of the present invention uses a magnetic filter screen 20 to cover the outer periphery of the loudspeaker body 10 and supports the magnetic filter screen 20 by the cooperation of the active roller 42 and the driven roller 43, so that the strong magnet assembly 30 is installed on the equipment frame to remove magnetic impurities on the rotating magnetic filter screen 20. When the drive unit 41 drives the output shaft to rotate, causing the active roller 42 to rotate synchronously, driving the magnetic filter screen 20 to roll along its circumference, the metal shavings adsorbed on the surface of the magnetic filter screen 20 are carried away. When the magnetic filter screen 20 with adsorbed metal shavings rolls past the position (cleaning point) of the strong magnet assembly 30, the local magnetic field generated by the strong magnet assembly 30, which is much stronger than the magnetism of the magnetic filter screen 20 itself, will strongly adsorb the metal shavings originally attached to the magnetic filter screen 20 and peel them off from the magnetic filter screen 20, capturing them on the surface of the strong magnet assembly 30 or in the collection area nearby. This achieves automatic removal of metal dust adsorbed on the magnetic filter screen 20, preventing the magnetic filter screen 20 from being blocked by the accumulation of metal shavings, ensuring smooth airflow, and maintaining good acoustic performance (sound quality, loudness) of the speaker.

[0064] Specifically, a magnetic filter 20 is installed around the speaker body 10 to prevent metal debris from entering the interior of the speaker body 10, thus ensuring the normal operation of the speaker body 10, preventing damage to the delicate voice coil, diaphragm, or magnetic circuit system, significantly reducing the failure rate, and extending the speaker's service life. This design is particularly important for camera equipment installed in dusty, metal processing environments (factories, workshops) or outdoor areas prone to metal erosion particles. The strong magnet assembly 30 provides an adsorption force far exceeding the magnetism of the filter itself, ensuring effective stripping and capture of ferromagnetic metal debris of various sizes, thereby removing magnetic impurities from the rotating magnetic filter 20 and maintaining its adsorption capacity.

[0065] Furthermore, the speaker device provided in this embodiment can automatically trigger a cleaning cycle through a preset program, eliminating the need for manual intervention in filter disassembly, cleaning, and installation. This saves on manual cleaning costs and time, especially for camera equipment installed at high or inaccessible locations (such as high-altitude monitoring and inside industrial equipment). It improves the long-term reliability and maintenance-free operation of the speaker in environments containing metal dust, effectively solving the problem of easy clogging and difficult cleaning of traditional fixed filters. It is suitable for camera equipment in fields such as security monitoring and industrial equipment.

[0066] Continue reading Figure 1 In some embodiments of this utility model, the magnetic filter screen 20 is provided with a continuous meshing portion 21 along the circumference. The "continuous meshing portion 21" can be a toothed rack (equivalent to a toothed ring) integrally formed along the circumference, or it can be a flexible strip with teeth or grooves fixed near the edge of the magnetic filter screen 20.

[0067] The outer circumferential surface of the drive roller 42 is provided with a first meshing structure 421, which meshes with the meshing part 21 to form a transmission connection. The first meshing structure 421 may be a gear tooth or gear protrusion that matches the meshing part 21.

[0068] The outer circumferential surface of the driven roller 43 is provided with a second meshing structure 431, which meshes with the meshing part 21 to form a transmission connection. The second meshing structure 431 is the same as the first meshing structure 421, and can also be a gear tooth or gear protrusion that matches the meshing part 21.

[0069] When the drive unit 41 (motor) starts, it drives the output shaft to rotate. The output shaft drives the drive roller 42 to rotate synchronously. The first engagement structure 421 of the drive roller 42 engages with the engagement part 21 on the circumference of the magnetic filter screen 20, driving the magnetic filter screen 20 to roll smoothly along its circumference. At the same time, the second engagement structure 431 of the driven roller 43 also engages with the engagement part 21 of the magnetic filter screen 20. They cooperate to provide support, maintain the tension of the magnetic filter screen 20, and assist in rotation, ensuring that the magnetic filter screen 20 moves synchronously and stably on the entire circumference without slipping or deformation.

[0070] Continue reading Figure 1 In some embodiments of this utility model, the magnetic filter 20 has a first end and a second end that are arranged opposite to each other along the length direction, and the area of ​​the magnetic filter 20 located between the first end and the second end is defined as the filter area 22.

[0071] The magnetic filter screen 20 is provided with a meshing part 21 near the first end and the second end. The meshing part 21 at each end meshes with the first meshing structure 421 and the second meshing structure 431.

[0072] In essence, this embodiment of the invention concentrates the meshing portion 21 near the first and second ends (i.e., the edge areas at both ends of the filter screen) where the rigidity is stronger. The middle filtration area 22 does not participate in the meshing transmission and only serves as a functional filtration area. The free bending or slight deformation of the filtration area 22 does not affect the transmission. The transmission load is entirely borne by the rigid meshing portion 21 near both ends of the magnetic filter screen 20, fundamentally avoiding the collapse, twisting, or tooth loss of the flexible mesh belt in the middle during transmission due to force, ensuring that the transmission path is always controllable.

[0073] Furthermore, the meshing part 21 is located near the first and second ends of the magnetic filter screen 20, which is equivalent to establishing synchronous drive anchor points at both ends of the magnetic filter screen 20. The driving roller 42 and the driven roller 43 apply symmetrical traction force to the filter screen through the meshing part 21 at both ends, forming a stable two-point positioning. Even if there is flexible deformation in the middle of the magnetic filter screen 20, both ends are always precisely constrained on the transmission path, effectively suppressing the axial (width direction) movement and deviation of the magnetic filter screen 20, and ensuring the trajectory accuracy of linear or circular motion.

[0074] In some embodiments of this utility model, the meshing part 21 includes a toothed ring arranged along the circumferential direction of the magnetic filter screen 20; the first meshing structure 421 and the second meshing structure 431 both include gear protrusions, and the gear protrusions mesh with the toothed ring.

[0075] Understandably, in this embodiment, the tooth grooves of the gear ring and the protruding teeth of the gear form a rigid geometric fit (similar to a gear-rack transmission). Power is transmitted through direct compression and pushing via the tooth surface, without relying on surface friction. This converts the tension of frictional transmission into compressive stress on the tooth surface, preventing the filter screen from stretching and deforming. Even if metal shavings accumulate on one side of the magnetic filter screen 20, the rigid meshing can still maintain a uniform load, preventing the magnetic filter screen 20 from deviating and getting stuck.

[0076] In addition, the engaging portion 21 may also include an array of slots extending through the edge of the magnetic filter 20, and both the first engaging structure 421 and the second engaging structure 431 include protrusions embedded in the slots. Alternatively, the engaging portion 21 may also include a hole structure arranged at equal intervals, and both the first engaging structure 421 and the second engaging structure 431 include an array of pins inserted into the holes.

[0077] In some extended embodiments of this utility model, the filter area 22 of the magnetic filter 20 is divided into a functional area (not shown in the figure) and a closed area (not shown in the figure). The functional area is provided with multiple filter holes; the surface of the closed area is closed.

[0078] When the magnetic filter 20 remains stationary, the functional area corresponds to the diaphragm projection area of ​​the speaker body 10.

[0079] Essentially, outside the diaphragm projection area (functional area) of the speaker body, the filter surface is completely sealed with a non-porous metal plate or sealing coating, with filter holes only opened in the functional area directly opposite the diaphragm. The sealed area forms an acoustic barrier, forcing sound waves in front of and behind the diaphragm to flow only through the holes in the functional area, eliminating lateral sound leakage. Furthermore, the sealed area can completely prevent dust from entering from the non-functional area, while increasing the overall bending section modulus of the magnetic filter 20. When the magnetic filter 20 is cleaned and rolled, the sealed area provides a rigid support base for the meshing part 21 (tooth ring), preventing the magnetic filter 20 from wrinkling due to meshing.

[0080] Figure 3 This is a schematic diagram of the loudspeaker device provided in Embodiment 2 of this utility model. Figure 4 This is a front view of the loudspeaker device provided in Embodiment 2 of this utility model.

[0081] See Figure 3 and Figure 4 Based on the above embodiments, the speaker device further includes at least one brush head assembly 50, that is, at least one brush head assembly 50 is provided, and there may be two or more. At least one brush head assembly 50 is adapted to be fixed to the device frame and located near the magnetic filter screen 20. Each brush head assembly 50 is used to scrape off particulate impurities adhering to the magnetic filter screen 20.

[0082] As the magnetic filter 20 rolls, the brush head assembly 50 squeezes and scrapes the surface of the magnetic filter 20 to remove large non-metallic impurities and sticky dirt, reducing the load on the strong magnetic adsorption and preventing the non-metallic impurity layer from blocking metal shavings. The brush head assembly 50 and the strong magnet assembly 30 work together to achieve dual cleaning, preventing metal shavings and non-metallic impurities from mixing and forming hardened dirt, thereby improving the magnetic adsorption efficiency.

[0083] Furthermore, each brush head assembly 50 includes a fixed base 51 and flexible bristles 52. The fixed base 51 may be made of plastic and is suitable for fixing to the equipment frame. The flexible bristles 52 are located on the side of the fixed base 51 facing the magnetic filter 20, and the tips of the flexible bristles 52 maintain pressure contact with the outer surface of the magnetic filter 20. The flexible bristles 52 may be made of tapered nylon bristles so that impurities automatically slide off upon contact.

[0084] In some extended embodiments of this utility model, when two brush head assemblies 50 are provided, the two brush head assemblies 50 are arranged opposite to each other, with one brush head assembly 50 located on the outside of the magnetic filter screen 20 and the other brush head assembly 50 located on the inside of the magnetic filter screen 20.

[0085] In other words, this embodiment achieves deep cleaning of the magnetic filter 20 by forming a three-dimensional cleaning force field and a two-way clamping mechanism through the design of the inner and outer double brush heads facing each other.

[0086] The outer brush head can be made of hard nylon bristles, while the inner brush head can be made of flexible silicone bristles. The outer brush head removes clumps of dirt from the outside of the magnetic filter 20, while the inner brush head removes embedded particles inside the magnetic filter 20. The bidirectional brushing generates shearing force, squeezing out impurities that clog the filter holes, which can improve cleaning efficiency.

[0087] In some extended embodiments of this utility model, the driven roller 43 is mounted on the equipment frame via an elastic bracket. The driven roller 43, mounted via an elastic bracket, possesses dynamic self-adjusting capability, solving the multidimensional error problem that is difficult to overcome with rigid mounting, and avoiding tearing of the magnetic filter screen 20 edges due to tolerances.

[0088] The elastic support consists of a spring assembly and a rubber damper. The spring assembly is made of symmetrically arranged silicon-manganese spring steel, which provides radial stiffness. The rubber damper consists of an axial bushing and a radial limiting ring. When the tension of the magnetic filter 20 increases, the spring is compressed and bent, and the rubber bushing compresses and stores energy to dissipate the impact energy. When the tension recovers, the spring releases energy and resets.

[0089] This utility model embodiment also provides a camera device, which includes a device frame and a speaker device as described above, wherein the speaker device is disposed on the device frame.

[0090] It is understood that the camera device provided in this embodiment of the present invention, because it includes the above-mentioned speaker device, possesses all the advantages of the above-mentioned speaker device.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A speaker apparatus characterized by comprising: include: Speaker body for mounting to the equipment frame; A magnetic filter screen is installed around the speaker body; Driver components, including: A drive unit for mounting to the device frame, the drive unit having an output shaft; An active roller is rotatably mounted to the device frame and drivenly connected to the output shaft. The active roller is used to support the magnetic filter screen and to drive the magnetic filter screen to rotate. The driven roller is rotatably mounted to the equipment frame and cooperates with the driving roller to support the magnetic filter screen; A strong magnet assembly is used to mount to the equipment frame and is used to remove magnetic impurities from the rotating magnetic filter screen.

2. The speaker apparatus according to claim 1, wherein The magnetic filter screen has continuous meshing parts along the circumferential direction; The outer circumferential surface of the drive roller is provided with a first meshing structure, and the first meshing structure meshes with the meshing part. The outer circumferential surface of the driven roller is provided with a second meshing structure, which meshes with the meshing part.

3. The speaker apparatus according to claim 2, wherein The magnetic filter has a first end and a second end that are disposed opposite to each other along its length, and the region of the magnetic filter between the first end and the second end is defined as the filtering area. The magnetic filter screen is provided with the meshing part near the first end and the second end, and the meshing part at each end meshes with the first meshing structure and the second meshing structure.

4. The speaker apparatus according to claim 3, wherein The meshing part includes a toothed ring arranged along the circumferential direction of the magnetic filter screen; Both the first meshing structure and the second meshing structure include a gear protrusion, which meshes with the gear ring.

5. The speaker apparatus according to claim 3, wherein The magnetic filter screen is divided into a functional area and a closed area. The functional area has multiple filter holes that run through it, and the closed area has a sealed surface. When the magnetic filter remains stationary, the functional area corresponds to the diaphragm projection area of ​​the speaker body.

6. The speaker apparatus according to claim 1, wherein The strong magnet assembly includes: A strong magnet body, suitable for mounting to a device frame, wherein the magnetic force of the strong magnet body is greater than the magnetic force of the magnetic filter screen, for stripping magnetic impurities from the magnetic filter screen; A demagnetizing component is provided at the location of the strong magnet body. The demagnetizing component is used to demagnetize the strong magnet body so that magnetic impurities stripped from the strong magnet body are removed from the magnetic filter screen.

7. The loudspeaker apparatus of any one of claims 1-6, wherein, It also includes at least one brush head assembly, at least one of the brush head assemblies being adapted to be fixed to the device frame and located near the magnetic filter screen, each of the brush head assemblies being used to scrape off particulate impurities adhering to the magnetic filter screen.

8. The loudspeaker device according to claim 7, characterized in that, Each of the brush head assemblies includes: A fixing base, adapted to be fixed to the equipment frame; Flexible bristles are disposed on the side of the fixed substrate facing the magnetic filter, and the bristle tips of the flexible bristles maintain pressure contact with the outer surface of the magnetic filter.

9. The loudspeaker device according to claim 7, characterized in that, When the brush head assembly is configured as two, the two brush head assemblies are arranged opposite each other, with one brush head assembly located on the outside of the magnetic filter and the other brush head assembly located on the inside of the magnetic filter.

10. A camera device, characterized in that, It includes a device frame and a loudspeaker device as described in any one of claims 1 to 9, wherein the loudspeaker device is disposed in the device frame.

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