A dustproof loudspeaker
By introducing an adaptive dustproof mechanism into the speaker and using an electromagnet to control the movement of the follower plate, the problem of the speaker's dustproof hole not being able to open and close adaptively is solved. This achieves the speaker being sealed when idle and ensuring sound quality when in use, improving the stability and ease of use of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU SHENGUANG ELECTRONIC TECH CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-06-09
AI Technical Summary
The dust vents of existing speakers cannot open and close automatically, causing dust to enter the speaker when it is not in use, affecting the stability of the device and the sound quality.
An adaptive dustproof mechanism was designed, including a follower plate, a mounting plate, an electromagnet, and a dustproof top spring. The movement of the follower plate is controlled by the energization and de-energization of the electromagnet, thereby realizing the automatic opening and closing of the dustproof mechanism and ensuring that the speaker is dustproof and the sound quality is not affected during use.
It achieves effective sealing of the speaker when idle to prevent dust from entering, while ensuring sound quality transmission during use, extending equipment life and improving stability, and providing a convenient automated operation experience.
Smart Images

Figure CN224343380U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of loudspeaker technology, and in particular to a dustproof loudspeaker. Background Technology
[0002] A loudspeaker is a transducer that converts electrical signals into sound signals, enabling sound reproduction and playback. It is a key component of audio equipment. For example, patent application number CN201910428082.2 discloses an ultra-thin loudspeaker, including a frame, a suspension, a body, a spider, a spider ring, a voice coil skeleton, and a magnet structure. One end of the suspension is connected to the frame, and the other end is connected to the body. One end of the spider is connected to the frame, and the other end is connected to the spider ring. The spider ring and the voice coil skeleton are both connected to the bottom of the body. The magnet structure is connected to the frame and has a groove. The voice coil skeleton extends into the groove, and the spider ring is located on the outside of the magnet structure. This invention is a novel structural design that allows even a very thin speaker to maintain effective vibration of the body while preventing the body from contacting other structures during vibration. This ensures that the audio playback quality of this invention is similar to that of a standard-sized speaker, solving the problem of poor audio quality in ultra-thin speakers. Since a large amount of dust inside the speaker can affect its performance, the speaker housing is currently equipped with evenly distributed and small dustproof holes to achieve a dustproof effect while ensuring the speaker's sound quality.
[0003] As with the existing dustproof structure of the speaker mentioned above, its dustproof hole does not have the function of adaptive opening and closing. When the speaker is not in use, dust can still pass through the dustproof hole and enter the speaker's interior, resulting in dust accumulation inside the speaker, poor stability, and low practicality. Utility Model Content
[0004] This utility model relates to a dustproof speaker, which has an adaptive dustproof mechanism. The adaptive dustproof mechanism can adaptively switch between open and closed states according to the working state of the speaker body (power on / off parameters, etc.). Thus, when the speaker body is on, it can ensure sound quality while preventing dust. When the speaker body is closed, the adaptive dustproof mechanism can also automatically close to completely seal the speaker body, thereby preventing dust and impurities from entering the interior of the speaker body. It is convenient and flexible to use and has strong practicality.
[0005] This utility model provides a dustproof loudspeaker, specifically including: a loudspeaker assembly, the loudspeaker assembly consisting of a loudspeaker body and an adaptive dustproof mechanism, the adaptive dustproof mechanism including a follower plate and a mounting plate, the loudspeaker body being fixedly mounted on the rear side of the follower plate, and the mounting plate being inserted into the interior of the follower plate.
[0006] Furthermore, the outer side of the follower plate is provided with a track block, and the inner side of the mounting plate is provided with a track groove, and the track block is inserted into the inner side of the track groove.
[0007] Furthermore, the cross-sectional shape of the track block is "L".
[0008] Furthermore, the dustproof adaptation mechanism also includes an electromagnet, which is fixedly installed inside the mounting plate. An adaptation magnetic block is provided on the side of the follower plate. When the electromagnet is energized, it will attract the adaptation magnetic block, and the electromagnet is electrically connected to the power supply circuit of the speaker body.
[0009] Furthermore, the electromagnet is provided with a dustproof top spring on its side, and the two ends of the dustproof top spring abut against the side of the electromagnet and the side of the follower plate, respectively.
[0010] Furthermore, both the mounting plate and the follower plate have uniformly distributed functional holes inside, and when the electromagnet is not energized, the functional holes of the mounting plate and the follower plate are misaligned under the action of the dustproof top spring.
[0011] This invention provides a dustproof speaker, which has the following advantages:
[0012] 1. Highly efficient and reliable dustproof function: The adaptive dustproof mechanism can accurately and automatically switch on and off according to the working status of the speaker body. When the speaker body is closed, the electromagnet is de-energized. Under the action of the dustproof top spring, the functional holes of the follower plate and the mounting plate are misaligned, so that the adaptive dustproof mechanism forms a closed plate, completely sealing the speaker body. This effectively isolates dust and impurities, preventing them from entering the speaker when it is not in use, ensuring a clean and stable internal environment, greatly extending the service life of the speaker, and reducing malfunctions caused by dust accumulation.
[0013] 2. Excellent sound quality assurance: When the speaker body is turned on, the electromagnet is energized, attracting the adaptive magnetic block and moving the follower plate, compressing the dustproof top spring, so that the follower plate and the functional hole of the mounting plate are aligned, creating a smooth channel for sound propagation, ensuring normal sound transmission, minimizing adverse effects on sound quality, achieving a perfect balance between dustproof and sound quality assurance, and meeting users' needs for high-quality sound.
[0014] 3. Scientific and stable structural design: Through the ingenious cooperation between the track block and the track groove, the unique "L"-shaped cross section of the track block can accurately limit the movement trajectory of the follower plate during the opening and closing process, effectively avoiding skewness, twisting and other situations during movement, preventing the device from jamming and failing, ensuring the stable and reliable operation of the entire dustproof mechanism, and improving the stability and safety of product use.
[0015] 4. Convenient and flexible to use: The opening and closing of the entire dustproof mechanism is based on the working status of the speaker body and is automatically carried out without the need for manual operation. It truly realizes intelligence and automation. Whether it is to ensure sound quality or dust prevention, it can be automatically adjusted as needed, bringing users an extremely convenient and flexible user experience and significantly improving the practicality and applicability of the device. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.
[0017] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the present invention.
[0018] In the attached diagram:
[0019] Figure 1 A schematic diagram of the structure of this utility model is shown.
[0020] Figure 2 The diagram shows the internal structure of this utility model when the functional holes are mutually blocked.
[0021] Figure 3 This utility model is shown Figure 2 Enlarged structural diagram of part A in the middle.
[0022] Figure 4 This utility model is shown Figure 2 Enlarged structural diagram of part B in the middle.
[0023] Figure 5 A structural schematic diagram of the present invention after disassembly is shown.
[0024] Figure 6 This diagram shows the internal structure of the present invention when the functional holes overlap.
[0025] Figure 7 This utility model is shown Figure 6 Enlarged structural diagram of part C in the middle.
[0026] List of reference numerals
[0027] 1. Speaker body;
[0028] 2. Adaptive dustproof mechanism; 201. Follower plate; 2011. Track block; 2012. Adaptive magnetic block; 2013. Functional hole; 202. Mounting plate; 2021. Track groove; 203. Electromagnet; 2031. Dustproof top spring. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0030] Please refer to Figures 1 to 7 Example 1:
[0031] This utility model proposes a dustproof loudspeaker, comprising: a loudspeaker assembly, which consists of a loudspeaker body 1 and a dustproof adaptation mechanism 2. The dustproof adaptation mechanism 2 includes a follower plate 201 and a mounting plate 202. The loudspeaker body 1 is fixedly mounted on the rear side of the follower plate 201, and the mounting plate 202 is inserted into the interior of the follower plate 201.
[0032] The follower plate 201 has a track block 2011 on its outside and a track groove 2021 inside the mounting plate 202. The track block 2011 is inserted into the track groove 2021. The cross-sectional shape of the track block 2011 is "L". In use, the track groove 2021 can restrict the movement trajectory of the follower plate 201 when it is opened and closed, thereby avoiding the phenomenon of the follower plate 201 becoming skewed or twisted during movement, which would cause the device to jam and fail. The use is stable.
[0033] The dustproof mechanism 2 also includes an electromagnet 203, which is fixedly installed inside the mounting plate 202. The side of the follower plate 201 is provided with an adaptive magnetic block 2012. When the electromagnet 203 is energized, it will attract the adaptive magnetic block 2012. The electromagnet 203 is electrically connected to the power supply circuit of the speaker body 1.
[0034] The electromagnet 203 has a dustproof top spring 2031 on its side, with both ends of the dustproof top spring 2031 abutting against the side of the electromagnet 203 and the side of the follower plate 201, respectively. Both the mounting plate 202 and the follower plate 201 have evenly distributed functional holes 2013 inside. When the electromagnet 203 is not energized, the functional holes 2013 of the mounting plate 202 and the follower plate 201 are misaligned under the action of the dustproof top spring 2031. During use, when the speaker body 1 is closed, the adaptive dustproof mechanism 2 can also automatically close, completely sealing the speaker body 1. When the speaker body 1 is closed, the power supply to the electromagnet 203 is also turned off. Therefore, under the action of the dustproof top spring 2031, the functional holes 2013 of the follower plate 201 and the mounting plate 202 are misaligned, thus sealing all functional holes 2013, making the adaptive dustproof mechanism 2 more effective. The dustproof mechanism 2 forms a closed plate, which can prevent dust and impurities from entering the speaker body 1 when it is not in use, ensuring a stable internal environment and stable operation. When the speaker body 1 is turned on, the dustproof mechanism 2 can also be turned on automatically, which can protect the sound quality while preventing dust. When the speaker body 1 is powered on, the electromagnet 203 will also be energized. The electromagnet 203 can drive the follower plate 201 to move and compress the dustproof top spring 2031 through the secondary adsorption magnetic block 2012. After the follower plate 201 moves, the follower plate 201 and the functional hole 2013 of the mounting plate 202 can overlap each other, so that the sound can pass through smoothly and ensure the normal propagation of the sound. At the same time, it can also block the dust from entering the speaker body 1, realizing the dual functions of dust prevention and sound quality protection, which is flexible and convenient to use.
[0035] The working principle of this embodiment is as follows: The adaptive dustproof mechanism 2 can adaptively switch between open and closed states according to the working state of the speaker body 1. When the speaker body 1 is closed, the adaptive dustproof mechanism 2 can also automatically close to completely seal the speaker body 1. When the speaker body 1 is closed, the power supply of the electromagnet 203 is also turned off. Thus, under the action of the dustproof top spring 2031, the functional holes 2013 of the follower plate 201 and the mounting plate 202 are misaligned, thereby sealing all functional holes 2013. This makes the adaptive dustproof mechanism 2 form a closed plate, which can prevent dust and impurities from entering the speaker body 1 when it is not in use. Inside the speaker body 1, when the speaker body 1 is opened, the dustproof mechanism 2 can also be opened automatically, which can protect against dust and ensure sound quality. When the speaker body 1 is powered on, the electromagnet 203 will also be powered on, so the electromagnet 203 can drive the follower plate 201 to move and compress the dustproof top spring 2031 through the secondary adsorption and adaptation magnetic block 2012. After the follower plate 201 moves, the follower plate 201 and the functional hole 2013 of the mounting plate 202 can overlap each other, so that the sound can pass through smoothly and ensure the normal propagation of the sound. At the same time, it can also block dust from entering the speaker body 1, realizing the dual functions of dustproof and sound quality protection.
Claims
1. A dustproof loudspeaker, characterized in that, include: The loudspeaker assembly consists of a loudspeaker body (1) and a dustproof adaptation mechanism (2). The dustproof adaptation mechanism (2) includes a follower plate (201) and a mounting plate (202). The loudspeaker body (1) is fixedly installed on the rear side of the follower plate (201), and the mounting plate (202) is inserted into the interior of the follower plate (201).
2. A dustproof loudspeaker according to claim 1, characterized in that, The follower plate (201) has a track block (2011) on its outside, and the mounting plate (202) has a track groove (2021) inside, and the track block (2011) is inserted into the track groove (2021).
3. A dustproof loudspeaker according to claim 2, characterized in that, The cross-sectional shape of the track block (2011) is "L".
4. A dustproof loudspeaker according to claim 3, characterized in that, The dustproof mechanism (2) also includes an electromagnet (203), which is fixedly installed inside the mounting plate (202). The side of the follower plate (201) is provided with an adaptive magnetic block (2012). When the electromagnet (203) is energized, it will attract the adaptive magnetic block (2012). The electromagnet (203) is electrically connected to the power supply circuit of the speaker body (1).
5. A dustproof loudspeaker according to claim 4, characterized in that, The electromagnet (203) is provided with a dustproof top spring (2031) on its side, and the two ends of the dustproof top spring (2031) abut against the side of the electromagnet (203) and the side of the follower plate (201) respectively.
6. A dustproof loudspeaker according to claim 5, characterized in that, The mounting plate (202) and the follower plate (201) are both provided with uniformly distributed functional holes (2013). When the electromagnet (203) is not energized, the functional holes (2013) of the mounting plate (202) and the follower plate (201) are misaligned with each other under the action of the dustproof top spring (2031).