A dustproof new energy vehicle horn and its horn mesh structure

Abstract

This patent application belongs to the field of automotive speaker technology, specifically relating to a speaker mesh structure, including an outer mounting frame, a middle fixed frame, a ring mesh, and a shielding mechanism. The ring mesh is installed between the outer mounting frame and the middle fixed frame. The shielding mechanism includes a drive motor, a fixed rod, a rotating rod, and a shield. The two ends of the fixed rod are vertically arranged at the lower part of the speaker mesh, and the two sides of the shield are fixedly connected to the rotating rod and the fixed rod, respectively. The drive motor is installed inside the middle fixed frame and can drive the rotating rod to rotate forward and backward around the center of the ring mesh, so that the rotating rod drives the shield to open or close. The rotating rod is provided with an elastic scraper that abuts against the ring mesh, and the fixed rod is provided with an elastic baffle that abuts against the ring mesh. The outer mounting frame is provided with a collection groove below the fixed rod. It also relates to a dustproof new energy vehicle speaker, including the above-mentioned speaker mesh, which can actively prevent dust when the speaker is not in use and can automatically clean the dust on the mesh surface after each use.

Description

Technical Field

[0001] This invention relates to the field of automotive speaker technology, specifically to a dustproof new energy vehicle speaker and its speaker mesh structure. Background Technology

[0002] Speaker grilles are crucial protective components for sound-producing devices such as car audio systems and external warning horns in new energy vehicles. They typically consist of an outer mounting frame, a middle fixed frame, and a ring mesh, allowing sound to propagate effectively while preventing larger foreign objects from entering the speaker. Over long-term use, fine dust particles in the air can easily adhere to the mesh openings, leading to reduced sound propagation efficiency and degraded sound quality.

[0003] Therefore, existing technologies have developed structural designs for dust removal inside audio equipment. For example, Chinese utility model patent CN215818506U discloses a highly integrated car audio system, which includes a car audio mounting frame, a car audio main body mounting plate, and a car audio dust removal device. Specifically, the car audio system has a cleaning sliding groove on the outside of the car audio main body mounting plate, and a manually rotatable dust removal brush is installed in the groove. When cleaning is required, the user opens the car audio housing and manually rotates the dust removal brush to move it along the cleaning sliding groove, sweeping the dust inside the car audio mounting frame to the dust removal port at the bottom for discharge.

[0004] This solution addresses the issue of dust accumulation inside the speaker to some extent, but its dust removal operation relies on manual rotation of the brush and cannot proactively prevent dust from entering during idle periods when the speaker is not playing. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a speaker mesh structure that can actively prevent dust when the speaker is not in use and can automatically clean the dust on the mesh surface after each use.

[0006] The technical solution adopted in this invention is as follows: A loudspeaker mesh structure includes an outer mounting frame, a middle fixed frame, and a ring mesh. The ring mesh is installed between the outer mounting frame and the middle fixed frame. It also includes a shielding mechanism, which comprises a drive motor, a fixed rod, a rotating rod, and a shielding cover. The fixed rod has two ends vertically positioned at the lower part of the loudspeaker mesh and fixedly connected to the outer mounting frame and the middle fixed frame, respectively. The shielding cover has two sides fixedly connected to the rotating rod and the fixed rod, respectively. The drive motor is installed inside the middle fixed frame and can drive the rotating rod to rotate clockwise and counterclockwise around the center of the ring mesh, causing the rotating rod to open or close the shielding cover. The rotating rod has an elastic scraper that rests against the ring mesh, and the fixed rod has an elastic baffle that rests against the ring mesh. The outer mounting frame has a collection groove below the fixed rod.

[0007] Working principle: When not in use, the elastic scraper and the elastic baffle are in contact with each other, and the shield is fully open to block the horn mesh. When in use, the drive motor drives the rotating rod to rotate, and the rotating rod drives the shield to close, so that the shield is compressed. When switching states, the rotating rod rotates in the opposite direction, the scraper presses against the ring mesh, pushes the dust on the ring mesh, and due to centrifugal force, the dust is concentrated at the outermost end of the scraper until it is fully open, and the dust is pushed into the collection tank.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The rotating rod can be controlled to rotate forward and backward by a drive motor, which can open and close the cover. When not in use, it can be fully opened to tightly cover the ring net and prevent dust and foreign objects from entering; when in use, it can be closed to freely switch between dust prevention and use modes.

[0009] 2. When the shield switches from the retracted state to the open state, the rotating rod rotates in the opposite direction, and the elastic scraper on it moves closely against the surface of the ring mesh, pushing the dust deposited on the mesh; using the centrifugal force generated by the rotation, the dust is concentrated at the outermost end of the scraper, and finally pushed into the collection trough below when fully opened, completing the automatic dust removal.

[0010] 3. The elastic scraper relies on its own elasticity to press against the ring mesh, which can always maintain good contact with the mesh surface, compensate for minor wear or deformation during long-term use, and ensure a stable dust scraping effect.

[0011] 4. When a finger is placed next to the elastic baffle and the blocking mechanism opens, the combination of the elastic scraper and the elastic baffle allows for cushioning by their own elasticity when they are in contact, making it less likely for the finger to be crushed and ensuring safe use.

[0012] In a preferred embodiment of the present invention, the elastic scraper includes a first fixed plate and a first sliding plate. The first fixed plate is mounted on the output shaft of the drive motor. The first fixed plate is provided with a first sliding groove. The first sliding plate can slide along the first sliding groove and is connected to the first fixed plate by a first compression spring.

[0013] In a preferred embodiment of the present invention, the elastic baffle includes a second fixed plate and a second sliding plate. The second fixed plate is installed between the outer mounting frame and the middle fixed frame. The second fixed plate is provided with a second sliding groove. The second sliding plate can slide along the second sliding groove and is connected to the second fixed plate by a second compression spring.

[0014] Beneficial effects: The above settings reduce the peak torque when the elastic baffle and elastic scraper come into contact, thus reducing the impact load on the transmission parts; and the elastic retraction when a finger accidentally enters the closed area improves safety.

[0015] In a preferred embodiment of the present invention, the first sliding plate is a T-shaped plate. The vertical part of the T-shaped plate slides along the first sliding groove. One side of the flat part of the T-shaped plate blocks the first sliding groove. When the other end of the flat part abuts against the elastic baffle, a cavity aligned with the collection groove is formed.

[0016] Beneficial effects: The straight part of the T-shaped plate extends and covers the opening of the first sliding groove, forming a barrier. When the scraper is moving or stationary, it can prevent the dust scraped up from entering the first sliding groove. When the other end of the straight part abuts against the elastic baffle, it can guide the dust in the cavity into the collection groove. During the rotation of the elastic baffle, the vertical part scrapes the dust, and due to the obstruction at the other end of the straight part, the dust is not easily blown to the outside.

[0017] In a preferred embodiment of the present invention, when the shield is fully opened, the drive motor drives the other end of the straight part to strike the elastic baffle, causing the first sliding plate to vibrate and shake the internal dust into the collection tank.

[0018] Beneficial effects: The above settings enable self-cleaning of the first sliding plate, making it less likely for dust to remain inside the cavity.

[0019] In a preferred embodiment of the present invention, the collection trough includes a first slot, a connecting hole, and a second slot arranged from top to bottom. The first slot is connected to the second slot through the connecting hole. An elastic baffle is fixedly connected to a movable door in the first slot. When the baffle is retracted, the movable door blocks the connecting hole.

[0020] Working principle: When the shield opens, the other end of the straight part of the T-shaped plate of the elastic scraper first contacts the elastic baffle. At the same time as the first compression spring is compressed, the elastic baffle can be compressed to a certain extent. When the elastic baffle is compressed, it drives the movable door to move, opening the connecting hole, so that dust falls into the first slot and can fall into the second slot through the connecting hole. When the shield retracts, the elastic baffle returns to its original position and can push the remaining dust in the first slot into the connecting hole, and then block the connecting hole.

[0021] Beneficial effects: 1. By combining the T-shaped plate with the movable door, when the shield is opened, one end of the T-shaped plate causes the movable door to be driven by the elastic baffle to open the connecting hole, allowing dust to fall smoothly into the second slot; when the shield is retracted, the elastic baffle returns to its original position, and the movable door automatically closes the connecting hole, ensuring that dust can only enter and not exit, preventing the accumulated dust from escaping from the collection slot under the action of vehicle vibration or airflow.

[0022] 2. The elastic baffle itself and the elastic scraper form the first seal, and the movable door closes the connecting hole after the elastic baffle is reset, forming the second seal. The two seals work together to achieve redundant protection.

[0023] 3. The movable door is directly fixed to the elastic baffle and built into the first slot. The entire linkage mechanism does not occupy additional external space and is fully integrated between the outer mounting frame and the middle fixed frame, maintaining the overall miniaturization and high integration of the speaker grille.

[0024] In a preferred embodiment of the present invention, a collection box is detachably installed in the second slot.

[0025] Beneficial effect: By setting up a collection box, it is convenient to collect the dust.

[0026] The present invention also provides a dustproof new energy vehicle horn, including the horn mesh structure described above. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the speaker mesh in Embodiment 1 of the present invention when it is opened; Figure 2 This is a schematic diagram of the retraction process in Embodiment 1 of the speaker mesh structure of the present invention; Figure 3 This is a first perspective sectional view of the speaker mesh structure embodiment one of the present invention; Figure 4 This is a schematic diagram of the structure of the fixing rod and the elastic scraper in Embodiment 1 of the speaker mesh structure of the present invention; Figure 5 yes Figure 3 Enlarged view of the structure at point A; Figure 6 This is a second perspective sectional view of the speaker mesh structure embodiment one of the present invention; Figure 7 yes Figure 6 Enlarged view of the structure at point B.

[0028] The reference numerals in the attached drawings include: outer mounting frame 1, middle fixed frame 2, ring mesh 3, drive motor 4, fixed rod 5, rotating rod 6, shield 7, elastic scraper 8, first fixed plate 81, first sliding plate 82, vertical part 821, horizontal part 822, first compression spring 83, elastic baffle 9, second fixed plate 91, second sliding plate 92, second compression spring 93, collection groove 10, first slot 101, connecting hole 102, second slot 103, movable door 11, and collection box 12. Detailed Implementation

[0029] Typical embodiments embodying the features and advantages of the present invention will be specifically described in the following description. It should be understood that the present invention can have various variations in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations herein are for illustrative purposes only and not intended to limit the present invention.

[0030] In the description of this application, the terms "first", "second", etc. are used only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the structure referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] Example 1 See Figure 1 and Figure 2 As shown, this embodiment discloses a speaker grille structure, including an outer mounting frame 1, a middle fixing frame 2, and a ring mesh 3, wherein the ring mesh 3 is installed between the outer mounting frame 1 and the middle fixing frame 2.

[0032] It also includes a shielding mechanism, which comprises a drive motor 4, a fixed rod 5, a rotating rod 6, and a shielding cover 7. The fixed rod 5 is vertically positioned at both ends at the lower part of the speaker grille and is fixedly connected to the outer mounting frame 1 and the middle fixed frame 2, respectively. The shielding cover 7 is fixedly connected to the rotating rod 6 and the fixed rod 5 on both sides. The shielding cover 7 is made of flexible sound-permeable or sound-impermeable fabric; in this embodiment, a high-density dustproof fabric is used. The shielding cover 7 is installed using screws or Velcro for easy replacement.

[0033] The drive motor 4 is installed inside the central fixed frame 2, and its output shaft is connected to one end of the rotating rod 6 via a reduction gear set, driving the rotating rod 6 to rotate clockwise and counterclockwise around the center of the annular mesh 3. The rotation angle range of the rotating rod 6 is from 0° to approximately 330°, thereby causing the shielding cover 7 to fully open or close.

[0034] See Figure 3 As shown, the rotating rod 6 is equipped with an elastic scraper 8 that rests against the annular mesh 3, and the fixed rod 5 is equipped with an elastic baffle 9 that rests against the annular mesh 3. The outer mounting frame 1 is provided with a collection groove 10 below the fixed rod 5.

[0035] See Figure 4 As shown, the elastic scraper 8 includes a first fixed plate 81 and a first sliding plate 82. The first fixed plate 81 is fixedly mounted on the rotating rod 6 and rotates synchronously with the rotating rod 6. A first sliding groove is provided on the first fixed plate 81, and the first sliding plate 82 can slide along the first sliding groove. One end of the first compression spring 83 abuts against the first fixed plate 81, and the other end abuts against the first sliding plate 82.

[0036] See Figure 5As shown, the elastic baffle 9 includes a second fixed plate 91 and a second sliding plate 92. The two ends of the second fixed plate 91 are respectively fixedly installed between the outer mounting frame 1 and the middle fixed frame 2. A second sliding groove is provided on the second fixed plate 91, and the second sliding plate 92 can slide along the second sliding groove. One end of the second compression spring 93 abuts against the second fixed plate 91, and the other end abuts against the second sliding plate 92.

[0037] In this embodiment, the elastic scraper 8 and the elastic baffle 9 are made of plastic and can deform to a certain extent to adapt to processing errors and structural curvature.

[0038] See Figures 4 to 7 As shown, the first sliding plate 82 is a T-shaped plate. The vertical portion 821 of the T-shaped plate is slidably accommodated in the first sliding groove, and one end of the straight portion 822 of the T-shaped plate extends to cover the opening of the first sliding groove, serving as a dust shield; the other end of the straight portion 822 is used to contact and cooperate with the second sliding plate 92 of the elastic baffle 9. When the shield 7 is fully opened, the other end of the straight portion 822 abuts against the second sliding plate 92, at which time a cavity is formed between the elastic scraper 8 and the elastic baffle 9, which is aligned with the lower collection groove 10.

[0039] See Figure 5 As shown, the collection trough 10 includes a first slot 101, a connecting hole 102, and a second slot 103 arranged sequentially from top to bottom. The first slot 101 is connected to the second slot 103 through the connecting hole 102. A movable door 11 is fixedly connected to the second sliding plate 92 of the elastic baffle 9 within the first slot 101. When the shield 7 is in the process of closing or retracting, and the elastic baffle 9 is not under pressure, the movable door 11 is in the closed position under the push of the second compression spring 93, blocking the connecting hole 102; when the shield 7 is fully open, and the elastic scraper 8 pushes the elastic baffle 9, the second sliding plate 92 drives the movable door 11 to move backward, opening the connecting hole 102. A collection box 12 is detachably installed within the second slot 103 for collecting dust, which is convenient for regular removal and cleaning.

[0040] The following description, in conjunction with the working process, further illustrates this embodiment.

[0041] Initially, the horn is not working, and the shield 7 is fully open. The first sliding plate 82 of the elastic scraper 8 rests against the second sliding plate 92 of the elastic baffle 9, and the two are in elastic contact, forming a sealed boundary. The movable door 11 is pushed open, and the connecting hole 102 is opened.

[0042] When the horn needs to be used, the controller sends a command to the drive motor 4, which rotates forward, causing the rotating rod 6 to rotate. The shield 7 then gradually retracts, exposing the annular mesh 3. During this process, the elastic scraper 8 moves away from the elastic baffle 9, which resets under the action of the second compression spring 93, causing the movable door 11 to close the connecting hole 102, sealing the previously collected dust inside the second slot 103 and the collection box 12. The rotating rod 6 continues to rotate until the shield 7 is fully retracted, and the horn can then operate normally.

[0043] When the horn is no longer in use and needs to be switched to dustproof mode, the drive motor 4 reverses, causing the rotating rod 6 to rotate in the opposite direction, and the shield 7 gradually opens. During this process, the elastic scraper 8 adheres closely to the surface of the annular mesh 3, scraping the dust deposited on the mesh forward. Due to the centrifugal effect caused by the rotation speed, the scraped dust gradually concentrates at the outermost end of the elastic scraper 8.

[0044] When the rotating rod 6 rotates to its near-fully open limit position, the elastic scraper 8 (the other end of the straight portion 822 of the first sliding plate 82) first contacts and begins to push against the elastic baffle 9 (the second sliding plate 92). At this time, the first compression spring 83 and the second compression spring 93 are compressed simultaneously, forming an elastic buffer to avoid rigid impact. As the pushing continues, the second sliding plate 92 drives the movable door 11 to move horizontally, reopening the connecting hole 102. The dust pushed to the limit position falls into the second slot 103 and the collection box 12 through the first slot 101 and the connecting hole 102 under the action of inertia and gravity.

[0045] At the moment of full opening, the other end of the straight portion 822 of the first sliding plate 82 impacts the second sliding plate 92 with a certain impact force. The first compression spring 83 and the second compression spring 93 connected to the two form an energy buffer and instantaneous release, causing the first sliding plate 82 to vibrate. This vibration can effectively shake off the residual dust adhering to the blade edge of the elastic scraper 8 and cause the dust in the cavity area to fall completely into the collection box 12 through the connecting hole 102, achieving the technical effect of self-cleaning upon contact.

[0046] Example 2 This embodiment is basically the same as Embodiment 1, except that the shield 7 is made of an acoustically transparent thin film material. When the film is in a tensile state, its resonant frequency is higher than the range of human hearing, so that even when the shield 7 is open for dust protection, the speaker can still play sound with minimal sound quality loss, meeting the low-quality broadcasting needs in specific scenarios.

[0047] Example 3 A dustproof new energy vehicle horn includes a horn body and a horn mesh structure as described in Embodiment 1 or Embodiment 2, mounted on the front side of the horn body. This horn can be used as an external low-speed warning horn, pedestrian warning horn, or speaker assembly for an in-vehicle entertainment audio system in a new energy vehicle.

[0048] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A speaker grille structure, comprising an outer mounting frame, a middle fixed frame, and a ring grille, wherein the ring grille is installed between the outer mounting frame and the middle fixed frame, characterized in that: It also includes a shielding mechanism, which includes a drive motor, a fixed rod, a rotating rod, and a shielding cover. The two ends of the fixed rod are vertically arranged at the lower part of the speaker grille and are fixedly connected to the outer mounting frame and the middle fixed frame, respectively. The two sides of the shielding cover are fixedly connected to the rotating rod and the fixed rod, respectively. The drive motor is installed in the middle fixed frame and can drive the rotating rod to rotate forward and backward around the center of the ring net, so that the rotating rod drives the shield to open or close. The rotating rod is equipped with an elastic scraper that rests against the annular mesh, the fixed rod is equipped with an elastic baffle that rests against the annular mesh, and the outer mounting frame is equipped with a collection trough below the fixed rod.

2. The speaker grille structure according to claim 1, characterized in that: The elastic scraper includes a first fixed plate and a first sliding plate. The first fixed plate is mounted on the output shaft of the drive motor. The first fixed plate is provided with a first sliding groove. The first sliding plate can slide along the first sliding groove and is connected to the first fixed plate by a first compression spring.

3. The speaker grille structure according to claim 1, characterized in that: The elastic baffle includes a second fixed plate and a second sliding plate. The second fixed plate is installed between the outer mounting frame and the middle fixed frame. The second fixed plate is provided with a second sliding groove. The second sliding plate can slide along the second sliding groove and is connected to the second fixed plate through a second compression spring.

4. The speaker grille structure according to claim 2, characterized in that: The first sliding plate is a T-shaped plate. The vertical part of the T-shaped plate slides along the first sliding groove. One side of the flat part of the T-shaped plate blocks the first sliding groove. When the other end of the flat part abuts against the elastic baffle, a cavity aligned with the collection groove is formed.

5. The speaker grille structure according to claim 4, characterized in that: When the shield is fully opened, the drive motor drives the other end of the straight section to strike the elastic baffle, causing the first sliding plate to vibrate and shake the internal dust into the collection tank.

6. The speaker grille structure according to claim 4, characterized in that: The collection trough includes a first slot, a connecting hole, and a second slot arranged from top to bottom. The first slot is connected to the second slot through the connecting hole. An elastic baffle is fixedly connected to a movable door inside the first slot. When the baffle is retracted, the movable door blocks the connecting hole.

7. The speaker grille structure according to claim 6, characterized in that: A collection box can be detachably installed inside the second slot.

8. A dustproof new energy vehicle horn, characterized in that, Includes the horn mesh structure as described in any one of claims 1-7.

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