A dustproof mechanism for car air vents

Abstract

This utility model relates to the field of automotive air vents and discloses an automotive air vent dustproof mechanism, including a dustproof frame and a dustproof net. The dustproof frame is snapped into the air vent of the car, and the dustproof net is snapped into the opening of the dustproof frame. Multiple sealing plates are disposed in the opening of the dustproof frame, and the multiple sealing plates are parallel and corresponding to each other and snapped into the dustproof frame. The dustproof frame is a ring-shaped hollow structure. The sealing plate opening and closing structure disposed in the dustproof frame includes an active opening and closing component and a transmission opening and closing component. The dustproof net is fixed to the dustproof net and the dustproof frame. The dustproof net fixing structure is located between the dustproof net and the dustproof frame. A rod-shaped push rod motor drives a long strip rack to mesh with a gear. With the help of a sliding strip guide, the multiple sealing plates open and close synchronously and automatically. The dustproof net is quickly disassembled and assembled by means of the elastic snapping of the spring in the groove with the spherical protrusion and the hemispherical groove.

Description

Technical Field

[0001] This utility model relates to the field of automotive air vents, specifically a dustproof mechanism for automotive air vents. Background Technology

[0002] As the connection channel between the air conditioning system and the cabin environment, the cleanliness of the car's air vents directly affects the air conditioning quality and the driving experience. However, when the vehicle is parked or has not been used for a long time, dust, lint, debris and other impurities from the outside can easily enter the air conditioning duct through the vents. This can not only accumulate in the duct to form dirt and breed bacteria and mold, but may also clog the evaporator or filter, leading to problems such as reduced air conditioning cooling and heating efficiency and unpleasant odors.

[0003] Existing dustproof mechanisms with shielding structures achieve dust sealing through manually openable baffles. However, these baffles are mostly single-piece designs, requiring manual operation during opening and closing, and the uneven force can easily cause them to jam against the air outlet frame. In addition, the dustproof net and frame of these devices are mostly integrated designs. When the dustproof net accumulates dust and needs cleaning or replacement, the entire device must be removed, which is cumbersome. Repeated disassembly can increase the gap between the device and the air outlet, reducing the dustproof sealing performance. Therefore, we propose a dustproof mechanism for automotive air outlets. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a dustproof mechanism for automotive air vents, solving the aforementioned problems.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a dustproof mechanism for an automobile air vent, comprising a dustproof frame and a dustproof net, wherein the dustproof frame is snapped into the air vent of the automobile, and the dustproof net is snapped into the opening of the dustproof frame; Multiple sealing plates are installed inside the opening of the dustproof frame, with the multiple sealing plates being parallel to each other and snapped into the dustproof frame; The dustproof frame is a ring-shaped hollow structure, and a sealing plate opening and closing structure is set inside the dustproof frame, which corresponds to the sealing plate. The sealing plate opening and closing structure includes an active opening and closing component and a transmission opening and closing component, which are respectively located at both ends of the sealing plate. The dustproof net fastening structure is installed on the dustproof net and between the dustproof net and the dustproof frame.

[0006] Preferably, both ends of the sealing plate are fixedly connected to a rotating shaft, and multiple sealing plates distributed equidistantly along a straight line are snapped into the opening of the dustproof frame. The sealing plate is on one side of the dustproof net, and the rotating shaft of the sealing plate passes through the dustproof frame and is rotatably connected to the dustproof frame. The end of the rotating shaft away from the sealing plate is inside the dustproof frame.

[0007] Preferably, a second slide bar is fixedly connected to one side of the dustproof frame opposite to one of the rotating shafts. The second slide bar is located on one side of the rotating shaft and on one side of the dustproof frame.

[0008] Preferably, the active opening and closing assembly includes an active gear, a rack and pinion, and a push rod motor. The active gear is fixedly connected to the rotating shaft corresponding to the rack and pinion. A groove is provided on one side of the rack and pinion, which is slidably engaged with the rack and pinion. The tooth surface of the rack and pinion meshes with the active gear. The push rod motor is connected to the side of the dustproof frame that is connected to the rack and pinion. One side of the main body of the push rod motor is fixedly connected to the dustproof frame. One end of the push rod of the push rod motor is fixedly connected to one end of the rack and pinion.

[0009] Preferably, a first slide is fixedly connected inside the dustproof frame on the other side opposite to the second slide. The first slide corresponds to the pivot of the sealing plate away from the second slide, and the first slide is on one side of the pivot.

[0010] Preferably, the transmission opening and closing assembly includes a driven gear and a rack. A driven gear is fixedly connected to the rotating shaft on one side of the slide bar. A sliding groove is provided on one side of the rack, which is slidably engaged with the slide bar. Each driven gear is meshed with the tooth surface of the rack.

[0011] Preferably, the dustproof net fastening structure includes a spring and a spherical protrusion. The side of the dustproof net is provided with multiple telescopic grooves that are equidistantly distributed along a straight line. A spring is fixedly connected to the opposite side of the opening of each telescopic groove, and a spherical protrusion is fixedly connected to the other end of each spring. The spherical protrusion slides within the telescopic groove.

[0012] Preferably, the dustproof frame has hemispherical grooves on the sides that fit against the spherical protrusions, and the hemispherical grooves engage with the spherical protrusions.

[0013] Compared with the prior art, this utility model provides a dustproof mechanism for automobile air vents, which has the following beneficial effects: This automotive air vent dustproof mechanism uses a rod-shaped push rod motor to drive a long rack and gear to mesh with a sliding guide to achieve synchronous automatic opening and closing of multiple sealing plates. The dustproof net is quickly installed and removed by the elastic engagement of the spring in the groove with the spherical protrusion and hemispherical groove. This not only ensures the tightness of the opening seal and the automation of operation, but also simplifies the dustproof net maintenance process, effectively improving the reliability of dustproofing and the convenience of use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is a cross-sectional schematic diagram of the opening and closing structure of the sealing plate of this utility model; Figure 4 This is a cross-sectional schematic diagram of the dustproof mesh fastening structure of this utility model; Figure 5 for Figure 4 A magnified view of part A in the diagram.

[0015] In the diagram: 1. Dustproof frame; 2. Dustproof net; 3. Sealing plate; 4. Rack 1; 5. Slide 1; 6. Rack 2; 7. Push rod motor; 8. Rotating shaft; 9. Slide 2; 10. Driven gear; 11. Drive gear; 12. Spherical protrusion; 13. Hemispherical groove; 14. Telescopic groove; 15. Spring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-5 A dustproof mechanism for an automobile air vent includes a dustproof frame 1 and a dustproof net 2. The dustproof frame 1 is snapped into the air vent of the automobile, and the dustproof net 2 is snapped into the opening of the dustproof frame 1. Multiple sealing plates 3 are installed inside the opening of the dustproof frame 1. The multiple sealing plates 3 are parallel and corresponding to each other and are snapped into the dustproof frame 1. The dustproof frame 1 is a ring-shaped hollow structure, and the sealing plate opening and closing structure is set inside the dustproof frame 1. The sealing plate opening and closing structure corresponds to the sealing plate 3. The sealing plate opening and closing structure includes an active opening and closing component and a transmission opening and closing component, which are located at both ends of the sealing plate 3, respectively. The dustproof net fastening structure is installed on the dustproof net 2, and the dustproof net fastening structure is located between the dustproof net 2 and the dustproof frame 1.

[0018] Furthermore, both ends of the sealing plate 3 are fixedly connected to a rotating shaft 8. Multiple sealing plates 3, which are equidistantly distributed along a straight line, are snapped into the opening of the dustproof frame 1. The sealing plate 3 is on one side of the dustproof net 2. The rotating shaft 8 of the sealing plate 3 passes through the dustproof frame 1 and is rotatably connected to the dustproof frame 1. The end of the rotating shaft 8 away from the sealing plate 3 is inside the dustproof frame 1. The rotating shaft 8 is used to connect the sealing plate 3 and the dustproof frame 1. The sealing plate 3 rotates inside the dustproof frame 1.

[0019] Furthermore, a second slide bar 9 is fixedly connected to one side of the dustproof frame 1 opposite to one of the rotating shafts 8. The second slide bar 9 is on one side of the rotating shaft 8 and on one side inside the dustproof frame 1. The second slide bar 9 is used to install the active opening and closing component.

[0020] Furthermore, the active opening and closing assembly includes an active gear 11, a rack 6, and a push rod motor 7. The active gear 11 is fixedly connected to the rotating shaft 8 corresponding to the slide 9. A groove is provided on one side of the rack 6, which slides and engages with the slide 9. The tooth surface of the rack 6 meshes with the active gear 11. The push rod motor 7 is connected to the side of the dustproof frame 1 that is connected to the slide 9. One side of the main body of the push rod motor 7 is fixedly connected to the dustproof frame 1. One end of the push rod of the push rod motor 7 is fixedly connected to one end of the rack 6. The active gear 11 and the rack 6 are used to rotate the rotating shaft 8. The rotation of the rotating shaft 8 causes the sealing plate 3 to rotate. The rotation of the sealing plate 3 is used to seal and open the opening of the dustproof frame 1. The push rod motor 7 is used to drive the rack 6 to slide, thereby driving the active gear 11 to rotate.

[0021] Furthermore, a slide bar 5 is fixedly connected inside the dustproof frame 1 on the other side opposite to the slide bar 2 9. The slide bar 5 corresponds to the rotating shaft 8 of the sealing plate 3 away from the end of the slide bar 2 9. The slide bar 5 is on one side of the rotating shaft 8 and is used to install the transmission opening and closing assembly.

[0022] Furthermore, the transmission opening and closing assembly includes a driven gear 10 and a rack 4. A driven gear 10 is fixedly connected to the rotating shaft 8 on one side of the slide bar 5. A sliding groove is provided on one side of the rack 4, which is slidably engaged with the slide bar 5. Each driven gear 10 is meshed with the tooth surface of the rack 4. The driven gear 10 and the rack 4 are used to drive the sealing plates 3. The driving gear 11 controls the rotation of one sealing plate 3, and drives the remaining sealing plates 3 to rotate synchronously through the driven gear 10 and the rack 4 on the other side of the dustproof frame 1.

[0023] Furthermore, the dustproof net fastening structure includes a spring 15 and a spherical protrusion 12. Multiple telescopic grooves 14 are provided on the sides of the dustproof net 2, which are distributed equidistantly along a straight line. A spring 15 is fixedly connected to the opposite side of the opening of the telescopic groove 14. A spherical protrusion 12 is fixedly connected to the other end of the spring 15. The spherical protrusion 12 slides in the telescopic groove 14. The telescopic groove 14 is used to install the spring 15 and the spherical protrusion 12. The elastic force of the spring 15 pushes the spherical protrusion 12 out of the telescopic groove 14.

[0024] Furthermore, hemispherical grooves 13 are provided on the sides of the dustproof frame 1 that are in contact with the spherical protrusion 12. The hemispherical grooves 13 are engaged with the spherical protrusion 12, thereby connecting the dustproof net 2 and the dustproof frame 1.

[0025] Structural Description: Dustproof frame 1: It has a ring-shaped hollow structure that is compatible with the car's air vent. The inner side is equipped with a matching structure for installing the sealing plate 3, the sliding strip, and the hemispherical groove 13. As the main frame of the mechanism, it is snapped into the air vent, providing a mounting carrier for each component, and the sealing plate 3 is used to achieve the sealing and opening of the opening. Dustproof net 2: It is a thin mesh structure, the size of which matches the opening of the dustproof frame 1. It has a telescopic groove 14 on the side. As the core component of the filter, it filters dust and debris in the air conditioning air or the outside air and prevents particulate matter from entering the air conditioning duct. Sealing plate 3: consists of multiple parallel thin plates with connecting holes at both ends for connecting to the rotating shaft 8. By rotating around the rotating shaft 8, the opening of the dustproof frame 1 can be sealed and opened. When closed, it prevents debris from entering, and when open, it ensures the air circulation of the air conditioner. Rack 4: It is a long strip structure with a toothed surface on one side that meshes with the driven gear 10, and a sliding groove on the other side that matches the slide bar 5. It slides on the slide bar 5 and drives all the sealing plates 3 by meshing with the driven gear 10, so as to realize the synchronous rotation of multiple sealing plates 3. Slide bar 5: It is a long strip-shaped protrusion structure that matches the groove of rack 4. It serves as the sliding track of rack 4, restricts the movement direction of rack 4, provides stable support for the transmission opening and closing assembly, and ensures transmission stability. Rack 2 6: It is a long strip structure with a toothed surface on one side that meshes with the drive gear 11, and a groove on the other side that matches the slide bar 2 9. It slides on the slide bar 2 9 and drives the drive gear 11 to rotate by meshing with it, providing initial power for the opening and closing of the sealing plate 3. Push rod motor 7: It is a rod-shaped drive component, including a telescopic push rod and a fixed body. One end of the push rod is fixedly connected to rack 2 6. It receives commands from the control module and drives rack 2 6 to slide through the extension and retraction of the push rod, thereby realizing the automatic opening and closing control of sealing plate 3. Rotating shaft 8: It is a short rod-shaped structure with the sealing plate 3 and the gear at both ends respectively. It passes through the dustproof frame 1 and is rotatably connected to it. As a force transmission component, it transmits the rotational force of the gear to the sealing plate 3, causing the sealing plate 3 to rotate. Slide bar 2 9: It is a long strip-shaped protrusion structure that matches the groove of rack 2 6. It serves as the sliding track of rack 2 6, restricts the movement direction of rack 2 6, provides support for the active opening and closing assembly, and ensures stable meshing between rack 2 6 and drive gear 11. Driven gear 10: It is a circular gear structure, fixed on the rotating shaft 8 of the sealing plate 3 away from the end of the driving gear 11, and meshes with the tooth surface of rack 4, converting the sliding of rack 4 into the rotation of the rotating shaft 8, which drives the corresponding sealing plate 3 to rotate. Drive gear 11: It is a circular gear structure, fixed to one end of one of the rotating shafts 8 near the slide bar 9, meshing with the tooth surface of rack 6, receiving the power transmitted by rack 6 and driving the rotating shaft 8 to rotate, thus initiating the opening and closing action of the sealing plate 3; Spherical protrusion 12: It is a hemispherical protrusion structure with a certain elasticity. It connects to the end of the spring 15 away from the inner wall of the telescopic groove 14. Under the action of the spring 15, it pops out of the telescopic groove 14 and engages with the hemispherical groove 13 to fix the dustproof net 2 and the dustproof frame 1. Hemispherical groove 13: It is a hemispherical recessed structure, which is opened on the inner wall where the dustproof frame 1 and the spherical protrusion 12 fit together. It is adapted to the spherical protrusion 12 and forms a detachable fixed structure between the dustproof net 2 and the dustproof frame 1 by snapping the spherical protrusion 12. Telescopic groove 14: A groove structure opened on the side of the dustproof net 2, the size of which matches the spring 15 and the spherical protrusion 12. As an installation carrier, it provides installation space for the spring 15 and the spherical protrusion 12, allowing the spherical protrusion 12 to slide telescopically within the groove. Spring 15: A spiral elastic component installed between the inner wall opposite the opening of the telescopic groove 14 and the spherical protrusion 12, providing elastic force to push the spherical protrusion 12 out of the telescopic groove 14 to achieve locking, and contracting under pressure to retract the protrusion to release the fixation.

[0026] Working principle: During assembly, the dustproof frame 1 is snapped onto the car's air vent via an adapter structure. The dustproof net 2 is installed using the dustproof net securing structure. Pressing the spherical protrusion 12 on the side of the dustproof net 2 compresses the spring 15 in the telescopic groove 14 and retracts it into the groove. After pushing the dustproof net 2 into the opening of the dustproof frame 1, the spring 15 pushes the spherical protrusion 12 out, precisely engaging with the hemispherical groove 13 on the inner wall of the dustproof frame 1, achieving rapid fixation of the dustproof net 2 and the dustproof frame 1. Simultaneously, the device's built-in control module initiates a self-check, confirming the initial positions of each component—the sealing plate 3 is in a closed state, the push rod motor 7 pushes the rod back, and racks 4 and 6 are in their initial positions. When the vehicle's air conditioning is turned on... When the control module receives a trigger signal from the air conditioning system, it sends a positive drive command to the push rod motor 7. The push rod of the push rod motor 7 extends, causing the rack 2 6 fixed to it to slide along the groove of the slide bar 2 9. The teeth of the rack 2 6 mesh with and drive the drive gear 11 to rotate. The drive gear 11 drives the connected rotating shaft 8 to rotate synchronously, thereby causing the sealing plate 3 corresponding to the rotating shaft 8 to start rotating and opening. At the same time, the rotating shaft 8 at the other end of the sealing plate 3 drives the driven gear 10 to rotate. The driven gear 10 meshes with and drives the rack 4 to slide along the slide groove of the slide bar 5. The sliding rack 4 synchronously meshes with the driven gears 10 on all other rotating shafts 8, so that all rotating shafts 8 rotate synchronously, ultimately realizing the flatness of multiple sealing plates 3. Simultaneously, the air conditioner opens fully, ensuring that the air conditioning air passes smoothly through the dustproof net 2 and enters the cabin. The control module monitors the stroke of the push rod motor 7 in real time and sends a stop command after reaching the preset position, completing the opening action. When the air conditioner is turned off or the vehicle is turned off, the control module receives a status signal and sends a reverse drive command to the push rod motor 7. The push rod motor 7 retracts, pulling the rack 2 6 to slide in the opposite direction along the slide bar 2 9. The rack 2 6 engages and drives the drive gear 11 to rotate in the opposite direction, driving the corresponding sealing plate 3 to rotate in the opposite direction through the rotating shaft 8. Similarly, the driven gear 10 at the other end of the rotating shaft 8 drives the rack 1 4 to slide in the opposite direction. The rack 1 4 engages all the driven gears 10 and rotates in the opposite direction, causing all the sealing plates 3 to rotate in the opposite direction. The components rotate synchronously in opposite directions until multiple sealing plates 3 fit together, completely sealing the opening of the dustproof frame 1 and preventing dust and other debris from entering the air duct. After the control module confirms that the sealing plates 3 are closed in place through the stroke sensor, it controls the push rod motor 7 to shut down. When the dustproof net 2 needs to be cleaned or replaced, the dustproof net 2 is manually pulled. The spherical protrusion 12 and the hemispherical groove 13 are subjected to force, causing the compression spring 15 to retract to the telescopic groove 14, releasing the engagement with the hemispherical groove 13. The dustproof net 2 can then be removed from the dustproof frame 1. After maintenance, the initial assembly steps are repeated. The elasticity of the spring 15 enables the spherical protrusion 12 and the hemispherical groove 13 to automatically lock together without the need for overall disassembly, ensuring the sealing performance between the dustproof frame 1 and the air outlet.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dustproof mechanism for an automobile air vent, characterized in that, It includes a dustproof frame (1) and a dustproof net (2). The dustproof frame (1) is snapped into the air vent of the car, and the dustproof net (2) is snapped into the opening of the dustproof frame (1). Multiple sealing plates (3) are set inside the opening of the dustproof frame (1), and the multiple sealing plates (3) are parallel and corresponding and snapped into the dustproof frame (1); The dustproof frame (1) is a ring-shaped hollow structure, and the sealing plate opening and closing structure is set inside the dustproof frame (1), which corresponds to the sealing plate (3); The sealing plate opening and closing structure includes an active opening and closing component and a transmission opening and closing component, which are respectively located at both ends of the sealing plate (3); The dustproof net fastening structure is set on the dustproof net (2) between the dustproof net (2) and the dustproof frame (1).

2. The dustproof mechanism for an automobile air vent according to claim 1, characterized in that, Both ends of the sealing plate (3) are fixedly connected to a rotating shaft (8). Multiple sealing plates (3) distributed equidistantly along a straight line are snapped into the opening of the dustproof frame (1). The sealing plate (3) is on one side of the dustproof net (2). The rotating shaft (8) of the sealing plate (3) passes through the dustproof frame (1) and is rotatably connected to the dustproof frame (1). The end of the rotating shaft (8) away from the sealing plate (3) is inside the dustproof frame (1).

3. The dustproof mechanism for an automobile air vent according to claim 2, characterized in that, A second slide bar (9) is fixedly connected to one side of the dustproof frame (1) opposite to one of the rotating shafts (8). The second slide bar (9) is on one side of the rotating shaft (8) and on one side inside the dustproof frame (1).

4. The dustproof mechanism for an automobile air vent according to claim 3, characterized in that, The active opening and closing assembly includes an active gear (11), a rack (6) and a push rod motor (7). The active gear (11) is fixedly connected to the rotating shaft (8) corresponding to the slide (9). A groove is provided on one side of the rack (6), which slides and engages with the slide (9). The tooth surface of the rack (6) meshes with the active gear (11). The side of the dustproof frame (1) connected to the slide (9) is connected to the push rod motor (7). One side of the main body of the push rod motor (7) is fixedly connected to the dustproof frame (1), and one end of the push rod of the push rod motor (7) is fixedly connected to one end of the rack (6).

5. A dustproof mechanism for an automotive air vent according to claim 2, characterized in that, Inside the dustproof frame (1), on the other side opposite to the slide bar two (9), slide bar one (5) is fixedly connected. Slide bar one (5) corresponds to the rotating shaft (8) of the sealing plate (3) away from the end of slide bar two (9). Slide bar one (5) is on one side of the rotating shaft (8).

6. A dustproof mechanism for an automotive air vent according to claim 5, characterized in that, The transmission opening and closing assembly includes a driven gear (10) and a rack (4). A driven gear (10) is fixedly connected to a rotating shaft (8) on one side of the slide bar (5). A sliding groove is provided on one side of the rack (4), which is slidably engaged with the slide bar (5). Each driven gear (10) is meshed with the tooth surface of the rack (4).

7. A dustproof mechanism for an automotive air vent according to claim 1, characterized in that, The dustproof net fastening structure includes a spring (15) and a spherical protrusion (12). The side of the dustproof net (2) is provided with multiple telescopic grooves (14) distributed equidistantly along a straight line. The opposite side of the opening of the telescopic groove (14) is fixedly connected to a spring (15). The other end of the spring (15) is fixedly connected to a spherical protrusion (12). The spherical protrusion (12) slides in the telescopic groove (14).

8. A dustproof mechanism for an automobile air vent according to claim 7, characterized in that, The dustproof frame (1) and the spherical protrusion (12) are both provided with hemispherical grooves (13), and the hemispherical grooves (13) are engaged with the spherical protrusion (12).

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