A cleaning device for a vehicle lidar

Abstract

The utility model discloses a kind of cleaning device of automobile laser radar, is related to automobile laser radar technical field, including shell, laser radar is installed in shell interior, transparent plate is provided on shell, the top of shell is provided with shutter, drive slot is provided in the inside of shutter, drive assembly is provided in drive slot, lifting plate is installed on the output end of drive assembly, slot is opened in the inner end of lifting plate, scraping plate is installed on the inner end of lifting plate, scraping plate is inserted in slot by convex strip, scraping plate is attached with transparent plate. The utility model can effectively block sundries, rainwater and sunlight direct radiation falling from the shutter of shell top, when the surface of transparent plate is attached with pollutant, drive assembly drives lifting plate to descend, makes scraping plate close to the surface of transparent plate and executes cleaning action;After cleaning, drive assembly drives lifting plate to rise, makes scraping plate away from transparent plate, avoid unnecessary obstruction caused by scraping plate long-term contact with transparent plate under non-cleaning state.

Description

Technical Field

[0001] This utility model relates to the field of automotive lidar technology, specifically a cleaning device for automotive lidar. Background Technology

[0002] With the rapid development of intelligent driving technology, the importance of automotive LiDAR as a key environmental perception sensor is self-evident. LiDAR emits laser beams and receives reflected light to accurately measure information such as the distance, speed, and angle of target objects, providing vehicles with high-precision three-dimensional environmental data. This supports intelligent driving systems in making accurate decisions and ensuring driving safety.

[0003] However, during actual vehicle operation, LiDAR is usually exposed to the outside of the vehicle and is easily contaminated by various environmental factors. During daily driving, dust kicked up from the road will constantly adhere to the surface of the LiDAR; in rainy weather, raindrops will obstruct the LiDAR's vision and affect its perception of the surrounding environment. Dirt adhering to the surface of the LiDAR due to external factors will seriously interfere with its signal transmission and reception, thus affecting the normal use of the LiDAR. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a cleaning device for automotive lidar, which solves the problem mentioned in the background art that dirt adhering to the surface of lidar due to external factors will seriously interfere with the transmission and reception of its signals, thereby affecting the normal use of lidar.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cleaning device for an automotive lidar, comprising a housing, a lidar installed inside the housing, a transparent plate on the housing, a cover plate on the top of the housing, a drive assembly in the internal drive groove of the cover plate, a lifting plate installed on the output end of the drive assembly, a slot on the inner end of the lifting plate, a scraper installed on the inner end of the lifting plate, the scraper being inserted into the slot via a protrusion, and the scraper being in contact with the transparent plate.

[0006] Preferably, the length and width dimensions of the lifting plate are adapted to the drive groove.

[0007] Preferably, a symmetrical connecting arm is fixedly provided on the top of the lifting plate.

[0008] Preferably, the drive assembly includes a motor, the output end of which is connected to a bidirectional threaded rod. The bidirectional threaded rod is rotatably mounted in the drive groove and is parallel to the long side of the drive groove. Slide rods are arranged parallel to each other on both sides of the bidirectional threaded rod and are fixed in the drive groove.

[0009] Preferably, two sets of mutually symmetrical movable frames are slidably installed on both ends of the slide rod. The two sets of movable frames are respectively spirally installed on the threads at both ends of the bidirectional threaded rod. A rotating arm is fixed at the bottom of the movable frame. The rotating arm is hinged to the connecting rod. The connecting rod is rotatably installed on the connecting arm.

[0010] Preferably, the connecting rods hinged at the bottom of the two sets of movable frames are arranged symmetrically to each other.

[0011] This invention provides a cleaning device for automotive lidar. It has the following beneficial effects:

[0012] (1) The present invention can effectively block debris, rain and direct sunlight from falling from above through the cover plate on the top of the shell. When pollutants are attached to the surface of the transparent plate, the drive component drives the lifting plate to descend, so that the scraper is close to the surface of the transparent plate to perform the cleaning action. After cleaning, the drive component drives the lifting plate to rise, so that the scraper is away from the transparent plate, avoiding unnecessary obstruction caused by the scraper being in contact with the transparent plate for a long time in the non-cleaning state.

[0013] (2) The length and width of the lifting plate of this utility model are compatible with the drive slot. When idle, the lifting plate can cause the drive slot to close, preventing dust and other factors from entering the drive slot. At the same time, when the moving frame moves along the slide bar, the rotating arm drives the connecting rod to push the connecting arm to move. Through the symmetrically distributed connecting rod transmission, the horizontal movement of the moving frame is converted into the vertical lifting movement of the lifting plate. The symmetrical connecting rod design makes the force at both ends of the lifting plate balanced, making the lifting process more stable and preventing the lifting plate from tilting. Attached Figure Description

[0014] Figure 1 This is a diagram showing the overall structure of the present utility model;

[0015] Figure 2 This utility model Figure 1 Structural diagram of the central shield;

[0016] Figure 3 This utility model Figure 2 A structural diagram of the driving component;

[0017] Figure 4 This utility model Figure 3 Structural diagram of the lifting platform.

[0018] In the diagram, 1 is the outer shell; 2 is the transparent plate; 3 is the cover plate; 31 is the drive groove; 4 is the lifting plate; 41 is the connecting arm; 42 is the slot; 5 is the drive assembly; 51 is the motor; 52 is the bidirectional threaded rod; 53 is the slide rod; 54 is the moving frame; 55 is the rotating arm; 56 is the connecting rod; 6 is the scraper; and 61 is the raised strip. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0020] Please see Figures 1-4 This utility model provides a cleaning device for automotive lidar, including a housing 1, a lidar installed inside the housing 1, a transparent plate 2 on the housing 1, a cover plate 3 on the top of the housing 1, a drive assembly 5 in the drive groove 31 inside the cover plate 3, a lifting plate 4 installed on the output end of the drive assembly 5, a slot 42 opened on the inner end of the lifting plate 4, a scraper 6 installed on the inner end of the lifting plate 4, the scraper 6 is inserted into the slot 42 through a protrusion 61, and the scraper 6 is in contact with the transparent plate 2;

[0021] The length and width dimensions of the lifting plate 4 are adapted to the drive slot 31;

[0022] A symmetrical connecting arm 41 is fixedly installed on the top of the lifting plate 4;

[0023] The drive assembly 5 includes a motor 51, the output end of which is connected to a bidirectional threaded rod 52. The bidirectional threaded rod 52 is rotatably mounted in the drive groove 31 and is parallel to the long side of the drive groove 31. Slide rods 53 are arranged parallel to each other on both sides of the bidirectional threaded rod 52 and are fixed in the drive groove 31.

[0024] Two sets of symmetrical movable frames 54 are slidably installed on both ends of the slide rod 53. The two sets of movable frames 54 are respectively screwed on the threads at both ends of the bidirectional threaded rod 52. The bottom of the movable frame 54 is fixed with a rotating arm 55. The rotating arm 55 is hinged to the connecting rod 56. The connecting rod 56 is rotatably installed on the connecting arm 41.

[0025] The connecting rods 56 hinged at the bottom of the two sets of movable frames 54 are arranged symmetrically to each other.

[0026] Specifically, the cover plate 3 on the top of the outer shell 1 directly covers the transparent plate 2. During vehicle operation, the cover plate 3 reduces the probability of rainwater directly impacting the surface of the transparent plate 2 through its own shielding range, and reduces the amount of raindrops adhering to the transparent plate 2. At the same time, the cover plate 3 can block some of the dust and debris falling from the air, reducing the accumulation of pollutants on the surface of the transparent plate 2 from the source, and providing continuous protection for the transparent plate 2.

[0027] When contaminants adhere to the surface of the transparent plate 2 and require cleaning, the motor 51 in the drive assembly 5 starts, driving the bidirectional threaded rod 52 to rotate. Since the two sets of moving frames 54 are respectively spirally installed on the threads at both ends of the bidirectional threaded rod 52, the rotation of the bidirectional threaded rod 52 will cause the two sets of moving frames 54 to move closer to each other along the slide rod 53. The rotating arm 55 at the bottom of the moving frame 54 moves with the moving frame 54, thereby pushing the connecting rod 56 to rotate. The connecting rod 56 drives the connecting arm 41 to move downward, causing the lifting plate 4 to descend as a whole. The scraper 6 installed at the inner end of the lifting plate 4 then comes into contact with the surface of the transparent plate 2. The movement of the lifting plate 4 realizes the cleaning action of the scraper 6 on the transparent plate 2.

[0028] After cleaning, the motor 51 rotates in the opposite direction, and the bidirectional threaded rod 52 drives the two sets of moving frames 54 to move away from each other along the slide rod 53. The rotating arm 55 pulls the connecting rod 56, and the connecting rod 56 drives the connecting arm 41 to move upward. The lifting plate 4 rises, and the scraper 6 moves away from the transparent plate 2. This avoids the scraper 6 from being in contact with the transparent plate 2 for a long time in the non-cleaning state, reduces the obstruction of the laser signal by the scraper 6, and ensures that the laser radar can normally perceive the environment through the transparent plate 2.

[0029] The length and width of the lifting plate 4 are adapted to the drive groove 31. When the device is idle, the lifting plate 4 rises onto the drive groove 31, and its edge fits against the inner wall of the drive groove 31 to form a closed structure for the drive groove 31. The closed state can effectively prevent external dust, rainwater and other pollutants from entering the drive groove 31, and prevent the motor 51, bidirectional threaded rod 52, slide rod 53 and other components in the drive assembly 5 from being corroded by pollutants, thus ensuring the normal operation of the drive assembly 5 and reducing the probability of equipment failure.

[0030] The scraper 6 is made of silicone, which has excellent flexibility and can fit tightly to the surface of the transparent plate 2 through its own slight deformation, ensuring that no gaps or dead corners are left during cleaning. At the same time, the surface of this material is smooth and delicate, with a low coefficient of friction when in contact with the transparent plate 2. Long-term use will not easily scratch or wear the optical coating of the transparent plate 2. When the scraper 6 moves along the surface of the transparent plate 2 under the action of the lifting plate 4, it can effectively remove dust, water film formed by raindrops, and slight sticky stains adhering to the transparent plate 2, ensuring that the surface of the transparent plate 2 remains clean and does not affect the penetration and reception of the lidar signal.

[0031] Working principle: Under normal driving conditions, the cover plate 3 on the top of the outer shell 1 directly covers the transparent plate 2, blocking falling debris, rain and direct sunlight through its own structure. At this time, the device is in an idle state. The edge of the lifting plate 4 fits against the inner wall of the drive groove 31 to form a closed structure, protecting the motor 51, bidirectional threaded rod 52, slide rod 53 and other components in the drive assembly 5 from being affected.

[0032] When dust, raindrops forming a water film, or slight sticky stains adhere to the surface of the transparent plate 2, requiring cleaning, the motor 51 in the drive assembly 5 starts working, driving the bidirectional threaded rod 52 to rotate within the drive groove 31. The rotation of the bidirectional threaded rod 52 causes the two sets of moving frames 54 to move closer together along the slide rod 53. The rotating arm 55 at the bottom of the moving frame 54 moves synchronously with the moving frame 54, thereby pushing the connecting rod 56 to rotate. The connecting rod 56 drives the symmetrical connecting arm 41 at the top of the lifting plate 4 to move downward, causing the lifting plate 4 to descend as a whole. The scraper 6 installed at the inner end of the lifting plate 4 slides along the surface of the transparent plate 2 under the drive of the lifting plate 4, effectively removing contaminants adhering to the surface.

[0033] After cleaning, motor 51 rotates in the reverse direction, and bidirectional threaded rod 52 drives two sets of moving frames 54 to move away from each other along slide rod 53. Rotating arm 55 at the bottom of moving frame 54 pulls connecting rod 56, which in turn drives connecting arm 41 upwards. Lifting plate 4 rises accordingly, and scraper 6 moves away from transparent plate 2, preventing the scraper 6 from blocking the laser signal in the non-cleaning state and ensuring the lidar can normally perceive the environment through transparent plate 2. Simultaneously, lifting plate 4 rises again to a position where it fits against drive groove 31, re-forming a closed structure, and the device returns to an idle state, awaiting the next cleaning instruction.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cleaning device for an automotive lidar, comprising a housing (1), wherein a lidar is installed inside the housing (1), and a transparent plate (2) is disposed on the housing (1), characterized in that: The top of the outer shell (1) is provided with a cover plate (3), and a drive assembly (5) is provided in the internal drive groove (31) of the cover plate (3). A lifting plate (4) is installed on the output end of the drive assembly (5). A slot (42) is opened on the inner end of the lifting plate (4). A scraper (6) is installed on the inner end of the lifting plate (4). The scraper (6) is inserted into the slot (42) through a protrusion (61). The scraper (6) is in contact with the transparent plate (2).

2. The cleaning device for automotive lidar according to claim 1, characterized in that: The length and width dimensions of the lifting plate (4) are adapted to the drive groove (31).

3. The cleaning device for automotive lidar according to claim 1, characterized in that: The top of the lifting plate (4) is fixedly provided with a symmetrical connecting arm (41).

4. The cleaning device for automotive lidar according to claim 3, characterized in that: The drive assembly (5) includes a motor (51), the output end of which is connected to a bidirectional threaded rod (52). The bidirectional threaded rod (52) is rotatably mounted in the drive groove (31) and parallel to the long side of the drive groove (31). Slide rods (53) are arranged parallel to each other on both sides of the bidirectional threaded rod (52), and the slide rods (53) are fixed in the drive groove (31).

5. The cleaning device for automotive lidar according to claim 4, characterized in that: Two sets of mutually symmetrical movable frames (54) are slidably installed on both ends of the slide rod (53). The two sets of movable frames (54) are respectively spirally installed on the threads at both ends of the bidirectional threaded rod (52). The bottom of the movable frame (54) is fixed with a rotating arm (55). The rotating arm (55) is hinged to the connecting rod (56). The connecting rod (56) is rotatably installed on the connecting arm (41).

6. The cleaning device for automotive lidar according to claim 5, characterized in that: The connecting rods (56) hinged at the bottom of the two sets of movable frames (54) are arranged symmetrically to each other.

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