A laser radar aerodynamic nozzle support

Abstract

The utility model provides a kind of laser radar pneumatic nozzle support, including support body, support body includes the lateral extension of cross and the installation portion of the downward extension of cross two ends;Installation portion lower end is equipped with mounting hole, the rear side of cross is equipped with air inlet pedestal, air inlet pedestal is threadedly installed with quick connector, the front side bottom end of cross is equipped with multiple nozzles.The pneumatic nozzle support cooperates with laser radar body, ensures the stable connection and sealing cooperation between support body and laser radar body, realizes the effective coverage of airflow to laser radar window part, so as to effectively realize the cleaning of laser radar.

Description

Technical Field

[0001] This utility model relates to the field of automotive radar technology, and in particular to a laser radar pneumatic nozzle bracket. Background Technology

[0002] LiDAR, as a crucial sensor in vehicle environmental perception systems, generates high-precision 3D point cloud data by emitting and receiving laser pulses, enabling the detection and localization of the surrounding environment. It has become a core component of advanced driver assistance and autonomous driving systems. Currently, LiDAR in vehicles is typically installed on the front roof, front bumper or grille, or in locations such as the headlights or fenders. While the roof location offers advantages such as a wide field of vision and minimal obstruction, it can be somewhat obtrusive and requires more thorough cleaning and maintenance. Installation on the bumper or grille provides greater concealment but is more susceptible to contamination from mud, water, and dust, placing higher demands on the cleanliness of the viewing area.

[0003] To address the issue of lidar being easily contaminated during use, existing technologies have proposed various cleaning structures. For example, Chinese Patent Publication No. CN219565029U, entitled "Pre-embedded LiDAR Nozzle and Automobile," discloses a method of pre-embedding a nozzle in the roof of a vehicle. In this method, the nozzle is located in front of and faces the lidar housing; the nozzle body has a water storage chamber connected to a water inlet pipe, and the upper part is connected to a guide plate through multiple mounting holes. The guide plate has multi-stage flow channels inside to change the spray pattern, thereby spraying water towards the lidar housing for cleaning. However, some limitations remain. The nozzle relies on the pre-embedded structure in the roof for installation, its position is fixed and dependent on the vehicle body layout, making it difficult to flexibly adjust according to the specific shape and position of the lidar window; at the same time, this solution uses a liquid spray method, requiring the cooperation of a liquid storage and pumping system, which is inconvenient in low-temperature environments or for long-term maintenance. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a laser radar pneumatic nozzle bracket to solve the problems in the prior art.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a laser radar pneumatic nozzle bracket, including a bracket body, the bracket body including a horizontally extending part and mounting parts extending downward at both ends of the horizontal part; the lower end of the mounting part is provided with a mounting hole, the rear side of the horizontal part is provided with an air inlet base, a quick connector is threaded on the air inlet base, and the bottom front end of the horizontal part is provided with multiple nozzles.

[0006] Furthermore, the front side of the horizontal section is provided with a forward-extending overhang section, and the nozzles are evenly spaced along the lower edge of the overhang section.

[0007] Furthermore, a boss is integrally provided on the rear center of the horizontal part, and the air intake base is provided on the boss and fixed by screws and nuts pre-embedded in the boss; a first air chamber is provided in the boss, the first air chamber is connected to the air intake base, a second air chamber is provided in the horizontal part, the first air chamber is connected to the second air chamber, and the second air chamber is connected to the nozzle.

[0008] Furthermore, the horizontal section is mounted on the lidar body via a sealing gasket, and the nozzle of the overhanging section is located above the viewing window of the lidar body.

[0009] Optionally, the nozzle is a frustum or a cone structure.

[0010] Furthermore, an annular sealing ring is provided at the connection between the air intake base and the first air chamber of the boss portion.

[0011] Furthermore, the sealing gasket includes a first sealing gasket disposed on the boss portion and a second sealing gasket on the rear side of the overhang section.

[0012] Furthermore, the bottom surfaces of the horizontal portion extend downwards integrally to form a mating structure, which is ear-shaped.

[0013] Furthermore, the sealing gasket is made of silicone rubber.

[0014] The beneficial effects of this utility model are:

[0015] (1) By adopting a pneumatic nozzle bracket, this utility model avoids the dependence of the liquid injection system on additional devices such as liquid storage and pumping, and solves the problems of freezing and inconvenient maintenance in low temperature environments.

[0016] (2) This utility model enables the nozzle to be set independently of the vehicle body layout, avoiding the limitation of the nozzle installation position being fixed in the pre-embedded structure on the roof, and improving the flexibility of the structural layout.

[0017] (3) This utility model can be adapted to different shapes and positions of the lidar window, thereby achieving coverage of lidars at different installation positions and angles.

[0018] (4) The present invention provides a sealing structure at the connection between the nozzle bracket and the lidar body, making the connection more secure and reliable, while ensuring airtightness during installation. Attached Figure Description

[0019] Figure 1 This is an exploded view of the support body of this utility model;

[0020] Figure 2 This is a bottom view of the support body of this utility model;

[0021] Figure 3This is a front view of the bracket body of this utility model;

[0022] Figure 4 This is a schematic diagram of the assembly of the bracket body and the lidar body of this utility model;

[0023] Figure 5 This is a bottom view of the assembly of the bracket body and the lidar body of this utility model;

[0024] Figure 6 This is a schematic diagram of the sealing gasket structure of this utility model;

[0025] In the diagram, 1-LiDAR body; 11-Viewing window; 2-Bracket body; 21-Horizontal section; 211-Cantilever section; 212-Boss section; 22-Mounting section; 3-Nozzle; 4-Inlet base; 5-Quick connector; 6-Sealing ring; 7-First sealing gasket; 8-Second sealing gasket; 9-Steel sleeve. Detailed Implementation

[0026] The present invention will now be further described with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0027] like Figure 1 and Figure 2 As shown, a laser radar pneumatic nozzle bracket includes a bracket body 2, which includes a laterally extending horizontal portion 21 and mounting portions 22 extending downward at both ends of the horizontal portion. The lower end of the mounting portion 22 is provided with a mounting hole, into which a stainless steel sleeve 9 is embedded. The sleeve serves to provide reliable support and guidance for the fasteners. Figure 4 As shown, the mounting holes, fitted with fasteners, are used to securely connect the mounting part 22 to the lidar body 1, ensuring that the bracket body 2 can be stably mounted on the lidar body 1. This ensures the fasteners remain stable during assembly and use, preventing wear or hole wall deformation due to insufficient strength of the mounting part 22's base material. An air inlet base 4 is located on the rear side of the horizontal part 21, with a quick-connect coupling 5 threaded onto it. The quick-connect coupling 5 allows for quick connection with an external air source pipeline, facilitating the convenient input of compressed air into the bracket body 2. Multiple nozzles 3 are located at the bottom front side of the horizontal part 21, arranged at transverse intervals.

[0028] like Figure 2 and Figure 5As shown, the outer side of the horizontal portion 21 is provided with an outwardly extending overhanging section 211, and the nozzles 3 are evenly spaced along the lower edge of the overhanging section 211. The number of nozzles 3 can be selected and adjusted according to the width and height of the window portion 11 of the lidar body 1 to ensure that the jet airflow can cover the entire surface of the window portion 11, achieving comprehensive cleaning of the area. In this embodiment, the nozzle 3 is a frustum structure, which facilitates the formation of a relatively concentrated airflow during spraying, suitable for effectively sweeping local areas; in another embodiment, the nozzle 3 is a conical structure, the air outlet of which is diffused, which can disperse the airflow during spraying to increase the coverage area, thereby adapting to window portions 11 of different shapes or areas. In addition, the window portion 11 of the lidar body 1 can be inclined from top to bottom and outward. As the laser emission and reception window, the inclined arrangement of the window portion 11 facilitates the laser beam to form a reasonable detection angle with the space in front of the vehicle, while reducing the direct deposition of rainwater and dust during vehicle movement.

[0029] like Figure 1 As shown, a boss 212 is integrally formed on the rear center of the horizontal section 21. The air intake base 4 is disposed on the boss 212 and fixed by screws and nuts pre-embedded in the boss 212. The boss 212 provides the air intake base 4 with an independent mounting interface and sufficient thickness support, thereby ensuring that the connection strength and stability are not affected under repeated insertion and removal of external air sources and long-term load. If the air intake base 4 is directly connected to the bracket body 2, the limited wall thickness of the horizontal section 21 may lead to insufficient thread engagement and poor load-bearing capacity at the connection. A first air chamber is provided in the boss 212, which is connected to the air intake base 4. A second air chamber is provided in the horizontal section 21, which is connected to the first air chamber and the second air chamber. The second air chamber is connected to the nozzle 3, thereby forming a continuous gas flow path.

[0030] By forming a first air chamber within the boss portion 212, the incoming gas transitions from a point-like inlet to a planar distribution within a larger cross-section before connecting with the second air chamber. This helps reduce the probability of the aforementioned local high-speed scouring and lateral flow deviation, and provides a stable pressure field for the gas supply from the multiple nozzles 3. If the first air chamber of the boss portion 212 is not provided as an independent expansion buffer, the compressed air, after entering through the intake base 4, will impact the inner wall of the transverse portion 21 in the form of an approximately beam flow along the shortest path, forming a local high-speed scouring zone. The static and dynamic pressures at the inlet of the near-side nozzle 3, which is directly connected to this scouring zone, are higher than those at the far-side nozzle, resulting in excessively high outlet gas velocity at the near-side nozzle 3, a lengthened jet trajectory that tends to be biased towards a local area, and insufficient coverage by the far-side nozzle 3. At the same time, the long-term action of the high-speed beam flow on the thin wall of the transverse portion 21 will cause material wear and geometric deformation, which in turn will change the effective cross-section and local flow resistance of the second air chamber, further reducing the gas supply consistency among the nozzles 3.

[0031] In the specific assembly, the air intake base 4 is fixed by screws and pre-embedded nuts. The screws can be stainless steel Phillips head screws. The screws pass through the mounting holes of the air intake base 4 in sequence and engage with the stainless steel round nuts pre-embedded in the boss part 212, thereby achieving reliable locking. To improve the sealing performance, an annular sealing ring 6 is provided at the connection between the air intake base 4 and the boss part 212. The sealing ring can be made of EPDM rubber. The sealing ring 6 is compressed during the screw tightening process, thereby forming an annular sealing interface between the air intake base 4 and the boss part 212, preventing compressed air from leaking at the connection, and ensuring that the gas can smoothly enter the first air chamber through the air intake base 4, and then be distributed to the nozzle 3 through the second air chamber.

[0032] In addition, such as Figure 3 and Figure 5 As shown, mating structures are integrally formed on both sides of the bottom surface of the horizontal portion 21. These mating structures are ear-shaped and correspond to the rounded chamfer of the outer edge of the window portion 11 of the lidar body 1. When the horizontal portion 21 is assembled above the lidar body 1, this structure fits against the edge of the window portion 11, thereby reliably limiting the support body 2 in the lateral position and ensuring a stable relative positional relationship between the nozzle 3 and the window portion 11.

[0033] like Figure 1 , Figure 2 and Figure 6 As shown, the horizontal portion 21 of the bracket body 2 is mounted on the lidar body 1 via a sealing gasket. The sealing gasket includes a first sealing gasket 7 positioned between the protruding portion and the lidar body, and a second sealing gasket 8 positioned between the front side of the horizontal portion (specifically, the rear side of the cantilever section 211) and the outer side of the lidar body. The sealing gasket is made of silicone rubber and is compressed when the bracket body 2 is assembled to the lidar body 1, filling the gap between them, ensuring a close fit between the mating surfaces, and providing a buffering effect at the contact point, thereby improving installation stability. Finally, this ensures that the nozzle 3 of the cantilever section 211 is stably positioned above the viewing window 11 of the lidar body 1.

[0034] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A laser radar pneumatic nozzle bracket, comprising a bracket body (2), characterized in that: The bracket body (2) includes a horizontally extending horizontal part (21) and mounting parts (22) extending downward at both ends of the horizontal part; the mounting part (22) has a mounting hole at the lower end, and an air intake base (4) is provided on the rear side of the horizontal part (21). A quick connector (5) is threaded on the air intake base, and multiple nozzles (3) are provided on the bottom front side of the horizontal part (21).

2. The laser radar pneumatic nozzle bracket according to claim 1, characterized in that: The front side of the horizontal section (21) is provided with a forward-extending overhang section (211), and the nozzles (3) are evenly spaced along the lower edge of the overhang section (211).

3. A laser radar pneumatic nozzle bracket according to claim 2, characterized in that: The rear middle of the horizontal part (21) is integrally provided with a boss part (212), and the air intake base (4) is provided on the boss part (212) and fixed by screws and nuts pre-embedded in the boss part (212); a first air chamber is provided in the boss part (212), the first air chamber is connected to the air intake base (4), a second air chamber is provided in the horizontal part (21), the first air chamber is connected to the second air chamber, and the second air chamber is connected to the nozzle (3).

4. A laser radar pneumatic nozzle bracket according to claim 3, characterized in that: The horizontal section (21) is mounted on the lidar body (1) via a sealing gasket, and the nozzle (3) of the overhang section (211) is located above the window section (11) of the lidar body (1).

5. A laser radar pneumatic nozzle bracket according to claim 1 or 2, characterized in that: The nozzle (3) has a frustum or cone structure.

6. A laser radar pneumatic nozzle bracket according to claim 3, characterized in that: An annular sealing ring (6) is provided at the connection between the air intake base (4) and the first air chamber of the boss (212).

7. A laser radar pneumatic nozzle bracket according to claim 4, characterized in that: The sealing gasket includes a first sealing gasket (7) disposed on the boss portion and a second sealing gasket (8) disposed on the rear side of the overhang section (211).

8. A laser radar pneumatic nozzle bracket according to claim 4, characterized in that: The bottom surface of the horizontal part (21) extends downward integrally on both sides to form a mating structure, which is ear-shaped.

9. A laser radar pneumatic nozzle bracket according to claim 7, characterized in that: The sealing gasket is made of silicone rubber.

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