Cleaning nozzle and unmanned vehicle

By designing a cleaning nozzle and using airflow to form a shielding air curtain, the problem of water droplets on the surface of the lidar affecting the perception function is solved, and powerful shading and rain protection functions are achieved.

CN222496277UActive Publication Date: 2025-02-18NEOLITHIC HUITONG TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202421432858.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-21
Publication Date
2025-02-18
Estimated Expiration
2034-06-21

AI Technical Summary

Technical Problem

The lidar in existing driverless cars is affected by environmental temperature changes and other reasons, and water droplets are prone to adhere to the surface, affecting the perception function.

Method used

A cleaning nozzle is designed, including a nozzle body and an air inlet duct. The nozzle body is provided with an installation channel and an inner cavity. The arc-shaped air outlet is connected to the inner cavity. The air flow enters the inner cavity through the air inlet duct and blows out from the arc-shaped air outlet to form Shield the air curtain, blow off the surface water droplets and provide strong shading.

Benefits of technology

Effectively prevent water droplets attached to the surface of the lidar to affect the perception function, and provide strong shading to prevent raindrops from entering the detection area of ​​the lidar.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN222496277U_ABST
    Figure CN222496277U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of unmanned driving, automatic driving or unmanned vehicles, and particularly discloses a cleaning nozzle and an unmanned vehicle, the cleaning nozzle comprises a nozzle body and an air inlet pipe; the nozzle body is provided with a through mounting channel, and the laser radar can penetrate through the mounting channel; an inner cavity is formed in the nozzle body, an arc-shaped air outlet is formed in the side wall of the mounting channel, and the arc-shaped air outlet communicates with the inner cavity; the air inlet pipe is connected to the nozzle body and communicated with the inner cavity, and airflow can enter the inner cavity through the air inlet pipe and is blown out through the arc-shaped air outlet. Air flow blown out of the arc-shaped air outlet can blow off water drops on the surface of the laser radar so as to prevent the water drops attached to the surface of the laser radar from affecting the sensing function of the laser radar, meanwhile, a shielding air curtain formed by the air flow can shield the surface of the laser radar, the shielding capacity is high, and the laser radar can be protected from being damaged. Raindrops can be effectively prevented from dropping on a detection area of the laser radar.
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Description

Technical Field

[0001] The utility model relates to the technical field of unmanned driving, automatic driving or unmanned vehicles, and in particular to a cleaning nozzle and an unmanned vehicle. Background Art

[0002] Unmanned vehicles are a type of intelligent vehicle, also known as computer-driven vehicles or wheeled mobile robots. They are intelligent vehicles that achieve unmanned driving through computer systems. They integrate many technologies such as automatic control, architecture, artificial intelligence, and visual computing. They can sense the road environment through the on-board sensor system, automatically plan the driving route, and control the vehicle to reach the predetermined destination.

[0003] At present, the laser radar in driverless cars is an indispensable sensor, which can play a key ranging function. In the prior art, a rain shield is set on the laser radar of the driverless car to shield the laser radar to prevent raindrops from falling on the surface of the laser radar and affecting the perception quality of the laser radar. However, the shielding ability of the rain shield is low and cannot completely shield the laser radar. In addition, due to factors such as changes in ambient temperature, water droplets are easily attached directly to the surface of the laser radar, thereby affecting the perception function of the laser radar. Utility Model Content

[0004] The purpose of the utility model is to provide a cleaning nozzle and an unmanned vehicle to solve the problem in the prior art that water droplets are easily directly attached to the surface of the laser radar due to factors such as changes in ambient temperature, thereby affecting the perception function of the laser radar.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] On the one hand, the utility model provides a cleaning nozzle, which comprises:

[0007] The nozzle body is provided with a through-mounted installation channel, and the laser radar can be installed in the installation channel; an inner cavity is provided in the nozzle body, and a curved air outlet is provided on the side wall of the installation channel, and the curved air outlet is connected to the inner cavity;

[0008] An air inlet pipe is connected to the nozzle body and communicated with the inner cavity. Air flow can enter the inner cavity through the air inlet pipe and be blown out from the arc-shaped air outlet to form a shielding air curtain on the surface of the laser radar.

[0009] As an optional scheme for the above-mentioned cleaning nozzle, a first diverter rib, a second diverter rib and a third diverter rib are provided on the above-mentioned nozzle body, and the above-mentioned first diverter rib, the above-mentioned second diverter rib and the above-mentioned third diverter rib are all located in the above-mentioned inner cavity; one end of the above-mentioned first diverter rib, the above-mentioned second diverter rib and the above-mentioned third diverter rib are intersected to divide the above-mentioned inner cavity into a first wind cavity, a second wind cavity and a third wind cavity, and the above-mentioned first wind cavity, the above-mentioned second wind cavity and the above-mentioned third wind cavity are all connected to the above-mentioned arc-shaped air outlet, and the above-mentioned first wind cavity is located between the above-mentioned second wind cavity and the above-mentioned third wind cavity.

[0010] As an optional solution for the cleaning nozzle, the intersection of the first diverter rib, the second diverter rib and the third diverter rib is arranged opposite to the outlet of the air inlet pipe.

[0011] As an optional solution for the cleaning nozzle, the first diverter rib, the second diverter rib and the third diverter rib equally divide the outlet of the air inlet pipe.

[0012] As an optional solution of the cleaning nozzle, the second air cavity and the third air cavity are symmetrically arranged relative to the first air cavity.

[0013] As an optional scheme for the above-mentioned cleaning nozzle, a fourth diverter rib and a fifth diverter rib are also provided on the above-mentioned nozzle body. The above-mentioned fourth diverter rib is located in the above-mentioned second air cavity, and is used to separate the above-mentioned arc-shaped air outlet corresponding to the above-mentioned second air cavity into two air outlet areas; the above-mentioned fifth diverter rib is located in the above-mentioned third air cavity, and is used to separate the above-mentioned arc-shaped air outlet corresponding to the above-mentioned third air cavity into two air outlet areas.

[0014] As an optional scheme for the above-mentioned cleaning nozzle, the opening direction of the above-mentioned arc-shaped air outlet is inclined relative to the above-mentioned laser radar surface, and the angle between the above-mentioned opening direction of the above-mentioned arc-shaped air outlet and the above-mentioned laser radar surface is in the range of 70° to 80°.

[0015] As an optional solution for the cleaning nozzle, the central angle of the arc-shaped air outlet is greater than or equal to 180°.

[0016] On the other hand, the utility model provides an unmanned vehicle, including the cleaning nozzle as described above, the unmanned vehicle also including a vehicle body and a laser radar, and the cleaning nozzle and the laser radar are both arranged on the vehicle body.

[0017] As an optional solution for the above-mentioned unmanned vehicle, a fan driver, a blower and a flexible air duct are arranged on the above-mentioned vehicle body, the above-mentioned fan driver signal is connected to the above-mentioned blower, the above-mentioned blower is connected to one end of the above-mentioned flexible air duct, and the other end of the above-mentioned flexible air duct is connected to the above-mentioned air inlet duct; the ventilation cross-sectional area of ​​the above-mentioned flexible air duct is equal to the ventilation cross-sectional area of ​​the above-mentioned air inlet duct.

[0018] The beneficial effects of the utility model are:

[0019] The cleaning nozzle includes a nozzle body and an air inlet pipe, and the air inlet pipe is connected to the nozzle body. The nozzle body is provided with an installation channel that is arranged through, and the laser radar can be arranged in the installation channel, so that the nozzle body can enclose the laser radar. Among them, an inner cavity is arranged in the nozzle body, and an arc-shaped air outlet is arranged on the side wall of the installation channel, and the arc-shaped air outlet is connected to the inner cavity. At the same time, the air inlet pipe is connected to the inner cavity. The airflow can enter the inner cavity through the air inlet pipe and be blown out by the arc-shaped air outlet to form a shielding air curtain on the surface of the laser radar, so that the airflow blown out of the arc-shaped air outlet can blow off the water droplets on the surface of the laser radar, so as to prevent the water droplets attached to the surface of the laser radar from affecting the perception function of the laser radar. At the same time, the shielding air curtain formed by the airflow can shield the surface of the laser radar, and its shielding ability is strong, which can effectively prevent raindrops from falling on the detection area of ​​the laser radar. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of the cleaning nozzle provided in an embodiment of the utility model installed on a laser radar;

[0021] Figure 2 A schematic diagram of the structure of the cleaning nozzle provided in the embodiment of the utility model Figure 1 ;

[0022] Figure 3 A schematic diagram of the structure of the cleaning nozzle provided in the embodiment of the utility model Figure 2 ;

[0023] Figure 4 A schematic diagram of the structure of a portion of the cleaning nozzles provided in an embodiment of the utility model;

[0024] Figure 5 A schematic diagram of the structure of a portion of an unmanned vehicle provided in an embodiment of the utility model.

[0025] In the figure:

[0026] 1. Nozzle body; 11. Installation channel; 111. Arc-shaped air outlet; 12. Inner cavity; 121. First air cavity; 122. Second air cavity; 123. Third air cavity; 13. First diverter rib; 14. Second diverter rib; 15. Third diverter rib; 16. Fourth diverter rib; 17. Fifth diverter rib; 2. Air inlet pipe; 3. LiDAR; 4. Shielding air curtain; 5. Fan driver; 6. Blower; 7. Flexible air duct; 8. Fan interface. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] This embodiment provides a cleaning nozzle for blowing air to clean the laser radar 3 .

[0032] like Figure 1 to Figure 4As shown, the cleaning nozzle includes a nozzle body 1 and an air inlet pipe 2, and the air inlet pipe 2 is connected to the nozzle body 1. The nozzle body 1 is provided with a through-mounted installation channel 11, and the laser radar 3 can be installed in the installation channel 11, so that the nozzle body 1 can enclose the laser radar 3.

[0033] Among them, an inner cavity 12 is provided in the nozzle body 1, and an arc-shaped air outlet 111 is opened on the side wall of the installation channel 11. The arc-shaped air outlet 111 is connected to the inner cavity 12, and the air inlet pipe 2 is connected to the inner cavity 12. The airflow can enter the inner cavity 12 through the air inlet pipe 2 and be blown out by the arc-shaped air outlet 111 to form a shielding air curtain 4 on the surface of the laser radar 3, so that the airflow blown out by the arc-shaped air outlet 111 can blow off the water droplets on the surface of the laser radar 3, so as to prevent the water droplets attached to the surface of the laser radar 3 from affecting the perception function of the laser radar 3. At the same time, the shielding air curtain 4 formed by the airflow can shield the surface of the laser radar 3, and its shielding ability is strong, which can effectively prevent raindrops from falling on the detection area of ​​the laser radar 3.

[0034] like Figure 1 and Figure 4 As shown, the nozzle body 1 is provided with a first diverter rib 13, a second diverter rib 14 and a third diverter rib 15, and the first diverter rib 13, the second diverter rib 14 and the third diverter rib 15 are all located in the inner cavity 12, and one end of the first diverter rib 13, the second diverter rib 14 and the third diverter rib 15 are intersected to divide the inner cavity 12 into a first wind cavity 121, a second wind cavity 122 and a third wind cavity 123, so that the airflow can flow into the three wind cavities respectively, thereby realizing the separation and guidance of the airflow, and at the same time, the first wind cavity 121, the second wind cavity 122 and the third wind cavity 123 are all connected to the arc-shaped air outlet 111, and the first wind cavity 121 is located between the second wind cavity 122 and the third wind cavity 123, so as to prevent the airflow from being blown out from a local position of the arc-shaped air outlet 111, so that the middle and both sides of the laser radar 3 can be covered by the airflow. Optionally, the second air cavity 122 and the third air cavity 123 are symmetrically arranged relative to the first air cavity 121 , so as to improve the uniformity of the airflow flowing out of the arc-shaped air outlet 111 .

[0035] Specifically, the intersection of the first diverter rib 13, the second diverter rib 14 and the third diverter rib 15 is arranged opposite to the outlet of the air inlet pipe 2, so that the first diverter rib 13, the second diverter rib 14 and the third diverter rib 15 can directly divide the airflow flowing into the outlet of the air inlet pipe 2, thereby reducing the difficulty of diverting the airflow. Optionally, the first diverter rib 13, the second diverter rib 14 and the third diverter rib 15 evenly divide the outlet of the air inlet pipe 2, so that the airflow can flow evenly into the three air cavities, thereby preventing the airflow from gathering in one or two of the three air cavities and causing a gap in the shielding air curtain 4.

[0036] Furthermore, a fourth diverter rib 16 and a fifth diverter rib 17 are provided on the nozzle body 1. The fourth diverter rib 16 is located in the second wind cavity 122, and is used to separate the arc-shaped air outlet 111 corresponding to the second wind cavity 122 into two air outlet areas, and the fifth diverter rib 17 is located in the third wind cavity 123, and is used to separate the arc-shaped air outlet 111 corresponding to the third wind cavity 123 into two air outlet areas. Therefore, through the setting of the fourth diverter rib 16 and the fifth diverter rib 17, it is possible to ensure that the boundaries of the arc-shaped air outlet 111 corresponding to the second wind cavity 122 and the boundaries of the arc-shaped air outlet 111 corresponding to the third wind cavity 123 can blow out airflow, thereby expanding the protection area of ​​the laser radar 3.

[0037] Further, the opening direction of the arc-shaped air outlet 111 is inclined relative to the surface of the laser radar 3, and the angle between the opening direction of the arc-shaped air outlet 111 and the surface of the laser radar 3 is in the range of 70° to 80°, so that the airflow can flow from the side of the laser radar 3 close to the nozzle body 1 to the other side away from the nozzle body 1. Optionally, the central angle of the arc-shaped air outlet 111 is greater than or equal to 180°, so that the shielding air curtain 4 can completely cover the detection area of ​​the laser radar 3.

[0038] This embodiment also provides an unmanned vehicle, including the cleaning nozzle as described above, and the unmanned vehicle also includes a vehicle body and a laser radar 3, both of which are arranged on the vehicle body. By using the cleaning nozzle, the unmanned vehicle can blow off the water droplets on the surface of the laser radar 3, thereby preventing the water droplets from affecting the perception of the laser radar 3, and at the same time, a shielding air curtain 4 can be formed on the surface of the laser radar 3, thereby realizing shielding protection for the laser radar 3. Figure 5 As shown, a fan driver 5, a blower 6 and a flexible air duct 7 are provided on the vehicle body, the fan driver 5 signal is connected to the blower 6, so that the fan driver 5 can control the opening or closing of the blower, the blower 6 is connected to one end of the flexible air duct 7, and the other end of the flexible air duct 7 is connected to the air inlet pipe 2, so that the blower 6 can provide a high-speed airflow to the cleaning nozzle through the flexible air duct 7, wherein the ventilation cross-sectional area of ​​the flexible air duct 7 is equal to the ventilation cross-sectional area of ​​the air inlet pipe 2, thereby reducing the air volume loss of the airflow. Specifically, the blower 6 and the flexible air duct 7 are connected through a fan interface 8.

[0039] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A cleaning nozzle, characterized in that: include: A nozzle body (1), wherein the nozzle body (1) is provided with a penetrating installation channel (11), and a laser radar (3) can be installed in the installation channel (11); an inner cavity (12) is provided in the nozzle body (1), and a side wall of the installation channel (11) is provided with an arc-shaped air outlet (111), and the arc-shaped air outlet (111) is connected to the inner cavity (12); An air inlet pipe (2), the air inlet pipe (2) is connected to the nozzle body (1) and communicated with the inner cavity (12), and an air flow can enter the inner cavity (12) through the air inlet pipe (2) and be blown out from the arc-shaped air outlet (111) to form a shielding air curtain (4) on the surface of the laser radar (3).

2. The cleaning nozzle according to claim 1, characterized in that The nozzle body (1) is provided with a first diverter rib (13), a second diverter rib (14) and a third diverter rib (15); the first diverter rib (13), the second diverter rib (14) and the third diverter rib (15) are all located in the inner cavity (12); one end of the first diverter rib (13), the second diverter rib (14) and the third diverter rib (15) are arranged to intersect to divide the inner cavity (12) into a first air cavity (121), a second air cavity (122) and a third air cavity (123); the first air cavity (121), the second air cavity (122) and the third air cavity (123) are all connected to the arc-shaped air outlet (111), and the first air cavity (121) is located between the second air cavity (122) and the third air cavity (123).

3. The cleaning nozzle according to claim 2, characterized in that The intersection of the first diverter rib (13), the second diverter rib (14) and the third diverter rib (15) is arranged opposite to the outlet of the air inlet pipe (2).

4. The cleaning nozzle according to claim 3, characterized in that The first diverter rib (13), the second diverter rib (14) and the third diverter rib (15) equally divide the outlet of the air inlet pipe (2).

5. The cleaning nozzle according to claim 2, characterized in that: The second air cavity (122) and the third air cavity (123) are symmetrically arranged relative to the first air cavity (121).

6. The cleaning nozzle according to claim 2, characterized in that: The nozzle body (1) is also provided with a fourth diverter rib (16) and a fifth diverter rib (17); the fourth diverter rib (16) is located in the second air cavity (122) and is used to separate the arc-shaped air outlet (111) corresponding to the second air cavity (122) into two air outlet areas; the fifth diverter rib (17) is located in the third air cavity (123) and is used to separate the arc-shaped air outlet (111) corresponding to the third air cavity (123) into two air outlet areas.

7. The cleaning nozzle according to any one of claims 1 to 6, characterized in that: The opening direction of the arc-shaped air outlet (111) is arranged to be inclined relative to the surface of the laser radar (3), and the angle between the opening direction of the arc-shaped air outlet (111) and the surface of the laser radar (3) is in the range of 70° to 80°.

8. The cleaning nozzle according to any one of claims 1 to 6, characterized in that: The central angle of the arc-shaped air outlet (111) is greater than or equal to 180°.

9. An unmanned vehicle, characterized in that: The unmanned vehicle comprises a cleaning nozzle as described in any one of claims 1 to 8, and further comprises a vehicle body and a laser radar (3), wherein the cleaning nozzle and the laser radar (3) are both arranged on the vehicle body.

10. The unmanned vehicle according to claim 9, characterized in that: The vehicle body is provided with a fan driver (5), a blower (6) and a flexible air duct (7); the fan driver (5) is signal-connected to the blower (6); the blower (6) is connected to one end of the flexible air duct (7); and the other end of the flexible air duct (7) is connected to the air inlet duct (2); the ventilation cross-sectional area of ​​the flexible air duct (7) is equal to the ventilation cross-sectional area of ​​the air inlet duct (2).