Laser radar and shell assembly thereof

Abstract

The invention provides a laser radar and a shell assembly thereof, the laser radar comprises an emitter and a receiver, the emitter emits detection light, and the receiver receives echo light generated after the detection light is reflected by an object; the housing assembly comprises a window, and the window is suitable for enabling the detection light to be emitted to the external space of the laser radar, and is also suitable for enabling the echo light to be emitted to the internal space of the laser radar. The flange is suitable for being in contact with the surface of the side, facing the inner space of the laser radar, of the window. The housing assembly can effectively improve the sealing performance of a carrier after the installation of the laser radar, facilitates the suppression and even elimination of wind noise, does not increase the size of the laser radar too much, and facilitates the control of the overall height of the laser radar.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of laser radar, in particular to a laser radar and a shell assembly thereof. BACKGROUND

[0002] The laser radar is a ranging sensor, which has the characteristics of long detection distance, high resolution, and less environmental interference, and is widely used in intelligent robots, unmanned aerial vehicles, unmanned driving and other fields.

[0003] With the rise of assisted driving and unmanned driving technology, laser radar as an important detection component is increasingly valued. Laser radar detects the position, speed and other information of an object by emitting a laser beam. Currently, laser radar is usually installed outside the vehicle cabin, such as on the top of the vehicle or on the side of the vehicle. In order to ensure the normal use of the laser radar, it usually has waterproof and sealing requirements. SUMMARY

[0004] The problem solved by the present disclosure is how to improve the wind noise resistance of the laser radar.

[0005] To solve the above problems, the present disclosure provides a shell assembly of a laser radar, the laser radar comprising a transmitter and a receiver, the transmitter emitting a detection light, and the receiver receiving a return light generated after the detection light is reflected by an object; the shell assembly comprising: a window, the window being adapted to allow the detection light to exit to an external space of the laser radar, and the window being further adapted to allow the return light to enter to an internal space of the laser radar; a flange, the flange being adapted to be in contact with a side surface of the window facing the internal space of the laser radar.

[0006] Optionally, when the laser radar is installed on a carrier, the window is exposed from a mounting hole of the carrier; a side surface of the flange facing the mounting hole of the carrier is in abutment with an inner wall of the carrier through a sealing ring.

[0007] Optionally, the material of the sealing ring is foam.

[0008] Optionally, the flange comprises a limiting rib, and the limiting rib is located on a surface of the flange facing the external space of the laser radar.

[0009] Optionally, each edge of the window has at least one limiting rib.

[0010] Optionally, at least one edge of the window has at least two limiting ribs.

[0011] Optionally, the flange comprises an abutting portion, the abutting portion comprises an abutting surface and an outer surface, wherein the abutting surface faces the external space of the laser radar, and the outer surface is connected with the abutting surface and forms a preset included angle with the abutting surface; and the limiting rib protrudes from the outer surface.

[0012] Optionally, the limiting rib is a wedge-shaped limiting rib.

[0013] Optionally, when the laser radar is installed on a carrier, the wedge-shaped surface of at least part of the limiting rib is in contact with the inner wall of the mounting hole of the carrier, so that the distance between the geometric center of the window and the geometric center of the mounting hole is less than a preset distance threshold.

[0014] Optionally, the shell and the window are fixedly connected to form an internal space of the laser radar; and the flange is connected with the shell.

[0015] Optionally, the flange and the shell are in an integrated structure.

[0016] Optionally, the flange protrudes from the outer surface of the shell away from the internal space of the laser radar.

[0017] Optionally, the flange comprises an abutting portion, the abutting portion is located between the shell and the window, and the abutting portion protrudes from the outer surface of the shell away from the internal space of the laser radar.

[0018] Optionally, the shell comprises an upper cover and a base, the flange and the upper cover are in an integrated structure, and the flange further comprises an extension portion, the extension portion extends towards the internal space of the laser radar, and the extension portion is in contact with the base.

[0019] Correspondingly, the present disclosure also provides a laser radar, comprising: a transmitter adapted to emit probe light; a receiver adapted to receive echo light generated after the probe light is reflected by an object; a shell assembly adapted to form an internal space of the laser radar to accommodate the transmitter and the receiver, the shell assembly comprising: a window through which the probe light exits to the outside of the laser radar and through which the echo light enters to the receiver; and a flange adapted to be in contact with a side surface of the window facing the internal space of the laser radar.

[0020] Optionally, the shell assembly further comprises: a shell fixedly connected with the window to form the internal space of the laser radar; and the transmitter and the receiver are located in the internal space.

[0021] Compared with the prior art, the technical scheme of the present disclosure has the following advantages:

[0022] In the technical solution of the present disclosure, the housing assembly of the laser radar has a flange in contact with a side surface of the window facing the internal space of the laser radar. The flange protrudes from the outer edge of the window, and can shield the gap between the window and the carrier, effectively improving the sealing between the carrier and the laser radar after the laser radar is installed, and facilitating the suppression or even elimination of wind noise. Moreover, the flange is arranged in the housing assembly of the laser radar to suppress wind noise, without excessively increasing the volume of the laser radar, and facilitating the control of the overall height of the laser radar.

[0023] In the optional solution of the present disclosure, the flange includes a limiting rib located on the surface of the flange facing the external space of the laser radar. During assembly, the limiting rib first contacts the carrier, and can effectively ensure that the gap regions around the window are uniform. The arrangement of the limiting rib can effectively reduce the assembly difficulty and improve the assembly precision.

[0024] In the optional solution of the present disclosure, the flange and the upper cover of the shell are in an integrated structure. The flange and the upper cover are integrally connected, which can effectively reduce the assembly surface difference, separate the modeling surface of the window and the mounting point, realize the platformization of multiple vehicle models, increase the interchangeability, reduce the types of mold opening, and reduce the manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can also obtain other drawings according to the provided drawings without creative labor. The drawings are used to provide further understanding of the present disclosure, and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the present disclosure, and do not constitute a limitation on the present disclosure. In the drawings:

[0026] Figure 1 is a perspective structural schematic diagram of some embodiments of the housing assembly of the laser radar of the present disclosure;

[0027] Figure 2 is a cross-sectional structural schematic diagram of some embodiments of the housing assembly of the laser radar of the present disclosure after assembly is completed;

[0028] Figure 3 is a cross-sectional structural schematic diagram of some embodiments of the housing assembly of the laser radar of the present disclosure after assembly is completed;

[0029] Figure 4 is a cross-sectional structural schematic diagram of some embodiments of the housing assembly of the laser radar of the present disclosure after assembly is completed;

[0030] Figure 5 is a cross-sectional structural schematic view of some embodiments of a housing assembly of the disclosed lidar. DETAILED DESCRIPTION

[0031] In the following, certain exemplary embodiments are described. As will be realized by one of ordinary skill in the art, the described embodiments can be modified in various different ways. Therefore, the drawings and descriptions are to be regarded as illustrative in nature and not as restrictive.

[0032] In the description of the disclosure, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the disclosure. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the disclosure, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0033] In the description of the disclosure, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected: it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the disclosure can be understood according to the specific circumstances.

[0034] In the present disclosure, unless specifically defined and limited otherwise, a first feature "on" or "under" a second feature can include that the first and second features are directly in contact, or that the first and second features are not directly in contact but are in contact through another feature between them. Moreover, the first feature "over", "above" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0035] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present disclosure. For the purpose of simplicity and clarity, the descriptions of the specific examples in the following are described. Of course, they are only examples and are not intended to limit the present disclosure. Moreover, the present disclosure can repeatedly refer to reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0036] As known from the background, the prior art laser radar needs to further improve its wind noise resistance capability.

[0037] To solve the technical problem, the present disclosure provides a housing assembly of a laser radar, the laser radar comprising a transmitter and a receiver, the transmitter emitting a probe light, and the receiver receiving a return light generated after the probe light is reflected by an object; the housing assembly comprising: a window, the window being suitable for making the probe light exit to an external space of the laser radar, and the window also being suitable for making the return light incident to an internal space of the laser radar; a flange, the flange being suitable for being in contact with a side surface of the window facing the internal space of the laser radar.

[0038] The technical solution of the present disclosure, the housing assembly of the laser radar has a flange in contact with a side surface of the window facing the internal space of the laser radar. The flange protrudes from the outer edge of the window, and the flange can shield the gap between the window and the carrier, effectively improving the sealing between the carrier and the laser radar after the laser radar is installed, and is conducive to the suppression or even elimination of wind noise. Moreover, by setting the flange in the housing assembly of the laser radar to suppress wind noise, the volume of the laser radar is not excessively increased, which is conducive to controlling the overall height of the laser radar.

[0039] In order to make the above-mentioned purposes, features and advantages of the present disclosure more obvious and easy to understand, the specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0040] Reference Figures 1 to 5 wherein Figure 1 is a perspective structural schematic diagram of some embodiments of the housing assembly of the laser radar of the present disclosure; Figure 2 is a structural schematic diagram of some embodiments of the housing assembly of the laser radar of the present disclosure after assembly; Figure 3 is a cross-sectional structural schematic diagram of some embodiments of the housing assembly of the laser radar of the present disclosure; Figure 4 is a cross-sectional structural schematic diagram of some embodiments of the housing assembly of the laser radar of the present disclosure; Figure 5 is a cross-sectional structural schematic diagram of some embodiments of the housing assembly of the laser radar of the present disclosure.

[0041] The housing assembly 100 is a housing assembly of a laser radar. The laser radar comprises a transmitter and a receiver. The transmitter emits probe light. The receiver receives echo light generated after the probe light is reflected by an object.

[0042] The transmitter comprises at least one laser. The laser can comprise one or more of a vertical-cavity surface-emitting laser (VCSEL), an edge-emitting laser (EEL), a distributed feedback laser (DFB), a fiber laser, etc. The receiver comprises at least one detector. The detector can comprise one or more of a single photon avalanche diode (SPAD), an avalanche photodiode (APD), a silicon photomultiplier (SiPM), etc.

[0043] The housing assembly comprises a window, which is suitable for emitting the probe light to an external space of the laser radar and is also suitable for making the echo light incident to an internal space of the laser radar. The housing assembly further comprises a flange, which is suitable for being in contact with a side surface of the window facing the internal space of the laser radar.

[0044] The flange protrudes from the outer edge of the window, thereby shielding the gap between the window and a carrier (not shown in the figure), effectively improving the sealing of the carrier after the laser radar is installed, which is conducive to the suppression or even elimination of wind noise; and by setting the flange to suppress wind noise, the overall size of the laser radar will not be excessively increased, which is conducive to controlling the overall height of the laser radar.

[0045] The flange protrudes from the edge of the window, and the protruding part of the flange can abut against the carrier, leaving a gap between the window and the carrier, so as to avoid stress on the window in contact with the carrier and prevent stress cracking of the window.

[0046] As shown in some embodiments, Figure 1 At the edge of the window 110, the flange 120 surrounds the window 110; in the direction away from the internal space of the laser radar, the flange 120 protrudes from the edge of the window 110.

[0047] In some embodiments of the present disclosure, when the laser radar is installed on the carrier, the window is exposed from the mounting hole of the carrier; the side surface of the flange facing the mounting hole of the carrier abuts against the inner wall of the carrier through the sealing ring.

[0048] The flange abuts against the carrier through the sealing ring. The sealing ring surrounds the edge of the flange and fills the gap between the flange and the interior of the carrier, thereby further improving the sealing between the carrier and the laser radar after installation of the laser radar, and facilitating further control of wind noise; moreover, the method of adding a sealing ring to improve sealing will not further increase the overall size of the laser radar, and the sealing can be improved without increasing the overall size of the laser radar.

[0049] As shown in detail in Figure 2 and Figure 3 The laser radar is a vehicle-mounted laser radar, and the carrier on which the laser radar is installed is a vehicle. The outer panel 101 of the vehicle is provided with a mounting hole. The window 110 is located in the mounting hole and is exposed from the mounting hole. The surface of the flange 120 facing the mounting hole abuts against the inner wall of the outer panel 101 through the sealing ring 102.

[0050] In some embodiments, the material of the sealing ring is foam. In other embodiments of the present disclosure, the material of the sealing ring can also be other materials that can fill the gap or have elasticity.

[0051] In some embodiments of the present disclosure, the flange includes an abutting portion, and the abutting portion includes an abutting surface facing the external space of the laser radar. The abutting portion is suitable for contacting the window to fix the window, and the abutting surface is suitable for contacting the side surface of the window facing the internal space of the laser radar to contact the window and the abutting portion.

[0052] The flange also includes an abutting portion having an abutting surface facing the inner wall of the carrier. The abutting portion is suitable for abutting against the inner wall of the carrier, and the abutting portion can shield the gap between the window and the carrier, thereby improving the sealing of the carrier after installation of the laser radar and suppressing or even eliminating wind noise.

[0053] As shown in Figures 3 to 5 The flange 120 has an abutting portion 121, which is annular. The abutting surface 121a of the abutting portion 121 is in contact with the edge of the surface of the window 110 facing the interior of the lidar, thereby achieving the connection between the window 110 and the flange 120.

[0054] The flange 120 also has an abutting portion 122. The abutting portion 122 is annular around the window 110. The abutting portion 122 is located on the side of the abutting portion 121 away from the window 110. The radial dimension of the abutting portion 122 is greater than the radial dimension of the abutting portion 121, and the abutting portion 122 protrudes outwardly from the radial outer surface of the abutting portion 121. The radially outer end of the abutting portion 122 is in abutment with the inner wall of the outer panel 101 through the sealing ring 102. The abutting surface 122a and the abutting surface 122b (as shown in Figure 3 ) of the abutting portion 122 are in contact with the sealing ring 102. The radial direction can be the direction in which the geometric center of the flange points to the edge of the flange.

[0055] In some embodiments of the present disclosure, the radial dimension of the flange is determined according to the size of the window and the carrier mounting structure. When the lidar is applied to a vehicle, the radial dimension of the flange is determined according to the radial dimension of the window and the gap between the window and the outer panel of the vehicle. The radial dimension of the flange can ensure the wind noise prevention effect, and does not excessively increase the overall height of the outer panel of the vehicle. In some embodiments, the radial dimension of the abutting portion 122 of the flange is in the range of 3-8 mm. For example, the radial dimension of the abutting portion 122 of the flange can be in the range of 5-6 mm.

[0056] In some embodiments of the present disclosure, the flange includes a limiting rib located on the surface of the flange facing the external space of the lidar. The limiting rib is suitable for limiting the position of the window in the mounting hole, thereby achieving the purpose of reducing assembly difficulty and improving assembly accuracy.

[0057] As shown in Figure 1 some embodiments, the flange 120 has a plurality of limiting ribs 123, and the plurality of limiting ribs 123 are distributed around the edge of the window 110 in the direction in which the flange 120 surrounds.

[0058] In some embodiments, the position of each edge of the window has at least one limiting rib. The limiting rib is arranged at the position of each edge of the window, which can effectively ensure that the window is located in the central position of the mounting hole and ensure that the gap around the window is uniform.

[0059] In some embodiments of the example, at least two of the limiting ribs are arranged along the edge of the window. The at least two limiting ribs can effectively ensure the uniformity of the gap between the window and the carrier in the direction of the edge.

[0060] In some embodiments as shown in the figure, Figure 1 In some embodiments as shown in the figure, the window 110 has four edges. The longer edges of the window 110 are provided with three limiting ribs 123. The shorter edges of the window 110 are provided with one limiting rib 123.

[0061] In some embodiments, the abutting portion of the flange has an outer side surface connected to the abutting surface and forming a preset included angle with the abutting surface. The limiting rib protrudes from the outer side surface.

[0062] In some embodiments as shown in the figure, Figure 1 In some embodiments as shown in the figure, the abutting portion 121 of the flange 120 has an outer side surface 121b. The outer side surface 121b and the abutting surface 122a form an obtuse angle. In other embodiments, the outer side surface and the abutting surface can also form an acute angle or a right angle. For example, the preset included angle can be in the range of 95° to 145°. In some embodiments, the preset included angle can be in the range of 95° to 120°. The limiting ribs 123 are distributed on the outer side surface 121b of the abutting portion 121 and protrude from the outer side surface 121b of the abutting portion 121, and the outer side surface 121b of the abutting portion 121 is exposed between adjacent limiting ribs 123.

[0063] In some embodiments, the limiting rib is a wedge-shaped limiting rib. The cross-sectional shape of the limiting rib is wedge-shaped. Specifically, the thickness of the limiting rib near one end of the outer space of the lidar is smaller than the thickness of the limiting rib near the other end of the inner space of the lidar. For example, in the direction from the outer space of the lidar to the inner space of the lidar, the thickness of the limiting rib gradually increases, wherein the thickness of the limiting rib is the dimension of the limiting rib in the direction perpendicular to the outer side surface of the abutting portion.

[0064] In some embodiments, when the lidar is mounted on the carrier, the wedge-shaped surface of at least part of the limiting rib is in contact with the inner wall of the mounting hole of the carrier, so that the distance between the geometric center of the window and the geometric center of the mounting hole is less than a preset distance threshold. By contacting the wedge-shaped surface of the limiting rib with the inner part of the mounting hole of the carrier, the uniformity of the gap area around the window can be effectively ensured, thereby reducing the assembly difficulty and improving the assembly precision.

[0065] In some embodiments as shown in the figure, Figures 3 to 5In some embodiments as shown, the limiting ribs 123 have wedge surfaces 123a. The wedge surfaces 123a are at a preset angle with the outer side of the abutting portion of the flange 120. As shown, Figure 4 As shown, the wedge surfaces 123a of the limiting ribs 123 and the outer decorative outer plate 101 of the carrier form a first gap E. A second gap F is formed between the window 110 and the outer decorative outer plate 101 of the carrier.

[0066] In some embodiments, the first gap E is in the range of 0-0.5 mm. When assembled along the X direction, as shown, Figure 3 As shown, the wedge surfaces 123a of the limiting ribs 123 can be in contact with the outer decorative outer plate 101. There can be assembly errors between the lidar and the carrier, and the wedge surfaces 123a of the limiting ribs 123 can also have a gap of 0-0.5 mm with the outer decorative plate 101. For example, the wedge surfaces 123a of some limiting ribs 123 are in contact with the outer decorative plate 101, and the wedge surfaces 123a of some limiting ribs 123 have a gap with the outer decorative plate 101.

[0067] In some embodiments, the second gap F is greater than the first gap E. When assembled along the X direction, the wedge surfaces 123a of the limiting ribs 123 are in contact with the outer decorative plate 101 first. Because the window edge is provided with multiple wedge limiting ribs, the contact of the multiple wedge limiting ribs with the outer decorative plate 101 can make the distance between the geometric center of the window and the geometric center of the mounting hole less than a preset distance threshold. For example, the preset threshold can be any value in the range of 0.5-6 mm. For example, the threshold can be 5 mm, 4 mm, 3 mm, 2 mm, 1 mm, etc.

[0068] The second gap F is greater than the first gap E. When assembled along the X direction, the wedge surfaces 123a of the limiting ribs 123 are in contact with the outer decorative plate 101 first. This can also avoid the contact of the window 110 with the outer decorative plate 101, avoid the cracking of the window 110 due to contact stress, and improve the safety and reliability of the lidar.

[0069] In some embodiments of the present disclosure, the shell assembly further comprises: a shell, the shell and the window are fixedly connected, forming an internal space of the lidar. The flange is connected with the shell. The shell is located on the side of the flange away from the window, and the shell cooperates with the window and the flange to enclose the internal space of the lidar to accommodate various elements of the lidar. Specifically, the shell comprises an upper cover and a base.

[0070] Continuing to refer to Figures 1 to 5The housing assembly has a rectangular outer shell 130, with the flange 120 having an abutment portion 122 located between the outer shell 130 and the viewing window 110. The outer shell 130 includes a viewing window on the side near the viewing window 110. For example, the outer shell 130 may have an open structure on the side near the viewing window 110, with the flange 120 connected to the open structure side of the outer shell 130. The open structure of the outer shell allows probe light and echo light to pass through the viewing window 110.

[0071] In some embodiments, the flange and the housing are an integral structure. The integral connection between the flange and the housing effectively reduces assembly, improves assembly accuracy, and lowers manufacturing costs. Furthermore, the flange can conceal the gap between the window and the carrier, separating the window's styling surface from the mounting point. This overcomes the limitations imposed by the mounting point on the window's styling surface design, enabling platform-based design for multiple vehicle models, increasing interchangeability and commonality, reducing the types of molds required, and ultimately lowering costs.

[0072] Specifically, such as Figures 3 to 5 As shown, the housing 130 includes a top cover 131 and a base 132. The top cover 131 and the base 132 can be fixedly connected by a connector. In some embodiments, the flange 120 and the top cover 131 are an integral structure.

[0073] In some embodiments, the flange protrudes from the outer surface of the housing opposite to the internal space of the lidar. For example, in the vertical direction, the flange protrudes from the outer surface of the housing opposite to the internal space of the lidar. In the horizontal direction, the abutment protrudes from the outer surface of the housing opposite to the internal space of the lidar.

[0074] In some embodiments, the flange further includes an extension extending toward the interior of the lidar, the extension contacting the base. The extension is adapted to improve the stability of the connection between the flange and the housing.

[0075] like Figures 3 to 5 As shown, the extension 124 of the flange 120 is located on the surface of the base 132 facing the internal space of the lidar. Vertically, the surface of the extension 124 facing the external space of the lidar is in contact with the surface of the base 132 facing the internal space of the lidar.

[0076] In some embodiments, the extension 124 and the base 132 can be connected by a connector. Alternatively, the extension 124 and the base 132 can be connected by cooperating components on the extension 124 and the base 132, such as a clamping groove provided on the extension 124 and a clamping buckle provided on the base 132, so that the extension 124 and the base 132 are fixed by cooperation of the clamping groove and the clamping buckle. The extension 124 and the base 132 can also be fixedly connected by an adhesive.

[0077] Accordingly, the present disclosure also provides a laser radar.

[0078] The laser radar comprises a transmitter adapted to emit probe light, a receiver adapted to receive echo light generated by the probe light after being reflected by an object, a housing assembly (as shown in Figure 1 The housing assembly is adapted to form an internal space of the laser radar to accommodate the transmitter and the receiver, and comprises a window 110 through which the probe light exits to the outside of the laser radar and the echo light enters to the receiver, and a flange 120 adapted to be in contact with a side surface of the window 110 facing the inside of the laser radar.

[0079] The flange 120 of the housing assembly protrudes from the outer edge of the window 120, which shields the gap around the window 110, thereby effectively improving the sealing performance of the laser radar after installation, and effectively suppressing or even eliminating wind noise. Moreover, the method of suppressing wind noise by the flange 120 does not excessively increase the volume of the laser radar, which is conducive to controlling the overall height of the laser radar.

[0080] In some embodiments of the present disclosure, the housing assembly further comprises an outer shell 130 fixedly connected with the window 110 to form an internal space of the laser radar, and the transmitter and the receiver are located in the internal space.

[0081] It should be understood that the division of each module and unit in the above system is only a logical function division, and another division mode can be used in actual implementation. In actual implementation, all or part of the modules and units can be integrated into one physical entity, or can be physically separated. In addition, the modules and units in the device can be implemented in the form of processor calling software. For example, the device includes a processor, the processor is connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to implement any one of the above methods or to implement the functions of each module and each unit of the device. The processor is, for example, a general processor such as a central processing unit (CPU) or a microprocessor, and the memory is a system memory or an external memory. Alternatively, the modules and units in the device can be implemented in the form of hardware circuit, and the functions of part or all of the modules can be implemented by designing the hardware circuit. The hardware circuit can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application specific integrated circuit (ASIC), and the functions of part or all of the modules are implemented by designing the logical relationship between elements in the circuit. For another example, in another implementation, the hardware circuit is a programmable logic device (PLD) that can be implemented by configuring the logical relationship between the logical gate circuits through a configuration file, so as to implement the functions of part or all of the modules. All modules of the above system can be implemented in the form of processor calling program, or all modules can be implemented in the form of hardware circuit, or part of the modules can be implemented in the form of processor calling program, and the remaining part can be implemented in the form of hardware circuit.

[0082] In summary, the housing assembly of the laser radar has a flange in contact with a side surface of the window facing an internal space of the laser radar. The flange protrudes from an outer edge of the window, and the flange can shield the gap between the window and the carrier, effectively improve the sealing of the carrier after the laser radar is installed, and facilitate the suppression or even elimination of wind noise. Moreover, by setting the flange in the housing assembly of the laser radar to suppress wind noise, the volume of the laser radar is not excessively increased, which is conducive to controlling the overall height of the laser radar.

[0083] Moreover, the flange includes a limiting rib located on a surface of the flange facing an external space of the laser radar. During assembly, the limiting rib is first contacted, and the limiting rib can effectively ensure that the gap areas around the window are uniform; the limiting rib is provided, which can effectively reduce the assembly difficulty and improve the assembly precision.

[0084] Furthermore, the flange and the upper cover of the housing are an integral structure. The integral connection between the flange and the upper cover effectively reduces assembly surface differences, allows for the separation of the window styling surface from the mounting point, enables platformization across multiple vehicle models, increases interchangeability and commonality, reduces the types of molds required, and lowers manufacturing costs.

[0085] While the above disclosure is provided, it is not limited thereto. Any person skilled in the art may make various alterations and modifications without departing from the spirit and scope of this disclosure; therefore, the scope of protection of this disclosure shall be determined by the scope defined in the claims.

Claims

1. A housing assembly for a lidar, the housing assembly comprising: The laser radar comprises a transmitter and a receiver, the transmitter is adapted to emit probe light, and the receiver is adapted to receive echo light generated after the probe light is reflected by an object; the housing assembly comprises: a window, which is adapted to allow the probe light to exit to an external space of the laser radar and is also adapted to allow the echo light to enter to an internal space of the laser radar; a flange, which is adapted to contact a side surface of the window facing the internal space of the laser radar.

2. The housing assembly of claim 1, wherein, When the laser radar is installed on a carrier, the window is exposed from a mounting hole of the carrier; a side surface of the flange facing the mounting hole of the carrier is in abutment with an inner wall of the carrier through a sealing ring.

3. The housing assembly of claim 2, wherein, The material of the sealing ring is foam.

4. The housing assembly of claim 1, wherein, The flange comprises a limiting rib, and the limiting rib is located on a surface of the flange facing the external space of the laser radar.

5. The housing assembly of claim 4, wherein, At least one limiting rib is located at each edge of the window.

6. The housing assembly of claim 5, wherein, At least two limiting ribs are located at at least one edge of the window.

7. The housing assembly of claim 5, wherein, The flange comprises an abutting portion, and the abutting portion comprises an abutting surface and an outer surface, wherein the abutting surface faces the external space of the laser radar, and the outer surface is connected with the abutting surface and forms a preset included angle with the abutting surface; The limiting rib protrudes from the outer surface.

8. The housing assembly of claim 5, wherein, The limiting rib is a wedge-shaped limiting rib.

9. The housing assembly of claim 8, wherein, When the laser radar is installed on the carrier, the wedge-shaped surface of at least part of the limiting rib is in contact with the inner wall of the mounting hole of the carrier, so that the distance between the geometric center of the window and the geometric center of the mounting hole is less than a preset distance threshold.

10. The housing assembly of claim 1, wherein, Further comprising: an outer shell, which is fixedly connected with the window to form the internal space of the laser radar; the flange is connected with the outer shell.

11. The housing assembly of claim 10, wherein, The flange and the outer shell are in an integrated structure.

12. The housing assembly of claim 10, wherein, The flange protrudes from an outer surface of the outer shell facing away from the internal space of the laser radar.

13. The housing assembly of claim 12, wherein, The flange comprises an abutting portion, which is located between the outer shell and the window and protrudes from an outer surface of the outer shell facing away from the internal space of the laser radar.

14. The housing assembly of claim 12, wherein, The outer shell comprises a top cover and a base, the flange and the top cover are in an integrated structure, and the flange further comprises an extension portion, which extends towards the internal space of the laser radar and is in contact with the base.

15. A lidar, comprising: comprising: a transmitter, which is adapted to emit probe light; a receiver, which is adapted to receive echo light generated after the probe light is reflected by an object; a housing assembly, which is adapted to form an internal space of the laser radar to accommodate the transmitter and the receiver, and comprises a window, through which the probe light exits to an external space of the laser radar and the echo light enters to the receiver; a flange, which is adapted to contact a side surface of the window facing the internal space of the laser radar.

16. The lidar of claim 15, wherein, The housing assembly further comprises an outer shell, which is fixedly connected with the window to form the internal space of the laser radar; the transmitter and the receiver are located in the internal space.

Images