CN220252160U

CN220252160U - Conformal window assembly for laser radar and laser radar

Info

Publication number: CN220252160U
Application number: CN202321553314.5U
Authority: CN
Inventors: 朱晓彤; 周权; 梁昌沛; 向少卿
Original assignee: Hesai Technology Co Ltd
Current assignee: Hesai Technology Co Ltd
Priority date: 2023-06-16
Filing date: 2023-06-16
Publication date: 2023-12-26
Anticipated expiration: 2033-06-16

Abstract

The utility model provides a conformal window assembly for a laser radar and the laser radar, wherein the conformal window assembly comprises a conformal window (3), a sealing piece (4), a fixing piece (6) and a fastening piece (5); the conformal window (3) is arranged on the shell (1) of the laser radar and is positioned through a mounting surface (9) corresponding to the shell (1) on the conformal window (3); the fixing piece (6) can apply pressure to the sealing piece (4) under the action of the fastening piece (5), so that the sealing piece (4) seals the conformal window (3) and fixes the conformal window (3) on the shell (1). According to the utility model, the conformal window is installed in the shell to realize accurate positioning of the conformal window, and the reliable fixing and sealing of the conformal window are realized by adding the sealing element on the conformal window and simultaneously matching the fixing element with the fastening element, so that the accurate installation of the conformal window of the laser radar is realized in a mode of separating the positioning, the fixing and the sealing, and the stability of the fixing precision and the sealing performance of the conformal window under the working conditions of temperature change, impact vibration and the like can be ensured.

Description

Conformal window assembly for laser radar and laser radar

Technical Field

The utility model relates to the field of laser radars, in particular to a conformal window assembly for a laser radar and the laser radar.

Background

The vehicle-mounted laser radar is usually arranged outside a vehicle body, such as a vehicle roof or a vehicle side, but a window of the existing laser radar is not always conformal with the vehicle body, so that the laser radar is quite uncoordinated with the appearance of the vehicle body, such as the laser radar arranged on the vehicle roof is mostly protruded out of the vehicle roof, which not only affects the beauty, but also increases the wind resistance in the running process of the vehicle, and therefore, the window is conformal with the vehicle body, which is a development trend of the vehicle-mounted laser radar.

The conformal window is used as an optical element, which affects the detection of the laser radar more than the traditional plane window, so that the position accuracy of the conformal window has higher requirements, and the conformal window needs to have a sealing function because the window is exposed in the external environment and rainwater, fog and the like are prevented from entering the laser radar; meanwhile, the conformal window is exposed in the external environment, so that the conformal window can suffer from environmental temperature changes caused by day-night alternation, season change and the like, and the vehicle-mounted use scene can also enable the conformal window to bear the influence of impact vibration, and the temperature changes, the impact vibration and the like can influence the stability of the positioning precision of the conformal window.

For the installation of the laser radar window, the current common scheme is to add a sealing gasket or gasket between the window and the installation surface of the shell, the gasket or gasket is extruded by the pressure generated by bonding the window and the shell to play a sealing effect, and the window is fixed relative to the shell by bonding. The sealing function can be realized by adding the sealing ring or the sealing gasket between the window and the shell, but the problem that the window cannot be contacted with the shell to influence the window positioning due to insufficient compression or overlarge compression possibly occurs due to the fact that the sealing piece is positioned between the window and the shell and needs to be compressed, even if the proper compression is controlled, the problem that the adhesive is loosened and volatilized to pollute easily occurs due to the fact that the sealing piece expands with heat and contracts with cold during the temperature change process influences the window positioning, meanwhile, the fixing and sealing are realized by the adhesive, the problem of the reliability of the laser radar is caused due to the instability of the adhesive under the temperature change, and the bonding mode cannot be well adapted to the environments of the vehicle-mounted laser radar, such as impact vibration and the like.

In summary, the existing laser radar window installation method cannot be well applied to requirements of the conformal window in the vehicle-mounted laser radar on high-precision positioning, sealing and fixing reliability.

The matters in the background section are only those known to the inventors and do not, of course, represent prior art in the field.

Disclosure of Invention

In view of one or more deficiencies in the prior art, the present utility model provides a conformal viewing window assembly for a lidar comprising a conformal viewing window (3), a seal (4), a mount (6), and a fastener (5);

the conformal window (3) is arranged on the shell (1) of the laser radar and is positioned through a mounting surface (9) corresponding to the shell (1) on the conformal window (3);

the fixing piece (6) can apply pressure to the sealing piece (4) under the action of the fastening piece (5), so that the sealing piece (4) seals the conformal window (3) and fixes the conformal window (3) on the shell (1).

According to one aspect of the utility model, the conformal window (3) is arranged in a mounting groove of the shell (1), and the mounting surface (9) is matched with the shell mounting surface (8) to realize positioning.

According to one aspect of the utility model, the outer surface of the conformal viewing window (3) and the outer shell (1) are matched with the shape of the structural member where the conformal viewing window is installed.

According to one aspect of the utility model, the seal (4) is resilient and is capable of sealing within its compression range.

According to one aspect of the utility model, the seal (4) may be integrally formed or separately formed such that the seal (4) seals the conformal viewing window (3).

According to one aspect of the utility model, the fixing member (6) may be integrally formed or separately formed, and the fixing member (6) is adapted to the outer shape of the sealing member (4).

According to one aspect of the utility model, the sealing element (4) and the fixing element (6) are provided with a plurality of holes for positioning the fastening elements (5), and the fastening elements (5) are respectively in one-to-one correspondence with the holes of the sealing element (4) and the holes of the fastening elements (5).

According to one aspect of the utility model, the fastener (5) is fastened to the housing (1) sequentially through the fastener (6) and the aperture of the seal (4), the seal (4) being pressed by the fastener (6) to fasten the conformal viewing window (3) to the housing (1).

According to one aspect of the utility model, the seal (4) is configured to surround the conformal viewing window (3), separating the conformal viewing window (3) from the fastener (5) and/or the fixture (6).

According to one aspect of the utility model, the seal (4) and the mount (6) do not block the light path of the conformal viewing window (3).

According to one aspect of the utility model, the sealing element (4) and the fixing element (6) are made to act as diaphragms by surface treatment and/or controlling the dimensions of the sealing element (4) and the fixing element (6).

The utility model also provides a laser radar which comprises a shell (1) and a conformal window assembly.

Compared with the prior art, the conformal window assembly for the laser radar is provided, the precise positioning of the conformal window is realized by installing the conformal window in the shell, and the reliable fixing and sealing of the conformal window are realized by adding the sealing element on the conformal window and simultaneously matching the fixing element with the fastening element, so that the precise installation of the conformal window of the laser radar is realized by separating the positioning, the fixing and the sealing, and the stability of the fixing precision and the sealing performance of the conformal window under the working conditions of temperature change, impact vibration and the like can be ensured.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of a lidar of the present utility model;

FIG. 2 is a schematic view of the internal structure of the lidar of the present utility model;

FIG. 3 is a schematic view of a conformal window assembly and lidar housing structure according to the present utility model;

FIG. 4A is a schematic cross-sectional view of a lidar of the present utility model;

FIG. 4B is a schematic view of a seal configuration in a conformal window assembly according to the present utility model;

FIG. 5 is a schematic cross-sectional view of a conformal window assembly according to one embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of a conformal window assembly according to another embodiment of the present utility model;

legend description: 1: a housing, 2: optical element, 3: conformal window, 4: seal, 5: fastener, 6: fixing piece, 7: cover, 8: housing mounting face, 9: and (5) a mounting surface.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless specifically defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, and may be mechanically connected, electrically connected, or may communicate with each other, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The embodiments of the present utility model will be described below with reference to the accompanying drawings, and it should be understood that the embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

The utility model provides a conformal window assembly for a laser radar and the laser radar, wherein the conformal window assembly comprises a conformal window 3, a sealing element 4, a fixing element 6 and a fastening piece 5; the conformal view window 3 is arranged on the shell 1 of the laser radar and is positioned through a mounting surface 9 corresponding to the shell 1 on the conformal view window 3; the fixing member 6 can apply pressure to the sealing member 4 under the action of the fastening member 5, so that the sealing member 4 seals the conformal viewing window 3 and fixes the conformal viewing window 3 on the housing 1. According to the utility model, the conformal window is installed in the shell to realize accurate positioning of the conformal window, and the reliable fixing and sealing of the conformal window are realized by adding the sealing element on the conformal window and simultaneously matching the fixing element with the fastening element, so that the accurate installation of the conformal window of the laser radar is realized in a mode of separating the positioning, the fixing and the sealing, and the stability of the fixing precision and the sealing performance of the conformal window under the working conditions of temperature change, impact vibration and the like can be ensured, and the conformal window assembly is described in detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the conformal viewing window assembly includes a conformal viewing window 3, a seal 4, a fixture 6, and a fastener 5, which together accomplish accurate positioning, reliable sealing, and fixing of the conformal viewing window 3; wherein the conformal view window 3 is fixed on the housing 1 of the laser radar, the conformal view window 3 shown in fig. 3 is installed from the inside of the housing 1, and is accurately positioned through the mounting surface 9 corresponding to the housing 1 on the conformal view window 3, and the positioning accuracy and reliability can be ensured through the direct contact between the mounting surface 9 of the view window and the mounting surface 8 of the housing.

As shown in fig. 4A-4B and fig. 5, the fixing member 6 can apply pressure to the sealing member 4 under the action of the fastening member 5, so that the sealing member 4 seals the conformal window 3 and fixes the conformal window 3 on the housing 1, and the sealing member 4 can cover a part of the conformal window 3 and a part of the housing 1, and this installation form can completely cover a gap formed after the conformal window 3 is installed with the housing 1.

The conformal window 3 is installed in the mounting groove on the shell 1, and is realized the location by the cooperation of mounting face 9 and shell mounting face 8, and the mounting groove has restricted the relative position of conformal window 3, through the processing that satisfies the precision requirement, can guarantee the position accuracy of conformal window 3 for shell 1 to ensure the position accuracy of shell 1 for optical element 2 in the laser radar, and then satisfy the optical detection requirement.

The outer surface of the conformal window 3 and the outer surface of the shell 1 are matched with the appearance of the structural member of the installation position of the conformal window, so as to realize conformal functions, for example, when the laser radar is installed on the roof, the conformal window 3 and the outer surface of the shell 1 for installing the conformal window 3 are consistent with the appearance of the installation position of the roof or basically consistent on the premise of meeting the requirement, thereby overcoming the problems that the prior non-conformal laser radar affects the appearance and increases the wind resistance and the like caused by protruding on the roof. When the cover 7 of the lidar needs to be exposed, it also needs to conform to surrounding structures.

The sealing element 4 has certain elasticity, for example, rubber materials are selected, so that the sealing element 4 can play a sealing effect in a certain compression range, and the sealing effect can be guaranteed in a larger compression range, so that the compression degree of the fixing element 6 is not required to be controlled deliberately during installation, compared with the mode that the sealing material is placed between a window and a shell, the sealing element 4 is more convenient to install, and the elasticity of the sealing element 4 can also absorb deformation difference and stress of the conformal window 3 and the rest structural members caused by temperature change and impact vibration, so that the positioning, sealing and fixing of the conformal window 3 are more reliable.

As shown in fig. 5, the sealing member 4 may be integrally formed, as shown in fig. 6, the sealing member 4 may also be separately formed, but the sealing member 4 needs to cover a gap formed between the conformal window 3 and the housing 1 to ensure a sealing function, wherein, as shown in fig. 6, the separately formed sealing member 4 may be separated in a transverse direction and a vertical direction, and may be segmented, and the structural form may be adjusted according to the specific structure of the conformal window 3 and the housing 1, the nature of the sealing member 4, and other factors.

Similar to the sealing element 4, the fixing element 6 can be integrally formed or can be formed in a split manner, but the fixing element 6 is adapted to the shape of the sealing element 4, so that the sealing element 4 can be pressed.

As shown in fig. 4A and 4B, the sealing member 4 and the fixing member 6 are provided with a plurality of holes for positioning the fastening member 5, the plurality of fastening members 5 are respectively in one-to-one correspondence with the plurality of holes of the sealing member 4 and the plurality of holes of the fastening member 5, the fastening member 5 sequentially passes through the fixing member 6 and the holes of the sealing member 4 to be fixed on the housing 1, the sealing member 4 fixes the conformal window 3 on the housing 1 by pressing the fixing member 6, the sealing member 4 is configured to surround the conformal window 3, the conformal window 3 is separated from the fastening member 5 and/or the fixing member 6, specifically, a gap formed after the conformal window 3 is installed with the housing 1 and the fastening member 5 are distributed with the sealing member 4, so that the gap between the fastening member 5 and the fixing member 6 is isolated from the gap formed by the housing 1 and the conformal window 3, and seal failure is avoided, as shown in the partial enlarged view in fig. 4A, the gap formed by the conformal window 3 and the housing 1 is blocked by the sealing member 4, otherwise no leakage occurs from the position of the fastening member 5, and the installation position of the fastening member 5 is separately sealed.

Meanwhile, the sealing member 4 and the fixing member 6 do not block the light path of the conformal window 3, but the sealing member 4 and the fixing member 6 are used as diaphragms by performing surface treatment and/or controlling the sizes of the sealing member 4 and the fixing member 6, and the diaphragms can play roles of shielding stray light, controlling the field of view, reducing aberration and the like, for example, black sealing member 4 can be selected and blackening treatment can be performed on the fixing member 6.

It should be noted that, the fastener 5 is a screw in the drawings, but a rivet, a buckle, or the like may be selected as the fastener 5 according to actual situations, and the fixing member 6 may be directly adhered to the housing 1 by an adhesive even in a situation where the use environment is not severe. In short, the fastening mode and the structural form of the fastening piece are various, and the parameters such as the materials, the structural form and the like of the sealing piece 4 and the fixing piece 6 are flexibly set according to actual conditions. Since the conformal viewing window 3 needs to participate in optical detection, it must be positioned accurately; the vehicle-mounted laser radar window is exposed in environments such as rain, fog, dust and the like, so that reliable sealing is required; since the vehicle environment has temperature change and impact vibration, the window needs to be reliably fixed. The positioning, sealing and fixing are the basis for realizing the performance of the conformal view window 3 of the vehicle-mounted laser radar, and the conformal view window 3 is required to be provided with a mounting structure different from that of the traditional view window just because of the special use requirement of the vehicle-mounted laser radar. And the utility model can also be applied to other occasions with the characteristics of vehicle-mounted environment.

In summary, the present utility model achieves accurate positioning of the conformal viewing window 3 by installing the conformal viewing window 3 within the housing 1, and reliable fixing and sealing of the conformal viewing window 3 by adding the sealing member 4 on the conformal viewing window 3, and simultaneously using the fixing member 6 and the fastening member 5 in a matched manner; according to the utility model, accurate installation of the conformal window 3 of the laser radar is realized by separating positioning from fixing and sealing, and the sealing effect of the sealing element 4 can be ensured in a larger compression range, so that the installation is convenient without deliberately controlling the compression degree of the fixing element 6, the elasticity of the sealing element 4 can absorb the deformation difference and stress of the conformal window 3 and the rest structural parts caused by temperature change and impact vibration, and the stability of the precision, sealing and fixing performance of the conformal window 3 under the working conditions of high and low temperature, impact vibration and the like can be ensured by matching the fastening element 5 and the fixing element 6, and the problems of difficult sealing failure, unreliable fixing, influence on the window positioning precision and the like existing in the traditional modes of adding sealing materials between the window and the positioning installation surface of the shell 1 and applying adhesive sealing and the like are overcome.

The utility model provides a laser radar, which comprises a shell 1, a conformal window assembly and a cover 7 and an optical element 2, wherein the conformal window assembly is fixed on the shell 1, the cover 7 is detachably arranged on the upper side of the shell 1, and the optical element 2 is arranged in the laser radar.

Finally, it should be noted that: the foregoing description is only illustrative of the present utility model and is not intended to be limiting, and although the present utility model has been described in detail with reference to the foregoing illustrative embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A conformal viewing window assembly for a lidar, comprising a conformal viewing window (3), a seal (4), a fixture (6), and a fastener (5);

2. The conformal viewing window assembly according to claim 1, wherein the conformal viewing window (3) is mounted in a mounting groove of the housing (1), and the mounting surface (9) cooperates with a housing mounting surface (8) to achieve positioning.

3. A conformal viewing window assembly according to claim 1, wherein the outer surface of the conformal viewing window (3) and the housing (1) together is adapted to the shape of the structural member in which it is mounted.

4. A conformal viewing window assembly according to claim 1, wherein the seal (4) is resilient and is capable of sealing within its compression range.

5. The conformal viewing window assembly according to claim 1, wherein the seal (4) may be integrally formed or separately formed such that the seal (4) seals the conformal viewing window (3).

6. A conformal viewing window assembly according to claim 1, wherein the securing member (6) is integrally or separately formed, the securing member (6) conforming to the shape of the sealing member (4).

7. The conformal window assembly according to claim 1, wherein the seal (4) and the fixture (6) have a plurality of holes thereon for positioning the fasteners (5), the plurality of fasteners (5) being in one-to-one correspondence with the plurality of holes of the seal (4) and the plurality of holes of the fasteners (5), respectively.

8. The conformal viewing window assembly according to claim 7, wherein the fastener (5) is secured to the housing (1) sequentially through the apertures of the securing member (6) and the sealing member (4), the sealing member (4) being pressed by the securing member (6) to secure the conformal viewing window (3) to the housing (1).

9. The conformal viewing window assembly according to claim 1, wherein the seal (4) is configured to surround the conformal viewing window (3), isolating the conformal viewing window (3) from the fastener (5) and/or the fixture (6).

10. The conformal viewing window assembly according to claim 1, wherein the seal (4) and the mount (6) do not obstruct the optical path of the conformal viewing window (3).

11. A conformal viewing window assembly according to claim 10, wherein the seal (4) and the mount (6) are made to act as diaphragms by surface treating and/or controlling the dimensions of the seal (4) and the mount (6).

12. A lidar comprising a housing (1) and a conformal window assembly as claimed in any of claims 1 to 11.