An automobile long-distance laser radar and radar shield mounting and positioning structure and mounting method

Abstract

The application discloses a kind of long-distance laser radar and radar shield mounting and positioning structure and mounting method, it is characterized in that: laser radar positioning is installed on radar support, the radar support is installed on radar shield;The edge of the appearance surface of the laser radar is equipped with front end limiting groove, and the positioning rib that is limited in the front end limiting groove is equipped on the radar shield.The long-distance laser radar and radar shield mounting and positioning structure and mounting method of a kind of car in the application, in simple structure, can improve the positioning installation precision and consistency between long-distance laser radar and radar shield of car, improve cooperation precision, improve the perception quality of product appearance, with strong practicality and better application prospect.

Description

Technical Field

[0001] This invention belongs to the field of automotive technology, and more specifically, relates to an automotive long-range lidar and radar guard plate mounting and positioning structure and installation method. Background Technology

[0002] As consumers' demands for car quality gradually increase, their needs for intelligent vehicles are also growing. In response to these demands, the automotive industry, including both emerging new players and traditional automakers, has seen a surge in automation, intelligence, and technological advancements in recent years. Among these advancements, long-range LiDAR is increasingly being used in automobiles. Due to the inherent characteristics of long-range LiDAR (high temperatures during operation, angle requirements, vibration damping, etc.), its positioning accuracy and connection structure require extremely precise and reliable specifications.

[0003] In the traditional design and manufacturing process of automobiles, we usually deal with the positioning and assembly of rigid parts, and we only need to consider the control of the six degrees of freedom of this part. However, the long-range LiDAR that has been applied to automobiles in recent years is different. Because the LiDAR generates a high temperature of about 110 degrees Celsius during operation, this high temperature will deform the plastic parts that it is in contact with. Therefore, when designing, we need to not only consider that the parts need to be made of materials that can withstand the high temperature of 110 degrees Celsius, but also how to ensure the accuracy requirements of the gap and surface difference of the LiDAR guard plate under long-term high temperature. This is because the appearance of this part is a very sensitive area for consumers, which is easily visible and directly affects the perception of potential customers. In addition, because the LiDAR generates high temperatures, in order to ensure the service life of the product, a good heat dissipation space needs to be formed when connecting it to the vehicle. Since the LiDAR cannot be vibrated excessively, a shock absorption device and a soft connection are also required when connecting it to the vehicle body. This places high demands on the rationality and effectiveness of the installation and positioning structure design of this part.

[0004] Patent No. CN 108020823 A, published on May 11, 2018, entitled "LiDAR Bracket," includes a bracket body and a radar fixing structure, a radar transmitting and receiving harness isolation structure, and a radar transmitter dustproof structure mounted on the bracket body. The radar fixing structure includes a radar mounting hole on the bracket body, and Y-direction, Z-direction, and X-direction radar constraint surfaces extending from the periphery of the mounting hole towards the lower surface of the bracket body. The radar transmitting and receiving harness isolation structure is mounted on the bracket body. The radar transmitter dustproof structure is located around the radar mounting hole. This lidar bracket does not adequately meet the requirements for precise installation and positioning of long-range lidar. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art and provide a simple structure, ensuring installation accuracy and improving the appearance quality of the product, as well as a mounting and positioning structure and installation method for automotive long-range lidar and radar guard plate.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: the provided automotive long-range lidar and radar guard plate mounting and positioning structure is characterized in that: the lidar is positioned and mounted on the radar bracket, and the radar bracket is mounted on the radar guard plate; the outer edge of the lidar surface is provided with a front limiting groove, and the radar guard plate is provided with a positioning rib that cooperates and limits the positioning within the front limiting groove.

[0007] To make the above technical solutions more detailed and specific, the present invention also provides the following further preferred technical solutions to achieve satisfactory practical effects:

[0008] The front limiting groove is an annular limiting groove set along the edge contour of the lidar's outer surface, and the positioning rib is an annular positioning rib set on the back of the lidar cover and engaged with the front limiting groove.

[0009] The lidar includes a radar body, which has a radar main positioning hole and a radar secondary positioning hole; the radar bracket includes a bracket body, which has a bracket main positioning hole and a bracket secondary positioning hole respectively corresponding to the radar main positioning hole and the radar secondary positioning hole.

[0010] Both the radar main positioning hole and the bracket main positioning hole are circular holes; both the radar secondary positioning hole and the bracket secondary positioning hole are oblong holes.

[0011] The lidar is provided with a radar mounting hole, and the radar bracket is provided with radar mounting bolts corresponding to the radar mounting holes; the radar mounting bolts are provided with shock-absorbing and heat-insulating pads.

[0012] The radar bracket is provided with an installation limiting groove, and the radar protective plate is provided with a limiting pin corresponding to the installation limiting groove.

[0013] The mounting limiting groove is a U-shaped opening groove located on the upper edge of the radar bracket, and the radar bracket is provided with two spaced-apart mounting limiting grooves.

[0014] The radar bracket is provided with corresponding mounting holes for mounting onto the radar protective plate.

[0015] The installation method of the automotive long-range lidar and radar guard plate mounting and positioning structure involves assembling the lidar and radar bracket into a first assembly; then assembling the first assembly and radar guard plate together to form a second assembly; and finally assembling the second assembly onto the vehicle body sheet metal.

[0016] Position the positioning holes of the lidar and the lidar bracket onto the tooling, and install the lidar onto the lidar bracket using lidar mounting bolts to form the first assembly; position the mounting limiting groove on the lidar bracket with the limiting pin on the lidar guard plate, and engage the positioning rib on the lidar guard plate with the front limiting groove of the lidar, and use mounting screws to install and fix the first assembly onto the lidar guard plate to form the second assembly; use mounting screws to install and fix the second assembly onto the vehicle body sheet metal.

[0017] Compared with the prior art, the present invention has the following advantages: The present invention provides an automotive long-range lidar and radar guard plate mounting and positioning structure and installation method, which is simple in structure, can improve the positioning and installation accuracy and consistency between the automotive long-range lidar and radar guard plate, improve the fitting accuracy, and improve the perceived quality of the product appearance, and has strong practicality and good application prospects. Attached Figure Description

[0018] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:

[0019] Figure 1 This is a schematic diagram of the lidar structure in this invention;

[0020] Figure 2 This is a schematic diagram of the side structure of the lidar in this invention;

[0021] Figure 3 This is a schematic diagram of the radar support structure in this invention;

[0022] Figure 4 This is a schematic diagram of the radar support structure in this invention;

[0023] Figure 5 This is a schematic diagram of the first assembly structure for mounting the lidar and the radar bracket in this invention;

[0024] Figure 6 This is a schematic diagram of the radar shield structure in this invention;

[0025] Figure 7 This is a schematic diagram of the second assembly structure in this invention;

[0026] Figure 8 This is a schematic diagram of the cross-sectional structure after installation in this invention.

[0027] The markings in the diagram are as follows: 100, LiDAR; 101, LiDAR body; 102, LiDAR main positioning hole; 103, LiDAR secondary positioning hole; 104, LiDAR mounting hole; 105, front limiting groove.

[0028] 200. Radar bracket; 201. Bracket body; 202. Main positioning hole of the bracket; 203. Secondary positioning hole of the bracket; 204. Radar mounting bolt; 205. Mounting limit groove; 206. Protective plate mounting hole; 207. Bracket body fastening point;

[0029] 300. Radar guard plate; 301. Positioning rib;

[0030] 400. Body panel repair. Detailed Implementation

[0031] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0032] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0033] This invention relates to a mounting and positioning structure for a long-range automotive lidar and a radar guard plate, such as... Figure 2 , 8 As shown, the lidar 100 is positioned and mounted on the lidar bracket 200, which is mounted on the lidar guard plate 300. The lidar 100 has a front-end limiting groove 105 on its outer edge, and the lidar guard plate 300 has a positioning rib 301 that cooperates and limits the positioning within the front-end limiting groove 105. This structural arrangement, through the lidar bracket 200, mounts the lidar 100 and the lidar guard plate 300 into a single assembly, which is then fixedly mounted onto the vehicle body sheet metal 400. The front-end limiting groove 105 and the positioning rib 301 create a "handshake structure" between the long-range lidar 100 and the lidar guard plate 300. This effectively positions the long-range lidar relative to the lidar guard plate while also preventing deformation of the lidar guard plate 300 due to high temperatures generated during lidar operation, thereby improving matching accuracy.

[0034] In this invention, such as Figure 2 , 8As shown, the front limiting groove 105 is an annular limiting groove provided along the edge contour of the outer surface of the lidar 100, and the positioning rib 301 is an annular positioning rib provided on the back of the lidar cover 300 and engaged with the front limiting groove 105. During installation, the lidar 100 and the lidar cover 300 are matched and limited by the annular limiting groove and the positioning rib, which can effectively prevent deformation of the lidar cover 300 when high temperatures are generated during operation, improve the overall matching accuracy, and improve the appearance.

[0035] In this invention, such as Figure 1 , 3 As shown in Figure 4, the lidar 100 includes a lidar body 101, which has a main lidar positioning hole 102 and a secondary lidar positioning hole 103. The lidar bracket 200 includes a bracket body 201, which has a main lidar positioning hole 202 and a secondary lidar positioning hole 203 respectively corresponding to the main lidar positioning hole 102 and the secondary lidar positioning hole 103. During installation, both the lidar 100 and the lidar bracket 200 are positioned onto corresponding positioning fixtures through the main and secondary positioning holes. After the two parts are positioned on the fixtures, they are secured at four mounting points, i.e., fixed into the lidar mounting holes 104 by lidar mounting bolts 204, forming the first assembly.

[0036] In this invention, both the radar main positioning hole 102 and the bracket main positioning hole 202 are circular holes; both the radar secondary positioning hole 103 and the bracket secondary positioning hole 203 are oblong holes. The radar main positioning hole 102 positions the long-range lidar in the X and Y directions, and the radar secondary positioning hole 103 positions the lidar's rotation direction; the bracket main positioning hole 202 positions the radar mounting bracket in the X and Y directions, and the bracket secondary positioning hole 203 positions the lidar mounting bracket's rotation direction. After the lidar 100 and the radar bracket 200 are stably positioned, the four mounting points are tightened to complete the installation of the first assembly, as shown below. Figure 5 As shown in the image.

[0037] In this invention, such as Figure 1 , 3 As shown in Figure 4, the lidar 100 is provided with a lidar mounting hole 104, and the lidar bracket 200 is provided with a lidar mounting bolt 204 corresponding to the lidar mounting hole 104; the lidar mounting bolt 204 is provided with a shock-absorbing and heat-insulating pad. After positioning, the lidar is installed into the lidar mounting hole 104 using the lidar mounting bolt 204. The shock-absorbing and heat-insulating pad with shock-absorbing and heat-insulating effects on the lidar mounting bolt 204 increases the heat dissipation space of the long-range lidar and enhances the shock absorption effect.

[0038] In this invention, such as Figure 3 , 4As shown, the radar bracket 200 is provided with a mounting limiting groove 205, and the radar guard plate 300 is provided with a limiting pin corresponding to the mounting limiting groove 205. The mounting limiting groove 205 is a U-shaped opening groove located on the upper edge of the radar bracket, and the radar bracket 200 is provided with two spaced-apart mounting limiting grooves 205. The mounting limiting groove 205 and the limiting pin form an X-direction limiting. The radar bracket 200 is provided with two X-direction U-shaped slots corresponding to the two limiting pins on the radar guard plate 300 for X-direction positioning. The Y-direction and Z-direction positioning adopts a front end limiting groove 105 and positioning rib 301 around the gap surface of the radar guard plate 300 of the lidar 100 and a structure forming a "handshake structure". This structure can achieve positioning while effectively avoiding deformation of the radar guard plate caused by high temperature during operation, thereby improving matching accuracy.

[0039] In this invention, the radar bracket 200 is provided with corresponding mounting holes 206 for mounting onto the radar cover plate 300. By passing mounting screws through the mounting holes 206 on the radar bracket, the first assembly is installed and fixed into the corresponding mounting holes on the radar cover plate 300, forming the second assembly.

[0040] In this invention, the installation method of the automotive long-range lidar and radar guard plate mounting and positioning structure involves positioning and assembling the lidar 100 and the radar bracket 200 into a first assembly; then assembling the first assembly and the radar guard plate 300 together to form a second assembly; and finally assembling the second assembly onto the vehicle body sheet metal 400.

[0041] Specifically, the positioning holes of the lidar 100 and the lidar bracket 200 are positioned on the tooling, and the lidar 100 is installed onto the lidar bracket 200 using lidar mounting bolts 204, forming the first assembly; the mounting limiting groove 205 on the lidar bracket 200 is positioned with the limiting pin on the lidar guard plate 300, and the positioning rib 301 on the lidar guard plate 300 is limited and engaged into the front limiting groove 105 of the lidar 100, and the first assembly is installed and fixed onto the lidar guard plate 300 using mounting screws, forming the second assembly; the second assembly is installed and fixed onto the vehicle body sheet metal using mounting screws. The lidar bracket 200 is provided with three bracket body fastening points 207 arranged in a triangular pattern, which are correspondingly installed onto the vehicle body, providing good installation stability.

[0042] This invention provides a positioning and mating structure for a long-range LiDAR and radar guard plate in an automotive system. The long-range LiDAR 100 is connected to the radar guard plate 300 and the vehicle body via a radar bracket 200. Specifically, the long-range LiDAR is first installed on the radar bracket 200, then connected as an assembly to the radar guard plate 300, and finally connected as an assembly to the vehicle body. The long-range LiDAR and radar bracket are secured by two positioning pins and four mounting bolts (with shock-absorbing and heat-insulating pads to increase the heat dissipation space and vibration damping effect of the long-range LiDAR). The radar bracket and radar guard plate are connected in the X-direction using a slot and positioning pin engagement. The bracket is designed with two X-direction... The U-shaped slot corresponds to the two limiting pins on the protective plate for positioning in the X direction; the Y and Z directions are positioned by a ring of positioning ribs on the radar protective plate of the long-range lidar, forming a "handshake structure" between the long-range lidar and the radar protective plate. This can effectively position the long-range lidar relative to the protective plate, while also effectively preventing deformation of the radar protective plate when the long-range lidar generates high temperatures during operation, thereby improving matching accuracy. Finally, the assembly consisting of lidar 100, radar bracket 200 and radar protective plate 300 is connected to the body sheet metal 400 by three studs, which only secure but do not position, making installation convenient.

[0043] This mechanism is designed primarily to meet the operational requirements of long-range lidar, addressing the impact of high-temperature heat dissipation and vibrations during operation on its accuracy. This handshake structure effectively controls the misfitting precision caused by lidar plate deformation due to high temperatures during operation, as well as the consistency of the matching state caused by lidar plate deformation and subsequent shrinkage after cooling. This handshake structure effectively resolves positional deviations due to different deformations of the lidar plate during high temperatures and cooling. When the lidar plate deforms, the handshake structure pulls the material edge of its contour, improving the consistency of its appearance fit.

[0044] The automotive long-range lidar and lidar guard plate positioning and mating structure assembles the lidar 100 and lidar mounting bracket onto the positioning fixture for installation and securing. The long-range lidar is designed with two positioning holes, one round hole and one oblong hole. The round hole positions the long-range lidar in the X and Y directions, and the oblong hole positions the rotation direction of the long-range lidar. The lidar bracket also has two corresponding positioning holes, one round hole and one oblong hole. The round hole positions the lidar mounting bracket in the X and Y directions, and the oblong hole positions the lidar mounting bracket in the rotation direction. After the two parts are positioned on the fixture, four mounting points are secured.

[0045] After the lidar 100 and the lidar bracket 200 are positioned and assembled, they form the first assembly. The first assembly is then assembled with the lidar protective plate 300. In the X-axis direction, the bracket notch engages with a limiting pin on the lidar protective plate 300 for control, with two such engagements. In the Y and Z axes, the long-range lidar and the lidar protective plate are positioned using a "handshake structure," respectively. Figure 8 As shown in the diagram. Finally, at the three points connecting to the vehicle body, only securing is done, not positioning, to facilitate installation.

[0046] This invention discloses an installation and positioning structure and method for a long-range automotive lidar and a radar guard plate. The structure is simple, and it can improve the positioning and installation accuracy and consistency between the long-range automotive lidar and the radar guard plate, improve the fitting accuracy, and enhance the perceived quality of the product's appearance. It has strong practicality and good application prospects.

[0047] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] The present invention has been described above by way of example with reference to the accompanying drawings. However, the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention or any direct application to other situations shall fall within the protection scope of the present invention.

Claims

1. A mounting and positioning structure for a long-range automotive lidar and a lidar guard plate, characterized in that: The lidar is positioned and mounted on a lidar bracket, which is mounted on a lidar protective plate. The lidar's outer edge has a front-end limiting groove, and the lidar protective plate has a positioning rib that engages and limits the lidar within the front-end limiting groove. The front-end limiting groove is an annular groove along the contour of the lidar's outer edge, and the positioning rib is an annular positioning rib located on the back of the lidar protective plate and engaging with the front-end limiting groove. The lidar and the lidar protective plate are positioned by the annular limiting groove and the annular positioning rib, creating a gap between their mounting surfaces. This gap allows the lidar protective plate to undergo slight deformation relative to the lidar when the lidar generates high temperatures during operation, preventing direct contact and thermal deformation, while maintaining positioning accuracy between them. The lidar bracket... The radar bracket has a mounting groove, and the radar guard plate has a limiting pin corresponding to the mounting groove. The mounting groove is a U-shaped opening groove located on the upper edge of the radar bracket, and the radar bracket has two spaced-apart mounting grooves. The lidar includes a radar body, which has a main radar positioning hole and a secondary radar positioning hole. The radar bracket includes a bracket body, which has a main bracket positioning hole and a secondary bracket positioning hole corresponding to the main radar positioning hole and the secondary radar positioning hole, respectively. The main radar positioning hole and the main bracket positioning hole are both circular holes. The secondary radar positioning hole and the secondary bracket positioning hole are both oblong holes. The lidar has a radar mounting hole, and the radar bracket has a radar mounting bolt corresponding to the radar mounting hole. The radar mounting bolt has a shock-absorbing and heat-insulating pad.

2. The automotive long-range lidar and radar guard plate mounting and positioning structure according to claim 1, characterized in that: The radar bracket is provided with corresponding mounting holes for mounting onto the radar protective plate.

3. The installation method of the automotive long-range lidar and radar guard plate mounting and positioning structure as described in any one of claims 1 to 2, characterized in that: The lidar and radar bracket are positioned and assembled into the first assembly; then the first assembly and radar guard plate are assembled together to form the second assembly; and finally the second assembly is assembled onto the body sheet metal.

4. The installation method of the automotive long-range lidar according to claim 3, characterized in that: Position the positioning holes of the lidar and the lidar bracket onto the tooling, and install the lidar onto the lidar bracket using lidar mounting bolts to form the first assembly; position the mounting limiting groove on the lidar bracket with the limiting pin on the lidar guard plate, and engage the positioning rib on the lidar guard plate with the front limiting groove of the lidar, so that the gap is formed between the annular positioning rib of the lidar guard plate and the annular limiting groove of the lidar; and use mounting screws to install and fix the first assembly onto the lidar guard plate to form the second assembly; use mounting screws to install and fix the second assembly onto the body sheet metal.

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