Vehicle-mounted distance detection device

Abstract

The present invention provides a vehicle-mounted distance detection device, the technical solution of which is as follows: the vehicle-mounted distance detection device includes a shell and a distance detection component, the shell includes a mounting shell and a housing shell built into the mounting shell, the distance detection component is fixedly mounted in the housing shell, and the housing shell is rotatably connected to the mounting shell so that the distance detection direction of the distance detection component can be adjusted with the rotation of the housing shell. A combined structure of a housing shell and a mounting shell arranged inside and outside is adopted, the housing shell is rotatably connected to the mounting shell, and the detection angle of the internal distance detection component can be changed by rotating the housing shell, without the need for an external adjustment bracket, and the calibration of the detection angle can be achieved through its own structure, the adjustment is convenient and quick, and the consistency of the installation with the vehicle body is maintained at the same time, so that the vehicle-mounted distance detection device is more miniaturized and the aesthetics of the vehicle appearance is improved.

Description

Technical Field

[0001] The invention relates to the field of vehicle-mounted electronic equipment, and in particular to a vehicle-mounted distance detection device. Background Art

[0002] Vehicle-mounted detection equipment such as millimeter-wave radar is generally installed on the front bumper. The detection distance of the millimeter-wave radar is long, and the detection accuracy is required to be high. Therefore, when it is installed on the body, it is necessary to ensure that the normal direction of the millimeter-wave radar is parallel to the straight direction of the body, so that the millimeter-wave radar can accurately detect obstacles in front and provide safety warnings. Since the front bumper is generally in an arc shape, it is difficult for the millimeter-wave radar to directly achieve the normal direction parallel to the body direction after installation, and the millimeter-wave radar needs to be adjusted. The existing millimeter-wave radar needs an external adjustment bracket during installation, and the adjustment bracket is installed on the body, and then the millimeter-wave radar is installed on the adjustment bracket. The millimeter-wave radar is placed in the optimal angle position by rotating the adjustment bracket. However, this adjustment structure has the problem of complex installation structure and large space occupation, which affects the overall aesthetics of the car. Summary of the invention

[0003] The object of the present invention is to provide a vehicle-mounted distance detection device which is miniaturized and more convenient to install and adjust.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] A vehicle-mounted distance detection device comprises a shell and a distance detection component, wherein the shell comprises a mounting shell and a containing shell built into the mounting shell, the distance detection component is fixedly mounted in the containing shell, and the containing shell is rotatably connected to the mounting shell so that the distance detection direction of the distance detection component can be adjusted as the containing shell rotates.

[0006] It is further configured that the accommodating shell is spherical, and a movable space is defined in the mounting shell for the accommodating shell to deflect around its spherical center to a certain angle within a preset range.

[0007] It is further configured that the shell includes a connecting sleeve elastically clamped between the mounting shell and the containing shell and providing damping for the containing shell, and a bottom cover covering the bottom of the mounting shell, wherein the bottom cover and the connecting sleeve together define the activity space.

[0008] Further configuration: a guide protrusion is protruding from the outer wall of the containing shell, a guide groove for the guide protrusion to be embedded in the mounting shell is provided, and a clearance groove for the guide protrusion to pass through is opened on the connecting sleeve, the guide protrusion can slide along the guide groove to allow the containing shell to be horizontally rotated and adjusted, and the guide protrusion is hemispherical so that the containing shell can be rotated up and down around the guide protrusion.

[0009] It is further configured that a snap-fit ​​structure is provided between the bottom cover and the mounting shell to enable the two to be snap-connected and fixed, the snap-fit ​​structure includes a hook and a hole for the hook to be snap-fitted and fixed, the mounting shell and the bottom cover are respectively provided with a first mounting hole and a second mounting hole, and the bottom cover is fixed to the mounting shell by means of fasteners passing through the first mounting hole and the second mounting hole.

[0010] It is further configured that the shell can be inserted into a preset hole opened on the vehicle body, the outer wall of the mounting shell protrudes to form a limiting portion that can be clamped in a limiting hole on the vehicle body connected to the preset hole, and the first mounting hole is opened in one end of the limiting portion close to the bottom cover.

[0011] Further arrangement: the shell can pass through a preset hole on the vehicle body and be installed and fixed to the preset hole, and a first limit member and a second limit member are provided on the outer wall of the shell along its installation direction, which can be respectively clamped on both sides of the preset hole, and the second limit member can be elastically deformed to pass through the preset hole and press against the inner surface of the vehicle body near the installation hole.

[0012] It is further configured that the second limiting member is protrudingly disposed on the outer side wall of the connecting sleeve, and a positioning hole for the second limiting member to pass through is opened on the mounting shell.

[0013] It is further configured that the distance detection component includes a circuit board assembly and a detection chip, the circuit board assembly includes a circuit board arranged in parallel along the central axis direction of the containing shell, the outer periphery of the circuit board is adapted to be installed with the inner wall of the containing shell, and the detection chip is installed on the circuit board near the top of the shell.

[0014] It is further configured that the containing shell includes a front containing shell and a rear containing shell that are interlocked with each other, a connecting piece is provided between two adjacent circuit boards to fix the two to each other and form a space therebetween, and a supporting column is extended from the inner wall of the rear containing shell to support the circuit board assembly and make the circuit board abut against the inner wall of the front containing shell.

[0015] It is further provided that: a potting glue is filled in the containing shell and filled between the circuit board and the inner wall of the containing shell, and a flat structure is provided on the outer periphery of the circuit board for the potting glue to flow in and form a sealed connection.

[0016] Further configuration: the vehicle-mounted distance detection device also includes a cable connected to the containing shell, the containing shell is provided with a threading hole for the cable to pass through, the cable includes a cable body and a clamping portion arranged on the outer wall of the cable body and clamped and fixed to the shell, the clamping portion includes two clamping plates respectively clamped on the inner and outer sides of the shell near the threading hole.

[0017] It is further configured that the cable is rotatably connected to the containing shell, the threading hole extends radially outward to form an avoidance hole for the clamping plate to pass through, and the cable can be rotated after one of the clamping plates passes through the avoidance hole to be clamped and fixed on the containing shell.

[0018] It is further configured that the front end of the accommodating shell is provided with a mounting end surface for mounting the light source auxiliary calibration device, the central axis of the mounting end surface is parallel to the normal direction of the distance detection component, and the mounting end surface is provided with a clamping portion that can be clamped and fixed with the light source auxiliary calibration device.

[0019] It is further provided that: the clamping portion includes a clamping groove which is opened on the installation end surface and can be used for the light source auxiliary calibration device to be hooked and fixed.

[0020] Further configuration: the shell also includes a surface cover detachably connected to the end of the mounting shell exposed outside the vehicle body, the surface cover is provided with an elastic foot on one side close to the mounting shell, and the mounting shell is provided with a mounting groove for the elastic foot to be hooked and fixed.

[0021] It is further configured that the outer diameter of the shell is less than 2.8 cm.

[0022] Further configuration: the vehicle-mounted distance detection device is a millimeter wave radar circuit, and the distance detection component includes a millimeter wave radio frequency chip for transmitting and receiving millimeter wave radar signals.

[0023] Compared with the prior art, the solution of the present invention has the following advantages:

[0024] 1. In the vehicle-mounted distance detection device involved in the present invention, a combined structure of a containing shell and a mounting shell arranged inside and outside is adopted. The containing shell is spherical and is rotatably connected to the mounting shell. The orientation (i.e., the detection angle) of the internal distance detection component can be changed by rotating the containing shell. No external adjustment bracket is required. The detection angle can be calibrated through its own structure. The adjustment is convenient and quick. At the same time, the consistency of the installation with the vehicle body is maintained, so that the vehicle-mounted distance detection device such as the millimeter wave radar is more miniaturized and the aesthetics of the entire vehicle appearance is improved.

[0025] 2. In the vehicle-mounted distance detection device involved in the present invention, a multi-layer circuit board layout structure is adopted in a spherical containing shell, and a smaller detection chip is adopted and installed on the circuit board closest to the outside of the vehicle body to improve its detection accuracy. In addition, the remaining electrical components are installed on the remaining circuit boards, and the installation positions of the detection chips and electrical components are reasonably allocated. The detection chips and electrical components are transformed from a planar arrangement to a spatial three-dimensional arrangement, which reduces the diameter of the containing shell, makes the vehicle-mounted distance detection device more miniaturized, and can reduce the holes opened in the vehicle body, further improving the aesthetics of the entire vehicle appearance.

[0026] 3. In the vehicle-mounted distance detection device involved in the present invention, the containing shell, connecting sleeve, mounting shell, top cover and bottom cover are all made of heat-conducting materials, and the mounting shell, containing shell, connecting sleeve, top cover and bottom cover are tightly connected and reasonably distributed, so that the millimeter-wave radar is more miniaturized and has better heat dissipation performance, ensuring that the detection chip works at a normal temperature and improving its detection accuracy. Since the containing shell, connecting sleeve, containing shell and bottom cover are tightly connected to each other and are in close contact with each other, most of the heat conduction process of the containing shell to the outside is transferred through the heat-conducting material, and the heat conduction speed is faster than the heat conduction through the air between the gaps, so that the millimeter-wave radar has both miniaturization and good heat dissipation performance.

[0027] 4. In the vehicle-mounted distance detection device involved in the present invention, the bottom cover and the mounting shell are connected and fixed at three points by two snap structures and a fastener. On the premise that the vehicle-mounted distance detection device realizes a miniaturized structure, the structure remains stable and firm, while reducing the difficulty of assembly and improving the assembly efficiency. In addition, a limiting portion is protruding on the outer wall of the mounting shell. While the limiting portion provides an installation guide for the vehicle-mounted distance detection device, it also provides an installation space for the fastener, making the overall structure more streamlined, which is conducive to the miniaturization of the vehicle-mounted distance detection device.

[0028] 5. In the vehicle-mounted distance detection device involved in the present invention, a snap-in groove is provided on the mounting end surface of the front end of the containing shell, so that the light source auxiliary calibration device can be assembled with the vehicle-mounted distance detection device more quickly. Since the vehicle-mounted distance detection device can calibrate the detection direction by rotating the containing shell, the light source auxiliary calibration device is directly connected to the containing shell, which is convenient and quick to adjust and also improves the accuracy of the calibration.

[0029] 6. In the vehicle-mounted distance detection device involved in the present invention, the cover is detachably connected to the mounting shell, and the cover and the mounting shell are assembled according to the paint color of the vehicle body. Since only the cover is exposed after the millimeter-wave radar is installed on the vehicle body, the concealment of the millimeter-wave radar can be greatly improved, and the overall aesthetics of the vehicle body can be enhanced. In addition to the cover, the other parts of the millimeter-wave radar can be mass-produced, and the production cost is greatly reduced.

[0030] 7. In the vehicle-mounted distance detection device involved in the present invention, a clamping portion is provided on the outer wall of the cable to connect with the containing shell, thereby improving the connection strength between the cable and the containing shell, preventing the cable from loosening from the circuit board when being pulled, and improving the electrical safety of the vehicle-mounted distance detection device.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description, which will become obvious from the following description, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0033] Figure 1 A schematic diagram of the structure of a vehicle-mounted distance detection device according to an embodiment of the present invention;

[0034] Figure 2 A schematic diagram of a vehicle-mounted distance detection device from another perspective in an embodiment of the present invention;

[0035] Figure 3 It is an exploded schematic diagram of a vehicle-mounted distance detection device according to an embodiment of the present invention;

[0036] Figure 4 A cross-sectional view of a vehicle-mounted distance detection device according to an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the assembly structure of a mounting shell and a connecting sleeve in one embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the connection structure between a cable and a containing shell in one embodiment of the present invention;

[0039] Figure 7 The figure is a schematic diagram of the assembly of a vehicle-mounted distance detection device, a light source auxiliary calibration device and a vehicle body in one embodiment of the present invention. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0041] like Figures 1 to 4 As shown, the present invention provides a vehicle-mounted electronic device, specifically a vehicle-mounted distance detection device 1. In this embodiment, the vehicle-mounted distance detection device 1 is a front collision warning sensor, specifically a millimeter wave radar, which is used to detect the front vehicle or obstacle and provide a safety warning for the driver. In other embodiments, the vehicle-mounted distance detection device 1 can also be a reversing radar or a camera device.

[0042] In this embodiment, the vehicle-mounted distance detection device 1 includes a shell 11 and a distance detection component 12 installed in the shell 11, the shell 11 includes a mounting shell 111 and a containing shell 112, the mounting shell 111 is used to be mounted and fixed to the vehicle body, the distance detection component 12 is mounted and fixed in the containing shell 112, and the containing shell 112 is rotatably connected to the mounting shell 111 so that the distance detection direction of the distance detection component 12 can be adjusted as the containing shell 112 rotates.

[0043] By installing the mounting shell 111 on the vehicle body 2 as a fixed part, using the accommodating shell 112 that can rotate relative to the mounting shell 111 as a movable part, and installing the distance detection component 12 in the accommodating shell 112, the angle of the distance detection component 12 relative to the vehicle body 2 can be changed by rotating the accommodating shell 112, thereby achieving an adjustable angle of the vehicle-mounted distance detection device 1, without the need for an external adjustment bracket, occupying less space, and making the appearance of the entire vehicle more beautiful.

[0044] In this embodiment, the housing shell 112 is spherical, and the mounting shell 111 defines a movable space for the housing shell 112 to deflect around its spherical center to a certain angle within a preset range. In other embodiments, the housing shell 112 may also be cylindrical. The spherical housing shell 112 is adopted. On the one hand, the housing shell 112 is adapted to the movable space to achieve adjustable rotation of the housing shell 112. On the other hand, the internal installation space of the mounting shell 111 is fully utilized, so that the internal structure of the housing 11 is more compact and the housing 11 is more miniaturized.

[0045] Furthermore, the housing 11 includes a connecting sleeve 113 that is elastically clamped between the mounting shell 111 and the containing shell 112 and provides a damping effect for the containing shell 112, and also includes a bottom cover 114 that covers the bottom of the mounting shell 111, and the bottom cover 114 and the connecting sleeve 113 jointly define the activity space. Specifically, the containing shell 112 includes an arc surface 1121, and the inner side wall of the connecting sleeve 113 is arranged in an arc shape and fits with the arc surface 1121, providing a higher damping effect for the containing shell 112.

[0046] Combination Figure 5As shown, further, a guide protrusion 1122 is protruding from the outer wall of the accommodating shell 112, a clearance groove 1131 is provided on the connecting sleeve 113 for the guide protrusion 1122 to pass through, and a guide groove 1119 is provided on the mounting shell 111 for the guide protrusion 1122 to be embedded in, and the guide protrusion 1122 can slide along the guide groove 1119 to adjust the horizontal rotation of the accommodating shell 112. In this embodiment, two guide protrusions 1122 are symmetrically provided on the outer wall of the accommodating shell 112, and two guide grooves 1119 are correspondingly provided on the mounting shell 111. In other embodiments, only one guide protrusion 1122 may be provided on the outer wall of the accommodating shell 112.

[0047] Furthermore, the guide protrusion 1122 is hemispherical so that the housing 112 can be adjusted by rotating up and down around the guide protrusion 1122. Since the distance detection component 12 of the millimeter wave radar has directionality, the matching structure of the hemispherical guide protrusion 1122 and the guide groove 1119 on the mounting shell 111 is provided to limit the rotation direction of the distance detection component 12 installed in the housing 112, so that it can only swing left and right and up and down. When adjusting and calibrating the detection angle of the millimeter wave radar, since only the angles in two directions need to be adjusted, the adjustment efficiency is higher, and the accuracy of the installation direction of the millimeter wave radar can be greatly guaranteed, reducing the detection error.

[0048] In this embodiment, the housing shell 112 includes a front housing shell 1123 and a rear housing shell 1124, and the front housing shell 1123 and the rear housing shell 1124 are both hemispherical and are fixed to each other. The distance detection component 12 includes a circuit board assembly and a detection chip 121. The circuit board assembly includes a plurality of circuit boards 122 arranged in parallel along the central axis of the housing shell 112, and the thickness direction of the circuit board 122 is the same as the direction of the central axis. The circuit board assembly is installed in the front housing shell 1123 and is adapted to the inner wall of the front housing shell 1123. Specifically, the sizes of the plurality of circuit boards 122 are different, and the size of each circuit board 122 corresponds to the diameter of the circular cross section in which it is located. The detection chip 121 is installed on the circuit board 122 away from the rear housing shell 1124, and the detection chip 121 is specifically a millimeter wave radio frequency chip. The detection chip 121 uses a new type of chip with a length and width of 1.22 cm, and the diameter of the housing 11 can reach less than 2.8 cm.

[0049] Since the housing shell 112 is spherical, the installation space in the housing shell 112 is also spherical. By adopting a structure in which the multi-layer circuit boards 122 are arranged in parallel, on the one hand, the movable space in the housing shell 112 can be better utilized, so that the detection chip 121 and the remaining electrical components can be arranged on different circuit boards 122 respectively, without being integrated on the same circuit board 122, which can greatly reduce the size of the housing shell 112, thereby making the millimeter wave radar more miniaturized. On the other hand, since the housing shell 112 is spherical, by arranging the detection chip 121 on the smallest circuit board 122, the size of the circuit board 122 is similar to that of the detection chip 121, the distance between the detection chip 121 and the front end of the front housing shell 1123 can be shortened, the signal shielding effect on the detection chip 121 can be reduced, and the detection accuracy of the vehicle-mounted distance detection device 1 can be improved.

[0050] In this embodiment, the circuit board assembly includes two circuit boards 122. In other embodiments, more than two circuit boards 122 may be provided according to actual needs. A connecting piece 123 is provided between the two circuit boards 122 to fix the two circuit boards to each other and form a space between the two circuit boards. Specifically, the connecting piece 123 is a heat-conducting metal piece. In this embodiment, the connecting piece 123 is made of brass.

[0051] The connecting piece 123 is supported between the two circuit boards 122 to support and fix the two circuit boards 122, and a gap is formed between the circuit boards 122, which can provide installation space for the electrical components on the circuit boards 122 to prevent the electrical components from being squeezed and damaged. In addition, the gap formed between the two circuit boards 122 also provides a larger heat dissipation space for the detection chip 121. In addition, the connecting piece 123 adopts a heat-conducting metal sheet, which speeds up the heat conduction and heat dissipation of the detection chip 121, maintains the stability of the working temperature of the detection chip 121, and improves the detection accuracy.

[0052] Furthermore, the connecting piece 123 includes a supporting portion 1231 supported between two adjacent circuit boards 122, and a bending portion 1232 connected to both ends of the supporting portion 1231 and capable of bending and deforming. The circuit board 122 is provided with a through hole 1221 through which the bending portion 1232 can pass. The connecting piece 123 passes through the through hole 1221 with the aid of the bending portion 1232 and is then buckled and placed on the circuit board 122, thereby connecting and fixing the two circuit boards 122. Specifically, the bending portion 1232 passes through the through hole 1221 and is bent, and can be welded and fixed to the circuit board 122, so as to improve the connection stability between the connecting piece 123 and the circuit board 122.

[0053] Furthermore, the bending portion 1232 is provided with a weakened notch 12321 to facilitate bending. Preferably, the weakened notches 12321 on the two bending portions 1232 are oriented in opposite directions.

[0054] Furthermore, the inner wall of the rear housing shell 1124 is extended with supporting columns 11241 for supporting the circuit board assembly and making the circuit board 122 abut against the inner wall of the front housing shell 1123. In this embodiment, four supporting columns 11241 are provided, which are integrally formed with the rear housing shell 1124 and abut against the circuit board 122 near the rear housing shell 1124.

[0055] Furthermore, the front housing shell 1123 may be provided with a limiting groove 11231 for the circuit board 122 on which the detection chip 121 is installed to be embedded. By providing the limiting groove 11231, the contact area between the circuit board 122 and the inner wall of the front housing shell 1123 is increased, and the contact surface is flatter, so that the installation of the circuit board 122 is more stable and less likely to slide. In addition, since the overall volume of the housing 11 is relatively small in this embodiment, the requirement for heat dissipation is relatively high. By increasing the contact area between the circuit board 122 and the housing shell 112, the heat on the detection chip 121 can be conducted outward more quickly, thereby reducing the operating temperature of the detection chip 121.

[0056] Furthermore, the front housing shell 1123 and the rear housing shell 1124 are respectively provided with a first fastening hole 11232 and a second fastening hole 11242, and the rear housing shell 1124 is fixed to the front housing shell 1123 by means of fasteners passing through the first fastening hole 11232 and the second fastening hole 11242. Specifically, the inner wall of the front housing shell 1123 protrudes to form a mounting post 11233, the mounting post 11233 is provided with the first fastening hole 11232, and the circuit board 122 is provided with an avoidance notch 1222 for the mounting post 11233 to pass through. In this embodiment, two mounting posts 11233 are formed on the inner wall of the front housing shell 1123, and the two mounting posts 11233 are arranged symmetrically relative to the housing shell 112.

[0057] By protruding from the inner wall of the front housing shell 1123 to form a mounting column 11233, the mounting column 11233 can be stuck in the avoidance gap 1222 on the circuit board 122, thereby providing circumferential limit for the circuit board 122, and a first fastening hole 11232 is also provided in the mounting column 11233 for screws to penetrate, so that the front housing shell 1123 and the rear housing shell 1124 are buckled and fixed, making full use of the space of the housing shell 112, and the structural distribution is more reasonable, making the millimeter wave radar more miniaturized. In addition, in this embodiment, the inner wall of the front housing shell 1123 is also protruding with an anti-fool bone (not shown in the figure), which cooperates with the circuit board 122, so as to prevent the circuit board 122 from being installed in reverse during installation, and ensure the accuracy of the installation direction of the detection chip 121.

[0058] Furthermore, the end surface of the rear housing shell 1124 protrudes along its circumference to form a positioning protruding ring 11243 that abuts against the inner wall of the front housing shell 1123. The positioning protruding ring 11243 not only increases the contact area between the rear housing shell 1124 and the front housing shell 1123, making the connection between the two more stable, but also provides a positioning function when the two are buckled together, making the buckling installation of the two more convenient and quick.

[0059] In this embodiment, the housing 112 is filled with potting glue, and the potting glue can be filled between the circuit board 122 and the inner wall of the housing 112. Furthermore, the edge of the circuit board 122 is provided with a flat structure 1223 for the potting glue to flow in and form a sealed connection. Specifically, the potting glue is made of thermal conductive material.

[0060] On the one hand, the potting glue is poured into the containment shell 112 to form a sealed protection for the electrical components on the circuit board 122 and the detection chip 121, and play a moisture-proof role. On the other hand, the potting glue is made of heat-conducting material, and the potting glue is filled in the containment shell 112, fully in contact with the circuit board 122 and the inner wall of the containment shell 112, forming a good heat-conducting medium, and quickly conducting the heat generated on the circuit board 122 to the containment shell 112, so as to achieve a rapid cooling effect. On the third hand, the potting glue can have a certain bonding and fixing effect on the circuit board 122. By setting a flat structure 1223 at the edge of the circuit board 122, the potting glue can flow into the flat structure 1223, thereby increasing the contact area with the circuit board 122, and further improving the bonding and fixing effect between the circuit board 122 and the inner wall of the containment shell 112. In this embodiment, the potting glue is relatively viscous, and the gap between the flat structure 1223 on the circuit board 122 close to the rear containing shell 1124 is larger, allowing the potting glue to flow through, while the gap between the flat structure 1223 on the circuit board 122 on which the detection chip 121 is installed and the containing shell 112 is smaller, and the circuit board 122 is flush with the limiting groove 11231. The potting glue cannot flow to the side of the circuit board 122 on which the detection chip 121 is installed, and will not affect the detection of the detection chip 121.

[0061] Combination Figure 7As shown, in this embodiment, the installation method of the vehicle-mounted distance detection device 1 is to open a preset hole 21 on the vehicle body 2, and the shell 11 can pass through the preset hole 21 and be installed and fixed thereto. The outer wall of the shell 11 is provided with a first limiter and a second limiter 1132 along its installation direction, which can be respectively clamped on both sides of the preset hole 21. Specifically, the first limiter is a limit flange 1111 protrudingly provided on the shell 11, and the second limiter 1132 can be elastically deformed to pass through the preset hole 21 and abut against the inner surface of the vehicle body near the installation hole. In this embodiment, there are four second limiters 1132 symmetrically along the center of the shell 11, and both ends of the second limiter 1132 are provided with guide surfaces that make it easy to insert or disengage from the preset hole 21.

[0062] When installing the millimeter-wave radar, a preset hole 21 is opened on the vehicle body 2, and the millimeter-wave radar is inserted into the preset hole 21. The second limit member 1132 can be elastically deformed and pass through the preset hole 21, and then the millimeter-wave radar is fixed in the preset hole 21 by the clamping effect of the first limit member and the second limit member. With this installation method, there is no need to remove the car bumper, and the installation is more convenient and quick.

[0063] In this embodiment, the limiting flange 1111 is integrally formed on the front end outer wall of the installation shell 111, the second limiting member 1132 is integrally formed on the outer side wall of the connecting sleeve 113, and the installation shell 111 is provided with a positioning hole 1112 for the second limiting member 1132 to pass through. Specifically, the installation shell 111 is made of a hard material, and the connecting sleeve 113 is made of a soft elastic material.

[0064] Since the mounting shell 111 is arranged at the outermost layer of the millimeter wave radar, the structural strength requirement is relatively high, and the use of hard materials can better protect the internal structure from damage, while the connection sleeve 113 uses soft elastic materials to provide a greater damping effect for the containing shell 112, and also improve the tightness of the overall structure. The second stopper 1132 is integrally formed on the connection sleeve 113, which can meet the elasticity requirements of the second stopper 1132, and can greatly reduce the difficulty of processing, reduce the consumption of materials, and make the overall structure more streamlined.

[0065] Furthermore, the inner wall of the mounting shell 111 near its front end protrudes to form a limiting step 1113 that can provide installation limiting for the connecting sleeve 113. In addition, the limiting step 1113 can also provide rotation limiting for the accommodating shell 112, providing a stroke limit for the angle adjustment of the accommodating shell 112.

[0066] Furthermore, a clamping ridge 1114 is protruded from the outer wall of the mounting shell 111, and the clamping ridge 1114 enables the mounting shell 111 to be pressed against the inner wall of the preset hole 21 when the mounting shell 111 is inserted into the preset hole 21, thereby improving the installation stability of the millimeter wave radar and the vehicle body.

[0067] Furthermore, a limiting portion 1115 is formed on the outer wall of the mounting shell 111 and can be clamped in a limiting hole 22 on the vehicle body 2 that is connected to the preset hole 21. By forming the limiting portion 1115 protruding from the outer wall of the mounting shell 111 and utilizing the cooperation between the limiting portion 1115 and the limiting hole 22 on the vehicle body 2, a directional guide is provided for the installation of the millimeter wave radar, thereby ensuring the accuracy of the detection direction of the detection chip 121.

[0068] Furthermore, a snap-fit ​​structure is provided between the bottom cover 114 and the mounting shell 111 for clamping and fixing the two, and the snap-fit ​​structure includes a hook 1141 and a hole 1116 for clamping and fixing the hook 1141, and a first mounting hole 1117 and a second mounting hole 1142 are provided on the mounting shell 111 and the bottom cover 114 respectively, and the bottom cover 114 is fixed to the mounting shell 111 by means of fasteners passing through the first mounting hole 1117 and the second mounting hole 1142, and the fasteners are screws.

[0069] In this embodiment, the hook 1141 is connected to the side of the bottom cover 114 close to the mounting shell 111, and the mounting shell 111 has a hole 1116 formed on the side wall. The hook 1141 extends into the inner side of the mounting shell 111 and is hooked and fixed in the hole 1116. In other embodiments, the hook 1141 may be provided on the mounting shell 111, and the hole 1116 may be provided on the bottom cover 114. By providing the hook 1141 on the bottom cover 114, after the bottom cover 114 and the mounting shell 111 are assembled, the hook 1141 is hidden inside the mounting shell 111, so that the outer surfaces of the bottom cover 114 and the mounting shell 111 are smoother and more beautiful.

[0070] In this embodiment, the clamping hole 1116 penetrates the outer surface of the mounting shell 111. With such a structural arrangement, when the operator assembles the bottom cover 114 and the mounting shell 111, it is easier to align the clamping hook 1141 and clamp it into the clamping hole 1116, thereby improving assembly efficiency.

[0071] In this embodiment, two of the hooks 1141 are provided on the bottom cover 114, while only one second mounting hole 1142 is provided. The hooks 1141 and the second mounting hole 1142 are centrally symmetrically distributed relative to the bottom cover 114, that is, the hooks 1141 and the second mounting hole 1142 together form a three-point fixing structure. In other embodiments, more than three hooks 1141 may be provided, and multiple second mounting holes 1142 may also be provided. Since the millimeter-wave radar is small in size, it is inconvenient to operate when installing fasteners such as screws. Therefore, in this embodiment, only one second mounting hole 1142 is provided, that is, only one screw and two hooks 1141 are required to realize the connection and fixation between the bottom cover 114 and the mounting shell 111, thereby improving the convenience of assembly and ensuring the connection strength between the two.

[0072] Preferably, the first mounting hole 1117 is defined in one end of the limiting portion 1115 close to the bottom cover 114 , a mounting portion 1143 is protruded from the side wall of the bottom cover 114 corresponding to the limiting portion 1115 , and the second mounting hole 1142 is defined in the mounting portion 1143 .

[0073] By opening the first mounting hole 1117 in the limiting portion 1115, the limiting portion 1115 not only provides a guide for the installation of the mounting shell 111, but also provides sufficient installation space for the installation of the screws. The structural design is more ingenious, which makes the wall thickness of the mounting shell 111 thinner, reduces the overall weight, and makes the overall size more compact.

[0074] Furthermore, the bottom cover 114 protrudes and extends from one side close to the mounting shell 111 to form a limit ring 1144 that abuts against the inner wall of the mounting shell 111, and the limit ring 1144 also abuts against the accommodating shell 112. The limit ring 1144 is provided with a deformation notch 11441 that can accommodate the hook 1141 and provide a deformation space for the hook 1141. A plurality of abutting blocks 11442 that abut against the inner wall of the mounting shell 111 are arranged at intervals on a side wall of the limit ring 1144 close to the mounting shell 111.

[0075] By providing the limiting ring 1144 on the bottom cover 114, the contact area between the bottom cover 114 and the mounting shell 111 is increased, and a positioning function is provided for the assembly of the bottom cover 114 and the mounting shell 111, making the assembly of the two more convenient and improving the assembly efficiency. In addition, the limiting ring 1144 abuts against the containing shell 112, increasing the contact area with the containing shell 112, improving the fastening effect of the containing shell 112, and also increasing the damping effect between the connecting sleeve 113 and the containing shell 112, preventing the containing shell 112 from rotating under non-human action, thereby affecting the detection effect.

[0076] Furthermore, a plurality of heat dissipation bosses 1145 are protruded from one side of the bottom cover 114 away from the mounting shell 111. The heat dissipation bosses 1145 increase the heat dissipation area on the surface of the bottom cover 114, making the heat dissipation speed of the bottom cover 114 faster, so that the millimeter wave radar is maintained at a normal operating temperature, and ensuring the detection accuracy of the detection chip 121.

[0077] Since the overall volume of the millimeter-wave radar in this embodiment is small, the heat dissipation area of ​​the shell 11 is small. In this embodiment, the connecting sleeve 113 is made of thermal conductive silicone, and the mounting shell 111, the containing shell 112 and the bottom cover 114 are all made of nylon 6.

[0078] The present invention adopts heat-conducting materials and reasonable distribution of the structures of the mounting shell 111, the containing shell 112, the connecting sleeve 113 and the bottom cover 114, so as to make the millimeter wave radar more miniaturized and have better heat dissipation performance, ensure that the detection chip 121 works at a normal temperature, and improve the accuracy of its detection. Specifically, the heat generated by the detection chip 121 and the electrical components on the circuit board 122 is transferred to the containing shell 112 through the circuit board 122 or the internal space interval, and the containing shell 112 is in direct contact with the connecting sleeve 113 and the bottom cover 114, and the heat is transferred to the connecting sleeve 113 and the bottom cover 114, and the connecting sleeve 113 then transfers the heat to the mounting shell 111, so that the heat diffuses outward in a spherical shape from the inside to the outside. Since the connection between the containing shell 112, the connecting sleeve 113, the containing shell 112 and the bottom cover 114 is relatively tight, the structure is relatively compact, and the gaps between them are relatively small, that is, most of the heat conduction process from the containing shell 112 to the outside is transferred through the heat conductive material, and the heat conduction speed is faster than the heat conduction through the air between the gaps, so that the millimeter wave radar has the performance of both miniaturization and good heat dissipation effect.

[0079] In this embodiment, the housing 11 further comprises a cover 115 detachably connected to one end of the mounting shell 111 away from the bottom cover 114, and the cover 115 covers the mounting shell 111. Specifically, a side of the cover 115 close to the mounting shell 111 is provided with an elastic foot 1151, and the mounting shell 111 is provided with a mounting groove 1118 for the elastic foot 1151 to be hooked and fixed. In this embodiment, four elastic feet 1151 and four mounting grooves 1118 are respectively provided, and the cover 115 is also made of nylon 6 material.

[0080] By setting the cover 115, the cover 115 can shield the housing 112 installed inside the mounting shell 111, so as to prevent the housing 112 from being accidentally touched, which may change the detection direction of the detection chip 121 or cause direct damage to the housing 112. In addition, the cover 115 and the mounting shell 111 are detachable, and the cover 115 and the mounting shell 111 of different colors are selected according to the paint color of the vehicle body for assembly. Since only the cover 115 is exposed after the millimeter-wave radar is installed on the vehicle body, the concealment of the millimeter-wave radar can be greatly improved, and the overall aesthetics of the vehicle body can be improved. Except for the cover 115, the other parts of the millimeter-wave radar structure can be mass-produced, and the production cost is greatly reduced.

[0081] Combination Figure 6 As shown, in this embodiment, the vehicle-mounted distance detection device 1 also includes a cable 13 passed through the shell 11, the bottom cover 114 is provided with a avoidance hole 1146 for the cable 13 to pass through, and the rear containing shell 1124 is provided with a threading hole 11244 for the cable 13 to pass through. After passing through the threading hole 11244, the cable 13 is electrically connected to the circuit board 122 in the containing shell 112.

[0082] The cable 13 includes a cable body 131 and a clamping portion disposed on the outer wall of the cable body 131 and clamped and fixed to the rear accommodating shell 1124. The clamping portion includes two clamping plates 132 respectively clamped on the inner and outer sides of the rear accommodating shell 1124 near the threading hole 11244.

[0083] By arranging two clamps 132 on the cable 13 that can be clamped on the rear containing shell 1124, the connection firmness between the cable 13 and the containing shell 112 is improved. When the cable 13 is pulled by external force, the clamping effect of the clamps 132 and the containing shell 112 is utilized to prevent the cable 13 from loosening, thereby protecting the welding points between the cable 13 and the circuit board 122 and improving the electrical safety of the millimeter wave radar.

[0084] Further, the cable 13 is rotatably connected to the housing 11, and the threading hole 11244 extends radially outward to form an escape hole 11245 for the clamping plate 132 to pass through. The cable 13 can be rotated after one of the clamping plates 132 passes through the escape hole 11245, so as to be clamped and fixed on the housing 11. In this embodiment, the width of the clamping plate 132 is smaller than the width of the escape hole 11245. In other embodiments, the clamping plate 132 can be arranged in a ring around the cable body 131, and the clamping plate 132 can be clamped on the accommodating shell 112 by utilizing the elastic deformation of the clamping plate 132.

[0085] When the cable 13 and the containing shell 112 are assembled, one of the clamps 132 is extended into the containing shell 112 through the avoidance hole 11245, and then the cable 13 is rotated so that the two clamps 132 are respectively clamped on the inner and outer sides of the threading hole 11244, thereby achieving the fixation of the cable 13 and the containing shell 112, thereby improving the convenience of assembling the cable 13 and the containing shell 112.

[0086] Furthermore, at least two clamping parts are centrally symmetrically arranged on the outer wall of the cable body 131 along its circumference, and at least two avoidance holes 11245 are arranged on the housing 11 corresponding to the clamping parts. In this embodiment, the cable body 131 is provided with two clamping parts, that is, two pairs of clamping plates 132 are arranged.

[0087] Furthermore, an embedding groove 11246 is provided on the rear accommodating shell 1124 near the threading hole 11244, into which the clamping plate 132 can be embedded and which provides a rotation guide for the clamping plate 132, and the embedding groove 11246 is connected to the avoidance hole 11245. In this embodiment, the embedding groove 11246 is in an arc shape, and one end thereof extends to the avoidance hole 11245, and the other end thereof is provided with a stop groove wall which provides a stop and limit function for the clamping plate 132. In other embodiments, the embedding groove 11246 may also be an annular groove.

[0088] By opening an embedding groove 11246 on the rear containing shell 1124, the clamp 132 is accommodated in the embedding groove 11246, which saves the space occupied by the cable 13 and the containing shell 112 after assembly. In addition, the stopping groove wall of the embedding groove 11246 provides a stopping and limiting function for the rotation of the clamp 132, further improving the connection strength between the cable 13 and the containing shell 112.

[0089] Furthermore, a fastening protrusion 11247 having an interference fit with the clamping plate 132 is provided at the bottom of one end of the embedding groove 11246 away from the avoidance hole 11245. The fastening protrusion 11247 can improve the clamping force between the clamping plate 132 and the side wall of the rear accommodating shell 1124, further improve the connection stability between the two, and prevent the cable 13 from rotating and falling out.

[0090] Furthermore, the two clamping plates 132 of the clamping portion are arranged in opposite directions. In other embodiments, the two clamping plates 132 may also be arranged in a staggered manner. The clamping plates 132 are arranged in opposite directions to improve the clamping force of the two clamping plates 132 on the inner wall of the rear housing 1124, thereby improving the connection strength between the cable 13 and the rear housing 1124.

[0091] Furthermore, the cable body 131 protrudes near the clamping portion to form a reinforcement portion 1311, and the clamping plate 132 is connected to the reinforcement portion 1311. Preferably, the clamping plate 132 is integrally formed with the cable body 131. The reinforcement portion 1311 is formed to increase the diameter of the cable 13 at the connection of the clamping plate 132, thereby improving the connection stability between the clamping plate 132 and the cable body 131.

[0092] In this embodiment, the front end of the front accommodating shell 1123 is provided with a mounting end face 11234 for installing the light source auxiliary calibration device 3, the central axis of the mounting end face 11234 is parallel to the normal direction of the distance detection component 12, and the mounting end face 11234 is provided with a clamping portion that can be clamped and fixed with the light source auxiliary calibration device 3.

[0093] By installing the light source auxiliary calibration device 3 on the installation end surface 11234 of the front housing shell 1123, the light source auxiliary calibration device 3 emits light, and the housing shell 112 is rotated and adjusted to change the irradiation angle of the emitted light, and finally the emitted light is irradiated to the predetermined calibration point, thereby realizing the angle calibration of the millimeter wave radar. By providing a clamping portion on the installation end surface 11234, the light source auxiliary calibration device 3 can be quickly assembled with the housing shell 112, and the two are rotated synchronously, thereby realizing the calibration of the millimeter wave radar, the installation structure is relatively simple, the adjustment is convenient, the space occupied is small, and the operation flexibility is higher.

[0094] Preferably, the clamping portion includes a clamping groove 11235 provided on the mounting end surface 11234 and capable of being hooked and fixed by the light source auxiliary calibration device 3. Specifically, a plurality of clamping grooves 11235 are provided on the mounting end surface 11234 in a centrally symmetrical manner along its central axis. In the present embodiment, the number of the clamping grooves 11235 is four, and the four clamping grooves 11235 are all provided at the edge of the mounting end surface 11234. In other embodiments, the clamping portion may also be a curved hook 32.

[0095] Furthermore, the mounting end surface 11234 is provided with a mounting notch 11236 into which the hook 32 can be inserted and rotated to be placed in the clamping groove 11235. When the hook 32 and the clamping groove 11235 are mounted, the hook 32 is first inserted into the clamping groove 11235, and then the hook 32 is rotated so that the head of the hook 32 is clamped into the inside of the clamping groove 11235 to form a clamping effect, so that the hook 32 and the clamping groove 11235 are fixed to each other.

[0096] In this embodiment, the mounting end surface 11234 is planar, and the detection chip 121 is parallel to the mounting end surface 11234. By setting the mounting end surface 11234 at the front end of the front housing shell 1123 to be planar rather than curved, on the one hand, the planar mounting end surface 11234 is more stable when the light source auxiliary calibration device 3 is installed, and on the other hand, it is easier to ensure that the emitted light is parallel to the normal direction of the detection chip 121, thereby improving the accuracy of the millimeter wave radar angle calibration.

[0097] Combination Figure 7 As shown, the present invention further provides a light source auxiliary calibration device 3, comprising a light source body 31, one end of the light source body 31 is provided with a light emitting member that can emit light along its straight line direction, and one end of the light source body 31 away from the light emitting member is provided with a clamping portion that can be clamped and fixed with the vehicle-mounted distance detection device 1. Specifically, the clamping portion is a hook 32 that can be hooked and fixed with the vehicle-mounted distance detection device, and the number of the hooks 32 is consistent with the number of the clamping slots 11235.

[0098] Preferably, the light emitting element is a laser lamp. By using a laser lamp as the light emitting element, the emitted light is more concentrated and can be irradiated to the preset calibration point more accurately, thereby achieving angle calibration of the millimeter wave radar and improving the accuracy of calibration.

[0099] In summary, the vehicle-mounted distance detection device 1 of the present invention has the following advantages:

[0100] 1. In the vehicle-mounted distance detection device 1, a combined structure of a containing shell 112 and a mounting shell 111 arranged inside and outside is adopted. The containing shell 112 is spherical and rotatably connected to the mounting shell 111. The detection angle of the internal distance detection component 12 can be changed by rotating the containing shell 112. No external adjustment bracket is required. The detection angle can be calibrated through its own structure. The adjustment is convenient and quick. At the same time, the consistency of installation with the vehicle body 2 is maintained, so that the vehicle-mounted distance detection device 1, such as a millimeter-wave radar, is more miniaturized and the aesthetics of the entire vehicle appearance is improved.

[0101] 2. In the vehicle-mounted distance detection device 1, a multi-layer circuit board 122 layout structure is adopted in the spherical containing shell 112, and a smaller detection chip 121 is adopted and installed on the circuit board 122 closest to the outside of the vehicle body to improve its detection accuracy. In addition, the remaining electrical components are installed on the remaining circuit boards 122, and the installation positions of the detection chips 121 and the electrical components are reasonably allocated. The detection chips 121 and the electrical components are transformed from a planar arrangement to a three-dimensional spatial arrangement, which reduces the diameter of the containing shell 112, makes the vehicle-mounted distance detection device 1 more miniaturized, and further improves the aesthetics of the entire vehicle appearance.

[0102] 3. In the vehicle-mounted distance detection device 1, the housing 112, the connecting sleeve 113, the mounting shell 111, the top cover 115 and the bottom cover 114 are all made of heat-conducting materials, and the mounting shell 111, the housing 112, the connecting sleeve 113, the top cover 115 and the bottom cover 114 are tightly connected and reasonably distributed, so that the millimeter-wave radar is more miniaturized and has better heat dissipation performance, ensuring that the detection chip 121 works at a normal temperature, and improving its detection accuracy. Since the housing 112, the connecting sleeve 113, the housing 112 and the bottom cover 114 are closely connected to each other and the gaps between them are small, most of the heat conduction process of the housing 112 to the outside is transferred through the heat-conducting material, and the heat conduction speed is faster than the heat conduction through the air between the gaps, so that the millimeter-wave radar has both miniaturization and good heat dissipation performance.

[0103] 4. In the vehicle-mounted distance detection device 1, the bottom cover 114 and the mounting shell 111 are connected and fixed at three points by two snap-fit ​​structures and a fastener. On the premise that the vehicle-mounted distance detection device 1 realizes a miniaturized structure, the structure remains stable and firm, while reducing the difficulty of assembly and improving the assembly efficiency. In addition, a limiting portion 1115 is protruding on the outer wall of the mounting shell 111. The limiting portion 1115 not only provides an installation guide for the vehicle-mounted distance detection device 1, but also provides an installation space for the fastener, making the overall structure more streamlined, which is conducive to the miniaturization of the vehicle-mounted distance detection device 1.

[0104] 5. In the vehicle-mounted distance detection device 1, a snap-in groove 11235 is provided on the mounting end surface 11234 at the front end of the accommodating shell 112, so that the light source auxiliary calibration device 3 can be assembled with the vehicle-mounted distance detection device 1 more quickly. Since the vehicle-mounted distance detection device 1 can calibrate the detection direction by rotating the accommodating shell 112, the light source auxiliary calibration device 3 is directly connected to the accommodating shell 112, which is convenient and quick to adjust and also improves the accuracy of the calibration.

[0105] 6. In the vehicle-mounted distance detection device 1, the cover 115 is detachably connected to the mounting shell 111. The cover 115 of different colors is selected according to the paint color of the vehicle body for assembly with the mounting shell 111. Since only the cover 115 is exposed after the millimeter-wave radar is installed on the vehicle body, the concealment of the millimeter-wave radar can be greatly improved, and the overall aesthetics of the vehicle body can be enhanced. In addition to the cover 115, the other parts of the millimeter-wave radar can be mass-produced, and the production cost is greatly reduced.

[0106] 7. In the vehicle-mounted distance detection device 1, a clamping portion is provided on the outer wall of the cable 13 to connect with the containing shell 112, thereby improving the connection strength between the cable 13 and the containing shell 112, preventing the cable 13 from loosening from the circuit board 122 when being pulled, and improving the electrical safety of the vehicle-mounted distance detection device 1.

[0107] The above descriptions are only some embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A vehicle-mounted distance detection device, characterized in that: The invention comprises a housing and a distance detection component, wherein the housing comprises a mounting housing and a housing built in the mounting housing, the distance detection component is fixedly mounted in the housing, and the housing is rotatably connected to the mounting housing so that the distance detection direction of the distance detection component can be adjusted as the housing rotates; The accommodating shell is spherical, and the mounting shell defines a movable space for the accommodating shell to deflect around its spherical center to a certain angle within a preset range; The housing comprises a connecting sleeve elastically clamped between the mounting shell and the containing shell and providing damping for the containing shell, and a bottom cover covering the bottom of the mounting shell, wherein the bottom cover and the connecting sleeve together define the activity space; A guide protrusion is protruding from the outer wall of the containing shell, a guide groove for the guide protrusion to be embedded in the mounting shell is provided in the mounting shell, and a clearance groove for the guide protrusion to pass through is provided on the connecting sleeve, and the guide protrusion can slide along the guide groove to allow the containing shell to be rotated and adjusted horizontally, and the guide protrusion is hemispherical so that the containing shell can be rotated and adjusted up and down around the guide protrusion; a mounting end surface for installing a light source auxiliary calibration device is provided at the front end of the containing shell, the central axis of the mounting end surface is parallel to the normal direction of the distance detection component, and a clamping portion that can be clamped and fixed with the light source auxiliary calibration device is provided on the mounting end surface.

2. The vehicle-mounted distance detection device according to claim 1, characterized in that: A snap-fit ​​structure is provided between the bottom cover and the mounting shell to connect and fix the two. The snap-fit ​​structure includes a hook and a hole for the hook to be fixed. The mounting shell and the bottom cover are respectively provided with a first mounting hole and a second mounting hole. The bottom cover is fixed to the mounting shell by means of fasteners passing through the first mounting hole and the second mounting hole.

3. The vehicle-mounted distance detection device according to claim 2, characterized in that: The shell can be inserted into a preset hole opened on the vehicle body, and the outer wall of the mounting shell protrudes to form a limiting portion that can be clamped in a limiting hole on the vehicle body connected to the preset hole, and the first mounting hole is opened in one end of the limiting portion close to the bottom cover.

4. The vehicle-mounted distance detection device according to claim 1, characterized in that: The shell can pass through a preset hole on the vehicle body and be fixedly installed with the preset hole. The outer wall of the shell is provided with a first limit member and a second limit member along its installation direction, which can be respectively clamped on both sides of the preset hole, and the second limit member can be elastically deformed to pass through the preset hole and press against the inner surface of the vehicle body near the installation hole.

5. The vehicle-mounted distance detection device according to claim 4, characterized in that: The second limiting member is protrudingly arranged on the outer side wall of the connecting sleeve, and a positioning hole for the second limiting member to pass through is opened on the mounting shell.

6. The vehicle-mounted distance detection device according to claim 1 is characterized in that: The distance detection component includes a circuit board assembly and a detection chip. The circuit board assembly includes a circuit board arranged in parallel along the central axis direction of the containing shell. The outer periphery of the circuit board is adapted to be installed with the inner wall of the containing shell. The detection chip is installed on the circuit board near the top of the shell.

7. The vehicle-mounted distance detection device according to claim 6, characterized in that: The containing shell comprises a front containing shell and a rear containing shell which are interlocked with each other, a connecting piece is provided between two adjacent circuit boards to fix the two circuit boards to each other and form a space therebetween, and a supporting column is extended from the inner wall of the rear containing shell to support the circuit board assembly and make the circuit board abut against the inner wall of the front containing shell.

8. The vehicle-mounted distance detection device according to claim 6, characterized in that: The containing shell is filled with potting glue that fills between the circuit board and the inner wall of the containing shell, and the outer periphery of the circuit board is provided with a flat structure for the potting glue to flow in and form a sealed connection.

9. The vehicle-mounted distance detection device according to claim 1, characterized in that: It also includes a cable connected to the accommodating shell, the accommodating shell is provided with a threading hole for the cable to pass through, the cable includes a cable body and a clamping portion arranged on the outer wall of the cable body and clamped and fixed to the shell, the clamping portion includes two clamping plates respectively clamped on the inner and outer sides of the shell near the threading hole.

10. The vehicle-mounted distance detection device according to claim 9, characterized in that: The cable is rotatably connected to the accommodating shell, and the threading hole extends radially outward to form an escape hole for the clamping plate to pass through. The cable can be rotated after one of the clamping plates passes through the escape hole, so as to be clamped and fixed on the accommodating shell.

11. The vehicle-mounted distance detection device according to claim 1, characterized in that: The clamping portion comprises a clamping groove which is arranged on the installation end surface and can be used for the light source auxiliary calibration device to be hooked and fixed.

12. The vehicle-mounted distance detection device according to claim 1, characterized in that: The shell also includes a surface cover detachably connected to the end of the mounting shell exposed outside the vehicle body, the surface cover is provided with an elastic foot on one side close to the mounting shell, and the mounting shell is provided with a mounting groove for the elastic foot to be hooked and fixed.

13. The vehicle-mounted distance detection device according to claim 1, characterized in that: The outer diameter of the shell is less than 2.8 cm.

14. The vehicle-mounted distance detection device according to any one of claims 1 to 13, characterized in that: The vehicle-mounted distance detection device is a millimeter wave radar circuit, and the distance detection component includes a millimeter wave radio frequency chip for transmitting and receiving millimeter wave radar signals.

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