Vehicle-mounted millimeter wave radar sensor

Abstract

The utility model discloses a vehicle-mounted millimeter wave radar sensor, which comprises a bottom shell and an upper cover, the upper cover is hermetically connected with the bottom shell, a control panel is arranged on the bottom shell, a plurality of detection probes are arranged in the upper cover, one end of each detection probe extends out of the upper end face of the upper cover, and the other end of each detection probe extends out of the lower end face of the upper cover. The detection probes are electrically connected with the control panel respectively; a limiting groove is formed in the lower end face of the upper cover, a sealing ring is arranged in the limiting groove, the sealing ring abuts against the side wall of the limiting groove and the upper end face of the bottom shell in a sealed mode, a plurality of clamping blocks are arranged on the sealing ring, clamping grooves are formed in the positions, corresponding to the clamping blocks, of the limiting groove, and the clamping blocks are clamped in the clamping grooves. And the clamping block is clamped with the clamping groove in a limiting manner. The upper cover and the bottom shell are fixedly connected in a sealed mode through the sealing ring, the overall protection grade is improved, the problem of displacement of the sealing ring can be avoided through cooperation of the clamping block and the clamping groove, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of driver assistance system technology, specifically to an in-vehicle millimeter-wave radar sensor. Background Technology

[0002] Vehicles have blind spots while driving, especially medium and large-sized construction vehicles, whose blind spots are much larger than those of smaller cars. Therefore, many medium and large-sized construction vehicles are equipped with driver assistance systems. These systems use electronic devices to help detect the surrounding environment of the vehicle. If there are vehicles or people passing by, the driver assistance system will send a warning signal to the driver, reminding them to drive cautiously, thereby improving driving safety.

[0003] Millimeter-wave radar is a common detection device in driver assistance systems. Currently, millimeter-wave radar sensors are typically installed at the rear of vehicles to detect environmental conditions in the blind spots of the rearview mirrors. As can be seen, the working environment of millimeter-wave radar sensors is extremely harsh, especially on some engineering vehicles where loading and unloading cargo frequently requires them to operate in high-dust, high-humidity environments. This places high demands on the dustproof and waterproof performance of millimeter-wave radar sensors.

[0004] Currently, existing millimeter-wave radar sensors typically only achieve dust and water resistance by applying waterproof adhesive between the upper and lower housings. While this does provide some initial waterproofing, the adhesive tends to age and peel off over time, allowing water or dust to enter the sensor and causing malfunctions. Therefore, existing millimeter-wave radar sensors have insufficient protection and a short lifespan. Utility Model Content

[0005] To address some or all of the problems existing in the prior art, this utility model provides a vehicle-mounted millimeter-wave radar sensor, including a bottom shell and a top cover. The top cover covers the upper surface of the bottom shell and is sealed to the bottom shell. A control board is provided on the bottom shell. Multiple detection probes are provided inside the top cover. One end of each detection probe extends out of the upper surface of the top cover, and each detection probe is electrically connected to the control board. A limiting groove is provided on the lower surface of the top cover. A sealing ring is provided in the limiting groove. The sealing ring is sealed and abuts against the side wall of the limiting groove and the upper surface of the bottom shell. Multiple locking blocks are provided on the sealing ring. Locking grooves are provided at corresponding positions of the locking blocks on the limiting groove. The locking blocks are locked and engaged with the locking grooves.

[0006] As a further improvement of this utility model, a positioning protrusion is provided on the bottom shell at a position corresponding to the sealing ring, and a stepped surface is provided on the sealing ring, the stepped surface abutting and sealing with the positioning protrusion.

[0007] As a further improvement of this utility model, the bottom shell is provided with a plurality of connection holes, and the top cover is provided with screw holes at corresponding positions to the connection holes. Each connection hole is provided with a fixing screw, and the fixing screw passes through the connection hole and is fixedly connected to the screw hole.

[0008] As a further improvement of this utility model, the connecting holes are respectively distributed around the positioning protrusion, and the screw holes are respectively distributed around the limiting groove.

[0009] As a further improvement of this utility model, two mounting inclined surfaces are provided on the upper end surface of the cover. The two mounting inclined surfaces are symmetrically distributed on the left and right sides along the center line of the cover. The inclination direction of the mounting inclined surfaces is from low to high from the side of the cover towards the center. The detection probes are symmetrically distributed on the mounting inclined surfaces.

[0010] As a further improvement of this utility model, each of the mounting inclined surfaces is provided with two detection probes.

[0011] As a further improvement of this utility model, a support base is provided on the lower end surface of the bottom shell, and a mounting bracket is provided on the support base. The support base and the mounting bracket are adjustable and limited in connection.

[0012] As a further improvement of this utility model, one end of the support base is hinged to the mounting bracket, the mounting bracket is provided with an arc-shaped hole, the arc-shaped hole is provided with an adjusting screw, the adjusting screw passes through the arc-shaped hole and is connected to the support base, and the adjusting screw can slide within the arc-shaped hole.

[0013] As a further improvement of this utility model, the mounting bracket is provided with multiple fixing holes.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention improves the overall protection level by installing a sealing ring on the mating surfaces of the upper cover and the bottom shell, and by placing the sealing ring within the limiting groove of the upper cover. This sealing ring ensures a secure and sealed connection between the upper cover and the bottom shell, achieving an IP69K protection level as measured in actual tests. Furthermore, the engagement of the snap-fit ​​block and the snap-fit ​​groove facilitates the assembly and positioning of the sealing ring, preventing displacement and extending its service life. Attached Figure Description

[0016] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0018] Figure 2 This is an exploded structural diagram of an embodiment of the present invention;

[0019] Figure 3 This is a top view of an embodiment of the present invention.

[0020] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure of AA;

[0021] Figure 5 yes Figure 4 A magnified structural diagram of part B in the middle section;

[0022] Figure 6 This is a schematic diagram of the structure of the upper cover in an embodiment of this utility model;

[0023] Figure 7 This is a schematic diagram of the sealing ring structure in an embodiment of this utility model;

[0024] Figure 8 This is a schematic diagram of the bottom shell structure in an embodiment of this utility model. Detailed Implementation

[0025] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0026] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0028] like Figure 1-8 As shown, an on-board millimeter-wave radar sensor includes a base housing 1 and a top cover 2. The top cover 2 covers the upper surface of the base housing 1 and is sealed to it. A control board 3 is fixedly mounted on the base housing 1, and the control board 3 is used to connect to the control center of the driver assistance system. Multiple detection probes 4 are fixedly mounted inside the top cover 2, with one end of each probe extending out of the upper surface of the top cover 2. Each detection probe 4 is electrically connected to the control board 3. The detection probes 4 monitor the surrounding environment. If a detection probe 4 detects an object, it sends a signal back to the control board 3. The control board 3 then transmits a signal to the driver assistance system to remind the driver to drive cautiously and ensure driving safety.

[0029] A limiting groove 21 is provided on the lower end face of the upper cover 2, and a sealing ring 5 is provided in the limiting groove 21. The sealing ring 5 seals and abuts against the side wall of the limiting groove 21 and the upper end face of the bottom shell 1, respectively. The sealing ring 5 seals and fixes the upper cover 2 and the bottom shell 1, thereby improving the sealing performance of the vehicle-mounted millimeter-wave radar sensor and enhancing its dustproof and waterproof capabilities. Limiting the sealing ring 5 by the limiting groove 21 not only facilitates installation but also further improves the sealing performance. According to the applicant's actual test, its protection level can reach IP69K, which is fully capable of being used in the harsh working environment of a vehicle. The sealing ring 5 is provided with multiple snap-fit ​​blocks 51, and the limiting groove 21 is provided with snap-fit ​​grooves 22 at corresponding positions of the snap-fit ​​blocks 51. The snap-fit ​​blocks 51 and snap-fit ​​grooves 22 engage and limit the installation position of the sealing ring 5. The cooperation between the snap-fit ​​blocks 51 and snap-fit ​​grooves 22 can quickly position the installation position of the sealing ring 5 and also prevent the sealing ring 5 from shifting during use, thereby improving the stability and service life of the structure.

[0030] To further improve sealing performance, a positioning protrusion 11 is provided on the bottom shell 1 at a position corresponding to the sealing ring 5, and a stepped surface 52 is provided on the sealing ring 5. When the bottom shell 1 is connected and fixed to the top cover 2, the stepped surface 52 abuts against the positioning protrusion 11 for sealing. Through the cooperation of the stepped surface 52 and the positioning protrusion, the mating surface between the sealing ring 5 and the bottom shell 1 is stepped, increasing the contact area between the two, which can further improve the sealing performance of the connection between the bottom shell 1 and the sealing ring 5 and enhance the protective performance.

[0031] The bottom shell 1 has multiple connecting holes 12, and the top cover 2 has corresponding screw holes 23 at the corresponding positions of the connecting holes 12. Each connecting hole 12 has a fixing screw 6, which passes through the connecting hole 12 and is fixedly connected to the screw hole 23. The fixing screws 6 are used to connect and fix the top cover 2 to the bottom shell 1. After tightening the fixing screws 6, the sealing ring 5 can connect and seal with both the top cover 2 and the bottom shell 1, making the top cover 2 and the bottom shell 1 a sealed unit. This prevents external moisture and dust from entering the interior, extending its service life.

[0032] In this embodiment, the connecting holes 12 are distributed around the periphery of the positioning protrusions 11, and the screw holes 23 are distributed around the periphery of the limiting groove 21. In other words, all the fixing screws 6 connecting the upper cover 2 and the bottom shell 1 are distributed around the periphery of the sealing ring 5. This eliminates the need for additional waterproofing treatment in the fit gap between the fixing screws 6 and the bottom shell 1, simplifying the structure and saving costs. To avoid the position of the fixing screws 6, the limiting groove 21 is formed by a combination of multiple curves and straight lines, and the shape of the sealing ring 5 matches that of the limiting groove 21. The use of a combination of multiple curves and straight lines in the sealing ring 5 can improve the connection stability between the sealing ring 5 and the limiting groove 21, further reducing the possibility of displacement of the sealing ring 5 and improving the protective performance.

[0033] In this embodiment, two mounting ramps 24 are provided on the upper surface of the cover 2. The two mounting ramps 24 are symmetrically distributed along the center line of the cover 2. The inclination direction of the mounting ramps 24 is from low to high from the side of the cover 2 towards the center. The detection probes 4 are symmetrically distributed on the mounting ramps 24, and each mounting ramp 24 has two detection probes 4. By setting the detection probes 4 on the mounting ramps 24, the detection range angle of the detection probes 4 can be increased. According to the applicant's actual measurement, the detection angle can be increased by at least 15-20°. At the same time, when the vehicle millimeter-wave radar sensor is hit by a foreign object, the ramp structure of the cover 2 can also reduce the possibility of the cover 2 being damaged by the impact, and improve its impact resistance.

[0034] In other embodiments, the number of detection probes 4 can be any other number, as long as there is at least one detection probe 4 on each mounting ramp 24.

[0035] A support base 7 is provided on the lower end surface of the base shell 1, and a mounting bracket 8 is provided on the support base 7. The support base 7 and the mounting bracket 8 are adjustable in terms of limit. The vehicle millimeter-wave radar sensor can be installed on a designated position on the vehicle through the mounting bracket 8, and the installation angle can be adjusted through the cooperation of the support base 7 and the mounting bracket 8, thereby improving practicality and versatility.

[0036] Specifically, one end of the support base 7 is hinged to the mounting bracket 8. The mounting bracket 8 has an arc-shaped hole 81, and an adjusting screw 9 is provided on the arc-shaped hole 81. The adjusting screw 9 passes through the arc-shaped hole 81 and connects to the support base 7, and can slide within the arc-shaped hole 81. The mounting bracket 8 has multiple fixing holes 82. When installing the vehicle-mounted millimeter-wave radar sensor, it can be fixed to the preset installation position on the vehicle by installing screws on the fixing holes 82. Then, by pushing the support base 7 to rotate and swing on the mounting bracket 8, the adjusting screw 9 can slide on the arc-shaped hole 81, thereby adjusting the installation orientation angle of the vehicle-mounted millimeter-wave radar sensor. After adjusting to the appropriate position, the adjusting screws 9 are tightened to connect and fix them to the mounting bracket 8 to complete the installation.

[0037] The upper cover 2 and the bottom shell 1 of this vehicle-mounted millimeter-wave radar sensor are sealed together by a sealing ring 5, which enhances its waterproof and dustproof capabilities. The sealing ring 5 is also positioned within a limiting groove 21, and all fixing screws 6 are located around the sealing ring 5, simplifying the mechanical structure and preventing displacement, thus improving structural stability. A snap-fit ​​block 51 on the sealing ring 5 engages with a snap-fit ​​groove 22 on the limiting groove 21, enabling rapid installation and positioning of the sealing ring 5, improving assembly efficiency, further reducing the risk of displacement and loosening, and enhancing structural stability. According to the applicant's tests, the protection level of this vehicle-mounted millimeter-wave radar sensor easily reaches IP69K. Furthermore, the cooperation between the support base 7 and the mounting bracket 8 allows for real-time adjustment of the sensor's installation orientation, improving its versatility and making it suitable for installation in different types of vehicles and at different locations on the vehicle.

[0038] The above-described specific embodiments are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes but is not limited to the specific embodiments described above. All equivalent changes made in accordance with this utility model are within the protection scope of this utility model.

Claims

1. A vehicle-mounted millimeter-wave radar sensor, characterized in that: The device includes a bottom shell and a top cover. The top cover covers the upper surface of the bottom shell and is sealed to the bottom shell. The bottom shell is provided with a control board. The top cover is provided with multiple detection probes. One end of each detection probe extends out of the upper surface of the top cover. Each detection probe is electrically connected to the control board. The lower end face of the upper cover is provided with a limiting groove, and a sealing ring is provided in the limiting groove. The sealing ring is sealed and abuts against the side wall of the limiting groove and the upper end face of the bottom shell respectively. The sealing ring is provided with multiple snap-fit ​​blocks, and snap-fit ​​grooves are provided at the corresponding positions of the snap-fit ​​blocks on the limiting groove. The snap-fit ​​blocks are limited and snap-fitted with the snap-fit ​​grooves.

2. The vehicle-mounted millimeter-wave radar sensor according to claim 1, characterized in that: The bottom shell has a positioning protrusion at a position corresponding to the sealing ring, and the sealing ring has a stepped surface, which abuts against the positioning protrusion for sealing.

3. The vehicle-mounted millimeter-wave radar sensor according to claim 2, characterized in that: The bottom shell is provided with multiple connection holes, and the top cover is provided with screw holes at corresponding positions of the connection holes. Each connection hole is provided with a fixing screw, which passes through the connection hole and is fixedly connected to the screw hole.

4. The vehicle-mounted millimeter-wave radar sensor according to claim 3, characterized in that: The connecting holes are distributed around the periphery of the positioning protrusion, and the screw holes are distributed around the periphery of the limiting groove.

5. The vehicle-mounted millimeter-wave radar sensor according to claim 1, characterized in that: The upper surface of the cover has two mounting slopes, which are symmetrically distributed along the center line of the cover. The slopes are inclined from the side of the cover towards the center, and the detection probes are symmetrically distributed on the mounting slopes.

6. The vehicle-mounted millimeter-wave radar sensor according to claim 5, characterized in that: Two detection probes are provided on each of the mounting ramps.

7. The vehicle-mounted millimeter-wave radar sensor according to any one of claims 1-6, characterized in that: The bottom surface of the base shell is provided with a support base, and the support base is provided with a mounting bracket. The support base and the mounting bracket are connected in an adjustable limiting manner.

8. The vehicle-mounted millimeter-wave radar sensor according to claim 7, characterized in that: One end of the support base is hinged to the mounting bracket. The mounting bracket has an arc-shaped hole and an adjusting screw. The adjusting screw passes through the arc-shaped hole and connects to the support base. The adjusting screw can slide within the arc-shaped hole.

9. The vehicle-mounted millimeter-wave radar sensor according to claim 7, characterized in that: The mounting bracket has multiple fixing holes.

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