CN213658957U - Millimeter wave radar structure - Google Patents
Millimeter wave radar structure Download PDFInfo
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- CN213658957U CN213658957U CN202022090129.XU CN202022090129U CN213658957U CN 213658957 U CN213658957 U CN 213658957U CN 202022090129 U CN202022090129 U CN 202022090129U CN 213658957 U CN213658957 U CN 213658957U
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Abstract
The utility model belongs to the technical field of the millimeter wave radar, concretely relates to millimeter wave radar structure. The antenna comprises a protective shell, an antenna board, a heat dissipation shielding piece and a power panel, wherein the antenna board, the heat dissipation shielding piece and the power panel are arranged in the protective shell; the antenna board and the power board are respectively positioned at the upper side and the lower side of the heat dissipation shielding sheet, and the antenna board is positioned above the power board; the protective shell comprises an upper cover and a bottom cover, wherein a plurality of soft silica gel columns are arranged on the inner side of the top of the upper cover, and the soft silica gel columns and the upper cover are formed into a whole through secondary injection molding; the inner side edge of the bottom cover is provided with a circle of LSR silica gel ring, and the LSR silica gel ring and the bottom cover are formed into a whole through secondary injection molding; the LSR silica gel ring is tightly attached to the upper cover; the upper cover is fixedly connected with the bottom cover; the antenna board is electrically connected with the power supply board. The utility model has the characteristics of can improve the installation effectiveness, practice thrift man-hour cost, improve radar inner structure stability and waterproof performance is good.
Description
Technical Field
The utility model belongs to the technical field of the millimeter wave radar, concretely relates to millimeter wave radar structure.
Background
With the continuous development of the automobile industry and the continuous improvement of the social and economic levels, automobiles become common transportation tools in modern society. At present, traffic networks are developed, vehicles on roads are numerous, road conditions of pedestrians, electric vehicles, motorcycles and the like are complex, and speeds of various moving objects are different, so that safety requirements of people on automobile driving are higher and higher, in recent years, various safety driving devices such as millimeter wave radars, ultrasonic radars, forward-looking cameras, all-round cameras and the like are continuously added on automobiles, and the devices are beneficial to improving driving safety and comfort of drivers in driving under the assistance of algorithms, and reducing risk rates of accidents and casualties. In addition, various electronic devices such as a millimeter wave radar, an ultrasonic radar, a look-around camera, a reversing camera and a forward-looking camera acquire various real-time data and transmit the real-time data to a rear-end master controller, and the whole system which makes different instructions for a brake, an instrument, a steering wheel and the like through the algorithm analysis of the data by the master controller is called an ADAS system and a high-level intelligent driving auxiliary system.
Under the background of such demands, the automobile radar industry is continuously developing well, and therefore various millimeter wave radar products are emerging. In the millimeter wave radar products which are produced in mass production in the current market at home, the sizes, the water resistance, the installation simplicity, the internal structure stability and the like of the whole millimeter wave radar products are different. From the millimeter wave radar structures in China on the market, most of the existing structures are large in size, and the appearance is difficult to be accepted by the market. Secondly, in order to reduce the overall cost of the millimeter wave radar, many enterprises adopt the rubber ring to prevent water, the rubber ring is waterproof in various waterproof structures, and the waterproof performance cannot be guaranteed well due to the material performance and tolerance of the rubber ring, so that the great water inlet risk exists. The waterproof requirement of the vehicle-mounted millimeter wave radar is IP67 level, and the vehicle-mounted millimeter wave radar is subjected to the risk of high-pressure water impact even during vehicle washing, so that the rubber ring is not recommended to be adopted for waterproofing. In addition, the existing afterloading millimeter wave radar on the market does not take the consideration of afterloading market installation, and the levelness and the verticality of the radar after installation cannot be measured and verified. Finally, the operation of the interior of the millimeter wave radar structure in the domestic market is complex during installation, and some millimeter wave radar structures are installed by adopting two installation plates in sequence and are installed by taking the shell as a reference, so that the installation complexity is increased. The shell and the inside ordinary stereoplasm plastic or die-casting metalwork that adopt make the radar be difficult to guarantee at the straightness's that hangs down, lead to the installation back stability relatively poor, through vibration and fall the inside risk that has the abnormal sound after the experiment, also can make inside two PCB boards receive stereoplasm surface pressure and have great stress or deformation because of screw lock attaches the back, influence the normal work of radar antenna panel and power strip.
For example, a sealing device for millimeter wave radar described in chinese utility model application No. CN201820306580.0 includes an elastic body having a bowl-shaped structure, an outer elastic sealing flange surrounding the periphery of the elastic body, an inner elastic sealing flange disposed at the center of the inner surface of the elastic body for accommodating the millimeter wave radar, and a fixing seat and a positioning seat extending laterally and outwardly around the inner elastic sealing flange; the curved surface defined by the periphery of the elastomeric body is a bumper-contoured structure, and the inner elastomeric sealing flange is a millimeter-wave radar-contoured ring-like structure. Although the sealing device of the millimeter wave radar adopts the elastic body, the elasticity of the elastic body enables the sealing device to deform correspondingly under the large-size error of the bumper, so that the millimeter wave radar is sealed under the large-size error; in addition, the annular structure of bumper profile modeling structure and millimeter wave radar profile modeling makes outer elasticity sealing flange and interior elasticity sealing flange can laminate on bumper and millimeter wave radar to block splash and dust completely, but its shortcoming lies in that the installation procedure is comparatively complicated to be the device of plus on millimeter wave radar's basis, make also relatively poor with the holistic structural stability of radar, also increased the cost simultaneously.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome prior art, current millimeter wave radar has the problem that the installation operation is complicated, waterproof performance is weak and radar inner structure poor stability, provides one kind can improve the installation effectiveness, practice thrift man-hour cost, improve radar inner structure stability and waterproof performance good millimeter wave radar structure.
In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:
the millimeter wave radar structure comprises a protective shell, an antenna plate, a heat dissipation shielding sheet and a power panel, wherein the antenna plate, the heat dissipation shielding sheet and the power panel are arranged in the protective shell; the antenna board and the power board are respectively positioned at the upper side and the lower side of the heat dissipation shielding sheet, and the antenna board is positioned above the power board; the protective shell comprises an upper cover and a bottom cover, wherein a plurality of soft silica gel columns for elastically supporting the internal structure of the radar are arranged on the inner side of the top of the upper cover, and the soft silica gel columns and the upper cover are formed into a whole through secondary injection molding; a circle of waterproof LSR silica gel ring is arranged at the edge of the inner side of the bottom cover, and the LSR silica gel ring and the bottom cover are formed into a whole through secondary injection molding; the LSR silica gel ring is tightly attached to the upper cover; the upper cover is fixedly connected with the bottom cover; the antenna board is electrically connected with the power supply board.
Preferably, a square hole is formed in the top of the outer side of the upper cover, and a square glass lens is arranged in the square hole.
Preferably, the glass lens is adhered in the square hole through double-sided back glue.
Preferably, a round groove is formed in the bottom cover, a round hole is formed in the middle of the round groove, and a waterproof vent valve is plugged in the round hole.
Preferably, the bottom cover is fixedly connected with the upper cover through self-tapping screws.
Preferably, the upper side surface and the lower side surface of the heat dissipation shielding sheet are respectively provided with a positioning column for limiting the antenna board or the power supply board.
Preferably, the antenna board and the power board are connected in a matched manner through a board-to-board connector.
Preferably, a PIN for inserting the power panel is further fixed on the inner wall of the upper cover, and the PIN is of a spring PIN type or a press PIN type.
Compared with the prior art, the utility model, beneficial effect is: (1) the LSR liquid silica gel and the metal die-cast bottom cover are subjected to secondary injection molding, so that the waterproof performance is excellent; (2) the glass lens is added, so that the glass lens is convenient to mount in the market, and the angle of the millimeter wave radar emitting surface can be adjusted by means of a laser level debugging instrument; (3) the internal structure of the millimeter wave radar is simplified, the mounting steps of a production line are optimized, the mounting efficiency is improved, and the working time cost is reduced; (4) the internal support column form of the upper cover of the millimeter wave radar is improved, the soft silica gel column is adopted, the hard contact between the upper cover and the PCBA is avoided, the PCBA is protected, and tolerance matching is facilitated, so that the silica gel column has 0.1mm-0.5mm micro-deformation after installation, the internal structure of the radar can be better elastically supported, abnormal sound is prevented, and the stability of the internal structure is improved.
Drawings
FIG. 1 is a front view of a millimeter wave radar structure according to the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a rear view of the millimeter wave radar structure of the present invention;
fig. 4 is a schematic view of an internal structure of the upper cover of the present invention.
In the figure: the solar cell module comprises an upper cover 1, a bottom cover 2, an antenna board 3, a heat dissipation shielding sheet 4, a power board 5, an LSR silica gel ring 6, a glass lens 7, a waterproof ventilation valve 8, a self-tapping screw 9, a soft silica gel column 10, a PIN needle 11 and a thick supporting rib 12.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will explain embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.
Example 1:
the millimeter wave radar structure shown in fig. 1 to 3 includes a protective casing, an antenna board 3 disposed in the protective casing, a heat dissipation shield 4 and a power board 5; the antenna board is positioned on the upper side of the heat dissipation shielding sheet, and the power supply board is positioned on the lower side of the heat dissipation shielding sheet; the protective shell comprises an upper cover 1 and a bottom cover 2, and a circle of waterproof LSR silica gel ring 6 is arranged at the edge of the inner side of the bottom cover; the LSR silica gel ring is tightly attached to the upper cover; the upper cover is fixedly connected with the bottom cover; the antenna board is electrically connected with the power supply board.
The upper cover is a protective cover of the antenna board and is made of a plastic material through an injection molding process, wherein the material is PBT + GF 30;
the bottom cover is made of metal die-cast aluminum alloy, one circle on the periphery of the bottom cover is designed to be an LSR silica gel ring to improve the waterproof performance, and the LSR silica gel ring and the bottom cover are formed into a whole through secondary injection molding;
the radiating shielding piece is used for weakening mutual interference between the power panel and the antenna panel, is also beneficial to radiating the antenna panel and the power panel, and is made of metal die-cast aluminum alloy.
Furthermore, a square hole is formed in the top of the outer side of the upper cover, and a square glass lens 7 is arranged in the square hole. The glass lens is stuck in the square hole through double-sided back glue. The glass lens is added, so that the glass lens can be conveniently mounted on the rear market when the vehicle-mounted millimeter wave radar is mounted, the mounting levelness and the perpendicularity can be detected and measured through a laser beam, the angle adjustment during mounting can be realized, and the mounting accuracy is improved.
Furthermore, a circular groove is formed in the bottom cover, a circular hole is formed in the middle of the circular groove, and a waterproof vent valve 8 is plugged in the circular hole. The waterproof ventilation valve is used for balancing the internal and external pressure of the cavity, avoiding the sealing failure caused by structural deformation, improving the working environment in the sealing cavity and improving the reliability and durability of the assembly.
Further, as shown in fig. 3, the bottom cover is provided with self-tapping screws 9 at four corners, and the bottom cover and the upper cover are locked by the four self-tapping screws, and the inner structure is also pressed and fixed.
In addition, the upper side and the lower side of the heat dissipation shielding sheet are respectively provided with a positioning column for limiting the antenna board or the power supply board. The positioning column is a protrusion on the heat dissipation shielding plate, is cylindrical and corresponding, positioning holes matched with the positioning column are also formed in the antenna board and the power board, and the power board and the antenna board can be better fixed through the positioning column and the positioning holes.
Further, when the power panel and the antenna panel are fixed, the antenna panel and the power panel are connected in a matched mode through the panel-to-panel connector. The male end of the board-to-board connector arranged on the antenna board and the female end of the board-to-board connector welded on the power board are matched in place, so that the power board, the antenna board and the radiating shielding sheet form a simple whole, and the stability of the internal structure of the radar is enhanced.
In addition, as shown in fig. 4, the inner side of the top of the upper cover is provided with a plurality of soft silica gel columns 10 for elastically supporting the inner structure of the radar through a secondary injection molding process, the soft silica gel columns are regularly arranged into a ring, and the inner structure of the radar can be elastically supported better by the soft silica gel columns, so that abnormal sound is prevented, and the stability of the inner structure is improved.
In fig. 4, a PIN 11 for inserting the power board is further fixed on the inner wall of the upper cover, the PIN is of a spring PIN type or a press PIN type, and the PIN can be in contact fit with the PCB after being inserted without wave soldering, and certainly, the PIN can be soldered in a mode of a common PIN and hand soldering. The utility model discloses also carry out the connection work through PIN needle and outside other systems.
Based on embodiment 1, the utility model discloses an installation step as follows:
s1, firstly, roughly positioning the power panel through the positioning column on the heat dissipation shielding sheet, and placing the power panel on the heat dissipation shielding sheet so that the power panel faces downwards and the heat dissipation shielding sheet faces upwards;
s2, roughly positioning the antenna board through a positioning column on the other side of the heat dissipation shielding sheet, and matching the male end of the board-to-board connector on the antenna board with the female end of the board-to-board connector welded on the power board in place to enable the power board, the antenna board and the heat dissipation shielding sheet to form an integral PCBA;
s3, the PCBA obtained in the step S2 is vertically and lightly placed in the upper cover through the thick support ribs 12 arranged on the inner side wall of the upper cover, and the PIN in the upper cover is inserted into the PIN pinhole of the power panel in a targeted mode;
s4, matching the bottom cover and the upper cover which are die-cast by metal, and slightly pressing the bottom cover and the upper cover hard to make the LSR silica gel ring completely and tightly attached to the upper cover;
s5, locking the bottom cover and the upper cover through four self-tapping screws, and simultaneously pressing and fixing the internal structure;
and S6, plugging the waterproof vent valve into the circular groove round hole of the bottom cover to complete the installation of the whole structure.
In addition, the back of the glass lens is attached with a double-sided gum with the thickness of 0.2mm, and the glass lens is attached to the upper cover through the double-sided gum. The glass lens does not need to be installed on a production line, and a supplier is attached to the glass lens before the glass lens is covered with the material.
The utility model adopts secondary injection molding of LSR liquid silica gel and metal die-cast bottom cover, and has excellent waterproof performance; the utility model is additionally provided with the glass lens at the top of the outer side of the upper cover, so that the angle of the emitting surface of the millimeter wave radar can be adjusted by means of a laser level debugging instrument when the device is conveniently mounted; the utility model also simplifies the internal structure of the millimeter wave radar, optimizes the installation steps of the production line, improves the installation efficiency and reduces the working time cost; the utility model discloses improved millimeter wave radar's upper cover inside support column form, adopted soft silica gel column, avoided upper cover and PCBA's hard contact, protected PCBA, also be favorable to the tolerance cooperation for there is 0.1mm-0.5mm micro deformation in installation back silica gel column, let radar inner structure can obtain better elastic support, prevented the production of abnormal sound, increased inner structure's stability.
The foregoing has been a detailed description of the preferred embodiments and principles of the present invention, and it will be apparent to those skilled in the art that variations may be made in the specific embodiments based on the concepts of the present invention, and such variations are considered as within the scope of the present invention.
Claims (8)
1. The millimeter wave radar structure is characterized by comprising a protective shell, an antenna board, a heat dissipation shielding piece and a power panel, wherein the antenna board, the heat dissipation shielding piece and the power panel are arranged in the protective shell; the antenna board and the power board are respectively positioned at the upper side and the lower side of the heat dissipation shielding sheet, and the antenna board is positioned above the power board; the protective shell comprises an upper cover and a bottom cover, wherein a plurality of soft silica gel columns for elastically supporting the internal structure of the radar are arranged on the inner side of the top of the upper cover, and the soft silica gel columns and the upper cover are formed into a whole through secondary injection molding; a circle of waterproof LSR silica gel ring is arranged at the edge of the inner side of the bottom cover, and the LSR silica gel ring and the bottom cover are formed into a whole through secondary injection molding; the LSR silica gel ring is tightly attached to the upper cover; the upper cover is fixedly connected with the bottom cover; the antenna board is electrically connected with the power supply board.
2. The millimeter wave radar structure according to claim 1, wherein a square hole is formed in the top of the outer side of the upper cover, and a square glass lens is arranged in the square hole.
3. The millimeter-wave radar structure of claim 2, wherein the glass lens is glued into the square hole with a double-sided adhesive.
4. The millimeter wave radar structure according to claim 1, wherein a circular groove is formed in the bottom cover, a circular hole is formed in the middle of the circular groove, and a waterproof vent valve is plugged in the circular hole.
5. The millimeter wave radar structure according to any one of claims 1 to 4, wherein the bottom cover is fixedly connected to the upper cover by a self-tapping screw.
6. The millimeter wave radar structure according to claim 1, wherein positioning posts for limiting the position of the antenna board or the power board are arranged on both the upper and lower side surfaces of the heat dissipation shielding plate.
7. The millimeter-wave radar structure of claim 1, wherein the antenna board and the power board are connected in a board-to-board manner by means of a board-to-board connector.
8. The millimeter wave radar structure according to claim 1, wherein a PIN for inserting the power strip is further fixed on the inner wall of the upper cover, and the PIN is of a spring PIN type or a press PIN type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022090129.XU CN213658957U (en) | 2020-09-22 | 2020-09-22 | Millimeter wave radar structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022090129.XU CN213658957U (en) | 2020-09-22 | 2020-09-22 | Millimeter wave radar structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213658957U true CN213658957U (en) | 2021-07-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022090129.XU Active CN213658957U (en) | 2020-09-22 | 2020-09-22 | Millimeter wave radar structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213658957U (en) |
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2020
- 2020-09-22 CN CN202022090129.XU patent/CN213658957U/en active Active
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