CN210894675U - Radar for enhancing signal transmission and reception - Google Patents

Abstract

The utility model discloses a strengthen radar of signalling and receipt, it belongs to the car-mounted device technical field, include protecting sheathing, metallic shield shell, PCB board and the antenna house of superpose in proper order along the first direction, the PCB board orientation the one side of antenna house is equipped with the antenna, the antenna with distance between the antenna house is the half wavelength's of electromagnetic wave signal integer times, the antenna house orientation the surface of antenna is equipped with protruding muscle, highly equals of protruding muscle the antenna with distance between the antenna house, during the use protecting sheathing is located the below. The utility model discloses make the distance between antenna house and the antenna can stably keep the integral multiple for the half-wavelength of electromagnetic wave signal to strengthen radar signal's transmission and receipt.

Description

Radar for enhancing signal transmission and reception

Technical Field

The utility model relates to an on-vehicle technical field especially relates to a strengthen radar of signalling and receipt.

Background

The general automobile is provided with the radar which can realize the functions of measuring obstacles, predicting collision, self-adaptive cruise control and the like, so that the driving difficulty is effectively reduced, the burden of a driver is reduced, and the occurrence probability of traffic safety accidents is reduced.

The PCB inside the radar is provided with an antenna used for transmitting and receiving signals, and the radar is further provided with an antenna housing used for protecting the radar antenna.

The radome is a component integrating the structure and the wave-transmitting function, besides the function of protecting the antenna. However, the distance between the antenna housing and the antenna is difficult to realize accurate control, and especially, the driving of the automobile is a dynamic process, and the distance between the antenna housing and the antenna is increasingly difficult to realize accurate control, so that the signal transmission and reception of the radar are unstable, and the stable driving of the automobile is influenced.

Therefore, a radar with enhanced signal transmission and reception is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a strengthen radar of signalling and receipt to solve the antenna house that exists among the prior art and the distance between the antenna is difficult to control, leads to signalling and receives unstable technical problem.

As the conception, the utility model adopts the technical proposal that:

the utility model provides a strengthen radar of signalling and receipt, includes protective housing, metal shielding shell, PCB board and the antenna house of superpose in proper order along first direction, the PCB board orientation the one side of antenna house is equipped with the antenna, the antenna with distance between the antenna house is the integer multiple of half-wavelength of electromagnetic wave signal, the antenna house orientation the surface of antenna is equipped with protruding muscle, the height of protruding muscle equals the antenna with distance between the antenna house, during the use protective housing is located the below.

Wherein the ribs are symmetrically arranged with respect to the antenna.

The protective shell comprises a protective shell and is characterized by further comprising a connecting terminal, wherein the connecting terminal is arranged on the side face of the protective shell.

Wherein, connecting terminal locates on the lateral surface of protective housing along width direction.

The antenna housing is made of a wave-transmitting material.

Wherein, be equipped with on the antenna house towards prevent slow-witted arch of PCB board.

Wherein, be equipped with on the PCB board with prevent slow-witted protruding complex prevent slow-witted hole.

And one surface of the PCB, which faces the metal shielding shell, is provided with an electronic element for forming an integrated circuit to perform signal processing.

The surface of the metal shielding shell, which is close to the PCB, is provided with a conductive adhesive tape, and the PCB is pressed on the metal shielding shell through the conductive adhesive tape.

And a positioning lug is arranged on the inner side wall of the protective shell and used for limiting the assembly height of the PCB.

The utility model provides a strengthen radar of signalling and receipt, establish the distance between antenna and the antenna house into the integral multiple of the half wavelength of electromagnetic wave signal, set up protruding muscle through the surface towards the antenna at the antenna house, and the height of controlling protruding muscle is the distance between antenna and the antenna house, be the integral multiple of the half wavelength of electromagnetic wave signal through the height of controlling protruding muscle promptly, thereby distance between accurate control antenna and the antenna house, even the car is at the driving in-process, the distance between antenna and the antenna house also can remain unchanged, thereby strengthen the transmission and the receipt of radar signal.

Drawings

Fig. 1 is an exploded schematic view of a radar for enhancing signal transmission and reception provided by an embodiment of the present invention;

FIG. 2 is a schematic structural view of another perspective of the protective enclosure of FIG. 1;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a schematic structural view of another perspective of the metal shielded enclosure of FIG. 1;

FIG. 5 is a schematic view of the structure of the PCB of FIG. 1;

fig. 6 is a schematic structural view of the antenna cover of fig. 1.

In the figure:

1. a protective housing; 11. waterproof air holes; 12. positioning the bump; 13. a waist-shaped groove; 14. positioning the convex column; 15. a horizontal positioning column; 16. an annular projection;

2. a metal shield case; 21. positioning the through hole; 22. a groove; 23. a heat dissipation boss;

3. a PCB board; 31. a fool-proof hole; 32. a horizontal positioning hole;

4. an antenna cover; 41. a rib is protruded; 42. a fool-proof projection;

5. a connection terminal;

6. a conductive adhesive tape.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In order to strengthen the emission and the reception of the radar to the signal, the embodiment provides a radar for strengthening the emission and the reception of the signal, and when the radar is installed on an automobile, the radar can effectively reduce the driving difficulty, reduce the burden of a driver and reduce the occurrence probability of traffic safety accidents.

Referring to fig. 1 to 6, in the present embodiment, a radar for enhancing signal transmission and reception includes a protective casing 1, a metal shielding shell 2, a PCB 3, and a radome 4, which are sequentially stacked in a first direction, wherein an antenna is disposed on a surface of the PCB 3 facing the radome 4, and the antenna is used for transmitting and receiving signals and detecting an environmental obstacle. The distance between the antenna and the radome 4 is an integral multiple of the half-wavelength of the electromagnetic wave signal. Specifically, in the present embodiment, the first direction is a vertical direction.

In order to be able to accurately control the distance between the antenna and the radome 4, in this embodiment, the radome 4 is provided with the convex rib 41 towards the surface of the antenna, the height of the convex rib 41 is equal to the distance between the antenna and the radome 4, and the protective casing 1 is located at the bottom during use. Furthermore, a hanging lug (not shown in the figure) with a mounting hole is arranged on the outer side surface of the protective shell 1 and is used for being connected with a radar bracket or directly connected with an automobile.

In this embodiment, the height of the rib 41 is controlled to be the integral multiple of the half-wavelength of the electromagnetic wave signal, and the rib 41 extends from the antenna housing 4 to abut against the PCB board 3, so that the distance between the antenna located on the PCB board 3 and the antenna housing 4 is always kept to be the integral multiple of the half-wavelength of the electromagnetic wave signal, thereby enhancing the transmission and reception of the radar to the signal.

Further, in the present embodiment, the ribs 41 are symmetrically disposed with respect to the antenna, because the more symmetrically the components on both sides of the antenna are disposed within the range of the antenna for transmitting signals, the more advantageous the transmission and reception of signals.

Specifically, the antenna cover 4 is to realize wave transmission in an area where an antenna receives and transmits electromagnetic wave signals, and to realize wave absorption performance of the electromagnetic wave signals in an area where the antenna does not receive and transmit electromagnetic wave signals, in order to realize the function, the material of the antenna cover 4 is a wave transmission material, such as PBT (Polybutylene terephthalate, saturated polyester for short) material + 30% glass fiber, and the PBT material is a high-crystalline thermoplastic plastic, and has good wave transmission performance. Of course, in other embodiments, the radome 4 may also be made of other wave-transparent materials, which are selected by the designer at his or her discretion, and not limited herein. Preferably, the thickness of the radome 4 is an integral multiple of a half wavelength of the electromagnetic wave signal. Optionally, the thickness of the radome 4 is 1-1.35 mm. Optionally, a wave-absorbing material is attached to a non-antenna electromagnetic wave signal receiving and transmitting region of the antenna housing 4, or a plastic piece with the wave-absorbing material is fixed by hot melting, so as to absorb the interfering electromagnetic waves emitted from the non-antenna region.

Further, the surface of the antenna housing 4 facing the PCB 3 is provided with fool-proof protrusions 42 facing the PCB 3, so that the antenna housing is convenient to accurately mount, and the condition of wrong mounting direction cannot occur.

Correspondingly, the PCB 3 is provided with a fool-proof hole 31 matching with the fool-proof protrusion 42.

Specifically, in this embodiment, protective housing 1 is plastic casing, and protective housing 1 and the formation of antenna house 4 lock hold the chamber, and metal shielding shell 2 and PCB board 3 superpose in holding the intracavity.

Specifically, in the present embodiment, the surface of the PCB 3 facing the metal shielding case 2 is provided with electronic components such as capacitors and resistors to form an integrated circuit for signal processing.

Further, in order to prevent the electronic components on the PCB 3 from generating heat for a long time due to continuous operation of the PCB 3 in the operation process of the radar, in this embodiment, the bottom of the protective casing 1 is provided with a plurality of waterproof air holes 11, preferably, the number of the waterproof air holes 11 is several. The waterproof air holes 11 are provided with waterproof air-permeable films, so that the waterproof effect is ensured while the air is permeable. Specifically, the waterproof breathable film is welded at the corresponding position of the protective shell 1 by ultrasonic welding or other welding methods. Further, an annular protrusion 16 is disposed on the welding surface of the waterproof breathable film, and optionally, the annular protrusion 16 is disposed around the waterproof breathable hole 11. After the waterproof breathable film is welded to the protective shell, the annular bulge 16 can support the waterproof breathable film, so that the waterproof breathable performance of the radar product is better.

The waterproof air holes 11 are arranged, so that the phenomenon that the air pressure in the accommodating cavity is too high due to long-time heating of electronic elements in the accommodating cavity, and devices in the accommodating cavity are damaged easily due to the too high air pressure, and the function of a radar is influenced can be prevented; the setting of waterproof ventilated membrane can avoid water to enter into from waterproof bleeder vent 11 and hold the intracavity back and destroy the device that holds the intracavity, influence the function of radar. Simultaneously, waterproof bleeder vent 11's setting also can assist the radar to dispel the heat.

Further, the automobile protection cover further comprises a connecting terminal 5, wherein the connecting terminal 5 is arranged on the side face of the protection cover 1 and used for being electrically connected with electrical equipment on an automobile. Preferably, in the present embodiment, the connection terminals 5 are provided on the side surfaces of the shield case 1 in the width direction, so that the connection terminals 5 can avoid the radiation range of the antenna. In the range of the antenna for transmitting signals, the more symmetrically the components on both sides of the antenna are arranged, the more beneficial the transmission and reception of signals are. Further, the hanging lug is also arranged on the side surface of the protective shell 1 along the width direction, so that the components on the two sides of the antenna are symmetrically arranged.

Of course, in other embodiments, if the connection terminal 5 needs to be disposed on the side surface of the protective housing along the length direction, the hanging lug is also disposed on the side surface of the protective housing 1 along the length direction, so that the components on both sides of the antenna are symmetrically disposed.

Further, a PIN needle used for transmitting signals is arranged on the connecting terminal 5, one end of the PIN needle can be electrically connected with the PCB 3, and the other end of the PIN needle can be electrically connected with electrical equipment on the automobile along with the connecting terminal 5. Preferably, in this embodiment, the PIN needle is fisheye PIN needle, and fisheye PIN needle has certain elastic deformation, can strengthen its self and the stability of being connected with PCB board 3 electricity, is favorable to the transmission of signal.

Further, in the present embodiment, the PIN is detachably connected to the PCB 3. The PCB 3 is provided with a jack which is electrically connected with the PIN PIN. So set up, be convenient for PCB board 3 detect and 1 die sinking of protective housing separately go on simultaneously.

Furthermore, the inner side wall of the protective casing 1 is provided with a positioning bump 12 for limiting the assembly height of the PCB board 3. The PCB 3 is used as a core device of the radar, in order to position the PCB 3, in this embodiment, the PCB 3 is horizontally limited by a horizontal positioning column 15 on the protective housing 1, and correspondingly, a horizontal positioning hole 32 matched with the horizontal positioning column 15 is arranged on the PCB 3; a positioning lug 12 is arranged on the inner side wall of the protective shell 1 and used for limiting the assembly height of the PCB 3; the horizontal positioning column 15 and the positioning lug 12 are arranged, so that the assembly precision of the PCB 3 is effectively guaranteed, and further, the distance between the antenna on the PCB 3 and the antenna housing 4 can be effectively controlled. The PCB 3 is connected with the connecting terminal 5 through being plugged with the PIN PIN, and the transmission of signals is completed.

A waist-shaped groove 13 extending along the height direction of the waterproof breathable radar is arranged in the positioning bump 12 and used for a mechanical arm to grab the protective shell 1; furthermore, the depth of the waist-shaped groove 13 is the same as the height of the positioning bump 12, so that on one hand, the overall thickness of the waterproof breathable radar can be kept uniform, the stress is reduced, and the manufacturing is convenient; on the other hand, the overall weight of the waterproof breathable radar can be reduced.

The metal shielding case 2 is used for electromagnetic shielding of the PCB board 3 and the outside below the shield case 1. Specifically, the metal shield case 2 is positioned and placed on the bottom surface of the shield case 1. In order to limit the metal shielding case 2, in this embodiment, the protective housing 1 is provided with a positioning protrusion 14, and the metal shielding case 2 is provided with a positioning through hole 21 matched with the positioning protrusion 14. Preferably, the positioning protruding column 14 is formed by plastic, and after the positioning protruding column 14 passes through the positioning through hole 21, the positioning protruding column 14 can be thermally melted to form a spherical clamping protrusion to limit and fix the metal shielding shell 2, so that the metal shielding shell 2 is prevented from shifting in the driving process of the automobile.

Further, a groove 22 is formed at a portion of the metal shielding shell 2 corresponding to the waterproof vent 11 to form a gap with the protective housing 1. The setting in this clearance can prevent to hold the outside Static in chamber and hold the intracavity through the entering of waterproof bleeder vent 11, prevents that Static from destroying the function of radar, can guarantee simultaneously that the radar passes through the ESD (Electro-Static-Discharge, electrostatic Discharge) experiment.

Further, the metal shielding shell 2 is provided with a heat dissipation structure, such as a heat dissipation boss 23, which assists in dissipating heat of electronic components on the PCB 3; the heat dissipation boss 23 is disposed corresponding to the electronic component on the PCB board 3. Preferably, a heat conducting paste or a heat conducting glue can be placed on the heat dissipation boss 23, and heat of the electronic component on the PCB 3 can be conducted to the metal shielding case 2 through the heat conducting paste or the heat conducting glue, so that heat dissipation of the electronic component on the PCB 3 is accelerated, and local temperature of the electronic component on the PCB 3 is prevented from being too high.

Further, in the present embodiment, the upper surface of the metal shielding shell 2 is provided with the conductive rubber strip 6. The conductive adhesive tape 6 has elasticity and conductivity, and the PCB 3 is sealed, attached and pressed on the metal shielding shell 2 through the conductive adhesive tape 6.

In this embodiment, after protective housing 1, metal shielding shell 2, PCB board 3 and antenna house 4 stacked in proper order, with antenna house 4 and protective housing 1 sealing connection. Optionally, the sealing connection between the radome 4 and the protective casing 1 may be performed by disposing a sealing ring at the threaded connection position after the threaded connection, performing laser welding, glue filling connection, or foam material connection.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a strengthen radar of signalling and receipt, its characterized in that includes protecting sheathing (1), metallic shield shell (2), PCB board (3) and antenna house (4) of superpose in proper order along first direction, PCB board (3) orientation the one side of antenna house (4) is equipped with the antenna, the antenna with distance between antenna house (4) is the integral multiple of half-wavelength of electromagnetic wave signal, antenna house (4) orientation the surface of antenna is equipped with protruding muscle (41), the height of protruding muscle (41) equals the antenna with distance between the antenna house (4), during the use protecting sheathing (1) is located the below.

2. A radar with enhanced signal transmission and reception according to claim 1, wherein said ribs (41) are symmetrically arranged with respect to said antenna.

3. Radar for enhanced signal transmission and reception according to claim 1, characterised by further comprising a connection terminal (5), the connection terminal (5) being provided at a side of the protective casing (1).

4. Radar for enhanced signal transmission and reception according to claim 3, characterised in that the connection terminal (5) is provided on the side of the protective casing (1) in the width direction.

5. Radar for enhanced signal transmission and reception according to any of claims 1 to 4, characterised in that the material of the radome (4) is a wave-transparent material.

6. Radar for enhanced signal transmission and reception according to any of claims 1 to 4, characterised in that the radome (4) is provided with a fool-proof protrusion (42) towards the PCB board (3).

7. Radar for enhanced signal transmission and reception according to claim 6, characterised in that the PCB board (3) is provided with fool-proof holes (31) cooperating with the fool-proof protrusions (42).

8. Radar for enhanced signal transmission and reception according to any of claims 1 to 4, characterised in that the side of the PCB (3) facing the metal shielding shell (2) is provided with electronic components to form an integrated circuit for signal processing.

9. A radar for intensifying signal transmission and reception according to any one of claims 1 to 4, wherein the surface of said metallic shielding case (2) close to said PCB board (3) is provided with an electrically conductive adhesive tape (6), and said PCB board (3) is press-fitted on said metallic shielding case (2) through said electrically conductive adhesive tape (6).

10. Radar for enhanced signal transmission and reception according to any of claims 1 to 4, characterised in that locating lugs (12) are provided on the inner side walls of the protective casing (1) to limit the assembly height of the PCB (3).

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