A foldable array antenna device for radar

Abstract

This utility model provides a foldable array antenna device for radar, relating to the field of radar antennas. It includes a housing, a connecting rod at the bottom of the housing, a connecting plate fixed to the bottom end of the connecting rod, antennas evenly arranged on the outer side of the housing, a folding mechanism inside the housing, and an angle adjustment mechanism at the bottom of the housing. The antennas are connected to the outer side of the folding mechanism, and the connecting rods are connected to the bottom of the angle adjustment mechanism. Through the folding mechanism, the starting of a drive motor rotates a first screw, causing a moving block to slide outside a first limiting rod, moving a first fixed seat, thereby deflecting a connecting rod, which in turn deflects a third fixed seat, causing a rotating rod to deflect around a second fixed seat, thus folding the antenna. This improves stability during use, facilitates folding, makes the device easy to carry, and enhances its practicality.

Description

Technical Field

[0001] This utility model is specifically a foldable array antenna device for radar, belonging to the field of radar antenna technology. Background Technology

[0002] A radar is a device used to radiate and receive electromagnetic waves and determine its detection direction. When transmitting, a radar must concentrate its energy to radiate in the direction it needs to illuminate; and when receiving, it should receive echoes only in the direction of detection, simultaneously distinguishing the target's azimuth and elevation, or one of them. Of the three coordinates (azimuth, elevation, and range) used by radar to measure the target's position, the measurement of two coordinates (azimuth and elevation) is directly related to the antenna's performance. Therefore, antenna performance is more important for radar equipment than for other electronic equipment (such as communication equipment). There are many types of radar antennas, which, according to their structural form, are mainly divided into two categories: reflector antennas and array antennas.

[0003] Chinese Patent Publication No. CN208889824U discloses a foldable antenna, including a telescopic frame and a movable rod. The telescopic frame is provided with a telescopic groove that cooperates with the movable rod and a positioning component for positioning the movable rod. The movable rod is provided with a limiting component that cooperates with the positioning component. A pair of first vibrating arms are rotatably connected to the end of the movable rod away from the telescopic frame. The movable rod is provided with a first fixing component that limits the first vibrating arms after they are unfolded. This utility model saves space and is easy to carry after folding, and the folding and unfolding operation is simple and easy to perform.

[0004] As can be seen from the above patent, the patent uses a torsion spring to limit the unfolded antenna arm. Since the antenna is used outdoors, this reduces the stability of the antenna during use. Furthermore, after folding, the stored antenna cannot be fixed for carrying, which makes it easy for it to unfold under the action of the torsion spring during carrying. This makes it inconvenient to carry and reduces the practicality of the device. Utility Model Content

[0005] The purpose of this invention is to provide a foldable array antenna device for radar in order to solve the above-mentioned problems. This addresses the issue in the prior art where torsion springs are used to limit the unfolded antenna vibrator arm, which reduces the stability of the antenna during outdoor use.

[0006] This utility model is achieved through the following technical solution: a foldable array antenna device for radar, including a housing, a connecting rod at the bottom of the housing, a connecting plate fixed at the bottom end of the connecting rod, antennas evenly arranged on the outer side of the housing, a folding mechanism inside the housing, an angle adjustment mechanism at the bottom of the housing, the antennas connected to the outer side of the folding mechanism, and the connecting rod connected to the bottom of the angle adjustment mechanism.

[0007] Preferably, the folding mechanism includes a drive motor fixed to the bottom edge of the inner cavity of the outer shell, a first screw fixed to the output shaft end of the drive motor, movable blocks evenly screwed to the outer side wall of the first screw, a first fixed seat fixed to the middle of both sides of the movable block, a connecting rod rotatably connected inside the first fixed seat, a second fixed seat evenly fixed to the outer side wall of the outer shell, a rotating rod rotatably connected inside the second fixed seat, a mounting seat evenly fixed to the outer side wall of the rotating rod, and a third fixed seat fixed to the middle of the outer side wall of the rotating rod.

[0008] Preferably, the folding mechanism further includes a first limiting rod fixed at the top between the two sides of the inner cavity of the outer shell, and through slots are uniformly opened on both sides of the outer shell.

[0009] Preferably, the movable block slides on the outer wall of the first limiting rod to limit the movable block so that it can only move in a straight line, and the antenna is fixed inside the mounting base.

[0010] Preferably, one end of the connecting rod rotates inside the third fixed seat, and when the connecting rod deflects, it drives the third fixed seat to deflect, and the connecting rod is located inside the through groove.

[0011] Preferably, the angle adjustment mechanism includes connecting seats symmetrically fixed to the bottom of the housing, a deflection plate rotatably mounted inside one of the connecting seats, a fixing plate fixed to the top of the connecting rod, a connecting block fixed to the top edge of the fixing plate, two mounting plates fixed to the top of the fixing plate, a second screw rotatably passing through the middle between the opposite sides of the two mounting plates, a servo motor fixed to the other side of the top of the fixing plate, a movable seat screwed to the outside of the second screw, and a second limiting rod symmetrically fixed between the opposite sides of the two mounting plates.

[0012] Preferably, the output shaft end of the servo motor is fixed to one end of the second screw to facilitate the rotation of the second screw. The movable seat slides on the outside of the second limiting rod to facilitate the movable seat entering the limiting position and making the movable seat move linearly. The deflection plate rotates inside the movable seat, and the connecting block rotates inside the other connecting seat.

[0013] This invention provides a foldable array antenna device for radar, which has the following advantages:

[0014] 1. This application, through the setting of the folding mechanism, drives the first screw to rotate by starting the drive motor, causing the moving block to slide outside the first limiting rod, causing the first fixed seat to move, thereby causing the connecting rod to deflect, driving the third fixed seat to deflect, thereby causing the rotating rod to deflect around the second fixed seat, so that the antenna is folded, thereby improving the stability during use, while also making it easy to fold and carry the device, thus improving the practicality of the device.

[0015] 2. This application, through the setting of the angle adjustment mechanism, drives the second screw to rotate by starting the servo motor, so that the moving seat moves outside the second limit rod, thereby causing the deflection plate to deflect in the vertical direction, lifting the outer shell, so that the connecting block deflects around a connecting seat, changing the angle of the outer shell, and thus changing the angle of the antenna, making it easier to adjust the transmission and reception direction and improving the practicality of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the folding mechanism structure of this utility model;

[0018] Figure 3 This is an enlarged view of the angle adjustment mechanism structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the folded structure of this utility model.

[0020] [Explanation of Key Component Symbols]

[0021] 1. Outer shell;

[0022] 2. Connecting rod; 201. Connecting plate;

[0023] 3. Antenna;

[0024] 4. Folding mechanism; 401. Drive motor; 402. First screw; 403. Moving block; 404. First fixed seat; 405. Connecting rod; 406. Second fixed seat; 407. Rotating rod; 408. Mounting seat; 409. Third fixed seat; 410. First limiting rod; 411. Through slot;

[0025] 5. Angle adjustment mechanism; 501. Connecting seat; 502. Deflection plate; 503. Fixing plate; 504. Connecting block; 505. Mounting plate; 506. Second screw; 507. Servo motor; 508. Moving seat; 509. Second limit rod. Detailed Implementation

[0026] This utility model provides a foldable array antenna device for radar.

[0027] Please see Figure 1 The device includes an outer shell 1, a connecting rod 2 at the bottom of the outer shell 1, a connecting plate 201 fixed at the bottom of the connecting rod 2, antennas 3 evenly arranged on the outer side of the outer shell 1, a folding mechanism 4 inside the outer shell 1, an angle adjustment mechanism 5 at the bottom of the outer shell 1, antennas 3 connected to the outer side of the folding mechanism 4, and the connecting rod 2 connected to the bottom of the angle adjustment mechanism 5.

[0028] Please refer to it again. Figure 2 The folding mechanism 4 includes a drive motor 401 fixed to the bottom edge of the inner cavity of the outer shell 1. A first screw 402 is fixed to the end of the output shaft of the drive motor 401. Moving blocks 403 are evenly screwed onto the outer side wall of the first screw 402. First fixing seats 404 are fixed to the middle of both sides of the moving blocks 403. A connecting rod 405 is rotatably connected inside the first fixing seat 404. A second fixing seat 406 is evenly fixed to the outer side wall of the outer shell 1. A rotating rod 407 is rotatably connected inside the second fixing seat 406. A mounting seat 408 is evenly fixed to the outer side wall of the rotating rod 407. A third fixing seat 409 is fixed to the middle of the outer side wall of the rotating rod 407. The folding mechanism 4 also includes a first limiting rod 410 fixed to the top between the two sides of the inner cavity of the outer shell 1. The two sides of the outer shell 1 are evenly connected through the first limiting rod 410. A through slot 411 is provided; a movable block 403 slides on the outer wall of the first limiting rod 410, and the antenna 3 is fixed inside the mounting base 408; one end of the connecting rod 405 rotates inside the third fixed base 409, and the connecting rod 405 is located inside the through slot 411; through the setting of the folding mechanism 4, the starting of the drive motor 401 drives the first screw 402 to rotate, causing the movable block 403 to slide outside the first limiting rod 410, causing the first fixed base 404 to move, thereby causing the connecting rod 405 to deflect, driving the third fixed base 409 to deflect, thereby causing the rotating rod 407 to deflect around the second fixed base 406, so that the antenna 3 is folded, thereby improving the stability during use, and at the same time facilitating folding, making it easy to carry the device, and improving the practicality of the device.

[0029] Please refer to it again. Figure 3The angle adjustment mechanism 5 includes a connecting seat 501 symmetrically fixed to the bottom of the housing 1. A deflection plate 502 rotates inside one of the connecting seats 501. A fixing plate 503 is fixed to the top of the connecting rod 2. A connecting block 504 is fixed to the top edge of the fixing plate 503. Two mounting plates 505 are fixed to the top of the fixing plate 503. A second screw 506 rotates through the middle between the opposite sides of the two mounting plates 505. A servo motor 507 is fixed to the other side of the top of the fixing plate 503. A movable seat 508 is screwed to the outside of the second screw 506. A second limiting rod 509 is symmetrically fixed between the opposite sides of the two mounting plates 505. The output shaft end of the servo motor 507... Fixed to one end of the second screw 506, the movable seat 508 slides on the outside of the second limiting rod 509, the deflection plate 502 rotates inside the movable seat 508, and the connecting block 504 rotates inside another connecting seat 501; through the setting of the angle adjustment mechanism 5, the second screw 506 is driven to rotate by the start of the servo motor 507, so that the movable seat 508 moves outside the second limiting rod 509, thereby causing the deflection plate 502 to deflect in the vertical direction, lifting the outer shell 1, so that the connecting block 504 deflects around a connecting seat 501, changing the angle of the outer shell 1, and thus changing the angle of the antenna 3, which facilitates the adjustment of the transmission and reception direction and improves the practicality of the device.

[0030] When using this utility model:

[0031] Working principle: When the antenna 3 needs to be folded, the drive motor 401 is started, which drives the first screw 402 to rotate, causing the moving block 403 to slide outside the first limit rod 410, and the first fixed seat 404 to move. This causes the connecting rod 405 to deflect, which in turn causes the third fixed seat 409 to deflect, thereby causing the rotating rod 407 to deflect around the second fixed seat 406, thus folding the antenna 3 and reducing the size of the device for easy folding. When the transmit and receive angle of the antenna 3 needs to be adjusted, the servo motor 507 is started, which drives the second screw 506 to rotate, causing the moving seat 508 to move outside the second limit rod 509. This causes the deflection plate 502 to deflect in the vertical direction, lifting the outer shell 1, thereby causing the connecting block 504 to deflect around a connecting seat 501, changing the angle of the outer shell 1, and thus changing the angle of the antenna 3.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A foldable array antenna device of radar, comprising a shell (1), the bottom of the shell (1) is provided with a connecting rod (2), the bottom end of the connecting rod (2) is fixed with a connecting plate (201), the outer side of the shell (1) is uniformly provided with an antenna (3), characterized in that: The outer shell (1) is provided with a folding mechanism (4) inside, and an angle adjustment mechanism (5) is provided at the bottom of the outer shell (1). The antenna (3) is connected to the outside of the folding mechanism (4), and the connecting rod (2) is connected to the bottom of the angle adjustment mechanism (5).

2. A radar foldable array antenna device according to claim 1, characterized in that: The folding mechanism (4) includes a drive motor (401) fixed to the bottom edge of the inner cavity of the outer shell (1). The output shaft end of the drive motor (401) is fixed with a first screw (402). A moving block (403) is evenly screwed onto the outer side wall of the first screw (402). A first fixing seat (404) is fixed at the middle of both sides of the moving block (403). A connecting rod (405) rotates inside the first fixing seat (404). A second fixing seat (406) is evenly fixed on the outer side wall of the outer shell (1). A rotating rod (407) rotates inside the second fixing seat (406). A mounting seat (408) is evenly fixed on the outer side wall of the rotating rod (407). A third fixing seat (409) is fixed at the middle of the outer side wall of the rotating rod (407).

3. A radar foldable array antenna device according to claim 2, characterized in that: The folding mechanism (4) also includes a first limiting rod (410) fixed at the top between the two sides of the inner cavity of the outer shell (1), and through slots (411) are evenly provided on both sides of the outer shell (1).

4. A radar foldable array antenna device according to claim 3, characterized in that: The movable block (403) slides on the outer wall of the first limiting rod (410), and the antenna (3) is fixed inside the mounting base (408).

5. A radar foldable array antenna device according to claim 3, characterized in that: One end of the connecting rod (405) rotates inside the third fixed seat (409), and the connecting rod (405) is located inside the through groove (411).

6. The radar foldable array antenna apparatus of claim 1, wherein: The angle adjustment mechanism (5) includes a connecting seat (501) symmetrically fixed to the bottom of the outer shell (1), a deflection plate (502) rotating inside one of the connecting seats (501), a fixing plate (503) fixed to the top of the connecting rod (2), a connecting block (504) fixed to the top edge of the fixing plate (503), two mounting plates (505) fixed to the top of the fixing plate (503), a second screw (506) rotating through the middle between the opposite sides of the two mounting plates (505), a servo motor (507) fixed to the other side of the top of the fixing plate (503), a moving seat (508) screwed to the outside of the second screw (506), and a second limiting rod (509) symmetrically fixed between the opposite sides of the two mounting plates (505).

7. A radar foldable array antenna device according to claim 6, characterized in that: The output shaft end of the servo motor (507) is fixed to one end of the second screw (506), the movable seat (508) slides on the outside of the second limiting rod (509), the deflection plate (502) rotates inside the movable seat (508), and the connecting block (504) rotates inside another connecting seat (501).

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