An antenna folding mechanism

Abstract

The utility model relates to antenna technical field more specifically is a kind of antenna foldable mechanism. Utilize electric cylinder drive additional antenna component to act, make V type unfolded antenna structure, close fold and be horizontal state, rotate antenna simultaneously, so that antenna I and antenna II are from upper and lower two sides, convert to front and rear two sides, and the protective structure, i.

Description

Technical Field

[0001] This utility model relates to the field of antenna technology, and more specifically to a foldable antenna mechanism. Background Technology

[0002] Foldable antennas, when unfolded, can better adapt to terrain and building obstructions, ensuring signal continuity and stability, while also increasing gain, signal transmission power, and communication quality. However, unfolded antennas also increase their footprint and range. In windy weather, the extended and unfolded antenna may deform due to wind loads. Furthermore, in low-temperature environments, hailstones, formed from frozen water droplets in cold air, possess considerable speed and impact force. When an antenna is exposed to hail, the hailstones may directly impact it, causing physical damage to the antenna surface or structure. However, given the antenna's high installation position, folding it up to reduce stress is difficult, and the large unfolded area makes installing a large protective cover impractical and also affects signal strength. Utility Model Content

[0003] This invention provides a foldable antenna mechanism, the purpose of which is to facilitate folding.

[0004] The above objectives are achieved through the following technical solutions:

[0005] A foldable antenna mechanism includes a base, a guide groove on the base, a guide rail slidably connected to the base in the guide groove, a support tube fixed to the guide rail, a linear actuator fixed to the right end of the base, the linear actuator being used to drive the support tube to move left and right, a central antenna bracket fixed to the left end of the support tube, and an antenna I fixed to the central antenna bracket.

[0006] It also includes an additional antenna assembly, which includes a side antenna bracket, on which antenna II is fixedly mounted, and a shaft is fixedly mounted at the right end of the side antenna bracket, on which a transmission component I is fixedly mounted; the shaft is rotatably connected to the base.

[0007] A transmission component II is fixedly connected to the central antenna support. Transmission component II is connected to transmission component I. When the central antenna support moves linearly, transmission component II drives transmission component I to rotate around the axis of the shaft. Transmission component I drives the side antenna supports to rotate around the axis of the shaft, so as to unfold or move closer to the central antenna support.

[0008] The transmission component I is a gear.

[0009] Transmission component II is a rack; or, transmission component I is a friction wheel and transmission component II is a plate.

[0010] The support tube can only move linearly left and right along the guide groove.

[0011] The linear actuator is a telescopic cylinder with its movable end facing left. The outer shell of the telescopic cylinder is fixed to the right end of the base. The movable end of the telescopic cylinder passes through the base from right to left and is fixed to the right end of the support tube.

[0012] The telescopic cylinder is an electric telescopic cylinder.

[0013] The side antenna brackets can be parallel to the center antenna bracket.

[0014] Antenna I is arranged in a linear array from left to right on the central antenna support, and antenna II is arranged in a linear array from left to right on the side antenna supports along the extension direction of the side antenna supports.

[0015] Antenna I and Antenna II extend in the front-to-back direction. The middle part of Antenna I is on the central antenna support, and the middle part of Antenna II is on the side antenna support.

[0016] Two protective railings are fixed to the base. A motor is installed at the right end of the telescopic cylinder, with the motor's output shaft facing left. The motor's output shaft is fixed to the right end of the telescopic cylinder. When the central antenna support and the side antenna support are parallel, the two protective railings respectively block the front and rear sides of antenna I and antenna II. The motor can drive the telescopic cylinder to rotate 90° around the motor's output shaft each time.

[0017] The protective fence is made of aluminum alloy or plastic.

[0018] The beneficial effects of this utility model's foldable antenna mechanism are as follows:

[0019] An electric cylinder is used to drive the additional antenna assembly to move, causing the V-shaped antenna structure to fold together and become horizontal. At the same time, the antenna is rotated, so that antenna I and antenna II are moved from the top and bottom sides to the front and back sides. The protective structure, namely the upper protective fence, can shield the top of antenna I and antenna II, while the lower protective fence can support the bottom of antenna I and antenna II, thereby achieving protection and minimizing the weight and size of the protective structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a foldable antenna mechanism when unfolded.

[0021] Figure 2 This is a structural diagram of the base, guide rail, support tube, rack, and telescopic cylinder.

[0022] Figure 3 A schematic diagram of the side antenna support, antenna II, shaft, and gear;

[0023] Figure 4 This is a schematic diagram showing the two protective barriers located on the upper and lower sides of antenna I and antenna II, respectively, after the additional antenna components are brought together.

[0024] In the picture:

[0025] Base 11; guide rail 12; support tube 13; rack 14; telescopic cylinder 15; central antenna bracket 16; antenna I 17; side antenna bracket 21; antenna II 22; shaft 23; gear 24; protective fence 31; motor 32. Detailed Implementation

[0026] A foldable antenna mechanism includes a base 11 with a horizontally arranged guide groove on the base 11. A guide rail 12 slidably connected to the base 11 is fitted inside the guide groove and can only slide left and right within the guide groove. A support tube 13 is fixed to the guide rail 12. A linear actuator is fixed to the right end of the base 11 and is used to drive the support tube 13 to move left and right. A central antenna bracket 16 is fixed to the left end of the support tube 13 and an antenna I 17 is fixed to the central antenna bracket 16. The guide rail 12 increases the stability of the long central antenna bracket 16 when it slides.

[0027] It also includes an additional antenna assembly, which includes a side antenna bracket 21, an antenna II 22 fixedly connected to the side antenna bracket 21, a shaft 23 fixedly connected to the right end of the side antenna bracket 21, and a transmission component I fixedly connected to the shaft 23; preferably, two additional antenna assemblies are provided in a mirror image symmetrically.

[0028] It also includes transmission component II, which works in conjunction with transmission component I. Therefore, the quantity and position of the two correspond. Transmission component II is fixedly connected to both the upper and lower ends of the central antenna support 16. The two shafts 23 are rotatably connected to the upper and lower ends of the right side of the base 11, and the two transmission components II are respectively connected to the two transmission components I.

[0029] Preferably, the linear actuator is an electric telescopic cylinder 15 with its movable end facing left. The housing of the telescopic cylinder 15 is fixed to the right end of the base 11, and the movable end of the telescopic cylinder 15 passes through the base 11 from right to left. The movable end of the telescopic cylinder 15 is fixed to the right end of the support tube 13.

[0030] When the central antenna support 16 moves linearly, the transmission component II drives the transmission component I to rotate around the axis of shaft 23. The transmission component I drives the side antenna support 21 to rotate around the axis of shaft 23, so as to unfold or move closer to the central antenna support 16. The unfolding range of the side antenna support 21 relative to the central antenna support 16 is 0°-90°. When it is 0°, the side antenna support 21 is parallel to the central antenna support 16.

[0031] In this configuration, transmission component I is a gear 24, and transmission component II is a rack 14, with gear 24 meshing with rack 14. Alternatively, transmission component I is a friction wheel, and transmission component II is a plate, with the friction wheel driving the transmission through friction with the plate. Therefore, the two auxiliary antenna assemblies can be driven to fold closer together or unfold further away from the central antenna support 16 using only the telescopic cylinder 15.

[0032] Furthermore, to address the issue of antenna impact without using a large, enveloping protective cover, the following measures are taken: Two protective grilles 31 are fixedly attached to the base 11. A motor 32 is installed at the right end of the telescopic cylinder 15. The motor 32 can be an asynchronous motor with a reducer. The motor 32 is fixedly positioned as a truss, with its output shaft facing left and fixed to the right end of the telescopic cylinder 15. When the central antenna support 16 and the side antenna support 21 are parallel, the two protective grilles 31 respectively shield antenna I 17 and antenna II. On the front and rear sides of 22, motor 32 can drive telescopic cylinder 15 to rotate 90° around the output shaft of motor 32. Therefore, telescopic cylinder 15 drives base 11 to rotate synchronously. At this time, two protective fences 31 are located on the upper and lower sides of antenna I 17 and antenna II 22 respectively, realizing two rectangular thin-walled structures to shield and support antenna I 17 and antenna II 22. The upper protective fence 31 can shield the top of antenna I 17 and antenna II 22, and the lower protective fence 31 can support the bottom of antenna I 17 and antenna II 22. In order to minimize the weight and size of the protective structure, the protective fence 31 is made of aluminum alloy or plastic.

Claims

1. A foldable antenna mechanism, comprising a base (11), a support tube (13) provided at the left end of the base (11), a linear actuator fixedly connected to the right end of the base (11), the linear actuator being used to drive the support tube (13) to move left and right, a central antenna bracket (16) fixedly connected to the left end of the support tube (13), and an antenna I (17) fixedly connected to the central antenna bracket (16). It also includes an additional antenna assembly, characterized in that, The additional antenna assembly includes a side antenna bracket (21), on which antenna II (22) is fixedly connected, and a shaft (23) is fixedly connected to the right end of the side antenna bracket (21), and a transmission component I is fixedly connected to the shaft (23); the shaft (23) is rotatably connected to the base (11); A transmission component II is fixedly connected to the central antenna support (16). The transmission component II is connected to the transmission component I. When the central antenna support (16) moves linearly, the transmission component II drives the transmission component I to rotate around the axis of the shaft (23). The transmission component I drives the side antenna support (21) to rotate around the axis of the shaft (23) so as to unfold or move closer to the central antenna support (16). Two protective railings (31) are fixed on the base (11). The linear actuator is a telescopic cylinder (15) with its movable end facing left. The outer shell of the telescopic cylinder (15) is fixed to the right end of the base (11), and the movable end of the telescopic cylinder (15) is fixed to the right end of the support tube (13). A motor (32) is provided at the right end of the telescopic cylinder (15). The output shaft of the motor (32) is set to the left, and the output shaft of the motor (32) is fixed to the right end of the telescopic cylinder (15). The extension directions of antenna I (17) and antenna II (22) are front and back. When the central antenna support (16) and the side antenna support (21) are parallel, the two protective fences (31) respectively block the front and back sides of antenna I (17) and antenna II (22). The motor (32) can drive the telescopic cylinder (15) to rotate 90° around the output shaft of the motor (32). Therefore, the telescopic cylinder (15) drives the base (11) to rotate synchronously. At this time, the two protective fences (31) are located on the upper and lower sides of antenna I (17) and antenna II (22) respectively.

2. The foldable antenna mechanism according to claim 1, characterized in that, The transmission component I is a gear (24), and the transmission component II is a rack (14); or, the transmission component I is a friction wheel, and the transmission component II is a plate.

3. The foldable antenna mechanism according to claim 1, characterized in that, A horizontal guide groove is provided on the base (11), and a guide rail (12) is slidably connected to the base (11) in the guide groove. The guide rail (12) is fixed to the support tube (13).

4. The foldable antenna mechanism according to claim 1, characterized in that, The telescopic cylinder (15) is an electric telescopic cylinder.

5. The foldable antenna mechanism according to claim 1, characterized in that, Antenna I (17) is arranged in a linear array from left to right on the central antenna support (16), and antenna II (22) is arranged in a linear array from left to right along the extension direction of the side antenna support (21) on the side antenna support (21).

6. The foldable antenna mechanism according to claim 5, characterized in that, The middle part of antenna I (17) is on the central antenna support (16), and the middle part of antenna II (22) is on the side antenna support (21).

7. The foldable antenna mechanism according to claim 1, characterized in that, The protective fence (31) is made of aluminum alloy or plastic.

Images