Foldable radio and television antenna

Abstract

The utility model discloses a foldable radio and television antenna, which comprises a supporting base and an antenna folding mechanism arranged above the supporting base, a first connecting frame is rotatably connected between two antenna main bodies, the inner wall of the first connecting frame is rotatably connected with a connecting shaft, the bottom of the connecting shaft is fixedly provided with a screw rod, and the screw rod is rotatably connected with the first connecting frame. Movable frames are slidably connected to the inner walls of the two limiting sliding grooves, folding connecting rods are rotatably connected to the inner walls of the two movable frames, and a second connecting frame is in threaded connection to the outer wall of the screw rod; when the antenna needs to be folded in rainy and snowy days to adjust received signals, the driving screw rotates to enable the second connecting frame to ascend and descend to drive the folding connecting rod to be folded so as to push the antenna body to rotate on the first connecting frame to be contracted and folded, and when the surface of the antenna is covered with rain and snow, the antenna body can be automatically folded and shaken off, and damage caused by excessive pressure is prevented; the signal receiving angle can be automatically adjusted, a user does not need to climb to an outdoor high place to manually fold, and the use convenience of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of broadcast television antenna, concretely is a kind of foldable broadcast television antenna. BACKGROUND

[0002] Antenna is a transformer, it transforms the guided wave that propagates on transmission line into electromagnetic wave that propagates in unbounded medium (usually free space), or carries out opposite transformation.In radio equipment, it is used to transmit or receive electromagnetic wave component.Wireless communication, broadcasting, television, radar, navigation, electronic countermeasure, remote sensing, radio astronomy and other engineering systems, utilize electromagnetic wave to transmit information, rely on antenna to work, and broadcast television antenna is one of the most frequently used antennas, with the development of science and technology, its structure and use function are constantly improved, so that it is more convenient to use.

[0003] The existing television broadcast antenna in use, to ensure the strength of its received signal, generally will be installed in the high place of outdoor, it is convenient to compatible signal source, when encountering some rain and snow and other bad weather, since antenna receiving signal needs to be unfolded and expanded receiving area, in bad weather, it needs to be folded and processed, and when signal strength is poor, the antenna also needs to be folded and swung to adjust signal strength, but ordinary television antenna is folded and processed manually, and the user needs to climb to the high place of outdoor to process every time, which is very troublesome to operate, therefore, the design scheme provides a foldable broadcast television antenna. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of foldable broadcast television antenna to solve the problems in the above background technology.To achieve the above purpose, the utility model provides a kind of foldable broadcast television antenna, including support base and antenna folding mechanism installed on the upper support base;

[0005] The antenna folding mechanism includes two antenna main bodies, a first connecting frame is rotatably connected between the two antenna main bodies, a connecting shaft is rotatably connected to the inner wall of the first connecting frame, a screw rod is fixed to the bottom of the connecting shaft, a limit sliding slot is formed in one side of the bottom of the two antenna main bodies, a movable frame is slidably connected to the inner wall of the two limit sliding slots, a folding connecting rod is rotatably connected to the inner wall of the two movable frames, a second connecting frame is threadedly connected to the outer wall of the screw rod, a screw hole is formed in the top of the second connecting frame, and the outer wall of the screw rod is threadedly connected with the inner wall of the screw hole.

[0006] In one example, the outer wall of one end of the two folding connecting rods is rotatably connected with the inner wall of both ends of the second connecting frame, and a limiting frame is fixed to one side of the first connecting frame.

[0007] In one example, the inner wall of the first connecting frame is provided with an annular sliding groove, the outer wall of the connecting shaft is fixedly provided with a limiting ring, and the outer wall of the limiting ring is rotationally connected with the inner wall of the annular sliding groove.

[0008] In one example, the top of the supporting base is provided with a protective shell, the bottom of the limiting frame is fixedly connected with one side of the protective shell, and the top of the supporting base is provided with a motor inside the protective shell.

[0009] In one example, one end of the screw rod is fixedly connected with the output end of the motor through the inner wall of the protective shell, and the top of the protective shell is provided with a sealing flange, and the inner wall of the sealing flange is in contact with the outer wall of the screw rod.

[0010] In one example, one side of the supporting base is fixedly provided with a control switch, and the motor is electrically connected with an external power supply through the control switch.

[0011] Compared with the prior art, the antenna folding mechanism is provided, in the use process, when rain and snow weather is encountered or the antenna needs to be folded to adjust the received signal, the driving screw rod is rotated to drive the second connecting frame to ascend and drive the folding connecting rod to fold to push the antenna main body to rotate on the first connecting frame to be shrunk and folded, when the surface is covered with rain and snow, the antenna can be automatically folded and shaken off, over-pressing damage is prevented, the angle of the received signal can be automatically adjusted, the user does not need to climb to a high outdoor place to manually fold, and the convenience of using the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the utility model as a whole;

[0013] Figure 2 It is a structural schematic view of the antenna folding mechanism of the utility model;

[0014] Figure 3 It is a structural schematic view of the inside of the first connecting frame of the utility model;

[0015] Figure 4 It is a structural schematic view of the inside of the protective shell of the utility model.

[0016] In the drawing: 1, supporting base; 2, antenna folding mechanism; 201, antenna main body; 202, first connecting frame; 203, connecting shaft; 204, screw rod; 205, limiting sliding groove; 206, movable frame; 207, folding connecting rod; 208, second connecting frame; 209, screw hole; 210, limiting frame; 3, annular sliding groove; 4, limiting ring; 5, protective shell; 6, motor; 7, sealing flange. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0018] Please refer to Figures 1-4 The utility model provides a technical scheme: a foldable broadcast television antenna, including support base 1 and antenna folding mechanism 2 installed above support base 1,

[0019] Antenna folding mechanism 2 includes two antenna main bodies 201, the first connecting frame 202 is rotatably connected between the two antenna main bodies 201, the inner wall of first connecting frame 202 is rotatably connected with connecting shaft 203, the bottom of connecting shaft 203 is fixedly provided with screw rod 204, the bottom of one side of two antenna main bodies 201 is provided with limit sliding slot 205, the inner wall of two limit sliding slots 205 is slidably connected with movable frame 206, the inner wall of two movable frames 206 is rotatably connected with folding connecting rod 207, the outer wall of screw rod 204 is threadedly connected with second connecting frame 208, the top of second connecting frame 208 is provided with screw hole 209, and the outer wall of screw rod 204 is threadedly connected with the inner wall of screw hole 209;

[0020] When using, antenna folding mechanism 2 is supported and installed through support base 1, and when receiving signals, it is unfolded and is on the same horizontal line with first connecting frame 202, so that the compatible area of signal receiving is maximum, and the signal receiving strength is also the strongest, when encountering rainy and snowy weather or adjusting the receiving signal of the antenna, screw rod 204 is driven to rotate through motor 6, and then is threadedly connected with screw hole 209 on second connecting frame 208, and second connecting frame 208 is lifted and slides on screw rod 204, so that folding connecting rod 207 at both ends starts to fold, and then pushes antenna main body 201 to rotate on first connecting frame 202 to fold and adjust the angle, when folding connecting rod 207 folds, movable frame 206 is pushed to slide in limit sliding slot 205, so that no movement interference is generated between movable frame 206 and antenna main body 201, so that antenna main body 201 can be automatically folded to shake off the accumulated rain and snow on the upper end in the use process, so as to prevent the damage caused by excessive accumulation of rain and snow, and when the signal is poor, the antenna folding mechanism 2 can also be used to automatically fold and adjust the inclination angle of the antenna, so as to adjust the signal receiving strength, without the user to climb to the high place to fold manually, the convenience of the device is improved;

[0021] Further, the outer wall of one end of the two folding connecting rods 207 is rotatably connected with the inner wall of two ends of the second connecting frame 208 respectively, the first connecting frame 202 is fixedly provided with a limiting frame 210 on one side, and when the second connecting frame 208 rotates and lifts along with the screw rod 204, the first connecting frame 202 supports the antenna main body 201, and the connecting shaft 203 on the first connecting frame 202 rotates along with the rotation of the screw rod 204, while the first connecting frame 202 is fixedly connected through the limiting frame 210 and does not rotate along with the rotation of the connecting shaft 203, thereby ensuring that the antenna main body 201 is stationary and stable.

[0022] Further, the inner wall of the first connecting frame 202 is provided with an annular sliding groove 3, the outer wall of the connecting shaft 203 is fixedly provided with a limiting ring 4, and the outer wall of the limiting ring 4 is rotatably connected with the inner wall of the annular sliding groove 3, the connecting shaft 203 rotates and the first connecting frame 202 remains stationary, and the connecting line of the limiting ring 4 and the annular sliding groove 3 has a certain supporting property to prevent sliding.

[0023] Further, the top of the supporting base 1 is provided with a protective shell 5, the bottom of the limiting frame 210 is fixedly connected with one side of the protective shell 5, and the top of the supporting base 1 is provided with a motor 6 inside the protective shell 5, thereby driving the screw rod 204 to rotate and providing a stable output environment for the motor 6, so that the device is more stable to use.

[0024] One end of the screw rod 204 is fixedly connected with the output end of the motor 6 through the inner wall of the protective shell 5, the top of the protective shell 5 is provided with a sealing flange 7, and the inner wall of the sealing flange 7 is in contact with the outer wall of the screw rod 204, thereby sealing the connection between the screw rod 204 and the protective shell 5 through the sealing flange 7 to prevent rainwater from seeping in and causing damage to the motor 6.

Claims

1. A foldable broadcast television antenna, comprising a supporting base (1) and an antenna folding mechanism (2) installed above the supporting base (1); characterized in that The antenna folding mechanism (2) comprises two antenna bodies (201), a first connecting frame (202) rotatably connected between the two antenna bodies (201), a connecting shaft (203) rotatably connected to the inner wall of the first connecting frame (202), a screw rod (204) fixedly arranged at the bottom of the connecting shaft (203), a limiting sliding groove (205) formed on one side of the bottom of each of the two antenna bodies (201), a movable frame (206) slidably connected to the inner wall of each of the two limiting sliding grooves (205), a folding connecting rod (207) rotatably connected to the inner wall of each of the two movable frames (206), a second connecting frame (208) threadedly connected to the outer wall of the screw rod (204), a screw hole (209) formed in the top of the second connecting frame (208), and the outer wall of the screw rod (204) threadedly connected with the inner wall of the screw hole (209).

2. A foldable broadcast television antenna according to claim 1, wherein: The outer wall of one end of each of the two folding connecting rods (207) is rotatably connected with the inner wall of one end of the second connecting frame (208), and a limiting frame (210) is fixedly arranged on one side of the first connecting frame (202).

3. A foldable broadcast television antenna as claimed in claim 1, wherein: An annular sliding groove (3) is formed in the inner wall of the first connecting frame (202), a limiting ring (4) is fixedly arranged on the outer wall of the connecting shaft (203), and the outer wall of the limiting ring (4) is rotatably connected with the inner wall of the annular sliding groove (3).

4. A foldable broadcast television antenna according to claim 2, wherein: A protective shell (5) is installed on the top of the supporting base (1), the bottom of the limiting frame (210) is fixedly connected with one side of the protective shell (5), and a motor (6) is installed on the inner side of the protective shell (5) on the top of the supporting base (1).

5. The foldable broadcast television antenna of claim 1, wherein: One end of the screw rod (204) is fixedly connected with the output end of the motor (6) through the inner wall of the protective shell (5), a sealing flange (7) is installed on the top of the protective shell (5), and the inner wall of the sealing flange (7) is in contact with the outer wall of the screw rod (204).

6. A foldable broadcast television antenna as claimed in claim 4, wherein: A control switch is fixedly arranged on one side of the supporting base (1), and the motor (6) is electrically connected with an external power supply through the control switch.

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