Foldable log-periodic antenna

Abstract

The utility model relates to the log-periodic antenna field, and discloses a foldable log-periodic antenna comprising a vertical rod, the inner bottom end of the vertical rod is rotatably connected with a threaded rod, the bottom end of the threaded rod is fixedly connected with a bevel gear 1, and the outer part of the threaded rod is in threaded connection with a sleeve rod. Limiting blocks are fixedly connected to the left side and the right side of the exterior of the sleeve rod, supporting rods are rotatably connected to the exteriors of the limiting blocks, a second bevel gear is rotatably connected to the bottom end of the interior of the vertical rod, a rotating rod is fixedly connected to the exterior of the second bevel gear, and a mounting block is fixedly connected to the bottom of the vertical rod. According to the log-periodic antenna, through mutual cooperation of the vertical rods, the threaded rods, the limiting blocks and other structures, folding of the log-periodic antenna is achieved, the log-periodic antenna can be folded when not used, the size and the size of the antenna are reduced, carrying and storage are convenient, and meanwhile the shape and the size are adjusted according to needs so that the log-periodic antenna can adapt to different application scenes and working frequencies.

Description

Technical Field

[0001] The utility model relates to the field of logarithmic periodic antennas, in particular to a foldable logarithmic periodic antenna. Background Art

[0002] Logarithmic periodic antenna is a special shape of antenna, usually used in microwave and millimeter wave frequency band communication systems. Logarithmic periodic antenna is usually composed of a series of radiating units distributed in a specific geometric shape, which are arranged according to a certain rule to form a logarithmic periodic radiation characteristic. This design can achieve a wider operating frequency band and higher gain, and is suitable for communication systems that require high performance.

[0003] Most of the existing log-periodic antennas are huge in size, inconvenient to carry, and difficult to set up, which makes the use of the antennas very troublesome. At the same time, the bottom connection adopts bolts, which are difficult to install and disassemble. They are easy to rust after long-term use, making them impossible to disassemble, affecting normal maintenance and inspection. In view of the above problems, technicians in this field have proposed a foldable log-periodic antenna to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a foldable log-periodic antenna, aiming to improve the problem that the log-periodic antenna in the prior art is large in size and inconvenient to carry, which leads to more troubles in use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a foldable log-periodic antenna, comprising a vertical rod, the inner bottom end of the vertical rod is rotatably connected to a threaded rod, the bottom end of the threaded rod is fixedly connected to a bevel gear 1, the outer thread of the threaded rod is threadedly connected to a sleeve rod, the outer left and right sides of the sleeve rod are fixedly connected to limit blocks, the outer side of the limit block is rotatably connected to a support rod, the inner bottom end of the vertical rod is rotatably connected to a bevel gear 2, the outer side of the bevel gear 2 is fixedly connected to a rotating rod, the bottom of the vertical rod is fixedly connected to a mounting block, and the mounting block is mounted with a fixing plate through a clamping assembly.

[0006] Furthermore, the clamping assembly includes two limit grooves, which are respectively opened on the left and right sides of the interior of the mounting block, a spring is fixedly connected to the interior of the limit groove, the other end of the spring is fixedly connected to a moving block, the top of the moving block is fixedly connected to a pull rod, the left and right ends of the moving block are rotatably connected to a connecting rod, the other end of the connecting rod is rotatably connected to a clamping block, and two clamping grooves are opened on the left and right sides of the interior of the fixed plate.

[0007] Furthermore, a fixing block is fixedly connected to the top of the vertical rod, and a cross rod is rotatably connected to the left and right sides of the outside of the fixing block. A plurality of support rods are fixedly connected to the outside of the cross rod, and the other end of the support rod is rotatably connected to the bottom of the cross rod.

[0008] Furthermore, the outer portion of the sleeve rod is slidably connected to the inner portion of the vertical rod, and the outer portion of the limit block is slidably connected to the inner portion of the vertical rod.

[0009] Furthermore, the outer side of the bevel gear 1 is meshed with the outer side of the bevel gear 2, and the other end of the rotating rod passes through the outer wall of the vertical rod and is fixedly connected with a rotating handle.

[0010] Furthermore, the longitudinal section of the card block is set to be square, and the outside of the card block is slidably connected to the inside of the card slot.

[0011] Furthermore, one end of the pull rod passes through the outside of the mounting block, and the outside of the pull rod is slidably connected to the inside of the mounting block.

[0012] Furthermore, the outside of the mounting block is slidably connected to the inside of the vertical rod.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the log-periodic antenna can be folded by the mutual cooperation of the vertical rod, the threaded rod, the limit block, the support rod and other structures. It can be folded when not in use, reducing the volume and size of the antenna, making it convenient to carry and store. At the same time, the shape and size can be adjusted as needed to adapt to different application scenarios and operating frequencies.

[0015] 2. In the utility model, the fixing of the antenna as a whole is achieved through the mutual cooperation of the mounting block, the fixing plate, the clamping block, the clamping slot, the spring and other structures, so that the antenna user can complete the installation without the aid of auxiliary tools, and the antenna can be easily disassembled by clamping, which is convenient for subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of the foldable log-periodic antenna proposed by the utility model;

[0017] Figure 2 A cross-sectional view of a vertical rod of the foldable log-periodic antenna proposed in the utility model;

[0018] Figure 3 This is a cross-sectional view of the mounting block of the foldable log-periodic antenna proposed in the utility model.

[0019] Legend:

[0020] 1. Vertical rod; 2. Threaded rod; 3. Bevel gear 1; 4. Sleeve rod; 5. Limit block; 6. Bevel gear 2; 7. Rotating rod; 8. Support rod; 9. Fixed block; 10. Cross bar; 11. Support rod; 12. Mounting block; 13. Fixed plate; 14. Pull rod; 15. Spring; 16. Moving block; 17. Connecting rod; 18. Block; 19. Slot; 20. Limit slot. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1 and Figure 2 The utility model provides an embodiment of a foldable log-periodic antenna, comprising a vertical rod 1, the inner bottom end of the vertical rod 1 is rotatably connected to a threaded rod 2, the bottom end of the threaded rod 2 is fixedly connected to a bevel gear 1 3, the outer end of the threaded rod 2 is threadedly connected to a sleeve rod 4, the outer left and right sides of the sleeve rod 4 are fixedly connected to a limiting block 5, the outer end of the limiting block 5 is rotatably connected to a support rod 8, the inner bottom end of the vertical rod 1 is rotatably connected to a bevel gear 2 6, the outer end of the bevel gear 2 6 is fixedly connected to a rotating rod 7, the bottom of the vertical rod 1 is fixedly connected to a mounting block 12, the mounting block 12 is installed with a fixing plate 13 through a clamping assembly, the outer end of the sleeve rod 4 is slidably connected to the inner part of the vertical rod 1, the outer end of the limiting block 5 is slidably connected to the inner part of the vertical rod 1, the outer side of the bevel gear 1 3 is meshedly connected to the outer side of the bevel gear 2 6, and the other end of the rotating rod 7 passes through the outer wall of the vertical rod 1 and is fixedly connected to a rotating handle.

[0023] Specifically, the vertical rod 1 can support the antenna, ensuring that the log-periodic antenna can remain stable after installation, thereby achieving a stable communication effect. The rotating rod 7 is rotated by turning the handle, thereby driving the bevel gear 2 6 to rotate, and driving the bevel gear 1 3 meshing with the bevel gear 2 6 to rotate, thereby rotating the threaded rod 2. Since the inside of the sleeve rod 4 is threadedly connected to the outside of the threaded rod 2, the sleeve rod 4 starts to move when the threaded rod 2 rotates, and under the limiting action of the limit blocks 5 connected on both sides, the sleeve rod 4 can only slide downward along the inside of the vertical rod 1, and then the support rod 8 is driven to move through the limit blocks 5, so that the support rod 11 connected to the other end of the support rod 8 rotates around the end connected to the fixed block 9, thereby folding the antenna, reducing the volume and size of the antenna, and facilitating carrying and storage. At the same time, the shape and size can be adjusted as needed to adapt to different application scenarios and operating frequencies. The support rod 8 can also support the cross bar 10 when the antenna is unfolded to maintain the stability of the antenna.

[0024] Reference Figure 3 The clamping assembly includes two limit grooves 20, which are respectively opened on the left and right sides of the interior of the mounting block 12. A spring 15 is fixedly connected to the interior of the limit groove 20, and the other end of the spring 15 is fixedly connected to a moving block 16. The top of the moving block 16 is fixedly connected to a pull rod 14. The left and right ends of the moving block 16 are rotatably connected to a connecting rod 17, and the other end of the connecting rod 17 is rotatably connected to a clamping block 18. Two clamping grooves 19 are opened on the left and right sides of the interior of the fixed plate 13. The longitudinal section of the clamping block 18 is set to be square. The outside of the clamping block 18 is slidably connected to the inside of the clamping groove 19. One end of the pull rod 14 passes through the outside of the mounting block 12, the outside of the pull rod 14 is slidably connected to the inside of the mounting block 12, and the outside of the mounting block 12 is slidably connected to the inside of the vertical rod 1.

[0025] Specifically, the pull rod 14 can drive the moving block 16 to move upward, thereby extending the spring 15, and the moving block 16 can drive the connecting rods 17 on both sides to move when moving, and then drive the card block 18 connected at the other end to move toward the inside of the limiting groove 12 through the connecting rod 17. When the card block 18 is completely retracted into the interior of the mounting block 12, the mounting block 12 can be inserted into the fixed plate 13, and then the pull rod 14 is released, the spring 15 contracts and drives the moving block 16 to reset, and then the card block 18 is pushed into the card slot 19 through the connecting rods 17 at both ends, thereby realizing the overall installation of the log-periodic antenna. When disassembling, it is only necessary to repeat the above steps, pull the pull rod 14 to disengage the card block 18 from the card slot 19, and then the mounting block 12 can be taken out to realize the disassembly of the antenna. The card connection method is convenient for disassembly of the antenna, which is convenient for subsequent maintenance.

[0026] Reference Figure 1The top of the vertical rod 1 is fixedly connected with a fixed block 9, and the left and right sides of the outside of the fixed block 9 are rotatably connected with a cross bar 10. The outside of the cross bar 10 is fixedly connected with multiple support rods 11, and the other end of the support rod 8 is rotatably connected to the bottom of the cross bar 10.

[0027] Specifically, the vertical rod 1 is connected to the fixed block 9, and then the fixed block 9 can be rotatably connected to the two cross rods 10 to achieve folding of the antenna. Multiple support rods 11 can be used to receive signals, and the length of the support rods 11 is not fixed, so that signals of different frequency bands can be received. The support rod 8 supports the cross rod 10 and facilitates folding.

[0028] Working principle: When folding the antenna, the rotating rod 7 can be rotated by the handle, thereby rotating the bevel gear 2 6, and the bevel gear 1 3 is driven to rotate through the bevel gear 2 6, so that the threaded rod 2 rotates. At this time, the sleeve rod 4 threadedly connected to the outer side of the threaded rod 2 begins to move, and under the action of the limit blocks 5 connected on both sides, it slides downward along the inside of the vertical rod 1, thereby driving the support rod 8 to move through the limit blocks 5, so that the support rod 11 connected to the other end of the support rod 8 rotates around the end connected to the fixed block 9, thereby realizing the folding of the antenna, reducing the volume and size of the antenna, and facilitating carrying and storage.

[0029] When installing the antenna, by pulling the pull rods 14 on both sides of the installation block 12, the movable block 16 can be driven to move upward, thereby extending the spring 15, and at the same time, the connecting rods 17 on both sides are driven to move through the movable block 16, and then the connecting rod 17 drives the card block 18 connected at the other end to move toward the inside of the limit groove 12. At this time, the installation block 12 can be inserted into the fixed plate 13, and then the pull rod 14 is released. The spring 15 contracts and drives the movable block 16 to reset, thereby pushing the card block 18 into the card slot 19 through the connecting rods 17 at both ends, thereby realizing the installation and fixation of the logarithmic periodic antenna.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A foldable log-periodic antenna, comprising a vertical rod (1), characterized in that: The inner bottom end of the vertical rod (1) is rotatably connected to a threaded rod (2), the bottom end of the threaded rod (2) is fixedly connected to a bevel gear 1 (3), the outer side of the threaded rod (2) is threadably connected to a sleeve rod (4), the outer left and right sides of the sleeve rod (4) are fixedly connected to limit blocks (5), the outer side of the limit block (5) is rotatably connected to a support rod (8), the inner bottom end of the vertical rod (1) is rotatably connected to a bevel gear 2 (6), the outer side of the bevel gear 2 (6) is fixedly connected to a rotating rod (7), the bottom of the vertical rod (1) is fixedly connected to a mounting block (12), and the mounting block (12) is mounted with a fixing plate (13) through a clamping assembly.

2. The foldable log-periodic antenna according to claim 1, characterized in that: The clamping assembly comprises two limit grooves (20), the two limit grooves (20) are respectively arranged on the left and right sides of the interior of the mounting block (12), a spring (15) is fixedly connected inside the limit groove (20), the other end of the spring (15) is fixedly connected to a moving block (16), the top of the moving block (16) is fixedly connected to a pull rod (14), the left and right ends of the moving block (16) are rotatably connected to a connecting rod (17), the other end of the connecting rod (17) is rotatably connected to a clamping block (18), and two clamping grooves (19) are arranged on the left and right sides of the interior of the fixed plate (13).

3. The foldable log-periodic antenna according to claim 1, characterized in that: The top of the vertical rod (1) is fixedly connected to a fixed block (9), the left and right sides of the outside of the fixed block (9) are rotatably connected to a cross rod (10), the outside of the cross rod (10) is fixedly connected to a plurality of support rods (11), and the other end of the support rod (8) is rotatably connected to the bottom of the cross rod (10).

4. The foldable log-periodic antenna according to claim 1, characterized in that: The outside of the sleeve rod (4) is slidably connected to the inside of the vertical rod (1), and the outside of the limit block (5) is slidably connected to the inside of the vertical rod (1).

5. The foldable log-periodic antenna according to claim 1, characterized in that: The outer side of the bevel gear 1 (3) is meshedly connected with the outer side of the bevel gear 2 (6), and the other end of the rotating rod (7) passes through the outer wall of the vertical rod (1) and is fixedly connected with a rotating handle.

6. The foldable log-periodic antenna according to claim 2, characterized in that: The longitudinal section of the card block (18) is arranged to be square, and the outside of the card block (18) is slidably connected to the inside of the card slot (19).

7. The foldable log-periodic antenna according to claim 2, characterized in that: One end of the pull rod (14) passes through the outside of the mounting block (12), and the outside of the pull rod (14) is slidably connected to the inside of the mounting block (12).

8. The foldable log-periodic antenna according to claim 2, characterized in that: The outside of the mounting block (12) is slidably connected to the inside of the vertical rod (1).

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