Adjustable frequency modulation antenna

Abstract

The utility model discloses an adjustable frequency modulation antenna comprising an antenna main body, the upper surface of the antenna main body is fixedly connected with a fixing rod, the front surface of the fixing rod is provided with scale marks close to two ends, the middle part of the front surface of the fixing rod is fixedly provided with a T-shaped joint, and two ends of the outer surface of the fixing rod are slidably provided with frequency modulation rods. An adjusting structure is arranged in the fixing rod and comprises a rotating block, a rotating shaft rod, a first bearing, a first umbrella-shaped gear, a rectangular transmission groove and a second umbrella-shaped gear. According to the adjustable frequency modulation antenna provided by the utility model, when the frequency modulation rod needs to be adjusted, the rotating block is rotated, so that the rectangular telescopic column drives the rectangular sliding block fixedly mounted at one end of the upper surface and one end of the lower surface to slide in the rectangular sliding groove, and the rectangular telescopic column slides in the rectangular groove; therefore, the frequency modulation rod fixedly connected with the outer end of the rectangular telescopic column is driven to slide on the outer surface of the fixed rod until a proper position is adjusted.

Description

Technical Field

[0001] This utility model relates to the field of frequency modulation antenna technology, and in particular to an adjustable frequency modulation antenna. Background Technology

[0002] Generally, sharing a single transmitting antenna for multiple FM channels saves costs. However, because each channel uses different frequency bands, the transmission distance of the transmitted signal is very limited due to these frequency differences, easily leading to signal loss. For example, a frequency-tunable transmitting antenna with publication number CN202487738U consists of an antenna body and a tunable antenna. The antenna body has a T-shaped structure, with a port for connecting to the transmitter at the lower end and a T-shaped connector fixed at the top with screws. The port is connected to a conductive FM contact fixed inside the T-shaped connector via a wire passing through the antenna body. The adjustable frequency antenna is a telescopic device with a screw hole for fixing it. The antenna consists of a fixed rod and a sliding frequency tuning rod connected together. The fixed rod has markings for adjusting the frequency band, and one end has a metal conductor with a fixing screw. The adjustable frequency transmitting antenna can be made of aluminum alloy. The antenna body is fixed to an external support via U-shaped fasteners and U-shaped bolts. When frequency adjustment is needed, the adjustable fasteners at both ends must be manually turned before the frequency tuning rods can be moved to the corresponding markings for the desired band, making adjustment somewhat cumbersome. Utility Model Content

[0003] The main objective of this invention is to provide an adjustable frequency modulation antenna, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] An adjustable frequency-modulated antenna includes an antenna body. A fixing rod is fixedly connected to the upper surface of the antenna body. Scale lines are provided near both ends of the front surface of the fixing rod. A T-shaped connector is fixedly installed in the middle of the front surface of the fixing rod. Frequency-modulated rods are slidably installed at both ends of the outer surface of the fixing rod. An adjustment structure is provided inside the fixing rod. The adjustment structure includes a rotating block, a rotating shaft, a first bearing, a first bevel gear, a rectangular transmission groove, a second bevel gear, a circular connecting rod, a rectangular sliding groove, a rectangular slider, a rectangular slot, a rectangular telescopic column, a threaded rod, and a second bearing.

[0006] Preferably, a rectangular transmission groove is formed in the middle of the inside of the fixed rod, and a No. 1 bearing is fixedly installed in the middle of the upper surface of the rectangular transmission groove, and a rotating shaft is installed on the No. 1 bearing.

[0007] Preferably, a rotating block is fixedly installed on the upper surface of the rotating shaft, a first bevel gear is fixedly connected to the lower surface of the rotating shaft, and a second bearing is fixedly installed at the middle of both ends of the rectangular transmission groove.

[0008] Preferably, a circular connecting rod is installed on the second bearing, and a second bevel gear is fixedly installed on the outer surface of the circular connecting rod near the other end. Threaded rods are fixedly connected to both ends of the circular connecting rod.

[0009] Preferably, a first bevel gear fixedly connected to the lower surface of the rotating shaft meshes with a second bevel gear fixedly installed on the outer surface of the circular connecting rod near the other end, and a rectangular telescopic column is threaded onto the outer surface of the threaded rod.

[0010] Preferably, a rectangular slider is fixedly installed at one end of both the upper and lower surfaces of the rectangular telescopic column, and rectangular grooves are formed on both ends of the fixed rod, with rectangular sliding grooves formed on both the upper and lower surfaces of the rectangular grooves.

[0011] Preferably, a rectangular slider is slidably installed in the rectangular groove, and a frequency tuning rod is fixedly connected to the outer end of the rectangular telescopic column.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this invention, the adjustable structure allows the rotating block to be rotated when the frequency tuning rod needs to be adjusted. This causes the rectangular telescopic column to slide within the rectangular groove, where one end of the rectangular slider is fixedly mounted on the upper and lower surfaces. This sliding of the rectangular telescopic column within the groove causes the frequency tuning rod, which is fixedly connected to the outer end of the rectangular telescopic column, to slide on the outer surface of the fixed rod until it is adjusted to the appropriate position. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an adjustable frequency modulation antenna according to the present invention;

[0015] Figure 2 This is a cross-sectional view of an adjustable frequency modulation antenna according to the present invention.

[0016] Figure 3 This utility model relates to an adjustable frequency modulation antenna. Figure 2 Enlarged view of point A in the middle.

[0017] In the diagram: 1. Antenna body; 2. T-connector; 3. Fixing rod; 301. Scale line; 4. Frequency tuning rod; 5. Adjustment structure; 501. Rotating block; 502. Rotating shaft; 503. Bearing No. 1; 504. Bevel gear No. 1; 505. Rectangular transmission groove; 506. Bevel gear No. 2; 507. Circular connecting rod; 508. Rectangular slide; 509. Rectangular slider; 510. Rectangular groove; 511. Rectangular telescopic column; 512. Threaded rod; 513. Bearing No. 2. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] like Figure 1-3 As shown, an adjustable frequency modulation antenna includes an antenna body 1. A fixing rod 3 is fixedly connected to the upper surface of the antenna body 1. Scale lines 301 are provided near both ends of the front surface of the fixing rod 3. A T-type connector 2 is fixedly installed in the middle of the front surface of the fixing rod 3. Frequency modulation rods 4 are slidably installed at both ends of the outer surface of the fixing rod 3. An adjustment structure 5 is provided inside the fixing rod 3. The adjustment structure 5 includes a rotating block 501, a rotating shaft 502, a first bearing 503, a first bevel gear 504, a rectangular transmission groove 505, a second bevel gear 506, a circular connecting rod 507, a rectangular sliding groove 508, a rectangular slider 509, a rectangular slot 510, a rectangular telescopic column 511, a threaded rod 512, and a second bearing 513.

[0020] A rectangular transmission groove 505 is formed in the middle of the interior of the fixed rod 3. A bearing 503 is fixedly installed in the middle of the upper surface of the rectangular transmission groove 505. A rotating shaft 502 is installed on the bearing 503. A rotating block 501 is fixedly installed on the upper surface of the rotating shaft 502. A bevel gear 504 is fixedly connected to the lower surface of the rotating shaft 502. A bearing 513 is fixedly installed in the middle of both ends of the rectangular transmission groove 505. A circular connecting rod 507 is installed on the bearing 513. A bevel gear 506 is fixedly installed on the outer surface of the circular connecting rod 507 near the other end. Threaded rods 512 are fixedly connected to both ends of the circular connecting rod 507. The bevel gear 504 fixedly connected to the lower surface of the rotating shaft 502 and the bevel gear 506 fixedly installed on the outer surface of the circular connecting rod 507 near the other end... 506 engagement, a rectangular telescopic column 511 is threaded onto the outer surface of the threaded rod 512; a rectangular slider 509 is fixedly installed at one end of the upper and lower surfaces of the rectangular telescopic column 511; rectangular grooves 510 are opened on both ends of the fixed rod 3; rectangular sliding grooves 508 are opened on the upper and lower surfaces of the rectangular grooves 510; the rectangular slider 509 is slidably installed in the rectangular sliding grooves 508; the frequency tuning rod 4 is fixedly connected to the outer end of the rectangular telescopic column 511. When the frequency tuning rod 4 needs to be adjusted, the rotating block 501 is rotated, so that the rectangular telescopic column 511 drives the rectangular slider 509 fixedly installed at one end of the upper and lower surfaces to slide in the rectangular sliding grooves 508, so that the rectangular telescopic column 511 slides in the rectangular grooves 510, thereby driving the frequency tuning rod 4 fixedly connected to the outer end of the rectangular telescopic column 511 to slide on the outer surface of the fixed rod 3 until it is adjusted to the appropriate position.

[0021] It should be noted that this utility model is an adjustable frequency modulation antenna. When the frequency modulation rod 4 needs to be adjusted, the rotating block 501 is rotated, causing the rotating block 501 to drive the rotating shaft 502 to rotate on the first bearing 503, which in turn drives the first bevel gear 504 fixedly connected to the lower surface of the rotating shaft 502 to rotate. Because the first bevel gear 504 fixedly connected to the lower surface of the rotating shaft 502 meshes with the second bevel gear 506 fixedly installed on the outer surface of the circular connecting rod 507 near the other end, the circular connecting rod 507 is driven to rotate on the second bearing 513, thereby driving the threaded rod 512 fixedly connected to both ends of the circular connecting rod 507 to rotate. This causes the rectangular slider 509 fixedly installed on one end of the upper and lower surfaces of the rectangular telescopic column 511 threaded on the outer surface of the threaded rod 512 to slide in the rectangular slide groove 508, and the rectangular telescopic column 511 to slide in the rectangular groove 510, thereby driving the frequency modulation rod 4 fixedly connected to the outer end of the rectangular telescopic column 511 to slide on the outer surface of the fixed rod 3 until it is adjusted to the appropriate position.

[0022] 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. An adjustable frequency modulation antenna, characterized in that: The antenna body (1) is fixedly connected to a fixing rod (3) on its upper surface. The front surface of the fixing rod (3) is provided with scale lines (301) near both ends. A T-type connector (2) is fixedly installed in the middle of the front surface of the fixing rod (3). A frequency tuning rod (4) is slidably installed at both ends of the outer surface of the fixing rod (3). An adjustment structure (5) is provided inside the fixing rod (3). The adjustment structure (5) includes a rotating block (501), a rotating shaft (502), a first bearing (503), a first bevel gear (504), a rectangular transmission groove (505), a second bevel gear (506), a circular connecting rod (507), a rectangular slide groove (508), a rectangular slider (509), a rectangular groove (510), a rectangular telescopic column (511), a threaded rod (512), and a second bearing (513).

2. The adjustable frequency modulation antenna according to claim 1, characterized in that: A rectangular transmission groove (505) is provided in the middle of the inside of the fixed rod (3). A bearing (503) is fixedly installed in the middle of the upper surface of the rectangular transmission groove (505). A rotating shaft (502) is installed on the bearing (503).

3. The adjustable frequency modulation antenna according to claim 2, characterized in that: A rotating block (501) is fixedly installed on the upper surface of the rotating shaft (502), and a first bevel gear (504) is fixedly connected to the lower surface of the rotating shaft (502). A second bearing (513) is fixedly installed at the middle of both ends of the rectangular transmission groove (505).

4. An adjustable frequency modulation antenna according to claim 3, characterized in that: A circular connecting rod (507) is installed on the second bearing (513). A second bevel gear (506) is fixedly installed on the outer surface of the circular connecting rod (507) near the other end. Threaded rods (512) are fixedly connected to both ends of the circular connecting rod (507).

5. An adjustable frequency modulation antenna according to claim 4, characterized in that: The first bevel gear (504) fixedly connected to the lower surface of the rotating shaft (502) meshes with the second bevel gear (506) fixedly installed on the outer surface of the circular connecting rod (507) near the other end. A rectangular telescopic column (511) is threaded onto the outer surface of the threaded rod (512).

6. An adjustable frequency modulation antenna according to claim 5, characterized in that: A rectangular slider (509) is fixedly installed at one end of the upper and lower surfaces of the rectangular telescopic column (511), and a rectangular groove (510) is opened on both ends of the fixed rod (3), and a rectangular sliding groove (508) is opened on the upper and lower surfaces of the rectangular groove (510).

7. An adjustable frequency modulation antenna according to claim 6, characterized in that: A rectangular slider (509) is slidably installed in the rectangular groove (508), and a frequency tuning rod (4) is fixedly connected to the outer end of the rectangular telescopic column (511).

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