Adjustable antenna mount

An adjustable antennal mount has a base bracket, an upper bracket, multiple fasteners, and a leveling instrument. The base bracket has a slanting surface not perpendicular to an assembling axis of base bracket and a rotating axis perpendicular to the slanting surface. The upper bracket is adjustably mounted on the base bracket along the rotating axis and has a diagonal surface and a top surface. The diagonal surface is attached to the slanting surface of the base bracket and is not parallel to the top surface of the upper bracket. The fasteners are connected with the base bracket and the upper bracket and are arranged at spaced intervals. The leveling instrument is mounted in the upper bracket and indicates levelness of the top surface of the upper bracket.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an antenna mount, and more particularly to an adjustable antenna mount.

2. Description of Related Art

A bottom seat of an antenna has to be placed parallel to a horizontal plane to allow the antenna to receive and transport for satellite signals in good working conditions. However, under environmental restrictions, an antenna mast may not be installed in a way that the bottom seat of the antenna is held parallel to the horizontal plane, thereby negatively affecting the antenna's working functions.

To overcome the shortcomings, the present invention tends to provide an adjustable antenna mount to mitigate or obviate the aforementioned problems.

SUMMARY OF THE INVENTION

The main objective of the invention is to provide an adjustable antenna mount which has a base bracket and an upper bracket attached to each other via an inclined plane. An angle between the top of the upper bracket and the assembling axis of the base bracket can be adjusted by relative rotation between the upper bracket and the base bracket.

The adjustable antenna mount has a base bracket, an upper bracket, multiple fasteners, and a leveling instrument. The base bracket has a bundle clamp having an assembling axis, a first attaching plate fixed on a top of the bundle clamp, and a rotating axis. The first attaching plate has a slanting surface formed on a top of the first attaching plate and being not perpendicular to the assembling axis of the bundle clamp. The rotating axis is perpendicular to the slanting surface of the first attaching plate. The upper bracket is adjustably mounted on the first attaching plate of the base bracket along the rotating axis of the base bracket and has a diagonal surface and a top surface. The diagonal surface is formed on a bottom of the upper bracket and is attached to the slanting surface of the base bracket. The top surface is formed on a top of the upper bracket and is not parallel to the diagonal surface. The fasteners are arranged at spaced intervals and are connected with the base bracket and the upper bracket tightly. The leveling instrument is mounted in the upper bracket and indicates levelness of the top surface of the upper bracket.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENT

With reference toFIGS. 1 to 4, an adjustable antenna mount in accordance with the present invention has a base bracket10, an upper bracket20, multiple fasteners30, and a leveling instrument40.

The base bracket10has a bundle clamp11, a first attaching plate13and a rotating axis A. The bundle clamp11is applied for mounting on a mast and has an assembling axis X. The first attaching plate13is fixed on the top of the bundle clamp11by welding and has a slanting surface131formed on the top of the first attaching plate13. The slanting surface131is not perpendicular to the assembling axis X of the bundle clamp11. A first angle α1is formed between the slanting surface131and a plane P which is perpendicular to the assembling axis X. The rotating axis A is perpendicular to the slanting surface131of the first attaching plate13. Preferably, the bundle clamp11has two ears112and multiple fastening bolts114. The cross section of the bundle clamp11is C-shaped and has an opening formed in a radial side of the bundle clamp11. The ears112extend respectively from two ends of the opening. The fastening bolts114are fastened with the ears112for reducing the width of the opening of the bundle clamp11.

The upper bracket20is adjustably mounted on the first attaching plate13of the base bracket10along the rotating axis A and has a diagonal surface201, a top surface202, a stand21, and a second attaching plate23. The diagonal surface201is formed on the bottom of the upper bracket20and is attached to the slanting surface131of the first attaching plate13. The top surface202is formed on the top of the upper bracket20and is not parallel to the diagonal surface201. The stand21has a body211and a top plate212. The body211is a hollow tube. The top plate212is fixed on the top of the body211by welding. An area of the top plate212is larger than an area of the top of the body211. A top of the top plate212is defined as the top surface202of the upper bracket20. The top plate212may further have multiple mounting holes215for mounting an antenna. The stand21may further have multiple support plates213connected with the top plate212and the body211in a radial arrangement to enhance structural strength of the upper bracket20.

The second attaching plate23is fixed on the bottom of the stand21by welding. An area of the second attaching plate23is larger than an area of the bottom of the stand21. The bottom of the second attaching plate23is defined as the diagonal surface201, and is attached to the slanting surface131of the first attaching plate13. The second attaching plate23and the first attaching plate13are rotatably connected with each other along the rotating axis A. The first attaching plate13and the second attaching plate23each have a respective shaft hole133,233. The shaft holes133,233are formed along the rotating axis A, and a shaft135is mounted through the shaft holes133,233and is connected with the first attaching plate13and the second attaching plate23. Preferably, a second angle α2is formed between the diagonal surface201of the upper bracket20and the top surface202of the upper bracket20, which is equal to the first angle α1. Therefore, the top surface202of the upper bracket20is perpendicular to the assembling axis X of the bundle clamp11in an initial position.

The fasteners30are arranged at spaced intervals and are connected with the base bracket10and the upper bracket20tightly to fix the relative position of the base bracket10and the upper bracket20. Each fastener30has a fixing plate31and a fastening unit33. The fixing plate31abuts the top of the second attaching plate23. The fastening unit33is connected with the fixing plate31and the first attaching plate13to provide a fastening force for fastening the first attaching plate13and the second attaching plate23tightly.

The leveling instrument40, for example, a bubble level, is mounted in the stand21of the upper bracket20, and indicates levelness of the top surface202of the upper bracket20being horizontal or not. Preferably, the stand21has a cavity214recessed in the top surface202. The leveling instrument40is mounted in the cavity214and is disposed in the middle of the stand21. The user can observe the position of the bubble of the leveling instrument40from the top.

With reference toFIGS. 5 to 7, in a situation that the axial direction of the mast50for an antenna is not perpendicular to the horizontal plane, the top surface202of the upper bracket20will not be parallel to the horizontal plane in the initial position, when the bundle clamp11is mounted around the mast50. Therefore, the bubble of the leveling instrument40will be located in the fringe of the leveling instrument40. The angle between the top surface202of the upper bracket20and the assembling axis X of the bundle clamp11may be adjusted by rotating the upper bracket20relative to the base bracket10. With the attachment of the slanting surface131of the base bracket10and the diagonal surface201of the upper bracket20, the top surface202of the upper bracket20will be adjusted to be parallel to the horizontal plane when the bubble of the leveling instrument40is located in the center of the leveling instrument40. After that, the fastening units33of the fasteners30can be tightened to fasten the fixing plate31to fix the relative position of the base bracket10and the upper bracket20. Therefore, the antenna60can be mounted on the top surface202of the upper bracket20which is parallel to the horizontal plane and will work in good conditions with the satellites.

With such an arrangement, the adjustable antenna mount in accordance with the present invention has a simple structure and can be used easily. The angle between the top surface202of the upper bracket20and the assembling axis X of the bundle clamp11can be adjusted by relative rotation between the base bracket10and the upper bracket20. In addition, the leveling instrument40can assist the adjustment by indicating the levelness of the top surface202of upper bracket20being parallel to the horizontal plane or not. So the antenna can be mounted on the top surface202of the upper bracket20, which is parallel to the horizontal plane.