Adjustable angle rotating head of antenna mast

Abstract

An adjustable angle rotating head for an antenna mast includes a rotating clamp, a bolt, a fixing base, and a handle. When the handle is rotated counterclockwise to the loosened state, the rotating clamp is pulled forward, disengaging a first-type slot on its first engagement surface from the second engagement surface of the fixing base. When the rotating clamp is rotated to a predetermined angle, rotating the handle clockwise to the tightened state causes the bolt to move backward within the axial through hole of the fixing base, forcing the first engagement surface of the rotating clamp against the second engagement surface of the fixing base, and locking the first-type slot on the first engagement surface with one of the slots on the second engagement surface. Therefore, this invention offers multiple advantages: easy storage of omnidirectional antennas, the ability to fix the antenna at any angle (horizontal to vertical) to achieve the optimal receiving position, a slot design on the rotating engagement surface for more secure fixing at a predetermined angle, and the ability to add a rotating stop to prevent over-rotation of the antenna and damage to the cable.

Claims

1. An adjustable angle rotating head for an antenna mast, comprising: a rotating clamp including a chuck on the front side and a first mating surface on the rear side, the first mating surface having multiple first-type slots and a first axial screw hole; and a bolt having a first thread on its front side that can engage with the first axial screw hole, and a second thread on its rear side and a second axial screw hole. A fixed base has a main body, a connecting rod at the bottom of the main body, and an axial through hole relative to the bolt. The front side of the main body has a second engagement surface relative to the first engagement surface, and the second engagement surface has multiple second-type slots that can engage with the first-type slot. In addition, the second engagement surface also includes multiple third-type slots perpendicular to the second-type slots, and multiple fourth-type and fifth-type slots inclined to the second-type and third-type slots. The third, fourth, and fifth-type slots on the second engagement surface can also engage with the first-type slots on the first engagement surface. A handle has a third axial threaded hole relative to the second threaded portion of the bolt, which is screwed onto the rear side of the bolt and locked in the second axial threaded hole with a first screw to limit the rotation distance of the handle in the second threaded portion. Therefore, when the handle is rotated counterclockwise to the loosened state, the rotary clamp is pulled forward, causing the first type of groove on the first mating surface to disengage from the second mating surface of the fixed seat; furthermore, when the rotary clamp is rotated to a predetermined angle, and the handle is rotated clockwise to the tightened state, the bolt is displaced backward within the axial through hole of the fixed seat, forcing the first mating surface of the rotary clamp to approach the second mating surface of the fixed seat, and causing the first type of groove on the first mating surface to engage and lock with one of the type of grooves on the second mating surface.

2. The adjustable angle rotating head of the antenna mast as described in claim 1, wherein, The rotary clamp has a first radial hole in the first axial screw hole, and the first thread of the bolt has a second radial hole relative to the first radial hole. A spring pin passes through the first radial hole and the second radial hole to fix the bolt to the rear side of the rotary clamp.

3. The adjustable angle rotating head of the antenna mast as described in claim 1, wherein, The rotary clamp has at least one locking hole on its side. A baffle is locked to the side of the rotary clamp by a second screw. One end of the baffle extends to the side of the second mating surface of the fixed seat to limit the rotation angle of the rotary clamp.

4. The adjustable angle rotating head of the antenna mast as described in claim 3, wherein, The upper part of the second mating surface of the fixed seat is semi-circular, and the rotary clamp can exhibit rotational displacement within 180 degrees due to the restriction of the baffle.

5. The adjustable angle rotating head of the antenna mast as described in claim 4, wherein, The first type of slot on the first mating surface is perpendicular to the second type of slot on the second mating surface, is horizontal to the third type of slot on the second mating surface, and is inclined at 45 degrees to the fourth type of slot and the fifth type of slot.

6. An adjustable angle rotating head for an antenna mast as described in claim 1, wherein, At least one washer is fitted onto the bolt on the front side of the handle.

7. An adjustable angle swivel head for an antenna mast as described in claim 1, wherein, The handle has a groove at the rear end of the third axial screw hole to accommodate the first screw.

8. An adjustable angle rotating head for an antenna mast as described in claim 1, wherein, The chuck of this rotary clamp is C-shaped and has two extension plates extending forward at the opening. The extension plates have screw holes for a third screw to be inserted to adjust the tightness of the chuck.

9. An adjustable angle rotating head for an antenna mast as described in claim 1, wherein, The handle is shaped like a plum blossom.

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