Flashlight zooming structure
A flashlight zooming structure includes a main body and a zooming assembly screwed on one end of a neck of the main body. In the zooming assembly, a transparent lamp cup centrally formed with a convex lens is received in a cup seat, the cup seat is screwed into a cap, and the lugs on the outer periphery of the cup seat are received in the corresponding peripheral notches of a receiving section extending from one end of a middle annular element. To illuminate a distant or nearby target, the zooming assembly mounted around the neck of the main body is rotated in the desired direction so that the light emitted by a lighting unit at one end of the neck of the main body is projected outward through the transparent lamp cup in the zooming assembly as a convergent or divergent light beam.
1. A flashlight zooming structure, comprising a main body and a zooming assembly threadedly connected to an end of a neck of the main body,
wherein the zooming assembly comprises a cap, a cup seat, a lamp cup, and a middle annular element, with the cap having a predetermined inner section formed as a threaded section, with the cap having an open end peripherally provided with a plurality of inwardly extending projections, with the cup seat having an outer periphery provided with at least two lugs, with each said lug having an outer side formed as a threaded portion threadedly connected with the threaded section of the cap, with the cup seat having a downwardly tapering inner periphery defining a first opening and a second opening, with the first opening being larger than the second opening, with the first opening peripherally provided with a plurality of spaced and inwardly extending fasteners, with the lamp cup being transparent and centrally formed with a convex lens, with the lamp cup received in the cup seat and limited in position by the fasteners of the cup seat, with the middle annular element having an end extended with a receiving section, with the receiving section peripherally provided with notches of a predetermined depth, with the lugs on the outer periphery of the cup seat inserted in and movable along the notches, with the middle annular element having an inner periphery provided with threads threadedly connected with an externally threaded portion of the neck of the main body, with the middle annular element having an opposite end concavely provided with an annular groove, and with the projections of the cap engaged with the annular groove to limit the cap and the middle annular element in position; and
wherein the zooming assembly is operated by rotating the cap in a desired direction so that the cup seat in the zooming assembly is moved upward or downward along the notches and the lamp cup received in the cup seat is moved along with the cup seat, thus allowing light emitted by a lighting unit at the end of the neck of the main body to project outward through the transparent lamp cup in the zooming assembly as a divergent or convergent light beam.
2. The flashlight zooming structure of claim 1 , wherein the convex lens of the transparent lamp cup is outwardly convex, and wherein the lamp cup has a lower end provided with a concave region, with the light emitted by the lighting unit at the end of the neck of the main body guided by the concave region and projected outward through the convex lens as the divergent or convergent light beam.