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 and configured as follows. A transparent lamp cup is received in a cup seat. The cup seat has outwardly extending lugs respectively received in channels formed on the inner periphery of the cap. A ring has oblique notches respectively connected with the lugs of the cup seat. A middle annular element has projections respectively fitted in recesses of the ring and has hooks respectively engaged with engaging grooves of the cap. To illuminate a distant or nearby target, the zooming assembly 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 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, the flashlight zooming structure being characterized in that:
the zooming assembly comprises a cap, a cup seat, a lamp cup, a middle annular element, and a ring, the cap having an inner open end formed with spaced engaging grooves, the cap having an inner periphery symmetrically provided with channels, the cup seat having a downwardly tapering inner periphery defining a relatively large open end and a relatively small open end, the relatively large open end of the cup seat having an outer periphery provided with at least two lugs respectively inserted in the channels of the cap, the relatively large open end of the cup seat being peripherally provided with a plurality of inwardly extending fasteners, the lamp cup being transparent and centrally formed with a convex lens, the lamp cup being received in the cup seat and limited in position by the fasteners of the cup seat, the middle annular element having an end extended with a connecting portion, the connecting portion being peripherally provided with a plurality of outwardly extending hooks respectively engaged with the engaging grooves of the cap and a plurality of projections respectively inserted in recesses of the ring such that the ring and the middle annular element are limited in position relative to each other, the ring having an end peripherally provided with at least two oblique notches, the oblique notches being respectively connected with the lugs at the relatively large open end of the cup seat in the cap such that the lugs are respectively movable in the oblique notches, 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;
wherein the zooming assembly is operated by rotating the cap in a desired direction so that the lugs provided on the outer periphery of the relatively large open end of the cup seat in the cap are moved upward or downward along the oblique notches of the ring respectively 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 convergent or divergent light beam.
2. The flashlight zooming structure of claim 1 , wherein the convex lens of the transparent lamp cup is outwardly convex, and the lamp cup has a lower end provided with a concave region, so as for the light emitted by the lighting unit at the end of the neck of the main body to be guided by the concave region and projected outward through the convex lens as the convergent or divergent light beam.