Lifting device for umbrella

摘要

A lifting device for an umbrella includes a base, a plurality of fixing seats secured on the base, a plurality of movable members each movably mounted in the respective fixing seat, a pressing module movably mounted on the base and pressing the movable members, a threaded rod mounted on the base and connected with the pressing module, and a drive handle connected with the threaded rod. The pressing module includes a driven rod and two pressing rods. Each of the pressing rods is provided with a straight pressing portion that is movable to press the respective movable member and at least one recessed release portion that is movable to receive the respective movable member. Thus, each of the movable members is rotatable freely so that the lifting device is moved on the ground easily.

主权项

1. A lifting device for an umbrella comprising:
a base; a plurality of fixing seats secured on the base; a plurality of movable members each movably mounted in a respective one of the plurality of fixing seats; a pressing module movably mounted on the base and pressing the plurality of movable members; a threaded rod mounted on the base and connected with the pressing module; and a drive handle connected with the threaded rod, wherein: each of the plurality of fixing seats is provided with a receiving chamber and a guide slot; the pressing module includes:
a driven rod; andtwo pressing rods connected with two opposite ends of the driven rod; the driven rod of the pressing module is provided with a through hole connected with the threaded rod; each of the two pressing rods of the pressing module is extended through and movable in the guide slot of each of the plurality of fixing seats; each of the two pressing rods of the pressing module is provided with a straight pressing portion and at least one recessed release portion; the pressing portion of each of the two pressing rods is movable to press a respective one of the plurality of movable members; the release portion of each of the two pressing rods is movable to align with and receive a respective one of the plurality of movable members; and each of the plurality of movable members is movable in the receiving chamber of the respective fixing seat; the base is provided with a threaded tube which is located at a side of the base; and the threaded rod is screwed into the threaded tube of the base.