Spiral drive mechanism and spin mop with the same
AssigneesYen-Tan Lin, Dyna-Mop, Inc.
InventorYi-Pin Lin
Life of this patent
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Abstract
A spin mop includes a spiral drive mechanism and a mop head. The spiral drive mechanism includes an upper rod, a sleeve axially secured on the upper rod, a stopper secured in the sleeve, two thread rolling plates positioned in the upper rod, a guide block, a lower rod axially inserted in the upper rod, and a follower secured on a top end of the lower rod. The guide block is placed in between the two thread rolling plates so that the guide block is movable in a spiral direction with respect to the upper rod. The follower is configured to be selectively driven by the guide block so that the follower together with the lower rod is rotatable with the guide block.
Claims11
A spiral drive mechanism comprising:
- an upper rod including a tube body, a tube extension extending from a bottom of the tube body and an annular shoulder defined at the junction of the tube body and the tube extension;
- the tube body having two sets of longitudinal ribs on inner walls thereof at two opposite sides;
- each set of the ribs defining a dovetail groove;
- a sleeve axially secured around an upper portion of the tube body of the upper rod;
- a stopper secured in the sleeve and having a recess defined in a bottom thereof and a flange formed at bottom edge thereof;
- two thread rolling plates spaced apart and securely fitted in the respective dovetail grooves of the tube body of the upper rod and co-defining a threaded passage therebetween;
- and wherein the two thread rolling plates are held in between the annular shoulder of the upper rod and the flange of the stopper;
- a guide block having a helical thread line on a periphery thereof and being placed in the threaded passage of the two thread rolling plates such that the guide block is movable in a spiral direction with respect to the thread rolling plates;
- a lower rod axially movably inserted in the upper rod;
- and
- a follower secured on a top end of the lower rod and being selectively driven by the guide block, and wherein:
- when the guide block is received in the recess of the stopper, the guide block is kept from driving the follower to rotate;
- and
- when the guide block is withdrawn from the recess of the stopper, the guide block is free to drive the follower together with the lower rod to rotate.
A spin mop comprising:
- an upper rod including a tube body, a tube extension extending from a bottom of the tube body and an annular shoulder defined at the junction of the tube body and the tube extension;
- the tube body having two sets of longitudinal ribs on inner walls thereof at two opposite sides;
- each set of the ribs defining a dovetail groove;
- a sleeve axially secured around an upper portion of the tube body of the upper rod;
- a stopper secured in the sleeve and having a recess defined in a bottom thereof and a flange formed at bottom edge thereof;
- two thread rolling plates spaced apart and securely fitted in the respective dovetail grooves of the tube body of the upper rod and co-defining a threaded passage therebetween;
- and wherein the two thread rolling plates are held in between the annular shoulder of the upper rod and the flange of the stopper;
- a guide block having a helical thread line on a periphery thereof and being placed in the threaded passage of the two thread rolling plates such that the guide block is movable in a spiral direction with respect to the thread rolling plates;
- a lower rod axially inserted in the upper rod;
- a follower secured on a top end of the lower rod and being selectively driven by the guide block, and wherein when the guide block is received in the recess of the stopper, the guide block is kept from driving the follower to rotate;
- and when the guide block is withdrawn from the recess of the stopper, the guide block is free to drive the follower together with the lower rod to rotate;
- a connection mechanism;
- and
- a mop head connected to a bottom end of the lower rod by means of the connection mechanism.
Dependencies are inferred from the claim text.