Worm wheel
AssigneeJtekt Corporation
InventorsJun HAMAKITA, Michitoshi MITSUMARU
Life of this patent
Estimating the term…
Abstract
Each tooth of a worm wheel has a first tooth flank in which a helical surface portion is arranged on one side in a rotational axis direction of the worm wheel and a concavely curved surface portion is arranged on the other side in the rotational axis direction, and a second tooth flank in which a concavely curved surface portion is arranged on the one side in the rotational axis direction and the helical surface portion is arranged on the other side in the rotational axis direction.
Claims4
A worm wheel that has a plurality of teeth that mesh with teeth of a worm gear, and in which each of a tooth flank on one side of each of the teeth in a rotational direction and a tooth flank on the other side of each of the teeth in the rotational direction has a helical surface portion and a concavely curved surface portion, the helical surface portion having a same shape as a tooth flank of a helical gear, and the concavely curved surface portion having a shape that follows a convexly curved tooth flank of the worm gear, wherein:
- the tooth flanks includes a first tooth flank in which the helical surface portion is arranged on one side in a rotational axis direction of the worm wheel and the concavely curved surface portion is arranged on the other side in the rotational axis direction, and a second tooth flank in which the concavely curved surface portion is arranged on the one side in the rotational axis direction and the helical surface portion is arranged on the other side in the rotational axis direction;
- and
- the first tooth flank is arranged so as to face the second tooth flank, and the second tooth flank is arranged so as to face the first tooth flank.
Dependencies are inferred from the claim text.