Device for adjusting slats of window blind
AssigneeNien Made Enterprise Co., Ltd.
InventorYu-Che Wen
Life of this patent
Estimating the term…
Abstract
A device for adjusting a slat of a window blind including a housing, in which a plurality of frames, a rod, a plurality of transmission members, and a plurality of turning members are provided. The rod is meshed with a first rack of each transmission member, and the turning members are respectively meshed with a second rack of each transmission member. The first rack has a plurality of teeth in a line, and the first and the last teeth are shorter than the rest teeth. Furthermore, the first and the last teeth are designed for ratchet, so that the teeth of the rod will slide on and over the first or the last teeth when the user is overturning the rod to protect the teeth of the first rack of the transmission member.
Claims9
A device for adjusting a slat of a window blind, comprising:
- a rod having teeth;
- a transmission member having a first rack and a second rack, wherein the teeth of the rod are meshed with the first rack of the transmission member to move the transmission member between a first position and a second position;
- and
- a turning member having a gear to be meshed with the second rack of the transmission member, so that the turning member is turned while the transmission member is reciprocating between the first position and the second position;
- wherein the first rack has a plurality of teeth in a line;
- the teeth of the first rack are projected from a root surface;
- each of the teeth has a tip at an distal end thereof and a root connected to the root surface;
- each of the teeth has a height, which is a distance between the tip and the root surface;
- and the heights of the first tooth of the line and the last tooth of the line are shorter than the rest teeth.
Dependencies are inferred from the claim text.