Invention Application
- Patent Title: CONTROL MECHANISM FOR RAISING AND LOWERING WINDOW COVERING
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Application No.: US15184802Application Date: 2016-06-16
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Publication No.: US20170218698A1Publication Date: 2017-08-03
- Inventor: Lin CHEN , Keng-Hao NIEN
- Applicant: NIEN MADE ENTERPRISE CO., LTD.
- Priority: CN201620093383.6 20160129
- Main IPC: E06B9/34
- IPC: E06B9/34 ; F16H19/06 ; E06B9/326 ; E06B9/386 ; E06B9/323 ; F16H29/12 ; E06B9/303

Abstract:
A control structure for a window covering includes a base, a revolving wheel having an axial post, a restriction means including a bushing fitting around the axial post, a transmission member provided on a side of the bushing, and at least one pawl connected to the axial post. The revolving wheel is connected to the base. The restriction means has at least one cutting groove. The transmission member has at least one abutting portion on an inner wall thereof. The pawl is pivotable within a width of the cutting groove. When the revolving wheel is rotated forward, an end of the pawl passes through the cutting groove to mesh with the abutting portion. When the revolving wheel is rotated backward, the pawl disengages from the abutting portion, and the transmission member is rotatable relative to the revolving wheel. Whereby, it could prevent generating noise while operating the window covering.
Public/Granted literature
- US10107032B2 Control mechanism for raising and lowering window covering Public/Granted day:2018-10-23
Information query
IPC分类: