| 摘要 |
<p>The invention provides an opening limiting device which can fully open surface materials, and doors and windows. The opening limiting device comprises supporting rods supported by windows, and fully-open and semi-open mechanism mounted on an opening frame. When a front-end pin is put into a guiding groove of a receiving member constituting the fully-open and semi-open mechanism, an opening degree of the opened windows is limited in a pre-determined degree; and when the front-end pin is separated from the guiding groove, the opened windows can be fully opened. A locking member is provided and can lock slide blocks when the windows are closed and an operating knob is operated, the slide blocks are kept at a returned position separated from the guiding glove, and the locking state of the slide blocks is released during a process that the windows changes from opening to fully-closing, and the slide blocks are allowed to approach to the guiding groove.</p> |
