CPC E05D 15/165 (2013.01) [B01L 1/00 (2013.01); E05B 65/0075 (2013.01)] | 14 Claims |
1. A feedback mechanism for a biological safety cabinet, the biological safety cabinet comprising a movable glass window and a cover plate disposed in front of at least a portion of the glass window, the feedback mechanism comprising:
a monitor control component comprising a roller element being fixedly disposed with respect to the cover plate and comprising a rollable roller; and
a contact component being fixedly disposed relative to the glass window so that the contact component can move relative to the roller with movement of the glass window, the contact component comprising a recess for receiving the roller,
wherein the contact component moves with the glass window to a position corresponding to the roller when the glass window moves relative to the cover plate, such that the roller rolls into the recess, allowing the feedback mechanism to generate tactile feedback, and
wherein the monitor control component further comprises at least a first micro switch and a second micro switch fixedly disposed with respect to the cover plate and spaced apart from each other along a moving direction of the glass window, and wherein the first micro switch and the second micro switch are configured to contact the contact component simultaneously when the roller rolls into the recess, thereby generating a first trigger signal and a second trigger signal being used to provide feedback of a position of the roller with respect to the recess.
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