Safety System for Automatic Door
OwnerIl Shik YOONinventor
Life of this patent
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Abstract
A safety system configured to prevent a finger from getting jammed in a gap between an automatic door and a door frame and stop an operation of the automatic door when the automatic door is caught by an obstacle. The safety system prevents a safety accident when a door D1, which is disposed at a gap d from a doorframe 10, configured to slide, and made of a transparent or semi-transparent plate shaped material, is opened or closed while sliding relative to a column 20 on which a push switch for opening the door D1 is installed The safety system for an automatic door includes a first switch means S1 installed along a front edge of the door D1, and a second switch means S2 installed at a front end of the doorframe 10 to cover the gap d between a surface of the door D1 and the front end of the doorframe 10.
Claims8
A safety system for an automatic door, which prevents a safety accident when a door D1, which is disposed at a gap d from a doorframe 10, configured to slide, and made of a plate shaped material, is opened or closed while sliding relative to a column 20 on which a push switch for opening the door D1 is installed, the safety system comprising:
- a first switch means S1 installed along a front edge of the door D1, wherein the first switch means S1 comprises:
- a first stationary frame 100 fixed to the door and configured to surround the front edge of the door D1;
- a first rotary frame 110 configured to hingedly rotate relative to the first stationary frame;
- and
- first detection means 120 installed in the first rotary frame 110 and configured to detect a motion of the first rotary frame;
- wherein the first rotary frame 110 extends along a part or an entirety of a length of a front edge of the first stationary frame 100, one end 112 of the first rotary frame 110 is rotatably coupled to the first stationary frame and defines a rotation axis of the first rotary frame to enable the first rotary frame to hingedly rotate relative to the first stationary frame, and the other end 114 of the first rotary frame 110 engages in the form of a loop with the first stationary frame 100 to enable the first rotary frame 110 to move relative to the front edge of the first stationary frame, and
- wherein when a front edge of the first rotary frame 110 collides with an external object and the first rotary frame 110 rotates about one end 112 which is the rotation axis, the first detection means 120 detects the rotational motion and transmits a detected signal to an automatic door controller to stop an operation of the automatic door or rotate the automatic door reversely.
Dependencies are inferred from the claim text.