Pinch-Preventing Safety Hinge With Rotating Shielding Unit
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Solution Overview
Problem
Conventional hinged doors pose a risk of users being pinched when opening or closing, as a gap forms between the doorjamb and the door, which can lead to accidents.
Innovation Solution
A pinch-preventing safety hinge is designed with a shielding unit that rotates with the hinge mechanism, ensuring the gap between the doorjamb and the door remains closed, preventing exposure and facilitating easy assembly and installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional hinged door is used with a gap between the doorjamb and door, then the door can be easily opened and closed, but a part of a user's body may be pinched in the gap causing accidents
Solution Approach 1:
A shielding unit is introduced as an intermediary component between the door and doorjamb. This shielding unit includes a shielding plate that rotates with the door during opening/closing operations, physically blocking the gap and preventing direct contact between the user's body and the hazardous gap area, thereby eliminating the pinch hazard while maintaining smooth door operation
2Object-affected harmful factors
If a shielding unit is added to prevent the gap exposure, then user safety is improved, but the device complexity increases
Solution Approach 1:
The shielding unit is merged with the existing hinge mechanism by utilizing the door's rotational motion. The shielding plate is coupled to the door such that it rotates automatically during door opening/closing operations, eliminating the need for separate actuators, motors, or control systems. This integration maintains safety functionality while minimizing additional complexity in the hinge structure
Solution Approach 2:
The shielding unit operates autonomously by utilizing the door's own rotational movement to drive the shielding plate. As the door opens or closes, the shielding plate automatically rotates into position to block the gap, requiring no external power source or additional control mechanisms, thereby preventing pinch hazards without significantly increasing device complexity
Data Source
AI summary
The present invention provides a pinch-preventing safety hinge for a hinged door, which connects a door to a doorjamb mounted in a wall so that the door is opened or closed while rotating about the doorjamb and which includes a hinge unit including a fixing member secured to the doorjamb and a rotary member secured to one side end of the door and hingedly coupled to the fixing member so as to rotate, and a shielding unit rotatably coupled to a rotary shaft of the fixing member or the rotary member, the shielding unit being fixed to the fixing member by hinge motion of the hinge unit.