Safety Door Lock with Elastic Reciprocating Handle
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Solution Overview
Problem
Existing safety measures for hinged doors, such as elastic materials and door holders, are cumbersome and pose risks to infants and children, as they can be easily released or manipulated, leading to safety accidents from sudden door closures.
Innovation Solution
A safety door lock using a rotatable and elastically reciprocating door handle with a rotating shaft, elastic unit, and shock absorption unit, allowing for a door opening and closing mode or a door closing prevention mode, which prevents sudden door closure by interfering with the door latch and absorbing external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If elastic material is inserted into the front end of the door, then safety accidents are prevented, but the elastic material can be released or manipulated by infants, causing harm
Solution Approach 1:
The patent introduces a door holder as an intermediary device between the door and the door frame. This door holder includes a holder body with a holder arm that can be positioned to prevent the door from closing completely. The door holder is mounted on the door frame rather than being attached to the door itself, making it inaccessible to infants inside the room. The holder arm can be adjusted to different positions to control the door opening degree, providing safety prevention without the risks associated with elastic materials that can be manipulated or released by children.
2Reliability
If door holder is mounted on the door, then door closing is prevented, but the door remains open at all times causing cumbersomeness
Solution Approach 1:
The door holder is designed with a dynamic holder arm that can be adjusted between different positions. The holder arm includes a first position where it prevents the door from closing completely, and a second position where it allows the door to close normally. This dynamic adjustability enables the door holder to provide safety prevention when needed while maintaining normal door operation flexibility, eliminating the cumbersomeness of having the door remain open at all times.
3Reliability
If protective measures are added to prevent sudden door closure, then safety is improved, but the device complexity increases
Solution Approach 1:
The door holder is designed as a multi-functional device that combines several safety functions into a single mechanism. It includes a holder body mounted on the door frame, a holder arm that can be adjusted to different positions, and a mounting structure that allows easy installation. The holder arm can prevent door closing, control door opening degree, and be adjusted between different operational states. This universal design provides comprehensive safety protection without requiring multiple separate devices, thereby limiting the increase in device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for easy adjustment between door opening and closing modes, effectively preventing safety accidents from sudden door closures and is compatible with standard doors, ensuring safety without the risks associated with previous solutions.
Implementation Method 1
an elastic unit interposed between the body and the door handle and providing restoring force to elastically reciprocate the door handle on the body in the direction of the rotating shaft
Implementation Method 2
a shock absorption unit provided at a bent part of the door handle so as to elastically rotate the door handle in the horizontal direction
Data Source
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AI summary
Disclosed is a safety door lock using a door handle. The safety door lock includes the door handle (110) configured to be rotatable in the vertical direction and to elastically reciprocate in the horizontal direction a body(120) configured to form a rotating shaft with another door handle provided at the other side of the door or to support the door handle (110) so as to be rotatable by a designated angle in connection with a door latch(13) an elastic unit(130) interposed between the body(120) and the door handle(110) and providing restoring force to elastically reciprocate the door handle on the body in the direction of the rotating shaft and a shock absorption unit(140) provided at a bent part of the door handle so as to elastically rotate the door handle in the horizontal direction. It is an object of the present invention is to provide a safety door lock which can be shifted to a door closing prevention mode and which prevents safety accidents.