Sheet-Like Door Railing Locking Mechanism to Prevent Post Reset Injury
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Solution Overview
Problem
Existing safety door railings for children and pets suffer from potential body injuries due to the abrupt reset of vertical posts when zip ties or ropes break, causing the lock groove to misalign with the door railing lock.
Innovation Solution
A locking mechanism with a first connecting seat and a locking tab that includes a hook portion, allowing the inner door railing to swing relative to the outer door railing, ensuring the hook portion and hook groove engage securely without local reset, using a drive portion and limit piece to control the locking tab's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If zip ties or ropes are used to tie the vertical post to maintain deformation state, then the lock groove can be positioned to fit the door railing lock, but when the ties break, the vertical post resets abruptly causing body injury
Solution Approach 1:
A buffer component is introduced as an intermediary between the vertical post and the locking mechanism. This buffer absorbs the reset force when zip ties break, preventing direct contact between the resetting post and human body, thereby eliminating the injury hazard while maintaining locking reliability
Solution Approach 2:
The buffer component is pre-installed in the locking mechanism to cushion against potential reset forces before they can cause harm. This beforehand cushioning ensures that even if zip ties fail, the harmful effects are mitigated by the buffer's absorbing capability
2Manufacturing precision
If the vertical post is tilted to prevent mismatch between lock groove and door railing lock, then positioning accuracy improves, but the structure becomes more complex and requires additional deformation compensation
Solution Approach 1:
The vertical post is designed to be dynamically adjustable rather than statically tilted. The post can deform elastically during installation to achieve proper alignment, then return to its original position, eliminating the need for permanent tilts or complex adjustment mechanisms
Solution Approach 2:
The positioning accuracy is achieved by temporarily changing the deformation parameter of the vertical post during installation rather than permanently altering its geometry. This allows precise positioning without increasing structural complexity
Data Source
AI summary
The present invention discloses a locking mechanism and a sheet-like door railing therewith and, compared with the traditional one, the present invention, based on the prior art, through the fitted connection between the hook portion and hook groove, ensures that the outer door railing remains fitted connection with the locking mechanism, without local reset, when the zip tie or rope at the corresponding position is cut, thereby avoiding possible body injury caused by reset.