Lift Door Assembly With Weight-Supporting Quick Release
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Solution Overview
Problem
Existing door assemblies in lifts, such as boom lifts or aerial work platforms, lack efficient and user-friendly mechanisms for quickly and easily securing and releasing doors, which complicates access to the work platform.
Innovation Solution
A door assembly with a hinge, a door holder, and a locking device that allows the door support to be easily locked and unlocked by aligning openings and inserting/removing a locking device, distributing the door's weight to the holder rather than the locking mechanism, enabling quick removal and installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism is used to secure the door, then the door security is improved, but the door operation complexity increases and the locking device must support the door weight
Solution Approach 1:
The patent extracts the weight-support function from the locking device by introducing a separate door holder that receives and supports the door weight. The locking device is then simplified to only perform the locking function through a locking member that engages with a locking surface, eliminating the need for the locking device to bear the door's weight.
Solution Approach 2:
The door assembly is segmented into distinct functional components: the door holder for supporting the door weight, the locking device for securing the door, and the hinge for enabling rotation. This segmentation allows each component to be optimized for its specific function without compromising others.
2Reliability
If a traditional locking mechanism is used, then the door can be secured, but the door cannot be quickly removed or installed
Solution Approach 1:
The locking mechanism is designed with dynamic characteristics, allowing the locking member to be easily moved between locked and unlocked positions. The locking member can be quickly inserted into or removed from the locking surface, enabling rapid door operation while maintaining secure locking when engaged.
3Stability of the object's composition
If the locking device supports the door weight, then the door can be held in place, but the locking device becomes more complex and harder to operate
Solution Approach 1:
The patent extracts the weight-support function from the locking device by introducing a separate door holder that receives and supports the door weight. The locking device is then simplified to only perform the locking function through a locking member that engages with a locking surface, eliminating the need for the locking device to bear the door's weight.
Data Source
AI summary
A door assembly according to the disclosure may comprise a hinge; a door holder attached to the hinge, wherein the door holder defines a first opening; a door having a support that is receivable in the door holder, wherein the support defines a second opening that is alignable with the first opening when the support is positioned in the door holder; and a locking device that is insertable into the second opening when the support is positioned in the door holder and the second opening is aligned with the first opening to lock the door to the door holder. The locking device is removable from the second opening by pulling on at least a portion of the locking device so that the support may be removed from the door holder.