Opening/Closing Device Brake Engage Part Spatial Reconfiguration
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Solution Overview
Problem
Conventional opening/closing devices for overhead doors face issues where the brake or lock engage parts can touch objects, and the guide rail perimeter becomes thick due to protective coverings, posing risks of objects being sandwiched or the engage parts touching objects.
Innovation Solution
The design incorporates a space adjacent to the opening/closing body's end face, encompassed by the body, guide rail, and support member, with a detach spot for the engage and brake parts, preventing contact and maintaining a thin guide rail perimeter by arranging these components within this space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cover member is added to protect the brake engage part, then safety is improved, but the guide rail perimeter becomes thick
Solution Approach 1:
The brake engage part is repositioned from protruding outward to operating within the enclosed space formed by the guide rail and support member. This spatial reconfiguration eliminates the need for external cover members while maintaining safety, as the engage part operates in a protected internal zone rather than requiring an additional protective layer that would increase the perimeter.
Solution Approach 2:
The protective function previously requiring a separate cover member is extracted and integrated into the existing structural elements (guide rail and support member) that already form an enclosed space. The structural components themselves provide the protection, eliminating the need for an additional protective element that would increase the overall perimeter.
2Ease of operation
If the brake engage part is positioned to operate exposed, then ease of operation is improved, but objects may be sandwiched or the engage part may touch objects
Solution Approach 1:
The enclosed space formed by the guide rail and support member acts as an intermediary protective zone between the brake engage part and external objects. This intermediate space allows the engage part to operate freely without direct exposure to objects, preventing sandwiching hazards while maintaining operational ease through unobstructed movement within the enclosed zone.
Solution Approach 2:
The brake engage part operates within the three-dimensional enclosed space rather than in an exposed external position. This spatial relocation to an internal dimension provides inherent protection against objects while preserving the ease of operation, as the engage part can move through the enclosed space without external interference.
3Ease of operation
If the lock engage part operates in a position protruding to the interior side, then ease of operation is improved, but objects may be sandwiched or the engage part may touch objects
Solution Approach 1:
The enclosed space formed by the guide rail and support member serves as an intermediary protective environment for the lock engage part. This intermediate zone allows the engage part to operate with ease while being shielded from external objects, preventing sandwiching hazards without requiring the engage part to protrude into exposed positions.
Solution Approach 2:
The lock engage part operates within the internal three-dimensional space rather than protruding to the exterior. This spatial reconfiguration to an internal dimension provides inherent protection against objects while maintaining operational ease, as the engage part moves within the enclosed zone without external exposure.
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
This configuration effectively prevents the brake or lock engage parts from touching objects and maintains a thin guide rail perimeter, enhancing safety and reducing the risk of objects being sandwiched or the engage parts touching objects.
Implementation Method 1
urging member (43: torsion coil spring) for urging the movable engage member in a seizing direction
Implementation Method 2
causing a brake engage part (42c: blade) of the movable member to bite into the guide rail (20)
Data Source
AI summary
Provided is an opening/closing device that includes a structure for inhibiting a brake engage part or a lock engage part from touching an object or the like and that prevent the perimeter of a guide rail from becoming thick due to the structure.In an opening/closing device in which a brake engage part is caused to engage with a first engaged part by a close prevention device to put a brake on the closing operation of an opening/closing body, a space adjacent to the horizontal width direction end face of the opening/closing body and continuous in the opening/closing body opening/closing direction is ensured, the space is encompassed in the opening/closing body opening/closing direction by the horizontal width direction end face of the opening/closing body, the guide rail, and the support member, and a detach spot for the first engaged part and the brake engage part is arranged within the space.