Handrail Coupling Mechanism Minimizing Level Difference
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Solution Overview
Problem
Existing methods for coupling long or bent handrails often result in a large level difference at the boundary of the partial handrails, which can lead to instability and discomfort during use.
Innovation Solution
A handrail configuration that includes a first partial handrail with an outer tube and insertion holes, a second partial handrail with an inner tube and opening holes, a cylindrical screw seat inside the inner tube, and connecting bolts that penetrate the insertion and opening holes to couple the handrails, allowing for adjustable coupling to minimize level differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If partial handrails are coupled by inserting one into the other and fixing with a bolt, then the handrails can be joined together, but a large level difference is generated at the boundary
Solution Approach 1:
The invention employs nested structures where the inner tube is inserted into the outer tube, and the screw seat is disposed inside the inner tube. This nested arrangement allows multiple components to be housed within each other, creating a compact coupling mechanism that minimizes the level difference at the handrail boundary while maintaining stable connection between partial handrails.
Solution Approach 2:
The screw seat acts as an intermediary component between the inner tube and the connecting bolt. It provides a mounting surface for the screw hole that receives the connecting bolt, enabling secure fastening while allowing the screw seat to be positioned inside the inner tube. This intermediary structure helps reduce the protrusion at the coupling boundary.
2Adaptability or versatility
If a screw hole is formed directly in the inner tube, then the structure is simpler, but the screw seat allows for adjustable coupling to minimize level differences
Solution Approach 1:
The screw seat is designed to be movable along the inner tube, allowing adjustment of its position to achieve optimal coupling alignment. This dynamic capability enables the coupling mechanism to adapt to different handrail configurations and minimize level differences at boundaries, providing versatility in installation scenarios.
Solution Approach 2:
The coupling mechanism is divided into distinct functional segments: the outer tube for structural support, the inner tube for housing the screw seat, and the screw seat itself for providing the screw hole interface. This segmentation allows each component to perform its specific function optimally while enabling adjustable coupling through the movable screw seat.
Data Source
AI summary
A handrail includes a first partial handrail including an outer tube having at least one insertion hole on an outer peripheral surface of the outer tube, a second partial handrail including an inner tube having at least one opening hole on an outer peripheral surface of the inner tube, the inner tube being inserted into the outer tube, a cylindrical screw seat disposed inside the inner tube of the second partial handrail so as to be turnable in a circumferential direction and having at least one screw hole on an outer peripheral surface of the cylindrical screw seat, and at least one connecting bolt that penetrates the insertion hole and the opening hole and is fastened to the screw hole to couple the first partial handrail and the second partial handrail.