Universal Elevator Sill Modular Width Adaptation
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Solution Overview
Problem
The challenge in replacing elevators is finding a sill with the same basic size to match the new elevator, as old sills have fixed dimensions, making it difficult to install the landing door correctly.
Innovation Solution
A universal sill with a middle part and additional parts that can be assembled to vary in width, using dovetail grooves and symmetrical design for flexible assembly, allowing different widths and heights to adapt to various elevator sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-size sill is used for elevator replacement, then the installation process becomes difficult when the new elevator size differs from the old sill, but using a fixed-size sill simplifies the manufacturing and inventory management
Solution Approach 1:
The sill is divided into a middle part and additional parts that can be assembled together. The middle part contains the guide rail, while additional parts can be added on either side to adjust the total width. This segmentation allows the sill to be customized for different elevator sizes without requiring a completely different sill for each size.
Solution Approach 2:
The universal sill design allows one middle part to serve multiple functions by accommodating different numbers and configurations of additional parts. This single middle part design can adapt to various elevator widths, making it a universal component that replaces the need for multiple fixed-size sills.
2Manufacturing precision
If custom-sized sills are manufactured for each elevator replacement, then perfect fit is achieved, but the manufacturing time and cost increase significantly
Solution Approach 1:
The middle part is pre-manufactured with standardized dimensions and the guide rail structure. The additional parts are also pre-fabricated in standard sizes. This preliminary preparation of standardized components allows for quick assembly during elevator replacement without requiring custom manufacturing for each specific case.
Solution Approach 2:
The sill configuration is made dynamic through the modular assembly system. Instead of a fixed static design, the sill can be dynamically adjusted by adding or removing additional parts to match the specific elevator size requirements, combining standardization with adaptability.
3Adaptability or versatility
If the sill width is increased to accommodate larger elevators, then larger elevators can be installed, but the sill becomes too wide for smaller elevators
Solution Approach 1:
The sill is segmented into a mandatory middle part and optional additional parts. This segmentation allows installers to create the exact width needed by combining the middle part with the appropriate number of additional parts, making installation easier for both small and large elevators.
Solution Approach 2:
Different parts of the sill have different functions: the middle part provides the essential guide rail structure, while additional parts provide width adjustment. This local differentiation allows the sill to be customized locally to match the specific elevator size without affecting the core functionality.
Data Source
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Figure 3
AI summary
The present disclosure discloses a universal sill, including: a middle part (C), comprising a guide rail configured to guide a door to open and close in a length direction; and one or more additional parts (A; B), configured to be assembled to the middle part, a total width of the middle part and the one or more additional parts after assembly defines a width of the universal sill, and the width of the universal sill varies according to the one or more additional parts actually assembled.