Carriage End Stop Insertion in Embedded Ceiling Rail
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Solution Overview
Problem
Conventional overhead lift systems require access to the sides of the rail for installing, servicing, or removing the carriage end stop, which can be difficult or destructive when the rail is embedded in a ceiling, as only the bottom is exposed.
Innovation Solution
An overhead lift system with a rail featuring a longitudinal opening and a carriage end stop that can be inserted and secured within the rail from underneath, using a securement device to tension the end stop against the rail's inner surface, allowing for installation and servicing without accessing the rail's sides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bolt is placed between the sides of the rail to serve as a carriage end stop, then the carriage can be prevented from rolling out the end of the rail, but access to the sides of the rail is required for installation and servicing which may be difficult or destructive when the rail is embedded in a ceiling
Solution Approach 1:
The carriage end stop is designed to be inserted from the bottom of the rail through a longitudinal opening, changing the installation dimension from side-access (horizontal) to bottom-access (vertical). This allows the end stop to be installed and serviced without accessing the sides of the rail, solving the accessibility problem when the rail is embedded in a ceiling.
Solution Approach 2:
The rail is designed with a longitudinal opening that segments the rail structure, creating an access path from the bottom of the rail. This opening allows the carriage end stop to be inserted and removed from the bottom rather than from the sides, enabling maintenance without destructive ceiling removal.
2Adaptability or versatility
If the rail is embedded within a ceiling such that only the opening of the bottom of the rail is exposed, then the rail system can be installed in environments requiring ceiling integration, but removal of the ceiling is required to access the sides of the rail for bolt installation which may be difficult and result in destruction of property
Solution Approach 1:
The carriage end stop is designed to be inserted from the bottom of the rail through a longitudinal opening, changing the installation dimension from side-access (horizontal) to bottom-access (vertical). This allows the end stop to be installed and serviced without accessing the sides of the rail, solving the accessibility problem when the rail is embedded in a ceiling.
Solution Approach 2:
The carriage end stop is designed to be self-contained with the longitudinal opening allowing it to be installed and serviced from the bottom of the rail without requiring access to the sides. This self-service design eliminates the need for destructive ceiling removal while maintaining ceiling integration.
Data Source
AI summary
An overhead lift system includes a rail having at least one wall that defines an inner channel shaped and sized to guide movement of a carriage within the inner channel. The at least one wall further defines a longitudinal opening into the inner channel. The longitudinal opening extends along a length of the rail and having a width. The overhead lift system further includes a carriage end stop having a body shaped and sized to correspond to the inner channel such that the body is insertable within the inner channel, and a securement device securably tensioning the carriage end stop against the at least one wall of the rail to prevent movement of the carriage end stop within the inner channel.


