Greenhouse Sliding Door Without Threshold Strip
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Solution Overview
Problem
Conventional greenhouse sliding doors often have a lower threshold strip that can trap debris, impede entry, and cause tripping hazards, and the upper guide tracks can be unsightly, especially in smaller greenhouses.
Innovation Solution
The implementation of a sliding door system supported by two telescopic guides, one located at the top and one at the bottom, where the top guide is above the doorway and the bottom guide is to the side, eliminating the need for a lower threshold strip and allowing for a more secure and smoother operation, with the guides retracting when the door is fully open or closed to enhance strength and concealment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lower threshold strip is provided to support the sliding door, then the door can be supported and slide, but stones can become trapped in the threshold strip which can impede opening of the door and cause tripping hazards
Solution Approach 1:
The patent removes the lower threshold strip entirely from the greenhouse door system. Instead, the door is supported by upper and side guides that are positioned above the ground level, eliminating the threshold that would trap stones and create tripping hazards while maintaining door support and sliding functionality.
Solution Approach 2:
The patent relocates the door support mechanism from the lower horizontal dimension (threshold strip at ground level) to the upper vertical dimension (guides positioned above the door opening). This dimensional shift allows the door to be supported without requiring a lower threshold, thereby eliminating the harmful effects of debris trapping and tripping hazards.
2Reliability
If an upper guide track is provided to support the sliding door, then the door can be supported and slide, but the guide track may extend beyond the edge of the greenhouse which some people may consider to be unsightly
Solution Approach 1:
The patent combines the upper guide track with the decorative ridge trim of the greenhouse roof. The guide track is integrated into the existing aesthetic feature at the ridge line, so the functional element (guide track) becomes part of the decorative trim, eliminating the appearance of an unsightly protruding track while maintaining door support functionality.
Solution Approach 2:
The patent applies the guide track specifically at the ridge line location where decorative trim is already present. By positioning the guide track locally at this specific location with aesthetic considerations, the functional requirement for door support is met while the visual impact is minimized through integration with the decorative elements.
3Ease of operation
If sliding doors are provided in greenhouses, then entry and exit is enabled, but the door and its supports take up space and may obstruct views or aesthetics
Solution Approach 1:
The patent positions the door support guides in the vertical dimension (above the door opening at the ridge line) rather than extending them horizontally beyond the greenhouse edges. This vertical positioning allows the door to slide horizontally for entry and exit while the supports occupy minimal horizontal space, preserving views and aesthetics.
Data Source
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AI summary
A domestic greenhouse comprises at least one side wall, a roof having at least one roof panel, and at least one end wall, and at least one door that in a closed position obscures a doorway opening provided in one of the end walls or side walls and in an open position enables a person access through the doorway. The door comprises a sliding door that is supported by at least one support assembly comprising a telescopic guide having a fixed part and a moving part, in which one of the parts is secured to the wall of the greenhouse and the other part secured to the door to support the door in such a way that the doorway does not have a lower threshold strip.