Concealed Lift-and-Slide Window Handle Mechanism
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Solution Overview
Problem
Existing handles for large raisable doors and windows lack a concealed mechanism suitable for lift-and-slide systems, leading to an unsightly appearance and potential discomfort during operation.
Innovation Solution
A handle design featuring a lever with a concealed mechanism, where the rotational movement is transmitted through a rotating shaft and a transmission bushing, with all elements housed within the lever, providing a minimalist aesthetic and comfortable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a concealed mechanism is used to achieve a minimalist aesthetic, then the appearance is improved, but the complexity of housing all elements within the lever increases
Solution Approach 1:
The patent applies nesting by placing the transmission bushing inside the lever cavity, and the rotating shaft inside the transmission bushing. The retention element is housed within the lever, and the base is partially integrated into the lever structure. This nested arrangement allows all functional elements to be concealed within the lever's external form, achieving a minimalist aesthetic while organizing the complex mechanism in a compact, hierarchical structure.
2Shape
If all elements are housed within the lever cavity, then the appearance is improved, but the space requirements for the lever increase
Solution Approach 1:
The patent utilizes the large lever's extended length in the longitudinal direction to accommodate the transmission mechanism. Instead of expanding the lever's cross-sectional dimensions, the design extends the lever's length to create sufficient internal volume. The transmission bushing and shaft are arranged along the lever's longitudinal axis, efficiently using the available space within the lever cavity without compromising the minimalist external appearance.
3Shape
If the transmission mechanism is concealed within the lever, then the aesthetic appearance is improved, but the ease of operation may be compromised
Solution Approach 1:
The patent extracts the uncomfortable elements (transmission bushing, shaft, retention element) from the user's direct interaction zone and houses them within the lever's internal cavity. Only the lever's external surface remains visible and tactile for the user. The operational interface is simplified to just the lever handle, eliminating any exposed mechanical components that could cause discomfort or interfere with the user's grip and movement.
4Reliability
If a retention element is used to secure the shaft, then the reliability of the connection is improved, but the complexity of assembly increases
Solution Approach 1:
The retention element is integrated into the lever's internal structure, merging the fastening function with the lever body. The retention element is positioned within the lever cavity to engage with the shaft and transmission bushing, creating a secure connection without requiring separate external fastening components. This integration simplifies the overall assembly process while maintaining reliable mechanical connections between the moving parts.
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
The handle achieves a sleek, minimalist appearance by concealing all operational elements within the lever, while ensuring comfortable and efficient operation by eliminating uncomfortable components.
Implementation Method 1
a rotating shaft provided with one end housed in the cavity and another end intended to pass through the opening and to couple to the transmission mechanism
Implementation Method 2
a retention element that can be housed in the through holes once the base has been joined to the wing, and tightened on the shaft, preventing the movement thereof in the longitudinal direction
Data Source
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AI summary
The invention relates to a handle for large raisable doors and windows, comprising a lever (5) linked to a profile (2) of a door or window sash, with a cavity (6) spacious enough to house all the necessary elements to transmit the rotational movement of the lever to the transmission mechanism so that the rotational movement of the lever is transformed into a translational movement of the mechanism arranged inside the door or window sash for the release or fastening to the window frame.