Lifting-lowering Sliding Group for Door Wings with Elastic Counterbalance
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Solution Overview
Problem
Conventional lifting-lowering and sliding groups for door or window wings face issues such as excessive friction, limited air or water tightness, and inefficient weight management, leading to difficulties in opening and closing, as well as the need for complex adjustments to maintain sealing effectiveness.
Innovation Solution
The design incorporates a lifting-lowering and sliding group with elastic means guided between support bodies and counter elements, allowing for adjustable elastic reaction to counteract wing weight and facilitate smooth operation, featuring adjustable compression states and accessible adjusting means to modify the elastic force without disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polymeric gaskets (tubes, bands) are used to improve air/water tightness, then sealing effectiveness is improved, but friction increases excessively making opening/closing difficult
Solution Approach 1:
The gasket system is segmented into multiple sealing points along the wing perimeter, with each section independently contacting the frame. This distributes the sealing force across multiple smaller contact areas rather than one large continuous contact, reducing overall friction while maintaining sealing effectiveness
Solution Approach 2:
The gasket material properties are optimized locally at the sealing interface to provide high friction only where needed for sealing, while other portions of the gasket system maintain lower friction characteristics to facilitate smooth opening and closing operations
2Ease of operation
If brush gaskets are used to reduce friction, then ease of operation is improved, but air/water tightness deteriorates
Solution Approach 1:
The gasket system employs composite construction combining different material properties - using materials with low friction coefficients for the sliding portions while incorporating high-friction sealing surfaces at the sealing interfaces, achieving both ease of operation and reliable sealing
3Ease of operation
If elastic means are added to counteract wing weight, then ease of operation is improved, but device complexity increases
Solution Approach 1:
Elastic means (springs) are integrated into the lifting-lowering mechanism to provide counterbalancing force that offsets the wing's weight. The springs are positioned to automatically engage and disengage during operation, providing assistance during the lifting phase without interfering with the sliding function, thus reducing the effort needed to operate the mechanism while adding only minimal structural complexity
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
This solution enables effortless wing movement by reducing the force required to open and close the wing, preventing spontaneous return to the closed position and allowing for easy adjustment of the elastic reaction to match the wing's weight, ensuring effective sealing throughout the entire lifting-lowering stroke.
Implementation Method 1
the elastic means (20a, 20b) are compressed between the respective support body (14a, 14b) and counter element (21a, 21b) in a first compression state... the elastic means (20a, 20b) are compressed between the respective support body (14a, 14b) and counter element (21a, 21b) in a second compression state
Data Source
Figure 1
Figure 2a
Figure 2b
AI summary
The present invention refers to a lifting-lowering and sliding group (10) for door or window wings (102), comprising at least one carriage (11a, 11b) in turn comprising a support body (14a, 14b) which is provided with support and rolling elements (15a, 15b) and which is associable with a sliding guide (106) in a mobile manner in translation along the sliding direction (A) of a door or window wing (102), an attachment body (17a, 17b) to the wing (102) which is fixable to its lower crossbar (104) and which is associated with the support body (14a, 14b) in a mobile manner on a plane parallel to the lying plane of the wing (102) with a relative combined translation motion along the sliding direction (A) and along a direction (B) orthogonal to it for lifting and lowering the wing (102) with respect to the support body (14a, 14b), in which the carriage (11a, 11b) has an end associable with a manoeuvring mechanism (12, 13) of the relative displacement of the attachment body (17a, 17b) with respect to the support body (14a, 14b), wherein the manoeuvring mechanism is activatable by a control handle (105) associable to the wing, the group being characterised in that the support body (14a, 14b) of the at least one carriage (11a, 11b) comprises a guide body (19a, 19b) of elastic means (20a, 20b) acting between the support body (14a, 14b) and a counter element (21a, 21b) associable with the lower crossbar (104) of the wing (102), in which the counter element (21a, 21b) is associated with the guide body (19a, 19b) in a mobile manner in translation along the sliding direction (A) and along a direction orthogonal to it (B).