Building Closure Locking Elements Rebate Chamber Design
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Solution Overview
Problem
Existing building closures with additional locking elements for burglary and explosion resistance face weaknesses due to insufficient space for locking mechanisms in areas with standard fittings, such as corner drives and hinges, limiting their effectiveness.
Innovation Solution
The building closure incorporates locking elements only in the outer chamber of the rebate chamber, arranged behind standard fittings, which are coupled to the push rod for synchronous movement, enhancing stability and allowing multiple 'short' and 'long' locking elements to cover the entire perimeter, including areas previously unsuitable for conventional locking elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If locking elements are arranged to fill the entire width of the fold area (both inner and outer chambers), then burglary and explosion protection is improved, but space conflicts with standard fittings (corner drives, hinges, tilt stays) cause weak points in the building closure
Solution Approach 1:
The rebate chamber is divided into an inner chamber (for standard fittings) and an outer chamber (for additional locking elements). This segmentation allows locking elements to be positioned in the outer chamber without interfering with corner drives, hinges, and tilt stays located in the inner chamber, resolving the space conflict while maintaining comprehensive protection.
Solution Approach 2:
The patent utilizes the depth dimension of the rebate chamber by positioning locking elements in the outer chamber, which extends further back from the groove wall. This dimensional arrangement allows locking elements to be positioned behind standard fittings in the inner chamber, creating layers of protection without spatial interference.
2Device complexity
If locking elements are positioned only in the outer chamber behind standard fittings, then space conflicts are avoided, but the depth of locking elements is reduced lowering their individual stability
Solution Approach 1:
The patent combines multiple locking elements (both in inner and outer chambers) to work together as a unified locking system. The locking elements in the outer chamber are coupled to the push rod for synchronous movement, ensuring that all locking elements engage simultaneously. This merging compensates for the reduced individual depth by distributing the locking function across multiple elements that act together.
Solution Approach 2:
The locking elements in the outer chamber are coupled to the push rod such that they move synchronously with the standard locking elements in the inner chamber. This continuous synchronous action ensures that all locking elements engage at the same time, maintaining the overall stability and reliability of the building closure despite the varying depths of individual elements.
3Area of stationary object
If numerous short locking elements are arranged in the outer chamber, then coverage of the entire perimeter is achieved including tilting shears and corner drives, but the individual stability of each locking element is reduced
Solution Approach 1:
The push rod serves multiple functions: it actuates both the standard locking elements in the inner chamber and the additional locking elements in the outer chamber through synchronous movement. This universal actuation mechanism allows numerous short locking elements to be controlled by a single component, maintaining system stability while achieving comprehensive perimeter coverage including difficult-to-access areas like tilting shears and corner drives.
Data Source
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AI summary
The building closure (1') has a door frame anchored at a building part, and a wing frame rotatably mounted in the window frame at rotation axles. Locking elements (22, 23) provided at sides of the door frame and the wing frame are arranged in an outer chamber. The locking elements are viewed from an inner side of the building closure and provided in a direction perpendicular to a plane of a panel of the wing frame. Fitting parts are arranged in an inner chamber of a rebate chamber. The locking elements are provided beside the fitting parts.