Window Sill Retention Assembly for Wind-Load Removal
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Solution Overview
Problem
Existing window sill hold-down systems are difficult to assemble and disassemble without causing damage, particularly when securing metal or stone window sills against wind and suction loads, leading to high labor and maintenance costs.
Innovation Solution
A hold-down arrangement featuring a first and second holding partner, where the first partner is movable relative to the second, allowing for vertical immobilization in the assembly state while enabling translational movement in the depth direction, facilitating easy assembly and disassembly without damaging adjacent sealing planes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is used as hold-down device to connect window sill with waterproof layer, then strong adhesive force secures window sill against wind and suction loads, but window sill cannot be dismantled without destroying it and adjacent sealing planes
Solution Approach 1:
The hold-down device is divided into two separate holding partners: a first holding partner attached to the window sill and a second holding partner attached to the waterproof layer. These segments can be independently positioned and connected through a detachable connection, allowing the window sill to be removed without destroying the waterproof layer or adjacent sealing planes.
Solution Approach 2:
The connection between the two holding partners is designed to be dynamically changeable between a locked state (providing strong holding force against wind and suction) and an unlocked state (allowing easy dismantling). This dynamic connection mechanism enables the system to switch between secure attachment and easy removal based on operational needs.
2Reliability
If wind suction anchorage with L-shaped brackets is used to secure sheet metal window sill, then effective hold-down against wind loads is achieved, but significantly more installation work is required compared to adhesive
Solution Approach 1:
The anchorage system is segmented into two separate holding partners that can be independently installed and positioned. The first holding partner is attached to the window sill while the second is attached to the waterproof layer, allowing for simpler, more flexible installation compared to traditional L-shaped brackets that require extensive drilling and anchoring into the building structure.
Solution Approach 2:
The second holding partner attached to the waterproof layer serves as an intermediary element that simplifies the anchorage process. Instead of directly anchoring L-shaped brackets into the building structure, the system uses this intermediate connection point on the waterproof layer, significantly reducing installation complexity while maintaining hold-down effectiveness.
3Stability of the object's composition
If first holding partner is fixed to window sill and second holding partner is fixed to window sill bearing, then vertical mobility is blocked in hold-down state, but translatory mobility in depth direction should be permitted for proper assembly
Solution Approach 1:
The connection mechanism between the two holding partners is designed with localized functional zones: one region provides vertical constraint through interlocking features or friction engagement, while another region allows translatory movement in the depth direction through clearance fits or sliding interfaces. This local differentiation of connection qualities achieves both vertical stability and assembly mobility without requiring complex overall mechanisms.
Data Source
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AI summary
In a holding arrangement (1) for securing a window sill (3), in particular a sheet metal window sill, a stone window sill or the like, to a window sill support (51) of a window frame (5) against wind and/or suction loads, wherein the holding arrangement (1) comprises a first holding partner (11) that can be fixed or is fixed to the window sill (3) and a second holding partner (21) that can be fixed or is fixed to the window frame (5), wherein the first holding partner (11) is movable relative to the second holding partner (21), it is provided that the first holding partner (11) is attached or can be attached to a flat underside (31) of the window sill (3), and/or the second holding partner (21) is attached or can be attached to a flat top side (52) of the window sill support (51).