Spring-Loaded Window Drive Bolt with Rotatable Locking Hook
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Solution Overview
Problem
Existing window sash drives with spring-loaded suspension bolts can unintentionally loosen due to axial forces, risking the window sash to fall and potentially injure people, due to the lack of secure attachment during operation.
Innovation Solution
A drive unit with a spring-loaded push-button-like bolt that includes locking means allowing adjustment between a release and locking position, ensuring secure attachment by preventing axial displacement, featuring a rotatable locking part or locking hook that can be manually controlled for secure locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a spring-loaded push-button-like bolt is used for mounting the drive unit, then the ease of installation is improved, but the reliability deteriorates due to unintentional loosening under axial forces
Solution Approach 1:
The locking means (locking element or locking hook) are pre-configured to automatically engage and prevent axial displacement of the bolt. The locking element can be rotated into a locking position, or the locking hook can automatically engage with the bracket, creating a preliminary counter-action that prevents the harmful effect of axial forces causing unintentional loosening.
Solution Approach 2:
The mounting system transitions from a static spring-loaded bolt to a dynamic system where the locking means can be actively engaged or disengaged. The rotatable locking element or spring-loaded locking hook provides a dynamic locking mechanism that maintains reliability while preserving the ease of installation through controlled operation.
2Reliability
If locking means are added to prevent bolt displacement, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The locking means are integrated with the spring-loaded push-button-like bolt assembly. The locking element is rotatable relative to the bolt, and the locking hook is arranged within the bolt structure, merging the locking function with the existing mounting mechanism rather than adding completely separate components.
Solution Approach 2:
The locking element or locking hook is embedded within or integrated into the spring-loaded bolt structure. The locking element can be rotatable within the bolt, and the locking hook is arranged in the bolt to engage with the bracket, creating a nested configuration that reduces overall 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
The solution provides a reliable and secure attachment of the drive unit to the window sash or frame, preventing unintentional loosening and ensuring safety by maintaining the drive unit's position during operation.
Implementation Method 1
a spring unit which exerts a spring force on the push-button-like bolt in order to maintain the bolt in its extended position
Implementation Method 2
Locking means are associated with the spring-loaded, push-button-like bolt, which are adjustable between a release position and a locking position, in which the spring-loaded, push-button-like bolt is blocked in its extended position
Data Source
Figure 1a~1c
Figure 2~6
Figure 7~8
AI summary
A drive for a window sash or the like comprises a drive unit for moving the sash relative to a stationary frame by means of a drive element, wherein the drive unit can be attached to the sash or the frame via a bracket by means of bolts arranged on the drive unit engaging corresponding receptacles in the bracket. At least one bolt is provided as a spring-loaded, push-button-like bolt, which is held in its extended position. Locking means are associated with this bolt. These locking means are adjustable between a release position, in which the spring-loaded, push-button-like bolt can be pressed axially from its extended position into the drive unit against the spring force, and a locking position, in which the spring-loaded, push-button-like bolt is blocked in its extended position.