Movable Partition Closure Assembly with Thermal Locking Mechanism
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Solution Overview
Problem
Movable partitions, especially those used as fire barriers, face challenges in maintaining a secure seal and preventing separation due to heat-induced warping, which can compromise their effectiveness during a fire.
Innovation Solution
A closure assembly with a temperature-sensitive locking mechanism that secures the leading end assembly to an adjacent structure only when the temperature reaches a predetermined level, using latching members and a fusible link to ensure the partition remains closed during a fire without obstructing escape routes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the movable partition is constructed with metal lead post assembly and door post assembly connected directly together, then the partition can provide a secure fire barrier, but heat is readily transmitted through the assemblies causing heat-induced warping and separation
Solution Approach 1:
The patent introduces an intermediate thermal barrier layer between the metal lead post assembly and door post assembly. This intermediary layer acts as a heat阻断, preventing direct thermal conduction while maintaining the structural connection and fire barrier integrity. The thermal barrier layer is specifically designed to block heat transmission that would otherwise cause warping and separation.
Solution Approach 2:
The patent employs composite construction by combining metal components with non-metallic thermal barrier materials in the lead post and door post assemblies. This composite structure leverages the strength and fire resistance of metal while incorporating materials with low thermal conductivity to prevent heat-induced warping and maintain structural integrity during fire conditions.
2Ease of operation
If the movable partition is kept normally open for escape routes, then emergency evacuation is facilitated, but the partition cannot provide a secure fire barrier when closed
Solution Approach 1:
The patent incorporates a temperature-sensitive locking mechanism that is pre-configured to activate automatically when a predetermined temperature threshold is reached during a fire. This preliminary action ensures that the partition secures itself without requiring manual intervention, maintaining escape route accessibility during normal conditions while providing automatic fire barrier security when needed.
Solution Approach 2:
The temperature-sensitive locking mechanism enables the partition to self-secure in response to fire conditions. The system monitors temperature and automatically engages the locking mechanism when heat conditions indicate a fire, allowing the partition to serve itself without external control while maintaining ease of operation during normal use.
3Reliability
If the partition is designed to automatically close upon fire detection, then fire barrier function is activated, but the partition may obstruct escape routes if not properly controlled
Solution Approach 1:
The patent utilizes temperature as a critical parameter to control partition closure behavior. The temperature-sensitive locking mechanism is calibrated to a predetermined temperature threshold that distinguishes between normal conditions (partition remains open for escape) and fire conditions (partition locks closed for fire barrier). This parameter-based control ensures reliable fire barrier activation while preventing obstruction of escape routes during false alarms or normal temperature variations.
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 closure assembly effectively maintains the integrity of the fire barrier by preventing separation under heat conditions while allowing safe opening during emergencies, enhancing both safety and reliability of movable partitions.
Implementation Method 1
the locking mechanism may include a fusible link configured to melt at a predetermined temperature
Implementation Method 2
A closure assembly with a temperature-sensitive locking mechanism that secures the leading end assembly to an adjacent structure only when the temperature reaches a predetermined level
Data Source
AI summary
Closure assemblies for movable partitions may include a leading end assembly having a first side and a second side and a latching assembly coupled thereto. The latching assembly may include a first latching member having a portion thereof positioned proximate to the first side and a second latching member having a portion thereof positioned proximate to the second side. Movable partition systems may include a plurality of hingedly coupled panels movably coupled to a track, and a leading end assembly coupled to at least one panel of the plurality of hingedly coupled panels. The leading end assembly may include at least two latching features positioned on the leading end assembly. Methods of securing a movable partition may include retaining a first latching member and a second latching member in a retracted position and extending the first latching member and the second latching member to an extended position.