Ceiling Cross Runner Heat Expansion Nose Section
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Solution Overview
Problem
Existing ceiling frames with heat expansion nose sections are prone to fluctuating expansion behavior, are difficult and expensive to produce, and pose risks during mounting due to sharp edges and potential damage.
Innovation Solution
A ceiling frame design with a cross runner featuring a heat expansion nose section that is integral to the cross runner, with a cut extending partially in the longitudinal direction and an impression that allows for stable and predictable expansion, reducing production costs and user risk during mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heat expansion nose section is provided in the ceiling frame, then the heat retardant properties are improved and expansion is permitted, but the expansion behavior fluctuates considerably and the cross runner becomes difficult and expensive to produce
Solution Approach 1:
The nose section is divided into a first part and a second part by a cut, allowing independent deformation of each part during heat expansion. This segmentation enables controlled expansion behavior while simplifying the manufacturing process compared to fully separate components.
Solution Approach 2:
An impression is provided in the nose section at the intended folding line location before heat expansion occurs. This preliminary action creates a predetermined deformation path that ensures consistent expansion behavior and eliminates the need for complex real-time control during manufacturing.
2Ease of operation
If a second cut-out is provided in the top face of the hollow profile at the folding line location, then the nose section can fold sideways, but sharp edges are created that pose risks to mechanics during mounting
Solution Approach 1:
An impression is provided in the nose section at the intended folding line location before assembly. This preliminary action creates a predetermined deformation path that ensures consistent expansion behavior and eliminates the need for complex real-time control during manufacturing.
3Ease of operation
If downward pressure is applied on the nose section during mounting to connect runners, then coupling is achieved, but the nose section may be accidentally bent in an undesired direction or damaged
Solution Approach 1:
An impression is provided in the nose section at the intended folding line location before heat expansion occurs. This preliminary action creates a predetermined deformation path that ensures consistent expansion behavior and eliminates the need for complex real-time control during manufacturing.
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 design provides a stable and strong nose section that can be easily bent and reused, absorbing expansion forces without excessive deformation, ensuring reliable performance under heat and reducing the risk of damage or injury during installation.
Implementation Method 1
A folding line is provided around which the nose section is able to fold sideways, that is to say fold along a vertical axis
Implementation Method 2
The heat expansion nose section permits expansion of the ceiling frame in the case of for example heat and/or fire
Data Source
Figure 1~2
Figure 3A~3C
Figure 4~5
AI summary
A ceiling frame for holding ceiling panels, comprising a plurality of main runners, at least one cross runner 2 having a longitudinal direction and coupling means 7 for coupling the main runners with each other, in which the cross runner 2 comprises an upright longitudinally extending web 3 having flanges 4 extending in opposite sideways directions at its lower end for supporting edges of ceiling panels upon, and having a longitudinally extending hollow profile 6 at its upper end for providing strength. The cross runner 2 further comprises a heat expansion nose section 10 provided on at least one of its free end parts, in which the heat expansion nose section 10 forms an integral part of the cross runner 2 in that it comprises a free end part 11 of the hollow profile 6 which is separate from at least a lower part of the web 3 by a cut 12 which is at least partially 12a extending in the longitudinal direction up till an intended folding line 25 such that the nose section 10 is able to fold around the folding line 25. An impression 21 is provided in the free end part of the hollow profile 6. The impression 21 extends over at least a lower part 20 of the hollow profile 6. The cut 12 also extends partially 12b upwards through the lower part 20 of the hollow profile 6. The upwardly extending part 12b of the cut 12 runs through the impression 21, and an upper part 23 of the hollow profile 6 which lies substantially in line with the upwardly extending part 12b of the cut forms the folding line 25.