Telescopic Panic Fitting Handle Bar Assembly
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Solution Overview
Problem
Conventional panic fittings for escape doors are structurally complex and require significant assembly effort due to multiple loose parts, making them difficult to install and limiting their flexibility for use on various door types.
Innovation Solution
A panic fitting with a telescopic handle bar and receptacles that can be compressed or designed with grooves and eccentrics to allow for adjustable length, enabling easier assembly by shortening the handle bar for insertion between supports, and featuring a mechanism that allows the handle bar to be inserted at an angle, simplifying the mounting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional panic fittings are used with multiple loose parts, then the door lock can be actuated reliably, but the assembly effort and installation complexity increase significantly
Solution Approach 1:
The patent combines multiple loose parts into an integrated panic bar assembly where the handle bar, lever arms, and door lock actuation mechanism are merged into a single coordinated unit. This reduces the number of separate components that need to be assembled while maintaining reliable door lock actuation through the integrated design.
2Device complexity
If conventional panic fittings with fixed-length handle bars are used, then the structure is simple, but the adaptability to different door types is limited
Solution Approach 1:
The patent implements a telescopic handle bar that can dynamically adjust its length to adapt to different door types and installations. The handle bar includes extendable sections that allow it to be shortened for assembly and then extended to the required operational length, providing versatility across different door configurations while maintaining a relatively simple overall structure.
3Ease of manufacture
If the handle bar length is fixed, then manufacturing is simpler, but the ease of installation on various door types is reduced
Solution Approach 1:
The handle bar is segmented into multiple sections that can be telescoped or extended. This segmentation allows the handle bar to be manufactured in standardized sections and then assembled to different lengths as needed for various door types, combining manufacturing simplicity with installation flexibility.
4Adaptability or versatility
If multiple variants of panic fittings are produced for different door types, then the adaptability increases, but the device complexity and inventory requirements increase
Solution Approach 1:
The patent designs a universal panic bar assembly with a telescopic handle bar that can accommodate multiple door types through a single design. The adjustable length mechanism allows the same basic assembly to be configured for different door widths and types, eliminating the need for multiple specialized variants and reducing inventory complexity while maintaining broad adaptability.
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 telescopic design significantly reduces assembly effort, allows for flexible installation on different door types, and reduces the number of variants needed, enhancing the ease of use and adaptability of the panic fitting.
Implementation Method 1
at least one compression spring arranged between the two rod sections, by means of which the two rod sections can be pushed apart
Data Source
Figure 1
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Figure 4
AI summary
A panic hardware fitting (1) with a handle (31) for an emergency exit door is proposed, which is particularly easy to install. For this purpose, it is provided that the handle (31) is telescopic and its length is shortened for insertion, or that the handle (31) is inserted into a spring-loaded sliding carriage of a receptacle (511, 512), wherein the spring-loaded sliding carriage can be pushed back, or that the handle (31) is inserted at an angle into an elongated groove (512, 522) and then straightened.