Rotatable SCBA Tank Support Assembly for Fast Emergency Egress
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Solution Overview
Problem
Emergency vehicle seats often compromise comfort and safety due to the difficulty in accommodating and securely restraining personnel equipped with self-contained breathing apparatus (SCBA) tanks, as conventional seats are not designed to comfortably support the weight and size of these equipment while allowing easy egress and securement.
Innovation Solution
The development of an adjustable emergency seat assembly with a tank support system that includes a frame with recline and sliding adjustments, an adjustable headrest, and tool-free removable seat pads, along with a tank support assembly that securely accommodates SCBA tanks of varying sizes through a halo assembly and tank clamp system, ensuring comfortable seating and quick egress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional vehicle seats are used, then the seat structure is simple, but the seat cannot comfortably support personnel wearing SCBA equipment and cannot securely restrain them
Solution Approach 1:
The seat is divided into multiple functional components: a base seat portion, a backrest portion with recline capability, and an integrated tank support assembly. This segmentation allows each component to be optimized independently - the base seat for comfort, the backrest for support and recline function, and the tank support for securing SCBA equipment, thereby improving overall ease of operation for personnel wearing SCBA while managing structural complexity through modular design
Solution Approach 2:
The seat assembly serves multiple functions simultaneously: it provides seating comfort for personnel, supports and secures the SCBA tank, and enables recline for reduced stress positioning. The integrated design combines these functions into a single multi-functional seat assembly, improving ease of operation by eliminating the need for separate equipment while the modular architecture manages the inherent complexity
2Reliability
If SCBA tanks are secured in the seat, then tank support and personnel restraint are improved, but egress time is increased due to difficulty in removing equipment
Solution Approach 1:
The tank support assembly incorporates dynamic elements including a reclining backrest that can be adjusted to different angles and a quick-release mechanism for the tank. The backrest can be reclined to reduce stress on the personnel and facilitate easier tank removal during egress. The dynamic adjustability allows the system to transition from a secure support state during operation to an easy-release state during emergency egress, maintaining reliable tank support while minimizing equipment removal time
Solution Approach 2:
The tank support system is designed to facilitate self-service removal of the SCBA tank during egress. The quick-release mechanism and adjustable backrest allow personnel to independently and rapidly remove their own equipment without assistance, improving egress speed while maintaining secure tank support during normal operation
3Adaptability or versatility
If fixed seat configurations are used, then manufacturing is simpler, but adaptability to different personnel and equipment sizes is reduced
Solution Approach 1:
The seat assembly incorporates adjustable elements including a reclining backrest with multiple position settings and an adjustable headrest. These dynamic features allow the seat to adapt to different personnel sizes and equipment configurations without requiring multiple fixed seat designs. The adjustability mechanisms are integrated into the manufacturing process, balancing versatility with manufacturing feasibility through standardized adjustable components rather than fully custom designs for each configuration
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
A tank support assembly (34; 334) is provided for retaining Self-Contained Breathing Apparatus (SCBA) tanks (36) in a cab of an emergency vehicle. The tank support assembly (34; 334) comprises a main support (120; 420) configured to be secured within the cab of the emergency vehicle, a tank securing device (140; 440) with a first tank securement (144; 444) configured to engage SCBA tanks of a first diameter and a second tank securement (146; 446) configured to engage SCBA tanks of a second diameter separately from the first tank securement (144; 444). The tank securing device (140; 440) is configured to be selectively rotated to a first orientation and a second orientation. The first/second orientation of the tank securing device (140; 440) disposes the first/second tank securement (144; 444) to secure a SCBA tank of the first/second diameter relative to the main support (120; 420).