Self-Actuating Support Handle Assembly for Safer Machine Ingress
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Solution Overview
Problem
Existing secondary support handles for large machines are uncomfortable, unsafe, and difficult to use during ingress/egress operations, often requiring operators to stretch or bend awkwardly, and do not provide adequate support for both hands, leading to safety issues and difficulty in closing the door after seating.
Innovation Solution
A self-actuating ergonomic secondary support handle assembly that integrates with the door, using geared or torsional mechanisms to provide ergonomic support and self-lock at a convenient angle, allowing smooth ingress/egress and door closure without stretching, and reducing the need for multiple static handles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If short static secondary support handles are provided on the door side of the cabin, then the operator can have some support during ingress/egress, but the operator has to stretch or extend himself to grab these handles which is uncomfortable and dangerous
Solution Approach 1:
The patent applies the dynamics principle by making the secondary support handle movable rather than static. The handle can rotate and adjust its position automatically to meet the operator's hand during ingress/egress operations, eliminating the need for stretching or awkward postures while maintaining safety support.
Solution Approach 2:
The patent implements self-service by enabling the secondary support handle to automatically adjust its position based on door rotation. The handle self-adjusts to provide optimal support without requiring the operator to reach or stretch, making the system adaptive to the operator's needs.
2Reliability
If multiple static secondary support handles are provided on the cabin and door, then support is available during ingress/egress, but the clearance between handrail and adjacent parts is less resulting in safety issues and awkward postures
Solution Approach 1:
The patent resolves this contradiction by making the support handle dynamic and adjustable. Instead of having multiple static handles with limited clearance, a single movable handle rotates to provide adequate support clearance while maintaining availability throughout the ingress/egress sequence.
Solution Approach 2:
The patent applies universality by designing the secondary support handle to serve multiple functions: providing support during different phases of ingress/egress, adjusting its position automatically, and maintaining adequate clearance throughout operation. This single multi-functional handle replaces the need for multiple static handles.
3Reliability
If the operator uses existing secondary static handles during ingress/egress, then some support is provided, but it is difficult for short people to maintain 3-point contact during ingress/egress operation
Solution Approach 1:
The patent addresses adaptability through the dynamic rotation capability of the secondary support handle. As the door opens and closes, the handle rotates to maintain optimal height and position, allowing operators of different heights to maintain proper 3-point contact throughout the ingress/egress sequence.
Solution Approach 2:
The patent implements parameter changes by allowing the secondary support handle to change its angular position and height relative to the door. This dynamic parameter adjustment ensures the handle remains accessible and usable for operators of various heights during different phases of door operation.
4Ease of manufacture
If the operator needs to close the door after getting seated, then the operator must stand up from the seat to reach the door handle, but this is inconvenient and time-consuming
Solution Approach 1:
The patent applies universality by designing the secondary support handle to serve dual functions: providing support during ingress/egress operations and serving as the door handle for closing the door. This eliminates the need for a separate door handle mechanism and allows the operator to close the door while remaining seated.
Solution Approach 2:
The patent implements merging by combining the secondary support handle and the door handle functions into a single integrated component. This unified design allows the operator to use the same handle for both support during entry/exit and for closing the door, reducing time loss and improving convenience.
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
Enhances operator convenience and safety by providing continuous support during ingress/egress, preventing slipping and vibrations, and simplifying door closure, while reducing part count and improving aesthetics.
Implementation Method 1
The telescopic tapered cylinder (105) is configured to rotate over the plate (104) and get locked inside the hole (104H) of the plate at the said angle of rotation (x) of the secondary support handle (101)
Implementation Method 2
a telescopic tapered cylinder (105) connected to one end of the secondary support handle (101) through a pin (101P) and configured to rotate over the plate (104) and get locked inside the hole (104H) of the plate at the said angle of rotation (x) of the secondary support handle (101)
Data Source
Figure 1A
Figure 1B
Figure 2A~2B
AI summary
A self-actuating ergonomic secondary support handle assembly (100) for large machines is disclosed. The secondary support handle assembly (100) comprises a secondary support handle (101), a pair of geared hinges (102) coupled with a pair of geared hinges (102D) of a door (D) of the large machine, a rotary joint (103) attached to cabin (C) of the large machine about which the secondary support handle (101) rotates and a plate (104) attached to the cabin (C).