Rollator Securing Seat With Height-Adjustable Support Surface
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Solution Overview
Problem
Current solutions for securing rollators in public transport, such as buses and trams, are either complex and expensive or difficult for elderly users to operate, often lacking sufficient security and comfort, especially when folding mechanisms are involved.
Innovation Solution
A rollator safety unit with a height-adjustable support element that forms a horizontal surface, allowing users to securely sit and apply external load to secure the rollator, featuring a flexible or rigid design with a spring-loaded mechanism for easy deployment and retraction, and a visible, pivotable arrangement for simplicity and recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a folding seat is used to secure the rollator, then the rollator can be secured in position, but the device becomes complicated to operate and the seat does not offer sufficient security
Solution Approach 1:
The support element is divided into a first support portion and a second support portion that can be independently positioned. The first support portion secures the rollator frame while the second support portion supports the user's weight, separating the security function from the seating function to simplify operation and improve reliability
Solution Approach 2:
The support element acts as an intermediary between the rollator and the vehicle structure. It transfers the user's weight to the vehicle through the first support portion while providing a stable seating surface through the second support portion, eliminating the need for complex folding mechanisms
2Reliability
If a folding seat is used, then the rollator can be secured, but the seat is uncomfortable and sitting is difficult for older passengers due to vehicle movement
Solution Approach 1:
By separating the support functions into two distinct portions, the invention provides a stable, horizontal seating surface that remains level during vehicle movement. The first support portion anchors to the rollator while the second support portion provides a comfortable, stationary seating area for the user
Solution Approach 2:
The support element changes its configuration from a folded state to an extended state where it forms a horizontal surface. This parameter change allows the support element to provide both secure anchoring and comfortable seating, accommodating older passengers who cannot sit on inclined surfaces
3Reliability
If electric motors are used to adjust the braking device, then the rollator wheels can be locked, but the device becomes complex and costly
Solution Approach 1:
The invention replaces complex electric motor-driven braking systems with a simple mechanical support element that uses the user's body weight to secure the rollator. The first support portion mechanically anchors to the rollator frame while the second support portion provides seating, eliminating motors, switches, and electronic controls
Solution Approach 2:
The support element utilizes the user's own body weight as the locking mechanism. When the user sits on the second support portion, their weight automatically secures the rollator through the first support portion, eliminating the need for external power sources or complex actuation systems
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 solution provides a user-friendly, secure, and cost-effective means to stabilize rollators in public transport, allowing users to sit comfortably and securely without needing to exert force, while being easy to use and integrate into existing transport infrastructure.
Implementation Method 1
the support element can be moved into a horizontal use position against a spring force and returned to a vertical starting position by the spring force
Data Source
Figure 1~2
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Figure 5~6
AI summary
A rollator securing unit of a means of transportation has a bearing element (24, 42, 54) which, by bearing on a seat surface (30) of a rollator (3), secures the rollator (3) in its position when an external load is placed on the bearing element (24, 42, 54) from above. The bearing element (24, 42, 54) forms a horizontally extending bearing surface whose height is adjustable. The rollator securing unit according to the invention is easy to operate, provides a secure seat for the passenger, is of a robust design and can also be produced cost-effectively.