Modular Lifting Assembly for Seated-to-Standing Transitions
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Solution Overview
Problem
Existing lifting devices are inadequate for efficiently and safely lifting users, particularly elderly or physically disabled individuals, from a seated position without requiring manual effort or complex mechanisms.
Innovation Solution
A modular lifting device comprising a cart with removably coupled sections, a lifting unit, and a hydraulic actuator system that allows the third section to be selectively lifted or lowered, enabling users to easily transition between seated and standing positions using a belt and grip mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lifting device is designed to lift users from seated position, then lifting capability is improved, but device complexity increases
Solution Approach 1:
The lifting device is divided into three removable sections that can be coupled together. The first section has a base and vertical member, the second section has a horizontal member, and the third section has the lifting mechanism. This segmentation allows the complex lifting function to be distributed across multiple simple, modular components that can be easily assembled and disassembled.
Solution Approach 2:
A belt is used as an intermediary element to transfer the lifting force from the third section to the user. The belt wraps around the user's waist and connects to the lifting mechanism, allowing the user to be lifted without direct mechanical contact or complex restraint systems.
2Ease of operation
If lifting mechanism is added to cart, then user lifting capability is improved, but cart weight increases
Solution Approach 1:
The lifting mechanism is contained within the removable third section, separating the weight of the lifting system from the base cart structure. Users only need to transport the third section when lifting functionality is needed, reducing the weight burden on the main cart body.
Solution Approach 2:
The lifting capability is localized to the third section rather than being distributed throughout the entire cart. This concentrates the weight increase to a specific functional module that can be independently managed and removed when not in use.
3Ease of operation
If sections are removably coupled, then storage ease is improved, but structural stability deteriorates
Solution Approach 1:
The cart is designed with standardized coupling interfaces between sections that enable quick assembly and disassembly. The first section couples to the second section via complementary joining features, and the third section couples to the second section similarly, allowing easy storage while maintaining stability during use.
Solution Approach 2:
The coupling mechanisms between sections incorporate locking features that prevent accidental separation while allowing intentional disassembly. These locking features provide mechanical counter-forces to maintain structural stability during the lifting operation.
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
Facilitates safe and independent user lifting and lowering, enhancing mobility and accessibility for individuals with mobility impairments by providing a user-friendly and efficient mechanism for seated-to-standing transitions.
Implementation Method 1
A lifting unit is coupled to the cart and the lifting unit is positioned on the second section. The lifting unit selectively urges the third section upwardly with respect to the support surface.
Data Source
AI summary
A lifting assembly includes a cart that includes a first section, a second section and a third section. Each of the first section, the second section and the third section are removably coupled together. The first section may be rolled along a support surface. A lifting unit is coupled to the cart and the lifting unit is positioned on the second section. The lifting unit selectively urges the third section upwardly with respect to the support surface. The third section may be gripped by a user thereby facilitating the third section to lift the user from a seated position.