Folding Cart With UV Handle and Telescopic Legs for Vehicle Loading
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Solution Overview
Problem
Seniors and elderly individuals face difficulties in loading shopping cart contents into vehicles due to lack of strength, leading to inconvenience and potential injury, and there is a risk of damage to goods during the loading process.
Innovation Solution
A folding cart with a three-section leg structure for height adjustment and folding/unfolding, equipped with rotating wheels and a handle that includes a UV LED for disinfection, allowing for easy loading into vehicle trunks and preventing movement of the cart body to minimize damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If goods are taken out one by one from the cart, then they can be loaded into the vehicle, but it requires significant physical strength and time
Solution Approach 1:
The cart leg is divided into three sections (upper leg, intermediate leg, lower leg) that can be independently folded and adjusted. This segmentation allows the cart to be collapsed into a compact form that fits entirely into the vehicle trunk, eliminating the need to manually remove goods one by one.
Solution Approach 2:
The cart incorporates rotation structures at the connection points between leg sections, enabling dynamic folding and unfolding operations. The leg can transition between extended and folded states through rotational movement, allowing the entire cart body to be loaded into the vehicle as a single unit.
2Ease of operation
If the cart is made foldable for easy storage, then it can be loaded in the vehicle trunk, but the structure becomes more complex
Solution Approach 1:
The upper leg is inserted into the intermediate leg, and the intermediate leg is inserted into the lower leg when folded, creating a nested configuration. This nesting approach minimizes the overall size when folded while using simple cylindrical geometries that reduce structural complexity compared to rigid articulated mechanisms.
Solution Approach 2:
The cart utilizes the weight of the cart body and goods to automatically maintain the leg sections in their extended position during use, eliminating the need for complex locking mechanisms. The gravitational force naturally keeps the leg sections aligned and stable when unfolded.
3Reliability
If the cart body is restricted in movement after loading, then goods are protected from damage, but the cart becomes harder to maneuver
Solution Approach 1:
The cart features rotation structures at the leg connections that allow the leg sections to rotate and lock into position. When folded and loaded in the vehicle, these rotation mechanisms enable the leg to be securely positioned against the vehicle walls, restricting cart body movement and protecting goods during transport.
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 easy loading of goods into vehicles by seniors and elderly individuals, reduces the risk of injury, and ensures the hygiene management of the cart contents through UV disinfection, while preventing breakage or damage to goods during loading.
Implementation Method 1
a leg pin supported by a spring is installed on the upper end of the upper leg to be movable forward or backward
Implementation Method 2
the handle has a function of disinfecting the goods in the cart body
Data Source
AI summary
The present invention relates to a folding cart for loading in a vehicle, including a cart body configured to load the goods, the leg capable of the height adjustment and the folding and unfolding operations by the rotation, and the handle with sterilizing and disinfecting functions of the goods in the cart body. The cart body may be loaded with the goods (luggage) in the luggage room or the trunk of the vehicle by the user's simple operation, thereby further facilitating the loading work of the purchased goods in the vehicle, and the movement of the cart body loaded in the vehicle may be controlled, thereby preventing breakage or damage to the goods. Further, UV LED may be provided on the handle in the state where the cart body is loaded in the vehicle to sterilize and disinfect the goods in the cart body.