Portable Toolbox with Pivoting Legs and Wheels
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Solution Overview
Problem
Conventional toolboxes mounted in truck beds are not portable, making it difficult for craftsmen to move them to and from job sites without wasting time, and are often too heavy for manual handling.
Innovation Solution
A portable toolbox with independently movable and storable legs and wheels, allowing it to transition between a storage position and a mobile position without lifting, featuring cross and support braces for secure movement and spherical rollers for easier maneuvering within the truck bed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the toolbox is permanently mounted in the truck bed, then it can be locked and securely attached to prevent theft, but it cannot be moved to the job site requiring craftsmen to waste time going back and forth
Solution Approach 1:
The toolbox incorporates four independently movable legs with wheels that can be extended or retracted. When the legs are extended, the toolbox becomes mobile and can be rolled to the job site. When retracted and locked, the toolbox is stable and can be securely mounted in the truck bed. This dynamic structure allows the toolbox to adapt between stationary secure mounting and mobile transportation modes.
2Quantity of substance
If the toolbox is made large enough to house a substantial number of tools, then it can securely store many tools, but it becomes too heavy for one or two people to carry or lift
Solution Approach 1:
The movable legs with wheels transform the toolbox from a static heavy object into a dynamic mobile unit. The legs can be independently extended to provide rolling mobility, allowing the heavy toolbox to be moved without lifting by simply rolling it on its wheels across the ground.
Solution Approach 2:
The wheels act as an intermediary between the heavy toolbox and the ground, transferring the weight-bearing function from human carriers to the wheel-ground contact points. This eliminates the need for people to lift or carry the heavy toolbox, as the wheels bear the weight during movement.
3Ease of operation
If the legs are extended beneath the toolbox for mobile position, then the toolbox can be moved manually over the ground, but the legs may interfere with each other during transition from truck bed
Solution Approach 1:
The toolbox has four independently movable legs rather than a single base structure. Each leg can be extended or retracted independently, allowing them to be deployed sequentially or in different configurations during transition. This segmentation prevents interference between legs during the transition from truck bed to mobile position.
Solution Approach 2:
The legs are designed to be independently movable and can be dynamically adjusted during the transition process. They can be extended in a controlled manner to avoid interference with each other, and can be retracted back into the toolbox when not in use, providing flexible adaptation during different operational phases.
Data Source
AI summary
A portable toolbox having a rigid rectangular tool container with an openable top enclosure, a base and a plurality of independently movable legs attached pivotally to the side of the toolbox having wheels and casters that rotate from a storage position to a mobile position so that the toolbox can be manually moved on its wheels and legs from a truck bed to a jobsite. The legs include pivotal cross braces and support braces which are engaged to the toolbox frame in the mobile position. The legs, the cross braces and support braces can all be simply folded up independently for each leg and each leg rotated to a storage position allowing the toolbox to be securely mounted within a truck bed when not in use.