Handheld Jacking Tool With Caulking Mechanism And Three-Leg Stability
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Solution Overview
Problem
There is a need for a lightweight, hand-held toe jack that can be operated with one hand for tasks like lifting, leveling, and tightening in the building industry, as existing solutions are either heavy-duty or not designed for one-handed operation.
Innovation Solution
A hand-held jacking/levelling-tool with a jacking shaft and frame that uses a caulking gun jacking mechanism, featuring two outer legs and a middle leg, with feet attached at a right angle, allowing for efficient jacking action and incorporating features like jagged edges to prevent slipping, and optional support plates for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a traditional toe jack is used for lifting and leveling objects, then the required lifting force and stability are achieved, but the device becomes heavy and requires two-handed operation
Solution Approach 1:
The device is segmented into three separate legs (two outer legs and one middle leg) that can be independently positioned and adjusted. This segmentation allows the device to achieve stable lifting force distribution while maintaining a lightweight structure, as each leg can be optimized for minimal weight while contributing to the overall lifting capability.
Solution Approach 2:
The device incorporates a dynamic jacking mechanism that allows the middle leg to be jackable (adjustable in length) while the outer legs remain fixed. This dynamic adjustment capability enables the device to achieve the required lifting force and stability without requiring heavy-duty fixed components throughout the entire structure.
2Stability of the object's composition
If a heavy-duty toe jack is used to ensure stability during operation, then the stability requirement is met, but the device cannot be operated with one hand
Solution Approach 1:
By segmenting the support structure into three legs with the middle leg positioned between the outer legs, the device achieves stable triangular support geometry. This segmentation allows sufficient stability to be obtained with lighter-weight components that can be manually operated with one hand.
Solution Approach 2:
The stability function is localized to the foot elements and their positioning, rather than requiring the entire device structure to be heavy-duty. The feet are specifically designed with right-angle attachment to the legs, providing localized stability at the contact points while the overall device remains lightweight for one-handed operation.
3Ease of manufacture
If a simple jacking mechanism is used to reduce device complexity, then ease of manufacture is improved, but friction losses increase
Solution Approach 1:
The jacking action is segmented to occur only at the middle leg, separating the complex jacking mechanism from the fixed outer legs. This segmentation allows the use of a simple, easy-to-manufacture jacking mechanism while minimizing friction losses by limiting the moving components to only where necessary for the jacking action.
Data Source
Figure 1a~2c
Figure 3~6
AI summary
The invention describes a hand held jacking/levelling-tool comprising a jacking shaft (2) and a frame (3) moving relative to each other during jacking action. It further comprises a caulking gun jacking mechanism (1) providing the jacking action, two outer legs (5, 7) fastened to one of the frame (3) and the jacking shaft (2) and one middle leg (6) fastened to the other of the frame and the jacking shaft being positioned between a left and right outer leg (5, 7). Furthermore the jacking/levelling tool comprises a foot (8, 9, 10) fastened at a right angle to each leg and pointing in the same directions. The jacking action causes the jacking shaft (2) to move downward through the frame (3).