Sliding-Weight Hammer Tool for Pulling Force Without Hand Bruising
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Solution Overview
Problem
Existing pulling hammers cause hand bruising due to direct impact and require two tools for reshaping materials in confined spaces, limiting their flexibility and effectiveness.
Innovation Solution
A tool with a handle element, a rod, and a weight that can be struck at multiple stops, allowing dual functionality as a hammer and pulling hammer, with adjustable spring pretension and ergonomic design to reduce injury risk and enhance usability in tight spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a pulling hammer is used with a weight that hits a stop point, then the force is transmitted effectively to the workpiece, but the hand holding the handle element is bruised due to direct impact
Solution Approach 1:
The tool is segmented into distinct functional zones: the handle element with first stop for hammering function, and the rod with second stop for pulling hammer function. The weight has separate third and fourth stops that engage with different stops on the handle element or rod, allowing the hand to be positioned away from the impact zone while maintaining effective force transmission to the workpiece
Solution Approach 2:
The rod acts as an intermediary element that transmits the impulse force from the weight to the workpiece without requiring the hand to be in the direct path of impact. The rod with its second stop provides a mediated force transmission path, allowing the hand holding the handle element to remain protected while the weight strikes the second stop and transmits force through the rod to the workpiece
2Adaptability or versatility
If two separate tools (hammer and pulling hammer) are used for different functions, then each function can be performed effectively, but the tool complexity and difficulty of operation in confined spaces increases
Solution Approach 1:
The tool is designed as a universal multi-functional device where a single handle element and rod assembly can perform both hammering and pulling hammer functions. The weight with multiple stops (third and fourth stops) can engage with different targets (first stop on handle element or second stop on rod), allowing the same tool to effectively perform both functions that previously required separate tools, thereby reducing tool complexity and improving adaptability in confined spaces
3Force
If the weight strikes the handle element directly, then the impact force is transmitted, but the installation space required increases and access to confined spaces is limited
Solution Approach 1:
The tool transitions from a single-dimensional linear impact path to a multi-dimensional configuration where the weight can strike different stops (first stop on handle element or second stop on rod) at different positions along the rod's length. This dimensional flexibility allows the hand to be positioned optimally while the weight strikes at various points, enabling effective force transmission with reduced overall tool extension length and improved access to confined spaces
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 tool provides a flexible, single-tool solution for both hammering and pulling functions, reducing injury risk and enabling one-handed operation in confined spaces with adjustable impact hardness and extended application possibilities.
Implementation Method 1
a spring (107), which is accommodated inside the weight (105), the pretension of the spring (107) being adjustable
Implementation Method 2
the weight (105) can be struck with its third stop (105a) against the first stop (101a) and alternatively with its fourth stop (105b) against the second stop (103a)
Data Source
AI summary
The present invention relates to a tool (1) comprisinga handle element (101),a rod (103) which is firmly received in the handle element (101) and has a second stop (103a) at its end opposite the handle element (101),a weight (105) slidingly guided on the rod (103), which has a third stop (105a) on its side facing the handle element (101) and a fourth stop (105b) in its interior,wherein the handle element (101) has a first stop (101a) at its end facing the weight (105), so that the weight (105) can be struck with its third stop (105a) against the first stop (101a) and alternatively with its fourth stop (105b) against the second stop (103a).