Dual-Impact Slide Hammer Structure for Safer Pulling in Tight Spaces
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Solution Overview
Problem
Existing pull hammers pose risks of hand injury and require two tools for shaping materials in limited spaces, as they lack a dual impact function and adjustable force transmission.
Innovation Solution
A dual impact tool with a handle, rod, and weight system featuring concealed stops for reduced injury risk, adjustable impact hardness, and a receiving device for versatile applications, allowing one-handed operation and use in confined spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional pull hammer is used, then the pulling function is provided, but the risk of hand injury occurs when the weight falls on the handle element or base
Solution Approach 1:
The tool is segmented into distinct functional zones: the handle element with concealed first stop for hammer function, the rod with second stop for pulling function, and the weight with third and fourth stops. This segmentation allows the weight to strike different stops for different functions, eliminating the hazard zone where hand injury previously occurred.
Solution Approach 2:
The concealed first stop inside the handle element acts as an intermediary that receives the impact from the third stop of the weight, preventing direct contact between the weight and the user's hand. The rod serves as an intermediary transmission element that directs force from the weight to the workpiece without exposing the hand to injury.
2Adaptability or versatility
If two separate tools (hammer and pull hammer) are used for material forming in confined spaces, then both functions are available, but the tool complexity and space requirements increase
Solution Approach 1:
The tool is designed as a universal multi-functional device where a single tool body can perform both hammering and pulling operations. The handle element with concealed first stop enables hammer function, while the rod with second stop enables pulling function, eliminating the need for two separate tools and simplifying the device complexity.
Solution Approach 2:
The tool employs dynamic functionality where the weight can be positioned to strike different stops depending on the required operation. The system transitions between hammer mode (weight strikes third stop against concealed first stop) and pulling mode (weight strikes fourth stop against second stop), providing adaptability without increasing physical complexity.
3Force
If the first stop is exposed on the handle element, then the hammer function is achieved, but the risk of hand crushing increases
Solution Approach 1:
The first stop is extracted from the external surface of the handle element and relocated to a concealed position inside the handle element. This extraction removes the hazardous exposed surface that could crush the hand, while the impact force transmission function is maintained through the concealed positioning and structural design of the handle element.
Solution Approach 2:
The concealed first stop is positioned within the handle element structure, creating a cushioning effect where the handle material absorbs and distributes the impact force. This beforehand cushioning prevents the concentrated force from directly crushing the hand, as the force is distributed through the handle element's structure before reaching the user.
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 reduces hand injury risk, enables one-handed operation, and provides adjustable force for versatile applications in tight spaces, combining hammer and pull hammer functions with enhanced safety and efficiency.
Implementation Method 1
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
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AI summary
Tool (1) comprising: - a handle element (101), - a rod (103) firmly received in the handle element (101), which has a second stop (103a) at its end opposite the handle element (101), - a weight (105) slidably guided on the rod (103), which has a third stop (105a) on its side facing the handle element (101) and a fourth stop (105b) inside it, 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) on the first stop (101a) and alternatively with its fourth stop (105b) on the second stop (103a).