Guide Tip Impact Tool to Prevent Fastener Extraction Slippage
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Solution Overview
Problem
Existing impact tools risk damaging parts when extracting fasteners due to the free end of the rod slipping, leading to potential damage during hammer blows or percussion.
Innovation Solution
A guide piece with a duct and stops is integrated into the striking tool, allowing translational movement and limiting the rod's movement to prevent slipping, while a compression spring maintains the tool in a rest position and a protective coating enhances adhesion with the part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the free end of the rod is used to strike the fastener directly, then the extraction force is sufficient, but the risk of slipping and damaging the part increases
Solution Approach 1:
The guide piece acts as an intermediary between the rod and the fastener. It provides a protected interface where the rod's free end strikes the guide piece's second end face, which in turn transmits the force to the fastener through the duct. This intermediary structure prevents direct contact between the rod and fastener, eliminating the slipping risk while maintaining extraction force.
Solution Approach 2:
The striking function is segmented into two distinct components: the rod provides the striking force, while the guide piece provides the guided contact interface. This segmentation separates the force application function from the contact function, allowing each component to be optimized for its specific role and preventing the slipping issues associated with direct rod-to-fastener contact.
2Ease of operation
If the rod protrudes significantly from the body, then the fastener can be accessed, but the risk of slipping increases
Solution Approach 1:
The guide piece serves as a mediator that extends the functional interface between the rod and fastener. It allows the rod to maintain a safe retracted position while still providing controlled access to the fastener through the guide piece's duct and end face, thereby maintaining operational ease without compromising reliability.
3Ease of operation
If the guide piece allows free movement, then the tool is easy to operate, but the alignment precision decreases
Solution Approach 1:
The guide piece incorporates a dynamic positioning system with stops that allow the body to move freely between a rest position and an active position, while maintaining precise alignment in each state. The first stop ensures accurate positioning in the rest position, and the second stop ensures accurate positioning in the active position, thus achieving both ease of operation and alignment precision through controlled dynamic movement.
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 guide piece effectively limits damage to the part by ensuring proper alignment and contact, reducing the risk of slipping and skidding, and allowing precise positioning and orientation of the rod for efficient extraction.
Implementation Method 1
the striking tool comprises a compression spring configured to push the body of the striking tool into the rest position
Implementation Method 2
the second end face of the guide comprises a coating which reinforces the adhesion between the guide and the part
Data Source
Figure 1~5B
AI summary
The subject of the invention is a striking tool (22) which comprises: - a body (24), - a rod (26) oriented in a first direction and comprising a free end (30) configured to cooperate with the element to knock (32), - a guide piece (72) which comprises a duct (80) which extends from a first end face (76) to a second end face (78) configured to bear against a part (36), said conduit (80) comprising a first portion (84) which opens at the level of the first end face (76) and which is configured to house the body (24) of the striking tool ( 22) and allow translational movement of said body (24) of the striking tool (22) with respect to the guide piece, - a compression spring (92) configured to push the body (24) into a position rest.