Driving Tool Cylinder Sealability via Extraction
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Solution Overview
Problem
The existing driving tools experience leakage of compressible gas and an increase in size due to the disposition positions of the striking and driving parts.
Innovation Solution
A driving tool design that includes a pressure accumulator with a cylinder and piston configuration, where the connection of the driving part and wire material is outside the sliding region of the piston, and the entire wire material and driving part are positioned between the shock absorbing member and the tip of the ejection part, minimizing the size increase and improving sealability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the wire material and driving part are positioned inside the pressure accumulator, then the overall size of the driving tool can be reduced, but the sealability of the pressure accumulator deteriorates due to leakage paths
Solution Approach 1:
The wire material and driving part are extracted from the interior of the pressure accumulator and repositioned to the exterior. Specifically, the wire material is arranged to extend from the striking part outward through the housing, and the driving part is disposed outside the pressure accumulator, eliminating the need for sealed penetration points within the accumulator while maintaining functional connectivity.
Solution Approach 2:
The housing serves as an intermediary structure that accommodates the wire material and driving part in a manner that does not compromise the pressure accumulator's sealability. The housing provides a pathway for the wire material to extend from the striking part to the driving part without creating leakage paths through the pressure accumulator walls.
2Device complexity
If the connection place of the driving part and wire material is inside the sliding region of the piston, then the structure can be more compact, but the sealability deteriorates and gas leakage occurs
Solution Approach 1:
The connection place of the driving part and wire material is extracted from the sliding region of the piston and repositioned to a location outside the pressure accumulator. The wire material extends through the housing to connect the striking part to the driving part, eliminating the need for sealed connections within the piston sliding region and preventing gas leakage.
3Ease of manufacture
If the bellows and pressure accumulator are disposed between the ejection part and winding body, then the layout can be optimized for compactness, but the size of the driving tool increases
Solution Approach 1:
The wire material is arranged to extend in a direction that utilizes the radial dimension of the housing, extending from the striking part outward through the housing to the driving part. This dimensional arrangement allows the wire material and driving part to be positioned outside the pressure accumulator without increasing the overall axial length of the driving tool, effectively utilizing available space in three-dimensional space.
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 design enhances the sealability of the pressure accumulator and minimizes the overall size of the driving tool, while maintaining efficient operation by optimizing the placement of components.
Implementation Method 1
a striking part operated in a first direction to strike the fastener with a pressure of the compressible gas
Implementation Method 2
a piston that is formed in the striking part and slid with respect to an inner circumferential surface of the cylinder when the striking part is operated in the centerline direction
Implementation Method 3
a driving part that operates the striking part in a second direction opposite to the first direction and increase the pressure in the pressure accumulator by pulling the wire material
Data Source
AI summary
The disclosure provides a driving tool. The driving tool includes an ejection part, a pressure accumulator, a striking part, a driving part, and a housing. The driving tool includes a cylinder forming at least a part of the pressure accumulator, and a piston formed in the striking part. The driving part and a wire material are entirely disposed outside, in the radial direction of the cylinder, a region in which the piston is arranged, and outside a region in which the piston slides in an operating direction of the striking part with respect to the cylinder.