Impact Tool Radial Bit Sleeve Nesting
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Solution Overview
Problem
Existing impact tools face challenges in maintaining operability while minimizing size increase, which affects their efficiency and usability in tight spaces.
Innovation Solution
The impact tool design incorporates a motor, a spindle, a hammer, an anvil, a locking member, and a bit sleeve that are strategically positioned and movable to restrict or permit radial movement, allowing for a compact structure without compromising functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the bit sleeve is positioned between the hammer and anvil in radial direction, then the tool size is reduced, but the structural complexity increases
Solution Approach 1:
The bit sleeve is nested within the hammer assembly, positioned between the hammer and anvil in the radial direction. This nesting arrangement allows the bit sleeve to occupy space already defined by other components, reducing the overall tool volume without requiring additional external space.
Solution Approach 2:
The bit sleeve is arranged in the radial dimension rather than extending axially. By utilizing the radial space between the hammer and anvil, the design reduces axial length and overall tool size while maintaining all necessary functional clearances.
2Ease of operation
If the locking member is made movable to locking and unlocking positions, then the operability is improved, but the device complexity increases
Solution Approach 1:
The locking member is designed to be movable between a locking position and an unlocking position, allowing dynamic adjustment during operation. This movability enables the user to lock or unlock the bit sleeve as needed, significantly improving ease of operation and bit changes.
Solution Approach 2:
The locking member serves multiple functions: it locks the bit sleeve in position during operation, allows quick release for bit changes, and works配合 the bit sleeve to provide secure bit retention. This multi-functionality reduces the need for separate mechanisms.
Data Source
AI summary
To reduce size increase, an impact tool includes a motor, a spindle located frontward from the motor and rotatable by the motor, a hammer supported by the spindle, an anvil strikable by the hammer in a rotation direction and having an insertion hole extending rearward from a front end of the anvil, a locking member supported by the anvil and movable to a locking position for locking a tip tool placed in the insertion hole and to an unlocking position for unlocking the tip tool, and a bit sleeve surrounding the anvil. The bit sleeve is movable to a movement-restricting position for restricting radially outward movement of the locking member and to a movement-permitting position for permitting radially outward movement of the locking member. The bit sleeve is at least partly between the hammer and the anvil in a radial direction.