Screw Tightening Tool With Switching Mechanism
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Solution Overview
Problem
Existing screw tightening tools require frequent hand release and regripping, leading to a risk of disengagement from the screw head during multiple rotations, complicating the tightening or loosening process.
Innovation Solution
A screw tightening tool with a case body and tool member that includes a guide portion and an engaging bit portion, allowing the tool member to switch between three positions: a housed position, a first protruding position, and a second protruding position, ensuring secure engagement and easy regripping without disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user releases and regrips the case body during screw tightening or loosening, then the user can rotate the screw multiple times, but the screw tightening tool may become disengaged from the head portion of the screw
Solution Approach 1:
The tool member is divided into distinct functional segments: the bit portion for engagement, the switching portion for position control, and the protruding sections for accessibility. This segmentation allows the engagement function to be isolated and maintained independently during user operations.
Solution Approach 2:
The guide portion acts as an intermediary structure that receives and guides the screw head portion, ensuring proper alignment and maintaining engagement stability even when the user releases and regrips the tool during operation.
2Ease of operation
If the tool member protrudes from the case body for engagement, then the user can easily engage with the screw, but the tool member may disengage during rotation
Solution Approach 1:
The bit portion is nested within the case body when not in use, and can be protruded when needed. This nested structure protects the engagement portion while maintaining ready access, and the switching mechanism allows controlled protrusion to engage with the screw head.
Solution Approach 2:
The guide portion is pre-configured to receive and guide the screw head into the correct position before engagement occurs. This preliminary guiding action ensures proper alignment, making engagement easier and more reliable.
3Volume of moving object
If the tool member is housed in the case body, then the tool is compact, but the user cannot easily engage with the screw
Solution Approach 1:
The tool member transitions between static housed positions and dynamic protruding positions based on operational needs. The switching portion enables the tool member to move between these states, providing compact storage when not in use and easy engagement when needed.
Solution Approach 2:
The tool member can be positioned in multiple spatial configurations: housed within the case body, protruding in a first direction for one type of access, or protruding in a second direction for another type of access. This multi-dimensional positioning capability allows the tool to maintain compactness while providing easy engagement from various angles.
Data Source
AI summary
A screw tightening tool includes a case body, a tool member, and a switching portion. The case body includes a guide portion configured such that a head portion of a screw is inserted therein. The tool member includes an engaging portion including a bit portion configured to engage with the head portion. The switching portion supports the tool member. The switching portion is configured to switch a position of the tool member among a first position, a second position, and a third position. The first position is a position in which the bit portion protrudes to an outside from the case body. The second position is a position in which the bit portion protrudes to the outside from the case body and that is different from the first position. The third position is a position in which the case body houses the bit portion.