Pivoting Tool Holder With Interference Fit for Secure Retention
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Solution Overview
Problem
Existing tool holders with flip-out tool carriers often inadvertently transition between stored and removal positions, causing tool accessories to become dislodged, and fail to securely retain tools until a predetermined load is applied.
Innovation Solution
A tool holder assembly featuring a pivotably disposed holder portion with an interference member that engages a follower to create an interference fit, selectively restraining the holder in the stored position until a predetermined load is applied, preventing accidental transitions between positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a flip-out tool carrier is used for easy tool access, then ease of operation is improved, but the tool carrier may inadvertently transition between stored and removal positions causing tools to become dislodged
Solution Approach 1:
The interference member creates a preliminary restraining force that prevents the tool carrier from inadvertently transitioning between positions. The interference fit between the interference member and follower establishes a barrier that must be actively overcome by applying a predetermined load, thus preventing accidental tool dislodgment while maintaining easy intentional access
2Ease of operation
If the tool carrier is freely pivotable for easy removal, then ease of operation is improved, but the tool carrier may swing from removal position to stored position before user selection
Solution Approach 1:
The interference member预先 exerts a restraining force that prevents the tool carrier from swinging back to the stored position before the user has selected and removed the desired tool. This preliminary anti-action maintains the carrier in the removal position, giving the user adequate time to select and remove the tool without unexpected movement
3Reliability
If an interference fit mechanism is added to prevent inadvertent movement, then tool retention is improved, but device complexity increases
Solution Approach 1:
The interference member is integrated with either the base portion or the holder portion, merging the retention function into the existing structure rather than adding a separate mechanism. This integration minimizes the increase in device complexity while achieving reliable tool retention through the interference fit between the interference member and follower
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 holder assembly effectively prevents inadvertent movement of the tool carrier between stored and removal positions, ensuring secure retention of tool accessories until intended removal, thereby reducing dislodgment and improving user convenience.
Implementation Method 1
The at least one interference member engaging a portion of the other of either the base portion or the holder portion and defining an interference fit therebetween for selectively restraining the holder portion in the stored position until a predetermined load is applied to overcome the interference fit
Data Source
AI summary
A tool holder assembly is provided and includes a base portion and a holder portion. The holder portion is pivotably disposed within the base portion for reciprocating movement between a stored position and a removal position. The tool holder assembly also includes at least one interference member associated with one of either the base portion or the holder portion. The at least one interference member engaging a portion of the other of either the base portion or the holder portion and defining an interference fit therebetween for selectively restraining the holder portion in the stored position until a predetermined load is applied to overcome the interference fit.