Rotary Module Coupling for Fast Tool Detachment
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Solution Overview
Problem
Existing tool devices require a time-consuming process to detach modules from each other, as they rely on threads and counter-threads which are inefficient for quick or simple detachment.
Innovation Solution
A tool device design featuring a first module with a receptacle and a second module with an insertion part that can be rotated between locked and enabled positions, utilizing projections and ramps to facilitate easy detachment, along with a locking mechanism that allows or prevents detachment based on position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If modules are connected using threads and counter-threads, then the connection is secure and reliable, but the detachment process becomes time-consuming and complex
Solution Approach 1:
The connection mechanism is segmented into discrete engagement elements (projections on the insertion part interacting with corresponding features on the receptacle). These segmented elements allow for rapid sequential engagement and disengagement, eliminating the continuous threading motion required by traditional threaded connections while maintaining secure attachment during use.
2Reliability
If modules are connected using threads and counter-threads, then the connection is secure, but the operation becomes complex and not simple
Solution Approach 1:
Instead of requiring a screwing motion to engage and unscrewing to detach, the mechanism is inverted so that a pushing motion engages the projections into the receptacle and a pulling motion automatically disengages them. This inversion transforms a complex rotational operation into simple linear motions, making detachment as easy as the primary connection action.
3Ease of manufacture
If projections are designed with uniform characteristics, then manufacturing is simple, but force distribution during engagement may be uneven
Solution Approach 1:
The projections are designed with locally varied characteristics, including different radial heights and slope angles at different positions along the insertion path. This local quality variation ensures that forces are distributed evenly across multiple projection pairs during engagement, with taller projections engaging first to bear initial loads and shorter ones engaging later to share the load, preventing stress concentration.
Data Source
AI summary
A tool device comprises a first module and a second module that can be detached from the first module, the first module having a receptacle and the second module having an insertion part that can be inserted in the receptacle along an insertion axis. The insertion part can be rotated in the receptacle about the insertion axis between a locked position and an enabled position, the receptacle having a first projection and the insertion part having a second projection. In the locked position, the second projection engages behind the first projection in the direction of the insertion axis, and in the enabled position, the first projection enables the second projection to pass in the direction of the insertion axis, the receptacle preventing an activation of the tool device in an initial position and allowing activation of the tool device in a pressed-on position.