Quick-Release Screw Connection for Fast Threaded Positioning
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Solution Overview
Problem
Existing threaded connections require numerous revolutions to adjust large distances or inclines, which is time-consuming and inefficient, particularly in time-sensitive applications like medical operations.
Innovation Solution
A quick-release screw connection with a threaded bolt and nut part featuring a through-hole angled relative to the internal thread, allowing for rapid translational adjustment and secure re-engagement through a pressure piece and return spring mechanism, ensuring reliable and efficient positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a conventional threaded connection is used for adjustment, then the connection is reliable and secure, but a large number of revolutions are required to cover large distances, increasing time and effort
Solution Approach 1:
The adjustment process is segmented into two distinct phases: a quick translational movement phase using the through-hole mechanism for rapid positioning, and a fine-tuning phase using the threaded connection for precise adjustment. This segmentation allows each mechanism to optimize its function without compromise
Solution Approach 2:
The system dynamically switches between two adjustment modes: translational movement along the angled through-hole for rapid coarse adjustment, and rotational threading for precise fine adjustment. The threaded piece can move freely in translation during quick adjustment, then engage with the thread for precision work
2Productivity
If the threaded piece is tilted for rapid translational adjustment, then large distances are covered quickly, but the thread engagement must be maintained for reliability
Solution Approach 1:
The threaded piece is preliminarily positioned at an angle relative to the longitudinal axis, creating the through-hole at angles between 2° and 45° (preferably 5°-35°, further preferably 10°-25°). This preliminary angular positioning enables the subsequent rapid translational adjustment while maintaining proper thread engagement geometry
Solution Approach 2:
The through-hole is positioned locally with specific angular orientation and diameter (larger than the external diameter of the internal thread but smaller than the external diameter of the threaded piece) to achieve complete thread drilling out on one side while maintaining sufficient material thickness and thread depth on the opposite side
3Ease of operation
If the through-hole diameter is increased to allow rapid movement, then translational adjustment is facilitated, but thread depth and strength may be compromised
Solution Approach 1:
The through-hole diameter is optimized as a critical parameter - larger than the external diameter of the internal thread to enable complete thread drilling out and smooth translational movement, but smaller than the external diameter of the threaded piece to maintain sufficient material thickness. The angular orientation (2°-45°) is also optimized to balance movement ease with thread preservation
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
Enables rapid translational adjustment of threaded connections while maintaining high reliability, reducing the time and effort required for positioning, especially in applications where speed is critical.
Implementation Method 1
The pressure piece can be acted upon by a return spring, which moves the pressure piece into the engagement position
Data Source
AI summary
A quick-release screw connection has a threaded bolt having an external thread and has a nut part having an internal thread. The nut part has a threaded piece in which the internal thread is formed, wherein a through-hole, the diameter of which is larger than the outer diameter of the internal thread and smaller than the outer diameter of the threaded piece, is passed through the threaded piece rotated by an angle relative to a longitudinal axis of the internal thread.