Quick-Action Screw Connection With Angled Bore Adjustment
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Solution Overview
Problem
Existing threaded connections require a large number of revolutions to adjust long distances or small inclines, which is time-consuming and inefficient, particularly in time-sensitive applications like surgery.
Innovation Solution
A quick-action screw connection with a through-hole angled relative to the internal thread, allowing for quick translational adjustment and secure repositioning by tilting, facilitated by a pressure piece and return spring mechanism, ensuring reliable engagement and disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard threaded connection is used for adjusting long distances, then the connection is secure and reliable, but a large number of revolutions are required which increases time and effort
Solution Approach 1:
The adjustment process is segmented into two distinct phases: a quick adjustment phase using translational movement of the nut part along the threaded bolt, and a fine-tuning phase using rotational movement. This segmentation allows the system to achieve both rapid positioning and precise adjustment, resolving the contradiction between speed and precision.
Solution Approach 2:
The invention introduces a second degree of freedom by allowing the nut part to move not only rotationally (traditional screw mechanism) but also translationally along the threaded bolt. This dimensional addition enables quick covering of long distances through translational movement while maintaining the ability to make fine adjustments through rotational movement, thus resolving the time-loss contradiction.
2Productivity
If the nut is divided into multiple pieces to enable quick adjustment, then rapid positioning is achieved, but the device complexity increases
Solution Approach 1:
The nut part is divided into a threaded piece and a separate pressing element that can move relative to each other. This segmentation enables the threaded piece to be quickly positioned along the threaded bolt while the pressing element maintains engagement. The segmented design achieves rapid adjustment without excessive complexity by using a simple linear guide mechanism for the pressing element.
Solution Approach 2:
The pressing element is designed to be dynamically movable relative to the threaded piece, allowing it to flexibly engage and disengage from the threaded bolt. This dynamic design enables quick adjustment by simply moving the pressing element linearly, achieving high productivity without complex mechanisms.
3Ease of operation
If a through-hole is drilled through the threaded piece for quick adjustment, then rapid translational movement is enabled, but the structural integrity of the threaded piece is reduced
Solution Approach 1:
The through-hole is drilled at an angle (e.g., 45 degrees) relative to the longitudinal axis of the threaded piece rather than perpendicular to it. This angular orientation distributes the structural weakness away from critical load paths, allowing the threaded piece to maintain sufficient strength while enabling smooth translational movement for easy operation.
Solution Approach 2:
The threaded piece has non-uniform structural properties: it is weaker along the path of the angled through-hole (where movement is needed) and stronger in regions bearing the threading and load-bearing areas. This localized variation in quality allows easy operation where needed while maintaining overall structural integrity where required.
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 adjustment of long distances with high reliability, reducing operational time and effort, and maintaining secure positioning through a combination of translational and rotational movements.
Implementation Method 1
The pressure piece can be acted upon by a return spring, which moves the pressure piece into the engaged position
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a quick-action screw connection (1) comprising a threaded bolt (3) having an external thread (2) and a nut part (4) having an internal thread (5). The nut part (4) has a threaded piece (6) in which the internal thread (5) is formed, wherein a through-bore (8) is guided through the threaded piece (6) at an angle (α) relative to a longitudinal axis (7) of the internal thread (5), the diameter of which through-bore is larger than the external diameter of the internal thread (5) and smaller than the external diameter of the threaded piece (6).