Dental Coupling Member with Different-Torque Screw
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Solution Overview
Problem
Existing dental coupling systems face challenges in maintaining the relative positions of dental appliances attached to the upper and lower jaws, as screws tend to loosen over time, and in limiting excessive insertion of components within tubular structures, which complicates the design and stability of dental mouthpieces and orthodontic appliances.
Innovation Solution
The introduction of dental coupling members with different-torque parts, featuring distinct outer diameters or pitches, which enhance frictional forces to prevent loosening and utilize simple structures to limit excessive insertion, ensuring stable coupling and easy adjustment of dental appliances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard screwing structure is used to couple dental appliances, then the structure is simple and easy to manufacture, but the screws tend to loosen over time causing loss of position stability
Solution Approach 1:
The patent applies different-torque parts with distinct friction characteristics at specific locations on the screwing part. This creates localized variations in torque requirements during screwing, enhancing frictional forces at critical interfaces to prevent loosening while maintaining overall structural simplicity
Solution Approach 2:
The patent modifies the torque parameter by introducing different-torque parts with distinct outer diameters or thread pitches. These parameter changes create varying frictional forces along the screwing path, preventing uniform loosening and improving position stability without requiring complex additional components
2Manufacturing precision
If a tubular structure with uniform inner diameter is used, then the structure is simple to manufacture, but it cannot effectively limit excessive insertion of internal components
Solution Approach 1:
The patent introduces different-diameter parts within the tubular structure at specific locations. These local variations in diameter create physical stops that limit insertion depth of internal components. The uniform sections maintain ease of manufacture while the localized non-uniform sections provide precise insertion control
Solution Approach 2:
The tubular structure is segmented into sections with different diameters. This segmentation creates distinct zones: some sections allow free insertion while others provide mechanical limits. The segmented approach enables precise insertion depth control without requiring complex overall structure modification
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 solution effectively restrains screw loosening and limits excessive insertion, maintaining the stability and alignment of dental appliances, thereby ensuring effective orthodontic correction and easy maintenance of dental appliances.
Implementation Method 1
a different-torque part that involves a different torque for screwing with another of the screwing part and the screwed part
Implementation Method 2
featuring distinct outer diameters or pitches, which enhance frictional forces to prevent loosening
Data Source
AI summary
A dental coupling member related to a first aspect of the invention comprises: a rod having, at one end region, a first coupling part that is coupled to a first attachment part of a first dental tool, and having a screw part at the other end region; and a cylindrical body having, in an inner circumferential surface of one end region, a screwed part into which the screw part is screwed, and having, at the other end region, a second coupling part that is coupled to a second attachment part of a second dental tool. This dental coupling member comprises a different-torque part at the screw part and/or the screwed part, the different-torque part having a different torque for screwing against the other of the screw part and the screwed part. This dental coupling member suppresses the occurrence of loosening between the screw part and the screwed part.