Orthodontic Bracket Sliding Cover Mechanism
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Solution Overview
Problem
Existing orthodontic self-locking brackets are complex, costly, and difficult to manufacture, with high operational complexity due to the need for direct force application through ligature rubber rings or steel wires, which can hinder normal arch wire movement and affect orthodontic tooth movement.
Innovation Solution
A simplified orthodontic self-locking bracket design featuring a bracket body with an arch wire slot and a sliding bracket cover that uses a pin shaft and elastic elements for clamping, allowing for easy opening and closing, reducing manufacturing complexity and operational difficulty.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional ligature rubber rings or steel wires are used to directly ligature the arch wire into the bracket, then the arch wire can be secured, but the structure becomes complex, manufacturing cost increases, and operational difficulty increases
Solution Approach 1:
The patent extracts the ligature function from the bracket body itself and separates it into an independent sliding cover component. The bracket body retains only the arch wire slot, while the sliding cover performs the locking function through its interaction with the pin shaft and elastic element, thereby simplifying the overall bracket structure while maintaining securing reliability
Solution Approach 2:
The elastic element automatically engages with the pin shaft when the sliding cover is positioned, creating a self-locking mechanism that secures the arch wire without requiring additional ligature materials or complex operational steps. The system serves itself by using the inherent elasticity to provide both the locking force and the release mechanism
2Reliability
If direct force is applied onto the arch wire through ligature, then the arch wire is secured, but normal arch wire movement is baffled and orthodontic effect is influenced
Solution Approach 1:
The sliding cover acts as an intermediary between the arch wire and the bracket body. Instead of directly ligaturing the arch wire with rubber rings or steel wires that apply concentrated force, the sliding cover provides a distributed retaining force through its interaction with the pin shaft, allowing the arch wire to move freely along the slot while maintaining retention
Solution Approach 2:
Instead of using elastic ligature materials to apply force onto the arch wire, the patent inverts the approach by using the arch wire's own position within the slot and the sliding cover's mechanical interaction with the pin shaft to achieve retention. The force application is reversed from direct ligature pressure to a mechanical interlocking system that permits movement
3Reliability
If existing self-locking brackets are designed with complex mechanisms, then locking function is achieved, but manufacturing difficulty increases and cost increases
Solution Approach 1:
The bracket is segmented into distinct functional components: the bracket body with arch wire slot, the sliding cover, the pin shaft, and the elastic element. Each component can be manufactured separately using standard dental laboratory techniques, and then assembled through simple insertion and engagement, significantly reducing manufacturing difficulty and cost compared to monolithic complex self-locking designs
Solution Approach 2:
The patent uses a dynamic sliding cover that moves along the bracket body to achieve the locking and unlocking functions. This dynamic mechanism replaces complex static interlocking structures with a simple sliding motion guided by the pin shaft and elastic element, making the self-locking function easier to manufacture while maintaining reliability
4Reliability
If complex self-locking mechanisms are used, then locking capability is provided, but operational complexity increases and ease of use decreases
Solution Approach 1:
The complex locking mechanism is extracted from the bracket body and embodied in the separate sliding cover component. The operator simply needs to slide the cover along the bracket body to engage or disengage the pin shaft with the elastic element, reducing the operational steps to a simple sliding motion while maintaining reliable locking capability
Solution Approach 2:
The elastic element and pin shaft automatically engage when the sliding cover is positioned, providing self-locking without requiring the operator to perform additional manipulation. The system uses the inherent elasticity to both lock and unlock the mechanism through simple sliding motion, greatly enhancing ease of operation
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 design enhances manufacturing ease, reduces operational complexity, and improves the orthodontic bracket's functionality by allowing smooth sliding and secure locking mechanisms, making it more affordable and efficient for clinical use.
Implementation Method 1
the bracket cover is provided with an elastic element which is deformable after being stressed
Data Source
AI summary
An orthodontic self-locking bracket includes a bracket body having an arch wire bracket slot and a bracket cover matched with the bracket body. Two sides of the arch wire bracket slot are provided with work wings. A bracket opening is arranged at the intersection of the arch wire bracket slot on the bracket body, and the bracket cover is inserted into the bracket opening and is in sliding fit with the bracket body. Left side of the arch wire bracket slot is provided with a pin shaft penetrating through the bracket opening, and the pin shaft is in clamping fit with the lower part of the bracket cover, so that the arch wire bracket slot can be closed and opened by the bracket cover. The bracket is locked and unlocked only by sliding rather than overturning the bracket cover. Complex operation for ligaturing a steel wire is eliminated.