Dental Handpiece Fixing Structure for Vibration Stability
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Solution Overview
Problem
The existing fixing structure between the curved casing and the protective cover of dental handpiece transmission mechanisms is unstable and difficult to assemble, often loosening due to operating vibrations.
Innovation Solution
A fixing structure comprising a transmission assembly, a positioning sleeve with a positioning member, and a casing with a push member that securely connects the curved casing to the protective cover, using an elastic sheet or slide groove mechanism to ensure stability and ease of assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the casing is designed as an integral curved rod to facilitate holding and operation, then the ease of operation is improved, but the device complexity increases due to the compact transmission mechanism that is difficult to mount inside the curved rod
Solution Approach 1:
The casing is divided into a curved front casing and a straight rear casing, allowing the transmission mechanism to be mounted in the rear casing while maintaining the curved ergonomic shape of the front casing for easy holding and operation
2Ease of manufacture
If the casing is composed of a curved casing and a straight casing connected together, then the ease of manufacture is improved, but the reliability deteriorates due to fixing stability issues between the curved casing and protective cover under operating vibration
Solution Approach 1:
A positioning sleeve is introduced as an intermediary component between the protective cover and the curved casing. The positioning sleeve includes a positioning member that fits into a positioning hole, providing stable fixation and preventing loosening under operating vibration while maintaining ease of assembly
3Reliability
If a complex fixing structure is used to ensure stability between the curved casing and protective cover, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The positioning sleeve acts as a simple yet effective intermediary component that provides reliable fixation through its positioning member fitting into the positioning hole, avoiding the need for complex fixing structures while ensuring stability under vibration
Solution Approach 2:
The positioning member on the positioning sleeve is designed to automatically align with and fit into the positioning hole on the protective cover, enabling self-positioning and simplifying the fixing process without requiring complex adjustment mechanisms
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
Provides a simpler and more stable assembly process, preventing the curved casing from loosening during operation by securely attaching the front casing, positioning sleeve, and transmission assembly, thus enhancing the overall usability and reliability of the dental handpiece.
Implementation Method 1
The positioning member on the positioning sleeve is in the form of an elastic sheet. One end of the push member leans against the positioning member so that the positioning member is tightly pressed against an outer circumferential surface of the protective cover.
Data Source
AI summary
A fixing structure of a dental handpiece has a transmission assembly for connecting a handpiece head, a positioning sleeve sleeved onto the transmission assembly and having a positioning member thereon, and a casing composed of a front casing and a rear casing. The front casing is sleeved onto the positioning sleeve. The rear casing is detachably connected to one end of the front casing. The front casing is provided with a push member. The push member is inserted inwardly to lean against the positioning member for the positioning member to be tightly pressed against an outer circumferential surface of the transmission assembly so that the front casing, the positioning sleeve and the transmission assembly are fixed and connected together.