Hairdressing Scissors Segmented Joint for Repairable Assembly
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Solution Overview
Problem
Conventional hairdressing scissors require a long time for manufacturing due to welding processes, making it difficult for hairdressers to maintain or repair them, and they cannot be easily disassembled for sharpening or decoration, leading to unnecessary replacements.
Innovation Solution
A joint structure using engagement concave and protruding pieces with tapered surfaces allows for easy assembly and disassembly of blade and finger ring members, enabling separate maintenance and decoration without compromising stability or design features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If welding is used to join blade member and finger ring member, then joint stability and strength are improved, but manufacturing time increases and ease of repair deteriorates
Solution Approach 1:
The scissors are divided into separable components (blade member and finger ring member) that can be joined and separated independently. The blade member and finger ring member are designed as separate parts that can be assembled through engagement pieces, allowing for modular construction that reduces manufacturing time while maintaining joint strength through proper engagement design.
Solution Approach 2:
The blade member and finger ring member are prepared as separate semi-finished products with pre-formed engagement pieces before assembly. This preliminary preparation allows for parallel processing of components, reducing overall manufacturing time while ensuring proper fit and strength through pre-designed engagement mechanisms.
2Stability of the object's composition
If welding is used to join blade member and finger ring member, then joint stability is improved, but ease of repair deteriorates
Solution Approach 1:
The blade member is designed as a separable component that can be detached from the finger ring member through the engagement piece mechanism. This segmentation allows the blade to be removed and sharpened independently without affecting the handle or requiring specialized welding equipment, significantly improving ease of repair and maintenance.
Solution Approach 2:
The blade member can be extracted from the finger ring member through the engagement piece interface. This extraction capability enables the blade to be removed for sharpening, replacement, or maintenance while leaving the finger ring member intact, eliminating the need for complex disassembly processes required by welded joints.
3Adaptability or versatility
If blade member and finger ring member are made as separate semi-finished products, then adaptability to customer needs is improved, but device complexity increases
Solution Approach 1:
The scissors are segmented into modular components (blade member, finger ring member, engagement pieces) that can be independently manufactured in various configurations. This modularity enables customization by selecting and assembling different component types to meet specific customer requirements while keeping the overall assembly structure simple through standardized engagement interfaces.
Solution Approach 2:
The engagement piece design serves multiple functions: it joins the blade member to the finger ring member, allows for easy separation and reassembly, and provides a standardized interface for various blade and handle configurations. This multi-functionality reduces device complexity by using a single engagement mechanism for multiple purposes while maintaining high adaptability to different customization needs.
Data Source
AI summary
The invention provides a pair of hairdressing scissors having a joint structure for joining a blade body of the hairdressing scissors. The joint structure enables a blade member and a finger ring member constituting the blade body to be easily assembled and separated from each other. The joint structure provides satisfactorily stable, firm and accurate joint performance and excellent design features. A blade member is formed with an engagement concave portion as an open plane in the base portion thereof and a finger ring member is formed with an engagement-protruding piece in the base portion thereof. When they are engaged and brought into close contact with each other, the engagement-protruding piece and the engagement concave portion are positioned and oriented properly as viewed in a width direction thereof. Thus, the blade member and the finger ring member can be stably assembled in a separable manner.