Rotating Snap-Fit Fastener for Tool-Free Detachable Assembly
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Solution Overview
Problem
Existing detachable snap-fit fasteners are inconvenient, costly, and require tools for assembly/disassembly, occupying large space and reducing operational efficiency.
Innovation Solution
A detachable movable snap-fit fastener comprising a housing, snap-fit assembly, and a rotating member that controls engagement and disengagement, allowing for tool-free assembly and disassembly through rotational movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a snap-lock mechanism or threaded fastening mechanism is used, then the connection strength is improved, but the device complexity and ease of operation deteriorate due to requiring tools and multiple steps for assembly/disassembly
Solution Approach 1:
The snap-fit piece is designed to be movable relative to the housing, transitioning between a retracted position (inside the housing) and an extended position (outside the housing). This dynamic structure allows the fastener to be engaged or disengaged by simply moving the snap-fit piece linearly, eliminating the need for rotational operations or tools, thus improving ease of operation while maintaining connection strength
Solution Approach 2:
The fastening system is segmented into distinct components: the housing, the movable snap-fit piece, and the elastic component. This segmentation allows each part to perform its specific function independently - the snap-fit piece provides the connection interface, the elastic component provides the locking force, and the housing provides structural support, simplifying the overall assembly/disassembly operation
2Ease of manufacture
If traditional snap-fit fasteners are used, then the manufacturing cost is reduced, but the space occupation increases due to the need for snap-lock mechanisms and threaded fastening mechanisms
Solution Approach 1:
The invention extracts and eliminates unnecessary components from traditional fastening mechanisms. By removing the snap-lock mechanism and threaded fastening elements, the design retains only the essential snap-fit piece and elastic component, significantly reducing the overall volume and space occupation while maintaining fastening functionality and keeping manufacturing costs low
Solution Approach 2:
The snap-fit piece is designed to be nested within the housing when in the retracted position, with only a portion extending outside when needed. This nesting arrangement minimizes the space occupation of the fastener system, allowing it to fit compactly within the housing structure while still providing external engagement capability
3Reliability
If snap-lock mechanisms are used, then the connection reliability is improved, but the operating efficiency deteriorates due to requiring tools and multiple steps
Solution Approach 1:
The elastic component automatically provides the locking force when the snap-fit piece is in the extended position, and the snap-fit piece can be easily retracted to disengage from the external component. This self-service mechanism ensures reliable connection without requiring external tools or complex operational steps, thereby improving operating efficiency while maintaining connection reliability
Solution Approach 2:
The movable snap-fit piece design enables dynamic transition between engaged and disengaged states through simple linear movement. This dynamic structure allows rapid assembly and disassembly operations, improving productivity and operating efficiency while the elastic component ensures reliable connection during the engaged state
Data Source
AI summary
A detachable moving snap-fit fastener, comprising: a housing (1); a snap-fit fastener assembly (2), which is arranged in the housing and is at least partially arranged outside the housing to be snap-fitted with the outside; and a rotating member, which is movably connected to the housing and at least partially extends to the snap-fit fastener assembly, wherein the rotating member rotates to drive at least part of the snap-fit fastener assembly to extend out of or retract into the housing.