Quick Release Trimmer Head Using Resilient Clips
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Solution Overview
Problem
Conventional trimmer systems require cumbersome processes for attaching and detaching different functional heads, often involving the removal of multiple bolts and washers, which complicates the swapping of attachments.
Innovation Solution
A trimmer system with a mounting base that allows for easy attachment and removal of attachments using a 'quick release' mechanism involving angled connectors and resilient retaining clips, eliminating the need for bolts and washers, and optionally supplemented with additional attachment support for heavier attachments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional bolt and washer fastening is used, then secure attachment is achieved, but attachment and detachment process becomes cumbersome and time-consuming
Solution Approach 1:
The fastening mechanism is segmented into modular components: a mounting base with integrated fastening features, detachable attachments with corresponding engagement elements, and optional supplemental fasteners. This segmentation allows the attachment process to be simplified while maintaining security, as each component has a specific function and can be independently optimized.
Solution Approach 2:
The fastening mechanism transitions from a static bolt-and-washer system to a dynamic quick-release system that can rapidly transition between locked and unlocked states. The resilient retaining clips and engaging lips provide dynamic mechanical advantage, allowing single-handed operation and rapid attachment/detachment without requiring multiple tools or complex procedures.
2Ease of operation
If quick release mechanism is used, then attachment and detachment becomes fast and easy, but secure fastening may be compromised
Solution Approach 1:
The design incorporates resilient retaining clips that flex and absorb mechanical stress during the attachment process, providing a cushioning effect that ensures positive engagement. The engaging lips are designed with appropriate clearance and geometry to accommodate manufacturing tolerances and operational vibrations, preventing accidental disengagement while maintaining secure fastening.
Solution Approach 2:
Multiple fastening functions are merged into a single integrated mechanism: the resilient retaining clips provide both the quick-release capability and the secure locking function simultaneously. The engaging lips on the mounting base work in conjunction with the clips to create a unified fastening system that achieves both ease of operation and reliable attachment without requiring separate components.
3Reliability
If multiple bolts and washers are used, then secure attachment is achieved, but the number of parts increases
Solution Approach 1:
The mounting base integrates multiple fastening functions into a single component structure. The engaging lips, resilient retaining clips, and mounting features are combined in one piece, eliminating the need for separate bolts, washers, and other fastening hardware. This merging reduces the total part count while maintaining attachment security through the coordinated action of the integrated features.
Solution Approach 2:
The mounting base is designed as a universal interface that can accommodate different attachment types through its integrated fastening features. The same mounting base structure provides secure attachment for various attachments without requiring different fastening components, reducing overall system complexity and the number of parts needed across the product line.
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
Enables swift and effortless switching between different trimmer attachments without the need to unscrew bolts, simplifying the process and reducing the burden of attachment/detachment, while maintaining secure fastening.
Implementation Method 1
resilient retaining clips
Data Source
AI summary
A rotary apparatus is provided for attachment to a rotating shaft. The rotary apparatus includes a mounting base and an attachment. The mounting base includes a circular plate, a receptacle centrally located at the circular plate and being configured to receive the rotating shaft, and a mounting base circumferential side wall connected to the circular plate. The circumferential side wall includes a first aperture and a second aperture. The attachment includes an attachment circumferential side wall having a first resilient retaining clip and a second resilient retaining clip. The first resilient retaining clip is configured to releasably lock into the first aperture, and the second resilient retaining clip is configured to releasably lock into the second aperture so as to releasably fasten the attachment to the mounting base.