Tool Head Coupler With Asymmetric Latch for Secure Attachment
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Solution Overview
Problem
Existing tools face operational, performance, and safety risks due to insecure or incomplete coupling of tool heads with power units, leading to potential mechanical failures and unsafe usage.
Innovation Solution
An attachment apparatus with a coupler, latch, and collar system that provides robust coupling by allowing selective attachment and retention of tool heads, using a groove, notch, and pivotable latch mechanism to ensure secure engagement and prevent unsafe combinations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If tool heads are mixed with various power units, then versatility is improved, but reliability deteriorates due to operational, performance, and safety risks
Solution Approach 1:
The drive shaft features an asymmetric groove configuration that must match a corresponding asymmetric latch structure. This asymmetric design ensures that only compatible tool heads with matching groove-latch geometries can be properly attached, preventing incompatible combinations while maintaining versatility across different tool head types.
Solution Approach 2:
The collar acts as an intermediary component between the drive shaft and latch mechanism. It provides a controlled interface that guides the latch into proper engagement with the groove, ensuring reliable coupling while allowing the system to accommodate various tool heads through standardized intermediate connection geometry.
2Ease of operation
If a simple attachment mechanism is used, then ease of operation is improved, but reliability deteriorates due to insecure coupling
Solution Approach 1:
The attachment mechanism is segmented into distinct functional components: the drive shaft with groove, the latch with notch, and the collar. This segmentation allows each component to perform its specific function reliably while keeping the overall mechanism simple and easy to operate, as each part contributes to the secure coupling without requiring complex integration.
Solution Approach 2:
The latch is designed to be movable between engaged and disengaged positions, allowing easy attachment and detachment of tool heads. The dynamic nature of the latch mechanism provides simple operation while maintaining reliable security when engaged, as the movable latch can quickly transition between states without requiring complex procedures.
3Reliability
If a robust coupling mechanism is implemented, then reliability is improved, but device complexity increases
Solution Approach 1:
The drive shaft, latch, and collar are merged into an integrated attachment apparatus where the latch is positioned within the collar structure. This merging provides robust coupling reliability through coordinated action of the components while reducing overall device complexity by eliminating the need for separate, independently controlled coupling mechanisms.
Data Source
AI summary
A tool assembly and an attachment apparatus are provided, including a drive shaft extending along a longitudinal direction and forming a groove. A latch includes a notch configured to extend into the groove at the drive shaft. A coupler extends along the longitudinal direction and forms a cavity extending along the longitudinal direction. A tool end opening is formed at the first end of the coupler through which the drive shaft extends into the cavity along the longitudinal direction. The coupler forms a latch opening extending along the longitudinal direction and into the cavity. The latch is positioned in the cavity through the latch opening. A collar extends at least partially around the coupler. The collar is articulatable along the longitudinal direction around the latch opening.