Impalement Hazard Cap With Plunger Locking Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing impalement hazard protective caps are ineffective due to degradation of static securing means and foreign objects getting caught, leading to reduced protection and easy removal from hazards.
Innovation Solution
A mechanically secured impalement hazard protective cap with a housing featuring a flange and a body with a void, utilizing a plunger that can be moved within the void to securely engage and hold variously sized and shaped impalement hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If static friction fit is used to secure the cap to the impalement hazard, then the cap can be easily installed, but the securing means degrades through repeated use and foreign objects can be caught in the shaft
Solution Approach 1:
The patent transitions from a static friction fit to a dynamic mechanical fastening system using a plunger and cam mechanism. The plunger can be moved axially to engage or disengage the cap from the hazard, providing controlled dynamic action that maintains reliable securing through repeated use while allowing easy installation and removal when needed.
Solution Approach 2:
The cap is divided into functional segments: a shaft receiving portion, a plunger mechanism, and a cam mechanism. This segmentation allows each component to perform its specific function - the shaft receives the hazard, the plunger provides linear motion for engagement, and the cam converts this to rotational locking action, collectively solving the reliability issue while maintaining ease of operation.
2Reliability
If a mechanically secured cap with plunger and cam mechanism is used, then the cap can be securely attached to prevent accidental removal, but the device complexity increases
Solution Approach 1:
The patent combines the plunger and cam mechanisms into an integrated system where the plunger's axial movement directly drives the cam's rotational locking action. This merging of functions reduces the number of separate components and simplifies the overall mechanism while maintaining secure attachment through the cam's mechanical locking feature that prevents accidental removal.
Solution Approach 2:
The cam mechanism is designed to automatically lock into position when the plunger is pushed, creating a self-locking feature that secures the cap without requiring additional fastening steps. The mechanical geometry of the cam and its interaction with the housing automatically provides the locking action, reducing complexity while ensuring reliable attachment security.
3Productivity
If the plunger is spring-loaded to automatically engage the hazard, then the cap can be quickly secured, but the spring mechanism adds complexity and potential failure points
Solution Approach 1:
The spring is pre-loaded during assembly to automatically push the plunger forward when the cap is placed on the hazard. This preliminary action stores energy in the spring that is released to drive the plunger into the engaged position, enabling quick securing without requiring manual actuation while using a simple, reliable spring mechanism with minimal complexity.
Data Source
AI summary
A protective cap to cover impalement hazards, by means of increasing the surface area associated with said hazard may include utilizing a metal plate embedded within a plastic/polymer cap, with a flat top and a receiving shaft housing below, with mechanical means of securing the cap to said hazard with a mechanical plunger. The mechanical plunger is driven from the exterior of the housing by means of a biasing element to selectively engage the impalement hazard and compressively hold the protective cap to the impalement hazard.