Quick-Release Toilet Seat Hinge for Tool-Free Removal

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Solution Overview

Problem

Existing toilet seat hinges are difficult to remove without tools, making it challenging to properly clean the toilet bowl.

Innovation Solution

A toilet seat hinge with a quick release mechanism that includes a pin and a cap member, allowing the hinge post to pivot between a secured and released position from the toilet bowl, facilitating easy removal and installation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the hinge is secured to the toilet bowl with bolts, then the hinge is firmly fixed and stable, but it becomes difficult to remove without tools

Engineering Contradiction:
Improvefirm fixationVSAvoidremoval difficulty
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The hinge assembly is divided into separable components: the hinge post with mounting holes, the toilet bowl with mounting posts, and a quick release mechanism with fingers and cap member. This segmentation allows the hinge to be firmly fixed when assembled while enabling tool-free removal by actuating the quick release mechanism.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The quick release mechanism introduces dynamic elements (movable fingers and pivotable cap member) that allow the hinge to transition between a secured state (fingers engaged with mounting posts) and a released state (fingers disengaged from mounting posts). This dynamic capability resolves the contradiction by providing both firm fixation and easy removal.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If a quick release mechanism is added to facilitate removal, then ease of operation improves, but device complexity increases

Engineering Contradiction:
Improveremoval easeVSAvoidmechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The quick release mechanism is designed to be operated by the user without requiring external tools or assistance. The cap member pivots to automatically actuate the fingers to engage or disengage from the mounting posts, providing self-service functionality that achieves ease of operation without excessive complexity.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The quick release mechanism components (fingers, cap member, pivot axis) are integrated with the hinge post and mounting structure. The cap member combines the functions of a lever and a protective cover, while the fingers serve both as structural elements and as the actual engagement/disengagement components, reducing overall complexity through functional merging.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS9986878B2Toilet seat hinge
Publication Date: 2018.06.05 BEMIS MANUFACTURING CO
  • US9986878B2 patent drawing
  • US9986878B2 patent drawing
  • US9986878B2 patent drawing

AI summary

A toilet seat hinge for mounting a toilet seat to a toilet bowl includes a hinge post and a pin extending through the hinge post and defining an axis. The pin is configured to attach the toilet seat to the hinge post for pivotal movement about the axis. The toilet seat hinge also includes a quick release mechanism for releasably securing the hinge post to the toilet bowl. The quick release mechanism includes a member coupled to the pin for pivotal movement about the axis. The member is pivotable about the axis between a first position in which the hinge post is secured to the toilet bowl, and a second position in which the hinge post is released from the toilet bowl.