Door Stop With Cantilever Arm for Tripping Hazard Reduction
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Solution Overview
Problem
Traditional door stops often protrude beyond the door's bottom edge, creating a tripping hazard and failing to minimize floor obstruction effectively.
Innovation Solution
A door stop design featuring a planar base with a flexible cantilever arm forming a first acute angle, an extension element that contacts the door to hold it in place, and optional features like a figurine to hide the stop or a base extension for added stability, ensuring minimal protrusion and secure door positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional door stops are designed as elongated flexible wedges to accommodate different door heights, then adaptability is improved, but floor protrusion increases creating tripping hazards
Solution Approach 1:
The door stop transitions from a traditional elongated wedge shape to a planar base with a vertical cantilever arm, changing the spatial dimension from horizontal extension to vertical positioning. This dimensional shift allows the door stop to accommodate different door heights through vertical adjustment rather than horizontal extension, eliminating floor protrusion while maintaining adaptability.
Solution Approach 2:
The door stop is segmented into distinct functional components: a planar base for floor mounting and a separate cantilever arm for door contact. This segmentation allows the base to remain flush with the floor surface while the cantilever arm provides the necessary door-stopping function, resolving the contradiction between adaptability and floor protrusion.
2Reliability
If door stops extend beyond door bottom edges to provide sufficient contact length, then door holding reliability is improved, but floor obstruction increases
Solution Approach 1:
The contact mechanism moves from horizontal extension beyond the door edge to vertical positioning with the cantilever arm. The arm's length and angle can be adjusted to provide sufficient contact force and reliability without requiring horizontal protrusion, thus eliminating floor obstruction while maintaining door holding reliability.
Solution Approach 2:
The door stop utilizes adjustable parameters including the cantilever arm length, arm angle relative to the base, and base positioning depth. By changing these parameters, the system achieves reliable door contact without fixed horizontal extension, allowing optimization between reliability and floor obstruction based on specific installation requirements.
3Ease of operation
If spring wedge door stops use extended angled sections to allow foot pressure for door release, then ease of operation is improved, but floor protrusion and tripping hazard increase
Solution Approach 1:
The door release mechanism transitions from a horizontal extended angled section to a vertical or near-vertical cantilever arm configuration. Foot pressure can be applied to the upper portion of the cantilever arm to deflect it and release the door, providing ease of operation without creating horizontal floor protrusion that causes tripping hazards.
Solution Approach 2:
The cantilever arm acts as an intermediary element between the floor-mounted base and the door. It provides a lever arm that can be actuated by foot pressure at a convenient height while transmitting the release force to the door contact point, enabling easy door release without floor-level extensions.
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
The design minimizes floor obstruction and reduces the risk of tripping while effectively holding the door in a selected pivotal position, facilitating smooth insertion and removal and providing additional support for stability.
Implementation Method 1
a flexible cantilever arm having a primary end portion and an opposing secondary end portion with a lengthwise axis spanning therebetween, wherein the primary end portion is flexibly affixed to the proximal end portion
Implementation Method 2
the extension element contacts the door to frictionally hold the door in a selected position
Data Source
AI summary
A door stop that includes a planar base having a proximal end portion and an opposing distal end portion with a longitudinal axis spanning therebetween, further included in the door stop is a flexible cantilever arm having a primary end portion and an opposing secondary end portion with a lengthwise axis spanning therebetween, wherein the primary end portion is flexibly affixed to the proximal end portion with the secondary end portion being a free cantilever end, wherein the longitudinal and lengthwise axes form a first acute angle to one another.Also included in the door stop is an extension element extending from the distal end portion in a substantially perpendicular manner toward the cantilever end, wherein operationally the proximal end portion is pushed under a door thereby reducing the first acute angle until the extension element contacts the door to frictionally hold a door in a selected position.