Pivoting Piercing Hanger for Secure Fastener-Free Mounting
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Solution Overview
Problem
Existing hanging devices require a separate fastener for attachment to a mounting surface, which can be lost, cumbersome to position, and prone to slippage, and may become misplaced.
Innovation Solution
A device with a base and pivotally attached bracket featuring a piercing arm that rotates from a retracted position to insert into the mounting surface, eliminating the need for a separate fastener and enhancing retention with an arcuate shape and adhesive pad for secure positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate fastener is used to attach the hanging device to the mounting surface, then the device can be securely attached, but the fastener can be lost, misplaced, or become cumbersome to position
Solution Approach 1:
The patent combines the fastening function directly into the base structure by integrating a piercing arm that rotates from a retracted position to pierce the mounting surface. This eliminates the need for a separate fastener component, making the base self-contained and self-installing while maintaining secure attachment.
Solution Approach 2:
The base performs its own installation function through the rotatable piercing arm mechanism. The user simply attaches the bracket to the base, and the piercing arm automatically transitions from retracted to extended position to secure the base to the mounting surface without requiring separate fasteners or complex positioning steps.
2Reliability
If a separate fastener is used, then attachment is possible, but the fastener is prone to slippage and may become misplaced
Solution Approach 1:
The fastening function is merged into the base structure itself through the integrated piercing arm. This reduces the total number of components by eliminating separate fasteners while improving reliability through the direct integration of the attachment mechanism into the base.
Solution Approach 2:
The piercing arm transitions from a static component to a dynamic element that rotates between retracted and extended positions. This dynamic movement allows the arm to engage the mounting surface securely while being protected from displacement during handling, as it remains retracted until installation.
3Strength
If the piercing arm has an arcuate shape, then retention strength against loads is enhanced, but the bracket rotation mechanism becomes more complex
Solution Approach 1:
The piercing arm is designed with an arcuate shape that provides mechanical advantage when rotating into the mounting surface. The curved geometry distributes loads more effectively and enhances retention strength while the rotation mechanism remains relatively simple, utilizing the natural arc of rotation to drive the arm into the surface.
Data Source
AI summary
A device to hang articles includes a base defining a generally flat body to engage a mounting surface and a hook protruding therefrom to hang an article. The device also includes a bracket pivotally attached to the base at a proximal end of the bracket and a piercing arm extending from a distal end of the bracket. Also, the bracket is adapted to pivot between a first position relative to the base where the piercing arm is retracted from the mounting surface, and a second position relative to the base where the piercing arm is inserted into the mounting surface to retain the device thereto.