Adhesive-Bonded Glass Door Handle for Impact Detachment
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Solution Overview
Problem
Existing glass door handles compromise the integrity of the glass pane during installation and use, risking cracks or shattering, and are not aesthetically pleasing or easily replaceable.
Innovation Solution
A handle assembly with a transparent base part bonded to the glass pane using an adhesive, featuring a mounting connection with protrusions and recesses that allows the handle to detach upon impact, maintaining the glass pane's integrity and providing an aesthetically pleasing design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a handle is mounted through a through-hole or recess in the glass pane, then the handle can be securely attached, but the integrity and strength of the glass pane is reduced
Solution Approach 1:
The handle assembly is divided into separate components: a base part that bonds to the glass surface without penetrating it, and a handle part that attaches to the base part. This segmentation allows the glass pane to remain intact while still providing secure handle attachment through the modular connection between base part and handle part.
Solution Approach 2:
The base part acts as an intermediary element between the glass pane and the handle part. It bonds to the outer glass surface and provides mounting connections for the handle part, eliminating the need for through-holes or recesses in the glass pane while still enabling secure handle attachment.
2Strength
If a handle is securely bonded to the glass pane, then the handle attachment is strong, but the handle cannot be easily replaced if damaged
Solution Approach 1:
The handle assembly is segmented into a base part that remains bonded to the glass pane and a separate handle part that can be detached and replaced. The mounting connection between these parts allows the handle part to be easily swapped while the base part stays securely attached to the glass surface.
Solution Approach 2:
The mounting connection between the base part and handle part is designed to be dynamically adjustable - securely holding the handle part during normal use, but allowing for easy detachment and replacement when needed. This dynamic characteristic enables both strong attachment during operation and ease of repair when required.
3Strength
If the handle assembly uses a strong mounting connection, then the handle is securely attached, but the handle part cannot detach upon impact to protect the glass pane
Solution Approach 1:
Different parts of the mounting connection have different strength characteristics. The bond between the base part and glass surface is designed to be stronger than the mounting connection between the base part and handle part. This local quality difference ensures that during impact, the handle part detaches to protect the glass pane, while the base part remains securely bonded.
Solution Approach 2:
The mounting connection is designed with predetermined failure characteristics that allow the handle part to detach upon impact. This prior design of the connection's failure mode cushions the glass pane from impact forces by allowing the handle part to sacrifice itself, protecting the more critical glass pane and base part.
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 solution ensures the glass pane's strength is maintained without drill holes, provides impact protection, and allows for easy handle replacement, while offering an aesthetically pleasing and functional design for refrigerating units.
Implementation Method 1
a transparent base part bonded at an adhesion surface to an outer glass surface of the glass pane
Data Source
AI summary
A glass door for a refrigerating unit and to such refrigerating unit, wherein the glass door includes a glass pane, a handle assembly including a transparent base part bonded at an adhesion surface to an outer glass surface of the glass pane, and a handle part made in a transparent material, preferably Polymethylmethacrylat (PMMA). The handle assembly further includes a mounting connection for mounting the handle part to the base part, wherein the mounting connection is provided by the one or more protrusions of the handle part and by one or more recess(es) in the base part or one or more recess(es) provided between the base part and the outer glass surface.