Spring-Loaded Snap-Fit Module Mounting for Tool-Free Assembly
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Solution Overview
Problem
Existing methods for attaching user interface modules to laboratory equipment require high design and manufacturing effort, necessitate multiple tools, and are prone to damage during disassembly, with snap-fit connections requiring precise alignment and complex tooling adjustments.
Innovation Solution
A device comprising a module carrier with snap elements and a locking frame supported by spring elements, allowing for tolerance compensation and tool-free assembly and disassembly, using identical parts across various devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screw connections are used to fix the UI module, then the module can be securely attached, but installation space is sacrificed for tool access and multiple tools must be kept on hand
Solution Approach 1:
The patent replaces the screw-based mechanical fastening system with a snap-fit connection system. The UI module carrier has a rearwardly extending projection that engages with a corresponding recess in the housing wall, eliminating the need for screws and tools while maintaining secure attachment through elastic deformation of the engagement elements
2Strength
If adhesive bonding is used to attach the module, then secure attachment is achieved, but disassembly causes damage and specialized manufacturing expertise is required
Solution Approach 1:
The patent divides the attachment system into separate mechanical components: a UI module carrier with engagement projections and a housing wall with corresponding recesses. This segmentation allows the module to be attached and detached as a complete unit without damaging either the module or the housing, enabling easy repair and replacement
Solution Approach 2:
The patent uses elastic deformation as a temporary state during assembly and disassembly. The engagement elements are designed to elastically deform during insertion and release during removal, providing secure attachment during operation while allowing damage-free disassembly when needed
3Ease of operation
If snap-fit connection is used between module and device, then assembly is simplified, but precise coordination of tolerances and tooling is required resulting in significant development effort
Solution Approach 1:
The patent introduces dynamic elements to the snap-fit connection through spring-loaded engagement mechanisms. The springs allow the engagement elements to adapt to manufacturing tolerances through elastic deformation, maintaining reliable connection without requiring extremely tight tolerances or complex tooling adjustments
4Ease of repair
If the module is designed to be detachable with screw connections, then disassembly is possible, but installation space is sacrificed and tool access is required
Solution Approach 1:
The patent replaces the screw-based mechanical fastening system with a snap-fit connection system. The UI module carrier has a rearwardly extending projection that engages with a corresponding recess in the housing wall, eliminating the need for screws and tools while maintaining secure attachment through elastic deformation of the engagement elements
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
Reduces design and manufacturing effort, enables tool-free assembly and disassembly, and accommodates manufacturing tolerances, while maintaining secure attachment of modules to equipment.
Implementation Method 1
at least one spring element designed and arranged to resiliently support the locking frame on the rear side of the wall next to the mounting opening and/or to resiliently support the support plate on the front side of the wall
Data Source
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AI summary
Device for mechanically fastening a module to a wall of a device with a mounting opening for receiving the module, comprising: • a module carrier having a plate-shaped base body for insertion into the mounting opening and at least one first snap element on the outer circumference of the base body, • a module arranged on the front of the base body and attached to the module carrier, • a support plate for resting on a front side of the wall with the mounting opening, which is connected to the module carrier or module and projects outwards parallel to the main plane of the base body, • a locking frame having a frame opening for inserting a rear part of the base body and at least one second snap element on the inner circumference, • at least one spring element which is formed and arranged,to resiliently support the locking frame on the rear side of the wall next to the mounting opening and/or to resiliently support the support plate on the front side of the wall, • wherein the first snap element and the second snap element are designed to snap together when the base body is inserted into the frame opening, wherein there is a gap between the rear of the support plate and the front of the locking frame to accommodate an edge area of the wall surrounding the mounting opening.