Adhesive Rotary Switch Assembly for Easier Bonding Rework
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Solution Overview
Problem
Existing switch devices face challenges in intuitive operation near displays, particularly in aligning and adjusting the load during bonding, which can lead to costly defective work due to adhesive residue and shape compatibility issues.
Innovation Solution
A switch device design featuring an adhesive base adhered to a surface member with a removable operation assembly, allowing for easier alignment and load adjustment, and minimizing the cost of defective work by allowing only the adhesive base to be discarded if bonding fails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the operation knob is bonded directly to the surface member, then the bonding process is simple, but it is difficult to align and adjust the load during bonding
Solution Approach 1:
The device is divided into three segments: adhesive base, operation base, and operation knob. The adhesive base is bonded to the surface member first, then the operation base is connected to the adhesive base, and finally the operation knob is attached to the operation base. This segmentation allows each component to be positioned and adjusted independently during the assembly process, solving the alignment and load adjustment difficulties.
2Device complexity
If the operation knob is bonded directly to the surface member, then the structure is simple, but adhesive residue remains on the surface and cannot be removed
Solution Approach 1:
By introducing intermediate components (adhesive base and operation base) between the operation knob and the surface member, the adhesive is contained on the adhesive base rather than directly on the surface member. If bonding fails, only the adhesive base needs to be removed, not the entire assembly, making repair and rework much easier.
3Adaptability or versatility
If the operation knob shape varies, then design flexibility is improved, but it becomes difficult to bond and adjust load
Solution Approach 1:
The segmentation isolates the bonding process to the adhesive base, which has a standardized interface with the surface member. The operation knob can have any shape without affecting the bonding process, as long as it connects to the operation base. This decouples design flexibility from manufacturing difficulty.
Solution Approach 2:
The adhesive base and operation base act as intermediaries that standardize the bonding interface. They mediate between the varied shapes of operation knobs and the fixed requirements of surface bonding, allowing different knob designs to use the same bonding procedure.
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
Facilitates intuitive operation near displays by simplifying the bonding process, reducing the cost of defective work through the ability to replace only the adhesive base, and ensuring reliable adhesion regardless of the operation knob's shape.
Implementation Method 1
an adhesive base adhered to a surface of a surface member
Data Source
AI summary
A switch device includes: an adhesive base adhered to a surface of a surface member; and an operation assembly connected to the adhesive base. The operation assembly includes: an operation base connected to the adhesive base; and an operation knob that is rotatable with respect to the operation base. The operation knob is connected to the adhesive base and is removable from the adhesive base in an axial direction of the operation knob.