Snap-Fit Drive Module Assembly to Reduce Labor and Fastener Use
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Solution Overview
Problem
Existing drive module assemblies for aerosol dispensers are labor-intensive to manufacture and assemble, as they are typically assembled piece-by-piece and require screws or bolts for attachment, limiting design flexibility and manufacturing efficiency.
Innovation Solution
A drive module assembly featuring a snap-in motor, motor cap, printed circuit board assembly, and gear train that can be assembled as a single unit without screws, allowing for easy integration into a dispenser housing through snap-fit engagement mechanisms, enabling easier manufacturing and design variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drive module assemblies are assembled piece-by-piece directly into the dispenser housing using screws or bolts, then the components are securely attached, but the manufacturing process becomes labor-intensive and time-consuming
Solution Approach 1:
The drive module assembly is segmented into a modular unit that can be pre-assembled separately and then inserted as a complete module into the dispenser housing. This segmentation allows the drive module to be manufactured independently with optimized processes, then quickly installed as a single unit, dramatically improving productivity while maintaining secure attachment through the modular interface
Solution Approach 2:
Multiple components of the drive module (motor, gear train, control electronics) are merged into a single integrated assembly that functions as one unit. This merging eliminates the need to handle and attach each component separately, reducing assembly steps and labor requirements while maintaining the functional integrity and secure attachment of all sub-components
2Adaptability or versatility
If drive module components are separately inserted into the housing, then assembly flexibility is maintained, but the manufacturing process requires more labor and time
Solution Approach 1:
The drive module components are preliminarily assembled into a complete modular unit before insertion into the dispenser housing. This preliminary assembly of the drive module subsystem allows for optimized manufacturing processes on the module itself, while the final insertion into the housing is a single quick step, significantly reducing total assembly time while maintaining design flexibility
3Strength
If traditional fasteners (screws, bolts) are used to attach drive module components, then strong mechanical attachment is achieved, but design changes require redesigning the fastening system
Solution Approach 1:
The modular drive module interface is designed with universal connection features that can accommodate different motor types, gear train configurations, and control electronics while maintaining the same attachment mechanism. This universality allows design changes within the drive module without requiring changes to the fastening system, improving adaptability while maintaining strong mechanical attachment through standardized interfaces
Data Source
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AI summary
An assembly including a drive motor (104) and a gear plate (102). The gear plate includes a seat (184) for retaining the drive motor. The assembly also includes a motor cap (106) having at least one pawl (216) for snap-fitting into the seat. The assembly further includes at least one axle (198), which is adapted to receive a gear (244).