Applicator Device Automatic Retraction Mechanism
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Solution Overview
Problem
Users often inadvertently allow products in applicator devices to extend beyond the housing when not in use, requiring manual retraction which can lead to misuse or damage.
Innovation Solution
An applicator device with a retraction mechanism that automatically moves the product carriage into a retracted position after a predetermined time, featuring a retarding mechanism to prevent accidental extension and an actuator for user-driven extension and retraction, along with a closure to secure the product within the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a user-drivable actuator is provided for retracting the product, then the product can be retracted manually, but users may inadvertently allow the product to extend beyond the housing when not in use
Solution Approach 1:
The applicator device automatically retracts the product into the housing after a predetermined period of time without requiring user intervention. The control system monitors the extended state and autonomously activates the actuator to return the product carriage to the retracted position, eliminating the need for users to manually retract the product and preventing inadvertent extension.
2Reliability
If automatic retraction is implemented, then the product is retracted automatically reducing misuse risk, but the device complexity increases
Solution Approach 1:
The control system is pre-configured with a predetermined time period and automatically initiates the retraction sequence after this period elapses while the product remains in the extended state. This preliminary programming allows the system to autonomously manage the retraction timing without requiring complex real-time decision-making or user input.
Solution Approach 2:
The patent replaces purely mechanical manual retraction with an automated system that uses a control system and actuator mechanism. The actuator can be driven automatically by the control system or manually by the user, providing a hybrid approach that reduces complexity compared to fully automated systems while still achieving reliable product position control.
3Adaptability or versatility
If the product carriage is made movable for extension and retraction, then the applicator is versatile, but the risk of accidental extension and damage increases
Solution Approach 1:
The control system monitors the position of the product carriage and the state of the applicator device to determine when automatic retraction should be initiated. This feedback mechanism ensures that the product is only retracted when appropriate, preventing accidental extension and damage while maintaining the versatility of the movable product carriage design.
Solution Approach 2:
The system proactively prevents potential misuse by automatically retracting the product into the housing after a predetermined period in the extended state. This preliminary protective action occurs before any potential damage can occur from leaving the product extended, counteracting the inherent risk of having a movable product carriage.
Data Source
AI summary
An applicator device for a product, said applicator device comprising a housing, a product carriage, for supporting the product, that is mobile within the housing between an extended state and a retracted position, and a retraction mechanism configured to move the product carriage into the retracted position after a predetermined period of time in the extended state. A glue stick comprising said applicator device and an adhesive product.