Earplug Dispenser Cam Assembly for Anti-Jam Alignment
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Solution Overview
Problem
Existing earplug dispensers rely on gravity and are inefficient in ensuring consistent dispensing, often leading to jamming or improper alignment of earplugs, which can hinder smooth operation and user convenience.
Innovation Solution
A rotating cam assembly with an upper and lower cam layer, along with a rotating knob, is used to dispense earplugs, featuring angled walls and a lip mechanism to guide earplugs through the system, ensuring proper alignment and preventing jamming by allowing a gap for earplug movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If gravity-based dispensing mechanism is used, then device complexity is reduced, but dispensing reliability deteriorates due to jamming and improper alignment
Solution Approach 1:
The dispensing mechanism is segmented into distinct functional components: an upper cam layer with cavities for earplug reception, a lower cam layer with pushing structures, and a rotating knob. This segmentation allows each component to perform its specific function reliably while maintaining overall system simplicity.
Solution Approach 2:
The mechanism transitions from a static gravity-based system to a dynamic cam-based system where the rotating knob creates rotational motion that actively guides earplugs through the dispensing process, ensuring reliable alignment and delivery.
2Ease of operation
If simple gravity-based mechanism is used, then ease of operation is improved, but productivity deteriorates due to inconsistent dispensing
Solution Approach 1:
The rotating knob creates periodic rotational motion that systematically moves earplugs from the upper cam layer through the lower cam layer to the dispensing opening, ensuring consistent and efficient dispensing with each rotation cycle.
Solution Approach 2:
The cam layers act as intermediary structures between the user's manual rotation and the earplug dispensing process, translating simple rotational input into precise earplug alignment and delivery, thereby improving dispensing efficiency.
3Device complexity
If gravity-based dispensing is used, then device complexity is minimized, but manufacturing precision deteriorates due to alignment issues
Solution Approach 1:
The cam layers incorporate locally optimized features such as precisely shaped cavities in the upper layer and corresponding pushing structures in the lower layer, ensuring that earplugs are correctly positioned and aligned during the dispensing process.
Solution Approach 2:
The system replaces passive gravity-based positioning with an active cam-based mechanical guidance system, where the rotating cam structure provides precise geometric constraints that ensure accurate earplug alignment throughout the dispensing cycle.
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 efficient and consistent dispensing of earplugs, preventing jamming and ensuring proper alignment, thereby enhancing user convenience and operational reliability.
Implementation Method 1
the earplug may fall through the at least one cavity of the upper cam layer to the lower cam layer
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
Embodiments of the disclosure include earplug dispensers that may comprise a rotating cam assembly operable to dispense one or more earplug to a user when a knob is rotated by the user. In some embodiments, the cam assembly may comprise and upper cam layer and a lower cam layer attached via clips to the rotating knob. Upon rotation of the knob, the upper cam layer may cause the earplugs to fall through one or more cavities to the lower cam layer. The lower cam layer may comprise a pushing structure operable to move the earplugs, upon rotation of the knob, within the lower cam layer to fall down through an opening in the dispenser. In some embodiments, the earplugs may fall through an opening in the rotating knob.