Retractable Arm Locking Mechanism to Prevent Item Tearing
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Solution Overview
Problem
Existing item collection receptacles often cause damage or tearing of deposited items due to internal components when the door is reopened before fully closed, leading to items getting caught, stuck, or ripped.
Innovation Solution
A retractable arm mechanism with a pawl system and emergency compression spring is integrated into the receptacle, ensuring the door cannot be reopened until fully closed, preventing damage by locking the retractable arm in place and allowing slight opening for removing hands or objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the door is reopened before fully closed, then the door can be accessed for removing objects, but items deposited in the receptacle get caught, stuck, or torn by internal components
Solution Approach 1:
The retractable arm is positioned in advance to block door reopening before the item can be damaged. The arm extends automatically when the door opens and retracts when the door closes, creating a protective barrier that prevents items from contacting harmful internal components during premature door reopening.
Solution Approach 2:
The retractable arm acts as an intermediary mechanism between the door and the deposited items. It mediates the door's movement by physically blocking reopening until proper closure is achieved, thereby protecting items from damage without preventing legitimate access when the door is fully closed.
2Object-affected harmful factors
If the retractable arm is locked in place, then the door cannot be reopened preventing item damage, but the door cannot be opened for legitimate access
Solution Approach 1:
The retractable arm transitions between dynamic states: extended and locked when the door is open to prevent premature reopening, and retracted when the door is fully closed to allow legitimate access. This dynamic behavior ensures both item protection and proper door functionality.
Solution Approach 2:
The retractable arm applies preliminary counter-action by blocking door reopening before damage can occur. The arm creates a mechanical barrier that prevents the harmful action of premature door reopening, while allowing the intended action of proper door operation.
3Adaptability or versatility
If cutting edges are present in the receptacle for item processing, then item processing is enabled, but items get torn or damaged when the door is partially closed
Solution Approach 1:
The retractable arm is positioned in advance to block door reopening that would cause items to contact cutting edges at improper angles. By preventing premature door movement, the arm ensures items only contact cutting edges when the door is in the correct fully-closed position for safe processing.
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
Prevents damage to items by ensuring the door is fully closed before reopening, securely holding the retractable arm in place and allowing minimal opening for object removal without fully closing the door.
Implementation Method 1
a resilient element disposed within a channel within the inner tube configured to interact with a ridge disposed in a first end of the channel, and wherein the resilient element is moveable between a designated preload and an emergency compressed position
Data Source
AI summary
A retractable arm device, system, and method with a locking mechanism for preventing items placed in a device or receptacle from getting stuck, damaged, or torn. The retractable arm includes an inner tube, a pawl, and an outer tube surrounding the inner tube. The inner tube slides within the outer tube and the pawl preventing the retractable arm from moving into an extended position under particular conditions. The retractable arm may be placed in a receptacle for items to prevent the door from being reopened before the door is fully closed.