Rolled Sheet Dispenser Carrier Locking for Tamper-Resistant Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Sheet material dispensers, such as those for paper products, are vulnerable to tampering and vandalism, leading to increased costs and damage, as users often attempt to access or steal supplies, resulting in inefficiencies and damage to the dispensers.
Innovation Solution
A sheet material dispensing assembly with a dispenser housing and movable carriers that shift between dispensing positions, featuring a pivoting assembly with extensible and retractable pins and guidance features to manage the dispensing of multiple supplies, ensuring secure and sequential access to sheet materials while preventing unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple supplies of sheet material are stored in the dispenser, then the productivity and continuity of service are improved, but the device complexity and vulnerability to tampering increase
Solution Approach 1:
The dispenser is divided into multiple independent compartments, each housing a separate supply of sheet material. Each compartment has its own carrier that can be independently positioned, allowing the system to manage multiple supplies without increasing overall structural complexity. The segmentation allows each component to remain simple while the system as a whole provides continuous supply.
Solution Approach 2:
The carriers are designed to be movable between different dispensing positions rather than being fixed. This dynamic positioning allows the system to sequentially access different supplies as they are depleted, maintaining productivity while using a relatively simple mechanical structure that relies on movement rather than complex mechanisms.
2Ease of operation
If all supplies of sheet material are accessible through the discharge opening, then the ease of operation is improved, but the reliability and resistance to tampering deteriorate
Solution Approach 1:
Different compartments are positioned at different locations relative to the discharge opening. The first compartment is positioned for easy access when supplies are abundant, while subsequent compartments are positioned to require carrier movement. This creates local variations in accessibility that balance ease of operation with tampering resistance - users can easily access the current supply but would need to manipulate the mechanism to access backup supplies.
Solution Approach 2:
The movable carrier acts as an intermediary between the user and the multiple supplies. Rather than providing direct access to all supplies, the carrier mediates access by positioning the appropriate supply at the discharge opening. This intermediary mechanism maintains ease of operation for legitimate users while preventing unauthorized access to backup supplies.
3Ease of operation
If the dispenser allows free access to all supplies, then the ease of operation is improved, but the loss of substance due to theft and vandalism increases
Solution Approach 1:
The system is configured so that backup supplies are pre-positioned in compartments but are not initially accessible. The carrier mechanism is designed to automatically or manually position the appropriate supply at the discharge opening before dispensing begins. This preliminary positioning ensures that only the intended supply is accessible, preventing theft of backup supplies while maintaining ease of operation for the current supply.
Solution Approach 2:
The carrier mechanism serves as an intermediary control system that regulates access to different supplies. It allows easy access to the active supply while requiring deliberate action to access backup supplies, thereby preventing unauthorized removal or vandalism of unused materials. The intermediary mechanism balances accessibility with protection of resources.
Data Source
AI summary
In one aspect, the present disclosure is directed to a dispenser assembly for dispensing supplies of sheet material. The dispensing assembly can include a carrier supporting the supplies of sheet material and being moveable along a track between various dispensing positions. The dispenser assembly also can include a carrier pivoting assembly with a lever that engages one of the supplies of sheet material and rotates during dispensing thereof, as well as one or more biased pins connected to the lever and configured to engage locking features provided along the track to support the carrier in one of the dispensing positions. The biased pins further can be configured to retract with rotation of the lever such that they disengage the locking features so the carrier to moves along the track to different dispensing position. Other aspects also are described.