Ceiling Media Outlet Spool Mechanism for Low-Cost Classroom Retraction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing media supply systems for classrooms are mechanically complex and costly, posing risks of damage and adverse budgetary implications for schools.
Innovation Solution
A media supply unit with an inextensible support cable and flexible conduit, where the electrical cables and media supply pipes are wound on or unwound from a spool in the ceiling-mounted base unit, allowing the media supply head to be raised or lowered without mechanical complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mechanically complex deployment mechanism is used to lower and raise the media supply head, then the media supply system can be deployed and retracted, but the device complexity increases and the risk of mechanical damage increases
Solution Approach 1:
The patent replaces complex mechanical deployment mechanisms with a simple spool and cable system. The media supply head is suspended by an inextensible cable that winds and unwinds on a spool, eliminating the need for complex mechanical linkages, joints, and actuators found in traditional systems. This substitution dramatically reduces device complexity while maintaining the ability to deploy and retract the media supply head.
Solution Approach 2:
The patent uses a flexible conduit to enclose and protect the cable, electrical wires, and media supply pipes. This flexible conduit allows the bundled elements to bend and flex as the media supply head moves, while protecting them from damage. The flexible conduit replaces rigid mechanical connections, further simplifying the overall system.
2Ease of operation
If a mechanically complex deployment mechanism is used, then the media supply head can be moved relative to the base, but the cost of the system increases
Solution Approach 1:
By replacing complex mechanical deployment mechanisms with a simple spool and cable system, the patent significantly reduces manufacturing costs. The spool and cable components are inexpensive compared to the mechanical linkages, motors, and control systems required by traditional mechanisms. This substitution makes the media supply system more cost-effective for schools.
Solution Approach 2:
The patent employs simple, inexpensive components such as the spool, cable, and flexible conduit that can be easily manufactured and replaced if needed. These components are far cheaper than the complex mechanical mechanisms they replace, reducing both initial system cost and long-term maintenance expenses.
3Adaptability or versatility
If the media supply head is moved frequently relative to the base, then the system is versatile, but the mechanical components are at risk of damage
Solution Approach 1:
The flexible conduit encloses the cable, electrical wires, and media supply pipes, protecting them from damage during frequent deployment and retraction operations. The flexibility of the conduit allows it to bend and flex without breaking, while its protective function shields the internal components from mechanical damage, enhancing system reliability.
Solution Approach 2:
By eliminating complex mechanical linkages and joints in favor of a simple cable suspension system, the patent reduces the number of moving parts that could fail or become damaged. The cable and spool system is inherently more reliable under frequent use, as it has fewer components that can wear out or break.
4Device complexity
If electrical cables and media supply pipes are bundled together, then the system construction is simplified, but the cables and pipes are subject to longitudinal strain
Solution Approach 1:
The flexible conduit encloses the cable, electrical wires, and media supply pipes in a protective sheath. This conduit is designed to be flexible enough to allow the bundled elements to move and bend, yet rigid enough to prevent excessive longitudinal strain on the individual components. The conduit acts as a unified protective structure that simplifies construction while protecting against strain.
Solution Approach 2:
The patent specifies that the cable must be inextensible, meaning it has zero or negligible elastic elongation. This parameter change ensures that the cable does not stretch under the weight of the media supply head or during deployment, preventing longitudinal strain on the enclosed electrical wires and media supply pipes.
Data Source
AI summary
Media supply units are described for the provision of media such as electricity, gas, data or compressed air. The units comprise a base unit (1) adapted to be installed in or on a ceiling structure and a media outlet supply head (2) connected to the base unit by means of a flexible support member fixed at its ends to the supply head and to the hub of a spool in the base unit. One or more electrical cables or pipes are also arranged between the hub of the spool and the supply head (2), and the flexible support member is a non-stretch conduit (30) which can be wound on to or from the spool in order respectively to raise or lower the supply head relative to the base unit. When lowered, the supply head (2) may rest on a school desk or table.