Rigid Telescopic Cooling Conduit for Marine Drive Trim
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Solution Overview
Problem
Flexible conduits used in marine drives for cooling systems are prone to damage from repetitive movement and abrasion against the transom bracket and vessel structure, affecting durability and aesthetics.
Innovation Solution
A rigid, telescopically extendable and retractable cooling water conduit system that adjusts length with the marine drive's trim position, featuring swivel joints and a drain mechanism to facilitate automatic drainage during trimming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible conduits are used for cooling water intake and drain, then the conduit can accommodate movement and trimming of the marine drive, but the conduit is prone to damage from repetitive movement and abrasion
Solution Approach 1:
The patent employs a telescopic rigid conduit system that dynamically adjusts its length through telescopic sections with sealing members. This allows the conduit to accommodate the vertical movement and trimming of the marine drive while maintaining rigidity to prevent damage from abrasion and repetitive stress. The telescopic mechanism enables the conduit to extend and retract as needed without compromising structural integrity.
2Reliability
If a rigid conduit is used for cooling water intake and drain, then the conduit durability is improved, but the conduit cannot accommodate movement and trimming of the marine drive
Solution Approach 1:
The rigid conduit is segmented into multiple sections including fixed portions and telescopic portions. The telescopic sections contain sealing members that allow relative movement between segments while maintaining water-tight connections. This segmentation enables the conduit to accommodate marine drive trimming and movement while preserving the durability benefits of rigid construction throughout the system.
3Device complexity
If the conduit length is fixed, then the conduit structure is simple, but the conduit cannot adapt to different trim positions of the marine drive
Solution Approach 1:
The telescopic conduit sections utilize a nested doll principle where one conduit section is inserted within another. The telescopic sections include inner and outer tubes with sealing members that allow one section to slide within another, enabling length adjustment to accommodate different trim positions. This nesting approach provides adaptability while maintaining a relatively compact and integrated structure.
4Ease of operation
If manual drainage is required for cooling water, then the drainage control is precise, but the operation requires manual intervention and time
Solution Approach 1:
The conduit system incorporates automatic drainage functionality where the telescopic mechanism and gravity work together to enable self-draining. When the marine drive is trimmed to certain positions, the conduit configuration naturally allows cooling water to drain automatically without requiring manual intervention. This self-service drainage approach eliminates time loss while maintaining adequate control over the drainage process.
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 provides a durable and adjustable cooling water conduit system that maintains conduit integrity and convenience by preventing damage from movement, while allowing for efficient cooling and easy water drainage without manual intervention.
Implementation Method 1
a rigid cooling water conduit extending from the drive assembly to the transom bracket assembly, the rigid cooling water conduit being configured to convey the cooling water from the drive assembly for cooling at least one component of the marine drive. In non-limiting examples, the rigid cooling water conduit is lengthened upon trimming of the drive assembly up relative to the transom bracket assembly and the rigid cooling water conduit is shortened upon trimming of the drive assembly down relative to the transom bracket assembly.
Implementation Method 2
a cooling water pump configured to pump cooling water from the body of the water for cooling at least one component of the marine drive
Implementation Method 3
the rigid cooling water conduit being configured to convey the cooling water from the drive assembly for cooling at least one component of the marine drive
Implementation Method 4
for cooling at least one component of the marine drive
Data Source
AI summary
A marine drive is configured for propelling a marine vessel in a body of water. The marine drive has a transom bracket assembly configured to mount the marine drive to the marine vessel, a drive assembly coupled to the transom bracket assembly and configured to generate a thrust force in the body of water, the drive assembly being trimmable up and down relative to the transom bracket assembly, a cooling water pump configured to pump cooling water from the body of the water for cooling at least one component of the marine drive, and a rigid cooling water conduit extending from the drive assembly to the transom bracket assembly, the rigid cooling water conduit being configured to convey the cooling water from the drive assembly to the cooling water pump.


