Rotating Locking Shaft for Twist-Free Water Filter Cartridge
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Solution Overview
Problem
Existing water filter devices require significant effort and risk damage to gaskets due to the need to twist the cartridge and connection element during installation and removal, leading to unreliable connections.
Innovation Solution
A water treatment device featuring a rotationally mounted locking shaft that secures the connection head, allowing for easy insertion and fixation without twisting the cartridge or connection element, with optional eccentric segments for enhanced engagement and a bypass mechanism to maintain water flow during cartridge replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bayonet closure is used to fix the connection head, then the cartridge is securely joined to the connection element, but the cartridge and connection element must be twisted as a whole requiring great effort and can damage gaskets
Solution Approach 1:
The locking mechanism is segmented into a locking shaft with locking segments that can independently engage with the connection head, separating the twisting action from the overall cartridge assembly. This allows the locking shaft to be turned independently to secure the connection head without requiring the entire cartridge to be twisted.
Solution Approach 2:
The locking shaft acts as an intermediary element between the connection element and the connection head. It provides a rotational locking action that secures the connection head in place without requiring the cartridge itself to be twisted, thereby reducing the effort needed and protecting gaskets from damage.
2Reliability
If the locking shaft extends perpendicular to the lengthwise axis of the cartridge, then the cartridge is held reliably and the locking shaft cannot slip out, but the handle must be placed on top which may require additional space
Solution Approach 1:
The locking shaft is oriented perpendicular to the lengthwise axis of the cartridge, utilizing a different spatial dimension for the locking action. This perpendicular arrangement ensures that the locking shaft cannot slip out along the cartridge length while allowing the handle to be positioned on top for easy operation.
3Reliability
If the locking shaft is turned into the locking position to fix the connection head, then the cartridge cannot drop out, but the connection must be reversed to remove the cartridge
Solution Approach 1:
The locking shaft is designed to be rotatable between a locked position (where it engages the connection head to prevent cartridge dropping) and an unlocked position (where it disengages to allow easy cartridge removal). This dynamic positioning enables both secure fixation during operation and easy maintenance during cartridge replacement.
Data Source
AI summary
A device for the treatment of water, in particular a filter device. The device has a cartridge which has a container for receiving treatment agents for water, particularly for receiving filter agents, and a connection head arranged on the container. In addition, a connection element is provided which has a recess for the connection head. At least one locking shaft is provided with which the connection head can be fixed in the connection element. The locking shaft is rotatably mounted and can be rotated from a locking position to an unlocking position and back again. A cartridge with a recess in the connection head is provided.