Brew Head Handle Cam Mechanism for Click-Lock Closure
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Solution Overview
Problem
Conventional beverage preparation machines have brew heads that are difficult to close, lack compactness, and do not have clear defined initial and end points, and are not self-arrestive.
Innovation Solution
A brew head with a handle pivotally mounted on a lid featuring a spring/cam/follower mechanism, allowing for easy closure and providing a compact design with a 'clicking' feedback mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional brew head design is used, then the structure is simple, but the brew head is difficult to close and lacks compactness
Solution Approach 1:
The brew head is divided into separate functional components: a lid assembly and a handle assembly that can move independently. The handle is pivotally mounted on the lid, allowing separate manipulation of the closing action from the locking action, making it easier to operate while maintaining structural simplicity
Solution Approach 2:
The handle is designed to be movable rather than fixed, pivoting on the lid to transition between open and closed positions. This dynamic element allows the user to easily open and close the brew head while the spring/cam/follower mechanism provides the necessary mechanical advantage and self-arresting function
2Volume of moving object
If a conventional brew head design is used, then the structure is simple, but the brew head lacks compactness
Solution Approach 1:
The spring/cam/follower mechanism is nested within the handle assembly, with the follower engaging the cam surface and the spring providing biasing force in a compact arrangement. This nested configuration allows the self-arresting mechanism to be integrated into the existing structure without significantly increasing the overall volume of the brew head
Solution Approach 2:
The cam surface is positioned on the handle in a location that allows the follower to engage it during the pivoting motion, utilizing the dimensional space created by the handle's rotation. This allows the mechanism to achieve compactness by using the motion dimension rather than requiring additional linear space
3Loss of information
If a conventional brew head design is used, then the structure is simple, but there are no clear defined initial and end points
Solution Approach 1:
The spring/cam/follower mechanism provides tactile feedback to the user through the handle. As the follower engages the cam surface during closing, it creates a distinct clicking feeling that clearly indicates when the brew head has reached the closed position. This feedback mechanism uses the existing mechanical components to provide position information without requiring additional sensors or indicators
Solution Approach 2:
The cam surface is designed to create a clicking sensation through controlled mechanical interaction with the follower. This tactile feedback, potentially accompanied by audible clicking, provides clear definition of the closed position through mechanical means, eliminating ambiguity about the brew head's state
4Reliability
If a conventional brew head design is used, then the structure is simple, but the brew head is not self-arrestive
Solution Approach 1:
The spring/cam/follower mechanism is designed to automatically arrest the handle in the closed position without requiring user intervention. The spring provides continuous biasing force that drives the follower along the cam surface, and the geometry of the cam creates a natural stopping point where the handle self-arrests in the closed position, ensuring reliable operation
Solution Approach 2:
The spring is pre-loaded to provide biasing force before the handle is moved, and the cam surface is pre-configured with specific geometry to guide the follower through the closing motion and automatically arrest at the closed position. This preliminary configuration of mechanical elements ensures self-arresting behavior without requiring additional control mechanisms
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 enables an easy-to-close and compact brew head with a clear indication of the closing action, enhancing user experience and machine efficiency.
Implementation Method 1
a spring mounted to the lid with a follower that engages the cam surface
Implementation Method 2
a handle rotatably mounted to the lid and including a cam surface
Data Source
AI summary
A brew head for a beverage brewer includes a lid, a handle rotatably mounted to the lid and including a cam surface, and a spring mounted to the lid with a follower that engages the cam surface such that movement of the handle from an open position to a closed position relative to the lid, or vice-versa, by a user causes the user to experience a clicking feeling.