Beverage Brewing Unit Jaw Actuation to Reduce Capsule Blocking Risk
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing beverage brewing units face complexity and risk of blocking, as well as lack of precise control in capsule positioning, leading to potential damage and unbalanced rotational extraction systems causing vibrations and noise.
Innovation Solution
A beverage brewing unit with a capsule enclosing assembly featuring a pair of jaws driven by first and second actuation means, allowing reliable capsule handling and precise positioning through non-telescopically projecting cam portions and resilient biasing members, ensuring stable capsule holding and release positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If telescopic or movable actuation means are used to open and close jaws, then the jaws can be actuated to hold and release capsules, but the device complexity increases and the risk of blocking occurs
Solution Approach 1:
The patent extracts the complex telescopic or movable actuation means from the system and replaces them with fixed cam portions that are statically integrated into the enclosing parts. This eliminates the blocking risk while maintaining jaw actuation capability through the cam-resilient member interaction.
Solution Approach 2:
Instead of using movable actuation means that actively drive the jaws, the invention inverts the approach by using fixed cam portions that passively guide the jaw movement through their geometric profile, combined with resilient members that provide the necessary force.
2Device complexity
If simple jaw mechanisms are used, then the device complexity is reduced, but the precision of capsule positioning and centering deteriorates
Solution Approach 1:
The patent applies local quality by designing cam portions with specific geometric profiles at critical locations where precise capsule positioning is needed. The cam geometry is locally optimized to guide the jaw and capsule to the correct position and orientation during the closing motion.
Solution Approach 2:
The cam portions are designed to perform preliminary positioning actions on the capsule as the enclosing parts approach each other, ensuring the capsule is correctly centered and oriented before the final closing and sealing action occurs.
3Reliability
If fixed cam portions are used instead of telescopic actuation means, then the risk of blocking is reduced, but the ability to dynamically adjust jaw movement is limited
Solution Approach 1:
The cam portions are designed to create periodic sequences of jaw movement: opening phase, holding phase, closing phase, and release phase. This periodic action pattern ensures reliable operation while maintaining dynamic control through the geometric timing built into the cam profiles.
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 reliable capsule insertion, precise centering, and efficient ejection, reducing the risk of blocking and damage, while maintaining a balanced rotational extraction system for smooth operation.
Implementation Method 1
resilient biasing members
Implementation Method 2
non-telescopically projecting cam portions
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a beverage brewing unit (1) particularly for machines for preparing beverages from capsules, comprising: -a casing (8), -a capsule enclosing assembly comprising a first enclosing part (2) connected to the casing and a second enclosing part(3), moveable relative to the first enclosing part in a longitudinal direction, preferably in a translatory movement,between a capsule insertion position in which the two enclosing parts are at distance from each other and a capsule enclosing position in which the capsule is enclosed between the first and second enclosing parts(2,3), -a capsule insertion assembly (32) comprising a pair of jaws (33, 34) arranged for guiding the capsule (4) towards the intermediate insertion position and holding it in said position; -wherein the jaws (33, 34) are moveable between a capsule holding position and a capsule release position; wherein the jaws (33, 34) are driven from the capsule release position to the capsule holding position by first actuation means (47) and from the capsule holding position to the capsule release position by second actuation means (52)and; wherein the first and second actuation means (47, 52) are arranged at longitudinal distance one another along the direction of longitudinal axis (I) for the relative movement of the two enclosing parts (2, 3).