Twist-Activated Gear-Driven Actuator for Self-Heating Containers
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Solution Overview
Problem
Self-heating beverage containers face challenges in activation mechanisms, as external triggers like knobs or buttons can make them unsightly and inconvenient, potentially preventing them from fitting into standard drink holders, and existing solutions lack a simple, cost-efficient, and sleek activation method.
Innovation Solution
A self-heating container assembly with a housing that allows activation by twisting the upper portion relative to the base, utilizing a 90-degree gear drive arrangement and a cutting assembly to rupture reactant containers, eliminating the need for external triggers and ensuring a sleek design that fits standard drink holders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If external trigger mechanisms (knobs, buttons) are added to activate self-heating, then activation functionality is achieved, but the container becomes unsightly and cannot fit into standard drink holders
Solution Approach 1:
The activation mechanism is merged with the container structure itself. The threading features are integrated into the mating surfaces of the container sections, eliminating the need for separate external triggers. The actuator components are housed within the container body, maintaining a sleek external appearance that fits standard drink holders.
Solution Approach 2:
The actuator mechanism is nested within the container structure. The cutting element and reactant container are positioned inside the container body, with the activation threading integrated into the mating sections. This nested arrangement keeps all functional components contained within the container's external dimensions.
2Reliability
If complex activation mechanisms are used to achieve reliable heating activation, then activation reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The container performs its own activation through the twisting motion of the user. The threading mechanism automatically drives the actuator to rotate the cutting element and pierce the reactant container, eliminating the need for separate motors, sensors, or control systems. This self-service approach achieves reliable activation with minimal mechanical complexity.
Solution Approach 2:
The patent replaces complex mechanical activation systems (motors, switches, electronic controls) with a simple mechanical threading mechanism. The rotational motion generated by twisting the container sections together is directly transmitted through gears to rotate the cutting element, providing a cost-efficient and reliable activation method.
3Productivity
If a 90-degree gear drive arrangement is used to convert twisting motion to cutting motion, then activation efficiency is improved, but internal space requirements increase
Solution Approach 1:
The 90-degree gear drive changes the direction of motion from axial (twisting) to radial (cutting) by utilizing a different spatial dimension. The ring gear and pinion gear arrangement converts the rotational torque from twisting into perpendicular rotational motion of the cutting element, efficiently utilizing the three-dimensional space within the container structure.
Solution Approach 2:
The activation mechanism is segmented into distinct functional components: the threading features for input motion, the ring gear and pinion gear for motion conversion, and the cutting element for the piercing action. This segmentation allows each component to be optimized for its specific function while fitting within the available internal space.
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 twist-to-activate mechanism provides a simple, cost-efficient, and aesthetically pleasing way to initiate heating, ensuring the container fits standard drink holders and maintains a sleek appearance without protruding triggers, while efficiently activating the heating process.
Implementation Method 1
A 90-degree gear drive arrangement is utilized, in which there are teeth molded onto the end of one of the vertical rotating parts, which drives a gear mounted on a horizontal shaft that supports the cutting assembly
Data Source
AI summary
A self-heating container assembly has a housing with a first portion and a second portion, each having a cylindrical cross-section. The first portion and the second portion are mated together in a manner that permits the first portion to rotate about a common axis relative to the second portion. A ring gear (or partial ring gear) is on or attached to the first portion and rotates with the first portion of the housing relative to the second portion. A rotatable cutting element is supported by a support connected to the second portion of the housing. There is a pinion gear on the rotatable cutting element. The pinion gear is coupled to the ring gear. A reactant container containing a reactant is adjacent to the rotatable cutting element, such that rotation thereof cuts into the reactant container.