Angled-Face Gas Tap Cam for Reduced Knob Push Force
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Solution Overview
Problem
Existing gas taps with pop-out rotary control knobs require excessive force for the initial forward pushing movement, making them difficult to use effectively in gas systems.
Innovation Solution
A cooking device gas tap design featuring a shaft extension and a movement transfer element with angled faces that allow axial movement and rotation, enabling gas passage and ignition without the need for forward pressure, using a combination of a rod and flexible elements to transfer movement efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pop-out rotary control knob is used, then the control element can be positioned externally, but excessive force is required for the forward pushing movement
Solution Approach 1:
A cam mechanism acts as an intermediary between the control knob and the valve stem. The cam converts the rotational motion of the knob into axial movement of the stem, eliminating the need for direct pushing force on the stem while still achieving the required valve actuation.
Solution Approach 2:
The cam surface is designed with curved profiles that conjugate and oppose each other. This curved geometry enables the conversion of rotational motion into axial displacement, allowing the control knob to actuate the valve stem through rotation alone without requiring additional pushing force.
2Ease of operation
If a rotary control knob requires forward pushing movement, then axial movement can be achieved, but the operation becomes complex and requires two motions
Solution Approach 1:
The cam mechanism dynamically converts the single rotational motion of the control knob into the required axial movement of the valve stem. This dynamic transformation allows one motion (rotation) to accomplish what previously required two motions (pushing + rotation), simplifying the user operation.
Solution Approach 2:
The functions of axial positioning and rotational control are merged into a single cam mechanism. The conjugated cam profiles combine the axial displacement function and the rotational actuation function, allowing both movements to be achieved through one rotational action of the control knob.
3Reliability
If additional movement transfer mechanisms are added, then gas passage control can be improved, but the device dimensions and space occupation increase
Solution Approach 1:
The cam mechanism is nested within the existing tap body structure. The cam is positioned inside the housing, utilizing the internal space around the valve stem, so that the movement transfer function is added without increasing the external dimensions of the gas tap.
Solution Approach 2:
The cam mechanism operates in the radial dimension while the valve stem moves in the axial dimension. By using the radial space within the existing cylindrical housing, the design adds functionality without increasing the axial length or external footprint of the gas tap.
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
Facilitates gas passage and ignition by rotating the control element alone, reducing the force required and maintaining similar dimensions without additional space occupation, allowing for easy production and efficient operation.
Implementation Method 1
an extension upper face of the extension and a protrusion lower face of the support protrusion contact in a manner providing advancing of the shaft in the axial direction
Data Source
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AI summary
The present invention is a cooking device (1) having a gas tap (10) comprising a shaft (13) having a shaft extension (131), and a gas guidance element (12) connected to the shaft extension (131), in order to transfer the movement, which is required for gas passage, in an axial direction (D1) and in a rotation direction (R1), characterized in that the gas tap (10) comprises a movement transfer element (17) fixed on the shaft (13) and having an extension (171) which is embodied in an angled manner thereon; and an axially movable rod (18) positioned in a parallel manner with respect to the shaft (13) and having a support protrusion (181) at an angle permitting rotational movement such that the angle of the extension (171) meets the angle of the support protrusion (181) and positioned in a manner corresponding to the extension (171).