Gas Tap Shaft Assembly With Wear-Resistant Plate Interface
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Solution Overview
Problem
Existing cooking devices with gas taps that use separate rod and shaft mechanisms for controlling gas flow suffer from operational inaccuracies and assembly difficulties due to abrasion issues, which affect the reliability and ease of assembly of these components.
Innovation Solution
A cooking device design featuring a plastic shaft with a metal plate positioned between the shaft and rod, housed within a shaft housing, which enhances abrasion resistance and facilitates assembly by eliminating the need for additional fixing materials, with the plate either fixed via shrink-fit or adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plate is positioned between the shaft and the rod to prevent abrasion, then the abrasion resistance is improved, but the device complexity increases due to additional components
Solution Approach 1:
The patent combines the plate and shaft into a single integrated component where the plate is fixed to the shaft, eliminating the need for separate assembly and reducing the number of parts while maintaining abrasion resistance
Solution Approach 2:
The patent uses composite construction by fixing a metal plate to a plastic shaft, combining the low-friction properties of plastic with the high strength and abrasion resistance of metal to achieve reliable wear protection
2Ease of manufacture
If the shaft is made of plastic material, then the manufacturing cost is reduced, but the abrasion resistance deteriorates
Solution Approach 1:
The patent creates a composite structure by attaching a metal plate to a plastic shaft, combining the cost-effectiveness and low-friction properties of plastic with the superior abrasion resistance of metal
Solution Approach 2:
The patent applies different material properties to different parts of the shaft assembly - using plastic for the main body where cost and friction are concerns, and metal plate at the contact surface where abrasion resistance is critical
3Ease of operation
If the rod and shaft are assembled as separate pieces, then the ease of assembly is improved, but the operational accuracy deteriorates due to abrasion
Solution Approach 1:
The patent merges the plate and shaft into a single unit that is fixed together, eliminating relative movement and abrasion between these components while maintaining the separate piece assembly advantage for the rod-shaft connection
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 maintains operational accuracy and simplifies assembly by reducing abrasion and eliminating the need for extra fixing materials, ensuring reliable and efficient gas flow control through the gas tap mechanism.
Implementation Method 1
the abrasion resistance of the plate is greater than the abrasion resistance of the shaft... in order to prevent the abrasion of the end thereof which is connected to the rod and in order to prevent the deterioration of the axial movements because of abrasion
Data Source
Figure 1~2
AI summary
Invention relates to a cooking device with a gas tap comprising a shaft (30) which is movable along an axial direction, a rod (50) at one first end fixed to the shaft (30) and at the opposite second end secured to a wedge (40) that selectively opens and closes a gas channel (10) at an opposing second end. The shaft (30) comprises a housing (32) at the first end fixed to the shaft (30) wherein the rod (50) at least partially received and a plate (34) is provided between the shaft (30) and the rod (50) whose abrasion resistance is greater than the shaft (30).