Throttle Valve Spring Pressing Structure for Coil Posture Correction
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Solution Overview
Problem
Conventional throttle valve devices face challenges in accurately correcting the posture of torsion coil springs due to the difficulty in applying pressing forces at the optimal angle, leading to wear and increased friction, which affects the device's performance and efficiency.
Innovation Solution
The throttle valve device incorporates a pressing portion that applies a pressing force toward the center of the coil portion in the axial direction, allowing for easy correction of the coil posture regardless of the helical angle, reducing the need for precise alignment and minimizing wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressing portion is added to apply pressing force to the coil portion, then the posture correction capability is improved, but the device complexity increases
Solution Approach 1:
The pressing portion is integrated into the existing valve body structure, merging the posture correction function with the housing rather than adding a separate independent component. This reduces device complexity while maintaining the ability to apply pressing force to the coil portion for posture correction.
Solution Approach 2:
The pressing portion serves multiple functions: it corrects the coil posture, reduces friction, and maintains reliable operation. By making this single structure perform multiple functions, the patent avoids adding complexity while improving reliability.
2Reliability
If pressing force is applied toward the center of the coil portion in the axial direction, then friction and wear are reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The pressing force is applied in the axial direction (one dimension) rather than requiring precise angular alignment in multiple dimensions. This dimensional simplification reduces manufacturing precision requirements while still achieving the goal of reducing friction and wear through proper posture correction.
Solution Approach 2:
Instead of trying to achieve precise angular alignment of the pressing force, the patent inverts the approach by applying force axially toward the center, which simplifies the alignment requirement while maintaining effectiveness in correcting coil posture and reducing friction.
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
This solution enables effective posture correction of the coil portion, reducing friction and wear, and improving the device's operational efficiency by allowing the pressing force to be applied with less accuracy, thus enhancing the valve's performance and reducing the required driving torque.
Implementation Method 1
a torsion coil spring having a coil portion between a first hook portion and a second hook portion
Data Source
AI summary
When a rotating body is oriented at a default position due to the absence of a driving force, a first hook portion and a second hook portion are engaged with a fixed engagement portion and/or a movable engagement portion. When the rotating body is rotated from the default position by the driving force, the first hook portion is engaged with one of the fixed engagement portion and the movable engagement portion, and the second hook portion is engaged with the other of the fixed engagement portion and the movable engagement portion. A throttle valve device includes a pressing portion that presses the first hook portion and/or the second hook portion to apply a pressing force toward a center of a coil portion in a coil axial direction.