Electronic Throttle Reset Mechanism for Accurate Default Return
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Solution Overview
Problem
Existing electronic throttle body reset mechanisms suffer from manufacturing inconsistencies, inaccurate return to default positions, and slow reaction speeds due to the complexity of multiple parts, leading to frictional forces and uncertainty in operation.
Innovation Solution
A simplified reset mechanism for the electronic throttle body using a valve, throttle shaft, reset gear, upper and lower spring seats, and a reset spring, where the reset spring is fixed on both spring seats and the throttle shaft connects through these seats, eliminating the need for a coupling ring and emergency spring, ensuring precise control over the default position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple parts (coupling ring, emergency reset spring, reset spring, limit surfaces) are used in the reset mechanism, then the reset function is achieved, but the manufacturing precision deteriorates due to many matching errors
Solution Approach 1:
The patent removes the coupling ring and emergency reset spring from the system, keeping only the essential reset spring and limit surfaces. This extraction of unnecessary components reduces the number of matching interfaces, thereby improving manufacturing precision while maintaining the reset function.
Solution Approach 2:
The patent merges the functions of the coupling ring and emergency reset spring into the simplified structure of the reset spring directly engaging with the limit surfaces. This consolidation reduces the number of separate parts and their associated matching errors.
2Reliability
If multiple parts (coupling ring, emergency reset spring, reset spring) work together, then the reset mechanism functions, but the frictional force increases affecting reaction speed
Solution Approach 1:
By removing the coupling ring and emergency reset spring, the patent eliminates the additional frictional interfaces between multiple components. This reduces total frictional force and allows the reset mechanism to respond more quickly to position changes.
Solution Approach 2:
The consolidation of multiple spring functions into a single reset spring reduces the number of frictional contacts, thereby improving the reaction speed of the mechanism while maintaining operational reliability.
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 simplified mechanism ensures consistent and rapid return to the default position by reducing frictional forces and eliminating uncertainties in the connection, thereby improving operational reliability and speed.
Implementation Method 1
a reset spring 12, wherein one torsion arm 121 of the reset spring 12 is fixed on the upper spring seat 11 and the other torsion arm 122 of the reset spring 12 is fixed on the lower spring seat 13
Implementation Method 2
The reset spring is a torsion spring with two torsion arms that can rotate and generate torque to return the reset gear to its default position
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A reset mechanism for an electronic throttle body comprises a valve (19), a throttle shaft (20), a reset gear (21), an upper spring seat (11), a lower spring seat (13), and a reset spring (12). A support leg (14) is installed in the reset gear. The upper spring seat, the reset spring, and the lower spring seat are sleeved outside the reset gear. Two ends of the reset spring are fixed to the upper spring seat and the lower spring seat, respectively. The upper spring seat has an upper support leg surface (16) attached to a first side of a valve limiting block and a side of the support leg. The lower spring seat has a lower support leg surface (15) attached to a second side of the valve limiting block and another side of the support leg. The mechanism has a simple structure and a simplified manufacturing process, and can easily and accurately control the default position of the throttle body.