Dual Buffer Clutch Structure for Stable Gear Parking Position
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing vehicle speed change device clutch is prone to dislocation during gear shifting, leading to wear and faults, and existing buffering solutions do not adequately address the issue of wear reduction, balanced force, and positional stability, especially when the vehicle is parked on a ramp or flat road.
Innovation Solution
The apparatus incorporates a first and second buffer clutch with a clutching cam guide track, a spring seat, and a compressible spring, along with a protecting ring having a hooking opening to securely position the shift fork during parking, preventing clutch dislocation due to sliding forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-side buffering structure is used to reduce wear and fault, then the wear and fault of shift forks and rotation units are reduced, but the structure cannot adequately prevent clutch disposition when the vehicle is parked on a ramp or flat road due to unbalanced forces
Solution Approach 1:
The buffering structure is divided into two separate buffer clutches (first buffer clutch and second buffer clutch) positioned on opposite sides of the clutching cam guide track. Each buffer clutch independently provides buffering force, creating a segmented approach that enhances stability while maintaining manageable complexity through modular design
Solution Approach 2:
The second buffer clutch acts as a counterbalance to the first buffer clutch, with both springs providing opposing buffering forces that counteract each other. This anti-weight principle ensures that when the vehicle is parked on a ramp or flat road, the balanced forces prevent the clutch from displacing due to gravitational or external forces
2Reliability
If the clutching cam guide track is made longer to accommodate parking position, then the shift fork can be securely positioned, but the space utilization efficiency decreases
Solution Approach 1:
The buffer clutches are designed with compressible springs that provide dynamic buffering force. The springs can compress and expand to accommodate the shift fork's movement into the parking position, allowing secure positioning without requiring excessive track length. The dynamic nature of the spring mechanism adapts to the available space
Solution Approach 2:
The buffering force parameter is adjusted through the spring compression mechanism. When the shift fork engages the parking position, the spring compresses to provide the necessary buffering force to secure the position. This parameter change allows the system to achieve reliable parking positioning within a compact track length
3Reliability
If the buffering force is increased to prevent clutch disposition, then the positional stability is improved, but the action force required increases and wear is not adequately reduced
Solution Approach 1:
The two buffer clutches with opposing springs create balanced buffering forces that counteract each other. This balance allows each spring to operate at optimal force levels rather than requiring one spring to provide excessive force alone, thereby maintaining positional stability without excessive action force
Solution Approach 2:
The buffer clutches are positioned to provide cushioning force before the clutch can displace. The springs are pre-loaded to provide immediate buffering resistance when displacement forces are applied, preventing disposition while operating within optimal force ranges through advance preparation
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 ensures high efficiency in space utilization, maintains a simple and lightweight structure, and enhances safety and practicality while reducing wear and positional issues, offering economic benefits.
Implementation Method 1
a compressible spring (4A)
Data Source
AI summary
An apparatus for avoiding disposition of the clutch of the vehicle speed change device includes a first buffer clutch and a second buffer clutch being located on a clutching cam guide track; the clutching cam guide track being serially arranged with a spring seat and a compressible spring; each of the first buffer clutch and the second buffer clutch including a respective clutching cam set; each of the two clutching cam sets having a respective clutching guide track; the clutching guide track of the first buffer clutch having a parking position for receiving a shift fork; and a protecting ring being installed on the clutching cam set of the first buffer clutch; the protecting ring having a hooking opening capable of receiving the shift fork which shifts to the parking position.