Wide Angle Joint Shock Absorption via Wave Springs
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Solution Overview
Problem
Wide angle joints for vehicles experience intensified wear, vibration, and noise due to shock from reverse inputs, leading to inefficient power transmission.
Innovation Solution
A wide angle joint design featuring yoke shafts with ball end portions, a plate with a large-diameter part and protruding parts with insertion recesses, and coupling yokes with support recesses, incorporating wave springs and dampers made of resilient materials to absorb shocks and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a wide angle joint is used to transmit power at large angles (60-70 degrees), then the power transmission capability is improved, but wear of the plate and coupling yoke is intensified due to shock from reverse inputs
Solution Approach 1:
The patent applies beforehand cushioning by introducing a damper between the plate and coupling yoke to absorb shocks from reverse inputs before they cause wear. The damper is pre-installed in the assembly to cushion against future shock loads, preventing direct impact between metal surfaces that would otherwise lead to intensified wear during operation.
2Device complexity
If the plate and coupling yoke are directly coupled to transmit power, then the structure is simple, but excessive wear causes vibration and noise between the plate and yoke coupling
Solution Approach 1:
The patent applies the intermediary principle by introducing a damper as a mediating element between the plate and coupling yoke. This damper absorbs shock and reduces wear, thereby preventing the vibration and noise that would otherwise be generated by excessive wear between the directly coupled metal surfaces, while adding minimal structural complexity.
3Reliability
If resilient materials are added to absorb shocks, then wear and vibration are reduced, but the device complexity increases
Solution Approach 1:
The patent applies partial action by introducing a damper only at the critical interface where shock absorption is most needed (between the plate and coupling yoke), rather than throughout the entire joint. This targeted approach provides sufficient wear protection and vibration reduction while minimizing the increase in overall device complexity.
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 design minimizes shock, reduces vibration and noise, and decreases wear by effectively absorbing impulsive loads and rotational forces, enhancing power transmission efficiency.
Implementation Method 1
incorporating wave springs and dampers made of resilient materials to absorb shocks and reduce noise
Implementation Method 2
incorporating wave springs and dampers made of resilient materials to absorb shocks and reduce noise
Data Source
AI summary
The present invention provides a wide angle joint including: a pair of yoke shafts mounted on opposite sides thereof to transmit power from the one side to the opposite side, each yoke shaft having a ball end portion provided on a first yoke part to which a spider is coupled; a plate having a large-diameter part formed in the middle thereof and protruding parts protruding from the large-diameter part in the opposite axial directions while being reduced in a radially inward direction, wherein the protruding parts have insertion recesses into which the ball end portions of the yoke shafts are inserted, and the large-diameter part is faulted to have different widths in radial directions from the central portion thereof; and a pair of coupling yokes, each of which has a second yoke part connected with the first yoke part through the spider and a support recess into which the large-diameter part of the plate is inserted.