Connecting Rod Assembly Elastic Connection Noise Reduction
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Solution Overview
Problem
Conventional connecting rod assemblies suffer from loose connections between the connecting element and pivot element, leading to impact noise and complex assembly processes due to the use of fixing pins, which complicates the structure and increases assembly difficulties.
Innovation Solution
A connecting rod assembly featuring a connecting element with a polygonal column driving portion, a pivot element with a polygonal connecting pillar and driving groove, a spring for elastic push, and an engaging element, allowing for a simple and secure connection through screwing and elastic forces, reducing noise and assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixing pin is used to connect the connecting element and pivot element, then the connection stability is improved, but the device complexity and assembly difficulty increase
Solution Approach 1:
The patent removes the fixing pin from the connection structure between the connecting element and pivot element. Instead of using a separate fixing pin, the invention uses the elastic deformation of the connecting element itself to achieve secure connection, thereby simplifying the structure while maintaining connection stability.
Solution Approach 2:
The patent introduces an elastic connecting element as an intermediary between the connecting portion and pivot element. This elastic element mediates the connection by deforming to engage with the pivot element, providing both connection stability and simplified structure without requiring additional fixing components.
2Reliability
If a fixing pin with alignment steps is used to connect the connecting element and pivot element, then the connection stability is improved, but the assembly time and difficulty increase
Solution Approach 1:
The patent eliminates the fixing pin and its associated alignment steps, removing the time-consuming alignment and insertion process. The elastic connecting element automatically engages with the pivot element through its deformation, significantly reducing assembly time while maintaining connection stability.
Solution Approach 2:
The elastic connecting element performs self-alignment and self-connection through its elastic deformation. When the connecting portion is inserted into the pivot element, the elastic element automatically deforms to engage and lock in place, eliminating the need for manual alignment steps and reducing assembly time.
3Device complexity
If a loose connection structure is used between the connecting element and pivot element, then the device complexity is reduced, but impact noise occurs during operation
Solution Approach 1:
The patent uses an elastic connecting element that can dynamically deform to maintain secure engagement with the pivot element. This dynamic elasticity ensures firm connection during operation, preventing impact noise while keeping the overall structure simple without requiring additional fixing components.
Solution Approach 2:
The patent changes the physical state of the connecting element from rigid to elastic. This parameter change allows the connecting element to deform and maintain secure engagement with the pivot element, eliminating impact noise while preserving structural simplicity.
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 provides a stable, noise-free operation with reduced production costs and simplified assembly, as the connecting rod assembly is composed of fewer components and utilizes a straightforward assembly process, ensuring secure and efficient engagement of the connecting rod with the tool head.
Implementation Method 1
a spring (40), both ends of which are pushed respectively against the inner surface of the driving groove (23) and the connecting element (10)
Data Source
AI summary
A connecting rod assembly comprises a connecting element, a pivot element, a connecting rod, a spring and an engaging element. The connecting element is provided at both ends thereof with a connecting portion and a driving portion. The pivot element is provided at a first end thereof with a connecting pillar formed with a pivot hole, and the connecting pillar is further formed in an outer surface thereof with a moving hole in communication with the pivot hole. The connecting rod has a first end thereof connected to the connecting element, and a second end of the connecting rod is pivotally disposed in the pivot hole. The connecting rod is formed with an evasion groove for cooperating with the engaging element. The spring is disposed in the driving groove with both ends thereof pushed against an inner surface of the driving groove and the connecting element.