Rigid Noise Reduction Gasket for Relay Impact Buffering
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Solution Overview
Problem
Existing relays, particularly high voltage DC relays used in electric vehicles, generate significant noise during contact disconnection due to the impact of the driving rod assembly on the yoke plate, which is not effectively mitigated by conventional soft pads that are prone to fatigue and foreign matter issues, compromising noise reduction and mechanical life.
Innovation Solution
A noise reduction gasket made of rigid material with a bearing part on the yoke plate and a supporting part for the driving rod assembly, featuring a flexible deformation part that buffers the impact and absorbs noise, providing improved fatigue resistance and a longer service life by isolating the driving rod assembly from the yoke plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a relay is mounted directly on a vehicle body without isolation, then installation is simple, but noise from engine vibration and road impact is transmitted to the relay
Solution Approach 1:
A gasket is introduced as an intermediary component between the relay and the vehicle body. This gasket serves as a mediator that blocks the transmission path of noise and vibration from the engine and road to the relay, while maintaining a relatively simple overall mounting structure.
Solution Approach 2:
The mounting structure is segmented into multiple functional components: the gasket (for noise isolation), the relay holder (for positioning), and the mounting bracket (for attachment). This segmentation allows each component to perform its specific function efficiently while keeping the overall system manageable.
2Reliability
If a relay is mounted directly on the vehicle body without positioning features, then the mounting structure is simple, but the relay position becomes loose and unreliable
Solution Approach 1:
The gasket is designed with localized positioning features including protrusions that fit into recesses and notches that engage with corresponding features on the vehicle body. This local quality enhancement provides precise positioning and secure attachment without requiring complex overall structure.
Solution Approach 2:
The gasket utilizes elastic deformation properties to create a flexible sealing surface that can adapt to slight variations in the mounting surface, ensuring reliable contact and positioning while maintaining structural integrity.
3Manufacturing precision
If a gasket with protrusions and recesses is used to position the relay, then positioning accuracy improves, but manufacturing complexity increases
Solution Approach 1:
The gasket material is selected with specific elastic properties that allow it to be formed into complex shapes with protrusions and recesses through molding or stamping processes. The material parameters are chosen to enable precise feature formation while maintaining ease of manufacturing through conventional gasket fabrication methods.
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 noise reduction gasket effectively reduces noise generation and transmission by buffering the impact and increasing energy loss, ensuring a low-noise experience and extending the mechanical life of the relay through its rigid construction and efficient noise absorption mechanism.
Implementation Method 1
a gasket (1) comprising an elastic body
Data Source
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AI summary
The present invention relates to the technical field of electric power, and provides a noise reduction gasket and a relay. The noise reduction gasket is located between the driving rod assembly (200) and a yoke plate (300). The noise reduction gasket comprises a bearing portion (1), a supporting portion (2) and a flexible deformation portion (3); the bearing portion (1) is provided on the yoke plate (300); the supporting portion (2) is connected to the bearing portion (1); the driving rod assembly (200) is configured to pass through the supporting portion (2) along a first direction and selectively abut against the supporting portion (2); the flexible deformation portion (3) is provided between the bearing portion (1) and the supporting portion (2), and is used for cushioning between the supporting portion (2) and the bearing portion (1) and noise reduction, wherein the noise reduction gasket is at least partially made of a rigid material. The noise reduction gasket is at least partially made of a rigid material, so that the noise reduction gasket has high strength, is not prone to large deformation, has good fatigue resistance, and has a long service life.