Synthetic Resin Hinge Connectors for Multi-Level Wiper Levers
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Solution Overview
Problem
Existing wiper devices with multi-level lever structures face challenges in efficiently connecting levers, leading to direct metal friction and potential damage, which affects the transmission of force and longevity.
Innovation Solution
A wiper device with a new connection structure using a synthetic resin connection member to hinge-connect metal levers, preventing direct metal friction and distributing forces to reduce deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If levers are directly connected in a multi-level lever structure, then the structure is simple and easy to manufacture, but direct metal friction causes wear and potential damage affecting reliability
Solution Approach 1:
A connection member made of synthetic resin material is introduced as an intermediary component between the first lever and the second lever. This connection member includes a first connection protrusion that engages with the first lever and a second connection protrusion that engages with the second lever, thereby preventing direct metal-to-metal contact and friction between the levers while maintaining a relatively simple overall structure.
2Duration of action of stationary object
If metal levers are directly connected, then manufacturing is easier, but friction between metal materials causes wear and reduces durability
Solution Approach 1:
The connection member is made of synthetic resin material, creating a composite material solution where the resin connection member joins metal levers. This composite approach reduces friction and wear between metal surfaces, thereby extending device lifespan, while the synthetic resin material can be easily molded and manufactured using conventional processes.
3Reliability
If levers are hinge-connected through a connection member, then friction and damage are reduced, but the connection structure becomes more complex
Solution Approach 1:
The connection structure is segmented into distinct functional elements: the connection member itself, the first connection protrusion, the second connection protrusion, and the engagement features on each lever. This segmentation allows each component to be optimized independently while maintaining overall simplicity through modular assembly.
Data Source
AI summary
A wiper device is disclosed. The wiper device of the present invention is coupled to a wiper arm and removes a foreign substance attached to a windshield. The wiper device includes a contact member configured to wipe off the foreign substance, a lever structure configured to press the contact member to be tightly in contact with the windshield and having a plurality of levers connected in a multi-level structure, and an adapter configured to be coupled to the lever structure and connected to the wiper arm, wherein the lever structure comprises a connection member configured to hinge-connect at least at least one pair of the plurality of levers.