Buckle Device Resin Guide Suppresses Cable Noise
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Solution Overview
Problem
Buckle devices with metal cables and guide paths generate contact noise due to metal-to-metal contact during cable sliding, which is not effectively suppressed by existing designs.
Innovation Solution
Incorporating a resin protecting member within the guide groove of the buckle device, which abuts the metal connecting member to reduce contact noise, and optionally using a U-shaped cross-section and capping member to facilitate easy insertion and prevent exposure to other metal components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal cable is used as the connecting member and a metal guide path is used to guide it, then the structural strength and durability are improved, but contact noise is generated due to metal-to-metal contact during cable sliding
Solution Approach 1:
A resin protecting member is introduced as an intermediary between the metal connecting member and the metal guide member. This protecting member is provided inside the guide groove and contacts the connecting member during sliding, preventing direct metal-to-metal contact and thereby suppressing contact noise while maintaining the structural integrity of the metal components
Solution Approach 2:
The material parameter of the contacting surface is changed from metal to resin. By coating or providing a resin protecting member on the inner surface of the guide groove, the friction characteristics and acoustic properties are modified, reducing contact noise during cable sliding while preserving the mechanical strength of the metal guide structure
2Object-generated harmful factors
If a resin protecting member is added inside the guide groove to suppress contact noise, then contact noise is reduced, but the device complexity increases
Solution Approach 1:
The protecting member is designed as a thin resin coating or film applied to the inner surface of the guide groove. This approach provides noise suppression functionality with minimal additional complexity, as the resin layer can be applied during manufacturing without requiring separate assembly steps for a bulky protecting component
Data Source
AI summary
A lift-up buckle device has a buckle with which is engaged a tongue through which a webbing, which is applied to a vehicle occupant, is inserted; wires that are made of metal, and whose longitudinal direction one end portions are fixed to the buckle, and that move together with the buckle; a driving portion that is connected to longitudinal direction other end portions of the wires, and that move the wires in a longitudinal direction; a wire guide that is made of metal and holds the wires in a curved state; a guide groove that is formed in the wire guide and in which the wires are inserted; and a resin member that is provided at an interior of the guide groove and abuts the wires.