Buckle Retention Section Stabilizes Elongated Member

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Solution Overview

Problem

Existing buckle devices lack stabilization of the length direction leading end portion of the elongated member during assembly, leading to difficulties in assembly and potential misalignment.

Innovation Solution

A buckle device design that includes a retention section on the first member to engage and stabilize the elongated member's length direction leading end portion, with additional retention features such as elastic deformation suppression and offset retention portions to prevent displacement, ensuring proper positioning during assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the elongated member is simply anchored to the buckle cover without additional retention features, then the device structure remains simple, but the position of the length direction leading end side portion of the elongated member is not stabilized during assembly

Engineering Contradiction:
Improveposition stabilization of elongated memberVSAvoidstructure of retention section
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The retention section is divided into multiple functional portions: a retention groove for basic positioning, and retention ribs extending from the groove for enhanced stabilization. This segmentation allows the complex function of securing the elongated member to be distributed across simpler structural elements, improving manufacturing precision without overwhelming device complexity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The retention groove and retention ribs are pre-formed as integral features of the buckle cover before assembly. This preliminary action ensures the elongated member is correctly positioned and stabilized during the assembly process itself, eliminating the need for additional stabilization steps or components

Inventive Principle:
Principle #10Preliminary action

2Reliability

If the retention section is designed to be elastically deformable for retention, then the elongated member can be securely retained, but elastic deformation may occur during normal operation causing loss of retention

Engineering Contradiction:
Improveretention of elongated memberVSAvoidelastic deformation of retention section
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The retention section utilizes controlled elastic deformation within specific parameter ranges. The retention ribs are designed with dimensions and material properties that allow them to deform elastically during assembly to accommodate the elongated member, then maintain a stable retained state during normal operation without exceeding the elastic limit

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The retention groove provides a pre-formed receptacle that cushions and guides the elongated member into the retention ribs during assembly. This beforehand cushioning prevents impact damage and ensures proper seating of the member before the retention ribs engage, maintaining reliable retention while minimizing harmful deformation

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

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 stabilizes the elongated member's position, facilitating easy assembly and preventing misalignment, thereby enhancing the operational stability and ease of use of the buckle device.

Implementation Method 1

the retention section is configured to be elastically deformed, an elastic deformation of the retention section being suppressed by the second member

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS10654441B2Buckle device
Publication Date: 2020.05.19 KK TOKAI RIKA DENKI SEISAKUSHO
  • US10654441B2 patent drawing
  • US10654441B2 patent drawing
  • US10654441B2 patent drawing

AI summary

A buckle device including: a buckle that is configured to engage with a tongue of a seatbelt device, a cover member that includes a first member and a second member for assembly together, and at which the buckle is provided; an elongated member that is anchored to the first member at a length direction leading end portion of the elongated member, and a retention section that is provided at the first member, and that is configured to engage a portion of the elongated member that is further toward a length direction base end side of the elongated member than the length direction leading end portion.