Slide Cover Rib Structure for Vertical Load Durability

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Solution Overview

Problem

Conventional slide devices face challenges in maintaining durability against vertical loads, particularly when subjected to downward pressure, leading to plastic deformation and damage of the cover member, which affects both aesthetics and functionality.

Innovation Solution

The slide device incorporates a rib structure between the upper and lower walls of the slide cover, which faces each other with the side edge of the cover member interposed between them, along with a reel mechanism to wind and secure the cover member, enhancing durability and reducing rattling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a wall linearly extending in horizontal direction is used to cover the side edge portion of the cover member, then the cover member is protected and posture is maintained, but durability against vertical load is insufficient causing plastic deformation

Engineering Contradiction:
Improveprotection of cover member and posture maintenanceVSAvoiddurability against vertical load
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The patent transitions from a horizontal linear wall structure to a vertical wall structure with ribs extending in the sliding direction. This dimensional change allows the wall to resist vertical loads more effectively while maintaining coverage of the cover member's side edge portion.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent introduces ribs as localized structural enhancements within the wall. These ribs are positioned specifically to provide additional strength against vertical loads while maintaining the overall coverage function of the wall.

Inventive Principle:
Principle #3Local quality

2Weight of moving object

If the upper wall is made thinner to reduce weight, then weight reduction is achieved, but the upper wall becomes susceptible to plastic deformation under downward stress

Engineering Contradiction:
Improveweight of slide coverVSAvoidresistance to plastic deformation
Core Design Contradiction:
Weight of moving objectVSStrength

Solution Approach 1:

Instead of uniformly thickening the upper wall, the patent introduces ribs as localized structural enhancements. This maintains weight efficiency while providing targeted strength where vertical loads are applied to the cover member.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent creates a composite structure combining the upper wall and ribs, where the ribs act as reinforcement elements within the wall structure, providing enhanced strength-to-weight ratio.

Inventive Principle:
Principle #40Composite materials

Data Source

PatentUS12351081B2Slide device
Publication Date: 2025.07.08 NHK SPRING CO LTD
  • US12351081B2 patent drawing
  • US12351081B2 patent drawing
  • US12351081B2 patent drawing

AI summary

A slide device including: a fixed rail; a movable rail; a belt-shaped cover member including a coupling plate coupled to the movable rail at an end portion of the belt-shaped cover member, the belt-shaped cover member closing an opening groove of the fixed rail between a longitudinal end portion of the fixed rail and the movable rail; and a slide cover that covers a periphery of a side edge portion of the cover member, wherein the slide cover includes: an upper wall; a lower wall; and a rib disposed along a sliding direction of the movable rail and protruding in a direction toward the side edge portion of the cover member, on at least one of a surface of the upper wall facing the side edge portion of the cover member or a surface of the lower wall facing the side edge portion of the cover member.