Drawer Movement Blocking Mechanism for Shock-Resistant Opening Control

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Solution Overview

Problem

Existing movement control devices for furniture and devices fail to prevent movable objects from being unexpectedly opened during earthquakes, tilts, or collisions, leading to potential damage.

Innovation Solution

A movement control device comprising a first blocking member, a supporting plate, and a second blocking member, where the second blocking member moves between an initial and blocking position to prevent relative movement between objects, utilizing an actuating member to drive the blocking member into position, thereby blocking the movement of the second object when shaken or tilted.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a push-open mechanism is arranged on the slide rail assembly to allow the drawer to be easily opened, then the ease of operation is improved, but the reliability deteriorates because the drawer may be ejected unintentionally when the system is shook, tilted or hit

Engineering Contradiction:
Improveease of opening drawerVSAvoidstability of drawer position
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The blocking member is pre-positioned to counteract the push-open force before the drawer can be unintentionally ejected during shaking, tilting, or collision. This preliminary blocking action prevents the harmful ejection while still allowing intentional opening when needed.

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The blocking member is arranged in advance at a position that will engage with the blocking part of the slide rail assembly before any unexpected movement occurs. This preliminary positioning ensures that the drawer is protected from unintentional ejection before the shaking or collision happens.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If the second blocking member is positioned to block the first blocking member, then the reliability is improved by preventing unexpected opening, but the device complexity increases due to additional blocking components

Engineering Contradiction:
Improveprevention of unexpected openingVSAvoidnumber of blocking components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The blocking function is divided into two segments: the first blocking member (blocking part) integrated into the slide rail assembly and the second blocking member (movable blocking member) that can engage with it. This segmentation allows the blocking function to be distributed and activated only when needed, reducing overall complexity while maintaining reliability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The second blocking member is designed to be movable rather than fixed, allowing it to dynamically engage with or disengage from the first blocking member based on the operational state. This dynamic arrangement reduces complexity by only introducing the blocking function when necessary, while maintaining reliability during critical moments.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS10258155B2Movement control device for part assembly
Publication Date: 2019.04.16 KING SLIDE WORKS CO LTD
  • US10258155B2 patent drawing
  • US10258155B2 patent drawing
  • US10258155B2 patent drawing

AI summary

A movement control device is applicable to a first object and a second object movable relative to the first object. One of the first object and the second object is arranged with a first blocking part and a second blocking part, and the other one of the first object and the second object is movably arranged with a blocking member. When the second object is moved relative to the first object and the blocking member is moved from an initial position to a blocking position, the blocking member is configured to block one of the first blocking part and the second blocking part, in order to prevent the second object from being moved relative to the first object.