Drawer Coupling with Side Adjustment and Self-Locking Alignment

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Solution Overview

Problem

Existing drawer coupling systems to extension guides often result in drawers being pulled out inclinedly due to production inaccuracies or improper mounting, leading to an uneven front panel appearance in furniture, and current adjustment solutions risk inadvertently releasing the coupling, complicating manufacturing and requiring additional components.

Innovation Solution

A coupling apparatus with a fixing portion and a coupling portion that are movable relative to each other, utilizing an adjusting device for lateral adjustment, which includes self-locking mechanisms to prevent unintended release, allowing for precise horizontal alignment of drawers without additional components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a coupling apparatus with lateral adjustment is provided using a slider, then lateral adjustment capability is achieved, but the coupling apparatus may come loose from the engagement position with the extension rail due to lever action

Engineering Contradiction:
Improvelateral adjustment capabilityVSAvoidcoupling engagement stability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The coupling apparatus employs a dynamic adjustment mechanism where the slider can move laterally along the extension rail within a controlled range. The slider's position is adjustable during operation to compensate for installation inaccuracies, while the coupling geometry ensures that the engagement point remains stable and does not come loose during normal drawer operation.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The slider acts as an intermediary element between the coupling apparatus and the extension rail. It provides lateral adjustment capability while maintaining a stable coupling connection through its geometric relationship with the coupling elements, preventing the apparatus from coming loose while enabling position adjustment.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If additional components like an adaptor rail are added for lateral adjustment, then lateral and heightwise adjustment is achieved, but manufacturing complexity and space requirements increase

Engineering Contradiction:
Improveadjustment functionalityVSAvoidnumber of components
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The coupling apparatus integrates both lateral adjustment and heightwise adjustment functionalities into a single unified component structure. The slider is incorporated directly into the coupling apparatus body, eliminating the need for separate adaptor rails or additional adjustment mechanisms. This merging of functions reduces the total number of components while maintaining full adjustment capability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The coupling apparatus is designed as a multi-functional component that simultaneously provides attachment to the extension rail, lateral adjustment, and heightwise adjustment capabilities. This universal design allows a single component to perform multiple functions that would traditionally require separate dedicated components, thereby reducing overall system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS8919711B2Coupling device having side adjustment for a drawer
Publication Date: 2014.12.30 JULIUS BLUM GMBH
  • US8919711B2 patent drawing
  • US8919711B2 patent drawing
  • US8919711B2 patent drawing

AI summary

The invention relates to a device for detachably coupling a drawer to an extendable rail of a pullout guide, comprising an adjusting apparatus by means of which a position of a drawer connected to the rail can be adjusted in the lateral direction relative to the rail, wherein the device has a fastening part that can be fastened to the drawer and a coupling part that can be coupled to the rail, wherein the coupling part can be detachably coupled to the rail, and wherein the position of the fastening part and the coupling part relative to each other can be adjusted by the adjusting device.