Accommodating unit of an insertion connection and insertion connection

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Solution Overview

Problem

Existing plug-in connections for positioning drawers on slides lack flexibility for height adjustment and tolerance compensation, leading to noise and instability due to rigid attachment systems.

Innovation Solution

A receiving unit with a guide aligned transversely to the drawer's movement direction, featuring energy accumulators that allow receiving bodies to move and accommodate a plug-in unit steplessly, and a separate housing part for additional alignment and tolerance compensation, along with a height adjustment unit for precise alignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a rigid attachment system with fixed positioning hooks is used, then the drawer is securely fixed to the runner, but height adjustment and tolerance compensation are limited or impossible

Engineering Contradiction:
Improvesecure fixationVSAvoidheight adjustment capability
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The receiving bodies are designed to be movable within the housing along a guide, transitioning from an initial position to an inserted position. This dynamic mechanism allows the system to adapt to different heights and tolerances while maintaining secure fixation when engaged.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The energy accumulator (spring element) enables the receiving bodies to change their position parameter elastically. The spring allows the receiving bodies to move against its force, providing continuous adjustment capability for height and tolerance compensation.

Inventive Principle:
Principle #35Parameter changes

2Device complexity

If a rigid attachment system with fixed positioning hooks is used, then the drawer structure is simple, but manufacturing tolerances and alignment issues cannot be compensated

Engineering Contradiction:
Improveattachment system structureVSAvoidtolerance compensation
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The spring element enables the receiving bodies to change their position parameter elastically, absorbing manufacturing tolerances in both the drawer and runner while maintaining proper alignment and engagement.

Inventive Principle:
Principle #35Parameter changes

3Device complexity

If the drawer rests loosely on the runner without proper positioning, then the attachment system is simple, but the drawer produces unwanted noise and lacks stability

Engineering Contradiction:
Improvepositioning mechanismVSAvoidnoise and instability
Core Design Contradiction:
Device complexityVSObject-generated harmful factors

Solution Approach 1:

The dynamic positioning mechanism ensures the drawer is properly supported and engaged with the runner, eliminating loose movement and the associated noise while maintaining operational smoothness.

Inventive Principle:
Principle #15Dynamics

4Stability of the object's composition

If receiving bodies are enclosed rigidly in a housing, then the structure is stable, but the plug-in unit cannot penetrate steplessly for continuous adjustment

Engineering Contradiction:
Improvehousing structure stabilityVSAvoidcontinuous adjustment capability
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The guide allows receiving bodies to move dynamically within the housing from an initial position to an inserted position, enabling continuous adjustment while the housing provides stable structural support.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The spring element enables continuous position adjustment of the receiving bodies by allowing elastic movement against the spring force, providing stepless penetration capability for the plug-in unit.

Inventive Principle:
Principle #35Parameter changes

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

Enables flexible and noise-free operation by allowing stepless penetration of the plug-in unit and compensating for manufacturing tolerances, ensuring stable and quiet drawer movement.

Implementation Method 1

the energy accumulator is designed as a U-shaped or L-shaped spring element that compresses the receiving bodies or as an annular spring element that compresses and encloses the receiving bodies

Methodology Applied
Scientific EffectSpring: Spring

Data Source

PatentEP2994012B1Accommodating unit of an insertion connection and insertion connection
Publication Date: 2017.07.12 PAUL HETTICH GMBH & CO KG
  • EP2994012B1 patent drawingFigure 1~2
  • EP2994012B1 patent drawingFigure 3
  • EP2994012B1 patent drawingFigure 4

AI summary

The invention relates to an accommodating unit (4) of an insertion connection for fastening a drawer (1) to at least one drawer guide (5) comprising a housing (13), in which a plurality of accommodating bodies (10) are aligned with each other, wherein a guide (29) oriented perpendicular to the movement direction (x) of the drawer (1) is arranged in the housing (13) and the accommodating bodies (10) arranged in the guide (29) are acted upon against the force of a force accumulator (11, 25) from an initial position, in which the accommodating bodies lie against each other, to an insertion position, in which at least two of the accommodating bodies (10) are spaced from each other by the penetration of at least one insertion unit (6, 26, 27) between the accommodating bodies (10). The invention further relates to an insertion connection for positioning a drawer (1) on at least one drawer guide (5).