Drawer Guide Rail Clamping Mount for Secure Functional Parts

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Solution Overview

Problem

Existing drawer pull-out guide rail systems face challenges in securely attaching functional parts, such as toothed racks, touch-latch devices, and damping devices, which can easily detach when force is applied, leading to unreliable operation.

Innovation Solution

A clamping device, comprising at least two bearing elements connected by a tensioning strap or form-fit fastening, secures the functional parts to the rail, preventing unintentional detachment and allowing for synchronized movement between separate drawer pull-out guides.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If functional parts are attached to the rail using end plugs or simple fastening methods, then the attachment process is quick and simple, but the functional parts can easily become detached when force is applied

Engineering Contradiction:
Improveattachment processVSAvoidattachment reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The bearing elements are pre-positioned on the rail in a non-positive connection manner, allowing easy installation. Subsequently, the clamping device is activated to securely fasten the bearing elements to the rail, transforming the attachment from a simple preliminary state to a secure final state without requiring complex initial alignment

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The clamping device transitions from an unactivated state where bearing elements are loosely positioned to an activated state where they are securely clamped to the rail. This dynamic transformation allows the system to adapt from an easy-to-install configuration to a force-resistant configuration based on operational requirements

Inventive Principle:
Principle #15Dynamics

2Reliability

If a secure attachment method is used to prevent detachment, then the attachment reliability improves, but the device complexity increases

Engineering Contradiction:
Improveattachment reliabilityVSAvoidattachment mechanism
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The attachment system is divided into separate functional components: bearing elements that interface with the rail, a clamping device for securing, and a functional part interface. This segmentation allows each component to perform its specific function independently, maintaining reliability while avoiding the need for a monolithic complex attachment mechanism

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The bearing elements serve multiple functions: they provide a mounting interface on the rail, serve as attachment points for the clamping device, and provide a connection interface for the functional part. This multi-functionality reduces the number of separate components needed, thereby reducing overall device complexity while maintaining secure attachment

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

Data Source

PatentEP2642895B1Drawer pull-out guide rail with a device for attaching a functional part to the rail of the drawer pull-out guide
Publication Date: 2014.12.10 JULIUS BLUM GMBH
  • EP2642895B1 patent drawingFigure 1
  • EP2642895B1 patent drawingFigure 2a~2b
  • EP2642895B1 patent drawingFigure 2c

AI summary

The invention relates to a device (20) for attaching a functional part (14) to a rail (5, 6) of a drawer pull-out guide (3), comprising a first bearing element (11) and at least one second bearing element (12), wherein the bearing elements (11, 12) are arranged in the front end area of the rail (5) and in the rear end area of the rail (5), wherein at least one clamping device (13) is provided, by means of which the at least two bearing elements (11, 12), in the installed position thereof on the rail (5), can be connected to each other and braced relative to each other.