Device for moving a movable furniture part, and item of furniture having a device for moving a movable furniture part
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Solution Overview
Problem
Existing devices for moving furniture parts, such as drawers, face inefficiencies in charging force accumulators, leading to reduced performance and potential noise issues during the opening and closing operations.
Innovation Solution
A coupling assembly is introduced between the ejector and force accumulator, allowing for operational connection during closing movements to amplify charging force, while maintaining direct contact during opening to prevent force reduction, utilizing a lever assembly and switch elements for precise control and noise reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the ejector is directly connected to the force accumulator during closing movement, then the charging force is transmitted efficiently, but the structure becomes simpler without force amplification
Solution Approach 1:
A coupling assembly is introduced as an intermediary mechanism between the ejector and force accumulator. This coupling assembly includes a lever assembly that amplifies the charging force during closing movements while maintaining operational connection only when needed. The switch element acts as a mediator to engage or disengage the coupling assembly based on the operational phase, thus achieving force amplification without permanent structural complexity.
2Force
If the coupling assembly is always connected, then force amplification is continuous, but force loss occurs during opening procedure due to the interposed coupling assembly
Solution Approach 1:
The coupling assembly is designed to be dynamically engaged or disengaged based on the operational phase. During closing movements, the coupling assembly is engaged to provide force amplification. During opening procedures, the switch element disengages the coupling assembly, establishing direct contact between the ejector and force accumulator. This dynamic configuration eliminates force loss during opening while maintaining force amplification during closing.
Solution Approach 2:
The switch element is positioned and configured to preliminarily determine the operational state before force transmission begins. It anticipates the opening or closing phase and pre-configures the force transmission path accordingly, ensuring direct connection for opening and coupled connection for closing, thus preventing any force loss during opening operations.
3Productivity
If the ejector operates without a coupling assembly, then the structure is simpler, but charging efficiency of the force accumulator is reduced
Solution Approach 1:
The coupling assembly serves as a temporary intermediary during the charging phase only. It includes a lever assembly that mechanically amplifies the force applied to the force accumulator during closing movements, significantly improving charging efficiency. The switch element ensures this intermediary is only active when needed for charging, maintaining structural simplicity during opening operations.
4Object-generated harmful factors
If the ejector maintains direct contact with the force accumulator throughout operation, then force transmission is direct and efficient, but noise increases during opening and closing operations
Solution Approach 1:
The coupling assembly with its lever mechanism acts as a noise-reducing intermediary during closing operations, distributing and smoothing the force transmission to reduce impact noise. The switch element mediates the engagement and disengagement timing, ensuring the coupling assembly is present during closing to reduce noise but absent during opening to maintain direct efficient force transmission when noise is less of an issue.
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
This solution enhances the charging efficiency of force accumulators, reduces noise, and ensures smooth operation by maintaining direct force transmission during opening and amplifying force during closing, thus improving the overall functionality of furniture moving devices.
Implementation Method 1
a force accumulator such that by way of the device which is fitted to the item of furniture the movable furniture part in the case of an opening procedure under the action of the force accumulator by way of an ejector is capable of being put in an opened position
Implementation Method 2
For example, an amplification of a charging force, acting on the ejector, to the force accumulator may be achieved by way of the coupling assembly, for example, by amplification by way of a lever assembly which is effective in the coupling assembly
Data Source
AI summary
A device for moving a movable furniture part, the device including a force accumulator such that by way of the device which is fitted to the item of furniture the movable furniture part in the case of an opening procedure under the action of the force accumulator by way of an ejector is capable of being put in an opening position. According to the present invention, a coupling assembly which in the case of the charging procedure of the force accumulator is effective between the ejector and the force accumulator is provided, and that the ejector is designed in a manner that the latter in the region of the end of the path thereof in the case of the opening procedure by way of a switch element couples to the coupling assembly.