Furniture Ejector Fastening Assembly for Easier Cross-Member Installation
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Solution Overview
Problem
Existing fastening devices for furniture ejectors are difficult to install due to their length, requiring precise mounting and increasing the complexity of assembly, especially when dealing with drawers of varying lengths and heights.
Innovation Solution
A detachable fastening device with snap-connected holding parts that can be attached to the furniture side walls separately and a cross member, allowing for easier installation, and featuring a profile piece with longitudinal profiling for tool-free ejector attachment, along with adjustable components to accommodate different drawer sizes and heights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fastening device is designed as a single long component spanning the entire width of the furniture body, then it provides structural stability and proper alignment, but it becomes difficult to install and requires precise mounting throughout
Solution Approach 1:
The fastening device is divided into multiple separate holding parts (first holding part and second holding part) that can be installed independently on each side wall, rather than as a single long component. Each holding part can be mounted separately and then connected to the cross member, significantly easing installation while maintaining structural integrity through the cross member connection
2Manufacturing precision
If the fastening device extends over the entire width of the furniture body, then it ensures proper alignment and support, but the assembly process becomes more complex and time-consuming
Solution Approach 1:
By segmenting the fastening device into separate holding parts, each part can be independently aligned and mounted on its respective side wall, reducing the overall assembly complexity. The cross member then connects these pre-aligned parts, maintaining precision while simplifying the assembly process
Solution Approach 2:
The holding parts can be pre-aligned and mounted on the side walls before connecting the cross member. This preliminary action allows each holding part to be independently positioned with proper alignment, reducing the complexity of the overall assembly process
3Device complexity
If a single profile piece is used for all ejectors, then it simplifies the design, but it cannot accommodate drawers with different nominal lengths
Solution Approach 1:
The fastening device is segmented into separate holding parts that can be independently positioned at different locations on the side walls. This allows the cross member to be placed at different distances from the rear of the furniture body, accommodating drawers of different lengths while maintaining a simple overall design
Solution Approach 2:
The system becomes dynamic and adaptable by allowing the cross member position to vary. The holding parts can be mounted at different positions on the side walls, enabling the same fastening device design to accommodate drawers with different nominal lengths and heights
Data Source
Figure 1a
Figure 1b
Figure 2
AI summary
Fastening device (1) for fastening a pusher (2) for a movable furniture component (3) in a furniture unit (4), comprising a transverse member (7) which can be fastened to the side walls (6) of the furniture unit (4) by means of two lateral holding parts (5), wherein the transverse member (7) is detachably connected to the holding parts (5).