Telescopic Ejector Lever for Stable Furniture Part Ejection
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Solution Overview
Problem
Existing ejector mechanisms for furniture parts require multiple lever designs for varying applications, leading to increased production costs and potential buckling or kinking issues due to fixed lever lengths, which affects the ejection path and torque transmission.
Innovation Solution
A variable-length ejector lever system with a telescopic design and mechanical adjusting device, allowing the lever to change length during the ejection process, ensuring stable operation and efficient torque transmission without kinking, and accommodating different furniture designs with a single lever type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-length ejection lever is used, then the structure is simple, but the ejection process cannot be optimized for different applications and requires multiple lever designs
Solution Approach 1:
The ejection lever is designed with variable length capability through a telescopic structure with at least two lever parts that can shift relative to each other. This dynamic adjustment allows the same lever to adapt to different ejection paths and torque requirements across various applications, eliminating the need for multiple fixed-length lever designs.
Solution Approach 2:
The lever length parameter is made changeable during operation. By allowing the lever parts to shift relative positions, the effective length of the ejection lever can be adjusted to optimize performance for different furniture applications, from drawers to furniture flaps, while using a single lever design.
2Ease of manufacture
If a fixed-length ejection lever is used, then manufacturing is simple, but production costs increase due to multiple lever types
Solution Approach 1:
A single ejection lever design with variable length capability serves multiple furniture applications. Instead of manufacturing different fixed-length levers for different applications, one universal lever with adjustable length can be produced in larger quantities, reducing per-unit costs and simplifying the supply chain.
Solution Approach 2:
The telescopic structure with shiftable lever parts allows a single lever design to replace multiple fixed-length lever types. This dynamic capability enables one lever to perform the functions of several different levers, reducing manufacturing variety and associated costs.
3Volume of moving object
If a telescopic ejection lever is used, then space requirement is reduced, but the lever may buckle during operation
Solution Approach 1:
The lever parts are designed to shift relative to each other in a controlled manner during the ejection process. This dynamic adjustment ensures that the lever maintains optimal structural integrity and resistance to buckling while achieving compact retraction. The shifting mechanism is synchronized with the ejection motion to prevent instability.
4Length of moving object
If the ejection lever length is increased, then the ejection path is improved, but the torque requirement increases
Solution Approach 1:
The variable-length ejection lever allows optimization of the ejection path by extending the lever length when needed, while the system can adjust the lever length to manage torque requirements. The dynamic length adjustment enables the lever to provide longer ejection paths when higher torque is available, and shorter effective lengths when torque is limited.
Data Source
Figure 1a
Figure 1b
Figure 2a~2c
AI summary
The invention relates to an ejector (100) for ejecting a movable furniture part (102) from a closed end position in or on a furniture body (101), comprising an ejection lever (1) that can be driven by an electrical drive unit, in particular an electric motor, wherein the ejection lever (1) has a first ejection lever part (11) and a second ejection lever part (12) that can be moved relative to the first ejection lever part, wherein an adjusting device (2) is provided, which causes the length of the ejection lever (1) to change during the ejection process as a result of the two ejection lever parts (11, 12) sliding relative to each other.