Handleless Drawer Ejection Layout to Prevent Partial Opening
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Solution Overview
Problem
Wide drawers in furniture without handles pose a risk of faulty or partial opening due to uneven release of ejecting means, leading to misalignment or breakage, and existing synchronization solutions are complex and costly.
Innovation Solution
A piece of furniture with ejecting means on one side and retaining means on the other, configured to ensure proper opening by limiting the thrust required and preventing misalignment, using a slider and thrust spring for ejecting means and a tiltable slider and traction spring for retaining means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ejecting means are arranged on both lateral walls of the drawer, then the drawer can be opened reliably, but the construction becomes complex and costly when synchronization devices are added
Solution Approach 1:
The patent removes the ejecting means from one lateral wall, keeping it only on the other wall. This extraction eliminates the need for synchronization devices between two ejecting systems, reducing construction complexity and costs while maintaining reliable drawer opening through the single remaining ejecting means
Solution Approach 2:
The patent introduces a retaining means as an intermediary element on the lateral wall without ejecting means. This retaining means works in conjunction with the single ejecting means to ensure proper drawer opening sequence and prevent faulty operation, replacing the need for complex synchronization devices
2Reliability
If ejecting means are arranged on both lateral walls of the drawer, then the drawer can be opened reliably, but the manufacturing and mounting costs increase substantially
Solution Approach 1:
The patent extracts the ejecting means from one lateral wall, reducing the total number of ejecting devices from two to one. This directly reduces manufacturing material costs, assembly time, and mounting complexity, while the retaining means ensures the system remains reliable
Solution Approach 2:
The retaining means serves as a simple, cost-effective component that replaces the need for expensive synchronization devices. It is a straightforward mechanical element that is easy to manufacture and install, providing the necessary function at low cost
3Ease of operation
If the user presses a lateral area of the drawer front, then the drawer can be opened, but there is a risk of partial or faulty opening and misalignment
Solution Approach 1:
The retaining means acts as an intermediary that coordinates the action of the single ejecting means. It ensures that when the user presses the drawer front, the ejecting means is properly activated and the drawer opens completely and aligned, preventing partial opening and misalignment while maintaining ease of operation
Solution Approach 2:
The retaining means provides mechanical feedback to ensure proper drawer opening. It engages and disengages in a controlled sequence with the ejecting means, ensuring that the drawer moves correctly and completely, preventing faulty operation while responding to user input
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
Ensures reliable and safe opening of wide drawers without partial or faulty opening, maintaining simplicity and low costs in construction.
Implementation Method 1
a thrust spring (20) connected at one end with the slider (18) and at the other end with a base body (19) so as to be loaded by the movement of the slider (18)
Implementation Method 2
a tiltable slider (23) which is biased in the closing direction by a traction spring (24)
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The piece of furniture (10) having at least one drawer (13) or the like comprises a first and a second wall (11, 12) laterally arranged to the drawer (13) and provided with respective pull-out guides (14, 15) for the drawer, and ejecting means (16; 42) conformed and arranged for generating a thrust in an opening direction on the drawer (13), the ejecting means (16; 42) being lockable in a closing position of the drawer by means of re leasable locking means (21, 22; 44, 46); the ejecting means (1 6; 42) with the relevant locking means (21, 22; 44, 46) are provided at only one (11) of the walls (11, 12) of the piece of furniture (10) laterally arranged to the drawer (13).