Sliding Rail Auto-Opening Mechanism With Push-Back Unlocking
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Solution Overview
Problem
Conventional auto opening mechanisms for drawers are inefficient as they require center panel pushing, occupy excessive space, and can lead to accidental ejection and injury when a child touches the drawer.
Innovation Solution
A sliding rail assembly auto opening mechanism comprising a holder block, sliding hook, spring member, rocker, and actuating member, where the sliding hook is guided by parallel slots and a spring-controlled rocker to ensure the drawer can only be unlocked by pushing it backwards, preventing false activation and optimizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the auto opening mechanism is installed in the back panel of the desk, then the drawer can be automatically opened when pressed, but the mechanism occupies much inside space of the desk
Solution Approach 1:
The auto opening mechanism is extracted from the back panel of the desk and integrated into the sliding rail assembly. The holder block is mounted on the outer rail instead of the desk back panel, removing the space occupation from the desk's inside space while maintaining the automatic opening function.
Solution Approach 2:
The auto opening mechanism is merged with the sliding rail assembly structure. The holder block, sliding hook, rocker, and spring member are integrated into the existing sliding rail components, combining the automatic opening function with the drawer sliding mechanism to eliminate separate space requirements.
2Extent of automation
If the auto opening mechanism is installed in the back panel of the desk, then the drawer can be automatically opened when pressed, but the user must push the center part of the face panel of the drawer
Solution Approach 1:
The sliding hook acts as an intermediary between the user's pushing force on the drawer face panel and the locking mechanism. When the user pushes any part of the drawer face panel, the force is transmitted through the drawer body to the sliding hook, which then engages with the holder block to trigger the automatic opening sequence, eliminating the need to push the center specifically.
3Extent of automation
If the auto opening mechanism is installed in the back panel of the desk, then the drawer can be automatically opened when pressed, but when a child touches the face panel of the drawer accidentally, the auto opening mechanism may be actuated to eject the drawer out of the desk
Solution Approach 1:
The rocker mechanism requires preliminary action in the form of a deliberate pushing distance to activate the automatic opening function. The front locating rod must be moved a specific distance to disengage from the retaining groove, ensuring that accidental light touches by children do not trigger the mechanism while still allowing intentional opening when sufficient force is applied.
Solution Approach 2:
The mechanism is designed to require a threshold level of action (pushing the drawer face panel backwards over a predetermined distance) to activate. This partial action requirement ensures that minor accidental touches are insufficient to trigger opening, while deliberate user action exceeds the threshold and successfully opens the drawer.
4Ease of operation
If the sliding hook is designed to unlock when pushed, then the drawer can be opened easily, but false action may occur when a child touches the drawer accidentally
Solution Approach 1:
The sliding hook is designed to require preliminary movement over a predetermined distance before unlocking occurs. The front locating rod must be pushed far enough to completely disengage from the retaining groove, ensuring that minor accidental touches do not trigger unlocking while still allowing easy deliberate opening when sufficient force is applied.
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
Enables efficient automatic opening and locking of the drawer without additional desk space usage, preventing accidental ejection and ensuring safe operation.
Implementation Method 1
a spring member, a rocker, and an actuating member... works with the spring member to control the action of the sliding hook
Data Source
AI summary
A sliding rail assembly auto opening mechanism for drawer is disclosed to include a holder block affixed to the outer rail of a sliding rail assembly and defining two longitudinal sliding slots, a sliding hook slidably mounted in the longitudinal sliding slots, a spring member connected between the holder block and the sliding hook, and a rocker, which is pivoted to a pivot in the holder block and has a front locating rod insertable through guide-in groove, sliding groove, retaining groove and guide-out groove at the holder block to automatically lock the sliding rail assembly when the sliding rail assembly is received with the drawer in the desk and to automatically unlock the sliding rail assembly when the drawer is pushed backwards from the locking position over a predetermined distance.