Centering-Rotary Positioning Automatic Closing Device for Drawer Rails
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Solution Overview
Problem
Conventional drawer structures with automatic closing devices face issues such as tilting and resistance due to large gaps and complex machining requirements, leading to poor user experience and stability.
Innovation Solution
A centering-rotary positioning automatic closing device with a guiding holder, sliding block, and toggle block mechanism, featuring a guiding slot, positioning slot, and spring installation, which ensures smooth operation and reliable positioning without resistance, using a fixed and sliding rail configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a moving pin is used with a large gap between the movable member and the plate-shaped fixing member, then the moving pin can move freely, but the moving pin is easy to be tilted resulting in slip or failure
Solution Approach 1:
The guiding part is divided into a linear guider and a rotary guider that work in sequence. The linear guider provides initial guidance, then transitions to the rotary guider which provides rotational constraint. This segmentation allows the moving pin to move freely initially while ensuring stability during the closing operation.
Solution Approach 2:
The guiding mechanism transitions from one-dimensional linear guidance to two-dimensional rotary guidance. The moving pin first moves linearly along the linear guider, then rotates along the rotary guider. This dimensional change allows free movement while preventing tilting through rotational constraint.
2Adaptability or versatility
If the moving pin linear guider and curve guider are perpendicular and communicate with each other, then the moving pin can transition between guides, but sudden resistance increase is felt affecting user experience
Solution Approach 1:
The rotary guider is designed with a curved path that smoothly transitions from the linear guider. Instead of a sharp perpendicular transition, the curved guider provides a gradual transition path, eliminating sudden resistance changes and improving user experience.
3Extent of automation
If a sliding positioning column automatic closing device is used, then automatic closing function is achieved, but the structure takes up large space and requires complex machining processes
Solution Approach 1:
The linear guider and rotary guider are merged into a single integrated guiding part. This combining of functions reduces the number of separate components, simplifies the overall structure, and reduces machining complexity while maintaining the automatic closing function.
Solution Approach 2:
The guiding part serves multiple functions: it provides linear guidance, rotational guidance, and positioning all in one component. This multi-functionality eliminates the need for separate positioning columns and complex machining processes, achieving automatic closing with a simpler structure.
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
The device provides stable and smooth operation, reducing resistance and tilting, enhancing user experience and maintaining reliable positioning, while also being compact and efficient in design.
Implementation Method 1
the guiding holder is connected to the sliding block through a spring
Data Source
AI summary
A centering-rotary positioning automatic closing device includes a sliding rail installed on a fixed rail in a sliding from; wherein a guiding holder is mounted on a bottom of the fixed rail; a guiding part is mounted on the guiding holder along a sliding direction of the sliding rail; a sliding block is installed on the guiding part of the guiding holder and the guiding holder is connected to the sliding block through a spring; the guiding part has a guiding slot; a centering boss and a rotary boss are provided on a bottom of a bottom plate of a toggle block; the centering boss passes through a fixing hole of the sliding block, and the rotary boss passes through a rotary slot of the sliding block and extends into the guiding slot; a front end of the guiding slot has a positioning slot communicating with the guiding slot.