Three-Rail Slide Positioning with Automatic Release Mechanism
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Solution Overview
Problem
Conventional three-rail slide assemblies face challenges in automatically releasing the positioning status between the first and second rails, requiring manual intervention and lacking a safe operation mechanism.
Innovation Solution
A positioning device with a resiliently connected engaging member that automatically releases the positioning status between the first and second rails by using a pivotably connected engaging member and a resilient member, allowing the third rail to press the engaging member and release the engagement between the first and second rails when retracted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual release member is used to release the positioning device for the second and third rails, then the positioning status can be released, but the operation becomes complex and requires manual intervention instead of automatic release
Solution Approach 1:
The resilient member is pre-loaded to store elastic energy, and the extension wing is preliminarily positioned to engage with the third rail. When the third rail moves to the retracted position, the pre-positioned extension wing automatically triggers the release of the engaging portion from the positioning portion, eliminating the need for manual intervention while maintaining structural simplicity.
Solution Approach 2:
The positioning device uses the movement of the third rail itself to trigger the release mechanism. The extension wing of the engaging member automatically interacts with the third rail's position to initiate the release action, making the system self-operating without requiring external manual control or complex additional mechanisms.
2Extent of automation
If the engaging member is rigidly connected to the positioning member, then the positioning status is firmly maintained, but the automatic release function cannot be achieved
Solution Approach 1:
The engaging member is pivotally connected to the positioning member, transforming the rigid connection into a dynamic, movable connection. This allows the engaging member to rotate about the pivotal portion when the extension wing is pressed by the third rail, enabling automatic release while maintaining firm positioning during normal operation. The dynamic connection adapts its state based on operational conditions.
Solution Approach 2:
The resilient member changes its elastic deformation parameter to control the engagement state. When the third rail moves to the retracted position, the resilient member's deformation parameter changes, generating sufficient elastic force to rotate the engaging member and release the engaging portion from the positioning portion,从而实现 automatic release while maintaining reliability.
3Extent of automation
If the third rail is retracted to release the positioning status, then automatic release is achieved, but the resilient member must be compressed which requires sufficient space
Solution Approach 1:
The resilient member is nested within the positioning member structure, and the engaging member is nested within the space defined by the positioning member. The extension wing of the engaging member is positioned within the space between the first and second rails. This nested arrangement allows the resilient member to compress within the existing structural space without requiring additional external volume, achieving automatic release while minimizing space requirements.
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 safe and automatic operation of slide assembly parts by ensuring the engaging member is released from the positioning portion of the first rail, allowing the second and third rails to retract freely, enhancing operational safety and efficiency.
Implementation Method 1
A resilient member is connected between the positioning member and the engaging member. The extension wing of the engaging member slides toward the third rail by a force of the resilient member.
Data Source
AI summary
A positioning device of a slide assembly includes a first rail, a second rail slidably connected to the first rail and defining a path, and a third rail slidably connected to the path of the second rail. A positioning member is securely connected to the second rail. An engaging member is pivotably connected to the positioning member and includes an extension arm located corresponding to the positioning portion of the first rail and capable of engaging with the positioning portion. An extension wing has an inclined surface relative to a horizontal plane and extending toward the path of the second rail. A resilient member is connected to the engaging member and makes the extension wing of the engaging member slide toward the third rail. When the third rail is retracted relative to the second rail, the engaging member is disengaged from the positioning portion of the first rail.