Slide Rail Positioning Assembly for Bearing Retainer Alignment
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Solution Overview
Problem
Conventional slide assemblies fail to move the bearing assembly to the desired position when the inner rail is pulled, leading to frictional issues and incomplete extension, affecting smooth movement and equipment connection.
Innovation Solution
A positioning device with an engaging member on the second rail that includes a resilient portion and contact portions to guide the bearing assembly to the desired position, ensuring engagement with the first rail and preventing dropping, while reducing manufacturing costs by simplifying the mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the bearing assembly is allowed to slide freely with the rails, then the rails can be pulled to maximum distance, but the bearing assembly is shifted by friction and does not move to the desired position
Solution Approach 1:
The engaging member acts as an intermediary between the bearing assembly and the rails. It includes a first contact portion that engages with the bearing assembly and a second contact portion that contacts the rail, transferring motion from the rail to the bearing assembly while overcoming frictional effects.
Solution Approach 2:
The resilient portion replaces complex mechanical positioning mechanisms with an elastic element that automatically adjusts to maintain engagement between the engaging member and the bearing assembly, simplifying the mechanical system while ensuring accurate positioning.
2Reliability
If the bearing assembly is stopped by the stop base at maximum distance, then the bearing assembly does not move to the desired position, but the structure requires additional components to prevent dropping
Solution Approach 1:
The engaging member combines multiple functions into a single component: it prevents the bearing assembly from dropping (replacing the need for separate retaining structures), enables smooth movement to the desired position, and eliminates the need for the stop base by engaging with the rail directly.
Solution Approach 2:
The engaging member serves multiple purposes: it acts as a retaining mechanism to prevent dropping, a positioning device to ensure accurate placement at the desired position, and a motion transfer mechanism between the rail and bearing assembly.
3Manufacturing precision
If the inner rail is guided by the stop base to precisely engage with the bearing assembly, then engagement is achieved, but the engaging mechanism increases manufacturing cost and part count
Solution Approach 1:
The invention extracts the guiding and engagement function from the stop base and relocates it to the engaging member, which is already present in the system. This eliminates the need for the stop base while maintaining precise engagement capability.
Solution Approach 2:
The engaging member uses its own resilient portion and contact portions to automatically guide and engage the inner rail with the bearing assembly, without requiring external guidance structures or additional adjustment mechanisms.
4Ease of operation
If the resilient portion is bent at an angle relative to the fixing portion, then the engaging portion can move toward the first rail, but the structure becomes more complex
Solution Approach 1:
The resilient portion is designed to be flexible and capable of deformation, allowing it to dynamically adjust its shape during the engagement and movement process. This dynamic capability enables smooth operation while the overall structure remains relatively simple.
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 engaging member ensures the bearing assembly moves smoothly to the desired position, preventing frictional stops and ensuring proper alignment for equipment connection, enhancing the sliding mechanism's efficiency and reliability.
Implementation Method 1
The resilient portion extends longitudinally from the fixing portion and is bent an angle relative to the fixing portion
Data Source
AI summary
The slide assembly includes a first rail, a second rail, a bearing assembly and an engaging member. The first rail includes an opening located adjacent to an end thereof and a stop face is defined on a wall of the opening. The bearing assembly is located between the first and second rails. The bearing assembly has a bearing retainer which has a first contact portion. The engaging member is connected to the second rail and has a second contact portion and an engaging portion. The second contact portion is located corresponding to the first contact portion. When the second rail is pulled relative to the first rail, the bearing retainer is moved by engagement between the first and second contact portions. When the bearing assembly moves to a desired position, the engaging portion is inserted into the opening and contacts the stop face so that the second rail is engaged with the first rail.