Slide Rail Positioning Assembly for Full Extension Engagement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional slide assemblies face issues with the bearing assembly not moving to the desired position when the rails are pulled to the extreme expanding position, leading to friction-induced stopping 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 a pre-set 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 on the rails, then the rails can be pulled to extreme expanding positions, but the bearing assembly cannot move to the desired position due to friction and stops at the maximum distance
Solution Approach 1:
The engaging member is pre-configured with contact portions positioned at specific locations along the second rail. When the second rail is pulled out, these contact portions automatically engage with the bearing assembly at predetermined positions, ensuring the bearing assembly moves to the desired position before friction can prevent further movement.
Solution Approach 2:
The engaging member acts as an intermediary between the second rail and the bearing assembly. It includes a contact portion that engages with the bearing assembly and another contact portion that engages with the first rail, thereby mediating the force transmission and ensuring accurate positioning of the bearing assembly during the pulling operation.
2Reliability
If a conventional engaging mechanism is added to prevent the inner rail from dropping, then the inner rail can be secured, but the device complexity increases and manufacturing cost rises
Solution Approach 1:
The engaging member is designed to perform multiple functions simultaneously: it prevents the second rail from dropping relative to the first rail, positions the bearing assembly at the desired location, and maintains engagement during both extension and retraction operations. This multi-functionality eliminates the need for separate engaging mechanisms, reducing device complexity and manufacturing cost.
Solution Approach 2:
The engaging member combines the positioning function and the retaining function into a single integrated component. The contact portions are strategically positioned to simultaneously achieve bearing assembly positioning and rail engagement prevention, merging multiple functions into one part to reduce overall system complexity.
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 and accurately to the desired position, enhancing stability and precision, and allowing for complete extension and retraction without interference with connected equipment.
Implementation Method 1
a resilient portion (46) extending longitudinally from the fixing portion (44), wherein the resilient portion (46) is bent an angle relative to the fixing portion (44)
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
The slide assembly includes a first rail (10), a second rail (24), a bearing assembly (30) and an engaging member (42). The first rail (10) includes an opening (14) located adjacent to an end thereof and a stop face (16) is defined on a wall of the opening (14). The bearing assembly (30) is located between the first and second rails (10, 24). The bearing assembly (30) has a bearing retainer (32) which has a fist contact portion (36). The engaging member (42) is connected to the second rail (24) and has a second contact portion (48) and an engaging portion (50). The second contact portion (48) is located corresponding to the first contact portion (36). When the second rail (24) is pulled relative to the first rail (10), the bearing retainer (32) is moved by engagement between the first and second contact portions (36, 48). When the bearing assembly (30) moves to a desired position, the engaging portion (50) is inserted into the opening (14) and contacts the stop face (16) so that the second rail (24) is engaged with the first rail (10).