Drawer Slide Wheel Latch Adjustment for Smooth Pulling Force
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Solution Overview
Problem
Conventional drawer pulling force adjusting apparatuses require complex components and incur high costs, often getting stuck during operation due to their design.
Innovation Solution
A wheel type drawer pulling force adjusting apparatus is developed, featuring a U-shaped bottom rail with a middle and internal rail system, a turning wheel, and positioning slots of varying diameters, allowing for adjustable clamping arm retraction and latch tightness to simplify installation and usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional drawer pulling force adjusting apparatuses are used, then the pulling force can be adjusted, but the device structure becomes complex and costs increase
Solution Approach 1:
The adjusting apparatus is segmented into distinct functional components: a rotating wheel with multiple positioning slots, a clamping arm with adjustable positioning members, and a drawer assembly. This segmentation allows each component to perform its specific function independently, simplifying the overall structure while maintaining adjustment capability.
Solution Approach 2:
The rotating wheel serves multiple functions: it provides the adjustment mechanism, contains the positioning slots for different pulling force levels, and acts as a handle for operation. The clamping arm simultaneously provides clamping force and houses the positioning members. This multi-functionality reduces the number of separate components needed.
2Adaptability or versatility
If conventional drawer pulling force adjusting apparatuses are used, then the pulling force can be adjusted, but the device gets stuck easily during operation
Solution Approach 1:
The positioning members are designed to be movable along the clamping arm, allowing dynamic adjustment during operation. The rotating wheel can rotate freely to different positions, and the positioning members can slide along the clamping arm to engage with different positioning slots, ensuring smooth operation without sticking.
Solution Approach 2:
The positioning slots in the rotating wheel act as intermediaries between the rotation motion and the clamping force adjustment. They provide discrete engagement points that guide the positioning members, ensuring smooth transitions between different pulling force levels without jamming or sticking.
3Strength
If the clamping arms are highly retractable, then the latch tightness increases, but the device complexity increases
Solution Approach 1:
Instead of using a complex mechanism to push the clamping arms inward to increase tightness, the design allows the clamping arms to naturally retract outward due to elastic deformation when the positioning members engage with the positioning slots. This inversion of the force direction simplifies the mechanism while achieving the desired latch tightness.
Solution Approach 2:
The retractability of the clamping arms is adjusted by changing the positioning of the positioning members along the clamping arm. By moving the positioning members to different locations, the degree of retraction and thus the latch tightness can be controlled without modifying the clamping mechanism structure.
Data Source
AI summary
A wheel type drawer pulling force adjusting apparatus is installed to a slide module having a bottom rail, a middle rail and an internal rail. A latch member is fixed to the bottom rail. The slidable middle rail is embedded onto the bottom rail. The internal rail is embedded and slidable on the middle rail. A limit member and a turning wheel are embedded on the internal rail and the bottom rail opposite to the latch member. Positioning slots of different sizes are on the turning wheel. The internal rail is connected with a drawer. During installation, the size of the positioning slots of the turning wheel latched by the limit member determines the level of retracting the limit member, and the tightness of the limit member latched to the latch member of the bottom rail is adjusted to allow users to apply an appropriate force to open the drawer.