Chest of Drawers Guide Layout for Full Drawer Pull-Out
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Solution Overview
Problem
Existing tool chests of drawers face difficulties in completely pulling out large tools due to the design of the guides, which complicates tool insertion and removal, and the use of telescopic guides increases construction complexity and costs.
Innovation Solution
The chest of drawers incorporates a sliding device with ball bearings and housings positioned near the front edges of the uprights, allowing complete pull-out of drawers without telescopic guides, maintaining a simple and cost-effective structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed guide with bearing and slide is used, then the structure is simple, but the drawer cannot be pulled out completely
Solution Approach 1:
The guide structure is transformed from a static fixed guide to a dynamic telescopic guide that can extend and retract. The telescopic portion includes a movable bearing and slide that extend when the drawer is pulled out and retract when the drawer is closed, enabling complete pull-out while maintaining simple structure at rest.
Solution Approach 2:
The guide is divided into a fixed portion and a telescopic portion. The fixed portion includes the stationary bearing and slide, while the telescopic portion includes additional movable bearing and slide that can extend outward. This segmentation allows the guide to provide extended travel distance when needed while maintaining compact structure when retracted.
2Ease of operation
If telescopic guides are used to enable complete pull-out, then the drawer can be fully extended, but the construction complexity and costs increase
Solution Approach 1:
The telescopic guide employs dynamic elements that extend only when needed. The movable bearing and slide in the telescopic portion are engaged only during drawer extraction, allowing complete pull-out for tool removal while retracting to maintain simple construction during normal closed state.
Solution Approach 2:
The telescopic guide mechanism is designed to automatically extend and retract based on drawer position. When the drawer is pulled out, the telescopic portion extends to provide additional travel; when the drawer is closed, it automatically retracts, eliminating the need for complex manual operation mechanisms.
3Stability of the object's composition
If the bearing is positioned to abut against the slide, then the drawer is stable in pull-out configuration, but the drawer cannot be pulled out completely
Solution Approach 1:
The guide is segmented into fixed and telescopic portions, each with their own bearing and slide. The fixed portion provides stability through its bearing-slide abutment, while the telescopic portion extends the travel distance when needed, allowing both stability and complete pull-out.
Solution Approach 2:
The bearing-slide abutment relationship is made dynamic through the telescopic mechanism. In the retracted state, the fixed bearing abuts against the fixed slide for stability. When extended, the telescopic bearing and slide engage to provide additional stable support during complete pull-out configuration.
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
This design enables easy and complete removal and insertion of tools, simplifies the construction, and reduces costs by eliminating the need for complex telescopic guides while ensuring safety by preventing protruding parts from entangling with workshop tools.
Implementation Method 1
each guide comprises a cylindrical bearing fastened to the respective upright. More specifically, each bearing has a rotation axis perpendicular to the upright and slides over a rail fastened to an outside sidewall of the drawer
Implementation Method 2
the bearing does not allow for the drawer to be pulled out completely
Data Source
Figure 1
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AI summary
A chest of drawers (1) comprises a frame (2) comprising two uprights (3) facing each other, each upright (3) having a front edge (3c); at least one drawer (6) associated with the uprights (3) and having a front portion (6f); the drawer (6) is also sliding with respect to the uprights (3) between a closed configuration in which it is housed between the uprights (3) and a pull-out configuration in which it projects with respect to the front edge (3c) of the uprights (3); at least one guide (9) connected to an inside surface (3a) of one of the uprights (3) and comprising a sliding device (10) rotatably fastened to the upright (3) and associated with the drawer (6) to make it movable along the guide (9); the sliding device (10) is located on said upright (3) near the front edge (3c); the drawer (6) has a housing (14) at the front portion (6f) to accommodate the sliding device (10) when the drawer (6) is in the closed configuration.