Retraction device for a drawer pullout
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing drawer pull-out mechanisms are complex and costly due to their intricate construction, which is not economically viable without ejection functionality, and they require significant space for retraction and blocking devices.
Innovation Solution
A simplified retraction device with a pivoting element and locking slide mechanism, where the pivoting element is blocked by a locking slide in a blocking position, utilizing a single or multiple helical springs for mechanical stability and low production costs, and incorporating a damping element for smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex retraction device with multiple components is used, then reliable automatic retraction and locking functionality is achieved, but device complexity and production costs increase
Solution Approach 1:
The patent combines the retraction device and locking device into a single integrated mechanism. The carriage serves dual functions: it performs automatic retraction of the inner rail while also engaging with the locking strip to prevent simultaneous drawer operation. This merging eliminates the need for separate retraction and locking mechanisms, reducing overall device complexity while maintaining reliability of both functions
Solution Approach 2:
The carriage is designed as a multi-functional component that simultaneously performs retraction, locking, and ejection functions. It interacts with both the inner rail for retraction and the locking strip for safety locking, making a single component perform multiple critical functions that would traditionally require separate devices
2Reliability
If traditional retraction and locking devices are installed, then safety and functionality are ensured, but space requirements increase
Solution Approach 1:
By integrating the locking device into the retraction device structure, the patent reduces the spatial footprint required for safety functionality. The locking strip and carriage share the same operational space, eliminating the need for additional dedicated locking mechanism space
3Adaptability or versatility
If ejection functionality is included, then complete drawer control is achieved, but production costs increase
Solution Approach 1:
The carriage is designed to perform multiple functions including retraction, locking, and ejection. By making the same component multi-functional rather than adding separate ejection mechanisms, the patent achieves complete drawer control while avoiding the increased production costs that would result from additional specialized components
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 solution provides a mechanically robust and cost-effective drawer pull-out mechanism with reduced complexity, preventing simultaneous drawer extraction and minimizing noise and risk of injury, while ensuring reliable automatic retraction and ejection functionality.
Implementation Method 1
spring means which are arranged between the carriage and the guide receptacle and which apply a spring force to the carriage in the direction of retraction
Implementation Method 2
incorporating a damping element for smooth operation
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A retraction device (10) for a drawer mechanism comprises a spring-loaded carriage (40) that can be moved in the push-in/pull-out direction for temporary coupling to an inner rail (4) of the drawer mechanism. The carriage (40) can be blocked in a retraction position by means of a locking slide (21, 22) that can be moved transverse to the push-in/pull-out direction in a guide. For coupling to the inner rail (4), the carriage (40) has at least one pivot element (45, 46), which can be pivoted about an axis oriented perpendicular to the push-in/pull-out direction and perpendicular to the direction of movement of the locking slide (21, 22). The pivot element (45, 46) and guide are arranged in such a manner that, in a locking position, the locking slide (21, 22) blocks a pivoting movement of the pivot element (45, 46). This results in simple construction and thus low costs and high mechanical stability.