Self-Closing Slide Rail Assembly With Smooth Retraction Control
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Solution Overview
Problem
Existing automatic slide rail systems do not provide a smooth and controlled retraction mechanism, lacking a deceleration mechanism to ensure the second rail is moved to the retracted position both automatically and slowly relative to the first rail.
Innovation Solution
A self-closing slide rail assembly with a deceleration mechanism, comprising a first rail, a second rail, a self-closing mechanism, and a deceleration mechanism, where the self-closing mechanism includes a housing, a movable member, and an elastic member, and the deceleration mechanism includes a base, a supporting member, and a deceleration spring, which counteracts the elastic force to slow down the retraction of the second rail.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If an automatic self-closing mechanism is used to retract the second rail, then the retraction is automated, but the retraction speed is not controlled and the process is not smooth
Solution Approach 1:
A deceleration mechanism is introduced as an intermediary between the self-closing mechanism and the second rail. This deceleration mechanism includes a deceleration spring that counteracts the elastic force of the self-closing spring, thereby controlling the retraction speed and providing a smooth, gradual closing action rather than abrupt movement.
Solution Approach 2:
The system uses two different spring constants (elastic member spring constant and deceleration spring constant) to control the force parameters during retraction. By carefully selecting the deceleration spring constant to be less than that of the elastic member, the patent achieves a controlled deceleration effect that maintains automation while regulating speed.
2Speed
If a strong elastic force is applied to retract the second rail quickly, then retraction speed increases, but the closing action becomes abrupt and uncontrolled
Solution Approach 1:
The deceleration spring is pre-configured to apply a counteracting force that opposes the elastic member's retraction force. This preliminary anti-action ensures that as the second rail approaches the retracted position, the deceleration effect gradually increases, preventing abrupt closing and providing a smooth, controlled deceleration throughout the closing process.
3Device complexity
If only a self-closing mechanism is used, then the structure is simpler, but the retraction lacks deceleration control and smoothness
Solution Approach 1:
The patent merges the self-closing mechanism and the deceleration mechanism into a single integrated assembly. Both mechanisms share common components such as the housing, movable member, and guiding structures, thereby reducing overall structural complexity while achieving both automatic closure and smooth deceleration control.
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
Enables the second rail to be automatically and slowly moved to the retracted position, providing a controlled and smooth retraction process, enhancing the operational ease and user experience.
Implementation Method 1
The elastic member serves to apply to the movable member an elastic force in the first direction
Implementation Method 2
The deceleration spring serves to apply to the supporting member an elastic force in a second direction opposite the first direction, wherein the elastic force applied by the deceleration spring is less than the elastic force applied by the elastic member
Data Source
AI summary
A self-closing slide rail assembly with a deceleration mechanism includes first and second rails and a self-closing mechanism, in addition to the deceleration mechanism. The self-closing mechanism is mounted to the first rail and includes an elastic member for providing an elastic force in a first direction. The deceleration mechanism includes a deceleration spring for providing an elastic force in an opposite second direction. When the second rail is displaced from an extended position toward a retracted position relative to the first rail, the self-closing mechanism automatically drives the second rail toward the retracted position due to the elastic force applied by the elastic member. Meanwhile, the elastic force of the deceleration spring serves as a deceleration force, allowing the second rail to move slowly to the retracted position.