Slide rail assembly and rail kit thereof
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Solution Overview
Problem
Existing slide rail assemblies typically offer only a single locking mechanism, limiting their versatility in meeting varying market demands for applications requiring multiple locking stages without a straightforward method to unlock and relock in different positions.
Innovation Solution
A slide rail assembly with two-stage locking mechanisms, utilizing first and second locking mechanisms and an operating member to allow the second rail to be locked in two stages and unlocked in one step, leveraging elastic elements and guiding features to secure and release the rail at predetermined positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single locking mechanism is used in existing slide rail assemblies, then the structure is simple, but the versatility for applications requiring multiple locking stages is limited
Solution Approach 1:
The locking mechanism is divided into two distinct locking mechanisms (first locking mechanism with first and second elements, and second locking mechanism with third element) that operate independently at different positions. This segmentation allows the system to provide multiple locking stages while maintaining clear functional separation, resolving the contradiction between versatility and complexity by making the complexity modular and manageable.
Solution Approach 2:
The operating member is designed to control both locking mechanisms simultaneously, providing multi-functionality. A single operating member can lock and unlock both the first and second locking mechanisms, allowing the system to achieve multiple locking stages without proportionally increasing the number of control components, thus improving versatility without linearly increasing complexity.
2Adaptability or versatility
If two-stage locking mechanisms are implemented, then the adaptability for different locking positions is improved, but the device complexity increases
Solution Approach 1:
The first element and second element of the first locking mechanism, along with the third element of the second locking mechanism, are integrated into a unified structure that shares common components such as the operating member and elastic elements. This merging reduces the total number of independent components compared to having completely separate locking mechanisms, thereby improving locking position adaptability while controlling mechanism complexity.
Solution Approach 2:
The locking elements are arranged in a nested configuration where the first locking mechanism and second locking mechanism are positioned along the same displacement path of the second rail. The elements can be nested or overlapping in their operational zones, allowing compact arrangement that provides multiple locking stages without proportionally increasing the overall structural complexity.
3Reliability
If multiple locking mechanisms are used, then the reliability of position holding is improved, but the ease of operation deteriorates due to multiple unlocking steps
Solution Approach 1:
The operating member is designed as a universal control that simultaneously operates both locking mechanisms. When the user operates the single operating member, it triggers both the first locking mechanism (first and second elements) and the second locking mechanism (third element) to unlock together. This multi-functionality maintains reliability by ensuring both locks are released while improving ease of operation by requiring only one user action instead of multiple separate unlocking steps.
Solution Approach 2:
The elastic elements (first elastic element and second elastic element) are pre-loaded to store potential energy that automatically acts on the locking elements. When the operating member is actuated, the pre-stored elastic energy immediately drives the locking elements to their unlocked positions, ensuring reliable and consistent unlocking action without requiring the user to perform multiple separate operations or apply varying forces.
4Reliability
If elastic elements are used to provide locking force, then the reliability of locking is improved, but the loss of energy through elastic deformation occurs
Solution Approach 1:
The elastic elements are pre-compressed or pre-loaded during the locking process to store potential energy. This preliminary action ensures that when locking is required, the stored elastic energy is immediately available to provide the necessary locking force, improving reliability. The energy is efficiently utilized during the actual locking/unlocking cycles rather than being continuously depleted, minimizing energy loss over time.
Solution Approach 2:
The elastic elements undergo periodic compression and expansion cycles corresponding to the locking and unlocking operations. During each cycle, the elastic energy is stored during compression and released during expansion to drive the locking elements. This periodic action allows the system to efficiently reuse the elastic energy with minimal loss, as the energy is cycled rather than dissipated, maintaining both reliability and energy efficiency over repeated operations.
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 secure two-stage locking and efficient one-step unlocking, allowing the second rail to be displaced and retracted in different directions, enhancing the assembly's adaptability and user convenience.
Implementation Method 1
an elastic element... When the second element is at the second position, the elastic element stores a certain amount of elastic energy due to compression by the second element
Data Source
AI summary
A slide rail assembly includes a first rail, a second rail, a first locking mechanism, and a second locking mechanism. The second rail can be displaced with respect to the first rail. The first locking mechanism and the second locking mechanism are arranged at two different portions of the second rail respectively and are configured to lock the second rail at two predetermined extended positions respectively. The first locking mechanism and the second locking mechanism can be operated so that the second rail is no longer locked by the locking mechanisms and can be retracted with respect to the first rail.