Slide Rail Assembly with Two-Stage Locking for Precise Repositioning
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Solution Overview
Problem
Existing slide rail assemblies lack a versatile two-stage locking mechanism that allows for precise positioning and easy repositioning of the second rail with respect to the first rail, limiting their adaptability to varying market demands.
Innovation Solution
A slide rail assembly with a two-stage locking mechanism, featuring first and second locking mechanisms and an operating member, which allows the second rail to be locked and unlocked at predetermined positions, enabling displacement and retraction in specific directions, utilizing pivotally connected elements and elastic portions for guided movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single locking mechanism is used in existing slide rail assemblies, then the structure is simple, but the positioning precision and repositioning capability are insufficient
Solution Approach 1:
The locking mechanism is divided into two independent stages: a first locking mechanism with a first locking element and a second locking mechanism with a second locking element. Each stage provides independent positioning at different locations along the first rail, enabling precise multi-position locking while maintaining modular simplicity in each individual component.
Solution Approach 2:
The locking elements are designed to be movable between locked and unlocked states through the operation of a single operating member. The first locking element can be independently actuated from the second locking element, providing dynamic control over positioning stages and enabling seamless transitions between locked and repositioned states.
2Adaptability or versatility
If a two-stage locking mechanism is implemented, then positioning precision and adaptability are improved, but the device complexity increases
Solution Approach 1:
The first locking mechanism and second locking mechanism are integrated into a single unified assembly where both locking elements are mounted on the second rail and interact with the same first rail. This merging allows both locking stages to be controlled by a single operating member, reducing overall system complexity while maintaining versatile repositioning capability.
Solution Approach 2:
The operating member is designed to perform multiple functions: it can actuate the first locking element, actuate the second locking element, and coordinate between the two stages. This multi-functional design eliminates the need for separate control mechanisms for each locking stage, thereby reducing device complexity while enhancing adaptability.
3Reliability
If locking elements are made robust for secure locking, then locking reliability is improved, but the ease of operation for unlocking is reduced
Solution Approach 1:
The operating member serves as an intermediary that transmits user input force to both locking elements. It coordinates the unlocking action between the first and second locking elements, allowing a single simple user operation to reliably disengage both robust locking mechanisms simultaneously, thereby maintaining locking reliability while dramatically improving ease of operation.
Solution Approach 2:
The locking elements are designed with self-latching features that maintain secure locking without continuous force application. Once locked, they remain reliably engaged until the operating member is actuated. The operating member itself is designed to be easily operable by hand, allowing users to effortlessly override the robust locking when repositioning is needed, balancing reliability with ease of operation.
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 precise positioning and repositioning of the second rail, enhancing adaptability and user control, while maintaining secure locking and unlocking states through the operation of the sliding mechanisms.
Implementation Method 1
a first elastic portion (72a) and a second elastic portion (72b) respectively
Data Source
Figure 1
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Figure 3
AI summary
A slide rail assembly (22) includes a first rail (26), a second rail (28), a first locking mechanism (46), a second locking mechanism (48), and an operating member (50). The second rail (28) can be displaced with respect to the first rail (26). The first locking mechanism (46) and the second locking mechanism (48) are configured to keep the second rail (28) at either of two predetermined positions (P1, P2). The operating member (50) can be used to operate the first locking mechanism (46) and the second locking mechanism (48) and thereby bring the locking mechanisms from a locked state (S1) to an unlocked state (S2).