Slide Rail Spring Pressure Device with Stroke and Step Path Control
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Solution Overview
Problem
Existing cabinet systems with pull-out drawers lack stability and efficient elastic force accumulation in their spring pressing mechanisms, leading to unstable drawer operations.
Innovation Solution
A spring pressure device set comprising a base member, elastic member, slider, and control rod, where the hook portion of the control rod moves stably through stroke and step paths, accumulating elastic force and ejecting the slider via the elastic member's force, with the activating member of the second rail locking and unlocking the hook portion at the locking point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a spring pressing mechanism is added to facilitate drawer pull-out operation, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent combines the spring pressing mechanism with the slide rail structure by integrating the slider into the rail system. The slider moves along guide rails within the base member, merging the pressing function with the guiding function, thereby facilitating drawer pull-out while avoiding excessive complexity through structural integration
Solution Approach 2:
The patent introduces a control rod with a hook portion as an intermediary component between the slider and the base member. The hook portion engages with the step path on the base member to control the slider's movement, enabling stable elastic force accumulation and release without requiring complex direct connection mechanisms
2Reliability
If the hook portion moves stably through stroke and step paths, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent divides the movement path of the hook portion into distinct segments: a stroke path for linear movement and a step path for engagement control. The base member includes guide rails that segment the motion into controlled phases, ensuring stable movement and reliable engagement without requiring overly complex continuous guidance mechanisms
Solution Approach 2:
The hook portion is designed with a curved surface that complements the step path geometry. This curved design allows smooth transitions between engagement and disengagement states, enhancing reliability by ensuring stable contact and force transfer while maintaining a relatively simple structural form
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 stable and efficient drawer pull-out operations by ensuring the hook portion's stable movement and elastic force accumulation, enhancing the drawer's ease of use and reliability.
Implementation Method 1
the slider accumulates elastic force through the stretching of the elastic member, and the slider is ejected by the elastic force of the elastic member
Implementation Method 2
The control rod comprises a hook portion with a curved surface at a tail end thereof so that the hook portion has elastic recovery force. When the hook portion deviates from the step path, the elastic restoring force of the hook portion rebounds the hook portion to the step path
Data Source
AI summary
A slide rail assembly includes a spring pressure device set including a base member with a stroke path and a step path, an elastic member, a slider and a control rod, and a slide rail including a first rail and a second rail with an activating member. The control rod moves on the stroke path and step path, allowing the slider to store elastic force through the stretch of the elastic member, and the slider to pop up through the elastic force of the elastic member. The spring pressure device set is installed on the first rail. When the second rail is received in the first rail, the activating member drives the slider and the control rod is locked at the base member. When the activating member is pushed, the control rod is unlocked, and the elastic member pops the slider out of the second rail.