Bed rail locking system and method
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Solution Overview
Problem
Existing bed rail systems fail to efficiently secure and stabilize handrails for users getting in and out of bed, particularly in various bed types and configurations, and lack a reliable mechanism for easy assembly and disassembly.
Innovation Solution
A rail assembly system with a locking mechanism using a stopper and push pin configuration that allows for secure attachment and disengagement of bar assemblies, utilizing a stopper to prevent tabs from being pushed or retracted, ensuring the assemblies remain locked together.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism is used to secure bar assemblies together, then the stability and security of the handrail is improved, but the device complexity increases
Solution Approach 1:
The locking mechanism is divided into separate functional components: a stopper component that prevents tab movement, a push pin component that engages with the stopper, and bar assembly components. This segmentation allows each component to perform its specific function independently, achieving reliable locking without requiring a complex integrated mechanism.
Solution Approach 2:
The push pin and stopper are designed to automatically engage and disengage through simple user interaction. When the push pin is pressed, it automatically retracts to allow tab movement; when released, spring force automatically pushes it forward to engage the stopper and lock the assembly. This self-service mechanism reduces the need for additional locking components.
2Reliability
If a secure locking mechanism is implemented, then the reliability of the connection is improved, but the ease of operation for assembly and disassembly deteriorates
Solution Approach 1:
The locking mechanism utilizes spring force to automatically engage the push pin with the stopper, and relies on simple tab geometry to guide assembly. Users only need to press the push pin to disengage, rather than manipulating multiple locking components. This self-service design maintains connection security while dramatically simplifying operation.
Solution Approach 2:
Instead of requiring users to actively engage a lock, the design inverts the approach: the mechanism is already locked by default through spring force, and users only need to apply a simple releasing action (pressing the push pin) to disengage. This inversion makes the commonly needed action (disassembly) simpler than the locking action.
3Adaptability or versatility
If the bed rail system is designed to accommodate various bed types and configurations, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The bar assemblies are designed with standardized components and dimensions that can be configured for different bed types (hospital beds, home beds, various mattress thicknesses). The universal locking mechanism works the same way regardless of the specific bed configuration, allowing one design to serve multiple functions and applications without increasing complexity.
Data Source
AI summary
A rail assembly comprising a locking assembly having a first body that defines a first body cavity and a pair of first body coupling holes, a second body that defines a second body cavity and a pair of second body tab holes, and a push pin disposed within the second body cavity. The push pin comprising a spring and tabs disposed within the second body cavity such that the tabs are configured to respectively extend through the first body coupling holes and through the second body tab holes. The locking assembly includes a stopper configured to be disposed proximate to or engaging the spring and/or tabs of the push pin such that the tabs of the push pin are physically prevented from being fully or partially pushable or retractable within the first body coupling holes and second body tab holes such that the first and second bodies are locked together and prevented from being disengaged, de-coupled or un-locked via the push pin.