Self-Locking Telescopic Door Railing for High-Speed Curtain Folding
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Solution Overview
Problem
Telescopic door railings with torsion springs can cause injuries due to automatic folding at high speeds, especially when the curtain end is swinging with hard objects, or damage to the curtain body from collisions with hard or sharp objects during the folding process.
Innovation Solution
A self-locking base with a pivot member and a self-locking mechanism that locks the pivot member when it reaches a predetermined speed, incorporating a ratchet groove, pawl, and elastic member to control the curtain's folding speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the torsion spring is used to generate rotational elastic force for automatic curtain folding, then the curtain can be automatically folded and the pivot speed is accelerated, but the curtain folds at high speed causing injuries to human body and damage to the curtain body
Solution Approach 1:
The patent applies preliminary anti-action by introducing a self-locking mechanism that activates before the high-speed folding can cause harm. The centrifugal force generated during rapid rotation automatically triggers the locking mechanism, which then engages the ratchet groove to prevent further rotation, thus counteracting the harmful effect before it can manifest
Solution Approach 2:
The patent converts the harmful centrifugal force generated during high-speed folding into a beneficial triggering mechanism for the self-locking system. The centrifugal force that would normally cause dangerous rapid motion instead serves to activate the pawl and engage the ratchet groove, transforming the harmful effect into the activation signal for safety protection
2Ease of operation
If the curtain end is left unfixed during unfolding, then the curtain can be freely adjusted to appropriate length, but releasing the curtain end causes automatic folding at faster speed due to elastic force release
Solution Approach 1:
The patent applies self-service by designing a system where the curtain automatically triggers its own locking mechanism through the centrifugal force generated during rapid folding. The elastic member and pawl work together in a self-activating manner, requiring no additional control input from the user, thus maintaining ease of operation while preventing dangerous speed
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
Prevents automatic folding at high speeds, thereby avoiding injuries and damage to the curtain body by ensuring controlled folding through the self-locking mechanism.
Implementation Method 1
one end of the first elastic member is fixed, and the other end is connected to the free end of first pawl, and when the pivot member pivots in the direction of curtain folding at or beyond the predetermined pivot speed, the centrifugal force generated exceeds the load of the first elastic member
Implementation Method 2
when the pivot member pivots in the direction of curtain folding at or beyond the predetermined pivot speed, the centrifugal force generated exceeds the load of the first elastic member, so that the first pawl swings to fit with the first ratchet groove
Implementation Method 3
a torsion spring provided inside the rotating drum generates rotational elastic force to make the rotating drum rotate around its own axis in one direction, so that the rotating drum can fold the curtain body and the rotating drum that rotates in the direction of curtain unfolding can drive the torsion spring to compress and store force
Data Source
AI summary
The present invention discloses a self-locking base and a telescopic door railing having the same, and the self-locking base is pivotably provided with a pivot member that is fixedly connected to a rotating drum, and is also provided with a self-locking mechanism which locks the pivot member through the self-locking base when the pivot member rotates in the direction of curtain folding at or beyond a predetermined speed. Compared with traditional ones, effectively avoiding the injury to the human body caused by the swinging curtain during the automatic folding process, or damage to the curtain body caused by collision with hard or sharp objects during swinging.