Motorized Shutter Locking Lever for Manual Disengagement
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Solution Overview
Problem
Motorized swing shutters face challenges in synchronizing the movement of two leaves and require a means to disengage motorization for manual operation due to unforeseen obstacles and potential system breakdowns, making it difficult to anticipate and implement adequate response scenarios.
Innovation Solution
A mechanical configuration using a flexible blade lever that securely locks or unlocks the motor and drive arms, allowing for easy disengagement of motorization, featuring a rotatable lever with specific shapes and dimensions that align and lock the arms coaxially, enabling mechanical power transmission and disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If motorized drive means are used to automate shutter operation, then productivity and ease of operation are improved, but reliability decreases due to potential motorization failure and inability to operate manually
Solution Approach 1:
The system dynamically switches between motorized operation mode and manual operation mode through the disengagement mechanism. The control arm can be selectively coupled or decoupled from the motorized shaft, allowing the system to adapt its operational characteristics based on conditions - automated when functional, manual when needed
Solution Approach 2:
The patent implements a mechanism to discard the motorized drive connection when failures occur, allowing manual operation. The disengagement mechanism enables the user to separate the control arm from the motorized shaft, effectively 'discarding' the failed motorized connection and recovering manual operational capability
2Reliability
If a robust locking mechanism is used to secure motor and drive arms, then reliability is improved, but device complexity increases
Solution Approach 1:
The locking mechanism is segmented into distinct functional components: the control arm with its longitudinal opening, the motorized shaft with transverse opening, and the engagement mechanism involving arms and notches. This segmentation allows each component to be simple in itself while collectively providing robust locking functionality
Solution Approach 2:
The patent uses intermediary elements to achieve reliable locking without complex mechanisms. The notches in the arms act as intermediaries that guide and secure the alignment between the control arm and motorized shaft. The blocking arm and elastic element serve as intermediaries to maintain engagement or allow disengagement through simple mechanical means
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
This solution simplifies the mechanical structure, enhances robustness, and allows for efficient manual operation of shutters by dissociating the motor and drive arms, ensuring reliable operation and synchronization of shutter movements.
Implementation Method 1
a flexible blade lever (4) mounted movable relative to the drive and motor arms and in contact with one of said arms
Data Source
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AI summary
Motorized drive device for at least one leaf rotating around a vertical axis between two stop positions, a first closing position at least partially obstructing a surface delimiting an opening in a wall and a second opening position clearing said surface and pressing the leaf against said wall, comprising a motorized rotating shaft (3) connected by means of a control arm to each leaf, said control arm comprising: - a drive arm (1) mounted freely at one of its ends on the motorized rotating shaft (3) and whose other end is connected to the leaf; - a drive arm (2) driven in rotation by said motorized rotating shaft (3); and - means for locking/unlocking the drive arm (2) to the drive arm (1).The locking/unlocking means comprise: - a lever (4, 40, 50) with a flexible blade mounted movable relative to the drive arms (1) and motor (2) and in contact with one of said arms (1, 2); - means for securing the motor arm (2) to the drive arm (1) by cooperation of shapes of the lever (4, 40, 50) and the arms (1, 2), said securing means being actuated in a predetermined position of the lever (4, 40, 50).