Pivoting Lever Roller Shutter Stop Device
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Solution Overview
Problem
Conventional roller shutter stop devices obstruct light and reduce brightness by allowing the final slat to project from the side surfaces, and existing solutions do not provide optimal control over the winding movement for maximum opening and closing.
Innovation Solution
A pivoting lever mechanism with a protrusion that moves inside the guide rail to block the final slat during ascent, allowing total concealment when closed and total erasure when open, integrated with a support and return means to ensure smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stop device allows the final slat to project from the side surfaces, then the winding movement is limited, but the light is obstructed and brightness is reduced
Solution Approach 1:
The stop device incorporates a pivoting lever that can rotate between a first position (protrusion extends beyond the lower longitudinal edge to limit winding) and a second position (protrusion retracts to allow maximum opening). This dynamic adjustment resolves the contradiction by enabling the system to switch between limiting winding movement and maximizing light transmission depending on the operational state.
Solution Approach 2:
The position of the protrusion relative to the bottom slat is changed by pivoting the lever mechanism. When the lever is in the first position, the protrusion extends beyond the lower longitudinal edge to prevent over-winding. When the lever pivots to the second position, the protrusion retracts, allowing the bottom slat to be completely retracted for maximum brightness. This parameter change (position of protrusion) directly resolves the contradiction between winding limitation and light transmission.
2Reliability
If the stop device blocks the bottom slat during ascent, then the winding is limited, but the opening is not maximum
Solution Approach 1:
The pivoting lever mechanism dynamically adjusts the protrusion position based on operational needs. During the ascent phase, the lever is in the first position where the protrusion extends beyond the lower longitudinal edge to block the bottom slat and limit winding. During the fully open state, the lever pivots to the second position where the protrusion retracts, allowing the bottom slat to be completely retracted. This dynamic positioning resolves the contradiction between winding limitation and maximum opening extent.
Solution Approach 2:
The stop device operates periodically, switching between two distinct states: the first position (protrusion extends) during ascent to limit winding, and the second position (protrusion retracts) during the fully open state to maximize opening. This periodic switching between positions allows the system to satisfy both contradictory requirements at different times in the operational cycle.
3Length of moving object
If the protrusion extends beyond the lower longitudinal edge, then the bottom slat can be completely retracted, but the winding control is reduced
Solution Approach 1:
The lever mechanism dynamically positions the protrusion based on the operational phase. When the lever is in the second position, the protrusion does not extend beyond the lower longitudinal edge, allowing the bottom slat to be completely retracted for maximum brightness. When the lever pivots to the first position, the protrusion extends to engage with the guide element and limit further winding. This dynamic repositioning resolves the contradiction between complete retraction and winding control.
Solution Approach 2:
The stop device incorporates a feedback mechanism where the protrusion's position relative to the guide element determines the operational state. When the protrusion extends beyond the lower longitudinal edge and contacts the guide element, it provides feedback that the maximum opening has been achieved, triggering the lever to pivot to the first position to limit further winding. This feedback loop resolves the contradiction by automatically switching between retraction and winding control modes.
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 maximum opening and closing of the roller shutter while maintaining maximum brightness or darkness inside the room without obstructing light, using a mechanism that pivots between 'low' and 'high' positions to control the protrusion's alignment with the guide element.
Implementation Method 1
a pivoting lever, when the stop device is inserted, about a horizontal axis perpendicular to the longitudinal axis of said housing and comprising at least one protrusion which, when the stop device is inserted, moves inside the associated guide track
Data Source
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AI summary
The present invention relates to a stop device (1) for a roller shutter (2) comprising a curtain (3) formed of a plurality of horizontal slats, including a bottom slat (4), articulated with each other and whose lateral ends move vertically inside guide rails (5) provided at their upper end with a guide element (6) remarkable in that it comprises, at each of the lateral ends of the bottom slat (4), a lever (10) inserted in part in an internal housing of said bottom slat (4), pivoting about a horizontal axis (11) perpendicular to the longitudinal axis of said housing and comprising at least one projection (14) moving inside the associated guide rail (5) and adapted to come against the guide element (6) to block the bottom slat (4), the lever (10) pivoting between a "low" position and a "high" position.