Roller Shutter End Piece Slide Guide for Vibration Control
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Solution Overview
Problem
High-speed roller shutters with rigid shutter elements face issues of torque, bending moment, and noise due to the interaction of end pieces with the coiling device and side rails, leading to potential damage and instability during opening and closing.
Innovation Solution
Incorporating a plane gliding section on the end pieces that are thicker than the concave sections, allowing them to be guided on a slide guide, which acts as a counterpoint to absorb forces and reduce vibrations, and connecting the lifting device to the slide guide to distribute these forces effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If end pieces are fixed to lifting device or carrying strap for high-speed operation, then opening and closing speed is improved, but torque and bending moment on end pieces increases causing potential damage
Solution Approach 1:
The patent introduces a slide guide as an intermediary component between the end piece and the side rail. The slide guide receives the end piece during transition and guides it smoothly, absorbing torque and bending moment forces that would otherwise directly stress the end piece connection to the lifting device. This mediator protects the connection while enabling high-speed operation.
Solution Approach 2:
The slide guide acts as a cushioning element positioned in advance at the transition zone between side rail and coiling device. It prepares for and absorbs the冲击 forces and torques that occur during high-speed transitions, preventing these forces from reaching the end piece connection and causing damage.
2Productivity
If end pieces transition from coiling device to side rail at high speed, then productivity is improved, but vibrations and noise increase
Solution Approach 1:
The slide guide serves as a mediator that smooths the transition between the coiling device and side rail. It provides a controlled gliding path for the end piece, reducing abrupt movements and impacts that generate vibrations and noise, while still allowing high-speed operation for improved productivity.
Solution Approach 2:
The slide guide introduces a dynamic gliding mechanism that adapts to the motion of the end piece during high-speed transitions. This dynamic interaction allows the system to maintain high productivity while controlling vibrations and noise through the controlled movement along the slide guide surface.
3Ease of operation
If end pieces run over inner or outer radius of side rail opening, then ease of operation is improved, but stability deteriorates due to varying angles
Solution Approach 1:
The slide guide acts as an intermediary that standardizes the transition path of the end piece. Instead of running over the varying inner or outer radii of the side rail opening which cause angle variations, the end piece glides along the slide guide at a consistent angle, maintaining stability while ensuring smooth ease of operation.
Data Source
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AI summary
The invention relates to a roller shutter for opening and closing a doorway (12) having a door blade (11), the door blade (11) comprises several rigid shutter elements (13) which are hinged with each other, the shutter elements (13) are guided by side rails (18) at opposed sides of the doorway (12), wherein each shutter element (13) provides an end piece (19) at each horizontally spaced end of the shutter element (13) for spacing layers of rolled up shutter elements (13) apart from each other, each end piece (19) has at least one concave section (27) for coiling the end pieces (19) on a coiling device (14) and/or in layers on top of each other. For reducing the risk of weakening a connection between the end piece (19) and the shutter element (13), for reducing noise and/or vibrations during the opening and/or closing of the door way and/or to increase the stability of the roller shutter the roller shutter (10) is characterized in that at least some of the end pieces (19) having at least one plane gliding section (28), the plane gliding section (28) is arranged for interacting with a slide guide (36) of the side rail (18) for leading the end pieces (19) into and/or out of the side rails (18).