Roll-up Shutter Motorized Assembly Arresting Device Reset
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing integrated assemblies for motorized roll-up shutters face challenges in easy reset of the arresting device upon compensating spring failure, require complex intervention with the geared motor, and lack automatic disconnection of power supply when the arresting device is activated, leading to potential uncontrolled shutter movements and increased production costs.
Innovation Solution
An integrated assembly that includes a geared motor, a torsion spring for load balancing, and an arresting device, where the arresting device is coupled with the geared motor and a microswitch to automatically disconnect power and facilitate easy reset, allowing the arresting device to be accessed without dismounting the geared motor, and reducing production costs by integrating components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the arresting device is directly coupled with the geared motor, then the structure is simplified, but the reset operation becomes complicated and requires intervention on the geared motor
Solution Approach 1:
The arresting device is segmented from the geared motor assembly, allowing independent access and reset operations. The arresting device can be accessed from the opposite side of the geared motor, enabling reset without dismounting the motor itself.
Solution Approach 2:
A microswitch is introduced as an intermediary component between the arresting device and the geared motor control system. The microswitch automatically disconnects power supply when the arresting device is activated, facilitating safe and easy reset operations.
2Reliability
If the arresting device is activated during compensating spring failure, then safety is improved, but the geared motor may be involuntarily actuated causing uncontrolled shutter movements
Solution Approach 1:
The microswitch provides feedback to the control system when the arresting device is activated. This feedback signal automatically disconnects the power supply to the geared motor, preventing involuntary actuation and uncontrolled shutter movements during safety events.
3Use of energy by moving object
If the compensating spring is automatically loaded during descending travel, then power consumption is reduced, but the system becomes more complex requiring precise loading mechanisms
Solution Approach 1:
The compensating spring is designed to automatically load itself during the descending travel of the roll-up shutter. The spring utilizes the gravitational force and mechanical energy from the shutter's weight to wind itself, eliminating the need for external loading mechanisms or additional power input.
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 quick and safe reset of the arresting device, prevents unintended motor operation during failures, and reduces production costs by simplifying the design and integration of components, ensuring reliable and safe motorized operation of roll-up shutters.
Implementation Method 1
The compensating spring is a torsion spring that is wound around said shaft, and is automatically loaded during the descending travel of the roll-up shutter, in such a way that the following ascending travel will require less power from the geared motor, it being assisted by said torsion spring that provides a lifting force when it is discharged
Implementation Method 2
a microswitch suitable for disconnecting the power supply of the geared motor when the striker is disengaged from said rod
Data Source
Figure 1~3A
Figure 2~3
Figure 4
AI summary
An integrated assembly for the motorized operation of a roll-up shutter (A) comprises a tubular shaft (10) with horizontal axis, wherein the roll-up shutter is externally fixed and rolled, and wherein a geared motor (20), an arresting device (30) and a set of compensating springs (40), which are disposed between said geared motor (20) and said arresting device (30), are housed.