Window Screening Device with Motor Release Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Motorized window shading devices often lack functionality for precise manual operation and accurate positioning, limiting their usability, especially for hard-to-reach windows like roof windows and skylights.
Innovation Solution
A window screening device with a transversal profile driven by an electrical motor, equipped with position sensing encoders and end position sensors, allowing for both motorized and manual operation, enabling precise positioning and speed control, and featuring release means to disengage the motor for manual displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If motorized operation is implemented, then automation and convenience are improved, but the ability for manual operation and flexibility are worsened
Solution Approach 1:
The patent implements a dynamic engagement mechanism that allows the system to switch between motorized and manual operation modes. The engagement means can be selectively engaged or disengaged based on operational needs, enabling the screening device to adapt between automated control and manual adjustment, thus resolving the contradiction between automation and manual flexibility.
Solution Approach 2:
The patent changes the operational state parameter of the engagement means between engaged and disengaged positions. When engaged, the motor drives the screening device automatically; when disengaged, manual operation is enabled. This parameter change allows the system to transition between different operational modes, resolving the contradiction between automation and manual capability.
2Measurement precision
If end position sensors are used, then stopping accuracy at limits is improved, but the ability to position at intermediate points is worsened
Solution Approach 1:
The patent implements a feedback mechanism using position means that continuously provides position information to the control means. This feedback allows the control system to determine not only when end positions are reached (via end position sensors) but also to control the screening device to stop at any intermediate position by comparing the desired position with the actual position feedback, thus resolving the contradiction between end position accuracy and intermediate positioning capability.
3Measurement precision
If position means continuously detect position, then precise positioning control is improved, but system complexity and calibration requirements are worsened
Solution Approach 1:
The patent implements a self-calibration mechanism where the control means automatically references the end position sensor signals to recalibrate the position means after manual operation or mode switching. This self-service calibration process eliminates the need for manual calibration procedures, reducing system complexity and making the high-precision position detection system easier to maintain while preserving measurement accuracy.
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
Disclosed is a screening device (1) for a window (2). The screening device (1) comprises a drive unit (3) including a transversal profile (4) arranged to run along guide means (5) extending transversally at the longitudinal ends of the transversal profile (4), wherein the transversal profile (4) comprises an electrical motor (6) arranged to move the transversal profile (4) along the guide means (5) by means of engaging means (7) arranged to engage the guide means (5). The transversal profile (4) further comprises position means (8) arranged for detecting at least a motorized change of the position of the transversal profile (4) in relation to the guide means (5) and at least one end position sensor (9) for detecting an end position of the guide means (5). The screening device (1) also comprises screening means (10) including a first end (11) being connected to the transversal profile (4) and a second end (12) comprising connection means (13) for being fixed at an end of the guide means (5) and release means (14) arranged to selectively engage or disengage the electric motor (6) from the guide means (5) to enable both manual and motorized displacement of the transversal profile (4) in relation to the guide means (5). Furthermore, the screening device (1) comprises control means (15) arranged for controlling the operation of the electrical motor (6) in accordance with input from the position means (8) and the end position sensor (9). A method for operating an electric screening device (1) for a window (2) and use of a screening device (1) is also disclosed.