Hinged Window Drive Coupling for Motorized and Hand-Crank Operation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing window drive systems lack the ability to seamlessly switch between motorized and manual operation without requiring specific user knowledge or access to automation control devices, especially when the motorized portion becomes disabled.
Innovation Solution
The drive system incorporates a linkage driver, driveshaft, and output shaft aligned along a common axis, with a motor coupling apparatus and hand crank coupling apparatus that can selectively couple or decouple to allow switching between motorized and manual operation, using a selector mechanism to move components along the axis and engage/disengage the hand crank gear, enabling operation without automation control devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a motor apparatus is used to operate the window assembly, then automation and convenience are improved, but the system becomes unable to operate manually when the motorized portion becomes disabled
Solution Approach 1:
The drive system employs a dynamic coupling mechanism that allows the hand crank gear to be selectively engaged or disengaged from the drive shaft. A selector mechanism moves the hand crank gear along the drive shaft axis to establish or break the operational connection, enabling the system to switch between motorized and manual modes based on operational needs or motor availability.
Solution Approach 2:
The drive shaft is designed to serve multiple functions: it can be driven by the motor apparatus through the motor coupling apparatus, or it can be manually rotated by the hand crank gear. This multi-functionality ensures the window assembly can operate in either mode, providing versatility and backup capability when the motorized portion becomes disabled.
2Adaptability or versatility
If separate motorized and manual components are provided, then operational versatility is improved, but the system complexity increases
Solution Approach 1:
The motor coupling apparatus and hand crank coupling apparatus are integrated around a common drive shaft. Both the motor output shaft and the hand crank gear connect to the same drive shaft through selective coupling mechanisms, merging the motorized and manual drive paths into a single unified system rather than requiring separate complete drive trains.
Solution Approach 2:
The drive shaft acts as an intermediary element that receives power from either the motor apparatus or the hand crank gear. The selector mechanism serves as a mediator that controls which power source is transmitted to the linkage driver, simplifying the switching process between operational modes.
3Adaptability or versatility
If the hand crank gear is always engaged with the drive shaft, then manual operation is always available, but the motorized operation becomes interfered with
Solution Approach 1:
The coupling between the hand crank gear and drive shaft is made dynamic rather than static. The selector mechanism enables the hand crank gear to be positioned in different locations along the drive shaft axis, allowing it to be disengaged during motorized operation and engaged during manual operation, ensuring smooth motorized operation without interference while maintaining manual availability when needed.
Data Source
AI summary
Hinged window drive systems and window assemblies incorporating them provide for a combination of powered or motorized operation in addition to manual operation using a hand crank, with the opportunity for a user to switch between motorized operation and manual operation as needed.