Vertical Sliding Window Motorized Mechanism
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Solution Overview
Problem
Existing sliding window mechanisms, particularly for vertical sliding windows, require excessive physical effort to open and close and lack a balanced motorized system for efficient operation, with most designs utilizing single cable mechanisms that are inefficient and prone to jerky motion.
Innovation Solution
A sliding window mechanism employing two pinions coupled on the same axis, engaged with racks on opposite sides of the frame, providing balanced propulsion and incorporating a motorized or manual bevel gear system with rollers to reduce friction and include safety and control features like limit switches and a burglar alarm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single cable mechanism is used to move the sliding frame, then the device complexity is reduced, but the operation becomes jerky and requires excessive physical effort
Solution Approach 1:
The single cable mechanism is segmented into two separate cable mechanisms, one for each side of the sliding frame. Each cable is independently controlled by a motor, allowing smooth and balanced movement of the frame without jerky motions, while maintaining relatively simple overall structure
Solution Approach 2:
The manual cable pulling mechanism is replaced with a motorized system where two motors independently control two cables. This substitution eliminates the need for excessive physical effort while maintaining ease of operation through automated control
2Force
If a push-pull mechanism with a thick stiff cable is used, then the cable can move the sliding frame effectively, but the cable thickness and stiffness increase the device complexity and aesthetic appearance
Solution Approach 1:
The single thick cable is divided into two thinner cables, one for each side of the frame. Each cable operates independently with its own motor, providing sufficient force through distributed action while allowing for thinner, more aesthetically pleasing cable specifications
Solution Approach 2:
Instead of using a single cable that pushes and pulls the frame, the system uses two cables that independently pull each side of the frame. This inversion of the mechanism approach eliminates the need for thick stiff cables while maintaining effective force application
3Ease of operation
If a motorized balanced system with two pinions and racks is implemented, then smooth operation and reduced physical effort are achieved, but the device complexity increases
Solution Approach 1:
The balanced motorized system is segmented into two independent motor-cable mechanisms, each controlling one side of the sliding frame. This segmentation achieves smooth operation and reduced physical effort while keeping each individual mechanism module relatively simple
Solution Approach 2:
The two motorized cable mechanisms serve multiple functions: they provide balanced propulsion, enable smooth operation, reduce physical effort, and can be independently controlled for precise positioning. This multi-functionality justifies the added complexity by delivering multiple benefits from a unified system
4Shape
If the driving mechanism is hidden in a recess in the lower horizontal plank, then the non-mechanized appearance is maintained, but the device complexity increases
Solution Approach 1:
The motorized driving mechanisms are nested within recesses in the lower horizontal plank of the frame. The motors and cable mechanisms are housed within these recesses, allowing the mechanism to be concealed and maintaining the simple, non-mechanized appearance of the window frame while incorporating the necessary complex driving system
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 smooth, efficient operation of vertical sliding windows with reduced physical effort, enhanced safety through overload detection, and secure operation without the need for locking latches, maintaining a non-mechanized appearance.
Implementation Method 1
The driving mechanism of the sliding frame turns a left and a right pinions, which are teethed gearwheels that fit and engage the teethed racks
Implementation Method 2
incorporating a motorized or manual bevel gear system with rollers to reduce friction
Implementation Method 3
The left and the right pinions are coupled either with the same axle in the bevel gears option (named as the joint axle)
Data Source
AI summary
A driving mechanism for sliding a windowed frame guided by an outer frame. The sliding frame is attached to two vertical racks which engage with two pinions. The pinions are connected with a joint axle driven by a couple of engaged bevel gearwheels connected to a crank or to an electric motor. The joint axle with the pinions can be housed in a recess carved at the lower plank of a static window's frame.A compact motorized option in which each pinion is coupled with a gearbox and both gearboxes are driven by a central electric motor also can be housed entirely in the static window's recess.The motorized options also include: a control unit for controlling the direction and speed of the sliding, two limit switches for stopping the frame at highest and lowest positions, an electrical overload sensor which detects sudden sliding obstructions and a burglar alarm.