Blind Tilt Adjustment Assembly via Cord Actuation
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Solution Overview
Problem
Conventional tilting blind assemblies for windows and doors, both mounted on frames and encapsulated within insulated glass units, lack efficient tilt and raising/lowering control mechanisms, making them difficult to operate and manufacture.
Innovation Solution
A blind assembly with an elongated headrail, guide members, tilt baskets, and cords that allow for adjustable tilt angles of blind slats through an actuator, enabling smooth tilting and raising/lowering operations by moving the tilt baskets along the guide members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional tilting blind assemblies are mounted on window frames or encapsulated within IG units, then the blind assembly can be installed in windows and doors, but the tilt and raising/lowering control structures are difficult to operate and manufacture
Solution Approach 1:
The blind assembly is divided into separate functional modules: a headrail assembly containing the actuator and cord mechanism, tilt baskets that hold slats, and guide members that direct cord movement. This segmentation allows each component to perform its specific function independently, simplifying the overall control structure while improving ease of operation and manufacturing
Solution Approach 2:
The system uses dynamic cord length adjustment through the actuator mechanism to control both tilting and raising/lowering operations. The cords can change length dynamically to achieve different blind positions and tilt angles, replacing complex mechanical linkages with a more operable dynamic system
2Ease of manufacture
If conventional tilting blind assemblies use traditional control mechanisms, then the structure can be simplified, but the operation becomes difficult and manufacturing efficiency decreases
Solution Approach 1:
By segmenting the control system into modular components (actuator, cords, tilt baskets, guide members), each part can be manufactured separately using standardized processes, improving manufacturing efficiency while maintaining ease of operation through consistent modular assembly
Solution Approach 2:
The actuator mechanism serves multiple functions: it controls cord length for raising/lowering operations and adjusts cord differential length for tilting operations. This multi-functionality simplifies the manufacturing process by using a single mechanism for multiple control tasks, while maintaining ease of operation
3Adaptability or versatility
If the blind assembly uses a complex control structure, then the tilt and raising/lowering functions can be achieved, but the device becomes difficult to manufacture and operate
Solution Approach 1:
The complex control functions are extracted and implemented through a simplified cord-based mechanism guided by guide members. The tilt and raising/lowering controls are achieved by selectively adjusting cord lengths, extracting the essential control functions from complex mechanical structures to a more manageable system
Solution Approach 2:
Guide members act as intermediaries between the actuator and the tilt baskets, directing cord movement to achieve precise tilting and raising/lowering control. These intermediary components simplify the control structure by providing clear mechanical guidance without requiring complex linkages
Data Source
AI summary
A blind assembly includes a headrail, a guide member carried by the headrail and defining a channel therethrough, a tilt basket received within the channel, first and second cords operatively engaging a number of blind slats and extending from the number of slats upwardly through the tilt basket with the first cord coupled to the guide member adjacent to one terminal end of the channel and the second cord coupled to the guide member adjacent to an opposite terminal end of the channel, and an actuator to cause relative movement between the tilt basket and the elongated guide member along the channel to adjust a tilt angle of the number of slats between a full forward tilt with the tilt basket abutting one terminal end of the channel and a full rearward tilt with the tilt basket abutting the opposite terminal end of the channel.