Curtain Drive Assembly With Tool-Free Pivot Lock for Curved Tracks
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Solution Overview
Problem
Existing window curtain driving assemblies for curved tracks are inconvenient to assemble, disassemble, and maintain due to the need for tools and fasteners like screws, making them time-consuming and labor-intensive.
Innovation Solution
A window curtain driving assembly with a pulley driving assembly pivotally connected to a main body, featuring a locking mechanism with a slot and curved hole for secure attachment without screws, allowing for easy assembly, disassembly, and maintenance, and adaptable to both curved and straight tracks through auxiliary pulley sets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pivot member such as a screw is used to connect the moveable body with the arm, then the connection is secure and reliable, but the assembly and disassembly require tools and are time-consuming
Solution Approach 1:
The connection structure is segmented into a locking part on the arm and a locked part on the moveable body, allowing independent assembly of components without requiring fasteners. The locking part includes a slot and curved hole that receive the locked part's block and rod, enabling tool-free assembly while maintaining secure connection.
Solution Approach 2:
The pivot member (screw) is completely removed from the connection mechanism. Instead of using a screw to pivotally connect the moveable body with the arm, the patent extracts this fastener and replaces it with a direct pivotal connection through the locking and locked parts that engage without any fasteners.
2Reliability
If a pivot member such as a screw is used to connect the moveable body with the arm, then the connection is secure and reliable, but the disassembly and maintenance are inconvenient and require tools
Solution Approach 1:
The connection structure is segmented into separable locking and locked parts that can be easily engaged and disengaged. The locking part with slot and curved hole allows the locked part (block and rod) to be independently assembled and disassembled without tools, facilitating convenient maintenance while maintaining secure connection during operation.
3Loss of time
If the pulley driving assembly is pivotally connected to the main body without fasteners, then the assembly and disassembly are time and labor-saving, but the connection may be less secure
Solution Approach 1:
The fastenerless connection is segmented into a locking part with specific geometric features (slot and curved hole) and a locked part with corresponding features (block and rod). This segmentation allows the components to engage precisely and securely through their geometric interlocking, achieving reliable connection without fasteners.
Solution Approach 2:
The slot and curved hole in the locking part act as intermediaries that guide and constrain the block and rod of the locked part. This intermediary structure ensures proper alignment and secure engagement of the pivotal connection without requiring fasteners, maintaining connection reliability while enabling easy assembly.
4Stability of the object's composition
If the pulley driving assembly is fixed in a given direction using latch bars and mounting grooves, then the assembly is stable for straight tracks, but it reduces adaptability to curved tracks
Solution Approach 1:
The pulley driving assembly incorporates both fixed and movable connection mechanisms. The auxiliary pulley set uses fixed latch bars and mounting grooves for stable straight-track operation, while the main pulley driving assembly maintains pivotal connectivity for curved-track adaptation. This dynamic combination allows the system to switch between fixed and movable connection modes based on track requirements.
Solution Approach 2:
The window curtain driving assembly is designed with multi-functionality to accommodate both straight and curved tracks. The auxiliary pulley set with latch bars provides stable fixed-direction mounting for straight tracks, while the main pulley driving assembly with pivotal connection enables curved track adaptation, making the overall system universal for different track configurations.
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
The solution enables quick and tool-free assembly and disassembly, facilitates smooth operation on curved tracks, and allows for use on straight tracks with enhanced smoothness, reducing user effort and time while maintaining functionality.
Implementation Method 1
at least one pulley driving assembly pivotally connected to the main body
Implementation Method 2
A locking part is disposed on a top of the main body. The locking part consists of a slot, an opening tapered inward and located at one side of the slot, and a curved hole connected to an inner end of the opening and communicating with the opening
Implementation Method 3
The pulley driving assembly consists of a pulley mount and two pulleys
Implementation Method 4
The pulley mount is oriented toward a given direction by a second latch bar on one side of the pulley driving assembly and a first latch bar of the main body being mounted into a mounting groove of the auxiliary pulley set
Data Source
AI summary
A window curtain driving assembly is revealed. A pulley driving assembly is pivotally connected to a main body. Pulleys disposed on the pulley driving assembly slid in a curtain track. Thereby the window curtain driving assembly rotates along curves of the window track so that it can also be applied to the curved window track. An auxiliary pulley set is mounted and fixed on a top of the main body. The pulley mount is oriented toward a given direction by the second latch bar on one side of the pulley driving assembly being mounted in the auxiliary pulley set. Thus the window curtain driving assembly can also be applied to a straight curtain track for extension or retraction of a curtain.