Safe Curtain Control Assembly Without Screws
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing curtain control assemblies with bead chains are either costly due to the use of fasteners, time-consuming to assemble, and pose a strangulation risk to children, while safer designs are complex and expensive to produce.
Innovation Solution
A curtain control assembly featuring a base with a cavity and stopping portions, a sleeve with a polygonal assembly rod, an elastic member, and a drive member with a second stopping flange, which securely engage without screws, allowing for easy assembly and preventing child strangulation by enabling rotation and axial movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fasteners are used to fix the bead chain base on the main body, then the assembly is secure, but the production cost increases and the assembly process becomes time-consuming
Solution Approach 1:
The invention extracts and eliminates the fasteners from the assembly system. The bead chain base is designed with a built-in limiting structure that directly engages with the main body cavity, removing the need for separate fasteners and enabling tool-free assembly while maintaining secure fixation.
Solution Approach 2:
The limiting structure is merged into the bead chain base itself, combining the fastening function with the base structure. This integration eliminates the need for additional fastening components and simplifies the assembly process into a single insertion motion.
2Reliability
If fasteners are used to fix the bead chain base, then the assembly is secure, but the production cost increases
Solution Approach 1:
The invention removes the fasteners from the bill of materials, eliminating their cost. The limiting structure is formed as an integral part of the bead chain base through molding, reducing component count and assembly costs while maintaining secure fixation.
Solution Approach 2:
The bead chain base serves multiple functions: it holds the bead chain, provides structural support, and contains the limiting structure for secure mounting. This multi-functionality eliminates the need for separate fastening components, reducing material costs and simplifying manufacturing.
3Object-affected harmful factors
If a safe design is implemented to prevent child strangulation, then safety is improved, but the structure becomes complicated and production cost increases
Solution Approach 1:
The invention extracts the safety function from complex mechanical restraint systems and implements it through a simple limiting structure that allows controlled movement. The bead chain base can rotate and move axially within the cavity, providing safety through design simplicity rather than complexity.
Solution Approach 2:
The invention introduces dynamic movement capabilities to the bead chain base, allowing it to rotate and move axially within the cavity. This dynamic design enables children to easily release the bead chain if it becomes tangled, providing safety through movement freedom rather than complex locking mechanisms.
4Object-affected harmful factors
If a safe design is implemented to prevent child strangulation, then safety is improved, but the assembly process becomes time-consuming
Solution Approach 1:
The invention removes complex safety mechanisms from the assembly process. The safety function is achieved through the simple limiting structure and natural movement capabilities of the bead chain base, which require no additional assembly steps or adjustments.
Solution Approach 2:
The limiting structure and movement capabilities are built into the bead chain base during manufacturing. The safety features are pre-configured in the design, requiring no additional assembly steps or adjustments during production, thus maintaining fast assembly times.
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 reduces assembly time and cost, ensures secure engagement without screws, and prevents child strangulation by allowing easy engagement and disengagement of the bead chain, while being applicable to various curtain components for reduced production costs.
Implementation Method 1
The elastic member is fit around the assembly rod of the sleeve and located between the first stopping flange of the sleeve and the second stopping flange of the drive member while two ends of the elastic member are against the first stopping flange of the sleeve and the second stopping flange of the drive member respectively
Data Source
AI summary
A safe curtain control assembly which does not require screws to assemble is revealed. The safe curtain control assembly includes a stopping portion located on a wall of a cavity of a base forming a raised structure, and a recessed area is formed by the wall of the cavity and the stopping portion. A sleeve, an elastic member and a drive member are mounted within the cavity of the base in turn. A second stopping flange of the drive member is positioned in the recessed area between the wall of the cavity and the stopping portion for preventing the sleeve, the elastic member, and the drive member assembled from being released. Thereby the base, the sleeve, the elastic member and the drive member are secured firmly without screws so as to save time and cost for each assembly.