Spring Roller Blind Tension Adjustment Mechanism
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Solution Overview
Problem
Existing spring-operated roller blind systems are not easily releasable for mounting or removal from mounting brackets, limiting user convenience and DIY applicability.
Innovation Solution
A spring-operated roller blind system with a tension spring connected to a central rod and a tension adjusting mechanism, featuring an adjusting wheel and spring, allows for easy releasable coupling and optimal tension adjustment, eliminating the need for a mounting profile between brackets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a spring-operated roller blind system uses a traditional mounting mechanism, then the structure is stable and reliable, but the mounting and removal process becomes complex and difficult for users
Solution Approach 1:
The mounting mechanism is segmented into separate components: a bracket connector attached to the roller blind and a mounting bracket fixed to the window frame. This separation allows the roller blind to be easily mounted by connecting the bracket connector to the mounting bracket, and easily removed by disconnecting them, without requiring complex integrated mounting structures or professional installation
Solution Approach 2:
The tension adjusting mechanism is extracted as a separate functional component with an adjusting wheel and adjusting spring, independent from the basic mounting structure. This allows users to easily adjust the spring tension after installation without affecting the mounting itself, simplifying the overall mounting process while maintaining operational flexibility
2Ease of operation
If a tension adjusting mechanism with adjusting wheel and spring is added, then optimal tension adjustment is achieved, but the device complexity increases
Solution Approach 1:
The adjusting spring works automatically with the adjusting wheel to provide self-regulating tension adjustment. When the user rotates the adjusting wheel, the adjusting spring automatically engages with first engaging means and second engaging means to tighten or relax the tension spring, eliminating the need for complex mechanical adjustment mechanisms or professional calibration
Solution Approach 2:
The adjusting spring is nested within the bracket connector structure, with the first engaging means and second engaging means integrated into the same component housing. This nested arrangement minimizes the space required for the tension adjustment mechanism while maintaining full adjustability, preventing light gaps and keeping the overall device compact
3Shape
If the adjusting wheel and adjusting spring are arranged coaxially on the bracket connector, then the design becomes compact and light gap is avoided, but the manufacturing precision requirements increase
Solution Approach 1:
The adjusting wheel and adjusting spring are merged into a single coaxial assembly mounted on the bracket connector. This combination allows both components to share the same mounting interface and rotational axis, simplifying the manufacturing process while achieving a compact design that eliminates light gaps between components
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 easy mounting and removal of the roller blind, with a compact design that maintains optimal tension, suitable for DIY market applications and user-friendly operation.
Implementation Method 1
a tension spring (5) fixedly connected to the central rod (6) and to the roller shaft (4)
Implementation Method 2
a tension adjusting mechanism (10) for adjusting the tension of the tension spring (5), wherein the tension adjusting mechanism (10) comprises an adjusting wheel (11) and an adjusting spring (15) for adjusting the rotational position of the central rod (6)
Data Source
AI summary
A roller blind system, comprising a roller blind having a roller shaft through which a central rod extends and to which a flexible sheet member is attached. The roller blind is provided with two bracket connectors arranged for releasable coupling to mounting brackets. The roller blind is spring operated and comprises a tension spring fixedly connected to the central rod and to the roller shaft and a tension adjusting mechanism for adjusting the tension of the tension spring. The tension adjusting mechanism comprises an adjusting wheel and an adjusting spring for adjusting the rotational position of the central rod, a first bush part arranged on the adjusting wheel for pushing the adjusting spring in a relaxed configuration and a second bush part connected to the central rod for pushing the adjusting spring in a tightened configuration.