Vehicle Window Blind Guide Rail Assembly for Low-Noise Folding
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Solution Overview
Problem
Conventional window blinds for vehicles cause vibration and noise when the shade curtain reciprocates and are bulky, making them inconvenient to transport and increasing transportation costs.
Innovation Solution
A window blind assembly with a main frame, connection units, rotary shaft, guide rails, a shade curtain supporter, and a driving unit that includes a motor, gear assembly, and wires to smoothly move the shade curtain along guide rails, reducing vibration and noise, and allowing for easy folding and transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional window blind is used to block light through the window, then privacy protection is improved, but vibration and noise occur when the shade curtain reciprocates
Solution Approach 1:
The guide rail is designed to be rotatable relative to the main frame, allowing the blind assembly to adapt its orientation dynamically. The connection unit enables the guide rail to rotate between a first position (parallel to window) and a second position (perpendicular to window), optimizing performance for different operational states and reducing vibration during shade curtain movement.
Solution Approach 2:
The orientation parameter of the guide rail is changed by rotating it between different positions. This parameter change allows the system to transition from a state where the guide rail is parallel to the window (for normal operation) to a state where it is perpendicular (for retraction and transport), thereby reducing vibration and noise during shade curtain reciprocation.
2Object-affected harmful factors
If a conventional window blind is used to block light through the window, then privacy protection is improved, but the assembly becomes bulky and inconvenient to transport
Solution Approach 1:
The guide rail and connection unit form a rotatable mechanism that allows the blind assembly to change its configuration dynamically. During normal use, the guide rail is positioned parallel to the window for effective light blocking. During transport, the guide rail rotates to a perpendicular position, enabling a compact folded state that reduces volume and improves convenience.
Solution Approach 2:
The guide rail is rotated from a horizontal orientation (parallel to window) to a vertical orientation (perpendicular to window), utilizing rotational movement in a different spatial dimension. This dimensional change enables the blind to transition between an extended operational state and a compact folded state, significantly reducing transport volume.
3Device complexity
If the guide rail is fixed in position, then structural simplicity is maintained, but the blind cannot be conveniently folded for transport
Solution Approach 1:
The connection unit incorporates a rotatable joint that allows the guide rail to pivot between positions. This dynamic feature adds minimal complexity to the structure while enabling the blind to be folded compactly for transport, significantly improving ease of operation during loading and storage without compromising structural integrity.
Data Source
AI summary
There is a need for a window blind assembly for a vehicle, in which vibration and noise are reduced when a shade curtain moves and which is convenient to be transported. The window blind assembly for a vehicle includes: a main frame; a pair of connection units arranged in the main frame; a rotary shaft rotationally arranged in the connection units; a pair of guide rails rotationally arranged in the connection units and formed with guide grooves; a shade curtain supporter movably coupled to the guide grooves of the pair of guide rails; a shade curtain including one side end portion connected to the rotary shaft and rolled into the rotary shaft, and the other side end portion connected to the shade curtain supporter and unrolled as the shade curtain supporter becomes apart from the rotary shaft; and a driving unit providing driving force to move the shade curtain supporter along the guide rail.