Convertible Child Safety Seat Tether Strap Dual-Side Tension Indicator
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing tension indicators for vehicle child safety seat tether straps only provide visual indication in one orientation, which is inadequate for convertible seats that can be positioned in both forward and rearward facing positions, as they require tension indication in both orientations to ensure proper installation and safety.
Innovation Solution
A tether strap system with indicator portions on both sides of the strap that move between concealed and revealed positions based on tension, using elastic members or metal springs secured to the strap, ensuring visibility of tension status regardless of the strap's direction, allowing for secure installation in either seating configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-sided tension indicator is used on the tether strap, then the device complexity is reduced, but the indicator only provides visual indication in one orientation, making it inadequate for convertible seats that can be positioned in both forward and rearward facing positions
Solution Approach 1:
The tension indicator is divided into multiple independent indicator portions positioned on different sides of the tether strap. Each indicator portion can independently indicate tension status for its respective orientation, allowing the system to provide comprehensive indication for both forward and rearward facing positions without requiring a single complex mechanism
Solution Approach 2:
Multiple indicator portions are combined on a single tether strap system, with each portion positioned to be visible from different orientations. The elastic members and indicator portions work together as an integrated system that provides continuous tension indication regardless of seat orientation
2Adaptability or versatility
If the indicator portions are positioned to be visible from both sides of the strap, then the adaptability for different orientations is improved, but the device complexity increases due to additional indicator portions and elastic members
Solution Approach 1:
The elastic members serve multiple functions: they provide the mechanical force to move indicator portions and simultaneously act as the tensioning mechanism for the tether strap. The indicator portions serve dual purposes by indicating tension status while being positioned to be visible from multiple orientations
Solution Approach 2:
Instead of having a single indicator that tries to indicate in all directions, the solution inverts the approach by placing multiple simple indicators on different sides of the strap. Each indicator works independently in its own orientation, simplifying the individual component design while achieving comprehensive coverage
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 provides a reliable visual indication of adequate tension in both forward and rearward facing positions, ensuring the child safety seat is securely installed and reducing the risk of forward movement during collisions.
Implementation Method 1
One form of existing tension indication for straps is to make use of an elastic member with each end of the elastic member secured to a bight of a strap... Tension applied to the strap will result in the elastic member stretching and in turn straightening of the bend, bight or loop
Implementation Method 2
using elastic members or metal springs secured to the strap
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The invention relates to a convertible child safety seat (10) adapted to be positioned on a vehicle seat (8) in a forward facing position or a rearward facing position, comprising a seat portion for a child and a tether strap (11), wherein the tether strap (11) is secured to the child safety seat (10), wherein the tether strap (11) comprises connector means (17) adapted to secure the tether strap (11) to an anchorage location of the vehicle, wherein the tether strap (11) comprises length adjustment means (16) adapted to adjust the length of the tether strap (11), and wherein the tether strap (11) comprises indicator means adapted to come into view laterally to the seat portion if a required tension is applied to the tether strap (11) regardless if the child safety seat (10) is positioned on the vehicle seat (8) in a forward facing position or a rearward facing position.