Child Safety Seat Support Tube Locking for Stable Height Adjustment
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Solution Overview
Problem
Conventional child vehicle safety seat support devices lack sturdiness due to only one lateral side having positioning holes for the height adjusting mechanism, compromising stability.
Innovation Solution
A support device with a positioning tube, support tube, and seat height adjusting unit, featuring multiple diametrically opposite positioning holes and through holes, and a spring-loaded actuator with protruding members to securely lock and adjust the positioning tube relative to the support tube, distributing loads evenly and allowing easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only one lateral side of the support member is formed with positioning holes, then the device complexity is reduced, but the sturdiness and stability of the support device deteriorates
Solution Approach 1:
The patent applies asymmetry by forming positioning holes on only one lateral side of the support member, creating an asymmetric structure that reduces complexity while maintaining functionality through the telescopic mechanism's inherent stability
Solution Approach 2:
The support member is telescopically disposed within the positioning tube, creating a nested configuration where the support member can slide in and out of the positioning tube. This nesting arrangement provides structural stability and sturdiness without requiring symmetric positioning holes on both sides, thereby resolving the contradiction between simplicity and reliability
2Reliability
If multiple diametrically opposite positioning holes are formed, then the load distribution and sturdiness are improved, but the device complexity increases
Solution Approach 1:
The patent applies local quality by concentrating multiple positioning holes on only one lateral side of the support member rather than distributing them symmetrically on both sides. This localized arrangement provides sufficient load distribution and sturdiness through the telescopic engagement while avoiding the complexity of bilateral hole formation
Solution Approach 2:
The patent transitions from a two-dimensional symmetric hole distribution (both sides) to a one-dimensional linear arrangement (single side), repositioning the positioning holes along the lateral side to achieve load distribution without increasing overall structural complexity
3Ease of operation
If a telescopic configuration is used, then the ease of operation for height adjustment is improved, but the stability and sturdiness deteriorate
Solution Approach 1:
The patent applies dynamics by implementing a telescopic configuration where the support member can move relative to the positioning tube, enabling dynamic height adjustment for ease of operation while maintaining stability through the engagement of positioning holes with corresponding protrusions at selected positions
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 sturdy and easy-to-operate support device by evenly distributing loads and allowing for secure locking and adjustment, enhancing the stability and usability of the child vehicle safety seat.
Implementation Method 1
The spring member is disposed in the mounting seat and applies a biasing force to the actuator
Data Source
AI summary
A support device includes a positioning tube to be connected to a child vehicle safety seat and formed with a plurality of positioning hole units. A support tube is sleeved telescopically on the positioning tube and is formed with a pair of through holes. A support base is sleeved on the support tube, and has a mounting seat disposed at a horizontal level corresponding to the through holes. A seat height adjusting unit includes an actuator that is mounted movably in the mounting seat, that is biased by a spring member, and that engages removably the through holes and a registered one of the positioning hole units to retain the positioning tube at a desired extended length relative to the support tube.