Infant Carrier Backrest Locking Mechanism for Angle Adjustment

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Solution Overview

Problem

Infant carriers lack a backrest adjusting mechanism, leading to discomfort for infants who must maintain a fixed posture for extended periods, as they do not allow for angle adjustments to accommodate user needs.

Innovation Solution

A backrest adjusting mechanism is introduced, comprising an outer cover, inner cover, driving member, locking member, and operating member, which enables angle adjustment of the backrest tube by switching the driving member between positions to lock or release the covers, allowing users to easily adjust the backrest angle through a simple mechanical design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a backrest adjusting mechanism is added to the infant carrier, then the adaptability and comfort are improved, but the device complexity increases

Engineering Contradiction:

Improvebackrest angle adjustabilityVSAvoidmechanical structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The backrest structure is divided into an inner cover connected to the backrest tube and an outer cover fixed to the frame, which can rotate relative to each other. This segmentation allows independent adjustment of the backrest angle while maintaining structural simplicity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The backrest tube is made dynamically adjustable through the rotating inner cover mechanism. The backrest can transition between fixed and adjustable states, allowing it to adapt to different infant comfort needs while maintaining a simple mechanical design.

Inventive Principle:

Principle #15Dynamics

2Reliability

If a locking mechanism is implemented to secure the backrest position, then the reliability is improved, but the ease of operation deteriorates

Engineering Contradiction:

Improvebackrest position stabilityVSAvoidadjustment operation difficulty

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The locking member automatically locks into engagement with the driving member when the inner cover rotates to a desired position. The mechanism self-locks without requiring additional user action, maintaining both reliability and ease of operation.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The locking member engages with the driving member at periodic intervals during rotation, providing automatic locking at discrete angular positions. This periodic engagement ensures stable positioning while requiring minimal user input.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS11667316B2Infant carrier and backrest adjusting mechanism thereof

Publication Date: 2023.06.06 WONDERLAND SWITZERLAND AG

AI summary

A backrest adjusting mechanism disposed between a backrest tube and a frame of an infant carrier is disclosed. The backrest adjusting mechanism includes an outer cover, an inner cover, a driving member, a locking member, and an operating member. The outer cover is fixed at the frame. The inner cover is connected to the backrest tube and pivoted to the outer cover via a pivot shaft. The driving member is movably disposed between the outer cover and the inner cover. The locking member is movably disposed on the driving member. The operating member is connected to the driving member for driving the driving member to move between a first position and a second position. Switching of the driving member between the first position and the second position drives the locking member to selectively lock or release the outer cover and the inner cover.