Infant Carrier Backrest Angle Adjusting Mechanism

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Solution Overview

Problem

Existing infant carriers with non-adjustable or complex backrests fail to meet diverse usage requirements, affecting user comfort and increasing manufacturing costs.

Innovation Solution

A backrest angle adjusting mechanism comprising a fixing member, an adjustment member, and a connecting member, allowing for simple and cost-effective adjustment of the backrest inclination by sliding the adjustment member on the fixing member, which is connected to the seat body and backrest, enhancing comfort and usability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the backrest angle is made adjustable to meet different usage requirements, then the adaptability and comfort are improved, but the structure becomes more complicated and the manufacturing cost increases

Engineering Contradiction:

Improvebackrest angle adjustabilityVSAvoidadjustment mechanism structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The adjustment mechanism is divided into independent functional components: a fixing member with a through hole, an adjustment member with connecting parts, and operating parts. This segmentation allows each component to perform its specific function independently, simplifying the overall structure while maintaining adjustability functionality.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of using a complex mechanical linkage system to achieve backrest adjustment, the patent inverts the approach by using a simple sliding mechanism where the adjustment member moves linearly along the fixing member, and this linear motion is converted to rotational motion of the backrest through the connecting geometry. This inversion of the motion generation approach significantly simplifies the structure.

Inventive Principle:

Principle #13The other way round (Inversion)

2Adaptability or versatility

If a complex adjustment mechanism is used to achieve backrest angle adjustment, then the adaptability is improved, but the ease of operation deteriorates

Engineering Contradiction:

Improvebackrest angle adjustabilityVSAvoidoperation convenience

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The adjustment member is designed to slide freely along the fixing member under the action of force applied to the operating part. The geometry of the connecting members automatically converts this linear sliding motion into the required rotational motion of the backrest, eliminating the need for complex control mechanisms and making the operation intuitive and simple.

Inventive Principle:

Principle #25Self-service

3Adaptability or versatility

If a complex adjustment mechanism is used to achieve backrest angle adjustment, then the adaptability is improved, but the manufacturing cost increases

Engineering Contradiction:

Improvebackrest angle adjustabilityVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The adjustment mechanism uses simple, easily manufactured components that can be produced through basic machining or molding processes. The fixing member, adjustment member, and connecting members are designed as straightforward geometric shapes without complex features, making them suitable for high-volume, low-cost manufacturing.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

4Device complexity

If the backrest is fixed to the seat body to simplify the structure, then the manufacturing cost is reduced, but the adaptability deteriorates

Engineering Contradiction:

Improvestructure simplicityVSAvoidbackrest angle adjustability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The backrest connection is designed to be dynamically adjustable rather than statically fixed. The adjustment member can slide along the fixing member to change the backrest angle, and the mechanism includes features to lock the backrest at different positions. This dynamic capability allows the structure to adapt between a simple fixed state and an adjustable state as needed.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11858544B2Backrest angle adjusting mechanism and infant carrier having the same

Publication Date: 2024.01.02 CHINA WONDERLAND NURSERYGOODS

AI summary

A backrest angle adjusting mechanism and an infant carrier having the same. The backrest angle adjusting mechanism is assembled between a seat body and a backrest of the infant carrier, the seat body being installed on a frame, the backrest being rotatably connected to the seat body, wherein the backrest angle adjusting mechanism comprises a fixing member, an adjustment member, and a connecting member, one end of the connecting member is connected to the backrest, the other end of the connecting member is connected to the fixing member, one end of the adjustment member is connected to the seat body or the frame to form a connecting part, and the other end of the adjustment member is bypassed around the fixing member to form an operating part, operating of the operating part causes the adjustment member to slide on the fixing member to rotate in respect to the seat body.