Child Carrier Dinner Tray with Nested Inserting-Member Connection

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Solution Overview

Problem

Conventional child stroller dinner trays are inconvenient to assemble and disassemble, and their external holding arms affect the appearance of the armrests.

Innovation Solution

A dinner tray with obliquely extending inserting members that detachably engage with inserting slots in a tray holder, featuring positioning recesses and locking portions for secure and easy mounting and dismounting, and a child carrier with a tray holder that supports the tray without external connectors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the holding arm is used to connect the dinner tray to the front armrest, then the dinner tray can be mounted on the armrest, but the assembly and disassembly require forceful lifting making it inconvenient

Engineering Contradiction:

Improveease of assembly and disassemblyVSAvoidconnection mechanism complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The connection mechanism is divided into separate components: an inserting member on the dinner tray and a corresponding inserting slot on the holder. This segmentation allows the tray to be easily inserted and locked without requiring forceful lifting, resolving the contradiction between ease of operation and connection reliability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The inserting member is designed to be received within the inserting slot, creating a nested connection structure. The locking portion of the inserting member engages with the locking slot inside the holder, providing secure connection while allowing simple insertion and removal motions.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Ease of operation

If the holding arm is located on the outside of the front armrest, then the dinner tray can be connected to the armrest, but it affects the overall appearance of the armrest

Engineering Contradiction:

Improvemounting functionalityVSAvoidappearance of armrest

Core Design Contradiction:

Ease of operationVSShape

Solution Approach 1:

The holding arm is extracted from the visible exterior of the armrest and relocated to the interior structure. The inserting slot is formed inside the holder, allowing the connection mechanism to function without being visible from the outside, thus maintaining the aesthetic appearance while preserving mounting functionality.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The inserting member and locking mechanism are nested within the holder structure, concealing the connection components inside the armrest. This nested arrangement allows the dinner tray to be securely mounted while keeping the exterior appearance clean and uncluttered.

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentEP4371852B1Dinner tray, dinner tray holder and child carrier

Publication Date: 2026.04.08 WONDERLAND SWITZERLAND AG

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AI summary

The present disclosure provides a dinner tray (1), a dinner tray holder (2), and a child carrier (100). The dinner tray (1) includes a dinner tray body (11) and at least one inserting member (12) extending from the dinner tray body (11), and the at least one inserting member (12) is configured to be detachably engaged with at least one inserting slot (20) of a dinner tray holder (2). The dinner tray holder (2)includes at least one inserting slot (20) configured to be detachably engaged with at least one inserting member (12) of the dinner tray (1). The child carrier (100) includes the dinner tray (1) and the dinner tray holder (2).