Outdoor Trolley Positioning Rod for Stable Multi-State Folding

Solution Overview

Problem

Existing outdoor trolleys have single functionality, limiting their flexibility in use and inability to adapt to multiple scenarios during outdoor activities.

Innovation Solution

An outdoor trolley with multiple states, featuring a bottom frame with positioning blocks, a rotatable side frame, and a detachable positioning rod that allows adjustment between a folding, trolley, recliner, and bed state, enhancing versatility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the outdoor trolley uses a fixed structure, then the structural stability is improved, but the adaptability to different usage scenarios deteriorates

Engineering Contradiction:

Improvestructural stabilityVSAvoidadaptability to different scenarios

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The side frame is designed to be rotatable relative to the bottom frame, allowing the trolley to dynamically change its configuration between different states (transportation state, reclining state, sleeping state). This dynamic structure enables the same physical components to serve multiple functions across different usage scenarios.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The positioning rod with multiple positioning slots serves multiple functions: it locks the side frame at different angles during rotation, enables transition between various states, and provides structural support. This multi-functional component resolves the contradiction by allowing one element to contribute to both stability (through positioning) and adaptability (through multiple positions).

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If the outdoor trolley uses a rotatable side frame for multiple states, then the adaptability is improved, but the structural stability deteriorates

Engineering Contradiction:

Improveadaptability to different scenariosVSAvoidstructural stability

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The side frame rotates relative to the bottom frame, enabling the trolley to transition between different states (transportation, reclining, sleeping). This dynamic capability provides adaptability to various usage scenarios while maintaining structural integrity through controlled movement.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The positioning rod with multiple positioning slots serves multiple functions: it locks the side frame at different angles during rotation, enables transition between various states, and provides structural support. This multi-functional component resolves the contradiction by allowing one element to contribute to both stability (through positioning) and adaptability (through multiple positions).

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Device complexity

If the outdoor trolley has a simple transportation function, then the device complexity is reduced, but the functionality for multiple scenarios deteriorates

Engineering Contradiction:

Improvedevice complexityVSAvoidfunctionality for multiple scenarios

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The side frame rotates relative to the bottom frame, allowing the trolley to dynamically change its configuration between different states (transportation state, reclining state, sleeping state). This dynamic structure enables the same physical components to serve multiple functions across different usage scenarios.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The positioning rod with multiple positioning slots serves multiple functions: it locks the side frame at different angles during rotation, enables transition between various states, and provides structural support. This multi-functional component resolves the contradiction by allowing one element to contribute to both stability (through positioning) and adaptability (through multiple positions).

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Enables the trolley to function in various scenarios, including transportation, reclining, and sleeping, improving user flexibility and adaptability.

Implementation Method 1

an elastic member, the elastic member being provided between the pin and the housing; one end of the elastic member is fixedly connected to an interior of the housing

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

A torsion spring is provided between the universal wheel and the positioning blocks

Methodology Applied

Scientific EffectTorsion spring: Torsion Spring

Data Source

PatentUS20250353532A1Outdoor trolley with multiple states

Publication Date: 2025.11.20 QUZHOU HANHU TRADING CO LTD

AI summary

An outdoor trolley with multiple states is provided, which includes a bottom frame, a side frame, and a positioning rod. The bottom frame is provided with a plurality of positioning blocks; the side frame is rotatably connected to the bottom frame; the positioning rod can be detachably connected between the positioning blocks and is configured to limit the side frame. By cooperating with the positioning blocks of the bottom frame, an angle of the side frame can be adjusted through the positioning rod, thereby realizing an adjustment between a folding state, a trolley state, a recliner state, and a bed state. This enables the outdoor trolley to achieve multiple functions, suitable for various use scenarios, and improves a flexibility of use.