Delivery Mobility Chain Layout for Low-Height Tray Ejection

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Solution Overview

Problem

Existing delivery mobility designs with chain structures require a large gap between plate members to prevent interference during article ejection, leading to increased height and reduced efficiency in stacking and unloading multiple articles.

Innovation Solution

A mobility design featuring a closed curve chain member with bent sections and rotary members that allows for sequential ejection of articles without the upper tray members moving downward, minimizing height and enabling efficient stacking and unloading of multiple articles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a chain structure rotates continuously during article ejection, then articles can be delivered sequentially, but the plate members require a large gap between them causing increased mobility height

Engineering Contradiction:
Improvesequential article delivery efficiencyVSAvoidmobility height
Core Design Contradiction:
ProductivityVSLength of stationary object

Solution Approach 1:

The chain structure transitions from continuous rotation to intermittent motion. The chain rotates only when tray members need to change positions, and remains stationary during article ejection. This dynamic control allows plate members to be positioned closely without interference, reducing mobility height while maintaining sequential delivery capability

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The chain implements periodic rotation cycles: rotating to reposition tray members to the standby section, pausing during article ejection, then rotating again for the next repositioning. This periodic action pattern enables close spacing of plate members while still achieving sequential article delivery through timed chain movements

Inventive Principle:
Principle #19Periodic action

2Length of stationary object

If plate members are positioned closely together, then mobility height is reduced, but article ejection becomes difficult due to interference between moving and stationary plate members

Engineering Contradiction:
Improvemobility heightVSAvoidarticle ejection process
Core Design Contradiction:
Length of stationary objectVSEase of operation

Solution Approach 1:

The system dynamically controls chain motion to create temporary clearance during ejection. The chain rotates to bring the standby section into position, allowing the active plate member to eject articles without interference from adjacent plate members, then pauses to maintain this safe configuration during the entire ejection process

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

Before article ejection begins, the chain rotates in advance to position tray members in the standby section with adequate spacing. This preliminary positioning ensures that when ejection occurs, there is sufficient clearance between plate members to prevent interference, enabling close overall spacing while maintaining safe operational gaps

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11780674B2Mobility for delivery
Publication Date: 2023.10.10 HYUNDAI MOTOR CO LTD
  • US11780674B2 patent drawing
  • US11780674B2 patent drawing
  • US11780674B2 patent drawing

AI summary

An embodiment mobility for delivering articles includes a frame defining a body of the mobility, a chain member coupled to a first side of the frame, wherein the chain member has a closed curve shape along an up-down direction, is movable relative to the frame, and includes a standby section provided at a fixed position with respect to the frame irrespective of a movement of the chain member, wherein the standby section includes a plurality of bent areas, a tray member having a first side coupled to the chain member, the tray member being movable in connection with a movement of the chain member, a wheel coupled to a lower portion of the frame, and a driver configured to provide a driving force to the chain member.