Delivery Robot Door Link Mechanism for Limited-Space Operation
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Solution Overview
Problem
Delivery robots face challenges in safely transporting items over uneven terrain and navigating obstacles while maintaining the security of stored goods, especially when traveling long distances, and there is a need for efficient use of internal space and safe operation in limited environments.
Innovation Solution
A delivery robot design featuring a body with a storage compartment that includes a door system with sliding panels, operated by a motorized link mechanism, allowing for safe opening and closing of storage sections, and equipped with sensors for obstacle detection and partitioning to optimize internal space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the door panel slides laterally to open, then the robot can operate in limited spaces, but the door mechanism becomes more complex
Solution Approach 1:
The door panel is divided into multiple sections (first door panel and second door panel) that can move independently through lateral sliding and rotating motions. This segmentation allows the door to navigate around obstacles and open in limited spaces while distributing the mechanical complexity across multiple simpler moving parts rather than requiring a single complex mechanism.
Solution Approach 2:
The door mechanism transitions from a static hinged design to a dynamic system where the door panel can perform lateral sliding motion and rotating motion. The first door link and second door link enable the door to change its configuration dynamically, switching between closed, partially open, and fully open states based on spatial constraints and obstacles.
2Reliability
If the door panel has different angles in open and closed states, then the robot can minimize exposure and enhance security, but the mechanism requires additional components
Solution Approach 1:
The door mechanism is designed to automatically assume optimal angles for security and protection before any opening or closing operation begins. The first door link and second door link are pre-configured with specific spacing relationships that automatically position the door panel at the desired angle, eliminating the need for complex active control systems while maintaining reliable security positioning.
Solution Approach 2:
The first door link and second door link act as intermediary mechanical elements between the motor and the door panel. These links transmit and transform the motor's rotational force into the complex angular movements required for the door panel, simplifying the control architecture while achieving the desired security angles through mechanical advantage rather than direct motor-to-door coupling.
3Shape
If the first door link has greater spacing between ends than the second door link, then the door can achieve proper angular positioning, but the asymmetric design increases manufacturing complexity
Solution Approach 1:
The asymmetric spacing between the first door link and second door link is deliberately designed to create different local geometries that correspond to specific functional requirements. The first door link has greater spacing to enable the door panel to achieve its open angle, while the second door link has smaller spacing for the closed angle configuration. This localized geometric differentiation allows precise angular positioning while keeping each individual link relatively simple in structure.
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
The solution ensures safe transportation of items by preventing them from falling, allows for efficient use of internal space, and enhances safety by minimizing exposure and preventing overvoltage issues, while enabling safe operation in limited spaces and reducing the risk of liquid ingress into electronic components.
Implementation Method 1
a motor that provides a pivoting force to the first door link
Implementation Method 2
a first door link having a first end pivotably coupled to the door panel and a second end pivotably coupled to the body housing
Data Source
AI summary
A delivery robot includes a body housing including a storage defined therein and a body opening defined in a front surface thereof, and a door that operates in a closed state to cover the body opening or an open state to open the body opening. The door includes a door panel that covers the body opening at the front surface of the body housing in the closed state and slides in a lateral direction of the body housing in the open state, a first door link having a first end pivotably coupled to the door panel and a second end pivotably coupled to the body housing, and a motor that provides a pivoting force to the first door link. The door panel has different angles in the open state and the closed state. The delivery robot safely opens and closes the door in a limited space by moving a pivoting range of the door along an outer surface of a body when the door is opened.