Robot Arm Gripper Coupling Mechanism for Quick Attachment

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Solution Overview

Problem

Existing methods for coupling a gripper to a robot arm are either time-consuming and inconvenient, or they are limited by the type of connector used, which restricts the application of certain connector structures such as the plug-socket type.

Innovation Solution

An assembly structure comprising an assembling part and a coupling part, where the coupling part is attachable and detachable from the assembling part, featuring a base member, a sleeve member, and a latch member that allows for various connector structures and easy mounting and detachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a bolt member is used to assemble the gripper directly to the robot arm, then the connection is secure, but a large amount of time is required to detach and reattach the gripper

Engineering Contradiction:
Improveconnection securityVSAvoidtime for detachment and reattachment
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The coupling device is divided into separate components: a coupling member with a locking mechanism and a coupling hole with corresponding features. This segmentation allows the connection to be secured through engagement of these parts while enabling quick release by actuating the locking mechanism, thus reducing attachment time while maintaining connection security

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The coupling member and coupling hole are pre-configured with complementary geometric features (protrusions and recesses) and locking mechanisms that automatically engage when brought together. This preliminary configuration eliminates the need for time-consuming manual assembly steps, allowing rapid attachment while ensuring secure connection upon engagement

Inventive Principle:
Principle #10Preliminary action

2Loss of time

If a quick-changer-type coupling member is used to connect the gripper and robot arm, then the attachment and detachment process is faster, but the type of connector is limited and cannot accommodate plug-socket type connectors

Engineering Contradiction:
Improvetime for attachment and detachmentVSAvoidconnector type compatibility
Core Design Contradiction:
Loss of timeVSAdaptability or versatility

Solution Approach 1:

The coupling device is designed with a universal interface that can accommodate multiple connector types including plug-socket connectors. The coupling member and coupling hole are configured with standardized geometric features that work with various connector configurations, enabling the same coupling mechanism to support different connector types while maintaining quick attachment and detachment capabilities

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250178213A1Assembly structure and robot including the same
Publication Date: 2025.06.05 HYUNDAI MOTOR CO LTD
  • US20250178213A1 patent drawing
  • US20250178213A1 patent drawing
  • US20250178213A1 patent drawing

AI summary

An assembly structure, such as for connecting a robot arm and a gripper or other such components, includes an assembling part and a coupling part provided above the assembling part. The assembling part includes a body and a flange fixedly coupled to an upper portion of the body. The coupling part includes a base member and a sleeve member configured to surround a periphery of the base member. The flange is configured such that a rotational motion of the flange about a rotation center axis relative to the base member is restricted. The sleeve member is configured to be rotatable relative to the base member and the sleeve member and the flange are configured to interfere with each other in an upward/downward direction.