Gripper Gear Transmission Eliminates Dead Angles

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Solution Overview

Problem

Current robot grippers face issues with safety due to potential dead angles in motion, unbalanced forces leading to increased resistance and reduced efficiency, and complexity in design, which can result in operator injury and equipment damage, and also suffer from wear and maintenance challenges.

Innovation Solution

A gripper with a gear transmission mechanism is developed, featuring a gear set with a fixed, intermediate, and fingertip gear, where the gear carrier is rotatably connected to the case, allowing for precise and efficient movement of fingertips, eliminating dead angles and ensuring uniform force distribution, thus enhancing safety and reducing wear.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional gripper mechanism is used, then the structure is simple, but dead angles in motion create safety hazards and operator injury risks

Engineering Contradiction:
ImprovesafetyVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the traditional mechanical linkage system with a gear transmission system. The gear set includes a fixed gear, intermediate gear, and fingertip gear that work together to eliminate dead angles in motion. This substitution maintains structural simplicity while significantly improving safety by ensuring continuous motion control without dead zones where operator injury could occur.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an intermediate gear as a mediator between the fixed gear and the fingertip gear. This intermediate element enables smooth power transmission and eliminates direct mechanical linkages that create dead angles. The intermediate gear acts as a buffer that ensures continuous, controlled motion throughout the gripping cycle, improving safety without requiring complete redesign of the entire mechanism.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If a traditional gripper mechanism is used, then the design is simple, but unbalanced forces lead to increased resistance and reduced efficiency

Engineering Contradiction:
ImproveefficiencyVSAvoiddesign complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent replaces the traditional mechanical linkage system with a gear transmission system. The gear set includes a fixed gear, intermediate gear, and fingertip gear that work together to eliminate dead angles in motion. This substitution maintains structural simplicity while significantly improving safety by ensuring continuous motion control without dead zones where operator injury could occur.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an intermediate gear as a mediator between the fixed gear and the fingertip gear. This intermediate element enables smooth power transmission and eliminates direct mechanical linkages that create dead angles. The intermediate gear acts as a buffer that ensures continuous, controlled motion throughout the gripping cycle, improving safety without requiring complete redesign of the entire mechanism.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Duration of action of stationary object

If a traditional gripper mechanism is used, then the structure is simple, but wear and maintenance challenges reduce longevity

Engineering Contradiction:
ImprovelongevityVSAvoidstructure complexity
Core Design Contradiction:
Duration of action of stationary objectVSDevice complexity

Solution Approach 1:

The patent replaces the traditional mechanical linkage system with a gear transmission system. The gear set includes a fixed gear, intermediate gear, and fingertip gear that work together to eliminate dead angles in motion. This substitution maintains structural simplicity while significantly improving safety by ensuring continuous motion control without dead zones where operator injury could occur.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an intermediate gear as a mediator between the fixed gear and the fingertip gear. This intermediate element enables smooth power transmission and eliminates direct mechanical linkages that create dead angles. The intermediate gear acts as a buffer that ensures continuous, controlled motion throughout the gripping cycle, improving safety without requiring complete redesign of the entire mechanism.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 gear transmission configuration provides a safe, efficient, and accurate grasping mechanism with reduced maintenance needs, preventing operator injury and equipment damage, while ensuring high transmission precision and longevity.

Implementation Method 1

The gear set includes a fixed gear, an intermediate gear and a fingertip gear that are engaged in sequence

Methodology Applied
Scientific EffectGear transmission: Gear

Data Source

PatentUS20240300117A1Gripper and robot
Publication Date: 2024.09.12 SHANGHAI FLEXIV ROBOTICS TECH CO LTD
  • US20240300117A1 patent drawing
  • US20240300117A1 patent drawing
  • US20240300117A1 patent drawing

AI summary

Provided are a gripper and a robot. The gripper includes a case, a plurality of gripping assemblies respectively assembled to the case, and a driving assembly configured to move the plurality of gripping assemblies. Each gripping assembly is provided with a fingertip at an end portion, and fingertips of the gripper are configured to cooperate with each other for grasping. Each gripping assembly further includes a gear set and a gear carrier rotatably connected to the case. The gear set includes a fixed gear, an intermediate gear and a fingertip gear engaged in sequence. The fixed gear is fixedly connected to the case, and the fingertip gear is fixedly connected to the fingertip. The intermediate gear and the fingertip gear are mounted to the gear carrier and respectively rotatably connected to the gear carrier. The driving assembly is configured to rotate the gear carrier.