Rigidity-variable soft finger, rigidity-variable soft gripper and manipulator

By setting an adjustable soft chamber and vacuum chamber in the soft fingers, and using an air pump and vacuum pump to control the amount of gas in the chamber, the problem of insufficient flexibility and adaptability of traditional rigid grippers when dealing with irregular objects and grabbing fragile objects is solved, and the variable stiffness and efficient gripping ability of soft fingers are achieved.

CN119635707APending Publication Date: 2025-03-18NORTHWESTERN POLYTECHNICAL UNIV
7 Cites 2 Cited by

Patent Information

Application Number
CN202411889175.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-20
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

Traditional rigid grippers lack flexibility and adaptability when dealing with irregular or diverse objects in shape, and are prone to damage when grabbing fragile objects and cannot provide gentle gripping.

Method used

A soft finger with variable stiffness is designed. By setting a soft chamber and a vacuum chamber in the main body of the soft finger, and setting a hard shrapnel, air inlet and air outlet in the installation structure, the amount of gas in the chamber is controlled by an air pump and vacuum pump to adjust the bending angle and stiffness of the soft finger.

Benefits of technology

It realizes that the soft fingers are both flexible and grip-free, and can be suitable for complex working environments and diverse crawling objects, meeting the different usage needs of users.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses a rigidity-variable soft finger, a rigidity-variable soft gripper and a manipulator, the rigidity-variable soft finger comprises a soft finger main body and a mounting structure, a clamping surface is arranged outside the soft finger main body, a soft chamber and a vacuum chamber are arranged in the soft finger main body, the soft chamber and the vacuum chamber both extend along the length direction of the soft finger, and the mounting structure is arranged in the soft finger main body. The soft cavity is separated from the vacuum cavity, and the vacuum cavity is located between the soft cavity and the clamping face; the installation structure is installed at one end of the soft finger body and provided with a hard elastic piece, an air inlet hole and an air exhaust hole, the air inlet hole is communicated with the soft cavity, the air exhaust hole is communicated with the vacuum cavity, and the hard elastic piece is located in the vacuum cavity and extends in the length direction of the vacuum cavity. According to the technical scheme, the rigidity-variable soft finger can be suitable for complex working environments and grabbed objects.
Need to check novelty before this filing date? Find Prior Art