Large-deformation flexible mechanism

A flexible mechanism and large deformation technology, applied in the field of hinges, can solve the problems of small motion stroke, small motion stroke of flexible hinges, and limitations in application fields

Inactive Publication Date: 2015-09-30
TIANJIN GUTE METAL PROD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the traditional notch-type flexible hinge has a small motion stroke and its application field is limited.
At present, there are various forms of large-deformation flexible hinges, but linear reeds are mostly used as the basic flexible unit to form complex large-deformation flexible hinges. The formed flexible hinge has a small movement stroke
[0003] At present, there are various forms of large-deformation flexible hinges, but linear reeds are mostly used as the basic flexible unit to form complex large-deformation flexible hinges. The formed flexible hinge has a small movement stroke

Method used

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Embodiment Construction

[0012] A large-deformation flexible mechanism is composed of two large-deformation flexible hinges 2 connected in series. The large-deformation flexible hinge 2 includes 6 curved sheet flexible units 4, 3 inner arms 8 and an outer ring 5. The 6 curved sheet flexible One end of the unit 4 is converged and fixed on the center point 9, and the other end is evenly distributed and fixed on the outer ring 5. The six curved thin plate flexible units 4 are symmetrical to each other to form a curved thin plate flexible unit group. Three groups of curved thin plate flexible unit groups are about the central point 9. The center is symmetrical, and the three inner arms 8 are located at the symmetrical axes of the three sets of curved thin plate flexible unit groups. One end of the inner arm 8 is fixed on the center point 9, and the other end is connected to the mechanical input interface 7. The outer ring A mechanical output interface 6 is provided between two groups of adjacent curved thi...

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Abstract

The invention provides a large-deformation flexible mechanism formed by connecting two large-deformation flexible hinges in series. Each large-deformation flexible hinge comprises six curve sheet flexible units, three inner arms and an outer ring, wherein one end of each curve sheet flexible unit is gathered on and fixed to a central point, the other ends of the six curve sheet flexible units are evenly distributed on and fixed to the outer ring, every two curve sheet flexible units are in axial symmetry to form a curve sheet flexible unit set, the three curve sheet flexible unit sets are in central symmetry about the central point, the three inner arms are located at the symmetry axis positions of the three curve sheet flexible unit sets respectively, one end of each inner arm is fixed to the central point, and the other ends of the inner arms are connected with mechanical input connectors. The curve sheet flexible unit sets are used for establishing the distributed-type blade-shaped rotary flexible hinges, when the centers of the hinges are subjected to the torque effect, the flexible hinges cannot generate the rotation center drifting phenomenon, under pure torque drive, the errors of the deformation positions of the hinges do not exceed 2%, and the rotation errors do not exceed 9%.

Description

technical field [0001] The invention relates to a hinge, in particular to a large deformation flexible mechanism. Background technique [0002] A flexible hinge is a special kinematic pair with a certain shape that is designed and processed through integration and uses elastic deformation of materials to achieve expected motion. Most micro / nano manipulation positioning platforms are flexible mechanisms that use flexible hinges as elastic movable joints, which have a series of advantages such as no gap, no friction, no lubrication, and high resolution. However, the traditional notch-type flexible hinge has a small motion stroke, and its application field is limited. At present, there are various forms of large-deformation flexible hinges, but linear reeds are mostly used as the basic flexible unit to form complex large-deformation flexible hinges. The movement stroke of the formed flexible hinge is small. [0003] At present, there are various forms of large-deformation fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D3/16
Inventor 田振明
Owner TIANJIN GUTE METAL PROD
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