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Double crank type hollow flexible hinge

A flexible hinge and hyperbolic rod technology, which is applied to shafts and bearings, mechanical equipment, pivots, etc., can solve problems such as difficulty in adapting to large rotation angles, difficulty in improving rotation accuracy, and drift in the center of rotation. The effect of reducing internal stress and improving compressive stiffness

Inactive Publication Date: 2009-01-21
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional notch-type flexible hinge has a small range of motion, and it is difficult to adapt to some occasions with large corners.
Although the range of motion of the ordinary reed flexible hinge is improved, the center of rotation drifts seriously, and it is difficult to improve its rotation accuracy in the case of large deformation.

Method used

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  • Double crank type hollow flexible hinge
  • Double crank type hollow flexible hinge

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Embodiment Construction

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0016] See figure 1 As shown, the present invention is a hyperbolic rod-type hollow flexible hinge, which is symmetrically cut with a left reed 3 and a right reed 4 on opposite two faces of a rectangular cube, and a certain amount is cut on the longitudinal center of the rectangular cube. The longitudinal rib 6 of thickness, the transverse rib 5 of certain thickness is cut on the transverse center of rectangular cube, longitudinal rib 6, transverse rib 5 and right reed 4 form A hollow area 11, C hollow area 13, longitudinal rib 6, transverse rib Rib 5 and left reed 3 form B hollow area 12, D hollow area 14. The left reed 3, the right reed 4, the transverse rib 5 and the longitudinal rib 6 form a hyperbolic rod type hollow flexible hinge. The hyperbolic rod type hollow flexible hinge divides the rectangular cube into an upper link 1 and a lower link 2 .

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Abstract

The invention discloses a hyperbolic rod-type hollow flexible hinge, symmetrically cutting out left and right reels on the two opposite surfaces of a rectangular cube, cutting out vertical bar in the vertical center of the rectangular cube, cutting out horizontal bar in the horizontal center of the rectangular cube, and the vertical bar, the horizontal bar and the right reel form hollow regions A and C, the vertical bar, the horizontal bar and the left reel form hollow regions B and D; the left and right reels and the horizontal and vertical bars separate the rectangular cube into upper and lower link rods. And the invention adopts hollow design and converts the traditional notched flexible hinge into reel flexible hinge, thus enlarging its rotation range and reducing structural inner stress, and applied to large-travel intelligent control mechanisms.

Description

technical field [0001] The invention relates to a flexible hinge, in particular to a hyperbolic rod type hollow flexible hinge. Background technique [0002] The flexible hinge refers to a kinematic pair structure that uses the elastic deformation of the material to generate relative motion between adjacent rigid rods under the action of an external force or moment, which is very different from the structure of the traditional rigid kinematic pair. A flexible hinge is a typical flexible element in a flexible mechanism. Compared with traditional rigid hinges (mechanisms), flexible hinges and flexible mechanisms have many advantages: (1) can be integrated (or integrated) design and processing, so it can simplify the structure, reduce volume and weight, and avoid assembly; (2) There is no gap and friction, and high-precision movement can be realized; (3) It is free from wear and long life; (4) It is free from lubrication and pollution; (5) It can increase the structural rigidi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C11/00
Inventor 宗光华毕树生于靖军余志伟裴旭
Owner BEIHANG UNIV
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