Multi-reed large-deformation flexible hook hinge

Abstract

The invention discloses a multi-reed large-deformation flexible hook hinge which comprises an outer ring I, an outer ring II, a core body and two groups of reeds; the outer ring I and the outer ring II which are perpendicular are respectively connected with the core body through one group of the reeds, and the outer ring I and the outer ring II are circular; each group of the reeds comprises at least three pairs of the reeds which are uniformly distributed in the outer ring I and the outer ring II; each pair of the reeds consists of two reeds, and the two reeds form a circular arc from the position which is near to the core body in the reverse directions and are connected onto the outer ring I or the outer ring II for constituting one pair of the reeds; and grooves are respectively formed in the intersection positions of the outer ring I and the outer ring II, wherein an opening of the groove of the outer ring I faces to the outside and the opening of the groove of the outer ring II faces to the inside so as to keep an interval between the intersection positions of the outer ring I and the outer ring II, and the outer ring I is positioned on the outer side of the outer ring II. The flexible hook hinge is the multi-reed flexible hinge structure which has the advantages of large stroke and high precision. Furthermore, the axis drift during the rotation is very small, thereby being applicable to large-stroke precision control structures.

Description

technical field [0001] The invention relates to a flexible hinge, in particular to a multi-leaf large-deformation flexible Hooke hinge, which is suitable for technical fields such as precision machinery and robots. 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. 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 str...

AI Technical Summary

Problems solved by technology

Among the traditional flexible hinges, there are some hinges with functions similar to Hooke hinges, but most of them are notched flexible hinges. This kind of notched flexible hinge has small deformation and is difficult to adapt to some occasions with large rotation angle and large displacement, and the rotation center drifts seriously. It is difficult to improve its rotation accuracy in the case of large deformation

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