Non-eccentric 180-degree unfolding locking hinge device

Abstract

The invention provides a non-eccentric 180-degree unfolding locking hinge device. The device comprises a latch hook body, a volute spiral spring, double hinge bodies, a center shaft, a sleeve, a bearing positioning sleeve, an eccentric shaft, a plate spring, a clamping hook, an eight-direction adjusting sleeve, a volute spiral spring locating sleeve, a locating shaft, a spring end pressing cap and a spring core gland. The device realizes a 180-degree unfolding function through the structural design of double hinge bodies and the latch hook body; in a unfolding locking state, a pointing included angle between the latch hook body and double hinge bodies is 180 degrees, and the axis of the center shaft is located on the central plane of the hinge device, so that the a non-eccentric hinge joint of a truss rod or an arm rod is realized, the strange configuration of mechanism movement is prevented, and smaller accommodating and enveloping requirements of a truss mechanism are satisfied; and the hinge device adopts a relatively long hinge joint matching length and two angular contact bearings to realize higher unfolding rigidity, unfolding repeat precision and bearing capacity and to satisfy high-rigidity and high-precision connecting requirements of a large space load.

Description

technical field [0001] The invention belongs to the technical field of hinge mechanisms, in particular to a non-eccentric 180-degree unfolding locking hinge device. Background technique [0002] With the large-scale and diversified development of space loads, there are more and more loads with large sizes and heavy weights. The traditional solar wing hinges can no longer meet the needs of higher stiffness and higher storage efficiency for large loads. CN201310180826.6 "A Hinge Locked by a Four-bar Link Mechanism" published by Shang Hongjun and others in 2013 proposes an unfolded locking hinge suitable for parts such as solar wings, which solves the problem of reliable connection of light loads in space, but The hinge is an eccentric expandable hinge, that is, the rotation center of the hinge and the connected bodies on both sides are not in a straight line, which leads to a large storage volume, and it will lead to a singular position during the deployment process when appli...

AI Technical Summary

Problems solved by technology

In addition, because the design of the solar wing hinges tends to be lightweight and miniaturized, the axial connection is short, the lateral bending stiffness is small, and the repeatability of deployment is not very high, these problems lead to its application in spaceborne deployable mechanisms. limitations

However, due to structural interference, the general non-eccentric hinged mechanism cannot rotate at 180 degrees, which cannot meet the needs of forming a stable state of linear struts after the deployable structure is deployed.

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