Hinge for locking four-bar mechanism

Abstract

The invention provides a hinge for locking a four-bar mechanism. The hinge comprises a locking hinge, an eccentric shaft, a limiting screw, a locking hook, a locking pin, a fork hinge, a cam, a hinge spindle, a deployment spring and the four-bar mechanism, wherein the locking hinge and the head of the fork hinge are hinged through the hinge spindle, the head of the locking hook is hinged in the middle of the hinge spindle, the limiting screw is fixed at the tail of the locking hinge along the locking hinge thickness direction, one end of a locking oscillating bar of the four-bar mechanism is hinged with the tail of the locking hinge through the eccentric shaft, the other end of the locking oscillating bar is hinged with one end of a connecting bar through the locking pin, one end of a crank is hinged with the other end of the connecting bar through a connecting bar spindle, the other end of the crank is hinged with the head of the locking hinge through a crank spindle, a crank pin is hinged on an extension arm of the crank, the cam is hinged at one end of the hinge spindle, an inner ring of the deployment spring is fixedly connected with the other end of the hinge spindle, and the outer end of the deployment spring is fixedly connected with the bar spindle. The hinge is applied to deployment and locking of components such as solar wings and high in locking rigidity.

Description

technical field [0001] The invention relates to a hinge, in particular to a hinge locked by a four-bar linkage mechanism, and belongs to the technical field of spacecraft deployment mechanisms. Background technique [0002] The hinges used in my country's spacecraft solar wings and antennas are generally pin-slot hinges. "Study on the Design of the Sun Wing Hinge Locking Groove" (Spacecraft Engineering Vol. The composition and working principle are described. This hinge is composed of male hinge, female hinge, pin shaft, locking swing lever, eccentric shaft and locking spring. Among them, the male hinge has a circular slideway, and there is a U-shaped locking groove at the end of the slideway. The male hinge and the female hinge are connected by a pin shaft; the locking swing lever assembly is a fork-shaped structure, and one end of the fork is equipped with a pin. The other end is hinged with the female hinge through the eccentric shaft, and the column pin is pressed on th...

AI Technical Summary

Problems solved by technology

[0003] The driving force for the pin of this pin-slot hinge to enter the locking groove is directly provided by the locking spring, and the general torque is small, so that the locking groove and the pin cannot be effectively clamped after locking. There will be a certain gap between the two, resulting in low locking rigidity

In addition, the distance between the pin of this hinge and the hinge pin shaft is relatively close, that is, the length of the locking arm is relatively short, which also causes its rigidity to be low.

[0004] This pin-and-slot hinge is not suitable for occasions that require high rigidity of the deployment parts, such as large solar wings with high rigidity, large antennas and deployment arms, etc.

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