Buffering mechanism used in mask ear-loop tensioning device

Abstract

The invention provides a buffering mechanism used in a mask ear-loop tensioning device, and belongs to the technical field of machines. The problem is solved that the stability is poor in the prior art. The buffering mechanism in the mask ear-loop tensioning device is located on the inner side of a push cylinder and comprises a swing rod, a buffering cylinder, a limiting rod and a buffering assembly. An indent connecting base is arranged on the inner side of the push cylinder; the inner end of the swing rod is hinged into the connecting base; the outer end of the swing rod stretches out of theinner side of the push cylinder; and the buffering cylinder is fixedly connected to the middle of the swing rod. The limiting rod is fixedly connected to the lower portion of the connecting base; thelower side of the buffering cylinder abuts against the limiting rod; the buffering assembly is connected to the upper portion of the connecting base; the buffering assembly trends to abut against theupper side of the buffering cylinder. The buffering mechanism used in the mask ear-loop tensioning device is high in stability.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a buffer mechanism in a mask belt tensioning device. Background technique [0002] The mask belt tensioning device includes a connecting rod, a guide rod, a return spring and a push cylinder. The inner end of the above-mentioned connecting rod is hinged on the guide rod, and the above-mentioned push cylinder is sleeved on the guide rod. The number of the connecting rods is two, and the above-mentioned reset The two ends of the spring are respectively connected to the middle parts of the two connecting rods, and the two connecting rods tend to lean against the two sides of the push cylinder under the elastic force of the return spring. [0003] In the initial state, the push cylinder moves down, and the outer ends of the two connecting rods are in the shape of outward expansion. After the push cylinder moves up, the two connecting rods are pushed by the push cylinder to close the...

AI Technical Summary

Problems solved by technology

[0004] However, in the tension state of the existing tensioning device, the clamping force of the outer ends of the two connecting rods on the mask belt is relatively large, which may easily cause the mask belt to be damaged or cause the mask belt to be unable to move smoothly by the tensioning device. , its stability is relatively poor

Images