Assembly indicator and quick connection device

Abstract

The invention provides an assembly indicator and a quick connection device. The assembly indicator is in axial sleeved connection with the butt joint end, allowing an opposed insertion pipe to be inserted, of a sleeving part of the quick connection device, and a locking ring is arranged in the sleeving part. The assembly indicator comprises an indicator body with a through hole, and at least one interference pin extending out from the indicator body, and the interference pins extend towards the interior of the butt joint end of the sleeving part around the through hole. The positions of the interference pins in the sleeving part are configured as follows: when the locking ring deforms due to the insertion of the opposed insertion pipe, the interference pins and the locking ring form axial interference, and when the locking ring returns to a natural state as the opposed insertion pipe is inserted in place, the interference pins axially move towards the butt joint end until the interference pins and the locking ring form radial interference. The assembly indicator provides visual indication of the connection state between the opposed insertion pipe and the quick connection device, and can prevent accidental unlocking of the opposed insertion pipe.

Description

technical field [0001] The present invention relates generally to the field of quick connectors. More specifically, it relates to an assembly indicator for a quick connection device and a quick connection device having the same. Background technique [0002] Detachable quick connectors that connect one fluid line / equipment to another fluid line / equipment are widely used in the automotive industry, typically to connect one fluid line (e.g. Pipeline connection, or quick connection of one plug-in part to another plug-in part. [0003] Various forms of quick connectors exist in the prior art. Document CN1916474A discloses a connector well known in the art, which is used to assemble an insert or a male joint with an annular stopper protrusion. In order to accommodate such male fittings with enlarged outer diameters, the quick connectors are correspondingly provided with larger dimensions. With the development of technology, the expectation for the miniaturization of joints is...

AI Technical Summary

Problems solved by technology

[0004] In practical applications, it was further found that although the quick connector used to assemble the male joint with the annular groove can be made more miniaturized, compared with the male joint with the annular stopper protrusion, the male joint with the annular groove The opening depth of the annular groove on the connector is smaller than the radial extension length of the annular stopper protrusion on the male joint, which leads to a decrease in locking strength and reliability when the annular groove engages with the locking element on the quick connector. Thereby bringing great hidden danger to the safety of pipeline connection

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