Universal joint for internal threads and external threads, pipeline, method and closestool

Abstract

The invention provides an universal joint for internal threads and external threads, a pipeline, a method and a closestool. The universal joint comprises a nut and an external thread joint; a part ofthe inner side of the nut is an external thread coupling area, and a part of the inner side of the nut is an external thread decoupling area; the external thread joint is arranged in the nut in a sleeved mode, a part of the outer side of the external thread joint is an internal thread coupling area, and a part of the outer side of the external thread joint is an internal thread decoupling area, the external thread joint can rotate in the nut and move in the axial direction. The universal joint for the internal threads and the external threads can be compatible with and matched with the internal threads and the external threads, and the limitation that a pipe can only be matched with one kind of the internal threads or the external threads is broken; and sealing nodes are reduced, the sizeof the joint is relatively small, and the connecting effect is attractive.

Description

technical field [0001] The invention relates to a device used in pipe connection, a pipe using the device, a method and a toilet, in particular to a universal joint with internal and external threads, a pipe using the device, a method and a toilet. Background technique [0002] In general water supply, drainage, hydraulic transportation, and gas transportation, it is often necessary to use different pipes to connect to extend the pipe. However, because the common pipes have internal threads at both ends, they cannot be directly connected, and it is necessary to add an external thread at both ends. The connector of the adapter is transferred, and then it can be connected. Especially for the occasion where the pipeline is affected by the environment, it is often necessary to change the pipeline, and the increase in raw materials, increased sealing risk, and increased joint size will all become disadvantages. In products such as the sanitary industry that require aesthetics an...

AI Technical Summary

Problems solved by technology

But when the building has already left the joints, the length of the pipe itself will be shorter than the actual need. At this time, ordinary pipes need to be purchased for connection, which will cause the joints to be exposed, increase the sealing process, and the joints will be larger in size, which will affect the appearance.

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