Corrugated hose sealing joint

Abstract

The invention relates to a corrugated hose sealing joint, which comprises a joint body (1), wherein the joint body (1) comprises a head portion (12) and a tail portion (11), and a longitudinal through hole (13) is formed in the interior of the joint body (1). The corrugated hose sealing joint is characterized in that: a step (14) is arranged inside the joint body (1), external threads are formed in the outer wall of the head portion (12), an annular groove (15) is formed in the inner end of the external threads in the outer wall of the head portion (12), and a sealing ring (2) is arranged inside the annular groove (15); internal threads are formed in the inner wall of the longitudinal through hole (13) of the tail portion (11); and a supporting annular pipe (3) used for supporting a corrugated hose is inserted in the end of the corrugated hose, and the outer wall of the end of the corrugated hose is sequentially sleeved with a sealing ring (4), a spacer (5), a compression nut (6), a clip (7) and a compression cap (8). Compared with the prior art, the corrugated hose sealing joint ensures the locking fixation between the joint body and the corrugated hose, achieves reliable sealing, and prevents the corrugated hose from deforming due to extrusion of the sealing ring via the supporting annular pipe.

Description

technical field [0001] The invention relates to a corrugated hose sealing joint. Background technique [0002] In the field of locomotives and urban rail, the speed sensor for the traction motor is required to be miniaturized due to the limited installation and operation space. With the increasing requirements of the existing operating environment, it is necessary to realize the common ground connection between the cable shielding layer and the speed sensor housing in the miniaturized space of the speed sensor to achieve good EMC performance; at the same time, in order to achieve cable protection, it is necessary Add a corrugated hose, and the connection between the corrugated hose and the outlet end of the speed sensor requires good fixing, locking and sealing. [0003] However, the existing corrugated hose connector is a common standard, and there are three disadvantages for the connection with the speed sensor: 1) The corrugated hose connector is mainly assembled with th...

AI Technical Summary

Problems solved by technology

[0003] However, the existing corrugated hose connector is a common standard, and there are three disadvantages for the connection with the speed sensor: 1) The corrugated hose connector is mainly assembled with the hose connector, and when connected with the speed sensor, the speed sensor shell The internal and external diameters do not match the corrugated hose joints, making it difficult to miniaturize the speed sensor; 2) The corrugated hose used to protect the cable cannot be directly fixed, locked and sealed, resulting in the corrugated hose at the outlet end of the speed sensor It cannot be fixed, which will bring the hidden danger of the cable being stressed, and the sealing performance cannot meet the requirements; 3) The existing corrugated hose joint is long, and the contact resistance when the cable shielding layer is connected to the housing is relatively large. It will seriously affect the common ground effect between the cable shielding layer and the speed sensor housing, resulting in weakened EMC performance

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