Electrical equipment and its cable glands

Abstract

The invention discloses a cable fixing head for connecting cables and box walls, which comprises a main body provided with a through hole and a sealing ring used to be sleeved on the outside of the cable. The middle part of the main body is provided with a radial protrusion, and The lower part is provided with a clamping piece for cooperating with the radial protrusions to clamp the box wall; the lower end surface of the sealing ring and the upper end surface of the main body are clamped and fixed in the radial direction, and the upper end of the sealing ring is provided with a tightening nut to tighten The internal thread of the nut cooperates with the external thread on the upper part of the main body, and the outer peripheral surface of the sealing ring is provided with at least one circle of circumferential grooves. The above-mentioned cable fixing head realizes that when the sealing ring is compressed in the axial direction, it will not move or slip in the radial direction, so that the pressure received is converted into a deformation of its own inward contraction, so that the sealing ring and the cable installed inside are tightly fitted , in order to achieve strict sealing, waterproof and moisture-proof. The invention also discloses an electrical device comprising the above-mentioned cable fixing head, and the electrical device has good sealing performance.

Description

technical field [0001] The invention relates to the technical field of cable equipment, in particular to a cable fixing head. In addition, the present invention also relates to an electrical device comprising the above-mentioned cable fixing head. Background technique [0002] In modern equipment, cables are usually used to connect electrical equipment for power transmission, and the connection between cables and electrical equipment has become a key step in the use of cables. [0003] In the common connection device between cables and electrical equipment, the cable fixing head is used to fix the two. The cable fixing head is widely used in the fixing and protection of wires and cables of mechanical equipment electrical, ship electrical, and anti-corrosion equipment. The main function is to keep the cable outlet hole sealed and waterproof and dustproof, so that the machine can run safely and reliably. [0004] The cable gland mainly includes a nut, a sealing ring, an inne...

AI Technical Summary

Problems solved by technology

However, many existing types of cable glands often have the defect that they cannot be effectively waterproof and moisture-proof, and it is easy to cause external dust to enter the box, resulting in internal pollution of the box.

Secondly, there is a step on the inner wall where the sealing ring and the main body of the fixing head cooperate. When the cable passes through the main body of the fixing head and then enters the sealing ring, the cable is easily blocked by the step, which makes the cable push the sealing ring out and shift, and even cause The sealing ring is completely detached, which makes the installation process of the cable more difficult and time-consuming

[0005] In addition, the cable fixing head does not have a locking function. When the electrical equipment vibrates during use, the cable fixing head will loosen, which will seriously affect the use of the product.

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