Cable fixing head

Abstract

The invention relates to the field of electric equipment, in particular to a cable fixing head. The cable fixing head comprises a nut, a waterproof ring, a tightening nut and a tubular body with outer threads. A clamping claw with gaps, which extends along the axial direction of the body, is disposed at a clamp end of the body. A fixed protrusion extending outwards is disposed on the outer periphery of the body. The nut is matched with a fixed end of the body. Positioning protrusions are disposed on the inner side of the clamping claw. A limit groove which opens towards the positioning protrusions is arranged on the inner wall of the body. Positioning grooves which are matched with the positioning protrusions are arranged at one end of the waterproof ring. The other end of the waterproof ring is inserted into the limit groove. The tightening nut is tightened at the clamp end of the body. The waterproof ring can be prevented from being pushed out by a cable, the water ring is less prone to deformation, and accordingly spacing between the waterproof ring and the body is avoided so as to improve airtightness between the waterproof ring and the body, dust, moisture and the like are prevented from entering a box, and stability of electric equipment elements in the box is improved.

Description

technical field [0001] The invention relates to the field of electric devices, and more specifically relates to a cable fixing head. Background technique [0002] At present, cable fixing heads are usually used for fixing cables and boxes, such as Figure 1 to Figure 6 As shown, the cable gland in the prior art includes a hex nut 01, an O-shaped gasket 02, a main body 03, a waterproof ring 04 and a tight nut 05; wherein, the main body 03 is a pipe with external threads, and the main body 03 There is an inwardly protruding positioning ring 032 inside to limit the position of one end of the waterproof ring 04 inserted in the main body 03. In order to fix the box, it can usually be placed on the peripheral surface of the main body 03 A fixed protrusion 031 is set on it (it is convenient to use a wrench to operate during installation), and a clamping claw 033 extending along the axial direction of the main body 03 is provided at the clamping end of the main body 03 with a certai...

AI Technical Summary

Problems solved by technology

[0006] In addition, since the waterproof ring 04 is limited by the positioning ring 032 protruding inward from the inside of the main body 03, a stepped surface is formed between the inside of the main body 03 and the waterproof ring 04, so that when the cable passes through the main body 03, It is easier for the cable to push out the waterproof ring 04, which affects the sealing performance of the cable gland

[0007] In addition, during the working process, mechanical vibration often occurs. Under the action of mechanical vibration, the tightening nut 05 tightened on the main body 03 will automatically retreat and loosen, which affects the sealing performance of the cable gland. The tight nut 05 falls off, causing the cable to be unable to be fixed with the box, which cannot meet the normal use requirements

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