The utility model relates to the field of electricity, in particular to a cable connection device, in particular to a stainless steel metal waterproof joint.
Background technology:
Electrical equipment is connected to cables through connectors. In existing technology, the cable joints at both ends of the cable inlet are not round enough, and often due to the installation environment of the customer, the cable needs to be bent at 90 degrees to be installed. In addition, the vibration of the customer's equipment causes frequent wear and tear of the cable at the contact position with the joint, resulting in wear and scratch, breakdown and leakage, causing equipment damage.
Technical implementation elements:
The technical problem to be solved by this utility model is to provide a metal waterproof joint, which aims to solve the technical problem of cable joints being prone to wear and tear in the existing technology.
The metal waterproof joint of this utility model includes a joint body, which is composed of a tubular component. The tubular component includes a first end and a second end, wherein both the first and second ends of the tubular component are provided with external screw patterns, the middle part of the tubular component is provided with a circular protruding step, and the first end of the tubular component is provided with a nut, A sealing element is arranged between the nut and the tubular component, and the sealing element is in a tubular shape. The outer end of the sealing element is provided with a first protective ring, and the inner wall of the first protective ring is in a circular arc. The larger end of the inner diameter of the first protective ring extends to the outer end face of the nut. The second end of the tubular component is provided with a second protective ring and two locking nuts are set through the external thread, The inner wall of the second protective ring is in a circular arc shape, and the larger end of the inner diameter of the second protective ring extends to the outer end face of the second end of the tubular component.
Furthermore, the outer side of the tubular component is equipped with an O-ring seal, which is located between the annular protruding step and the locking nut.
Furthermore, both the first and second protective rings are composed of circular PTFE components.
The working principle of this utility model is that the cable passes through the locking nut, protective ring, sealing element, and joint body, and the arc shaped inner wall of the protective ring can prevent the cable from wearing at the joint. The protective ring composed of circular polytetrafluoroethylene components has high and low temperature resistance, wear resistance characteristics, operating temperature -190~250 ℃, allowing sudden cooling and heating, or alternating cold and hot. The electrical insulation can withstand 1500 V high voltage. The excellent mechanical properties of polytetrafluoroethylene are characterized by a small friction coefficient of 0 Between 01 and 0.10, it is the smallest among existing plastic materials and even all engineering materials.
Compared with existing technologies, the effect of this utility model is positive and obvious. The utility model is equipped with protective rings at both ends of the joint body, and the inner wall of the protective ring is curved to prevent the cable from wearing at the joint, effectively preventing wear and scratches caused by the repeated movement of the cable at the junction of the joint during equipment vibration, and preventing damage to the equipment after the cable is broken down and conductive to the joint due to wear or scratches.
Attached diagram description:
Figure 1 is a structural schematic diagram of the metal waterproof joint of this utility model.
Figure 2 is a schematic diagram of the cross-sectional structure of the metal waterproof joint of this utility model.
Specific implementation method:
Example 1:
As shown in Figures 1 and 2, the metal waterproof joint of this utility model includes a joint body, which is composed of a tubular component 1. The tubular component 1 includes a first end and a second end, wherein both the first and second ends of the tubular component 1 are provided with external threads, and the middle of the tubular component 1 is provided with a circular protruding step, The first end of the tubular component 1 is equipped with a nut. 3. There is a sealing element between the nut 3 and the tubular component 1. 4. The sealing element 4 is tubular in shape, and the outer end of the sealing element 4 is equipped with a first protective ring. 5. The inner wall of the first protective ring 5 is circular in shape, and the larger end of the inner diameter of the first protective ring 5 extends to the outer end face of the nut 3, The second end of the tubular component 1 is equipped with a second protective ring 7 and two locking nuts through external threads. The inner wall of the second protective ring 7 is circular, and the larger end of the inner diameter of the second protective ring 7 extends to the outer end face of the second end of the tubular component 1.
Furthermore, the outer side of the tubular component 1 is equipped with an O-ring 6. The O-ring 6 is located between the annular protruding step and the locking nut 2.
Furthermore, the first protective ring 5 and the second protective ring 7 are both composed of circular PTFE components.
The working principle of this embodiment is that the cable passes through the locking nut 3, the protective ring, the seal 4, and the connector body, and the arc shaped inner wall of the protective ring can prevent the cable from wearing at the connector. The protective ring composed of circular polytetrafluoroethylene components has high and low temperature resistance, wear resistance characteristics, operating temperature -190~250 ℃, allowing sudden cooling and heating, or alternating cold and hot. The electrical insulation can withstand 1500 V high voltage. The excellent mechanical properties of polytetrafluoroethylene are characterized by a small friction coefficient of 0 Between 01 and 0.10, it is the smallest among existing plastic materials and even all engineering materials.