CN205070378U - Waterproof cable termination - Google Patents

Abstract

The utility model provides a waterproof cable termination, this cable termination include binding post, waterproof cover, cable and the terminal body, the terminal body is connected with the insulating layer of cable one end, waterproof cover from the conductor of the cable other end embolia and with the terminal body coupling, the binding post cover is established at waterproof cover outsidely, and waterproof cover is provided with the full skirt with binding post's junction. The utility model discloses waterproof cable termination simple structure, safe and reliable can improve waterproof performance's cable termination when not reducing the electric property to extension cable termination's life and maintenance cycle, reduce cost of maintenance.

Description

A waterproof cable terminal

technical field

The utility model relates to the technical field of power cable accessories, in particular to a cable terminal.

Background technique

The cold-shrinkable cable terminal body is a commonly used form of cable terminal at present, and the cold-shrinkable cable terminal body cooperates with the cable by the elastic holding force of the material (rubber). Due to the excellent material properties, the (rubber) terminal body can be pre-expanded with a supporting frame to form various cable accessories. When installing on site, put these pre-expanded parts on the treated cable ends or joints, and then pull out the supporting frame, and the (rubber) terminal body will naturally shrink to the cable and press it tightly on the cable. Because the pre-expansion of the cold-shrinkable cable terminal is relatively large, the specifications of each cold-shrinkable cable terminal body can be adapted to multiple cable cross-sections, so this cold-shrinkable cable terminal body is very popular in the market.

The outdoor application of the terminal needs to withstand the test of weather and environment, especially to prevent the entry of rainwater at the top of the terminal, which requires waterproof measures at the top to ensure the normal power operation of the cable. At present, the corresponding structure of waterproof measures for terminals with cold-shrinkable cable terminal bodies is shown in FIG. 1 . However, the waterproof effect of this waterproof method largely depends on the level of artificial lagging, which makes the stability of power operation poor. Moreover, only one layer of colloid 3 is used for waterproofing so that the safety factor is small, and sometimes the water ingress of the wire core affects the normal operation of the cable terminal due to damage or displacement of the colloid 3, which will cause the power grid to increase the frequency of power outages and increase the maintenance cost.

Utility model content

The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art, and provide a cable terminal with simple structure, safety and reliability, which can improve the waterproof performance without reducing the electrical performance, thereby prolonging the service life and maintenance cycle of the cable terminal , Reduce maintenance costs.

In order to achieve the above object, the utility model is realized through the following technical scheme: a waterproof cable terminal, characterized in that: it includes a terminal, a waterproof sleeve, a cable and a terminal body; the terminal body is connected to the insulating layer at one end of the cable The waterproof sleeve is inserted from the conductor at the other end of the cable and connected to the terminal body; the terminal is sleeved outside the waterproof sleeve, and an umbrella skirt is provided at the connection between the waterproof sleeve and the terminal.

In the above solution, the cable terminal adopts the terminal rubber part as the terminal body, so the original terminal rubber part of the product is not changed, and the original electrical performance is not reduced. The design of the cable terminal of the utility model is reasonable and ingenious, it is provided with a waterproof cover, and an umbrella skirt is provided between the waterproof cover and the terminal, which can achieve a good waterproof effect, thereby prolonging the service life and maintenance cycle of the cable terminal and reducing maintenance costs .

The connecting terminal is a bell type connecting terminal, which is provided with an accommodating cavity for sheathing a waterproof cover.

More specifically, the said shed shed is provided at the joint between the waterproof cover and the terminal means that the shed is provided outside the waterproof cover in the terminal accommodation cavity.

The outer diameter D of the shed is greater than the inner diameter d of the terminal accommodating cavity. The outer diameter D of the umbrella skirt is slightly larger than the inner diameter d of the terminal receiving cavity. The utility model makes full use of the scheme that the outer diameter of the small umbrella skirt on the waterproof cover is slightly larger than the inner diameter of the bell type terminal receiving cavity. The waterproof effect of the cable terminal can be further improved.

The inside of the waterproof cover is provided with a first cavity for installing the cable conductor and a second cavity for installing the cable insulation layer; the first cavity is located above the second cavity and communicated with the second cavity.

The cavity one is matched with the cable conductor; the cavity two is matched with the cable insulating layer.

The waterproof sleeve is inserted from the conductor at the other end of the cable and connected to the terminal body, which means that the first cavity and the second cavity of the waterproof sleeve are inserted from the conductor at the other end of the cable, and the second cavity is set at the terminal connected to the insulating layer. outside the terminal body.

The conductor of the cable protrudes from the cavity of the waterproof casing and penetrates into the interior of the terminal.

The terminal body is a cold-shrinkable cable terminal body. The utility model can cooperate with the cable through the elastic holding force of the material (rubber) of the cold-shrinkable cable terminal body, thereby ensuring low electrical performance.

A waterproof cable terminal of the utility model is used as follows: when installing, first install the cold-shrinkable cable terminal body on the cable insulation layer that has been stripped and cut in advance, then put a waterproof sleeve on the conductor at the other end of the cable, and finally put it on Upper bell-type terminal block and crimped and fixed to the cable conductor.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. The waterproof cable terminal of the utility model has the advantages of simple structure, safety and reliability, simple installation, and low requirements for operators.

2. The design of the waterproof cable terminal of the utility model is reasonable and ingenious, making full use of the outer diameter of the small umbrella skirt on the waterproof cover slightly larger than the inner diameter of the accommodation cavity of the bell-type terminal, so as to achieve the waterproof effect and extend the use of the cable terminal Life and maintenance cycle, reduce maintenance costs.

3. The waterproof cable terminal of the utility model does not change the original rubber part of the terminal body of the product, and does not reduce the original electrical performance.

Description of drawings

Figure 1 is a schematic diagram of the terminal structure of the currently used cold-shrinkable terminal body;

Fig. 2 is a structural schematic diagram of the utility model waterproof cable terminal;

Figure 3 is an enlarged view of A in Figure 2;

Fig. 4 is a structural schematic diagram of the waterproof cover of the present utility model;

Fig. 5 is a schematic diagram of the structure of the terminal block of the present invention;

Among them, 1 is an ordinary terminal, 2 is a conductor, 3 is a colloid, 4 is a sealing tube, 5 is an insulating layer, 6 is a terminal body, 7 is a bell type terminal, 7.1 is a housing cavity, 8 is a waterproof cover, 8.1 is cavity one, 8.2 is cavity one, and 9 is an umbrella skirt.

detailed description

The utility model is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Example

As shown in Figures 2 to 5, the waterproof cable terminal of the present utility model includes a bell-type terminal 7, a waterproof cover 8, a cable and a terminal body 6, wherein the terminal body 6 is connected to the insulating layer 5 at one end of the cable, and the waterproof cover 8 The conductor 2 at the other end of the cable is sleeved and connected to the terminal body 6 , and the bell type terminal 7 is sleeved outside the waterproof case 8 .

Compared with the common terminal (1 in Fig. 1), the bell-type terminal 7 of the present utility model is provided with an accommodating chamber 7.1 for setting the waterproof cover 8, and the waterproof cover 8 is connected with the bell cover. An umbrella skirt 9 is provided at the joint of the bell-type terminal 7, which specifically means that an umbrella skirt 9 is provided outside the waterproof cover 8 in the accommodation cavity 7.1 of the bell-type terminal 7. And the outer diameter D of the shed 9 > the inner diameter d of the accommodation cavity 7.1 of the bell-type terminal 7 . The utility model makes full use of the scheme that the outer diameter of the small umbrella skirt 9 on the waterproof cover 8 is slightly larger than the inner diameter of the bell type terminal 7 accommodation cavity 7.1, which can further improve the waterproof effect of the cable terminal.

The interior of the waterproof cover 8 of the present utility model is provided with a cavity one 8.1 for installing the cable conductor 2 and a cavity two 8.2 for installing the cable insulation layer 5, the cavity one 8.1 is matched with the cable conductor 2, and the cavity two 8.2 is matched with the cable conductor 2 The cable insulation layer 5 is matched, and the first cavity 8.1 is located above the second cavity 8.2 and communicated with the second cavity 8.2. The above-mentioned waterproof sleeve 8 is inserted from the conductor 2 at the other end of the cable and connected to the terminal body 6, which means that the cavity 1 8.1 and cavity 2 8.2 of the waterproof sleeve 8 are inserted from the conductor 2 at the other end of the cable, and the cavity 2 8.2 sets It is provided outside the terminal body 6 connected to the insulating layer 5 . And the conductor 2 of the cable stretches out from the waterproof cover 8 cavity-8.1 and penetrates the bell type terminal block 7 inside.

The terminal body 6 of the utility model is a cold-shrinkable cable terminal body. The utility model can cooperate with the cable through the elastic holding force of the material (rubber) of the cold-shrinkable cable terminal body, thereby ensuring low electrical performance.

A waterproof cable terminal of the utility model is used as follows: when installing, first install the cold-shrinkable cable terminal body 6 on the cable insulation layer 5 that has been stripped and cut in advance, and then put a waterproof sleeve on the conductor 2 at the other end of the cable 8. Finally, put on the bell type terminal 7 and crimp and fix it on the cable conductor 2.

The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the above-mentioned embodiment, and any other changes, modifications and substitutions made without departing from the spirit and principle of the present utility model , combination, and simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (9)

1. A waterproof cable terminal, characterized in that: it includes a connection terminal, a waterproof cover, a cable and a terminal body; the terminal body is connected to the insulating layer at one end of the cable; the waterproof cover is inserted into the conductor at the other end of the cable and It is connected with the terminal body; the terminal is sheathed outside the waterproof cover, and an umbrella skirt is arranged at the connection between the waterproof cover and the terminal. 2. The waterproof cable terminal according to claim 1, characterized in that: the terminal is a bell-type terminal, which is provided with an accommodating cavity for setting a waterproof cover. 3 . The waterproof cable terminal according to claim 2 , wherein the shed is provided at the connection between the waterproof cover and the terminal means that the shed is provided outside the waterproof cover in the terminal accommodation cavity. 4 . 4. The waterproof cable terminal according to claim 2, characterized in that: the outer diameter D of the shed is greater than the inner diameter d of the terminal receiving cavity. 5. The waterproof cable terminal according to claim 1, characterized in that: a cavity one for installing a cable conductor and a cavity two for installing a cable insulation layer are arranged inside the waterproof cover; the cavity one It is located above the second cavity and communicated with the second cavity. 6. The waterproof cable terminal according to claim 5, characterized in that: the first cavity matches the cable conductor; the second cavity matches the cable insulation layer. 7. The waterproof cable terminal according to claim 5, characterized in that: the waterproof sleeve is inserted from the conductor at the other end of the cable and connected to the terminal body, which means: cavity one and cavity two of the waterproof cover are connected to the cable The conductor at the other end is sleeved in, and the second cavity is sleeved outside the terminal body connected to the insulating layer. 8. The waterproof cable terminal according to claim 7, wherein the conductor of the cable protrudes from the cavity of the waterproof casing and penetrates into the terminal. 9. The waterproof cable terminal according to any one of claims 1 to 8, characterized in that: the terminal body is a cold-shrinkable cable terminal body.