Joint structure for power cable connection

Abstract

The utility model discloses a joint structure for power cable connection. The joint structure comprises a connecting piece and two locking heads. The connecting piece is provided with through holes for two cables to penetrate in oppositely, openings in the end portions of the two sides of the connecting piece are coaxially provided with annular grooves, fixing rings are formed on the inner sides of the annular grooves, the outer walls of the fixing rings are sleeved with springs, the fixing rings are axially and annularly provided with a plurality of open grooves, the groove bottoms of the open grooves are provided with inclined faces, and pressing blocks are arranged in the open grooves in a sliding fit mode. One end of the spring abuts against the pressing block. When the locking head is screwed into the annular groove, the locking head enables the multiple pressing blocks to move in the corresponding open grooves through the springs, and the pressing blocks make contact with the groove bottom slopes of the open grooves and move in the radial direction to press the cable tightly. According to the utility model, cable connection can be realized by screwing the two locking heads, the locking is firm and not easy to slip, the operation is simple and convenient, the dustproof and waterproof effects are realized, and the use effect is remarkable.

Description

Technical Field

[0001] The utility model relates to the technical field of power cables, in particular to a joint structure for connecting power cables. Background Art

[0002] The cable joint in the middle of the cable line is called the intermediate joint, and the cable joints at both ends of the line are called terminal heads. The cable joint is used to lock and fix the incoming and outgoing lines. Its main function is to make the line unobstructed, keep the cable sealed, and ensure the insulation level at the cable joint so that it can operate safely and reliably. In some scenarios, the cable is suspended in the air. This type of cable joint is affected by the gravity of the cable itself. If the conventional cable joint fixing method is used, the cables on both sides are prone to loosening, resulting in power outages.

[0003] The patent with authorization announcement number CN215185805U discloses a shockproof power cable connector, which is characterized in that the structure includes an outer shell, a buffer layer, a rubber ring, a shockproof cylinder, a connecting sleeve, an insulating thermal conductive ring, and a nut; the buffer layer and the shockproof cylinder can effectively prevent the influence of vibration on the cable connection, and at the same time, the waterproof coating coated on the surface of the buffer layer and the outer layer of the thermal conductive ring and the rubber rings at both ends of the line inlet can all have a waterproof effect. The connecting sleeves of the cables on both sides are fixed only by the shockproof cylinder. The cables on both sides are easy to slip when subjected to force, affecting use. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a joint structure for power cable connection. The cable connection can be achieved by tightening two locking heads. The locking is firm and not easy to slip. The operation is simple and convenient. It also has the effect of dustproof and waterproof. The use effect is significant and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a connector structure for connecting power cables, comprising a connector and two locking heads; the connector has a through hole for two cables to pass through relative to each other, both end openings of the connector are coaxially provided with annular grooves, and a fixing ring is formed on the inner side of the annular groove, the outer wall of the fixing ring is sleeved with a spring, and the fixing ring is axially provided with a plurality of open grooves, the bottom of the open groove has an inclined surface, a pressure block is slidably fitted in the open groove, and one end of the spring contacts the pressure block; when the locking head is screwed into the annular groove, the locking head causes the plurality of pressure blocks to move in the corresponding open grooves through the spring, and the pressure blocks contact the inclined surface of the bottom of the open groove and move radially to compress the cable.

[0006] Preferably, the pressing block has a wedge-shaped block adapted to the groove bottom inclined surface of the open groove, and the pressing block is also provided with a boss, which radially extends out of the open groove and contacts the spring.

[0007] Preferably, the locking head comprises an end cover and a threaded sleeve, the threaded sleeve is an external thread, the threaded sleeve is threadedly connected to the inner wall of the annular groove, and the end cover has a through hole for the cable to pass through.

[0008] Preferably, a sealing ring 1 is provided between the end cover and the end opening of the connecting piece, and a sealing ring 2 is provided between the end cover and the fixing ring.

[0009] Preferably, the opening grooves at one end of the connecting member and the pressing blocks are respectively provided with three.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: two cables are inserted into the connector in opposite directions, and the locking and fixing operation of the two cables after docking is realized by screwing in the two locking heads respectively, that is, the locking head is rotated, and the locking head is fed in the annular groove. When the locking head moves, the pressure block is moved in the open groove by the spring. After the pressure block contacts the inclined surface of the bottom of the open groove, the pressure block starts to move radially and presses the cable. The operation is simple. The cable connection can be realized by tightening the two locking heads. The locking is firm and not easy to slip. In addition, sealing ring 1 and sealing ring 2 are used to ensure sealing. It has dustproof and waterproof effects and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 This is a cross-sectional view of the utility model;

[0013] Figure 3 It is an enlarged schematic diagram of the local structure of the utility model.

[0014] In the figure: 1 connecting piece, 1.1 ring groove, 1.2 fixing ring, 1.3 opening groove, 2 locking head, 2.1 end cover, 2.2 threaded sleeve, 3 sealing ring 1, 4 sealing ring 2, 5 spring, 6 pressure block, 6.1 boss, 6.2 wedge block. DETAILED DESCRIPTION

[0015] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction.

[0016] See also Figure 1-3The utility model provides a technical solution: a connector structure for connecting power cables, comprising a connector 1 and two locking heads 2; the connector 1 has a through hole for two cables to pass through relatively, both end openings of the connector 1 are coaxially provided with annular grooves 1.1, and a fixing ring 1.2 is formed inside the annular groove 1.1, the outer wall of the fixing ring 1.2 is sleeved with a spring 5, and the fixing ring 1.2 is axially provided with a plurality of opening grooves 1.3, the bottom of the opening groove 1.3 has an inclined surface, and a pressure block 6 is slidably fitted in the opening groove 1.3, and one end of the spring 5 contacts the pressure block 6; when the locking head 2 is screwed into the annular groove 1.1, the locking head 2 causes the plurality of pressure blocks 6 to move in the corresponding opening grooves 1.3 through the spring 5, and the pressure blocks 6 contact the inclined surface of the bottom of the opening groove 1.3 and move radially to compress the cable;

[0017] The two cables are inserted into the connector 1 in opposite directions, and then the two locking heads 2 are screwed in respectively to realize the locking and fixing operation after the two cables are butted. When the locking head 2 is rotated, it feeds in the annular groove 1.1. When the locking head 2 moves, the pressing block 6 is moved in the opening groove 1.3 through the spring 5. After the pressing block 6 contacts the groove bottom inclined surface of the opening groove 1.3, the pressing block 6 starts to move radially and press the cable. The spring 5 is provided to increase the buffer deformation capacity to avoid the pressing block 6 from hard squeezing the cable. The operation is simple. The cable connection can be realized by tightening the two locking heads 2. The locking is firm and not easy to slip.

[0018] Furthermore, the pressing block 6 has a wedge-shaped block 6.2 adapted to the groove bottom inclined surface of the opening groove 1.3, and the pressing block 6 is also provided with a boss 6.1, which radially extends out of the opening groove 1.3, and the boss 6.1 abuts against the spring 5. Through the cooperation between the wedge-shaped block 6.2 and the groove bottom inclined surface of the opening groove 1.3, the axial movement of the pressing block 6 can be converted into the radial movement of the wedge-shaped block 6.2;

[0019] Furthermore, the locking head 2 includes an end cap 2.1 and a threaded sleeve 2.2. The threaded sleeve 2.2 is an external thread, and the threaded sleeve 2.2 is threadedly connected to the inner wall of the annular groove 1.1. The end cap 2.1 has a through hole for the cable to pass through. When the locking head 2 is screwed in, the threaded sleeve 2.2 cooperates with the inner wall thread of the annular groove 1.1;

[0020] Furthermore, a sealing ring 1 3 is provided between the end cover 2.1 and the end opening of the connector 1, and a sealing ring 2 4 is provided between the end cover 2.1 and the fixing ring 1.2. When the locking head 2 is screwed in, the end cover 2.1 and the outer edge of the end opening of the connector 1 are sealed by the sealing ring 1 3, and the end of the end cover 2.1 and the end of the fixing ring 1.2 are sealed by the sealing ring 2 4. It should be noted that the sealing ring 2 4 can fit with the cable when pressed, so as to have good dustproof and waterproof capabilities;

[0021] In addition, there are three opening grooves 1.3 and three pressing blocks 6 at one end of the connecting member 1.

[0022] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended to include all changes that fall within the meaning and scope of equivalent elements in the content of the present invention.

Claims

1. A joint structure for connecting a power cable, characterized in that: The invention comprises a connecting piece (1) and two locking heads (2); the connecting piece (1) has a through hole for two cables to pass through relative to each other; both end openings of the connecting piece (1) are coaxially provided with annular grooves (1.1); a fixing ring (1.2) is formed inside the annular groove (1.1); a spring (5) is sleeved on the outer wall of the fixing ring (1.2); a plurality of opening grooves (1.3) are axially provided around the fixing ring (1.2); the bottom of the opening groove (1.3) has an inclined surface; a pressure block (6) is slidably fitted in the opening groove (1.3); one end of the spring (5) contacts the pressure block (6); when the locking head (2) is screwed into the annular groove (1.1), the locking head (2) causes the plurality of pressure blocks (6) to move in the corresponding opening grooves (1.3) through the spring (5); the pressure blocks (6) contact the inclined surface of the bottom of the opening groove (1.3) and move radially to press the cables.

2. A joint structure for connecting a power cable according to claim 1, characterized in that: The pressing block (6) has a wedge-shaped block (6.2) adapted to the groove bottom inclined surface of the opening groove (1.3). The pressing block (6) is also provided with a boss (6.1), the boss (6.1) radially extends out of the opening groove (1.3), and the boss (6.1) abuts against the spring (5).

3. A power cable connection joint structure according to claim 1, characterized in that: The locking head (2) comprises an end cover (2.1) and a threaded sleeve (2.2); the threaded sleeve (2.2) is externally threaded, the threaded sleeve (2.2) is threadedly connected to the inner wall of the annular groove (1.1), and the end cover (2.1) has a through hole for the cable to pass through.

4. A joint structure for connecting a power cable according to claim 3, characterized in that: A sealing ring 1 (3) is provided between the end cover (2.1) and the end opening of the connecting piece (1), and a sealing ring 2 (4) is provided between the end cover (2.1) and the fixing ring (1.2).

5. A joint structure for connecting a power cable according to claim 1, characterized in that: The opening grooves (1.3) at one end of the connecting piece (1) and the pressing block (6) are each provided with three corresponding ones.

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