A cable waterproof joint with anti-loosening function

Abstract

The utility model provides a kind of cable waterproof joint with anti-loosening function, including tubular joint body, and the outer wall of joint body is provided with boss in circumferential direction, and the outer wall of joint body is provided with sealing groove in the right side of boss, and sealing ring is arranged in sealing groove, and the outer wall of joint body is provided with annular shoulder in the left side of boss, and annular shoulder is eccentric structure, and the outer wall of left end of annular shoulder is provided with first taper surface, and the right end inner wall of lock nut is connected to the left side of joint body, and the right end inner wall of lock nut is provided with second taper surface, and second taper surface cooperates with first taper surface, and the left end of inner wall of lock nut is provided with limit bulge ring, and circular ring gasket and sealing element are arranged between joint body and limit bulge ring in lock nut. Second taper surface cooperates with the first taper surface on joint body and is clamped after lock nut is locked to bottom, increases the connection firmness of lock nut and joint body, so that lock nut and joint body are not easy to loosen, reduce the risk of charging pile water failure.

Description

Technical Field

[0001] This utility model relates to the field of charging pile technology, and in particular to waterproof charging cable technology, especially a waterproof cable connector with anti-loosening function. Background Technology

[0002] With the popularization of new energy vehicles, charging piles have become an essential facility. Dustproof, waterproof, and anti-loosening measures are required at the connection points between the charging pile cabinet and the charging gun cable. In existing technologies, waterproof connectors mainly use threaded connections. However, long-term outdoor conditions and user use can easily cause the threads to gradually loosen, eventually failing to tighten the cable and resulting in sealing failure. This increases the risk of water ingress into the charging pile, increases the frequency of inspections, and raises maintenance costs. Utility Model Content

[0003] The purpose of this utility model is to provide a waterproof cable connector with anti-loosening function to solve the technical problem that waterproof connectors in the prior art are prone to loosening after long-term use.

[0004] This utility model provides a waterproof cable connector with anti-loosening function, including a tubular connector body. A boss is provided on the outer wall of the connector body along the circumferential direction. A sealing groove is provided on the right side of the boss on the outer wall of the connector body, and a sealing ring is provided in the sealing groove. A first external thread is provided on the right side of the sealing groove on the outer wall of the connector body. An annular shoulder is provided on the left side of the boss on the outer wall of the connector body. The annular shoulder has an eccentric structure. A first conical surface is provided on the outer wall of the left end of the annular shoulder. A second external thread is provided on the outer wall of the connector body on the left side of the annular shoulder. A locking nut is connected to the left side of the connector body. A second conical surface is provided on the inner wall of the right end of the locking nut. The second conical surface mates with the first conical surface. An internal thread is provided on the inner wall of the locking nut on the left side of the second conical surface. The internal thread mates with the second external thread. A limiting ring is provided on the left end of the inner wall of the locking nut. A circular washer and a sealing element are provided between the connector body and the limiting ring in the locking nut. The circular washer is located on the left side of the sealing element.

[0005] Furthermore, an annular groove is provided on the outer wall of the seal along the circumferential direction.

[0006] Furthermore, the annular gasket is made of polytetrafluoroethylene (PTFE).

[0007] Compared with the prior art, the advantages of this invention are positive and obvious. After the locking nut is fully tightened, the second conical surface engages with the first conical surface on the connector body, increasing the connection between the locking nut and the connector body, making it less likely for the locking nut and the connector body to loosen, and reducing the risk of water ingress failure of the charging pile. Attached Figure Description

[0008] Figure 1This is an exploded structural diagram of a waterproof cable connector with anti-loosening function according to the present invention.

[0009] Figure 2 This is a cross-sectional schematic diagram of a waterproof cable connector with anti-loosening function according to the present invention. Detailed Implementation

[0010] The present invention will be further described below with reference to embodiments, but the present invention is not limited to these embodiments. Any similar variations using the present invention should be included within the protection scope of the present invention. The use of directions such as up, down, front, back, left, right, center, inside, and outside in the present invention is only for the convenience of clear description and is not intended to limit the technical solution of the present invention.

[0011] like Figures 1-2 As shown, this utility model provides a waterproof cable connector with anti-loosening function, including a tubular connector body 1. A boss 2 is provided on the outer wall of the connector body 1 along the circumferential direction. A sealing groove 3 is provided on the outer wall of the connector body 1 on the right side of the boss 2, and a sealing ring 4 is provided in the sealing groove 3. A first external thread 5 is provided on the outer wall of the connector body 1 on the right side of the sealing groove 3. An annular shoulder 6 is provided on the outer wall of the connector body 1 on the left side of the boss 2. The annular shoulder 6 has an eccentric structure, and a first conical surface 7 is provided on the outer wall of the left end of the annular shoulder 6. A second external thread 8 is provided on the left side of the shoulder 6. A locking nut 9 is connected to the left side of the connector body 1. A second conical surface 10 is provided on the inner wall of the right end of the locking nut 9. The second conical surface 10 mates with the first conical surface 7. An internal thread 11 is provided on the left side of the second conical surface 10 on the inner wall of the locking nut 9. The internal thread 11 mates with the second external thread 8. A limiting protrusion ring 12 is provided on the left end of the inner wall of the locking nut 9. A circular gasket 13 and a sealing element 14 are provided between the connector body 1 and the limiting protrusion ring 12 in the locking nut 9. The circular gasket 13 is located further away from the sealing element 14.

[0012] Furthermore, an annular groove 15 is provided on the outer wall of the sealing member 14 along the circumferential direction.

[0013] Furthermore, the annular gasket 13 is made of polytetrafluoroethylene material.

[0014] The working principle of this utility model:

[0015] During installation, the annular gasket 13 and the seal 14 are first inserted into the locking nut 9 in sequence. Then, the locking nut 9 is connected to the second external thread 8 of the connector body 1 through the internal thread 11. The sealing ring 4 is embedded in the sealing groove 3 of the connector body 1. The cable is passed from outside the cabinet through the locking nut 9, the annular gasket 13, the seal 14, the connector body 1, the sealing ring 4, and the threaded hole of the cabinet. The connector body 1 is fixed in the threaded hole on the cabinet through the first external thread 5. The connector body 1 and the cabinet press against the sealing ring 4 to achieve a seal. Then, the cable is adjusted to the appropriate position, and the locking nut 9 is tightened. The annular gasket 13 and the left end face of the connector body 1 press against the seal 14 to achieve cable locking and sealing. After the locking nut 9 is fully tightened, the second conical surface 10 engages with the first conical surface 7 on the connector body 1 to increase the connection between the locking nut 9 and the connector body 1, making it less likely for the locking nut 9 and the connector body 1 to loosen, and reducing the risk of water ingress failure of the charging pile.

[0016] The eccentric annular shoulder 6 further increases the connection strength between the locking nut 9 and the connector body 1. The annular groove 15 on the seal 14 allows for a larger contact area between the seal 14 and the cable when the locking nut 9 compresses the seal 14, reducing damage to the cable.

Claims

1. A waterproof cable connector with anti-loosening function, characterized in that, The connector includes a tubular body with a boss on its outer wall along the circumferential direction. A sealing groove is located on the right side of the boss on the outer wall of the connector, containing a sealing ring. A first external thread is located on the right side of the sealing groove on the outer wall of the connector. An annular shoulder, eccentric in structure, is located on the left end of the annular shoulder's outer wall, containing a first conical surface. A second external thread is located on the left side of the annular shoulder on the outer wall of the connector. A locking nut is connected to the left side of the connector. A second conical surface is located on the right end of the locking nut's inner wall, engaging with the first conical surface. An internal thread is located on the left side of the second conical surface on the inner wall of the locking nut, engaging with the second external thread. A limiting ring is located on the left end of the locking nut's inner wall. A circular washer and a seal are located between the connector and the limiting ring within the locking nut, with the circular washer located to the left of the seal.

2. The cable waterproof joint with anti-loosening function according to claim 1, characterized in that, The outer wall of the seal is provided with an annular groove along the circumferential direction.

3. The cable waterproof joint with anti-loosening function according to claim 1, characterized in that, The circular gasket is made of polytetrafluoroethylene.

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