Waterproof joint

Abstract

The utility model relates to a waterproof joint. The technical problem to be solved by the utility model is to provide a flange type waterproof joint with large clamping force. According to the technical scheme, the connector comprises a connector body, a lower flat gasket, a sealing ring, a coil clamping ring, an upper flat gasket and a connector nut, a flange end face is arranged outside the connector body, the connector body is provided with a connector end baffle and a sealing ring positioning groove, a connector main through hole is formed in the connector end baffle, a sealing ring extrusion groove is formed in the outer wall of the sealing ring, and the coil clamping ring is arranged in the sealing ring extrusion groove. A sealing ring through hole is formed in the sealing ring, and a coil clamping positioning groove is formed in the inner wall, at the sealing ring extrusion groove, of the sealing ring through hole. The utility model has the advantages that the flange end face design replaces the traditional connection structure of external threads and locking nuts, so that the installation efficiency is improved, and the installation space in the cabinet is reduced; and due to the design of the coil clamping ring, when the connector is tightened, the clamping force on the cable can be greatly improved through extrusion, so that the cable is not easy to loosen.

Description

Technical Field

[0001] The utility model relates to a waterproof joint. Background Art

[0002] With the popularity of new energy vehicles, charging piles have become indispensable facilities. At the connection point between the charging pile cabinet and the charging gun cable, the connection port needs to be dustproof, waterproof and anti-loosening treatment. At present, the existing charging pile waterproof connector mainly adopts threaded connection. Due to the large hexagonal opposite sides of the connector nut and the cable passing inside, there is no suitable automatic installation tool. Two people are required to work together during installation. At the same time, a certain amount of space margin must be met inside the charging pile cabinet. The installation is time-consuming and labor-intensive, and the efficiency is low. It cannot meet the requirements of high efficiency and low cost. In addition, the existing waterproof connector has a small clamping force on the cable, and the cable is easily loosened by pulling, and the service life is short. Improvements and optimizations are made for this. Utility Model Content

[0003] In order to solve the above problems, the technical problem to be solved by the utility model is to provide a flange type waterproof joint with a large clamping force.

[0004] The technical solution adopted by the utility model waterproof joint: It is characterized by comprising a joint body, a lower flat washer, a sealing ring, a clamping coil, an upper flat washer and a joint nut connected to the joint body, the joint body is provided with a flange end face on the outside, the joint body is provided with a joint end baffle and a sealing ring positioning groove for inserting the sealing ring, the joint end baffle is provided with a joint main through hole, the outer wall of the sealing ring is provided with a sealing ring extrusion groove, the sealing ring is provided with a sealing ring through hole with the same diameter as the main through hole of the joint, and the sealing ring through hole is provided with a clamping coil positioning groove on the inner wall of the sealing ring extrusion groove;

[0005] The clamping coil includes a clamping coil body corresponding to the clamping coil positioning groove and a clamping tooth group arranged around an arc on the inner side of the clamping coil body, the lower flat washer is placed between the joint end baffle and the lower end of the sealing ring, and the upper flat washer is placed between the upper end of the sealing ring and the joint nut.

[0006] The wire clamping tooth group comprises a large wire clamping tooth and a small wire clamping tooth that are adjacently arranged, and both the large wire clamping tooth and the small wire clamping tooth are triangular structures.

[0007] The inner diameter of the clamping coil at the small clamping teeth is the same as the inner diameter of the sealing ring through hole, the tooth height of the small clamping teeth is 0.5 mm, and the tooth height of the large clamping teeth is 0.8 mm.

[0008] The joint nut comprises a nut threaded portion threadedly connected to the end of the sealing ring positioning groove and a nut tightening portion for easy tightening.

[0009] The lower flat pad and the upper flat pad are both made of polytetrafluoroethylene sheets.

[0010] The joint nut also includes a nut wire portion for facilitating the introduction of the cable, and the nut wire portion is a bell-mouth structure.

[0011] The flange end surface is a square structure.

[0012] The advantages of the waterproof connector of the utility model are: the flange end face design replaces the traditional external thread plus locking nut connection structure, so that the installation efficiency is improved and the installation space in the cabinet is reduced; the design of the clamping coil can greatly improve the clamping force of the cable through extrusion when the connector is tightened, making the cable not easy to loosen and the service life is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0014] Figure 1 This is an exploded view of the utility model waterproof connector;

[0015] Figure 2 It is a structural schematic diagram of the main body of the connector of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the sealing ring of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the clamp coil of the utility model;

[0018] Figure 5 yes Figure 4 A magnified image of

[0019] Figure 6 It is a structural schematic diagram of a joint nut of the utility model. DETAILED DESCRIPTION

[0020] like Figure 1-6As shown, the waterproof joint involved in the utility model includes a joint body 1, a lower flat gasket 2, a sealing ring 3, a clamping coil 4, an upper flat gasket 5 and a joint nut 6 connected to the joint body 1, the joint body 1 is provided with a flange end face 8 on the outside, the joint body 1 is provided with a joint end baffle 9 and a sealing ring positioning groove 10 for inserting the sealing ring 3, the joint end baffle 9 is provided with a joint main through hole 11, the outer wall of the sealing ring 3 is provided with a sealing ring extrusion groove 12, the sealing ring 3 is provided with a sealing ring through hole 13 with the same diameter as the main through hole 11 of the joint, and the sealing ring through hole 13 is provided with a clamping coil positioning groove 14 on the inner wall at the sealing ring extrusion groove 12; the clamping coil 4 includes a flange end face 8 connected to the clamping coil 4, and the flange end face 8 is connected to the clamping coil 4. The coil positioning groove 14 corresponds to the coil clamping body 16 and the wire clamping tooth group 17 arranged around an arc on the inner side of the coil clamping body 16, the lower flat washer 2 is placed between the joint end baffle 9 and the lower end of the sealing ring 3, the upper flat washer 5 is placed between the upper end of the sealing ring 3 and the joint nut 6, and the flange end face 8 is designed to replace the traditional external thread plus locking nut connection structure, so that the installation efficiency is improved and the installation space in the cabinet is reduced; the design of the coil clamping wire 4 can greatly improve the clamping force of the cable by squeezing when the waterproof joint is tightened, so that the cable is not easy to loosen, and the design of the lower flat washer 2 and the upper flat washer 5 can reduce the wear on the sealing ring 3 during tightening, and effectively improve the service life of the product.

[0021] The wire clamping tooth group 17 includes adjacently arranged large wire clamping teeth 19 and small wire clamping teeth 20. The large wire clamping teeth 19 and the small wire clamping teeth 20 are both triangular structures. Since the large wire clamping teeth 19 and the small wire clamping teeth 20 penetrate into the cable sheath layer to different depths, the clamping force on the cable is improved in disguise.

[0022] The inner diameter of the clamping coil 4 at the small clamping teeth 20 is the same as the inner diameter of the sealing ring through hole 13, the tooth height of the small clamping teeth 20 is 0.5mm, and the tooth height of the large clamping teeth 19 is 0.8mm. When the waterproof joint is not tightened, the cable will not be difficult to pass through. When the waterproof joint is tightened, the small clamping teeth 20 and the large clamping teeth 19 are squeezed to penetrate the cable sheath layer but not puncture it, which will not affect the transmission of the cable.

[0023] The joint nut 6 includes a nut threaded portion 22 threadedly connected to the end of the sealing ring positioning groove 10 and a nut tightening portion 23 for easy tightening.

[0024] The lower flat pad 2 and the upper flat pad 5 are both made of polytetrafluoroethylene sheets, which have higher wear resistance.

[0025] The joint nut 6 also includes a nut wire portion 24 for facilitating the introduction of cables, and the nut wire portion 24 is a bell-mouth structure.

[0026] The flange end face 8 is a square structure.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. A waterproof joint, characterized in that: The invention comprises a joint body (1), a lower flat gasket (2), a sealing ring (3), a clamping coil (4), an upper flat gasket (5) and a joint nut (6) connected to the joint body (1), wherein the joint body (1) is provided with a flange end surface (8) on the outside, the joint body (1) is provided with a joint end baffle (9) and a sealing ring positioning groove (10) for inserting the sealing ring (3), the joint end baffle (9) is provided with a joint main through hole (11), the outer wall of the sealing ring (3) is provided with a sealing ring extrusion groove (12), the sealing ring (3) is provided with a sealing ring through hole (13) having the same diameter as the joint main through hole (11), and the sealing ring through hole (13) is provided with a clamping coil positioning groove (14) on the inner wall at the sealing ring extrusion groove (12); The clamping coil (4) comprises a clamping coil body (16) corresponding to the clamping coil positioning groove (14) and a clamping tooth group (17) arranged around a circular arc on the inner side of the clamping coil body (16); the lower flat washer (2) is placed between the joint end baffle (9) and the lower end of the sealing ring (3); and the upper flat washer (5) is placed between the upper end of the sealing ring (3) and the joint nut (6).

2. The waterproof joint according to claim 1, characterized in that: The wire clamping tooth group (17) comprises large wire clamping teeth (19) and small wire clamping teeth (20) which are arranged adjacent to each other, and the large wire clamping teeth (19) and the small wire clamping teeth (20) are both triangular structures.

3. The waterproof joint according to claim 2, characterized in that: The inner diameter of the clamping coil (4) at the small clamping tooth (20) is the same as the inner diameter of the sealing ring through hole (13); the tooth height of the small clamping tooth (20) is 0.5 mm, and the tooth height of the large clamping tooth (19) is 0.8 mm.

4. The waterproof joint according to claim 1, characterized in that: The joint nut (6) comprises a nut threaded portion (22) threadedly connected to the end of the sealing ring positioning groove (10) and a nut tightening portion (23) for easy tightening.

5. The waterproof joint according to claim 1, characterized in that: The lower flat washer (2) and the upper flat washer (5) are both made of polytetrafluoroethylene sheets.

6. The waterproof joint according to claim 4, characterized in that: The joint nut (6) further comprises a nut wire portion (24) for facilitating the introduction of cables, and the nut wire portion (24) is a bell-mouth structure.

7. The waterproof joint according to claim 1, characterized in that: The flange end surface (8) is a square structure.

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