Deep sea waterproof signal connector

Abstract

The utility model relates to the technical field of connectors, in particular to a deep sea waterproof signal connector. Comprising a connector socket and a connector plug which are connected with each other in a pluggable mode. The connector socket comprises a first metal shell and a first lock catch shell which is rotatably installed on the first metal shell. The outer surface of the first metal shell is at least provided with a first sealing ring and a second sealing ring, the first sealing ring and the second sealing ring are arranged in a front-back spaced mode, and the diameter of the second sealing ring is larger than that of the first sealing ring. The connector plug comprises a second metal shell, and the outer surface of the second metal shell is provided with a first lock catch groove. A first lock catch convex point which can be buckled into the first lock catch groove is arranged on the inner surface of the first lock catch shell; when the connector plug is plugged into the connector socket, the inner side surface of the second metal shell abuts against the first sealing ring and the second sealing ring, and the first lock catch salient point is buckled into the first lock catch groove. Compared with the prior art, a threaded anti-loosening mechanism does not need to be used for locking, so that the use reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a deep-sea waterproof signal connector. Background Art

[0002] A connector generally refers to all connection components and their accessory parts used for electronic signals and power supplies. Its main function is to play an electrical connection and signal transmission role between devices and components, components and cabinets, and systems and subsystems. It is one of the essential basic components for the electrical connection of the entire machine circuit system. Nowadays, connectors have been widely used in fields such as aerospace, military equipment, communication, computers, automobiles, industry, household appliances, etc.

[0003] With the acceleration of mankind's pace of exploring and developing the ocean and the widespread use of underwater electrical equipment and devices, connectors are needed at this time to connect underwater electricity with surface terminal equipment or power supplies. Moreover, for the deep-water environment, the connector needs to have good waterproof performance to prevent water from entering the equipment room and burning out the equipment, resulting in the signal being often on and off during ground testing. Currently, conventional deep-water connectors use a threaded anti-loosening mechanism to connect the plug and the socket through threaded connection. However, during the long-term use in a deep-water environment, it is inevitable that water will seep in through the gap between the plug and the socket, causing problems such as water flowing into the connector and burning out the equipment.

[0004] For example, a deep-water connector disclosed in Chinese invention CN115173134A has a first waterproof gasket provided at the threaded mating portion between the plug mechanism and the socket mechanism. When the plug mechanism and the socket mechanism are threadedly mated, due to the presence of the first waterproof gasket inside, it can block water from seeping into the interior of the connector, alleviating the problem of water seeping in through the connection between the plug and the socket. However, the inventor found during the actual R & D process that for this connector plug and connector socket applied to the deep-sea environment, the threaded anti-loosening mechanism is prone to rusting problems; when it is necessary to pull out the connection between the connector plug and the connector socket, the threaded anti-loosening mechanism will get stuck, affecting the plugging and unplugging operation of the connector plug and the connector socket. It is necessary to destroy the entire threaded anti-loosening mechanism to pull out the connector plug from the connector socket. And after destroying the threaded anti-loosening mechanism, a new threaded anti-loosening mechanism needs to be reinstalled between the connector plug and the connector socket to be used. It can be seen that the threaded anti-loosening mechanism has defects such as short service life and poor use reliability.

[0005] Therefore, it is necessary to study a new technical solution to solve the above problems. Summary of the Utility Model

[0006] In view of this, in view of the deficiencies of the existing technology, the main purpose of the present utility model is to provide a deep-sea waterproof signal connector, which effectively solves the technical defect that the anti-loosening mechanism of the connector applied to the deep-sea environment is prone to rust and then jams in the prior art.

[0007] To achieve the above object, the present utility model adopts the following technical solutions: A deep-sea waterproof signal connector includes a connector socket and a connector plug that are plugged into each other;

[0008] The connector socket includes a first metal shell and a first lock shell rotatably installed on the first metal shell; at least a first sealing ring and a second sealing ring are installed on the outer surface of the first metal shell, the first sealing ring and the second sealing ring are arranged at a front and rear interval, and the diameter of the second sealing ring is larger than that of the first sealing ring;

[0009] The connector plug includes a second metal shell, and a first lock groove is provided on the outer surface of the second metal shell; a first lock convex point that can be buckled into the first lock groove is provided on the inner surface of the first lock shell;

[0010] After the connector plug is inserted into the connector socket, the inner side surface of the second metal shell abuts against the first sealing ring and the second sealing ring, and the first lock convex point is buckled into the first lock groove.

[0011] The beneficial effects of the deep-sea waterproof signal connector provided by the present application are as follows: Compared with the prior art, by rotatably installing a first lock shell on the outer surface of the first metal shell of the connector socket, and providing a first lock convex point on the inner surface of the first lock shell; after the connector plug is inserted into the connector socket, the first lock shell can be rotated to buckle the first lock convex point into the first lock groove to complete the locking of the connector plug and the connector socket; with such a structure, there is no need to use a thread anti-loosening mechanism for locking, and when used in a deep-sea environment, it will not affect the subsequent separation of the connector plug and the connector socket due to rust problems, thereby improving the service life and use reliability of the locking mechanism between the connector plug and the connector socket;

[0012] Secondly, by at least providing a first sealing ring and a second sealing ring, and the diameter of the second sealing ring is larger than that of the first sealing ring, a stepped waterproof sealing effect is achieved, so as to ensure that after the connector plug is inserted into the connector socket, the gap between the first metal shell and the second metal shell can be effectively sealed, and no liquid will seep into its interior to corrode the terminals in the deep-sea environment, further improving the use reliability and service life of the connector socket and the connector socket.

[0013] As a preferred solution: The outer surface of the first metal shell is provided with a first stop convex part and a second stop convex part. The first stop convex part and the second stop convex part gradually become larger from front to back to form a stepped stop structure. A first installation notch for installing the first sealing ring is provided on the front side of the first stop part, and a second installation notch for installing the second sealing ring is provided on the front side of the second stop convex part.

[0014] As a preferred solution: The outer surface of the first metal shell is provided with a first limiting convex part, and the first limiting convex part is located on the front side of the first sealing ring. The inner side surface of the second metal shell is provided with a first limiting through groove, and the first limiting convex part can be inserted into the first limiting through groove.

[0015] As a preferred solution: The outer surface of the first metal shell is provided with a first rotation limiting convex part. The first rotation limiting convex part and the second stop convex part are arranged at intervals to form a first rotation limiting notch. The first locking shell is provided with a first rotation convex part that can be rotatably inserted into the first rotation limiting notch.

[0016] As a preferred solution: The connector socket further includes

[0017] a first plastic body, which is installed in the first metal shell and forms a first insertion opening facing forward;

[0018] a first terminal group, which is embedded in the first plastic body. The outer surface of the first plastic body is coated with a metal support shell. After the first plastic body is installed in the first metal shell, the outer surface of the metal support shell abuts against the inner surface of the first metal shell.

[0019] As a preferred solution: The first metal shell is provided with a first glue injection through hole, and the metal support shell is provided with a first glue injection notch. After the first plastic body is installed in the first metal shell, the first glue injection notch is aligned with the first glue injection through hole.

[0020] As a preferred solution: A first wire harness socket penetrates through the rear end of the first metal shell. A first waterproof sleeve is installed in the first wire harness socket. The first waterproof sleeve is provided with an opening for the wire harness to be inserted and connected to the first terminal group;

[0021] By moving the first waterproof sleeve forward, the first waterproof sleeve can be deformed to abut against the surface of the wire harness.

[0022] As a preferred solution: The connector socket further includes

[0023] a wire harness clamping member, which is provided with a plurality of arm bodies for clamping the wire harness;

[0024] a first locking shell, which is snap-fitted and installed at the rear end of the first metal shell. The first locking shell is in a hollow ring structure for the wire harness clamping member to be installed;

[0025] The rear end of the arm body is provided with a first inclined surface, and the inner side surface of the first locking shell is provided with a second inclined surface adapted to the first inclined surface; when the first locking shell is buckled and installed on the first metal shell, the second inclined surface abuts against the first inclined surface and acts on a plurality of arm bodies to displace towards the center direction to clamp the wire harness; at the same time, the wire harness clamping member acts on the first waterproof sleeve to move forward. Brief Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a three-dimensional structural schematic diagram of a connector socket of a deep-sea waterproof signal connector provided by an embodiment of the present application;

[0028] Figure 2 is Figure 1 an exploded view of the connector socket of the deep-sea waterproof signal connector shown;

[0029] Figure 3 is Figure 1 a cross-sectional view of the connector socket of the deep-sea waterproof signal connector shown;

[0030] Figure 4 is Figure 3 a partial enlarged view at A in;

[0031] Figure 5 is Figure 3 a partial enlarged view at B in;

[0032] Figure 6 is Figure 1 a structural schematic diagram of the connector socket of the deep-sea waterproof signal connector shown being plugged into the connector plug;

[0033] Figure 7 is Figure 6 a partial structural schematic diagram of the second metal shell of the connector plug of the deep-sea waterproof signal connector shown.

[0034] Among them, the reference numerals in the drawings:

[0035] 10. Connector socket; 11. First metal shell; 111. First sealing ring; 112. Second sealing ring; 113. First stop protrusion; 114. Second stop protrusion; 115. First installation notch; 116. Second installation notch; 117. First limiting protrusion; 118. First rotation limiting protrusion; 110. First rotation limiting notch; 1101. First glue injection through hole; 1102. First wire harness socket; 1103. First waterproof sleeve; 12. First lock housing; 121. First lock convex point; 122. First rotation convex part; 13. First plastic main body; 131. Metal support shell; 132. First glue injection notch; 14. First terminal group; 15. Wire harness clamping member; 151. Arm body; 152. First inclined surface; 16. First locking housing; 161. Second inclined surface;

[0036] 20. Connector plug; 21. Second metal shell; 211. First lock groove; 2111. Oblique groove part; 2112. Horizontal groove part; 2113. Buckling notch; 212. First limiting through groove; 213. First notch; 214. Second notch. Detailed implementation manners

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0039] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more, unless otherwise specifically defined.

[0041] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0042] Please refer to Figures 1 to 7 , and now the deep-sea waterproof signal connector provided by the embodiments of this application will be described. The deep-sea waterproof signal connector includes a connector socket 10 and a connector plug 20.

[0043] The connector plug 20 can be inserted into and pulled out from the connector socket 10 to achieve signal conduction between two devices; the connector socket 10 includes a first metal shell 11 and a first locking shell 12 rotatably mounted on the first metal shell 11; at least a first sealing ring 111 and a second sealing ring 112 are mounted on the outer surface of the first metal shell 11, the first sealing ring 111 and the second sealing ring 112 are arranged at a front-back interval, and the diameter of the second sealing ring 112 is larger than that of the first sealing ring 111; the connector plug 20 includes a second metal shell 21, and a first locking groove 211 is provided on the outer surface of the second metal shell 21; a first locking bump 121 capable of being snapped into the first locking groove 211 is provided on the inner surface of the first locking shell 12; when the connector plug 20 is inserted into the connector socket 10, the inner side surface of the second metal shell 21 abuts against the first sealing ring 111 and the second sealing ring 112, and the first locking bump 121 is snapped into the first locking groove 211.

[0044] Specifically, by rotatably installing the first locking shell 12 on the outer surface of the first metal shell 11 of the connector socket 10, and arranging the first locking bumps 121 on the inner surface of the first locking shell 12; after the connector plug 20 is inserted into the connector socket 10, the first locking shell 12 can be rotated to snap the first locking bumps 121 into the first locking grooves 211 to complete the locking of the connector plug 20 and the connector socket 10; with such a structure, there is no need to use a thread loosening prevention mechanism for locking. When used in a deep-sea environment, it will not be affected by rust problems and affect the subsequent detachment of the connector plug 20 and the connector socket 10, thereby improving the service life and reliability of the locking mechanism between the connector plug 20 and the connector socket 10; secondly, by at least arranging the first sealing ring 111 and the second sealing ring 112, and the diameter of the second sealing ring 112 is larger than that of the first sealing ring 111, a stepped waterproof sealing effect is achieved, so as to ensure that after the connector plug 20 is inserted into the connector socket 10, the gap between the first metal shell 11 and the second metal shell 21 can be effectively sealed, and no liquid will seep into its interior to corrode the terminals in a deep-sea environment, further improving the service reliability and service life of the connector socket 10 and the connector socket 10.

[0045] More specifically, the first locking groove 211 includes an inclined groove body portion 2111, a transverse groove body portion 2112 and a buckling notch 2113. One end of the inclined groove body portion 2111 penetrates through one end of the second metal shell 21, one end of the transverse groove body portion 2112 is conductively connected to the other end of the inclined groove body portion 2111, and the buckling notch 2113 is conductively connected to the other end of the transverse groove body portion 2112; after the connector plug 20 is inserted into the connector socket 10, the first locking bump 121 enters the inclined groove body portion 2111, and then the first locking shell 12 is rotated, and the first locking bump 121 can enter the buckling notch 2113 through the transverse groove body portion 2112 to complete the locking connection between the connector plug 20 and the connector socket 10.

[0046] In some embodiments of the present application, the outer surface of the first metal shell 11 is provided with a first stop convex portion 113 and a second stop convex portion 114. The first stop convex portion 113 and the second stop convex portion 114 gradually become larger from front to back to form a stepped stop structure; a first installation notch 115 for installing the first sealing ring 111 is provided on the front side of the first stop convex portion 113, and a second installation notch 116 for installing the second sealing ring 112 is provided on the front side of the second stop convex portion 114. The second metal shell 21 is provided with a first notch 213 that can abut against the first sealing ring 111 and a second notch 214 that can abut against the second sealing ring 112. After the connector plug 20 is inserted into the connector socket 10, the first notch 213 abuts against the first sealing ring 111, and the second notch 214 abuts against the second sealing ring 112, thereby realizing the sealing of the gap between the connector plug 20 and the connector socket 10.

[0047] Specifically, a first limiting convex portion 117 is provided on the outer surface of the first metal shell 11, and the first limiting convex portion 117 is located on the front side of the first sealing ring 111; a first limiting through groove 212 is provided on the inner side surface of the second metal shell 21, and the first limiting convex portion 117 can be inserted into the first limiting through groove 212. With such a structure, the plugging and unplugging reliability of the connector plug 20 and the connector socket 10 can be improved, and the situation of incorrect insertion is not likely to occur.

[0048] More specifically, a first rotation limiting convex portion 118 is provided on the outer surface of the first metal shell 11, and the first rotation limiting convex portion 118 and the second stop convex portion 114 are arranged at intervals to form a first rotation limiting notch 110; the first locking shell 12 is provided with a first rotation convex portion 122 that can be rotatably inserted into the first rotation limiting notch 110. By providing the first rotation limiting notch, the position of the first locking shell 12 in the front-rear direction relative to the first metal shell 11 can be restricted, so that the first locking shell 12 can only rotate relative to the first metal shell 11 and will not move in the front-rear direction, thereby ensuring that the first locking convex point 121 of the first locking shell 12 can be normally buckled into the first locking groove 211.

[0049] In some other embodiments of the present application, the connector socket 10 further includes a first plastic main body 13 and a first terminal group 14; the first plastic main body 13 is installed inside the first metal shell 11 and forms a first insertion opening facing forward; the first terminal group 14 is embedded in the first plastic main body 13, and the outer surface of the first plastic main body 13 is coated with a metal support shell 131. After the first plastic main body 13 is installed in the first metal shell 11, the outer surface of the metal support shell 131 abuts against the inner surface of the first metal shell 11.

[0050] It can be understood that the connector plug 20 is also provided with a terminal group and a plastic main body, and the terminal group of the connector socket 10 can be in contact conduction connection with the terminal group of the connector plug 20.

[0051] It should be noted here that the first terminal group 14 has a plurality of terminals, and each terminal has a plugging portion, an embedding portion, and a connecting portion. The plugging portion is used to contact the plugging portion of another connector, the embedding portion is used to be embedded in the plastic, and the connecting portion is used to connect the wire harness; this is a commonly used technical means for those skilled in the art and will not be elaborated here one by one.

[0052] Preferably, the first metal shell 11 is provided with a first glue injection through hole 1101, and the metal support shell 131 is provided with a first glue injection notch 132; when the first plastic body 13 is installed in the first metal shell 11, the first glue injection notch 132 is directly opposite to the first glue injection through hole 1101. After the first plastic body 13 is installed in the first metal shell 11, by pouring the slurry, the first glue injection through hole 1101 and the first glue injection notch 132 are filled. After the slurry is cured, the first plastic body 13 can be fixed inside the first metal shell 11.

[0053] In some other embodiments of the present application, a first wire harness socket 1102 penetrates through the rear end of the first metal shell 11. A first waterproof sleeve 1103 is installed in the first wire harness socket 1102. The first waterproof sleeve 1103 is provided with an opening for the wire harness to be inserted and connected to the first terminal group 14; when the first waterproof sleeve 1103 moves forward, the first waterproof sleeve 1103 can be deformed to abut against the surface of the wire harness.

[0054] The rear surface of the metal support shell 131 is provided with an inclined surface, and the front surface of the first waterproof sleeve 1103 is also provided with an inclined surface. When the first waterproof sleeve 1103 moves forward, the inclined surface of the first waterproof sleeve 1103 can abut against the inclined surface of the metal support shell 131, so as to cause the first waterproof sleeve 1103 to deform, so that the first waterproof sleeve 1103 can abut against the outer surface of the wire harness, sealing the gap between the first wire harness socket 1102 and the wire harness and improving the waterproof effect.

[0055] In some other embodiments of the present application, the connector socket 10 further includes a wire harness clamping member 15 and a first locking shell 16; the wire harness clamping member 15 is provided with a plurality of arm bodies 151 for clamping the wire harness. The first locking shell 16 is snap-fitted and installed at the rear end of the first metal shell 11. The first locking shell 16 has a hollow annular structure for the wire harness clamping member 15 to be installed; the rear end of the arm body 151 is provided with a first inclined surface 152, and the inner side surface of the first locking shell 16 is provided with a second inclined surface 161 adapted to the first inclined surface 152; when the first locking shell 16 is snap-fitted and installed on the first metal shell 11, the second inclined surface 161 abuts against the first inclined surface 152 and causes the plurality of arm bodies 151 to displace towards the center direction to clamp the wire harness; at the same time, the wire harness clamping member 15 causes the first waterproof sleeve 1103 to move forward.

[0056] It should be noted here that the front side of the first locking shell 16 is provided with a snap-fitting convex portion, and the first metal shell 11 is provided with a snap-fitting notch. By snapping the snap-fitting convex portion into the snap-fitting notch, the first locking shell 16 can be snap-fitted and installed at the rear end of the first metal shell 11.

[0057] It can be understood that the first locking shell 16 and the wire harness clamping member 15 are also applicable to the connector plug 20 for supporting and fixing the wire harness.

[0058] The above are only preferred embodiments of the present invention, and only specifically describe the technical principles of the present invention. These descriptions are only for the purpose of explaining the principles of the present invention, and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanation here, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention, and other specific implementation methods of the present invention that can be associated with by technicians in this field without creative labor, should be included in the scope of protection of the present invention.

Claims

1. A deep-sea waterproof signal connector, comprising a connector socket (10) and a connector plug (20) which are pluggable and connected to each other; characterized in that: The connector socket (10) comprises a first metal shell (11) and a first locking shell (12) rotatably mounted on the first metal shell (11); at least a first sealing ring (111) and a second sealing ring (112) are mounted on the outer surface of the first metal shell (11); the first sealing ring (111) and the second sealing ring (112) are spaced apart from each other in front and back, and the diameter of the second sealing ring (112) is greater than the diameter of the first sealing ring (111); The connector plug (20) comprises a second metal shell (21), the outer surface of the second metal shell (21) being provided with a first locking groove (211); the inner surface of the first locking shell (12) being provided with a first locking protrusion (121) capable of being locked into the first locking groove (211); When the connector plug (20) is plugged into the connector socket (10), the inner side surface of the second metal shell (21) abuts against the first sealing ring (111) and the second sealing ring (112), and the first locking protrusion (121) is locked into the first locking groove (211).

2. The deep sea waterproof signal connector according to claim 1, characterized in that: A first stop convex portion (113) and a second stop convex portion (114) are provided on the outer surface of the first metal shell, and the first stop convex portion (113) and the second stop convex portion (114) gradually increase in size from front to back to form a stepped stop structure; A first installation notch (115) for installing the first sealing ring (111) is provided on the front side of the first stop convex portion (113), and a second installation notch (116) for installing the second sealing ring (112) is provided on the front side of the second stop convex portion (114).

3. The deep sea waterproof signal connector according to claim 1 or 2, characterized in that: A first position-limiting protrusion (117) is provided on the outer surface of the first metal shell (11), and the first position-limiting protrusion (117) is located in front of the first sealing ring (111); A first limiting through groove (212) is provided on the inner side surface of the second metal shell (21), and the first limiting protrusion (117) can be inserted into the first limiting through groove (212).

4. The deep sea waterproof signal connector according to claim 2, characterized in that: The first metal shell (11) has a first rotation limiting protrusion (118) on its outer surface, the first rotation limiting protrusion (118) and the second stop protrusion (114) are spaced apart to form a first rotation limiting notch (110), and the first locking shell (12) has a first rotation protrusion (122) that can be rotatably inserted into the first rotation limiting notch (110).

5. The deep sea waterproof signal connector according to claim 1, characterized in that: The connector socket (10) further comprises A first plastic body (13) is installed in the first metal shell (11) and forms a first plug interface with an opening facing forward; A first terminal group (14) embedded in the first plastic body (13); The outer surface of the first plastic body (13) is covered with a metal support shell (131); when the first plastic body (13) is inserted into the first metal shell (11), the outer surface of the metal support shell (131) abuts against the inner surface of the first metal shell (11).

6. The deep sea waterproof signal connector according to claim 5, characterized in that: The first metal shell (11) is provided with a first glue injection through hole (1101), and the metal support shell (131) is provided with a first glue injection notch (132); when the first plastic body (13) is installed in the first metal shell (11), the first glue injection notch (132) is directly opposite to the first glue injection through hole (1101).

7. The deep sea waterproof signal connector according to claim 1, characterized in that: A first wiring harness socket (1102) is passed through the rear end of the first metal shell (11), a first waterproof sleeve (1103) is installed in the first wiring harness socket (1102), and the first waterproof sleeve (1103) is provided with an opening for inserting the wiring harness and connecting it to the first terminal group; The first waterproof cover (1103) is moved forward, so that the first waterproof cover (1103) can be deformed to abut against the surface of the wiring harness.

8. The deep sea waterproof signal connector according to claim 1, characterized in that: The connector socket (10) further comprises A wire harness clamp (15) provided with a plurality of arms (151) for clamping the wire harness; A first locking shell (16) is buckled and mounted on the rear end of the first metal shell (11); the first locking shell (16) is a hollow ring-shaped structure for the wiring harness clamp (15) to be installed therein; A first inclined surface (152) is provided at the rear end of the arm body (151), and a second inclined surface (161) adapted to the first inclined surface (152) is provided on the inner side surface of the first locking shell (16); when the first locking shell (16) is buckled and installed on the first metal shell (11), the second inclined surface (161) abuts against the first inclined surface (152) and causes the multiple arm bodies (151) to move toward the center direction to clamp the wiring harness; at the same time, the wiring harness clamping piece causes the first waterproof cover (1103) to move forward.

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