A metal connector

Abstract

This application discloses a metal connector, comprising: a plug assembly, a socket assembly, and a locking assembly; the socket assembly includes a socket housing, a female ferrule, and a female connector, the female ferrule being installed within the socket housing, and a first insertion cavity for the female connector to be inserted into is formed within the female ferrule. A first annular limiting portion protrudes from the cavity wall of the first insertion cavity. The female connector includes a first body, a first tapered portion, and a first annular portion, the first tapered portion and the first annular portion being spaced apart and protruding from the first body. When the female connector is inserted into the first insertion cavity, the first tapered portion can be compressed and contracted through the first limiting portion by the first limiting portion, and the large end face of the first tapered portion can abut against the two end faces of the first limiting portion of the first annular portion to form a limiting fit. This application ensures the stability of the connector during use and prevents loosening.

Description

Technical Field

[0001] This application relates to the technical field of connectors, and more particularly to a metal connector. Background Technology

[0002] In the field of signal transmission in electronic equipment and various electrical systems, metal connectors play a crucial role as key components for circuit connection and signal transmission. Signal connectors, in particular, directly affect the signal transmission quality and reliability of the entire system due to their performance stability. Currently, common metal signal connectors typically consist of a ferrule and mating terminals mounted on it. In practical applications, the mating terminals need to be precisely and securely mounted on the ferrule to ensure good electrical connection and mechanical stability.

[0003] However, in existing metal connector technology, the mating terminals are prone to loosening after being mounted on the ferrule during long-term use. This problem stems from various factors, such as design flaws in the assembly structure between the mating terminals and the ferrule, resulting in an insufficiently tight connection; or, during use, vibrations from equipment operation, thermal expansion and contraction of materials due to temperature changes, and frequent mating operations can all gradually weaken the bonding force between the mating terminals and the ferrule. Once the mating terminals loosen, it not only leads to signal transmission interruption and signal quality degradation, affecting the normal operation of the equipment, but in severe cases, it can even cause safety accidents, causing significant inconvenience and economic losses to users. Utility Model Content

[0004] The purpose of this application is to provide a metal connector that can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] On one hand, a metal connector is provided, comprising: a plug assembly, a socket assembly, and a locking assembly, wherein the locking assembly is disposed on the plug assembly, the plug assembly is capable of being inserted into and removed from the socket assembly in a insertion / removal direction, and is locked by the locking assembly;

[0007] The socket assembly includes a socket housing, a female plug, and a female connector. The female plug is installed inside the socket housing, and a first insertion cavity for the female connector to be inserted into is formed inside the female plug. The cavity wall of the first insertion cavity is provided with a first limiting part in an annular shape. The female connector includes a first body, a first conical part, and a first annular part. The first conical part and the first annular part are spaced apart and protrude from the first body. When the female connector is inserted into the first insertion cavity, the first conical part can be squeezed and contracted by the first limiting part to pass through the first limiting part. After the first conical part passes through the first limiting part, the large end face of the first conical part can abut against the two end faces of the first limiting part of the first annular part to form a limiting fit.

[0008] Furthermore, the female connector also includes a first plug portion connected to the small end face of the first tapered portion, and a connection space is formed within the first plug portion.

[0009] Furthermore, the plug assembly includes a male connector, which includes a second plug portion that plugs into the connection space.

[0010] Furthermore, the plug assembly also includes a plug housing and a male plug, the male plug being installed inside the plug housing, the male plug having a second insertion cavity formed therein for the male connector to be inserted into, and the male plug and the female plug engaging to make the male connector and the female connector electrically connected.

[0011] Furthermore, the cavity wall of the second insertion cavity is provided with a second limiting part in the shape of an annulus. The male connector includes a second body, a second conical part, and a second annular part. The second conical part and the second annular part are spaced apart and protrude on the second body. When the male connector is inserted into the second insertion cavity, the second conical part can be squeezed and contracted by the second limiting part to pass through the second limiting part. After the second conical part passes through the second limiting part, the large end face of the second conical part can abut against the two end faces of the second limiting part of the second annular part to form a limiting fit. The second insertion part is connected to the small end face of the second conical part.

[0012] Furthermore, the first limiting portion has a first inclined surface on the inner side of the end face away from the male connector, which is guided and engaged with the first tapered portion; and / or the second limiting portion has a second inclined surface on the inner side of the end face away from the female connector, which is guided and engaged with the second tapered portion.

[0013] Furthermore, the male connector is locked to the plug housing by a first fastener, and a first sealing ring is provided between the first fastener and the plug housing; and / or the female connector is locked to the socket housing by a second fastener, and a second sealing ring is provided between the second fastener and the socket housing.

[0014] Furthermore, the plug assembly also includes a gland member, which is mounted on the side of the plug housing opposite to the socket housing.

[0015] Furthermore, the female plug core is provided with a plurality of first plug-in cavities, and each first plug-in cavity is correspondingly plugged into the female plug-in component; the male plug core is provided with a plurality of second plug-in cavities, each second plug-in cavity corresponding to a first plug-in cavity, and each second plug-in cavity is correspondingly plugged into the male plug-in component.

[0016] Furthermore, a waterproof pad is provided on the side of the socket housing facing away from the plug assembly.

[0017] The beneficial effects of this application are as follows: Through the compression and contraction cooperation of the first tapered portion and the first limiting portion, along with subsequent limiting abutment, the connection stability between the female connector and the female ferrule is greatly enhanced. This effectively solves the problem of easy loosening of the connector terminals during long-term use in the prior art, significantly improving the reliability and service life of the metal connector, reducing signal interruption and quality degradation caused by loose connections, and ensuring the stable operation of electronic equipment and electrical systems. Furthermore, this structure is simple and easy to implement, requiring no complex manufacturing processes or additional components, reducing production costs, and facilitating installation and maintenance, thus improving production efficiency. Simultaneously, this robust connection method can adapt to different working environments, such as those with vibration or temperature changes, while maintaining good connection performance, enhancing the versatility and adaptability of the metal connector, and enabling its widespread application in various scenarios requiring reliable signal connections. Attached Figure Description

[0018] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the metal connector described in an embodiment of this application;

[0020] Figure 2 This is an exploded view of the metal connector described in the embodiments of this application;

[0021] Figure 3 This is a schematic diagram of the socket assembly described in an embodiment of this application;

[0022] Figure 4 This is a cross-sectional view of the socket assembly described in an embodiment of this application;

[0023] Figure 5 This is a schematic diagram of the plug assembly described in an embodiment of this application;

[0024] Figure 6 This is a cross-sectional view of the plug assembly described in an embodiment of this application;

[0025] Figure 7 This is a schematic diagram of the male connector described in the embodiments of this application;

[0026] Figure 8 This is a schematic diagram of the female connector described in the embodiments of this application.

[0027] In the diagram: 1. Plug assembly; 101. Plug housing; 102. Male pin; 103. Male connector; 104. Gland connector; 1021. Second insertion cavity; 1022. Second limiting part; 1031. Second body; 1032. Second conical part; 1033. Second annular part; 1034. Second insertion part; 2. Socket assembly; 201. Socket housing; 202. Female pin; 203. Female connector; 204. Waterproof gasket; 2021. First insertion cavity; 2022. First limiting part; 2031. First body; 2032. First conical part; 2033. First annular part; 2034. First insertion part; 2035. Connection space; 3. Locking assembly; 4. Second fastener; 5. First fastener. Detailed Implementation

[0028] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] like Figures 1-8 As shown, this embodiment provides a metal connector, including: a plug assembly 1, a socket assembly 2, and a locking assembly 3. The locking assembly 3 is disposed on the plug assembly 1, and the plug assembly 1 can be inserted and removed into the socket assembly 2 in the insertion and removal direction, and is locked by the locking assembly 3. The socket assembly 2 includes a socket housing 201, a female ferrule 202, and a female connector 203. The female ferrule 202 is installed in the socket housing 201, and a first insertion cavity 2021 is formed in the female ferrule 202 for the female connector 203 to be inserted into. The cavity wall of the first insertion cavity 2021 is provided with a first limiting part 2022 in an annular shape. The female connector 2022... 03 includes a first main body 2031, a first conical portion 2032, and a first annular portion 2033. The first conical portion 2032 and the first annular portion 2033 are spaced apart and protrude from the first main body 2031. When the female connector 203 is inserted into the first insertion cavity 2021, the first conical portion 2032 can be squeezed and contracted by the first limiting portion 2022 and pass through the first limiting portion 2022. After the first conical portion 2032 passes through the first limiting portion 2022, the large end face of the first conical portion 2032 can abut against the two end faces of the first annular portion 2033 respectively to form a limiting fit.

[0032] Based on the above solution, the anti-loosening function is achieved through the synergistic effect of the first conical portion 2032 and the annular first limiting portion 2022. When the first conical portion 2032 of the female connector 203 is inserted into the first insertion cavity 2021, it is squeezed by the annular first limiting portion 2022, undergoes elastic contraction, and passes through the first limiting portion 2022. After passing through, the first conical portion 2032 expands due to elastic recovery, and its large end face and the first annular portion 2033 together clamp the two end faces of the first limiting portion 2022, forming a bidirectional mechanical lock. This structure uses elastic deformation to ensure a tight fit and disperses external stress through the 360° annular contact surface. Combined with the dual limiting mechanism (the first conical portion 2032 prevents outward dislodgement, and the first annular portion 2033 restricts inward displacement), it significantly improves vibration resistance and long-term stability, fundamentally solving the problem of terminal loosening caused by vibration, thermal expansion and contraction, or frequent insertion and removal in traditional connectors.

[0033] This solution comprehensively enhances reliability, durability, and applicability: its annular first limiting part 2022, in conjunction with the elastic first conical part 2032, effectively absorbs vibration energy, maintaining stable connection under harsh conditions such as automotive or industrial equipment; when using the same metal material, it maintains tight contact during thermal expansion and contraction, preventing gaps; the self-locking forming mechanism during insertion simplifies the assembly process, requiring no additional operations; the pure metal structure has no vulnerable parts, making it suitable for high-frequency insertion and removal scenarios, significantly reducing maintenance costs; the annular contact surface design enhances conductivity, reduces contact resistance and the risk of overheating, and is compatible with high-power signal transmission. Compared to threaded, snap-fit, or push-pull connectors, this solution offers significant advantages in vibration resistance, lifespan, and cost control, making it particularly suitable for fields with high reliability requirements such as automotive electronics and industrial automation.

[0034] Furthermore, the female connector 203 also includes a first insertion portion 2034 connected to the small end face of the first tapered portion 2032, and a connection space 2035 is formed within the first insertion portion 2034. The plug assembly 1 includes a male connector 103, and the male connector 103 includes a second insertion portion 1034 that inserts into the connection space 2035. On the female connector 203, the first insertion portion 2034 is connected to the small end face of the first tapered portion 2032, and a connection space 2035 is formed within the first insertion portion 2034. The male connector 103 in the plug assembly 1 is provided with a second insertion portion 1034. When the plug assembly 1 is plugged into the socket assembly 2, the second insertion portion 1034 of the male connector 103 will be precisely inserted into the connection space 2035 formed by the first insertion portion 2034 of the female connector 203. This plugging method creates a tight and precise connection structure between the male plug 103 and the female plug 203. Through the cooperation of the second plug part 1034 and the connection space 2035, an effective transmission path for electrical signals is achieved. At the same time, the connection stability between the plug assembly 1 and the socket assembly 2 is further enhanced in terms of mechanical structure.

[0035] In this design, from an electrical connection perspective, the second insertion part 1034 inserts into the connection space 2035 to form a clear signal transmission channel, ensuring stable and efficient signal transmission, reducing interference and loss during signal transmission, improving signal transmission quality and accuracy, and meeting the high-quality signal transmission requirements of various electronic devices. Mechanically, this insertion further increases the connection strength between the plug assembly 1 and the socket assembly 2, complementing the limiting cooperation between the first tapered part 2032 and the first limiting part 2022, forming a multi-layered, stable connection structure. This effectively prevents the connector from loosening or falling off due to external forces during use, greatly improving the connector's reliability and durability. Furthermore, this insertion structure is simple in design, easy to operate, facilitates manufacturing and assembly, reduces production costs, and also facilitates user insertion and removal operations, improving ease of use.

[0036] Furthermore, the plug assembly 1 also includes a plug housing 101 and a male connector 102. The male connector 102 is installed inside the plug housing 101, and a second insertion cavity 1021 is formed within the male connector 102 for the male connector 103 to be inserted into. The male connector 102 and the female connector 202 mate and connect to each other, enabling the male connector 103 and the female connector 203 to be electrically connected. The second insertion cavity 1021 is formed inside the male connector 102, allowing the male connector 103 to be inserted into this cavity and positioned within the plug assembly 1. When the plug assembly 1 is plugged into the socket assembly 2, the male connector 102 and the female connector 202 precisely mate and connect. The second insertion cavity 1021 on the male plug 102 provides a stable mounting base for the male connector 103, while the first insertion cavity 2021 and related structures in the female plug 202 provide mounting space for the female connector 203. After the two are connected, the male connector 103 and the female connector 203 achieve close contact under the guidance and positioning of their respective plugs, thereby establishing a reliable electrical connection path and ensuring that electrical signals can be stably transmitted between the plug assembly 1 and the socket assembly 2.

[0037] Meanwhile, the cavity wall of the second insertion cavity 1021 is provided with a second limiting part 1022 in the shape of an annulus. The male insertion member 103 includes a second body 1031, a second conical part 1032 and a second annular part 1033. The second conical part 1032 and the second annular part 1033 are provided on the second body 1031 at intervals. When the male insertion member 103 is inserted into the second insertion cavity 1021, the second conical part 1032 can be squeezed and contracted by the second limiting part 1022 and pass through the second limiting part 1022. After the second conical part 1032 passes through the second limiting part 1022, the large end face of the second conical part 1032 can abut against the two end faces of the second limiting part 1022 with the second annular part 1033 to form a limiting fit. The second insertion part 1034 is connected to the small end face of the second conical part 1032. When the male connector 103 is inserted into the second insertion cavity 1021, due to the conical structure of the second conical portion 1032, under the compression of the second limiting portion 1022, the second conical portion 1032 will shrink and deform, thus smoothly passing through the second limiting portion 1022. Once the second conical portion 1032 has passed through the second limiting portion 1022, it will return to its original shape due to its own elasticity. At this time, the large end face of the second conical portion 1032 and the second annular portion 1033 respectively abut against the two end faces of the second limiting portion 1022, forming a stable limiting fit. This limiting fit ensures the stable installation of the male connector 103 in the second insertion cavity 1021, preventing it from coming out of the second insertion cavity 1021 during use, thereby ensuring a reliable mechanical and electrical connection between the male connector 103 and the male connector core 102.

[0038] Furthermore, the first limiting portion 2022 has a first inclined surface on the inner side of its end face away from the male connector 103, which guides and engages with the first tapered portion 2032; and / or the second limiting portion 1022 has a second inclined surface on the inner side of its end face away from the female connector 203, which guides and engages with the second tapered portion 1032. When the female connector 203 is inserted into the first insertion cavity 2021, the first tapered portion 2032 contacts the first inclined surface. Due to the guiding effect of the first inclined surface, the first tapered portion 2032 can be squeezed and contracted more smoothly along the inclined surface direction, thereby passing smoothly through the first limiting portion 2022. Similarly, when the male connector 103 is inserted into the second insertion cavity 1021, the second tapered portion 1032 contacts the second inclined surface. The second inclined surface provides guidance for the second tapered portion 1032, allowing it to be squeezed and contracted smoothly and pass through the second limiting portion 1022. This guiding design makes the insertion process smoother, reducing jamming and resistance during insertion.

[0039] In some embodiments, the male connector 102 is locked to the plug housing 101 by a first fastener 5, and a first sealing ring is provided between the first fastener 5 and the plug housing 101; and / or the female connector 202 is locked to the socket housing 201 by a second fastener 4, and a second sealing ring is provided between the second fastener 4 and the socket housing 201. When the first fastener 5 is tightened, it compresses the first sealing ring, causing the first sealing ring to elastically deform, thereby filling the gap between the first fastener 5 and the plug housing 101, forming a sealing structure. Similarly, for the connection between the female connector 202 and the socket housing 201, the second fastener 4 is used to lock the female connector 202 to the socket housing 201, and a second sealing ring is provided between the second fastener 4 and the socket housing 201. When the second fastener 4 is tightened, it compresses the second sealing ring, causing it to fill the gap between the two, thus achieving a seal.

[0040] Optionally, the plug assembly 1 further includes a gland 104, which is mounted on the side of the plug housing 101 opposite to the socket housing 201. The gland 104 typically has a specific structure and function, generally including a locking nut, a seal, and components for securing the cable. When a cable needs to be connected to the plug assembly 1, the cable passes through the gland 104 and enters the plug housing 101 to connect with components such as the male connector 103. The gland 104 is tightly fitted to the cable through its internal seal, and the locking nut and other components firmly secure the gland 104 to the plug housing 101, thereby achieving the functions of securing and sealing the cable.

[0041] Generally, multiple first insertion cavities 2021 are provided within the female ferrule 202. Each first insertion cavity 2021 has a specific structure and dimensions to accommodate the corresponding female connector 203. The female connector 203 is precisely inserted into the corresponding first insertion cavity 2021 according to design requirements. The first limiting part 2022 of the cavity wall of the first insertion cavity 2021 cooperates with the first conical part 2032 and the first annular part 2033 of the female connector 203 to achieve stable installation and positioning of the female connector 203 within the female ferrule 202. Similarly, multiple second insertion cavities 1021 are provided within the male ferrule 102, each corresponding to one of the first insertion cavities 2021. Each second insertion cavity 1021 also provides installation space for the male connector 103. The male connector 103 is inserted into the corresponding second insertion cavity 1021. The second limiting part 1022 on the cavity wall of the second insertion cavity 1021 cooperates with the second conical part 1032 and the second annular part 1033 of the male connector 103 to ensure stable installation of the male connector 103 within the male plug core 102. When the plug assembly 1 and the socket assembly 2 are plugged in, the male plug core 102 mates with the female plug core 202, and the male connector 103 contacts the female connector 203 in a one-to-one correspondence, establishing multiple electrical connection channels to achieve the transmission of multiple signals or power.

[0042] It is worth mentioning that a waterproof pad 204 is provided on the side of the socket housing 201 opposite to the plug assembly 1. The waterproof pad 204 is typically made of a material with good elasticity and waterproof performance, such as rubber or silicone. When the socket housing 201 is connected and fixed to the mounting surface (e.g., the device housing), the waterproof pad 204 is pressed between the socket housing 201 and the mounting surface. Due to the elastic properties of the waterproof pad 204, it deforms according to the shape of the gap between the mounting surface and the socket housing 201, tightly filling these gaps, thereby preventing external moisture, liquids, etc., from entering the interior of the socket housing 201 through these gaps.

[0043] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0044] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0046] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A metal connector, characterized in that, include: The plug assembly (1), the socket assembly (2), and the locking assembly (3) are provided on the plug assembly (1). The plug assembly (1) can be inserted into and removed from the socket assembly (2) in the insertion and removal direction and is locked by the locking assembly (3). The socket assembly (2) includes a socket housing (201), a female socket core (202), and a female connector (203). The female socket core (202) is installed inside the socket housing (201). A first insertion cavity (2021) for the female connector (203) to be inserted into is formed inside the female socket core (202). The cavity wall of the first insertion cavity (2021) is provided with a first limiting part (2022) in an annular shape. The female connector (203) includes a first body (2031), a first conical part (2032), and a first annular part (2033). The first conical part (2032) The first conical part (2032) and the first annular part (2033) are spaced apart and protrude on the first body (2031). When the female connector (203) is inserted into the first insertion cavity (2021), the first conical part (2032) can be squeezed and contracted by the first limiting part (2022) and pass through the first limiting part (2022). After the first conical part (2032) passes through the first limiting part (2022), the large end face of the first conical part (2032) can abut against the two end faces of the first limiting part (2022) to form a limiting fit with the first annular part (2033).

2. The metal connector of claim 1, wherein The female connector (203) further includes a first plug portion (2034) connected to the small end face of the first tapered portion (2032), and a connection space (2035) is formed in the first plug portion (2034).

3. The metal connector of claim 2, wherein The plug assembly (1) includes a male connector (103), which includes a second connector (1034) that is inserted into the connection space (2035).

4. The metal connector of claim 3, wherein The plug assembly (1) further includes a plug housing (101) and a male plug (102). The male plug (102) is installed inside the plug housing (101). A second insertion cavity (1021) is formed inside the male plug (102) for the male connector (103) to be inserted into. The male plug (102) and the female plug (202) are mated together so that the male connector (103) and the female connector (203) are electrically connected.

5. The metal connector of claim 4, wherein, The cavity wall of the second insertion cavity (1021) is provided with a second limiting part (1022) in the shape of an annulus. The male connector (103) includes a second body (1031), a second conical part (1032), and a second annular part (1033). The second conical part (1032) and the second annular part (1033) are spaced apart and protrude from the second body (1031). When the male connector (103) is inserted into the second insertion cavity (1021), the second conical part (1022) 1032) can be squeezed and contracted by the second limiting part (1022) and pass through the second limiting part (1022). After the second conical part (1032) passes through the second limiting part (1022), the large end face of the second conical part (1032) can abut against the two end faces of the second limiting part (1022) respectively to form a limiting fit with the second annular part (1033). The second insertion part (1034) is connected to the small end face of the second conical part (1032).

6. The metal connector according to claim 5, characterized in that, The first limiting part (2022) has a first inclined surface on the inner side of the end face away from the male connector (103) that guides and cooperates with the first tapered part (2032); and / or the second limiting part (1022) has a second inclined surface on the inner side of the end face away from the female connector (203) that guides and cooperates with the second tapered part (1032).

7. The metal connector of claim 4, wherein The male plug (102) is locked to the plug housing (101) by a first fastener (5), and a first sealing ring is provided between the first fastener (5) and the plug housing (101); and / or the female plug (202) is locked to the socket housing (201) by a second fastener (4), and a second sealing ring is provided between the second fastener (4) and the socket housing (201).

8. The metal connector of claim 4, wherein, The plug assembly (1) further includes a gland (104) mounted on the side of the plug housing (101) opposite to the socket housing (201).

9. The metal connector of claim 4, wherein, The female ferrule (202) is provided with a plurality of first insertion cavities (2021), and each first insertion cavity (2021) is correspondingly inserted with a female connector (203); the male ferrule (102) is provided with a plurality of second insertion cavities (1021), and each second insertion cavity (1021) corresponds to a first insertion cavity (2021), and each second insertion cavity (1021) is correspondingly inserted with a male connector (103).

10. The metal connector according to any one of claims 1 to 7, wherein A waterproof pad (204) is provided on the side of the socket housing (201) away from the plug assembly (1).

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