Socket and connector

Abstract

The socket comprises a shell, a first rubber core, a first shielding cover, a second rubber core and a second shielding cover, a transverse hole and a longitudinal hole which are communicated and vertically distributed are formed in the shell, the first shielding cover is arranged in the transverse hole, the second shielding cover is arranged in the longitudinal hole, and the second rubber core is arranged in the second shielding cover. A first limiting part is arranged on one side, close to the second shielding case, of the first shielding case, the first rubber core is arranged in the first shielding case, and the side edge of the first rubber core abuts against the first limiting part for limiting; a second limiting part is arranged on one side, far away from the first shielding case, of the second shielding case, the second rubber core is arranged in the second shielding case, and the bottom edge of the second rubber core abuts against the second limiting part for limiting. The rubber core is effectively positioned and mounted through the limiting part on the shielding cover, the accurate mounting position of the rubber core is ensured, the rubber core can be prevented from shaking and displacing after being mounted, and the use safety and stability of the socket and the connector are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of charging sockets, in particular to a socket and a connector. BACKGROUND

[0002] With the rapid development of the new energy vehicle market, the demand for high-performance and high-reliability two-core sockets is increasing. As a common type of modern electrical connection equipment, the two-core plastic elbow socket is widely used in various industrial sites due to its simple structure and flexible use, and is increasingly used in vehicles. However, the existing two-core plastic elbow socket cannot effectively install and position the shielding cover when installing the rubber core, resulting in inaccurate installation and easy displacement during use, which may cause use failure. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiments of the present application is to provide a socket and a connector, which can effectively position and install the rubber core through the limiting portion on the shielding cover, ensure the accurate installation position of the rubber core, and prevent the rubber core from shaking and displacing after installation, thereby improving the use safety and stability of the socket and the connector.

[0004] To achieve the above purpose, the present application adopts the following technical scheme:

[0005] On the one hand, a socket is provided, which comprises an outer shell, a first rubber core, a first shielding cover, a second rubber core and a second shielding cover. The outer shell is provided with a transverse hole and a longitudinal hole which are connected and vertically distributed. The first shielding cover is arranged in the transverse hole, and the second shielding cover is arranged in the longitudinal hole. A first limiting portion is arranged on the side of the first shielding cover close to the second shielding cover. The first rubber core is arranged in the first shielding cover, and the side edge thereof abuts against and is limited by the first limiting portion. A second limiting portion is arranged on the side of the second shielding cover away from the first shielding cover. The second rubber core is arranged in the second shielding cover, and the bottom edge thereof abuts against and is limited by the second limiting portion.

[0006] Further, the upper wall of the first shielding cover extends towards the direction of the second shielding cover to form a shielding portion. The shielding portion is arranged above the second rubber core and abuts against the inner wall of the second shielding cover.

[0007] Further, the shielding portion is provided with a third limiting portion which cooperates with the side edge of the first rubber core to limit the position.

[0008] Further, the first limiting portion, the second limiting portion and the third limiting portion are all arc-shaped and curved inward.

[0009] Furthermore, the outer wall surface of the first shielding cover is provided with a first clamping piece, and the first rubber core is provided with a first clamping position that cooperates with and locks with the first clamping piece; and / or the outer wall surface of the second shielding cover is provided with a second clamping piece, and the second rubber core is provided with a second clamping position that cooperates with and locks with the second clamping piece.

[0010] Furthermore, the second shielding cover includes a vertical portion and a horizontal portion connected to the vertical portion. The horizontal portion is opposite to the first shielding cover and has an opening toward the first rubber core. Fourth limiting portions are provided on both sides of the opening for limiting horizontal displacement of the second rubber core.

[0011] Furthermore, an interlocking harness is included, and the interlocking harness is passed through the first rubber core and the second rubber core.

[0012] Furthermore, two spaced-apart bosses are provided on a side of the first rubber core facing away from the second rubber core, and contact elements and anti-touch finger steps are provided in the bosses.

[0013] Furthermore, a limiting groove is provided on the bottom edge of the second rubber core for cooperating with the second limiting portion to limit the position.

[0014] On the other hand, a connector is also provided, comprising a plug and the socket as described above, wherein the plug is plugged into the socket along a plugging and unplugging direction, and a sealing gasket is provided at the connection position between the plug and the socket.

[0015] The beneficial effects of this application are as follows: To achieve precise positioning and fixation of the rubber core, a first stopper is designed on the side of the first shielding cover close to the second shielding cover. This stopper tightly abuts the side of the first rubber core, ensuring its positional accuracy during installation. Similarly, a second stopper is designed on the side of the second shielding cover away from the first shielding cover, abutting the bottom edge of the second rubber core to achieve stable fixation of the second rubber core. This design not only improves installation accuracy but also effectively prevents the rubber core from shaking and displacement after installation, thereby enhancing the stability and safety of the socket and connector.

[0016] The socket also features an elbow design, making it more adaptable to confined or specialized environments, such as automotive interiors. The metal shielding case forms a closed metal barrier, effectively preventing external electromagnetic waves from entering the connector while also preventing internal electromagnetic waves from leaking to the external environment. This improves the connector's electromagnetic compatibility and ensures the stability and reliability of the electrical connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present application is further described in detail below with reference to the accompanying drawings and examples.

[0018] Figure 1A perspective view of the socket according to an embodiment of the present application;

[0019] Figure 2 An exploded view of the socket according to an embodiment of the present application;

[0020] Figure 3 A perspective view of the second shielding cover according to an embodiment of the present application;

[0021] Figure 4 A perspective view of the first shielding cover according to an embodiment of the present application;

[0022] Figure 5 A perspective view of the second rubber core according to an embodiment of the present application;

[0023] Figure 6 A perspective view of the first rubber core according to an embodiment of the present application.

[0024] In the figure: 1, housing; 2, first rubber core; 201, boss; 202, anti-touch finger step; 3, first shielding cover; 301, first limiting part; 302, first clamping part; 303, shielding part; 304, third limiting part; 4, second rubber core; 401, second clamping part; 402, limiting groove; 5, second shielding cover; 501, second limiting part; 502, second clamping part; 503, vertical part; 504, horizontal part; 505, fourth limiting part; 6, interlocking wire harness; 7, contact part; 8, sealing gasket; 9, bushing. DETAILED DESCRIPTION

[0025] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects reached more clear, the technical solutions of the embodiments of the present application are described in further detail below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0026] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In the present application, unless specifically and explicitly defined otherwise, a first feature is "on" or "under" a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0028] With the rapid development of the new energy vehicle market, the demand for high-performance and high-reliability electrical connection equipment is increasing. The two-core plastic elbow socket is widely used in various industrial places due to its simple structure and flexible use, and it has great application potential in the automobile industry. However, the traditional two-core plastic elbow socket faces challenges when installing the rubber core. The shielding cover cannot be effectively installed and positioned, resulting in inaccurate installation and easy displacement during use, which affects the reliability and safety of the socket.

[0029] To solve this problem, the embodiments of the present application propose an innovative socket design, as shown in Figures 1-6 The socket includes a shell 1, a first rubber core 2, a first shielding cover 3, a second rubber core 4 and a second shielding cover 5. The shell 1 is internally designed with a transverse hole and a longitudinal hole that are connected and vertically distributed to adapt to the current transmission requirements in different directions. The first shielding cover 3 is arranged in the transverse hole, and the second shielding cover 5 is arranged in the longitudinal hole, which are respectively used to fix and protect the first rubber core 2 and the second rubber core 4.

[0030] In order to realize the accurate positioning and fixation of the rubber core, the first shielding cover 3 is designed with a first limiting part 301 on the side close to the second shielding cover 5, which tightly abuts the side edge of the first rubber core 2 to ensure the positional accuracy during installation. Similarly, the second shielding cover 5 is designed with a second limiting part 501 on the side away from the first shielding cover 3, which abuts the bottom edge of the second rubber core 4 to realize the stable fixation of the second rubber core 4. This design not only improves the installation accuracy, but also effectively prevents the rubber core from displacement after installation, thereby enhancing the use stability and safety of the socket and the connector.

[0031] In addition, the socket also adopts a bend design, which can better adapt to the use requirements of narrow or special environments, such as the interior of a car or other space-limited places. At the same time, the shield cover is made of metal material, forming a closed metal barrier that effectively prevents external electromagnetic waves from entering the connector interior, while also preventing internal electromagnetic waves from leaking to the external environment, improving the electromagnetic compatibility of the connector and ensuring the stability and reliability of the electrical connection. Further, the upper wall of the first shield cover 3 extends towards the direction of the second shield cover 5 to form a shielding part 303, which is arranged above the second rubber core 4 and abuts against the inner wall of the second shield cover 5.

[0032] In summary, the socket design provided by the embodiments of the present application effectively solves the problems existing in the installation and use of traditional two-core plastic bend sockets through innovative limit part and shield cover designs, improves the reliability and safety of the socket, and enhances its electromagnetic compatibility and adaptability, with significant technical progress and practical value.

[0033] Further optimizing the above-mentioned socket, the embodiments of the present application add an additional shielding part 303 to the first shield cover 3 to further enhance the electromagnetic shielding effect. Specifically, the upper wall of the first shield cover 3 extends towards the direction of the second shield cover 5 to form an extended shielding part 303, which is cleverly arranged above the second rubber core 4 and tightly abuts against the inner wall of the second shield cover 5. This design of the shielding part 303 effectively shields the second rubber core 4 from above, forming an additional protective layer. This means that in addition to the shielding protection provided by the second shield cover 5 to the second rubber core 4, the shielding part 303 of the first shield cover 3 also provides additional shielding from above, thereby achieving more comprehensive electromagnetic protection. Combined with the design of the first shield cover 3 and the second shield cover 5, the entire socket exhibits excellent performance in electromagnetic shielding. Whether from above, from the side or from below, it can effectively prevent external electromagnetic waves from interfering and internal electromagnetic waves from leaking. This comprehensive shielding effect not only improves the electromagnetic compatibility of the connector, but also ensures the stability and reliability of the electrical connection.

[0034] Notably, the first shield 3 and the shield part 303 are integrally formed. The integrally formed design brings several significant advantages. First, it improves the structural strength and stability of the first shield 3, as integrally formed parts are generally less prone to looseness or deformation than parts connected through assembly. Second, the integrally formed design simplifies the manufacturing process and reduces production costs, as no additional assembly steps are required. Furthermore, it also reduces potential failure points due to improper assembly, thereby improving the reliability and durability of the entire socket and connector. More importantly, the integrally formed first shield 3 and shield part 303 can provide better electromagnetic shielding effects. Since there are no seams or connection points between them, it is more difficult for electromagnetic waves to penetrate or bypass the shielding layer, thereby ensuring more comprehensive electromagnetic protection. This is crucial for improving the electromagnetic compatibility of the connector, preventing external electromagnetic interference, and preventing internal electromagnetic leakage.

[0035] Furthermore, the shield part 303 is provided with a third limiting part 304 that limits the side of the first rubber core 2. The third limiting part 304 is located at the edge of the shield part 303, and its shape and size are precisely designed to closely fit the side of the first rubber core 2. When the first rubber core 2 is correctly installed into the first shield 3, the third limiting part 304 and the first limiting part 301 cooperate to effectively limit its lateral movement, ensuring the positional accuracy and stability of the first rubber core 2 during installation.

[0036] In particular, the first limiting part 301, the second limiting part 501, and the third limiting part 304 are all arc-shaped and curved inward. This design not only enhances the structural strength and stability of the socket, but also optimizes the installation and fixation effect of the rubber core, while further improving the effectiveness of electromagnetic shielding. The arc-shaped limiting part design has several significant advantages. First, they can more closely fit the side or bottom of the rubber core, providing a more uniform and stable limiting force. This close fit helps to reduce the shifting and displacement of the rubber core during installation and use, ensuring the reliability and stability of the electrical connection. Second, the inwardly curved inner side of the arc-shaped limiting part can more effectively guide electromagnetic waves to reflect and dissipate inside the shield, rather than penetrating or bypassing the shielding layer, enhancing the shielding ability of the shield and improving the electromagnetic compatibility of the socket and connector.

[0037] In addition, the arc-shaped limiting part design also takes into account the overall aesthetics and manufacturing efficiency of the socket. They can more smoothly integrate into the overall structure of the shield, without damaging the appearance and streamlined design of the socket. At the same time, this design also simplifies the manufacturing process and reduces production costs, as the arc-shaped limiting part can be formed by a mold in one step, without the need for additional processing or assembly steps.

[0038] In some embodiments, the outer wall surface of the first shield 3 is provided with a first clamping member 302, and the first rubber core 2 is provided with a first clamping position that cooperates with the first clamping member 302. In addition, the outer wall surface of the second shield 5 is provided with a second clamping member 502, and the second rubber core 4 is provided with a second clamping position 401 that cooperates with the second clamping member 502. The outer wall surface of the first shield 3 is provided with a first clamping member 302, which can be a protruding buckle, a clamping groove, or other shaped locking structure. Correspondingly, the first rubber core 2 is provided with a first clamping position that matches the shape and position of the first clamping member 302. The first clamping position can be a recessed clamping groove, a hole, or other shaped locking area. When the first rubber core 2 is installed into the first shield 3, the first clamping member 302 tightly cooperates with the first clamping position, thereby achieving firm fixation of the first rubber core 2 in the first shield 3. Similarly, the outer wall surface of the second shield 5 is also provided with a second clamping member 502, which can be a protruding buckle, a clamping groove, or other shaped locking structure similar to the first clamping member 302. The second rubber core 4 is provided with a second clamping position 401 that matches the second clamping member 502. When the second rubber core 4 is installed into the second shield 5, the second clamping member 502 tightly cooperates with the second clamping position 401, ensuring stable fixation of the second rubber core 4 in the second shield 5. This clamping design not only simplifies the installation process of the socket and improves installation efficiency, but also enhances the connection strength and stability between the rubber core and the shield. At the same time, due to the tight cooperation of the clamping member and the clamping position, it can effectively prevent the rubber core from shaking or shifting during installation and use, thereby improving the overall reliability and durability of the socket. In addition, the clamping design also considers the maintainability and replaceability of the socket and connector. When the rubber core needs to be repaired or replaced, the rubber core can be easily disassembled by unlocking the clamping member and the clamping position without damaging the structure of the socket or the shield.

[0039] In optional embodiments of the present application, the design of the second shield 5 is further optimized to provide stronger structural support and more precise installation positioning. Specifically, the second shield 5 is designed to include a vertical part 503 and a horizontal part 504 connected to the vertical part 503, which not only enhances the overall structural strength of the second shield 5, but also enables it to better adapt to the layout requirements inside the socket. The vertical part 503 serves as the main support structure of the second shield 5, ensuring its stable installation inside the socket. The horizontal part 504 is opposite to the first shield 3 and is provided with an opening towards the first rubber core 2. The design of this opening allows the second rubber core 4 to be connected to the first rubber core 2.

[0040] Specifically, the second shielding case 5 is equipped with fourth stoppers 505 on either side of the opening. These stoppers limit the horizontal displacement of the second rubber core 4. When the second rubber core 4 is installed within the second shielding case 5, the fourth stoppers 505 fit tightly against the sides of the rubber core, preventing it from shaking or shifting during operation. This not only improves the overall stability of the socket but also ensures the reliability and safety of the electrical connection.

[0041] Generally speaking, it also includes an interlocking harness 6, which is passed through the first rubber core 2 and the second rubber core 4. The working principle of the interlocking harness 6 is based on a simple circuit principle: when the plug is correctly connected to the socket, the interlocking wire will form a closed circuit and send an interlocking signal to the device, indicating that the plug is connected in place. If the plug is loose or not connected, the interlocking wire will disconnect the circuit, and the device will receive a disconnect signal, thereby stopping operation or taking other safety measures. The main function of the interlocking harness 6 is to provide safety monitoring. In high-voltage electricity applications, such as the charging process of new energy vehicles, it is crucial to ensure that the connection between the plug and the socket is firm. The interlocking harness 6 can monitor this connection status in real time and cut off the power supply in time when the connection is not firm to prevent the device from operating in an abnormal state.

[0042] In some embodiments, two spaced-apart bosses 201 are provided on the side of the first rubber core 2 facing away from the second rubber core 4. The bosses 201 contain contacts 7 and finger-protection steps 202. The contacts 7, as the core component of the electrical connection, are responsible for transmitting electrical signals or power. The finger-protection steps 202 serve as a crucial safety barrier, effectively preventing users from accidentally touching the live contacts 7, thereby avoiding potential electric shock accidents. Furthermore, the design of the finger-protection steps 202 takes into account the stability and protective performance of the socket. They ensure that the contacts 7 remain correctly positioned and stable during installation and use, preventing loosening or displacement that could lead to poor electrical connection or failure. Notably, since two adjacent contacts 7 are disposed within corresponding bosses 201, the spacing between the bosses 201 acts as an insulating spacer between the two adjacent contacts 7. This design effectively prevents short circuits between adjacent contacts 7, thereby avoiding potential safety hazards such as electric shock and fire. The presence of the insulating spacer not only improves the safety performance of the socket, but also provides more flexible and convenient conditions for the installation and debugging of the contact 7.

[0043] Meanwhile, the bottom edge of the second rubber core 4 is provided with a limiting groove 402 for limiting the second limiting part 501. The limiting groove 402 is a groove or notch on the bottom edge of the second rubber core 4, which is matched with the second limiting part 501 in shape, size and position. When the second rubber core 4 is installed into the second shielding cover 5, the second limiting part 501 will be accurately clamped into the limiting groove 402, thereby realizing the firm fixation of the second rubber core 4 in the vertical direction.

[0044] In another aspect, a connector is also provided, which includes a plug and a socket as described above, the plug being plugged into the socket in the plugging direction, and a sealing gasket 8 being arranged at the connection position of the plug and the socket.

[0045] In the above scheme, the design of the plug fully considers the convenience of plugging and the reliability of electrical connection, and the shape and size are accurately calculated to ensure that it can tightly match the structure inside the socket to form a stable and reliable electrical connection. At the same time, the material of the plug is also carefully selected to ensure that it has sufficient strength and durability to withstand mechanical stress and electrical load during plugging. The socket part adopts the innovative design described earlier, including the first shielding cover 3, the second shielding cover 5, the first rubber core 2 and the second rubber core 4, etc. The synergistic effect of these key components not only enhances the structural stability and electromagnetic shielding effect of the socket, but also improves the reliability and safety of electrical connection.

[0046] Especially worth mentioning is that the sealing gasket 8 is arranged at the connection position of the plug and the socket. This design detail is crucial to ensure the stability and safety of electrical connection. The sealing gasket 8 can effectively block the invasion of harmful substances such as external dust and moisture, thereby preventing the electrical connection from failing due to dampness, corrosion, etc. At the same time, the sealing gasket 8 can also provide certain buffering and damping effect, reducing the friction and wear between the plug and the socket during plugging, and prolonging the service life of the connector.

[0047] In addition, a plurality of mounting holes are also arranged in the shell 1 of the socket, and a bushing 9 is correspondingly arranged in each mounting hole. The bushing 9 is usually made of wear-resistant and corrosion-resistant materials such as metal, etc., and the main function is to protect the edge of the mounting hole from being worn and corroded by mounting screws or other fixing parts, thereby prolonging the service life of the socket. At the same time, the bushing 9 can also provide certain buffering and damping effect, reducing the vibration and noise generated during installation.

[0048] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like, are intended to facilitate the description and simplify the operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", are only used to distinguish in the description, and have no special meaning.

[0049] In the description of the present application, the description referring to the terms "an embodiment", "an example", and the like, means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0050] In addition, it should be understood that although the present application is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the present application is only for the sake of clarity, and those skilled in the art should consider the present application as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0051] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for the purpose of explaining the principles of the present application, and cannot be interpreted in any way as a limitation on the scope of protection of the present application. Based on the explanation here, those skilled in the art do not need to make creative efforts to conceive other specific embodiments of the present application, and these embodiments will fall within the scope of protection of the present application.

Claims

1. A socket, characterized in that: include: A shell (1), a first rubber core (2), a first shielding cover (3), a second rubber core (4) and a second shielding cover (5), wherein the shell (1) is provided with a transverse hole and a longitudinal hole which are connected and vertically distributed, the first shielding cover (3) is arranged in the transverse hole, the second shielding cover (5) is arranged in the longitudinal hole, a first limiting portion (301) is provided on a side of the first shielding cover (3) close to the second shielding cover (5), the first rubber core (2) is arranged in the first shielding cover (3), and the side edge abuts against the first limiting portion (301) for limiting; a second limiting portion (501) is provided on a side of the second shielding cover (5) away from the first shielding cover (3), the second rubber core (4) is arranged in the second shielding cover (5), and the bottom edge abuts against the second limiting portion (501) for limiting.

2. The socket according to claim 1, wherein: The upper wall surface of the first shielding cover (3) extends toward the second shielding cover (5) to form a shielding portion (303). The shielding portion (303) is arranged above the second rubber core (4) and abuts against the inner wall surface of the second shielding cover (5).

3. The socket according to claim 2, characterized in that The shielding portion (303) is provided with a third limiting portion (304) that cooperates with the side edge of the first rubber core (2) to limit the position.

4. The socket according to claim 3, characterized in that The first limiting portion (301), the second limiting portion (501) and the third limiting portion (304) are all arc-shaped and bent inwards.

5. The socket according to any one of claims 1 to 4, characterized in that: The outer wall surface of the first shielding cover (3) is provided with a first clamping piece (302), and the first rubber core (2) is provided with a first clamping position that cooperates with the first clamping piece (302) to be clamped; and / or the outer wall surface of the second shielding cover (5) is provided with a second clamping piece (502), and the second rubber core (4) is provided with a second clamping position (401) that cooperates with the second clamping piece (502) to be clamped.

6. The socket according to any one of claims 1 to 4, characterized in that: The second shielding cover (5) comprises a vertical portion (503) and a horizontal portion (504) connected to the vertical portion (503); the horizontal portion (504) is opposite to the first shielding cover (3) and is provided with an opening toward the first rubber core (2); and fourth limiting portions (505) for limiting the horizontal displacement of the second rubber core (4) are provided on both sides of the opening.

7. The socket according to any one of claims 1 to 4, characterized in that: It also includes an interlocking harness (6), which is passed through the first rubber core (2) and the second rubber core (4).

8. The socket according to any one of claims 1 to 4, characterized in that: Two spaced-apart bosses (201) are provided on one side of the first rubber core (2) facing away from the second rubber core (4), and a contact piece (7) and an anti-touch finger step (202) are provided in the bosses (201).

9. The socket according to any one of claims 1 to 4, characterized in that: The bottom edge of the second rubber core (4) is provided with a limiting groove (402) that cooperates with the second limiting portion (501) for limiting.

10. A connector, characterized in that: It comprises a plug and a socket according to any one of claims 1 to 9, wherein the plug is plugged into the socket along a plugging and unplugging direction, and a sealing gasket (8) is provided at the connection position between the plug and the socket.

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