A plug and connector assembly

Abstract

This invention relates to the field of electrical connector technology, specifically to a plug and connector assembly. The connector assembly includes a plug and a socket. The plug includes a plug housing, plug terminals, and a plug shield. The plug housing has a mating end and a wiring end facing at an angle. The wiring end of the plug is used to connect a cable. The plug shield is located on one side of the plug terminals and has an inner shielding portion and an outer shielding portion facing at an angle. The inner shielding portion has an inner structure for engaging with a cable shielding crimp ring inside the plug housing, and the outer shielding portion has an outer structure for engaging with the socket shielding structure. The plug shield provides shielding and conduction on one side, without fully enclosing the plug terminals and the shielding portion of the connecting cable, simplifying the shielding structure. In applications where full shielding is not required, this simplifies the shielding installation structure, reduces the number of parts, reduces the amount of shielding material used, and lowers costs.

Description

Technical Field

[0001] This invention relates to the field of electrical connector technology, and more specifically to a plug and connector assembly. Background Technology

[0002] For the wiring structure of high-current single-core connectors for automobiles, please refer to the side-outlet structure of a high-current single-core connector disclosed in Chinese Utility Model Patent Document No. CN204067765U. This connector structure is used in scenarios where shielding is not required. However, current single-core high-voltage connectors for commercial vehicles generally require a certain level of shielding effectiveness and high current carrying capacity, and are compatible with large-diameter wires of 95-120 mm².

[0003] For connector assemblies with shielding structures in the prior art, please refer to Figure 1 , Figure 2 The connector assembly includes a plug 100 and a socket 200. A cable connects to the plug, and the socket is fixed to the housing of the corresponding device. The plug and socket are inserted and locked together to achieve electrical continuity. The plug 100 is a right-angle type, with its head and tail pointing vertically. The head is the insertion end, and the tail is the wiring end. The cable 300 enters from the tail of the plug, and its exit direction is consistent with the orientation of the wiring end, forming a vertical exit configuration. The plug internally contains plug terminals and a plug shield 500. The plug terminals connect to the cable cores, and the plug shield connects to the cable's shielding layer. The socket 200 is a square-plate socket, fixed to the corresponding device housing using screws. The socket internally contains socket terminals and a socket shield 600. The socket terminals connect to the internal conductors of the device, and the socket shield connects to the side wall of the device housing. After the plug and socket are inserted, the plug terminals and socket terminals are connected, and the plug shield and socket shield are connected. The plug shielding includes a shielding shell and a shielding ring. The shielding ring is crimped to the cable shielding and connected to the shielding shell. The shielding shell covers the plug terminals and forms a surrounding shield. The socket shielding is a cylindrical structure that forms a surrounding shield for the socket terminals. After the plug and socket are inserted, the socket shielding is inserted into the shielding shell of the plug shielding to form shielded conductivity. To ensure a secure connection, the plug and socket usually also have a handle locking structure. The plug housing has a rotatable locking handle 400 with a sliding groove. The socket housing has a locking pin that engages with the locking handle. After the plug and socket are inserted, rotating the locking handle causes the locking pin on the socket to enter the sliding groove on the handle until it reaches the bottom. The sliding groove is eccentric relative to the pivot of the locking handle. The locking pin can press against the inner wall of the sliding groove to pull the plug and socket together and achieve locking.

[0004] The aforementioned plug shielding structure extends from the cable shielding crimp ring to the mating insertion position, forming a fully enclosed shielding structure around the plug terminals and the connection points between the cable and the plug terminals. However, for commercial vehicle applications where the shielding performance requirements for high-voltage connectors are not high, the use of a fully enclosed shielding structure results in a complex structure, a large number of parts, and high costs. Summary of the Invention

[0005] The purpose of this invention is to provide a plug that solves the problem that the current method of forming a fully enclosed shielding structure around the plug terminals and the connection between the cable and the plug terminals is complex and costly for applications where the shielding effectiveness requirements are not high. The purpose of this invention is also to provide a connector assembly consisting of the plug and a socket adapted to the plug to solve the above problems.

[0006] The technical solution of the plug of the present invention is as follows: A plug includes a plug housing and plug terminals and a plug shield disposed within the plug housing. The plug housing has a plug-in end and a wiring end facing at an angle. The plug-in end of the plug has a plug-in structure for fitting into a socket plug-in structure. The wiring end of the plug is used to connect a cable. The plug shield is located on one side of the plug terminals and has an inner shield portion and an outer shield portion facing at an angle. The inner shield portion has an inner structure for engaging with a cable shield crimping ring within the plug housing, and the outer shield portion has an outer structure for engaging with a socket shield structure.

[0007] Furthermore, the inner shielding part and the outer shielding part are two separate parts. The inner shielding part is the inner shielding component, and the outer shielding part is the outer shielding component. Both the inner shielding component and the outer shielding component are made of sheet material.

[0008] Furthermore, the plug-in structure has a plug-in cavity into which the socket terminal extends to connect with the plug terminal, an external shield is installed in the plug-in cavity, and a shield receiving cavity communicating with the plug-in cavity is provided inside the plug housing, with an internal shield installed in the shield receiving cavity.

[0009] Furthermore, the portion of the inner shielding component located within the shielding cavity is a bent structure, which abuts against the inner wall of the shielding cavity.

[0010] Furthermore, one end of the external shielding component is provided with a contact piece that cooperates with the internal shielding component in the direction of the plug-in end, and the other end is provided with a flip claw that is locked on the edge of the plug-in cavity.

[0011] Furthermore, the inner structure is an inner spring claw for elastically abutting against the outer circumferential surface of the cable shielding crimping ring, and the outer structure is an outer spring claw for elastically abutting against the socket shielding structure.

[0012] Furthermore, the inner shielding portion is located on the side of the plug terminal closer to the plug insertion end, while the outer shielding portion is located inside the plug insertion structure on the side closer to the plug wiring end.

[0013] Furthermore, the plug terminal is provided with a plug fastening connection hole for locking and fixing with the socket terminal by fasteners. The center line of the plug fastening connection hole is collinear with the center line of the plug insertion structure. The plug housing is provided with an operating space for connecting fasteners on the side of the plug terminal opposite to the plug insertion end.

[0014] Furthermore, the plug-in structure includes at least two plug positioning structures arranged around its centerline to cooperate with the socket positioning structure to adapt to the relative positions of the positioning plug and socket after they are plugged in with different cable outgoing directions.

[0015] Furthermore, the plug positioning structure includes a positioning groove into which the positioning key of the socket positioning structure is fitted.

[0016] Furthermore, the plug-in structure has a plug-in cavity into which the plug-in end of the socket-in structure is inserted, and the inner wall of the plug-in cavity is provided with a positioning platform, and the positioning groove is formed between two adjacent positioning platforms.

[0017] Furthermore, the plug's insertion end has a circular structure, and each positioning platform has an arc-shaped structure distributed on the same circular ring.

[0018] Furthermore, the plug housing is provided with an openable operating cover, which is located on the side of the plug terminal opposite to the plug insertion end to form the operating space when opened.

[0019] Furthermore, the plug terminal is a conductive bar and its length direction is consistent with the orientation of the plug's wiring terminal. One end of the plug terminal is used to connect with the core of the single-core cable, and the other end is provided with the plug fastening connection hole.

[0020] Beneficial effects: This invention modifies the elements of the plug shielding structure in the prior art, changing the cylindrical shielding cover of the fully enclosed shielding structure into a shielding sheet with two angled parts. The angled parts of the plug shielding sheet are used to connect the internal cable shielding crimp ring and the external socket shielding structure, adapting to the cable exit direction. The plug shielding sheet located on one side of the plug terminal serves as the shielding connection, and the plug shielding sheet plays a shielding and conduction role on one side. It does not fully enclose the shielding part of the plug terminal and its connecting cable, simplifying the shielding structure. In application scenarios where full shielding is not required, it can simplify the shielding installation structure, reduce the number of parts, reduce the amount of shielding copper material used, and reduce costs.

[0021] The plug shielding body consists of separate inner and outer shielding components, facilitating installation at the corners of the plug housing and ensuring reliable internal and external contact. The inner shielding component is a sheet material with a bent structure, which increases its overall thickness. Consequently, the shielding cavity on the plug housing for installing the inner shielding component can be larger, ensuring the injection molding effect of the plug housing.

[0022] Placing the plug shield at the inner corner further reduces the amount of shielding material used. At the same time, it facilitates the formation of an operating space on the outer side of the corner for connecting fasteners, and will not affect the conductive contact of the shield when connecting the plug and socket terminals.

[0023] The technical solution of the connector assembly of the present invention is as follows: A connector assembly includes a plug and a socket adapted to be inserted into the plug. The plug includes a plug housing and plug terminals and a plug shield disposed within the plug housing. The plug housing has a plug end and a wiring end facing at an angle. The plug end of the plug has a plug insertion structure for being adapted to be inserted into the socket. The wiring end of the plug is used to connect a cable. The plug shield is located on one side of the plug terminals and has an inner shield portion and an outer shield portion facing at an angle. The inner shield portion has an inner structure for engaging with a cable shield crimping ring within the plug housing, and the outer shield portion has an outer structure for engaging with the socket shield structure.

[0024] Furthermore, the inner shielding part and the outer shielding part are two separate parts. The inner shielding part is the inner shielding component, and the outer shielding part is the outer shielding component. Both the inner shielding component and the outer shielding component are made of sheet material.

[0025] Furthermore, the plug-in structure has a plug-in cavity into which the socket terminal extends to connect with the plug terminal, an external shield is installed in the plug-in cavity, and a shield receiving cavity communicating with the plug-in cavity is provided inside the plug housing, with an internal shield installed in the shield receiving cavity.

[0026] Furthermore, the portion of the inner shielding component located within the shielding cavity is a bent structure, which abuts against the inner wall of the shielding cavity.

[0027] Furthermore, one end of the external shielding component is provided with a contact piece that cooperates with the internal shielding component in the direction of the plug-in end, and the other end is provided with a flip claw that is locked on the edge of the plug-in cavity.

[0028] Furthermore, the inner structure is an inner spring claw for elastically abutting against the outer circumferential surface of the cable shielding crimping ring, and the outer structure is an outer spring claw for elastically abutting against the socket shielding structure.

[0029] Furthermore, the inner shielding portion is located on the side of the plug terminal closer to the plug insertion end, while the outer shielding portion is located inside the plug insertion structure on the side closer to the plug wiring end.

[0030] Furthermore, the plug terminal is provided with a plug fastening connection hole for locking and fixing with the socket terminal by fasteners. The center line of the plug fastening connection hole is collinear with the center line of the plug insertion structure. The plug housing is provided with an operating space for connecting fasteners on the side of the plug terminal opposite to the plug insertion end.

[0031] Furthermore, the plug-in structure includes at least two plug positioning structures arranged around its centerline to cooperate with the socket positioning structure to adapt to the relative positions of the positioning plug and socket after they are plugged in with different cable outgoing directions.

[0032] Furthermore, the plug positioning structure includes a positioning groove into which the positioning key of the socket positioning structure is fitted.

[0033] Furthermore, the plug-in structure has a plug-in cavity into which the plug-in end of the socket-in structure is inserted, and the inner wall of the plug-in cavity is provided with a positioning platform, and the positioning groove is formed between two adjacent positioning platforms.

[0034] Furthermore, the plug's insertion end has a circular structure, and each positioning platform has an arc-shaped structure distributed on the same circular ring.

[0035] Furthermore, the plug housing is provided with an openable operating cover, which is located on the side of the plug terminal opposite to the plug insertion end to form the operating space when opened.

[0036] Furthermore, the plug terminal is a conductive bar and its length direction is consistent with the orientation of the plug's wiring terminal. One end of the plug terminal is used to connect with the core of the single-core cable, and the other end is provided with the plug fastening connection hole.

[0037] Furthermore, the socket's shielding structure includes a socket shielding ring and a socket shielding plate. The socket shielding ring is disposed within the socket insertion structure to contact the plug shielding plate body after the plug and socket are inserted. The socket shielding plate has a portion that extends into the socket housing to contact the socket shielding ring and a portion that extends into the socket housing away from its insertion end to contact the side wall of the corresponding device housing.

[0038] Furthermore, the outer circumferential surface of the socket shielding ring includes multiple planes distributed circumferentially. After the plug and socket are inserted, the external structure of the plug shielding body is connected to one of the planes.

[0039] Beneficial effects: This invention modifies the plug shielding structure of existing connector assemblies by changing the cylindrical shielding cover, which is a fully enclosed shielding structure, into a shielding sheet with two angled parts. The angled parts of the plug shielding sheet are used to connect the internal cable shielding crimp ring and the external socket shielding structure, adapting to the cable exit direction. The plug shielding sheet located on one side of the plug terminal serves as the shielding connection, and the plug shielding sheet plays a shielding and conduction role on one side. It does not fully enclose the shielding of the plug terminal and its connecting cable, simplifying the shielding structure. In application scenarios where full shielding is not required, it can simplify the shielding installation structure, reduce the number of parts, reduce the amount of shielding copper material used, and reduce costs.

[0040] The plug shielding body consists of separate inner and outer shielding components, facilitating installation at the corners of the plug housing and ensuring reliable internal and external contact. The inner shielding component is a sheet material with a bent structure, which increases its overall thickness. Consequently, the shielding cavity on the plug housing for installing the inner shielding component can be larger, ensuring the injection molding effect of the plug housing.

[0041] Placing the plug shield at the inner corner further reduces the amount of shielding material used. At the same time, it facilitates the formation of an operating space on the outer side of the corner for connecting fasteners, and will not affect the conductive contact of the shield when connecting the plug and socket terminals. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the connection between a plug and a socket in the prior art; Figure 2 for Figure 1 A schematic diagram of the shielded connection between the plug and the socket; Figure 3 This is a cross-sectional structural diagram of the plug and socket of the connector assembly in the plugged-in state according to an embodiment of the present invention; Figure 4 for Figure 3 A schematic diagram showing the head side of the plug in the picture; Figure 5 for Figure 3 A schematic diagram showing the view from one side of the tail of the plug; Figure 6 for Figure 3 A 3D diagram of the socket in the image; Figure 7 for Figure 3 A front view of the socket from the head side; Figure 8 for Figure 3 A schematic diagram of the shielded connection between the plug and the socket; Figure 9 for Figure 5A schematic diagram of the installation structure of the internal shielding component.

[0043] In the diagram: 100, plug; 200, socket; 300, cable; 301, wire core; 400, locking handle; 500, plug shield; 600, socket shield; 101. Plug housing; 1011. Positioning platform; 1012. Positioning groove; 1013. Shielding cavity; 1014. Plug terminal mounting cavity; 1015. Wire core mounting cavity; 102. Operating cover; 103. Plug terminal; 104. Tail sealing sleeve; 105. Tail cap; 106. Shielding pressure ring; 107. Inner shielding component; 1071. Inner shielding claw; 108. Outer shielding component; 109. Plug end sealing ring; 201. Socket housing; 2011. Socket ring wall; 2012. Socket end; 2013. Locating key; 202. Socket terminal; 203. Socket shielding ring; 204. Socket shielding plate. Detailed Implementation

[0044] The basic concept of the plug shielding structure design of this invention is to transform the cylindrical shielding cover of the fully enclosed shielding structure into a shielding sheet with two angled parts. The two angled parts of the plug shielding sheet are used to connect the internal cable shielding crimping ring and the external socket shielding structure. The plug shielding sheet plays a shielding and conduction role on one side, without fully enclosing the shielding of the plug terminals and their connecting cables, thus simplifying the shielding structure. In application scenarios where full shielding is not required, the shielding installation structure can be simplified, the number of parts can be reduced, and the amount of shielding copper material used can be reduced, thereby lowering costs.

[0045] The following detailed description is provided in conjunction with specific embodiments. Embodiments of the connector assembly of the present invention: like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the connector assembly includes a plug and a socket, which are two connectors that are mutually adapted for connection. The plug is connected to a cable 300, and the socket is used to fix it to the side wall of the corresponding device housing, which may be a battery pack. The connector assembly, in conjunction with the cable 300, transmits high current. The cable 300 is a single-core cable, and its exit direction relative to the plug is the direction in which it extends from the plug. The plug and socket have corresponding adaptive connection features.

[0046] The plug includes a plug housing 101 and plug terminals 103 disposed within the plug housing 101. The plug housing 101 has a mating end and a wiring end facing at an angle. The socket includes a socket housing 201 and socket terminals 202 disposed within the socket housing 201. The socket housing 201 has a mating end and a fixing end. The plug's mating end has a plug mating structure, and the socket's mating end has a socket mating structure for mating with the plug mating structure.

[0047] The wiring terminal and the plug-in terminal of the plug housing 101 are oriented perpendicularly, i.e., the included angle is 90°, and the plug is also an angle connector. The plug-in terminal and the wiring terminal of the plug housing 101 are its head end and tail end, respectively, with the wiring terminal for cable 300 to connect to. In other embodiments, the wiring terminal and the plug-in terminal of the plug may also be oriented at an obtuse angle.

[0048] The socket housing 201 is an integral structure. The plug end and the fixed end of the socket housing 201 are concentrically arranged in the plugging direction. The fixed end is provided with a square flange. The four corners of the square flange are provided with fixing holes for fixing to the side wall of the equipment housing by screws. After the socket is fixed, the end face of the socket housing 201 facing away from its plug end abuts against the side wall of the corresponding equipment housing.

[0049] The plug-in structure includes a plug cavity located at the center of the plug end of the plug housing 101 and a plug ring groove surrounding the plug cavity. The socket-in structure includes a plug ring wall 2011 and a plug end 2012. The plug ring wall 2011 and the plug end 2012 are concentrically arranged, and the plug end 2012 is located within the area enclosed by the plug ring wall 2011 and protrudes from the plug ring wall 2011. After the plug and socket are plugged in, the plug ring wall 2011 of the socket is inserted into the plug ring groove of the plug housing 101, and the plug end 2012 is inserted into the plug cavity of the plug housing 101. A plug end sealing ring 109 is provided in the plug ring groove of the plug housing 101 to form a circumferential sealing fit with the inner circumferential surface of the plug ring wall 2011.

[0050] The plug terminal 103 has a plug fastening connection hole for locking and fixing with the socket terminal 202 using fasteners. The center line of the plug fastening connection hole is collinear with the center line of the plug insertion structure. The socket terminal 202 has a socket fastening connection hole for locking and fixing with the plug terminal 103 using fasteners. The center line of the socket fastening connection hole is collinear with the center line of the socket insertion structure. Screws can be used as fasteners. After the plug and socket are plugged in, the socket fastening connection hole and the plug fastening connection hole are coaxial and correspond to each other. Both the socket fastening connection hole and the plug fastening connection hole are round holes, with the diameter of the plug fastening connection hole being slightly larger than that of the socket fastening connection hole. The plug housing 101 has an operating space for connecting fasteners on the side of the plug terminal 103 facing away from the insertion end, which can fix the plug terminal 103 and the socket terminal 202 together.

[0051] The plug and socket housings are connected via a plug-in structure, while the plug and socket terminals are connected via a fastening connection structure. The center line of the fastening connection structure is collinear with the center line of the plug-in structure, meaning they are concentric. This way, even if the plug changes its output direction (i.e., rotates around the aforementioned center line), the plug housing 101's terminal orientation changes, but the plug-in structure and the fastening connection structure of the terminals remain concentric. Fasteners can then be used to lock and secure the plug terminal 103 and socket terminal 202 together, ensuring a stable and reliable connection while allowing for changes in the output direction, facilitating wiring.

[0052] The plug housing 101 is provided with an openable operating cover 102. The operating cover 102 is located on the side of the plug terminal 103 facing away from the plug's insertion end, so as to form an operating space for fasteners to fix the connection terminal when opened. The operating cover 102 is separately provided and can be detachably fixed to the main body of the plug housing 101 by screws. There is a relatively large space inside the plug housing 101 on the side of the plug terminal 103 near the operating cover 102, which facilitates screw tightening operations. The operating cover 102 is provided with a sealing ring, which forms a sealing fit with the main body of the plug housing 101 after the operating cover 102 is closed and fixed.

[0053] The plug terminal 103 has a round hole for fastening the plug, and the socket terminal 202 has a threaded hole for fastening the socket and is a blind hole. The socket terminal 202 has an end face that protrudes from the socket housing 201 and the end face is provided with a socket fastening hole to ensure that the plug terminal 103 and the socket terminal 202 are in contact and securely fixed.

[0054] The plug-in structure includes at least two plug positioning structures arranged around its center line, and the socket-in structure includes at least two socket positioning structures arranged around its center line. The socket positioning structures, in conjunction with the plug positioning structures, adapt to the relative positions of the plug and socket after they are plugged in with different cable outgoing directions. The positioning structures prevent rotation and withstand the force of relative rotation, ensuring stable relative positions. In other embodiments, positioning structures may be omitted, and the relative positions of the plug and socket may be maintained solely by the locking of the plug terminals and socket terminals.

[0055] The plug positioning structure includes a positioning groove 1012 into which a positioning key 2013 of the socket positioning structure is adapted to be inserted. The socket positioning structure includes a positioning key 2013 for fitting into the positioning groove 1012 of the plug positioning structure. The positioning key 2013 and the positioning groove 1012 cooperate for circumferential positioning, resulting in a simple structure that is easy to mold. In other embodiments, a positioning structure in which a positioning post is inserted into a positioning hole can also be used, with the positioning post and positioning hole respectively disposed on the plug housing and the socket housing.

[0056] The plug-in structure has a plug-in cavity for inserting the plug-in end 2012 and socket terminal 202 of the socket-in structure. The inner wall of the plug-in cavity is provided with a positioning platform 1011, and a positioning groove 1012 is formed between two adjacent positioning platforms 1011. The positioning groove 1012 of the plug is adapted to the size of the positioning key 2013 of the socket. The plug-in end 2012 of the socket-in structure is used to insert into the plug-in cavity of the plug-in structure, and each positioning key 2013 is provided on the outer wall of the plug-in end 2012. The positioning platform 1011 protrudes from the inner wall of the plug-in cavity, resulting in a compact structure, saving space, and ensuring the structural strength of the plug housing 101. In other embodiments, positioning grooves can also be directly provided on the inner wall of the plug-in cavity.

[0057] The plug's insertion end has a circular structure, and each positioning platform 1011 is an arc-shaped structure distributed on the same circular ring. The insertion end of the plug housing 101 has an outer circumferential surface, and correspondingly, its inner insertion ring groove is annular, with the central plug insertion cavity being a circular cavity, and each arc-shaped positioning platform 1011 enclosing the circular cavity. The socket's insertion end has a circular structure with an outer circumferential surface, and correspondingly, its insertion ring wall 2011 is annular, the insertion end 2012 is cylindrical, and each positioning key 2013 is circumferentially distributed on the outer circumferential surface of the insertion end 2012. The insertion end 2012 is inserted into the plug insertion cavity and into the area enclosed by each positioning platform 1011, so that the positioning keys 2013 and the positioning groove 1012 form a circumferential positioning fit.

[0058] In this embodiment, the plug and socket terminals are circular, with four positioning keys 2013 evenly distributed around the circumference. The plug also has four corresponding positioning slots 1012, allowing for cable exit from the plug and socket in four directions. These keys also address the issue of wobbling after assembly. In other embodiments, eight keys can be used to achieve cable exit in eight directions. Both the plug and socket terminals are circular and symmetrically arranged, allowing for rotatable insertion. Loosening the fasteners of the locking terminals allows the plug to rotate relative to the socket. The keys also restrict cable exit to a fixed direction; the number of keys determines the number of cable exit directions, such as 4, 6, or 8.

[0059] Combination Figure 3 , Figure 5 , Figure 8 , Figure 9 The plug terminal 103 is a conductive bar with its length direction aligned with the orientation of the plug's terminals. One end of the plug terminal 103 is used to connect to the wire core 301 of the cable 300, and the other end is provided with a plug fastening connection hole. The socket terminal 202 has a cylindrical structure, and the side of the plug terminal 103 in the thickness direction is in contact with the end face of the socket terminal 202.

[0060] After the cable 300 is wired, the plug terminal 103 is soldered to the wire core 301. After soldering, the wire core 301 is melted by high temperature and takes on a flattened shape, while the part inside the cable 300 remains round. The plug connects only one cable 300, which has only one wire core 301, and there is only one plug terminal 103, which is fixedly connected to one side of the wire core 301. The plug housing 101 has a portion extending along the terminal, which contains a mounting cavity. The cable 300 extends into this mounting cavity, and the plug terminal 103 extends to the plug insertion cavity. The terminal of the plug housing 101 is provided with a tail sealing sleeve 104 and a tail cap 105. The tail sealing sleeve 104 is used to seal between the outer sheath of the cable 300 and the inner wall of the plug housing 101, and the tail cap 105 is connected to the tail end of the plug housing 101 and can limit the tail sealing sleeve 104.

[0061] The plug housing 101 has a plug shielding structure, and the socket housing 201 has a socket shielding structure. The plug shielding structure is connected to the cable shielding layer, and the socket shielding structure is connected to the metal housing of the equipment. After the plug and socket are plugged in, the socket shielding structure is connected to the plug shielding structure.

[0062] The plug shielding structure includes a shielding connection structure and a shielding pressure ring 106. The shielding pressure ring 106 is used to crimp and fix the shielding layer of the cable 300, forming a cable shielding crimping ring. The shielding connection structure is the plug shielding plate, which is located on one side of the plug terminal 103 and has an inner shielding part and an outer shielding part set at an angle. The inner shielding part has an inner structure for connecting with the cable shielding crimping ring inside the plug housing 101, and the outer shielding part has an outer structure for connecting with the socket shielding structure. The angled two parts of the plug shielding plate are used to connect the inner cable shielding crimping ring and the outer socket shielding structure, adapting to the cable outlet direction. The plug shielding plate located on one side of the plug terminal serves as the shielding connection structure, providing shielding conductivity on one side. It does not fully enclose the shielding part of the plug terminal and its connecting cable, simplifying the shielding structure. In application scenarios where full shielding coverage is not required, it simplifies the shielding installation structure, reduces the number of parts, and reduces the amount of shielding copper material used, thus lowering costs.

[0063] The plug shielding body includes a separate inner shielding component 107 and an outer shielding component 108. Both the inner and outer shielding components are made of sheet material. The inner shielding component constitutes the inner shielding portion, and the outer shielding component constitutes the outer shielding portion. The inner shielding component 107 and the outer shielding component 108 are arranged perpendicularly. The inner shielding component 107 contacts the shielding pressure ring 106, and one end of the outer shielding component 108 contacts the inner shielding component 107, while the other end contacts the socket shielding structure. The inner shielding component 107 has a portion for contacting the shielding pressure ring 106 that fixes the shielding layer of the cable 300, and the outer shielding component 108 has a portion for contacting the socket shielding structure. The plug shielding body is composed of separate inner and outer shielding components, which facilitates installation at the corners of the plug housing and improves reliable internal and external contact. In other embodiments, the shielding connection structure can also adopt an integral L-shaped structure.

[0064] The plug terminal 103 is located on the side of the wire core 301 near the plug insertion end, and the inner shield 107 is located on the side of the plug terminal 103 near the plug insertion end. The outer shield 108 is disposed on the part of the plug insertion cavity near the wiring end.

[0065] The plug housing 101 has two integral parts forming an angle of 90°, with the wiring terminal and the plug-in terminal located on these two parts respectively. The plug-in cavity is located within the part containing the plug-in terminal. The mounting cavity within the wiring terminal part of the plug housing 101 includes a shielding receiving cavity 1013, a plug terminal mounting cavity 1014, and a wire core mounting cavity 1015. The wire core mounting cavity 1015 is for inserting the wire core 301. The plug terminal mounting cavity 1014 communicates with the plug-in cavity and the operating space, and is for inserting the plug terminal 103. Part of the plug terminal 103 is located in the plug terminal mounting cavity 1014, and part extends into the corresponding operating space. The plug terminal mounting cavity 1014 is located on the side of the wire core mounting cavity 1015 closer to the plug-in terminal, and the shielding receiving cavity 1013 is located on the side of the wire core mounting cavity 1015 closer to the plug-in terminal.

[0066] The shielding cavity 1013 communicates with the plug insertion cavity. The shielding cavity 1013 is used to install the inner shielding component 107. The portion of the inner shielding component 107 located within the shielding cavity 1013 has a bent structure, which abuts against the inner wall of the shielding cavity 1013. The inner shielding component is a bent sheet structure, which increases its overall thickness. Correspondingly, the shielding cavity 1013 on the plug housing 101 for installing its inner shielding component can be larger, ensuring the injection molding effect of the plug housing. In other embodiments, the inner shielding component can also be a flat sheet and integrally injection molded within the plug housing.

[0067] The inner shield 107 includes a U-shaped portion and an abutting portion. The opening of the U-shaped portion faces the side where the cable 300 is located. The abutting portion includes a flat sheet and an inner shield claw 1071 formed based on the sheet. The inner shield claw 1071 abuts against the outer peripheral surface of the shielding pressure ring 106.

[0068] The shielding cavity 1013 is a square cavity, which can be used with the U-shaped part of the inner shielding component 107 to limit and fix the inner shielding component 107, thus securing it firmly without the need for additional insulation and shielding, saving on the number of parts and reducing costs. The square cavity has dimensions that meet the requirements of injection molding.

[0069] The external shield 108 is installed in the plug cavity. The arrangement direction of the external shield 108 is perpendicular to the arrangement direction of the internal shield 107. The main body of the external shield 108 is a flat sheet. One end of the sheet is provided with a contact piece and the other end is provided with a contact claw. The contact piece protrudes perpendicular to the main body and abuts against the inner side of the bottom wall of the U-shaped part of the internal shield 107. The contact claw is located in the plug cavity to contact the socket shielding ring 203 of the socket shielding structure.

[0070] One end of the external shield 108 has a contact piece that engages with the inner shield 107 in the direction of the plug-in end. The other end has a flip claw that is engaged with the edge of the plug-in cavity. The flip claw is bent to form a groove, so that the groove at the end of the external shield 108 away from the inner shield is engaged with the annular portion between the plug-in ring groove of the plug housing 101 and the plug-in cavity, and is engaged with the outward end of the annular portion. In this way, the position of the external shield 108 is maintained by the cooperation of the outer flip claw and the inner contact piece.

[0071] The inner shielding claw 1071 of the inner shielding member 107 constitutes an inner structure and forms an inner spring claw for elastically abutting against the outer peripheral surface of the cable shielding crimp ring. The contact spring claw of the outer shielding member 108 constitutes an outer structure and forms an outer spring claw for elastically abutting against the socket shielding structure.

[0072] Both the inner shield 107 and the outer shield 108 are located on the side of the plug terminal 103 facing away from the operating space. That is, the inner shield is located on the side of the plug terminal closer to the plug insertion end, and the outer shield is located inside the plug insertion structure on the side closer to the plug wiring end. This can further simplify the shielding structure, reduce the amount of shielding material used, and not affect the operating space.

[0073] The socket's shielding structure includes a socket shielding ring 203 and a socket shielding plate 204. The socket shielding ring 203 is disposed within the socket insertion structure to contact the plug shielding structure after the plug and socket are inserted. The socket shielding plate 204 has a portion that extends into the socket housing 201 to contact the socket shielding ring 203 and a portion that extends into the socket housing 201 with its end face facing away from its insertion end to contact the side wall of the corresponding device housing.

[0074] The socket shielding ring 203 is lower than the outer end face of the socket terminal 202 and also lower than the outer end face of the plug-in end 2012, and does not form a full-encirclement shield for the socket terminal. The socket shielding ring 203 is a circular or polygonal ring, formed by bending sheet material. The socket shielding ring 203 is fitted onto the bottom of the plug-in end 2012 and is located between the plug-in end 2012 and the plug-in ring wall 2011, without protruding from the plug-in ring wall 2011, and is located on the bottom side of the positioning key 2013. The positioning platform 1011 is a certain distance from the end face of the plug-in end of the plug housing 101, which can avoid the socket shielding ring 203. The outer peripheral surface of the socket shielding ring 203 abuts against the corresponding external spring claw of the external shielding member 108.

[0075] In this embodiment, the socket shielding ring 203 is a polygonal ring with multiple circumferentially distributed planes on its outer circumference. These planes can be formed by bending a sheet multiple times, and the sheets are joined end to end to form a ring. The planes are symmetrically distributed and ensure that after the plug and socket are plugged in, the external structure of the plug shielding sheet is connected to one of the planes. That is, no matter what direction the wires are routed, the external spring claw of the external shielding member 108 can abut against one of the planes of the socket shielding ring 203 to ensure reliable contact.

[0076] The socket shield 204 is generally L-shaped, comprising a portion parallel to the socket centerline and a portion perpendicular to the socket centerline. These two portions are respectively the portion extending into the socket housing 201 to contact the socket shield ring 203 and the portion extending to the end face of the socket housing 201 facing away from its insertion end for contacting the side wall of the corresponding equipment housing. The socket housing 201 has a mounting groove with an end face passing through the fixed end and leading to the socket shield ring 203. The parallel portion of the socket shield 204 is inserted into this mounting groove and abuts against the inner circumferential surface of the socket shield ring 203 via contact claws provided thereon. The vertical portion of the socket shield 204 has spring claws for contacting the side wall of the equipment housing.

[0077] The connector's shielding structure is simple, requiring no fully enclosed shielding structure, yet it achieves shielding and conductivity while significantly reducing the use of copper. It is suitable for commercial vehicle applications where the shielding performance requirements for high-voltage connectors are not high.

[0078] Embodiments of the plug of the present invention: The structure of the plug in this embodiment is the same as that of the plug in the above-described connector assembly embodiment, and will not be described again here.

[0079] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plug, characterized in that, The device includes a plug housing (101), a plug terminal (103) disposed within the plug housing, and a plug shield. The plug housing has a plug end and a wiring end facing at an angle. The plug end of the plug is provided with a plug plug structure for fitting into the socket plug structure. The wiring end of the plug is used to connect a cable (300). The plug shield is located on one side of the plug terminal and has an inner shield portion and an outer shield portion arranged at an angle. The inner shield portion is provided with an inner structure for connecting to the cable shield crimping ring inside the plug housing, and the outer shield portion is provided with an outer structure for connecting to the socket shield structure.

2. The plug according to claim 1, characterized in that, The inner shielding part and the outer shielding part are two separate parts. The inner shielding part is the inner shielding component (107), and the outer shielding part is the outer shielding component (108). Both the inner shielding component (107) and the outer shielding component (108) are made of sheet material.

3. The plug according to claim 2, characterized in that, The plug connection structure has a plug connection cavity into which the socket terminal (202) extends to connect with the plug terminal (103), an external shield (108) is installed in the plug connection cavity, and a shield receiving cavity (1013) communicating with the plug connection cavity is provided in the plug housing (101), and an internal shield (107) is installed in the shield receiving cavity (1013).

4. The plug according to claim 3, characterized in that, The portion of the inner shield (107) located inside the shielding cavity (1013) is a bent structure, and the bent structure abuts against the inner wall of the shielding cavity (1013).

5. The plug according to claim 3, characterized in that, One end of the external shield (108) is provided with a contact piece that cooperates with the internal shield (107) in the direction of the plug end, and the other end is provided with a flip claw that is locked on the edge of the plug cavity.

6. The plug according to any one of claims 1-5, characterized in that, The inner structure is an inner spring claw for elastically abutting against the outer circumferential surface of the cable shielding crimping ring, and the outer structure is an outer spring claw for elastically abutting against the socket shielding structure.

7. The plug according to any one of claims 1-5, characterized in that, The inner shielding part is located on the side of the plug terminal (103) near the plug insertion end, and the outer shielding part is located inside the plug insertion structure on the side near the plug wiring end.

8. The plug according to any one of claims 1-5, characterized in that, The plug terminal (103) is provided with a plug fastening connection hole for locking and fixing with the socket terminal (202) by fasteners. The center line of the plug fastening connection hole is collinear with the center line of the plug insertion structure. The plug housing (101) is provided with an operating space for connecting fasteners on the side of the plug terminal (103) facing away from the plug insertion end.

9. The plug according to claim 8, characterized in that, The plug-in structure includes at least two plug positioning structures arranged around its centerline to accommodate the relative positions of the positioning plug and socket (200) after they are plugged in with different outgoing wire directions.

10. The plug according to claim 9, characterized in that, The plug positioning structure includes a positioning groove (1012) into which the positioning key (2013) of the socket positioning structure is adapted to be inserted.

11. The plug according to claim 10, characterized in that, The plug-in structure has a plug-in cavity into which the plug-in end (2012) of the socket-in structure is inserted. The inner wall of the plug-in cavity is provided with a positioning platform (1011), and the positioning groove (1012) is formed between two adjacent positioning platforms (1011).

12. The plug according to claim 11, characterized in that, The plug's insertion end has a circular structure, and each positioning platform (1011) is an arc-shaped structure distributed on the same circular ring.

13. The plug according to claim 8, characterized in that, The plug housing (101) is provided with an openable operating cover (102), which is located on the side of the plug terminal (103) opposite to the plug insertion end to form the operating space when opened.

14. The plug according to claim 8, characterized in that, The plug terminal (103) is a conductive bar and its length direction is consistent with the orientation of the plug terminal. One end of the plug terminal (103) is used to connect with the wire core (301) of the single-core cable, and the other end is provided with the plug fastening connection hole.

15. A connector assembly, characterized in that, Includes the plug (100) as described in any one of claims 1-14 above and the socket (200) adapted to be plugged into the plug.

16. The connector assembly according to claim 15, characterized in that, The shielding structure of the socket (200) includes a socket shielding ring (203) and a socket shielding plate (204). The socket shielding ring (203) is disposed within the socket insertion structure for contacting the plug shielding plate body after the plug (100) is inserted into the socket (200). The socket shielding plate (204) has a portion extending into the socket housing (201) to contact the socket shielding ring (203) and a portion extending into the socket housing (201) with an end face facing away from its insertion end for contacting the side wall of the corresponding device housing.

17. The connector assembly according to claim 16, characterized in that, The outer circumferential surface of the socket shielding ring (203) includes multiple planes distributed circumferentially. After the plug (100) is inserted into the socket (200), the external structure of the plug shielding body is connected to one of the planes.

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