Compact light-weight connector

Abstract

A plug comprises a head shell and a head terminal assembly installed in the head shell, head power terminals are installed in a head insulating sheath in pairs, the head insulating sheath is further sleeved with a head shielding cover, a head interlocking terminal is further installed in the head insulating sheath, the head interlocking terminal is located between the two head power terminals, and the head shielding cover is connected with the head power terminals. A head interlocking end cover is also mounted on the head insulating sheath; the socket comprises a socket shell and a socket terminal assembly installed in the socket shell, the socket terminal assembly comprises a socket insulating sheath and a socket shielding cover sleeved on the insulating sheath, socket power terminals and socket interlocking terminals are installed in the socket insulating sheath, and the socket interlocking terminals are located between the two socket power terminals. The beneficial effects of the invention are that the structure of the connector is simplified, redundant nesting structures of the plug end cover, the housing and the insulating sheath are removed, heat dissipation obstruction in the connector is reduced, and the heat dissipation performance of the connector is improved by adopting multiple buckle cooperation while the working reliability of the connector is ensured.

Description

Technical Field

[0001] This invention relates to connectors, and more particularly to a compact and lightweight connector. Background Technology

[0002] Electrical connectors are commonly used for electrical connections between equipment and cables to transmit electrical energy and signals, and are typically designed with two parts: a plug and a socket. For electrical connectors whose core purpose is to transmit electrical energy, the contact area between the plug and socket terminals generates resistance heat due to contact resistance. As this heat accumulates, the temperature gradually rises until thermal equilibrium is reached. Currently, high-voltage connectors used in new energy vehicles have complex structures and often employ multi-layered plastic nested structures. Because plastic itself has poor thermal conductivity, the connector's heat dissipation capacity is poor, leading to significant internal heat accumulation. Furthermore, the limited high-temperature resistance of the component materials restricts the current-carrying capacity of current high-voltage connectors.

[0003] To improve the current-carrying capacity of connectors, it is usually necessary to improve the high-temperature resistance of connector materials, reduce terminal contact resistance, or optimize the structure to improve the connector's heat dissipation. Improving the high-temperature resistance of materials significantly increases connector manufacturing costs, which is detrimental to cost control. Reducing contact resistance requires long-term, iterative design optimization and verification, resulting in high development costs and limited performance improvements. Optimizing the structure simplifies the connector structure, reduces structural obstruction to heat dissipation, and simultaneously reduces the connector's size and volume, thus lowering costs; this is the quickest and most effective method. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a compact and lightweight connector.

[0005] The objective of this invention is achieved through the following technical solution: a compact and lightweight connector, comprising a plug and a socket, wherein the plug and socket are mated together, and the plug and socket are locked by a locking member mounted on the plug, characterized in that: The plug includes a head housing and a head terminal assembly installed within the head housing. The head terminal assembly includes a head insulating sleeve, a head shield, and head power terminals. The head power terminals are installed inside the head insulating sleeve, and the head shield is also fitted onto the head insulating sleeve. A head interlock terminal is also installed inside the head insulating sleeve and is located between the two head power terminals. The socket includes a socket housing and a socket terminal assembly installed inside the socket housing. The socket terminal assembly includes a socket insulating sleeve and a socket shield fitted on the insulating sleeve. A socket power terminal and a socket interlock terminal are installed inside the socket insulating sleeve, and the socket interlock terminal is located on the side of the socket power terminal. The socket shield is provided with an inwardly protruding inner shield contact spring. The rear end of the socket housing has a mating cavity. The inner wall of the mating cavity is provided with several protruding ribs, and the several protruding ribs are in contact with the outer wall of the socket shield. When the plug and socket are connected, the head power terminal and the socket power terminal are connected, and the socket interlock terminal and the head interlock terminal are connected.

[0006] Optionally, the head insulating sleeve is stepped, including a front part and a rear part of the sleeve, and the head shield is also stepped, and the head shield is fastened to the head insulating sleeve.

[0007] Optionally, the head shield includes an upper shield and a lower shield. Both the front side walls of the upper and lower shields are provided with front buckles, and both rear side walls of the upper and lower shields are provided with rear buckles. The left and right side walls of the front of the sheath are provided with front slots corresponding to the front buckles, and the left and right side walls of the rear of the sheath are provided with rear slots corresponding to the rear buckles. The front buckles of the upper and lower shields are all engaged in the front slots, and the rear buckles of the upper and lower shields are all engaged in the rear slots. The upper and lower shields cover the head insulating sheath.

[0008] Optionally, the rear ends of the upper and lower shields are provided with forward-bent shielding contact springs, and the rear end face of the sheath is provided with a recessed notch to facilitate the entry of the shielding contact springs.

[0009] Optionally, the head housing includes a front part, a middle part, and a rear part. The middle part extends from the rear to the front to form a mounting hole, and an annular mounting groove is formed between the outer wall of the middle part and the inner wall of the front part. A head sealing ring is fitted on the middle part and is located in the annular mounting groove. Locking grooves are provided on the upper and lower side walls of the inner cavity of the rear part. Rear locking springs corresponding to the locking grooves are provided on the upper and lower side walls of the rear part of the head shield. The rear end of the rear locking spring is located in the locking groove. A front locking spring is also provided on the upper and lower side walls of the front part of the head shield. A head end cap is also fitted on the front part of the head shield. A pressing groove corresponding to the front locking spring is provided on the front side wall of the head end cap. The rear end of the front locking spring is pressed against the corresponding pressing groove, and the head end cap squeezes the head sealing ring.

[0010] Optionally, the head insulating sleeve is provided with an interlock terminal hole, the interlock terminal hole has a limiting groove, and the head interlock terminal is provided with a terminal locking protrusion, which is locked in the limiting groove.

[0011] Optionally, the tail end of the head housing is also equipped with a tail accessory, which includes a cable shielding outer cover, a cable shielding inner ring, a cable sealing ring, and a head and tail cover. The cable shielding inner ring is installed inside the cable shielding outer cover, the cable shielding outer cover is installed in the rear inner cavity of the head insulating terminal, and the cable shielding outer cover is located behind the head power terminal. The cable shielding outer cover is in contact with the head shielding cover. The cable sealing ring is installed in the rear inner cavity of the housing. The head and tail covers are installed at the rear end of the head housing, and the head and tail covers press the cable sealing ring between the terminal assembly and the head and tail covers.

[0012] Optionally, a shielding spring is provided at the front end of the seat shield, and the seat shield and the seat insulating sleeve are positioned by an anti-reverse mechanism.

[0013] Optionally, the front end of the seat shield is provided with a notch, and a cantilever is provided at the notch. The cantilever bends backward to form a shielding spring. A protruding ridge is provided in the middle of the seat insulating sleeve. A spring receiving groove is formed between two adjacent protruding ridges. The shielding spring is located in the spring receiving groove, and the protruding ridge is located in the receiving notch on one side of the shielding spring. The high point of the seat shield protrudes out of the spring receiving groove.

[0014] Optionally, the anti-reverse mechanism includes a seat shield notch, a seat sleeve locking protrusion, a seat shield locking spring, and an anti-reverse step. The seat shield locking notch is opened on the straight arm of the cantilever. The bottom of the spring receiving groove is provided with a seat sleeve locking protrusion. The seat sleeve locking protrusion is locked in the corresponding seat shield notch. Seat shield locking springs are opened on both the upper and lower surfaces of the seat shield. An anti-reverse step is provided inside the seat housing. The shield locking spring abuts against the anti-reverse step.

[0015] This invention offers the following advantages: The compact and lightweight connector of this invention, while ensuring reliable operation, simplifies the connector structure through a multi-clamping mechanism. It eliminates redundant nested structures in the plug end cap, outer shell, and insulating sheath, reducing internal heat dissipation obstruction and improving heat dissipation performance. Simultaneously, the simplified structure significantly reduces the overall size of the connector, decreasing its volume by approximately 25% compared to traditional structures. This size reduction also reduces the amount of raw materials used in the components, resulting in a weight reduction of approximately 20% compared to traditional structures, thereby directly lowering manufacturing costs. Therefore, this compact and lightweight connector plays a positive role in improving the heat dissipation capacity of high-voltage connectors in new energy vehicle washing systems, promoting lightweighting of new energy vehicles, and reducing overall vehicle manufacturing costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a compact and lightweight connector; Figure 2 A cross-sectional schematic diagram of a compact and lightweight connector; Figure 3 This is a schematic diagram of an explosion of the plug; Figure 4 This is an exploded view of the head terminal assembly; Figure 5 Schematic diagram of the plug structure Figure 1 ; Figure 6 Schematic diagram of the plug structure Figure 2 ; Figure 7 This is a cross-sectional view of the plug; Figure 8 This is a diagram illustrating the explosion of the socket. Figure 9 An exploded view of the terminal block assembly; Figure 10 Schematic diagram of the socket structure Figure 1 ; Figure 11 Schematic diagram of the socket structure Figure 2 ; Figure 12 A cross-sectional view of the socket. In the diagram, 1-plug, 2-socket, 101-head housing, 102-locking element, 103-head interlocking end cap, 104-head interlocking terminal, 105-head end cap, 106-head sealing ring, 107-head shielding cover, 108-head insulating sleeve, 109-head power terminal, 110-cable shielding outer cover, 111-cable shielding inner ring, 112-cable sealing ring, 113-head and tail caps, 1011-front of housing, 1012-middle of housing Part, 1013-Locking groove, 1014-Rear part of the shell, 1031-End cover locking protrusion, 1041-Terminal locking protrusion, 1051-Pressure groove, 1052-Snap-fit ​​surface, 1061-Guide surface, 1071-Upper shielding cover, 1072-Lower shielding cover, 1073-Front latch, 1074-Rear latch, 1075-Front locking spring, 1076-Shielding contact spring, 1077-Rear locking spring, 108 1-Front part of the sheath, 1082-Rear part of the sheath, 1083-Front slot, 1084-Rear slot, 1085-Head stop, 1086-Recessed notch, 1087-Interlock terminal hole, 1088-Locking hole, 201-Housing housing, 202-Housing bushing, 203-Housing sealing ring, 204-Housing shield, 205-Housing insulating sheath, 206-Housing power terminal, 207-Housing interlock terminal, 2011-Merging cavity, 20 12-Protruding rib, 2013-Anti-reverse step, 2041-Inner shield contact spring, 2042-Seat shield locking spring, 2043-Seat shield locking notch, 2044-Outer shield contact spring, 2045-Accommodation notch, 2051-Matching area, 2052-Seat sleeve relief notch, 2053-Seat sleeve clearance groove, 2054-Seat sleeve locking protrusion, 2055-Seat sleeve stop, 2056-Protruding ridge, 2057-Spring receiving groove. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this invention and simplifying the description, 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 invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] like Figure 1 and Figure 2 As shown, a compact and lightweight connector includes a plug 1 and a socket 2. The plug 1 and socket 2 are mated together, and the plug 1 and socket 2 are locked by a locking member 102 mounted on the plug 1. The locking of the plug 1 and socket 2 by the locking member 102 is prior art, and the locking member 102 is also a prior art product; therefore, the structure and locking principle of the locking member 102 will not be described further. In this embodiment, as... Figure 3As shown, the plug 1 includes a head housing 101, a head terminal assembly, and a tail accessory for securing the cable. The tail accessory is installed at the tail of the head housing 101, and the head terminal assembly is installed inside the head housing 101. Further, as... Figure 4 As shown, the head terminal assembly includes a head insulating sleeve 108, a head shield 107, and head power terminals 109. The head power terminals 109 are installed in pairs inside the head insulating sleeve 108. The head shield 107 is also fitted onto the head insulating sleeve 108. A head interlock terminal 104 is also installed inside the head insulating sleeve 108, located between the two head power terminals 109. A head interlock end cap 103 is also installed on the head insulating sleeve 108 to restrict the forward and backward movement of the head interlock terminal 104. The head interlock end cap 103 has through holes corresponding to the contact terminals of the head interlock terminal 104. When the plug 1 and socket 2 are inserted, the socket interlock terminal 207 is inserted through this through hole and engages with the head interlock terminal 104. Similarly, a socket hole is also provided on the head insulating sleeve 108, through which the socket power terminal 206 is inserted and engages with the head power terminal 109.

[0024] In this embodiment, as Figure 3 and Figure 4As shown, the head insulating sleeve 108 is stepped, including a front part 1081 and a rear part 1082. The head shield 107 is also stepped, and the head shield 107 is fastened to the head insulating sleeve 108. In this embodiment, the head shield 107 also has a front part and a rear part. The front part 1081 of the sleeve is covered by the front part of the head shield 107, and the rear part 1082 of the sleeve is covered by the rear part of the seat shield 204. Further, the head shield 107 includes an upper shield cover 1071 and a lower shield cover 1072. Front buckles 1073 are provided on both sides of the front part of the upper shield cover 1071 and the lower shield cover 1072. Both the upper and lower shielding covers 1071 and 1072 have rear latches 1074 on their rear side walls. The left and right side walls of the front part 1081 of the sheath have front slots 1083 corresponding to the front latches 1073, and the left and right side walls of the rear part 1082 of the sheath have rear slots 1084 corresponding to the rear latches 1074. The front latches 1073 of both the upper and lower shielding covers 1071 and 1072 are engaged in the front slots 1083, and the rear latches 1074 of both the upper and lower shielding covers 1071 and 1072 are engaged in the rear slots 1084. Furthermore, the upper and lower shielding covers 1071 and 1072 completely cover the head insulating sheath 108. In this embodiment, the upper and lower shielding covers are symmetrically mounted on the head insulating sleeve 108. Both the upper and lower shielding covers have grooves that cover the head insulating sleeve 108, with a U-shaped cross-section. The front end face of the front latch 1073 is flush with the front end face of the shielding cover, while a notch is provided on the side wall of the shielding cover. The latching end of the front latch 1073 has an inwardly curved portion. Therefore, when the shielding cover is installed, the front latch 1073 will open outwards, generating an elastic restoring force. When the latching end of the front latch 1073 is located in the front slot 1083, under the action of the elastic restoring force, the front latch 1073 will engage with the front... Similarly, within the front slot 1083, two notches are opened at the rear of the shielding cover, and the rear buckle 1074 is located between the two notches. The snapping end of the rear buckle 1074 is also hinged with an inwardly bent part. Therefore, during installation, the rear buckle 1074 will also open outward to generate an elastic restoring force. When the snapping end of the rear buckle 1074 is located in the front slot 1083, under the action of the elastic restoring force, the rear buckle 1074 will snap into the rear slot 1084, thereby realizing the installation of the shielding cover and the head insulating sleeve 108. After the upper shielding cover and the lower shielding cover are installed, the upper shielding cover and the lower shielding cover will cover the head insulating sleeve 108.

[0025] In this embodiment, as Figure 3 and Figure 4As shown, a head stop 1085 is provided on the outer side wall of the front part 1081 of the sheath. The front end face of the head shield 107 abuts against the head stop 1085. Therefore, during installation, the front end face of the head shield 107 can be abutted against the head stop 1085 first, and then the head shield 107 can be fastened to the head insulating sheath 108, thereby ensuring the installation accuracy of the head shield 107. Moreover, since both the head insulating sheath 108 and the head shield 107 are stepped structures, the front end of the head shield 107 is abutted against by the head stop 1085, while the rear end of the head shield 107 is limited by the stepped step, thereby ensuring the relative position stability of the head shield 107 and the head insulating sheath 108.

[0026] In this embodiment, as Figure 3 and Figure 4 As shown, the rear ends of the upper and lower shields are provided with forward-bent shielding contact springs 1076, and the rear end face of the rear part 1082 of the sheath is provided with a recessed notch 1086 to facilitate the entry of the shielding contact springs 1076. Preferably, there are two shielding contact springs 1076 on the upper and lower shields. After the upper and lower shields are installed on the head insulating sheath 108, the four shielding contact springs 1076 are arranged in a matrix.

[0027] In this embodiment, as Figure 3 and Figure 4 As shown, the head insulating sleeve 108 has an interlocking terminal hole 1087, and the interlocking terminal hole 1087 has a backstop groove. The head interlocking terminal 104 is provided with a terminal locking protrusion 1041, which is locked in the backstop groove. The head insulating sleeve 108 is also equipped with a head interlocking end cover 103 that moves back and forth between the head interlocking terminal 104 and the head interlocking end cover 103 has a through hole corresponding to the contact terminal of the head interlocking terminal 104. Furthermore, the upper and lower side walls of the interlocking terminal hole 1087 have locking holes 1088, and the upper and lower side walls of the head interlocking end cover 103 have end cover locking protrusions 1031. The head interlocking end cover 103 is inserted into the interlocking terminal hole 1087, and the end cover locking protrusions 1031 are located in the locking holes 1088.

[0028] In this embodiment, as Figure 5 , Figure 6 and Figure 7As shown, the head housing 101 includes a front portion 1011, a middle portion 1012, and a rear portion 1014. The middle portion 1012 extends from rear to front to form a mounting hole, and an annular mounting groove is formed between the outer side wall of the middle portion 1012 and the inner wall of the front portion 1011. A head sealing ring 106 is fitted onto the middle portion 1012, and the head sealing ring 106 is located in the annular mounting groove. Locking grooves 1013 are provided on the upper and lower side walls of the inner cavity of the rear portion 1014. The upper and lower side walls of the rear part of the head shield 107 are provided with locking grooves 1013. The rear locking spring 1077 corresponding to 13 has its rear end located within the locking groove 1013. Therefore, when the head terminal assembly retracts axially, the rear end face of the rear locking spring 1077 will abut against the rear end face of the locking groove 1013, thereby preventing the head terminal assembly from retracting axially. A front locking spring 1075 is also provided on the upper and lower sidewalls of the front part of the head shield 107. A head end cap 105 is also fitted onto the front part of the head shield 107. The front sidewall of the head end cap 105 has an opening that corresponds to the front locking spring 1075. The corresponding pressing groove 1051 of 075, the rear end of the front locking spring 1075 abuts against the corresponding pressing groove 1051, and the head end cover 105 presses against the head sealing ring 106. In this embodiment, the inner cavity of the rear part 1014 of the shell and the inner cavity of the middle part 1012 of the shell form a stepped hole, and the rear front end face of the shielding cover abuts against the stepped surface of the stepped hole. Preferably, a plurality of rearwardly protruding pads are provided on the stepped hole, and the rear front end face of the shielding cover abuts against the stepped surface of the stepped hole, thereby preventing the head terminal assembly from moving axially forward. In one step, the front part 1081 of the head insulating sleeve 108 has a rectangular cross-section. Therefore, the front part of the head shield 107 is also rectangular. The mounting hole in the middle part 1012 of the shell is a matching rectangular cavity. Therefore, when the head terminal assembly is installed, the head terminal assembly will not rotate circumferentially relative to the head shell 101. Moreover, the rear locking spring 1077 abuts against the locking groove 1013, thereby preventing the head terminal assembly from moving axially backward, thus ensuring the stability of the relative position between the head terminal assembly and the head shell 101.

[0029] In this embodiment, as Figure 3 , Figure 4 and Figure 7 As shown, the front end face of the head sealing ring 106 is provided with a guide surface 1061, and the rear end face of the head end cover 105 is provided with a fastening surface 1052 that matches the guide surface 1061. The fastening surface 1052 presses against the guide surface 1061. When the head terminal assembly is installed, the rear end of the front locking spring 1075 abuts against the corresponding pressing groove 1051, thereby the front locking spring 1075 can apply a rearward axial thrust to the head end cover 105, thereby causing the fastening surface 1052 to press against the guide surface 1061, preventing the head sealing ring 106 from falling off. At the same time, when the plug 1 and the socket 2 are plugged in, the head sealing ring 106 can be pressed tightly, thereby ensuring the reliability of the head sealing ring 106.

[0030] In this embodiment, as Figure 3 , Figure 4 and Figure 7 As shown, the tail accessory includes a cable shielding cover 110, a cable shielding inner ring 111, a cable sealing ring 112, and a head and tail cover 113. The cable shielding inner ring 111 is installed inside the cable shielding cover 110. The cable shielding cover 110 is installed in the rear inner cavity of the head insulating terminal and is located behind the head power terminal 109. The cable shielding cover 110 contacts the head shielding cover 107. The cable sealing ring 112 is installed in the inner cavity of the rear part 1014 of the housing. The head and tail cover 113 is installed at the rear end of the head housing 101 and presses the cable sealing ring 112 between the head terminal assembly and the head and tail cover 113. In this embodiment, the cable has a signal transmission line connected to the head power terminal 109 and a signal transmission line connected to the head interlocking terminal 104. Preferably, the signal transmission line is connected to the corresponding terminal by crimping, while the cable shielding cover 110 contacts four shielding contact springs 1076, thereby ensuring the shielding performance of the signal transmission line.

[0031] In this embodiment, as Figure 8 As shown, the socket 2 includes a housing 201, and a socket terminal assembly is installed inside the housing 201, such as... Figure 9As shown, the socket terminal assembly includes a socket insulating sleeve 205, within which socket power terminals 206 and socket interlock terminals 207 are installed. The socket interlock terminals 207 are located on one side of the two socket power terminals 206. Preferably, there are two socket power terminals 206, and the socket interlock terminals 207 are located between the two socket power terminals 206. The socket terminal assembly also includes a socket shield 204. In this embodiment, the socket shield 204 includes a cover body, and the rear end of the cover body is further provided with an inwardly protruding shield inner part. The contact spring 2041 and the front end of the seat shield 204 are provided with a shielding spring. The seat shield and the seat insulating sleeve are positioned by an anti-reverse mechanism. Specifically, the front end of the seat shield 204 has a notch, and a cantilever is provided at the notch. The cantilever bends backward to form a shielding spring, which is the outer contact spring 2044. The straight arm of the cantilever has a seat shield locking notch 2043. In this embodiment, the seat shield 204 is first manufactured by stamping, while the cantilever is... It is formed during stamping. After the cantilever is formed, there are receiving notches 2045 on both sides of the cantilever. Then, the front end of the cantilever is bent backward to form a shielding outer contact spring 2044, while the cantilever that is not bent is a straight arm. In this embodiment, the shielding outer contact spring 2044 has a first bent part and a second bent part. The first bent part bends outward, and the second bent part bends inward. The bend of the second bent part is close to or in contact with the straight arm of the cantilever. Furthermore, the bend of the first bent part is high. When the high point is compressed, the outer shielding contact spring 2044 will generate an elastic restoring force, thereby ensuring the reliability of the shielding contact spring 1076 and the contacting component. Furthermore, the inner shielding contact spring 2041 has a third bend that bends outward, and the bend of the third bend is the high point. When the plug 1 and the socket 2 are plugged in, the high point of the third bend can contact the head shield 107, thereby connecting the head shield 107 and the base shield 204, thus ensuring the shielding performance.

[0032] In this embodiment, as Figure 8 and Figure 9As shown, the rear end of the seat insulating sleeve 205 has a seat sleeve retraction notch 2052 for accommodating the inner shield contact spring 2041. A protruding rib 2056 is provided in the middle of the seat insulating sleeve 205, and a spring receiving groove 2057 is formed between two adjacent protruding ribs 2056. A seat sleeve locking protrusion 2054 is provided at the bottom of the spring receiving groove 2057. The outer shield contact spring 2044 is located within the spring receiving groove 2057, and the protruding rib 2056 is located within the receiving notch 2045 of the cover. The high point of the inner shield contact spring 2041 protrudes from the seat sleeve retraction notch 2052, and the high point of the outer shield contact spring 2044 protrudes from the spring receiving groove 2057. When the seat shield 204 and the seat insulating sleeve... After the sleeve 205 is installed, the inner contact spring 2041 is located in the relief notch 1086, while the outer contact spring 2044 is located in the spring receiving groove, the protrusion 2056 is located in the receiving notch 2045, and the seat sleeve locking protrusion 2054 is located in the seat shield locking notch 2043. The seat sleeve locking protrusion 2054 abuts against the seat shield locking notch 2043, thereby preventing the seat shield 204 from axially moving backward relative to the seat insulating sleeve. Moreover, the bend of the cantilever also contacts the front side wall of the spring receiving groove 2057, which also prevents the seat shield 204 from axially moving forward relative to the seat insulating sleeve, thus ensuring the reliability of the mutual installation of the seat shield 204 and the seat insulating sleeve.

[0033] In this embodiment, as Figure 10 , Figure 11 and Figure 12 As shown, a limiting groove is formed in the front inner cavity of the seat housing 201, and an outwardly protruding seat sleeve stop 2055 is provided at the rear end of the protruding ridge 2056. The seat sleeve stop 2055 is fitted into the limiting groove, and the rear end face of the seat sleeve stop 2055 abuts against the rear end face of the limiting groove. When installing the seat terminal assembly, the seat terminal assembly is inserted from front to back. When the rear end face of the seat sleeve stop 2055 abuts against the rear end face of the limiting groove, it indicates that the seat housing 201 and the seat terminal assembly are installed in place. Furthermore, the seat shield 204 and the seat insulating sleeve 205 are positioned by a backstop mechanism, which includes a seat shield notch, The seat cover has a locking protrusion, a seat shield locking spring, and a backstop step. The seat shield locking notch is opened on the straight arm of the cantilever. The bottom of the spring receiving groove is provided with a seat cover locking protrusion. The seat cover locking protrusion is locked in the corresponding seat shield notch. The upper and lower surfaces of the seat shield cover 204 are provided with seat shield locking springs 2042. The seat housing 201 is provided with a backstop step 2013. The shield locking spring abuts against the backstop step 2013. When the seat housing 201 and the seat terminal assembly are installed in place, the shield locking spring abuts against the backstop step 2013, thereby preventing the seat terminal assembly from moving axially relative to the seat housing 201.

[0034] In this embodiment, as Figure 8As shown, the rear end of the seat housing 201 has a mating cavity 2011, and the inner wall of the mating cavity 2011 is provided with a rib 2012. The anti-retraction step 2013 is located between adjacent ribs 2012. The rear end of the seat insulating sleeve 205 has a mating area 2051. The head power terminal 109 and the head interlock terminal 104 enter the mating area 2051 and are mated with the corresponding seat power terminal 206 and seat interlock terminal 207.

[0035] In this embodiment, as Figure 8 As shown, the front end of the seat housing 201 has a connecting plate, an annular sealing groove is provided on the connecting plate, a seat sealing ring 203 is installed in the annular sealing groove, and a connecting hole is provided on the connecting plate, a seat bushing 202 is installed in the connecting hole.

[0036] In this embodiment, as Figure 1 and Figure 8 As shown, a seat cover clearance groove 2053 is provided on the rear end face of the mating area 2051. The seat cover clearance groove 2053 extends forward and is located on one side of the seat cover clearance notch 2052. When the plug 1 and the socket 2 are mated, the seat cover clearance groove 2053 can provide clearance space for the front locking spring 1075, thereby ensuring that the front locking spring 1075 can abut against the pressing groove 1051.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments 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 compact and lightweight connector comprising a plug and a socket, the plug and the socket being mated together, and the plug and the socket being locked by a locking member mounted on the plug, characterized in that: The plug includes a head housing and a head terminal assembly installed within the head housing. The head terminal assembly includes a head insulating sleeve, a head shield, and head power terminals. The head power terminals are installed inside the head insulating sleeve, and the head shield is also fitted onto the head insulating sleeve. A head interlock terminal is also installed inside the head insulating sleeve and is located between the two head power terminals. The socket includes a socket housing and a socket terminal assembly installed inside the socket housing. The socket terminal assembly includes a socket insulating sleeve and a socket shield fitted on the insulating sleeve. A socket power terminal and a socket interlock terminal are installed inside the socket insulating sleeve, and the socket interlock terminal is located on one side of the socket power terminal. The socket shield is provided with an inwardly protruding shield inner contact spring. The rear end of the socket housing has a mating cavity. The inner wall of the mating cavity is provided with a plurality of protruding ribs, and the plurality of protruding ribs are in contact with the outer wall of the socket shield. When the plug and the socket are inserted, the head power terminal and the socket power terminal are inserted, and the socket interlock terminal and the head interlock terminal are inserted.

2. The compact and lightweight connector according to claim 1, characterized in that: The head insulating sleeve is stepped, including a front part and a rear part of the sleeve. The head shield is also stepped, and the head shield is fastened to the head insulating sleeve.

3. A compact and lightweight connector according to claim 2, characterized in that: The head shield includes an upper shield and a lower shield. Front buckles are provided on both the front side walls of the upper and lower shields, and rear buckles are provided on both the rear side walls of the upper and lower shields. Front slots corresponding to the front buckles are provided on the left and right side walls of the front portion of the sheath, and rear slots corresponding to the rear buckles are provided on the left and right side walls of the rear portion of the sheath. The front buckles of the upper and lower shields are engaged in the front slots, and the rear buckles of the upper and lower shields are engaged in the rear slots, thus covering the head insulating sheath.

4. A compact and lightweight connector according to claim 3, characterized in that: The upper shield and the lower shield are provided with forward-bent shielding contact springs at their rear ends, and the rear end face of the sheath is provided with a recessed notch to facilitate the entry of the shielding contact springs.

5. A compact and lightweight connector according to any one of claims 1 to 4, characterized in that: The head housing includes a front portion, a middle portion, and a rear portion. The middle portion extends from rear to front to form a mounting hole, and an annular mounting groove is formed between the outer wall of the middle portion and the inner wall of the front portion. A head sealing ring is fitted onto the middle portion and is located within the annular mounting groove. Locking grooves are provided on the upper and lower side walls of the inner cavity of the rear portion. Rear locking springs corresponding to the locking grooves are provided on the upper and lower side walls of the rear portion of the head shield. The rear end of the rear locking spring is located within the locking groove. Front locking springs are also provided on the upper and lower side walls of the front portion of the head shield. A head end cap is fitted onto the front portion of the head shield. A pressing groove corresponding to the front locking spring is provided on the front side wall of the head end cap. The rear end of the front locking spring abuts against the corresponding pressing groove, and the head end cap presses against the head sealing ring.

6. A compact and lightweight connector according to claim 5, characterized in that: The head insulating sleeve has an interlocking terminal hole, the interlocking terminal hole has a backlash groove, and the head interlocking terminal is provided with a terminal locking protrusion, which is locked in the backlash groove.

7. A compact and lightweight connector according to claim 5, characterized in that: The tail end of the head housing is also equipped with a tail accessory, which includes a cable shielding outer cover, a cable shielding inner ring, a cable sealing ring, and a head and tail cover. The cable shielding inner ring is installed inside the cable shielding outer cover. The cable shielding outer cover is installed in the rear inner cavity of the head insulating terminal and is located behind the head power terminal. The cable shielding outer cover is in contact with the head shielding cover. The cable sealing ring is installed in the rear inner cavity of the housing. The head and tail cover is installed at the rear end of the head housing and presses the cable sealing ring between the terminal assembly and the head and tail cover.

8. A compact and lightweight connector according to claim 5, characterized in that: The front end of the seat shield is provided with a shielding spring, and the seat shield and the seat insulating sleeve are positioned by an anti-reverse mechanism.

9. A compact and lightweight connector according to claim 8, characterized in that: The front end of the seat shield has a notch, and a cantilever is provided at the notch. The cantilever bends backward to form a shielding spring. The middle part of the seat insulating sleeve has a protruding ridge, and a spring receiving groove is formed between two adjacent protruding ridges. The shielding spring is located in the spring receiving groove, and the protruding ridge is located in the receiving notch on one side of the shielding spring. The high point of the seat shield protrudes from the spring receiving groove.

10. A compact and lightweight connector according to claim 9, characterized in that: The anti-reverse mechanism includes a seat shield notch, a seat sleeve locking protrusion, a seat shield locking spring, and an anti-reverse step. The seat shield locking notch is formed on the straight arm of the cantilever. The bottom of the spring receiving groove is provided with a seat sleeve locking protrusion. The seat sleeve locking protrusion is locked in the corresponding seat shield notch. The seat shield locking spring is formed on both the upper and lower surfaces of the seat shield. The anti-reverse step is provided inside the seat housing. The shield locking spring abuts against the anti-reverse step.

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