A modular terminal multi-conductor jack assembly

CN122620189APending Publication Date: 2026-08-21SHENZHEN SHIHAO INTELLIGENT TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202610993345.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-07-06
Publication Date
2026-08-21

AI Technical Summary

Technical Problem

[0004]目前市面上的集成式多芯插座普遍存在装配结构松散、定位精度差的问题,装配过程中易出现端子偏移、孔位错位等情况,装配便捷性与生产效率较低

Benefits of technology

[0016]1. By setting up a receiving cavity, a first locking block, a sleeve block, and a second locking block, the receiving cavity provides a dedicated installation limiting space for the sleeve and the sleeve block, which can accurately limit the installation position of the core and avoid the problem of offset or misalignment when assembling multiple sets of sleeves. The sleeve block nests and covers the outer wall of multiple sleeves, which can form an overall wrapping and fixing structure for the sleeves, preventing the sleeves from loosening, shaking, or offsetting and falling off. At the same time, relying on the snap-fit ​​structure of the first locking block and the second locking block, the sleeve block can be quickly locked and fixed to the receiving cavity of the upper socket. The internal core can be stably assembled without additional fasteners, which greatly simplifies the assembly process, improves assembly efficiency, and can maintain the stability of the core structure for a long time, ensuring the accurate alignment and stable conduction of the 4PIN power terminal conductive path.

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Abstract

The application provides a module terminal multi-core socket assembly, which comprises an upper socket, a lower socket nestedly arranged at the bottom of the upper socket and a plug cover embeddedly arranged at the front of the lower socket. The module terminal multi-core socket assembly is designed by adopting a layered modular assembly design, and comprises a containing cavity, a sleeve block, a sleeve, a plug block, a signal pin cavity, a connecting block, a lower socket, a connecting cavity, a butt joint plate, a butt joint hole, a plug cover and a butt joint column. The sleeve core is stably preassembled by the containing cavity, the sleeve block and the clamping structure. The plug block, the clamping plate and the guide groove are guided and limited, the upper socket and the lower socket are precisely assembled, the plug cover and the lower socket are stably and tightly assembled by the multi-directional locking structure of the butt joint plate, the butt joint hole, the butt joint column and the clamping groove, the independent signal pin cavity and the connecting block clamping assembly structure are used for the modular integrated installation of 8PIN signal pins, and the partition structure of the partition plate is used for effectively isolating the power path and the signal path and avoiding signal interference.
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Description

Technical Field

[0001] This invention relates to the field of connector technology, and more specifically, to a modular terminal multi-core socket assembly. Background Technology

[0002] Multi-core socket assemblies are widely used in electrical connection and signal transmission equipment. Most existing socket structures are simple in design, with a single power terminal or a single signal terminal arranged independently, making it difficult to simultaneously meet the needs of high-power power supply and synchronous transmission of multiple signals.

[0003] However, existing connectors have the following problems when in use:

[0004] Currently available integrated multi-core sockets generally suffer from loose assembly structures and poor positioning accuracy. During assembly, issues such as terminal misalignment and hole misalignment easily occur, resulting in low assembly convenience and production efficiency. Furthermore, traditional sockets lack partition isolation structures, leading to interference between power conduction paths and signal transmission paths, which can easily cause unstable signal transmission and large transmission errors. In addition, the existing sockets have simple shell mating and end cover fixing structures, relying mostly on simple plug-in connections. Over long-term use, these are susceptible to loosening and detachment due to vibration and pulling, leading to poor contact, open circuits, and other malfunctions. Overall structural stability and reliability are poor, making them unsuitable for the current high-precision, high-stability requirements of multi-core integrated electrical connections.

[0005] This invention adopts a modular layered structure, integrating power and signal terminals, with precise and secure assembly, effectively isolating signal interference and stably realizing high-power conduction and multi-channel signal transmission. Summary of the Invention

[0006] The present invention aims to solve the technical problems mentioned in the background art and provide a modular terminal multi-core socket assembly.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a modular terminal multi-core socket assembly, comprising: an upper socket, a lower socket nested at the bottom of the upper socket, a plug cover embedded in the front of the lower socket, a sleeve block embedded in the upper part of the upper socket, a plug block fixedly installed at the bottom of the upper socket, a connecting cavity opened at the upper end of the lower socket, the plug block embedded in the connecting cavity, the bottom front of the lower socket being open and a first docking plate fixedly installed thereon, each of the first docking plates having a docking hole below it, a second docking plate fixedly installed at the rear end of the plug cover, a docking post fixedly installed on the second docking plate, the first docking plate and the second docking plate being snapped together, and the docking post being embedded in the docking hole.

[0008] A further preferred embodiment: the upper socket has a receiving cavity at its upper end, and a first locking block is fixedly installed at both the front and rear ends of the receiving cavity. A second locking block is fixedly installed at both the front and rear ends of the sleeve block. The sleeve block is embedded in the receiving cavity, and the second locking block is engaged with the first locking block.

[0009] A further preferred embodiment: the upper end of the sleeve block has a sleeve hole, the accommodating cavity has a sleeve embedded in it, the sleeve block is nested on the surface of the sleeve, and the left and right ends of the insertion block are fixedly installed with clamping plates, which are matched with the connecting cavity.

[0010] A further preferred embodiment: guide grooves are provided at both the left and right ends of the connecting cavity, and the guide grooves are matched with the card plate; a through hole is provided at the bottom of the connecting cavity, and the through hole is matched with the plug cover; and card slots are provided at both the left and right ends of the bottom of the lower socket, and the card slots are matched with the plug cover.

[0011] A further preferred embodiment: The front of the plug cover has a plug hole 1, and a terminal 1 is embedded in the plug hole 1. The terminal 1 is L-shaped and its upper end passes through the through hole and is embedded in the connecting cavity. The left and right ends of the plug cover are fixedly installed with a card block 4, which is matched with the card slot. The docking plate 2 is respectively disposed between the terminals 1.

[0012] A further preferred embodiment: The upper socket is further provided with a signal needle cavity, the bottom of the signal needle cavity is provided with a connection hole 1, one end of the signal needle cavity is provided with an auxiliary groove, the front and rear ends of the signal needle cavity are fixedly installed with locking strips, a connecting block is embedded in the signal needle cavity, the front and rear ends of the connecting block are fixedly installed with locking blocks 3, the locking blocks 3 are engaged with the locking strips, and a number of signal needles are embedded in the connecting block, the signal needles are embedded in the connection hole 1 and the bottom of the connection hole 1 is set through the connection hole 1.

[0013] A further preferred embodiment: a partition is fixedly installed on one side of the connecting cavity inside the lower socket, and several connecting holes are opened on one side of the bottom of the connecting cavity, and the connecting holes are matched with the plug cover.

[0014] A further preferred embodiment: A second insertion hole is provided on one side of the front of the insertion cover, and a second terminal is embedded in the second insertion hole. The second terminal is L-shaped and its upper end is embedded in the second connection hole.

[0015] Beneficial effects:

[0016] 1. By setting up a receiving cavity, a first locking block, a sleeve block, and a second locking block, the receiving cavity provides a dedicated installation limiting space for the sleeve and the sleeve block, which can accurately limit the installation position of the core and avoid the problem of offset or misalignment when assembling multiple sets of sleeves. The sleeve block nests and covers the outer wall of multiple sleeves, which can form an overall wrapping and fixing structure for the sleeves, preventing the sleeves from loosening, shaking, or offsetting and falling off. At the same time, relying on the snap-fit ​​structure of the first locking block and the second locking block, the sleeve block can be quickly locked and fixed to the receiving cavity of the upper socket. The internal core can be stably assembled without additional fasteners, which greatly simplifies the assembly process, improves assembly efficiency, and can maintain the stability of the core structure for a long time, ensuring the accurate alignment and stable conduction of the 4PIN power terminal conductive path.

[0017] 2. By incorporating insert blocks, locking plates, and guide grooves, precise guidance and limiting measures are provided for the mating assembly of the upper and lower sockets. The insert block at the bottom of the upper socket fits and nests with the connecting cavity of the lower socket, achieving basic positioning and fit between the upper and lower shells. The locking plates on both sides of the insert block precisely match the guide grooves inside the connecting cavity. During assembly, sliding alignment can be achieved through the guide structure, effectively avoiding shell misalignment and hole misalignment caused by manual assembly deviations. This guide and limiting structure ensures that the upper socket is smoothly and vertically inserted into the lower socket, allowing the sleeve, terminal, and through hole to be precisely aligned, avoiding damage to the conductive structure during assembly. At the same time, it can improve the fit of the upper and lower shells, limit the left and right and front and back displacement of the shells, enhance the overall integrity and stability of the shell structure, and provide a precise structural foundation for subsequent terminal conduction assembly.

[0018] 3. By setting up a slot, docking plate one, docking hole, docking plate two, docking post and locking block four, during the assembly of the plug cover, the locking blocks four on both sides engage with the slot at the bottom of the lower socket to lock the vertical position and prevent the plug cover from loosening and falling off. At the same time, docking plate one and docking plate two clamp each other, and together with the precise limiting method of the docking post embedding into the docking hole, a horizontal positioning structure is formed to effectively limit the horizontal displacement of the plug cover and avoid terminal misalignment. The bidirectional multi-snap locking structure works together to achieve quick disassembly and assembly and stable fixation of the plug cover without the need for screws, glue or other auxiliary fixing methods. It can not only ensure the alignment and conduction accuracy of 4PIN power terminals and 8PIN signal terminals, but also improve the product's shock resistance and anti-shaking ability and extend the service life of the components.

[0019] 4. By incorporating a signal pin cavity, auxiliary slot, locking strip, connecting block, and locking block three, the modular integrated assembly and stable fixation of the 8-pin signal pins are achieved. The independent signal pin cavity separates the signal pin assembly from the power terminal area. Combined with the partitioning function of the lower socket partition, it can effectively avoid mutual interference between power signals and control signals, improving the stability and accuracy of equipment signal transmission. The auxiliary slot provides fault tolerance space for assembly operations, reducing the difficulty of signal pin alignment and assembly. The connecting block integrates and fixes multiple signal pins, realizing the overall modular pre-assembly of the signal pins and improving assembly efficiency. Relying on the snap-fit ​​cooperation of the locking strip and locking block three, the signal pin assembly can be quickly locked in the signal pin cavity to prevent the signal pins from loosening or shifting during use, ensuring that each signal pin is precisely attached and conductive to the corresponding terminal two, realizing stable transmission of multiple signals, and adapting to composite connection scenarios with multiple signals and high power.

[0020] 5. In summary, this modular terminal multi-core socket assembly, through the inclusion of an upper socket, receiving cavity, sleeve block, sleeve, insertion block, signal pin cavity, connecting block, lower socket, connecting cavity, mating plate, mating hole, insertion cover, and mating post, adopts a layered modular assembly design. The receiving cavity, in conjunction with the sleeve block and snap-fit ​​structure, ensures the stable pre-assembly of the sleeve core. The insertion block, snap-fit ​​plate, and guide groove's guiding and limiting structure enable precise alignment and assembly of the upper and lower sockets, effectively avoiding assembly misalignment and structural loosening, significantly improving assembly accuracy and efficiency. Furthermore, the mating plate, mating hole, mating post, and snap-fit... The slot's multiple bidirectional locking structure ensures a secure fit between the cover and the lower socket, guaranteeing overall structural stability and resistance to shaking and vibration. Independent signal pin cavities, combined with a connecting block snap-fit ​​assembly structure, enable modular integrated installation of 8-pin signal pins. The partition structure effectively isolates power and signal paths, preventing signal interference. This component features a rational structural layout, convenient and secure assembly, and balances 4-pin power conduction with 8-pin signal transmission, effectively improving the overall stability, practicality, and adaptability of the socket assembly. It is suitable for various high-power, multi-signal transmission connection scenarios. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the overall exploded structure of the present invention.

[0023] Figure 3 This is a schematic diagram of the lower base structure of the present invention.

[0024] Figure 4 This is a schematic diagram of the rear end of the plug-in structure of the present invention.

[0025] Figure 5 This is a schematic diagram of the overall eight-core structure of the present invention.

[0026] Figure 6 This is a schematic diagram showing the overall structure of the present invention in eight-core state decomposition.

[0027] Figure 1-6 Middle: 1. Upper socket; 101. Receiving cavity; 102. Locking block one; 103. Sleeve block; 104. Locking block two; 105. Sleeve hole; 106. Sleeve tube; 107. Insert block; 108. Locking plate; 109. Signal pin cavity; 110. Connecting hole one; 111. Auxiliary groove; 112. Locking strip; 113. Connecting block; 114. Locking block three; 115. Signal pin; 2. Lower socket; 201. Connecting cavity; 202. Guide groove; 203. Through hole; 204. Butt plate one; 205. Butt hole; 206. Locking groove; 207. Partition plate; 208. Connecting hole two; 3. Insert cover; 301. Insert hole one; 302. Locking block four; 303. Terminal one; 304. Butt plate two; 305. Butt post; 306. Insert hole two; 307. Terminal two. Detailed Implementation

[0028] The following will refer to the appendices in the embodiments of the present invention. Figures 1-6 The technical solutions in the embodiments of the present invention will be clearly and completely described.

[0029] Please see Figure 1-6In this embodiment of the invention, a multi-core socket assembly for modular terminals includes: an upper socket 1, a lower socket 2 nested at the bottom of the upper socket 1, and a plug cover 3 embedded in the front of the lower socket 2. The upper socket 1 is characterized by having a sleeve block 103 embedded in its upper interior, a plug block 107 fixedly installed at its bottom, a connecting cavity 201 at the upper end of the lower socket 2, the plug block 107 embedded within the connecting cavity 201, an open bottom front of the lower socket 2, and a first mating plate 204 fixedly installed thereon. Each of the first mating plates 204 has mating holes 205 below it. A second mating plate 304 is fixedly installed at the rear end of the plug cover 3, and a mating plate 304 is fixedly installed on the second mating plate 304. The connecting post 305 is connected to the connecting plate 204 and the connecting plate 304. The connecting post 305 is embedded in the connecting hole 205. The upper socket 1 has a receiving cavity 101 at its upper end. The receiving cavity 101 has a locking block 102 fixedly installed at both the front and rear ends. The sleeve block 103 has a locking block 104 fixedly installed at both the front and rear ends. The sleeve block 103 is embedded in the receiving cavity 101, and the locking block 104 is engaged with the locking block 102. The upper end of the sleeve block 103 has a sleeve hole 105. The receiving cavity 101 has a sleeve 106 embedded in it. The sleeve block 103 is nested on the surface of the sleeve 106. The insert block 107 has locking plates 108 fixedly installed at both ends. Matching the connecting cavity 201, guide grooves 202 are provided at both ends of the connecting cavity 201. The guide grooves 202 are matched with the card plate 108. A through hole 203 is provided at the bottom of the connecting cavity 201. The through hole 203 is matched with the plug cover 3. A slot 206 is provided at both ends of the bottom of the lower socket 2. The slot 206 is matched with the plug cover 3. A first plug hole 301 is provided on the front of the plug cover 3. A first terminal 303 is embedded in the first plug hole 301. The first terminal 303 is L-shaped and its upper end passes through the through hole 203 and is embedded in the connecting cavity 201. A fourth card block 302 is fixedly installed at both ends of the plug cover 3. The fourth card block 302 is matched with the slot 202. 6. Matching setup: The second docking plate 304 is respectively set between the first terminal 303. According to the number of terminals, take the corresponding independent sleeve 106, align it with the top of the plug 107 in the receiving cavity 101, and then insert it. The lower end of the sleeve 106 naturally extends downward from the bottom of the upper socket 1 into the plug 107. After insertion, press down vertically on the four sleeve holes 105 on the top of the sleeve 103 so that the sleeve 103 is nested and covered by the outer wall of the four sleeves 106. When the sleeve 103 is pressed down, the multiple sets of locking blocks 102 integrally formed on the front and rear inner walls of the receiving cavity 101 on the upper socket 1 and the locking blocks 104 on the front and rear sides of the sleeve 103 interlock and lock each other, completing the pre-assembly of the internal core of the upper socket.Remove the lower socket 2. The top of the lower socket 2 has a connecting cavity 201 that connects to the interior. The inner walls of the connecting cavity 201 are provided with guide grooves 202 for guiding. The bottom of the cavity has four corresponding through holes 203. The bottom of the lower socket 2 has pre-reserved slots 206 on both sides. The inner wall of the bottom cavity of the lower socket 2 is fixed with a docking plate 204 with docking holes 205. Hold the pre-assembled upper socket 1 and align it with the connecting cavity 201 at the top of the lower socket 2. Align the locking plates 108 on both sides of the bottom plug 107 of the upper socket with the guide grooves 202. Push the upper socket 1 vertically downward along the guide grooves 202. The locking plates 108 slide and limit the movement along the guide grooves 202. The plug 107 is completely embedded in the connecting cavity 201, completing the nesting and positioning of the upper and lower sockets. At this time, the lower end of the sleeve 106 is aligned with the through hole 203 at the bottom of the connecting cavity 201. The upper and lower sockets are temporarily combined into a housing assembly. Then, take four terminals 303. Terminals 303 are L-shaped with their long sides extending upwards. They are inserted into the insert block 107 through the through hole 203 and then embedded into the sleeve 106. The upper end of terminal 303 is in conductive contact with the inside of the sleeve 106. Next, take the base of the insert cover 3. The front of the insert cover has four insertion holes 301. The rear end of the insert cover is integrally formed with multiple mating plates 304. Each mating plate 304 has a fixed mating post 305. The left and right ends of the insert cover have four locking blocks 302. Align the insertion holes 303 on the front of the insert cover 3 with the short side of terminal 303. Move the insert cover 3 backward so that the insert cover 3 is nested on the surface of terminal 303, so that the short side of the terminal is exposed on the front of the insert cover. Terminal 303 is separated between each set of mating plates 304. The components are arranged in parallel and equidistant. When installing the plug cover 3, the four locking blocks 302 on both sides of the plug cover align with the left and right locking slots 206 at the bottom of the lower socket. The docking posts 305 on the docking plate 204 at the rear end of the plug cover 3 are embedded one by one into the docking holes 205 of the docking plate 1 204 inside the lower socket. The docking plate 1 204 and the docking plate 2 304 clamp each other. The number of docking plates 1 204 and docking plate 2 304 is set in a relative manner, that is, two docking plates 1 204 correspond to one docking plate 2 304 or two docking plates 2 304 correspond to one docking plate 1 204, which are mutually clamped and docked to achieve the locking and limiting of docking plates 1 and 2. After that, the four locking blocks 302 on both sides of the plug cover are fully inserted into the locking slots 206, and the plug cover is locked and fixed to the bottom of the lower socket, completing the assembly of the 4-pin socket assembly.

[0030] In this embodiment of the invention, the upper socket 1 is further provided with a signal needle cavity 109. A connection hole 110 is provided at the bottom of the signal needle cavity 109. An auxiliary groove 111 is provided at one end of the signal needle cavity 109. Locking strips 112 are fixedly installed at both the front and rear ends of the signal needle cavity 109. A connecting block 113 is embedded in the signal needle cavity 109. Locking blocks 114 are fixedly installed at both the front and rear ends of the connecting block 113, engaging with the locking strips 112. Several signal needles 115 are embedded in the connecting block 113. The signal needles 115 are embedded in the connection hole 110 and their bottoms pass through the connection hole 110. A partition 207 is fixedly installed on one side of the connecting cavity 201 inside the lower socket 2. Several connection holes 208 are provided on one side of the bottom inside. The connection holes 208 are matched with the plug cover 3. The plug cover 3 has a plug hole 306 on one side of the front. A terminal 307 is embedded in the plug hole 306. The terminal 307 is L-shaped and its upper end is embedded in the connection hole 208. Depending on the application, when selecting the socket assembly with 8-pin signal pins and 4-pin terminal 303, an 8-pin signal pin is added on the basis of the original 4-pin terminal. Take the connecting block 113 and vertically embed the 8 signal pins 115 into the preset installation position of the connecting block 113 to complete the pre-assembled assembly of the signal pins and the connecting block. The 8 signal pins are simultaneously fixed on the connecting block, with the upper and lower ends of the pin body extending outward respectively. Hold the pre-installed connector block 113 and vertically insert it into the signal pin cavity 109 at the end of the upper socket 1. The locking blocks 114 on both sides of the connector block 113 and the locking strips 112 on the inner wall of the signal pin cavity 109 are then interlocked and locked. At this point, the lower ends of the eight signal pins 115 are precisely aligned with the first connection hole 110 at the bottom of the signal pin cavity 109, and pass downwards through the first connection hole 110 to the outside of the bottom of the upper socket 1, completing the pre-installation and fixing of the signal pins on the upper socket side. Attach the upper socket 1 with the pre-installed signal pins and terminal 303 along the guide groove to the upper socket 2, with the bottom of the upper socket extending into the connection cavity 201 of the lower socket 2. A partition 207 is provided on one side of the connection cavity 201 to separate the power terminal area from the signal area. After the eight signal pins pass through the first connection hole 110, they are aligned with the second connection hole 208 opened on one side of the bottom of the connection cavity 201, with the lower ends of the pins extending above the second connection hole 208, completing the alignment of the signal path between the upper and lower housings. Then take eight L-shaped terminals 307, with their vertical long sides extending upwards. The vertical long sides of the eight L-shaped terminals 307 pass through the corresponding connection holes 208 at the bottom of the connection cavity 201, and make contact with the lower ends of the eight signal pins 115 that pass through the connection hole 110 above. The eight terminals 307 are embedded inside the bottom of the signal pins 115 to form a connection. Then insert four terminals 303 to form a connection with the sleeve 106. Then take the plug cover 3, put it on the surface of the terminals 307 and press it back. Push it into the open mounting position at the bottom of the lower socket 2 and lock it in place. The short side of the terminals 307 is exposed on the front of the plug cover.

Claims

1. A modular terminal multi-core socket assembly, comprising: An upper socket (1) is provided, with a lower socket (2) nested at the bottom of the upper socket (1) and a plug cover (3) embedded on the front of the lower socket (2). The upper socket (1) is characterized by having a sleeve block (103) embedded in the upper part of the upper socket (1), a plug block (107) fixedly installed at the bottom of the upper socket (1), a connecting cavity (201) opened at the upper end of the lower socket (2), the plug block (107) being embedded in the connecting cavity (201), the lower socket (2) being open at the bottom of the front and having a first docking plate (204) fixedly installed, and docking holes (205) being opened below the first docking plate (204). A second docking plate (304) is fixedly installed at the rear end of the plug cover (3), and a docking post (305) is fixedly installed on the second docking plate (304). The first docking plate (204) and the second docking plate (304) are snapped together, and the docking post (305) is embedded in the docking hole (205).

2. The modular terminal multi-core socket assembly according to claim 1, characterized in that: The upper socket (1) has a receiving cavity (101) at its upper end. The receiving cavity (101) has a locking block one (102) fixedly installed at both the front and rear ends. The sleeve block (103) has a locking block two (104) fixedly installed at both the front and rear ends. The sleeve block (103) is embedded in the receiving cavity (101), and the locking block two (104) is engaged with the locking block one (102).

3. A modular terminal multi-core socket assembly according to claim 2, characterized in that: The upper end of the sleeve block (103) is provided with a sleeve hole (105), and a sleeve (106) is embedded in the accommodating cavity (101). The sleeve block (103) is nested on the surface of the sleeve (106). The left and right ends of the insert block (107) are fixedly installed with a clamping plate (108), and the clamping plate (108) is matched with the connecting cavity (201).

4. A modular terminal multi-core socket assembly according to claim 3, characterized in that: The connecting cavity (201) has guide grooves (202) at both ends. The guide grooves (202) are matched with the card plate (108). The connecting cavity (201) has a through hole (203) at the bottom. The through hole (203) is matched with the plug cover (3). The lower socket (2) has slots (206) at both ends at the bottom. The slots (206) are matched with the plug cover (3).

5. A modular terminal multi-core socket assembly according to claim 4, characterized in that: The plug cover (3) has a plug hole (301) on the front. A terminal (303) is embedded in the plug hole (301). The terminal (303) is L-shaped and its upper end passes through the through hole (203) and is embedded in the connecting cavity (201). The plug cover (3) has a card block (302) fixedly installed on both the left and right ends. The card block (302) is matched with the card slot (206). The docking plate (304) is respectively arranged between the terminal (303).

6. A modular terminal multi-core socket assembly according to claim 1, characterized in that: The upper socket (1) is also provided with a signal needle cavity (109). A connection hole (110) is provided at the bottom of the signal needle cavity (109). An auxiliary groove (111) is provided at one end of the signal needle cavity (109). A retaining strip (112) is fixedly installed at both the front and rear ends of the signal needle cavity (109). A connecting block (113) is embedded in the signal needle cavity (109). A retaining block (114) is fixedly installed at both the front and rear ends of the connecting block (113). The retaining block (114) is engaged with the retaining strip (112). Several signal needles (115) are embedded in the connecting block (113). The signal needles (115) are embedded in the connection hole (110) and their bottoms pass through the connection hole (110).

7. A modular terminal multi-core socket assembly according to claim 6, characterized in that: A partition (207) is fixedly installed on one side of the connecting cavity (201) inside the lower socket (2). Several connecting holes (208) are opened on one side of the bottom of the connecting cavity (201). The connecting holes (208) are matched with the plug cover (3).

8. A modular terminal multi-core socket assembly according to claim 7, characterized in that: The plug cover (3) has a second plug hole (306) on one side of the front. A second terminal (307) is embedded in the second plug hole (306). The second terminal (307) is L-shaped and its upper end is embedded in the second connection hole (208).