A large-current connector with locking structure

Abstract

This utility model provides a high-current connector with a locking structure. Through the locking structure, when the plug and socket are inserted, the insertion terminal is inserted downwards into the first annular slot along the longitudinal groove of the first inverted L-shaped slot. This allows the first insertion interface to be sleeved on the outside of the inner terminal, and the outer terminal to be inserted into the second annular slot, until the second locking block abuts against the bottom of the transverse groove of the second inverted L-shaped slot. Then, the plug is rotated clockwise, causing the first locking block to enter and be locked in the transverse groove of the first inverted L-shaped slot, achieving a locking engagement between the first locking block and the first inverted L-shaped slot. Finally, the second locking block is moved downwards and locked in the longitudinal groove of the second inverted L-shaped slot, achieving a locking engagement between the second locking block and the second inverted L-shaped slot. This double locking design achieves plug and socket connection locking, preventing displacement and loosening during insertion.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically a high-current connector with a locking structure. Background Technology

[0002] High-current connectors are electronic components used to transmit high-intensity currents. They typically consist of male and female connectors, which work together to ensure reliable circuit continuity. High-current connectors feature high conductivity, low contact resistance, and excellent heat resistance, and are primarily used in industrial equipment, new energy vehicles, energy storage systems, and aerospace. For example, in new energy vehicles, high-voltage, high-current connectors are crucial components in the vehicle's high-voltage architecture, handling energy transfer between the battery, motor, and electronic control system.

[0003] Some existing high-current connectors, when plugged in, simply insert the male connector into the female connector's cavity, without providing an effective locking mechanism between them. This makes the male and female connectors prone to displacement and loosening under vibration or impact, reducing the contact area, increasing resistance, and leading to poor contact and abnormal temperature rise. Furthermore, the high-energy electric arc generated at the moment of loosening may vaporize the metal contacts and ignite surrounding materials, directly threatening the safety of operators.

[0004] Therefore, in order to improve the safety and stability of high-current connectors and extend their service life, it is necessary to provide a high-current connector with a locking structure. Utility Model Content

[0005] To address the technical problem that the lack of a locking mechanism between the male and female plugs in existing high-current connectors leads to easy displacement and loosening of the male and female plugs, causing safety hazards, this utility model provides a high-current connector with a locking structure.

[0006] A high-current connector with a locking structure includes a socket and a plug, and further includes a locking structure. The locking structure includes a first locking block and a first inverted L-shaped slot matching the first locking block, a second locking block and a second inverted L-shaped slot matching the second locking block; both the first and second inverted L-shaped slots include a transverse slot and a longitudinal slot communicating with the transverse slot; the socket includes a socket body, a cylindrical outer terminal, and an inner terminal. The socket body has an opening at one end and extends to the opposite end to form a receiving cavity. The outer terminal is disposed within the receiving cavity, and the inner terminal is disposed inside the outer terminal, with a first annular slot formed between the inner and outer terminals; two opposing first locking blocks are respectively provided at both ends of the inner surface of the outer terminal; two centrally symmetrical second inverted L-shaped slots are respectively recessed at both ends of the outer surface of the outer terminal, with the slot openings of the second inverted L-shaped slots located at the outer ends of the openings of the outer terminal, and the second inverted L-shaped slots corresponding one-to-one with the first locking blocks; the plug... The head includes a plug body and a plug terminal connected to one end of the plug body. A plug sleeve is sleeved on the outside of the plug terminal, and the plug terminal extends beyond the plug sleeve. One end of the plug sleeve is connected to the plug body, and the inner side of the other end forms a second annular slot with the outer periphery of the plug terminal. The two ends of the outer surface of the plug terminal are respectively recessed inward to form two centrally symmetrical first inverted L-shaped slots, and the opening of the first inverted L-shaped slot is located at the end of the outer surface of the plug terminal. The plug sleeve is provided with two opposing second locking blocks at the two ends near the inner surface of the plug terminal, and the first inverted L-shaped slots correspond one-to-one with the second locking blocks. A first plug interface matching the inner terminal is opened at the center of the plug terminal. The plug terminal is inserted into the first annular slot, so that the first plug interface is sleeved on the outside of the inner terminal and the outer terminal is inserted into the second annular slot, thereby limiting and locking the first locking block in the transverse slot of the first inverted L-shaped slot, and locking the second locking block in the longitudinal slot of the second inverted L-shaped slot for locking.

[0007] Furthermore, an annular groove is provided outside the plug-in terminal. The annular groove is located above the transverse groove of the first inverted L-shaped slot, and an annular sealing gasket is fixedly installed inside the annular groove.

[0008] Furthermore, the inner terminal has a second insertion interface at its center, and the inner periphery of the second insertion interface has a plurality of limiting strips along its circumferential direction; the first insertion interface has a conductive terminal at its center, and the conductive terminal is used to be inserted into the second insertion interface and is limited between the limiting strips.

[0009] Furthermore, a square mounting plate is provided on the outer side of one opening end of the socket body. One end of the mounting plate is rotatably connected to a connector cover via a pivot, and the other end of the mounting plate is detachably connected to the other end of the connector cover.

[0010] Furthermore, the connector cover is provided with a hook and a first locking hole at the end away from the rotating shaft, and the mounting plate is provided with a slot and a second locking hole that cooperate with the hook and the first locking hole.

[0011] Furthermore, a mounting hole is provided around each of the four sides of the mounting plate.

[0012] Furthermore, the outer wall of the socket body is arranged in a ring shape with several heat dissipation substrates.

[0013] Furthermore, a through hole is provided through the middle of the side of the socket body, and a micro switch is connected to the through hole.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a high-current connector with a locking structure. Through the locking structure, when the plug and socket are inserted, the insertion terminal first inserts downwards into the first annular slot along the longitudinal groove of the first inverted L-shaped slot, so that the first insertion interface is sleeved on the outside of the inner terminal and the outer terminal is inserted into the second annular slot, until the second locking block abuts against the bottom of the transverse groove of the second inverted L-shaped slot. Then, the plug is rotated clockwise, causing the first locking block to enter and be locked in the transverse groove of the first inverted L-shaped slot, achieving a locking engagement between the first locking block and the first inverted L-shaped slot. Finally, the second locking block is moved downwards and locked in the longitudinal groove of the second inverted L-shaped slot, achieving a locking engagement between the second locking block and the second inverted L-shaped slot. This double locking design achieves plug and socket insertion locking, effectively avoiding safety hazards caused by easy displacement and loosening during plug and socket insertion, thereby improving the safety and stability of the high-current connector and extending its service life. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a high-current connector with a locking structure provided by this utility model; Figure 2 A three-dimensional structural diagram of the socket provided by this utility model; Figure 3 A schematic diagram of the overall structure of the socket provided by this utility model; Figure 4 A schematic diagram of the duplex structure of the socket provided by this utility model; Figure 5 A partial structural schematic diagram of the mounting plate and socket body provided by this utility model.

[0016] Figure 6 A schematic diagram of the front structure of the plug provided by this utility model; Figure 7 A three-dimensional structural diagram of the plug provided by this utility model; Figure 8 A schematic diagram of the plug structure from below provided by this utility model; Figure 9 A simplified schematic diagram of the snapping and moving process of the first card block and the first inverted L-shaped card slot provided by this utility model; Figure 10 A simplified schematic diagram illustrating the snapping and moving process of the second card block and the second inverted L-shaped card slot provided by this utility model.

[0017] Attached Figure Labels

[0018] 1. Socket; 101. Socket body; 102. External terminal; 103. Internal terminal; 1031. Second plug interface; 1032. Limiting strip; 104. Receiving cavity; 105. First annular slot; 2. Plug; 201. Plug body; 202. Plug terminal; 2021. First plug interface; 203. Plug sleeve; 204. Second annular slot; 205. Annular sealing gasket; 3. First locking block; 4. First inverted L-shaped slot; 41, 61. Horizontal slot; 42, 62. Vertical slot; 5. Second locking block; 6. Second inverted L-shaped slot; 7. Mounting plate; 71. Slot; 72. Second locking hole; 73. Mounting hole; 8. Connector cover; 81. Hook; 82. First locking hole; 9. Heat dissipation base plate; 10. Through hole. Detailed Implementation

[0019] The embodiments described below are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] refer to Figure 1 , Figure 3 and Figure 7 As shown, a high-current connector with a locking structure includes a socket 1 and a plug 2, and also includes a locking structure, the locking structure including a first locking block 3 and a first inverted L-shaped locking groove 4 that matches the first locking block 3, a second locking block 5 and a second inverted L-shaped locking groove 6 that matches the second locking block 5.

[0021] Specifically, refer to Figure 3 , Figure 4 as well as Figure 5As shown, the socket 1 includes a socket body 101, a cylindrical outer terminal 102, and an inner terminal 103. The socket body 101 has an opening at one end and extends to the opposite end to form a receiving cavity 104. The outer terminal 102 is disposed in the receiving cavity 104, and the inner terminal 103 is disposed inside the outer terminal 102. A first annular slot 105 is formed between the inner terminal 103 and the outer terminal 102.

[0022] The outer terminal 102 has two opposing first locking blocks 3 on its inner surface at both ends; the outer surface of the outer terminal 102 is recessed inward at both ends to form two centrally symmetrical second inverted L-shaped slots 5, the slot opening of the second inverted L-shaped slot 6 is located at the outer end of the opening of the outer terminal 102, and the second inverted L-shaped slot 6 corresponds one-to-one with the first locking block 3.

[0023] refer to Figure 6 , Figure 7 as well as Figure 8 As shown, the plug 2 includes a plug body 201 and a plug terminal 202 connected to one end of the plug body 201. A plug sleeve 203 is sleeved on the outside of the plug terminal 202, and the plug terminal 202 extends to the outside of the plug sleeve 203. One end of the plug sleeve 203 is connected to the plug body 201, and the inner side of the other end forms a second annular slot 204 between it and the outer periphery of the plug terminal 202.

[0024] The outer surface of the plug-in terminal 202 is recessed at both ends to form two centrally symmetrical first inverted L-shaped slots 4, and the slot opening of the first inverted L-shaped slot 4 is located at the end of the outer surface of the plug-in terminal 202; the plug-in sleeve 203 is provided with two opposing second locking blocks 5 at both ends near the inner surface of the plug-in terminal 202, and the first inverted L-shaped slot 4 and the second locking block 5 correspond one-to-one.

[0025] The first inverted L-shaped slot 4 includes a horizontal slot 41 and a vertical slot 42 communicating with the horizontal slot 41; the second inverted L-shaped slot 6 each includes a horizontal slot 61 and a vertical slot 62 communicating with the horizontal slot 61. Therefore, the opening of the first inverted L-shaped slot 4 is the opening of the horizontal slot 41 at the outer end of the outer terminal opening. The opening of the second inverted L-shaped slot 6 is the opening of the vertical slot 62 at the outer end of the outer surface of the plug-in terminal 202.

[0026] In this embodiment, the height of the first card block 3 is less than the height of the horizontal card slot 61 of the second inverted L-shaped card slot 5.

[0027] The plug terminal 202 has a first plug interface 2021 at its center that matches the inner terminal 103; the plug terminal 202 is inserted into the first annular slot 105, so that the first plug interface 2021 is sleeved on the outside of the inner terminal 103 and the outer terminal 102 is inserted into the second annular slot 203, thereby limiting and locking the first locking block 3 in the transverse slot 41 of the first inverted L-shaped slot 4, and locking the second locking block 5 in the longitudinal slot 62 of the second inverted L-shaped slot 6 for locking.

[0028] Reference Figure 9 and Figure 10 As shown, in this embodiment, the insertion and locking process of the plug 2 and the socket 1 is specifically as follows: First, place the plug terminal 202 of the plug 2 above the outer terminal 102, so that the slots of the longitudinal slots 42 of the first inverted L-shaped slots 4 at both ends of the outer surface of the plug terminal 202 correspond one-to-one with the first locking blocks 3 at both ends of the inner surface of the outer terminal 102; at this time, the slots of the transverse slots 61 of the two second inverted L-shaped slots 6 at both ends of the outer surface of the outer terminal 102 also correspond to the two second locking blocks 5 at both ends of the inner surface of the plug sleeve 203.

[0029] Next, insert the plug terminal 202 of the plug 2 into the longitudinal slot 42 of the first inverted L-shaped slot 4, and then insert it downward into the first annular slot 105. At the same time, the first plug interface 2021 is sleeved on the outside of the inner terminal 103, and the outer terminal 102 is inserted into the second annular slot 203 and continues to be inserted until the second locking block 4 abuts against the bottom of the transverse slot 61 of the second inverted L-shaped slot 6. At this time, rotate the plug 2 clockwise so that the first locking block 3 enters the transverse slot 41 of the first inverted L-shaped slot 4 and moves laterally along the transverse slot 41 until it abuts against the side wall of the transverse slot 41. At this time, the first locking block 3 is limited vertically by the transverse slot 41, so that it is locked in the transverse slot 41. At the same time, the second locking block 4 moves along the transverse slot 61 of the second inverted L-shaped slot 6 to the top of its longitudinal slot 62.

[0030] Finally, the plug 2 is inserted further downwards, so that the first locking block 3 abuts against the upper end of the horizontal locking groove 41 of the first inverted L-shaped locking groove 4. At this time, the first locking block 3 is still limited and locked in its horizontal locking groove 41. At the same time, the second locking block 4 moves downwards into the vertical locking groove 62 of the second inverted L-shaped locking groove 6 until it abuts against the bottom of the vertical locking groove 62. At this time, the second locking block 4 is limited left and right by the vertical locking groove 62 of the second inverted L-shaped locking groove 6, so that it is limited and locked in the vertical locking groove 62, thereby realizing the insertion and locking of the plug 2 and the socket 1.

[0031] The double-limit locking design locks the plug 2 and socket 1 together, preventing displacement or loosening of the plug 2 and socket 1 during the insertion process. This avoids safety hazards caused by displacement or loosening during insertion, thereby improving the safety and stability of the high-current connector and extending its service life.

[0032] The plug-in terminal 202 is also provided with an annular groove, which is located above the transverse groove 41 of the first inverted L-shaped groove 4, and an annular sealing gasket 205 is fixedly installed in the annular groove.

[0033] When the plug terminal 202 of the plug 2 is inserted into the first annular slot 105, and the outer terminal 102 is inserted into the second annular slot 203, and the slot and the locking block are correspondingly locked, the inner side of the outer terminal 102 abuts against the outer side of the annular sealing gasket 205 to seal the gap between the outer terminal 102 and the plug terminal 202, which helps to increase the stability of the plug connection and further enhances the stability of the plug connection between the plug 2 and the socket 1.

[0034] refer to Figure 3 and Figure 7 As shown, the inner terminal 103 has a second insertion interface 1031 at its center, and the inner periphery of the second insertion interface 1031 has a plurality of limiting strips 1032 along the circumferential direction; the first insertion interface 2021 has a conductive terminal (not shown in the figure) at its center, and the conductive terminal is used to be inserted into the second insertion interface 2021 and is limited between the limiting strips 1032.

[0035] When the plug terminal 202 of the plug 2 is inserted into the first annular slot 105, so that the first plug interface 2021 is sleeved on the outside of the inner terminal 103, the conductive terminal at the center of the first plug interface 2021 will be inserted into the second plug interface 1031 of the inner terminal 103 and connected to it. The position of the conductive terminal is limited by the limiting strip 1032, so that the connection between the conductive terminal and the second plug interface 1031 is stable and does not wobble, further enhancing the connection stability between the plug 2 and the socket 1.

[0036] refer to Figure 2 and Figure 3 As shown, a square mounting plate 7 is provided on the outer side of one end of the opening of the socket body 1. One end of the mounting plate 7 is rotatably connected to a connector cover 8 via a pivot. The other end of the mounting plate 7 is detachably connected to the other end of the connector cover 8.

[0037] The connector cover 8 has a hook 81 and a first locking hole 82 at the end away from the rotating shaft. The mounting plate 7 has a slot 71 and a second locking hole 72 that mate with the hook and the first locking hole 82. The hook 81 and the slot 71 engage to initially fix the connector cover 8 to the mounting plate 7. The first locking hole 82 and the second locking hole 71 allow for the insertion of a lock to further secure the connector cover 8 to the mounting plate 7, thus achieving a fixed connection between the connector cover 8 and the socket body 101 and sealing the receiving cavity 104. When the socket 1 is not in use, this can cover the opening of the receiving cavity 15, providing dust and water protection.

[0038] The mounting plate 7 has a mounting hole 71 on each of its four sides. When installing the socket 1, the mounting hole 71 is aligned with the mounting hole at the installation position, and the screw is screwed in to install and fix the socket 1.

[0039] The outer wall of the socket body 1 is arranged in a ring with several heat dissipation substrates 9, which can effectively increase the heat dissipation surface area, dissipate the heat generated inside the socket 1 when it is working, thereby effectively reducing the working temperature of the socket 1 and improving the heat dissipation efficiency.

[0040] A through hole 10 is provided through the middle of the side of the socket body 1, and a micro switch is connected to the through hole 10. When the plug 2 is connected to the socket 1, the micro switch is triggered by the plug 2 and connected to it, thereby sending a signal to the connector to start the power supply.

[0041] This utility model provides a high-current connector with a locking structure. By setting the locking structure, the plug 2 and socket 2 are firmly connected and not easy to loosen, which significantly improves the safety of use.

[0042] The above-disclosed embodiments are merely some preferred embodiments of the present utility model, and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model patent application shall still fall within the scope of the present utility model.

Claims

1. A large current connector with locking structure, comprising a socket and a plug, characterized in that, It also includes a locking structure, which includes a first locking block and a first inverted L-shaped locking groove that matches the first locking block, a second locking block and a second inverted L-shaped locking groove that matches the second locking block; the first inverted L-shaped locking groove and the second inverted L-shaped locking groove each include a transverse locking groove and a longitudinal locking groove that communicates with the transverse locking groove; The socket includes a socket body, a cylindrical outer terminal, and an inner terminal. The socket body has an opening at one end and extends to the opposite end to form a receiving cavity. The outer terminal is disposed within the receiving cavity, and the inner terminal is disposed inside the outer terminal. A first annular slot is formed between the inner terminal and the outer terminal. Two opposing first locking blocks are respectively provided at both ends of the inner surface of the outer terminal. Two centrally symmetrical second inverted L-shaped locking slots are respectively recessed at both ends of the outer surface of the outer terminal. The openings of the second inverted L-shaped locking slots are located at the outer ends of the openings of the outer terminal, and the second inverted L-shaped locking slots correspond one-to-one with the first locking blocks. The plug includes a plug body and a plug terminal connected to one end of the plug body. A plug sleeve is fitted around the plug terminal, and the plug terminal extends beyond the plug sleeve. One end of the plug sleeve is connected to the plug body, and the inner side of the other end forms a second annular slot with the outer periphery of the plug terminal. The two ends of the outer surface of the plug terminal are respectively recessed inward to form two centrally symmetrical first inverted L-shaped slots, and the opening of the first inverted L-shaped slots is located at the end of the outer surface of the plug terminal. The plug sleeve is provided with two opposing second locking blocks at both ends near the inner surface of the plug terminal, and the first inverted L-shaped slots correspond one-to-one with the second locking blocks. The center of the plug terminal has a first plug interface that matches the inner terminal; the plug terminal is inserted into the first annular slot, so that the first plug interface is sleeved on the outside of the inner terminal and the outer terminal is inserted into the second annular slot, thereby limiting and locking the first card block in the transverse card slot of the first inverted L-shaped card slot, and locking the second card block in the longitudinal card slot of the second inverted L-shaped card slot.

2. The large current connector with locking structure according to claim 1, wherein, The plug terminal is also provided with an annular groove, which is located above the horizontal groove of the first inverted L-shaped slot, and an annular sealing gasket is fixedly installed in the annular groove.

3. The large current connector with locking structure according to claim 1, wherein, The inner terminal has a second insertion interface at its center, and the inner periphery of the second insertion interface has several limiting strips along its circumferential direction; the first insertion interface has a conductive terminal at its center, and the conductive terminal is used to insert into the second insertion interface and is limited between the limiting strips.

4. The large current connector with locking structure according to claim 1, wherein, A square mounting plate is provided on the outer side of one opening of the socket body. One end of the mounting plate is rotatably connected to a connector cover via a pivot. The other end of the mounting plate is detachably connected to the other end of the connector cover.

5. A high current connector with locking structure according to claim 4, wherein, The connector cover is provided with a hook and a first locking hole at one end away from the rotating shaft, and the mounting plate is provided with a slot and a second locking hole that cooperate with the hook and the first locking hole.

6. The large current connector with locking structure according to claim 4, wherein, The mounting plate has a mounting hole on each of its four sides.

7. The large current connector with locking structure according to claim 1, wherein, The outer side wall of the socket body is annularly arranged by several heat dissipation substrates.

8. The large current connector with locking structure according to claim 1, wherein, A through hole is arranged through the middle of the side of the socket body, and a micro switch is arranged at the through hole.

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