Dual lockout current connector

Abstract

The utility model provides a double locking type current connector, when the plug is inserted with the socket, the insertion terminal is inserted into the first annular insertion groove along the second slot, makes the first insertion mouth sleeve connection in the inner terminal outside and the outer terminal inserts into the second annular insertion groove, and the second clamping block enters the horizontal clamping groove of first inverted L type clamping groove through the first slot until abuts against the bottom thereof, then rotates the plug clockwise, makes the first clamping block enter and limit the horizontal clamping groove of second inverted L type clamping groove and is clamped, realizes the limit clamping of first clamping block and second inverted L type clamping groove, finally moves the second clamping block downwards and makes it limit clamping between the vertical clamping groove of first inverted L type clamping groove and the limit clamping block, thereby realizing the inside and outside double locking of plug and socket through the double limit clamping design, through the double limit of limit clamping block and the horizontal clamping groove of second inverted L type clamping groove, limit the plug to move upwards after plugging, effectively avoid the situation that the plug moves upwards and loosens after plugging.

Description

Technical Field

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

[0002] Current connectors are key components used to achieve electrical connections and current transmission. Their basic function is to establish a safe and reliable electrical connection path in a circuit system and to perform the task of conducting and disconnecting current. Depending on the application and current load, current connectors can be divided into low-voltage, low-current types and high-voltage, high-current types, and are widely used in various electronic devices, industrial control, automotive electrical systems, energy storage, and communication infrastructure.

[0003] Currently, some conventional high-current connectors rely solely on the insertion and removal of the plug and socket during mating to achieve connection, lacking effective anti-loosening designs. Under continuous vibration or mechanical impact, relying solely on friction or simple clips for single-point locking is insufficient to maintain a stable connection, easily causing the plug to shift upwards in the axial direction due to external forces, or even become loose. This tendency to loosen can easily cause fretting wear on the contact components within the mating interface, increasing contact 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 overcome the problems of easy loosening and insufficient reliability of existing high-current connectors under complex working conditions, it is necessary to provide a current connector with dual locking function. Utility Model Content

[0005] To address the technical problem of unstable insertion between the plug and socket in existing high-current connectors, which leads to easy displacement and loosening of the plug and socket and causes safety hazards, this utility model provides a double-locking current connector.

[0006] A double-locking current connector includes a socket and a plug for insertion into the socket. The socket includes a socket body, a cylindrical outer terminal, and an inner terminal. The socket body is open 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 first inverted L-shaped slots are respectively recessed at both ends of the outer surface of the outer terminal, and the first inverted L-shaped slots correspond one-to-one with the first locking blocks. The plug includes a plug body and a insertion terminal connected to one end of the plug body. A insertion sleeve is sleeved on the outside of the insertion terminal, and the insertion terminal extends beyond the insertion sleeve. One end of the insertion sleeve is connected to the plug body, and the inner side of the other end forms a second annular slot between it and the outer periphery of the insertion terminal. The two centrally symmetrical inverted L-shaped slots are respectively recessed at both ends of the outer surface of the insertion terminal. Two second inverted L-shaped slots; the insert sleeve has two opposing second locking blocks at both ends near the inner surface of the insert terminal, and the second inverted L-shaped slots correspond one-to-one with the second locking blocks; both the first and second inverted L-shaped slots include a transverse slot and a longitudinal slot communicating with the transverse slot, and the transverse slot of the first inverted L-shaped slot has a first opening located at the end of the outer surface of the outer terminal, and a limiting stop is provided on the side of the first opening facing the longitudinal slot of the first inverted L-shaped slot; the... The second inverted L-shaped slot has a second groove located at the end of the outer surface of the plug terminal in the longitudinal groove; the plug terminal has a first plug interface matching the inner terminal in the center; 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, and then the plug terminal is rotated and the first locking block is locked in the transverse groove of the second inverted L-shaped slot, and the second locking block is locked between the longitudinal groove of the first inverted L-shaped slot and the limiting block.

[0007] Furthermore, the limiting block is connected to the transverse slot sidewall of the first inverted L-shaped slot and is integrally formed.

[0008] Furthermore, an annular groove is provided outside the plug-in terminal. The annular groove is located above the transverse groove of the second inverted L-shaped slot, and an annular sealing gasket is fixedly installed inside the annular groove.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] Furthermore, a mounting hole is provided around each of the four sides of the mounting plate.

[0013] Furthermore, the outer wall of the socket body is provided with several heat dissipation substrates in a ring shape.

[0014] 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.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a double-locking current connector. When the plug and socket are inserted, the plug terminal is inserted downwards into the first annular slot along the second groove, 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. The second locking block enters the horizontal locking groove of the first inverted L-shaped locking groove through the first groove until it abuts against its bottom. Then, the plug is rotated clockwise, so that the first locking block enters and is locked in the horizontal locking groove of the second inverted L-shaped locking groove, realizing the locking and locking of the first locking block and the second inverted L-shaped locking groove. Finally, the second locking block is moved downwards to engage with the longitudinal slot of the first inverted L-shaped slot and the limiting locking block. This double-limiting locking design achieves double locking of the plug and socket, while the double limiting of the limiting block and the lateral slot of the second inverted L-shaped slot restricts the upward movement of the plug after insertion. This effectively prevents the plug from shifting upwards and becoming loose after insertion, thus avoiding the safety hazards caused by easy displacement and loosening of the plug and socket during insertion. This improves the safety and stability of high-current connectors and extends their service life. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a double-locking current connector 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.

[0017] 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 second 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 first inverted L-shaped card slot provided by this utility model.

[0018] Attached Figure Labels 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. Second inverted L-shaped slot; 41, 61. Horizontal slot; 42, 62. Vertical slot; 5. Second locking block; 6. First inverted L-shaped slot; 63. Limiting block; 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 As shown, a double-locking current connector includes a socket 1 and a plug 2 for insertion into the socket 1.

[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 is open 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. The inner terminal 103 is disposed inside the outer terminal 102, and 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 first inverted L-shaped locking slots 6, and the first inverted L-shaped locking slots 6 correspond one-to-one with the first locking blocks 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 has two inwardly recessed ends forming two centrally symmetrical second inverted L-shaped slots 4; the plug-in sleeve 203 has two oppositely arranged second locking blocks 5 near the inner surface of the plug-in terminal 202, and the second inverted L-shaped slots 4 and the second locking blocks 5 correspond one-to-one.

[0025] Each of the first inverted L-shaped slots 6 includes a horizontal slot 61 and a vertical slot 62 communicating with the horizontal slot 61. The second inverted L-shaped slot 4 includes a horizontal slot 41 and a vertical slot 42 communicating with the horizontal slot 41. The horizontal slot 41 of the first inverted L-shaped slot 4 has a first opening located at the end of the outer surface of the outer terminal 102, and a limiting block 63 is provided on the side of the first opening opposite the vertical slot 62 of the first inverted L-shaped slot 6. The vertical slot 42 of the second inverted L-shaped slot 4 has a second opening located at the end of the outer surface of the plug-in terminal 202. That is, one can enter the first slot-limited space formed by the first inverted L-shaped slot 6 and the limiting block 63 through the first opening, and enter the second slot-limited space of the second inverted L-shaped slot 4 through the second opening.

[0026] In this embodiment, the top surface of the first card block 3 is at the same height as the bottom surface of the transverse card slot 61 of the first inverted L-shaped card slot 6. The limiting block 63 is connected to the side wall of the transverse card slot 61 of the first inverted L-shaped card slot 6 and is integrally formed. 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, and then the plug terminal 202 is rotated and the first locking block 3 is locked in the transverse slot 41 of the second inverted L-shaped slot 4, and the second locking block 5 is locked between the longitudinal slot 62 of the first inverted L-shaped slot 6 and the limiting block 63.

[0027] The double-limiting locking design achieves double locking of the plug 2 and socket 1 from both inside and outside. At the same time, the double limiting of the limiting block 63 and the horizontal groove 41 of the second inverted L-shaped groove 4 ensures that when the plug 2 moves upward due to external force, the first locking block 3 is restricted by the inner top surface of the horizontal groove 41 of the second inverted L-shaped groove 4, and the second locking block 5 is restricted by the limiting block 63. This restricts the tendency of the plug to move upward arbitrarily after being plugged in, effectively preventing the plug from moving upward and becoming loose after being plugged in.

[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 second slot corresponds one-to-one with the first locking block 3 at both ends of the inner surface of the outer terminal 102; at this time, the first slots of the two first inverted L-shaped locking 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 second inverted L-shaped slot 4 along the second slot, 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, while 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 first 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 second 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 first inverted L-shaped slot 6 to the top of its longitudinal slot 62. At this time, the second locking block 4 is limited between the top of its longitudinal slot 62 and the bottom of the limiting block 63.

[0030] Finally, the plug 2 is inserted further downwards, so that the first locking block 3 abuts against the inner top surface of the horizontal locking groove 41 of the second 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, and is limited by the inner top surface of the horizontal locking groove 41 to avoid excessive upward movement. At the same time, the second locking block 4 moves downwards into the vertical locking groove 62 of the first 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 first inverted L-shaped locking groove 6, so that it is limited and locked in the vertical locking groove 62, and is limited by the limiting block 63 to avoid excessive upward movement, thereby realizing the double locking connection of the plug 2 and the socket 1.

[0031] The dual-limit locking design achieves double locking of plug 2 and socket 1, ensuring that the high-current connector will not shift or loosen during insertion, even with left-right or up-down movement. 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. In use, simply insert the connector, rotate plug 2 clockwise, and continue inserting to lock the connection between plug 2 and socket 1; the operation is simple and efficient.

[0032] The plug-in terminal 202 is also provided with an annular groove, which is located above the transverse groove 41 of the second 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 double-locking current connector. Through the double-locking structure, the plug 2 and socket 2 are firmly connected and are not prone to loosening upwards. Furthermore, the transverse groove 41 of the second inverted L-shaped groove 4 and the limiting block 63 respectively limit the upward movement of the first block 3 and the second block 4 from both inside and outside. This restricts the relative movement of the plug 2 and socket 2 during locking within a fixed safe range, effectively avoiding the problem of loosening caused by unilateral limiting, and significantly improving the safety of the connector.

[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 double-locking current connector comprising a socket and a plug for insertion into said socket, characterized in that, The socket includes a socket body, a cylindrical outer terminal, and an inner terminal. The socket body is open at one end and extends to the opposite end to form a receiving cavity. The outer terminal is disposed inside 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 first inverted L-shaped locking slots are respectively recessed at both ends of the outer surface of the outer terminal, and the first 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 second inverted L-shaped slots. 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 second inverted L-shaped slots correspond one-to-one with the second locking blocks. Both the first inverted L-shaped slot and the second inverted L-shaped slot include a horizontal slot and a vertical slot communicating with the horizontal slot. The horizontal slot of the first inverted L-shaped slot has a first opening located at the end of the outer surface of the outer terminal, and a limiting block is provided on the side of the first opening facing the vertical slot of the first inverted L-shaped slot. The vertical slot of the second inverted L-shaped slot has a second opening located at the end of the outer surface of the plug-in terminal. The plug terminal has a first plug interface at its center 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, and then the plug terminal is rotated and the first locking block is locked in the transverse slot of the second inverted L-shaped slot, and the second locking block is locked between the longitudinal slot of the first inverted L-shaped slot and the limiting block.

2. The double-locking current connector according to claim 1, characterized in that, The limiting block is connected to the transverse slot sidewall of the first inverted L-shaped slot and is integrally formed.

3. A double-locking current connector according to claim 1, characterized in that, The plug terminal is also provided with an annular groove, which is located above the horizontal groove of the second inverted L-shaped slot, and an annular sealing gasket is fixedly installed in the annular groove.

4. A double-locking current connector according to claim 1, characterized in that, 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.

5. A double-locking current connector according to claim 1, characterized in that, 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.

6. A double-locking current connector according to claim 5, characterized in that, 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.

7. A double-locking current connector according to claim 5, characterized in that, The mounting plate has a mounting hole on each of its four sides.

8. A double-locking current connector according to claim 1, characterized in that, The outer wall of the socket body is provided with several heat dissipation substrates in a ring shape.

9. A double-locking current connector according to claim 1, characterized in that, 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.

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