High-current connector

Abstract

The present invention discloses a high-current connector, which includes a high-current female socket and a high-current plug that can be inserted and conduct electricity with each other. The high-current female socket includes a plastic socket and two electrode terminals for passing high current. The front end of the plastic socket has a docking groove for the plug to insert. The plastic socket is provided with a first terminal hole for the electrode terminal to be inserted and penetrate through the docking groove from its rear end forward. The electrode terminal is inserted into the first terminal hole, and the front end of the electrode terminal is exposed in the docking groove. An outwardly protruding positioning portion is formed around the electrode terminal. A plurality of elastic clamping arms are formed at the front end of the inner wall of the first terminal hole. After the electrode terminal is inserted into the first terminal hole, the elastic clamping arms elastically press against the rear end face of the positioning portion and then hold the electrode terminal to prevent the electrode terminal from retreating, thereby enhancing the holding force of the electrode terminal and stably installing the electrode terminal on the inner wall of the first terminal hole of the plastic socket, effectively preventing the electrode terminal from retreating during use.

Description

Technical Field:

[0001] The present invention relates to the technical field of connector products, and particularly refers to a high-current connector. Background Art:

[0002] So far, electrical connectors have developed into a series of and specialized products with complete product categories, rich variety specifications, diverse structural forms, refined professional directions, obvious industry characteristics, and standardized standard systems.

[0003] With the continuous expansion of the application fields of electrical connectors, electrical connectors are also beginning to be used in some high-power occasions that require the transmission of high currents to achieve the connection and disconnection of electrical circuits, thus promoting the emergence of high-current connectors. High-current connectors are widely used in fields such as electric vehicles, electric forklifts, UPS, general power supplies, medical equipment, solar energy, and new energy.

[0004] A high-current connector generally includes a high-current female socket and a high-current plug that can be inserted and conducted with each other. However, there is a risk that the terminals of both the high-current female socket and the high-current plug will move backward during use.

[0005] Specifically, a high-current female socket generally includes a plastic socket and two electrode terminals for passing high currents. The plastic socket has a docking groove for inserting the plug and a first terminal hole for inserting the electrode terminals. Since the electrode terminals need to conduct high currents, the size of the electrode terminals needs to be made relatively large. This will cause a relatively large force when docking with the plug. To prevent the electrode terminals from moving backward during use, the general method is to form barbs on the outside of the electrode terminals. By the interference of these barbs with the inner wall of the first terminal hole, a certain holding force can be achieved, and thus the electrode terminals can be prevented from moving backward during use to a certain extent. However, when the electrode terminals are inserted, the barbs have already interfered with the inner wall of the first terminal hole and generated debris, and at the same time, a groove will be formed on the inner wall of the first terminal hole. This will result in insufficient holding force formed by the interference of the barbs with the inner wall of the first terminal hole, and there will still be a risk that the electrode terminals will move backward during use, which may cause the entire electrode terminal connection to fail and affect the normal operation of the high-current female socket.

[0006] In addition, a high-current plug generally includes an insulating base and two polar terminals for conducting high current. The insulating base has a docking groove for the plug to be inserted and insertion holes for the polar terminals to be inserted. Since the polar terminals need to conduct high current, the size of the polar terminals needs to be relatively large. This will cause a relatively large force when docking with the plug. To prevent the polar terminals from retreating during use, the general method is to form barbs on the outer side of the polar terminals. By the interference of these barbs with the inner wall of the insertion hole, a certain holding force can be achieved, thereby preventing the polar terminals from retreating during use to a certain extent. However, when the polar terminals are inserted, the barbs have already interfered with the inner wall of the insertion hole and generated debris, and at the same time, a groove will be formed on the inner wall of the insertion hole. This will lead to insufficient holding force formed by the interference of the barbs with the inner wall of the insertion hole, and there will still be a risk of the polar terminals retreating during use, which may cause the entire polar terminal connection to fail and affect the normal operation of the high-current plug connector.

[0007] In view of this, the inventor of the present invention proposes the following technical solutions. Summary of the Invention:

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a high-current connector.

[0009] To solve the above technical problems, the present invention adopts the following technical solutions: The high-current connector includes a high-current female base and a high-current plug that can be inserted into each other for conduction. Among them, the high-current female base includes a plastic base and two electrode terminals for conducting high current. The front end of the plastic base has a docking groove for the plug to be inserted. The plastic base is provided with a first terminal hole that penetrates the docking groove for the electrode terminals to be inserted along its rear end forward. The electrode terminal is inserted through the first terminal hole, and the front end of the electrode terminal is exposed in the docking groove; the high-current plug includes an insulating base that can be inserted into the docking groove and two polar terminals that are docked and conduct with the electrode terminals to conduct high current. The insulating base has a first insertion hole for the polar terminals to be inserted. An outwardly protruding positioning portion is formed around the electrode terminal. A plurality of elastic clamping arms are formed at the front end of the inner wall of the first terminal hole. After the electrode terminal is inserted through the first terminal hole, the elastic clamping arms elastically press against the rear end face of the positioning portion and then hold the electrode terminal to prevent the electrode terminal from retreating; the rear end of the insulating base is inserted with a rear plug by a snap-fitting method. The rear plug has a second insertion hole that penetrates the front and back and corresponds to the first insertion hole. A radially distributed and C-shaped positioning flange is formed on the inner wall of the second insertion hole. A positioning ring groove is provided on the polar terminal; the polar terminal is inserted into the second insertion hole, and the positioning flange is clamped in the positioning ring groove to lock the polar terminal. The front end of the polar terminal is inserted into the first insertion hole, and the first wire fixedly connected to the rear end of the polar terminal passes through the second insertion hole and extends out of the rear end face of the rear plug and the insulating base.

[0010] Furthermore, in the above technical solution, a plurality of positioning ribs are formed at the front end of the inner wall of the first terminal hole, and an accommodating space is formed between adjacent two positioning ribs. The elastic clamping arm is placed in the accommodating space and can move within the accommodating space; the inner side surface of the positioning rib covers the outer surface of the positioning portion.

[0011] Furthermore, in the above technical solution, the elastic clamping arm includes an elastic arm body integrally connected to the inner wall of the first terminal hole and inclinedly distributed, and a pressing portion integrally formed at the end of the elastic arm body and horizontally distributed; the inner side surface of the pressing portion wraps around the positioning groove located at the rear side of the positioning portion, and the front end surface of the pressing portion abuts against the rear end surface of the positioning portion. Among them, the longitudinal section of the elastic clamping arm is arc-shaped.

[0012] Furthermore, in the above technical solution, the electrode terminal is formed with a first step for preventing over-insertion into the first terminal hole, and the first step abuts against the outside of the rear end opening of the first terminal hole.

[0013] Furthermore, in the above technical solution, a first sealing ring is provided between the electrode terminal and the inner wall of the first terminal hole, and sealing is performed through the first sealing ring; wherein, a first annular groove is provided on the periphery of the electrode terminal, the first sealing ring is sleeved on the first annular groove, and the outer surface of the first sealing ring is in pressing contact with the first terminal hole.

[0014] Furthermore, in the above technical solution, the plastic base is provided with a second terminal hole for inserting the signal terminal and penetrating through the docking groove from its rear end forward. The signal terminal penetrates through the second terminal hole, and the front end of the signal terminal is exposed in the docking groove. Among them, a guiding and positioning convex ring extending forward into the docking groove is further formed at the front end of the second terminal hole. The guiding and positioning convex ring wraps around the periphery of the signal terminal to position the signal terminal to enhance the holding force; the rear end of the plastic base is filled with glue to form a sealing colloid. The sealing colloid seals the gap between the signal terminal and the second terminal hole, and makes the signal terminal and the plastic base adhesively fixed; an external sealing ring is provided on the periphery of the front end of the insulating base, and the external sealing ring contacts the inner wall of the docking groove to form a sealed assembly.

[0015] Furthermore, in the above technical solution, a plurality of anti-fooling limit blocks with different sizes and / or shapes are formed on the inner wall of the docking groove, and the anti-fooling limit blocks extend to the front end face of the plastic base. At least one locking hole penetrating the docking groove is formed on the outer side surface of the plastic base; an outwardly protruding mounting plate is formed on the outside of the plastic base, the mounting plate has a hole position, and a sealing gasket is arranged at the rear side of the mounting plate; a plurality of anti-fooling limit grooves with different sizes and / or shapes and used for limiting and adapted to the anti-fooling limit blocks are arranged on the outer side of the insulating base; a plurality of movable grooves and elastic arms spanning above the movable grooves are formed on the outer side of the insulating base, both ends of the elastic arms are integrally connected to the outer side of the insulating base, and a convex lock protruding outward is formed on the outer side of the elastic arms, and the convex lock can be locked in the locking hole.

[0016] Furthermore, in the above technical solution, the second insertion hole has an open structure, and the second insertion hole has a window penetrating the side surface of the rear plug.

[0017] Furthermore, in the above technical solution, a limiting sliding groove penetrating the front end face thereof and a locking block arranged at the bottom of the limiting sliding groove are arranged on the outer side of the rear plug; a locking buckle is formed in the inner cavity at the rear end of the insulating base, and the locking buckle is inserted into the limiting sliding groove and is snap-fixed with the locking block; a large limiting groove and a small limiting groove penetrating the front end face thereof are arranged on the outer side of the rear plug; a large limiting block and a small limiting block are formed in the inner cavity at the rear end of the insulating base, the large limiting block is embedded in the large limiting groove, and the small limiting block is embedded in the small limiting groove; the limiting sliding groove is arranged at the end of the large limiting groove; a limiting seat is further formed in the inner cavity at the rear end of the insulating base, and the inner wall of the limiting seat abuts against the outer side of the rear plug. The insulating base is filled with glue to form a waterproof colloid, and the waterproof colloid wraps the rear end face of the rear plug and fills and seals the gap formed between the second insertion hole in the rear plug and the first electric wire.

[0018] Furthermore, in the above technical solution, the insulating base has a third insertion hole for inserting a communication terminal; the rear plug has a fourth insertion hole penetrating the front and rear surfaces and corresponding to the third insertion hole, the communication terminal is inserted into the third insertion hole, and a second electric wire fixedly connected to the rear end of the communication terminal passes through the fourth insertion hole and extends out of the rear end faces of the rear plug and the insulating base; the waterproof colloid also fills and seals the gap formed between the fourth insertion hole in the rear plug and the second electric wire.

[0019] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0020] 1. In the large-current female socket, a positioning portion protruding outward is formed around the electrode terminal. At the front end of the inner wall of the first terminal hole, a number of elastic clamping arms are formed. After the electrode terminal is inserted into the first terminal hole, the elastic clamping arms elastically press against the rear end face of the positioning portion and then hold the electrode terminal to prevent the electrode terminal from retreating, thereby enhancing the holding force of the electrode terminal, enabling the electrode terminal to be stably installed on the inner wall of the first terminal hole of the plastic socket, effectively preventing the electrode terminal from retreating during use, ensuring the normal operation of the large-current female socket, and having strong market competitiveness.

[0021] 2. In the large-current plug, when the polar terminal is inserted into the rear plug, the C-shaped positioning flange in the rear plug is clamped in the positioning ring groove on the polar terminal, so as to lock the polar terminal. And the rear plug is inserted and fixed on the insulating seat, so as to ensure that the polar terminal is stably installed in the insulating seat and prevent the polar terminal from moving forward and backward, thereby effectively preventing the polar terminal from retreating during use, ensuring the normal operation of the large-current plug, and having strong market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS:

[0022] Figure 1 is the assembly drawing of the present invention;

[0023] Figure 2 is the perspective view of the large-current female socket of the present invention;

[0024] Figure 3 is the perspective view of the large-current female socket from another angle of the present invention;

[0025] Figure 4 is the cross-sectional view of the large-current female socket of the present invention;

[0026] Figure 5 is the exploded perspective view of the large-current female socket of the present invention;

[0027] Figure 6 is the perspective view of the electrode terminal of the present invention;

[0028] Figure 7 is the perspective view of the signal terminal of the present invention;

[0029] Figure 8 is the perspective view of the large-current plug of the present invention;

[0030] Figure 9 is the front view of the large-current plug of the present invention;

[0031] Figure 10 is the exploded perspective view of the large-current plug of the present invention;

[0032] Figure 11 is Figure 9 the cross-sectional view taken along the A-A direction in

[0033] Figure 12 is Figure 9 a sectional view taken along the B - B direction in the middle;

[0034] Figure 13 is a perspective view of the large - current plug of the present invention after removing the insulating seat;

[0035] Figure 14 is a perspective view of the insulating seat of the present invention;

[0036] Figure 15 is a perspective view of the rear plug of the present invention. Specific embodiments:

[0037] The present invention will be further described below in conjunction with specific embodiments and the accompanying drawings.

[0038] See Figures 1-15 as shown, it is a large - current connector, which includes a large - current female seat 100 and a large - current plug 200 that can be inserted and conduct electricity with each other.

[0039] Combined with Figures 2-7 as shown, the large - current female seat 100 includes a plastic seat 1 and two electrode terminals 2 for passing large current. The front end of the plastic seat 1 has a docking groove 11 for inserting the large - current plug 200. The plastic seat 1 is provided with a first terminal hole 12 that runs through the docking groove 11 for inserting and mounting the electrode terminal 2. The electrode terminal 2 is inserted into the first terminal hole 12, and the front end of the electrode terminal 2 is exposed in the docking groove 11 for conducting with the polarity terminal 7 in the large - current plug 200 inserted into the docking groove 11, so as to achieve the conduction of large current. Among them, the two electrode terminals are the positive terminal and the negative terminal respectively.

[0040] In order to improve the holding force of the electrode terminal 2 and prevent the electrode terminal 2 from retreating during use, the following design is made for this large - current female seat: The outer periphery of the electrode terminal 2 is formed with an outward - protruding positioning portion 21. A plurality of elastic clamping arms 10 are formed at the front end of the inner wall of the first terminal hole 12. After the electrode terminal 2 is inserted into the first terminal hole 12, the elastic clamping arms 10 elastically press against the rear end face of the positioning portion 21 and then hold the electrode terminal 2 to prevent the electrode terminal 2 from retreating, thereby enhancing the holding force of the electrode terminal 2, enabling the electrode terminal 2 to be stably installed on the inner wall of the first terminal hole 12 of the plastic seat 1, effectively preventing the electrode terminal 2 from retreating during use, ensuring the normal operation of the large - current female seat, and having extremely strong market competitiveness. In addition, the positioning groove 23 formed at the rear end of the positioning portion 21 in the electrode terminal 2 can also collect the debris generated when the electrode terminal 2 is inserted into the first terminal hole 12, avoiding the disorderly stringing of debris and affecting the assembly and use of the large - current female seat.

[0041] The longitudinal section of the elastic clamping arm 10 is arc-shaped, so that the elastic clamping arm 10 can better wrap the electrode terminal 2, thereby improving the holding force.

[0042] Specifically, the elastic clamping arm 10 includes an elastic arm body 101 integrally connected to the inner wall of the first terminal hole 12 and inclinedly distributed, and a pressing portion 102 integrally formed at the end of the elastic arm body 101 and horizontally distributed; the inner side surface of the pressing portion 102 is wrapped in the positioning groove 23 behind the positioning portion 21, and the front end surface of the pressing portion 102 abuts against the rear end surface of the positioning portion 21, thereby greatly enhancing the holding force of the electrode terminal 2 and effectively preventing the electrode terminal 2 from accidentally withdrawing from the first terminal hole 12.

[0043] In addition, the electrode terminal 2 is formed with a first step 24 for preventing over-insertion into the first terminal hole 12, and the first step 24 abuts against the outside of the rear end opening of the first terminal hole 12, thereby effectively preventing the electrode terminal 2 from over-inserting into the first terminal hole 12 and ensuring the stability of the assembly.

[0044] A plurality of positioning ribs 122 are formed at the front end of the inner wall of the first terminal hole 12, and an accommodating space 121 is formed between adjacent two positioning ribs 122. The elastic clamping arm 10 is placed in the accommodating space 121 and can move within the accommodating space 121, that is, it can expand outward, etc.; the inner side surface of the positioning rib 122 covers the outer surface of the positioning portion 21, thereby ensuring the ortho-position of the electrode terminal 2, having a guiding property, preventing the electrode terminal 2 from shifting during insertion, and ensuring the accuracy of the assembly structure.

[0045] A first sealing ring 3 is provided between the electrode terminal 2 and the inner wall of the first terminal hole 12 and is sealed through the first sealing ring 3, thereby achieving a sealing effect and achieving a good waterproof function. Specifically, a first annular groove 25 is provided on the periphery of the electrode terminal 2, the first sealing ring 3 is sleeved on the first annular groove 25, and the outer surface of the first sealing ring 3 is in pressing contact with the first terminal hole 12, thereby ensuring the sealing performance.

[0046] A wire groove 26 is formed at the rear end of the electrode terminal 2. The metal wire core 41 of the wire 4 is inserted into the wire groove 26, and the rear end of the electrode terminal 2 is riveted to fasten the metal wire core 41, ensuring the stability of the connection.

[0047] The plastic base 1 is provided with a second terminal hole 13 that runs forward from its rear end for inserting and penetrating the signal terminal 5 through the docking groove 11. The signal terminal 5 is inserted into the second terminal hole 13, and the front end of the signal terminal 5 is exposed in the docking groove 11. Among them, a guiding and positioning convex ring 14 that extends forward into the docking groove 11 is formed at the front end of the second terminal hole 13. The guiding and positioning convex ring 14 wraps around the periphery of the signal terminal 5 to position the signal terminal 5 and enhance the holding force. The signal terminal 5 is used for transmitting signals, and the size of the signal terminal 5 is smaller than that of the electrode terminal 2.

[0048] The rear end of the plastic base 1 is filled with glue to form a sealing colloid 15. The sealing colloid 15 seals the gap between the signal terminal 5 and the second terminal hole 13, ensuring the sealing performance to have good waterproof performance, and bonding and fixing the signal terminal 5 to the plastic base 1, thereby enhancing the assembly stability and improving the holding force.

[0049] A plurality of anti-false-positioning limit blocks 111 with different sizes and / or shapes are formed on the inner wall of the docking groove 11. The anti-false-positioning limit blocks 111 extend to the front end face of the plastic base 1. The large-current plug 200 is limited by the anti-false-positioning limit blocks 111. At least one locking hole 112 that penetrates the docking groove 11 is formed on the outer side of the plastic base 1. The large-current plug 200 is locked through the locking hole 112. Specifically, a plurality of anti-false-positioning limit grooves 606 with different sizes and / or shapes and used for limiting are provided on the outer side of the insulating base 6 in the large-current plug. The anti-false-positioning limit grooves 606 are used to adapt to the large-current female base 100 to achieve the limiting function, ensure the stability of the assembly structure between the two, and also play an anti-false-positioning effect, effectively preventing the large-current plug 200 from being inserted reversely.

[0050] An outwardly protruding mounting plate 16 is formed on the outside of the plastic base 1. The mounting plate 16 has a hole position 161, and a sealing gasket 162 is provided on the rear side of the mounting plate 16. When the large-current female base 100 of the present invention is in use, the plastic base 1 is installed on the housing of the device. The mounting plate 16 contacts the housing and is fixed to the housing by screws passing through the hole position 161, thereby fixing the large-current female base 100 to the housing. The sealing gasket 162 is squeezed between the mounting plate 16 and the housing to achieve sealing, thus realizing the waterproof function.

[0051] Combined Figures 8-15 As shown, the large-current plug 200 includes an insulating base 6 and two polarity terminals 7 for passing large current. The insulating base 6 has a first insertion hole 61 for inserting the polarity terminals 7. When in use, the insulating base 6 is inserted into the docking groove 11 of the large-current female base 100, and the polarity terminals 7 are electrically connected to the electrode terminals 2 in the large-current female base 100, thereby realizing the conduction of large current. Among them, the two polarity terminals 7 are respectively the positive terminal and the negative terminal.

[0052] In order to improve the holding force of the electrode terminal 2 and prevent the electrode terminal 2 from retracting during use, the high-current plug is designed as follows: A rear plug 8 is inserted into the rear end of the insulating seat 6 by means of snap fixation. The rear plug 8 has a second insertion hole 81 that penetrates through the front and back surfaces and corresponds to the first insertion hole 61. A positioning flange 82 that is radially distributed and C-shaped is formed on the inner wall of the second insertion hole 81. A positioning ring groove 71 is provided on the polar terminal 7. The polar terminal 7 is inserted into the second insertion hole 81, and the positioning flange 82 is clamped into the positioning ring groove 71 to lock the polar terminal 7. The front end of the polar terminal 7 is inserted into the first insertion hole 61, and the first wire 70 fixedly connected to the rear end of the polar terminal 7 passes through the second insertion hole 81 and extends out of the rear end faces of the rear plug 8 and the insulating seat 6. Since when the polar terminal 7 is inserted into the rear plug 8, the C-shaped positioning flange 82 in the rear plug 8 is clamped into the positioning ring groove 71 on the polar terminal 7, the purpose of locking the polar terminal 7 is achieved. Moreover, the rear plug 8 is inserted and fixed to the insulating seat 6, thereby ensuring that the polar terminal 7 is stably installed in the insulating seat 6 and preventing the polar terminal 7 from moving back and forth. Thus, it effectively prevents the polar terminal 7 from retracting during use, ensuring the normal operation of the high-current plug and having strong market competitiveness.

[0053] The second insertion hole 81 has an open structure. The second insertion hole 81 has a window 811 that penetrates through the side surface of the rear plug 8, which facilitates the installation of the polar terminal 7 into the second insertion hole 81 and also facilitates the fixing of the first wire 70 inserted into the second insertion hole 81 to the rear end of the polar terminal 7. Specifically, after the first wire 70 is inserted into the rear end of the polar terminal 7, the metal wire core of the first wire 70 is fixed to the rear end of the polar terminal 7 by means of riveting. That is, the open-structured second insertion hole 81 facilitates the riveting process.

[0054] In order to ensure the stability of the assembly of the rear plug 8 and the insulating seat 6, the following design is also made: A limiting chute 83 that penetrates through the front end face and a locking block 84 placed at the bottom of the limiting chute 83 are provided on the outer side of the rear plug 8. A locking buckle 62 is formed in the inner cavity at the rear end of the insulating seat 6. The locking buckle 62 is inserted into the limiting chute 83 to achieve a limiting effect and is snap-fixed to the locking block 84, thereby ensuring that the rear plug 8 is stably installed inside the rear end of the insulating seat 6, effectively preventing the rear plug 8 from retracting, and to a certain extent, further ensuring that the polar terminal 7 will not retract, making it more convenient to use.

[0055] In addition, a large limiting groove 85 and a small limiting groove 86 penetrating through the front end face are provided on the outer side of the rear plug 8; a large limiting block 601 and a small limiting block 602 are formed in the inner cavity at the rear end of the insulating seat 6. The large limiting block 601 is embedded in the large limiting groove 85, and the small limiting block 602 is embedded in the small limiting groove 86, so as to achieve effective limiting, prevent the rear plug 8 from rotating relative to the insulating seat 6, and can also achieve a good anti-fooling effect, that is, it can prevent the rear plug 8 from shifting during installation, thereby ensuring the assembly quality.

[0056] Furthermore, the limiting sliding groove 83 is arranged at the end of the large limiting groove 85; a limiting seat 603 is also formed in the inner cavity at the rear end of the insulating seat 6. The inner wall of the limiting seat 603 abuts against the outer side of the rear plug 8, so as to further achieve effective limiting and achieve a good anti-fooling effect, that is, it can prevent the rear plug 8 from shifting during installation, thereby ensuring the assembly quality.

[0057] In order to improve the waterproof performance, a waterproof colloid 63 is formed by pouring glue on the insulating seat 6. The waterproof colloid 63 wraps the rear end face of the rear plug 8 and fills and seals the gap formed between the second insertion hole 81 in the rear plug 8 and the first electric wire 70, so as to achieve an extremely ideal sealing effect, and thus has a good waterproof function.

[0058] A plurality of movable grooves 65 and elastic arms 66 straddling the movable grooves 65 are formed on the outer side of the insulating seat 6. Among them, the function of the movable groove 65 is to provide space for the elastic arm 66 when it is pressed down, so that the elastic arm 66 has a good elastic force. Both ends of the elastic arm 66 are integrally connected to the outer side of the insulating seat 6, so as to ensure that the elastic arm 66 has sufficient strength, a larger force arm, and good elastic force. And a convex 661 protruding outward is formed on the outer side of the elastic arm 66. The elastic arm 66 and its convex 661 are used to form a locking assembly with the docking groove after being inserted into the docking groove of the large-current female seat, so as to ensure a stable connection between the large-current plug and the large-current female seat, so as to achieve stable conduction of large current. Specifically, the convex 661 can be locked in the locking hole 112 of the large-current female seat 100, so as to achieve the purpose of locking, and thus achieve the purpose of forming a stable assembly.

[0059] An external sealing ring 67 is provided on the periphery of the front end of the insulating seat 6; after being inserted into the docking groove 11 of the large-current female seat 100, the external sealing ring 67 contacts the inner wall of the docking groove 11 to form a sealing assembly, so as to achieve a good waterproof effect. A plurality of waterproof lines 604 distributed at intervals are formed on the periphery of the rear end of the insulating seat 6, which are convenient for users to pinch by hand and will not slide, so as to achieve a stable insertion action and make the operation more convenient.

[0060] The insulating seat 6 has a third insertion hole 605 for the communication terminal 9 to be inserted; the rear plug 8 has a fourth insertion hole 87 that passes through the front and rear sides and corresponds to the third insertion hole 605. The communication terminal 9 is inserted into the third insertion hole 605, and the second electric wire 90 fixedly connected to the rear end of the communication terminal 9 passes through the fourth insertion hole 87 and extends out of the rear end surface of the rear plug 8 and the insulating seat 6; the waterproof colloid 63 also fills and seals the gap formed by the fourth insertion hole 87 and the second electric wire 90 in the rear plug 8, thereby achieving a good waterproof effect.

[0061] In summary, in the high-current female socket 100, the outer periphery of the electrode terminal 2 is formed with a positioning portion 21 protruding outward, and the front end of the inner wall of the first terminal hole 12 is formed with a plurality of elastic clamping arms 10. After the electrode terminal 2 is inserted into the first terminal hole 12, the elastic clamping arms 10 elastically press against the rear end surface of the positioning portion 21 to support the electrode terminal 2 to prevent the electrode terminal 2 from retreating, thereby enhancing the holding force of the electrode terminal 2, so that the electrode terminal 2 is stably installed in the inner wall of the first terminal hole 12 of the plastic seat 1, and can effectively prevent the electrode terminal 2 from retreating during use, ensuring the normal operation of the high-current female socket, and having strong market competitiveness. In addition, the positioning groove 23 formed at the rear end of the positioning portion 21 in the electrode terminal 2 can also collect debris generated by the electrode terminal 2 being inserted into the first terminal hole 12, to prevent the debris from wandering around and affecting the assembly and use of the high-current female socket.

[0062] In the high-current plug 200, when the polarity terminal 7 is installed in the rear plug 8, the C-shaped positioning flange 82 of the rear plug 8 is engaged with the positioning ring groove 71 on the polarity terminal 7, thereby locking the polarity terminal 7. The rear plug 8 is inserted and fixed to the insulating seat 6, thereby ensuring that the polarity terminal 7 is stably installed in the insulating seat 6 and preventing the polarity terminal 7 from moving forward and backward. This effectively prevents the polarity terminal 7 from moving backward during use, ensuring the normal operation of the high-current plug and having strong market competitiveness.

[0063] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made based on the structure, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A high-current connector, comprising a high-current female socket (100) and a high-current plug (200) that can be plugged into each other for conduction, wherein: The high-current female socket (100) comprises a plastic seat (1) and two electrode terminals (2) for passing a large current, wherein the front end of the plastic seat (1) has a docking groove (11) for inserting a plug, and the plastic seat (1) is provided with a first terminal hole (12) along the rear end thereof for inserting the power terminal (2) and passing through the docking groove (11), wherein the electrode terminal (2) is inserted into the first terminal hole (12), and the front end of the electrode terminal (2) is exposed in the docking groove (11); the high-current plug (200) comprises an insulating seat (6) that can be inserted into the docking groove (11) and two polarity terminals (7) that are docked and connected with the electrode terminals (2) to pass a large current, wherein the insulating seat (6) has a first insertion hole (61) for inserting the polarity terminal (7). The invention is characterized in that: the outer periphery of the electrode terminal (2) is formed with a positioning portion (21) protruding outward, the front end of the inner wall of the first terminal hole (12) is formed with a plurality of elastic clamping arms (10), after the electrode terminal (2) is inserted into the first terminal hole (12), the elastic clamping arms (10) elastically press against the rear end surface of the positioning portion (21) and support the electrode terminal (2) to prevent the electrode terminal (2) from retreating; the rear end of the insulating seat (6) is fixed with a rear plug (8) by a snap-fit method, and the rear plug (8) has a second insertion hole (61) that passes through the front and rear sides and corresponds to the first insertion hole (61). 81), the inner wall of the second insertion hole (81) is formed with a radially distributed and C-shaped positioning flange (82), and the polarity terminal (7) is provided with a positioning ring groove (71); the polarity terminal (7) is inserted into the second insertion hole (81), and the positioning flange (82) is embedded in the positioning ring groove (71) to lock the polarity terminal (7), the front end of the polarity terminal (7) is inserted into the first insertion hole (61), and the first wire (70) fixedly connected to the rear end of the polarity terminal (7) passes through the second insertion hole (81) and extends outside the rear end surface of the rear plug (8) and the insulating seat (6); The outer side of the rear plug (8) is provided with a limiting slide groove (83) passing through the front end surface thereof and a locking block (84) placed at the bottom of the limiting slide groove (83); a locking buckle (62) is formed in the rear end inner cavity of the insulating seat (6), and the locking buckle (62) is inserted into the limiting slide groove (83) and fixed with the locking block (84); the outer side of the rear plug (8) is provided with a large limiting groove (85) and a small limiting groove (86) passing through the front end surface thereof; a large limiting block (601) and a small limiting block (602) are formed in the rear end inner cavity of the insulating seat (6), and the large limiting block (601) is embedded in the The small limiting block (602) is embedded in the small limiting groove (86) in the large limiting groove (85); the limiting sliding groove (83) is arranged at the end of the large limiting groove (85); a limiting seat (603) is also formed in the rear end inner cavity of the insulating seat (6), and the inner wall of the limiting seat (603) is in contact with the outer side of the rear plug (8); the insulating seat (6) is injected with glue to form a waterproof colloid (63), and the waterproof colloid (63) wraps the rear end surface of the rear plug (8) and fills the gap formed by the second insertion hole (81) and the first electric wire (70) in the sealed rear plug (8).

2. The high current connector according to claim 1, characterized in that: A plurality of positioning ribs (122) are formed on the front end of the inner wall of the first terminal hole (12), and an accommodating space (121) is formed between two adjacent positioning ribs (122). The elastic clamping arm (10) is placed in the accommodating space (121) and can move within the accommodating space (121); the inner side of the positioning rib (122) covers the outer surface of the positioning portion (21).

3. The high current connector according to claim 1, characterized in that: The elastic clamping arm (10) comprises an elastic arm body (101) integrally connected to the inner wall of the first terminal hole (12) and arranged obliquely, and a pressing portion (102) integrally formed at the end of the elastic arm body (101) and arranged horizontally; the inner side surface of the pressing portion (102) is wrapped in a positioning groove (23) located at the rear side of the positioning portion (21), and the front end surface of the pressing portion (102) abuts against the rear end surface of the positioning portion (21), wherein the longitudinal section of the elastic clamping arm (10) is in the shape of a circular arc.

4. The high current connector according to claim 3, characterized in that: The electrode terminal (2) is formed with a first step (24) for preventing over-insertion into the first terminal hole (12), and the first step (24) abuts against the outside of the rear end opening of the first terminal hole (12).

5. The high current connector according to claim 3, characterized in that: A first sealing ring (3) is provided between the electrode terminal (2) and the inner wall of the first terminal hole (12), and sealing is performed by the first sealing ring (3); wherein a first annular groove (25) is provided on the periphery of the electrode terminal (2), the first sealing ring (3) is sleeved on the first annular groove (25), and the outer surface of the first sealing ring (3) is in compression contact with the first terminal hole (12).

6. The high current connector according to claim 3, characterized in that: The plastic seat (1) is provided with a second terminal hole (13) along its rear end, which is for inserting the signal terminal (5) and passes through the docking groove (11). The signal terminal (5) is inserted into the second terminal hole (13), and the front end of the signal terminal (5) is exposed in the docking groove (11), wherein the front end of the second terminal hole (13) is also formed with a guide positioning convex ring (14) extending forward into the docking groove (11), and the guide positioning convex ring (14) is wrapped around the periphery of the signal terminal (5) to position the signal terminal (5) to enhance the holding force; the rear end of the plastic seat (1) is filled with glue to form a sealing colloid (15), and the sealing colloid (15) blocks the gap between the signal terminal (5) and the second terminal hole (13), and makes the signal terminal (5) and the plastic seat (1) bonded and fixed; the front end of the insulating seat (6) is provided with an external sealing ring (67), and the external sealing ring (67) contacts the inner wall of the docking groove (11) to form a sealed assembly.

7. The high current connector according to any one of claims 1 to 6, characterized in that: The inner wall of the docking groove (11) is formed with a plurality of anti-fouling limit blocks (111) of different sizes and / or shapes, and the anti-fouling limit blocks (111) extend to the front end surface of the plastic seat (1), and the outer side surface of the plastic seat (1) is provided with at least one lock hole (112) that passes through the docking groove (11); the outer surface of the plastic seat (1) is formed with an outwardly protruding mounting plate (16), the mounting plate (16) has a hole position (161), and a sealing rubber pad (162) is provided on the rear side of the mounting plate (16); ... anti-fouling limit blocks (111) extend to the front end surface of the plastic seat (1); the anti-fouling limit blocks (111) extend to the front end surface of the plastic seat (1) The outer side of the edge seat (6) is provided with a plurality of anti-foolproof limit grooves (606) of different sizes and / or shapes for limiting and adapted to the anti-foolproof limit block (111); the outer side of the insulating seat (6) is formed with a plurality of movable grooves (65) and an elastic arm (66) spanning above the movable grooves (65), both ends of the elastic arm (66) are integrally connected to the outer side of the insulating seat (6), and the outer side of the elastic arm (66) is formed with a locking protrusion (661) protruding outward, and the locking protrusion (661) can be locked in the lock hole (112).

8. The high current connector according to any one of claims 1 to 6, characterized in that: The second insertion hole (81) is an open structure, and the second insertion hole (81) has a window (811) that passes through the side of the rear plug (8).

9. The high current connector according to any one of claims 1 to 6, characterized in that: The insulating seat (6) has a third insertion hole (605) for inserting the communication terminal (9); the rear plug (8) has a fourth insertion hole (87) that passes through the front and rear surfaces and corresponds to the third insertion hole (605); the communication terminal (9) is inserted into the third insertion hole (605), and the second electric wire (90) fixedly connected to the rear end of the communication terminal (9) passes through the fourth insertion hole (87) and extends out of the rear end surface of the rear plug (8) and the insulating seat (6); the waterproof colloid (63) also fills the gap formed by the fourth insertion hole (87) and the second electric wire (90) in the sealed rear plug (8).

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