A high current connector

Abstract

The present invention discloses a high current connector with high current carrying capacity, low temperature rise and live operation protection function. The adopted technical solution includes a plug and a socket for plugging and matching, characterized in that: the plug includes a plug housing and a transfer row arranged in the plug housing, the socket includes a socket housing and a current terminal arranged in the socket housing, after the plug and the socket are plugged, the transfer row is connected to the current terminal through a first locking screw at the front end, the upper end of the plug housing is hinged with an upper cover, and a first spring is provided at the hinge, the lower end of the upper cover is provided with a shorting piece, at least two signal terminals are provided in the socket, when the upper cover is closed, the shorting piece short-circuits the two signal terminals, and when the upper cover is opened, the shorting piece is away from the signal terminal.

Description

Technical Field

[0001] The invention belongs to the field of new energy electric vehicles, and in particular relates to a high current connector. Background Art

[0002] A connector is also called a plug-in connector, which is a device that connects two active devices to transmit current or signals. A connector consists of a socket and a plug that is plugged in with the socket. The existing high-current connector structure, as shown in the Chinese invention patent with the authorization number "CN205846360U" and the name "A high-current connector with low shielding resistance", includes a plug and a socket that are plugged in. The plug includes a plug housing and a pin terminal arranged in the plug housing. The socket includes a socket housing and a jack terminal arranged in the socket housing. After the plug and the socket are plugged in, the pin terminal and the jack terminal are plugged in to realize the conduction of current. The disadvantages are: 1. The jack terminal is connected to the pin terminal through a wire spring or a crown spring in the jack, resulting in an unstable connection, low current carrying capacity, and high temperature rise; 2. Larger outer diameter cables are required for large current matching, and the terminals are still crimped, with high internal resistance, resulting in high temperature rise; 3. There is no live operation protection during disassembly, and employees are at risk of electric shock; 4. The volume is large and the design is not compact, which cannot meet the requirements of lightweight. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a high-current connector with high current carrying capacity, low temperature rise and live operation protection function.

[0004] In order to solve the above problems, the technical solution adopted by the present invention includes a plug and a socket for plugging together, characterized in that: the plug includes a plug housing and an adapter row arranged in the plug housing; the socket includes a socket housing and a current terminal arranged in the socket housing; after the plug and the socket are plugged together, the adapter row is connected to the current terminal through a first locking screw at the front end; an upper cover is hinged at the upper end of the plug housing, and a first spring is provided at the hinge; a shorting piece is provided at the lower end of the upper cover; at least two signal terminals are provided in the socket; when the upper cover is closed, the shorting piece short-circuits the two signal terminals; when the upper cover is opened, the shorting piece is away from the signal terminals.

[0005] The high current connector is characterized in that: the upper cover is provided with a screw mounting seat and a second locking screw installed in the screw mounting seat, and after the upper cover is covered with the socket housing, the second locking screw is tightened with the plug housing to fix it.

[0006] The high current connector is characterized in that a second spring and a first retaining spring are arranged in the screw mounting seat.

[0007] The high current connector is characterized in that a sealing gasket which seals with the second locking screw is provided at the upper end of the screw mounting seat.

[0008] The high current connector is characterized in that the current terminal is cylindrical, and the upper end of the current terminal is directly threadedly connected to the first locking screw.

[0009] The high current connector is characterized in that the upper end surface of the current terminal is provided with a point contact surface in an array.

[0010] The high-current connector is characterized in that: a front plug rubber core is provided at the front end of the plug shell, and a rear plug rubber core is provided at the rear end, the rear plug rubber core is connected to the front plug rubber core through a front connecting buckle, a socket rubber core is provided in the socket shell, the socket rubber core is sealed with the socket shell through a socket rubber core sealing ring, the current terminal is sealed with the socket rubber core through a current terminal sealing ring, the signal line connected to the signal terminal is sealed with the socket rubber core through a signal line plug, and the end face of the socket shell is sealed with the mounting surface through an end face sealing ring.

[0011] The high current connector is characterized in that: a shielding cover and a shielding ring are provided at the rear end of the plug shell, the front end of the shielding cover is sleeved on the rear end of the plug rear rubber core, the shielding ring is sleeved on the rear end of the shielding cover, and the side wall of the shielding cover is provided with a group of elastic contact pins that contact the plug shell.

[0012] The high current connector is characterized in that an insulating cap is provided on the top of the first locking screw.

[0013] The high current connector is characterized in that an upper cover sealing ring which seals with the upper cover is installed on the upper end of the socket housing.

[0014] The advantages of the high current connector of the present invention are as follows:

[0015] 1. The terminals are hard-connected with copper bars and copper columns and fixed with bolts, which makes the connection more reliable, with strong overcurrent capacity, large current carrying capacity and low temperature rise;

[0016] 2. The cables and copper bars are overlapped and fixed by ultrasonic welding, which has high strength, low internal strength and good performance;

[0017] 3. When employees are working with electricity, they should be properly protected to avoid accidental contact and electrical safety issues;

[0018] 4. Compact design, aluminum alloy shell, small size and light weight, meeting the requirements of lightweight design; 5. Suitable for a wide range of wire diameters, can adapt to 70~120mm² cables.

[0019] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an exploded view of the plug of the present invention;

[0021] Figure 2 is an exploded view of the socket of the present invention;

[0022] Figure 3 is a top view of the high current connector of the present invention;

[0023] Figure 4 yes Figure 3 AA section view;

[0024] Figure 5 yes Figure 3 BB section view;

[0025] Figure 6 yes Figure 3 CC section view;

[0026] Figure 7 It is a structural schematic diagram of the current terminal of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the upper cover of the present invention;

[0028] Fig. 9 is a schematic structural diagram of the first locking screw of the present invention;

[0029] Fig.10 It is a structural schematic diagram of the signal terminal of the present invention. DETAILED DESCRIPTION

[0030] Reference Figure 1-10As shown, the high current connector of the present invention comprises a plug 1 and a socket 2 for mating. The plug 1 comprises a plug housing 3 made of aluminum alloy material and a transfer row 4 arranged in the plug housing 3. The socket 2 comprises a socket housing 5 made of aluminum alloy material and a current terminal 6 arranged in the socket housing 5. After the plug 1 is plugged into the socket 2, the transfer row 4 is connected to the current terminal 6 through the first locking screw 7 at the front end. The upper end of the plug housing 3 is hinged with an upper cover 8 through a latch 26, and a first spring 9 is provided at the hinge. The first spring 9 is a general term, which can be a torsion spring, a spring, etc. After the upper cover 8 is opened, the first locking screw 7 is installed from the upper end of the plug housing 3 to connect the transfer row 4 and the current terminal 6. The upper cover 8 is provided with a shorting piece mounting column 29, and a shorting piece 10 is crimped at the lower end of the mounting column 29. In order to improve the connection strength between the shorting piece 10 and the mounting column 29, a shorting piece rubber core 41 is provided at the bottom of the mounting column 29, and a barb 30 is provided at the upper end of the shorting piece 10. The shorting piece 10 is connected to the shorting piece rubber core 41 by hard extrusion. Two signal terminals 11 are provided in the socket 2. The signal terminal 11 is provided with a clamping portion 27 at the front end and a crimping foot 28 at the rear end. The signal line is crimped by the crimping foot 28 and connected to the power management system. The power management system is a system provided by the car, which is a well-known technology and will not be described here. When the upper cover 8 is closed, the shorting piece 10 is inserted into the clamping portion 27 of the signal terminal 11 to short-circuit the two signal terminals 11. When the upper cover 8 is opened, the shorting piece 10 is away from the signal terminal 11 to disconnect the two signal terminals 11. The power management system automatically cuts off the power supply on the socket according to the disconnection signal. With the above structure, the replacement of the plug is more convenient. There is no need to pull the plug out of the socket. The connector can be disassembled and assembled by removing two locking screws. The socket and objects in the box are not affected, and the operating safety of employees is better protected to prevent electric shock.

[0031] Preferably, the upper cover 8 is provided with a screw mounting seat 12 and a second locking screw 13 installed in the screw mounting seat 12. After the upper cover 8 is covered with the socket housing 5, the second locking screw 13 is tightened with the plug housing 3 to fix it. Through the above structure, the plug can be disassembled more conveniently and safely. When the second locking screw 13 is loosened, the upper cover 8 automatically pops up under the action of the first spring 9, and the shorting piece 10 is disconnected synchronously with the signal terminal 11, and the power is immediately cut off to ensure the safety of electricity use.

[0032] Preferably, a second spring 14 and a first retaining spring 15 are provided in the screw mounting seat 12. The upper end of the second spring 14 applies pressure to the second locking screw 13 and is stopped by the first retaining spring 15. Through the above structure, the top of the screw mounting seat 12 can be kept exposed at any time, which is convenient for employees to disassemble, and is always fixed on the upper cover 8 and is not easy to lose. A sealing gasket 25 is provided at the upper end of the screw mounting seat 12 to seal with the umbrella-shaped flange of the second locking screw 13.

[0033] Preferably, the current terminal 6 is cylindrical, and its upper end is directly threadedly connected to the first locking screw 7. The upper end surface of the current terminal 6 is formed with an array of point contact surfaces 16 by knurling process to increase the locking bite force and ensure the stability and reliability of the current connection.

[0034] Preferably, the front end of the plug housing 3 is provided with a plug front rubber core 17, and the rear end is provided with a plug rear rubber core 18, and the plug rear rubber core 18 is connected to the plug front rubber core 17 through the front end connection buckle 19. Through the cooperation of the plug front rubber core 17 and the plug rear rubber core 18, the adapter row 4, the first locking screw 7 and the cable welded to the adapter row 4 are arranged in the plug front rubber core 17 and the plug rear rubber core 18, and are insulated and sealed from the outside. The socket housing 5 is provided with a socket rubber core 31, and the socket rubber core 31 is sealed with the socket housing 5 through the socket rubber core sealing ring 32. The current terminal 6 is sealed with the socket rubber core 31 through the current terminal sealing ring 35. The signal line is sealed with the socket rubber core 31 through the signal line plug 33. The end face of the socket housing 5 is sealed with the installation surface through the end face sealing ring 34. Finally, the socket housing 5 is fixed by arranging a socket rear cover 39 at the end. Through the above structure, after the socket is installed and fixed, it meets the one-way waterproof requirement and effectively protects the high-value objects inside the installation surface.

[0035] Preferably, a shielding cover 20 and a shielding ring 21 are provided at the rear end of the plug housing 3. The front end of the shielding cover 20 is sleeved on the rear end of the plug rear rubber core 18, and the shielding ring 21 is sleeved on the rear end of the shielding cover 20. The side wall of the shielding cover 20 is provided with a group of elastic contact pins 22 in contact with the plug housing 3. The shielding ring 21 is crimped by a clamp to connect the shielding cover 20 with the cable shielding wire, and finally the cable shielding layer is connected with the plug housing 3 to achieve 360-degree annular shielding with high shielding efficiency. Finally, a sealing body 36 and a tail cover 37 are also provided at the rear end of the plug housing 3 to seal and fix the cable. An interface sealing ring 38 is provided at the front end of the plug housing 3 to seal.

[0036] Preferably, an insulating cap 23 is provided on the top of the first locking screw 7. The insulating cap 23 is processed by rubber coating to avoid electrical injuries to personnel caused by power during disassembly under maintenance. To prevent the first locking screw 7 from loosening, a second retaining spring 40 is provided on the first locking screw 7.

[0037] Preferably, an upper cover sealing ring 24 which is sealingly matched with the upper cover 8 is installed on the upper end of the socket housing 5 .

[0038] The above does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of the structure and technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A high current connector, comprising a plug (1) and a socket (2) for mating, characterized in that: The plug (1) comprises a plug housing (3) and an adapter row (4) arranged in the plug housing (3); the socket (2) comprises a socket housing (5) and a current terminal (6) arranged in the socket housing (5); after the plug (1) and the socket (2) are plugged into each other, the adapter row (4) is connected to the current terminal (6) via a first locking screw (7) at the front end; an upper cover (8) is hingedly connected to the upper end of the plug housing (3); a first spring (9) is provided at the hinge; and a spring (9) is provided at the lower end of the upper cover (8). A shorting piece (10) is provided in the socket (2), and at least two signal terminals (11) are provided in the socket (2). The signal terminals (11) are crimped with signal lines and connected to a power management system. When the upper cover (8) is closed, the shorting piece (10) short-circuits the two signal terminals (11). When the upper cover (8) is opened, the shorting piece (10) moves away from the signal terminals (11) to disconnect the two signal terminals (11). The power management system automatically cuts off the power supply to the socket (2) according to the disconnection signal.

2. The high current connector according to claim 1, characterized in that: The upper cover (8) is provided with a screw mounting seat (12) and a second locking screw (13) mounted in the screw mounting seat (12); after the upper cover (8) is covered with the socket housing (5), the second locking screw (13) is tightened with the plug housing (3) to fix them.

3. The high current connector according to claim 2, characterized in that: A second spring (14) and a first retaining spring (15) are provided in the screw mounting seat (12).

4. The high current connector according to claim 2, characterized in that: The upper end of the screw mounting seat (12) is provided with a sealing gasket (25) which is in sealing cooperation with the second locking screw (13).

5. The high current connector according to claim 1, characterized in that: The current terminal (6) is cylindrical, and the upper end thereof is directly threadedly connected to the first locking screw (7).

6. The high current connector according to claim 5, characterized in that: The upper end surface of the current terminal (6) is provided with a point contact surface (16) in the form of an array.

7. The high current connector according to claim 1, characterized in that: The front end of the plug housing (3) is provided with a front plug rubber core (17), and the rear end is provided with a rear plug rubber core (18). The rear plug rubber core (18) is connected to the front plug rubber core (17) via a front connection buckle (19). The socket housing (5) is provided with a socket rubber core (31). The socket rubber core (31) is sealed with the socket housing (5) via a socket rubber core sealing ring (32). The current terminal (6) is sealed with the socket rubber core (31) via a current terminal sealing ring (35). The signal line connected to the signal terminal (11) is sealed with the socket rubber core (31) via a signal line plug (33). The end face of the socket housing (5) is sealed with the mounting surface via an end face sealing ring (34).

8. The high current connector according to claim 7, characterized in that: The rear end of the plug housing (3) is provided with a shielding cover (20) and a shielding ring (21); the front end of the shielding cover (20) is sleeved on the rear end of the plug rear rubber core (18); the shielding ring (21) is sleeved on the rear end of the shielding cover (20); and the side wall of the shielding cover (20) is provided with a group of elastic contact pins (22) that are in contact with the plug housing (3).

9. The high current connector according to claim 1, characterized in that: An insulating cap (23) is provided on the top of the first locking screw (7).

10. The high current connector according to claim 1, characterized in that: An upper cover sealing ring (24) which seals with the upper cover (8) is installed at the upper end of the socket housing (5).

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