Terminals for new energy connectors

Abstract

This utility model discloses a terminal for a new energy connector, comprising a cylindrical main body, a mating portion formed at the front end of the main body, a mating portion formed at the rear end of the main body, and a pin portion. The mating portion has a insertion hole that extends rearward through the inner hole of the main body. A circular baffle is punched inward along the outer side of the main body, and the circular baffle is pressed into the interior of the terminal and seals the inner hole. In other words, the circular baffle added to the terminal of this utility model can prevent dust and other foreign objects from entering through the rear end of the inner hole of the main body and moving to the insertion hole of the mating portion at the front end of the terminal, thus affecting the normal conductivity of the terminal; or, when the mounting hole behind the insulating base is sealed with glue later, the glue will not overflow to the front end of the terminal (especially the crown spring part) and affect the normal conductivity of the terminal. After the glue cures, it covers the rear end of the terminal, making the insulating base and the rear end of the terminal seamlessly connected, further enhancing the waterproof effect.

Description

Technical Field

[0001] This utility model relates to the field of connector product technology, and specifically to a terminal for new energy connectors. Background Technology

[0002] Chinese utility model patent application number 202422056123.9 discloses a photovoltaic terminal block, including a female terminal body. A spring arm is fixedly connected to one end of the female terminal body, and a circular socket is fixedly connected to one end of the spring arm. A plug-in post is inserted into the spring arm and the circular socket. A male terminal body is fixedly connected to one end of the plug-in post. A retaining ring is fixedly connected to the ends of both the female and male terminal bodies that are far apart from each other. A claw is provided on the outer surface of the retaining ring, and a rivet cup is fixedly connected to one end of the retaining ring. This photovoltaic terminal block integrates the female terminal body and the spring arm, thus avoiding the need for subsequent reassembly of the spring arm and female terminal body. This design prevents the spring arm from deforming under high pressure during production, effectively preventing spring arm collapse or pull-out problems when the female and male terminals are plugged in. It also avoids problems such as high resistance and excessive temperature rise after the male terminal body contacts the female terminal.

[0003] However, the aforementioned photovoltaic terminal block has the following shortcomings: After the main body of the female terminal block is fixed to the metal core of the conductor by riveting the rivet cup, when the entire photovoltaic terminal block is inserted into the terminal hole of the plastic base to assemble a connector, in order to improve the waterproof performance, glue is poured into the rear end of the terminal hole of the plastic base to seal the rear end of the photovoltaic terminal block and the terminal hole to form a sealed assembly; however, during the glue pouring process, since there is no obstruction structure inside the main body of the female terminal block, there is a risk that the glue / adhesive will overflow to the spring arm. If the glue / adhesive overflows to the spring arm, it will affect the quality of the entire photovoltaic terminal block, and may even lead to the scrapping of the entire photovoltaic terminal block, causing great trouble to the manufacturer.

[0004] In view of the above, the inventors propose the following technical solution. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a terminal for new energy connectors.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The terminal for the new energy connector includes a cylindrical main body, a mating part formed at the front end of the main body, a mating part formed at the rear end of the main body, and a pin part. The mating part has a plug hole that extends rearward through the inner hole of the main body. The main body is punched inward along its outer side to form a circular baffle plate. The circular baffle plate is pressed into the interior of the terminal and seals the inner hole.

[0007] Furthermore, in the above technical solution, the outer edge of the circular baffle plate is also sealed and fixed to the inner wall of the inner hole by welding.

[0008] Furthermore, in the above technical solution, the pin portion includes a first elastic arm and a second elastic arm integrally formed on the main body and spaced apart, a connecting portion integrally connected to the lower end of the first elastic arm and the second elastic arm, and a solder foot integrally formed on the lower end of the connecting portion and smaller in size than the connecting portion for soldering and fixing to the PCB board.

[0009] Furthermore, in the above technical solution, both the first elastic arm and the second elastic arm are U-shaped or J-shaped; the solder foot is provided with a solder-receiving hole that passes through the front and rear end faces, and the front and rear end faces of the solder foot are also provided with solder-receiving grooves.

[0010] Furthermore, in the above technical solution, the outer periphery of the rear end of the terminal is provided with an outwardly protruding anti-rotation protrusion. After the terminal is inserted into the mounting hole of the insulating base, the anti-rotation protrusion is embedded in the anti-rotation groove provided on the inner wall of the mounting hole.

[0011] Furthermore, in the above technical solution, an anti-retraction piece is fixed around the terminal, and the anti-retraction piece is formed into multiple outwardly protruding elastic cards.

[0012] Furthermore, in the above technical solution, the anti-retraction piece is a non-closed ring, which is installed in the annular groove around the terminal. The wall thickness of the anti-retraction piece is less than or equal to the depth of the annular groove, and the elastic card protrudes obliquely from the periphery of the terminal.

[0013] Furthermore, in the above technical solution, the outer surface of the elastic card is formed with reinforcing ribs, and the reinforcing ribs extend to the surface of the anti-retraction sheet.

[0014] Furthermore, in the above technical solution, the bottom of the annular groove is provided with a through hole that connects the inner hole and the insertion hole and is used for venting; both ends of the anti-retraction piece are formed with rivet plates, which are inserted into the through hole at the bottom of the annular groove and then riveted to the inner wall of the through hole to fix the anti-retraction piece in the annular groove.

[0015] Furthermore, in the above technical solution, a crown spring is provided on the inner wall of the insertion hole of the terminal, and multiple limiting protrusions are stamped from the outside to the inside around the docking part, with the rear end of the crown spring abutting against the limiting protrusions.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention forms a circular baffle plate by punching inward along the outer side of the main body. The circular baffle plate is pressed into the interior of the terminal and seals the inner hole. The circular baffle plate can prevent dust and other foreign objects from entering through the rear end of the inner hole of the main body of the terminal and moving to the insertion hole of the front end of the terminal, thus affecting the normal conductivity of the terminal; or, when the mounting hole behind the insulating base is sealed with glue later, the glue will not overflow to the front end of the terminal (especially the crown spring part) and affect the normal conductivity of the terminal. After the glue cures, it covers the rear end of the terminal, so that the insulating base and the rear end of the terminal form a seamless connection, further enhancing the waterproof effect. Attached Figure Description

[0017] Figure 1 This is a perspective view of the new energy connector including this utility model; Figure 2 This is a perspective view of the new energy connector including this utility model from another angle; Figure 3 This is an exploded view of the new energy connector that includes this utility model; Figure 4 This is a cross-sectional view of the insulating base in the new energy connector that includes this utility model; Figure 5 This is a perspective view of the new energy connector including this utility model after the protective cover has been installed; Figure 6 This is a perspective view of the protective cover in the new energy connector that includes this utility model; Figure 7 This is a perspective view of the present invention; Figure 8 This is a perspective view of the present invention from another angle; Figure 9 This is a perspective view of the anti-retraction sheet in this utility model; Figure 10 This is a perspective view of the crown spring in this utility model; Figure 11 This is a perspective view of a wire-end connector adapted to the new energy connector including this utility model. Detailed Implementation

[0018] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0019] See Figure 1-11As shown, a new energy connector incorporating this utility model includes an insulating base 1 and terminals 2 inserted and fixed in the insulating base 1. The front end of the insulating base 1 is formed with an outer plug tube 11 and an inner plug tube 12 located in the outer plug tube 11. In this embodiment, there are two inner plug tubes 12 and two terminals 2, with one terminal 2 corresponding to one inner plug tube 12. Of course, in some other embodiments, the number of inner plug tubes 12 and terminals 2 can be set to one to meet different usage requirements.

[0020] A slot 10 is formed between the inner wall of the outer plug-in cylinder 11 and the outer wall of the inner plug-in cylinder 12. The inner wall of the slot 10 is also formed with a foolproof positioning groove 101. The wire end connector 4 is provided with a protruding rib 41 that matches the foolproof positioning groove 101. When the wire end connector 4 is plugged into the outer plug-in cylinder 11, the protruding rib 41 and the foolproof positioning groove 101 are plugged into each other to achieve positioning and limit the only plugging direction, thus achieving the effect of foolproofing. The inner plug-in cylinder 12 has a plug-in hole 121 into which the terminal 2 is inserted. The front end of the insulating base 1 is also formed with two buckles 13, which are located on both sides of the outer plug-in cylinder 11. The wire end connector 4 is provided with a locking slot 42 that matches the buckle 13. After the wire end connector 4 is plugged into the outer plug-in cylinder 11, the buckle 13 and the locking slot 42 are plugged into and locked, so that the wire end connector 4 and the insulating base 1 are stably assembled and prevent accidental disengagement.

[0021] To achieve waterproofing after the line connector 4 and the insulating base 1 are mated, the following design is also made: an annular groove 111 is provided at the rear end of the outer mating sleeve 11. A sealing ring 14 is fixed in the annular groove 111 by means of sleeve or secondary injection molding. The outer periphery of the sealing ring 14 protrudes beyond the outer surface of the outer mating sleeve 11 to form a sealed assembly with the inner wall of the line connector 4 that is mated with the outer mating sleeve 11, thereby achieving waterproofing.

[0022] The sealing ring 14 has at least two spaced sealing ribs 141 formed on its exterior, so that the sealing ring 14 can form two waterproof structures with the wire connector 4, resulting in better waterproof performance.

[0023] The new energy connector also includes a protective sleeve 3, which has a locking hole 31 that matches the snap fastener 13. When the new energy connector is not in use, the protective sleeve 3 is placed over the outer mating sleeve 11, and the snap fastener 13 and the locking hole 31 are engaged and locked, so that the protective sleeve 3 is fixedly covering the front end of the insulating base 1, preventing dust and other foreign objects from entering the mating slot 10 and mating hole 121, thereby protecting the structure of the new energy connector. The inner wall of the protective sleeve 3 also contacts the sealing ring 14 to form a sealed assembly, thereby achieving a waterproof function. When the new energy connector needs to be used, the protective sleeve 3 can be directly removed.

[0024] The terminal 2 includes a cylindrical main body 28, a docking portion 29 formed at the front end of the main body 28, a docking portion 29 formed at the rear end of the main body 28, and a pin portion 27. The docking portion 29 has a plug hole 291 that extends rearward through the inner hole 281 of the main body 28.

[0025] The insulating base 1 has a mounting hole 15 that communicates with the mating hole 121 along its rear end face. The inner wall of the mounting hole 15 is provided with an anti-rotation groove 151. The rear end periphery of the terminal 2 is provided with an outwardly protruding anti-rotation protrusion 21. When the terminal 2 is inserted into the mating hole 121 along the mounting hole 15, the anti-rotation protrusion 21 is embedded in the anti-rotation groove 151, thereby preventing the terminal 2 from rotating in the mounting hole 15 and ensuring that the terminal 2 is more stably installed in the insulating base 1.

[0026] The inner wall of the insertion hole 121 is formed with multiple aligning ribs 122 evenly distributed around the circumference. The aligning ribs 122 extend along the length of the insertion hole 121, and the inner side of the aligning ribs 122 is set as arc-shaped. The inner side of the aligning ribs 122 contacts the outer surface of the cylindrical terminal 2, thereby achieving multi-point contact, which can form a stable support for the terminal 2 and maintain its alignment, that is, ensure that the terminal 2 is not eccentric and improve product quality.

[0027] To prevent the terminal 2 from accidentally retracting after being installed in the mating hole 121, the following design is implemented: A protruding boss 16 is formed at the mating portion of the mounting hole 15 and the mating hole 121. A stepped groove 161 is formed between the front end of the boss 16 and the inner wall of the mating hole 121, and an inclined guide surface 162 is formed between the rear end of the boss 16 and the inner wall of the mounting hole 15. An anti-retraction piece 22 is fixed around the terminal 2. Specifically, the anti-retraction piece 22 is located outside the main body 29. The anti-retraction piece 22 has multiple outwardly protruding elastic clips 221. These elastic clips 221 are guided and compressed by the inclined guide surface 162, passing over the boss 16 and engaging with the stepped groove 161 for positioning. This ensures that the terminal 2 will not accidentally retract, improving product quality.

[0028] The anti-retraction piece 22 is a non-closed ring shape, which is installed in the annular groove 23 around the terminal 2, making it easy to install. The anti-retraction piece 22 has a wall thickness less than or equal to the depth of the annular groove 23, so that it does not affect the normal insertion of the terminal into the mounting hole 15 and the insertion hole 121. Only the elastic card 221 protrudes obliquely from the periphery of the terminal 2, and the outer surface of the elastic card 221 is formed with reinforcing ribs 222, which extend to the surface of the anti-retraction piece 22. This increases the strength of the elastic card 221, so that the elastic card 221 can generate an elastic force in the opposite direction after being compressed, thereby achieving a reset. Both ends of the anti-retraction piece 222 are formed with rivet plates 223. The rivet plates 223 are inserted into the through hole 231 at the bottom of the annular groove 23 and are riveted to the inner wall of the through hole 231, so that the anti-retraction piece 22 is fixed in the annular groove 23. Its installation structure is stable and there is no phenomenon of the anti-retraction piece 22 moving in the annular groove 23, thus improving the quality of the product.

[0029] To improve contact stability and electrical conductivity, the following design is implemented: Terminal 2 is cylindrical, with a crown spring 24 on its inner front wall. After the conductor 43 in the wire connector 4 is inserted into terminal 2, the conductor 43 passes through the core of the crown spring 24 and is clamped by the crown spring 24 to achieve stable contact and ensure good electrical conductivity. Furthermore, multiple limiting protrusions 25 are stamped from the outside in around the periphery of terminal 2, i.e., multiple limiting protrusions 25 are stamped from the outside in around the mating part 29. The rear end of the crown spring 24 abuts against the limiting protrusions 25, thereby preventing the crown spring 24 from retracting during the insertion process with the conductor 43, thus improving product quality.

[0030] A circular baffle plate 26 is formed by punching inward from the outside of the terminal 2. Specifically, the circular baffle plate 26 is formed by punching inward from the outside of the main body 28. The circular baffle plate 26 is pressed into the interior of the terminal 2 and seals the inner hole 281. The circular baffle plate 26 can prevent dust and other foreign objects from entering through the rear end of the inner hole 281 of the main body 28 in the terminal 2 and moving to the insertion hole 291 of the front mating part 29 of the terminal 2, thus affecting the normal conductivity of the terminal 2. Alternatively, when the mounting hole 15 behind the insulating base 1 is sealed with glue later, the glue will not overflow to the front end of the terminal 2 (especially the crown spring part) and affect the normal conductivity of the terminal 2. After the glue cures, it covers the rear end of the terminal 2, so that the insulating base 1 and the rear end of the terminal 2 form a seamless connection, further enhancing the waterproof effect.

[0031] The outer edge of the circular baffle plate 26 is also sealed and fixed to the inner wall of the inner hole 281 by welding, which not only achieves stable support, but also improves the sealing performance.

[0032] The terminal 2 has an integrally formed first elastic arm 271 and second elastic arm 272 spaced apart at its rear end, a connecting portion 273 integrally connected to the lower ends of the first elastic arm 271 and second elastic arm 272, and a solder foot 274 integrally formed at the lower end of the connecting portion 273, smaller in size than the connecting portion 273, for soldering and fixing to the PCB board. In actual use, the connecting portion 273 and the solder foot 274 at its lower end can generate a front-back displacement relative to the main body 111 through the first elastic arm 271 and second elastic arm 272, so that it has tolerance capability and can be inserted into the PCB board more smoothly. At the same time, after the solder foot 274 is inserted into the PCB board, the first elastic arm 271 and second elastic arm 272 are both in the front-back direction and / or up-down direction of elastic deformation, so that the solder foot 274 can be driven to be stably inserted into the pad on the PCB board, ensuring the stability of the insertion and facilitating subsequent soldering and fixing. The solder foot 274 is provided with a solder-receiving hole 275 that extends through the front and rear ends, and a solder-receiving groove 276 is also provided on both the front and rear ends of the solder foot 274. After the solder foot 274 is soldered to the PCB board, the solder will enter the solder-receiving hole 275 and the solder-receiving groove 276, thereby improving the soldering quality, making the solder foot 274 stably positioned on the PCB board, and ensuring the conductivity quality. In addition, since the size of the solder foot 274 is smaller than that of the connecting part 273, after the solder foot 274 is inserted into the PCB board, the lower end of the connecting part 273 abuts against the PCB board. This can prevent the solder foot 274 from being over-inserted into the PCB board, thus preventing the part of the solder foot 274 with the solder-receiving hole 275 and the solder-receiving groove 276 from passing through the PCB board and failing to be fixed with the solder, thereby ensuring the soldering quality.

[0033] In this embodiment, the first elastic arm 271 and the second elastic arm 272 are both U-shaped or J-shaped, which enable the welding foot 274 to move smoothly in the back and forth direction. At the same time, the first elastic arm 271 and the second elastic arm 272 can also provide the welding foot 274 with a downward elastic force.

[0034] In practical use, the insulating base 1 has a groove 17 around its periphery for fitting a sealing gasket to form a sealed assembly with the housing. The new energy connector forms a sealed assembly with the housing through the sealing gasket, with only the outer insertion sleeve 11 protruding from the housing for mating with the wire connector 4. The rear side of the insulating base 1 has a positioning foot 18 for insertion and fixing into the positioning holes on the PCB board. This positioning foot 18 is located around the solder foot 274, and the lower ends of both the positioning foot 18 and the solder foot 274 extend downwards, allowing them to be inserted into the PCB board from top to bottom for positioning. This enables the new energy connector to be a horizontal connector, stably mounted on the PCB board, forming a stable assembly.

[0035] In summary, this utility model features a circular baffle plate 26 formed by punching the main body 28 inward from its outer side. This circular baffle plate 26 is pressed into the interior of the terminal 2 and seals the inner hole 281. The circular baffle plate 26 can prevent dust and other foreign objects from entering through the rear end of the inner hole 281 of the main body 28 in the terminal 2 and moving to the insertion hole 291 of the front end mating part 29 of the terminal 2, thus affecting the normal conductivity of the terminal 2. Alternatively, when the mounting hole 15 behind the insulating base 1 is sealed with glue later, the glue will not overflow to the front end of the terminal 2 (especially the crown spring part) and affect the normal conductivity of the terminal 2. After the glue cures, it covers the rear end of the terminal 2, so that the insulating base 1 and the rear end of the terminal 2 form a seamless connection, further enhancing the waterproof effect.

[0036] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A terminal for a new energy connector, the terminal (2) comprising a cylindrical body portion (28), a mating portion (29) formed at the front end of the body portion (28), a mating portion (29) formed at the rear end of the body portion (28), and a pin portion (27), the mating portion (29) having a insertion hole (291) that extends rearward through the inner hole (281) of the body portion (28), characterized in that: The main body (28) is punched inward along its outside to form a circular baffle (26), which is pressed into the inside of the terminal (2) and seals the inner hole (281).

2. The terminal for a new energy connector according to claim 1, characterized in that: The outer edge of the circular baffle plate (26) and the inner wall of the inner hole (281) are also sealed and fixed by welding.

3. The terminal for a new energy connector according to claim 1, characterized in that: The pin portion (27) includes a first elastic arm (271) and a second elastic arm (272) integrally formed on the main body portion (28) and spaced apart, a connecting portion (273) integrally connected to the lower end of the first elastic arm (271) and the second elastic arm (272), and a solder foot (274) integrally formed on the lower end of the connecting portion (273) and smaller in size than the connecting portion (273) for soldering and fixing to the PCB board.

4. The terminal for a new energy connector according to claim 3, characterized in that: The first elastic arm (271) and the second elastic arm (272) are both U-shaped or J-shaped; the solder foot (274) is provided with a solder-receiving hole (275) that passes through the front and rear end faces, and the front and rear end faces of the solder foot (274) are also provided with solder-receiving grooves (276).

5. The terminal for a new energy connector according to claim 1, characterized in that: The terminal (2) has an outwardly protruding anti-rotation protrusion (21) on its rear periphery. After the terminal (2) is inserted into the mounting hole (15) of the insulating base (1), the anti-rotation protrusion (21) is embedded in the anti-rotation groove (151) provided on the inner wall of the mounting hole (15).

6. The terminal for a new energy connector according to any one of claims 1-5, characterized in that: The terminal (2) is fixed with an anti-retraction piece (22) on its periphery. The anti-retraction piece (22) is formed with multiple outwardly protruding elastic cards (221).

7. The terminal for a new energy connector according to claim 6, characterized in that: The anti-retraction piece (22) is a non-closed ring and is installed in the annular groove (23) around the terminal (2). The wall thickness of the anti-retraction piece (22) is less than or equal to the depth of the annular groove (23). The elastic card (221) protrudes obliquely from the periphery of the terminal (2).

8. The terminal for a new energy connector according to claim 6, characterized in that: The outer surface of the elastic card (221) is formed with reinforcing ribs (222), and the reinforcing ribs (222) extend to the surface of the anti-retraction sheet (22).

9. The terminal for a new energy connector according to claim 7, characterized in that: The bottom of the annular groove (23) is provided with a through hole (231) for venting, which connects the inner hole (281) and the insertion hole (291); both ends of the anti-retraction piece (22) are formed with rivet plates (223). The rivet plates (223) are inserted into the through hole (231) at the bottom of the annular groove (23) and then riveted to the inner wall of the through hole (231) to fix the anti-retraction piece (22) in the annular groove (23).

10. The terminal for a new energy connector according to any one of claims 1-5, characterized in that: The inner wall of the insertion hole (291) of the terminal (2) is provided with a crown spring (24), and the outer periphery of the mating part (29) is stamped with multiple limiting protrusions (25) from the outside to the inside. The rear end of the crown spring (24) abuts against the limiting protrusions (25).

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