A replaceable fuse direct current charging gun

Abstract

This utility model relates to the field of charging gun technology and discloses a DC charging gun with a replaceable fuse, including a gun body; a fuse terminal assembly detachably installed in the gun body, the fuse terminal assembly including a terminal and a tail pin, and a fuse disposed between the terminal and the tail pin; and a wiring socket installed in the gun body, the wiring end of the wiring socket being connected to a cable, and the tail pin being inserted into the wiring socket to make the terminal conductive with the cable. The purpose of this utility model is to provide a DC charging gun with a replaceable fuse to solve the problem of cumbersome operation and high cost caused by the need to replace the entire wiring harness after a short circuit protection failure in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of charging gun technology, specifically to a DC charging gun with a replaceable fuse. Background Technology

[0002] Low-power DC charging guns pose a risk of burnout due to instantaneous high current. Therefore, fuses are required in the internal wiring of the charging gun to provide short-circuit protection during use. However, fuses are disposable products. In existing charging guns, if a short circuit occurs, the charging wire becomes unusable, requiring the replacement of the entire charging gun wiring harness. This process is cumbersome and incurs high material and labor costs. Utility Model Content

[0003] This utility model provides a DC charging gun with a replaceable fuse, which solves the problem of cumbersome operation and high cost caused by the need to replace the entire wiring harness after a short circuit occurs in the prior art.

[0004] To solve the above-mentioned technical problems, this utility model provides a DC charging gun with a replaceable fuse, including a gun body; a fuse terminal assembly detachably installed in the gun body, the fuse terminal assembly including a terminal and a tail pin, and a fuse disposed between the terminal and the tail pin; a wiring socket installed in the gun body, the wiring end of the wiring socket being connected to a cable, and the tail pin being inserted into the wiring socket to make the terminal and the cable conduction.

[0005] The DC charging gun with a replaceable fuse provided in the above embodiment provides short-circuit protection through a fuse terminal assembly consisting of terminals, fuses, and tail pins. Connection and disconnection are achieved by inserting and removing the tail pins. When short-circuit protection occurs, only the fuse terminal assembly needs to be removed and replaced, without having to replace the entire gun cable. The operation is simple and saves material and labor costs.

[0006] As an improvement, the tail pin includes a connector and a first rivet cap, the terminal is provided with a second rivet cap, and both ends of the fuse are provided with rivet heads, which are respectively riveted into the first rivet cap and the second rivet cap. Its function is to ensure that the two ends of the fuse maintain sufficient contact with the terminal and the connector through riveting, thereby guaranteeing conductivity.

[0007] As an improvement, a waterproof ring fixing groove is provided on the outer circumference of the terminal, and a waterproof ring is installed in the fixing groove. Several outwardly protruding ribs are provided on the outer circumference of the waterproof ring. Its function is to prevent external liquid from entering the charging gun through the installation gap of the fuse terminal assembly.

[0008] As an improvement, the gun body includes a plug and a terminal plate. The plug has a terminal mounting hole, and the terminal plate has a space for accommodating the fuse. The wiring socket is installed at one end of the terminal plate. Its function is to facilitate the installation of the fuse terminal assembly and its connection to the wiring socket.

[0009] As an improvement, a fixing groove is provided on the outer circumference of the wiring socket, and a fixing slot is provided on the terminal pressure plate, which engages with the fixing groove. Its function is to enable quick installation and positioning of the wiring socket.

[0010] As an improvement, a second threaded hole is provided on the terminal, and a through hole is provided on the plug. The terminal is fixed by a second fixing screw. Its function is to position the fuse terminal assembly using the second fixing screw.

[0011] As another improvement, a positioning groove is formed on the outer circumference of the terminal, and a slot is formed on the plug. A terminal card is installed in the slot, and a retaining groove is formed on the terminal card so that the terminal card can be engaged into the positioning groove. Its function is to position the fuse terminal assembly by means of the terminal card.

[0012] As an improvement, the terminal card is provided with a first disassembly groove and a second disassembly groove. After the terminal card is inserted into the positioning groove, the second disassembly groove is located inside the terminal mounting hole. When the second disassembly groove moves outward to be close to the inner wall of the terminal mounting hole, the first disassembly groove is located outside the plug. Its function is to facilitate the disassembly of the terminal card.

[0013] As an improvement, the plug has a first threaded hole that radially communicates with the slot. A notch is provided on the terminal card near the first threaded hole, and a first fixing screw is installed inside the first threaded hole, with the bottom of the first fixing screw abutting against the inner wall of the notch. Its function is to limit the position of the terminal card using the first fixing screw.

[0014] As an improvement, the plug has a groove that covers the slot and the first threaded hole, and a sticker is attached to the groove. Its purpose is to cover the slot and the first threaded hole with the sticker, making the charging gun more aesthetically pleasing.

[0015] In combination with the above technical solutions, compared with the prior art, the embodiments of this utility model have at least the following beneficial effects: 1. This utility model embodiment modularly disassembles and reassembles the fuse terminal assembly, which consists of the fuse, terminals, and tail pins. After a short circuit occurs, only the fuse terminal assembly needs to be removed and replaced, instead of replacing the entire gun wire. This simplifies the operation and reduces material and labor costs. 2. In this embodiment of the utility model, the connection between the terminal and the cable is achieved by inserting the tail pin into the connection hole. The connection method is simple and the disassembly is convenient.

[0016] 3. In this embodiment of the utility model, the fuse terminal assembly and wiring socket are positioned by the terminal clamping plate to ensure that the fuse terminal assembly can be accurately connected to the wiring socket. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the first embodiment of a DC charging gun with a replaceable fuse according to the present invention.

[0018] Figure 2 yes Figure 1 A magnified view of a portion of position A in the diagram.

[0019] Figure 3 This is an exploded view of the fuse terminal assembly in the first embodiment of a DC charging gun with a replaceable fuse according to this utility model.

[0020] Figure 4 This is a schematic diagram showing the position of the second disassembly slot within the terminal mounting hole in the first embodiment of the DC charging gun with a replaceable fuse according to this utility model.

[0021] Figure 5 This is a schematic diagram of the installation position of the fuse terminal assembly inside the gun body in the first embodiment of the DC charging gun with replaceable fuse according to this utility model.

[0022] Figure 6 This is a schematic diagram of the second embodiment of a DC charging gun with a replaceable fuse according to the present invention.

[0023] Figure 7 This is an exploded view of the fuse terminal assembly in a second embodiment of a DC charging gun with a replaceable fuse according to this utility model.

[0024] Figure 8 This is a schematic diagram of the installation position of the fuse terminal assembly inside the gun body in a second embodiment of the DC charging gun with replaceable fuses according to this utility model.

[0025] Wherein: 1-sticker, 2-first fixing screw, 3-terminal card, 31-first disassembly groove, 32-second disassembly groove, 33-card slot, 34-notch, 4-gun body, 41-wiring socket, 411-fixing groove, 412-cable crimping hole, 42-terminal pressure plate, 421-fixing slot, 43-plug, 431-terminal mounting hole, 432-slot, 433-first threaded hole, 434-groove, 5-fuse terminal assembly, 51-tail pin, 511-first rivet cap, 512-connector, 52-fuse, 521-rivet head, 53-terminal, 531-positioning groove, 532-waterproof ring fixing groove, 533-second rivet cap, 534-second threaded hole, 54-waterproof ring, 541-rib, 6-second fixing screw. Detailed Implementation

[0026] To illustrate the technical features, objectives, and effects of this utility model in detail, the following description, in conjunction with the accompanying drawings and embodiments, provides a further detailed explanation. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0027] Please see the appendix Figure 1-5 The first embodiment of this utility model provides a DC charging gun with a replaceable fuse, including a gun body 4; a fuse terminal assembly 5, detachably installed in the gun body 4, the fuse terminal assembly 5 including a terminal 53 and a tail pin 51, and a fuse 52 disposed between the terminal 53 and the tail pin 51; and a wiring socket 41 installed in the gun body 4, the wiring end of the wiring socket 41 being connected to a cable (not shown in the figure), and the tail pin 51 being inserted into the wiring socket 41 to make the terminal 53 conduct with the cable. Exemplarily, one end of the wiring socket 41 is provided with a cable crimping hole 412 to facilitate cable connection.

[0028] In the above embodiment, the fuse 52 is embedded between the terminal 53 and the tail pin 51 to form a fuse terminal assembly 5 for easy modular assembly and disassembly. Connection and disassembly are performed by inserting and removing the tail pin 51. The operation is simple. When the charging gun is short-circuited, only the fuse terminal assembly 5 needs to be removed and replaced. It is not necessary to replace the entire charging gun cable, thereby saving material and labor costs.

[0029] Based on the above embodiments, the tail pin 51 includes a connector 512 and a first rivet cap 511, the terminal 53 is provided with a second rivet cap 533, and the fuse 52 has rivet heads 521 at both ends. The rivet heads 521 at both ends of the fuse 52 are respectively riveted into the first rivet cap 511 and the second rivet cap 533. By using a riveting method for connection, the two ends of the fuse 52 can maintain sufficient contact with the terminal 53 and the connector 512 respectively, ensuring the conduction effect.

[0030] Based on the above embodiment, a waterproof ring fixing groove 532 is provided on the outer circumference of the terminal 53, and a waterproof ring 54 is installed in the waterproof ring fixing groove 532. Several outwardly protruding ribs 541 are provided on the outer circumference of the waterproof ring 54. The waterproof ring 54 can prevent external liquid from entering the charging gun through the installation gap of the fuse terminal assembly 5, and the ribs 541 can further increase the waterproofness.

[0031] Based on the above embodiments, the gun body 4 includes a plug 43 and a terminal pressure plate 42. The plug 43 has a terminal mounting hole 431, and the terminal pressure plate 42 has a space for accommodating the fuse 52. The wiring socket 41 is installed at one end of the terminal pressure plate 42. During installation, the fuse terminal assembly 5 enters the gun body through the terminal mounting hole 431 until the insertion part 512 of the tail pin 51 is inserted into the wiring socket 41. At this time, the fuse 52 is located inside the terminal pressure plate 42, and the waterproof ring 54 is sealed with the inner ring of the terminal mounting hole 431 to achieve waterproofing.

[0032] Based on the above embodiments, a fixing groove 411 is provided on the outer circumference of the wiring socket 41, and a fixing slot 421 is provided on the terminal pressure plate 42. During installation, the fixing slot 421 is inserted into the fixing groove 411 to achieve quick installation of the wiring socket.

[0033] Based on the above embodiments, a positioning groove 531 is formed on the outer circumference of the terminal 53, and a slot 432 is formed on the plug 43. A terminal card 3 is installed in the slot 432, and a slot 33 is formed on the terminal card 3 so that the terminal card 3 can be inserted into the positioning groove 531. During installation, simply insert the terminal card 3 into the slot 432 so that the slot 33 is inserted into the positioning groove 531 to complete the positioning of the terminal 53, ensuring the accuracy of the installation position of the fuse terminal assembly 5.

[0034] Based on the above embodiments, the terminal card 3 has a first disassembly groove 31 and a second disassembly groove 32. After the terminal card 3 is inserted into the positioning groove 531, the second disassembly groove 32 is located inside the terminal mounting hole 431. When the second disassembly groove 32 moves outward to be close to the inner wall of the terminal mounting hole 431, the first disassembly groove 31 is located outside the plug 43. During disassembly, the terminal card 3 is pushed outward through the second disassembly groove 32. When the second disassembly groove 32 is close to the inner wall of the terminal mounting hole 431, the first disassembly groove 31 is exposed. At this time, a tool such as a flathead screwdriver can be inserted into the first disassembly groove 31 to pull the terminal card 3 outward, thereby completing the disassembly. Using the terminal card 3 to position the terminal 53 simplifies the processing procedure of the terminal 53 while ensuring the positioning effect.

[0035] Based on the above embodiments, the plug 43 is provided with a first threaded hole 433, which is radially connected to the slot 432. The terminal card 3 is provided with a notch 34 on the side near the first threaded hole 433. A first fixing screw 2 is installed in the first threaded hole 433. The bottom of the first fixing screw 2 abuts against the inner wall of the notch 34 to limit the terminal card 3 and prevent the terminal card 3 from loosening.

[0036] Based on the above embodiments, a groove 434 is provided on the plug 43, the groove 434 covers the slot 432 and the first threaded hole 433, and a sticker 1 is attached to the groove 434, so that the charging gun has a simpler and more beautiful appearance.

[0037] Please see the appendix Figure 6-8 The second embodiment of this utility model provides a DC charging gun with a replaceable fuse. The difference between this and the first embodiment is that the positioning method of the terminal 53 is different. In this embodiment, the terminal 53 is provided with a second threaded hole 534, the plug 43 is provided with a through hole 435, and the terminal 53 is fixed by a second fixing screw 6. The positioning of the terminal 53 is achieved by the cooperation of the second fixing screw 6 and the second threaded hole 534.

[0038] The present invention and its embodiments have been described in detail above. This description is not restrictive, and the accompanying drawings only show some embodiments of the present invention. The actual structure is not limited thereto. Those skilled in the art, inspired by this description, can make various modifications, improvements, and substitutions without departing from the concept of the present invention, and all of these should fall within the protection scope of the present invention.

Claims

1. A replaceable fuse DC charging gun, characterized in that, include: Gun body; A fuse terminal assembly is detachably mounted in the gun body, the fuse terminal assembly including a terminal and a tail pin, and a fuse disposed between the terminal and the tail pin; A wiring socket is installed inside the gun body. The wiring terminal of the wiring socket is connected to a cable. The tail pin is inserted into the wiring socket to make the terminal connected to the cable.

2. The DC charging gun with replaceable fuses according to claim 1, characterized in that: The tail pin includes a connector and a first rivet cap, the terminal is provided with a second rivet cap, and the fuse is provided with rivet heads at both ends, the rivet heads being respectively riveted into the first rivet cap and the second rivet cap.

3. The DC charging gun with replaceable fuses according to claim 1, characterized in that: The terminal has a waterproof ring fixing groove on its outer circumference, and a waterproof ring is installed in the waterproof ring fixing groove. The outer circumference of the waterproof ring is provided with several rings of outwardly protruding ribs.

4. The DC charging gun with replaceable fuses according to claim 1, characterized in that: The gun body includes a plug and a terminal pressure plate. The plug has a terminal mounting hole, and the terminal pressure plate has a space for accommodating the fuse. The wiring socket is installed at one end of the terminal pressure plate.

5. The DC charging gun with replaceable fuses according to claim 4, characterized in that: The outer circumference of the wiring socket is provided with a fixing groove, and the terminal pressure plate is provided with a fixing slot, which is engaged in the fixing groove.

6. The DC charging gun with replaceable fuses according to claim 4, characterized in that: The terminal has a second threaded hole, the plug has a through hole, and the terminal is fixed by a second fixing screw.

7. The DC charging gun with replaceable fuses according to claim 4, characterized in that: The terminal has a positioning groove on its outer circumference, the plug has a slot, a terminal card is installed in the slot, and the terminal card has a slot so that the terminal card can be inserted into the positioning groove.

8. The DC charging gun with replaceable fuse according to claim 7, characterized in that: The terminal card has a first disassembly groove and a second disassembly groove. After the terminal card is inserted into the positioning groove, the second disassembly groove is located inside the terminal mounting hole. When the second disassembly groove moves outward to be close to the inner wall of the terminal mounting hole, the first disassembly groove is located outside the plug.

9. The DC charging gun with replaceable fuse according to claim 7, characterized in that: The plug has a first threaded hole that is radially connected to the slot. The terminal card has a notch on the side near the first threaded hole. A first fixing screw is installed in the first threaded hole, and the bottom of the first fixing screw abuts against the inner wall of the notch.

10. The DC charging gun with replaceable fuses according to claim 9, characterized in that: The plug has a groove that covers the slot and the first threaded hole, and a sticker is attached to the groove.

Images