Replaceable pin assembly for charging interface of charging gun

Abstract

The invention relates to the field of charging facilities, in particular to a replaceable contact pin assembly for a charging interface of a charging gun, which comprises a charging gun and two electrodes symmetrically mounted in the charging gun, two pin holes are formed in the front end of a gun head of the charging gun in a penetrating manner, and contact pins are coaxially arranged in the two pin holes. The rear ends of the contact pins are attached to the electrodes, rear pin sleeves are coaxially embedded in the positions, close to the rear edges, of the outer surfaces of the contact pins, front pin sleeves are coaxially embedded in the positions, close to the front portions of the rear pin sleeves, of the outer surfaces of the contact pins, ring bodies are coaxially arranged on the outer sides of the two contact pins, and inserting and fixing pieces are arranged between the ring bodies and the gun head of the charging gun. According to the invention, the replacement cost is reduced, the replacement of the contact pin is facilitated, the normal charging is ensured, and the loosening phenomenon between the charging gun and the socket during charging is avoided.

Description

Technical Field

[0001] This invention relates to the field of charging facilities, and more particularly to a replaceable pin assembly for a charging gun charging interface. Background Technology

[0002] In charging gun applications, industrial gateways play a crucial role. As a bridge connecting the charging gun to the backend management system, they are responsible for collecting and transmitting key data such as the charging gun's current, voltage, and engagement status. If the pins experience poor contact due to wear or overheating, the industrial gateway can quickly detect these abnormal signals and send them to the cloud, triggering a safety alarm and effectively preventing electrical accidents.

[0003] The pins on the charging gun are prone to excessive wear after repeated insertions and insertions, requiring replacement for safety reasons to ensure the quality of the charging gun. However, since the pins on existing charging guns are integrated with the gun body, the entire charging gun must be replaced during replacement, resulting in high replacement costs. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a replaceable pin assembly for the charging interface of a charging gun.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a replaceable pin assembly for a charging gun charging interface, comprising a charging gun and two electrodes symmetrically installed inside the charging gun. The front end of the charging gun head has two pin holes, and a pin is coaxially arranged inside each of the two pin holes. The rear end of the pin is attached to the electrode. A rear pin sleeve is coaxially embedded on the outer surface of the pin near the rear edge, and a front pin sleeve is coaxially embedded on the outer surface of the pin near the front of the rear pin sleeve. A ring body is coaxially arranged on the outer side of each of the two pins. A fitting is provided between the ring body and the charging gun head. Two pin fixing ears are symmetrically and elastically installed inside the ring body. The two pin fixing ears are clamped to the outer side of the pins and are attached between the front and rear pin sleeves.

[0006] Preferably, ear brackets are fixedly installed at opposite ends of the two fixed pin ears, and both ear brackets extend through the outer surface of the ring body. The ear brackets slide in conjunction with the ring body. Synchronizing frames are provided above and below the ring body, and the ends of the synchronization frames are fixed to the ear brackets.

[0007] Preferably, the rear part of the charging gun head is hollowed out to form a receiving cavity, the ring body is located inside the receiving cavity, a fixed ring block is embedded between the opposite faces of the two ring bodies, a gear is installed at the rear end of the fixed ring block, an upper toothed plate is meshed on one side of the gear, the end of the upper toothed plate is fixed to the upper synchronization frame, and a lower toothed plate is meshed on the other side of the gear, the end of the lower toothed plate is fixed to the lower synchronization frame.

[0008] Preferably, a connecting shaft is embedded through the inside of the gear, and the end of the connecting shaft is rotatably connected to the fixed ring block. A bearing rod is slidably installed through the inside of the fixed ring block, and a rod cap is coaxially embedded at the upper end of the bearing rod. A clamping spring is wound around the outside of the bearing rod. One end of the clamping spring is fixed to the upper end of the fixed ring block, and the other end of the clamping spring is fixed to the lower end of the rod cap. The timing frame below is embedded in the outer surface of the bearing rod.

[0009] Preferably, a pull post is coaxially embedded at the lower end of the bearing rod, a through groove is formed at the lower end of the receiving cavity, the through groove extends to the lower end of the charging gun head, the pull post passes through the inside of the through groove, a splicing post is slidably installed inside the pull post, the splicing post extends out from the lower end of the pull post, a pull ring is fixedly installed at the lower end of the splicing post, a locking pin extends from the outer surface of the splicing post, an L-shaped groove is formed at the lower edge of the outer surface of the pull post, and the locking pin is located inside the L-shaped groove.

[0010] Preferably, the fitting includes a movable groove formed at the upper end of the charging gun head, a seat post is slidably mounted through the inner bottom surface of the movable groove, a pusher is rotatably mounted at the end of the seat post, a reinforcing post is rotatably mounted at the end of the pusher, and the end of the reinforcing post is fixed to the front end of the fixed ring block.

[0011] Preferably, a block seat is fixedly installed at the upper end of the seat post, the block seat is slidably installed inside the movable groove, a rubber push block is fixedly installed at the upper end of the block seat, the upper front edge of the rubber push block is set with an inclined surface, a reducing hole is opened through the center of the front end of the receiving cavity, the reinforcing column is slidably inserted through the reducing hole, the middle of the charging gun head is hollowed out to form a movable cavity, the reducing hole is connected to the movable cavity, the seat post and the reinforcing column both extend into the movable cavity, and the push frame is located inside the movable cavity.

[0012] Preferably, a push ring is coaxially embedded on the outer surface of the reinforcing column, the push ring is slidably installed inside the reducing hole, and a return spring is wound around the outer side of the reinforcing column. One end of the return spring is fixed to the rear end of the push ring, and the other end of the return spring is fixed to the inner wall of the reducing hole.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The two elastically designed pin-fixing lugs loosen the clamping on the pins when the charging gun is opened, allowing the pins to be easily removed from the pin holes for replacement. This avoids the need to replace the entire charging gun when a pin is damaged, effectively reducing replacement costs. Simultaneously, pulling the pull column moves the support rod downwards, causing the two pin-fixing lugs on the lower synchronization frame to move downwards as well. During this process, the lower gear plate moves downwards synchronously with the lower synchronization frame, driving the gears to rotate and causing the upper gear plate to move upwards, thus moving the two pin-fixing lugs on the upper synchronization frame upwards. This allows the upper and lower pin-fixing lugs to separate synchronously, loosening the clamping on the pins and enabling both pins to be disassembled and replaced simultaneously. The entire process can be completed simply by pulling the pull column, making operation simple and convenient for replacing pins.

[0015] 2. When the charging gun head is inserted into the interface of the device for charging, the rubber push block is pressed against the block seat by the inner wall of the interface. This causes the push frame to move through the seat post on the block seat, pushing the reinforcing post and then the ring body. This allows the pin fixing lug on the ring body to generate a backward thrust, pushing the rear pin sleeve so that the pin can be pressed tightly against the electrode. This ensures full contact between the pin and the electrode, guaranteeing normal charging. On the other hand, when the pin is pressed tightly against the electrode and the reinforcing post and seat post cannot move, the rubber push block will shrink and deform under the pressure of the inner wall of the interface, generating a reaction force that presses the rubber push block tightly against the inner wall of the interface. This creates a certain resistance, increasing the insertion force between the charging gun head and the interface, ensuring that the charging gun and the interface do not become loose during charging. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a replaceable pin assembly for a charging gun charging interface according to the present invention.

[0017] Figure 2 This is a longitudinal sectional view of the head of a charging gun according to the present invention, which is a replaceable pin assembly for a charging gun charging interface.

[0018] Figure 3 This invention relates to a replaceable pin assembly for a charging gun charging interface. Figure 2 Enlarged view of A in the middle;

[0019] Figure 4 This is a cross-sectional view of the head of a charging gun according to the present invention, which is a replaceable pin assembly for a charging gun interface.

[0020] Figure 5 This is an exploded view of the connection between the pin and the retaining pin ear of a replaceable pin assembly for a charging gun charging interface according to the present invention.

[0021] Figure 6 This is a schematic diagram of the pull post of a replaceable pin assembly for a charging gun charging interface according to the present invention.

[0022] In the diagram: 1. Charging gun; 2. Pinhole; 3. Insert pin; 4. Rubber push block; 5. Movable groove; 6. Electrode; 7. Pull post; 8. Through groove; 9. Front needle sleeve; 10. Needle fixing ear; 11. Receiving cavity; 12. Synchronizing frame; 13. Different diameter hole; 14. Reinforcing post; 15. Movable cavity; 16. Block seat; 17. Seat post; 18. Push frame; 19. Push ring; 20. Return spring; 21. Clamping spring; 22. Ring body; 23. Rear needle sleeve; 24. Bearing rod; 25. Rod cap; 26. Connecting shaft; 27. Gear; 28. Fixing ring block; 29. ​​Lower toothed plate; 30. Upper toothed plate; 31. Locking pin; 32. Ear bracket; 33. Pull ring; 34. Splicing post; 35. L-shaped groove. Detailed Implementation

[0023] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0024] like Figures 1-6The diagram shows a replaceable pin assembly for a charging gun's charging interface, comprising a charging gun 1 and two electrodes symmetrically installed inside the charging gun 1. The electrodes 6 are connected to the wiring inside the charging gun 1 for conductivity. Two pin holes 2 are formed at the front end of the charging gun 1, and pins 3 are coaxially arranged inside each pin hole 2. The pins 3 are preferably made of a new type of precious metal material for electrical contact, possessing excellent conductivity and resistance to arc erosion, effectively solving the problems of oxidation, carbon buildup, and excessive wear that easily occur with traditional pins 3 under high-frequency insertion and removal. The pin holes 2 serve to accommodate the pins 3. The rear end of the pins 3 is attached to the electrodes 6 for conductivity. A rear pin sleeve 23 is coaxially embedded on the outer surface of the pin 3 near the rear edge, and a front pin sleeve 9 is coaxially embedded on the outer surface of the pin 3 near the front of the rear pin sleeve 23. A ring body 22 is coaxially arranged on both sides. The rear needle sleeve 23 and the front needle sleeve 9 can improve the fixing force of the pin 3 on the fixing ear 10. A plug is provided between the ring body 22 and the gun head of the charging gun 1. Two pin fixing ears 10 are symmetrically and elastically installed inside the ring body 22. The two pin fixing ears 10 are clamped on the outside of the pin 3. The pin fixing ears 10 play the role of holding and fixing the pin 3. The pin fixing ears 10 fit between the front needle sleeve 9 and the rear needle sleeve 23. The front needle sleeve 9 can fit into the needle hole 2 to limit the pin 3 and make the pin 3 located in the center of the needle hole 2. In order to realize real-time monitoring and intelligent management of the operating status of the charging gun 1, the charging gun 1 establishes a communication connection with the industrial gateway through internal circuitry. Once the contact resistance is abnormal due to the wear of the pin 3, the industrial gateway can quickly feed back the fault information to the background system to achieve accurate fault location and early warning.

[0025] Ear brackets 32 are fixedly installed on opposite ends of the two pin ears 10. Both ear brackets 32 extend through the outer surface of the ring body 22. The ear brackets 32 guide the pin ears 10. The ear brackets 32 slide with the ring body 22. Synchronizing frames 12 are provided on the upper and lower sides of the ring body 22. The synchronous frames 12 drive the pin ears 10 on both sides to move synchronously. The ends of the synchronous frames 12 are fixed to the ear brackets 32.

[0026] The rear part of the charging gun 1 is hollowed out to form a receiving cavity 11. The ring body 22 is located inside the receiving cavity 11. The receiving cavity 11 serves to accommodate the ring body 22. A retaining block 28 is embedded between the opposing surfaces of the two ring bodies 22. The retaining block 28 serves to fix the two ring bodies 22 together. A gear 27 is installed at the rear end of the retaining block 28. One side of the gear 27 meshes with an upper toothed plate 30. The end of the upper toothed plate 30 is fixed to the upper synchronous frame 12. The other side of the gear 27 meshes with a lower toothed plate 29. The gear 27 can drive the upper toothed plate 30 and the lower toothed plate 29 to move in opposite directions. The end of the lower toothed plate 29 is fixed to the lower synchronous frame 12.

[0027] A connecting shaft 26 is embedded through the inside of the gear 27. The end of the connecting shaft 26 is rotatably connected to the fixed ring block 28. The connecting shaft 26 serves to support the gear 27. A bearing rod 24 is slidably installed through the inside of the fixed ring block 28. A rod cap 25 is coaxially embedded at the upper end of the bearing rod 24. The bearing rod 24 drives the lower synchronous frame 12 to move. A clamping spring 21 is wound around the outside of the bearing rod 24. The rod cap 25 is pushed by the clamping spring 21. One end of the clamping spring 21 is fixed to the upper end of the fixed ring block 28, and the other end of the clamping spring 21 is fixed to the lower end of the rod cap 25. The lower synchronous frame 12 is embedded in the outer surface of the bearing rod 24. The clamping spring 21 can push the lower synchronous frame 12, so that the upper and lower synchronous frames 12 move synchronously towards each other under the action of the gear 27, the upper toothed plate 30, and the lower toothed plate 29, so that the two upper and lower pin lugs 10 can be tightly held on the pin 3 to fix the pin 3.

[0028] A pull post 7 is coaxially embedded at the lower end of the support rod 24. The pull post 7 facilitates the pulling of the support rod 24. A through groove 8 is provided through the lower end of the receiving cavity 11, extending to the lower end of the charging gun head 1. The pull post 7 passes through the through groove 8, which allows the pull post 7 to pass through. A splicing post 34 is slidably installed inside the pull post 7, extending from the lower end of the pull post 7. The splicing post 34 serves to splice the pull ring 33 and the pull post 7 together. The lower end of the splicing post 34 is fixedly installed. There is a pull ring 33, which facilitates the holding and pulling of the pull post 7. The outer surface of the splicing post 34 extends with a locking pin 31. An L-shaped groove 35 is opened at the lower edge of the outer surface of the pull post 7. The locking pin 31 is located inside the L-shaped groove 35. By rotating the splicing post 34, the locking pin 31 on the splicing post 34 is rotated to the corner of the L-shaped groove 35. Then, by pulling downward, the splicing post 34 can be pulled out from the pull post 7, that is, the pull ring 33 and the pull post 7 are separated to ensure that it will not be blocked by the pull ring 33 during use.

[0029] The insert includes a movable groove 5 formed at the upper end of the charging gun head 1. A seat post 17 is slidably installed through the bottom surface of the movable groove 5. The movable groove 5 serves to allow the block seat 16 to move normally. A pusher 18 is rotatably installed at the end of the seat post 17. A reinforcing post 14 is rotatably installed at the end of the pusher 18. The seat post 17 can drive the pusher 18 to move and push the reinforcing post 14, so that the reinforcing post 14 can push the ring body 22, so that the pin lug 10 on the ring body 22 can generate a backward thrust to push the rear pin sleeve 23, so that the insert pin 3 can be pressed against the electrode 6, thereby ensuring that the insert pin 3 and the electrode 6 are in full contact to ensure normal charging. The end of the reinforcing post 14 is fixed to the front end of the ring block 28.

[0030] A block seat 16 is fixedly installed on the upper end of the seat post 17. The block seat 16 is slidably installed inside the movable groove 5. The block seat 16 serves to support the rubber push block 4. The rubber push block 4 is fixedly installed on the upper end of the block seat 16. The front edge of the upper end of the rubber push block 4 is set with a slope. When the head of the charging gun 1 is inserted into the interface of the device, the slope on the rubber push block 4 can be used to allow the rubber push block 4 to smoothly enter the interface, thus avoiding the phenomenon of the rubber push block 4 abutting against the interface. A reducing hole 13 is opened through the center of the front end of the receiving cavity 11. The reinforcing post 14 slides through the inside of the reducing hole 13. The reducing hole 13 serves to allow the reinforcing post 14 to move. A movable cavity 15 is hollowed out in the middle of the head of the charging gun 1. The reducing hole 13 is connected to the movable cavity 15. The seat post 17 and the reinforcing post 14 both extend into the inside of the movable cavity 15. The push frame 18 is located inside the movable cavity 15. The movable cavity 15 serves to accommodate the push frame 18.

[0031] A push ring 19 is coaxially embedded on the outer surface of the reinforcing column 14. The push ring 19 is slidably installed inside the reducing hole 13. The push ring 19 is pushed by the return spring 20. The return spring 20 is wound around the outer side of the reinforcing column 14. One end of the return spring 20 is fixed to the rear end of the push ring 19, and the other end of the return spring 20 is fixed to the inner wall of the reducing hole 13. The return spring 20 can push the reinforcing column 14, so that the lowered rubber push block 4 can be reset and extend out from the inside of the movable groove 5.

[0032] During use, simply insert the charging gun 1 into the interface on the device to begin charging. At this time, the rubber pusher 4, pressed against the inner wall of the interface, presses against the block seat 16. This, via the seat post 17 on the block seat 16, drives the pusher 18 to move, pushing the reinforcing post 14, which in turn pushes the ring 22. This causes the pin-fixing lug 10 on the ring 22 to generate a backward thrust, pushing the rear pin sleeve 23 so that the pin 3 can be pressed firmly against the electrode 6. This ensures full contact between the pin 3 and the electrode 6, guaranteeing normal charging. Simultaneously, when the pin 3 is pressed firmly against the electrode 6, and the reinforcing post 14 and seat post 17 cannot move, the rubber pusher 4, compressed by the inner wall of the interface, will contract and deform, generating a reaction force that presses the rubber pusher 4 firmly against the interface. On the inner wall of the port, a certain resistance is generated to increase the insertion force between the charging gun head and the interface, so as to ensure that there is no loosening between the charging gun 1 and the interface during charging. When the pin 3 is damaged, the pull column 7 can be pulled to move the bearing rod 24 down, which in turn moves the two pin fixing ears 10 on the lower synchronous frame 12 down. During this process, the lower tooth plate 29 moves down synchronously with the lower synchronous frame 12 to drive the gear 27 to rotate, which in turn moves the upper tooth plate 30 up, so that the two pin fixing ears 10 on the upper synchronous frame 12 move up, so that the upper and lower pin fixing ears 10 separate synchronously to loosen the grip on the pin 3. Then, the charging gun 1 can be tilted directly to pour the pin 3 out of the pin hole 2 for replacement to ensure subsequent use.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A replaceable pin assembly for a charging gun charging interface, comprising a charging gun (1) and two electrodes (6) symmetrically mounted inside the charging gun (1), wherein two pin holes (2) are formed through the front end of the charging gun (1), and pins (3) are coaxially arranged inside both pin holes (2), characterized in that: The rear end of the pin (3) is attached to the electrode (6). A rear pin sleeve (23) is coaxially embedded on the outer surface of the pin (3) near the rear edge. A front pin sleeve (9) is coaxially embedded on the outer surface of the pin (3) near the front of the rear pin sleeve (23). A ring body (22) is coaxially provided on the outer side of both pins (3). A plug is provided between the ring body (22) and the head of the charging gun (1). Two pin fixing ears (10) are symmetrically and elastically installed inside the ring body (22). The two pin fixing ears (10) are clamped on the outer side of the pin (3). The pin fixing ears (10) are attached between the front pin sleeve (9) and the rear pin sleeve (23).

2. A replaceable pin assembly for a charging gun charging interface according to claim 1, characterized in that: Ear brackets (32) are fixedly installed on opposite ends of the two fixed needle ears (10). Both ear brackets (32) extend through the outer surface of the ring body (22). The ear brackets (32) slide with the ring body (22). Synchronizing frames (12) are provided above and below the ring body (22). The ends of the synchronizing frames (12) are fixed to the ear brackets (32).

3. A replaceable pin assembly for a charging gun charging interface according to claim 2, characterized in that: The charging gun (1) has a cavity (11) hollowed out at the rear of the gun head. The ring (22) is located inside the cavity (11). A fixed ring block (28) is embedded between the opposite surfaces of the two rings (22). A gear (27) is installed at the rear end of the fixed ring block (28). An upper toothed plate (30) meshes with one side of the gear (27). The end of the upper toothed plate (30) is fixed to the upper synchronous frame (12). A lower toothed plate (29) meshes with the other side of the gear (27). The end of the lower toothed plate (29) is fixed to the lower synchronous frame (12).

4. A replaceable pin assembly for a charging gun charging interface according to claim 3, characterized in that: A connecting shaft (26) is embedded inside the gear (27). The end of the connecting shaft (26) is rotatably connected to the fixed ring block (28). A bearing rod (24) is slidably installed inside the fixed ring block (28). A rod cap (25) is coaxially embedded at the upper end of the bearing rod (24). A clamping spring (21) is wound around the outside of the bearing rod (24). One end of the clamping spring (21) is fixed to the upper end of the fixed ring block (28), and the other end of the clamping spring (21) is fixed to the lower end of the rod cap (25). The timing frame (12) below is embedded in the outer surface of the bearing rod (24).

5. A replaceable pin assembly for a charging gun charging interface according to claim 4, characterized in that: The lower end of the bearing rod (24) is coaxially embedded with a pull post (7). The lower end of the cavity (11) is provided with a through groove (8). The through groove (8) extends to the lower end of the charging gun (1). The pull post (7) passes through the inside of the through groove (8). A splicing post (34) is slidably installed inside the pull post (7). The splicing post (34) extends out from the lower end of the pull post (7). A pull ring (33) is fixedly installed at the lower end of the splicing post (34). A locking pin (31) extends from the outer surface of the splicing post (34). An L-shaped groove (35) is provided at the lower edge of the outer surface of the pull post (7). The locking pin (31) is located inside the L-shaped groove (35).

6. A replaceable pin assembly for a charging gun charging interface according to claim 3, characterized in that: The fitting includes a movable groove (5) opened at the upper end of the charging gun (1). A seat post (17) is slidably installed through the inner bottom surface of the movable groove (5). A pusher (18) is rotatably installed at the end of the seat post (17). A reinforcing post (14) is rotatably installed at the end of the pusher (18). The end of the reinforcing post (14) is fixed to the front end of the fixed ring block (28).

7. A replaceable pin assembly for a charging gun charging interface according to claim 6, characterized in that: A block seat (16) is fixedly installed on the upper end of the seat (17). The block seat (16) is slidably installed inside the movable groove (5). A rubber push block (4) is fixedly installed on the upper end of the block seat (16). The upper front edge of the rubber push block (4) is set with an inclined surface. A reducing hole (13) is opened through the center of the front end of the cavity (11). The reinforcing column (14) slides through the reducing hole (13). The middle part of the charging gun (1) is hollowed out to form a movable cavity (15). The reducing hole (13) is connected to the movable cavity (15). The seat (17) and the reinforcing column (14) both extend into the movable cavity (15). The push frame (18) is located inside the movable cavity (15).

8. A replaceable pin assembly for a charging gun charging interface according to claim 7, characterized in that: The outer surface of the reinforcing column (14) is coaxially inlaid with a push ring (19), which is slidably installed inside the reducing hole (13). A return spring (20) is wound around the outer side of the reinforcing column (14). One end of the return spring (20) is fixed to the rear end of the push ring (19), and the other end of the return spring (20) is fixed to the inner wall of the reducing hole (13).

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