A plug structure for a discharge strip outlet

Abstract

The utility model relates to a plug structure for discharging row plug, including casing, plug pin, fixed probe and temperature sensing element, the casing includes plug pin support, and the plug pin support is equipped with several plug pin fixed mouth and two probe fixed mouth, and the plug joint part of plug pin fixed mouth lower surface inserts the plug pin hole of lower casing, and the plug pin support is installed with element seat, and element seat is equipped with the accommodation groove for assembling temperature sensing element, and the both sides of element seat are equipped with the positioning clamping groove, and the positioning clamping groove is connected with the same side plug pin end portion limit connection. The utility model adds the plug pin support and provides stable installation support for plug pin, probe, temperature sensing element, ensures that plug whole structure is stable, and the plug pin fixed mouth of plug pin support prevents the circumferential rotation of plug pin, ensures that plug pin keeps and plugs and unplugs smoothness and the reliability of conducting electricity, and the assembly of element seat and plug pin support realizes preliminary fixation, and the both sides positioning clamping groove of it are connected with the same side plug pin end portion limit, and the stable position of plug pin restricts the displacement of element seat, avoids temperature sensing element displacement.

Description

Technical Field

[0001] This utility model relates to the field of cable plug design, specifically to a plug structure for a discharge socket. Background Technology

[0002] With the development of new energy vehicle technology, the vehicle's ability to discharge to external loads has become an important application scenario, such as supplying power to household appliances and emergency equipment via an electric gun connected to a discharge power strip. The discharge power strip, acting as an energy transfer medium, can be electrically connected to energy storage devices such as new energy vehicles. It connects to the plug at one end of the electric gun through the discharge socket, and then provides power to external electrical devices through the power socket. Therefore, the plug structure of the discharge power strip in conjunction with the electric gun in a new energy vehicle is a key component for ensuring stable power transmission and avoiding safety hazards.

[0003] These plugs need to withstand long-term insertion and removal operations, vibrations during transportation, and external forces in the usage environment. At the same time, it is necessary to ensure the stability of the positions of core components such as internal pins, temperature detection elements, and sensing probes to maintain conductivity reliability and functional accuracy.

[0004] However, existing plug structures for power strips still have significant shortcomings: On the one hand, most plugs lack a dedicated core load-bearing component to coordinate and fix the key internal components, relying solely on the simple enclosure of the upper and lower shells to house the components. This leads to the internal components being prone to relative displacement with the shell under frequent plugging and unplugging or vibration conditions, resulting in a loose overall structure and affecting long-term stability. On the other hand, for the pins that transmit electrical energy, existing fixing methods often struggle to balance radial limiting and precise axial positioning. Fixing them with only a single hole can easily cause the pins to rotate circumferentially, leading to poor conductive contact. Furthermore, for temperature sensing elements used for safety protection, existing plugs often use a single fixing method, such as fixing them with a simple clip. When the plug is subjected to external impact or temperature changes causing slight deformation of the components, the temperature sensing element is prone to displacement, resulting in temperature detection deviations. This makes it difficult to accurately capture the internal working temperature of the plug and effectively fail to provide safety protection. Utility Model Content

[0005] To address the problems of existing plugs used for discharge power strips, such as easy displacement of internal components, poor conductive contact caused by circumferential rotation of the pins, and temperature detection deviation due to the risk of displacement of the temperature sensing element, this utility model provides a plug structure for discharge power strips.

[0006] The technical solution of this utility model is as follows: A plug structure for a discharge connector includes a housing, three prongs located at the bottom of the housing, and two fixed probes and a temperature sensing element located inside the housing, characterized in that... The housing includes an upper housing, a lower housing, and a pin bracket assembled on the lower housing; The pin bracket is provided with several pin fixing holes for pins to pass through, and the lower surface of the pin fixing holes is provided with protruding plug-in parts. The lower housing is provided with several corresponding pin holes, and the plug-in parts are inserted into the corresponding pin holes. The pin bracket is also provided with a probe fixing port for mounting the two fixed probes, and the lower housing is provided with two corresponding probe holes; The pin bracket is equipped with a component holder, which has a receiving groove for assembling the temperature sensing element. The component holder has symmetrical positioning slots on both sides, and the positioning slots are limited and connected to the pin end on the same side.

[0007] According to the above-described solution, the plug structure is a three-prong plug structure, including a live wire prong, a neutral wire prong, and a ground prong; the plug bracket is provided with a live wire prong fixing port, a neutral wire fixing port, and a ground prong fixing port for the live wire prong, the neutral wire prong, and the ground prong to pass through respectively; the lower housing is provided with a corresponding live wire prong hole, a neutral wire hole, and a ground prong hole.

[0008] Furthermore, the two probe fixing ports are symmetrically arranged on both sides of the grounding fixing port; the two positioning slots on both sides of the component seat are respectively limited and connected to the end of the live wire pin and the end of the neutral wire pin.

[0009] According to the above-described solution of this utility model, the outer periphery of the insertion part is provided with a rubber ring groove, and an elliptical waterproof sealing ring is installed in the rubber ring groove.

[0010] According to the above-described scheme of this utility model, a recessed groove is provided below the probe fixing port, and a limiting protrusion ring is provided for the fixed probe. The fixed probe is inserted into the probe fixing port from bottom to top, and the limiting protrusion ring is embedded in the recessed groove.

[0011] Furthermore, the lower section of the fixed probe is fitted with a circular waterproof sealing ring. When the pin bracket is assembled on the lower housing, the lower section of the fixed probe is inserted into the probe hole and the circular waterproof sealing ring is clamped between the limiting protrusion and the lower housing.

[0012] According to the above-described solution of this utility model, the upper housing is provided with an inlet channel for the power supply gun cable to enter, and the lower housing is provided with a U-shaped notch corresponding to the inlet channel. When the upper housing and the lower housing are fastened together, the end of the inlet channel is engaged with the U-shaped notch.

[0013] According to the present utility model with the above solution, the inner sidewalls of the lower housing on opposite sides are provided with snap-fit ​​protrusions, the upper surface of the snap-fit ​​protrusions is a guide slope, and the lower surface of the snap-fit ​​protrusions is a rectangular surface; the pin bracket is provided with a rectangular block corresponding to the snap-fit ​​protrusions, and the rectangular block abuts against the lower surface of the snap-fit ​​protrusions to fix the pin bracket.

[0014] According to the present invention based on the above scheme, the lower surface of the component holder is provided with a pin, the pin bracket is provided with a pin hole, and the component holder is installed on the pin bracket by inserting the pin into the pin hole.

[0015] According to the above-described scheme of this utility model, the outer wall of the lower housing is provided with a locking groove, which is used to engage with the elastic buckle of the discharge plug.

[0016] The advantages of this utility model based on the above solution are as follows: This utility model adds a pin bracket, which is assembled in the lower housing as a core load-bearing component, to provide a foundation for the stable installation of the pins, probes, and temperature sensing elements, and to ensure that the overall structure of the plug is not easily loosened during plugging, unplugging, handling, or vibration. The protruding insertion part on the lower surface of the pin fixing port is precisely inserted into the corresponding pin hole of the lower housing, which improves the stability of the pin bracket. The pin fixing port of the pin bracket radially limits the pin to prevent the pin from rotating circumferentially. This can avoid poor conductive contact caused by loose pins, and at the same time ensure that the pins maintain smooth insertion and removal and reliable conductivity during long-term use. The component holder is initially fixed by assembling with the pin bracket. The positioning slots on both sides are symmetrically arranged and connected to the pin end on the same side for limiting the displacement of the component holder by means of the stable position of the pin, so as to avoid temperature detection deviation caused by the displacement of the temperature sensing element. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is another perspective of the exploded view of the structure of this utility model; Figure 4 An exploded view of the internal components of the plug bracket and connector; Figure 5 Another perspective on the exploded view of the internal component structure of the pin bracket and plug; Figure 6 This is a schematic diagram of the structure of a discharge connector in the prior art; Figure 7 This is a schematic diagram of the internal structure of the discharge socket of an existing discharge connector.

[0018] In the diagram, 1. Upper housing; 11. Cable inlet channel; 2. Lower housing; 21. Pin hole; 22. Probe hole; 23. Locking groove; 24. U-shaped notch; 25. Snap-fit ​​protrusion; 3. Pin bracket; 31. Component holder; 311. Positioning slot; 32. Pin fixing port; 321. Connecting part; 322. Rubber ring groove; 33. Probe fixing port; 331. Countersunk groove; 34. Pin hole; 35. Rectangular block; 4. Pin; 5. Fixed probe; 51. Limiting ring; 6. Temperature sensing element; 7. Waterproof sealing ring; 8. Discharge connector; 81. Telescopic induction probe; 82. Flexible snap-fit; 83. Button. Detailed Implementation

[0019] To better understand the purpose, technical solution, and technical effects of this utility model, the following description, in conjunction with the accompanying drawings and embodiments, will provide further explanation. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need further definition and explanation in subsequent drawings. It is also stated that the embodiments described below are only for explaining this utility model and are not intended to limit it.

[0020] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intermediate component.

[0021] The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art, and is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. The term "several" means two or more, unless otherwise expressly and specifically defined.

[0022] like Figure 1 and Figure 6 As shown, a plug structure for a discharge socket is used as one end of an electric gun for a new energy vehicle. The other end of the electric gun is electrically connected to the interface of the new energy vehicle. When the plug of this utility model is inserted into the discharge socket of the discharge socket 8, the new energy vehicle can supply power to the discharge socket 8. At this time, the power supply of external electrical equipment is inserted into the power socket on the discharge socket 8 to obtain electrical energy.

[0023] like Figure 2 and Figure 3 As shown, the plug structure for the discharge socket 8 of this utility model includes a shell portion, which comprises an upper shell 1, a lower shell 2, and a pin bracket 3. The upper shell 1 and the lower shell 2 are interlocked to form a protective outer shell, which protects the core components inside the plug. This effectively isolates the plug from external dust, moisture, and minor external impacts, preventing damage to the core components (such as pins 4, fixed probes, and temperature sensing elements 6) due to external environmental interference, and ensuring long-term stable operation of the core components. The pin bracket 3 is located on the inner surface of the lower shell 2 and is specifically used to install and fix the internal core components. This replaces the traditional method of simply wrapping the plug with a shell, providing a dedicated bearing and positioning foundation for the core components. This prevents relative displacement between the internal core components and the shell during frequent plugging and unplugging, handling vibration, or use with new energy vehicles, avoiding overall structural loosening and significantly improving the stability and service life of the plug structure.

[0024] The electric gun's cable enters the plug structure through the inlet channel 11 of the upper housing 1. Different cable routes correspond to different pins 4, such as ground, live, and neutral pins, achieving orderly cable routing and avoiding the risk of wire wear, poor contact, or short circuits caused by messy cable tangling inside the plug. The three pins 4 pass through the pin bracket 3 and the lower housing 2 sequentially from the inside out. The limiting function of the pin bracket 3 and the guiding function of the lower housing 2 work together to ensure that the pins 4 always maintain a neat arrangement, preventing the pins 4 from being crooked or misaligned. This ensures that when the plug is inserted into the discharge socket of the discharge connector 8, the pins 4 can accurately align with the conductive structure inside the discharge socket, reducing the problem of poor conductive contact caused by misalignment of the pins 4.

[0025] In addition to the three prongs 4, the core components inside the plug also include two fixed probes 5 and a temperature sensing element 6. The fixed probes 5 are made of conductive material and are used to contact the retractable sensing probe 81 of the discharge socket 8 to activate the temperature sensing element 6. The temperature sensing element 6 is used to detect the internal operating temperature of the plug. This ensures that the temperature sensing element 6 is only activated when the plug is correctly inserted into the discharge socket of the discharge socket 8, avoiding ineffective operation of the temperature sensing element 6 when the plug is not fully inserted, misinserted, or empty, and making the temperature detection function precisely synchronized with the power supply status of the new energy vehicle to the discharge socket 8.

[0026] The plug has two fixed probes 5, which are symmetrically arranged on both sides of the foot to avoid poor contact or misalignment of the probe on one side, which could cause the temperature sensing element 6 to fail to start. This ensures that the process of probe contact start-temperature sensing element 6 detection runs stably.

[0027] In this invention, the upper housing 1 has a downward opening, and a wire inlet channel 11 is provided on one side wall, with the end of the wire inlet channel 11 protruding from the inner side wall of the upper housing 1. The lower housing 2 has an upward opening, and a U-shaped notch 24 is provided in the opening of the lower housing 2 corresponding to the wire inlet channel 11. During assembly, the position of the wire inlet channel 11 can be quickly positioned through the U-shaped notch, achieving precise engagement of the upper and lower housings 2 and improving assembly efficiency. The size of the lower housing 2 is smaller than that of the upper housing 1. When the upper housing 1 and the lower housing 2 are engaged, the lower housing 2 is inserted into the upper housing 1, and the U-shaped notch 24 of the lower housing 2 engages with the end of the wire inlet channel 11. When the housings are engaged, they form a precise wrapping and limiting of the electric gun cable access area, avoiding the problem of gaps easily generated at the cable inlet in traditional housing engagements. This effectively isolates external dust and moisture from entering the plug, reducing the risk of damage to core components due to environmental interference. At the same time, this engaging structure can fix the cable inlet position, preventing loosening of the wiring caused by pulling between the cable and the internal wiring terminals of the plug when the plug is inserted or removed or when the electric gun is moved slightly.

[0028] In this invention, the inner walls of the lower housing 2 adjacent to the U-shaped notch 24 on both sides are provided with snap-fit ​​protrusions 25. The snap-fit ​​protrusions 25 are wedge-shaped and have a guide slope on their upper surface. The guide slope of the wedge-shaped snap-fit ​​protrusions 25 can guide the plug bracket 3 to slide smoothly into the lower housing 2 along the slope, making it easy for the plug bracket 3 to be installed into the lower housing 2. Its lower surface is a horizontal rectangular surface. The abutment structure between the horizontal rectangular surface of the snap-fit ​​protrusions 25 and the rectangular block 35 of the plug bracket 3 can limit the plug bracket 3, effectively resisting the upward external force generated during plug insertion and preventing the plug bracket 3 from moving or shifting within the lower housing 2. The plug bracket 3 has rectangular blocks 35 on both sides corresponding to the snap-fit ​​protrusions 25. When the plug bracket 3 is installed in place, the rectangular blocks 35 abut against the lower surface of the snap-fit ​​protrusions 25 of the lower housing 2 to achieve the installation and fixation of the plug bracket 3.

[0029] like Figure 4As shown, the plug bracket 3 has plug fixing ports 32 corresponding to three plugs 4 (ground, live, and neutral): a ground fixing port, a live fixing port, and a neutral fixing port. The lower surface of each of the three plug fixing ports 32 has a downwardly protruding insertion portion 321. A through hole in the middle of the insertion portion 321 is used to pass through the plug 4. A rubber ring groove 322 is provided on the outer periphery of the insertion portion 321, and an elliptical waterproof sealing ring 7 is installed inside the rubber ring groove 322. The lower housing 2 has corresponding plug holes 21, that is, the ground hole of the lower housing 2 corresponds to the ground fixing port of the plug bracket 3, the live hole of the lower housing 2 corresponds to the live fixing port of the plug bracket 3, and the neutral hole of the lower housing 2 corresponds to the neutral fixing port of the plug bracket 3. When the plug bracket 3 is installed inside the lower housing 2, the insertion portions 321 of the different plug fixing ports 32 are inserted into the plug holes 21 of the lower housing 2 to install and fix the three plugs 4. The outer diameter of the insertion part 321 of the insertion fixing port 32 of the insertion bracket 3 is equal to the inner diameter of the insertion hole 21 of the lower housing 2. After the insertion part 321 is inserted into the insertion hole 21, the elliptical waterproof sealing ring 7 on the outer periphery of the insertion part 321 seals the gap between the insertion hole 21 and the insertion part 321, thereby improving the sealing performance.

[0030] The lower part of the fixed probe 5 is fitted with a circular waterproof sealing ring 7. When the pin bracket 3 is assembled with the lower housing 2, the circular waterproof sealing ring 7 is clamped between the limiting protrusion ring 51 and the lower housing 2 to seal the edge of the probe hole 22 of the lower housing 2 and improve the sealing performance.

[0031] The oval waterproof sealing ring 7 at pin 4 and the circular waterproof sealing ring 7 at the fixed probe 5 effectively prevent external rainwater, dust, moisture and other impurities from entering the plug. Especially in outdoor discharge scenarios of new energy vehicles, it can prevent short circuits, corrosion or poor contact caused by impurities contacting core components such as pin 4 and temperature sensing element 6, greatly improving the plug's environmental adaptability and service life.

[0032] The plug bracket 3 is also provided with two probe fixing ports 33 corresponding to the two fixed probes 5. The two probe fixing ports 33 are symmetrically arranged on both sides of the ground fixing port. When the discharge plug 8 is plugged into the discharge socket, the two fixed probes 5 can synchronously and evenly abut against the telescopic sensing probe 81 in the socket, avoiding the failure of the temperature sensing element 6 due to poor contact or misalignment of the probe on one side. like Figure 4 and Figure 5As shown, the probe fixing port 33 is a circular hole, and one side of the circular hole is an open structure, that is, the side of the pin bracket 3 has a notch extending to the probe fixing port 33; during assembly, it is not necessary to fully insert the probe from one end of the circular hole, but only to snap the probe into the fixing port along the notch direction to complete the installation. The lower housing 2 has two probe holes 22 corresponding to the two probe fixing ports 33, that is, the probe fixing port 33 on the left side of the pin bracket 3 is aligned with the probe hole 22 on the left side of the lower housing 2, and the probe fixing port 33 on the right side of the pin bracket 3 is aligned with the probe hole 22 on the right side of the lower housing 2.

[0033] The lower opening of the probe fixing port 33 has a recessed groove 331. The fixed probe 5 is provided with a limiting protrusion ring 51. The fixed probe 5 is inserted into the probe fixing port 33 of the pin bracket 3 from bottom to top until the limiting protrusion ring 51 is embedded in the recessed groove 331 to achieve the limiting and fixing of the fixed probe 5. At this time, the lower part of the fixed probe 5 protrudes from the lower surface of the pin bracket 3, and the length of the protruding part is equal to the thickness of the lower housing 2. When the pin bracket 3 is assembled in the lower housing 2, the lower part of the fixed probe 5 is inserted into the probe hole 22 of the lower housing 2, and the lower surface of the fixed probe 5 is flush with the lower surface of the lower housing 2.

[0034] In this invention, a component holder 31 is mounted on the upper surface of the plug bracket 3. Specifically, the plug bracket 3 has a pin hole 34 between the live wire fixing port and the neutral wire fixing port, and a pin is provided on the lower surface of the component holder 31. The component holder 31 is installed on the plug bracket 3 by inserting the pin into the pin hole 34. The pin-pin and pin hole 34 insertion structure enables quick alignment and installation of the component holder 31 and the plug bracket 3, and initial fixation can be completed without complicated tools. A receiving groove is provided in the middle of the component holder 31, which is used to install the temperature sensing element 6. It can be seen that the temperature sensing element 6 is fixed on the plug bracket 3 by the component holder 31.

[0035] In a preferred embodiment, each side of the component holder 31 is provided with a positioning slot 311, which is respectively connected to the end of the live wire pin and the neutral wire pin for limiting. Specifically, the ends of the live wire pin and the neutral wire pin are both cylindrical, and the positioning slot 311 is a U-shaped positioning slot 311. The U-shaped positioning slot 311 on one side locks the end of the live wire pin, and the U-shaped positioning slot 311 on the other side locks the end of the neutral wire pin, forming a two-sided limiting structure to fix the component holder 31.

[0036] The component holder 31 is initially positioned by inserting a pin into the pin hole 34 of the plug bracket 3. Secondary reinforcement is achieved by the U-shaped positioning slots 311 on both sides, which limit the cylindrical ends of the live and neutral wires. This effectively resists micro-deformation of components caused by plug insertion / removal vibrations, external impacts, or temperature changes, preventing displacement of the component holder 31 and the temperature sensing element 6. The temperature sensing element 6 accurately captures the internal working temperature of the plug, avoiding detection deviations caused by displacement. Furthermore, if subsequent maintenance of the temperature sensing element 6 is required, only the U-shaped slots need to be released from the pin 4's limiting position, and the pin needs to be pulled out to remove the component holder 31. This simplifies maintenance operations and reduces maintenance costs.

[0037] like Figure 1 and Figure 7 As shown, in a preferred embodiment, the outer wall surface of the lower housing 2 away from the plug inlet end is provided with a locking groove 23. The locking groove 23 is adapted to the elastic buckle 82 at the discharge socket on the discharge socket 8. When the plug of this invention is inserted into the discharge socket, the elastic buckle 82 is inserted into the locking groove 23, thereby securing the plug to the discharge socket. The discharge socket 8 is provided with a button 83 near the discharge socket, which is linked to the elastic buckle 82. When it is necessary to unplug the plug of this invention, the user needs to press the button 83, causing the elastic buckle 82 to disengage from the locking groove 23, thus unlocking the plug.

[0038] The specific implementation process is as follows: a. When the plug is inserted into the discharge socket of the discharge socket 8, the elastic buckle 82 at the discharge socket will undergo elastic deformation (such as shrinking inward) as the plug is inserted. When the plug is inserted to the preset depth, the locking groove 23 on the outer wall of the lower housing 2 is precisely aligned with the position of the elastic buckle 82. The elastic buckle 82 resets under its own elastic restoring force and is embedded in the locking groove 23, forming a mechanical snap-fit ​​structure, thereby fastening the plug to the discharge socket.

[0039] b. When it is necessary to unplug the plug, the user presses the button 83, which is linked to the elastic buckle 82 near the discharge socket on the discharge socket 8. The button 83 drives the elastic buckle 82 to deform in the direction of disengaging from the locking groove 23 through mechanical transmission, so that the elastic buckle 82 completely exits the locking groove 23, releasing the fastening constraint between the plug and the discharge socket. At this time, the user can smoothly pull the plug out of the discharge socket, completing the unlocking and plugging / unplugging operation.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A plug structure for a discharge connector, comprising a housing, pins disposed at the bottom of the housing, and two fixed probes and a temperature sensing element disposed inside the housing, characterized in that, The housing includes an upper housing, a lower housing, and a pin bracket assembled on the lower housing; The pin bracket is provided with several pin fixing holes for pins to pass through, and the lower surface of the pin fixing holes is provided with protruding plug-in parts. The lower housing is provided with several corresponding pin holes, and the plug-in parts are inserted into the corresponding pin holes. The pin bracket is also provided with two probe fixing ports for mounting the fixed probe, and the lower housing is provided with two corresponding probe holes; The pin bracket is equipped with a component holder, which has a receiving groove for assembling the temperature sensing element. The component holder has symmetrical positioning slots on both sides, and the positioning slots are limited and connected to the pin end on the same side.

2. The plug structure for a discharge socket according to claim 1, characterized in that, The plug structure is a three-prong plug structure, including a live wire pin, a neutral wire pin, and a ground pin; the plurality of pin fixing ports are respectively for the live wire pin, the neutral wire pin, and the ground pin to pass through; the lower housing is correspondingly provided with a live wire pin hole, a neutral wire pin hole, and a ground pin hole.

3. The plug structure for a discharge socket according to claim 2, characterized in that, The two probe fixing ports are symmetrically arranged on both sides of the grounding fixing port; the two positioning slots on both sides of the component seat are respectively limited and connected to the end of the live wire pin and the end of the neutral wire pin.

4. The plug structure for a discharge socket according to claim 1, characterized in that, The outer periphery of the plug part is provided with a rubber ring groove, and an elliptical waterproof sealing ring is installed in the rubber ring groove.

5. The plug structure for a discharge socket according to claim 1, characterized in that, The probe fixing port is provided with a recessed groove below the hole, and the fixed probe is provided with a limiting protrusion. The fixed probe is inserted into the probe fixing port from bottom to top and the limiting protrusion is embedded in the recessed groove.

6. The plug structure for a discharge socket according to claim 5, characterized in that, The lower section of the fixed probe is fitted with a circular waterproof sealing ring. When the pin bracket is assembled on the lower housing, the lower section of the fixed probe is inserted into the probe hole and the circular waterproof sealing ring is clamped between the limiting protrusion and the lower housing.

7. The plug structure for a discharge socket according to claim 1, characterized in that, The upper housing is provided with an inlet channel for the power supply gun cable to enter, and the lower housing is provided with a U-shaped notch corresponding to the inlet channel. When the upper housing and the lower housing are fastened together, the end of the inlet channel is engaged with the U-shaped notch.

8. The plug structure for a discharge socket according to claim 1, characterized in that, The inner walls of the lower housing on opposite sides are provided with snap-fit ​​protrusions. The upper surface of the snap-fit ​​protrusion is a guide slope, and its lower surface is a rectangular surface. The pin bracket is provided with a rectangular block corresponding to the snap-fit ​​protrusion. The rectangular block abuts against the lower surface of the snap-fit ​​protrusion to fix the pin bracket.

9. The plug structure for a discharge socket according to claim 1, characterized in that, The lower surface of the component holder is provided with a pin, and the pin bracket is provided with a pin hole. The component holder is installed on the pin bracket by inserting the pin into the pin hole.

10. The plug structure for a discharge socket according to claim 1, characterized in that, The outer wall of the lower housing is provided with a locking groove, which is used to engage with the elastic buckle of the discharge connector.

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