A charging gun socket

Abstract

The application relates to a charging gun socket and relates to the technical field of new energy charging gun sockets, which comprises a shell and a terminal, a socket hole for inserting a charging gun is formed in the shell, a mounting hole is formed through an end wall of the socket hole, the front end of the terminal penetrates through the mounting hole and extends into the socket hole, a boss is integrally formed at the rear end of the terminal, the outer wall of the boss is attached to the inner wall of the mounting hole, the middle part of the terminal is clamped at the socket hole, and the mounting hole is independently sealed. The application has the effects of reducing the manufacturing cost of the new energy charging gun socket, simplifying the assembly process and guaranteeing the stability and reliability of terminal fixation.

Description

Technical Field

[0001] This application relates to the field of new energy charging gun socket technology, and in particular to a charging gun socket. Background Technology

[0002] With the development and popularization of new energy vehicles, the demand for new energy charging gun sockets is also increasing. In recent years, as the manufacturing industry has raised its requirements for cost control and efficiency improvement, simplifying the structure of new energy charging gun sockets has become an important research direction in the industry.

[0003] New energy charging gun sockets typically have terminals. These terminals serve as electrical connections and the medium for energy transmission, making their stability and reliability crucial. In existing technologies, new energy charging gun sockets usually use a back cover to fix the terminals. The socket includes a housing, terminals, and a back cover. A large-diameter boss needs to be machined on the terminals. The back cover fits the rear end of the terminals. After assembling the housing and back cover, the housing constrains the front end of the terminals, and the back cover constrains the rear end. The housing and back cover together clamp and fix the boss, thus securing the terminals.

[0004] In the process of developing this application, it was found that the technology has at least the following problems: Although the technology is reliable in fixing the terminals, it also brings additional manufacturing costs and complexity. For example, it requires the separate production of a back cover and the design of a structure for assembling the back cover and the housing. In addition, there are many sealing nodes. Therefore, the technology has a relatively large number of parts, a relatively complicated assembly process, and a relatively high cost. Utility Model Content

[0005] In order to reduce the manufacturing cost of new energy charging gun sockets and simplify the assembly process while ensuring the stability and reliability of terminal fixing, this application provides a charging gun socket.

[0006] The charging gun socket provided in this application adopts the following technical solution: A charging gun socket includes a housing and terminals. The housing has a socket for inserting a charging gun. A mounting hole is formed through the end wall of the socket. The front end of the terminal passes through the mounting hole and extends into the socket. The rear end of the terminal is integrally formed with a boss. The outer wall of the boss fits against the inner wall of the mounting hole. The middle part of the terminal is snapped into the socket. The mounting hole is independently sealed.

[0007] By adopting the above technical solution, there is no need for an additional back cover. The terminal is positioned axially by engaging with the housing at its center, and radially by the engagement of the boss with the mounting hole. This achieves bidirectional constraint and fixation of the terminal within the housing, ensuring stability and reliability while reducing the production and assembly steps of the back cover, lowering manufacturing costs, shortening assembly time, and simplifying the overall structure. The terminal design eliminates the need for a central boss in existing technologies. Although both types of terminals have bosses, they differ in several ways: Traditional terminals require a central boss, requiring internal support structures and a back cover for clamping and restraint. This also necessitates machining a relatively large-diameter boss, requiring a larger diameter raw material and significant milling of the portion excluding the boss, resulting in substantial waste. Furthermore, the independent sealing of the mounting hole significantly increases creepage distance and improves product safety. Even in extreme environments where partial seal failure occurs, the product maintains its functionality and safety. In this application, the rear end of the terminal boss can also be processed together with the wire to be connected, such as by pressing or shaping through stamping, so that the terminal and the wire can be quickly connected, further reducing costs.

[0008] Preferably, the terminal has a snap-fit ​​groove, and the housing has an integrally formed snap-fit ​​part. The snap-fit ​​part extends into the snap-fit ​​groove and abuts against the side wall of the snap-fit ​​groove. The snap-fit ​​part is inclined. One end of the snap-fit ​​part is connected to the mounting hole, and the other end of the snap-fit ​​part extends into the insertion hole and extends towards the axis of the mounting hole. A pulling member is provided in the insertion hole. The pulling member is used to drive the snap-fit ​​part away from the axis of the mounting hole.

[0009] By adopting the above technical solution, the terminal is positioned in the axial direction by utilizing the one-piece molded snap-fit ​​part on the housing and the snap-fit ​​groove of the terminal. The inclined snap-fit ​​part naturally extends into the snap-fit ​​groove, with a natural clamping tendency, while the pulling component can drive the snap-fit ​​part away from the axis of the mounting hole under the action of external force, thereby opening it up, which facilitates the re-extraction of the terminal and makes it easy to replace the terminal; after the terminal is reassembled, the snap-fit ​​part naturally returns to its original position and snaps into the snap-fit ​​groove, which not only improves the convenience of terminal installation and removal, but also does not affect the snap-fit ​​fixing effect.

[0010] Preferably, the actuating component includes a connector, which is a long strip-shaped structure. One end of the connector is connected to the inner wall of the insertion hole, and the other end of the connector is connected to the snap-fit ​​part. The connector is deformable.

[0011] By adopting the above technical solution, the connector is connected between the housing and the snap-fit ​​part, which has a simple structure and does not require additional assembly parts; its deformable characteristics make it possible for the two ends of the connector to bend when the connector is pressed with a tool, and the strength of the snap-fit ​​part is lower than that of the socket, which forces the snap-fit ​​part to move towards the inner wall of the socket. In this way, the snap-fit ​​part is forced away from the axis of the mounting hole and disengaged from the snap-fit ​​groove, making it easy to remove the terminal from the mounting hole.

[0012] Preferably, a stop is integrally formed on the end wall of the socket, the stop being used to abut against the charging gun and prevent the charging gun from contacting the connector.

[0013] By adopting the above technical solution, the stop block can limit the insertion of the charging gun, forming a physical barrier to prevent the charging gun from directly contacting or squeezing the connector when it is inserted. This prevents the connector from being accidentally deformed by external force, causing the locking part to detach from the locking groove, which would result in unstable terminal fixation. In addition, it also prevents the connector from being damaged by frequent contact with the charging gun, ensuring that the traction effect of the connector on the locking part is stable and reliable, and extending the service life of the product.

[0014] Preferably, the snap-fit ​​groove is formed along the circumferential direction of the terminal surface, and the snap-fit ​​portion is arranged circumferentially around the mounting hole.

[0015] By adopting the above technical solution, the multiple circumferentially distributed locking parts can apply force from multiple points around the terminal. Combined with the annular locking groove, the axial clamping force on the terminal is more balanced, avoiding localized force on the terminal and thus improving the stability of the terminal fixation and ensuring the reliability of the electrical connection.

[0016] Preferably, the side wall of the snap-fit ​​portion away from the insertion hole is an inclined surface, and the terminal can abut against the inclined surface and push the snap-fit ​​portion away from the axis of the mounting hole.

[0017] By adopting the above technical solution, the inclined surface plays a guiding role. When the terminal is inserted into the mounting hole, the terminal and the inclined surface are in contact and generate a lateral thrust. Without additional operation, the snap-fit ​​part can be automatically opened, realizing the quick insertion and assembly of the terminal, which greatly improves the assembly efficiency and has a simple structure.

[0018] Preferably, a first sealing ring is fitted on the boss, and the outer wall of the first sealing ring contacts and abuts against the inner wall of the mounting hole.

[0019] By adopting the above technical solution, the first sealing ring fills the gap between the boss and the inner wall of the mounting hole, forming a seal that prevents external dust, moisture and other impurities from entering the socket. This avoids problems such as short circuits or poor contact caused by moisture or dust accumulation on the back end of the terminal, thus improving the waterproof and dustproof performance and safety of the product.

[0020] Preferably, the boss is provided with a positioning groove, and the first sealing ring is fitted inside the positioning groove.

[0021] By adopting the above technical solution, the positioning groove plays a limiting and fixing role for the first sealing ring, preventing the first sealing ring from rubbing against the mounting hole during assembly and thus shifting, and preventing the first sealing ring from falling off or becoming unstable due to vibration, insertion and removal during use, thus ensuring the sealing effect and further improving the reliability of the product.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting mounting holes, bosses, snap-fit ​​grooves, snap-fit ​​parts, and inclined surfaces, radial constraint positioning of the terminals can be achieved without an additional back cover. The axial snap-fit ​​positioning and bidirectional constraint together ensure the reliability of the fixation. The inclined surface allows the snap-fit ​​part to be automatically pushed open when the terminal is inserted into the housing, making the terminal assembly fast. While ensuring the stability and reliability of the terminal fixation, the manufacturing cost of the new energy charging gun socket is reduced and the assembly process is simplified. 2. By setting connectors and stops, the connectors can open the snap-fit ​​part through deformation, so as to facilitate the disassembly of the terminals without the need for additional assembly parts; the stops can limit the insertion of the charging gun and prevent the charging gun from contacting the connectors, so as to avoid accidental deformation or damage to the connectors, ensure the stable fixing effect of the snap-fit ​​part, and extend the service life of the product. 3. By setting a first sealing ring and a positioning groove, the first sealing ring fills the gap between the boss and the inner wall of the mounting hole, which plays a role in waterproofing and dustproofing, and prevents impurities from entering and causing terminal circuit failure; the positioning groove limits and fixes the first sealing ring, preventing it from shifting or falling off during assembly or use, ensuring a long-lasting and reliable sealing effect, and improving the safety and durability of the product. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a charging gun socket provided in the embodiments of this application.

[0024] Figure 2 This is a cross-sectional structural diagram of a charging gun socket provided in an embodiment of this application.

[0025] Figure 3 yes Figure 2 Enlarged view of section A.

[0026] Figure 4 This is an exploded structural diagram of a charging gun socket provided in an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Insertion hole; 12. Mounting hole; 13. Snap-fit ​​part; 131. Inclined surface; 132. Limiting surface; 14. Connector; 15. Stop; 2. Terminal; 21. Boss; 211. Positioning groove; 22. Snap-fit ​​groove; 23. Protrusion; 3. First sealing ring; 4. Second sealing ring. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0029] This application discloses a charging gun socket. (Refer to...) Figures 1 to 3 The device includes a housing 1 and terminals 2. The front end of the housing 1 has several horizontally oriented insertion holes 11 for inserting a charging gun. In this embodiment, the insertion holes 11 are divided into seven AC insertion holes 11 located at the top and two DC insertion holes 11 located at the bottom. The rear end of the housing 1 has a horizontally oriented mounting cavity. Mounting holes 12 extending into the mounting cavity are formed through the end walls of the insertion holes 11. The front end of the terminals 2 passes through the mounting holes 12 and extends into the insertion holes 11. The rear end of the terminals 2 has an integrally formed boss 21, the outer wall of which fits against the inner wall of the mounting holes 12, achieving radial positioning of the terminals 2 and preventing radial wobbling of the terminals 2.

[0030] Reference Figure 1 and Figure 4 A second sealing ring 4 is provided at the end of the mounting cavity away from the socket, and the second sealing ring 4 is used to seal the end of the mounting cavity away from the socket. In this embodiment, the mounting cavities corresponding to the two terminals of the DC part of the charging gun socket share one second sealing ring 4, but the mounting cavities of the two terminals are separated by a partition, forming two independent mounting cavity chambers, with each terminal located in its own chamber. The mounting cavities corresponding to the seven terminals of the AC part of the charging gun socket are each provided with a separate, non-interfering second sealing ring 4, and are independent of each other.

[0031] Reference Figure 2 and Figure 3 The terminal 2 is snapped into the socket 11 at its center. Specifically, the terminal 2 has a snap-fit ​​groove 22. In this embodiment, the terminal 2 also has an integrally formed protrusion 23, and the axes of the terminal 2, protrusion 23, and boss 21 coincide. The outer diameter of the protrusion 23 is larger than the outer diameter of the terminal 2, but smaller than the outer diameter of the boss 21. The snap-fit ​​groove 22 is formed on the outer wall of the protrusion 23 and is formed along the circumferential direction of the surface of the terminal 2. The housing 1 has an integrally formed snap-fit ​​part 13, which is circumferentially arranged around the mounting hole 12. In this embodiment, there are three snap-fit ​​parts 13, which extend into the snap-fit ​​groove 22 and abut against the side wall of the snap-fit ​​groove 22.

[0032] Reference Figure 2 and Figure 3 The latching portion 13 is inclined, and its length direction intersects the axial direction of the terminal 2. One end of the latching portion 13 is connected to the mounting hole 12, and the other end of the latching portion 13 extends into the insertion hole 11 and extends towards the axis of the mounting hole 12. The side wall of the latching portion 13 away from the insertion hole 11 is an inclined surface 131. The front end of the protrusion 23 on the terminal 2 can abut against the inclined surface 131 and push the latching portion 13 away from the axis of the mounting hole 12. The side wall of the latching portion 13 away from the insertion hole 11 is also provided with a limiting surface 132, which can abut against the front end of the protrusion 21.

[0033] Reference Figure 2 and Figure 3 When assembling terminal 2, terminal 2 is pushed into mounting hole 12 from mounting cavity at the rear end of housing 1, so that the front end of terminal 2 extends into insertion hole 11. During the pushing process, the front end of protrusion 23 on terminal 2 abuts against inclined surface 131. Inclined surface 131 converts the pushing force on terminal 2 into an outward pushing force of locking part 13, thereby pushing locking part 13 away from the axis of mounting hole 12. When terminal 2 moves to the point where locking groove 22 is opposite to locking part 13, locking part 13 resets and extends into locking groove 22. At this time, the front side wall of locking groove 22 abuts against the front end of locking part 13, restricting the backward movement of terminal 2. Limiting surface 132 abuts against the front end of boss 21, restricting the forward movement of terminal 2. In this way, the front and rear positioning of terminal 2 in the axial direction is achieved. Furthermore, the terminal 2 is constrained and fixed both radially and circumferentially within the housing 1, which not only ensures the stability and reliability of the terminal 2 fixation, but also reduces the production and assembly steps of the back cover, lowers manufacturing costs, shortens assembly time, and simplifies the overall structure.

[0034] To facilitate the removal of terminal 2 from mounting hole 12, refer to... Figure 2 and Figure 3 An actuating element is provided inside the socket 11 to drive the latching part 13 away from the axis of the mounting hole 12. Specifically, the actuating element includes a connector 14, which is a long strip-shaped structure. One end of the connector 14 is integrally connected to the inner wall of the socket 11, and the other end is integrally connected to the latching part 13. The connector 14 is deformable. A stop 15 is integrally formed on the end wall of the socket 11. The stop 15 is used to abut against the charging gun and prevent the charging gun from contacting the connector 14.

[0035] Reference Figure 2 and Figure 3When terminal 2 is bent or damaged, a tool (which can be a tubular piece with a notch at the end to avoid block 15) is inserted into the socket 11. The tool presses down on the connector 14, causing it to bend. The distance between the two ends of the connector 14 is shortened after bending. The strength of the snap-fit ​​part 13 is lower than that of the socket 11, forcing the snap-fit ​​part 13 to move towards the inner wall of the socket 11 and disengage from the snap-fit ​​groove 22. This makes it easier to remove terminal 2 from the mounting hole 12 and replace it.

[0036] To prevent dust, moisture, and other impurities from entering the socket, refer to Figure 2 and Figure 3 The mounting hole is independently sealed. A first sealing ring 3 is fitted on the boss 21, and the outer wall of the first sealing ring 3 contacts and abuts against the inner wall of the mounting hole 12. Specifically, a positioning groove 211 is provided on the boss 21, and the first sealing ring 3 is fitted into the positioning groove 211. The positioning groove 211 limits and fixes the first sealing ring 3, preventing it from shifting. The first sealing ring 3 fills the gap between the boss 21 and the inner wall of the mounting hole 12, forming a seal and sealing the front end of the mounting cavity. The first sealing ring 3 and the second sealing ring 4 work together to form a closed space in the mounting cavity, which can prevent external dust, moisture and other impurities from entering the socket, avoiding short circuits or poor contact problems caused by moisture or dust accumulation on the rear circuit of the terminal 2, and improving the waterproof and dustproof performance and safety of the product.

[0037] The implementation principle of a charging gun socket according to an embodiment of this application is as follows: When assembling the terminal 2, the terminal 2 is pushed into the mounting hole 12 from the mounting cavity at the rear end of the housing 1, so that the front end of the terminal 2 extends into the insertion hole 11. During the pushing process, the front end of the protrusion 23 on the terminal 2 abuts against the inclined surface 131. The inclined surface 131 converts the pushing force on the terminal 2 into an outward pushing force of the locking part 13, thereby pushing the locking part 13 away from the axis of the mounting hole 12. When the terminal 2 moves to the point where the locking groove 22 is opposite to the locking part 13, the locking part 13 resets and extends into the locking groove 22. At this time, the front side wall of the locking groove 22 abuts against the front end of the locking part 13, restricting the backward movement of the terminal 2. The limiting surface 132 abuts against the front end of the boss 21, restricting the forward movement of the terminal 2. In this way, the terminal 2 is positioned back and forth in the axial direction. Furthermore, the terminal 2 is constrained and fixed both radially and circumferentially within the housing 1, which not only ensures the stability and reliability of the terminal 2 fixation, but also reduces the production and assembly steps of the back cover, lowers manufacturing costs, shortens assembly time, and simplifies the overall structure.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A charging gun socket comprising a shell (1), a terminal (2), a socket hole (11) is formed on the shell (1) for inserting the charging gun, a mounting hole (12) is formed through the end wall of the socket hole (11), characterized in that: The front end of the terminal (2) passes through the mounting hole (12) and extends into the insertion hole (11). The rear end of the terminal (2) is integrally formed with a boss (21). The outer wall of the boss (21) fits against the inner wall of the mounting hole (12). The middle part of the terminal (2) is snapped into the insertion hole (11). The mounting hole (12) is independently sealed.

2. The charging gun socket according to claim 1, characterized in that: The terminal (2) has a snap-fit ​​groove (22), and the housing (1) has a snap-fit ​​part (13) integrally formed. The snap-fit ​​part (13) extends into the snap-fit ​​groove (22) and abuts against the side wall of the snap-fit ​​groove (22). The snap-fit ​​part (13) is inclined. One end of the snap-fit ​​part (13) is connected to the mounting hole (12), and the other end of the snap-fit ​​part (13) extends into the insertion hole (11) and extends towards the axis of the mounting hole (12). A pulling member is provided in the insertion hole (11). The pulling member is used to drive the snap-fit ​​part (13) away from the axis of the mounting hole (12).

3. A charging gun socket according to claim 2, characterized in that: The actuating component includes a connector (14), which is a long strip structure. One end of the connector (14) is connected to the inner wall of the insertion hole (11), and the other end of the connector (14) is connected to the snap-fit ​​part (13). The connector (14) is deformable.

4. The charging gun socket of claim 3, wherein: A stop (15) is integrally formed on the end wall of the socket (11). The stop (15) is used to abut against the charging gun and prevent the charging gun from contacting the connector (14).

5. The charging gun receptacle of claim 2, wherein: The snap-fit ​​groove (22) is opened along the circumferential direction of the surface of the terminal (2), and the snap-fit ​​part (13) is arranged circumferentially around the mounting hole (12).

6. The charging gun socket of claim 2, wherein: The side wall of the snap-fit ​​part (13) away from the insertion hole (11) is an inclined surface (131). The terminal (2) can abut against the inclined surface and push the snap-fit ​​part (13) away from the axis of the mounting hole (12).

7. The charging gun socket of claim 1, wherein: The boss (21) is fitted with a first sealing ring (3), and the outer wall of the first sealing ring (3) contacts and abuts against the inner wall of the mounting hole (12).

8. A charging gun socket according to claim 7, characterized in that: The boss (21) has a positioning groove (211) and the first sealing ring (3) is fitted inside the positioning groove (211).

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