Injection molding integrated charging gun

Abstract

The utility model provides an injection molding integrated charging gun, the charging gun comprises a charging gun body, a contact assembly and a lock catch assembly, the charging gun body is in an integrated structure and comprises a front shell and a rear shell, the rear shell is a solid shell formed by injection molding, the front shell comprises an insertion section located at the front section and an embedding section located at the rear section, and the insertion section is located at the rear section. The insertion section can be matched with a charging port of the electric vehicle, and the embedding section is embedded in the front end of the rear shell when the rear shell is subjected to injection molding; the lock catch assembly is arranged on the charging gun body, the front section of the lock catch assembly is installed in the embedding section of the front shell, and the rear section of the lock catch assembly is embedded in the rear shell when the rear shell is subjected to injection molding. According to the charging gun, an independent two-body buckling type shell is not needed, and only the charging gun front shell and the lock catch assembly need to be combined for injection molding of the entity type charging gun body. The LED lamp has the advantages of being simple in assembly process, good in waterproofness, high in production efficiency and low in cost, and fastening installation of components and the like can be achieved without fasteners.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle charging guns, in particular to an injection-molded integrated charging gun. Background Art

[0002] With the rapid development of new energy vehicles, the number of industrial charging interfaces is increasing. At present, most of the charging guns used for charging new energy vehicles on the market are two-body snap-on type, with many components. In order to assemble and match the parts, various complex structures need to be set inside the shell. The assembly also requires a large number of fasteners to fasten and fix, which makes the assembly process complicated and difficult, and requires a considerable amount of material cost and assembly time cost. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide an injection-molded integrated charging gun, in which the rear shell of the charging gun is a solid structure formed by injecting insulating material on the rear of the front shell. The utility model is used to improve the difficulties of the existing technology, which is complex in structure and difficult to assemble. The charging gun does not require an independent two-body snap-on shell, but only requires the front shell of the charging gun and the lock assembly to be combined with an injection-molded solid charging gun body. The charging gun has a simple composition, a simple assembly process, and good waterproof performance. Compared with the existing charging guns, it has the characteristics of simple composition, no need for fasteners to fasten and install components, high production efficiency, and low cost.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] An injection-molded integrated charging gun, comprising:

[0006] The charging gun body is an integrated structure, including a front shell and a rear shell, the rear shell is a solid shell formed by injection molding, the front shell includes an insertion section located at the front section and a fitting section located at the rear section, the insertion section can be adapted to the charging port of the electric vehicle, and the fitting section is embedded in the front end of the rear shell when the rear shell is injection molded;

[0007] The contact assembly is arranged in the charging gun body;

[0008] The lock assembly is arranged on the charging gun body, the front section of which is installed in the engaging section of the front shell, and the rear section is embedded in the rear shell when the rear shell is injection molded.

[0009] Furthermore, an installation groove for installing a locking assembly is provided on the charging gun body, and the installation groove includes a platform groove provided on the front shell and a matching groove provided on the rear shell and aligned with the platform groove. The platform groove is provided on the outer wall of the engaging section, and the matching groove is formed during the injection molding of the rear shell.

[0010] Furthermore, the lock assembly includes a button, a lock, a torsion spring, a lock shell, a fixed pin tail buckle cover and a micro switch. The lock shell cooperates with the mounting groove, the lock is hinged on the lock shell through the torsion spring and the fixed pin, the button is installed on the lock shell and is located above the tail of the lock, the tail of the lock shell is provided with a mounting hole, the micro switch is arranged in the mounting hole, and is fastened and fixed on the lock shell by the tail buckle cover, and the lock is provided with a structure that presses and cooperates with the micro switch to realize the triggering of the micro switch.

[0011] Furthermore, the rear section of the matching groove has a countersunk hole matching with the micro switch.

[0012] Furthermore, a groove-protrusion matching structure is provided on the side surface of the lock housing and the side wall of the platform groove.

[0013] Furthermore, the groove-protrusion matching structure is a forced-fitting structure.

[0014] Furthermore, a plurality of injection molding grooves distributed along the extension direction of the charging gun body are provided on the outer wall of the engaging section.

[0015] Furthermore, the contact assembly includes a plurality of pins and cables connected to the pins, the pins are forcibly installed in the front shell, and the portion of the cable located in the rear shell is tightly wrapped by the injection molding insulating material when the rear shell is injection molded.

[0016] Furthermore, a stepped hole for installing a pin is provided in the front shell body, including a small hole section at the front end and a large hole section at the rear end. The outer circle of the pin is provided with a barb structure matching with the small hole section and a positioning platform matching with the large hole section, and the positioning platform abuts against the rear end surface of the small hole section.

[0017] Furthermore, it also includes a dust cover that can be connected to the charging gun body through a connecting rope and matches with the insertion end of the front shell.

[0018] Beneficial effects:

[0019] As described above, the injection-molded integrated charging gun of the utility model has the following beneficial effects:

[0020] (1) The charging gun of the utility model is composed of a charging gun body, a locking assembly, and a contact assembly. The charging gun body includes a front shell and a rear shell. The front shell includes an insertion section located at the front section and a fitting section located at the rear section. The fitting section is provided with a platform groove for installing the locking assembly. The contact assembly includes a plurality of pins and cables connected to the pins. When preparing the charging gun, the locking assembly is installed in the platform groove of the front shell, and the contact assembly is installed on the front shell. Then, the assembled components are placed in an injection mold for integral injection molding to form a solid rear shell that can wrap the rear section of the front shell, the locking assembly, and the cable. The rear shell completely fills the cavity at the rear of the entire front shell through the injection molding process, and wraps the front shell, the locking assembly, and the cable, thereby ensuring the waterproof function of the charging gun, and there is no need to fasten the gun body with various fastening parts. Its solid structure can also ensure that the charging gun body has sufficient strength and can ensure the grip during charging. During the injection molding process of the injection mold, the cable is tightly wrapped by the insulating material to achieve cable fixation.

[0021] (2) The platform groove feature at the upper end of the front shell of the utility model forms a support frame, and the lock assembly is pre-fixed on the platform groove through the groove and protrusion matching structure, and is wrapped by the rear shell, which does not affect the function and reduces the use of fasteners.

[0022] (3) A stepped hole for installing a plug pin is provided in the front shell, including a small hole section at the front end and a large hole section at the rear end. The outer circle of the plug pin is provided with a barb structure matching the small hole section and a positioning platform matching the large hole section. The positioning platform abuts against the rear end surface of the small hole section. On the one hand, it can ensure that the rear shell is completely filled with the cavity of the rear section of the front shell during injection molding, thereby ensuring the fixation and stability of the contact assembly without the need for fasteners for fixed installation; on the other hand, the insulating material will not flow through the stepped hole into the insertion section of the front shell, thereby ensuring the use effect of the charging gun.

[0023] (4) In the utility model, an injection molding groove matching with the rear shell is provided on the outer wall of the fitting section of the front shell. When the rear shell is injection-molded, the insulating material will not only flow into the cavity of the fitting section, but also flow into the injection molding groove of the outer wall of the fitting section, thereby strengthening the connection between the front and rear shells and preventing the rear shell from falling off.

[0024] (5) A micro switch is provided in the lock assembly of the utility model. By cooperating with the lock, when the lock is pressed and released, the micro switch transmits different signals to realize the power-off function after unlocking, ensuring that the charging process is not plugged in or out while the power is on.

[0025] (6) The charging gun in the present invention is combined with a rear shell, a front shell and a locking assembly through injection molding of a solid structure, and the protection level of the conductive parts inside the gun body can be achieved without the need for sealing mechanisms such as sealing rings.

[0026] (7) The charging gun in the utility model has a simple structure, a simple assembly process, and good waterproof performance. Compared with the existing charging guns, it has the characteristics of simple structure, no need for fasteners to fasten and install components, high production efficiency and low cost.

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of the charging gun in the utility model.

[0030] Figure 2 It is an exploded view of the charging gun in the utility model.

[0031] Figure 3 It is an exploded view of the front housing of the utility model.

[0032] Figure 4 It is an exploded view of the lock assembly in the utility model.

[0033] Figure 5 It is a cross-sectional view of the lock assembly in the utility model.

[0034] Figure 6 It is a schematic diagram of the injection molding process of the charging gun in the utility model.

[0035] Graphic markings, 1. front shell, 11. insertion section, 12. rubber stopper, 13. fitting section, 101. through hole, 102. platform groove, 1021. groove, 103. step hole, 104. injection molding groove, 2. latch assembly, 21. button, 22. latch, 23. torsion spring, 24. latch shell, 241. protrusion, 25. fixing pin, 26. tail buckle cover, 27. micro switch, 3. rear shell, 31. matching groove, 4. dust cover, 5. contact assembly, 51. pin, 511. barb structure, 512. positioning table, 52. cable, 6. injection molding mold.

[0036] Figure 6 A in the figure indicates the injection molding feed port. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings, i.e., embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0038] In the description of the present utility model, directional terms such as "up", "down", "left", "right", "front" and "back" mentioned in the text are only used to express relative position relationships relative to the drawings. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Please refer to Figure 1 and Figure 2 , Figure 1 The figure is a schematic diagram of the structure of the charging gun provided by the utility model. Figure 2 This is an exploded view of the charging gun provided by the utility model. The utility model provides an injection-molded integrated charging gun, which consists of a charging gun body, a locking assembly 2, and a contact assembly 5. The specific structure of each assembly is described in detail below.

[0041] Please refer to Figures 1 to 3 The charging gun body includes a front shell 1 and a rear shell 3. The rear shell 3 is a solid shell structure formed by injection molding of insulating material. The front shell 1 is a prefabricated one-piece molded part. A rubber stopper 12 is provided in the middle of the front shell 1. The front shell 1 is divided into an insertion section 11 located at the front section and a fitting section 13 located at the rear section by the rubber stopper 12. The insertion section 11 can be adapted to the charging port of a new energy vehicle. The fitting section 13 is embedded in the front end of the rear shell 3 during injection molding of the rear shell 3. The rubber stopper 12 can prevent the insulating material of the rear shell 3 from flowing to the insertion section 11 of the front shell 1 during the injection molding process. Of course, it is also possible not to set the rubber stopper 12 on the front shell 1 and directly set a parting surface in the injection mold 6 to prevent the insulating material from flowing to the front end of the charging gun body.

[0042] The contact assembly includes a plurality of pins 51 and cables 52 connected to the pins 51 . The pins 51 are forcibly installed in the front housing 1 . The portion of the cable 52 located in the rear housing 3 is tightly wrapped by insulating material during injection molding of the rear housing 3 .

[0043] Please refer to Figure 4 and Figure 5 The front section of the locking assembly 2 is installed in the fitting section 13 of the front housing 1, and the rear section is embedded in the rear housing 3 when the rear housing 3 is injection molded. The lock assembly 2 includes a button 21, a lock 22, a torsion spring 23, a lock housing 24, a fixed pin 25, a tail cover 26 and a micro switch 27. The button 21, lock 22, torsion spring 23, fixed pin 25, tail cover 26 and micro switch 27 are all installed in the internal space of the lock housing 24. The lock 22 is hinged on the lock housing 24 through the torsion spring 23 and the fixed pin 25. The button 21 is installed on the lock housing 24 and is located above the tail of the lock 22. The tail of the lock housing 24 is provided with a mounting hole. The micro switch 27 is arranged in the mounting hole and is fastened and fixed on the lock housing 24 through the tail cover 26. The lock 22 is provided with a structure that is pressed and matched with the micro switch 27 to realize the triggering of the micro switch 27. The tail of the matching groove 31 has a countersunk hole that matches the micro switch 27, and the countersunk hole is also formed when the rear housing 3 is injected.

[0044] It should be noted that the charging gun body is provided with an installation groove for installing the lock assembly 2, and the installation groove includes a platform groove 102 provided on the front shell 1 and a matching groove 31 provided on the rear shell 3 and aligned with the platform groove 102. The platform groove 102 is provided on the outer wall of the fitting section on the front shell 1, and the matching groove 31 is formed during the injection molding of the rear shell 3. Among them, the platform groove 102 plays a role in pre-fixing the lock assembly 2 to ensure that the front shell 1 and the lock assembly 2 can be pre-assembled into a whole, and then the whole is placed in the injection mold 6.

[0045] It should be noted that the side of the lock housing 24 and the side wall of the platform groove 102 are provided with a groove-protrusion matching structure to achieve the pre-fixation of the lock housing 24 and the front housing 1. Figure 3 and Figure 4 The side of the lock housing 24 is provided with a protrusion 241, and the support plate is provided with a groove 1021, which can ensure the matching installation of the lock assembly 2 and the charging gun body. Preferably, the groove and protrusion matching structure provided on the side of the lock housing 24 and the side wall of the platform groove 102 can be set as a forced matching structure, which can prevent the lock housing 24 from moving relative to the front housing 1.

[0046] Specifically, Figure 6The figure shows a schematic diagram of the injection molding process of the charging gun. When preparing the charging gun, the locking assembly 2 is installed in the platform groove 102 of the front shell 1, and the contact assembly 2 is installed on the front shell 1. Then, the assembled components are placed in the injection mold 6 for integral injection molding. The interlocking section 13 of the front shell 1, the lower part of the locking assembly 2, and the cable 52 are tightly wrapped with insulating material to form a solid rear shell 3; the rear shell 3 completely fills the cavity of the entire interlocking section 13 of the front shell 1, and wraps the front shell 1 and the locking assembly 2. The solid injection molding of the rear shell 3 and the front shell 1 ensures the waterproof function, and also ensures that the charging gun body has sufficient strength and can ensure the grip during charging. When the rear shell 3 is injected, the cable 52 is directly injection-molded and wrapped inside the solid shell to ensure the fixation of the cable 52. At the same time, the ground and side of the locking shell 24 of the locking assembly 2 can protect the internal space of the locking shell 24 to prevent the insulating material from flowing into the shell and damaging the components.

[0047] Preferably, a plurality of injection molding grooves 104 distributed along the extension direction of the charging gun body are provided on the outer wall of the embedding section 13. When the rear shell 3 is injection-molded, the insulating material will not only flow into the cavity of the embedding section 13, but also flow into the injection molding grooves 104 on the outer wall of the embedding section 13, thereby strengthening the connection between the front and rear shells 1, 3 and preventing the rear shell 3 from falling off.

[0048] Preferably, a stepped hole 103 for installing the plug pin 51 is provided in the front shell 1, and the stepped hole 103 includes a small hole section at the front end and a large hole section at the rear end. The outer circle of the plug pin 51 is provided with a barb structure 511 matching the small hole section and a positioning platform 512 matching the large hole section. The positioning platform 512 abuts against the rear end surface of the small hole section. On the one hand, it can ensure the fixed installation of the plug pin 51 and the front shell 1, and on the other hand, it can ensure that the rear shell 3 completely fills the rear section cavity of the front shell 1 during injection molding, thereby ensuring the fixation and stability of the contact assembly 5, and no fasteners are required for fixed installation; on the other hand, the insulating material will not flow into the insertion section 11 of the front shell 1 through the stepped hole 103, thereby ensuring the use effect of the charging gun.

[0049] As a preferred solution of the utility model, the charging gun body is provided with a dust cover 4 that matches the insertion end of the front shell 1. The dust cover 4 is connected to the charging gun body 1 through a connecting rope, and can protect the charging port of the charging gun body 1 when not in use. Specifically, the dust cover 4 is connected to the rear end of the rear shell 3 through a connecting rope.

[0050] The above is a detailed introduction to an injection-molded integrated charging gun provided by the utility model. This article uses specific examples to illustrate the principle and specific implementation of the utility model. The above embodiments are only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this field, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model fall within the protection scope of the utility model.

Claims

1. An injection-molded integrated charging gun, characterized in that: include: The charging gun body is an integrated structure, comprising a front shell (1) and a rear shell (3), wherein the rear shell (3) is a solid shell formed by injection molding, the front shell (1) comprises an insertion section (11) located at the front section and a fitting section (13) located at the rear section, the insertion section (11) being adaptable to the charging port of an electric vehicle, and the fitting section (13) being embedded in the front end of the rear shell (3) when the rear shell (3) is injection molded; A contact assembly (5) is disposed in the charging gun body; The lock assembly (2) is arranged on the charging gun body, the front section of which is installed in the engaging section (13) of the front shell (1), and the rear section is embedded in the rear shell (3) during the injection molding of the rear shell (3).

2. The injection-molded integrated charging gun according to claim 1, characterized in that: The charging gun body is provided with a mounting groove for mounting a locking assembly (2), the mounting groove comprising a platform groove (102) provided on the front shell (1) and a matching groove (31) provided on the rear shell (3) and aligned with the platform groove (102), the platform groove (102) being provided on the outer wall of the interlocking section (13), and the matching groove (31) being formed when the rear shell (3) is injection molded.

3. The one-piece injection-molded charging gun according to claim 2, characterized in that: The lock assembly (2) comprises a button (21), a lock (22), a torsion spring (23), a lock housing (24), a fixing pin (25), a tail cover (26) and a micro switch (27); the lock housing (24) cooperates with the mounting groove; the lock (22) is hinged on the lock housing (24) via the torsion spring (23) and the fixing pin (25); the button (21) is mounted on the lock housing (24) and is located above the tail of the lock (22); a mounting hole is provided at the tail of the lock housing (24); the micro switch (27) is arranged in the mounting hole and is fastened and fixed on the lock housing (24) via the tail cover (26); and the lock (22) is provided with a structure that presses and cooperates with the micro switch (27) to trigger the micro switch (27).

4. The one-piece injection-molded charging gun according to claim 3, characterized in that: The rear section of the matching groove (31) has a countersunk hole matching with the micro switch (27).

5. The one-piece injection-molded charging gun according to claim 3, characterized in that: The side surface of the lock housing (24) and the side wall of the platform groove (102) are provided with a groove-protrusion matching structure.

6. The one-piece injection-molded charging gun according to claim 5, characterized in that: The groove-protrusion matching structure is a forced-fitting matching structure.

7. An injection-molded integrated charging gun according to any one of claims 1 to 6, characterized in that: The outer wall of the engaging section (13) is provided with a plurality of injection molding grooves (104) distributed along the extension direction of the charging gun body.

8. An injection-molded integrated charging gun according to any one of claims 1 to 6, characterized in that: The contact assembly (5) comprises a plurality of plug pins (51) and cables (52) connected to the plug pins (51); the plug pins (51) are forcibly installed in the front housing (1); and the portion of the cable (52) located in the rear housing (3) is tightly wrapped by an injection molding insulating material during injection molding of the rear housing (3).

9. The one-piece injection-molded charging gun according to claim 8, characterized in that: The front housing (1) is provided with a stepped hole (103) for mounting a plug pin (51), comprising a small hole section at the front end and a large hole section at the rear end; the outer circumference of the plug pin (51) is provided with a barb structure (511) matching with the small hole section and a positioning platform (512) matching with the large hole section; the positioning platform (512) abuts against the rear end surface of the small hole section.

10. The injection-molded integrated charging gun according to claim 1, characterized in that: It also includes a dust cover (4) that can be connected to the charging gun body via a connecting rope and matches the insertion end of the front housing (1).

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