An ac charging gun
By connecting the gun head and the gun shell with an integrated snap-fit assembly, the problems of loosening and corrosion caused by traditional screw fixing structures are solved, realizing a simplified structure and reliable connection of the American standard AC charging gun, and reducing production and maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHANGJIAGANG UCHEN NEW ENERGY TECH CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-14
AI Technical Summary
The screw fixing structure of traditional American standard AC charging guns is prone to loosening and corrosion, leading to poor contact and safety hazards, and is also highly complex to produce and maintain.
The gun head and gun shell are connected by an integrally molded locking assembly, including a first locking assembly and a second locking assembly. The assembly uses elastic guide blocks, hook blocks and locking rings to replace traditional screws for fixing, so as to achieve a stable connection between the gun head, tail cap and gun shell.
The complexity of the charging gun structure has been reduced, resulting in fewer contact problems and safety hazards, lower production and maintenance costs and time, and improved connection reliability and stability.
Smart Images
Figure CN224502441U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of charging equipment, and in particular to a US standard AC charging gun. Background Technology
[0002] With the increasing popularity of electric vehicles, the demand for charging equipment has grown dramatically. As a key component in electric vehicle charging, the American standard AC charging gun's structural design and reliability directly impact charging efficiency and user experience.
[0003] Currently, most charging guns on the market use a traditional screw-fixing structure. While this meets basic functional requirements, long-term use can lead to problems such as screw loosening and corrosion, resulting in poor contact and even safety hazards. Furthermore, traditional screw structures require more tools and time for production and maintenance, increasing cost and complexity. Utility Model Content
[0004] To reduce the complexity of the charging gun structure, this application provides an American standard AC charging gun.
[0005] The American standard AC charging gun provided in this application adopts the following technical solution:
[0006] A US standard AC charging gun includes a gun housing with openings at both ends. One end of the gun housing opening is connected to a gun head, and the other end is connected to a tail cap. A first engaging component is provided between the gun head and the gun housing, and a second engaging component is provided between the tail cap and the gun housing. The first engaging component is integrally formed on the gun head, and the second engaging component is integrally formed on the tail cap.
[0007] By adopting the above technical solution, the gun head and gun shell, and the tail cover and gun shell are connected by an integrally molded snap-fit assembly, which avoids the traditional screw fixing structure, reduces the complexity of the charging gun structure, reduces poor contact and safety hazards caused by loose screws and corrosion, and at the same time reduces production and maintenance costs and complexity.
[0008] Preferably, the first engaging assembly includes a first elastic guide block and a first elastic hook block. The gun head has several elastic grooves. Multiple first elastic guide blocks and first elastic hook blocks are provided. Some of the elastic grooves contain the first elastic guide blocks, while others contain the first elastic hook blocks. One end of each first elastic guide block and first elastic hook block is connected to the inner wall of the corresponding elastic groove, and the other end has a gap with the inner wall of the corresponding elastic groove. Both the first elastic guide block and first elastic hook block protrude from the elastic groove. The inner wall of the gun casing near the gun head has a slot for the first elastic guide block to be embedded in and a hook slot for the first elastic hook block to be engaged.
[0009] By adopting the above technical solution, the gun head and the gun shell are connected by the engagement of the first elastic guide block and the first elastic hook block, which avoids the traditional screw fixing structure, reduces the complexity of the charging gun structure, reduces poor contact and safety hazards caused by problems such as loose screws and corrosion, reduces the tools and time required in the production and maintenance process, and lowers costs.
[0010] Preferably, the inner wall of the hook groove forms a hook surface for the first elastic hook block to hook onto.
[0011] By adopting the above technical solution, the gun head and the gun shell are connected by the first engaging component. The first elastic hook block of the first engaging component is engaged in the hook groove of the gun shell, and the inner wall of the hook groove forms a hook surface for the first elastic hook block to hook. This can reduce the complexity of the charging gun structure, avoid the loosening and corrosion problems caused by the traditional screw fixing structure, reduce poor contact and safety hazards, and reduce the use of tools and time consumption during production and maintenance, thereby reducing costs.
[0012] Preferably, the first engaging assembly further includes an abutment rod located at the bottom of the gun head and at the end away from the gun housing, the abutment rod being able to abut against the end wall of the gun housing.
[0013] By adopting the above technical solution, the first elastic guide block and the first elastic hook block of the first engaging component are respectively embedded and locked in the slot and hook slot of the gun shell to achieve connection. The abutment rod is located at the bottom of the gun head away from the gun shell and can abut against the end wall of the gun shell, further stabilizing the connection structure between the gun head and the gun shell.
[0014] Preferably, a spare mounting hole is provided at one end of the gun head located inside the gun housing; the spare mounting hole is available for screwing in bolts.
[0015] By adopting the above technical solution, the first elastic guide block and the first elastic hook block of the first engaging component are respectively embedded and locked in the slot and hook slot of the gun shell to realize the connection between the gun head and the gun shell; the gun head has a reserved spare mounting hole for bolt tightening, which can be used as a backup connection method when the engaging component has a problem, further improving the reliability of the connection.
[0016] Preferably, the second engaging assembly includes an engaging ring, an elastic abutment block, and an elastic insertion block. The engaging ring is integrally formed on the end of the tail cap near the gun housing. The engaging ring has several elastic holes. The elastic abutment block and the elastic insertion block are respectively disposed in the elastic holes. The end of the elastic abutment block and the elastic insertion block away from the gun housing is connected to the inner wall of the corresponding elastic hole, and the other end has a gap with the inner wall of the corresponding elastic hole. Both the elastic abutment block and the elastic insertion block protrude from the elastic holes. The elastic abutment block can abut against the inner wall of the gun housing. The inner wall of the gun housing has a slot for the elastic insertion block to be inserted.
[0017] By adopting the above technical solution, the second locking assembly adopts a structure of locking ring, elastic clamping block and elastic insert block. The elastic clamping block is pressed against the inner wall of the gun shell and the elastic insert block is inserted into the slot of the inner wall of the gun shell, avoiding the use of traditional screw fixing structure and further reducing the complexity of the charging gun structure.
[0018] Preferably, a guide strip assembly is provided inside the gun casing, the slot is located inside the guide strip assembly, and the engaging ring is protruding from the elastic insert, the elastic insert being able to be inserted into the slot via the guide strip assembly.
[0019] By adopting the above technical solution, the guide strip assembly can guide the elastic insert block to be accurately inserted into the slot, making the connection between the tail cap and the gun casing more accurate and reliable.
[0020] Preferably, the second engaging component further includes a positioning strip, which is integrally formed on the outer wall of the engaging ring, and the inner wall of the gun housing is provided with a positioning groove for the positioning strip to be inserted.
[0021] By adopting the above technical solution, the positioning strip is integrally formed on the outer wall of the locking ring, and a positioning groove is opened on the inner wall of the gun shell for the positioning strip to be inserted. This can play a positioning role in the installation of the tail cover and the gun shell. In conjunction with the first locking component and the second locking component, the gun head, tail cover and gun shell are connected by locking, which reduces the complexity of the charging gun structure.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. The gun head and gun shell, and the tail cap and gun shell are connected by an integrally molded snap-fit assembly, which avoids the traditional screw fixing structure, reduces the complexity of the charging gun structure, reduces poor contact and safety hazards caused by loose screws and corrosion, and at the same time reduces production and maintenance costs and complexity.
[0024] 2. The gun head and the gun shell are connected by a first elastic guide block and a first elastic hook block, which avoids the traditional screw fixing structure, reduces the complexity of the charging gun structure, reduces poor contact and safety hazards caused by loose screws and corrosion, reduces the tools and time required in the production and maintenance process, and reduces costs.
[0025] 3. The second locking assembly adopts a structure of locking ring, elastic clamping block and elastic insert block. The elastic clamping block abuts against the inner wall of the gun shell and the elastic insert block is inserted into the slot of the inner wall of the gun shell, avoiding the use of traditional screw fixing structure and further reducing the complexity of the charging gun structure. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of an American standard AC charging gun according to the implementation scheme of this application.
[0027] Figure 2This is an exploded view used in the implementation scheme of this application to illustrate the positional relationship between the first engaging component and the gun head.
[0028] Figure 3 This is an exploded view of the embodiment of this application used to illustrate the positional relationship between the second locking component and the tail cap.
[0029] Explanation of reference numerals in the attached drawings: 1. Gun casing; 11. Slot; 12. Hook groove; 13. Slot; 14. Guide strip assembly; 15. Positioning groove; 2. Gun head; 21. Elastic groove; 3. Tail cap; 4. First engaging assembly; 41. First elastic guide block; 42. First elastic hook block; 43. Abutment rod; 44. Spare mounting hole; 5. Second engaging assembly; 51. Engaging ring; 511. Elastic hole; 52. Elastic abutment block; 53. Elastic insert block; 54. Positioning strip. Detailed Implementation
[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0031] This application discloses an American standard AC charging gun. (Refer to...) Figure 1 and Figure 2 A US standard AC charging gun includes a gun housing 1, a gun head 2, and a tail cap 3. The gun housing 1 has openings at both ends. One end of the opening is connected to the gun head 2, and the other end is connected to the tail cap 3. The gun head 2 and the gun housing 1 are connected by a first engaging component 4, and the tail cap 3 and the gun housing 1 are connected by a second engaging component 5. The first engaging component 4 is integrally formed on the gun head 2, and the second engaging component 5 is integrally formed on the tail cap 3. This connection method makes the assembly of the charging gun simpler, reduces the complexity and potential problems caused by the traditional screw fixing structure, and improves the reliability and stability of the charging gun.
[0032] Reference Figure 2 and Figure 3 The first engaging component 4 includes a first elastic guide block 41, a first elastic hook block 42, and an abutment rod 43. The gun head 2 has several elastic grooves 21. The first elastic guide block 41 is disposed in some of the elastic grooves 21, and the first elastic hook block 42 is disposed in the other portion of the elastic grooves 21. One end of each of the first elastic guide block 41 and the first elastic hook block 42 is connected to the inner wall of the corresponding elastic groove 21, and the other end has a gap with the inner wall of the corresponding elastic groove 21. Both the first elastic guide block 41 and the first elastic hook block 42 protrude from the elastic groove 21. The first elastic hook block 42 can be designed in the shape of a hook with a certain curvature to better achieve the engaging function. The inner wall of the gun casing 1 near the gun head 2 has a slot 11 for the first elastic guide block 41 to be embedded in, and a hook groove 12 for the first elastic hook block 42 to be engaged. The inner wall of the hook groove 12 forms a hook surface for the first elastic hook block 42 to be hooked.
[0033] When the gun head 2 is connected to the gun casing 1, the first elastic guide block 41 is embedded in the slot 11, which plays a guiding and initial positioning role, and at the same time increases the stability of the connection; the first elastic hook block 42 is inserted into the hook slot 12 and hooks the hook surface to achieve a firm locking connection.
[0034] The abutment rod 43 is integrally formed on the gun head 2. The abutment rod 43 is located at the bottom of the gun head 2 and at the end away from the gun housing 1. The abutment rod 43 can abut against the end wall of the gun housing 1, further enhancing the stability of the connection between the gun head 2 and the gun housing 1 and preventing the gun head 2 from shaking during use. The first elastic guide block 41, the first elastic hook block 42 and the abutment rod 43 cooperate with each other to complete the connection between the gun head 2 and the gun housing 1. This combination makes the connection more stable and reliable, avoiding problems such as loosening and corrosion that may occur with traditional screw connections.
[0035] In addition, a spare mounting hole 44 is provided at one end of the gun head 2 located inside the gun housing 1, which allows for the screwing of bolts. In some special cases, if the locking assembly malfunctions, or if a more secure connection is required, bolts can be used for auxiliary fixing through the spare mounting hole 44, increasing the flexibility and reliability of the charging gun connection method.
[0036] The second engaging assembly 5 includes an engaging ring 51, an elastic abutment block 52, an elastic insert block 53, and a positioning strip 54. The engaging ring 51 is integrally formed on the end of the tail cap 3 near the gun housing 1. The engaging ring 51 has several elastic holes 511. The elastic abutment block 52 and the elastic insert block 53 are respectively disposed in the elastic holes 511. The end of the elastic abutment block 52 and the elastic insert block 53 away from the gun housing 1 is connected to the inner wall of the corresponding elastic hole 511, and the other end has a gap with the inner wall of the corresponding elastic hole 511. Both the elastic abutment block 52 and the elastic insert block 53 protrude from the elastic hole 511.
[0037] The function of the elastic clamping block 52 is to press against the inner wall of the gun housing 1, increasing the tightness and stability of the connection between the tail cap 3 and the gun housing 1; additionally, the elastic clamping block 52 is provided with a hook-shaped structure for pressing against the cable on one side of the inner ring of the engagement ring 51. The elastic insert block 53 can be a wedge-shaped block structure, and the inner wall of the gun housing 1 is provided with a slot 13 for inserting the elastic insert block 53.
[0038] The gun casing 1 has an integrally formed guide strip assembly 14, and the slot 13 is located inside the guide strip assembly 14. The locking ring 51 is located at the elastic plug 53 and protrudes. The elastic plug 53 can be inserted into the slot 13 through the guide strip assembly 14. The guide strip assembly 14 plays the role of guiding the elastic plug 53 to be accurately inserted into the slot 13.
[0039] The positioning strip 54 is integrally formed on the outer wall of the engaging ring 51. A positioning groove 15 is provided on the inner wall of the gun housing 1 for the positioning strip 54 to be inserted. The positioning strip 54 can be a long, strip-shaped protrusion, made of the same material as the engaging ring 51. The positioning strip 54 is inserted into the positioning groove 15, achieving accurate alignment between the tail cap 3 and the gun housing 1, further ensuring the stability of the connection. The engaging ring 51, the elastic clamping block 52, the elastic insert block 53, and the positioning strip 54 work together to complete the connection between the tail cap 3 and the gun housing 1. This connection method is simple and convenient, and effectively avoids the drawbacks of traditional screw connections.
[0040] The implementation principle of a US standard AC charging gun according to an embodiment of this application is as follows: A first locking assembly 4 and a second locking assembly 5 are used to connect the gun head 2 to the gun housing 1 and the tail cover 3 to the gun housing 1, respectively, eliminating the traditional screw fixing structure. The one-piece molding design of the locking assembly reduces the number of parts and assembly steps, lowering the cost and complexity of production and maintenance. The first elastic guide block 41, the first elastic hook block 42, and the abutment rod 43 in the first locking assembly 4 cooperate to achieve a stable connection between the gun head 2 and the gun housing 1; the locking ring 51, the elastic abutment block 52, the elastic insert block 53, and the positioning strip 54 in the second locking assembly 5 work together to complete a reliable connection between the tail cover 3 and the gun housing 1. The provision of a spare mounting hole 44 increases the flexibility of the connection method. This design avoids problems such as loose screws and corrosion, improves the reliability and stability of the charging gun, and also enhances the efficiency of production and maintenance, representing a significant improvement over existing US standard AC charging gun technology.
[0041] 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 US standard AC charging gun, characterized in that: The gun includes a gun shell (1) with openings at both ends. One end of the gun shell (1) is connected to a gun head (2), and the other end is connected to a tail cap (3). A first engaging component (4) is provided between the gun head (2) and the gun shell (1), and a second engaging component (5) is provided between the tail cap (3) and the gun shell (1). The first engaging component (4) is integrally formed on the gun head (2), and the second engaging component (5) is integrally formed on the tail cap (3).
2. The American standard AC charging gun according to claim 1, characterized in that: The first engaging assembly (4) includes a first elastic guide block (41) and a first elastic hook block (42). The gun head (2) is provided with a plurality of elastic grooves (21). The first elastic guide block (41) and the first elastic hook block (42) are provided in a plurality of ways. The first elastic guide block (41) is provided in some of the elastic grooves (21), and the first elastic hook block (42) is provided in another part of the elastic grooves (21). One end of the first elastic guide block (41) and the first elastic hook block (42) are connected to the inner wall of the corresponding elastic groove (21), and the other end of the first elastic guide block (41) and the corresponding elastic hook block (42) have a gap. The first elastic guide block (41) and the first elastic hook block (42) protrude from the elastic groove (21). The inner wall of the gun shell (1) near the gun head (2) is provided with a slot (11) for the first elastic guide block (41) to be embedded and a hook slot (12) for the first elastic hook block (42) to be engaged.
3. The American standard AC charging gun according to claim 2, characterized in that: The inner wall of the hook groove (12) forms a hook surface for the first elastic hook block (42) to hook.
4. The American standard AC charging gun according to claim 2, characterized in that: The first engaging assembly (4) further includes an abutment rod (43), which is located at the bottom of the gun head (2) and at one end away from the gun casing (1), and the abutment rod (43) can abut against the end wall of the gun casing (1).
5. A US standard AC charging gun according to claim 2, characterized in that: The gun head (2) has a spare mounting hole (44) at one end inside the gun housing (1); the spare mounting hole (44) is for screwing in bolts.
6. The American standard AC charging gun according to claim 1, characterized in that: The second engaging assembly (5) includes an engaging ring (51), an elastic abutment block (52), and an elastic insert block (53). The engaging ring (51) is integrally formed on the end of the tail cap (3) near the gun shell (1). The engaging ring (51) has several elastic holes (511). The elastic abutment block (52) and the elastic insert block (53) are respectively disposed in the elastic holes (511). The end of the elastic abutment block (52) and the elastic insert block (53) away from the gun shell (1) is connected to the inner wall of the corresponding elastic hole (511), and the other end has a gap with the inner wall of the corresponding elastic hole (511). The elastic abutment block (52) and the elastic insert block (53) both protrude from the elastic hole (511). The elastic abutment block (52) can abut against the inner wall of the gun shell (1). The inner wall of the gun shell (1) has a slot (13) for the elastic insert block (53) to be inserted.
7. A US standard AC charging gun according to claim 6, characterized in that: The gun casing (1) is provided with a guide strip assembly (14), the slot (13) is located in the guide strip assembly (14), the locking ring (51) is located at the elastic plug (53) and the elastic plug (53) can be inserted into the slot (13) via the guide strip assembly (14).
8. A US standard AC charging gun according to claim 6, characterized in that: The second engaging assembly (5) also includes a positioning strip (54), which is integrally formed on the outer wall of the engaging ring (51), and the inner wall of the gun shell (1) is provided with a positioning groove (15) for the positioning strip (54) to be inserted.