Sealing structure of charging gun tail

Abstract

This utility model relates to the field of new energy electric vehicles and discloses a tail-end sealing structure for a charging gun, including a charging gun housing, a cable, a sealing ring, a male locking buckle, a female locking buckle, a tail cover, and a cable protector. The charging gun housing forms an installation cavity inside, into which the cable extends from the tail end of the charging gun housing. The sealing ring is fitted onto the cable and makes sealing contact with the inner wall of the tail end of the charging gun housing. The male locking buckle is fitted onto the cable and abuts against the sealing ring. The female locking buckle is fitted onto the male locking buckle and is fixedly connected to the inner wall of the tail end of the charging gun housing. The tail cover is fixedly connected to the tail end of the charging gun housing and seals the sealing ring, male locking buckle, and female locking buckle within the installation cavity. The tail cover has a through hole for the cable to pass through. The cable protector is fitted onto the cable and makes sealing contact with the wall of the through hole. This tail-end sealing structure improves the protection level of the charging gun tail position, ensures stable cable clamping, reduces the failure rate, and makes use safer.

Description

Technical Field

[0001] This utility model relates to the field of new energy electric vehicles, and in particular to a sealing structure for the tail of a charging gun. Background Technology

[0002] With the rapid development of the electric vehicle industry, the construction of charging infrastructure and technical standards are becoming increasingly important. Electric vehicles are charged through charging stations, whose output ends are connected to the vehicle's charging port via a charging gun. In outdoor environments, charging guns may be affected by factors such as sunlight, wind, rain, gasoline contact, fire hazards, and extreme cold. A reliable waterproof and sealed structure is essential to ensure the safety, durability, and charging efficiency of the charging gun.

[0003] The main components of existing charging guns include the gun head housing, the handle housing, and the cable. The gun head housing and the handle housing are combined to form the entire gun body. The cable enters the gun body from the rear of the handle housing and connects to the charging terminal. The protruding position of the charging terminal on the gun head housing, the assembly position of the gun head housing and the handle housing, the cable entry point at the rear of the handle housing, and the installation position of the locking lever assembly on the handle housing all have certain sealing requirements. In particular, the area between the rear of the handle housing and the cable is prone to gaps when the gun body is handled or the cable is dragged, as the cable's movement can loosen the seal. This allows moisture and dust to easily enter the gun body, causing charging malfunctions. Therefore, optimized design is necessary. Utility Model Content

[0004] Based on the above, the purpose of this utility model is to provide a sealing structure for the tail of a charging gun to improve the overall waterproof and dustproof capabilities of the charging gun.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A charging gun tail sealing structure includes a charging gun housing, a cable, a sealing ring, a male locking buckle, a female locking buckle, a tail cover, and a cable protector. The charging gun housing forms an installation cavity inside, and the cable extends into the installation cavity from the tail end of the charging gun housing. The sealing ring is fitted onto the cable and makes sealing contact with the inner wall of the tail end of the charging gun housing. The male locking buckle is fitted onto the cable and abuts against the side of the sealing ring facing outwards from the installation cavity. The female locking buckle is fitted onto the male locking buckle and is fixedly connected to the inner wall of the tail end of the charging gun housing. The tail cover is fixedly connected to the tail end of the charging gun housing and seals the sealing ring, male locking buckle, and female locking buckle within the installation cavity. The tail cover has a through hole for the cable to pass through. The cable protector is fitted onto the cable and makes sealing contact with the wall of the through hole.

[0007] As an alternative, the male locking buckle includes a first split buckle and a second split buckle. The first split buckle is sleeved on the cable and extends along the axial direction of the cable to form a locking part. The locking part surrounds a portion of the circumferential surface of the cable. The second split buckle can be combined with the first split buckle, and in the combined state, the second split buckle and the locking part cooperate to hug the cable.

[0008] As an alternative, in the combined state, the second split buckle and the outer surface of the locking wire part form a conical surface, and the female buckle is sleeved on the conical surface and applies a locking force to the male buckle.

[0009] As an alternative, a fixing part is provided on the outer edge of the female lock, and a fixing screw is provided on the fixing part. The screw is screwed in in the same direction as the axial direction of the cable.

[0010] As an alternative, a groove is provided on one of the two sides of the locking wire portion and one of the two sides of the second split buckle, and a protrusion is provided on the other of the two sides of the locking wire portion and the second split buckle, with the groove and the protrusion engaging and locking together.

[0011] As an alternative, the inner wall of the locking part and the inner wall of the second split buckle are respectively provided with a number of pressure protrusions that contact the surface of the cable.

[0012] As an alternative, the outer edge of the male lock has several circumferentially distributed positioning protrusions, and the inner wall of the tail end of the charging gun housing has positioning grooves that correspond one-to-one with the positioning protrusions. The positioning protrusions are embedded in the corresponding positioning grooves to restrict the movement and rotation of the male lock.

[0013] As an alternative, a plug-in portion extends from the tail end of the charging gun housing, and the tail cover is snapped into the plug-in portion and fixed to the charging gun housing with screws.

[0014] As an alternative, the inner wall of the tail cover is provided with several ring-shaped buckle protrusions, and the insertion part is provided with buckle grooves that correspond one-to-one with the buckle protrusions.

[0015] As an alternative, the cable sheath extends with a pressure edge that is pressed into the perforation.

[0016] The beneficial effects of this utility model are:

[0017] This charging gun's tail sealing structure addresses the issue of moisture and dust intrusion caused by loosening between the charging gun's housing and the cable. It features a cooperating sealing ring, male locking buckle, female locking buckle, tail cover, and cable protection sleeve, improving the protection level of the charging gun's tail position, ensuring stable cable clamping, reducing the failure rate, and making it safer to use. Attached Figure Description

[0018] Figure 1This is an exploded view of the tail sealing structure of the charging gun provided in this embodiment of the utility model;

[0019] Figure 2 This is a cross-sectional view of the tail sealing structure of the charging gun provided in this embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the engagement of the male and female locking buckles in the tail sealing structure of the charging gun provided in this embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the tail end port of the charging gun housing in the tail sealing structure of the charging gun provided in this embodiment of the utility model.

[0022] Figure 5 This is a schematic diagram of the inner wall structure of the tail cap in the tail sealing structure of the charging gun provided in this embodiment of the utility model.

[0023] In the attached image:

[0024] 1. Charging gun housing; 11. Positioning groove; 12. Limiting protrusion; 13. Plug-in part; 14. Buckle groove;

[0025] 2. Cables;

[0026] 3. Sealing ring;

[0027] 4. Male locking buckle; 41. First split buckle; 42. Second split buckle; 43. Locking thread part; 44. Conical surface; 45. Groove; 46. Protrusion; 47. Pressure protrusion; 48. Positioning protrusion;

[0028] 5. Female locking buckle; 51. Fixing part; 52. Fixing screw;

[0029] 6. Tail cap; 61. Perforation; 62. Buckle protrusion;

[0030] 7. Cable sheath; 71. Edge pressing. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are 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. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0036] Please see Figures 1 to 5 As shown, this embodiment provides a sealing structure for the tail end of a charging gun, including a charging gun housing 1, a cable 2, a sealing ring 3, a male locking buckle 4, a female locking buckle 5, a tail cover 6, and a cable protector 7. The charging gun housing 1 forms an installation cavity inside, and the cable 2 extends into the installation cavity from the tail end of the charging gun housing 1. The sealing ring 3 is fitted onto the cable 2 and makes sealing contact with the inner wall of the tail end of the charging gun housing 1. The male locking buckle 4 is fitted onto the cable 2 and abuts against the side of the sealing ring 3 facing outwards from the installation cavity. The female locking buckle 5 is fitted onto the male locking buckle 4 and is fixedly connected to the inner wall of the tail end of the charging gun housing 1. The tail cover 6 is fixedly connected to the tail end of the charging gun housing 1 and seals the sealing ring 3, male locking buckle 4, and female locking buckle 5 within the installation cavity. The tail cover 6 has a through hole 61 for the cable 2 to pass through. The cable protector 7 is fitted onto the cable 2 and makes sealing contact with the wall of the through hole 61.

[0037] Therefore, to address the issue of moisture and dust intrusion caused by the easy loosening between the tail end of the charging gun housing 1 and the cable 2, a series of mutually cooperating sealing rings 3, male locking buckle 4, female locking buckle 5, tail cover 6, and cable protection sleeve 7 were designed. These features improved the protection level of the tail end of the charging gun, ensured stable clamping of the cable 2, reduced the failure rate, and made the use safer.

[0038] Optionally, the male locking buckle 4 includes a first split buckle 41 and a second split buckle 42. The first split buckle 41 is sleeved on the cable 2 and extends along the axial direction of the cable 2 to form a locking part 43. The locking part 43 surrounds part of the circumferential surface of the cable 2. The second split buckle 42 can be combined with the first split buckle 41, and in the combined state, the second split buckle 42 and the locking part 43 cooperate to hug the cable 2.

[0039] Thus, by combining the first split buckle 41 and the second split buckle 42, a clamping force is formed on the cable 2, and the male locking buckle 4 can move along the cable 2 when it is split, making it convenient to adjust the fixed position, so that the cable 2 connector inside the charging gun housing 1 is not wrinkled or squeezed, and has a certain amount of room to move.

[0040] Furthermore, in the combined state, the outer surfaces of the second split buckle 42 and the locking wire portion 43 form a conical surface 44, and the female buckle 5 is fitted onto the conical surface 44 and applies a locking force to the male buckle 4.

[0041] Therefore, the female locking buckle 5 is not only used to limit the male locking buckle 4, but also to maintain and strengthen the clamping force of the locking part 43 and the second split buckle 42 on the cable 2, ensuring that the cable 2 is not easy to loosen during use.

[0042] Specifically, a fixing part 51 is provided on the outer edge of the female locking buckle 5, and a fixing screw 52 is provided on the fixing part 51. The screwing direction of the fixing screw 52 is consistent with the axis of the cable 2.

[0043] Due to the axial fastening and threaded connection, the axial distance between the female latch 5 and the male latch 4 is adjustable, that is, the pressure applied by the female latch 5 to the locking part 43 and the second split latch 42 is adjustable, which makes it convenient to adjust the locking force on the cable 2.

[0044] Furthermore, a groove 45 is provided on one of the two sides of the locking wire portion 43 and one of the two sides of the second split buckle 42, and a protrusion 46 is provided on the other of the two sides of the locking wire portion 43 and the second split buckle 42. The groove 45 and the protrusion 46 engage and lock together.

[0045] In this embodiment, a protrusion 46 is formed on the locking part 43 and a groove 45 is formed on the second split buckle 42. Through the cooperation of the groove 45 and the protrusion 46, the first split buckle 41 and the second split buckle 42 are in a state of accurate splicing.

[0046] To ensure the proper clamping effect of the locking part 43 and the second split buckle 42 on the cable 2, optionally, see details below. Figure 3 The inner wall of the locking part 43 and the inner wall of the second split buckle 42 are respectively provided with a number of pressure protrusions 47 that are in contact with the surface of the cable 2. The height of the pressure protrusions 47 is set according to the shrinkage characteristics of the outer sheath material of the cable 2, so that when the cable 2 is tightened, the cable 2 is not crushed and its internal pipeline is not damaged.

[0047] Optionally, the outer edge of the male lock buckle 4 is provided with a plurality of circumferentially distributed positioning protrusions 48, and the inner wall of the tail end of the charging gun housing 1 is provided with positioning grooves 11 corresponding to the positioning protrusions 48 one by one. The positioning protrusions 48 are embedded in the corresponding positioning grooves 11 to restrict the movement and rotation of the male lock buckle 4.

[0048] Therefore, the limiting effect of the male locking buckle 4 in the charging gun housing 1 is improved, ensuring the stability of the position of the male locking buckle 4 and avoiding the problem of loosening or even falling off of parts during use, which would lead to sealing failure. In addition, the inner wall of the charging gun housing 1 is provided with a limiting protrusion 12 to limit the insertion depth of the sealing ring 3, thereby achieving axial limiting of the sealing ring 3.

[0049] Optionally, a plug-in portion 13 extends from the tail end of the charging gun housing 1, and the tail cover 6 is snapped into the plug-in portion 13 and fixed to the charging gun housing 1 with screws. Further details can be found in [link to documentation]. Figure 4 and Figure 5 The inner wall of the tail cover 6 is provided with several ring-shaped buckle protrusions 62, and the plug part 13 is provided with buckle grooves 14 corresponding to the buckle protrusions 62 one by one.

[0050] Thus, by engaging the buckle protrusion 62 with the buckle groove 14, the connection reliability between the tail cover 6 and the charging gun housing 1 is improved, the sealing ring 3, the male locking buckle 4 and the female locking buckle 5 are sealed in the mounting cavity, and the tail end port of the charging gun housing 1 is sealed.

[0051] Optionally, a pressing edge 71 extends from the cable sheath 7 into the perforation 61.

[0052] This allows the cable sleeve 7 and the tail cap 6 to snap together. After the tail cap 6 is fixed on the charging gun housing 1, the cable sleeve 7 is also locked in place. Furthermore, the pressing edge 71 can fill the gap between the through hole 61 and the cable 2, preventing moisture and dust from entering.

[0053] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A seal structure for the rear end of a charging gun, characterized in that, It includes a charging gun housing (1), a cable (2), a sealing ring (3), a male locking buckle (4), a female locking buckle (5), a tail cap (6), and a cable protector (7), wherein: An installation cavity is formed inside the charging gun housing (1), and the cable (2) extends into the installation cavity from the tail end of the charging gun housing (1); The sealing ring (3) is sleeved on the cable (2) and makes sealing contact with the inner wall of the tail end of the charging gun housing (1); The male locking buckle (4) is sleeved on the cable (2) and abuts against the side of the sealing ring (3) facing out of the mounting cavity; The female latch (5) is sleeved on the male latch (4) and is fixedly connected to the inner wall of the tail end of the charging gun housing (1); The tail cap (6) is fixedly connected to the tail end port of the charging gun housing (1), and the sealing ring (3), the male lock (4) and the female lock (5) are sealed in the mounting cavity. The tail cap (6) has a through hole (61) for the cable (2) to pass through. The cable sleeve (7) is fitted onto the cable (2) and makes sealed contact with the hole wall of the through hole (61).

2. The sealing structure at the tail of the charging gun according to claim 1, characterized in that, The male locking buckle (4) includes a first split buckle (41) and a second split buckle (42). The first split buckle (41) is sleeved on the cable (2) and extends a locking part (43) along the axial direction of the cable (2). The locking part (43) surrounds part of the circumferential surface of the cable (2). The second split buckle (42) can be combined with the first split buckle (41), and in the combined state, the second split buckle (42) and the locking part (43) cooperate to hug the cable (2).

3. The sealing structure at the tail of the charging gun according to claim 2, characterized in that, In the combined state, the second split buckle (42) and the outer surface of the locking wire part (43) form a conical surface (44), and the female buckle (5) is sleeved on the conical surface (44) and applies a locking force to the male buckle (4).

4. The sealing structure at the tail of the charging gun according to claim 3, characterized in that, A fixing part (51) is provided on the outer edge of the female lock (5), and a fixing screw (52) is provided on the fixing part (51). The screwing direction of the fixing screw (52) is consistent with the axial direction of the cable (2).

5. The sealing structure at the tail of the charging gun according to claim 2, characterized in that, A groove (45) is provided on one of the two sides of the locking part (43) and one of the two sides of the second split buckle (42), and a protrusion (46) is provided on the other side of the locking part (43) and the second split buckle (42). The groove (45) and the protrusion (46) engage with each other.

6. The sealing structure at the tail of the charging gun according to claim 2, characterized in that, The inner wall of the locking part (43) and the inner wall of the second split buckle (42) are respectively provided with a plurality of pressure protrusions (47) that are in contact with the surface of the cable (2).

7. The sealing structure at the tail of the charging gun according to claim 1, characterized in that, The outer edge of the male lock (4) is provided with a plurality of circumferentially distributed positioning protrusions (48), and the inner wall of the tail end of the charging gun housing (1) is provided with positioning grooves (11) corresponding to the positioning protrusions (48). The positioning protrusions (48) are embedded in the corresponding positioning grooves (11) to restrict the movement and rotation of the male lock (4).

8. The sealing structure at the tail of the charging gun according to claim 1, characterized in that, The tail end of the charging gun housing (1) extends into a plug-in portion (13), and the tail cover (6) is snapped into the plug-in portion (13) and fixed to the charging gun housing (1) by screws.

9. The sealing structure at the tail of the charging gun according to claim 8, characterized in that, The inner wall of the tail cap (6) is provided with a number of ring-shaped buckle protrusions (62), and the plug-in part (13) is provided with buckle grooves (14) that correspond one-to-one with the buckle protrusions (62).

10. The sealing structure at the tail of the charging gun according to claim 1, characterized in that, The protective sleeve (7) extends a pressing edge (71) that is pressed into the perforation (61).

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