A charging head for electric vehicle charging piles

Abstract

The application discloses a charging head for electric vehicle charging pile, which comprises a gun body, a plug connector arranged at the end of the gun body, and a closed unit comprising an inflatable sealing cover arranged between the plug connector and the gun body and an air charging assembly arranged on the gun body and communicating with the inside of the sealing cover. The charging head for electric vehicle charging pile inflates the inside of the sealing cover through the air charging assembly, so that the sealing cover is inflated to contact and seal the charging pile interface part, thereby effectively preventing rainwater and dust from entering.

Description

Technical Field

[0001] This invention relates to the technical field of electric vehicles, and more particularly to a charging head for electric vehicle charging stations. Background Technology

[0002] Electric vehicles, also known as new energy vehicles, are becoming increasingly popular. As new energy vehicles develop and become more widespread, charging stations are also becoming ubiquitous. The input end of a charging station is directly connected to the AC power grid, and the output end is equipped with a charging head for charging electric vehicles.

[0003] Existing charging heads are plugged into the charging station when not in use. When the charging station is outdoors, water and dust can easily get into the interface between the charging head and the charging station during rain and inclement weather, corroding the charging port and causing damage to the charging head. Therefore, this invention provides a charging head for electric vehicle charging stations. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problem that existing charging heads for charging piles are prone to water and dust ingress at the interface between the charging head and the charging pile, which can adhere to the charging head and corrode the charging port, this invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a charging head for electric vehicle charging stations.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a charging head for an electric vehicle charging pile, comprising: a gun body; a connector disposed at the end of the gun body; and a sealing unit comprising an expandable sealing cover disposed between the connector and the gun body, and an inflation component disposed on the gun body and communicating with the interior of the sealing cover.

[0008] As a preferred embodiment of the charging head for the electric vehicle charging pile of the present invention, the sealing cover is made of rubber; the sealing cover is provided with at least one fixing component, which is used to cooperate with the charging pile to prevent it from falling off.

[0009] As a preferred embodiment of the charging head for electric vehicle charging piles according to the present invention, the fixing component includes a mounting box disposed on the sealing cover and having an open top, a slide rod disposed on the plug and slidably connected to the bottom end of the mounting box, and a snap-fit ​​part disposed inside the mounting box.

[0010] As a preferred embodiment of the charging head for electric vehicle charging piles according to the present invention, the snap-fit ​​portion includes a limiting block slidably disposed in the mounting box, a first elastic member disposed between the bottom end of the limiting block and the mounting box, and a cavity disposed at the bottom end of the limiting block and accommodating the first elastic member and the sliding rod.

[0011] As a preferred embodiment of the charging head for electric vehicle charging piles according to the present invention, the inflation assembly includes two inflation parts disposed on both sides of the gun body and communicating with the sealing cover, and a limiting part disposed inside the inflation part.

[0012] As a preferred embodiment of the charging head for electric vehicle charging piles according to the present invention, the inflation part includes an inflation cylinder disposed on the side of the gun body, a connecting pipe disposed at the end of the inflation cylinder and inserted into the sealing cover, a piston disposed inside the inflation cylinder, and a push rod disposed on the piston.

[0013] As a preferred embodiment of the charging head for electric vehicle charging piles according to the present invention, the limiting part includes a receiving cavity disposed on the air cylinder and communicating with the interior of the air cylinder, and a limiting member disposed in the middle of the piston and cooperating with the receiving cavity.

[0014] As a preferred embodiment of the charging head for the electric vehicle charging pile of the present invention, the limiting member includes a mounting groove disposed in the middle of the piston, a locking block slidably disposed in the mounting groove, and a second elastic member disposed between the bottom end of the locking block and the piston; the locking block is trapezoidal and cooperates with the receiving cavity.

[0015] As a preferred embodiment of the charging head for electric vehicle charging piles according to the present invention, it further includes a driving unit, the driving unit including a mounting post disposed at the top of the gun body, a sliding post slidably disposed in the mounting post, an arc-shaped plate slidably disposed at the end of the sliding post, and driving components disposed at both ends of the arc-shaped plate and respectively cooperating with the end of the push rod.

[0016] As a preferred embodiment of the charging head for electric vehicle charging piles according to the present invention, the driving component includes gears respectively disposed at the ends of the two push rods, racks disposed at both ends of the arc-shaped plate and respectively meshing with the two gears, baffles disposed at both ends of the arc-shaped plate and located on both sides of the gears, slots disposed on the baffles and cooperating with the push rods, handles disposed between the two baffles, and a third elastic member disposed between the baffles and the sliding column.

[0017] The beneficial effects of this invention are: by inflating the inside of the sealing cover with air through the inflation component, the sealing cover expands and contacts the charging pile interface to seal, effectively preventing rainwater and dust from entering. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0019] Figure 1 This is a schematic diagram of the overall structure of the charging head for electric vehicle charging piles according to the present invention.

[0020] Figure 2 This is a schematic diagram of the internal structure of the sealing cover of the charging head for electric vehicle charging piles according to the present invention.

[0021] Figure 3 This is a schematic diagram of the limiting block structure of the charging head for the electric vehicle charging pile of the present invention.

[0022] Figure 4 This is a front view of the charging head for an electric vehicle charging station according to the present invention.

[0023] Figure 5 This is a schematic diagram of the limiting part structure of the charging head for electric vehicle charging piles according to the present invention.

[0024] Figure 6 This is a schematic diagram of the drive unit structure of the charging head for electric vehicle charging piles according to the present invention. Detailed Implementation

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0029] Example 1

[0030] Reference Figure 1 The first embodiment of the present invention provides a charging head for an electric vehicle charging station. This device includes a gun body 100; a connector 200 disposed at the end of the gun body 100; and a sealing unit 300, including an expandable sealing cover 301 disposed between the connector 200 and the gun body 100, and an inflation component 302 disposed on the gun body 100 and communicating with the interior of the sealing cover 301.

[0031] The sealing cover 301 is made of a sealing and elastic material, preferably rubber, and the inflation component 302 can be made of an air cylinder with a fixing device on it. After the sealing cover 301 is inflated, the air cylinder is fixed to prevent the sealing cover 301 from leaking air.

[0032] During use, the connector 200 is plugged into the interface of the charging pile, and then the sealing cover 301 is inflated by the inflation component 302, so that it expands and contacts the interface of the charging pile to seal it and prevent rainwater and dust from entering.

[0033] Example 2

[0034] Reference Figure 1-3 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: the sealing cover 301 is provided with at least one fixing component 303. The fixing component 303 is used to cooperate with the charging pile to prevent it from falling off. The fixing component 303 can be provided in 1 to 8 ways.

[0035] The fixing component 303 includes a mounting box 303a disposed on the sealing cover 301 and having an open top, a slide rod 303b disposed on the plug connector 200 and slidably connected to the bottom end of the mounting box 303a, and a snap-fit ​​part 303c disposed inside the mounting box 303a.

[0036] The snap-fit ​​part 303c includes a limiting block 303c-1 slidably disposed in the mounting box 303a, a first elastic member 303c-2 disposed between the bottom end of the limiting block 303c-1 and the mounting box 303a, and a cavity 303c-3 disposed at the bottom end of the limiting block 303c-1 and accommodating the first elastic member 303c-2 and the slide rod 303b. When the limiting block 303c-1 is squeezed, the first elastic member 303c-2 will be compressed and located in the cavity 303c-3. The slide rod 303b and the mounting box 303a are sealed by a sealing ring, which is embedded in the mounting box 303a.

[0037] When the sealing cover 301 is not filled with air, the mounting box 303a is close to the connector 200, and the distance from the top of the limiting block 303c-1 to the axis of the connector 200 is less than the radius of the charging pile interface, ensuring that the connector 200 can be smoothly inserted into the charging pile interface.

[0038] The first elastic element 303c-2 can be made of a spring and a metal sheet, preferably a spring, and one to three can be used. The interface of the charging pile is provided with an arc-shaped slot that cooperates with the limiting block 303c-1.

[0039] The remaining structure is the same as that in Example 1.

[0040] During use, the connector 200 is plugged into the charging pile interface. Then, the sealing cover 301 is inflated by the inflation component 302, causing it to expand and seal against the charging pile interface, preventing rainwater and dust from entering. At the same time, when the sealing cover 301 expands, it will drive the mounting box 303a to rise along the sliding column 302c-2, so that the limiting block 303c-1 is inserted into the arc-shaped slot in the charging pile interface that cooperates with the limiting block 303c-1, fixing the gun body 100 and preventing it from falling off. When the connector 200 contacts the car's charging port for charging, without the arc-shaped slot that cooperates with the limiting block 303c-1, the limiting block 303c-1 will compress the first elastic element 303c-2, without affecting the expansion of the sealing cover 301, ensuring that the sealing cover 301 can contact and seal against the car's charging port, preventing rainwater and dust from entering. At the same time, the expansion of the sealing cover 301 under force can prevent the gun body 100 and the connector 200 from sliding off the car's charging port.

[0041] Example 3

[0042] Reference Figure 1-6 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the inflation assembly 302 includes two inflation parts 302a disposed on both sides of the gun body 100 and communicating with the sealing cover 301, and a limiting part 302b disposed inside the inflation part 302a.

[0043] The inflation unit 302a includes an inflation cylinder 302a-1 disposed on the side of the gun body 100, a connecting pipe 302a-2 disposed at the end of the inflation cylinder 302a-1 and inserted into the sealing cover 301, a piston 302a-3 disposed inside the inflation cylinder 302a-1, and a push rod 302a-4 disposed on the piston 302a-3;

[0044] The limiting part 302b includes a receiving cavity 302b-1 disposed on the air cylinder 302a-1 and communicating with the interior of the air cylinder 302a-1, and a limiting member 302b-2 disposed in the middle of the piston 302a-3 and cooperating with the receiving cavity 302b-1; the limiting member 302b-2 includes a mounting groove 302b-21 disposed in the middle of the piston 302a-3, a locking block 302b-22 slidably disposed in the mounting groove 302b-21, and a second elastic member 302b-23 disposed between the bottom end of the locking block 302b-22 and the piston 302a-3; the locking block 302b-22 is trapezoidal and cooperates with the receiving cavity 302b-1, and the second elastic member 302b-23 can be made of a spring and a metal sheet, preferably a spring, and one or two springs can be used;

[0045] When air is injected into the sealing cover 301, the piston 302a-3 is moved by pushing the push rod 302a-4, and the gas inside the air cylinder 302a-1 is injected into the sealing cover 301, causing the sealing cover 301 to expand. When the piston 302a-3 moves to the receiving cavity 302b-1, the locking block 302b-22 is ejected by the second elastic element 302b-23 and inserted into the receiving cavity 302b-1 to fix the piston 302a-3 and keep the sealing cover 301 in an expanded state. When it is necessary to release the air from the sealing cover 301, simply rotate the push rod 302a-4 so that the trapezoidal locking block 302b-22 contacts the inner wall of the receiving cavity 302b-1 and is squeezed back into the piston 302a-3, thus removing the piston 302a-3 and causing the expanded sealing cover 301 to deflate.

[0046] It also includes a drive unit 302c, which includes a mounting post 302c-1 disposed at the top of the gun body 100, a sliding post 302c-2 slidably disposed in the mounting post 302c-1, an arc plate 302c-3 slidably disposed at the end of the sliding post 302c-2, and a drive member 302c-4 disposed at both ends of the arc plate 302c-3 and respectively cooperating with the end of the push rod 302a-4;

[0047] The driving component 302c-4 includes gears 302c-41 respectively disposed at the ends of two push rods 302a-4; racks 302c-42 disposed at both ends of the arc-shaped plate 302c-3 and meshing with the two gears 302c-41 respectively; baffles 302c-43 disposed at both ends of the arc-shaped plate 302c-3 and located on both sides of the gears 302c-41; and slots 302c-44 disposed on the baffles 302c-43 and cooperating with the push rods 302a-4. When the arc-shaped plate 302c-3 rotates, the push rods 302a-4 can... A handle 302c-45 is provided between two end baffles 302c-43 and slides in the slot 302c-44. The baffles 302c-43 hold the gear 302c-41 in place. When the handle 302c-45 is pushed, the two push rods 302a-4 and the piston 302a-3 can be pushed to move synchronously at the same time. A third elastic element 302c-46 is provided between the baffles 302c-43 and the slide column 302c-2. The third elastic element 302c-46 can be made of a spring and a metal sheet, preferably a spring.

[0048] When the third elastic element 302c-46 is in the relaxed state, the rack 302c-42 on the arc plate 302c-3 meshes with the gear 302c-41. Simultaneously, the path of the locking blocks 302b-22 on the two pistons 302a-3 coincides with that of the receiving cavity 302b-1. When the push handle 302c-45 moves the two gears 302c-41 and the push rod 302a-4 forward, it moves the piston 302a-3, injecting gas from the air cylinder 302a-1 into the sealing cover 301, causing the sealing cover 301 to expand. When the piston 302a-3 moves to the receiving cavity 302b-1, the locking blocks 302b-22 are ejected by the second elastic element 302b-23 and inserted into the receiving cavity. In cavity 302b-1, piston 302a-3 is fixed. When air needs to be released, simply turn handle 302c-45 to rotate arc plate 302c-3 and compress third elastic element 302c-46. This causes rack 302c-42 to drive gear 302c-41, push rod 302a-4 and piston 302a-3 to rotate, causing trapezoidal block 302b-22 to contact the inner wall of cavity 302b-1 and be squeezed back into piston 302a-3, thus removing piston 302a-3 and causing the expanded sealing cover 301 to deflate. When handle 302c-45 is released, third elastic element 302c-46 rebounds, allowing piston 302a-3 to reset, facilitating the next air injection.

[0049] The remaining structure is the same as that in Example 2.

[0050] During use, the connector 200 is plugged into the charging pile interface. Then, by moving the handle 302c-45, the two push rods 302a-4 and the piston 302a-3 are pushed synchronously to inflate the sealing cover 301, causing it to expand and seal against the charging pile interface, preventing rainwater and dust from entering. When deflating, simply turn the handle 302c-45. Turning the handle 302c-45 causes the arc plate 302c-3 to rotate and compress the third elastic element 302c-46. This causes the rack 302c-42 to drive the gear 302c-41, push rod 302a-4, and piston 302a-3 to rotate, causing the trapezoidal locking block 302b-22 to contact the inner wall of the receiving cavity 302b-1 and be squeezed back into the piston 302a-3, thus removing the piston 302a-3 and causing the expanded sealing cover 301 to deflate.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A charging head for an electric vehicle charging station, characterized in that: include, Gun body (100); A connector (200) is disposed at the end of the gun body (100); and, The sealing unit (300) includes an expandable sealing cover (301) disposed between the connector (200) and the gun body (100), and an inflation component (302) disposed on the gun body (100) and communicating with the interior of the sealing cover (301). The sealing cover (301) is made of rubber; The sealing cover (301) is provided with at least one fixing component (303), which is used to cooperate with the charging pile to prevent it from falling off; The fixing component (303) includes a mounting box (303a) disposed on the sealing cover (301) and open at the top, a slide rod (303b) disposed on the plug (200) and slidably connected to the bottom end of the mounting box (303a), and a snap-fit ​​part (303c) disposed inside the mounting box (303a). The snap-fit ​​portion (303c) includes a limiting block (303c-1) slidably disposed in the mounting box (303a), a first elastic member (303c-2) disposed between the bottom end of the limiting block (303c-1) and the mounting box (303a), and a cavity (303c-3) disposed at the bottom end of the limiting block (303c-1) and accommodating the first elastic member (303c-2) and the slide rod (303b). The inflation assembly (302) includes two inflation parts (302a) disposed on both sides of the gun body (100) and communicating with the sealing cover (301), and a limiting part (302b) disposed inside the inflation part (302a). The inflation unit (302a) includes an inflation cylinder (302a-1) disposed on the side of the gun body (100), a connecting pipe (302a-2) disposed at the end of the inflation cylinder (302a-1) and inserted into the sealing cover (301), a piston (302a-3) disposed inside the inflation cylinder (302a-1), and a push rod (302a-4) disposed on the piston (302a-3). The limiting part (302b) includes a receiving cavity (302b-1) disposed on the air cylinder (302a-1) and communicating with the interior of the air cylinder (302a-1), and a limiting member (302b-2) disposed in the middle of the piston (302a-3) and cooperating with the receiving cavity (302b-1). The limiting member (302b-2) includes a mounting groove (302b-21) disposed in the middle of the piston (302a-3), a locking block (302b-22) slidably disposed in the mounting groove (302b-21), and a second elastic member (302b-23) disposed between the bottom end of the locking block (302b-22) and the piston (302a-3). The card block (302b-22) is trapezoidal and fits into the receiving cavity (302b-1).

2. The charging head for electric vehicle charging piles according to claim 1, characterized in that: It also includes a drive unit (302c), which includes a mounting post (302c-1) disposed at the top of the gun body (100), a sliding post (302c-2) slidably disposed in the mounting post (302c-1), an arc-shaped plate (302c-3) slidably disposed at the end of the sliding post (302c-2), and a drive member (302c-4) disposed at both ends of the arc-shaped plate (302c-3) and respectively cooperating with the end of the push rod (302a-4).

3. The charging head for electric vehicle charging piles according to claim 2, characterized in that: The driving component (302c-4) includes gears (302c-41) respectively disposed at the ends of the two push rods (302a-4), racks (302c-42) disposed at both ends of the arc plate (302c-3) and meshing with the two gears (302c-41), baffles (302c-43) disposed at both ends of the arc plate (302c-3) and located on both sides of the gears (302c-41), slots (302c-44) disposed on the baffles (302c-43) and cooperating with the push rods (302a-4), handles (302c-45) disposed between the two baffles (302c-43), and a third elastic element (302c-46) disposed between the baffles (302c-43) and the sliding column (302c-2).

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