Leakage-proof electric vehicle charger

Abstract

A leakage-proof electric vehicle charger, comprising a bottom installation cover (1) and a plug end (2). A connecting seat (3) is provided inside the bottom installation cover; a press device (4) is provided on the connecting seat; a plug seat (5) is provided on the connecting seat; the plug end is in plugging matching with the plug seat; a limiting device (6) is provided inside the bottom installation cover; the press device presses the limiting device, and the limiting device limits the position of the plug end in the plug seat by means of a limiting assembly (7); when the plug end is plugged into an electric vehicle, the connecting seat arranged in the bottom installation cover generates heat, and the generated heat can drive the press device to release the limitation on the plug seat; at this time, the plug end plugged into the plug seat can pop out from the plug seat; however, because the plug end is plugged into the electric vehicle for charging, the plug end is combined with the plug seat, to avoid separation; and if the plug end is not plugged into the electric vehicle for charging, the plug end cannot limit the plug seat, so that the plug seat is disconnected from the plug end, to avoid leakage.

Description

A leakage-proof electric vehicle charger Technical Field

[0001] The present invention belongs to the technical field of electric vehicle chargers, and in particular relates to an anti-leakage electric vehicle charger. Background Art

[0002] With the development of science and technology and the progress of society, electric vehicles have gradually entered our lives. Electric vehicles are vehicles powered by electricity and can effectively reduce the emission of harmful gases. However, as the internal battery energy is consumed, electric vehicles need to be replenished with electricity. The charging method of electric vehicles is to replace the battery and use a charger.

[0003] Current chargers are unable to disconnect autonomously when there is a leakage, resulting in energy waste and even safety risks.

[0004] Summary of the Invention

[0005] The present invention aims to provide an anti-leakage electric vehicle charger, so as to automatically disconnect the connection between the charging terminal and the connecting socket when leakage occurs at the charging terminal.

[0006] To achieve the above objectives, the specific technical solution of the leakage-proof electric vehicle charger of the present invention is as follows:

[0007] A leakage-proof electric vehicle charger includes a bottom mounting cover and a plug-in terminal, characterized in that a connecting seat is provided inside the bottom mounting cover, a squeezing device is provided on the connecting seat, a plug-in terminal and the plug-in terminal are plugged together, a limiting device is provided inside the bottom mounting cover, the squeezing device squeezes the limiting device, and the limiting device limits the position of the plug-in terminal inside the plug-in terminal through a limiting component.

[0008] Furthermore, the plug end includes a mounting plate, a plug connector, a limiting assembly, a connector, a first mounting hole, a mounting column and a first spring. The mounting plate is provided with a plug connector, a connector and a mounting column. The plug connector is provided with a limiting assembly for fixing the plug socket. The plug connector is connected to the plug socket through the connector. The mounting column slides inside the first mounting hole. A first spring is provided between the mounting column and the first mounting hole.

[0009] Furthermore, the limiting assembly includes a movable sleeve, a limiting bar and a second spring. The movable sleeve slides on the plug connector, the limiting bar that squeezes the socket is set on the movable sleeve, and a second spring is provided between the movable sleeve and the mounting plate.

[0010] Furthermore, the connecting seat includes a fixed cylinder, a sliding cavity, an expansion cavity, a third spring, a movable ring and a cable. The fixed cylinder is arranged inside the bottom mounting cover, and a sliding cavity and an expansion cavity are provided inside the fixed cylinder. The movable ring slides in the sliding cavity and the expansion cavity. The expansion cavity is provided with a medium with a large thermal expansion coefficient. The third spring is arranged between the movable ring and the sliding cavity. The cable passes through the fixed cylinder and the socket to connect, and the movable ring drives the extrusion device to move.

[0011] Furthermore, the extrusion device includes an extrusion ring, the upper end of the extrusion ring extrudes the inclined surface of the limit assembly, and the extrusion ring is arranged on the movable ring through a connecting column.

[0012] Furthermore, the plug socket includes a fixed seat, a first half hole, a movable seat, a second half hole and a limiting half ring. The fixed seat is arranged on the cable, the first half hole is arranged on the fixed seat, the movable seat is arranged on the limiting assembly, the second half hole is arranged on the movable seat, and a limiting half ring is provided inside the second half hole to limit the movement of the connector. The first half hole and the second half hole form a hole for inserting the connector, and a first mounting hole is provided on the fixed seat.

[0013] Furthermore, the front end of the connector is provided with a chamfer, and the middle section of the connector is provided with an annular groove that cooperates with the limiting half ring.

[0014] Furthermore, the limiting device includes a fixed sleeve, a movable bolt and a return spring. The fixed sleeve is arranged inside the bottom mounting cover, the movable bolt slides inside the fixed sleeve, the return spring is arranged between the fixed sleeve and the movable bolt, and the limiting assembly is arranged on the movable bolt.

[0015] Furthermore, the limiting assembly includes a first pushing plate and a position adjusting device, and the first pushing plate is connected to the moving seat through the position adjusting device.

[0016] The advantages of the present invention are:

[0017] When the present invention is connected to the electric vehicle through the plug-in end, the connecting seat provided inside the bottom mounting cover will generate heat, and the generated heat will drive the extrusion device to release the restriction on the plug-in seat. At this time, the plug-in end inserted into the plug-in seat will pop out from the inside of the plug-in seat. However, due to the reason that the plug-in end and the electric vehicle are plugged in and charged, the plug-in end will combine the separation of the plug-in end and the plug-in seat. If the plug-in end is not plugged into the electric vehicle for charging, the plug-in end cannot restrict the plug-in seat, and then the plug-in seat and the plug-in end are disconnected to avoid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic diagram of the overall structure of the present invention;

[0019] FIG2 is a cross-sectional view of the overall structure of the present invention;

[0020] FIG3 is a schematic diagram of a partial structure of the present invention;

[0021] FIG4 is a schematic structural diagram of an extrusion device according to the present invention;

[0022] FIG5 is a schematic structural diagram of a connecting base according to the present invention;

[0023] FIG6 is a schematic diagram of the structure of the socket of the present invention;

[0024] FIG7 is a cross-sectional view of the socket of the present invention;

[0025] FIG8 is a schematic diagram of a partial structure of a socket according to the present invention;

[0026] FIG9 is a schematic diagram of the plug-in terminal structure of the present invention;

[0027] FIG10 is a cross-sectional view of the plug end of the present invention;

[0028] FIG11 is a schematic diagram of a partial structure of the plug end of the present invention;

[0029] Description of the marks in the figure:

[0030] Bottom mounting cover 1; plug end 2; mounting plate 2-1; plug connector 2-2; limiting assembly 2-3; movable sleeve 2-3-1; limiting strip 2-3-2; second spring 2-3-3; connector 2-4; first mounting hole 2-5; mounting column 2-6; first spring 2-7; connecting seat 3; fixing cylinder 3-1; sliding cavity 3-2; expansion cavity 3-3; third spring 3-4; movable ring 3-5; cable 3-6; extrusion device 4; extrusion ring 4-1; inclined surface 4-2; plug socket 5; fixing seat 5-1; first half hole 5-2; movable seat 5-3; second half hole 5-4; limiting half ring 5-5; limiting device 6; fixing sleeve 6-1; movable bolt 6-2; return spring 6-3; limiting assembly 7; first push plate 7-1; position adjustment device 7-2. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] As shown in Figure 1-11, a leakage-proof electric vehicle charger includes a bottom mounting cover 1 and a plug-in terminal 2, characterized in that a connecting seat 3 is provided inside the bottom mounting cover 1, a squeezing device 4 is provided on the connecting seat 3, a plug-in seat 5 is provided on the connecting seat 3, the plug-in terminal 2 and the plug-in seat 5 are plugged together, a limiting device 6 is provided inside the bottom mounting cover 1, the squeezing device 4 squeezes the limiting device 6, and the limiting device 6 limits the position of the plug-in terminal 2 inside the plug-in seat 5 through a limiting component 7.

[0034] When the plug-in terminal 2 is plugged into the electric vehicle, the connecting seat 3 provided inside the bottom mounting cover 1 will generate heat, and the generated heat will drive the extrusion device 4 to release the restriction on the plug-in seat 5. At this time, the plug-in terminal 2 inserted into the plug-in seat 5 will pop out from the inside of the plug-in seat 5. However, due to the reason that the plug-in terminal 2 and the electric vehicle are plugged in and charged, the plug-in terminal 2 will combine the separation of the plug-in terminal 2 and the plug-in seat 5. If the plug-in terminal 2 is not plugged into the electric vehicle for charging, the plug-in terminal 2 cannot restrict the plug-in seat 5, and then the plug-in seat 5 and the plug-in terminal 2 are disconnected to avoid leakage.

[0035] As shown in Figure 1-11, the plug end 2 includes a mounting plate 2-1, a plug connector 2-2, a limiting component 2-3, a connector 2-4, a first mounting hole 2-5, a mounting column 2-6 and a first spring 2-7. The mounting plate 2-1 is provided with a plug connector 2-2, a connector 2-4 and a mounting column 2-6. The plug connector 2-2 is provided with a limiting component 2-3 for fixing the plug socket 5. The plug connector 2-2 is connected to the plug socket 5 through the connector 2-4. The mounting column 2-6 slides inside the first mounting hole 2-5. A first spring 2-7 is provided between the mounting column 2-6 and the first mounting hole 2-5.

[0036] When the plug end 2 and the electric charging vehicle are charging, the limiting component 2-3 will be pushed to slide downward on the plug connector 2-2. The plug connector 2-2 sliding downward will limit the socket 5 to prevent the connector 2-4 from being separated from the socket 5.

[0037] As shown in Figure 1-11, the limiting assembly 2-3 includes a movable sleeve 2-3-1, a limiting bar 2-3-2 and a second spring 2-3-3. The movable sleeve 2-3-1 slides on the plug connector 2-2, and the limiting bar 2-3-2 that squeezes the socket 5 is set on the movable sleeve 2-3-1. A second spring 2-3-3 is provided between the movable sleeve 2-3-1 and the mounting plate 2-1.

[0038] The limiting strip 2-3-2 squeezes and limits the socket 5.

[0039] As shown in Figure 1-11, the connecting seat 3 includes a fixed cylinder 3-1, a sliding cavity 3-2, an expansion cavity 3-3, a third spring 3-4, a movable ring 3-5 and a cable 3-6. The fixed cylinder 3-1 is arranged inside the bottom mounting cover 1, and a sliding cavity 3-2 and an expansion cavity 3-3 are provided inside the fixed cylinder 3-1. The movable ring 3-5 slides in the sliding cavity 3-2 and the expansion cavity 3-3. The expansion cavity 3-3 is provided with a medium with a large thermal expansion coefficient. The third spring 3-4 is arranged between the movable ring 3-5 and the sliding cavity 3-2. The cable 3-6 passes through the fixed cylinder 3-1 and is connected to the connector 5. The movable ring 3-5 drives the extrusion device 4 to move.

[0040] When current passes through the cable 3-6, the cable 3-6 will generate heat, and the generated heat energy will cause the expansion chamber 3-3 to expand and then push the moving ring 3-5 to move, and the moving ring 3-5 drives the extrusion device 4 to move.

[0041] As shown in FIG1-11 , the extrusion device 4 includes an extrusion ring 4-1, the upper end of the extrusion ring 4-1 extrudes the inclined surface 4-2 of the limit assembly 7, and the extrusion ring 4-1 is arranged on the movable ring 3-5 through a connecting column.

[0042] The moving extrusion ring 4 - 1 is released from the extrusion of the limiting assembly 7 .

[0043] As shown in Figure 1-11, the connector 5 includes a fixed seat 5-1, a first half hole 5-2, a movable seat 5-3, a second half hole 5-4 and a limiting half ring 5-5. The fixed seat 5-1 is arranged on the cable 3-6, the first half hole 5-2 is arranged on the fixed seat 5-1, the movable seat 5-3 is arranged on the limiting component 7, the second half hole 5-4 is arranged on the movable seat 5-3, and a limiting half ring 5-5 is provided inside the second half hole 5-4 to limit the movement of the connector 2-4. The first half hole 5-2 and the second half hole 5-4 surround the hole for inserting the connector 2-4, and the fixed seat 5-1 is provided with a first mounting hole 2-5.

[0044] The extrusion ring 4-1 uses the extrusion limiting component 7 to enclose the fixed seat 5-1 and the movable seat 5-3 into a whole so that the connector 2-4 is inserted into the first half hole 5-2 and the second half hole 5-4. The limiting half ring 5-5 cooperates with the connector 2-4 to limit the movement of the connector 2-4.

[0045] As shown in FIG1-11 , the front end of the connector 2 - 4 is provided with a chamfer, and the middle section of the connector 2 - 4 is provided with an annular groove that cooperates with the limiting half ring 5 - 5 .

[0046] As shown in Figure 1-11, the limiting device 6 includes a fixed sleeve 6-1, a movable bolt 6-2 and a reset spring 6-3. The fixed sleeve 6-1 is arranged inside the bottom mounting cover 1, the movable bolt 6-2 slides inside the fixed sleeve 6-1, the reset spring 6-3 is arranged between the fixed sleeve 6-1 and the movable bolt 6-2, and the limiting assembly 7 is arranged on the movable bolt 6-2.

[0047] The return spring 6-3 inside the fixed sleeve 6-1 causes the movable bolt 6-2 to pull the limiting assembly 7 outward.

[0048] As shown in FIG1-11 , the position limiting assembly 7 includes a first push plate 7 - 1 and a position adjusting device 7 - 2 , and the first push plate 7 - 1 is connected to the moving seat 5 - 3 through the position adjusting device 7 - 2 .

[0049] The squeezing ring 4-1 squeezes the first push plate 7-1 to move, and the first push plate 7-1 drives the moving seat 5-3 to move and cooperate with the fixed seat 5-1 through the adjusting device 7-2.

[0050] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A leakage-proof electric vehicle charger, comprising a bottom mounting cover (1) and a plug-in terminal (2), characterized in that: The bottom mounting cover (1) is provided with a connecting seat (3) inside, a squeezing device (4) is provided on the connecting seat (3), a plug-in seat (5) is provided on the connecting seat (3), the plug-in end (2) and the plug-in seat (5) are plugged together, a limiting device (6) is provided inside the bottom mounting cover (1), the squeezing device (4) squeezes the limiting device (6), and the limiting device (6) limits the position of the plug-in end (2) inside the plug-in seat (5) through a limiting component (7).

2. The anti-leakage electric vehicle charger according to claim 1, characterized in that: The plug end (2) comprises a mounting plate (2-1), a plug connector (2-2), a limiting component (2-3), a connector (2-4), a first mounting hole (2-5), a mounting column (2-6) and a first spring (2-7); the mounting plate (2-1) is provided with a plug connector (2-2), a connector (2-4) and a mounting column (2-6); the plug connector (2-2) is provided with a limiting component (2-3) for fixing a plug socket (5); the plug connector (2-2) is connected to the plug socket (5) via the connector (2-4); the mounting column (2-6) slides inside the first mounting hole (2-5); and a first spring (2-7) is provided between the mounting column (2-6) and the first mounting hole (2-5).

3. The anti-leakage electric vehicle charger according to claim 2, characterized in that: The limiting assembly (2-3) comprises a movable sleeve (2-3-1), a limiting strip (2-3-2) and a second spring (2-3-3); the movable sleeve (2-3-1) slides on the plug connector (2-2); the limiting strip (2-3-2) that squeezes the plug socket (5) is arranged on the movable sleeve (2-3-1); and the second spring (2-3-3) is arranged between the movable sleeve (2-3-1) and the mounting plate (2-1).

4. The anti-leakage electric vehicle charger according to claim 1, characterized in that: The connecting seat (3) comprises a fixed cylinder (3-1), a sliding chamber (3-2), an expansion chamber (3-3), a third spring (3-4), a movable ring (3-5) and a cable (3-6); the fixed cylinder (3-1) is arranged inside the bottom mounting cover (1); a sliding chamber (3-2) and an expansion chamber (3-3) are arranged inside the fixed cylinder (3-1); the movable ring (3-5) slides in the sliding chamber (3-2) and the expansion chamber (3-3); a medium with a large thermal expansion coefficient is arranged in the expansion chamber (3-3); the third spring (3-4) is arranged between the movable ring (3-5) and the sliding chamber (3-2); the cable (3-6) passes through the fixed cylinder (3-1) and is connected to the plug-in seat (5); and the movable ring (3-5) drives the extrusion device (4) to move.

5. The anti-leakage electric vehicle charger according to claim 4, characterized in that: The extrusion device (4) comprises an extrusion ring (4-1), the upper end of the extrusion ring (4-1) extrudes the inclined surface (4-2) of the limit assembly (7), and the extrusion ring (4-1) is arranged on the moving ring (3-5) through a connecting column.

6. The anti-leakage electric vehicle charger according to claim 5, characterized in that: The plug socket (5) comprises a fixed seat (5-1), a first half hole (5-2), a movable seat (5-3), a second half hole (5-4) and a limiting half ring (5-5); the fixed seat (5-1) is arranged on the cable (3-6); the first half hole (5-2) is arranged on the fixed seat (5-1); the movable seat (5-3) is arranged on the limiting assembly (7); the second half hole (5-4) is arranged on the movable seat (5-3); a limiting half ring (5-5) for limiting the movement of the connector (2-4) is arranged inside the second half hole (5-4); the first half hole (5-2) and the second half hole (5-4) form a hole for inserting the connector (2-4); and the fixed seat (5-1) is provided with a first mounting hole (2-5).

7. The anti-leakage electric vehicle charger according to claim 6, characterized in that: The front end of the connector (2-4) is provided with a chamfer, and the middle section of the connector (2-4) is provided with an annular groove that cooperates with the limiting half ring (5-5).

8. The anti-leakage electric vehicle charger according to claim 7, characterized in that: The limiting device (6) comprises a fixed sleeve (6-1), a movable bolt (6-2) and a return spring (6-3); the fixed sleeve (6-1) is arranged inside the bottom mounting cover (1); the movable bolt (6-2) slides inside the fixed sleeve (6-1); the return spring (6-3) is arranged between the fixed sleeve (6-1) and the movable bolt (6-2); and the limiting component (7) is arranged on the movable bolt (6-2).

9. The anti-leakage electric vehicle charger according to claim 8, characterized in that: The position limiting assembly (7) comprises a first pushing plate (7-1) and a position adjusting device (7-2); the first pushing plate (7-1) is connected to the moving seat (5-3) via the position adjusting device (7-2).

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