Control box cable sealing waterproof structure

Abstract

The utility model relates to the charging gun waterproof technical field, and especially relates to a control box cable sealing waterproof structure comprising a control box, a cable, a waterproof cable sealing gasket, and a sealing gasket gland used for extruding the cable sealing gasket and supporting the cable; the sealing gasket gland comprises a bottom cover and a through circular truncated cone which are integrally formed. During assembly, the cable sequentially penetrates through the circular truncated cone, the bottom cover and the cable sealing gasket and then is inserted into the control box. And the cable sealing gasket is extruded by the bottom cover and is fixed on the control box. The cable, the cable sealing gasket and the sealing gasket gland are matched with each other to form a tight extrusion sealing waterproof area, and external water cannot enter the control box through sealing isolation of the extrusion sealing waterproof area. And the circular truncated cone provides supporting force for the inserted cable, so that the probability of deformation of the cable sealing gasket is reduced, the waterproof performance of the control box is greatly improved, and the safety and effectiveness of the charging process are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of charging gun waterproofing, and in particular to a control box cable sealing and waterproofing structure. Background Art

[0002] With the rapid growth of the new energy vehicle market, the number of charging piles in cities has increased significantly. Correspondingly, the frequency of use of AC charging guns for new energy vehicles has also gradually increased. Usually, the control box of the AC charging gun of a new energy vehicle is equipped with a control board circuit, and the cables and control board circuits need to be connected and assembled in the control box. The charging pile starts charging through the control board circuit and transmits electrical energy to the external new energy vehicle through the cable. The control box controls and protects the entire charging process to ensure the safety and effectiveness of the charging process.

[0003] However, the use environment of the charging pile is relatively harsh, and it often needs to face wind and rain. At this time, the waterproof performance of the control box is particularly important. At present, the AC charging gun generally uses a waterproof sealing rubber ring at the interface between the cable and the control box to improve the waterproof performance of the control box. This waterproof sealing rubber ring fits the cable at the interface position, and can form a ring-shaped waterproof barrier at the interface between the cable and the control box to prevent moisture from entering the inside of the control box. However, in the actual operation process of charging new energy vehicles, the cable of the AC charging gun not only has to withstand high-frequency stretching, but also needs to resist large-angle bending, and sometimes even bends about 180° at the interface. When the cable at the interface is bent to about 180°, the waterproof sealing rubber ring that fits it is very likely to deform due to the change in the shape of the cable, destroying the waterproof barrier that has been formed, causing the waterproof performance of the control box to weaken or fail, allowing more or less moisture to enter the control box. Once the control box is flooded, the control board circuit in the control box will inevitably fail or even burn out. Not only will the entire charging pile no longer be able to start charging normally, but there will also be a major safety hazard. Utility Model Content

[0004] In view of this, the utility model proposes a control box cable sealing and waterproof structure, aiming to solve the current problem that the waterproof ability of the control box is weak due to the easy deformation of the waterproof sealing rubber ring of the control box.

[0005] The utility model proposes a control box cable sealing and waterproof structure, which is applied to an AC charging gun of a new energy vehicle, comprising a control box and a cable, and also comprising a cable sealing pad for waterproofing and a sealing pad pressure cover for squeezing the cable sealing pad and supporting the cable; wherein both ends of the control box are provided with a hole position for the cable to pass through and an installation position for installing the cable sealing pad, the cable sealing pad is provided with a first through hole for the cable to pass through, the sealing pad pressure cover comprises an integrally formed bottom cover and a through frustum, the bottom cover is provided with a second through hole for the cable to pass through, the bottom cover extends the frustum outward along the outer circumference of the second through hole, the radius of one bottom surface of the frustum is equal to the radius of the second through hole, and the radius of the other bottom surface of the frustum is smaller than the radius of the second through hole;

[0006] The cable passes through the other bottom surface of the truncated cone, one bottom surface of the truncated cone, the bottom cover and the cable sealing gasket in sequence and is then inserted into the interior of the control box through the hole. The cable sealing gasket is squeezed by the bottom cover and fixed at the installation position. The squeezed cable sealing gasket and the cable are interference fit at the first through hole position.

[0007] Furthermore, the hole is located at the center of the installation position, and the installation position is provided with a first screw hole.

[0008] Furthermore, the installation position is a square recessed structure, which is recessed toward the inside of the control box. The first screw hole includes four screw holes, and the four screw holes are respectively arranged at the four corners of the square recessed structure.

[0009] Furthermore, the cable sealing gasket includes a base gasket, a through truncated cone structure and a through cylindrical structure, the base gasket, the truncated cone structure and the cylindrical structure are integrally formed, the base gasket is provided with the first through hole, the truncated cone structure extends outward from the base gasket along the outer circumference of the first through hole, and the cylindrical structure extends outward from the truncated cone structure, the radius of one bottom surface of the truncated cone structure is equal to the radius of the first through hole, the radius of the other bottom surface of the truncated cone structure is equal to the radius of the bottom surface of the cylindrical structure, the radius of the first through hole is greater than the bottom surface radius of the cylindrical structure, the length of the cylindrical structure is greater than the thickness of the base gasket, the area of ​​the base gasket squeezed by the bottom cover is greater than the area of ​​the first through hole, and the cable passes through the sealing gasket pressure cover, the base gasket, the truncated cone structure and the cylindrical structure in sequence and is inserted into the interior of the control box through the hole.

[0010] Furthermore, the bottom gasket has a second screw hole, and the bottom cover has a third screw hole, and the position of the second screw hole matches the position of the third screw hole. When the cable is inserted into the control box, the sealing gasket cover and the cable sealing gasket are fixedly connected into one through the third screw hole and the second screw hole, and then fixed to the control box through the first screw hole.

[0011] Furthermore, the bottom cover is a square structure, the third screw hole includes four screw holes, the four screw holes are respectively arranged at the four corners of the corresponding square structure, and the second through hole is located at the center of the corresponding square structure.

[0012] Furthermore, the base pad is a square structure, the second screw hole includes four screw holes, the four screw holes are respectively arranged at the four corners of the corresponding square structure, and the first through hole is located at the center of the corresponding square structure; wherein the square structure of the base pad and the square structure of the bottom cover are equal in size.

[0013] Furthermore, the diameter of the cable is 1-3 mm.

[0014] Furthermore, the cable sealing gasket is a rubber gasket, and the sealing gasket gland is a hardened nylon gland.

[0015] Furthermore, the control box is a waterproof box.

[0016] Compared with the prior art, the utility model has the beneficial effect of: a control box cable sealing waterproof structure, comprising a control box, a cable, a cable sealing pad for waterproofing, and a sealing pad pressure cover for squeezing the cable sealing pad and supporting the cable. Wherein, both ends of the control box are provided with a hole for the cable to pass through and an installation position for installing the cable sealing pad, the cable sealing pad has a first through hole for the cable to pass through, the sealing pad pressure cover comprises an integrally formed bottom cover and a through round table, and the bottom cover has a second through hole for the cable to pass through. During assembly, the cable passes through the round table, the bottom cover and the cable sealing pad in sequence and then is inserted into the interior of the control box through the hole. The cable sealing pad is squeezed by the bottom cover and fixed to the installation position. The cable sealing pad presses against the bottom cover to form a sealing pad waterproof surface. The sealing pad waterproof surface formed by extrusion is a surface sealing structure, which is currently the waterproof structure with the best waterproof effect. And after the cable sealing pad is squeezed, it is interference-fitted with the cable at the position of the first through hole to form an extrusion sealing area. Compared with the traditional non-extruded fitted sealed annular waterproof barrier, the waterproof performance of the extrusion sealing area is further improved. It can be seen that the waterproof surface of the sealing pad and the extrusion sealing area together form a strict extrusion sealing waterproof area, that is, after the sealing isolation of the extrusion sealing waterproof area, the moisture outside the control box cannot enter the interior of the control box. In addition, the truncated table provides support for the inserted cable to prevent the cable located near the truncated table from swaying due to lack of support when bending at a large angle, thereby affecting the cable sealing pad and causing it to deform, destroying the extrusion sealing waterproof area that has been formed, and allowing more or less moisture to enter the interior of the control box. It can be seen that the control box cable sealing waterproof structure not only reduces the probability of deformation of the cable sealing pad, but also greatly improves the waterproof performance of the control box, can effectively prevent moisture from entering the interior of the control box, ensure the safety and effectiveness of the charging process, and further extend the service life of the control box and the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0018] Figure 1 A schematic diagram of the structure of the cable sealing and waterproof structure of the control box provided by an embodiment of the utility model;

[0019] Figure 2 A structural side view of a control box cable sealing and waterproof structure provided by an embodiment of the utility model;

[0020] Figure 3 for Figure 2 Cross-sectional view of the AA plane of the cable sealing waterproof structure of the middle control box;

[0021] Figure 4 A structural side view of a sealing gasket gland provided in an embodiment of the utility model;

[0022] Figure 5 A structural front view of a sealing gasket gland provided in an embodiment of the utility model;

[0023] Figure 6 A structural side view of a cable sealing pad provided in an embodiment of the utility model;

[0024] Figure 7 This is a structural front view of a cable sealing pad provided in an embodiment of the utility model.

[0025] The following are the descriptions of the reference numerals:

[0026] 10-control box, 20-cable, 30-cable sealing gasket, 40-sealing gasket pressure cover, 301-bottom gasket, 302-cone structure, 303-cylindrical structure, 304-second screw hole, 401-bottom cover, 402-cone, 403-third screw hole. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the scheme in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0030] Please refer to Figure 1 , which is a structural schematic diagram of the control box cable sealing and waterproof structure provided by an embodiment of the utility model.

[0031] The utility model proposes a control box cable sealing and waterproof structure, which is applied to an AC charging gun for a new energy vehicle, comprising a control box 10 and a cable 20, and also comprising a cable sealing pad 30 for waterproofing and a sealing pad gland 40 for squeezing the cable sealing pad 30 and supporting the cable 20; wherein both ends of the control box 10 are provided with a hole for the cable 20 to pass through and an installation position for installing the cable sealing pad 30, the cable sealing pad 30 is provided with a first through hole for the cable 20 to pass through, the sealing pad gland 40 comprises an integrally formed bottom cover 401 and a through frustum 402, the bottom cover 401 is provided with a second through hole for the cable 20 to pass through, the bottom cover 401 extends the frustum 402 outward along the outer circumference of the second through hole, the radius of one bottom surface of the frustum 402 is equal to the radius of the second through hole, and the radius of the other bottom surface of the frustum 402 is smaller than the radius of the second through hole;

[0032] The cable 20 passes through the other bottom surface of the truncated cone 402, one bottom surface of the truncated cone 402, the bottom cover 401 and the cable sealing gasket 30 in sequence and is then inserted into the interior of the control box 10 through the hole. The cable sealing gasket 30 is squeezed by the bottom cover 401 and fixed at the installation position. The squeezed cable sealing gasket 30 and the cable 20 are interference fit at the first through hole position.

[0033] Specifically, the function of the sealing pad gland 40 is to squeeze the cable sealing pad 30 and prevent the cable 20 near the installation position from bending and deforming. The cable sealing pad 30 is squeezed by the sealing pad gland 40 and covered by the sealing pad gland 40, which can not only achieve the effect of squeezing the cable sealing pad 30 to form a surface sealing structure, but also further protect the cable sealing pad 30 from the influence of the harsh external environment, prevent pollution and sun, greatly delay the aging speed of the cable sealing pad 30, and further extend the service life of the cable sealing pad 30.

[0034] Compared with the prior art, the control box cable sealing and waterproof structure proposed in this embodiment includes a control box 10, a cable 20, a cable sealing pad 30 for waterproofing, and a sealing pad pressure cover 40 for squeezing the cable sealing pad 30 and supporting the cable 20. Among them, both ends of the control box 10 are provided with a hole for the cable 20 to pass through and an installation position for installing the cable sealing pad 30, the cable sealing pad 30 is provided with a first through hole for the cable 20 to pass through, and the sealing pad pressure cover 40 includes an integrally formed bottom cover 401 and a through round table 402, and the bottom cover 401 is provided with a second through hole for the cable 20 to pass through. During assembly, the cable 20 passes through the round table 402, the bottom cover 401 and the cable sealing pad 30 in sequence, and then is inserted into the interior of the control box 10 through the hole. The cable sealing pad 30 is squeezed by the bottom cover 401 and fixed at the installation position. The cable sealing pad 30 presses against the bottom cover 401 to form a sealing pad waterproof surface. The waterproof surface of the sealing pad formed by extrusion is a surface sealing structure, which is the waterproof structure with the best waterproof effect at present. After the cable sealing pad 30 is extruded, it is interference-fitted with the cable 20 at the position of the first through hole to form an extrusion sealing area. Compared with the traditional non-extruded fitting sealed annular waterproof barrier, the waterproof performance of the extrusion sealing area is further improved. It can be seen that the waterproof surface of the sealing pad and the extrusion sealing area together form a strict extrusion sealing waterproof area, that is, after the sealing isolation of the extrusion sealing waterproof area, the moisture outside the control box 10 cannot enter the inside of the control box 10. In addition, the truncated table 402 provides support for the inserted cable 20 to prevent the cable 20 located near the truncated table 402 from swaying due to lack of support when bending at a large angle, thereby affecting the cable sealing pad 30 and causing it to deform, destroying the extrusion sealing waterproof area that has been formed, and allowing more or less moisture to enter the inside of the control box 10. It can be seen that the control box cable sealing and waterproof structure not only reduces the probability of deformation of the cable sealing pad 30, but also greatly improves the waterproof performance of the control box 10, and can effectively prevent moisture from entering the interior of the control box 10, thereby ensuring the safety and effectiveness of the charging process and further extending the service life of the control box 10 and the cable 20.

[0035] Please refer to Figure 2 , which is a structural side view of the control box cable sealing and waterproof structure provided by an embodiment of the utility model.

[0036] Please refer to Figure 3 , which is Figure 2 Cross-sectional view of the AA plane of the cable sealing waterproof structure of the middle control box.

[0037] In some embodiments of the present application, the hole is located at the center of the mounting position, and the mounting position is provided with a first screw hole.

[0038] Specifically, setting the hole at the center of the installation position can make the cable 20 at the hole more evenly stressed, which is beneficial to improving the stability and reliability of the control box cable sealing and waterproof structure.

[0039] In some embodiments of the present application, the mounting position is a square recessed structure, which is recessed toward the interior of the control box 10. The first screw hole includes four screw holes, which are respectively arranged at the four corners of the square recessed structure.

[0040] Specifically, the first screw hole includes four screw holes, which are respectively located at the four corners of the square recessed structure. All the screw holes are evenly distributed in the installation position, which can further ensure that the forces in all directions are balanced during the tightening of the screws, and the screws are not prone to tilt or offset, thereby improving the stability and durability of the control box cable sealing and waterproof structure.

[0041] Please refer to Figure 4 and Figure 5 , which are the structural side view and structural front view of the sealing gasket cover 40 provided in the embodiment of the utility model.

[0042] Specifically, the sealing gasket gland 40 includes an integrally formed bottom cover 401 and a through truncated cone 402. It should be noted that the sealing gasket gland 40 can also be a connector including an integrally formed bottom cover 401 and a through truncated cone-shaped cavity arranged inside, and the truncated cone-shaped cavity extends outward from the second through hole of the bottom cover 401. The outside of the connector can be truncated cone-shaped or cylindrical or other shapes, as long as the part inside that allows the cable 20 to pass through is a through truncated cone shape. The truncated cone shape can not only ensure seamless connection with the second through hole of the bottom cover 401, but also maximize the contact area with the cable 20 by gradually reducing the radius, so as to provide better support for the cable 20. Of course, the sealing gasket gland 40 uses a through truncated cone 402, which can best reflect the overall aesthetics and integrity of the structure.

[0043] Please refer to Figure 6 and Figure 7 , which are the structural side view and structural front view of the cable sealing pad 30 provided in an embodiment of the utility model.

[0044] In some embodiments of the present application, the cable sealing gasket 30 includes a base pad 301, a through truncated cone structure 302 and a through cylindrical structure 303, wherein the base pad 301, the truncated cone structure 302 and the cylindrical structure 303 are integrally formed, the base pad 301 is provided with the first through hole, the truncated cone structure 302 is extended outwardly from the base pad 301 along the outer circumference of the first through hole, the cylindrical structure 303 is extended outwardly from the truncated cone structure 302, and the radius of a bottom surface of the truncated cone structure 302 is equal to the radius of the first through hole. etc., the radius of the other bottom surface of the truncated cone structure 302 is equal to the bottom surface radius of the cylindrical structure 303, the radius of the first through hole is larger than the bottom surface radius of the cylindrical structure 303, the length of the cylindrical structure 303 is larger than the thickness of the bottom pad 301, the area of ​​the bottom pad 301 squeezed by the bottom cover 401 is larger than the area of ​​the first through hole, the cable 20 passes through the sealing gasket cover 40, the bottom pad 301, the truncated cone structure 302 and the cylindrical structure 303 in sequence, and then is inserted into the interior of the control box 10 through the hole.

[0045] Specifically, the truncated cone structure 302 of the cable sealing pad 30 plays a transition role. The radius of the front bottom surface is large, which is convenient for inserting the cable 20, and the radius of the other rear bottom surface is relatively small, which is conducive to guiding the inserted cable 20 from the first through hole into the inner cavity of the cylindrical structure 303, so that the cylindrical structure 303 wraps the cable 20 to form an extrusion sealing area.

[0046] Specifically, the traditional cable 20 fits with the waterproof sealing rubber ring in the thickness direction of the waterproof sealing rubber ring to form a circular waterproof barrier. The bottom pad 301 of the cable sealing pad 30 is equivalent to the traditional waterproof sealing rubber ring. The length of the cylindrical structure 303 is greater than the thickness of the bottom pad 301, that is, greater than the thickness of the traditional waterproof sealing rubber ring. The cable sealing pad 30 firmly fastens the cable 20 through the cylindrical structure 303, and the cable 20 and the cable sealing pad 30 fit tightly in the length direction of the cylindrical structure 303 to form a cylindrical extrusion sealing area. Therefore, the interference fit between the cable sealing pad 30 and the cable 20 is deeper and larger in area, and the extrusion sealing area formed is wider, which has a better waterproof effect on the control box 10. The area of ​​the bottom pad 301 squeezed by the bottom cover 401 is greater than the area of ​​the first through hole, which can also further make the area of ​​the surface sealing structure larger, thereby improving the waterproof effect. In summary, the cable 20 , the cable sealing gasket 30 and the sealing gasket gland 40 cooperate with each other to effectively prevent moisture penetration and ensure that the interior of the control box 10 remains dry for a long time.

[0047] In some embodiments of the present application, the bottom pad 301 has a second screw hole 304, and the bottom cover 401 has a third screw hole 403. The position of the second screw hole 304 matches the position of the third screw hole 403. When the cable 20 is inserted into the control box 10, the sealing gasket cover 40 and the cable sealing gasket 30 are fixedly connected as a whole through the third screw hole 403 and the second screw hole 304, and then fixed to the control box 10 through the first screw hole screws.

[0048] Specifically, the second screw hole 304 includes a plurality of screw holes, all of which are evenly distributed on the bottom pad 301. The third screw hole 403 includes a plurality of screw holes, all of which are evenly distributed on the bottom cover 401. The screw fixing method using screw holes and screws makes the assembly process of the waterproof structure of the control box 10 simpler and faster, reduces construction time and labor costs, and facilitates quick disassembly and repair.

[0049] In some embodiments of the present application, the bottom cover 401 is a square structure, the third screw hole 403 includes four screw holes, the four screw holes are respectively arranged at the four corners of the corresponding square structure, and the second through hole is located at the center of the corresponding square structure.

[0050] In some embodiments of the present application, the base pad 301 is a square structure, the second screw hole 304 includes four screw holes, the four screw holes are respectively arranged at the four corners of the corresponding square structure, and the first through hole is located at the center of the corresponding square structure; wherein the square structure of the base pad 301 and the square structure of the bottom cover 401 are equal in size.

[0051] Specifically, after the cable 20 passes through the sealing gasket cover 40 and the cable sealing gasket 30, the screw holes located at the four corners of the square structure are used to cooperate with the assembly screws and then are tightened by an electric screwdriver through the first screw holes opened at the installation position. The assembly is convenient and the squeezing force of the sealing gasket cover 40 on the cable sealing gasket 30 can be adjusted by the tightening degree of the screws, thereby improving the controllability of the waterproof effect of the control box 10.

[0052] In some embodiments of the present application, the diameter of the cable 20 is 1-3 mm.

[0053] Specifically, the cable 20 with a diameter of 1-3 mm can ensure that the AC charging gun of the new energy vehicle will not overheat or be damaged due to excessive current when transmitting electric energy, which is beneficial to ensuring charging safety and efficiency.

[0054] In some embodiments of the present application, the cable sealing gasket 30 is a rubber gasket, and the sealing gasket gland 40 is a hardened nylon gland.

[0055] Specifically, the rubber structure has good temperature adaptability, sealing, high and low temperature resistance and other characteristics. Through precise size design, it can ensure that an effective waterproof seal is formed on the parts that fit closely with it to prevent liquid from penetrating from the joints. The cable sealing gasket 30 made of rubber material has good waterproof performance and strong compatibility, and can be compatible with cables 20 with a diameter of about 1-3mm. Of course, the cable sealing gasket 30 can also be designed according to different waterproof requirements and environmental conditions, and has strong adaptability.

[0056] Specifically, the hardened nylon gland is a gland made of reinforced nylon material, which has high hardness and wear resistance, can withstand greater pressure and impact, and is suitable for use in situations requiring high strength and durability. It is particularly suitable for use with the cable 20 of the AC charging gun that needs to withstand high-frequency stretching and large-angle bending.

[0057] In some embodiments of the present application, the control box 10 is a waterproof box.

[0058] Specifically, the control box 10 usually has a certain waterproof function to ensure safety and reliability when used outdoors or in a humid environment. In order to improve the waterproof performance, the shell of the control box 10 can be made of PC (Polycarbonate), which has good waterproof properties and can resist wear and tear in daily use. The control box 10 has an IP68 dust and waterproof rating, which means that the control box 10 can prevent dust from entering and can still maintain normal operation in the case of short-term immersion in water.

[0059] The control box cable sealing and waterproof structure provided in this embodiment is a control box waterproof structure, which is mainly used to further improve the waterproof performance of the control box 10 and ensure the normal operation of the control board circuit in the control box 10. The control box cable sealing and waterproof structure solves the problem that the cable sealing pad 30 is easily deformed due to the bending of the cable 20, and effectively prevents the occurrence of the event that the sealing and waterproof performance of the control box 10 is weakened due to the bending of the cable 20. The assembly method is convenient, the disassembly is convenient, and the feasibility is strong.

[0060] It should be noted that the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0061] The above description is only a partial or preferred embodiment of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A control box cable sealing and waterproof structure, applied to the AC charging gun of new energy vehicles, including a control box and a cable, characterized in that: It also includes a cable sealing gasket for waterproofing and a sealing gasket gland for squeezing the cable sealing gasket and supporting the cable; wherein, both ends of the control box are provided with a hole for the cable to pass through and an installation position for installing the cable sealing gasket, the cable sealing gasket is provided with a first through hole for the cable to pass through, the sealing gasket gland includes an integrally formed bottom cover and a through frustum, the bottom cover is provided with a second through hole for the cable to pass through, the bottom cover extends the frustum outward along the outer circumference of the second through hole, the radius of one bottom surface of the frustum is equal to the radius of the second through hole, and the radius of the other bottom surface of the frustum is smaller than the radius of the second through hole; The cable passes through the other bottom surface of the truncated cone, one bottom surface of the truncated cone, the bottom cover and the cable sealing gasket in sequence and is then inserted into the interior of the control box through the hole. The cable sealing gasket is squeezed by the bottom cover and fixed at the installation position. The squeezed cable sealing gasket and the cable are interference fit at the first through hole position.

2. The control box cable sealing and waterproof structure according to claim 1, characterized in that: The hole is located at the center of the installation position, and the installation position is provided with a first screw hole.

3. The control box cable sealing and waterproof structure according to claim 2, characterized in that: The installation position is a square recessed structure, which is recessed toward the inside of the control box. The first screw hole includes four screw holes, which are respectively arranged at the four corners of the square recessed structure.

4. The control box cable sealing and waterproof structure according to claim 3, characterized in that: The cable sealing gasket includes a base pad, a through truncated cone structure and a through cylindrical structure, the base pad, the truncated cone structure and the cylindrical structure are integrally formed, the base pad is provided with the first through hole, the base pad extends the truncated cone structure outward along the outer circumference of the first through hole, and the cylindrical structure extends outward from the truncated cone structure, the radius of one bottom surface of the truncated cone structure is equal to the radius of the first through hole, the radius of the other bottom surface of the truncated cone structure is equal to the radius of the bottom surface of the cylindrical structure, the radius of the first through hole is greater than the bottom surface radius of the cylindrical structure, the length of the cylindrical structure is greater than the thickness of the base pad, the area of ​​the base pad squeezed by the bottom cover is greater than the area of ​​the first through hole, and the cable passes through the sealing gasket pressure cover, the base pad, the truncated cone structure and the cylindrical structure in sequence and is inserted into the interior of the control box through the hole.

5. The control box cable sealing and waterproof structure according to claim 4, characterized in that: The bottom gasket is provided with a second screw hole, and the bottom cover is provided with a third screw hole. The position of the second screw hole matches the position of the third screw hole. When the cable is inserted into the control box, the sealing gasket cover and the cable sealing gasket are fixedly connected into one through the third screw hole and the second screw hole, and then fixed to the control box through the first screw hole screws.

6. The control box cable sealing and waterproof structure according to claim 5, characterized in that: The bottom cover is a square structure, the third screw hole includes four screw holes, the four screw holes are respectively arranged at the four corners of the corresponding square structure, and the second through hole is located at the center of the corresponding square structure.

7. The control box cable sealing and waterproof structure according to claim 6, characterized in that: The base pad is a square structure, the second screw hole includes four screw holes, the four screw holes are respectively arranged at the four corners of the corresponding square structure, and the first through hole is located at the center of the corresponding square structure; wherein the square structure of the base pad and the square structure of the bottom cover are equal in size.

8. The control box cable sealing and waterproof structure according to claim 1, characterized in that: The diameter of the cable is 1-3 mm.

9. The control box cable sealing and waterproof structure according to claim 1, characterized in that: The cable sealing pad is a rubber pad, and the sealing pad gland is a hardened nylon gland.

10. The control box cable sealing and waterproof structure according to claim 1, characterized in that: The control box is a waterproof box.

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