A waterproof plug for new energy vehicles

Abstract

The present invention belongs to the technical field of new energy vehicles, and in particular, relates to a waterproof plug for new energy vehicles, which includes a semicircular plug, a charging head shell, and a handle. The plug is designed with a baffle, which is obliquely installed on a disc to block the third heat dissipation hole opened on the disc, so as to prevent the plug from falling rainwater from splashing onto the inner side of the charging head shell through the third heat dissipation hole on rainy days, causing the plug to short-circuit. When charging, the second heat dissipation hole opened on the first sealing plate and the first heat dissipation hole opened on the second sealing plate are aligned one by one; the heat dissipation effect is achieved through the first heat dissipation hole, the second heat dissipation hole and the third heat dissipation hole. When not charging, the second heat dissipation hole opened on the first sealing plate and the first heat dissipation hole opened on the second sealing plate are distributed in a staggered semicircle one by one; air circulates inside and outside the charging head shell to prevent the water vapor entering during the charging process from being unable to dissipate in the sealed space and corroding the electronic components.

Description

Technical Field

[0001] The invention belongs to the technical field of new energy vehicles, and in particular relates to a waterproof plug for new energy vehicles. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as their power source (or use conventional automotive fuels and adopt new on-board power devices), and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures.

[0003] A pure electric vehicle is a car that uses a single battery as an energy storage power source. It uses the battery as an energy storage power source, provides electrical energy to the electric motor through the battery, drives the electric motor to operate, and thus drives the car.

[0004] Pure electric vehicles need to charge the energy storage power source, that is, the battery, during use, and charging requires a charging pile. When charging, the charging pile is connected to the battery of the electric vehicle through a plug; however, the following aspects need to be paid attention to when using the charging pile:

[0005] 1. When the plug on the charging pile is charging the car, on the one hand, its internal structure needs to be cooled to ensure safety; on the other hand, when charging in rainy weather, it is also necessary to prevent rainwater from seeping into the plug through the heat dissipation holes and causing the plug to short-circuit.

[0006] 2. When the plug on the charging pile is not in use and is hung on the charging pile, on the one hand, when it rains, it is necessary to prevent rainwater from seeping into the plug and causing a short circuit; on the other hand, in order to ensure the dryness of the internal structure of the plug, it needs to be ventilated.

[0007] 3. If people accidentally drop the plug on the ground during use and do not find it and pick it up in time, if there is water on the ground, the water may seep into the plug and cause a short circuit. At this time, the heat dissipation holes of the plug need to be sealed.

[0008] Therefore, it is necessary to design a charging pile plug that can solve the above problems.

[0009] The present invention designs a new energy vehicle waterproof plug to solve the above problems. Summary of the invention

[0010] In order to solve the above defects in the prior art, the present invention discloses a new energy vehicle waterproof plug, which is implemented by adopting the following technical solutions.

[0011] A waterproof plug for new energy vehicles, comprising a semicircular plug, a charging head shell, and a handle, wherein the front end of the charging head shell is provided with a semicircular plug, and the semicircular plug is provided with a socket; a handle is installed at the rear end of the charging head shell, and a wire hole is opened on the inner side of the handle; an electronic module is installed on the inner side of the charging head shell, one end of the wire is connected to the electronic module, and the other end of the wire passes through the wire hole on the handle and is connected to the charging pile; it is characterized in that: a plurality of heat dissipation units are symmetrically installed on both sides of the charging head shell.

[0012] The above-mentioned heat dissipation unit includes a clamping ring, a first sealing plate, and a second sealing plate, wherein the clamping ring is installed on the side of the charging barrel shell, and a disc is fixedly installed at one end of the clamping ring located on the outside of the charging head shell, and the disc is provided with third heat dissipation holes evenly distributed in rows, and a plurality of baffles are evenly and obliquely installed on the side of the disc to cooperate with the third heat dissipation holes on the disc, and each baffle corresponds to a row of third heat dissipation holes; a plurality of second heat dissipation holes are evenly opened on the first sealing plate in a circumferential direction, and the first sealing plate is fixedly installed on the inner side of the charging head shell, and the first sealing plate is aligned and matched with the clamping ring; a plurality of first heat dissipation holes are evenly opened on the second sealing plate in a circumferential direction, and the second sealing plate is rotatably installed on the inner side of the charging head shell, and the first heat dissipation holes on the second sealing plate correspond one-to-one with the second heat dissipation holes on the first sealing plate.

[0013] The trigger bar is slidably installed at the front end of the charging head shell, and the trigger bar drives the second sealing plate in the above-mentioned heat dissipation unit to rotate through the transmission of the rack; a tightening spring is installed between the trigger bar and the charging head shell; the tightening spring has a pre-pressure.

[0014] The charging head housing is also provided with a water-proof trigger mechanism for controlling whether the trigger bar can slide outward.

[0015] When charging, the trigger bar is pressed into the charging head shell at the longest length, and the second heat dissipation holes opened on the first sealing plate and the first heat dissipation holes opened on the second sealing plate are aligned one by one; when not charging, the trigger bar is popped out by the tightened spring, but is limited by the anti-seepage trigger mechanism to continue to pop out, and the second heat dissipation holes opened on the first sealing plate and the first heat dissipation holes opened on the second sealing plate are distributed in a staggered semicircle one by one; when the anti-seepage trigger mechanism releases the limit on the continued popping out of the trigger bar, the trigger bar extends out of the charging head shell at the longest length; the second heat dissipation holes opened on the first sealing plate and the first heat dissipation holes opened on the second sealing plate are in a one-to-one correspondence and completely staggered to achieve sealing.

[0016] As a further improvement of the present technology, a plurality of heat dissipation unit mounting holes are symmetrically opened on both sides of the above-mentioned charging head shell, and a nested ring groove is opened on the outer circular surface of the clamping ring, and the clamping ring is nested and installed in the heat dissipation unit mounting hole through the nested ring groove; one end of the fixing rod is fixedly installed on the disc installed on the clamping ring, and the other end of the fixing rod passes through the first sealing plate, and the second sealing plate is rotatably installed on the fixing rod; the other end of the fixing rod is fixedly installed with a counterweight block through a connecting plate.

[0017] As a further improvement of the present technology, the outer circular surface of the above-mentioned second sealing plate is provided with teeth, and the trigger bar is inserted into one end of the inner side of the charging head shell and two first connecting rods are symmetrically installed. The two racks are slidably installed on the inner side of the charging head shell through two first guide supports, and the two racks are meshed with the teeth on the outer circular surface of the second sealing plate in the heat dissipation units on both sides; the two first connecting rods are respectively fixedly connected to one end of the two racks.

[0018] As a further improvement of the present technology, a first adjustment plate is fixedly installed on one end of the trigger bar that penetrates into the inner side of the charging head shell, and a clamping block is provided on the end of the first adjustment plate away from the trigger bar. A spring fixed support is fixedly installed on the inner wall of the charging head shell, one end of the tightening spring is fixedly installed on the clamping block, and the other end of the tightening spring is fixedly installed on the spring fixed support.

[0019] As a further improvement of the present technology, one end of the guide rod is fixedly mounted on the above-mentioned clamping block, and the other end of the guide rod is slidably matched with the spring fixed support, and the guide rod is located on the inner side of the tightening spring.

[0020] As a further improvement of the present technology, the above-mentioned anti-water seepage trigger mechanism includes a sliding shell, a limiting mechanism, a second guide support, a connecting rod, a trigger block, and a reset spring, wherein two square openings are symmetrically opened on both side surfaces of the charging head shell, the sliding shell is fixedly installed on the wall surface of the charging head shell, the limiting mechanism is slidably installed on the sliding shell, and a reset spring is installed between the limiting mechanism and the two side surfaces of the sliding shell; the two trigger blocks are slidably installed on the square openings opened on the charging head shell, and the two second connecting rods are respectively installed in the charging head shell through a second guide support, one end of the two second connecting rods is respectively fixedly installed on the two trigger blocks, and the other ends of the two second connecting rods are respectively squeezed and fitted with the two sides of the limiting mechanism.

[0021] The above-mentioned limiting mechanism includes a limiting spring, a limiting shell, and a limiting block, wherein one end of the limiting shell is an open end, and the other end of the limiting shell is slidably installed on the sliding shell, one end of the limiting block has an inclined surface, and the other end of the limiting block is slidably installed in the limiting shell, and a limiting spring is installed between one end of the limiting block located in the limiting shell and the inner end surface of the limiting shell; the end of the limiting block with the inclined surface cooperates with the block on the first adjusting plate.

[0022] One end of the return spring is fixedly mounted on the limiting shell, and the other end of the return spring is fixedly mounted on the inner end surface of the sliding shell.

[0023] When the person has not fallen to the ground, the side surface of the limiting block without the inclined surface contacts and cooperates with the clamping block on the first adjusting plate, and under the pre-pressure of the tightening spring, the limiting block and the clamping block are in close contact.

[0024] As a further improvement of the present technology, two first guide grooves are symmetrically opened on both sides of the sliding shell, and two first guide blocks are symmetrically installed on both sides of the unopened end of the limiting shell. The limiting shell is installed in the sliding shell through the sliding cooperation between the two first guide blocks and the two first guide grooves.

[0025] As a further improvement of the present technology, two second guide grooves are symmetrically opened on the two side surfaces of the above-mentioned limit shell, and two second guide blocks are symmetrically installed on both sides of the limit block without an inclined surface. The limit block is installed in the limit shell through the sliding cooperation between the two second guide blocks and the two second guide grooves.

[0026] As a further improvement of the present technology, the above-mentioned return spring is a compression spring and has a pre-pressure; the limit spring is a compression spring.

[0027] As a further improvement of the present technology, a sliding sealing mechanism is installed between the trigger strip and the charging head housing, and a sliding sealing mechanism is installed between the trigger block and the charging head housing.

[0028] Compared with traditional new energy vehicle technology, the beneficial effects of the design of the present invention are as follows:

[0029] 1. The plug designed by the present invention is designed with a baffle, which is controlled by a counterweight block. The baffle is always facing downward. The baffle is obliquely installed on the disc to shield the third heat dissipation hole on the disc, preventing rainwater from splashing onto the inner side of the charging head housing through the third heat dissipation hole on rainy days, causing a short circuit in the plug.

[0030] 2. With the plug designed in the present invention, when charging, the second heat dissipation holes opened on the first sealing plate and the first heat dissipation holes opened on the second sealing plate are aligned one by one; in this state, the second heat dissipation holes are connected to the first heat dissipation holes, and air circulates inside and outside the charging head shell. The heat generated by the electronic module in the charging head shell during the charging process can flow out of the outside of the charging head shell through the first heat dissipation holes, the second heat dissipation holes and the third heat dissipation holes, thereby achieving a heat dissipation effect. Moreover, since the second heat dissipation holes and the first heat dissipation holes are in a fully open state, the heat dissipation effect is best.

[0031] 3. In the plug designed by the present invention, when not charging, the second heat dissipation holes opened on the first sealing plate and the first heat dissipation holes opened on the second sealing plate are arranged in a staggered semicircle in correspondence with each other; in this state, the second heat dissipation holes are connected to the first heat dissipation holes, and air circulates inside and outside the charging head shell. The dryness of the internal structure of the charging head shell is ensured by the flowing air, that is, the moisture entering during the charging process is prevented from being unable to dissipate in the sealed space and corroding the electronic components.

[0032] 4. When the plug falls on the ground, the anti-seepage trigger mechanism disengages the limit mechanism from the block on the first adjustment plate. After the limit mechanism and the block are disengaged, the block will push the first adjustment plate to slide to the side away from the tightening spring under the action of the tightening spring, so that the first heat dissipation hole on the second sealing plate and the second heat dissipation hole on the first sealing plate are misaligned, and the first heat dissipation hole and the second heat dissipation hole are sealed, preventing the accumulated water on the ground from flowing into the inner side of the charging head housing from the first heat dissipation hole, the second heat dissipation hole and the third heat dissipation hole to cause a short circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall appearance of the components.

[0034] Figure 2 It is a schematic diagram of the overall component distribution.

[0035] Figure 3 It is a schematic diagram of the charging head housing structure.

[0036] Figure 4 It is a schematic diagram of the distribution of heat dissipation units.

[0037] Figure 5 This is a schematic diagram of the rack installation.

[0038] Figure 6 It is a schematic diagram of the structure of the anti-seepage trigger mechanism.

[0039] Figure 7 This is a schematic diagram of the installation of the limit mechanism.

[0040] Figure 8 It is a schematic diagram of the limit mechanism structure.

[0041] Fig. 9 This is a schematic diagram of the heat dissipation unit installation.

[0042] Fig.10 It is a schematic diagram of the heat dissipation unit structure.

[0043] Fig.11 It is a schematic diagram of the structure of the first sealing plate and the second sealing plate.

[0044] Fig.12 It is a schematic diagram of the snap ring structure.

[0045] Names of the symbols in the figure: 1. semicircular plug; 2. trigger bar; 3. charging head housing; 4. anti-water seepage trigger mechanism; 5. heat dissipation unit; 6. handle; 7. adjustment mechanism; 8. electronic module; 9. socket; 10. wire hole; 11. heat dissipation unit mounting hole; 12. square hole; 13. rack; 14. first guide support; 15. first adjustment plate; 16. block; 17. tightening spring; 18. guide rod; 19. spring fixing support; 20. sliding shell; 21. limit mechanism; 22. second guide support; 23. first Two connecting rods; 24, trigger block; 25, return spring; 26, first guide block; 27, first guide groove; 28, second guide groove; 29, limit spring; 30, limit shell; 31, second guide block; 32, limit block; 33, wire; 34, clamping ring; 35, first sealing plate; 36, second sealing plate; 37, counterweight; 38, fixing rod; 39, connecting plate; 40, first heat dissipation hole; 41, second heat dissipation hole; 42, third heat dissipation hole; 43, baffle; 44, nested ring groove; 45, first connecting rod; 46, disc. DETAILED DESCRIPTION

[0046] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples or drawings are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0047] like Figure 1 , 2 As shown, a waterproof plug for new energy vehicles includes a semicircular plug 1, a charging head housing 3, and a handle 6, wherein the front end of the charging head housing 3 has a semicircular plug 1, and the semicircular plug 1 has a socket 9; the rear end of the charging head housing 3 is equipped with a handle 6, and the inner side of the handle 6 is provided with a wire hole 10; the inner side of the charging head housing 3 is equipped with an electronic module 8, one end of the wire 33 is connected to the electronic module 8, and the other end of the wire 33 passes through the wire hole 10 on the handle 6 and is connected to the charging pile; the characteristics are as follows: Figure 1 , 2 As shown in Figure 4, multiple heat dissipation units 5 are symmetrically installed on both sides of the charging head housing 3.

[0048] like Fig.10 As shown, the heat dissipation unit 5 includes a clamp ring 34, a first sealing plate 35, and a second sealing plate 36. Fig. 9 As shown, the snap ring 34 is mounted on the side of the charging barrel housing, and a disc 46 is fixedly mounted on one end of the snap ring 34 located outside the charging head housing 3. Fig.12 As shown, the disk 46 is provided with third heat dissipation holes 42 that are evenly distributed in rows, and a plurality of baffles 43 are evenly and obliquely installed on the side of the disk 46 to cooperate with the third heat dissipation holes 42 on the disk 46, and each baffle 43 corresponds to a row of third heat dissipation holes 42; Fig.11As shown, the first sealing plate 35 is evenly provided with a plurality of second heat dissipation holes 41 on the circumference thereof. Figure 2 , 9 As shown, the first sealing plate 35 is fixedly mounted on the inner side of the charging head housing 3, and the first sealing plate 35 is aligned with the clamping ring 34; Fig.11 As shown, the second sealing plate 36 is evenly provided with a plurality of first heat dissipation holes 40 on the circumference thereof. Fig.10 As shown, the second sealing plate 36 is rotatably mounted on the inner side of the charging head housing 3, and the first heat dissipation holes 40 on the second sealing plate 36 are matched one by one with the second heat dissipation holes 41 on the first sealing plate 35. In the present invention, the third heat dissipation holes 42 opened on the disc 46 are shielded by the baffle 43 obliquely mounted on the disc 46 to prevent the plug from being splashed onto the inner side of the charging head housing 3 through the third heat dissipation holes 42 on rainy days, causing the plug to short-circuit.

[0049] like Figure 2 , 4 As shown, the trigger bar 2 is slidably installed at the front end of the charging head housing 3, and the trigger bar 2 drives the second sealing plate 36 in the above-mentioned heat dissipation unit 5 to rotate through the transmission of the rack 13; a tightening spring 17 is installed between the trigger bar 2 and the charging head housing 3; the tightening spring 17 has a pre-pressure.

[0050] like Figure 2 As shown, the charging head housing 3 is also provided with a water-proof trigger mechanism 4 for controlling whether the trigger bar 2 can slide outward.

[0051] When charging, the trigger bar 2 is pressed into the charging head shell 3 at the longest length, and the second heat dissipation holes 41 opened on the first sealing plate 35 and the first heat dissipation holes 40 opened on the second sealing plate 36 are aligned one by one; in this state, the second heat dissipation holes 41 and the first heat dissipation holes 40 are connected, and air circulates inside and outside the charging head shell 3. The heat generated by the electronic module 8 in the charging head shell 3 during the charging process can flow out of the outside of the charging head shell 3 through the first heat dissipation holes 40, the second heat dissipation holes 41 and the third heat dissipation holes 42 to achieve the heat dissipation effect, and because the second heat dissipation holes 41 and the first heat dissipation holes 40 are in a fully open state, the heat dissipation effect is the best; when not charging, the trigger bar 2 is popped out by the tightened spring 17, but is limited by the anti-seepage trigger mechanism and continues to pop out. The second heat dissipation holes 41 opened on the first sealing plate 35 and the first heat dissipation holes 40 opened on the second sealing plate 36 are distributed in a staggered semicircle in a one-to-one correspondence; in this state, the second heat dissipation holes 41 and the first heat dissipation holes 40 are connected, and air circulates inside and outside the charging head shell 3, and the dryness of the internal structure of the charging head shell 3 is ensured by the flowing air; in this state, the open areas of the first heat dissipation holes 40 and the second heat dissipation holes 41 are relatively small, but are sufficient to ensure the dryness of the internal structure of the charging head shell 3; when the anti-water seepage trigger mechanism 4 releases the limit on the continued pop-up of the trigger strip 2, the trigger strip 2 extends out of the charging head shell 3 to the longest length; the second heat dissipation holes 41 opened on the first sealing plate 35 and the first heat dissipation holes 40 opened on the second sealing plate 36 are in a one-to-one correspondence and are completely staggered to achieve sealing.

[0052] like Figure 3 As shown, the two sides of the charging head housing 3 are symmetrically provided with a plurality of heat dissipation unit mounting holes, such as Fig.12 As shown, the outer circumferential surface of the snap ring 34 is provided with a nested ring groove 44. Fig. 9 As shown, the snap ring 34 is nested and installed in the heat dissipation unit installation hole through the nested ring groove 44; one end of the fixing rod 38 is fixedly installed on the disc 46 installed on the snap ring 34, as shown in FIG. Fig.10 , 12 As shown, the other end of the fixing rod 38 passes through the first sealing plate 35, and the second sealing plate 36 is rotatably mounted on the fixing rod 38; Fig.11 As shown, the other end of the fixing rod 38 is fixedly mounted with a counterweight 37 via a connecting plate 39 .

[0053] The charging angles of the charging plug are different for different cars, but the plane formed by the charging head shell 3 and the handle 6 is mostly perpendicular to the ground. Therefore, in most charging situations, due to the gravity of the counterweight block 37, the clamping ring 34 will rotate accordingly, so that the baffles 43 installed on the disc 46 are all distributed obliquely downward, thereby shielding the third heat dissipation holes 42 on the disc 46.

[0054] like Figure 4 , 5As shown, the outer circumferential surface of the second sealing plate 36 is provided with teeth, and the trigger bar 2 is inserted into one end of the inner side of the charging head housing 3 and two first connecting rods 45 are symmetrically installed, and the two racks 13 are respectively slidably installed on the inner side of the charging head housing 3 through two first guide supports 14, and the two racks 13 are meshed with the teeth on the outer circumferential surface of the second sealing plate 36 in the heat dissipation units 5 on both sides; the two first connecting rods 45 are respectively fixedly connected to one end of the two racks 13.

[0055] When the trigger bar 2 slides under force, the trigger bar 2 will drive the two racks 13 to slide through the two first connecting rods 45. The sliding of the two racks 13 drives the second sealing plate 36 in the heat dissipation mechanism to rotate, thereby controlling the relative positions of the first heat dissipation holes 40 on the second sealing plate 36 and the second heat dissipation holes 41 on the first sealing plate 35.

[0056] like Figure 5 As shown, the end of the trigger bar 2 that penetrates into the inner side of the charging head housing 3 is fixedly mounted with a first adjustment plate 15, the end of the first adjustment plate 15 away from the trigger bar 2 has a clamping block 16, a spring fixing support 19 is fixedly mounted on the inner wall of the charging head housing 3, one end of the tightening spring 17 is fixedly mounted on the clamping block 16, and the other end of the tightening spring 17 is fixedly mounted on the spring fixing support 19.

[0057] like Figure 5 As shown, one end of the guide rod 18 is fixedly mounted on the above-mentioned block 16, and the other end of the guide rod 18 is slidably matched with the spring fixed support 19, and the guide rod 18 is located on the inner side of the tightening spring 17; the function of the guide rod 18 is to guide the tightening spring 17 to prevent it from being deformed and bent under pressure, thereby affecting the effect of the tightening spring 17 on the trigger bar 2.

[0058] like Figure 6 As shown, the anti-seepage trigger mechanism 4 includes a sliding shell 20, a limiting mechanism 21, a second guide support 22, a connecting rod, a trigger block 24, and a return spring 25. Figure 3 As shown, two square openings are symmetrically opened on both sides of the charging head housing 3, such as Figure 2 As shown, the sliding shell 20 is fixedly mounted on the wall surface of the charging head housing 3. Figure 6 , 7 As shown, the limiting mechanism 21 is slidably installed on the sliding shell 20, and a return spring 25 is installed between the two side surfaces of the limiting mechanism 21 and the sliding shell 20; the two trigger blocks 24 are slidably installed on the square opening opened on the charging head shell 3, and the two second connecting rods 23 are respectively installed in the charging head shell 3 through a second guide support 22, one end of the two second connecting rods 23 is respectively fixedly installed on the two trigger blocks 24, and the other ends of the two second connecting rods 23 are respectively squeezed and matched with the two sides of the limiting mechanism 21.

[0059] like Figure 8 As shown, the above-mentioned limiting mechanism 21 includes a limiting spring 29, a limiting shell 30, and a limiting block 32, wherein one end of the limiting shell 30 is an open end, and the other end of the limiting shell 30 is slidably installed on the sliding shell 20, one end of the limiting block 32 has an inclined surface, and the other end of the limiting block 32 is slidably installed in the limiting shell 30, and the limiting spring 29 is installed between one end of the limiting block 32 located in the limiting shell 30 and the inner end surface of the limiting shell 30; the end of the limiting block 32 with the inclined surface cooperates with the block 16 on the first adjustment plate 15.

[0060] One end of the return spring 25 is fixedly mounted on the limiting housing 30 , and the other end of the return spring 25 is fixedly mounted on the inner end surface of the sliding housing 20 .

[0061] When the person has not fallen to the ground, the side surface of the limit block 32 without the inclined surface contacts and cooperates with the clamping block 16 on the first adjustment plate 15 . Under the pre-pressure of the tightening spring 17 , the limit block 32 and the clamping block 16 are in close contact.

[0062] like Figure 7 As shown, two first guide grooves 27 are symmetrically opened on both sides of the sliding shell 20, and two first guide blocks 26 are symmetrically installed on both sides of the unopened end of the limiting shell 30. The limiting shell 30 is installed in the sliding shell 20 through the sliding cooperation between the two first guide blocks 26 and the two first guide grooves 27.

[0063] like Figure 8 As shown, two second guide grooves 28 are symmetrically opened on the two side surfaces of the above-mentioned limit shell 30, and two second guide blocks 31 are symmetrically installed on both sides of the limit block 32 without an inclined surface. The limit block 32 is installed in the limit shell 30 through the sliding fit between the two second guide blocks 31 and the two second guide grooves 28.

[0064] The return spring 25 is a compression spring with preload; the limit spring 29 is a compression spring.

[0065] A sliding sealing mechanism is installed between the trigger bar 2 and the charging head housing 3, and the sealing mechanism seals the sliding of the trigger bar 2; a sliding sealing mechanism is installed between the trigger block 24 and the charging head housing 3; the sealing mechanism seals the sliding of the trigger block 24.

[0066] The trigger strip 2 and the trigger block 24 of the present invention may be cylindrical, which is more convenient for sliding sealing.

[0067] Specific working process: when the plug designed in the present invention is used, when the non-charging plug is hung on the charging pile, under the pre-pressure of the tightening spring 17, the limit block 32 and the clamping block 16 are in close contact, the second heat dissipation hole 41 and the first heat dissipation hole 40 are connected, and air circulates inside and outside the charging head shell 3, and the dryness of the internal structure of the charging head shell 3 is ensured by the flowing air; in this state, the open area of ​​the first heat dissipation hole 40 and the second heat dissipation hole 41 is relatively small, but it is sufficient to ensure the dryness of the internal structure of the charging head shell 3.

[0068] When charging, after the plug is inserted into the charging port on the electric vehicle, the inner end surface of the charging port on the electric vehicle will squeeze the trigger strip 2 so that the trigger strip 2 slides toward the inside of the charging head housing 3, and the trigger strip 2 drives the two racks 13 to slide through the two first connecting rods 45. The two racks 13 slide and drive the second sealing plate 36 in the heat dissipation mechanism to rotate, so that the first heat dissipation hole 40 on the second sealing plate 36 and the second heat dissipation hole 41 on the first sealing plate 35 are connected. At this time, air circulates inside and outside the charging head housing 3, and the heat generated by the electronic module 8 in the charging head housing 3 during the charging process can flow out of the outside of the charging head housing 3 through the first heat dissipation hole 40, the second heat dissipation hole 41 and the third heat dissipation hole 42, thereby achieving the heat dissipation effect.

[0069] When the plug falls on the ground, the trigger block 24 on the side in contact with the ground will be subjected to the squeezing force of the ground. Under the squeezing force, the trigger block 24 slides inward, and the trigger block 24 slides through the second connecting rod 23 to squeeze the limiting mechanism 21, so that the limiting mechanism 21 is disengaged from the block 16 on the first adjusting plate 15. After the limiting mechanism 21 and the block 16 are disengaged, the block 16 will push the first adjusting plate 15 to slide to the side away from the tightening spring 17 under the action of the tightening spring 17. The sliding of the first adjusting plate 15 drives the trigger bar 2 to slide outward, and the sliding of the trigger bar 2 drives the rack 13 to slide through the first connecting rod 45. The sliding of the rack 13 drives the second sealing plate 36 in the heat dissipation mechanism on both sides to rotate, thereby making the first heat dissipation hole 40 on the second sealing plate 36 and the second heat dissipation hole 41 on the first sealing plate 35 staggered. The first heat dissipation hole 40 and the second heat dissipation hole 41 are sealed to prevent the accumulated water on the ground from flowing out from the first heat dissipation hole 40, the second heat dissipation hole 41 and the third heat dissipation hole 42. Flows into the inner side of the charging head housing 3, causing a short circuit; after people find the plug that has fallen on the ground and pick it up, under the action of the reset spring 25, the limit mechanism 21 will be reset, and at this time the limit mechanism 21 is located on the rear side of the block 16 on the first adjustment plate 15; when people use the plug to charge again, after the plug is inserted into the charging port on the electric vehicle, the inner end surface of the charging port on the electric vehicle will squeeze the trigger bar 2 so that the trigger bar 2 slides toward the inner side of the charging head housing 3, and the sliding of the trigger bar 2 drives the first adjustment plate 15 to slide, and the sliding of the first adjustment plate 15 drives the block 16 to slide. During the sliding process of the block 16, after contacting the limit block 32 in the limit mechanism 21, under the action of the upper inclined surface of the limit block 32, the limit block 32 will slide into the limit shell 30, and when the block 16 completely passes over the limit block 32, the limit block 32 slides out of the limit shell 30 again under the action of the limit spring 29 to limit the block 16, and during the sliding process of the block 16, the tightening spring 17 will be squeezed to apply force.

Claims

1. A waterproof plug for new energy vehicles, comprising a semicircular plug, a charging head housing, and a handle, wherein the front end of the charging head housing is provided with a semicircular plug, and the semicircular plug is provided with a socket; the rear end of the charging head housing is provided with a handle, and a wire hole is provided on the inner side of the handle; an electronic module is provided on the inner side of the charging head housing, one end of the wire is connected to the electronic module, and the other end of the wire passes through the wire hole on the handle and is connected to the charging pile; the characteristics are: A plurality of heat dissipation units are symmetrically installed on both sides of the charging head housing; The heat dissipation unit comprises a clamping ring, a first sealing plate and a second sealing plate, wherein the clamping ring is mounted on the side of the charging barrel housing, a disc is fixedly mounted on one end of the clamping ring located on the outside of the charging head housing, and the disc is provided with third heat dissipation holes evenly distributed in rows, and a plurality of baffles are evenly and obliquely mounted on the side of the disc to cooperate with the third heat dissipation holes on the disc, and each baffle corresponds to a row of third heat dissipation holes; a plurality of second heat dissipation holes are evenly opened on the first sealing plate in a circumferential direction, the first sealing plate is fixedly mounted on the inner side of the charging head housing, and the first sealing plate is aligned and matched with the clamping ring; a plurality of first heat dissipation holes are evenly opened on the second sealing plate in a circumferential direction, and the second sealing plate is rotatably mounted on the inner side of the charging head housing, and the first heat dissipation holes on the second sealing plate correspond one-to-one with the second heat dissipation holes on the first sealing plate; The trigger bar is slidably mounted on the front end of the charging head housing, and the trigger bar drives the second sealing plate in the heat dissipation unit to rotate through the transmission of the rack; a tightening spring is installed between the trigger bar and the charging head housing; the tightening spring has a pre-pressure; The charging head housing is also provided with a water-proof trigger mechanism for controlling whether the trigger bar can slide outwards; When charging, the trigger bar is pressed into the charging head housing at the longest length, and the second heat dissipation holes opened on the first sealing plate and the first heat dissipation holes opened on the second sealing plate are aligned one by one; When not charging, the trigger bar is popped out by the tightened spring, but is limited by the anti-seepage trigger mechanism to continue to pop out, and the second heat dissipation holes opened on the first sealing plate and the first heat dissipation holes opened on the second sealing plate are arranged in a staggered semicircle in a one-to-one correspondence; when the anti-seepage trigger mechanism releases the limit on the continued popping out of the trigger bar, the trigger bar extends out of the charging head shell to the longest length; the second heat dissipation holes opened on the first sealing plate and the first heat dissipation holes opened on the second sealing plate are in a one-to-one correspondence and are completely staggered to achieve sealing; A plurality of heat dissipation unit mounting holes are symmetrically opened on both sides of the charging head housing, and a nested ring groove is opened on the outer circumferential surface of the clamp ring, and the clamp ring is nested and installed in the heat dissipation unit mounting hole through the nested ring groove; one end of the fixing rod is fixedly installed on the disc installed on the clamp ring, and the other end of the fixing rod passes through the first sealing plate, and the second sealing plate is rotatably installed on the fixing rod; the other end of the fixing rod is fixedly installed with a counterweight block through a connecting plate; The second sealing plate has teeth on its outer circumferential surface, and two first connecting rods are symmetrically installed on one end of the trigger bar that penetrates into the inner side of the charging head shell. The two racks are slidably installed on the inner side of the charging head shell through two first guide supports, and the two racks are meshed with the teeth on the outer circumferential surface of the second sealing plate in the heat dissipation units on both sides; the two first connecting rods are fixedly connected to one end of the two racks respectively.

2. A new energy vehicle waterproof plug according to claim 1, characterized in that: A first adjustment plate is fixedly installed on one end of the trigger bar that penetrates into the inner side of the charging head shell, and a clamping block is provided on the end of the first adjustment plate away from the trigger bar. A spring fixing support is fixedly installed on the inner wall of the charging head shell, one end of the tightening spring is fixedly installed on the clamping block, and the other end of the tightening spring is fixedly installed on the spring fixing support.

3. A new energy vehicle waterproof plug according to claim 2, characterized in that: One end of the guide rod is fixedly mounted on the clamping block, and the other end of the guide rod is slidably matched with the spring fixed support, and the guide rod is located inside the tightening spring.

4. A new energy vehicle waterproof plug according to claim 2, characterized in that: The anti-water seepage trigger mechanism includes a sliding shell, a limiting mechanism, a second guide support, a connecting rod, a trigger block, and a reset spring, wherein two square openings are symmetrically opened on both side surfaces of the charging head shell, the sliding shell is fixedly installed on the wall surface of the charging head shell, the limiting mechanism is slidably installed on the sliding shell, and a reset spring is installed between the limiting mechanism and the two side surfaces of the sliding shell; the two trigger blocks are slidably installed on the square openings opened on the charging head shell, the two second connecting rods are respectively installed in the charging head shell through a second guide support, one end of the two second connecting rods is respectively fixedly installed on the two trigger blocks, and the other ends of the two second connecting rods are respectively squeezed and matched with the two sides of the limiting mechanism; The limiting mechanism includes a limiting spring, a limiting shell, and a limiting block, wherein one end of the limiting shell is an open end, and the other end of the limiting shell is slidably mounted on the sliding shell, one end of the limiting block has an inclined surface, and the other end of the limiting block is slidably mounted in the limiting shell, and a limiting spring is installed between one end of the limiting block located in the limiting shell and the inner end surface of the limiting shell; one end of the limiting block with the inclined surface cooperates with a clamping block on the first adjusting plate; One end of the return spring is fixedly mounted on the limit housing, and the other end of the return spring is fixedly mounted on the inner end surface of the sliding housing; When the person has not fallen to the ground, the side surface of the limiting block without the inclined surface contacts and cooperates with the clamping block on the first adjusting plate, and under the pre-pressure of the tightening spring, the limiting block and the clamping block are in close contact.

5. A new energy vehicle waterproof plug according to claim 4, characterized in that: Two first guide grooves are symmetrically opened on both sides of the sliding shell, and two first guide blocks are symmetrically installed on both sides of the unopened end of the limiting shell. The limiting shell is installed in the sliding shell through the sliding cooperation between the two first guide blocks and the two first guide grooves.

6. A new energy vehicle waterproof plug according to claim 4, characterized in that: Two second guide grooves are symmetrically opened on both side surfaces of the limiting shell, and two second guide blocks are symmetrically installed on both sides of the limiting block without an inclined surface. The limiting block is installed in the limiting shell through the sliding cooperation between the two second guide blocks and the two second guide grooves.

7. A new energy vehicle waterproof plug according to claim 4, characterized in that: The return spring is a compression spring and has preload; the limit spring is a compression spring.

8. A new energy vehicle waterproof plug according to claim 4, characterized in that: A sliding sealing mechanism is installed between the trigger bar and the charging head shell, and a sliding sealing mechanism is installed between the trigger block and the charging head shell.

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