Waterproof structure of automobile carbon tank

Abstract

The invention discloses an automobile carbon tank waterproof structure, and relates to the technical field of carbon tanks, the automobile carbon tank waterproof structure comprises a communication cover fixed on a carbon tank atmosphere interface, the outer end of the communication cover is rotatably connected with a bent pipe, the inner wall of the bent pipe is fixedly connected with a bottom plate, the bent pipe is internally provided with a limiting cylinder, and the interior of the limiting cylinder is slidably connected with a sealing plate; a spring a is arranged between the sealing plate and the limiting cylinder, the sealing mechanism comprises a sealing tire fixedly installed outside the sealing plate, an extrusion ring is fixedly connected between the bottom plate and the limiting cylinder, a cavity communicated with the sealing tire is formed in the sealing plate, and an air outlet communicated with the cavity is formed in the bottom of the sealing plate. Before the sealing plate is opened, the sealing tire is extruded through the extrusion ring, so that airflow is obliquely sprayed out from the air outlet, residual water at the joint of the sealing plate and the bottom plate is cleaned, and the situation that the adsorption capacity of activated carbon in the carbon tank is reduced due to the fact that the residual water is brought into the carbon tank when the airflow passes through the space between the bottom plate and the sealing plate is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of carbon canisters, and in particular to a waterproof structure of an automobile carbon canister. Background Art

[0002] The carbon canister is an automotive component used to reduce vehicle emissions and save fuel. Its three interfaces are connected to the atmosphere, the engine intake manifold and the fuel tank respectively. When the car is running, the gasoline in the fuel tank will evaporate to produce gasoline vapor. The carbon canister absorbs these gasoline vapors through the activated carbon inside to prevent them from being directly discharged into the atmosphere and causing pollution. When the engine is running, negative pressure will be generated in the intake manifold. This negative pressure will suck the gasoline vapor adsorbed in the carbon canister into the engine combustion chamber for combustion, thereby realizing the recovery and utilization of gasoline vapor.

[0003] A one-way valve is installed on the interface connecting the carbon canister to the atmosphere to prevent the gasoline vapor inside the carbon canister from leaking out and to prevent external impurities and water from entering the carbon canister to reduce the adsorption capacity of the activated carbon in the carbon canister, affecting the adsorption and desorption effects of the carbon canister on fuel vapor.

[0004] Although the one-way valve can isolate water in the interface connecting the carbon canister and the atmosphere to prevent water from entering the carbon canister, after water enters the interface, even if the water flows out of the interface, there will still be residual water attached to the connection between the one-way valve and the inner wall of the interface. When the outside air opens the one-way valve under negative pressure and enters the carbon canister, the residual water between the one-way valve and the interface will enter the carbon canister under the push of the airflow, causing the adsorption effect of the activated carbon inside the carbon canister to decrease after long-term use, thereby reducing the use effect of the carbon canister. In addition, since the carbon canister is installed on the car, the car is likely to transmit vibration to the carbon canister and the solenoid valve during driving, resulting in the rubber inside the one-way valve being difficult to fit tightly with the inner wall of the interface after long-term use, thereby reducing the waterproof effect. Summary of the invention

[0005] The purpose of the present invention is to propose a waterproof structure for an automobile carbon canister in order to solve the problem that residual water around the one-way valve enters the interior of the carbon canister with the air flow and the rubber of the one-way valve is difficult to fit tightly under the influence of long-term automobile vibration.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technology: a waterproof structure of an automobile carbon canister: comprising a connecting cover fixed on the carbon canister atmospheric interface, the outer end of the connecting cover is rotatably connected to a curved pipe, the inner wall of the curved pipe is fixedly connected to a bottom plate, a limiting cylinder is arranged inside the curved pipe, a sealing plate is slidably connected inside the limiting cylinder, a spring a is arranged between the sealing plate and the limiting cylinder, and further comprising:

[0007] A sealing mechanism, wherein the sealing mechanism comprises a sealing tire fixedly mounted on the outside of the sealing plate, an extrusion ring fixedly connected between the bottom plate and the limiting cylinder, a chamber connected to the sealing tire is arranged inside the sealing plate, an air outlet connected to the chamber is arranged at the bottom of the sealing plate and the air outlet is inclined toward the center line of the sealing plate, a cover plate for sealing the air outlet is rotatably connected to the bottom of the sealing plate, a torsion spring is arranged inside the cover plate, magnetic sheets are fixedly embedded on the opposite surfaces of the sealing plate and the cover plate, and an inflatable component is arranged between the sealing plate and the limiting cylinder;

[0008] When the carbon canister inhales air, the sealing plate drives the sealing tire to move upward under negative pressure, so that the extrusion ring is squeezed by the extrusion ring with a smaller inner diameter, and the air inside the sealing tire is discharged through the air outlet to the connection between the sealing plate and the bottom plate. When the sealing plate is reset, the sealing tire is inflated through the inflation assembly to increase the pressure between the sealing tire and the extrusion ring.

[0009] As a further description of the above-mentioned technology, a waterproof structure of an automobile carbon canister is provided: the inflation assembly includes a piston push rod rotatably connected to the inside of a limiting cylinder, and the sealing plate is fixedly connected to an air cylinder sleeved on the outside of the piston push rod, and the air cylinder is equipped with two one-way valves for air intake and air outlet respectively, and an air pipe is fixedly connected between the one-way valve for air outlet and the chamber of the sealing plate.

[0010] As a further description of the above-mentioned technology, a waterproof structure of an automobile carbon canister is as follows: the inner part of the curved pipe is rotatably connected to an impeller, and the sealing plate is fixedly connected to a connecting rod that is inserted into the impeller and slidably connected to the impeller.

[0011] As a further description of the above technology, a waterproof structure of an automobile carbon canister is provided: the inner wall of the curved pipe is fixedly connected with a water shield located below the sealing plate, a shield ring is sleeved on the top of the water shield, and a spring b is provided between the water shield and the shield ring.

[0012] As a further description of the above-mentioned technology, a waterproof structure of an automobile carbon canister also includes a discharge mechanism, which includes a connecting piece slidably connected to the bottom of the sealing plate, and both sides of the connecting piece are slidably connected with an insertion rod, the outer end of the insertion rod is fixedly connected to a support plate, the outer side of the support plate is slidably connected to a mounting plate, and the outer side of the mounting plate is fixedly connected to a water absorbent block.

[0013] As a further description of the above-mentioned technology, a waterproof structure of an automobile carbon canister is provided: a support spring is provided between the connecting piece and the insertion rod, a stop groove is provided on the inner wall of the curved pipe, the water absorption block is engaged with the stop groove, and a flow channel connected to the stop groove is provided on the inner wall of the curved pipe.

[0014] As a further description of the above technology, a waterproof structure of an automobile carbon canister is provided: the top of the mounting plate is rotatably connected to a roller, the inner wall of the curved pipe is fixedly connected to an inclined plate, and a return spring is provided between the support plate and the mounting plate.

[0015] As a further description of the above technology, a waterproof structure of an automobile carbon canister also includes: it also includes a collecting unit, the collecting unit includes a partition fixed on the inner wall of the curved pipe, a piston ring is slidably connected between the partition and the curved pipe, a pressure plate is fixedly connected to the bottom end of the mounting plate, a spring c is provided at the bottom of the piston ring, a drainage hole is opened on the curved pipe and a one-way valve is installed in the drainage hole.

[0016] As a further description of the above-mentioned technology, a waterproof structure of an automobile carbon canister is also provided: it also includes a dredging structure, the dredging structure includes an outer cylinder fixed inside a connecting cover and extending into the carbon canister, the interior of the outer cylinder is movably connected with a mounting cylinder frame, a pull rope is rotatably connected between the connecting rod and the mounting cylinder frame, an ejection spring is provided between the mounting cylinder frame and the inner wall of the connecting cover, a block is fixedly connected to the inner wall of the connecting cover, and a mesh cover is fixedly installed on the mounting cylinder frame.

[0017] As a further description of the above-mentioned technology, a waterproof structure of an automobile carbon canister is provided: an elastic paddle is fixedly connected to the outside of the mounting tube frame, and a limiting sleeve which is sleeved on the outside of the pull rope is fixedly connected to the bending part inside the bent pipe.

[0018] In summary, due to the use of the above-mentioned technology, the automotive carbon canister waterproof structure has the following beneficial effects:

[0019] When the car engine inhales air through the carbon canister, the sealing plate moves upward under the action of negative pressure. Before the sealing plate opens, the sealing tire is squeezed by the squeezing ring, so that the airflow is sprayed out obliquely from the air outlet to clean the residual water at the connection between the sealing plate and the bottom plate, so as to avoid the residual water being brought into the carbon canister when the airflow passes between the bottom plate and the sealing plate, resulting in a decrease in the adsorption capacity of the activated carbon in the carbon canister, thereby improving the waterproof effect of the carbon canister and extending the service life of the carbon canister;

[0020] During the process of resetting the sealing plate, the inside of the sealing tire is inflated through the inflation assembly, so that the sealing tire expands after resetting, increasing the pressure between the sealing tire and the extrusion ring, thereby making the sealing tire and the extrusion ring more tightly connected, improving the sealing between the two, and further improving the waterproof effect. In addition, the inflated sealing tire has stronger elasticity and deformation ability, which can reduce the impact of vibration on the sealing of the carbon canister during the driving of the car, and ensure the sealing effect of the carbon canister;

[0021] The vibration of the car will be transmitted to the sealing plate, causing different degrees of wear at different positions on the sealing tire due to uneven force. The impeller and the connecting rod can drive the sealing plate to deflect when the airflow passes through the curved pipe, so that the sealing tire can switch positions before each closure, ensuring the uniformity of the wear degree of each part of the sealing tire and effectively extending the service life of the sealing tire.

[0022] The stop groove on the inner wall of the elbow can stop the flow of water droplets on the inner wall of the elbow, preventing the airflow thrust from pushing the water on the inner wall of the elbow into the carbon canister. In addition, the water absorbing block absorbs the water in the stop groove during the rotation process, which can reduce the contact area between water and air, slow down the evaporation rate of water, and then prevent moisture from entering the carbon canister, thereby achieving the effect of protecting the carbon canister.

[0023] By moving the mounting plate downward, the stop groove can be used to squeeze each convex position of the water absorbing block, so as to squeeze out the water absorbed by the water absorbing block, thereby improving the repeated water absorbing capacity of the water absorbing block. At the same time, the downward pressure of the mounting plate can also discharge the squeezed water from the inside of the elbow through the pressure plate and the piston ring, thereby preventing the evaporation of water from increasing the humidity of the airflow and causing water vapor to enter the carbon canister;

[0024] Under the action of the magnetic force of the magnetic sheet, the airflow from the air outlet of the sealing plate can be ejected quickly, which increases the impact force of the ejected airflow, improves the effect and speed of the airflow cleaning the residual water, and shields the water droplets splashed when the airflow cleans the water through the retaining ring, so that the cleaned water can be collected and discharged through the flow channel, and discharged together with the water absorbed by the water absorbing block, thereby improving the waterproof effect;

[0025] By installing the cylinder holder, the activated carbon near the atmospheric interface of the carbon canister can be pushed and rotated to clear it every time the sealing plate is opened upwards, avoiding the activated carbon from getting wet and sticking, thereby improving the air permeability of the carbon canister and enhancing the use effect of the carbon canister. In addition, the elastic paddle can also vibrate the mesh cover when it is moved on the outer cylinder, preventing the activated carbon particles from embedding in the mesh holes of the mesh cover, thereby ensuring the air permeability of the mesh cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It shows a schematic diagram of the installation position provided in an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of a limiting sleeve provided according to an embodiment of the present invention is shown;

[0028] Figure 3 A schematic diagram of installing a cartridge rack according to an embodiment of the present invention is shown;

[0029] Figure 4 A local plan view of a bent pipe provided in an embodiment of the present invention is shown;

[0030] Figure 5The embodiment provided according to the present invention shows Figure 4 The enlarged schematic diagram at A in the middle;

[0031] Figure 6 The embodiment provided according to the present invention shows Figure 4 The enlarged schematic diagram of point B in the middle;

[0032] Figure 7 A partial three-dimensional schematic diagram of a bent pipe provided according to an embodiment of the present invention is shown;

[0033] Figure 8 A schematic diagram of a mounting plate provided according to an embodiment of the present invention is shown;

[0034] Fig. 9 A schematic cross-sectional view of a sealing plate provided according to an embodiment of the present invention is shown;

[0035] Fig.10 The embodiment provided according to the present invention shows Fig. 9 Enlarged schematic diagram at point C in the middle.

[0036] Legend:

[0037] 10. Connecting cover; 11. Bend pipe; 12. Bottom plate; 13. Spring a; 14. Sealing plate; 15. Limiting cylinder;

[0038] 20. Sealing mechanism; 21. Sealing tire; 22. Extrusion ring; 23. Cover plate; 24. Torsion spring; 25. Magnetic sheet; 26. Inflatable assembly; 261. Piston push rod; 262. Air delivery cylinder; 263. One-way valve; 264. Air delivery pipe; 27. Water shield; 28. Spring b; 29. ​​Retaining ring; 210. Flow channel; 211. Connecting rod; 212. Impeller;

[0039] 30. Discharge mechanism; 31. Connector; 32. Support spring; 33. Insert rod; 34. Support plate; 35. Mounting plate; 36. Water absorption block; 37. Roller; 38. Inclined plate; 39. Return spring; 310. Press plate;

[0040] 40. Collection unit; 41. Interlayer; 42. Piston ring; 43. Spring c; 44. One-way valve;

[0041] 50. Dredging structure; 51. Pull rope; 52. Installing cylinder rack; 53. Ejection spring; 54. Block; 55. Net cover; 56. Outer cylinder; 57. Elastic pick; 58. Limiting sleeve. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical embodiment of the present invention, a car carbon canister waterproof structure. Obviously, the described embodiment is only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figure 1-Figure 10 As shown, the present invention provides a car carbon canister waterproof structure: comprising a connecting cover 10 fixed on the carbon canister atmospheric interface, the outer end of the connecting cover 10 is rotatably connected to a curved pipe 11, the inner wall of the curved pipe 11 is fixedly connected to a bottom plate 12, a limiting cylinder 15 is arranged inside the curved pipe 11, a sealing plate 14 is slidably connected inside the limiting cylinder 15, the bottom of the sealing plate 14 is conical, and the function is to guide water to reduce the residual water between the bottom plate 12 and the sealing plate 14, a spring a13 is arranged between the sealing plate 14 and the limiting cylinder 15, and also includes:

[0044] The sealing mechanism 20 includes a sealing tire 21 fixedly mounted on the outside of the sealing plate 14, an extrusion ring 22 fixedly connected between the bottom plate 12 and the limiting cylinder 15, a chamber connected to the sealing tire 21 is arranged inside the sealing plate 14, an air outlet connected to the chamber is arranged at the bottom of the sealing plate 14, and the air outlet is inclined toward the center line of the sealing plate 14. When the air is discharged from the air outlet, the inclined airflow pushes the water between the bottom plate 12 and the sealing plate 14 toward the lower position of the sealing plate 14, so as to prevent the water from entering the inner part of the connection between the sealing plate 14 and the bottom plate 12 and affecting the seal between the bottom plate 12 and the sealing plate 14. The bottom of the sealing plate 14 is rotatably connected with a cover plate 23 for sealing the air outlet. A torsion spring 24 is arranged inside the cover plate 23 for automatically closing the cover plate 23 after opening. The opposite surfaces of the sealing plate 14 and the cover plate 23 are fixedly embedded with magnetic sheets 25. Under the magnetic force of the magnetic sheets 25, the cover plate 23 only closes the air outlet of the sealing plate 14. When the air pressure inside the chamber of the sealing plate 14 increases, the air pressure pushes the cover plate 23 open to allow the air inside the chamber to rush out, thereby increasing the thrust of the air, so that the rushing air can clean up the residual water between the bottom plate 12 and the sealing plate 14. An inflatable component 26 is arranged between the sealing plate 14 and the limiting cylinder 15.

[0045] When the carbon canister inhales air, the sealing plate 14 drives the sealing tire 21 to move upward under negative pressure, so that the extrusion ring 22 is squeezed by the extrusion ring 22 with a smaller inner diameter, and the air inside the sealing tire 21 is discharged to the connection between the sealing plate 14 and the bottom plate 12 through the air outlet. When the sealing plate 14 is reset, the sealing tire 21 is inflated by the inflation component 26, which increases the pressure between the sealing tire 21 and the extrusion ring 22, and improves the sealing between the sealing tire 21 and the extrusion ring 22, thereby further improving the waterproof effect. The inflated sealing tire 21 has stronger elasticity and deformation ability, which can reduce the impact of vibration on the sealing of the carbon canister during driving of the car.

[0046] Reference Figure 4 and Figure 7 The inflation assembly 26 includes a piston push rod 261 rotatably connected to the inside of the limiting cylinder 15, and a gas delivery cylinder 262 is fixedly connected to the sealing plate 14 and is sleeved on the outside of the piston push rod 261. Two one-way valves 263 for air intake and air outlet are installed on the gas delivery cylinder 262. The one-way valve 263 for air intake is installed on the top of the gas delivery cylinder 262, and the one-way valve 263 for air outlet is installed on the outside of the gas delivery cylinder 262. The one-way valve 263 for air outlet and the chamber of the sealing plate 14 An air pipe 264 is fixedly connected therebetween. When the piston push rod 261 moves downward relative to the air cylinder 262, the air pressure inside the air cylinder 262 decreases, and the outside air enters the air cylinder 262 through the one-way valve 263 located at the top of the air cylinder 262. When the piston push rod 261 moves upward relative to the air cylinder 262, the air pressure inside the air cylinder 262 increases, and the outside air enters the chamber of the sealing plate 14 through the one-way valve 263 and the air pipe 264 located outside the air cylinder 262.

[0047] The inner rotation of the curved pipe 11 is connected to an impeller 212, and when the airflow passes through the impeller 212, it will drive the impeller 212 to rotate. The sealing plate 14 is fixedly connected to a connecting rod 211 that is inserted into the impeller 212 and is slidably connected to the impeller 212. The connecting rod 211 is in the shape of a hexagonal prism. The rotation of the impeller 212 will drive the sealing plate 14 and the sealing tire 21 to rotate through the connecting rod 211, thereby switching the position of the sealing tire 21 and balancing the wear of the sealing tire 21.

[0048] Reference Figure 4 and Figure 5 The inner wall of the curved pipe 11 is fixedly connected with a water shield 27 located below the sealing plate 14, and a retaining ring 29 is sleeved on the top of the water shield 27. A spring b28 is provided between the water shield 27 and the retaining ring 29. The retaining ring 29 can block the splashing water, so that the blown water flows down along the inclined outer wall of the water shield 27, and then enters the stop groove of the curved pipe 11 through the flow channel 210, so as to prevent this part of the water from being pushed upward by the airflow.

[0049] Reference Figure 4 and Figure 7, and also includes a discharge mechanism 30, which includes a connecting member 31 slidably connected to the bottom of the sealing plate 14, and plug rods 33 are slidably connected to both sides of the connecting member 31. The outer end of the plug rod 33 is fixedly connected to a support plate 34, and the outer side of the support plate 34 is slidably connected to a mounting plate 35, and the outer side of the mounting plate 35 is fixedly connected to a water absorption block 36. The water absorption block 36 can scrape the ice and absorb water attached to the inner wall of the curved pipe 11 during rotation, thereby reducing the contact area between water and air, slowing down the evaporation of water, and reducing air humidity.

[0050] A support spring 32 is provided between the connecting piece 31 and the insertion rod 33, and the support spring 32 is always in a compressed state. A stop groove is provided on the inner wall of the bent pipe 11, and the water absorbing block 36 is engaged with the stop groove. The elastic force of the support spring 32 applies pressure to the water absorbing block 36 in the direction of the stop groove, so that the water absorbing block 36 can fit tightly with the stop groove, thereby improving the effect of the water absorbing block 36 in cleaning water and preventing the water absorbing block 36 from being worn out and detached from the stop groove. The stop groove is designed to be an inverted cone, which can not only block the flow of water, but also enable the water absorbing block 36 to move downward smoothly, and squeeze the water absorbing block 36 through the inner wall of the bent pipe 11 to squeeze out the water absorbed by the water absorbing block 36. A flow channel 210 connected to the stop groove is provided on the inner wall of the bent pipe 11, and the water cleaned between the bottom plate 12 and the sealing plate 14 can be guided into the stop groove through the flow channel 210 and discharged together with the water in the stop groove.

[0051] Reference Figure 4 , Figure 7 and Figure 8 A roller 37 is rotatably connected to the top of the mounting plate 35, an inclined plate 38 is fixedly connected to the inner wall of the curved pipe 11, and a return spring 39 is provided between the support plate 34 and the mounting plate 35. The function of the inclined plate 38 is to squeeze the roller 37, the mounting plate 35 and the water absorbing block 36 downward to squeeze out the water in the water absorbing block 36. At the same time, the roller 37 rolls on the inclined plate 38 to reduce the rotation resistance of the mounting plate 35.

[0052] Reference Figure 6 and Figure 7, and also includes a collecting unit 40, which includes a partition 41 fixed on the inner wall of the curved pipe 11, a piston ring 42 is slidably connected between the partition 41 and the curved pipe 11, a pressure plate 310 is fixedly connected to the bottom end of the mounting plate 35, a spring c43 is provided at the bottom of the piston ring 42, and an opening on the piston ring 42 is located below the inclined plate 38, so that the mounting plate 35 and the pressure plate 310 can close the opening of the piston ring 42 each time after moving downward, thereby driving the piston ring 42 to increase the pressure between the partition 41 and the curved pipe 11 after pressing downward, and discharge the water through pressure, a drainage hole is opened on the curved pipe 11 and a one-way valve 44 is installed in the drainage hole, and the one-way valve 44 is opened when it is subjected to force on one side of the curved pipe 11, so that the water in the curved pipe 11 and the partition 41 is discharged, and the external water will not enter the curved pipe 11 through the one-way valve 44.

[0053] Reference Figure 2 and Figure 3 , and also includes a dredging structure 50, which includes an outer cylinder 56 fixed inside the connecting cover 10 and extending into the carbon canister, the end of the outer cylinder 56 extending into the carbon canister is serrated, the inner part of the outer cylinder 56 is movably connected with a mounting cylinder frame 52, the outer part of the mounting cylinder frame 52 is provided with a notch twice the width of the block 54, a pull rope 51 is rotatably connected between the connecting rod 211 and the mounting cylinder frame 52, an ejection spring 53 is provided between the mounting cylinder frame 52 and the inner wall of the connecting cover 10, and the inner wall of the connecting cover 10 is fixedly connected with a block 54, A mesh cover 55 is fixedly installed on the installation tube frame 52. The mesh cover 55 is used to prevent the activated carbon inside the carbon canister from entering the installation tube frame 52. Inclined blades are arranged inside the installation tube frame 52 so that the air can push the blades to drive the installation tube frame 52 to rotate slowly when flowing. The block 54 supports the installation tube frame 52. When the notch of the installation tube frame 52 is rotated to be aligned with the block 54, the elastic force of the ejection spring 53 ejects the installation tube frame 52 to push the activated carbon in the carbon canister to prevent the activated carbon from sticking to each other and affecting the ventilation effect.

[0054] An elastic paddle 57 is fixedly connected to the outside of the mounting tube rack 52. When the mounting tube rack 52 rotates, the elastic paddle 57 slides on the serrations of the outer tube 56, so that the elastic paddle 57 continuously undergoes elastic deformation and collides with the serrations of the outer tube 56, thereby generating vibration to prevent the mesh holes of the mesh cover 55 from being blocked by activated carbon. A limiting sleeve 58 that is sleeved on the outside of the pull rope 51 is fixedly connected to the bending part inside the bent pipe 11, which is used to limit the position of the pull rope 51, so as to facilitate pulling the mounting tube rack 52 by the pull rope 51.

[0055] Working principle: After water is poured into the curved pipe 11, water that cannot flow out naturally will remain on the inner wall of the curved pipe 11 and the connection between the sealing plate 14 and the bottom plate 12. In the initial state, the sealing plate 14 is in close contact with the bottom plate 12 to seal the curved pipe 11 to prevent water from entering the carbon canister. The ejection spring 53, spring a13 and spring b28 are in a compressed state, and the block 54 supports and limits the mounting cylinder frame 52.

[0056] When the automobile engine inhales the atmosphere through the carbon canister, the sealing plate 14 moves upward under the action of negative pressure, the spring a13 is further compressed, the movement of the sealing plate 14 drives the sealing tire 21 to move, so that the sealing tire 21 is squeezed by the squeezing ring 22 with a smaller inner diameter, and the pressure in the chamber of the sealing tire 21 and the sealing plate 14 increases under the squeezing, so that the cover plate 23 is separated from the adsorption of the magnetic sheet 25 and is opened by the pressure, and the air in the sealing plate 14 is sprayed out obliquely from the air outlet, blowing away the water remaining at the connection between the bottom plate 12 and the sealing plate 14. After the air is discharged, the cover plate 23 is reset under the elastic force of the torsion spring 24 to close the air outlet;

[0057] The sealing plate 14 moves upward and drives the gas cylinder 262 to move, so that the piston push rod 261 goes deep into the gas cylinder 262. At this time, the gas cylinder 262 inhales air through the one-way valve 263 located at the top. When the automobile engine stops and inhales air through the carbon canister, the elastic force of the spring a13 drives the sealing plate 14 to reset, and the piston push rod 261 moves upward relative to the gas cylinder 262. The air inside the gas cylinder 262 inflates the sealing tire 21 through another one-way valve 263, the gas pipe 264 and the chamber of the sealing plate 14, so that the sealing tire 21 is reset together with the sealing plate 14, and then expands and squeezes between the squeezing ring 22 and the sealing plate 14, thereby improving the sealing performance.

[0058] When air passes through the curved pipe 11, it drives the impeller 212 to rotate, and drives the sealing plate 14 and the sealing tire 21 to rotate through the connecting rod 211, so as to switch the position of the sealing tire 21, so that the sealing tire 21 is evenly worn at various locations;

[0059] During the upward movement of the sealing plate 14, the elastic force of the spring b28 drives the baffle ring 29 to move upward, and the splashing water is shielded by the baffle ring 29, so that the blown water passes through the water shield 27 and the flow channel 210 and enters the stop groove of the elbow 11, thereby preventing the water from flowing back under the action of the airflow;

[0060] When the sealing plate 14 rotates, it drives the connecting piece 31 to rotate, and then drives the water absorbing block 36 to rotate through the insertion rod 33, the support plate 34 and the mounting plate 35, so as to scrape and absorb the water in the stop groove of the elbow 11. When the mounting plate 35 rotates, it drives the roller 37 to rotate together. When the roller 37 rotates to the bottom of the inclined plate 38, the roller 37 is squeezed by the inclined inclined plate 38 and moves downward, driving the mounting plate 35, the water absorbing block 36 and the pressing plate 310 to move downward. When the water absorbing block 36 moves downward, the protruding part of the water absorbing block 36 embedded in the stop groove will be squeezed with the inner wall of the elbow 11, so that the water absorbed by the water absorbing block 36 is squeezed out, and the squeezed water flows into the space between the elbow 11 and the partition 41, and flows into the bottom of the piston ring 42 through the hole on the piston ring 42. When the pressing plate 310 moves downward, it closes the hole of the piston ring 42 and presses the piston ring 42 downward, so that the piston ring 42 squeezes the water at its bottom and pushes the one-way valve 44 open to discharge it.

[0061] The airflow passing through the mounting tube frame 52 will drive it to rotate slowly. When the sealing plate 14 moves upward, the pull rope 51 is loosened. After the mounting tube frame 52 rotates until the outer notch is aligned with the block 54, the elastic force of the ejection spring 53 ejects the mounting tube frame 52 to push the activated carbon in the carbon canister to prevent the activated carbon near the connecting cover 10 from becoming wet and sticky, making it difficult for air to pass through. At the same time, the rotation of the mounting tube frame 52 will drive the elastic paddle 57 to rotate, so that the elastic paddle 57 is hit by the external serrations of the outer tube 56, driving the mesh cover 55 to vibrate to prevent the mesh holes from being blocked.

[0062] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes to the waterproof structure of an automobile carbon canister and its inventive concept according to the technology of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A car carbon canister waterproof structure, comprising a connecting cover (10) fixed on the carbon canister atmospheric interface, the outer end of the connecting cover (10) is rotatably connected to a curved pipe (11), the inner wall of the curved pipe (11) is fixedly connected to a bottom plate (12), a limiting cylinder (15) is arranged inside the curved pipe (11), a sealing plate (14) is slidably connected inside the limiting cylinder (15), a spring a (13) is arranged between the sealing plate (14) and the limiting cylinder (15), characterized in that: Also includes: A sealing mechanism (20), the sealing mechanism (20) comprising a sealing tire (21) fixedly mounted on the outside of a sealing plate (14), an extrusion ring (22) fixedly connected between the bottom plate (12) and the limiting cylinder (15), a chamber communicating with the sealing tire (21) being arranged inside the sealing plate (14), an air outlet communicating with the chamber being arranged at the bottom of the sealing plate (14) and the air outlet being inclined toward the center line of the sealing plate (14), a cover plate (23) for sealing the air outlet being rotatably connected at the bottom of the sealing plate (14), a torsion spring (24) being arranged inside the cover plate (23), magnetic sheets (25) being fixedly embedded in the opposing surfaces of the sealing plate (14) and the cover plate (23), and an inflatable component (26) being arranged between the sealing plate (14) and the limiting cylinder (15); When the carbon canister inhales air, the sealing plate (14) drives the sealing tire (21) to move upward under negative pressure, so that the extrusion ring (22) is squeezed by the extrusion ring (22) with a smaller inner diameter, and the air inside the sealing tire (21) is discharged through the air outlet to the connection between the sealing plate (14) and the bottom plate (12). When the sealing plate (14) is reset, the sealing tire (21) is inflated through the inflation component (26), thereby increasing the pressure between the sealing tire (21) and the extrusion ring (22).

2. The automotive carbon canister waterproof structure according to claim 1, characterized in that: The inflation assembly (26) comprises a piston push rod (261) rotatably connected to the inside of the limiting cylinder (15); the sealing plate (14) is fixedly connected to a gas cylinder (262) sleeved on the outside of the piston push rod (261); the gas cylinder (262) is equipped with two one-way valves (263) for air intake and air outlet, respectively; and an air pipe (264) is fixedly connected between the one-way valve (263) for air outlet and the chamber of the sealing plate (14).

3. The automotive carbon canister waterproof structure according to claim 2, characterized in that: The interior of the curved pipe (11) is rotatably connected to an impeller (212), and the sealing plate (14) is fixedly connected to a connecting rod (211) which is inserted into the impeller (212) and slidably connected to the impeller (212).

4. The automotive carbon canister waterproof structure according to claim 3, characterized in that: The inner wall of the curved pipe (11) is fixedly connected with a water shield (27) located below the sealing plate (14); a shield ring (29) is sleeved on the top of the water shield (27); and a spring b (28) is provided between the water shield (27) and the shield ring (29).

5. The automotive carbon canister waterproof structure according to claim 3, characterized in that: The invention also comprises a discharge mechanism (30), wherein the discharge mechanism (30) comprises a connecting member (31) slidably connected to the bottom of the sealing plate (14), an insert rod (33) is slidably connected to both sides of the connecting member (31), an outer end of the insert rod (33) is fixedly connected to a support plate (34), an outer side of the support plate (34) is slidably connected to a mounting plate (35), and an outer side of the mounting plate (35) is fixedly connected to a water absorbent block (36).

6. The automotive carbon canister waterproof structure according to claim 5, characterized in that: A support spring (32) is provided between the connecting piece (31) and the insert rod (33); a stop groove is provided on the inner wall of the curved pipe (11); the water absorbing block (36) is engaged with the stop groove; and a flow channel (210) communicating with the stop groove is provided on the inner wall of the curved pipe (11).

7. The automotive carbon canister waterproof structure according to claim 5, characterized in that: The top of the mounting plate (35) is rotatably connected to a roller (37), the inner wall of the curved pipe (11) is fixedly connected to an inclined plate (38), and a return spring (39) is provided between the support plate (34) and the mounting plate (35).

8. The automotive carbon canister waterproof structure according to claim 7, characterized in that: The invention also comprises a collecting unit (40), wherein the collecting unit (40) comprises a partition (41) fixed on the inner wall of the curved pipe (11), a piston ring (42) being slidably connected between the partition (41) and the curved pipe (11), a pressure plate (310) being fixedly connected to the bottom end of the mounting plate (35), a spring c (43) being provided at the bottom of the piston ring (42), and a drainage hole being provided on the curved pipe (11) and a one-way valve (44) being installed in the drainage hole.

9. The automotive carbon canister waterproof structure according to claim 3, characterized in that: The invention also comprises a dredging structure (50), wherein the dredging structure (50) comprises an outer cylinder (56) fixed inside the connecting cover (10) and extending into the carbon canister, wherein the inner part of the outer cylinder (56) is movably connected to a mounting cylinder frame (52), a pull rope (51) is rotatably connected between the connecting rod (211) and the mounting cylinder frame (52), an ejection spring (53) is provided between the mounting cylinder frame (52) and the inner wall of the connecting cover (10), a clamping block (54) is fixedly connected to the inner wall of the connecting cover (10), and a mesh cover (55) is fixedly installed on the mounting cylinder frame (52).

10. The automotive carbon canister waterproof structure according to claim 9, characterized in that: The outside of the mounting cylinder frame (52) is fixedly connected with an elastic pick (57), and the bending part inside the curved tube (11) is fixedly connected with a limiting sleeve (58) sleeved on the outside of the pull rope (51).

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