Urea filling pipe and vehicle

Abstract

This invention discloses a urea filling pipe and a vehicle. The urea filling pipe includes a pipe body and a filter element. The pipe body has a fluid flow cavity and a filling port communicating with the fluid flow cavity. The filter element has a first state and a second state. In the first state, the circumferential edge of the filter element mates with the circumferential wall of the fluid flow cavity to filter the fluid flowing through the fluid flow cavity. In the second state, at least a portion of the outer periphery of the filter element is separated from the inner circumferential wall of the fluid flow cavity. The filter element is configured to switch between the first state and the second state. This invention can reduce the possibility of impurities entering the urea tank and thus contaminating it, and has little impact on the smoothness of the filling process.

Description

Technical Field

[0001] This invention relates to the field of vehicle parts technology, and in particular to a urea filling pipe and a vehicle. Background Technology

[0002] With the upgrading of regulations, urea systems have begun to be widely used in diesel vehicles. The main components of a urea system are: urea filling structure (filling pipe), storage structure (urea tank), control and injection structure (control unit and pump body), delivery structure (delivery pipeline), and injection execution structure (injector). Users fill the urea solution through the urea filling pipe and store it in the urea tank for vehicle use.

[0003] Currently, there are two methods for urea refueling: nozzle refueling and manual refueling. Because the consumption rate of urea solution is much lower than that of diesel fuel, and the market penetration rate of urea refueling machines is relatively low, manual refueling is far more common than nozzle refueling. Manual refueling of urea solution easily introduces impurities such as dust and sand, which is particularly noticeable in Northwest my country (Xinjiang, Inner Mongolia, etc.). Urea solution is often sold with a free plastic tube, which is frequently used when manually refueling the vehicle's urea system. Impurities that accumulate on the plastic tube during repeated use and storage can easily enter the urea tank, contaminating the urea solution and damaging other components. Summary of the Invention

[0004] In view of this, the present invention aims to provide a urea filling tube that can reduce the possibility of impurities entering the urea tank and thus contaminating the urea tank, and has little impact on the smoothness of the filling process of the filling gun.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0006] A urea dispensing tube, comprising:

[0007] A pipe body having a fluid flow cavity and a filling port communicating with the fluid flow cavity;

[0008] A filter element having a first state and a second state, wherein in the first state, the circumferential edge of the filter element engages with the circumferential wall of the fluid flow cavity to filter fluid flowing through the fluid flow cavity; and in the second state, at least a portion of the outer periphery of the filter element is separated from the inner circumferential wall of the fluid flow cavity, and the filter element is configured to switch between the first state and the second state.

[0009] In some embodiments, the urea filling tube further includes a housing disposed on the tube body, the housing having a receiving cavity; the filter element is configured to move between the fluid flow cavity and the receiving cavity, wherein in a first state the filter element is located within the fluid flow cavity; and in a second state the filter element is at least partially located within the receiving cavity.

[0010] In some embodiments, the urea filling tube further includes a first rope and a first elastic element, one end of the first rope and one end of the first elastic element being connected to the filter element, the first rope being used to pull the filter element, and the other end of the first elastic element being connected to the housing, the first elastic element being used to provide a restoring force opposite to the pulling direction of the first rope.

[0011] In some embodiments, the urea injection tube further includes a rope fixing assembly connected to the other end of the first rope;

[0012] The rope fixing assembly is used to pull the first rope a first distance to switch the filter element from the first state and maintain it in the second state;

[0013] The rope fixing assembly is also used to pull the first rope a second distance to switch the filter from the second state and maintain it in the first state.

[0014] In some embodiments, the first distance is less than the second distance.

[0015] In some embodiments, the urea filling tube further includes a first detection element and an execution control component connected by communication. The first detection element is used to detect whether the filling port is in a closed state. The execution control component is used to control the rope fixing component to perform at least one preset action when the filling port is in a closed state. The preset action is to sequentially pull the first rope to move a first distance and then move a second distance.

[0016] In some embodiments, the rope securing assembly includes:

[0017] The fastener is disposed on the tube body;

[0018] A slider is connected to the other end of the first rope, and the slider is slidably disposed on the fixing member in a set direction;

[0019] The slider is used to pull the first rope a first distance to switch the filter element from the first state and maintain it in the second state;

[0020] The slider is also used to pull the first rope a second distance to switch the filter from the second state and maintain it in the first state.

[0021] In some embodiments, the rope fixing assembly further includes a second elastic element, the two ends of which are connected to the fixing element and the slider, respectively, and the second elastic element is used to provide a restoring force opposite to the pulling direction of the first rope.

[0022] In some embodiments, the urea injection tube further includes a drive assembly for driving the slider to slide along the predetermined direction away from the first rope.

[0023] In some embodiments, the drive assembly includes a second rope, wherein one end of the second rope is connected to the slider, the second rope is used to pull the slider along the predetermined direction and on a side away from the first rope, and the other end of the second rope extends outside the urea injection pipe; and / or,

[0024] The drive assembly includes a cooperating energized coil and a magnetic component, one of which is disposed on the slider and the other of which is disposed on the fixing member. The energized coil and the magnetic component are magnetically coupled to apply a driving force to the slider in the predetermined direction and away from the first rope.

[0025] In some embodiments, the filter element includes a flexible skeleton and a filter portion, the circumferential edge of the filter portion being connected to the flexible skeleton. When the filter element is located within the receiving cavity, the flexible skeleton is in a folded state; when the filter element is located within the fluid flow cavity, the flexible skeleton is in an unfolded state and the circumferential edge of the flexible skeleton is in a sealing fit with the circumferential sidewall of the fluid flow cavity.

[0026] In some embodiments, the urea filling tube further includes a second detection element, which is used to detect whether the filling method of the urea filling tube is filling with a filling gun. The filter element is configured to switch to the second state when the filling method of the urea filling tube is filling with a filling gun, and to switch to the first state after the filling is completed.

[0027] According to an embodiment of the present invention, a urea filling tube is provided with a filter element that can be switched between a first state and a second state. In the first state, the circumferential edge of the filter element engages with the circumferential wall of the fluid flow cavity to filter the fluid flowing through the fluid flow cavity. In the second state, at least a portion of the outer periphery of the filter element is separated from the inner circumferential wall of the fluid flow cavity. This allows the filter element to be switched to the first state when manually filling urea solution, so that the filter element can filter the urea solution and reduce the possibility of impurities entering the urea tank and contaminating it. When filling urea solution with a filling gun, the filter element can be switched to the second state so that the filter element does not affect the smoothness of filling with the filling gun.

[0028] Another object of the present invention is to provide a vehicle including a urea injection pipe according to an embodiment of the present invention.

[0029] Compared to existing technologies, the advantages of the vehicle described in this invention are the same as those of the urea filling pipe in the embodiments of this invention, and will not be repeated here. Attached Figure Description

[0030] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0031] Figure 1 This is a schematic diagram of the first structure of the urea injection tube according to an embodiment of the present invention.

[0032] Figure 2 This is a schematic diagram of the second structure of the urea injection tube according to an embodiment of the present invention.

[0033] Figure 3 This is a partial cross-sectional view of the urea filling pipe according to an embodiment of the present invention, wherein the filter element is shown to be in a second state.

[0034] Figure 4 This is a partial cross-sectional view of the urea injection pipe according to an embodiment of the present invention, wherein the filter element is shown to be in a first state.

[0035] Figure 5 This is a schematic diagram of the rope fixing assembly in the urea injection pipe according to an embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1000 urea injection tube;

[0038] tube body 10;

[0039] Filling port 101; fixing part 1011; fluid flow chamber 102; drain port 103;

[0040] Filter element 20;

[0041] Flexible frame 201; Filter section 202;

[0042] Casing 30

[0043] Receiving cavity 301;

[0044] First rope 40; First elastic element 50;

[0045] Rope securing assembly 60;

[0046] Fixture 601; slider 602; first slider 6021; second slider 6022;

[0047] Limiting component 603; guide groove 604; first guide groove 6041; second guide groove 6042;

[0048] Third guide groove 6043; Fourth guide groove 6044; Fifth guide groove 6045; Second elastic element 605;

[0049] Guide structure 70; second rope 801; energized coil 802; magnetic component 803;

[0050] Ventilation tube 90; Fixed structure 100. Detailed Implementation

[0051] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0052] The following will refer to Figures 1-5 The present invention will be described in detail with reference to the embodiments.

[0053] like Figures 1-5 As shown, the urea filling tube 1000 according to an embodiment of the present invention includes a tube body 10 and a filter element 20. The tube body 10 has a fluid flow chamber 102 and a filling port 101 communicating with the fluid flow chamber 102; the filter element 20 has a first state and a second state. In the first state, as shown... Figure 4 As shown, the circumferential edge of the filter element 20 mates with the circumferential wall of the fluid flow cavity 102, so that the filter element 20 filters the fluid flowing through the fluid flow cavity 102; in the second state, as... Figure 3 As shown, at least a portion of the outer periphery of the filter element 20 is separated from the inner peripheral wall of the fluid flow cavity 102, and the filter element 20 is configured to switch between a first state and a second state.

[0054] Specifically, the pipe body 10 has a fluid flow chamber 102 and a filling port 101 communicating with the fluid flow chamber 102; it is understood that the pipe body 10 also has a drain port 103, which is connected to the inlet of the urea tank. For example, a quick-connect fitting is provided at the drain port 103 to facilitate quick connection with the inlet of the urea tank. When adding urea solution, the urea solution is injected into the fluid flow chamber 102 from the filling port 101, and then flows out from the drain port 103 into the urea tank.

[0055] like Figure 3 and Figure 4 As shown, the filter element 20 has a first state and a second state. In the first state, the circumferential edge of the filter element 20 engages with the circumferential wall of the fluid flow cavity 102 to filter the fluid flowing through the fluid flow cavity 102. In the second state, at least a portion of the outer periphery of the filter element 20 is separated from the inner circumferential wall of the fluid flow cavity 102 so that the filter element 20 does not filter the fluid flowing through the fluid flow cavity 102 or only a portion of the filter element 20 filters the fluid flowing through the fluid flow cavity 102. The filter element 20 is configured to switch between the first state and the second state.

[0056] It should be noted that when the urea solution is added manually, the filter element 20 can be in the first state. At this time, the filter element 20 can filter the fluid flowing through the fluid flow chamber 102 to reduce the possibility of impurities entering the urea tank and contaminating it. When the urea solution is added by a filling gun, the filter element 20 can be in the second state. At this time, at least a portion of the outer periphery of the filter element 20 is separated from the inner peripheral wall of the fluid flow chamber 102. In this case, the filter element 20 does not obstruct the flow of fluid, or its obstruction effect on the flow of fluid is small, which helps to ensure the smoothness of the filling process by the filling gun.

[0057] More specifically, for example, the filter element 20 can rotate in the fluid flow chamber 102. When the filter surface of the filter element 20 is parallel to the flow direction of the fluid, the filter element 20 reaches the second state. At this time, the filter element 20 has little impact on the smoothness of the fluid flow. When the filter surface of the filter element 20 is perpendicular to the flow direction of the fluid, the filter element 20 reaches the first state. At this time, the filter element 20 can filter the fluid to reduce the possibility of impurities entering the urea tank.

[0058] More specifically, for example, the urea filling pipe 1000 also includes a housing 30, which has a receiving cavity 301. The filter element 20 can move between the fluid flow cavity 102 and the receiving cavity 301. When the filter element 20 leaves at least partially in the fluid flow cavity 102, the filter element 20 reaches a second state, at which point the filter element 20 has little impact on the smoothness of fluid flow. When the filter element 20 moves into the fluid flow cavity 102, the filter element 20 reaches a first state, at which point the filter element 20 can filter the fluid to reduce the possibility of impurities entering the urea tank.

[0059] According to an embodiment of the present invention, the urea filling tube 1000 is provided with a filter element 20 that can be switched between a first state and a second state. In the first state, the circumferential edge of the filter element 20 engages with the circumferential wall of the fluid flow cavity 102, so that the filter element 20 filters the fluid flowing through the fluid flow cavity 102. In the second state, at least a portion of the outer periphery of the filter element 20 is separated from the inner peripheral wall of the fluid flow cavity 102, so that when manually adding urea solution, the filter element 20 can be switched to the first state, so that the filter element 20 can filter the urea solution, thereby reducing the possibility of impurities entering the urea tank and contaminating the urea tank. When adding urea solution with the filling gun, the filter element 20 can be switched to the second state so that the filter element 20 does not affect the smoothness of the filling gun.

[0060] In some embodiments, such as Figure 1 and Figure 2 As shown, the urea filling pipe 1000 may also include a vent pipe 90. One end of the vent pipe 90 is connected to the exhaust port of the urea tank, and the other end of the vent pipe 90 can extend to the filling port 101 so as to discharge the gas in the urea tank during the filling process, balance the pressure in the urea tank, and ensure the smoothness of filling.

[0061] In some embodiments, the urea filling pipe 1000 can also be fixed to the fixing structure 100 to fix itself to the vehicle frame.

[0062] In some embodiments, the filling port 101 of the pipe body 10 may be located at the vehicle's refueling port.

[0063] According to some embodiments of the present invention, such as Figure 3 and Figure 4As shown, the urea filling pipe 1000 also includes a housing 30 disposed on the pipe body 10, and the housing 30 has a receiving cavity 301; the filter element 20 is configured to move between the fluid flow chamber 102 and the receiving cavity 301. In a first state, the filter element 20 is located within the fluid flow chamber 102; in a second state, the filter element 20 is at least partially located within the receiving cavity 301. It is understood that by providing the receiving cavity 301, the filter element 20 is configured to move between the fluid flow chamber 102 and the receiving cavity 301. On the one hand, the filter element 20 has less impact on the smoothness of fluid flow in the second state; on the other hand, when filling with a filling gun, the filter element 20 can completely leave the fluid flow chamber 102, so that the fluid will not wash over the surface of the filter element 20, reducing the possibility that impurities on the surface of the filter element 20 will be washed down and mixed in the fluid.

[0064] In some embodiments, the housing 30 includes a housing body and a cover, the cover covering an opening on the housing body, for example, the cover being threadedly connected to the opening, the filter element 20 being fixed on the cover and being removable from the opening, so that after the filter element 20 has been used for a period of time, it can be removed for cleaning and replacement, ensuring the filtration effect of the filter element 20.

[0065] According to some embodiments of the present invention, such as Figure 3 and Figure 4 As shown, the urea filling pipe 1000 also includes a first rope 40 and a first elastic element 50. One end of the first rope 40 and one end of the first elastic element 50 are respectively connected to the filter element 20. The first rope 40 is used to pull the filter element 20. The other end of the first elastic element 50 is connected to the housing 30. The first elastic element 50 is used to provide a restoring force opposite to the pulling direction of the first rope 40. Understandably, for example, the first rope 40 and the first elastic element 50 can be located on one side of the filter element 20 in the radial direction. In this case, when the first rope 40 is pulled to move the filter element 20, the first rope 40 can pull the filter element 20 back into the housing 30. When the first rope 40 is not pulled, the filter element 20 moves into the fluid flow cavity 102 under the restoring force of the first elastic element 50. Alternatively, the first rope 40 and the first elastic element 50 can also be located on both sides of the filter element 20 in the radial direction. When the first rope 40 is pulled to move the filter element 20, the filter element 20 can enter the fluid flow cavity 102. When the first rope 40 is not pulled, the filter element 20 moves into the receiving cavity 301 under the restoring force of the first elastic element 50. Thus, by pulling the first rope 40, the filter element 20 can be switched between a first state and a second state.

[0066] According to some embodiments of the present invention, such as Figure 5As shown, the urea filling pipe 1000 also includes a rope fixing assembly 60, which is connected to the other end of the first rope 40. The rope fixing assembly 60 is used to pull the first rope 40 a first distance to switch the filter element 20 from a first state and maintain it in a second state. The rope fixing assembly 60 is also used to pull the first rope 40 a second distance to switch the filter element 20 from the second state and maintain it in the first state. In this way, for example, when pulled by hand, the filter element 20 can be kept in the second state without the user needing to continuously apply a pulling force to the first rope 40, making it convenient for the user to operate. The first distance and the second distance can be the same or different. By pulling the second rope 801, the rope fixing assembly 60 can be switched between the first state and the second state, making the operation simpler and more convenient.

[0067] According to some embodiments of the present invention, the first distance is less than the second distance. It should be noted that the filter element 20 is in the first state. If the first rope 40 is pulled a first distance by the rope fixing assembly 60, the rope fixing assembly 60 will cooperate with the first elastic element 50 to switch the filter element 20 and maintain it in the second state; since the first distance is less than the second distance, if the first rope 40 is pulled a second distance by the rope fixing assembly 60, the rope fixing assembly 60 will also cooperate with the first elastic element 50 to switch the filter element 20 and maintain it in the second state.

[0068] The filter element 20 is in the second state. If the first rope 40 is pulled a second distance by the rope fixing assembly 60, the rope fixing assembly 60 will cooperate with the first elastic element 50 to switch the filter element 20 and keep it in the first state. If the first rope 40 is pulled a first distance by the rope fixing assembly 60, since the first distance is less than the second distance, the first rope 40 needs to be pulled a second distance before the filter element 20 switches to the first state. Therefore, at this time, the rope fixing assembly 60 will cooperate with the first elastic element 50 to make the filter element 20 return to the second state after moving. In other words, by making the first distance less than the second distance, the filter element 20 can be switched and kept in the first state regardless of whether it is in the first state or the second state by pulling the first rope 40 sequentially by moving the first distance and then the second distance. This ensures that the filter element 20 is in a state where it can filter the fluid, further reducing the possibility of the fluid entering the urea tank directly without filtration.

[0069] According to some embodiments of the present invention, the urea filling tube 1000 further includes a first detection element and an execution control component connected by communication. The first detection element is used to detect whether the filling port 101 is in a closed state. The execution control component is used to control the rope fixing component 60 to perform a preset action at least once when the filling port 101 is in a closed state. The preset action is to sequentially pull the first rope 40 to move a first distance and then move a second distance. That is, by setting the execution control component, the execution control component can perform the preset action so that the filter element 20 can be in a first state before the next filling, reducing the possibility that the filter element 20 is not in the first state during manual filling. Moreover, the execution control component can achieve automatic execution, improving the convenience of user use. More specifically, for example, the first detection element can be a light intensity detector. When the filling port 101 is in a closed state, the light intensity at the filling port 101 is weak. When the filling port 101 is in an open state, the light intensity at the filling port 101 is strong. Thus, it can be determined whether the filling port 101 is in a closed state. However, it is not limited to this, and the first detection element can be other detection components.

[0070] In some embodiments, the execution control component is connected to the vehicle control system via CAN communication to improve integration and make control more convenient.

[0071] According to some embodiments of the present invention, such as Figure 5 As shown, the rope fixing assembly 60 includes a fixing member 601 and a slider 602. The fixing member 601 is disposed on the tube body 10; the slider 602 is connected to the other end of the first rope 40, and the slider 602 is slidably disposed on the fixing member 601 along a set direction; the slider 602 is used to pull the first rope 40 a first distance to switch the filter element 20 from a first state and maintain it in a second state; the slider 602 is also used to pull the first rope 40 a second distance to switch the filter element 20 from the second state and maintain it in the first state. Thus, a driving assembly can be provided on the fixing member 601 to drive the slider 602 to switch the filter element 20 between the first state and the second state.

[0072] According to some embodiments of the present invention, such as Figure 5As shown, the rope fixing assembly 60 also includes a limiting member 603. The slider 602 is provided with a guide groove 604, which includes a first guide groove 6041, a second guide groove 6042, a third guide groove 6043, and a fourth guide groove 6044. The first guide groove 6041, second guide groove 6042, third guide groove 6043, and fourth guide groove 6044 are sequentially connected end-to-end. The angled opening formed by the extension directions of the first guide groove 6041 and the fourth guide groove 6044, as well as the angled opening formed by the extension directions of the second guide groove 6042 and the third guide groove 6043, all face the side of the slider 602 connected to the first rope 40. The height of the bottom of the first end of the first guide groove 6041 is less than the height of the bottom of the bottom of the fourth guide groove 6044, and the height of the bottom of the first end of the second guide groove 6042 is less than the height of the bottom of the second guide groove 6042. The height of the bottom of the first guide groove 6041 is less than the height of the bottom of the second guide groove 6042, and the height of the bottom of the first guide groove 6044 is less than the height of the bottom of the third guide groove 6043. The extension length of the first guide groove 6041 is a first distance, and the extension length of the third guide groove 6043 is a second distance. Here, the extension lengths of the first guide groove 6041 and the third guide groove 6043 are extension lengths along a set direction. One end of the limiting member 603 is movably connected to the fixing member 601, and the other end of the limiting member 603 can move along the guide groove 604 under the action of the tension of the first rope 40 and the restoring force of the first elastic member 50. Specifically, the limiting member 603 can be a rod, and one end of the rod has a hook.

[0073] In this configuration, when the filter element 20 is in the second state, the other end of the limiting member 603 is held at the beginning of the first guide groove 6041 by the action of the first elastic member 50; when the filter element 20 is in the first state, the other end of the limiting member 603 is held at the beginning of the third guide groove 6043 by the action of the first elastic member 50. It should be noted that when the filter element 20 is in the second state and the other end of the limiting member 603 is located in the first guide groove 6041, during the process of the slider 602 moving and pulling the first rope 40 a first distance, the other end of the limiting member 603 will move along the first guide groove 6041. When the slider 602 stops pulling the first rope 40, the slider 602 moves in the opposite direction, causing the other end of the limiting member 603 to move along the second guide groove 6043 and be fixed in the beginning of the third guide groove 6043. At this time, the filter element 20 switches and remains in the first state.

[0074] When the filter element 20 is in the first state and the other end of the limiting member 603 is located at the beginning of the third guide groove 6043, during the process of the slider 602 moving and pulling the first rope 40 a second distance, the other end of the limiting member 603 will leave the third guide groove 6043 and enter the fourth guide groove 6044. When the pulling of the first rope 40 stops, the slider 602 moves in the opposite direction, causing the other end of the limiting member 603 to move along the fourth guide groove 6044 and return to the first guide groove 6041. The filter element 20 switches and remains in the second state. Thus, the present invention can achieve rapid and efficient switching of the filter element 20 between the first and second states by pulling the first rope 40.

[0075] In some embodiments, such as Figure 5 As shown, the guide groove 604 also includes a fifth guide groove 6045, which extends along a set direction. One end of the fifth guide groove 6045 along the set direction is connected to the beginning of the first guide groove 6041 and the end of the fourth guide groove 6044. At this time, the extension length of the fifth guide groove 6045 and the first guide groove 6041 in the set direction is a first distance. By setting the fifth guide groove 6045, the movable range of the slider 602 can be increased, and it can be set according to the actual situation and requirements.

[0076] In some embodiments, the height of the bottom of the first guide groove 6041, the second guide groove 6042, the third guide groove 6043, and the fourth guide groove 6044 can be the same or different.

[0077] In some embodiments, such as Figure 5 As shown, slider 602 may include a first slider 6021 and a second slider 6022. The first slider 6021 and the second slider 6022 have a mutually cooperating structure so that the first slider 6021 and the second slider 6022 can move synchronously.

[0078] In some embodiments, such as Figure 5 As shown, the fixing member 601 and / or the slider 602 are provided with mutually cooperating guide structures 70 to guide the movement of the slider 602 and prevent the slider 602 from undergoing unnecessary large-scale deviations during movement.

[0079] According to some embodiments of the present invention, such as Figure 5As shown, the rope fixing assembly 60 also includes a second elastic element 605. The two ends of the second elastic element 605 are connected to the fixing element 601 and the slider 602, respectively. The second elastic element 605 provides a restoring force opposite to the pulling direction of the first rope 40. By providing the second elastic element 605, the second elastic element 605 and the first elastic element 50 together provide a restoring force opposite to the pulling direction of the first rope 40. When the driving force on the first rope 40 disappears, the filter element 20 can achieve a faster state switching. Furthermore, if either the first elastic element 50 or the second elastic element 605 fails, the urea filling tube 1000 of the present invention can still continue to be used normally, which helps to ensure its service life.

[0080] More specifically, for example, the second elastic element 605 and the limiting element 603 are located on the same side of the slider 602 along the set direction; or, the second elastic element 605 and the limiting element 603 are respectively disposed on both sides of the slider 602 along the set direction; or, two second elastic elements 605 are provided, and the two second elastic elements 605 are respectively disposed on both sides of the slider 602 along the set direction. In this case, the two second elastic elements 605 can have an initial deformation amount to reduce the possibility of the slider 602 swaying significantly; or, multiple second elastic elements 605 can also be provided as needed.

[0081] According to some embodiments of the present invention, the urea filling tube 1000 further includes a driving assembly for driving the slider 602 to slide in a predetermined direction away from the first rope 40. More specifically, for example, as Figure 5 As shown, the drive assembly includes a second rope 801, one end of which is connected to the slider 602. The second rope 801 is used to pull the slider 602 along a set direction away from the first rope 40. The other end of the second rope 801 extends outside the urea filling pipe 1000, for example, to the filling port 101. A fixing part 1011 can be provided at the filling port 101. The second rope 801 passes through the fixing part 1011 and is not easily separated from the fixing part 1011. The user can manually pull the second rope 801 to drive the slider 602 to move.

[0082] For example, such as Figure 5As shown, the drive assembly may further include a cooperating energized coil 802 and a magnetic element 803. One of the energized coil 802 and the magnetic element 803 is disposed on the slider 602, and the other is disposed on the fixing member 601. The energized coil 802 and the magnetic element 803 are magnetically coupled to apply a driving force to the slider 602 in a predetermined direction away from the first rope 40. That is, the movement of the slider 602 can be controlled manually or electrically, allowing the user to control it themselves in special circumstances, ensuring that user needs are met in various environments. The energized coil 802 can be connected to an execution control assembly, which controls the energized coil 802. More specifically, the magnetic element 803 can be a magnet, an iron block, or other ferromagnetic material, or it can be a second energized coil.

[0083] In embodiments where the drive assembly includes a cooperating energized coil 802 and a magnetic component 803, when the filling port 101 is closed, the energized coil 802 is energized briefly once and then energized for a long time. The brief energization of the energized coil 802 causes the slider 602 to move a first distance; the long energization of the energized coil 802 causes the slider 602 to move a second distance. This allows the filter element 20 to be switched to and maintained in the first state regardless of whether it is in the first or second state, ensuring that the filter element 20 is in a state capable of filtering the fluid. This further reduces the possibility of the fluid entering the urea tank directly without filtration. For example, after filling is completed and the filling port 101 is closed, the energized coil 802 can be energized briefly once and then energized for a long time to prevent the filter element 20 from not being switched to the first state during manual operation, ensuring that the filter element 20 is still in the first state during the next filling.

[0084] According to some embodiments of the present invention, such as Figure 3 As shown, the filter element 20 includes a flexible frame 201 and a filter section 202. The circumferential edge of the filter section 202 is connected to the flexible frame 201. When the filter element 20 is located within the receiving cavity 301, the flexible frame 201 is in a folded state. When the filter element 20 is located within the fluid flow cavity 102, the flexible frame 201 is in an unfolded state, and the circumferential edge of the flexible frame 201 is sealed to the circumferential sidewall of the fluid flow cavity 102. By providing a foldable and unfoldable filter element 20, the filter element 20 occupies less space when moved into the receiving cavity 301, which helps to reduce the overall space occupied by the urea filling pipe 1000. The flexible frame 201 is an elastic and flexible structure that can expand and unfold within the fluid flow cavity 102, allowing the filter section 202 to unfold.

[0085] According to some embodiments of the present invention, the urea dispensing tube 1000 further includes a second detection element, which is used to detect whether the dispensing method of the urea dispensing tube 1000 is dispensing via a dispensing gun. The filter element 20 is configured to switch to a second state when the dispensing method of the urea dispensing tube 1000 is dispensing via a dispensing gun, and to switch to a first state after dispensing is completed. It should be noted that the switching of the filter element 20 between the first state and the second state can be manual switching by the user or automatic switching. When the user switches manually, for example, when the second detection element detects that the dispensing method of the urea dispensing tube 1000 is dispensing via a dispensing gun, a third detection element is configured to detect whether the filter element 20 is in the second state. For example, a position detection element can be configured to detect the position of the slider 602 to determine whether the filter element 20 is in the second state. If the filter element 20 is not in the second state, the user can be reminded to switch the filter element 20 to the second state. Alternatively, the switching can be automatic. For example, the execution control component can directly and automatically control the rope fixing component 60 to pull the first rope 40 sequentially, moving it a second distance and then a first distance, so that the filter element 20 switches to the second state without affecting the smoothness of the filling gun. Or, before filling, the filter element 20 is in the first state. In this case, the first rope 40 can be pulled directly to move it a first distance, for example, by briefly energizing the energizing coil 802, so that the filter element 20 switches to the second state. After filling is completed, it switches back to the first state. For example, after filling is completed, that is, after the filling port 101 returns to the closed state, the first rope 40 can be manually pulled to move it a second distance, so that the filter element 20 returns to the first state. Alternatively, the execution control component can directly control the rope fixing component 60 to pull the first rope 40 to move it a second distance, so that the filter element 20 returns to the first state.

[0086] More specifically, a typical refueling gun has a metal refueling rod, so a metal sensor can be installed to detect whether metal enters the refueling port 101, thereby determining whether the refueling method of the urea refueling tube 1000 is refueling with a refueling gun.

[0087] More specifically, such as Figures 3 to 5 As shown, the first elastic element 50 and the second elastic element 605 can be springs or other elastic components that can undergo elastic deformation and meet the usage requirements.

[0088] Another object of the present invention is to provide a vehicle including a urea filling pipe 1000 according to an embodiment of the present invention.

[0089] Compared with the prior art, the vehicle of the present invention has the same advantages as the urea filling pipe 1000 of the present invention, which will not be repeated here.

[0090] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0091] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0093] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A urea dispensing tube, characterized in that, include: The tube body (10) has a fluid flow cavity (102) and a filling port (101) communicating with the fluid flow cavity (102); A filter element (20) has a first state and a second state. In the first state, the circumferential edge of the filter element (20) engages with the circumferential wall of the fluid flow cavity (102) to filter the fluid flowing through the fluid flow cavity (102). In the second state, at least a portion of the outer periphery of the filter element (20) is separated from the inner circumferential wall of the fluid flow cavity (102). The filter element (20) is configured to switch between the first state and the second state. When the urea is added manually, the filter element is in the first state, and when the urea is added by a filling gun, the filter element is in the second state.

2. The urea injection tube according to claim 1, characterized in that, It also includes a housing (30) disposed on the tube body (10) and having a receiving cavity (301); the filter element (20) is configured to move between the fluid flow cavity (102) and the receiving cavity (301), wherein in a first state the filter element (20) is located within the fluid flow cavity (102); and in a second state the filter element (20) is at least partially located within the receiving cavity (301).

3. The urea injection tube according to claim 2, characterized in that, It also includes a first rope (40) and a first elastic element (50), one end of the first rope (40) and one end of the first elastic element (50) are respectively connected to the filter element (20), the first rope (40) is used to pull the filter element (20), and the other end of the first elastic element (50) is connected to the housing (30), the first elastic element (50) is used to provide a restoring force opposite to the pulling direction of the first rope (40).

4. The urea injection tube according to claim 3, characterized in that, It also includes a rope securing assembly (60) connected to the other end of the first rope (40); The rope fixing assembly (60) is used to pull the first rope (40) a first distance to switch the filter (20) from the first state and maintain it in the second state; The rope fixing assembly (60) is also used to pull the first rope (40) a second distance to switch the filter (20) from the second state and keep it in the first state.

5. The urea injection tube according to claim 4, characterized in that, The first distance is less than the second distance.

6. The urea injection tube according to claim 5, characterized in that, It also includes a first detection element for communication connection and an execution control component. The first detection element is used to detect whether the filling port (101) is in a closed state. The execution control component is used to control the rope fixing component (60) to perform a set action at least once when the filling port (101) is in a closed state. The set action is to pull the first rope (40) sequentially to move a first distance and then move a second distance.

7. The urea injection tube according to claim 4, characterized in that, The rope securing assembly (60) includes: A fastener (601) is provided on the tube body (10); A slider (602) is connected to the other end of the first rope (40), and the slider (602) is slidably disposed on the fixing member (601) in a set direction; The slider (602) is used to pull the first rope (40) a first distance to switch the filter (20) from the first state and maintain it in the second state; The slider (602) is also used to pull the first rope (40) a second distance to switch the filter (20) from the second state and keep it in the first state.

8. The urea injection tube according to claim 7, characterized in that, The rope fixing assembly (60) further includes a second elastic element (605), the two ends of which are connected to the fixing element (601) and the slider (602) respectively. The second elastic element (605) is used to provide a restoring force opposite to the pulling direction of the first rope (40).

9. The urea injection tube according to claim 7, characterized in that, It also includes a drive component for driving the slider (602) to slide along the set direction away from the first rope (40).

10. The urea injection tube according to claim 9, characterized in that, The drive assembly includes a second rope (801), one end of which is connected to the slider (602), the second rope (801) being used to pull the slider (602) along the predetermined direction and away from the first rope (40), and the other end of the second rope (801) extending outside the urea injection pipe; and / or, The driving assembly includes a cooperating energized coil (802) and a magnetic element (803), one of which is located on the slider (602), and the other is located on the fixing member (601). The energized coil (802) and the magnetic element (803) are magnetically engaged to apply a driving force to the slider (602) in a direction along the set direction and away from the first rope (40).

11. The urea injection tube according to claim 2, characterized in that, The filter element (20) includes a flexible frame (201) and a filter section (202). The circumferential edge of the filter section (202) is connected to the flexible frame (201). When the filter element (20) is located in the receiving cavity (301), the flexible frame (201) is in a folded state. When the filter element (20) is located in the fluid flow cavity (102), the flexible frame (201) is in an unfolded state and the circumferential edge of the flexible frame (201) is sealed to the circumferential sidewall of the fluid flow cavity (102).

12. The urea injection tube according to any one of claims 1-11, characterized in that, It also includes a second detection element, which is used to detect whether the urea filling method of the urea filling tube is filling with a filling gun. The filter element (20) is configured to switch to the second state when the urea filling method of the urea filling tube is filling with a filling gun, and to switch to the first state after the filling is completed.

13. A vehicle, characterized in that, Includes the urea infusion tubing according to any one of claims 1-12.

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