Water injection structure for vehicle-mounted water tank

Abstract

The invention discloses a water injection structure for a vehicle-mounted water tank, which relates to the field of water injection of vehicle-mounted water tanks and comprises a water tank body, a water inlet pipe, a joint and a one-way switch assembly, a through hole and a groove communicated with the through hole are formed in the side face of the lower portion of the water tank body, the water inlet pipe is fixedly connected with the water tank body, and the water inlet pipe penetrates through the through hole and extends into the groove. In addition, through automatic opening of the one-way switch assembly in water injection and automatic closing of the one-way switch assembly in disconnection of an external water source, on one hand, water in the water tank body can be prevented from flowing back, and on the other hand, manual intervention of a user on opening and closing of the valve is not needed. Water leakage caused by negligence possibly occurring in manual operation is avoided, manual operation steps are reduced, and use is more convenient.

Description

Technical Field

[0001] This invention relates to the field of vehicle-mounted water tank filling technology, and more specifically to a water filling structure for vehicle-mounted water tanks. Background Technology

[0002] In specialized vehicles such as water trucks and fire trucks, it is usually necessary to replenish the onboard water tank using an external water source, such as by connecting a dedicated water hose to a fire hydrant. The current practice involves creating an inlet at the bottom of the water tank and connecting a standard quick-connect coupling, a ball valve, and a pipe in sequence. When replenishing water, the ball valve is opened first, then the quick-connect coupling is connected to the external water source; after replenishment, the ball valve is closed first, then the quick-connect coupling is disconnected. The entire operation relies on manually opening and closing the ball valve, which is cumbersome and prone to errors such as forgetting to close the valve before disconnecting the coupling, leading to significant water leakage from the tank, wasting water resources and polluting the working environment. Furthermore, for compact small specialized vehicles, the quick-connect coupling and ball valve are bulky and require excessive space in the overall vehicle design. Summary of the Invention

[0003] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a water filling structure for vehicle-mounted water tanks.

[0004] The objective of this invention can be achieved through the following technical solutions: A water injection structure for a vehicle-mounted water tank, comprising: Water tank body, water inlet pipe, connectors, and one-way switch assembly; The lower side of the water tank body has a through hole and a groove communicating with the through hole. The water inlet pipe is fixedly connected to the water tank body. The water inlet pipe extends through the through hole into the groove. The two ends of the water inlet pipe are the water inlet and the water outlet, respectively. The water inlet is located in the groove and is connected to the connector. The water outlet is located in the cavity of the water tank body and is connected to the one-way switch assembly. The connector is located in the groove. The water outlet is close to the top of the cavity of the water tank body.

[0005] As a further aspect of the present invention: the water inlet pipe is L-shaped, the water inlet pipe includes a connecting section that is sleeved with the through hole and a vertical section that communicates with the connecting section, the water outlet is located at the top of the vertical section, and the vertical section is parallel to the height direction of the water tank body and extends to the top of the cavity near the water tank body.

[0006] As a further aspect of the present invention: the one-way switch assembly includes a cover plate and a fixing block fixedly connected to the end of the vertical section. The fixing block and the cover plate are hinged together by a hinge. A return spring is provided on the hinge. The return spring is used to provide pressure to make the cover plate fit with the water outlet.

[0007] As a further aspect of the present invention: the outlet has an inclined surface, and the cover plate has a sealing element on the side facing the outlet. The sealing element is spherical, and when the cover plate is in contact with the outlet, the inclined surface is in contact with the side of the sealing element.

[0008] As a further embodiment of the present invention: a through groove is provided on the side of the cover plate, and a limiting member is provided on the outer side of the vertical section; The limiting component includes a connecting block fixedly connected to the outside of the vertical section, an arc-shaped rod connected to the connecting block, the arc-shaped rod passing through the through groove, and a protrusion fixedly connected to one end of the connecting block. The protrusion is located on the side of the cover plate away from the water outlet to limit the movement stroke of the cover plate.

[0009] As a further aspect of the present invention: an auxiliary spring is sleeved on the arc-shaped rod, and the two ends of the auxiliary spring are respectively connected to the cover plate and the connecting block. The auxiliary spring has a tendency to make the cover plate fit against the end face of the water outlet.

[0010] As a further aspect of the present invention: multiple through slots are provided on the side of the cover plate, and multiple limiting members adapted to the positions of the through slots are provided on the outer side of the vertical section, and each limiting member is provided with an auxiliary spring.

[0011] As a further aspect of the present invention: the water outlet is provided with an annular groove, and a sealing ring is nested inside the annular groove.

[0012] As a further aspect of the present invention, the water inlet pipe is made of aluminum alloy or stainless steel.

[0013] As a further aspect of the present invention: the connector is provided with two symmetrically distributed locking tongues, which are adapted to the grooves of the fire hydrant water pipe.

[0014] The beneficial effects of the present invention include, but are not limited to: by placing the connector inside the groove of the water tank body and placing the one-way switch assembly inside the water tank body, the present invention saves space for special vehicles, especially small special vehicles. In addition, by automatically opening when water is added and automatically closing when the external water source is disconnected through the one-way switch assembly, it can prevent water backflow in the water tank body. On the other hand, it eliminates the need for manual intervention in opening and closing the valve, avoiding water leakage caused by negligence in manual operation, reducing manual operation steps, and making it more convenient to use. Attached Figure Description

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a cross-sectional view of the overall structure of an embodiment of the present invention; Figure 3 This is a schematic diagram of the interface, water inlet pipe, and one-way switch assembly according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a unidirectional switch assembly according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the annular groove and sealing ring according to an embodiment of the present invention; Figure 6 This is a side view of the one-way switch assembly and the limiting member according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the connector structure according to an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 100, water tank body; 200, water inlet pipe; 300, connector; 400, one-way switch assembly; 101, through hole; 102, groove; 201, water inlet; 202, water outlet; 203, connecting section; 204, vertical section; 401, cover plate; 402, fixing block; 403, hinge; 404, return spring; 221, inclined surface; 405, sealing element; 411, through groove; 406, limiting element; 461, connecting block; 462, arc-shaped rod; 463, protrusion; 464, auxiliary spring; 222, annular groove; 223, sealing ring; 301, locking tongue. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] See Figures 1-3An embodiment of the present invention provides a water filling structure for a vehicle-mounted water tank, comprising: a water tank body 100, a water inlet pipe 200, a connector 300, and a one-way switch assembly 400; a through hole 101 and a groove 102 communicating with the through hole 101 are provided on the lower side of the water tank body 100, the through hole 101 penetrates the inside and outside of the water tank body 100, the opening of the groove 102 faces the outside of the water tank body 100, the water inlet pipe 200 is fixedly connected to the water tank body 100, the water inlet pipe 200 extends through the through hole 101 into the groove 102, and both ends of the water inlet pipe 200 are connected to the through hole 101. The water inlet 201 and outlet 202 are respectively located in the groove 102 and connected to the connector 300. The outlet 202 is located in the cavity of the water tank body 100 and connected to the one-way switch assembly 400. The connector 300 is located in the groove 102. The outlet 202 is close to the top of the cavity of the water tank body 100, which facilitates the continuous flow of water through the inlet pipe 200 into the interior of the water tank body 100. The ends of the connector 300 and the inlet pipe 200 are both located in the groove 102 and do not protrude from the outer wall of the water tank body 100, thus saving space.

[0020] Specifically, when it is necessary to fill the vehicle water tank, the user connects the fire hydrant water pipe to the connector 300. The water flows through the inlet pipe 200 from the inlet 201 to the outlet 202. Under the action of water pressure, the one-way switch assembly 400 is pushed open, and the water enters the water tank body 100. After the water filling is completed, the external water source is disconnected, and the one-way switch assembly 400 automatically closes to prevent the water in the water tank body 100 from flowing back.

[0021] Furthermore, this embodiment saves space for special vehicles by placing the connector 300 inside the groove 102 of the water tank body 100 and placing the one-way switch assembly 400 inside the water tank body 100, which is especially suitable for small special vehicles. In addition, by automatically opening when water is added and automatically closing when the external water source is disconnected through the one-way switch assembly 400, it can prevent water backflow in the water tank body 100. On the other hand, it eliminates the need for manual intervention in opening and closing the valve, avoiding water leakage caused by negligence in manual operation, reducing manual operation steps, and making it more convenient to use.

[0022] See Figures 1-3 Optionally, the water inlet pipe 200 is L-shaped and includes a connecting section 203 that is sleeved with the through hole 101 and a vertical section 204 that communicates with the connecting section 203. The water outlet 202 is located at the top of the vertical section 204. The vertical section 204 is parallel to the height direction of the water tank body 100 and extends to the top of the cavity near the water tank body 100.

[0023] In this embodiment, the outflow is injected upward into the cavity through the vertical section 204. Gravity can balance the impact of the incoming water and stabilize the water flow. The outlet 202 is set near the top of the water tank body to avoid the outlet 202 being interfered with by the water pressure inside the water tank body too early, thus reducing the water injection efficiency.

[0024] See Figure 4 Optionally, the one-way switch assembly 400 includes a cover plate 401 and a fixing block 402 fixedly connected to the end of the vertical section 204. The fixing block 402 and the cover plate 401 are hinged together by a hinge 403. A return spring 404 is provided on the hinge 403. The return spring 404 is a torsion spring and is used to provide pressure to make the cover plate 401 fit with the outlet 202.

[0025] In this embodiment, when no water is being injected, the torsion spring causes the cover plate 401 to adhere to the end face of the water inlet pipe 200 via the hinge 403, blocking the water outlet 202. When water is being injected, the water flow impacts the cover plate 401 upwards, opening the cover plate 401 and allowing water to continuously enter the water inlet pipe 200. When the external water source stops injecting water, the cover plate 401 is reset by the spring force, blocking the water outlet 202.

[0026] Preferably, the reset spring 404 is a cylindrical helical compression spring made of stainless steel. Through precise design and selection of the spring stiffness coefficient, the one-way switch assembly 400 can reliably push the cover plate 401 to open under a water flow pressure of about 0.1 MPa. When the water flow pressure is lower than about 0.05 MPa, the reset spring 404 can quickly drive the cover plate 401 to reset and seal the water outlet 202, ensuring that this water injection structure responds promptly under common municipal water pressure.

[0027] See Figure 4 Optionally, the outlet 202 is provided with an inclined surface 221, and a sealing element 405 is provided on the side of the cover plate 401 facing the outlet 202. The sealing element 405 is spherical and crown-shaped. When the cover plate 401 is in contact with the outlet 202, the inclined surface 221 is in contact with the side of the sealing element 405.

[0028] In this embodiment, the surface fit design of the inclined surface 221 and the side wall of the spherical seal 405 enhances the sealing effect and prevents water from flowing back out of the water tank body 100 through the water inlet pipe 200.

[0029] See Figure 6Optionally, a through groove 411 is provided on the side of the cover plate 401, and a limiting member 406 is provided on the outer side of the vertical section 204; the limiting member 406 includes a connecting block 461 fixedly connected to the outer side of the vertical section 204, an arc-shaped rod 462 fixedly connected to the upper side of the connecting block 461, the arc-shaped rod 462 passing through the through groove 411, and a protrusion 463 fixedly connected to one end of the connecting block 461. The protrusion 463 is located on the side of the cover plate 401 away from the outlet 202 to limit the movement stroke of the cover plate 401. The presence of the arc-shaped rod 462 does not interfere with the rotation of the cover plate 401 through the hinge 403.

[0030] In this embodiment, when the cover plate 401 is impacted by the water flow in the water inlet pipe 200 and flips upward, it is restricted by the protrusion 463 when it flips upward to a certain angle, which prevents the external water flow impact from being too large and exceeding the elastic range of the return spring 404, thus causing it to fail and improving the durability of this structure. In this embodiment, the limiting angle of the protrusion is between 30 degrees and 45 degrees.

[0031] See Figure 6 Optionally, an auxiliary spring 464 is sleeved on the arc-shaped rod 462. The two ends of the auxiliary spring 464 are connected to the cover plate 401 and the connecting block 461, respectively. The auxiliary spring 464 has a tendency to make the cover plate 401 fit against the end face of the outlet 202.

[0032] In this embodiment, the auxiliary spring 464 assists the reset spring 404 with its elasticity to keep the cover plate 401 in contact with the outlet 202, ensuring that the cover plate 401 can still be in contact with the outlet 202 even if the reset spring 404 fails or its performance deteriorates.

[0033] Optionally, the cover plate 401 has multiple through slots 411 on its upper side, and multiple limiting members 406 adapted to the positions of the through slots 411 are provided on the outer side of the vertical section 204. Each limiting member 406 is equipped with an auxiliary spring 464. The number of limiting members 406 is appropriately set so as not to affect the opening of the cover plate 401. By setting multiple limiting members 406 and auxiliary springs 464, the cover plate 401 can be subjected to uniform force, resulting in stronger sealing performance.

[0034] See Figure 5 Optionally, the outlet 202 is provided with an annular groove 222, and a sealing ring 223 is nested in the annular groove 222. When the cover plate 401 is closed, the sealing ring 223 is deformed by pressure and fills the micro-gap between the sealing element 405 and the outlet 202.

[0035] Optionally, the water inlet pipe 200 can be made of aluminum alloy or stainless steel, which is corrosion resistant and extends the service life of the structure.

[0036] See Figure 7Optionally, the connector 300 is provided with two symmetrically distributed locking tongues 301, which are adapted to the groove 102 of the fire hydrant water pipe. The connector 300 adopts a standard connector 300 adapted to the fire water pipe.

[0037] In this embodiment, a standardized connector 300 is used. When the external fire hydrant water pipe is installed on this connector 300, the locking tongue 301 cooperates with the slot of the fire hydrant connector 300, and the water pipe can be quickly locked by rotating it 90 degrees.

[0038] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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 a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature 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, "multiple" means two or more.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., 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 communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A water injection structure for a vehicle-mounted water tank, characterized in that, include: Water tank body (100), water inlet pipe (200), connector (300) and one-way switch assembly (400); The lower side of the water tank body (100) is provided with a through hole (101) and a groove (102) communicating with the through hole (101). The water inlet pipe (200) is fixedly connected to the water tank body (100). The water inlet pipe (200) extends through the through hole (101) into the groove (102). The two ends of the water inlet pipe (200) are the water inlet (201) and the water outlet (202), respectively. The water inlet (201) is located in the groove (102) and is connected to the connector (300). The water outlet (202) is located in the cavity of the water tank body (100) and is connected to the one-way switch assembly (400). The connector (300) is located in the groove (102). The water outlet (202) is close to the top of the cavity of the water tank body (100).

2. The water injection structure for a vehicle-mounted water tank according to claim 1, characterized in that, The inlet pipe (200) is L-shaped and includes a connecting section (203) that is sleeved with the through hole (101) and a vertical section (204) that communicates with the connecting section (203). The outlet (202) is located at the top of the vertical section (204). The vertical section (204) is parallel to the height direction of the water tank body (100) and extends to the top of the cavity near the water tank body (100).

3. The water injection structure for a vehicle-mounted water tank according to claim 2, characterized in that, The one-way switch assembly (400) includes a cover plate (401) and a fixing block (402) fixedly connected to the end of the vertical section (204). The fixing block (402) and the cover plate (401) are hinged together by a hinge (403). A return spring (404) is provided on the hinge (403). The return spring (404) is used to provide pressure to make the cover plate (401) fit against the outlet (202).

4. The water injection structure for a vehicle-mounted water tank according to claim 3, characterized in that, The outlet (202) has an inclined surface (221) inside. The cover plate (401) has a sealing element (405) on the side facing the outlet (202). The sealing element (405) is spherical. When the cover plate (401) is in contact with the outlet (202), the inclined surface (221) is in contact with the side of the sealing element (405).

5. The water injection structure for a vehicle-mounted water tank according to claim 4, characterized in that, The cover plate (401) has a through groove (411) on its side, and a limiting member (406) is provided on the outside of the vertical section (204). The limiting member (406) includes a connecting block (461) fixedly connected to the outside of the vertical section (204), an arc rod (462) connected to the connecting block (461), the arc rod (462) passing through the through groove (411), and a protrusion (463) fixedly connected to one end of the connecting block (461). The protrusion (463) is located on the side of the cover plate (401) away from the outlet (202) to limit the movement of the cover plate (401).

6. The water injection structure for a vehicle-mounted water tank according to claim 5, characterized in that, An auxiliary spring (464) is fitted on the arc-shaped rod (462). The two ends of the auxiliary spring (464) are connected to the cover plate (401) and the connecting block (461) respectively. The auxiliary spring (464) has a tendency to make the cover plate (401) fit against the end face of the outlet (202).

7. The water injection structure for a vehicle-mounted water tank according to claim 6, characterized in that, The cover plate (401) has multiple through slots (411) on its upper side. The vertical section (204) has multiple limiting members (406) on its outer side that are adapted to the position of the through slots (411). Each limiting member (406) is provided with an auxiliary spring (464).

8. The water injection structure for a vehicle-mounted water tank according to claim 4, characterized in that, The outlet (202) is provided with an annular groove (222), and a sealing ring (223) is nested inside the annular groove (222).

9. The water injection structure for a vehicle-mounted water tank according to claim 1, characterized in that, The water inlet pipe (200) is made of aluminum alloy or stainless steel.

10. The water injection structure for a vehicle-mounted water tank according to claim 1, characterized in that, The connector (300) is provided with two symmetrically distributed locking tongues (301), which are adapted to the groove (102) of the fire hydrant water pipe.

Images