Large-capacity dual-fill water tank assembly and filling port extension device

Abstract

This utility model relates to a large-capacity dual-fill water tank assembly and a filling port extension device. A cylindrical filling port protrudes from the water tank body. The cylindrical filling port is equipped with a connecting cap, a bendable extension tube, an inner connector, and a water inlet component. The water inlet component includes a main body with a sleeve head formed at the tail end and a cap at the head end. The inner connector includes a hollow, conical plug made of rubber. The large end of the conical plug connects to the extension tube, and the outer diameter of the large end of the conical plug is larger than the diameter of the extension tube, forming a limiting end face. The cylindrical filling port has a conical, annular inner wall that is larger on the outside and smaller on the inside. The annular inner wall forms a conical sealing connection plug hole. The extension tube passes through a tube insertion hole on the axial cover plate of the connecting cap. The axial cover plate of the connecting cap presses against the limiting end face, thereby pressing the conical plug tightly into the sealing connection plug hole to achieve a seal. This extends the filling port of the water tank, allowing for flexible installation and arrangement of the water tank.

Description

Technical Field

[0001] This utility model relates to vehicle accessories, specifically a water storage tank installed and used on a vehicle. Background Technology

[0002] Vehicles are equipped with water tanks, and the location of these tanks varies between vehicles. On some trucks, the water tank is typically installed on the bottom, with the inlet close to the truck body. Existing water tank inlets are usually slightly protruding from the tank body, with a sealing gasket and protective cover inside. This design makes filling the tank inconvenient. Furthermore, the existing water tank filling structure design significantly restricts the tank's installation location. Summary of the Invention

[0003] The purpose of this invention is to overcome the defects of the existing technology by providing a filling port extension device for a water tank assembly, which extends the filling port of the water tank and allows for convenient liquid filling operations even with flexible installation and arrangement of the water tank.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A water tank assembly filling port extension device includes a cylindrical filling port protruding on the water tank body and a connecting cap threaded onto the cylindrical filling port. The device is characterized by further including a bendable extension tube, an inner connector connected to the inner end of the extension tube, and a water inlet component connected to the outer end of the extension tube. The water inlet component includes a filling port seat and a cap. The filling port seat includes a seat body with a sleeve head formed at the tail end, and a cap for opening and closing the filling port on the seat body at the head end. The inner connector... The device includes a hollow, conical plug made of rubber. The large end of the conical plug is connected to an extension tube, and the outer diameter of the large end of the conical plug is larger than the diameter of the extension tube, thus forming a limiting end face at the large end of the conical plug. The cylindrical injection port has a conical annular inner wall that is larger on the outside and smaller on the inside. The annular inner wall forms a conical sealing connection plug hole. The axial cover plate of the connecting cap has a tube through hole. The connecting cap is fitted onto the extension tube through the tube through hole. The axial cover plate of the connecting cap presses against the limiting end face, thereby pressing the conical plug tightly into the sealing connection plug hole to achieve a seal.

[0006] Preferably, the small-diameter end of the sealing connection plug hole is supported by a radially suspended annular portion.

[0007] Preferably, the annular portion is connected to the inner wall of the cylindrical injection port via an arc surface.

[0008] Preferably, the large end of the tapered plug extends axially to have a cylindrical portion, which protrudes beyond the edge of the sealing connection plug hole.

[0009] Preferably, the seat body is funnel-shaped, with a cap interface edge forming a filling port at the large end of the seat body. A mounting flange with mounting holes extends radially from the seat body and is located below the cap interface edge. The cap interface edge and the mounting flange are spaced apart, thereby forming an annular positioning groove between the cap interface edge and the mounting flange. The cap includes a cap-shaped body, with a flexible sheet extending radially from the cap-shaped body. A connecting ring is integrally formed on the flexible sheet and installed in the annular positioning groove.

[0010] This utility model also provides a large-capacity dual-fill water tank assembly, including a square water tank body, a cylindrical inlet protruding on the water tank body, and a connecting cap threaded onto the cylindrical inlet. A washing pump is provided at the bottom of the water tank body. The feature is that the water tank body also has a large-diameter inlet with a diameter larger than the cylindrical inlet, and the large-diameter inlet is equipped with a protective cap.

[0011] It also includes a bendable extension tube, an inner connector connected to the inner end of the extension tube, and a water inlet component connected to the outer end of the extension tube. The water inlet seat includes a seat body with a sleeve head formed at the tail end of the seat body. The head end of the seat body is covered with a cap for opening and closing the filling port on the seat body. The inner connector includes a hollow conical plug made of rubber. The large end of the conical plug is connected to the extension tube, and the outer diameter of the large end of the conical plug is larger than the diameter of the extension tube, so that the large end of the conical plug forms a limiting end face. The cylindrical injection port has a conical annular inner wall that is larger on the outside and smaller on the inside. The annular inner wall forms a conical sealing connection plug hole. The axial cover plate of the connecting cover is provided with a tube through hole. The connecting cover is fitted onto the extension tube through the tube through hole. The axial cover plate of the connecting cover presses against the limiting end face, thereby pressing the conical plug into the sealing connection plug hole to achieve a seal.

[0012] By adopting the above technical solution, a filling port design is achieved that is located away from the water storage tank body, thus facilitating the selection of the water storage tank body location while meeting liquid filling requirements. This provides the advantage of convenient liquid filling operation. Furthermore, it offers the advantages of simple and reliable sealing connection between the extension pipe and the water tank body; in addition, by simply replacing the cylindrical filling port with a protective cap, a water tank design without an extension pipe can be achieved, facilitating optional installation.

[0013] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the large-capacity dual-filling water tank assembly of this utility model;

[0015] Figure 2 This is a top view of the water tank body of this utility model;

[0016] Figure 3 for Figure 2A sectional view taken along line AA.

[0017] Figure 4 This is a schematic diagram of the structure of the filling port extension device of this utility model;

[0018] Figure 5 for Figure 4 A sectional view taken along line BB. Detailed Implementation

[0019] See appendix Figures 1-5 This utility model discloses a large-capacity dual-filling water tank assembly, including a square water tank body 1. A washing pump 2 is located at the bottom of the water tank body 1. The water tank body 1 adopts a dual-filling port design with one large and one small inlet to meet the large-capacity design requirements. Due to the large-capacity design of the water tank body 1, a liquid level sensor 3 is configured to detect the liquid level. To protect the liquid level sensor 3 and ensure its reliable operation after installation, a recessed portion 11 is provided at the bottom corner of the water tank body 1. A liquid level sensor 3 extending into the water tank body 1 is mounted on the recessed portion 11, with the outer end of the liquid level sensor 3 retracted into the recess 111 of the recessed portion 111. The recessed portion offsets the installation position of the liquid level sensor towards the inside of the tank body to ensure reliable operation, while the outer recess of the recessed portion provides shielding protection for the liquid level sensor.

[0020] The small-diameter filling port is a cylindrical filling port 12 protruding on the water tank body 1, and the cylindrical filling port 12 is threaded with a connecting cap 4. The large-diameter filling port 13 is equipped with a protective cap 5. It also includes a bendable extension tube 6, which is a rubber tube with steel wire wrapped inside to meet the requirements of bendability and reliability, an inner connector connected to the inner end of the extension tube 6, and a water inlet component 8 connected to the outer end of the extension tube 7.

[0021] The water inlet component 8 includes a water inlet seat 81 and a cap 82. The water inlet seat 81 includes a seat body 811, and a sleeve head 812 is formed at the tail end of the seat body 811. An extension sleeve 6 is on the sleeve head 812 and fixed by a pipe clamp (the pipe clamp is not shown in the figure). The cap 82 covers the head end of the seat body 811 and is used to open and close the filling port on the seat body 811. The cap 82 is preferentially associated with the seat body 811, so that when the cap 82 opens the filling port of the water inlet seat 81, it is also suspended on the water inlet seat 81 and is not easy to lose. The specific structure is as follows: the cap 82 is made of rubber and includes a cap-shaped body 821. A flexible sheet 822 extends radially from the cap-shaped body 821, and a connecting ring 823 is integrally formed on the flexible sheet 822. One end of the seat body 811 is formed with a cap interface edge 8111 that forms a filling port. A mounting flange 813 with mounting holes extends radially from the seat body 811 and is located below the cap interface edge 8111. The cap interface edge 8111 and the mounting flange 813 are spaced apart, thus forming an annular positioning groove 814 between them. A connecting ring 823 is fitted into the annular positioning groove 814. In this way, the connecting ring connects the cap to the seat body, and the flexible connecting piece allows the cap to be opened and fastened to the filling port. Moreover, this design has the advantage of a compact structure. The annular positioning groove is formed by the interval between the mounting flange and the cap interface edge of the seat body. The mounting flange facilitates the installation of the water inlet seat, and the cap interface edge provides the installation of the cap, resulting in a compact overall structure. The seat body 811 is funnel-shaped, with the cap interface edge 8111 formed at the large end of the seat body 811.

[0022] The inner connector includes a hollow, conical plug 7 made of rubber. The large end of the conical plug 7 is connected to the extension tube 6, and the outer diameter of the large end of the conical plug 7 is larger than the diameter of the extension tube 6, thus forming a limiting end face 71 at the large end of the conical plug 7. The cylindrical injection port 12 has a conical annular inner wall 121 that is larger on the outside and smaller on the inside. The annular inner wall 121 forms a conical sealing connection plug hole. The axial cover plate 41 of the connecting cover 4 is provided with a tube through hole 411. The connecting cover 41 is fitted onto the extension tube 64 through the tube through hole 411. The axial cover plate 41 of the connecting cover 4 presses against the limiting end face 71, thereby pressing the conical plug 7 into the sealing connection plug hole to achieve a seal. The small-diameter end of the sealing connection plug hole is supported by a radially suspended annular portion 122. Since the water tank is a plastic product, the above design, on the one hand, avoids the solid part forming the annular inner wall being too thick, which would affect the forming of the water inlet, and on the other hand, can better fit and seal with the conical plug, ensuring a reliable sealing connection.

[0023] Furthermore, the annular portion 122 is connected to the inner wall of the cylindrical injection port 12 via an arc surface 123, providing a more reliable connection strength.

[0024] To further ensure reliable compression and sealing of the conical plug, the large end of the conical plug 7 extends axially with a cylindrical portion 72, which protrudes from the edge of the sealing connection hole.

[0025] Another advantage of the filling port extension device of this utility model is its ease of selection and installation by the user. Specifically, the connecting cap screwed onto the cylindrical filling port has a tube through hole and connects to the extension tube and other components, thus forming a solution for using the filling port extension device on the water tank. Alternatively, a connecting cap screwed directly onto the cylindrical filling port is a traditional water tank protective cover, serving as a conventional filling port solution for water tanks. Of course, the filling port extension device can also be applied to other water tanks besides those in this specific embodiment, such as water tanks with a single filling port design.

Claims

1. A filler extension device for a water tank assembly, comprising a cylindrical filler neck protruding from a water tank body, and a cap screwable onto the cylindrical filler neck, characterized in that: It also includes a bendable extension tube, an inner connector connected to the inner end of the extension tube, and a water inlet component connected to the outer end of the extension tube. The water inlet component includes a water inlet seat and a cap. The water inlet seat includes a seat body with a sleeve head formed at the tail end. The head end of the seat body is covered with a cap for opening and closing the filling port on the seat body. The inner connector includes a hollow conical plug made of rubber. The large end of the conical plug is connected to the extension tube, and the outer diameter of the large end of the conical plug is larger than the diameter of the extension tube, so that the large end of the conical plug forms a limiting end face. The cylindrical injection port has a conical annular inner wall that is larger on the outside and smaller on the inside. The annular inner wall forms a conical sealing connection plug hole. The axial cover plate of the connecting cover has a tube through hole. The connecting cover is fitted onto the extension tube through the tube through hole. The axial cover plate of the connecting cover presses against the limiting end face, thereby pressing the conical plug into the sealing connection plug hole to achieve a seal.

2. The filler neck extension for a water tank assembly of claim 1, wherein: The small-diameter end of the sealing connection plug hole is supported by a radially suspended annular portion.

3. The filler neck extension for a water tank assembly of claim 2, wherein: The annular portion is connected to the inner wall of the cylindrical injection port via an arc surface.

4. The filler neck extension for a water tank assembly of claim 1 or 2 or 3, wherein: The large end of the tapered plug extends axially to a cylindrical portion, which protrudes beyond the edge of the sealing connection hole.

5. The filler neck extension for a water tank assembly of claim 1, wherein: The main body of the seat is funnel-shaped, and the large end of the main body is formed with a cap interface edge that forms a filling port. A mounting flange with mounting holes is radially extended on the main body and located below the cap interface edge. The cap interface edge and the mounting flange are spaced apart, thereby forming an annular positioning groove between the cap interface edge and the mounting flange. The cap includes a cap-shaped main body, and a flexible sheet extends radially from the cap-shaped main body. A connecting ring is integrally formed on the flexible sheet and is installed in the annular positioning groove.

6. A large-capacity dual-fill water tank assembly, comprising a square water tank body, a cylindrical inlet protruding on the water tank body, and a connecting cap threaded onto the cylindrical inlet; a washing pump is provided at the bottom of the water tank body, characterized in that: The water tank body is also provided with a large-diameter liquid inlet with a diameter larger than that of the cylindrical liquid inlet. The large-diameter liquid inlet is equipped with a protective cover, and the water tank body is provided with the liquid inlet extension device as described in any one of claims 1 to 5.

7. The large capacity dual fill water tank assembly of claim 6, wherein: The bottom corner of the water tank body is recessed, and a liquid level sensor is installed on the recessed part, extending into the water tank body. The outer end of the liquid level sensor is retracted into the recess of the recessed part.

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