An expansion tank for a motor vehicle

Abstract

The utility model relates to the field of automobile parts, especially to an expansion water tank for automobile, the water tank upper part's water injection pipe pipe orifice is provided with guide block, the side of guide block is provided with the notched, rotates and installs the closing plate in the notched, the outer edge of closing plate is equipped with rubber ring, and the outer edge of rubber ring is provided with a plurality of notches, in the utility model, the liquid level in water tank promotes when will excite closing plate to close inlet, make the liquid that does not add to overflow to clean up warning personnel to stop adding water, and then rubber ring and drainage hole mechanism slow seepage overflow liquid, whole operation process only needs to stop adding liquid according to overflow condition, and the operation is simple and easy to observe, improves the liquid operation convenience.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an expansion tank for automobiles. Background Technology

[0002] In automotive cooling systems, the expansion tank (also known as the auxiliary tank or expansion vessel) is a key component for coolant storage and pressure regulation, and is widely used in traditional vehicle designs.

[0003] Some traditional expansion tanks are equipped with MAX (maximum level) and LOW (minimum level) markings to guide operators in adding coolant and ensure that the level is within a safe range. However, in practical applications, this traditional structure can increase the risk of misoperation during the filling process due to factors such as differences in operator experience, environmental factors (such as insufficient light or rushed operation), and the visibility of the markings (aging, dirt accumulation, or external wear).

[0004] Therefore, traditional expansion tanks lack effective foolproof design, meaning users cannot quickly and directly add water through the tank, which urgently needs to be addressed. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an expansion tank for automobiles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An expansion tank for automobiles includes a tank, a guide block is provided at the water inlet of the water inlet located at the upper part of the tank, a slot is provided on one side of the guide block, a closing plate is rotatably installed in the slot, a rubber ring is provided on the outer edge of the closing plate, and several notches are provided on the outer edge of the rubber ring. An adjusting rod is installed on one side of the closed plate. A connecting rod is rotatably connected to the bottom of the adjusting rod. The connecting rod extends into the water tank and is equipped with a hollow float. When the closing plate is in a horizontal closed state, the rubber ring is pressed against the curved wall on the bottom wall of the guide block, and several notches are opened on the outer edge of the rubber ring to form drainage holes with the curved wall to achieve low flow of water.

[0007] In addition, a preferred structure is that a cover is rotatably installed on one side of the upper part of the water injection pipe, and the cover can cover the pipe opening installed on the water injection pipe.

[0008] In addition, a preferred structure is that the top surface of the guide block is an inclined surface, and a through hole is opened at the lower part of the inclined surface, and a closing plate is rotatably installed in the through hole.

[0009] In addition, a preferred structure is that a knob is rotatably mounted on one side of the closed plate, an adjusting rod is screwed inside the knob, and a connecting rod is rotatably connected to the bottom end of the adjusting rod via a pin.

[0010] In addition, a preferred structure is that a hollow float is fitted at the bottom of the connecting rod, and the bottom side of the hollow float is immersed in coolant and floats on the surface of the liquid by buoyancy.

[0011] The beneficial effects of this utility model are as follows: In this invention, when the liquid level in the water tank rises, it triggers the closing plate to close the water inlet, causing the unfilled liquid to overflow to clean and warn personnel to stop adding water. Then, the overflowing liquid is slowly drained by the rubber ring and the drain hole mechanism. The entire operation process only requires stopping the addition of liquid according to the overflow situation. The operation is simple and easy to observe, improving the convenience of adding liquid. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of an expansion tank for automobiles proposed in this utility model. Figure 2 This is a schematic diagram of the water injection pipe structure proposed in this utility model; Figure 3 This is a schematic diagram of the guide block structure proposed in this utility model; Figure 4 This is a schematic diagram of the internal structure of the water injection pipe proposed in this utility model; Figure 5 This is a schematic diagram of the rubber ring structure proposed in this utility model.

[0013] In the diagram: 1. Water tank; 2. Water inlet pipe; 3. Cover; 4. Guide block; 41. Curved wall; 5. Closing plate; 6. Connecting rod; 61. Hollow float; 7. Adjusting rod; 8. Knob; 9. Rubber ring; 10. Drain hole. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figure 1-5 An expansion tank for automobiles includes a water tank 1, and a guide block 4 is provided at the inlet of a water injection pipe 2 located at the upper part of the water tank 1. The water injection pipe 2 is connected to the interior of the water tank 1, and coolant can be added into the water tank 1 through the water injection pipe 2. In addition, the top surface of the guide block 4 is an inclined surface, and a through hole is provided at the lower part of the inclined surface. A closing plate 5 is rotatably installed in the through hole. A rubber ring 9 is provided on the outer edge of the closing plate 5, and several notches are provided on the outer edge of the rubber ring 9. When the closing plate 5 is in a horizontal closed state, the rubber ring 9 is pressed and contacted with the curved wall 41 on the bottom wall of the guide block 4, and several notches are opened on the outer edge of the rubber ring 9 to form drainage holes 10 with the curved wall 41 to achieve low flow of water.

[0016] A knob 8 is installed on one side of the closed plate 5 for limiting rotation. An adjusting rod 7 is screwed inside the knob 8. The adjusting rod 7 has a thread in the middle to match the knob 8. The bottom end of the adjusting rod 7 is rotatably connected to a connecting rod 6 through a pin. The connecting rod 6 extends into the water tank 1 and is equipped with a hollow float 61. The bottom side of the hollow float 61 is immersed in the coolant and floats on the surface of the liquid by buoyancy.

[0017] The side wall of the water tank 1 is equipped with MAX (maximum liquid level) and LOW (minimum liquid level) indicators. Under normal working conditions, the hollow float 61 is in the LOW (minimum liquid level) position. When the liquid is added above the LOW (minimum liquid level) indicator, the liquid pushes the hollow float 61 to float.

[0018] The side wall of the water tank 1 is equipped with indicators for the maximum liquid level (MAX) and the minimum liquid level (LOW). In the default state, the hollow float 61 is located at the minimum liquid level (LOW) mark. When coolant is added and exceeds the minimum liquid level (LOW) mark, the buoyancy generated by the rise in liquid level will drive the hollow float 61 to float.

[0019] It should be noted that the specific scale values ​​and spacing of the maximum liquid level (MAX) and the minimum liquid level (LOW) need to be set according to the actual model of the water tank and the actual operating conditions. This will not be explained in detail here, as it is common knowledge for those skilled in the art.

[0020] A cover 3 is rotatably installed on one side of the upper part of the water injection pipe 2, and the cover 3 can cover the pipe opening installed on the water injection pipe 2.

[0021] In this embodiment, the cover 3 on the upper water inlet pipe 2 of the water tank 1 is opened, and coolant is added until the liquid in the tank comes into contact with the hollow float 61. The buoyancy generated by the rise in liquid level will drive the hollow float 61 to float up and drive the adjusting rod 7 to rise through the connecting rod 6, thereby driving the closing plate 5 to rotate around the axis until the liquid level rises to the point that the closing plate 5 is completely attached to the bottom wall of the guide block 4 and the liquid inlet is sealed by the rubber ring 9. If liquid is added continuously at this time, the liquid at the guide block 4 will overflow (instead of the liquid overflowing from the water inlet pipe 2), thus prompting the operator to stop adding liquid. At this time, the overflowed liquid will accumulate in the area between the guide block 4 and the water inlet pipe 2.

[0022] After the water injection stops, the overflowing liquid will slowly leak through the drain hole 10 formed between the rubber ring 9 and the curved wall 41 until it is drained. At this time, the closing plate 5 is still closed, and the hollow float 61 is in the area between the highest liquid level (MAX) and the lowest liquid level (LOW) indication scale. The amount of liquid overflowing from guide block 4 is small and has no actual impact on the overall liquid filling volume and liquid level control of water tank 1, so it can be ignored.

[0023] In practical applications, during the process of adding liquid by personnel, the water volume or water pressure increases, resulting in a large flow rate. However, the flow capacity of the drain hole 10 is limited, and the water flow velocity is much lower than the inlet velocity, causing the upstream water level to rise rapidly until it overflows or overflows. Correspondingly, under low water volume or low water pressure conditions (i.e., when adding water stops), the water flows slowly through the drain hole 10 by seepage, achieving the normal micro-drainage function.

[0024] In addition, rotating the knob 8 can drive the threaded adjusting rod 7 to move vertically up and down, thereby adjusting the installation height of the hollow float 61 at the bottom. This operation is essentially a coarse adjustment of the minimum liquid level threshold at which the liquid in the water tank 1 triggers the float to start floating, so as to meet the water filling needs of different liquid volumes.

[0025] Compared to traditional water tanks, this mechanism uses an automatically closing wave-shaped closing plate 5 and a drain hole 10 to create a foolproof mechanism for adding water manually: water can be added directly without aligning it with the liquid level mark, and adding water can be stopped when the water overflows appropriately.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An expansion tank for automobiles, comprising a water tank (1), characterized in that, A guide block (4) is provided at the inlet of the water injection pipe (2) located at the top of the water tank (1). A slot is provided on one side of the guide block (4). A closing plate (5) is rotatably installed in the slot. A rubber ring (9) is provided on the outer edge of the closing plate (5). Several notches are provided on the outer edge of the rubber ring (9). An adjusting rod (7) is installed on one side of the closed plate (5). A connecting rod (6) is rotatably connected to the bottom of the adjusting rod (7). The connecting rod (6) extends into the water tank (1) and is equipped with a hollow float (61). When the closing plate (5) is in a horizontal closed state, the rubber ring (9) is pressed into contact with the curved wall (41) provided on the bottom wall of the guide block (4), and several notches are provided on the outer edge of the rubber ring (9) to form drainage holes (10) with the curved wall (41) to achieve low flow of water.

2. The expansion tank for automobiles according to claim 1, characterized in that, A cover (3) is rotatably installed on one side of the upper part of the water injection pipe (2), and the cover (3) can cover the pipe opening installed on the water injection pipe (2).

3. The expansion tank for automobiles according to claim 1, characterized in that, The top surface of the guide block (4) is an inclined surface, and a through hole is provided at the lower part of the inclined surface. A closing plate (5) is rotatably installed in the through hole.

4. An expansion tank for automobiles according to claim 1, characterized in that, A knob (8) is installed on one side of the closed plate (5) for limiting rotation. An adjusting rod (7) is screwed inside the knob (8). The bottom end of the adjusting rod (7) is rotatably connected to a connecting rod (6) through a pin.

5. An expansion tank for automobiles according to claim 1, characterized in that, The bottom end of the connecting rod (6) is equipped with a hollow float (61), the bottom side of which is immersed in coolant and floats on the surface of the liquid by buoyancy.

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