Dual-purpose rollover valve mechanism

Abstract

The utility model relates to the technical field of automobile valve, especially a dual-purpose upset valve mechanism, including first valve core, valve body and upper valve cover, the upper valve cover sets up in the valve body upper end, and is equipped with the exhaust port on the upper valve cover, the valve body lower extreme is equipped with the first air inlet, and the first valve core slidingly sets up between the valve body and the upper valve cover, and can open and close the exhaust port, the valve body includes first valve cavity and second valve cavity, and both communicate through the connecting hole, the first valve core is located in the first valve cavity, and the second valve core is slidably arranged in the second valve cavity, and the second valve core can open and close the connecting hole, the first valve cavity is close to the lower end and is equipped with the second air inlet, the utility model has the advantages of providing the dual-purpose upset valve mechanism suitable for the special-shaped oil tank, which can simultaneously discharge the gas in the two ends of the oil tank.

Description

Technical Field

[0001] This utility model relates to the field of automotive valve technology, specifically to a dual-purpose tipping valve mechanism. Background Technology

[0002] For fuel to flow from a car's fuel tank, the air pressure inside and outside the tank needs to be balanced. Therefore, an internal and external gas exchange pipe needs to be installed on the top cover of the fuel tank. The fuel tank tipping valve is located inside the internal and external gas exchange pipe on the inside side of the top cover of the fuel pump assembly. It is used to prevent fuel from overflowing from the gas exchange pipe due to bumps or tipping of the car.

[0003] However, the existing tipping valve only has one air inlet and is only suitable for use with one fuel tank. For irregularly shaped fuel tanks, it cannot exhaust gas from both ends of the tank at the same time, causing gas to flow in the small space and making it difficult to exhaust, thus creating a safety hazard. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to address the shortcomings of the prior art by providing a solution suitable for irregularly shaped oil tanks, which can simultaneously discharge gas from both ends of the oil tank, leaving sufficient space for the auxiliary pump and reducing safety hazards caused by insufficient space.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual-purpose tipping valve mechanism, comprising a first valve core, a valve body, and an upper valve cover, wherein the upper valve cover is disposed on the upper end of the valve body and has an exhaust port, and the lower end of the valve body has a first air inlet, the first valve core is slidably disposed between the valve body and the upper valve cover and is capable of opening and closing the exhaust port, characterized in that: the valve body includes a first valve cavity and a second valve cavity, and the two are connected through a connecting hole, the first valve core is located in the first valve cavity, the second valve core is slidably disposed in the second valve cavity and is capable of opening and closing the connecting hole, and the first valve cavity has a second air inlet near its lower end.

[0006] The above technical solution, compared with the existing technology which only has one air inlet, utilizes a first valve core, a second valve core, and a second air inlet. The first and second air inlets are connected to both ends of the irregularly shaped fuel tank, allowing for simultaneous exhaust of gas from both ends, providing sufficient space for the auxiliary pump and reducing safety hazards caused by insufficient space. During use, the irregularly shaped fuel tank exhausts gas through the first and second air inlets respectively. Under normal conditions, the first and second valve cores remain open due to their own weight. Gas entering through the first air inlet can enter the first valve chamber through the second valve chamber and exit through the exhaust port, while gas entering through the second air inlet can enter the first valve chamber and exit through the exhaust port. When the fuel level in the tank reaches the closing height or the vehicle tilts during operation, the first and second valve cores rise due to buoyancy overcoming their own weight, closing the exhaust port and connection hole respectively, achieving isolation and preventing fuel from overflowing from the exhaust port.

[0007] A further feature of this invention is that the first valve core includes a first diaphragm frame slidably disposed within the upper valve cover, the first diaphragm frame having a first diaphragm, the first diaphragm being capable of opening and closing the exhaust port, and the upper valve cover having a limiting member.

[0008] The above technical solution is adopted: During use, gas enters the first valve chamber from the first air inlet and the second air inlet and is discharged through the exhaust port. When the vehicle is overturned, the first diaphragm and the first diaphragm frame move upward due to gravity, closing the exhaust port, cutting off the airflow channel between the fuel tank and the outside, and preventing fuel from flowing in from the second air inlet and overflowing from the exhaust port.

[0009] A further feature of this invention is that: at least two sets of limiting grooves are symmetrically provided on the outer wall of the upper end of the limiting member, and a limiting block is provided on the inner side of the first diaphragm frame corresponding to the limiting groove, and the limiting block can reciprocate along the limiting groove.

[0010] The above technical solution is adopted: by setting the limiting groove on the limiting member and the limiting block on the first diaphragm frame, the first diaphragm frame can move back and forth along the limiting groove through the limiting block, and the limiting groove plays a limiting role on the limiting block.

[0011] A further feature of this invention is that a lower valve cover is provided at the lower end of the second valve chamber, and the lower valve cover has a plurality of air holes communicating with the second valve chamber.

[0012] The above technical solution is adopted: by setting the lower valve cover, and opening several air holes on the lower valve cover to connect to the second valve chamber, and the lower valve cover is connected to the oil tank, the gas in one end of the oil tank can enter the second valve chamber through the air holes, then pass through the first valve chamber, and finally be discharged through the exhaust port.

[0013] A further feature of this invention is that the second valve core includes a second diaphragm frame slidably disposed in the second valve cavity, a second diaphragm is disposed on the second diaphragm frame, the second diaphragm is capable of opening and closing the air outlet, a second spring mounting cavity is formed between the lower valve cover and the second diaphragm frame, and a second spring is disposed in the second spring mounting cavity.

[0014] The above technical solution is adopted as follows: During use, when the fuel in the tank reaches the closing height or the vehicle tilts during driving, the second diaphragm and the second diaphragm frame move upward due to the buoyancy and the elastic force of the second spring, overcoming their own weight, and close the connection hole, thereby isolating the first valve chamber and the second valve chamber, preventing fuel from entering from the first air intake and entering the second valve chamber through the connection hole. When the vehicle returns to normal, the second diaphragm moves downward due to its own weight, and at the same time compresses the second spring. The elastic force of the second spring is less than the weight of the second diaphragm and the second diaphragm frame.

[0015] A further feature of this invention is that: at least two mounting blocks are provided opposite to each other on the upper valve cover, each mounting block has a slot, the inner wall of the slot has an elastic locking block, the upper end of the valve body extends upward with a corresponding insert, the insert has a slot, the insert can be inserted into the slot, and the elastic locking block can be locked into the slot.

[0016] The above technical solution is adopted as follows: During the installation process, the insert is inserted into the corresponding slot, the elastic block is squeezed, and as the insert is inserted to a certain position, the elastic block enters the slot to achieve a snap-fit. Finally, the entire valve body is connected to the fuel pump cover by a snap-fit. In addition, the fuel pump cover is provided with an exhaust pipe connected to the exhaust port.

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a cross-sectional view of the present invention.

[0020] Figure 3 This is an exploded view of the present invention.

[0021] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.

[0022] Figure 5 This is an assembly drawing of the present invention and the fuel pump cover.

[0023] Labeling: Valve body 1, first valve chamber 11, second valve chamber 12, connecting hole 13, first air inlet 14, second air inlet 15, insert 16, slot 161, upper valve cover 2, exhaust port 21, limiting component 22, limiting slide groove 221, mounting block 23, slot 24, elastic block 25, lower valve cover 3, air hole 31, first valve core 4, first diaphragm holder 41, limiting block 411, first diaphragm 42, first spring mounting cavity 43, first spring 44, second valve core 5, second diaphragm holder 51, second diaphragm 52, second spring mounting cavity 53, second spring 54, fuel pump top cover 6, exhaust pipe 61. Detailed Implementation

[0024] In the accompanying drawings of this specific embodiment and the disclosed embodiments, only the structures involved in the disclosed embodiments are involved. Other structures can be referred to with ordinary design. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of this utility model, they are protected by patent law.

[0025] like Figure 1-5 The dual-purpose tipping valve mechanism shown includes a first valve core 4, a valve body 1, and an upper valve cover 2. The upper valve cover 2 is disposed on the upper end of the valve body 1 and has an exhaust port 21. The lower end of the valve body 1 has a first air inlet 14. The first valve core 4 is slidably disposed between the valve body 1 and the upper valve cover 2 and can open and close the exhaust port 21. The valve body 1 includes a first valve chamber 11 and a second valve chamber 12, which are connected through a connecting hole 13. The first valve core 4 is located in the first valve chamber 11. A second valve core 5 is slidably disposed in the second valve chamber 12 and can open and close the connecting hole 13. A second air inlet 15 is opened near the lower end of the first valve chamber 11.

[0026] like Figure 2 The first valve core 4 shown includes a first diaphragm frame 41 slidably disposed within the upper valve cover 2. A first diaphragm 42 is disposed on the first diaphragm frame 41, and the first diaphragm 42 can open and close the exhaust port 21. A limiting member 22 is provided within the upper valve cover 2. Preferably, a first spring mounting cavity 43 is formed between the upper end of the limiting member 22 and the first diaphragm frame 41. A first spring 44 is disposed within the first spring mounting cavity 43, and the elastic force of the first spring 44 is less than the weight of the first diaphragm 42 and the first diaphragm frame 41. Figure 2 The upper outer wall of the limiting member 22 shown is symmetrically provided with at least two sets of limiting grooves 221, and the inner side of the first diaphragm frame 41 is provided with a limiting block corresponding to the limiting groove 221. The limiting block can move back and forth along the limiting groove 221.

[0027] like Figure 3 The lower end of the second valve chamber 12 shown is provided with a lower valve cover 3, and the lower valve cover 3 is provided with a plurality of air holes 31 communicating with the second valve chamber 12; for example Figure 2The second valve core 5 shown includes a second diaphragm holder 51 slidably disposed in the second valve cavity 12, a second diaphragm 52 disposed on the second diaphragm holder 51, the second diaphragm 52 being able to open and close the connection hole 13, a second spring mounting cavity 53 being formed between the lower valve cover 3 and the second diaphragm holder 51, and a second spring 54 disposed in the second spring mounting cavity 53.

[0028] like Figure 3-4 The upper valve cover 2 shown has at least two mounting blocks 23 facing each other. The mounting blocks 23 have slots 24, and the inner wall of the slots 24 has elastic blocks 25. The upper end of the valve body 1 extends upward with a corresponding insert 16. The insert 16 has a slot 161. The insert 16 can be inserted into the slot 24 and cause the elastic blocks 25 to be engaged in the slot 161. During the installation process, the insert 16 is inserted into the corresponding slot 24, and the elastic blocks 25 are squeezed. As the insert 16 is inserted to a certain position, the elastic blocks 25 enter the slot 161 to achieve engagement. Finally, the entire valve body 1 is connected to the fuel pump cover 6 by a snap fastener. In addition, the fuel pump cover 6 has an exhaust pipe 61 connected to the exhaust port 21.

[0029] In use, compared with the prior art which only has one air inlet, this utility model, through the arrangement of a first valve core 4, a second valve core 5, and a second air inlet 15, with the first air inlet 14 and the second air inlet 15 respectively connected to both ends of the irregularly shaped oil tank, can simultaneously discharge the gas in both ends of the irregularly shaped oil tank, leaving sufficient space for the auxiliary pump and reducing the safety hazards caused by insufficient space. In use, the two ends of the irregularly shaped oil tank are vented through the first air inlet 14 and the second air inlet 15 respectively. Under normal conditions, the first diaphragm 42 and the second diaphragm 52 remain open due to their own gravity, and the gas entering through the first air inlet 14... The gas can enter the first valve chamber 11 from the second valve chamber 12 through the connecting hole 13 and be discharged from the exhaust port 21. At the same time, the gas entering from the second air inlet 15 can enter the first valve chamber 11 and be discharged from the exhaust port 21. When the fuel in the tank reaches the closing height or the vehicle tilts during driving, the first diaphragm 42 and the second diaphragm 52 move upward due to the buoyancy and the elastic force of the spring, respectively closing the exhaust port 21 and the connecting hole 13, thus isolating the fuel and preventing it from entering the first valve chamber 11 and the second valve chamber 12 from the first air inlet 14 and the second air inlet 15 and then overflowing from the exhaust port 21.

Claims

1. A dual-purpose tipping valve mechanism, comprising a first valve core, a valve body, and an upper valve cover, wherein the upper valve cover is disposed on the upper end of the valve body and has an exhaust port, and the lower end of the valve body has a first air inlet, the first valve core being slidably disposed between the valve body and the upper valve cover and capable of opening and closing the exhaust port, characterized in that: The valve body includes a first valve chamber and a second valve chamber, which are connected by a connecting hole. The first valve core is located in the first valve chamber, and a second valve core is slidably disposed in the second valve chamber. The second valve core can open and close the connecting hole. A second air inlet is provided near the lower end of the first valve chamber.

2. The dual-purpose tipping valve mechanism according to claim 1, characterized in that: The first valve core includes a first diaphragm frame that is slidably disposed within the upper valve cover. The first diaphragm frame is provided with a first diaphragm, which is capable of opening and closing the exhaust port. The upper valve cover is provided with a limiting member.

3. The dual-purpose tipping valve mechanism according to claim 2, characterized in that: The upper outer wall of the limiting member is symmetrically provided with at least two sets of limiting grooves, and the inner side of the first diaphragm frame is provided with a limiting block corresponding to the limiting groove. The limiting block can move back and forth along the limiting groove.

4. The dual-purpose tipping valve mechanism according to claim 3, characterized in that: The lower end of the second valve chamber is provided with a lower valve cover, and the lower valve cover is provided with a number of air holes communicating with the second valve chamber.

5. A dual-purpose tipping valve mechanism according to claim 4, characterized in that: The second valve core includes a second diaphragm frame slidably disposed in the second valve cavity, a second diaphragm is disposed on the second diaphragm frame, the second diaphragm is capable of opening and closing the connection hole, a second spring mounting cavity is formed between the lower valve cover and the second diaphragm frame, and a second spring is disposed in the second spring mounting cavity.

6. A dual-purpose tipping valve mechanism according to any one of claims 1-5, characterized in that: At least two mounting blocks are provided opposite each other on the upper valve cover. Each mounting block has a slot and an elastic locking block is provided on the inner wall of the slot. A corresponding insert extends upward from the upper end of the valve body. The insert has a slot and can be inserted into the slot, causing the elastic locking block to lock into the slot.

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