Oil tank door opening and closing electromagnetic valve

Abstract

The utility model belongs to the field of electromagnetic valves, and particularly relates to an oil tank door switch electromagnetic valve which comprises a magnet used for attracting a door, a lining, a valve body with a valve nozzle at the upper end, a coil, a movable iron core, a static iron core and a sealing ring. A movable channel is arranged in the valve body, a surrounding coil is arranged between the lining and the valve body, the static iron core is fixedly connected to the bottom of the movable channel, and the upper end of the static iron core is magnetically connected with the movable iron core. The movable iron core abuts against the inner side wall of the movable channel, the side wall of the movable iron core is provided with three layers of wave grooves which are evenly arranged up and down, and movable sealing rings are arranged among the wave grooves in a surrounding mode. The sealing ring is in sealing connection with the inner side wall of the movable channel. In the moving process of the movable iron core, the connecting degree of the valve nozzle and the iron core is improved through the sealing rings on the wave grooves, the multiple sets of sealing rings play a better leakage-proof effect, due to the limiting effect of the wave grooves, the sealing rings can be stably located between the wave grooves and are not prone to falling off, and therefore the sealing performance of the electromagnetic valve is improved.

Description

Technical Field

[0001] The utility model belongs to the field of electromagnetic valves, in particular to an oil tank door switch electromagnetic valve. Background Art

[0002] In the fuel tank door switch system, the solenoid valve is a key control element responsible for accurately controlling the opening and closing of the fuel tank door. However, in the traditional fuel tank door switch solenoid valve design, the joint between the valve mouth and the iron core is often loose. This looseness may be caused by factors such as manufacturing tolerances, material wear, or deformation during long-term use. Due to the looseness of the joint between the valve mouth and the iron core, oil and gas leakage will occur during the fuel tank door opening and closing process, which not only reduces the sealing performance of the fuel tank, but also may pollute the environment. In addition, this looseness may also affect the working stability of the solenoid valve, increase the probability of failure, and thus affect the reliability and durability of the entire fuel tank door switch system.

[0003] Therefore, in order to solve the problem of loose joints between the valve mouth and the iron core in the traditional fuel tank door switch solenoid valve and improve the sealing performance of the fuel tank and the working stability of the solenoid valve, this patent proposes a new type of fuel tank door switch solenoid valve design. This design optimizes the structure and docking method of the valve mouth and the iron core to achieve a tighter docking, thereby preventing oil and gas leakage and improving system performance. Utility Model Content

[0004] The utility model aims to provide a fuel tank door switch solenoid valve, aiming to solve the above problems.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a fuel tank door switch solenoid valve for adsorbing a door magnet, including a bushing, a valve body with a valve mouth at the upper end, a coil, a moving iron core, a static iron core and a sealing ring. A movable channel is provided in the valve body, a surrounding coil is provided between the bushing and the valve body, the static iron core is fixedly connected to the bottom of the movable channel, and the upper end of the static iron core is magnetically connected to the moving iron core. The moving iron core abuts against the inner side wall of the movable channel, and the side wall of the moving iron core is provided with three layers of wave grooves evenly arranged up and down, and a movable sealing ring surrounds the wave grooves; the sealing ring is sealed and connected to the inner side wall of the movable channel.

[0006] Furthermore, a limiting boss is extended from the top of the static iron core to the surroundings, and a concave cavity is provided at a corresponding position of the movable channel, and the limiting boss is embedded in the concave cavity and clamped therewith.

[0007] Furthermore, one end of the moving iron core is magnetically connected to the static iron core, and the other end passes through the movable channel outward, and the other end extends to both ends to form a limiting cover body, and the diameter of the limiting cover body is larger than the movable channel.

[0008] Furthermore, an embedding groove is provided at the upper end of the valve body, one end of a return spring is connected to the bottom end of the limiting cover body, and the other end is connected to the embedding groove.

[0009] Furthermore, two groups of reset springs are provided, and two groups of corresponding embedded grooves are provided, and the two groups of reset springs are respectively located at the left end and the right end of the limiting cover body.

[0010] Furthermore, a first connection portion extends inwardly from the valve mouth, a second connection portion extends outwardly from the bottom end of the moving iron core, and the second connection portion is located at the upper end of the wave groove, and the first connection portion is limit-connected to the second connection portion.

[0011] Furthermore, a coil frame is provided between the bushing and the valve body, and multiple layers of coils are transversely wrapped around the coil frame; an electric wire is sequentially extended into the bushing and the coil frame, and forms an electrical connection with the coil.

[0012] Furthermore, the height of the coil is lower than the height of the static iron core.

[0013] The above one or more technical solutions in the fuel tank door switch solenoid valve provided by the embodiment of the utility model have at least the following technical effects:

[0014] In this design, the coil is energized to make the static iron core magnetic. The end of the static iron core close to the moving iron core is attracted to the moving iron core, and the moving iron core drops rapidly. The door magnet adsorbed by the other end is affected by the magnetic force, connected to the moving iron core and pressed down by force, thus locking the door. When the coil is de-energized, the static iron core loses its magnetism, the moving iron core loosens, and the door magnet loses its connection, thus opening the door. While the moving iron core is moving, the sealing ring on the wave groove is used to improve the connection between the valve mouth and the iron core. Multiple sets of sealing rings have a better anti-leakage effect, and due to the limiting effect of the wave groove, the sealing ring can be stably located between the wave grooves and is not easy to fall off, thereby improving the sealing performance of the solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 This is a structural diagram of the fuel tank door switch solenoid valve provided in an embodiment of the utility model.

[0017] Figure 2 A front view of the fuel tank door switch solenoid valve provided in an embodiment of the utility model.

[0018] Explanation of main figure marks: 100, bushing; 110, valve body; 120, coil; 130, moving iron core; 140, sealing ring; 150, wave groove; 160, limiting boss; 170, concave cavity; 180, limiting cover; 190, embedded groove; 200, return spring; 210, first connecting part; 220, second connecting part; 230, coil frame; 240, current-carrying wire; 250, static iron core. DETAILED DESCRIPTION

[0019] The following describes the embodiments of the present invention in detail. Figures 1-2 , wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Figures 1-2 The described embodiments are exemplary and are intended to be used to explain the embodiments of the present invention, but should not be construed as limiting the present invention.

[0020] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0022] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0023] In the embodiment of the utility model, this case provides a fuel tank door switch solenoid valve for adsorbing door magnets, including a bushing 100, a valve body 110 with a valve mouth at the upper end, a coil 120, a moving iron core 130, a static iron core 250 and a sealing ring 140. A movable channel is provided in the valve body 110, a surrounding coil 120 is provided between the bushing 100 and the valve body 110, the static iron core 250 is fixedly connected to the bottom of the movable channel, and the upper end of the static iron core 250 is magnetically connected to the moving iron core 130. The moving iron core 130 abuts against the inner side wall of the movable channel, and the side wall of the moving iron core 130 is provided with three layers of wave grooves 150 evenly arranged up and down, and a movable sealing ring 140 surrounds the wave grooves 150; the sealing ring 140 is sealed and connected to the inner side wall of the movable channel.

[0024] Specifically, the coil 120 is energized to cause the static iron core 250 to generate magnetism, and one end of the static iron core 250 close to the moving iron core 130 is attracted to the moving iron core 130, and the moving iron core 130 drops rapidly. The door magnet adsorbed by the other end is affected by the magnetic force, magnetically connected to the moving iron core 130 and pressed downward by force, thereby locking the door. When the coil 120 is de-energized, the static iron core 250 loses its magnetism, the moving iron core 130 loosens, and the door magnet loses connection, thereby opening the door. While the moving iron core 130 is moving, the sealing ring 140 on the wave groove 150 is used to improve the connection between the valve mouth and the iron core. Multiple sets of sealing rings 140 have a better leak-proof effect, and due to the limiting effect of the wave groove 150, the sealing ring 140 can be stably located between the wave grooves 150 and is not easy to fall off, thereby improving the sealing performance of the solenoid valve.

[0025] In another embodiment of the utility model, a limiting boss 160 is extended from the top of the static iron core 250 to the surrounding, and a concave cavity 170 is provided at a corresponding position of the movable channel, and the limiting boss 160 is embedded in the concave cavity 170 and clamped therewith. Specifically, by providing a limiting boss 160 at the top of the static iron core 250 and providing a concave cavity 170 at a corresponding position in the movable channel, the position of the static iron core 250 in the movable channel is more fixed. This structure can prevent the static iron core 250 from shaking or shifting when the solenoid valve is working, thereby improving the overall structural stability of the solenoid valve. In addition, the joint between the valve mouth and the iron core in the traditional fuel tank door switch solenoid valve is not tight, and the cooperation of the limiting boss 160 and the concave cavity 170 can guide the moving iron core 130 to be more accurately connected to the static iron core 250, thereby solving the problem of the loose joint between the valve mouth and the iron core.

[0026] In another embodiment of the utility model, one end of the moving iron core 130 is magnetically connected to the static iron core 250, and the other end passes through the movable channel outward, and the other end extends to both ends to form a limiting cover body 180, and the diameter of the limiting cover body 180 is larger than the movable channel.

[0027] In another embodiment of the utility model, the upper end of the valve body 110 is provided with an embedded groove 190, one end of a return spring 200 is connected to the bottom end of the limit cover 180, and the other end is connected to the embedded groove 190. There are two groups of return springs 200, corresponding to the two groups of embedded grooves 190, and the two groups of return springs 200 are respectively located at the left end and the right end of the limit cover 180. Specifically, by providing the return spring 200, the moving iron core 130 can quickly return to the original position after closing or opening. The two ends of the return spring 200 are respectively connected to the limit cover 180 and the embedded groove 190 of the valve body 110. When the solenoid valve is working, the limit cover 180 will be moved by the magnetic force, and the return spring 200 will be compressed or stretched; when the solenoid valve stops working, the restoring force of the return spring 200 will push the limit cover 180 to quickly return to the initial position, thereby ensuring the accurate and rapid response of the solenoid valve.

[0028] In another embodiment of the utility model, the valve mouth extends inwardly to form a first connection part 210, and the bottom end of the moving iron core 130 extends outwardly to form a second connection part 220, and the second connection part 220 is located at the upper end of the wave groove 150, and the first connection part 210 is limitedly connected with the second connection part 220. Specifically, by providing the first connection part 210 and the second connection part 220, and realizing a limited connection between the two, it is ensured that the moving iron core 130 will not be separated from the valve body 110, and the sealing part of the wave groove 150 will not be affected when the second connection part 220 abuts against the first connection part 210, which can ensure that the connection between the valve mouth and the moving iron core 130 is tighter. This structural design effectively solves the problem of loose connection between the valve mouth and the iron core in the traditional solenoid valve, thereby improving the sealing performance and working reliability of the solenoid valve.

[0029] In another embodiment of the utility model, a coil frame 230 is disposed between the bushing 100 and the valve body 110, and the coil frame 230 is laterally surrounded by multiple layers of coils 120. An electric wire 240 extends into the bushing 100 and the coil frame 230 in turn, and forms an electrical connection with the coil 120.

[0030] In another embodiment of the utility model, the height of the coil 120 is lower than the height of the static iron core 250, ensuring that the magnetic field generated by the coil 120 acts entirely on the static iron core 250, preventing the magnetic field generated by the coil 120 from affecting the moving iron core 130, thereby enhancing the stability of the solenoid valve operation.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuel tank door switch solenoid valve, used for adsorbing door magnets, characterized in that: It includes a bushing, a valve body with a valve mouth at the upper end, a coil, a moving iron core, a static iron core and a sealing ring; a movable channel is provided in the valve body, the coil is arranged around the bushing and the valve body, the static iron core is fixedly connected to the bottom of the movable channel, and the upper end of the static iron core is magnetically connected to the moving iron core; the moving iron core abuts against the inner side wall of the movable channel, and the side wall of the moving iron core is provided with three layers of wave grooves evenly arranged up and down, and the movable sealing ring is surrounded between the wave grooves; the sealing ring is sealed and connected to the inner side wall of the movable channel.

2. The fuel tank door switch solenoid valve according to claim 1, characterized in that: A limiting boss is extended from the top of the static iron core to the surroundings, a concave cavity is provided at a corresponding position of the movable channel, and the limiting boss is embedded in the concave cavity and clamped therewith.

3. The fuel tank door switch solenoid valve according to claim 1, characterized in that: One end of the moving iron core is magnetically connected to the static iron core, and the other end passes through the movable channel outwardly, and the other end extends to both ends to form a limiting cover body, and the diameter of the limiting cover body is larger than the movable channel.

4. The fuel tank door switch solenoid valve according to claim 3, characterized in that: An embedding groove is arranged at the upper end of the valve body, one end of a return spring is connected to the bottom end of the limit cover body, and the other end is connected to the embedding groove.

5. The fuel tank door switch solenoid valve according to claim 4, characterized in that: The reset springs are provided in two groups, corresponding to the two groups of embedded grooves, and the two groups of reset springs are respectively located at the left end and the right end of the limiting cover body.

6. The fuel tank door switch solenoid valve according to claim 3, characterized in that: The valve mouth extends inwardly to form a first connection portion, and the bottom end of the moving iron core extends outwardly to form a second connection portion, and the second connection portion is located at the upper end of the wave groove, and the first connection portion is limitedly connected to the second connection portion.

7. The fuel tank door switch solenoid valve according to claim 1, characterized in that: A coil frame is provided between the bushing and the valve body, and multiple layers of the coil are transversely surrounded on the coil frame; an electric wire is sequentially extended into the bushing and the coil frame to form an electrical connection with the coil.

8. The fuel tank door switch solenoid valve according to any one of claims 1 to 7, characterized in that: The height of the coil is lower than that of the static iron core.

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