Solenoid valve and oil pan and vehicle

Abstract

The application provides an electromagnetic valve, an oil pan and a vehicle, and the electromagnetic valve comprises a shaft, a valve assembly and an electromagnetic driving assembly, wherein the electromagnetic valve is installed on an external member with an opening through the shaft, the valve assembly comprises a shaft sleeve sleeved on the shaft and a valve plate arranged on the shaft sleeve, a closed cavity accommodating the electromagnetic driving assembly is formed between the shaft and the shaft sleeve, the electromagnetic driving assembly comprises a winding sleeved on the shaft and a magnetic induction part arranged on the inner wall of the shaft sleeve, the magnetic force between the winding and the magnetic induction part is borne, and the shaft sleeve can drive the valve plate to rotate relative to the shaft to open and close the opening. The electromagnetic valve has the advantages that it can be directly installed on the opening part of the external member, the magnetic force between the winding and the magnetic induction part is utilized to drive the shaft sleeve to rotate around the shaft to open and close the opening of the external member, the overall structure is simple, the installation is convenient, and the electromagnetic valve has good practicability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to an electromagnetic valve. BACKGROUND

[0002] An automatic transmission is a kind of transmission device capable of automatically shifting gears according to the vehicle speed and engine speed. An oil pan is generally arranged at the bottom of the automatic transmission, which is used to store oil for hydraulic system and lubrication.

[0003] During the driving of the vehicle, long uphill, long downhill, roll, jolt and emergency braking conditions will inevitably occur. Under these conditions, the oil pan will tilt with the transmission, causing the oil in the oil pan to concentrate at the end of the oil pan that is at a lower position. This may cause the oil level in the oil pan to be lower than the oil inlet of the oil pump suction device, resulting in the suction device being empty.

[0004] In this case, the oil requirements of each action instruction of each part in the transmission will be affected, thereby affecting the performance of the transmission. In addition, short-term oil shortage in the transmission will cause the friction pair to be damaged and reduce the service life, and long-term oil shortage will directly cause the transmission to malfunction, causing economic loss. SUMMARY

[0005] Therefore, the present application aims to provide an electromagnetic valve suitable for being installed on a partition in the oil pan to concentrate the oil in the oil pan in the cavity on one side of the partition and prevent the suction device from being empty.

[0006] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0007] An electromagnetic valve comprises a shaft, a valve assembly and an electromagnetic driving assembly.

[0008] The electromagnetic valve is installed on an external member with an opening through the shaft.

[0009] The valve assembly comprises a shaft sleeve arranged on the shaft and a valve plate arranged on the shaft sleeve; a closed cavity is formed between the shaft and the shaft sleeve.

[0010] The electromagnetic driving assembly is arranged in the cavity and comprises a winding arranged on the shaft and a magnetic induction part arranged on the inner wall of the shaft sleeve.

[0011] The shaft sleeve can drive the valve plate to rotate relative to the shaft under the magnetic action force between the winding and the magnetic induction part, so as to open and close the opening.

[0012] Further, the electromagnetic valve further comprises a gravity ball and a position detection unit;

[0013] The gravity ball is hung on the shaft, and the position detection unit is used for detecting the position of the gravity ball.

[0014] The position detection unit and the winding are respectively connected with a control unit, the control unit controls the on-off of the current in the winding based on the detection signal of the position detection unit.

[0015] Further, the shaft is provided with a mounting hole, and the gravity ball and the position detection unit are mounted in the mounting hole.

[0016] The gravity ball is mounted on the shaft near the end, and the position detection unit is mounted on the outer member.

[0017] Further, the shaft and the shaft sleeve or the outer member and the shaft sleeve are provided with a return member.

[0018] During the process that the shaft sleeve drives the valve plate to switch from the opening position of opening the opening to the closing position of closing the opening, the return member stores energy; the return member releases energy and can drive the shaft sleeve to drive the valve plate to switch from the closing position to the opening position.

[0019] Further, the return member comprises two torsion springs sleeved on the shaft, and the two torsion springs are arranged near the two ends of the shaft respectively.

[0020] One end of the two torsion springs is connected with the shaft or the outer member, and the other end of the two torsion springs is connected with the shaft sleeve.

[0021] Further, the outer member is provided with a limiting part on both sides, and the limiting parts on both sides are arranged on both sides of the opening.

[0022] When the valve plate closes the opening, the valve plate abuts against the limiting parts on both sides.

[0023] Further, the magnetic induction part comprises a plurality of magnetic steels, and the plurality of magnetic steels are distributed in the inner wall of the shaft sleeve in a circumferential direction.

[0024] Compared with the prior art, the present application has the following advantages:

[0025] The electromagnetic valve can be directly installed at the opening position of the external member, and the shaft sleeve drives the valve plate to rotate around the shaft by the magnetic force between the winding and the magnetic induction part, so as to open or close the opening on the external member such as the partition plate. The electromagnetic valve has simple structure and is convenient to install. When the electromagnetic valve is installed on the partition plate in the oil pan, the weight is light, the arrangement is convenient, and the oil in the oil pan can be gathered in the cavity on one side of the partition plate, so that the problem of air suction of the oil suction device can be prevented.

[0026] In addition, by arranging the gravity ball and the position detection unit, the position of the gravity ball can be detected, and the on-off of the current in the winding can be controlled, so that the opening and closing of the valve plate can be controlled. When the electromagnetic valve is installed on the partition plate in the oil pan, the gravity ball can change the position under the conditions of uphill, downhill, bumping, tilting and sudden braking of the vehicle, so that the electromagnetic valve can be closed in time, so that the oil can be gathered in the cavity on one side of the partition plate, and the problem of air suction of the oil suction device can be effectively improved.

[0027] In addition, by arranging the return member, the valve plate can be switched from the closed position to the open position, and the valve plate can be returned. In addition, the increase or decrease of the return member can also control the opening degree of the valve plate. The return member adopts two torsional springs, which are mature standard parts and have low cost.

[0028] Meanwhile, the limiting part is arranged on the external member, and the valve plate and the limiting part abut to better close the opening. The magnetic induction part is composed of multiple magnetic steels, and the multiple magnetic steels are distributed in the inner wall of the shaft sleeve in a circumferential direction, so that the shaft sleeve can rotate smoothly around the shaft.

[0029] Another object of the present application is to provide an oil pan comprising an oil pan body, a partition member, and an electromagnetic valve as described above.

[0030] The partition member is arranged in the cavity of the oil pan body, and divides the cavity into a first cavity and a second cavity on both sides of the partition member.

[0031] The external member comprises the partition member, and the electromagnetic valve is installed on the partition member through the shaft.

[0032] Further, the opening is multiple, and each of the openings is provided with the electromagnetic valve.

[0033] The oil sump of the present application, by applying the electromagnetic valve as above, in the special working conditions such as uphill, downhill, jolt, side tilt, emergency brake and the like, the oil in the oil sump is conveniently gathered in the cavity on one side of the partition plate, and the oil suction device is prevented from sucking empty. The openings on the partition plate are provided with multiple electromagnetic valves, and the oil flows back and forth between the cavities on both sides of the partition plate in normal and smooth road conditions, and the oil is concentrated in the cavity on one side of the partition plate in special working conditions, and the problem of the oil suction device sucking empty is prevented.

[0034] Another purpose of the present application is to provide a vehicle provided with the oil sump as above.

[0035] The vehicle of the present application, by applying the oil sump as above, such as installing the oil sump at the bottom of the transmission, the oil suction device is prevented from sucking empty, the oil for lubricating the friction pair of the transmission is ensured, and the function and command oil of the transmission is ensured, and the normal operation of the vehicle is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0036] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application. The present application is not limited by the accompanying drawings. In the drawings:

[0037] Figure 1 The structure schematic view of the electromagnetic valve of the present application embodiment one;

[0038] Figure 2 The structure schematic view of the electromagnetic valve of the present application embodiment one; Figure 1 The partial sectional view of the shaft sleeve part;

[0039] Figure 3 The structure schematic view of the electromagnetic valve of the present application embodiment one installed on the external member;

[0040] Figure 4 The structure schematic view of the electromagnetic valve of the present application embodiment one installed on the external member; Figure 3 The enlarged view of A part of the structure schematic view of the electromagnetic valve of the present application embodiment one installed on the external member;

[0041] Figure 5 The structure schematic view of the oil sump of the present application embodiment two;

[0042] Figure 6 The structure schematic view of the partition plate of the present application embodiment two.

[0043] Explanation of reference signs:

[0044] 1, electromagnetic valve; 2, oil sump body; 3, cavity; 301, first cavity; 302, second cavity; 4, oil suction pipe; 5, partition piece; 501, opening; 502, limiting part;

[0045] 101, shaft; 102, shaft sleeve; 103, cavity; 104, valve plate; 105, winding; 106, magnetic induction part; 107, gravity ball; 108, position detection unit; 109, return member. DETAILED DESCRIPTION

[0046] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0047] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0048] In addition, in the description of the present application, unless otherwise explicitly limited, the terms "mounting", "connecting", "connection", "connector" should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood in conjunction with the specific circumstances.

[0049] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0050] Embodiment One

[0051] The present embodiment relates to an electromagnetic valve 1 mounted on an external member having an opening 501 to open and close the opening 501 of the external member. In the present embodiment, the external member may, for example, be a partition plate in an oil pan as described below, and the electromagnetic valve 1 of the present embodiment is simple in structure, light in weight, convenient to arrange, and can better open and close the opening 501 on the partition plate.

[0052] Based on the above design idea, an exemplary structure of the electromagnetic valve 1 of the present embodiment is as follows Figure 1 and Figure 2As shown, the electromagnetic valve 1 mainly comprises a shaft 101, a valve assembly and an electromagnetic driving assembly. The shaft 101 is rotatably installed on an outer member with an opening 501. The valve assembly comprises a shaft sleeve 102 sleeved on the shaft 101, and a valve plate 104 arranged on the shaft sleeve 102. A closed cavity 103 is formed between the shaft 101 and the shaft sleeve 102. The electromagnetic driving assembly is arranged in the cavity 103 and comprises a winding 105 sleeved on the shaft 101, and a magnetic induction part 106 arranged on the inner wall of the shaft sleeve 102. The magnetic induction part 106 is subjected to the magnetic force between the winding 105 and the magnetic induction part 106, so that the shaft sleeve 102 drives the valve plate 104 to rotate relative to the shaft 101, thereby opening or closing the opening 501.

[0053] In order to better understand the electromagnetic valve 1 of the present embodiment, the structure of the shaft 101 will be described first. The shaft 101 of the present embodiment can be a hollow shaft or a solid shaft. When the shaft 101 is a hollow shaft, a mounting hole is formed in the shaft 101, and the gravity ball 107 and the position detection unit 108 described below are both mounted in the mounting hole. When the shaft 101 is a solid shaft, the gravity ball 107 is mounted at a position close to the end of the shaft 101, and the position detection unit 108 described below is mounted on the outer member. Details can be referred to the description below.

[0054] It should be noted that the following description is based on the example that the electromagnetic valve 1 is fixed on the outer member through both ends of the shaft 101, which can better ensure the installation reliability of the electromagnetic valve 1. In addition, the electromagnetic valve 1 can also be fixed on the outer member through one end of the shaft 101.

[0055] Still referring to Figures 1 to 2 As shown, the structure of the shaft sleeve 102 will be described next. The shaft sleeve 102 is sleeve-shaped, and is sleeved on the shaft 101 described above, with both ends of the shaft 101 exposed outside the shaft sleeve 102. The gap between the shaft sleeve 102 and the shaft 101 constitutes the cavity 103 described above. Since the electromagnetic driving assembly needs to be arranged in the cavity 103, the two ends of the cavity 103 need to be sealed between the shaft 101 and the shaft sleeve 102. The sealing structure can be, for example, a rotary oil seal. The sealing structure here can refer to the sealing structure between two relatively rotatable parts in the prior structure.

[0056] The valve plate 104 in the present embodiment is two, both of which are semicircular and fixed to the outer wall of the shaft sleeve 102, and the two valve plates 104 are symmetrical about the shaft sleeve 102 to form a circle, so as to block the opening 501 of the outer member. It should be noted that the shape of the valve plate 104 here can also be other shapes, which correspond to the shape of the opening 501 and can better block the opening 501.

[0057] As a preferred embodiment, the electromagnetic valve 1 of the present embodiment further comprises a gravity ball 107 and a position detection unit 108, wherein the gravity ball 107 is hung on the shaft 101, and the position detection unit 108 is used to detect the position of the gravity ball 107.

[0058] Specifically, the gravity ball 107 can be hung on the shaft 101 through a flexible thin wire, which can be installed in the mounting hole of the shaft 101 or the position close to the end of the shaft 101, so that the gravity ball 107 can change its position under the action of gravity in special working conditions, such as uphill, downhill, bumping, tilting, etc.

[0059] Here, the position detection unit 108 can adopt a distance sensor, an angle sensor, a position sensor, etc., and here it is taken as an example that the position detection unit 108 adopts a contact sensor, and one contact sensor is arranged on each side of the gravity ball 107, so that in the above-mentioned special working conditions, the gravity ball 107 contacts any contact sensor, which can trigger the control unit described below. When the position detection unit 108 adopts other types of sensors to detect the position of the gravity ball 107, the installation mode and working principle of the position detection unit 108 can refer to the prior art.

[0060] The position detection unit 108 and the winding 105 of the present embodiment are respectively connected with a control unit, which receives the detection signal of the position detection unit 108 and is used to control the on-off of the current in the winding 105. For example, the control unit here can be a small battery switch, and when the gravity ball 107 abuts against the contact sensor, the contact sensor sends an opening signal to the battery switch to make the battery switch conduct electricity.

[0061] It should be understood that the control unit of the present embodiment can be a battery switch, and can also be an existing controller on the vehicle, so as to control the on-off of the current in the winding 105. For example, the control unit can not only control the on-off of the current, but also control the size and direction of the current according to the position of the gravity ball 107, so as to control the opening degree and rotation direction of the valve plate 104.

[0062] In the above structure, by arranging the gravity ball 107 and the position detection unit 108, the position detection unit 108 can detect the position of the gravity ball 107 and control the on-off of the current in the winding 105, so as to control the opening and closing of the opening 501. When the electromagnetic valve 1 is installed on the partition plate in the oil pan, the gravity ball 107 can change its position under the working conditions of uphill, downhill, bumping, tilting, sudden braking, etc. on the vehicle, so that the electromagnetic valve 1 which is normally in the open position can be switched to the closed position in time to close the opening 501, so that the oil can be collected in the cavity on one side of the partition plate, and the problem of oil suction device suctioning air can be effectively improved.

[0063] In order to facilitate better control of the opening of the valve plate 104, as a preferred embodiment, a return member 109 is arranged between the shaft 101 and the shaft sleeve 102 or between the external member and the shaft sleeve 102. In this embodiment, the return member 109 is arranged between the shaft 101 and the shaft sleeve 102.

[0064] In the preferred embodiment, the return member 109 includes two torsion springs arranged on the shaft 101, and the two torsion springs are arranged near the two ends of the shaft 101, respectively. One end of each of the two torsion springs is connected with the shaft 101, and the other end of each of the two torsion springs is connected with the shaft sleeve 102.

[0065] In this way, on the one hand, the position of the shaft sleeve 102 in the axial direction of the shaft 101 can be limited, which facilitates smooth sliding of the shaft sleeve 102 relative to the shaft 101. On the other hand, when the shaft sleeve 102 drives the valve plate 104 to switch from the open position of the opening 501 to the closed position of the opening 501, the two torsion springs store energy. When the two torsion springs release energy, the shaft sleeve 102 drives the valve plate 104 to switch from the closed position to the open position. It should be noted that the return member 109 can also use a torsion spring instead of two torsion springs. The torsion spring is used because it is a mature standard part, has a low cost, and facilitates rapid return of the valve plate 104.

[0066] As shown in Figure 3 and Figure 4 , the external member is a partition plate with an opening 501, and the valve is installed on the partition plate through the two ends of the shaft 101, so as to drive the valve plate 104 to rotate around the shaft 101 through the shaft sleeve 102, and open and close the opening 501. Figure 3 As shown in , the valve plate 104 is in an initial vertical state, and at this time, the valve plate 104 is in an open position. When the valve plate 104 rotates counterclockwise around the shaft 101, in order to better close the opening 501, a limiting portion 502 is arranged on each side of the external member, such as the partition plate, and the limiting portions 502 on the two sides are arranged at the two ends of the opening 501. After the valve plate 104 rotates counterclockwise, the valve plate 104 abuts against the limiting portions 502 on the two sides, so as to better close the opening 501. At this time, the valve plate 104 is in a closed position.

[0067] Still referring to Figure 3 , the left limiting portion 502 and the right limiting portion 502 are semicircular arcs as a whole, the plane where the upper surface of the left limiting portion 502 is located is coplanar with the plane where the lower surface of the right limiting portion 502 is located, and the plane passes through the center line of the shaft 101. For example Figure 3 , the upper surface of the left limiting portion 502 gradually declines from left to right, and the lower surface of the right limiting portion 502 gradually inclines from right to left.

[0068] Correspondingly, in order to improve the sealing effect, the surface of the valve plate 104 in contact with the limiting portion 502 is also a bevel, so as to ensure that the valve plate 104 can be completely attached to the limiting portion 502 in the closed position, and the contact surface of the valve plate 104 and the limiting portion 502 is increased as much as possible, and the sealing effect is effectively ensured.

[0069] As a preferred embodiment, the aforementioned magnetic induction portion 106 includes a plurality of magnetic steels, and the plurality of magnetic steels are distributed in a circumferential direction on the inner wall of the shaft sleeve 102, so as to facilitate the smooth rotation of the shaft sleeve 102 around the shaft 101. It should be noted that the position and number of the magnetic steels are not limited to three as shown in Figure 4 , and the size of the magnetic steels is not limited to Figure 2 , but the magnetic steels can be arranged only at the central position of the length direction of the shaft 101. For example, the size of the magnetic steels along the length direction of the shaft 101 can be further increased, or the magnetic steels can be divided into multiple groups, each group of magnetic steels includes three Figure 2 and Figure 4 magnetic steels as shown in , and the multiple groups of magnetic steels are arranged in a spaced manner along the length direction of the shaft 101. It should be understood that the winding 105 can be arranged at the corresponding position of the shaft 101 according to the arrangement position of the magnetic steels.

[0070] The electromagnetic valve 1 of the embodiment is installed on the partition 5 described below. During the driving process of the vehicle, when a special working condition is encountered, the position of the gravity ball 107 changes accordingly. The position detection unit 108 can send a control signal to the control unit. The control unit controls the current of the winding 105 to be turned on. The shaft sleeve 102 drives the valve plate 104 to rotate around the shaft 101. During this process, the return member 109 stores energy, and the maximum opening angle of the valve plate 104 is abutted on the limiting portion 502.

[0071] When the position of the gravity ball 107 returns, the current in the winding 105 can be controlled to be turned off, and the valve plate 104 is driven to return by the return member 109. It should be noted that during the process of switching the valve plate 104 from the open position to the closed position, the opening degree of the valve plate 104 can be adjusted by controlling the size of the current in the winding 105. If the position of the gravity ball 107 returns, the valve plate 104 can also be switched from the closed position to the open position. The current in the winding 105 can be controlled to be reversed to drive the valve plate 104 to return.

[0072] The electromagnetic valve 1 of the embodiment can utilize the magnetic force between the winding 105 and the magnetic induction portion 106 to drive the shaft sleeve 102 to rotate the valve plate 104 around the shaft 101 to open and close the hole 501 on the partition plate, and the overall structure is simple and convenient to install. The electromagnetic valve 1 is installed on the partition plate in the oil pan, and the weight is relatively light, which is convenient to arrange and beneficial to the oil in the oil pan to gather in the cavity on one side of the partition plate, thereby preventing the oil suction device from being empty.

[0073] Embodiment Two

[0074] This embodiment also relates to an oil pan, which includes an oil pan body 2, a separator 5, and a solenoid valve 1 as in Embodiment 1.

[0075] like Figure 5 and Figure 6 As shown, the separator 5 is disposed in the cavity 3 of the oil pan body 2, which divides the cavity 3 of the oil pan body 2 into a first cavity 301 and a second cavity 302 located on both sides of the separator 5.

[0076] In a preferred embodiment, the separator 5 is preferably a separator plate, which is horizontally arranged. The first cavity 301 and the second cavity 302 are placed on the upper and lower sides of the separator plate, respectively, wherein the second cavity 302 serves as an oil storage cavity. One end of the oil suction pipe 4 is inserted into the oil pan body 2 and extends through the separator plate to a position near the bottom wall of the second cavity 302. In order to achieve a better oil suction effect, the end of the oil suction pipe 4 near the bottom wall is funnel-shaped.

[0077] In this embodiment, the partition 5 is the external component in Example 1. The partition 5 is provided with multiple openings 501, and there are also multiple solenoid valves 1. The openings 501 and the solenoid valves 1 correspond one-to-one, and a solenoid valve 1 is installed at each opening 501.

[0078] For ease of arrangement, the power lines of the windings 105 of each solenoid valve 1 extend outside the cavity 103. A circuit board can be designed to connect the windings 105 of each solenoid valve 1 together in series or parallel. The circuit board can be installed outside the oil pan body 2 to connect with the existing power supply device on the vehicle, such as a battery, or a separate power supply device, such as a storage battery, to supply power to the windings 105.

[0079] In this embodiment, the oil pan, using the solenoid valve 1 from Embodiment 1, is lightweight and easy to install. Under special driving conditions such as uphill, downhill, bumpy, tilting, and sudden braking, it facilitates the collection of oil from the oil pan into the cavity on one side of the partition plate, thus preventing the oil suction device from drawing in cavities. Multiple openings 501 are provided on the partition plate, and a solenoid valve 1 is installed at each opening 501. On normal, smooth roads, this allows the oil to flow back and forth between the first cavity 301 and the second cavity 302 on both sides of the partition plate. Under special driving conditions, it can promptly concentrate the oil into the cavity on one side of the partition plate, thus preventing the oil suction device from drawing in cavities.

[0080] This embodiment also relates to a vehicle equipped with an oil pan as described above. For example, the oil pan can be installed at the bottom of the vehicle's transmission. In this embodiment, by using the oil pan described above, the problem of the oil suction device drawing in air can be effectively prevented during vehicle operation, thus effectively protecting the vehicle's transmission and ensuring normal vehicle operation.

[0081] The above merely provides the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall fall into the protection scope of the present application.

Claims

1. An electromagnetic valve characterized in that: comprising a shaft (101), a valve assembly and an electromagnetic driving assembly; the electromagnetic valve (1) is installed on an external member with an opening (501) through the shaft (101); the valve assembly comprises a shaft sleeve (102) sleeved on the shaft (101), and a valve piece (104) arranged on the shaft sleeve (102); a closed cavity (103) is formed between the shaft (101) and the shaft sleeve (102); the electromagnetic driving assembly is arranged in the cavity (103) and comprises a winding (105) sleeved on the shaft (101), and a magnetic induction part (106) arranged on the inner wall of the shaft sleeve (102); under the magnetic action force between the winding (105) and the magnetic induction part (106), the shaft sleeve (102) can drive the valve piece (104) to rotate relative to the shaft (101) to open and close the opening (501); the electromagnetic valve (1) further comprises a gravity ball (107) and a position detection unit (108); the gravity ball (107) is hung on the shaft (101), and the position detection unit (108) is used for detecting the position of the gravity ball (107); the position detection unit (108) and the winding (105) are respectively connected with a control unit, and under the detection signal of the position detection unit (108), the control unit controls the on-off of the current in the winding (105).

2. The electromagnetic valve according to claim 1, characterized in that: an installation hole is arranged in the shaft (101), and the gravity ball (107) and the position detection unit (108) are both installed in the installation hole; or, the gravity ball (107) is installed at a position close to the end of the shaft (101), and the position detection unit (108) is installed on the external member.

3. The electromagnetic valve according to claim 1, characterized in that: a return member (109) is arranged between the shaft (101) and the shaft sleeve (102) or between the external member and the shaft sleeve (102); during the process that the shaft sleeve (102) drives the valve piece (104) to switch from the opening position of opening the opening (501) to the closing position of closing the opening (501), the return member (109) stores energy; the return member (109) releases energy and can drive the shaft sleeve (102) to drive the valve piece (104) to switch from the closing position to the opening position.

4. The electromagnetic valve according to claim 3, characterized in that: the return member (109) comprises two torsional springs sleeved on the shaft (101), and the two torsional springs are arranged close to the two ends of the shaft (101) respectively; one end of each of the two torsional springs is connected with the shaft (101) or the external member, and the other end of each of the two torsional springs is connected with the shaft sleeve (102).

5. The electromagnetic valve according to claim 1, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The outer member is provided with limiting portions (502) on both sides, and the limiting portions (502) on both sides are arranged on both sides of the opening (501); When the valve plate (104) closes the opening (501), the valve plate (104) abuts against the limiting portions (502) on both sides.

6. The electromagnetic valve according to any one of claims 1-5, characterized in that: The magnetic induction portion (106) comprises a plurality of magnetic steels, and the plurality of magnetic steels are distributed in a circumferential direction on the inner wall of the shaft sleeve (102).

7. An oil pan, characterized in that: The oil pan comprises an oil pan body (2), a partition (5), and the electromagnetic valve (1) according to any one of claims 1-6; The partition (5) is arranged in a cavity (3) of the oil pan body (2) and divides the cavity (3) into a first cavity (301) and a second cavity (302) on both sides of the partition (5); The outer member comprises the partition (5), and the electromagnetic valve (1) is mounted on the partition (5) through the shaft (101).

8. The oil pan according to claim 7, characterized in that: The opening (501) is a plurality of openings arranged on the partition (5), and each opening (501) is provided with the electromagnetic valve (1).

9. A vehicle, characterized in that: The vehicle is provided with the oil pan according to claim 7 or 8.

Images