Solenoid valve, solenoid valve assembly and vehicle

Abstract

The invention discloses an electromagnetic valve, an electromagnetic valve assembly and a vehicle, the electromagnetic valve comprises a valve body, a valve core assembly and a magnetic core assembly, the magnetic core assembly comprises a static iron core, a movable iron core and a movable part, the movable part is arranged on the side, away from the static iron core, of the movable iron core and can be matched with the valve core assembly, the movable iron core is provided with a connecting part, and the movable part is provided with a matching part; the movable iron core is provided with a first position, a second position and a third position in the direction close to the static iron core, when the movable iron core is driven to move from the first position to the second position, the connecting part is disengaged from the matching part, and when the movable iron core is driven to move from the second position to the third position, the connecting part is matched with the matching part so that the movable part can move along with the movable iron core. According to the electromagnetic valve, the valve opening driving action voltage of the electromagnetic valve can be reduced, the flow is larger under the condition that the unit volume is not changed, the longer stroke and larger drift diameter of the electromagnetic valve with the relative volume are achieved, the overall structure size does not need to be increased, and the cost is prevented from being greatly increased.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular, to a solenoid valve, a solenoid valve assembly, and a vehicle. Background Art

[0002] In a heat pump system of some devices such as vehicles, a solenoid valve is usually provided. The opening of the solenoid valve is controlled by a signal of a coil to conduct a flow path. If the flow rate needs to be increased, a solenoid valve with a larger diameter is usually required, and correspondingly, the driving voltage needs to be increased to increase the electromagnetic force. These methods will increase the cost and there is room for improvement. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, an object of the present invention is to provide a solenoid valve, which can achieve a design with a large flux and a small external shape and volume, and has a low cost.

[0004] The solenoid valve according to an embodiment of the first aspect of the present invention includes: a valve body, a valve cavity, a first flow channel, and a second flow channel are defined in the valve body, and the first flow channel communicates with the valve cavity; a valve core assembly, the valve core assembly is disposed in the valve cavity and is used to conduct or disconnect the first flow channel and the second flow channel; a magnetic core assembly, the magnetic core assembly is disposed on the valve body and includes a stationary iron core, a moving iron core, and a movable member, the movable member is disposed on a side of the moving iron core away from the stationary iron core and can cooperate with the valve core assembly, the moving iron core has a connecting portion, and the movable member has a mating portion. Wherein, along the direction close to the stationary iron core, the moving iron core has a first position, a second position, and a third position. In the first position, the first flow channel and the second flow channel are disconnected. In the second position and the third position, the first flow channel and the second flow channel are conducted. When the moving iron core is driven to move from the first position to the second position, the connecting portion is disengaged from the mating portion. When the moving iron core is driven to move from the second position to the third position, the connecting portion is engaged with the mating portion so that the movable member moves with the moving iron core.

[0005] The solenoid valve according to an embodiment of the present invention can reduce the driving action voltage of the solenoid valve to open the valve, so that the flow rate is larger under the condition that the unit volume remains unchanged, that is, a longer stroke and a larger flow rate of the solenoid valve with respect to the volume are realized. There is no need to increase the overall structure size, avoiding a substantial increase in cost, which is beneficial to realizing the design of a large flux and a small external shape and volume of the solenoid valve. The overall structure is simple to assemble, the action is stable and reliable, and the manufacturing cost and subsequent maintenance cost are reduced.

[0006] In some embodiments, the mating portion is away from the spool assembly relative to the connecting portion. When the moving iron core is in the first position, the connecting portion and the mating portion are arranged at an interval. When the moving iron core is in the second position and the third position, the connecting portion and the mating portion are in abutting fit. In some embodiments, in the first position, the maximum distance between the connecting portion and the mating portion is L1, and the maximum distance between the moving iron core and the static iron core is L2, where L1 ≤ 0.5L2.

[0007] In some embodiments, the moving iron core has a shaft hole, the movable member includes a movable shaft, at least a part of the movable shaft extends into the shaft hole, and the mating portion is provided on the part of the movable shaft located within the shaft hole.

[0008] In some embodiments, the connecting portion has a connecting boss, and the connecting boss extends into the shaft hole for mating with the mating portion.

[0009] In some embodiments, the connecting portion is formed in a ring shape and sleeved on the outer periphery of the movable shaft, and the movable shaft is in sliding fit with the connecting portion.

[0010] In some embodiments, the mating portion is a bushing sleeved on the movable shaft.

[0011] In some embodiments, the movable member further includes a movable body connected to the movable shaft. The movable body is connected to one end of the movable shaft and is located on the side of the connecting portion close to the spool assembly, and the movable body protrudes from the movable shaft in the radial direction of the movable shaft.

[0012] In some embodiments, the movable member further includes a gasket, and the gasket is provided at one end of the movable body facing away from the movable shaft for mating with the spool assembly.

[0013] In some embodiments, the valve body includes: a valve body; a valve seat, the valve seat is connected to one side of the valve body, the spool assembly cooperates with the valve seat to disconnect the first flow channel and the second flow channel, and the spool assembly and the valve seat are arranged at an interval to conduct the first flow channel and the second flow channel.

[0014] In some embodiments, the valve seat includes a side wall and a bottom wall, the valve seat has at least one first opening communicating with the first flow channel, a part of each first opening is located on the side wall, and another part of each first opening is located on the bottom wall.

[0015] In some embodiments, the valve body further includes: a sleeve connected to the other side of the valve body, a movable iron core movably disposed within the sleeve, and a stationary iron core mounted at one end of the sleeve away from the valve body.

[0016] In some embodiments, a first elastic member is provided between the valve core assembly and the valve seat. When the movable iron core is in the first position, the first elastic member is in a compressed state; and / or, a second elastic member is provided between the movable iron core and the stationary iron core. When the movable iron core is in the third position, the second elastic member is in a compressed state.

[0017] In some embodiments, a fixing member is further included. The fixing member includes a connecting ring and a gland. The connecting ring is disposed on the outer periphery of the valve body and is adapted to be connected to an installation carrier, and the gland presses on the valve body.

[0018] In some embodiments, an installation groove recessed inward is provided on the outer periphery of the valve body, and at least a part of the connecting ring is located within the installation groove and is fitted with a lock washer.

[0019] The solenoid valve assembly according to the second aspect embodiment of the present invention includes a coil and the solenoid valve according to the first aspect embodiment of the present invention. By adopting the above solenoid valve, it is beneficial to achieve a large flux and a small-sized design of the solenoid valve assembly. The overall structure is simple to assemble, the operation is stable and reliable, and the manufacturing cost and subsequent maintenance cost are reduced.

[0020] The vehicle according to the third aspect embodiment of the present invention includes the solenoid valve assembly according to the second aspect embodiment of the present invention. By adopting the above solenoid valve assembly, a large flux and a small-sized design of the solenoid valve are achieved, which is convenient for assembly and use in the vehicle, and at the same time, a significant increase in cost is avoided.

[0021] The additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0023] Figure 1 is a perspective view of the solenoid valve according to the embodiment of the present invention;

[0024] Figure 2 is a front view of the solenoid valve according to the embodiment of the present invention;

[0025] Figure 3 is a cross-sectional view of the installation of the solenoid valve according to the embodiment of the present invention, wherein the movable iron core is in the first position;

[0026] Figure 4 is Figure 3 an enlarged view of the circled area A;

[0027] Figure 5 is an exploded view of the magnetic core assembly according to an embodiment of the present invention;

[0028] Figure 6 is a cross-sectional view of the magnetic core assembly according to an embodiment of the present invention;

[0029] Figure 7 is a schematic diagram of a vehicle according to an embodiment of the present invention.

[0030] Reference numerals:

[0031] solenoid valve 100, solenoid valve assembly 200, vehicle 300, mounting carrier 400,

[0032] valve body 10, first flow channel 101, second flow channel 102, valve body 11, mounting groove 111, valve seat 12, side wall 121, bottom wall 122, first opening 123, sleeve 13, fixing member 14, connecting ring 141, gland 142,

[0033] spool assembly 20, spool body 21, pressure relief member 22,

[0034] magnetic core assembly 30, static iron core 31, first limiting groove 311, moving iron core 32, shaft hole 321, connecting portion 322, connecting boss 3221, second limiting groove 323, moving part 33, moving shaft 331, moving body 332, mating portion 333, gasket 334,

[0035] first elastic member 41, second elastic member 42, lock washer 43, sealing ring 44. Detailed Description of the Invention

[0036] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing 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 should not be construed as a limitation to the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0038] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0039] The following refers to Figures 1-7 Describe a solenoid valve assembly according to an embodiment of the present invention. The solenoid valve assembly can be mounted on a mounting carrier 400. The mounting carrier 400 can be a structural member on a vehicle or a structural member of an air conditioner or other heat pump system. The solenoid valve assembly includes a coil and a solenoid valve 100. The coil is disposed on the outer periphery of the solenoid valve 100, and the operation of the solenoid valve 100 is controlled by energizing and de-energizing the coil. Among them, the solenoid valve 100 and the coil can be respectively mounted on the mounting carrier 400, or the solenoid valve 100 can be mounted on the mounting carrier 400 and the coil can be mounted on the solenoid valve 100.

[0040] As Figures 1-6 shown, a solenoid valve 100 according to an embodiment of the present invention includes: a valve body 10, a valve core assembly 20, and a magnetic core assembly 30. A valve cavity, a first flow channel 101, and a second flow channel 102 are defined in the valve body 10; the valve core assembly 20 is disposed in the valve cavity, and the valve core assembly 20 is used to conduct or disconnect the first flow channel 101 and the second flow channel 102; the magnetic core assembly 30 is provided on the valve body 10, and the magnetic core assembly 30 includes a stationary iron core 31, a moving iron core 32, and a movable member 33.

[0041] Along the direction approaching the static iron core 31 , the movable iron core 32 has a first position, a second position and a third position. That is, from the first position to the second position to the third position, the distance between the movable iron core 32 and the static iron core 31 gradually decreases.

[0042] Specifically, the static iron core 31 and the moving iron core 32 are arranged relative to each other. When the coil of the solenoid valve assembly is not energized, the moving iron core 32 is in the first position, and the distance between the moving iron core 32 and the static iron core 31 is the largest; when the coil of the solenoid valve assembly is energized, the moving iron core 32 and the static iron core 31 are attracted together by magnetic attraction, and the moving iron core 31 moves toward the static iron core 31 under the action of the magnetic attraction. At this time, the moving iron core 32 can reach the second position, and continue to energize until the moving iron core 32 and the static iron core 31 are attracted together. At this time, the moving iron core 32 reaches the third position, and the distance between the moving iron core 32 and the static iron core 31 is the smallest. When the moving iron core 32 is in the first position, the first flow channel 101 and the second flow channel 102 are disconnected. At this time, the opening of the solenoid valve 100 is the smallest and can be zero. In the second position and the third position, the first flow channel 101 and the second flow channel 102 are connected. In the third position, the opening of the solenoid valve 100 is the largest. In the second position, the opening of the solenoid valve 100 is smaller than the opening of the solenoid valve 100 in the third position.

[0043] The movable part 33 is arranged on the side of the moving iron core 32 away from the static iron core 31 (such as Figure 3 The movable part 33 can cooperate with the valve core assembly 20. By arranging the movable part 33 on one side of the moving iron core 32, the size of the movable part on the magnetic core assembly 30 is increased, thereby allowing a longer movement stroke, thereby increasing the opening of the solenoid valve 100 and increasing the flow rate.

[0044] The movable iron core 32 has a connecting portion 322, and the movable component 33 has a mating portion 333. When the movable iron core 32 is driven to move from the first position to the second position, the driving force can be the magnetic attraction between the stationary iron core 31 and the movable iron core 32 after the coil is energized. At this time, the connecting portion 322 is disengaged from the mating portion 333, that is, the magnetic attraction is only needed to drive the movable magnet 32 to move. The weight of a single movable magnet 32 is relatively small compared to the weight of the movable magnet 32 and the movable component 33. Therefore, there is no need to excessively increase the magnetic attraction, and the voltage used to energize the coil also does not need to be excessively increased.

[0045] When the moving iron core 32 is driven to move from the second position to the third position, the connecting portion 322 cooperates with the mating portion 333 so that the movable member 33 moves with the moving iron core 32. It can be understood that when the moving iron core 32 is in the second position, the distance between the moving iron core 32 and the static iron core 31 is reduced compared to the first position, and the connecting portion 322 cooperates with the mating portion 333. At this time, under the action of the magnetic attraction force, the moving iron core 32 can be driven to move. Since the connecting portion 322 cooperates with the mating portion 333, the movable member 33 can move synchronously with the moving iron core 32. Since the distance between the moving iron core 32 and the static iron core 31 is reduced at this stage and the magnetic attraction force increases, there is no need to excessively increase the energization voltage of the coil.

[0046] That is to say, by providing the cooperable connecting portion 322 and mating portion 333, the stroke of the moving iron core 33 can be increased without increasing the voltage of the valve opening driving action, and the flow rate can be increased.

[0047] According to the solenoid valve 100 of the embodiment of the present invention, the valve opening driving action voltage of the solenoid valve 100 can be reduced, so that the flow rate is larger under the condition that the unit volume remains unchanged, that is, a longer stroke and a larger flow rate of the solenoid valve with a relative volume are achieved. There is no need to increase the overall structure size, avoiding a substantial increase in cost, which is beneficial to realizing the design of a large flux and a small external shape volume of the solenoid valve 100. The overall structure is simply assembled, the action is stable and reliable, and the manufacturing cost and subsequent maintenance cost are reduced.

[0048] It can be understood that when the moving iron core 32 is in the first position, the connecting portion 322 and the mating portion 333 are disengaged. When the moving iron core 32 moves to the second position, the connecting portion 322 can cooperate with the mating portion 333. Then, when the moving iron core 32 moves to the third position, the movable member 33 can be driven to move synchronously. In addition, since the movable member 33 cooperates with the valve core assembly 20, when the moving iron core 32 moves from the first position to the second position, although the connecting portion 322 does not cooperate with the mating portion 333 in place, under the action of the pressure difference and some structures that can perform actions (such as the elastic member in the valve cavity), the movable member 33 can move toward the side close to the static iron core 31, so that the first flow channel 101 and the second flow channel 102 are communicated.

[0049] In addition, it should be noted that the first flow channel 101 is located on the outer periphery of the valve cavity. The first flow channel 101 can be a part of the flow channel formed by installing the valve core assembly 20 in the valve cavity for partitioning, or a part of the flow channel defined by the structure of the valve body 10 itself.

[0050] Such as Figure 3 and Figure 4As shown, in some embodiments, the engaging portion 333 is away from the spool assembly 20 relative to the connecting portion 322. When the moving iron core 32 is in the first position, the connecting portion 322 and the engaging portion 333 are arranged at intervals, so that the connecting portion 322 and the engaging portion 333 can be disengaged. When the moving iron core 32 is in the second position and the third position, the connecting portion 322 and the engaging portion 333 are in abutting engagement, as Figure 4 shown. Since the engaging portion 333 is located above the connecting portion 322, when the moving iron core 32 is in the second position, the connecting portion 322 directly abuts against the engaging portion 333. When the moving iron core 32 continues to move upward, the engaging portion 333 is driven by the connecting portion 322, and the movable member 33 moves upward synchronously until the moving iron core 33 moves to the third position. The connecting portion 322 directly abuts against the engaging portion 333 for convenient and reliable engagement, and it is convenient for the connecting portion 322 and the engaging portion 333 to be disengaged when the moving iron core 32 moves from the second position to the first position. The overall structure is simple and convenient for manufacturing and assembly.

[0051] Of course, in the second position, the connecting portion 322 can also be in plug-in engagement or snap-fit engagement with the engaging portion 333 to improve the reliability after engagement.

[0052] As Figure 4 shown, in some embodiments, in the first position, the maximum distance between the connecting portion 322 and the engaging portion 333 is L1, that is, the distance of the first stroke in which the moving iron core 32 can be driven to move independently is L1, and the maximum distance between the moving iron core 32 and the static iron core 31 is L2, that is, the total stroke of the moving iron core 32 is L2.

[0053] Among them, if L1 is too large, the distance for the moving iron core 32 to move from the first position to the second position is too long, that is, in the first position, the distance between the moving iron core 32 and the static iron core 31 is relatively far, so a larger magnetic attraction force is required, and it is necessary to increase the number of turns of the coil or increase the current in the coil, resulting in an increase in cost. Therefore, L1 is limited to L1≤0.5L2. L1 can be equal to 0.5L2 or less than 0.5L2, thus avoiding the increase in cost.

[0054] The movement of the moving iron core 32 between the first position and the second position is regarded as the first stroke, and the movement of the moving iron core 32 between the second position and the third position is regarded as the second stroke. The first stroke is smaller than the second stroke. When the coil is energized to generate electromagnetic force and the moving iron core 32 moves upward to engage with the static iron core 31, the total stroke is larger, the electromagnetic force in the first stroke is relatively small, and the driving voltage for opening the valve in the first stroke is small. When reaching the second position, the connecting portion 322 cooperates with the mating portion 333, thereby driving the movable member 33 to move upward until the valve core assembly 20 is fully opened. Since the moving iron core 32 has two strokes, the stroke of the moving iron core 32 is longer, the through diameter is larger, and the flow rate is larger within a certain structural volume. This is conducive to reducing the driving action voltage when the solenoid valve 100 is opened, keeping the unit volume unchanged, and increasing the flow rate.

[0055] As Figure 4 shown, in some embodiments, the moving iron core 32 has a shaft hole 321, the movable member 33 includes a movable shaft 331, at least a part of the movable shaft 331 extends into the shaft hole 321, and the mating portion 333 is provided on the part of the movable shaft 331 located within the shaft hole 321. That is to say, a part of the movable member 33 extends into the shaft hole 321 of the moving iron core 32. The connecting portion 322 of the moving iron core 32 is located at the lower part of the moving iron core 32. Thus, the connecting portion 322 can both limit the mating portion 333 to prevent the movable member 33 from disengaging from the moving iron core 32, and facilitate the cooperation between the connecting portion 322 and the mating portion 333 at the second position, facilitating the movement of the moving iron core 32 to drive the movable member 33, and the assembly of the movable member 33 and the moving iron core 32 is convenient and the cooperation is reliable. Here, the shaft hole 321 can be a through hole penetrating the moving direction of the moving iron core 32, or an opening groove with one end blocked and the other end open. At this time, the movable member 33 is inserted from one end of the opening groove, and the movable member 33 can be arranged at an interval from the bottom of the opening groove.

[0056] As Figures 4-6 shown, in some embodiments, the connecting portion 322 has a connecting boss 3221, the connecting boss 3221 extends into the shaft hole 321, and the connecting boss 3221 can cooperate with the mating portion 333. That is to say, a part of the connecting portion 322 can extend into the shaft hole 321. On the one hand, both the connecting boss 3221 and the mating portion 333 are located within the shaft hole 321, and the cooperation between the connecting boss 3221 and the mating portion 333 can be more reliable; on the other hand, by controlling the size of the connecting boss 3221, it is convenient to adjust the distance between the mating portion 333 and the connecting portion 322. In addition, by providing the connecting boss 3221, the length of the connecting portion 322 in the direction of the movable shaft 331 is increased, thereby increasing the limiting effect on the movable shaft 331, reducing the probability of the movable shaft 331 shaking, and improving the stability of the overall structure movement.

[0057] As Figure 5 and Figure 6As shown, in some embodiments, the connecting portion 322 is formed in a ring shape, and the connecting portion 322 is sleeved on the outer periphery of the movable shaft 331. The movable shaft 331 is in sliding fit with the connecting portion 322. Thus, the connecting portion 322 can play a role in guiding and limiting the movement of the movable shaft 331, reducing the probability of the movable shaft 331 shaking and improving the stability of the movement of the overall structure.

[0058] Among them, when the magnetic core assembly 30 is assembled, the connecting portion 322 can be first installed on the movable member 33. The connecting portion 322 is sleeved outside the movable shaft 331, and there is a clearance fit between the two. Then, the movable member 33 with the connecting portion 322 is installed on the lower part of the main body of the movable iron core 32, and the connecting portion 322 is welded or connected to the main body of the movable iron core 32 through fasteners.

[0059] Of course, the connecting portion 322 can also be formed in a ring shape with a notch, which is convenient for the assembly of the connecting portion 322 and the movable shaft 331.

[0060] As Figure 5 shown, in some embodiments, the mating portion 333 is a bushing sleeved on the movable shaft 331, that is, the mating portion 333 can be directly sleeved on the movable shaft 331. There can be a clamping position on the movable shaft 331 so that the bushing can be clamped on the movable shaft 331. Thus, the mating portion 333 is a structure independent of the movable shaft 331, which is not only convenient for the manufacturing and forming of the movable member 33, but also more convenient for the assembly of the overall structure.

[0061] Specifically, when the magnetic core assembly 30 is assembled, the connecting portion 322 can be first installed on the movable member 33. The connecting portion 322 is sleeved outside the movable shaft 331, and there is a clearance fit between the two. Then, the bushing is sleeved on the movable shaft 331. The bushing is clamped on the outer periphery of the movable shaft 331 and is arranged at an interval from the connecting portion 322. Then, the movable member 33 with the connecting portion 322 is installed on the lower part of the main body of the movable iron core 32, and the connecting portion 322 is welded or press-fitted with interference or connected through fasteners to the main body of the movable iron core 32. The inner hole in the middle of the connecting portion 322 is loosely fitted with the movable shaft 331.

[0062] As Figures 3-6 shown, in some embodiments, the movable member 33 further includes a movable body 332. The movable body 332 is connected to one end of the movable shaft 331, and the movable body 332 is located on the side of the connecting portion 322 close to the valve core assembly 20. The movable body 332 protrudes radially from the movable shaft 331. Thus, when the movable iron core 32 is in the first position, the connecting portion 322 can support on the movable body 332. At the same time, since the position of the movable iron core 32 is fixed, the movable body 332 can be clamped between the valve core assembly 20 and the movable iron core 32. Thus, the movable member 30 can be kept stable, reducing the probability of abnormal valve opening.

[0063] It can be understood that when the movable iron core 32 moves to the second position, the connecting portion 322 is engaged with the engaging portion 333 , and at this time, the connecting portion 322 and the movable body 332 are spaced apart.

[0064] like Figure 5 As shown, the movable body 332 and the movable shaft 331 are integrally formed and are a rotating body structure. The lower end is slotted and riveted to install the sealing gasket 334, and the upper end is installed with the matching part 332. The inner hole of the matching part 332 is interference riveted or welded to the movable shaft 331.

[0065] like Figure 4 and Figure 5 As shown, in some embodiments, the movable component 33 further includes a sealing gasket 334, which is provided on a side of the movable body 332 away from the movable shaft 331 (eg, Figure 4 The sealing gasket 334 is used to cooperate with the valve core assembly 20.

[0066] Among them, the movable body 332 can be provided with a receiving groove, and the sealing gasket 334 can be snapped into the receiving groove, or fixed to the movable body 332 by bonding or the like. The sealing gasket 334 can be at least partially embedded in the receiving groove and fixed by embedding. The connection is more stable and not easy to fall off, thereby ensuring that the sealing gasket 334 of the solenoid valve 100 can still operate normally under high and low temperature conditions, which is beneficial to improving the sealing performance of the sealing gasket 334.

[0067] In some examples, the valve core assembly 20 includes a valve core body 21 and a pressure relief member 22, the pressure relief member 22 has a pressure relief channel connected to the second flow channel 102, and the pressure relief channel is also selectively connected to the valve cavity. Specifically, the sealing gasket 334 selectively abuts against the pressure relief member 22 to connect or isolate the valve cavity and the pressure relief channel.

[0068] When the solenoid valve 100 needs to close the valve, the movable body 332 is driven to move downward so that the sealing plane of the sealing gasket 334 is in interference fit with the small plane above the pressure relief part 22, thereby sealing the pressure relief part 22 and isolating the valve cavity from the pressure relief channel; when the solenoid valve 100 needs to open the valve, the movable body 332 is driven to move upward so that the sealing plane of the sealing gasket 334 is separated from the small plane above the pressure relief part 22, so that the valve cavity is connected to the pressure relief channel, thereby forming an instantaneous pressure difference relationship to realize the pressure relief function of the pressure relief part 22.

[0069] like Figure 5As shown, the movable member 33 includes a movable body 332, a movable shaft 331, a mating portion 333, and a gasket 334. The movable body 332 and the movable shaft 331 can be integrally formed. The gasket 334 is installed in the receiving groove of the movable body 332, and the mating portion 333 is installed on the movable shaft 331. This facilitates both the cooperation of the movable member 33 with the valve core assembly 20 and the moving iron core 32, and the manufacturing and forming of the movable member 33.

[0070] As Figures 1-3 shown, in some embodiments, the valve body 10 includes a valve body 11 and a valve seat 12. The valve seat 12 is connected to one side of the valve body 11. The valve core assembly 20 cooperates with the valve seat 12 to disconnect the first flow passage 101 and the second flow passage 102. The valve core assembly 20 and the valve seat 12 are arranged at intervals to conduct the first flow passage 101 and the second flow passage 102. Thus, by controlling the position of the valve core assembly 20, the conduction or disconnection of the first flow passage 101 and the second flow passage 102 is achieved.

[0071] As Figure 2 and Figure 3 shown, in some embodiments, the valve seat 12 includes a side wall 121 and a bottom wall 122. The side wall 121 is connected to the valve body 11. The valve core assembly 20 can cooperate with the bottom wall 122. The valve seat 12 has at least one first opening 123, and each first opening 123 communicates with the first flow passage 101. Wherein, a part of each first opening 123 is located on the side wall 121, and the other part of each first opening 123 is located on the bottom wall 122. Thus, the opening communicating with the first flow passage 101 extends from the side wall of the valve seat 12 to the bottom wall, which can increase the flow area and is conducive to shortening the height of the valve seat 12, thereby shortening the overall height of the solenoid valve 100, reducing costs, and meeting the design requirements of lightweight and miniaturization.

[0072] As Figure 2 and Figure 3 shown, in some embodiments, the valve body 10 further includes a sleeve 13. The sleeve 13 is connected to the other side of the valve body 11. The moving iron core 32 is movably arranged in the sleeve 13, and the static iron core 31 is installed at one end of the sleeve 13 far from the valve body 11 (such as Figure 3 shown, the upper end). The outer ring of the sleeve 13 can be assembled with a coil, and the coil is energized to generate a magnetic field. By providing the sleeve 13,

[0073] the sleeve 13 can be made of a magnetic isolation material. The sleeve 13 is of a rotary body structure, and the lower part of the sleeve 13 is fixed by brazing after clearance fit with the valve body 10.

[0074] As Figure 5 shown, the static iron core 31 is of a rotary body structure, and the lower part of the static iron core 31 is fixed by welding after interference fit with the sleeve 13.

[0075] AsFigure 3 As shown, in some embodiments, a first elastic member 41 is provided between the valve core assembly 20 and the valve seat 12. When the moving iron core 32 is in the first position, the first elastic member 41 is in a compressed state. Thus, when the moving iron core 32 moves from the first position to the second position, the first elastic member 41 can drive the valve core assembly 20 to move through its elastic force, and the first elastic member 41 can play a role in assisting in opening the valve. Among them, the first elastic member 41 can be a metal spring, which has high strength and a long service life.

[0076] As Figure 3 shown, in some embodiments, a second elastic member 42 is provided between the moving iron core 32 and the static iron core 31. When the moving iron core 32 is in the third position, the second elastic member 42 is in a compressed state. As Figure 6 shown, a first limiting groove 311 is provided on the lower side of the static iron core 31, and a second limiting groove 323 is provided on the upper side of the moving iron core 32. The two ends of the second elastic member 42 are respectively installed in the first limiting groove 311 and the second limiting groove 323, thereby realizing the limitation of the second elastic member 42. When the electromagnetic force on the moving iron core 32 is removed, under the elastic force of the second elastic member 42, the moving iron core 32 can quickly move from the third position to the first position, improving the response speed. Among them, the second elastic member 42 can be a metal spring, which has high strength and a long service life.

[0077] As Figure 5 shown, the moving iron core 32 is made of a magnetic conductive material, and the moving iron core 32 is of a rotary body structure. There is a second limiting groove 323 at the upper end of the moving iron core 32 and a shaft hole 321 at the lower end for installing the movable component 33. The movable component 33 is arranged at an interval from the upper end of the shaft hole 321 to facilitate the installation of the movable component 33.

[0078] As Figure 2 and Figure 3 shown, the solenoid valve 100 further includes a fixing member 14. The fixing member 14 includes a connecting ring 141 and a gland 142. The connecting ring 141 is provided on the outer periphery of the valve body 11. The connecting ring 141 can be connected to the installation carrier 400, for example, by threaded fit connection, or by means of fasteners, etc. The gland 142 is pressed on the valve body 11, thereby realizing the installation and fixation of the valve body 11.

[0079] As Figure 3As shown, in some embodiments, an installation groove 111 that recesses inward is provided on the outer periphery of the valve body 11. At least a part of the connection ring 141 is located within the installation groove 111, and the connection ring 141 and the valve body 11 are fitted with a lock washer 43. The lock washer 43 can be pre-installed in the fixing member 14. The fixing member 14 is connected to the installation carrier 400 by threads. The fixing member 14 contacts the bottom wall of the installation groove 111 of the valve body 11 through the lock washer 43, which can prevent the threads from loosening, thereby improving the stability of the solenoid valve 100 installed on the installation carrier 400.

[0080] In some specific examples, after the spool assembly 20 is assembled, it is inserted into the valve seat 12. The valve body 11 and the valve seat 12 can be connected by threaded fit and have a clearance fit at the bottom of the valve body 11 and the valve seat 12. The moving iron core 32 and the movable member 33 are installed in the sleeve 13. The lower end of the sleeve 13 is in clearance fit with the valve body 11 and then fixed by brazing. The static iron core 31 is installed at the upper end of the sleeve 13. The installation carrier 400 has an installation cavity. After the solenoid valve 100 is assembled, it is placed in the installation cavity. A second flow channel 102 is provided at the middle position of the valve seat 12. A sealing ring 44 is provided on the outer side of the valve seat 12 and is located on the outer periphery of the second flow channel 102. The valve seat 12 can be in sealing fit with the installation carrier 400 through the sealing ring 44. A sealing ring 44 is also provided on the outer side of the valve body 11. The valve body 11 can also be in sealing fit with the installation carrier 400 through the sealing ring 44, thereby isolating the first flow channel 101 and the second flow channel 102.

[0081] In addition, a positioning convex portion is provided in the installation cavity of the installation carrier 400. The bottom wall of the valve seat 12 can abut against the positioning convex portion. The outer periphery of the valve seat 12 can also have a positioning concave portion. The positioning concave portion and the positioning convex portion cooperate to realize the limit of the installation of the solenoid valve 100. The fixing member 14 is sleeved on the outer side of the valve body 11. The fixing member 14 is in threaded fit with the installation carrier 400 until the gland 142 of the fixing member 14 presses the upper end face of the valve body 11, realizing the installation and fixation of the solenoid valve 100.

[0082] Then, the coil is installed on the outer side of the solenoid valve 100. The coil is energized to drive the moving iron core to overcome the elastic force of the first elastic member 41, causing the spool assembly 20 in the valve cavity to move upward. The elastic force of the second elastic member 42 acts on the spool assembly 20, which can assist in opening the valve, thereby realizing the opening and closing of the solenoid valve 100.

[0083] Through the threaded fit between the valve body 11 and the valve seat 12, after an abnormality occurs in the internal spool assembly 20, it can be quickly disassembled, repaired, improving the repair efficiency and reducing the cost. Among them, there is a clearance guiding fit position between the bottom of the thread of the valve body 11 and the valve seat 12 to prevent the valve body 11 and the valve seat 12 from being offset due to the virtual position when locking the thread, resulting in difficulty in installing the sealing ring 44 on the outer side of the valve body 11 and sealing failure.

[0084] The solenoid valve assembly 200 according to an embodiment of the present invention includes a coil and a solenoid valve 100 according to an embodiment of the present invention. By adopting the above solenoid valve 100, it is beneficial to achieve the design of large flux and small external dimension of the solenoid valve assembly 200. The overall structure is simply assembled, the operation is stable and reliable, and the manufacturing cost and subsequent maintenance cost are reduced.

[0085] The vehicle 300 according to an embodiment of the present invention includes a solenoid valve assembly 200 according to an embodiment of the present invention. By adopting the above solenoid valve assembly 200, the design of large flux and small external dimension of the solenoid valve 100 is achieved, which is convenient for assembly and use in the vehicle 300, and at the same time, a substantial increase in cost is avoided.

[0086] Other components and operations of the vehicle 300 according to an embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here. Among them, the up-down direction, left-right direction, and front-back direction are based on the up-down direction, left-right direction, and front-back direction shown in the figure.

[0087] In the description of the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include indirect contact between the first and second features through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0088] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0089] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A solenoid valve (100), characterized in that, include: A valve body (10), wherein a valve cavity, a first flow channel (101) and a second flow channel (102) are defined in the valve body (10); a valve core assembly (20), the valve core assembly (20) being disposed in the valve cavity and being used to connect or disconnect the first flow channel (101) and the second flow channel (102); A magnetic core assembly (30), the magnetic core assembly (30) being arranged on the valve body (10) and comprising a static iron core (31), a movable iron core (32) and a movable component (33), the movable component (33) being arranged on a side of the movable iron core (32) away from the static iron core (31) and being capable of cooperating with the valve core assembly (20), the movable iron core (32) having a connecting portion (322), and the movable component (33) having a cooperating portion (333), The movable iron core (32) has a first position, a second position, and a third position in a direction close to the static iron core (31); in the first position, the first flow channel (101) and the second flow channel (102) are disconnected; in the second position and the third position, the first flow channel (101) and the second flow channel (102) are connected; When the movable iron core (32) is driven to move from the first position to the second position, the connecting portion (322) and the matching portion (333) are disengaged; when the movable iron core (32) is driven to move from the second position to the third position, the connecting portion (322) and the matching portion (333) are matched to enable the movable component (33) to move along with the movable iron core (32).

2. The solenoid valve (100) according to claim 1, characterized in that The matching portion (333) is away from the valve core assembly (20) relative to the connecting portion (322); when the moving iron core (32) is located at the first position, the connecting portion (322) and the matching portion (333) are arranged at intervals; when the moving iron core (32) is located at the second position and the third position, the connecting portion (322) and the matching portion (333) are in abutment and fit.

3. The solenoid valve (100) according to claim 2, characterized in that In the first position, the maximum distance between the connecting portion (322) and the matching portion (333) is L1, and the maximum distance between the moving iron core (32) and the static iron core (31) is L2, wherein L1≤0.5L2.

4. The solenoid valve (100) according to claim 2, characterized in that The movable iron core (32) has an axial hole (321), the movable component (33) includes a movable shaft (331), at least a portion of the movable shaft (331) extends into the axial hole (321), and the matching portion (333) is provided on the portion of the movable shaft (331) located in the axial hole (321).

5. The solenoid valve (100) according to claim 4, characterized in that The connecting portion (322) has a connecting boss (3221), and the connecting boss (3221) extends into the shaft hole (321) for cooperating with the cooperating portion (333).

6. The solenoid valve (100) according to claim 4, characterized in that The connecting portion (322) is formed in a ring shape and is sleeved on the outer periphery of the movable shaft (331), and the movable shaft (331) is slidably matched with the connecting portion (322).

7. The solenoid valve (100) according to claim 4, characterized in that The matching portion (333) is a shaft sleeve sleeved on the movable shaft (331).

8. The solenoid valve (100) according to claim 4, characterized in that The movable component (33) also includes a movable body (332), which is connected to one end of the movable shaft (331) and is located on a side of the connecting portion (322) close to the valve core assembly (20), and the movable body (332) protrudes from the movable shaft (331) in the radial direction of the movable shaft (331).

9. The solenoid valve (100) according to claim 8, characterized in that The movable component (33) further includes a sealing gasket (334), which is arranged on a side of the movable body (332) away from the movable shaft (331) and is used to cooperate with the valve core assembly (20).

10. The solenoid valve (100) according to any one of claims 1-9, characterized in that, The valve body (10) comprises: Valve body (11); A valve seat (12), the valve seat (12) is connected to one side of the valve body (11), the valve core assembly (20) cooperates with the valve seat (12) to disconnect the first flow channel (101) and the second flow channel (102), and the valve core assembly (20) and the valve seat (12) are spaced apart to conduct the first flow channel (101) and the second flow channel (102).

11. The solenoid valve (100) according to claim 10, characterized in that The valve seat (12) includes a side wall (121) and a bottom wall (122), and the valve seat (12) has at least one first opening (123) connected to the first flow channel (101), a portion of each first opening (123) is located on the side wall (121), and another portion of each first opening (123) is located on the bottom wall (122).

12. The solenoid valve (100) according to claim 10, characterized in that The valve body (10) further includes: a sleeve (13), the sleeve (13) being connected to the other side of the valve body (11), the movable iron core (32) being movably arranged in the sleeve (13), and the static iron core (31) being installed at an end of the sleeve (13) away from the valve body (11).

13. The solenoid valve (100) according to claim 10, characterized in that A first elastic member (41) is provided between the valve core assembly (20) and the valve seat (12), and when the movable iron core (32) is located at the first position, the first elastic member (41) is in a compressed state; and / or, a second elastic member (42) is provided between the movable iron core (32) and the static iron core (31), and when the movable iron core (32) is located at the third position, the second elastic member (42) is in a compressed state.

14. The solenoid valve (100) according to claim 10, wherein it further comprises a fixing member (14), the fixing member (14) includes a connecting ring (141) and a gland (142), the connecting ring (141) is arranged on the outer periphery of the valve body (11) and is adapted to be connected to the mounting carrier (400), and the gland (142) presses on the valve body (11).

15. The solenoid valve (100) according to claim 14, wherein an installation groove (111) recessed inward is provided on the outer periphery of the valve body (11), at least a part of the connecting ring (141) is located in the installation groove (111) and is cooperated with a lock washer (43).

16. A solenoid valve assembly (200), characterized in that, It includes a coil and the solenoid valve (100) according to any one of claims 1-15.

17. A vehicle (300), characterized in that, It includes the solenoid valve assembly (200) according to claim 16.

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