Solenoid valve and motorcycle

Abstract

The application relates to an electromagnetic valve and a motorcycle. The electromagnetic valve comprises a shell, an electromagnetic mechanism and a movable mechanism. The shell comprises an outer shell, a rear cover and a mounting support. The mounting support, the rear cover and the outer shell form an accommodating cavity. The electromagnetic mechanism is arranged in the accommodating cavity. The electromagnetic mechanism comprises a coil assembly and a magnetic conducting piece. The coil assembly abuts against the mounting support and the rear cover. The coil assembly is provided with a first channel. The magnetic conducting piece is embedded at one end of the first channel close to the mounting support. The magnetic conducting piece is provided with a second channel. The first channel and the second channel are communicated to form a driving channel. The coil assembly comprises a skeleton. The skeleton is provided with a first positioning groove at a port facing the mounting support. The outer side wall of the magnetic conducting piece is provided with a mounting flange embedded in the first positioning groove. A first gap A1 is arranged between the outer side wall of the mounting flange and the groove wall of the first positioning groove. The movable mechanism is movably arranged in the driving channel. The electromagnetic valve and the motorcycle have the advantages of high reliability and good stability.

Description

Technical Field

[0001] This application relates to the field of motorcycle parts technology, and in particular to a solenoid valve and a motorcycle. Background Technology

[0002] In a motorcycle engine, the solenoid valve is a core actuator. It relies on the excitation and demagnetization of the electromagnetic mechanism to drive the reciprocating motion of the moving mechanism, thereby realizing the flow of fluid or parameter adjustment. The motion stability of the solenoid valve determines the engine's operating condition control accuracy and operational reliability.

[0003] Solenoid valves generally adopt a split assembly structure, mainly composed of multiple independent sub-parts such as the housing, coil assembly, magnetic conductor, and moving mechanism. Due to the large number of sub-parts and the dispersed assembly references, the coil assembly in current assembly processes is usually only limited by its mating with the housing, lacking an independent axial and radial precision positioning structure. Affected by the machining tolerances of the parts or assembly deviations, the coil assembly is prone to axial offset or radial misalignment. On the one hand, this will lead to poor coaxiality between the coil assembly and the moving mechanism, causing the moving mechanism to jam. On the other hand, it will aggravate the vibration of the coil assembly, leading to damage. This significantly reduces the working reliability and service life of the solenoid valve, and cannot meet the high reliability and high precision operation requirements of motorcycle engines. Summary of the Invention

[0004] Therefore, it is necessary to provide a solenoid valve and a motorcycle to address the problem of easy deviation in the limit reference of the solenoid valve.

[0005] This invention provides a solenoid valve, the solenoid valve comprising: The housing includes an outer shell, a rear cover, and a mounting bracket. The mounting bracket covers one end of the outer shell, and the rear cover covers the other end of the outer shell. The mounting bracket, the rear cover, and the outer shell together form a receiving cavity. An electromagnetic mechanism is disposed in the receiving cavity. The electromagnetic mechanism includes a coil assembly and a magnetic conductor. One end of the coil assembly abuts against the mounting bracket, and the other end of the coil assembly abuts against the rear cover. The coil assembly has a first channel, and the magnetic conductor is embedded in the first channel near the end of the mounting bracket. The magnetic conductor has a second channel, and the first channel and the second channel communicate to form a driving channel. The coil assembly includes a frame and a winding. The winding is wound around the frame. The first channel is disposed in the frame. The mounting bracket has a through hole. One end of the magnetic conductor is inserted into the first channel, and the other end of the magnetic conductor passes through the through hole. The frame has a first positioning groove at the port facing the mounting bracket. The outer wall of the magnetic conductor has a mounting flange, which is embedded in the first positioning groove. A first gap A1 is provided between the outer wall of the mounting flange and the groove wall of the first positioning groove. An active mechanism is movably disposed in the drive channel.

[0006] In one embodiment, the skeleton forms a first positioning part on the outer edge of the first positioning groove, and the first positioning part abuts against the mounting bracket.

[0007] In one embodiment, the skeleton has a second positioning part on the end face near the rear cover, and the rear cover has a second positioning groove on the end face near the receiving cavity. The second positioning part is embedded in the second positioning groove, and a second gap A2 is provided between the outer side of the second positioning part and the groove wall of the second positioning groove.

[0008] In one embodiment, the frame is further provided with a third positioning part on the end face near the rear cover, and the third positioning part abuts against the end face of the rear cover.

[0009] In one embodiment, the third positioning part is configured as a cylindrical protrusion or a conical protrusion, and the third positioning part is plastically deformed by the back cover to abut against the back cover.

[0010] In one embodiment, the third positioning part includes a plurality of third positioning parts, which are disposed at circumferential intervals on the end face along the rear cover.

[0011] In one embodiment, a fifth gap A5 is provided between the coil assembly and the housing, a sixth gap A6 is provided between the outer wall of the magnetic conductor and the inner wall of the first channel, and a seventh gap A7 is provided between the movable mechanism and the inner wall of the first channel.

[0012] In one embodiment, the electromagnetic mechanism further includes a first seal and a second seal. The mounting flange has a first sealing groove on its end face facing the magnetic conductor, and the first seal is disposed in the first sealing groove. The frame has a second sealing groove on its end face facing the rear cover, and the second seal is disposed in the second sealing groove.

[0013] In one embodiment, the actuating mechanism includes a plunger, a push rod, and a buffer assembly. The plunger is movably disposed in the first channel, the push rod is movably inserted into the second channel, the plunger has an installation channel, the buffer assembly is movably disposed at one end of the installation channel facing the rear cover, and the push rod is inserted at one end of the installation channel facing the mounting bracket.

[0014] The present invention also provides a motorcycle including the solenoid valve of the above embodiments.

[0015] The aforementioned solenoid valve and motor abut against both axial ends of the coil assembly via the mounting bracket and rear cover of the housing. The magnetic guide is inserted at the front end of the coil assembly, and the rear end of the coil assembly is embedded in the rear cover, further defining the radial position of the coil assembly. This eliminates axial movement and positional misalignment of the coil assembly, effectively avoiding defects such as magnetic circuit off-center loading caused by axial displacement. Furthermore, it eliminates the need for additional independent positioning components, simplifying the assembly process and reducing cumulative tolerances from assembling multiple parts. By embedding the magnetic guide into the coil assembly, the coaxiality of the magnetic guide, coil assembly, and moving mechanism is effectively ensured, reducing the risk of magnetic leakage and movement jamming in the moving mechanism. This further improves the smoothness of the reciprocating motion of the moving mechanism and significantly enhances the long-term reliability and service life of the solenoid valve. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the solenoid valve described in an embodiment of this application.

[0017] Figure 2 This is a cross-sectional structural diagram of the solenoid valve described in an embodiment of this application.

[0018] Figure 3 This is a schematic diagram of the coil assembly of the solenoid valve described in an embodiment of this application.

[0019] Figure 4 This is a schematic diagram of the moving mechanism of the solenoid valve described in the embodiments of this application.

[0020] Icon labels: 100. Housing; 110. Outer shell; 120. Rear cover; 121. Second positioning groove; 130. Mounting bracket; 131. Through hole; 132. Mounting part; 140. Receiving cavity; 200. Electromagnetic mechanism; 210. Coil assembly; 211. Frame; 2111. First channel; 2112. First positioning groove; 2113. First positioning part; 2114. Second positioning part; 2115. Third positioning part; 2116. Second sealing groove; 212. Winding; 220. Magnetic conductor; 221. Second channel; 222. Mounting flange; 223. First sealing groove; 230. First seal; 240. Second seal; 300. Moving mechanism; 310. Plunger; 311. Mounting channel; 312. Snap ring; 320. Push rod; 321. Connecting part; 330. Buffer assembly; 331. Shock absorber; 3311. Locking part; 3312. Impact part; 332. Elastic element; A1, First gap; A2, Second gap; A5, Fifth gap; A6, Sixth gap; A7, Seventh gap. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0022] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0023] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0027] See Figure 1 and Figure 2 The diagram shows a schematic of the structure of a solenoid valve in one embodiment of the present application. The solenoid valve includes a housing 100, a solenoid mechanism 200, and a moving mechanism 300. The housing 100 includes an outer shell 110, a rear cover 120, and a mounting bracket 130. The mounting bracket 130 covers one end of the outer shell 110, and the rear cover 120 covers the other end of the outer shell 110. The mounting bracket 130, the rear cover 120, and the outer shell 110 together form a receiving cavity 140.

[0028] An electromagnetic mechanism 200 is disposed in the receiving cavity 140. The electromagnetic mechanism 200 includes a coil assembly 210 and a magnetic conductor 220. One end of the coil assembly 210 abuts against the mounting bracket 130, and the other end of the coil assembly 210 abuts against the rear cover 120. The coil assembly 210 has a first channel 2111. The magnetic conductor 220 is embedded in the first channel 2111 near the end of the mounting bracket 130. The magnetic conductor 220 has a second channel 221. The first channel 2111 and the second channel 221 communicate to form a driving channel. Specifically, the magnetic conductor 220 is the yoke of the solenoid valve, used to construct a closed magnetic circuit, reduce magnetic leakage, and enhance the electromagnetic attraction force of the electromagnetic mechanism 200.

[0029] The active mechanism 300 can be movably installed in the drive channel.

[0030] The solenoid valve described in this embodiment has an electromagnetic mechanism 200 disposed within the receiving cavity 140 of the housing 100. A movable mechanism 300 is movably disposed within the drive channel of the electromagnetic mechanism 200. When the electromagnetic mechanism 200 generates electromagnetic excitation, it drives the movable mechanism 300 to move forward against external loads. When the electromagnetic mechanism 200 is demagnetized, the movable mechanism 300 retracts backward under the action of external loads. The mounting bracket 130 and the rear cover 120 respectively abut against the axial ends of the coil assembly 210, and the magnetic guide 220 is inserted at the front end of the coil assembly 210, further defining the radial position of the coil assembly 210 and achieving bidirectional precise axial positioning of the coil assembly 210 within the receiving cavity 140. Furthermore, by directly embedding the magnetic guide 220 within the first channel 2111 of the coil assembly 210, a pre-positioned assembly structure is formed between the magnetic guide 220 and the coil assembly 210, significantly reducing the radial position error between the magnetic guide 220 and the coil assembly 210.

[0031] The solenoid valve described in this embodiment uses the mounting bracket 130 and the rear cover 120 of the housing 100 to abut against both axial ends of the coil assembly 210, eliminating the problems of axial movement and positional offset of the coil assembly 210. This effectively avoids defects such as magnetic circuit off-center loading caused by axial displacement of the coil assembly 210. Furthermore, it eliminates the need for additional independent positioning components, simplifying the assembly process and reducing the cumulative tolerances caused by assembling multiple parts. By embedding the magnetic conductor 220 into the coil assembly 210, the coaxiality of the magnetic conductor 220, the coil assembly 210, and the movable mechanism 300 is effectively ensured, reducing the risk of magnetic leakage and movement jamming of the movable mechanism 300. This further improves the smoothness of the reciprocating motion of the movable mechanism 300, significantly enhancing the long-term reliability and service life of the solenoid valve.

[0032] In one exemplary embodiment, such as Figure 1 As shown, the mounting bracket 130 extends to both sides of the housing 100 and is provided with mounting portions 132. The mounting portions 132 are provided with connecting holes. Fasteners are passed through the connecting holes and connected to the engine, thereby fixing the solenoid valve in the engine and ensuring the stability of the solenoid valve installation.

[0033] In one exemplary embodiment, such as Figure 2 As shown, the outer casing 110 is configured as a cylindrical structure, with the receiving cavity 140 extending through the cylinder. The rear cover 120 and the mounting bracket 130 are respectively installed at both ends of the outer casing 110. It should be noted that the solenoid valve has a central axis S, which is also the center line of the casing 100. The center lines of the solenoid mechanism 200 and the movable mechanism 300 both coincide with the central axis S, and the movable mechanism 300 reciprocates along the central axis S.

[0034] In some embodiments, such as Figure 2As shown, the coil assembly 210 includes a frame 211 and a winding 212. The winding 212 is wound around the outside of the frame 211. A first channel 2111 is disposed on the frame 211. The mounting bracket 130 has a through hole 131. One end of the magnetic conductor 220 is inserted into the first channel 2111, and the other end of the magnetic conductor 220 passes through the through hole 131. That is, the magnetic conductor 220 passes through both the frame 211 and the mounting bracket 130.

[0035] In this embodiment, one end of the magnetic conductor 220 is inserted into the first channel 2111 of the skeleton 211, and the other end of the magnetic conductor 220 is inserted into the through hole 131 of the mounting bracket 130. This allows the magnetic conductor 220 to serve as a common radial positioning reference for both the skeleton 211 and the mounting bracket 130. This achieves a rigid coaxiality constraint between the magnetic conductor 220, the front end of the coil assembly 210, and the mounting bracket 130. It eliminates the radial cumulative tolerance caused by the separate assembly of the skeleton 211 and the mounting bracket 130 from the assembly source. This effectively avoids defects such as magnetic circuit off-center loading, increased leakage magnetic rate, or movement jamming of the moving mechanism 300 caused by radial misalignment of the magnetic conductor 220 and the coil assembly 210. This improves the consistency and accuracy of the assembly of each part and ensures the reliability and operational stability of the solenoid valve during long-term operation.

[0036] In an optional embodiment, such as Figure 2 As shown, the frame 211 has a first positioning groove 2112 at the port facing the mounting bracket 130, and the outer wall of the magnetic conductor 220 has a mounting flange 222. The mounting flange 222 is embedded in the first positioning groove 2112, and a first gap A1 is provided between the outer wall of the mounting flange 222 and the groove wall of the first positioning groove 2112. For example, the range of the first gap A1 is 0.02mm to 0.5mm.

[0037] In this embodiment, a first positioning groove 2112 is opened at the port of the frame 211 facing the mounting bracket 130. The mounting flange 222, which is provided on the outer wall of the magnetic conductor 220, is embedded in the first positioning groove 2112. The outer wall of the mounting flange 222 and the groove wall of the first positioning groove 2112 are engaged through a first gap A1. By limiting the range of the first gap A1, the magnetic conductor 220 and the frame 211 of the coil assembly 210 are precisely positioned. On the one hand, the radial surface contact engagement with the small gap further strengthens the coaxiality constraint between the magnetic conductor 220 and the coil assembly 210, avoiding magnetic circuit defects caused by the misalignment of the magnetic conductor 220. On the other hand, the axial abutment between the mounting flange 222 and the positioning groove can precisely limit the axial installation depth of the magnetic conductor 220 inserted into the first channel 2111, ensuring the assembly consistency of the magnetic conductor 220 and the working air gap of the movable mechanism 300, and further improving the stability and long-term reliability of the solenoid valve.

[0038] In one exemplary embodiment, such as Figure 2 As shown, the first positioning groove 2112 is a circular groove, and the mounting flange 222 is a circular flange. The circular groove is connected to the second channel 221, so that when the magnetic conductor 220 is inserted into the second channel 221, the circular flange on the outside of the magnetic conductor 220 is embedded in the circular groove.

[0039] In an optional embodiment, such as Figure 2 As shown, since the first positioning groove 2112 is provided on the end face of the frame 211 facing the mounting bracket 130, the frame 211 forms a first positioning part 2113 on the outer edge of the first positioning groove 2112, and the first positioning part 2113 abuts against the mounting bracket 130. Specifically, the first positioning part 2113 is formed by protruding axially along the side of the frame 211 facing the mounting bracket 130.

[0040] In this embodiment, the frame 211 forms a first positioning part 2113 on the outer edge of the first positioning groove 2112, so that the first positioning part 2113 directly abuts against the mounting bracket 130. This achieves direct axial positioning and end face reference fit between the frame 211 and the mounting bracket 130, eliminating the reference deviation of the two separate assembly, ensuring the accuracy of the axial position of the coil assembly 210 and the mounting bracket 130, without the need for additional independent positioning structure. This simplifies the assembly process, improves the support rigidity of the front end of the coil assembly 210, effectively suppresses the vibration of the coil assembly 210 during operation, and further improves the stability and long-term reliability of the solenoid valve.

[0041] In one exemplary embodiment, the skeleton 211 and the first positioning part 2113 are integrally formed and connected.

[0042] Combination Figure 3 The diagram shows a schematic of the coil assembly 210 of a solenoid valve according to one embodiment of this application. In an optional embodiment, the frame 211 has a second positioning part 2114 on the end face near the rear cover 120, and the rear cover 120 has a second positioning groove 121 on the end face near the receiving cavity 140. The second positioning part 2114 is embedded in the second positioning groove 121, and a second gap A2 is provided between the outer side of the second positioning part 2114 and the groove wall of the second positioning groove 121. Exemplarily, the range of the second gap A2 is 0.02mm to 0.5mm.

[0043] In this embodiment, a second positioning part 2114 is provided at the rear end of the frame 211, and a second positioning groove 121 is opened on the end face of the rear cover 120. The second positioning part 2114 is embedded in the second positioning groove 121 and the outer side of the second positioning part 2114 is tightly connected to the groove wall of the second positioning groove 121. By limiting the range of the second gap A2, the radial installation position of the rear end of the coil assembly 210 is precisely defined. It cooperates with the first positioning groove 2112 at the front end of the coil assembly 210 to achieve radial positioning at both ends of the coil assembly 210. This eliminates the hidden dangers of rear end skew or radial movement that are easy to occur with single-end positioning. It effectively ensures the coaxiality of the coil assembly 210 as a whole with the magnetic conductor 220 and the moving mechanism 300, avoids magnetic circuit problems caused by radial skew of the coil assembly 210, eliminates the need for additional independent positioning structures, streamlines the assembly process, and improves the support rigidity of the rear end of the coil assembly 210. It effectively suppresses the vibration of the coil assembly 210 during operation and further improves the stability and long-term reliability of the solenoid valve.

[0044] In one exemplary embodiment, such as Figure 3 As shown, the second positioning groove 121 is a circular groove provided on the rear cover 120, and the second positioning part 2114 is a ring formed by the axial protrusion of the skeleton 211. The ring is inserted into the circular groove to limit the radial position of the rear end of the skeleton 211.

[0045] In an optional embodiment, such as Figure 2 As shown, the frame 211 is also provided with a third positioning part 2115 on the end face near the rear cover 120, and the third positioning part 2115 abuts against the end face of the rear cover 120.

[0046] In this embodiment, a third positioning part 2115 is added to the end face of the frame 211 near the rear cover 120, so that the third positioning part 2115 directly abuts against the corresponding end face of the rear cover 120, thereby achieving precise axial positioning of the rear end of the coil assembly 210. It works in conjunction with the first positioning part 2113 that abuts against the mounting bracket 130 at the front end of the frame 211 to form a bidirectional rigid axial constraint on both ends of the coil assembly 210, eliminating the hidden dangers of axial movement and installation depth deviation of the coil assembly 210, accurately ensuring the assembly consistency of the working air gap between the magnetic conductor 220 and the movable mechanism 300, and further improving the stability of the electromagnetic performance and the reliability of long-term operation of the solenoid valve.

[0047] In one exemplary embodiment, such as Figure 3 As shown, the third positioning part 2115 includes multiple parts, and the multiple third positioning parts 2115 are arranged at intervals along the circumference of the rear cover 120 on the end face, so that the force of the multiple third positioning parts 2115 is evenly distributed, and the positioning accuracy of the rear cover 120 and the frame 211 is ensured.

[0048] In one exemplary embodiment, such as Figure 3 As shown, the third positioning part 2115 is configured as a plastically deformable protruding particle. Specifically, the third positioning part 2115 is configured as a cylindrical protrusion or a conical protrusion. The third positioning part 2115 is plastically deformed by the back cover 120 so that the third positioning part 2115 abuts against the back cover 120.

[0049] During assembly of the third positioning part 2115 in this embodiment, the rear cover 120 abuts against the third positioning part 2115 to cause plastic deformation. The adaptive deformation can accurately compensate for the axial machining tolerance of the skeleton 211 and the rear cover 120, eliminate the axial assembly gap at the rear end of the coil assembly 210, avoid problems such as incomplete abutment or axial movement caused by tolerance fluctuations, and avoid stress concentration in the skeleton 211 or the rear cover 120 caused by rigid interference fitting. The deformed protruding particles can also increase the contact friction between the skeleton 211 and the rear cover 120, effectively prevent the coil assembly 210 from rotating circumferentially, and further improve the operating stability of the solenoid valve.

[0050] In an optional embodiment, such as Figure 2 As shown, a fifth gap A5 is provided between the coil assembly 210 and the outer shell 110 to achieve electrical insulation isolation between the coil assembly 210 and the outer shell 110, reserve heat dissipation buffer space for the heating of the winding 212, block the direct transmission of vibration of the outer shell 110 to the coil assembly 210, and at the same time be compatible with the machining tolerance of each part, reducing the assembly difficulty.

[0051] In an optional embodiment, such as Figure 2 As shown, a sixth gap A6 is provided between the outer side wall of the magnetic conductor 220 and the inner side wall of the first channel 2111, which provides a reasonable assembly tolerance for the insertion of the magnetic conductor 220. With the precise positioning of the front mounting flange 222 and the first positioning groove 2112, the coaxiality of the two is ensured while eliminating the internal stress generated by the hard fit between the two, thereby avoiding long-term deformation of the skeleton 211.

[0052] In an optional embodiment, such as Figure 2 As shown, a seventh gap A7 is provided between the movable mechanism 300 and the inner wall of the first channel 2111, which provides a smooth operating space for the axial reciprocating motion of the movable mechanism 300, effectively reducing the frictional resistance and wear during the movement of the movable mechanism 300, and avoiding movement jamming.

[0053] In one exemplary embodiment, the fifth gap A5, the sixth gap A6, and the seventh gap A7 range from 0.5 mm to 2 mm. In other embodiments, the first gap A1, the second gap A2, the fifth gap A5, the sixth gap A6, and the seventh gap A7 can all be limited in range according to the assembly requirements of the structure.

[0054] In an optional embodiment, such as Figure 2 and Figure 3 As shown, the electromagnetic mechanism 200 also includes a first sealing element 230 and a second sealing element 240. The mounting flange 222 has a first sealing groove 223 on its end face facing the guide magnet 220, and the first sealing element 230 is disposed in the first sealing groove 223. The frame 211 has a second sealing groove 2116 on its end face facing the rear cover 120, and the second sealing element 240 is disposed in the second sealing groove 2116. Specifically, both the first sealing groove 223 and the second sealing groove 2116 are annular grooves, and both the first sealing element 230 and the second sealing element 240 are annular seals.

[0055] This embodiment forms independent end-face sealing structures at the front and rear ends of the coil assembly 210 by opening a first sealing groove 223 in the mounting flange 222 to accommodate a first sealing element 230, and opening a second sealing groove 2116 in the end face of the frame 211 facing the rear cover 120 to accommodate a second sealing element 240. This effectively seals the assembly gap between the coil assembly 210 and the magnetic conductor 220 and the rear cover 120, preventing external moisture, dust or oil and other media from entering the receiving cavity 140, avoiding problems such as short circuits caused by moisture in the winding 212, and greatly improving the protection level and service life of the coil assembly 210.

[0056] In one exemplary embodiment, such as Figure 2 and Figure 3 As shown, the second sealing groove 2116 is disposed between the second positioning part 2114 and the third positioning part 2115, without interfering with the functions of the second positioning part 2114 and the third positioning part 2115, and has a compact layout and high space utilization.

[0057] In an optional embodiment, such as Figure 2 and Figure 4 As shown, the movable mechanism 300 includes a plunger 310, a push rod 320, and a buffer assembly 330. The plunger 310 is movably disposed in the first channel 2111, the push rod 320 is movably inserted into the second channel 221, the plunger 310 is provided with an installation channel 311, the buffer assembly 330 is movably disposed at one end of the installation channel 311 facing the rear cover 120, and the push rod 320 is inserted at one end of the installation channel 311 facing the mounting bracket 130.

[0058] In this embodiment, the plunger 310 is movably disposed in the first channel 2111 at the rear end, and the push rod 320 is movably disposed in the second channel 221 at the front end. The push rod 320 extends out of the housing 100 as an operating component to achieve power output. The buffer assembly 330 is integrated into the mounting channel 311 of the plunger 310 facing the rear cover 120, which can prevent rigid impact between the plunger 310 and the rear cover 120 during high-speed retraction, effectively reducing operating noise, minimizing component impact damage, and effectively improving the operational reliability and service life of the solenoid valve.

[0059] In an optional embodiment, such as Figure 4 As shown, the buffer assembly 330 includes a shock absorber 331 and an elastic member 332. The shock absorber 331 is movably disposed at the end of the mounting channel 311 facing the rear cover 120. One end of the elastic member 332 is connected to the shock absorber 331, and the other end of the elastic member 332 is connected to the push rod 320. Specifically, the center line of the mounting channel 311 is arranged along the central axis S.

[0060] In this embodiment, the shock absorber 331 is movably positioned at the end of the plunger 310 mounting channel 311 facing the rear cover 120. Simultaneously, the elastic element 332 is connected at both ends to the shock absorber 331 and the push rod 320, achieving a high degree of integration of the buffering function. This eliminates the need for an additional independent buffering structure within the drive channel, avoids occupying extra assembly space, ensures the compactness of the overall structure of the moving mechanism 300, and adapts to the limited installation space requirements of motorcycle engines. When the plunger 310 retracts, the elastic element 332 abuts against the rear cover 120, thereby compressing the elastic element 332 to achieve elastic buffering, eliminating rigid impact between the plunger 310 and the rear cover 120, effectively reducing the operating noise of the solenoid valve, preventing component deformation or damage caused by impact, and significantly extending the service life of the components.

[0061] In one exemplary embodiment, such as Figure 4 As shown, the mounting channel 311 has a retaining ring 312 at one end near the rear cover 120. The shock absorber 331 includes a retaining part 3311 and an impact part 3312. The impact part 3312 is located at one end of the shock absorber 331 near the rear cover 120. When the impact part 3312 is not in contact with the rear cover 120, it protrudes from the plunger 310 under the push of the elastic member 332. The retaining part 3311 abuts against the retaining ring 312. When the impact part 3312 contacts the rear cover 120, the shock absorber 331 moves relative to the plunger 310, thereby compressing the elastic member 332, so that the plunger 310 is buffered by the elastic member 332, reducing the impact force of the plunger 310 directly hitting the rear cover 120.

[0062] In one exemplary embodiment, such as Figure 4 As shown, the elastic element 332 is a spring, one end of which is connected to the integrated structure of the push rod 320 and the plunger 310, and the other end of which is connected to the shock absorber 331.

[0063] In an optional embodiment, such as Figure 4 As shown, the push rod 320 has a connecting part 321 at one end facing the plunger 310. The connecting part 321 is inserted into the mounting channel 311, and the connecting part 321 and the plunger 310 are configured to be interference-fitted.

[0064] In this embodiment, a connecting part 321 is provided at the end of the push rod 320. The connecting part 321 is inserted into the mounting channel 311 of the plunger 310 and the two are fixedly connected by an interference fit. This can realize a rigid integrated connection between the plunger 310 and the push rod 320, eliminate the axial and radial clearances generated during the assembly of the two, effectively avoid the problems of relative movement, loosening or wobble during the high-speed reciprocating motion of the moving mechanism 300, ensure the synchronization of the movement of the plunger 310 and the push rod 320, eliminate the impact noise, stroke deviation and power transmission loss caused by the connection gap, and improve the accuracy and consistency of the solenoid valve's action response.

[0065] On the other hand, this application also provides a motorcycle, including the solenoid valve and engine described in any of the above embodiments. Specifically, the solenoid valve is installed in the engine and is used to drive the engine to switch the operating mode of the intake rocker arm.

[0066] In the motorcycle described in this application embodiment, the mounting bracket 130 and rear cover 120 of the solenoid valve abut against the axial ends of the coil assembly 210, eliminating the problems of axial movement and positional offset of the coil assembly 210. This effectively avoids defects such as magnetic circuit off-center loading caused by axial displacement of the coil assembly 210. Furthermore, it eliminates the need for additional independent positioning components, simplifying the assembly process and reducing the cumulative tolerances caused by assembling multiple parts. By embedding the magnetic conductor 220 into the coil assembly 210, the coaxiality of the magnetic conductor 220, the coil assembly 210, and the movable mechanism 300 is effectively ensured, reducing the risk of magnetic leakage and movement jamming of the movable mechanism 300. This further improves the smoothness of the reciprocating motion of the movable mechanism 300, significantly enhancing the long-term reliability and service life of the solenoid valve, thereby meeting the high reliability and high precision operating requirements of the motorcycle engine.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A solenoid valve, characterized in that, The solenoid valve includes: The housing (100) includes an outer shell (110), a rear cover (120), and a mounting bracket (130). The mounting bracket (130) covers one end of the outer shell (110), and the rear cover (120) covers the other end of the outer shell (110). The mounting bracket (130), the rear cover (120), and the outer shell (110) together form a receiving cavity (140). An electromagnetic mechanism (200) is disposed in the receiving cavity (140). The electromagnetic mechanism (200) includes a coil assembly (210) and a magnetic conductor (220). One end of the coil assembly (210) abuts against the mounting bracket (130), and the other end of the coil assembly (210) abuts against the rear cover (120). The coil assembly (210) has a first channel (2111). The magnetic conductor (220) is embedded in the first channel (2111) near the end of the mounting bracket (130). The magnetic conductor (220) has a second channel (221). The first channel (2111) and the second channel (221) communicate to form a driving channel. The coil assembly (210) includes a frame (211) and a winding. (212), the winding (212) is wound around the frame (211), the first channel (2111) is disposed on the frame (211), the mounting bracket (130) is provided with a through hole (131), one end of the magnetic conductor (220) is inserted into the first channel (2111), and the other end of the magnetic conductor (220) passes through the through hole (131); the frame (211) is provided with a first positioning groove (2112) at the port facing the mounting bracket (130), the outer side wall of the magnetic conductor (220) is provided with a mounting flange (222), the mounting flange (222) is embedded in the first positioning groove (2112), and a first gap A1 is provided between the outer side wall of the mounting flange (222) and the groove wall of the first positioning groove (2112); An active mechanism (300) is movably disposed in the drive channel.

2. The solenoid valve according to claim 1, characterized in that: The frame (211) forms a first positioning part (2113) on the outer edge of the first positioning groove (2112), and the first positioning part (2113) abuts against the mounting bracket (130).

3. The solenoid valve according to claim 1, characterized in that: The frame (211) has a second positioning part (2114) on the end face near the rear cover (120), and the rear cover (120) has a second positioning groove (121) on the end face near the receiving cavity (140). The second positioning part (2114) is embedded in the second positioning groove (121), and a second gap A2 is provided between the outer side of the second positioning part (2114) and the groove wall of the second positioning groove (121).

4. The solenoid valve according to claim 1, characterized in that: The frame (211) is further provided with a third positioning part (2115) on the end face near the rear cover (120), and the third positioning part (2115) abuts against the end face of the rear cover (120).

5. The solenoid valve according to claim 4, characterized in that: The third positioning part (2115) is configured as a cylindrical protrusion or a conical protrusion. The third positioning part (2115) is plastically deformed by the rear cover (120) so that the third positioning part (2115) abuts against the rear cover (120).

6. The solenoid valve according to claim 4, characterized in that: The third positioning part (2115) includes a plurality of third positioning parts (2115), which are disposed at intervals along the circumferential direction of the rear cover (120) on the end face.

7. The solenoid valve according to claim 1, characterized in that: A fifth gap A5 is provided between the coil assembly (210) and the outer shell (110), a sixth gap A6 is provided between the outer wall of the magnetic conductor (220) and the inner wall of the first channel (2111), and a seventh gap A7 is provided between the movable mechanism (300) and the inner wall of the first channel (2111).

8. The solenoid valve according to claim 1, characterized in that: The electromagnetic mechanism (200) further includes a first sealing element (230) and a second sealing element (240). The mounting flange (222) has a first sealing groove (223) on its end face facing the magnetic conductor (220), and the first sealing element (230) is disposed in the first sealing groove (223). The frame (211) has a second sealing groove (2116) on its end face facing the rear cover (120), and the second sealing element (240) is disposed in the second sealing groove (2116).

9. The solenoid valve according to any one of claims 1-8, characterized in that: The movable mechanism (300) includes a plunger (310), a push rod (320), and a buffer assembly (330). The plunger (310) is movably disposed in the first channel (2111), the push rod (320) is movably inserted into the second channel (221), the plunger (310) is provided with an installation channel (311), the buffer assembly (330) is movably disposed at one end of the installation channel (311) facing the rear cover (120), and the push rod (320) is inserted at one end of the installation channel (311) facing the mounting bracket (130).

10. A motorcycle, characterized in that: Includes the solenoid valve as described in any one of claims 1-9.

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