Solenoid valve, shock absorber and vehicle

Abstract

The utility model provides an electromagnetic valve, a shock absorber and a vehicle. The electromagnetic valve comprises a pilot valve shell, a valve element cover, a magnetism isolating ring and an overflow valve shell. The pilot valve shell is provided with an installation cavity used for installing the electromagnetic coil. The valve element cover is arranged in the mounting cavity and penetrates into the electromagnetic coil. The magnetism isolating ring is arranged in the mounting cavity and is adjacent to the valve element cover. The overflow valve shell is located on the side, away from the valve element cover, of the magnetism isolating ring, and the overflow valve shell and the magnetism isolating ring form a first sealing structure. The electromagnetic valve has the advantages of being good in sealing performance and reliability.

Description

Technical Field

[0001] The utility model generally relates to the technical field of solenoid valves, and more specifically to a solenoid valve, a shock absorber and a vehicle. Background Art

[0002] At present, the sealing structure in the existing solenoid valve is arranged between the pilot valve housing and the magnetic isolation ring, which lacks a fastening effect and the sealing performance is not reliable enough. Utility Model Content

[0003] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0004] In order to at least partially solve the above problems, the first aspect of the present invention provides a solenoid valve, the solenoid valve comprising:

[0005] A pilot valve housing, wherein the pilot valve housing is configured with an installation chamber for installing an electromagnetic coil;

[0006] A valve core cover, the valve core cover is arranged in the installation chamber and penetrates into the electromagnetic coil;

[0007] A magnetic isolation ring, the magnetic isolation ring is arranged in the installation chamber and adjacent to the valve core cover;

[0008] The overflow valve housing is located on a side of the magnetic isolation ring away from the valve core cover, and the overflow valve housing and the magnetic isolation ring form a first sealing structure.

[0009] According to the solenoid valve of the first aspect of the utility model, the overflow valve housing and the magnetic isolation ring form a first sealing structure, so that the installation chamber in the pilot valve housing forms a sealing structure on the outside of the magnetic isolation ring, thereby achieving sealing before the fluid medium enters between the magnetic isolation ring and the pilot valve housing, which is beneficial to prevent medium leakage and has strong sealing reliability.

[0010] Optionally, the magnetic isolation ring has a first sealing portion, and the overflow valve housing has an overflow valve sealing portion, and one of the first sealing portion and the overflow valve sealing portion is configured as a protrusion, and the other is configured as a recessed portion cooperating with the protrusion.

[0011] Optionally, a sealing ring is provided between the overflow valve housing and the magnetic isolation ring.

[0012] Optionally, the relief valve housing and the magnetic isolation ring are fully welded.

[0013] Optionally, a second sealing structure is formed between the magnetic isolation ring and the valve core cover.

[0014] Optionally, the magnetic isolation ring has a second sealing portion, the valve core cover has a valve core cover sealing portion, and one of the second sealing portion and the valve core cover sealing portion is configured as a protrusion, and the other is configured as a recessed portion cooperating with the protrusion.

[0015] Optionally, the magnetic isolation ring is provided with a sealing groove, the peripheral side of the valve core cover is provided with a flange portion, the flange portion is embedded in the sealing groove, and the second sealing portion and the valve core cover sealing portion are located in the sealing groove.

[0016] Optionally, a vulcanized rubber layer is provided on the inner surface of the recessed portion.

[0017] Optionally, the cross-sections of the recessed portion and the raised portion are V-shaped.

[0018] Optionally, along the axial direction of the magnetic isolation ring, the height of the protrusion is not greater than the depth of the recess.

[0019] Optionally, the solenoid valve further comprises a valve core, the overflow valve housing, the magnetic isolation ring and the valve core cover structure form an active space, and the valve core is configured to move in the active space along the axial direction under the action of the magnetic field of the electromagnetic coil.

[0020] Optionally, the relief valve housing is provided with a discharge channel, a first end of the discharge channel is connected to the activity space, and a second end of the discharge channel is connected to the outer side of the relief valve housing;

[0021] In the transverse direction, the first end of the discharge passage is located on a side of the overflow valve sealing portion close to the valve core;

[0022] Along the axial direction, the second end of the discharge passage is located at a position where the relief valve housing is exposed from the pilot valve housing.

[0023] A second aspect of the utility model provides a shock absorber, comprising the solenoid valve according to the above.

[0024] The shock absorber according to the second aspect of the utility model has a solenoid valve with strong sealing reliability, which is helpful to prevent solenoid valve failure and ensure the working stability of the shock absorber.

[0025] A third aspect of the utility model provides a vehicle, comprising the shock absorber according to the above.

[0026] The vehicle according to the third aspect of the utility model has a shock absorber with stable performance and low failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0028] Figure 1 A cross-sectional view of a shock absorber according to a preferred embodiment of the utility model along the axial direction;

[0029] Figure 2 This is a cross-sectional view of a solenoid valve in a preferred embodiment of the utility model along the axial direction. At this time, the valve core moves in the axial direction toward a direction away from the overflow valve, and the impurity gas and liquid medium enters the retention cavity from the overflow valve, and the impurity gas and liquid in the extrusion cavity are discharged from the solenoid valve through the discharge channel;

[0030] Figure 3 It is a cross-sectional view of a solenoid valve in a preferred embodiment of the utility model along the axial direction, at this time, the valve core moves along the axial direction toward the direction close to the overflow valve, and the impurity gas and liquid medium enters the extrusion chamber from the retention chamber;

[0031] Figure 4 is a cross-sectional view of the valve core along the axial direction;

[0032] Figure 5 for Figure 4 an enlarged schematic diagram of part A in FIG. ; and

[0033] Figure 6 It is a cross-sectional view of the magnetic isolation ring along the axial direction.

[0034] Description of Reference Numerals

[0035] 100: Outer shell 110: Pilot valve housing

[0036] 111: Installation chamber 120: Electromagnetic coil

[0037] 130: Valve core cover 131: Valve core cover sealing part

[0038] 132: flange 133: extrusion cavity

[0039] 140: Magnetic isolation ring 141: Sealing groove

[0040] 142: Second sealing portion 143: Vulcanized rubber layer

[0041] 144: first sealing part 150: valve core

[0042] 151: Oil channel 152: Throttle valve

[0043] 160: overflow valve housing 161: top spacer

[0044] 162: discharge channel 163: liquid inlet hole

[0045] 170: Relief valve body 171: Push rod

[0046] 172: Plug 173: Through hole

[0047] 174: Fluid chamber 175: Piston

[0048] 176: Liquid outlet 164: Retention cavity

[0049] 165: Sheath 166: Relief valve seal

[0050] Z: axial direction D: transverse direction DETAILED DESCRIPTION

[0051] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.

[0052] In this document, ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of the "second component", and the term "second component" itself does not imply the existence of the "first component".

[0053] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0054] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0055] Unless otherwise stated, the numerical ranges herein include not only the entire range within its two endpoints but also include several sub-ranges contained therein.

[0056] Figure 1 A vibration absorber according to the utility model is shown. Figures 2 to 6 A solenoid valve according to the utility model is shown, wherein the solenoid valve is used for damping adjustment of a shock absorber.

[0057] Exemplarily, the shock absorber includes an outer shell 100, the solenoid valve is arranged in the outer shell 100, and the interior of the outer shell 100 is filled with a medium, the solenoid valve includes a pilot valve, a relief valve housing 160 and a relief valve body 170, the relief valve body 170 includes a push rod 171, a plug 172 and a piston 175, the piston 175 is arranged in the outer shell 100 and is movably sealed with the inner wall of the outer shell 100, and the piston 175 is sleeved to the bottom end of the relief valve housing 160 and fixed to the relief valve housing 160. The interior of the outer shell 100 is divided into two chambers by the piston 175, and the solenoid valve as a whole achieves a vibration reduction effect through the movement of the piston 175 relative to the outer shell 100.

[0058] In detail, the overflow valve housing 160 is provided with a liquid inlet hole 163 to allow the medium in the outer shell 100 to enter the overflow valve housing 160, and the piston 175 is provided with a liquid outlet hole 176, and the liquid outlet hole 176 is connected to the overflow valve housing 160. When the solenoid valve as a whole moves along the axial direction Z, the medium in the two chambers in the outer shell 100 flows through the piston 175 through the liquid inlet hole 163 and the liquid outlet hole 176, thereby slowing down the movement of the solenoid valve as a whole and achieving a vibration reduction effect.

[0059] The push rod 171 is connected to the pilot valve, and the push rod 171 is connected to the plug 172. The plug 172 is arranged in the relief valve housing 160. The pilot valve drives the push rod 171 to realize the movement of the plug 172 relative to the relief valve housing 160, thereby realizing the opening size of the liquid inlet hole 163, thereby realizing the resistance size to the medium passing through the cylinder head, and realizing the damping adjustment of the shock absorber.

[0060] In detail, the solenoid valve according to the utility model includes a pilot valve housing 110, a valve core cover 130, a magnetic isolation ring 140 and a relief valve housing 160. The pilot valve housing 110 is configured with an installation chamber 111 for installing the electromagnetic coil 120. The valve core cover 130 is arranged in the installation chamber 111 and penetrates into the electromagnetic coil 120. The magnetic isolation ring 140 is arranged in the installation chamber 111 and is arranged adjacent to the valve core cover 130. The relief valve housing 160 is located on the side of the magnetic isolation ring 140 away from the valve core cover 130, and the relief valve housing 160 and the magnetic isolation ring 140 form a first sealing structure.

[0061] According to the solenoid valve of the utility model, the overflow valve housing 160 and the magnetic isolation ring 140 form a first sealing structure, so that the installation chamber 111 in the pilot valve housing 110 forms a sealing structure on the outside of the magnetic isolation ring 140, thereby achieving sealing before the fluid medium enters between the magnetic isolation ring 140 and the pilot valve housing 110, which is beneficial to prevent medium leakage and has strong sealing reliability.

[0062] Optionally, the magnetic isolation ring 140 has a first sealing portion 144, and the overflow valve housing 160 has an overflow valve sealing portion 166. One of the first sealing portion 144 and the overflow valve sealing portion 166 is constructed as a protrusion, and the other is constructed as a recessed portion matching the protrusion, so that the first sealing structure with a concave-convex matching formed between the magnetic isolation ring 140 and the overflow valve housing 160 has good sealing performance.

[0063] As an alternative, a sealing ring is provided between the overflow valve housing 160 and the magnetic isolation ring 140 . The sealing ring may be a rubber ring, and may also realize a sealed connection between the overflow valve housing 160 and the magnetic isolation ring 140 .

[0064] Of course, the overflow valve housing 160 can also be directly connected to the magnetic isolation ring 140 by full welding, so as to have good sealing performance.

[0065] Preferably, a second sealing structure is formed between the magnetic isolation ring 140 and the valve core cover 130 to further prevent the medium from leaking into the electromagnetic coil 120 .

[0066] Optionally, the magnetic isolation ring 140 has a second sealing portion 142, and the valve core cover 130 has a valve core cover sealing portion 131. One of the second sealing portion 142 and the valve core cover sealing portion 131 is constructed as a protrusion, and the other is constructed as a recessed portion matching the protrusion, so that the second sealing structure with a concave-convex fit formed between the magnetic isolation ring 140 and the valve core cover 130 has good sealing performance.

[0067] Furthermore, the solenoid valve further includes a valve core 150, a relief valve housing 160, a magnetic isolation ring 140 and a valve core cover 130 to form an activity space, and the valve core 150 is configured to move in the activity space along the axial direction Z under the magnetic field of the electromagnetic coil 120, and the valve core 150 is fixed to the push rod 171, and the damping adjustment of the shock absorber is achieved by driving the valve core 150 by the electromagnetic coil 120. In addition, due to the sealing arrangement between the relief valve housing 160 and the magnetic isolation ring 140, the activity space is separated from the electromagnetic coil 120, further ensuring the sealing requirements of the electromagnetic coil 120.

[0068] Exemplarily, when assembling the solenoid valve, the solenoid coil 120 is first installed in the installation chamber 111, and then the valve core cover 130, the valve core 150, the magnetic isolation ring 140 and the overflow valve housing 160 are installed in sequence, so that the magnetic isolation ring 140 is sealedly connected to the valve core cover 130 and the overflow valve housing 160 respectively. Therefore, the installation of the solenoid coil 120 will not affect the sealing structure of the magnetic isolation ring 140, further ensuring the sealing stability of the solenoid valve.

[0069] Reference Figures 4 to 6, the second sealing portion 142 and the first sealing portion 144 of the magnetic isolation ring 140 are both configured as recessed portions. Specifically, the second sealing portion 142 and the first sealing portion 144 of the magnetic isolation ring 140 are configured as two annular grooves on both sides of the magnetic isolation ring 140 along the axial direction Z. The second sealing portion 142 and the first sealing portion 144 can be formed by integrally molding the magnetic isolation ring 140, such as casting or extrusion molding, which are all within the protection scope of the present utility model.

[0070] Correspondingly, the valve core cover sealing portion 131 and the overflow valve sealing portion 166 are constructed as raised portions, which realize the concave-convex fit between the valve core cover 130 and the magnetic isolation ring 140 and the concave-convex fit between the overflow valve housing 160 and the magnetic isolation ring 140, further enhancing the sealing performance.

[0071] Alternatively, if Figure 5 As shown, the magnetic isolation ring 140 is provided with a sealing groove 141, and the peripheral side of the valve core cover 130 is provided with a flange portion 132, the flange portion 132 is embedded in the sealing groove 141, and the second sealing portion 142 and the valve core cover sealing portion 131 are located in the sealing groove 141, so that the magnetic isolation ring 140 and the valve core cover 130 are further concave-convex matched, and the sealing between the valve core cover 130 and the magnetic isolation ring 140 is further enhanced.

[0072] Furthermore, a vulcanized rubber layer 143 is provided on the inner surface of the recessed portion. In other words, the inner surfaces of the second sealing portion 142 and the first sealing portion 144 are both provided with a vulcanized rubber layer 143, which not only saves the procedure of installing the rubber sealing structure but also makes the structure more stable. The vulcanized rubber layer 143 is not easy to separate from the magnetic isolation ring 140.

[0073] Optionally, the cross-sections of the concave portion and the convex portion are V-shaped. In other words, the cross-sections of the second sealing portion 142 and the valve core cover sealing portion 131 are both V-shaped, so that the magnetic isolation ring 140 and the valve core cover 130 have a double-layer sealing effect, thereby improving the sealing effect. Similarly, the cross-sections of the first sealing portion 144 and the relief valve sealing portion 166 are both V-shaped, so that the magnetic isolation ring 140 and the relief valve housing 160 have a double-layer sealing effect, thereby improving the sealing effect.

[0074] Furthermore, along the axial direction Z of the magnetic isolation ring 140, the height of the protrusion is not greater than the depth of the recessed portion, thereby preventing the protrusion from prematurely contacting the inner bottom of the recessed portion during assembly, thereby causing insufficient compression of the vulcanized rubber layer 143, thereby ensuring the sealing between the magnetic isolation ring 140 and the valve core cover 130, and between the magnetic isolation ring 140 and the overflow valve housing 160.

[0075] Reference Figures 2 to 4, a top spacer 161 is provided on the top of the overflow valve housing 160, and the top spacer 161, the magnetic isolation ring 140 and the valve core cover 130 form an activity space, and the activity space of the valve core 150 is divided by the valve core 150 to form an extrusion chamber 133 close to the electromagnetic coil 120 and a retention chamber 164 away from the electromagnetic coil 120. A sheath 165 is penetrated in the middle of the top spacer 161 for passing the push rod 171, and a liquid accumulation chamber 174 is formed between the plug 172 and the overflow valve housing 160, and the plug 172 is provided with a through hole 173 to guide part of the medium in the overflow valve housing 160 into the liquid accumulation chamber 174, and the gap between the sheath 165 and the top spacer 161 is matched, so that the medium in the liquid accumulation chamber 174 can enter the retention chamber 164.

[0076] Reference Figure 2 When the valve core 150 moves along the axial direction Z toward the electromagnetic coil 120, the volume of the retention chamber 164 gradually increases, thereby forming a negative pressure, so that part of the medium in the overflow valve housing 160 is introduced into the liquid accumulation chamber 174, and then enters the retention chamber 164, reducing the resistance to the movement of the valve core 150 and facilitating the control of the movement stroke of the valve core 150.

[0077] Further, the relief valve housing 160 is provided with a discharge channel 162, a first end of which is connected to the extrusion chamber 133, and a second end of which is connected to the outer side of the relief valve housing 160. The valve core 150 is provided with an oil passage 151, which penetrates the valve core 150 along the axial direction Z, so that the retention chamber 164 and the extrusion chamber 133 are connected, so that the medium in the retention chamber 164 can enter the extrusion chamber 133 through the oil passage 151. The valve core 150 is provided with a throttle valve 152, which is arranged at one end of the oil passage 151 connected to the extrusion chamber 133, so as to prevent the medium in the extrusion chamber 133 from returning to the retention chamber 164.

[0078] Reference Figure 3 When the valve core 150 moves in the axial direction Z in a direction away from the electromagnetic coil 120, the volume of the extrusion chamber 133 increases, while the volume of the retention chamber 164 decreases. Under the action of the pressure difference, the medium in the retention chamber 164 enters the extrusion chamber 133 through the oil passage 151. When the valve core 150 moves in the axial direction Z in a direction close to the electromagnetic coil 120, the medium (gas-liquid mixture) in the extrusion chamber 133 enters the discharge channel 162 through the gap between the valve core 150 and the valve core cover 130 and the magnetic isolation ring 140, and is discharged out of the relief valve housing 160.

[0079] The movable space of the valve core 150 adopts the medium flow mode, mainly to balance the pressure of the extrusion chamber 133 and the retention chamber 164, so that the movement resistance of the valve core 150 is smaller.

[0080] Furthermore, along the transverse direction D, the first end of the discharge channel 162 is located on the side of the second recessed portion close to the valve core 150. Along the axial direction Z, the second end of the discharge channel 162 is located at a position where the overflow valve housing 160 is exposed from the pilot valve housing 110, so that the medium flow channel does not pass through the inner wall of the pilot valve housing 110, thereby preventing the medium from penetrating into the electromagnetic coil 120 through the magnetic isolation ring 140 and the inner wall of the pilot valve housing 110, further ensuring the sealing of the electromagnetic coil 120.

[0081] The utility model also provides a shock absorber, comprising the electromagnetic valve according to the above-mentioned embodiment. According to the shock absorber of the utility model, the electromagnetic valve has strong sealing reliability, which is conducive to preventing electromagnetic valve failure and ensuring the working stability of the shock absorber.

[0082] The utility model also provides a vehicle, comprising the shock absorber according to the above. The vehicle according to the third aspect of the utility model has a shock absorber with stable performance and low failure rate.

[0083] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" appearing in this article may indicate that one component is directly attached to another component, or that one component is attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0084] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of the protection claimed by the utility model.

Claims

1. A solenoid valve, characterized in that: The solenoid valve comprises: A pilot valve housing, wherein the pilot valve housing is configured with an installation chamber for installing an electromagnetic coil; A valve core cover, the valve core cover is arranged in the installation chamber and penetrates into the electromagnetic coil; A magnetic isolation ring, the magnetic isolation ring is arranged in the installation chamber and adjacent to the valve core cover; The overflow valve housing is located on a side of the magnetic isolation ring away from the valve core cover, and the overflow valve housing and the magnetic isolation ring form a first sealing structure.

2. The solenoid valve according to claim 1, characterized in that: The magnetic isolation ring has a first sealing portion, and the relief valve housing has a relief valve sealing portion. One of the first sealing portion and the relief valve sealing portion is configured as a protrusion, and the other is configured as a recessed portion cooperating with the protrusion.

3. The solenoid valve according to claim 1, characterized in that: A sealing ring is arranged between the overflow valve housing and the magnetic isolation ring.

4. The solenoid valve according to claim 1, characterized in that: The overflow valve housing and the magnetic isolation ring are fully welded.

5. The solenoid valve according to claim 2, characterized in that: A second sealing structure is formed between the magnetic isolation ring and the valve core cover.

6. The solenoid valve according to claim 5, characterized in that: The magnetic isolation ring has a second sealing portion, and the valve core cover has a valve core cover sealing portion. One of the second sealing portion and the valve core cover sealing portion is configured as a protrusion, and the other is configured as a recessed portion that cooperates with the protrusion.

7. The solenoid valve according to claim 6, characterized in that: The magnetic isolation ring is provided with a sealing groove, and the circumferential side of the valve core cover is provided with a flange portion, the flange portion is embedded in the sealing groove, and the second sealing portion and the valve core cover sealing portion are located in the sealing groove.

8. The solenoid valve according to claim 6, characterized in that: The inner surface of the recessed portion is provided with a vulcanized rubber layer.

9. The solenoid valve according to claim 6, characterized in that: The cross sections of the concave portion and the convex portion are V-shaped.

10. The solenoid valve according to claim 6, characterized in that: Along the axial direction of the magnetic isolation ring, the height of the protrusion is not greater than the depth of the recess.

11. The solenoid valve according to claim 6, characterized in that: The solenoid valve further comprises a valve core, the overflow valve housing, the magnetic isolation ring and the valve core cover structure form an activity space, and the valve core is configured to move in the activity space along the axial direction under the action of the magnetic field of the electromagnetic coil.

12. The solenoid valve according to claim 11, characterized in that: The relief valve housing is provided with a discharge passage, a first end of the discharge passage is connected to the activity space, and a second end of the discharge passage is connected to the outer side of the relief valve housing; In the transverse direction, the first end of the discharge passage is located on a side of the overflow valve sealing portion close to the valve core; Along the axial direction, the second end of the discharge passage is located at a position where the relief valve housing is exposed from the pilot valve housing.

13. A shock absorber, characterized in that: Comprising a solenoid valve according to any one of claims 1 to 12.

14. A vehicle, characterized in that: Comprising a vibration damper according to claim 13.

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