Electromagnetic valve
The electric valve in shock absorbers is stabilized by a partition plate that redirects and distributes oil flow, enhancing damping efficiency and stability by increasing feedback area during compression.
Patent Information
- Application Number
- CN202422522886.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-10-18
AI Technical Summary
In existing solenoid valves, oil directly enters the main valve core from the oil channel of the main valve seat, resulting in poor stability of the main valve and affecting the shock absorption effect of the shock absorber.
A solenoid valve is designed, including the main valve core, the main valve seat and the partition plate. The partition plate is set at the bottom of the main valve core. The oil flow path is changed through the hollow structure, which increases the feedback area and stability of the main valve core, and reduces the impact of the oil on the main valve core.
The movement stability of the main valve core and the shock absorption effect of the shock absorber are improved. Through the setting of the partition, the feedback area of the main valve core during the compression process is increased, and the feedback area is adjusted during the restoration process, which increases the restoration compression pressure ratio.
Smart Images
Figure CN223105134U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicle shock absorption devices, and more specifically, relates to a solenoid valve. Background Art
[0002] A shock absorber is an important part of an automobile suspension system. It is used to suppress the oscillation when the shock-absorbing spring rebounds after vibration and the impact from the road surface, and plays a role in attenuating the vibration of the vehicle frame and body, so as to improve the driving smoothness and handling stability of the automobile. The shock absorber is filled with oil and has two chambers, an inner chamber and an outer chamber. The oil can flow through the pores connecting the two chambers. When the wheel bumps, the piston in the shock absorber will move up and down in the sleeve, and the oil in its chamber will flow back and forth between the two chambers under the action of the reciprocating motion of the piston. The shock absorber includes a solenoid valve, and the solenoid valve controls the size of the oil passage switch to change the resistance of the oil flowing back and forth between the chambers, so as to realize the change of the damping of the shock absorber.
[0003] However, in the solenoid valve in the prior art, the oil will directly enter the main valve from the oil passage of the main valve seat, and the impact on the main valve core is relatively strong, affecting the stability of the main valve, and thus affecting the shock absorption effect of the shock absorber. Summary of the Utility Model
[0004] Aiming at the problem that the oil in the existing solenoid valve directly enters the main valve from the oil passage of the main valve seat, and the impact and feedback of the oil on the main valve core are unstable, the purpose of the solenoid valve invented by the utility model is to provide a solenoid valve, which includes: a valve sleeve provided with an installation chamber; a main valve core slidably arranged in the installation chamber; a main valve seat arranged at the bottom of the main valve core and fixedly connected to the valve sleeve to limit the axial displacement of the main valve core; wherein, the main valve seat is provided with a first oil passage; the solenoid valve further includes a separator arranged at the bottom of the main valve core, and the separator is provided with a hollowed-out part for the oil to flow through and feedback the pressure to the main valve core. Through the setting of the separator, the recovery compression ratio is increased during the recovery process of the solenoid valve working, and the feedback area is increased during the compression process of the solenoid valve.
[0005] Further, the separator is a hollowed-out plate, and the first oil passage is communicated with the installation chamber through the hollowed-out part of the hollowed-out plate.
[0006] Further, a plurality of second oil passages are arranged on the separator, and the second oil passages are formed through the hollowed-out parts on the separator, and the plurality of second oil passages are uniformly arranged on the separator.
[0007] Among them, the partition piece set in the solution of the utility model is of a hollow structure. After the oil fluid passes through the hollow part on the partition plate and contacts the main valve, the interaction force between the oil fluid and the main valve changes. Specifically, during the compression stage of the main valve core, since the partition piece is arranged on one side of the main valve and restricts the flow of the oil fluid, the main valve core can obtain a larger feedback area and is more stable during the movement process.
[0008] Further, an installation cavity is opened at the bottom of the main valve core, and the regulating valve core part is slidably arranged in the installation cavity.
[0009] Among them, the partition piece partially shields the main valve core to reduce the impact of the oil fluid entering from the first oil fluid channel on the regulating valve core part.
[0010] Further, the partition piece is located at the bottom of the regulating valve core part, and the partition piece is fixedly connected to the main valve seat. A hollow part corresponding to the regulating valve core part is arranged on the partition piece to restrict the axial movement of the regulating valve core part in the hollow part.
[0011] Further, the partition piece is a circular buffer plate arranged above the main valve seat, and the diameter of the circular buffer plate is larger than the inner diameter of the first oil fluid channel.
[0012] Further, a first convex block is arranged at the bottom of the regulating valve core part; a limiting hollow hole matched with the first convex block is also opened on the partition piece, and the first convex block can slide along the inner wall of the limiting hollow hole.
[0013] Further, the limiting hollow hole is opened in the middle of the partition piece, and a plurality of second oil fluid channels are uniformly opened around the circumference of the limiting hollow hole.
[0014] Further, the shape of the second oil fluid channel is fan-shaped or other similar shapes. Further, when the main valve core is in the compressed state, it abuts against the partition piece, specifically against the outer circumference of the partition piece. During the recovery process of the main valve core, the main valve core lifts from the partition piece, and the feedback area changes from the inner diameter area of the main valve core to the outer diameter area of the partition piece. As the feedback area decreases, the recovery compression pressure ratio can be increased.
[0015] Further, a gasket is arranged between the top end of the main valve seat and the valve sleeve. The inner diameter of the gasket is larger than the diameter of the circular buffer plate, and the thickness of the gasket is larger than the thickness of the circular buffer plate.
[0016] The technical effects and advantages of the utility model:
[0017] 1. Compared with the direct entry of oil into the main valve, on the one hand, the partition can control the oil flow and improve the movement stability of the main spool; on the other hand, the setting of the partition plate can significantly increase the feedback area during the compression process of the main spool. At the same time, during the restoration process, when the main spool lifts from the partition, the restoration feedback area changes from the inner diameter area of the main spool to the outer diameter area of the partition. As the feedback area decreases, the restoration compression pressure ratio can be increased.
[0018] 2. By providing a limiting hollow hole on the partition that cooperates with the first protrusion, when the regulating valve spool part moves axially in the installation cavity, the limiting hollow hole can guide and limit the first protrusion, enabling the first protrusion to only slide along the inner wall of the limiting hollow hole, thereby ensuring the sliding stability of the regulating valve spool part in the installation cavity and further ensuring the operation stability of the main valve.
[0019] 3. Compared with setting the partition in the first oil passage so that the partition is fixedly connected to the inner wall of the first oil passage, setting the partition above the main valve seat can improve the support and limiting effect of the partition on the regulating valve spool part. Since the diameter of the circular buffer plate is larger than the inner diameter of the first oil passage, there will be no problem that the circular buffer plate slides off the inner wall of the first oil passage and loses the limiting effect on the regulating valve spool part, thereby ensuring the operation stability of the main valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a schematic structural diagram of a solenoid valve provided by the present application;
[0021] Figure 2 is Figure 1 the axial sectional view of the solenoid valve in
[0022] Figure 3 is Figure 2 the partial enlarged view at Q in
[0023] Figure 4 is Figure 1 the exploded view of the solenoid valve in
[0024] Figure 5 is Figure 2 the schematic structural diagram of the regulating valve spool part in
[0025] Figure 6 is Figure 2 the schematic structural diagram of the partition in
[0026] In the figure:
[0027] 100, solenoid valve; 1, valve sleeve; 11, installation chamber; 2, main valve seat; 21, first hydraulic fluid passage; 3, main spool; 31, installation cavity; 32, regulating spool part; 321, first bump; 4, separator; 41, limiting hollow hole; 42, second hydraulic fluid passage; 5, gasket; 6, housing. Detailed implementation manners
[0028] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. The embodiments of the present utility model are given for the purpose of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations will be obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.
[0029] See Figure 1 , which is a solenoid valve provided by the present utility model. The solenoid valve 100 is applied to a shock absorber. In combination with Figures 1 to 6 , the solenoid valve 100 includes, for example: a valve sleeve 1, a main spool 3, a main valve seat 2, and a housing 6. Among them, the housing 6 is connected to the valve sleeve 1; the valve sleeve 1 is provided with an installation chamber 11; the main spool 3 is slidably arranged in the installation chamber 11, and the hydraulic fluid can push the main spool 3 to slide up and down along the inner wall of the installation chamber 11; the main valve seat 2 is arranged at the bottom of the main spool 3 and is fixedly connected to the valve sleeve 1 to limit the downward sliding distance of the main spool 3 in the axial direction and prevent the main spool 3 from slipping out of the installation chamber 11.
[0030] Specifically, the main valve seat 2 is provided with a first hydraulic fluid passage 21, and the hydraulic fluid can enter from the first hydraulic fluid passage 21 to push the main spool 3 to perform axial movement in the installation chamber 11. Among them, the solenoid valve further includes a separator 4 arranged at the bottom of the main spool 3. Among them, the separator 4 partially blocks the main spool 3. When the hydraulic fluid enters from the first hydraulic fluid passage 21, compared with the direct entry of the hydraulic fluid into the main valve, the separator 4 can play a role in buffering and disturbing the flow of the hydraulic fluid entering the main spool 3, reducing the flow rate and velocity of the entering hydraulic fluid, and reducing the impact of the hydraulic fluid on the main spool 3, thereby improving the stability of the main valve and further improving the shock absorption effect of the shock absorber.
[0031] It can be understood that the separator 4 can be circular, or other shapes such as long strip-shaped, as long as it can partially block the main spool 3. There is no limitation on the specific shape of the separator 4 here. The separator 4 can be embedded in the first hydraulic fluid passage 21 of the main valve seat 2, or can be clamped between the main valve seat 2 and the main spool 3, or can be arranged at other positions that can change the oil inlet cross-section of the hydraulic fluid entering the main spool 3. There is no limitation here.
[0032] Further, the separating piece 4 is a perforated plate, and the first oil passage 21 communicates with the installation chamber 11 through the perforated part of the perforated plate. When the oil enters from the first oil passage 21, it can enter the installation chamber 11 through the perforated part of the perforated plate, and push the main spool 3 to move axially in the installation chamber 11.
[0033] Further, a plurality of second oil passages 42 are formed in the separating piece 4, and the plurality of second oil passages 42 are uniformly arranged on the separating piece 4 to form the perforated part. For example, the number of the second oil passages 42 can be adjusted according to the oil inlet flow rate and flow, and there is no limit here.
[0034] It can be understood that by uniformly arranging the plurality of second oil passages 42 on the separating piece 4, the oil can uniformly enter the installation chamber 11 from the perforated part of the separating piece 4, evenly disperse the impact force of the oil on the main spool 3, and avoid uneven distribution of the impact force on the main spool 3 caused by the offset of the perforated part of the separating piece 4. The impact force received at the dense opening of the perforated part of the separating piece 4 is large, and the impact force received at the dispersed opening of the perforated part of the separating piece 4 is small, affecting the stability of the main valve.
[0035] Further, an installation cavity 31 is formed at the bottom of the main spool 3, and the regulating spool part 32 is slidably arranged in the installation cavity 31, and the regulating spool part 32 can axially slide along the inner wall of the installation cavity 31. Wherein, the separating piece 4 partially shields the regulating spool part 32. When the oil enters the installation cavity 31 at the bottom of the main spool 3, the separating piece 4 can reduce the impact of the oil on the regulating spool part 32 and ensure the sliding stability of the regulating spool part 32 in the installation cavity 31.
[0036] Further, the separating piece 4 is located at the bottom of the regulating spool part 32, and the separating piece 4 is fixedly connected to the main valve seat 2. When the regulating spool part 32 slides downward along the inner wall of the installation cavity 31, the separating piece 4 can limit the sliding distance of the regulating spool part 32 and prevent the regulating spool part 32 from disengaging from the installation cavity 31.
[0037] Further, the separating piece 4 is a circular buffer plate arranged above the main valve seat 2, and the diameter of the circular buffer plate is larger than the inner diameter of the first oil passage 21. It can be understood that compared with arranging the separating piece 4 in the first oil passage 21 and fixedly connecting the separating piece 4 to the inner wall of the first oil passage 21, arranging the separating piece 4 above the main valve seat 2 can improve the supporting and limiting effects of the separating piece 4 on the regulating spool part 32. Since the diameter of the circular buffer plate is larger than the inner diameter of the first oil passage 21, there will be no problem that the circular buffer plate slides off the inner wall of the first oil passage 21 and loses the limiting effect on the regulating spool part 32, thereby ensuring the operation stability of the main valve.
[0038] Further, a first convex block 321 is provided at the bottom of the regulating valve core part 32; a limiting hollowed-out hole 41 matching with the first convex block 321 is also formed in the separating sheet 4, and the first convex block 321 can slide along the inner wall of the limiting hollowed-out hole 41. It can be understood that by forming the limiting hollowed-out hole 41 matching with the first convex block 321 on the separating sheet 4, when the regulating valve core part 32 axially moves in the installation cavity 31, the limiting hollowed-out hole 41 can play a role in guiding and limiting the first convex block 321, so that the first convex block 321 can only slide along the inner wall of the limiting hollowed-out hole 41, thereby ensuring the sliding stability of the regulating valve core part 32 in the installation cavity 31, and further ensuring the operation stability of the main valve.
[0039] Further, the limiting hollowed-out hole 41 is formed in the middle of the separating sheet 4, and a plurality of second oil channels 42 are evenly formed around the circumference of the limiting hollowed-out hole 41, and the shape of the second oil channels 42 is fan-shaped.
[0040] For example, the separating sheet 4 is a circular buffer plate arranged above the main valve seat 2, a limiting hollowed-out hole 41 matching with the first convex block 321 is formed in the middle of the circular buffer plate, and 3 fan-shaped second oil channels 42 are evenly arranged on the periphery of the limiting hollowed-out hole 41. When the oil enters from the first oil channel 21 of the valve seat, the oil impacts the circular buffer plate first, and then enters the main valve above the circular buffer plate from the 3 fan-shaped second oil channels 42 of the circular buffer plate, pushing the main valve core 3 to axially move in the installation chamber 11 of the valve sleeve 1 and pushing the regulating valve core part 32 to axially move in the installation cavity 31 of the main valve core 3. When the regulating valve core part 32 axially moves in the installation cavity 31 of the main valve core 3, the first convex block 321 at the bottom of the regulating valve core part 32 is always located in the limiting hollowed-out hole 41 and slides along the inner wall of the limiting hollowed-out hole 41.
[0041] Further, a gasket 5 is arranged between the top end of the main valve seat 2 and the valve sleeve 1. The inner diameter of the gasket 5 is larger than the diameter of the circular buffer plate, and the thickness of the gasket 5 is larger than the thickness of the circular buffer plate. By arranging the gasket 5 between the top end of the main valve seat 2 and the valve sleeve 1, the connection stability between the main valve seat 2 and the valve sleeve 1 can be improved. By setting the inner diameter of the gasket 5 to be larger than the diameter of the circular buffer plate and the thickness of the gasket 5 to be larger than the thickness of the circular buffer plate, the circular buffer plate can be arranged in the circular opening of the gasket 5, and the circular buffer plate will not protrude above the gasket 5, so that the internal structure design of the solenoid valve is more compact.
[0042] In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and 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.
[0043] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model. Structures, devices, and operation methods not specifically described and explained in the present utility model shall be implemented by conventional means in the art without special instructions and limitations.
Claims
1. A solenoid valve, applied to a shock absorber, characterized in that, The solenoid valve (100) includes: A valve sleeve (1) provided with an installation chamber (11); A main spool valve (3) slidably arranged within the installation chamber (11); A main valve seat (2) arranged at the bottom of the main spool valve (3) and fixedly connected to the valve sleeve (1) to limit the axial displacement of the main spool valve (3); Wherein, the main valve seat (2) is provided with a first hydraulic fluid passage (21); the solenoid valve (100) further includes a separator plate (4) arranged at the bottom of the main spool valve (3). The separator plate cooperates with the main spool valve to increase the restoration compression ratio during the restoration process of the solenoid valve working, and increase the feedback area during the compression process of the solenoid valve.
2. The solenoid valve according to claim 1, characterized in that, The separator plate (4) is a perforated plate, and the first hydraulic fluid passage (21) communicates with the installation chamber (11) through the perforated part of the separator plate.
3. The solenoid valve according to claim 2, characterized in that, At least one second hydraulic fluid passage (42) is formed on the separator plate (4), and a plurality of the second hydraulic fluid passages (42) are formed by the perforated part and are uniformly arranged on the separator plate (4).
4. The solenoid valve according to claim 3, characterized in that, An installation cavity (31) is formed at the bottom of the main spool valve (3), and a regulating spool valve part (32) is arranged within the installation cavity (31); Wherein, the separator plate (4) is provided with a perforated part for the regulating spool valve part (32) to pass through. The regulating spool valve part can pass through the corresponding perforated part provided by the separator plate during the compression process; the separator plate can reduce the area of the hydraulic fluid entering the first hydraulic fluid passage (21), thereby increasing the feedback area of the hydraulic fluid to the main valve during the compression process.
5. The solenoid valve according to claim 4, characterized in that, The separator plate (4) is located at the bottom of the regulating spool valve part (32), and the separator plate (4) is fixedly connected to the main valve seat (2) to limit the reciprocating movement of the regulating spool valve part (32) in the axial direction during the working process of the solenoid valve.
6. The solenoid valve according to claim 5, characterized in that, The separator plate (4) is a circular buffer plate arranged above the main valve seat (2), and the diameter of the circular buffer plate is greater than the inner diameter of the first hydraulic fluid passage (21).
7. The solenoid valve according to claim 5, characterized in that, A first convex block (321) is arranged at the bottom of the regulating spool valve part (32); a limiting perforated hole (41) cooperating with the first convex block (321) is further formed on the separator plate (4), and the first convex block (321) can slide along the inner wall of the limiting perforated hole (41).
8. The solenoid valve according to claim 7, characterized in that, The limiting perforated hole (41) is formed in the middle of the separator plate (4), and a plurality of the second hydraulic fluid passages (42) are uniformly formed around the circumference of the limiting perforated hole (41).
9. The solenoid valve according to claim 8, characterized in that, The shape of the second hydraulic fluid passage (42) is fan-shaped.
10. The solenoid valve according to claim 6, wherein, A gasket (5) is arranged between the top end of the main valve seat (2) and the valve sleeve (1). The inner diameter of the gasket (5) is greater than the diameter of the circular buffer plate, and the thickness of the gasket (5) is greater than the thickness of the circular buffer plate.