Electromagnetic damping regulating valve

Abstract

The utility model provides an electromagnetic damping regulating valve which has a better damping characteristic, particularly has a better damping characteristic during high-speed vibration, and relates to the technical field of automobile vibration reduction. An electromagnetic damping regulating valve comprises a valve body, a valve cavity is formed in the valve body, and a valve seat dividing the valve cavity into an upper valve body and a lower valve body is arranged in the valve cavity. An oil inlet throttling channel, a first oil outlet throttling channel and a second oil outlet throttling channel are arranged in the valve seat, one end of the oil inlet throttling channel and one end of the second oil outlet throttling channel are communicated with the lower valve cavity, the other end of the oil inlet throttling channel and the other end of the second oil outlet throttling channel are communicated with the upper valve cavity, and one end of the first oil outlet throttling channel is communicated with the lower valve cavity. An inner flow channel is further arranged in the upper valve cavity, one end of the inner flow channel is communicated with the other end of the first oil outlet throttling channel, the other end of the inner flow channel is communicated with the upper valve cavity, and an electromagnetic valve element assembly for controlling on-off of the inner flow channel is arranged in the inner flow channel. According to the utility model, the chassis can be better ensured to have better damping performance when the automobile vibrates at a high speed, and the driving comfort of the automobile can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile vibration reduction, in particular to an electromagnetic damping regulating valve. Background Art

[0002] The active shock absorption system is an advanced shock absorption system that uses an electronic, hydraulic or pneumatic control system. It can actively sense and respond to the vehicle's suspension movement and external conditions to achieve active adjustment and control of the vehicle's shock absorption effect. The main shock absorption system is mainly composed of a shock absorption cylinder, an oil storage tank, a control unit, a sensor unit, a hydraulic pump, and a damping regulating valve for adjusting the damping of the shock absorption cylinder. For details, please refer to an active hydraulic lifting control system disclosed in application publication number CN115450968A. The active shock absorption system mainly changes the damping characteristics of the system by actively adjusting the damping of the damping regulating valve, thereby achieving active adjustment and control of the vehicle's shock absorption effect. Compared with the passive shock absorption system, the active shock absorption system has higher flexibility and suspension control capabilities, and can provide better driving stability and driving comfort.

[0003] Key performance indicators such as vehicle comfort and handling during operation are mainly reflected by the damping force characteristics of the vibration reduction system. Specifically, when the suspension moves up and down at a high speed, greater damping is required, and when the suspension moves up and down at a low speed, less damping is required. However, in practice, when the suspension moves up and down at a high speed, if the damping is too large, the system's shock absorption effect is poor, and the vehicle's operating comfort will become worse. The commonly used damping regulating valve is a solenoid valve, which adjusts the damping size by changing the opening of the damping regulating valve. The current damping regulating valve only has one oil inlet damping channel and one oil outlet damping channel. Its damping characteristics are poor when the system vibrates at high speed, affecting the driving comfort of the car. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an electromagnetic damping regulating valve with better damping characteristics, especially better damping characteristics under high-speed vibration.

[0005] The utility model solves the technical problem by adopting the following technical solution: an electromagnetic damping regulating valve, comprising a valve body, a valve cavity provided in the valve body, a valve seat provided in the valve cavity for dividing the valve cavity into an upper valve cavity and a lower valve cavity, a first oil port for inlet and outlet fluids communicating with the upper valve cavity, and a second oil port for inlet and outlet fluids communicating with the lower valve cavity;

[0006] An oil inlet throttling channel, a first oil outlet throttling channel, and a second oil outlet throttling channel are provided in the valve seat. One end of the oil inlet throttling channel and the second oil outlet throttling channel are respectively communicated with the lower valve cavity, and the other end is respectively communicated with the upper valve cavity. One end of the first oil outlet throttling channel is communicated with the lower valve cavity.

[0007] An inner flow channel is further provided in the upper valve cavity, one end of the inner flow channel is communicated with the other end of the first oil outlet throttling channel, and the other end is communicated with the upper valve cavity, and an electromagnetic valve core assembly for controlling its on and off is provided in the inner flow channel;

[0008] The valve seat is provided with an oil inlet one-way valve assembly that seals with the oil inlet throttling channel so that the oil inlet throttling channel can be opened in one direction when the fluid flows from the upper valve chamber to the lower valve chamber. The valve seat is also provided with a first oil outlet one-way valve assembly that seals with the first oil outlet throttling channel so that the first oil outlet throttling channel can be opened in one direction when the fluid flows from the lower valve chamber to the upper valve chamber. The valve seat is provided with a first oil outlet one-way valve assembly that seals with the first oil outlet throttling channel so that the first oil outlet throttling channel can be opened in one direction when the fluid flows from the lower valve chamber to the upper valve chamber. The valve seat is provided with a first oil outlet one-way valve assembly that seals with the first oil outlet throttling channel so that the first oil outlet throttling channel can be opened in one direction when the fluid flows from the lower valve chamber to the upper valve chamber. The valve seat is provided with a first oil outlet one-way valve assembly that seals with the first oil outlet throttling channel so that the oil inlet ... one-way valve assembly so that the oil inlet throttling channel can be opened in one direction when the fluid flows

[0009] Furthermore, the opening pressure of the second oil outlet one-way valve assembly is greater than the opening pressure of the first oil outlet one-way valve assembly.

[0010] Furthermore, only at least one throttling hole is provided on the first oil outlet one-way valve assembly, and the sum of the minimum cross-sectional areas of the throttling holes is smaller than the minimum cross-sectional areas of the first oil outlet throttling channel and the oil inlet throttling channel.

[0011] Furthermore, only at least one throttling hole is provided on the oil inlet one-way valve assembly, and the sum of the minimum cross-sectional areas of the throttling holes is smaller than the minimum cross-sectional area of ​​the oil inlet throttling channel.

[0012] Furthermore, at least one throttling hole is respectively provided on the oil inlet one-way valve assembly and the first oil outlet one-way valve assembly, and the sum of the minimum cross-sectional areas of the throttling holes on the oil inlet one-way valve assembly plus the sum of the minimum cross-sectional areas of the throttling holes on the first oil outlet one-way valve assembly is smaller than the minimum cross-sectional areas of the oil inlet throttling channel and the first oil outlet throttling channel.

[0013] Furthermore, the first elastic member, the second elastic member and the third elastic member are all butterfly springs.

[0014] Furthermore, a magnet is provided on the valve seat.

[0015] The beneficial effect of the utility model is that the electromagnetic damping regulating valve of the utility model can discharge oil to the oil storage tank through only one of the first and second oil outlet throttling channels when the vibration speed of the automobile is low, so as to ensure that the chassis of the automobile has strong rigidity when the automobile vibrates at low speed; when the suspension moves up and down at a high speed and the shock absorber cylinder retracts slowly and quickly, the electromagnetic damping regulating valve can make the first and second oil outlet throttling channels discharge oil to the oil storage tank, and the damping valve has better damping characteristics at high speed, which can better ensure that the chassis of the automobile has good shock absorption performance when the automobile vibrates at high speed, and can improve the driving comfort of the automobile. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 It is a structural diagram of the utility model;

[0018] Figure 3 It is a structural diagram of the valve seat;

[0019] Figure 4 yes Figure 3 A magnified schematic diagram of point A;

[0020] Shown in the figure: valve body 1, solenoid valve core assembly 2, valve chamber 3, first oil port 4, second oil port 5, valve seat 6, inner flow channel 7, magnet 8, upper valve chamber 31, lower valve chamber 32, oil inlet throttling channel 611, first oil outlet throttling channel 612, second oil outlet throttling channel 613, oil inlet check valve assembly 614, first oil outlet check valve assembly 615, first elastic member 616, second elastic member 617, second oil outlet check valve assembly 618, third elastic member 619, throttling hole 620. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1 、 Figure 2As shown, an electromagnetic damping regulating valve of the present invention includes a valve body 1, wherein a valve chamber 3 is provided in the valve body 1, and a valve seat 6 is provided in the valve chamber 3 to separate the valve chamber 3 into an upper valve chamber 31 and a lower valve chamber 32. The valve body 1 is provided with a first oil port 4 for inlet and outlet fluids communicating with the upper valve chamber 31, and a second oil port 5 for inlet and outlet fluids communicating with the lower valve chamber 32. An oil inlet throttling channel 611, a first oil outlet throttling channel 612, and a second oil outlet throttling channel 613 are provided in the valve seat 6. One end of the oil inlet throttling channel 611 and the second oil outlet throttling channel 613 are respectively communicated with the lower valve chamber 32, and the other end is respectively communicated with the upper valve chamber 31. One end of the first oil outlet throttling channel 612 is communicated with the lower valve chamber 32. An inner flow channel 7 is also provided in the upper valve chamber 31, one end of the inner flow channel 7 is connected to the other end of the first oil outlet throttling channel 612, and the other end is connected to the upper valve chamber 31. An electromagnetic valve core assembly 2 for controlling its on and off is provided in the inner flow channel 7, and the electromagnetic valve core assembly 2 is actuated by the magnetic force generated by the on-off coil. The valve seat 6 is provided with an oil inlet one-way valve assembly 614 that seals with the oil inlet throttling channel 611 so that the oil inlet throttling channel 611 can be opened in one direction when the fluid flows from the upper valve chamber 31 to the lower valve chamber 32. It is also provided with a first oil outlet one-way valve assembly 615 that seals with the first oil outlet throttling channel 612 so that the first oil outlet throttling channel 612 can be opened in one direction when the fluid flows from the lower valve chamber 32 to the upper valve chamber 31, and a second oil outlet one-way valve assembly 618 that seals with the second oil outlet throttling channel 613 so that the second oil outlet throttling channel 613 can be opened in one direction when the fluid flows from the lower valve chamber 32 to the upper valve chamber 31. The oil inlet one-way valve assembly 614 is provided with a first elastic member 616 for controlling its opening pressure, the first oil outlet one-way valve assembly 615 is provided with a second elastic member 617 for controlling its opening pressure; the second oil outlet one-way valve assembly 618 is provided with a third elastic member 619 for controlling its opening pressure.

[0023] The solenoid valve core assembly 2 can specifically be arranged in the inner flow channel 7 using an existing direct-acting structure or a pilot-operated structure.

[0024] In the present invention, the opening pressure of the second oil outlet check valve assembly 618 can be less than or greater than the opening pressure of the first oil outlet check valve assembly 615. To improve the damping adjustment characteristics of the damping control valve, in the present invention, the opening pressure of the second oil outlet check valve assembly 618 is preferably greater than the opening pressure of the first oil outlet check valve assembly 615.

[0025] One use case of the electromagnetic damping regulating valve of the present invention is: the first oil port 4 is connected to the oil storage tank of the shock absorption system, and the second oil port 5 is connected to the rodless chamber of the shock absorption cylinder of the shock absorption system. Taking the above use case as an example, during the extension of the shock absorption cylinder, the pressure difference between the upper valve chamber 31 and the lower valve chamber 32 causes the oil inlet check valve assembly 614 to open, and the fluid (hydraulic oil) in the oil storage tank enters the rodless chamber of the shock absorption cylinder through the first oil port 4, the upper valve chamber 31, the oil inlet throttling channel 611, the lower valve chamber 32 and the second oil port 5 in sequence, thereby replenishing the hydraulic oil for the rodless chamber of the shock absorption cylinder. At this time, the first oil outlet check valve assembly 615 closes the first oil outlet throttling channel 612, and the second oil outlet check valve assembly 618 closes the second oil outlet throttling channel 613. When the suspension moves up and down at a low speed and the shock absorber cylinder retracts at a slow speed, the electromagnetic damping regulating valve of the utility model can only discharge oil to the oil tank through one of the first and second oil outlet throttling channels to ensure that the chassis has strong rigidity when the car vibrates at low speed; and when the suspension moves up and down at a high speed and the shock absorber cylinder retracts at a slow speed, the electromagnetic damping regulating valve can make the first and second oil outlet throttling channels discharge oil to the oil tank. The cooperation between the two can make the damping characteristics of the damping valve better at high speed, which can better ensure that the chassis has good shock absorption performance when the car vibrates at high speed.

[0026] To illustrate, if the opening pressure of the second oil-discharging check valve assembly 618 is greater than the opening pressure of the first oil-discharging check valve assembly 615, when the suspension's vertical movement speed is low and the shock absorber cylinder's retraction speed is slow, the pressure differential between the upper and lower valve chambers will first open the first oil-discharging check valve assembly 615, allowing the first oil-discharging throttling passage 612 to flow. At this point, power is applied to the solenoid valve core assembly 2, causing the solenoid valve core assembly's spool to actuate, thereby opening the internal flow passage 7. At this point, the fluid (hydraulic oil) in the shock absorber cylinder's rodless chamber can flow into the oil tank via the second oil port 5, the lower valve chamber 32, the first oil-discharging throttling passage 612, the internal flow passage 7, the upper valve chamber 31, and the first oil port 4. At this point, controlling the current flowing through the solenoid valve core assembly 2 can control the opening of the solenoid valve core assembly, thereby controlling the damping of the electromagnetic damping control valve at low speeds. When the suspension moves up and down at a high speed and the speed at which the shock absorber cylinder retracts reaches the designed faster speed, that is, high speed, as the pressure difference between the lower valve chamber 32 and the upper valve chamber 31 increases, the second oil outlet one-way valve assembly 618 will gradually open the second oil outlet throttling channel 613. At this time, the fluid (hydraulic oil) can be discharged to the oil tank through both the first oil outlet throttling channel and the second oil outlet throttling channel. In this way, the damping of the damping regulating valve is relatively small at high speed, and the damping characteristics are better, thereby improving the vehicle operation comfort.

[0027] In the present utility model, Figure 4As shown, in this embodiment of the present invention, only at least one throttle hole 620 is defined in the first oil outlet check valve assembly 615. The sum of the minimum cross-sectional areas of the throttle hole 620 is less than the minimum cross-sectional areas of the first oil outlet throttle channel 612 and the oil inlet throttle channel 611. The minimum cross-sectional area of ​​the throttle hole refers to the cross-sectional area at the throttle hole's minimum diameter. The minimum cross-sectional area of ​​the throttle channel follows the same principle as described above and is the cross-sectional area at the throttle channel's minimum diameter.

[0028] After the throttle hole 620 is opened on the first oil outlet one-way valve assembly 615, the oil can enter and exit the rodless chamber of the shock absorber cylinder through the throttle hole 620. In this way, when the vibration speed of the shock absorber cylinder is relatively small, the oil can enter and exit the oil storage chamber through the throttle hole 620, without opening the first oil outlet one-way valve assembly 615 when discharging oil and opening the oil inlet one-way valve assembly 614 when inletting oil. In this way, the opening pressure of the first oil outlet one-way valve assembly 615 and the oil inlet one-way valve assembly 614 can be set to be larger, so that when the frame moves up and down at low speed, it only relies on the damping shock absorption provided by the throttle hole 620, which can make the car have better rigidity when vibrating at low speed (the speed of the car is generally larger when vibrating at low speed), which helps to improve the car's handling.

[0029] As a variation of the above embodiment, at least one throttling hole 620 may be provided only on the oil inlet one-way valve assembly 614, and the sum of the minimum cross-sectional areas of the throttling holes 620 may be smaller than the minimum cross-sectional area of ​​the oil inlet throttling channel 611; or, at least one throttling hole 620 may be provided on the oil inlet one-way valve assembly 614 and the first oil outlet one-way valve assembly 615 respectively, and the sum of the minimum cross-sectional areas of the throttling holes 620 on the oil inlet one-way valve assembly 614 plus the sum of the minimum cross-sectional areas of the throttling holes 620 on the first oil outlet one-way valve assembly 615 is smaller than the minimum cross-sectional areas of the oil inlet throttling channel 611 and the oil outlet throttling channel 612.

[0030] The first elastic member 616, the second elastic member 617 and the third elastic member 619 can be cylindrical springs, butterfly springs, etc. In order to make the bottom valve structure more compact, the first elastic member 616, the second elastic member 617 and the third elastic member 619 in the embodiment of the utility model are all butterfly springs.

[0031] like Figure 3 As shown, a magnet 8 is provided on the valve seat 6 for adsorbing the iron core in the fluid.

Claims

1. An electromagnetic damping regulating valve, comprising a valve body (1), wherein a valve cavity (3) is provided in the valve body (1), and characterized in that: The valve chamber (3) is provided with a valve seat (6) for dividing the valve chamber (3) into an upper valve chamber (31) and a lower valve chamber (32); the valve body (1) is provided with a first oil port (4) for inlet and outlet fluids communicating with the upper valve chamber (31), and a second oil port (5) for inlet and outlet fluids communicating with the lower valve chamber (32); An oil inlet throttling channel (611), a first oil outlet throttling channel (612), and a second oil outlet throttling channel (613) are provided in the valve seat (6); one end of the oil inlet throttling channel (611) and the second oil outlet throttling channel (613) are respectively communicated with the lower valve cavity (32), and the other end thereof is respectively communicated with the upper valve cavity (31); one end of the first oil outlet throttling channel (612) is communicated with the lower valve cavity (32); An inner flow channel (7) is further provided in the upper valve chamber (31), one end of the inner flow channel (7) is communicated with the other end of the first oil outlet throttling channel (612), and the other end is communicated with the upper valve chamber (31), and an electromagnetic valve core assembly (2) for controlling its on-off is provided in the inner flow channel (7); The valve seat (6) is provided with an oil inlet check valve assembly (614) which is in sealing cooperation with the oil inlet throttling channel (611) so that the oil inlet throttling channel (611) can be opened in one direction when the fluid flows from the upper valve chamber (31) to the lower valve chamber (32); and a first oil outlet check valve assembly (615) which is in sealing cooperation with the first oil outlet throttling channel (612) so that the first oil outlet throttling channel (612) can be opened in one direction when the fluid flows from the lower valve chamber (32) to the upper valve chamber (31); and a second oil outlet check valve assembly (613) which is in sealing cooperation with the second oil outlet throttling channel (613) ) is sealed and matched to enable the second oil outlet throttling channel (613) to be opened in one direction when the fluid flows from the lower valve chamber (32) to the upper valve chamber (31); the oil inlet one-way valve assembly (614) is provided with a first elastic member (616) for controlling its opening pressure; the first oil outlet one-way valve assembly (615) is provided with a second elastic member (617) for controlling its opening pressure; and the second oil outlet one-way valve assembly (618) is provided with a third elastic member (619) for controlling its opening pressure.

2. The electromagnetic damping regulating valve according to claim 1, characterized in that: The opening pressure of the second oil outlet one-way valve assembly (618) is greater than the opening pressure of the first oil outlet one-way valve assembly (615).

3. The electromagnetic damping regulating valve according to claim 2, characterized in that: Only at least one throttling hole (620) is provided on the first oil outlet one-way valve assembly (615), and the sum of the minimum cross-sectional areas of the throttling holes (620) is smaller than the minimum cross-sectional areas of the first oil outlet throttling channel (612) and the oil inlet throttling channel (611).

4. The electromagnetic damping regulating valve according to claim 2, characterized in that: Only at least one throttle hole (620) is provided on the oil inlet one-way valve assembly (614), and the sum of the minimum cross-sectional areas of the throttle holes (620) is smaller than the minimum cross-sectional area of ​​the oil inlet throttling channel (611).

5. The electromagnetic damping regulating valve according to claim 2, characterized in that: At least one throttling hole (620) is respectively provided on the oil inlet one-way valve assembly (614) and the first oil outlet one-way valve assembly (615), and the sum of the minimum cross-sectional areas of the throttling holes (620) on the oil inlet one-way valve assembly (614) plus the sum of the minimum cross-sectional areas of the throttling holes (620) on the first oil outlet one-way valve assembly (615) is smaller than the minimum cross-sectional areas of the oil inlet throttling channel (611) and the first oil outlet throttling channel (612).

6. The electromagnetic damping regulating valve according to claim 1, characterized in that: The first elastic member (616), the second elastic member (617) and the third elastic member (619) are all butterfly springs.

7. The electromagnetic damping regulating valve according to claim 1, characterized in that: A magnet (8) is provided on the valve seat (6).

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