Damping-controlled shock absorber electromagnetic valve with main-stage double-spring structure

Abstract

The utility model discloses a damping-controlled shock absorber electromagnetic valve with a main-stage double-spring structure, which relates to the technical field of electromagnetic valves and comprises a main valve seat, a valve sleeve is fixedly sleeved on the outer wall of the main valve seat, a main-stage valve core is sleeved inside the valve sleeve, a throttling hole is arranged on the outer wall of the main-stage valve core, and the throttling hole is communicated with the valve sleeve. A spring seat is placed on the inner wall of the primary valve element, the outer wall of the spring seat is sleeved with a primary soft spring, the primary soft spring is located between the primary valve element and the spring seat, a primary hard spring is placed on the inner wall of the spring seat, one end of the primary hard spring makes contact with the inner wall of the spring seat, and the other end of the primary hard spring makes contact with the inner wall of the spring seat. According to the electromagnetic valve with the through-flow holes, the through-flow holes are distributed in the periphery of a circle in the mode of avoiding the center position, so that real-time recording of the size can be achieved, assembling of the preset distance L is accurately guaranteed, and the consistency of the functions of the electromagnetic valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solenoid valves, in particular to a shock absorber solenoid valve with a damping-controlled main-stage double-spring structure. Background Art

[0002] A shock absorber is used to suppress the oscillation after the shock-absorbing spring rebounds and the impact from the road surface. It is widely used in automotive shock absorption to attenuate the vibration of the vehicle frame and body, thereby improving the ride comfort of the vehicle. The shock absorber is filled with hydraulic fluid and has an inner and an outer chamber. The hydraulic fluid 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 hydraulic fluid in its chamber will flow back and forth between the two chambers under the action of the reciprocating motion of the piston. The damping control solenoid valve controls the size of the oil passage switch of the hydraulic fluid to change the resistance of the hydraulic fluid reciprocating between the chambers, thereby realizing the change of the damping of the shock absorber.

[0003] For example, the main-stage valve of a continuously variable damping shock absorber solenoid valve is disclosed in the Chinese patent document with the publication number CN219994253U, which records that "it includes a valve sleeve, and a moving spool, an overflow spool, and an upper valve cover arranged in the valve sleeve; the moving spool is axially provided with a communicating damping hole and a pilot chamber. An upper part of the pilot chamber is movably provided with a spring seat in the shape of a hat with a turned-up edge in a circle and the opening of the spring seat faces downward. A second main-stage spring is arranged in the inner cavity of the hat. One end of the second main-stage spring abuts against the bottom surface of the spring seat, and the other end of the second main-stage spring abuts against the bottom surface of the moving spool and the damping hole is located in the second main-stage spring; the spring seat is coaxially inserted into the inner circle of a first main-stage spring. One end of the first main-stage spring abuts against the turned-up edge of the spring seat, and the other end abuts against the overflow spool; when the moving spool is closed, there is a preset distance between the bottom surface of the spring seat and the lower end surface of the overflow spool".

[0004] When the main-stage spool 1 is closed, there is a preset distance L between the end face of the main-stage spool 1 and the end face of the spring seat 2, as shown in the accompanying drawings of the specification Figure 8 As shown, the main-stage hard spring 3 and the main-stage soft spring 4 are in series, which extends the total length of the main-stage spring and reduces the spring preload force on the main-stage spool 1; before the displacement of the main-stage spool 1 from the main valve seat 5 is less than the preset distance L, the main-stage spool 1 is subjected to a relatively small spring force, realizing the low-pressure opening ability.

[0005] The disadvantages existing in the prior art are also that: as shown in the above patent CN219994253U, the assembly adjustment process of the preset distance L is complex and it is impossible to accurately adjust to the target value, which directly leads to poor consistency of the functions of the solenoid valve. Summary of the Utility Model

[0006] The purpose of the present utility model is to solve the deficiencies existing in the prior art, and a damping control main-stage double-spring structure shock absorber solenoid valve is proposed.

[0007] In order to achieve the above purpose, the present utility model adopts the following technical solutions:

[0008] A damping control main-stage double-spring structure shock absorber solenoid valve, including a main valve seat, the outer wall of the main valve seat is fixedly sleeved with a valve sleeve, the inside of the valve sleeve is sleeved with a main-stage valve core, a throttling hole is opened on the outer wall of the main-stage valve core, a spring seat is placed inside the main-stage valve core, a main-stage soft spring is sleeved on the outer wall of the spring seat, the main-stage soft spring is located between the main-stage valve core and the spring seat, a main-stage hard spring is placed inside the spring seat, one end of the main-stage hard spring contacts the inner wall of the spring seat, the other end of the spring seat contacts the inner wall of the main-stage valve core, a flow-through hole is opened on the outer wall of the spring seat, and the flow-through hole is located outside the spring seat.

[0009] Preferably, the throttling hole is located in the middle of the main-stage valve core, and the spring seat is located on one side close to the throttling hole.

[0010] Preferably, the spring seat is circular, there are four flow-through holes, and the four flow-through holes are distributed around the circumference of the circular spring seat.

[0011] Preferably, an adjusting gasket is sleeved on the right side of the main valve seat, and the adjusting gasket is located between the main valve seat and the valve sleeve.

[0012] Preferably, a first displacement sensor is sleeved in the middle of the main-stage valve core, the first displacement sensor extends to the inside of the main-stage valve core through the throttling hole, and one end of the first displacement sensor contacts the outer wall of the spring seat.

[0013] Preferably, a telescopic motor and a second displacement sensor are arranged on the outside of the main-stage valve core, and both the telescopic motor and the second displacement sensor contact the outer wall of the main-stage valve core.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. In the present utility model, through the design of distributing the flow-through holes around the circumference of the circle avoiding the center position, the real-time recording of the size can be realized, the assembly of the preset distance L can be accurately guaranteed, and the consistency of the solenoid valve function is improved.

[0016] 2. In the present utility model, assembling the spring seat at one end close to the throttling hole can enable the measuring device to better perform the measurement, improve the measurement accuracy, and further ensure the accuracy of the result. Description of the Drawings

[0017] Figure 1Structural schematic diagram of an electromagnetic valve of a shock absorber with a damping-controlled main-stage double-spring structure according to the present utility model.

[0018] Figure 2 Left view of an electromagnetic valve of a shock absorber with a damping-controlled main-stage double-spring structure according to the present utility model.

[0019] Figure 3 For an electromagnetic valve of a shock absorber with a damping-controlled main-stage double-spring structure according to the present utility model Figure 2 Cross-sectional view taken along A-A.

[0020] Figure 4 Exploded view of an electromagnetic valve of a shock absorber with a damping-controlled main-stage double-spring structure according to the present utility model.

[0021] Figure 5 Structural schematic diagram of the main-stage valve core of an electromagnetic valve of a shock absorber with a damping-controlled main-stage double-spring structure according to the present utility model.

[0022] Figure 6 Structural schematic diagram of the spring seat of an electromagnetic valve of a shock absorber with a damping-controlled main-stage double-spring structure according to the present utility model.

[0023] Figure 7 Structural schematic diagram of the main-stage valve core and the spring seat of an electromagnetic valve of a shock absorber with a damping-controlled main-stage double-spring structure according to the present utility model.

[0024] Figure 8 Structural schematic diagram of the main-stage valve core, valve sleeve, and throttle hole of an electromagnetic valve of a shock absorber with a damping-controlled main-stage double-spring structure according to the present utility model.

[0025] Figure 9 Cross-sectional view of the main-stage valve core of an electromagnetic valve of a shock absorber with a damping-controlled main-stage double-spring structure according to the present utility model.

[0026] Figure 10 Cross-sectional view of the main valve seat of an electromagnetic valve of a shock absorber with a damping-controlled main-stage double-spring structure according to the present utility model.

[0027] Figure 11 Cross-sectional view of the adjusting gasket of an electromagnetic valve of a shock absorber with a damping-controlled main-stage double-spring structure according to the present utility model.

[0028] Reference numerals in the figure: 1, main-stage valve core; 2, spring seat; 3, main-stage hard spring; 4, main-stage soft spring; 5, main valve seat; 6, adjusting gasket; 7, valve sleeve; 8, throttle hole; 9, flow-through hole; 10, first displacement sensor; 11, telescopic motor; 12, second displacement sensor. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0030] As shown in the attached Figure 1 to the attached Figure 11 figures:

[0031] A damping-controlled main-stage double-spring structure shock absorber solenoid valve, including a main valve seat 5, an outer wall of the main valve seat 5 is fixedly sleeved with a valve sleeve 7, a main-stage valve core 1 is sleeved inside the valve sleeve 7, a throttle hole 8 is opened on an outer wall of the main-stage valve core 1, a spring seat 2 is placed inside the main-stage valve core 1, a main-stage soft spring 4 is sleeved on an outer wall of the spring seat 2, the main-stage soft spring 4 is located between the main-stage valve core 1 and the spring seat 2, a main-stage hard spring 3 is placed inside the spring seat 2, one end of the main-stage hard spring 3 contacts an inner wall of the spring seat 2, the other end of the main-stage hard spring 3 contacts an inner wall of the main-stage valve core 1, a flow-through hole 9 is opened on an outer wall of the spring seat 2, the flow-through hole 9 is located outside the spring seat 2, the throttle hole 8 is located in the middle of the main-stage valve core 1, the spring seat 2 is located on a side close to the throttle hole 8, the spring seat 2 is circular, there are four flow-through holes 9, and the four flow-through holes 9 are distributed around the circle of the spring seat 2.

[0032] In the above technical solution, through the design of distributing the flow-through holes 9 around the circle avoiding the central position, the real-time recording of the size can be realized, the assembly of the preset distance L can be accurately guaranteed, and the consistency of the solenoid valve function is improved;

[0033] Assembling the spring seat 2 at one end close to the throttle hole 8 can enable the measuring device to better perform the measurement, improve the measurement accuracy, and further ensure the accuracy of the result.

[0034] As shown in the attached Figure 3 and the attached Figure 7 figures, a first displacement sensor 10 is sleeved in the middle of the main-stage valve core 1, the first displacement sensor 10 extends to the inside of the main-stage valve core 1 through the throttle hole 8, and one end of the first displacement sensor 10 contacts an outer wall of the spring seat 2.

[0035] In the above technical solution, taking the step surface on the side of the valve sleeve 7 close to the main valve seat 5 as the reference P, the first displacement sensor 10 measures the distance H from the reference plane P to one end surface of the spring seat 2 through the throttle hole 8;

[0036] As shown in the attached Figure 7 figures, a telescopic motor 11 and a second displacement sensor 12 are arranged outside the main-stage valve core 1, and both the telescopic motor 11 and the second displacement sensor 12 contact the outer wall of the main-stage valve core 1.

[0037] In the above technical solution, the main-stage valve core 1 is slowly pressed axially into the valve sleeve 7 by the telescopic motor 11, and the pressing depth h is monitored in real time by the second displacement sensor 12.

[0038] It is worth mentioning that the first displacement sensor 10, the telescopic motor 11, and the second displacement sensor 12 can all be purchased on the market. For example, the first displacement sensor 10 uses a micro electric telescopic rod of Ge'er Electromechanical Company, and the telescopic motor 11 and the second displacement sensor 12 use magnetostrictive displacement sensors of MILONT, which are mature technologies in this field and have been fully disclosed, so they will not be repeated in the specification.

[0039] Specific usage method and function of this embodiment:

[0040] The working principle of this utility model is the same as that of CN219994253U, and will not be elaborated here;

[0041] Specifically, when the main-stage valve core 1 is closed, there is a preset distance L between the end face of the main-stage valve core 1 and the end face of the spring seat 2. Refer to Figure 8 ;

[0042] Principle of precise adjustment of the preset distance L:

[0043] Step 1: First measure and record the thickness A of the main-stage valve core 1. Refer to Figure 9 ;

[0044] Step 2: Install the main-stage hard spring 3, spring seat 2, main-stage soft spring 4, and main-stage valve core 1 into the valve sleeve 7 in sequence. Refer to Figures 3-4 ;

[0045] Step 3: Take the step surface on the side of the valve sleeve 7 close to the main valve seat 5 as the reference P. Refer to Figure 3 and Figure 7 ;

[0046] Step 4: The first displacement sensor 10 measures the distance H from the reference plane P to one end face of the spring seat 2 through the throttle hole 8. Refer to Figure 7 ;

[0047] Step 5: The main-stage valve core 1 is slowly pressed axially into the valve sleeve 7 by the telescopic motor 11, and the pressing depth h is monitored in real time by the second displacement sensor 12. Refer to Figure 7 ;

[0048] Step 6: Through algorithm calculation, when H - h - A = L, the servo motor stops pressing, and the first displacement sensor 10, the telescopic motor 11, and the second displacement sensor 12 are withdrawn;

[0049] Step 7: Measure and record the step height B of the main valve seat 5, and calculate the thickness D of the adjusting gasket 6, D = B - h. Refer to Figures 10-11 ;

[0050] Step Eight: Select the type of shim 6 with thickness D. It is worth mentioning that the shim 6 can be made into dozens of types, and the thickness of each type differs by 5um;

[0051] Step Nine: Install the shim 6 into the valve sleeve 7 and press it onto the main valve seat 5 until mechanical limit.

[0052] Please refer to the above structure and process Figures 1-6 。

[0053] Through the design of distributing the flow passage holes 9 around the circle avoiding the center position, the real-time recording of dimensions can be realized, the assembly of the preset distance L can be accurately ensured, and the consistency of the solenoid valve function is improved;

[0054] Assembling the spring seat 2 at one end close to the throttle hole 8 can enable the measuring device to better perform measurement, improve the measurement accuracy, and further ensure the accuracy of the result.

[0055] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A damping-controlled main-stage dual-spring structure shock absorber solenoid valve, comprising a main valve seat (5), characterized in that: The outer wall of the main valve seat (5) is fixedly sleeved with a valve sleeve (7), the interior of the valve sleeve (7) is sleeved with a main-stage valve core (1), the outer wall of the main-stage valve core (1) is provided with a throttling hole (8), the inner wall of the main-stage valve core (1) is provided with a spring seat (2), the outer wall of the spring seat (2) is sleeved with a main-stage soft spring (4), the main-stage soft spring (4) is located between the main-stage valve core (1) and the spring seat (2), the inner wall of the spring seat (2) is provided with a main-stage hard spring (3), one end of the main-stage hard spring (3) is in contact with the inner wall of the spring seat (2), the other end of the spring seat (2) is in contact with the inner wall of the main-stage valve core (1), the outer wall of the spring seat (2) is provided with a flow hole (9), and the flow hole (9) is located on the outer side of the spring seat (2).

2. A damping-controlled main-stage dual-spring structure shock absorber solenoid valve according to claim 1, characterized in that: The throttle hole (8) is located in the middle of the main-stage valve core (1), and the spring seat (2) is located on a side close to the throttle hole (8).

3. A damping-controlled main-stage dual-spring structure shock absorber solenoid valve according to claim 2, characterized in that: The spring seat (2) is circular, and there are four through-holes (9), which are distributed around the circular shape of the spring seat (2).

4. A damping-controlled main-stage dual-spring structure shock absorber solenoid valve according to claim 1, characterized in that: An adjusting gasket (6) is sleeved on the right side of the main valve seat (5), and the adjusting gasket (6) is located between the main valve seat (5) and the valve sleeve (7).

5. A damping-controlled main-stage dual-spring structure shock absorber solenoid valve according to claim 4, characterized in that: A first displacement sensor (10) is sleeved in the middle of the main-stage valve core (1); the first displacement sensor (10) extends to the inner side of the main-stage valve core (1) through a throttle hole (8); one end of the first displacement sensor (10) contacts the outer wall of the spring seat (2).

6. A damping-controlled main-stage dual-spring structure shock absorber solenoid valve according to claim 5, characterized in that: A telescopic motor (11) and a second displacement sensor (12) are arranged on the outside of the main-stage valve core (1); the telescopic motor (11) and the second displacement sensor (12) are both in contact with the outer wall of the main-stage valve core (1).

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