Normally open type adjustable damping electromagnetic valve for active hydraulic suspension

Abstract

The utility model relates to the field of automobile electromagnetic valves, and discloses a normally open type adjustable damping electromagnetic valve for an active hydraulic suspension. The upper end part of the magnetic conductive tube is provided with an electromagnetic induction driving piece and a valve seat matched with the lower end part; one end of the valve element is assembled on the valve seat in a sliding mode, and the other end of the valve element abuts against the electromagnetic induction driving piece; when the electromagnetic induction driving piece is not powered on, the valve element is jacked up through the elastic piece, and the first liquid inlet located in the valve seat is fully opened; when the electromagnetic induction driving piece is electrified, the valve element is pushed to gradually or completely shield the first liquid inlet, so that damping adjustment or the active force effect of the active suspension is achieved. The movement stability and the control precision of the valve element are improved, and the valve element adapts to different working conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile electromagnetic valve, concretely relates to a normally open type adjustable damping electromagnetic valve for active hydraulic suspension. BACKGROUND

[0002] The electromagnetic valve is a kind of industrial equipment by electromagnetic control, is widely used in fluid control field, as automation basic element, belongs to the category of actuator. Electromagnetic valve is mainly divided into hydraulic and pneumatic two types, can adjust the direction of medium, flow, speed and other parameters in industrial control system, and widely used.

[0003] Hydraulic electromagnetic valve realizes flow regulation by adjusting the throttle opening area between valve core and valve body, to control the movement of execution element. However, most of the current hydraulic electromagnetic valve is still passive system, there is the problem of adjustable damping, and the movement control precision of valve core is poor, limit the adaptability under different working conditions. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a normally open type adjustable damping electromagnetic valve for active hydraulic suspension to solve the above-mentioned deficiencies in prior art.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A normally open type adjustable damping electromagnetic valve for active hydraulic suspension, comprising:

[0007] Magnetic conducting pipe, the upper end portion is provided with electromagnetic induction driving part and the valve seat matched with lower end portion;

[0008] Valve core is slidably assembled on the valve seat in the magnetic conducting pipe and abuts against the electromagnetic induction driving part on the other end;

[0009] When the electromagnetic induction driving part is not electrified, the valve core is lifted by elastic member, and the first liquid inlet on the valve seat is fully opened;When the electromagnetic induction driving part is electrified, the valve core is gradually or completely shielded to the first liquid inlet, to realize damping adjustment or active force action of active suspension.

[0010] As a preferred scheme of the utility model, the valve core includes: open type cylinder with stroke cavity, corresponding first through hole is symmetrically penetrated on the stroke cavity, and the cylinder is connected with intermediate section and stroke column vertically arranged on the intermediate section.

[0011] As a preferred scheme of the utility model, the valve seat is provided with cylindrical table extending into the cavity of magnetic conducting pipe, the cylinder is sleeved on the outer surface of the cylindrical table, and moves along the outer surface to shield the first liquid inlet.

[0012] As a preferred form of the present application, the first liquid inlet is triangular, circular, waist-shaped or trapezoidal in shape.

[0013] As a preferred form of the present application, the elastic member is located between the top surface of the cylindrical table and the bottom of the stroke column.

[0014] As a preferred form of the present application, at least two second liquid inlets are annularly distributed on the magnetic conducting pipe and communicate with the cavity, and the second liquid inlets communicate with the first liquid inlet.

[0015] The cavity is provided with a guide member, the stroke column passes through the guide member and moves along the guide member, and gaps are formed between the stroke column, the intermediate section, the cylinder and the guide member.

[0016] As a preferred form of the present application, the electromagnetic induction driving member comprises an electromagnetic coil carried on the magnetic conducting pipe, a valve sleeve is arranged on the magnetic conducting pipe, the valve sleeve and the electromagnetic coil are riveted by an upper yoke plate, an armature is arranged in the cavity, and the armature pushes the valve core to move.

[0017] As a preferred form of the present application, a second through hole penetrating the height direction of the armature is arranged in the armature, and the second through hole communicates the space at the top and the bottom of the armature.

[0018] As a preferred form of the present application, a magnetic shielding ring is arranged on the magnetic conducting pipe.

[0019] As a preferred form of the present application, a locking sleeve for threaded connection with an external damper is arranged on the valve sleeve.

[0020] The present application has the following beneficial effects: when the electromagnetic induction driving member is energized, the valve seat gradually blocks the throttling area of the first liquid inlet to achieve damping adjustment, and when the blocking is completed, the active force of the active suspension is realized. When the electromagnetic induction driving member is not energized, the valve seat is lifted by the elastic member, the first liquid inlet on the valve seat is fully open, and the damping force is minimum at this time, which not only improves the movement stability and control accuracy of the valve core, but also adapts to different working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0022] Fig. 1 It is the overall structure schematic view of the electromagnetic valve of the utility model.

[0023] Fig. 2 It is the non-electrically always open sectional structure schematic view of the electromagnetic valve of the utility model.

[0024] Fig. 3 It is the sectional structure schematic view of the electromagnetic valve of the utility model with electric armature moving state.

[0025] Fig. 4 It is the valve seat structure schematic view of the utility model.

[0026] Fig. 5 It is the valve core structure schematic view of the utility model in two different angle directions.

[0027] Fig. 6 It is the magnetic conducting pipe structure schematic view of the utility model.

[0028] Explanation of reference signs:

[0029] 1, magnetic conducting pipe; 11, second liquid inlet; 12, cavity; 2, electromagnetic induction driving part; 21, electromagnetic coil; 22, valve sleeve; 23, upper yoke plate; 24, armature; 241, second through hole; 3, valve seat; 31, first liquid inlet; 32, cylindrical table; 4, valve core; 41, barrel; 411, stroke cavity; 412, first through hole; 42, middle section; 43, stroke column; 5, elastic part; 6, guide part; 7, magnetic isolation ring; 8, locking sleeve; 9, thimble; 10, O-shaped sealing ring; 101, gap. Specific implementation

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0031] Reference is made to Figs. 1 to 6The utility model provides a kind of normally open adjustable damping solenoid valve for active hydraulic suspension, comprising: magnetic conducting pipe 1, electromagnetic induction driving part 2 is provided on its upper end portion, wherein, electromagnetic induction driving part 2 includes: electromagnetic coil 21 carried on magnetic conducting pipe 1, valve sleeve 22 is welded or interference pressure equipped on magnetic conducting pipe 1, valve sleeve 22 and electromagnetic coil 21 are riveted by upper yoke plate 23, armature 24 is arranged in the cavity 12 of magnetic conducting pipe 1, by the conduction of electromagnetic coil 21, armature 24 in the magnetic conducting pipe 1 moves along the inner wall of the cavity 12 of magnetic conducting pipe 1, and when electromagnetic coil 21 is not conductive, armature 24 does not move.The above-mentioned electromagnetic induction driving part 2 can realize the accurate control of armature 24, to improve the response speed and control accuracy of equipment.Magnetic conducting pipe 1 is provided with magnetic isolation ring 7, the magnetic isolation ring 7 can concentrate magnetic induction lines in working area, effectively isolate the surrounding interference magnetic field, to reduce interference.The above-mentioned electromagnetic induction principle is prior art, and here is not described in detail.Valve sleeve 22 and electromagnetic coil 21 riveting structure design improves the mechanical stability of equipment, reduces the failure risk caused by vibration or external impact.

[0032] In addition, locking sleeve 8 for threaded connection with external shock absorber is arranged on valve sleeve 22, so that the installation and disassembly of solenoid valve and shock absorber are more convenient, and maintenance and replacement are facilitated when needed.At the same time, O-shaped sealing ring 10 is also arranged on magnetic conducting pipe 1 to reduce medium leakage at the matching place of solenoid valve and shock absorber, and improve the sealing performance of solenoid valve.

[0033] Valve seat 3 is matched with the lower end of magnetic conducting pipe 1, valve core 4 is arranged in magnetic conducting pipe 1 and is slidably assembled on valve seat 3, and the other end abuts against electromagnetic induction driving part 2.

[0034] When electromagnetic induction driving part 2 is not electrified, valve core 4 is lifted by elastic member 5, first liquid inlet 31 on valve seat 3 is fully open, at this time, the flow of first liquid inlet 31 is maximum, and the damping force is minimum.When electromagnetic induction driving part 2 is electrified, electromagnetic induction driving part 2 pushes valve core 4 to gradually block the throttling area of first liquid inlet 31, that is, armature 24 pushes valve core 4, and with the increase of current of electromagnetic coil 21, the magnetic field intensity is larger and larger, and the electromagnetic force is gradually increased, so that the pre-tightening force of elastic member 5 is overcome, to realize damping adjustment, when first liquid inlet 31 is completely blocked, the active force of active suspension is realized, that is, for external shock absorber connected with solenoid valve, the active force of shock absorber is realized, and is fed back to automobile main suspension, to improve the comfort and adaptability to various road conditions during automobile driving process.Similarly, the above-mentioned adjustable damping force can better filter the ruggedness and impact of road surface, reduce the inclination and bumping feeling of vehicle body, to improve the comfort of driving or riding.

[0035] Specifically, the valve core 4 includes: an open cylinder 41 with a stroke cavity 411, a corresponding first through hole 412 is symmetrically passed through on the stroke cavity 411, and the cylinder 41 is connected with an intermediate section 42 and a stroke column 43 vertically arranged on the intermediate section 42.

[0036] The valve seat 3 is provided with a cylindrical table 32 extending into the cavity 12 of the magnetic conducting pipe 1, and the cylinder 41 is sleeved on the outer surface of the cylindrical table 32 and moves along the outer surface to block the first liquid inlet 31.

[0037] The valve core 4 with the stroke cavity 411 and the first through hole 412 can provide one more medium flow path and control the flow and pressure in the electromagnetic valve. The open cylinder 41 enables the valve core 4 to realize fast forward and fast backward on the valve seat 3. Meanwhile, the cylinder 41 is sleeved on the cylindrical table 32, which can improve the contact sealing between the valve seat 3 and the valve core 4, reduce fluid leakage, and enhance the sealing performance of the system. It can also accurately adjust the amount of fluid entering the first liquid inlet 31, which helps to achieve more flexible flow control to meet different working requirements. The cylindrical table 32 also provides good guiding function, so that the movement of the cylinder 41, i.e. the valve core 4, remains in a relatively stable track, improving the stability of the valve core 4.

[0038] The shape of the first liquid inlet 31 includes but is not limited to triangle, circle, waist shape or trapezoid and other shapes, which can also provide different flow paths or fluctuations for the fluid as needed to adapt to various fluid states.

[0039] In addition, the elastic member 5 is located between the top surface of the cylindrical table 32 and the bottom of the stroke column 43. When the electromagnetic valve is in a non-electric state, one end of the elastic member 5 pushes the valve core 4, forcing the cylindrical table 32 to move upward to abut against the armature 24, and the first liquid inlet 31 is completely opened. The elastic member 5 here can be selected as a restoring spring or other components with elastic lifting function.

[0040] In some embodiments, the cylindrical table 32 can be selectively provided with a top pin 9 that can move up and down. When the pressure in the stroke cavity 411 is higher than the pressure in the cavity of the valve seat 3, the head of the top pin 9 is pressed on the top of the cylindrical table 32, and the tail end of the top pin 9 extends into the cavity of the valve seat 3 to play a role in pressure relief. Conversely, the same applies.

[0041] There are at least two second liquid inlets 11 in the annular distribution on the magnetic conducting pipe 1, which communicate with the cavity 12. In this embodiment, there are preferably four second liquid inlets 11, and the second liquid inlets 11 communicate with the medium fluid in the external shock absorber. When the fluid flows into the second liquid inlet 11, the fluid flows through the cavity 12 of the magnetic conducting pipe 1, and then to the first liquid inlet 31 of the valve seat 3 and its cavity.

[0042] A guide 6 is arranged in the cavity 12, the stroke column 43 passes through the guide 6 and moves along the guide 6, the guide 6 can effectively limit the movement range of the stroke column 43, prevent unnecessary deviation, thereby improving the stability and reliability of the system. The guide 6 here can be a guide sleeve, and is interference fit with the magnetic conducting pipe 1.

[0043] In addition, gaps 101 are formed between the stroke column 43, the middle section 42, the cylinder 41 and the guide 6. And the armature 24 is provided with a second through hole 241 penetrating the height direction thereof, the second through hole 241 communicates the spaces at the top and bottom of the armature 24. When the fluid flows into the second liquid inlet 11, the fluid can enter the above-mentioned gaps 101, the second through hole 241 and the spaces at the top and bottom of the armature 24, in order to keep the pressure inside the valve body same, also ensure that there is no hydraulic pressure when the armature 24 and the valve core 4 move, improve the normal operation of the electromagnetic valve.

[0044] The above description of disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A normally open type adjustable damping solenoid valve for an active hydraulic suspension, characterized by, The utility model relates to a damping valve for active suspension, comprising: a magnetic conducting pipe, the upper end of which is provided with an electromagnetic induction driving part and a valve seat matched with the lower end thereof; a valve core, which is arranged in the magnetic conducting pipe and slidably assembled on the valve seat at one end and abuts against the electromagnetic induction driving part at the other end; when the electromagnetic induction driving part is not electrified, the valve core is lifted by an elastic part, and a first liquid inlet on the valve seat is fully opened; when the electromagnetic induction driving part is electrified, the valve core is pushed to gradually or completely block the first liquid inlet, so as to realize damping adjustment or active force action of the active suspension.

2. The normally open type adjustable damping solenoid valve for active hydraulic suspension according to claim 1, characterized by: The valve core comprises an open cylinder body with a stroke cavity, a corresponding first through hole symmetrically penetrating the stroke cavity, an intermediate section connected to the cylinder body and a stroke column vertically arranged on the intermediate section.

3. The normally open type adjustable damping solenoid valve for active hydraulic suspension according to claim 2, characterized by: The valve seat is provided with a cylindrical table extending into the cavity of the magnetic conducting pipe, the cylinder body is sleeved on the outer surface of the cylindrical table and moves along the outer surface to block the first liquid inlet.

4. The normally open type adjustable damping solenoid valve for active hydraulic suspension according to claim 3, characterized by: The shape of the first liquid inlet is triangular, circular, waist-shaped or trapezoidal.

5. The normally open type adjustable damping solenoid valve for active hydraulic suspension according to claim 3, characterized by: The elastic part is located between the top surface of the cylindrical table and the bottom of the stroke column.

6. The normally open adjustable damping solenoid valve for active hydraulic suspension according to claim 3, characterized in that: At least two second liquid inlets, which are in communication with the cavity, are annularly distributed on the magnetic conducting pipe, and the second liquid inlets are in communication with the first liquid inlet; a guide part is arranged in the cavity, the stroke column passes through the guide part and moves along the guide part, and gaps are formed between the stroke column, the intermediate section, the cylinder body and the guide part.

7. The normally open type adjustable damping solenoid valve for active hydraulic suspension according to claim 3, characterized by: The electromagnetic induction driving part comprises an electromagnetic coil carried on the magnetic conducting pipe, a valve sleeve arranged on the magnetic conducting pipe, a riveting of the valve sleeve and the electromagnetic coil through an upper yoke plate, an armature arranged in the cavity and pushing the valve core to move.

8. The normally open adjustable damping solenoid valve for active hydraulic suspension according to claim 7, characterized in that: The armature is provided with a second through hole penetrating the height direction thereof, and the second through hole is in communication with the spaces at the top and bottom of the armature.

9. The normally open adjustable damping solenoid valve for active hydraulic suspension according to claim 8, characterized in that: The magnetic conducting pipe is provided with a magnetic shielding ring.

10. The normally open adjustable damping solenoid valve for active hydraulic suspension according to claim 7, characterized in that: The valve sleeve is provided with a locking sleeve for threaded connection with an external shock absorber.

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