Pneumatic electromagnetic valve structure and air suspension system

Abstract

The utility model provides a pneumatic solenoid valve structure and an air suspension system, the pneumatic solenoid valve structure comprises a valve body, a valve core and a stator iron core, the stator iron core and the valve body are arranged oppositely or connected, a first accommodating groove is formed in the stator iron core in the direction far away from the valve body, and the valve core is arranged in the first accommodating groove. A first containing groove is formed in the valve body, a second containing groove is formed in the valve body in the direction away from the stator iron core, at least part of the structure of the valve element is contained in the first containing groove, at least part of the structure of the valve element is contained in the second containing groove, and therefore the valve element can move in the first containing groove and the second containing groove to cut off or open a gas channel of the valve body. The stator iron core comprises a magnetic conductive part opposite to the valve element, an air gap exists between the magnetic conductive part and the valve element, and the size of the air gap is 0.3-0.7 mm. According to the pneumatic electromagnetic valve, electromagnetic force can be guaranteed, meanwhile, the situation that the air outlet hole of the valve body cannot be pressed is avoided, air leakage is avoided, and therefore the adjusting precision of the pneumatic electromagnetic valve is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air suspension technical field, concretely relates to a kind of pneumatic solenoid valve structure and air suspension system. BACKGROUND

[0002] Electric control air suspension system (ECAS) includes height and pressure sensor, electronic control unit (ECU), solenoid valve and shock absorber etc. ECAS system adjusts vehicle height, suspension stiffness and damping by air spring and shock absorber, adapts to various operating conditions of vehicle, and solenoid valve is the "hand and foot" of automobile electric control system, plays a key role in the control of ECAS electric control air suspension system.

[0003] Solenoid valve is used for controlling fluid flow and flow rate (for the functions such as charging, exhausting, locking the pipeline air pressure of air suspension) as automatic device. Solenoid valve is mainly composed of valve core, armature, electromagnetic coil, valve body, spring etc. When coil is powered on or off, coil magnetic field generates magnetic force to magnet, and then overcomes spring elasticity, makes armature drive valve core to move, realizes valve body to close or open. From the multiple scientific angles such as theoretical model, structure, process, electromagnetic dynamics, the method for small-sized solenoid valve with high reliability, high sensitivity and compact structure is involved. High-reliability coil and structure design achieve good parameter stability, protection performance and environmental adaptability.

[0004] Because pneumatic solenoid valve in prior art has technical problems such as complex air path structure, larger aperture and low adjustment accuracy, therefore the utility model researches and designs a kind of pneumatic solenoid valve structure and air suspension system. UTILITY MODEL CONTENT

[0005] Therefore, the technical problem to be solved by the utility model is to overcome the defect of low adjustment accuracy of pneumatic solenoid valve in prior art, so as to provide a kind of pneumatic solenoid valve structure and air suspension system.

[0006] In order to solve the above problems, the utility model provides a kind of pneumatic solenoid valve structure, it includes:

[0007] The valve body, the valve core and the stator core, the stator core is opposite or connected with the valve body, the first accommodating groove is formed on the stator core in the direction away from the valve body, the second accommodating groove is formed on the valve body in the direction away from the stator core, at least part of the structure of the valve core is accommodated in the first accommodating groove, at least part of the structure of the valve core is accommodated in the second accommodating groove, so that the valve core can move in the first accommodating groove and the second accommodating groove to cut off or open the gas passage of the valve body, and the stator core includes a magnetic conducting part opposite to the valve core, and there is an air gap between the magnetic conducting part and the valve core, the size of the air gap is 0.3-0.7mm.

[0008] In some embodiments,

[0009] The size of the air gap is the minimum distance between the magnetic conducting part and the valve core.

[0010] In some embodiments,

[0011] Further comprising a coil, the stator core is further provided with a coil accommodating groove inside, the coil is arranged in the coil accommodating groove, one side of the magnetic conducting part has one coil accommodating groove, the other side has another coil accommodating groove, the coil is wound from one coil accommodating groove to another coil accommodating groove, so that at least part of the coil is wound on the magnetic conducting part, the number of turns of the coil is 1200-1600 turns.

[0012] In some embodiments,

[0013] The wire diameter of the coil is 0.24-0.32mm, that is, the diameter of a single enameled wire of the coil is 0.24-0.32mm.

[0014] In some embodiments,

[0015] The valve body includes an inlet passage, an outlet passage, a first communication passage and a second communication passage, one end of the first communication passage communicates with the inlet passage, the other end communicates with the second accommodating groove, one end of the second communication passage communicates with the outlet passage, the other end communicates with the second accommodating groove, the valve core can close the communication between the inlet passage and the outlet passage when covering the second accommodating groove completely, and the valve core can open the communication between the inlet passage and the outlet passage when not covering the second accommodating groove completely.

[0016] In some embodiments,

[0017] The gas passage pore size of the inlet passage and / or the outlet passage ranges from 3.5 to 6.5mm.

[0018] In some embodiments,

[0019] The valve body is provided with at least two second accommodating grooves, the at least two second accommodating grooves are arranged at intervals, each second accommodating groove is communicated with the inlet channel through a first communication channel, and each second accommodating groove is communicated with the outlet channel through a second communication channel.

[0020] In some embodiments,

[0021] The valve core comprises an elastic body and a valve core core, and the elastic body can be connected with the valve core core to apply an elastic force to the valve core core towards the valve body.

[0022] In some embodiments,

[0023] The valve core core is made of 0cr16Si2Pbs magnetic conductive material.

[0024] The utility model also provides an air suspension system which comprises the aforementioned pneumatic electromagnetic valve structure.

[0025] The pneumatic electromagnetic valve structure and the air suspension system have the following beneficial effects:

[0026] 1.The utility model discloses a valve body is provided with the second containing recess that recesses to the direction of being away from the stator core, and the stator core is provided with the first containing recess that recesses to the direction of being away from the valve body, and the two containing recesses are opposite and splice to contain the valve core, so that the valve core part structure is located in the first containing recess, and the valve core at least part structure is located in the second containing recess, can make the valve core move back and forth in the first and second containing recess, thereby cutting off and opening the gas passage of the valve body, realize the purpose of electrically controlling opening and closing of the gas passage, and the air gap size between the magnetic conduction part opposite the valve core on the stator core and the valve core is set to 0.3-0.7mm, when the working air gap increases, the response speed of the valve core is slower, leading to insufficient electromagnetic force, which is due to the increase of air gap reluctance and the decrease of initial electromagnetic force, and the slow rise of electromagnetic force makes the opening time of the valve increase, when the working air gap is large to a certain extent, the solenoid valve will not normally open the solenoid valve due to insufficient magnetic potential, and the small air gap leads to the valve core of the solenoid valve unable to compress the air outlet hole of the valve body when closing, the size of the working air gap not only determines the working capacity and application range of the solenoid valve, but also greatly influences the performance of the solenoid valve, therefore, the air gap size between the magnetic conduction part and the valve core is set to 0.3-0.7mm in the utility model, which can ensure the electromagnetic force while avoiding the situation of unable to compress the air outlet hole of the valve body, avoid air leakage, and thus improve the adjustment accuracy of the pneumatic solenoid valve.

[0027] 2.The utility model discloses further set the number of turns of the coil to 1200-1600 turns, which can avoid the situation of volume increase, power increase and cost increase caused by too large number of turns, and also can avoid the situation of insufficient electromagnetic force and increased coil temperature rise caused by too small number of turns, that is, can realize small size, low cost, improved electromagnetic force and reduced temperature rise at the same time, realize the miniaturization of the pneumatic solenoid valve structure and the improvement of electromagnetic performance; the utility model further sets the wire diameter of the coil to 0.24-0.32mm, which makes the whole coil assembly structure small and ensures the electromagnetic performance; and sets the gas passage hole diameter range of the inlet passage and / or the outlet passage of the valve body to 3.5-6.5mm, forms a more simple gas passage structure, makes the pneumatic solenoid valve have higher adjustment accuracy, and can make the whole vehicle complete slight adjustment to ensure the comfort of passengers. DRAWINGS

[0028] Figure 1 is the system structure diagram of the air suspension system of the utility model;

[0029] Figure 2 is the longitudinal section structure diagram of the pneumatic solenoid valve of the utility model;

[0030] Figure 3 is the structure diagram of the electromagnetic part of the pneumatic solenoid valve of the utility model;

[0031] Figure 4 is theFigure 2 or Figure 3 exploded structural view of the spool in the valve;

[0032] Figure 5 is a bottom view of the pneumatic electromagnetic valve of the utility model;

[0033] Figure 6 is the displacement curve of the spool in the opening process of the pneumatic electromagnetic valve of the utility model under different working air gaps;

[0034] Figure 7 is the displacement curve of the spool in the opening process of the pneumatic electromagnetic valve of the utility model under different coil turns.

[0035] The reference signs are shown as follows:

[0036] 1, valve body; 2, spool; 3, stator core; 4, first accommodating groove; 5, second accommodating groove; 6, magnetic conducting part; 7, coil; 8, coil accommodating groove; 9, inlet channel; 10, outlet channel; 11, first communication channel; 12, second communication channel; 13, elastic body; 14, spool core; 15, attractor; 16, sleeve; 17, pressing plate; 18, rubber plug; 19, magnetic yoke; 20, vehicle frame; 21, vehicle axle frame; 22, vehicle wheel; 23, air spring; 24, shock absorber; 25, height sensor; 26, pneumatic electromagnetic valve; 27, gas storage tank; 28, gas circuit; 29, air gap; 30, air outlet; 31, sound hole. DETAILED DESCRIPTION

[0037] 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 a part of the embodiments of the utility model, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0038] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0039] The foregoing description, for purposes of explanation, sets forth specific values and arrangements of components and steps that are subject to many options. The intent is to be accurate in describing the principles and novel features of the application. Thus, although the application has been described with reference to specific embodiments thereof, it will be apparent to those of ordinary skill in the art that a number of changes can be made to the embodiments described without departing from the spirit and scope of the application. For example, the various features of the application can be combined in any combination, where possible. Accordingly, the scope of the application is to be construed as encompassing modifications and variations of the specific examples described herein, subject only to the conditions of the prior art.

[0040] In the description of the present application, it is necessary to understand that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated by the orientation or position relationship shown in the drawings are generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0041] For the convenience of description, spatial relative terms such as "on", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the example term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used herein is interpreted accordingly.

[0042] In addition, it should be noted that the use of the words "first", "second" and the like to define parts of components is only for the convenience of distinguishing the corresponding parts of components, and the above words have no special meaning unless otherwise stated, therefore, it cannot be understood as a limitation on the protection scope of the present application.

[0043] AsFigures 1-7 The utility model provides a kind of pneumatic solenoid valve structure, it includes:

[0044] Valve body 1, valve core 2 and stator core 3, the stator core 3 is opposite or is connected with the valve body 1, the first accommodating groove 4 is formed on the stator core 3 in the direction away from the valve body 1, the second accommodating groove 5 is formed on the valve body 1 in the direction away from the stator core 3, at least part of structure of the valve core 2 is accommodated in the first accommodating groove 4, at least part of structure of the valve core 2 is accommodated in the second accommodating groove 5, so that the valve core 2 can move in the first accommodating groove 4 and the second accommodating groove 5, to cut off or open the gas passage of the valve body 1, and the stator core 3 includes the magnetic conduction part 6 opposite the valve core 2, and there is air gap 29 between the magnetic conduction part 6 and the valve core 2, the size of the air gap 29 is 0.3~0.7mm.

[0045] The utility model discloses a recessed second accommodating groove is set on valve body in the direction away from stator core, recessed first accommodating groove is set on stator core in the direction away from valve body, two accommodating grooves are opposite and splice, to accommodate valve core, so that valve core part structure is located in first accommodating groove, valve core at least part of structure is located in second accommodating groove, can make that valve core can move back and forth in first and second accommodating groove, to cut off and open the gas passage of valve body, realize the purpose of electric control opening and closing to gas passage, and the air gap size between the magnetic conduction part opposite the valve core on stator core and the valve core is set at 0.3~0.7mm, when working air gap increases, the response speed of valve core is slower, leading to insufficient electromagnetic force, this is because air gap reluctance increases, initial electromagnetic force reduces, electromagnetic force rises slowly, makes the opening time of valve increase, when working air gap is large to certain degree, solenoid valve will not normally open solenoid valve because of insufficient magnetic potential, air gap is too small to cause solenoid valve core to be unable to compress valve body outlet hole when closing, the size of working air gap not only determines the working capacity and application range of solenoid valve, but also greatly influences the performance of solenoid valve, therefore, the air gap size between the magnetic conduction part and the valve core of the utility model is set at 0.3~0.7mm, can guarantee electromagnetic force while avoiding the situation that valve body outlet hole cannot be compressed, avoid gas leakage, to improve the regulation accuracy of pneumatic solenoid valve. Figure 6 As shown.

[0046] The utility model discloses electromagnetic valve working principle: magnetic valve is used for controlling fluid flow and flow rate as automation device. Electromagnetic valve is mainly composed of valve core, armature, electromagnetic coil, valve body, spring etc. Coil power or power off, coil magnetic field produces magnetic force to magnet, and then overcomes the spring elasticity, makes armature drive valve core movement, realizes valve body to close or open. Electromagnetic valve is the important component of many systems, and is widely used in various industries. In the automobile industry, electromagnetic valve is mainly used for the control of automobile's point control system, the control of diesel injection system and the control of automobile gearbox.

[0047] The utility model establishes the simulation model of valve, links up electromagnetic valve circuit model, magnetic circuit model and mechanical model, through calling the parameter of each module, and utilizes the analysis tool, can directly and clearly analyze the change information of suction, displacement, motion speed, current and so on each dynamic quantity. Under normal working condition, the inlet pressure is 0.5MPa before electromagnetic valve opens, and the outlet pressure is 0MPa. Electromagnetic valve working voltage is 24V, sets up t=0s moment coil voltage for 24V (power on), t=0.075s moment coil voltage for 0V (power off), and valve core maximum displacement is 0.5mm, and simulation total time is 0.7s.

[0048] Figure 6 It is the valve core response characteristic curve of the opening and closing process of direct-acting electromagnetic valve when the working air gap is 0.3mm, 0.4mm, 0.5mm, 0.6mm and 0.7mm respectively. The influence of working air gap on electromagnetic valve response characteristic is shown in the following table: Figure 6 It can be seen that: when the working air gap increases, the response speed of the valve core is slower, which is due to the increase of air gap reluctance, the decrease of initial electromagnetic force and the slow rise of electromagnetic force, so that the opening time of the valve is increased. In the closing process, the movement distance of the valve core is lengthened, so that the movement time is lengthened. Therefore, the longer the working air gap is, the longer the valve core stroke is, and the longer the closing time of the electromagnetic valve is. When the working air gap is large enough, the electromagnetic valve will not be able to normally open the electromagnetic valve due to insufficient magnetic potential. The size of the working air gap not only determines the working capacity and application range of the electromagnetic valve, but also greatly affects the performance of the electromagnetic valve.

[0049] In some embodiments,

[0050] The size of the air gap 29 is the minimum distance between the magnetically conductive portion 6 and the valve core 2.

[0051] Magnetic induction intensity is related to air gap, when air gap, i.e. the working air gap of electromagnet, becomes small, the magnetic induction intensity of electromagnet becomes large. The air gap of electromagnetic valve is inversely proportional to electromagnetic suction, and the larger the electromagnetic force is when the air gap tends to zero.

[0052] Figure 6is the spool response characteristic curve of the opening and closing process of the direct-acting electromagnetic valve when the working air gap is 0.3mm, 0.4mm, 0.5mm, 0.6mm and 0.7mm respectively. Figure 6 It can be seen that when the working air gap increases, the response speed of the spool is slower, because the air gap magnetic resistance increases, the initial electromagnetic force decreases, the electromagnetic force rises slowly, and the opening time of the valve increases. When the working air gap is large enough, the electromagnetic valve cannot normally open the electromagnetic valve due to insufficient magnetic potential. The size of the working air gap not only determines the working capacity and application range of the electromagnetic valve, but also greatly affects the performance of the electromagnetic valve.

[0053] In some embodiments,

[0054] Further comprising a coil 7, the stator core 3 is further provided with a coil accommodating groove 8, the coil 7 is arranged in the coil accommodating groove 8, one side of the magnetic conducting part 6 has a coil accommodating groove 8, and the other side has another coil accommodating groove 8, the coil 7 is wound from one coil accommodating groove 8 to another coil accommodating groove 8, so that at least part of the coil 7 is wound on the magnetic conducting part 6, and the number of turns of the coil 7 is 1200-1600 turns.

[0055] The number of turns of the coil is set to 1200-1600 turns, which can avoid the increase of volume, power and cost caused by too many turns, and can also avoid the insufficient electromagnetic force and increased coil temperature rise caused by too few turns, that is, small volume and low cost can be realized, and the electromagnetic force and temperature rise can be improved, and the structure of the pneumatic electromagnetic valve is miniaturized and the electromagnetic performance is improved.

[0056] The increase of the number of turns of the coil can improve the magnetic potential, promote the conversion of electric energy and magnetic energy, thereby enhancing the electromagnetic force and accelerating the response speed, but the inductance of the coil is also increased accordingly, and the response time constant of the current is increased. Figure 7 is the spool response characteristic curve of the opening and process of the direct-acting electromagnetic valve when the number of turns of the coil is 1200, 1300, 1400, 1500 and 1600 respectively. From Figure 7 It can be seen from the figure that the opening time and the closing time of the electromagnetic valve increase with the increase of the number of turns of the coil, but if the number of turns is too small, the electromotive force generated cannot meet the electromagnetic attraction required for the opening of the electromagnetic valve, so the electromagnetic valve cannot be opened, and therefore the number of turns of the coil needs to be optimized, so that the response time and the closing time of the opening of the electromagnetic valve are the shortest, and the electromagnetic force required for reliable operation of the electromagnetic valve is met.

[0057] In some embodiments,

[0058] The wire diameter of the coil 7 is 0.24-0.32 mm, i.e. the diameter of a single enameled wire of the coil 7 is 0.24-0.32 mm.

[0059] The wire diameter of the coil is 0.24-0.32 mm, so that the entire coil assembly is small in structure and the electromagnetic performance is ensured.

[0060] In some embodiments,

[0061] The valve body 1 comprises an inlet channel 9, an outlet channel 10, a first communication channel 11 and a second communication channel 12, one end of the first communication channel 11 is communicated with the inlet channel 9, the other end is communicated with the second accommodating groove 5, one end of the second communication channel 12 is communicated with the outlet channel 10, the other end is communicated with the second accommodating groove 5, when the valve core 2 completely covers the second accommodating groove 5, the inlet channel 9 and the outlet channel 10 can be closed in communication, when the valve core 2 does not completely cover the second accommodating groove 5, the inlet channel 9 and the outlet channel 10 can be opened in communication.

[0062] This is a preferred structure of the valve body of the utility model, through the setting of the first communication channel communicated between the inlet channel and the second accommodating groove, and the setting of the second communication channel communicated between the outlet channel and the second accommodating groove, the purpose of connecting and closing the communication of the inlet channel and the outlet channel can be realized by the up and down movement of the valve core in the second accommodating groove, and the control opening or closing of the gas path is completed.

[0063] In some embodiments,

[0064] The gas path aperture of the inlet channel 9 and / or the outlet channel 10 ranges from 3.5 mm to 6.5 mm.

[0065] The utility model further sets the gas path aperture of the inlet channel and / or the outlet channel of the valve body to range from 3.5 mm to 6.5 mm, forms a more simple gas path structure, so that the pneumatic electromagnetic valve has higher regulation accuracy, can make the whole vehicle complete a small adjustment, and ensures the comfort of passengers.

[0066] In some embodiments,

[0067] The valve body 1 is provided with at least two second accommodating grooves 5, the at least two second accommodating grooves 5 are arranged at intervals, each second accommodating groove 5 is communicated with the inlet channel 9 through a first communication channel 11, and each second accommodating groove 5 is communicated with the outlet channel 10 through a second communication channel 12, the stator core 3, the valve core 2 and the coil 7 form at least part of a structure of a control unit, the control unit has multiple groups, and the control unit is arranged in one-to-one correspondence with the second accommodating grooves 5, that is, each second accommodating groove 5 is provided with a corresponding valve core 2, coil 7 and stator core 3.

[0068] The utility model discloses still through the valve body is provided at least two second accommodating grooves, can with inlet channel and outlet channel communication, and cooperate with the setting of one corresponding control unit in each second accommodating groove, and control unit includes stator core, valve core and coil, can realize that a group of gas path structure is controlled to the on-off of multiple control units, can further improve control precision.

[0069] The electromagnetic valve designed by the utility model is shown in the bottom view as Figure 5 The valve body part is connected with the first coil and the second coil to realize the functions of air inlet and air outlet, the air outlet hole (outlet channel 10) and the air inlet hole (inlet channel 9) in Fig. 5 are connected with the air bag and the gas storage tank through the air pipe respectively, Figure 5 The sound hole 31 for installing the silencer is shown in Fig. 5, which achieves the purpose of noise reduction and silencing. The structure of the internal gas path is simpler, the gas path is shorter and the air hole is smaller, so that the adjustment precision is greatly increased, and the vehicle body posture is more accurately controlled in the adjustment process.

[0070] In some embodiments,

[0071] The valve core 2 includes an elastic body 13 and a valve core core 14, and the elastic body 13 can be connected with the valve core core 14 to exert an elastic force on the valve core core 14 towards the valve body 1.

[0072] The utility model discloses still through the structure of elastic body, can with valve core core, to improve the return action of valve core core movement to the valve body direction and close gas passage.

[0073] In some embodiments,

[0074] The valve core core 14 is made of 0cr16Si2Pbs magnetic conductive material.

[0075] The magnetic conductive material of the core of the electromagnetic valve of the utility model preferably adopts 0cr16Si2Pbs, and the demagnetization effect can be best by using this material.

[0076] The electromagnet part of the electromagnetic valve is preferably composed of an attractor 15, a sleeve 16, a pressing plate 17, a spring (elastic body 13), a valve core iron core 14 and a rubber plug 18. Figure 2 As shown in the figure, the air gap parameter in the electromagnet part of the electromagnetic valve is further preferably designed as 0.5mm, which can not only accelerate the response speed of the electromagnetic valve, but also increase the electromagnetic force. Figure 3 As shown in the figure, the electromagnetic valve is further preferably designed to use a 0.28mm diameter enameled wire as a coil, which is wound around the coil skeleton, and the number of turns of the coil is further preferably designed as 1250 turns. Figure 4 As shown in the figure, the iron core of the electromagnetic valve is a cylindrical material with two upper and lower slots, the first slot is a cylindrical hole for placing the spring, and the spring is pressed onto the air hole of the valve body by the spring force; the second slot is an inverted trapezoidal hole for placing the rubber plug.

[0077] The utility model also provides an air suspension system, which comprises the aforementioned pneumatic electromagnetic valve structure.

[0078] 1. The utility model provides a kind of electromagnetic valve system of commercial vehicle, include gas path portion, coil portion, connector portion and armature portion etc., so that electromagnetic valve device is more compact and small, save use space.The connection port of gas path portion with vehicle air bag and air outlet is M22 general port, and the internal gas path of valve body becomes delicate and small.The coil portion, coil diameter is smaller, and the number of turns is less, so that the whole coil assembly structure is compact.The armature assembly portion, its iron core, sleeve, attractor are reduced in structure under the condition that function meets.

[0079] 2. The electromagnetic valve of the utility model has more simple gas path structure, and its aperture is also more delicate, so that it has higher adjustment accuracy, can make whole vehicle complete slight adjustment, and ensure passenger's comfort.

[0080] The utility model has the following beneficial effects:

[0081] 1. The adjustment accuracy of the electromagnetic valve of the utility model is higher, and the appearance structure of the pneumatic electromagnetic valve of the utility model of commercial vehicle is more compact and small, convenient to install, solves the problem that the appearance structure of existing pneumatic electromagnetic valve is relatively large in size and inconvenient to install.

[0082] 2. The gas path of the electromagnetic valve of the utility model is more simple, and its aperture is more delicate, so that control accuracy is increased, solves the problem that the gas path structure of existing pneumatic electromagnetic valve is complex and aperture is relatively large, and adjustment accuracy is not high.

[0083] The whole vehicle electromagnetic valve gas circuit further optimally adopts a single 2-position 2-way valve distributed in each position of the whole vehicle FL, FR, RL and RR, which shortens the gas circuit of the electromagnetic valve and the air bag, shortens the response time, and realizes single axle adjustment and side kneeling of the vehicle.

[0084] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application. The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for the ordinary skilled in the art, without departing from the technical principle of the present application, a number of improvements and modifications can be made, which should also be considered as the protection scope of the present application.

Claims

1. A pneumatic solenoid valve structure, characterized by: It comprises: a valve body (1), a valve core (2) and a stator core (3), the stator core (3) is arranged opposite or adjacent to the valve body (1), a first accommodating groove (4) is formed on the stator core (3) in a direction away from the valve body (1), a second accommodating groove (5) is formed on the valve body (1) in a direction away from the stator core (3), at least part of the structure of the valve core (2) is accommodated in the first accommodating groove (4), at least part of the structure of the valve core (2) is accommodated in the second accommodating groove (5), so that the valve core (2) can move in the first accommodating groove (4) and the second accommodating groove (5) to cut off or open the gas passage of the valve body (1), and the stator core (3) comprises a magnetic conducting part (6) opposite to the valve core (2), and there is an air gap (29) between the magnetic conducting part (6) and the valve core (2), the size of the air gap (29) is 0.3-0.7mm.

2. The structure of the pneumatic electromagnetic valve according to claim 1, wherein: the size of the air gap (29) is the minimum distance between the magnetic conducting part (6) and the valve core (2).

3. The structure of the pneumatic electromagnetic valve according to claim 1, wherein: it further comprises a coil (7), the stator core (3) further comprises a coil accommodating groove (8), the coil (7) is arranged in the coil accommodating groove (8), one side of the magnetic conducting part (6) has one coil accommodating groove (8), the other side has another coil accommodating groove (8), the coil (7) is wound from one coil accommodating groove (8) to another coil accommodating groove (8), so that at least part of the coil (7) is wound on the magnetic conducting part (6), the number of turns of the coil (7) is 1200-1600 turns.

4. The structure of the pneumatic electromagnetic valve according to claim 3, wherein: the wire diameter of the coil (7) is 0.24-0.32mm, that is, the diameter of a single enameled wire of the coil (7) is 0.24-0.32mm.

5. The structure of the pneumatic electromagnetic valve according to claim 3, wherein: the valve body (1) comprises an inlet channel (9), an outlet channel (10), a first communication channel (11) and a second communication channel (12), one end of the first communication channel (11) communicates with the inlet channel (9), the other end communicates with the second accommodating groove (5), one end of the second communication channel (12) communicates with the outlet channel (10), the other end communicates with the second accommodating groove (5), when the valve core (2) completely covers the second accommodating groove (5), it can close the communication between the inlet channel (9) and the outlet channel (10), when the valve core (2) does not completely cover the second accommodating groove (5), it can open the communication between the inlet channel (9) and the outlet channel (10).

6. The structure of the pneumatic electromagnetic valve according to claim 5, wherein: the gas path aperture of the inlet channel (9) and / or the outlet channel (10) ranges from 3.5 to 6.5mm.

7. The pneumatic electromagnetic valve structure according to claim 5, characterized in that: at least two of the second accommodating grooves (5) are arranged on the valve body (1) and are spaced apart, each of the second accommodating grooves (5) is communicated with the inlet channel (9) through a first communication channel (11), and each of the second accommodating grooves (5) is communicated with the outlet channel (10) through a second communication channel (12), the stator core (3), the valve core (2) and the coil (7) constitute at least part of a control unit, there are multiple control units, and the control units are arranged one by one with the second accommodating grooves (5), that is, each of the second accommodating grooves (5) is provided with a corresponding valve core (2), coil (7) and stator core (3).

8. The pneumatic electromagnetic valve structure according to claim 1, characterized in that: the valve core (2) comprises an elastic body (13) and a valve core core (14), and the elastic body (13) can be connected with the valve core core (14) to apply an elastic force to the valve core core (14) towards the valve body (1).

9. The pneumatic electromagnetic valve structure according to claim 8, characterized in that: the valve core core (14) is made of 0cr16Si2Pbs magnetic conductive material.

10. An air suspension system, characterized in that: it comprises the pneumatic electromagnetic valve structure according to any one of claims 1-9.

Images