Electromagnetic valve and valve block

Abstract

The invention provides an electromagnetic valve and a valve block. The electromagnetic valve comprises a sleeve and a coil assembly, and the coil assembly is arranged around the sleeve; the armature piece is arranged in the sleeve in an axial moving manner; the stop iron piece is fixed at one end of the sleeve; the spring piece is arranged at one end, far away from the stop iron piece, of the armature piece; when the coil assembly is powered on, generated electromagnetic force enables the armature piece to move towards the stop iron piece, elastic force of the spring piece is overcome, and a valve port of the electromagnetic valve is opened. When the coil assembly is powered off, elastic force of the spring piece enables the armature piece to be far away from the stop iron piece, and the valve port is closed. The electromagnetic valve solves the technical problems that in an existing electromagnetic valve, a reset spring is arranged between an armature and stop iron, the effective sectional area of an iron core is reduced through slotting, and in order to guarantee electromagnetic force, the size of the iron core has to be increased, so that the size of the electromagnetic valve is increased, and occupied space is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve and a valve block. BACKGROUND

[0002] With the continuous development of the automobile industry towards electrification, intelligence and high-end comfort, air suspension systems are increasingly widely used due to their obvious advantages. In the system, the air distribution valve is a core electromagnetic element for controlling the flow direction of air, and its performance is crucial. At present, the existing electromagnetic valves generally set the return spring at the center position between the armature and the stopper. This structure forces the core center area to be slotted to accommodate the spring, thereby reducing the effective magnetic cross-sectional area of the core and reducing the electromagnetic force that can be generated by the unit current. In order to meet the required electromagnetic force for work, it is often necessary to increase the outer diameter size of the core, which will directly lead to the increase of the overall size of the electromagnetic valve and the increase of the occupied space, which is not conducive to the miniaturization and compact design of the system.

[0003] The existing electromagnetic valve sets the return spring between the armature and the stopper, and the slotting reduces the effective cross-sectional area of the core. In order to ensure the electromagnetic force, the size of the core must be increased, which leads to the increase of the volume of the electromagnetic valve and the increase of the occupied space. SUMMARY

[0004] The present application solves the technical problem that the existing electromagnetic valve sets the return spring between the armature and the stopper, the slotting reduces the effective cross-sectional area of the core, in order to ensure the electromagnetic force, the size of the core must be increased, which leads to the increase of the volume of the electromagnetic valve and the increase of the occupied space. By setting the spring member at the end of the armature member away from the stopper member, the outer diameter of the armature is effectively reduced, thereby reducing the overall size of the electromagnetic valve and reducing the production cost.

[0005] To solve the above problems, the present application provides an electromagnetic valve, comprising: a sleeve and a coil assembly, the coil assembly being arranged around the sleeve; an armature member, the armature member being axially movably arranged in the sleeve; a stopper member, the stopper member being fixed at one end of the sleeve; a spring member, the spring member being arranged at the end of the armature member away from the stopper member; wherein when the coil assembly is powered, the electromagnetic force generated by the coil assembly moves the armature member towards the stopper member, overcoming the elastic force of the spring member, and the valve port of the electromagnetic valve is opened; when the coil assembly is powered off, the elastic force of the spring member moves the armature member away from the stopper member, and the valve port is closed.

[0006] Compared with the prior art, the technical effects achieved by the technical scheme are: by arranging the spring member at the end of the armature member away from the shield member, the spring member no longer occupies the space between the armature and the shield, the effective cross-sectional area of the core is maintained, thereby avoiding the problem of insufficient electromagnetic force without increasing the size of the core; and this makes the overall structure of the electromagnetic valve more compact and smaller in size, so that the electromagnetic valve can save more space when installed, thereby improving the flexibility of use.

[0007] In a possible design, the spring member is a tower spring.

[0008] Further, the end of the armature member away from the shield member is provided with a first support portion protruding radially; the inner wall of the sleeve is formed with a second support portion; wherein the spring member is accommodated between the first support portion and the second support portion, and the two ends thereof abut against the first support portion and the second support portion respectively.

[0009] Compared with the prior art, the technical effects achieved by the technical scheme are: the tower spring can effectively avoid twisting and deviation of the spring during operation under the support of the radial support portion, thereby ensuring the stability of the spring during compression and release and improving the reliability of the electromagnetic valve. Among them, compared with the traditional spring, the tower spring has higher elastic force and good linear characteristics, and can provide larger elastic force in a relatively small space; when the tower spring is sleeved on the end of the armature member, the electromagnetic valve can achieve faster response when opening and closing, thereby improving the working efficiency; and since the two ends of the spring member are supported respectively, the load received can be evenly distributed, thereby reducing local wear and fatigue and prolonging the service life of the spring, which helps to reduce maintenance costs.

[0010] In a possible design, the electromagnetic valve further comprises a nozzle, and the nozzle is fixed with the sleeve by riveting.

[0011] Compared with the prior art, the technical effects achieved by the technical scheme are: the nozzle is fixed with the sleeve by riveting, and the nozzle can be processed and inspected as an independent part first, and then assembled with the sleeve. This allows the key dimensions of each nozzle to be quickly and accurately inspected before assembly, ensuring that all parts put into assembly are qualified products. Moreover, by separating the production and manufacture of the nozzle and the sleeve, the production cost can be effectively reduced and the production efficiency can be improved.

[0012] In a possible design, the end of the armature member close to the nozzle is provided with a mounting groove, and a sealing member is embedded in the mounting groove.

[0013] Compared with existing technologies, the technical advantages achieved by this solution are as follows: the seal, embedded in the mounting groove, maintains a tight fit with the nozzle when the solenoid valve is closed, reliably blocking the fluid passage, preventing media leakage, and improving the sealing reliability of the solenoid valve. Simultaneously, the structural design of the mounting groove provides radial restraint for the seal, preventing it from shifting or falling off during long-term reciprocating motion, ensuring the stability and durability of the sealing effect, and thus extending the service life of the solenoid valve.

[0014] This application provides a valve block, which includes a housing, a pressure sensor, and a plurality of solenoid valves. An installation space is formed inside the housing, and the pressure sensor and the plurality of solenoid valves are inserted into the installation space.

[0015] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: The valve block of this application includes the solenoid valve of any technical solution of this application, and therefore possesses all the beneficial effects of the solenoid valve of any technical solution of this application. By centrally installing the pressure sensor and the solenoid valve in one valve block, space utilization is optimized and system complexity is reduced. The pressure sensor integrated in the valve block can monitor the working pressure in real time, and in conjunction with the control of the solenoid valve, it can achieve instant feedback on the system's operating status, improving the system's response speed and operational accuracy.

[0016] In one possible design, the valve block also includes a PCB circuit board, and the pressure sensor and multiple solenoid valves are electrically connected to the PCB circuit board.

[0017] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by directly connecting the pressure sensor and solenoid valve to the PCB, the probability of failure caused by poor contact or loose connection can be reduced, thereby enhancing the overall reliability and stability of the system; in addition, the centralized electrical connection and unified control of the pressure sensor and multiple solenoid valves simplifies the internal wiring structure of the valve block, reduces the signal transmission path length, thereby reducing the risk of electromagnetic interference and improving the stability and response speed of signal transmission.

[0018] In one possible design, a first sealing ring is provided between the nozzle and the housing of the solenoid valve, and the first sealing ring is sleeved on the outside of the nozzle.

[0019] Furthermore, a second sealing ring is provided between the sleeve and the housing, and the second sealing ring is sleeved on the outside of the sleeve.

[0020] Compared with existing technologies, the technical effects achieved by this solution are as follows: setting up a first sealing ring and a second sealing ring can effectively prevent fluid leakage and ensure that the connection between the nozzle and the housing, and between the sleeve and the housing, is completely sealed under high pressure or high flow rate conditions; this can significantly reduce the risk of oil or gas leakage and improve the reliability of the system; at the same time, the setting of double sealing rings forms multiple sealing protections, further improving the redundancy of the sealing structure, thereby extending the overall service life of the equipment.

[0021] In one possible design, the bottom of the housing has multiple connectors for connecting air tubes.

[0022] Compared with existing technologies, the technical benefits of this solution are as follows: By setting multiple connectors at the bottom of the housing for connecting air pipes, centralized and modular connections of the air pipes can be achieved, simplifying the assembly process of the valve block and the external piping system and improving installation efficiency. Simultaneously, the uniformly laid-out connector design facilitates pipeline routing planning, reduces pipeline interference, improves the overall space utilization and maintenance convenience of the system, and reduces the risk of leakage or operational errors caused by chaotic pipeline connections. Attached Figure Description

[0023] Figure 1 A schematic diagram of the structure of a solenoid valve provided in this application embodiment. Figure One ; Figure 2 A schematic diagram of the structure of a solenoid valve provided in this application embodiment. Figure Two ; Figure 3 A schematic diagram of the structure of a solenoid valve provided in this application embodiment. Figure Three ; Figure 4 A schematic diagram of the structure of a solenoid valve provided in this application embodiment. Figure Four ; Figure 5 A schematic diagram of the valve block provided in the embodiments of this application. Figure One ; Figure 6 A schematic diagram of the valve block provided in the embodiments of this application. Figure Two ; Figure 7 A schematic diagram of the valve block provided in the embodiments of this application. Figure Three .

[0024] Explanation of reference numerals in the attached figures: 11-Sleeve; 12-Coil assembly; 13-Armature; 14-Stop; 15-Spring; 16-First support; 17-Second support; 18-Nozzle; 19-Mounting groove; 20-Seal; 21-Housing; 22-Pressure sensor; 23-PCB circuit board; 24-First sealing ring; 25-Second sealing ring; 26-Connector. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, specific embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0026] See Figures 1 to 4 This application provides a solenoid valve, comprising: a sleeve 11 and a coil assembly 12, the coil assembly 12 being disposed around the sleeve 11; an armature 13, the armature 13 being axially movable within the sleeve 11; a stop 14, the stop 14 being fixed at one end of the sleeve 11; and a spring 15, the spring 15 being disposed at the end of the armature 13 away from the stop 14; wherein, when the coil assembly 12 is energized, the generated electromagnetic force causes the armature 13 to move toward the stop 14, overcoming the elastic force of the spring 15, thereby opening the valve port of the solenoid valve; when the coil assembly 12 is de-energized, the elastic force of the spring 15 causes the armature 13 to move away from the stop 14, thereby closing the valve port.

[0027] Specifically, in this embodiment, the coil assembly 12 is arranged around the sleeve 11; the armature 13 and the stop 14 are disposed inside the sleeve 11, wherein the stop 14 is fixedly disposed at the end of the sleeve 11 away from the nozzle 18, and the armature 13 is axially movable disposed inside the sleeve 11 at the end near the nozzle 18; the spring 15 is sleeved on the end of the armature 13 away from the stop 14, with one end of the spring 15 contacting the end of the armature 13 and the other end contacting the inside of the sleeve. When the coil assembly 12 is energized, the generated electromagnetic force enables the armature 13 to overcome the elastic force of the spring 15 and move towards the stop 14, thereby opening the valve port of the solenoid valve; when the coil assembly 12 is de-energized, the electromagnetic force between the stop 14 and the armature 13 disappears, and the armature 13 will move away from the stop 14 under the drive of the restoring elastic force of the spring 15, thereby closing the valve of the solenoid valve.

[0028] In one embodiment of this application, the spring member 15 is a tower-shaped spring.

[0029] Specifically, in this embodiment, the spring member 15 is a tower-shaped spring. The tower-shaped spring can adapt to the shape of the end of the armature member 13, which can effectively prevent the spring member 15 from twisting and shifting during operation, thereby ensuring the stability of the spring during compression and release and improving the reliability of the solenoid valve. In other embodiments, the spring member 15 can also be a spring of other shapes.

[0030] In one embodiment of this application, the armature 13 is provided with a radially protruding first support portion 16 at the end away from the stop member 14; the inner wall of the sleeve 11 is formed with a second support portion 17; wherein, the spring member 15 is accommodated between the first support portion 16 and the second support portion 17, and its two ends abut against the first support portion 16 and the second support portion 17 respectively.

[0031] Specifically, in this embodiment, the end of the armature 13 away from the stop 14 protrudes radially to form a first support portion 16, and the sleeve 11 is bent radially outward to form a second support portion 17; wherein, the larger diameter end of the spring 15 abuts against the second support portion 17, and the smaller diameter end of the spring 15 abuts against the first support portion 16; when the armature 13 moves toward the stop 14, the first support portion 16 will compress the spring 15.

[0032] In one embodiment of this application, the solenoid valve further includes a nozzle 18, which is fixed to the sleeve 11 by riveting.

[0033] Specifically, in this embodiment, the nozzle 18 and the sleeve 11 are fixed by riveting; the nozzle 18 and the sleeve 11 are processed and inspected as separate parts, which can achieve 100% full inspection of the dimensions of key areas, thereby ensuring that all parts put into assembly are qualified products.

[0034] In one embodiment of this application, the armature 13 is provided with a mounting groove 19 at one end near the nozzle 18, and a sealing member 20 is embedded in the mounting groove 19.

[0035] Specifically, in this embodiment, the sealing element 20 can be made of rubber; a mounting groove 19 is provided at the center of the end of the armature 13 near the nozzle 18, and the sealing element 20 is embedded in the mounting groove 19. When the armature 13 moves toward the nozzle 18 under the action of the spring 15 and finally presses, the sealing element 20 is squeezed and forms an effective sealing contact surface with the valve port on the nozzle 18.

[0036] join Figures 5 to 7 This application also provides a valve block, which includes a housing 21, a pressure sensor 22 and a plurality of solenoid valves 10. An installation space is formed in the housing 21, and the pressure sensor 22 and the plurality of solenoid valves 10 are inserted into the installation space.

[0037] Specifically, in this embodiment, an installation space is formed within the housing 21, and the pressure sensor 22 and multiple solenoid valves 10 are inserted into the installation space. Five solenoid valves 10 and one pressure sensor 22 can be installed within the valve block; in other embodiments, other numbers of solenoid valves 10 and pressure sensors 22 can be installed depending on the specific application. The pressure sensor 22 allows for real-time monitoring of the working pressure, and in conjunction with the control of the solenoid valves, enables immediate feedback on the system's operating status.

[0038] In one embodiment of this application, the valve block further includes a PCB circuit board 23, and the pressure sensor 22 and a plurality of solenoid valves 10 are electrically connected to the PCB circuit board 23.

[0039] Specifically, in this embodiment, the valve block also includes a PCB circuit board 23, which is disposed at the top of the mounting space of the housing 21, and the five solenoid valves 10 and the pressure sensor 22 are directly connected to the PCB circuit board 23.

[0040] In one embodiment of this application, a first sealing ring 24 is provided between the nozzle 18 of the solenoid valve 10 and the housing 21, and the first sealing ring 24 is sleeved on the outside of the nozzle 18.

[0041] A second sealing ring 25 is provided between the sleeve 11 and the housing 21, and the second sealing ring 25 is sleeved on the outside of the sleeve 11.

[0042] Specifically, in this embodiment, the first sealing ring 24 is sleeved on the outside of the nozzle 18 and disposed between the housing 21 and the nozzle 18, preventing air leakage between the nozzle 18 and the housing 21. The second sealing ring 25 is sleeved on the outside of the sleeve 11 and disposed between the sleeve 11 and the housing 21, preventing air leakage between the sleeve 11 and the housing 21. By providing multiple seals, the overall structure of the valve block is made more stable, ensuring stable operation of the valve block over a long period of time.

[0043] In one embodiment of this application, the bottom of the housing 21 is provided with a plurality of connectors 26 for connecting air pipes.

[0044] Specifically, by setting multiple connectors 26 for connecting air pipes at the bottom of the housing 21, centralized and modular connection of air pipes can be achieved, simplifying the assembly process of the valve block and the external pipeline system and improving installation efficiency.

[0045] While this application discloses the above information, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of this application; therefore, the scope of protection of this application shall be determined by the scope defined in the claims.

Claims

1. An electromagnetic valve characterized by comprising: The electromagnetic valve comprises: a sleeve (11) and a coil assembly (12) arranged around the sleeve (11); an armature piece (13) arranged axially movably in the sleeve (11); a back iron piece (14) fixed at one end of the sleeve (11); a spring piece (15) arranged at one end of the armature piece (13) away from the back iron piece (14); wherein when the coil assembly (12) is powered, the electromagnetic force generated causes the armature piece (13) to move towards the back iron piece (14), overcoming the elastic force of the spring piece (15), so that the valve port is opened; when the coil assembly (12) is powered off, the elastic force of the spring piece (15) causes the armature piece (13) to move away from the back iron piece (14), so that the valve port is closed.

2. The electromagnetic valve according to claim 1, characterized by The spring piece (15) is a tower spring.

3. The electromagnetic valve according to claim 1 or 2, characterized by The armature piece (13) is provided with a radially protruding first support portion (16) at one end away from the back iron piece (14); the inner wall of the sleeve (11) is formed with a second support portion (17); wherein the spring piece (15) is accommodated between the first support portion (16) and the second support portion (17), and the two ends thereof abut against the first support portion (16) and the second support portion (17) respectively.

4. The electromagnetic valve according to claim 1, characterized by The electromagnetic valve further comprises a nozzle (18) fixed with the sleeve (11) by riveting.

5. The electromagnetic valve according to claim 4, characterized by The armature piece (13) is provided with a mounting groove (19) at one end close to the nozzle (18), and a sealing piece (20) is embedded in the mounting groove (19).

6. A valve block characterized by The valve block comprises a housing (21), a pressure sensor (22) and a plurality of electromagnetic valves (10), the housing (21) is formed with a mounting space, and the pressure sensor (22) and the plurality of electromagnetic valves (10) are inserted into the mounting space.

7. The valve block of claim 6, wherein, The valve block further comprises a PCB circuit board (23), and the pressure sensor (22) and the plurality of electromagnetic valves (10) are electrically connected with the PCB circuit board (23).

8. The valve block of claim 6, wherein, A first sealing ring (24) is arranged between the nozzle (18) of the electromagnetic valve (10) and the housing (21), and the first sealing ring (24) is sleeved outside the nozzle (18).

9. The valve block of claim 6, wherein, A second sealing ring (25) is arranged between the sleeve (11) and the housing (21), and the second sealing ring (25) is sleeved outside the sleeve (11).

10. The valve block of claim 6, wherein, A plurality of connectors (26) for connecting air pipes are arranged at the bottom of the housing (21).

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