Linear pressure relief solenoid valve

Abstract

The application belongs to the technical field of electromagnetic valves, and discloses a linear pressure relief electromagnetic valve, which comprises a shell, the shell is provided with an air inlet, the shell is provided with a tapered pressure relief hole which is in communication with the air inlet, the shell is provided with a fixed seat step which is in communication with the tapered pressure relief hole, the fixed seat step is provided with a fixed seat, the fixed seat is provided with a mounting column at the center position, the mounting column is provided with a through hole, the mounting column is provided with a coil, the shell is provided with a sealing plate step, the shell is provided with a countersunk head step, the countersunk head step is provided with two pin columns, the sealing plate step is provided with a sealing plate, the sealing plate is provided with a silicon steel plate, the sealing plate is provided with a countersunk head block, the countersunk head block is installed on the countersunk head step through the pin columns, the sealing plate is connected with the countersunk head block in an inclined mode, the sealing plate and the countersunk head block are provided with an elastic strip at the connection position, and the shell is provided with a PCB.

Description

Technical Field

[0001] This invention belongs to the field of electromagnetic valve technology, and specifically relates to a linear pressure relief electromagnetic valve. Background Technology

[0002] With the development and progress of science and technology, people's requirements for things have changed from the old mindset of "good enough" to a more refined one. Only by constantly improving or innovating ideas and creating new forms to increase the added value of products can they survive the fierce market competition.

[0003] Most electronic blood pressure monitors currently measure blood pressure through three processes: automatic inflation, slow depressurization to measure blood pressure, and rapid depressurization to display the result. The slow depressurization to measure blood pressure is particularly crucial, directly determining the accuracy and comfort of the monitor. For electronic blood pressure monitors using the oscillometric or Korotkoff sound method to accurately and comfortably measure the subject's blood pressure, a linear depressurization valve is essential.

[0004] However, existing pressure relief valves are complex in structure, difficult to manufacture, not compact, easily damaged, heavy, and difficult to use, and their linear pressure relief effect is not ideal. Summary of the Invention

[0005] In view of the problems mentioned in the background art above, the object of the present invention is to provide a linear pressure relief solenoid valve.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0007] A linear pressure relief solenoid valve includes a housing, an air inlet, a conical pressure relief hole communicating with the air inlet, a micro-sized orifice, a fixed seat step communicating with the conical pressure relief hole, a fixed seat mounted on the fixed seat step, the fixed seat having a U-shaped cross-section, a mounting post connected to the center of the fixed seat, the mounting post having a through hole, a coil mounted on the mounting post, a sealing plate step communicating with the fixed seat step, a countersunk step communicating with the sealing plate step, two pins on the countersunk step, a sealing plate placed on the sealing plate step, a silicon steel plate mounted on the sealing plate, a countersunk block connected to the sealing plate, the countersunk block being mounted on the countersunk step via the pins, the sealing plate and the countersunk block being inclinedly connected, an elastic strip connected at the connection position between the sealing plate and the countersunk block, and a PCB board mounted on the housing.

[0008] Furthermore, the outer casing is connected to two terminals, and the PCB board has slots corresponding to the positions of the terminals. This design limits the installation direction and position of the PCB board, ensuring the accuracy of subsequent circuit connections.

[0009] Furthermore, the outer shell is connected to four fixing posts, and the PCB board has post holes corresponding to the positions of the fixing posts. This design limits the installation direction and position of the PCB board, ensuring the accuracy of subsequent circuit connections.

[0010] Furthermore, the outer casing is provided with wiring slots, a design that facilitates wiring.

[0011] Furthermore, the output end of the coil is soldered to the PCB board. This design ensures a stable connection and prevents wire tangling.

[0012] The beneficial effects of using the present invention are as follows:

[0013] By employing the structural design of this invention, energizing the coil causes it to generate magnetic force, which attracts the silicon steel plate, thereby sealing the sealing plate against the fixed seat and achieving the purpose of slow pressure relief.

[0014] The design of the fixed seat step, sealing plate step, and countersunk step in this invention makes the installation of the sealing plate and fixed seat more compact, with strong integration, less prone to displacement and shaking, less prone to damage, and ensures service life.

[0015] The present invention has a simple and reasonable structure, is lightweight and compact, and is easy to use and manufacture. Attached Figure Description

[0016] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of a linear pressure relief solenoid valve according to the present invention;

[0018] Figure 2 This is an exploded structural diagram of an embodiment of a linear pressure relief solenoid valve according to the present invention;

[0019] Figure 3 This is a cross-sectional structural schematic diagram of an embodiment of a linear pressure relief solenoid valve according to the present invention;

[0020] The symbols for the main components are explained below:

[0021] 1. Outer shell; 2. Air inlet; 3. Conical pressure relief hole; 31. Micro-hole; 4. Fixing base step; 5. Fixing base; 6. Mounting post; 7. Through hole; 8. Coil; 9. Sealing plate step; 10. Countersunk step; 11. Pin; 12. Sealing plate; 13. Silicon steel plate; 14. Countersunk block; 15. Elastic strip; 16. PCB board; 161. Groove; 162. Post hole; 17. Terminal; 18. Fixing post; 19. Wiring groove. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1 , Figure 2 , Figure 3 As shown, a linear pressure relief solenoid valve of the present invention includes a housing 1, an air inlet 2, a conical pressure relief hole 3 communicating with the air inlet 2, a micro-sized hole 31, a fixed seat step 4 communicating with the conical pressure relief hole 3, a fixed seat 5 mounted on the fixed seat step 4, the fixed seat 5 having a U-shaped cross-section, a mounting post 6 connected to the center of the fixed seat 5, a through hole 7 on the mounting post 6, and a coil 8 mounted on the mounting post 6. The housing 1 has a connection to the fixed seat step 4. The sealing plate step 9, the outer shell 1 is provided with a countersunk step 10 communicating with the sealing plate step 9, the countersunk step 10 is provided with two pins 11, the sealing plate step 9 is provided with a sealing plate 12, the sealing plate 12 is installed with a silicon steel plate 13, the sealing plate 12 is connected to a countersunk block 14, the countersunk block 14 is installed on the countersunk step 10 through the pins 11, the sealing plate 12 and the countersunk block 14 are connected at an angle, the connection position of the sealing plate 12 and the countersunk block 14 is connected with an elastic strip 15, and the outer shell 1 is installed with a PCB board 16.

[0024] In this implementation example, when using a linear pressure relief solenoid valve, when air pressure enters the conical pressure relief hole 3 through the air inlet 2, under the effect of the elastic strip 15, the sealing plate 12 does not seal the fixed seat 5, and the air pressure is discharged from the through hole 7. When slow pressure relief is required, the coil 8 is energized through the PCB board 16, and the coil 8 generates magnetic force to attract the silicon steel plate 12. The sealing plate 12 then seals the fixed seat 5, and the pressure is discharged from the micro-hole 31, thus slowing down the pressure relief and achieving the purpose of linear pressure relief. Conversely, when the coil 8 is not energized, the sealing plate 12 will leave the fixed seat 5 under the effect of the elastic strip 15.

[0025] Preferably, the outer casing 1 is connected to two terminals 17, and the PCB board 16 is provided with slots 161 corresponding to the positions of the terminals 17. This design limits the installation direction and position of the PCB board 16, ensuring the accuracy of subsequent circuit connections. In fact, the method of limiting the installation direction and position of the PCB board 16 can also be considered according to specific circumstances.

[0026] The preferred housing 1 is connected to four fixing posts 18. The PCB board 16 is provided with post holes 162 corresponding to the positions of the fixing posts 18. This design limits the installation direction and position of the PCB board 16, ensuring the accuracy of subsequent circuit connections. In fact, the number of fixing posts 18 can also be considered according to the specific situation.

[0027] The preferred housing 1 is provided with a wiring slot 19. This design facilitates wiring. In fact, the wiring method can also be considered according to the specific situation.

[0028] The output end of the preferred coil 8 is soldered to the PCB board 16. This design ensures a stable connection and prevents wire tangling. In practice, the fixing method of the output end of the coil 8 can also be considered depending on the specific situation.

[0029] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A linear pressure relief solenoid valve, comprising a housing (1), characterized in that: The outer shell (1) is provided with an air inlet (2), the outer shell (1) is provided with a conical pressure relief hole (3) communicating with the air inlet (2), the outer shell (1) is provided with a micro-hole (31), the outer shell (1) is provided with a fixed seat step (4) communicating with the conical pressure relief hole (3), the fixed seat step (4) is provided with a fixed seat (5), the fixed seat (5) has a U-shaped cross section, the fixed seat (5) is connected to a mounting post (6) at the center position, the mounting post (6) is provided with a through hole (7), the mounting post (6) is provided with a coil (8), the outer shell (1) is provided with a sealing plate step (9) communicating with the fixed seat step (4), the outer shell The shell (1) is provided with a countersunk step (10) communicating with the sealing plate step (9). The countersunk step (10) is provided with two pins (11). The sealing plate step (9) is provided with a sealing plate (12). The sealing plate (12) is provided with a silicon steel plate (13). The sealing plate (12) is connected to a countersunk block (14). The countersunk block (14) is installed on the countersunk step (10) through the pins (11). The sealing plate (12) and the countersunk block (14) are connected at an angle. An elastic strip (15) is connected at the connection position between the sealing plate (12) and the countersunk block (14). The shell (1) is provided with a PCB board (16).

2. The linear pressure relief solenoid valve according to claim 1, characterized in that: The outer casing (1) is connected to two terminals (17), and the PCB board (16) is provided with a slot (161) corresponding to the position of the terminal (17).

3. A linear pressure relief solenoid valve according to claim 2, characterized in that: The outer shell (1) is connected to four fixed posts (18), and the PCB board (16) is provided with post holes (162) corresponding to the positions of the fixed posts (18).

4. A linear pressure relief solenoid valve according to claim 3, characterized in that: The outer casing (1) is provided with a wiring slot (19).

5. A linear pressure relief solenoid valve according to claim 4, characterized in that: The output end of the coil (8) is soldered to the PCB board (16).

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