JP3195464U - Electromagnetic air valve - Google Patents

Abstract

[PROBLEMS] To apply to an air bag type intake / exhaust system in an automobile seat, integrate three types of functions of intake, backflow prevention and exhaust, and to prevent backflow as it is after filling with air, power consumption and parts manufacturing cost An electromagnetic air valve that can reduce the pressure is provided. An electromagnetic air valve includes a shell body, and the shell body includes a backflow prevention valve, a self-holding solenoid valve rod, and an air-filled tube for holding the open state in order from the intake end to the exhaust end. 23, and a leak port 24 that holds the closed state through the self-holding solenoid valve rod is installed. When the intake passage 20 is inhaled, the air filling device 3 can be directly filled with air through the backflow prevention valve and the air filling tube. When the intake is stopped, the air pressure in the air filling device is maintained by the backflow prevention action of the backflow prevention valve. When the self-holding solenoid valve rod moves under the excitation action of the coil, the intake flow path can be blocked, and at the same time, the leak opening is opened, and the air in the air filling device passes through the air filling tube from the leak opening. Discharged. [Selection] Figure 3

Description

  The present invention relates to an electromagnetic air valve used in an intake / exhaust system, and relates to an electromagnetic air valve that can prevent backflow as it is after filling air into an air filling device, bypasses exhaust at startup, and saves power consumption. .

In a general intake / exhaust system, three valve bodies are sequentially installed in an air-filled pipe between an air pump and an air-filling device (such as an air bag) to control the intake / exhaust.
The three valves described above are a backflow prevention valve, an intake valve that can control air filling into the airbag, and an exhaust valve that bypasses the air filling pipe.

The intake / exhaust system includes an electric control module.
The electric control module controls the operation of the intake valve, the exhaust valve, and the air pump, so that the air pump can fill the air bag with air.
Thus, the user can adjust the degree of saturation of the airbag by means of the electric control module.

  The above-described backflow prevention valve is a one-way valve that can only be filled with one-way air to the air filling end, and after the air pump stops, it prevents leakage of air in the airbag, thereby Maintain air saturation.

The intake valve and the exhaust valve are usually electromagnetic valves that are controlled using the coil excitation principle.
When the intake valve is driven by the excitation of the coil by the electric control module, the air pump fills the air bag with air.
When the exhaust valve is driven by the excitation of the coil by the electric control module, the air in the airbag is discharged.

As can be seen from the description of the structure described above, in the airbag assembly, the intake valve and the exhaust valve are controlled by controlling the two valves, the intake valve and the exhaust valve, and the backflow prevention valve is combined to provide the air bag after air filling. Maintains saturation.
When a large number of airbag assemblies are installed, it is necessary to install and control a backflow prevention valve, an intake valve, and an exhaust valve in all the airbag assemblies.
Therefore, the space for arranging the parts is expanded, and the ratio of maintenance due to parts failure is also increased.

Furthermore, since the operation of the intake valve and the exhaust valve is controlled separately, the power consumption is not small.
If the intake / exhaust system is installed in an environment where energy is limited such as in an automobile, the burden is not small.

  The electromagnetic air valve provided by the present invention can integrate three functions of intake, backflow prevention, and exhaust, and can prevent backflow as it is after filling the air filling device with air.

  Furthermore, since exhaust can be bypassed at startup, there are three valves, an intake valve, an exhaust valve, and a backflow prevention valve, which can improve the problems existing in conventional intake and exhaust systems that must be controlled separately. it can.

  However, the above-described device has drawbacks in use and needs to be improved. The cause is as follows.

  The present invention has been made in view of the above-mentioned problems. The purpose of the electromagnetic air valve is to integrate three functions of intake, backflow prevention, and exhaust, and after filling the air filling device with air. Since it is possible to prevent backflow as it is, and since exhaust can be bypassed at the time of startup, it exists in a conventional intake and exhaust system that has three valves, an intake valve, an exhaust valve, and a backflow prevention valve, that must be controlled separately An object of the present invention is to provide an electromagnetic air valve capable of improving the problems.

An electromagnetic air valve according to the present invention is an electromagnetic air valve that is installed in an intake / exhaust system including an air pump and performs air filling with respect to an air filling device, and the electromagnetic air valve includes a shell.
Inside the shell, an intake passage that communicates with the exhaust port of the air pump, a backflow prevention valve located on the intake passage, a storage installation chamber located downstream of the intake flow passage, and installed in the storage installation chamber under the excitation action of the coil. A set of self-holding solenoid valve rods and an air chamber communicating downstream of the housing installation chamber.
The air chamber includes an air-filled tube connected to the air-filling device, and a leak hole that leads to the outside atmosphere.

One end of the self-holding solenoid valve rod comes into contact with the leak port, and thereby the leak port is kept closed.
The opposite end of the self-holding solenoid valve rod holds a distance from the intake flow path.
When the air pump starts to operate and is sucked into the intake air flow path, the air passes directly through the backflow prevention valve, the accommodation installation chamber, the air chamber, and the air filling tube to fill the air filling device with air. .
In addition, when the intake is stopped, the air pressure in the air filling device can be maintained through the backflow prevention valve.
When the self-holding solenoid valve rod moves under the excitation action of the coil and closes the intake flow path, the air outlet is opened at the same time, so that the air in the air filling device is in the opposite direction, the air filling tube, After passing through the air chamber, it is discharged from the leak port.

Due to the structure described above, the air-filled tube is kept open, so that when the air pump is in operation, air passes directly through the backflow prevention valve, the storage chamber, the air chamber, and the air-filled tube to the air-filled device. Fill with air.
In addition, when the intake is stopped, the air pressure in the air filling device can be maintained through the backflow prevention valve.
At this time, the electromagnetic air valve can achieve the purpose of sealing after air filling and air filling without consuming electric power.

When it is necessary to exhaust the air from the air filling device, the self-holding solenoid valve rod moves under the excitation action of the coil and closes the intake flow path. In the opposite direction, the air passes through the air filling tube and the air chamber, and is then discharged from the leak port.
At this time, the electromagnetic air valve can achieve the purpose of stopping air filling and exhausting at the same time by consuming only one excitation power.
In this way, three types of valves, intake valve, backflow prevention valve, and exhaust valve, are installed to improve the problems existing in conventional intake and exhaust systems that must be controlled separately, reducing power consumption and parts manufacturing costs. be able to.

  In the present invention, at the time of air filling, the air passes directly through the intake air flow path, the backflow prevention valve, the accommodation installation room, the air chamber, and the air filling tube, fills the air filling device, and stops the intake air. Then, the air pressure in the air filling device can be maintained through the backflow prevention valve. At this time, the electromagnetic air valve can achieve the purpose of sealing after air filling and air filling without consuming electric power.

  When exhausting air, the electromagnetic air valve consumes a single excitation power, the self-holding solenoid valve rod moves, blocks the intake flow path, and simultaneously opens the air leak port, thus the inside of the air filling device. In the opposite direction, air is discharged from the air outlet through the air filling tube, and it is necessary to install a backflow prevention valve, and the two valves, the intake valve and the exhaust valve, must be controlled separately. It can improve the shortcomings in the intake / exhaust system, reduce the power consumption and parts manufacturing cost, and simplify the part placement space.

  Further, in the conventional airbag assembly, the operation of the intake valve and the exhaust valve is controlled separately, so that the power consumption is not small. If the intake / exhaust system is in an environment where energy is limited, such as in an automobile If it is installed in, the burden is not small.

It is a three-dimensional external view of the present invention. It is a three-dimensional exploded view of the present invention. It is a schematic diagram of the air pressure in the backflow prevention valve holding | maintenance air filling device of this invention. It is a schematic diagram of the air filling state of this invention. It is a schematic diagram of the air discharge | emission state of this invention.

  An electromagnetic air valve according to an embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 3, the electromagnetic air valve 1 of the present invention is installed in an intake / exhaust system including an air pump 2 and performs air filling with respect to the air filling device 3.
As shown, the air filling device 3 is an airbag assembly.

The electromagnetic air valve 1 includes a shell body 10.
In the shell 10, there are an intake passage 20 communicating with the exhaust port of the air pump 2, a backflow prevention valve 30 located on the intake passage 20, an accommodation installation chamber 21 located downstream of the intake passage 20, and an accommodation installation chamber 21. A set of self-holding electromagnetic valve rods 40 that are installed inside and move under the excitation action of the coil 41, and an air chamber 22 that communicates downstream of the accommodation installation chamber 21.
The air chamber 22 includes an air-filling tube 23 connected to the air-filling device 3 and a leak port 24 leading to the external atmosphere.
One end of the self-holding solenoid valve rod 40 contacts the leak port 24, thereby holding the leak port 24 closed.
The opposite end of the self-holding solenoid valve rod 40 holds a distance from the intake passage 20.
At the time of implementation, the air pump 2 and the coil 41 are controlled by the control module 4.

The coil 41 is installed on the outer periphery of the accommodation installation chamber 21.
Leak-proof valve plugs 42 are installed at both ends of the self-holding solenoid valve rod 40, respectively.
A gap 43 through which air flows is provided between the inner periphery of the accommodation installation chamber 21 and the outer periphery of the self-holding electromagnetic valve rod 40.
In addition, a spring 44 is installed at the bottom of the accommodation installation chamber 21 to contact the self-holding electromagnetic valve rod 40.
As a result, the leak-proof valve plug 42 at the apex of the self-holding solenoid valve rod 40 can hold the seal of the air outlet 24.

Further, a valve base 45 for installing the coil 41 is installed between the intake passage 20 and the accommodation installation chamber 21.
An inlet 451 is installed at the bottom of the valve stem 45, communicates with the intake flow path 20, and an outlet 452 protruding from the bottom of the accommodation installation chamber 21 is installed at the apex.
The self-holding solenoid valve rod 40 and the outlet 452 maintain a distance.

In addition, a leakage prevention part is preferably installed at an appropriate position between the inside of the shell 10 and other parts so that the airflow flows reliably in accordance with the direction of setting control. To prevent.
For example, as shown in the figure, a slight leak-proof rubber ring 453 is installed between the bottom and peripheral edge of the valve stem 45 and the shell body 10.
By the leak-proof rubber ring 453, the inner space of the shell 10 can be formed in a sealed state, and thus leakage of airflow entering the shell 10 can be prevented.

As shown in FIG. 4, when the control module 4 starts the operation of the air pump 2 and is sucked into the intake passage 20, the air filling tube 23 always keeps an open state.
Thus, the air directly passes through the backflow prevention valve 30, the inlet 451 and the outlet 452 of the valve base 45, the accommodation installation chamber 21, the air chamber 22, and the air filling tube 23 to fill the air filling device 3 with air. .

As shown in FIG. 3, when the air pressure in the air filling device 3 reaches the required saturation, the air filling operation of the air pump 2 is stopped.
Thereby, the air pressure in the opposite direction in the air filling device 3 can pass through the check valve 30 and the air pressure in the air filling device 3 can be maintained.
At this time, the electromagnetic air valve 1 can achieve the purpose of air filling and sealing after air filling without consuming any power.

As shown in FIG. 5, when the air filling device 3 becomes excessively saturated and exhaust is required, the control module 4 moves the self-holding solenoid valve rod 40 downward through the excitation action of the coil 41. And the spring 44 is compressed.
As a result, the leak-proof valve plug 42 at the bottom of the self-holding solenoid valve rod 40 can come into contact with the outlet 452 of the valve base 45, and simultaneously closes the intake passage 20 and opens the leak port 24.
Thus, the air in the air filling device 3 is exhausted from the air outlet 24 after passing through the air filling tube 23 and the air chamber 22 in the opposite direction.
At this time, the electromagnetic air valve 1 can achieve the purpose of stopping air filling and exhausting at the same time by consuming only one excitation power.

  Furthermore, a noise-reducing sheet 50 (sponge or PE sintered block) is installed outside the air outlet 24, thereby avoiding noise generated by airflow when the electromagnetic air valve 1 is exhausted.

  By summing up the descriptions of the above embodiments, the operation, use, and effects of the present invention can be fully understood. However, the embodiment described above is merely a preferred embodiment of the present invention, and is not intended to limit the scope of the utility model registration claim of the present invention. That is, all simple changes and modifications having the same effect based on the scope of the claims of the utility model registration of the present invention and the contents of the description shall fall within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Electromagnetic air valve 2 Air pump 3 Air filling device 4 Control module 10 Shell 20 Intake flow path 21 Accommodating installation room 22 Air chamber 23 Air filling tube 24 Leakage port 30 Backflow prevention valve 40 Self-holding solenoid valve rod 41 Coil 42 Leakage Stop valve plug 43 Gap 44 Spring 45 Valve base 451 Inlet 452 Outlet 453 Leak-proof rubber ring 50 Silence sheet

Claims (6)

An electromagnetic air valve, which is installed in an intake / exhaust system including an air pump, performs air filling with respect to an air filling device, and the electromagnetic air valve includes a shell,
In the shell, an intake passage communicating with the exhaust port of the air pump, a backflow prevention valve located on the intake passage, a storage installation chamber located downstream of the intake flow path, a coil installed in the storage installation chamber A set of self-holding solenoid valve rods that move by receiving an excitation action, an air chamber that communicates downstream of the accommodation installation chamber;
The air chamber includes an air-filled tube connected to the air-filling device, and a leak hole that communicates with the outside atmosphere, and one end of the self-holding solenoid valve rod contacts the leak hole, whereby the leak gas The mouth is kept closed, the opposite end of the self-holding solenoid valve rod is kept at a distance from the intake flow path, and when the air pump is activated and air enters the intake flow path, the air is , Directly passing through the backflow prevention valve, the storage chamber, the air chamber, the air filling tube, filling the air filling device with air, and stopping the intake, through the backflow prevention valve, The air pressure in the air filling device can be maintained, and when the self-holding solenoid valve rod moves downward under the excitation action of the coil, the air intake passage is blocked, and at the same time, the leakage air Opening the, thus air in the air filling device, in the opposite direction, the air-filled tube, after passing through the air chamber, the electromagnetic air valve, characterized in that it is discharged from the Moki port. At both ends of the self-holding solenoid valve rod, a leakage valve plug is installed,
Between the inner circumference of the accommodation installation chamber and the outer circumference of the self-holding electromagnetic valve rod, there is a gap through which air flows, and a spring is installed at the bottom of the accommodation installation chamber, Touch,
Thereby, the leak-proof valve plug at the apex of the self-holding electromagnetic valve rod can hold the seal of the leak port,
The coil is installed on the outer periphery of the housing installation chamber, and through the excitation action of the coil, the self-holding solenoid valve rod is moved downward to compress the spring, whereby the self-holding solenoid valve rod The electromagnetic air valve according to claim 1, wherein a leak-proof valve plug at the bottom can block the intake flow path and simultaneously opens a leak port.   A valve seat for installing the coil is installed between the intake channel and the accommodation installation chamber, an inlet is installed at the bottom of the valve platform, communicates with the intake channel, and at the apex portion. 3. An outlet projecting at the bottom of the accommodation installation chamber is installed, and when the self-holding solenoid valve rod moves downward, it contacts the outlet and seals the intake passage. The described electromagnetic air valve.   The electromagnetic air valve according to claim 1, wherein a sound deadening sheet is installed outside the leak port.   The electromagnetic air valve according to claim 1, wherein the coil is controlled by a control module.   The electromagnetic air valve according to claim 1, wherein the air filling device is an airbag assembly.

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