JPS591885A - Electromagnetic flow control valve device - Google Patents

Abstract

PURPOSE:To improve operative durability of a valve, by applying rotary torque to a permanent magnet with the parallel magnetic field generated from an electromagnetic coil and regulating a flow through rotary motion of the permanent magnet. CONSTITUTION:A permanent magnet 29 of disc shape is fixed onto a rotary shaft 22, and a pair of air-core electromagnetic coils 33, 34 are arranged to the outside of this magnet 29. If a signal current is applied to flow in the coils 33, 34, the current flow in the both coils 33, 34 in such a manner that the parallel magnetic field acts on the magnet 29 from the coil 34 through the permanent magnet 29, coil 33 and a body 15, and because the rotary shaft 22 rotates, also a rotary valve 24 is turned, then communication holes 25, 26 are controlled to be opened and closed. Inputs from input ports 11, 12 supply a negative pressure in accordance with an opening of the holes 25, 26 to an output port 13. An effective diameter of the rotary valve 24 is almost equal to a diameter of the rotary shaft 22.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electromagnetic flow control valve device, and more particularly to an electromagnetic flow control valve device having a valve structure that rotates in response to an input electrical signal.

In conventionally well-known 8-boat type solenoid valves, such as vacuum switching valves, by changing the ON-OFF ratio, that is, the duty ratio, of the voltage applied to the slope of the electromagnetic coil, the atmosphere boat and negative pressure boat can be changed. The structure is such that the negative pressure supplied to the output boats is controlled by controlling the communication opening time with each output boat. At this time, the valve repeatedly collides with the valve seat to open and close according to the control frequency. For this reason, there is a problem that the durability of the valve is disadvantageous in terms of operation, and it is not suitable for precise fluid control, which is not desirable in practice.

In order to deal with the problems of the conventional solenoid valve device described above, the purpose of this invention is to improve the operating durability of the valve and at the same time to control the fluid with high precision and responsiveness. It is something that can be done.

In order to achieve the above object, the present invention has a pulp structure that controls the flow rate of fluid through rotational motion by utilizing the rotational torque received by the permanent magnet.

That is, a first-person boat, a second-person boat, and an output boat are formed in the body of the valve device, and a rotating shaft is disposed within the body.
A disk-shaped permanent magnet is fixed to the rotating shaft, and an electromagnetic coil is arranged around the permanent magnet so that the magnetic field generated by the coil acts in a direction parallel to the permanent magnet, thereby imparting rotational torque to the rotating shaft. is generated, a rotary pulp is integrally formed on the rotary shaft, and the pulp is connected to the first man-powered boat and the first output port.
The communication opening degree and the second communication opening degree between the second human-powered boat and the output port are controlled, and the effective diameter of the valve is made substantially the same as the rotation shaft diameter. For example, the first human-powered boat is an atmospheric boat that communicates with the atmosphere, the second human-powered boat is a negative pressure boat that communicates with a negative pressure source, and the rotary pulp integrally formed on the rotating shaft connects the atmospheric boat and the output port. It is possible to control communication between the negative pressure boat and the output port, and supply negative pressure proportional to the applied current to the output port.

In this way, the present invention has a valve structure that uses rotational motion, so it is possible to control a relatively large volume of fluid with a small device, and it is suitable for controlling large volumes of fluid in various exhaust gas control systems for automobile engines. It is also less susceptible to vibrations and improves operational reliability. Furthermore, in the present invention, since the pulp is integrally formed on the rotary shaft, that is, the valve and the rotary shaft are made into the same part, it is possible to reduce costs by reducing the number of parts and improve ease of assembly. At the same time, it has the advantage of being able to reduce the size in the axial direction, which is an excellent practical effect.

Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings.

FIG. 1 shows an electromagnetic flow control valve device 10 according to the present invention, which includes a first body 14 having a first human-powered boat 11, a second human-powered boat 12, an output port 18, and a second body made of a magnetic material. The body 15 is integrally connected to the body 15 by a connecting member 16. Inside both bodies 14 and 15, a rotating shaft 22 that rotates according to the applied current value, which will be described later, is arranged.
The left portion of No. 2 in the figure is rotatably housed in a bearing member 23. Pulp means, that is, a rotary knob 24 that rotates together with the rotary shaft 22 is integrally formed at the left end of the rotary shaft 22. That is, the space 24a formed inside the rotary hull 724 is always in communication with the output port 13, and the opening and closing of the first communication hole 25 and the second communication hole 26 formed in the bearing member 28 is controlled by the rotary pulp 24. The control section is disconnected.

When the first communication hole 25 is open, the first capo 11 is
Passage 27° first communication hole 25. The second human-powered boat 12 communicates with the output port 18 through the space 24IIL, and when the second communication hole 26 is open, the second human-powered boat 12 communicates with the output port 18 through the space 24IIL. Second communication hole 26. It communicates with the output port 18 via the space 24a. The rotary pulp 24 moves clockwise as the rotary shaft 22 rotates in FIG. 2, and the effective diameter of the rotary pulp 24 is approximately the same as the diameter of the rotary shaft 22. .

A radially magnetized disk permanent magnet 29 is fixed on the rotating shaft 22 via a fixing member 30 .

Casing members 31 and 32 are arranged outside the magnet 29, and a pair of bobbinless air-core electromagnetic coils 88 and 84 are arranged between the members 81 and 32 and the magnetic body 15. Further, the magnetic yoke member 85 interposed between the magnet 29 and the body 15 is for increasing the rotation torque force received by the rotation shaft 22. Electromagnetic coil 83.
When a signal current is applied to the coil 84 and the magnet 29. Coil 38. The direction of current flowing in both coils 33, 84 and 1 is determined so that a parallel magnetic field via the second body 15 acts on the magnet 29. When the coil is energized, the rotating shaft 22, that is, the rotating valve 24 rotates clockwise G. E11. The communication hole 2 is opened in proportion to the applied current value.
5.26 is controlled to open and close. In addition, n36 shown in FIG.
is a fixing member made of resin.

The casing 32 is fitted into a resin terminal holder 37 fixed to one end of the second body 15, and one end of the rotating shaft 22 protrudes inside the casing 32. At the right end of the rotating shaft 22,
A spiral spring 38 is attached to urge the rotary pulp 24 to a predetermined position, and the inner end of the spring 88 is fixed to the rotary shaft 22 at a fixing point Fn. The cover member 39 is inserted and fixed into the casing 82 via an O-ring 40, and an epoxy resin material 41 is attached as a fixing and sealing member. A pair of terminals 42 (only one shown) held by the aforementioned terminal holder 87 are connected to electromagnetic coils 88.34 as appropriate. Note that 48.44 indicates a rubber member for sealing.

In this embodiment, the first human-powered boat 11G- is an atmospheric boat that constantly communicates with an atmospheric source, and the second human-powered boat 12
constitutes a negative pressure boat that is always in communication with a negative pressure source, and the output port is connected to a servo motor as appropriate at 2'1. ? JI,m
When the coils 38, 34 are not energized, the rotary pulp 24 is held at its initial position by the biasing force of the spring 38, and the pulp 24 opens the first communication hole 25 and closes the second communication hole 2G at T1. Therefore, only the atmosphere is supplied to the output port 13. Next, when a signal current η is applied to the coils 33 and 34, the rotary pulp 24 receives rotational torque from the rotary IQti 221, and the rotary pulp 24 rotates clockwise in FIG. As a result, the opening degree of the first communication hole 25 decreases, and the opening degree of the first communication hole 25 decreases.
Since the degree of opening of the communication hole 26 increases, negative pressure is supplied to the output port 18 in accordance with the degree of opening of the two-speed communication hole 25,26.

At the same time, the opening degrees of the first communication hole 25 and the twenty-first communication hole 26 are in a relationship that is opposite to each other with respect to the rotation of the pulp 24. When the rotary pulp 24 further rotates clockwise in FIG. 2, the first communication hole 25 closes and the second communication hole 26 opens to its maximum degree. In this way, a negative pressure proportional to the input current can be taken from the output port 13.

The current applied to the electromagnetic coils 88 and 84 described above is controlled by, for example, a computer that detects the operating state of the automobile engine.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing one embodiment of the electromagnetic flow control valve device of the present invention, FIG. 2 is a cross-sectional view of It-1 in FIG. 1, and FIG. 8 is a cross-sectional view of Tol in FIG. . 10... Solenoid flow control valve device, 11.12... Human powered boat, 18... Output port, 14.15...,
f T' (, 22... Rotating shaft, 24... Rotating pulp, 25.26... Communication hole, 29-... Permanent magnet,
38.34...Electromagnetic coil patent applicant Reio Nakai, representative of Aisin Seiso Co., Ltd. Figure 1 28 Figure 2 Figure 3

Claims (1)

[Claims] A body having a first human-powered boat, a second human-powered boat, and an output boat truck, a rotating shaft disposed within the body, a permanent magnet fixed to the rotating shaft, and generating a parallel magnetic field acting on the permanent magnet. An electromagnetic coil rotates integrally with the rotating shaft I
i. A rotary pulp that controls opening and closing of a first communication between the first man-powered boat and the output boat and a second communication between the second man-powered boat and the output boat, and the rotary valve is integrally attached to the rotating shaft. An electromagnetic flow control valve device characterized in that the effective diameter of the valve is substantially the same as the diameter of the rotating shaft.