JPH0239095Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] The present invention relates to a solenoid valve, and more specifically, by controlling the switching valve part by controlling the electric power supplied to the solenoid coil of the solenoid part, the pressure of the fluid can be adjusted according to the flow rate. This invention relates to a solenoid valve whose operation is controlled so that it can change periodically.

[Background technology]

2. Description of the Related Art Solenoid valves have conventionally been used to drive and control actuators and the like for operating various machines using fluid pressure and the like. This solenoid valve turns on and off the supply of current to the solenoid, controls the flow direction of the fluid passing through the valve body and the opening and closing of the flow path, and operates so that the above-mentioned actuator etc. performs work according to the fluid. .

On the other hand, there are cases where it is necessary to periodically drive the actuator using such a solenoid valve, and in such cases, conventionally, a timer device connected in series with a solenoid to the solenoid valve is connected via a connector or the like. Furthermore, this connector etc. was connected to the driving power source of the solenoid valve.

However, in order to operate such a conventional solenoid valve periodically, that is, at regular intervals, a timer device is separately prepared as described above.
It must be connected to a solenoid, and sufficient installation space must be provided for externally attaching this timer device. Further, the timer device to be externally attached inevitably has a larger and more complicated shape, which causes problems such as the above-mentioned connection work becoming troublesome and inconvenient to handle.

[Purpose of invention]

This invention enables the energization cycle to be set arbitrarily to the solenoid coil using a timer switch circuit that is integrally connected to the solenoid part.
In addition to automatically controlling the energization of the solenoid coil according to the set energization cycle, the entire configuration including the solenoid coil and the timer switch circuit can be made compact, making the configuration more compact and easier to handle. The purpose is to obtain a solenoid valve.

[Summary of the idea]

In this invention, a timer switch circuit is connected in series to the solenoid part, which can arbitrarily set the energization cycle to the solenoid part.The solenoid can be energized at the set energization cycle, and the solenoid valve The operation and non-operation of the actuator are automatically repeated, thereby enabling repeated operation of the actuator.

〔Example〕

FIG. 1 shows an embodiment of a specific circuit of a solenoid valve according to the present invention. In the figure, reference numeral 1 denotes a solenoid which is a driving part of a solenoid valve, and a driving power source is connected to this solenoid 1. 2 and 3 are switching transistors connected in parallel, and these constitute a power amplifier with a large amplification rate, and one end of the solenoid 1 is connected to this power amplifier. Further, a terminal 4 for driving power input is connected to the other end of the solenoid 1. Further, a timer switch circuit 6 having an integrated circuit configuration is connected between the base of the transistor 2 and a terminal 5 for inputting a control DC power supply. This timer switch circuit 6 includes a plurality of time (cycle) setting switches 7.
a, 7b, 7c, 7d, 7e, and 7f, and by operating any one or more of these, a switch (not shown) is inserted into the circuit connecting the base of the transistor 2 and the terminal 5. not),
It can be turned on and off at any cycle. Note that an electronic switch such as a transistor is used for this switch. Note that 8 is a terminal for supplying DC voltage to each of the switches 7a to 7f.

FIG. 2 is an external view of a solenoid valve having the circuit as described above, and this solenoid valve consists of a solenoid section 10a containing the solenoid 1 described above and a switching valve section 10b. In this electromagnetic valve, the time setting switches 7a to 7f are arranged in parallel on a box 11 that is integrally provided outside the solenoid section 10a.

Next, the operation of this embodiment will be explained.

First, in order to enable the solenoid 1, a constant level of DC voltage is supplied to the terminals 5 and 8, and a voltage of a magnitude necessary and sufficient to energize the solenoid 1 is supplied to the terminal 4. Apply it. This voltage can be either alternating current or direct current.

Next, the cycle at which the solenoid 1 is energized and the solenoid valve is to be operated is set by operating any of the switches 7a to 7f. For example, if you want to activate and deactivate the solenoid valve every hour, turn on switch 7a, and if you want to activate and deactivate it every two hours, turn on switch 7b.
If you want to turn on the switch and activate and deactivate it every three hours, turn on both switches 7a and 7b. Therefore, by such a selective switch operation, the timer switch circuit 6 sets the period (time) for conducting and cutting off the circuit connecting the terminal 5 and the base of the transistor 2.

Therefore, after setting the time (cycle), when the set time is reached, the DC voltage applied to the terminal 5 is input to the base of the transistor 2, and at this time, the transistors 2 and 3 are activated one after another. It will be switched on. Therefore, the drive voltage input to terminal 4 is applied to solenoid 1,
The solenoid valve starts to operate, and after this start, the solenoid valve is operated for the above-mentioned set time. Further, when this operating state passes the set time, the timer switch circuit 6 interrupts the circuit connecting the terminal 5 and the base of the transistor 2. Then, such conduction and disconnection are repeated at a set period, and the fluid control of the solenoid valve, that is, the operation of the actuator can be periodically repeated.

In this way, by integrally connecting and incorporating the timer switch circuit 6 to the solenoid 1 of the solenoid section 10a, it is possible to operate the solenoid valve at an arbitrarily set period without increasing the size of the structure. can be controlled.

〔effect〕

According to the present invention, by integrally connecting a timer switch circuit that can arbitrarily set the energization cycle to the solenoid coil to the solenoid part, the entire structure of the solenoid valve having the timer switch circuit integrated therein can be improved. It can be made compact, the structure can be made smaller, and the handling can be made easier. In particular, when the timer switch circuit is integrated, the installation space can be significantly reduced, and the installation on the solenoid valve body is easier.

[Brief explanation of the drawing]

FIG. 1 is a block connection diagram showing an embodiment of the solenoid valve according to the present invention, and FIG. 2 is an external view thereof. 1...Solenoid, 6...Timer switch circuit, 7a to 7f...Switch.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a solenoid valve that controls a switching valve section by controlling the electric power supplied to a solenoid coil of the solenoid section, the solenoid section is provided with an arbitrary power supply cycle to the solenoid coil. A solenoid valve characterized by integrally connecting a timer switch circuit that can be set to (2) The solenoid valve according to claim 1, wherein the timer switch circuit includes a timer circuit and a cycle setting switch that can arbitrarily set the switching cycle of the timer circuit.