JPS58217878A - Integrated three-port solenoid valve of self-sustaining type - Google Patents

Abstract

PURPOSE:To economize energy for an integrated three-port solenoid valve of self-sustaining type which includes two solenoids, by engaging one solenoid with a turning lever and using the solenoid to keep the valve in operation. CONSTITUTION:In addition to a first solenoid 70 for driving a plunger 50 engaged with a turning lever 30, a second solenoid 200 fitted with a plunger 201 capable of being engaged with the lever is provided. After the first solenoid 70 is energized to move the plunger 50 and the turning lever 30 in the direction of an arrow A to place them in an operating position, the second solenoid 200 is deenergized to return the plunger 201 to a position as shown in the drawing, by a compressed spring 202, to keep the turning lever in the operating position. For that reason, the first solenoid 70 can be deenergized to economize energy.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention constitutes a self-holding type 3-port integrated 1-fHa valve suitable for use in charging, control I11 type inkjet printing devices, etc. With that,
The purpose is to provide an energy-saving three-boat integrated solenoid valve.

FIG. 1 is a side sectional view showing an example of a valve drive device for an inkjet printing device previously proposed by the applicant, and FIG. 2 is an enlarged view of the valve portion (A section) in FIG. , 10 is a valve body, and the valve body 10 is provided with a liquid chamber 11. One side of the liquid chamber 11 has an inlet 12, and the other side has an outlet 13. An outlet 14 is provided in the middle. Inside the liquid chamber 11, there is a valve body storage 7 that is long in the horizontal direction.
A cylinder 20 is provided, the cylinder head of which is reciprocated by a pivot lever 30.

Note that the rotating lever 30 swings with the O-ring 40 as a fulcrum, and when the solenoid coil 70 is energized, the plunger 50 moves in the direction of arrow A and the valve body storage cylinder 20
is moved in the direction of arrow A', and the solenoid coil 70 is deenergized -j1. At this time, the return spring 60 moves the plunger 50 in the direction of arrow B, moves the valve body housing cylinder 20 in the direction of arrow B', and causes the cylinder 20 to reciprocate within the liquid chamber 11. A valve body 21 for an inlet, a valve body 22 for an outlet, and a valve spring 2; 1 for compressing these valve bodies 21 and 22 in mutually opposite directions are provided in the valve body housing cylinder. The inlet 12 is connected to the valve body 2.
1, and by the valve seat 24,
Discharge 11131, valve rubber sheet 5 provided on valve body 22
They are designed to open and close 11 times, respectively.

Note that washer rings 2fi and 27 are provided at both ends of the valve body housing/cylinder 20, and these washers prevent the valve bodies 21 and 22 from popping out from the cylinder. , the end of the cylinder 20 fSIS t' is a thin-walled protrusion passageway with an enlarged inner diameter; The washer 2 (i, 27) is inserted into the cylinder body, and then the cylinder body is rotated, applying force from the circumference to the thin protrusion and bending the edge, as shown in Fig. 2. It is fixed at both ends.

FIG. 3 is a schematic view of the main parts for explaining the operation of the integrated valve described in 1. FIG. communicates with the inkjet head, the discharge port 13 is open, and the ink discharged from the discharge port 13 is collected in the ink tank. FIG. 3(b) shows a transient state when the valve changes from an off state to an on state, and at this time, both the inlet and the outlet are temporarily closed and fully open. FIG. 3(c) shows the valve on state, in which the inlet is open and the discharge port is closed, and the ink supplied from the inlet is supplied to the inkjet head through the outlet. As a matter of course, when the valve is turned from the on state to the off state, the state shown in FIG. 3(e) passes through the state shown in FIG. 3(b) to the state shown in FIG. 3(a).

Therefore, the above-mentioned integrated valve uses a member that satisfies the ink wettability as the ink liquid chamber member, and completely separates the unsatisfied member from the ink using a sealing member such as an O-ring so that it does not come into contact with the ink. It is possible to temporarily block the inlet and outlet simultaneously during the on/off operation of the valve, preventing ink leakage, pressure drop, etc. However, in order to turn the valve on/off, a solenoid is used. It uses the attraction force of the coil, the repulsion force of the return spring, etc.

In addition, the present applicant has improved the driving device for three-way electromagnetic pulp as described in I to 1. Use it to turn the valve on and off, and even
We proposed a three-boat valve that saves energy by using the holding power of a permanent magnet instead of using all electric power to hold the valve in the on state.

FIG. 4 is a side sectional view of main parts showing an example of the energy-saving three-boat valve previously proposed by the applicant, No. 51y.
1 is an overhead R view of the carriage part, in the figure, 100 is a gear ridge, 1 old is a guide rail for reciprocating the carriage 100 in the directions of arrows A and B, 102 is a wire for driving the carriage, 103.104.105 is a permanent magnet,
106 is a rotation pin, 107 is a lever operating pin, 108 is a buffer spring, 109 is a No. 1 fixing ring, 110
1 is an auxiliary rail, 111 is a groove provided in the carriage 100, 112 is an open groove provided in the carriage 100, 1
Numeral 13 is a screw hole for fixing the permanent magnets 103 and 105. The groove 111 allows the lever 30 to rotate freely, and the long groove 112 allows the carriage 100 to pass through the lever operating pin 107 in the directions of arrows A and B. It is now possible to do so. The pulp body is the same as in FIGS. 1 and 2, and the valve body is fixed to the carriage 100 by screws 114, and one end of the lever 30 that protrudes is attached to the center of the carriage 100. The lever 30 is housed in a groove 111 provided therein, and is able to swing around an O-ring 40 in the center as a fulcrum, and the lever 30 is able to swing at its tip in the same manner as described in connection with FIGS. 1 and 2. 1. Reciprocating the engaged cylinder 20 to turn on/off the inlet 12 and outlet 13; A permanent magnet 104 is held at the lower end of the lever 30 as a fulcrum by a rotating pin 106, and can slide back and forth on the carriage 100. In the sliding direction, there are two permanent magnets, namely A permanent magnet 103 for maintaining the state and a permanent magnet 105 for maintaining the OFF state are fixed on the carriage 100, but the contact surfaces of these permanent magnets 103 to 105 are of different polarity, so that they are not close to each other or come into contact with each other. On the other hand, a lever operating pin 107 is located near the carriage home body 17 of the guide rail 101.
is provided, and when the carriage 100 moves, this lever operating pin 107 comes into contact with the lower end of the lever to turn the pulp on and off.
1. Lever: 1/bar-operation This shows the pulp-off state before contact with the operating bin 107, that is, before the start of printing or the end of printing, but below, with reference to FIG. To explain the operation timing of the 30 Trevor operation bin 107, in FIG.
This is a diagram showing the position of the printer. In the diagram, A is the home position (before printing starts or when printing ends), B is the lever operating pin position, and C is the character height search gutter position. (The carriage returns to this position at appropriate intervals, for example, 1σ per minute, at the start of printing and during printing.), D-G is the width of the printing paper, f, and E-1i' are the markings. Indicates the printing area, printing,
Inside, there is a Kittredge between E and F, and from time to time I return to position C to search for the deflection height of the character.

Therefore, during printing, the lever is attracted by the permanent magnet 103 and turned on, but during this time, the lever 30 does not come into contact with the lever operating pin 107, and the pulp is turned on (see Fig. 6). (b) (see (b3)) is guaranteed. FIG. 6(b) shows the relative positions of the lever and the lever operating pin when the pulp changes from the off state (state bl) to the on state (state b3), and (bl) shows the relative position of the lever ( (B2) is a diagram showing the valve off state in which the lower end of the lever (G) is not yet in contact with the lever operating pin 107, and (b2) is a diagram showing the valve off state where the lower end of the lever (G) and the lever operating pin 107 have moved in the inward direction in FIG. A diagram showing the cylinder 20 moving with the rotation of the lever after contact, and (b3) is a diagram showing the case where the pulp is completely turned on. The on state is maintained.

Therefore, the above-mentioned applicant first proposed proposal 1. The self-retaining 3-port integrated valve carries pulp and
The reciprocating motion of the carriage is used to turn the pulp on and off, and the pulp is self-retained by a permanent magnet. The present invention relates to an energy-saving three-port integrated electromagnetic pulp suitable for use in equipment.

Fig. 7 is a side sectional view for explaining one embodiment of the self-holding type 3-port integrated electromagnetic valve according to the present invention. 200 is added according to the present invention! Also, the second solenoid coil (however, solenoid coil 70 is the first solenoid coil), 2 old is the solenoid plunger, 202 is the compression spring,
Reference numeral 203 designates a spring retaining ring, and the first solenoid coil 70 turns on and off the pulp as described in connection with FIG. In the embodiment of the present invention shown in FIG. 7, a second solenoid coil 200 is provided at right angles to the first solenoid coil 70, and this coil 200 is used when the pulp is turned on → off and when the pulp is turned off. →It is temporarily energized in the transient state when it is on. In other words, when the valve is turned on, first, the second solenoid coil 200 is energized and the plunger 201 of the second solenoid coil is turned on.
is pushed down against the compression spring 202, and then the first solenoid coil 70 is energized, the plunger of the first solenoid coil moves in the direction of arrow A, and the lower end of the rotating lever 30 also moves in the direction of A. It moves to the ON position.

In this state, when the second solenoid coil 200i is turned off, the plunger of the second solenoid coil returns to the state shown in the figure by the compression spring 202, so even if the first solenoid coil 70 is turned off afterwards. The rotary lever is held in the ON position. Next, in order to turn off the valve that is in the on state, the second solenoid coil 200 is temporarily energized, and the plunger 201 of the second solenoid coil is pressed against the compression spring 20.
During this time, the plunger of the first solenoid coil is moved in the direction of arrow B by the return spring 60, resulting in the state shown in the figure.

FIG. 8 is a time chart showing the above operation.
(a) shows the on/off state of the first solenoid:
(b) shows the on/off state of the second solenoid coil (
c) shows the on/off state of the valve function. In order to ensure the operation of the plunger of the first solenoid coil, delay times t1 and t2 are provided when the plunger of the second solenoid coil is turned on, and the plunger of the second solenoid coil is completely turned off. After pulling it, energize the first solenoid coil, and after the plunger of the second solenoid coil has completely returned to its original position,
J: Turns off the power to the J1 solenoid coil. However, it should be selected appropriately depending on the energization time CJ during OFF and the return speed of the return spring.

FIG. 9 is a main part configuration diagram for explaining another embodiment of the present invention. A relay pin 304 passes through the moving i-th IL, and the relay pin 104 is connected to the plunger 3 of the second solenoid coil 300, which is connected in series with the first solenoid coil 70, and is connected to the plunger 3). A notch 307 is provided near the tip on the opposite side of the solenoid coil, and when the valve is on (in the illustrated state), the notch 307
07 is engaged with a lever pawl 305 for maintaining the on state. This lever pawl 305 is rotatable around a fulcrum P', and a tension spring 307 is provided on the opposite side of the fulcrum from the pawl to keep the pawl engaged with the notch. Combined. Note that 306 is a claw support arm that is integrated with the valve body. Also,
Figure 10 is a view seen from the X-X line direction in Figure 9, and Figure 11.
The figure is a perspective view of the lower end of the lever 30, and FIG. 12 is a sectional view taken from the Y-Y line direction of FIG. 9. As shown in FIG. The tip of the lever 30 is coupled only to the plunger 50, as shown in FIG. 12. Therefore, in this embodiment, when the first solenoid coil is temporarily energized from off to on, the plunger is pulled in the direction of arrow A regardless of the claw 305, the valve is turned on, and at that time, the claw 305 is Notsuchi 307
The plunger is engaged (~ to the state shown in the figure, and thereafter, even if the first renoid coil is de-energized, the plunger remains in the state shown.3, that is, when the pulp is off → on,
Even if the second solenoid coil 300 is not energized to operate the lever pawl, the lever pawl is always pressed against the V-plunger 50 by the tension spring, so when the plunger V-50 moves in the direction of the arrow, Claw 305
is naturally caught in the notch 307, and thereafter maintains its on state. On the other hand, when turning on to off, when the second solenoid coil 300 is energized, the relay pin moves in the direction of arrow A, and the actuating member 308 is a lever claw yoke. 305 rotates in the direction of arrow C around the fulcrum P]-1 The lever claws 305 and 307
The plunger 50 is returned to the direction of arrow I by the return spring, and the valve is turned off. Figures 1 and 3 are for explaining the operation of the second embodiment. In the tights chart, (a) is the first
(+) indicates the on/off state of the second solenoid coil; (c) indicates the on/off state of the valve function; as mentioned above, when on If only the first solenoid coil is energized temporarily, the lever pawl for maintaining the on state will be caught in the notch by the force of the spring, maintaining the valve on state, and when the valve is off, only the second solenoid coil will be temporarily energized. When energized, the lever pawl moves out of the notch and is turned off by the return spring. .

As is clear from the above description, according to the present invention, it is possible to provide an energy-saving self-holding three-port integrated electromagnetic valve that does not require holding power when the valve is turned on.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing an example of a 3-port integrated electromagnetic valve for an inkjet printing device previously proposed by the applicant, FIG. 2 is an enlarged view of FIG. 1, and FIG. Figures 1 and 2 are schematic views of the main parts for explaining the operation of the integrated valve, and Figure 4 is a side cross-sectional view of the main parts showing an example of the 3-port integrated valve previously proposed by the applicant. Figure 5 shows Kya I
J An overhead view of the nozzle part, FIG. 6 is a timing diagram for explaining the operation, FIG. 7 is a side sectional view of the main part for explaining one embodiment of the 3-port integrated solenoid valve according to the present invention, FIG. 8 is a time chart for explaining its operation, FIG. 9 is a side sectional view of a main part for explaining another embodiment of the present invention, and FIG. -A view from the X direction,
11 is a perspective view of the lower end of the lever lever, FIG. 12 is a sectional view taken along the line Y-Y in FIG. 9, and FIG. This is Imchaiya 1. 10...3-port integrated valve, addition...valve body, rhyme/
...Rotating lever, 40...0 ring, closing...plunger, 60...return spring, 70...1st
Solenoid coil, 200.300...Second solenoid coil, 201.301...Plunger, 1 (15) Figure 1 Figure 2 410 (I[i) Foil 3 Figure 4 Figure OUT, 4 C:〉A 12 Bgu: IN”
EXH3 030 δ 1 φ Fig. 7 Fig. 8

Claims (4)

[Claims] (1) An inlet boat and a discharge port 1] A valve body having a cylinder chamber having a coaxial port and an outlet port located between the artificial boat and the discharge port; and a valve body for opening and closing the discharge port, and a solenoid coil for reciprocating the valve body (hereinafter referred to as the first solenoid coil).
In the three-boat integrated solenoid valve having the first
1. A self-holding three-port integrated electromagnetic pulp having a second solenoid coil separate from the solenoid coil, the second solenoid coil maintaining the valve on state. (2) The second solenoid coil momentarily operates a solenoid plunger for maintaining the on state or a lever pawl for maintaining the on state when the valve transitions from on to off or from off to on. A self-retaining three-port integrated electromagnetic pulp according to claim (1). (3), Claim fP'(1) 11'j characterized in that the second solenoid coil and plunger are disposed separately from the tenth solenoid coil and plunger, and are +1. Or the self-retaining three-port integrated electromagnetic pulp described in item (2). (4) The second solenoid coil and plunger are the same as the first solenoid coil and plunger.
A self-retaining type 3 baud 1.--embedded electromagnetic pulp characterized by being disposed on the 111.