CN1659396A

CN1659396A - Electromagnetic valve

Info

Publication number: CN1659396A
Application number: CN 03812795
Authority: CN
Inventors: 桥本岳
Original assignee: K K KOGANEI
Current assignee: K K KOGANEI; Koganei Corp
Priority date: 2002-06-06
Filing date: 2003-05-28
Publication date: 2005-08-24
Anticipated expiration: 2023-05-28
Also published as: TW200404971A; WO2003104696A1; JP3853700B2; CN100363671C; TWI223041B; JP2004011736A

Abstract

To prevent the malfunctioning of a manual button provided on a solenoid valve. SOLUTION: In a containing hole (16) formed in a valve casing (20), a main valve shaft (17) is provided to be capable of reciprocation in an axial direction, and an output port is changeably communicated to a feed port and an exhaust port by the main valve shaft (17). Based on energization to a coil of a solenoid part (32), a movable core (36) reciprocates in an axial direction, and a pilot valve communicated with the movable core (36) changeably communicates an output passage communicated with an air pressure chamber (29) to a feed passage (39) communicated with the feed port and an exhaust passage (42). On a valve casing (20), the manual button (51) is provided for the movable core (36) to be manually actuated. A stopper (57) is provided to be movable between an engagement position and a retraction position to regulate the manual button 51 being pushed in.

Description

Solenoid valve

Technical field

The invention relates to the solenoid valve that is moved by solenoid (solenoid), especially, about making the solenoid valve that uses applicable to pilot operationp (pilot operation) mode by the straight mode of moving the pilot pressure that solenoid valve produced (pilot pressure) the operation main valve axle of shape.

Prior art

The position control valve of the flow direction of control air is used in the supply and the control, the supply of air pressure and the control of discharge that stop to supply with to the air pressure in air pressure loop, make cylinder (cylinder) come and go the control etc. of the feeding direction of the air pressure of action, have a plurality of ports (port), the switching state that valve is arranged is two kinds two point valve and three kinds three position valve.So the position control valve of planting is promptly promptly by pilot valve (pilot valve) pilot pressure to be supplied with by straight moving shape three port solenoid valves that solenoidal movable core moved or stopped to be supplied in the main valve axle by electromagnet, and pilot pressure makes the in addition solenoid valve of the indirect action shape of the pilot operationp mode of handover operation of main valve axle thus.

This indirectly solenoid valve of action shape have can be by the interchangeable advantage of cutting the big main valve axle of steering force of pilot pressure, have with the solenoid valve of single solenoid (single solenoid) type of an operation electriomagnet main valve axle and double solenoid (double solenoid) type with two operation electriomagnet main valve axles.Two point valve of single solenoid type main valve axle when the energising of untiing electromagnet returns in original position.On the one hand, though when two point valve of bipitch cast are also untied energising to the electromagnet no electric circuit of other party to a side electromagnet the main valve axle remain in original position.More and, the three position valve of bipitch cast is untied when energising main valve axle in the neutral position to two sides' electromagnet, main valve axle and two point valve are with same action when either party electromagnet energising.

On the one hand, above-mentioned pilot valve is the relation of three port valves of straight moving shape, also can be used as the solenoid valve of monomer.

Any person of single solenoid type and bipitch cast has the occasion of using with monomer, is gathered the occasion that installing is used with making a plurality of solenoid valves with accessory or pedestal, and the pattern of set is called compound (manifold) solenoid valve.The occasion of using with monomer with compound type too as the relation that solenoid valve is failure to actuate when the coil no electric circuit of solenoid part, coil not in succession the state mortor operated valve of power supply be failure to actuate.

Therefore, the state that does not have power supply in succession at coil can be forced to make for the purpose of solenoid valve moved for making, and making the plunger (plunger) of being moved by the energising of coil at pilot valve is that movable iron core can be moved forcing by manual buttons.Known, the outer set that makes manual buttons protrude in valve cylinder (valvecasing) is loaded on valve cylinder, when pushing manual buttons, though become with compulsory and driven pilot valve by movable core, under common user mode, when pushing manual buttons by fault, can be to make the solenoid valve action because of carelessness.Again, originally as monomer, the occasion in that the straight three port solenoid valves that move shape use also has same assembling manual buttons with pilot valve.

Summary of the invention

Purpose of the present invention is the fault action that prevents to be located at the manual buttons of solenoid valve.

Solenoid valve of the present invention comprises valve cylinder, main valve axle, solenoid (solenoid) portion, pilot valve (pilot valve), hand push button, reaches break (stopper) etc.Wherein, valve cylinder forms accepting hole and is communicated in air feed port (port), output port and exhaust port.The main valve axle is set as to come and go at above-mentioned accepting hole and moves freely in axle direction, makes above-mentioned output port switch ground and is communicated with above-mentioned supply port and above-mentioned exhaust port.Solenoid is installed in above-mentioned valve cylinder, is provided with the energising that utilizes coil can come and go action at axle direction movable core.Pilot valve is installed in above-mentioned valve cylinder with interlock in the mode of above-mentioned movable core, make output channel be communicated in air feed path and exhaust passageway with switching, wherein, output channel is communicated in the air pressure chamber of accommodating above-mentioned piston (piston), and air feed path and exhaust passageway are communicated in above-mentioned air feed port.Hand push button is installed in above-mentioned valve cylinder to come and go the mode move freely, by push action so that above-mentioned pilot valve moves the position that is communicated with above-mentioned air feed path in above-mentioned output channel.Break to be to be installed in above-mentioned valve cylinder with mode that above-mentioned manual buttons can engage freely, and it is mobile to be limited pushing of above-mentioned manual buttons.

Solenoid valve of the present invention is established piston at the two end part of above-mentioned main valve axle, has two pilot valves that utilize above-mentioned solenoid part to be moved corresponding to two air pressure chambers of accommodating each piston.Again, in the solenoid valve of the present invention, above-mentioned main valve axle is removable in a position or three positions.

Solenoid valve of the present invention comprises valve cylinder, solenoid, switch valve, flap valve (flapper valve), manual buttons and break etc.Wherein, valve cylinder is formed with air feed path, exhaust passageway and output channel.Exhaust passageway forms open end at first valve seat.Exhaust passageway forms open end at second valve seat, and above-mentioned first valve seat is reverse.The air guide that output channel will be flowed out from above-mentioned air feed path is in carry-out part.Solenoid is installed in above-mentioned valve cylinder, is provided with energising by coil and can comes and goes and move in axial movable core.Switch valve is located at above-mentioned movable core above-mentioned first valve seat of switch in addition.Flap valve is disposed in the above-mentioned valve cylinder in the mode with above-mentioned switch valve subtend, utilizes above-mentioned movable core being driven by interlock latch (pin), so that above-mentioned second valve seat switch in addition.Manual buttons is installed in above-mentioned valve cylinder to come and go the mode move freely, by push action so that above-mentioned pilot valve moves the position that is communicated with above-mentioned air feed path in above-mentioned output channel.Break to be to be installed in above-mentioned valve cylinder with mode that above-mentioned manual buttons can engage freely, and it is mobile to be limited pushing of above-mentioned manual buttons.

When of the present invention, in the occasion of the indirect action shape solenoid valve with the pilot valve that moves by solenoid with the monomer use, in the occasion of many valves pedestal (manifold block) with the ugly formula use of many valves of compound lift-launch, in the occasion that makes pilot valve with the solenoid valve use of straight moving shape, when also can be operated, can prevent operation by break by the malfunction of manual buttons by manual buttons.

Description of drawings

Fig. 1 represents the oblique drawing of the solenoid valve of one embodiment of the invention.

The sectional view that Fig. 2 represents to make the part of Fig. 1 to enlarge.

The sectional view that Fig. 3 represents to make the part of Fig. 2 to enlarge.

Fig. 4 A represents as shown in Figure 3 at the manual buttons of pressed state and the planimetric map of break.

The manual buttons that Fig. 4 B is reversed after being illustrated in and pushing and the planimetric map of break.Fig. 4 C represents that break is at the manual buttons of the state of engagement positio and the planimetric map of break.

Fig. 5 represents the sectional view of the solenoid valve of other embodiments of the invention.

The sign explanation of drawing reference numeral:

The pedestal of valve more than 10 (manifold block)

11 solenoid valves

12 air feed streams

13,14 exhaust passageways

15 main valve parts

16 accepting holes

17 main valve axles

18 coating members

19 guide elements

20 valve cylinders (valve casing)

21 air feed ports (port)

22,23 exhaust ports

24,25 output ports

26,27 pistons

28, air pressure chambers 29

31 air feed paths

32 solenoids (solenoid) portion

33 coils

34 bobbins (bobbin)

35 secured cores

36 movable cores

37 switch valves

38 valve seats

39 air feed paths

40 compression helical springs

41 valve seats

42 exhaust passageways

43 valve retainers

44 flap valves

45 are communicated with latch (pin)

46 through holes

47 helical springs

48 installation holes

49 filters

51 hands touch the button

52 plane of inclination

53 operation levers

54 engage latch

55 engage ditch

56 compression helical springs

57 breaks

58 sections portions

59 break faces

61 breach

62 slide members

63 otch

Mode of execution

For above-mentioned principle of the present invention and other purpose, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:

Below, with appended graphic detailed description the in detail of embodiments of the invention foundation.The sectional view that the oblique drawing of the solenoid valve of one embodiment of the invention that Fig. 1 represents to make the present invention be applicable to many valves pattern (manifold type) occasion, Fig. 2 represent to make the part of Fig. 1 to enlarge, Fig. 3 are represented the sectional view that the part with second figure enlarges.

At the solenoid valve of many valves pattern of Fig. 1 by four solenoid valves 11 being installed in many valves pedestal 10 to its width direction, represent to be installed in four solenoid valves of many valves pedestal 10 one at Fig. 2.Form the air feed stream 12 that connects the air potential source and, two exhaust flow paths 13,14 at many valves pedestal 10 to extend each length direction.Though have four solenoid valves 11 to be installed in many valves pedestal l0 at Fig. 1, can install the solenoid valve 11 of any number at many valves pedestal.

Solenoid valve 11 has as shown in Figure 2 becomes the main valve of Nogata shape parts (block) 15 generally, accommodates main valve axle 17 at these main valve parts 15 formed accepting holes 16 and can come and go and move freely in axle direction.At the fixing coating member (cover block) 18 of an end of main valve parts 15, at his end fixed guide parts (pilot block) 19, wait main valve parts 15 thus, coating member 18 and guide element 19 form valve cylinders 20.

Form air feed port 21 so that air feed stream 12 is communicated with accepting hole 16 at main valve parts 15, form two

exhaust ports

22,23 so that two exhaust flow paths 13,14 respectively are communicated with accepting hole 16.Main valve parts 15 more form output port 24 in the neutral position of an air feed port 21 and a side's exhaust port 22, form output port 25 in the neutral position of air feed port 21 and the exhaust port 23 of other party.

So, form the occasion of

output ports

24,25 at main valve parts 15, the air pressure action machine that waits for air pressure cylinder (cylinder) makes the compressed-air actuated joint of supply be installed in main valve parts 15.But,, also can establish

output port

24,25 at each solenoid valve 11 pairing many valves pedestal 10 and be communicated in accepting hole 16 in the occasion that many valves pedestal 10 carries a plurality of solenoid valves 11.

Establish a plurality of valve body 17a at main valve axle 17, when main valve axle 17 was displaced into the primary importance of a direction end, as shown in Figure 1, air feed port 21 became connected state with output port 25, and output port 24 becomes connected state with exhaust port 22.To this, when main valve axle 17 is displaced into the second place of his direction end, carries out port and switch, air feed port 21 becomes connected state with output port 24, and output port 25 becomes connected state with exhaust port 23.

In an end plunger 26 of main valve axle 17, dispose than piston 26 bigbore pistons 27 at his end.Forms by coating member 18 and main valve parts 15 and to make piston 26 be directed at axial air pressure chamber 28 freely, form by guide element 19 and main valve parts 15 and make piston 27 be directed at axial air pressure chamber 29 freely with slip to slide.

Air feed port 21 is communicated in air pressure chamber 28 by the air feed path 31 that is formed on main valve parts 15, when having pressurized air to supply with at air feed port 21, in air pressure chamber 28, applies thrust to primary importance at main valve axle 17 with frequent supply pressurized air.But, when 28 assemble compressible helical springs (coil spring) are as containing room in the air pressure chamber, also can apply the thrust of same direction by compression helical spring.

At guide element 19 installing solenoid parts 32, as shown in Figure 2, have the bobbin (bobbin) 34 of package coil 33 at this solenoid part 32, in bobbin 34 in the installing secured core 35, to move freely in axial plunger be movable iron core 36 to come and go in installing.As shown in Figure 3, at the switch valve 37 of the front end of movable core 36 installing rubber system, this switch valve 37 becomes can be contacted with first valve seat 38 that is formed on guide element 19.This valve seat 38 form be communicated in air feed port 21 by the opening portion of main valve parts 15 with guide element 19 formed air feed paths 39, this opening portion is by switch valve 37 switch in addition.Make switch valve 37 apply the compression helical spring 40 of spring force to valve seat 38 in movable core 36 installings.Thereby when coil 33 energisings, movable core 36 moves to secured core 35 with anti-spring force, to open the opening portion of air feed path 39, is closed the opening portion of air feed path 39 when untiing electricity by oily spring force.

It is reverse so that valve seat 38 is become to form second valve seat 41 at the opposition side of valve seat 38, establishes the opening portion of the exhaust passageway 42 of the outside that is communicated in guide element 19 at this valve seat 41.Install the valve retainer (holder) 43 of drums at guide element 19 in the mode that covers this valve seat 41, move with switch in this valve retainer 43 and assemble flap valve (flapper valve) 44 freely, the opening portion that this flap valve 44 makes exhaust passageway 42 is switch in addition.The a plurality of Zhi Liandong latches 45 of configuration between flap valve 44 and movable core 36, flap valve 44 by interlock latch 45 by in addition switch motion of movable core 36.

Form through holes 46 at this valve retainer 43, as shown in Figure 2, when coil 33 being untied energising, movable core 36 is pushed the relation of valve seat 38 to by spring force, becomes switch valve 37 and is contacted with valve seat 38, the state that flap valve 44 leaves from valve seat 41.By this, air pressure chamber 29 is to become and the external communications state by exhaust passageway 42, and the air in the air pressure chamber 29 are discharged in the outside, and main valve axle 17 becomes as shown in Figure 1 primary importance by being supplied in air pressure in the air pressure chamber 28.

To this, when in coil 33 energisings, apply relation at flap valve 44 by being assembled in helical spring 47 in the retainer 43 when switch valve 37 leaves from valve seat 38 to the spring force of valve seat 41, with by air feed path 39 from 21 compressed and supplied air of air feed port by flowing in the air pressure chamber 29 of carry-out part from the output channel that the gap was constituted between the hole of interlock latch 45 and its perforation.Though be supplied in two sides' air pressure chamber 28,29 pressurized air is same pressure, the compression area of piston 27 is set the relation bigger than the compression area of piston 26 for, when flap valve 44 was opened in air pressure chamber 29 air supply, the position that main valve axle 17 is urged at stroke (stroke) end in Fig. 1 left side was the second place.So, switch valve 37 constitutes with flap valve 44 and makes the output channel that is communicated in air pressure chamber 29 switch on the pilot valve that air feed path 39 is communicated with exhaust passageway 42.

Form installation hole 48 at guide element 19 from end face in succession to institute's depthkeeping degree, install filters (filter) 49 to cross exhaust passageway 42 at this installation hole 48 with main valve parts 15.Filter 49 is formed by institutes such as cloth or porous matter resins has most pores, allows from the air pressure chamber in 29 to outside exhausting air, prevents that the slag inclusion of dust etc. from entering in the exhaust passageway 42 from the outside.

As shown in Figure 3, can come and go the manual buttons 51 that moves freely in guide element 19 installings that constitute valve cylinder 20 to the round direction of action of movable core 36 direction that meets at right angles, this manual buttons 51 has the base end part 51a in big footpath and the front end 51b of path, base end part 51a protrudes in the outside of guide element 19, forms the plane of inclination 52 that is contacted with movable core 36 at front end.

Operation lever (lever) 53 in that base end part 51a installing is extended this rectangular direction can make manual buttons be reversed by operating these operation lever 53 operators.The axial round action that is guiding manual buttons 51 with reverse motion, be formed at the base end part 51a of manual buttons 51 with the joint ditch 55 that engages latch 54 joints that is fixed on guide element 19.This engage ditch 55 have be engaged in when manual buttons of making 51 is displaced into axle direction the axle direction ditch 55a that engages latch 54 with, be engaged in the circumferencial direction ditch 55b that engages latch 54 when reversing.

Make manual buttons 51 apply the compression helical spring 56 of spring force to the outstanding direction of foreign side in the assembling of the outside of the minor diameter part of manual buttons 51, engaging under latch 54 and the state that axle direction ditch 55a engages, do not apply pressing force when manual buttons 51, manual buttons 51 protrudes in outside state as shown in Figure 1.At this moment, the plane of inclination 52 of manual buttons 51 is left from movable core 36, and switch valve 47 becomes the state that leaves from valve seat 38.On the one hand, when the operator pushed manual buttons 51, as shown in Figure 3, the plane of inclination 52 of manual buttons 51 was contacted with movable core 36, and switch valve 37 leaves from valve seat 38 with the spring force of the anti-helical spring 40 of compulsory mode.

The 4A～Fig. 4 C respectively is the planimetric map of Fig. 3, and Fig. 4 A represents as Fig. 2 or the state of pushing the state of manual buttons 51 or protruding in foreign side shown in Figure 3.As shown in Figure 3, with manual buttons 51 in addition under the pressed state, operation lever 53 is operated when manual buttons 51 reversed, become and engage the circumferencial direction ditch 55b that latch 54 is engaged in joint ditch 55, though apply the spring force of projected direction in manual buttons 51 by helical spring 56, manual buttons 51 keeps pressed state.Fig. 4 B represents the state that reverses after manual buttons 51 is pushed.

Mobile in order to limit pushing of manual buttons 51, installing can come and go the break 57 that moves freely to the movement direction of manual buttons 51 direction that meets at right angles on guide element 19.Establish the break face 59 that is engaged in the section portion 58 that is located at manual buttons 51 at this break 57, shown in Fig. 4 C, when making break 57 be displaced into engagement positio, break face 59 becomes subtend with section portion 58, though push manual buttons, also can limit moving of manual buttons 51, by this, can prevent to push manual buttons 51 by faulty operation.

Make break 57 from 4A, when the retreating position shown in the 4B figure moves to engagement positio shown in Fig. 4 C,, form the breach 61 that manual buttons 51 are entered at break 57 for break 57 and manual buttons 51 do not interfere.The relation that 57 pairs of guide elements 19 of break are slided between retreating position and engagement positio, make slidably along formed not icon guide surfaces in the guide element 19 that slide member 62 is installed in break 57 as shown in Figure 3, slide member 62 breakthrough form shown in Fig. 4 C is formed in the otch (slit) 63 of guide element 19.

Fig. 5 represents the sectional view of the solenoid valve of other embodiments of the invention, is omitted many valves pedestal 10 shown in Figure 1.Again, at Fig. 5, with Fig. 2 and the common attached prosign of member of member shown in Figure 3.

Solenoid valve shown in Figure 5 11 with each installing of both sides guide element 19 of establishing dress solenoid part 32 as shown in Figure 2 of the same main valve parts 15 of that shown in Figure 2.Thereby this solenoid valve becomes two point valve of the bipitch cast of the piston 27 of installing same external diameter at the two ends of main valve axle 17, establishes two hand push buttons 51 owing to establishing two pilot valves at a solenoid valve.

Though at solenoid valve shown in Figure 5 11 is two point valve, make main valve axle 17 be set in the neutral position by spring force, can become three position valve when making main valve axle 17 be displaced into the position of stroke end by each pilot valve.

Be that movable iron core 36 makes output channel switch on the solenoid valve of the straight moving shape that air feed path 39 is communicated with exhaust passageway 42 by switch valve 37 and flap valve 44 formed pilot valves by the plunger of solenoid part 32 as shown in the figure, this is used with three port solenoid valves as monomer.This kind occasion also can be by installing manual buttons 51, and the solenoid valve that makes straight moving shape is with manual mode operation.

The present invention is defined in the foregoing description, still has all changes in the scope that does not break away from its purport.For example, though Fig. 1 carries the solenoid valve of many valves pattern of a plurality of solenoid valves at many valves pedestal 10, solenoid valve shown in Figure 1 11 is used with monomer.

Though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; any personnel that have the knack of this technology; without departing from the spirit and scope of the present invention; can do a little change and retouching, so protection scope of the present invention is as the criterion when looking the appending claims person of defining.

Claims

1. solenoid valve is characterized in that comprising:

One valve cylinder forms an accepting hole and is communicated in an air feed port one an output port and an exhaust port;

One main valve axle is located at this accepting hole in axle direction is round with moving freely, makes this output port be communicated in this ventilation port and this exhaust port with switching;

One solenoid is installed in this valve cylinder, is provided with the energising that utilizes a coil and can comes and goes and move in an axial movable core;

One pilot valve is installed in this valve cylinder with interlock in the mode of this movable core, makes an output channel that is communicated in an air pressure chamber of accommodating a piston, is communicated in an air feed path and an exhaust passageway of this air feed port with switching;

One manual button is installed in this valve cylinder to come and go the mode that moves freely, and by push action this pilot valve is moved in the position that this output channel is communicated with this air feed path; And

One break is installed in this valve cylinder in the mode that engages freely with this manual buttons, and it is mobile to limit pushing of this manual buttons.

2. solenoid valve as claimed in claim 1 is characterized in that, establishes this piston at the two end part of this main valve axle, has respectively two these pilot valves being moved of this solenoid part of utilization corresponding to accommodating two these air pressure chambers of this piston respectively.

3. solenoid valve as claimed in claim 2 is characterized in that, this main valve axle is the solenoid valve that is displaced into two positions or three positions.

4. solenoid valve is characterized in that comprising:

One valve cylinder is formed with;

One air feed path is formed with an open end at one first valve seat;

One exhaust passageway is formed with an open end this first valve seat being one second reverse valve seat; And

One output channel, the air guide that will be flowed out from this air feed path is in a carry-out part;

One solenoid part is installed in this valve cylinder, is provided with the energising that utilizes a coil and can comes and goes and move in an axial movable core;

One switch valve is located at this movable core, makes this first valve seat switch in addition;

One flap valve, subtend is disposed in this switch valve in this valve cylinder, utilizes this movable core to be driven and make in addition switch of this second valve seat by being communicated with latch;