CN105465389A - Valve device - Google Patents

Abstract

The invention aims to provide a valve device capable of preventing impact sound in work, solves a mounting method of a buffer part, and valve flow reducing problems after the buffer part is mounted, thus eliminating metal sounds caused by contact between the valve body and a plunger or valve core support; the valve device (200) comprises the following structures: plunger arranged to open and close a valve port of the valve seat (211d) and capable of moving with the valve core in a plunger pipe (221); valve body (211) at least comprising an inlet port (211a) connected with a first joint (201), an outlet port (211b) connected with a second joint (202), a valve chamber (211c) connected with the inlet port and outlet port and used for containing the valve core (212), the valve seat (211d) contacting with the valve core, and the buffer part (215); the buffer part is arranged between the valve body and the plunger (222), and arranged on a step portion of the valve body.

Description

Control valve unit

Technical field

The present invention relates at the control valve unit controlling to use in order to opening and closing stream in the system of fluid flowing.

Background technique

The control valve unit of opening and closing stream is used for various uses.One as this control valve unit is known to solenoid valve.Fig. 1 represents the main structure of the solenoid valve described in patent documentation 1 as an example of the solenoid valve of prior art.

In Fig. 1, solenoid valve 100 possesses valve body portion 110, be configured at the plunger unit 120 on the top in valve body portion 110 and be configured at the peripheral part of plunger unit 120 and attractor 123 and plunger 122 carried out to the electromagnetic coil assembly 130 of excitation.

Valve body portion 110 possesses: valve body 111, and it is connected with the first joint 101 and the second joint 102, has with can the mode of the movement valve chamber that holds spool 112 and plunger 122 and the valve seat that contacts with spool 112; And spherical spool 112, it is contained in valve chamber and is kept by the spool support 125 of the lower end being fixed on plunger 122, carries out opening and closing to valve seat.

Plunger unit 120 possesses: the plunger tube 121 as drum parts being fixed on the opening portion on the top of valve body 111; The plunger 122 as movable core that can slide up and down in plunger tube 121; Be fixed on the attractor 123 as secured core of the upper end portion of plunger tube 121; To be configured between plunger 122 and attractor 123 and with the helical spring 124 spool 112 being compressed to installation to the mode of the direction reinforcing of valve closing; Be fixed on the lower end of plunger 122 and keep the spool support 125 of spool 112 in inside; And to be configured between plunger 122 and spool 112 and to the valve spring 126 of spool 112 to the reinforcing of valve closing direction.

Electromagnetic coil assembly 130 possesses: the resinous bobbin 131 being installed on plunger tube 121 with same heart shaped; Be wound in bobbin 131 and plunger 122 and attractor 123 carried out to the coil 132 of excitation; The lead-in wire 133 be connected with coil 132; Cover the bobbin 131 after the coil 132 that reeled with resin, and the shell 134 of inner side will be contained in by the bobbin 131 after the covering of this resin and coil 132; And shell 134 is fixed on the bolt 135 of attractor 123.

Prior art document

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 2003-301962 publication

Patent documentation 2: Japanese Unexamined Patent Publication 2000-170945 publication

Patent documentation 3: Japanese Unexamined Patent Publication 63-89477 publication

Summary of the invention

Invent problem to be solved

Solenoid valve 100 in the past described in such patent documentation 1 possesses spool support 125, valve spring 126 and spool 112 in the lower end of plunger 122, and spool 112 is acted on to the structure of the corresponding type solenoid valve of high pressure of head pressure.Therefore, contacted with this two benches of spool support 125 by spool 112, reduce the impact of spool 112 and valve seat.Therefore, in solenoid valve 100, when plunger 122 moves to valve closing direction, the spool support 125 be made up of metallic material contacts with bottom the valve chamber of the valve body 111 be similarly made up of metallic material, and produce metallic sound thus, this metallic sound becomes problem.

Patent Document 2 discloses following solenoid valve, namely, damping spring is possessed, this damping spring is configured at around spool, one square end portion inserts the protuberance being located at plunger and also abuts with it, the opposing party end is inserted the annular recessed portion being located at solenoid valve main body and is also abutted with it, thus impulsive sound when can suppress work.But, in patent documentation 2, spool and valve seat sealed against one another by plane, the compression area of spool and valve seat becomes greatly, has existed for and has obtained more powerful attraction force and must strengthen coil or reduce the problem of compression area and so on.In addition, because damping spring is located at around spool, therefore also there are the following problems: worry that damping spring hinders stream or valve portion etc. of nipping.

In patent documentation 3, disclose following solenoid valve, the elastomeric nozzle buffer of conduct of the surrounding of the Elastic valve core of the elastic ring namely, possessing the end face of the secured core side being installed on plunger and the flange surface being installed on plunger, absorb the impact during plunger collides of high speed operation, and with working with low noise.But in patent documentation 3, elastomer is pasted on plunger, exists and hinder stream when valve opening, there is the problem of flow minimizing and so on.In addition, because elastomer is pasted on the plunger of high speed operation, therefore also deposit the problem that operationally elastomer may be peeled off.In addition, in patent documentation 3, also there are the following problems, and namely, owing to possessing nozzle buffer at the flange surface of plunger, stream becomes complicated, and fluid becomes turbulent flow.In addition, in order to ensure the flow by valve port, and need the displacement distance of plunger to set longer, therefore also there are the following problems, namely, needs to make plunger move the attraction force of longer distance.

The object of the present invention is to provide a kind of control valve unit, the problem of the installation method of the buffer unit in the past of impulsive sound when it solves suppression work, the problem of the flow minimizing etc. of the valve of the situation of buffer unit is installed, the contact because of valve body and plunger or spool support can have been relaxed and the metallic sound that produces.

For solving the scheme of problem

In order to solve above-mentioned problem, control valve unit of the present invention possesses: plunger, and it is in order to carry out opening and closing and can moving together with spool in plunger tube to the valve port being located at valve seat; And valve body, it at least has the ingress port connected with the first joint, the outlet port connected with the second joint, is communicated with and the valve chamber holding above-mentioned spool and the above-mentioned valve seat contacted with above-mentioned spool with above-mentioned ingress port and above-mentioned outlet port, the feature of above-mentioned control valve unit is, possesses buffer unit, this buffer unit is configured between above-mentioned valve body and above-mentioned plunger, and is configured in the stepped part being arranged at above-mentioned valve body.

In addition, can be also toroidal for above-mentioned buffer unit.

In addition, around the above-mentioned valve seat that also can be formed at the bottom surface of above-mentioned valve chamber for the stepped part being arranged at above-mentioned valve body, above-mentioned buffer unit is configured at above-mentioned stepped part.

In addition, also can for be fixed in order to the face of the opening portion side of the above-mentioned valve body from above-mentioned buffer unit, possess the surrounding of the above-mentioned spool of the inside being configured at above-mentioned valve chamber and be fixed on the cartridge of above-mentioned valve body.

In addition, also above-mentioned valve body can be fixed on for above-mentioned cartridge press-in.

In addition, also above-mentioned valve body can be fixedly welded on for above-mentioned cartridge.

In addition, also can possess for above-mentioned cartridge: band slit fixed component, it is formed with slit in a part for ring-type; And liner, it is located at the side, bottom surface of the above-mentioned valve chamber of above-mentioned band slit fixed component.

In addition, also can possess for above-mentioned cartridge: cartridge filter, it is configured at around the above-mentioned spool of the inside of above-mentioned valve chamber, and the face of the side, bottom surface of above-mentioned valve chamber contacts with above-mentioned buffer unit; And ring-type fixed component, it in order to fixing above-mentioned buffer unit and above-mentioned cartridge filter, and supports the face of the opening portion side of the above-mentioned valve body of above-mentioned cartridge filter and is fixed on above-mentioned valve body.

In addition, can there is no ladder difference for the bearing surface abutted with above-mentioned plunger and above-mentioned valve seat being configured at the above-mentioned buffer unit of above-mentioned stepped part yet and be in same plane.

In addition, also can be the stepped part that above-mentioned buffer unit has the peripheral part being located at the bearing surface abutted with above-mentioned plunger, the face of the side, bottom surface of the above-mentioned valve chamber of above-mentioned cartridge contacts with the stepped part of the peripheral part of the above-mentioned plunger bearing surface of above-mentioned buffer unit, carries out contraposition to above-mentioned cartridge.

In addition, also can possess for above-mentioned plunger: spool support, it is fixed on the side, bottom surface of above-mentioned valve chamber and keeps spherical spool in inside; And valve spring, it is interior and afterburning to valve closing direction to above-mentioned spool that it is configured at above-mentioned spool support.

In addition, can be also solenoid valve for above-mentioned control valve unit.

The effect of invention is as follows.

Control valve unit according to the present embodiment, by arranging buffer unit at surface of contact, can relax the contact because of valve body and plunger or spool support and the metallic sound produced.In addition, valve seat and spool can be metal, can maintain the durability, the workability that leak for valve.In addition, due to the top configuration cylinder filter from the buffer unit be located at bottom valve chamber, and be fixed with ring-type fixed component, therefore, it is possible to fix buffer unit by the method that manufacturing man-hours is few.In addition, buffer unit obstruction stream can also be eliminated simultaneously, buffer unit nips the problem points such as valve seat.

Accompanying drawing explanation

Fig. 1 is the sectional view of the solenoid valve of an example of the control valve unit representing prior art.

Fig. 2 is the sectional view of the solenoid valve of the first mode of execution of control valve unit of the present invention.

Fig. 3 is the sectional view near the valve body portion of the solenoid valve shown in Watch with magnifier diagram 2.

Fig. 4 is the ssembly drawing of the major component near the valve body portion of the solenoid valve of the second mode of execution of control valve unit of the present invention.

Fig. 5 be represent the solenoid valve shown in Fig. 4 valve body portion near the sectional view of major component.

Fig. 6 is the ssembly drawing of the major component near the valve body portion of the solenoid valve of the 3rd mode of execution of control valve unit of the present invention.

Fig. 7 (a) be represent the solenoid valve shown in Fig. 6 valve body portion near the sectional view of major component, be the sectional view of the major component near valve body portion, Fig. 7 (b) is the enlarged view near the stepped part of the buffer unit shown in the VIIB of Fig. 7 (a).

Fig. 8 (a) is the sectional view near the valve body portion of the solenoid valve amplifying the 4th mode of execution representing control valve unit of the present invention, be the enlarged view near valve body portion, Fig. 8 (b) is the enlarged view near the buffer unit shown in VIIIB of Fig. 8 (a).

Fig. 9 is the sectional view near the valve body portion of the solenoid valve amplifying the 5th mode of execution representing control valve unit of the present invention.

Figure 10 (a) is the figure being fixedly welded on the weld part of Fig. 9 of valve body amplifying ring-type fixed component further, represent that resistance welding is in the figure of the shape of the ring-type fixed component of taper stepped part partly, Figure 10 (b) represents that resistance welding is in the figure of the shape of the ring-type fixed component in land plateau portion partly, Figure 10 (c) represents that resistance welding is in the figure of the shape of the ring-type fixed component of the front end of inverted cone shape stepped part partly, Figure 10 (d) is the figure of the shape of the ring-type fixed component of the upper surface representing welding ring-type fixed component and valve body partly, Figure 10 (e) represents that the upper surface at ring-type fixed component and valve body arranges the figure of the shape of the ring-type fixed component that jut carries out welding partly.

Figure 11 (a) is the sectional view near the valve body portion of the solenoid valve amplifying the 6th mode of execution representing control valve unit of the present invention, Figure 11 (b) is the stereogram representing band slit fixed component, and Figure 11 (c) is the stereogram representing liner.

In figure: 200, 900, 1100-device (solenoid valve), the 201-the first joint, the 202-the second joint, 210, 810, 910, 1110-valve body portion, 211, 811, 911, 1011, 1011A, 1011B, 1011C, 1111-valve body, 211a, 811a, 911a, 1111a-ingress port, 211b, 811b, 911b, 1111b-outlet port, 211c, 811c, 911c, 1111c-valve chamber, 211d, 811d, 911d, 1111d-valve seat, 211e, 811e, 911e, 1011e, 1011Ae, 1011Be, 1011Ce-stepped part, 211f, 811f, 911f, 1111f-valve port, 211g, 811g, 911g, 1111g-flow path portion, 211h, 811h, 911h, 1111h-stepped part, 212-spool, 213-cylinder filter, 213a-upper surface, 213b-lower surface, 214, 414, 914, 1014, 1014A, 1014B, 1014C-ring-type fixed component, 214a, 414a, 914a, 1014a, 1014Aa, 1014Ba, 1014Ca-flange, 214b, 414b, 914b, 1014b, 1014Ab, 1014Bb, 1014Cb-stepped part, 214c, 414c-lower surface, 214d, 414d-press-in face, 215, 615, 815-buffer unit, 215a, 615a-through hole, 220-plunger unit, 221-plunger tube, 222-plunger, 222a-plunger compartment, 222b-longitudinal balancing orifice, 222c-horizontal balancing orifice, 222d-lower end hollow portion, 223-attractor, 224-helical spring, 225-spool support, 225a-through hole, 226-valve spring, 230-electromagnetic coil assembly, 231-bobbin, 232-coil, 233-lead-in wire, 234-shell, 235-bolt, 414e-through hole, 615b, 815b-stepped part, 914e, 1014e, 1014Ae, 1014Be, 1014Ce-depressed part, 916, 1016, 1016A, 716B, 716C-weld part, 1011Bi, 1011Ci-end face, 1011Cj-jut, 1014Cf-jut, 1114-band slit fixed component, 1115-liner.

Embodiment

Below, with reference to accompanying drawing, embodiments of the present invention are described.In addition, corresponding up and down with Fig. 1 to Figure 11 of the upper and lower concept in the following description, represents the relative position relationship of each parts, does not represent absolute relation.

First, the first mode of execution of the present invention is described.Fig. 2 is the sectional view of the solenoid valve 200 of the first mode of execution representing control valve unit of the present invention, and Fig. 3 is the sectional view near the valve body portion of the solenoid valve 200 shown in Watch with magnifier diagram 2.Solenoid valve 200 shown in Fig. 2, Fig. 3 is solenoid valves that the fluid of normal close type controls.

In Fig. 2, Fig. 3, the solenoid valve 200 of the first mode of execution of control valve unit of the present invention possesses: valve body portion 210; Be configured at the plunger unit 220 on the top in valve body portion 210; And be configured at the peripheral part of plunger unit 220 and attractor 223 described later and plunger 222 carried out to the electromagnetic coil assembly 230 of excitation.

Valve body portion 210 possesses: valve body 211, and it has the ingress port 211a connected with the first joint 201, the outlet port 211b connected with the second joint 202, be communicated with ingress port 211a and outlet port 211b and the mode of movement can hold the valve chamber 211c of spool 212 described later and plunger 222 and be positioned at the top of outlet port 211b and be arranged on the valve port 211f of the valve seat 211d contacted with spool 212; Spherical spool 212, it is contained in valve chamber 211c and is kept by the spool support 225 of the lower end being fixed on plunger 222 described later, carries out opening and closing to the valve port 211f being located at valve seat 211d; Cylinder filter 213, it prevents from entering from the foreign matter of outside; Ring-type fixed component 214, it is from top stationary cylinder filter 213; And buffer unit 215, it is configured at the stepped part 211h of the toroidal arranged around the valve seat 211d of the bottom surface of valve chamber 211c.

Plunger unit 220 possesses: the plunger tube 221 as drum parts being fixed on the opening portion on the top of valve body 211; The plunger 222 as movable core that can slide up and down in plunger tube 221; Be fixed on the attractor 223 as secured core of the upper end portion of plunger tube 221; Helical spring 224, it, in the inside of the plunger compartment 222a as roughly columned hole in center upper portion portion being arranged at plunger 222, is configured between plunger 222 and attractor 223, and to compress installation to spool 212 to the mode of the direction reinforcing of valve closing; Spool support 225, it is fixed on the lower end of plunger 222, and be substantially cylindrical shape, underpart extends to the inside, and keeps spool 212 in inside; And valve spring 226, its compression is installed on the inside of the lower end hollow portion 222d arranged in the bottom of plunger 222, and is configured between plunger 222 and spool 212, afterburning to valve closing direction to spool 212.

Longitudinal balancing orifice 222b and the balancing orifice 222c of transverse direction is formed in the inside of plunger 222.Thus, plunger compartment 222a is communicated with valve chamber 211c and realizes all pressing.In addition, near the stage casing of spool support 225, be formed with horizontal through hole 225a.Thus, the inside of spool support 225 is communicated with valve chamber 211c, before spool 212 is closed and is located at the valve port 211f of valve seat 211d, from the top elevated pressure fluid of spool 212, therefore spool 212 can utilize this pressure difference reliably to close to be located at the valve port 211f of valve seat 211d.

Electromagnetic coil assembly 230 possesses: the resinous bobbin 231 being installed on plunger tube 221 with same heart shaped; Be wound in bobbin 231 and plunger 222 and attractor 223 carried out to the coil 232 of excitation; The lead-in wire 233 be connected with coil 232; Cover the bobbin 231 after the coil 232 that reeled with resin, and the bobbin 231 covered with this resin and coil 232 are contained in the shell 234 of inner side; And shell 234 is fixed on the bolt 235 of attractor 223.

Then, the action of present embodiment is described.Solenoid valve 200 is the solenoid valve of normal close type, under usual state, utilize the active force depressing plunger 222 being downwards configured at the helical spring 224 of the plunger compartment 222a of plunger 222, utilize the active force being configured at the valve spring 226 of the lower end hollow portion 222d of plunger 222, the valve port 211f of bottom surface central authorities to the valve chamber 211c being configured at valve body 211 presses spool 212, thus becomes valve closing state.

Next, if be energized from lead-in wire 233 to coil 232, then attractor 223 and plunger 222 are excited.Thus, adsorption force is produced between attractor 223 and plunger 222, this adsorption force surpasses the active force of helical spring 224, thus plunger 222, be fixed on this plunger 222 spool support 225 and be moved upward by the spherical spool 212 that this spool support 225 keeps.

Be moved upward by spool 212, thus valve port 211f is opened wide, solenoid valve 200 becomes valve opening state.Thus, the fluid of inflow, is discharged to the second joint 202 from the first joint 201 by ingress port 211a, valve chamber 211c, valve seat 211d, outlet port 211b.

When making solenoid valve 200 become valve closing state from valve opening state, cutting off the energising from lead-in wire 233 to coil 232, making attractor 232 and plunger 222 demagnetization.Thus, adsorption force between attractor 223 and plunger 222 disappears, because of the active force of helical spring 224, plunger 222, be fixed on this plunger 222 spool support 225 and moved downwards by the spherical spool 212 that this spool support 225 keeps, close the valve port 211f being located at valve seat 211d, thus solenoid valve 200 becomes valve closing state.

In the present embodiment, possess the structure of spool support 225 and valve spring 226 as the lower end at plunger 222, this structure is the structure of the corresponding type solenoid valve of high pressure spool 212 being acted on to head pressure.Namely, when valve closing, first, spool 212 contacts with valve port 211f, and then, the bottom surface of spool support 225 contacts with the lower surface of valve chamber 211c, under the state of two side's contacts, keep valve closing state, impact when therefore spool 212 and valve port 211f contact is less, prevents distortion, when using valve even if long-time, also can stop the flowing of fluid, during valve closing, can taking a seat of stable valve be carried out, can prevent valve from leaking.In addition, when valve opening, can prevent the spool 212 in spool support 225 to beat the generation of the abnormal sound caused.By making such structure, the corresponding type solenoid valve of high pressure spool 212 being acted on to head pressure can be realized.But the present invention is not limited to this structure, also can apply in his structure.

Next, the cylinder filter 213 used in control valve unit of the present invention, ring-type fixed component 214 and buffer unit 215 are described.

Cylinder filter 213 is sintering bodies wire being woven into drum, itself is the porous body of high strength, keeps shape with self.As shown in Figure 3, cylinder filter 213, in the inner side of the inwall of the valve chamber 211c of valve body 211, is configured in the spool support 225 of maintenance spool 212 around.In addition, cylinder filter 213 makes drum at this, but and is defined in this, as long as barrel shape just can use.

Ring-type fixed component 214 is substantially cylindrical shapes, is provided with flange 214a on top.The stepped part 214b of the lower surface of this flange 214a contacts with the stepped part 211e of valve body 211, for the location of cylinder filter 213.

Buffer unit 215 is the metallic sound that produces of the collision of bottom surface in order to relax valve chamber 211c and spool support 225 and establishes and have the parts of the toroidal of circular through hole 215a in central authorities.As the material of buffer unit 215, the fluororesin such as PTFE, PAI resin, PEEK resin, vulcanite etc. suitably can be selected to be difficult to be out of shape because of impact and can not the material of fluid damages of controlled object to use.Buffer unit 215 is after being configured at the stepped part 211h arranged around the valve seat 211d of the bottom surface of valve chamber 211c, the mode contacted with buffer unit 215 with the lower surface 213b of cylinder filter 213 at an upper portion thereof configures cylinder filter 213, then, in the mode that the upper surface 213a of cylinder filter 213 contacts with the lower surface 214c of ring-type fixed component 214, valve body 211 is fixed in ring-type fixed component 214 press-in.In addition, when utilizing cylinder filter 213 or ring-type fixed component 214 to fix (pressing, abutting) buffer unit 215, even if the outer diameter tolerance strengthening buffer unit 215 also can allow.And have the following advantages: even if due to the impact when expansion of fluid or high temperature and the size of creep, buffer unit 215 becomes greatly on outer radial, also can include stepped part in.

Ring-type fixed component 214 is when being pressed into fixing, at the half point haply of ring-type fixed component 214 periphery, namely external diameter is pressed into face 214d by fixing with contacting by the top and than stepped part 211e part on the lower than flow path portion 211g in the sidewall of valve chamber 211c than being located at the part slightly larger than the internal diameter of flange 214a valve chamber 211c on the lower.

Cylinder filter 213 is configured to, in order to do not make from ingress port 211a flow into fluid contained by foreign matter be passed to the spool 212 and valve port 211f that are positioned at valve chamber 211c inside, and utilize ring-type fixed component 214 to support from upper surface 213a, be close to the buffer unit 215 of the stepped part 211h being located at valve chamber 211c to make lower surface 213b.The stepped part 214b of the flange 214a of ring-type fixed component 214, by contacting with the stepped part 211e on top of the valve chamber 211c being located at valve body 211, carries out the location of short transverse.

The fluid flowed into by ingress port 211a from the first joint 201 is by being located at the flow path portion 211g as negative area of the part of the periphery of the cylinder filter 213 of valve chamber 211c inside, be looped around cylinder filter 213 around, cylinder filter 213 entirety flowed into the valve chamber 211c having spool 212 and valve seat 211d as stream inner.Therefore, it is possible to the reduction pressure loss, and large discharge can be obtained.In addition, in the present embodiment, using flow path portion 211g as the negative area in valve chamber 211c, as long as such as, but flow path portion 211g is provided with space between valve body 211 and cylinder filter 213, if the shape of cylinder filter 213 is not cylinder, but as funnel shaped, be the shape that top is broad, bottom is narrow and small, then define the space of fluid flowing, therefore do not need to arrange negative area especially at valve chamber 211c.In addition, because cylinder filter 213 is arranged in the mode covering spool 212 and valve seat 211d, therefore absorb sound when valve is taken a seat, improve quietness.

Buffer unit 215 is provided with through hole 215a in central authorities, and the valve port 211f being located at valve seat 211d being positioned at the central part of the bottom surface of metal valve chamber 211c directly contacts with metal spool 212.Thereby, it is possible to maintain the durability, the workability that leak for valve.On the other hand, because the metal spool support 225 being located at the surrounding of spool 212 contacts with buffer unit 215, therefore, it is possible to the metallic sound that the collision of the bottom surface and spool support 225 of relaxing valve chamber 211c produces.There is not only volume but also tonequality for situation also ear-piercing user in metallic sound, by arranging buffer unit 215, tonequality also changes, and can improve volume and tonequality.

Buffer unit 215 is embedded in the stepped part 211h arranged in the bottom surface of valve chamber 211c, and mate with the degree of depth of counterbore, arbitrary thickness can both be applied.When thickening the thickness of buffer unit 215 at the counterbore deepening stepped part 211h, also buffer unit 215 can be pressed into valve body 211 and firmly fix.In addition, by buffer unit 215 being thickeied the amount being equivalent to counterbore, thus can expect to improve the effect relaxing the metallic sound produced with the collision of spool support 225 further.

In addition, the surface due to buffer unit 215 does not hinder the flowing of fluid, does not therefore desirably have ladder difference with the bottom surface of valve seat 211d and other valve chambers 211c and is in same plane.Thereby, it is possible to do not relax metallic sound with having a negative impact to service behaviour, flow.In addition, in the present embodiment, make buffer unit 215 and cylinder filter 213 be different parts, but also can make parts by one-body molded, thus reduce material cost, assembling man-hour.

In addition, the cylinder filter 213 of present embodiment and ring-type fixed component 214 are equivalent to cartridge.

As mentioned above, control valve unit according to the present embodiment, by arranging buffer unit at the surface of contact of valve body and spool support, thus metallic sound when can relax valve closing.In addition, valve seat and spool can be metal, thus can maintain the durability, the workability that leak for valve.In addition, due to the top configuration cylinder filter from the buffer unit be located at bottom valve chamber, and it is fixing to carry out press-in to ring-type fixed component, thus can fix buffer unit with the method that manufacturing man-hours is few.

Next the second mode of execution of the present invention is described.

Fig. 4 is the ssembly drawing of the major component near the valve body portion of the solenoid valve 400 of the second mode of execution of control valve unit of the present invention.Fig. 5 be represent the solenoid valve 400 shown in Fig. 4 valve body portion near the sectional view of major component.

The solenoid valve 400 of the second mode of execution of control valve unit of the present invention is eliminating cylinder filter 213, only fix buffer unit 215 this point by ring-type fixed component 414 different from the solenoid valve 200 of the first mode of execution of control valve unit of the present invention, other constituting component is identical.In addition, in Fig. 4, Fig. 5, for the constituting component identical with the constituting component in Fig. 2, Fig. 3, mark identical symbol to represent, and omit its repeat specification.

Ring-type fixed component 414 is substantially cylindrical shape, is provided with flange 414a on top.Stepped part 414b as the lower surface of this flange 414a contacts with the stepped part 211e of valve body 211, for location during fixing buffer unit 215.In addition, in the bottom of ring-type fixed component 414, be provided with the through hole 414e of toroidal everywhere, the fluid that the through hole 414e of this toroidal is used for for being flowed into from the first joint 201 by ingress port 211a passes through.In addition, arranging through hole 414e everywhere, but be not limited thereto at this, can be a place, also can be the many places beyond it.

Ring-type fixed component 414 is configured to, after being configured at buffer unit 215 the stepped part 211h arranged around the valve seat 211d of the bottom surface of valve chamber 211c, at an upper portion thereof in the mode contacted with the lower surface 414c of ring-type fixed component 414, valve body 211 is fixed in ring-type fixed component 414 press-in.When this press-in is fixed, namely the part that external diameter is slightly larger than the internal diameter of valve chamber 211c on top of the periphery being located at ring-type fixed component 414 is pressed into face 414d and fixes by contacting with the sidewall of valve chamber 211c.

In addition, the ring-type fixed component 414 of present embodiment is equivalent to cartridge.

As mentioned above, control valve unit according to the present embodiment, also can obtain the effect identical with the first mode of execution.Further, as the parts of fixing buffer unit, except cylinder filter, only ring-type fixed component is used, therefore, it is possible to reduce material cost and manufacturing man-hours.

Next, the 3rd mode of execution of the present invention is described.

Fig. 6 is the ssembly drawing of the major component near the valve body portion of the solenoid valve 600 of the 3rd mode of execution of control valve unit of the present invention.Fig. 7 be represent the solenoid valve 600 shown in Fig. 6 valve body portion near the sectional view of major component, Fig. 7 (a) is the sectional view of the major component near valve body portion, and Fig. 7 (b) is the enlarged view near the stepped part 615b of the buffer unit 615 shown in VIIB of Fig. 7 (a).

The solenoid valve 600 of the 3rd mode of execution of control valve unit of the present invention is except except the surperficial stepped part 615b looking for position be provided with for carrying out cylinder filter 213 of the peripheral part of buffer unit 615, and other constituting component is identical with the solenoid valve 200 of the first mode of execution of control valve unit of the present invention.In addition, in Fig. 6, Fig. 7, for the constituting component identical with the constituting component in Fig. 2, Fig. 3, mark identical symbol to represent, and omit its repeat specification.

Buffer unit 615 is the parts at central part with the toroidal of circular through hole 615a, and perimeter surface is provided with the stepped part 615b looking for position for carrying out cylinder filter 213 outside.By arranging this stepped part 615b, thus the lower surface 213b of cylinder filter 213 contacts with the stepped part 615b of buffer unit 615, and cylinder filter 213 is configured at correct position.In addition, in the present embodiment, make the structure at the upper surface of buffer unit 615 configuration cylinder filter 213, but also can as shown in the second mode of execution, remove cylinder filter 213, ring-type fixed component 414 is directly configured at the upper surface of buffer unit 615.

In addition, the cylinder filter 213 of present embodiment and ring-type fixed component 414 are equivalent to cartridge.

As mentioned above, control valve unit according to the present embodiment, also can obtain the effect identical with the first and second mode of execution.Further, stepped part is set by the peripheral part of the upper surface at buffer unit, thus cylinder filter or ring-type fixed component can be configured in tram at an upper portion thereof.

Next, the 4th mode of execution of the present invention is described.

Fig. 8 is the sectional view near the valve body portion of the solenoid valve 800 amplifying the 4th mode of execution representing control valve unit of the present invention, Fig. 8 (a) is the enlarged view near valve body portion, and Fig. 8 (b) is the enlarged view near the buffer unit 815 shown in VIIIB of Fig. 8 (a).

The solenoid valve 800 of the 4th mode of execution of control valve unit of the present invention is except replacing the buffer unit 215 being located at valve chamber 211c, and configuring beyond buffer unit 815 at the stepped part 811h of the part contacted with plunger 222 of the topmost part being located at valve body 811, other constituting component is identical with the solenoid valve 200 of the first mode of execution of control valve unit of the present invention.In addition, in Fig. 8, Fig. 9, for the constituting component identical with the constituting component in Fig. 2, Fig. 3, mark identical symbol to represent, and omit its repeat specification.

Buffer unit 815 to set to relax metallic sound that valve body 811 and the collision of plunger 222 produce and as ring-type, as material, can suitably select the fluororesin such as PTFE, PAI resin, PEEK resin, vulcanite etc. to be difficult to be out of shape because of impact, and the material that can not be controlled the fluid damages of object use.Buffer unit 815 is configured to, and is provided with stepped part 815b, is configured in stepped part 811h at its lower surface, and this stepped part 811h is arranged on the part contacted with plunger 222 of the topmost part of valve body 811.The stepped part 811h of valve body 811 is fixed in buffer unit 815 press-in.

As mentioned above, control valve unit according to the present embodiment, also can obtain the effect identical with the first to the 3rd mode of execution.In addition, the counterbore processing that the bottom surface without the need to carrying out valve chamber is difficult to realize just can possess buffer unit, the metallic sound that the collision that can relax valve body and plunger produces.

Next, the 5th mode of execution of the present invention is described.

Fig. 9 is the sectional view near the valve body portion of the solenoid valve 900 amplifying the 5th mode of execution representing control valve unit of the present invention.

The solenoid valve 900 of the 5th mode of execution of control valve unit of the present invention utilizes weld part 916 stationary ring fixed component 914 instead of press-in to be fixed on except the structure of valve body 911 except having, and other constituting component is identical with the solenoid valve 200 of the first mode of execution of control valve unit of the present invention.In fig .9, for the constituting component identical with the constituting component in Fig. 2, Fig. 3, mark identical symbol to represent, and omit repeat specification.

The stepped part 914b of all acclivitous tapers is toward the outside formed at the lower surface of the flange 914a of ring-type fixed component 914.The part on the inclined-plane of the stepped part 914b of this taper contacts with the bight of the stepped part 911e of valve body 911, and this point of contact is fixed as weld part 916 by resistance welding.Therefore, wishing the downside of the stepped part 914b at ring-type fixed component 914, being provided with the depressed part 914e for making the bight of the stepped part 911e of valve body 911 and the stepped part 914b of the taper of ring-type fixed component 914 reliably contact.In addition, the shape of ring-type fixed component 914 or welding method as shown below, are not limited to shape described herein, method.

Figure 10 represents other shapes ring-type fixed component being fixedly welded on valve body.

Figure 10 (a) amplifies and represents the shape identical with Fig. 9, in the lower surface formation of the flange 914a of ring-type fixed component 914 by the stepped part 914b of all acclivitous tapers toward the outside.The part on the inclined-plane of the stepped part 914b of this taper contacts with the bight of the stepped part 911e of valve body 911, and this point of contact is fixed by weld part 916.

In Figure 10 (b), be formed with the stepped part 1014b of plane at the lower surface of the flange 1014a of ring-type fixed component 1014.The stepped part 1014b of this plane contacts with a part of the stepped part 1011e of valve body 1011, and this point of contact is fixed by weld part 1016.

In Figure 10 (c), be formed with the stepped part 1014Ab of all downward-sloping tapers toward the outside at the lower surface of the flange 1014Aa of ring-type fixed component 1014A.The front end of the stepped part 1014Ab of this taper contacts with a part of the stepped part 1011Ae of valve body 1011A, and this point of contact is fixed by weld part 1016A.

In Figure 10 (d), be formed with the stepped part 1014Bb of plane at the lower surface of the flange 1014Ba of ring-type fixed component 1014B.The stepped part 1014Bb of this plane contacts with the stepped part 1011Be of valve body 1011B, but the weld part 1016B fixing by welding becomes the end face 1011Bi on the front end of the upper surface of flange 1014Ba and the top of valve body 1011B.Because weld part exposes, therefore under this form, the various welding such as TIG (TungstenInertGas) welding or laser bonding can be used.

In Figure 10 (e), at ring-type fixed component 1014C, be formed with the stepped part 1014Cb of plane at the lower surface of flange 1014Ca, be formed with jut 1014Cf in the front end of the upper surface of flange 1014Ca.Also be formed with jut 1011Cj in the front end of the end face 1011Ci of the upper surface of valve body 1011C, jut 1014Cf contacts with jut 1011Cj, and this point of contact is fixed by weld part 1016C.Because weld part exposes, therefore under this form, the various welding such as TIG welding or laser bonding can be used.

In addition, the cylinder filter 213 of present embodiment and ring-type fixed component 914,1014,1014A, 1014B, 1014C form cartridge.

As mentioned above, control valve unit according to the present embodiment, also can obtain the effect identical with the first mode of execution.In addition, be welded and fixed even if utilize, also can fix with above-mentioned press-in and ring-type fixed component is fixed on valve body identically.

Next, the 6th mode of execution of the present invention is described.

Figure 11 (a) is the sectional view near the valve body portion of the solenoid valve 1100 amplifying the 6th mode of execution representing control valve unit of the present invention, Figure 11 (b) is the stereogram representing band slit fixed component 1114, and Figure 11 (c) is the stereogram representing liner 1115.

The solenoid valve 1100 of the 6th mode of execution of control valve unit of the present invention is except having following formation, other constituting component is identical with the solenoid valve 200 of the first mode of execution of control valve unit of the present invention, solenoid valve 1100 comprises band slit fixed component 1114 and liner 1115 as ring-type fixed component, utilizes the elastic force of band slit fixed component 1114 to be fixed on valve body 1111.In fig. 11, for the constituting component identical with the constituting component in Fig. 2, Fig. 3, mark identical symbol to represent, and omit repeat specification.

Band slit fixed component 1114 has elasticity, is have the parts being formed with the C type shape of slit in a part for ring-type.After liner 1115 is inserted into valve body 1111, band slit fixed component 1114 inserts along the tapered portion 1111i of valve body 1111 towards the underside side of valve chamber 1111c.Now, diameter design obtains the width that slightly large band slit fixed component 1114 utilizes its elastic force to reduce slit 1114c and is received into valve chamber 1111c.The band slit fixed component 1114 being received into valve chamber 1111c utilizes the reaction force of its elastic force to be fixed on valve body 1111.

Liner 1115 is the parts of the toroidal arranged in order to the foreign matter in anti-fluid enters solenoid valve inside.Therefore, after cylinder filter 113 being inserted valve body 1111 and before being inserted by band slit fixed component 1114, liner 1115 is inserted.

In addition, the cylinder filter 213 of present embodiment, band slit fixed component 1114 and liner 1115 are equivalent to cartridge.

As mentioned above, control valve unit according to the present embodiment, also can obtain the effect identical with the first mode of execution.In addition, as ring-type fixed component, use band slit fixed component, utilize this elastic force also ring-type fixed component can be fixed on valve body.

In addition, as control valve unit of the present invention, the solenoid valve using the fluid of normal close type to control is illustrated, but is not limited thereto, and also can be applied to other control valve units that flow control valve etc. has same structure.Further, fluid is not particularly limited, and can both use, and can expect identical effect.

As discussed above, according to control valve unit of the present invention, the contact because of valve body and spool support can be relaxed by arranging buffer unit at surface of contact and the metallic sound produced.In addition, valve seat and spool can be metal, thus can maintain the durability, the workability that leak for valve.In addition, from the top configuration cylinder filter of the buffer unit be located at bottom valve chamber, and be fixed with ring-type fixed component, therefore, it is possible to fix buffer unit by the method that manufacturing man-hours is few.

Claims (12)

1. a control valve unit, possesses:

Plunger, it is in order to carry out opening and closing and can moving together with spool in plunger tube to the valve port being located at valve seat; And

Valve body, it at least has the ingress port connected with the first joint, the outlet port connected with the second joint, is communicated with and the valve chamber holding above-mentioned spool and the above-mentioned valve seat contacted with above-mentioned spool with above-mentioned ingress port and above-mentioned outlet port,

The feature of above-mentioned control valve unit is,

Possess buffer unit, this buffer unit is configured between above-mentioned valve body and above-mentioned plunger, and is configured in the stepped part being arranged at above-mentioned valve body.

2. control valve unit according to claim 1, is characterized in that,

Above-mentioned buffer unit is toroidal.

3. control valve unit according to claim 2, is characterized in that,

The stepped part being arranged at above-mentioned valve body is formed at around the above-mentioned valve seat of the bottom surface of above-mentioned valve chamber,

Above-mentioned buffer unit is configured at above-mentioned stepped part.

4. control valve unit according to claim 3, is characterized in that,

In order to the face of the opening portion side of the above-mentioned valve body from above-mentioned buffer unit is fixed, possess the surrounding of the above-mentioned spool of the inside being configured at above-mentioned valve chamber and be fixed on the cartridge of above-mentioned valve body.

5. control valve unit according to claim 4, is characterized in that,

Above-mentioned valve body is fixed in above-mentioned cartridge press-in.

6. control valve unit according to claim 4, is characterized in that,

Above-mentioned cartridge is fixedly welded on above-mentioned valve body.

7. control valve unit according to claim 4, is characterized in that,

Above-mentioned cartridge possesses:

Band slit fixed component, it is formed with slit in a part for ring-type; And

Liner, it is located at the side, bottom surface of the above-mentioned valve chamber of above-mentioned band slit fixed component.

8., according to the control valve unit described in any one of claim 4 ~ 7, it is characterized in that,

Above-mentioned cartridge possesses:

Cartridge filter, it is configured at around the above-mentioned spool of the inside of above-mentioned valve chamber, and the face of the side, bottom surface of the above-mentioned valve chamber of this cartridge filter contacts with above-mentioned buffer unit; And

Ring-type fixed component, it in order to fixing above-mentioned buffer unit and above-mentioned cartridge filter, and supports the face of the opening portion side of the above-mentioned valve body of above-mentioned cartridge filter and is fixed on above-mentioned valve body.

9., according to the control valve unit described in any one of claim 3 ~ 8, it is characterized in that,

The bearing surface abutted with above-mentioned plunger and the above-mentioned valve seat that are configured at the above-mentioned buffer unit of above-mentioned stepped part do not have ladder difference and are in same plane.

10., according to the control valve unit described in any one of claim 4 ~ 8, it is characterized in that,

Above-mentioned buffer unit has the stepped part of the peripheral part being located at the bearing surface abutted with above-mentioned plunger,

The face of the side, bottom surface of the above-mentioned valve chamber of above-mentioned cartridge contacts with the stepped part of the peripheral part of the above-mentioned plunger bearing surface of above-mentioned buffer unit, carries out contraposition to above-mentioned cartridge.

11., according to the control valve unit described in any one of claim 1 ~ 10, is characterized in that,

Above-mentioned plunger possesses:

Spool support, it is fixed on the side, bottom surface of above-mentioned valve chamber and keeps spherical spool in inside; And

Valve spring, it is interior and afterburning to valve closing direction to above-mentioned spool that it is configured at above-mentioned spool support.

12., according to the control valve unit described in any one of claim 1 ~ 11, is characterized in that,

Above-mentioned control valve unit is solenoid valve.