CN110319205A - Motor-driven valve - Google Patents
Motor-driven valve Download PDFInfo
- Publication number
- CN110319205A CN110319205A CN201910059372.4A CN201910059372A CN110319205A CN 110319205 A CN110319205 A CN 110319205A CN 201910059372 A CN201910059372 A CN 201910059372A CN 110319205 A CN110319205 A CN 110319205A
- Authority
- CN
- China
- Prior art keywords
- valve
- press
- valve shaft
- motor
- peripheral surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Lift Valve (AREA)
Abstract
Motor-driven valve is provided, valve shaft can be made accurately to move.Motor-driven valve (100) has pilot bushing (8), which has a substantially cylindrical shape, and inserts for valve shaft (6), can move the valve shaft (6) bearing in inner peripheral surface.The pilot bushing (8) has press-in portion (8b), which includes a part in the insert region of valve shaft (6), which is pressed into valve body (2).Moreover, at least part of the inner peripheral surface in the press-in portion (8b) is formed with stage portion (16), which forms by the way that the inner peripheral surface that will be pressed into portion (8b) is expanding.
Description
Technical field
The present invention relates to be assembled in the refrigeration cycle such as air conditioner, refrigeration machine and progress flow control for using etc. it is electronic
Valve.
Background technique
In motor-driven valve, first port is connected with second port via valve chamber, makes first end by the indoor spool of valve
The opening section product of mouth changes, to control flow.First port is provided with throttle orifice.On the other hand, spool is gradually
Undergauge and top attenuates.Therefore, the sectional area in the gap between spool and throttle orifice according to spool to the insertion of throttle orifice and
Change.
Spool is formed in the valve shaft that top reaches throttle orifice.By being axially moveable valve shaft, so that spool is to throttle orifice
Insertion it is variable.The circumferential surface of valve shaft is directed to bushing and circumferentially supports (referring for example to patent document 1).That is, pilot bushing
With cylindrical shape, by being inserted into valve shaft in cylinder, and limited using inner peripheral surface valve shaft variation in the radial direction,
The inclination of axis.Pilot bushing is fixed in the valve body with valve chamber, to be assembled in motor-driven valve.As consolidating for pilot bushing
Determine mode, there is known such as under type: forming the support holes with the periphery roughly the same diameter of pilot bushing in valve body in advance, so
The end of pilot bushing is pressed into support holes afterwards.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2018-025308 bulletin
Subject to be solved by the invention
Gap is provided in such a way that valve shaft can move between the inner peripheral surface and valve shaft of pilot bushing.In recent years, from
From the perspective of making the flow control high precision int carried out by motor-driven valve, which develops towards the direction to become smaller.On the other hand,
It when support holes, is deformed in a manner of to the bulging of axis center direction in pilot bushing when by pilot bushing indentation.Then,
The inner peripheral surface of pilot bushing is crimped on the valve shaft being inserted into pilot bushing, may interfere with the movement of valve shaft.
Summary of the invention
The present invention is proposed to solve problem of the prior art point as described above, and its purpose is to provide can
Make the motor-driven valve that valve shaft accurately moves.
Means for solving the problems
In order to achieve the above objectives, motor-driven valve of the invention controls flow, which includes valve body, the valve body
With valve chamber；Multiple ports, multiple port are connect with the valve body, and are connected to via the valve chamber；Throttle orifice, the section
Discharge orifice is set to one in the port；Valve shaft, the valve shaft are formed with spool in the end for reaching the throttle orifice, the valve shaft
It is supported to be axially moveable, be axially moveable by the valve shaft, send out the spool to the insertion of the throttle orifice
Changing；And pilot bushing, the pilot bushing have a substantially cylindrical shape, and insert for the valve shaft, in the pilot bushing
For inner peripheral surface by valve shaft bearing for that can move, the pilot bushing includes press-in portion, which includes inserting for the valve shaft
The a part in logical region, the press-in portion are pressed into the valve body；And stage portion, the stage portion are formed in the press-in portion
At least part of interior inner peripheral surface, and formed and the inner peripheral surface of the press-in portion is expanding.
It is also possible to the stage portion throughout the inner peripheral surface for one week being formed in the press-in portion.
It is also possible to the stage portion and forms the top for arriving the press-in portion always, the top of the press-in portion is described
Press-in portion is inserted into the innermost part of the valve body when being pressed into.
It is also possible to the motor-driven valve and includes cylinder part, which is overlapped with the valve body, internal closed；With
And balancing orifice, the balancing orifice press the valve chamber and the cylinder part, the balancing orifice is formed in the interior of the stage portion
Circumferential surface.
It is also possible to the motor-driven valve and includes cylinder part, which connect with the valve body；And stator, it should
The cylinder part is loaded on outside stator.
Invention effect
According to the present invention, pilot bushing is fixed on to the mode of valve body even by indentation, can also ensure that valve shaft
Good mobility.
Detailed description of the invention
Fig. 1 is the cross-sectional view for showing the structure of motor-driven valve of present embodiment.
Fig. 2 shows the stage portions for the pilot bushing for being set to present embodiment, are cuing open for height present in stage portion
View is from valve chamber side to the figure from cylinder part side.
Fig. 3 is to show the press-in portion of the pilot bushing of present embodiment to be pressed into the figure of the state of valve body.
Fig. 4 shows the second case of the stage portion of present embodiment, is to show the press-in portion of pilot bushing to be pressed into valve
The figure of the state of main body.
Fig. 5 shows the third example of the stage portion of present embodiment, is that the inner peripheral surface of the press-in portion of pilot bushing is unfolded
Figure.
Fig. 6 shows the 4th of the stage portion of present embodiment, is that the inner peripheral surface of the press-in portion of pilot bushing is unfolded
Figure.
Fig. 7 shows the 5th of the stage portion of present embodiment, is that the inner peripheral surface of the press-in portion of pilot bushing is unfolded
Figure.
Fig. 8 shows the 6th of the stage portion of present embodiment, is that the inner peripheral surface of the press-in portion of pilot bushing is unfolded
Figure.
Symbol description
1 cylinder part
2 valve bodies
2a valve chamber
2b support holes
2c through hole
The flange shape component of 2d
3 first ports
4 second ports
5 throttle orifices
6 valve shafts
6a stage portion
7 spools
8 pilot bushings
8a fixed thread
8b press-in portion
9 valve shaft retainers
9a is movable threaded
At the top of 9b
9c retainer
10 rotors
10a mounting hole
10b supporting mass
11 rotor pressing pieces
12 pushing tow nuts
13 restore spring
14 compression helical springs
15 lower part retainers
16 stage portions
17 balancing orifices
18 feed screw mechanisms
100 motor-driven valves
Specific embodiment
Hereinafter, being described in detail referring to embodiment of the attached drawing to motor-driven valve of the invention.Fig. 1 is to show this embodiment party
The cross-sectional view of the structure of the motor-driven valve 100 of formula.But the stator for being set to the stepper motor in outside of cylinder part 1 is omitted.
As shown in Figure 1, in motor-driven valve 100, the first port 3 and second port 4 in the path as fluids such as refrigerants
It is connect respectively with valve chamber 2a, first port 3 is connected to second port 4 via valve chamber 2a.First port 3 is provided with throttle orifice
5.In addition, being accommodated with spool 7 in valve chamber 2a.Spool 7 is towards throttle orifice 5 and top attenuates, and the waistline of the spool 7 is according to away from top
The height at end and it is different.The spool 7 is formed in the top for the valve shaft 6 that can be axially moveable.Valve shaft 6 is driving with stepper motor
Source is axially moveable in a manner of towards throttle orifice 5 or far from throttle orifice 5 by feed screw mechanism 18.Spool as a result,
7 is variable to the insertion of throttle orifice 5, to control the flow between first port 3 and second port 4 according to insertion.
Such motor-driven valve 100 is constituted and cylinder part 1 is overlapped and is connect with valve body 2.Cylinder part 1
It is the gas-tight container comprising including feed screw mechanism 18, storage valve shaft 6 mobile mechanism.The inner space of valve body 2 is
Valve chamber 2a is accommodated with spool 7.The cylinder part 1 is also referred to as shell, such as using the nonmagnetic metal plate such as stainless steel as former material
There is material an end face to be closed into hemispherical cup-like shape, equipped with stepping possessed by motor-driven valve 100 outside the cylinder part 1
The stator (not shown) of motor.Valve body 2 is also referred to as valve body, is the substantially cylinder with inner space, the one of valve body 2
End face is provided with opening.Cylinder part 1 and valve body 2 weight in a manner of the opening of cylinder part 1 and the register of valve body 2
It is folded.Typically, valve body 2 is provided with the flange shape component 2d to 1 side of cylinder part towards radial direction outer expandable, cylinder
Component 1 is connect with valve body 2 via flange shape component 2d.Flange shape component 2d can be with 2 one of valve body, that is, flange shape
Component 2d can by from valve body 2 it is extended in a manner of formed.
First port 3 be connected to the end face opposite with the opening towards cylinder part 1 of valve body 2 and with valve chamber 2a phase
Logical, which extends with the central axis of cylinder part 1.Second port 4 connect with the lateral circle surface of valve body 2 and
It is communicated with valve chamber 2a, the second port 4 and the extending direction of first port 3 extend vertically.Throttle orifice 5 is set to first port
3 open end.
Valve shaft 6 is configured with the central axis of cylinder part 1, has rod shape.The valve shaft 6 passes through cylinder part 1
The opening of opening and valve body 2, and it is prominent into valve chamber out of cylinder part 1, and the top of valve shaft 6 reaches the section of first port 3
Discharge orifice 5.Spool 7 is formed on the top for the valve shaft 6 for reaching throttle orifice 5.The valve shaft 6 is set to form the spool towards top undergauge
7。
Valve shaft 6 is configured in the bearing of pilot bushing 8 of cylinder part 1 other than two end regions as that can rotate and rise
Drop.Pilot bushing 8 axially supports the circumferential surface of valve shaft 6.It is formed in the periphery of pilot bushing 8 as externally threaded fixed spiral shell
Line 8a.On the other hand, pilot bushing 8 is screwed togather with valve shaft retainer 9 of the configuration in cylinder part 1.That is, valve shaft retainer 9 is
There is the cylinder of the top 9b of perforation in the end face for having bottom side of cylinder part 1, be formed with work in the inner circumferential of valve shaft retainer 9
For the movable threaded 9a of internal screw thread.Moreover, the fixed thread 8a of pilot bushing 8 and the movable threaded 9a of valve shaft retainer 9 are screwed togather.
The rotor 10 of stepper motor is coaxially disposed within the periphery of valve shaft retainer 9.Rotor 10 is such as Nd-Fe-B system
Terres rares plastic magnet is raw material, and has cylindrical shape, and being extended in the inner peripheral surface of rotor 10 has bearing valve shaft to keep
The supporting mass 10b of frame 9.There is the mounting hole 10a of valve shaft retainer 9 in supporting mass 10b opening, is embedded in by valve shaft retainer 9
In mounting hole 10a, so that rotor 10 and valve shaft retainer 9 are fixed.
In addition, it is prominent from pilot bushing 8 towards the rear end of the valve shaft 6 for having bottom of cylinder part 1, and then also protected from valve shaft
The opening for holding the top 9b of frame 9 is prominent.In the protrusion via turn of the washer-shaped of the radial direction extension along cylinder part 1
Sub- pressing piece 11 and be fixed with pushing tow nut 12 in a manner of being pressed into, weld etc..Moreover, valve shaft 6 from the midway of axis to rear end and one
Duan Chengwei thin footpath is provided with insertion between stage portion 6a and the top 9b of valve shaft retainer 9 to be formed with stage portion 6a
In the compression helical spring 14 of valve shaft 6.
Compression helical spring 14 exerts a force to valve shaft retainer 9 to 12 side of pushing tow nut.Therefore, by 14 He of compression helical spring
12 elastic force of pushing tow nut formula sandwich the top 9b of rotor pressing piece 11 and valve shaft retainer 9, the valve shaft for being fixed on rotor 10 is protected
Frame 9, rotor pressing piece 11, pushing tow nut 12 and valve shaft 6 is held to be integrally formed together with rotor 10.
Restore spring 13 in addition, being embedded in the periphery of pushing tow nut 12.There is bottom what valve shaft 6 was moved to cylinder part 1
In the case where portion side, that restores spring 13 and cylinder part 1 has bottom to contact and is compressed, and the recovery spring 13 is towards making and valve
The direction force of the fixed thread 8a engagement of the movable threaded 9a and pilot bushing 8 of the valve shaft retainer 9 of 6 one of axis.
In addition, being fixed with lower part retainer 15 below the part for being embedded with valve shaft retainer 9 in pilot bushing 8.
Lower part retainer 15 is for example by being screwed into fixed thread 8a for the internal screw thread for being set to the inside of the lower part retainer 15 to solid
Due to pilot bushing 8.Valve shaft retainer 9 portion integral be provided with retainer 9c.Retainer 9c is arrived in valve shaft retainer 9
Up to being abutted in the case where most down position with lower part retainer 15, the further rotation and decline of valve shaft retainer 9 are limited.
In such motor-driven valve 100, it is input into stepper motor from external pulse signal, rotor 10 rotates.Turn
The rotation amount of son 10 is proportional to umber of pulse.By the integraty formed by compression helical spring 14 and pushing tow nut 12, when turning
When son 10 rotates, valve shaft retainer 9 also carries out axis rotation around pilot bushing 8.
Here, as shown in Figure 1, pilot bushing 8 is configured at cylinder part 1, and a part is prominent from the inside of cylinder part 1
Out.The opening of valve body 2 is to lead to the hole with the level of valve chamber 2a, by the support holes 2b of major diameter and the through hole 2c structure of path
At the support holes 2b of the major diameter is fixed for pilot bushing 8, and the through hole 2c perforation of the path is set to the bottom of support holes 2b
Face is passed through for valve shaft 6.The part outstanding of slave cylinder part 1 in pilot bushing 8 is press-in portion 8b.Press-in portion 8b is pressed into
In support holes 2b, so that pilot bushing 8 is fixed on valve body 2.That is, press-in portion 8b and support holes 2b have tenon and mortise
Relationship.
Therefore, the position of pilot bushing 8 is fixed.Then, valve shaft retainer 9 and pilot bushing 8 pass through fixed thread 8a
With movable threaded 9a in relationship is screwed togather, therefore, 9 one side of valve shaft retainer carries out axis around pilot bushing 8 and rotates an edge
Axial movement.When valve shaft retainer 9 is axially moveable, pass through the one formed by compression helical spring 14 and pushing tow nut 12
Property, valve shaft 6, which is also directed at bushing 8 and carries, to be axially moveable.
When valve shaft 6 is mobile, pilot bushing 8 axially supports the circumferential surface of valve shaft 6, limits radial direction on one side as a result,
On variation, axis inclination, spool 7 is guided to throttle orifice 5 on one side.That is, pilot bushing 8 is coaxially configured with valve shaft 6, have
In the cylindrical shape of inner peripheral surface covering valve shaft 6.Gap is provided between the inner peripheral surface and valve shaft 6 of pilot bushing 8.Gap be as
The gap of lower degree: the variation of radial direction, the inclination of axis are accurately limited, and valve shaft 6 can be axially moveable.
As depicted in figs. 1 and 2, valve shaft 6 passes through press-in portion 8b and reaches valve chamber 2a.It is formed on the inner peripheral surface of press-in portion 8b
There is stage portion 16.Stage portion 16 is the region after the inner peripheral surface of press-in portion 8b is expanding, and throughout the whole of the inner peripheral surface of press-in portion 8b
Week is formed as an attachment with whole region.For example, the stage portion 16 is from the innermost press-in portion for being inserted into valve body 2
The top of 8b towards the side fixed thread 8a throughout press-in portion 8b indentation length formed.It is carried out on the top of press-in portion 8b
In the case where chamfering, stage portion 16 is at least longer than the chamfering.
Before being pressed into support holes 2b, the clearance C a between stage portion 16 and the outer peripheral surface of valve shaft 6 is set to than not having
Clearance C b between the inner peripheral surface of the pilot bushing 8 of stage portion 16 and the outer peripheral surface of valve shaft 6 is big.On the other hand, it will be pressed into portion
8b is pressed into the state of support holes 2b, as shown in figure 3, press-in portion 8b is deformed in such a way that inner peripheral surface bloats, press-in portion 8b's
Gap between inner peripheral surface and valve shaft 6 reduces.But the clearance C a between stage portion 16 and valve shaft 6 becomes larger.Therefore, even if
Press-in portion 8b deformation, also remains clearance C c between stage portion 16 and valve shaft 6, and the inner peripheral surface of press-in portion 8b is not pressed with valve shaft 6
It connects, valve shaft 6 will not be interfered to move along axial.
Therefore, because the presence of stage portion 16, valve shaft 6 is well in response to from external pulse signal and accurately
Mobile, spool 7 changes well to the insertion of throttle orifice 5.When the insertion for the spool 7 that top attenuates changes, by
The sectional area in the gap that the outer peripheral surface of spool 7 and the inner peripheral surface of throttle orifice 5 divide changes according to insertion.By upper, electricity
Dynamic valve 100 can accurately control the flow of first port 3 and second port 4.
In addition, as shown in Figure 1 and Figure 4, being processed in a manner of setting of perforating in pilot bushing 8 in the motor-driven valve 100
There is balancing orifice 17.Balancing orifice 17 is via the gap between the gap between pilot bushing 8 and valve shaft 6 and valve shaft 6 and through hole 2c
And connect valve chamber 2a and the inside of cylinder part 1, the inner space of valve chamber 2a and cylinder part 1 are remained and pressed.
Balancing orifice 17 is processed in stage portion 16 in a manner of setting of perforating.That is, being processed in a manner of setting of perforating
Balancing orifice 17 there may be the burr B as protrusion.If burr B reaches valve shaft 6, valve shaft 6 is hindered to move along axial.But
It is the stage portion 16 that balancing orifice 17 has been formed in level-one expanding.Therefore, burr B is difficult to reach valve shaft 6, reduces and interferes valve shaft 6
Along axial a possibility that movement.Moreover, because the presence of stage portion 16, even if press-in portion 8b is deformed, balancing orifice 17 will not
By the periphery face closure of valve shaft 6, pressed so that the inner space of valve chamber 2a and cylinder part 1 be remained well.Will be equal
In the case that pressure hole 17 is set to stage portion 16, as shown in figure 4, stage portion 16 is detached from the range of press-in portion 8b and stretches to fixed spiral shell
The side line 8a.
About stage portion 16, the formation range of stage portion 16 is the complete cycle and whole region of press-in portion 8b, but as long as at least
It is the range that the inner peripheral surface of press-in portion 8b is contacted with valve shaft 6.Typically, the inner peripheral surface of press-in portion 8b may connect with valve shaft 6
The range of touching be since pilot bushing 8 deform cardinal extremity to the top of the press-in portion 8b towards valve chamber 2a range.It is another
Aspect, also sometimes from the cardinal extremity of the deformation of pilot bushing 8, gap starts to reduce, but near the root of press-in portion 8b, still deposits
In sufficient gap.In this case, without making stage portion 16 reach the root of press-in portion 8b.That is, as shown in figure 5, stage portion
16 can be formed in the indentation length La than press-in portion 8b in the range of the contact basic point of the midway from press-in portion 8b is to top
In short range.Certainly, in order to ensure sufficient surplus capacity, stage portion 16 can also be formed as long with the indentation of press-in portion 8b
Spend the identical length of La.
In addition, in the entire scope that the inner peripheral surface that stage portion 16 is not limited to be formed in press-in portion 8b is contacted with valve shaft 6, it can also
To be formed in the range of a part that the inner peripheral surface of press-in portion 8b is contacted with valve shaft 6.It is because while press-in portion 8b and valve
In the range of axis 6 contacts, but their contact pressure still is able to be present in the sliding property for not interfering valve shaft 6.In this case,
It is not necessary that stage portion 16 is formed as the range until low contact pressure.For example, if although the root place in press-in portion 8b is opened
Begin contact, but the contact pressure in root place does not interfere the sliding property of valve shaft 6, then stage portion 16 can not also be formed as until
The root place of press-in portion 8b.It certainly, can also be in the model being likely to contact in order to reliably ensure the mobility of valve shaft 6
Enclose interior formation stage portion 16.
In addition, the diameter of the inner peripheral surface of the depth of stage portion 16, i.e. stage portion 16 is contemplated to be following degree: even if press-in portion
8b deforms, and there is also have gap between press-in portion 8b and valve shaft 6.Furthermore it is possible to allow the sliding property of valve shaft 6 in reality
The contact pressure being able to bear in use.That is, the depth of press-in portion 8b can be set for the purpose of non-contact, can also set
The upper limit of regulation contact pressure simultaneously makes contact pressure converge on the degree of the upper limit.Certainly, in order to reliably ensure the shifting of valve shaft 6
Dynamic property can also be formed stage portion 16 to non-contacting depth.
In addition, even if stage portion 16 is not set in the complete cycle and whole region of press-in portion 8b, also by contact area
Reduction and inhibit the deterioration of sliding property.Thus, for example, as shown in fig. 6, stage portion 16 can be with the interior phase of press-in portion 8b
It is narrower than width in a circumferential direction, and be discontinuously set side by side in the circumferential multiple.Be between adjacent stage portion 16 along
The rib 16a that the moving direction of valve shaft 6 extends.Rib 16a extends along the glide direction of valve shaft 6, therefore, even if connecing with valve shaft 6
Touching, also reduces the deterioration degree of the sliding property of valve shaft 6.It certainly, can also will in order to reliably ensure the mobility of valve shaft 6
Stage portion 16 is set to the complete cycle and whole region of press-in portion 8b.
In addition, as shown in fig. 7, the narrow stage portion 16 of the width can be and gradually become closer to the top of press-in portion 8b
It is wide.As close to the top of the higher press-in portion 8b of contact pressure, which makes the contact surface of valve shaft 6 Yu pilot bushing 8
Product reduces.It is also possible to link the big position of the width of stage portion 16 in the tip side of press-in portion 8b, on the top of press-in portion 8b
End keeps enlarged diameter region continuous within the scope of the complete cycle of inner peripheral surface.
In addition, stage portion 16 can be formed as reaching the top of press-in portion 8b, it can also be as shown in figure 8, to be accommodated in pressure
Enter the mode in the inner peripheral surface of portion 8b to excavate to form stage portion 16.Being accommodated in stage portion 16 in the inner peripheral surface of press-in portion 8b can be with
It is arranged with multirow column side by side in the axial direction and interior circumferential direction of pilot bushing 8.In such a case it is possible to make circumferentially arranged side by side
The quantity increase with the column close to the top of press-in portion 8b of the quantity of stage portion 16.The shape for the stage portion 16 excavated can be with
It is rectangle, can be circle, can be ellipse, can be polygon, can also be complicated shape.
As described above, the motor-driven valve 100 has pilot bushing 8, which is had a substantially cylindrical shape, for valve shaft 6
Insert can move the valve shaft 6 bearing in inner peripheral surface.It includes valve that the pilot bushing 8, which has press-in portion 8b, press-in portion 8b,
The a part in the insert region of axis 6, press-in portion 8b are pressed into valve body 2.Moreover, inner peripheral surface in press-in portion 8b
At least part be formed with will be pressed into portion 8b inner peripheral surface it is expanding made of stage portion 16.Even if as a result, will guiding by indentation
Bushing 8 is fixed on valve body 2, can also ensure that the good mobility of the valve shaft 6 across pilot bushing 8.
The stage portion 16 is throughout the inner peripheral surface for one week being formed in press-in portion 8b.In addition, stage portion 16 is formed always to pressure
Enter the top of portion 8b, the top of press-in portion 8b is the innermost part that press-in portion 8b is inserted into valve body 2 when being pressed into.
The position crimped thereby, it is possible to exclude the inner peripheral surface of pilot bushing 8 with valve shaft 6, valve shaft 6 can be more closely axially moveable.
In addition, balancing orifice 17 is made to be open in stage portion 16, which makes valve chamber 2a and cylinder part 1 become equal
Pressure.Even if balancing orifice 17 is in 8 inner opening of pilot bushing as a result, carries out processing caused burr in a manner of setting of perforating and arrive
A possibility that up to valve shaft 6, is relatively low, and valve shaft 6 can be made critically to be axially moveable.
(other embodiments)
Embodiments of the present invention are illustrated as described above, but can be in the range for the purport for not departing from invention
It is interior to carry out various omissions, displacement and change.Moreover, the embodiment and its deformation be contained in invention scope and spirit and
It is contained in the invention and its equivalent range recorded in claims.
Claims (5)
1. a kind of motor-driven valve, the motor-driven valve control flow comprising:
Valve body, the valve body have valve chamber；
Multiple ports, multiple port are connect with the valve body, and are connected to via the valve chamber；
Throttle orifice, the throttle orifice are set to one in the port；
Valve shaft, the valve shaft are formed with spool in the end for reaching the throttle orifice, which is supported to be axially moveable,
It is axially moveable by the valve shaft, the spool is made to change to the insertion of the throttle orifice；And
Pilot bushing, the pilot bushing have a substantially cylindrical shape, and insert for the valve shaft, incite somebody to action in the inner peripheral surface of the pilot bushing
Valve shaft bearing is that can move,
The pilot bushing includes
Press-in portion, the press-in portion include a part in the insert region of the valve shaft, which is pressed into the valve body；
And
Stage portion, the stage portion are formed at least part of the inner peripheral surface in the press-in portion, and by by the press-in portion
Inner peripheral surface it is expanding and formed.
2. motor-driven valve according to claim 1, which is characterized in that
The stage portion is throughout the inner peripheral surface for one week being formed in the press-in portion.
3. motor-driven valve according to claim 1 or 2, which is characterized in that
The stage portion forms always the top to the press-in portion, and the top of the press-in portion is that the press-in portion is being pressed into
When be inserted into the innermost part of the valve body.
4. motor-driven valve according to any one of claim 1 to 3, which is characterized in that the motor-driven valve includes
Cylinder part, the cylinder part are overlapped with the valve body, internal closed；And
Balancing orifice, the balancing orifice make to press in the valve chamber and the cylinder part,
The balancing orifice is formed in the inner peripheral surface of the stage portion.
5. motor-driven valve according to any one of claim 1 to 3, which is characterized in that the motor-driven valve includes
Cylinder part, the cylinder part are connect with the valve body；And
Stator, the stator are loaded on the cylinder part outside.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-062808 | 2018-03-28 | ||
| JP2018062808A JP6772210B2 (en) | 2018-03-28 | 2018-03-28 | Solenoid valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110319205A true CN110319205A (en) | 2019-10-11 |
| CN110319205B CN110319205B (en) | 2022-09-20 |
Family
ID=68112678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910059372.4A Active CN110319205B (en) | 2018-03-28 | 2019-01-22 | Electric valve |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6772210B2 (en) |
| CN (1) | CN110319205B (en) |
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| JP7326092B2 (en) * | 2019-09-25 | 2023-08-15 | 株式会社三共 | game machine |
| JP2021049117A (en) * | 2019-09-25 | 2021-04-01 | 株式会社三共 | Game machine |
| JP7409982B2 (en) * | 2020-07-02 | 2024-01-09 | 株式会社鷺宮製作所 | Electric valve and refrigeration cycle system |
| JP7453134B2 (en) | 2020-12-16 | 2024-03-19 | Ckd株式会社 | flow control valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1749607A (en) * | 2004-09-17 | 2006-03-22 | 株式会社不二工机 | Electric valve |
| CN1995786A (en) * | 2006-01-05 | 2007-07-11 | 株式会社不二工机 | Motor operated valve |
| CN101178129A (en) * | 2006-11-08 | 2008-05-14 | 株式会社不二工机 | Flow control valve |
| JP2009168050A (en) * | 2008-01-10 | 2009-07-30 | Fuji Koki Corp | Reversible flow rate control valve |
| CN105276199A (en) * | 2014-07-18 | 2016-01-27 | 株式会社鹭宫制作所 | Electric valve |
| CN105276200A (en) * | 2014-07-18 | 2016-01-27 | 株式会社鹭宫制作所 | Electric valve |
| CN106168292A (en) * | 2015-05-20 | 2016-11-30 | 株式会社不二工机 | Electrodynamic valve and assemble method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6523200B2 (en) * | 2016-03-31 | 2019-05-29 | 株式会社鷺宮製作所 | Motorized valve |
| JP6552457B2 (en) * | 2016-06-22 | 2019-07-31 | 株式会社鷺宮製作所 | Motorized valve |
-
2018
- 2018-03-28 JP JP2018062808A patent/JP6772210B2/en active Active
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1749607A (en) * | 2004-09-17 | 2006-03-22 | 株式会社不二工机 | Electric valve |
| CN1995786A (en) * | 2006-01-05 | 2007-07-11 | 株式会社不二工机 | Motor operated valve |
| CN101178129A (en) * | 2006-11-08 | 2008-05-14 | 株式会社不二工机 | Flow control valve |
| JP2008121711A (en) * | 2006-11-08 | 2008-05-29 | Fuji Koki Corp | Flow control valve |
| JP2009168050A (en) * | 2008-01-10 | 2009-07-30 | Fuji Koki Corp | Reversible flow rate control valve |
| CN105276199A (en) * | 2014-07-18 | 2016-01-27 | 株式会社鹭宫制作所 | Electric valve |
| CN105276200A (en) * | 2014-07-18 | 2016-01-27 | 株式会社鹭宫制作所 | Electric valve |
| JP2016023710A (en) * | 2014-07-18 | 2016-02-08 | 株式会社鷺宮製作所 | Motor-operated valve |
| CN106168292A (en) * | 2015-05-20 | 2016-11-30 | 株式会社不二工机 | Electrodynamic valve and assemble method thereof |
Also Published As
| Publication number | Publication date |
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| JP2019173877A (en) | 2019-10-10 |
| CN110319205B (en) | 2022-09-20 |
| JP6772210B2 (en) | 2020-10-21 |
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